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aaa_diameter: Add Diameter server support
* add the E_DM_REQUEST event, for receiving arbitrary Diameter requests
* add the dm_send_reply(<avps-json>) function, in order to reply back
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| Original file line number | Diff line number | Diff line change |
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| /* | ||
| * Copyright (C) 2024 OpenSIPS Solutions | ||
| * | ||
| * This file is part of opensips, a free SIP server. | ||
| * | ||
| * opensips is free software; you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation; either version 2 of the License, or | ||
| * (at your option) any later version | ||
| * | ||
| * opensips is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with this program; if not, write to the Free Software | ||
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,USA | ||
| */ | ||
|
|
||
| #include "aaa_evi.h" | ||
|
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| #include "../../dprint.h" | ||
| #include "../../ut.h" | ||
| #include "../../ipc.h" | ||
|
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| ipc_handler_type dmev_req_ipc; | ||
|
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| static event_id_t dmev_req_id = EVI_ERROR; /* E_DM_REQUEST */ | ||
| static evi_params_p dmev_req_params; | ||
|
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| static evi_param_p dmev_req_param_sessid; | ||
| static evi_param_p dmev_req_param_appid; | ||
| static evi_param_p dmev_req_param_cmdcode; | ||
| static evi_param_p dmev_req_param_avpsjson; | ||
| static evi_param_p dmev_req_param_fdmsg; | ||
|
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| str dmev_req_pname_sessid = str_init("sess_id"); | ||
| str dmev_req_pname_appid = str_init("app_id"); | ||
| str dmev_req_pname_cmdcode = str_init("cmd_code"); | ||
| str dmev_req_pname_avpsjson = str_init("avps_json"); | ||
| str dmev_req_pname_fdmsg = str_init("_fdmsg_"); | ||
|
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|
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| static int dm_init_ipc(void) | ||
| { | ||
| dmev_req_ipc = ipc_register_handler(dm_raise_event_request, | ||
| "DM Request Dispatch"); | ||
| if (ipc_bad_handler_type(dmev_req_ipc)) { | ||
| LM_ERR("failed to register 'DM Request Dispatch' IPC handler\n"); | ||
| return -1; | ||
| } | ||
|
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| return 0; | ||
| } | ||
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|
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| int dm_init_evi(void) | ||
| { | ||
| if (dm_init_ipc() != 0) { | ||
| LM_ERR("failed to init IPC\n"); | ||
| return -1; | ||
| } | ||
|
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| /* First publish the events */ | ||
| dmev_req_id = evi_publish_event(str_init("E_DM_REQUEST")); | ||
| if (dmev_req_id == EVI_ERROR) { | ||
| LM_ERR("cannot register 'request' event\n"); | ||
| return -1; | ||
| } | ||
|
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| dmev_req_params = pkg_malloc(sizeof *dmev_req_params); | ||
| if (!dmev_req_params) { | ||
| LM_ERR("oom\n"); | ||
| return -1; | ||
| } | ||
| memset(dmev_req_params, 0, sizeof *dmev_req_params); | ||
|
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| dmev_req_param_sessid = evi_param_create(dmev_req_params, &dmev_req_pname_sessid); | ||
| dmev_req_param_appid = evi_param_create(dmev_req_params, &dmev_req_pname_appid); | ||
| dmev_req_param_cmdcode = evi_param_create(dmev_req_params, &dmev_req_pname_cmdcode); | ||
| dmev_req_param_avpsjson = evi_param_create(dmev_req_params, &dmev_req_pname_avpsjson); | ||
| dmev_req_param_fdmsg = evi_param_create(dmev_req_params, &dmev_req_pname_fdmsg); | ||
| if (!dmev_req_param_sessid || !dmev_req_param_appid | ||
| || !dmev_req_param_cmdcode || !dmev_req_param_avpsjson | ||
| || !dmev_req_param_fdmsg) { | ||
| LM_ERR("failed to create EVI params\n"); | ||
| return -1; | ||
| } | ||
|
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| return 0; | ||
| } | ||
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| int dm_dispatch_event_req(struct msg *msg, const str *sessid, int app_id, | ||
| int cmd_code, const str *avps_json) | ||
| { | ||
| dm_ipc_event_req *job; | ||
|
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| job = shm_malloc(sizeof *job); | ||
| if (!job) | ||
| goto out_oom; | ||
| memset(job, 0, sizeof *job); | ||
|
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| job->fd_msg = msg; | ||
| job->app_id = app_id; | ||
| job->cmd_code = cmd_code; | ||
|
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| if (shm_nt_str_dup(&job->sessid, sessid) | ||
| || shm_nt_str_dup(&job->avps_json, avps_json)) | ||
| goto out_oom; | ||
|
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| return ipc_dispatch_job(dmev_req_ipc, job); | ||
|
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| out_oom: | ||
| if (job) { | ||
| shm_free(job->sessid.s); | ||
| shm_free(job->avps_json.s); | ||
| shm_free(job); | ||
| } | ||
| LM_ERR("oom\n"); | ||
| return -1; | ||
| } | ||
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|
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| void dm_raise_event_request(int sender, void *dm_req) | ||
| { | ||
| char buf[sizeof(long)*2 + 1], *p = buf; | ||
| int sz = sizeof(buf); | ||
| str ptr; | ||
|
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| dm_ipc_event_req *job = (dm_ipc_event_req *)dm_req; | ||
|
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| LM_DBG("received Diameter request via IPC, tid: %.*s\n", | ||
| job->sessid.len, job->sessid.s); | ||
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| /* raise the event to script (dispatch) */ | ||
| if (evi_param_set_str(dmev_req_param_sessid, &job->sessid) < 0) { | ||
| LM_ERR("failed to set 'sess_id'\n"); | ||
| goto out; | ||
| } | ||
|
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| if (evi_param_set_int(dmev_req_param_appid, &job->app_id) < 0) { | ||
| LM_ERR("failed to set 'app_id'\n"); | ||
| goto out; | ||
| } | ||
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| if (evi_param_set_int(dmev_req_param_cmdcode, &job->cmd_code) < 0) { | ||
| LM_ERR("failed to set 'cmd_code'\n"); | ||
| goto out; | ||
| } | ||
|
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| if (evi_param_set_str(dmev_req_param_avpsjson, &job->avps_json) < 0) { | ||
| LM_ERR("failed to set 'avps_json'\n"); | ||
| goto out; | ||
| } | ||
|
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| int64_2reverse_hex(&p, &sz, (unsigned long)job->fd_msg); | ||
| *p = '\0'; | ||
| init_str(&ptr, buf); | ||
|
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| if (evi_param_set_str(dmev_req_param_fdmsg, &ptr) < 0) { | ||
| LM_ERR("failed to set '_fdmsg_'\n"); | ||
| goto out; | ||
| } | ||
|
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| if (evi_raise_event(dmev_req_id, dmev_req_params) < 0) | ||
| LM_ERR("failed to raise 'E_DM_REQUEST' event\n"); | ||
|
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| out: | ||
| shm_free(job->sessid.s); | ||
| shm_free(job->avps_json.s); | ||
| shm_free(job); | ||
| } |
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