amxmodx/dlls/pgsql/pgsql.cpp
2004-06-29 08:09:53 +00:00

355 lines
8.1 KiB
C++
Executable File

/* AMX Mod X
* PGSQL Module
*
* by BAILOPAN
*
* 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 "pgsql_amx.h"
#include "amxxmodule.h"
CVector<SQLResult*> Results;
CVector<SQL*> DBList;
int sql_exists(const char* host,const char* user,const char* pass,const char* dbase) {
unsigned int i = 0;
int id = 0;
for (i=0; i<=DBList.size(); i++) {
id++;
if ((DBList[i]->Host.compare(host) == 0) &&
(DBList[i]->Username.compare(user) == 0) &&
(DBList[i]->Password.compare(pass) == 0) &&
(DBList[i]->Database.compare(dbase) == 0) &&
(!DBList[i]->isFree)) {
return id;
}
}
return -1;
}
// ///////////////////////////////
// pgsql natives for AMX scripting
// ///////////////////////////////
// sql = pgsql_connect(host[],user[],pass[],dbname[],error[],maxlength) :
// - open connection
static cell AMX_NATIVE_CALL sql_connect(AMX *amx, cell *params) // 6 param
{
int i;
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(host) || !strlen(user) || !strlen(dbname)) {
MF_RaiseAmxError(amx, AMX_ERR_NATIVE);
return -1;
}
int id = sql_exists(host,user,pass,dbname);
if (id > 0)
return id;
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(host, user, pass, dbname))
{
MF_SetAmxString(amx, params[5], c->ErrorStr.c_str(), params[6]);
return -1;
}
MF_SetAmxString(amx,params[5],"",params[6]);
return id+1;
}
// pgsql_error(sql,dest[],maxlength)
// - store maxlength characters from pgsql 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)
{
MF_RaiseAmxError(amx, AMX_ERR_NATIVE);
return 0;
}
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 {
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;
}
// pgsql_query(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_Log("Invalid Database Handle %d", id);
MF_RaiseAmxError(amx, AMX_ERR_NATIVE);
return -1;
}
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
}
// pgsql_nextrow(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 >= Results.size() || Results[id]->isFree)
{
MF_Log("Invalid result handle %d", id);
MF_RaiseAmxError(amx, AMX_ERR_NATIVE);
return 0;
}
SQLResult *Result = Results[id];
return Result->Nextrow();
}
// pgsql_close(sql) :
// - free result
// - close connection
static cell AMX_NATIVE_CALL sql_close(AMX *amx, cell *params) // 1 param
{
unsigned int id = params[1]-1;
if (id >= DBList.size() || DBList[id]->isFree) {
MF_Log("Invalid Database Handle %d", id);
MF_RaiseAmxError(amx, AMX_ERR_NATIVE);
return 0;
}
SQL *sql = DBList[id];
sql->Disconnect();
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_Log("Invalid result handle %d", id);
MF_RaiseAmxError(amx, AMX_ERR_NATIVE);
return 0;
}
SQLResult *Result = Results[id];
int numParams = (*params)/sizeof(cell);
cell *fAddr = NULL;
const char *field = Result->GetField(id);
if (field == NULL)
{
MF_RaiseAmxError(amx, AMX_ERR_NATIVE);
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:"", 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() || Results[id]->isFree)
{
MF_Log("Invalid result handle %d", id);
MF_RaiseAmxError(amx, AMX_ERR_NATIVE);
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(id);
if (field == NULL)
{
MF_RaiseAmxError(amx, AMX_ERR_NATIVE);
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:"", params[4]);
break;
default:
break;
}
return 0;
}
static cell AMX_NATIVE_CALL sql_free_result(AMX *amx, cell *params)
{
unsigned int id = params[1]-1;
if (id >= Results.size() || Results[id]->isFree)
{
MF_Log("Invalid result handle %d", id);
MF_RaiseAmxError(amx, AMX_ERR_NATIVE);
return 0;
}
SQLResult *Result = Results[id];
Result->FreeResult();
return 1;
}
static cell AMX_NATIVE_CALL sql_num_rows(AMX *amx, cell *params)
{
unsigned int id = params[1]-1;
if (id >= Results.size() || Results[id]->isFree)
{
MF_Log("Invalid result handle %d", id);
MF_RaiseAmxError(amx, AMX_ERR_NATIVE);
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], "pgsql", params[2]);
}
AMX_NATIVE_INFO pgsql_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()
{
MF_AddNatives(pgsql_Natives);
}
void OnAmxxDetach()
{
Results.clear();
DBList.clear();
}