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