From 31117fa7c70de9beb8aa39615e780214b251f519 Mon Sep 17 00:00:00 2001 From: Côme Chilliet Date: Tue, 20 Sep 2022 12:46:22 +0200 Subject: Fix tests for nested v4 in v6 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Côme Chilliet --- lib/private/Http/Client/LocalAddressChecker.php | 20 ++++++-------------- 1 file changed, 6 insertions(+), 14 deletions(-) (limited to 'lib/private/Http') diff --git a/lib/private/Http/Client/LocalAddressChecker.php b/lib/private/Http/Client/LocalAddressChecker.php index 274186d0a5a..13a7d062de3 100644 --- a/lib/private/Http/Client/LocalAddressChecker.php +++ b/lib/private/Http/Client/LocalAddressChecker.php @@ -25,6 +25,7 @@ declare(strict_types=1); */ namespace OC\Http\Client; +use IPLib\Address\IPv6; use IPLib\Factory; use IPLib\ParseStringFlag; use OCP\Http\Client\LocalServerException; @@ -48,7 +49,11 @@ class LocalAddressChecker { return; } /* Replace by normalized form */ - $ip = (string)$parsedIp; + if ($parsedIp instanceof IPv6) { + $ip = (string)($parsedIp->toIPv4() ?? $parsedIp); + } else { + $ip = (string)$parsedIp; + } $localRanges = [ '100.64.0.0/10', // See RFC 6598 @@ -63,19 +68,6 @@ class LocalAddressChecker { $this->logger->warning("Host $ip was not connected to because it violates local access rules"); throw new LocalServerException('Host violates local access rules'); } - - // Also check for IPv6 IPv4 nesting, because that's not covered by filter_var - if ((bool)filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6) && substr_count($ip, '.') > 0) { - $delimiter = strrpos($ip, ':'); // Get last colon - $ipv4Address = substr($ip, $delimiter + 1); - - if ( - !filter_var($ipv4Address, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE) || - IpUtils::checkIp($ip, $localRanges)) { - $this->logger->warning("Host $ip was not connected to because it violates local access rules"); - throw new LocalServerException('Host violates local access rules'); - } - } } public function ThrowIfLocalAddress(string $uri) : void { -- cgit v1.2.3