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Diffstat (limited to 'netwerk/base/nsNetUtil.cpp')
-rw-r--r-- | netwerk/base/nsNetUtil.cpp | 3268 |
1 files changed, 3268 insertions, 0 deletions
diff --git a/netwerk/base/nsNetUtil.cpp b/netwerk/base/nsNetUtil.cpp new file mode 100644 index 0000000000..1e50e5cebf --- /dev/null +++ b/netwerk/base/nsNetUtil.cpp @@ -0,0 +1,3268 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim:set ts=4 sw=2 sts=2 et cin: */ +/* 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/. */ + +// HttpLog.h should generally be included first +#include "HttpLog.h" + +#include "nsNetUtil.h" + +#include "mozilla/Atomics.h" +#include "mozilla/Encoding.h" +#include "mozilla/LoadContext.h" +#include "mozilla/LoadInfo.h" +#include "mozilla/BasePrincipal.h" +#include "mozilla/Monitor.h" +#include "mozilla/StaticPrefs_network.h" +#include "mozilla/StaticPrefs_privacy.h" +#include "mozilla/StoragePrincipalHelper.h" +#include "mozilla/TaskQueue.h" +#include "mozilla/Telemetry.h" +#include "nsBufferedStreams.h" +#include "nsCategoryCache.h" +#include "nsComponentManagerUtils.h" +#include "nsContentUtils.h" +#include "nsFileStreams.h" +#include "nsHashKeys.h" +#include "nsHttp.h" +#include "nsMimeTypes.h" +#include "nsIAuthPrompt.h" +#include "nsIAuthPrompt2.h" +#include "nsIAuthPromptAdapterFactory.h" +#include "nsIBufferedStreams.h" +#include "nsBufferedStreams.h" +#include "nsIChannelEventSink.h" +#include "nsIContentSniffer.h" +#include "mozilla/dom/Document.h" +#include "nsIDownloader.h" +#include "nsIFileProtocolHandler.h" +#include "nsIFileStreams.h" +#include "nsIFileURL.h" +#include "nsIIDNService.h" +#include "nsIInputStreamChannel.h" +#include "nsIInputStreamPump.h" +#include "nsIInterfaceRequestorUtils.h" +#include "nsILoadContext.h" +#include "nsIMIMEHeaderParam.h" +#include "nsINode.h" +#include "nsIObjectLoadingContent.h" +#include "nsIOfflineCacheUpdate.h" +#include "nsPersistentProperties.h" +#include "nsIPrivateBrowsingChannel.h" +#include "nsIPropertyBag2.h" +#include "nsIProtocolProxyService.h" +#include "mozilla/net/RedirectChannelRegistrar.h" +#include "nsRequestObserverProxy.h" +#include "nsISensitiveInfoHiddenURI.h" +#include "nsISimpleStreamListener.h" +#include "nsISocketProvider.h" +#include "nsIStandardURL.h" +#include "nsIStreamLoader.h" +#include "nsIIncrementalStreamLoader.h" +#include "nsStringStream.h" +#include "nsSyncStreamListener.h" +#include "nsITextToSubURI.h" +#include "nsIURIWithSpecialOrigin.h" +#include "nsIViewSourceChannel.h" +#include "nsInterfaceRequestorAgg.h" +#include "plstr.h" +#include "nsINestedURI.h" +#include "mozilla/dom/nsCSPUtils.h" +#include "mozilla/dom/nsHTTPSOnlyUtils.h" +#include "mozilla/dom/nsMixedContentBlocker.h" +#include "mozilla/dom/BlobURLProtocolHandler.h" +#include "mozilla/net/HttpBaseChannel.h" +#include "nsIScriptError.h" +#include "nsISiteSecurityService.h" +#include "nsHttpHandler.h" +#include "nsNSSComponent.h" +#include "nsIRedirectHistoryEntry.h" +#include "nsICertStorage.h" +#include "nsICertOverrideService.h" +#include "nsQueryObject.h" +#include "mozIThirdPartyUtil.h" +#include "../mime/nsMIMEHeaderParamImpl.h" +#include "nsStandardURL.h" +#include "DefaultURI.h" +#include "nsChromeProtocolHandler.h" +#include "nsJSProtocolHandler.h" +#include "nsDataHandler.h" +#include "mozilla/dom/BlobURLProtocolHandler.h" +#include "nsStreamUtils.h" +#include "nsSocketTransportService2.h" +#include "nsViewSourceHandler.h" +#include "nsJARURI.h" +#include "nsIconURI.h" +#include "nsAboutProtocolHandler.h" +#include "nsResProtocolHandler.h" +#include "mozilla/net/ExtensionProtocolHandler.h" +#include "mozilla/net/PageThumbProtocolHandler.h" +#include "mozilla/net/SFVService.h" +#include <limits> + +#if defined(MOZ_THUNDERBIRD) || defined(MOZ_SUITE) +# include "nsNewMailnewsURI.h" +#endif + +using namespace mozilla; +using namespace mozilla::net; +using mozilla::dom::BlobURLProtocolHandler; +using mozilla::dom::ClientInfo; +using mozilla::dom::PerformanceStorage; +using mozilla::dom::ServiceWorkerDescriptor; + +#define MAX_RECURSION_COUNT 50 + +already_AddRefed<nsIIOService> do_GetIOService(nsresult* error /* = 0 */) { + nsCOMPtr<nsIIOService> io = mozilla::services::GetIOService(); + if (error) *error = io ? NS_OK : NS_ERROR_FAILURE; + return io.forget(); +} + +nsresult NS_NewLocalFileInputStream(nsIInputStream** result, nsIFile* file, + int32_t ioFlags /* = -1 */, + int32_t perm /* = -1 */, + int32_t behaviorFlags /* = 0 */) { + nsresult rv; + nsCOMPtr<nsIFileInputStream> in = + do_CreateInstance(NS_LOCALFILEINPUTSTREAM_CONTRACTID, &rv); + if (NS_SUCCEEDED(rv)) { + rv = in->Init(file, ioFlags, perm, behaviorFlags); + if (NS_SUCCEEDED(rv)) in.forget(result); + } + return rv; +} + +Result<nsCOMPtr<nsIInputStream>, nsresult> NS_NewLocalFileInputStream( + nsIFile* file, int32_t ioFlags /* = -1 */, int32_t perm /* = -1 */, + int32_t behaviorFlags /* = 0 */) { + nsCOMPtr<nsIInputStream> stream; + const nsresult rv = NS_NewLocalFileInputStream(getter_AddRefs(stream), file, + ioFlags, perm, behaviorFlags); + if (NS_SUCCEEDED(rv)) { + return stream; + } + return Err(rv); +} + +nsresult NS_NewLocalFileOutputStream(nsIOutputStream** result, nsIFile* file, + int32_t ioFlags /* = -1 */, + int32_t perm /* = -1 */, + int32_t behaviorFlags /* = 0 */) { + nsresult rv; + nsCOMPtr<nsIFileOutputStream> out = + do_CreateInstance(NS_LOCALFILEOUTPUTSTREAM_CONTRACTID, &rv); + if (NS_SUCCEEDED(rv)) { + rv = out->Init(file, ioFlags, perm, behaviorFlags); + if (NS_SUCCEEDED(rv)) out.forget(result); + } + return rv; +} + +Result<nsCOMPtr<nsIOutputStream>, nsresult> NS_NewLocalFileOutputStream( + nsIFile* file, int32_t ioFlags /* = -1 */, int32_t perm /* = -1 */, + int32_t behaviorFlags /* = 0 */) { + nsCOMPtr<nsIOutputStream> stream; + const nsresult rv = NS_NewLocalFileOutputStream(getter_AddRefs(stream), file, + ioFlags, perm, behaviorFlags); + if (NS_SUCCEEDED(rv)) { + return stream; + } + return Err(rv); +} + +nsresult NS_NewLocalFileOutputStream(nsIOutputStream** result, + const mozilla::ipc::FileDescriptor& fd) { + nsCOMPtr<nsIFileOutputStream> out; + nsFileOutputStream::Create(nullptr, NS_GET_IID(nsIFileOutputStream), + getter_AddRefs(out)); + + nsresult rv = + static_cast<nsFileOutputStream*>(out.get())->InitWithFileDescriptor(fd); + if (NS_FAILED(rv)) { + return rv; + } + + out.forget(result); + return NS_OK; +} + +nsresult net_EnsureIOService(nsIIOService** ios, nsCOMPtr<nsIIOService>& grip) { + nsresult rv = NS_OK; + if (!*ios) { + grip = do_GetIOService(&rv); + *ios = grip; + } + return rv; +} + +nsresult NS_NewFileURI( + nsIURI** result, nsIFile* spec, + nsIIOService* + ioService /* = nullptr */) // pass in nsIIOService to optimize callers +{ + nsresult rv; + nsCOMPtr<nsIIOService> grip; + rv = net_EnsureIOService(&ioService, grip); + if (ioService) rv = ioService->NewFileURI(spec, result); + return rv; +} + +nsresult NS_GetURIWithNewRef(nsIURI* aInput, const nsACString& aRef, + nsIURI** aOutput) { + MOZ_DIAGNOSTIC_ASSERT(aRef.IsEmpty() || aRef[0] == '#'); + + if (NS_WARN_IF(!aInput || !aOutput)) { + return NS_ERROR_INVALID_ARG; + } + + bool hasRef; + nsresult rv = aInput->GetHasRef(&hasRef); + + nsAutoCString ref; + if (NS_SUCCEEDED(rv)) { + rv = aInput->GetRef(ref); + } + + // If the ref is already equal to the new ref, we do not need to do anything. + // Also, if the GetRef failed (it could return NS_ERROR_NOT_IMPLEMENTED) + // we can assume SetRef would fail as well, so returning the original + // URI is OK. + // + // Note that aRef contains the hash, but ref doesn't, so need to account for + // that in the equality check. + if (NS_FAILED(rv) || (!hasRef && aRef.IsEmpty()) || + (!aRef.IsEmpty() && hasRef && + Substring(aRef.Data() + 1, aRef.Length() - 1) == ref)) { + nsCOMPtr<nsIURI> uri = aInput; + uri.forget(aOutput); + return NS_OK; + } + + return NS_MutateURI(aInput).SetRef(aRef).Finalize(aOutput); +} + +nsresult NS_GetURIWithoutRef(nsIURI* aInput, nsIURI** aOutput) { + return NS_GetURIWithNewRef(aInput, ""_ns, aOutput); +} + +nsresult NS_NewChannelInternal( + nsIChannel** outChannel, nsIURI* aUri, nsILoadInfo* aLoadInfo, + PerformanceStorage* aPerformanceStorage /* = nullptr */, + nsILoadGroup* aLoadGroup /* = nullptr */, + nsIInterfaceRequestor* aCallbacks /* = nullptr */, + nsLoadFlags aLoadFlags /* = nsIRequest::LOAD_NORMAL */, + nsIIOService* aIoService /* = nullptr */) { + // NS_NewChannelInternal is mostly called for channel redirects. We should + // allow the creation of a channel even if the original channel did not have a + // loadinfo attached. + NS_ENSURE_ARG_POINTER(outChannel); + + nsCOMPtr<nsIIOService> grip; + nsresult rv = net_EnsureIOService(&aIoService, grip); + NS_ENSURE_SUCCESS(rv, rv); + + nsCOMPtr<nsIChannel> channel; + rv = aIoService->NewChannelFromURIWithLoadInfo(aUri, aLoadInfo, + getter_AddRefs(channel)); + NS_ENSURE_SUCCESS(rv, rv); + + if (aLoadGroup) { + rv = channel->SetLoadGroup(aLoadGroup); + NS_ENSURE_SUCCESS(rv, rv); + } + + if (aCallbacks) { + rv = channel->SetNotificationCallbacks(aCallbacks); + NS_ENSURE_SUCCESS(rv, rv); + } + +#ifdef DEBUG + nsLoadFlags channelLoadFlags = 0; + channel->GetLoadFlags(&channelLoadFlags); + // Will be removed when we remove LOAD_REPLACE altogether + // This check is trying to catch protocol handlers that still + // try to set the LOAD_REPLACE flag. + MOZ_DIAGNOSTIC_ASSERT(!(channelLoadFlags & nsIChannel::LOAD_REPLACE)); +#endif + + if (aLoadFlags != nsIRequest::LOAD_NORMAL) { + rv = channel->SetLoadFlags(aLoadFlags); + NS_ENSURE_SUCCESS(rv, rv); + } + + if (aPerformanceStorage) { + nsCOMPtr<nsILoadInfo> loadInfo = channel->LoadInfo(); + loadInfo->SetPerformanceStorage(aPerformanceStorage); + } + + channel.forget(outChannel); + return NS_OK; +} + +namespace { + +void AssertLoadingPrincipalAndClientInfoMatch( + nsIPrincipal* aLoadingPrincipal, const ClientInfo& aLoadingClientInfo, + nsContentPolicyType aType) { +#ifdef MOZ_DIAGNOSTIC_ASSERT_ENABLED + // Verify that the provided loading ClientInfo matches the loading + // principal. Unfortunately we can't just use nsIPrincipal::Equals() here + // because of some corner cases: + // + // 1. Worker debugger scripts want to use a system loading principal for + // worker scripts with a content principal. We exempt these from this + // check. + // 2. Null principals currently require exact object identity for + // nsIPrincipal::Equals() to return true. This doesn't work here because + // ClientInfo::GetPrincipal() uses PrincipalInfoToPrincipal() to allocate + // a new object. To work around this we compare the principal origin + // string itself. If bug 1431771 is fixed then we could switch to + // Equals(). + + // Allow worker debugger to load with a system principal. + if (aLoadingPrincipal->IsSystemPrincipal() && + (aType == nsIContentPolicy::TYPE_INTERNAL_WORKER || + aType == nsIContentPolicy::TYPE_INTERNAL_SHARED_WORKER || + aType == nsIContentPolicy::TYPE_INTERNAL_SERVICE_WORKER || + aType == nsIContentPolicy::TYPE_INTERNAL_WORKER_IMPORT_SCRIPTS)) { + return; + } + + // Perform a fast comparison for most principal checks. + auto clientPrincipalOrErr(aLoadingClientInfo.GetPrincipal()); + if (clientPrincipalOrErr.isOk()) { + nsCOMPtr<nsIPrincipal> clientPrincipal = clientPrincipalOrErr.unwrap(); + if (aLoadingPrincipal->Equals(clientPrincipal)) { + return; + } + // Fall back to a slower origin equality test to support null principals. + nsAutoCString loadingOrigin; + MOZ_ALWAYS_SUCCEEDS(aLoadingPrincipal->GetOrigin(loadingOrigin)); + + nsAutoCString clientOrigin; + MOZ_ALWAYS_SUCCEEDS(clientPrincipal->GetOrigin(clientOrigin)); + + MOZ_DIAGNOSTIC_ASSERT(loadingOrigin == clientOrigin); + } +#endif +} + +} // namespace + +nsresult NS_NewChannel(nsIChannel** outChannel, nsIURI* aUri, + nsIPrincipal* aLoadingPrincipal, + nsSecurityFlags aSecurityFlags, + nsContentPolicyType aContentPolicyType, + nsICookieJarSettings* aCookieJarSettings /* = nullptr */, + PerformanceStorage* aPerformanceStorage /* = nullptr */, + nsILoadGroup* aLoadGroup /* = nullptr */, + nsIInterfaceRequestor* aCallbacks /* = nullptr */, + nsLoadFlags aLoadFlags /* = nsIRequest::LOAD_NORMAL */, + nsIIOService* aIoService /* = nullptr */, + uint32_t aSandboxFlags /* = 0 */) { + return NS_NewChannelInternal( + outChannel, aUri, + nullptr, // aLoadingNode, + aLoadingPrincipal, + nullptr, // aTriggeringPrincipal + Maybe<ClientInfo>(), Maybe<ServiceWorkerDescriptor>(), aSecurityFlags, + aContentPolicyType, aCookieJarSettings, aPerformanceStorage, aLoadGroup, + aCallbacks, aLoadFlags, aIoService, aSandboxFlags); +} + +nsresult NS_NewChannel(nsIChannel** outChannel, nsIURI* aUri, + nsIPrincipal* aLoadingPrincipal, + const ClientInfo& aLoadingClientInfo, + const Maybe<ServiceWorkerDescriptor>& aController, + nsSecurityFlags aSecurityFlags, + nsContentPolicyType aContentPolicyType, + nsICookieJarSettings* aCookieJarSettings /* = nullptr */, + PerformanceStorage* aPerformanceStorage /* = nullptr */, + nsILoadGroup* aLoadGroup /* = nullptr */, + nsIInterfaceRequestor* aCallbacks /* = nullptr */, + nsLoadFlags aLoadFlags /* = nsIRequest::LOAD_NORMAL */, + nsIIOService* aIoService /* = nullptr */, + uint32_t aSandboxFlags /* = 0 */) { + AssertLoadingPrincipalAndClientInfoMatch( + aLoadingPrincipal, aLoadingClientInfo, aContentPolicyType); + + Maybe<ClientInfo> loadingClientInfo; + loadingClientInfo.emplace(aLoadingClientInfo); + + return NS_NewChannelInternal(outChannel, aUri, + nullptr, // aLoadingNode, + aLoadingPrincipal, + nullptr, // aTriggeringPrincipal + loadingClientInfo, aController, aSecurityFlags, + aContentPolicyType, aCookieJarSettings, + aPerformanceStorage, aLoadGroup, aCallbacks, + aLoadFlags, aIoService, aSandboxFlags); +} + +nsresult NS_NewChannelInternal( + nsIChannel** outChannel, nsIURI* aUri, nsINode* aLoadingNode, + nsIPrincipal* aLoadingPrincipal, nsIPrincipal* aTriggeringPrincipal, + const Maybe<ClientInfo>& aLoadingClientInfo, + const Maybe<ServiceWorkerDescriptor>& aController, + nsSecurityFlags aSecurityFlags, nsContentPolicyType aContentPolicyType, + nsICookieJarSettings* aCookieJarSettings /* = nullptr */, + PerformanceStorage* aPerformanceStorage /* = nullptr */, + nsILoadGroup* aLoadGroup /* = nullptr */, + nsIInterfaceRequestor* aCallbacks /* = nullptr */, + nsLoadFlags aLoadFlags /* = nsIRequest::LOAD_NORMAL */, + nsIIOService* aIoService /* = nullptr */, + uint32_t aSandboxFlags /* = 0 */) { + NS_ENSURE_ARG_POINTER(outChannel); + + nsCOMPtr<nsIIOService> grip; + nsresult rv = net_EnsureIOService(&aIoService, grip); + NS_ENSURE_SUCCESS(rv, rv); + + nsCOMPtr<nsIChannel> channel; + rv = aIoService->NewChannelFromURIWithClientAndController( + aUri, aLoadingNode, aLoadingPrincipal, aTriggeringPrincipal, + aLoadingClientInfo, aController, aSecurityFlags, aContentPolicyType, + aSandboxFlags, getter_AddRefs(channel)); + if (NS_FAILED(rv)) { + return rv; + } + + if (aLoadGroup) { + rv = channel->SetLoadGroup(aLoadGroup); + NS_ENSURE_SUCCESS(rv, rv); + } + + if (aCallbacks) { + rv = channel->SetNotificationCallbacks(aCallbacks); + NS_ENSURE_SUCCESS(rv, rv); + } + +#ifdef DEBUG + nsLoadFlags channelLoadFlags = 0; + channel->GetLoadFlags(&channelLoadFlags); + // Will be removed when we remove LOAD_REPLACE altogether + // This check is trying to catch protocol handlers that still + // try to set the LOAD_REPLACE flag. + MOZ_DIAGNOSTIC_ASSERT(!(channelLoadFlags & nsIChannel::LOAD_REPLACE)); +#endif + + if (aLoadFlags != nsIRequest::LOAD_NORMAL) { + rv = channel->SetLoadFlags(aLoadFlags); + NS_ENSURE_SUCCESS(rv, rv); + } + + if (aPerformanceStorage || aCookieJarSettings) { + nsCOMPtr<nsILoadInfo> loadInfo = channel->LoadInfo(); + + if (aPerformanceStorage) { + loadInfo->SetPerformanceStorage(aPerformanceStorage); + } + + if (aCookieJarSettings) { + loadInfo->SetCookieJarSettings(aCookieJarSettings); + } + } + + channel.forget(outChannel); + return NS_OK; +} + +nsresult /*NS_NewChannelWithNodeAndTriggeringPrincipal */ +NS_NewChannelWithTriggeringPrincipal( + nsIChannel** outChannel, nsIURI* aUri, nsINode* aLoadingNode, + nsIPrincipal* aTriggeringPrincipal, nsSecurityFlags aSecurityFlags, + nsContentPolicyType aContentPolicyType, + PerformanceStorage* aPerformanceStorage /* = nullptr */, + nsILoadGroup* aLoadGroup /* = nullptr */, + nsIInterfaceRequestor* aCallbacks /* = nullptr */, + nsLoadFlags aLoadFlags /* = nsIRequest::LOAD_NORMAL */, + nsIIOService* aIoService /* = nullptr */) { + MOZ_ASSERT(aLoadingNode); + NS_ASSERTION(aTriggeringPrincipal, + "Can not create channel without a triggering Principal!"); + return NS_NewChannelInternal( + outChannel, aUri, aLoadingNode, aLoadingNode->NodePrincipal(), + aTriggeringPrincipal, Maybe<ClientInfo>(), + Maybe<ServiceWorkerDescriptor>(), aSecurityFlags, aContentPolicyType, + aLoadingNode->OwnerDoc()->CookieJarSettings(), aPerformanceStorage, + aLoadGroup, aCallbacks, aLoadFlags, aIoService); +} + +// See NS_NewChannelInternal for usage and argument description +nsresult NS_NewChannelWithTriggeringPrincipal( + nsIChannel** outChannel, nsIURI* aUri, nsIPrincipal* aLoadingPrincipal, + nsIPrincipal* aTriggeringPrincipal, nsSecurityFlags aSecurityFlags, + nsContentPolicyType aContentPolicyType, + nsICookieJarSettings* aCookieJarSettings /* = nullptr */, + PerformanceStorage* aPerformanceStorage /* = nullptr */, + nsILoadGroup* aLoadGroup /* = nullptr */, + nsIInterfaceRequestor* aCallbacks /* = nullptr */, + nsLoadFlags aLoadFlags /* = nsIRequest::LOAD_NORMAL */, + nsIIOService* aIoService /* = nullptr */) { + NS_ASSERTION(aLoadingPrincipal, + "Can not create channel without a loading Principal!"); + return NS_NewChannelInternal( + outChannel, aUri, + nullptr, // aLoadingNode + aLoadingPrincipal, aTriggeringPrincipal, Maybe<ClientInfo>(), + Maybe<ServiceWorkerDescriptor>(), aSecurityFlags, aContentPolicyType, + aCookieJarSettings, aPerformanceStorage, aLoadGroup, aCallbacks, + aLoadFlags, aIoService); +} + +// See NS_NewChannelInternal for usage and argument description +nsresult NS_NewChannelWithTriggeringPrincipal( + nsIChannel** outChannel, nsIURI* aUri, nsIPrincipal* aLoadingPrincipal, + nsIPrincipal* aTriggeringPrincipal, const ClientInfo& aLoadingClientInfo, + const Maybe<ServiceWorkerDescriptor>& aController, + nsSecurityFlags aSecurityFlags, nsContentPolicyType aContentPolicyType, + nsICookieJarSettings* aCookieJarSettings /* = nullptr */, + PerformanceStorage* aPerformanceStorage /* = nullptr */, + nsILoadGroup* aLoadGroup /* = nullptr */, + nsIInterfaceRequestor* aCallbacks /* = nullptr */, + nsLoadFlags aLoadFlags /* = nsIRequest::LOAD_NORMAL */, + nsIIOService* aIoService /* = nullptr */) { + AssertLoadingPrincipalAndClientInfoMatch( + aLoadingPrincipal, aLoadingClientInfo, aContentPolicyType); + + Maybe<ClientInfo> loadingClientInfo; + loadingClientInfo.emplace(aLoadingClientInfo); + + return NS_NewChannelInternal( + outChannel, aUri, + nullptr, // aLoadingNode + aLoadingPrincipal, aTriggeringPrincipal, loadingClientInfo, aController, + aSecurityFlags, aContentPolicyType, aCookieJarSettings, + aPerformanceStorage, aLoadGroup, aCallbacks, aLoadFlags, aIoService); +} + +nsresult NS_NewChannel(nsIChannel** outChannel, nsIURI* aUri, + nsINode* aLoadingNode, nsSecurityFlags aSecurityFlags, + nsContentPolicyType aContentPolicyType, + PerformanceStorage* aPerformanceStorage /* = nullptr */, + nsILoadGroup* aLoadGroup /* = nullptr */, + nsIInterfaceRequestor* aCallbacks /* = nullptr */, + nsLoadFlags aLoadFlags /* = nsIRequest::LOAD_NORMAL */, + nsIIOService* aIoService /* = nullptr */, + uint32_t aSandboxFlags /* = 0 */) { + NS_ASSERTION(aLoadingNode, "Can not create channel without a loading Node!"); + return NS_NewChannelInternal( + outChannel, aUri, aLoadingNode, aLoadingNode->NodePrincipal(), + nullptr, // aTriggeringPrincipal + Maybe<ClientInfo>(), Maybe<ServiceWorkerDescriptor>(), aSecurityFlags, + aContentPolicyType, aLoadingNode->OwnerDoc()->CookieJarSettings(), + aPerformanceStorage, aLoadGroup, aCallbacks, aLoadFlags, aIoService, + aSandboxFlags); +} + +nsresult NS_GetIsDocumentChannel(nsIChannel* aChannel, bool* aIsDocument) { + // Check if this channel is going to be used to create a document. If it has + // LOAD_DOCUMENT_URI set it is trivially creating a document. If + // LOAD_HTML_OBJECT_DATA is set it may or may not be used to create a + // document, depending on its MIME type. + + if (!aChannel || !aIsDocument) { + return NS_ERROR_NULL_POINTER; + } + *aIsDocument = false; + nsLoadFlags loadFlags; + nsresult rv = aChannel->GetLoadFlags(&loadFlags); + if (NS_FAILED(rv)) { + return rv; + } + if (loadFlags & nsIChannel::LOAD_DOCUMENT_URI) { + *aIsDocument = true; + return NS_OK; + } + if (!(loadFlags & nsIRequest::LOAD_HTML_OBJECT_DATA)) { + *aIsDocument = false; + return NS_OK; + } + nsAutoCString mimeType; + rv = aChannel->GetContentType(mimeType); + if (NS_FAILED(rv)) { + return rv; + } + if (nsContentUtils::HtmlObjectContentTypeForMIMEType( + mimeType, false, nullptr) == nsIObjectLoadingContent::TYPE_DOCUMENT) { + *aIsDocument = true; + return NS_OK; + } + *aIsDocument = false; + return NS_OK; +} + +nsresult NS_MakeAbsoluteURI(nsACString& result, const nsACString& spec, + nsIURI* baseURI) { + nsresult rv; + if (!baseURI) { + NS_WARNING("It doesn't make sense to not supply a base URI"); + result = spec; + rv = NS_OK; + } else if (spec.IsEmpty()) + rv = baseURI->GetSpec(result); + else + rv = baseURI->Resolve(spec, result); + return rv; +} + +nsresult NS_MakeAbsoluteURI(char** result, const char* spec, nsIURI* baseURI) { + nsresult rv; + nsAutoCString resultBuf; + rv = NS_MakeAbsoluteURI(resultBuf, nsDependentCString(spec), baseURI); + if (NS_SUCCEEDED(rv)) { + *result = ToNewCString(resultBuf, mozilla::fallible); + if (!*result) rv = NS_ERROR_OUT_OF_MEMORY; + } + return rv; +} + +nsresult NS_MakeAbsoluteURI(nsAString& result, const nsAString& spec, + nsIURI* baseURI) { + nsresult rv; + if (!baseURI) { + NS_WARNING("It doesn't make sense to not supply a base URI"); + result = spec; + rv = NS_OK; + } else { + nsAutoCString resultBuf; + if (spec.IsEmpty()) + rv = baseURI->GetSpec(resultBuf); + else + rv = baseURI->Resolve(NS_ConvertUTF16toUTF8(spec), resultBuf); + if (NS_SUCCEEDED(rv)) CopyUTF8toUTF16(resultBuf, result); + } + return rv; +} + +int32_t NS_GetDefaultPort(const char* scheme, + nsIIOService* ioService /* = nullptr */) { + nsresult rv; + + // Getting the default port through the protocol handler has a lot of XPCOM + // overhead involved. We optimize the protocols that matter for Web pages + // (HTTP and HTTPS) by hardcoding their default ports here. + if (strncmp(scheme, "http", 4) == 0) { + if (scheme[4] == 's' && scheme[5] == '\0') { + return 443; + } + if (scheme[4] == '\0') { + return 80; + } + } + + nsCOMPtr<nsIIOService> grip; + net_EnsureIOService(&ioService, grip); + if (!ioService) return -1; + + nsCOMPtr<nsIProtocolHandler> handler; + rv = ioService->GetProtocolHandler(scheme, getter_AddRefs(handler)); + if (NS_FAILED(rv)) return -1; + int32_t port; + rv = handler->GetDefaultPort(&port); + return NS_SUCCEEDED(rv) ? port : -1; +} + +/** + * This function is a helper function to apply the ToAscii conversion + * to a string + */ +bool NS_StringToACE(const nsACString& idn, nsACString& result) { + nsCOMPtr<nsIIDNService> idnSrv = do_GetService(NS_IDNSERVICE_CONTRACTID); + if (!idnSrv) return false; + nsresult rv = idnSrv->ConvertUTF8toACE(idn, result); + if (NS_FAILED(rv)) return false; + + return true; +} + +int32_t NS_GetRealPort(nsIURI* aURI) { + int32_t port; + nsresult rv = aURI->GetPort(&port); + if (NS_FAILED(rv)) return -1; + + if (port != -1) return port; // explicitly specified + + // Otherwise, we have to get the default port from the protocol handler + + // Need the scheme first + nsAutoCString scheme; + rv = aURI->GetScheme(scheme); + if (NS_FAILED(rv)) return -1; + + return NS_GetDefaultPort(scheme.get()); +} + +nsresult NS_NewInputStreamChannelInternal( + nsIChannel** outChannel, nsIURI* aUri, + already_AddRefed<nsIInputStream> aStream, const nsACString& aContentType, + const nsACString& aContentCharset, nsILoadInfo* aLoadInfo) { + nsresult rv; + nsCOMPtr<nsIInputStreamChannel> isc = + do_CreateInstance(NS_INPUTSTREAMCHANNEL_CONTRACTID, &rv); + NS_ENSURE_SUCCESS(rv, rv); + rv = isc->SetURI(aUri); + NS_ENSURE_SUCCESS(rv, rv); + + nsCOMPtr<nsIInputStream> stream = std::move(aStream); + rv = isc->SetContentStream(stream); + NS_ENSURE_SUCCESS(rv, rv); + + nsCOMPtr<nsIChannel> channel = do_QueryInterface(isc, &rv); + NS_ENSURE_SUCCESS(rv, rv); + + if (!aContentType.IsEmpty()) { + rv = channel->SetContentType(aContentType); + NS_ENSURE_SUCCESS(rv, rv); + } + + if (!aContentCharset.IsEmpty()) { + rv = channel->SetContentCharset(aContentCharset); + NS_ENSURE_SUCCESS(rv, rv); + } + + MOZ_ASSERT(aLoadInfo, "need a loadinfo to create a inputstreamchannel"); + channel->SetLoadInfo(aLoadInfo); + + // If we're sandboxed, make sure to clear any owner the channel + // might already have. + if (aLoadInfo && aLoadInfo->GetLoadingSandboxed()) { + channel->SetOwner(nullptr); + } + + channel.forget(outChannel); + return NS_OK; +} + +nsresult NS_NewInputStreamChannelInternal( + nsIChannel** outChannel, nsIURI* aUri, + already_AddRefed<nsIInputStream> aStream, const nsACString& aContentType, + const nsACString& aContentCharset, nsINode* aLoadingNode, + nsIPrincipal* aLoadingPrincipal, nsIPrincipal* aTriggeringPrincipal, + nsSecurityFlags aSecurityFlags, nsContentPolicyType aContentPolicyType) { + nsCOMPtr<nsILoadInfo> loadInfo = new mozilla::net::LoadInfo( + aLoadingPrincipal, aTriggeringPrincipal, aLoadingNode, aSecurityFlags, + aContentPolicyType); + if (!loadInfo) { + return NS_ERROR_UNEXPECTED; + } + + nsCOMPtr<nsIInputStream> stream = std::move(aStream); + + return NS_NewInputStreamChannelInternal(outChannel, aUri, stream.forget(), + aContentType, aContentCharset, + loadInfo); +} + +nsresult NS_NewInputStreamChannel( + nsIChannel** outChannel, nsIURI* aUri, + already_AddRefed<nsIInputStream> aStream, nsIPrincipal* aLoadingPrincipal, + nsSecurityFlags aSecurityFlags, nsContentPolicyType aContentPolicyType, + const nsACString& aContentType /* = ""_ns */, + const nsACString& aContentCharset /* = ""_ns */) { + nsCOMPtr<nsIInputStream> stream = aStream; + return NS_NewInputStreamChannelInternal(outChannel, aUri, stream.forget(), + aContentType, aContentCharset, + nullptr, // aLoadingNode + aLoadingPrincipal, + nullptr, // aTriggeringPrincipal + aSecurityFlags, aContentPolicyType); +} + +nsresult NS_NewInputStreamChannelInternal(nsIChannel** outChannel, nsIURI* aUri, + const nsAString& aData, + const nsACString& aContentType, + nsILoadInfo* aLoadInfo, + bool aIsSrcdocChannel /* = false */) { + nsresult rv; + nsCOMPtr<nsIStringInputStream> stream; + stream = do_CreateInstance(NS_STRINGINPUTSTREAM_CONTRACTID, &rv); + NS_ENSURE_SUCCESS(rv, rv); + + uint32_t len; + char* utf8Bytes = ToNewUTF8String(aData, &len); + rv = stream->AdoptData(utf8Bytes, len); + + nsCOMPtr<nsIChannel> channel; + rv = NS_NewInputStreamChannelInternal(getter_AddRefs(channel), aUri, + stream.forget(), aContentType, + "UTF-8"_ns, aLoadInfo); + + NS_ENSURE_SUCCESS(rv, rv); + + if (aIsSrcdocChannel) { + nsCOMPtr<nsIInputStreamChannel> inStrmChan = do_QueryInterface(channel); + NS_ENSURE_TRUE(inStrmChan, NS_ERROR_FAILURE); + inStrmChan->SetSrcdocData(aData); + } + channel.forget(outChannel); + return NS_OK; +} + +nsresult NS_NewInputStreamChannelInternal( + nsIChannel** outChannel, nsIURI* aUri, const nsAString& aData, + const nsACString& aContentType, nsINode* aLoadingNode, + nsIPrincipal* aLoadingPrincipal, nsIPrincipal* aTriggeringPrincipal, + nsSecurityFlags aSecurityFlags, nsContentPolicyType aContentPolicyType, + bool aIsSrcdocChannel /* = false */) { + nsCOMPtr<nsILoadInfo> loadInfo = new mozilla::net::LoadInfo( + aLoadingPrincipal, aTriggeringPrincipal, aLoadingNode, aSecurityFlags, + aContentPolicyType); + return NS_NewInputStreamChannelInternal(outChannel, aUri, aData, aContentType, + loadInfo, aIsSrcdocChannel); +} + +nsresult NS_NewInputStreamChannel(nsIChannel** outChannel, nsIURI* aUri, + const nsAString& aData, + const nsACString& aContentType, + nsIPrincipal* aLoadingPrincipal, + nsSecurityFlags aSecurityFlags, + nsContentPolicyType aContentPolicyType, + bool aIsSrcdocChannel /* = false */) { + return NS_NewInputStreamChannelInternal(outChannel, aUri, aData, aContentType, + nullptr, // aLoadingNode + aLoadingPrincipal, + nullptr, // aTriggeringPrincipal + aSecurityFlags, aContentPolicyType, + aIsSrcdocChannel); +} + +nsresult NS_NewInputStreamPump( + nsIInputStreamPump** aResult, already_AddRefed<nsIInputStream> aStream, + uint32_t aSegsize /* = 0 */, uint32_t aSegcount /* = 0 */, + bool aCloseWhenDone /* = false */, + nsIEventTarget* aMainThreadTarget /* = nullptr */) { + nsCOMPtr<nsIInputStream> stream = std::move(aStream); + + nsresult rv; + nsCOMPtr<nsIInputStreamPump> pump = + do_CreateInstance(NS_INPUTSTREAMPUMP_CONTRACTID, &rv); + if (NS_SUCCEEDED(rv)) { + rv = pump->Init(stream, aSegsize, aSegcount, aCloseWhenDone, + aMainThreadTarget); + if (NS_SUCCEEDED(rv)) { + *aResult = nullptr; + pump.swap(*aResult); + } + } + return rv; +} + +nsresult NS_NewLoadGroup(nsILoadGroup** result, nsIRequestObserver* obs) { + nsresult rv; + nsCOMPtr<nsILoadGroup> group = + do_CreateInstance(NS_LOADGROUP_CONTRACTID, &rv); + if (NS_SUCCEEDED(rv)) { + rv = group->SetGroupObserver(obs); + if (NS_SUCCEEDED(rv)) { + *result = nullptr; + group.swap(*result); + } + } + return rv; +} + +bool NS_IsReasonableHTTPHeaderValue(const nsACString& aValue) { + return mozilla::net::nsHttp::IsReasonableHeaderValue(aValue); +} + +bool NS_IsValidHTTPToken(const nsACString& aToken) { + return mozilla::net::nsHttp::IsValidToken(aToken); +} + +void NS_TrimHTTPWhitespace(const nsACString& aSource, nsACString& aDest) { + mozilla::net::nsHttp::TrimHTTPWhitespace(aSource, aDest); +} + +nsresult NS_NewLoadGroup(nsILoadGroup** aResult, nsIPrincipal* aPrincipal) { + using mozilla::LoadContext; + nsresult rv; + + nsCOMPtr<nsILoadGroup> group = + do_CreateInstance(NS_LOADGROUP_CONTRACTID, &rv); + NS_ENSURE_SUCCESS(rv, rv); + + RefPtr<LoadContext> loadContext = new LoadContext(aPrincipal); + rv = group->SetNotificationCallbacks(loadContext); + NS_ENSURE_SUCCESS(rv, rv); + + group.forget(aResult); + return rv; +} + +bool NS_LoadGroupMatchesPrincipal(nsILoadGroup* aLoadGroup, + nsIPrincipal* aPrincipal) { + if (!aPrincipal) { + return false; + } + + // If this is a null principal then the load group doesn't really matter. + // The principal will not be allowed to perform any actions that actually + // use the load group. Unconditionally treat null principals as a match. + if (aPrincipal->GetIsNullPrincipal()) { + return true; + } + + if (!aLoadGroup) { + return false; + } + + nsCOMPtr<nsILoadContext> loadContext; + NS_QueryNotificationCallbacks(nullptr, aLoadGroup, NS_GET_IID(nsILoadContext), + getter_AddRefs(loadContext)); + NS_ENSURE_TRUE(loadContext, false); + + return true; +} + +nsresult NS_NewDownloader(nsIStreamListener** result, + nsIDownloadObserver* observer, + nsIFile* downloadLocation /* = nullptr */) { + nsresult rv; + nsCOMPtr<nsIDownloader> downloader = + do_CreateInstance(NS_DOWNLOADER_CONTRACTID, &rv); + if (NS_SUCCEEDED(rv)) { + rv = downloader->Init(observer, downloadLocation); + if (NS_SUCCEEDED(rv)) { + downloader.forget(result); + } + } + return rv; +} + +nsresult NS_NewIncrementalStreamLoader( + nsIIncrementalStreamLoader** result, + nsIIncrementalStreamLoaderObserver* observer) { + nsresult rv; + nsCOMPtr<nsIIncrementalStreamLoader> loader = + do_CreateInstance(NS_INCREMENTALSTREAMLOADER_CONTRACTID, &rv); + if (NS_SUCCEEDED(rv)) { + rv = loader->Init(observer); + if (NS_SUCCEEDED(rv)) { + *result = nullptr; + loader.swap(*result); + } + } + return rv; +} + +nsresult NS_NewStreamLoader( + nsIStreamLoader** result, nsIStreamLoaderObserver* observer, + nsIRequestObserver* requestObserver /* = nullptr */) { + nsresult rv; + nsCOMPtr<nsIStreamLoader> loader = + do_CreateInstance(NS_STREAMLOADER_CONTRACTID, &rv); + if (NS_SUCCEEDED(rv)) { + rv = loader->Init(observer, requestObserver); + if (NS_SUCCEEDED(rv)) { + *result = nullptr; + loader.swap(*result); + } + } + return rv; +} + +nsresult NS_NewStreamLoaderInternal( + nsIStreamLoader** outStream, nsIURI* aUri, + nsIStreamLoaderObserver* aObserver, nsINode* aLoadingNode, + nsIPrincipal* aLoadingPrincipal, nsSecurityFlags aSecurityFlags, + nsContentPolicyType aContentPolicyType, + nsILoadGroup* aLoadGroup /* = nullptr */, + nsIInterfaceRequestor* aCallbacks /* = nullptr */, + nsLoadFlags aLoadFlags /* = nsIRequest::LOAD_NORMAL */) { + nsCOMPtr<nsIChannel> channel; + nsresult rv = NS_NewChannelInternal( + getter_AddRefs(channel), aUri, aLoadingNode, aLoadingPrincipal, + nullptr, // aTriggeringPrincipal + Maybe<ClientInfo>(), Maybe<ServiceWorkerDescriptor>(), aSecurityFlags, + aContentPolicyType, + nullptr, // nsICookieJarSettings + nullptr, // PerformanceStorage + aLoadGroup, aCallbacks, aLoadFlags); + + NS_ENSURE_SUCCESS(rv, rv); + rv = NS_NewStreamLoader(outStream, aObserver); + NS_ENSURE_SUCCESS(rv, rv); + return channel->AsyncOpen(*outStream); +} + +nsresult NS_NewStreamLoader( + nsIStreamLoader** outStream, nsIURI* aUri, + nsIStreamLoaderObserver* aObserver, nsINode* aLoadingNode, + nsSecurityFlags aSecurityFlags, nsContentPolicyType aContentPolicyType, + nsILoadGroup* aLoadGroup /* = nullptr */, + nsIInterfaceRequestor* aCallbacks /* = nullptr */, + nsLoadFlags aLoadFlags /* = nsIRequest::LOAD_NORMAL */) { + NS_ASSERTION(aLoadingNode, + "Can not create stream loader without a loading Node!"); + return NS_NewStreamLoaderInternal( + outStream, aUri, aObserver, aLoadingNode, aLoadingNode->NodePrincipal(), + aSecurityFlags, aContentPolicyType, aLoadGroup, aCallbacks, aLoadFlags); +} + +nsresult NS_NewStreamLoader( + nsIStreamLoader** outStream, nsIURI* aUri, + nsIStreamLoaderObserver* aObserver, nsIPrincipal* aLoadingPrincipal, + nsSecurityFlags aSecurityFlags, nsContentPolicyType aContentPolicyType, + nsILoadGroup* aLoadGroup /* = nullptr */, + nsIInterfaceRequestor* aCallbacks /* = nullptr */, + nsLoadFlags aLoadFlags /* = nsIRequest::LOAD_NORMAL */) { + return NS_NewStreamLoaderInternal(outStream, aUri, aObserver, + nullptr, // aLoadingNode + aLoadingPrincipal, aSecurityFlags, + aContentPolicyType, aLoadGroup, aCallbacks, + aLoadFlags); +} + +nsresult NS_NewSyncStreamListener(nsIStreamListener** result, + nsIInputStream** stream) { + nsCOMPtr<nsISyncStreamListener> listener = nsSyncStreamListener::Create(); + if (listener) { + nsresult rv = listener->GetInputStream(stream); + if (NS_SUCCEEDED(rv)) { + listener.forget(result); + } + return rv; + } + return NS_ERROR_FAILURE; +} + +nsresult NS_ImplementChannelOpen(nsIChannel* channel, nsIInputStream** result) { + nsCOMPtr<nsIStreamListener> listener; + nsCOMPtr<nsIInputStream> stream; + nsresult rv = NS_NewSyncStreamListener(getter_AddRefs(listener), + getter_AddRefs(stream)); + NS_ENSURE_SUCCESS(rv, rv); + + rv = NS_MaybeOpenChannelUsingAsyncOpen(channel, listener); + NS_ENSURE_SUCCESS(rv, rv); + + uint64_t n; + // block until the initial response is received or an error occurs. + rv = stream->Available(&n); + NS_ENSURE_SUCCESS(rv, rv); + + *result = nullptr; + stream.swap(*result); + + return NS_OK; +} + +nsresult NS_NewRequestObserverProxy(nsIRequestObserver** result, + nsIRequestObserver* observer, + nsISupports* context) { + nsCOMPtr<nsIRequestObserverProxy> proxy = new nsRequestObserverProxy(); + nsresult rv = proxy->Init(observer, context); + if (NS_SUCCEEDED(rv)) { + proxy.forget(result); + } + return rv; +} + +nsresult NS_NewSimpleStreamListener( + nsIStreamListener** result, nsIOutputStream* sink, + nsIRequestObserver* observer /* = nullptr */) { + nsresult rv; + nsCOMPtr<nsISimpleStreamListener> listener = + do_CreateInstance(NS_SIMPLESTREAMLISTENER_CONTRACTID, &rv); + if (NS_SUCCEEDED(rv)) { + rv = listener->Init(sink, observer); + if (NS_SUCCEEDED(rv)) { + listener.forget(result); + } + } + return rv; +} + +nsresult NS_CheckPortSafety(int32_t port, const char* scheme, + nsIIOService* ioService /* = nullptr */) { + nsresult rv; + nsCOMPtr<nsIIOService> grip; + rv = net_EnsureIOService(&ioService, grip); + if (ioService) { + bool allow; + rv = ioService->AllowPort(port, scheme, &allow); + if (NS_SUCCEEDED(rv) && !allow) { + NS_WARNING("port blocked"); + rv = NS_ERROR_PORT_ACCESS_NOT_ALLOWED; + } + } + return rv; +} + +nsresult NS_CheckPortSafety(nsIURI* uri) { + int32_t port; + nsresult rv = uri->GetPort(&port); + if (NS_FAILED(rv) || port == -1) // port undefined or default-valued + return NS_OK; + nsAutoCString scheme; + uri->GetScheme(scheme); + return NS_CheckPortSafety(port, scheme.get()); +} + +nsresult NS_NewProxyInfo(const nsACString& type, const nsACString& host, + int32_t port, uint32_t flags, nsIProxyInfo** result) { + nsresult rv; + nsCOMPtr<nsIProtocolProxyService> pps = + do_GetService(NS_PROTOCOLPROXYSERVICE_CONTRACTID, &rv); + if (NS_SUCCEEDED(rv)) + rv = pps->NewProxyInfo(type, host, port, ""_ns, ""_ns, flags, UINT32_MAX, + nullptr, result); + return rv; +} + +nsresult NS_GetFileProtocolHandler(nsIFileProtocolHandler** result, + nsIIOService* ioService /* = nullptr */) { + nsresult rv; + nsCOMPtr<nsIIOService> grip; + rv = net_EnsureIOService(&ioService, grip); + if (ioService) { + nsCOMPtr<nsIProtocolHandler> handler; + rv = ioService->GetProtocolHandler("file", getter_AddRefs(handler)); + if (NS_SUCCEEDED(rv)) rv = CallQueryInterface(handler, result); + } + return rv; +} + +nsresult NS_GetFileFromURLSpec(const nsACString& inURL, nsIFile** result, + nsIIOService* ioService /* = nullptr */) { + nsresult rv; + nsCOMPtr<nsIFileProtocolHandler> fileHandler; + rv = NS_GetFileProtocolHandler(getter_AddRefs(fileHandler), ioService); + if (NS_SUCCEEDED(rv)) rv = fileHandler->GetFileFromURLSpec(inURL, result); + return rv; +} + +nsresult NS_GetURLSpecFromFile(nsIFile* file, nsACString& url, + nsIIOService* ioService /* = nullptr */) { + nsresult rv; + nsCOMPtr<nsIFileProtocolHandler> fileHandler; + rv = NS_GetFileProtocolHandler(getter_AddRefs(fileHandler), ioService); + if (NS_SUCCEEDED(rv)) rv = fileHandler->GetURLSpecFromFile(file, url); + return rv; +} + +nsresult NS_GetURLSpecFromActualFile(nsIFile* file, nsACString& url, + nsIIOService* ioService /* = nullptr */) { + nsresult rv; + nsCOMPtr<nsIFileProtocolHandler> fileHandler; + rv = NS_GetFileProtocolHandler(getter_AddRefs(fileHandler), ioService); + if (NS_SUCCEEDED(rv)) rv = fileHandler->GetURLSpecFromActualFile(file, url); + return rv; +} + +nsresult NS_GetURLSpecFromDir(nsIFile* file, nsACString& url, + nsIIOService* ioService /* = nullptr */) { + nsresult rv; + nsCOMPtr<nsIFileProtocolHandler> fileHandler; + rv = NS_GetFileProtocolHandler(getter_AddRefs(fileHandler), ioService); + if (NS_SUCCEEDED(rv)) rv = fileHandler->GetURLSpecFromDir(file, url); + return rv; +} + +void NS_GetReferrerFromChannel(nsIChannel* channel, nsIURI** referrer) { + *referrer = nullptr; + + nsCOMPtr<nsIPropertyBag2> props(do_QueryInterface(channel)); + if (props) { + // We have to check for a property on a property bag because the + // referrer may be empty for security reasons (for example, when loading + // an http page with an https referrer). + nsresult rv = props->GetPropertyAsInterface( + u"docshell.internalReferrer"_ns, NS_GET_IID(nsIURI), + reinterpret_cast<void**>(referrer)); + if (NS_SUCCEEDED(rv)) { + return; + } + } + + // if that didn't work, we can still try to get the referrer from the + // nsIHttpChannel (if we can QI to it) + nsCOMPtr<nsIHttpChannel> chan(do_QueryInterface(channel)); + if (!chan) { + return; + } + + nsCOMPtr<nsIReferrerInfo> referrerInfo = chan->GetReferrerInfo(); + if (!referrerInfo) { + return; + } + + referrerInfo->GetOriginalReferrer(referrer); +} + +already_AddRefed<nsINetUtil> do_GetNetUtil(nsresult* error /* = 0 */) { + nsCOMPtr<nsIIOService> io = mozilla::services::GetIOService(); + nsCOMPtr<nsINetUtil> util; + if (io) util = do_QueryInterface(io); + + if (error) *error = !!util ? NS_OK : NS_ERROR_FAILURE; + return util.forget(); +} + +nsresult NS_ParseRequestContentType(const nsACString& rawContentType, + nsCString& contentType, + nsCString& contentCharset) { + // contentCharset is left untouched if not present in rawContentType + nsresult rv; + nsCOMPtr<nsINetUtil> util = do_GetNetUtil(&rv); + NS_ENSURE_SUCCESS(rv, rv); + nsCString charset; + bool hadCharset; + rv = util->ParseRequestContentType(rawContentType, charset, &hadCharset, + contentType); + if (NS_SUCCEEDED(rv) && hadCharset) contentCharset = charset; + return rv; +} + +nsresult NS_ParseResponseContentType(const nsACString& rawContentType, + nsCString& contentType, + nsCString& contentCharset) { + // contentCharset is left untouched if not present in rawContentType + nsresult rv; + nsCOMPtr<nsINetUtil> util = do_GetNetUtil(&rv); + NS_ENSURE_SUCCESS(rv, rv); + nsCString charset; + bool hadCharset; + rv = util->ParseResponseContentType(rawContentType, charset, &hadCharset, + contentType); + if (NS_SUCCEEDED(rv) && hadCharset) contentCharset = charset; + return rv; +} + +nsresult NS_ExtractCharsetFromContentType(const nsACString& rawContentType, + nsCString& contentCharset, + bool* hadCharset, + int32_t* charsetStart, + int32_t* charsetEnd) { + // contentCharset is left untouched if not present in rawContentType + nsresult rv; + nsCOMPtr<nsINetUtil> util = do_GetNetUtil(&rv); + NS_ENSURE_SUCCESS(rv, rv); + + return util->ExtractCharsetFromContentType( + rawContentType, contentCharset, charsetStart, charsetEnd, hadCharset); +} + +nsresult NS_NewAtomicFileOutputStream(nsIOutputStream** result, nsIFile* file, + int32_t ioFlags /* = -1 */, + int32_t perm /* = -1 */, + int32_t behaviorFlags /* = 0 */) { + nsresult rv; + nsCOMPtr<nsIFileOutputStream> out = + do_CreateInstance(NS_ATOMICLOCALFILEOUTPUTSTREAM_CONTRACTID, &rv); + if (NS_SUCCEEDED(rv)) { + rv = out->Init(file, ioFlags, perm, behaviorFlags); + if (NS_SUCCEEDED(rv)) out.forget(result); + } + return rv; +} + +nsresult NS_NewSafeLocalFileOutputStream(nsIOutputStream** result, + nsIFile* file, + int32_t ioFlags /* = -1 */, + int32_t perm /* = -1 */, + int32_t behaviorFlags /* = 0 */) { + nsresult rv; + nsCOMPtr<nsIFileOutputStream> out = + do_CreateInstance(NS_SAFELOCALFILEOUTPUTSTREAM_CONTRACTID, &rv); + if (NS_SUCCEEDED(rv)) { + rv = out->Init(file, ioFlags, perm, behaviorFlags); + if (NS_SUCCEEDED(rv)) out.forget(result); + } + return rv; +} + +nsresult NS_NewLocalFileStream(nsIFileStream** result, nsIFile* file, + int32_t ioFlags /* = -1 */, + int32_t perm /* = -1 */, + int32_t behaviorFlags /* = 0 */) { + nsCOMPtr<nsIFileStream> stream = new nsFileStream(); + nsresult rv = stream->Init(file, ioFlags, perm, behaviorFlags); + if (NS_SUCCEEDED(rv)) { + stream.forget(result); + } + return rv; +} + +mozilla::Result<nsCOMPtr<nsIFileStream>, nsresult> NS_NewLocalFileStream( + nsIFile* file, int32_t ioFlags /* = -1 */, int32_t perm /* = -1 */, + int32_t behaviorFlags /* = 0 */) { + nsCOMPtr<nsIFileStream> stream; + const nsresult rv = NS_NewLocalFileStream(getter_AddRefs(stream), file, + ioFlags, perm, behaviorFlags); + if (NS_SUCCEEDED(rv)) { + return stream; + } + return Err(rv); +} + +nsresult NS_NewBufferedOutputStream( + nsIOutputStream** aResult, already_AddRefed<nsIOutputStream> aOutputStream, + uint32_t aBufferSize) { + nsCOMPtr<nsIOutputStream> outputStream = std::move(aOutputStream); + + nsresult rv; + nsCOMPtr<nsIBufferedOutputStream> out = + do_CreateInstance(NS_BUFFEREDOUTPUTSTREAM_CONTRACTID, &rv); + if (NS_SUCCEEDED(rv)) { + rv = out->Init(outputStream, aBufferSize); + if (NS_SUCCEEDED(rv)) { + out.forget(aResult); + } + } + return rv; +} + +[[nodiscard]] nsresult NS_NewBufferedInputStream( + nsIInputStream** aResult, already_AddRefed<nsIInputStream> aInputStream, + uint32_t aBufferSize) { + nsCOMPtr<nsIInputStream> inputStream = std::move(aInputStream); + + nsCOMPtr<nsIBufferedInputStream> in; + nsresult rv = nsBufferedInputStream::Create( + nullptr, NS_GET_IID(nsIBufferedInputStream), getter_AddRefs(in)); + if (NS_SUCCEEDED(rv)) { + rv = in->Init(inputStream, aBufferSize); + if (NS_SUCCEEDED(rv)) { + *aResult = static_cast<nsBufferedInputStream*>(in.get()) + ->GetInputStream() + .take(); + } + } + return rv; +} + +Result<nsCOMPtr<nsIInputStream>, nsresult> NS_NewBufferedInputStream( + already_AddRefed<nsIInputStream> aInputStream, uint32_t aBufferSize) { + nsCOMPtr<nsIInputStream> stream; + const nsresult rv = NS_NewBufferedInputStream( + getter_AddRefs(stream), std::move(aInputStream), aBufferSize); + if (NS_SUCCEEDED(rv)) { + return stream; + } + return Err(rv); +} + +namespace { + +#define BUFFER_SIZE 8192 + +class BufferWriter final : public nsIInputStreamCallback { + public: + NS_DECL_THREADSAFE_ISUPPORTS + + BufferWriter(nsIInputStream* aInputStream, void* aBuffer, int64_t aCount) + : mMonitor("BufferWriter.mMonitor"), + mInputStream(aInputStream), + mBuffer(aBuffer), + mCount(aCount), + mWrittenData(0), + mBufferType(aBuffer ? eExternal : eInternal), + mBufferSize(0) { + MOZ_ASSERT(aInputStream); + MOZ_ASSERT(aCount == -1 || aCount > 0); + MOZ_ASSERT_IF(mBuffer, aCount > 0); + } + + nsresult Write() { + NS_ASSERT_OWNINGTHREAD(BufferWriter); + + // Let's make the inputStream buffered if it's not. + if (!NS_InputStreamIsBuffered(mInputStream)) { + nsCOMPtr<nsIInputStream> bufferedStream; + nsresult rv = NS_NewBufferedInputStream( + getter_AddRefs(bufferedStream), mInputStream.forget(), BUFFER_SIZE); + NS_ENSURE_SUCCESS(rv, rv); + + mInputStream = bufferedStream; + } + + mAsyncInputStream = do_QueryInterface(mInputStream); + + if (!mAsyncInputStream) { + return WriteSync(); + } + + // Let's use mAsyncInputStream only. + mInputStream = nullptr; + + return WriteAsync(); + } + + uint64_t WrittenData() const { + NS_ASSERT_OWNINGTHREAD(BufferWriter); + return mWrittenData; + } + + void* StealBuffer() { + NS_ASSERT_OWNINGTHREAD(BufferWriter); + MOZ_ASSERT(mBufferType == eInternal); + + void* buffer = mBuffer; + + mBuffer = nullptr; + mBufferSize = 0; + + return buffer; + } + + private: + ~BufferWriter() { + if (mBuffer && mBufferType == eInternal) { + free(mBuffer); + } + + if (mTaskQueue) { + mTaskQueue->BeginShutdown(); + } + } + + nsresult WriteSync() { + NS_ASSERT_OWNINGTHREAD(BufferWriter); + + uint64_t length = (uint64_t)mCount; + + if (mCount == -1) { + nsresult rv = mInputStream->Available(&length); + NS_ENSURE_SUCCESS(rv, rv); + + if (length == 0) { + // nothing to read. + return NS_OK; + } + } + + if (mBufferType == eInternal) { + mBuffer = malloc(length); + if (NS_WARN_IF(!mBuffer)) { + return NS_ERROR_OUT_OF_MEMORY; + } + } + + uint32_t writtenData; + nsresult rv = mInputStream->ReadSegments(NS_CopySegmentToBuffer, mBuffer, + length, &writtenData); + NS_ENSURE_SUCCESS(rv, rv); + + mWrittenData = writtenData; + return NS_OK; + } + + nsresult WriteAsync() { + NS_ASSERT_OWNINGTHREAD(BufferWriter); + + if (mCount > 0 && mBufferType == eInternal) { + mBuffer = malloc(mCount); + if (NS_WARN_IF(!mBuffer)) { + return NS_ERROR_OUT_OF_MEMORY; + } + } + + while (true) { + if (mCount == -1 && !MaybeExpandBufferSize()) { + return NS_ERROR_OUT_OF_MEMORY; + } + + uint64_t offset = mWrittenData; + uint64_t length = mCount == -1 ? BUFFER_SIZE : mCount; + + // Let's try to read data directly. + uint32_t writtenData; + nsresult rv = mAsyncInputStream->ReadSegments( + NS_CopySegmentToBuffer, static_cast<char*>(mBuffer) + offset, length, + &writtenData); + + // Operation completed. Nothing more to read. + if (NS_SUCCEEDED(rv) && writtenData == 0) { + return NS_OK; + } + + // If we succeeded, let's try to read again. + if (NS_SUCCEEDED(rv)) { + mWrittenData += writtenData; + if (mCount != -1) { + MOZ_ASSERT(mCount >= writtenData); + mCount -= writtenData; + + // Is this the end of the reading? + if (mCount == 0) { + return NS_OK; + } + } + + continue; + } + + // Async wait... + if (rv == NS_BASE_STREAM_WOULD_BLOCK) { + rv = MaybeCreateTaskQueue(); + if (NS_WARN_IF(NS_FAILED(rv))) { + return rv; + } + + MonitorAutoLock lock(mMonitor); + + rv = mAsyncInputStream->AsyncWait(this, 0, length, mTaskQueue); + if (NS_WARN_IF(NS_FAILED(rv))) { + return rv; + } + + lock.Wait(); + continue; + } + + // Otherwise, let's propagate the error. + return rv; + } + + MOZ_ASSERT_UNREACHABLE("We should not be here"); + return NS_ERROR_FAILURE; + } + + nsresult MaybeCreateTaskQueue() { + NS_ASSERT_OWNINGTHREAD(BufferWriter); + + if (!mTaskQueue) { + nsCOMPtr<nsIEventTarget> target = + do_GetService(NS_STREAMTRANSPORTSERVICE_CONTRACTID); + if (!target) { + return NS_ERROR_FAILURE; + } + + mTaskQueue = new TaskQueue(target.forget()); + } + + return NS_OK; + } + + NS_IMETHOD + OnInputStreamReady(nsIAsyncInputStream* aStream) override { + MOZ_ASSERT(!NS_IsMainThread()); + + // We have something to read. Let's unlock the main-thread. + MonitorAutoLock lock(mMonitor); + lock.Notify(); + return NS_OK; + } + + bool MaybeExpandBufferSize() { + NS_ASSERT_OWNINGTHREAD(BufferWriter); + + MOZ_ASSERT(mCount == -1); + + if (mBufferSize >= mWrittenData + BUFFER_SIZE) { + // The buffer is big enough. + return true; + } + + CheckedUint32 bufferSize = + std::max<uint32_t>(static_cast<uint32_t>(mWrittenData), BUFFER_SIZE); + while (bufferSize.isValid() && + bufferSize.value() < mWrittenData + BUFFER_SIZE) { + bufferSize *= 2; + } + + if (!bufferSize.isValid()) { + return false; + } + + void* buffer = realloc(mBuffer, bufferSize.value()); + if (!buffer) { + return false; + } + + mBuffer = buffer; + mBufferSize = bufferSize.value(); + return true; + } + + // All the members of this class are touched on the owning thread only. The + // monitor is only used to communicate when there is more data to read. + Monitor mMonitor; + + nsCOMPtr<nsIInputStream> mInputStream; + nsCOMPtr<nsIAsyncInputStream> mAsyncInputStream; + + RefPtr<TaskQueue> mTaskQueue; + + void* mBuffer; + int64_t mCount; + uint64_t mWrittenData; + + enum { + // The buffer is allocated internally and this object must release it + // in the DTOR if not stolen. The buffer can be reallocated. + eInternal, + + // The buffer is not owned by this object and it cannot be reallocated. + eExternal, + } mBufferType; + + // The following set if needed for the async read. + uint64_t mBufferSize; +}; + +NS_IMPL_ISUPPORTS(BufferWriter, nsIInputStreamCallback) + +} // anonymous namespace + +nsresult NS_ReadInputStreamToBuffer(nsIInputStream* aInputStream, void** aDest, + int64_t aCount, uint64_t* aWritten) { + MOZ_ASSERT(aInputStream); + MOZ_ASSERT(aCount >= -1); + + uint64_t dummyWritten; + if (!aWritten) { + aWritten = &dummyWritten; + } + + if (aCount == 0) { + *aWritten = 0; + return NS_OK; + } + + // This will take care of allocating and reallocating aDest. + RefPtr<BufferWriter> writer = new BufferWriter(aInputStream, *aDest, aCount); + + nsresult rv = writer->Write(); + NS_ENSURE_SUCCESS(rv, rv); + + *aWritten = writer->WrittenData(); + + if (!*aDest) { + *aDest = writer->StealBuffer(); + } + + return NS_OK; +} + +nsresult NS_ReadInputStreamToString(nsIInputStream* aInputStream, + nsACString& aDest, int64_t aCount, + uint64_t* aWritten) { + uint64_t dummyWritten; + if (!aWritten) { + aWritten = &dummyWritten; + } + + // Nothing to do if aCount is 0. + if (aCount == 0) { + aDest.Truncate(); + *aWritten = 0; + return NS_OK; + } + + // If we have the size, we can pre-allocate the buffer. + if (aCount > 0) { + if (NS_WARN_IF(aCount >= INT32_MAX) || + NS_WARN_IF(!aDest.SetLength(aCount, mozilla::fallible))) { + return NS_ERROR_OUT_OF_MEMORY; + } + + void* dest = aDest.BeginWriting(); + nsresult rv = + NS_ReadInputStreamToBuffer(aInputStream, &dest, aCount, aWritten); + NS_ENSURE_SUCCESS(rv, rv); + + if ((uint64_t)aCount > *aWritten) { + aDest.Truncate(*aWritten); + } + + return NS_OK; + } + + // If the size is unknown, BufferWriter will allocate the buffer. + void* dest = nullptr; + nsresult rv = + NS_ReadInputStreamToBuffer(aInputStream, &dest, aCount, aWritten); + MOZ_ASSERT_IF(NS_FAILED(rv), dest == nullptr); + NS_ENSURE_SUCCESS(rv, rv); + + if (!dest) { + MOZ_ASSERT(*aWritten == 0); + aDest.Truncate(); + return NS_OK; + } + + aDest.Adopt(reinterpret_cast<char*>(dest), *aWritten); + return NS_OK; +} + +nsresult NS_NewURI(nsIURI** result, const nsACString& spec, + NotNull<const Encoding*> encoding, + nsIURI* baseURI /* = nullptr */) { + nsAutoCString charset; + encoding->Name(charset); + return NS_NewURI(result, spec, charset.get(), baseURI); +} + +nsresult NS_NewURI(nsIURI** result, const nsAString& aSpec, + const char* charset /* = nullptr */, + nsIURI* baseURI /* = nullptr */) { + nsAutoCString spec; + if (!AppendUTF16toUTF8(aSpec, spec, mozilla::fallible)) { + return NS_ERROR_OUT_OF_MEMORY; + } + return NS_NewURI(result, spec, charset, baseURI); +} + +nsresult NS_NewURI(nsIURI** result, const nsAString& aSpec, + NotNull<const Encoding*> encoding, + nsIURI* baseURI /* = nullptr */) { + nsAutoCString spec; + if (!AppendUTF16toUTF8(aSpec, spec, mozilla::fallible)) { + return NS_ERROR_OUT_OF_MEMORY; + } + return NS_NewURI(result, spec, encoding, baseURI); +} + +nsresult NS_NewURI(nsIURI** result, const char* spec, + nsIURI* baseURI /* = nullptr */) { + return NS_NewURI(result, nsDependentCString(spec), nullptr, baseURI); +} + +static nsresult NewStandardURI(const nsACString& aSpec, const char* aCharset, + nsIURI* aBaseURI, int32_t aDefaultPort, + nsIURI** aURI) { + nsCOMPtr<nsIURI> base(aBaseURI); + return NS_MutateURI(new nsStandardURL::Mutator()) + .Apply(NS_MutatorMethod(&nsIStandardURLMutator::Init, + nsIStandardURL::URLTYPE_AUTHORITY, aDefaultPort, + nsCString(aSpec), aCharset, base, nullptr)) + .Finalize(aURI); +} + +extern MOZ_THREAD_LOCAL(uint32_t) gTlsURLRecursionCount; + +template <typename T> +class TlsAutoIncrement { + public: + explicit TlsAutoIncrement(T& var) : mVar(var) { + mValue = mVar.get(); + mVar.set(mValue + 1); + } + ~TlsAutoIncrement() { + typename T::Type value = mVar.get(); + MOZ_ASSERT(value == mValue + 1); + mVar.set(value - 1); + } + + typename T::Type value() { return mValue; } + + private: + typename T::Type mValue; + T& mVar; +}; + +nsresult NS_NewURI(nsIURI** aURI, const nsACString& aSpec, + const char* aCharset /* = nullptr */, + nsIURI* aBaseURI /* = nullptr */) { + TlsAutoIncrement<decltype(gTlsURLRecursionCount)> inc(gTlsURLRecursionCount); + if (inc.value() >= MAX_RECURSION_COUNT) { + return NS_ERROR_MALFORMED_URI; + } + + nsAutoCString scheme; + nsresult rv = net_ExtractURLScheme(aSpec, scheme); + if (NS_FAILED(rv)) { + // then aSpec is relative + if (!aBaseURI) { + return NS_ERROR_MALFORMED_URI; + } + + if (!aSpec.IsEmpty() && aSpec[0] == '#') { + // Looks like a reference instead of a fully-specified URI. + // --> initialize |uri| as a clone of |aBaseURI|, with ref appended. + return NS_GetURIWithNewRef(aBaseURI, aSpec, aURI); + } + + rv = aBaseURI->GetScheme(scheme); + if (NS_FAILED(rv)) return rv; + } + + if (scheme.EqualsLiteral("http") || scheme.EqualsLiteral("ws")) { + return NewStandardURI(aSpec, aCharset, aBaseURI, NS_HTTP_DEFAULT_PORT, + aURI); + } + if (scheme.EqualsLiteral("https") || scheme.EqualsLiteral("wss")) { + return NewStandardURI(aSpec, aCharset, aBaseURI, NS_HTTPS_DEFAULT_PORT, + aURI); + } + if (scheme.EqualsLiteral("ftp")) { + return NewStandardURI(aSpec, aCharset, aBaseURI, 21, aURI); + } + if (scheme.EqualsLiteral("ssh")) { + return NewStandardURI(aSpec, aCharset, aBaseURI, 22, aURI); + } + + if (scheme.EqualsLiteral("file")) { + nsAutoCString buf(aSpec); +#if defined(XP_WIN) + buf.Truncate(); + if (!net_NormalizeFileURL(aSpec, buf)) { + buf = aSpec; + } +#endif + + nsCOMPtr<nsIURI> base(aBaseURI); + return NS_MutateURI(new nsStandardURL::Mutator()) + .Apply(NS_MutatorMethod(&nsIFileURLMutator::MarkFileURL)) + .Apply(NS_MutatorMethod(&nsIStandardURLMutator::Init, + nsIStandardURL::URLTYPE_NO_AUTHORITY, -1, buf, + aCharset, base, nullptr)) + .Finalize(aURI); + } + + if (scheme.EqualsLiteral("data")) { + return nsDataHandler::CreateNewURI(aSpec, aCharset, aBaseURI, aURI); + } + + if (scheme.EqualsLiteral("moz-safe-about") || + scheme.EqualsLiteral("page-icon") || scheme.EqualsLiteral("moz") || + scheme.EqualsLiteral("moz-anno") || + scheme.EqualsLiteral("moz-fonttable")) { + return NS_MutateURI(new nsSimpleURI::Mutator()) + .SetSpec(aSpec) + .Finalize(aURI); + } + + if (scheme.EqualsLiteral("chrome")) { + return nsChromeProtocolHandler::CreateNewURI(aSpec, aCharset, aBaseURI, + aURI); + } + + if (scheme.EqualsLiteral("javascript")) { + return nsJSProtocolHandler::CreateNewURI(aSpec, aCharset, aBaseURI, aURI); + } + + if (scheme.EqualsLiteral("blob")) { + return BlobURLProtocolHandler::CreateNewURI(aSpec, aCharset, aBaseURI, + aURI); + } + + if (scheme.EqualsLiteral("view-source")) { + return nsViewSourceHandler::CreateNewURI(aSpec, aCharset, aBaseURI, aURI); + } + + if (scheme.EqualsLiteral("resource")) { + RefPtr<nsResProtocolHandler> handler = nsResProtocolHandler::GetSingleton(); + if (!handler) { + return NS_ERROR_NOT_AVAILABLE; + } + return handler->NewURI(aSpec, aCharset, aBaseURI, aURI); + } + + if (scheme.EqualsLiteral("indexeddb")) { + nsCOMPtr<nsIURI> base(aBaseURI); + return NS_MutateURI(new nsStandardURL::Mutator()) + .Apply(NS_MutatorMethod(&nsIStandardURLMutator::Init, + nsIStandardURL::URLTYPE_AUTHORITY, 0, + nsCString(aSpec), aCharset, base, nullptr)) + .Finalize(aURI); + } + + if (scheme.EqualsLiteral("moz-extension")) { + RefPtr<mozilla::net::ExtensionProtocolHandler> handler = + mozilla::net::ExtensionProtocolHandler::GetSingleton(); + if (!handler) { + return NS_ERROR_NOT_AVAILABLE; + } + return handler->NewURI(aSpec, aCharset, aBaseURI, aURI); + } + + if (scheme.EqualsLiteral("moz-page-thumb")) { + // The moz-page-thumb service runs JS to resolve a URI to a + // storage location, so this should only ever run on the main + // thread. + if (!NS_IsMainThread()) { + return NS_ERROR_NOT_AVAILABLE; + } + + RefPtr<mozilla::net::PageThumbProtocolHandler> handler = + mozilla::net::PageThumbProtocolHandler::GetSingleton(); + if (!handler) { + return NS_ERROR_NOT_AVAILABLE; + } + return handler->NewURI(aSpec, aCharset, aBaseURI, aURI); + } + + if (scheme.EqualsLiteral("about")) { + return nsAboutProtocolHandler::CreateNewURI(aSpec, aCharset, aBaseURI, + aURI); + } + + if (scheme.EqualsLiteral("jar")) { + nsCOMPtr<nsIURI> base(aBaseURI); + return NS_MutateURI(new nsJARURI::Mutator()) + .Apply(NS_MutatorMethod(&nsIJARURIMutator::SetSpecBaseCharset, + nsCString(aSpec), base, aCharset)) + .Finalize(aURI); + } + + if (scheme.EqualsLiteral("moz-icon")) { + return NS_MutateURI(new nsMozIconURI::Mutator()) + .SetSpec(aSpec) + .Finalize(aURI); + } + +#ifdef MOZ_WIDGET_GTK + if (scheme.EqualsLiteral("smb") || scheme.EqualsLiteral("sftp")) { + nsCOMPtr<nsIURI> base(aBaseURI); + return NS_MutateURI(new nsStandardURL::Mutator()) + .Apply(NS_MutatorMethod(&nsIStandardURLMutator::Init, + nsIStandardURL::URLTYPE_STANDARD, -1, + nsCString(aSpec), aCharset, base, nullptr)) + .Finalize(aURI); + } +#endif + + if (scheme.EqualsLiteral("android")) { + nsCOMPtr<nsIURI> base(aBaseURI); + return NS_MutateURI(NS_STANDARDURLMUTATOR_CONTRACTID) + .Apply(NS_MutatorMethod(&nsIStandardURLMutator::Init, + nsIStandardURL::URLTYPE_STANDARD, -1, + nsCString(aSpec), aCharset, base, nullptr)) + .Finalize(aURI); + } + + // web-extensions can add custom protocol implementations with standard URLs + // that have notion of hostname, authority and relative URLs. Below we + // manually check agains set of known protocols schemes until more general + // solution is in place (See Bug 1569733) + if (!StaticPrefs::network_url_useDefaultURI()) { + if (scheme.EqualsLiteral("dweb") || scheme.EqualsLiteral("dat") || + scheme.EqualsLiteral("ipfs") || scheme.EqualsLiteral("ipns") || + scheme.EqualsLiteral("ssb") || scheme.EqualsLiteral("wtp")) { + return NewStandardURI(aSpec, aCharset, aBaseURI, -1, aURI); + } + } + +#if defined(MOZ_THUNDERBIRD) || defined(MOZ_SUITE) + rv = NS_NewMailnewsURI(aURI, aSpec, aCharset, aBaseURI); + if (rv != NS_ERROR_UNKNOWN_PROTOCOL) { + return rv; + } +#endif + + if (aBaseURI) { + nsAutoCString newSpec; + rv = aBaseURI->Resolve(aSpec, newSpec); + NS_ENSURE_SUCCESS(rv, rv); + + nsAutoCString newScheme; + rv = net_ExtractURLScheme(newSpec, newScheme); + if (NS_SUCCEEDED(rv)) { + // The scheme shouldn't really change at this point. + MOZ_DIAGNOSTIC_ASSERT(newScheme == scheme); + } + + if (StaticPrefs::network_url_useDefaultURI()) { + return NS_MutateURI(new DefaultURI::Mutator()) + .SetSpec(newSpec) + .Finalize(aURI); + } + + return NS_MutateURI(new nsSimpleURI::Mutator()) + .SetSpec(newSpec) + .Finalize(aURI); + } + + if (StaticPrefs::network_url_useDefaultURI()) { + return NS_MutateURI(new DefaultURI::Mutator()) + .SetSpec(aSpec) + .Finalize(aURI); + } + + // Falls back to external protocol handler. + return NS_MutateURI(new nsSimpleURI::Mutator()).SetSpec(aSpec).Finalize(aURI); +} + +nsresult NS_GetSanitizedURIStringFromURI(nsIURI* aUri, + nsAString& aSanitizedSpec) { + aSanitizedSpec.Truncate(); + + nsCOMPtr<nsISensitiveInfoHiddenURI> safeUri = do_QueryInterface(aUri); + nsAutoCString cSpec; + nsresult rv; + if (safeUri) { + rv = safeUri->GetSensitiveInfoHiddenSpec(cSpec); + } else { + rv = aUri->GetSpec(cSpec); + } + + if (NS_SUCCEEDED(rv)) { + aSanitizedSpec.Assign(NS_ConvertUTF8toUTF16(cSpec)); + } + return rv; +} + +nsresult NS_LoadPersistentPropertiesFromURISpec( + nsIPersistentProperties** outResult, const nsACString& aSpec) { + nsCOMPtr<nsIURI> uri; + nsresult rv = NS_NewURI(getter_AddRefs(uri), aSpec); + NS_ENSURE_SUCCESS(rv, rv); + + nsCOMPtr<nsIChannel> channel; + rv = NS_NewChannel(getter_AddRefs(channel), uri, + nsContentUtils::GetSystemPrincipal(), + nsILoadInfo::SEC_ALLOW_CROSS_ORIGIN_SEC_CONTEXT_IS_NULL, + nsIContentPolicy::TYPE_OTHER); + NS_ENSURE_SUCCESS(rv, rv); + nsCOMPtr<nsIInputStream> in; + rv = channel->Open(getter_AddRefs(in)); + NS_ENSURE_SUCCESS(rv, rv); + + nsCOMPtr<nsIPersistentProperties> properties = new nsPersistentProperties(); + rv = properties->Load(in); + NS_ENSURE_SUCCESS(rv, rv); + + properties.swap(*outResult); + return NS_OK; +} + +bool NS_UsePrivateBrowsing(nsIChannel* channel) { + OriginAttributes attrs; + bool result = StoragePrincipalHelper::GetOriginAttributes( + channel, attrs, StoragePrincipalHelper::eRegularPrincipal); + NS_ENSURE_TRUE(result, result); + return attrs.mPrivateBrowsingId > 0; +} + +bool NS_HasBeenCrossOrigin(nsIChannel* aChannel, bool aReport) { + nsCOMPtr<nsILoadInfo> loadInfo = aChannel->LoadInfo(); + // TYPE_DOCUMENT loads have a null LoadingPrincipal and can not be cross + // origin. + if (!loadInfo->GetLoadingPrincipal()) { + return false; + } + + // Always treat tainted channels as cross-origin. + if (loadInfo->GetTainting() != LoadTainting::Basic) { + return true; + } + + nsCOMPtr<nsIPrincipal> loadingPrincipal = loadInfo->GetLoadingPrincipal(); + uint32_t mode = loadInfo->GetSecurityMode(); + bool dataInherits = + mode == nsILoadInfo::SEC_REQUIRE_SAME_ORIGIN_INHERITS_SEC_CONTEXT || + mode == nsILoadInfo::SEC_ALLOW_CROSS_ORIGIN_INHERITS_SEC_CONTEXT || + mode == nsILoadInfo::SEC_REQUIRE_CORS_INHERITS_SEC_CONTEXT; + + bool aboutBlankInherits = dataInherits && loadInfo->GetAboutBlankInherits(); + + uint64_t innerWindowID = loadInfo->GetInnerWindowID(); + + for (nsIRedirectHistoryEntry* redirectHistoryEntry : + loadInfo->RedirectChain()) { + nsCOMPtr<nsIPrincipal> principal; + redirectHistoryEntry->GetPrincipal(getter_AddRefs(principal)); + if (!principal) { + return true; + } + + nsCOMPtr<nsIURI> uri; + auto* basePrin = BasePrincipal::Cast(principal); + basePrin->GetURI(getter_AddRefs(uri)); + if (!uri) { + return true; + } + + if (aboutBlankInherits && NS_IsAboutBlank(uri)) { + continue; + } + + nsresult res; + if (aReport) { + res = loadingPrincipal->CheckMayLoadWithReporting(uri, dataInherits, + innerWindowID); + } else { + res = loadingPrincipal->CheckMayLoad(uri, dataInherits); + } + if (NS_FAILED(res)) { + return true; + } + } + + nsCOMPtr<nsIURI> uri; + NS_GetFinalChannelURI(aChannel, getter_AddRefs(uri)); + if (!uri) { + return true; + } + + if (aboutBlankInherits && NS_IsAboutBlank(uri)) { + return false; + } + + nsresult res; + if (aReport) { + res = loadingPrincipal->CheckMayLoadWithReporting(uri, dataInherits, + innerWindowID); + } else { + res = loadingPrincipal->CheckMayLoad(uri, dataInherits); + } + + return NS_FAILED(res); +} + +bool NS_IsSafeMethodNav(nsIChannel* aChannel) { + RefPtr<HttpBaseChannel> baseChan = do_QueryObject(aChannel); + if (!baseChan) { + return false; + } + nsHttpRequestHead* requestHead = baseChan->GetRequestHead(); + if (!requestHead) { + return false; + } + return requestHead->IsSafeMethod(); +} + +bool NS_ShouldCheckAppCache(nsIPrincipal* aPrincipal) { + uint32_t privateBrowsingId = 0; + nsresult rv = aPrincipal->GetPrivateBrowsingId(&privateBrowsingId); + if (NS_SUCCEEDED(rv) && (privateBrowsingId > 0)) { + return false; + } + + nsCOMPtr<nsIOfflineCacheUpdateService> offlineService = + do_GetService("@mozilla.org/offlinecacheupdate-service;1"); + if (!offlineService) { + return false; + } + + bool allowed; + rv = offlineService->OfflineAppAllowed(aPrincipal, &allowed); + return NS_SUCCEEDED(rv) && allowed; +} + +void NS_WrapAuthPrompt(nsIAuthPrompt* aAuthPrompt, + nsIAuthPrompt2** aAuthPrompt2) { + nsCOMPtr<nsIAuthPromptAdapterFactory> factory = + do_GetService(NS_AUTHPROMPT_ADAPTER_FACTORY_CONTRACTID); + if (!factory) return; + + NS_WARNING("Using deprecated nsIAuthPrompt"); + factory->CreateAdapter(aAuthPrompt, aAuthPrompt2); +} + +void NS_QueryAuthPrompt2(nsIInterfaceRequestor* aCallbacks, + nsIAuthPrompt2** aAuthPrompt) { + CallGetInterface(aCallbacks, aAuthPrompt); + if (*aAuthPrompt) return; + + // Maybe only nsIAuthPrompt is provided and we have to wrap it. + nsCOMPtr<nsIAuthPrompt> prompt(do_GetInterface(aCallbacks)); + if (!prompt) return; + + NS_WrapAuthPrompt(prompt, aAuthPrompt); +} + +void NS_QueryAuthPrompt2(nsIChannel* aChannel, nsIAuthPrompt2** aAuthPrompt) { + *aAuthPrompt = nullptr; + + // We want to use any auth prompt we can find on the channel's callbacks, + // and if that fails use the loadgroup's prompt (if any) + // Therefore, we can't just use NS_QueryNotificationCallbacks, because + // that would prefer a loadgroup's nsIAuthPrompt2 over a channel's + // nsIAuthPrompt. + nsCOMPtr<nsIInterfaceRequestor> callbacks; + aChannel->GetNotificationCallbacks(getter_AddRefs(callbacks)); + if (callbacks) { + NS_QueryAuthPrompt2(callbacks, aAuthPrompt); + if (*aAuthPrompt) return; + } + + nsCOMPtr<nsILoadGroup> group; + aChannel->GetLoadGroup(getter_AddRefs(group)); + if (!group) return; + + group->GetNotificationCallbacks(getter_AddRefs(callbacks)); + if (!callbacks) return; + NS_QueryAuthPrompt2(callbacks, aAuthPrompt); +} + +nsresult NS_NewNotificationCallbacksAggregation( + nsIInterfaceRequestor* callbacks, nsILoadGroup* loadGroup, + nsIEventTarget* target, nsIInterfaceRequestor** result) { + nsCOMPtr<nsIInterfaceRequestor> cbs; + if (loadGroup) loadGroup->GetNotificationCallbacks(getter_AddRefs(cbs)); + return NS_NewInterfaceRequestorAggregation(callbacks, cbs, target, result); +} + +nsresult NS_NewNotificationCallbacksAggregation( + nsIInterfaceRequestor* callbacks, nsILoadGroup* loadGroup, + nsIInterfaceRequestor** result) { + return NS_NewNotificationCallbacksAggregation(callbacks, loadGroup, nullptr, + result); +} + +nsresult NS_DoImplGetInnermostURI(nsINestedURI* nestedURI, nsIURI** result) { + MOZ_ASSERT(nestedURI, "Must have a nested URI!"); + MOZ_ASSERT(!*result, "Must have null *result"); + + nsCOMPtr<nsIURI> inner; + nsresult rv = nestedURI->GetInnerURI(getter_AddRefs(inner)); + NS_ENSURE_SUCCESS(rv, rv); + + // We may need to loop here until we reach the innermost + // URI. + nsCOMPtr<nsINestedURI> nestedInner(do_QueryInterface(inner)); + while (nestedInner) { + rv = nestedInner->GetInnerURI(getter_AddRefs(inner)); + NS_ENSURE_SUCCESS(rv, rv); + nestedInner = do_QueryInterface(inner); + } + + // Found the innermost one if we reach here. + inner.swap(*result); + + return rv; +} + +nsresult NS_ImplGetInnermostURI(nsINestedURI* nestedURI, nsIURI** result) { + // Make it safe to use swap() + *result = nullptr; + + return NS_DoImplGetInnermostURI(nestedURI, result); +} + +already_AddRefed<nsIURI> NS_GetInnermostURI(nsIURI* aURI) { + MOZ_ASSERT(aURI, "Must have URI"); + + nsCOMPtr<nsIURI> uri = aURI; + + nsCOMPtr<nsINestedURI> nestedURI(do_QueryInterface(uri)); + if (!nestedURI) { + return uri.forget(); + } + + nsresult rv = nestedURI->GetInnermostURI(getter_AddRefs(uri)); + if (NS_FAILED(rv)) { + return nullptr; + } + + return uri.forget(); +} + +nsresult NS_GetFinalChannelURI(nsIChannel* channel, nsIURI** uri) { + *uri = nullptr; + + nsCOMPtr<nsILoadInfo> loadInfo = channel->LoadInfo(); + nsCOMPtr<nsIURI> resultPrincipalURI; + loadInfo->GetResultPrincipalURI(getter_AddRefs(resultPrincipalURI)); + if (resultPrincipalURI) { + resultPrincipalURI.forget(uri); + return NS_OK; + } + return channel->GetOriginalURI(uri); +} + +nsresult NS_URIChainHasFlags(nsIURI* uri, uint32_t flags, bool* result) { + nsresult rv; + nsCOMPtr<nsINetUtil> util = do_GetNetUtil(&rv); + NS_ENSURE_SUCCESS(rv, rv); + + return util->URIChainHasFlags(uri, flags, result); +} + +uint32_t NS_SecurityHashURI(nsIURI* aURI) { + nsCOMPtr<nsIURI> baseURI = NS_GetInnermostURI(aURI); + + nsAutoCString scheme; + uint32_t schemeHash = 0; + if (NS_SUCCEEDED(baseURI->GetScheme(scheme))) + schemeHash = mozilla::HashString(scheme); + + // TODO figure out how to hash file:// URIs + if (scheme.EqualsLiteral("file")) return schemeHash; // sad face + +#if IS_ORIGIN_IS_FULL_SPEC_DEFINED + bool hasFlag; + if (NS_FAILED(NS_URIChainHasFlags( + baseURI, nsIProtocolHandler::ORIGIN_IS_FULL_SPEC, &hasFlag)) || + hasFlag) { + nsAutoCString spec; + uint32_t specHash; + nsresult res = baseURI->GetSpec(spec); + if (NS_SUCCEEDED(res)) + specHash = mozilla::HashString(spec); + else + specHash = static_cast<uint32_t>(res); + return specHash; + } +#endif + + nsAutoCString host; + uint32_t hostHash = 0; + if (NS_SUCCEEDED(baseURI->GetAsciiHost(host))) + hostHash = mozilla::HashString(host); + + return mozilla::AddToHash(schemeHash, hostHash, NS_GetRealPort(baseURI)); +} + +bool NS_SecurityCompareURIs(nsIURI* aSourceURI, nsIURI* aTargetURI, + bool aStrictFileOriginPolicy) { + nsresult rv; + + // Note that this is not an Equals() test on purpose -- for URIs that don't + // support host/port, we want equality to basically be object identity, for + // security purposes. Otherwise, for example, two javascript: URIs that + // are otherwise unrelated could end up "same origin", which would be + // unfortunate. + if (aSourceURI && aSourceURI == aTargetURI) { + return true; + } + + if (!aTargetURI || !aSourceURI) { + return false; + } + + // If either URI is a nested URI, get the base URI + nsCOMPtr<nsIURI> sourceBaseURI = NS_GetInnermostURI(aSourceURI); + nsCOMPtr<nsIURI> targetBaseURI = NS_GetInnermostURI(aTargetURI); + +#if defined(MOZ_THUNDERBIRD) || defined(MOZ_SUITE) + // Check if either URI has a special origin. + nsCOMPtr<nsIURI> origin; + nsCOMPtr<nsIURIWithSpecialOrigin> uriWithSpecialOrigin = + do_QueryInterface(sourceBaseURI); + if (uriWithSpecialOrigin) { + rv = uriWithSpecialOrigin->GetOrigin(getter_AddRefs(origin)); + if (NS_WARN_IF(NS_FAILED(rv))) { + return false; + } + MOZ_ASSERT(origin); + sourceBaseURI = origin; + } + uriWithSpecialOrigin = do_QueryInterface(targetBaseURI); + if (uriWithSpecialOrigin) { + rv = uriWithSpecialOrigin->GetOrigin(getter_AddRefs(origin)); + if (NS_WARN_IF(NS_FAILED(rv))) { + return false; + } + MOZ_ASSERT(origin); + targetBaseURI = origin; + } +#endif + + nsCOMPtr<nsIPrincipal> sourceBlobPrincipal; + if (BlobURLProtocolHandler::GetBlobURLPrincipal( + sourceBaseURI, getter_AddRefs(sourceBlobPrincipal))) { + nsCOMPtr<nsIURI> sourceBlobOwnerURI; + auto* basePrin = BasePrincipal::Cast(sourceBlobPrincipal); + rv = basePrin->GetURI(getter_AddRefs(sourceBlobOwnerURI)); + if (NS_SUCCEEDED(rv)) { + sourceBaseURI = sourceBlobOwnerURI; + } + } + + nsCOMPtr<nsIPrincipal> targetBlobPrincipal; + if (BlobURLProtocolHandler::GetBlobURLPrincipal( + targetBaseURI, getter_AddRefs(targetBlobPrincipal))) { + nsCOMPtr<nsIURI> targetBlobOwnerURI; + auto* basePrin = BasePrincipal::Cast(targetBlobPrincipal); + rv = basePrin->GetURI(getter_AddRefs(targetBlobOwnerURI)); + if (NS_SUCCEEDED(rv)) { + targetBaseURI = targetBlobOwnerURI; + } + } + + if (!sourceBaseURI || !targetBaseURI) return false; + + // Compare schemes + nsAutoCString targetScheme; + bool sameScheme = false; + if (NS_FAILED(targetBaseURI->GetScheme(targetScheme)) || + NS_FAILED(sourceBaseURI->SchemeIs(targetScheme.get(), &sameScheme)) || + !sameScheme) { + // Not same-origin if schemes differ + return false; + } + + // For file scheme, reject unless the files are identical. See + // NS_RelaxStrictFileOriginPolicy for enforcing file same-origin checking + if (targetScheme.EqualsLiteral("file")) { + // in traditional unsafe behavior all files are the same origin + if (!aStrictFileOriginPolicy) return true; + + nsCOMPtr<nsIFileURL> sourceFileURL(do_QueryInterface(sourceBaseURI)); + nsCOMPtr<nsIFileURL> targetFileURL(do_QueryInterface(targetBaseURI)); + + if (!sourceFileURL || !targetFileURL) return false; + + nsCOMPtr<nsIFile> sourceFile, targetFile; + + sourceFileURL->GetFile(getter_AddRefs(sourceFile)); + targetFileURL->GetFile(getter_AddRefs(targetFile)); + + if (!sourceFile || !targetFile) return false; + + // Otherwise they had better match + bool filesAreEqual = false; + rv = sourceFile->Equals(targetFile, &filesAreEqual); + return NS_SUCCEEDED(rv) && filesAreEqual; + } + +#if IS_ORIGIN_IS_FULL_SPEC_DEFINED + bool hasFlag; + if (NS_FAILED(NS_URIChainHasFlags( + targetBaseURI, nsIProtocolHandler::ORIGIN_IS_FULL_SPEC, &hasFlag)) || + hasFlag) { + // URIs with this flag have the whole spec as a distinct trust + // domain; use the whole spec for comparison + nsAutoCString targetSpec; + nsAutoCString sourceSpec; + return (NS_SUCCEEDED(targetBaseURI->GetSpec(targetSpec)) && + NS_SUCCEEDED(sourceBaseURI->GetSpec(sourceSpec)) && + targetSpec.Equals(sourceSpec)); + } +#endif + + // Compare hosts + nsAutoCString targetHost; + nsAutoCString sourceHost; + if (NS_FAILED(targetBaseURI->GetAsciiHost(targetHost)) || + NS_FAILED(sourceBaseURI->GetAsciiHost(sourceHost))) { + return false; + } + + nsCOMPtr<nsIStandardURL> targetURL(do_QueryInterface(targetBaseURI)); + nsCOMPtr<nsIStandardURL> sourceURL(do_QueryInterface(sourceBaseURI)); + if (!targetURL || !sourceURL) { + return false; + } + + if (!targetHost.Equals(sourceHost, nsCaseInsensitiveCStringComparator)) { + return false; + } + + return NS_GetRealPort(targetBaseURI) == NS_GetRealPort(sourceBaseURI); +} + +bool NS_URIIsLocalFile(nsIURI* aURI) { + nsCOMPtr<nsINetUtil> util = do_GetNetUtil(); + + bool isFile; + return util && + NS_SUCCEEDED(util->ProtocolHasFlags( + aURI, nsIProtocolHandler::URI_IS_LOCAL_FILE, &isFile)) && + isFile; +} + +bool NS_RelaxStrictFileOriginPolicy(nsIURI* aTargetURI, nsIURI* aSourceURI, + bool aAllowDirectoryTarget /* = false */) { + if (!NS_URIIsLocalFile(aTargetURI)) { + // This is probably not what the caller intended + MOZ_ASSERT_UNREACHABLE( + "NS_RelaxStrictFileOriginPolicy called with non-file URI"); + return false; + } + + if (!NS_URIIsLocalFile(aSourceURI)) { + // If the source is not also a file: uri then forget it + // (don't want resource: principals in a file: doc) + // + // note: we're not de-nesting jar: uris here, we want to + // keep archive content bottled up in its own little island + return false; + } + + // + // pull out the internal files + // + nsCOMPtr<nsIFileURL> targetFileURL(do_QueryInterface(aTargetURI)); + nsCOMPtr<nsIFileURL> sourceFileURL(do_QueryInterface(aSourceURI)); + nsCOMPtr<nsIFile> targetFile; + nsCOMPtr<nsIFile> sourceFile; + bool targetIsDir; + + // Make sure targetFile is not a directory (bug 209234) + // and that it exists w/out unescaping (bug 395343) + if (!sourceFileURL || !targetFileURL || + NS_FAILED(targetFileURL->GetFile(getter_AddRefs(targetFile))) || + NS_FAILED(sourceFileURL->GetFile(getter_AddRefs(sourceFile))) || + !targetFile || !sourceFile || NS_FAILED(targetFile->Normalize()) || +#ifndef MOZ_WIDGET_ANDROID + NS_FAILED(sourceFile->Normalize()) || +#endif + (!aAllowDirectoryTarget && + (NS_FAILED(targetFile->IsDirectory(&targetIsDir)) || targetIsDir))) { + return false; + } + + if (!StaticPrefs::privacy_file_unique_origin()) { + // + // If the file to be loaded is in a subdirectory of the source + // (or same-dir if source is not a directory) then it will + // inherit its source principal and be scriptable by that source. + // + bool sourceIsDir; + bool allowed = false; + nsresult rv = sourceFile->IsDirectory(&sourceIsDir); + if (NS_SUCCEEDED(rv) && sourceIsDir) { + rv = sourceFile->Contains(targetFile, &allowed); + } else { + nsCOMPtr<nsIFile> sourceParent; + rv = sourceFile->GetParent(getter_AddRefs(sourceParent)); + if (NS_SUCCEEDED(rv) && sourceParent) { + rv = sourceParent->Equals(targetFile, &allowed); + if (NS_FAILED(rv) || !allowed) { + rv = sourceParent->Contains(targetFile, &allowed); + } else { + MOZ_ASSERT(aAllowDirectoryTarget, + "sourceFile->Parent == targetFile, but targetFile " + "should've been disallowed if it is a directory"); + } + } + } + + if (NS_SUCCEEDED(rv) && allowed) { + return true; + } + } + + return false; +} + +bool NS_IsInternalSameURIRedirect(nsIChannel* aOldChannel, + nsIChannel* aNewChannel, uint32_t aFlags) { + if (!(aFlags & nsIChannelEventSink::REDIRECT_INTERNAL)) { + return false; + } + + nsCOMPtr<nsIURI> oldURI, newURI; + aOldChannel->GetURI(getter_AddRefs(oldURI)); + aNewChannel->GetURI(getter_AddRefs(newURI)); + + if (!oldURI || !newURI) { + return false; + } + + bool res; + return NS_SUCCEEDED(oldURI->Equals(newURI, &res)) && res; +} + +bool NS_IsHSTSUpgradeRedirect(nsIChannel* aOldChannel, nsIChannel* aNewChannel, + uint32_t aFlags) { + if (!(aFlags & nsIChannelEventSink::REDIRECT_STS_UPGRADE)) { + return false; + } + + nsCOMPtr<nsIURI> oldURI, newURI; + aOldChannel->GetURI(getter_AddRefs(oldURI)); + aNewChannel->GetURI(getter_AddRefs(newURI)); + + if (!oldURI || !newURI) { + return false; + } + + if (!oldURI->SchemeIs("http")) { + return false; + } + + nsCOMPtr<nsIURI> upgradedURI; + nsresult rv = NS_GetSecureUpgradedURI(oldURI, getter_AddRefs(upgradedURI)); + if (NS_FAILED(rv)) { + return false; + } + + bool res; + return NS_SUCCEEDED(upgradedURI->Equals(newURI, &res)) && res; +} + +nsresult NS_LinkRedirectChannels(uint64_t channelId, + nsIParentChannel* parentChannel, + nsIChannel** _result) { + nsCOMPtr<nsIRedirectChannelRegistrar> registrar = + RedirectChannelRegistrar::GetOrCreate(); + MOZ_ASSERT(registrar); + + return registrar->LinkChannels(channelId, parentChannel, _result); +} + +nsresult NS_MaybeOpenChannelUsingOpen(nsIChannel* aChannel, + nsIInputStream** aStream) { + nsCOMPtr<nsILoadInfo> loadInfo = aChannel->LoadInfo(); + return aChannel->Open(aStream); +} + +nsresult NS_MaybeOpenChannelUsingAsyncOpen(nsIChannel* aChannel, + nsIStreamListener* aListener) { + nsCOMPtr<nsILoadInfo> loadInfo = aChannel->LoadInfo(); + return aChannel->AsyncOpen(aListener); +} + +nsILoadInfo::CrossOriginEmbedderPolicy +NS_GetCrossOriginEmbedderPolicyFromHeader(const nsACString& aHeader) { + nsCOMPtr<nsISFVService> sfv = GetSFVService(); + + nsCOMPtr<nsISFVItem> item; + nsresult rv = sfv->ParseItem(aHeader, getter_AddRefs(item)); + if (NS_FAILED(rv)) { + return nsILoadInfo::EMBEDDER_POLICY_NULL; + } + + nsCOMPtr<nsISFVBareItem> value; + rv = item->GetValue(getter_AddRefs(value)); + if (NS_FAILED(rv)) { + return nsILoadInfo::EMBEDDER_POLICY_NULL; + } + + nsCOMPtr<nsISFVToken> token = do_QueryInterface(value); + if (!token) { + return nsILoadInfo::EMBEDDER_POLICY_NULL; + } + + nsAutoCString embedderPolicy; + rv = token->GetValue(embedderPolicy); + if (NS_FAILED(rv)) { + return nsILoadInfo::EMBEDDER_POLICY_NULL; + } + + return embedderPolicy.EqualsLiteral("require-corp") + ? nsILoadInfo::EMBEDDER_POLICY_REQUIRE_CORP + : nsILoadInfo::EMBEDDER_POLICY_NULL; +} + +/** Given the first (disposition) token from a Content-Disposition header, + * tell whether it indicates the content is inline or attachment + * @param aDispToken the disposition token from the content-disposition header + */ +uint32_t NS_GetContentDispositionFromToken(const nsAString& aDispToken) { + // RFC 2183, section 2.8 says that an unknown disposition + // value should be treated as "attachment" + // If all of these tests eval to false, then we have a content-disposition of + // "attachment" or unknown + if (aDispToken.IsEmpty() || aDispToken.LowerCaseEqualsLiteral("inline") || + // Broken sites just send + // Content-Disposition: filename="file" + // without a disposition token... screen those out. + StringHead(aDispToken, 8).LowerCaseEqualsLiteral("filename")) + return nsIChannel::DISPOSITION_INLINE; + + return nsIChannel::DISPOSITION_ATTACHMENT; +} + +uint32_t NS_GetContentDispositionFromHeader(const nsACString& aHeader, + nsIChannel* aChan /* = nullptr */) { + nsresult rv; + nsCOMPtr<nsIMIMEHeaderParam> mimehdrpar = + do_GetService(NS_MIMEHEADERPARAM_CONTRACTID, &rv); + if (NS_FAILED(rv)) return nsIChannel::DISPOSITION_ATTACHMENT; + + nsAutoString dispToken; + rv = mimehdrpar->GetParameterHTTP(aHeader, "", ""_ns, true, nullptr, + dispToken); + + if (NS_FAILED(rv)) { + // special case (see bug 272541): empty disposition type handled as "inline" + if (rv == NS_ERROR_FIRST_HEADER_FIELD_COMPONENT_EMPTY) + return nsIChannel::DISPOSITION_INLINE; + return nsIChannel::DISPOSITION_ATTACHMENT; + } + + return NS_GetContentDispositionFromToken(dispToken); +} + +nsresult NS_GetFilenameFromDisposition(nsAString& aFilename, + const nsACString& aDisposition) { + aFilename.Truncate(); + + nsresult rv; + nsCOMPtr<nsIMIMEHeaderParam> mimehdrpar = + do_GetService(NS_MIMEHEADERPARAM_CONTRACTID, &rv); + if (NS_FAILED(rv)) return rv; + + // Get the value of 'filename' parameter + rv = mimehdrpar->GetParameterHTTP(aDisposition, "filename", ""_ns, true, + nullptr, aFilename); + + if (NS_FAILED(rv)) { + aFilename.Truncate(); + return rv; + } + + if (aFilename.IsEmpty()) return NS_ERROR_NOT_AVAILABLE; + + // Filename may still be percent-encoded. Fix: + if (aFilename.FindChar('%') != -1) { + nsCOMPtr<nsITextToSubURI> textToSubURI = + do_GetService(NS_ITEXTTOSUBURI_CONTRACTID, &rv); + if (NS_SUCCEEDED(rv)) { + nsAutoString unescaped; + textToSubURI->UnEscapeURIForUI(NS_ConvertUTF16toUTF8(aFilename), + unescaped); + aFilename.Assign(unescaped); + } + } + + return NS_OK; +} + +void net_EnsurePSMInit() { + if (XRE_IsSocketProcess()) { + EnsureNSSInitializedChromeOrContent(); + return; + } + + MOZ_ASSERT(XRE_IsParentProcess()); + MOZ_ASSERT(NS_IsMainThread()); + + DebugOnly<bool> rv = EnsureNSSInitializedChromeOrContent(); + MOZ_ASSERT(rv); +} + +bool NS_IsAboutBlank(nsIURI* uri) { + // GetSpec can be expensive for some URIs, so check the scheme first. + if (!uri->SchemeIs("about")) { + return false; + } + + return uri->GetSpecOrDefault().EqualsLiteral("about:blank"); +} + +nsresult NS_GenerateHostPort(const nsCString& host, int32_t port, + nsACString& hostLine) { + if (strchr(host.get(), ':')) { + // host is an IPv6 address literal and must be encapsulated in []'s + hostLine.Assign('['); + // scope id is not needed for Host header. + int scopeIdPos = host.FindChar('%'); + if (scopeIdPos == -1) + hostLine.Append(host); + else if (scopeIdPos > 0) + hostLine.Append(Substring(host, 0, scopeIdPos)); + else + return NS_ERROR_MALFORMED_URI; + hostLine.Append(']'); + } else + hostLine.Assign(host); + if (port != -1) { + hostLine.Append(':'); + hostLine.AppendInt(port); + } + return NS_OK; +} + +void NS_SniffContent(const char* aSnifferType, nsIRequest* aRequest, + const uint8_t* aData, uint32_t aLength, + nsACString& aSniffedType) { + typedef nsCategoryCache<nsIContentSniffer> ContentSnifferCache; + extern ContentSnifferCache* gNetSniffers; + extern ContentSnifferCache* gDataSniffers; + ContentSnifferCache* cache = nullptr; + if (!strcmp(aSnifferType, NS_CONTENT_SNIFFER_CATEGORY)) { + if (!gNetSniffers) { + gNetSniffers = new ContentSnifferCache(NS_CONTENT_SNIFFER_CATEGORY); + } + cache = gNetSniffers; + } else if (!strcmp(aSnifferType, NS_DATA_SNIFFER_CATEGORY)) { + if (!gDataSniffers) { + gDataSniffers = new ContentSnifferCache(NS_DATA_SNIFFER_CATEGORY); + } + cache = gDataSniffers; + } else { + // Invalid content sniffer type was requested + MOZ_ASSERT(false); + return; + } + + // In case XCTO nosniff was present, we could just skip sniffing here + nsCOMPtr<nsIChannel> channel = do_QueryInterface(aRequest); + if (channel) { + nsCOMPtr<nsILoadInfo> loadInfo = channel->LoadInfo(); + if (loadInfo->GetSkipContentSniffing()) { + /* Bug 1571742 + * We cannot skip snffing if the current MIME-Type might be a JSON. + * The JSON-Viewer relies on its own sniffer to determine, if it can + * render the page, so we need to make an exception if the Server provides + * a application/ mime, as it might be json. + */ + nsAutoCString currentContentType; + channel->GetContentType(currentContentType); + if (!StringBeginsWith(currentContentType, "application/"_ns)) { + return; + } + } + } + nsCOMArray<nsIContentSniffer> sniffers; + cache->GetEntries(sniffers); + for (int32_t i = 0; i < sniffers.Count(); ++i) { + nsresult rv = sniffers[i]->GetMIMETypeFromContent(aRequest, aData, aLength, + aSniffedType); + if (NS_SUCCEEDED(rv) && !aSniffedType.IsEmpty()) { + return; + } + } + + aSniffedType.Truncate(); +} + +bool NS_IsSrcdocChannel(nsIChannel* aChannel) { + bool isSrcdoc; + nsCOMPtr<nsIInputStreamChannel> isr = do_QueryInterface(aChannel); + if (isr) { + isr->GetIsSrcdocChannel(&isSrcdoc); + return isSrcdoc; + } + nsCOMPtr<nsIViewSourceChannel> vsc = do_QueryInterface(aChannel); + if (vsc) { + nsresult rv = vsc->GetIsSrcdocChannel(&isSrcdoc); + if (NS_SUCCEEDED(rv)) { + return isSrcdoc; + } + } + return false; +} + +nsresult NS_ShouldSecureUpgrade( + nsIURI* aURI, nsILoadInfo* aLoadInfo, nsIPrincipal* aChannelResultPrincipal, + bool aPrivateBrowsing, bool aAllowSTS, + const OriginAttributes& aOriginAttributes, bool& aShouldUpgrade, + std::function<void(bool, nsresult)>&& aResultCallback, + bool& aWillCallback) { + aWillCallback = false; + + // Even if we're in private browsing mode, we still enforce existing STS + // data (it is read-only). + // if the connection is not using SSL and either the exact host matches or + // a superdomain wants to force HTTPS, do it. + bool isHttps = aURI->SchemeIs("https"); + + if (!isHttps && + !nsMixedContentBlocker::IsPotentiallyTrustworthyLoopbackURL(aURI)) { + if (aLoadInfo) { + // Check if the request can get upgraded with the HTTPS-Only mode + if (nsHTTPSOnlyUtils::ShouldUpgradeRequest(aURI, aLoadInfo)) { + aShouldUpgrade = true; + return NS_OK; + } + + // If any of the documents up the chain to the root document makes use of + // the CSP directive 'upgrade-insecure-requests', then it's time to + // fulfill the promise to CSP and mixed content blocking to upgrade the + // channel from http to https. + if (aLoadInfo->GetUpgradeInsecureRequests() || + aLoadInfo->GetBrowserUpgradeInsecureRequests()) { + // let's log a message to the console that we are upgrading a request + nsAutoCString scheme; + aURI->GetScheme(scheme); + // append the additional 's' for security to the scheme :-) + scheme.AppendLiteral("s"); + NS_ConvertUTF8toUTF16 reportSpec(aURI->GetSpecOrDefault()); + NS_ConvertUTF8toUTF16 reportScheme(scheme); + + if (aLoadInfo->GetUpgradeInsecureRequests()) { + AutoTArray<nsString, 2> params = {reportSpec, reportScheme}; + uint32_t innerWindowId = aLoadInfo->GetInnerWindowID(); + CSP_LogLocalizedStr( + "upgradeInsecureRequest", params, + u""_ns, // aSourceFile + u""_ns, // aScriptSample + 0, // aLineNumber + 0, // aColumnNumber + nsIScriptError::warningFlag, "upgradeInsecureRequest"_ns, + innerWindowId, + !!aLoadInfo->GetOriginAttributes().mPrivateBrowsingId); + Telemetry::AccumulateCategorical( + Telemetry::LABELS_HTTP_SCHEME_UPGRADE_TYPE::CSP); + } else { + AutoTArray<nsString, 2> params = {reportSpec, reportScheme}; + + nsAutoString localizedMsg; + nsContentUtils::FormatLocalizedString( + nsContentUtils::eSECURITY_PROPERTIES, "MixedContentAutoUpgrade", + params, localizedMsg); + + // Prepending ixed Content to the outgoing console message + nsString message; + message.AppendLiteral(u"Mixed Content: "); + message.Append(localizedMsg); + + uint32_t innerWindowId = aLoadInfo->GetInnerWindowID(); + nsContentUtils::ReportToConsoleByWindowID( + message, nsIScriptError::warningFlag, "Mixed Content Message"_ns, + innerWindowId, aURI); + + // Set this flag so we know we'll upgrade because of + // 'security.mixed_content.upgrade_display_content'. + aLoadInfo->SetBrowserDidUpgradeInsecureRequests(true); + Telemetry::AccumulateCategorical( + Telemetry::LABELS_HTTP_SCHEME_UPGRADE_TYPE::BrowserDisplay); + } + + aShouldUpgrade = true; + return NS_OK; + } + } + + // enforce Strict-Transport-Security + nsISiteSecurityService* sss = gHttpHandler->GetSSService(); + NS_ENSURE_TRUE(sss, NS_ERROR_OUT_OF_MEMORY); + + bool isStsHost = false; + uint32_t hstsSource = 0; + uint32_t flags = + aPrivateBrowsing ? nsISocketProvider::NO_PERMANENT_STORAGE : 0; + + auto handleResultFunc = [aAllowSTS](bool aIsStsHost, uint32_t aHstsSource) { + if (aIsStsHost) { + LOG(("nsHttpChannel::Connect() STS permissions found\n")); + if (aAllowSTS) { + Telemetry::AccumulateCategorical( + Telemetry::LABELS_HTTP_SCHEME_UPGRADE_TYPE::STS); + switch (aHstsSource) { + case nsISiteSecurityService::SOURCE_PRELOAD_LIST: + Telemetry::Accumulate(Telemetry::HSTS_UPGRADE_SOURCE, 0); + break; + case nsISiteSecurityService::SOURCE_ORGANIC_REQUEST: + Telemetry::Accumulate(Telemetry::HSTS_UPGRADE_SOURCE, 1); + break; + case nsISiteSecurityService::SOURCE_UNKNOWN: + default: + // record this as an organic request + Telemetry::Accumulate(Telemetry::HSTS_UPGRADE_SOURCE, 1); + break; + } + return true; + } + Telemetry::AccumulateCategorical( + Telemetry::LABELS_HTTP_SCHEME_UPGRADE_TYPE::PrefBlockedSTS); + } else { + Telemetry::AccumulateCategorical( + Telemetry::LABELS_HTTP_SCHEME_UPGRADE_TYPE::NoReasonToUpgrade); + } + return false; + }; + + // Calling |IsSecureURI| before the storage is ready to read will + // block the main thread. Once the storage is ready, we can call it + // from main thread. + static Atomic<bool, Relaxed> storageReady(false); + if (!storageReady && gSocketTransportService && aResultCallback) { + nsCOMPtr<nsIURI> uri = aURI; + nsCOMPtr<nsISiteSecurityService> service = sss; + nsresult rv = gSocketTransportService->Dispatch( + NS_NewRunnableFunction( + "net::NS_ShouldSecureUpgrade", + [service{std::move(service)}, uri{std::move(uri)}, flags(flags), + originAttributes(aOriginAttributes), + handleResultFunc{std::move(handleResultFunc)}, + resultCallback{std::move(aResultCallback)}]() mutable { + uint32_t hstsSource = 0; + bool isStsHost = false; + nsresult rv = service->IsSecureURI( + nsISiteSecurityService::HEADER_HSTS, uri, flags, + originAttributes, nullptr, &hstsSource, &isStsHost); + + // Successfully get the result from |IsSecureURI| implies that + // the storage is ready to read. + storageReady = NS_SUCCEEDED(rv); + bool shouldUpgrade = handleResultFunc(isStsHost, hstsSource); + + NS_DispatchToMainThread(NS_NewRunnableFunction( + "net::NS_ShouldSecureUpgrade::ResultCallback", + [rv, shouldUpgrade, + resultCallback{std::move(resultCallback)}]() { + resultCallback(shouldUpgrade, rv); + })); + }), + NS_DISPATCH_NORMAL); + aWillCallback = NS_SUCCEEDED(rv); + return rv; + } + + nsresult rv = + sss->IsSecureURI(nsISiteSecurityService::HEADER_HSTS, aURI, flags, + aOriginAttributes, nullptr, &hstsSource, &isStsHost); + + // if the SSS check fails, it's likely because this load is on a + // malformed URI or something else in the setup is wrong, so any error + // should be reported. + NS_ENSURE_SUCCESS(rv, rv); + + aShouldUpgrade = handleResultFunc(isStsHost, hstsSource); + return NS_OK; + } + + Telemetry::AccumulateCategorical( + Telemetry::LABELS_HTTP_SCHEME_UPGRADE_TYPE::AlreadyHTTPS); + aShouldUpgrade = false; + return NS_OK; +} + +nsresult NS_GetSecureUpgradedURI(nsIURI* aURI, nsIURI** aUpgradedURI) { + NS_MutateURI mutator(aURI); + mutator.SetScheme("https"_ns); // Change the scheme to HTTPS: + + // Change the default port to 443: + nsCOMPtr<nsIStandardURL> stdURL = do_QueryInterface(aURI); + if (stdURL) { + mutator.Apply( + NS_MutatorMethod(&nsIStandardURLMutator::SetDefaultPort, 443, nullptr)); + } else { + // If we don't have a nsStandardURL, fall back to using GetPort/SetPort. + // XXXdholbert Is this function even called with a non-nsStandardURL arg, + // in practice? + NS_WARNING("Calling NS_GetSecureUpgradedURI for non nsStandardURL"); + int32_t oldPort = -1; + nsresult rv = aURI->GetPort(&oldPort); + if (NS_FAILED(rv)) return rv; + + // Keep any nonstandard ports so only the scheme is changed. + // For example: + // http://foo.com:80 -> https://foo.com:443 + // http://foo.com:81 -> https://foo.com:81 + + if (oldPort == 80 || oldPort == -1) { + mutator.SetPort(-1); + } else { + mutator.SetPort(oldPort); + } + } + + return mutator.Finalize(aUpgradedURI); +} + +nsresult NS_CompareLoadInfoAndLoadContext(nsIChannel* aChannel) { + nsCOMPtr<nsILoadInfo> loadInfo = aChannel->LoadInfo(); + + nsCOMPtr<nsILoadContext> loadContext; + NS_QueryNotificationCallbacks(aChannel, loadContext); + if (!loadContext) { + return NS_OK; + } + + // We try to skip about:newtab. + // about:newtab will use SystemPrincipal to download thumbnails through + // https:// and blob URLs. + bool isAboutPage = false; + nsINode* node = loadInfo->LoadingNode(); + if (node) { + nsIURI* uri = node->OwnerDoc()->GetDocumentURI(); + isAboutPage = uri->SchemeIs("about"); + } + + if (isAboutPage) { + return NS_OK; + } + + // We skip the favicon loading here. The favicon loading might be + // triggered by the XUL image. For that case, the loadContext will have + // default originAttributes since the XUL image uses SystemPrincipal, but + // the loadInfo will use originAttributes from the content. Thus, the + // originAttributes between loadInfo and loadContext will be different. + // That's why we have to skip the comparison for the favicon loading. + if (loadInfo->GetLoadingPrincipal() && + loadInfo->GetLoadingPrincipal()->IsSystemPrincipal() && + loadInfo->InternalContentPolicyType() == + nsIContentPolicy::TYPE_INTERNAL_IMAGE_FAVICON) { + return NS_OK; + } + + OriginAttributes originAttrsLoadInfo = loadInfo->GetOriginAttributes(); + OriginAttributes originAttrsLoadContext; + loadContext->GetOriginAttributes(originAttrsLoadContext); + + LOG( + ("NS_CompareLoadInfoAndLoadContext - loadInfo: %d, %d; " + "loadContext: %d, %d. [channel=%p]", + originAttrsLoadInfo.mUserContextId, + originAttrsLoadInfo.mPrivateBrowsingId, + originAttrsLoadContext.mUserContextId, + originAttrsLoadContext.mPrivateBrowsingId, aChannel)); + + MOZ_ASSERT(originAttrsLoadInfo.mUserContextId == + originAttrsLoadContext.mUserContextId, + "The value of mUserContextId in the loadContext and in the " + "loadInfo are not the same!"); + + MOZ_ASSERT(originAttrsLoadInfo.mPrivateBrowsingId == + originAttrsLoadContext.mPrivateBrowsingId, + "The value of mPrivateBrowsingId in the loadContext and in the " + "loadInfo are not the same!"); + + return NS_OK; +} + +nsresult NS_SetRequestBlockingReason(nsIChannel* channel, uint32_t reason) { + NS_ENSURE_ARG(channel); + + nsCOMPtr<nsILoadInfo> loadInfo = channel->LoadInfo(); + return NS_SetRequestBlockingReason(loadInfo, reason); +} + +nsresult NS_SetRequestBlockingReason(nsILoadInfo* loadInfo, uint32_t reason) { + NS_ENSURE_ARG(loadInfo); + + return loadInfo->SetRequestBlockingReason(reason); +} + +nsresult NS_SetRequestBlockingReasonIfNull(nsILoadInfo* loadInfo, + uint32_t reason) { + NS_ENSURE_ARG(loadInfo); + + uint32_t existingReason; + if (NS_SUCCEEDED(loadInfo->GetRequestBlockingReason(&existingReason)) && + existingReason != nsILoadInfo::BLOCKING_REASON_NONE) { + return NS_OK; + } + + return loadInfo->SetRequestBlockingReason(reason); +} + +bool NS_IsOffline() { + bool offline = true; + bool connectivity = true; + nsCOMPtr<nsIIOService> ios = do_GetIOService(); + if (ios) { + ios->GetOffline(&offline); + ios->GetConnectivity(&connectivity); + } + return offline || !connectivity; +} + +/** + * This function returns true if this channel should be classified by + * the URL Classifier, false otherwise. + * + * The idea of the algorithm to determine if a channel should be + * classified is based on: + * 1. Channels created by non-privileged code should be classified. + * 2. Top-level document’s channels, if loaded by privileged code + * (system principal), should be classified. + * 3. Any other channel, created by privileged code, is considered safe. + * + * A bad/hacked/corrupted safebrowsing database, plus a mistakenly + * classified critical channel (this may result from a bug in the exemption + * rules or incorrect information being passed into) can cause serious + * problems. For example, if the updater channel is classified and blocked + * by the Safe Browsing, Firefox can't update itself, and there is no way to + * recover from that. + * + * So two safeguards are added to ensure critical channels are never + * automatically classified either because there is a bug in the algorithm + * or the data in loadinfo is wrong. + * 1. beConservative, this is set by ServiceRequest and we treat + * channel created for ServiceRequest as critical channels. + * 2. nsIChannel::LOAD_BYPASS_URL_CLASSIFIER, channel's opener can use this + * flag to enforce bypassing the URL classifier check. + */ +bool NS_ShouldClassifyChannel(nsIChannel* aChannel) { + nsLoadFlags loadFlags; + Unused << aChannel->GetLoadFlags(&loadFlags); + // If our load flags dictate that we must let this channel through without + // URL classification, obey that here without performing more checks. + if (loadFlags & nsIChannel::LOAD_BYPASS_URL_CLASSIFIER) { + return false; + } + + nsCOMPtr<nsIHttpChannelInternal> httpChannel(do_QueryInterface(aChannel)); + if (httpChannel) { + bool beConservative; + nsresult rv = httpChannel->GetBeConservative(&beConservative); + + // beConservative flag, set by ServiceRequest to ensure channels that + // fetch update use conservative TLS setting, are used here to identify + // channels are critical to bypass classification. for channels don't + // support beConservative, continue to apply the exemption rules. + if (NS_SUCCEEDED(rv) && beConservative) { + return false; + } + } + + nsCOMPtr<nsILoadInfo> loadInfo = aChannel->LoadInfo(); + ExtContentPolicyType type = loadInfo->GetExternalContentPolicyType(); + // Skip classifying channel triggered by system unless it is a top-level + // load. + if (loadInfo->TriggeringPrincipal()->IsSystemPrincipal() && + ExtContentPolicy::TYPE_DOCUMENT != type) { + return false; + } + + return true; +} + +namespace mozilla { +namespace net { + +bool InScriptableRange(int64_t val) { + return (val <= kJS_MAX_SAFE_INTEGER) && (val >= kJS_MIN_SAFE_INTEGER); +} + +bool InScriptableRange(uint64_t val) { return val <= kJS_MAX_SAFE_UINTEGER; } + +nsresult GetParameterHTTP(const nsACString& aHeaderVal, const char* aParamName, + nsAString& aResult) { + return nsMIMEHeaderParamImpl::GetParameterHTTP(aHeaderVal, aParamName, + aResult); +} + +bool ChannelIsPost(nsIChannel* aChannel) { + if (nsCOMPtr<nsIHttpChannel> httpChannel = do_QueryInterface(aChannel)) { + nsAutoCString method; + Unused << httpChannel->GetRequestMethod(method); + return method.EqualsLiteral("POST"); + } + return false; +} + +bool SchemeIsHTTP(nsIURI* aURI) { + MOZ_ASSERT(aURI); + return aURI->SchemeIs("http"); +} + +bool SchemeIsHTTPS(nsIURI* aURI) { + MOZ_ASSERT(aURI); + return aURI->SchemeIs("https"); +} + +bool SchemeIsJavascript(nsIURI* aURI) { + MOZ_ASSERT(aURI); + return aURI->SchemeIs("javascript"); +} + +bool SchemeIsChrome(nsIURI* aURI) { + MOZ_ASSERT(aURI); + return aURI->SchemeIs("chrome"); +} + +bool SchemeIsAbout(nsIURI* aURI) { + MOZ_ASSERT(aURI); + return aURI->SchemeIs("about"); +} + +bool SchemeIsBlob(nsIURI* aURI) { + MOZ_ASSERT(aURI); + return aURI->SchemeIs("blob"); +} + +bool SchemeIsFile(nsIURI* aURI) { + MOZ_ASSERT(aURI); + return aURI->SchemeIs("file"); +} + +bool SchemeIsData(nsIURI* aURI) { + MOZ_ASSERT(aURI); + return aURI->SchemeIs("data"); +} + +bool SchemeIsViewSource(nsIURI* aURI) { + MOZ_ASSERT(aURI); + return aURI->SchemeIs("view-source"); +} + +bool SchemeIsResource(nsIURI* aURI) { + MOZ_ASSERT(aURI); + return aURI->SchemeIs("resource"); +} + +bool SchemeIsFTP(nsIURI* aURI) { + MOZ_ASSERT(aURI); + return aURI->SchemeIs("ftp"); +} + +} // namespace net +} // namespace mozilla |