Add DeviceSettingsService.

chrome/browser/chromeos/settings/owner_key_util.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 "chrome/browser/chromeos/settings/owner_key_util.h"
+
+#include <limits>
+
+#include "base/file_util.h"
+#include "base/logging.h"
+#include "base/stl_util.h"
+#include "crypto/rsa_private_key.h"
+
+namespace chromeos {
+
+///////////////////////////////////////////////////////////////////////////
+// OwnerKeyUtil
+
+OwnerKeyUtil* OwnerKeyUtil::Create() {
+  return new OwnerKeyUtilImpl(FilePath(OwnerKeyUtilImpl::kOwnerKeyFile));
+}
+
+OwnerKeyUtil::OwnerKeyUtil() {}
+
+OwnerKeyUtil::~OwnerKeyUtil() {}
+
+///////////////////////////////////////////////////////////////////////////
+// OwnerKeyUtilImpl
+
+// static
+const char OwnerKeyUtilImpl::kOwnerKeyFile[] = "/var/lib/whitelist/owner.key";
+
+OwnerKeyUtilImpl::OwnerKeyUtilImpl(const FilePath& key_file)
+    : key_file_(key_file) {}
+
+OwnerKeyUtilImpl::~OwnerKeyUtilImpl() {}
+
+bool OwnerKeyUtilImpl::ImportPublicKey(std::vector<uint8>* output) {
+  // Get the file size (must fit in a 32 bit int for NSS).
+  int64 file_size;
+  if (!file_util::GetFileSize(key_file_, &file_size)) {
+    LOG(ERROR) << "Could not get size of " << key_file_.value();
+    return false;
+  }
+  if (file_size > static_cast<int64>(std::numeric_limits<int>::max())) {
+    LOG(ERROR) << key_file_.value() << "is "
+               << file_size << "bytes!!!  Too big!";
+    return false;
+  }
+  int32 safe_file_size = static_cast<int32>(file_size);
+
+  output->resize(safe_file_size);
+
+  if (safe_file_size == 0) {
+    LOG(WARNING) << "Public key file is empty. This seems wrong.";
+    return false;
+  }
+
+  // Get the key data off of disk
+  int data_read = file_util::ReadFile(
+      key_file_,
+      reinterpret_cast<char*>(vector_as_array(output)),
+      safe_file_size);
+  return data_read == safe_file_size;
+}
+
+crypto::RSAPrivateKey* OwnerKeyUtilImpl::FindPrivateKey(
+    const std::vector<uint8>& key) {
+  return crypto::RSAPrivateKey::FindFromPublicKeyInfo(key);
+}
+
+bool OwnerKeyUtilImpl::IsPublicKeyPresent() {
+  return file_util::PathExists(key_file_);
+}
+
+}  // namespace chromeos