release/src/router/pptp-client/util.c

   1 /* util.c ....... error message utilities.
   2  *                C. Scott Ananian <cananian@alumni.princeton.edu>
   3  *
   4  * $Id: util.c,v 1.1.1.1 2002/07/25 06:52:39 honor Exp $
   5  */
   6
   7 #include <stdio.h>
   8 #include <stdarg.h>
   9 #include <syslog.h>
  10 #include <unistd.h>
  11 #include <stdlib.h>
  12 #include "util.h"
  13
  14 #ifndef PROGRAM_NAME
  15 #define PROGRAM_NAME "pptp"
  16 #endif
  17
  18 static void open_log(void) __attribute__ ((constructor));
  19 static void close_log(void) __attribute__ ((destructor));
  20
  21 static void open_log(void) {
  22   openlog(PROGRAM_NAME, LOG_PID, LOG_DAEMON);
  23 }
  24 static void close_log(void) {
  25   closelog();
  26 }
  27
  28 #define MAKE_STRING(label)                              \
  29 va_list ap;                                             \
  30 char buf[256], string[256];                             \
  31 va_start(ap, format);                                   \
  32 vsnprintf(buf, sizeof(buf), format, ap);                \
  33 snprintf(string, sizeof(string), "%s[%s:%s:%d]: %s",    \
  34          label, func, file, line, buf);                 \
  35 va_end(ap)
  36
  37 void _log(char *func, char *file, int line, char *format, ...) {
  38   MAKE_STRING("log");
  39   syslog(LOG_NOTICE, "%s", string);
  40 }
  41
  42 void _warn(char *func, char *file, int line, char *format, ...) {
  43   MAKE_STRING("warn");
  44   fprintf(stderr, "%s\n", string);
  45   syslog(LOG_NOTICE, "%s", string);
  46 }
  47
  48 void _fatal(char *func, char *file, int line, char *format, ...) {
  49   MAKE_STRING("fatal");
  50   fprintf(stderr, "%s\n", string);
  51   syslog(LOG_NOTICE, "%s", string);
  52   exit(1);
  53 }