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
  43 #if MDNS_DEBUGMSGS
  44 mDNSexport int mDNS_DebugMode = mDNStrue;
  45 #else
  46 mDNSexport int mDNS_DebugMode = mDNSfalse;
  47 #endif
  48
  49 // Note, this uses mDNS_vsnprintf instead of standard "vsnprintf", because mDNS_vsnprintf knows
  50 // how to print special data types like IP addresses and length-prefixed domain names
  51 #if MDNS_DEBUGMSGS > 1
  52 mDNSexport void verbosedebugf_(const char *format, ...)
  53         {
  54         char buffer[512];
  55         va_list ptr;
  56         va_start(ptr,format);
  57         buffer[mDNS_vsnprintf(buffer, sizeof(buffer), format, ptr)] = 0;
  58         va_end(ptr);
  59         mDNSPlatformWriteDebugMsg(buffer);
  60         }
  61 #endif
  62
  63 // Log message with default "mDNSResponder" ident string at the start
  64 mDNSlocal void LogMsgWithLevelv(mDNSLogLevel_t logLevel, const char *format, va_list ptr)
  65         {
  66         char buffer[512];
  67         buffer[mDNS_vsnprintf((char *)buffer, sizeof(buffer), format, ptr)] = 0;
  68         mDNSPlatformWriteLogMsg(ProgramName, buffer, logLevel);
  69         }
  70
  71 #define LOG_HELPER_BODY(L) \
  72         { \
  73         va_list ptr; \
  74         va_start(ptr,format); \
  75         LogMsgWithLevelv(L, format, ptr); \
  76         va_end(ptr); \
  77         }
  78
  79 // see mDNSDebug.h
  80 #if !MDNS_HAS_VA_ARG_MACROS
  81 void LogMsg_(const char *format, ...)       LOG_HELPER_BODY(MDNS_LOG_MSG)
  82 void LogOperation_(const char *format, ...) LOG_HELPER_BODY(MDNS_LOG_OPERATION)
  83 void LogSPS_(const char *format, ...)       LOG_HELPER_BODY(MDNS_LOG_SPS)
  84 void LogInfo_(const char *format, ...)      LOG_HELPER_BODY(MDNS_LOG_INFO)
  85 #endif
  86
  87 #if MDNS_DEBUGMSGS
  88 void debugf_(const char *format, ...)       LOG_HELPER_BODY(MDNS_LOG_DEBUG)
  89 #endif
  90
  91 // Log message with default "mDNSResponder" ident string at the start
  92 mDNSexport void LogMsgWithLevel(mDNSLogLevel_t logLevel, const char *format, ...)
  93         LOG_HELPER_BODY(logLevel)