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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 "PartitioningExceptionList.h"
#include "AntiTrackingLog.h"
#include "nsContentUtils.h"
#include "mozilla/ClearOnShutdown.h"
#include "mozilla/StaticPtr.h"
namespace mozilla {
namespace {
inline nsresult CreateExceptionListKey(const nsACString& aFirstPartyOrigin,
const nsACString& aThirdPartyOrigin,
nsACString& aExceptionListKey) {
MOZ_ASSERT(!aFirstPartyOrigin.IsEmpty());
MOZ_ASSERT(!aThirdPartyOrigin.IsEmpty());
// Don't allow exceptions for everything
if (aFirstPartyOrigin.EqualsLiteral("*") &&
aThirdPartyOrigin.EqualsLiteral("*")) {
return NS_ERROR_ILLEGAL_VALUE;
}
aExceptionListKey.Assign(aFirstPartyOrigin);
aExceptionListKey.Append(",");
aExceptionListKey.Append(aThirdPartyOrigin);
return NS_OK;
}
inline nsresult CreateUnifiedOriginString(const nsACString& aInput,
nsACString& aOutput) {
nsCOMPtr<nsIURI> uri;
if (aInput.EqualsLiteral("*")) {
aOutput.AssignLiteral("*");
return NS_OK;
}
nsresult rv = NS_NewURI(getter_AddRefs(uri), aInput);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
return nsContentUtils::GetASCIIOrigin(uri, aOutput);
}
StaticRefPtr<PartitioningExceptionList> gPartitioningExceptionList;
} // namespace
NS_IMPL_ISUPPORTS(PartitioningExceptionList,
nsIPartitioningExceptionListObserver)
bool PartitioningExceptionList::Check(const nsACString& aFirstPartyOrigin,
const nsACString& aThirdPartyOrigin) {
if (aFirstPartyOrigin.IsEmpty() || aThirdPartyOrigin.IsEmpty()) {
return false;
}
LOG(("Check partitioning exception list for url %s and %s",
PromiseFlatCString(aFirstPartyOrigin).get(),
PromiseFlatCString(aThirdPartyOrigin).get()));
nsAutoCString key, wildcardFirstPartyKey, wildcardThirdPartyKey;
CreateExceptionListKey(aFirstPartyOrigin, aThirdPartyOrigin, key);
CreateExceptionListKey("*"_ns, aThirdPartyOrigin, wildcardFirstPartyKey);
CreateExceptionListKey(aFirstPartyOrigin, "*"_ns, wildcardThirdPartyKey);
if (GetOrCreate()->mExceptionList.Contains(key) ||
GetOrCreate()->mExceptionList.Contains(wildcardFirstPartyKey) ||
GetOrCreate()->mExceptionList.Contains(wildcardThirdPartyKey)) {
LOG(("URI is in exception list"));
return true;
}
return false;
}
PartitioningExceptionList* PartitioningExceptionList::GetOrCreate() {
if (!gPartitioningExceptionList) {
gPartitioningExceptionList = new PartitioningExceptionList();
gPartitioningExceptionList->Init();
RunOnShutdown([&] {
gPartitioningExceptionList->Shutdown();
gPartitioningExceptionList = nullptr;
});
}
return gPartitioningExceptionList;
}
nsresult PartitioningExceptionList::Init() {
mService =
do_GetService("@mozilla.org/partitioning/exception-list-service;1");
if (NS_WARN_IF(!mService)) {
return NS_ERROR_FAILURE;
}
mService->RegisterAndRunExceptionListObserver(this);
return NS_OK;
}
void PartitioningExceptionList::Shutdown() {
if (mService) {
mService->UnregisterExceptionListObserver(this);
mService = nullptr;
}
mExceptionList.Clear();
}
NS_IMETHODIMP
PartitioningExceptionList::OnExceptionListUpdate(const nsACString& aList) {
mExceptionList.Clear();
nsresult rv;
for (const nsACString& item : aList.Split(';')) {
auto origins = item.Split(',');
auto originsIt = origins.begin();
if (originsIt == origins.end()) {
LOG(("Ignoring empty exception entry"));
continue;
}
nsAutoCString firstPartyOrigin;
rv = CreateUnifiedOriginString(*originsIt, firstPartyOrigin);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
++originsIt;
if (originsIt == origins.end()) {
LOG(("Ignoring incomplete exception entry"));
continue;
}
nsAutoCString thirdPartyOrigin;
rv = CreateUnifiedOriginString(*originsIt, thirdPartyOrigin);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
nsAutoCString key;
rv = CreateExceptionListKey(firstPartyOrigin, thirdPartyOrigin, key);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
LOG(("onExceptionListUpdate: %s", key.get()));
mExceptionList.AppendElement(key);
}
return NS_OK;
}
} // namespace mozilla
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