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      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 "content/renderer/pepper/pepper_file_ref_renderer_host.h"
      6 
      7 #include <string>
      8 
      9 #include "net/base/escape.h"
     10 #include "ppapi/c/pp_errors.h"
     11 #include "ppapi/host/ppapi_host.h"
     12 #include "ppapi/shared_impl/file_ref_util.h"
     13 
     14 namespace content {
     15 
     16 PepperFileRefRendererHost::PepperFileRefRendererHost(
     17     RendererPpapiHost* host,
     18     PP_Instance instance,
     19     PP_Resource resource,
     20     PP_Resource file_system,
     21     const std::string& internal_path)
     22     : ResourceHost(host->GetPpapiHost(), instance, resource),
     23       file_system_type_(PP_FILESYSTEMTYPE_INVALID),
     24       internal_path_(internal_path) {
     25   if (!ppapi::IsValidInternalPath(internal_path))
     26     return;
     27   ResourceHost* fs_host = host->GetPpapiHost()->GetResourceHost(file_system);
     28   if (fs_host && fs_host->IsFileSystemHost()) {
     29     fs_host_ = base::AsWeakPtr(static_cast<PepperFileSystemHost*>(fs_host));
     30     file_system_type_ = fs_host_->GetType();
     31   }
     32 }
     33 
     34 PepperFileRefRendererHost::PepperFileRefRendererHost(
     35     RendererPpapiHost* host,
     36     PP_Instance instance,
     37     PP_Resource resource,
     38     const base::FilePath& external_path)
     39     : ResourceHost(host->GetPpapiHost(), instance, resource),
     40       file_system_type_(PP_FILESYSTEMTYPE_EXTERNAL),
     41       external_path_(external_path) {
     42   if (!ppapi::IsValidExternalPath(external_path))
     43     file_system_type_ = PP_FILESYSTEMTYPE_INVALID;
     44 }
     45 
     46 PepperFileRefRendererHost::~PepperFileRefRendererHost() {}
     47 
     48 PP_FileSystemType PepperFileRefRendererHost::GetFileSystemType() const {
     49   return file_system_type_;
     50 }
     51 
     52 GURL PepperFileRefRendererHost::GetFileSystemURL() const {
     53   if (fs_host_.get() && fs_host_->IsOpened() &&
     54       fs_host_->GetRootUrl().is_valid()) {
     55     CHECK(!internal_path_.empty() && internal_path_[0] == '/');
     56     // We strip off the leading slash when passing the URL to Resolve().
     57     // Internal paths are required to be absolute, so we can require this.
     58     return fs_host_->GetRootUrl().Resolve(
     59         net::EscapePath(internal_path_.substr(1)));
     60   }
     61   return GURL();
     62 }
     63 
     64 base::FilePath PepperFileRefRendererHost::GetExternalFilePath() const {
     65   if (file_system_type_ != PP_FILESYSTEMTYPE_EXTERNAL)
     66     return base::FilePath();
     67   return external_path_;
     68 }
     69 
     70 int32_t PepperFileRefRendererHost::OnResourceMessageReceived(
     71     const IPC::Message& msg,
     72     ppapi::host::HostMessageContext* context) {
     73   // We don't handle any messages from the plugin in this host.
     74   NOTREACHED();
     75   return PP_ERROR_FAILED;
     76 }
     77 
     78 bool PepperFileRefRendererHost::IsFileRefHost() { return true; }
     79 
     80 }  // namespace content
     81