git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@278132 65c4cc65-6c06-0410-ace0-fbb531ad65f3
280 lines
6.8 KiB
C
280 lines
6.8 KiB
C
/*
|
|
* Asterisk -- An open source telephony toolkit.
|
|
*
|
|
* Copyright (C) 2009, malleable, LLC.
|
|
*
|
|
* Sean Bright <sean@malleable.com>
|
|
*
|
|
* See http://www.asterisk.org for more information about
|
|
* the Asterisk project. Please do not directly contact
|
|
* any of the maintainers of this project for assistance;
|
|
* the project provides a web site, mailing lists and IRC
|
|
* channels for your use.
|
|
*
|
|
* This program is free software, distributed under the terms of
|
|
* the GNU General Public License Version 2. See the LICENSE file
|
|
* at the top of the source tree.
|
|
*/
|
|
|
|
/*!
|
|
* \file
|
|
* \brief syslog CDR logger
|
|
*
|
|
* \author Sean Bright <sean@malleable.com>
|
|
*
|
|
* See also
|
|
* \arg \ref Config_cdr
|
|
* \ingroup cdr_drivers
|
|
*/
|
|
|
|
/*** MODULEINFO
|
|
<depend>syslog</depend>
|
|
***/
|
|
|
|
#include "asterisk.h"
|
|
|
|
ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
|
|
|
|
#include "asterisk/module.h"
|
|
#include "asterisk/lock.h"
|
|
#include "asterisk/cdr.h"
|
|
#include "asterisk/pbx.h"
|
|
|
|
#include <syslog.h>
|
|
|
|
#include "asterisk/syslog.h"
|
|
|
|
static const char CONFIG[] = "cdr_syslog.conf";
|
|
|
|
AST_THREADSTORAGE(syslog_buf);
|
|
|
|
static const char name[] = "cdr-syslog";
|
|
|
|
struct cdr_config {
|
|
AST_DECLARE_STRING_FIELDS(
|
|
AST_STRING_FIELD(ident);
|
|
AST_STRING_FIELD(format);
|
|
);
|
|
int facility;
|
|
int priority;
|
|
ast_mutex_t lock;
|
|
AST_LIST_ENTRY(cdr_config) list;
|
|
};
|
|
|
|
static AST_RWLIST_HEAD_STATIC(sinks, cdr_config);
|
|
|
|
static void free_config(void)
|
|
{
|
|
struct cdr_config *sink;
|
|
while ((sink = AST_RWLIST_REMOVE_HEAD(&sinks, list))) {
|
|
ast_mutex_destroy(&sink->lock);
|
|
ast_free(sink);
|
|
}
|
|
}
|
|
|
|
static int syslog_log(struct ast_cdr *cdr)
|
|
{
|
|
struct ast_channel *dummy;
|
|
struct ast_str *str;
|
|
struct cdr_config *sink;
|
|
|
|
/* Batching saves memory management here. Otherwise, it's the same as doing an
|
|
allocation and free each time. */
|
|
if (!(str = ast_str_thread_get(&syslog_buf, 16))) {
|
|
return -1;
|
|
}
|
|
|
|
if (!(dummy = ast_dummy_channel_alloc())) {
|
|
ast_log(AST_LOG_ERROR, "Unable to allocate channel for variable substitution.\n");
|
|
return -1;
|
|
}
|
|
|
|
/* We need to dup here since the cdr actually belongs to the other channel,
|
|
so when we release this channel we don't want the CDR getting cleaned
|
|
up prematurely. */
|
|
dummy->cdr = ast_cdr_dup(cdr);
|
|
|
|
AST_RWLIST_RDLOCK(&sinks);
|
|
|
|
AST_LIST_TRAVERSE(&sinks, sink, list) {
|
|
|
|
ast_str_substitute_variables(&str, 0, dummy, sink->format);
|
|
|
|
/* Even though we have a lock on the list, we could be being chased by
|
|
another thread and this lock ensures that we won't step on anyone's
|
|
toes. Once each CDR backend gets it's own thread, this lock can be
|
|
removed. */
|
|
ast_mutex_lock(&sink->lock);
|
|
|
|
openlog(sink->ident, LOG_CONS, sink->facility);
|
|
syslog(sink->priority, "%s", ast_str_buffer(str));
|
|
closelog();
|
|
|
|
ast_mutex_unlock(&sink->lock);
|
|
}
|
|
|
|
AST_RWLIST_UNLOCK(&sinks);
|
|
|
|
ast_channel_release(dummy);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int load_config(int reload)
|
|
{
|
|
struct ast_config *cfg;
|
|
struct ast_flags config_flags = { reload ? CONFIG_FLAG_FILEUNCHANGED : 0 };
|
|
int default_facility = LOG_LOCAL4;
|
|
int default_priority = LOG_INFO;
|
|
const char *catg = NULL, *tmp;
|
|
|
|
cfg = ast_config_load(CONFIG, config_flags);
|
|
if (cfg == CONFIG_STATUS_FILEMISSING || cfg == CONFIG_STATUS_FILEINVALID) {
|
|
ast_log(AST_LOG_ERROR,
|
|
"Unable to load %s. Not logging custom CSV CDRs to syslog.\n", CONFIG);
|
|
return -1;
|
|
} else if (cfg == CONFIG_STATUS_FILEUNCHANGED) {
|
|
return 0;
|
|
}
|
|
|
|
if (reload) {
|
|
free_config();
|
|
}
|
|
|
|
if (!(ast_strlen_zero(tmp = ast_variable_retrieve(cfg, "general", "facility")))) {
|
|
int facility = ast_syslog_facility(tmp);
|
|
if (facility < 0) {
|
|
ast_log(AST_LOG_WARNING,
|
|
"Invalid facility '%s' specified, defaulting to '%s'\n",
|
|
tmp, ast_syslog_facility_name(default_facility));
|
|
} else {
|
|
default_facility = facility;
|
|
}
|
|
}
|
|
|
|
if (!(ast_strlen_zero(tmp = ast_variable_retrieve(cfg, "general", "priority")))) {
|
|
int priority = ast_syslog_priority(tmp);
|
|
if (priority < 0) {
|
|
ast_log(AST_LOG_WARNING,
|
|
"Invalid priority '%s' specified, defaulting to '%s'\n",
|
|
tmp, ast_syslog_priority_name(default_priority));
|
|
} else {
|
|
default_priority = priority;
|
|
}
|
|
}
|
|
|
|
while ((catg = ast_category_browse(cfg, catg))) {
|
|
struct cdr_config *sink;
|
|
|
|
if (!strcasecmp(catg, "general")) {
|
|
continue;
|
|
}
|
|
|
|
if (ast_strlen_zero(tmp = ast_variable_retrieve(cfg, catg, "template"))) {
|
|
ast_log(AST_LOG_WARNING,
|
|
"No 'template' parameter found for '%s'. Skipping.\n", catg);
|
|
continue;
|
|
}
|
|
|
|
sink = ast_calloc_with_stringfields(1, struct cdr_config, 1024);
|
|
|
|
if (!sink) {
|
|
ast_log(AST_LOG_ERROR,
|
|
"Unable to allocate memory for configuration settings.\n");
|
|
free_config();
|
|
break;
|
|
}
|
|
|
|
ast_mutex_init(&sink->lock);
|
|
ast_string_field_set(sink, ident, catg);
|
|
ast_string_field_set(sink, format, tmp);
|
|
|
|
if (ast_strlen_zero(tmp = ast_variable_retrieve(cfg, catg, "facility"))) {
|
|
sink->facility = default_facility;
|
|
} else {
|
|
int facility = ast_syslog_facility(tmp);
|
|
if (facility < 0) {
|
|
ast_log(AST_LOG_WARNING,
|
|
"Invalid facility '%s' specified for '%s,' defaulting to '%s'\n",
|
|
tmp, catg, ast_syslog_facility_name(default_facility));
|
|
} else {
|
|
sink->facility = facility;
|
|
}
|
|
}
|
|
|
|
if (ast_strlen_zero(tmp = ast_variable_retrieve(cfg, catg, "priority"))) {
|
|
sink->priority = default_priority;
|
|
} else {
|
|
int priority = ast_syslog_priority(tmp);
|
|
if (priority < 0) {
|
|
ast_log(AST_LOG_WARNING,
|
|
"Invalid priority '%s' specified for '%s,' defaulting to '%s'\n",
|
|
tmp, catg, ast_syslog_priority_name(default_priority));
|
|
} else {
|
|
sink->priority = priority;
|
|
}
|
|
}
|
|
|
|
AST_RWLIST_INSERT_TAIL(&sinks, sink, list);
|
|
}
|
|
|
|
ast_config_destroy(cfg);
|
|
|
|
return AST_RWLIST_EMPTY(&sinks) ? -1 : 0;
|
|
}
|
|
|
|
static int unload_module(void)
|
|
{
|
|
ast_cdr_unregister(name);
|
|
|
|
if (AST_RWLIST_WRLOCK(&sinks)) {
|
|
ast_cdr_register(name, ast_module_info->description, syslog_log);
|
|
ast_log(AST_LOG_ERROR, "Unable to lock sink list. Unload failed.\n");
|
|
return -1;
|
|
}
|
|
|
|
free_config();
|
|
AST_RWLIST_UNLOCK(&sinks);
|
|
return 0;
|
|
}
|
|
|
|
static enum ast_module_load_result load_module(void)
|
|
{
|
|
int res;
|
|
|
|
if (AST_RWLIST_WRLOCK(&sinks)) {
|
|
ast_log(AST_LOG_ERROR, "Unable to lock sink list. Load failed.\n");
|
|
return AST_MODULE_LOAD_DECLINE;
|
|
}
|
|
|
|
res = load_config(0);
|
|
AST_RWLIST_UNLOCK(&sinks);
|
|
if (res) {
|
|
return AST_MODULE_LOAD_DECLINE;
|
|
}
|
|
ast_cdr_register(name, ast_module_info->description, syslog_log);
|
|
return AST_MODULE_LOAD_SUCCESS;
|
|
}
|
|
|
|
static int reload(void)
|
|
{
|
|
int res;
|
|
if (AST_RWLIST_WRLOCK(&sinks)) {
|
|
ast_log(AST_LOG_ERROR, "Unable to lock sink list. Load failed.\n");
|
|
return AST_MODULE_LOAD_DECLINE;
|
|
}
|
|
|
|
free_config();
|
|
res = load_config(1);
|
|
AST_RWLIST_UNLOCK(&sinks);
|
|
|
|
return res ? AST_MODULE_LOAD_DECLINE : AST_MODULE_LOAD_SUCCESS;
|
|
}
|
|
|
|
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "Customizable syslog CDR Backend",
|
|
.load = load_module,
|
|
.unload = unload_module,
|
|
.reload = reload,
|
|
.load_pri = AST_MODPRI_CDR_DRIVER,
|
|
);
|