051389606e
git-svn-id: file:///home/shish/svn/shimmie2/trunk@914 7f39781d-f577-437e-ae19-be835c7a54ca
132 lines
3.7 KiB
PHP
132 lines
3.7 KiB
PHP
<?php
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/**
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* Name: Flash File Handler
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* Author: Shish <webmaster@shishnet.org>
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* Description: Handle Flash files
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*/
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class FlashFileHandler extends Extension {
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var $theme;
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public function receive_event($event) {
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if(is_null($this->theme)) $this->theme = get_theme_object("handle_flash", "FlashFileHandlerTheme");
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if(is_a($event, 'DataUploadEvent') && $this->supported_ext($event->type) && $this->check_contents($event->tmpname)) {
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$hash = $event->hash;
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$ha = substr($hash, 0, 2);
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if(!move_upload_to_archive($event)) return;
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send_event(new ThumbnailGenerationEvent($event->hash, $event->type));
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$image = $this->create_image_from_data("images/$ha/$hash", $event->metadata);
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if(is_null($image)) {
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$event->veto("Flash Handler failed to create image object from data. ".
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"Note: compressed flash files are currently unsupported");
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return;
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}
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send_event(new ImageAdditionEvent($event->user, $image));
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}
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if(is_a($event, 'ThumbnailGenerationEvent') && $this->supported_ext($event->type)) {
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$hash = $event->hash;
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$ha = substr($hash, 0, 2);
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// FIXME: scale image, as not all boards use 192x192
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copy("ext/handle_flash/thumb.jpg", "thumbs/$ha/$hash");
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}
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if(is_a($event, 'DisplayingImageEvent') && $this->supported_ext($event->image->ext)) {
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$this->theme->display_image($event->page, $event->image);
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}
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}
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private function supported_ext($ext) {
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$exts = array("swf");
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return array_contains($exts, strtolower($ext));
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}
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private function create_image_from_data($filename, $metadata) {
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global $config;
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$image = new Image();
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$image->filesize = $metadata['size'];
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$image->hash = $metadata['hash'];
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$image->filename = $metadata['filename'];
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$image->ext = $metadata['extension'];
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$image->tag_array = tag_explode($metadata['tags']);
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$image->source = $metadata['source'];
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// redundant, since getimagesize() works on SWF o_O
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// $rect = $this->swf_get_bounds($filename);
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// if(is_null($rect)) {
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// return $null;
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// }
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// $image->width = $rect[1];
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// $image->height = $rect[3];
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if(!($info = getimagesize($filename))) return null;
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$image->width = $info[0];
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$image->height = $info[1];
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return $image;
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}
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private function str_to_binarray($string) {
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$binary = array();
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for($j=0; $j<strlen($string); $j++) {
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$c = ord($string[$j]);
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for($i=7; $i>=0; $i--) {
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$binary[] = ($c >> $i) & 0x01;
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}
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}
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return $binary;
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}
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private function binarray_to_int($binarray, $start=0, $length=32) {
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$int = 0;
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for($i=$start; $i<$start + $length; $i++) {
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$int = $int << 1;
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$int = $int + ($binarray[$i] == "1" ? 1 : 0);
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}
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return $int;
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}
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private function swf_get_bounds($filename) {
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$fp = fopen($filename, "r");
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$head = fread($fp, 3);
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$version = fread($fp, 1);
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$length = fread($fp, 4);
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if($head == "FWS") {
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$data = fread($fp, 16);
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}
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else if($head == "CWS") {
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$data = fread($fp, 128*1024);
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$data = gzuncompress($data);
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$data = substr($data, 0, 16);
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}
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$bounds = array();
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$rect_bin = $this->str_to_binarray($data);
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$nbits = $this->binarray_to_int($rect_bin, 0, 5);
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$bounds[] = $this->binarray_to_int($rect_bin, 5 + 0 * $nbits, $nbits) / 20;
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$bounds[] = $this->binarray_to_int($rect_bin, 5 + 1 * $nbits, $nbits) / 20;
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$bounds[] = $this->binarray_to_int($rect_bin, 5 + 2 * $nbits, $nbits) / 20;
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$bounds[] = $this->binarray_to_int($rect_bin, 5 + 3 * $nbits, $nbits) / 20;
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return $bounds;
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}
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private function check_contents($file) {
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if(!file_exists($file)) return false;
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$fp = fopen($file, "r");
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$head = fread($fp, 3);
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fclose($fp);
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if(!array_contains(array("CWS", "FWS"), $head)) return false;
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return true;
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}
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}
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add_event_listener(new FlashFileHandler());
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?>
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