libexec/bootpd/report.c

   1 /* $FreeBSD: src/libexec/bootpd/report.c,v 1.2.6.2 2001/03/05 10:58:59 kris Exp $ */
   2
   3 /*
   4  * report() - calls syslog
   5  */
   6
   7 #ifdef  __STDC__
   8 #include <stdarg.h>
   9 #else
  10 #include <varargs.h>
  11 #endif
  12
  13 #include <stdio.h>
  14 #include <syslog.h>
  15 #include <string.h>
  16 #include <errno.h>
  17
  18 #include "report.h"
  19
  20 #ifndef LOG_NDELAY
  21 #define LOG_NDELAY      0
  22 #endif
  23 #ifndef LOG_DAEMON
  24 #define LOG_DAEMON      0
  25 #endif
  26 #ifndef LOG_BOOTP
  27 #define LOG_BOOTP       LOG_DAEMON
  28 #endif
  29
  30 extern int debug;
  31 extern char *progname;
  32
  33 /*
  34  * This is initialized so you get stderr until you call
  35  *      report_init()
  36  */
  37 static int stderr_only = 1;
  38
  39 void
  40 report_init(int nolog)
  41 {
  42         stderr_only = nolog;
  43 #ifdef SYSLOG
  44         if (!stderr_only) {
  45                 openlog(progname, LOG_PID | LOG_NDELAY, LOG_BOOTP);
  46         }
  47 #endif
  48 }
  49
  50 /*
  51  * This routine reports errors and such via stderr and syslog() if
  52  * appopriate.  It just helps avoid a lot of "#ifdef SYSLOG" constructs
  53  * from being scattered throughout the code.
  54  *
  55  * The syntax is identical to syslog(3), but %m is not considered special
  56  * for output to stderr (i.e. you'll see "%m" in the output. . .).  Also,
  57  * control strings should normally end with \n since newlines aren't
  58  * automatically generated for stderr output (whereas syslog strips out all
  59  * newlines and adds its own at the end).
  60  */
  61
  62 static char *levelnames[] = {
  63 #ifdef LOG_SALERT
  64         "level(0): ",
  65         "alert(1): ",
  66         "alert(2): ",
  67         "emerg(3): ",
  68         "error(4): ",
  69         "crit(5):  ",
  70         "warn(6):  ",
  71         "note(7):  ",
  72         "info(8):  ",
  73         "debug(9): ",
  74         "level(?): "
  75 #else
  76         "emerg(0): ",
  77         "alert(1): ",
  78         "crit(2):  ",
  79         "error(3): ",
  80         "warn(4):  ",
  81         "note(5):  ",
  82         "info(6):  ",
  83         "debug(7): ",
  84         "level(?): "
  85 #endif
  86 };
  87 static int numlevels = sizeof(levelnames) / sizeof(levelnames[0]);
  88
  89
  90 /*
  91  * Print a log message using syslog(3) and/or stderr.
  92  * The message passed in should not include a newline.
  93  */
  94 #ifdef  __STDC__
  95 void
  96 report(int priority, const char *fmt,...)
  97 #else
  98 /*VARARGS2*/
  99 void
 100 report(priority, fmt, va_alist)
 101         int priority;
 102         const char *fmt;
 103         va_dcl
 104 #endif
 105 {
 106         va_list ap;
 107         static char buf[128];
 108
 109         if ((priority < 0) || (priority >= numlevels)) {
 110                 priority = numlevels - 1;
 111         }
 112 #ifdef  __STDC__
 113         va_start(ap, fmt);
 114 #else
 115         va_start(ap);
 116 #endif
 117         vsnprintf(buf, sizeof(buf), fmt, ap);
 118         va_end(ap);
 119
 120         /*
 121          * Print the message
 122          */
 123         if (stderr_only || (debug > 2)) {
 124                 fprintf(stderr, "%s: %s %s\n",
 125                                 progname, levelnames[priority], buf);
 126         }
 127 #ifdef SYSLOG
 128         if (!stderr_only)
 129                 syslog((priority | LOG_BOOTP), "%s", buf);
 130 #endif
 131 }
 132 \f
 133
 134
 135 /*
 136  * Return pointer to static string which gives full filesystem error message.
 137  */
 138 const char *
 139 get_errmsg(void)
 140 {
 141         return strerror(errno);
 142 }