function hasMemoryForImage($serverFilename)
{
// find out how much total memory this script can access
$memoryAvailable = return_bytes(@ini_get('memory_limit'));
// if memory is unlimited, it will return -1 and we don’t need to worry about it
if ($memoryAvailable == -1) {
return true;
}
// find out how much memory we are already using
$memoryUsed = memory_get_usage();
$imgsize = @getimagesize($serverFilename);
// find out how much memory this image needs for processing, probably only works for jpegs
// from comments on http://www.php.net/imagecreatefromjpeg
if (is_array($imgsize) && isset($imgsize['bits']) && isset($imgsize['channels'])) {
$memoryNeeded = round(($imgsize[0] * $imgsize[1] * $imgsize['bits'] * $imgsize['channels'] / 8 + Pow(2, 16)) * 1.65);
$memorySpare = $memoryAvailable - $memoryUsed - $memoryNeeded;
if ($memorySpare > 0) {
// we have enough memory to load this file
return true;
} else {
// not enough memory to load this file
$image_info = sprintf('%.2fKB, %d × %d %d bits %d channels', filesize($serverFilename) / 1024, $imgsize[0], $imgsize[1], $imgsize['bits'], $imgsize['channels']);
Log::addMediaLog('Cannot create thumbnail ' . $serverFilename . ' (' . $image_info . ') memory avail: ' . $memoryAvailable . ' used: ' . $memoryUsed . ' needed: ' . $memoryNeeded . ' spare: ' . $memorySpare);
return false;
}
} else {
// assume there is enough memory
// TODO find out how to check memory needs for gif and png
return true;
}
}
/**
* get image properties
*
* @param string $which specify either 'main' or 'thumb'
* @param int $addWidth amount to add to width
* @param int $addHeight amount to add to height
*
* @return array
*/
public function getImageAttributes($which = 'main', $addWidth = 0, $addHeight = 0)
{
global $THUMBNAIL_WIDTH;
$var = $which . 'imagesize';
if (!empty($this->{$var})) {
return $this->{$var};
}
$imgsize = array();
if ($this->fileExists($which)) {
$imgsize = @getimagesize($this->getServerFilename($which));
// [0]=width [1]=height [2]=filetype ['mime']=mimetype
if (is_array($imgsize) && !empty($imgsize['0'])) {
// this is an image
$imgsize[0] = $imgsize[0] + 0;
$imgsize[1] = $imgsize[1] + 0;
$imgsize['adjW'] = $imgsize[0] + $addWidth;
// adjusted width
$imgsize['adjH'] = $imgsize[1] + $addHeight;
// adjusted height
$imageTypes = array('', 'GIF', 'JPG', 'PNG', 'SWF', 'PSD', 'BMP', 'TIFF', 'TIFF', 'JPC', 'JP2', 'JPX', 'JB2', 'SWC', 'IFF', 'WBMP', 'XBM');
$imgsize['ext'] = $imageTypes[0 + $imgsize[2]];
// this is for display purposes, always show non-adjusted info
$imgsize['WxH'] = WT_I18N::translate('%1$s × %2$s pixels', WT_I18N::number($imgsize['0']), WT_I18N::number($imgsize['1']));
$imgsize['imgWH'] = ' width="' . $imgsize['adjW'] . '" height="' . $imgsize['adjH'] . '" ';
if ($which == 'thumb' && $imgsize['0'] > $THUMBNAIL_WIDTH) {
// don’t let large images break the dislay
$imgsize['imgWH'] = ' width="' . $THUMBNAIL_WIDTH . '" ';
}
}
}
if (!is_array($imgsize) || empty($imgsize['0'])) {
// this is not an image, OR the file doesn’t exist OR it is a url
$imgsize[0] = 0;
$imgsize[1] = 0;
$imgsize['adjW'] = 0;
$imgsize['adjH'] = 0;
$imgsize['ext'] = '';
$imgsize['mime'] = '';
$imgsize['WxH'] = '';
$imgsize['imgWH'] = '';
if ($this->isExternal($which)) {
// don’t let large external images break the dislay
$imgsize['imgWH'] = ' width="' . $THUMBNAIL_WIDTH . '" ';
}
}
if (empty($imgsize['mime'])) {
// this is not an image, OR the file doesn’t exist OR it is a url
// set file type equal to the file extension - can’t use parse_url because this may not be a full url
$exp = explode('?', $this->file);
$pathinfo = pathinfo($exp[0]);
$imgsize['ext'] = @strtoupper($pathinfo['extension']);
// all mimetypes we wish to serve with the media firewall must be added to this array.
$mime = array('DOC' => 'application/msword', 'MOV' => 'video/quicktime', 'MP3' => 'audio/mpeg', 'PDF' => 'application/pdf', 'PPT' => 'application/vnd.ms-powerpoint', 'RTF' => 'text/rtf', 'SID' => 'image/x-mrsid', 'TXT' => 'text/plain', 'XLS' => 'application/vnd.ms-excel', 'WMV' => 'video/x-ms-wmv');
if (empty($mime[$imgsize['ext']])) {
// if we don’t know what the mimetype is, use something ambiguous
$imgsize['mime'] = 'application/octet-stream';
if ($this->fileExists($which)) {
// alert the admin if we cannot determine the mime type of an existing file
// as the media firewall will be unable to serve this file properly
Log::addMediaLog('Media Firewall error: >Unknown Mimetype< for file >' . $this->file . '<');
}
} else {
$imgsize['mime'] = $mime[$imgsize['ext']];
}
}
$this->{$var} = $imgsize;
return $this->{$var};
}
// save the image, if preferences allow
if ($which == 'thumb' && $SAVE_WATERMARK_THUMB || $which == 'main' && $SAVE_WATERMARK_IMAGE) {
// make sure the folder exists
if (!is_dir(dirname($watermarkfile))) {
mkdir(dirname($watermarkfile), WT_PERM_EXE, true);
}
// save the image
$imSendFunc($im, $watermarkfile);
}
// send the image
$imSendFunc($im);
imagedestroy($im);
exit;
} else {
// this image is defective. log it
Log::addMediaLog("Media Firewall error: >" . WT_I18N::translate('This media file is broken and cannot be watermarked') . "< in file >" . $serverFilename . "< memory used: " . memory_get_usage());
// set usewatermark to false so image will simply be passed through below
$usewatermark = false;
}
}
// pass the image through without manipulating it
if ($usewatermark) {
// the stored watermarked image is good, lets use it
$serverFilename = $watermarkfile;
}
// determine filesize of image (could be original or watermarked version)
$filesize = filesize($serverFilename);
// set content-length header, send file
header("Content-Length: " . $filesize);
// Some servers disable fpassthru() and readfile()
if (function_exists('readfile')) {
chmod($serverFileName, WT_PERM_FILE);
Log::addMediaLog('Media file ' . $serverFileName . ' uploaded');
} else {
WT_FlashMessages::addMessage(WT_I18N::translate('There was an error uploading your file.') . '<br>' . file_upload_error_text($_FILES['mediafile' . $i]['error']));
$filename = '';
break;
}
// Now copy the (optional thumbnail)
if (!empty($_FILES['thumbnail' . $i]['name']) && preg_match('/^image\\/(png|gif|jpeg)/', $_FILES['thumbnail' . $i]['type'], $match)) {
$extension = $match[1];
$thumbFile = preg_replace('/\\.[a-z0-9]{3,5}$/', '.' . $extension, $fileName);
$serverFileName = WT_DATA_DIR . $MEDIA_DIRECTORY . 'thumbs/' . $folderName . $thumbFile;
if (move_uploaded_file($_FILES['thumbnail' . $i]['tmp_name'], $serverFileName)) {
WT_FlashMessages::addMessage(WT_I18N::translate('The file %s was uploaded.', '<span class="filename">' . $serverFileName . '</span>'));
chmod($serverFileName, WT_PERM_FILE);
Log::addMediaLog('Thumbnail file ' . $serverFileName . ' uploaded');
}
}
}
}
}
}
$controller->pageHeader();
$mediaFolders = WT_Query_Media::folderListAll();
// Determine file size limit
// TODO: do we need to check post_max_size size too?
$filesize = ini_get('upload_max_filesize');
if (empty($filesize)) {
$filesize = "2M";
}
// Print the form
