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329 lines
7.2 KiB
329 lines
7.2 KiB
/**
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* Copyright (C) 2014 Daniel-Constantin Mierla (asipto.com)
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*
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* This file is part of Kamailio, a free SIP server.
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*
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* This file is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version
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*
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*
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* This file is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ev.h>
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#include "../../sr_module.h"
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#include "../../dprint.h"
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#include "../../ut.h"
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#include "../../pt.h"
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#include "../../pvar.h"
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#include "../../mem/shm_mem.h"
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#include "../../mod_fix.h"
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#include "../../pvar.h"
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#include "../../cfg/cfg_struct.h"
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#include "../../lib/kcore/faked_msg.h"
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#include "../../modules/tm/tm_load.h"
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#include "evapi_dispatch.h"
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MODULE_VERSION
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static int _evapi_workers = 1;
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static char *_evapi_bind_addr = "127.0.0.1";
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static int _evapi_bind_port = 8448;
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static char *_evapi_bind_param = NULL;
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static int _evapi_netstring_format_param = 1;
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static tm_api_t tmb;
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static int _evapi_dispatcher_pid = -1;
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static int mod_init(void);
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static int child_init(int);
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static void mod_destroy(void);
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static int w_evapi_relay(sip_msg_t* msg, char* evdata, char* p2);
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static int w_evapi_async_relay(sip_msg_t* msg, char* evdata, char* p2);
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static int w_evapi_close(sip_msg_t* msg, char* p1, char* p2);
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static int fixup_evapi_relay(void** param, int param_no);
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static cmd_export_t cmds[]={
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{"evapi_relay", (cmd_function)w_evapi_relay, 1, fixup_evapi_relay,
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0, ANY_ROUTE},
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{"evapi_async_relay", (cmd_function)w_evapi_async_relay, 1, fixup_evapi_relay,
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0, REQUEST_ROUTE},
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{"evapi_close", (cmd_function)w_evapi_close, 0, NULL,
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0, ANY_ROUTE},
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{"evapi_close", (cmd_function)w_evapi_close, 1, NULL,
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0, ANY_ROUTE},
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{0, 0, 0, 0, 0, 0}
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};
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static param_export_t params[]={
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{"workers", INT_PARAM, &_evapi_workers},
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{"bind_addr", PARAM_STRING, &_evapi_bind_param},
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{"netstring_format", INT_PARAM, &_evapi_netstring_format_param},
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{0, 0, 0}
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};
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static pv_export_t mod_pvs[] = {
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{ {"evapi", (sizeof("evapi")-1)}, PVT_OTHER, pv_get_evapi,
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pv_set_evapi, pv_parse_evapi_name, 0, 0, 0},
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{ {0, 0}, 0, 0, 0, 0, 0, 0, 0 }
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};
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struct module_exports exports = {
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"evapi",
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DEFAULT_DLFLAGS, /* dlopen flags */
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cmds,
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params,
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0,
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0, /* exported MI functions */
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mod_pvs, /* exported pseudo-variables */
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0, /* extra processes */
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mod_init, /* module initialization function */
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0, /* response function */
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mod_destroy, /* destroy function */
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child_init /* per child init function */
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};
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/**
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* init module function
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*/
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static int mod_init(void)
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{
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char *p;
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/* init faked sip msg */
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if(faked_msg_init()<0) {
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LM_ERR("failed to init faked sip message\n");
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return -1;
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}
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if(load_tm_api( &tmb ) < 0) {
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LM_INFO("cannot load the TM module functions - async relay disabled\n");
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memset(&tmb, 0, sizeof(tm_api_t));
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}
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if(_evapi_bind_param!=NULL) {
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p = strchr(_evapi_bind_param, ':');
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if(p!=NULL) {
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*p++ = '\0';
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_evapi_bind_port = (short)atoi(p);
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if (_evapi_bind_port <= 0) {
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LM_ERR("invalid port: %d\n", _evapi_bind_port);
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return -1;
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}
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}
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_evapi_bind_addr = _evapi_bind_param;
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}
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/* add space for one extra process */
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register_procs(1 + _evapi_workers);
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/* add child to update local config framework structures */
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cfg_register_child(1 + _evapi_workers);
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evapi_init_environment(_evapi_netstring_format_param);
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return 0;
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}
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/**
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* @brief Initialize async module children
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*/
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static int child_init(int rank)
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{
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int pid;
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int i;
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if (rank==PROC_INIT) {
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if(evapi_init_notify_sockets()<0) {
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LM_ERR("failed to initialize notify sockets\n");
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return -1;
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}
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return 0;
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}
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if (rank!=PROC_MAIN) {
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if(_evapi_dispatcher_pid!=getpid()) {
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evapi_close_notify_sockets_parent();
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}
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return 0;
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}
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pid=fork_process(PROC_NOCHLDINIT, "EvAPI Dispatcher", 1);
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if (pid<0)
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return -1; /* error */
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if(pid==0) {
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/* child */
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_evapi_dispatcher_pid = getpid();
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/* do child init to allow execution of rpc like functions */
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if(init_child(PROC_RPC) < 0) {
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LM_DBG("failed to do RPC child init for dispatcher\n");
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return -1;
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}
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/* initialize the config framework */
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if (cfg_child_init())
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return -1;
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/* main function for dispatcher */
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evapi_close_notify_sockets_child();
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if(evapi_run_dispatcher(_evapi_bind_addr, _evapi_bind_port)<0) {
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LM_ERR("failed to initialize evapi dispatcher process\n");
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return -1;
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}
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}
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for(i=0; i<_evapi_workers; i++) {
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pid=fork_process(PROC_RPC, "EvAPI Worker", 1);
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if (pid<0)
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return -1; /* error */
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if(pid==0) {
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/* child */
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/* initialize the config framework */
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if (cfg_child_init())
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return -1;
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/* main function for workers */
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if(evapi_run_worker(i+1)<0) {
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LM_ERR("failed to initialize worker process: %d\n", i);
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return -1;
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}
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}
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}
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return 0;
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}
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/**
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* destroy module function
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*/
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static void mod_destroy(void)
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{
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}
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/**
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*
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*/
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static int w_evapi_relay(sip_msg_t *msg, char *evdata, char *p2)
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{
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str sdata;
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if(evdata==0) {
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LM_ERR("invalid parameters\n");
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return -1;
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}
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if(fixup_get_svalue(msg, (gparam_t*)evdata, &sdata)!=0) {
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LM_ERR("unable to get data\n");
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return -1;
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}
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if(sdata.s==NULL || sdata.len == 0) {
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LM_ERR("invalid data parameter\n");
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return -1;
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}
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if(evapi_relay(&sdata)<0) {
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LM_ERR("failed to relay event: %.*s\n", sdata.len, sdata.s);
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return -1;
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}
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return 1;
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}
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/**
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*
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*/
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static int w_evapi_async_relay(sip_msg_t *msg, char *evdata, char *p2)
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{
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str sdata;
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unsigned int tindex;
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unsigned int tlabel;
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tm_cell_t *t = 0;
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if(evdata==0) {
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LM_ERR("invalid parameters\n");
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return -1;
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}
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if(tmb.t_suspend==NULL) {
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LM_ERR("evapi async relay is disabled - tm module not loaded\n");
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return -1;
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}
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t = tmb.t_gett();
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if (t==NULL || t==T_UNDEFINED)
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{
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if(tmb.t_newtran(msg)<0)
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{
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LM_ERR("cannot create the transaction\n");
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return -1;
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}
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t = tmb.t_gett();
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if (t==NULL || t==T_UNDEFINED)
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{
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LM_ERR("cannot lookup the transaction\n");
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return -1;
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}
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}
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if(tmb.t_suspend(msg, &tindex, &tlabel)<0)
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{
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LM_ERR("failed to suspend request processing\n");
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return -1;
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}
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LM_DBG("transaction suspended [%u:%u]\n", tindex, tlabel);
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if(fixup_get_svalue(msg, (gparam_t*)evdata, &sdata)!=0) {
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LM_ERR("unable to get data\n");
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return -1;
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}
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if(sdata.s==NULL || sdata.len == 0) {
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LM_ERR("invalid data parameter\n");
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return -1;
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}
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if(evapi_relay(&sdata)<0) {
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LM_ERR("failed to relay event: %.*s\n", sdata.len, sdata.s);
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return -2;
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}
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return 1;
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}
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/**
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*
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*/
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static int fixup_evapi_relay(void** param, int param_no)
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{
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return fixup_spve_null(param, param_no);
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}
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/**
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*
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*/
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static int w_evapi_close(sip_msg_t* msg, char* p1, char* p2)
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{
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int ret;
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ret = evapi_cfg_close(msg);
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if(ret>=0)
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return ret+1;
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return ret;
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}
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