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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
#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_IsAboutBlankAllowQueryAndFragment(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.
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;
}
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.
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);
// 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.
// Principals which allows us to update the code here.
// Additionally, the format for serialized CSPs changed
// 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
// | |
// | | | |
// ----------------------------- |
// | | |
// 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;
}