content/browser/renderer_host/pepper/content_browser_pepper_host_factory.cc

   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 "content/browser/renderer_host/pepper/content_browser_pepper_host_factory.h"
   6
   7 #include "content/browser/renderer_host/pepper/browser_ppapi_host_impl.h"
   8 #include "content/browser/renderer_host/pepper/pepper_browser_font_singleton_host.h"
   9 #include "content/browser/renderer_host/pepper/pepper_file_io_host.h"
  10 #include "content/browser/renderer_host/pepper/pepper_file_ref_host.h"
  11 #include "content/browser/renderer_host/pepper/pepper_file_system_browser_host.h"
  12 #include "content/browser/renderer_host/pepper/pepper_flash_file_message_filter.h"
  13 #include "content/browser/renderer_host/pepper/pepper_gamepad_host.h"
  14 #include "content/browser/renderer_host/pepper/pepper_host_resolver_message_filter.h"
  15 #include "content/browser/renderer_host/pepper/pepper_network_monitor_host.h"
  16 #include "content/browser/renderer_host/pepper/pepper_network_proxy_host.h"
  17 #include "content/browser/renderer_host/pepper/pepper_print_settings_manager.h"
  18 #include "content/browser/renderer_host/pepper/pepper_printing_host.h"
  19 #include "content/browser/renderer_host/pepper/pepper_tcp_server_socket_message_filter.h"
  20 #include "content/browser/renderer_host/pepper/pepper_tcp_socket_message_filter.h"
  21 #include "content/browser/renderer_host/pepper/pepper_truetype_font_host.h"
  22 #include "content/browser/renderer_host/pepper/pepper_truetype_font_list_host.h"
  23 #include "content/browser/renderer_host/pepper/pepper_udp_socket_message_filter.h"
  24 #include "ppapi/host/message_filter_host.h"
  25 #include "ppapi/host/ppapi_host.h"
  26 #include "ppapi/host/resource_host.h"
  27 #include "ppapi/proxy/ppapi_messages.h"
  28 #include "ppapi/shared_impl/ppapi_permissions.h"
  29
  30 using ppapi::host::MessageFilterHost;
  31 using ppapi::host::ResourceHost;
  32 using ppapi::host::ResourceMessageFilter;
  33 using ppapi::proxy::SerializedTrueTypeFontDesc;
  34 using ppapi::UnpackMessage;
  35
  36 namespace content {
  37
  38 namespace {
  39
  40 const size_t kMaxSocketsAllowed = 1024;
  41
  42 bool CanCreateSocket() {
  43   return PepperTCPServerSocketMessageFilter::GetNumInstances() +
  44              PepperTCPSocketMessageFilter::GetNumInstances() +
  45              PepperUDPSocketMessageFilter::GetNumInstances() <
  46          kMaxSocketsAllowed;
  47 }
  48
  49 }  // namespace
  50
  51 ContentBrowserPepperHostFactory::ContentBrowserPepperHostFactory(
  52     BrowserPpapiHostImpl* host)
  53     : host_(host) {}
  54
  55 ContentBrowserPepperHostFactory::~ContentBrowserPepperHostFactory() {}
  56
  57 scoped_ptr<ResourceHost> ContentBrowserPepperHostFactory::CreateResourceHost(
  58     ppapi::host::PpapiHost* host,
  59     PP_Resource resource,
  60     PP_Instance instance,
  61     const IPC::Message& message) {
  62   DCHECK(host == host_->GetPpapiHost());
  63
  64   // Make sure the plugin is giving us a valid instance for this resource.
  65   if (!host_->IsValidInstance(instance))
  66     return scoped_ptr<ResourceHost>();
  67
  68   // Public interfaces.
  69   switch (message.type()) {
  70     case PpapiHostMsg_FileIO_Create::ID: {
  71       return scoped_ptr<ResourceHost>(
  72           new PepperFileIOHost(host_, instance, resource));
  73     }
  74     case PpapiHostMsg_FileSystem_Create::ID: {
  75       PP_FileSystemType file_system_type;
  76       if (!ppapi::UnpackMessage<PpapiHostMsg_FileSystem_Create>(
  77               message, &file_system_type)) {
  78         NOTREACHED();
  79         return scoped_ptr<ResourceHost>();
  80       }
  81       return scoped_ptr<ResourceHost>(new PepperFileSystemBrowserHost(
  82           host_, instance, resource, file_system_type));
  83     }
  84     case PpapiHostMsg_Gamepad_Create::ID: {
  85       return scoped_ptr<ResourceHost>(
  86           new PepperGamepadHost(host_, instance, resource));
  87     }
  88     case PpapiHostMsg_NetworkProxy_Create::ID: {
  89       return scoped_ptr<ResourceHost>(
  90           new PepperNetworkProxyHost(host_, instance, resource));
  91     }
  92     case PpapiHostMsg_HostResolver_Create::ID: {
  93       scoped_refptr<ResourceMessageFilter> host_resolver(
  94           new PepperHostResolverMessageFilter(host_, instance, false));
  95       return scoped_ptr<ResourceHost>(new MessageFilterHost(
  96           host_->GetPpapiHost(), instance, resource, host_resolver));
  97     }
  98     case PpapiHostMsg_FileRef_CreateForFileAPI::ID: {
  99       PP_Resource file_system;
 100       std::string internal_path;
 101       if (!UnpackMessage<PpapiHostMsg_FileRef_CreateForFileAPI>(
 102               message, &file_system, &internal_path)) {
 103         NOTREACHED();
 104         return scoped_ptr<ResourceHost>();
 105       }
 106       return scoped_ptr<ResourceHost>(new PepperFileRefHost(
 107           host_, instance, resource, file_system, internal_path));
 108     }
 109     case PpapiHostMsg_TCPSocket_Create::ID: {
 110       ppapi::TCPSocketVersion version;
 111       if (!UnpackMessage<PpapiHostMsg_TCPSocket_Create>(message, &version) ||
 112           version == ppapi::TCP_SOCKET_VERSION_PRIVATE) {
 113         return scoped_ptr<ResourceHost>();
 114       }
 115
 116       return CreateNewTCPSocket(instance, resource, version);
 117     }
 118     case PpapiHostMsg_UDPSocket_Create::ID: {
 119       if (CanCreateSocket()) {
 120         scoped_refptr<ResourceMessageFilter> udp_socket(
 121             new PepperUDPSocketMessageFilter(host_, instance, false));
 122         return scoped_ptr<ResourceHost>(new MessageFilterHost(
 123             host_->GetPpapiHost(), instance, resource, udp_socket));
 124       } else {
 125         return scoped_ptr<ResourceHost>();
 126       }
 127     }
 128   }
 129
 130   // Dev interfaces.
 131   if (GetPermissions().HasPermission(ppapi::PERMISSION_DEV)) {
 132     switch (message.type()) {
 133       case PpapiHostMsg_Printing_Create::ID: {
 134         scoped_ptr<PepperPrintSettingsManager> manager(
 135             new PepperPrintSettingsManagerImpl());
 136         return scoped_ptr<ResourceHost>(new PepperPrintingHost(
 137             host_->GetPpapiHost(), instance, resource, manager.Pass()));
 138       }
 139       case PpapiHostMsg_TrueTypeFont_Create::ID: {
 140         SerializedTrueTypeFontDesc desc;
 141         if (!UnpackMessage<PpapiHostMsg_TrueTypeFont_Create>(message, &desc)) {
 142           NOTREACHED();
 143           return scoped_ptr<ResourceHost>();
 144         }
 145         // Check that the family name is valid UTF-8 before passing it to the
 146         // host OS.
 147         if (!base::IsStringUTF8(desc.family))
 148           return scoped_ptr<ResourceHost>();
 149
 150         return scoped_ptr<ResourceHost>(
 151             new PepperTrueTypeFontHost(host_, instance, resource, desc));
 152       }
 153       case PpapiHostMsg_TrueTypeFontSingleton_Create::ID: {
 154         return scoped_ptr<ResourceHost>(
 155             new PepperTrueTypeFontListHost(host_, instance, resource));
 156       }
 157     }
 158   }
 159
 160   // Private interfaces.
 161   if (GetPermissions().HasPermission(ppapi::PERMISSION_PRIVATE)) {
 162     switch (message.type()) {
 163       case PpapiHostMsg_BrowserFontSingleton_Create::ID:
 164         return scoped_ptr<ResourceHost>(
 165             new PepperBrowserFontSingletonHost(host_, instance, resource));
 166     }
 167   }
 168
 169   // Permissions for the following interfaces will be checked at the
 170   // time of the corresponding instance's methods calls (because
 171   // permission check can be performed only on the UI
 172   // thread). Currently these interfaces are available only for
 173   // whitelisted apps which may not have access to the other private
 174   // interfaces.
 175   if (message.type() == PpapiHostMsg_HostResolver_CreatePrivate::ID) {
 176     scoped_refptr<ResourceMessageFilter> host_resolver(
 177         new PepperHostResolverMessageFilter(host_, instance, true));
 178     return scoped_ptr<ResourceHost>(new MessageFilterHost(
 179         host_->GetPpapiHost(), instance, resource, host_resolver));
 180   }
 181   if (message.type() == PpapiHostMsg_TCPServerSocket_CreatePrivate::ID) {
 182     if (CanCreateSocket()) {
 183       scoped_refptr<ResourceMessageFilter> tcp_server_socket(
 184           new PepperTCPServerSocketMessageFilter(this, host_, instance, true));
 185       return scoped_ptr<ResourceHost>(new MessageFilterHost(
 186           host_->GetPpapiHost(), instance, resource, tcp_server_socket));
 187     } else {
 188       return scoped_ptr<ResourceHost>();
 189     }
 190   }
 191   if (message.type() == PpapiHostMsg_TCPSocket_CreatePrivate::ID) {
 192     return CreateNewTCPSocket(instance, resource,
 193                               ppapi::TCP_SOCKET_VERSION_PRIVATE);
 194   }
 195   if (message.type() == PpapiHostMsg_UDPSocket_CreatePrivate::ID) {
 196     if (CanCreateSocket()) {
 197       scoped_refptr<ResourceMessageFilter> udp_socket(
 198           new PepperUDPSocketMessageFilter(host_, instance, true));
 199       return scoped_ptr<ResourceHost>(new MessageFilterHost(
 200           host_->GetPpapiHost(), instance, resource, udp_socket));
 201     } else {
 202       return scoped_ptr<ResourceHost>();
 203     }
 204   }
 205   if (message.type() == PpapiHostMsg_NetworkMonitor_Create::ID) {
 206     return scoped_ptr<ResourceHost>(
 207         new PepperNetworkMonitorHost(host_, instance, resource));
 208   }
 209
 210   // Flash interfaces.
 211   if (GetPermissions().HasPermission(ppapi::PERMISSION_FLASH)) {
 212     switch (message.type()) {
 213       case PpapiHostMsg_FlashFile_Create::ID: {
 214         scoped_refptr<ResourceMessageFilter> file_filter(
 215             new PepperFlashFileMessageFilter(instance, host_));
 216         return scoped_ptr<ResourceHost>(new MessageFilterHost(
 217             host_->GetPpapiHost(), instance, resource, file_filter));
 218       }
 219     }
 220   }
 221
 222   return scoped_ptr<ResourceHost>();
 223 }
 224
 225 scoped_ptr<ppapi::host::ResourceHost>
 226 ContentBrowserPepperHostFactory::CreateAcceptedTCPSocket(
 227     PP_Instance instance,
 228     ppapi::TCPSocketVersion version,
 229     scoped_ptr<net::TCPSocket> socket) {
 230   if (!CanCreateSocket())
 231     return scoped_ptr<ResourceHost>();
 232   scoped_refptr<ResourceMessageFilter> tcp_socket(
 233       new PepperTCPSocketMessageFilter(
 234           host_, instance, version, socket.Pass()));
 235   return scoped_ptr<ResourceHost>(
 236       new MessageFilterHost(host_->GetPpapiHost(), instance, 0, tcp_socket));
 237 }
 238
 239 scoped_ptr<ppapi::host::ResourceHost>
 240 ContentBrowserPepperHostFactory::CreateNewTCPSocket(
 241     PP_Instance instance,
 242     PP_Resource resource,
 243     ppapi::TCPSocketVersion version) {
 244   if (!CanCreateSocket())
 245     return scoped_ptr<ResourceHost>();
 246
 247   scoped_refptr<ResourceMessageFilter> tcp_socket(
 248       new PepperTCPSocketMessageFilter(this, host_, instance, version));
 249   if (!tcp_socket.get())
 250     return scoped_ptr<ResourceHost>();
 251
 252   return scoped_ptr<ResourceHost>(new MessageFilterHost(
 253       host_->GetPpapiHost(), instance, resource, tcp_socket));
 254 }
 255
 256 const ppapi::PpapiPermissions& ContentBrowserPepperHostFactory::GetPermissions()
 257     const {
 258   return host_->GetPpapiHost()->permissions();
 259 }
 260
 261 }  // namespace content