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sanitize: handle picture[@srcset] elements properly, i.e. rewrite relative URLs

This commit is contained in:
Andrew Dolgov 2020-04-29 19:02:44 +03:00
parent 4a00f96733
commit 83c8834421
1 changed files with 17 additions and 1 deletions
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18
include/functions.php
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@ -1264,7 +1264,7 @@
$rewrite_base_url = $site_url ? $site_url : get_self_url_prefix();
$entries = $xpath->query('(//a[@href]|//img[@src]|//video/source[@src]|//audio/source[@src]|//picture/source[@src])');
$entries = $xpath->query('(//a[@href]|//img[@src]|//video/source[@src]|//audio/source[@src]|//picture/source[@src]|//picture/source[@srcset])');
foreach ($entries as $entry) {
@ -1303,6 +1303,22 @@
}
}
if ($entry->hasAttribute('srcset')) {
$tokens = explode(",", $entry->getAttribute('srcset'));
for ($i = 0; $i < count($tokens); $i++) {
$token = trim($tokens[$i]);
list ($url, $width) = explode(" ", $token, 2);
$url = rewrite_relative_url($rewrite_base_url, $url);
$tokens[$i] = "$url $width";
}
$entry->setAttribute("srcset", implode(", ", $tokens));
}
if ($entry->hasAttribute('src') &&
($owner && get_pref("STRIP_IMAGES", $owner)) || $force_remove_images || $_SESSION["bw_limit"]) {