| /* connection.c - the connection type |
| * |
| * Copyright (C) 2004-2006 Gerhard Häring <gh@ghaering.de> |
| * |
| * 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 "connection.h" |
| #include "statement.h" |
| #include "cursor.h" |
| #include "prepare_protocol.h" |
| #include "util.h" |
| #include "sqlitecompat.h" |
| |
| #include "pythread.h" |
| |
| static int pysqlite_connection_set_isolation_level(pysqlite_Connection* self, PyObject* isolation_level); |
| |
| |
| 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->begin_statement = NULL; |
| |
| self->statement_cache = NULL; |
| self->statements = 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); |
| return -1; |
| } |
| |
| if (!isolation_level) { |
| isolation_level = PyString_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->statements = PyList_New(0); |
| if (!self->statements) { |
| return -1; |
| } |
| self->created_statements = 0; |
| |
| /* 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)); |
| |
| self->thread_ident = PyThread_get_thread_ident(); |
| 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; |
| } |
| |
| void pysqlite_reset_all_statements(pysqlite_Connection* self) |
| { |
| int i; |
| PyObject* weakref; |
| PyObject* statement; |
| |
| for (i = 0; i < PyList_Size(self->statements); i++) { |
| weakref = PyList_GetItem(self->statements, i); |
| statement = PyWeakref_GetObject(weakref); |
| if (statement != Py_None) { |
| (void)pysqlite_statement_reset((pysqlite_Statement*)statement); |
| } |
| } |
| } |
| |
| 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); |
| |
| self->ob_type->tp_free((PyObject*)self); |
| } |
| |
| 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); |
| |
| 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_flush_statement_cache(self); |
| |
| if (self->db) { |
| Py_BEGIN_ALLOW_THREADS |
| rc = sqlite3_close(self->db); |
| Py_END_ALLOW_THREADS |
| |
| if (rc != SQLITE_OK) { |
| _pysqlite_seterror(self->db); |
| 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->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); |
| goto error; |
| } |
| |
| rc = _sqlite_step_with_busyhandler(statement, self); |
| if (rc == SQLITE_DONE) { |
| self->inTransaction = 1; |
| } else { |
| _pysqlite_seterror(self->db); |
| } |
| |
| Py_BEGIN_ALLOW_THREADS |
| rc = sqlite3_finalize(statement); |
| Py_END_ALLOW_THREADS |
| |
| if (rc != SQLITE_OK && !PyErr_Occurred()) { |
| _pysqlite_seterror(self->db); |
| } |
| |
| 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) { |
| 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); |
| goto error; |
| } |
| |
| rc = _sqlite_step_with_busyhandler(statement, self); |
| if (rc == SQLITE_DONE) { |
| self->inTransaction = 0; |
| } else { |
| _pysqlite_seterror(self->db); |
| } |
| |
| Py_BEGIN_ALLOW_THREADS |
| rc = sqlite3_finalize(statement); |
| Py_END_ALLOW_THREADS |
| if (rc != SQLITE_OK && !PyErr_Occurred()) { |
| _pysqlite_seterror(self->db); |
| } |
| |
| } |
| |
| 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_reset_all_statements(self); |
| |
| 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); |
| goto error; |
| } |
| |
| rc = _sqlite_step_with_busyhandler(statement, self); |
| if (rc == SQLITE_DONE) { |
| self->inTransaction = 0; |
| } else { |
| _pysqlite_seterror(self->db); |
| } |
| |
| Py_BEGIN_ALLOW_THREADS |
| rc = sqlite3_finalize(statement); |
| Py_END_ALLOW_THREADS |
| if (rc != SQLITE_OK && !PyErr_Occurred()) { |
| _pysqlite_seterror(self->db); |
| } |
| |
| } |
| |
| error: |
| if (PyErr_Occurred()) { |
| return NULL; |
| } else { |
| Py_INCREF(Py_None); |
| return Py_None; |
| } |
| } |
| |
| void _pysqlite_set_result(sqlite3_context* context, PyObject* py_val) |
| { |
| long longval; |
| const char* buffer; |
| Py_ssize_t buflen; |
| PyObject* stringval; |
| |
| if ((!py_val) || PyErr_Occurred()) { |
| sqlite3_result_null(context); |
| } else if (py_val == Py_None) { |
| sqlite3_result_null(context); |
| } else if (PyInt_Check(py_val)) { |
| longval = PyInt_AsLong(py_val); |
| sqlite3_result_int64(context, (PY_LONG_LONG)longval); |
| } else if (PyFloat_Check(py_val)) { |
| sqlite3_result_double(context, PyFloat_AsDouble(py_val)); |
| } else if (PyBuffer_Check(py_val)) { |
| if (PyObject_AsCharBuffer(py_val, &buffer, &buflen) != 0) { |
| PyErr_SetString(PyExc_ValueError, "could not convert BLOB to buffer"); |
| } else { |
| sqlite3_result_blob(context, buffer, buflen, SQLITE_TRANSIENT); |
| } |
| } else if (PyString_Check(py_val)) { |
| sqlite3_result_text(context, PyString_AsString(py_val), -1, SQLITE_TRANSIENT); |
| } else if (PyUnicode_Check(py_val)) { |
| stringval = PyUnicode_AsUTF8String(py_val); |
| if (stringval) { |
| sqlite3_result_text(context, PyString_AsString(stringval), -1, SQLITE_TRANSIENT); |
| Py_DECREF(stringval); |
| } |
| } else { |
| /* TODO: raise error */ |
| } |
| } |
| |
| 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_LONG_LONG val_int; |
| Py_ssize_t buflen; |
| void* raw_buffer; |
| |
| 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: |
| val_int = sqlite3_value_int64(cur_value); |
| cur_py_value = PyInt_FromLong((long)val_int); |
| 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_DecodeUTF8(val_str, strlen(val_str), NULL); |
| /* 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 = PyBuffer_New(buflen); |
| if (!cur_py_value) { |
| break; |
| } |
| if (PyObject_AsWriteBuffer(cur_py_value, &raw_buffer, &buflen)) { |
| Py_DECREF(cur_py_value); |
| cur_py_value = NULL; |
| break; |
| } |
| memcpy(raw_buffer, 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; |
| |
| PyGILState_STATE threadstate; |
| |
| threadstate = PyGILState_Ensure(); |
| |
| 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); |
| } |
| |
| if (py_retval) { |
| _pysqlite_set_result(context, py_retval); |
| Py_DECREF(py_retval); |
| } else { |
| if (_enable_callback_tracebacks) { |
| PyErr_Print(); |
| } else { |
| PyErr_Clear(); |
| } |
| _sqlite3_result_error(context, "user-defined function raised exception", -1); |
| } |
| |
| PyGILState_Release(threadstate); |
| } |
| |
| 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; |
| |
| PyGILState_STATE threadstate; |
| |
| threadstate = PyGILState_Ensure(); |
| |
| 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); |
| |
| PyGILState_Release(threadstate); |
| } |
| |
| void _pysqlite_final_callback(sqlite3_context* context) |
| { |
| PyObject* function_result = NULL; |
| PyObject** aggregate_instance; |
| PyObject* aggregate_class; |
| |
| PyGILState_STATE threadstate; |
| |
| threadstate = PyGILState_Ensure(); |
| |
| 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", ""); |
| if (!function_result) { |
| if (_enable_callback_tracebacks) { |
| PyErr_Print(); |
| } else { |
| PyErr_Clear(); |
| } |
| _sqlite3_result_error(context, "user-defined aggregate's 'finalize' method raised error", -1); |
| } else { |
| _pysqlite_set_result(context, function_result); |
| } |
| |
| error: |
| Py_XDECREF(*aggregate_instance); |
| Py_XDECREF(function_result); |
| |
| PyGILState_Release(threadstate); |
| } |
| |
| 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; |
| } |
| |
| 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 (!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 { |
| PyDict_SetItem(self->function_pinboard, func, Py_None); |
| |
| 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 (!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 { |
| PyDict_SetItem(self->function_pinboard, aggregate_class, Py_None); |
| |
| 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; |
| PyGILState_STATE gilstate; |
| |
| gilstate = PyGILState_Ensure(); |
| 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 (PyInt_Check(ret)) { |
| rc = (int)PyInt_AsLong(ret); |
| } else { |
| rc = SQLITE_DENY; |
| } |
| Py_DECREF(ret); |
| } |
| |
| PyGILState_Release(gilstate); |
| return rc; |
| } |
| |
| PyObject* pysqlite_connection_set_authorizer(pysqlite_Connection* self, PyObject* args, PyObject* kwargs) |
| { |
| PyObject* authorizer_cb; |
| |
| static char *kwlist[] = { "authorizer_callback", NULL }; |
| int rc; |
| |
| 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 { |
| PyDict_SetItem(self->function_pinboard, authorizer_cb, Py_None); |
| |
| Py_INCREF(Py_None); |
| return Py_None; |
| } |
| } |
| |
| int pysqlite_check_thread(pysqlite_Connection* self) |
| { |
| if (self->check_same_thread) { |
| if (PyThread_get_thread_ident() != self->thread_ident) { |
| PyErr_Format(pysqlite_ProgrammingError, |
| "SQLite objects created in a thread can only be used in that same thread." |
| "The object was created in thread id %ld and this is thread id %ld", |
| self->thread_ident, PyThread_get_thread_ident()); |
| return 0; |
| } |
| |
| } |
| |
| return 1; |
| } |
| |
| static PyObject* pysqlite_connection_get_isolation_level(pysqlite_Connection* self, void* unused) |
| { |
| Py_INCREF(self->isolation_level); |
| return self->isolation_level; |
| } |
| |
| static PyObject* pysqlite_connection_get_total_changes(pysqlite_Connection* self, void* unused) |
| { |
| if (!pysqlite_check_connection(self)) { |
| return NULL; |
| } else { |
| return Py_BuildValue("i", sqlite3_total_changes(self->db)); |
| } |
| } |
| |
| static int pysqlite_connection_set_isolation_level(pysqlite_Connection* self, PyObject* isolation_level) |
| { |
| PyObject* res; |
| PyObject* begin_statement; |
| |
| Py_XDECREF(self->isolation_level); |
| |
| if (self->begin_statement) { |
| PyMem_Free(self->begin_statement); |
| self->begin_statement = NULL; |
| } |
| |
| if (isolation_level == Py_None) { |
| Py_INCREF(Py_None); |
| self->isolation_level = Py_None; |
| |
| res = pysqlite_connection_commit(self, NULL); |
| if (!res) { |
| return -1; |
| } |
| Py_DECREF(res); |
| |
| self->inTransaction = 0; |
| } else { |
| Py_INCREF(isolation_level); |
| self->isolation_level = isolation_level; |
| |
| begin_statement = PyString_FromString("BEGIN "); |
| if (!begin_statement) { |
| return -1; |
| } |
| PyString_Concat(&begin_statement, isolation_level); |
| if (!begin_statement) { |
| return -1; |
| } |
| |
| self->begin_statement = PyMem_Malloc(PyString_Size(begin_statement) + 2); |
| if (!self->begin_statement) { |
| return -1; |
| } |
| |
| strcpy(self->begin_statement, PyString_AsString(begin_statement)); |
| Py_DECREF(begin_statement); |
| } |
| |
| return 0; |
| } |
| |
| PyObject* pysqlite_connection_call(pysqlite_Connection* self, PyObject* args, PyObject* kwargs) |
| { |
| PyObject* sql; |
| pysqlite_Statement* statement; |
| PyObject* weakref; |
| int rc; |
| |
| if (!PyArg_ParseTuple(args, "O", &sql)) { |
| return NULL; |
| } |
| |
| _pysqlite_drop_unused_statement_references(self); |
| |
| statement = PyObject_New(pysqlite_Statement, &pysqlite_StatementType); |
| if (!statement) { |
| return NULL; |
| } |
| |
| rc = pysqlite_statement_create(statement, self, sql); |
| |
| if (rc != SQLITE_OK) { |
| if (rc == PYSQLITE_TOO_MUCH_SQL) { |
| PyErr_SetString(pysqlite_Warning, "You can only execute one statement at a time."); |
| } else if (rc == PYSQLITE_SQL_WRONG_TYPE) { |
| PyErr_SetString(pysqlite_Warning, "SQL is of wrong type. Must be string or unicode."); |
| } else { |
| _pysqlite_seterror(self->db); |
| } |
| |
| Py_DECREF(statement); |
| statement = 0; |
| } else { |
| weakref = PyWeakref_NewRef((PyObject*)statement, NULL); |
| if (!weakref) { |
| Py_DECREF(statement); |
| statement = 0; |
| goto error; |
| } |
| |
| if (PyList_Append(self->statements, weakref) != 0) { |
| Py_DECREF(weakref); |
| statement = 0; |
| goto error; |
| } |
| |
| Py_DECREF(weakref); |
| } |
| |
| error: |
| return (PyObject*)statement; |
| } |
| |
| PyObject* pysqlite_connection_execute(pysqlite_Connection* self, PyObject* args, PyObject* kwargs) |
| { |
| PyObject* cursor = 0; |
| PyObject* result = 0; |
| PyObject* method = 0; |
| |
| cursor = PyObject_CallMethod((PyObject*)self, "cursor", ""); |
| if (!cursor) { |
| goto error; |
| } |
| |
| method = PyObject_GetAttrString(cursor, "execute"); |
| if (!method) { |
| Py_DECREF(cursor); |
| cursor = 0; |
| goto error; |
| } |
| |
| result = PyObject_CallObject(method, args); |
| if (!result) { |
| Py_DECREF(cursor); |
| cursor = 0; |
| } |
| |
| error: |
| Py_XDECREF(result); |
| Py_XDECREF(method); |
| |
| return cursor; |
| } |
| |
| PyObject* pysqlite_connection_executemany(pysqlite_Connection* self, PyObject* args, PyObject* kwargs) |
| { |
| PyObject* cursor = 0; |
| PyObject* result = 0; |
| PyObject* method = 0; |
| |
| cursor = PyObject_CallMethod((PyObject*)self, "cursor", ""); |
| if (!cursor) { |
| goto error; |
| } |
| |
| method = PyObject_GetAttrString(cursor, "executemany"); |
| if (!method) { |
| Py_DECREF(cursor); |
| cursor = 0; |
| goto error; |
| } |
| |
| result = PyObject_CallObject(method, args); |
| if (!result) { |
| Py_DECREF(cursor); |
| cursor = 0; |
| } |
| |
| error: |
| Py_XDECREF(result); |
| Py_XDECREF(method); |
| |
| return cursor; |
| } |
| |
| PyObject* pysqlite_connection_executescript(pysqlite_Connection* self, PyObject* args, PyObject* kwargs) |
| { |
| PyObject* cursor = 0; |
| PyObject* result = 0; |
| PyObject* method = 0; |
| |
| cursor = PyObject_CallMethod((PyObject*)self, "cursor", ""); |
| if (!cursor) { |
| goto error; |
| } |
| |
| method = PyObject_GetAttrString(cursor, "executescript"); |
| if (!method) { |
| Py_DECREF(cursor); |
| cursor = 0; |
| goto error; |
| } |
| |
| result = PyObject_CallObject(method, args); |
| if (!result) { |
| Py_DECREF(cursor); |
| cursor = 0; |
| } |
| |
| error: |
| Py_XDECREF(result); |
| Py_XDECREF(method); |
| |
| return cursor; |
| } |
| |
| /* ------------------------- COLLATION CODE ------------------------ */ |
| |
| static int |
| pysqlite_collation_callback( |
| void* context, |
| int text1_length, const void* text1_data, |
| int text2_length, const void* text2_data) |
| { |
| PyObject* callback = (PyObject*)context; |
| PyObject* string1 = 0; |
| PyObject* string2 = 0; |
| PyGILState_STATE gilstate; |
| |
| PyObject* retval = NULL; |
| int result = 0; |
| |
| gilstate = PyGILState_Ensure(); |
| |
| if (PyErr_Occurred()) { |
| goto finally; |
| } |
| |
| string1 = PyString_FromStringAndSize((const char*)text1_data, text1_length); |
| string2 = PyString_FromStringAndSize((const char*)text2_data, text2_length); |
| |
| if (!string1 || !string2) { |
| goto finally; /* failed to allocate strings */ |
| } |
| |
| retval = PyObject_CallFunctionObjArgs(callback, string1, string2, NULL); |
| |
| if (!retval) { |
| /* execution failed */ |
| goto finally; |
| } |
| |
| result = PyInt_AsLong(retval); |
| if (PyErr_Occurred()) { |
| result = 0; |
| } |
| |
| finally: |
| Py_XDECREF(string1); |
| Py_XDECREF(string2); |
| Py_XDECREF(retval); |
| |
| PyGILState_Release(gilstate); |
| |
| return result; |
| } |
| |
| static PyObject * |
| pysqlite_connection_interrupt(pysqlite_Connection* self, PyObject* args) |
| { |
| PyObject* retval = NULL; |
| |
| if (!pysqlite_check_connection(self)) { |
| goto finally; |
| } |
| |
| sqlite3_interrupt(self->db); |
| |
| Py_INCREF(Py_None); |
| retval = Py_None; |
| |
| finally: |
| return retval; |
| } |
| |
| static PyObject * |
| pysqlite_connection_create_collation(pysqlite_Connection* self, PyObject* args) |
| { |
| PyObject* callable; |
| PyObject* uppercase_name = 0; |
| PyObject* name; |
| PyObject* retval; |
| char* chk; |
| int rc; |
| |
| if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) { |
| goto finally; |
| } |
| |
| if (!PyArg_ParseTuple(args, "O!O:create_collation(name, callback)", &PyString_Type, &name, &callable)) { |
| goto finally; |
| } |
| |
| uppercase_name = PyObject_CallMethod(name, "upper", ""); |
| if (!uppercase_name) { |
| goto finally; |
| } |
| |
| chk = PyString_AsString(uppercase_name); |
| while (*chk) { |
| if ((*chk >= '0' && *chk <= '9') |
| || (*chk >= 'A' && *chk <= 'Z') |
| || (*chk == '_')) |
| { |
| chk++; |
| } else { |
| PyErr_SetString(pysqlite_ProgrammingError, "invalid character in collation name"); |
| goto finally; |
| } |
| } |
| |
| if (callable != Py_None && !PyCallable_Check(callable)) { |
| PyErr_SetString(PyExc_TypeError, "parameter must be callable"); |
| goto finally; |
| } |
| |
| if (callable != Py_None) { |
| PyDict_SetItem(self->collations, uppercase_name, callable); |
| } else { |
| PyDict_DelItem(self->collations, uppercase_name); |
| } |
| |
| rc = sqlite3_create_collation(self->db, |
| PyString_AsString(uppercase_name), |
| SQLITE_UTF8, |
| (callable != Py_None) ? callable : NULL, |
| (callable != Py_None) ? pysqlite_collation_callback : NULL); |
| if (rc != SQLITE_OK) { |
| PyDict_DelItem(self->collations, uppercase_name); |
| _pysqlite_seterror(self->db); |
| goto finally; |
| } |
| |
| finally: |
| Py_XDECREF(uppercase_name); |
| |
| if (PyErr_Occurred()) { |
| retval = NULL; |
| } else { |
| Py_INCREF(Py_None); |
| retval = Py_None; |
| } |
| |
| return retval; |
| } |
| |
| static char connection_doc[] = |
| PyDoc_STR("SQLite database connection object."); |
| |
| static PyGetSetDef connection_getset[] = { |
| {"isolation_level", (getter)pysqlite_connection_get_isolation_level, (setter)pysqlite_connection_set_isolation_level}, |
| {"total_changes", (getter)pysqlite_connection_get_total_changes, (setter)0}, |
| {NULL} |
| }; |
| |
| static PyMethodDef connection_methods[] = { |
| {"cursor", (PyCFunction)pysqlite_connection_cursor, METH_VARARGS|METH_KEYWORDS, |
| PyDoc_STR("Return a cursor for the connection.")}, |
| {"close", (PyCFunction)pysqlite_connection_close, METH_NOARGS, |
| PyDoc_STR("Closes the connection.")}, |
| {"commit", (PyCFunction)pysqlite_connection_commit, METH_NOARGS, |
| PyDoc_STR("Commit the current transaction.")}, |
| {"rollback", (PyCFunction)pysqlite_connection_rollback, METH_NOARGS, |
| PyDoc_STR("Roll back the current transaction.")}, |
| {"create_function", (PyCFunction)pysqlite_connection_create_function, METH_VARARGS|METH_KEYWORDS, |
| PyDoc_STR("Creates a new function. Non-standard.")}, |
| {"create_aggregate", (PyCFunction)pysqlite_connection_create_aggregate, METH_VARARGS|METH_KEYWORDS, |
| PyDoc_STR("Creates a new aggregate. Non-standard.")}, |
| {"set_authorizer", (PyCFunction)pysqlite_connection_set_authorizer, METH_VARARGS|METH_KEYWORDS, |
| PyDoc_STR("Sets authorizer callback. Non-standard.")}, |
| {"execute", (PyCFunction)pysqlite_connection_execute, METH_VARARGS, |
| PyDoc_STR("Executes a SQL statement. Non-standard.")}, |
| {"executemany", (PyCFunction)pysqlite_connection_executemany, METH_VARARGS, |
| PyDoc_STR("Repeatedly executes a SQL statement. Non-standard.")}, |
| {"executescript", (PyCFunction)pysqlite_connection_executescript, METH_VARARGS, |
| PyDoc_STR("Executes a multiple SQL statements at once. Non-standard.")}, |
| {"create_collation", (PyCFunction)pysqlite_connection_create_collation, METH_VARARGS, |
| PyDoc_STR("Creates a collation function. Non-standard.")}, |
| {"interrupt", (PyCFunction)pysqlite_connection_interrupt, METH_NOARGS, |
| PyDoc_STR("Abort any pending database operation. Non-standard.")}, |
| {NULL, NULL} |
| }; |
| |
| static struct PyMemberDef connection_members[] = |
| { |
| {"Warning", T_OBJECT, offsetof(pysqlite_Connection, Warning), RO}, |
| {"Error", T_OBJECT, offsetof(pysqlite_Connection, Error), RO}, |
| {"InterfaceError", T_OBJECT, offsetof(pysqlite_Connection, InterfaceError), RO}, |
| {"DatabaseError", T_OBJECT, offsetof(pysqlite_Connection, DatabaseError), RO}, |
| {"DataError", T_OBJECT, offsetof(pysqlite_Connection, DataError), RO}, |
| {"OperationalError", T_OBJECT, offsetof(pysqlite_Connection, OperationalError), RO}, |
| {"IntegrityError", T_OBJECT, offsetof(pysqlite_Connection, IntegrityError), RO}, |
| {"InternalError", T_OBJECT, offsetof(pysqlite_Connection, InternalError), RO}, |
| {"ProgrammingError", T_OBJECT, offsetof(pysqlite_Connection, ProgrammingError), RO}, |
| {"NotSupportedError", T_OBJECT, offsetof(pysqlite_Connection, NotSupportedError), RO}, |
| {"row_factory", T_OBJECT, offsetof(pysqlite_Connection, row_factory)}, |
| {"text_factory", T_OBJECT, offsetof(pysqlite_Connection, text_factory)}, |
| {NULL} |
| }; |
| |
| PyTypeObject pysqlite_ConnectionType = { |
| PyObject_HEAD_INIT(NULL) |
| 0, /* ob_size */ |
| MODULE_NAME ".Connection", /* tp_name */ |
| sizeof(pysqlite_Connection), /* tp_basicsize */ |
| 0, /* tp_itemsize */ |
| (destructor)pysqlite_connection_dealloc, /* tp_dealloc */ |
| 0, /* tp_print */ |
| 0, /* tp_getattr */ |
| 0, /* tp_setattr */ |
| 0, /* tp_compare */ |
| 0, /* tp_repr */ |
| 0, /* tp_as_number */ |
| 0, /* tp_as_sequence */ |
| 0, /* tp_as_mapping */ |
| 0, /* tp_hash */ |
| (ternaryfunc)pysqlite_connection_call, /* tp_call */ |
| 0, /* tp_str */ |
| 0, /* tp_getattro */ |
| 0, /* tp_setattro */ |
| 0, /* tp_as_buffer */ |
| Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, /* tp_flags */ |
| connection_doc, /* tp_doc */ |
| 0, /* tp_traverse */ |
| 0, /* tp_clear */ |
| 0, /* tp_richcompare */ |
| 0, /* tp_weaklistoffset */ |
| 0, /* tp_iter */ |
| 0, /* tp_iternext */ |
| connection_methods, /* tp_methods */ |
| connection_members, /* tp_members */ |
| connection_getset, /* tp_getset */ |
| 0, /* tp_base */ |
| 0, /* tp_dict */ |
| 0, /* tp_descr_get */ |
| 0, /* tp_descr_set */ |
| 0, /* tp_dictoffset */ |
| (initproc)pysqlite_connection_init, /* tp_init */ |
| 0, /* tp_alloc */ |
| 0, /* tp_new */ |
| 0 /* tp_free */ |
| }; |
| |
| extern int pysqlite_connection_setup_types(void) |
| { |
| pysqlite_ConnectionType.tp_new = PyType_GenericNew; |
| return PyType_Ready(&pysqlite_ConnectionType); |
| } |