Mercurial > hg > freeDiameter
diff extensions/rt_debug/rt_debug.c @ 117:a42ecf6c045c
New rt_debug extension for debugging the routing mechanism
author | Sebastien Decugis <sdecugis@nict.go.jp> |
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date | Wed, 09 Dec 2009 15:27:18 +0900 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/extensions/rt_debug/rt_debug.c Wed Dec 09 15:27:18 2009 +0900 @@ -0,0 +1,100 @@ +/********************************************************************************************************* +* Software License Agreement (BSD License) * +* Author: Sebastien Decugis <sdecugis@nict.go.jp> * +* * +* Copyright (c) 2009, WIDE Project and NICT * +* All rights reserved. * +* * +* Redistribution and use of this software in source and binary forms, with or without modification, are * +* permitted provided that the following conditions are met: * +* * +* * Redistributions of source code must retain the above * +* copyright notice, this list of conditions and the * +* following disclaimer. * +* * +* * Redistributions in binary form must reproduce the above * +* copyright notice, this list of conditions and the * +* following disclaimer in the documentation and/or other * +* materials provided with the distribution. * +* * +* * Neither the name of the WIDE Project or NICT nor the * +* names of its contributors may be used to endorse or * +* promote products derived from this software without * +* specific prior written permission of WIDE Project and * +* NICT. * +* * +* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED * +* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * +* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR * +* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * +* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * +* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR * +* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * +* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * +*********************************************************************************************************/ + +/* + * Debug-only extension for routing module; + * displays state information at the end of routing information process. + */ +#include <freeDiameter/extension.h> + +static struct fd_rt_fwd_hdl * fwd_hdl = NULL; +static struct fd_rt_out_hdl * out_hdl = NULL; + +/* Proxying debug callback */ +static int rtdebug_fwd_cb(void * cbdata, struct msg ** msg) +{ + TRACE_ENTRY("%p %p", cbdata, msg); + + fd_log_debug("[rt_debug] FWD routing message: %p\n", msg ? *msg : NULL); + if (msg) + fd_msg_dump_walk(INFO, *msg); + + return 0; +} + +/* Path selection debug callback */ +static int rtdebug_out_cb(void * cbdata, struct msg * msg, struct fd_list * candidates) +{ + struct fd_list * li; + + TRACE_ENTRY("%p %p %p", cbdata, msg, candidates); + + fd_log_debug("[rt_debug] OUT routing message: %p\n", msg); + fd_msg_dump_walk(INFO, msg); + fd_log_debug("[rt_debug] Current list of candidates (%p)\n", msg); + + for (li = candidates->next; li != candidates; li = li->next) { + struct rtd_candidate *c = (struct rtd_candidate *) li; + fd_log_debug("[rt_debug] - %d\t%s\n", c->score, c->diamid); + } + + return 0; +} + +/* Register the callbacks to the daemon */ +static int rtdebug_main(char * conffile) +{ + TRACE_ENTRY("%p", conffile); + + CHECK_FCT( fd_rt_fwd_register ( rtdebug_fwd_cb, NULL, RT_FWD_ALL, &fwd_hdl ) ); + CHECK_FCT( fd_rt_out_register ( rtdebug_out_cb, NULL, -1 /* so that it is called late */, &out_hdl ) ); + + return 0; +} + +/* Cleanup the callbacks */ +void fd_ext_fini(void) +{ + TRACE_ENTRY(); + + /* Unregister the modules */ + CHECK_FCT_DO( fd_rt_fwd_unregister ( fwd_hdl, NULL ), /* continue */ ); + CHECK_FCT_DO( fd_rt_out_unregister ( out_hdl, NULL ), /* continue */ ); + + return ; +} + +/* Define the entry point function */ +EXTENSION_ENTRY("rt_debug", rtdebug_main);