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Diffstat (limited to '')
| -rw-r--r-- | security/manager/ssl/nsNSSCallbacks.cpp | 1382 |
1 files changed, 1382 insertions, 0 deletions
diff --git a/security/manager/ssl/nsNSSCallbacks.cpp b/security/manager/ssl/nsNSSCallbacks.cpp new file mode 100644 index 0000000000..54e290aa91 --- /dev/null +++ b/security/manager/ssl/nsNSSCallbacks.cpp @@ -0,0 +1,1382 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "nsNSSCallbacks.h" + +#include "PSMRunnable.h" +#include "ScopedNSSTypes.h" +#include "SharedCertVerifier.h" +#include "SharedSSLState.h" +#include "mozilla/ArrayUtils.h" +#include "mozilla/Assertions.h" +#include "mozilla/Casting.h" +#include "mozilla/RefPtr.h" +#include "mozilla/Span.h" +#include "mozilla/Telemetry.h" +#include "mozilla/Unused.h" +#include "nsContentUtils.h" +#include "nsIChannel.h" +#include "nsIHttpChannel.h" +#include "nsIHttpChannelInternal.h" +#include "nsIPrompt.h" +#include "nsIProtocolProxyService.h" +#include "nsISupportsPriority.h" +#include "nsIStreamLoader.h" +#include "nsITokenDialogs.h" +#include "nsIUploadChannel.h" +#include "nsIWebProgressListener.h" +#include "nsNSSCertHelper.h" +#include "nsNSSCertificate.h" +#include "nsNSSComponent.h" +#include "nsNSSHelper.h" +#include "nsNSSIOLayer.h" +#include "nsNetUtil.h" +#include "nsProtectedAuthThread.h" +#include "nsProxyRelease.h" +#include "nsStringStream.h" +#include "mozpkix/pkixtypes.h" +#include "ssl.h" +#include "sslproto.h" +#include "SSLTokensCache.h" + +#include "TrustOverrideUtils.h" +#include "TrustOverride-SymantecData.inc" +#include "TrustOverride-AppleGoogleDigiCertData.inc" +#include "TrustOverride-TestImminentDistrustData.inc" + +using namespace mozilla; +using namespace mozilla::pkix; +using namespace mozilla::psm; + +extern LazyLogModule gPIPNSSLog; + +static void AccumulateCipherSuite(Telemetry::HistogramID probe, + const SSLChannelInfo& channelInfo); + +namespace { + +// Bits in bit mask for SSL_REASONS_FOR_NOT_FALSE_STARTING telemetry probe +// These bits are numbered so that the least subtle issues have higher values. +// This should make it easier for us to interpret the results. +const uint32_t POSSIBLE_VERSION_DOWNGRADE = 4; +const uint32_t POSSIBLE_CIPHER_SUITE_DOWNGRADE = 2; +const uint32_t KEA_NOT_SUPPORTED = 1; + +} // namespace + +class OCSPRequest final : public nsIStreamLoaderObserver, public nsIRunnable { + public: + OCSPRequest(const nsACString& aiaLocation, + const OriginAttributes& originAttributes, + const uint8_t (&ocspRequest)[OCSP_REQUEST_MAX_LENGTH], + size_t ocspRequestLength, TimeDuration timeout); + + NS_DECL_THREADSAFE_ISUPPORTS + NS_DECL_NSISTREAMLOADEROBSERVER + NS_DECL_NSIRUNNABLE + + nsresult DispatchToMainThreadAndWait(); + nsresult GetResponse(/*out*/ Vector<uint8_t>& response); + + private: + ~OCSPRequest() = default; + + static void OnTimeout(nsITimer* timer, void* closure); + nsresult NotifyDone(nsresult rv, MonitorAutoLock& proofOfLock); + + // mMonitor provides the memory barrier protecting these member variables. + // What happens is the originating thread creates an OCSPRequest object with + // the information necessary to perform an OCSP request. It sends the object + // to the main thread and waits on the monitor for the operation to complete. + // On the main thread, a channel is set up to perform the request. This gets + // dispatched to necko. At the same time, a timeout timer is initialized. If + // the necko request completes, the response data is filled out, mNotifiedDone + // is set to true, and the monitor is notified. The original thread then wakes + // up and continues with the results that have been filled out. If the request + // times out, again the response data is filled out, mNotifiedDone is set to + // true, and the monitor is notified. The first of these two events wins. That + // is, if the timeout timer fires but the request completes shortly after, the + // caller will see the request as having timed out. + // When the request completes (i.e. OnStreamComplete runs), the timer will be + // cancelled. This is how we know the closure in OnTimeout is valid. If the + // timer fires before OnStreamComplete runs, it should be safe to not cancel + // the request because necko has a strong reference to it. + Monitor mMonitor; + bool mNotifiedDone; + nsCOMPtr<nsIStreamLoader> mLoader; + const nsCString mAIALocation; + const OriginAttributes mOriginAttributes; + const mozilla::Span<const char> mPOSTData; + const TimeDuration mTimeout; + nsCOMPtr<nsITimer> mTimeoutTimer; + TimeStamp mStartTime; + nsresult mResponseResult; + Vector<uint8_t> mResponseBytes; +}; + +NS_IMPL_ISUPPORTS(OCSPRequest, nsIStreamLoaderObserver, nsIRunnable) + +OCSPRequest::OCSPRequest(const nsACString& aiaLocation, + const OriginAttributes& originAttributes, + const uint8_t (&ocspRequest)[OCSP_REQUEST_MAX_LENGTH], + size_t ocspRequestLength, TimeDuration timeout) + : mMonitor("OCSPRequest.mMonitor"), + mNotifiedDone(false), + mLoader(nullptr), + mAIALocation(aiaLocation), + mOriginAttributes(originAttributes), + mPOSTData(reinterpret_cast<const char*>(ocspRequest), ocspRequestLength), + mTimeout(timeout), + mTimeoutTimer(nullptr), + mStartTime(), + mResponseResult(NS_ERROR_FAILURE), + mResponseBytes() { + MOZ_ASSERT(ocspRequestLength <= OCSP_REQUEST_MAX_LENGTH); +} + +nsresult OCSPRequest::DispatchToMainThreadAndWait() { + MOZ_ASSERT(!NS_IsMainThread()); + if (NS_IsMainThread()) { + return NS_ERROR_FAILURE; + } + + MonitorAutoLock lock(mMonitor); + nsresult rv = NS_DispatchToMainThread(this); + if (NS_FAILED(rv)) { + return rv; + } + while (!mNotifiedDone) { + lock.Wait(); + } + + TimeStamp endTime = TimeStamp::Now(); + // CERT_VALIDATION_HTTP_REQUEST_RESULT: + // 0: request timed out + // 1: request succeeded + // 2: request failed + // 3: internal error + // If mStartTime was never set, we consider this an internal error. + // Otherwise, we managed to at least send the request. + if (mStartTime.IsNull()) { + Telemetry::Accumulate(Telemetry::CERT_VALIDATION_HTTP_REQUEST_RESULT, 3); + } else if (mResponseResult == NS_ERROR_NET_TIMEOUT) { + Telemetry::Accumulate(Telemetry::CERT_VALIDATION_HTTP_REQUEST_RESULT, 0); + Telemetry::AccumulateTimeDelta( + Telemetry::CERT_VALIDATION_HTTP_REQUEST_CANCELED_TIME, mStartTime, + endTime); + } else if (NS_SUCCEEDED(mResponseResult)) { + Telemetry::Accumulate(Telemetry::CERT_VALIDATION_HTTP_REQUEST_RESULT, 1); + Telemetry::AccumulateTimeDelta( + Telemetry::CERT_VALIDATION_HTTP_REQUEST_SUCCEEDED_TIME, mStartTime, + endTime); + } else { + Telemetry::Accumulate(Telemetry::CERT_VALIDATION_HTTP_REQUEST_RESULT, 2); + Telemetry::AccumulateTimeDelta( + Telemetry::CERT_VALIDATION_HTTP_REQUEST_FAILED_TIME, mStartTime, + endTime); + } + return rv; +} + +nsresult OCSPRequest::GetResponse(/*out*/ Vector<uint8_t>& response) { + MOZ_ASSERT(!NS_IsMainThread()); + if (NS_IsMainThread()) { + return NS_ERROR_FAILURE; + } + + MonitorAutoLock lock(mMonitor); + if (!mNotifiedDone) { + return NS_ERROR_IN_PROGRESS; + } + if (NS_FAILED(mResponseResult)) { + return mResponseResult; + } + response.clear(); + if (!response.append(mResponseBytes.begin(), mResponseBytes.length())) { + return NS_ERROR_OUT_OF_MEMORY; + } + return NS_OK; +} + +static constexpr auto OCSP_REQUEST_MIME_TYPE = "application/ocsp-request"_ns; +static constexpr auto OCSP_REQUEST_METHOD = "POST"_ns; + +NS_IMETHODIMP +OCSPRequest::Run() { + MOZ_ASSERT(NS_IsMainThread()); + if (!NS_IsMainThread()) { + return NS_ERROR_FAILURE; + } + + MonitorAutoLock lock(mMonitor); + + nsCOMPtr<nsIIOService> ios = do_GetIOService(); + if (!ios) { + return NotifyDone(NS_ERROR_FAILURE, lock); + } + + nsCOMPtr<nsIURI> uri; + nsresult rv = NS_NewURI(getter_AddRefs(uri), mAIALocation); + if (NS_FAILED(rv)) { + return NotifyDone(NS_ERROR_MALFORMED_URI, lock); + } + nsAutoCString scheme; + rv = uri->GetScheme(scheme); + if (NS_FAILED(rv)) { + return NotifyDone(rv, lock); + } + if (!scheme.LowerCaseEqualsLiteral("http")) { + return NotifyDone(NS_ERROR_MALFORMED_URI, lock); + } + + // See bug 1219935. + // We should not send OCSP request if the PAC is still loading. + nsCOMPtr<nsIProtocolProxyService> pps = + do_GetService(NS_PROTOCOLPROXYSERVICE_CONTRACTID, &rv); + if (NS_FAILED(rv)) { + return NotifyDone(rv, lock); + } + + if (pps->GetIsPACLoading()) { + return NotifyDone(NS_ERROR_FAILURE, lock); + } + + nsCOMPtr<nsIChannel> channel; + rv = ios->NewChannel(mAIALocation, nullptr, nullptr, + nullptr, // aLoadingNode + nsContentUtils::GetSystemPrincipal(), + nullptr, // aTriggeringPrincipal + nsILoadInfo::SEC_ALLOW_CROSS_ORIGIN_SEC_CONTEXT_IS_NULL, + nsIContentPolicy::TYPE_OTHER, getter_AddRefs(channel)); + if (NS_FAILED(rv)) { + return NotifyDone(rv, lock); + } + + // Security operations scheduled through normal HTTP channels are given + // high priority to accommodate real time OCSP transactions. + nsCOMPtr<nsISupportsPriority> priorityChannel = do_QueryInterface(channel); + if (priorityChannel) { + priorityChannel->AdjustPriority(nsISupportsPriority::PRIORITY_HIGHEST); + } + + channel->SetLoadFlags(nsIRequest::LOAD_ANONYMOUS | + nsIChannel::LOAD_BYPASS_SERVICE_WORKER | + nsIChannel::LOAD_BYPASS_URL_CLASSIFIER); + + nsCOMPtr<nsILoadInfo> loadInfo = channel->LoadInfo(); + + // Prevent HTTPS-Only Mode from upgrading the OCSP request. + uint32_t httpsOnlyStatus = loadInfo->GetHttpsOnlyStatus(); + httpsOnlyStatus |= nsILoadInfo::HTTPS_ONLY_EXEMPT; + loadInfo->SetHttpsOnlyStatus(httpsOnlyStatus); + + // allow deprecated HTTP request from SystemPrincipal + loadInfo->SetAllowDeprecatedSystemRequests(true); + + // For OCSP requests, only the first party domain and private browsing id + // aspects of origin attributes are used. This means that: + // a) if first party isolation is enabled, OCSP requests will be isolated + // according to the first party domain of the original https request + // b) OCSP requests are shared across different containers as long as first + // party isolation is not enabled and none of the containers are in private + // browsing mode. + if (mOriginAttributes != OriginAttributes()) { + OriginAttributes attrs; + attrs.mFirstPartyDomain = mOriginAttributes.mFirstPartyDomain; + attrs.mPrivateBrowsingId = mOriginAttributes.mPrivateBrowsingId; + + rv = loadInfo->SetOriginAttributes(attrs); + if (NS_FAILED(rv)) { + return NotifyDone(rv, lock); + } + } + + nsCOMPtr<nsIInputStream> uploadStream; + rv = NS_NewByteInputStream(getter_AddRefs(uploadStream), mPOSTData, + NS_ASSIGNMENT_COPY); + if (NS_FAILED(rv)) { + return NotifyDone(rv, lock); + } + nsCOMPtr<nsIUploadChannel> uploadChannel(do_QueryInterface(channel)); + if (!uploadChannel) { + return NotifyDone(NS_ERROR_FAILURE, lock); + } + rv = uploadChannel->SetUploadStream(uploadStream, OCSP_REQUEST_MIME_TYPE, -1); + if (NS_FAILED(rv)) { + return NotifyDone(rv, lock); + } + // Do not use SPDY or HTTP3 for internal security operations. It could result + // in the silent upgrade to ssl, which in turn could require an SSL + // operation to fulfill something like an OCSP fetch, which is an + // endless loop. + nsCOMPtr<nsIHttpChannelInternal> internalChannel = do_QueryInterface(channel); + if (!internalChannel) { + return NotifyDone(rv, lock); + } + rv = internalChannel->SetAllowSpdy(false); + if (NS_FAILED(rv)) { + return NotifyDone(rv, lock); + } + rv = internalChannel->SetAllowHttp3(false); + if (NS_FAILED(rv)) { + return NotifyDone(rv, lock); + } + nsCOMPtr<nsIHttpChannel> hchan = do_QueryInterface(channel); + if (!hchan) { + return NotifyDone(NS_ERROR_FAILURE, lock); + } + rv = hchan->SetAllowSTS(false); + if (NS_FAILED(rv)) { + return NotifyDone(rv, lock); + } + rv = hchan->SetRequestMethod(OCSP_REQUEST_METHOD); + if (NS_FAILED(rv)) { + return NotifyDone(rv, lock); + } + + rv = NS_NewStreamLoader(getter_AddRefs(mLoader), this); + if (NS_FAILED(rv)) { + return NotifyDone(rv, lock); + } + + rv = NS_NewTimerWithFuncCallback( + getter_AddRefs(mTimeoutTimer), OCSPRequest::OnTimeout, this, + mTimeout.ToMilliseconds(), nsITimer::TYPE_ONE_SHOT, "OCSPRequest::Run"); + if (NS_FAILED(rv)) { + return NotifyDone(rv, lock); + } + rv = hchan->AsyncOpen(this->mLoader); + if (NS_FAILED(rv)) { + return NotifyDone(rv, lock); + } + mStartTime = TimeStamp::Now(); + return NS_OK; +} + +nsresult OCSPRequest::NotifyDone(nsresult rv, MonitorAutoLock& lock) { + MOZ_ASSERT(NS_IsMainThread()); + if (!NS_IsMainThread()) { + return NS_ERROR_FAILURE; + } + + if (mNotifiedDone) { + return mResponseResult; + } + mLoader = nullptr; + mResponseResult = rv; + if (mTimeoutTimer) { + Unused << mTimeoutTimer->Cancel(); + } + mNotifiedDone = true; + lock.Notify(); + return rv; +} + +NS_IMETHODIMP +OCSPRequest::OnStreamComplete(nsIStreamLoader* aLoader, nsISupports* aContext, + nsresult aStatus, uint32_t responseLen, + const uint8_t* responseBytes) { + MOZ_ASSERT(NS_IsMainThread()); + if (!NS_IsMainThread()) { + return NS_ERROR_FAILURE; + } + + MonitorAutoLock lock(mMonitor); + + nsCOMPtr<nsIRequest> req; + nsresult rv = aLoader->GetRequest(getter_AddRefs(req)); + if (NS_FAILED(rv)) { + return NotifyDone(rv, lock); + } + + if (NS_FAILED(aStatus)) { + return NotifyDone(aStatus, lock); + } + + nsCOMPtr<nsIHttpChannel> hchan = do_QueryInterface(req); + if (!hchan) { + return NotifyDone(NS_ERROR_FAILURE, lock); + } + + bool requestSucceeded; + rv = hchan->GetRequestSucceeded(&requestSucceeded); + if (NS_FAILED(rv)) { + return NotifyDone(rv, lock); + } + if (!requestSucceeded) { + return NotifyDone(NS_ERROR_FAILURE, lock); + } + + unsigned int rcode; + rv = hchan->GetResponseStatus(&rcode); + if (NS_FAILED(rv)) { + return NotifyDone(rv, lock); + } + if (rcode != 200) { + return NotifyDone(NS_ERROR_FAILURE, lock); + } + + mResponseBytes.clear(); + if (!mResponseBytes.append(responseBytes, responseLen)) { + return NotifyDone(NS_ERROR_OUT_OF_MEMORY, lock); + } + mResponseResult = aStatus; + + return NotifyDone(NS_OK, lock); +} + +void OCSPRequest::OnTimeout(nsITimer* timer, void* closure) { + MOZ_ASSERT(NS_IsMainThread()); + if (!NS_IsMainThread()) { + return; + } + + // We know the OCSPRequest is still alive because if the request had completed + // (i.e. OnStreamComplete ran), the timer would have been cancelled in + // NotifyDone. + OCSPRequest* self = static_cast<OCSPRequest*>(closure); + MonitorAutoLock lock(self->mMonitor); + self->mTimeoutTimer = nullptr; + self->NotifyDone(NS_ERROR_NET_TIMEOUT, lock); +} + +mozilla::pkix::Result DoOCSPRequest( + const nsCString& aiaLocation, const OriginAttributes& originAttributes, + uint8_t (&ocspRequest)[OCSP_REQUEST_MAX_LENGTH], size_t ocspRequestLength, + TimeDuration timeout, /*out*/ Vector<uint8_t>& result) { + MOZ_ASSERT(!NS_IsMainThread()); + if (NS_IsMainThread()) { + return mozilla::pkix::Result::ERROR_OCSP_UNKNOWN_CERT; + } + + if (ocspRequestLength > OCSP_REQUEST_MAX_LENGTH) { + return mozilla::pkix::Result::FATAL_ERROR_LIBRARY_FAILURE; + } + + result.clear(); + MOZ_LOG(gPIPNSSLog, LogLevel::Debug, + ("DoOCSPRequest to '%s'", aiaLocation.get())); + + nsCOMPtr<nsIEventTarget> sts = + do_GetService(NS_SOCKETTRANSPORTSERVICE_CONTRACTID); + MOZ_ASSERT(sts); + if (!sts) { + return mozilla::pkix::Result::FATAL_ERROR_INVALID_STATE; + } + bool onSTSThread; + nsresult rv = sts->IsOnCurrentThread(&onSTSThread); + if (NS_FAILED(rv)) { + return mozilla::pkix::Result::FATAL_ERROR_LIBRARY_FAILURE; + } + MOZ_ASSERT(!onSTSThread); + if (onSTSThread) { + return mozilla::pkix::Result::FATAL_ERROR_INVALID_STATE; + } + + RefPtr<OCSPRequest> request(new OCSPRequest( + aiaLocation, originAttributes, ocspRequest, ocspRequestLength, timeout)); + rv = request->DispatchToMainThreadAndWait(); + if (NS_FAILED(rv)) { + return mozilla::pkix::Result::FATAL_ERROR_LIBRARY_FAILURE; + } + rv = request->GetResponse(result); + if (NS_FAILED(rv)) { + if (rv == NS_ERROR_MALFORMED_URI) { + return mozilla::pkix::Result::ERROR_CERT_BAD_ACCESS_LOCATION; + } + return mozilla::pkix::Result::ERROR_OCSP_SERVER_ERROR; + } + return Success; +} + +static char* ShowProtectedAuthPrompt(PK11SlotInfo* slot, + nsIInterfaceRequestor* ir) { + if (!NS_IsMainThread()) { + NS_ERROR("ShowProtectedAuthPrompt called off the main thread"); + return nullptr; + } + + char* protAuthRetVal = nullptr; + + // Get protected auth dialogs + nsCOMPtr<nsITokenDialogs> dialogs; + nsresult nsrv = + getNSSDialogs(getter_AddRefs(dialogs), NS_GET_IID(nsITokenDialogs), + NS_TOKENDIALOGS_CONTRACTID); + if (NS_SUCCEEDED(nsrv)) { + RefPtr<nsProtectedAuthThread> protectedAuthRunnable = + new nsProtectedAuthThread(); + protectedAuthRunnable->SetParams(slot); + + nsrv = dialogs->DisplayProtectedAuth(ir, protectedAuthRunnable); + + // We call join on the thread, + // so we can be sure that no simultaneous access will happen. + protectedAuthRunnable->Join(); + + if (NS_SUCCEEDED(nsrv)) { + SECStatus rv = protectedAuthRunnable->GetResult(); + switch (rv) { + case SECSuccess: + protAuthRetVal = + ToNewCString(nsDependentCString(PK11_PW_AUTHENTICATED)); + break; + case SECWouldBlock: + protAuthRetVal = ToNewCString(nsDependentCString(PK11_PW_RETRY)); + break; + default: + protAuthRetVal = nullptr; + break; + } + } + } + + return protAuthRetVal; +} + +class PK11PasswordPromptRunnable : public SyncRunnableBase { + public: + PK11PasswordPromptRunnable(PK11SlotInfo* slot, nsIInterfaceRequestor* ir) + : mResult(nullptr), mSlot(slot), mIR(ir) {} + virtual ~PK11PasswordPromptRunnable() = default; + + char* mResult; // out + virtual void RunOnTargetThread() override; + + private: + PK11SlotInfo* const mSlot; // in + nsIInterfaceRequestor* const mIR; // in +}; + +void PK11PasswordPromptRunnable::RunOnTargetThread() { + nsresult rv; + nsCOMPtr<nsIPrompt> prompt; + if (!mIR) { + rv = nsNSSComponent::GetNewPrompter(getter_AddRefs(prompt)); + if (NS_FAILED(rv)) { + return; + } + } else { + prompt = do_GetInterface(mIR); + MOZ_ASSERT(prompt, "Interface requestor should implement nsIPrompt"); + } + + if (!prompt) { + return; + } + + if (PK11_ProtectedAuthenticationPath(mSlot)) { + mResult = ShowProtectedAuthPrompt(mSlot, mIR); + return; + } + + nsAutoString promptString; + if (PK11_IsInternal(mSlot)) { + rv = GetPIPNSSBundleString("CertPasswordPromptDefault", promptString); + } else { + AutoTArray<nsString, 1> formatStrings = { + NS_ConvertUTF8toUTF16(PK11_GetTokenName(mSlot))}; + rv = PIPBundleFormatStringFromName("CertPasswordPrompt", formatStrings, + promptString); + } + if (NS_FAILED(rv)) { + return; + } + + nsString password; + // |checkState| is unused because |checkMsg| (the argument just before it) is + // null, but XPConnect requires it to point to a valid bool nonetheless. + bool checkState = false; + bool userClickedOK = false; + rv = prompt->PromptPassword(nullptr, promptString.get(), + getter_Copies(password), nullptr, &checkState, + &userClickedOK); + if (NS_FAILED(rv) || !userClickedOK) { + return; + } + + mResult = ToNewUTF8String(password); +} + +char* PK11PasswordPrompt(PK11SlotInfo* slot, PRBool /*retry*/, void* arg) { + RefPtr<PK11PasswordPromptRunnable> runnable(new PK11PasswordPromptRunnable( + slot, static_cast<nsIInterfaceRequestor*>(arg))); + runnable->DispatchToMainThreadAndWait(); + return runnable->mResult; +} + +nsCString getKeaGroupName(uint32_t aKeaGroup) { + nsCString groupName; + switch (aKeaGroup) { + case ssl_grp_ec_secp256r1: + groupName = "P256"_ns; + break; + case ssl_grp_ec_secp384r1: + groupName = "P384"_ns; + break; + case ssl_grp_ec_secp521r1: + groupName = "P521"_ns; + break; + case ssl_grp_ec_curve25519: + groupName = "x25519"_ns; + break; + case ssl_grp_ffdhe_2048: + groupName = "FF 2048"_ns; + break; + case ssl_grp_ffdhe_3072: + groupName = "FF 3072"_ns; + break; + case ssl_grp_none: + groupName = "none"_ns; + break; + case ssl_grp_ffdhe_custom: + groupName = "custom"_ns; + break; + // All other groups are not enabled in Firefox. See namedGroups in + // nsNSSIOLayer.cpp. + default: + // This really shouldn't happen! + MOZ_ASSERT_UNREACHABLE("Invalid key exchange group."); + groupName = "unknown group"_ns; + } + return groupName; +} + +nsCString getSignatureName(uint32_t aSignatureScheme) { + nsCString signatureName; + switch (aSignatureScheme) { + case ssl_sig_none: + signatureName = "none"_ns; + break; + case ssl_sig_rsa_pkcs1_sha1: + signatureName = "RSA-PKCS1-SHA1"_ns; + break; + case ssl_sig_rsa_pkcs1_sha256: + signatureName = "RSA-PKCS1-SHA256"_ns; + break; + case ssl_sig_rsa_pkcs1_sha384: + signatureName = "RSA-PKCS1-SHA384"_ns; + break; + case ssl_sig_rsa_pkcs1_sha512: + signatureName = "RSA-PKCS1-SHA512"_ns; + break; + case ssl_sig_ecdsa_secp256r1_sha256: + signatureName = "ECDSA-P256-SHA256"_ns; + break; + case ssl_sig_ecdsa_secp384r1_sha384: + signatureName = "ECDSA-P384-SHA384"_ns; + break; + case ssl_sig_ecdsa_secp521r1_sha512: + signatureName = "ECDSA-P521-SHA512"_ns; + break; + case ssl_sig_rsa_pss_sha256: + signatureName = "RSA-PSS-SHA256"_ns; + break; + case ssl_sig_rsa_pss_sha384: + signatureName = "RSA-PSS-SHA384"_ns; + break; + case ssl_sig_rsa_pss_sha512: + signatureName = "RSA-PSS-SHA512"_ns; + break; + case ssl_sig_ecdsa_sha1: + signatureName = "ECDSA-SHA1"_ns; + break; + case ssl_sig_rsa_pkcs1_sha1md5: + signatureName = "RSA-PKCS1-SHA1MD5"_ns; + break; + // All other groups are not enabled in Firefox. See sEnabledSignatureSchemes + // in nsNSSIOLayer.cpp. + default: + // This really shouldn't happen! + MOZ_ASSERT_UNREACHABLE("Invalid signature scheme."); + signatureName = "unknown signature"_ns; + } + return signatureName; +} + +// call with shutdown prevention lock held +static void PreliminaryHandshakeDone(PRFileDesc* fd) { + nsNSSSocketInfo* infoObject = (nsNSSSocketInfo*)fd->higher->secret; + if (!infoObject) return; + + SSLChannelInfo channelInfo; + if (SSL_GetChannelInfo(fd, &channelInfo, sizeof(channelInfo)) == SECSuccess) { + infoObject->SetSSLVersionUsed(channelInfo.protocolVersion); + infoObject->SetEarlyDataAccepted(channelInfo.earlyDataAccepted); + infoObject->SetResumed(channelInfo.resumed); + + SSLCipherSuiteInfo cipherInfo; + if (SSL_GetCipherSuiteInfo(channelInfo.cipherSuite, &cipherInfo, + sizeof cipherInfo) == SECSuccess) { + /* Set the Status information */ + infoObject->mHaveCipherSuiteAndProtocol = true; + infoObject->mCipherSuite = channelInfo.cipherSuite; + infoObject->mProtocolVersion = channelInfo.protocolVersion & 0xFF; + infoObject->mKeaGroup.Assign(getKeaGroupName(channelInfo.keaGroup)); + infoObject->mSignatureSchemeName.Assign( + getSignatureName(channelInfo.signatureScheme)); + infoObject->SetKEAUsed(channelInfo.keaType); + infoObject->SetKEAKeyBits(channelInfo.keaKeyBits); + infoObject->SetMACAlgorithmUsed(cipherInfo.macAlgorithm); + infoObject->mIsDelegatedCredential = channelInfo.peerDelegCred; + infoObject->mIsAcceptedEch = channelInfo.echAccepted; + } + } + + // Don't update NPN details on renegotiation. + if (infoObject->IsPreliminaryHandshakeDone()) { + return; + } + + // Get the NPN value. + SSLNextProtoState state; + unsigned char npnbuf[256]; + unsigned int npnlen; + + if (SSL_GetNextProto(fd, &state, npnbuf, &npnlen, + AssertedCast<unsigned int>(ArrayLength(npnbuf))) == + SECSuccess) { + if (state == SSL_NEXT_PROTO_NEGOTIATED || + state == SSL_NEXT_PROTO_SELECTED) { + infoObject->SetNegotiatedNPN(BitwiseCast<char*, unsigned char*>(npnbuf), + npnlen); + } else { + infoObject->SetNegotiatedNPN(nullptr, 0); + } + mozilla::Telemetry::Accumulate(Telemetry::SSL_NPN_TYPE, state); + } else { + infoObject->SetNegotiatedNPN(nullptr, 0); + } + + infoObject->SetPreliminaryHandshakeDone(); +} + +SECStatus CanFalseStartCallback(PRFileDesc* fd, void* client_data, + PRBool* canFalseStart) { + *canFalseStart = false; + + nsNSSSocketInfo* infoObject = (nsNSSSocketInfo*)fd->higher->secret; + if (!infoObject) { + PR_SetError(PR_INVALID_STATE_ERROR, 0); + return SECFailure; + } + + infoObject->SetFalseStartCallbackCalled(); + + PreliminaryHandshakeDone(fd); + + uint32_t reasonsForNotFalseStarting = 0; + + SSLChannelInfo channelInfo; + if (SSL_GetChannelInfo(fd, &channelInfo, sizeof(channelInfo)) != SECSuccess) { + return SECSuccess; + } + + SSLCipherSuiteInfo cipherInfo; + if (SSL_GetCipherSuiteInfo(channelInfo.cipherSuite, &cipherInfo, + sizeof(cipherInfo)) != SECSuccess) { + MOZ_LOG(gPIPNSSLog, LogLevel::Debug, + ("CanFalseStartCallback [%p] failed - " + " KEA %d\n", + fd, static_cast<int32_t>(channelInfo.keaType))); + return SECSuccess; + } + + // Prevent version downgrade attacks from TLS 1.2, and avoid False Start for + // TLS 1.3 and later. See Bug 861310 for all the details as to why. + if (channelInfo.protocolVersion != SSL_LIBRARY_VERSION_TLS_1_2) { + MOZ_LOG(gPIPNSSLog, LogLevel::Debug, + ("CanFalseStartCallback [%p] failed - " + "SSL Version must be TLS 1.2, was %x\n", + fd, static_cast<int32_t>(channelInfo.protocolVersion))); + reasonsForNotFalseStarting |= POSSIBLE_VERSION_DOWNGRADE; + } + + // See bug 952863 for why ECDHE is allowed, but DHE (and RSA) are not. + if (channelInfo.keaType != ssl_kea_ecdh) { + MOZ_LOG(gPIPNSSLog, LogLevel::Debug, + ("CanFalseStartCallback [%p] failed - " + "unsupported KEA %d\n", + fd, static_cast<int32_t>(channelInfo.keaType))); + reasonsForNotFalseStarting |= KEA_NOT_SUPPORTED; + } + + // Prevent downgrade attacks on the symmetric cipher. We do not allow CBC + // mode due to BEAST, POODLE, and other attacks on the MAC-then-Encrypt + // design. See bug 1109766 for more details. + if (cipherInfo.macAlgorithm != ssl_mac_aead) { + MOZ_LOG(gPIPNSSLog, LogLevel::Debug, + ("CanFalseStartCallback [%p] failed - non-AEAD cipher used, %d, " + "is not supported with False Start.\n", + fd, static_cast<int32_t>(cipherInfo.symCipher))); + reasonsForNotFalseStarting |= POSSIBLE_CIPHER_SUITE_DOWNGRADE; + } + + // XXX: An attacker can choose which protocols are advertised in the + // NPN extension. TODO(Bug 861311): We should restrict the ability + // of an attacker leverage this capability by restricting false start + // to the same protocol we previously saw for the server, after the + // first successful connection to the server. + + Telemetry::Accumulate(Telemetry::SSL_REASONS_FOR_NOT_FALSE_STARTING, + reasonsForNotFalseStarting); + + if (reasonsForNotFalseStarting == 0) { + *canFalseStart = PR_TRUE; + infoObject->SetFalseStarted(); + infoObject->NoteTimeUntilReady(); + MOZ_LOG(gPIPNSSLog, LogLevel::Debug, + ("CanFalseStartCallback [%p] ok\n", fd)); + } + + return SECSuccess; +} + +static void AccumulateNonECCKeySize(Telemetry::HistogramID probe, + uint32_t bits) { + unsigned int value = bits < 512 ? 1 + : bits == 512 ? 2 + : bits < 768 ? 3 + : bits == 768 ? 4 + : bits < 1024 ? 5 + : bits == 1024 ? 6 + : bits < 1280 ? 7 + : bits == 1280 ? 8 + : bits < 1536 ? 9 + : bits == 1536 ? 10 + : bits < 2048 ? 11 + : bits == 2048 ? 12 + : bits < 3072 ? 13 + : bits == 3072 ? 14 + : bits < 4096 ? 15 + : bits == 4096 ? 16 + : bits < 8192 ? 17 + : bits == 8192 ? 18 + : bits < 16384 ? 19 + : bits == 16384 ? 20 + : 0; + Telemetry::Accumulate(probe, value); +} + +// XXX: This attempts to map a bit count to an ECC named curve identifier. In +// the vast majority of situations, we only have the Suite B curves available. +// In that case, this mapping works fine. If we were to have more curves +// available, the mapping would be ambiguous since there could be multiple +// named curves for a given size (e.g. secp256k1 vs. secp256r1). We punt on +// that for now. See also NSS bug 323674. +static void AccumulateECCCurve(Telemetry::HistogramID probe, uint32_t bits) { + unsigned int value = bits == 255 ? 29 // Curve25519 + : bits == 256 ? 23 // P-256 + : bits == 384 ? 24 // P-384 + : bits == 521 ? 25 // P-521 + : 0; // Unknown + Telemetry::Accumulate(probe, value); +} + +static void AccumulateCipherSuite(Telemetry::HistogramID probe, + const SSLChannelInfo& channelInfo) { + uint32_t value; + switch (channelInfo.cipherSuite) { + // ECDHE key exchange + case TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256: + value = 1; + break; + case TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256: + value = 2; + break; + case TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA: + value = 3; + break; + case TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA: + value = 4; + break; + case TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA: + value = 5; + break; + case TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA: + value = 6; + break; + case TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA: + value = 7; + break; + case TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA: + value = 10; + break; + case TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256: + value = 11; + break; + case TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256: + value = 12; + break; + case TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384: + value = 13; + break; + case TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384: + value = 14; + break; + // DHE key exchange + case TLS_DHE_RSA_WITH_AES_128_CBC_SHA: + value = 21; + break; + case TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA: + value = 22; + break; + case TLS_DHE_RSA_WITH_AES_256_CBC_SHA: + value = 23; + break; + case TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA: + value = 24; + break; + case TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA: + value = 25; + break; + case TLS_DHE_DSS_WITH_AES_128_CBC_SHA: + value = 26; + break; + case TLS_DHE_DSS_WITH_CAMELLIA_128_CBC_SHA: + value = 27; + break; + case TLS_DHE_DSS_WITH_AES_256_CBC_SHA: + value = 28; + break; + case TLS_DHE_DSS_WITH_CAMELLIA_256_CBC_SHA: + value = 29; + break; + case TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA: + value = 30; + break; + // ECDH key exchange + case TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA: + value = 41; + break; + case TLS_ECDH_RSA_WITH_AES_128_CBC_SHA: + value = 42; + break; + case TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA: + value = 43; + break; + case TLS_ECDH_RSA_WITH_AES_256_CBC_SHA: + value = 44; + break; + case TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA: + value = 45; + break; + case TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA: + value = 46; + break; + // RSA key exchange + case TLS_RSA_WITH_AES_128_CBC_SHA: + value = 61; + break; + case TLS_RSA_WITH_CAMELLIA_128_CBC_SHA: + value = 62; + break; + case TLS_RSA_WITH_AES_256_CBC_SHA: + value = 63; + break; + case TLS_RSA_WITH_CAMELLIA_256_CBC_SHA: + value = 64; + break; + case SSL_RSA_FIPS_WITH_3DES_EDE_CBC_SHA: + value = 65; + break; + case TLS_RSA_WITH_3DES_EDE_CBC_SHA: + value = 66; + break; + case TLS_RSA_WITH_SEED_CBC_SHA: + value = 67; + break; + case TLS_RSA_WITH_AES_128_GCM_SHA256: + value = 68; + break; + case TLS_RSA_WITH_AES_256_GCM_SHA384: + value = 69; + break; + // TLS 1.3 PSK resumption + case TLS_AES_128_GCM_SHA256: + value = 70; + break; + case TLS_CHACHA20_POLY1305_SHA256: + value = 71; + break; + case TLS_AES_256_GCM_SHA384: + value = 72; + break; + // unknown + default: + value = 0; + break; + } + MOZ_ASSERT(value != 0); + Telemetry::Accumulate(probe, value); +} + +// In the case of session resumption, the AuthCertificate hook has been bypassed +// (because we've previously successfully connected to our peer). That being the +// case, we unfortunately don't know what the verified certificate chain was, if +// the peer's server certificate verified as extended validation, or what its CT +// status is (if enabled). To address this, we attempt to build a certificate +// chain here using as much of the original context as possible (e.g. stapled +// OCSP responses, SCTs, the hostname, the first party domain, etc.). Note that +// because we are on the socket thread, this must not cause any network +// requests, hence the use of FLAG_LOCAL_ONLY. +static void RebuildVerifiedCertificateInformation(PRFileDesc* fd, + nsNSSSocketInfo* infoObject) { + MOZ_ASSERT(fd); + MOZ_ASSERT(infoObject); + + if (!fd || !infoObject) { + return; + } + + UniqueCERTCertificate cert(SSL_PeerCertificate(fd)); + MOZ_ASSERT(cert, "SSL_PeerCertificate failed in TLS handshake callback?"); + if (!cert) { + return; + } + + Maybe<nsTArray<nsTArray<uint8_t>>> maybePeerCertsBytes; + UniqueCERTCertList peerCertChain(SSL_PeerCertificateChain(fd)); + if (!peerCertChain) { + MOZ_LOG(gPIPNSSLog, LogLevel::Debug, + ("RebuildVerifiedCertificateInformation: failed to get peer " + "certificate chain")); + } else { + nsTArray<nsTArray<uint8_t>> peerCertsBytes; + for (CERTCertListNode* n = CERT_LIST_HEAD(peerCertChain); + !CERT_LIST_END(n, peerCertChain); n = CERT_LIST_NEXT(n)) { + // Don't include the end-entity certificate. + if (n == CERT_LIST_HEAD(peerCertChain)) { + continue; + } + nsTArray<uint8_t> certBytes; + certBytes.AppendElements(n->cert->derCert.data, n->cert->derCert.len); + peerCertsBytes.AppendElement(std::move(certBytes)); + } + maybePeerCertsBytes.emplace(std::move(peerCertsBytes)); + } + + RefPtr<SharedCertVerifier> certVerifier(GetDefaultCertVerifier()); + MOZ_ASSERT(certVerifier, + "Certificate verifier uninitialized in TLS handshake callback?"); + if (!certVerifier) { + return; + } + + // We don't own these pointers. + const SECItemArray* stapledOCSPResponses = SSL_PeerStapledOCSPResponses(fd); + Maybe<nsTArray<uint8_t>> stapledOCSPResponse; + // we currently only support single stapled responses + if (stapledOCSPResponses && stapledOCSPResponses->len == 1) { + stapledOCSPResponse.emplace(); + stapledOCSPResponse->SetCapacity(stapledOCSPResponses->items[0].len); + stapledOCSPResponse->AppendElements(stapledOCSPResponses->items[0].data, + stapledOCSPResponses->items[0].len); + } + + Maybe<nsTArray<uint8_t>> sctsFromTLSExtension; + const SECItem* sctsFromTLSExtensionSECItem = SSL_PeerSignedCertTimestamps(fd); + if (sctsFromTLSExtensionSECItem) { + sctsFromTLSExtension.emplace(); + sctsFromTLSExtension->SetCapacity(sctsFromTLSExtensionSECItem->len); + sctsFromTLSExtension->AppendElements(sctsFromTLSExtensionSECItem->data, + sctsFromTLSExtensionSECItem->len); + } + + int flags = mozilla::psm::CertVerifier::FLAG_LOCAL_ONLY; + if (!infoObject->SharedState().IsOCSPStaplingEnabled() || + !infoObject->SharedState().IsOCSPMustStapleEnabled()) { + flags |= CertVerifier::FLAG_TLS_IGNORE_STATUS_REQUEST; + } + + SECOidTag evOidPolicy; + CertificateTransparencyInfo certificateTransparencyInfo; + UniqueCERTCertList builtChain; + const bool saveIntermediates = false; + bool isBuiltCertChainRootBuiltInRoot = false; + mozilla::pkix::Result rv = certVerifier->VerifySSLServerCert( + cert, mozilla::pkix::Now(), infoObject, infoObject->GetHostName(), + builtChain, flags, maybePeerCertsBytes, stapledOCSPResponse, + sctsFromTLSExtension, Nothing(), infoObject->GetOriginAttributes(), + saveIntermediates, &evOidPolicy, + nullptr, // OCSP stapling telemetry + nullptr, // key size telemetry + nullptr, // SHA-1 telemetry + nullptr, // pinning telemetry + &certificateTransparencyInfo, + nullptr, // CRLite telemetry, + &isBuiltCertChainRootBuiltInRoot); + + if (rv != Success) { + MOZ_LOG(gPIPNSSLog, LogLevel::Debug, + ("HandshakeCallback: couldn't rebuild verified certificate info")); + } + + RefPtr<nsNSSCertificate> nssc(nsNSSCertificate::Create(cert.get())); + if (rv == Success && evOidPolicy != SEC_OID_UNKNOWN) { + MOZ_LOG(gPIPNSSLog, LogLevel::Debug, + ("HandshakeCallback using NEW cert %p (is EV)", nssc.get())); + infoObject->SetServerCert(nssc, EVStatus::EV); + } else { + MOZ_LOG(gPIPNSSLog, LogLevel::Debug, + ("HandshakeCallback using NEW cert %p (is not EV)", nssc.get())); + infoObject->SetServerCert(nssc, EVStatus::NotEV); + } + + if (rv == Success) { + uint16_t status = + TransportSecurityInfo::ConvertCertificateTransparencyInfoToStatus( + certificateTransparencyInfo); + infoObject->SetCertificateTransparencyStatus(status); + nsTArray<nsTArray<uint8_t>> certBytesArray = + TransportSecurityInfo::CreateCertBytesArray(builtChain); + infoObject->SetSucceededCertChain(std::move(certBytesArray)); + infoObject->SetIsBuiltCertChainRootBuiltInRoot( + isBuiltCertChainRootBuiltInRoot); + } +} + +nsresult IsCertificateDistrustImminent( + const nsTArray<RefPtr<nsIX509Cert>>& aCertArray, + /* out */ bool& isDistrusted) { + if (aCertArray.IsEmpty()) { + return NS_ERROR_INVALID_ARG; + } + + nsCOMPtr<nsIX509Cert> rootCert; + nsTArray<RefPtr<nsIX509Cert>> intCerts; + nsCOMPtr<nsIX509Cert> eeCert; + + nsresult rv = nsNSSCertificate::SegmentCertificateChain(aCertArray, rootCert, + intCerts, eeCert); + if (NS_FAILED(rv)) { + return rv; + } + + // Check the test certificate condition first; this is a special certificate + // that gets the 'imminent distrust' treatment; this is so that the distrust + // UX code does not become stale, as it will need regular use. See Bug 1409257 + // for context. Please do not remove this when adjusting the rest of the + // method. + UniqueCERTCertificate nssEECert(eeCert->GetCert()); + if (!nssEECert) { + return NS_ERROR_FAILURE; + } + isDistrusted = + CertDNIsInList(nssEECert.get(), TestImminentDistrustEndEntityDNs); + if (isDistrusted) { + // Exit early + return NS_OK; + } + + UniqueCERTCertificate nssRootCert(rootCert->GetCert()); + if (!nssRootCert) { + return NS_ERROR_FAILURE; + } + + // Proceed with the Symantec imminent distrust algorithm. This algorithm is + // to be removed in Firefox 63, when the validity period check will also be + // removed from the code in NSSCertDBTrustDomain. + if (CertDNIsInList(nssRootCert.get(), RootSymantecDNs)) { + rv = CheckForSymantecDistrust(intCerts, RootAppleAndGoogleSPKIs, + isDistrusted); + if (NS_FAILED(rv)) { + return rv; + } + } + return NS_OK; +} + +void HandshakeCallback(PRFileDesc* fd, void* client_data) { + SECStatus rv; + + nsNSSSocketInfo* infoObject = (nsNSSSocketInfo*)fd->higher->secret; + + // Do the bookkeeping that needs to be done after the + // server's ServerHello...ServerHelloDone have been processed, but that + // doesn't need the handshake to be completed. + PreliminaryHandshakeDone(fd); + + nsSSLIOLayerHelpers& ioLayerHelpers = + infoObject->SharedState().IOLayerHelpers(); + + SSLVersionRange versions(infoObject->GetTLSVersionRange()); + + MOZ_LOG(gPIPNSSLog, LogLevel::Debug, + ("[%p] HandshakeCallback: succeeded using TLS version range " + "(0x%04x,0x%04x)\n", + fd, static_cast<unsigned int>(versions.min), + static_cast<unsigned int>(versions.max))); + + // If the handshake completed, then we know the site is TLS tolerant + ioLayerHelpers.rememberTolerantAtVersion(infoObject->GetHostName(), + infoObject->GetPort(), versions.max); + + SSLChannelInfo channelInfo; + rv = SSL_GetChannelInfo(fd, &channelInfo, sizeof(channelInfo)); + MOZ_ASSERT(rv == SECSuccess); + if (rv == SECSuccess) { + // Get the protocol version for telemetry + // 1=tls1, 2=tls1.1, 3=tls1.2 + unsigned int versionEnum = channelInfo.protocolVersion & 0xFF; + MOZ_ASSERT(versionEnum > 0); + Telemetry::Accumulate(Telemetry::SSL_HANDSHAKE_VERSION, versionEnum); + AccumulateCipherSuite(infoObject->IsFullHandshake() + ? Telemetry::SSL_CIPHER_SUITE_FULL + : Telemetry::SSL_CIPHER_SUITE_RESUMED, + channelInfo); + + SSLCipherSuiteInfo cipherInfo; + rv = SSL_GetCipherSuiteInfo(channelInfo.cipherSuite, &cipherInfo, + sizeof cipherInfo); + MOZ_ASSERT(rv == SECSuccess); + if (rv == SECSuccess) { + // keyExchange null=0, rsa=1, dh=2, fortezza=3, ecdh=4 + Telemetry::Accumulate(infoObject->IsFullHandshake() + ? Telemetry::SSL_KEY_EXCHANGE_ALGORITHM_FULL + : Telemetry::SSL_KEY_EXCHANGE_ALGORITHM_RESUMED, + channelInfo.keaType); + + MOZ_ASSERT(infoObject->GetKEAUsed() == channelInfo.keaType); + + if (infoObject->IsFullHandshake()) { + switch (channelInfo.keaType) { + case ssl_kea_rsa: + AccumulateNonECCKeySize(Telemetry::SSL_KEA_RSA_KEY_SIZE_FULL, + channelInfo.keaKeyBits); + break; + case ssl_kea_dh: + AccumulateNonECCKeySize(Telemetry::SSL_KEA_DHE_KEY_SIZE_FULL, + channelInfo.keaKeyBits); + break; + case ssl_kea_ecdh: + AccumulateECCCurve(Telemetry::SSL_KEA_ECDHE_CURVE_FULL, + channelInfo.keaKeyBits); + break; + default: + MOZ_CRASH("impossible KEA"); + break; + } + + Telemetry::Accumulate(Telemetry::SSL_AUTH_ALGORITHM_FULL, + channelInfo.authType); + + // RSA key exchange doesn't use a signature for auth. + if (channelInfo.keaType != ssl_kea_rsa) { + switch (channelInfo.authType) { + case ssl_auth_rsa: + case ssl_auth_rsa_sign: + AccumulateNonECCKeySize(Telemetry::SSL_AUTH_RSA_KEY_SIZE_FULL, + channelInfo.authKeyBits); + break; + case ssl_auth_ecdsa: + AccumulateECCCurve(Telemetry::SSL_AUTH_ECDSA_CURVE_FULL, + channelInfo.authKeyBits); + break; + default: + MOZ_CRASH("impossible auth algorithm"); + break; + } + } + } + + Telemetry::Accumulate(infoObject->IsFullHandshake() + ? Telemetry::SSL_SYMMETRIC_CIPHER_FULL + : Telemetry::SSL_SYMMETRIC_CIPHER_RESUMED, + cipherInfo.symCipher); + } + } + + PRBool siteSupportsSafeRenego; + if (channelInfo.protocolVersion != SSL_LIBRARY_VERSION_TLS_1_3) { + rv = SSL_HandshakeNegotiatedExtension(fd, ssl_renegotiation_info_xtn, + &siteSupportsSafeRenego); + MOZ_ASSERT(rv == SECSuccess); + if (rv != SECSuccess) { + siteSupportsSafeRenego = false; + } + } else { + // TLS 1.3 dropped support for renegotiation. + siteSupportsSafeRenego = true; + } + bool renegotiationUnsafe = !siteSupportsSafeRenego && + ioLayerHelpers.treatUnsafeNegotiationAsBroken(); + + bool deprecatedTlsVer = + (channelInfo.protocolVersion < SSL_LIBRARY_VERSION_TLS_1_2); + RememberCertErrorsTable::GetInstance().LookupCertErrorBits(infoObject); + + uint32_t state; + if (renegotiationUnsafe || deprecatedTlsVer) { + state = nsIWebProgressListener::STATE_IS_BROKEN; + } else { + state = nsIWebProgressListener::STATE_IS_SECURE; + SSLVersionRange defVersion; + rv = SSL_VersionRangeGetDefault(ssl_variant_stream, &defVersion); + if (rv == SECSuccess && versions.max >= defVersion.max) { + // we know this site no longer requires a version fallback + ioLayerHelpers.removeInsecureFallbackSite(infoObject->GetHostName(), + infoObject->GetPort()); + } + } + + if (infoObject->HasServerCert()) { + MOZ_LOG(gPIPNSSLog, LogLevel::Debug, + ("HandshakeCallback KEEPING existing cert\n")); + } else { + if (StaticPrefs::network_ssl_tokens_cache_enabled()) { + infoObject->RebuildCertificateInfoFromSSLTokenCache(); + } else { + RebuildVerifiedCertificateInformation(fd, infoObject); + } + } + + nsTArray<RefPtr<nsIX509Cert>> succeededCertArray; + // The list could be empty. Bug 731478 will reduce the incidence of empty + // succeeded cert chains through better caching. + nsresult srv = infoObject->GetSucceededCertChain(succeededCertArray); + + bool distrustImminent; + if (NS_SUCCEEDED(srv)) { + srv = IsCertificateDistrustImminent(succeededCertArray, distrustImminent); + } + + if (NS_SUCCEEDED(srv) && distrustImminent) { + state |= nsIWebProgressListener::STATE_CERT_DISTRUST_IMMINENT; + } + + bool domainMismatch; + bool untrusted; + bool notValidAtThisTime; + // These all return NS_OK, so don't even bother checking the return values. + Unused << infoObject->GetIsDomainMismatch(&domainMismatch); + Unused << infoObject->GetIsUntrusted(&untrusted); + Unused << infoObject->GetIsNotValidAtThisTime(¬ValidAtThisTime); + // If we're here, the TLS handshake has succeeded. Thus if any of these + // booleans are true, the user has added an override for a certificate error. + if (domainMismatch || untrusted || notValidAtThisTime) { + state |= nsIWebProgressListener::STATE_CERT_USER_OVERRIDDEN; + } + + infoObject->SetSecurityState(state); + + // XXX Bug 883674: We shouldn't be formatting messages here in PSM; instead, + // we should set a flag on the channel that higher (UI) level code can check + // to log the warning. In particular, these warnings should go to the web + // console instead of to the error console. Also, the warning is not + // localized. + if (!siteSupportsSafeRenego) { + NS_ConvertASCIItoUTF16 msg(infoObject->GetHostName()); + msg.AppendLiteral(" : server does not support RFC 5746, see CVE-2009-3555"); + + nsContentUtils::LogSimpleConsoleError( + msg, "SSL", !!infoObject->GetOriginAttributes().mPrivateBrowsingId, + true /* from chrome context */); + } + + infoObject->NoteTimeUntilReady(); + infoObject->SetHandshakeCompleted(); +} |