Support sync file io for pepper, to support LSOs

BUG=chromium-os:7492
TEST=run pepper flash (with LSO support) on http://www.bestflashanimationsite.com/tutorials/4/ , check that it properly stores the objects.

Review URL: http://codereview.chromium.org/3800010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@63003 0039d316-1c4b-4281-b951-d872f2087c98

5 files changed, 303 insertions, 8 deletions

diff --git a/webkit/glue/plugins/pepper_dir_contents.h b/webkit/glue/plugins/pepper_dir_contents.h
new file mode 100644
index 0000000..661c577
--- /dev/null
+++ b/webkit/glue/plugins/pepper_dir_contents.h
@@ -0,0 +1,18 @@
+// Copyright (c) 2010 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.
+
+#ifndef WEBKIT_GLUE_PLUGINS_PEPPER_DIR_CONTENTS_H_
+#define WEBKIT_GLUE_PLUGINS_PEPPER_DIR_CONTENTS_H_
+
+#include <vector>
+#include "base/file_path.h"
+
+struct PepperDirEntry {
+  FilePath name;
+  bool is_dir;
+};
+
+typedef std::vector<PepperDirEntry> PepperDirContents;
+
+#endif  // WEBKIT_GLUE_PLUGINS_PEPPER_DIR_CONTENTS_H_
diff --git a/webkit/glue/plugins/pepper_plugin_delegate.h b/webkit/glue/plugins/pepper_plugin_delegate.h
index f080f34..7558a2c 100644
--- a/webkit/glue/plugins/pepper_plugin_delegate.h
+++ b/webkit/glue/plugins/pepper_plugin_delegate.h
@@ -16,6 +16,7 @@
 #include "third_party/ppapi/c/pp_completion_callback.h"
 #include "third_party/ppapi/c/pp_errors.h"
 #include "third_party/ppapi/c/pp_stdint.h"
+#include "webkit/glue/plugins/pepper_dir_contents.h"
 
 class AudioMessageFilter;
 class GURL;
@@ -191,6 +192,31 @@ class PluginDelegate {
                       const FilePath& new_file_path,
                       fileapi::FileSystemCallbackDispatcher* dispatcher) = 0;
 
+  virtual base::PlatformFileError OpenModuleLocalFile(
+      const std::string& module_name,
+      const FilePath& path,
+      int flags,
+      base::PlatformFile* file) = 0;
+  virtual base::PlatformFileError RenameModuleLocalFile(
+      const std::string& module_name,
+      const FilePath& path_from,
+      const FilePath& path_to) = 0;
+  virtual base::PlatformFileError DeleteModuleLocalFileOrDir(
+      const std::string& module_name,
+      const FilePath& path,
+      bool recursive) = 0;
+  virtual base::PlatformFileError CreateModuleLocalDir(
+      const std::string& module_name,
+      const FilePath& path) = 0;
+  virtual base::PlatformFileError QueryModuleLocalFile(
+      const std::string& module_name,
+      const FilePath& path,
+      base::PlatformFileInfo* info) = 0;
+  virtual base::PlatformFileError GetModuleLocalDirContents(
+      const std::string& module_name,
+      const FilePath& path,
+      PepperDirContents* contents) = 0;
+
   // Returns a MessageLoopProxy instance associated with the message loop
   // of the file thread in this renderer.
   virtual scoped_refptr<base::MessageLoopProxy>
diff --git a/webkit/glue/plugins/pepper_plugin_module.h b/webkit/glue/plugins/pepper_plugin_module.h
index edb9e12..4ac13c3 100644
--- a/webkit/glue/plugins/pepper_plugin_module.h
+++ b/webkit/glue/plugins/pepper_plugin_module.h
@@ -61,6 +61,9 @@ class PluginModule : public base::RefCounted<PluginModule>,
 
   PP_Module pp_module() const { return pp_module_; }
 
+  void set_name(const std::string& name) { name_ = name; }
+  const std::string& name() const { return name_; }
+
   PluginInstance* CreateInstance(PluginDelegate* delegate);
 
   // Returns "some" plugin instance associated with this module. This is not
@@ -115,6 +118,9 @@ class PluginModule : public base::RefCounted<PluginModule>,
   // implementation.
   EntryPoints entry_points_;
 
+  // The name of the module.
+  std::string name_;
+
   // Non-owning pointers to all instances associated with this module. When
   // there are no more instances, this object should be deleted.
   typedef std::set<PluginInstance*> PluginInstanceSet;
diff --git a/webkit/glue/plugins/pepper_private2.cc b/webkit/glue/plugins/pepper_private2.cc
index 71ffc4b..a96ef30 100644
--- a/webkit/glue/plugins/pepper_private2.cc
+++ b/webkit/glue/plugins/pepper_private2.cc
@@ -4,8 +4,15 @@
 
 #include "webkit/glue/plugins/pepper_private2.h"
 
+#include <string.h>
+
+#include "base/file_path.h"
 #include "base/stringprintf.h"
+#include "base/utf_string_conversions.h"
 #include "googleurl/src/gurl.h"
+#include "third_party/ppapi/c/dev/pp_file_info_dev.h"
+#include "third_party/ppapi/c/dev/ppb_file_io_dev.h"
+#include "webkit/glue/plugins/pepper_error_util.h"
 #include "webkit/glue/plugins/pepper_plugin_delegate.h"
 #include "webkit/glue/plugins/pepper_plugin_instance.h"
 #include "webkit/glue/plugins/pepper_plugin_module.h"
@@ -16,6 +23,14 @@ namespace pepper {
 
 namespace {
 
+PluginInstance* GetSomeInstance(PP_Module pp_module) {
+  PluginModule* module = ResourceTracker::Get()->GetModule(pp_module);
+  if (!module)
+    return NULL;
+
+  return module->GetSomeInstance();
+}
+
 void SetInstanceAlwaysOnTop(PP_Instance pp_instance, bool on_top) {
   PluginInstance* instance = ResourceTracker::Get()->GetInstance(pp_instance);
   if (!instance)
@@ -24,11 +39,7 @@ void SetInstanceAlwaysOnTop(PP_Instance pp_instance, bool on_top) {
 }
 
 PP_Var GetProxyForURL(PP_Module pp_module, const char* url) {
-  PluginModule* module = ResourceTracker::Get()->GetModule(pp_module);
-  if (!module)
-    return PP_MakeUndefined();
-
-  PluginInstance* instance = module->GetSomeInstance();
+  PluginInstance* instance = GetSomeInstance(pp_module);
   if (!instance)
     return PP_MakeUndefined();
 
@@ -39,13 +50,177 @@ PP_Var GetProxyForURL(PP_Module pp_module, const char* url) {
   std::string proxy_host = instance->delegate()->ResolveProxy(gurl);
   if (proxy_host.empty())
     return PP_MakeUndefined();  // No proxy.
-  return StringVar::StringToPPVar(module, proxy_host);
+  return StringVar::StringToPPVar(instance->module(), proxy_host);
+}
+
+FilePath GetFilePathFromUTF8(const char* path) {
+#if defined(OS_WIN)
+  return FilePath(UTF8ToUTF16(path));
+#else
+  return FilePath(path);
+#endif
+}
+
+int32_t OpenModuleLocalFile(PP_Module module,
+                            const char* path,
+                            int32_t mode,
+                            PP_FileHandle* file) {
+  PluginInstance* instance = GetSomeInstance(module);
+  if (!instance)
+    return PP_ERROR_FAILED;
+
+  int flags = 0;
+  if (mode & PP_FILEOPENFLAG_READ)
+    flags |= base::PLATFORM_FILE_READ;
+  if (mode & PP_FILEOPENFLAG_WRITE) {
+    flags |= base::PLATFORM_FILE_WRITE;
+    flags |= base::PLATFORM_FILE_WRITE_ATTRIBUTES;
+  }
+  if (mode & PP_FILEOPENFLAG_TRUNCATE) {
+    DCHECK(mode & PP_FILEOPENFLAG_WRITE);
+    flags |= base::PLATFORM_FILE_TRUNCATE;
+  }
+
+  if (mode & PP_FILEOPENFLAG_CREATE) {
+    if (mode & PP_FILEOPENFLAG_EXCLUSIVE)
+      flags |= base::PLATFORM_FILE_CREATE;
+    else
+      flags |= base::PLATFORM_FILE_OPEN_ALWAYS;
+  } else {
+    flags |= base::PLATFORM_FILE_OPEN;
+  }
+
+  base::PlatformFile base_file;
+  base::PlatformFileError result = instance->delegate()->OpenModuleLocalFile(
+      instance->module()->name(),
+      GetFilePathFromUTF8(path),
+      flags,
+      &base_file);
+  *file = base_file;
+  return PlatformFileErrorToPepperError(result);
+}
+
+
+int32_t RenameModuleLocalFile(PP_Module module,
+                              const char* path_from,
+                              const char* path_to) {
+  PluginInstance* instance = GetSomeInstance(module);
+  if (!instance)
+    return PP_ERROR_FAILED;
+
+  base::PlatformFileError result = instance->delegate()->RenameModuleLocalFile(
+      instance->module()->name(),
+      GetFilePathFromUTF8(path_from),
+      GetFilePathFromUTF8(path_to));
+  return PlatformFileErrorToPepperError(result);
+}
+
+int32_t DeleteModuleLocalFileOrDir(PP_Module module,
+                                   const char* path,
+                                   bool recursive) {
+  PluginInstance* instance = GetSomeInstance(module);
+  if (!instance)
+    return PP_ERROR_FAILED;
+
+  base::PlatformFileError result =
+      instance->delegate()->DeleteModuleLocalFileOrDir(
+          instance->module()->name(), GetFilePathFromUTF8(path), recursive);
+  return PlatformFileErrorToPepperError(result);
+}
+
+int32_t CreateModuleLocalDir(PP_Module module, const char* path) {
+  PluginInstance* instance = GetSomeInstance(module);
+  if (!instance)
+    return PP_ERROR_FAILED;
+
+  base::PlatformFileError result = instance->delegate()->CreateModuleLocalDir(
+      instance->module()->name(), GetFilePathFromUTF8(path));
+  return PlatformFileErrorToPepperError(result);
+}
+
+int32_t QueryModuleLocalFile(PP_Module module,
+                             const char* path,
+                             PP_FileInfo_Dev* info) {
+  PluginInstance* instance = GetSomeInstance(module);
+  if (!instance)
+    return PP_ERROR_FAILED;
+
+  base::PlatformFileInfo file_info;
+  base::PlatformFileError result = instance->delegate()->QueryModuleLocalFile(
+      instance->module()->name(), GetFilePathFromUTF8(path), &file_info);
+  if (result == base::PLATFORM_FILE_OK) {
+    info->size = file_info.size;
+    info->creation_time = file_info.creation_time.ToDoubleT();
+    info->last_access_time = file_info.last_accessed.ToDoubleT();
+    info->last_modified_time = file_info.last_modified.ToDoubleT();
+    info->system_type = PP_FILESYSTEMTYPE_EXTERNAL;
+    if (file_info.is_directory)
+      info->type = PP_FILETYPE_DIRECTORY;
+    else
+      info->type = PP_FILETYPE_REGULAR;
+  }
+  return PlatformFileErrorToPepperError(result);
+}
+
+int32_t GetModuleLocalDirContents(PP_Module module,
+                                  const char* path,
+                                  PP_DirContents_Dev** contents) {
+  PluginInstance* instance = GetSomeInstance(module);
+  if (!instance)
+    return PP_ERROR_FAILED;
+
+  *contents = NULL;
+  PepperDirContents pepper_contents;
+  base::PlatformFileError result =
+      instance->delegate()->GetModuleLocalDirContents(
+          instance->module()->name(),
+          GetFilePathFromUTF8(path),
+          &pepper_contents);
+
+  if (result != base::PLATFORM_FILE_OK)
+    return PlatformFileErrorToPepperError(result);
+
+  *contents = new PP_DirContents_Dev;
+  size_t count = pepper_contents.size();
+  (*contents)->count = count;
+  (*contents)->entries = new PP_DirEntry_Dev[count];
+  for (size_t i = 0; i < count; ++i) {
+    PP_DirEntry_Dev& entry = (*contents)->entries[i];
+#if defined(OS_WIN)
+    const std::string& name = UTF16ToUTF8(pepper_contents[i].name.value());
+#else
+    const std::string& name = pepper_contents[i].name.value();
+#endif
+    size_t size = name.size() + 1;
+    char* name_copy = new char[size];
+    memcpy(name_copy, name.c_str(), size);
+    entry.name = name_copy;
+    entry.is_dir = pepper_contents[i].is_dir;
+  }
+  return PP_OK;
+}
+
+void FreeModuleLocalDirContents(PP_Module module,
+                                PP_DirContents_Dev* contents) {
+  DCHECK(contents);
+  for (int32_t i = 0; i < contents->count; ++i) {
+    delete [] contents->entries[i].name;
+  }
+  delete [] contents->entries;
+  delete contents;
 }
 
 const PPB_Private2 ppb_private2 = {
   &SetInstanceAlwaysOnTop,
   &Private2::DrawGlyphs,
-  &GetProxyForURL
+  &GetProxyForURL,
+  &OpenModuleLocalFile,
+  &RenameModuleLocalFile,
+  &DeleteModuleLocalFileOrDir,
+  &CreateModuleLocalDir,
+  &QueryModuleLocalFile,
+  &GetModuleLocalDirContents,
+  &FreeModuleLocalDirContents,
 };
 
 }  // namespace
diff --git a/webkit/glue/plugins/ppb_private2.h b/webkit/glue/plugins/ppb_private2.h
index 667d5c5..0b0df98 100644
--- a/webkit/glue/plugins/ppb_private2.h
+++ b/webkit/glue/plugins/ppb_private2.h
@@ -5,6 +5,11 @@
 #ifndef WEBKIT_GLUE_PLUGINS_PPB_PRIVATE2_H_
 #define WEBKIT_GLUE_PLUGINS_PPB_PRIVATE2_H_
 
+#ifdef _WIN32
+#include <windows.h>
+#endif
+
+#include "third_party/ppapi/c/pp_errors.h"
 #include "third_party/ppapi/c/pp_instance.h"
 #include "third_party/ppapi/c/pp_module.h"
 #include "third_party/ppapi/c/pp_point.h"
@@ -12,9 +17,28 @@
 #include "third_party/ppapi/c/pp_resource.h"
 #include "third_party/ppapi/c/pp_var.h"
 
-#define PPB_PRIVATE2_INTERFACE "PPB_Private2;2"
+#define PPB_PRIVATE2_INTERFACE "PPB_Private2;3"
+
+#ifdef _WIN32
+typedef HANDLE PP_FileHandle;
+static const PP_FileHandle PP_kInvalidFileHandle = NULL;
+#else
+typedef int PP_FileHandle;
+static const PP_FileHandle PP_kInvalidFileHandle = -1;
+#endif
 
 struct PP_FontDescription_Dev;
+struct PP_FileInfo_Dev;
+
+struct PP_DirEntry_Dev {
+  const char* name;
+  bool is_dir;
+};
+
+struct PP_DirContents_Dev {
+  int32_t count;
+  PP_DirEntry_Dev* entries;
+};
 
 struct PPB_Private2 {
   // Sets or clears the rendering hint that the given plugin instance is always
@@ -35,6 +59,52 @@ struct PPB_Private2 {
   // Retrieves the proxy that will be used for the given URL. The result will
   // be a string in PAC format, or an undefined var on error.
   PP_Var (*GetProxyForURL)(PP_Module module, const char* url);
+
+  // Opens a module-local file, returning a file descriptor (posix) or a HANDLE
+  // (win32) into file. Module-local file paths (here and below) are
+  // '/'-separated UTF-8 strings, relative to a module-specific root. The return
+  // value is the ppapi error, PP_OK if success, one of the PP_ERROR_* in case
+  // of failure.
+  int32_t (*OpenModuleLocalFile)(PP_Module module,
+                                 const char* path,
+                                 int32_t mode,
+                                 PP_FileHandle* file);
+
+  // Renames a module-local file. The return value is the ppapi error, PP_OK if
+  // success, one of the PP_ERROR_* in case of failure.
+  int32_t (*RenameModuleLocalFile)(PP_Module module,
+                                   const char* path_from,
+                                   const char* path_to);
+
+  // Deletes a module-local file or directory. If recursive is set and the path
+  // points to a directory, deletes all the contents of the directory. The
+  // return value is the ppapi error, PP_OK if success, one of the PP_ERROR_* in
+  // case of failure.
+  int32_t (*DeleteModuleLocalFileOrDir)(PP_Module module,
+                                        const char* path,
+                                        bool recursive);
+
+  // Creates a module-local directory. The return value is the ppapi error,
+  // PP_OK if success, one of the PP_ERROR_* in case of failure.
+  int32_t (*CreateModuleLocalDir)(PP_Module module, const char* path);
+
+  // Queries information about a module-local file. The return value is the
+  // ppapi error, PP_OK if success, one of the PP_ERROR_* in case of failure.
+  int32_t (*QueryModuleLocalFile)(PP_Module module,
+                                  const char* path,
+                                  PP_FileInfo_Dev* info);
+
+  // Gets the list of files contained in a module-local directory. The return
+  // value is the ppapi error, PP_OK if success, one of the PP_ERROR_* in case
+  // of failure. If non-NULL, the returned contents should be freed with
+  // FreeModuleLocalDirContents.
+  int32_t (*GetModuleLocalDirContents)(PP_Module module,
+                                       const char* path,
+                                       PP_DirContents_Dev** contents);
+
+  // Frees the data allocated by GetModuleLocalDirContents.
+  void (*FreeModuleLocalDirContents)(PP_Module module,
+                                     PP_DirContents_Dev* contents);
 };
 
 #endif  // WEBKIT_GLUE_PLUGINS_PPB_PRIVATE2_H_