mirror of https://git.kore.io/kore.git
668 lines
15 KiB
C
668 lines
15 KiB
C
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/*
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* Copyright (c) 2016 Stanislav Yudin <stan@endlessinsomnia.com>
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* Copyright (c) 2017 Joris Vink <joris@coders.se>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/param.h>
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#include <libgen.h>
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#include "kore.h"
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#if !defined(KORE_NO_HTTP)
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#include "http.h"
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#endif
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#include "python_api.h"
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#include "python_methods.h"
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static PyMODINIT_FUNC python_module_init(void);
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static PyObject *python_import(const char *);
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static void python_log_error(const char *);
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static PyObject *pyconnection_alloc(struct connection *);
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static PyObject *python_callable(PyObject *, const char *);
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#if !defined(KORE_NO_HTTP)
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static PyObject *pyhttp_request_alloc(struct http_request *);
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#endif
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static void python_append_path(const char *);
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static void python_push_integer(PyObject *, const char *, long);
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static void python_push_type(const char *, PyObject *, PyTypeObject *);
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#if !defined(KORE_NO_HTTP)
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static int python_runtime_http_request(void *, struct http_request *);
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static int python_runtime_validator(void *, struct http_request *, void *);
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#endif
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static int python_runtime_onload(void *, int);
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static void python_runtime_connect(void *, struct connection *);
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static void python_module_free(struct kore_module *);
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static void python_module_reload(struct kore_module *);
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static void python_module_load(struct kore_module *, const char *);
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static void *python_module_getsym(struct kore_module *, const char *);
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struct kore_module_functions kore_python_module = {
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.free = python_module_free,
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.load = python_module_load,
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.getsym = python_module_getsym,
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.reload = python_module_reload
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};
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struct kore_runtime kore_python_runtime = {
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KORE_RUNTIME_PYTHON,
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#if !defined(KORE_NO_HTTP)
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.http_request = python_runtime_http_request,
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.validator = python_runtime_validator,
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#endif
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.onload = python_runtime_onload,
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.connect = python_runtime_connect
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};
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void
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kore_python_init(void)
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{
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if (PyImport_AppendInittab("kore", &python_module_init) == -1)
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fatal("kore_python_init: failed to add new module");
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Py_Initialize();
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}
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void
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kore_python_cleanup(void)
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{
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if (Py_IsInitialized())
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Py_Finalize();
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}
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static void
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python_log_error(const char *function)
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{
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PyObject *type, *value, *traceback;
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if (!PyErr_Occurred())
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return;
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PyErr_Fetch(&type, &value, &traceback);
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if (type == NULL || value == NULL || traceback == NULL)
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fatal("python_log_error(): exception but no error trace?");
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kore_log(LOG_ERR,
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"python exception in '%s' - type:%s - value:%s - trace:%s",
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function,
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PyUnicode_AsUTF8AndSize(type, NULL),
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PyUnicode_AsUTF8AndSize(value, NULL),
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PyUnicode_AsUTF8AndSize(traceback, NULL));
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Py_DECREF(type);
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Py_DECREF(value);
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Py_DECREF(traceback);
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}
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static void
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python_module_free(struct kore_module *module)
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{
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kore_free(module->path);
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Py_DECREF(module->handle);
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kore_free(module);
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}
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static void
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python_module_reload(struct kore_module *module)
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{
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/* Calls through to kore_python_module_load() below. */
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module->fun->load(module, module->onload);
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}
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static void
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python_module_load(struct kore_module *module, const char *onload)
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{
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if (module->handle != NULL)
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Py_DECREF(module->handle);
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kore_python_cleanup();
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kore_python_init();
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module->handle = python_import(module->path);
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if (module->handle == NULL)
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fatal("%s: failed to import module", module->path);
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}
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static void *
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python_module_getsym(struct kore_module *module, const char *symbol)
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{
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return (python_callable(module->handle, symbol));
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}
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static void pyhttp_dealloc(struct pyhttp_request *pyreq)
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{
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printf("pyreq %p goes byebye\n", (void *)pyreq);
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PyObject_Del((PyObject *)pyreq);
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}
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static void pyconnection_dealloc(struct pyconnection *pyc)
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{
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printf("pyc %p goes byebye\n", (void *)pyc);
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PyObject_Del((PyObject *)pyc);
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}
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#if !defined(KORE_NO_HTTP)
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static int
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python_runtime_http_request(void *addr, struct http_request *req)
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{
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int ret;
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PyObject *pyret, *pyreq, *args, *callable;
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callable = (PyObject *)addr;
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pyreq = pyhttp_request_alloc(req);
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if (pyreq == NULL) {
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kore_log(LOG_ERR, "cannot create new pyhttp_request");
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http_response(req, HTTP_STATUS_INTERNAL_ERROR, NULL, 0);
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return (KORE_RESULT_OK);
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}
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if ((args = PyTuple_New(1)) == NULL)
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fatal("python_runtime_http_request: PyTuple_New failed");
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printf(" args tuple: %p\n", (void *)args);
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if (PyTuple_SetItem(args, 0, pyreq) != 0)
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fatal("python_runtime_http_request: PyTuple_SetItem failed");
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PyErr_Clear();
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pyret = PyObject_Call(callable, args, NULL);
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Py_DECREF(args);
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if (pyret == NULL) {
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Py_XDECREF(req->py_object);
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python_log_error("python_runtime_http_request");
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http_response(req, HTTP_STATUS_INTERNAL_ERROR, NULL, 0);
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return (KORE_RESULT_OK);
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}
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if (!PyLong_Check(pyret))
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fatal("python_runtime_http_request: unexpected return type");
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ret = (int)PyLong_AsLong(pyret);
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if (ret != KORE_RESULT_RETRY)
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Py_XDECREF(req->py_object);
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Py_DECREF(pyret);
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return (ret);
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}
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static int
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python_runtime_validator(void *addr, struct http_request *req, void *data)
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{
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printf("python_runtime_validator: XXX %s\n", req->path);
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return (KORE_RESULT_OK);
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}
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#endif
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static int
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python_runtime_onload(void *addr, int action)
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{
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int ret;
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PyObject *pyret, *args, *pyact, *callable;
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callable = (PyObject *)addr;
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if ((pyact = PyLong_FromLong(action)) == NULL)
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fatal("python_runtime_onload: PyLong_FromLong failed");
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if ((args = PyTuple_New(1)) == NULL)
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fatal("python_runtime_onload: PyTuple_New failed");
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if (PyTuple_SetItem(args, 0, pyact) != 0)
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fatal("python_runtime_onload: PyTuple_SetItem failed");
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pyret = PyObject_Call(callable, args, NULL);
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Py_DECREF(args);
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if (pyret == NULL) {
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python_log_error("python_runtime_onload");
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return (KORE_RESULT_ERROR);
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}
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if (!PyLong_Check(pyret))
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fatal("python_runtime_onload: unexpected return type");
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ret = (int)PyLong_AsLong(pyret);
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Py_DECREF(pyret);
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return (ret);
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}
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static void
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python_runtime_connect(void *addr, struct connection *c)
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{
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PyObject *pyc, *pyret, *args, *callable;
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callable = (PyObject *)addr;
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if ((pyc = pyconnection_alloc(c)) == NULL) {
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kore_log(LOG_ERR, "cannot create new pyconnection");
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kore_connection_disconnect(c);
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return;
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}
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if ((args = PyTuple_New(1)) == NULL)
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fatal("python_runtime_connect: PyTuple_New failed");
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if (PyTuple_SetItem(args, 0, pyc) != 0)
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fatal("python_runtime_connect: PyTuple_SetItem failed");
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pyret = PyObject_Call(callable, args, NULL);
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Py_DECREF(args);
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if (pyret == NULL) {
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python_log_error("python_runtime_connect");
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kore_connection_disconnect(c);
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}
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Py_DECREF(pyret);
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}
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static PyMODINIT_FUNC
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python_module_init(void)
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{
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PyObject *pykore;
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if ((pykore = PyModule_Create(&pykore_module)) == NULL)
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fatal("python_module_init: failed to setup pykore module");
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python_push_type("pyconnection", pykore, &pyconnection_type);
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python_push_integer(pykore, "RESULT_OK", KORE_RESULT_OK);
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python_push_integer(pykore, "RESULT_RETRY", KORE_RESULT_RETRY);
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python_push_integer(pykore, "RESULT_ERROR", KORE_RESULT_ERROR);
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python_push_integer(pykore, "MODULE_LOAD", KORE_MODULE_LOAD);
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python_push_integer(pykore, "MODULE_UNLOAD", KORE_MODULE_UNLOAD);
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python_push_integer(pykore, "LOG_ERR", LOG_ERR);
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python_push_integer(pykore, "LOG_INFO", LOG_INFO);
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python_push_integer(pykore, "LOG_NOTICE", LOG_NOTICE);
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#if !defined(KORE_NO_HTTP)
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python_push_type("pyhttp_request", pykore, &pyhttp_request_type);
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python_push_integer(pykore, "METHOD_GET", HTTP_METHOD_GET);
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python_push_integer(pykore, "METHOD_PUT", HTTP_METHOD_PUT);
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python_push_integer(pykore, "METHOD_HEAD", HTTP_METHOD_HEAD);
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python_push_integer(pykore, "METHOD_POST", HTTP_METHOD_POST);
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python_push_integer(pykore, "METHOD_DELETE", HTTP_METHOD_DELETE);
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python_push_integer(pykore,
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"WEBSOCKET_BROADCAST_LOCAL", WEBSOCKET_BROADCAST_LOCAL);
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python_push_integer(pykore,
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"WEBSOCKET_BROADCAST_GLOBAL", WEBSOCKET_BROADCAST_GLOBAL);
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#endif
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return (pykore);
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}
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static void
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python_append_path(const char *path)
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{
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PyObject *mpath, *spath;
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if ((mpath = PyUnicode_FromString(path)) == NULL)
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fatal("python_append_path: PyUnicode_FromString failed");
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if ((spath = PySys_GetObject("path")) == NULL)
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fatal("python_append_path: PySys_GetObject failed");
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PyList_Append(spath, mpath);
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Py_DECREF(mpath);
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}
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static void
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python_push_type(const char *name, PyObject *module, PyTypeObject *type)
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{
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if (PyType_Ready(type) == -1)
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fatal("python_push_type: failed to ready %s", name);
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Py_INCREF(type);
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if (PyModule_AddObject(module, name, (PyObject *)type) == -1)
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fatal("python_push_type: failed to push %s", name);
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}
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static void
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python_push_integer(PyObject *module, const char *name, long value)
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{
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int ret;
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if ((ret = PyModule_AddIntConstant(module, name, value)) == -1)
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fatal("python_push_integer: failed to add %s", name);
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}
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static PyObject *
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python_exported_log(PyObject *self, PyObject *args)
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{
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int prio;
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const char *message;
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if (!PyArg_ParseTuple(args, "is", &prio, &message)) {
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PyErr_SetString(PyExc_TypeError, "invalid parameters");
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return (NULL);
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}
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kore_log(prio, "%s", message);
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Py_RETURN_TRUE;
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}
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static PyObject *
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python_import(const char *path)
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{
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PyObject *module;
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char *dir, *file, *copy, *p;
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copy = kore_strdup(path);
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if ((file = basename(copy)) == NULL)
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fatal("basename: %s: %s", path, errno_s);
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if ((dir = dirname(copy)) == NULL)
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fatal("dirname: %s: %s", path, errno_s);
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if ((p = strrchr(file, '.')) != NULL)
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*p = '\0';
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python_append_path(dir);
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module = PyImport_ImportModule(file);
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if (module == NULL)
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PyErr_Print();
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kore_free(copy);
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return (module);
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}
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static PyObject *
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python_callable(PyObject *module, const char *symbol)
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{
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PyObject *obj;
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if ((obj = PyObject_GetAttrString(module, symbol)) == NULL)
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return (NULL);
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if (!PyCallable_Check(obj)) {
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Py_DECREF(obj);
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return (NULL);
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}
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return (obj);
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}
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static PyObject *
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pyconnection_alloc(struct connection *c)
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{
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struct pyconnection *pyc;
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pyc = PyObject_New(struct pyconnection, &pyconnection_type);
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if (pyc == NULL)
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return (NULL);
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printf(" pyc: %p\n", (void *)pyc);
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pyc->c = c;
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return ((PyObject *)pyc);
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}
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#if !defined(KORE_NO_HTTP)
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static PyObject *
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pyhttp_request_alloc(struct http_request *req)
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{
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struct pyhttp_request *pyreq;
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pyreq = PyObject_New(struct pyhttp_request, &pyhttp_request_type);
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if (pyreq == NULL)
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return (NULL);
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pyreq->req = req;
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return ((PyObject *)pyreq);
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}
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static PyObject *
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pyhttp_response(struct pyhttp_request *pyreq, PyObject *args)
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{
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Py_buffer body;
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int status;
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||
|
if (!PyArg_ParseTuple(args, "iy*", &status, &body)) {
|
||
|
PyErr_SetString(PyExc_TypeError, "invalid parameters");
|
||
|
return (NULL);
|
||
|
}
|
||
|
|
||
|
http_response(pyreq->req, status, body.buf, body.len);
|
||
|
PyBuffer_Release(&body);
|
||
|
|
||
|
Py_RETURN_TRUE;
|
||
|
}
|
||
|
|
||
|
static PyObject *
|
||
|
pyhttp_response_header(struct pyhttp_request *pyreq, PyObject *args)
|
||
|
{
|
||
|
const char *header, *value;
|
||
|
|
||
|
if (!PyArg_ParseTuple(args, "ss", &header, &value)) {
|
||
|
PyErr_SetString(PyExc_TypeError, "invalid parameters");
|
||
|
return (NULL);
|
||
|
}
|
||
|
|
||
|
http_response_header(pyreq->req, header, value);
|
||
|
|
||
|
Py_RETURN_TRUE;
|
||
|
}
|
||
|
|
||
|
static PyObject *
|
||
|
pyhttp_request_header(struct pyhttp_request *pyreq, PyObject *args)
|
||
|
{
|
||
|
char *value;
|
||
|
const char *header;
|
||
|
PyObject *result;
|
||
|
|
||
|
if (!PyArg_ParseTuple(args, "s", &header)) {
|
||
|
PyErr_SetString(PyExc_TypeError, "invalid parameters");
|
||
|
return (NULL);
|
||
|
}
|
||
|
|
||
|
if (!http_request_header(pyreq->req, header, &value)) {
|
||
|
Py_RETURN_NONE;
|
||
|
}
|
||
|
|
||
|
if ((result = PyUnicode_FromString(value)) == NULL)
|
||
|
return (PyErr_NoMemory());
|
||
|
|
||
|
return (result);
|
||
|
}
|
||
|
|
||
|
static PyObject *
|
||
|
pyhttp_body_read(struct pyhttp_request *pyreq, PyObject *args)
|
||
|
{
|
||
|
ssize_t ret;
|
||
|
size_t len;
|
||
|
Py_ssize_t pylen;
|
||
|
PyObject *result;
|
||
|
u_int8_t buf[1024];
|
||
|
|
||
|
if (!PyArg_ParseTuple(args, "n", &pylen) || pylen < 0) {
|
||
|
PyErr_SetString(PyExc_TypeError, "invalid parameters");
|
||
|
return (NULL);
|
||
|
}
|
||
|
|
||
|
len = (size_t)pylen;
|
||
|
if (len > sizeof(buf)) {
|
||
|
PyErr_SetString(PyExc_RuntimeError, "len > sizeof(buf)");
|
||
|
return (NULL);
|
||
|
}
|
||
|
|
||
|
ret = http_body_read(pyreq->req, buf, len);
|
||
|
if (ret == -1) {
|
||
|
PyErr_SetString(PyExc_RuntimeError, "http_body_read() failed");
|
||
|
return (NULL);
|
||
|
}
|
||
|
|
||
|
if (ret > INT_MAX) {
|
||
|
PyErr_SetString(PyExc_RuntimeError, "ret > INT_MAX");
|
||
|
return (NULL);
|
||
|
}
|
||
|
|
||
|
result = Py_BuildValue("ny#", ret, buf, (int)ret);
|
||
|
if (result == NULL)
|
||
|
return (PyErr_NoMemory());
|
||
|
|
||
|
return (result);
|
||
|
}
|
||
|
|
||
|
static PyObject *
|
||
|
pyhttp_populate_get(struct pyhttp_request *pyreq, PyObject *args)
|
||
|
{
|
||
|
http_populate_get(pyreq->req);
|
||
|
Py_RETURN_TRUE;
|
||
|
}
|
||
|
|
||
|
static PyObject *
|
||
|
pyhttp_populate_post(struct pyhttp_request *pyreq, PyObject *args)
|
||
|
{
|
||
|
http_populate_post(pyreq->req);
|
||
|
Py_RETURN_TRUE;
|
||
|
}
|
||
|
|
||
|
static PyObject *
|
||
|
pyhttp_get_host(struct pyhttp_request *pyreq, void *closure)
|
||
|
{
|
||
|
PyObject *host;
|
||
|
|
||
|
if ((host = PyUnicode_FromString(pyreq->req->host)) == NULL)
|
||
|
return (PyErr_NoMemory());
|
||
|
|
||
|
return (host);
|
||
|
}
|
||
|
|
||
|
static PyObject *
|
||
|
pyhttp_get_path(struct pyhttp_request *pyreq, void *closure)
|
||
|
{
|
||
|
PyObject *path;
|
||
|
|
||
|
if ((path = PyUnicode_FromString(pyreq->req->path)) == NULL)
|
||
|
return (PyErr_NoMemory());
|
||
|
|
||
|
return (path);
|
||
|
}
|
||
|
|
||
|
static PyObject *
|
||
|
pyhttp_get_body(struct pyhttp_request *pyreq, void *closure)
|
||
|
{
|
||
|
ssize_t ret;
|
||
|
struct kore_buf buf;
|
||
|
PyObject *body;
|
||
|
u_int8_t data[BUFSIZ];
|
||
|
|
||
|
kore_buf_init(&buf, 1024);
|
||
|
|
||
|
for (;;) {
|
||
|
ret = http_body_read(pyreq->req, data, sizeof(data));
|
||
|
if (ret == -1) {
|
||
|
kore_buf_cleanup(&buf);
|
||
|
PyErr_SetString(PyExc_RuntimeError,
|
||
|
"http_body_read() failed");
|
||
|
return (NULL);
|
||
|
}
|
||
|
|
||
|
if (ret == 0)
|
||
|
break;
|
||
|
|
||
|
kore_buf_append(&buf, data, (size_t)ret);
|
||
|
}
|
||
|
|
||
|
body = PyBytes_FromStringAndSize((char *)buf.data, buf.offset);
|
||
|
kore_buf_free(&buf);
|
||
|
|
||
|
if (body == NULL)
|
||
|
return (PyErr_NoMemory());
|
||
|
|
||
|
return (body);
|
||
|
}
|
||
|
|
||
|
static PyObject *
|
||
|
pyhttp_get_agent(struct pyhttp_request *pyreq, void *closure)
|
||
|
{
|
||
|
PyObject *agent;
|
||
|
|
||
|
if (pyreq->req->agent == NULL) {
|
||
|
Py_RETURN_NONE;
|
||
|
}
|
||
|
|
||
|
if ((agent = PyUnicode_FromString(pyreq->req->path)) == NULL)
|
||
|
return (PyErr_NoMemory());
|
||
|
|
||
|
return (agent);
|
||
|
}
|
||
|
|
||
|
static int
|
||
|
pyhttp_set_state(struct pyhttp_request *pyreq, PyObject *value, void *closure)
|
||
|
{
|
||
|
if (value == NULL) {
|
||
|
PyErr_SetString(PyExc_TypeError,
|
||
|
"pyhttp_set_state: value is NULL");
|
||
|
return (-1);
|
||
|
}
|
||
|
|
||
|
Py_XDECREF(pyreq->req->py_object);
|
||
|
pyreq->req->py_object = value;
|
||
|
Py_INCREF(pyreq->req->py_object);
|
||
|
|
||
|
return (0);
|
||
|
}
|
||
|
|
||
|
static PyObject *
|
||
|
pyhttp_get_state(struct pyhttp_request *pyreq, void *closure)
|
||
|
{
|
||
|
if (pyreq->req->py_object == NULL)
|
||
|
Py_RETURN_NONE;
|
||
|
|
||
|
Py_INCREF(pyreq->req->py_object);
|
||
|
|
||
|
return (pyreq->req->py_object);
|
||
|
}
|
||
|
|
||
|
static PyObject *
|
||
|
pyhttp_get_method(struct pyhttp_request *pyreq, void *closure)
|
||
|
{
|
||
|
PyObject *method;
|
||
|
|
||
|
if ((method = PyLong_FromUnsignedLong(pyreq->req->method)) == NULL)
|
||
|
return (PyErr_NoMemory());
|
||
|
|
||
|
return (method);
|
||
|
}
|
||
|
|
||
|
static PyObject *
|
||
|
pyhttp_get_connection(struct pyhttp_request *pyreq, void *closure)
|
||
|
{
|
||
|
PyObject *pyc;
|
||
|
|
||
|
if ((pyc = pyconnection_alloc(pyreq->req->owner)) == NULL)
|
||
|
return (PyErr_NoMemory());
|
||
|
|
||
|
return (pyc);
|
||
|
}
|
||
|
#endif
|