Brian Waters | 13d9601 | 2017-12-08 16:53:31 -0600 | [diff] [blame^] | 1 | /********************************************************************************************************* |
| 2 | * Software License Agreement (BSD License) * |
| 3 | * Authors: Sebastien Decugis <sdecugis@freediameter.net> * |
| 4 | * and Thomas Klausner <tk@giga.or.at> * |
| 5 | * * |
| 6 | * Copyright (c) 2011, 2014, WIDE Project and NICT * |
| 7 | * All rights reserved. * |
| 8 | * * |
| 9 | * Redistribution and use of this software in source and binary forms, with or without modification, are * |
| 10 | * permitted provided that the following conditions are met: * |
| 11 | * * |
| 12 | * * Redistributions of source code must retain the above * |
| 13 | * copyright notice, this list of conditions and the * |
| 14 | * following disclaimer. * |
| 15 | * * |
| 16 | * * Redistributions in binary form must reproduce the above * |
| 17 | * copyright notice, this list of conditions and the * |
| 18 | * following disclaimer in the documentation and/or other * |
| 19 | * materials provided with the distribution. * |
| 20 | * * |
| 21 | * * Neither the name of the WIDE Project or NICT nor the * |
| 22 | * names of its contributors may be used to endorse or * |
| 23 | * promote products derived from this software without * |
| 24 | * specific prior written permission of WIDE Project and * |
| 25 | * NICT. * |
| 26 | * * |
| 27 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED * |
| 28 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * |
| 29 | * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR * |
| 30 | * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * |
| 31 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * |
| 32 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR * |
| 33 | * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * |
| 34 | * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * |
| 35 | *********************************************************************************************************/ |
| 36 | |
| 37 | #include "rt_redir.h" |
| 38 | |
| 39 | struct dict_object * redir_dict_dr = NULL; |
| 40 | struct dict_object * redir_dict_un = NULL; |
| 41 | |
| 42 | static struct fd_rt_fwd_hdl * fwd_hdl = NULL; |
| 43 | static struct fd_rt_out_hdl * out_hdl = NULL; |
| 44 | static pthread_t exp_thr = (pthread_t)NULL; |
| 45 | |
| 46 | /* Initialize the module */ |
| 47 | static int redir_entry(char * conffile) |
| 48 | { |
| 49 | TRACE_ENTRY(""); |
| 50 | |
| 51 | /* Dictionary objects */ |
| 52 | CHECK_FCT( fd_dict_search( fd_g_config->cnf_dict, DICT_AVP, AVP_BY_NAME, "Destination-Realm", &redir_dict_dr, ENOENT) ); |
| 53 | CHECK_FCT( fd_dict_search( fd_g_config->cnf_dict, DICT_AVP, AVP_BY_NAME, "User-Name", &redir_dict_un, ENOENT) ); |
| 54 | |
| 55 | /* Initialize the entries array */ |
| 56 | CHECK_FCT( redir_entry_init() ); |
| 57 | |
| 58 | /* Start the expire thread */ |
| 59 | CHECK_POSIX( pthread_create( &exp_thr, NULL, redir_exp_thr_fct, NULL ) ); |
| 60 | |
| 61 | /* Register the callback that receives the answers and processes when it contains a Redirect indication. */ |
| 62 | CHECK_FCT( fd_rt_fwd_register ( redir_fwd_cb, NULL, RT_FWD_ANS, &fwd_hdl ) ); |
| 63 | |
| 64 | /* Register the callback that applies the saved Redirect rules to outgoing messages. */ |
| 65 | CHECK_FCT( fd_rt_out_register ( redir_out_cb, NULL, 10, &out_hdl ) ); |
| 66 | |
| 67 | return 0; |
| 68 | } |
| 69 | |
| 70 | EXTENSION_ENTRY("rt_redirect", redir_entry); |
| 71 | |
| 72 | /* And terminate it */ |
| 73 | void fd_ext_fini(void) |
| 74 | { |
| 75 | /* Unregister the callbacks */ |
| 76 | if (fwd_hdl) { |
| 77 | CHECK_FCT_DO( fd_rt_fwd_unregister(fwd_hdl, NULL), ); |
| 78 | } |
| 79 | if (out_hdl) { |
| 80 | CHECK_FCT_DO( fd_rt_out_unregister(out_hdl, NULL), ); |
| 81 | } |
| 82 | |
| 83 | /* Stop the expiry thread */ |
| 84 | CHECK_FCT_DO( fd_thr_term(&exp_thr), ); |
| 85 | |
| 86 | /* Empty all entries */ |
| 87 | redir_entry_fini(); |
| 88 | |
| 89 | return; |
| 90 | } |