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annotate extensions/test_as/test_as.c @ 1347:2119c8c0c219

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test_as: new extension that auto-replies to Abort-Session-Requests Does not fill in any relevant data, just returns a success.
author Thomas Klausner <tk@giga.or.at>
date Sun, 12 May 2019 10:36:39 +0200
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2119c8c0c219 test_as: new extension that auto-replies to Abort-Session-Requests
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1 /**********************************************************************************************************
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2 * Software License Agreement(BSD License) *
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3 * Author: Thomas Klausner <tk@giga.or.at> *
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4 * *
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5 * Copyright(c) 2019, Thomas Klausner *
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6 * All rights reserved. *
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7 * *
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8 * Written under contract by Effortel Technologies SA, http://effortel.com/ *
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9 * *
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10 * Redistribution and use of this software in source and binary forms, with or without modification, are *
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11 * permitted provided that the following conditions are met: *
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12 * *
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13 * * Redistributions of source code must retain the above *
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14 * copyright notice, this list of conditions and the *
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15 * following disclaimer. *
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16 * *
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17 * * Redistributions in binary form must reproduce the above *
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18 * copyright notice, this list of conditions and the *
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19 * following disclaimer in the documentation and/or other *
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20 * materials provided with the distribution. *
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21 * *
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22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED *
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23 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A *
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24 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR *
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25 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES(INCLUDING, BUT NOT *
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26 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS *
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27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR *
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28 * TORT(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF *
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29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
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30 **********************************************************************************************************/
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31
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32 /* This extension simply receives ASR and sends ASA after displaying the content, but does not store any data */
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33
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34 #include <freeDiameter/extension.h>
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35
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36 struct disp_hdl *asr_handler_hdl;
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37
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38 static int asr_handler(struct msg ** msg, struct avp * avp, struct session * sess, void * data, enum disp_action * act)
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39 {
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40 struct msg_hdr *hdr = NULL;
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41
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42 TRACE_ENTRY("%p %p %p %p", msg, avp, sess, act);
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43
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44 if(msg == NULL)
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45 return EINVAL;
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46
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47 CHECK_FCT(fd_msg_hdr(*msg, &hdr));
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48 if(hdr->msg_flags & CMD_FLAG_REQUEST) {
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49 /* Request received, answer it */
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50 struct msg *answer;
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51 os0_t s;
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52 size_t sl;
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53
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54 /* Create the answer message */
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55 CHECK_FCT(fd_msg_new_answer_from_req(fd_g_config->cnf_dict, msg, 0));
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56 answer = *msg;
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57
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58 /* TODO copy/fill in AVPs into the answer */
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59 /* TODO make result code configurable, depending on an AVP value? */
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60 CHECK_FCT(fd_msg_rescode_set(answer, "DIAMETER_SUCCESS", NULL, NULL, 1));
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61
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62 fd_log_notice("--------------Received the following Abort Session Request:--------------");
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63
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64 CHECK_FCT(fd_sess_getsid(sess, &s, &sl));
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65 fd_log_notice("Session: %.*s",(int)sl, s);
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66
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67 fd_log_notice("----------------------------------------------------------------------");
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68
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69 /* Send the answer */
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70 CHECK_FCT(fd_msg_send(msg, NULL, NULL));
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71
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72 } else {
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73 /* We received an answer message, just discard it */
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74 CHECK_FCT(fd_msg_free(*msg));
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75 *msg = NULL;
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76 }
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77
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78 return 0;
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79 }
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80
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81 /* entry hook: register callback */
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82 static int as_entry(char * conffile)
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83 {
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84 struct disp_when data;
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85
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86 TRACE_ENTRY("%p", conffile);
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87
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88 memset(&data, 0, sizeof(data));
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89
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90 /* Advertise the support for the Diameter Abort Session application in the peer */
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91 CHECK_FCT( fd_dict_search( fd_g_config->cnf_dict, DICT_APPLICATION, APPLICATION_BY_NAME, "Diameter Credit Control Application", &data.app, ENOENT) );
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92 CHECK_FCT( fd_disp_app_support ( data.app, NULL, 1, 0 ) );
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93
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94 /* register handler for ASR */
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95 CHECK_FCT( fd_dict_search( fd_g_config->cnf_dict, DICT_COMMAND, CMD_BY_NAME, "Abort-Session-Request", &data.command, ENOENT) );
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96 CHECK_FCT( fd_disp_register( asr_handler, DISP_HOW_CC, &data, NULL, &asr_handler_hdl ) );
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97
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98 return 0;
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99 }
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100
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101 EXTENSION_ENTRY("test_as", as_entry);
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