Add field trial WebRTC-AllowMACBasedIPv6
Bug: webrtc:12268
Change-Id: I6fad191a12aa2834eb2f38b437781cba23785d5e
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/196506
Commit-Queue: Jonas Oreland <jonaso@webrtc.org>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#32782}
diff --git a/rtc_base/network.cc b/rtc_base/network.cc
index 8aabdcb..07c39ae 100644
--- a/rtc_base/network.cc
+++ b/rtc_base/network.cc
@@ -131,7 +131,7 @@
}
#if !defined(__native_client__)
-bool IsIgnoredIPv6(const InterfaceAddress& ip) {
+bool IsIgnoredIPv6(bool allow_mac_based_ipv6, const InterfaceAddress& ip) {
if (ip.family() != AF_INET6) {
return false;
}
@@ -144,7 +144,7 @@
}
// Any MAC based IPv6 should be avoided to prevent the MAC tracking.
- if (IPIsMacBased(ip)) {
+ if (IPIsMacBased(ip) && !allow_mac_based_ipv6) {
return true;
}
@@ -478,11 +478,15 @@
return nullptr;
}
-BasicNetworkManager::BasicNetworkManager() {}
+BasicNetworkManager::BasicNetworkManager()
+ : allow_mac_based_ipv6_(
+ webrtc::field_trial::IsEnabled("WebRTC-AllowMACBasedIPv6")) {}
BasicNetworkManager::BasicNetworkManager(
NetworkMonitorFactory* network_monitor_factory)
- : network_monitor_factory_(network_monitor_factory) {}
+ : network_monitor_factory_(network_monitor_factory),
+ allow_mac_based_ipv6_(
+ webrtc::field_trial::IsEnabled("WebRTC-AllowMACBasedIPv6")) {}
BasicNetworkManager::~BasicNetworkManager() {}
@@ -535,7 +539,7 @@
// Special case for IPv6 address.
if (cursor->ifa_addr->sa_family == AF_INET6) {
- if (IsIgnoredIPv6(ip)) {
+ if (IsIgnoredIPv6(allow_mac_based_ipv6_, ip)) {
continue;
}
scope_id =
@@ -713,7 +717,7 @@
scope_id = v6_addr->sin6_scope_id;
ip = IPAddress(v6_addr->sin6_addr);
- if (IsIgnoredIPv6(InterfaceAddress(ip))) {
+ if (IsIgnoredIPv6(allow_mac_based_ipv6_, InterfaceAddress(ip))) {
continue;
}
diff --git a/rtc_base/network.h b/rtc_base/network.h
index 7103f0f..3107b72 100644
--- a/rtc_base/network.h
+++ b/rtc_base/network.h
@@ -293,6 +293,7 @@
nullptr;
std::unique_ptr<NetworkMonitorInterface> network_monitor_
RTC_GUARDED_BY(thread_);
+ bool allow_mac_based_ipv6_ = false;
};
// Represents a Unix-type network interface, with a name and single address.
diff --git a/rtc_base/network_unittest.cc b/rtc_base/network_unittest.cc
index 13f888e..73ddd81 100644
--- a/rtc_base/network_unittest.cc
+++ b/rtc_base/network_unittest.cc
@@ -33,6 +33,7 @@
#if defined(WEBRTC_WIN)
#include "rtc_base/logging.h" // For RTC_LOG_GLE
#endif
+#include "test/field_trial.h"
using ::testing::Contains;
using ::testing::Not;
@@ -1240,4 +1241,42 @@
}
}
+#if defined(WEBRTC_POSIX)
+TEST_F(NetworkTest, IgnoresMACBasedIPv6Address) {
+ std::string ipv6_address = "2607:fc20:f340:1dc8:214:22ff:fe01:2345";
+ std::string ipv6_mask = "FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF";
+ BasicNetworkManager manager;
+ manager.StartUpdating();
+
+ // IPSec interface; name is in form "ipsec<index>".
+ char if_name[20] = "ipsec11";
+ ifaddrs* addr_list =
+ InstallIpv6Network(if_name, ipv6_address, ipv6_mask, manager);
+
+ BasicNetworkManager::NetworkList list;
+ manager.GetNetworks(&list);
+ EXPECT_EQ(list.size(), 0u);
+ ReleaseIfAddrs(addr_list);
+}
+
+TEST_F(NetworkTest, WebRTC_AllowMACBasedIPv6Address) {
+ webrtc::test::ScopedFieldTrials field_trials(
+ "WebRTC-AllowMACBasedIPv6/Enabled/");
+ std::string ipv6_address = "2607:fc20:f340:1dc8:214:22ff:fe01:2345";
+ std::string ipv6_mask = "FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF";
+ BasicNetworkManager manager;
+ manager.StartUpdating();
+
+ // IPSec interface; name is in form "ipsec<index>".
+ char if_name[20] = "ipsec11";
+ ifaddrs* addr_list =
+ InstallIpv6Network(if_name, ipv6_address, ipv6_mask, manager);
+
+ BasicNetworkManager::NetworkList list;
+ manager.GetNetworks(&list);
+ EXPECT_EQ(list.size(), 1u);
+ ReleaseIfAddrs(addr_list);
+}
+#endif
+
} // namespace rtc