mirror of
https://github.com/google/santa.git
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67 lines
2.2 KiB
Objective-C
67 lines
2.2 KiB
Objective-C
/// Copyright 2015 Google Inc. All rights reserved.
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///
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/// Licensed under the Apache License, Version 2.0 (the "License");
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/// you may not use this file except in compliance with the License.
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/// You may obtain a copy of the License at
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///
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/// http://www.apache.org/licenses/LICENSE-2.0
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///
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/// Unless required by applicable law or agreed to in writing, software
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/// distributed under the License is distributed on an "AS IS" BASIS,
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/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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/// See the License for the specific language governing permissions and
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/// limitations under the License.
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#import "SNTLogging.h"
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#import <sys/syslog.h>
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#ifdef DEBUG
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static int logLevel = LOG_LEVEL_DEBUG;
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#else
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static int logLevel = LOG_LEVEL_INFO; // default to info
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#endif
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void logMessage(int level, FILE *destination, NSString *format, ...) {
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static BOOL useSyslog = NO;
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static NSString *binaryName;
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static dispatch_once_t pred;
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dispatch_once(&pred, ^{
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binaryName = [[NSProcessInfo processInfo] processName];
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// If debug logging is enabled, the process must be restarted.
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if ([[[NSProcessInfo processInfo] arguments] containsObject:@"--debug"]) {
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logLevel = LOG_LEVEL_DEBUG;
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}
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// If requested, redirect output to syslog.
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if ([[[NSProcessInfo processInfo] arguments] containsObject:@"--syslog"] ||
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[binaryName isEqual:@"santad"]) {
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useSyslog = YES;
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}
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});
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if (logLevel < level) return;
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va_list args;
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va_start(args, format);
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NSString *s = [[NSString alloc] initWithFormat:format arguments:args];
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va_end(args);
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if (useSyslog) {
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NSString *levelName;
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int syslogLevel = LOG_DEBUG;
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switch (level) {
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case LOG_LEVEL_ERROR: levelName = @"E"; syslogLevel = LOG_ERR; break;
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case LOG_LEVEL_WARN: levelName = @"W"; syslogLevel = LOG_WARNING; break;
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case LOG_LEVEL_INFO: levelName = @"I"; syslogLevel = LOG_INFO; break;
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case LOG_LEVEL_DEBUG: levelName = @"D"; syslogLevel = LOG_DEBUG; break;
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}
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syslog(syslogLevel, "%s\n",
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[[NSString stringWithFormat:@"%@ %@: %@", levelName, binaryName, s] UTF8String]);
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} else {
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fprintf(destination, "%s\n", [s UTF8String]);
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}
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}
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