Replace deprecated use of "self" in callables

[friendica.git] / src / Content / Text / HTML.php

diff --git a/src/Content/Text/HTML.php b/src/Content/Text/HTML.php
index 93afeac4d056b9d0db38d7218f4d0973b51df846..f9f340135cf51cf22cab2bf62c941166305b2f4c 100644 (file)
--- a/src/Content/Text/HTML.php
+++ b/src/Content/Text/HTML.php
@@ -1,6 +1,6 @@
 <?php
 /**
- * @copyright Copyright (C) 2010-2022, the Friendica project
+ * @copyright Copyright (C) 2010-2023, the Friendica project
  *
  * @license GNU AGPL version 3 or any later version
  *
@@ -23,6 +23,7 @@ namespace Friendica\Content\Text;
 
 use DOMDocument;
 use DOMXPath;
+use Friendica\Protocol\HTTP\MediaType;
 use Friendica\Content\Widget\ContactBlock;
 use Friendica\Core\Hook;
 use Friendica\Core\Renderer;
@@ -33,6 +34,7 @@ use Friendica\Util\Network;
 use Friendica\Util\Strings;
 use Friendica\Util\XML;
 use League\HTMLToMarkdown\HtmlConverter;
+use Psr\Http\Message\UriInterface;
 
 class HTML
 {
@@ -736,22 +738,22 @@ class HTML
                        '[youtube]$2[/youtube]',
                        $s
                );
-       
+
                $s = preg_replace(
                        '#<iframe[^>](.*?)https?://www.youtube.com/embed/([A-Za-z0-9\-_=]+)(.*?)</iframe>#ism',
                        '[youtube]$2[/youtube]',
                        $s
                );
-       
+
                $s = preg_replace(
                        '#<iframe[^>](.*?)https?://player.vimeo.com/video/([0-9]+)(.*?)</iframe>#ism',
                        '[vimeo]$2[/vimeo]',
                        $s
                );
-       
+
                return $s;
        }
-       
+
        /**
         * transform link href and img src from relative to absolute
         *
@@ -764,30 +766,30 @@ class HTML
                if (empty($base)) {
                        return $text;
                }
-       
+
                $base = rtrim($base, '/');
-       
+
                $base2 = $base . "/";
-       
+
                // Replace links
                $pattern = "/<a([^>]*) href=\"(?!http|https|\/)([^\"]*)\"/";
                $replace = "<a\${1} href=\"" . $base2 . "\${2}\"";
                $text = preg_replace($pattern, $replace, $text);
-       
+
                $pattern = "/<a([^>]*) href=\"(?!http|https)([^\"]*)\"/";
                $replace = "<a\${1} href=\"" . $base . "\${2}\"";
                $text = preg_replace($pattern, $replace, $text);
-       
+
                // Replace images
                $pattern = "/<img([^>]*) src=\"(?!http|https|\/)([^\"]*)\"/";
                $replace = "<img\${1} src=\"" . $base2 . "\${2}\"";
                $text = preg_replace($pattern, $replace, $text);
-       
+
                $pattern = "/<img([^>]*) src=\"(?!http|https)([^\"]*)\"/";
                $replace = "<img\${1} src=\"" . $base . "\${2}\"";
                $text = preg_replace($pattern, $replace, $text);
-       
-       
+
+
                // Done
                return $text;
        }
@@ -840,7 +842,7 @@ class HTML
 
                if ($redirect) {
                        $url = Contact::magicLinkByContact($contact);
-                       if (strpos($url, 'redir/') === 0) {
+                       if (strpos($url, 'contact/redir/') === 0) {
                                $sparkle = ' sparkle';
                        }
                }
@@ -907,19 +909,6 @@ class HTML
                return Renderer::replaceMacros(Renderer::getMarkupTemplate('searchbox.tpl'), $values);
        }
 
-       /**
-        * Replace naked text hyperlink with HTML formatted hyperlink
-        *
-        * @param string $s
-        * @return string
-        */
-       public static function toLink(string $s): string
-       {
-               $s = preg_replace("/(https?\:\/\/[a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\'\%\$\!\+]*)/", ' <a href="$1" target="_blank" rel="noopener noreferrer">$1</a>', $s);
-               $s = preg_replace("/\<(.*?)(src|href)=(.*?)\&amp\;(.*?)\>/ism", '<$1$2=$3&$4>', $s);
-               return $s;
-       }
-
        /**
         * Given a HTML text and a set of filtering reasons, adds a content hiding header with the provided reasons
         *
@@ -1020,4 +1009,77 @@ class HTML
 
                return $text;
        }
+
+       /**
+        * XPath arbitrary string quoting
+        *
+        * @see https://stackoverflow.com/a/45228168
+        * @param string $value
+        * @return string
+        */
+       public static function xpathQuote(string $value): string
+       {
+               if (false === strpos($value, '"')) {
+                       return '"' . $value . '"';
+               }
+
+               if (false === strpos($value, "'")) {
+                       return "'" . $value . "'";
+               }
+
+               // if the value contains both single and double quotes, construct an
+               // expression that concatenates all non-double-quote substrings with
+               // the quotes, e.g.:
+               //
+               //    concat("'foo'", '"', "bar")
+               return 'concat(' . implode(', \'"\', ', array_map([self::class, 'xpathQuote'], explode('"', $value))) . ')';
+       }
+
+       /**
+        * Checks if the provided URL is present in the DOM document in an element with the rel="me" attribute
+        *
+        * XHTML Friends Network http://gmpg.org/xfn/
+        *
+        * @param DOMDocument  $doc
+        * @param UriInterface $meUrl
+        * @return bool
+        */
+       public static function checkRelMeLink(DOMDocument $doc, UriInterface $meUrl): bool
+       {
+               $xpath = new \DOMXpath($doc);
+
+               // This expression checks that "me" is among the space-delimited values of the "rel" attribute.
+               // And that the href attribute contains exactly the provided URL
+               $expression = "//*[contains(concat(' ', normalize-space(@rel), ' '), ' me ')][@href = " . self::xpathQuote($meUrl) . "]";
+
+               $result = $xpath->query($expression);
+
+               return $result !== false && $result->length > 0;
+       }
+
+       /**
+        * @param DOMDocument $doc
+        * @return string|null Lowercase charset
+        */
+       public static function extractCharset(DOMDocument $doc): ?string
+       {
+               $xpath = new DOMXPath($doc);
+
+               $expression = "string(//meta[@charset]/@charset)";
+               if ($charset = $xpath->evaluate($expression)) {
+                       return strtolower($charset);
+               }
+
+               try {
+                       // This expression looks for a meta tag with the http-equiv attribute set to "content-type" ignoring case
+                       // whose content attribute contains a "charset" string and returns its value
+                       $expression = "string(//meta[@http-equiv][translate(@http-equiv, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz') = 'content-type'][contains(translate(@content, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz'), 'charset')]/@content)";
+                       $mediaType = MediaType::fromContentType($xpath->evaluate($expression));
+                       if (isset($mediaType->parameters['charset'])) {
+                               return strtolower($mediaType->parameters['charset']);
+                       }
+               } catch(\InvalidArgumentException $e) {}
+
+               return null;
+       }
 }