mDNSShared/mDNSDebug.c

   1 /* -*- Mode: C; tab-width: 4 -*-
   2  *
   3  * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
   4  *
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at
   8  *
   9  *     http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16
  17     File:               mDNSDebug.c
  18
  19     Contains:   Implementation of debugging utilities. Requires a POSIX environment.
  20
  21     Version:    1.0
  22
  23  */
  24
  25 #include "mDNSDebug.h"
  26
  27 #include <stdio.h>
  28
  29 #if defined(WIN32) || defined(EFI32) || defined(EFI64) || defined(EFIX64)
  30 // Need to add Windows/EFI syslog support here
  31 #define LOG_PID 0x01
  32 #define LOG_CONS 0x02
  33 #define LOG_PERROR 0x20
  34 #else
  35 #include <syslog.h>
  36 #endif
  37
  38 #include "mDNSEmbeddedAPI.h"
  39
  40 mDNSexport int mDNS_LoggingEnabled       = 0;
  41 mDNSexport int mDNS_PacketLoggingEnabled = 0;
  42 mDNSexport int mDNS_McastLoggingEnabled  = 0;
  43 mDNSexport int mDNS_McastTracingEnabled  = 0;
  44
  45 #if MDNS_DEBUGMSGS
  46 mDNSexport int mDNS_DebugMode = mDNStrue;
  47 #else
  48 mDNSexport int mDNS_DebugMode = mDNSfalse;
  49 #endif
  50
  51 // Note, this uses mDNS_vsnprintf instead of standard "vsnprintf", because mDNS_vsnprintf knows
  52 // how to print special data types like IP addresses and length-prefixed domain names
  53 #if MDNS_DEBUGMSGS > 1
  54 mDNSexport void verbosedebugf_(const char *format, ...)
  55 {
  56     char buffer[512];
  57     va_list ptr;
  58     va_start(ptr,format);
  59     buffer[mDNS_vsnprintf(buffer, sizeof(buffer), format, ptr)] = 0;
  60     va_end(ptr);
  61     mDNSPlatformWriteDebugMsg(buffer);
  62 }
  63 #endif
  64
  65 // Log message with default "mDNSResponder" ident string at the start
  66 mDNSlocal void LogMsgWithLevelv(mDNSLogLevel_t logLevel, const char *format, va_list ptr)
  67 {
  68     char buffer[512];
  69     buffer[mDNS_vsnprintf((char *)buffer, sizeof(buffer), format, ptr)] = 0;
  70     mDNSPlatformWriteLogMsg(ProgramName, buffer, logLevel);
  71 }
  72
  73 #define LOG_HELPER_BODY(L) \
  74     { \
  75         va_list ptr; \
  76         va_start(ptr,format); \
  77         LogMsgWithLevelv(L, format, ptr); \
  78         va_end(ptr); \
  79     }
  80
  81 // see mDNSDebug.h
  82 #if !MDNS_HAS_VA_ARG_MACROS
  83 void LogMsg_(const char *format, ...)       LOG_HELPER_BODY(MDNS_LOG_MSG)
  84 void LogOperation_(const char *format, ...) LOG_HELPER_BODY(MDNS_LOG_OPERATION)
  85 void LogSPS_(const char *format, ...)       LOG_HELPER_BODY(MDNS_LOG_SPS)
  86 void LogInfo_(const char *format, ...)      LOG_HELPER_BODY(MDNS_LOG_INFO)
  87 #endif
  88
  89 #if MDNS_DEBUGMSGS
  90 void debugf_(const char *format, ...)       LOG_HELPER_BODY(MDNS_LOG_DEBUG)
  91 #endif
  92
  93 // Log message with default "mDNSResponder" ident string at the start
  94 mDNSexport void LogMsgWithLevel(mDNSLogLevel_t logLevel, const char *format, ...)
  95 LOG_HELPER_BODY(logLevel)