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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2013, Digium, Inc.
*
* David M. Lee, II <dlee@digium.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 Bridge PJSIP logging to Asterisk logging.
* \author David M. Lee, II <dlee@digium.com>
*
* PJSIP logging doesn't exactly match Asterisk logging, but mapping the two is
* not too bad. PJSIP log levels are identified by a single int. Limits are
* not specified by PJSIP, but their implementation used 1 through 6.
*
* The mapping is as follows:
* - 0: LOG_ERROR
* - 1: LOG_ERROR
* - 2: LOG_WARNING
* - 3 and above: equivalent to ast_debug(level, ...) for res_pjsip.so
*/
/*** MODULEINFO
<depend>pjproject</depend>
<support_level>core</support_level>
***/
#include "asterisk.h"
ASTERISK_REGISTER_FILE()
#include <pjsip.h>
#include <pj/log.h>
#include "asterisk/logger.h"
#include "asterisk/module.h"
static pj_log_func *log_cb_orig;
static unsigned decor_orig;
static void log_cb(int level, const char *data, int len)
{
int ast_level;
/* PJSIP doesn't provide much in the way of source info */
const char * log_source = "pjsip";
int log_line = 0;
const char *log_func = "<?>";
int mod_level;
/* Lower number indicates higher importance */
switch (level) {
case 0: /* level zero indicates fatal error, according to docs */
case 1: /* 1 seems to be used for errors */
ast_level = __LOG_ERROR;
break;
case 2: /* 2 seems to be used for warnings and errors */
ast_level = __LOG_WARNING;
break;
default:
ast_level = __LOG_DEBUG;
/* For levels 3 and up, obey the debug level for res_pjsip */
mod_level = ast_opt_dbg_module ?
ast_debug_get_by_module("res_pjsip") : 0;
if (option_debug < level && mod_level < level) {
return;
}
break;
}
/* PJSIP uses indention to indicate function call depth. We'll prepend
* log statements with a tab so they'll have a better shot at lining
* up */
ast_log(ast_level, log_source, log_line, log_func, "\t%s\n", data);
}
static int load_module(void)
{
pj_init();
decor_orig = pj_log_get_decor();
log_cb_orig = pj_log_get_log_func();
ast_debug(3, "Forwarding PJSIP logger to Asterisk logger\n");
/* SENDER prepends the source to the log message. This could be a
* filename, object reference, or simply a string
*
* INDENT is assumed to be on by most log statements in PJSIP itself.
*/
pj_log_set_decor(PJ_LOG_HAS_SENDER | PJ_LOG_HAS_INDENT);
pj_log_set_log_func(log_cb);
return AST_MODULE_LOAD_SUCCESS;
}
static int unload_module(void)
{
pj_log_set_log_func(log_cb_orig);
pj_log_set_decor(decor_orig);
pj_shutdown();
return 0;
}
/* While we don't really export global symbols, we want to load before other
* modules that do */
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_GLOBAL_SYMBOLS | AST_MODFLAG_LOAD_ORDER, "PJSIP Log Forwarder",
.support_level = AST_MODULE_SUPPORT_CORE,
.load = load_module,
.unload = unload_module,
.load_pri = AST_MODPRI_CHANNEL_DEPEND - 6,
);
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