jonas/online-bookmarks
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initial version

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This commit is contained in:
Stefan Frech
2008-04-20 13:26:26 +00:00
committed by Jonas Kattendick
parent 1a36b5e190
commit dc8236ccb0
29 changed files with 3724 additions and 0 deletions
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favicon.php Normal file
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<?php
if (basename ($_SERVER['SCRIPT_NAME']) == basename (__FILE__)) {
die ("no direct access allowed");
}
class favicon {
function favicon ($url) {
global $settings;
if ($settings['show_bookmark_icon']) {
if ($this->parsed_url = $this->return_parse_url ($url)) {
if ($this->favicon_url = $this->get_favicon_url ()) {
$this->icon_name = rand () . basename ($this->favicon_url);
if ($this->get_favicon_image ()) {
$this->convert_favicon ();
}
}
}
}
}
###
### check the image type and convert & resize it if required
### returns the absolute path of the (converted) .png file
###
function convert_favicon () {
global $convert, $identify;
$tmp_file = "./favicons/" . $this->icon_name;
# find out file type
if (@exec ("$identify $tmp_file", $output)) {
$ident = explode (" ", $output[0]);
if (count ($output) > 1) {
$file_to_convert = $ident[0];
}
else {
$file_to_convert = $tmp_file;
}
# convert image in any case to 16x16 and .png
system ("$convert $file_to_convert -resize 16x16 $tmp_file.png");
$this->favicon = $tmp_file . ".png";
@unlink ($tmp_file);
return true;
}
else {
@unlink ($tmp_file);
return false;
}
}
###
### download and save favicon
###
function get_favicon_image () {
//Selbstgebastelte, IIS-kompatible Version von Arne Haak (www.arnehaak.de)
# HTTP-Url auswerten
$httpparsed = $this->return_parse_url ($this->favicon_url);
//HTTP-Request-Header erzeugen
$httprequest = "GET ".$httpparsed['path']." HTTP/1.0\r\n".
"Accept: */*\r\n".
"Accept-Language: en\r\n".
"Accept-Encoding: identity\r\n".
"User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)\r\n".
"Host: ".$httpparsed['host']."\r\n".
"Connection: close\r\n\r\n";
//Verbindung aufbauen und Request abschicken
if ($httphandle = fsockopen($httpparsed['host'],$httpparsed['port'])) {
fputs($httphandle, $httprequest);
//Daten runterladen solange vorhanden
$answerdata = null;
do {
$answerdata .= fread($httphandle, 1024);
} while (feof($httphandle) != true);
// Verbindung schliessen
fclose ($httphandle);
//Header finden und abtrennen
$finalposi = strpos($answerdata, "\r\n\r\n") + 4; //Position des ersten Bytes nach dem Header bestimmen
$finalfile = substr($answerdata, $finalposi, strlen($answerdata) - $finalposi); //Header abschneiden
//Datei abspeichern
if ($fp = @fopen("./favicons/" . $this->icon_name, "w")) {
fwrite($fp, $finalfile);
fclose($fp);
return true;
}
else {
return false;
}
}
else {
return false;
}
}
###
### checks for the existence of a favicon on a remote server
### and returns the url if one exist
###
function get_favicon_url () {
global $timeout;
# search for favicon in document root first
if ($socket = @fsockopen ($this->parsed_url['host'], $this->parsed_url['port'], $errno, $errstr, $timeout)) {
fwrite ($socket, "HEAD /favicon.ico HTTP/1.0\r\nHost: " . $this->parsed_url['host'] . "\r\n\r\n");
$http_response = fgets ($socket, 22);
fclose ($socket);
if (ereg ("200 OK", $http_response)) {
#echo "favicon found in document root\n";
return $this->parsed_url['scheme'] . "://" . $this->parsed_url['host'] . ":" . $this->parsed_url['port'] . "/favicon.ico";
}
else {
# if favicon was not found in document root, search in html header for it
if ($socket = @fsockopen ($this->parsed_url['host'], $this->parsed_url['port'], $errno, $errstr, $timeout)) {
fwrite ($socket, "GET " . $this->parsed_url['path'] . " HTTP/1.0\r\nHost: " . $this->parsed_url['host'] . "\r\n\r\n");
while (!feof ($socket)) {
$html = fgets ($socket, 1024);
if ($html == null) {
return false;
}
# we only want to search in HTML documents
if (preg_match ('/.*Content-Type:.*/si', $html, $contenttype)) {
if ( ! preg_match ('/text\/html/si', $contenttype[0])) {
return false;
}
}
if (preg_match ('/<link[^>]+rel="(?:shortcut )?icon".*>/si', $html, $tag)) {
#echo "found favicon in html header\n";
if (preg_match ('/<link[^>]+href="([^"]+)".*>/si', $tag[0], $location)) {
# the favicon location is an url
if (substr($location[1], 0, 7) == 'http://') {
$favicon = $location[1];
}
# the favicon location is an absolute path
else if (substr ($location[1], 0, 1) == '/') {
$favicon = $this->parsed_url['scheme'] . '://' . $this->parsed_url['host'] . ":" . $this->parsed_url['port'] . $location[1];
}
# else the path can only be something useless
# or a relative path, looking like this.
# ./path/to/favicon.ico
# path/to/favicon.ico
else {
# The location we called is either a file or a directory.
# We have to guess. We assume it is a directory if there is a trailing slash
if (substr ($this->parsed_url['path'], strlen($this->parsed_url['path'])-1) == "/") {
$favicon = $this->parsed_url['scheme'] . '://' . $this->parsed_url['host'] . ":" . $this->parsed_url['port'] . $this->parsed_url['path'] . $location[1];
}
else {
$favicon = $this->parsed_url['scheme'] . '://' . $this->parsed_url['host'] . ":" . $this->parsed_url['port'] . dirname ($this->parsed_url['path']) . '/' . $location[1];
}
}
return $favicon;
}
}
else if (preg_match ('/.*<\/head.*>/si', $html)) {
#echo "html header end found, giving up\n";
return false;
}
}
fclose ($socket);
}
}
}
return false;
}
###
### returns an array with parts of the given url
###
function return_parse_url ($url) {
if ($parsed = @parse_url ($url)) {
if (!isset ($parsed['scheme']) || $parsed['scheme'] == "") {
$parsed['scheme'] = "http";
}
else if ($parsed['scheme'] != "http") {
return false;
}
if (!isset ($parsed['host']) || $parsed['host'] == "") {
return false;
}
if (!isset ($parsed['port']) || $parsed['port'] == "") {
$parsed['port'] = 80;
}
if (!isset ($parsed['path']) || $parsed['path'] == "") {
$parsed['path'] = "/";
}
return ($parsed);
}
else {
return false;
}
}
}
?>