diff options
Diffstat (limited to 'extensions/test_cc')
| -rw-r--r-- | extensions/test_cc/CMakeLists.txt | 13 | ||||
| -rw-r--r-- | extensions/test_cc/test_cc.c | 213 |
2 files changed, 226 insertions, 0 deletions
diff --git a/extensions/test_cc/CMakeLists.txt b/extensions/test_cc/CMakeLists.txt new file mode 100644 index 0000000..2cff483 --- /dev/null +++ b/extensions/test_cc/CMakeLists.txt @@ -0,0 +1,13 @@ +# The test_cc extension +PROJECT("Credit Control dummy server" C) + +FD_ADD_EXTENSION(test_cc test_cc.c) + + +#### +## INSTALL section ## + +INSTALL(TARGETS test_cc + LIBRARY DESTINATION ${INSTALL_EXTENSIONS_SUFFIX} + COMPONENT freeDiameter-debug-tools) + diff --git a/extensions/test_cc/test_cc.c b/extensions/test_cc/test_cc.c new file mode 100644 index 0000000..959e72e --- /dev/null +++ b/extensions/test_cc/test_cc.c @@ -0,0 +1,213 @@ +/********************************************************************************************************** + * Software License Agreement(BSD License) * + * Author: Thomas Klausner <tk@giga.or.at> * + * * + * Copyright(c) 2019, Thomas Klausner * + * All rights reserved. * + * * + * Written under contract by Effortel Technologies SA, http://effortel.com/ * + * * + * 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. * + * * + * 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. * + **********************************************************************************************************/ + +/* This extension simply receives CCR and sends CCA after displaying the content, but does not store any data */ + +#include <freeDiameter/extension.h> + +struct disp_hdl *ccr_handler_hdl; + +struct dict_object * aai_avp_do; /* cache the Auth-Application-Id dictionary object */ +struct dict_object * crn_avp_do; /* cache the CC-Request-Number dictionary object */ +struct dict_object * crt_avp_do; /* cache the CC-Request-Type dictionary object */ + +#define MODULE_NAME "test_cc" + +struct statistics { + uint64_t sent; + time_t first; + time_t last; +} statistics; + +void print_statistics(void) { + if (statistics.first == 0 || statistics.last == 0 || statistics.last == statistics.first) { + return; + } + + fd_log_error("%s: %lld CCA messages sent in %llds (%.2f messages/second)", fd_g_config->cnf_diamid, + (long long)statistics.sent, (long long)(statistics.last-statistics.first), (float)statistics.sent / (statistics.last-statistics.first)); +} + +static int ccr_handler(struct msg ** msg, struct avp * avp, struct session * sess, void * data, enum disp_action * act) +{ + struct msg_hdr *hdr = NULL; + time_t now; + + TRACE_ENTRY("%p %p %p %p", msg, avp, sess, act); + + if(msg == NULL) + return EINVAL; + + CHECK_FCT(fd_msg_hdr(*msg, &hdr)); + if(hdr->msg_flags & CMD_FLAG_REQUEST) { + /* Request received, answer it */ + struct msg *answer; + os0_t s; + size_t sl; + struct avp *avp; + union avp_value val; + struct avp *avp_data; + struct avp_hdr *ahdr; + uint32_t crt, crn; + + /* get some necessary information from request */ + if (fd_msg_search_avp(*msg, crt_avp_do, &avp_data) < 0 || avp_data == NULL) { + fd_log_error("[%s] CC-Request-Type not found in CCR", MODULE_NAME); + return 0; + } + if (fd_msg_avp_hdr(avp_data, &ahdr) < 0) { + fd_log_error("[%s] error parsing CC-Request-Type in CCR", MODULE_NAME); + return 0; + } + crt = ahdr->avp_value->i32; + if (fd_msg_search_avp(*msg, crn_avp_do, &avp_data) < 0 || avp_data == NULL) { + fd_log_error("[%s] CC-Request-Number not found in CCR", MODULE_NAME); + return 0; + } + if (fd_msg_avp_hdr(avp_data, &ahdr) < 0) { + fd_log_error("[%s] error parsing CC-Request-Type in CCR", MODULE_NAME); + return 0; + } + crn = ahdr->avp_value->i32; + + /* Create the answer message */ + CHECK_FCT(fd_msg_new_answer_from_req(fd_g_config->cnf_dict, msg, 0)); + answer = *msg; + + /* TODO copy/fill in more AVPs in the answer */ + + /* Auth-Application-Id */ + fd_msg_avp_new(aai_avp_do, 0, &avp); + memset(&val, 0, sizeof(val)); + val.i32 = 4; + if (fd_msg_avp_setvalue(avp, &val) != 0) { + fd_msg_free(answer); + fd_log_error("can't set value for 'Auth-Application-Id' for 'Credit-Control-Request' message"); + return 0; + } + fd_msg_avp_add(answer, MSG_BRW_LAST_CHILD, avp); + + /* CC-Request-Type */ + fd_msg_avp_new(crt_avp_do, 0, &avp); + memset(&val, 0, sizeof(val)); + val.i32 = crt; + if (fd_msg_avp_setvalue(avp, &val) != 0) { + fd_msg_free(answer); + fd_log_error("can't set value for 'CC-Request-Type' for 'Credit-Control-Request' message"); + return 0; + } + fd_msg_avp_add(answer, MSG_BRW_LAST_CHILD, avp); + + /* CC-Request-Number */ + fd_msg_avp_new(crn_avp_do, 0, &avp); + memset(&val, 0, sizeof(val)); + val.i32 = crn; + if (fd_msg_avp_setvalue(avp, &val) != 0) { + fd_msg_free(answer); + fd_log_error("can't set value for 'CC-Request-Number' for 'Credit-Control-Request' message"); + return 0; + } + fd_msg_avp_add(answer, MSG_BRW_LAST_CHILD, avp); + + /* TODO make result configurable (depending on an AVP?) */ + CHECK_FCT(fd_msg_rescode_set(answer, "DIAMETER_SUCCESS", NULL, NULL, 1)); + + fd_log_debug("--------------Received the following Credit Control Request:--------------"); + + CHECK_FCT(fd_sess_getsid(sess, &s, &sl)); + fd_log_debug("Session: %.*s",(int)sl, s); + + fd_log_debug("----------------------------------------------------------------------"); + + /* Send the answer */ + CHECK_FCT(fd_msg_send(msg, NULL, NULL)); + now = time(NULL); + if (!statistics.first) { + statistics.first = now; + } + if (statistics.last != now) { + print_statistics(); + } + statistics.last = now; + statistics.sent++; + fd_log_debug("reply sent"); + } else { + /* We received an answer message, just discard it */ + CHECK_FCT(fd_msg_free(*msg)); + *msg = NULL; + } + + return 0; +} + +/* entry hook: register callback */ +static int cc_entry(char * conffile) +{ + struct disp_when data; + + TRACE_ENTRY("%p", conffile); + + CHECK_FCT_DO(fd_dict_search(fd_g_config->cnf_dict, DICT_AVP, AVP_BY_NAME, "Auth-Application-Id", &aai_avp_do, ENOENT), + { LOG_E("Unable to find 'Auth-Application-Id' AVP in the loaded dictionaries."); }); + CHECK_FCT_DO(fd_dict_search(fd_g_config->cnf_dict, DICT_AVP, AVP_BY_NAME, "CC-Request-Number", &crn_avp_do, ENOENT), + { LOG_E("Unable to find 'CC-Request-Number' AVP in the loaded dictionaries."); }); + CHECK_FCT_DO(fd_dict_search(fd_g_config->cnf_dict, DICT_AVP, AVP_BY_NAME, "CC-Request-Type", &crt_avp_do, ENOENT), + { LOG_E("Unable to find 'CC-Request-Type' AVP in the loaded dictionaries."); }); + + memset(&data, 0, sizeof(data)); + + /* Advertise the support for the Diameter Credit Control application in the peer */ + CHECK_FCT( fd_dict_search( fd_g_config->cnf_dict, DICT_APPLICATION, APPLICATION_BY_NAME, "Diameter Credit Control Application", &data.app, ENOENT) ); + CHECK_FCT( fd_disp_app_support ( data.app, NULL, 1, 0 ) ); + + /* register handler for CCR */ + CHECK_FCT( fd_dict_search( fd_g_config->cnf_dict, DICT_COMMAND, CMD_BY_NAME, "Credit-Control-Request", &data.command, ENOENT) ); + CHECK_FCT( fd_disp_register( ccr_handler, DISP_HOW_CC, &data, NULL, &ccr_handler_hdl ) ); + + return 0; +} + +/* And terminate it */ +void fd_ext_fini(void) +{ + /* Unregister the callbacks */ + if (ccr_handler_hdl) { + CHECK_FCT_DO( fd_disp_unregister(&ccr_handler_hdl, NULL), ); + ccr_handler_hdl = NULL; + } + + print_statistics(); + + return; +} + + +EXTENSION_ENTRY(MODULE_NAME, cc_entry); |