version bump to 1.3 (#441)

* Config: add EnableSystemExtension option

* format

* i don't trust kvo

* review updates

.bazelrc

@@ -0,0 +1,2 @@
+build --apple_generate_dsym --define=apple.propagate_embedded_extra_outputs=yes
+build --host_force_python=PY2

.gitignore

@@ -1,6 +1,7 @@
 .DS_Store
-Build
-santa-*
+default.profraw
+*.provisionprofile
+bazel-*
 Pods
 Santa.xcodeproj/xcuserdata
 Santa.xcodeproj/project.xcworkspace

.travis.yml

@@ -1,12 +1,14 @@
 ---
+os: osx
+osx_image: xcode11
 language: objective-c
-cache: cocoapods
 sudo: false
-osx_image: xcode7
 
-before_install:
- - gem install cocoapods xcpretty
- - pod setup >/dev/null
+addons:
+  homebrew:
+    taps: bazelbuild/tap
+    packages: bazelbuild/tap/bazel
 
 script:
- - xcodebuild -workspace Santa.xcworkspace -scheme All -derivedDataPath build build test CODE_SIGN_IDENTITY='' | xcpretty -sc && exit ${PIPESTATUS[0]}
+ - bazel build :release --show_progress_rate_limit=30.0 -c opt --apple_generate_dsym --color=no --verbose_failures --sandbox_debug
+ - bazel test :unit_tests --show_progress_rate_limit=30.0 --test_output=errors --color=no --verbose_failures --sandbox_debug

BUILD

@@ -0,0 +1,167 @@
+load("@build_bazel_rules_apple//apple:versioning.bzl", "apple_bundle_version")
+load("//:helper.bzl", "run_command")
+load("//:version.bzl", "SANTA_VERSION")
+
+package(default_visibility = ["//visibility:public"])
+
+licenses(["notice"])
+
+exports_files(["LICENSE"])
+
+# The version label for mac_* rules.
+apple_bundle_version(
+    name = "version",
+    build_version = SANTA_VERSION,
+    short_version_string = SANTA_VERSION,
+)
+
+# Used to detect optimized builds
+config_setting(
+    name = "opt_build",
+    values = {"compilation_mode": "opt"},
+)
+
+################################################################################
+# Loading/Unloading/Reloading
+################################################################################
+run_command(
+    name = "unload",
+    cmd = """
+sudo launchctl unload /Library/LaunchDaemons/com.google.santad.plist 2>/dev/null
+sudo launchctl unload /Library/LaunchDaemons/com.google.santa.bundleservice.plist 2>/dev/null
+sudo kextunload -b com.google.santa-driver 2>/dev/null
+launchctl unload /Library/LaunchAgents/com.google.santa.plist 2>/dev/null
+""",
+)
+
+run_command(
+    name = "load",
+    cmd = """
+sudo launchctl load /Library/LaunchDaemons/com.google.santad.plist
+sudo launchctl load /Library/LaunchDaemons/com.google.santa.bundleservice.plist
+launchctl load /Library/LaunchAgents/com.google.santa.plist
+""",
+)
+
+run_command(
+    name = "reload",
+    srcs = [
+        "//Source/santa:Santa",
+        "//Source/santa_driver",
+    ],
+    cmd = """
+set -e
+
+rm -rf /tmp/bazel_santa_reload
+unzip -d /tmp/bazel_santa_reload \
+    $${BUILD_WORKSPACE_DIRECTORY}/bazel-bin/Source/santa_driver/santa_driver.zip >/dev/null
+unzip -d /tmp/bazel_santa_reload \
+    $${BUILD_WORKSPACE_DIRECTORY}/bazel-bin/Source/santa/Santa.zip >/dev/null
+echo "You may be asked for your password for sudo"
+sudo BINARIES=/tmp/bazel_santa_reload CONF=$${BUILD_WORKSPACE_DIRECTORY}/Conf \
+    $${BUILD_WORKSPACE_DIRECTORY}/Conf/install.sh
+rm -rf /tmp/bazel_santa_reload
+echo "Time to stop being naughty"
+""",
+)
+
+################################################################################
+# Release rules - used to create a release tarball
+################################################################################
+genrule(
+    name = "release",
+    srcs = [
+        "//Source/santa:Santa",
+        "//Source/santa_driver",
+        "Conf/install.sh",
+        "Conf/uninstall.sh",
+        "Conf/com.google.santa.bundleservice.plist",
+        "Conf/com.google.santad.plist",
+        "Conf/com.google.santa.plist",
+        "Conf/com.google.santa.asl.conf",
+        "Conf/com.google.santa.newsyslog.conf",
+        "Conf/Package/Makefile",
+        "Conf/Package/postinstall",
+        "Conf/Package/preinstall",
+    ],
+    outs = ["santa-" + SANTA_VERSION + ".tar.gz"],
+    cmd = select({
+        "//conditions:default": """
+        echo "ERROR: Trying to create a release tarball without optimization."
+        echo "Please add '-c opt' flag to bazel invocation"
+        """,
+        ":opt_build": """
+      # Extract santa_driver.zip and Santa.zip
+      for SRC in $(SRCS); do
+        if [ "$$(basename $${SRC})" == "santa_driver.zip" -o "$$(basename $${SRC})" == "Santa.zip" ]; then
+          mkdir -p $(@D)/binaries
+          unzip -q $${SRC} -d $(@D)/binaries >/dev/null
+        fi
+      done
+
+      # Copy config files
+      for SRC in $(SRCS); do
+        if [[ "$$(dirname $${SRC})" == *"Conf" ]]; then
+          mkdir -p $(@D)/conf
+          cp $${SRC} $(@D)/conf/
+        fi
+      done
+
+      # Gather together the dSYMs. Throw an error if no dSYMs were found
+      for SRC in $(SRCS); do
+        case $${SRC} in
+          *santa-driver.kext.dSYM*Info.plist)
+            mkdir -p $(@D)/dsym
+            cp -LR $$(dirname $$(dirname $${SRC})) $(@D)/dsym/santa-driver.kext.dSYM
+            ;;
+          *santad.dSYM*Info.plist)
+            mkdir -p $(@D)/dsym
+            cp -LR $$(dirname $$(dirname $${SRC})) $(@D)/dsym/santad.dSYM
+            ;;
+          *santactl.dSYM*Info.plist)
+            mkdir -p $(@D)/dsym
+            cp -LR $$(dirname $$(dirname $${SRC})) $(@D)/dsym/santactl.dSYM
+            ;;
+          *santabundleservice.dSYM*Info.plist)
+            mkdir -p $(@D)/dsym
+            cp -LR $$(dirname $$(dirname $${SRC})) $(@D)/dsym/santabundleservice.dSYM
+            ;;
+          *Santa.app.dSYM*Info.plist)
+            mkdir -p $(@D)/dsym
+            cp -LR $$(dirname $$(dirname $${SRC})) $(@D)/dsym/Santa.app.dSYM
+            ;;
+        esac
+      done
+
+      # Cause a build failure if the dSYMs are missing.
+      if [[ ! -d "$(@D)/dsym" ]]; then
+        echo "dsym dir missing: Did you forget to use --apple_generate_dsym?"
+        echo "This flag is required for the 'release' target."
+        exit 1
+      fi
+
+      # Update all the timestamps to now. Bazel avoids timestamps to allow
+      # builds to be hermetic and cacheable but for releases we want the
+      # timestamps to be more-or-less correct.
+      find $(@D)/{binaries,conf,dsym} -exec touch {} \\;
+
+      # Create final output tar
+      tar -C $(@D) -czpf $(@) binaries dsym conf
+    """,
+    }),
+    heuristic_label_expansion = 0,
+)
+
+test_suite(
+    name = "unit_tests",
+    tests = [
+        "//Source/common:SNTFileInfoTest",
+        "//Source/common:SNTPrefixTreeTest",
+        "//Source/santa_driver:SantaCacheTest",
+        "//Source/santactl:SNTCommandFileInfoTest",
+        "//Source/santactl:SNTCommandSyncTest",
+        "//Source/santad:SNTEventTableTest",
+        "//Source/santad:SNTExecutionControllerTest",
+        "//Source/santad:SNTRuleTableTest",
+    ],
+)

Conf/Package/Makefile

@@ -32,6 +32,7 @@ PACKAGE_VERSION:=$(shell curl -fs https://api.github.com/repos/google/santa/rele
 #         |    |-- com.google.santad.plist
 #         |    |-- com.google.santagui.plist
 #         |    +-- com.google.santa.asl.conf
+#         |    +-- com.google.santa.newsyslog.conf
 #         +--dsym
 #              |-- santa-driver.kext.dSYM
 #              |-- Santa.app.dSYM
@@ -44,6 +45,7 @@ PAYLOAD:=pack-Library-Extensions-santa-driver.kext \
 	pack-Library-LaunchDaemons-com.google.santad.plist \
 	pack-Library-LaunchAgents-com.google.santagui.plist \
 	pack-etc-asl-com.google.santa.asl.conf \
+	pack-etc-newsyslog.d-com.google.santa.newsyslog.conf \
 	pack-script-preinstall \
 	pack-script-postinstall
 
@@ -52,6 +54,7 @@ Santa.app: download
 com.google.santad.plist: download
 com.google.santagui.plist: download
 com.google.santa.asl.conf: download
+com.google.santa.newsyslog.conf: download
 
 download:
 	$(if $(PACKAGE_VERSION),, $(error GitHub API returned unexpected result. Wait a while and try again))
@@ -65,6 +68,12 @@ pack-etc-asl-com.google.santa.asl.conf: com.google.santa.asl.conf l_private_etc
 	@sudo chmod 755 ${WORK_D}/private/etc/asl
 	@sudo install -m 644 -o root -g wheel com.google.santa.asl.conf ${WORK_D}/private/etc/asl
 
+pack-etc-newsyslog.d-com.google.santa.newsyslog.conf: com.google.santa.newsyslog.conf l_private_etc
+	@sudo mkdir -p ${WORK_D}/private/etc/newsyslog.d
+	@sudo chown root:wheel ${WORK_D}/private/etc/newsyslog.d
+	@sudo chmod 755 ${WORK_D}/private/etc/newsyslog.d
+	@sudo install -m 644 -o root -g wheel com.google.santa.newsyslog.conf ${WORK_D}/private/etc/newsyslog.d
+
 pack-Library-Extensions-santa-driver.kext: santa-driver.kext l_Library
 	@sudo mkdir -p ${WORK_D}/Library/Extensions
 	@sudo ${DITTO} --noqtn santa-driver.kext ${WORK_D}/Library/Extensions/santa-driver.kext
@@ -79,6 +88,8 @@ myclean:
 	@rm -rf santa-driver.kext
 	@rm -f config.plist
 	@rm -f com.google.santa.asl.conf
+	@rm -f com.google.santa.newsyslog.conf
 	@rm -f com.google.santad.plist
 	@rm -f com.google.santagui.plist
 	@rm -f install.sh
+	@rm -f uninstall.sh

Conf/Package/postinstall

@@ -9,19 +9,28 @@
 # Restart syslogd to pick up ASL configuration change
 /usr/bin/killall -HUP syslogd
 
-/sbin/kextload /Library/Extensions/santa-driver.kext
-
-sleep 1
-
-/bin/launchctl load -w /Library/LaunchDaemons/com.google.santad.plist
-
-sleep 1
-
 # Create hopefully useful symlink for santactl
-/bin/ln -sf /Library/Extensions/santa-driver.kext/Contents/MacOS/santactl /usr/local/bin
+mkdir -p /usr/local/bin
+/bin/ln -sf /Applications/Santa.app/Contents/MacOS/santactl /usr/local/bin/santactl
+
+if [ $(uname -r | cut -d'.' -f1) -ge 19 ]; then
+  # Running on 10.15+
+  echo "Santa postinstall: running on 10.15+"
+  /bin/rm -rf /Library/Extensions/santa-driver.kext
+  /bin/rm -f /Library/LaunchDaemons/com.google.santad.plist
+else
+  # Running on <10.15
+  /bin/launchctl load -w /Library/LaunchDaemons/com.google.santad.plist
+fi
+
+# Load the bundle service
+/bin/launchctl load -w /Library/LaunchDaemons/com.google.santa.bundleservice.plist
 
 user=$(/usr/bin/stat -f '%u' /dev/console)
-[[ -z "$user" ]] && exit 0
-/bin/launchctl asuser ${user} /bin/launchctl load /Library/LaunchAgents/com.google.santagui.plist
+if [[ -z "$user" ]]; then
+  /Applications/Santa.app/Contents/MacOS/Santa --load-system-extension
+  exit 0
+fi
+/bin/launchctl asuser ${user} /bin/launchctl load /Library/LaunchAgents/com.google.santa.plist
 
 exit 0

Conf/Package/preinstall

@@ -6,21 +6,24 @@
 
 [[ $3 != "/" ]] && exit 0
 
-/bin/launchctl remove com.google.santad
+/bin/launchctl remove com.google.santad || true
+/bin/launchctl remove com.google.santa.bundleservice || true
 
-sleep 1
+/bin/sleep 1
 
-/sbin/kextunload -b com.google.santa-driver >/dev/null 2>&1
+/sbin/kextunload -b com.google.santa-driver >/dev/null 2>&1 || true
 
 # Remove cruft from old Santa versions
-/bin/rm /usr/libexec/santad
-/bin/rm /usr/sbin/santactl
+/bin/rm -f /usr/libexec/santad
+/bin/rm -f /usr/sbin/santactl
 /bin/launchctl remove com.google.santasync
-/bin/rm /Library/LaunchDaemons/com.google.santasync.plist
+/bin/rm -f /Library/LaunchDaemons/com.google.santasync.plist
+/bin/rm -rf /Applications/Santa.app
 
-sleep 1
+/bin/sleep 1
 
 user=$(/usr/bin/stat -f '%u' /dev/console)
 [[ -n "$user" ]] && /bin/launchctl asuser ${user} /bin/launchctl remove com.google.santagui
+[[ -n "$user" ]] && /bin/launchctl asuser ${user} /bin/launchctl remove com.google.santa
 
 exit 0

Conf/com.google.santa.asl.conf

@@ -1,6 +1,6 @@
 # Copy this file to /etc/asl to log all messages from santa-driver to the log file
-> /var/log/santa.log format="[$((Time)(ISO8601Z.3))] $Message" mode=0644 rotate=seq compress file_max=25M all_max=100M uid=0 gid=0
+> /var/db/santa/santa.log format="[$((Time)(ISO8601Z.3))] $Message" mode=0644 rotate=seq compress file_max=25M all_max=100M uid=0 gid=0
 ? [= Sender kernel] [S= Message santa-driver:] claim
-? [= Sender kernel] [S= Message santa-driver:] file /var/log/santa.log
+? [= Sender kernel] [S= Message santa-driver:] file /var/db/santa/santa.log
 ? [= Facility com.google.santa] claim
-? [= Facility com.google.santa] file /var/log/santa.log
+? [= Facility com.google.santa] file /var/db/santa/santa.log

Conf/com.google.santa.bundleservice.plist

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>Label</key>
+	<string>com.google.santa.bundleservice</string>
+	<key>ProgramArguments</key>
+	<array>
+		<string>/Applications/Santa.app/Contents/MacOS/santabundleservice</string>
+		<string>--syslog</string>
+	</array>
+	<key>MachServices</key>
+	<dict>
+		<key>com.google.santa.bundleservice</key>
+		<true/>
+	</dict>
+	<key>RunAtLoad</key>
+	<false/>
+	<key>KeepAlive</key>
+	<false/>
+	<key>ProcessType</key>
+	<string>Interactive</string>
+	<key>ThrottleInterval</key>
+	<integer>0</integer>
+</dict>
+</plist>

Conf/com.google.santa.newsyslog.conf

@@ -0,0 +1,2 @@
+# logfilename             [owner:group]       mode   count size(KiB) when   flags [/pid_file] # [sig_num]
+/var/db/santa/santa.log   root:wheel          644    10    25000     *      NZ

Conf/com.google.santa.plist

@@ -3,7 +3,7 @@
 <plist version="1.0">
 <dict>
 				<key>Label</key>
-				<string>com.google.santagui</string>
+				<string>com.google.santa</string>
 				<key>ProgramArguments</key>
 				<array>
 					<string>/Applications/Santa.app/Contents/MacOS/Santa</string>

Conf/com.google.santad.plist

@@ -1,26 +1,24 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
-				<key>Label</key>
-				<string>com.google.santad</string>
-				<key>ProgramArguments</key>
-				<array>
-					<string>/Library/Extensions/santa-driver.kext/Contents/MacOS/santad</string>
-					<string>--syslog</string>
-				</array>
-				<key>MachServices</key>
-				<dict>
-					<key>SantaXPCControl</key>
-					<true/>
-				</dict>
-				<key>RunAtLoad</key>
-				<true/>
-				<key>KeepAlive</key>
-				<true />
-				<key>ProcessType</key>
-				<string>Interactive</string>
-				<key>ThrottleInterval</key>
-				<integer>1</integer>
+	<key>Label</key>
+	<string>com.google.santad</string>
+	<key>ProgramArguments</key>
+	<array>
+		<string>/Applications/Santa.app/Contents/Library/SystemExtensions/com.google.santa.daemon.systemextension/Contents/MacOS/com.google.santa.daemon</string>
+		<string>--syslog</string>
+	</array>
+	<key>MachServices</key>
+	<dict>
+		<key>com.google.santa.daemon</key>
+		<true/>
+	</dict>
+	<key>RunAtLoad</key>
+	<true/>
+	<key>KeepAlive</key>
+	<true/>
+	<key>ProcessType</key>
+	<string>Interactive</string>
 </dict>
 </plist>

Conf/config.plist

@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<!-- Minimal Configuration -->
-	<key>ClientMode</key>
-	<integer>1</integer>
-
-	<!--  For documentation of other keys, see the following URL:
-  			https://github.com/google/santa/wiki/Configuration-Keys  -->
-</dict>
-</plist>

Conf/install.sh

@@ -5,54 +5,77 @@ if [[ $EUID -ne 0 ]]; then
   exit 1
 fi
 
-if [[ -d "binaries" ]]; then
-  SOURCE="."
-elif [[ -d "../binaries" ]]; then
-  SOURCE=".."
-else
-  echo "Can't find binaries, run install.sh from inside the conf directory" 1>&2
-  exit 1
+if [[ -z "${BINARIES}" || -z "${CONF}" ]]; then
+  if [[ -d "binaries" ]]; then
+    BINARIES="${PWD}/binaries"
+    CONF="${PWD}/conf"
+  elif [[ -d "../binaries" ]]; then
+    BINARIES="${PWD}/../binaries"
+    CONF="${PWD}/../conf"
+  else
+    echo "Can't find binaries, run install.sh from inside the conf directory" 1>&2
+    exit 1
+  fi
 fi
 
-# Determine if anyone is logged into the GUI
-GUI_USER=$(/usr/bin/stat -f '%u' /dev/console)
-
 # Unload santad and scheduled sync job.
 /bin/launchctl remove com.google.santad >/dev/null 2>&1
 
+# Unload bundle service
+/bin/launchctl remove com.google.santa.bundleservice >/dev/null 2>&1
+
 # Unload kext.
 /sbin/kextunload -b com.google.santa-driver >/dev/null 2>&1
 
+# Determine if anyone is logged into the GUI
+GUI_USER=$(/usr/bin/stat -f '%u' /dev/console)
+
 # Unload GUI agent if someone is logged in.
 [[ -n "$GUI_USER" ]] && \
-  /bin/launchctl asuser ${GUI_USER} /bin/launchctl remove /Library/LaunchAgents/com.google.santagui.plist
+  /bin/launchctl asuser ${GUI_USER} /bin/launchctl remove com.google.santagui
+[[ -n "$GUI_USER" ]] && \
+  /bin/launchctl asuser ${GUI_USER} /bin/launchctl remove com.google.santa
 
 # Cleanup cruft from old versions
 /bin/launchctl remove com.google.santasync >/dev/null 2>&1
 /bin/rm /Library/LaunchDaemons/com.google.santasync.plist >/dev/null 2>&1
 /bin/rm /usr/libexec/santad >/dev/null 2>&1
 /bin/rm /usr/sbin/santactl >/dev/null 2>&1
+/bin/rm -rf /Applications/Santa.app 2>&1
+/bin/rm -rf /Library/Extensions/santa-driver.kext 2>&1
 
 # Copy new files.
-/bin/cp -r ${SOURCE}/binaries/santa-driver.kext /Library/Extensions
-/bin/cp -r ${SOURCE}/binaries/Santa.app /Applications
-/bin/ln -s /Library/Extensions/santa-driver.kext/Contents/MacOS/santactl /usr/local/bin
+/bin/mkdir -p /var/db/santa
 
-/bin/cp ${SOURCE}/conf/com.google.santad.plist /Library/LaunchDaemons
-/bin/cp ${SOURCE}/conf/com.google.santagui.plist /Library/LaunchAgents
-/bin/cp ${SOURCE}/conf/com.google.santa.asl.conf /etc/asl/
+/bin/cp -r ${BINARIES}/Santa.app /Applications
+
+/bin/mkdir -p /usr/local/bin
+/bin/ln -s /Applications/Santa.app/Contents/MacOS/santactl /usr/local/bin 2>/dev/null
+
+/bin/cp ${CONF}/com.google.santa.plist /Library/LaunchAgents
+/bin/cp ${CONF}/com.google.santa.bundleservice.plist /Library/LaunchDaemons
+/bin/cp ${CONF}/com.google.santa.asl.conf /etc/asl/
+/bin/cp ${CONF}/com.google.santa.newsyslog.conf /etc/newsyslog.d/
 
 # Reload syslogd to pick up ASL configuration change.
 /usr/bin/killall -HUP syslogd
 
-# Load kext.
-/sbin/kextload /Library/Extensions/santa-driver.kext
+# Only copy the kext and load santad if running pre-10.15
+if [ $(uname -r | cut -d'.' -f1) -lt 19 ]; then
+  /bin/cp -r ${BINARIES}/santa-driver.kext /Library/Extensions
+  /bin/cp ${CONF}/com.google.santad.plist /Library/LaunchDaemons
+  /bin/launchctl load /Library/LaunchDaemons/com.google.santad.plist
+else
+  /Applications/Santa.app/Contents/MacOS/Santa --load-system-extension
+fi
 
-# Load santad and scheduled sync jobs.
-/bin/launchctl load /Library/LaunchDaemons/com.google.santad.plist
+# Load the bundle service
+/bin/launchctl load /Library/LaunchDaemons/com.google.santa.bundleservice.plist
 
 # Load GUI agent if someone is logged in.
-[[ -n "$GUI_USER" ]] && \
-  /bin/launchctl asuser ${GUI_USER} /bin/launchctl load /Library/LaunchAgents/com.google.santagui.plist
+if [[ -n "$GUI_USER" ]]; then
+  /bin/launchctl asuser ${GUI_USER} \
+  /bin/launchctl load -w /Library/LaunchAgents/com.google.santa.plist
+fi
 
 exit 0

Conf/uninstall.sh

@@ -0,0 +1,34 @@
+#!/bin/bash
+
+# Uninstalls Santa from the boot volume, clearing up everything but logs/configs.
+# Unloads the kernel extension, services, and deletes component files.
+# If a user is logged in, also unloads the GUI agent.
+
+[ "$EUID" != 0 ] && printf "%s\n" "This requires running as root/sudo." && exit 1
+
+# For macOS 10.15+ this will block up to 60 seconds
+/Applications/Santa.app/Contents/MacOS/Santa --unload-system-extension
+
+/bin/launchctl remove com.google.santad
+sleep 1
+/sbin/kextunload -b com.google.santa-driver >/dev/null 2>&1
+user=$(/usr/bin/stat -f '%u' /dev/console)
+[[ -n "$user" ]] && /bin/launchctl asuser ${user} /bin/launchctl remove com.google.santagui
+[[ -n "$user" ]] && /bin/launchctl asuser ${user} /bin/launchctl remove com.google.santa
+# and to clean out the log config, although it won't write after wiping the binary
+/usr/bin/killall -HUP syslogd
+# delete artifacts on-disk
+/bin/rm -rf /Applications/Santa.app
+/bin/rm -rf /Library/Extensions/santa-driver.kext
+/bin/rm -f /Library/LaunchAgents/com.google.santagui.plist
+/bin/rm -f /Library/LaunchAgents/com.google.santa.plist
+/bin/rm -f /Library/LaunchDaemons/com.google.santad.plist
+/bin/rm -f /Library/LaunchDaemons/com.google.santa.bundleservice.plist
+/bin/rm -f /private/etc/asl/com.google.santa.asl.conf
+/bin/rm -f /private/etc/newsyslog.d/com.google.santa.newsyslog.conf
+/bin/rm -f /usr/local/bin/santactl # just a symlink
+
+#uncomment to remove the config file and all databases, log files
+#/bin/rm -rf /var/db/santa
+#/bin/rm -f /var/log/santa*
+exit 0

Fuzzing/libFuzzer/.gitignore

@@ -0,0 +1,4 @@
+bin
+llvm-*.src
+llvm-*.src.tar.xz
+

Fuzzing/libFuzzer/build.sh

@@ -0,0 +1,109 @@
+#!/usr/bin/env bash
+
+LLVM_VERSION='5.0.1'
+LLVM_COMPILERRT_TARBALL_NAME="llvm-${LLVM_VERSION}.src.tar.xz"
+LLVM_COMPILERRT_SRC_FOLDER_NAME=`echo "${LLVM_COMPILERRT_TARBALL_NAME}" | cut -d '.' -f 1-4`
+LLVM_COMPILERRT_TARBALL_URL="http://releases.llvm.org/${LLVM_VERSION}/${LLVM_COMPILERRT_TARBALL_NAME}"
+
+LIBFUZZER_FOLDER="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+LOG_FILE=`mktemp`
+
+main() {
+  echo "libFuzzer build script"
+
+  echo " > Checking dependencies..."
+  checkDependencies || return 1
+
+  echo " > Entering libFuzzer folder..."
+  cd "${LIBFUZZER_FOLDER}" > /dev/null 2>&1
+  if [ $? -ne 0 ] ; then
+    echo "Failed to enter the libFuzzer folder: ${LIBFUZZER_FOLDER}"
+    return 1
+  fi
+
+  if [ ! -f "${LLVM_COMPILERRT_TARBALL_NAME}" ] ; then
+    echo " > Downloading the LLVM tarball..."
+    curl "${LLVM_COMPILERRT_TARBALL_URL}" -o "${LLVM_COMPILERRT_TARBALL_NAME}" > "${LOG_FILE}" 2>&1
+    if [ $? -ne 0 ] ; then
+      dumpLogFile "Failed to download the LLVM tarball"
+      return 1
+    fi
+  else
+    echo " > An existing LLVM tarball was found"
+  fi
+
+  if [ -d "${LLVM_COMPILERRT_SRC_FOLDER_NAME}" ] ; then
+    echo " > Deleting existing LLVM folder..."
+    rm -rf "${LLVM_COMPILERRT_SRC_FOLDER_NAME}" > "${LOG_FILE}" 2>&1
+    if [ $? -ne 0 ] ; then
+      dumpLogFile "Failed to delete the existing source folder"
+      return 1
+    fi
+  fi
+
+  echo " > Extracting the LLVM tarball..."
+  tar xf "${LLVM_COMPILERRT_TARBALL_NAME}" > "${LOG_FILE}" 2>&1
+  if [ $? -ne 0 ] ; then
+    rm "${LLVM_COMPILERRT_TARBALL_NAME}" "${LLVM_COMPILERRT_SRC_FOLDER_NAME}"
+    dumpLogFile "Failed to extract the LLVM tarball"
+    return 1
+  fi
+
+  if [ -d "bin" ] ; then
+    echo " > Deleting existing bin folder..."
+    rm -rf "bin" > "${LOG_FILE}" 2>&1
+    if [ $? -ne 0 ] ; then
+      dumpLogFile "Failed to delete the existing bin folder"
+      return 1
+    fi
+  fi
+
+  mkdir "bin" > "${LOG_FILE}" 2>&1
+  if [ $? -ne 0 ] ; then
+    dumpLogFile "Failed to create the bin folder"
+    return 1
+  fi
+
+  echo " > Building libFuzzer..."
+  ( cd "bin" && "../${LLVM_COMPILERRT_SRC_FOLDER_NAME}/lib/Fuzzer/build.sh" ) > "${LOG_FILE}" 2>&1
+  if [ $? -ne 0 ] ; then
+    dumpLogFile "Failed to build the library"
+    return 1
+  fi
+
+  printf "\nFinished building libFuzzer\n"
+  rm "${LOG_FILE}"
+
+  return 0
+}
+
+checkDependencies() {
+  executable_list=( "clang++" "curl" "tar" )
+
+  for executable in "${executable_list[@]}" ; do
+    which "${executable}" > /dev/null 2>&1
+    if [ $? -ne 0 ] ; then
+      echo "The following program was not found: ${executable}"
+      return 1
+    fi
+  done
+
+  return 0
+}
+
+dumpLogFile() {
+  if [ $# -eq 1 ] ; then
+    local message="$1"
+  else
+    local message="An error has occurred"
+  fi
+
+  printf "${message}\n"
+  printf "Log file follows\n===\n"
+  cat "${LOG_FILE}"
+  printf "\n===\n"
+  rm "${LOG_FILE}"
+}
+
+main $@
+exit $?

Fuzzing/santacache/.gitignore

@@ -0,0 +1,3 @@
+santacache.dSYM
+santacache
+

Fuzzing/santacache/src/main.cpp

@@ -0,0 +1,41 @@
+/// Copyright 2018 Google Inc. All rights reserved.
+///
+/// Licensed under the Apache License, Version 2.0 (the "License");
+/// you may not use this file except in compliance with the License.
+/// You may obtain a copy of the License at
+///
+///    http://www.apache.org/licenses/LICENSE-2.0
+///
+///    Unless required by applicable law or agreed to in writing, software
+///    distributed under the License is distributed on an "AS IS" BASIS,
+///    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+///    See the License for the specific language governing permissions and
+///    limitations under the License.
+
+#include <SantaCache.h>
+
+#include <iostream>
+#include <cstdint>
+
+extern "C" int LLVMFuzzerTestOneInput(const std::uint8_t *data, std::size_t size) {
+  static SantaCache<uint64_t, uint64_t> decision_cache(5000, 2);
+
+  std::uint64_t fields[2] = {};
+
+  if (size > 16) {
+    std::cout << "Invalid size! Start with -max_len=16\n";
+    return 1;
+  }
+
+  std::memcpy(fields, data, size);
+
+  decision_cache.set(fields[0], fields[1]);
+  auto returned_value = decision_cache.get(fields[0]);
+
+  if (returned_value != fields[1]) {
+    std::cout << fields[0] << ", " << fields[1] << " -> " << returned_value << "\n";
+    return 1;
+  }
+
+  return 0;
+}

Fuzzing/santactl/santactl_fuzzer_seed_corpus/example01

@@ -0,0 +1,16 @@
+{
+  "rules": [
+    {
+      "rule_type": "BINARY",
+      "policy": "BLACKLIST",
+      "sha256": "2dc104631939b4bdf5d6bccab76e166e37fe5e1605340cf68dab919df58b8eda",
+      "custom_msg": "blacklist firefox"
+    },
+    {
+      "rule_type": "CERTIFICATE",
+      "policy": "BLACKLIST",
+      "sha256": "e7726cf87cba9e25139465df5bd1557c8a8feed5c7dd338342d8da0959b63c8d",
+      "custom_msg": "blacklist dash app certificate"
+    }
+  ]
+}

Fuzzing/santactl/src/main.mm

@@ -0,0 +1,62 @@
+/// Copyright 2018 Google Inc. All rights reserved.
+///
+/// Licensed under the Apache License, Version 2.0 (the "License");
+/// you may not use this file except in compliance with the License.
+/// You may obtain a copy of the License at
+///
+///    http://www.apache.org/licenses/LICENSE-2.0
+///
+///    Unless required by applicable law or agreed to in writing, software
+///    distributed under the License is distributed on an "AS IS" BASIS,
+///    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+///    See the License for the specific language governing permissions and
+///    limitations under the License.
+
+#include <iostream>
+#include <cstdint>
+#include <vector>
+
+#include <SNTCommandSyncRuleDownload.h>
+#include <SNTCommandSyncState.h>
+#include <SNTCommandSyncConstants.h>
+#include <SNTRule.h>
+
+extern "C" int LLVMFuzzerTestOneInput(const std::uint8_t *data, std::size_t size) {
+  NSData *buffer = [NSData dataWithBytes:static_cast<const void *>(data) length:size];
+  if (!buffer) {
+    return 0;
+  }
+
+  NSError *error;
+  NSDictionary *response = [NSJSONSerialization JSONObjectWithData:buffer options:0 error:&error];
+  if (!response) {
+    return 0;
+  }
+
+  if (![response isKindOfClass:[NSDictionary class]]) {
+    return 0;
+  }
+
+  if (![response objectForKey:kRules]) {
+    return 0;
+  }
+
+  SNTCommandSyncState *state = [[SNTCommandSyncState alloc] init];
+  if (!state) {
+    return 0;
+  }
+
+  SNTCommandSyncRuleDownload *obj = [[SNTCommandSyncRuleDownload alloc] initWithState:state];
+  if (!obj) {
+    return 0;
+  }
+
+  for (NSDictionary *ruleDict in response[kRules]) {
+    SNTRule *rule = [obj ruleFromDictionary:ruleDict];
+    if (rule) {
+      std::cerr << "Rule: " << [[rule description] UTF8String] << "\n";
+    }
+  }
+ 
+  return 0;
+}

Fuzzing/santad/santad_databaseRemoveEventsWithIDs_fuzzer_seed_corpus/example01

@@ -0,0 +1 @@
+К'.p▒└G╗М┐║ЙSЮ╝и▌РУерЭxt1iАЫШ9ы*H╩4R"═©$-├Уww╙+Р╝╘[┼иу╧oС┬ОwRpЗя≤х°е

Fuzzing/santad/src/checkCacheForVnodeID.mm

@@ -0,0 +1,55 @@
+/// Copyright 2018 Google Inc. All rights reserved.
+///
+/// Licensed under the Apache License, Version 2.0 (the "License");
+/// you may not use this file except in compliance with the License.
+/// You may obtain a copy of the License at
+///
+///    http://www.apache.org/licenses/LICENSE-2.0
+///
+///    Unless required by applicable law or agreed to in writing, software
+///    distributed under the License is distributed on an "AS IS" BASIS,
+///    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+///    See the License for the specific language governing permissions and
+///    limitations under the License.
+
+#include <iostream>
+#include <cstdint>
+
+#import <MOLXPCConnection/MOLXPCConnection.h>
+
+#import "SNTCommandController.h"
+#import "SNTRule.h"
+#import "SNTXPCControlInterface.h"
+
+extern "C" int LLVMFuzzerTestOneInput(const std::uint8_t *data, std::size_t size) {
+  if (size > 16) {
+    std::cerr << "Invalid buffer size of " << size
+              <<  " (should be <= 16)" << std::endl;
+
+    return 1;
+  }
+
+  santa_vnode_id_t vnodeID = {};
+  std::memcpy(&vnodeID, data, size);
+  
+  MOLXPCConnection *daemonConn = [SNTXPCControlInterface configuredConnection];
+  daemonConn.invalidationHandler = ^{
+    printf("An error occurred communicating with the daemon, is it running?\n");
+    exit(1);
+  };
+
+  [daemonConn resume];
+
+  [[daemonConn remoteObjectProxy] checkCacheForVnodeID:vnodeID
+                                                  withReply:^(santa_action_t action) {
+    if (action == ACTION_RESPOND_ALLOW) {
+      std::cerr << "File exists in [whitelist] kernel cache" << std::endl;;
+    } else if (action == ACTION_RESPOND_DENY) {
+      std::cerr << "File exists in [blacklist] kernel cache" << std::endl;;
+    } else if (action == ACTION_UNSET) {
+      std::cerr << "File does not exist in cache" << std::endl;;
+    }
+  }];
+  
+  return 0;
+}

Fuzzing/santad/src/databaseRemoveEventsWithIDs.mm

@@ -0,0 +1,51 @@
+/// Copyright 2018 Google Inc. All rights reserved.
+///
+/// Licensed under the Apache License, Version 2.0 (the "License");
+/// you may not use this file except in compliance with the License.
+/// You may obtain a copy of the License at
+///
+///    http://www.apache.org/licenses/LICENSE-2.0
+///
+///    Unless required by applicable law or agreed to in writing, software
+///    distributed under the License is distributed on an "AS IS" BASIS,
+///    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+///    See the License for the specific language governing permissions and
+///    limitations under the License.
+
+#include <iostream>
+#include <cstdint>
+
+#import <MOLXPCConnection/MOLXPCConnection.h>
+
+#import "SNTCommandController.h"
+#import "SNTRule.h"
+#import "SNTXPCControlInterface.h"
+
+#pragma pack(push, 1)
+
+#pragma pack(pop)
+
+extern "C" int LLVMFuzzerTestOneInput(const std::uint8_t *data, std::size_t size) {
+  auto *eventId = reinterpret_cast<const std::uint64_t *>(data);
+  std::size_t eventIdCount = size / sizeof(std::uint64_t);
+  if (eventIdCount == 0) {
+    return 0;
+  }
+
+  MOLXPCConnection *daemonConn = [SNTXPCControlInterface configuredConnection];
+  daemonConn.invalidationHandler = ^{
+    printf("An error occurred communicating with the daemon, is it running?\n");
+    exit(1);
+  };
+
+  [daemonConn resume];
+
+  NSMutableSet *eventIds = [NSMutableSet setWithCapacity:eventIdCount];
+  for (std::size_t i = 0; i < eventIdCount; i++) {
+    auto id = [NSNumber numberWithInteger:eventId[i]];
+    [eventIds addObject:id];
+  }
+
+  [[daemonConn remoteObjectProxy] databaseRemoveEventsWithIDs:[eventIds allObjects]];
+  return 0;
+}

Fuzzing/santad/src/databaseRuleAddRules.mm

@@ -0,0 +1,73 @@
+/// Copyright 2018 Google Inc. All rights reserved.
+///
+/// Licensed under the Apache License, Version 2.0 (the "License");
+/// you may not use this file except in compliance with the License.
+/// You may obtain a copy of the License at
+///
+///    http://www.apache.org/licenses/LICENSE-2.0
+///
+///    Unless required by applicable law or agreed to in writing, software
+///    distributed under the License is distributed on an "AS IS" BASIS,
+///    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+///    See the License for the specific language governing permissions and
+///    limitations under the License.
+
+#include <iostream>
+#include <cstdint>
+
+#import <MOLXPCConnection/MOLXPCConnection.h>
+
+#import "SNTCommandController.h"
+#import "SNTRule.h"
+#import "SNTXPCControlInterface.h"
+
+#pragma pack(push, 1)
+
+struct InputData {
+  std::uint32_t cleanSlate;
+  std::uint32_t state;
+  std::uint32_t type;
+  char hash[33];
+};
+
+#pragma pack(pop)
+
+extern "C" int LLVMFuzzerTestOneInput(const std::uint8_t *data, std::size_t size) {
+  if (size > sizeof(InputData)) {
+    std::cerr << "Invalid buffer size of " << size
+              <<  " (should be <= " << sizeof(InputData)
+              << ")" << std::endl;
+
+    return 1;
+  }
+
+  InputData input_data = {};
+  std::memcpy(&input_data, data, size);
+
+  SNTRule *newRule = [[SNTRule alloc] init];
+  newRule.state = (SNTRuleState) input_data.state;
+  newRule.type = (SNTRuleType) input_data.type;
+  newRule.shasum = @(input_data.hash);
+  newRule.customMsg = @"";
+  
+  MOLXPCConnection *daemonConn = [SNTXPCControlInterface configuredConnection];
+  daemonConn.invalidationHandler = ^{
+    printf("An error occurred communicating with the daemon, is it running?\n");
+    exit(1);
+  };
+
+  [daemonConn resume];
+  [[daemonConn remoteObjectProxy] databaseRuleAddRules:@[newRule]
+                                                 cleanSlate:NO
+                                                      reply:^(NSError *error) {
+    if (!error) {
+      if (newRule.state == SNTRuleStateRemove) {
+        printf("Removed rule for SHA-256: %s.\n", [newRule.shasum UTF8String]);
+      } else {
+        printf("Added rule for SHA-256: %s.\n", [newRule.shasum UTF8String]);
+      }
+    }
+  }];
+  
+  return 0;
+}

Podfile

@@ -1,48 +1,22 @@
-platform :osx, "10.9"
 
-inhibit_all_warnings!
-
-target :Santa do
-  pod 'MOLCertificate'
-  pod 'MOLCodesignChecker'
+def common_pods
+   pod 'MOLXPCConnection'
+   pod 'MOLCodesignChecker'
+   pod 'FMDB'
+   pod 'MOLCertificate'
+   pod 'OCMock'
+   pod 'MOLAuthenticatingURLSession'
+   pod 'MOLFCMClient'
 end
 
-target :santad do
-  pod 'FMDB'
-  pod 'MOLCertificate'
-  pod 'MOLCodesignChecker'
-end
+project './Santa.xcodeproj'
 
-target :santactl do
-  pod 'FMDB'
-  pod 'MOLAuthenticatingURLSession'
-  pod 'MOLCertificate'
-  pod 'MOLCodesignChecker'
-end
-
-target :LogicTests do
-  pod 'FMDB'
-  pod 'MOLAuthenticatingURLSession'
-  pod 'MOLCertificate'
-  pod 'MOLCodesignChecker'
-  pod 'OCMock'
-end
-
-post_install do |installer|
-  installer.pods_project.targets.each do |target|
-    target.build_configurations.each do |config|
-      if config.name != 'Release' then
-        break
-      end
-
-      # This is necessary to get FMDB to not NSLog stuff.
-      config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] ||= ''
-      config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] <<= "NDEBUG=1"
-
-      # Enable more compiler optimizations.
-      config.build_settings['GCC_OPTIMIZATION_LEVEL'] = 'fast'
-      config.build_settings['LLVM_LTO'] = 'YES'
-    end
+project = Xcodeproj::Project.open "./Santa.xcodeproj"
+project.targets.each do |t|
+  if t.name == "santa-driver"
+      next
+  end
+  target t.name do
+      common_pods
   end
 end
-

Podfile.lock

@@ -1,28 +1,46 @@
 PODS:
-  - FMDB (2.6.2):
-    - FMDB/standard (= 2.6.2)
-  - FMDB/standard (2.6.2)
-  - MOLAuthenticatingURLSession (1.6):
-    - MOLCertificate (~> 1.3)
-  - MOLCertificate (1.5)
-  - MOLCodesignChecker (1.5):
-    - MOLCertificate (~> 1.3)
-  - OCMock (3.3)
+  - FMDB (2.7.5):
+    - FMDB/standard (= 2.7.5)
+  - FMDB/standard (2.7.5)
+  - MOLAuthenticatingURLSession (2.4):
+    - MOLCertificate (~> 1.8)
+  - MOLCertificate (1.9)
+  - MOLCodesignChecker (1.10):
+    - MOLCertificate (~> 1.8)
+  - MOLFCMClient (1.8):
+    - MOLAuthenticatingURLSession (~> 2.4)
+  - MOLXPCConnection (1.2):
+    - MOLCodesignChecker (~> 1.9)
+  - OCMock (3.5)
 
 DEPENDENCIES:
   - FMDB
   - MOLAuthenticatingURLSession
   - MOLCertificate
   - MOLCodesignChecker
+  - MOLFCMClient
+  - MOLXPCConnection
   - OCMock
 
+SPEC REPOS:
+  https://github.com/cocoapods/specs.git:
+    - FMDB
+    - MOLAuthenticatingURLSession
+    - MOLCertificate
+    - MOLCodesignChecker
+    - MOLFCMClient
+    - MOLXPCConnection
+    - OCMock
+
 SPEC CHECKSUMS:
-  FMDB: 854a0341b4726e53276f2a8996f06f1b80f9259a
-  MOLAuthenticatingURLSession: f956240458fb24b61e5607d735948dc9babfb4e3
-  MOLCertificate: c39cae866d24d36fbc78032affff83d401b5384a
-  MOLCodesignChecker: fc9c64147811d7b0d0739127003e0630dff9213a
-  OCMock: d68685bde31f69cb61d518dcb39269080c78b5ed
+  FMDB: 2ce00b547f966261cd18927a3ddb07cb6f3db82a
+  MOLAuthenticatingURLSession: c238aa1c9a7b1077eb39a6f40204bfe76a7d204e
+  MOLCertificate: e9e88a396c57032cab847f51a46e20c730cd752a
+  MOLCodesignChecker: b0d5db9d2f9bd94e0fd093891a5d40e5ad77cbc0
+  MOLFCMClient: 2bfbacd45cc11e1ca3c077e97b80401c4e4a54f1
+  MOLXPCConnection: c27af5cb1c43b18319698b0e568a8ddc2fc1e306
+  OCMock: 4ab4577fc941af31f4a0398f6e7e230cf21fc72a
 
-PODFILE CHECKSUM: bc456d69693ca262c781dbbde40529a9474b84b5
+PODFILE CHECKSUM: d03767a9915896232523962c98d9ff7294aec2b7
 
-COCOAPODS: 1.0.1
+COCOAPODS: 1.7.5

README.md

@@ -1,164 +1,183 @@
-Santa  [![Build Status](https://travis-ci.org/google/santa.png?branch=master)](https://travis-ci.org/google/santa)
-=====
+# Santa [![Build Status][build-status-img]][build-status-link] [![Documentation Status][doc-status-img]][doc-status-link]
+
+[build-status-img]: https://travis-ci.org/google/santa.png?branch=master
+[build-status-link]: https://travis-ci.org/google/santa
+[doc-status-img]: https://readthedocs.org/projects/santa/badge/?version=latest
+[doc-status-link]: https://santa.readthedocs.io/en/latest/?badge=latest
 
 <p align="center">
-<a href="#santa--">
-<img src="./Source/SantaGUI/Resources/Images.xcassets/AppIcon.appiconset/santa-hat-icon-128.png" alt="Santa Icon" />
-</a>
+    <img src="./Source/santa/Resources/Images.xcassets/AppIcon.appiconset/santa-hat-icon-128.png" alt="Santa Icon" />
 </p>
 
-Santa is a binary whitelisting/blacklisting system for macOS. It consists of
-a kernel extension that monitors for executions, a userland daemon that makes
-execution decisions based on the contents of a SQLite database, a GUI agent that
-notifies the user in case of a block decision and a command-line utility for
-managing the system and synchronizing the database with a server.
+Santa is a binary whitelisting/blacklisting system for macOS. It consists of a
+kernel extension (or a system extension on macOS 10.15+) that monitors for executions, a userland daemon that makes
+execution decisions based on the contents of a SQLite database, a GUI agent
+that notifies the user in case of a block decision and a command-line utility
+for managing the system and synchronizing the database with a server.
 
-Santa is not yet a 1.0. We're writing more tests, fixing bugs, working on TODOs
-and finishing up a security audit.
-
-Santa is named because it keeps track of binaries that are naughty and nice.
+It is named Santa because it keeps track of binaries that are naughty or nice.
 
 Santa is a project of Google's Macintosh Operations Team.
 
-Features
-========
+# Docs
 
-* Multiple modes: MONITOR and LOCKDOWN. In MONITOR mode all binaries except
-those marked as blacklisted will be allowed to run, whilst being logged and
-recorded in the database. In LOCKDOWN mode, only whitelisted binaries are
-allowed to run.
+The Santa docs are stored in the
+[Docs](https://github.com/google/santa/blob/master/docs) directory. A Read the
+Docs instance is available here: https://santa.readthedocs.io.
 
-* Codesign listing: Binaries can be whitelisted/blacklisted by their signing
-certificate, so you can trust/block all binaries by a given publisher. The
-binary will only be whitelisted by certificate if its signature validates
-correctly. However, a decision for a binary will override a decision for a
-certificate; i.e. you can whitelist a certificate while blacklisting a binary
-signed by that certificate or vice-versa.
+The docs include deployment options, details on how parts of Santa work and
+instructions for developing Santa itself.
 
-* In-kernel caching: whitelisted binaries are cached in the kernel so the
-processing required to make a request is only done if the binary
-isn't already cached.
+# Get Help
 
-* Userland components validate each other: each of the userland components (the
-daemon, the GUI agent and the command-line utility) communicate with each other
-using XPC and check that their signing certificates are identical before any
-communication is accepted.
+If you have questions or otherwise need help getting started,
+the [santa-dev](https://groups.google.com/forum/#!forum/santa-dev) group is a
+great place.
 
-* Event logging: all executions processed by the userland agent are logged and
-all unknown or denied binaries are also stored in the database for upload to a
-server.
+If you believe you have a bug, feel free to report [an
+issue](https://github.com/google/santa/isues) and we'll respond as soon as we
+can.
 
-* Kext uses only KPIs: the kernel extension only uses provided kernel
-programming interfaces to do its job. This means that the kext code should
-continue to work across OS versions.
 
-Intentions and Expectations
-===========================
+# Admin-Related Features
+
+* Multiple modes: In the default MONITOR mode, all binaries except those marked
+  as blacklisted will be allowed to run, whilst being logged and recorded in
+  the events database. In LOCKDOWN mode, only whitelisted binaries are allowed
+  to run.
+
+* Event logging: When the kext is loaded, all binary launches are logged.  When
+  in either mode, all unknown or denied binaries are stored in the database to
+  enable later aggregation.
+
+* Certificate-based rules, with override levels: Instead of relying on a
+  binary's hash (or 'fingerprint'), executables can be whitelisted/blacklisted
+  by their signing certificate. You can therefore trust/block all binaries by a
+  given publisher that were signed with that cert across version updates. A
+  binary can only be whitelisted by its certificate if its signature validates
+  correctly, but a rule for a binary's fingerprint will override a decision for
+  a certificate; i.e. you can whitelist a certificate while blacklisting a
+  binary signed with that certificate, or vice-versa.
+
+* Path-based rules (via NSRegularExpression/ICU): This allows a similar feature
+  to that found in Managed Client (the precursor to configuration profiles,
+  which used the same implementation mechanism), Application Launch
+  Restrictions via the mcxalr binary. This implementation carries the added
+  benefit of being configurable via regex, and not relying on LaunchServices.
+  As detailed in the wiki, when evaluating rules this holds the lowest
+  precedence.
+
+* Failsafe cert rules: You cannot put in a deny rule that would block the
+  certificate used to sign launchd, a.k.a. pid 1, and therefore all components
+  used in macOS. The binaries in every OS update (and in some cases entire new
+  versions) are therefore auto-whitelisted. This does not affect binaries from
+  Apple's App Store, which use various certs that change regularly for common
+  apps. Likewise, you cannot blacklist Santa itself, and Santa uses a distinct
+  separate cert than other Google apps.
+
+# Intentions and Expectations
+
 No single system or process will stop *all* attacks, or provide 100% security.
 Santa is written with the intention of helping protect users from themselves.
 People often download malware and trust it, giving the malware credentials, or
 allowing unknown software to exfiltrate more data about your system. As a
 centrally managed component, Santa can help stop the spread of malware among a
-larger fleet of machines. Additionally, Santa can aid in analyzing what is
-running in your fleet.
+large fleet of machines. Independently, Santa can aid in analyzing what is
+running on your computer.
 
-Santa is part of a defense-in-depth strategy, and you should continue to protect
-hosts in whatever other ways you see fit.
+Santa is part of a defense-in-depth strategy, and you should continue to
+protect hosts in whatever other ways you see fit.
 
-Get Help
-========
+# Security and Performance-Related Features
 
-If you have questions or need help getting started, the
-[santa-dev](https://groups.google.com/forum/#!forum/santa-dev) group is the
-best place to start.
+* In-kernel caching: whitelisted binaries are cached in the kernel so the
+  processing required to make a request is only done if the binary isn't
+  already cached.
 
-Known Issues
-============
-Santa is not yet a 1.0 and we have some known issues to be aware of:
+* Userland components validate each other: each of the userland components (the
+  daemon, the GUI agent and the command-line utility) communicate with each
+  other using XPC and check that their signing certificates are identical
+  before any communication is accepted.
+
+* Kext uses only KPIs: the kernel extension only uses provided kernel
+  programming interfaces to do its job. This means that the kext code should
+  continue to work across OS versions.
+
+# Known Issues
 
 * Santa only blocks execution (execve and variants), it doesn't protect against
-dynamic libraries loaded with dlopen, libraries on disk that have been replaced or
-libraries loaded using `DYLD_INSERT_LIBRARIES`. We are working on also protecting
-against these avenues of attack.
+  dynamic libraries loaded with dlopen, libraries on disk that have been
+  replaced, or libraries loaded using `DYLD_INSERT_LIBRARIES`. As of version
+  0.9.1 we *do* address [__PAGEZERO missing issues](b87482e) that were
+  exploited in some versions of macOS. We are working on also protecting
+  against similar avenues of attack.
 
 * Kext communication security: the kext will only accept a connection from a
-single client at a time and said client must be running as root. We haven't yet
-found a good way to ensure the kext only accepts connections from a valid client.
+  single client at a time and said client must be running as root. We haven't
+  yet found a good way to ensure the kext only accepts connections from a valid
+  client.
 
-* Database protection: the SQLite database is installed with permissions so that
-only the root user can read/write it. We're considering approaches to secure
-this further.
-
-* Sync client: the command-line client includes a command to synchronize with a
-management server, including the uploading of events that have occurred on the
-machine and to download new rules. We're still very heavily working on this
-server (which is AppEngine-based and will be open-sourced in the future), so the
-sync client code is unfinished. It does show the 'API' that we're expecting to
-use so if you'd like to write your own management server, feel free to look at
-how the client currently works (and suggest changes!)
+* Database protection: the SQLite database is installed with permissions so
+  that only the root user can read/write it. We're considering approaches to
+  secure this further.
 
 * Scripts: Santa is currently written to ignore any execution that isn't a
-binary. This is because after weighing the administration cost vs the benefit,
-we found it wasn't worthwhile. Additionally, a number of applications make use
-of temporary generated scripts, which we can't possibly whitelist and not doing
-so would cause problems. We're happy to revisit this (or at least make it an
-option) if it would be useful to others.
+  binary. This is because after weighing the administration cost vs the
+  benefit, we found it wasn't worthwhile. Additionally, a number of
+  applications make use of temporary generated scripts, which we can't possibly
+  whitelist and not doing so would cause problems. We're happy to revisit this
+  (or at least make it an option) if it would be useful to others.
 
-* Documentation: There currently isn't any.
+# Sync Servers
 
-* Tests: There aren't enough of them.
+* The `santactl` command-line client includes a flag to synchronize with a
+  management server, which uploads events that have occurred on the machine and
+  downloads new rules. There are several open-source servers you can sync with:
 
-Screenshots
-===========
+    * [Upvote](https://github.com/google/upvote) - An AppEngine-based server
+      that implements social voting to make managing a large fleet easier.
+    * [Moroz](https://github.com/groob/moroz) - A simple golang server that
+      serves hardcoded rules from simple configuration files.
+    * [Zentral](https://github.com/zentralopensource/zentral/wiki) - A
+      centralized service that pulls data from multiple sources and deploy
+      configurations to multiple services.
 
-A tool like Santa doesn't really lend itself to screenshots, so here's a video instead.
+* Alternatively, `santactl` can configure rules locally (without a sync
+  server).
 
-<p align="center">
-<img src="https://zippy.gfycat.com/MadFatalAmphiuma.gif" alt="Santa Block Video" />
-</p>
+# Screenshots
 
-Building
-========
-```sh
-git clone https://github.com/google/santa
-cd santa
+A tool like Santa doesn't really lend itself to screenshots, so here's a video
+instead.
 
-# Build a debug build. This will install any necessary CocoaPods, create the
-# workspace and build, outputting the full log only if an error occurred.
-# If CocoaPods is not installed, you'll be prompted to install it.
-#
-# For other build/install/run options, run rake without any arguments
-rake build:debug
-```
+<p align="center"> <img src="https://zippy.gfycat.com/MadFatalAmphiuma.gif"
+alt="Santa Block Video" /> </p>
 
-Note: the Xcode project is setup to use any installed "Mac Developer" certificate
-and for security-reasons parts of Santa will not operate properly if not signed.
-
-Kext Signing
-============
+# Kext Signing
 Kernel extensions on macOS 10.9 and later must be signed using an Apple-provided
 Developer ID certificate with a kernel extension flag. Without it, the only way
-to load an extension is to enable kext-dev-mode or disable SIP, depending on the
-OS version.
+to load an extension is to enable kext-dev-mode or disable SIP, depending on
+the OS version.
 
 There are two possible solutions for this, for distribution purposes:
 
-1) Use a [pre-built, pre-signed version](https://github.com/google/santa/releases)
-of the kext that we supply. Each time changes are made to the kext code we will
-update the pre-built version that you can make use of. This doesn't prevent you
-from making changes to the non-kext parts of Santa and distributing those.
-If you make changes to the kext and make a pull request, we can merge them in
-and distribute a new version of the pre-signed kext.
+1) Use a [pre-built, pre-signed
+version](https://github.com/google/santa/releases) of the kext that we supply.
+Each time changes are made to the kext code we will update the pre-built
+version that you can make use of. This doesn't prevent you from making changes
+to the non-kext parts of Santa and distributing those.  If you make changes to
+the kext and make a pull request, we can merge them in and distribute a new
+version of the pre-signed kext.
 
-2) Apply for your own [kext signing certificate](https://developer.apple.com/contact/kext/).
-Apple will only grant this for broad distribution within an organization, they
-won't issue them just for testing purposes.
+2) Apply for your own [kext signing
+certificate](https://developer.apple.com/contact/kext/).  Apple will only grant
+this for broad distribution within an organization, they won't issue them just
+for testing purposes.
 
-Contributing
-============
-Patches to this project are very much welcome. Please see the [CONTRIBUTING](https://github.com/google/santa/blob/master/CONTRIBUTING.md)
+# Contributing
+Patches to this project are very much welcome. Please see the
+[CONTRIBUTING](https://github.com/google/santa/blob/master/CONTRIBUTING.md)
 file.
 
-Disclaimer
-==========
+# Disclaimer
 This is **not** an official Google product.

Rakefile

@@ -1,212 +0,0 @@
-WORKSPACE           = 'Santa.xcworkspace'
-DEFAULT_SCHEME      = 'All'
-OUTPUT_PATH         = 'Build'
-BINARIES            = ['Santa.app', 'santa-driver.kext']
-DSYMS               = ['Santa.app.dSYM', 'santa-driver.kext.dSYM', 'santad.dSYM', 'santactl.dSYM']
-XCPRETTY_DEFAULTS   = '-sc'
-XCODEBUILD_DEFAULTS = "-workspace #{WORKSPACE} -derivedDataPath #{OUTPUT_PATH} -parallelizeTargets"
-$DISABLE_XCPRETTY   = false
-
-task :default do
-  system("rake -sT")
-end
-
-def xcodebuild(opts)
-  command = "xcodebuild #{XCODEBUILD_DEFAULTS} #{opts}"
-  if not $DISABLE_XCPRETTY
-    command << " | xcpretty #{XCPRETTY_DEFAULTS} && exit ${PIPESTATUS[0]}"
-  end
-
-  if system command
-    puts "\e[32mPass\e[0m"
-  else
-    raise "\e[31mFail\e[0m"
-  end
-end
-
-def xcodebuilddir
-  if not $xcode_build_dir
-    output = `xcodebuild #{XCODEBUILD_DEFAULTS} -scheme All -showBuildSettings`
-    if match = output.match(/BUILD_DIR = (.*)/)
-        $xcode_build_dir = match.captures.first
-        puts "Found Xcode build dir #{$xcode_build_dir}"
-    end
-  end
-  $xcode_build_dir
-end
-
-task :init do
-  unless File.exists?(WORKSPACE) and File.exists?('Pods')
-    puts "Pods missing, running 'pod install'"
-    system "pod install" or raise "CocoaPods is not installed. Install with 'sudo gem install cocoapods'"
-  end
-  unless system 'xcpretty -v >/dev/null 2>&1'
-    puts "xcpretty is not installed. Install with 'sudo gem install xcpretty'"
-    $DISABLE_XCPRETTY = true
-  end
-end
-
-task :remove_existing do
-  system 'sudo rm -rf /Library/Extensions/santa-driver.kext'
-  system 'sudo rm -rf /Applications/Santa.app'
-end
-
-desc "Clean"
-task :clean => :init do
-  puts "Cleaning"
-  FileUtils.rm_rf(OUTPUT_PATH)
-end
-
-# Build
-namespace :build do
-  desc "Build: Debug"
-  task :debug do
-    Rake::Task['build:build'].invoke("Debug")
-  end
-
-  desc "Build: Release"
-  task :release do
-    Rake::Task['build:build'].invoke("Release")
-  end
-
-  task :build, [:configuration] => :init do |t, args|
-    config = args[:configuration]
-    puts "Building with configuration: #{config}"
-    xcodebuild("-scheme All -configuration #{config} build")
-  end
-end
-
-
-# Install
-namespace :install do
-  desc "Install: Debug"
-  task :debug do
-    Rake::Task['install:install'].invoke("Debug")
-  end
-
-  desc "Install: Release"
-  task :release do
-    Rake::Task['install:install'].invoke("Release")
-  end
-
-  task :install, [:configuration] do |t, args|
-    config = args[:configuration]
-    system 'sudo cp conf/com.google.santad.plist /Library/LaunchDaemons'
-    system 'sudo cp conf/com.google.santagui.plist /Library/LaunchAgents'
-    system 'sudo cp conf/com.google.santa.asl.conf /etc/asl'
-    Rake::Task['build:build'].invoke(config)
-    puts "Installing with configuration: #{config}"
-    Rake::Task['remove_existing'].invoke()
-    system "sudo cp -r #{xcodebuilddir}/#{config}/santa-driver.kext /Library/Extensions"
-    system "sudo cp -r #{xcodebuilddir}/#{config}/Santa.app /Applications"
-  end
-end
-
-# Dist
-task :dist do
-  desc "Create distribution folder"
-
-  Rake::Task['clean'].invoke()
-  Rake::Task['build:build'].invoke("Release")
-
-  dist_path = "santa-#{`defaults read #{xcodebuilddir}/Release/santa-driver.kext/Contents/Info.plist CFBundleVersion`.strip}"
-
-  FileUtils.rm_rf(dist_path)
-
-  FileUtils.mkdir_p("#{dist_path}/binaries")
-  FileUtils.mkdir_p("#{dist_path}/conf")
-  FileUtils.mkdir_p("#{dist_path}/dsym")
-
-  BINARIES.each do |x|
-    FileUtils.cp_r("#{xcodebuilddir}/Release/#{x}", "#{dist_path}/binaries")
-  end
-
-  DSYMS.each do |x|
-    FileUtils.cp_r("#{xcodebuilddir}/Release/#{x}", "#{dist_path}/dsym")
-  end
-
-
-  Dir.glob("Conf/*") {|x| File.directory?(x) or FileUtils.cp(x, "#{dist_path}/conf")}
-
-  puts "Distribution folder #{dist_path} created"
-end
-
-# Tests
-namespace :tests do
-  desc "Tests: Logic"
-  task :logic => [:init] do
-    puts "Running logic tests"
-    xcodebuild("-scheme LogicTests test")
-  end
-
-  desc "Tests: Kernel"
-  task :kernel do
-    Rake::Task['unload'].invoke()
-    Rake::Task['install:debug'].invoke()
-    Rake::Task['load_kext'].invoke
-    FileUtils.mkdir_p("/tmp/santa_kerneltests_tmp")
-    begin
-      puts "\033[?25l\033[12h"  # hide cursor
-      puts "Running kernel tests"
-      system "cd /tmp/santa_kerneltests_tmp && sudo #{xcodebuilddir}/Debug/KernelTests"
-    rescue Exception
-    ensure
-      puts "\033[?25h\033[12l\n\n"  # unhide cursor
-      FileUtils.rm_rf("/tmp/santa_kerneltests_tmp")
-      Rake::Task['unload_kext'].execute
-    end
-  end
-end
-
-# Load/Unload
-task :unload_daemon do
-  puts "Unloading daemon"
-  system "sudo launchctl unload /Library/LaunchDaemons/com.google.santad.plist 2>/dev/null"
-end
-
-task :unload_kext do
-  puts "Unloading kernel extension"
-  system "sudo kextunload -b com.google.santa-driver 2>/dev/null"
-end
-
-task :unload_gui do
-  puts "Unloading GUI agent"
-  system "launchctl unload /Library/LaunchAgents/com.google.santagui.plist 2>/dev/null"
-end
-
-desc "Unload"
-task :unload => [:unload_daemon, :unload_kext, :unload_gui]
-
-task :load_daemon do
-  puts "Loading daemon"
-  system "sudo launchctl load /Library/LaunchDaemons/com.google.santad.plist"
-end
-
-task :load_kext do
-  puts "Loading kernel extension"
-  system "sudo kextload /Library/Extensions/santa-driver.kext"
-end
-
-task :load_gui do
-  puts "Loading GUI agent"
-  system "launchctl load /Library/LaunchAgents/com.google.santagui.plist 2>/dev/null"
-end
-
-desc "Load"
-task :load => [:load_kext, :load_daemon, :load_gui]
-
-namespace :reload do
-  desc "Reload: Debug"
-  task :debug do
-    Rake::Task['unload'].invoke()
-    Rake::Task['install:debug'].invoke()
-    Rake::Task['load'].invoke()
-  end
-
-  desc "Reload: Release"
-  task :release do
-    Rake::Task['unload'].invoke()
-    Rake::Task['install:release'].invoke()
-    Rake::Task['load'].invoke()
-  end
-end

Santa.xcodeproj/xcshareddata/xcschemes/All.xcscheme

@@ -1,83 +0,0 @@
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-<Scheme
-   LastUpgradeVersion = "0730"
-   version = "1.3">
-   <BuildAction
-      parallelizeBuildables = "YES"
-      buildImplicitDependencies = "YES">
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-         <BuildActionEntry
-            buildForTesting = "YES"
-            buildForRunning = "YES"
-            buildForProfiling = "YES"
-            buildForArchiving = "YES"
-            buildForAnalyzing = "YES">
-            <BuildableReference
-               BuildableIdentifier = "primary"
-               BlueprintIdentifier = "0D91BCDC174E8AE600131A7D"
-               BuildableName = "All"
-               BlueprintName = "All"
-               ReferencedContainer = "container:Santa.xcodeproj">
-            </BuildableReference>
-         </BuildActionEntry>
-      </BuildActionEntries>
-   </BuildAction>
-   <TestAction
-      buildConfiguration = "Debug"
-      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
-      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      shouldUseLaunchSchemeArgsEnv = "YES"
-      codeCoverageEnabled = "YES"
-      enableAddressSanitizer = "YES">
-      <Testables>
-         <TestableReference
-            skipped = "NO">
-            <BuildableReference
-               BuildableIdentifier = "primary"
-               BlueprintIdentifier = "0D260DAB18B68E12002A0B55"
-               BuildableName = "LogicTests.xctest"
-               BlueprintName = "LogicTests"
-               ReferencedContainer = "container:Santa.xcodeproj">
-            </BuildableReference>
-         </TestableReference>
-      </Testables>
-      <AdditionalOptions>
-      </AdditionalOptions>
-   </TestAction>
-   <LaunchAction
-      buildConfiguration = "Debug"
-      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
-      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      launchStyle = "0"
-      useCustomWorkingDirectory = "NO"
-      ignoresPersistentStateOnLaunch = "NO"
-      debugDocumentVersioning = "YES"
-      debugServiceExtension = "internal"
-      allowLocationSimulation = "YES">
-      <MacroExpansion>
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "0D91BCDC174E8AE600131A7D"
-            BuildableName = "All"
-            BlueprintName = "All"
-            ReferencedContainer = "container:Santa.xcodeproj">
-         </BuildableReference>
-      </MacroExpansion>
-      <AdditionalOptions>
-      </AdditionalOptions>
-   </LaunchAction>
-   <ProfileAction
-      buildConfiguration = "Release"
-      shouldUseLaunchSchemeArgsEnv = "YES"
-      savedToolIdentifier = ""
-      useCustomWorkingDirectory = "NO"
-      debugDocumentVersioning = "YES">
-   </ProfileAction>
-   <AnalyzeAction
-      buildConfiguration = "Debug">
-   </AnalyzeAction>
-   <ArchiveAction
-      buildConfiguration = "Release"
-      revealArchiveInOrganizer = "YES">
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Santa.xcodeproj/xcshareddata/xcschemes/KernelTests.xcscheme

@@ -1,91 +0,0 @@
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-<Scheme
-   LastUpgradeVersion = "0730"
-   version = "1.3">
-   <BuildAction
-      parallelizeBuildables = "YES"
-      buildImplicitDependencies = "YES">
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-            buildForRunning = "YES"
-            buildForProfiling = "YES"
-            buildForArchiving = "YES"
-            buildForAnalyzing = "YES">
-            <BuildableReference
-               BuildableIdentifier = "primary"
-               BlueprintIdentifier = "0D0016A1192BCD3C005E7FCD"
-               BuildableName = "KernelTests"
-               BlueprintName = "KernelTests"
-               ReferencedContainer = "container:Santa.xcodeproj">
-            </BuildableReference>
-         </BuildActionEntry>
-      </BuildActionEntries>
-   </BuildAction>
-   <TestAction
-      buildConfiguration = "Debug"
-      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
-      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
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-      </Testables>
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-         <BuildableReference
-            BuildableIdentifier = "primary"
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-      </MacroExpansion>
-      <AdditionalOptions>
-      </AdditionalOptions>
-   </TestAction>
-   <LaunchAction
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-      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
-      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
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-      shouldUseLaunchSchemeArgsEnv = "YES"
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-      useCustomWorkingDirectory = "NO"
-      debugDocumentVersioning = "YES">
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-         runnableDebuggingMode = "0">
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "0D0016A1192BCD3C005E7FCD"
-            BuildableName = "KernelTests"
-            BlueprintName = "KernelTests"
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-      buildConfiguration = "Debug">
-   </AnalyzeAction>
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-      buildConfiguration = "Release"
-      revealArchiveInOrganizer = "YES">
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Santa.xcodeproj/xcshareddata/xcschemes/LogicTests.xcscheme

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-      parallelizeBuildables = "YES"
-      buildImplicitDependencies = "YES">
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-            buildForRunning = "YES"
-            buildForProfiling = "NO"
-            buildForArchiving = "NO"
-            buildForAnalyzing = "YES">
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-            </BuildableReference>
-         </BuildActionEntry>
-      </BuildActionEntries>
-   </BuildAction>
-   <TestAction
-      buildConfiguration = "Debug"
-      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
-      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      shouldUseLaunchSchemeArgsEnv = "YES">
-      <Testables>
-         <TestableReference
-            skipped = "NO">
-            <BuildableReference
-               BuildableIdentifier = "primary"
-               BlueprintIdentifier = "0D260DAB18B68E12002A0B55"
-               BuildableName = "LogicTests.xctest"
-               BlueprintName = "LogicTests"
-               ReferencedContainer = "container:Santa.xcodeproj">
-            </BuildableReference>
-         </TestableReference>
-      </Testables>
-      <MacroExpansion>
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "0D260DAB18B68E12002A0B55"
-            BuildableName = "LogicTests.xctest"
-            BlueprintName = "LogicTests"
-            ReferencedContainer = "container:Santa.xcodeproj">
-         </BuildableReference>
-      </MacroExpansion>
-      <AdditionalOptions>
-      </AdditionalOptions>
-   </TestAction>
-   <LaunchAction
-      buildConfiguration = "Debug"
-      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
-      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      launchStyle = "0"
-      useCustomWorkingDirectory = "NO"
-      ignoresPersistentStateOnLaunch = "NO"
-      debugDocumentVersioning = "YES"
-      debugServiceExtension = "internal"
-      allowLocationSimulation = "YES">
-      <MacroExpansion>
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "0D260DAB18B68E12002A0B55"
-            BuildableName = "LogicTests.xctest"
-            BlueprintName = "LogicTests"
-            ReferencedContainer = "container:Santa.xcodeproj">
-         </BuildableReference>
-      </MacroExpansion>
-      <AdditionalOptions>
-      </AdditionalOptions>
-   </LaunchAction>
-   <ProfileAction
-      buildConfiguration = "Release"
-      shouldUseLaunchSchemeArgsEnv = "YES"
-      savedToolIdentifier = ""
-      useCustomWorkingDirectory = "NO"
-      debugDocumentVersioning = "YES">
-      <MacroExpansion>
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "0D260DAB18B68E12002A0B55"
-            BuildableName = "LogicTests.xctest"
-            BlueprintName = "LogicTests"
-            ReferencedContainer = "container:Santa.xcodeproj">
-         </BuildableReference>
-      </MacroExpansion>
-   </ProfileAction>
-   <AnalyzeAction
-      buildConfiguration = "Debug">
-   </AnalyzeAction>
-   <ArchiveAction
-      buildConfiguration = "Release"
-      revealArchiveInOrganizer = "YES">
-   </ArchiveAction>
-</Scheme>

Santa.xcodeproj/xcshareddata/xcschemes/Santa.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0730"
+   LastUpgradeVersion = "1100"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
@@ -14,7 +14,7 @@
             buildForAnalyzing = "YES">
             <BuildableReference
                BuildableIdentifier = "primary"
-               BlueprintIdentifier = "0D385DB5180DE4A900418BC6"
+               BlueprintIdentifier = "C779C2DD22F0E95000EE2541"
                BuildableName = "Santa.app"
                BlueprintName = "Santa"
                ReferencedContainer = "container:Santa.xcodeproj">
@@ -29,17 +29,6 @@
       shouldUseLaunchSchemeArgsEnv = "YES">
       <Testables>
       </Testables>
-      <MacroExpansion>
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "0D385DB5180DE4A900418BC6"
-            BuildableName = "Santa.app"
-            BlueprintName = "Santa"
-            ReferencedContainer = "container:Santa.xcodeproj">
-         </BuildableReference>
-      </MacroExpansion>
-      <AdditionalOptions>
-      </AdditionalOptions>
    </TestAction>
    <LaunchAction
       buildConfiguration = "Debug"
@@ -55,14 +44,12 @@
          runnableDebuggingMode = "0">
          <BuildableReference
             BuildableIdentifier = "primary"
-            BlueprintIdentifier = "0D385DB5180DE4A900418BC6"
+            BlueprintIdentifier = "C779C2DD22F0E95000EE2541"
             BuildableName = "Santa.app"
             BlueprintName = "Santa"
             ReferencedContainer = "container:Santa.xcodeproj">
          </BuildableReference>
       </BuildableProductRunnable>
-      <AdditionalOptions>
-      </AdditionalOptions>
    </LaunchAction>
    <ProfileAction
       buildConfiguration = "Release"
@@ -74,7 +61,7 @@
          runnableDebuggingMode = "0">
          <BuildableReference
             BuildableIdentifier = "primary"
-            BlueprintIdentifier = "0D385DB5180DE4A900418BC6"
+            BlueprintIdentifier = "C779C2DD22F0E95000EE2541"
             BuildableName = "Santa.app"
             BlueprintName = "Santa"
             ReferencedContainer = "container:Santa.xcodeproj">

Santa.xcodeproj/xcshareddata/xcschemes/santa-driver.xcscheme

@@ -1,71 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<Scheme
-   LastUpgradeVersion = "0730"
-   version = "1.3">
-   <BuildAction
-      parallelizeBuildables = "YES"
-      buildImplicitDependencies = "YES">
-      <BuildActionEntries>
-         <BuildActionEntry
-            buildForTesting = "YES"
-            buildForRunning = "YES"
-            buildForProfiling = "YES"
-            buildForArchiving = "YES"
-            buildForAnalyzing = "YES">
-            <BuildableReference
-               BuildableIdentifier = "primary"
-               BlueprintIdentifier = "0D91BCB3174E8A7E00131A7D"
-               BuildableName = "santa-driver.kext"
-               BlueprintName = "santa-driver"
-               ReferencedContainer = "container:Santa.xcodeproj">
-            </BuildableReference>
-         </BuildActionEntry>
-      </BuildActionEntries>
-   </BuildAction>
-   <TestAction
-      buildConfiguration = "Debug"
-      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
-      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      shouldUseLaunchSchemeArgsEnv = "YES">
-      <Testables>
-      </Testables>
-      <AdditionalOptions>
-      </AdditionalOptions>
-   </TestAction>
-   <LaunchAction
-      buildConfiguration = "Debug"
-      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
-      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      launchStyle = "0"
-      useCustomWorkingDirectory = "NO"
-      ignoresPersistentStateOnLaunch = "NO"
-      debugDocumentVersioning = "YES"
-      debugServiceExtension = "internal"
-      allowLocationSimulation = "YES">
-      <MacroExpansion>
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "0D91BCB3174E8A7E00131A7D"
-            BuildableName = "santa-driver.kext"
-            BlueprintName = "santa-driver"
-            ReferencedContainer = "container:Santa.xcodeproj">
-         </BuildableReference>
-      </MacroExpansion>
-      <AdditionalOptions>
-      </AdditionalOptions>
-   </LaunchAction>
-   <ProfileAction
-      buildConfiguration = "Release"
-      shouldUseLaunchSchemeArgsEnv = "YES"
-      savedToolIdentifier = ""
-      useCustomWorkingDirectory = "NO"
-      debugDocumentVersioning = "YES">
-   </ProfileAction>
-   <AnalyzeAction
-      buildConfiguration = "Debug">
-   </AnalyzeAction>
-   <ArchiveAction
-      buildConfiguration = "Release"
-      revealArchiveInOrganizer = "YES">
-   </ArchiveAction>
-</Scheme>

Santa.xcodeproj/xcshareddata/xcschemes/santactl.xcscheme

@@ -1,91 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<Scheme
-   LastUpgradeVersion = "0730"
-   version = "1.3">
-   <BuildAction
-      parallelizeBuildables = "YES"
-      buildImplicitDependencies = "YES">
-      <BuildActionEntries>
-         <BuildActionEntry
-            buildForTesting = "YES"
-            buildForRunning = "YES"
-            buildForProfiling = "YES"
-            buildForArchiving = "YES"
-            buildForAnalyzing = "YES">
-            <BuildableReference
-               BuildableIdentifier = "primary"
-               BlueprintIdentifier = "0D35BD9D18FD71CE00921A21"
-               BuildableName = "santactl"
-               BlueprintName = "santactl"
-               ReferencedContainer = "container:Santa.xcodeproj">
-            </BuildableReference>
-         </BuildActionEntry>
-      </BuildActionEntries>
-   </BuildAction>
-   <TestAction
-      buildConfiguration = "Debug"
-      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
-      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      shouldUseLaunchSchemeArgsEnv = "YES">
-      <Testables>
-      </Testables>
-      <MacroExpansion>
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "0D35BD9D18FD71CE00921A21"
-            BuildableName = "santactl"
-            BlueprintName = "santactl"
-            ReferencedContainer = "container:Santa.xcodeproj">
-         </BuildableReference>
-      </MacroExpansion>
-      <AdditionalOptions>
-      </AdditionalOptions>
-   </TestAction>
-   <LaunchAction
-      buildConfiguration = "Debug"
-      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
-      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      launchStyle = "0"
-      useCustomWorkingDirectory = "NO"
-      ignoresPersistentStateOnLaunch = "NO"
-      debugDocumentVersioning = "YES"
-      debugServiceExtension = "internal"
-      allowLocationSimulation = "YES">
-      <BuildableProductRunnable
-         runnableDebuggingMode = "0">
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "0D35BD9D18FD71CE00921A21"
-            BuildableName = "santactl"
-            BlueprintName = "santactl"
-            ReferencedContainer = "container:Santa.xcodeproj">
-         </BuildableReference>
-      </BuildableProductRunnable>
-      <AdditionalOptions>
-      </AdditionalOptions>
-   </LaunchAction>
-   <ProfileAction
-      buildConfiguration = "Release"
-      shouldUseLaunchSchemeArgsEnv = "YES"
-      savedToolIdentifier = ""
-      useCustomWorkingDirectory = "NO"
-      debugDocumentVersioning = "YES">
-      <BuildableProductRunnable
-         runnableDebuggingMode = "0">
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "0D35BD9D18FD71CE00921A21"
-            BuildableName = "santactl"
-            BlueprintName = "santactl"
-            ReferencedContainer = "container:Santa.xcodeproj">
-         </BuildableReference>
-      </BuildableProductRunnable>
-   </ProfileAction>
-   <AnalyzeAction
-      buildConfiguration = "Debug">
-   </AnalyzeAction>
-   <ArchiveAction
-      buildConfiguration = "Release"
-      revealArchiveInOrganizer = "YES">
-   </ArchiveAction>
-</Scheme>

Santa.xcodeproj/xcshareddata/xcschemes/santad.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0730"
+   LastUpgradeVersion = "1100"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
@@ -14,9 +14,9 @@
             buildForAnalyzing = "YES">
             <BuildableReference
                BuildableIdentifier = "primary"
-               BlueprintIdentifier = "0D9A7F3C1759330400035EB5"
-               BuildableName = "santad"
-               BlueprintName = "santad"
+               BlueprintIdentifier = "C779C4E522F0F51400EE2541"
+               BuildableName = "com.google.santa.daemon"
+               BlueprintName = "com.google.santa.daemon"
                ReferencedContainer = "container:Santa.xcodeproj">
             </BuildableReference>
          </BuildActionEntry>
@@ -29,17 +29,6 @@
       shouldUseLaunchSchemeArgsEnv = "YES">
       <Testables>
       </Testables>
-      <MacroExpansion>
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "0D9A7F3C1759330400035EB5"
-            BuildableName = "santad"
-            BlueprintName = "santad"
-            ReferencedContainer = "container:Santa.xcodeproj">
-         </BuildableReference>
-      </MacroExpansion>
-      <AdditionalOptions>
-      </AdditionalOptions>
    </TestAction>
    <LaunchAction
       buildConfiguration = "Debug"
@@ -56,14 +45,12 @@
          runnableDebuggingMode = "0">
          <BuildableReference
             BuildableIdentifier = "primary"
-            BlueprintIdentifier = "0D9A7F3C1759330400035EB5"
-            BuildableName = "santad"
-            BlueprintName = "santad"
+            BlueprintIdentifier = "C779C4E522F0F51400EE2541"
+            BuildableName = "com.google.santa.daemon"
+            BlueprintName = "com.google.santa.daemon"
             ReferencedContainer = "container:Santa.xcodeproj">
          </BuildableReference>
       </BuildableProductRunnable>
-      <AdditionalOptions>
-      </AdditionalOptions>
    </LaunchAction>
    <ProfileAction
       buildConfiguration = "Release"
@@ -75,9 +62,9 @@
          runnableDebuggingMode = "0">
          <BuildableReference
             BuildableIdentifier = "primary"
-            BlueprintIdentifier = "0D9A7F3C1759330400035EB5"
-            BuildableName = "santad"
-            BlueprintName = "santad"
+            BlueprintIdentifier = "C779C4E522F0F51400EE2541"
+            BuildableName = "com.google.santa.daemon"
+            BlueprintName = "com.google.santa.daemon"
             ReferencedContainer = "container:Santa.xcodeproj">
          </BuildableReference>
       </BuildableProductRunnable>

Santa.xcworkspace/contents.xcworkspacedata

@@ -1 +1,10 @@
-<?xml version='1.0' encoding='UTF-8'?><Workspace version='1.0'><FileRef location='group:Santa.xcodeproj'/><FileRef location='group:Pods/Pods.xcodeproj'/></Workspace>
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "group:Santa.xcodeproj">
+   </FileRef>
+   <FileRef
+      location = "group:Pods/Pods.xcodeproj">
+   </FileRef>
+</Workspace>

Source/SantaGUI/Resources/Santa-Prefix.pch

@@ -1,3 +0,0 @@
-#ifdef __OBJC__
-  #import <Cocoa/Cocoa.h>
-#endif

Source/SantaGUI/SNTAppDelegate.m

@@ -1,124 +0,0 @@
-/// Copyright 2015 Google Inc. All rights reserved.
-///
-/// Licensed under the Apache License, Version 2.0 (the "License");
-/// you may not use this file except in compliance with the License.
-/// You may obtain a copy of the License at
-///
-///    http://www.apache.org/licenses/LICENSE-2.0
-///
-///    Unless required by applicable law or agreed to in writing, software
-///    distributed under the License is distributed on an "AS IS" BASIS,
-///    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-///    See the License for the specific language governing permissions and
-///    limitations under the License.
-
-#import "SNTAppDelegate.h"
-
-#import "SNTAboutWindowController.h"
-#import "SNTConfigurator.h"
-#import "SNTFileWatcher.h"
-#import "SNTNotificationManager.h"
-#import "SNTStrengthify.h"
-#import "SNTXPCConnection.h"
-#import "SNTXPCControlInterface.h"
-
-@interface SNTAppDelegate ()
-@property SNTAboutWindowController *aboutWindowController;
-@property SNTFileWatcher *configFileWatcher;
-@property SNTNotificationManager *notificationManager;
-@property SNTXPCConnection *listener;
-@end
-
-@implementation SNTAppDelegate
-
-#pragma mark App Delegate methods
-
-- (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
-  [self setupMenu];
-
-  self.configFileWatcher = [[SNTFileWatcher alloc] initWithFilePath:kDefaultConfigFilePath
-                                                            handler:^(unsigned long data) {
-    if (! (data & DISPATCH_VNODE_ATTRIB)) [[SNTConfigurator configurator] reloadConfigData];
-  }];
-
-  self.notificationManager = [[SNTNotificationManager alloc] init];
-
-  NSNotificationCenter *workspaceNotifications = [[NSWorkspace sharedWorkspace] notificationCenter];
-
-  [workspaceNotifications addObserverForName:NSWorkspaceSessionDidResignActiveNotification
-                                      object:nil
-                                       queue:[NSOperationQueue currentQueue]
-                                  usingBlock:^(NSNotification *note) {
-    self.listener.invalidationHandler = nil;
-    [self.listener invalidate];
-    self.listener = nil;
-  }];
-  [workspaceNotifications addObserverForName:NSWorkspaceSessionDidBecomeActiveNotification
-                                      object:nil
-                                       queue:[NSOperationQueue currentQueue]
-                                  usingBlock:^(NSNotification *note) {
-    [self attemptReconnection];
-  }];
-
-  [self createConnection];
-}
-
-- (BOOL)applicationShouldHandleReopen:(NSApplication *)sender hasVisibleWindows:(BOOL)flag {
-  self.aboutWindowController = [[SNTAboutWindowController alloc] init];
-  [self.aboutWindowController showWindow:self];
-  return NO;
-}
-
-#pragma mark Connection handling
-
-- (void)createConnection {
-  dispatch_semaphore_t sema = dispatch_semaphore_create(0);
-
-  WEAKIFY(self);
-
-  // Create listener for return connection from daemon.
-  NSXPCListener *listener = [NSXPCListener anonymousListener];
-  self.listener = [[SNTXPCConnection alloc] initServerWithListener:listener];
-  self.listener.exportedInterface = [SNTXPCNotifierInterface notifierInterface];
-  self.listener.exportedObject = self.notificationManager;
-  self.listener.acceptedHandler = ^{
-    dispatch_semaphore_signal(sema);
-  };
-  self.listener.invalidationHandler = ^{
-    STRONGIFY(self);
-    [self attemptReconnection];
-  };
-  [self.listener resume];
-
-  // Tell daemon to connect back to the above listener.
-  SNTXPCConnection *daemonConn = [SNTXPCControlInterface configuredConnection];
-  [daemonConn resume];
-  [[daemonConn remoteObjectProxy] setNotificationListener:listener.endpoint];
-
-  // Now wait for the connection to come in.
-  if (dispatch_semaphore_wait(sema, dispatch_time(DISPATCH_TIME_NOW, 5 * NSEC_PER_SEC))) {
-    [self attemptReconnection];
-  }
-}
-
-- (void)attemptReconnection {
-  [self performSelectorInBackground:@selector(createConnection) withObject:nil];
-}
-
-#pragma mark Menu Management
-
-- (void)setupMenu {
-  // Whilst the user will never see the menu, having one with the Copy and Select All options
-  // allows the shortcuts for these items to work, which is useful for being able to copy
-  // information from notifications. The mainMenu must have a nested menu for this to work properly.
-  NSMenu *mainMenu = [[NSMenu alloc] init];
-  NSMenu *editMenu = [[NSMenu alloc] init];
-  [editMenu addItemWithTitle:@"Copy" action:@selector(copy:) keyEquivalent:@"c"];
-  [editMenu addItemWithTitle:@"Select All" action:@selector(selectAll:) keyEquivalent:@"a"];
-  NSMenuItem *editMenuItem = [[NSMenuItem alloc] init];
-  [editMenuItem setSubmenu:editMenu];
-  [mainMenu addItem:editMenuItem];
-  [NSApp setMainMenu:mainMenu];
-}
-
-@end

Source/SantaGUI/SNTNotificationManager.m

@@ -1,138 +0,0 @@
-/// Copyright 2015 Google Inc. All rights reserved.
-///
-/// Licensed under the Apache License, Version 2.0 (the "License");
-/// you may not use this file except in compliance with the License.
-/// You may obtain a copy of the License at
-///
-///    http://www.apache.org/licenses/LICENSE-2.0
-///
-///    Unless required by applicable law or agreed to in writing, software
-///    distributed under the License is distributed on an "AS IS" BASIS,
-///    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-///    See the License for the specific language governing permissions and
-///    limitations under the License.
-
-#import "SNTNotificationManager.h"
-
-#import "SNTBlockMessage.h"
-#import "SNTConfigurator.h"
-#import "SNTLogging.h"
-#import "SNTStoredEvent.h"
-
-@interface SNTNotificationManager ()
-///  The currently displayed notification
-@property SNTMessageWindowController *currentWindowController;
-
-///  The queue of pending notifications
-@property(readonly) NSMutableArray *pendingNotifications;
-@end
-
-@implementation SNTNotificationManager
-
-static NSString * const silencedNotificationsKey = @"SilencedNotifications";
-
-- (instancetype)init {
-  self = [super init];
-  if (self) {
-    _pendingNotifications = [[NSMutableArray alloc] init];
-  }
-  return self;
-}
-
-- (void)windowDidCloseSilenceHash:(NSString *)hash {
-  if (hash) [self updateSilenceDate:[NSDate date] forHash:hash];
-
-  [self.pendingNotifications removeObject:self.currentWindowController];
-  self.currentWindowController = nil;
-
-  if ([self.pendingNotifications count]) {
-    self.currentWindowController = [self.pendingNotifications firstObject];
-    [self.currentWindowController showWindow:self];
-  } else {
-    [NSApp hide:self];
-  }
-}
-
-- (void)updateSilenceDate:(NSDate *)date forHash:(NSString *)hash {
-  NSUserDefaults *ud = [NSUserDefaults standardUserDefaults];
-  NSMutableDictionary *d = [[ud objectForKey:silencedNotificationsKey] mutableCopy];
-  if (!d) d = [NSMutableDictionary dictionary];
-  if (date) {
-    d[hash] = date;
-  } else {
-    [d removeObjectForKey:hash];
-  }
-  [ud setObject:d forKey:silencedNotificationsKey];
-}
-
-#pragma mark SNTNotifierXPC protocol method
-
-- (void)postClientModeNotification:(SNTClientMode)clientmode {
-  NSUserNotification *un = [[NSUserNotification alloc] init];
-  un.title = @"Santa";
-  un.hasActionButton = NO;
-  NSString *customMsg;
-  switch (clientmode) {
-    case SNTClientModeMonitor:
-      un.informativeText = @"Switching into Monitor mode";
-      customMsg = [[SNTConfigurator configurator] modeNotificationMonitor];
-      customMsg = [SNTBlockMessage stringFromHTML:customMsg];
-      if (customMsg.length) un.informativeText = customMsg;
-      break;
-    case SNTClientModeLockdown:
-      un.informativeText = @"Switching into Lockdown mode";
-      customMsg = [[SNTConfigurator configurator] modeNotificationLockdown];
-      customMsg = [SNTBlockMessage stringFromHTML:customMsg];
-      if (customMsg.length) un.informativeText = customMsg;
-      break;
-    default:
-      return;
-  }
-  [[NSUserNotificationCenter defaultUserNotificationCenter] deliverNotification:un];
-}
-
-- (void)postBlockNotification:(SNTStoredEvent *)event withCustomMessage:(NSString *)message {
-  // See if this binary is already in the list of pending notifications.
-  NSPredicate *predicate =
-      [NSPredicate predicateWithFormat:@"event.fileSHA256==%@", event.fileSHA256];
-  if ([[self.pendingNotifications filteredArrayUsingPredicate:predicate] count]) return;
-
-  // See if this binary is silenced.
-  NSUserDefaults *ud = [NSUserDefaults standardUserDefaults];
-  NSDate *silenceDate = [ud objectForKey:silencedNotificationsKey][event.fileSHA256];
-  if ([silenceDate isKindOfClass:[NSDate class]]) {
-    NSDate *oneDayAgo = [NSDate dateWithTimeIntervalSinceNow:-86400];
-    if ([silenceDate compare:[NSDate date]] == NSOrderedDescending) {
-      LOGI(@"Notification silence: date is in the future, ignoring");
-      [self updateSilenceDate:nil forHash:event.fileSHA256];
-    } else if ([silenceDate compare:oneDayAgo] == NSOrderedAscending) {
-      LOGI(@"Notification silence: date is more than one day ago, ignoring");
-      [self updateSilenceDate:nil forHash:event.fileSHA256];
-    } else {
-      LOGI(@"Notification silence: dropping notification for %@", event.fileSHA256);
-      return;
-    }
-  }
-
-  if (!event) {
-    LOGI(@"Error: Missing event object in message received from daemon!");
-    return;
-  }
-
-  // Notifications arrive on a background thread but UI updates must happen on the main thread.
-  // This includes making windows.
-  dispatch_async(dispatch_get_main_queue(), ^{
-    SNTMessageWindowController *pendingMsg =
-        [[SNTMessageWindowController alloc] initWithEvent:event andMessage:message];
-    pendingMsg.delegate = self;
-    [self.pendingNotifications addObject:pendingMsg];
-
-    // If a notification isn't currently being displayed, display the incoming one.
-    if (!self.currentWindowController) {
-      self.currentWindowController = pendingMsg;
-      [pendingMsg showWindow:nil];
-    }
-  });
-}
-
-@end

Source/common/BUILD

@@ -0,0 +1,212 @@
+package(default_visibility = ["//visibility:public"])
+
+licenses(["notice"])  # Apache 2.0
+
+load("//:helper.bzl", "santa_unit_test")
+
+objc_library(
+    name = "SNTBlockMessage",
+    srcs = ["SNTBlockMessage.m"],
+    hdrs = ["SNTBlockMessage.h"],
+    deps = [
+        ":SNTConfigurator",
+        ":SNTStoredEvent",
+    ],
+)
+
+objc_library(
+    name = "SNTBlockMessage_SantaGUI",
+    srcs = ["SNTBlockMessage.m"],
+    hdrs = ["SNTBlockMessage.h"],
+    defines = ["SANTAGUI"],
+    deps = [
+        ":SNTConfigurator",
+        ":SNTStoredEvent",
+    ],
+)
+
+objc_library(
+    name = "SNTCachedDecision",
+    srcs = ["SNTCachedDecision.m"],
+    hdrs = ["SNTCachedDecision.h"],
+    deps = [
+        ":SNTCommonEnums",
+        ":SNTKernelCommon",
+    ],
+)
+
+cc_library(
+    name = "SNTCommonEnums",
+    hdrs = ["SNTCommonEnums.h"],
+)
+
+objc_library(
+    name = "SNTConfigurator",
+    srcs = ["SNTConfigurator.m"],
+    hdrs = ["SNTConfigurator.h"],
+    deps = [
+        ":SNTCommonEnums",
+        ":SNTLogging",
+        ":SNTStrengthify",
+        ":SNTSystemInfo",
+    ],
+)
+
+objc_library(
+    name = "SNTDropRootPrivs",
+    srcs = ["SNTDropRootPrivs.m"],
+    hdrs = ["SNTDropRootPrivs.h"],
+)
+
+objc_library(
+    name = "SNTFileInfo",
+    srcs = ["SNTFileInfo.m"],
+    hdrs = ["SNTFileInfo.h"],
+    deps = [
+        "@FMDB",
+        "@MOLCodesignChecker",
+    ],
+)
+
+cc_library(
+    name = "SNTKernelCommon",
+    hdrs = ["SNTKernelCommon.h"],
+)
+
+cc_library(
+    name = "SNTLoggingKernel",
+    hdrs = ["SNTLogging.h"],
+)
+
+objc_library(
+    name = "SNTLogging",
+    srcs = ["SNTLogging.m"],
+    hdrs = ["SNTLogging.h"],
+)
+
+cc_library(
+    name = "SNTPrefixTree",
+    srcs = ["SNTPrefixTree.cc"],
+    hdrs = ["SNTPrefixTree.h"],
+    copts = ["-std=c++11"],
+    deps = [":SNTLogging"],
+)
+
+cc_library(
+    name = "SNTPrefixTreeKernel",
+    srcs = ["SNTPrefixTree.cc"],
+    hdrs = ["SNTPrefixTree.h"],
+    copts = [
+        "-std=c++11",
+        "-mkernel",
+        "-I__BAZEL_XCODE_SDKROOT__/System/Library/Frameworks/Kernel.framework/Headers",
+    ],
+    defines = ["KERNEL"],
+    deps = [":SNTLoggingKernel"],
+)
+
+objc_library(
+    name = "SNTRule",
+    srcs = ["SNTRule.m"],
+    hdrs = ["SNTRule.h"],
+    deps = [":SNTCommonEnums"],
+)
+
+objc_library(
+    name = "SNTStoredEvent",
+    srcs = ["SNTStoredEvent.m"],
+    hdrs = ["SNTStoredEvent.h"],
+    deps = [
+        ":SNTCommonEnums",
+        "@MOLCertificate",
+    ],
+)
+
+cc_library(
+    name = "SNTStrengthify",
+    hdrs = ["SNTStrengthify.h"],
+)
+
+objc_library(
+    name = "SNTSystemInfo",
+    srcs = ["SNTSystemInfo.m"],
+    hdrs = ["SNTSystemInfo.h"],
+    sdk_frameworks = ["IOKit"],
+)
+
+objc_library(
+    name = "SNTXPCBundleServiceInterface",
+    srcs = ["SNTXPCBundleServiceInterface.m"],
+    hdrs = ["SNTXPCBundleServiceInterface.h"],
+    deps = [
+        ":SNTStoredEvent",
+        "@MOLXPCConnection",
+    ],
+)
+
+objc_library(
+    name = "SNTXPCControlInterface",
+    srcs = ["SNTXPCControlInterface.m"],
+    hdrs = ["SNTXPCControlInterface.h"],
+    deps = [
+        ":SNTConfigurator",
+        ":SNTStoredEvent",
+        ":SNTXPCUnprivilegedControlInterface",
+        "@MOLXPCConnection",
+    ],
+)
+
+objc_library(
+    name = "SNTXPCNotifierInterface",
+    srcs = ["SNTXPCNotifierInterface.m"],
+    hdrs = ["SNTXPCNotifierInterface.h"],
+    deps = [
+        ":SNTCommonEnums",
+        ":SNTXPCBundleServiceInterface",
+    ],
+)
+
+objc_library(
+    name = "SNTXPCSyncdInterface",
+    srcs = ["SNTXPCSyncdInterface.m"],
+    hdrs = ["SNTXPCSyncdInterface.h"],
+    deps = [
+        ":SNTCommonEnums",
+        ":SNTStoredEvent",
+    ],
+)
+
+objc_library(
+    name = "SNTXPCUnprivilegedControlInterface",
+    srcs = ["SNTXPCUnprivilegedControlInterface.m"],
+    hdrs = ["SNTXPCUnprivilegedControlInterface.h"],
+    deps = [
+        ":SNTCommonEnums",
+        ":SNTKernelCommon",
+        ":SNTRule",
+        ":SNTStoredEvent",
+        ":SNTXPCBundleServiceInterface",
+        "@MOLCertificate",
+        "@MOLXPCConnection",
+    ],
+)
+
+santa_unit_test(
+    name = "SNTFileInfoTest",
+    srcs = ["SNTFileInfoTest.m"],
+    resources = [
+        "testdata/bad_pagezero",
+        "testdata/missing_pagezero",
+    ],
+    structured_resources = glob([
+        "testdata/BundleExample.app/**",
+        "testdata/DirectoryBundle/**",
+    ]),
+    deps = [":SNTFileInfo"],
+)
+
+santa_unit_test(
+    name = "SNTPrefixTreeTest",
+    srcs = ["SNTPrefixTreeTest.mm"],
+    deps = ["SNTPrefixTree"],
+)

Source/common/SNTBlockMessage.h

@@ -12,6 +12,12 @@
 ///    See the License for the specific language governing permissions and
 ///    limitations under the License.
 
+#ifdef SANTAGUI
+#import <Cocoa/Cocoa.h>
+#else
+#import <Foundation/Foundation.h>
+#endif
+
 @class SNTStoredEvent;
 
 @interface SNTBlockMessage : NSObject

Source/common/SNTBlockMessage.m

@@ -12,11 +12,11 @@
 ///    See the License for the specific language governing permissions and
 ///    limitations under the License.
 
-#import "SNTBlockMessage.h"
+#import "Source/common/SNTBlockMessage.h"
 
-#import "SNTConfigurator.h"
-#import "SNTLogging.h"
-#import "SNTStoredEvent.h"
+#import "Source/common/SNTConfigurator.h"
+#import "Source/common/SNTLogging.h"
+#import "Source/common/SNTStoredEvent.h"
 
 @implementation SNTBlockMessage
 
@@ -26,10 +26,24 @@
       @"body {"
       @"  font-family: 'Lucida Grande', 'Helvetica', sans-serif;"
       @"  font-size: 13px;"
-      @"  color: #666;"
+      @"  color: %@;"
       @"  text-align: center;"
       @"}"
+
+      // Supported in beta WebKit. Not sure if it is dynamic when used with NSAttributedString.
+      @"@media (prefers-color-scheme: dark) {"
+      @"  body {"
+      @"    color: #ddd;"
+      @"  }"
+      @"}"
       @"</style></head><body>";
+
+  // Support Dark Mode. Note, the returned NSAttributedString is static and does not update when
+  // the OS switches modes.
+  NSString *mode = [NSUserDefaults.standardUserDefaults stringForKey:@"AppleInterfaceStyle"];
+  BOOL dark =  [mode isEqualToString:@"Dark"];
+  htmlHeader = [NSString stringWithFormat:htmlHeader, dark ? @"#ddd" : @"#333"];
+
   NSString *htmlFooter = @"</body></html>";
 
   NSString *message;
@@ -51,7 +65,7 @@
 
   NSString *fullHTML = [NSString stringWithFormat:@"%@%@%@", htmlHeader, message, htmlFooter];
 
-#ifdef NSAppKitVersionNumber10_0
+#ifdef SANTAGUI
   NSData *htmlData = [fullHTML dataUsingEncoding:NSUTF8StringEncoding];
   return [[NSAttributedString alloc] initWithHTML:htmlData documentAttributes:NULL];
 #else
@@ -92,18 +106,13 @@
 + (NSURL *)eventDetailURLForEvent:(SNTStoredEvent *)event {
   SNTConfigurator *config = [SNTConfigurator configurator];
 
-  NSString *formatStr;
-  if (config.eventDetailBundleURL && event.fileBundleID) {
-    formatStr = config.eventDetailBundleURL;
-  } else {
-    formatStr = config.eventDetailURL;
-  }
-
+  NSString *formatStr = config.eventDetailURL;
   if (!formatStr.length) return nil;
 
   if (event.fileSHA256) {
-    formatStr = [formatStr stringByReplacingOccurrencesOfString:@"%file_sha%"
-                                                     withString:event.fileSHA256];
+    formatStr =
+        [formatStr stringByReplacingOccurrencesOfString:@"%file_sha%"
+                                             withString:event.fileBundleHash ?: event.fileSHA256];
   }
   if (event.executingUser) {
     formatStr = [formatStr stringByReplacingOccurrencesOfString:@"%username%"
@@ -113,14 +122,6 @@
     formatStr = [formatStr stringByReplacingOccurrencesOfString:@"%machine_id%"
                                                      withString:config.machineID];
   }
-  if (event.fileBundleID) {
-    formatStr = [formatStr stringByReplacingOccurrencesOfString:@"%bundle_id%"
-                                                     withString:event.fileBundleID];
-  }
-  if (event.fileBundleVersionString) {
-    formatStr = [formatStr stringByReplacingOccurrencesOfString:@"%bundle_ver%"
-                                                     withString:event.fileBundleVersionString];
-  }
 
   return [NSURL URLWithString:formatStr];
 }

Source/common/SNTCachedDecision.h

@@ -12,19 +12,27 @@
 ///    See the License for the specific language governing permissions and
 ///    limitations under the License.
 
-#import "SNTCommonEnums.h"
+#import <Foundation/Foundation.h>
+
+#import "Source/common/SNTCommonEnums.h"
+#import "Source/common/SNTKernelCommon.h"
+
+@class MOLCertificate;
 
 ///
 ///  Store information about executions from decision making for later logging.
 ///
 @interface SNTCachedDecision : NSObject
 
-@property uint64_t vnodeId;
+@property santa_vnode_id_t vnodeId;
 @property SNTEventState decision;
 @property NSString *decisionExtra;
 @property NSString *sha256;
+
 @property NSString *certSHA256;
 @property NSString *certCommonName;
+@property NSArray<MOLCertificate *> *certChain;
+
 @property NSString *quarantineURL;
 
 @property NSString *customMsg;

Source/common/SNTCachedDecision.m

@@ -12,7 +12,7 @@
 ///    See the License for the specific language governing permissions and
 ///    limitations under the License.
 
-#import "SNTCachedDecision.h"
+#import "Source/common/SNTCachedDecision.h"
 
 @implementation SNTCachedDecision
 @end

Source/common/SNTCommonEnums.h

@@ -12,6 +12,8 @@
 ///    See the License for the specific language governing permissions and
 ///    limitations under the License.
 
+#import <Foundation/Foundation.h>
+
 ///
 ///  These enums are used in various places throughout the Santa client code.
 ///  The integer values are also stored in the database and so shouldn't be changed.
@@ -31,6 +33,9 @@ typedef NS_ENUM(NSInteger, SNTRuleState) {
   SNTRuleStateBlacklist = 2,
   SNTRuleStateSilentBlacklist = 3,
   SNTRuleStateRemove = 4,
+
+  SNTRuleStateWhitelistCompiler = 5,
+  SNTRuleStateWhitelistTransitive = 6,
 };
 
 typedef NS_ENUM(NSInteger, SNTClientMode) {
@@ -41,29 +46,52 @@ typedef NS_ENUM(NSInteger, SNTClientMode) {
 };
 
 typedef NS_ENUM(NSInteger, SNTEventState) {
-  SNTEventStateUnknown,
+  // Bits 0-15 bits store non-decision types
+  SNTEventStateUnknown = 0,
+  SNTEventStateBundleBinary = 1,
 
-  SNTEventStateAllowUnknown = 1,
-  SNTEventStateAllowBinary = 2,
-  SNTEventStateAllowCertificate = 3,
-  SNTEventStateAllowScope = 4,
+  // Bits 16-23 store deny decision types
+  SNTEventStateBlockUnknown = 1 << 16,
+  SNTEventStateBlockBinary = 1 << 17,
+  SNTEventStateBlockCertificate = 1 << 18,
+  SNTEventStateBlockScope = 1 << 19,
 
-  SNTEventStateBlockUnknown = 5,
-  SNTEventStateBlockBinary = 6,
-  SNTEventStateBlockCertificate = 7,
-  SNTEventStateBlockScope = 8,
+  // Bits 24-31 store allow decision types
+  SNTEventStateAllowUnknown = 1 << 24,
+  SNTEventStateAllowBinary = 1 << 25,
+  SNTEventStateAllowCertificate = 1 << 26,
+  SNTEventStateAllowScope = 1 << 27,
+  SNTEventStateAllowCompiler = 1 << 28,
+  SNTEventStateAllowTransitive = 1 << 29,
+  SNTEventStateAllowPendingTransitive = 1 << 30,
 
-  SNTEventStateBundleBinary = 9,
+  // Block and Allow masks
+  SNTEventStateBlock = 0xFF << 16,
+  SNTEventStateAllow = 0xFF << 24
 };
 
 typedef NS_ENUM(NSInteger, SNTRuleTableError) {
   SNTRuleTableErrorEmptyRuleArray,
   SNTRuleTableErrorInsertOrReplaceFailed,
   SNTRuleTableErrorInvalidRule,
-  SNTRuleTableErrorMissingRequiredRule,
   SNTRuleTableErrorRemoveFailed
 };
 
+// This enum type is used to indicate what should be done with the related bundle events that are
+// generated when an initiating blocked bundle event occurs.
+typedef NS_ENUM(NSInteger, SNTBundleEventAction) {
+  SNTBundleEventActionDropEvents,
+  SNTBundleEventActionStoreEvents,
+  SNTBundleEventActionSendEvents,
+};
+
+// Indicates where to store event logs.
+typedef NS_ENUM(NSInteger, SNTEventLogType) {
+  SNTEventLogTypeSyslog,
+  SNTEventLogTypeFilelog,
+};
+
 static const char *kKextPath = "/Library/Extensions/santa-driver.kext";
-static const char *kSantaDPath = "/Library/Extensions/santa-driver.kext/Contents/MacOS/santad";
-static const char *kSantaCtlPath = "/Library/Extensions/santa-driver.kext/Contents/MacOS/santactl";
+static const char *kSantaDPath = "/Applications/Santa.app/Contents/Library/SystemExtensions/com.google.santa.daemon.systemextension/Contents/MacOS/com.google.santa.daemon";
+static const char *kSantaCtlPath = "/Applications/Santa.app/Contents/MacOS/santactl";
+static const char *kSantaAppPath = "/Applications/Santa.app";

Source/common/SNTConfigurator.h

@@ -12,32 +12,28 @@
 ///    See the License for the specific language governing permissions and
 ///    limitations under the License.
 
-#import "SNTCommonEnums.h"
+#import <Foundation/Foundation.h>
+
+#import "Source/common/SNTCommonEnums.h"
 
 ///
 ///  Singleton that provides an interface for managing configuration values on disk
 ///  @note This class is designed as a singleton but that is not strictly enforced.
+///  @note All properties are KVO compliant.
 ///
 @interface SNTConfigurator : NSObject
 
-///  Default config file path
-extern NSString *const kDefaultConfigFilePath;
-
 #pragma mark - Daemon Settings
 
 ///
 ///  The operating mode.
 ///
-@property(nonatomic) SNTClientMode clientMode;
+@property(readonly, nonatomic) SNTClientMode clientMode;
 
 ///
-///  The regex of paths to log file changes for. Regexes are specified in ICU format.
+///  Set the operating mode as received from a sync server.
 ///
-///  The regex flags IXSM can be used, though the s (dotalL) and m (multiline) flags are
-///  pointless as a path only ever has a single line.
-///  If the regex doesn't begin with ^ to match from the beginning of the line, it will be added.
-///
-@property(nonatomic) NSRegularExpression *fileChangesRegex;
+- (void)setSyncServerClientMode:(SNTClientMode)newMode;
 
 ///
 ///  The regex of whitelisted paths. Regexes are specified in ICU format.
@@ -46,7 +42,12 @@ extern NSString *const kDefaultConfigFilePath;
 ///  pointless as a path only ever has a single line.
 ///  If the regex doesn't begin with ^ to match from the beginning of the line, it will be added.
 ///
-@property(nonatomic) NSRegularExpression *whitelistPathRegex;
+@property(readonly, nonatomic) NSRegularExpression *whitelistPathRegex;
+
+///
+///  Set the regex of whitelisted paths as received from a sync server.
+///
+- (void)setSyncServerWhitelistPathRegex:(NSRegularExpression *)re;
 
 ///
 ///  The regex of blacklisted paths. Regexes are specified in ICU format.
@@ -55,7 +56,72 @@ extern NSString *const kDefaultConfigFilePath;
 ///  pointless as a path only ever has a single line.
 ///  If the regex doesn't begin with ^ to match from the beginning of the line, it will be added.
 ///
-@property(nonatomic) NSRegularExpression *blacklistPathRegex;
+@property(readonly, nonatomic) NSRegularExpression *blacklistPathRegex;
+
+///
+///  Set the regex of blacklisted paths as received from a sync server.
+///
+- (void)setSyncServerBlacklistPathRegex:(NSRegularExpression *)re;
+
+///
+///  The regex of paths to log file changes for. Regexes are specified in ICU format.
+///
+///  The regex flags IXSM can be used, though the s (dotalL) and m (multiline) flags are
+///  pointless as a path only ever has a single line.
+///  If the regex doesn't begin with ^ to match from the beginning of the line, it will be added.
+///
+@property(readonly, nonatomic) NSRegularExpression *fileChangesRegex;
+
+///
+///  A list of ignore prefixes which are checked in-kernel.
+///  This is more performant than FileChangesRegex when ignoring whole directory trees.
+///
+///  For example adding a prefix of "/private/tmp/" will turn off file change log generation
+///  in-kernel for that entire tree. Since they are ignored by the kernel, they never reach santad
+///  and are not seen by the fileChangesRegex. Note the trailing "/", without it any file or
+///  directory starting with "/private/tmp" would be ignored.
+///
+///  By default "/." and "/dev/" are added.
+///
+///  Memory in the kernel is precious. A total of MAXPATHLEN (1024) nodes are allowed.
+///  Using all 1024 nodes will result in santa-driver allocating ~2MB of wired memory.
+///  An ASCII character uses 1 node. An UTF-8 encoded Unicode character uses 1-4 nodes.
+///  Prefixes are added to the running config in-order, one by one. The prefix will be ignored if
+///  (the running config's current size) + (the prefix's size) totals up to more than 1024 nodes.
+///  The running config is stored in a prefix tree.
+///  Prefixes that share prefixes are effectively de-duped; their shared node sized components only
+///  take up 1 node. For example these 3 prefixes all have a common prefix of "/private/".
+///  They will only take up 21 nodes instead of 39.
+///
+///  "/private/tmp/"
+///  "/private/var/"
+///  "/private/new/"
+///
+///                                                              -> [t] -> [m] -> [p] -> [/]
+///
+///  [/] -> [p] -> [r] -> [i] -> [v] -> [a] -> [t] -> [e] -> [/] -> [v] -> [a] -> [r] -> [/]
+///
+///                                                              -> [n] -> [e] -> [w] -> [/]
+///
+///  Prefixes with Unicode characters work similarly. Assuming a UTF-8 encoding these two prefixes
+///  are actually the same for the first 3 nodes. They take up 7 nodes instead of 10.
+///
+///  "/🤘"
+///  "/🖖"
+///
+///                          -> [0xa4] -> [0x98]
+///
+///  [/] -> [0xf0] -> [0x9f]
+///
+///                          -> [0x96] -> [0x96]
+///
+///  To disable file change logging completely add "/".
+///  TODO(bur): Make this default if no FileChangesRegex is set.
+///
+///  Filters are only applied on santad startup.
+///  TODO(bur): Support add / remove of filters while santad is running.
+///
+@property(readonly, nonatomic) NSArray *fileChangesPrefixFilters;
 
 ///
 ///  Enable __PAGEZERO protection, defaults to YES
@@ -64,6 +130,49 @@ extern NSString *const kDefaultConfigFilePath;
 ///
 @property(readonly, nonatomic) BOOL enablePageZeroProtection;
 
+///
+///  Enable bad signature protection, defaults to NO.
+///  When enabled, a binary that is signed but has a bad signature (cert revoked, binary
+///  tampered with, etc.) will be blocked regardless of client-mode unless a binary whitelist
+///  rule exists.
+///
+@property(readonly, nonatomic) BOOL enableBadSignatureProtection;
+
+///
+///  Defines how event logs are stored. Options are:
+///    SNTEventLogTypeSyslog: Sent to ASL or ULS (if built with the 10.12 SDK or later).
+///    SNTEventLogTypeFilelog: Sent to a file on disk. Use eventLogPath to specify a path.
+///    Defaults to SNTEventLogTypeFilelog.
+///    For mobileconfigs use EventLogType as the key and syslog or filelog strings as the value.
+///
+///  @note: This property is KVO compliant, but should only be read once at santad startup.
+///
+@property(readonly, nonatomic) SNTEventLogType eventLogType;
+
+///
+///  If eventLogType is set to Filelog, eventLogPath will provide the path to save logs.
+///  Defaults to /var/db/santa/santa.log.
+///
+///  @note: This property is KVO compliant, but should only be read once at santad startup.
+///
+@property(readonly, nonatomic) NSString *eventLogPath;
+
+///
+/// Enabling this appends the Santa machine ID to the end of each log line. If nothing
+/// has been overriden, this is the host's UUID.
+/// Defaults to NO.
+///
+@property(readonly, nonatomic) BOOL enableMachineIDDecoration;
+
+///
+///  Use the bundled SystemExtension on macOS 10.15+, defaults to YES.
+///  Disable to continue using the bundled KEXT.
+///  This is a one way switch, if this is ever true on macOS 10.15+ the KEXT will be deleted.
+///  This gives admins control over the timing of switching to the SystemExtension. The intended use case is to have an MDM deliver
+///  the requisite SystemExtension and TCC profiles before attempting to load.
+///
+@property(readonly, nonatomic) BOOL enableSystemExtension;
+
 #pragma mark - GUI Settings
 
 ///
@@ -75,8 +184,6 @@ extern NSString *const kDefaultConfigFilePath;
 ///
 ///  When the user gets a block notification, a button can be displayed which will
 ///  take them to a web page with more information about that event.
-///  There are two properties, one for individual binaries and one for binaries that are part
-///  of a bundle. If the latter is not set the former will be used.
 ///
 ///  This property contains a kind of format string to be turned into the URL to send them to.
 ///  The following sequences will be replaced in the final URL:
@@ -84,15 +191,12 @@ extern NSString *const kDefaultConfigFilePath;
 ///  %file_sha%    -- SHA-256 of the file that was blocked.
 ///  %machine_id%  -- ID of the machine.
 ///  %username%    -- executing user.
-///  %bundle_id%   -- bundle id of the binary, if applicable.
-///  %bundle_ver%  -- bundle version of the binary, if applicable.
 ///
 ///  @note: This is not an NSURL because the format-string parsing is done elsewhere.
 ///
 ///  If this item isn't set, the Open Event button will not be displayed.
 ///
 @property(readonly, nonatomic) NSString *eventDetailURL;
-@property(readonly, nonatomic) NSString *eventDetailBundleURL;
 
 ///
 ///  Related to the above property, this string represents the text to show on the button.
@@ -131,21 +235,20 @@ extern NSString *const kDefaultConfigFilePath;
 ///
 @property(readonly, nonatomic) NSURL *syncBaseURL;
 
-///
-///  If YES, mid-execution event uploads are skipped.
-///  This property is never stored on disk.
-///
-@property BOOL syncBackOff;
-
 ///
 ///  The machine owner.
 ///
 @property(readonly, nonatomic) NSString *machineOwner;
 
 ///
-///  The last date of successful sync.
+///  The last date of a successful full sync.
 ///
-@property(nonatomic) NSDate *syncLastSuccess;
+@property(nonatomic) NSDate *fullSyncLastSuccess;
+
+///
+///  The last date of a successful rule sync.
+///
+@property(nonatomic) NSDate *ruleSyncLastSuccess;
 
 ///
 ///  If YES a clean sync is required.
@@ -157,6 +260,21 @@ extern NSString *const kDefaultConfigFilePath;
 ///
 @property(readonly, nonatomic) NSString *machineID;
 
+///
+///  If YES, enables bundle detection for blocked events. This property is not stored on disk.
+///  Its value is set by a sync server that supports bundles. Defaults to NO.
+///
+@property BOOL enableBundles;
+
+#pragma mark Transitive Whitelisting Settings
+
+///
+///  If YES, binaries marked with SNTRuleStateWhitelistCompiler rules are allowed to transitively
+///  whitelist any executables that they produce.  If NO, SNTRuleStateWhitelistCompiler rules are
+///  interpreted as if they were simply SNTRuleStateWhitelist rules.  Defaults to NO.
+///
+@property BOOL enableTransitiveWhitelisting;
+
 #pragma mark Server Auth Settings
 
 ///
@@ -200,15 +318,8 @@ extern NSString *const kDefaultConfigFilePath;
 + (instancetype)configurator;
 
 ///
-///  Designated initializer.
+///  Clear the sync server configuration from the effective configuration.
 ///
-///  @param filePath The path to the file to use as a backing store.
-///
-- (instancetype)initWithFilePath:(NSString *)filePath;
-
-///
-///  Re-read config data from disk.
-///
-- (void)reloadConfigData;
+- (void)clearSyncState;
 
 @end

Source/common/SNTConfigurator.m

@@ -12,48 +12,37 @@
 ///    See the License for the specific language governing permissions and
 ///    limitations under the License.
 
-#import "SNTConfigurator.h"
+#import "Source/common/SNTConfigurator.h"
 
-#import "SNTLogging.h"
-#import "SNTSystemInfo.h"
+#include <sys/stat.h>
+
+#import "Source/common/SNTLogging.h"
+#import "Source/common/SNTStrengthify.h"
+#import "Source/common/SNTSystemInfo.h"
 
 @interface SNTConfigurator ()
-@property NSString *configFilePath;
-@property NSMutableDictionary *configData;
+/// A NSUserDefaults object set to use the com.google.santa suite.
+@property(readonly, nonatomic) NSUserDefaults *defaults;
 
-/// Creating NSRegularExpression objects is not fast, so cache them.
-@property NSRegularExpression *cachedFileChangesRegex;
-@property NSRegularExpression *cachedWhitelistDirRegex;
-@property NSRegularExpression *cachedBlacklistDirRegex;
+// Keys and expected value types.
+@property(readonly, nonatomic) NSDictionary *syncServerKeyTypes;
+@property(readonly, nonatomic) NSDictionary *forcedConfigKeyTypes;
 
-/// Array of keys that cannot be changed while santad is running if santad didn't make the change.
-@property(readonly) NSArray *protectedKeys;
+/// Holds the configurations from a sync server and mobileconfig.
+@property NSMutableDictionary *syncState;
+@property NSMutableDictionary *configState;
 @end
 
 @implementation SNTConfigurator
 
-/// The hard-coded path to the config file
-NSString *const kDefaultConfigFilePath = @"/var/db/santa/config.plist";
+/// The hard-coded path to the sync state file.
+NSString *const kSyncStateFilePath = @"/var/db/santa/sync-state.plist";
 
-/// The keys in the config file
-static NSString *const kClientModeKey = @"ClientMode";
-static NSString *const kFileChangesRegexKey = @"FileChangesRegex";
-static NSString *const kWhitelistRegexKey = @"WhitelistRegex";
-static NSString *const kBlacklistRegexKey = @"BlacklistRegex";
-static NSString *const kEnablePageZeroProtectionKey = @"EnablePageZeroProtection";
-
-static NSString *const kMoreInfoURLKey = @"MoreInfoURL";
-static NSString *const kEventDetailURLKey = @"EventDetailURL";
-static NSString *const kEventDetailBundleURLKey = @"EventDetailBundleURL";
-static NSString *const kEventDetailTextKey = @"EventDetailText";
-static NSString *const kUnknownBlockMessage = @"UnknownBlockMessage";
-static NSString *const kBannedBlockMessage = @"BannedBlockMessage";
-static NSString *const kModeNotificationMonitor = @"ModeNotificationMonitor";
-static NSString *const kModeNotificationLockdown = @"ModeNotificationLockdown";
+/// The domain used by mobileconfig.
+static NSString *const kMobileConfigDomain = @"com.google.santa";
 
+/// The keys managed by a mobileconfig.
 static NSString *const kSyncBaseURLKey = @"SyncBaseURL";
-static NSString *const kSyncLastSuccess = @"SyncLastSuccess";
-static NSString *const kSyncCleanRequired = @"SyncCleanRequired";
 static NSString *const kClientAuthCertificateFileKey = @"ClientAuthCertificateFile";
 static NSString *const kClientAuthCertificatePasswordKey = @"ClientAuthCertificatePassword";
 static NSString *const kClientAuthCertificateCNKey = @"ClientAuthCertificateCN";
@@ -63,18 +52,100 @@ static NSString *const kServerAuthRootsFileKey = @"ServerAuthRootsFile";
 
 static NSString *const kMachineOwnerKey = @"MachineOwner";
 static NSString *const kMachineIDKey = @"MachineID";
-
 static NSString *const kMachineOwnerPlistFileKey = @"MachineOwnerPlist";
 static NSString *const kMachineOwnerPlistKeyKey = @"MachineOwnerKey";
-
 static NSString *const kMachineIDPlistFileKey = @"MachineIDPlist";
 static NSString *const kMachineIDPlistKeyKey = @"MachineIDKey";
 
-- (instancetype)initWithFilePath:(NSString *)filePath {
+static NSString *const kMoreInfoURLKey = @"MoreInfoURL";
+static NSString *const kEventDetailURLKey = @"EventDetailURL";
+static NSString *const kEventDetailTextKey = @"EventDetailText";
+static NSString *const kUnknownBlockMessage = @"UnknownBlockMessage";
+static NSString *const kBannedBlockMessage = @"BannedBlockMessage";
+static NSString *const kModeNotificationMonitor = @"ModeNotificationMonitor";
+static NSString *const kModeNotificationLockdown = @"ModeNotificationLockdown";
+
+static NSString *const kEnablePageZeroProtectionKey = @"EnablePageZeroProtection";
+static NSString *const kEnableBadSignatureProtectionKey = @"EnableBadSignatureProtection";
+
+static NSString *const kFileChangesRegexKey = @"FileChangesRegex";
+static NSString *const kFileChangesPrefixFiltersKey = @"FileChangesPrefixFilters";
+
+static NSString *const kEventLogType = @"EventLogType";
+static NSString *const kEventLogPath = @"EventLogPath";
+
+static NSString *const kEnableMachineIDDecoration = @"EnableMachineIDDecoration";
+
+static NSString *const kEnableSystemExtension = @"EnableSystemExtension";
+
+// The keys managed by a sync server or mobileconfig.
+static NSString *const kClientModeKey = @"ClientMode";
+static NSString *const kEnableTransitiveWhitelistingKey = @"EnableTransitiveWhitelisting";
+static NSString *const kWhitelistRegexKey = @"WhitelistRegex";
+static NSString *const kBlacklistRegexKey = @"BlacklistRegex";
+
+// The keys managed by a sync server.
+static NSString *const kFullSyncLastSuccess = @"FullSyncLastSuccess";
+static NSString *const kRuleSyncLastSuccess = @"RuleSyncLastSuccess";
+static NSString *const kSyncCleanRequired = @"SyncCleanRequired";
+
+- (instancetype)init {
   self = [super init];
   if (self) {
-    _configFilePath = filePath;
-    [self reloadConfigData];
+    Class number = [NSNumber class];
+    Class re = [NSRegularExpression class];
+    Class date = [NSDate class];
+    Class string = [NSString class];
+    Class data = [NSData class];
+    Class array = [NSArray class];
+    _syncServerKeyTypes = @{
+      kClientModeKey : number,
+      kEnableTransitiveWhitelistingKey : number,
+      kWhitelistRegexKey : re,
+      kBlacklistRegexKey : re,
+      kFullSyncLastSuccess : date,
+      kRuleSyncLastSuccess : date,
+      kSyncCleanRequired : number
+    };
+    _forcedConfigKeyTypes = @{
+      kClientModeKey : number,
+      kEnableTransitiveWhitelistingKey : number,
+      kFileChangesRegexKey : re,
+      kFileChangesPrefixFiltersKey : array,
+      kWhitelistRegexKey : re,
+      kBlacklistRegexKey : re,
+      kEnablePageZeroProtectionKey : number,
+      kEnableBadSignatureProtectionKey: number,
+      kMoreInfoURLKey : string,
+      kEventDetailURLKey : string,
+      kEventDetailTextKey : string,
+      kUnknownBlockMessage : string,
+      kBannedBlockMessage : string,
+      kModeNotificationMonitor : string,
+      kModeNotificationLockdown : string,
+      kSyncBaseURLKey : string,
+      kClientAuthCertificateFileKey : string,
+      kClientAuthCertificatePasswordKey : string,
+      kClientAuthCertificateCNKey : string,
+      kClientAuthCertificateIssuerKey : string,
+      kServerAuthRootsDataKey  : data,
+      kServerAuthRootsFileKey : string,
+      kMachineOwnerKey : string,
+      kMachineIDKey : string,
+      kMachineOwnerPlistFileKey : string,
+      kMachineOwnerPlistKeyKey : string,
+      kMachineIDPlistFileKey : string,
+      kMachineIDPlistKeyKey : string,
+      kEventLogType : string,
+      kEventLogPath : string,
+      kEnableMachineIDDecoration : number,
+      kEnableSystemExtension : number,
+    };
+    _defaults = [NSUserDefaults standardUserDefaults];
+    [_defaults addSuiteNamed:@"com.google.santa"];
+    _configState = [self readForcedConfig];
+    _syncState = [self readSyncStateFromDisk] ?: [NSMutableDictionary dictionary];
+    [self startWatchingDefaults];
   }
   return self;
 }
@@ -82,291 +153,483 @@ static NSString *const kMachineIDPlistKeyKey = @"MachineIDKey";
 #pragma mark Singleton retriever
 
 + (instancetype)configurator {
-  static SNTConfigurator *sharedConfigurator = nil;
+  static SNTConfigurator *sharedConfigurator;
   static dispatch_once_t onceToken;
   dispatch_once(&onceToken, ^{
-    sharedConfigurator = [[SNTConfigurator alloc] initWithFilePath:kDefaultConfigFilePath];
+    sharedConfigurator = [[SNTConfigurator alloc] init];
   });
   return sharedConfigurator;
 }
 
-#pragma mark Protected Keys
++ (NSSet *)syncAndConfigStateSet {
+  static NSSet *set;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    set = [[self syncStateSet] setByAddingObjectsFromSet:[self configStateSet]];
+  });
+  return set;
+}
 
-- (NSArray *)protectedKeys {
-  return @[ kClientModeKey, kWhitelistRegexKey, kBlacklistRegexKey,
-            kFileChangesRegexKey, kSyncBaseURLKey ];
++ (NSSet *)syncStateSet {
+  static NSSet *set;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    set = [NSSet setWithObject:NSStringFromSelector(@selector(syncState))];
+  });
+  return set;
+}
+
++ (NSSet *)configStateSet {
+  static NSSet *set;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    set = [NSSet setWithObject:NSStringFromSelector(@selector(configState))];
+  });
+  return set;
+}
+
+#pragma mark KVO Dependencies
+
++ (NSSet *)keyPathsForValuesAffectingClientMode {
+  return [self syncAndConfigStateSet];
+}
+
++ (NSSet *)keyPathsForValuesAffectingWhitelistPathRegex {
+  return [self syncAndConfigStateSet];
+}
+
++ (NSSet *)keyPathsForValuesAffectingBlacklistPathRegex {
+  return [self syncAndConfigStateSet];
+}
+
++ (NSSet *)keyPathsForValuesAffectingFileChangesRegex {
+  return [self configStateSet];
+}
+
++ (NSSet *)keyPathsForValuesAffectingFileChangesPrefixFiltersKey {
+  return [self configStateSet];
+}
+
++ (NSSet *)keyPathsForValuesAffectingSyncBaseURL {
+  return [self configStateSet];
+}
+
++ (NSSet *)keyPathsForValuesAffectingEnablePageZeroProtection {
+  return [self configStateSet];
+}
+
++ (NSSet *)keyPathsForValuesAffectingMoreInfoURL {
+  return [self configStateSet];
+}
+
++ (NSSet *)keyPathsForValuesAffectingEventDetailURL {
+  return [self configStateSet];
+}
+
++ (NSSet *)keyPathsForValuesAffectingEventDetailText {
+  return [self configStateSet];
+}
+
++ (NSSet *)keyPathsForValuesAffectingUnknownBlockMessage {
+  return [self configStateSet];
+}
+
++ (NSSet *)keyPathsForValuesAffectingBannedBlockMessage {
+  return [self configStateSet];
+}
+
++ (NSSet *)keyPathsForValuesAffectingModeNotificationMonitor {
+  return [self configStateSet];
+}
+
++ (NSSet *)keyPathsForValuesAffectingModeNotificationLockdown {
+  return [self configStateSet];
+}
+
++ (NSSet *)keyPathsForValuesAffectingSyncClientAuthCertificateFile {
+  return [self configStateSet];
+}
+
++ (NSSet *)keyPathsForValuesAffectingSyncClientAuthCertificatePassword {
+  return [self configStateSet];
+}
+
++ (NSSet *)keyPathsForValuesAffectingSyncClientAuthCertificateCn {
+  return [self configStateSet];
+}
+
++ (NSSet *)keyPathsForValuesAffectingSyncClientAuthCertificateIssuer {
+  return [self configStateSet];
+}
+
++ (NSSet *)keyPathsForValuesAffectingSyncServerAuthRootsData {
+  return [self configStateSet];
+}
+
++ (NSSet *)keyPathsForValuesAffectingSyncServerAuthRootsFile {
+  return [self configStateSet];
+}
+
++ (NSSet *)keyPathsForValuesAffectingMachineOwner {
+  return [self configStateSet];
+}
+
++ (NSSet *)keyPathsForValuesAffectingMachineID {
+  return [self configStateSet];
+}
+
++ (NSSet *)keyPathsForValuesAffectingFullSyncLastSuccess {
+  return [self syncStateSet];
+}
+
++ (NSSet *)keyPathsForValuesAffectingRuleSyncLastSuccess {
+  return [self syncStateSet];
+}
+
++ (NSSet *)keyPathsForValuesAffectingSyncCleanRequired {
+  return [self syncStateSet];
+}
+
++ (NSSet *)keyPathsForValuesAffectingEventLogType {
+  return [self configStateSet];
+}
+
++ (NSSet *)keyPathsForValuesAffectingEventLogPath {
+  return [self configStateSet];
+}
+
++ (NSSet *)keyPathsForValuesAffectingEnableMachineIDDecoration {
+  return [self configStateSet];
+}
+
++ (NSSet *)keyPathsForValuesAffectingEnableTransitiveWhitelisting {
+  return [self syncAndConfigStateSet];
+}
+
++ (NSSet *)keyPathsForValuesAffectingEnableSystemExtension {
+  return [self configStateSet];
 }
 
 #pragma mark Public Interface
 
 - (SNTClientMode)clientMode {
-  NSInteger cm = [self.configData[kClientModeKey] longValue];
+  SNTClientMode cm = [self.syncState[kClientModeKey] longLongValue];
   if (cm == SNTClientModeMonitor || cm == SNTClientModeLockdown) {
-    return (SNTClientMode)cm;
-  } else {
-    LOGE(@"Client mode was set to bad value: %ld. Resetting to MONITOR.", cm);
-    self.configData[kClientModeKey] = @(SNTClientModeMonitor);
-    return SNTClientModeMonitor;
+    return cm;
   }
+
+  cm = [self.configState[kClientModeKey] longLongValue];
+  if (cm == SNTClientModeMonitor || cm == SNTClientModeLockdown) {
+    return cm;
+  }
+
+  return SNTClientModeMonitor;
 }
 
-- (void)setClientMode:(SNTClientMode)newMode {
+- (void)setSyncServerClientMode:(SNTClientMode)newMode {
   if (newMode == SNTClientModeMonitor || newMode == SNTClientModeLockdown) {
-    self.configData[kClientModeKey] = @(newMode);
-    [self saveConfigToDisk];
+    [self updateSyncStateForKey:kClientModeKey value:@(newMode)];
   } else {
     LOGW(@"Ignoring request to change client mode to %ld", newMode);
   }
 }
 
-- (NSRegularExpression *)whitelistPathRegex {
-  if (!self.cachedWhitelistDirRegex && self.configData[kWhitelistRegexKey]) {
-    NSString *re = self.configData[kWhitelistRegexKey];
-    if (![re hasPrefix:@"^"]) re = [@"^" stringByAppendingString:re];
-    self.cachedWhitelistDirRegex = [NSRegularExpression regularExpressionWithPattern:re
-                                                                             options:0
-                                                                               error:NULL];
+- (BOOL)enableTransitiveWhitelisting {
+  NSNumber *n = self.syncState[kEnableTransitiveWhitelistingKey];
+  if (n) {
+    return [n boolValue];
   }
-  return self.cachedWhitelistDirRegex;
+  return [self.configState[kEnableTransitiveWhitelistingKey] boolValue];
 }
 
-- (void)setWhitelistPathRegex:(NSRegularExpression *)re {
-  if (!re) {
-    [self.configData removeObjectForKey:kWhitelistRegexKey];
-  } else {
-    self.configData[kWhitelistRegexKey] = [re pattern];
-  }
-  self.cachedWhitelistDirRegex = nil;
-  [self saveConfigToDisk];
+- (void)setEnableTransitiveWhitelisting:(BOOL)enabled {
+  [self updateSyncStateForKey:kEnableTransitiveWhitelistingKey value:@(enabled)];
+}
+
+- (NSRegularExpression *)whitelistPathRegex {
+  return self.syncState[kWhitelistRegexKey] ?: self.configState[kWhitelistRegexKey];
+}
+
+- (void)setSyncServerWhitelistPathRegex:(NSRegularExpression *)re {
+  [self updateSyncStateForKey:kWhitelistRegexKey value:re];
 }
 
 - (NSRegularExpression *)blacklistPathRegex {
-  if (!self.cachedBlacklistDirRegex && self.configData[kBlacklistRegexKey]) {
-    NSString *re = self.configData[kBlacklistRegexKey];
-    if (![re hasPrefix:@"^"]) re = [@"^" stringByAppendingString:re];
-    self.cachedBlacklistDirRegex = [NSRegularExpression regularExpressionWithPattern:re
-                                                                             options:0
-                                                                               error:NULL];
-  }
-  return self.cachedBlacklistDirRegex;
+  return self.syncState[kBlacklistRegexKey] ?: self.configState[kBlacklistRegexKey];
 }
 
-- (void)setBlacklistPathRegex:(NSRegularExpression *)re {
-  if (!re) {
-    [self.configData removeObjectForKey:kBlacklistRegexKey];
-  } else {
-    self.configData[kBlacklistRegexKey] = [re pattern];
-  }
-  self.cachedBlacklistDirRegex = nil;
-  [self saveConfigToDisk];
+- (void)setSyncServerBlacklistPathRegex:(NSRegularExpression *)re {
+  [self updateSyncStateForKey:kBlacklistRegexKey value:re];
 }
 
 - (NSRegularExpression *)fileChangesRegex {
-  if (!self.cachedFileChangesRegex && self.configData[kFileChangesRegexKey]) {
-    NSString *re = self.configData[kFileChangesRegexKey];
-    if (![re hasPrefix:@"^"]) re = [@"^" stringByAppendingString:re];
-    self.cachedFileChangesRegex = [NSRegularExpression regularExpressionWithPattern:re
-                                                                            options:0
-                                                                              error:NULL];
+  return self.configState[kFileChangesRegexKey];
+}
+
+- (NSArray *)fileChangesPrefixFilters {
+  NSArray *filters = self.configState[kFileChangesPrefixFiltersKey];
+  for (id filter in filters) {
+    if (![filter isKindOfClass:[NSString class]]) {
+      LOGE(@"Ignoring FileChangesPrefixFilters: array contains a non-string %@", filter);
+      return nil;
+    }
   }
-  return self.cachedFileChangesRegex;
-}
-
-- (void)setFileChangesRegex:(NSRegularExpression *)re {
-  if (!re) {
-    [self.configData removeObjectForKey:kFileChangesRegexKey];
-  } else {
-    self.configData[kFileChangesRegexKey] = [re pattern];
-  }
-  self.cachedFileChangesRegex = nil;
-  [self saveConfigToDisk];
-}
-
-- (BOOL)enablePageZeroProtection {
-  NSNumber *keyValue = self.configData[kEnablePageZeroProtectionKey];
-  return keyValue ? [keyValue boolValue] : YES;
-}
-
-- (NSURL *)moreInfoURL {
-  return [NSURL URLWithString:self.configData[kMoreInfoURLKey]];
-}
-
-- (NSString *)eventDetailURL {
-  return self.configData[kEventDetailURLKey];
-}
-
-- (NSString *)eventDetailBundleURL {
-  return self.configData[kEventDetailBundleURLKey];
-}
-
-- (NSString *)eventDetailText {
-  return self.configData[kEventDetailTextKey];
-}
-
-- (NSString *)unknownBlockMessage {
-  return self.configData[kUnknownBlockMessage];
-}
-
-- (NSString *)bannedBlockMessage {
-  return self.configData[kBannedBlockMessage];
-}
-
-- (NSString *)modeNotificationMonitor {
-  return self.configData[kModeNotificationMonitor];
-}
-
-- (NSString *)modeNotificationLockdown {
-  return self.configData[kModeNotificationLockdown];
+  return filters;
 }
 
 - (NSURL *)syncBaseURL {
-  NSString *urlStr = self.configData[kSyncBaseURLKey];
-  if (urlStr) {
-    NSURL *url = [NSURL URLWithString:urlStr];
-    if (!url) LOGW(@"SyncBaseURL is not a valid URL!");
-    return url;
-  }
-  return nil;
+  NSString *urlString = self.configState[kSyncBaseURLKey];
+  if (![urlString hasSuffix:@"/"]) urlString = [urlString stringByAppendingString:@"/"];
+  NSURL *url = [NSURL URLWithString:urlString];
+  if (urlString && !url) LOGW(@"SyncBaseURL is not a valid URL!");
+  return url;
+}
+
+- (BOOL)enablePageZeroProtection {
+  NSNumber *number = self.configState[kEnablePageZeroProtectionKey];
+  return number ? [number boolValue] : YES;
+}
+
+- (BOOL)enableBadSignatureProtection {
+  NSNumber *number = self.configState[kEnableBadSignatureProtectionKey];
+  return number ? [number boolValue] : NO;
+}
+
+- (NSURL *)moreInfoURL {
+  return [NSURL URLWithString:self.configState[kMoreInfoURLKey]];
+}
+
+- (NSString *)eventDetailURL {
+  return self.configState[kEventDetailURLKey];
+}
+
+- (NSString *)eventDetailText {
+  return self.configState[kEventDetailTextKey];
+}
+
+- (NSString *)unknownBlockMessage {
+  return self.configState[kUnknownBlockMessage];
+}
+
+- (NSString *)bannedBlockMessage {
+  return self.configState[kBannedBlockMessage];
+}
+
+- (NSString *)modeNotificationMonitor {
+  return self.configState[kModeNotificationMonitor];
+}
+
+- (NSString *)modeNotificationLockdown {
+  return self.configState[kModeNotificationLockdown];
 }
 
 - (NSString *)syncClientAuthCertificateFile {
-  return self.configData[kClientAuthCertificateFileKey];
+  return self.configState[kClientAuthCertificateFileKey];
 }
 
 - (NSString *)syncClientAuthCertificatePassword {
-  return self.configData[kClientAuthCertificatePasswordKey];
+  return self.configState[kClientAuthCertificatePasswordKey];
 }
 
 - (NSString *)syncClientAuthCertificateCn {
-  return self.configData[kClientAuthCertificateCNKey];
+  return self.configState[kClientAuthCertificateCNKey];
 }
 
 - (NSString *)syncClientAuthCertificateIssuer {
-  return self.configData[kClientAuthCertificateIssuerKey];
+  return self.configState[kClientAuthCertificateIssuerKey];
 }
 
 - (NSData *)syncServerAuthRootsData {
-  return self.configData[kServerAuthRootsDataKey];
+  return self.configState[kServerAuthRootsDataKey];
 }
 
 - (NSString *)syncServerAuthRootsFile {
-  return self.configData[kServerAuthRootsFileKey];
+  return self.configState[kServerAuthRootsFileKey];
 }
 
-- (NSDate *)syncLastSuccess {
-  return self.configData[kSyncLastSuccess];
+- (NSDate *)fullSyncLastSuccess {
+  return self.syncState[kFullSyncLastSuccess];
 }
 
-- (void)setSyncLastSuccess:(NSDate *)syncLastSuccess {
-  self.configData[kSyncLastSuccess] = syncLastSuccess;
-  [self saveConfigToDisk];
+- (void)setFullSyncLastSuccess:(NSDate *)fullSyncLastSuccess {
+  [self updateSyncStateForKey:kFullSyncLastSuccess value:fullSyncLastSuccess];
+  self.ruleSyncLastSuccess = fullSyncLastSuccess;
+}
+
+- (NSDate *)ruleSyncLastSuccess {
+  return self.syncState[kRuleSyncLastSuccess];
+}
+
+- (void)setRuleSyncLastSuccess:(NSDate *)ruleSyncLastSuccess {
+  [self updateSyncStateForKey:kRuleSyncLastSuccess value:ruleSyncLastSuccess];
 }
 
 - (BOOL)syncCleanRequired {
-  return [self.configData[kSyncCleanRequired] boolValue];
+  return [self.syncState[kSyncCleanRequired] boolValue];
 }
 
 - (void)setSyncCleanRequired:(BOOL)syncCleanRequired {
-  self.configData[kSyncCleanRequired] = @(syncCleanRequired);
-  [self saveConfigToDisk];
+  [self updateSyncStateForKey:kSyncCleanRequired value:@(syncCleanRequired)];
 }
 
 - (NSString *)machineOwner {
-  NSString *machineOwner;
+  NSString *machineOwner = self.configState[kMachineOwnerKey];
+  if (machineOwner) return machineOwner;
 
-  if (self.configData[kMachineOwnerPlistFileKey] && self.configData[kMachineOwnerPlistKeyKey]) {
-    NSDictionary *plist =
-        [NSDictionary dictionaryWithContentsOfFile:self.configData[kMachineOwnerPlistFileKey]];
-    machineOwner = plist[self.configData[kMachineOwnerPlistKeyKey]];
+  NSString *plistPath = self.configState[kMachineOwnerPlistFileKey];
+  NSString *plistKey = self.configState[kMachineOwnerPlistKeyKey];
+  if (plistPath && plistKey) {
+    NSDictionary *plist = [NSDictionary dictionaryWithContentsOfFile:plistPath];
+    machineOwner = [plist[plistKey] isKindOfClass:[NSString class]] ? plist[plistKey] : nil;
   }
 
-  if (self.configData[kMachineOwnerKey]) {
-    machineOwner = self.configData[kMachineOwnerKey];
-  }
-
-  if (!machineOwner) machineOwner = @"";
-
-  return machineOwner;
+  return machineOwner ?: @"";
 }
 
 - (NSString *)machineID {
-  NSString *machineId;
+  NSString *machineId = self.configState[kMachineIDKey];
+  if (machineId) return machineId;
 
-  if (self.configData[kMachineIDPlistFileKey] && self.configData[kMachineIDPlistKeyKey]) {
-    NSDictionary *plist =
-        [NSDictionary dictionaryWithContentsOfFile:self.configData[kMachineIDPlistFileKey]];
-    machineId = plist[self.configData[kMachineIDPlistKeyKey]];
+  NSString *plistPath = self.configState[kMachineIDPlistFileKey];
+  NSString *plistKey = self.configState[kMachineIDPlistKeyKey];
+
+  if (plistPath && plistKey) {
+    NSDictionary *plist = [NSDictionary dictionaryWithContentsOfFile:plistPath];
+    machineId = [plist[plistKey] isKindOfClass:[NSString class]] ? plist[plistKey] : nil;
   }
 
-  if (self.configData[kMachineIDKey]) {
-    machineId = self.configData[kMachineIDKey];
-  }
-
-  if ([machineId length] == 0) {
-    machineId = [SNTSystemInfo hardwareUUID];
-  }
-
-  return machineId;
+  return machineId.length ? machineId : [SNTSystemInfo hardwareUUID];
 }
 
-- (void)reloadConfigData {
-  NSFileManager *fm = [NSFileManager defaultManager];
-  if (![fm fileExistsAtPath:self.configFilePath]) return;
+- (SNTEventLogType)eventLogType {
+  NSString *s = [self.configState[kEventLogType] lowercaseString];
+  return [s isEqualToString:@"syslog"] ? SNTEventLogTypeSyslog : SNTEventLogTypeFilelog;
+}
 
-  NSError *error;
-  NSData *readData = [NSData dataWithContentsOfFile:self.configFilePath
-                                            options:NSDataReadingMappedIfSafe
-                                              error:&error];
-  if (error) {
-    LOGE(@"Could not read configuration file: %@, replacing.", [error localizedDescription]);
-    [self saveConfigToDisk];
-    return;
-  }
+- (NSString *)eventLogPath {
+  return self.configState[kEventLogPath] ?: @"/var/db/santa/santa.log";
+}
 
-  NSMutableDictionary *configData =
-      [NSPropertyListSerialization propertyListWithData:readData
-                                                options:NSPropertyListMutableContainers
-                                                 format:NULL
-                                                  error:&error];
-  if (error) {
-    LOGE(@"Could not parse configuration file: %@, replacing.", [error localizedDescription]);
-    [self saveConfigToDisk];
-    return;
-  }
+- (BOOL)enableMachineIDDecoration {
+  NSNumber *number = self.configState[kEnableMachineIDDecoration];
+  return number ? [number boolValue] : NO;
+}
 
-  if (self.syncBaseURL) {
-    // Ensure no-one is trying to change protected keys behind our back.
-    BOOL changed = NO;
-    if (geteuid() == 0) {
-      for (NSString *key in self.protectedKeys) {
-        if (((self.configData[key] && !configData[key]) ||
-             (!self.configData[key] && configData[key]) ||
-             (self.configData[key] && ![self.configData[key] isEqual:configData[key]]))) {
-          if (self.configData[key]) {
-            configData[key] = self.configData[key];
-          } else {
-            [configData removeObjectForKey:key];
-          }
-          changed = YES;
-          LOGI(@"Ignoring changed configuration key: %@", key);
-        }
-      }
-    }
-    self.configData = configData;
-    if (changed) [self saveConfigToDisk];
+- (BOOL)enableSystemExtension {
+  if (@available(macOS 10.15, *)) {
+    NSFileManager *fm = [NSFileManager defaultManager];
+    if (![fm fileExistsAtPath:@"/Library/Extensions/santa-driver.kext"]) return YES;
+    NSNumber *number = self.configState[kEnableSystemExtension];
+    return number ? [number boolValue] : YES;
   } else {
-    self.configData = configData;
+    return NO;
   }
 }
 
 #pragma mark Private
 
 ///
-///  Saves the current @c self.configData to disk.
+///  Update the syncState. Triggers a KVO event for all dependents.
 ///
-- (void)saveConfigToDisk {
+- (void)updateSyncStateForKey:(NSString *)key value:(id)value {
+  dispatch_async(dispatch_get_main_queue(), ^{
+    NSMutableDictionary *syncState = self.syncState.mutableCopy;
+    syncState[key] = value;
+    self.syncState = syncState;
+    [self saveSyncStateToDisk];
+  });
+}
+
+///
+///  Read the saved syncState.
+///
+- (NSMutableDictionary *)readSyncStateFromDisk {
+  // Only read the sync state if a sync server is configured.
+  if (!self.syncBaseURL) return nil;
+  // Only santad should read this file.
+  if (geteuid() != 0) return nil;
+  NSMutableDictionary *syncState =
+      [NSMutableDictionary dictionaryWithContentsOfFile:kSyncStateFilePath];
+  for (NSString *key in syncState.allKeys) {
+    if (self.syncServerKeyTypes[key] == [NSRegularExpression class]) {
+      NSString *pattern = [syncState[key] isKindOfClass:[NSString class]] ? syncState[key] : nil;
+      syncState[key] = [self expressionForPattern:pattern];
+    } else if (![syncState[key] isKindOfClass:self.syncServerKeyTypes[key]]) {
+      syncState[key] = nil;
+      continue;
+    }
+  }
+  return syncState;
+}
+
+///
+///  Saves the current effective syncState to disk.
+///
+- (void)saveSyncStateToDisk {
+  // Only save the sync state if a sync server is configured.
+  if (!self.syncBaseURL) return;
+  // Only santad should write to this file.
   if (geteuid() != 0) return;
-  [self.configData writeToFile:self.configFilePath atomically:YES];
+  // Either remove
+  NSMutableDictionary *syncState = self.syncState.mutableCopy;
+  syncState[kWhitelistRegexKey] = [syncState[kWhitelistRegexKey] pattern];
+  syncState[kBlacklistRegexKey] = [syncState[kBlacklistRegexKey] pattern];
+  [syncState writeToFile:kSyncStateFilePath atomically:YES];
+  [[NSFileManager defaultManager] setAttributes:@{ NSFilePosixPermissions : @0644 }
+                                   ofItemAtPath:kSyncStateFilePath error:NULL];
+}
+
+- (void)clearSyncState {
+  self.syncState = [NSMutableDictionary dictionary];
+}
+
+#pragma mark Private Defaults Methods
+
+- (NSRegularExpression *)expressionForPattern:(NSString *)pattern {
+  if (!pattern) return nil;
+  if (![pattern hasPrefix:@"^"]) pattern = [@"^" stringByAppendingString:pattern];
+  return [NSRegularExpression regularExpressionWithPattern:pattern options:0 error:NULL];
+}
+
+- (NSMutableDictionary *)readForcedConfig {
+  NSMutableDictionary *forcedConfig = [NSMutableDictionary dictionary];
+  for (NSString *key in self.forcedConfigKeyTypes) {
+    id obj = [self forcedConfigValueForKey:key];
+    forcedConfig[key] = [obj isKindOfClass:self.forcedConfigKeyTypes[key]] ? obj : nil;
+    // Create the regex objects now
+    if (self.forcedConfigKeyTypes[key] == [NSRegularExpression class]) {
+      NSString *pattern = [obj isKindOfClass:[NSString class]] ? obj : nil;
+      forcedConfig[key] = [self expressionForPattern:pattern];
+    }
+  }
+  return forcedConfig;
+}
+
+- (id)forcedConfigValueForKey:(NSString *)key {
+  id obj = [self.defaults objectForKey:key];
+  return [self.defaults objectIsForcedForKey:key inDomain:kMobileConfigDomain] ? obj : nil;
+}
+
+- (void)startWatchingDefaults {
+  // Only santad should listen.
+  if (geteuid() != 0) return;
+  [[NSNotificationCenter defaultCenter] addObserver:self
+                                           selector:@selector(defaultsChanged:)
+                                               name:NSUserDefaultsDidChangeNotification
+                                             object:nil];
+}
+
+- (void)defaultsChanged:(void *)v {
+  SEL handleChange = @selector(handleChange);
+  [NSObject cancelPreviousPerformRequestsWithTarget:self selector:handleChange object:nil];
+  [self performSelector:handleChange withObject:nil afterDelay:5.0f];
+}
+
+///
+///  Update the configState. Triggers a KVO event for all dependents.
+///
+- (void)handleChange {
+  self.configState = [self readForcedConfig];
 }
 
 @end

Source/common/SNTDropRootPrivs.h

@@ -12,6 +12,8 @@
 ///    See the License for the specific language governing permissions and
 ///    limitations under the License.
 
+#import <Foundation/Foundation.h>
+
 ///
 ///  Simple function to check and drop root privileges.
 ///

Source/common/SNTDropRootPrivs.m

@@ -12,7 +12,7 @@
 ///    See the License for the specific language governing permissions and
 ///    limitations under the License.
 
-#import "SNTDropRootPrivs.h"
+#import "Source/common/SNTDropRootPrivs.h"
 
 BOOL DropRootPrivileges() {
   if (getuid() == 0 || geteuid() == 0 || getgid() == 0 || getegid() == 0) {

Source/common/SNTFileInfo.h

@@ -12,6 +12,10 @@
 ///    See the License for the specific language governing permissions and
 ///    limitations under the License.
 
+#import <Foundation/Foundation.h>
+
+@class MOLCodesignChecker;
+
 ///
 ///  Represents a binary on disk, providing access to details about that binary
 ///  such as the SHA-1, SHA-256, Info.plist and the Mach-O data.
@@ -36,6 +40,18 @@
 ///
 - (instancetype)initWithPath:(NSString *)path;
 
+
+///
+///  Initializer for already resolved paths.
+///
+///  @param path The path of the file this instance is to represent. The path will
+///      not be converted and will be used as is. If the path is not a regular file this method will
+///      return nil and fill in an error.
+///  @param error If an error occurred and nil is returned, this will be a pointer to an NSError
+///      describing the problem.
+///
+- (instancetype)initWithResolvedPath:(NSString *)path error:(NSError **)error;
+
 ///
 ///  @return Path of this file.
 ///
@@ -84,6 +100,11 @@
 ///
 - (BOOL)isDylib;
 
+///
+///  @return YES if this file is a bundle executable (QuickLook/Spotlight plugin, etc.)
+///
+- (BOOL)isBundle;
+
 ///
 ///  @return YES if this file is a kernel extension.
 ///
@@ -104,11 +125,31 @@
 ///
 - (BOOL)isDMG;
 
+///
+///  @return NSString describing the kind of file (executable, bundle, script, etc.)
+///
+- (NSString *)humanReadableFileType;
+
 ///
 ///  @return YES if this file has a bad/missing __PAGEZERO .
 ///
 - (BOOL)isMissingPageZero;
 
+///
+///  If set to YES, the bundle* and infoPlist methods will search for and use the highest NSBundle
+///  found in the tree. Defaults to NO, which uses the first found bundle, if any.
+///
+///  @example:
+///      An SNTFileInfo object that represents
+///        /Applications/Photos.app/Contents/XPCServices/com.apple.Photos.librarychooserservice.xpc
+///      useAncestorBundle is set to YES
+///        /Applications/Photos.app will be used to get data backing all the bundle methods
+///
+///  @note: The NSBundle object backing the bundle* and infoPlist methods is cached once found.
+///         Setting the useAncestorBundle propery will clear this cache and force a re-search.
+///
+@property(nonatomic) BOOL useAncestorBundle;
+
 ///
 ///  @return An NSBundle if this file is part of a bundle.
 ///
@@ -171,4 +212,16 @@
 ///
 - (NSUInteger)fileSize;
 
+///
+///  @return The underlying file handle.
+///
+@property(readonly) NSFileHandle *fileHandle;
+
+///
+///  @return Returns an instance of MOLCodeSignChecker initialized with the file's binary path.
+///  Both the MOLCodesignChecker and any resulting NSError are cached and returned on subsequent
+///  calls.  You may pass in NULL for the error if you don't care to receive it.
+///
+- (MOLCodesignChecker *)codesignCheckerWithError:(NSError **)error;
+
 @end

Source/common/SNTFileInfo.m

@@ -12,17 +12,19 @@
 ///    See the License for the specific language governing permissions and
 ///    limitations under the License.
 
-#import "SNTFileInfo.h"
+#import "Source/common/SNTFileInfo.h"
 
 #import <CommonCrypto/CommonDigest.h>
+#import <fmdb/FMDB.h>
+#import <MOLCodesignChecker/MOLCodesignChecker.h>
 
+#include <mach-o/arch.h>
 #include <mach-o/loader.h>
 #include <mach-o/swap.h>
 #include <pwd.h>
 #include <sys/stat.h>
 #include <sys/xattr.h>
 
-#import <FMDB/FMDB.h>
 
 // Simple class to hold the data of a mach_header and the offset within the file
 // in which that header was found.
@@ -53,29 +55,51 @@
 @property NSDictionary *infoDict;
 @property NSDictionary *quarantineDict;
 @property NSDictionary *cachedHeaders;
+@property MOLCodesignChecker *cachedCodesignChecker;
+@property(nonatomic) NSError *codesignCheckerError;
 @end
 
 @implementation SNTFileInfo
 
 extern NSString *const NSURLQuarantinePropertiesKey WEAK_IMPORT_ATTRIBUTE;
 
-- (instancetype)initWithPath:(NSString *)path error:(NSError **)error {
+- (instancetype)initWithResolvedPath:(NSString *)path error:(NSError **)error {
   self = [super init];
   if (self) {
-    NSBundle *bndl;
-    _path = [self resolvePath:path bundle:&bndl];
-    _bundleRef = bndl;
-    if (_path.length == 0) {
+    _path = path;
+    if (!_path.length) {
       if (error) {
-        NSString *errStr = @"Unable to resolve empty path";
-        if (path) errStr = [@"Unable to resolve path: " stringByAppendingString:path];
+        NSString *errStr = @"Unable to use empty path";
         *error = [NSError errorWithDomain:@"com.google.santa.fileinfo"
-                                     code:260
+                                     code:270
                                  userInfo:@{NSLocalizedDescriptionKey : errStr}];
       }
       return nil;
     }
 
+    struct stat fileStat;
+    lstat(_path.UTF8String, &fileStat);
+    if (!((S_IFMT & fileStat.st_mode) == S_IFREG)) {
+      if (error) {
+        NSString *errStr = [NSString stringWithFormat:@"Non regular file: %s", strerror(errno)];
+        *error = [NSError errorWithDomain:@"com.google.santa.fileinfo"
+                                     code:290
+                                 userInfo:@{NSLocalizedDescriptionKey : errStr}];
+      }
+      return nil;
+    }
+
+    _fileSize = fileStat.st_size;
+
+    if (_fileSize == 0) return nil;
+
+    if (fileStat.st_uid != 0) {
+      struct passwd *pwd = getpwuid(fileStat.st_uid);
+      if (pwd) {
+        _fileOwnerHomeDir = @(pwd->pw_dir);
+      }
+    }
+
     int fd = open([_path UTF8String], O_RDONLY | O_CLOEXEC);
     if (fd < 0) {
       if (error) {
@@ -87,24 +111,29 @@ extern NSString *const NSURLQuarantinePropertiesKey WEAK_IMPORT_ATTRIBUTE;
       return nil;
     }
     _fileHandle = [[NSFileHandle alloc] initWithFileDescriptor:fd closeOnDealloc:YES];
-
-    struct stat fileStat;
-    fstat(_fileHandle.fileDescriptor, &fileStat);
-    _fileSize = fileStat.st_size;
-
-    if (_fileSize == 0) return nil;
-
-    if (fileStat.st_uid != 0) {
-      struct passwd *pwd = getpwuid(fileStat.st_uid);
-      if (pwd) {
-        _fileOwnerHomeDir = @(pwd->pw_dir);
-      }
-    }
   }
 
   return self;
 }
 
+- (instancetype)initWithPath:(NSString *)path error:(NSError **)error {
+  NSBundle *bndl;
+  NSString *resolvedPath = [self resolvePath:path bundle:&bndl];
+  if (!resolvedPath.length) {
+    if (error) {
+      NSString *errStr = @"Unable to resolve empty path";
+      if (path) errStr = [@"Unable to resolve path: " stringByAppendingString:path];
+      *error = [NSError errorWithDomain:@"com.google.santa.fileinfo"
+                                   code:260
+                               userInfo:@{NSLocalizedDescriptionKey : errStr}];
+    }
+    return nil;
+  }
+  self = [self initWithResolvedPath:resolvedPath error:error];
+  if (self && bndl) _bundleRef = bndl;
+  return self;
+}
+
 - (instancetype)initWithPath:(NSString *)path {
   return [self initWithPath:path error:NULL];
 }
@@ -114,67 +143,71 @@ extern NSString *const NSURLQuarantinePropertiesKey WEAK_IMPORT_ATTRIBUTE;
 - (void)hashSHA1:(NSString **)sha1 SHA256:(NSString **)sha256 {
   const int MAX_CHUNK_SIZE = 256 * 1024;  // 256 KB
   const size_t chunkSize = _fileSize > MAX_CHUNK_SIZE ? MAX_CHUNK_SIZE : _fileSize;
-  char chunk[chunkSize];
+  char *chunk = malloc(chunkSize);
 
-  CC_SHA1_CTX c1;
-  CC_SHA256_CTX c256;
+  @try {
+    CC_SHA1_CTX c1;
+    CC_SHA256_CTX c256;
 
-  if (sha1) CC_SHA1_Init(&c1);
-  if (sha256) CC_SHA256_Init(&c256);
+    if (sha1) CC_SHA1_Init(&c1);
+    if (sha256) CC_SHA256_Init(&c256);
 
-  int fd = self.fileHandle.fileDescriptor;
+    int fd = self.fileHandle.fileDescriptor;
 
-  fcntl(fd, F_RDAHEAD, 1);
-  struct radvisory radv;
-  radv.ra_offset = 0;
-  const int MAX_ADVISORY_READ = 10 * 1024 * 1024;
-  radv.ra_count = (int)_fileSize < MAX_ADVISORY_READ ? (int)_fileSize : MAX_ADVISORY_READ;
-  fcntl(fd, F_RDADVISE, &radv);
-  ssize_t bytesRead;
+    fcntl(fd, F_RDAHEAD, 1);
+    struct radvisory radv;
+    radv.ra_offset = 0;
+    const int MAX_ADVISORY_READ = 10 * 1024 * 1024;
+    radv.ra_count = (int)_fileSize < MAX_ADVISORY_READ ? (int)_fileSize : MAX_ADVISORY_READ;
+    fcntl(fd, F_RDADVISE, &radv);
+    ssize_t bytesRead;
 
-  for (uint64_t offset = 0; offset < _fileSize;) {
-    bytesRead = pread(fd, chunk, chunkSize, offset);
-    if (bytesRead > 0) {
-      if (sha1) CC_SHA1_Update(&c1, chunk, (CC_LONG)bytesRead);
-      if (sha256) CC_SHA256_Update(&c256, chunk, (CC_LONG)bytesRead);
-      offset += bytesRead;
-    } else if (bytesRead == -1 && errno == EINTR) {
-      continue;
-    } else {
-      return;
+    for (uint64_t offset = 0; offset < _fileSize;) {
+      bytesRead = pread(fd, chunk, chunkSize, offset);
+      if (bytesRead > 0) {
+        if (sha1) CC_SHA1_Update(&c1, chunk, (CC_LONG)bytesRead);
+        if (sha256) CC_SHA256_Update(&c256, chunk, (CC_LONG)bytesRead);
+        offset += bytesRead;
+      } else if (bytesRead == -1 && errno == EINTR) {
+        continue;
+      } else {
+        return;
+      }
     }
-  }
 
-  // We turn off Read Ahead that we turned on
-  fcntl(fd, F_RDAHEAD, 0);
-  if (sha1) {
-    unsigned char digest[CC_SHA1_DIGEST_LENGTH];
-    CC_SHA1_Final(digest, &c1);
-    NSString *const SHA1FormatString =
-        @"%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x";
-    *sha1 = [[NSString alloc]
-        initWithFormat:SHA1FormatString, digest[0], digest[1], digest[2],
-                       digest[3], digest[4], digest[5], digest[6], digest[7],
-                       digest[8], digest[9], digest[10], digest[11], digest[12],
-                       digest[13], digest[14], digest[15], digest[16],
-                       digest[17], digest[18], digest[19]];
-  }
-  if (sha256) {
-    unsigned char digest[CC_SHA256_DIGEST_LENGTH];
-    CC_SHA256_Final(digest, &c256);
-    NSString *const SHA256FormatString =
-        @"%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x"
-         "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x";
+    // We turn off Read Ahead that we turned on
+    fcntl(fd, F_RDAHEAD, 0);
+    if (sha1) {
+      unsigned char digest[CC_SHA1_DIGEST_LENGTH];
+      CC_SHA1_Final(digest, &c1);
+      NSString *const SHA1FormatString =
+          @"%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x";
+      *sha1 = [[NSString alloc]
+          initWithFormat:SHA1FormatString, digest[0], digest[1], digest[2],
+                         digest[3], digest[4], digest[5], digest[6], digest[7],
+                         digest[8], digest[9], digest[10], digest[11], digest[12],
+                         digest[13], digest[14], digest[15], digest[16],
+                         digest[17], digest[18], digest[19]];
+    }
+    if (sha256) {
+      unsigned char digest[CC_SHA256_DIGEST_LENGTH];
+      CC_SHA256_Final(digest, &c256);
+      NSString *const SHA256FormatString =
+          @"%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x"
+           "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x";
 
-    *sha256 = [[NSString alloc]
-        initWithFormat:SHA256FormatString, digest[0], digest[1], digest[2],
-                       digest[3], digest[4], digest[5], digest[6], digest[7],
-                       digest[8], digest[9], digest[10], digest[11], digest[12],
-                       digest[13], digest[14], digest[15], digest[16],
-                       digest[17], digest[18], digest[19], digest[20],
-                       digest[21], digest[22], digest[23], digest[24],
-                       digest[25], digest[26], digest[27], digest[28],
-                       digest[29], digest[30], digest[31]];
+      *sha256 = [[NSString alloc]
+          initWithFormat:SHA256FormatString, digest[0], digest[1], digest[2],
+                         digest[3], digest[4], digest[5], digest[6], digest[7],
+                         digest[8], digest[9], digest[10], digest[11], digest[12],
+                         digest[13], digest[14], digest[15], digest[16],
+                         digest[17], digest[18], digest[19], digest[20],
+                         digest[21], digest[22], digest[23], digest[24],
+                         digest[25], digest[26], digest[27], digest[28],
+                         digest[29], digest[30], digest[31]];
+    }
+  } @finally {
+    free(chunk);
   }
 }
 
@@ -196,22 +229,26 @@ extern NSString *const NSURLQuarantinePropertiesKey WEAK_IMPORT_ATTRIBUTE;
   return [self.machHeaders allKeys];
 }
 
-- (BOOL)isExecutable {
+- (uint32_t)machFileType {
   struct mach_header *mach_header = [self firstMachHeader];
-  if (mach_header && mach_header->filetype == MH_EXECUTE) return YES;
-  return NO;
+  if (mach_header) return mach_header->filetype;
+  return -1;
+}
+
+- (BOOL)isExecutable {
+  return [self machFileType] == MH_EXECUTE;
 }
 
 - (BOOL)isDylib {
-  struct mach_header *mach_header = [self firstMachHeader];
-  if (mach_header && mach_header->filetype == MH_DYLIB) return YES;
-  return NO;
+  return [self machFileType] == MH_DYLIB;
+}
+
+- (BOOL)isBundle {
+  return [self machFileType] == MH_BUNDLE;
 }
 
 - (BOOL)isKext {
-  struct mach_header *mach_header = [self firstMachHeader];
-  if (mach_header && mach_header->filetype == MH_KEXT_BUNDLE) return YES;
-  return NO;
+  return [self machFileType] == MH_KEXT_BUNDLE;
 }
 
 - (BOOL)isMachO {
@@ -233,17 +270,30 @@ extern NSString *const NSURLQuarantinePropertiesKey WEAK_IMPORT_ATTRIBUTE;
 }
 
 - (BOOL)isDMG {
+  if (self.fileSize < 512) return NO;
   NSUInteger last512 = self.fileSize - 512;
   const char *magic = (const char *)[[self safeSubdataWithRange:NSMakeRange(last512, 4)] bytes];
   return (magic && memcmp("koly", magic, 4) == 0);
 }
 
+- (NSString *)humanReadableFileType {
+  if ([self isExecutable]) return @"Executable";
+  if ([self isDylib]) return @"Dynamic Library";
+  if ([self isBundle]) return @"Bundle/Plugin";
+  if ([self isKext]) return @"Kernel Extension";
+  if ([self isScript]) return @"Script";
+  if ([self isXARArchive]) return @"XAR Archive";
+  if ([self isDMG]) return @"Disk Image";
+  return @"Unknown";
+}
+
 #pragma mark Page Zero
 
 - (BOOL)isMissingPageZero {
   // This method only checks i386 arch because the kernel enforces this for other archs
   // See bsd/kern/mach_loader.c, search for enforce_hard_pagezero.
-  MachHeaderWithOffset *x86Header = self.machHeaders[[self nameForCPUType:CPU_TYPE_X86]];
+  MachHeaderWithOffset *x86Header = self.machHeaders[[self nameForCPUType:CPU_TYPE_X86
+                                                               cpuSubType:CPU_SUBTYPE_I386_ALL]];
   if (!x86Header) return NO;
 
   struct mach_header *mh = (struct mach_header *)[x86Header.data bytes];
@@ -271,39 +321,62 @@ extern NSString *const NSURLQuarantinePropertiesKey WEAK_IMPORT_ATTRIBUTE;
 
 #pragma mark Bundle Information
 
+///
+///  Directories with a "Contents/Info.plist" entry can be mistaken as a bundle. To be considered an
+///  ancestor, the bundle must have a valid extension.
+///
+- (NSSet *)allowedAncestorExtensions {
+  static NSSet *set;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    set = [NSSet setWithArray:@[
+      @"app",
+      @"bundle",
+      @"framework",
+      @"kext",
+      @"xctest",
+      @"xpc",
+    ]];
+  });
+  return set;
+}
+
 ///
 ///  Try and determine the bundle that the represented executable is contained within, if any.
 ///
 ///  Rationale: An NSBundle has a method executablePath for discovering the main binary within a
 ///  bundle but provides no way to get an NSBundle object when only the executablePath is known.
-///  Also a bundle can contain multiple binaries within the MacOS folder and we want any of these
+///  Also a bundle can contain multiple binaries within its subdirectories and we want any of these
 ///  to count as being part of the bundle.
 ///
-///  This method relies on executable bundles being laid out as follows:
+///  This method walks up the path until a bundle is found, if any.
 ///
-/// @code
-/// Bundle.app/
-///    Contents/
-///       MacOS/
-///         executable
-/// @endcode
-///
-///  If @c self.path is the full path to @c executable above, this method would return an
-///  NSBundle reference for Bundle.app.
+///  @param ancestor YES this will return the highest NSBundle, with a valid extension, found in the
+///                  tree. NO will return the the lowest NSBundle, without validating the extension.
 ///
+- (NSBundle *)findBundleWithAncestor:(BOOL)ancestor {
+  NSBundle *bundle;
+  NSMutableArray *pathComponents = [[self.path pathComponents] mutableCopy];
+
+  // Ignore the root path "/", for some reason this is considered a bundle.
+  while (pathComponents.count > 1) {
+    NSBundle *bndl = [NSBundle bundleWithPath:[NSString pathWithComponents:pathComponents]];
+    if ([bndl objectForInfoDictionaryKey:@"CFBundleIdentifier"]) {
+      if (!ancestor ||
+          [[self allowedAncestorExtensions] containsObject:bndl.bundlePath.pathExtension]) {
+        bundle = bndl;
+      }
+      if (!ancestor) break;
+    }
+    [pathComponents removeLastObject];
+  }
+  return bundle;
+}
+
 - (NSBundle *)bundle {
   if (!self.bundleRef) {
-    self.bundleRef = (NSBundle *)[NSNull null];
-
-    // Check that the full path is at least 4-levels deep:
-    // e.g: /Calendar.app/Contents/MacOS/Calendar
-    NSArray *pathComponents = [self.path pathComponents];
-    NSUInteger pathComponentsCount = pathComponents.count;
-    if (pathComponentsCount < 4) return nil;
-
-    pathComponents = [pathComponents subarrayWithRange:NSMakeRange(0, pathComponentsCount - 3)];
-    NSBundle *bndl = [NSBundle bundleWithPath:[NSString pathWithComponents:pathComponents]];
-    if (bndl && [bndl objectForInfoDictionaryKey:@"CFBundleIdentifier"]) self.bundleRef = bndl;
+    self.bundleRef =
+        [self findBundleWithAncestor:self.useAncestorBundle] ?: (NSBundle *)[NSNull null];
   }
   return self.bundleRef == (NSBundle *)[NSNull null] ? nil : self.bundleRef;
 }
@@ -312,6 +385,14 @@ extern NSString *const NSURLQuarantinePropertiesKey WEAK_IMPORT_ATTRIBUTE;
   return [self.bundle bundlePath];
 }
 
+- (void)setUseAncestorBundle:(BOOL)useAncestorBundle {
+  if (self.useAncestorBundle != useAncestorBundle) {
+    self.bundleRef = nil;
+    self.infoDict = nil;
+  }
+  _useAncestorBundle = useAncestorBundle;
+}
+
 - (NSDictionary *)infoPlist {
   if (!self.infoDict) {
     NSDictionary *d = [self embeddedPlist];
@@ -391,13 +472,13 @@ extern NSString *const NSURLQuarantinePropertiesKey WEAK_IMPORT_ATTRIBUTE;
   if (machHeader) {
     struct mach_header *mh = (struct mach_header *)[machHeader bytes];
     MachHeaderWithOffset *mhwo = [[MachHeaderWithOffset alloc] initWithData:machHeader offset:0];
-    machHeaders[[self nameForCPUType:mh->cputype]] = mhwo;
+    machHeaders[[self nameForCPUType:mh->cputype cpuSubType:mh->cpusubtype]] = mhwo;
   } else {
     NSRange range = NSMakeRange(0, sizeof(struct fat_header));
     NSData *fatHeader = [self safeSubdataWithRange:range];
     struct fat_header *fh = (struct fat_header *)[fatHeader bytes];
 
-    if (fatHeader && (fh->magic == FAT_MAGIC || fh->magic == FAT_CIGAM)) {
+    if (fatHeader && (fh->magic == FAT_CIGAM || fh->magic == FAT_MAGIC)) {
       int nfat_arch = OSSwapBigToHostInt32(fh->nfat_arch);
       range = NSMakeRange(sizeof(struct fat_header), sizeof(struct fat_arch) * nfat_arch);
       NSMutableData *fatArchs = [[self safeSubdataWithRange:range] mutableCopy];
@@ -407,11 +488,12 @@ extern NSString *const NSURLQuarantinePropertiesKey WEAK_IMPORT_ATTRIBUTE;
           int offset = OSSwapBigToHostInt32(fat_arch[i].offset);
           int size = OSSwapBigToHostInt32(fat_arch[i].size);
           int cputype = OSSwapBigToHostInt(fat_arch[i].cputype);
+          int cpusubtype = OSSwapBigToHostInt(fat_arch[i].cpusubtype);
 
           range = NSMakeRange(offset, size);
           NSData *machHeader = [self parseSingleMachHeader:[self safeSubdataWithRange:range]];
           if (machHeader) {
-            NSString *key = [self nameForCPUType:cputype];
+            NSString *key = [self nameForCPUType:cputype cpuSubType:cpusubtype];
             MachHeaderWithOffset *mhwo = [[MachHeaderWithOffset alloc] initWithData:machHeader
                                                                              offset:offset];
             machHeaders[key] = mhwo;
@@ -518,8 +600,7 @@ extern NSString *const NSURLQuarantinePropertiesKey WEAK_IMPORT_ATTRIBUTE;
     NSData *d = [self.fileHandle readDataOfLength:range.length];
     if (d.length != range.length) return nil;
     return d;
-  }
-  @catch (NSException *e) {
+  } @catch (NSException *e) {
     return nil;
   }
 }
@@ -530,7 +611,7 @@ extern NSString *const NSURLQuarantinePropertiesKey WEAK_IMPORT_ATTRIBUTE;
 ///  is not the one who downloaded the file.
 ///
 - (NSDictionary *)quarantineData {
-  if (!self.quarantineDict && self.fileOwnerHomeDir) {
+  if (!self.quarantineDict && self.fileOwnerHomeDir && NSURLQuarantinePropertiesKey) {
     self.quarantineDict = (NSDictionary *)[NSNull null];
 
     NSURL *url = [NSURL fileURLWithPath:self.path];
@@ -596,20 +677,15 @@ extern NSString *const NSURLQuarantinePropertiesKey WEAK_IMPORT_ATTRIBUTE;
 ///
 ///  Return a human-readable string for a cpu_type_t.
 ///
-- (NSString *)nameForCPUType:(cpu_type_t)cpuType {
-  switch (cpuType) {
-    case CPU_TYPE_X86:
-      return @"i386";
-    case CPU_TYPE_X86_64:
-      return @"x86-64";
-    case CPU_TYPE_POWERPC:
-      return @"ppc";
-    case CPU_TYPE_POWERPC64:
-      return @"ppc64";
-    default:
-      return @"unknown";
+- (NSString *)nameForCPUType:(cpu_type_t)cpuType cpuSubType:(cpu_subtype_t)cpuSubType {
+  const NXArchInfo *archInfo = NXGetArchInfoFromCpuType(cpuType, cpuSubType);
+  NSString *arch;
+  if (archInfo && archInfo->name) {
+    arch = @(archInfo->name);
+  } else {
+    arch = [NSString stringWithFormat:@"%i:%i", cpuType, cpuSubType];
   }
-  return nil;
+  return arch;
 }
 
 ///
@@ -634,7 +710,7 @@ extern NSString *const NSURLQuarantinePropertiesKey WEAK_IMPORT_ATTRIBUTE;
   BOOL directory;
   if (![[NSFileManager defaultManager] fileExistsAtPath:path isDirectory:&directory]) {
     return nil;
-  } else if (directory) {
+  } else if (directory && ![path isEqualToString:@"/"]) {
     NSBundle *bndl = [NSBundle bundleWithPath:path];
     if (bundle) *bundle = bndl;
     return [bndl executablePath];
@@ -643,4 +719,18 @@ extern NSString *const NSURLQuarantinePropertiesKey WEAK_IMPORT_ATTRIBUTE;
   }
 }
 
+///
+///  Cache and return a MOLCodeSignChecker for the given file.  If there was an error creating the
+///  code sign checker it will be returned in the passed-in error parameter.
+///
+- (MOLCodesignChecker *)codesignCheckerWithError:(NSError **)error {
+  if (!self.cachedCodesignChecker && !self.codesignCheckerError) {
+    NSError *e;
+    self.cachedCodesignChecker = [[MOLCodesignChecker alloc] initWithBinaryPath:self.path error:&e];
+    self.codesignCheckerError = e;
+  }
+  if (error) *error = self.codesignCheckerError;
+  return self.cachedCodesignChecker;
+}
+
 @end

Source/common/SNTFileInfoTest.m

@@ -14,13 +14,23 @@
 
 #import <XCTest/XCTest.h>
 
-#import "SNTFileInfo.h"
+#import "Source/common/SNTFileInfo.h"
 
 @interface SNTFileInfoTest : XCTestCase
 @end
 
 @implementation SNTFileInfoTest
 
+- (NSString *)directoryBundle {
+  NSString *rp = [[NSBundle bundleForClass:[self class]] resourcePath];
+  return [rp stringByAppendingPathComponent:@"testdata/DirectoryBundle"];
+}
+
+- (NSString *)bundleExample {
+  NSString *rp = [[NSBundle bundleForClass:[self class]] resourcePath];
+  return [rp stringByAppendingPathComponent:@"testdata/BundleExample.app"];
+}
+
 - (void)testPathStandardizing {
   SNTFileInfo *sut = [[SNTFileInfo alloc] initWithPath:@"/Applications/Safari.app"];
   XCTAssertNotNil(sut);
@@ -29,9 +39,9 @@
   sut = [[SNTFileInfo alloc] initWithPath:@"../../../../../../../../../../../../../../../bin/ls"];
   XCTAssertEqualObjects(sut.path, @"/bin/ls");
 
-  sut = [[SNTFileInfo alloc] initWithPath:@"/usr/bin/qlmanage"];
-  XCTAssertEqualObjects(sut.path, @"/System/Library/Frameworks/QuickLook.framework/Versions/A/"
-                                  @"Resources/quicklookd.app/Contents/MacOS/qlmanage");
+  sut = [[SNTFileInfo alloc] initWithPath:@"/usr/sbin/AppleFileServer"];
+  XCTAssertEqualObjects(sut.path, @"/System/Library/CoreServices/AppleFileServer.app/"
+                                  @"Contents/MacOS/AppleFileServer");
 }
 
 - (void)testSHA1 {
@@ -120,16 +130,104 @@
 }
 
 - (void)testBundle {
-  SNTFileInfo *sut =
-      [[SNTFileInfo alloc] initWithPath:@"/Applications/Safari.app/Contents/MacOS/Safari"];
+  NSString *path = [self bundleExample];
+  SNTFileInfo *sut = [[SNTFileInfo alloc] initWithPath:path];
 
   XCTAssertNotNil([sut bundle]);
 
-  XCTAssertEqualObjects([sut bundleIdentifier], @"com.apple.Safari");
-  XCTAssertEqualObjects([sut bundleName], @"Safari");
+  XCTAssertEqualObjects([sut bundleIdentifier], @"com.google.santa.BundleExample");
+  XCTAssertEqualObjects([sut bundleName], @"BundleExample");
+  XCTAssertEqualObjects([sut bundleVersion], @"1");
+  XCTAssertEqualObjects([sut bundleShortVersionString], @"1.0");
+  XCTAssertEqualObjects([sut bundlePath], path);
+}
+
+- (void)testAncestorBundle {
+  NSString *path = [self bundleExample];
+  SNTFileInfo *sut = [[SNTFileInfo alloc] initWithPath:path];
+  sut.useAncestorBundle = YES;
+
+  XCTAssertNotNil([sut bundle]);
+
+  XCTAssertEqualObjects([sut bundleIdentifier], @"com.google.santa.UnitTest.SNTFileInfoTest");
   XCTAssertNotNil([sut bundleVersion]);
   XCTAssertNotNil([sut bundleShortVersionString]);
-  XCTAssertEqualObjects([sut bundlePath], @"/Applications/Safari.app");
+
+  NSString *ancestorBundlePath = path;
+  for (int i = 0; i < 4; i++) {
+    ancestorBundlePath = [ancestorBundlePath stringByDeletingLastPathComponent];
+  }
+  XCTAssertEqualObjects([sut bundlePath], ancestorBundlePath);
+}
+
+- (void)testBundleIsAncestor {
+  NSString *path = [NSBundle bundleForClass:[self class]].bundlePath;
+  SNTFileInfo *sut = [[SNTFileInfo alloc] initWithPath:path];
+  sut.useAncestorBundle = YES;
+
+  XCTAssertNotNil([sut bundle]);
+
+  XCTAssertEqualObjects([sut bundleIdentifier], @"com.google.santa.UnitTest.SNTFileInfoTest");
+  XCTAssertNotNil([sut bundleVersion]);
+  XCTAssertNotNil([sut bundleShortVersionString]);
+  XCTAssertEqualObjects([sut bundlePath], path);
+}
+
+- (void)testDirectoryBundleIsNotAncestor {
+  NSString *path = [self directoryBundle];
+  NSString *directoryBundle = @"/tmp/DirectoryBundle";
+  NSFileManager *fm = [NSFileManager defaultManager];
+  [fm removeItemAtPath:directoryBundle error:NULL];
+  [fm copyItemAtPath:path toPath:directoryBundle error:NULL];
+  path = [directoryBundle stringByAppendingString:@"/Contents/Resources/BundleExample.app"];
+  SNTFileInfo *sut = [[SNTFileInfo alloc] initWithPath:path];
+  sut.useAncestorBundle = YES;
+
+  XCTAssertNotNil([sut bundle]);
+
+  XCTAssertEqualObjects([sut bundleIdentifier], @"com.google.santa.BundleExample");
+  XCTAssertEqualObjects([sut bundleName], @"BundleExample");
+  XCTAssertEqualObjects([sut bundleVersion], @"1");
+  XCTAssertEqualObjects([sut bundleShortVersionString], @"1.0");
+  XCTAssertEqualObjects([sut bundlePath], path);
+}
+
+- (void)testBundleCacheReset {
+  NSString *path = [self bundleExample];
+  SNTFileInfo *sut = [[SNTFileInfo alloc] initWithPath:path];
+
+  XCTAssertNotNil([sut bundle]);
+
+  XCTAssertEqualObjects([sut bundleIdentifier], @"com.google.santa.BundleExample");
+  XCTAssertEqualObjects([sut bundleName], @"BundleExample");
+  XCTAssertEqualObjects([sut bundleVersion], @"1");
+  XCTAssertEqualObjects([sut bundleShortVersionString], @"1.0");
+  XCTAssertEqualObjects([sut bundlePath], path);
+
+  sut.useAncestorBundle = YES;
+
+  XCTAssertNotNil([sut bundle]);
+
+  XCTAssertEqualObjects([sut bundleIdentifier], @"com.google.santa.UnitTest.SNTFileInfoTest");
+  XCTAssertNotNil([sut bundleVersion]);
+  XCTAssertNotNil([sut bundleShortVersionString]);
+
+  NSString *ancestorBundlePath = path;
+  for (int i = 0; i < 4; i++) {
+    ancestorBundlePath = [ancestorBundlePath stringByDeletingLastPathComponent];
+  }
+  XCTAssertEqualObjects([sut bundlePath], ancestorBundlePath);
+}
+
+- (void)testNonBundle {
+  SNTFileInfo *sut =
+  [[SNTFileInfo alloc] initWithPath:@"/usr/bin/yes"];
+
+  XCTAssertNil([sut bundle]);
+
+  sut.useAncestorBundle = YES;
+
+  XCTAssertNil([sut bundle]);
 }
 
 - (void)testEmbeddedInfoPlist {

Source/common/SNTFileWatcher.h

@@ -1,33 +0,0 @@
-/// Copyright 2015 Google Inc. All rights reserved.
-///
-/// Licensed under the Apache License, Version 2.0 (the "License");
-/// you may not use this file except in compliance with the License.
-/// You may obtain a copy of the License at
-///
-///    http://www.apache.org/licenses/LICENSE-2.0
-///
-///    Unless required by applicable law or agreed to in writing, software
-///    distributed under the License is distributed on an "AS IS" BASIS,
-///    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-///    See the License for the specific language governing permissions and
-///    limitations under the License.
-
-///
-///  Simple file watching class using dispatch sources. Will automatically
-///  reload the watch if the file is deleted and continue watching for
-///  events until deallocated.
-///
-@interface SNTFileWatcher : NSObject
-
-///
-///  Designated initializer
-///  Initializes the watcher and begins watching for modifications.
-///
-///  @param filePath the file to watch.
-///  @param handler the handler to call when changes happen. The argument to the block is the
-///      type of change that happened as a bitmask to be compared with DISPATCH_VNODE_* constants.
-///
-- (nonnull instancetype)initWithFilePath:(nonnull NSString *)filePath
-                                 handler:(nonnull void (^)(unsigned long))handler;
-
-@end

Source/common/SNTFileWatcher.m

@@ -1,101 +0,0 @@
-/// Copyright 2015 Google Inc. All rights reserved.
-///
-/// Licensed under the Apache License, Version 2.0 (the "License");
-/// you may not use this file except in compliance with the License.
-/// You may obtain a copy of the License at
-///
-///    http://www.apache.org/licenses/LICENSE-2.0
-///
-///    Unless required by applicable law or agreed to in writing, software
-///    distributed under the License is distributed on an "AS IS" BASIS,
-///    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-///    See the License for the specific language governing permissions and
-///    limitations under the License.
-
-#import "SNTFileWatcher.h"
-
-#import "SNTStrengthify.h"
-
-@interface SNTFileWatcher ()
-@property NSString *filePath;
-@property(strong) void (^handler)(unsigned long);
-
-@property dispatch_source_t source;
-@end
-
-@implementation SNTFileWatcher
-
-- (instancetype)init {
-  [self doesNotRecognizeSelector:_cmd];
-  return nil;
-}
-
-- (instancetype)initWithFilePath:(nonnull NSString *)filePath
-                         handler:(nonnull void (^)(unsigned long))handler {
-  self = [super init];
-  if (self) {
-    _filePath = filePath;
-    _handler = handler;
-    [self startWatchingFile];
-  }
-  return self;
-}
-
-- (void)dealloc {
-  [self stopWatchingFile];
-}
-
-- (void)startWatchingFile {
-  dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_BACKGROUND, 0);
-  int mask = (DISPATCH_VNODE_DELETE | DISPATCH_VNODE_RENAME |
-              DISPATCH_VNODE_WRITE | DISPATCH_VNODE_EXTEND | DISPATCH_VNODE_ATTRIB);
-
-  dispatch_async(queue, ^{
-    int fd = -1;
-    while ((fd = open([self.filePath fileSystemRepresentation], O_EVTONLY | O_CLOEXEC)) < 0) {
-      usleep(200000);  // wait 200ms
-    }
-    self.source = dispatch_source_create(DISPATCH_SOURCE_TYPE_VNODE, fd, mask, queue);
-
-    WEAKIFY(self);
-
-    dispatch_source_set_event_handler(self.source, ^{
-      STRONGIFY(self);
-      unsigned long data = dispatch_source_get_data(self.source);
-      self.handler(data);
-      if (data & DISPATCH_VNODE_DELETE || data & DISPATCH_VNODE_RENAME) {
-        [self stopWatchingFile];
-        [self startWatchingFile];
-      }
-      sleep(2);
-    });
-
-    dispatch_source_set_registration_handler(self.source, ^{
-      STRONGIFY(self);
-      self.handler(0);
-    });
-
-    dispatch_source_set_cancel_handler(self.source, ^{
-      STRONGIFY(self);
-      int fd = (int)dispatch_source_get_handle(self.source);
-      if (fd > 0) close(fd);
-    });
-
-    dispatch_resume(self.source);
-  });
-}
-
-- (void)stopWatchingFile {
-  if (!self.source) return;
-
-  int fd = (int)dispatch_source_get_handle(self.source);
-  dispatch_source_set_event_handler_f(self.source, NULL);
-  dispatch_source_set_cancel_handler(self.source, ^{
-    close(fd);
-  });
-
-  dispatch_source_cancel(self.source);
-  self.source = nil;
-}
-
-@end

Source/common/SNTKernelCommon.h

@@ -21,21 +21,28 @@
 #ifndef SANTA__COMMON__KERNELCOMMON_H
 #define SANTA__COMMON__KERNELCOMMON_H
 
-// Defines the lengths of paths and Vnode IDs passed around.
-#define MAX_VNODE_ID_STR 21  // digits in UINT64_MAX + 1 for NULL-terminator
-
 // Defines the name of the userclient class and the driver bundle ID.
 #define USERCLIENT_CLASS "com_google_SantaDriver"
 #define USERCLIENT_ID "com.google.santa-driver"
 
+// Branch prediction
+#define likely(x)   __builtin_expect(!!(x), 1)
+#define unlikely(x) __builtin_expect(!!(x), 0)
+
 // List of methods supported by the driver.
 enum SantaDriverMethods {
   kSantaUserClientOpen,
   kSantaUserClientAllowBinary,
+  kSantaUserClientAllowCompiler,
   kSantaUserClientDenyBinary,
+  kSantaUserClientAcknowledgeBinary,
   kSantaUserClientClearCache,
+  kSantaUserClientRemoveCacheEntry,
   kSantaUserClientCacheCount,
   kSantaUserClientCheckCache,
+  kSantaUserClientCacheBucketCount,
+  kSantaUserClientFilemodPrefixFilterAdd,
+  kSantaUserClientFilemodPrefixFilterReset,
 
   // Any methods supported by the driver should be added above this line to
   // ensure this remains the count of methods.
@@ -44,7 +51,7 @@ enum SantaDriverMethods {
 
 typedef enum {
   QUEUETYPE_DECISION,
-  QUEUETYPE_LOG
+  QUEUETYPE_LOG,
 } santa_queuetype_t;
 
 // Enum defining actions that can be passed down the IODataQueue and in
@@ -59,6 +66,12 @@ typedef enum {
   // RESPONSES
   ACTION_RESPOND_ALLOW = 20,
   ACTION_RESPOND_DENY = 21,
+  ACTION_RESPOND_TOOLONG = 22,
+  ACTION_RESPOND_ACK = 23,
+  ACTION_RESPOND_ALLOW_COMPILER = 24,
+  // The following response is stored only in the kernel decision cache.
+  // It is removed by SNTCompilerController
+  ACTION_RESPOND_ALLOW_PENDING_TRANSITIVE = 25,
 
   // NOTIFY
   ACTION_NOTIFY_EXEC = 30,
@@ -67,18 +80,39 @@ typedef enum {
   ACTION_NOTIFY_LINK = 33,
   ACTION_NOTIFY_EXCHANGE = 34,
   ACTION_NOTIFY_DELETE = 35,
+  ACTION_NOTIFY_WHITELIST = 36,
 
   // ERROR
   ACTION_ERROR = 99,
 } santa_action_t;
 
 #define RESPONSE_VALID(x) \
-  (x == ACTION_RESPOND_ALLOW || x == ACTION_RESPOND_DENY)
+  (x == ACTION_RESPOND_ALLOW || \
+   x == ACTION_RESPOND_DENY || \
+   x == ACTION_RESPOND_ALLOW_COMPILER || \
+   x == ACTION_RESPOND_ALLOW_PENDING_TRANSITIVE)
+
+// Struct to manage vnode IDs
+typedef struct santa_vnode_id_t {
+  uint64_t fsid;
+  uint64_t fileid;
+
+#ifdef __cplusplus
+  bool operator==(const santa_vnode_id_t& rhs) const {
+    return fsid == rhs.fsid && fileid == rhs.fileid;
+  }
+  // This _must not_ be used for anything security-sensitive. It exists solely to make
+  // the msleep/wakeup calls easier.
+  uint64_t unsafe_simple_id() const {
+    return (((uint64_t)fsid << 32) | fileid);
+  }
+#endif
+} santa_vnode_id_t;
 
 // Message struct that is sent down the IODataQueue.
 typedef struct {
   santa_action_t action;
-  uint64_t vnode_id;
+  santa_vnode_id_t vnode_id;
   uid_t uid;
   gid_t gid;
   pid_t pid;
@@ -90,6 +124,18 @@ typedef struct {
   // While process names can technically be 4*MAXPATHLEN, that never
   // actually happens, so only take MAXPATHLEN and throw away any excess.
   char pname[MAXPATHLEN];
+
+  // For messages that originate from EndpointSecurity, this points to a copy of the message.
+  void *es_message;
+
+  // For messages that originate from EndpointSecurity, this points to an NSArray of the arguments.
+  void *args_array;
 } santa_message_t;
 
+// Used for the kSantaUserClientCacheBucketCount request.
+typedef struct {
+  uint16_t per_bucket[1024];
+  uint64_t start;
+} santa_bucket_count_t;
+
 #endif  // SANTA__COMMON__KERNELCOMMON_H

Source/common/SNTLogging.h

@@ -24,16 +24,22 @@
 #include <IOKit/IOLib.h>
 
 #ifdef DEBUG
-#define LOGD(...) IOLog("D santa-driver: " __VA_ARGS__); IOLog("\n")
+#define LOGD(format, ...) IOLog("D santa-driver: " format "\n", ##__VA_ARGS__);
 #else  // DEBUG
-#define LOGD(...)
+#define LOGD(format, ...)
 #endif  // DEBUG
-#define LOGI(...) IOLog("I santa-driver: " __VA_ARGS__); IOLog("\n")
-#define LOGW(...) IOLog("W santa-driver: " __VA_ARGS__); IOLog("\n")
-#define LOGE(...) IOLog("E santa-driver: " __VA_ARGS__); IOLog("\n")
+#define LOGI(format, ...) IOLog("I santa-driver: " format "\n", ##__VA_ARGS__);
+#define LOGW(format, ...) IOLog("W santa-driver: " format "\n", ##__VA_ARGS__);
+#define LOGE(format, ...) IOLog("E santa-driver: " format "\n", ##__VA_ARGS__);
 
 #else  // KERNEL
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#import <Foundation/Foundation.h>
+
 typedef enum : NSUInteger {
   LOG_LEVEL_ERROR,
   LOG_LEVEL_WARN,
@@ -58,6 +64,10 @@ void logMessage(LogLevel level, FILE *destination, NSString *format, ...)
 #define LOGW(logFormat, ...) logMessage(LOG_LEVEL_WARN, stderr, logFormat, ##__VA_ARGS__)
 #define LOGE(logFormat, ...) logMessage(LOG_LEVEL_ERROR, stderr, logFormat, ##__VA_ARGS__)
 
+#ifdef __cplusplus
+} // extern C
+#endif
+
 #endif  // KERNEL
 
 #endif  // SANTA__COMMON__LOGGING_H

Source/common/SNTLogging.m

@@ -12,7 +12,7 @@
 ///    See the License for the specific language governing permissions and
 ///    limitations under the License.
 
-#import "SNTLogging.h"
+#import "Source/common/SNTLogging.h"
 
 #import <asl.h>
 #import <pthread.h>
@@ -24,17 +24,20 @@ static LogLevel logLevel = LOG_LEVEL_INFO;  // default to info
 #endif
 
 void syslogClientDestructor(void *arg) {
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
   asl_close((aslclient)arg);
+#pragma clang diagnostic pop
 }
 
 void logMessage(LogLevel level, FILE *destination, NSString *format, ...) {
   static BOOL useSyslog = NO;
-  static const char *binaryName;
+  static NSString *binaryName;
   static dispatch_once_t pred;
   static pthread_key_t syslogKey = 0;
 
   dispatch_once(&pred, ^{
-    binaryName = [[[NSProcessInfo processInfo] processName] UTF8String];
+    binaryName = [[NSProcessInfo processInfo] processName];
 
     // If debug logging is enabled, the process must be restarted.
     if ([[[NSProcessInfo processInfo] arguments] containsObject:@"--debug"]) {
@@ -42,7 +45,8 @@ void logMessage(LogLevel level, FILE *destination, NSString *format, ...) {
     }
 
     // If requested, redirect output to syslog.
-    if ([[[NSProcessInfo processInfo] arguments] containsObject:@"--syslog"]) {
+    if ([[[NSProcessInfo processInfo] arguments] containsObject:@"--syslog"] ||
+        [binaryName isEqualToString:@"com.google.santa.daemon"]) {
       useSyslog = YES;
       pthread_key_create(&syslogKey, syslogClientDestructor);
     }
@@ -58,8 +62,11 @@ void logMessage(LogLevel level, FILE *destination, NSString *format, ...) {
   if (useSyslog) {
     aslclient client = (aslclient)pthread_getspecific(syslogKey);
     if (client == NULL) {
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
       client = asl_open(NULL, "com.google.santa", 0);
       asl_set_filter(client, ASL_FILTER_MASK_UPTO(ASL_LEVEL_DEBUG));
+#pragma clang diagnostic pop
       pthread_setspecific(syslogKey, client);
     }
 
@@ -76,7 +83,7 @@ void logMessage(LogLevel level, FILE *destination, NSString *format, ...) {
         break;
       case LOG_LEVEL_INFO:
         levelName = "I";
-        syslogLevel = ASL_LEVEL_INFO;
+        syslogLevel = ASL_LEVEL_NOTICE; // Maps to ULS Default
         break;
       case LOG_LEVEL_DEBUG:
         levelName = "D";
@@ -84,7 +91,10 @@ void logMessage(LogLevel level, FILE *destination, NSString *format, ...) {
         break;
     }
 
-    asl_log(client, NULL, syslogLevel, "%s %s: %s", levelName, binaryName, [s UTF8String]);
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+    asl_log(client, NULL, syslogLevel, "%s %s: %s", levelName, binaryName.UTF8String, s.UTF8String);
+#pragma clang diagnostic pop
   } else {
     [s appendString:@"\n"];
     size_t len = [s lengthOfBytesUsingEncoding:NSUTF8StringEncoding];

Source/common/SNTPrefixTree.cc

@@ -0,0 +1,259 @@
+/// Copyright 2018 Google Inc. All rights reserved.
+///
+/// Licensed under the Apache License, Version 2.0 (the "License");
+/// you may not use this file except in compliance with the License.
+/// You may obtain a copy of the License at
+///
+///    http://www.apache.org/licenses/LICENSE-2.0
+///
+///    Unless required by applicable law or agreed to in writing, software
+///    distributed under the License is distributed on an "AS IS" BASIS,
+///    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+///    See the License for the specific language governing permissions and
+///    limitations under the License.
+
+#include "Source/common/SNTPrefixTree.h"
+
+#ifdef KERNEL
+#include <libkern/locks.h>
+#include "Source/common/SNTLogging.h"
+
+#else
+
+#include <mutex>
+#include <string.h>
+
+#define LOGD(format, ...) // NOP
+#define LOGE(format, ...) // NOP
+
+#define lck_rw_lock_shared(l) pthread_rwlock_rdlock(&l)
+#define lck_rw_unlock_shared(l) pthread_rwlock_unlock(&l)
+#define lck_rw_lock_exclusive(l) pthread_rwlock_wrlock(&l)
+#define lck_rw_unlock_exclusive(l) pthread_rwlock_unlock(&l)
+
+#define lck_rw_lock_shared_to_exclusive(l) ({ pthread_rwlock_unlock(&l); false; })
+#define lck_rw_lock_exclusive_to_shared(l) ({ pthread_rwlock_unlock(&l); pthread_rwlock_rdlock(&l); })
+
+#define lck_mtx_lock(l) l->lock()
+#define lck_mtx_unlock(l) l->unlock()
+#endif // KERNEL
+
+SNTPrefixTree::SNTPrefixTree(uint32_t max_nodes) {
+  root_ = new SantaPrefixNode();
+  node_count_ = 0;
+  max_nodes_ = max_nodes;
+
+#ifdef KERNEL
+  spt_lock_grp_attr_ = lck_grp_attr_alloc_init();
+  spt_lock_grp_ = lck_grp_alloc_init("santa-prefix-tree-lock", spt_lock_grp_attr_);
+  spt_lock_attr_ = lck_attr_alloc_init();
+
+  spt_lock_ = lck_rw_alloc_init(spt_lock_grp_, spt_lock_attr_);
+  spt_add_lock_ = lck_mtx_alloc_init(spt_lock_grp_, spt_lock_attr_);
+#else
+  pthread_rwlock_init(&spt_lock_, nullptr);
+  spt_add_lock_ = new std::mutex;
+#endif
+}
+
+IOReturn SNTPrefixTree::AddPrefix(const char *prefix, uint64_t *node_count) {
+  // Serialize requests to AddPrefix. Otherwise one AddPrefix thread could overwrite whole
+  // branches of another. HasPrefix is still free to read the tree, until AddPrefix needs to
+  // modify it.
+  lck_mtx_lock(spt_add_lock_);
+
+  // Don't allow an empty prefix.
+  if (prefix[0] == '\0') return kIOReturnBadArgument;
+
+  LOGD("Trying to add prefix: %s", prefix);
+
+  // Enforce max tree depth.
+  size_t len = strnlen(prefix, max_nodes_);
+
+  // Grab a shared lock until a new branch is required.
+  lck_rw_lock_shared(spt_lock_);
+
+  SantaPrefixNode *node = root_;
+  for (int i = 0; i < len; ++i) {
+    // If there is a node in the path that is considered a prefix, stop adding.
+    // For our purposes we only care about the shortest path that matches.
+    if (node->isPrefix) break;
+
+    // Only process a byte at a time.
+    uint8_t value = prefix[i];
+
+    // Create the child if it does not exist.
+    if (!node->children[value]) {
+      // Upgrade the shared lock.
+      // If the upgrade fails, the shared lock is released.
+      if (!lck_rw_lock_shared_to_exclusive(spt_lock_)) {
+        // Grab a new exclusive lock.
+        lck_rw_lock_exclusive(spt_lock_);
+      }
+
+      // Is there enough room for the rest of the prefix?
+      if ((node_count_ + (len - i)) > max_nodes_) {
+        LOGE("Prefix tree is full, can not add: %s", prefix);
+
+        if (node_count) *node_count = node_count_;
+        lck_rw_unlock_exclusive(spt_lock_);
+        lck_mtx_unlock(spt_add_lock_);
+        return kIOReturnNoResources;
+      }
+
+      // Create the rest of the prefix.
+      while (i < len) {
+        value = prefix[i++];
+
+        SantaPrefixNode *new_node = new SantaPrefixNode();
+        node->children[value] = new_node;
+        ++node_count_;
+
+        node = new_node;
+      }
+
+      // This is the end, mark the node as a prefix.
+      LOGD("Added prefix: %s", prefix);
+
+      node->isPrefix = true;
+
+      // Downgrade the exclusive lock
+      lck_rw_lock_exclusive_to_shared(spt_lock_);
+    } else if (i + 1 == len) {
+      // If the child does exist and it is the end...
+      // Set the new, higher prefix and prune the now dead nodes.
+
+      if (!lck_rw_lock_shared_to_exclusive(spt_lock_)) {
+        lck_rw_lock_exclusive(spt_lock_);
+      }
+
+      PruneNode(node->children[value]);
+
+      SantaPrefixNode *new_node = new SantaPrefixNode();
+      new_node->isPrefix = true;
+
+      node->children[value] = new_node;
+      ++node_count_;
+
+      LOGD("Added prefix: %s", prefix);
+
+      lck_rw_lock_exclusive_to_shared(spt_lock_);
+    }
+
+    // Get ready for the next iteration.
+    node = node->children[value];
+  }
+
+  if (node_count) *node_count = node_count_;
+
+  lck_rw_unlock_shared(spt_lock_);
+  lck_mtx_unlock(spt_add_lock_);
+
+  return kIOReturnSuccess;
+}
+
+bool SNTPrefixTree::HasPrefix(const char *string) {
+  lck_rw_lock_shared(spt_lock_);
+
+  auto found = false;
+
+  SantaPrefixNode *node = root_;
+
+  // A well formed tree will always break this loop. Even if string doesn't terminate.
+  const char *p = string;
+  while (*p) {
+    // Only process a byte at a time.
+    node = node->children[(uint8_t)*p++];
+
+    // If it doesn't exist in the tree, no match.
+    if (!node) break;
+
+    // If it does exist, is it a prefix?
+    if (node->isPrefix) {
+      found = true;
+      break;
+    }
+  }
+
+  lck_rw_unlock_shared(spt_lock_);
+
+  return found;
+}
+
+void SNTPrefixTree::Reset() {
+  lck_rw_lock_exclusive(spt_lock_);
+
+  PruneNode(root_);
+  root_ = new SantaPrefixNode();
+  node_count_ = 0;
+
+  lck_rw_unlock_exclusive(spt_lock_);
+}
+
+void SNTPrefixTree::PruneNode(SantaPrefixNode *target) {
+  if (!target) return;
+
+  // For deep trees, a recursive approach will generate too many stack frames. Make a "stack"
+  // and walk the tree.
+  auto stack = new SantaPrefixNode *[node_count_ + 1];
+  if (!stack) {
+    LOGE("Unable to prune tree!");
+
+    return;
+  }
+  auto count = 0;
+
+  // Seed the "stack" with a starting node.
+  stack[count++] = target;
+
+  // Start at the target node and walk the tree to find and delete all the sub-nodes.
+  while (count) {
+    auto node = stack[--count];
+
+    for (int i = 0; i < 256; ++i) {
+      if (!node->children[i]) continue;
+      stack[count++] = node->children[i];
+    }
+
+    delete node;
+    --node_count_;
+  }
+
+  delete[] stack;
+}
+
+SNTPrefixTree::~SNTPrefixTree() {
+  lck_rw_lock_exclusive(spt_lock_);
+  PruneNode(root_);
+  root_ = nullptr;
+  lck_rw_unlock_exclusive(spt_lock_);
+
+#ifdef KERNEL
+  if (spt_lock_) {
+    lck_rw_free(spt_lock_, spt_lock_grp_);
+    spt_lock_ = nullptr;
+  }
+
+  if (spt_add_lock_) {
+    lck_mtx_free(spt_add_lock_, spt_lock_grp_);
+    spt_add_lock_ = nullptr;
+  }
+
+  if (spt_lock_attr_) {
+    lck_attr_free(spt_lock_attr_);
+    spt_lock_attr_ = nullptr;
+  }
+
+  if (spt_lock_grp_) {
+    lck_grp_free(spt_lock_grp_);
+    spt_lock_grp_ = nullptr;
+  }
+
+  if (spt_lock_grp_attr_) {
+    lck_grp_attr_free(spt_lock_grp_attr_);
+    spt_lock_grp_attr_ = nullptr;
+  }
+#else
+  pthread_rwlock_destroy(&spt_lock_);
+#endif
+}

Source/common/SNTPrefixTree.h

@@ -0,0 +1,103 @@
+/// Copyright 2018 Google Inc. All rights reserved.
+///
+/// Licensed under the Apache License, Version 2.0 (the "License");
+/// you may not use this file except in compliance with the License.
+/// You may obtain a copy of the License at
+///
+///    http://www.apache.org/licenses/LICENSE-2.0
+///
+///    Unless required by applicable law or agreed to in writing, software
+///    distributed under the License is distributed on an "AS IS" BASIS,
+///    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+///    See the License for the specific language governing permissions and
+///    limitations under the License.
+
+#ifndef SANTA__SANTA_DRIVER__SANTAPREFIXTREE_H
+#define SANTA__SANTA_DRIVER__SANTAPREFIXTREE_H
+
+#include <IOKit/IOReturn.h>
+#include <sys/param.h>
+
+#ifdef KERNEL
+#include <libkern/locks.h>
+#else
+// Support for unit testing.
+#include <mutex>
+#include <pthread.h>
+#include <stdint.h>
+#endif // KERNEL
+
+///
+///  SantaPrefixTree is a simple prefix tree implementation.
+///  Operations are thread safe.
+///
+class SNTPrefixTree {
+ public:
+  // Add a prefix to the tree.
+  // Optionally pass node_count to get the number of nodes after the add.
+  IOReturn AddPrefix(const char *, uint64_t *node_count = nullptr);
+
+  // Check if the tree has a prefix for string.
+  bool HasPrefix(const char *string);
+
+  // Reset the tree.
+  void Reset();
+
+  SNTPrefixTree(uint32_t max_nodes = kDefaultMaxNodes);
+  ~SNTPrefixTree();
+
+ private:
+  ///
+  ///  SantaPrefixNode is a wrapper class that represents one byte.
+  ///  1 node can represent a whole ASCII character.
+  ///  For example a pointer to the 'A' node will be stored at children[0x41].
+  ///  It takes 1-4 nodes to represent a UTF-8 encoded Unicode character.
+  ///
+  ///  The path for "/🤘" would look like this:
+  ///      children[0x2f] -> children[0xf0] -> children[0x9f] -> children[0xa4] -> children[0x98]
+  ///
+  ///  The path for "/dev" is:
+  ///      children[0x2f] -> children[0x64] -> children[0x65] -> children[0x76]
+  ///
+  ///  Lookups of children are O(1).
+  ///
+  ///  Having the nodes represented by a smaller width, such as a nibble (1/2 byte), would
+  ///  drastically decrease the memory footprint but would double required dereferences.
+  ///
+  ///  TODO(bur): Potentially convert this into a full on radix tree.
+  ///
+  class SantaPrefixNode {
+   public:
+    bool isPrefix;
+    SantaPrefixNode *children[256];
+  };
+
+  // PruneNode will remove the passed in node from the tree.
+  // The passed in node and all subnodes will be deleted.
+  // It is the caller's responsibility to reset the pointer to this node (held by the parent).
+  // If the tree is in use grab the exclusive lock.
+  void PruneNode(SantaPrefixNode *);
+
+  SantaPrefixNode *root_;
+
+  // Each node takes up ~2k, assuming MAXPATHLEN is 1024 max out at ~2MB.
+  static const uint32_t kDefaultMaxNodes = MAXPATHLEN;
+  uint32_t max_nodes_;
+  uint32_t node_count_;
+
+#ifdef KERNEL
+  lck_grp_t *spt_lock_grp_;
+  lck_grp_attr_t *spt_lock_grp_attr_;
+  lck_attr_t *spt_lock_attr_;
+  lck_rw_t *spt_lock_;
+  lck_mtx_t *spt_add_lock_;
+#else // KERNEL
+  void *spt_lock_grp_;
+  void *spt_lock_grp_attr_;
+  void *spt_lock_attr_;
+  pthread_rwlock_t spt_lock_;
+  std::mutex *spt_add_lock_;
+#endif // KERNEL
+};
+
+#endif /* SANTA__SANTA_DRIVER__SANTAPREFIXTREE_H */

Source/common/SNTPrefixTreeTest.mm

@@ -0,0 +1,70 @@
+/// Copyright 2018 Google Inc. All rights reserved.
+///
+/// Licensed under the Apache License, Version 2.0 (the "License");
+/// you may not use this file except in compliance with the License.
+/// You may obtain a copy of the License at
+///
+///    http://www.apache.org/licenses/LICENSE-2.0
+///
+///    Unless required by applicable law or agreed to in writing, software
+///    distributed under the License is distributed on an "AS IS" BASIS,
+///    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+///    See the License for the specific language governing permissions and
+///    limitations under the License.
+
+#import <XCTest/XCTest.h>
+
+#include "Source/common/SNTPrefixTree.h"
+
+@interface SNTPrefixTreeTest : XCTestCase
+@end
+
+@implementation SNTPrefixTreeTest
+
+- (void)testAddAndHas {
+  auto t = SNTPrefixTree();
+  XCTAssertFalse(t.HasPrefix("/private/var/tmp/file1"));
+  t.AddPrefix("/private/var/tmp/");
+  XCTAssertTrue(t.HasPrefix("/private/var/tmp/file1"));
+}
+
+- (void)testReset {
+  auto t = SNTPrefixTree();
+  t.AddPrefix("/private/var/tmp/");
+  XCTAssertTrue(t.HasPrefix("/private/var/tmp/file1"));
+  t.Reset();
+  XCTAssertFalse(t.HasPrefix("/private/var/tmp/file1"));
+}
+
+- (void)testThreading {
+  uint32_t count = 4096;
+  auto t = new SNTPrefixTree(count * (uint32_t)[NSUUID UUID].UUIDString.length);
+
+  NSMutableArray *UUIDs = [NSMutableArray arrayWithCapacity:count];
+  for (int i = 0; i < count; ++i) {
+    [UUIDs addObject:[NSUUID UUID].UUIDString];
+  }
+
+  // Create a bunch of background noise.
+  dispatch_async(dispatch_get_global_queue(0, 0), ^{
+    dispatch_apply(UINT64_MAX, dispatch_get_global_queue(0, 0), ^(size_t i) {
+      t->HasPrefix([UUIDs[i % count] UTF8String]);
+    });
+  });
+
+  // Fill up the tree.
+  dispatch_apply(count, dispatch_get_global_queue(0, 0), ^(size_t i) {
+    if (t->AddPrefix([UUIDs[i] UTF8String]) != kIOReturnSuccess) {
+      XCTFail();
+    }
+  });
+
+  // Make sure every leaf byte is found.
+  dispatch_apply(count, dispatch_get_global_queue(0, 0), ^(size_t i) {
+    if (!t->HasPrefix([UUIDs[i] UTF8String])) {
+      XCTFail();
+    }
+  });
+}
+
+@end

Source/common/SNTRule.h

@@ -12,7 +12,9 @@
 ///    See the License for the specific language governing permissions and
 ///    limitations under the License.
 
-#import "SNTCommonEnums.h"
+#import <Foundation/Foundation.h>
+
+#import "Source/common/SNTCommonEnums.h"
 
 ///
 ///  Represents a Rule.
@@ -39,12 +41,32 @@
 ///
 @property(copy) NSString *customMsg;
 
+///
+///  The time when this rule was last retrieved from the rules database, if rule is transitive.
+///  Stored as number of seconds since 00:00:00 UTC on 1 January 2001.
+///
+@property(readonly) NSUInteger timestamp;
+
 ///
 ///  Designated initializer.
 ///
+- (instancetype)initWithShasum:(NSString *)shasum
+                         state:(SNTRuleState)state
+                          type:(SNTRuleType)type
+                     customMsg:(NSString *)customMsg
+                     timestamp:(NSUInteger)timestamp;
+
+///
+///  Initialize with a default timestamp: current time if rule state is transitive, 0 otherwise.
+///
 - (instancetype)initWithShasum:(NSString *)shasum
                          state:(SNTRuleState)state
                           type:(SNTRuleType)type
                      customMsg:(NSString *)customMsg;
 
+///
+///  Sets timestamp of rule to the current time.
+///
+- (void)resetTimestamp;
+
 @end

Source/common/SNTRule.m

@@ -12,26 +12,51 @@
 ///    See the License for the specific language governing permissions and
 ///    limitations under the License.
 
-#import "SNTRule.h"
+#import "Source/common/SNTRule.h"
+
+@interface SNTRule()
+@property(readwrite) NSUInteger timestamp;
+@end
 
 @implementation SNTRule
 
 - (instancetype)initWithShasum:(NSString *)shasum
                          state:(SNTRuleState)state
                           type:(SNTRuleType)type
-                     customMsg:(NSString *)customMsg {
+                     customMsg:(NSString *)customMsg
+                     timestamp:(NSUInteger)timestamp {
   self = [super init];
   if (self) {
     _shasum = shasum;
     _state = state;
     _type = type;
     _customMsg = customMsg;
+    _timestamp = timestamp;
   }
   return self;
 }
 
+- (instancetype)initWithShasum:(NSString *)shasum
+                         state:(SNTRuleState)state
+                          type:(SNTRuleType)type
+                     customMsg:(NSString *)customMsg {
+  self = [self initWithShasum:shasum
+                        state:state
+                         type:type
+                    customMsg:customMsg
+                    timestamp:0];
+  // Initialize timestamp to current time if rule is transitive.
+  if (self && state == SNTRuleStateWhitelistTransitive) {
+    [self resetTimestamp];
+  }
+  return self;
+}
+
+
 #pragma mark NSSecureCoding
 
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wobjc-literal-conversion"
 #define ENCODE(obj, key) if (obj) [coder encodeObject:obj forKey:key]
 #define DECODE(cls, key) [decoder decodeObjectOfClass:[cls class] forKey:key]
 
@@ -44,6 +69,7 @@
   ENCODE(@(self.state), @"state");
   ENCODE(@(self.type), @"type");
   ENCODE(self.customMsg, @"custommsg");
+  ENCODE(@(self.timestamp), @"timestamp");
 }
 
 - (instancetype)initWithCoder:(NSCoder *)decoder {
@@ -53,12 +79,14 @@
     _state = [DECODE(NSNumber, @"state") intValue];
     _type = [DECODE(NSNumber, @"type") intValue];
     _customMsg = DECODE(NSString, @"custommsg");
+    _timestamp = [DECODE(NSNumber, @"timestamp") unsignedIntegerValue];
   }
   return self;
 }
 
 #undef DECODE
 #undef ENCODE
+#pragma clang diagnostic pop
 
 - (BOOL)isEqual:(id)other {
   if (other == self) return YES;
@@ -77,8 +105,14 @@
 }
 
 - (NSString *)description {
-  return [NSString stringWithFormat:@"SNTRule: SHA-256: %@, State: %ld, Type: %ld",
-                                    self.shasum, self.state, self.type];
+  return [NSString stringWithFormat:@"SNTRule: SHA-256: %@, State: %ld, Type: %ld, Timestamp: %lu",
+             self.shasum, self.state, self.type, (unsigned long)self.timestamp];
+}
+
+# pragma mark Last-access Timestamp
+
+- (void)resetTimestamp {
+  self.timestamp = (NSUInteger)[[NSDate date] timeIntervalSinceReferenceDate];
 }
 
 @end

Source/common/SNTStoredEvent.h

@@ -12,7 +12,9 @@
 ///    See the License for the specific language governing permissions and
 ///    limitations under the License.
 
-#import "SNTCommonEnums.h"
+#import <Foundation/Foundation.h>
+
+#import "Source/common/SNTCommonEnums.h"
 
 ///
 ///  Represents an event stored in the database.
@@ -20,7 +22,7 @@
 @interface SNTStoredEvent : NSObject<NSSecureCoding>
 
 ///
-///  An index for this event, empty unless the event came from the database.
+///  An index for this event, randomly generated during initialization.
 ///
 @property NSNumber *idx;
 
@@ -34,6 +36,28 @@
 ///
 @property NSString *filePath;
 
+///
+///  Set to YES if the event is a part of a bundle. When an event is passed to SantaGUI this propery
+///  will be used as an indicator to to kick off bundle hashing as necessary. Default value is NO.
+///
+@property BOOL needsBundleHash;
+
+///
+///  If the executed file was part of a bundle, this is the calculated hash of all the nested
+///  executables within the bundle.
+///
+@property NSString *fileBundleHash;
+
+///
+///  If the executed file was part of a bundle, this is the time in ms it took to hash the bundle.
+///
+@property NSNumber *fileBundleHashMilliseconds;
+
+///
+///  If the executed file was part of a bundle, this is the total count of related mach-o binaries.
+///
+@property NSNumber *fileBundleBinaryCount;
+
 ///
 ///  If the executed file was part of the bundle, this is the CFBundleDisplayName, if it exists
 ///  or the CFBundleName if not.
@@ -45,6 +69,11 @@
 ///
 @property NSString *fileBundlePath;
 
+///
+///  The relative path to the bundle's main executable.
+///
+@property NSString *fileBundleExecutableRelPath;
+
 ///
 ///  If the executed file was part of the bundle, this is the CFBundleID.
 ///

Source/common/SNTStoredEvent.m

@@ -12,12 +12,15 @@
 ///    See the License for the specific language governing permissions and
 ///    limitations under the License.
 
-#import "SNTStoredEvent.h"
+#import "Source/common/SNTStoredEvent.h"
 
-#import "MOLCertificate.h"
+#import <MOLCertificate/MOLCertificate.h>
 
 @implementation SNTStoredEvent
 
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wobjc-literal-conversion"
+
 #define ENCODE(obj, key) if (obj) [coder encodeObject:obj forKey:key]
 #define DECODE(cls, key) [decoder decodeObjectOfClass:[cls class] forKey:key]
 #define DECODEARRAY(cls, key) \
@@ -33,8 +36,13 @@
   ENCODE(self.fileSHA256, @"fileSHA256");
   ENCODE(self.filePath, @"filePath");
 
+  ENCODE(@(self.needsBundleHash), @"needsBundleHash");
+  ENCODE(self.fileBundleHash, @"fileBundleHash");
+  ENCODE(self.fileBundleHashMilliseconds, @"fileBundleHashMilliseconds");
+  ENCODE(self.fileBundleBinaryCount, @"fileBundleBinaryCount");
   ENCODE(self.fileBundleName, @"fileBundleName");
   ENCODE(self.fileBundlePath, @"fileBundlePath");
+  ENCODE(self.fileBundleExecutableRelPath, @"fileBundleExecutableRelPath");
   ENCODE(self.fileBundleID, @"fileBundleID");
   ENCODE(self.fileBundleVersion, @"fileBundleVersion");
   ENCODE(self.fileBundleVersionString, @"fileBundleVersionString");
@@ -57,6 +65,14 @@
   ENCODE(self.quarantineAgentBundleID, @"quarantineAgentBundleID");
 }
 
+- (instancetype)init {
+  self = [super init];
+  if (self) {
+    _idx = @(arc4random());
+  }
+  return self;
+}
+
 - (instancetype)initWithCoder:(NSCoder *)decoder {
   self = [super init];
   if (self) {
@@ -64,8 +80,13 @@
     _fileSHA256 = DECODE(NSString, @"fileSHA256");
     _filePath = DECODE(NSString, @"filePath");
 
+    _needsBundleHash = [DECODE(NSNumber, @"needsBundleHash") boolValue];
+    _fileBundleHash = DECODE(NSString, @"fileBundleHash");
+    _fileBundleHashMilliseconds = DECODE(NSNumber, @"fileBundleHashMilliseconds");
+    _fileBundleBinaryCount = DECODE(NSNumber, @"fileBundleBinaryCount");
     _fileBundleName = DECODE(NSString, @"fileBundleName");
     _fileBundlePath = DECODE(NSString, @"fileBundlePath");
+    _fileBundleExecutableRelPath = DECODE(NSString, @"fileBundleExecutableRelPath");
     _fileBundleID = DECODE(NSString, @"fileBundleID");
     _fileBundleVersion = DECODE(NSString, @"fileBundleVersion");
     _fileBundleVersionString = DECODE(NSString, @"fileBundleVersionString");
@@ -111,4 +132,6 @@
       [NSString stringWithFormat:@"SNTStoredEvent[%@] with SHA-256: %@", self.idx, self.fileSHA256];
 }
 
+#pragma clang diagnostic pop
+
 @end

Source/common/SNTSystemInfo.h

@@ -12,6 +12,8 @@
 ///    See the License for the specific language governing permissions and
 ///    limitations under the License.
 
+#import <Foundation/Foundation.h>
+
 ///
 ///  Simple class for fetching system information
 ///

Source/common/SNTSystemInfo.m

@@ -12,7 +12,7 @@
 ///    See the License for the specific language governing permissions and
 ///    limitations under the License.
 
-#import "SNTSystemInfo.h"
+#import "Source/common/SNTSystemInfo.h"
 
 @implementation SNTSystemInfo
 

Source/common/SNTXPCBundleServiceInterface.h

@@ -0,0 +1,70 @@
+/// Copyright 2017 Google Inc. All rights reserved.
+///
+/// Licensed under the Apache License, Version 2.0 (the "License");
+/// you may not use this file except in compliance with the License.
+/// You may obtain a copy of the License at
+///
+///    http://www.apache.org/licenses/LICENSE-2.0
+///
+///    Unless required by applicable law or agreed to in writing, software
+///    distributed under the License is distributed on an "AS IS" BASIS,
+///    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+///    See the License for the specific language governing permissions and
+///    limitations under the License.
+
+#import <Foundation/Foundation.h>
+
+#import <MOLXPCConnection/MOLXPCConnection.h>
+
+@class SNTStoredEvent;
+
+///  A block that takes the calculated bundle hash, associated events and hashing time in ms.
+typedef void (^SNTBundleHashBlock)(NSString *, NSArray<SNTStoredEvent *> *, NSNumber *);
+
+///  Protocol implemented by santabs and utilized by SantaGUI for bundle hashing
+@protocol SNTBundleServiceXPC
+
+///
+///  @param listener The listener to connect back to the SantaGUI.
+///
+- (void)setNotificationListener:(NSXPCListenerEndpoint *)listener;
+
+///
+///  Hash a bundle for an event. The SNTBundleHashBlock will be called with nil parameters if a
+///  failure or cancellation occurs.
+///
+///  @param event The event that includes the fileBundlePath to be hashed. This method will
+///      attempt to to find and use the ancestor bundle as a starting point.
+///  @param reply A SNTBundleHashBlock to be executed upon completion or cancellation.
+///
+///  @note If there is a current NSProgress when called this method will report back its progress.
+///
+- (void)hashBundleBinariesForEvent:(SNTStoredEvent *)event reply:(SNTBundleHashBlock)reply;
+
+///
+///  santabundleservice is launched on demand by launchd, call spindown to let santabundleservice know you are done with it.
+///
+- (void)spindown;
+
+@end
+
+@interface SNTXPCBundleServiceInterface : NSObject
+
+///
+///  Returns an initialized NSXPCInterface for the SNTBundleServiceXPC protocol.
+///  Ensures any methods that accept custom classes as arguments are set-up before returning.
+///
++ (NSXPCInterface *)bundleServiceInterface;
+
+///
+///  Returns the MachService ID for this service.
+///
++ (NSString *)serviceID;
+
+///
+///  Retrieve a pre-configured MOLXPCConnection for communicating with santabundleservice.
+///  Connections just needs any handlers set and then can be resumed and used.
+///
++ (MOLXPCConnection *)configuredConnection;
+
+@end

Source/common/SNTXPCBundleServiceInterface.m

@@ -0,0 +1,43 @@
+/// Copyright 2017 Google Inc. All rights reserved.
+///
+/// Licensed under the Apache License, Version 2.0 (the "License");
+/// you may not use this file except in compliance with the License.
+/// You may obtain a copy of the License at
+///
+///    http://www.apache.org/licenses/LICENSE-2.0
+///
+///    Unless required by applicable law or agreed to in writing, software
+///    distributed under the License is distributed on an "AS IS" BASIS,
+///    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+///    See the License for the specific language governing permissions and
+///    limitations under the License.
+
+#import "Source/common/SNTXPCBundleServiceInterface.h"
+
+#import "Source/common/SNTStoredEvent.h"
+
+@implementation SNTXPCBundleServiceInterface
+
++ (NSXPCInterface *)bundleServiceInterface {
+  NSXPCInterface *r = [NSXPCInterface interfaceWithProtocol:@protocol(SNTBundleServiceXPC)];
+
+  [r setClasses:[NSSet setWithObjects:[NSArray class], [SNTStoredEvent class], nil]
+        forSelector:@selector(hashBundleBinariesForEvent:reply:)
+      argumentIndex:1
+            ofReply:YES];
+
+  return r;
+}
+
++ (NSString *)serviceID {
+  return @"com.google.santa.bundleservice";
+}
+
++ (MOLXPCConnection *)configuredConnection {
+  MOLXPCConnection *c = [[MOLXPCConnection alloc] initClientWithName:[self serviceID]
+                                                          privileged:YES];
+  c.remoteInterface = [self bundleServiceInterface];
+  return c;
+}
+
+@end

Source/common/SNTXPCConnection.h

@@ -1,126 +0,0 @@
-/// Copyright 2015 Google Inc. All rights reserved.
-///
-/// Licensed under the Apache License, Version 2.0 (the "License");
-/// you may not use this file except in compliance with the License.
-/// You may obtain a copy of the License at
-///
-///    http://www.apache.org/licenses/LICENSE-2.0
-///
-///    Unless required by applicable law or agreed to in writing, software
-///    distributed under the License is distributed on an "AS IS" BASIS,
-///    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-///    See the License for the specific language governing permissions and
-///    limitations under the License.
-
-/**
-  A wrapper around NSXPCListener and NSXPCConnection to provide client multiplexing, signature
-  validation of connecting clients and forced connection establishment.
-
-  Example server started by @c launchd where the @c launchd job has a @c MachServices key:
-
-  @code
-   SNTXPCConnection *conn = [[SNTXPCConnection alloc] initServerWithName:@"MyServer"];
-   conn.exportedInterface = [NSXPCInterface interfaceWithProtocol:@protocol(MyServerProtocol)];
-   conn.exportedObject = myObject;
-   [conn resume];
-  @endcode
-
-  Example client, connecting to above server:
-
-  @code
-   SNTXPCConnection *conn = [[SNTXPCConnection alloc] initClientWithName:"MyServer"
-                                                             withOptions:0];
-   conn.remoteInterface = [NSXPCInterface interfaceWithProtocol:@protocol(MyServerProtocol)];
-   conn.invalidationHandler = ^{ NSLog(@"Connection invalidated") };
-   [conn resume];
-  @endcode
-
-  The client can send a message to the server with:
-
-  @code
-   [conn.remoteObjectProxy selectorInRemoteInterface];
-  @endcode
-
-  One advantage of the way that SNTXPCConnection works over using NSXPCConnection directly is that
-  from the client-side once the resume method has finished, the connection is either valid or the
-  invalidation handler will be called. Ordinarily, the connection doesn't actually get made until
-  the first message is sent across it.
-
-  @note messages are always delivered on a background thread!
-*/
-@interface SNTXPCConnection : NSObject<NSXPCListenerDelegate>
-
-/**
-  Initialize a new server with a given listener, provided by `[NSXPCListener anonymousListener]`.
-*/
-- (nullable instancetype)initServerWithListener:(nonnull NSXPCListener *)listener;
-
-/**
-  Initializer for the 'server' side of the connection, started by launchd.
-
-  @param name MachService name, must match the MachServices key in the launchd.plist
-*/
-- (nullable instancetype)initServerWithName:(nonnull NSString *)name;
-
-/**
-  Initializer a new client to a service exported by a LaunchDaemon.
-
-  @param name MachService name
-  @param privileged Use YES if the server is running as root.
-*/
-- (nullable instancetype)initClientWithName:(nonnull NSString *)name privileged:(BOOL)privileged;
-
-/**
-  Initialize a new client with a listener endpoint sent from another process.
-
-  @param listener An NSXPCListenerEndpoint to connect to.
-*/
-- (nullable instancetype)initClientWithListener:(nonnull NSXPCListenerEndpoint *)listener;
-
-/**
-  Call when the properties of the object have been set-up and you're ready for connections.
-
-  For clients, this call can take up to 2s to complete for connection to finish establishing though
-  in basically all cases it will actually complete in a few milliseconds.
-*/
-- (void)resume;
-
-/**
-  Invalidate the connection(s). This must be done before the object can be released.
-*/
-- (void)invalidate;
-
-/**
-  The interface the remote object should conform to. (client)
-*/
-@property(retain, nullable) NSXPCInterface *remoteInterface;
-
-/**
-  A proxy to the object at the other end of the connection. (client)
-
-  @note If the connection to the server failed, this will be nil, so you can safely send messages
-  and rely on the invalidationHandler for handling the failure.
-*/
-@property(readonly, nonatomic, nullable) id remoteObjectProxy;
-
-/**
-  The interface this object exports. (server)
-*/
-@property(retain, nullable) NSXPCInterface *exportedInterface;
-
-/**
-  The object that responds to messages from the other end. (server)
-*/
-@property(retain, nullable) id exportedObject;
-
-/**
-  A block to run when a/the connection is accepted and fully established.
-*/
-@property(copy, nullable) void (^acceptedHandler)(void);
-
-/**
-  A block to run when a/the connection is invalidated/interrupted/rejected.
-*/
-@property(copy, nullable) void (^invalidationHandler)(void);
-
-@end

Source/common/SNTXPCConnection.m

@@ -1,191 +0,0 @@
-/// Copyright 2015 Google Inc. All rights reserved.
-///
-/// Licensed under the Apache License, Version 2.0 (the "License");
-/// you may not use this file except in compliance with the License.
-/// You may obtain a copy of the License at
-///
-///    http://www.apache.org/licenses/LICENSE-2.0
-///
-///    Unless required by applicable law or agreed to in writing, software
-///    distributed under the License is distributed on an "AS IS" BASIS,
-///    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-///    See the License for the specific language governing permissions and
-///    limitations under the License.
-
-#import "SNTXPCConnection.h"
-
-#import "MOLCodesignChecker.h"
-
-#import "SNTStrengthify.h"
-
-/**
-  Protocol used during connection establishment, @see SNTXPCConnectionInterface
-*/
-@protocol SNTXPCConnectionProtocol
-- (void)connectWithReply:(void (^)())reply;
-@end
-
-/**
-  Recipient object used during connection establishment. Each incoming connection
-  has one of these objects created which accept the message in the protocol
-  and call the block provided during creation before replying.
-
-  This allows the server to reset the connection's exported interface and
-  object to the correct values after the client has sent the establishment message.
-*/
-@interface SNTXPCConnectionInterface : NSObject<SNTXPCConnectionProtocol>
-@property(strong) void (^block)(void);
-@end
-
-@implementation SNTXPCConnectionInterface
-- (void)connectWithReply:(void (^)())reply {
-  if (self.block) self.block();
-  reply();
-}
-@end
-
-@interface SNTXPCConnection ()
-@property NSXPCInterface *validationInterface;
-
-/// The XPC listener (server only).
-@property NSXPCListener *listenerObject;
-
-/// The current connection object (client only).
-@property NSXPCConnection *currentConnection;
-@end
-
-@implementation SNTXPCConnection
-
-#pragma mark Initializers
-
-- (instancetype)initServerWithListener:(NSXPCListener *)listener {
-  self = [super init];
-  if (self) {
-    _listenerObject = listener;
-    _validationInterface =
-        [NSXPCInterface interfaceWithProtocol:@protocol(SNTXPCConnectionProtocol)];
-  }
-  return self;
-}
-
-- (instancetype)initServerWithName:(NSString *)name {
-  return [self initServerWithListener:[[NSXPCListener alloc] initWithMachServiceName:name]];
-}
-
-- (instancetype)initClientWithListener:(NSXPCListenerEndpoint *)listener {
-  self = [super init];
-  if (self) {
-    _currentConnection = [[NSXPCConnection alloc] initWithListenerEndpoint:listener];
-    if (!_currentConnection) return nil;
-    _validationInterface =
-        [NSXPCInterface interfaceWithProtocol:@protocol(SNTXPCConnectionProtocol)];
-  }
-  return self;
-}
-
-- (instancetype)initClientWithName:(NSString *)name privileged:(BOOL)privileged {
-  self = [super init];
-  if (self) {
-    NSXPCConnectionOptions options = (privileged ? NSXPCConnectionPrivileged : 0);
-    _currentConnection = [[NSXPCConnection alloc] initWithMachServiceName:name options:options];
-    if (!_currentConnection) return nil;
-    _validationInterface =
-        [NSXPCInterface interfaceWithProtocol:@protocol(SNTXPCConnectionProtocol)];
-  }
-  return self;
-}
-
-- (instancetype)init {
-  [self doesNotRecognizeSelector:_cmd];
-  return nil;
-}
-
-#pragma mark Connection set-up
-
-- (void)resume {
-  if (self.listenerObject) {
-    self.listenerObject.delegate = self;
-    [self.listenerObject resume];
-  } else {
-    WEAKIFY(self);
-
-    // Set-up the connection with the remote interface set to the validation interface,
-    // send a message to the listener to finish establishing the connection
-    dispatch_semaphore_t sema = dispatch_semaphore_create(0);
-    self.currentConnection.remoteObjectInterface = self.validationInterface;
-    self.currentConnection.interruptionHandler = self.invalidationHandler;
-    self.currentConnection.invalidationHandler = self.invalidationHandler;
-    [self.currentConnection resume];
-    [[self.currentConnection remoteObjectProxy] connectWithReply:^{
-      STRONGIFY(self);
-      // The connection is now established
-      [self.currentConnection suspend];
-      self.currentConnection.remoteObjectInterface = self.remoteInterface;
-      [self.currentConnection resume];
-      dispatch_semaphore_signal(sema);
-      if (self.acceptedHandler) self.acceptedHandler();
-    }];
-    if (dispatch_semaphore_wait(sema, dispatch_time(DISPATCH_TIME_NOW, 2 * NSEC_PER_SEC))) {
-      // Connection was not established in a reasonable time, invalidate.
-      self.currentConnection.remoteObjectInterface = nil;  // ensure clients don't try to use it.
-      [self.currentConnection invalidate];
-    }
-  }
-}
-
-- (BOOL)listener:(NSXPCListener *)listener shouldAcceptNewConnection:(NSXPCConnection *)connection {
-  pid_t pid = connection.processIdentifier;
-  MOLCodesignChecker *otherCS = [[MOLCodesignChecker alloc] initWithPID:pid];
-  if (![otherCS signingInformationMatches:[[MOLCodesignChecker alloc] initWithSelf]]) {
-    return NO;
-  }
-
-  // The client passed the code signature check, now we need to resume the listener and
-  // return YES so that the client can send the connectWithReply message. Once the client does
-  // we reset the connection's exportedInterface and exportedObject.
-  SNTXPCConnectionInterface *ci = [[SNTXPCConnectionInterface alloc] init];
-  WEAKIFY(self);
-  WEAKIFY(connection);
-  ci.block = ^{
-    STRONGIFY(self)
-    STRONGIFY(connection);
-    [connection suspend];
-    connection.invalidationHandler = connection.interruptionHandler = ^{
-      if (self.invalidationHandler) self.invalidationHandler();
-    };
-    connection.exportedInterface = self.exportedInterface;
-    connection.exportedObject = self.exportedObject;
-    [connection resume];
-
-    // The connection is now established.
-    if (self.acceptedHandler) self.acceptedHandler();
-  };
-  connection.exportedInterface = self.validationInterface;
-  connection.exportedObject = ci;
-  [connection resume];
-
-  return YES;
-}
-
-- (id)remoteObjectProxy {
-  if (self.currentConnection.remoteObjectInterface &&
-      self.currentConnection.remoteObjectInterface != self.validationInterface) {
-    return [self.currentConnection remoteObjectProxyWithErrorHandler:^(NSError *error) {
-      [self.currentConnection invalidate];
-    }];
-  }
-  return nil;
-}
-
-#pragma mark Connection tear-down
-
-- (void)invalidate {
-  if (self.currentConnection) {
-    [self.currentConnection invalidate];
-    self.currentConnection = nil;
-  } else if (self.listenerObject) {
-    [self.listenerObject invalidate];
-  }
-}
-
-@end

Source/common/SNTXPCControlInterface.h

@@ -12,58 +12,48 @@
 ///    See the License for the specific language governing permissions and
 ///    limitations under the License.
 
-#import "SNTCommonEnums.h"
-#import "SNTKernelCommon.h"
-
-@class SNTRule;
-@class SNTStoredEvent;
-@class SNTXPCConnection;
+#import "Source/common/SNTXPCUnprivilegedControlInterface.h"
 
 ///
-///  Protocol implemented by santad and utilized by santactl
+///  Protocol implemented by santad and utilized by santactl (privileged operations)
 ///
-@protocol SNTDaemonControlXPC
+@protocol SNTDaemonControlXPC <SNTUnprivilegedDaemonControlXPC>
 
 ///
 ///  Kernel ops
 ///
-- (void)cacheCount:(void (^)(int64_t))reply;
 - (void)flushCache:(void (^)(BOOL))reply;
-- (void)checkCacheForVnodeID:(uint64_t)vnodeID withReply:(void (^)(santa_action_t))reply;
 
 ///
 ///  Database ops
 ///
-- (void)databaseRuleCounts:(void (^)(int64_t binary, int64_t certificate))reply;
 - (void)databaseRuleAddRules:(NSArray *)rules
                   cleanSlate:(BOOL)cleanSlate
                        reply:(void (^)(NSError *error))reply;
-
-- (void)databaseEventCount:(void (^)(int64_t count))reply;
-- (void)databaseEventForSHA256:(NSString *)sha256 reply:(void (^)(SNTStoredEvent *))reply;
 - (void)databaseEventsPending:(void (^)(NSArray *events))reply;
 - (void)databaseRemoveEventsWithIDs:(NSArray *)ids;
-- (void)databaseBinaryRuleForSHA256:(NSString *)sha256 reply:(void (^)(SNTRule *))reply;
-- (void)databaseCertificateRuleForSHA256:(NSString *)sha256 reply:(void (^)(SNTRule *))reply;
+- (void)databaseRuleForBinarySHA256:(NSString *)binarySHA256
+                  certificateSHA256:(NSString *)certificateSHA256
+                              reply:(void (^)(SNTRule *))reply;
 
 ///
 ///  Config ops
 ///
-- (void)watchdogInfo:(void (^)(uint64_t, uint64_t, double, double))reply;
-- (void)clientMode:(void (^)(SNTClientMode))reply;
-- (void)setClientMode:(SNTClientMode)mode reply:(void (^)())reply;
-- (void)xsrfToken:(void (^)(NSString *))reply;
-- (void)setXsrfToken:(NSString *)token reply:(void (^)())reply;
-- (void)setNextSyncInterval:(uint64_t)seconds reply:(void (^)())reply;
-- (void)setSyncLastSuccess:(NSDate *)date reply:(void (^)())reply;
-- (void)setSyncCleanRequired:(BOOL)cleanReqd reply:(void (^)())reply;
-- (void)setWhitelistPathRegex:(NSString *)pattern reply:(void (^)())reply;
-- (void)setBlacklistPathRegex:(NSString *)pattern reply:(void (^)())reply;
+- (void)setClientMode:(SNTClientMode)mode reply:(void (^)(void))reply;
+- (void)setXsrfToken:(NSString *)token reply:(void (^)(void))reply;
+- (void)setFullSyncLastSuccess:(NSDate *)date reply:(void (^)(void))reply;
+- (void)setRuleSyncLastSuccess:(NSDate *)date reply:(void (^)(void))reply;
+- (void)setSyncCleanRequired:(BOOL)cleanReqd reply:(void (^)(void))reply;
+- (void)setWhitelistPathRegex:(NSString *)pattern reply:(void (^)(void))reply;
+- (void)setBlacklistPathRegex:(NSString *)pattern reply:(void (^)(void))reply;
+- (void)setEnableBundles:(BOOL)bundlesEnabled reply:(void (^)(void))reply;
+- (void)setEnableTransitiveWhitelisting:(BOOL)enabled reply:(void (^)(void))reply;
 
 ///
-///  GUI Ops
+///  Syncd Ops
 ///
-- (void)setNotificationListener:(NSXPCListenerEndpoint *)listener;
+- (void)setSyncdListener:(NSXPCListenerEndpoint *)listener;
+- (void)postRuleSyncNotificationWithCustomMessage:(NSString *)message reply:(void (^)(void))reply;
 
 @end
 
@@ -72,18 +62,23 @@
 ///
 ///  Returns the MachService ID for this service.
 ///
-+ (NSString *)serviceId;
++ (NSString *)serviceID;
 
 ///
-///  Returns an initialized NSXPCInterface for the SNTDaemonControlXPC protocol.
+///  Returns the SystemExtension ID for this service.
+///
++ (NSString *)systemExtensionID;
+
+///
+///  Returns an initialized NSXPCInterface for the SNTUnprivilegedDaemonControlXPC protocol.
 ///  Ensures any methods that accept custom classes as arguments are set-up before returning
 ///
 + (NSXPCInterface *)controlInterface;
 
 ///
-///  Retrieve a pre-configured SNTXPCConnection for communicating with santad.
+///  Retrieve a pre-configured MOLXPCConnection for communicating with santad.
 ///  Connections just needs any handlers set and then can be resumed and used.
 ///
-+ (SNTXPCConnection *)configuredConnection;
++ (MOLXPCConnection *)configuredConnection;
 
 @end

Source/common/SNTXPCControlInterface.m

@@ -12,21 +12,35 @@
 ///    See the License for the specific language governing permissions and
 ///    limitations under the License.
 
-#import "SNTXPCControlInterface.h"
+#import "Source/common/SNTXPCControlInterface.h"
 
-#import "SNTRule.h"
-#import "SNTStoredEvent.h"
-#import "SNTXPCConnection.h"
+#import <MOLCodesignChecker/MOLCodesignChecker.h>
+#import <MOLXPCConnection/MOLXPCConnection.h>
+
+#import "Source/common/SNTCommonEnums.h"
+#import "Source/common/SNTConfigurator.h"
+#import "Source/common/SNTRule.h"
+#import "Source/common/SNTStoredEvent.h"
+
+NSString *const kBundleID = @"com.google.santa.daemon";
 
 @implementation SNTXPCControlInterface
 
-+ (NSString *)serviceId {
-  return @"SantaXPCControl";
++ (NSString *)serviceID {
+  if ([[SNTConfigurator configurator] enableSystemExtension]) {
+    MOLCodesignChecker *cs = [[MOLCodesignChecker alloc] initWithSelf];
+    // "teamid.com.google.santa.daemon.xpc"
+    NSString *t = cs.signingInformation[@"teamid"];
+    return [NSString stringWithFormat:@"%@.%@.xpc", t, kBundleID];
+  }
+  return kBundleID;
 }
 
-+ (NSXPCInterface *)controlInterface {
-  NSXPCInterface *r = [NSXPCInterface interfaceWithProtocol:@protocol(SNTDaemonControlXPC)];
++ (NSString *)systemExtensionID {
+  return kBundleID;
+}
 
++ (void)initializeControlInterface:(NSXPCInterface *)r {
   [r setClasses:[NSSet setWithObjects:[NSArray class], [SNTStoredEvent class], nil]
         forSelector:@selector(databaseEventsPending:)
       argumentIndex:0
@@ -36,12 +50,17 @@
         forSelector:@selector(databaseRuleAddRules:cleanSlate:reply:)
       argumentIndex:0
             ofReply:NO];
+}
+
++ (NSXPCInterface *)controlInterface {
+  NSXPCInterface *r = [NSXPCInterface interfaceWithProtocol:@protocol(SNTDaemonControlXPC)];
+  [self initializeControlInterface:r];
 
   return r;
 }
 
-+ (SNTXPCConnection *)configuredConnection {
-  SNTXPCConnection *c = [[SNTXPCConnection alloc] initClientWithName:[self serviceId]
++ (MOLXPCConnection *)configuredConnection {
+  MOLXPCConnection *c = [[MOLXPCConnection alloc] initClientWithName:[self serviceID]
                                                           privileged:YES];
   c.remoteInterface = [self controlInterface];
   return c;

Source/common/SNTXPCNotifierInterface.h

@@ -12,7 +12,10 @@
 ///    See the License for the specific language governing permissions and
 ///    limitations under the License.
 
-#import "SNTCommonEnums.h"
+#import <Foundation/Foundation.h>
+
+#import "Source/common/SNTCommonEnums.h"
+#import "Source/common/SNTXPCBundleServiceInterface.h"
 
 @class SNTStoredEvent;
 
@@ -20,6 +23,11 @@
 @protocol SNTNotifierXPC
 - (void)postBlockNotification:(SNTStoredEvent *)event withCustomMessage:(NSString *)message;
 - (void)postClientModeNotification:(SNTClientMode)clientmode;
+- (void)postRuleSyncNotificationWithCustomMessage:(NSString *)message;
+- (void)updateCountsForEvent:(SNTStoredEvent *)event
+                 binaryCount:(uint64_t)binaryCount
+                   fileCount:(uint64_t)fileCount
+                 hashedCount:(uint64_t)hashedCount;
 @end
 
 @interface SNTXPCNotifierInterface : NSObject

Source/common/SNTXPCNotifierInterface.m

@@ -12,7 +12,7 @@
 ///    See the License for the specific language governing permissions and
 ///    limitations under the License.
 
-#import "SNTXPCNotifierInterface.h"
+#import "Source/common/SNTXPCNotifierInterface.h"
 
 @implementation SNTXPCNotifierInterface
 

Source/common/SNTXPCSyncdInterface.h

@@ -0,0 +1,37 @@
+/// Copyright 2016 Google Inc. All rights reserved.
+///
+/// Licensed under the Apache License, Version 2.0 (the "License");
+/// you may not use this file except in compliance with the License.
+/// You may obtain a copy of the License at
+///
+///    http://www.apache.org/licenses/LICENSE-2.0
+///
+///    Unless required by applicable law or agreed to in writing, software
+///    distributed under the License is distributed on an "AS IS" BASIS,
+///    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+///    See the License for the specific language governing permissions and
+///    limitations under the License.
+
+#import <Foundation/Foundation.h>
+
+#import "Source/common/SNTCommonEnums.h"
+
+@class SNTStoredEvent;
+
+/// Protocol implemented by santactl and utilized by santad
+@protocol SNTSyncdXPC
+- (void)postEventsToSyncServer:(NSArray<SNTStoredEvent *> *)events isFromBundle:(BOOL)isFromBundle;
+- (void)postBundleEventToSyncServer:(SNTStoredEvent *)event
+                              reply:(void (^)(SNTBundleEventAction))reply;
+- (void)isFCMListening:(void (^)(BOOL))reply;
+@end
+
+@interface SNTXPCSyncdInterface : NSObject
+
+///
+///  Returns an initialized NSXPCInterface for the SNTSyncdXPC protocol.
+///  Ensures any methods that accept custom classes as arguments are set-up before returning
+///
++ (NSXPCInterface *)syncdInterface;
+
+@end

Source/common/SNTXPCSyncdInterface.m

@@ -1,4 +1,4 @@
-/// Copyright 2015 Google Inc. All rights reserved.
+/// Copyright 2016 Google Inc. All rights reserved.
 ///
 /// Licensed under the Apache License, Version 2.0 (the "License");
 /// you may not use this file except in compliance with the License.
@@ -12,22 +12,21 @@
 ///    See the License for the specific language governing permissions and
 ///    limitations under the License.
 
-#import "SNTKernelCommon.h"
+#import "Source/common/SNTXPCSyncdInterface.h"
 
-@class SNTCachedDecision;
+#import "Source/common/SNTStoredEvent.h"
 
-///
-///  Logs execution and file write events to syslog
-///
-@interface SNTEventLog : NSObject
+@implementation SNTXPCSyncdInterface
 
-- (void)logDiskAppeared:(NSDictionary *)diskProperties;
-- (void)logDiskDisappeared:(NSDictionary *)diskProperties;
++ (NSXPCInterface *)syncdInterface {
+  NSXPCInterface *r = [NSXPCInterface interfaceWithProtocol:@protocol(SNTSyncdXPC)];
 
-- (void)logFileModification:(santa_message_t)message;
+  [r setClasses:[NSSet setWithObjects:[NSArray class], [SNTStoredEvent class], nil]
+        forSelector:@selector(postEventsToSyncServer:isFromBundle:)
+      argumentIndex:0
+            ofReply:NO];
 
-- (void)saveDecisionDetails:(SNTCachedDecision *)cd;
-- (void)logDeniedExecution:(SNTCachedDecision *)cd withMessage:(santa_message_t)message;
-- (void)logAllowedExecution:(santa_message_t)message;
+  return r;
+}
 
 @end

Source/common/SNTXPCUnprivilegedControlInterface.h

@@ -0,0 +1,106 @@
+/// Copyright 2015 Google Inc. All rights reserved.
+///
+/// Licensed under the Apache License, Version 2.0 (the "License");
+/// you may not use this file except in compliance with the License.
+/// You may obtain a copy of the License at
+///
+///    http://www.apache.org/licenses/LICENSE-2.0
+///
+///    Unless required by applicable law or agreed to in writing, software
+///    distributed under the License is distributed on an "AS IS" BASIS,
+///    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+///    See the License for the specific language governing permissions and
+///    limitations under the License.
+
+#import <Foundation/Foundation.h>
+#import <MOLCertificate/MOLCertificate.h>
+
+#import "Source/common/SNTCommonEnums.h"
+#import "Source/common/SNTKernelCommon.h"
+
+@class SNTRule;
+@class SNTStoredEvent;
+@class MOLXPCConnection;
+
+///
+///  Protocol implemented by santad and utilized by santactl (unprivileged operations)
+///
+@protocol SNTUnprivilegedDaemonControlXPC
+
+///
+///  Kernel ops
+///
+- (void)cacheCounts:(void (^)(uint64_t rootCache, uint64_t nonRootCache))reply;
+- (void)cacheBucketCount:(void (^)(NSArray *))reply;
+- (void)checkCacheForVnodeID:(santa_vnode_id_t)vnodeID withReply:(void (^)(santa_action_t))reply;
+- (void)driverConnectionEstablished:(void (^)(BOOL))reply;
+
+///
+///  Database ops
+///
+- (void)databaseRuleCounts:(void (^)(int64_t binary,
+                                     int64_t certificate,
+                                     int64_t compiler,
+                                     int64_t transitive))reply;
+- (void)databaseEventCount:(void (^)(int64_t count))reply;
+
+///
+///  Decision ops
+///
+
+///
+///  @param filePath A Path to the file, can be nil.
+///  @param fileSHA256 The pre-calculated SHA256 hash for the file, can be nil. If nil the hash will
+///                    be calculated by this method from the filePath.
+///  @param certificateSHA256 A SHA256 hash of the signing certificate, can be nil.
+///  @note If fileInfo and signingCertificate are both passed in, the most specific rule will be
+///        returned. Binary rules take precedence over cert rules.
+///
+- (void)decisionForFilePath:(NSString *)filePath
+                 fileSHA256:(NSString *)fileSHA256
+          certificateSHA256:(NSString *)certificateSHA256
+                      reply:(void (^)(SNTEventState))reply;
+
+///
+///  Config ops
+///
+- (void)watchdogInfo:(void (^)(uint64_t, uint64_t, double, double))reply;
+- (void)xsrfToken:(void (^)(NSString *))reply;
+- (void)clientMode:(void (^)(SNTClientMode))reply;
+- (void)fullSyncLastSuccess:(void (^)(NSDate *))reply;
+- (void)ruleSyncLastSuccess:(void (^)(NSDate *))reply;
+- (void)syncCleanRequired:(void (^)(BOOL))reply;
+- (void)enableBundles:(void (^)(BOOL))reply;
+- (void)enableTransitiveWhitelisting:(void (^)(BOOL))reply;
+
+///
+///  GUI Ops
+///
+- (void)setNotificationListener:(NSXPCListenerEndpoint *)listener;
+
+///
+///  Syncd Ops
+///
+- (void)pushNotifications:(void (^)(BOOL))reply;
+
+///
+///  Bundle Ops
+///
+- (void)syncBundleEvent:(SNTStoredEvent *)event relatedEvents:(NSArray<SNTStoredEvent *> *)events;
+
+@end
+
+@interface SNTXPCUnprivilegedControlInterface : NSObject
+
+///
+///  Returns an initialized NSXPCInterface for the SNTUnprivilegedDaemonControlXPC protocol.
+///  Ensures any methods that accept custom classes as arguments are set-up before returning
+///
++ (NSXPCInterface *)controlInterface;
+
+///
+///  Internal method used to initialize the control interface
+///
++ (void)initializeControlInterface:(NSXPCInterface *)r;
+
+@end

Source/common/SNTXPCUnprivilegedControlInterface.m

@@ -0,0 +1,38 @@
+/// Copyright 2015 Google Inc. All rights reserved.
+///
+/// Licensed under the Apache License, Version 2.0 (the "License");
+/// you may not use this file except in compliance with the License.
+/// You may obtain a copy of the License at
+///
+///    http://www.apache.org/licenses/LICENSE-2.0
+///
+///    Unless required by applicable law or agreed to in writing, software
+///    distributed under the License is distributed on an "AS IS" BASIS,
+///    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+///    See the License for the specific language governing permissions and
+///    limitations under the License.
+
+#import "Source/common/SNTXPCUnprivilegedControlInterface.h"
+
+#import <MOLXPCConnection/MOLXPCConnection.h>
+
+#import "Source/common/SNTRule.h"
+#import "Source/common/SNTStoredEvent.h"
+
+@implementation SNTXPCUnprivilegedControlInterface
+
++ (void)initializeControlInterface:(NSXPCInterface *)r {
+  [r setClasses:[NSSet setWithObjects:[NSArray class], [SNTStoredEvent class], nil]
+        forSelector:@selector(syncBundleEvent:relatedEvents:)
+      argumentIndex:1
+            ofReply:NO];
+}
+
++ (NSXPCInterface *)controlInterface {
+  NSXPCInterface *r = [NSXPCInterface interfaceWithProtocol:@protocol(SNTUnprivilegedDaemonControlXPC)];
+  [self initializeControlInterface:r];
+
+  return r;
+}
+
+@end

Source/common/testdata/BundleExample.app/Contents/Info.plist

@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>BuildMachineOSBuild</key>
+	<string>16F73</string>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>en</string>
+	<key>CFBundleExecutable</key>
+	<string>BundleExample</string>
+	<key>CFBundleIdentifier</key>
+	<string>com.google.santa.BundleExample</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>BundleExample</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleSupportedPlatforms</key>
+	<array>
+		<string>MacOSX</string>
+	</array>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>DTCompiler</key>
+	<string>com.apple.compilers.llvm.clang.1_0</string>
+	<key>DTPlatformBuild</key>
+	<string>7D1014</string>
+	<key>DTPlatformVersion</key>
+	<string>GM</string>
+	<key>DTSDKBuild</key>
+	<string>15E60</string>
+	<key>DTSDKName</key>
+	<string>macosx10.11</string>
+	<key>DTXcode</key>
+	<string>0731</string>
+	<key>DTXcodeBuild</key>
+	<string>7D1014</string>
+	<key>LSMinimumSystemVersion</key>
+	<string>10.12</string>
+	<key>NSHumanReadableCopyright</key>
+	<string>Copyright © 2017 Google. All rights reserved.</string>
+	<key>NSMainNibFile</key>
+	<string>MainMenu</string>
+	<key>NSPrincipalClass</key>
+	<string>NSApplication</string>
+</dict>
+</plist>

Source/common/testdata/DirectoryBundle/Contents/Info.plist

@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>BuildMachineOSBuild</key>
+	<string>16F73</string>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>en</string>
+	<key>CFBundleExecutable</key>
+	<string>DirectoryBundle</string>
+	<key>CFBundleIdentifier</key>
+	<string>com.google.santa.DirectoryBundle</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>DirectoryBundle</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleSupportedPlatforms</key>
+	<array>
+		<string>MacOSX</string>
+	</array>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>DTCompiler</key>
+	<string>com.apple.compilers.llvm.clang.1_0</string>
+	<key>DTPlatformBuild</key>
+	<string>7D1014</string>
+	<key>DTPlatformVersion</key>
+	<string>GM</string>
+	<key>DTSDKBuild</key>
+	<string>15E60</string>
+	<key>DTSDKName</key>
+	<string>macosx10.11</string>
+	<key>DTXcode</key>
+	<string>0731</string>
+	<key>DTXcodeBuild</key>
+	<string>7D1014</string>
+	<key>LSMinimumSystemVersion</key>
+	<string>10.12</string>
+	<key>NSHumanReadableCopyright</key>
+	<string>Copyright © 2018 Google. All rights reserved.</string>
+	<key>NSMainNibFile</key>
+	<string>MainMenu</string>
+	<key>NSPrincipalClass</key>
+	<string>NSApplication</string>
+</dict>
+</plist>

Source/common/testdata/DirectoryBundle/Contents/Resources/BundleExample.app/Contents/Info.plist

@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>BuildMachineOSBuild</key>
+	<string>16F73</string>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>en</string>
+	<key>CFBundleExecutable</key>
+	<string>BundleExample</string>
+	<key>CFBundleIdentifier</key>
+	<string>com.google.santa.BundleExample</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>BundleExample</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleSupportedPlatforms</key>
+	<array>
+		<string>MacOSX</string>
+	</array>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>DTCompiler</key>
+	<string>com.apple.compilers.llvm.clang.1_0</string>
+	<key>DTPlatformBuild</key>
+	<string>7D1014</string>
+	<key>DTPlatformVersion</key>
+	<string>GM</string>
+	<key>DTSDKBuild</key>
+	<string>15E60</string>
+	<key>DTSDKName</key>
+	<string>macosx10.11</string>
+	<key>DTXcode</key>
+	<string>0731</string>
+	<key>DTXcodeBuild</key>
+	<string>7D1014</string>
+	<key>LSMinimumSystemVersion</key>
+	<string>10.12</string>
+	<key>NSHumanReadableCopyright</key>
+	<string>Copyright © 2017 Google. All rights reserved.</string>
+	<key>NSMainNibFile</key>
+	<string>MainMenu</string>
+	<key>NSPrincipalClass</key>
+	<string>NSApplication</string>
+</dict>
+</plist>

Source/santa-driver/SantaDecisionManager.cc

@@ -1,535 +0,0 @@
-/// Copyright 2015 Google Inc. All rights reserved.
-///
-/// Licensed under the Apache License, Version 2.0 (the "License");
-/// you may not use this file except in compliance with the License.
-/// You may obtain a copy of the License at
-///
-///    http://www.apache.org/licenses/LICENSE-2.0
-///
-///    Unless required by applicable law or agreed to in writing, software
-///    distributed under the License is distributed on an "AS IS" BASIS,
-///    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-///    See the License for the specific language governing permissions and
-///    limitations under the License.
-
-#include "SantaDecisionManager.h"
-
-#define super OSObject
-OSDefineMetaClassAndStructors(SantaDecisionManager, OSObject);
-
-#pragma mark Object Lifecycle
-
-bool SantaDecisionManager::init() {
-  if (!super::init()) return false;
-
-  sdm_lock_grp_attr_ = lck_grp_attr_alloc_init();
-  sdm_lock_grp_ = lck_grp_alloc_init("santa-locks", sdm_lock_grp_attr_);
-  sdm_lock_attr_ = lck_attr_alloc_init();
-
-  decision_dataqueue_lock_ = lck_mtx_alloc_init(sdm_lock_grp_, sdm_lock_attr_);
-  log_dataqueue_lock_ = lck_mtx_alloc_init(sdm_lock_grp_, sdm_lock_attr_);
-
-  decision_cache_ = new SantaCache<uint64_t>(10000, 2);
-  vnode_pid_map_ = new SantaCache<uint64_t>(2000, 5);
-
-  decision_dataqueue_ = IOSharedDataQueue::withEntries(
-      kMaxDecisionQueueEvents, sizeof(santa_message_t));
-  if (!decision_dataqueue_) return kIOReturnNoMemory;
-
-  log_dataqueue_ = IOSharedDataQueue::withEntries(
-      kMaxLogQueueEvents, sizeof(santa_message_t));
-  if (!log_dataqueue_) return kIOReturnNoMemory;
-
-  client_pid_ = 0;
-
-  return true;
-}
-
-void SantaDecisionManager::free() {
-  delete decision_cache_;
-  delete vnode_pid_map_;
-
-  if (decision_dataqueue_lock_) {
-    lck_mtx_free(decision_dataqueue_lock_, sdm_lock_grp_);
-    decision_dataqueue_lock_ = nullptr;
-  }
-
-  if (log_dataqueue_lock_) {
-    lck_mtx_free(log_dataqueue_lock_, sdm_lock_grp_);
-    log_dataqueue_lock_ = nullptr;
-  }
-
-  if (sdm_lock_attr_) {
-    lck_attr_free(sdm_lock_attr_);
-    sdm_lock_attr_ = nullptr;
-  }
-
-  if (sdm_lock_grp_) {
-    lck_grp_free(sdm_lock_grp_);
-    sdm_lock_grp_ = nullptr;
-  }
-
-  if (sdm_lock_grp_attr_) {
-    lck_grp_attr_free(sdm_lock_grp_attr_);
-    sdm_lock_grp_attr_ = nullptr;
-  }
-
-  OSSafeReleaseNULL(decision_dataqueue_);
-  OSSafeReleaseNULL(log_dataqueue_);
-
-  super::free();
-}
-
-#pragma mark Client Management
-
-void SantaDecisionManager::ConnectClient(pid_t pid) {
-  if (!pid) return;
-
-  client_pid_ = pid;
-
-  // Any decisions made while the daemon wasn't
-  // connected should be cleared
-  ClearCache();
-
-  failed_decision_queue_requests_ = 0;
-  failed_log_queue_requests_ = 0;
-}
-
-void SantaDecisionManager::DisconnectClient(bool itDied) {
-  if (client_pid_ < 1) return;
-  client_pid_ = 0;
-
-  // Ask santad to shutdown, in case it's running.
-  if (!itDied) {
-    auto message = new santa_message_t;
-    message->action = ACTION_REQUEST_SHUTDOWN;
-    PostToDecisionQueue(message);
-    delete message;
-    decision_dataqueue_->setNotificationPort(nullptr);
-  } else {
-    // If the client died, reset the data queues so when it reconnects
-    // it doesn't get swamped straight away.
-    lck_mtx_lock(decision_dataqueue_lock_);
-    decision_dataqueue_->release();
-    decision_dataqueue_ = IOSharedDataQueue::withEntries(
-        kMaxDecisionQueueEvents, sizeof(santa_message_t));
-    lck_mtx_unlock(decision_dataqueue_lock_);
-
-    lck_mtx_lock(log_dataqueue_lock_);
-    log_dataqueue_->release();
-    log_dataqueue_ = IOSharedDataQueue::withEntries(
-        kMaxLogQueueEvents, sizeof(santa_message_t));
-    lck_mtx_unlock(log_dataqueue_lock_);
-  }
-}
-
-bool SantaDecisionManager::ClientConnected() const {
-  if (client_pid_ <= 0) return false;
-  auto p = proc_find(client_pid_);
-  auto is_exiting = false;
-  if (p) {
-    is_exiting = proc_exiting(p);
-    proc_rele(p);
-  }
-  return (client_pid_ > 0 && !is_exiting);
-}
-
-void SantaDecisionManager::SetDecisionPort(mach_port_t port) {
-  lck_mtx_lock(decision_dataqueue_lock_);
-  decision_dataqueue_->setNotificationPort(port);
-  lck_mtx_unlock(decision_dataqueue_lock_);
-}
-
-void SantaDecisionManager::SetLogPort(mach_port_t port) {
-  lck_mtx_lock(log_dataqueue_lock_);
-  log_dataqueue_->setNotificationPort(port);
-  lck_mtx_unlock(log_dataqueue_lock_);
-}
-
-IOMemoryDescriptor *SantaDecisionManager::GetDecisionMemoryDescriptor() const {
-  return decision_dataqueue_->getMemoryDescriptor();
-}
-
-IOMemoryDescriptor *SantaDecisionManager::GetLogMemoryDescriptor() const {
-  return log_dataqueue_->getMemoryDescriptor();
-}
-
-#pragma mark Listener Control
-
-kern_return_t SantaDecisionManager::StartListener() {
-  vnode_listener_ = kauth_listen_scope(
-      KAUTH_SCOPE_VNODE, vnode_scope_callback, reinterpret_cast<void *>(this));
-  if (!vnode_listener_) return kIOReturnInternalError;
-
-  fileop_listener_ = kauth_listen_scope(
-      KAUTH_SCOPE_FILEOP, fileop_scope_callback, reinterpret_cast<void *>(this));
-  if (!fileop_listener_) return kIOReturnInternalError;
-
-  LOGD("Listeners started.");
-
-  return kIOReturnSuccess;
-}
-
-kern_return_t SantaDecisionManager::StopListener() {
-  kauth_unlisten_scope(vnode_listener_);
-  vnode_listener_ = nullptr;
-
-  kauth_unlisten_scope(fileop_listener_);
-  fileop_listener_ = nullptr;
-
-  // Wait for any active invocations to finish before returning
-  do {
-    IOSleep(5);
-  } while (listener_invocations_);
-
-  // Delete any cached decisions
-  ClearCache();
-
-  LOGD("Listeners stopped.");
-
-  return kIOReturnSuccess;
-}
-
-#pragma mark Cache Management
-
-void SantaDecisionManager::AddToCache(
-    uint64_t identifier, santa_action_t decision, uint64_t microsecs) {
-  // Decision is stored in upper 8 bits, timestamp in remaining 56.
-  uint64_t val = ((uint64_t)decision << 56) | (microsecs & 0xFFFFFFFFFFFFFF);
-
-  // If a previous entry was not found and the new entry is not `REQUEST_BINARY`, remove the
-  // existing entry. This is to prevent adding an ALLOW to the cache after a write has occurred.
-  if (decision_cache_->set(identifier, val) == 0 && decision != ACTION_REQUEST_BINARY) {
-    decision_cache_->remove(identifier);
-  }
-}
-
-void SantaDecisionManager::RemoveFromCache(uint64_t identifier) {
-  decision_cache_->remove(identifier);
-}
-
-uint64_t SantaDecisionManager::CacheCount() const {
-  return decision_cache_->count();
-}
-
-void SantaDecisionManager::ClearCache() {
-  decision_cache_->clear();
-}
-
-#pragma mark Decision Fetching
-
-santa_action_t SantaDecisionManager::GetFromCache(uint64_t identifier) {
-  auto result = ACTION_UNSET;
-  uint64_t decision_time = 0;
-
-  uint64_t cache_val = decision_cache_->get(identifier);
-  if (cache_val == 0) return result;
-
-  // Decision is stored in upper 8 bits, timestamp in remaining 56.
-  result = (santa_action_t)(cache_val >> 56);
-  decision_time = (cache_val & ~(0xFF00000000000000));
-
-  if (RESPONSE_VALID(result)) {
-    if (result == ACTION_RESPOND_DENY) {
-      auto diff_time = GetCurrentUptime();
-      if ((kMaxDenyCacheTimeMilliseconds * 1000) > diff_time) {
-        diff_time = 0;
-      } else {
-        diff_time -= (kMaxDenyCacheTimeMilliseconds * 1000);
-      }
-      if (decision_time < diff_time) {
-        decision_cache_->remove(identifier);
-        return ACTION_UNSET;
-      }
-    }
-  }
-
-  return result;
-}
-
-santa_action_t SantaDecisionManager::GetFromDaemon(santa_message_t *message, uint64_t identifier) {
-  auto return_action = ACTION_UNSET;
-
-  // Wait for the daemon to respond or die.
-  do {
-    // Add pending request to cache, to be replaced by daemon with actual response
-    AddToCache(identifier, ACTION_REQUEST_BINARY, 0);
-
-    // Send request to daemon...
-    if (!PostToDecisionQueue(message)) {
-      OSIncrementAtomic(&failed_decision_queue_requests_);
-      if (failed_decision_queue_requests_ > kMaxDecisionQueueFailures) {
-        LOGE("Failed to queue more than %d requests, killing daemon",
-             kMaxDecisionQueueFailures);
-        proc_signal(client_pid_, SIGKILL);
-        client_pid_ = 0;
-      }
-      LOGE("Failed to queue request for %s.", message->path);
-      RemoveFromCache(identifier);
-      return ACTION_ERROR;
-    }
-
-    do {
-      IOSleep(kRequestLoopSleepMilliseconds);
-      return_action = GetFromCache(identifier);
-    } while (return_action == ACTION_REQUEST_BINARY && ClientConnected());
-  } while (!RESPONSE_VALID(return_action) && ClientConnected());
-
-  // If response is still not valid, the daemon exited
-  if (!RESPONSE_VALID(return_action)) {
-    LOGE("Daemon process did not respond correctly. Allowing executions "
-         "until it comes back. Executable path: %s", message->path);
-    RemoveFromCache(identifier);
-    return ACTION_ERROR;
-  }
-
-  return return_action;
-}
-
-santa_action_t SantaDecisionManager::FetchDecision(
-    const kauth_cred_t cred,
-    const vnode_t vp,
-    const uint64_t vnode_id,
-    const char *vnode_id_str) {
-  if (!ClientConnected()) return ACTION_RESPOND_ALLOW;
-
-  // Check to see if item is in cache
-  auto return_action = GetFromCache(vnode_id);
-
-  // If item was in cache return it.
-  if (RESPONSE_VALID(return_action)) return return_action;
-
-  // Get path
-  char path[MAXPATHLEN];
-  int name_len = MAXPATHLEN;
-  if (vn_getpath(vp, path, &name_len) != 0) {
-    path[0] = '\0';
-  }
-
-  auto message = NewMessage(cred);
-  strlcpy(message->path, path, sizeof(message->path));
-  message->action = ACTION_REQUEST_BINARY;
-  message->vnode_id = vnode_id;
-  proc_name(message->ppid, message->pname, sizeof(message->pname));
-  return_action = GetFromDaemon(message, vnode_id);
-  delete message;
-  return return_action;
-}
-
-#pragma mark Misc
-
-bool SantaDecisionManager::PostToDecisionQueue(santa_message_t *message) {
-  lck_mtx_lock(decision_dataqueue_lock_);
-  auto kr = decision_dataqueue_->enqueue(message, sizeof(santa_message_t));
-  lck_mtx_unlock(decision_dataqueue_lock_);
-  return kr;
-}
-
-bool SantaDecisionManager::PostToLogQueue(santa_message_t *message) {
-  lck_mtx_lock(log_dataqueue_lock_);
-  auto kr = log_dataqueue_->enqueue(message, sizeof(santa_message_t));
-  if (!kr) {
-    if (OSCompareAndSwap(0, 1, &failed_log_queue_requests_)) {
-      LOGW("Dropping log queue messages");
-    }
-    // If enqueue failed, pop an item off the queue and try again.
-    uint32_t dataSize = 0;
-    log_dataqueue_->dequeue(0, &dataSize);
-    kr = log_dataqueue_->enqueue(message, sizeof(santa_message_t));
-  } else {
-    OSCompareAndSwap(1, 0, &failed_log_queue_requests_);
-  }
-  lck_mtx_unlock(log_dataqueue_lock_);
-  return kr;
-}
-
-#pragma mark Invocation Tracking & PID comparison
-
-void SantaDecisionManager::IncrementListenerInvocations() {
-  OSIncrementAtomic(&listener_invocations_);
-}
-
-void SantaDecisionManager::DecrementListenerInvocations() {
-  OSDecrementAtomic(&listener_invocations_);
-}
-
-#pragma mark Callbacks
-
-int SantaDecisionManager::VnodeCallback(const kauth_cred_t cred,
-                                        const vfs_context_t ctx,
-                                        const vnode_t vp,
-                                        int *errno) {
-  // Only operate on regular files (not directories, symlinks, etc.).
-  if (vnode_vtype(vp) != VREG) return KAUTH_RESULT_DEFER;
-
-  // Get ID for the vnode and convert it to a string.
-  auto vnode_id = GetVnodeIDForVnode(ctx, vp);
-  char vnode_str[MAX_VNODE_ID_STR];
-  snprintf(vnode_str, MAX_VNODE_ID_STR, "%llu", vnode_id);
-
-  // Fetch decision
-  auto returnedAction = FetchDecision(cred, vp, vnode_id, vnode_str);
-
-  // If file has dirty blocks, remove from cache and deny. This would usually
-  // be the case if a file has been written to and flushed but not yet
-  // closed.
-  if (vnode_hasdirtyblks(vp)) {
-    RemoveFromCache(vnode_id);
-    returnedAction = ACTION_RESPOND_DENY;
-  }
-
-  switch (returnedAction) {
-    case ACTION_RESPOND_ALLOW: {
-      auto proc = vfs_context_proc(ctx);
-      if (proc) {
-        pid_t pid = proc_pid(proc);
-        pid_t ppid = proc_ppid(proc);
-        // pid_t is 32-bit; pid is in upper 32 bits, ppid in lower.
-        uint64_t val = ((uint64_t)pid << 32) | (ppid & 0xFFFFFFFF);
-        vnode_pid_map_->set(vnode_id, val);
-      }
-      return KAUTH_RESULT_ALLOW;
-    }
-    case ACTION_RESPOND_DENY:
-      *errno = EPERM;
-      return KAUTH_RESULT_DENY;
-    default:
-      // NOTE: Any unknown response or error condition causes us to fail open.
-      // Whilst from a security perspective this is bad, it's important that
-      // we don't break user's machines.
-      return KAUTH_RESULT_DEFER;
-  }
-}
-
-void SantaDecisionManager::FileOpCallback(
-    const kauth_action_t action, const vnode_t vp,
-    const char *path, const char *new_path) {
-  if (vp) {
-    auto context = vfs_context_create(nullptr);
-    auto vnode_id = GetVnodeIDForVnode(context, vp);
-    vfs_context_rele(context);
-
-    if (action == KAUTH_FILEOP_CLOSE) {
-      char vnode_id_str[MAX_VNODE_ID_STR];
-      snprintf(vnode_id_str, MAX_VNODE_ID_STR, "%llu", vnode_id);
-      RemoveFromCache(vnode_id);
-    } else if (action == KAUTH_FILEOP_EXEC) {
-      auto message = NewMessage(nullptr);
-      message->vnode_id = vnode_id;
-      message->action = ACTION_NOTIFY_EXEC;
-      strlcpy(message->path, path, sizeof(message->path));
-      uint64_t val = vnode_pid_map_->get(vnode_id);
-      if (val) {
-        // pid_t is 32-bit, so pid is in upper 32 bits, ppid in lower.
-        message->pid = (val >> 32);
-        message->ppid = (val & ~0xFFFFFFFF00000000);
-      }
-      PostToLogQueue(message);
-      delete message;
-      return;
-    }
-  }
-
-  // Filter out modifications to locations that are definitely
-  // not useful or made by santad.
-  if (proc_selfpid() != client_pid_ &&
-      !strprefix(path, "/.") &&
-      !strprefix(path, "/dev")) {
-    auto message = NewMessage(nullptr);
-    strlcpy(message->path, path, sizeof(message->path));
-    if (new_path) strlcpy(message->newpath, new_path, sizeof(message->newpath));
-    proc_name(message->pid, message->pname, sizeof(message->pname));
-
-    switch (action) {
-      case KAUTH_FILEOP_CLOSE:
-        message->action = ACTION_NOTIFY_WRITE;
-        break;
-      case KAUTH_FILEOP_RENAME:
-        message->action = ACTION_NOTIFY_RENAME;
-        break;
-      case KAUTH_FILEOP_LINK:
-        message->action = ACTION_NOTIFY_LINK;
-        break;
-      case KAUTH_FILEOP_EXCHANGE:
-        message->action = ACTION_NOTIFY_EXCHANGE;
-        break;
-      case KAUTH_FILEOP_DELETE:
-        message->action = ACTION_NOTIFY_DELETE;
-        break;
-      default:
-        delete message;
-        return;
-    }
-
-    PostToLogQueue(message);
-    delete message;
-  }
-}
-
-#undef super
-
-extern "C" int fileop_scope_callback(
-    kauth_cred_t credential, void *idata, kauth_action_t action,
-    uintptr_t arg0, uintptr_t arg1, uintptr_t arg2, uintptr_t arg3) {
-  auto sdm = OSDynamicCast(
-      SantaDecisionManager, reinterpret_cast<OSObject *>(idata));
-
-  vnode_t vp = nullptr;
-  char *path = nullptr;
-  char *new_path = nullptr;
-
-  switch (action) {
-    case KAUTH_FILEOP_DELETE:
-    case KAUTH_FILEOP_EXEC:
-      vp = reinterpret_cast<vnode_t>(arg0);
-      if (vp && vnode_vtype(vp) != VREG) return KAUTH_RESULT_DEFER;
-      path = reinterpret_cast<char *>(arg1);
-      break;
-    case KAUTH_FILEOP_RENAME:
-    case KAUTH_FILEOP_EXCHANGE:
-    case KAUTH_FILEOP_LINK:
-      path = reinterpret_cast<char *>(arg0);
-      new_path = reinterpret_cast<char *>(arg1);
-      break;
-    default:
-      return KAUTH_RESULT_DEFER;
-  }
-
-  sdm->IncrementListenerInvocations();
-  sdm->FileOpCallback(action, vp, path, new_path);
-  sdm->DecrementListenerInvocations();
-
-  return KAUTH_RESULT_DEFER;
-}
-
-extern "C" int vnode_scope_callback(
-    kauth_cred_t credential, void *idata, kauth_action_t action,
-    uintptr_t arg0, uintptr_t arg1, uintptr_t arg2, uintptr_t arg3) {
-  if (action & KAUTH_VNODE_ACCESS || idata == nullptr) {
-    return KAUTH_RESULT_DEFER;
-  }
-
-  auto sdm = OSDynamicCast(
-      SantaDecisionManager, reinterpret_cast<OSObject *>(idata));
-
-  if (action & KAUTH_VNODE_EXECUTE) {
-    sdm->IncrementListenerInvocations();
-    int result = sdm->VnodeCallback(credential,
-                                    reinterpret_cast<vfs_context_t>(arg0),
-                                    reinterpret_cast<vnode_t>(arg1),
-                                    reinterpret_cast<int *>(arg3));
-    sdm->DecrementListenerInvocations();
-    return result;
-  } else if (action & KAUTH_VNODE_WRITE_DATA) {
-    vnode_t vp = reinterpret_cast<vnode_t>(arg1);
-    if (vnode_vtype(vp) != VREG) return KAUTH_RESULT_DEFER;
-    sdm->IncrementListenerInvocations();
-    char path[MAXPATHLEN];
-    int pathlen = MAXPATHLEN;
-    vn_getpath(vp, path, &pathlen);
-    sdm->FileOpCallback(KAUTH_FILEOP_CLOSE, vp, path, nullptr);
-    sdm->DecrementListenerInvocations();
-  }
-
-  return KAUTH_RESULT_DEFER;
-}

Source/santa-driver/SantaDriverClient.cc

@@ -1,278 +0,0 @@
-/// Copyright 2015 Google Inc. All rights reserved.
-///
-/// Licensed under the Apache License, Version 2.0 (the "License");
-/// you may not use this file except in compliance with the License.
-/// You may obtain a copy of the License at
-///
-///    http://www.apache.org/licenses/LICENSE-2.0
-///
-///    Unless required by applicable law or agreed to in writing, software
-///    distributed under the License is distributed on an "AS IS" BASIS,
-///    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-///    See the License for the specific language governing permissions and
-///    limitations under the License.
-
-#include "SantaDriverClient.h"
-
-#define super IOUserClient
-#define SantaDriverClient com_google_SantaDriverClient
-
-// The defines above can'be used in this function, must use the full names.
-OSDefineMetaClassAndStructors(com_google_SantaDriverClient, IOUserClient);
-
-#pragma mark Driver Management
-
-bool SantaDriverClient::initWithTask(
-    task_t owningTask, void *securityID, UInt32 type) {
-  if (clientHasPrivilege(
-          owningTask, kIOClientPrivilegeAdministrator) != KERN_SUCCESS) {
-    LOGW("Unprivileged client attempted to connect.");
-    return false;
-  }
-
-  if (!super::initWithTask(owningTask, securityID, type)) return false;
-
-  return true;
-}
-
-bool SantaDriverClient::start(IOService *provider) {
-  myProvider = OSDynamicCast(com_google_SantaDriver, provider);
-
-  if (!myProvider) return false;
-  if (!super::start(provider)) return false;
-
-  decisionManager = myProvider->GetDecisionManager();
-  if (!decisionManager) return false;
-
-  return true;
-}
-
-void SantaDriverClient::stop(IOService *provider) {
-  super::stop(provider);
-  myProvider = nullptr;
-  decisionManager = nullptr;
-}
-
-IOReturn SantaDriverClient::clientClose() {
-  decisionManager->DisconnectClient(true);
-  return terminate(kIOServiceSynchronous) ? kIOReturnSuccess : kIOReturnError;
-}
-
-bool SantaDriverClient::terminate(IOOptionBits options) {
-  decisionManager->DisconnectClient();
-  LOGI("Client disconnected.");
-
-  if (myProvider && myProvider->isOpen(this)) myProvider->close(this);
-
-  return super::terminate(options);
-}
-
-#pragma mark Fetching memory and data queue notifications
-
-IOReturn SantaDriverClient::registerNotificationPort(
-    mach_port_t port, UInt32 type, UInt32 ref) {
-  if (port == MACH_PORT_NULL) return kIOReturnError;
-
-  switch (type) {
-    case QUEUETYPE_DECISION:
-      decisionManager->SetDecisionPort(port);
-      break;
-    case QUEUETYPE_LOG:
-      decisionManager->SetLogPort(port);
-      break;
-    default:
-      return kIOReturnBadArgument;
-  }
-
-  return kIOReturnSuccess;
-}
-
-IOReturn SantaDriverClient::clientMemoryForType(
-    UInt32 type, IOOptionBits *options, IOMemoryDescriptor **memory) {
-  switch (type) {
-    case QUEUETYPE_DECISION:
-      *options = 0;
-      *memory = decisionManager->GetDecisionMemoryDescriptor();
-      decisionManager->ConnectClient(proc_selfpid());
-      break;
-    case QUEUETYPE_LOG:
-      *options = 0;
-      *memory = decisionManager->GetLogMemoryDescriptor();
-      break;
-    default:
-      return kIOReturnBadArgument;
-  }
-
-  (*memory)->retain();
-
-  return kIOReturnSuccess;
-}
-
-#pragma mark Callable Methods
-
-IOReturn SantaDriverClient::open() {
-  if (isInactive()) return kIOReturnNotAttached;
-
-  if (!myProvider->open(this)) {
-    LOGW("A second client tried to connect.");
-    return kIOReturnExclusiveAccess;
-  }
-
-  return kIOReturnSuccess;
-}
-
-IOReturn SantaDriverClient::static_open(
-    SantaDriverClient *target,
-    void *reference,
-    IOExternalMethodArguments *arguments) {
-  if (!target) return kIOReturnBadArgument;
-  return target->open();
-}
-
-IOReturn SantaDriverClient::allow_binary(const uint64_t vnode_id) {
-  decisionManager->AddToCache(vnode_id, ACTION_RESPOND_ALLOW);
-  return kIOReturnSuccess;
-}
-
-IOReturn SantaDriverClient::static_allow_binary(
-    SantaDriverClient *target,
-    void *reference,
-    IOExternalMethodArguments *arguments) {
-  if (!target) return kIOReturnBadArgument;
-  if (arguments->scalarInput == nullptr) return kIOReturnBadArgument;
-
-  return target->allow_binary(
-      static_cast<const uint64_t>(*arguments->scalarInput));
-}
-
-IOReturn SantaDriverClient::deny_binary(const uint64_t vnode_id) {
-  decisionManager->AddToCache(vnode_id, ACTION_RESPOND_DENY);
-  return kIOReturnSuccess;
-}
-
-IOReturn SantaDriverClient::static_deny_binary(
-    com_google_SantaDriverClient *target,
-    void *reference,
-    IOExternalMethodArguments *arguments) {
-  if (!target) return kIOReturnBadArgument;
-  if (arguments->scalarInput == nullptr) return kIOReturnBadArgument;
-
-  return target->deny_binary(
-      static_cast<const uint64_t>(*arguments->scalarInput));
-}
-
-IOReturn SantaDriverClient::clear_cache() {
-  decisionManager->ClearCache();
-  return kIOReturnSuccess;
-}
-
-IOReturn SantaDriverClient::static_clear_cache(
-    com_google_SantaDriverClient *target,
-    void *reference,
-    IOExternalMethodArguments *arguments) {
-  if (!target) return kIOReturnBadArgument;
-  return target->clear_cache();
-}
-
-IOReturn SantaDriverClient::cache_count(uint64_t *output) {
-  *output = decisionManager->CacheCount();
-  return kIOReturnSuccess;
-}
-
-IOReturn SantaDriverClient::static_cache_count(
-    com_google_SantaDriverClient *target,
-    void *reference,
-    IOExternalMethodArguments *arguments) {
-  if (!target) return kIOReturnBadArgument;
-  return target->cache_count(&(arguments->scalarOutput[0]));
-}
-
-IOReturn SantaDriverClient::check_cache(uint64_t vnode_id, uint64_t *output) {
-  *output = decisionManager->GetFromCache(vnode_id);
-  return kIOReturnSuccess;
-}
-
-IOReturn SantaDriverClient::static_check_cache(
-    com_google_SantaDriverClient *target,
-    void *reference,
-    IOExternalMethodArguments *arguments) {
-  if (!target) return kIOReturnBadArgument;
-  return target->check_cache(reinterpret_cast<uint64_t>(*arguments->scalarInput),
-                             &(arguments->scalarOutput[0]));
-}
-
-#pragma mark Method Resolution
-
-IOReturn SantaDriverClient::externalMethod(
-    UInt32 selector,
-    IOExternalMethodArguments *arguments,
-    IOExternalMethodDispatch *dispatch,
-    OSObject *target,
-    void *reference) {
-  ///  Array of methods callable by clients. The order of these must match the
-  ///  order of the items in SantaDriverMethods in SNTKernelCommon.h
-  static IOExternalMethodDispatch sMethods[kSantaUserClientNMethods] = {
-    {
-      reinterpret_cast<IOExternalMethodAction>(&SantaDriverClient::static_open),
-      0,  // input scalar
-      0,  // input struct
-      0,  // output scalar
-      0   // output struct
-    },
-    {
-      reinterpret_cast<IOExternalMethodAction>(
-          &SantaDriverClient::static_allow_binary),
-      1,
-      0,
-      0,
-      0
-    },
-    {
-      reinterpret_cast<IOExternalMethodAction>(
-          &SantaDriverClient::static_deny_binary),
-      1,
-      0,
-      0,
-      0
-    },
-    {
-      reinterpret_cast<IOExternalMethodAction>(
-          &SantaDriverClient::static_clear_cache),
-      0,
-      0,
-      0,
-      0
-    },
-    {
-      reinterpret_cast<IOExternalMethodAction>(
-          &SantaDriverClient::static_cache_count),
-      0,
-      0,
-      1,
-      0
-    },
-    {
-      reinterpret_cast<IOExternalMethodAction>(
-          &SantaDriverClient::static_check_cache),
-      1,
-      0,
-      1,
-      0
-    }
-  };
-
-  if (selector < static_cast<UInt32>(kSantaUserClientNMethods)) {
-    dispatch = &(sMethods[selector]);
-    if (!target) target = this;
-  } else {
-    return kIOReturnBadArgument;
-  }
-
-  return super::externalMethod(selector,
-                               arguments,
-                               dispatch,
-                               target,
-                               reference);
-}
-
-#undef super

Source/santa/BUILD

@@ -0,0 +1,60 @@
+licenses(["notice"])  # Apache 2.0
+
+exports_files([
+    "Resources/Images.xcassets/AppIcon.appiconset/santa-hat-icon-256.png",
+])
+
+load("@build_bazel_rules_apple//apple:macos.bzl", "macos_application")
+
+objc_library(
+    name = "SantaGUI_lib",
+    srcs = [
+        "SNTAboutWindowController.h",
+        "SNTAboutWindowController.m",
+        "SNTAccessibleTextField.h",
+        "SNTAccessibleTextField.m",
+        "SNTAppDelegate.h",
+        "SNTAppDelegate.m",
+        "SNTMessageWindow.h",
+        "SNTMessageWindow.m",
+        "SNTMessageWindowController.h",
+        "SNTMessageWindowController.m",
+        "SNTNotificationManager.h",
+        "SNTNotificationManager.m",
+        "main.m",
+    ],
+    data = [
+        "Resources/AboutWindow.xib",
+        "Resources/MessageWindow.xib",
+    ],
+    sdk_frameworks = [
+        "IOKit",
+        "SecurityInterface",
+        "SystemExtensions",
+    ],
+    deps = [
+        "//Source/common:SNTBlockMessage_SantaGUI",
+        "//Source/common:SNTConfigurator",
+        "//Source/common:SNTXPCControlInterface",
+        "//Source/common:SNTXPCNotifierInterface",
+        "@MOLCodesignChecker",
+        "@MOLXPCConnection",
+    ],
+)
+
+macos_application(
+    name = "Santa",
+    additional_contents = {
+        "//Source/santactl": "MacOS",
+        "//Source/santabundleservice": "MacOS",
+        "//Source/santad:com.google.santa.daemon": "Library/SystemExtensions",
+    },
+    app_icons = glob(["Resources/Images.xcassets/**"]),
+    bundle_id = "com.google.santa",
+    bundle_name = "Santa",
+    infoplists = ["Info.plist"],
+    minimum_os_version = "10.9",
+    version = "//:version",
+    visibility = ["//visibility:public"],
+    deps = [":SantaGUI_lib"],
+)

Source/santa/Info.plist

@@ -2,26 +2,30 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
+	<key>CFBundleExecutable</key>
+	<string>Santa</string>
+	<key>CFBundleIconFile</key>
+	<string>AppIcon</string>
+	<key>CFBundleIconName</key>
+	<string>AppIcon</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
 	<key>CFBundleInfoDictionaryVersion</key>
 	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>Santa</string>
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
-	<key>NSHumanReadableCopyright</key>
-	<string>Google, Inc.</string>
-	<key>CFBundleIdentifier</key>
-	<string>com.google.${PRODUCT_NAME:rfc1034identifier}GUI</string>
-	<key>CFBundleName</key>
-	<string>${PRODUCT_NAME}</string>
-	<key>CFBundleExecutable</key>
-	<string>${EXECUTABLE_NAME}</string>
-	<key>CFBundleVersion</key>
-	<string>TO.BE.FILLED</string>
 	<key>CFBundleShortVersionString</key>
-	<string>TO.BE.FILLED</string>
+	<string>$(MARKETING_VERSION)</string>
+	<key>CFBundleVersion</key>
+	<string>$(CURRENT_PROJECT_VERSION)</string>
 	<key>LSMinimumSystemVersion</key>
-	<string>${MACOSX_DEPLOYMENT_TARGET}</string>
+	<string>${MACOSX_VERSION_MIN}</string>
 	<key>LSUIElement</key>
 	<true/>
+	<key>NSHumanReadableCopyright</key>
+	<string>Google LLC.</string>
 	<key>NSPrincipalClass</key>
 	<string>NSApplication</string>
 </dict>

Source/santa/Resources/AboutWindow.xib

@@ -1,8 +1,8 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="3.0" toolsVersion="6254" systemVersion="14E46" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none" useAutolayout="YES">
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="3.0" toolsVersion="14460.31" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none" useAutolayout="YES">
     <dependencies>
-        <deployment identifier="macosx"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="6254"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="14460.31"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
     </dependencies>
     <objects>
         <customObject id="-2" userLabel="File's Owner" customClass="SNTAboutWindowController">
@@ -13,10 +13,10 @@
         </customObject>
         <customObject id="-1" userLabel="First Responder" customClass="FirstResponder"/>
         <customObject id="-3" userLabel="Application" customClass="NSObject"/>
-        <window title="Santa" allowsToolTipsWhenApplicationIsInactive="NO" autorecalculatesKeyViewLoop="NO" oneShot="NO" releasedWhenClosed="NO" visibleAtLaunch="NO" animationBehavior="default" id="F0z-JX-Cv5">
+        <window title="Santa" allowsToolTipsWhenApplicationIsInactive="NO" autorecalculatesKeyViewLoop="NO" releasedWhenClosed="NO" visibleAtLaunch="NO" animationBehavior="default" id="F0z-JX-Cv5">
             <windowStyleMask key="styleMask" titled="YES" closable="YES"/>
             <rect key="contentRect" x="196" y="240" width="480" height="200"/>
-            <rect key="screenRect" x="0.0" y="0.0" width="2560" height="1577"/>
+            <rect key="screenRect" x="0.0" y="0.0" width="3840" height="1577"/>
             <view key="contentView" id="se5-gp-TjO">
                 <rect key="frame" x="0.0" y="0.0" width="480" height="200"/>
                 <autoresizingMask key="autoresizingMask"/>
@@ -29,12 +29,13 @@
                         </constraints>
                         <textFieldCell key="cell" scrollable="YES" lineBreakMode="clipping" sendsActionOnEndEditing="YES" title="Santa" id="VVj-gU-bzy">
                             <font key="font" size="34" name="HelveticaNeue-UltraLight"/>
-                            <color key="textColor" red="0.1869618941" green="0.1869618941" blue="0.1869618941" alpha="1" colorSpace="calibratedRGB"/>
-                            <color key="backgroundColor" name="controlColor" catalog="System" colorSpace="catalog"/>
+                            <color key="textColor" name="labelColor" catalog="System" colorSpace="catalog"/>
+                            <color key="backgroundColor" name="textBackgroundColor" catalog="System" colorSpace="catalog"/>
                         </textFieldCell>
                     </textField>
                     <textField verticalHuggingPriority="750" horizontalCompressionResistancePriority="250" fixedFrame="YES" setsMaxLayoutWidthAtFirstLayout="YES" translatesAutoresizingMaskIntoConstraints="NO" id="uh6-q0-RzL">
                         <rect key="frame" x="18" y="65" width="444" height="60"/>
+                        <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
                         <textFieldCell key="cell" sendsActionOnEndEditing="YES" alignment="center" id="CcT-ul-1eA">
                             <font key="font" metaFont="system"/>
                             <string key="title">Santa is an application whitelisting system for macOS.