Extend DnsTlsServer to return IP string (4499ee36) · Commits · e / os / android_packages_modules_DnsResolver

DnsTlsServer.cpp

+6 −0

Original line number	Diff line number	Diff line
		@@ -18,6 +18,8 @@

		#include <algorithm>

		#include <netdutils/InternetAddresses.h>

		namespace {

		// Returns a tuple of references to the elements of a.
		@@ -124,5 +126,9 @@ bool DnsTlsServer::wasExplicitlyConfigured() const {
		return !name.empty();
		}

		std::string DnsTlsServer::toIpString() const {
		return netdutils::IPSockAddr::toIPSockAddr(ss).ip().toString();
		}

		} // namespace net
		} // namespace android

DnsTlsServer.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -69,6 +69,7 @@ struct DnsTlsServer {
		bool operator==(const DnsTlsServer& other) const;

		bool wasExplicitlyConfigured() const;
		std::string toIpString() const;

		Validation validationState() const { return mValidation; }
		void setValidationState(Validation val) { mValidation = val; }

PrivateDnsConfiguration.cpp

+7 −16

Original line number	Diff line number	Diff line
		@@ -20,7 +20,6 @@

		#include <android-base/logging.h>
		#include <android-base/stringprintf.h>
		#include <netdb.h>
		#include <netdutils/ThreadUtil.h>
		#include <sys/socket.h>

		@@ -37,13 +36,6 @@ using std::chrono::milliseconds;
		namespace android {
		namespace net {

		std::string addrToString(const sockaddr_storage* addr) {
		char out[INET6_ADDRSTRLEN] = {0};
		getnameinfo((const sockaddr*) addr, sizeof(sockaddr_storage), out, INET6_ADDRSTRLEN, nullptr, 0,
		NI_NUMERICHOST);
		return std::string(out);
		}

		bool parseServer(const char* server, sockaddr_storage* parsed) {
		addrinfo hints = {
		.ai_flags = AI_NUMERICHOST \| AI_NUMERICSERV,
		@@ -178,7 +170,7 @@ void PrivateDnsConfiguration::startValidation(const DnsTlsServer& server, unsign
		LOG(WARNING) << "Validating DnsTlsServer on netId " << netId;
		const bool success = DnsTlsTransport::validate(server, netId, mark);
		LOG(DEBUG) << "validateDnsTlsServer returned " << success << " for "
		<< addrToString(&server.ss);
		<< server.toIpString();

		const bool needs_reeval = this->recordPrivateDnsValidation(server, netId, success);
		if (!needs_reeval) {
		@@ -225,20 +217,19 @@ bool PrivateDnsConfiguration::recordPrivateDnsValidation(const DnsTlsServer& ser
		auto& tracker = netPair->second;
		auto serverPair = tracker.find(identity);
		if (serverPair == tracker.end()) {
		LOG(WARNING) << "Server " << addrToString(&server.ss)
		LOG(WARNING) << "Server " << server.toIpString()
		<< " was removed during private DNS validation";
		success = false;
		reevaluationStatus = DONT_REEVALUATE;
		} else if (!(serverPair->second == server)) {
		// TODO: It doesn't seem correct to overwrite the tracker entry for
		// \|server\| down below in this circumstance... Fix this.
		LOG(WARNING) << "Server " << addrToString(&server.ss)
		LOG(WARNING) << "Server " << server.toIpString()
		<< " was changed during private DNS validation";
		success = false;
		reevaluationStatus = DONT_REEVALUATE;
		} else if (!serverPair->second.active()) {
		LOG(WARNING) << "Server " << addrToString(&server.ss)
		<< " was removed from the configuration";
		LOG(WARNING) << "Server " << server.toIpString() << " was removed from the configuration";
		success = false;
		reevaluationStatus = DONT_REEVALUATE;
		}
		@@ -247,11 +238,11 @@ bool PrivateDnsConfiguration::recordPrivateDnsValidation(const DnsTlsServer& ser
		const auto& listeners = ResolverEventReporter::getInstance().getListeners();
		if (listeners.size() != 0) {
		for (const auto& it : listeners) {
		it->onPrivateDnsValidationEvent(netId, addrToString(&server.ss), server.name, success);
		it->onPrivateDnsValidationEvent(netId, server.toIpString(), server.name, success);
		}
		LOG(DEBUG) << "Sent validation " << (success ? "success" : "failure") << " event on netId "
		<< netId << " for " << addrToString(&server.ss) << " with hostname {"
		<< server.name << "}";
		<< netId << " for " << server.toIpString() << " with hostname {" << server.name
		<< "}";
		} else {
		LOG(ERROR)
		<< "Validation event not sent since no INetdEventListener receiver is available.";

ResolverController.cpp

+5 −14

Original line number	Diff line number	Diff line
		@@ -22,8 +22,6 @@
		#include <string>
		#include <vector>

		#include <netdb.h>

		#include <aidl/android/net/IDnsResolver.h>
		#include <android-base/logging.h>
		#include <android-base/strings.h>
		@@ -46,13 +44,6 @@ namespace net {

		namespace {

		std::string addrToString(const sockaddr_storage* addr) {
		char out[INET6_ADDRSTRLEN] = {0};
		getnameinfo((const sockaddr*)addr, sizeof(sockaddr_storage), out, INET6_ADDRSTRLEN, nullptr, 0,
		NI_NUMERICHOST);
		return std::string(out);
		}

		const char* getPrivateDnsModeString(PrivateDnsMode mode) {
		switch (mode) {
		case PrivateDnsMode::OFF:
		@@ -265,8 +256,8 @@ int ResolverController::getResolverInfo(int32_t netId, std::vector<std::string>*
		ResolverStats::encodeAll(res_stats, stats);

		const auto privateDnsStatus = PrivateDnsConfiguration::getInstance().getStatus(netId);
		for (const auto& pair : privateDnsStatus.serversMap) {
		tlsServers->push_back(addrToString(&pair.first.ss));
		for (const auto& [server, _] : privateDnsStatus.serversMap) {
		tlsServers->push_back(server.toIpString());
		}

		params->resize(IDnsResolver::RESOLVER_PARAMS_COUNT);
		@@ -365,9 +356,9 @@ void ResolverController::dump(DumpWriter& dw, unsigned netId) {
		dw.println("Private DNS configuration (%u entries)",
		static_cast<uint32_t>(privateDnsStatus.serversMap.size()));
		dw.incIndent();
		for (const auto& pair : privateDnsStatus.serversMap) {
		dw.println("%s name{%s} status{%s}", addrToString(&pair.first.ss).c_str(),
		pair.first.name.c_str(), validationStatusToString(pair.second));
		for (const auto& [server, validation] : privateDnsStatus.serversMap) {
		dw.println("%s name{%s} status{%s}", server.toIpString().c_str(),
		server.name.c_str(), validationStatusToString(validation));
		}
		dw.decIndent();
		}

resolv_cache_unit_test.cpp

+2 −3

Original line number	Diff line number	Diff line
		@@ -32,15 +32,14 @@

		#include "res_init.h"
		#include "resolv_cache.h"
		#include "resolv_private.h"
		#include "stats.h"
		#include "tests/dns_responder/dns_responder.h"
		#include "tests/resolv_test_utils.h"

		using namespace std::chrono_literals;

		using android::netdutils::IPSockAddr;

		constexpr int TEST_NETID = 30;
		constexpr int TEST_NETID_2 = 31;
		constexpr int DNS_PORT = 53;

		@@ -227,7 +226,7 @@ class ResolvCacheTest : public ::testing::Test {
		// Server checking.
		EXPECT_EQ(nscount, static_cast<int>(expected.setup.servers.size())) << msg;
		for (int i = 0; i < nscount; i++) {
		EXPECT_EQ(addrToString(&servers[i]), expected.setup.servers[i]) << msg;
		EXPECT_EQ(ToString(&servers[i]), expected.setup.servers[i]) << msg;
		}

		// Domain checking