1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
|
/* the Music Player Daemon (MPD)
* Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
* This project's homepage is: http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "log.h"
#include "conf.h"
#include <assert.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <string.h>
#include <stdarg.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
#include <errno.h>
#include <pthread.h>
#include <glib.h>
#define LOG_LEVEL_SECURE G_LOG_LEVEL_INFO
#define LOG_DATE_BUF_SIZE 16
#define LOG_DATE_LEN (LOG_DATE_BUF_SIZE - 1)
static GLogLevelFlags log_threshold = G_LOG_LEVEL_MESSAGE;
static const char *log_charset;
static bool stdout_mode = true;
static int out_fd = -1;
static const char *out_filename;
static void redirect_logs(void)
{
assert(out_fd >= 0);
if (dup2(out_fd, STDOUT_FILENO) < 0)
FATAL("problems dup2 stdout : %s\n", strerror(errno));
if (dup2(out_fd, STDERR_FILENO) < 0)
FATAL("problems dup2 stderr : %s\n", strerror(errno));
}
static const char *log_date(void)
{
static char buf[LOG_DATE_BUF_SIZE];
time_t t = time(NULL);
strftime(buf, LOG_DATE_BUF_SIZE, "%b %d %H:%M : ", localtime(&t));
return buf;
}
static void
file_log_func(const gchar *log_domain,
G_GNUC_UNUSED GLogLevelFlags log_level,
const gchar *message, G_GNUC_UNUSED gpointer user_data)
{
char *converted;
if (log_level > log_threshold)
return;
if (log_charset != NULL) {
converted = g_convert_with_fallback(message, -1,
log_charset, "utf-8",
NULL, NULL, NULL, NULL);
if (converted != NULL)
message = converted;
} else
converted = NULL;
if (log_domain == NULL)
log_domain = "";
fprintf(stderr, "%s%s%s%s",
stdout_mode ? "" : log_date(),
log_domain, *log_domain == 0 ? "" : ": ",
message);
g_free(converted);
}
static void
log_init_stdout(void)
{
g_log_set_default_handler(file_log_func, NULL);
}
static int
open_log_file(void)
{
assert(out_filename != NULL);
return open(out_filename, O_CREAT | O_WRONLY | O_APPEND, 0666);
}
static void
log_init_file(const char *path, unsigned line)
{
out_filename = path;
out_fd = open_log_file();
if (out_fd < 0)
FATAL("problem opening log file \"%s\" (config line %u) for "
"writing\n", path, line);
g_log_set_default_handler(file_log_func, NULL);
}
static inline GLogLevelFlags
parse_log_level(const char *value, unsigned line)
{
if (0 == strcmp(value, "default"))
return G_LOG_LEVEL_MESSAGE;
if (0 == strcmp(value, "secure"))
return LOG_LEVEL_SECURE;
else if (0 == strcmp(value, "verbose"))
return G_LOG_LEVEL_DEBUG;
else
FATAL("unknown log level \"%s\" at line %u\n",
value, line);
}
void log_init(bool verbose, bool use_stdout)
{
ConfigParam *param;
g_get_charset(&log_charset);
if (verbose)
log_threshold = G_LOG_LEVEL_DEBUG;
else if ((param = getConfigParam(CONF_LOG_LEVEL)) != NULL)
log_threshold = parse_log_level(param->value, param->line);
if (use_stdout) {
log_init_stdout();
} else {
param = parseConfigFilePath(CONF_LOG_FILE, 1);
log_init_file(param->value, param->line);
}
}
void setup_log_output(bool use_stdout)
{
fflush(NULL);
if (!use_stdout) {
redirect_logs();
stdout_mode = false;
log_charset = NULL;
}
}
#define log_func(func,level) \
G_GNUC_PRINTF(1, 2) void func(const char *fmt, ...) \
{ \
if (level <= log_threshold) { \
va_list args; \
va_start(args, fmt); \
g_logv(NULL, level, fmt, args); \
va_end(args); \
} \
}
log_func(ERROR, G_LOG_LEVEL_WARNING)
log_func(WARNING, G_LOG_LEVEL_WARNING)
log_func(LOG, G_LOG_LEVEL_MESSAGE)
log_func(SECURE, LOG_LEVEL_SECURE)
log_func(DEBUG, G_LOG_LEVEL_DEBUG)
#undef log_func
G_GNUC_PRINTF(1, 2) G_GNUC_NORETURN void FATAL(const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
g_logv(NULL, G_LOG_LEVEL_ERROR, fmt, args);
va_end(args);
exit(EXIT_FAILURE);
}
int cycle_log_files(void)
{
if (stdout_mode)
return 0;
assert(out_filename);
DEBUG("Cycling log files...\n");
close_log_files();
out_fd = open_log_file();
if (out_fd < 0) {
ERROR("error re-opening log file: %s\n", out_filename);
return -1;
}
redirect_logs();
DEBUG("Done cycling log files\n");
return 0;
}
void close_log_files(void)
{
if (stdout_mode)
return;
assert(out_fd >= 0);
close(out_fd);
}
|
