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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* 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 "DomainPolicy.h"
#include "mozilla/dom/ContentParent.h"
#include "mozilla/ipc/URIUtils.h"
#include "mozilla/Unused.h"
#include "nsIMessageManager.h"
#include "nsScriptSecurityManager.h"
namespace mozilla {
using namespace ipc;
using namespace dom;
NS_IMPL_ISUPPORTS(DomainPolicy, nsIDomainPolicy)
static nsresult
BroadcastDomainSetChange(DomainSetType aSetType, DomainSetChangeType aChangeType,
nsIURI* aDomain = nullptr)
{
MOZ_ASSERT(XRE_IsParentProcess(),
"DomainPolicy should only be exposed to the chrome process.");
nsTArray<ContentParent*> parents;
ContentParent::GetAll(parents);
if (!parents.Length()) {
return NS_OK;
}
OptionalURIParams uri;
SerializeURI(aDomain, uri);
for (uint32_t i = 0; i < parents.Length(); i++) {
Unused << parents[i]->SendDomainSetChanged(aSetType, aChangeType, uri);
}
return NS_OK;
}
DomainPolicy::DomainPolicy() : mBlacklist(new DomainSet(BLACKLIST))
, mSuperBlacklist(new DomainSet(SUPER_BLACKLIST))
, mWhitelist(new DomainSet(WHITELIST))
, mSuperWhitelist(new DomainSet(SUPER_WHITELIST))
{
if (XRE_IsParentProcess()) {
BroadcastDomainSetChange(NO_TYPE, ACTIVATE_POLICY);
}
}
DomainPolicy::~DomainPolicy()
{
// The SSM holds a strong ref to the DomainPolicy until Deactivate() is
// invoked, so we should never hit the destructor until that happens.
MOZ_ASSERT(!mBlacklist && !mSuperBlacklist &&
!mWhitelist && !mSuperWhitelist);
}
NS_IMETHODIMP
DomainPolicy::GetBlacklist(nsIDomainSet** aSet)
{
nsCOMPtr<nsIDomainSet> set = mBlacklist.get();
set.forget(aSet);
return NS_OK;
}
NS_IMETHODIMP
DomainPolicy::GetSuperBlacklist(nsIDomainSet** aSet)
{
nsCOMPtr<nsIDomainSet> set = mSuperBlacklist.get();
set.forget(aSet);
return NS_OK;
}
NS_IMETHODIMP
DomainPolicy::GetWhitelist(nsIDomainSet** aSet)
{
nsCOMPtr<nsIDomainSet> set = mWhitelist.get();
set.forget(aSet);
return NS_OK;
}
NS_IMETHODIMP
DomainPolicy::GetSuperWhitelist(nsIDomainSet** aSet)
{
nsCOMPtr<nsIDomainSet> set = mSuperWhitelist.get();
set.forget(aSet);
return NS_OK;
}
NS_IMETHODIMP
DomainPolicy::Deactivate()
{
// Clear the hashtables first to free up memory, since script might
// hold the doomed sets alive indefinitely.
mBlacklist->Clear();
mSuperBlacklist->Clear();
mWhitelist->Clear();
mSuperWhitelist->Clear();
// Null them out.
mBlacklist = nullptr;
mSuperBlacklist = nullptr;
mWhitelist = nullptr;
mSuperWhitelist = nullptr;
// Inform the SSM.
nsScriptSecurityManager* ssm = nsScriptSecurityManager::GetScriptSecurityManager();
if (ssm) {
ssm->DeactivateDomainPolicy();
}
if (XRE_IsParentProcess()) {
BroadcastDomainSetChange(NO_TYPE, DEACTIVATE_POLICY);
}
return NS_OK;
}
void
DomainPolicy::CloneDomainPolicy(DomainPolicyClone* aClone)
{
aClone->active() = true;
mBlacklist->CloneSet(&aClone->blacklist());
mSuperBlacklist->CloneSet(&aClone->superBlacklist());
mWhitelist->CloneSet(&aClone->whitelist());
mSuperWhitelist->CloneSet(&aClone->superWhitelist());
}
static
void
CopyURIs(const InfallibleTArray<URIParams>& aDomains, nsIDomainSet* aSet)
{
for (uint32_t i = 0; i < aDomains.Length(); i++) {
nsCOMPtr<nsIURI> uri = DeserializeURI(aDomains[i]);
aSet->Add(uri);
}
}
void
DomainPolicy::ApplyClone(DomainPolicyClone* aClone)
{
CopyURIs(aClone->blacklist(), mBlacklist);
CopyURIs(aClone->whitelist(), mWhitelist);
CopyURIs(aClone->superBlacklist(), mSuperBlacklist);
CopyURIs(aClone->superWhitelist(), mSuperWhitelist);
}
static already_AddRefed<nsIURI>
GetCanonicalClone(nsIURI* aURI)
{
nsCOMPtr<nsIURI> clone;
nsresult rv = aURI->Clone(getter_AddRefs(clone));
NS_ENSURE_SUCCESS(rv, nullptr);
rv = clone->SetUserPass(EmptyCString());
NS_ENSURE_SUCCESS(rv, nullptr);
rv = clone->SetPath(EmptyCString());
NS_ENSURE_SUCCESS(rv, nullptr);
return clone.forget();
}
NS_IMPL_ISUPPORTS(DomainSet, nsIDomainSet)
NS_IMETHODIMP
DomainSet::Add(nsIURI* aDomain)
{
nsCOMPtr<nsIURI> clone = GetCanonicalClone(aDomain);
NS_ENSURE_TRUE(clone, NS_ERROR_FAILURE);
mHashTable.PutEntry(clone);
if (XRE_IsParentProcess())
return BroadcastDomainSetChange(mType, ADD_DOMAIN, aDomain);
return NS_OK;
}
NS_IMETHODIMP
DomainSet::Remove(nsIURI* aDomain)
{
nsCOMPtr<nsIURI> clone = GetCanonicalClone(aDomain);
NS_ENSURE_TRUE(clone, NS_ERROR_FAILURE);
mHashTable.RemoveEntry(clone);
if (XRE_IsParentProcess())
return BroadcastDomainSetChange(mType, REMOVE_DOMAIN, aDomain);
return NS_OK;
}
NS_IMETHODIMP
DomainSet::Clear()
{
mHashTable.Clear();
if (XRE_IsParentProcess())
return BroadcastDomainSetChange(mType, CLEAR_DOMAINS);
return NS_OK;
}
NS_IMETHODIMP
DomainSet::Contains(nsIURI* aDomain, bool* aContains)
{
*aContains = false;
nsCOMPtr<nsIURI> clone = GetCanonicalClone(aDomain);
NS_ENSURE_TRUE(clone, NS_ERROR_FAILURE);
*aContains = mHashTable.Contains(clone);
return NS_OK;
}
NS_IMETHODIMP
DomainSet::ContainsSuperDomain(nsIURI* aDomain, bool* aContains)
{
*aContains = false;
nsCOMPtr<nsIURI> clone = GetCanonicalClone(aDomain);
NS_ENSURE_TRUE(clone, NS_ERROR_FAILURE);
nsAutoCString domain;
nsresult rv = clone->GetHost(domain);
NS_ENSURE_SUCCESS(rv, rv);
while (true) {
// Check the current domain.
if (mHashTable.Contains(clone)) {
*aContains = true;
return NS_OK;
}
// Chop off everything before the first dot, or break if there are no
// dots left.
int32_t index = domain.Find(".");
if (index == kNotFound)
break;
domain.Assign(Substring(domain, index + 1));
rv = clone->SetHost(domain);
NS_ENSURE_SUCCESS(rv, rv);
}
// No match.
return NS_OK;
}
NS_IMETHODIMP
DomainSet::GetType(uint32_t* aType)
{
*aType = mType;
return NS_OK;
}
void
DomainSet::CloneSet(InfallibleTArray<URIParams>* aDomains)
{
for (auto iter = mHashTable.Iter(); !iter.Done(); iter.Next()) {
nsIURI* key = iter.Get()->GetKey();
URIParams uri;
SerializeURI(key, uri);
aDomains->AppendElement(uri);
}
}
} /* namespace mozilla */
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