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397 lines
9.9 KiB
397 lines
9.9 KiB
/*
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* Copyright (C) 2009 Sippy Software, Inc., http://www.sippysoft.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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* Kamailio 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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* Kamailio 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 <Python.h>
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#include <libgen.h>
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#include "../../str.h"
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#include "../../sr_module.h"
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#include "python_exec.h"
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#include "python_iface.h"
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#include "python_msgobj.h"
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#include "python_support.h"
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#include "python_mod.h"
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#include "mod_Router.h"
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#include "mod_Core.h"
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#include "mod_Ranks.h"
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#include "mod_Logger.h"
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MODULE_VERSION
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static str script_name = str_init("/usr/local/etc/" NAME "/handler.py");
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static str mod_init_fname = str_init("mod_init");
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static str child_init_mname = str_init("child_init");
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static int mod_init(void);
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static int child_init(int rank);
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static void mod_destroy(void);
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PyObject *handler_obj;
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char *dname = NULL, *bname = NULL;
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PyThreadState *myThreadState;
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/** module parameters */
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static param_export_t params[]={
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{"script_name", PARAM_STR, &script_name },
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{"mod_init_function", PARAM_STR, &mod_init_fname },
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{"child_init_method", PARAM_STR, &child_init_mname },
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{0,0,0}
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};
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/*
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* Exported functions
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*/
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static cmd_export_t cmds[] = {
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{ "python_exec", (cmd_function)python_exec1, 1, NULL, 0, ANY_ROUTE },
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{ "python_exec", (cmd_function)python_exec2, 2, NULL, 0, ANY_ROUTE },
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{ 0, 0, 0, 0, 0, 0 }
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};
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/** module exports */
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struct module_exports exports = {
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"app_python", /* module name */
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RTLD_NOW | RTLD_GLOBAL, /* dlopen flags */
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cmds, /* exported functions */
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params, /* exported parameters */
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0, /* exported statistics */
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0, /* exported MI functions */
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0, /* exported pseudo-variables */
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0, /* extra processes */
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mod_init, /* module initialization function */
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(response_function) NULL, /* response handling function */
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(destroy_function) mod_destroy, /* destroy function */
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child_init /* per-child init function */
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};
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static int mod_init(void)
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{
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char *dname_src, *bname_src;
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int i;
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PyObject *sys_path, *pDir, *pModule, *pFunc, *pArgs;
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PyThreadState *mainThreadState;
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dname_src = as_asciiz(&script_name);
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bname_src = as_asciiz(&script_name);
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if(dname_src==NULL || bname_src==NULL)
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{
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LM_ERR("no more pkg memory\n");
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return -1;
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}
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dname = strdup(dirname(dname_src));
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if(dname==NULL) {
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LM_ERR("no more system memory\n");
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return -1;
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}
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if (strlen(dname) == 0) {
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free(dname);
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dname = malloc(2);
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if(dname==NULL) {
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LM_ERR("no more system memory\n");
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return -1;
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}
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dname[0] = '.';
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dname[1] = '\0';
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}
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bname = strdup(basename(bname_src));
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i = strlen(bname);
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if (bname[i - 1] == 'c' || bname[i - 1] == 'o')
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i -= 1;
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if (bname[i - 3] == '.' && bname[i - 2] == 'p' && bname[i - 1] == 'y') {
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bname[i - 3] = '\0';
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} else {
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LM_ERR("%s: script_name doesn't look like a python script\n",
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script_name.s);
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return -1;
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}
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Py_Initialize();
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PyEval_InitThreads();
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mainThreadState = PyThreadState_Get();
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format_exc_obj = InitTracebackModule();
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if (format_exc_obj == NULL || !PyCallable_Check(format_exc_obj))
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{
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Py_XDECREF(format_exc_obj);
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PyEval_ReleaseLock();
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return -1;
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}
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sys_path = PySys_GetObject("path");
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/* PySys_GetObject doesn't pass reference! No need to DEREF */
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if (sys_path == NULL) {
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if (!PyErr_Occurred())
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PyErr_Format(PyExc_AttributeError, "'module' object 'sys' has no attribute 'path'");
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python_handle_exception("mod_init");
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Py_DECREF(format_exc_obj);
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PyEval_ReleaseLock();
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return -1;
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}
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pDir = PyString_FromString(dname);
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if (pDir == NULL) {
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if (!PyErr_Occurred())
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PyErr_Format(PyExc_AttributeError, "PyString_FromString() has failed");
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python_handle_exception("mod_init");
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Py_DECREF(format_exc_obj);
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PyEval_ReleaseLock();
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return -1;
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}
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PyList_Insert(sys_path, 0, pDir);
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Py_DECREF(pDir);
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if (ap_init_modules() != 0) {
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if (!PyErr_Occurred())
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PyErr_SetString(PyExc_AttributeError, "init_modules() has failed");
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python_handle_exception("mod_init");
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Py_DECREF(format_exc_obj);
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PyEval_ReleaseLock();
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return -1;
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}
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if (python_msgobj_init() != 0) {
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if (!PyErr_Occurred())
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PyErr_SetString(PyExc_AttributeError, "python_msgobj_init() has failed");
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python_handle_exception("mod_init");
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Py_DECREF(format_exc_obj);
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PyEval_ReleaseLock();
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return -1;
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}
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pModule = PyImport_ImportModule(bname);
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if (pModule == NULL) {
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if (!PyErr_Occurred())
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PyErr_Format(PyExc_ImportError, "No module named '%s'", bname);
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python_handle_exception("mod_init");
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Py_DECREF(format_exc_obj);
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PyEval_ReleaseLock();
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return -1;
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}
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pkg_free(dname_src);
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pkg_free(bname_src);
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pFunc = PyObject_GetAttrString(pModule, mod_init_fname.s);
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Py_DECREF(pModule);
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/* pFunc is a new reference */
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if (pFunc == NULL) {
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if (!PyErr_Occurred())
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PyErr_Format(PyExc_AttributeError, "'module' object '%s' has no attribute '%s'", bname, mod_init_fname.s);
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python_handle_exception("mod_init");
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Py_DECREF(format_exc_obj);
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Py_XDECREF(pFunc);
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PyEval_ReleaseLock();
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return -1;
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}
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if (!PyCallable_Check(pFunc)) {
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if (!PyErr_Occurred())
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PyErr_Format(PyExc_AttributeError, "module object '%s' has is not callable attribute '%s'", bname, mod_init_fname.s);
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python_handle_exception("mod_init");
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Py_DECREF(format_exc_obj);
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Py_XDECREF(pFunc);
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PyEval_ReleaseLock();
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return -1;
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}
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pArgs = PyTuple_New(0);
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if (pArgs == NULL) {
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python_handle_exception("mod_init");
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Py_DECREF(format_exc_obj);
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Py_DECREF(pFunc);
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PyEval_ReleaseLock();
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return -1;
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}
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handler_obj = PyObject_CallObject(pFunc, pArgs);
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Py_XDECREF(pFunc);
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Py_XDECREF(pArgs);
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if (handler_obj == Py_None) {
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if (!PyErr_Occurred())
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PyErr_Format(PyExc_TypeError, "Function '%s' of module '%s' has returned None. Should be a class instance.", mod_init_fname.s, bname);
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python_handle_exception("mod_init");
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Py_DECREF(format_exc_obj);
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PyEval_ReleaseLock();
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return -1;
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}
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if (PyErr_Occurred()) {
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python_handle_exception("mod_init");
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Py_XDECREF(handler_obj);
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Py_DECREF(format_exc_obj);
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PyEval_ReleaseLock();
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return -1;
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}
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if (handler_obj == NULL) {
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LM_ERR("PyObject_CallObject() returned NULL but no exception!\n");
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if (!PyErr_Occurred())
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PyErr_Format(PyExc_TypeError, "Function '%s' of module '%s' has returned not returned object. Should be a class instance.", mod_init_fname.s, bname);
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python_handle_exception("mod_init");
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Py_DECREF(format_exc_obj);
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PyEval_ReleaseLock();
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return -1;
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}
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myThreadState = PyThreadState_New(mainThreadState->interp);
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PyEval_ReleaseLock();
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return 0;
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}
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static int child_init(int rank)
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{
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PyObject *pFunc, *pArgs, *pValue, *pResult;
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int rval;
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char *classname;
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PyEval_AcquireLock();
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PyThreadState_Swap(myThreadState);
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// get instance class name
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classname = get_instance_class_name(handler_obj);
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if (classname == NULL)
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{
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if (!PyErr_Occurred())
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PyErr_Format(PyExc_AttributeError, "'module' instance has no class name");
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python_handle_exception("child_init");
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Py_DECREF(format_exc_obj);
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PyThreadState_Swap(NULL);
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PyEval_ReleaseLock();
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return -1;
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}
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pFunc = PyObject_GetAttrString(handler_obj, child_init_mname.s);
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if (pFunc == NULL) {
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python_handle_exception("child_init");
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Py_XDECREF(pFunc);
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Py_DECREF(format_exc_obj);
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PyThreadState_Swap(NULL);
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PyEval_ReleaseLock();
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return -1;
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}
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if (!PyCallable_Check(pFunc)) {
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if (!PyErr_Occurred())
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PyErr_Format(PyExc_AttributeError, "class object '%s' has is not callable attribute '%s'", !classname ? "None" : classname, mod_init_fname.s);
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python_handle_exception("child_init");
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Py_DECREF(format_exc_obj);
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Py_XDECREF(pFunc);
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PyThreadState_Swap(NULL);
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PyEval_ReleaseLock();
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return -1;
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}
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pArgs = PyTuple_New(1);
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if (pArgs == NULL) {
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python_handle_exception("child_init");
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Py_DECREF(format_exc_obj);
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Py_DECREF(pFunc);
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PyThreadState_Swap(NULL);
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PyEval_ReleaseLock();
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return -1;
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}
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pValue = PyInt_FromLong((long)rank);
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if (pValue == NULL) {
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python_handle_exception("child_init");
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Py_DECREF(format_exc_obj);
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Py_DECREF(pArgs);
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Py_DECREF(pFunc);
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PyThreadState_Swap(NULL);
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PyEval_ReleaseLock();
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return -1;
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}
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PyTuple_SetItem(pArgs, 0, pValue);
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/* pValue has been stolen */
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pResult = PyObject_CallObject(pFunc, pArgs);
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Py_DECREF(pFunc);
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Py_DECREF(pArgs);
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if (PyErr_Occurred()) {
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python_handle_exception("child_init");
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Py_DECREF(format_exc_obj);
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Py_XDECREF(pResult);
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PyThreadState_Swap(NULL);
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PyEval_ReleaseLock();
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return -1;
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}
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if (pResult == NULL) {
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LM_ERR("PyObject_CallObject() returned NULL but no exception!\n");
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PyThreadState_Swap(NULL);
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PyEval_ReleaseLock();
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return -1;
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}
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if (!PyInt_Check(pResult))
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{
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if (!PyErr_Occurred())
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PyErr_Format(PyExc_TypeError, "method '%s' of class '%s' should return 'int' type", child_init_mname.s, !classname ? "None" : classname);
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python_handle_exception("child_init");
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Py_DECREF(format_exc_obj);
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Py_XDECREF(pResult);
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PyThreadState_Swap(NULL);
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PyEval_ReleaseLock();
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return -1;
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}
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rval = PyInt_AsLong(pResult);
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Py_DECREF(pResult);
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PyThreadState_Swap(NULL);
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PyEval_ReleaseLock();
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return rval;
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}
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static void mod_destroy(void)
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{
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if (dname)
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free(dname); // dname was strdup'ed
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if (bname)
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free(bname); // bname was strdup'ed
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destroy_mod_Core();
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destroy_mod_Ranks();
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destroy_mod_Logger();
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destroy_mod_Router();
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}
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