ypserv.tproj/yplog.c

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * "Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
   7  * Reserved.  This file contains Original Code and/or Modifications of
   8  * Original Code as defined in and that are subject to the Apple Public
   9  * Source License Version 1.0 (the 'License').  You may not use this file
  10  * except in compliance with the License.  Please obtain a copy of the
  11  * License at http://www.apple.com/publicsource and read it before using
  12  * this file.
  13  *
  14  * The Original Code and all software distributed under the License are
  15  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  16  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  17  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  19  * License for the specific language governing rights and limitations
  20  * under the License."
  21  *
  22  * @APPLE_LICENSE_HEADER_END@
  23  */
  24 /*      $OpenBSD: yplog.c,v 1.5 1997/08/09 22:44:04 maja Exp $ */
  25
  26 /*
  27  * Copyright (c) 1996 Charles D. Cranor
  28  * All rights reserved.
  29  *
  30  * Redistribution and use in source and binary forms, with or without
  31  * modification, are permitted provided that the following conditions
  32  * are met:
  33  * 1. Redistributions of source code must retain the above copyright
  34  *    notice, this list of conditions and the following disclaimer.
  35  * 2. Redistributions in binary form must reproduce the above copyright
  36  *    notice, this list of conditions and the following disclaimer in the
  37  *    documentation and/or other materials provided with the distribution.
  38  * 3. All advertising materials mentioning features or use of this software
  39  *    must display the following acknowledgement:
  40  *      This product includes software developed by Charles D. Cranor.
  41  * 4. The name of the author may not be used to endorse or promote products
  42  *    derived from this software without specific prior written permission.
  43  *
  44  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  45  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  46  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  47  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  48  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  49  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  50  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  51  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  52  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  53  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  54  */
  55
  56 /*
  57  * yplog.c: replacement yplog routines for
  58  * Mats O Jansson's ypserv program, as added by
  59  * Chuck Cranor.
  60  */
  61
  62 #include <stdio.h>
  63 #include <unistd.h>
  64 #include <sys/types.h>
  65 #include <sys/stat.h>
  66 #ifdef __STDC__
  67 #include <stdarg.h>
  68 #else
  69 #include <varargs.h>
  70 #endif
  71 #include "yplog.h"
  72
  73 static FILE     *logfp = NULL;          /* the log file */
  74
  75 /*
  76  * yplog(): like a printf, but to the log file.   does the flush
  77  * and data for you.
  78  */
  79
  80 void
  81 #ifdef __STDC__
  82 yplog(const char *fmt, ...)
  83 #else
  84 yplog(fmt, va_alist)
  85         char *fmt;
  86         va_dcl
  87 #endif
  88 {
  89         va_list ap;
  90
  91 #ifdef __STDC__
  92         va_start(ap, fmt);
  93 #else
  94         va_start(ap);
  95 #endif
  96         vyplog(fmt, ap);
  97         va_end(ap);
  98 }
  99
 100 /*
 101  * vyplog() support routine for yplog()
 102  */
 103
 104 void
 105 vyplog(fmt, ap)
 106         register const char *fmt;
 107         va_list ap;
 108 {
 109         time_t t;
 110
 111         if (logfp == NULL)
 112                 return;
 113         (void)time(&t);
 114         fprintf(logfp,"%.15s ", ctime(&t) + 4);
 115         vfprintf(logfp, fmt, ap);
 116         fprintf(logfp,"\n");
 117         fflush(logfp);
 118 }
 119
 120 /*
 121  * open log
 122  */
 123
 124 void
 125 ypopenlog()
 126 {
 127         static char logfn[] = "/var/yp/ypserv.log";
 128
 129         if (access(logfn, W_OK) == -1)
 130                 return;
 131         logfp = fopen("/var/yp/ypserv.log", "a");
 132         if (logfp == NULL)
 133                 return;
 134         yplog("yplog opened");
 135 }
 136
 137 /*
 138  * close log
 139  */
 140
 141 void
 142 ypcloselog()
 143 {
 144         if (logfp) {
 145                 yplog("yplog closed");
 146                 fclose(logfp);
 147                 logfp = NULL;
 148         }
 149 }