From: Alan Jack Pippin Date: Thu, 28 Jun 2007 13:44:09 +0000 (-0600) Subject: Added ability to check for "File not found" HTTP error when embedding link to remote... X-Git-Tag: 1_0_4~7 X-Git-Url: http://git.pippins.net/embedvideo/.git/%7Blink_hometeaching%7D?a=commitdiff_plain;h=2cffc34190c8edafe96dc51859ca3ca13e70ccde;p=embedvideo%2F.git Added ability to check for "File not found" HTTP error when embedding link to remote video file. --- diff --git a/ItemAddEmbedVideo.inc b/ItemAddEmbedVideo.inc index 7b79cc2..b8941f6 100644 --- a/ItemAddEmbedVideo.inc +++ b/ItemAddEmbedVideo.inc @@ -123,7 +123,7 @@ class ItemAddEmbedVideo extends ItemAddPlugin { GalleryCoreApi::fetchWebPage($feed, $extraHeaders); if (!$successfullyCopied) { return array(GalleryCoreApi::error(ERROR_BAD_PATH,__FILE__,__LINE__, - "Unable to get video information at url: $url"),null,null); + "Unable to get video information at url: $url - $response"),null,null); } @@ -181,7 +181,7 @@ class ItemAddEmbedVideo extends ItemAddPlugin { GalleryCoreApi::fetchWebPage($url, $extraHeaders); if (!$successfullyCopied) { return array(GalleryCoreApi::error(ERROR_BAD_PATH,__FILE__,__LINE__, - "Unable to get video information at url: $url"),null,null); + "Unable to get video information at url: $url - $response"),NULL,NULL); } /* Extract the summary from the webpage contents */ @@ -190,9 +190,12 @@ class ItemAddEmbedVideo extends ItemAddPlugin { $summary=$matches[1]; /* Extract the title from the webpage contents */ - preg_match('/(.+?)\s+- Google Video<\/title>/i', - $contents, $matches); - $title=$matches[1]; + $title="Unknown"; + if(preg_match('/<title>(.+?)\s+- Google Video<\/title>/i', $contents, $matches)) { + $title=$matches[1]; + } else if(preg_match('/<title>(.+?)<\/title>/i', $contents, $matches)) { + $title=$matches[1]; + } /* Extract the thumbnail URL from the webpage contents */ preg_match('/<img src="(http:\/\/video\.google\.com\/ThumbnailServer2.+?)" /i', @@ -234,11 +237,12 @@ class ItemAddEmbedVideo extends ItemAddPlugin { * Check to make sure the URL to the remote flv file is valid * (That the file exists at the URL given) */ - /* - * TODO: How can we check if the remote file exists without actually - * downloading the entire file? For now, if the file doesn't exist, - * a gallery item is still added, and the embedded player won't play it. - */ + list ($successfullyCopied, $response, $headers) = + $this->fetchWebFileHeaders($url, $extraHeaders); + if (!$successfullyCopied) { + return array(GalleryCoreApi::error(ERROR_BAD_PATH,__FILE__,__LINE__, + "Unable to find the video at url: $url - $response"),NULL,NULL); + } /* * Format the description to hold a reference to the embedded video @@ -347,7 +351,7 @@ class ItemAddEmbedVideo extends ItemAddPlugin { GalleryCoreApi::fetchWebFile($thumbnail, $tmpFile, $extraHeaders); if (!$successfullyCopied) { return array(GalleryCoreApi::error(ERROR_STORAGE_FAILURE,__FILE__,__LINE__, - "Unable to copy thumbnail from url: $url"),null,null); + "Unable to copy thumbnail from url: $url - $response"),null,null); } /* Obtain the mimeType of the thumbnail */ @@ -368,6 +372,7 @@ class ItemAddEmbedVideo extends ItemAddPlugin { print "thumbnail: $tmpFile <br>"; print "mimeType: $mimeType <br>"; print "fileName: $fileName <br>"; + print "<br><br><b>Video Successfully Added to your Gallery Album</b><br><br>"; } /* Make the gallery2 call to add this item to the album */ @@ -404,6 +409,103 @@ class ItemAddEmbedVideo extends ItemAddPlugin { return($params['default'][$name]); } } + + /** + * A simple function to get the headers only (no body) for a given URL + * + */ + function fetchWebFileHeaders($url, $requestHeaders=array()) { + global $gallery; + + $requestMethod='GET'; + + /* Convert illegal characters */ + $url = str_replace(' ', '%20', $url); + + /* Unescape ampersands, since if the URL comes from form input it will be escaped */ + $url = str_replace('&', '&', $url); + + $platform =& $gallery->getPlatform(); + + $urlComponents = parse_url($url); + if (empty($urlComponents['port'])) { + $urlComponents['port'] = 80; + } + if (empty($urlComponents['path'])) { + $urlComponents['path'] = '/'; + } + + $handle = @$platform->fsockopen( + $urlComponents['host'], $urlComponents['port'], $errno, $errstr, 5); + if (empty($handle)) { + $gallery->debug("Error $errno: '$errstr' requesting $url"); + return array(null, null, null); + } + + $requestUri = $urlComponents['path']; + if (!empty($urlComponents['query'])) { + $requestUri .= '?' . $urlComponents['query']; + } + $headerLines = array('Host: ' . $urlComponents['host']); + foreach ($requestHeaders as $key => $value) { + $headerLines[] = $key . ': ' . $value; + } + + $success = $platform->fwrite($handle, sprintf("%s %s HTTP/1.0\r\n%s\r\n\r\n%s", + $requestMethod, + $requestUri, + implode("\r\n", $headerLines), + $requestBody)); + if (!$success) { + /* Zero bytes written or false was returned */ + $gallery->debug( + "fwrite failed in requestWebPage($url)" . ($success === false ? ' - false' : '')); + return array(null, null, null); + } + $platform->fflush($handle); + + + /* + * Read the status line. fgets stops after newlines. The first line is the protocol + * version followed by a numeric status code and its associated textual phrase. + */ + $responseStatus = trim($platform->fgets($handle, 4096)); + if (empty($responseStatus)) { + $gallery->debug('Empty http response code, maybe timeout'); + return array(null, null, null); + } + + /* Read the headers */ + $responseHeaders = array(); + while (!$platform->feof($handle)) { + $line = trim($platform->fgets($handle, 4096)); + if (empty($line)) { + break; + } + + /* Normalize the line endings */ + $line = str_replace("\r", '', $line); + + list ($key, $value) = explode(':', $line, 2); + if (isset($responseHeaders[$key])) { + if (!is_array($responseHeaders[$key])) { + $responseHeaders[$key] = array($responseHeaders[$key]); + } + $responseHeaders[$key][] = trim($value); + } else { + $responseHeaders[$key] = trim($value); + } + } + $platform->fclose($handle); + + if(preg_match("/Not found/i", $responseStatus)) { + $success = 0; + } + + //print "success: $success <br>responseStatus: $responseStatus <br>responseHeaders: $responseHeaders <br>"; + + return array($success, $responseStatus, $responseHeaders); + } /** * @see ItemAdd:loadTemplate diff --git a/templates/ItemAddEmbedVideo.tpl b/templates/ItemAddEmbedVideo.tpl index a07a0b7..5aaaf3c 100644 --- a/templates/ItemAddEmbedVideo.tpl +++ b/templates/ItemAddEmbedVideo.tpl @@ -20,7 +20,7 @@ <br> <b><u>Supported Video Sites:</u></b> <br> - <b>YouTube:</b> http://video.google.com/videoplay?docid=xxxxxxxxxxx&hl=en<br> + <b>YouTube:</b> http://video.google.com/videoplay?docid=xxxxxxxxxxx<br> <b>GoogleVideo:</b> http://www.youtube.com/watch?v=xxxxxxxxxxx<br> <br> <b><u>Supported File Types:</u></b><br>