mojo filesystem: Further clean ups.

components/filesystem/file_system_impl.cc

 // Copyright 2015 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 "components/filesystem/file_system_impl.h"
 
 #include <stddef.h>
 #include <utility>
 
-#include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_file.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "build/build_config.h"
 #include "components/filesystem/directory_impl.h"
 #include "mojo/shell/public/cpp/connection.h"
 #include "url/gurl.h"
 
-#if defined(OS_WIN)
-#include "base/base_paths_win.h"
-#include "base/path_service.h"
-#include "base/strings/utf_string_conversions.h"
-#elif defined(OS_ANDROID)
-#include "base/base_paths_android.h"
-#include "base/path_service.h"
-#elif defined(OS_LINUX)
-#include "base/environment.h"
-#include "base/nix/xdg_util.h"
-#elif defined(OS_MACOSX)
-#include "base/base_paths_mac.h"
-#include "base/path_service.h"
-#endif
-
 namespace filesystem {
 
-namespace {
-
-const char kEscapeChar = ',';
-
-const char kUserDataDir[] = "user-data-dir";
-
-}  // namespace filesystem
-
 FileSystemImpl::FileSystemImpl(mojo::Connection* connection,
                                mojo::InterfaceRequest<FileSystem> request,
+                               base::FilePath persistent_dir,
                                LockTable* lock_table)
     : remote_application_url_(connection->GetRemoteApplicationURL()),
       binding_(this, std::move(request)),
-      lock_table_(lock_table) {}
+      lock_table_(lock_table),
+      persistent_dir_(persistent_dir) {}
 
 FileSystemImpl::~FileSystemImpl() {
 }
 
-void FileSystemImpl::OpenFileSystem(const mojo::String& file_system,
-                                    mojo::InterfaceRequest<Directory> directory,
-                                    FileSystemClientPtr client,
-                                    const OpenFileSystemCallback& callback) {
+void FileSystemImpl::OpenTempDirectory(
+    mojo::InterfaceRequest<Directory> directory,
+    const OpenTempDirectoryCallback& callback) {
   // Set only if the |DirectoryImpl| will own a temporary directory.
-  scoped_ptr<base::ScopedTempDir> temp_dir;
-  base::FilePath path;
-  if (file_system.get() == std::string("temp")) {
-    temp_dir.reset(new base::ScopedTempDir);
-    CHECK(temp_dir->CreateUniqueTempDir());
-    path = temp_dir->path();
-  } else if (file_system.get() == std::string("origin")) {
-    base::FilePath base_profile_dir = GetSystemProfileDir();
+  scoped_ptr<base::ScopedTempDir> temp_dir(new base::ScopedTempDir);
+  CHECK(temp_dir->CreateUniqueTempDir());
 
-    // Sanitize the url for disk access.
-    //
-    // TODO(erg): While it's currently impossible, we need to deal with http://
-    // URLs that have a path. (Or make the decision that these file systems are
-    // path bound, not origin bound.)
-    std::string sanitized_origin;
-    BuildSanitizedOrigin(remote_application_url_, &sanitized_origin);
-
-#if defined(OS_WIN)
-    path = base_profile_dir.Append(base::UTF8ToWide(sanitized_origin));
-#else
-    path = base_profile_dir.Append(sanitized_origin);
-#endif
-    if (!base::PathExists(path))
-      base::CreateDirectory(path);
-  }
-
-  if (!path.empty()) {
-    new DirectoryImpl(
-        std::move(directory), path, std::move(temp_dir), lock_table_);
-    callback.Run(FileError::OK);
-  } else {
-    callback.Run(FileError::FAILED);
-  }
+  base::FilePath path = temp_dir->path();
+  new DirectoryImpl(
+      std::move(directory), path, std::move(temp_dir), lock_table_);
+  callback.Run(FileError::OK);
 }
 
-base::FilePath FileSystemImpl::GetSystemProfileDir() const {
-  base::FilePath path;
-
-  base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
-  if (command_line->HasSwitch(kUserDataDir)) {
-    path = command_line->GetSwitchValuePath(kUserDataDir);
-  } else {
-#if defined(OS_WIN)
-    CHECK(PathService::Get(base::DIR_LOCAL_APP_DATA, &path));
-    path = path.Append(FILE_PATH_LITERAL("mandoline"));
-#elif defined(OS_LINUX)
-    scoped_ptr<base::Environment> env(base::Environment::Create());
-    base::FilePath config_dir(
-        base::nix::GetXDGDirectory(env.get(),
-                                   base::nix::kXdgConfigHomeEnvVar,
-                                   base::nix::kDotConfigDir));
-    path = config_dir.Append("mandoline");
-#elif defined(OS_MACOSX)
-    CHECK(PathService::Get(base::DIR_APP_DATA, &path));
-    path = path.Append("Mandoline Shell");
-#elif defined(OS_ANDROID)
-    CHECK(PathService::Get(base::DIR_ANDROID_APP_DATA, &path));
-    path = path.Append(FILE_PATH_LITERAL("mandoline"));
-#else
-    NOTIMPLEMENTED();
-#endif
-  }
-
+void FileSystemImpl::OpenPersistentFileSystem(
+    mojo::InterfaceRequest<Directory> directory,
+    const OpenPersistentFileSystemCallback& callback) {
+  scoped_ptr<base::ScopedTempDir> temp_dir;
+  base::FilePath path = persistent_dir_;
   if (!base::PathExists(path))
     base::CreateDirectory(path);
 
-  return path;
-}
-
-void FileSystemImpl::BuildSanitizedOrigin(
-    const std::string& origin,
-    std::string* sanitized_origin) {
-  // We take the origin string, and encode it in a way safe for filesystem
-  // access. This is vaguely based on //net/tools/dump_cache/
-  // url_to_filename_encoder.h; that file strips out schemes, and does weird
-  // things with subdirectories. We do follow the basic algorithm used there,
-  // including using ',' as our escape character.
-  for (size_t i = 0; i < origin.length(); ++i) {
-    unsigned char ch = origin[i];
-    char encoded[3];
-    int encoded_len;
-    if ((ch == '_') || (ch == '.') || (ch == '=') || (ch == '+') ||
-        (ch == '-') || (('0' <= ch) && (ch <= '9')) ||
-        (('A' <= ch) && (ch <= 'Z')) || (('a' <= ch) && (ch <= 'z'))) {
-      encoded[0] = ch;
-      encoded_len = 1;
-    } else {
-      encoded[0] = kEscapeChar;
-      encoded[1] = ch / 16;
-      encoded[1] += (encoded[1] >= 10) ? 'A' - 10 : '0';
-      encoded[2] = ch % 16;
-      encoded[2] += (encoded[2] >= 10) ? 'A' - 10 : '0';
-      encoded_len = 3;
-    }
-    sanitized_origin->append(encoded, encoded_len);
-  }
+  new DirectoryImpl(
+      std::move(directory), path, std::move(temp_dir), lock_table_);
+  callback.Run(FileError::OK);
 }
 
 }  // namespace filesystem