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      1 // Copyright (c) 2012 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/devtools/browser_list_tabcontents_provider.h"
      6 
      7 #include "base/path_service.h"
      8 #include "base/strings/string_number_conversions.h"
      9 #include "chrome/browser/devtools/devtools_target_impl.h"
     10 #include "chrome/browser/history/top_sites.h"
     11 #include "chrome/browser/profiles/profile_manager.h"
     12 #include "chrome/browser/ui/browser.h"
     13 #include "chrome/browser/ui/browser_commands.h"
     14 #include "chrome/browser/ui/browser_iterator.h"
     15 #include "chrome/browser/ui/browser_list.h"
     16 #include "chrome/browser/ui/browser_tabstrip.h"
     17 #include "chrome/browser/ui/host_desktop.h"
     18 #include "chrome/browser/ui/tabs/tab_strip_model.h"
     19 #include "chrome/common/chrome_paths.h"
     20 #include "content/public/browser/web_contents.h"
     21 #include "content/public/common/url_constants.h"
     22 #include "grit/browser_resources.h"
     23 #include "net/socket/tcp_listen_socket.h"
     24 #include "net/url_request/url_request_context_getter.h"
     25 #include "ui/base/resource/resource_bundle.h"
     26 
     27 using content::DevToolsTarget;
     28 using content::RenderViewHost;
     29 using content::WebContents;
     30 
     31 namespace {
     32 
     33 const int kMinTetheringPort = 9333;
     34 const int kMaxTetheringPort = 9444;
     35 
     36 base::LazyInstance<bool>::Leaky g_tethering_enabled = LAZY_INSTANCE_INITIALIZER;
     37 
     38 }
     39 
     40 // static
     41 void BrowserListTabContentsProvider::EnableTethering() {
     42   g_tethering_enabled.Get() = true;
     43 }
     44 
     45 BrowserListTabContentsProvider::BrowserListTabContentsProvider(
     46     chrome::HostDesktopType host_desktop_type)
     47     : host_desktop_type_(host_desktop_type),
     48       last_tethering_port_(kMinTetheringPort) {
     49   g_tethering_enabled.Get() = false;
     50 }
     51 
     52 BrowserListTabContentsProvider::~BrowserListTabContentsProvider() {
     53 }
     54 
     55 std::string BrowserListTabContentsProvider::GetDiscoveryPageHTML() {
     56   std::set<Profile*> profiles;
     57   for (chrome::BrowserIterator it; !it.done(); it.Next())
     58     profiles.insert((*it)->profile());
     59 
     60   for (std::set<Profile*>::iterator it = profiles.begin();
     61        it != profiles.end(); ++it) {
     62     history::TopSites* ts = (*it)->GetTopSites();
     63     if (ts) {
     64       // TopSites updates itself after a delay. Ask TopSites to update itself
     65       // when we're about to show the remote debugging landing page.
     66       ts->SyncWithHistory();
     67     }
     68   }
     69   return ResourceBundle::GetSharedInstance().GetRawDataResource(
     70       IDR_DEVTOOLS_DISCOVERY_PAGE_HTML).as_string();
     71 }
     72 
     73 bool BrowserListTabContentsProvider::BundlesFrontendResources() {
     74   return true;
     75 }
     76 
     77 base::FilePath BrowserListTabContentsProvider::GetDebugFrontendDir() {
     78 #if defined(DEBUG_DEVTOOLS)
     79   base::FilePath inspector_dir;
     80   PathService::Get(chrome::DIR_INSPECTOR, &inspector_dir);
     81   return inspector_dir;
     82 #else
     83   return base::FilePath();
     84 #endif
     85 }
     86 
     87 std::string BrowserListTabContentsProvider::GetPageThumbnailData(
     88     const GURL& url) {
     89   for (chrome::BrowserIterator it; !it.done(); it.Next()) {
     90     Profile* profile = (*it)->profile();
     91     history::TopSites* top_sites = profile->GetTopSites();
     92     if (!top_sites)
     93       continue;
     94     scoped_refptr<base::RefCountedMemory> data;
     95     if (top_sites->GetPageThumbnail(url, false, &data))
     96       return std::string(data->front_as<char>(), data->size());
     97   }
     98 
     99   return std::string();
    100 }
    101 
    102 scoped_ptr<DevToolsTarget>
    103 BrowserListTabContentsProvider::CreateNewTarget(const GURL& url) {
    104   const BrowserList* browser_list =
    105       BrowserList::GetInstance(host_desktop_type_);
    106   WebContents* web_contents;
    107   if (browser_list->empty()) {
    108     chrome::NewEmptyWindow(ProfileManager::GetLastUsedProfile(),
    109         host_desktop_type_);
    110     if (browser_list->empty())
    111       return scoped_ptr<DevToolsTarget>();
    112     web_contents =
    113         browser_list->get(0)->tab_strip_model()->GetActiveWebContents();
    114     web_contents->GetController().LoadURL(url,
    115         content::Referrer(), content::PAGE_TRANSITION_TYPED, std::string());
    116   } else {
    117     web_contents = chrome::AddSelectedTabWithURL(
    118       browser_list->get(0),
    119       url,
    120       content::PAGE_TRANSITION_LINK);
    121   }
    122   content::RenderViewHost* rvh = web_contents->GetRenderViewHost();
    123   if (!rvh)
    124     return scoped_ptr<DevToolsTarget>();
    125   return scoped_ptr<DevToolsTarget>(
    126       DevToolsTargetImpl::CreateForRenderViewHost(rvh, true));
    127 }
    128 
    129 void BrowserListTabContentsProvider::EnumerateTargets(TargetCallback callback) {
    130   DevToolsTargetImpl::EnumerateAllTargets(
    131       *reinterpret_cast<DevToolsTargetImpl::Callback*>(&callback));
    132 }
    133 
    134 scoped_ptr<net::StreamListenSocket>
    135 BrowserListTabContentsProvider::CreateSocketForTethering(
    136     net::StreamListenSocket::Delegate* delegate,
    137     std::string* name) {
    138   if (!g_tethering_enabled.Get())
    139     return scoped_ptr<net::StreamListenSocket>();
    140 
    141   if (last_tethering_port_ == kMaxTetheringPort)
    142     last_tethering_port_ = kMinTetheringPort;
    143   int port = ++last_tethering_port_;
    144   *name = base::IntToString(port);
    145   return net::TCPListenSocket::CreateAndListen("127.0.0.1", port, delegate)
    146       .PassAs<net::StreamListenSocket>();
    147 }
    148