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Diffstat (limited to 'external/unbound/pythonmod/pythonmod.c')
-rw-r--r--external/unbound/pythonmod/pythonmod.c411
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diff --git a/external/unbound/pythonmod/pythonmod.c b/external/unbound/pythonmod/pythonmod.c
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index dde7e54b2..000000000
--- a/external/unbound/pythonmod/pythonmod.c
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@@ -1,411 +0,0 @@
-/*
- * pythonmod.c: unbound module C wrapper
- *
- * Copyright (c) 2009, Zdenek Vasicek (vasicek AT fit.vutbr.cz)
- * Marek Vavrusa (xvavru00 AT stud.fit.vutbr.cz)
- *
- * This software is open source.
- *
- * Redistribution and use 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.
- *
- * * Neither the name of the organization nor the names of its
- * contributors may be used to endorse or promote products derived from this
- * software without specific prior written permission.
- *
- * 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 REGENTS 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.
- */
-/**
- * \file
- * Python module for unbound. Calls python script.
- */
-
-/* ignore the varargs unused warning from SWIGs internal vararg support */
-#ifdef __GNUC__
-#pragma GCC diagnostic ignored "-Wunused-parameter"
-#pragma GCC diagnostic ignored "-Wunused-but-set-variable"
-#endif
-
-#include "config.h"
-#include "sldns/sbuffer.h"
-
-#undef _POSIX_C_SOURCE
-#undef _XOPEN_SOURCE
-#include <Python.h>
-
-#include "pythonmod/pythonmod.h"
-#include "util/module.h"
-#include "util/config_file.h"
-#include "pythonmod_utils.h"
-
-#ifdef S_SPLINT_S
-typedef struct PyObject PyObject;
-typedef struct PyThreadState PyThreadState;
-typedef void* PyGILState_STATE;
-#endif
-
-/**
- * Global state for the module.
- */
-struct pythonmod_env {
-
- /** Python script filename. */
- const char* fname;
-
- /** Python main thread */
- PyThreadState* mainthr;
- /** Python module. */
- PyObject* module;
-
- /** Module init function */
- PyObject* func_init;
- /** Module deinit function */
- PyObject* func_deinit;
- /** Module operate function */
- PyObject* func_operate;
- /** Module super_inform function */
- PyObject* func_inform;
-
- /** Python dictionary. */
- PyObject* dict;
-
- /** Module data. */
- PyObject* data;
-
- /** Module qstate. */
- struct module_qstate* qstate;
-};
-
-/**
- * Per query state for the iterator module.
- */
-struct pythonmod_qstate {
-
- /** Module per query data. */
- PyObject* data;
-};
-
-/* Generated */
-#ifndef S_SPLINT_S
-#include "pythonmod/interface.h"
-#endif
-
-int pythonmod_init(struct module_env* env, int id)
-{
- /* Initialize module */
- FILE* script_py = NULL;
- PyObject* py_init_arg, *res;
- PyGILState_STATE gil;
- int init_standard = 1;
-
- struct pythonmod_env* pe = (struct pythonmod_env*)calloc(1, sizeof(struct pythonmod_env));
- if (!pe)
- {
- log_err("pythonmod: malloc failure");
- return 0;
- }
-
- env->modinfo[id] = (void*) pe;
-
- /* Initialize module */
- pe->fname = env->cfg->python_script;
- if(pe->fname==NULL || pe->fname[0]==0) {
- log_err("pythonmod: no script given.");
- return 0;
- }
-
- /* Initialize Python libraries */
- if (!Py_IsInitialized())
- {
-#if PY_MAJOR_VERSION >= 3
- wchar_t progname[8];
- mbstowcs(progname, "unbound", 8);
-#else
- char *progname = "unbound";
-#endif
- Py_SetProgramName(progname);
- Py_NoSiteFlag = 1;
-#if PY_MAJOR_VERSION >= 3
- PyImport_AppendInittab(SWIG_name, (void*)SWIG_init);
-#endif
- Py_Initialize();
- PyEval_InitThreads();
- SWIG_init();
- pe->mainthr = PyEval_SaveThread();
- }
-
- gil = PyGILState_Ensure();
-
- /* Initialize Python */
- PyRun_SimpleString("import sys \n");
- PyRun_SimpleString("sys.path.append('.') \n");
- if(env->cfg->directory && env->cfg->directory[0]) {
- char wdir[1524];
- snprintf(wdir, sizeof(wdir), "sys.path.append('%s') \n",
- env->cfg->directory);
- PyRun_SimpleString(wdir);
- }
- PyRun_SimpleString("sys.path.append('"RUN_DIR"') \n");
- PyRun_SimpleString("sys.path.append('"SHARE_DIR"') \n");
- PyRun_SimpleString("import distutils.sysconfig \n");
- PyRun_SimpleString("sys.path.append(distutils.sysconfig.get_python_lib(1,0)) \n");
- if (PyRun_SimpleString("from unboundmodule import *\n") < 0)
- {
- log_err("pythonmod: cannot initialize core module: unboundmodule.py");
- PyGILState_Release(gil);
- return 0;
- }
-
- /* Check Python file load */
- if ((script_py = fopen(pe->fname, "r")) == NULL)
- {
- log_err("pythonmod: can't open file %s for reading", pe->fname);
- PyGILState_Release(gil);
- return 0;
- }
-
- /* Load file */
- pe->module = PyImport_AddModule("__main__");
- pe->dict = PyModule_GetDict(pe->module);
- pe->data = Py_None;
- Py_INCREF(pe->data);
- PyModule_AddObject(pe->module, "mod_env", pe->data);
-
- /* TODO: deallocation of pe->... if an error occurs */
-
- if (PyRun_SimpleFile(script_py, pe->fname) < 0)
- {
- log_err("pythonmod: can't parse Python script %s", pe->fname);
- PyGILState_Release(gil);
- return 0;
- }
-
- fclose(script_py);
-
- if ((pe->func_init = PyDict_GetItemString(pe->dict, "init_standard")) == NULL)
- {
- init_standard = 0;
- if ((pe->func_init = PyDict_GetItemString(pe->dict, "init")) == NULL)
- {
- log_err("pythonmod: function init is missing in %s", pe->fname);
- PyGILState_Release(gil);
- return 0;
- }
- }
- if ((pe->func_deinit = PyDict_GetItemString(pe->dict, "deinit")) == NULL)
- {
- log_err("pythonmod: function deinit is missing in %s", pe->fname);
- PyGILState_Release(gil);
- return 0;
- }
- if ((pe->func_operate = PyDict_GetItemString(pe->dict, "operate")) == NULL)
- {
- log_err("pythonmod: function operate is missing in %s", pe->fname);
- PyGILState_Release(gil);
- return 0;
- }
- if ((pe->func_inform = PyDict_GetItemString(pe->dict, "inform_super")) == NULL)
- {
- log_err("pythonmod: function inform_super is missing in %s", pe->fname);
- PyGILState_Release(gil);
- return 0;
- }
-
- if (init_standard)
- {
- py_init_arg = SWIG_NewPointerObj((void*) env, SWIGTYPE_p_module_env, 0);
- }
- else
- {
- py_init_arg = SWIG_NewPointerObj((void*) env->cfg,
- SWIGTYPE_p_config_file, 0);
- }
- res = PyObject_CallFunction(pe->func_init, "iO", id, py_init_arg);
- if (PyErr_Occurred())
- {
- log_err("pythonmod: Exception occurred in function init");
- PyErr_Print();
- Py_XDECREF(res);
- Py_XDECREF(py_init_arg);
- PyGILState_Release(gil);
- return 0;
- }
-
- Py_XDECREF(res);
- Py_XDECREF(py_init_arg);
- PyGILState_Release(gil);
-
- return 1;
-}
-
-void pythonmod_deinit(struct module_env* env, int id)
-{
- struct pythonmod_env* pe = env->modinfo[id];
- if(pe == NULL)
- return;
-
- /* Free Python resources */
- if(pe->module != NULL)
- {
- PyObject* res;
- PyGILState_STATE gil = PyGILState_Ensure();
-
- /* Deinit module */
- res = PyObject_CallFunction(pe->func_deinit, "i", id);
- if (PyErr_Occurred()) {
- log_err("pythonmod: Exception occurred in function deinit");
- PyErr_Print();
- }
- /* Free result if any */
- Py_XDECREF(res);
- /* Free shared data if any */
- Py_XDECREF(pe->data);
- PyGILState_Release(gil);
-
- PyEval_RestoreThread(pe->mainthr);
- Py_Finalize();
- pe->mainthr = NULL;
- }
- pe->fname = NULL;
- free(pe);
-
- /* Module is deallocated in Python */
- env->modinfo[id] = NULL;
-}
-
-void pythonmod_inform_super(struct module_qstate* qstate, int id, struct module_qstate* super)
-{
- struct pythonmod_env* pe = (struct pythonmod_env*)qstate->env->modinfo[id];
- struct pythonmod_qstate* pq = (struct pythonmod_qstate*)qstate->minfo[id];
- PyObject* py_qstate, *py_sqstate, *res;
- PyGILState_STATE gil = PyGILState_Ensure();
-
- log_query_info(VERB_ALGO, "pythonmod: inform_super, sub is", &qstate->qinfo);
- log_query_info(VERB_ALGO, "super is", &super->qinfo);
-
- py_qstate = SWIG_NewPointerObj((void*) qstate, SWIGTYPE_p_module_qstate, 0);
- py_sqstate = SWIG_NewPointerObj((void*) super, SWIGTYPE_p_module_qstate, 0);
-
- res = PyObject_CallFunction(pe->func_inform, "iOOO", id, py_qstate,
- py_sqstate, pq->data);
-
- if (PyErr_Occurred())
- {
- log_err("pythonmod: Exception occurred in function inform_super");
- PyErr_Print();
- qstate->ext_state[id] = module_error;
- }
- else if ((res == NULL) || (!PyObject_IsTrue(res)))
- {
- log_err("pythonmod: python returned bad code in inform_super");
- qstate->ext_state[id] = module_error;
- }
-
- Py_XDECREF(res);
- Py_XDECREF(py_sqstate);
- Py_XDECREF(py_qstate);
-
- PyGILState_Release(gil);
-}
-
-void pythonmod_operate(struct module_qstate* qstate, enum module_ev event,
- int id, struct outbound_entry* ATTR_UNUSED(outbound))
-{
- struct pythonmod_env* pe = (struct pythonmod_env*)qstate->env->modinfo[id];
- struct pythonmod_qstate* pq = (struct pythonmod_qstate*)qstate->minfo[id];
- PyObject* py_qstate, *res;
- PyGILState_STATE gil = PyGILState_Ensure();
-
- if ( pq == NULL)
- {
- /* create qstate */
- pq = qstate->minfo[id] = malloc(sizeof(struct pythonmod_qstate));
-
- /* Initialize per query data */
- pq->data = Py_None;
- Py_INCREF(pq->data);
- }
-
- /* Call operate */
- py_qstate = SWIG_NewPointerObj((void*) qstate, SWIGTYPE_p_module_qstate, 0);
- res = PyObject_CallFunction(pe->func_operate, "iiOO", id, (int) event,
- py_qstate, pq->data);
- if (PyErr_Occurred())
- {
- log_err("pythonmod: Exception occurred in function operate, event: %s", strmodulevent(event));
- PyErr_Print();
- qstate->ext_state[id] = module_error;
- }
- else if ((res == NULL) || (!PyObject_IsTrue(res)))
- {
- log_err("pythonmod: python returned bad code, event: %s", strmodulevent(event));
- qstate->ext_state[id] = module_error;
- }
- Py_XDECREF(res);
- Py_XDECREF(py_qstate);
-
- PyGILState_Release(gil);
-}
-
-void pythonmod_clear(struct module_qstate* qstate, int id)
-{
- struct pythonmod_qstate* pq;
- if (qstate == NULL)
- return;
-
- pq = (struct pythonmod_qstate*)qstate->minfo[id];
- verbose(VERB_ALGO, "pythonmod: clear, id: %d, pq:%lX", id,
- (unsigned long int)pq);
- if(pq != NULL)
- {
- PyGILState_STATE gil = PyGILState_Ensure();
- Py_DECREF(pq->data);
- PyGILState_Release(gil);
- /* Free qstate */
- free(pq);
- }
-
- qstate->minfo[id] = NULL;
-}
-
-size_t pythonmod_get_mem(struct module_env* env, int id)
-{
- struct pythonmod_env* pe = (struct pythonmod_env*)env->modinfo[id];
- verbose(VERB_ALGO, "pythonmod: get_mem, id: %d, pe:%lX", id,
- (unsigned long int)pe);
- if(!pe)
- return 0;
- return sizeof(*pe);
-}
-
-/**
- * The module function block
- */
-static struct module_func_block pythonmod_block = {
- "python",
- &pythonmod_init, &pythonmod_deinit, &pythonmod_operate, &pythonmod_inform_super,
- &pythonmod_clear, &pythonmod_get_mem
-};
-
-struct module_func_block* pythonmod_get_funcblock(void)
-{
- return &pythonmod_block;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 04:05:08 +0000