mandoline filesystem: Save cookie data to the mojo:filesystem.

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 "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 "components/filesystem/directory_impl.h"
 #include "mojo/application/public/cpp/application_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 = ',';
+
+}  // namespace filesystem
+
 FileSystemImpl::FileSystemImpl(mojo::ApplicationConnection* connection,
                                mojo::InterfaceRequest<FileSystem> request)
     : remote_application_url_(connection->GetRemoteApplicationURL()),
       binding_(this, request.Pass()) {
 }
 
 FileSystemImpl::~FileSystemImpl() {
 }
 
 void FileSystemImpl::OpenFileSystem(const mojo::String& file_system,
                                     mojo::InterfaceRequest<Directory> directory,
                                     const OpenFileSystemCallback& 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")) {
-    // TODO(erg): We should serve a persistent directory based on the
-    // subdirectory |remote_application_url_| of a profile directory.
+    base::FilePath base_profile_dir = GetSystemProfileDir();
+
+    // 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(directory.Pass(), path, temp_dir.Pass());
     callback.Run(FILE_ERROR_OK);
   } else {
     callback.Run(FILE_ERROR_FAILED);
   }
 }
 
+base::FilePath FileSystemImpl::GetSystemProfileDir() const {
+  base::FilePath path;
+
+#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
+
+  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);
+  }
+}
+
 }  // namespace filesystem