tlog.c - vaccinewars - be a doctor and try to vaccinate the world
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tlog.c (3870B)
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1 /************************************************************************
2 * log.c dopewars - logging functions *
3 * Copyright (C) 1998-2021 Ben Webb *
4 * Email: benwebb@users.sf.net *
5 * WWW: https://dopewars.sourceforge.io/ *
6 * *
7 * This program is free software; you can redistribute it and/or *
8 * modify it under the terms of the GNU General Public License *
9 * as published by the Free Software Foundation; either version 2 *
10 * of the License, or (at your option) any later version. *
11 * *
12 * This program is distributed in the hope that it will be useful, *
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
15 * GNU General Public License for more details. *
16 * *
17 * You should have received a copy of the GNU General Public License *
18 * along with this program; if not, write to the Free Software *
19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, *
20 * MA 02111-1307, USA. *
21 ************************************************************************/
22
23 #ifdef HAVE_CONFIG_H
24 #include <config.h>
25 #endif
26
27 #include <stdarg.h>
28 #include <stdio.h>
29 #include <time.h>
30 #include <glib.h>
31 #ifdef HAVE_SYSLOG_H
32 #include <syslog.h>
33 #endif
34
35 #include "dopewars.h"
36 #include "log.h"
37
38 /*
39 * General logging function. All messages should be given a loglevel,
40 * from 0 to 5 (0=vital, 2=normal, 5=maximum debugging output). This
41 * is essentially just a wrapper around the GLib g_log function.
42 */
43 void dopelog(const int loglevel, const LogFlags flags,
44 const gchar *format, ...)
45 {
46 va_list args;
47
48 /* Don't print server log messages when running standalone */
49 if (flags & LF_SERVER && !Network)
50 return;
51
52 va_start(args, format);
53 g_logv(G_LOG_DOMAIN, 1 << (loglevel + G_LOG_LEVEL_USER_SHIFT), format, args);
54 va_end(args);
55
56 #ifdef HAVE_SYSLOG_H
57 if (loglevel <= Log.Level) {
58 va_start(args, format);
59 vsyslog(LOG_INFO, format, args);
60 va_end(args);
61 }
62 #endif
63 }
64
65 /*
66 * Returns the bitmask necessary to catch all custom log messages.
67 */
68 GLogLevelFlags LogMask()
69 {
70 return ((1 << (MAXLOG)) - 1) << G_LOG_LEVEL_USER_SHIFT;
71 }
72
73 /*
74 * Returns the text to be displayed in a log message, if any.
75 */
76 GString *GetLogString(GLogLevelFlags log_level, const gchar *message)
77 {
78 GString *text;
79 gchar TimeBuf[80];
80 gint i;
81 time_t tim;
82 struct tm *timep;
83
84 text = g_string_new("");
85 if (Log.Timestamp) {
86 tim = time(NULL);
87 timep = localtime(&tim);
88 strftime(TimeBuf, 80, Log.Timestamp, timep);
89 TimeBuf[79] = '\0';
90 g_string_append(text, TimeBuf);
91 }
92
93 for (i = 0; i < MAXLOG; i++)
94 if (log_level & (1 << (G_LOG_LEVEL_USER_SHIFT + i))) {
95 if (i > Log.Level) {
96 g_string_free(text, TRUE);
97 return NULL;
98 }
99 g_string_append_printf(text, "%d: ", i);
100 }
101 g_string_append(text, message);
102 return text;
103 }
104
105 void OpenLog(void)
106 {
107 CloseLog();
108 #ifdef HAVE_SYSLOG_H
109 openlog(PACKAGE, LOG_PID, LOG_USER);
110 #endif
111 if (Log.File[0] == '\0')
112 return;
113 Log.fp = fopen(Log.File, "a");
114 if (Log.fp) {
115 #ifdef SETVBUF_REVERSED /* 2nd and 3rd arguments are reversed on
116 * some systems */
117 setvbuf(Log.fp, _IOLBF, (char *)NULL, 0);
118 #else
119 setvbuf(Log.fp, (char *)NULL, _IOLBF, 0);
120 #endif
121 }
122 }
123
124 void CloseLog(void)
125 {
126 if (Log.fp)
127 fclose(Log.fp);
128 Log.fp = NULL;
129 }