/
devtools_ui.cc
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/
devtools_ui.cc
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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-CHROMIUM file.
#include "shell/browser/ui/devtools_ui.h"
#include <memory>
#include <string>
#include <utility>
#include "base/memory/ref_counted_memory.h"
#include "base/strings/strcat.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "chrome/common/webui_url_constants.h"
#include "content/public/browser/devtools_frontend_host.h"
#include "content/public/browser/url_data_source.h"
#include "content/public/browser/web_contents.h"
#include "content/public/browser/web_ui.h"
namespace electron {
namespace {
std::string PathWithoutParams(const std::string& path) {
return GURL(base::StrCat({content::kChromeDevToolsScheme,
url::kStandardSchemeSeparator,
chrome::kChromeUIDevToolsHost}))
.Resolve(path)
.path()
.substr(1);
}
std::string GetMimeTypeForPath(const std::string& path) {
std::string filename = PathWithoutParams(path);
if (base::EndsWith(filename, ".html", base::CompareCase::INSENSITIVE_ASCII)) {
return "text/html";
} else if (base::EndsWith(filename, ".css",
base::CompareCase::INSENSITIVE_ASCII)) {
return "text/css";
} else if (base::EndsWith(filename, ".js",
base::CompareCase::INSENSITIVE_ASCII) ||
base::EndsWith(filename, ".mjs",
base::CompareCase::INSENSITIVE_ASCII)) {
return "application/javascript";
} else if (base::EndsWith(filename, ".png",
base::CompareCase::INSENSITIVE_ASCII)) {
return "image/png";
} else if (base::EndsWith(filename, ".map",
base::CompareCase::INSENSITIVE_ASCII)) {
return "application/json";
} else if (base::EndsWith(filename, ".ts",
base::CompareCase::INSENSITIVE_ASCII)) {
return "application/x-typescript";
} else if (base::EndsWith(filename, ".gif",
base::CompareCase::INSENSITIVE_ASCII)) {
return "image/gif";
} else if (base::EndsWith(filename, ".svg",
base::CompareCase::INSENSITIVE_ASCII)) {
return "image/svg+xml";
} else if (base::EndsWith(filename, ".manifest",
base::CompareCase::INSENSITIVE_ASCII)) {
return "text/cache-manifest";
}
return "text/html";
}
class BundledDataSource : public content::URLDataSource {
public:
BundledDataSource() = default;
~BundledDataSource() override = default;
// content::URLDataSource implementation.
std::string GetSource() override { return chrome::kChromeUIDevToolsHost; }
void StartDataRequest(const GURL& url,
const content::WebContents::Getter& wc_getter,
GotDataCallback callback) override {
const std::string path = content::URLDataSource::URLToRequestPath(url);
// Serve request from local bundle.
std::string bundled_path_prefix(chrome::kChromeUIDevToolsBundledPath);
bundled_path_prefix += "/";
if (base::StartsWith(path, bundled_path_prefix,
base::CompareCase::INSENSITIVE_ASCII)) {
StartBundledDataRequest(path.substr(bundled_path_prefix.length()),
std::move(callback));
return;
}
// We do not handle remote and custom requests.
std::move(callback).Run(nullptr);
}
std::string GetMimeType(const std::string& path) override {
return GetMimeTypeForPath(path);
}
bool ShouldAddContentSecurityPolicy() override { return false; }
bool ShouldDenyXFrameOptions() override { return false; }
bool ShouldServeMimeTypeAsContentTypeHeader() override { return true; }
void StartBundledDataRequest(const std::string& path,
GotDataCallback callback) {
std::string filename = PathWithoutParams(path);
scoped_refptr<base::RefCountedMemory> bytes =
content::DevToolsFrontendHost::GetFrontendResourceBytes(filename);
DLOG_IF(WARNING, !bytes)
<< "Unable to find dev tool resource: " << filename
<< ". If you compiled with debug_devtools=1, try running with "
"--debug-devtools.";
std::move(callback).Run(bytes);
}
private:
DISALLOW_COPY_AND_ASSIGN(BundledDataSource);
};
} // namespace
DevToolsUI::DevToolsUI(content::BrowserContext* browser_context,
content::WebUI* web_ui)
: WebUIController(web_ui) {
web_ui->SetBindings(0);
content::URLDataSource::Add(browser_context,
std::make_unique<BundledDataSource>());
}
} // namespace electron