lib/syserr.c

   1 /*
   2  * Syslog functions.
   3  * Copyright (C) 2003, 2004 Mondru AB.
   4  *
   5  * The contents of this file may be used under the terms of the GNU
   6  * General Public License Version 2, provided that the above copyright
   7  * notice and this permission notice is included in all copies or
   8  * substantial portions of the software.
   9  *
  10  */
  11
  12 #include <stdarg.h>
  13 #include <sys/socket.h>
  14 #include <netinet/in.h>
  15 #include <stdio.h>
  16 #include <syslog.h>
  17 #include <string.h>
  18 #include <netinet/in.h>
  19 #include <arpa/inet.h>
  20
  21 #include "syserr.h"
  22
  23
  24 void sys_err(int pri, char *fn, int ln, int en, char *fmt, ...) {
  25   va_list args;
  26   char buf[SYSERR_MSGSIZE];
  27
  28   va_start(args, fmt);
  29   vsnprintf(buf, SYSERR_MSGSIZE, fmt, args);
  30   va_end(args);
  31   buf[SYSERR_MSGSIZE-1] = 0; /* Make sure it is null terminated */
  32   if (en)
  33     syslog(pri, "%s: %d: %d (%s) %s", fn, ln, en, strerror(en), buf);
  34   else
  35     syslog(pri, "%s: %d: %s", fn, ln, buf);
  36 }
  37
  38 void sys_errpack(int pri, char *fn, int ln, int en, struct sockaddr_in *peer,
  39                  void *pack, unsigned len, char *fmt, ...) {
  40
  41   va_list args;
  42   char buf[SYSERR_MSGSIZE];
  43   char buf2[SYSERR_MSGSIZE];
  44   unsigned int n;
  45   int pos;
  46
  47   va_start(args, fmt);
  48   vsnprintf(buf, SYSERR_MSGSIZE, fmt, args);
  49   va_end(args);
  50   buf[SYSERR_MSGSIZE-1] = 0;
  51
  52   snprintf(buf2, SYSERR_MSGSIZE, "Packet from %s:%u, length: %d, content:",
  53            inet_ntoa(peer->sin_addr),
  54            ntohs(peer->sin_port),
  55            len);
  56   buf2[SYSERR_MSGSIZE-1] = 0;
  57   pos = strlen(buf2);
  58   for(n=0; n<len; n++) {
  59     if ((pos+4)<SYSERR_MSGSIZE) {
  60       sprintf((buf2+pos), " %02hhx", ((unsigned char*)pack)[n]);
  61       pos += 3;
  62     }
  63   }
  64   buf2[pos] = 0;
  65
  66   if (en)
  67     syslog(pri, "%s: %d: %d (%s) %s. %s", fn, ln, en, strerror(en), buf, buf2);
  68   else
  69     syslog(pri, "%s: %d: %s. %s", fn, ln, buf, buf2);
  70
  71 }