Quelle nsNetUtil.cpp Sprache: C

/* -*- 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 "DecoderDoctorDiagnostics.h"
#include "HttpLog.h"

#include "nsNetUtil.h"

#include "mozilla/Atomics.h"
#include "mozilla/BasePrincipal.h"
#include "mozilla/Components.h"
#include "mozilla/Encoding.h"
#include "mozilla/LoadContext.h"
#include "mozilla/LoadInfo.h"
#include "mozilla/Monitor.h"
#include "mozilla/StaticPrefs_browser.h"
#include "mozilla/StaticPrefs_network.h"
#include "mozilla/StaticPrefs_privacy.h"
#include "mozilla/StoragePrincipalHelper.h"
#include "mozilla/TaskQueue.h"
#include "mozilla/Telemetry.h"
#include "nsAboutProtocolUtils.h"
#include "nsBufferedStreams.h"
#include "nsCategoryCache.h"
#include "nsComponentManagerUtils.h"
#include "nsContentUtils.h"
#include "nsEscape.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 "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 "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"
#ifndef XP_IOS
#  include "nsIconURI.h"
#endif
#include "nsAboutProtocolHandler.h"
#include "nsResProtocolHandler.h"
#include "mozilla/net/ExtensionProtocolHandler.h"
#include "mozilla/net/PageThumbProtocolHandler.h"
#include "mozilla/net/SFVService.h"
#include <limits>
#include "nsIXPConnect.h"
#include "nsParserConstants.h"
#include "nsCRT.h"
#include "nsServiceManagerUtils.h"
#include "mozilla/dom/MediaList.h"
#include "MediaContainerType.h"
#include "DecoderTraits.h"
#include "imgLoader.h"

#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;
  io = mozilla::components::IO::Service();
  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(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 ||
       aType == nsIContentPolicy::TYPE_INTERNAL_WORKER_STATIC_MODULE)) {
    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 loadingOriginNoSuffix;
    MOZ_ALWAYS_SUCCEEDS(
        aLoadingPrincipal->GetOriginNoSuffix(loadingOriginNoSuffix));

    nsAutoCString clientOriginNoSuffix;
    MOZ_ALWAYS_SUCCEEDS(
        clientPrincipal->GetOriginNoSuffix(clientOriginNoSuffix));

    // The client principal will have the partitionKey set if it's in a third
    // party context, but the loading principal won't. So, we ignore he
    // partitionKey when doing the verification here.
    MOZ_DIAGNOSTIC_ASSERT(loadingOriginNoSuffix == clientOriginNoSuffix);
    MOZ_DIAGNOSTIC_ASSERT(
        aLoadingPrincipal->OriginAttributesRef().EqualsIgnoringPartitionKey(
            clientPrincipal->OriginAttributesRef()));
  }
#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;
  }
  nsCOMPtr<nsILoadInfo> loadInfo = aChannel->LoadInfo();
  if (nsContentUtils::HtmlObjectContentTypeForMIMEType(
          mimeType, loadInfo->GetSandboxFlags()) ==
      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 previously had a lot
  // of XPCOM overhead involved.  We optimize the protocols that matter for Web
  // pages (HTTP and HTTPS) by hardcoding their default ports here.
  //
  // XXX: This might not be necessary for performance anymore.
  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;

  int32_t port;
  rv = ioService->GetDefaultPort(scheme, &port);
  return NS_SUCCEEDED(rv) ? port : -1;
}

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 */,
    nsISerialEventTarget* 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 = new nsSyncStreamListener();
  nsresult rv = listener->GetInputStream(stream);
  if (NS_SUCCEEDED(rv)) {
    listener.forget(result);
  }
  return rv;
}

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 = channel->AsyncOpen(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;
  pps = mozilla::components::ProtocolProxy::Service(&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;

  if (nsCOMPtr<nsIPropertyBag2> props = do_QueryInterface(channel)) {
    // 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;
    nsCOMPtr<nsIURI> uri(
        do_GetProperty(props, u"docshell.internalReferrer"_ns, &rv));
    if (NS_SUCCEEDED(rv)) {
      uri.forget(referrer);
      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;
  nsCOMPtr<nsINetUtil> util;

  io = mozilla::components::IO::Service();
  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_NewLocalFileRandomAccessStream(nsIRandomAccessStream** result,
                                           nsIFile* file,
                                           int32_t ioFlags /* = -1 */,
                                           int32_t perm /* = -1 */,
                                           int32_t behaviorFlags /* = 0 */) {
  nsCOMPtr<nsIFileRandomAccessStream> stream = new nsFileRandomAccessStream();
  nsresult rv = stream->Init(file, ioFlags, perm, behaviorFlags);
  if (NS_SUCCEEDED(rv)) {
    stream.forget(result);
  }
  return rv;
}

mozilla::Result<nsCOMPtr<nsIRandomAccessStream>, nsresult>
NS_NewLocalFileRandomAccessStream(nsIFile* file, int32_t ioFlags /* = -1 */,
                                  int32_t perm /* = -1 */,
                                  int32_t behaviorFlags /* = 0 */) {
  nsCOMPtr<nsIRandomAccessStream> stream;
  const nsresult rv = NS_NewLocalFileRandomAccessStream(
      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(
      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;
      target = mozilla::components::StreamTransport::Service();
      if (!target) {
        return NS_ERROR_FAILURE;
      }

      mTaskQueue = TaskQueue::Create(target.forget(), "nsNetUtil:BufferWriter");
    }

    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 MOZ_UNANNOTATED;

  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) {
  return NS_MutateURI(new nsStandardURL::Mutator())
      .Apply(&nsIStandardURLMutator::Init, nsIStandardURL::URLTYPE_AUTHORITY,
             aDefaultPort, aSpec, aCharset, aBaseURI, nullptr)
      .Finalize(aURI);
}

nsresult NS_GetSpecWithNSURLEncoding(nsACString& aResult,
                                     const nsACString& aSpec) {
  nsCOMPtr<nsIURI> uri;
  nsresult rv = NS_NewURIWithNSURLEncoding(getter_AddRefs(uri), aSpec);
  NS_ENSURE_SUCCESS(rv, rv);
  return uri->GetAsciiSpec(aResult);
}

nsresult NS_NewURIWithNSURLEncoding(nsIURI** aResult, const nsACString& aSpec) {
  nsCOMPtr<nsIURI> uri;
  nsresult rv = NS_NewURI(getter_AddRefs(uri), aSpec);
  NS_ENSURE_SUCCESS(rv, rv);

  // Escape the ref portion of the URL. NSURL is more strict about which
  // characters in the URL must be % encoded. For example, an unescaped '#'
  // to indicate the beginning of the ref component is accepted by NSURL, but
  // '#' characters in the ref must be escaped. Also adds encoding for other
  // characters not accepted by NSURL in the ref such as '{', '|', '}', and '^'.
  // The ref returned from GetRef() does not include the leading '#'.
  nsAutoCString ref, escapedRef;
  if (NS_SUCCEEDED(uri->GetRef(ref)) && !ref.IsEmpty()) {
    if (!NS_Escape(ref, escapedRef, url_NSURLRef)) {
      return NS_ERROR_INVALID_ARG;
    }
    rv = NS_MutateURI(uri).SetRef(escapedRef).Finalize(uri);
    NS_ENSURE_SUCCESS(rv, rv);
  }

  uri.forget(aResult);
  return NS_OK;
}

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 */) {
  // we don't expect any other processes than: socket, content or parent
  // to be able to create a URL
  MOZ_ASSERT(XRE_IsSocketProcess() || XRE_IsContentProcess() ||
             XRE_IsParentProcess());
  TlsAutoIncrement<decltype(gTlsURLRecursionCount)> inc(gTlsURLRecursionCount);
  if (inc.value() >= MAX_RECURSION_COUNT) {
    return NS_ERROR_MALFORMED_URI;
  }

  nsCOMPtr<nsIIOService> ioService = do_GetIOService();
  if (!ioService) {
    // Individual protocol handlers unfortunately rely on the ioservice, let's
    // return an error here instead of causing unpredictable crashes later.
    return NS_ERROR_NOT_AVAILABLE;
  }

  if (StaticPrefs::network_url_max_length() &&
      aSpec.Length() > StaticPrefs::network_url_max_length()) {
    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 encoding is not UTF-8 and url is not special or url’s scheme is "ws" or
  // "wss" then set encoding to UTF-8.
  if (aCharset && !scheme.IsEmpty() &&
      (scheme.EqualsLiteral("ws") || scheme.EqualsLiteral("wss") ||
       !SchemeIsSpecial(scheme))) {
    aCharset = "UTF-8";
  }

  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("file")) {
    return NS_MutateURI(new nsStandardURL::Mutator())
        .Apply(&nsIFileURLMutator::MarkFileURL)
        .Apply(&nsIStandardURLMutator::Init,
               nsIStandardURL::URLTYPE_NO_AUTHORITY, -1, aSpec, aCharset,
               aBaseURI, 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("cached-favicon")) {
    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") || scheme.EqualsLiteral("uuid")) {
    return NS_MutateURI(new nsStandardURL::Mutator())
        .Apply(&nsIStandardURLMutator::Init, nsIStandardURL::URLTYPE_AUTHORITY,
               0, aSpec, aCharset, aBaseURI, 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);
  }

--> --------------------

--> maximum size reached

--> --------------------

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