114 lines
3.5 KiB
C++
114 lines
3.5 KiB
C++
//
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// ZoneMinder MySQL Implementation, $Date$, $Revision$
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// Copyright (C) 2001-2008 Philip Coombes
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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//
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#include <stdlib.h>
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#include <string.h>
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#include "zm.h"
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#include "zm_db.h"
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MYSQL dbconn;
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int zmDbConnected = false;
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void zmDbConnect()
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{
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if ( !mysql_init( &dbconn ) )
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{
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Error( "Can't initialise database connection: %s", mysql_error( &dbconn ) );
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exit( mysql_errno( &dbconn ) );
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}
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my_bool reconnect = 1;
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if ( mysql_options( &dbconn, MYSQL_OPT_RECONNECT, &reconnect ) )
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Fatal( "Can't set database auto reconnect option: %s", mysql_error( &dbconn ) );
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std::string::size_type colonIndex = staticConfig.DB_HOST.find( ":/" );
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if ( colonIndex != std::string::npos )
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{
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std::string dbHost = staticConfig.DB_HOST.substr( 0, colonIndex );
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std::string dbPort = staticConfig.DB_HOST.substr( colonIndex+1 );
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if ( !mysql_real_connect( &dbconn, dbHost.c_str(), staticConfig.DB_USER.c_str(), staticConfig.DB_PASS.c_str(), 0, atoi(dbPort.c_str()), 0, 0 ) )
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{
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Error( "Can't connect to server: %s", mysql_error( &dbconn ) );
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exit( mysql_errno( &dbconn ) );
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}
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}
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else
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{
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if ( !mysql_real_connect( &dbconn, staticConfig.DB_HOST.c_str(), staticConfig.DB_USER.c_str(), staticConfig.DB_PASS.c_str(), 0, 0, 0, 0 ) )
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{
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Error( "Can't connect to server: %s", mysql_error( &dbconn ) );
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exit( mysql_errno( &dbconn ) );
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}
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}
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if ( mysql_select_db( &dbconn, staticConfig.DB_NAME.c_str() ) )
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{
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Error( "Can't select database: %s", mysql_error( &dbconn ) );
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exit( mysql_errno( &dbconn ) );
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}
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zmDbConnected = true;
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}
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void zmDbClose()
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{
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if ( zmDbConnected )
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{
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mysql_close( &dbconn );
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// mysql_init() call implicitly mysql_library_init() but
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// mysql_close() does not call mysql_library_end()
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mysql_library_end();
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zmDbConnected = false;
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}
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}
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MYSQL_RES * zmDbFetch( const char * query ) {
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if ( ! zmDbConnected ) {
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Error( "Not connected." );
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return NULL;
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}
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if ( mysql_query( &dbconn, query ) ) {
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Error( "Can't run query: %s", mysql_error( &dbconn ) );
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return NULL;
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}
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Debug( 4, "Success running query: %s", query );
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MYSQL_RES *result = mysql_store_result( &dbconn );
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if ( !result ) {
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Error( "Can't use query result: %s for query %s", mysql_error( &dbconn ), query );
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return NULL;
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}
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return result;
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} // end MYSQL_RES * zmDbFetch( const char * query );
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MYSQL_ROW zmDbFetchOne( const char *query ) {
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MYSQL_RES *result = zmDbFetch( query );
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int n_rows = mysql_num_rows( result );
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if ( n_rows != 1 ) {
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Error( "Bogus number of lines return from query, %d returned for query %s.", n_rows, query );
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return NULL;
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}
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MYSQL_ROW dbrow = mysql_fetch_row( result );
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mysql_free_result( result );
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if ( ! dbrow ) {
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Error("Error getting row from query %s. Error is %s", query, mysql_error( &dbconn ) );
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return NULL;
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}
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return dbrow;
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}
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