chore: cherry-pick 62142d222a80 from chromium (#33186)

* chore: cherry-pick 62142d222a80 from chromium

* chore: update patches

Co-authored-by: PatchUp <73610968+patchup[bot]@users.noreply.github.com>
This commit is contained in:
Jeremy Rose
2022-03-08 13:14:39 -08:00
committed by GitHub
parent 7205c97421
commit cbf5a75572
2 changed files with 152 additions and 0 deletions

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@@ -128,3 +128,4 @@ m98_fs_fix_fileutil_lifetime_issue.patch
cleanup_pausablecriptexecutor_usage.patch
fix_don_t_restore_maximized_windows_when_calling_showinactive.patch
cherry-pick-6b2643846ae3.patch
cherry-pick-62142d222a80.patch

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@@ -0,0 +1,151 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Ken Rockot <rockot@google.com>
Date: Thu, 24 Feb 2022 15:13:13 +0000
Subject: Validate message headers sooner
M96 merge issues:
- multiplex_router.h: conflict in removed lines because of
differences in comments above header_validator_
- connector.h: conflicting includes
Message header validation has been tied to interface message dispatch,
but not all mojo::Message consumers are interface bindings.
mojo::Connector is a more general-purpose entry point through which
incoming messages are received and transformed into mojo::Message
objects. Blink's MessagePort implementation uses Connector directly to
transmit and receive raw serialized object data.
This change moves MessageHeaderValidator ownership into Connector and
always applies its validation immediately after reading a message from
the pipe, thereby ensuring that all mojo::Message objects used in
production have validated headers before use.
(cherry picked from commit 8d5bc69146505785ce299c490e35e3f3ef19f69c)
Fixed: 1281908
Change-Id: Ie0e251ab04681a4fd4b849d82c247e0ed800dc04
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3462461
Commit-Queue: Ken Rockot <rockot@google.com>
Cr-Original-Commit-Position: refs/heads/main@{#971263}
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3483815
Reviewed-by: Victor-Gabriel Savu <vsavu@google.com>
Owners-Override: Victor-Gabriel Savu <vsavu@google.com>
Commit-Queue: Roger Felipe Zanoni da Silva <rzanoni@google.com>
Cr-Commit-Position: refs/branch-heads/4664@{#1505}
Cr-Branched-From: 24dc4ee75e01a29d390d43c9c264372a169273a7-refs/heads/main@{#929512}
diff --git a/mojo/public/cpp/bindings/connector.h b/mojo/public/cpp/bindings/connector.h
index c788d5adaf4c3fbbd289068e16ff44ef573b44fe..6076d73084daa8f0817097ee31c70e4be50a73a7 100644
--- a/mojo/public/cpp/bindings/connector.h
+++ b/mojo/public/cpp/bindings/connector.h
@@ -18,6 +18,7 @@
#include "base/sequenced_task_runner.h"
#include "mojo/public/cpp/bindings/connection_group.h"
#include "mojo/public/cpp/bindings/message.h"
+#include "mojo/public/cpp/bindings/message_header_validator.h"
#include "mojo/public/cpp/bindings/sync_handle_watcher.h"
#include "mojo/public/cpp/system/core.h"
#include "mojo/public/cpp/system/handle_signal_tracker.h"
@@ -348,6 +349,8 @@ class COMPONENT_EXPORT(MOJO_CPP_BINDINGS) Connector : public MessageReceiver {
// The number of pending tasks for |CallDispatchNextMessageFromPipe|.
size_t num_pending_dispatch_tasks_ = 0;
+ MessageHeaderValidator header_validator_;
+
#if defined(ENABLE_IPC_FUZZER)
std::unique_ptr<MessageReceiver> message_dumper_;
#endif
diff --git a/mojo/public/cpp/bindings/lib/connector.cc b/mojo/public/cpp/bindings/lib/connector.cc
index c1d111c126a4f10af6a4ba6bc78ab1fa5c771853..0af91f3ab069690b041c189bbb5946c1d3d59ddc 100644
--- a/mojo/public/cpp/bindings/lib/connector.cc
+++ b/mojo/public/cpp/bindings/lib/connector.cc
@@ -19,6 +19,7 @@
#include "base/rand_util.h"
#include "base/run_loop.h"
#include "base/strings/strcat.h"
+#include "base/strings/string_util.h"
#include "base/synchronization/lock.h"
#include "base/task/current_thread.h"
#include "base/threading/sequence_local_storage_slot.h"
@@ -155,7 +156,11 @@ Connector::Connector(ScopedMessagePipeHandle message_pipe,
force_immediate_dispatch_(!EnableTaskPerMessage()),
outgoing_serialization_mode_(g_default_outgoing_serialization_mode),
incoming_serialization_mode_(g_default_incoming_serialization_mode),
- interface_name_(interface_name) {
+ interface_name_(interface_name),
+ header_validator_(
+ base::JoinString({interface_name ? interface_name : "Generic",
+ "MessageHeaderValidator"},
+ "")) {
if (config == MULTI_THREADED_SEND)
lock_.emplace();
@@ -495,6 +500,7 @@ MojoResult Connector::ReadMessage(Message* message) {
return result;
*message = Message::CreateFromMessageHandle(&handle);
+
if (message->IsNull()) {
// Even if the read was successful, the Message may still be null if there
// was a problem extracting handles from it. We treat this essentially as
@@ -510,6 +516,10 @@ MojoResult Connector::ReadMessage(Message* message) {
return MOJO_RESULT_ABORTED;
}
+ if (!header_validator_.Accept(message)) {
+ return MOJO_RESULT_ABORTED;
+ }
+
return MOJO_RESULT_OK;
}
diff --git a/mojo/public/cpp/bindings/lib/multiplex_router.cc b/mojo/public/cpp/bindings/lib/multiplex_router.cc
index e62252a1399731a4ee1bfe47fbfaac0a6a397605..ad7a7000eb96a45741bc811a47cd633ff030d056 100644
--- a/mojo/public/cpp/bindings/lib/multiplex_router.cc
+++ b/mojo/public/cpp/bindings/lib/multiplex_router.cc
@@ -23,7 +23,6 @@
#include "mojo/public/cpp/bindings/interface_endpoint_controller.h"
#include "mojo/public/cpp/bindings/lib/may_auto_lock.h"
#include "mojo/public/cpp/bindings/lib/message_quota_checker.h"
-#include "mojo/public/cpp/bindings/message_header_validator.h"
#include "mojo/public/cpp/bindings/sequence_local_sync_event_watcher.h"
namespace mojo {
@@ -391,14 +390,7 @@ MultiplexRouter::MultiplexRouter(
if (quota_checker)
connector_.SetMessageQuotaChecker(std::move(quota_checker));
- std::unique_ptr<MessageHeaderValidator> header_validator =
- std::make_unique<MessageHeaderValidator>();
- header_validator_ = header_validator.get();
- dispatcher_.SetValidator(std::move(header_validator));
-
if (primary_interface_name) {
- header_validator_->SetDescription(base::JoinString(
- {primary_interface_name, "[primary] MessageHeaderValidator"}, " "));
control_message_handler_.SetDescription(base::JoinString(
{primary_interface_name, "[primary] PipeControlMessageHandler"}, " "));
}
diff --git a/mojo/public/cpp/bindings/lib/multiplex_router.h b/mojo/public/cpp/bindings/lib/multiplex_router.h
index df94c8a6e9dd2d28a7370d6ec9ce98bc9ecc7b8a..c20d1966206819044d10dfb133086b656abfefa6 100644
--- a/mojo/public/cpp/bindings/lib/multiplex_router.h
+++ b/mojo/public/cpp/bindings/lib/multiplex_router.h
@@ -38,7 +38,6 @@ class SequencedTaskRunner;
namespace mojo {
class AsyncFlusher;
-class MessageHeaderValidator;
class PendingFlush;
namespace internal {
@@ -304,9 +303,6 @@ class COMPONENT_EXPORT(MOJO_CPP_BINDINGS) MultiplexRouter
scoped_refptr<base::SequencedTaskRunner> task_runner_;
- // Owned by |dispatcher_| below.
- MessageHeaderValidator* header_validator_ = nullptr;
-
MessageDispatcher dispatcher_;
Connector connector_;