diff options
author | David M. Lee <dlee@digium.com> | 2013-09-13 14:22:07 +0000 |
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committer | David M. Lee <dlee@digium.com> | 2013-09-13 14:22:07 +0000 |
commit | 2a57f6ccf72b11e74be1db5dd555ae7011adcc36 (patch) | |
tree | 4e67ab7b01b6685cf845cb0dc505d521fd9541e8 /res/res_pjsip_log_forwarder.c | |
parent | f56796a5397cc818a5b151a27d808425589a123d (diff) |
res_pjsip: Forward PJSIP logging to Asterisk logging
This patch uses PJSIP's pj_log_set_log_func() to forward PJSIP's log
messages to Asterisk's logger. This is done in a new module:
res_pjsip_log_forwarder.so.
This patch sets defaultenabled on the existing res_pjsip_logger.so to
no, since logging every SIP packet seems a bit odd to do by default, and
is (hopefully) less necessary with regular PJSIP logging.
It also removes res_rtp_asterisk's disabling of PJSIP logging.
(closes issue ASTERISK-22360)
Reported by: Joshua Colp
Review: https://reviewboard.asterisk.org/r/2830/
........
Merged revisions 399049 from http://svn.asterisk.org/svn/asterisk/branches/12
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@399051 65c4cc65-6c06-0410-ace0-fbb531ad65f3
Diffstat (limited to 'res/res_pjsip_log_forwarder.c')
-rw-r--r-- | res/res_pjsip_log_forwarder.c | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/res/res_pjsip_log_forwarder.c b/res/res_pjsip_log_forwarder.c new file mode 100644 index 000000000..4b27498ed --- /dev/null +++ b/res/res_pjsip_log_forwarder.c @@ -0,0 +1,124 @@ +/* + * 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_FILE_VERSION(__FILE__, "$Revision$") + +#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", + .load = load_module, + .unload = unload_module, + .load_pri = AST_MODPRI_CHANNEL_DEPEND - 6, + ); |