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 void sys_err(int pri, char *fn, int ln, int en, char *fmt, ...)
  24 {
  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),
  34                        buf);
  35         else
  36                 syslog(pri, "%s: %d: %s", fn, ln, buf);
  37 }
  38
  39 void sys_errpack(int pri, char *fn, int ln, int en, struct sockaddr_in *peer,
  40                  void *pack, unsigned len, char *fmt, ...)
  41 {
  42
  43         va_list args;
  44         char buf[SYSERR_MSGSIZE];
  45         char buf2[SYSERR_MSGSIZE];
  46         unsigned int n;
  47         int pos;
  48
  49         va_start(args, fmt);
  50         vsnprintf(buf, SYSERR_MSGSIZE, fmt, args);
  51         va_end(args);
  52         buf[SYSERR_MSGSIZE - 1] = 0;
  53
  54         snprintf(buf2, SYSERR_MSGSIZE,
  55                  "Packet from %s:%u, length: %d, content:",
  56                  inet_ntoa(peer->sin_addr), ntohs(peer->sin_port), len);
  57         buf2[SYSERR_MSGSIZE - 1] = 0;
  58         pos = strlen(buf2);
  59         for (n = 0; n < len; n++) {
  60                 if ((pos + 4) < SYSERR_MSGSIZE) {
  61                         sprintf((buf2 + pos), " %02hhx",
  62                                 ((unsigned char *)pack)[n]);
  63                         pos += 3;
  64                 }
  65         }
  66         buf2[pos] = 0;
  67
  68         if (en)
  69                 syslog(pri, "%s: %d: %d (%s) %s. %s", fn, ln, en, strerror(en),
  70                        buf, buf2);
  71         else
  72                 syslog(pri, "%s: %d: %s. %s", fn, ln, buf, buf2);
  73
  74 }