682 lines
24 KiB
SourcePawn
682 lines
24 KiB
SourcePawn
/**
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* vim: set ts=4 :
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* =============================================================================
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* SourceMod (C)2004-2008 AlliedModders LLC. All rights reserved.
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* =============================================================================
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*
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* This file is part of the SourceMod/SourcePawn SDK.
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*
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* This program is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License, version 3.0, as published by the
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* Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* As a special exception, AlliedModders LLC gives you permission to link the
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* code of this program (as well as its derivative works) to "Half-Life 2," the
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* "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
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* by the Valve Corporation. You must obey the GNU General Public License in
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* all respects for all other code used. Additionally, AlliedModders LLC grants
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* this exception to all derivative works. AlliedModders LLC defines further
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* exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
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* or <http://www.sourcemod.net/license.php>.
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*
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* Version: $Id$
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*/
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#if defined _dbi_included
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#endinput
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#endif
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#define _dbi_included
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/**
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* @handle Driver
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*
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* Contains information about an SQL driver.
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*/
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/**
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* @handle Database
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*
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* Contains information about a database connection.
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*/
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/**
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* @handle Query
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*
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* Contains information about an active query and its
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* result sets.
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*/
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/**
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* @handle Statement : Query
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*
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* Extends a Query Handle and can be used as a Query Handle.
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* Statement Handles are for prepared queries and contain
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* their own function for binding parameters. Statement
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* Handles can be used instead of database Handles in a few
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* select functions.
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*/
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/**
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* Describes a database field fetch status.
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*/
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enum DBResult
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{
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DBVal_Error = 0, /**< Column number/field is invalid. */
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DBVal_TypeMismatch = 1, /**< You cannot retrieve this data with this type. */
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DBVal_Null = 2, /**< Field has no data (NULL) */
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DBVal_Data = 3, /**< Field has data */
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};
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/**
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* Describes binding types.
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*/
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enum DBBindType
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{
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DBBind_Int = 0, /**< Bind an integer. */
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DBBind_Float = 1, /**< Bind a float. */
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DBBind_String = 2, /**< Bind a string. */
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};
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/**
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* Threading priority level.
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*/
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enum DBPriority
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{
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DBPrio_High = 0, /**< High priority. */
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DBPrio_Normal = 1, /**< Normal priority. */
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DBPrio_Low = 2, /**< Low priority. */
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};
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/**
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* Creates an SQL connection from a named configuration.
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*
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* @param confname Named configuration.
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* @param persistent True to re-use a previous persistent connection if
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* possible, false otherwise.
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* @param error Error buffer.
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* @param maxlength Maximum length of the error buffer.
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* @return A database connection Handle, or INVALID_HANDLE on failure.
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*/
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native Handle:SQL_Connect(const String:confname[], bool:persistent, String:error[], maxlength);
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/**
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* Creates a default SQL connection.
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*
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* @param error Error buffer.
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* @param maxlength Maximum length of the error buffer.
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* @param persistent True to re-use a previous persistent connection
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* if possible, false otherwise.
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* @return A database connection Handle, or INVALID_HANDLE on failure.
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* On failure the error buffer will be filled with a message.
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*/
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stock Handle:SQL_DefConnect(String:error[], maxlength, bool:persistent=true)
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{
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return SQL_Connect("default", persistent, error, maxlength);
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}
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/**
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* Connects to a database using key value pairs containing the database info.
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* The key/value pairs should match what would be in databases.cfg.
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*
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* I.e. "driver" should be "default" or a driver name (or ommitted for
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* the default). For SQLite, only the "database" parameter is needed in addition.
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* For drivers which require external connections, more of the parameters may be
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* needed.
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*
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* In general it is discouraged to use this function. Connections should go through
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* databases.cfg for greatest flexibility on behalf of users.
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*
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* @param keyvalues Key/value pairs from a KeyValues handle, describing the connection.
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* @param error Error buffer.
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* @param maxlength Maximum length of the error buffer.
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* @return A database connection Handle, or INVALID_HANDLE on failure.
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* On failure the error buffer will be filled with a message.
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* @error Invalid KeyValues handle.
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*/
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native Handle:SQL_ConnectCustom(Handle:keyvalues,
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String:error[],
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maxlength,
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bool:persistent);
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/**
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* Grabs a handle to an SQLite database, creating one if it does not exist.
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*
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* Unless there are extenuating circumstances, you should consider using "sourcemod-local" as the
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* database name. This provides some unification between plugins on behalf of users.
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*
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* As a precaution, you should always create some sort of unique prefix to your table names so
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* there are no conflicts, and you should never drop or modify tables that you do not own.
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*
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* @param database Database name.
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* @param error Error buffer.
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* @param maxlength Maximum length of the error buffer.
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* @return A database connection Handle, or INVALID_HANDLE on failure.
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* On failure the error buffer will be filled with a message.
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*/
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stock Handle:SQLite_UseDatabase(const String:database[],
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String:error[],
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maxlength)
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{
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new Handle:kv, Handle:db;
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kv = CreateKeyValues("");
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KvSetString(kv, "driver", "sqlite");
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KvSetString(kv, "database", database);
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db = SQL_ConnectCustom(kv, error, maxlength, false);
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CloseHandle(kv);
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return db;
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}
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/**
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* This function is deprecated. Use SQL_ConnectCustom or SQLite_UseDatabase instead.
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*/
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#pragma deprecated Use SQL_ConnectCustom instead.
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native Handle:SQL_ConnectEx(Handle:driver,
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const String:host[],
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const String:user[],
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const String:pass[],
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const String:database[],
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String:error[],
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maxlength,
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bool:persistent=true,
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port=0,
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maxTimeout=0);
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/**
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* Returns if a named configuration is present in databases.cfg.
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*
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* @param name Configuration name.
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* @return True if it exists, false otherwise.
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*/
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native bool:SQL_CheckConfig(const String:name[]);
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/**
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* Returns a driver Handle from a name string.
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*
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* If the driver is not found, SourceMod will attempt
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* to load an extension named dbi.<name>.ext.[dll|so].
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*
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* @param name Driver identification string, or an empty
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* string to return the default driver.
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* @return Driver Handle, or INVALID_HANDLE on failure.
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*/
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native Handle:SQL_GetDriver(const String:name[]="");
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/**
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* Reads the driver of an opened database.
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*
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* @param database Database Handle.
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* @param ident Option buffer to store the identification string.
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* @param ident_length Maximum length of the buffer.
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* @return Driver Handle.
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*/
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native Handle:SQL_ReadDriver(Handle:database, String:ident[]="", ident_length=0);
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/**
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* Retrieves a driver's identification string.
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*
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* Example: "mysql", "sqlite"
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*
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* @param driver Driver Handle, or INVALID_HANDLE for the default driver.
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* @param ident Identification string buffer.
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* @param maxlength Maximum length of the buffer.
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* @noreturn
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* @error Invalid Handle other than INVALID_HANDLE.
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*/
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native SQL_GetDriverIdent(Handle:driver, String:ident[], maxlength);
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/**
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* Retrieves a driver's product string.
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*
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* Example: "MySQL", "SQLite"
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*
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* @param driver Driver Handle, or INVALID_HANDLE for the default driver.
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* @param product Product string buffer.
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* @param maxlength Maximum length of the buffer.
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* @noreturn
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* @error Invalid Handle other than INVALID_HANDLE.
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*/
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native SQL_GetDriverProduct(Handle:driver, String:product[], maxlength);
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/**
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* Returns the number of affected rows from the last query.
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*
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* @param hndl A database OR statement Handle.
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* @return Number of rows affected by the last query.
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* @error Invalid database or statement Handle.
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*/
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native SQL_GetAffectedRows(Handle:hndl);
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/**
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* Returns the last query's insertion id.
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*
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* @param hndl A database, query, OR statement Handle.
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* @return Last query's insertion id.
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* @error Invalid database, query, or statement Handle.
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*/
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native SQL_GetInsertId(Handle:hndl);
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/**
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* Returns the error reported by the last query.
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*
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* @param hndl A database, query, OR statement Handle.
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* @param error Error buffer.
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* @param maxlength Maximum length of the buffer.
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* @return True if there was an error, false otherwise.
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* @error Invalid database, query, or statement Handle.
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*/
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native bool:SQL_GetError(Handle:hndl, String:error[], maxlength);
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/**
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* Escapes a database string for literal insertion. This is not needed
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* for binding strings in prepared statements.
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*
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* Generally, database strings are inserted into queries enclosed in
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* single quotes ('). If user input has a single quote in it, the
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* quote needs to be escaped. This function ensures that any unsafe
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* characters are safely escaped according to the database engine and
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* the database's character set.
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*
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* NOTE: SourceMod only guarantees properly escaped strings when the query
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* encloses the string in ''. While drivers tend to allow " instead, the string
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* may be not be escaped (for example, on SQLite)!
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*
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* @param hndl A database Handle.
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* @param string String to quote.
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* @param buffer Buffer to store quoted string in.
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* @param maxlength Maximum length of the buffer.
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* @param written Optionally returns the number of bytes written.
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* @return True on success, false if buffer is not big enough.
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* The buffer must be at least 2*strlen(string)+1.
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* @error Invalid database or statement Handle.
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*/
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native bool:SQL_EscapeString(Handle:database,
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const String:string[],
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String:buffer[],
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maxlength,
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&written=0);
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/**
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* This is a backwards compatibility stock. You should use SQL_EscapeString()
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* instead, as this function will probably be deprecated in SourceMod 1.1.
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*/
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stock bool:SQL_QuoteString(Handle:database,
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const String:string[],
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String:buffer[],
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maxlength,
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&written=0)
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{
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return SQL_EscapeString(database, string, buffer, maxlength, written);
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}
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/**
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* Executes a query and ignores the result set.
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*
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* @param database A database Handle.
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* @param query Query string.
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* @param len Optional parameter to specify the query length, in
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* bytes. This can be used to send binary queries that
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* have a premature terminator.
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* @return True if query succeeded, false otherwise. Use
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* SQL_GetError to find the last error.
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* @error Invalid database Handle.
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*/
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native bool:SQL_FastQuery(Handle:database, const String:query[], len=-1);
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/**
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* Executes a simple query and returns a new query Handle for
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* receiving the results.
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*
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* @param database A database Handle.
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* @param query Query string.
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* @param len Optional parameter to specify the query length, in
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* bytes. This can be used to send binary queries that
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* have a premature terminator.
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* @return A new Query Handle on success, INVALID_HANDLE
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* otherwise. The Handle must be freed with CloseHandle().
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* @error Invalid database Handle.
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*/
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native Handle:SQL_Query(Handle:database, const String:query[], len=-1);
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/**
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* Creates a new prepared statement query. Prepared statements can
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* be executed any number of times. They can also have placeholder
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* parameters, similar to variables, which can be bound safely and
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* securely (for example, you do not need to quote bound strings).
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*
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* Statement handles will work in any function that accepts a Query handle.
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*
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* @param database A database Handle.
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* @param query Query string.
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* @param error Error buffer.
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* @param maxlength Maximum size of the error buffer.
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* @return A new statement Handle on success, INVALID_HANDLE
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* otherwise. The Handle must be freed with CloseHandle().
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* @error Invalid database Handle.
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*/
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native Handle:SQL_PrepareQuery(Handle:database, const String:query[], String:error[], maxlength);
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/**
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* Advances to the next set of results.
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*
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* In some SQL implementations, multiple result sets can exist on one query.
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* This is possible in MySQL with simple queries when executing a CALL
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* query. If this is the case, all result sets must be processed before
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* another query is made.
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*
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* @param query A query Handle.
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* @return True if there was another result set, false otherwise.
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* @error Invalid query Handle.
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*/
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native bool:SQL_FetchMoreResults(Handle:query);
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/**
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* Returns whether or not a result set exists. This will
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* return true even if 0 results were returned, but false
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* on queries like UPDATE, INSERT, or DELETE.
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*
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* @param query A query (or statement) Handle.
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* @return True if there is a result set, false otherwise.
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* @error Invalid query Handle.
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*/
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native bool:SQL_HasResultSet(Handle:query);
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/**
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* Retrieves the number of rows in the last result set.
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*
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* @param query A query (or statement) Handle.
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* @return Number of rows in the current result set.
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* @error Invalid query Handle.
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*/
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native SQL_GetRowCount(Handle:query);
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/**
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* Retrieves the number of fields in the last result set.
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*
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* @param query A query (or statement) Handle.
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* @return Number of fields in the current result set.
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* @error Invalid query Handle.
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*/
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native SQL_GetFieldCount(Handle:query);
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/**
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* Retrieves the name of a field by index.
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*
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* @param query A query (or statement) Handle.
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* @param field Field number (starting from 0).
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* @param name Name buffer.
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* @param maxlength Maximum length of the name buffer.
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* @noreturn
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* @error Invalid query Handle, invalid field index, or
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* no current result set.
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*/
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native SQL_FieldNumToName(Handle:query, field, String:name[], maxlength);
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/**
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* Retrieves a field index by name.
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*
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* @param query A query (or statement) Handle.
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* @param name Name of the field (case sensitive).
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* @param field Variable to store field index in.
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* @return True if found, false if not found.
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* @error Invalid query Handle or no current result set.
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*/
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native bool:SQL_FieldNameToNum(Handle:query, const String:name[], &field);
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/**
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* Fetches a row from the current result set. This must be
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* successfully called before any results are fetched.
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*
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* If this function fails, SQL_MoreResults() can be used to
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* tell if there was an error or the result set is finished.
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*
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* @param query A query (or statement) Handle.
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* @return True if a row was fetched, false otherwise.
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* @error Invalid query Handle.
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*/
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native bool:SQL_FetchRow(Handle:query);
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/**
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* Returns if there are more rows.
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*
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* @param query A query (or statement) Handle.
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* @return True if there are more rows, false otherwise.
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* @error Invalid query Handle.
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*/
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native bool:SQL_MoreRows(Handle:query);
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/**
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* Rewinds a result set back to the first result.
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*
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* @param query A query (or statement) Handle.
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* @return True on success, false otherwise.
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* @error Invalid query Handle or no current result set.
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*/
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native bool:SQL_Rewind(Handle:query);
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/**
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* Fetches a string from a field in the current row of a result set.
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* If the result is NULL, an empty string will be returned. A NULL
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* check can be done with the result parameter, or SQL_IsFieldNull().
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*
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* @param query A query (or statement) Handle.
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* @param field The field index (starting from 0).
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* @param buffer String buffer.
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* @param maxlength Maximum size of the string buffer.
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* @param result Optional variable to store the status of the return value.
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* @return Number of bytes written.
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* @error Invalid query Handle or field index, invalid
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* type conversion requested from the database,
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* or no current result set.
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*/
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native SQL_FetchString(Handle:query, field, String:buffer[], maxlength, &DBResult:result=DBVal_Error);
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/**
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* Fetches a float from a field in the current row of a result set.
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* If the result is NULL, a value of 0.0 will be returned. A NULL
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* check can be done with the result parameter, or SQL_IsFieldNull().
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*
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* @param query A query (or statement) Handle.
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* @param field The field index (starting from 0).
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* @param result Optional variable to store the status of the return value.
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* @return A float value.
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* @error Invalid query Handle or field index, invalid
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* type conversion requested from the database,
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* or no current result set.
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*/
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native Float:SQL_FetchFloat(Handle:query, field, &DBResult:result=DBVal_Error);
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/**
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* Fetches an integer from a field in the current row of a result set.
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* If the result is NULL, a value of 0 will be returned. A NULL
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* check can be done with the result parameter, or SQL_IsFieldNull().
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*
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* @param query A query (or statement) Handle.
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* @param field The field index (starting from 0).
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* @param result Optional variable to store the status of the return value.
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* @return An integer value.
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* @error Invalid query Handle or field index, invalid
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* type conversion requested from the database,
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* or no current result set.
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*/
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native SQL_FetchInt(Handle:query, field, &DBResult:result=DBVal_Error);
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/**
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* Returns whether a field's data in the current row of a result set is
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* NULL or not. NULL is an SQL type which means "no data."
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*
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* @param query A query (or statement) Handle.
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* @param field The field index (starting from 0).
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* @return True if data is NULL, false otherwise.
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|
* @error Invalid query Handle or field index, or no
|
|
* current result set.
|
|
*/
|
|
native bool:SQL_IsFieldNull(Handle:query, field);
|
|
|
|
/**
|
|
* Returns the length of a field's data in the current row of a result
|
|
* set. This only needs to be called for strings to determine how many
|
|
* bytes to use. Note that the return value does not include the null
|
|
* terminator.
|
|
*
|
|
* @param query A query (or statement) Handle.
|
|
* @param field The field index (starting from 0).
|
|
* @return Number of bytes for the field's data size.
|
|
* @error Invalid query Handle or field index or no
|
|
* current result set.
|
|
*/
|
|
native SQL_FetchSize(Handle:query, field);
|
|
|
|
/**
|
|
* Binds a parameter in a prepared statement to a given integer value.
|
|
*
|
|
* @param statement A statement (prepared query) Handle.
|
|
* @param param The parameter index (starting from 0).
|
|
* @param number The number to bind.
|
|
* @param signed True to bind the number as signed, false to
|
|
* bind it as unsigned.
|
|
* @noreturn
|
|
* @error Invalid statement Handle or parameter index, or
|
|
* SQL error.
|
|
*/
|
|
native SQL_BindParamInt(Handle:statement, param, number, bool:signed=true);
|
|
|
|
/**
|
|
* Binds a parameter in a prepared statement to a given float value.
|
|
*
|
|
* @param statement A statement (prepared query) Handle.
|
|
* @param param The parameter index (starting from 0).
|
|
* @param float The float number to bind.
|
|
* @noreturn
|
|
* @error Invalid statement Handle or parameter index, or
|
|
* SQL error.
|
|
*/
|
|
native SQL_BindParamFloat(Handle:statement, param, Float:value);
|
|
|
|
/**
|
|
* Binds a parameter in a prepared statement to a given string value.
|
|
*
|
|
* @param statement A statement (prepared query) Handle.
|
|
* @param param The parameter index (starting from 0).
|
|
* @param value The string to bind.
|
|
* @param copy Whether or not SourceMod should copy the value
|
|
* locally if necessary. If the string contents
|
|
* won't change before calling SQL_Execute(), this
|
|
* can be set to false for optimization.
|
|
* @noreturn
|
|
* @error Invalid statement Handle or parameter index, or
|
|
* SQL error.
|
|
*/
|
|
native SQL_BindParamString(Handle:statement, param, const String:value[], bool:copy);
|
|
|
|
/**
|
|
* Executes a prepared statement. All parameters must be bound beforehand.
|
|
*
|
|
* @param statement A statement (prepared query) Handle.
|
|
* @return True on success, false on failure.
|
|
* @error Invalid statement Handle.
|
|
*/
|
|
native bool:SQL_Execute(Handle:statement);
|
|
|
|
/**
|
|
* Locks a database so threading operations will not interrupt.
|
|
*
|
|
* If you are using a database Handle for both threading and non-threading,
|
|
* this MUST be called before doing any set of non-threading DB operations.
|
|
* Otherwise you risk corrupting the database driver's memory or network
|
|
* connection.
|
|
*
|
|
* Leaving a lock on a database and then executing a threaded query results
|
|
* in a dead lock! Make sure to call SQL_UnlockDatabase()!
|
|
*
|
|
* If the lock cannot be acquired, the main thread will pause until the
|
|
* threaded operation has concluded.
|
|
*
|
|
* @param database A database Handle.
|
|
* @noreturn
|
|
* @error Invalid database Handle.
|
|
*/
|
|
native SQL_LockDatabase(Handle:database);
|
|
|
|
/**
|
|
* Unlocks a database so threading operations may continue.
|
|
*
|
|
* @param database A database Handle.
|
|
* @noreturn
|
|
* @error Invalid database Handle.
|
|
*/
|
|
native SQL_UnlockDatabase(Handle:database);
|
|
|
|
/**
|
|
* General callback for threaded SQL stuff.
|
|
*
|
|
* @param db Parent object of the Handle (or INVALID_HANDLE if none).
|
|
* @param hndl Handle to the child object (or INVALID_HANDLE if none).
|
|
* @param error Error string if there was an error. The error could be
|
|
* empty even if an error condition exists, so it is important
|
|
* to check the actual Handle value instead.
|
|
* @param data Data passed in via the original threaded invocation.
|
|
* @param
|
|
*/
|
|
functag public SQLTCallback(Handle:owner, Handle:hndl, const String:error[], any:data);
|
|
|
|
/**
|
|
* Tells whether two database handles both point to the same database
|
|
* connection.
|
|
*
|
|
* @param hndl1 First database Handle.
|
|
* @param hndl2 Second database Handle.
|
|
* @return True if the Handles point to the same
|
|
* connection, false otherwise.
|
|
* @error Invalid Handle.
|
|
*/
|
|
native bool:SQL_IsSameConnection(Handle:hndl1, Handle:hndl2);
|
|
|
|
/**
|
|
* Connects to a database via a thread. This can be used instead of
|
|
* SQL_Connect() if you wish for non-blocking functionality.
|
|
*
|
|
* It is not necessary to use this to use threaded queries. However, if you
|
|
* don't (or you mix threaded/non-threaded queries), you should see
|
|
* SQL_LockDatabase().
|
|
*
|
|
* @param callback Callback; new Handle will be in hndl, owner is the driver.
|
|
* If no driver was found, the owner is INVALID_HANDLE.
|
|
* @param name Database name.
|
|
* @noreturn
|
|
*/
|
|
native SQL_TConnect(SQLTCallback:callback, const String:name[]="default", any:data=0);
|
|
|
|
/**
|
|
* Executes a simple query via a thread. The query Handle is passed through
|
|
* the callback.
|
|
*
|
|
* The database Handle returned through the callback is always a new Handle,
|
|
* and if necessary, SQL_IsSameConnection() should be used to test against
|
|
* other conenctions.
|
|
*
|
|
* The query Handle returned through the callback is temporary and destroyed
|
|
* at the end of the callback. If you need to hold onto it, use CloneHandle().
|
|
*
|
|
* @param database A database Handle.
|
|
* @param callback Callback; database is in "owner" and the query Handle
|
|
* is passed in "hndl".
|
|
* @param query Query string.
|
|
* @param data Extra data value to pass to the callback.
|
|
* @param prio Priority queue to use.
|
|
* @noreturn
|
|
* @error Invalid database Handle.
|
|
*/
|
|
native SQL_TQuery(Handle:database, SQLTCallback:callback, const String:query[], any:data=0, DBPriority:prio=DBPrio_Normal);
|