585 lines
22 KiB
PHP
585 lines
22 KiB
PHP
<?php
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//
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// ZoneMinder web image view file, $Date: 2008-09-29 14:15:13 +0100 (Mon, 29 Sep 2008) $, $Revision: 2640 $
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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//
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// Calling sequence: ... /zm/index.php?view=image&path=/monid/path/image.jpg&scale=nnn&width=wwww&height=hhhhh
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//
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// Path is physical path to the image starting at the monitor id
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//
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// Scale is optional and between 1 and 400 (percent),
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// Omitted or 100 = no scaling done, image passed through directly
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// Scaling will increase response time slightly
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//
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// width and height are each optional, ideally supply both, but if only one is supplied the other is calculated
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// These are in pixels
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//
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// If both scale and either width or height are specified, scale is ignored
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//
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if ( !canView('Events') and ($_REQUEST['fid'] != 'snapshot' or !canView('Snapshots'))) {
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$view = 'error';
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return;
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}
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require_once('includes/Event.php');
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require_once('includes/Frame.php');
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// Compatibility for PHP 5.4
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if ( !function_exists('imagescale') ) {
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function imagescale($image, $new_width, $new_height = -1, $mode = 0) {
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$mode; // Not supported
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$new_height = ($new_height == -1) ? imagesy($image) : $new_height;
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$imageNew = imagecreatetruecolor($new_width, $new_height);
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imagecopyresampled($imageNew, $image, 0, 0, 0, 0, (int)$new_width, (int)$new_height, imagesx($image), imagesy($image));
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return $imageNew;
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}
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}
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if (!empty($_REQUEST['proxy'])) {
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$url = $_REQUEST['proxy'];
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if (!$url) {
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ZM\Warning('No url passed to image proxy');
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return;
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}
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$url_parts = parse_url($url);
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$username = $url_parts['user'];
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$password = isset($url_parts['pass']) ? $url_parts['pass'] : '';
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$method = 'GET';
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// preparing http options:
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$opts = array(
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'http'=>array(
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'method'=>$method,
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#'header'=>"Accept-language: en\r\n" .
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'ignore_errors' => true
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#"Cookie: foo=bar\r\n"
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),
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'ssl'=>array(
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"verify_peer"=>false,
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"verify_peer_name"=>false,
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)
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);
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$context = stream_context_create($opts);
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// set no time limit and disable compression:
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set_time_limit(5);
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if (function_exists('apache_setenv')) @apache_setenv('no-gzip', 1);
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@ini_set('zlib.output_compression', 0);
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/* Sends an http request with additional headers shown above */
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$fp = @fopen($url, 'r', false, $context);
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if ($fp) {
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$meta_data = stream_get_meta_data($fp);
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ZM\Debug(print_r($meta_data, true));
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foreach ($meta_data['wrapper_data'] as $header) {
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preg_match('/WWW-Authenticate: Digest (.*)/i', $header, $matches);
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$nc = 1;
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if (!empty($matches)) {
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ZM\Debug("Matched $header");
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$auth_header = $matches[1];
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$auth_header_array = explode(',', $auth_header);
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$parsed = array();
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foreach ($auth_header_array as $pair) {
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preg_match('/^\s*(\w+)="?(.+)"?\s*$/', $pair, $vals);
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if (!empty($vals)) {
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$parsed[$vals[1]] = trim($vals[2], '"');
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} else {
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ZM\Debug("Didn't match preg $pair");
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}
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}
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ZM\Debug(print_r($parsed, true));
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$cnonce = uniqid();
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$response_realm = (isset($parsed['realm'])) ? $parsed['realm'] : '';
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$response_nonce = (isset($parsed['nonce'])) ? $parsed['nonce'] : '';
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$response_opaque = (isset($parsed['opaque'])) ? $parsed['opaque'] : '';
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$authenticate1 = md5($username.':'.$response_realm.':'.$password);
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$authenticate2 = md5($method.':'.$url);
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$digestData = $authenticate1.':'.$response_nonce;
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if (!empty($parsed['qop'])) {
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$digestData .= ':' . sprintf('%08x', $nc) . ':' . $cnonce . ':' . $parsed['qop'];
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}
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$authenticate_response = md5($digestData.':'.$authenticate2);
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$request = sprintf('Authorization: Digest username="%s", realm="%s", nonce="%s", uri="%s", response="%s"',
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$username, $response_realm, $response_nonce, $url, $authenticate_response);
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if (!empty($parsed['opaque'])) $request .= ', opaque="'.$parsed['opaque'].'"';
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if (!empty($parsed['qop'])) {
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$request .= ', qop="'.$parsed['qop'].'"';
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$request .= ', nc="'.sprintf('%08x', $nc).'"';
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$nc++;
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$request .= ', cnonce="'.$cnonce.'"';
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}
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$request .= ', algorithm="MD5"';
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ZM\Debug($request);
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$request_header = array($request);
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$opts['http']['header'] = $request;
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$context = stream_context_create($opts);
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$fp = fopen($url, 'r', false, $context);
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$meta_data = stream_get_meta_data($fp);
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ZM\Debug(print_r($meta_data, true));
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} # end if have auth
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} # end foreach header
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# Read in until we either stop reading or have a second Content-Length
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$r = '';
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while (substr_count($r, 'Content-Length') != 2) {
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$new = fread($fp, 512);
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if (!$new) break;
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$r .= $new;
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}
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#ZM\Debug($r);
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$start = strpos($r, "\xff");
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if (false !== $start) {
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header('Content-type: image/jpeg');
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$end = strpos($r, "--\n", $start)-1;
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if ($end > $start) {
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$frame = substr($r, $start, $end - $start);
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ZM\Debug("Start $start end $end");
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if (imagecreatefromstring($frame)) {
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echo $frame;
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}
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} else {
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# This is possibly an XSS but I don't see how to get around it other than actually trying to parse it as a valid image first.
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# So we only output it if imagecreatefromdata succeeds
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if (imagecreatefromstring($r)) {
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echo $r;
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}
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}
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} else {
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$img = imagecreate(320, 240);
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$textbgcolor = imagecolorallocate($img, 0, 0, 0);
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$textcolor = imagecolorallocate($img, 255, 255, 255);
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imagestring($img, 5, 5, 5, 'Authentication Failed', $textcolor);
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header('Content-type: image/jpeg');
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imagejpeg($img);
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}
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fclose($fp);
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} else {
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ZM\Debug("Failed to open $url");
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$img = imagecreate(320, 200);
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$textbgcolor = imagecolorallocate($img, 0, 0, 0);
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$textcolor = imagecolorallocate($img, 255, 255, 255);
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imagestring($img, 5, 5, 5, 'Failed to open', $textcolor);
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header('Content-type: image/jpeg');
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imagejpeg($img);
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}
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return;
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}
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$errorText = false;
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$filename = '';
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$Frame = null;
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$Event = null;
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$path = null;
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$media_type='image/jpeg';
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if ( empty($_REQUEST['path']) ) {
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$show = empty($_REQUEST['show']) ? 'capture' : $_REQUEST['show'];
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if ( empty($_REQUEST['fid']) ) {
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header('HTTP/1.0 404 Not Found');
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ZM\Error('No Frame ID specified');
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return;
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}
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if ( !empty($_REQUEST['eid']) ) {
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$Event = ZM\Event::find_one(array('Id'=>$_REQUEST['eid']));
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if ( !$Event ) {
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header('HTTP/1.0 404 Not Found');
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ZM\Error('Event '.$_REQUEST['eid'].' Not found');
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return;
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}
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if ( $_REQUEST['fid'] == 'objdetect' ) {
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// if animation file is found, return that, else return image
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// we are only looking for GIF or jpg here, not mp4
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// as most often, browsers asking for this link will be expecting
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// media types that can be rendered as <img src=>
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$path_anim_gif = $Event->Path().'/objdetect.gif';
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$path_image = $Event->Path().'/objdetect.jpg';
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if (file_exists($path_anim_gif)) {
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// we found the animation gif file
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$media_type = 'image/gif';
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ZM\Debug("Animation file found at $path");
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$path = $path_anim_gif;
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} else if (file_exists($path_image)) {
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// animation not found, but image found
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ZM\Debug("Image file found at $path");
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$path = $path_image;
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} else {
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// neither animation nor image found
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header('HTTP/1.0 404 Not Found');
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ZM\Error('Object detection animation and image not found for this event');
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return;
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}
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$Frame = new ZM\Frame();
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$Frame->Id('objdetect');
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} else if ( $_REQUEST['fid'] == 'objdetect_mp4' ) {
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$path = $Event->Path().'/objdetect.mp4';
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if ( !file_exists($path) ) {
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header('HTTP/1.0 404 Not Found');
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ZM\Error("File $path does not exist. You might not have enabled create_animation in objectconfig.ini. If you have, inspect debug logs for errors during creation");
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return;
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}
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$Frame = new ZM\Frame();
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$Frame->Id('objdetect');
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$media_type = 'video/mp4';
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} else if ( $_REQUEST['fid'] == 'objdetect_gif' ) {
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$path = $Event->Path().'/objdetect.gif';
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if ( !file_exists($path) ) {
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header('HTTP/1.0 404 Not Found');
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ZM\Error("File $path does not exist. You might not have enabled create_animation in objectconfig.ini. If you have, inspect debug logs for errors during creation");
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return;
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}
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$Frame = new ZM\Frame();
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$Frame->Id('objdetect');
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$media_type = 'image/gif';
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} else if ( $_REQUEST['fid'] == 'objdetect_jpg' ) {
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$path = $Event->Path().'/objdetect.jpg';
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if ( !file_exists($path) ) {
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header('HTTP/1.0 404 Not Found');
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ZM\Error("File $path does not exist. Please make sure store_frame_in_zm is enabled in the object detection config");
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return;
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}
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$Frame = new ZM\Frame();
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$Frame->Id('objdetect');
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} else if ( $_REQUEST['fid'] == 'alarm' ) {
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$path = $Event->Path().'/alarm.jpg';
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if ( !file_exists($path) ) {
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# legacy support
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# look for first alarmed frame
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$Frame = ZM\Frame::find_one(
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array('EventId'=>$_REQUEST['eid'], 'Type'=>'Alarm'),
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array('order'=>'FrameId ASC'));
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if ( !$Frame ) { # no alarms, get first one I find
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$Frame = ZM\Frame::find_one(array('EventId'=>$_REQUEST['eid']));
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if ( !$Frame ) {
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ZM\Warning('No frame found for event '.$_REQUEST['eid']);
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$Frame = new ZM\Frame();
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$Frame->Delta(1);
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$Frame->FrameId(1);
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}
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}
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if ( $Event->SaveJPEGs() & 1 ) {
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# If we store Frames as jpgs, then we don't store an alarmed snapshot
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$path = $Event->Path().'/'.sprintf('%0'.ZM_EVENT_IMAGE_DIGITS.'d', $Frame->FrameId()).'-'.$show.'.jpg';
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} else {
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header('HTTP/1.0 404 Not Found');
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ZM\Debug('No alarm jpg found for event '.$_REQUEST['eid'].' at '.$path);
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return;
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}
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} else {
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$Frame = new ZM\Frame();
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$Frame->Delta(1);
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$Frame->FrameId('alarm');
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} # alarm.jpg found
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} else if ( $_REQUEST['fid'] == 'snapshot' ) {
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$path = $Event->Path().'/snapshot.jpg';
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if ( !file_exists($path) ) {
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$Frame = ZM\Frame::find_one(array('EventId'=>$_REQUEST['eid'], 'Score'=>$Event->MaxScore()));
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if ( !$Frame )
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$Frame = ZM\Frame::find_one(array('EventId'=>$_REQUEST['eid']));
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if ( !$Frame ) {
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ZM\Warning('No frame found for event ' . $_REQUEST['eid']);
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$Frame = new ZM\Frame();
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$Frame->Delta(1);
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if ( $Event->SaveJPEGs() & 1 ) {
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$Frame->FrameId(0);
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} else {
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$Frame->FrameId('snapshot');
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}
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}
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if ( $Event->SaveJPEGs() & 1 ) {
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# If we store Frames as jpgs, then we don't store a snapshot
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$path = $Event->Path().'/'.sprintf('%0'.ZM_EVENT_IMAGE_DIGITS.'d', $Frame->FrameId()).'-'.$show.'.jpg';
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} else {
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if ( $Event->DefaultVideo() ) {
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$file_path = $Event->Path().'/'.$Event->DefaultVideo();
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if (!file_exists($file_path)) {
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if ($file = find_video($Event->Path())) {
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$file_path = $Event->Path().'/'.$file;
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}
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}
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if (file_exists($file_path)) {
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$command = ZM_PATH_FFMPEG.' -ss '. $Frame->Delta() .' -i '.$file_path.' -frames:v 1 '.$path . ' 2>&1';
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#$command ='ffmpeg -ss '. $Frame->Delta() .' -i '.$Event->Path().'/'.$Event->DefaultVideo().' -vf "select=gte(n\\,'.$Frame->FrameId().'),setpts=PTS-STARTPTS" '.$path;
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#$command ='ffmpeg -v 0 -i '.$Storage->Path().'/'.$Event->Path().'/'.$Event->DefaultVideo().' -vf "select=gte(n\\,'.$Frame->FrameId().'),setpts=PTS-STARTPTS" '.$path;
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ZM\Debug("Running $command");
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$output = array();
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$retval = 0;
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exec($command, $output, $retval);
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ZM\Debug("Command: $command, retval: $retval, output: " . implode("\n", $output));
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if ( ! file_exists($path) ) {
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header('HTTP/1.0 404 Not Found');
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ZM\Error('Can\'t create frame images from video for this event '.$Event->DefaultVideo().'
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Command was: '.$command.'
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Output was: '.implode(PHP_EOL,$output) );
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return;
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}
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# Generating an image file will use up more disk space, so update the Event record.
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if ( $Event->EndDateTime() ) {
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$Event->DiskSpace(null);
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}
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} else {
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header('HTTP/1.0 404 Not Found');
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ZM\Error('Can\'t create frame images from missing video file at '.$Event->DefaultVideo());
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}
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} else {
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header('HTTP/1.0 404 Not Found');
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ZM\Error('No snapshot jpg found for event '.$_REQUEST['eid']);
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return;
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}
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} # end if stored jpgs
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} else {
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$Frame = new ZM\Frame();
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$Frame->Delta(1);
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$Frame->FrameId('snapshot');
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} # end if found snapshot.jpg
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} else {
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$Frame = ZM\Frame::find_one(array('EventId'=>$_REQUEST['eid'], 'FrameId'=>$_REQUEST['fid']));
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if (!$Frame) {
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$Frame = $Event->find_virtual_frame($_REQUEST['fid']);
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if (!$Frame) {
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header('HTTP/1.0 404 Not Found');
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ZM\Error('No Frame found for event('.$_REQUEST['eid'].') and frame id('.$_REQUEST['fid'].')');
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return;
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}
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} # end if !Frame
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// Frame can be non-existent. We have Bulk frames. So now we should try to load the bulk frame
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$path = $Event->Path().'/'.sprintf('%0'.ZM_EVENT_IMAGE_DIGITS.'d',$Frame->FrameId()).'-'.$show.'.jpg';
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} # if special frame (snapshot, alarm etc) or identified by id
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} else {
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# If we are only specifying fid, then the fid must be the primary key into the frames table. But when the event is specified, then it is the frame #
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$Frame = ZM\Frame::find_one(array('Id'=>$_REQUEST['fid']));
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if ( !$Frame ) {
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header('HTTP/1.0 404 Not Found');
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ZM\Error('Frame ' . $_REQUEST['fid'] . ' Not Found');
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return;
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}
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$Event = ZM\Event::find_one(array('Id'=>$Frame->EventId()));
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if ( !$Event ) {
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header('HTTP/1.0 404 Not Found');
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ZM\Error('Event ' . $Frame->EventId() . ' Not Found');
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return;
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}
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$path = $Event->Path().'/'.sprintf('%0'.ZM_EVENT_IMAGE_DIGITS.'d',$Frame->FrameId()).'-'.$show.'.jpg';
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} # end if have eid
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if ( !file_exists($path) ) {
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ZM\Debug("$path does not exist");
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# Generate the frame JPG
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if ( ($show == 'capture') and $Event->DefaultVideo() ) {
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$file_path = $Event->Path().'/'.$Event->DefaultVideo();
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if (!file_exists($file_path)) {
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if ($file = find_video($Event->Path())) {
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$file_path = $Event->Path().'/'.$file;
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}
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}
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if (!file_exists($file_path)) {
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header('HTTP/1.0 404 Not Found');
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ZM\Error("Can't create frame images from video because there is no video file for this event at (".$Event->Path().'/'.$Event->DefaultVideo() );
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return;
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}
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$command = ZM_PATH_FFMPEG.' -ss '. $Frame->Delta() .' -i '.$file_path.' -frames:v 1 '.$path . ' 2>&1';
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#$command ='ffmpeg -ss '. $Frame->Delta() .' -i '.$Event->Path().'/'.$Event->DefaultVideo().' -vf "select=gte(n\\,'.$Frame->FrameId().'),setpts=PTS-STARTPTS" '.$path;
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#$command ='ffmpeg -v 0 -i '.$Storage->Path().'/'.$Event->Path().'/'.$Event->DefaultVideo().' -vf "select=gte(n\\,'.$Frame->FrameId().'),setpts=PTS-STARTPTS" '.$path;
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ZM\Debug("Running $command");
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$output = array();
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$retval = 0;
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exec($command, $output, $retval);
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ZM\Debug("Command: $command, retval: $retval, output: " . implode("\n", $output));
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if ( ! file_exists($path) ) {
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header('HTTP/1.0 404 Not Found');
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ZM\Error('Can\'t create frame images from video for this event '.$Event->DefaultVideo().'
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Command was: '.$command.'
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Output was: '.implode(PHP_EOL,$output) );
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return;
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}
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# Generating an image file will use up more disk space, so update the Event record.
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if ( $Event->EndDateTime() ) {
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|
$Event->DiskSpace(null);
|
|
}
|
|
} else {
|
|
header('HTTP/1.0 404 Not Found');
|
|
ZM\Error("Can't create frame $show images from video because there is no video file for this event at ".
|
|
$Event->Path().'/'.$Event->DefaultVideo() );
|
|
return;
|
|
}
|
|
} # end if ! file_exists($path)
|
|
}
|
|
|
|
# we now load the actual image to send
|
|
$scale = 0;
|
|
if ( !empty($_REQUEST['scale']) ) {
|
|
if ( is_numeric($_REQUEST['scale']) ) {
|
|
$x = $_REQUEST['scale'];
|
|
if ( $x >= 1 and $x <= 400 )
|
|
$scale = $x;
|
|
}
|
|
}
|
|
|
|
$width = 0;
|
|
if ( !empty($_REQUEST['width']) ) {
|
|
if ( is_numeric($_REQUEST['width']) ) {
|
|
$x = $_REQUEST['width'];
|
|
if ( $x >= 10 and $x <= 8000 )
|
|
$width = $x;
|
|
}
|
|
}
|
|
|
|
$height = 0;
|
|
if ( !empty($_REQUEST['height']) ) {
|
|
if ( is_numeric($_REQUEST['height']) ) {
|
|
$x = $_REQUEST['height'];
|
|
if ( $x >= 10 and $x <= 8000 )
|
|
$height = $x;
|
|
}
|
|
}
|
|
|
|
if ( $errorText ) {
|
|
ZM\Error($errorText);
|
|
} else {
|
|
# Must lock it because zmc may be still writing the jpg and will have a lock on it.
|
|
$fp_path = fopen($path, 'r');
|
|
$lock = flock($fp_path, LOCK_SH);
|
|
if (!$lock) ZM\Warning("Unable to get a read lock on $path, continuing.");
|
|
|
|
header('Content-type: '.$media_type);
|
|
header('Cache-Control: max-age=86400');
|
|
header('Expires: '.gmdate('D, d M Y H:i:s \G\M\T', time() + (60 * 60))); // Default set to 1 hour
|
|
header('Pragma: cache');
|
|
if (($scale==0 || $scale==100) && ($width==0) && ($height==0)) {
|
|
# This is so that Save Image As give a useful filename
|
|
if ($Event) {
|
|
$filename = $Event->MonitorId().'_'.$Event->Id().'_'.$Frame->FrameId().'.jpg';
|
|
header('Content-Disposition: inline; filename="' . $filename . '"');
|
|
}
|
|
if (!readfile($path)) {
|
|
ZM\Error('No bytes read from '. $path);
|
|
}
|
|
} else {
|
|
ZM\Debug("Doing a scaled image: scale($scale) width($width) height($height)");
|
|
$i = null;
|
|
if ( ! ( $width && $height ) ) {
|
|
$i = imagecreatefromjpeg($path);
|
|
$oldWidth = imagesx($i);
|
|
$oldHeight = imagesy($i);
|
|
if ( $width == 0 && $height == 0 ) { // scale has to be set to get here with both zero
|
|
$width = intval($oldWidth * $scale / 100.0);
|
|
$height= intval($oldHeight * $scale / 100.0);
|
|
} elseif ( $width == 0 && $height != 0 ) {
|
|
$width = intval(($height * $oldWidth) / $oldHeight);
|
|
} elseif ( $width != 0 && $height == 0 ) {
|
|
$height = intval(($width * $oldHeight) / $oldWidth);
|
|
ZM\Debug("Figuring out height using width: $height = ($width * $oldHeight) / $oldWidth");
|
|
}
|
|
if ( $width == $oldWidth && $height == $oldHeight ) {
|
|
ZM\Warning('No change to width despite scaling.');
|
|
}
|
|
}
|
|
|
|
# Slight optimisation, thumbnails always specify width and height, so we can cache them.
|
|
$scaled_path = preg_replace('/\.jpg$/', "-${width}x${height}.jpg", $path);
|
|
if ($Event) {
|
|
$filename = $Event->MonitorId().'_'.$Event->Id().'_'.$Frame->FrameId()."-${width}x${height}.jpg";
|
|
header('Content-Disposition: inline; filename="' . $filename . '"');
|
|
}
|
|
|
|
if (!file_exists($scaled_path)) {
|
|
ZM\Debug("Cached scaled image does not exist at $scaled_path. Creating it");
|
|
|
|
if (!$i) {
|
|
$i = imagecreatefromjpeg($path);
|
|
}
|
|
if (!$i) {
|
|
ZM\Error('Unable to load jpeg from '.$scaled_path);
|
|
$i = imagecreatetruecolor($width, $height);
|
|
$bg_colour = imagecolorallocate($i, 255, 255, 255);
|
|
$fg_colour = imagecolorallocate($i, 0, 0, 0);
|
|
imagefilledrectangle($i, 0, 0, $width, $height, $bg_colour);
|
|
imagestring($i, 1, 5, 5, 'Unable to load jpeg from ' . $scaled_path, $fg_colour);
|
|
imagejpeg($i);
|
|
} else {
|
|
ZM\Debug("Have image scaling to $width x $height");
|
|
ob_start();
|
|
$iScale = imagescale($i, $width, $height);
|
|
imagejpeg($iScale);
|
|
imagedestroy($i);
|
|
imagedestroy($iScale);
|
|
$scaled_jpeg_data = ob_get_contents();
|
|
file_put_contents($scaled_path, $scaled_jpeg_data, LOCK_EX);
|
|
|
|
echo $scaled_jpeg_data;
|
|
}
|
|
} else {
|
|
$fp_scaled_path = fopen($scaled_path, 'r');
|
|
$lock = flock($fp_scaled_path, LOCK_SH);
|
|
if (!$lock) Warning("Unable to get a read lock on $scaled_path, trying to send anyways.");
|
|
|
|
ZM\Debug("Sending $scaled_path");
|
|
$bytes = readfile($scaled_path);
|
|
if ( !$bytes ) {
|
|
ZM\Error('No bytes read from '. $scaled_path);
|
|
} else {
|
|
ZM\Debug("$bytes sent");
|
|
}
|
|
flock($fp_scaled_path, LOCK_UN);
|
|
fclose($fp_scaled_path);
|
|
} # end if scaled image doesn't exist or failed sending it
|
|
|
|
} # end if scaled or not
|
|
flock($fp_path, LOCK_UN);
|
|
fclose($fp_path);
|
|
}
|
|
|
|
function find_video($path) {
|
|
# Look for other mp4s
|
|
if (file_exists($path)) {
|
|
$files = scandir($path);
|
|
foreach ($files as $file) {
|
|
if (preg_match('/.mp4$/i', $file)) {
|
|
return $file;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
exit();
|