122 lines
3.7 KiB
Mathematica
122 lines
3.7 KiB
Mathematica
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// Software License Agreement (BSD License)
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//
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// Copyright (c) 2010-2016, Deusty, LLC
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// All rights reserved.
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//
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// Redistribution and use of this software in source and binary forms,
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// with or without modification, are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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//
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// * Neither the name of Deusty nor the names of its contributors may be used
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// to endorse or promote products derived from this software without specific
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// prior written permission of Deusty, LLC.
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#import "DDASLLogger.h"
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#import <asl.h>
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#if !__has_feature(objc_arc)
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#error This file must be compiled with ARC. Use -fobjc-arc flag (or convert project to ARC).
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#endif
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const char* const kDDASLKeyDDLog = "DDLog";
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const char* const kDDASLDDLogValue = "1";
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static DDASLLogger *sharedInstance;
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@interface DDASLLogger () {
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aslclient _client;
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}
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@end
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@implementation DDASLLogger
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+ (instancetype)sharedInstance {
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static dispatch_once_t DDASLLoggerOnceToken;
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dispatch_once(&DDASLLoggerOnceToken, ^{
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sharedInstance = [[[self class] alloc] init];
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});
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return sharedInstance;
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}
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- (instancetype)init {
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if (sharedInstance != nil) {
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return nil;
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}
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if ((self = [super init])) {
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// A default asl client is provided for the main thread,
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// but background threads need to create their own client.
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_client = asl_open(NULL, "com.apple.console", 0);
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}
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return self;
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}
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- (void)logMessage:(DDLogMessage *)logMessage {
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// Skip captured log messages
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if ([logMessage->_fileName isEqualToString:@"DDASLLogCapture"]) {
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return;
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}
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NSString * message = _logFormatter ? [_logFormatter formatLogMessage:logMessage] : logMessage->_message;
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if (message) {
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const char *msg = [message UTF8String];
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size_t aslLogLevel;
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switch (logMessage->_flag) {
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// Note: By default ASL will filter anything above level 5 (Notice).
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// So our mappings shouldn't go above that level.
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case DDLogFlagError : aslLogLevel = ASL_LEVEL_CRIT; break;
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case DDLogFlagWarning : aslLogLevel = ASL_LEVEL_ERR; break;
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case DDLogFlagInfo : aslLogLevel = ASL_LEVEL_WARNING; break; // Regular NSLog's level
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case DDLogFlagDebug :
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case DDLogFlagVerbose :
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default : aslLogLevel = ASL_LEVEL_NOTICE; break;
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}
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static char const *const level_strings[] = { "0", "1", "2", "3", "4", "5", "6", "7" };
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// NSLog uses the current euid to set the ASL_KEY_READ_UID.
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uid_t const readUID = geteuid();
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char readUIDString[16];
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#ifndef NS_BLOCK_ASSERTIONS
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size_t l = snprintf(readUIDString, sizeof(readUIDString), "%d", readUID);
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#else
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snprintf(readUIDString, sizeof(readUIDString), "%d", readUID);
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#endif
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NSAssert(l < sizeof(readUIDString),
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@"Formatted euid is too long.");
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NSAssert(aslLogLevel < (sizeof(level_strings) / sizeof(level_strings[0])),
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@"Unhandled ASL log level.");
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aslmsg m = asl_new(ASL_TYPE_MSG);
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if (m != NULL) {
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if (asl_set(m, ASL_KEY_LEVEL, level_strings[aslLogLevel]) == 0 &&
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asl_set(m, ASL_KEY_MSG, msg) == 0 &&
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asl_set(m, ASL_KEY_READ_UID, readUIDString) == 0 &&
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asl_set(m, kDDASLKeyDDLog, kDDASLDDLogValue) == 0) {
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asl_send(_client, m);
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}
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asl_free(m);
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}
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//TODO handle asl_* failures non-silently?
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}
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}
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- (NSString *)loggerName {
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return @"cocoa.lumberjack.aslLogger";
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}
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@end
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