zoneminder/web/zm_funcs.php

883 lines
20 KiB
PHP

<?php
//
// ZoneMinder web function library, $Date$, $Revision$
// Copyright (C) 2003 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
function userLogin( $username, $password )
{
global $user, $cookies;
if ( version_compare( phpversion(), "4.1.0", "<") )
{
global $_SESSION, $_SERVER;
}
$sql = "select * from Users where Username = '".mysql_escape_string($username)."' and Password = password('".mysql_escape_string($password)."') and Enabled = 1";
$result = mysql_query( $sql );
if ( !$result )
echo mysql_error();
$_SESSION['username'] = $username;
if ( ZM_AUTH_METHOD == "plain" )
{
// Need to save this in session
$_SESSION['password'] = $password;
}
$_SESSION['remote_addr'] = $_SERVER['REMOTE_ADDR']; // To help prevent session hijacking
if ( $db_user = mysql_fetch_assoc( $result ) )
{
$_SESSION['user'] = $user = $db_user;
$_SESSION['password_hash'] = $user['Password'];
}
else
{
unset( $user );
}
if ( $cookies ) session_write_close();
}
function userLogout()
{
global $user;
if ( version_compare( phpversion(), "4.1.0", "<") )
{
global $_SESSION;
}
unset( $_SESSION['user'] );
unset( $user );
session_destroy();
}
function authHash( $use_remote_addr=true )
{
if ( version_compare( phpversion(), "4.1.0", "<") )
{
global $_SESSION;
}
if ( ZM_OPT_USE_AUTH && ZM_AUTH_METHOD == "hashed" )
{
$time = localtime();
if ( $use_remote_addr )
{
$auth_key = ZM_AUTH_SECRET.$_SESSION['username'].$_SESSION['password_hash'].$_SESSION['remote_addr'].$time[2].$time[3].$time[4].$time[5];
}
else
{
$auth_key = ZM_AUTH_SECRET.$_SESSION['username'].$_SESSION['password_hash'].$time[2].$time[3].$time[4].$time[5];
}
$auth = md5( $auth_key );
}
else
{
$auth = "";
}
return( $auth );
}
function getStreamSrc( $args )
{
if ( version_compare( phpversion(), "4.1.0", "<") )
{
global $_SESSION;
}
$stream_src = ZM_PATH_ZMS;
if ( ZM_OPT_USE_AUTH )
{
if ( ZM_AUTH_METHOD == "hashed" )
{
$args[] = "auth=".authHash();
}
else
{
$args[] = "user=".$_SESSION['username'];
$args[] = "pass=".$_SESSION['password'];
}
}
if ( ZM_RAND_STREAM )
{
$args[] = "rand=".time();
}
if ( count($args) )
{
$stream_src .= "?".join( "&", $args );
}
return( $stream_src );
}
function getZmuCommand( $args )
{
if ( version_compare( phpversion(), "4.1.0", "<") )
{
global $_SESSION;
}
$zmu_command = ZMU_PATH;
if ( ZM_OPT_USE_AUTH )
{
if ( ZM_AUTH_METHOD == "hashed" )
{
$zmu_command .= " -A ".authHash( false );
}
else
{
$zmu_command .= " -U ".$_SESSION['username']." -P ".$_SESSION['password'];
}
}
$zmu_command .= $args;
return( $zmu_command );
}
function visibleMonitor( $mid )
{
global $user;
return( empty($user['MonitorIds']) || in_array( $mid, split( ',', $user['MonitorIds'] ) ) );
}
function canView( $area, $mid=false )
{
global $user;
return( ($user[$area] == 'View' || $user[$area] == 'Edit') && ( !$mid || visibleMonitor( $mid ) ) );
}
function canEdit( $area, $mid=false )
{
global $user;
return( $user[$area] == 'Edit' && ( !$mid || visibleMonitor( $mid ) ) );
}
function deleteEvent( $eid )
{
global $user;
if ( $user['Events'] == 'Edit' && $eid )
{
$result = mysql_query( "delete from Events where Id = '$eid'" );
if ( !$result )
die( mysql_error() );
if ( !ZM_OPT_FAST_DELETE )
{
$result = mysql_query( "delete from Stats where EventId = '$eid'" );
if ( !$result )
die( mysql_error() );
$result = mysql_query( "delete from Frames where EventId = '$eid'" );
if ( !$result )
die( mysql_error() );
system( escapeshellcmd( "rm -rf ".ZM_PATH_EVENTS."/*/".sprintf( "%d", $eid ) ) );
}
}
}
function makeLink( $url, $label, $condition=1, $options="" )
{
$string = "";
if ( $condition )
{
$string .= '<a href="'.$url.'"'.($options?(' '.$options):'').'>';
}
$string .= $label;
if ( $condition )
{
$string .= '</a>';
}
return( $string );
}
function truncText( $text, $length, $deslash=1 )
{
return( preg_replace( "/^(.{".$length.",}?)\b.*$/", "\\1&hellip;", ($deslash?stripslashes($text):$text) ) );
}
function buildSelect( $name, $contents, $onchange="" )
{
if ( preg_match( "/^(\w+)\s*\[\s*['\"]?(\w+)[\"']?\s*]$/", $name, $matches ) )
{
$arr = $matches[1];
$idx = $matches[2];
global $$arr;
$value = ${$arr}[$idx];
}
else
{
global $$name;
$value = $$name;
}
ob_start();
?>
<select name="<?= $name ?>" class="form"<?php if ( $onchange ) { echo " onChange=\"$onchange\""; } ?>>
<?php
foreach ( $contents as $content_value => $content_text )
{
?>
<option value="<?= $content_value ?>"<?php if ( $value == $content_value ) { echo " selected"; } ?>><?= $content_text ?></option>
<?php
}
?>
</select>
<?php
$html = ob_get_contents();
ob_end_clean();
return( $html );
}
function getFormChanges( $values, $new_values, $types=false )
{
$changes = array();
if ( !$types )
$types = array();
foreach( $new_values as $key=>$value )
{
switch( $types[$key] )
{
case 'set' :
{
if ( is_array( $new_values[$key] ) )
{
if ( join(',',$new_values[$key]) != $values[$key] )
{
$changes[] = "$key = '".join(',',$new_values[$key])."'";
}
}
elseif ( $values[$key] )
{
$changes[] = "$key = ''";
}
break;
}
default :
{
if ( $values[$key] != $value )
{
$changes[] = "$key = '$value'";
}
break;
}
}
}
return( $changes );
}
function getBrowser( &$browser, &$version )
{
if ( version_compare( phpversion(), "4.1.0", "<") )
{
global $_SERVER;
}
if (ereg( 'MSIE ([0-9].[0-9]{1,2})',$_SERVER['HTTP_USER_AGENT'],$log_version))
{
$version = $log_version[1];
$browser = 'ie';
}
elseif (ereg( 'Safari/([0-9.]+)',$_SERVER['HTTP_USER_AGENT'],$log_version))
{
$version = $log_version[1];
$browser = 'safari';
}
elseif (ereg( 'Opera ([0-9].[0-9]{1,2})',$_SERVER['HTTP_USER_AGENT'],$log_version))
{
$version = $log_version[1];
$browser = 'opera';
}
elseif (ereg( 'Mozilla/([0-9].[0-9]{1,2})',$_SERVER['HTTP_USER_AGENT'],$log_version))
{
$version = $log_version[1];
$browser = 'mozilla';
}
else
{
$version = 0;
$browser = 'unknown';
}
}
function isNetscape()
{
getBrowser( $browser, $version );
return( $browser == "mozilla" );
}
function isInternetExplorer()
{
getBrowser( $browser, $version );
return( $browser == "ie" );
}
function isWindows()
{
if ( version_compare( phpversion(), "4.1.0", "<") )
{
global $_SERVER;
}
return ( preg_match( '/Win/', $_SERVER['HTTP_USER_AGENT'] ) );
}
function canStreamNative()
{
return( ZM_CAN_STREAM == "yes" || ( ZM_CAN_STREAM == "auto" && isNetscape() ) );
}
function canStreamApplet()
{
return( (ZM_OPT_CAMBOZOLA && file_exists( ZM_PATH_WEB.'/'.ZM_PATH_CAMBOZOLA )) );
}
function canStream()
{
return( canStreamNative() | canStreamApplet() );
}
function fixDevices()
{
$string = ZM_PATH_BIN."/zmfix";
$string .= " 2>/dev/null >&- <&- >/dev/null";
exec( $string );
}
function packageControl( $command )
{
$string = ZM_PATH_BIN."/zmpkg.pl $command";
$string .= " 2>/dev/null >&- <&- >/dev/null";
exec( $string );
}
function daemonControl( $command, $daemon=false, $args=false )
{
$string = ZM_PATH_BIN."/zmdc.pl $command";
if ( $daemon )
{
$string .= " $daemon";
if ( $args )
{
$string .= " $args";
}
}
$string .= " 2>/dev/null >&- <&- >/dev/null";
exec( $string );
}
function zmcControl( $monitor, $restart=false )
{
if ( $monitor['Type'] == "Local" )
{
$sql = "select count(if(Function!='None',1,NULL)) as ActiveCount from Monitors where Device = '".$monitor['Device']."'";
$zmc_args = "-d ".$monitor['Device'];
}
else
{
$sql = "select count(if(Function!='None',1,NULL)) as ActiveCount from Monitors where Id = '".$monitor['Id']."'";
$zmc_args = "-m ".$monitor['Id'];
}
$result = mysql_query( $sql );
if ( !$result )
echo mysql_error();
$row = mysql_fetch_assoc( $result );
$active_count = $row['ActiveCount'];
if ( !$active_count )
{
daemonControl( "stop", "zmc", $zmc_args );
}
else
{
if ( $restart )
{
daemonControl( "stop", "zmc", $zmc_args );
}
daemonControl( "start", "zmc", $zmc_args );
}
}
function zmaControl( $monitor, $restart=false )
{
if ( !is_array( $monitor ) )
{
$sql = "select Id,Function,RunMode from Monitors where Id = '$monitor'";
$result = mysql_query( $sql );
if ( !$result )
echo mysql_error();
$monitor = mysql_fetch_assoc( $result );
}
if ( $monitor['RunMode'] == 'Triggered' )
{
// Don't touch anything that's triggered
return;
}
switch ( $monitor['Function'] )
{
case 'Modect' :
case 'Record' :
case 'Mocord' :
case 'Nodect' :
{
if ( $restart )
{
daemonControl( "stop", "zma", "-m ".$monitor['Id'] );
if ( ZM_OPT_FRAME_SERVER )
{
daemonControl( "stop", "zmf", "-m ".$monitor['Id'] );
}
}
if ( ZM_OPT_FRAME_SERVER )
{
daemonControl( "start", "zmf", "-m ".$monitor['Id'] );
}
daemonControl( "start", "zma", "-m ".$monitor['Id'] );
break;
}
default :
{
daemonControl( "stop", "zma", "-m ".$monitor['Id'] );
if ( ZM_OPT_FRAME_SERVER )
{
daemonControl( "stop", "zmf", "-m ".$monitor['Id'] );
}
break;
}
}
}
function daemonCheck( $daemon=false, $args=false )
{
$string = ZM_PATH_BIN."/zmdc.pl check";
if ( $daemon )
{
$string .= " $daemon";
if ( $args )
$string .= " $args";
}
$result = exec( $string );
return( preg_match( '/running/', $result ) );
}
function zmcCheck( $monitor )
{
if ( $monitor['Type'] == 'Local' )
{
$zmc_args = "-d ".$monitor['Device'];
}
else
{
$zmc_args = "-m ".$monitor['Id'];
}
return( daemonCheck( "zmc", $zmc_args ) );
}
function zmaCheck( $monitor )
{
if ( is_array( $monitor ) )
{
$monitor = $monitor['Id'];
}
return( daemonCheck( "zma", "-m $monitor" ) );
}
function createListThumbnail( $event, $overwrite=false )
{
$sql = "select * from Frames where EventId = '".$event['Id']."' and Score = '".$event['MaxScore']."' order by FrameId limit 0,1";
if ( !($result = mysql_query( $sql )) )
die( mysql_error() );
$frame = mysql_fetch_assoc( $result );
$frame_id = $frame['FrameId'];
if ( ZM_WEB_LIST_THUMB_WIDTH )
{
$thumb_width = ZM_WEB_LIST_THUMB_WIDTH;
$fraction = ZM_WEB_LIST_THUMB_WIDTH/$event['Width'];
$thumb_height = $event['Height']*$fraction;
}
elseif ( ZM_WEB_LIST_THUMB_HEIGHT )
{
$thumb_height = ZM_WEB_LIST_THUMB_HEIGHT;
$fraction = ZM_WEB_LIST_THUMB_HEIGHT/$event['Height'];
$thumb_width = $event['Width']*$fraction;
}
else
{
die( "No thumbnail width or height specified, please check in Options->Web" );
}
$event_path = ZM_DIR_EVENTS.'/'.$event['MonitorId'].'/'.$event['Id'];
$image_path = sprintf( "%s/%0".ZM_EVENT_IMAGE_DIGITS."d-capture.jpg", $event_path, $frame_id );
$capt_image = $image_path;
if ( $scale == 1 || !file_exists( ZM_PATH_NETPBM."/jpegtopnm" ) )
{
$anal_image = preg_replace( "/capture/", "analyse", $image_path );
if ( file_exists($anal_image) && filesize( $anal_image ) )
{
$thumb_image = $anal_image;
}
else
{
$thumb_image = $capt_image;
}
}
else
{
$thumb_image = preg_replace( "/capture/", "mini", $capt_image );
if ( !file_exists($thumb_image) || !filesize( $thumb_image ) )
{
$anal_image = preg_replace( "/capture/", "analyse", $capt_image );
if ( file_exists( $anal_image ) )
$command = ZM_PATH_NETPBM."/jpegtopnm -dct fast $anal_image | ".ZM_PATH_NETPBM."/pnmscalefixed $fraction | ".ZM_PATH_NETPBM."/ppmtojpeg --dct=fast > $thumb_image";
else
$command = ZM_PATH_NETPBM."/jpegtopnm -dct fast $capt_image | ".ZM_PATH_NETPBM."/pnmscalefixed $fraction | ".ZM_PATH_NETPBM."/ppmtojpeg --dct=fast > $thumb_image";
#exec( escapeshellcmd( $command ) );
exec( $command );
}
}
$thumb_data = $frame;
$thumb_data['Path'] = $thumb_image;
$thumb_data['Width'] = $thumb_width;
$thumb_data['Height'] = $thumb_height;
return( $thumb_data );
}
function createVideo( $event, $rate, $scale, $overwrite=false )
{
$command = ZM_PATH_BIN."/zmvideo.pl -e ".$event['Id']." -r ".sprintf( "%.2f", ($rate/RATE_SCALE) )." -s ".sprintf( "%.2f", ($scale/SCALE_SCALE) );
if ( $overwrite )
$command .= " -o";
$result = exec( $command, $output, $status );
return( $status?"":rtrim($result) );
}
// Now deprecated
function createImage( $monitor, $scale )
{
if ( is_array( $monitor ) )
{
$monitor = $monitor['Id'];
}
chdir( ZM_DIR_IMAGES );
$command = getZmuCommand( " -m $monitor -i" );
if ( !empty($scale) && $scale < 100 )
$command .= " -S $scale";
$status = exec( escapeshellcmd( $command ) );
chdir( '..' );
return( $status );
}
function reScale( $dimension, $scale=SCALE_SCALE )
{
if ( $scale == SCALE_SCALE )
return( $dimension );
return( (int)(($dimension*$scale)/SCALE_SCALE) );
}
function parseSort( $save_to_session=false )
{
global $sort_field, $sort_asc; // Inputs
global $sort_query, $sort_column, $sort_order; // Outputs
if ( version_compare( phpversion(), "4.1.0", "<") )
{
global $_SESSION;
}
if ( !isset($sort_field) )
{
$sort_field = "StartTime";
$sort_asc = false;
}
switch( $sort_field )
{
case 'Id' :
$sort_column = "E.Id";
break;
case 'MonitorName' :
$sort_column = "M.Name";
break;
case 'Name' :
$sort_column = "E.Name";
break;
case 'Cause' :
$sort_column = "E.Cause";
break;
case 'DateTime' :
case 'StartTime' :
$sort_column = "E.StartTime";
break;
case 'Length' :
$sort_column = "E.Length";
break;
case 'Frames' :
$sort_column = "E.Frames";
break;
case 'AlarmFrames' :
$sort_column = "E.AlarmFrames";
break;
case 'TotScore' :
$sort_column = "E.TotScore";
break;
case 'AvgScore' :
$sort_column = "E.AvgScore";
break;
case 'MaxScore' :
$sort_column = "E.MaxScore";
break;
default:
$sort_column = "E.StartTime";
break;
}
$sort_order = $sort_asc?"asc":"desc";
if ( !$sort_asc ) $sort_asc = 0;
$sort_query = "&sort_field=$sort_field&sort_asc=$sort_asc";
if ( $save_to_session )
{
$_SESSION['sort_field'] = $sort_field;
$_SESSION['sort_asc'] = $sort_asc;
}
}
function parseFilter( $save_to_session=false )
{
global $trms; // Inputs
global $filter_query, $filter_sql, $filter_fields; // Outputs
if ( version_compare( phpversion(), "4.1.0", "<") )
{
global $_SESSION;
}
$filter_query = '';
$filter_sql = '';
$filter_fields = '';
if ( $trms )
{
if ( $save_to_session )
{
$_SESSION['trms'] = $trms;
}
$filter_query .= "&trms=$trms";
$filter_fields .= '<input type="hidden" name="trms" value="'.$trms.'"/>'."\n";
for ( $i = 1; $i <= $trms; $i++ )
{
$conjunction_name = "cnj$i";
$obracket_name = "obr$i";
$cbracket_name = "cbr$i";
$attr_name = "attr$i";
$op_name = "op$i";
$value_name = "val$i";
global $$conjunction_name, $$obracket_name, $$cbracket_name, $$attr_name, $$op_name, $$value_name;
if ( isset($$conjunction_name) )
{
$filter_query .= "&$conjunction_name=".$$conjunction_name;
$filter_sql .= " ".$$conjunction_name." ";
$filter_fields .= '<input type="hidden" name="'.$conjunction_name.'" value="'.$$conjunction_name.'"/>'."\n";
if ( $save_to_session )
{
$_SESSION[$conjunction_name] = $$conjunction_name;
}
}
if ( isset($$obracket_name) )
{
$filter_query .= "&$obracket_name=".$$obracket_name;
$filter_sql .= str_repeat( "(", $$obracket_name );
$filter_fields .= '<input type="hidden" name="'.$obracket_name.'" value="'.$$obracket_name.'"/>'."\n";
if ( $save_to_session )
{
$_SESSION[$obracket_name] = $$obracket_name;
}
}
if ( isset($$attr_name) )
{
$filter_query .= "&$attr_name=".$$attr_name;
$filter_fields .= '<input type="hidden" name="'.$attr_name.'" value="'.$$attr_name.'"/>'."\n";
switch ( $$attr_name )
{
case 'MonitorName':
$filter_sql .= 'M.'.preg_replace( '/^Monitor/', '', $$attr_name );
break;
case 'Name':
$filter_sql .= "E.Name";
break;
case 'Cause':
$filter_sql .= "E.Cause";
break;
case 'DateTime':
$filter_sql .= "E.StartTime";
break;
case 'Date':
$filter_sql .= "to_days( E.StartTime )";
break;
case 'Time':
$filter_sql .= "extract( hour_second from E.StartTime )";
break;
case 'Weekday':
$filter_sql .= "weekday( E.StartTime )";
break;
case 'Id':
case 'Name':
case 'MonitorId':
case 'Length':
case 'Frames':
case 'AlarmFrames':
case 'TotScore':
case 'AvgScore':
case 'MaxScore':
$filter_sql .= "E.".$$attr_name;
break;
case 'Archived':
$filter_sql .= "E.Archived = ".$$value_name;
break;
case 'DiskPercent':
$filter_sql .= getDiskPercent();
break;
case 'DiskBlocks':
$filter_sql .= getDiskBlocks();
break;
}
$value_list = array();
foreach ( preg_split( '/["\'\s]*?,["\'\s]*?/', preg_replace( '/^["\']+?(.+)["\']+?$/', '$1', $$value_name ) ) as $value )
{
switch ( $$attr_name )
{
case 'MonitorName':
case 'Name':
case 'Cause':
$value = "'$value'";
break;
case 'DateTime':
$value = "'".strftime( "%Y-%m-%d %H:%M:%S", strtotime( $value ) )."'";
break;
case 'Date':
$value = "to_days( '".strftime( "%Y-%m-%d %H:%M:%S", strtotime( $value ) )."' )";
break;
case 'Time':
$value = "extract( hour_second from '".strftime( "%Y-%m-%d %H:%M:%S", strtotime( $value ) )."' )";
break;
case 'Weekday':
$value = "weekday( '".strftime( "%Y-%m-%d %H:%M:%S", strtotime( $value ) )."' )";
break;
}
$value_list[] = $value;
}
switch ( $$op_name )
{
case '=' :
case '!=' :
case '>=' :
case '>' :
case '<' :
case '<=' :
$filter_sql .= " ".$$op_name." $value";
break;
case '=~' :
$filter_sql .= " regexp $value";
break;
case '!~' :
$filter_sql .= " not regexp $value";
break;
case '=[]' :
$filter_sql .= " in (".join( ",", $value_list ).")";
break;
case '![]' :
$filter_sql .= " not in (".join( ",", $value_list ).")";
break;
}
$filter_query .= "&$op_name=".urlencode($$op_name);
$filter_fields .= '<input type="hidden" name="'.$op_name.'" value="'.$$op_name.'"/>'."\n";
$filter_query .= "&$value_name=".urlencode($$value_name);
$filter_fields .= '<input type="hidden" name="'.$value_name.'" value="'.$$value_name.'"/>'."\n";
if ( $save_to_session )
{
$_SESSION[$attr_name] = $$attr_name;
$_SESSION[$op_name] = $$op_name;
$_SESSION[$value_name] = $$value_name;
}
}
if ( isset($$cbracket_name) )
{
$filter_query .= "&$cbracket_name=".$$cbracket_name;
$filter_sql .= str_repeat( ")", $$cbracket_name );
$filter_fields .= '<input type="hidden" name="'.$cbracket_name.'" value="'.$$cbracket_name.'"/>'."\n";
if ( $save_to_session )
{
$_SESSION[$cbracket_name] = $$cbracket_name;
}
}
}
$filter_sql = " and ( $filter_sql )";
}
}
function getLoad()
{
$uptime = shell_exec( 'uptime' );
$load = '';
if ( preg_match( '/load average: ([\d.]+)/', $uptime, $matches ) )
$load = $matches[1];
return( $load );
}
function getDiskPercent()
{
$df = shell_exec( 'df '.ZM_DIR_EVENTS );
$space = -1;
if ( preg_match( '/\s(\d+)%/ms', $df, $matches ) )
$space = $matches[1];
return( $space );
}
function getDiskBlocks()
{
$df = shell_exec( 'df '.ZM_DIR_EVENTS );
$space = -1;
if ( preg_match( '/\s(\d+)\s+\d+\s+\d+%/ms', $df, $matches ) )
$space = $matches[1];
return( $space );
}
// Function to fix a problem whereby the built in PHP session handling
// features want to put the sid as a hidden field after the form or
// fieldset tag, neither of which will work with strict XHTML Basic.
function sidField()
{
if ( SID )
{
list( $sessname, $sessid ) = split( "=", SID );
?>
<input type="hidden" name="<?= $sessname ?>" value="<?= $sessid ?>"/>
<?php
}
}
?>