caps/ContentPrincipal.cpp
author Alastor Wu <alwu@mozilla.com>
Tue, 05 Mar 2019 02:06:22 +0000
changeset 516285 dc39216dfad387efd439083045062e323869a428
parent 513029 25334f588aa4b005e7a96d975dd14831fb738a24
child 518482 54964c38d7902f71e0d821b22f8acf1206bdf957
permissions -rw-r--r--
Bug 1530220 - part1 : allow some non-printalble keys as supported user gesture inputs to activate document. r=masayuki,cpearce a=lizzard `carriage return` and `space` are common keys which user might use to start media, so we should take account them as supported user gesture inputs. As their pseudo char code are zero, we have to check their key code in order to distinguish them from other controls keys such as shift, alt... Differential Revision: https://phabricator.services.mozilla.com/D21253

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 sw=2 et tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "ContentPrincipal.h"

#include "mozIThirdPartyUtil.h"
#include "nsContentUtils.h"
#include "nscore.h"
#include "nsScriptSecurityManager.h"
#include "nsString.h"
#include "nsReadableUtils.h"
#include "pratom.h"
#include "nsIURI.h"
#include "nsIURL.h"
#include "nsIStandardURL.h"
#include "nsIURIWithSpecialOrigin.h"
#include "nsIURIMutator.h"
#include "nsJSPrincipals.h"
#include "nsIEffectiveTLDService.h"
#include "nsIClassInfoImpl.h"
#include "nsIObjectInputStream.h"
#include "nsIObjectOutputStream.h"
#include "nsIProtocolHandler.h"
#include "nsError.h"
#include "nsIContentSecurityPolicy.h"
#include "nsNetCID.h"
#include "js/Wrapper.h"

#include "mozilla/dom/BlobURLProtocolHandler.h"
#include "mozilla/dom/nsCSPContext.h"
#include "mozilla/dom/ScriptSettings.h"
#include "mozilla/ClearOnShutdown.h"
#include "mozilla/ExtensionPolicyService.h"
#include "mozilla/Preferences.h"
#include "mozilla/HashFunctions.h"

using namespace mozilla;

static inline ExtensionPolicyService& EPS() {
  return ExtensionPolicyService::GetSingleton();
}

NS_IMPL_CLASSINFO(ContentPrincipal, nullptr, nsIClassInfo::MAIN_THREAD_ONLY,
                  NS_PRINCIPAL_CID)
NS_IMPL_QUERY_INTERFACE_CI(ContentPrincipal, nsIPrincipal, nsISerializable)
NS_IMPL_CI_INTERFACE_GETTER(ContentPrincipal, nsIPrincipal, nsISerializable)

ContentPrincipal::ContentPrincipal() : BasePrincipal(eCodebasePrincipal) {}

ContentPrincipal::~ContentPrincipal() {
  // let's clear the principal within the csp to avoid a tangling pointer
  if (mCSP) {
    static_cast<nsCSPContext*>(mCSP.get())->clearLoadingPrincipal();
  }
}

nsresult ContentPrincipal::Init(nsIURI* aCodebase,
                                const OriginAttributes& aOriginAttributes,
                                const nsACString& aOriginNoSuffix) {
  NS_ENSURE_ARG(aCodebase);

  // Assert that the URI we get here isn't any of the schemes that we know we
  // should not get here.  These schemes always either inherit their principal
  // or fall back to a null principal.  These are schemes which return
  // URI_INHERITS_SECURITY_CONTEXT from their protocol handler's
  // GetProtocolFlags function.
  bool hasFlag;
  Unused << hasFlag;  // silence possible compiler warnings.
  MOZ_DIAGNOSTIC_ASSERT(
      NS_SUCCEEDED(NS_URIChainHasFlags(
          aCodebase, nsIProtocolHandler::URI_INHERITS_SECURITY_CONTEXT,
          &hasFlag)) &&
      !hasFlag);

  mCodebase = aCodebase;
  FinishInit(aOriginNoSuffix, aOriginAttributes);

  return NS_OK;
}

nsresult ContentPrincipal::Init(ContentPrincipal* aOther,
                                const OriginAttributes& aOriginAttributes) {
  NS_ENSURE_ARG(aOther);

  mCodebase = aOther->mCodebase;
  FinishInit(aOther, aOriginAttributes);

  mDomain = aOther->mDomain;
  mAddon = aOther->mAddon;
  return NS_OK;
}

nsresult ContentPrincipal::GetScriptLocation(nsACString& aStr) {
  return mCodebase->GetSpec(aStr);
}

/* static */ nsresult ContentPrincipal::GenerateOriginNoSuffixFromURI(
    nsIURI* aURI, nsACString& aOriginNoSuffix) {
  if (!aURI) {
    return NS_ERROR_FAILURE;
  }

  nsCOMPtr<nsIURI> origin = NS_GetInnermostURI(aURI);
  if (!origin) {
    return NS_ERROR_FAILURE;
  }

  MOZ_ASSERT(!NS_IsAboutBlank(origin),
             "The inner URI for about:blank must be moz-safe-about:blank");

  // Handle non-strict file:// uris.
  if (!nsScriptSecurityManager::GetStrictFileOriginPolicy() &&
      NS_URIIsLocalFile(origin)) {
    // If strict file origin policy is not in effect, all local files are
    // considered to be same-origin, so return a known dummy origin here.
    aOriginNoSuffix.AssignLiteral("file://UNIVERSAL_FILE_URI_ORIGIN");
    return NS_OK;
  }

  nsresult rv;
// NB: This is only compiled for Thunderbird/Suite.
#if IS_ORIGIN_IS_FULL_SPEC_DEFINED
  bool fullSpec = false;
  rv = NS_URIChainHasFlags(origin, nsIProtocolHandler::ORIGIN_IS_FULL_SPEC,
                           &fullSpec);
  NS_ENSURE_SUCCESS(rv, rv);
  if (fullSpec) {
    return origin->GetAsciiSpec(aOriginNoSuffix);
  }
#endif

  // We want the invariant that prinA.origin == prinB.origin i.f.f.
  // prinA.equals(prinB). However, this requires that we impose certain
  // constraints on the behavior and origin semantics of principals, and in
  // particular, forbid creating origin strings for principals whose equality
  // constraints are not expressible as strings (i.e. object equality).
  // Moreover, we want to forbid URIs containing the magic "^" we use as a
  // separating character for origin attributes.
  //
  // These constraints can generally be achieved by restricting .origin to
  // nsIStandardURL-based URIs, but there are a few other URI schemes that we
  // need to handle.
  bool isBehaved;
  if ((NS_SUCCEEDED(origin->SchemeIs("about", &isBehaved)) && isBehaved) ||
      (NS_SUCCEEDED(origin->SchemeIs("moz-safe-about", &isBehaved)) &&
       isBehaved &&
       // We generally consider two about:foo origins to be same-origin, but
       // about:blank is special since it can be generated from different
       // sources. We check for moz-safe-about:blank since origin is an
       // innermost URI.
       !origin->GetSpecOrDefault().EqualsLiteral("moz-safe-about:blank")) ||
      (NS_SUCCEEDED(origin->SchemeIs("indexeddb", &isBehaved)) && isBehaved)) {
    rv = origin->GetAsciiSpec(aOriginNoSuffix);
    NS_ENSURE_SUCCESS(rv, rv);

    int32_t pos = aOriginNoSuffix.FindChar('?');
    int32_t hashPos = aOriginNoSuffix.FindChar('#');

    if (hashPos != kNotFound && (pos == kNotFound || hashPos < pos)) {
      pos = hashPos;
    }

    if (pos != kNotFound) {
      aOriginNoSuffix.Truncate(pos);
    }

    // These URIs could technically contain a '^', but they never should.
    if (NS_WARN_IF(aOriginNoSuffix.FindChar('^', 0) != -1)) {
      aOriginNoSuffix.Truncate();
      return NS_ERROR_FAILURE;
    }
    return NS_OK;
  }

  // This URL can be a blobURL. In this case, we should use the 'parent'
  // principal instead.
  nsCOMPtr<nsIPrincipal> blobPrincipal;
  if (dom::BlobURLProtocolHandler::GetBlobURLPrincipal(
          origin, getter_AddRefs(blobPrincipal))) {
    MOZ_ASSERT(blobPrincipal);
    return blobPrincipal->GetOriginNoSuffix(aOriginNoSuffix);
  }

  // If we reached this branch, we can only create an origin if we have a
  // nsIStandardURL.  So, we query to a nsIStandardURL, and fail if we aren't
  // an instance of an nsIStandardURL nsIStandardURLs have the good property
  // of escaping the '^' character in their specs, which means that we can be
  // sure that the caret character (which is reserved for delimiting the end
  // of the spec, and the beginning of the origin attributes) is not present
  // in the origin string
  nsCOMPtr<nsIStandardURL> standardURL = do_QueryInterface(origin);
  if (!standardURL) {
    return NS_ERROR_FAILURE;
  }

  // See whether we have a useful hostPort. If we do, use that.
  nsAutoCString hostPort;
  bool isChrome = false;
  rv = origin->SchemeIs("chrome", &isChrome);
  NS_ENSURE_SUCCESS(rv, rv);
  if (!isChrome) {
    rv = origin->GetAsciiHostPort(hostPort);
    NS_ENSURE_SUCCESS(rv, rv);
  }
  if (!hostPort.IsEmpty()) {
    rv = origin->GetScheme(aOriginNoSuffix);
    NS_ENSURE_SUCCESS(rv, rv);
    aOriginNoSuffix.AppendLiteral("://");
    aOriginNoSuffix.Append(hostPort);
    return NS_OK;
  }

  rv = aURI->GetAsciiSpec(aOriginNoSuffix);
  NS_ENSURE_SUCCESS(rv, rv);

  // The origin, when taken from the spec, should not contain the ref part of
  // the URL.

  int32_t pos = aOriginNoSuffix.FindChar('?');
  int32_t hashPos = aOriginNoSuffix.FindChar('#');

  if (hashPos != kNotFound && (pos == kNotFound || hashPos < pos)) {
    pos = hashPos;
  }

  if (pos != kNotFound) {
    aOriginNoSuffix.Truncate(pos);
  }

  return NS_OK;
}

bool ContentPrincipal::SubsumesInternal(
    nsIPrincipal* aOther,
    BasePrincipal::DocumentDomainConsideration aConsideration) {
  MOZ_ASSERT(aOther);

  // For ContentPrincipal, Subsumes is equivalent to Equals.
  if (aOther == this) {
    return true;
  }

  // If either the subject or the object has changed its principal by
  // explicitly setting document.domain then the other must also have
  // done so in order to be considered the same origin. This prevents
  // DNS spoofing based on document.domain (154930)
  nsresult rv;
  if (aConsideration == ConsiderDocumentDomain) {
    // Get .domain on each principal.
    nsCOMPtr<nsIURI> thisDomain, otherDomain;
    GetDomain(getter_AddRefs(thisDomain));
    aOther->GetDomain(getter_AddRefs(otherDomain));

    // If either has .domain set, we have equality i.f.f. the domains match.
    // Otherwise, we fall through to the non-document-domain-considering case.
    if (thisDomain || otherDomain) {
      bool isMatch =
          nsScriptSecurityManager::SecurityCompareURIs(thisDomain, otherDomain);
#ifdef DEBUG
      if (isMatch) {
        nsAutoCString thisSiteOrigin, otherSiteOrigin;
        MOZ_ALWAYS_SUCCEEDS(GetSiteOrigin(thisSiteOrigin));
        MOZ_ALWAYS_SUCCEEDS(aOther->GetSiteOrigin(otherSiteOrigin));
        MOZ_ASSERT(
            thisSiteOrigin == otherSiteOrigin,
            "SubsumesConsideringDomain passed with mismatched siteOrigin!");
      }
#endif
      return isMatch;
    }
  }

  nsCOMPtr<nsIURI> otherURI;
  rv = aOther->GetURI(getter_AddRefs(otherURI));
  NS_ENSURE_SUCCESS(rv, false);

  // Compare codebases.
  return nsScriptSecurityManager::SecurityCompareURIs(mCodebase, otherURI);
}

NS_IMETHODIMP
ContentPrincipal::GetURI(nsIURI** aURI) {
  NS_ADDREF(*aURI = mCodebase);
  return NS_OK;
}

bool ContentPrincipal::MayLoadInternal(nsIURI* aURI) {
  MOZ_ASSERT(aURI);

#if defined(MOZ_THUNDERBIRD) || defined(MOZ_SUITE)
  nsCOMPtr<nsIURIWithSpecialOrigin> uriWithSpecialOrigin =
      do_QueryInterface(aURI);
  if (uriWithSpecialOrigin) {
    nsCOMPtr<nsIURI> origin;
    nsresult rv = uriWithSpecialOrigin->GetOrigin(getter_AddRefs(origin));
    if (NS_WARN_IF(NS_FAILED(rv))) {
      return false;
    }
    MOZ_ASSERT(origin);
    OriginAttributes attrs;
    RefPtr<BasePrincipal> principal =
        BasePrincipal::CreateCodebasePrincipal(origin, attrs);
    return nsIPrincipal::Subsumes(principal);
  }
#endif

  nsCOMPtr<nsIPrincipal> blobPrincipal;
  if (dom::BlobURLProtocolHandler::GetBlobURLPrincipal(
          aURI, getter_AddRefs(blobPrincipal))) {
    MOZ_ASSERT(blobPrincipal);
    return nsIPrincipal::Subsumes(blobPrincipal);
  }

  // If this principal is associated with an addon, check whether that addon
  // has been given permission to load from this domain.
  if (AddonAllowsLoad(aURI)) {
    return true;
  }

  if (nsScriptSecurityManager::SecurityCompareURIs(mCodebase, aURI)) {
    return true;
  }

  // If strict file origin policy is in effect, local files will always fail
  // SecurityCompareURIs unless they are identical. Explicitly check file origin
  // policy, in that case.
  if (nsScriptSecurityManager::GetStrictFileOriginPolicy() &&
      NS_URIIsLocalFile(aURI) &&
      NS_RelaxStrictFileOriginPolicy(aURI, mCodebase)) {
    return true;
  }

  return false;
}

uint32_t ContentPrincipal::GetHashValue() {
  MOZ_ASSERT(mCodebase, "Need a codebase");

  return nsScriptSecurityManager::HashPrincipalByOrigin(this);
}

NS_IMETHODIMP
ContentPrincipal::GetDomain(nsIURI** aDomain) {
  if (!mDomain) {
    *aDomain = nullptr;
    return NS_OK;
  }

  NS_ADDREF(*aDomain = mDomain);
  return NS_OK;
}

namespace {

struct CompartmentsWithPrincipal : public js::CompartmentFilter {
  nsIPrincipal* principal;

  explicit CompartmentsWithPrincipal(nsIPrincipal* p) : principal(p) {}

  virtual bool match(JS::Compartment* c) const override {
    return xpc::GetCompartmentPrincipal(c) == principal;
  }
};

}  // namespace

NS_IMETHODIMP
ContentPrincipal::SetDomain(nsIURI* aDomain) {
  MOZ_ASSERT(aDomain);

  mDomain = aDomain;
  SetHasExplicitDomain();

  // Recompute all wrappers between compartments using this principal and other
  // non-chrome compartments.
  AutoSafeJSContext cx;
  bool success = js::RecomputeWrappers(cx, js::ContentCompartmentsOnly(),
                                       CompartmentsWithPrincipal(this));
  NS_ENSURE_TRUE(success, NS_ERROR_FAILURE);
  success = js::RecomputeWrappers(cx, CompartmentsWithPrincipal(this),
                                  js::ContentCompartmentsOnly());
  NS_ENSURE_TRUE(success, NS_ERROR_FAILURE);

  // Set the changed-document-domain flag on compartments containing realms
  // using this principal.
  auto cb = [](JSContext*, void*, JS::Handle<JS::Realm*> aRealm) {
    JS::Compartment* comp = JS::GetCompartmentForRealm(aRealm);
    xpc::SetCompartmentChangedDocumentDomain(comp);
  };
  JSPrincipals* principals =
      nsJSPrincipals::get(static_cast<nsIPrincipal*>(this));
  JS::IterateRealmsWithPrincipals(cx, principals, nullptr, cb);

  return NS_OK;
}

static nsresult GetSpecialBaseDomain(const nsCOMPtr<nsIURI>& aCodebase,
                                     bool* aHandled, nsACString& aBaseDomain) {
  *aHandled = false;

  // Special handling for a file URI.
  if (NS_URIIsLocalFile(aCodebase)) {
    // If strict file origin policy is not in effect, all local files are
    // considered to be same-origin, so return a known dummy domain here.
    if (!nsScriptSecurityManager::GetStrictFileOriginPolicy()) {
      *aHandled = true;
      aBaseDomain.AssignLiteral("UNIVERSAL_FILE_URI_ORIGIN");
      return NS_OK;
    }

    // Otherwise, we return the file path.
    nsCOMPtr<nsIURL> url = do_QueryInterface(aCodebase);

    if (url) {
      *aHandled = true;
      return url->GetFilePath(aBaseDomain);
    }
  }

  bool hasNoRelativeFlag;
  nsresult rv = NS_URIChainHasFlags(
      aCodebase, nsIProtocolHandler::URI_NORELATIVE, &hasNoRelativeFlag);
  if (NS_WARN_IF(NS_FAILED(rv))) {
    return rv;
  }

  if (hasNoRelativeFlag) {
    *aHandled = true;
    return aCodebase->GetSpec(aBaseDomain);
  }

  return NS_OK;
}

NS_IMETHODIMP
ContentPrincipal::GetBaseDomain(nsACString& aBaseDomain) {
  // Handle some special URIs first.
  bool handled;
  nsresult rv = GetSpecialBaseDomain(mCodebase, &handled, aBaseDomain);
  NS_ENSURE_SUCCESS(rv, rv);

  if (handled) {
    return NS_OK;
  }

  // For everything else, we ask the TLD service via the ThirdPartyUtil.
  nsCOMPtr<mozIThirdPartyUtil> thirdPartyUtil =
      do_GetService(THIRDPARTYUTIL_CONTRACTID);
  if (!thirdPartyUtil) {
    return NS_ERROR_FAILURE;
  }

  return thirdPartyUtil->GetBaseDomain(mCodebase, aBaseDomain);
}

NS_IMETHODIMP
ContentPrincipal::GetSiteOrigin(nsACString& aSiteOrigin) {
  // Handle some special URIs first.
  nsAutoCString baseDomain;
  bool handled;
  nsresult rv = GetSpecialBaseDomain(mCodebase, &handled, baseDomain);
  NS_ENSURE_SUCCESS(rv, rv);

  if (handled) {
    // This is a special URI ("file:", "about:", "view-source:", etc). Just
    // return the origin.
    return GetOrigin(aSiteOrigin);
  }

  // For everything else, we ask the TLD service. Note that, unlike in
  // GetBaseDomain, we don't use ThirdPartyUtil.getBaseDomain because if the
  // host is an IP address that returns the raw address and we can't use it with
  // SetHost below because SetHost expects '[' and ']' around IPv6 addresses.
  // See bug 1491728.
  nsCOMPtr<nsIEffectiveTLDService> tldService =
      do_GetService(NS_EFFECTIVETLDSERVICE_CONTRACTID);
  if (!tldService) {
    return NS_ERROR_FAILURE;
  }

  bool gotBaseDomain = false;
  rv = tldService->GetBaseDomain(mCodebase, 0, baseDomain);
  if (NS_SUCCEEDED(rv)) {
    gotBaseDomain = true;
  } else {
    // If this is an IP address or something like "localhost", we just continue
    // with gotBaseDomain = false.
    if (rv != NS_ERROR_HOST_IS_IP_ADDRESS &&
        rv != NS_ERROR_INSUFFICIENT_DOMAIN_LEVELS) {
      return rv;
    }
  }

  // NOTE: Calling `SetHostPort` with a portless domain is insufficient to clear
  // the port, so an extra `SetPort` call has to be made.
  nsCOMPtr<nsIURI> siteUri;
  NS_MutateURI mutator(mCodebase);
  mutator.SetUserPass(EmptyCString()).SetPort(-1);
  if (gotBaseDomain) {
    mutator.SetHost(baseDomain);
  }
  rv = mutator.Finalize(siteUri);
  MOZ_ASSERT(NS_SUCCEEDED(rv), "failed to create siteUri");
  NS_ENSURE_SUCCESS(rv, rv);

  rv = GenerateOriginNoSuffixFromURI(siteUri, aSiteOrigin);
  MOZ_ASSERT(NS_SUCCEEDED(rv), "failed to create siteOriginNoSuffix");
  NS_ENSURE_SUCCESS(rv, rv);

  nsAutoCString suffix;
  rv = GetOriginSuffix(suffix);
  MOZ_ASSERT(NS_SUCCEEDED(rv), "failed to create suffix");
  NS_ENSURE_SUCCESS(rv, rv);

  aSiteOrigin.Append(suffix);
  return NS_OK;
}

nsresult ContentPrincipal::GetSiteIdentifier(SiteIdentifier& aSite) {
  nsCString siteOrigin;
  nsresult rv = GetSiteOrigin(siteOrigin);
  NS_ENSURE_SUCCESS(rv, rv);

  RefPtr<BasePrincipal> principal = CreateCodebasePrincipal(siteOrigin);
  if (!principal) {
    NS_WARNING("could not instantiate codebase principal");
    return NS_ERROR_FAILURE;
  }

  aSite.Init(principal);
  return NS_OK;
}

WebExtensionPolicy* ContentPrincipal::AddonPolicy() {
  if (!mAddon.isSome()) {
    NS_ENSURE_TRUE(mCodebase, nullptr);

    bool isMozExt;
    if (NS_SUCCEEDED(mCodebase->SchemeIs("moz-extension", &isMozExt)) &&
        isMozExt) {
      mAddon.emplace(EPS().GetByURL(mCodebase.get()));
    } else {
      mAddon.emplace(nullptr);
    }
  }

  return mAddon.value();
}

NS_IMETHODIMP
ContentPrincipal::GetAddonId(nsAString& aAddonId) {
  auto policy = AddonPolicy();
  if (policy) {
    policy->GetId(aAddonId);
  } else {
    aAddonId.Truncate();
  }
  return NS_OK;
}

NS_IMETHODIMP
ContentPrincipal::Read(nsIObjectInputStream* aStream) {
  nsCOMPtr<nsISupports> supports;
  nsCOMPtr<nsIURI> codebase;
  nsresult rv = NS_ReadOptionalObject(aStream, true, getter_AddRefs(supports));
  if (NS_FAILED(rv)) {
    return rv;
  }

  codebase = do_QueryInterface(supports);
  // Enforce re-parsing about: URIs so that if they change, we continue to use
  // their new principals correctly.
  bool isAbout = false;
  if (NS_SUCCEEDED(codebase->SchemeIs("about", &isAbout)) && isAbout) {
    nsAutoCString spec;
    codebase->GetSpec(spec);
    NS_ENSURE_SUCCESS(NS_NewURI(getter_AddRefs(codebase), spec),
                      NS_ERROR_FAILURE);
  }

  nsCOMPtr<nsIURI> domain;
  rv = NS_ReadOptionalObject(aStream, true, getter_AddRefs(supports));
  if (NS_FAILED(rv)) {
    return rv;
  }

  domain = do_QueryInterface(supports);

  nsAutoCString suffix;
  rv = aStream->ReadCString(suffix);
  NS_ENSURE_SUCCESS(rv, rv);

  OriginAttributes attrs;
  bool ok = attrs.PopulateFromSuffix(suffix);
  NS_ENSURE_TRUE(ok, NS_ERROR_FAILURE);

  rv = NS_ReadOptionalObject(aStream, true, getter_AddRefs(supports));
  NS_ENSURE_SUCCESS(rv, rv);

  nsAutoCString originNoSuffix;
  rv = GenerateOriginNoSuffixFromURI(codebase, originNoSuffix);
  NS_ENSURE_SUCCESS(rv, rv);

  rv = Init(codebase, attrs, originNoSuffix);
  NS_ENSURE_SUCCESS(rv, rv);

  mCSP = do_QueryInterface(supports, &rv);
  // make sure setRequestContext is called after Init(),
  // to make sure  the principals URI been initalized.
  if (mCSP) {
    mCSP->SetRequestContext(nullptr, this);
  }

  // Note: we don't call SetDomain here because we don't need the wrapper
  // recomputation code there (we just created this principal).
  mDomain = domain;
  if (mDomain) {
    SetHasExplicitDomain();
  }

  return NS_OK;
}

NS_IMETHODIMP
ContentPrincipal::Write(nsIObjectOutputStream* aStream) {
  NS_ENSURE_STATE(mCodebase);
  nsresult rv = NS_WriteOptionalCompoundObject(aStream, mCodebase,
                                               NS_GET_IID(nsIURI), true);
  if (NS_FAILED(rv)) {
    return rv;
  }

  rv = NS_WriteOptionalCompoundObject(aStream, mDomain, NS_GET_IID(nsIURI),
                                      true);
  if (NS_FAILED(rv)) {
    return rv;
  }

  nsAutoCString suffix;
  OriginAttributesRef().CreateSuffix(suffix);

  rv = aStream->WriteStringZ(suffix.get());
  NS_ENSURE_SUCCESS(rv, rv);

  rv = NS_WriteOptionalCompoundObject(
      aStream, mCSP, NS_GET_IID(nsIContentSecurityPolicy), true);
  if (NS_FAILED(rv)) {
    return rv;
  }

  return NS_OK;
}