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// Copyright (c) 2006-2008 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/browser_url_handler.h"
#include "base/string_util.h"
#include "chrome/browser/browser_about_handler.h"
#include "chrome/browser/dom_ui/dom_ui_factory.h"
#include "chrome/browser/extensions/extension_dom_ui.h"
#include "chrome/browser/profile.h"
#include "chrome/common/url_constants.h"
#include "googleurl/src/gurl.h"
// Handles rewriting view-source URLs for what we'll actually load.
static bool HandleViewSource(GURL* url, Profile* profile) {
if (url->SchemeIs(chrome::kViewSourceScheme)) {
// Load the inner URL instead.
*url = GURL(url->path());
// Bug 26129: limit view-source to view the content and not any
// other kind of 'active' url scheme like 'javascript' or 'data'.
static const char* const allowed_sub_schemes[] = {
chrome::kHttpScheme, chrome::kHttpsScheme, chrome::kFtpScheme,
chrome::kChromeUIScheme
};
bool is_sub_scheme_allowed = false;
for (size_t i = 0; i < arraysize(allowed_sub_schemes); i++) {
if (url->SchemeIs(allowed_sub_schemes[i])) {
is_sub_scheme_allowed = true;
break;
}
}
if (!is_sub_scheme_allowed) {
*url = GURL(chrome::kAboutBlankURL);
return false;
}
return true;
}
return false;
}
// Handles rewriting DOM UI URLs.
static bool HandleDOMUI(GURL* url, Profile* profile) {
if (!DOMUIFactory::UseDOMUIForURL(*url))
return false;
// Special case the new tab page. In older versions of Chrome, the new tab
// page was hosted at chrome-internal:<blah>. This might be in people's saved
// sessions or bookmarks, so we say any URL with that scheme triggers the new
// tab page.
if (url->SchemeIs(chrome::kChromeInternalScheme)) {
// Rewrite it with the proper new tab URL.
*url = GURL(chrome::kChromeUINewTabURL);
}
return true;
}
std::vector<BrowserURLHandler::URLHandler> BrowserURLHandler::url_handlers_;
// static
void BrowserURLHandler::InitURLHandlers() {
if (!url_handlers_.empty())
return;
// Add the default URL handlers.
url_handlers_.push_back(&ExtensionDOMUI::HandleChromeURLOverride);
url_handlers_.push_back(&WillHandleBrowserAboutURL); // about:
url_handlers_.push_back(&HandleDOMUI); // chrome: & friends.
url_handlers_.push_back(&HandleViewSource); // view-source:
}
// static
void BrowserURLHandler::RewriteURLIfNecessary(GURL* url, Profile* profile) {
if (url_handlers_.empty())
InitURLHandlers();
for (size_t i = 0; i < url_handlers_.size(); ++i) {
if ((*url_handlers_[i])(url, profile))
return;
}
}
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