xref: /aosp_15_r20/external/mdnsresponder/mDNSShared/mDNSDebug.c (revision 48a54d368dc4fa860885eef7b70b6c53499e7c25)

/* -*- Mode: C; tab-width: 4 -*-
 *
 * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.

 	File:		mDNSDebug.c

 	Contains:	Implementation of debugging utilities. Requires a POSIX environment.

 	Version:	1.0

 */

#include "mDNSDebug.h"

#include <stdio.h>

#if defined(WIN32) || defined(EFI32) || defined(EFI64) || defined(EFIX64)
// Need to add Windows/EFI syslog support here
#define LOG_PID 0x01
#define LOG_CONS 0x02
#define LOG_PERROR 0x20
#else
#include <syslog.h>
#endif

#include "mDNSEmbeddedAPI.h"

mDNSexport int mDNS_LoggingEnabled = 0;
mDNSexport int mDNS_PacketLoggingEnabled = 0;

#if MDNS_DEBUGMSGS && !defined(__ANDROID__)
mDNSexport int mDNS_DebugMode = mDNStrue;
#else
mDNSexport int mDNS_DebugMode = mDNSfalse;
#endif

// Note, this uses mDNS_vsnprintf instead of standard "vsnprintf", because mDNS_vsnprintf knows
// how to print special data types like IP addresses and length-prefixed domain names
#if MDNS_DEBUGMSGS > 1
mDNSexport void verbosedebugf_(const char *format, ...)
	{
	char buffer[512];
	va_list ptr;
	va_start(ptr,format);
	buffer[mDNS_vsnprintf(buffer, sizeof(buffer), format, ptr)] = 0;
	va_end(ptr);
	mDNSPlatformWriteDebugMsg(buffer);
	}
#endif

// Log message with default "mDNSResponder" ident string at the start
mDNSlocal void LogMsgWithLevelv(mDNSLogLevel_t logLevel, const char *format, va_list ptr)
	{
	char buffer[512];
	buffer[mDNS_vsnprintf((char *)buffer, sizeof(buffer), format, ptr)] = 0;
	mDNSPlatformWriteLogMsg(ProgramName, buffer, logLevel);
	}

#define LOG_HELPER_BODY(L) \
	{ \
	va_list ptr; \
	va_start(ptr,format); \
	LogMsgWithLevelv(L, format, ptr); \
	va_end(ptr); \
	}

// see mDNSDebug.h
#if !MDNS_HAS_VA_ARG_MACROS
void LogMsg_(const char *format, ...)       LOG_HELPER_BODY(MDNS_LOG_MSG)
void LogOperation_(const char *format, ...) LOG_HELPER_BODY(MDNS_LOG_OPERATION)
void LogSPS_(const char *format, ...)       LOG_HELPER_BODY(MDNS_LOG_SPS)
void LogInfo_(const char *format, ...)      LOG_HELPER_BODY(MDNS_LOG_INFO)
#endif

#if MDNS_DEBUGMSGS
void debugf_(const char *format, ...)       LOG_HELPER_BODY(MDNS_LOG_DEBUG)
#endif

// Log message with default "mDNSResponder" ident string at the start
mDNSexport void LogMsgWithLevel(mDNSLogLevel_t logLevel, const char *format, ...)
	LOG_HELPER_BODY(logLevel)