src/chrome/browser/apps/app_url_redirector.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/apps/app_url_redirector.h"
   6
   7 #include "apps/launcher.h"
   8 #include "base/bind.h"
   9 #include "base/logging.h"
  10 #include "chrome/browser/prerender/prerender_contents.h"
  11 #include "chrome/browser/profiles/profile.h"
  12 #include "chrome/browser/profiles/profile_io_data.h"
  13 #include "chrome/common/extensions/api/url_handlers/url_handlers_parser.h"
  14 #include "components/navigation_interception/intercept_navigation_resource_throttle.h"
  15 #include "components/navigation_interception/navigation_params.h"
  16 #include "content/public/browser/browser_thread.h"
  17 #include "content/public/browser/render_view_host.h"
  18 #include "content/public/browser/resource_request_info.h"
  19 #include "content/public/browser/resource_throttle.h"
  20 #include "content/public/browser/web_contents.h"
  21 #include "extensions/browser/info_map.h"
  22 #include "extensions/common/extension.h"
  23 #include "extensions/common/extension_set.h"
  24 #include "net/url_request/url_request.h"
  25
  26 using content::BrowserThread;
  27 using content::ResourceRequestInfo;
  28 using content::WebContents;
  29 using extensions::Extension;
  30 using extensions::UrlHandlers;
  31 using extensions::UrlHandlerInfo;
  32
  33 namespace {
  34
  35 bool LaunchAppWithUrl(
  36     const scoped_refptr<const Extension> app,
  37     const std::string& handler_id,
  38     content::WebContents* source,
  39     const navigation_interception::NavigationParams& params) {
  40   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
  41
  42   // Redirect top-level navigations only. This excludes iframes and webviews
  43   // in particular.
  44   if (source->IsSubframe()) {
  45     DVLOG(1) << "Cancel redirection: source is a subframe";
  46     return false;
  47   }
  48
  49   // If prerendering, don't launch the app but abort the navigation.
  50   prerender::PrerenderContents* prerender_contents =
  51       prerender::PrerenderContents::FromWebContents(source);
  52   if (prerender_contents) {
  53     prerender_contents->Destroy(prerender::FINAL_STATUS_NAVIGATION_INTERCEPTED);
  54     return true;
  55   }
  56
  57   // These are guaranteed by CreateThrottleFor below.
  58   DCHECK(!params.is_post());
  59   DCHECK(UrlHandlers::CanExtensionHandleUrl(app.get(), params.url()));
  60
  61   Profile* profile =
  62       Profile::FromBrowserContext(source->GetBrowserContext());
  63
  64   DVLOG(1) << "Launching app handler with URL: "
  65            << params.url().spec() << " -> "
  66            << app->name() << "(" << app->id() << "):" << handler_id;
  67   apps::LaunchPlatformAppWithUrl(
  68       profile, app.get(), handler_id, params.url(), params.referrer().url);
  69
  70   return true;
  71 }
  72
  73 }  // namespace
  74
  75 // static
  76 content::ResourceThrottle*
  77 AppUrlRedirector::MaybeCreateThrottleFor(net::URLRequest* request,
  78                                          ProfileIOData* profile_io_data) {
  79   DVLOG(1) << "Considering URL for redirection: "
  80            << request->method() << " " << request->url().spec();
  81
  82   // Support only GET for now.
  83   if (request->method() != "GET") {
  84     DVLOG(1) << "Skip redirection: method is not GET";
  85     return NULL;
  86   }
  87
  88   if (!request->url().SchemeIsHTTPOrHTTPS()) {
  89     DVLOG(1) << "Skip redirection: scheme is not HTTP or HTTPS";
  90     return NULL;
  91   }
  92
  93   // The user has indicated that a URL should be force downloaded. Turn off
  94   // URL redirection in this case.
  95   if (ResourceRequestInfo::ForRequest(request)->IsDownload()) {
  96     DVLOG(1) << "Skip redirection: request is a forced download";
  97     return NULL;
  98   }
  99
 100   // Never redirect URLs to apps in incognito. Technically, apps are not
 101   // supported in incognito, but that may change in future.
 102   // See crbug.com/240879, which tracks incognito support for v2 apps.
 103   if (profile_io_data->IsOffTheRecord()) {
 104     DVLOG(1) << "Skip redirection: unsupported in incognito";
 105     return NULL;
 106   }
 107
 108   const extensions::ExtensionSet& extensions =
 109       profile_io_data->GetExtensionInfoMap()->extensions();
 110   for (extensions::ExtensionSet::const_iterator iter = extensions.begin();
 111        iter != extensions.end();
 112        ++iter) {
 113     const UrlHandlerInfo* handler =
 114         UrlHandlers::FindMatchingUrlHandler(iter->get(), request->url());
 115     if (handler) {
 116       DVLOG(1) << "Found matching app handler for redirection: "
 117                << (*iter)->name() << "(" << (*iter)->id() << "):"
 118                << handler->id;
 119       return new navigation_interception::InterceptNavigationResourceThrottle(
 120           request,
 121           base::Bind(&LaunchAppWithUrl,
 122                      scoped_refptr<const Extension>(*iter),
 123                      handler->id));
 124     }
 125   }
 126
 127   DVLOG(1) << "Skipping redirection: no matching app handler found";
 128   return NULL;
 129 }