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Reject stun urls with query parameters

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for consistency with Chromium behavior, in particular
  stun:host?transport=udp
gets rejected.

BUG=chromium:1385735

Change-Id: I85a141ecf72480bfa09d8354d6dcaef8ca0cdcff
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/299943
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Reviewed-by: Guido Urdaneta <guidou@webrtc.org>
Commit-Queue: Philipp Hancke <phancke@microsoft.com>
Cr-Commit-Position: refs/heads/main@{#39916}
This commit is contained in:
Philipp Hancke 2023-04-03 12:48:05 +02:00 committed by WebRTC LUCI CQ
parent 7aa6a72dc6
commit ff6cd53303
2 changed files with 11 additions and 0 deletions
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9
pc/ice_server_parsing.cc
View file

@ -220,6 +220,15 @@ RTCError ParseIceServerUrl(
// GetServiceTypeAndHostnameFromUri should never give an empty hoststring
RTC_DCHECK(!hoststring.empty());
// stun with ?transport (or any ?) is not valid.
if ((service_type == ServiceType::STUN ||
service_type == ServiceType::STUNS) &&
tokens.size() > 1) {
LOG_AND_RETURN_ERROR(
RTCErrorType::SYNTAX_ERROR,
"ICE server parsing failed: Invalid stun url with query parameters");
}
int default_port = kDefaultStunPort;
if (service_type == ServiceType::TURNS) {
default_port = kDefaultStunTlsPort;

2
pc/ice_server_parsing_unittest.cc
View file

@ -188,6 +188,8 @@ TEST_F(IceServerParsingTest, ParseHostnameAndPort) {
EXPECT_FALSE(ParseUrl("stun:/hostname")); // / is not allowed
EXPECT_FALSE(ParseUrl("stun:?hostname")); // ? is not allowed
EXPECT_FALSE(ParseUrl("stun:#hostname")); // # is not allowed
// STUN explicitly forbids query parameters.
EXPECT_FALSE(ParseUrl("stun:hostname?transport=udp"));
}
// Test parsing the "?transport=xxx" part of the URL.