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connection.c
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1622 lines (1356 loc) · 46.2 KB
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/* connection.c - the connection type
*
* Copyright (C) 2004-2010 Gerhard Häring <[email protected]>
*
* This file is part of pysqlite.
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
* 3. This notice may not be removed or altered from any source distribution.
*/
#include "cache.h"
#include "module.h"
#include "structmember.h"
#include "connection.h"
#include "statement.h"
#include "cursor.h"
#include "prepare_protocol.h"
#include "util.h"
#include "sqlitecompat.h"
#include "pythread.h"
#define ACTION_FINALIZE 1
#define ACTION_RESET 2
#if SQLITE_VERSION_NUMBER >= 3003008
#ifndef SQLITE_OMIT_LOAD_EXTENSION
#define HAVE_LOAD_EXTENSION
#endif
#endif
static int pysqlite_connection_set_isolation_level(pysqlite_Connection* self, PyObject* isolation_level);
static void _pysqlite_drop_unused_cursor_references(pysqlite_Connection* self);
static void _sqlite3_result_error(sqlite3_context* ctx, const char* errmsg, int len)
{
/* in older SQLite versions, calling sqlite3_result_error in callbacks
* triggers a bug in SQLite that leads either to irritating results or
* segfaults, depending on the SQLite version */
#if SQLITE_VERSION_NUMBER >= 3003003
sqlite3_result_error(ctx, errmsg, len);
#else
PyErr_SetString(pysqlite_OperationalError, errmsg);
#endif
}
int pysqlite_connection_init(pysqlite_Connection* self, PyObject* args, PyObject* kwargs)
{
static char *kwlist[] = {"database", "timeout", "detect_types", "isolation_level", "check_same_thread", "factory", "cached_statements", NULL, NULL};
char* database;
int detect_types = 0;
PyObject* isolation_level = NULL;
PyObject* factory = NULL;
int check_same_thread = 1;
int cached_statements = 100;
double timeout = 5.0;
int rc;
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s|diOiOi", kwlist,
&database, &timeout, &detect_types, &isolation_level, &check_same_thread, &factory, &cached_statements))
{
return -1;
}
self->initialized = 1;
self->begin_statement = NULL;
self->statement_cache = NULL;
self->statements = NULL;
self->cursors = NULL;
Py_INCREF(Py_None);
self->row_factory = Py_None;
Py_INCREF(&PyUnicode_Type);
self->text_factory = (PyObject*)&PyUnicode_Type;
Py_BEGIN_ALLOW_THREADS
rc = sqlite3_open(database, &self->db);
Py_END_ALLOW_THREADS
if (rc != SQLITE_OK) {
_pysqlite_seterror(self->db, NULL);
return -1;
}
if (!isolation_level) {
isolation_level = PyUnicode_FromString("");
if (!isolation_level) {
return -1;
}
} else {
Py_INCREF(isolation_level);
}
self->isolation_level = NULL;
pysqlite_connection_set_isolation_level(self, isolation_level);
Py_DECREF(isolation_level);
self->statement_cache = (pysqlite_Cache*)PyObject_CallFunction((PyObject*)&pysqlite_CacheType, "Oi", self, cached_statements);
if (PyErr_Occurred()) {
return -1;
}
self->created_statements = 0;
self->created_cursors = 0;
/* Create lists of weak references to statements/cursors */
self->statements = PyList_New(0);
self->cursors = PyList_New(0);
if (!self->statements || !self->cursors) {
return -1;
}
/* By default, the Cache class INCREFs the factory in its initializer, and
* decrefs it in its deallocator method. Since this would create a circular
* reference here, we're breaking it by decrementing self, and telling the
* cache class to not decref the factory (self) in its deallocator.
*/
self->statement_cache->decref_factory = 0;
Py_DECREF(self);
self->inTransaction = 0;
self->detect_types = detect_types;
self->timeout = timeout;
(void)sqlite3_busy_timeout(self->db, (int)(timeout*1000));
#ifdef WITH_THREAD
self->thread_ident = PyThread_get_thread_ident();
#endif
self->check_same_thread = check_same_thread;
self->function_pinboard = PyDict_New();
if (!self->function_pinboard) {
return -1;
}
self->collations = PyDict_New();
if (!self->collations) {
return -1;
}
self->Warning = pysqlite_Warning;
self->Error = pysqlite_Error;
self->InterfaceError = pysqlite_InterfaceError;
self->DatabaseError = pysqlite_DatabaseError;
self->DataError = pysqlite_DataError;
self->OperationalError = pysqlite_OperationalError;
self->IntegrityError = pysqlite_IntegrityError;
self->InternalError = pysqlite_InternalError;
self->ProgrammingError = pysqlite_ProgrammingError;
self->NotSupportedError = pysqlite_NotSupportedError;
return 0;
}
/* Empty the entire statement cache of this connection */
void pysqlite_flush_statement_cache(pysqlite_Connection* self)
{
pysqlite_Node* node;
pysqlite_Statement* statement;
node = self->statement_cache->first;
while (node) {
statement = (pysqlite_Statement*)(node->data);
(void)pysqlite_statement_finalize(statement);
node = node->next;
}
Py_DECREF(self->statement_cache);
self->statement_cache = (pysqlite_Cache*)PyObject_CallFunction((PyObject*)&pysqlite_CacheType, "O", self);
Py_DECREF(self);
self->statement_cache->decref_factory = 0;
}
/* action in (ACTION_RESET, ACTION_FINALIZE) */
void pysqlite_do_all_statements(pysqlite_Connection* self, int action, int reset_cursors)
{
int i;
PyObject* weakref;
PyObject* statement;
pysqlite_Cursor* cursor;
for (i = 0; i < PyList_Size(self->statements); i++) {
weakref = PyList_GetItem(self->statements, i);
statement = PyWeakref_GetObject(weakref);
if (statement != Py_None) {
Py_INCREF(statement);
if (action == ACTION_RESET) {
(void)pysqlite_statement_reset((pysqlite_Statement*)statement);
} else {
(void)pysqlite_statement_finalize((pysqlite_Statement*)statement);
}
Py_DECREF(statement);
}
}
if (reset_cursors) {
for (i = 0; i < PyList_Size(self->cursors); i++) {
weakref = PyList_GetItem(self->cursors, i);
cursor = (pysqlite_Cursor*)PyWeakref_GetObject(weakref);
if ((PyObject*)cursor != Py_None) {
cursor->reset = 1;
}
}
}
}
void pysqlite_connection_dealloc(pysqlite_Connection* self)
{
Py_XDECREF(self->statement_cache);
/* Clean up if user has not called .close() explicitly. */
if (self->db) {
Py_BEGIN_ALLOW_THREADS
sqlite3_close(self->db);
Py_END_ALLOW_THREADS
}
if (self->begin_statement) {
PyMem_Free(self->begin_statement);
}
Py_XDECREF(self->isolation_level);
Py_XDECREF(self->function_pinboard);
Py_XDECREF(self->row_factory);
Py_XDECREF(self->text_factory);
Py_XDECREF(self->collations);
Py_XDECREF(self->statements);
Py_XDECREF(self->cursors);
Py_TYPE(self)->tp_free((PyObject*)self);
}
/*
* Registers a cursor with the connection.
*
* 0 => error; 1 => ok
*/
int pysqlite_connection_register_cursor(pysqlite_Connection* connection, PyObject* cursor)
{
PyObject* weakref;
weakref = PyWeakref_NewRef((PyObject*)cursor, NULL);
if (!weakref) {
goto error;
}
if (PyList_Append(connection->cursors, weakref) != 0) {
Py_CLEAR(weakref);
goto error;
}
Py_DECREF(weakref);
return 1;
error:
return 0;
}
PyObject* pysqlite_connection_cursor(pysqlite_Connection* self, PyObject* args, PyObject* kwargs)
{
static char *kwlist[] = {"factory", NULL, NULL};
PyObject* factory = NULL;
PyObject* cursor;
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|O", kwlist,
&factory)) {
return NULL;
}
if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) {
return NULL;
}
if (factory == NULL) {
factory = (PyObject*)&pysqlite_CursorType;
}
cursor = PyObject_CallFunction(factory, "O", self);
_pysqlite_drop_unused_cursor_references(self);
if (cursor && self->row_factory != Py_None) {
Py_XDECREF(((pysqlite_Cursor*)cursor)->row_factory);
Py_INCREF(self->row_factory);
((pysqlite_Cursor*)cursor)->row_factory = self->row_factory;
}
return cursor;
}
PyObject* pysqlite_connection_close(pysqlite_Connection* self, PyObject* args)
{
int rc;
if (!pysqlite_check_thread(self)) {
return NULL;
}
pysqlite_do_all_statements(self, ACTION_FINALIZE, 1);
if (self->db) {
Py_BEGIN_ALLOW_THREADS
rc = sqlite3_close(self->db);
Py_END_ALLOW_THREADS
if (rc != SQLITE_OK) {
_pysqlite_seterror(self->db, NULL);
return NULL;
} else {
self->db = NULL;
}
}
Py_INCREF(Py_None);
return Py_None;
}
/*
* Checks if a connection object is usable (i. e. not closed).
*
* 0 => error; 1 => ok
*/
int pysqlite_check_connection(pysqlite_Connection* con)
{
if (!con->initialized) {
PyErr_SetString(pysqlite_ProgrammingError, "Base Connection.__init__ not called.");
return 0;
}
if (!con->db) {
PyErr_SetString(pysqlite_ProgrammingError, "Cannot operate on a closed database.");
return 0;
} else {
return 1;
}
}
PyObject* _pysqlite_connection_begin(pysqlite_Connection* self)
{
int rc;
const char* tail;
sqlite3_stmt* statement;
Py_BEGIN_ALLOW_THREADS
rc = sqlite3_prepare(self->db, self->begin_statement, -1, &statement, &tail);
Py_END_ALLOW_THREADS
if (rc != SQLITE_OK) {
_pysqlite_seterror(self->db, statement);
goto error;
}
rc = pysqlite_step(statement, self);
if (rc == SQLITE_DONE) {
self->inTransaction = 1;
} else {
_pysqlite_seterror(self->db, statement);
}
Py_BEGIN_ALLOW_THREADS
rc = sqlite3_finalize(statement);
Py_END_ALLOW_THREADS
if (rc != SQLITE_OK && !PyErr_Occurred()) {
_pysqlite_seterror(self->db, NULL);
}
error:
if (PyErr_Occurred()) {
return NULL;
} else {
Py_INCREF(Py_None);
return Py_None;
}
}
PyObject* pysqlite_connection_commit(pysqlite_Connection* self, PyObject* args)
{
int rc;
const char* tail;
sqlite3_stmt* statement;
if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) {
return NULL;
}
if (self->inTransaction) {
pysqlite_do_all_statements(self, ACTION_RESET, 0);
Py_BEGIN_ALLOW_THREADS
rc = sqlite3_prepare(self->db, "COMMIT", -1, &statement, &tail);
Py_END_ALLOW_THREADS
if (rc != SQLITE_OK) {
_pysqlite_seterror(self->db, NULL);
goto error;
}
rc = pysqlite_step(statement, self);
if (rc == SQLITE_DONE) {
self->inTransaction = 0;
} else {
_pysqlite_seterror(self->db, statement);
}
Py_BEGIN_ALLOW_THREADS
rc = sqlite3_finalize(statement);
Py_END_ALLOW_THREADS
if (rc != SQLITE_OK && !PyErr_Occurred()) {
_pysqlite_seterror(self->db, NULL);
}
}
error:
if (PyErr_Occurred()) {
return NULL;
} else {
Py_INCREF(Py_None);
return Py_None;
}
}
PyObject* pysqlite_connection_rollback(pysqlite_Connection* self, PyObject* args)
{
int rc;
const char* tail;
sqlite3_stmt* statement;
if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) {
return NULL;
}
if (self->inTransaction) {
pysqlite_do_all_statements(self, ACTION_RESET, 1);
Py_BEGIN_ALLOW_THREADS
rc = sqlite3_prepare(self->db, "ROLLBACK", -1, &statement, &tail);
Py_END_ALLOW_THREADS
if (rc != SQLITE_OK) {
_pysqlite_seterror(self->db, NULL);
goto error;
}
rc = pysqlite_step(statement, self);
if (rc == SQLITE_DONE) {
self->inTransaction = 0;
} else {
_pysqlite_seterror(self->db, statement);
}
Py_BEGIN_ALLOW_THREADS
rc = sqlite3_finalize(statement);
Py_END_ALLOW_THREADS
if (rc != SQLITE_OK && !PyErr_Occurred()) {
_pysqlite_seterror(self->db, NULL);
}
}
error:
if (PyErr_Occurred()) {
return NULL;
} else {
Py_INCREF(Py_None);
return Py_None;
}
}
static int
_pysqlite_set_result(sqlite3_context* context, PyObject* py_val)
{
if (py_val == Py_None) {
sqlite3_result_null(context);
} else if (PyLong_Check(py_val)) {
sqlite_int64 value = _pysqlite_long_as_int64(py_val);
if (value == -1 && PyErr_Occurred())
return -1;
sqlite3_result_int64(context, value);
} else if (PyFloat_Check(py_val)) {
sqlite3_result_double(context, PyFloat_AsDouble(py_val));
} else if (PyUnicode_Check(py_val)) {
const char *str = _PyUnicode_AsString(py_val);
if (str == NULL)
return -1;
sqlite3_result_text(context, str, -1, SQLITE_TRANSIENT);
} else if (PyObject_CheckBuffer(py_val)) {
const char* buffer;
Py_ssize_t buflen;
if (PyObject_AsCharBuffer(py_val, &buffer, &buflen) != 0) {
PyErr_SetString(PyExc_ValueError, "could not convert BLOB to buffer");
return -1;
}
sqlite3_result_blob(context, buffer, buflen, SQLITE_TRANSIENT);
} else {
return -1;
}
return 0;
}
PyObject* _pysqlite_build_py_params(sqlite3_context *context, int argc, sqlite3_value** argv)
{
PyObject* args;
int i;
sqlite3_value* cur_value;
PyObject* cur_py_value;
const char* val_str;
Py_ssize_t buflen;
args = PyTuple_New(argc);
if (!args) {
return NULL;
}
for (i = 0; i < argc; i++) {
cur_value = argv[i];
switch (sqlite3_value_type(argv[i])) {
case SQLITE_INTEGER:
cur_py_value = _pysqlite_long_from_int64(sqlite3_value_int64(cur_value));
break;
case SQLITE_FLOAT:
cur_py_value = PyFloat_FromDouble(sqlite3_value_double(cur_value));
break;
case SQLITE_TEXT:
val_str = (const char*)sqlite3_value_text(cur_value);
cur_py_value = PyUnicode_FromString(val_str);
/* TODO: have a way to show errors here */
if (!cur_py_value) {
PyErr_Clear();
Py_INCREF(Py_None);
cur_py_value = Py_None;
}
break;
case SQLITE_BLOB:
buflen = sqlite3_value_bytes(cur_value);
cur_py_value = PyBytes_FromStringAndSize(
sqlite3_value_blob(cur_value), buflen);
break;
case SQLITE_NULL:
default:
Py_INCREF(Py_None);
cur_py_value = Py_None;
}
if (!cur_py_value) {
Py_DECREF(args);
return NULL;
}
PyTuple_SetItem(args, i, cur_py_value);
}
return args;
}
void _pysqlite_func_callback(sqlite3_context* context, int argc, sqlite3_value** argv)
{
PyObject* args;
PyObject* py_func;
PyObject* py_retval = NULL;
int ok;
#ifdef WITH_THREAD
PyGILState_STATE threadstate;
threadstate = PyGILState_Ensure();
#endif
py_func = (PyObject*)sqlite3_user_data(context);
args = _pysqlite_build_py_params(context, argc, argv);
if (args) {
py_retval = PyObject_CallObject(py_func, args);
Py_DECREF(args);
}
ok = 0;
if (py_retval) {
ok = _pysqlite_set_result(context, py_retval) == 0;
Py_DECREF(py_retval);
}
if (!ok) {
if (_enable_callback_tracebacks) {
PyErr_Print();
} else {
PyErr_Clear();
}
_sqlite3_result_error(context, "user-defined function raised exception", -1);
}
#ifdef WITH_THREAD
PyGILState_Release(threadstate);
#endif
}
static void _pysqlite_step_callback(sqlite3_context *context, int argc, sqlite3_value** params)
{
PyObject* args;
PyObject* function_result = NULL;
PyObject* aggregate_class;
PyObject** aggregate_instance;
PyObject* stepmethod = NULL;
#ifdef WITH_THREAD
PyGILState_STATE threadstate;
threadstate = PyGILState_Ensure();
#endif
aggregate_class = (PyObject*)sqlite3_user_data(context);
aggregate_instance = (PyObject**)sqlite3_aggregate_context(context, sizeof(PyObject*));
if (*aggregate_instance == 0) {
*aggregate_instance = PyObject_CallFunction(aggregate_class, "");
if (PyErr_Occurred()) {
*aggregate_instance = 0;
if (_enable_callback_tracebacks) {
PyErr_Print();
} else {
PyErr_Clear();
}
_sqlite3_result_error(context, "user-defined aggregate's '__init__' method raised error", -1);
goto error;
}
}
stepmethod = PyObject_GetAttrString(*aggregate_instance, "step");
if (!stepmethod) {
goto error;
}
args = _pysqlite_build_py_params(context, argc, params);
if (!args) {
goto error;
}
function_result = PyObject_CallObject(stepmethod, args);
Py_DECREF(args);
if (!function_result) {
if (_enable_callback_tracebacks) {
PyErr_Print();
} else {
PyErr_Clear();
}
_sqlite3_result_error(context, "user-defined aggregate's 'step' method raised error", -1);
}
error:
Py_XDECREF(stepmethod);
Py_XDECREF(function_result);
#ifdef WITH_THREAD
PyGILState_Release(threadstate);
#endif
}
void _pysqlite_final_callback(sqlite3_context* context)
{
PyObject* function_result;
PyObject** aggregate_instance;
PyObject* aggregate_class;
int ok;
#ifdef WITH_THREAD
PyGILState_STATE threadstate;
threadstate = PyGILState_Ensure();
#endif
aggregate_class = (PyObject*)sqlite3_user_data(context);
aggregate_instance = (PyObject**)sqlite3_aggregate_context(context, sizeof(PyObject*));
if (!*aggregate_instance) {
/* this branch is executed if there was an exception in the aggregate's
* __init__ */
goto error;
}
function_result = PyObject_CallMethod(*aggregate_instance, "finalize", "");
Py_DECREF(*aggregate_instance);
ok = 0;
if (function_result) {
ok = _pysqlite_set_result(context, function_result) == 0;
Py_DECREF(function_result);
}
if (!ok) {
if (_enable_callback_tracebacks) {
PyErr_Print();
} else {
PyErr_Clear();
}
_sqlite3_result_error(context, "user-defined aggregate's 'finalize' method raised error", -1);
}
error:
#ifdef WITH_THREAD
PyGILState_Release(threadstate);
#endif
}
static void _pysqlite_drop_unused_statement_references(pysqlite_Connection* self)
{
PyObject* new_list;
PyObject* weakref;
int i;
/* we only need to do this once in a while */
if (self->created_statements++ < 200) {
return;
}
self->created_statements = 0;
new_list = PyList_New(0);
if (!new_list) {
return;
}
for (i = 0; i < PyList_Size(self->statements); i++) {
weakref = PyList_GetItem(self->statements, i);
if (PyWeakref_GetObject(weakref) != Py_None) {
if (PyList_Append(new_list, weakref) != 0) {
Py_DECREF(new_list);
return;
}
}
}
Py_DECREF(self->statements);
self->statements = new_list;
}
static void _pysqlite_drop_unused_cursor_references(pysqlite_Connection* self)
{
PyObject* new_list;
PyObject* weakref;
int i;
/* we only need to do this once in a while */
if (self->created_cursors++ < 200) {
return;
}
self->created_cursors = 0;
new_list = PyList_New(0);
if (!new_list) {
return;
}
for (i = 0; i < PyList_Size(self->cursors); i++) {
weakref = PyList_GetItem(self->cursors, i);
if (PyWeakref_GetObject(weakref) != Py_None) {
if (PyList_Append(new_list, weakref) != 0) {
Py_DECREF(new_list);
return;
}
}
}
Py_DECREF(self->cursors);
self->cursors = new_list;
}
PyObject* pysqlite_connection_create_function(pysqlite_Connection* self, PyObject* args, PyObject* kwargs)
{
static char *kwlist[] = {"name", "narg", "func", NULL, NULL};
PyObject* func;
char* name;
int narg;
int rc;
if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) {
return NULL;
}
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "siO", kwlist,
&name, &narg, &func))
{
return NULL;
}
rc = sqlite3_create_function(self->db, name, narg, SQLITE_UTF8, (void*)func, _pysqlite_func_callback, NULL, NULL);
if (rc != SQLITE_OK) {
/* Workaround for SQLite bug: no error code or string is available here */
PyErr_SetString(pysqlite_OperationalError, "Error creating function");
return NULL;
} else {
if (PyDict_SetItem(self->function_pinboard, func, Py_None) == -1)
return NULL;
Py_INCREF(Py_None);
return Py_None;
}
}
PyObject* pysqlite_connection_create_aggregate(pysqlite_Connection* self, PyObject* args, PyObject* kwargs)
{
PyObject* aggregate_class;
int n_arg;
char* name;
static char *kwlist[] = { "name", "n_arg", "aggregate_class", NULL };
int rc;
if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) {
return NULL;
}
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "siO:create_aggregate",
kwlist, &name, &n_arg, &aggregate_class)) {
return NULL;
}
rc = sqlite3_create_function(self->db, name, n_arg, SQLITE_UTF8, (void*)aggregate_class, 0, &_pysqlite_step_callback, &_pysqlite_final_callback);
if (rc != SQLITE_OK) {
/* Workaround for SQLite bug: no error code or string is available here */
PyErr_SetString(pysqlite_OperationalError, "Error creating aggregate");
return NULL;
} else {
if (PyDict_SetItem(self->function_pinboard, aggregate_class, Py_None) == -1)
return NULL;
Py_INCREF(Py_None);
return Py_None;
}
}
static int _authorizer_callback(void* user_arg, int action, const char* arg1, const char* arg2 , const char* dbname, const char* access_attempt_source)
{
PyObject *ret;
int rc;
#ifdef WITH_THREAD
PyGILState_STATE gilstate;
gilstate = PyGILState_Ensure();
#endif
ret = PyObject_CallFunction((PyObject*)user_arg, "issss", action, arg1, arg2, dbname, access_attempt_source);
if (!ret) {
if (_enable_callback_tracebacks) {
PyErr_Print();
} else {
PyErr_Clear();
}
rc = SQLITE_DENY;
} else {
if (PyLong_Check(ret)) {
rc = _PyLong_AsInt(ret);
if (rc == -1 && PyErr_Occurred())
rc = SQLITE_DENY;
} else {
rc = SQLITE_DENY;
}
Py_DECREF(ret);
}
#ifdef WITH_THREAD
PyGILState_Release(gilstate);
#endif
return rc;
}
static int _progress_handler(void* user_arg)
{
int rc;
PyObject *ret;
#ifdef WITH_THREAD
PyGILState_STATE gilstate;
gilstate = PyGILState_Ensure();
#endif
ret = PyObject_CallFunction((PyObject*)user_arg, "");
if (!ret) {
if (_enable_callback_tracebacks) {
PyErr_Print();
} else {
PyErr_Clear();
}
/* abort query if error occurred */
rc = 1;
} else {
rc = (int)PyObject_IsTrue(ret);
Py_DECREF(ret);
}
#ifdef WITH_THREAD
PyGILState_Release(gilstate);
#endif
return rc;
}
static PyObject* pysqlite_connection_set_authorizer(pysqlite_Connection* self, PyObject* args, PyObject* kwargs)
{
PyObject* authorizer_cb;
static char *kwlist[] = { "authorizer_callback", NULL };
int rc;
if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) {
return NULL;
}
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O:set_authorizer",
kwlist, &authorizer_cb)) {
return NULL;
}
rc = sqlite3_set_authorizer(self->db, _authorizer_callback, (void*)authorizer_cb);
if (rc != SQLITE_OK) {
PyErr_SetString(pysqlite_OperationalError, "Error setting authorizer callback");
return NULL;
} else {
if (PyDict_SetItem(self->function_pinboard, authorizer_cb, Py_None) == -1)
return NULL;
Py_INCREF(Py_None);
return Py_None;
}
}
static PyObject* pysqlite_connection_set_progress_handler(pysqlite_Connection* self, PyObject* args, PyObject* kwargs)
{
PyObject* progress_handler;
int n;
static char *kwlist[] = { "progress_handler", "n", NULL };
if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) {
return NULL;
}
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "Oi:set_progress_handler",
kwlist, &progress_handler, &n)) {
return NULL;
}
if (progress_handler == Py_None) {
/* None clears the progress handler previously set */
sqlite3_progress_handler(self->db, 0, 0, (void*)0);
} else {
sqlite3_progress_handler(self->db, n, _progress_handler, progress_handler);
if (PyDict_SetItem(self->function_pinboard, progress_handler, Py_None) == -1)
return NULL;
}
Py_INCREF(Py_None);
return Py_None;
}
#ifdef HAVE_LOAD_EXTENSION
static PyObject* pysqlite_enable_load_extension(pysqlite_Connection* self, PyObject* args)
{
int rc;
int onoff;
if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) {
return NULL;
}
if (!PyArg_ParseTuple(args, "i", &onoff)) {
return NULL;
}
rc = sqlite3_enable_load_extension(self->db, onoff);
if (rc != SQLITE_OK) {
PyErr_SetString(pysqlite_OperationalError, "Error enabling load extension");
return NULL;
} else {
Py_INCREF(Py_None);
return Py_None;
}