aboutsummaryrefslogtreecommitdiffstats
path: root/logger.c
blob: 36c76e6c5840010a1e970189a93295fa3b22bc10 (plain)
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
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
/*
 * Asterisk Logger
 * 
 * Mark Spencer <markster@marko.net>
 *
 * Copyright(C)1999, Linux Support Services, Inc.
 * 
 * Distributed under the terms of the GNU General Public License (GPL) Version 2
 *
 * Logging routines
 *
 */

#include <stdarg.h>
#include <stdio.h>
#include <unistd.h>
#include <time.h>
#include <asterisk/lock.h>
#include <asterisk/logger.h>
#include <asterisk/options.h>
#include <asterisk/channel.h>
#include <asterisk/config.h>
#include <asterisk/term.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <pthread.h>
#include <sys/stat.h>
#include "asterisk.h"
#include "astconf.h"

#define MAX_MSG_QUEUE 200

static ast_mutex_t msglist_lock = AST_MUTEX_INITIALIZER;
static ast_mutex_t loglock = AST_MUTEX_INITIALIZER;

static struct msglist {
	char *msg;
	struct msglist *next;
} *list = NULL, *last = NULL;

struct logfile {
	char fn[256];
	int logflags;
	FILE *f;
	struct logfile *next;
};

static struct logfile *logfiles = NULL;

static int msgcnt = 0;

static FILE *eventlog = NULL;

static char *levels[] = {
	"DEBUG",
	"EVENT",
	"NOTICE",
	"WARNING",
	"ERROR"
};

static int colors[] = {
	COLOR_BRGREEN,
	COLOR_BRBLUE,
	COLOR_YELLOW,
	COLOR_BRRED,
	COLOR_RED
};

static int make_components(char *s, int lineno)
{
	char *w;
	int res = 0;
	char *stringp=NULL;
	stringp=s;
	w = strsep(&stringp, ",");
	while(w) {
		while(*w && (*w < 33))
			w++;
		if (!strcasecmp(w, "debug"))
			res |= (1 << 0);
		else if (!strcasecmp(w, "notice"))
			res |= (1 << 2);
		else if (!strcasecmp(w, "warning"))
			res |= (1 << 3);
		else if (!strcasecmp(w, "error"))
			res |= (1 << 4);
		else {
			fprintf(stderr, "Logfile Warning: Unknown keyword '%s' at line %d of logger.conf\n", w, lineno);
		}
		w = strsep(&stringp, ",");
	}
	return res;
}

static struct logfile *make_logfile(char *fn, char *components, int lineno)
{
	struct logfile *f;
	char tmp[256];
	if (!strlen(fn))
		return NULL;
	f = malloc(sizeof(struct logfile));
	if (f) {
		memset(f, 0, sizeof(f));
		strncpy(f->fn, fn, sizeof(f->fn) - 1);
		if (!strcasecmp(fn, "ignore")) {
			f->f = NULL;
		} else if (!strcasecmp(fn, "console")) {
			f->f = stdout;
		} else {
			if (fn[0] == '/') 
				strncpy(tmp, fn, sizeof(tmp) - 1);
			else
				snprintf(tmp, sizeof(tmp), "%s/%s", (char *)ast_config_AST_LOG_DIR, fn);
			f->f = fopen(tmp, "a");
			if (!f->f) {
				/* Can't log here, since we're called with a lock */
				fprintf(stderr, "Logger Warning: Unable to open log file '%s': %s\n", tmp, strerror(errno));
			}
		}
		f->logflags = make_components(components, lineno);
		
	}
	return f;
}

static void init_logger_chain(void)
{
	struct logfile *f, *cur;
	struct ast_config *cfg;
	struct ast_variable *var;

	ast_mutex_lock(&loglock);

	/* Free anything that is here */
	f = logfiles;
	while(f) {
		cur = f->next;
		if (f->f && (f->f != stdout) && (f->f != stderr))
			fclose(f->f);
		free(f);
		f = cur;
	}

	logfiles = NULL;

	ast_mutex_unlock(&loglock);
	cfg = ast_load("logger.conf");
	ast_mutex_lock(&loglock);
	
	/* If no config file, we're fine */
	if (!cfg) {
		ast_mutex_unlock(&loglock);
		return;
	}
	var = ast_variable_browse(cfg, "logfiles");
	while(var) {
		f = make_logfile(var->name, var->value, var->lineno);
		if (f) {
			f->next = logfiles;
			logfiles = f;
		}
		var = var->next;
	}
	if (!logfiles) {
		/* Gotta have at least one.  We'll make a NULL one */
		logfiles = make_logfile("ignore", "", -1);
	}
	ast_destroy(cfg);
	ast_mutex_unlock(&loglock);
	

}

static struct verb {
	void (*verboser)(const char *string, int opos, int replacelast, int complete);
	struct verb *next;
} *verboser = NULL;

int init_logger(void)
{
	char tmp[AST_CONFIG_MAX_PATH];
	mkdir((char *)ast_config_AST_LOG_DIR, 0755);
	snprintf(tmp, sizeof(tmp), "%s/%s", (char *)ast_config_AST_LOG_DIR, EVENTLOG);
	eventlog = fopen((char *)tmp, "a");
	if (eventlog) {
		init_logger_chain();
		ast_log(LOG_EVENT, "Started Asterisk Event Logger\n");
		if (option_verbose)
			ast_verbose("Asterisk Event Logger Started %s\n",(char *)tmp);
		return 0;
	} else 
		ast_log(LOG_ERROR, "Unable to create event log: %s\n", strerror(errno));
	init_logger_chain();
	return -1;
}

int reload_logger(void)
{
	char tmp[AST_CONFIG_MAX_PATH];
	ast_mutex_lock(&loglock);
	if (eventlog)
		fclose(eventlog);
	mkdir((char *)ast_config_AST_LOG_DIR, 0755);
	snprintf(tmp, sizeof(tmp), "%s/%s", (char *)ast_config_AST_LOG_DIR, EVENTLOG);
	eventlog = fopen((char *)tmp, "a");
	ast_mutex_unlock(&loglock);

	if (eventlog) {
		init_logger_chain();
		ast_log(LOG_EVENT, "Restarted Asterisk Event Logger\n");
		if (option_verbose)
			ast_verbose("Asterisk Event Logger restarted\n");
		return 0;
	} else 
		ast_log(LOG_ERROR, "Unable to create event log: %s\n", strerror(errno));
	init_logger_chain();
	return -1;
}

extern void ast_log(int level, const char *file, int line, const char *function, const char *fmt, ...)
{
	char date[256];
	char tmp[80];
	char tmp2[80];
	char tmp3[80];
	char tmp4[80];
	char linestr[80];
	time_t t;
	struct tm tm;
	struct logfile *f;

	va_list ap;
	if (!option_verbose && !option_debug && (!level)) {
		return;
	}
	ast_mutex_lock(&loglock);
	if (level == 1 /* Event */) {
		time(&t);
		localtime_r(&t,&tm);
		if (&tm) {
			/* Log events into the event log file, with a different format */
			strftime(date, sizeof(date), "%b %e %T", &tm);
			fprintf(eventlog, "%s asterisk[%d]: ", date, getpid());
			va_start(ap, fmt);
			vfprintf(eventlog, fmt, ap);
			va_end(ap);
			fflush(eventlog);
		} else
			/** Cannot use ast_log() from locked section of ast_log()!
			    ast_log(LOG_WARNING, "Unable to retrieve local time?\n"); **/
			fprintf(stderr, "ast_log: Unable to retrieve local time for %ld?\n", (long)t);
	} else {
		if (logfiles) {
			f = logfiles;
			while(f) {
				if (f->logflags & (1 << level) && f->f) {
					if ((f->f != stdout) && (f->f != stderr)) {
						time(&t);
						localtime_r(&t,&tm);
						strftime(date, sizeof(date), "%b %e %T", &tm);
						fprintf(f->f, "%s %s[%ld]: File %s, Line %d (%s): ", date, levels[level], (long)pthread_self(), file, line, function);
					} else {
						sprintf(linestr, "%d", line);
						fprintf(f->f, "%s[%ld]: File %s, Line %s (%s): ",
																term_color(tmp, levels[level], colors[level], 0, sizeof(tmp)),
																(long)pthread_self(),
																term_color(tmp2, file, COLOR_BRWHITE, 0, sizeof(tmp2)),
																term_color(tmp3, linestr, COLOR_BRWHITE, 0, sizeof(tmp3)),
																term_color(tmp4, function, COLOR_BRWHITE, 0, sizeof(tmp4)));
					}
					va_start(ap, fmt);
					vfprintf(f->f, fmt, ap);
					va_end(ap);
					fflush(f->f);
				}
				f = f->next;
			}
		} else {
			fprintf(stdout, "%s[%ld]: File %s, Line %d (%s): ", levels[level], (long)pthread_self(), file, line, function);
			va_start(ap, fmt);
			vfprintf(stdout, fmt, ap);
			va_end(ap);
			fflush(stdout);
		}
	}
	ast_mutex_unlock(&loglock);
}

extern void ast_verbose(const char *fmt, ...)
{
	static char stuff[4096];
	static int pos = 0, opos;
	static int replacelast = 0, complete;
	struct msglist *m;
	struct verb *v;
	va_list ap;
	va_start(ap, fmt);
	ast_mutex_lock(&msglist_lock);
	vsnprintf(stuff + pos, sizeof(stuff) - pos, fmt, ap);
	opos = pos;
	pos = strlen(stuff);
	if (fmt[strlen(fmt)-1] == '\n') 
		complete = 1;
	else
		complete=0;
	if (complete) {
		if (msgcnt < MAX_MSG_QUEUE) {
			/* Allocate new structure */
			m = malloc(sizeof(struct msglist));
			msgcnt++;
		} else {
			/* Recycle the oldest entry */
			m = list;
			list = list->next;
			free(m->msg);
		}
		if (m) {
			m->msg = strdup(stuff);
			if (m->msg) {
				if (last)
					last->next = m;
				else
					list = m;
				m->next = NULL;
				last = m;
			} else {
				msgcnt--;
				ast_log(LOG_DEBUG, "Out of memory\n");
				free(m);
			}
		}
	}
	if (verboser) {
		v = verboser;
		while(v) {
			v->verboser(stuff, opos, replacelast, complete);
			v = v->next;
		}
	} /* else
		fprintf(stdout, stuff + opos); */

	if (fmt[strlen(fmt)-1] != '\n') 
		replacelast = 1;
	else 
		replacelast = pos = 0;
	va_end(ap);
	ast_mutex_unlock(&msglist_lock);
}

int ast_verbose_dmesg(void (*v)(const char *string, int opos, int replacelast, int complete))
{
	struct msglist *m;
	m = list;
	ast_mutex_lock(&msglist_lock);
	while(m) {
		/* Send all the existing entries that we have queued (i.e. they're likely to have missed) */
		v(m->msg, 0, 0, 1);
		m = m->next;
	}
	ast_mutex_unlock(&msglist_lock);
	return 0;
}

int ast_register_verbose(void (*v)(const char *string, int opos, int replacelast, int complete)) 
{
	struct msglist *m;
	struct verb *tmp;
	/* XXX Should be more flexible here, taking > 1 verboser XXX */
	if ((tmp = malloc(sizeof (struct verb)))) {
		tmp->verboser = v;
		ast_mutex_lock(&msglist_lock);
		tmp->next = verboser;
		verboser = tmp;
		m = list;
		while(m) {
			/* Send all the existing entries that we have queued (i.e. they're likely to have missed) */
			v(m->msg, 0, 0, 1);
			m = m->next;
		}
		ast_mutex_unlock(&msglist_lock);
		return 0;
	}
	return -1;
}

int ast_unregister_verbose(void (*v)(const char *string, int opos, int replacelast, int complete))
{
	int res = -1;
	struct verb *tmp, *tmpl=NULL;
	ast_mutex_lock(&msglist_lock);
	tmp = verboser;
	while(tmp) {
		if (tmp->verboser == v)	{
			if (tmpl)
				tmpl->next = tmp->next;
			else
				verboser = tmp->next;
			free(tmp);
			break;
		}
		tmpl = tmp;
		tmp = tmp->next;
	}
	if (tmp)
		res = 0;
	ast_mutex_unlock(&msglist_lock);
	return res;
}