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/*
* uhub - A tiny ADC p2p connection hub
* Copyright (C) 2007-2009, Jan Vidar Krey
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "uhub.h"
#include <locale.h>
#ifndef WIN32
#include <syslog.h>
static int use_syslog = 0;
#endif
static int verbosity = 4;
static FILE* logfile = NULL;
#ifdef MEMORY_DEBUG
static FILE* memfile = NULL;
#define MEMORY_DEBUG_FILE "memlog.txt"
#endif
#ifdef NETWORK_DUMP_DEBUG
#define NETWORK_DUMP_FILE "netdump.log"
static FILE* netdump = NULL;
#endif
static const char* prefixes[] =
{
"FATAL",
"ERROR",
"WARN",
"USER",
"INFO",
"DEBUG",
"TRACE",
"DUMP",
"MEM",
"PROTO",
"PLUGIN",
0
};
void hub_log_initialize(const char* file, int syslog)
{
setlocale(LC_ALL, "C");
#ifdef MEMORY_DEBUG
memfile = fopen(MEMORY_DEBUG_FILE, "w");
if (!memfile)
{
fprintf(stderr, "Unable to create " MEMORY_DEBUG_FILE " for logging memory allocations\n");
return;
}
#endif
#ifdef NETWORK_DUMP_DEBUG
netdump = fopen(NETWORK_DUMP_FILE, "w");
if (!netdump)
{
fprintf(stderr, "Unable to create " NETWORK_DUMP_FILE " for logging network traffic\n");
return;
}
#endif
#ifndef WIN32
if (syslog)
{
use_syslog = 1;
openlog("uhub", LOG_PID, LOG_USER);
}
#endif
if (!file)
{
logfile = stderr;
return;
}
logfile = fopen(file, "a");
if (!logfile)
{
logfile = stderr;
return;
}
}
void hub_log_shutdown()
{
if (logfile && logfile != stderr)
{
fclose(logfile);
logfile = NULL;
}
#ifdef MEMORY_DEBUG
if (memfile)
{
fclose(memfile);
memfile = NULL;
}
#endif
#ifdef NETWORK_DUMP_DEBUG
if (netdump)
{
fclose(netdump);
netdump = NULL;
}
#endif
#ifndef WIN32
if (use_syslog)
{
use_syslog = 0;
closelog();
}
#endif
}
void hub_set_log_verbosity(int verb)
{
verbosity = verb;
}
void hub_log(int log_verbosity, const char *format, ...)
{
static char logmsg[1024];
static char timestamp[32];
struct tm *tmp;
time_t t;
va_list args;
#ifdef MEMORY_DEBUG
if (memfile && log_verbosity == log_memory)
{
va_start(args, format);
vsnprintf(logmsg, 1024, format, args);
va_end(args);
fprintf(memfile, "%s\n", logmsg);
fflush(memfile);
return;
}
#endif
#ifdef NETWORK_DUMP_DEBUG
if (netdump && log_verbosity == log_protocol)
{
va_start(args, format);
vsnprintf(logmsg, 1024, format, args);
va_end(args);
fprintf(netdump, "%s\n", logmsg);
fflush(netdump);
return;
}
#endif
if (log_verbosity < verbosity)
{
t = time(NULL);
tmp = localtime(&t);
strftime(timestamp, 32, "%Y-%m-%d %H:%M:%S", tmp);
va_start(args, format);
vsnprintf(logmsg, 1024, format, args);
va_end(args);
if (logfile)
{
fprintf(logfile, "%s %6s: %s\n", timestamp, prefixes[log_verbosity], logmsg);
fflush(logfile);
}
else
{
fprintf(stderr, "%s %6s: %s\n", timestamp, prefixes[log_verbosity], logmsg);
}
}
#ifndef WIN32
if (use_syslog)
{
int level = 0;
if (verbosity < log_info)
return;
va_start(args, format);
vsnprintf(logmsg, 1024, format, args);
va_end(args);
switch (log_verbosity)
{
case log_fatal: level = LOG_CRIT; break;
case log_error: level = LOG_ERR; break;
case log_warning: level = LOG_WARNING; break;
case log_user: level = LOG_INFO | LOG_AUTH; break;
case log_info: level = LOG_INFO; break;
case log_debug: level = LOG_DEBUG; break;
default:
level = 0;
break;
}
if (level == 0)
return;
level |= (LOG_USER | LOG_DAEMON);
syslog(level, "%s", logmsg);
}
#endif
}
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