Refactored the PPB_Flash_File_ModuleLocal/FileRef to the new ppapi resource model

ppapi/proxy/flash_file_resource.cc

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ppapi/proxy/flash_file_resource.h"
+
+#include "base/file_path.h"
+#include "ipc/ipc_message.h"
+#include "ppapi/c/pp_errors.h"
+#include "ppapi/proxy/ppapi_messages.h"
+#include "ppapi/shared_impl/file_type_conversion.h"
+#include "ppapi/shared_impl/scoped_pp_var.h"
+#include "ppapi/shared_impl/time_conversion.h"
+#include "ppapi/shared_impl/var.h"
+#include "ppapi/thunk/enter.h"
+
+namespace ppapi {
+namespace proxy {
+
+namespace {
+
+// Returns the path that a PPB_FileRef resource references as long as it is an
+// PP_FILESYSTEMTYPE_EXTERNAL path. Returns an empty string on error.
+std::string GetPathFromFileRef(PP_Resource file_ref) {
+  thunk::EnterResourceNoLock<thunk::PPB_FileRef_API> enter(file_ref, true);
+  if (enter.failed())
+    return std::string();
+  if (enter.object()->GetFileSystemType() != PP_FILESYSTEMTYPE_EXTERNAL)
+    return std::string();
+  ScopedPPVar var(ScopedPPVar::PassRef(), enter.object()->GetAbsolutePath());
+  StringVar* string_var = StringVar::FromPPVar(var.get());
+  if (!string_var)
+    return std::string();
+  return string_var->value();
+}
+
+}  // namespace
+
+FlashFileResource::FlashFileResource(Connection connection,
+                                     PP_Instance instance)
+    : PluginResource(connection, instance) {
+  SendCreate(BROWSER, PpapiHostMsg_FlashFile_Create());
+}
+
+FlashFileResource::~FlashFileResource() {
+}
+
+thunk::PPB_Flash_File_API* FlashFileResource::AsPPB_Flash_File_API() {
+  return this;
+}
+
+int32_t FlashFileResource::OpenFile(PP_Instance /*instance*/,
+                                    const char* path,
+                                    int32_t mode,
+                                    PP_FileHandle* file) {
+  return OpenFileHelper(path, PepperFilePath::DOMAIN_MODULE_LOCAL, mode, file);
+}
+
+int32_t FlashFileResource::RenameFile(PP_Instance /*instance*/,
+                                      const char* path_from,
+                                      const char* path_to) {
+  PepperFilePath pepper_from(PepperFilePath::DOMAIN_MODULE_LOCAL,
+                             FilePath::FromUTF8Unsafe(path_from));
+  PepperFilePath pepper_to(PepperFilePath::DOMAIN_MODULE_LOCAL,
+                           FilePath::FromUTF8Unsafe(path_to));
+
+  int32_t error = SyncCall<IPC::Message>(
+      BROWSER, PpapiHostMsg_FlashFile_RenameFile(pepper_from, pepper_to));
+
+  return error;
+}
+
+int32_t FlashFileResource::DeleteFileOrDir(PP_Instance /*instance*/,
+                                           const char* path,
+                                           PP_Bool recursive) {
+  PepperFilePath pepper_path(PepperFilePath::DOMAIN_MODULE_LOCAL,
+                             FilePath::FromUTF8Unsafe(path));
+
+  int32_t error = SyncCall<IPC::Message>(
+      BROWSER, PpapiHostMsg_FlashFile_DeleteFileOrDir(pepper_path,
+                                                      PP_ToBool(recursive)));
+
+  return error;
+}
+
+int32_t FlashFileResource::CreateDir(PP_Instance /*instance*/,
+                                     const char* path) {
+  PepperFilePath pepper_path(PepperFilePath::DOMAIN_MODULE_LOCAL,
+                             FilePath::FromUTF8Unsafe(path));
+
+  int32_t error = SyncCall<IPC::Message>(BROWSER,
+      PpapiHostMsg_FlashFile_CreateDir(pepper_path));
+
+  return error;
+}
+
+int32_t FlashFileResource::QueryFile(PP_Instance /*instance*/,
+                                     const char* path,
+                                     PP_FileInfo* info) {
+  return QueryFileHelper(path, PepperFilePath::DOMAIN_MODULE_LOCAL, info);
+}
+
+int32_t FlashFileResource::GetDirContents(PP_Instance /*instance*/,
+                                          const char* path,
+                                          PP_DirContents_Dev** contents) {
+  ppapi::DirContents entries;
+  PepperFilePath pepper_path(PepperFilePath::DOMAIN_MODULE_LOCAL,
+                             FilePath::FromUTF8Unsafe(path));
+
+  int32_t error = SyncCall<PpapiPluginMsg_FlashFile_GetDirContentsReply>(
+      BROWSER, PpapiHostMsg_FlashFile_GetDirContents(pepper_path), &entries);
+
+  if (error == PP_OK) {
+    // Copy the serialized dir entries to the output struct.
+    *contents = new PP_DirContents_Dev;
+    (*contents)->count = static_cast<int32_t>(entries.size());
+    (*contents)->entries = new PP_DirEntry_Dev[entries.size()];
+    for (size_t i = 0; i < entries.size(); i++) {
+      const ppapi::DirEntry& source = entries[i];
+      PP_DirEntry_Dev* dest = &(*contents)->entries[i];
+      std::string name = source.name.AsUTF8Unsafe();
+      char* name_copy = new char[name.size() + 1];
+      memcpy(name_copy, name.c_str(), name.size() + 1);
+      dest->name = name_copy;
+      dest->is_dir = PP_FromBool(source.is_dir);
+    }
+  }
+
+  return error;
+}
+
+void FlashFileResource::FreeDirContents(PP_Instance /*instance*/,
+                                        PP_DirContents_Dev* contents) {
+  for (int32_t i = 0; i < contents->count; ++i)
+    delete[] contents->entries[i].name;
+  delete[] contents->entries;
+  delete contents;
+}
+
+int32_t FlashFileResource::CreateTemporaryFile(PP_Instance /*instance*/,
+                                               PP_FileHandle* file) {
+  if (!file)
+    return PP_ERROR_BADARGUMENT;
+
+  IPC::Message unused;
+  ResourceMessageReplyParams reply_params;
+  int32_t error = GenericSyncCall(BROWSER,
+      PpapiHostMsg_FlashFile_CreateTemporaryFile(), &unused, &reply_params);
+  if (error != PP_OK)
+    return error;
+
+  IPC::PlatformFileForTransit transit_file;
+  if (!reply_params.TakeFileHandleAtIndex(0, &transit_file))
+    return PP_ERROR_FAILED;
+
+  *file = IPC::PlatformFileForTransitToPlatformFile(transit_file);
+  return PP_OK;
+}
+
+int32_t FlashFileResource::OpenFileRef(PP_Instance /*instance*/,
+                                       PP_Resource file_ref,
+                                       int32_t mode,
+                                       PP_FileHandle* file) {
+  return OpenFileHelper(GetPathFromFileRef(file_ref),
+                        PepperFilePath::DOMAIN_ABSOLUTE, mode, file);
+}
+
+int32_t FlashFileResource::QueryFileRef(PP_Instance /*instance*/,
+                                        PP_Resource file_ref,
+                                        PP_FileInfo* info) {
+  return QueryFileHelper(GetPathFromFileRef(file_ref),
+                         PepperFilePath::DOMAIN_ABSOLUTE, info);
+}
+
+int32_t FlashFileResource::OpenFileHelper(const std::string& path,
+                                          PepperFilePath::Domain domain_type,
+                                          int32_t mode,
+                                          PP_FileHandle* file) {
+  int flags = 0;
+  if (path.empty() ||
+      !ppapi::PepperFileOpenFlagsToPlatformFileFlags(mode, &flags) ||
+      !file)
+    return PP_ERROR_BADARGUMENT;
+
+  PepperFilePath pepper_path(domain_type, FilePath::FromUTF8Unsafe(path));
+
+  IPC::Message unused;
+  ResourceMessageReplyParams reply_params;
+  int32_t error = GenericSyncCall(BROWSER,
+      PpapiHostMsg_FlashFile_OpenFile(pepper_path, flags), &unused,
+      &reply_params);
+  if (error != PP_OK)
+    return error;
+
+  IPC::PlatformFileForTransit transit_file;
+  if (!reply_params.TakeFileHandleAtIndex(0, &transit_file))
+    return PP_ERROR_FAILED;
+
+  *file = IPC::PlatformFileForTransitToPlatformFile(transit_file);
+  return PP_OK;
+}
+
+int32_t FlashFileResource::QueryFileHelper(const std::string& path,
+                                           PepperFilePath::Domain domain_type,
+                                           PP_FileInfo* info) {
+  if (path.empty() || !info)
+    return PP_ERROR_BADARGUMENT;
+
+  base::PlatformFileInfo file_info;
+  PepperFilePath pepper_path(domain_type, FilePath::FromUTF8Unsafe(path));
+
+  int32_t error = SyncCall<PpapiPluginMsg_FlashFile_QueryFileReply>(BROWSER,
+      PpapiHostMsg_FlashFile_QueryFile(pepper_path), &file_info);
+
+  if (error == PP_OK) {
+    info->size = file_info.size;
+    info->creation_time = TimeToPPTime(file_info.creation_time);
+    info->last_access_time = TimeToPPTime(file_info.last_accessed);
+    info->last_modified_time = TimeToPPTime(file_info.last_modified);
+    info->system_type = PP_FILESYSTEMTYPE_EXTERNAL;
+    if (file_info.is_directory)
+      info->type = PP_FILETYPE_DIRECTORY;
+    else
+      info->type = PP_FILETYPE_REGULAR;
+  }
+
+  return error;
+}
+
+}  // namespace proxy
+}  // namespace ppapi