content/renderer/pepper/pepper_file_system_host.cc

   1 // Copyright (c) 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 "content/renderer/pepper/pepper_file_system_host.h"
   6
   7 #include "base/bind.h"
   8 #include "base/callback.h"
   9 #include "content/child/child_thread.h"
  10 #include "content/child/fileapi/file_system_dispatcher.h"
  11 #include "content/common/pepper_file_util.h"
  12 #include "content/renderer/pepper/pepper_plugin_instance_impl.h"
  13 #include "content/public/renderer/render_view.h"
  14 #include "content/public/renderer/renderer_ppapi_host.h"
  15 #include "ppapi/c/pp_errors.h"
  16 #include "ppapi/host/dispatch_host_message.h"
  17 #include "ppapi/host/ppapi_host.h"
  18 #include "ppapi/proxy/ppapi_messages.h"
  19 #include "ppapi/shared_impl/file_system_util.h"
  20 #include "ppapi/shared_impl/file_type_conversion.h"
  21 #include "storage/common/fileapi/file_system_util.h"
  22 #include "third_party/WebKit/public/web/WebDocument.h"
  23 #include "third_party/WebKit/public/web/WebFrame.h"
  24 #include "third_party/WebKit/public/web/WebView.h"
  25
  26 namespace content {
  27
  28 PepperFileSystemHost::PepperFileSystemHost(RendererPpapiHost* host,
  29                                            PP_Instance instance,
  30                                            PP_Resource resource,
  31                                            PP_FileSystemType type)
  32     : ResourceHost(host->GetPpapiHost(), instance, resource),
  33       renderer_ppapi_host_(host),
  34       type_(type),
  35       opened_(false),
  36       called_open_(false),
  37       weak_factory_(this) {}
  38
  39 PepperFileSystemHost::PepperFileSystemHost(RendererPpapiHost* host,
  40                                            PP_Instance instance,
  41                                            PP_Resource resource,
  42                                            const GURL& root_url,
  43                                            PP_FileSystemType type)
  44     : ResourceHost(host->GetPpapiHost(), instance, resource),
  45       renderer_ppapi_host_(host),
  46       type_(type),
  47       opened_(true),
  48       root_url_(root_url),
  49       called_open_(true),
  50       weak_factory_(this) {}
  51
  52 PepperFileSystemHost::~PepperFileSystemHost() {}
  53
  54 int32_t PepperFileSystemHost::OnResourceMessageReceived(
  55     const IPC::Message& msg,
  56     ppapi::host::HostMessageContext* context) {
  57   PPAPI_BEGIN_MESSAGE_MAP(PepperFileSystemHost, msg)
  58     PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_FileSystem_Open,
  59                                       OnHostMsgOpen)
  60     PPAPI_DISPATCH_HOST_RESOURCE_CALL(
  61         PpapiHostMsg_FileSystem_InitIsolatedFileSystem,
  62         OnHostMsgInitIsolatedFileSystem)
  63   PPAPI_END_MESSAGE_MAP()
  64   return PP_ERROR_FAILED;
  65 }
  66
  67 bool PepperFileSystemHost::IsFileSystemHost() { return true; }
  68
  69 void PepperFileSystemHost::DidOpenFileSystem(
  70     const std::string& /* name_unused */,
  71     const GURL& root) {
  72   opened_ = true;
  73   root_url_ = root;
  74   reply_context_.params.set_result(PP_OK);
  75   host()->SendReply(reply_context_, PpapiPluginMsg_FileSystem_OpenReply());
  76   reply_context_ = ppapi::host::ReplyMessageContext();
  77 }
  78
  79 void PepperFileSystemHost::DidFailOpenFileSystem(base::File::Error error) {
  80   int32 pp_error = ppapi::FileErrorToPepperError(error);
  81   opened_ = (pp_error == PP_OK);
  82   reply_context_.params.set_result(pp_error);
  83   host()->SendReply(reply_context_, PpapiPluginMsg_FileSystem_OpenReply());
  84   reply_context_ = ppapi::host::ReplyMessageContext();
  85 }
  86
  87 int32_t PepperFileSystemHost::OnHostMsgOpen(
  88     ppapi::host::HostMessageContext* context,
  89     int64_t expected_size) {
  90   // Not allow multiple opens.
  91   if (called_open_)
  92     return PP_ERROR_INPROGRESS;
  93   called_open_ = true;
  94
  95   storage::FileSystemType file_system_type =
  96       PepperFileSystemTypeToFileSystemType(type_);
  97   if (file_system_type == storage::kFileSystemTypeUnknown)
  98     return PP_ERROR_FAILED;
  99
 100   GURL document_url = renderer_ppapi_host_->GetDocumentURL(pp_instance());
 101   if (!document_url.is_valid())
 102     return PP_ERROR_FAILED;
 103
 104   FileSystemDispatcher* file_system_dispatcher =
 105       ChildThread::current()->file_system_dispatcher();
 106   reply_context_ = context->MakeReplyMessageContext();
 107   file_system_dispatcher->OpenFileSystem(
 108       document_url.GetOrigin(),
 109       file_system_type,
 110       base::Bind(&PepperFileSystemHost::DidOpenFileSystem,
 111                  weak_factory_.GetWeakPtr()),
 112       base::Bind(&PepperFileSystemHost::DidFailOpenFileSystem,
 113                  weak_factory_.GetWeakPtr()));
 114   return PP_OK_COMPLETIONPENDING;
 115 }
 116
 117 int32_t PepperFileSystemHost::OnHostMsgInitIsolatedFileSystem(
 118     ppapi::host::HostMessageContext* context,
 119     const std::string& fsid,
 120     PP_IsolatedFileSystemType_Private type) {
 121   // Do not allow multiple opens.
 122   if (called_open_)
 123     return PP_ERROR_INPROGRESS;
 124   called_open_ = true;
 125
 126   // Do a sanity check.
 127   if (!storage::ValidateIsolatedFileSystemId(fsid))
 128     return PP_ERROR_BADARGUMENT;
 129
 130   RenderView* view =
 131       renderer_ppapi_host_->GetRenderViewForInstance(pp_instance());
 132   if (!view)
 133     return PP_ERROR_FAILED;
 134
 135   const GURL& url = view->GetWebView()->mainFrame()->document().url();
 136   const std::string root_name = ppapi::IsolatedFileSystemTypeToRootName(type);
 137   if (root_name.empty())
 138     return PP_ERROR_BADARGUMENT;
 139   root_url_ = GURL(storage::GetIsolatedFileSystemRootURIString(
 140       url.GetOrigin(), fsid, root_name));
 141   opened_ = true;
 142   return PP_OK;
 143 }
 144
 145 }  // namespace content