1 /* $OpenBSD: yplog.c,v 1.8 2002/07/19 02:38:40 deraadt Exp $ */
2
3 /*
4 * Copyright (c) 1996 Charles D. Cranor
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by Charles D. Cranor.
18 * 4. The name of the author may not be used to endorse or promote products
19 * derived from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 /*
34 * yplog.c: replacement yplog routines for
35 * Mats O Jansson's ypserv program, as added by
36 * Chuck Cranor.
37 */
38
39 #include <stdio.h>
40 #include <unistd.h>
41 #include <sys/types.h>
42 #include <sys/stat.h>
43 #include <stdarg.h>
44 #include "yplog.h"
45
46 static FILE *logfp = NULL; /* the log file */
47
48 /*
49 * yplog(): like a printf, but to the log file. does the flush
50 * and data for you.
51 */
52 void
yplog(const char * fmt,...)53 yplog(const char *fmt, ...)
54 {
55 va_list ap;
56
57 va_start(ap, fmt);
58 vyplog(fmt, ap);
59 va_end(ap);
60 }
61
62 /*
63 * vyplog() support routine for yplog()
64 */
65 void
vyplog(const char * fmt,va_list ap)66 vyplog(const char *fmt, va_list ap)
67 {
68 time_t t;
69
70 if (logfp == NULL)
71 return;
72 (void)time(&t);
73 fprintf(logfp,"%.15s ", ctime(&t) + 4);
74 vfprintf(logfp, fmt, ap);
75 fprintf(logfp,"\n");
76 fflush(logfp);
77 }
78
79 /*
80 * open log
81 */
82 void
ypopenlog(void)83 ypopenlog(void)
84 {
85 static char logfn[] = "/var/yp/ypserv.log";
86
87 if (access(logfn, W_OK) == -1)
88 return;
89 logfp = fopen("/var/yp/ypserv.log", "a");
90 if (logfp == NULL)
91 return;
92 yplog("yplog opened");
93 }
94
95 /*
96 * close log
97 */
98 void
ypcloselog(void)99 ypcloselog(void)
100 {
101 if (logfp) {
102 yplog("yplog closed");
103 fclose(logfp);
104 logfp = NULL;
105 }
106 }
107