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// Copyright (c) 2010 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 "chrome/browser/renderer_host/blob_dispatcher_host.h"
#include "chrome/browser/browser_thread.h"
#include "chrome/browser/child_process_security_policy.h"
#include "chrome/browser/chrome_blob_storage_context.h"
#include "chrome/common/render_messages.h"
#include "googleurl/src/gurl.h"
#include "ipc/ipc_message.h"
#include "webkit/blob/blob_data.h"
#include "webkit/blob/blob_storage_controller.h"
BlobDispatcherHost::BlobDispatcherHost(
int process_id,
ChromeBlobStorageContext* blob_storage_context)
: process_id_(process_id),
blob_storage_context_(blob_storage_context) {
}
BlobDispatcherHost::~BlobDispatcherHost() {
}
void BlobDispatcherHost::Shutdown() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
// Unregister all the blob URLs that are previously registered in this
// process.
for (base::hash_set<std::string>::const_iterator iter = blob_urls_.begin();
iter != blob_urls_.end(); ++iter) {
blob_storage_context_->controller()->UnregisterBlobUrl(GURL(*iter));
}
}
bool BlobDispatcherHost::OnMessageReceived(const IPC::Message& message,
bool* msg_is_ok) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
*msg_is_ok = true;
bool handled = true;
IPC_BEGIN_MESSAGE_MAP_EX(BlobDispatcherHost, message, *msg_is_ok)
IPC_MESSAGE_HANDLER(ViewHostMsg_RegisterBlobUrl, OnRegisterBlobUrl)
IPC_MESSAGE_HANDLER(ViewHostMsg_RegisterBlobUrlFrom, OnRegisterBlobUrlFrom)
IPC_MESSAGE_HANDLER(ViewHostMsg_UnregisterBlobUrl, OnUnregisterBlobUrl)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
// Check if the child process has been granted permission to register the files.
bool BlobDispatcherHost::CheckPermission(
webkit_blob::BlobData* blob_data) const {
ChildProcessSecurityPolicy* policy =
ChildProcessSecurityPolicy::GetInstance();
for (std::vector<webkit_blob::BlobData::Item>::const_iterator iter =
blob_data->items().begin();
iter != blob_data->items().end(); ++iter) {
if (iter->type() == webkit_blob::BlobData::TYPE_FILE) {
if (!policy->CanReadFile(process_id_, iter->file_path()))
return false;
}
}
return true;
}
void BlobDispatcherHost::OnRegisterBlobUrl(
const GURL& url, const scoped_refptr<webkit_blob::BlobData>& blob_data) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
if (!CheckPermission(blob_data.get()))
return;
blob_storage_context_->controller()->RegisterBlobUrl(url, blob_data);
blob_urls_.insert(url.spec());
}
void BlobDispatcherHost::OnRegisterBlobUrlFrom(
const GURL& url, const GURL& src_url) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
blob_storage_context_->controller()->RegisterBlobUrlFrom(url, src_url);
blob_urls_.insert(url.spec());
}
void BlobDispatcherHost::OnUnregisterBlobUrl(const GURL& url) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
blob_storage_context_->controller()->UnregisterBlobUrl(url);
blob_urls_.erase(url.spec());
}
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