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validate url: feed urlencoded() URL to filter_var() only

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This commit is contained in:
Andrew Dolgov 2020-09-28 19:46:31 +03:00
parent 7c8bed0524
commit c70e26db31
1 changed files with 14 additions and 9 deletions
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23
classes/urlhelper.php
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@ -64,13 +64,6 @@ class UrlHelper {
if (!in_array(strtolower($tokens['scheme']), ['http', 'https'])) if (!in_array(strtolower($tokens['scheme']), ['http', 'https']))
return false; return false;
if ($tokens['path']) {
$tokens['path'] = implode("/",
array_map("rawurlencode",
array_map("rawurldecode",
explode("/", $tokens['path']))));
}
//convert IDNA hostname to punycode if possible //convert IDNA hostname to punycode if possible
if (function_exists("idn_to_ascii")) { if (function_exists("idn_to_ascii")) {
if (mb_detect_encoding($tokens['host']) != 'ASCII') { if (mb_detect_encoding($tokens['host']) != 'ASCII') {
@ -78,9 +71,21 @@ class UrlHelper {
} }
} }
$url = self::build_url($tokens); // separate set of tokens with urlencoded 'path' because filter_var() rightfully fails on non-latin characters
// (used for validation only, we actually request the original URL, in case of urlencode breaking it)
$tokens_filter_var = $tokens;
if (filter_var($url, FILTER_VALIDATE_URL) === false) if ($tokens['path']) {
$tokens_filter_var['path'] = implode("/",
array_map("rawurlencode",
array_map("rawurldecode",
explode("/", $tokens['path']))));
}
$url = self::build_url($tokens);
$url_filter_var = self::build_url($tokens_filter_var);
if (filter_var($url_filter_var, FILTER_VALIDATE_URL) === false)
return false; return false;
if ($extended_filtering) { if ($extended_filtering) {