release/src/router/igmpproxy/src/syslog.c

   1 /*
   2 **  igmpproxy - IGMP proxy based multicast router
   3 **  Copyright (C) 2005 Johnny Egeland <johnny@rlo.org>
   4 **
   5 **  This program is free software; you can redistribute it and/or modify
   6 **  it under the terms of the GNU General Public License as published by
   7 **  the Free Software Foundation; either version 2 of the License, or
   8 **  (at your option) any later version.
   9 **
  10 **  This program is distributed in the hope that it will be useful,
  11 **  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 **  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 **  GNU General Public License for more details.
  14 **
  15 **  You should have received a copy of the GNU General Public License
  16 **  along with this program; if not, write to the Free Software
  17 **  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18 **
  19 **----------------------------------------------------------------------------
  20 **
  21 **  This software is derived work from the following software. The original
  22 **  source code has been modified from it's original state by the author
  23 **  of igmpproxy.
  24 **
  25 **  smcroute 0.92 - Copyright (C) 2001 Carsten Schill <carsten@cschill.de>
  26 **  - Licensed under the GNU General Public License, version 2
  27 **
  28 **  mrouted 3.9-beta3 - COPYRIGHT 1989 by The Board of Trustees of
  29 **  Leland Stanford Junior University.
  30 **  - Original license can be found in the Stanford.txt file.
  31 **
  32 */
  33
  34 #include "igmpproxy.h"
  35
  36 int LogLevel = LOG_ERR;
  37 bool Log2Stderr = false;
  38
  39 void my_log( int Severity, int Errno, const char *FmtSt, ... )
  40 {
  41     char LogMsg[ 128 ];
  42
  43     va_list ArgPt;
  44     unsigned Ln;
  45     va_start( ArgPt, FmtSt );
  46     Ln = vsnprintf( LogMsg, sizeof( LogMsg ), FmtSt, ArgPt );
  47     if( Errno > 0 )
  48         snprintf( LogMsg + Ln, sizeof( LogMsg ) - Ln,
  49                 "; Errno(%d): %s", Errno, strerror(Errno) );
  50     va_end( ArgPt );
  51
  52     if (Severity <= LogLevel) {
  53         if (Log2Stderr)
  54             fprintf(stderr, "%s\n", LogMsg);
  55         else {
  56             syslog(Severity, "%s", LogMsg);
  57         }
  58     }
  59
  60     if( Severity <= LOG_ERR )
  61         exit( -1 );
  62 }