1/* Copyright (c) 1998-2022 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published
6 by the Free Software Foundation; version 2 of the License, or
7 (at your option) any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, see <https://www.gnu.org/licenses/>. */
16
17#include <stdarg.h>
18#include <stdio.h>
19#include <string.h>
20#include <syslog.h>
21#include <unistd.h>
22#include "dbg_log.h"
23#include "nscd.h"
24
25/* if in debug mode and we have a debug file, we write the messages to it,
26 if in debug mode and no debug file, we write the messages to stderr,
27 else to syslog. */
28
29static char *logfilename;
30FILE *dbgout;
31int debug_level;
32
33void
34set_logfile (const char *logfile)
35{
36 logfilename = strdup (logfile);
37}
38
39int
40init_logfile (void)
41{
42 if (logfilename)
43 {
44 dbgout = fopen64 (logfilename, "a");
45 return dbgout == NULL ? 0 : 1;
46 }
47 return 1;
48}
49
50void
51dbg_log (const char *fmt,...)
52{
53 va_list ap;
54 char msg2[512];
55
56 va_start (ap, fmt);
57 vsnprintf (msg2, sizeof (msg2), fmt, ap);
58
59 if (debug_level > 0)
60 {
61 time_t t = time (NULL);
62
63 struct tm now;
64 localtime_r (&t, &now);
65
66 char buf[256];
67 strftime (buf, sizeof (buf), "%c", &now);
68
69 char msg[1024];
70 snprintf (msg, sizeof (msg), "%s - %d: %s%s", buf, getpid (), msg2,
71 msg2[strlen (msg2) - 1] == '\n' ? "" : "\n");
72 if (dbgout)
73 {
74 fputs (msg, dbgout);
75 fflush (dbgout);
76 }
77 else
78 fputs (msg, stderr);
79 }
80 else
81 syslog (LOG_NOTICE, "%d %s", getpid (), msg2);
82
83 va_end (ap);
84}
85