/**
* Gets the latest version code from the Git repository
*
* The code is read from the raw content of the version file on the Git server.
*
* @return mixed the version code from the repository if available, else 'false'
*/
public static function getLatestGitVersionCode($url, $timeout = 2)
{
list($headers, $data) = get_http_response($url, $timeout);
if (strpos($headers[0], '200 OK') === false) {
error_log('Failed to retrieve ' . $url);
return false;
}
return str_replace(array(self::$VERSION_START_TAG, self::$VERSION_END_TAG, PHP_EOL), array('', '', ''), $data);
}
function genThumbnail()
{
// Make sure the parameters in the URL were generated by us.
$sign = hash_hmac('sha256', $_GET['url'], $GLOBALS['salt']);
if ($sign != $_GET['hmac']) {
die('Naughty boy!');
}
// Let's see if we don't already have the image for this URL in the cache.
$thumbname = hash('sha1', $_GET['url']) . '.jpg';
if (is_file($GLOBALS['config']['CACHEDIR'] . '/' . $thumbname)) {
// We have the thumbnail, just serve it:
header('Content-Type: image/jpeg');
echo file_get_contents($GLOBALS['config']['CACHEDIR'] . '/' . $thumbname);
return;
}
// We may also serve a blank image (if service did not respond)
$blankname = hash('sha1', $_GET['url']) . '.gif';
if (is_file($GLOBALS['config']['CACHEDIR'] . '/' . $blankname)) {
header('Content-Type: image/gif');
echo file_get_contents($GLOBALS['config']['CACHEDIR'] . '/' . $blankname);
return;
}
// Otherwise, generate the thumbnail.
$url = $_GET['url'];
$domain = parse_url($url, PHP_URL_HOST);
if ($domain == 'flickr.com' || endsWith($domain, '.flickr.com')) {
// Crude replacement to handle new flickr domain policy (They prefer www. now)
$url = str_replace('http://flickr.com/', 'http://www.flickr.com/', $url);
// Is this a link to an image, or to a flickr page ?
$imageurl = '';
if (endswith(parse_url($url, PHP_URL_PATH), '.jpg')) {
// This is a direct link to an image. e.g. http://farm1.staticflickr.com/5/5921913_ac83ed27bd_o.jpg
preg_match('!(http://farm\\d+\\.staticflickr\\.com/\\d+/\\d+_\\w+_)\\w.jpg!', $url, $matches);
if (!empty($matches[1])) {
$imageurl = $matches[1] . 'm.jpg';
}
} else {
// Get the flickr html page.
list($headers, $content) = get_http_response($url, 20);
if (strpos($headers[0], '200 OK') !== false) {
// flickr now nicely provides the URL of the thumbnail in each flickr page.
preg_match('!<link rel=\\"image_src\\" href=\\"(.+?)\\"!', $content, $matches);
if (!empty($matches[1])) {
$imageurl = $matches[1];
}
// In albums (and some other pages), the link rel="image_src" is not provided,
// but flickr provides:
// <meta property="og:image" content="http://farm4.staticflickr.com/3398/3239339068_25d13535ff_z.jpg" />
if ($imageurl == '') {
preg_match('!<meta property=\\"og:image\\" content=\\"(.+?)\\"!', $content, $matches);
if (!empty($matches[1])) {
$imageurl = $matches[1];
}
}
}
}
if ($imageurl != '') {
// Let's download the image.
// Image is 240x120, so 10 seconds to download should be enough.
list($headers, $content) = get_http_response($imageurl, 10);
if (strpos($headers[0], '200 OK') !== false) {
// Save image to cache.
file_put_contents($GLOBALS['config']['CACHEDIR'] . '/' . $thumbname, $content);
header('Content-Type: image/jpeg');
echo $content;
return;
}
}
} elseif ($domain == 'vimeo.com') {
// This is more complex: we have to perform a HTTP request, then parse the result.
// Maybe we should deport this to JavaScript ? Example: http://stackoverflow.com/questions/1361149/get-img-thumbnails-from-vimeo/4285098#4285098
$vid = substr(parse_url($url, PHP_URL_PATH), 1);
list($headers, $content) = get_http_response('https://vimeo.com/api/v2/video/' . escape($vid) . '.php', 5);
if (strpos($headers[0], '200 OK') !== false) {
$t = unserialize($content);
$imageurl = $t[0]['thumbnail_medium'];
// Then we download the image and serve it to our client.
list($headers, $content) = get_http_response($imageurl, 10);
if (strpos($headers[0], '200 OK') !== false) {
// Save image to cache.
file_put_contents($GLOBALS['config']['CACHEDIR'] . '/' . $thumbname, $content);
header('Content-Type: image/jpeg');
echo $content;
return;
}
}
} elseif ($domain == 'ted.com' || endsWith($domain, '.ted.com')) {
// The thumbnail for TED talks is located in the <link rel="image_src" [...]> tag on that page
// http://www.ted.com/talks/mikko_hypponen_fighting_viruses_defending_the_net.html
// <link rel="image_src" href="http://images.ted.com/images/ted/28bced335898ba54d4441809c5b1112ffaf36781_389x292.jpg" />
list($headers, $content) = get_http_response($url, 5);
if (strpos($headers[0], '200 OK') !== false) {
// Extract the link to the thumbnail
preg_match('!link rel="image_src" href="(http://images.ted.com/images/ted/.+_\\d+x\\d+\\.jpg)"!', $content, $matches);
if (!empty($matches[1])) {
// Let's download the image.
$imageurl = $matches[1];
// No control on image size, so wait long enough
list($headers, $content) = get_http_response($imageurl, 20);
if (strpos($headers[0], '200 OK') !== false) {
$filepath = $GLOBALS['config']['CACHEDIR'] . '/' . $thumbname;
file_put_contents($filepath, $content);
// Save image to cache.
if (resizeImage($filepath)) {
header('Content-Type: image/jpeg');
echo file_get_contents($filepath);
return;
}
}
}
}
} elseif ($domain == 'xkcd.com' || endsWith($domain, '.xkcd.com')) {
// There is no thumbnail available for xkcd comics, so download the whole image and resize it.
// http://xkcd.com/327/
// <img src="http://imgs.xkcd.com/comics/exploits_of_a_mom.png" title="<BLABLA>" alt="<BLABLA>" />
list($headers, $content) = get_http_response($url, 5);
if (strpos($headers[0], '200 OK') !== false) {
// Extract the link to the thumbnail
preg_match('!<img src="(http://imgs.xkcd.com/comics/.*)" title="[^s]!', $content, $matches);
if (!empty($matches[1])) {
// Let's download the image.
$imageurl = $matches[1];
// No control on image size, so wait long enough
list($headers, $content) = get_http_response($imageurl, 20);
if (strpos($headers[0], '200 OK') !== false) {
$filepath = $GLOBALS['config']['CACHEDIR'] . '/' . $thumbname;
// Save image to cache.
file_put_contents($filepath, $content);
if (resizeImage($filepath)) {
header('Content-Type: image/jpeg');
echo file_get_contents($filepath);
return;
}
}
}
}
} else {
// For all other domains, we try to download the image and make a thumbnail.
// We allow 30 seconds max to download (and downloads are limited to 4 Mb)
list($headers, $content) = get_http_response($url, 30);
if (strpos($headers[0], '200 OK') !== false) {
$filepath = $GLOBALS['config']['CACHEDIR'] . '/' . $thumbname;
// Save image to cache.
file_put_contents($filepath, $content);
if (resizeImage($filepath)) {
header('Content-Type: image/jpeg');
echo file_get_contents($filepath);
return;
}
}
}
// Otherwise, return an empty image (8x8 transparent gif)
$blankgif = base64_decode('R0lGODlhCAAIAIAAAP///////yH5BAEKAAEALAAAAAAIAAgAAAIHjI+py+1dAAA7');
file_put_contents($GLOBALS['config']['CACHEDIR'] . '/' . $blankname, $blankgif);
// Also put something in cache so that this URL is not requested twice.
header('Content-Type: image/gif');
echo $blankgif;
}
function send_http_request($request = '', $host = '', $port = 80)
{
$host = $host ? $host : TM_DOMAIN;
$host = str_replace("http://", "", $host);
$host = str_replace("https://", "", $host);
if (!($fp = fsockopen($host, $port))) {
return 0;
}
if (!fputs($fp, $request, strlen($request))) {
return 0;
}
$data = "";
while (!feof($fp)) {
$data .= fread($fp, 256);
}
//win32 limit 2048
fclose($fp);
$http_response = get_http_response($data);
return $http_response;
}
