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-rw-r--r--caps/ContentPrincipal.cpp792
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diff --git a/caps/ContentPrincipal.cpp b/caps/ContentPrincipal.cpp
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+++ b/caps/ContentPrincipal.cpp
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+/* -*- 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/RealmIterators.h"
+#include "js/Wrapper.h"
+
+#include "mozilla/dom/BlobURLProtocolHandler.h"
+#include "mozilla/dom/ScriptSettings.h"
+#include "mozilla/ClearOnShutdown.h"
+#include "mozilla/ExtensionPolicyService.h"
+#include "mozilla/Preferences.h"
+#include "mozilla/HashFunctions.h"
+
+#include "nsSerializationHelper.h"
+
+#include "js/JSON.h"
+#include "ContentPrincipalJSONHandler.h"
+
+using namespace mozilla;
+
+NS_IMPL_CLASSINFO(ContentPrincipal, nullptr, 0, NS_PRINCIPAL_CID)
+NS_IMPL_QUERY_INTERFACE_CI(ContentPrincipal, nsIPrincipal)
+NS_IMPL_CI_INTERFACE_GETTER(ContentPrincipal, nsIPrincipal)
+
+ContentPrincipal::ContentPrincipal(nsIURI* aURI,
+ const OriginAttributes& aOriginAttributes,
+ const nsACString& aOriginNoSuffix,
+ nsIURI* aInitialDomain)
+ : BasePrincipal(eContentPrincipal, aOriginNoSuffix, aOriginAttributes),
+ mURI(aURI),
+ mDomain(aInitialDomain) {
+ if (mDomain) {
+ // We're just creating the principal, so no need to re-compute wrappers.
+ SetHasExplicitDomain();
+ }
+
+#ifdef MOZ_DIAGNOSTIC_ASSERT_ENABLED
+ // 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 = false;
+ MOZ_DIAGNOSTIC_ASSERT(
+ NS_SUCCEEDED(NS_URIChainHasFlags(
+ aURI, nsIProtocolHandler::URI_INHERITS_SECURITY_CONTEXT, &hasFlag)) &&
+ !hasFlag);
+#endif
+}
+
+ContentPrincipal::ContentPrincipal(ContentPrincipal* aOther,
+ const OriginAttributes& aOriginAttributes)
+ : BasePrincipal(aOther, aOriginAttributes),
+ mURI(aOther->mURI),
+ mDomain(aOther->mDomain),
+ mAddon(aOther->mAddon) {}
+
+ContentPrincipal::~ContentPrincipal() = default;
+
+nsresult ContentPrincipal::GetScriptLocation(nsACString& aStr) {
+ return mURI->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.
+ if (origin->SchemeIs("about") ||
+ (origin->SchemeIs("moz-safe-about") &&
+ // 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.
+ !StringBeginsWith(origin->GetSpecOrDefault(),
+ "moz-safe-about:blank"_ns))) {
+ 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;
+ if (!origin->SchemeIs("chrome")) {
+ 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)
+ 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;
+ }
+ }
+
+ // Do a fast check (including origin attributes) or a slow uri comparison.
+ return FastEquals(aOther) || aOther->IsSameOrigin(mURI);
+}
+
+NS_IMETHODIMP
+ContentPrincipal::GetURI(nsIURI** aURI) {
+ *aURI = do_AddRef(mURI).take();
+ 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::CreateContentPrincipal(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(mURI, 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, mURI)) {
+ return true;
+ }
+
+ return false;
+}
+
+uint32_t ContentPrincipal::GetHashValue() {
+ MOZ_ASSERT(mURI, "Need a principal URI");
+
+ nsCOMPtr<nsIURI> uri;
+ GetDomain(getter_AddRefs(uri));
+ if (!uri) {
+ GetURI(getter_AddRefs(uri));
+ };
+ return NS_SecurityHashURI(uri);
+}
+
+NS_IMETHODIMP
+ContentPrincipal::GetDomain(nsIURI** aDomain) {
+ if (!GetHasExplicitDomain()) {
+ *aDomain = nullptr;
+ return NS_OK;
+ }
+
+ mozilla::MutexAutoLock lock(mMutex);
+ NS_ADDREF(*aDomain = mDomain);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+ContentPrincipal::SetDomain(nsIURI* aDomain) {
+ AssertIsOnMainThread();
+ MOZ_ASSERT(aDomain);
+
+ {
+ mozilla::MutexAutoLock lock(mMutex);
+ mDomain = aDomain;
+ SetHasExplicitDomain();
+ }
+
+ // Set the changed-document-domain flag on compartments containing realms
+ // using this principal.
+ auto cb = [](JSContext*, void*, JS::Realm* aRealm,
+ const JS::AutoRequireNoGC& nogc) {
+ JS::Compartment* comp = JS::GetCompartmentForRealm(aRealm);
+ xpc::SetCompartmentChangedDocumentDomain(comp);
+ };
+ JSPrincipals* principals =
+ nsJSPrincipals::get(static_cast<nsIPrincipal*>(this));
+
+ dom::AutoJSAPI jsapi;
+ jsapi.Init();
+ JS::IterateRealmsWithPrincipals(jsapi.cx(), principals, nullptr, cb);
+
+ return NS_OK;
+}
+
+static nsresult GetSpecialBaseDomain(const nsCOMPtr<nsIURI>& aURI,
+ bool* aHandled, nsACString& aBaseDomain) {
+ *aHandled = false;
+
+ // Special handling for a file URI.
+ if (NS_URIIsLocalFile(aURI)) {
+ // 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(aURI);
+
+ if (url) {
+ *aHandled = true;
+ return url->GetFilePath(aBaseDomain);
+ }
+ }
+
+ bool hasNoRelativeFlag;
+ nsresult rv = NS_URIChainHasFlags(aURI, nsIProtocolHandler::URI_NORELATIVE,
+ &hasNoRelativeFlag);
+ if (NS_WARN_IF(NS_FAILED(rv))) {
+ return rv;
+ }
+
+ // In case of FTP we want to get base domain via TLD service even if FTP
+ // protocol handler is disabled and the scheme is handled by external protocol
+ // handler which returns URI_NORELATIVE flag.
+ if (hasNoRelativeFlag && !aURI->SchemeIs("ftp")) {
+ *aHandled = true;
+ return aURI->GetSpec(aBaseDomain);
+ }
+
+ if (aURI->SchemeIs("indexeddb")) {
+ *aHandled = true;
+ return aURI->GetSpec(aBaseDomain);
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+ContentPrincipal::GetBaseDomain(nsACString& aBaseDomain) {
+ // Handle some special URIs first.
+ bool handled;
+ nsresult rv = GetSpecialBaseDomain(mURI, &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(mURI, aBaseDomain);
+}
+
+NS_IMETHODIMP
+ContentPrincipal::GetSiteOriginNoSuffix(nsACString& aSiteOrigin) {
+ nsresult rv = GetOriginNoSuffix(aSiteOrigin);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ // It is possible for two principals with the same origin to have different
+ // mURI values. In order to ensure that two principals with matching origins
+ // also have matching siteOrigins, we derive the siteOrigin entirely from the
+ // origin string and do not rely on mURI at all here.
+ nsCOMPtr<nsIURI> origin;
+ rv = NS_NewURI(getter_AddRefs(origin), aSiteOrigin);
+ if (NS_FAILED(rv)) {
+ // We got an error parsing the origin as a URI? siteOrigin == origin
+ // aSiteOrigin was already filled with `OriginNoSuffix`
+ return rv;
+ }
+
+ // Handle some special URIs first.
+ nsAutoCString baseDomain;
+ bool handled;
+ rv = GetSpecialBaseDomain(origin, &handled, baseDomain);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ if (handled) {
+ // This is a special URI ("file:", "about:", "view-source:", etc). Just
+ // return the origin.
+ return NS_OK;
+ }
+
+ // 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(origin, 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 &&
+ rv != NS_ERROR_INVALID_ARG) {
+ 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(origin);
+ mutator.SetUserPass(""_ns).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);
+
+ aSiteOrigin.Truncate();
+ rv = GenerateOriginNoSuffixFromURI(siteUri, aSiteOrigin);
+ MOZ_ASSERT(NS_SUCCEEDED(rv), "failed to create siteOriginNoSuffix");
+ return rv;
+}
+
+nsresult ContentPrincipal::GetSiteIdentifier(SiteIdentifier& aSite) {
+ nsCString siteOrigin;
+ nsresult rv = GetSiteOrigin(siteOrigin);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ RefPtr<BasePrincipal> principal = CreateContentPrincipal(siteOrigin);
+ if (!principal) {
+ NS_WARNING("could not instantiate content principal");
+ return NS_ERROR_FAILURE;
+ }
+
+ aSite.Init(principal);
+ return NS_OK;
+}
+
+RefPtr<extensions::WebExtensionPolicyCore> ContentPrincipal::AddonPolicyCore() {
+ mozilla::MutexAutoLock lock(mMutex);
+ if (!mAddon.isSome()) {
+ NS_ENSURE_TRUE(mURI, nullptr);
+
+ RefPtr<extensions::WebExtensionPolicyCore> core;
+ if (mURI->SchemeIs("moz-extension")) {
+ nsCString host;
+ NS_ENSURE_SUCCESS(mURI->GetHost(host), nullptr);
+ core = ExtensionPolicyService::GetCoreByHost(host);
+ }
+
+ mAddon.emplace(core);
+ }
+ return *mAddon;
+}
+
+NS_IMETHODIMP
+ContentPrincipal::GetAddonId(nsAString& aAddonId) {
+ if (RefPtr<extensions::WebExtensionPolicyCore> policy = AddonPolicyCore()) {
+ policy->Id()->ToString(aAddonId);
+ } else {
+ aAddonId.Truncate();
+ }
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+ContentPrincipal::Deserializer::Read(nsIObjectInputStream* aStream) {
+ MOZ_ASSERT(!mPrincipal);
+
+ nsCOMPtr<nsISupports> supports;
+ nsCOMPtr<nsIURI> principalURI;
+ nsresult rv = NS_ReadOptionalObject(aStream, true, getter_AddRefs(supports));
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+
+ principalURI = do_QueryInterface(supports);
+ // Enforce re-parsing about: URIs so that if they change, we continue to use
+ // their new principals correctly.
+ if (principalURI->SchemeIs("about")) {
+ nsAutoCString spec;
+ principalURI->GetSpec(spec);
+ NS_ENSURE_SUCCESS(NS_NewURI(getter_AddRefs(principalURI), 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);
+
+ // Since Bug 965637 we do not serialize the CSP within the
+ // Principal anymore. Nevertheless there might still be
+ // serialized Principals that do have a serialized CSP.
+ // For now, we just read the CSP here but do not actually
+ // consume it. Please note that we deliberately ignore
+ // the return value to avoid CSP deserialization problems.
+ // After Bug 1508939 we will have a new serialization for
+ // Principals which allows us to update the code here.
+ // Additionally, the format for serialized CSPs changed
+ // within Bug 965637 which also can cause failures within
+ // the CSP deserialization code.
+ Unused << NS_ReadOptionalObject(aStream, true, getter_AddRefs(supports));
+
+ nsAutoCString originNoSuffix;
+ rv = GenerateOriginNoSuffixFromURI(principalURI, originNoSuffix);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ mPrincipal =
+ new ContentPrincipal(principalURI, attrs, originNoSuffix, domain);
+ return NS_OK;
+}
+
+nsresult ContentPrincipal::WriteJSONInnerProperties(JSONWriter& aWriter) {
+ nsAutoCString principalURI;
+ nsresult rv = mURI->GetSpec(principalURI);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ // We turn each int enum field into a JSON string key of the object, aWriter
+ // is set up to be inside of the inner object that has stringified enum keys
+ // An example inner object might be:
+ //
+ // eURI eSuffix
+ // | |
+ // {"0": "https://mozilla.com", "2": "^privateBrowsingId=1"}
+ // | | | |
+ // ----------------------------- |
+ // | | |
+ // Key ----------------------
+ // |
+ // Value
+ WriteJSONProperty<eURI>(aWriter, principalURI);
+
+ if (GetHasExplicitDomain()) {
+ nsAutoCString domainStr;
+ {
+ MutexAutoLock lock(mMutex);
+ rv = mDomain->GetSpec(domainStr);
+ NS_ENSURE_SUCCESS(rv, rv);
+ }
+ WriteJSONProperty<eDomain>(aWriter, domainStr);
+ }
+
+ nsAutoCString suffix;
+ OriginAttributesRef().CreateSuffix(suffix);
+ if (suffix.Length() > 0) {
+ WriteJSONProperty<eSuffix>(aWriter, suffix);
+ }
+
+ return NS_OK;
+}
+
+bool ContentPrincipalJSONHandler::startObject() {
+ switch (mState) {
+ case State::Init:
+ mState = State::StartObject;
+ break;
+ default:
+ NS_WARNING("Unexpected object value");
+ mState = State::Error;
+ return false;
+ }
+
+ return true;
+}
+
+bool ContentPrincipalJSONHandler::propertyName(const JS::Latin1Char* name,
+ size_t length) {
+ switch (mState) {
+ case State::StartObject:
+ case State::AfterPropertyValue: {
+ if (length != 1) {
+ NS_WARNING(
+ nsPrintfCString("Unexpected property name length: %zu", length)
+ .get());
+ mState = State::Error;
+ return false;
+ }
+
+ char key = char(name[0]);
+ switch (key) {
+ case ContentPrincipal::URIKey:
+ mState = State::URIKey;
+ break;
+ case ContentPrincipal::DomainKey:
+ mState = State::DomainKey;
+ break;
+ case ContentPrincipal::SuffixKey:
+ mState = State::SuffixKey;
+ break;
+ default:
+ NS_WARNING(
+ nsPrintfCString("Unexpected property name: '%c'", key).get());
+ mState = State::Error;
+ return false;
+ }
+ break;
+ }
+ default:
+ NS_WARNING("Unexpected property name");
+ mState = State::Error;
+ return false;
+ }
+
+ return true;
+}
+
+bool ContentPrincipalJSONHandler::endObject() {
+ switch (mState) {
+ case State::AfterPropertyValue: {
+ MOZ_ASSERT(mPrincipalURI);
+ // NOTE: mDomain is optional.
+
+ nsAutoCString originNoSuffix;
+ nsresult rv = ContentPrincipal::GenerateOriginNoSuffixFromURI(
+ mPrincipalURI, originNoSuffix);
+ if (NS_FAILED(rv)) {
+ mState = State::Error;
+ return false;
+ }
+
+ mPrincipal =
+ new ContentPrincipal(mPrincipalURI, mAttrs, originNoSuffix, mDomain);
+ MOZ_ASSERT(mPrincipal);
+
+ mState = State::EndObject;
+ break;
+ }
+ default:
+ NS_WARNING("Unexpected end of object");
+ mState = State::Error;
+ return false;
+ }
+
+ return true;
+}
+
+bool ContentPrincipalJSONHandler::stringValue(const JS::Latin1Char* str,
+ size_t length) {
+ switch (mState) {
+ case State::URIKey: {
+ nsDependentCSubstring spec(reinterpret_cast<const char*>(str), length);
+
+ nsresult rv = NS_NewURI(getter_AddRefs(mPrincipalURI), spec);
+ if (NS_FAILED(rv)) {
+ mState = State::Error;
+ return false;
+ }
+
+ {
+ // Enforce re-parsing about: URIs so that if they change, we
+ // continue to use their new principals correctly.
+ if (mPrincipalURI->SchemeIs("about")) {
+ nsAutoCString spec;
+ mPrincipalURI->GetSpec(spec);
+ rv = NS_NewURI(getter_AddRefs(mPrincipalURI), spec);
+ if (NS_FAILED(rv)) {
+ mState = State::Error;
+ return false;
+ }
+ }
+ }
+
+ mState = State::AfterPropertyValue;
+ break;
+ }
+ case State::DomainKey: {
+ nsDependentCSubstring spec(reinterpret_cast<const char*>(str), length);
+
+ nsresult rv = NS_NewURI(getter_AddRefs(mDomain), spec);
+ if (NS_FAILED(rv)) {
+ mState = State::Error;
+ return false;
+ }
+
+ mState = State::AfterPropertyValue;
+ break;
+ }
+ case State::SuffixKey: {
+ nsDependentCSubstring attrs(reinterpret_cast<const char*>(str), length);
+ if (!mAttrs.PopulateFromSuffix(attrs)) {
+ mState = State::Error;
+ return false;
+ }
+
+ mState = State::AfterPropertyValue;
+ break;
+ }
+ default:
+ NS_WARNING("Unexpected string value");
+ mState = State::Error;
+ return false;
+ }
+
+ return true;
+}