Open pepper files directly in browser.

content/ppapi_plugin/ppapi_thread.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 "content/ppapi_plugin/ppapi_thread.h"
 
 #include <limits>
 
 #include "base/command_line.h"
 #include "base/process_util.h"
 #include "base/rand_util.h"
 #include "base/stringprintf.h"
 #include "base/utf_string_conversions.h"
 #include "content/common/child_process.h"
 #include "content/common/child_process_messages.h"
+#include "content/common/pepper_file_messages.h"
 #include "content/ppapi_plugin/broker_process_dispatcher.h"
 #include "content/ppapi_plugin/plugin_process_dispatcher.h"
 #include "content/ppapi_plugin/ppapi_webkitplatformsupport_impl.h"
 #include "content/public/common/sandbox_init.h"
 #include "ipc/ipc_channel_handle.h"
 #include "ipc/ipc_platform_file.h"
 #include "ipc/ipc_sync_channel.h"
 #include "ppapi/c/dev/ppp_network_state_dev.h"
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/c/ppp.h"
 #include "ppapi/proxy/plugin_globals.h"
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ppapi/proxy/interface_list.h"
+#include "ppapi/shared_impl/file_type_conversion.h"
+#include "ppapi/shared_impl/time_conversion.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebKit.h"
 #include "webkit/plugins/plugin_switches.h"
 
 #if defined(OS_WIN)
 #include "sandbox/src/sandbox.h"
 #elif defined(OS_MACOSX)
 #include "content/common/sandbox_init_mac.h"
 #endif
 
 #if defined(OS_WIN)
@@ skipping 118 matching lines @@
   return Send(msg);
 }
 
 void PpapiThread::PreCacheFont(const void* logfontw) {
 #if defined(OS_WIN)
   Send(new ChildProcessHostMsg_PreCacheFont(
       *static_cast<const LOGFONTW*>(logfontw)));
 #endif
 }
 
+int32_t PpapiThread::SendOpenFileRequestToBrowser(const char* path,
+                                                  int32_t mode,
+                                                  PP_FileHandle* file) {
+  int flags = 0;
+  if (!path ||
+      !ppapi::PepperFileOpenFlagsToPlatformFileFlags(mode, &flags) ||
+      !file)
+    return PP_ERROR_BADARGUMENT;
+
+  base::PlatformFileError error;
+  IPC::PlatformFileForTransit transit_file;
+  webkit::ppapi::PepperFilePath pepper_path(
+      webkit::ppapi::PepperFilePath::DOMAIN_MODULE_LOCAL,
+      FilePath::FromUTF8Unsafe(path));
+
+  if (Send(new PepperFileMsg_OpenFile(pepper_path, flags,
+                                      &error, &transit_file))) {
+    *file = IPC::PlatformFileForTransitToPlatformFile(transit_file);
+  } else {
+    *file = base::kInvalidPlatformFileValue;
+    error = base::PLATFORM_FILE_ERROR_FAILED;
+  }
+
+  return ppapi::PlatformFileErrorToPepperError(error);
+}
+
+int32_t PpapiThread::SendRenameFileRequestToBrowser(const char* from_path,
+                                                    const char* to_path) {
+  base::PlatformFileError error = base::PLATFORM_FILE_ERROR_FAILED;
+  webkit::ppapi::PepperFilePath pepper_from(
+      webkit::ppapi::PepperFilePath::DOMAIN_MODULE_LOCAL,
+      FilePath::FromUTF8Unsafe(from_path));
+  webkit::ppapi::PepperFilePath pepper_to(
+      webkit::ppapi::PepperFilePath::DOMAIN_MODULE_LOCAL,
+      FilePath::FromUTF8Unsafe(to_path));
+
+  Send(new PepperFileMsg_RenameFile(pepper_from, pepper_to, &error));
+  return ppapi::PlatformFileErrorToPepperError(error);
+}
+
+int32_t PpapiThread::SendDeleteFileOrDirRequestToBrowser(const char* path,
+                                                         PP_Bool recursive) {
+  base::PlatformFileError error = base::PLATFORM_FILE_ERROR_FAILED;

[brettw, 2012/05/29 18:14:15]

Is it possible to put all of this message construction stuff in the proxy rather
than in here? I don't see any security reason why the proxy can't generate the
messages.

It may be necessary to move or have a different PepperFilePath in shared_impl or
something so that it can be shared with the browser & proxy.

+  webkit::ppapi::PepperFilePath pepper_path(
+      webkit::ppapi::PepperFilePath::DOMAIN_MODULE_LOCAL,
+      FilePath::FromUTF8Unsafe(path));
+
+  Send(new PepperFileMsg_DeleteFileOrDir(
+      pepper_path, PP_ToBool(recursive), &error));
+
+  return ppapi::PlatformFileErrorToPepperError(error);
+}
+
+int32_t PpapiThread::SendCreateDirRequestToBrowser(const char* path) {
+  base::PlatformFileError error = base::PLATFORM_FILE_ERROR_FAILED;
+  webkit::ppapi::PepperFilePath pepper_path(
+      webkit::ppapi::PepperFilePath::DOMAIN_MODULE_LOCAL,
+      FilePath::FromUTF8Unsafe(path));
+
+  Send(new PepperFileMsg_CreateDir(pepper_path, &error));
+  return ppapi::PlatformFileErrorToPepperError(error);
+}
+
+int32_t PpapiThread::SendQueryFileRequestToBrowser(const char* path,
+                                                   PP_FileInfo* info) {
+  base::PlatformFileInfo file_info;
+  base::PlatformFileError error = base::PLATFORM_FILE_ERROR_FAILED;
+  webkit::ppapi::PepperFilePath pepper_path(
+      webkit::ppapi::PepperFilePath::DOMAIN_MODULE_LOCAL,
+      FilePath::FromUTF8Unsafe(path));
+
+  Send(new PepperFileMsg_QueryFile(pepper_path, &file_info, &error));
+
+  if (error == base::PLATFORM_FILE_OK) {
+    info->size = file_info.size;
+    info->creation_time = ppapi::TimeToPPTime(file_info.creation_time);
+    info->last_access_time = ppapi::TimeToPPTime(file_info.last_accessed);
+    info->last_modified_time = ppapi::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 ppapi::PlatformFileErrorToPepperError(error);
+}
+
+int32_t PpapiThread::SendGetDirContentsRequestToBrowser(
+    const char* path,
+    PP_DirContents_Dev** contents) {
+  webkit::ppapi::DirContents entries;
+  base::PlatformFileError error = base::PLATFORM_FILE_ERROR_FAILED;
+  webkit::ppapi::PepperFilePath pepper_path(
+      webkit::ppapi::PepperFilePath::DOMAIN_MODULE_LOCAL,
+      FilePath::FromUTF8Unsafe(path));
+
+  Send(new PepperFileMsg_GetDirContents(pepper_path, &entries, &error));
+
+  if (error == base::PLATFORM_FILE_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 webkit::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 ppapi::PlatformFileErrorToPepperError(error);
+}
+
 uint32 PpapiThread::Register(ppapi::proxy::PluginDispatcher* plugin_dispatcher) {
   if (!plugin_dispatcher ||
       plugin_dispatchers_.size() >= std::numeric_limits<uint32>::max()) {
     return 0;
   }
 
   uint32 id = 0;
   do {
     // Although it is unlikely, make sure that we won't cause any trouble when
     // the counter overflows.
@@ skipping 172 matching lines @@
 
   // From here, the dispatcher will manage its own lifetime according to the
   // lifetime of the attached channel.
   return true;
 }
 
 void PpapiThread::SavePluginName(const FilePath& path) {
   ppapi::proxy::PluginGlobals::Get()->set_plugin_name(
       path.BaseName().AsUTF8Unsafe());
 }