amxmodx/dlls/sqlite/sqlite.cpp
2005-02-15 20:46:58 +00:00

398 lines
8.9 KiB
C++
Executable File

/* AMX Mod X
* MySQL Module
*
* by the AMX Mod X Development Team
*
* This file is part of AMX Mod X.
*
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* In addition, as a special exception, the author gives permission to
* link the code of this program with the Half-Life Game Engine ("HL
* Engine") and Modified Game Libraries ("MODs") developed by Valve,
* L.L.C ("Valve"). You must obey the GNU General Public License in all
* respects for all of the code used other than the HL Engine and MODs
* from Valve. If you modify this file, you may extend this exception
* to your version of the file, but you are not obligated to do so. If
* you do not wish to do so, delete this exception statement from your
* version.
*/
#include <stdarg.h>
#include "sqlite_amx.h"
unsigned int lastDb;
CVector<SQLResult*> Results;
CVector<SQL*> DBList;
// ///////////////////////////////
// Sqlite natives for AMX scripting
// ///////////////////////////////
// Sql:dbi_connect(host[],user[],pass[],dbname[],error[],maxlength) :
// - open connection
// not used: host, user, pass
static cell AMX_NATIVE_CALL sql_connect(AMX *amx, cell *params) // 6 param
{
int i = 0;
int id = -1;
//char *host = MF_GetAmxString(amx,params[1], 0, &i);
//char *user = MF_GetAmxString(amx,params[2], 1, &i);
//char *pass = MF_GetAmxString(amx,params[3], 2, &i);
char *dbname = MF_GetAmxString(amx,params[4], 3, &i);
i = 0;
if (!strlen(dbname)) {
MF_LogError(amx, AMX_ERR_NATIVE, "Recieved invalid parameter.");
return -1;
}
SQL *c=NULL;
for (i=0; (unsigned int)i<DBList.size(); i++) {
if (DBList[i]->isFree) {
id = i;
break;
}
}
if (id>=0) {
c = DBList[id];
} else {
c = new SQL;
DBList.push_back(c);
id = (unsigned int)(DBList.size() - 1);
}
if (!c->Connect(dbname))
{
if (c->ErrorStr.size() < 1)
{
c->Error();
}
MF_SetAmxString(amx, params[5], c->ErrorStr.c_str(), params[6]);
return CONNECT_FAILED;
}
MF_SetAmxString(amx,params[5],"",params[6]);
lastDb = id;
return id+1;
}
// dbi_error(Sql:sql,dest[],maxlength)
// - store maxlength characters from mysql error in current row to dest
static cell AMX_NATIVE_CALL sql_error(AMX *amx, cell *params) // 3 params
{
unsigned int id = params[1]-1;
if (id >= DBList.size() || DBList[id]->isFree)
id = lastDb;
SQL *sql = DBList[id];
if (sql->ErrorStr.size() > 1)
{
MF_SetAmxString(amx, params[2], sql->ErrorStr.c_str(), params[3]);
sql->ErrorStr.assign("");
return 1;
} else {
sql->Error();
if (sql->ErrorStr.size() > 1)
{
MF_SetAmxString(amx, params[2], sql->ErrorStr.c_str(), params[3]);
sql->ErrorStr.assign("");
return 1;
}
}
MF_SetAmxString(amx, params[2], "", params[3]);
return 0;
}
// Result:dbi_query(Sql:sql,query[]) - returns 0 on success, <0 on failure, >0 on result set
static cell AMX_NATIVE_CALL sql_query(AMX *amx, cell *params) // 2 params
{
unsigned int id = params[1] - 1;
if (id >= DBList.size() || DBList[id]->isFree) {
MF_LogError(amx, AMX_ERR_NATIVE, "Invalid database handle %d", id);
return QUERY_FAILED;
}
lastDb = id;
int len = 0;
const char *query = MF_FormatAmxString(amx, params, 2, &len);
SQL *sql = DBList[id];
return sql->Query(query); //Return the result set handle, if any
}
// dbi_nextrow(Sql:sql) :
// - read next row
// - return :
// . number of line
// . 0 at end
static cell AMX_NATIVE_CALL sql_nextrow(AMX *amx, cell *params) // 1 param
{
unsigned int id = params[1]-1;
if (id == -1)
{
//the user should have checked, but we'll return 0 anyway
return 0;
}
if (id >= Results.size() || Results[id]->isFree)
{
MF_LogError(amx, AMX_ERR_NATIVE, "Invalid result handle %d", id);
return 0;
}
SQLResult *Result = Results[id];
return Result->Nextrow();
}
// dbi_close(Sql:sql) :
// - free result
// - close connection
static cell AMX_NATIVE_CALL sql_close(AMX *amx, cell *params) // 1 param
{
cell *addr = MF_GetAmxAddr(amx, params[1]);
unsigned int id = (*addr) - 1;
if (id >= DBList.size() || DBList[id]->isFree) {
MF_LogError(amx, AMX_ERR_NATIVE, "Invalid database handle %d", id);
return 0;
}
lastDb = id;
SQL *sql = DBList[id];
sql->Disconnect();
*addr = 0;
return 1;
}
//Returns a field from a query result handle.
// 2 param - returns integer
// 3 param - stores float in cell byref
// 4 param - stores string
static cell AMX_NATIVE_CALL sql_getfield(AMX *amx, cell *params) // 2-4 params
{
unsigned int id = params[1]-1;
if (id >= Results.size() || Results[id]->isFree)
{
MF_LogError(amx, AMX_ERR_NATIVE, "Invalid result handle %d.", id);
return 0;
}
SQLResult *Result = Results[id];
if (Result->m_rowCount == 0)
{
MF_LogError(amx, AMX_ERR_NATIVE, "Record set is empty.");
return 0;
}
int numParams = (*params)/sizeof(cell);
cell *fAddr = NULL;
const char *field = Result->GetField(params[2]-1);
if (field == NULL)
{
MF_LogError(amx, AMX_ERR_NATIVE, "Field error.");
return 0;
}
switch (numParams)
{
case 2:
return atoi(field);
break;
case 3:
fAddr = MF_GetAmxAddr(amx, params[3]);
*fAddr = amx_ftoc((REAL)atof(field));
return 1;
break;
case 4:
return MF_SetAmxString(amx, params[3], field?field:"", *(MF_GetAmxAddr(amx, params[4])));
break;
default:
break;
}
return 0;
}
//Returns a field from a query result handle.
// 2 param - returns integer
// 3 param - stores float in cell byref
// 4 param - stores string
static cell AMX_NATIVE_CALL sql_getresult(AMX *amx, cell *params) // 4 params
{
unsigned int id = params[1]-1;
if (id >= Results.size())
{
MF_LogError(amx, AMX_ERR_NATIVE, "Invalid result handle %d", id);
return 0;
}
SQLResult *Result = Results[id];
int numParams = (*params)/sizeof(cell);
cell *fAddr = NULL;
int len = 0;
const char *column = MF_GetAmxString(amx, params[2], 0, &len);
const char *field = Result->GetField(column);
if (field == NULL)
{
MF_LogError(amx, AMX_ERR_NATIVE, "Unknown error");
return 0;
}
switch (numParams)
{
case 2:
return atoi(field);
break;
case 3:
fAddr = MF_GetAmxAddr(amx, params[3]);
*fAddr = amx_ftoc((REAL)atof(field));
return 1;
break;
case 4:
len = *(MF_GetAmxAddr(amx, params[4]));
return MF_SetAmxString(amx, params[3], field?field:"", params[4]);
break;
default:
break;
}
return 0;
}
static cell AMX_NATIVE_CALL sql_free_result(AMX *amx, cell *params)
{
cell *addr = (MF_GetAmxAddr(amx, params[1]));
unsigned int id = (*addr) - 1;
if (id == -1)
{
//the user should have checked, but we'll return 0 anyway
return 0;
}
if (id >= Results.size())
{
MF_LogError(amx, AMX_ERR_NATIVE, "Invalid result handle %d", id);
return 0;
}
SQLResult *Result = Results[id];
*addr = 0;
if (Result->isFree) {
MF_LogError(amx, AMX_ERR_NATIVE, "Tried to free result %d, but the result was already free!", id + 1);
return 0;
}
Result->FreeResult();
#if defined _DEBUG
if (id + 1 == SQLResult::latestStoredResultId)
MF_PrintSrvConsole("***FREED: %d\n", id + 1);
else
MF_PrintSrvConsole("***FREED: %d WARNING LAST STORED: %d!\n", id + 1, SQLResult::latestStoredResultId);
#endif
return 1;
}
static cell AMX_NATIVE_CALL sql_num_rows(AMX *amx, cell *params)
{
unsigned int id = params[1]-1;
if (id == -1)
{
//the user should have checked, but we'll return 0 anyway
return 0;
}
if (id >= Results.size() || Results[id]->isFree)
{
MF_LogError(amx, AMX_ERR_NATIVE, "Invalid result handle %d", id);
return 0;
}
SQLResult *Result = Results[id];
return (cell)Result->NumRows();
}
static cell AMX_NATIVE_CALL sql_type(AMX *amx, cell *params)
{
return MF_SetAmxString(amx, params[1], "sqlite", params[2]);
}
AMX_NATIVE_INFO mysql_Natives[] = {
{ "dbi_connect", sql_connect },
{ "dbi_query", sql_query },
{ "dbi_field", sql_getfield },
{ "dbi_nextrow", sql_nextrow },
{ "dbi_close", sql_close },
{ "dbi_error", sql_error },
{ "dbi_type", sql_type },
{ "dbi_free_result", sql_free_result },
{ "dbi_num_rows", sql_num_rows },
{ "dbi_result", sql_getresult },
{ NULL, NULL }
};
void OnAmxxAttach()
{
SQLResult *Dump = new SQLResult;
Dump->isFree = false;
Results.push_back(Dump);
MF_AddNatives(mysql_Natives);
}
void ServerDeactivate()
{
unsigned int i = 0;
for (i=0; i<Results.size(); i++)
{
if (!Results[i]->isFree)
Results[i]->FreeResult();
delete Results[i];
}
for (i=0; i<DBList.size(); i++)
{
DBList[i]->Disconnect();
delete DBList[i];
}
Results.clear();
DBList.clear();
RETURN_META(MRES_IGNORED);
}