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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/renderer/manifest/manifest_manager.h"
#include "base/bind.h"
#include "base/strings/nullable_string16.h"
#include "content/common/manifest_manager_messages.h"
#include "content/public/renderer/render_frame.h"
#include "content/renderer/fetchers/manifest_fetcher.h"
#include "content/renderer/manifest/manifest_parser.h"
#include "content/renderer/manifest/manifest_uma_util.h"
#include "third_party/WebKit/public/platform/WebURLResponse.h"
#include "third_party/WebKit/public/web/WebConsoleMessage.h"
#include "third_party/WebKit/public/web/WebDocument.h"
#include "third_party/WebKit/public/web/WebLocalFrame.h"
namespace content {
ManifestManager::ManifestManager(RenderFrame* render_frame)
: RenderFrameObserver(render_frame),
may_have_manifest_(false),
manifest_dirty_(true) {
}
ManifestManager::~ManifestManager() {
if (fetcher_)
fetcher_->Cancel();
// Consumers in the browser process will not receive this message but they
// will be aware of the RenderFrame dying and should act on that. Consumers
// in the renderer process should be correctly notified.
ResolveCallbacks(ResolveStateFailure);
}
bool ManifestManager::OnMessageReceived(const IPC::Message& message) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(ManifestManager, message)
IPC_MESSAGE_HANDLER(ManifestManagerMsg_RequestManifest, OnRequestManifest)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void ManifestManager::OnRequestManifest(int request_id) {
GetManifest(base::Bind(&ManifestManager::OnRequestManifestComplete,
base::Unretained(this), request_id));
}
void ManifestManager::OnRequestManifestComplete(
int request_id, const Manifest& manifest) {
// When sent via IPC, the Manifest must follow certain security rules.
Manifest ipc_manifest = manifest;
ipc_manifest.name = base::NullableString16(
ipc_manifest.name.string().substr(0, Manifest::kMaxIPCStringLength),
ipc_manifest.name.is_null());
ipc_manifest.short_name = base::NullableString16(
ipc_manifest.short_name.string().substr(0,
Manifest::kMaxIPCStringLength),
ipc_manifest.short_name.is_null());
for (size_t i = 0; i < ipc_manifest.icons.size(); ++i) {
ipc_manifest.icons[i].type = base::NullableString16(
ipc_manifest.icons[i].type.string().substr(
0, Manifest::kMaxIPCStringLength),
ipc_manifest.icons[i].type.is_null());
}
ipc_manifest.gcm_sender_id = base::NullableString16(
ipc_manifest.gcm_sender_id.string().substr(
0, Manifest::kMaxIPCStringLength),
ipc_manifest.gcm_sender_id.is_null());
Send(new ManifestManagerHostMsg_RequestManifestResponse(
routing_id(), request_id, ipc_manifest));
}
void ManifestManager::GetManifest(const GetManifestCallback& callback) {
if (!may_have_manifest_) {
callback.Run(Manifest());
return;
}
if (!manifest_dirty_) {
callback.Run(manifest_);
return;
}
pending_callbacks_.push_back(callback);
// Just wait for the running call to be done if there are other callbacks.
if (pending_callbacks_.size() > 1)
return;
FetchManifest();
}
void ManifestManager::DidChangeManifest() {
may_have_manifest_ = true;
manifest_dirty_ = true;
}
void ManifestManager::FetchManifest() {
GURL url(render_frame()->GetWebFrame()->document().manifestURL());
if (url.is_empty()) {
ManifestUmaUtil::FetchFailed(ManifestUmaUtil::FETCH_EMPTY_URL);
ResolveCallbacks(ResolveStateFailure);
return;
}
fetcher_.reset(new ManifestFetcher(url));
fetcher_->Start(render_frame()->GetWebFrame(),
base::Bind(&ManifestManager::OnManifestFetchComplete,
base::Unretained(this),
render_frame()->GetWebFrame()->document().url()));
}
void ManifestManager::OnManifestFetchComplete(
const GURL& document_url,
const blink::WebURLResponse& response,
const std::string& data) {
if (response.isNull() && data.empty()) {
ManifestUmaUtil::FetchFailed(ManifestUmaUtil::FETCH_UNSPECIFIED_REASON);
ResolveCallbacks(ResolveStateFailure);
return;
}
ManifestUmaUtil::FetchSucceeded();
ManifestParser parser(data, response.url(), document_url);
parser.Parse();
fetcher_.reset();
for (const std::string& msg : parser.errors()) {
blink::WebConsoleMessage message;
message.level = blink::WebConsoleMessage::LevelError;
message.text = blink::WebString::fromUTF8(msg);
render_frame()->GetWebFrame()->addMessageToConsole(message);
}
// Having errors while parsing the manifest doesn't mean the manifest parsing
// failed. Some properties might have been ignored but some others kept.
if (parser.failed()) {
ResolveCallbacks(ResolveStateFailure);
return;
}
manifest_ = parser.manifest();
ResolveCallbacks(ResolveStateSuccess);
}
void ManifestManager::ResolveCallbacks(ResolveState state) {
if (state == ResolveStateFailure)
manifest_ = Manifest();
manifest_dirty_ = state != ResolveStateSuccess;
Manifest manifest = manifest_;
std::list<GetManifestCallback> callbacks = pending_callbacks_;
pending_callbacks_.clear();
for (std::list<GetManifestCallback>::const_iterator it = callbacks.begin();
it != callbacks.end(); ++it) {
it->Run(manifest);
}
}
} // namespace content
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