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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 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 "PolicyContainer.h"
#include "mozilla/dom/IntegrityPolicy.h"
#include "mozilla/dom/nsCSPContext.h"
#include "mozilla/ipc/PBackgroundSharedTypes.h"
#include "nsIClassInfoImpl.h"
#include "nsIObjectInputStream.h"
#include "nsIObjectOutputStream.h"
using namespace mozilla;
using namespace mozilla::dom;
PolicyContainer::~PolicyContainer() = default;
constexpr static uint32_t kPolicyContainerSerializationVersion = 1;
NS_IMETHODIMP
PolicyContainer::Read(nsIObjectInputStream* aStream) {
// Currently, we don't care about the version, but we might in the future.
uint32_t version = 0;
nsresult rv = aStream->Read32(&version);
NS_ENSURE_SUCCESS(rv, rv);
if (version != kPolicyContainerSerializationVersion) {
return NS_ERROR_FAILURE;
}
auto ReadOptionalCSPObject = [aStream](nsISupports** aOutCSP) {
bool nonnull = false;
nsresult rv = aStream->ReadBoolean(&nonnull);
NS_ENSURE_SUCCESS(rv, rv);
if (nonnull) {
nsCID cid;
rv = aStream->ReadID(&cid);
NS_ENSURE_SUCCESS(rv, rv);
MOZ_ASSERT(cid.Equals(nsCSPContext::GetCID()),
"Expected nsCSPContext CID");
nsIID iid;
rv = aStream->ReadID(&iid);
NS_ENSURE_SUCCESS(rv, rv);
MOZ_ASSERT(iid.Equals(NS_GET_IID(nsIContentSecurityPolicy)),
"Expected nsIContentSecurityPolicy IID");
RefPtr<nsCSPContext> csp = new nsCSPContext();
rv = csp->PolicyContainerRead(aStream);
NS_ENSURE_SUCCESS(rv, rv);
csp.forget(aOutCSP);
}
return NS_OK;
};
nsCOMPtr<nsISupports> csp;
rv = ReadOptionalCSPObject(getter_AddRefs(csp));
NS_ENSURE_SUCCESS(rv, rv);
mCSP = do_QueryInterface(csp);
nsCOMPtr<nsISupports> integrityPolicy;
rv = NS_ReadOptionalObject(aStream, true, getter_AddRefs(integrityPolicy));
NS_ENSURE_SUCCESS(rv, rv);
mIntegrityPolicy = do_QueryInterface(integrityPolicy);
return NS_OK;
}
NS_IMETHODIMP
PolicyContainer::Write(nsIObjectOutputStream* aStream) {
aStream->Write32(kPolicyContainerSerializationVersion);
nsresult rv = NS_WriteOptionalCompoundObject(
aStream, mCSP, NS_GET_IID(nsIContentSecurityPolicy), true);
NS_ENSURE_SUCCESS(rv, rv);
rv = NS_WriteOptionalCompoundObject(aStream, mIntegrityPolicy,
NS_GET_IID(nsIIntegrityPolicy), true);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
void PolicyContainer::ToArgs(const PolicyContainer* aPolicy,
mozilla::ipc::PolicyContainerArgs& aArgs) {
if (!aPolicy) {
return;
}
if (aPolicy->mCSP) {
mozilla::ipc::CSPInfo cspInfo;
mozilla::ipc::CSPToCSPInfo(aPolicy->mCSP, &cspInfo);
aArgs.csp() = Some(cspInfo);
}
if (aPolicy->mIntegrityPolicy) {
mozilla::ipc::IntegrityPolicyArgs integrityPolicyArgs;
IntegrityPolicy::ToArgs(IntegrityPolicy::Cast(aPolicy->mIntegrityPolicy),
integrityPolicyArgs);
aArgs.integrityPolicy() = Some(integrityPolicyArgs);
}
}
void PolicyContainer::FromArgs(const mozilla::ipc::PolicyContainerArgs& aArgs,
mozilla::dom::Document* aRequestingDocument,
PolicyContainer** aPolicy) {
RefPtr<PolicyContainer> policy = new PolicyContainer();
if (aArgs.csp().isSome()) {
nsCOMPtr<nsIContentSecurityPolicy> csp =
mozilla::ipc::CSPInfoToCSP(*aArgs.csp(), aRequestingDocument);
policy->SetCSP(nsCSPContext::Cast(csp));
}
if (aArgs.integrityPolicy().isSome()) {
RefPtr<dom::IntegrityPolicy> integrityPolicy = new dom::IntegrityPolicy();
IntegrityPolicy::FromArgs(*aArgs.integrityPolicy(),
getter_AddRefs(integrityPolicy));
policy->SetIntegrityPolicy(integrityPolicy);
}
policy.forget(aPolicy);
}
void PolicyContainer::InitFromOther(PolicyContainer* aOther) {
if (!aOther) {
return;
}
if (aOther->mCSP) {
RefPtr<nsCSPContext> csp = new nsCSPContext();
csp = new nsCSPContext();
csp->InitFromOther(nsCSPContext::Cast(aOther->mCSP));
mCSP = csp;
}
if (aOther->mIntegrityPolicy) {
RefPtr<dom::IntegrityPolicy> integrityPolicy = new dom::IntegrityPolicy();
integrityPolicy->InitFromOther(
IntegrityPolicy::Cast(aOther->mIntegrityPolicy));
mIntegrityPolicy = integrityPolicy;
}
}
NS_IMETHODIMP PolicyContainer::InitFromCSP(nsIContentSecurityPolicy* aCSP) {
SetCSP(aCSP);
return NS_OK;
}
bool PolicyContainer::Equals(const PolicyContainer* aContainer,
const PolicyContainer* aOtherContainer) {
// Do a quick pointer check first, also checks if both are null.
if (aContainer == aOtherContainer) {
return true;
}
// We checked if they were null above, so make sure one of them is not null.
if (!aContainer || !aOtherContainer) {
return false;
}
if (!nsCSPContext::Equals(aContainer->mCSP, aOtherContainer->mCSP)) {
return false;
}
if (!IntegrityPolicy::Equals(
IntegrityPolicy::Cast(aContainer->mIntegrityPolicy),
IntegrityPolicy::Cast(aOtherContainer->mIntegrityPolicy))) {
return false;
}
return true;
}
// == CSP ==
void PolicyContainer::SetCSP(nsIContentSecurityPolicy* aPolicy) {
mCSP = aPolicy;
}
nsIContentSecurityPolicy* PolicyContainer::GetCSP() const { return mCSP; }
nsIContentSecurityPolicy* PolicyContainer::GetCSP(
const nsIPolicyContainer* aPolicyContainer) {
if (!aPolicyContainer) {
return nullptr;
}
return PolicyContainer::Cast(aPolicyContainer)->GetCSP();
}
// == Integrity Policy ==
void PolicyContainer::SetIntegrityPolicy(nsIIntegrityPolicy* aPolicy) {
mIntegrityPolicy = aPolicy;
}
nsIIntegrityPolicy* PolicyContainer::GetIntegrityPolicy() const {
return mIntegrityPolicy;
}
nsIIntegrityPolicy* PolicyContainer::GetIntegrityPolicy(
const nsIPolicyContainer* aPolicyContainer) {
if (!aPolicyContainer) {
return nullptr;
}
return PolicyContainer::Cast(aPolicyContainer)->GetIntegrityPolicy();
}
NS_IMETHODIMP PolicyContainer::GetCsp(nsIContentSecurityPolicy** aCsp) {
nsCOMPtr<nsIContentSecurityPolicy> csp = mCSP;
csp.forget(aCsp);
return NS_OK;
}
NS_IMPL_CLASSINFO(PolicyContainer, nullptr, 0, NS_IPOLICYCONTAINER_IID)
NS_IMPL_ISUPPORTS_CI(PolicyContainer, nsIPolicyContainer, nsISerializable)
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