mirror of
https://github.com/classilla/tenfourfox.git
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630 lines
19 KiB
C++
630 lines
19 KiB
C++
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/dom/cache/AutoUtils.h"
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#include "mozilla/unused.h"
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#include "mozilla/dom/InternalHeaders.h"
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#include "mozilla/dom/InternalRequest.h"
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#include "mozilla/dom/cache/CacheParent.h"
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#include "mozilla/dom/cache/CachePushStreamChild.h"
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#include "mozilla/dom/cache/CacheStreamControlParent.h"
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#include "mozilla/dom/cache/ReadStream.h"
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#include "mozilla/dom/cache/SavedTypes.h"
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#include "mozilla/dom/cache/StreamList.h"
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#include "mozilla/dom/cache/TypeUtils.h"
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#include "mozilla/ipc/FileDescriptorSetChild.h"
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#include "mozilla/ipc/FileDescriptorSetParent.h"
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#include "mozilla/ipc/PBackgroundParent.h"
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#include "nsCRT.h"
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#include "nsHttp.h"
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namespace {
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using mozilla::Unused;
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using mozilla::dom::cache::CachePushStreamChild;
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using mozilla::dom::cache::CacheReadStream;
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using mozilla::dom::cache::CacheReadStreamOrVoid;
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using mozilla::ipc::FileDescriptor;
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using mozilla::ipc::FileDescriptorSetChild;
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using mozilla::ipc::FileDescriptorSetParent;
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using mozilla::ipc::OptionalFileDescriptorSet;
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enum CleanupAction
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{
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Forget,
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Delete
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};
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void
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CleanupChildFds(CacheReadStream& aReadStream, CleanupAction aAction)
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{
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if (aReadStream.fds().type() !=
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OptionalFileDescriptorSet::TPFileDescriptorSetChild) {
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return;
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}
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nsAutoTArray<FileDescriptor, 4> fds;
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FileDescriptorSetChild* fdSetActor =
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static_cast<FileDescriptorSetChild*>(aReadStream.fds().get_PFileDescriptorSetChild());
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MOZ_ASSERT(fdSetActor);
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if (aAction == Delete) {
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Unused << fdSetActor->Send__delete__(fdSetActor);
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}
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// FileDescriptorSet doesn't clear its fds in its ActorDestroy, so we
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// unconditionally forget them here. The fds themselves are auto-closed in
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// ~FileDescriptor since they originated in this process.
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fdSetActor->ForgetFileDescriptors(fds);
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}
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void
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CleanupChildPushStream(CacheReadStream& aReadStream, CleanupAction aAction)
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{
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if (!aReadStream.pushStreamChild()) {
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return;
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}
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auto pushStream =
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static_cast<CachePushStreamChild*>(aReadStream.pushStreamChild());
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if (aAction == Delete) {
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pushStream->StartDestroy();
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return;
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}
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// If we send the stream, then we need to start it before forgetting about it.
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pushStream->Start();
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}
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void
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CleanupChild(CacheReadStream& aReadStream, CleanupAction aAction)
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{
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CleanupChildFds(aReadStream, aAction);
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CleanupChildPushStream(aReadStream, aAction);
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}
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void
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CleanupChild(CacheReadStreamOrVoid& aReadStreamOrVoid, CleanupAction aAction)
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{
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if (aReadStreamOrVoid.type() == CacheReadStreamOrVoid::Tvoid_t) {
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return;
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}
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CleanupChild(aReadStreamOrVoid.get_CacheReadStream(), aAction);
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}
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void
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CleanupParentFds(CacheReadStream& aReadStream, CleanupAction aAction)
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{
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if (aReadStream.fds().type() !=
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OptionalFileDescriptorSet::TPFileDescriptorSetParent) {
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return;
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}
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nsAutoTArray<FileDescriptor, 4> fds;
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FileDescriptorSetParent* fdSetActor =
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static_cast<FileDescriptorSetParent*>(aReadStream.fds().get_PFileDescriptorSetParent());
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MOZ_ASSERT(fdSetActor);
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if (aAction == Delete) {
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Unused << fdSetActor->Send__delete__(fdSetActor);
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}
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// FileDescriptorSet doesn't clear its fds in its ActorDestroy, so we
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// unconditionally forget them here. The fds themselves are auto-closed in
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// ~FileDescriptor since they originated in this process.
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fdSetActor->ForgetFileDescriptors(fds);
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}
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void
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CleanupParentFds(CacheReadStreamOrVoid& aReadStreamOrVoid, CleanupAction aAction)
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{
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if (aReadStreamOrVoid.type() == CacheReadStreamOrVoid::Tvoid_t) {
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return;
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}
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CleanupParentFds(aReadStreamOrVoid.get_CacheReadStream(), aAction);
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}
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} // namespace
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namespace mozilla {
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namespace dom {
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namespace cache {
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using mozilla::ipc::PBackgroundParent;
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// --------------------------------------------
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AutoChildOpArgs::AutoChildOpArgs(TypeUtils* aTypeUtils,
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const CacheOpArgs& aOpArgs)
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: mTypeUtils(aTypeUtils)
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, mOpArgs(aOpArgs)
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, mSent(false)
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{
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MOZ_ASSERT(mTypeUtils);
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}
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AutoChildOpArgs::~AutoChildOpArgs()
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{
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CleanupAction action = mSent ? Forget : Delete;
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switch(mOpArgs.type()) {
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case CacheOpArgs::TCacheMatchArgs:
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{
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CacheMatchArgs& args = mOpArgs.get_CacheMatchArgs();
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CleanupChild(args.request().body(), action);
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break;
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}
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case CacheOpArgs::TCacheMatchAllArgs:
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{
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CacheMatchAllArgs& args = mOpArgs.get_CacheMatchAllArgs();
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if (args.requestOrVoid().type() == CacheRequestOrVoid::Tvoid_t) {
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break;
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}
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CleanupChild(args.requestOrVoid().get_CacheRequest().body(), action);
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break;
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}
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case CacheOpArgs::TCachePutAllArgs:
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{
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CachePutAllArgs& args = mOpArgs.get_CachePutAllArgs();
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auto& list = args.requestResponseList();
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for (uint32_t i = 0; i < list.Length(); ++i) {
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CleanupChild(list[i].request().body(), action);
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CleanupChild(list[i].response().body(), action);
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}
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break;
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}
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case CacheOpArgs::TCacheDeleteArgs:
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{
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CacheDeleteArgs& args = mOpArgs.get_CacheDeleteArgs();
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CleanupChild(args.request().body(), action);
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break;
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}
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case CacheOpArgs::TCacheKeysArgs:
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{
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CacheKeysArgs& args = mOpArgs.get_CacheKeysArgs();
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if (args.requestOrVoid().type() == CacheRequestOrVoid::Tvoid_t) {
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break;
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}
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CleanupChild(args.requestOrVoid().get_CacheRequest().body(), action);
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break;
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}
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case CacheOpArgs::TStorageMatchArgs:
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{
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StorageMatchArgs& args = mOpArgs.get_StorageMatchArgs();
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CleanupChild(args.request().body(), action);
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break;
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}
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default:
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// Other types do not need cleanup
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break;
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}
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}
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void
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AutoChildOpArgs::Add(InternalRequest* aRequest, BodyAction aBodyAction,
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SchemeAction aSchemeAction, ErrorResult& aRv)
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{
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MOZ_ASSERT(!mSent);
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switch(mOpArgs.type()) {
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case CacheOpArgs::TCacheMatchArgs:
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{
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CacheMatchArgs& args = mOpArgs.get_CacheMatchArgs();
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mTypeUtils->ToCacheRequest(args.request(), aRequest, aBodyAction,
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aSchemeAction, aRv);
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break;
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}
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case CacheOpArgs::TCacheMatchAllArgs:
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{
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CacheMatchAllArgs& args = mOpArgs.get_CacheMatchAllArgs();
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MOZ_ASSERT(args.requestOrVoid().type() == CacheRequestOrVoid::Tvoid_t);
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args.requestOrVoid() = CacheRequest();
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mTypeUtils->ToCacheRequest(args.requestOrVoid().get_CacheRequest(),
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aRequest, aBodyAction, aSchemeAction, aRv);
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break;
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}
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case CacheOpArgs::TCacheDeleteArgs:
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{
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CacheDeleteArgs& args = mOpArgs.get_CacheDeleteArgs();
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mTypeUtils->ToCacheRequest(args.request(), aRequest, aBodyAction,
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aSchemeAction, aRv);
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break;
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}
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case CacheOpArgs::TCacheKeysArgs:
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{
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CacheKeysArgs& args = mOpArgs.get_CacheKeysArgs();
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MOZ_ASSERT(args.requestOrVoid().type() == CacheRequestOrVoid::Tvoid_t);
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args.requestOrVoid() = CacheRequest();
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mTypeUtils->ToCacheRequest(args.requestOrVoid().get_CacheRequest(),
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aRequest, aBodyAction, aSchemeAction, aRv);
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break;
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}
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case CacheOpArgs::TStorageMatchArgs:
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{
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StorageMatchArgs& args = mOpArgs.get_StorageMatchArgs();
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mTypeUtils->ToCacheRequest(args.request(), aRequest, aBodyAction,
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aSchemeAction, aRv);
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break;
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}
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default:
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MOZ_CRASH("Cache args type cannot send a Request!");
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}
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}
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namespace {
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bool
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MatchInPutList(InternalRequest* aRequest,
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const nsTArray<CacheRequestResponse>& aPutList)
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{
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MOZ_ASSERT(aRequest);
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// This method implements the SW spec QueryCache algorithm against an
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// in memory array of Request/Response objects. This essentially the
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// same algorithm that is implemented in DBSchema.cpp. Unfortunately
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// we cannot unify them because when operating against the real database
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// we don't want to load all request/response objects into memory.
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// Note, we can skip the check for a invalid request method because
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// Cache should only call into here with a GET or HEAD.
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#ifdef DEBUG
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nsAutoCString method;
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aRequest->GetMethod(method);
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MOZ_ASSERT(method.LowerCaseEqualsLiteral("get") ||
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method.LowerCaseEqualsLiteral("head"));
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#endif
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RefPtr<InternalHeaders> requestHeaders = aRequest->Headers();
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for (uint32_t i = 0; i < aPutList.Length(); ++i) {
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const CacheRequest& cachedRequest = aPutList[i].request();
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const CacheResponse& cachedResponse = aPutList[i].response();
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nsAutoCString url;
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aRequest->GetURL(url);
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nsAutoCString requestUrl(cachedRequest.urlWithoutQuery());
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requestUrl.Append(cachedRequest.urlQuery());
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// If the URLs don't match, then just skip to the next entry.
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if (url != requestUrl) {
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continue;
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}
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RefPtr<InternalHeaders> cachedRequestHeaders =
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TypeUtils::ToInternalHeaders(cachedRequest.headers());
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RefPtr<InternalHeaders> cachedResponseHeaders =
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TypeUtils::ToInternalHeaders(cachedResponse.headers());
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nsAutoTArray<nsCString, 16> varyHeaders;
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ErrorResult rv;
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cachedResponseHeaders->GetAll(NS_LITERAL_CSTRING("vary"), varyHeaders, rv);
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MOZ_ALWAYS_TRUE(!rv.Failed());
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// Assume the vary headers match until we find a conflict
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bool varyHeadersMatch = true;
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for (uint32_t j = 0; j < varyHeaders.Length(); ++j) {
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// Extract the header names inside the Vary header value.
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nsAutoCString varyValue(varyHeaders[j]);
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char* rawBuffer = varyValue.BeginWriting();
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char* token = nsCRT::strtok(rawBuffer, NS_HTTP_HEADER_SEPS, &rawBuffer);
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bool bailOut = false;
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for (; token;
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token = nsCRT::strtok(rawBuffer, NS_HTTP_HEADER_SEPS, &rawBuffer)) {
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nsDependentCString header(token);
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MOZ_ASSERT(!header.EqualsLiteral("*"),
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"We should have already caught this in "
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"TypeUtils::ToPCacheResponseWithoutBody()");
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ErrorResult headerRv;
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nsAutoCString value;
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requestHeaders->Get(header, value, headerRv);
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if (NS_WARN_IF(headerRv.Failed())) {
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headerRv.SuppressException();
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MOZ_ASSERT(value.IsEmpty());
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}
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nsAutoCString cachedValue;
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cachedRequestHeaders->Get(header, value, headerRv);
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if (NS_WARN_IF(headerRv.Failed())) {
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headerRv.SuppressException();
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MOZ_ASSERT(cachedValue.IsEmpty());
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}
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if (value != cachedValue) {
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varyHeadersMatch = false;
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bailOut = true;
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break;
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}
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}
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if (bailOut) {
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break;
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}
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}
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// URL was equal and all vary headers match!
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if (varyHeadersMatch) {
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return true;
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}
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}
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return false;
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}
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} // namespace
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void
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AutoChildOpArgs::Add(InternalRequest* aRequest, BodyAction aBodyAction,
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SchemeAction aSchemeAction, Response& aResponse,
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ErrorResult& aRv)
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{
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MOZ_ASSERT(!mSent);
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switch(mOpArgs.type()) {
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case CacheOpArgs::TCachePutAllArgs:
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{
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CachePutAllArgs& args = mOpArgs.get_CachePutAllArgs();
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// Throw an error if a request/response pair would mask another
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// request/response pair in the same PutAll operation. This is
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// step 2.3.2.3 from the "Batch Cache Operations" spec algorithm.
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if (MatchInPutList(aRequest, args.requestResponseList())) {
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aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
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return;
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}
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// The FileDescriptorSetChild asserts in its destructor that all fds have
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// been removed. The copy constructor, however, simply duplicates the
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// fds without removing any. This means each temporary and copy must be
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// explicitly cleaned up.
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//
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// Avoid a lot of this hassle by making sure we only create one here. On
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// error we remove it.
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CacheRequestResponse& pair = *args.requestResponseList().AppendElement();
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pair.request().body() = void_t();
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pair.response().body() = void_t();
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mTypeUtils->ToCacheRequest(pair.request(), aRequest, aBodyAction,
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aSchemeAction, aRv);
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if (!aRv.Failed()) {
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mTypeUtils->ToCacheResponse(pair.response(), aResponse, aRv);
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}
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if (aRv.Failed()) {
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CleanupChild(pair.request().body(), Delete);
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args.requestResponseList().RemoveElementAt(
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args.requestResponseList().Length() - 1);
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}
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break;
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}
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default:
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MOZ_CRASH("Cache args type cannot send a Request/Response pair!");
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}
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}
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const CacheOpArgs&
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AutoChildOpArgs::SendAsOpArgs()
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{
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MOZ_ASSERT(!mSent);
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mSent = true;
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return mOpArgs;
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}
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// --------------------------------------------
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AutoParentOpResult::AutoParentOpResult(mozilla::ipc::PBackgroundParent* aManager,
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const CacheOpResult& aOpResult)
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||
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: mManager(aManager)
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, mOpResult(aOpResult)
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, mStreamControl(nullptr)
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, mSent(false)
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{
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MOZ_ASSERT(mManager);
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}
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AutoParentOpResult::~AutoParentOpResult()
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{
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CleanupAction action = mSent ? Forget : Delete;
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switch (mOpResult.type()) {
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case CacheOpResult::TCacheMatchResult:
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{
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||
|
CacheMatchResult& result = mOpResult.get_CacheMatchResult();
|
||
|
if (result.responseOrVoid().type() == CacheResponseOrVoid::Tvoid_t) {
|
||
|
break;
|
||
|
}
|
||
|
CleanupParentFds(result.responseOrVoid().get_CacheResponse().body(),
|
||
|
action);
|
||
|
break;
|
||
|
}
|
||
|
case CacheOpResult::TCacheMatchAllResult:
|
||
|
{
|
||
|
CacheMatchAllResult& result = mOpResult.get_CacheMatchAllResult();
|
||
|
for (uint32_t i = 0; i < result.responseList().Length(); ++i) {
|
||
|
CleanupParentFds(result.responseList()[i].body(), action);
|
||
|
}
|
||
|
break;
|
||
|
}
|
||
|
case CacheOpResult::TCacheKeysResult:
|
||
|
{
|
||
|
CacheKeysResult& result = mOpResult.get_CacheKeysResult();
|
||
|
for (uint32_t i = 0; i < result.requestList().Length(); ++i) {
|
||
|
CleanupParentFds(result.requestList()[i].body(), action);
|
||
|
}
|
||
|
break;
|
||
|
}
|
||
|
case CacheOpResult::TStorageMatchResult:
|
||
|
{
|
||
|
StorageMatchResult& result = mOpResult.get_StorageMatchResult();
|
||
|
if (result.responseOrVoid().type() == CacheResponseOrVoid::Tvoid_t) {
|
||
|
break;
|
||
|
}
|
||
|
CleanupParentFds(result.responseOrVoid().get_CacheResponse().body(),
|
||
|
action);
|
||
|
break;
|
||
|
}
|
||
|
case CacheOpResult::TStorageOpenResult:
|
||
|
{
|
||
|
StorageOpenResult& result = mOpResult.get_StorageOpenResult();
|
||
|
if (action == Forget || result.actorParent() == nullptr) {
|
||
|
break;
|
||
|
}
|
||
|
Unused << PCacheParent::Send__delete__(result.actorParent());
|
||
|
}
|
||
|
default:
|
||
|
// other types do not need clean up
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
if (action == Delete && mStreamControl) {
|
||
|
Unused << PCacheStreamControlParent::Send__delete__(mStreamControl);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
void
|
||
|
AutoParentOpResult::Add(CacheId aOpenedCacheId, Manager* aManager)
|
||
|
{
|
||
|
MOZ_ASSERT(mOpResult.type() == CacheOpResult::TStorageOpenResult);
|
||
|
MOZ_ASSERT(mOpResult.get_StorageOpenResult().actorParent() == nullptr);
|
||
|
mOpResult.get_StorageOpenResult().actorParent() =
|
||
|
mManager->SendPCacheConstructor(new CacheParent(aManager, aOpenedCacheId));
|
||
|
}
|
||
|
|
||
|
void
|
||
|
AutoParentOpResult::Add(const SavedResponse& aSavedResponse,
|
||
|
StreamList* aStreamList)
|
||
|
{
|
||
|
MOZ_ASSERT(!mSent);
|
||
|
|
||
|
switch (mOpResult.type()) {
|
||
|
case CacheOpResult::TCacheMatchResult:
|
||
|
{
|
||
|
CacheMatchResult& result = mOpResult.get_CacheMatchResult();
|
||
|
MOZ_ASSERT(result.responseOrVoid().type() == CacheResponseOrVoid::Tvoid_t);
|
||
|
result.responseOrVoid() = aSavedResponse.mValue;
|
||
|
SerializeResponseBody(aSavedResponse, aStreamList,
|
||
|
&result.responseOrVoid().get_CacheResponse());
|
||
|
break;
|
||
|
}
|
||
|
case CacheOpResult::TCacheMatchAllResult:
|
||
|
{
|
||
|
CacheMatchAllResult& result = mOpResult.get_CacheMatchAllResult();
|
||
|
result.responseList().AppendElement(aSavedResponse.mValue);
|
||
|
SerializeResponseBody(aSavedResponse, aStreamList,
|
||
|
&result.responseList().LastElement());
|
||
|
break;
|
||
|
}
|
||
|
case CacheOpResult::TStorageMatchResult:
|
||
|
{
|
||
|
StorageMatchResult& result = mOpResult.get_StorageMatchResult();
|
||
|
MOZ_ASSERT(result.responseOrVoid().type() == CacheResponseOrVoid::Tvoid_t);
|
||
|
result.responseOrVoid() = aSavedResponse.mValue;
|
||
|
SerializeResponseBody(aSavedResponse, aStreamList,
|
||
|
&result.responseOrVoid().get_CacheResponse());
|
||
|
break;
|
||
|
}
|
||
|
default:
|
||
|
MOZ_CRASH("Cache result type cannot handle returning a Response!");
|
||
|
}
|
||
|
}
|
||
|
|
||
|
void
|
||
|
AutoParentOpResult::Add(const SavedRequest& aSavedRequest,
|
||
|
StreamList* aStreamList)
|
||
|
{
|
||
|
MOZ_ASSERT(!mSent);
|
||
|
|
||
|
switch (mOpResult.type()) {
|
||
|
case CacheOpResult::TCacheKeysResult:
|
||
|
{
|
||
|
CacheKeysResult& result = mOpResult.get_CacheKeysResult();
|
||
|
result.requestList().AppendElement(aSavedRequest.mValue);
|
||
|
CacheRequest& request = result.requestList().LastElement();
|
||
|
|
||
|
if (!aSavedRequest.mHasBodyId) {
|
||
|
request.body() = void_t();
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
request.body() = CacheReadStream();
|
||
|
SerializeReadStream(aSavedRequest.mBodyId, aStreamList,
|
||
|
&request.body().get_CacheReadStream());
|
||
|
break;
|
||
|
}
|
||
|
default:
|
||
|
MOZ_CRASH("Cache result type cannot handle returning a Request!");
|
||
|
}
|
||
|
}
|
||
|
|
||
|
const CacheOpResult&
|
||
|
AutoParentOpResult::SendAsOpResult()
|
||
|
{
|
||
|
MOZ_ASSERT(!mSent);
|
||
|
mSent = true;
|
||
|
return mOpResult;
|
||
|
}
|
||
|
|
||
|
void
|
||
|
AutoParentOpResult::SerializeResponseBody(const SavedResponse& aSavedResponse,
|
||
|
StreamList* aStreamList,
|
||
|
CacheResponse* aResponseOut)
|
||
|
{
|
||
|
MOZ_ASSERT(aResponseOut);
|
||
|
|
||
|
if (!aSavedResponse.mHasBodyId) {
|
||
|
aResponseOut->body() = void_t();
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
aResponseOut->body() = CacheReadStream();
|
||
|
SerializeReadStream(aSavedResponse.mBodyId, aStreamList,
|
||
|
&aResponseOut->body().get_CacheReadStream());
|
||
|
}
|
||
|
|
||
|
void
|
||
|
AutoParentOpResult::SerializeReadStream(const nsID& aId, StreamList* aStreamList,
|
||
|
CacheReadStream* aReadStreamOut)
|
||
|
{
|
||
|
MOZ_ASSERT(aStreamList);
|
||
|
MOZ_ASSERT(aReadStreamOut);
|
||
|
MOZ_ASSERT(!mSent);
|
||
|
|
||
|
nsCOMPtr<nsIInputStream> stream = aStreamList->Extract(aId);
|
||
|
MOZ_ASSERT(stream);
|
||
|
|
||
|
if (!mStreamControl) {
|
||
|
mStreamControl = static_cast<CacheStreamControlParent*>(
|
||
|
mManager->SendPCacheStreamControlConstructor(new CacheStreamControlParent()));
|
||
|
|
||
|
// If this failed, then the child process is gone. Warn and allow actor
|
||
|
// cleanup to proceed as normal.
|
||
|
if (!mStreamControl) {
|
||
|
NS_WARNING("Cache failed to create stream control actor.");
|
||
|
return;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
aStreamList->SetStreamControl(mStreamControl);
|
||
|
|
||
|
RefPtr<ReadStream> readStream = ReadStream::Create(mStreamControl,
|
||
|
aId, stream);
|
||
|
readStream->Serialize(aReadStreamOut);
|
||
|
}
|
||
|
|
||
|
} // namespace cache
|
||
|
} // namespace dom
|
||
|
} // namespace mozilla
|