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// Copyright (c) 2012 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/ui/webui/devtools_ui.h"
#include <string>
#include "base/memory/ref_counted_memory.h"
#include "base/memory/scoped_ptr.h"
#include "base/string_util.h"
#include "base/stringprintf.h"
#include "chrome/browser/net/chrome_url_request_context.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/common/url_constants.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/devtools_http_handler.h"
#include "content/public/browser/url_data_source.h"
#include "content/public/browser/web_contents.h"
#include "content/public/browser/web_ui.h"
#include "net/url_request/url_fetcher.h"
#include "net/url_request/url_fetcher_delegate.h"
#include "net/url_request/url_request_context_getter.h"
#include "ui/base/resource/resource_bundle.h"
using content::BrowserThread;
using content::WebContents;
namespace {
std::string PathWithoutParams(const std::string& path) {
return GURL(std::string("chrome-devtools://devtools/") + path)
.path().substr(1);
}
const char kRemoteFrontendDomain[] = "chrome-devtools-frontend.appspot.com";
const char kRemoteFrontendBase[] =
"https://chrome-devtools-frontend.appspot.com/";
const char kHttpNotFound[] = "HTTP/1.1 404 Not Found\n\n";
class FetchRequest : public net::URLFetcherDelegate {
public:
FetchRequest(net::URLRequestContextGetter* request_context,
const GURL& url,
const content::URLDataSource::GotDataCallback& callback)
: callback_(callback) {
if (!url.is_valid()) {
OnURLFetchComplete(NULL);
return;
}
fetcher_.reset(net::URLFetcher::Create(url, net::URLFetcher::GET, this));
fetcher_->SetRequestContext(request_context);
fetcher_->Start();
}
private:
virtual ~FetchRequest() {}
virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE {
std::string response;
if (source)
source->GetResponseAsString(&response);
else
response = kHttpNotFound;
callback_.Run(base::RefCountedString::TakeString(&response));
delete this;
}
scoped_ptr<net::URLFetcher> fetcher_;
content::URLDataSource::GotDataCallback callback_;
};
std::string GetMimeTypeForPath(const std::string& path) {
std::string filename = PathWithoutParams(path);
if (EndsWith(filename, ".html", false)) {
return "text/html";
} else if (EndsWith(filename, ".css", false)) {
return "text/css";
} else if (EndsWith(filename, ".js", false)) {
return "application/javascript";
} else if (EndsWith(filename, ".png", false)) {
return "image/png";
} else if (EndsWith(filename, ".gif", false)) {
return "image/gif";
} else if (EndsWith(filename, ".manifest", false)) {
return "text/cache-manifest";
}
NOTREACHED();
return "text/plain";
}
class BundledDataSource : public content::URLDataSource {
public:
explicit BundledDataSource() {
}
// content::URLDataSource implementation.
virtual std::string GetSource() const OVERRIDE {
return chrome::kChromeUIDevToolsBundledHost;
}
virtual void StartDataRequest(
const std::string& path,
bool is_incognito,
const content::URLDataSource::GotDataCallback& callback) OVERRIDE {
std::string filename = PathWithoutParams(path);
int resource_id =
content::DevToolsHttpHandler::GetFrontendResourceId(filename);
DLOG_IF(WARNING, -1 == resource_id) << "Unable to find dev tool resource: "
<< filename << ". If you compiled with debug_devtools=1, try running"
" with --debug-devtools.";
const ResourceBundle& rb = ResourceBundle::GetSharedInstance();
scoped_refptr<base::RefCountedStaticMemory> bytes(rb.LoadDataResourceBytes(
resource_id));
callback.Run(bytes);
}
virtual std::string GetMimeType(const std::string& path) const OVERRIDE {
return GetMimeTypeForPath(path);
}
virtual bool ShouldAddContentSecurityPolicy() const OVERRIDE {
return false;
}
private:
virtual ~BundledDataSource() {}
DISALLOW_COPY_AND_ASSIGN(BundledDataSource);
};
class RemoteDataSource : public content::URLDataSource {
public:
explicit RemoteDataSource(net::URLRequestContextGetter*
request_context) : request_context_(request_context) {
}
// content::URLDataSource implementation.
virtual std::string GetSource() const OVERRIDE {
return chrome::kChromeUIDevToolsRemoteHost;
}
virtual void StartDataRequest(
const std::string& path,
bool is_incognito,
const content::URLDataSource::GotDataCallback& callback) OVERRIDE {
GURL url = GURL(kRemoteFrontendBase + path);
CHECK_EQ(url.host(), kRemoteFrontendDomain);
new FetchRequest(request_context_, url, callback);
}
virtual std::string GetMimeType(const std::string& path) const OVERRIDE {
return GetMimeTypeForPath(path);
}
virtual bool ShouldAddContentSecurityPolicy() const OVERRIDE {
return false;
}
private:
virtual ~RemoteDataSource() {}
scoped_refptr<net::URLRequestContextGetter> request_context_;
DISALLOW_COPY_AND_ASSIGN(RemoteDataSource);
};
#if defined(DEBUG_DEVTOOLS)
class LocalhostDataSource : public content::URLDataSource {
public:
explicit LocalhostDataSource(net::URLRequestContextGetter*
request_context) : request_context_(request_context) {
}
// content::URLDataSource implementation.
virtual std::string GetSource() const OVERRIDE {
return "localhost";
}
virtual void StartDataRequest(
const std::string& path,
bool is_incognito,
const content::URLDataSource::GotDataCallback& callback) OVERRIDE {
GURL url = GURL("http://localhost:9222/" + path);
new FetchRequest(request_context_, url, callback);
}
virtual std::string GetMimeType(const std::string& path) const OVERRIDE {
return GetMimeTypeForPath(path);
}
virtual bool ShouldAddContentSecurityPolicy() const OVERRIDE {
return false;
}
private:
virtual ~LocalhostDataSource() {}
scoped_refptr<net::URLRequestContextGetter> request_context_;
DISALLOW_COPY_AND_ASSIGN(LocalhostDataSource);
};
#endif // defined(DEBUG_DEVTOOLS)
} // namespace
// static
GURL DevToolsUI::GetProxyURL(const std::string& frontend_url) {
#if defined(DEBUG_DEVTOOLS)
if (frontend_url.find(chrome::kChromeUIDevToolsBundledHost) == 1) {
return GURL(base::StringPrintf("%s://localhost%s",
chrome::kChromeDevToolsScheme,
frontend_url.c_str()));
}
#endif // defined(DEBUG_DEVTOOLS)
GURL url(frontend_url);
CHECK(url.is_valid());
CHECK_EQ(url.host(), kRemoteFrontendDomain);
return GURL(base::StringPrintf("%s://%s/%s", chrome::kChromeDevToolsScheme,
chrome::kChromeUIDevToolsRemoteHost,
url.path().substr(1).c_str()));
}
DevToolsUI::DevToolsUI(content::WebUI* web_ui) : WebUIController(web_ui) {
web_ui->SetBindings(0);
Profile* profile = Profile::FromWebUI(web_ui);
content::URLDataSource::Add(
profile,
new BundledDataSource());
content::URLDataSource::Add(
profile,
new RemoteDataSource(profile->GetRequestContext()));
#if defined(DEBUG_DEVTOOLS)
content::URLDataSource::Add(
profile,
new LocalhostDataSource(profile->GetRequestContext()));
#endif // defined(DEBUG_DEVTOOLS)
}
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