266 lines
6.9 KiB
C
266 lines
6.9 KiB
C
/*
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* FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
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* Copyright (C) 2005/2006, Anthony Minessale II <anthmct@yahoo.com>
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*
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* Version: MPL 1.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
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*
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* The Initial Developer of the Original Code is
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* Anthony Minessale II <anthmct@yahoo.com>
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* Portions created by the Initial Developer are Copyright (C)
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Brian Fertig <brian.fertig@convergencetek.com>
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* Johny Kadarisman <jkr888@gmail.com>
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* Traun Leyden <tleyden@branchcut.com>
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*
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* mod_python.c -- Python Module
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*
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*/
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#include <Python.h>
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#ifndef _REENTRANT
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#define _REENTRANT
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#endif
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#ifndef _GNU_SOURCE
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#define _GNU_SOURCE
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#endif
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#include <switch.h>
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static PyThreadState *mainThreadState = NULL;
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void init_freeswitch(void);
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static switch_api_interface_t python_run_interface;
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const char modname[] = "mod_python";
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static void eval_some_python(char *uuid, char *args)
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{
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PyThreadState *tstate = NULL;
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FILE *pythonfile = NULL;
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char *dupargs = NULL;
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char *argv[128] = {0};
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int argc;
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int lead = 0;
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char *script = NULL, *script_path = NULL, *path = NULL;
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if (args) {
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dupargs = strdup(args);
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} else {
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return;
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}
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assert(dupargs != NULL);
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if (!(argc = switch_separate_string(dupargs, ' ', argv, (sizeof(argv) / sizeof(argv[0]))))) {
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switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "No script name specified!\n");
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goto done;
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}
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script = argv[0];
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lead = 1;
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if (switch_is_file_path(script)) {
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script_path = script;
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if ((script = strrchr(script_path, *SWITCH_PATH_SEPARATOR))) {
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script++;
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} else {
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script = script_path;
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}
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} else if ((path = switch_mprintf("%s%s%s", SWITCH_GLOBAL_dirs.script_dir, SWITCH_PATH_SEPARATOR, script))) {
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script_path = path;
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}
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if (script_path) {
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if (!switch_file_exists(script_path, NULL) == SWITCH_STATUS_SUCCESS) {
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switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Cannot Open File: %s\n", script_path);
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goto done;
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}
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}
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switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "running %s\n", script_path);
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if ((pythonfile = fopen(script_path, "r"))) {
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PyEval_AcquireLock();
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tstate = PyThreadState_New(mainThreadState->interp);
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if (!tstate) {
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switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "error acquiring tstate\n");
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goto done;
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}
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PyThreadState_Swap(tstate);
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init_freeswitch();
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PyRun_SimpleString("from freeswitch import *");
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if (uuid) {
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char code[128];
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snprintf(code, sizeof(code), "session = SessionContainer(\"%s\");", uuid);
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PyRun_SimpleString(code);
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}
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PySys_SetArgv(argc - lead, &argv[lead]);
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PyRun_SimpleFile(pythonfile, script);
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PyThreadState_Swap(NULL);
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PyThreadState_Clear(tstate);
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PyThreadState_Delete(tstate);
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PyEval_ReleaseLock();
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} else {
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switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "error running %s\n", script_path);
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}
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done:
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if (pythonfile) {
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fclose(pythonfile);
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}
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switch_safe_free(dupargs);
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switch_safe_free(path);
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}
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static void python_function(switch_core_session_t *session, char *data)
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{
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eval_some_python(switch_core_session_get_uuid(session), (char *)data);
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}
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struct switch_py_thread {
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char *args;
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switch_memory_pool_t *pool;
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};
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static void *SWITCH_THREAD_FUNC py_thread_run(switch_thread_t *thread, void *obj)
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{
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switch_memory_pool_t *pool;
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struct switch_py_thread *pt = (struct switch_py_thread *) obj;
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eval_some_python(NULL, strdup(pt->args));
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pool = pt->pool;
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switch_core_destroy_memory_pool(&pool);
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return NULL;
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}
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SWITCH_STANDARD_API(launch_python)
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{
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switch_thread_t *thread;
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switch_threadattr_t *thd_attr = NULL;
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switch_memory_pool_t *pool;
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struct switch_py_thread *pt;
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if (switch_strlen_zero(cmd)) {
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stream->write_function(stream, "USAGE: %s\n", python_run_interface.syntax);
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return SWITCH_STATUS_SUCCESS;
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}
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switch_core_new_memory_pool(&pool);
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assert(pool != NULL);
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pt = switch_core_alloc(pool, sizeof(*pt));
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assert(pt != NULL);
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pt->pool = pool;
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pt->args = switch_core_strdup(pt->pool, cmd);
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switch_threadattr_create(&thd_attr, pt->pool);
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switch_threadattr_detach_set(thd_attr, 1);
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switch_threadattr_stacksize_set(thd_attr, SWITCH_THREAD_STACKSIZE);
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switch_thread_create(&thread, thd_attr, py_thread_run, pt, pt->pool);
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stream->write_function(stream, "OK\n");
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return SWITCH_STATUS_SUCCESS;
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}
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static const switch_application_interface_t python_application_interface = {
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/*.interface_name */ "python",
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/*.application_function */ python_function,
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NULL, NULL, NULL,
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/* flags */ SAF_NONE,
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/* should we support no media mode here? If so, we need to detect the mode, and either disable the media functions or indicate media if/when we need */
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/*.next */ NULL
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};
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static switch_api_interface_t python_run_interface = {
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/*.interface_name */ "python",
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/*.desc */ "run a python script",
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/*.function */ launch_python,
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/*.syntax */ "python </path/to/script>",
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/*.next */ NULL
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};
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static switch_loadable_module_interface_t python_module_interface = {
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/*.module_name */ modname,
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/*.endpoint_interface */ NULL,
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/*.timer_interface */ NULL,
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/*.dialplan_interface */ NULL,
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/*.codec_interface */ NULL,
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/*.application_interface */ &python_application_interface,
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/*.api_interface */ &python_run_interface,
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/*.file_interface */ NULL,
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/*.speech_interface */ NULL,
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/*.directory_interface */ NULL
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};
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SWITCH_MOD_DECLARE(switch_status_t) switch_module_load(const switch_loadable_module_interface_t **module_interface, char *filename)
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{
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/* connect my internal structure to the blank pointer passed to me */
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*module_interface = &python_module_interface;
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switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "Python Framework Loading...\n");
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Py_Initialize();
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PyEval_InitThreads();
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mainThreadState = PyThreadState_Get();
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PyThreadState_Swap(NULL);
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PyEval_ReleaseLock();
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/* indicate that the module should continue to be loaded */
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return SWITCH_STATUS_SUCCESS;
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}
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/*
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Called when the system shuts down*/
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SWITCH_MOD_DECLARE(switch_status_t) switch_module_shutdown(void)
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{
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PyInterpreterState *mainInterpreterState;
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PyThreadState *myThreadState;
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PyEval_AcquireLock();
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mainInterpreterState = mainThreadState->interp;
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myThreadState = PyThreadState_New(mainInterpreterState);
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PyThreadState_Swap(myThreadState);
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PyEval_ReleaseLock();
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Py_Finalize();
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PyEval_ReleaseLock();
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return SWITCH_STATUS_SUCCESS;
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}
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/* Return the number of arguments of the application command line */
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