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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/browser/manifest/manifest_manager_host.h"
#include "base/stl_util.h"
#include "content/common/manifest_manager_messages.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/common/manifest.h"
#include "content/public/common/result_codes.h"
namespace content {
namespace {
void KillRenderer(RenderFrameHost* render_frame_host) {
base::ProcessHandle process_handle =
render_frame_host->GetProcess()->GetHandle();
if (process_handle == base::kNullProcessHandle)
return;
render_frame_host->GetProcess()->Shutdown(RESULT_CODE_KILLED_BAD_MESSAGE,
false);
}
} // anonymous namespace
ManifestManagerHost::ManifestManagerHost(WebContents* web_contents)
: WebContentsObserver(web_contents) {
}
ManifestManagerHost::~ManifestManagerHost() {
STLDeleteValues(&pending_callbacks_);
}
ManifestManagerHost::CallbackMap* ManifestManagerHost::GetCallbackMapForFrame(
RenderFrameHost* render_frame_host) {
FrameCallbackMap::iterator it = pending_callbacks_.find(render_frame_host);
return it != pending_callbacks_.end() ? it->second : 0;
}
void ManifestManagerHost::RenderFrameDeleted(
RenderFrameHost* render_frame_host) {
CallbackMap* callbacks = GetCallbackMapForFrame(render_frame_host);
if (!callbacks)
return;
// Before deleting the callbacks, make sure they are called with a failure
// state. Do this in a block so the iterator is destroyed before |callbacks|.
{
CallbackMap::const_iterator it(callbacks);
for (; !it.IsAtEnd(); it.Advance())
it.GetCurrentValue()->Run(Manifest());
}
delete callbacks;
pending_callbacks_.erase(render_frame_host);
}
void ManifestManagerHost::GetManifest(RenderFrameHost* render_frame_host,
const GetManifestCallback& callback) {
CallbackMap* callbacks = GetCallbackMapForFrame(render_frame_host);
if (!callbacks) {
callbacks = new CallbackMap();
pending_callbacks_[render_frame_host] = callbacks;
}
int request_id = callbacks->Add(new GetManifestCallback(callback));
render_frame_host->Send(new ManifestManagerMsg_RequestManifest(
render_frame_host->GetRoutingID(), request_id));
}
bool ManifestManagerHost::OnMessageReceived(
const IPC::Message& message, RenderFrameHost* render_frame_host) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP_WITH_PARAM(ManifestManagerHost, message,
render_frame_host)
IPC_MESSAGE_HANDLER(ManifestManagerHostMsg_RequestManifestResponse,
OnRequestManifestResponse)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void ManifestManagerHost::OnRequestManifestResponse(
RenderFrameHost* render_frame_host,
int request_id,
const Manifest& insecure_manifest) {
CallbackMap* callbacks = GetCallbackMapForFrame(render_frame_host);
if (!callbacks) {
DVLOG(1) << "Unexpected RequestManifestResponse to from renderer. "
"Killing renderer.";
KillRenderer(render_frame_host);
return;
}
GetManifestCallback* callback = callbacks->Lookup(request_id);
if (!callback) {
DVLOG(1) << "Received a request_id (" << request_id << ") from renderer "
"with no associated callback. Killing renderer.";
KillRenderer(render_frame_host);
return;
}
// When receiving a Manifest, the browser process can't trust that it is
// coming from a known and secure source. It must be processed accordingly.
Manifest manifest = insecure_manifest;
manifest.name = base::NullableString16(
manifest.name.string().substr(0, Manifest::kMaxIPCStringLength),
manifest.name.is_null());
manifest.short_name = base::NullableString16(
manifest.short_name.string().substr(0, Manifest::kMaxIPCStringLength),
manifest.short_name.is_null());
if (!manifest.start_url.is_valid())
manifest.start_url = GURL();
for (auto& icon : manifest.icons) {
if (!icon.src.is_valid())
icon.src = GURL();
icon.type = base::NullableString16(
icon.type.string().substr(0, Manifest::kMaxIPCStringLength),
icon.type.is_null());
}
manifest.gcm_sender_id = base::NullableString16(
manifest.gcm_sender_id.string().substr(
0, Manifest::kMaxIPCStringLength),
manifest.gcm_sender_id.is_null());
for (auto& related_application : manifest.related_applications) {
if (!related_application.url.is_valid())
related_application.url = GURL();
related_application.id =
base::NullableString16(related_application.id.string().substr(
0, Manifest::kMaxIPCStringLength),
related_application.id.is_null());
}
// theme_color is a 32 bit unsigned integer with a 64 bit integer simply
// being used to encode an error occuring. Therefore, any value outside the
// range of an unsigned 32 bit integer is invalid.
if (manifest.theme_color < 0 || manifest.theme_color > 0xFFFFFFFF)
manifest.theme_color = Manifest::kInvalidOrMissingThemeColor;
callback->Run(manifest);
callbacks->Remove(request_id);
if (callbacks->IsEmpty()) {
delete callbacks;
pending_callbacks_.erase(render_frame_host);
}
}
} // namespace content
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