mirror of https://github.com/friendica/friendica
parse_url: complete new code for fetching website information
This commit is contained in:
Michael Vogel
parent
47c48aa438
commit
48f67ead9b
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@ -1,7 +1,163 @@
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<?php
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if(!function_exists('deletenode')) {
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function deletenode(&$doc, $node)
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{
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$xpath = new DomXPath($doc);
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$list = $xpath->query("//".$node);
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foreach ($list as $child)
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$child->parentNode->removeChild($child);
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}
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}
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require_once('library/HTML5/Parser.php');
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require_once('library/HTMLPurifier.auto.php');
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function parseurl_getsiteinfo($url) {
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$siteinfo = array();
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$ch = curl_init();
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curl_setopt($ch, CURLOPT_URL, $url);
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curl_setopt($ch, CURLOPT_HEADER, 1);
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curl_setopt($ch, CURLOPT_NOBODY, 0);
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curl_setopt($ch, CURLOPT_TIMEOUT, 3);
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
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curl_setopt($ch,CURLOPT_USERAGENT,'Opera/9.64(Windows NT 5.1; U; de) Presto/2.1.1');
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$header = curl_exec($ch);
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curl_close($ch);
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if (preg_match('/charset=(.*?)\n/', $header, $matches))
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$charset = trim(array_pop($matches));
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else
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$charset = "utf-8";
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$pos = strpos($header, "\r\n\r\n");
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if ($pos)
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$body = trim(substr($header, $pos));
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else
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$body = $header;
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$body = mb_convert_encoding($body, "UTF-8", $charset);
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$body = mb_convert_encoding($body, 'HTML-ENTITIES', "UTF-8");
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$doc = new DOMDocument();
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@$doc->loadHTML($body);
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deletenode($doc, 'style');
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deletenode($doc, 'script');
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deletenode($doc, 'option');
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deletenode($doc, 'h1');
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deletenode($doc, 'h2');
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deletenode($doc, 'h3');
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deletenode($doc, 'h4');
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deletenode($doc, 'h5');
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deletenode($doc, 'h6');
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deletenode($doc, 'ol');
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deletenode($doc, 'ul');
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$xpath = new DomXPath($doc);
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$list = $xpath->query("head/title");
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foreach ($list as $node)
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$siteinfo["title"] = html_entity_decode($node->nodeValue, ENT_QUOTES, "UTF-8");
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$list = $xpath->query("head/meta[@name]");
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foreach ($list as $node) {
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$attr = array();
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if ($node->attributes->length)
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foreach ($node->attributes as $attribute)
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$attr[$attribute->name] = $attribute->value;
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$attr["content"] = html_entity_decode($attr["content"], ENT_QUOTES, "UTF-8");
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switch (strtolower($attr["name"])) {
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case "fulltitle":
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$siteinfo["title"] = $attr["content"];
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break;
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case "description":
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$siteinfo["text"] = $attr["content"];
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break;
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case "dc.title":
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$siteinfo["title"] = $attr["content"];
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break;
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case "dc.description":
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$siteinfo["text"] = $attr["content"];
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break;
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}
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}
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$list = $xpath->query("head/meta[@property]");
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foreach ($list as $node) {
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$attr = array();
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if ($node->attributes->length)
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foreach ($node->attributes as $attribute)
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$attr[$attribute->name] = $attribute->value;
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$attr["content"] = html_entity_decode($attr["content"], ENT_QUOTES, "UTF-8");
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switch (strtolower($attr["property"])) {
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case "og:image":
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$siteinfo["image"] = $attr["content"];
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break;
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case "og:title":
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$siteinfo["title"] = $attr["content"];
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break;
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case "og:description":
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$siteinfo["text"] = $attr["content"];
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break;
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}
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}
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if ($siteinfo["image"] == "") {
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require_once('include/Photo.php');
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$list = $xpath->query("//img[@src]");
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foreach ($list as $node) {
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$attr = array();
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if ($node->attributes->length)
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foreach ($node->attributes as $attribute)
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$attr[$attribute->name] = $attribute->value;
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// guess mimetype from headers or filename
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$type = guess_image_type($attr["src"],true);
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$i = fetch_url($attr["src"]);
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$ph = new Photo($i, $type);
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if(($ph->getWidth() > 200) and ($ph->getHeight() > 200))
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$siteinfo["image"] = $attr["src"];
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}
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}
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if ($siteinfo["text"] == "") {
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$text = "";
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$list = $xpath->query("//div[@class='article']");
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foreach ($list as $node)
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$text .= " ".trim($node->nodeValue);
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if ($text == "") {
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$list = $xpath->query("//div[@class='content']");
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foreach ($list as $node)
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$text .= " ".trim($node->nodeValue);
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}
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// If none text was found then take the paragraph content
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if ($text == "") {
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$list = $xpath->query("//p");
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foreach ($list as $node)
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$text .= " ".trim($node->nodeValue);
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}
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if ($text != "") {
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$text = trim(str_replace(array("\n", "\r"), array(" ", " "), $text));
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while (strpos($text, " "))
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$text = trim(str_replace(" ", " ", $text));
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$siteinfo["text"] = html_entity_decode(substr($text,0,350), ENT_QUOTES, "UTF-8").'...';
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}
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}
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return($siteinfo);
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}
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function arr_add_hashes(&$item,$k) {
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$item = '#' . $item;
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@ -40,13 +196,11 @@ function parse_url_content(&$a) {
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logger('parse_url: ' . $url);
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if($textmode)
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$template = $br . '[bookmark=%s]%s[/bookmark]%s' . $br;
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else
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$template = "<br /><a class=\"bookmark\" href=\"%s\" >%s</a>%s<br />";
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$arr = array('url' => $url, 'text' => '');
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call_hooks('parse_link', $arr);
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@ -60,187 +214,53 @@ function parse_url_content(&$a) {
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if($url && $title && $text) {
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if($textmode)
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$text = $br . $br . '[quote]' . $text . '[/quote]' . $br;
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$text = $br . $br . '[quote]' . trim($text) . '[/quote]' . $br;
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else
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$text = '<br /><br /><blockquote>' . $text . '</blockquote><br />';
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$text = '<br /><br /><blockquote>' . trim($text) . '</blockquote><br />';
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$title = str_replace(array("\r","\n"),array('',''),$title);
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$result = sprintf($template,$url,($title) ? $title : $url,$text) . $str_tags;
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logger('parse_url (unparsed): returns: ' . $result);
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logger('parse_url (unparsed): returns: ' . $result);
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echo $result;
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killme();
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}
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$siteinfo = parseurl_getsiteinfo($url);
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if($url) {
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$s = fetch_url($url);
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if($siteinfo["title"] == "") {
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echo sprintf($template,$url,$url,'') . $str_tags;
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killme();
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} else {
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echo '';
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killme();
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$image = $siteinfo["image"];
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$text = $siteinfo["text"];
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$title = $siteinfo["title"];
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}
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// logger('parse_url: data: ' . $s, LOGGER_DATA);
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if ($image != "") {
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$i = fetch_url($image);
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if($i) {
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require_once('include/Photo.php');
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// guess mimetype from headers or filename
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$type = guess_image_type($image,true);
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if(! $s) {
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echo sprintf($template,$url,$url,'') . $str_tags;
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killme();
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}
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$matches = '';
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$c = preg_match('/\<head(.*?)\>(.*?)\<\/head\>/ism',$s,$matches);
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if($c) {
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// logger('parse_url: header: ' . $matches[2], LOGGER_DATA);
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try {
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$domhead = HTML5_Parser::parse($matches[2]);
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} catch (DOMException $e) {
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logger('scrape_dfrn: parse error: ' . $e);
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}
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if($domhead)
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logger('parsed header');
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}
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if(! $title) {
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if(strpos($s,'<title>')) {
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$title = substr($s,strpos($s,'<title>')+7,64);
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if(strpos($title,'<') !== false)
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$title = strip_tags(substr($title,0,strpos($title,'<')));
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}
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}
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$config = HTMLPurifier_Config::createDefault();
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$config->set('Cache.DefinitionImpl', null);
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$purifier = new HTMLPurifier($config);
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$s = $purifier->purify($s);
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// logger('purify_output: ' . $s);
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try {
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$dom = HTML5_Parser::parse($s);
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} catch (DOMException $e) {
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logger('scrape_dfrn: parse error: ' . $e);
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}
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if(! $dom) {
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echo sprintf($template,$url,$url,'') . $str_tags;
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killme();
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}
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$items = $dom->getElementsByTagName('title');
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if($items) {
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foreach($items as $item) {
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$title = trim($item->textContent);
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break;
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}
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}
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if(! $text) {
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$divs = $dom->getElementsByTagName('div');
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if($divs) {
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foreach($divs as $div) {
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$class = $div->getAttribute('class');
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if($class && (stristr($class,'article') || stristr($class,'content'))) {
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$items = $div->getElementsByTagName('p');
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if($items) {
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foreach($items as $item) {
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$text = $item->textContent;
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if(stristr($text,'<script')) {
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$text = '';
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continue;
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}
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$text = strip_tags($text);
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if(strlen($text) < 100) {
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$text = '';
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continue;
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}
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$text = substr($text,0,250) . '...' ;
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break;
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}
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}
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}
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if($text)
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break;
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}
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}
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if(! $text) {
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$items = $dom->getElementsByTagName('p');
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if($items) {
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foreach($items as $item) {
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$text = $item->textContent;
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if(stristr($text,'<script'))
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continue;
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$text = strip_tags($text);
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if(strlen($text) < 100) {
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$text = '';
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continue;
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}
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$text = substr($text,0,250) . '...' ;
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break;
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}
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}
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}
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}
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if(! $text) {
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logger('parsing meta');
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$items = (isset($domhead) && is_object($domhead) ? $domhead->getElementsByTagName('meta') : null);
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if($items) {
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foreach($items as $item) {
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$property = $item->getAttribute('property');
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if($property && (stristr($property,':description'))) {
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$text = $item->getAttribute('content');
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if(stristr($text,'<script')) {
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$text = '';
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continue;
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}
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$text = strip_tags($text);
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$text = substr($text,0,250) . '...' ;
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}
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if($property && (stristr($property,':image'))) {
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$image = $item->getAttribute('content');
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if(stristr($text,'<script')) {
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$image = '';
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continue;
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}
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$image = strip_tags($image);
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$i = fetch_url($image);
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if($i) {
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require_once('include/Photo.php');
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// guess mimetype from headers or filename
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$type = guess_image_type($image,true);
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$ph = new Photo($i, $type);
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if($ph->is_valid()) {
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if($ph->getWidth() > 300 || $ph->getHeight() > 300) {
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$ph->scaleImage(300);
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$new_width = $ph->getWidth();
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$new_height = $ph->getHeight();
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if($textmode)
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$image = $br . $br . '[img=' . $new_width . 'x' . $new_height . ']' . $image . '[/img]';
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else
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$image = '<br /><br /><img height="' . $new_height . '" width="' . $new_width . '" src="' .$image . '" alt="photo" />';
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}
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else {
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if($textmode)
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$image = $br . $br . '[img]' . $image . '[/img]';
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else
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$image = '<br /><br /><img src="' . $image . '" alt="photo" />';
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}
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}
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else
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$image = '';
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}
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$ph = new Photo($i, $type);
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if($ph->is_valid()) {
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if($ph->getWidth() > 300 || $ph->getHeight() > 300) {
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$ph->scaleImage(300);
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$new_width = $ph->getWidth();
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$new_height = $ph->getHeight();
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if($textmode)
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$image = $br . $br . '[img=' . $new_width . 'x' . $new_height . ']' . $image . '[/img]';
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else
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$image = '<br /><br /><img height="' . $new_height . '" width="' . $new_width . '" src="' .$image . '" alt="photo" />';
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} else {
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if($textmode)
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$image = $br.$br.'[img]'.$image.'[/img]';
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else
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$image = '<br /><br /><img src="'.$image.'" alt="photo" />';
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}
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}
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}
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@ -248,19 +268,19 @@ function parse_url_content(&$a) {
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if(strlen($text)) {
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if($textmode)
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$text = $br .$br . '[quote]' . $text . '[/quote]' . $br ;
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$text = $br.$br.'[quote]'.trim($text).'[/quote]'.$br ;
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else
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$text = '<br /><br /><blockquote>' . $text . '</blockquote><br />';
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$text = '<br /><br /><blockquote>'.trim($text).'</blockquote><br />';
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}
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if($image) {
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$text = $image . $br . $text;
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$text = $image.$br.$text;
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}
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$title = str_replace(array("\r","\n"),array('',''),$title);
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$result = sprintf($template,$url,($title) ? $title : $url,$text) . $str_tags;
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logger('parse_url: returns: ' . $result);
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logger('parse_url: returns: ' . $result);
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echo $result;
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killme();
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