ypserv.tproj/yplog.c

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 /*      $OpenBSD: yplog.c,v 1.5 1997/08/09 22:44:04 maja Exp $ */
  24
  25 /*
  26  * Copyright (c) 1996 Charles D. Cranor
  27  * All rights reserved.
  28  *
  29  * Redistribution and use in source and binary forms, with or without
  30  * modification, are permitted provided that the following conditions
  31  * are met:
  32  * 1. Redistributions of source code must retain the above copyright
  33  *    notice, this list of conditions and the following disclaimer.
  34  * 2. Redistributions in binary form must reproduce the above copyright
  35  *    notice, this list of conditions and the following disclaimer in the
  36  *    documentation and/or other materials provided with the distribution.
  37  * 3. All advertising materials mentioning features or use of this software
  38  *    must display the following acknowledgement:
  39  *      This product includes software developed by Charles D. Cranor.
  40  * 4. The name of the author may not be used to endorse or promote products
  41  *    derived from this software without specific prior written permission.
  42  *
  43  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  44  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  45  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  46  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  47  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  48  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  49  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  50  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  51  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  52  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  53  */
  54
  55 /*
  56  * yplog.c: replacement yplog routines for
  57  * Mats O Jansson's ypserv program, as added by
  58  * Chuck Cranor.
  59  */
  60
  61 #include <stdio.h>
  62 #include <unistd.h>
  63 #include <sys/types.h>
  64 #include <sys/stat.h>
  65 #ifdef __STDC__
  66 #include <stdarg.h>
  67 #else
  68 #include <varargs.h>
  69 #endif
  70 #include "yplog.h"
  71
  72 static FILE     *logfp = NULL;          /* the log file */
  73
  74 /*
  75  * yplog(): like a printf, but to the log file.   does the flush
  76  * and data for you.
  77  */
  78
  79 void
  80 #ifdef __STDC__
  81 yplog(const char *fmt, ...)
  82 #else
  83 yplog(fmt, va_alist)
  84         char *fmt;
  85         va_dcl
  86 #endif
  87 {
  88         va_list ap;
  89
  90 #ifdef __STDC__
  91         va_start(ap, fmt);
  92 #else
  93         va_start(ap);
  94 #endif
  95         vyplog(fmt, ap);
  96         va_end(ap);
  97 }
  98
  99 /*
 100  * vyplog() support routine for yplog()
 101  */
 102
 103 void
 104 vyplog(fmt, ap)
 105         register const char *fmt;
 106         va_list ap;
 107 {
 108         time_t t;
 109
 110         if (logfp == NULL)
 111                 return;
 112         (void)time(&t);
 113         fprintf(logfp,"%.15s ", ctime(&t) + 4);
 114         vfprintf(logfp, fmt, ap);
 115         fprintf(logfp,"\n");
 116         fflush(logfp);
 117 }
 118
 119 /*
 120  * open log
 121  */
 122
 123 void
 124 ypopenlog()
 125 {
 126         static char logfn[] = "/var/yp/ypserv.log";
 127
 128         if (access(logfn, W_OK) == -1)
 129                 return;
 130         logfp = fopen("/var/yp/ypserv.log", "a");
 131         if (logfp == NULL)
 132                 return;
 133         yplog("yplog opened");
 134 }
 135
 136 /*
 137  * close log
 138  */
 139
 140 void
 141 ypcloselog()
 142 {
 143         if (logfp) {
 144                 yplog("yplog closed");
 145                 fclose(logfp);
 146                 logfp = NULL;
 147         }
 148 }