zoneminder/web/includes/database.php

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<?php
//
// ZoneMinder web database interface file, $Date$, $Revision$
// Copyright (C) 2001-2008 Philip Coombes
//
// 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
define( 'DB_LOG_OFF', 0 );
define( 'DB_LOG_ONLY', 1 );
define( 'DB_LOG_DEBUG', 2 );
$GLOBALS['dbLogLevel'] = DB_LOG_OFF;
$GLOBALS['dbConn'] = false;
function dbConnect() {
global $dbConn;
if (strpos(ZM_DB_HOST, ':')) {
// Host variable may carry a port or socket.
list($host, $portOrSocket) = explode(':', ZM_DB_HOST, 2);
if (ctype_digit($portOrSocket)) {
$socket = ':host='.$host . ';port='.$portOrSocket;
} else {
$socket = ':unix_socket='.$portOrSocket;
}
} else {
$socket = ':host='.ZM_DB_HOST;
}
try {
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$dbOptions = null;
if ( defined( 'ZM_DB_SSL_CA_CERT' ) and ZM_DB_SSL_CA_CERT ) {
$dbOptions = array(
PDO::MYSQL_ATTR_SSL_CA => ZM_DB_SSL_CA_CERT,
PDO::MYSQL_ATTR_SSL_KEY => ZM_DB_SSL_CLIENT_KEY,
PDO::MYSQL_ATTR_SSL_CERT => ZM_DB_SSL_CLIENT_CERT,
);
$dbConn = new PDO( ZM_DB_TYPE . $socket . ';dbname='.ZM_DB_NAME, ZM_DB_USER, ZM_DB_PASS, $dbOptions );
} else {
$dbConn = new PDO( ZM_DB_TYPE . $socket . ';dbname='.ZM_DB_NAME, ZM_DB_USER, ZM_DB_PASS );
}
$dbConn->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
$dbConn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
} catch(PDOException $ex ) {
echo 'Unable to connect to ZM db.' . $ex->getMessage();
error_log('Unable to connect to ZM DB ' . $ex->getMessage() );
$dbConn = null;
}
}
dbConnect();
function dbDisconnect() {
global $dbConn;
$dbConn = null;
}
function dbLogOff() {
global $dbLogLevel;
$dbLogLevel = DB_LOG_OFF;
}
function dbLogOn() {
global $dbLogLevel;
$dbLogLevel = DB_LOG_ONLY;
}
function dbLogDebug() {
global $dbLogLevel;
$dbLogLevel = DB_LOG_DEBUG;
}
function dbDebug() {
dbLogDebug();
}
function dbLog( $sql, $update=false ) {
global $dbLogLevel;
$noExecute = $update && ($dbLogLevel >= DB_LOG_DEBUG);
if ( $dbLogLevel > DB_LOG_OFF )
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Logger::Debug( "SQL-LOG: $sql".($noExecute?" (not executed)":"") );
return( $noExecute );
}
function dbError( $sql ) {
Fatal( "SQL-ERR '".$dbConn->errorInfo()."', statement was '".$sql."'" );
}
function dbEscape( $string ) {
global $dbConn;
if ( version_compare( phpversion(), '4.3.0', '<') )
if ( get_magic_quotes_gpc() )
return( $dbConn->quote( stripslashes( $string ) ) );
else
return( $dbConn->quote( $string ) );
else
if ( get_magic_quotes_gpc() )
return( $dbConn->quote( stripslashes( $string ) ) );
else
return( $dbConn->quote( $string ) );
}
function dbQuery( $sql, $params=NULL ) {
global $dbConn;
if ( dbLog( $sql, true ) )
return;
$result = NULL;
try {
if ( isset($params) ) {
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if ( ! $result = $dbConn->prepare( $sql ) ) {
Error("SQL: Error preparing $sql: " . $pdo->errorInfo);
return NULL;
}
if ( ! $result->execute( $params ) ) {
Error("SQL: Error executing $sql: " . implode(',', $result->errorInfo() ) );
return NULL;
}
} else {
$result = $dbConn->query( $sql );
}
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if ( defined('ZM_DB_DEBUG') ) {
if ( $params )
Warning("SQL: $sql" . implode(',',$params) . ' rows: '.$result->rowCount() );
else
Warning("SQL: $sql: rows:" . $result->rowCount() );
}
} catch(PDOException $e) {
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Error( "SQL-ERR '".$e->getMessage()."', statement was '".$sql."' params:" . ($params?implode(',',$params):'') );
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return NULL;
}
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return $result;
}
function dbFetchOne( $sql, $col=false, $params=NULL ) {
$result = dbQuery( $sql, $params );
if ( ! $result ) {
Fatal( "SQL-ERR dbFetchOne no result, statement was '".$sql."'" . ( $params ? 'params: ' . join(',',$params) : '' ) );
return false;
}
if ( $result && $dbRow = $result->fetch( PDO::FETCH_ASSOC ) ) {
if ( $col ) {
if ( ! isset( $dbRow[$col] ) ) {
Warning( "$col does not exist in the returned row" );
}
return $dbRow[$col];
}
return $dbRow;
}
return( false );
}
function dbFetchAll( $sql, $col=false, $params=NULL ) {
$result = dbQuery( $sql, $params );
if ( ! $result ) {
Fatal( "SQL-ERR dbFetchAll no result, statement was '".$sql."'" . ( $params ? 'params: ' .join(',', $params) : '' ) );
return false;
}
$dbRows = array();
while( $dbRow = $result->fetch( PDO::FETCH_ASSOC ) )
$dbRows[] = $col?$dbRow[$col]:$dbRow;
return( $dbRows );
}
function dbFetchAssoc( $sql, $indexCol, $dataCol=false ) {
$result = dbQuery( $sql );
$dbRows = array();
while( $dbRow = $result->fetch( PDO::FETCH_ASSOC ) )
$dbRows[$dbRow[$indexCol]] = $dataCol?$dbRow[$dataCol]:$dbRow;
return( $dbRows );
}
function dbFetch( $sql, $col=false ) {
return( dbFetchAll( $sql, $col ) );
}
function dbFetchNext( $result, $col=false ) {
if ( $dbRow = $result->fetch( PDO::FETCH_ASSOC ) )
return( $col?$dbRow[$col]:$dbRow );
return( false );
}
function dbNumRows( $sql ) {
$result = dbQuery( $sql );
return( $result->rowCount() );
}
function dbInsertId() {
global $dbConn;
return( $dbConn->lastInsertId() );
}
function getEnumValues( $table, $column ) {
$row = dbFetchOne( "describe $table $column" );
preg_match_all( "/'([^']+)'/", $row['Type'], $matches );
return( $matches[1] );
}
function getSetValues( $table, $column ) {
return( getEnumValues( $table, $column ) );
}
function getUniqueValues( $table, $column, $asString=1 ) {
$values = array();
$sql = "select distinct $column from $table where (not isnull($column) and $column != '') order by $column";
foreach( dbFetchAll( $sql ) as $row ) {
if ( $asString )
$values[$row[$column]] = $row[$column];
else
$values[] = $row[$column];
}
return( $values );
}
function getTableColumns( $table, $asString=1 ) {
$columns = array();
$sql = "describe $table";
foreach( dbFetchAll( $sql ) as $row ) {
if ( $asString )
$columns[$row['Field']] = $row['Type'];
else
$columns[] = $row['Type'];
}
return( $columns );
}
function getTableAutoInc( $table ) {
$row = dbFetchOne( 'show table status where Name=?', NULL, array($table) );
return( $row['Auto_increment'] );
}
function getTableDescription( $table, $asString=1 ) {
$columns = array();
foreach( dbFetchAll( "describe $table" ) as $row ) {
$desc = array(
'name' => $row['Field'],
'required' => ($row['Null']=='NO')?true:false,
'default' => $row['Default'],
'db' => $row,
);
if ( preg_match( "/^varchar\((\d+)\)$/", $row['Type'], $matches ) ) {
$desc['type'] = 'text';
$desc['typeAttrib'] = 'varchar';
$desc['maxLength'] = $matches[1];
} elseif ( preg_match( "/^(\w+)?text$/", $row['Type'], $matches ) ) {
$desc['type'] = 'text';
if (!empty($matches[1]) )
$desc['typeAttrib'] = $matches[1];
switch ( $matches[1] ) {
case 'tiny' :
$desc['maxLength'] = 255;
break;
case 'medium' :
$desc['maxLength'] = 32768;
break;
case '' :
case 'big' :
//$desc['minLength'] = -128;
break;
default :
Error( "Unexpected text qualifier '".$matches[1]."' found for field '".$row['Field']."' in table '".$table."'" );
break;
}
} elseif ( preg_match( "/^(enum|set)\((.*)\)$/", $row['Type'], $matches ) ) {
$desc['type'] = 'text';
$desc['typeAttrib'] = $matches[1];
preg_match_all( "/'([^']+)'/", $matches[2], $matches );
$desc['values'] = $matches[1];
} elseif ( preg_match( "/^(\w+)?int\(\d+\)(?:\s+(unsigned))?$/", $row['Type'], $matches ) ) {
$desc['type'] = 'integer';
switch ( $matches[1] ) {
case 'tiny' :
$desc['minValue'] = -128;
$desc['maxValue'] = 127;
break;
case 'small' :
$desc['minValue'] = -32768;
$desc['maxValue'] = 32767;
break;
case 'medium' :
$desc['minValue'] = -8388608;
$desc['maxValue'] = 8388607;
break;
case '' :
$desc['minValue'] = -2147483648;
$desc['maxValue'] = 2147483647;
break;
case 'big' :
//$desc['minValue'] = -128;
//$desc['maxValue'] = 127;
break;
default :
Error( "Unexpected integer qualifier '".$matches[1]."' found for field '".$row['Field']."' in table '".$table."'" );
break;
}
if ( !empty($matches[1]) )
$desc['typeAttrib'] = $matches[1];
if ( $desc['unsigned'] = ( isset($matches[2]) && $matches[2] == 'unsigned' ) ) {
$desc['maxValue'] += (-$desc['minValue']);
$desc['minValue'] = 0;
}
} elseif ( preg_match( "/^(?:decimal|numeric)\((\d+)(?:,(\d+))?\)(?:\s+(unsigned))?$/", $row['Type'], $matches ) ) {
$desc['type'] = 'fixed';
$desc['range'] = $matches[1];
if ( isset($matches[2]) )
$desc['precision'] = $matches[2];
else
$desc['precision'] = 0;
$desc['unsigned'] = ( isset($matches[3]) && $matches[3] == 'unsigned' );
} elseif ( preg_match( "/^(datetime|timestamp|date|time)$/", $row['Type'], $matches ) ) {
$desc['type'] = 'datetime';
switch ( $desc['typeAttrib'] = $matches[1] ) {
case 'datetime' :
case 'timestamp' :
$desc['hasDate'] = true;
$desc['hasTime'] = true;
break;
case 'date' :
$desc['hasDate'] = true;
$desc['hasTime'] = false;
break;
case 'time' :
$desc['hasDate'] = false;
$desc['hasTime'] = true;
break;
}
} else {
Error( "Can't parse database type '".$row['Type']."' found for field '".$row['Field']."' in table '".$table."'" );
}
if ( $asString )
$columns[$row['Field']] = $desc;
else
$columns[] = $desc;
}
return( $columns );
}
function dbFetchMonitor( $mid ) {
return( dbFetchOne( 'select * from Monitors where Id = ?', NULL, array($mid) ) );
}
function dbFetchGroup( $gid ) {
return( dbFetchOne( 'select * from Groups where Id = ?', NULL, array($gid) ) );
}
?>