warp-vpn

point to point VPN implementation
git clone git://git.2f30.org/warp-vpn
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log.c (1468B)

      1 #include <errno.h>
      2 #include <stdarg.h>
      3 #include <stdio.h>
      4 #include <stdlib.h>
      5 #include <string.h>
      6 #include <syslog.h>
      7 
      8 #include "warp.h"
      9 
     10 int debug;
     11 
     12 static char *progname;
     13 
     14 static void
     15 vlog(int priority, char *msg, va_list ap)
     16 {
     17 	if (debug) {
     18 		fprintf(stderr, "%s: ", progname);
     19 		vfprintf(stderr, msg, ap);
     20 		fputc('\n', stderr);
     21 	} else {
     22 		vsyslog(priority, msg, ap);
     23 	}
     24 }
     25 
     26 void
     27 loginit(char *prog)
     28 {
     29 	progname = prog;
     30 	if (!debug)
     31 		openlog(progname, LOG_PID | LOG_NDELAY, LOG_DAEMON);
     32 }
     33 
     34 void
     35 logdbg(char *msg, ...)
     36 {
     37 	char buf[512];
     38 	va_list ap;
     39 
     40 	va_start(ap, msg);
     41 	snprintf(buf, sizeof(buf), "%s: %s", msg, strerror(errno));
     42 	vlog(LOG_DAEMON | LOG_DEBUG, buf, ap);
     43 	va_end(ap);
     44 }
     45 
     46 void
     47 logdbgx(char *msg, ...)
     48 {
     49 	va_list ap;
     50 
     51 	va_start(ap, msg);
     52 	vlog(LOG_DAEMON | LOG_DEBUG, msg, ap);
     53 	va_end(ap);
     54 }
     55 
     56 void
     57 logwarn(char *msg, ...)
     58 {
     59 	char buf[512];
     60 	va_list ap;
     61 
     62 	va_start(ap, msg);
     63 	snprintf(buf, sizeof(buf), "%s: %s", msg, strerror(errno));
     64 	vlog(LOG_DAEMON | LOG_WARNING, buf, ap);
     65 	va_end(ap);
     66 }
     67 
     68 void
     69 logwarnx(char *msg, ...)
     70 {
     71 	va_list ap;
     72 
     73 	va_start(ap, msg);
     74 	vlog(LOG_DAEMON | LOG_WARNING, msg, ap);
     75 	va_end(ap);
     76 }
     77 
     78 void
     79 fatal(char *msg, ...)
     80 {
     81 	char buf[512];
     82 	va_list ap;
     83 
     84 	va_start(ap, msg);
     85 	snprintf(buf, sizeof(buf), "%s: %s", msg, strerror(errno));
     86 	vlog(LOG_DAEMON | LOG_ERR, buf, ap);
     87 	va_end(ap);
     88 	exit(1);
     89 }
     90 
     91 void
     92 fatalx(char *msg, ...)
     93 {
     94 	va_list ap;
     95 
     96 	va_start(ap, msg);
     97 	vlog(LOG_DAEMON | LOG_ERR, msg, ap);
     98 	va_end(ap);
     99 	exit(1);
    100 }