Implement Networking Private API VerifyAndEncryptCredentials method

chrome/browser/extensions/api/networking_private/networking_private_credentials_getter_mac.cc

Index: chrome/browser/extensions/api/networking_private/networking_private_credentials_getter_mac.cc
diff --git a/chrome/browser/extensions/api/networking_private/networking_private_credentials_getter_mac.cc b/chrome/browser/extensions/api/networking_private/networking_private_credentials_getter_mac.cc
new file mode 100644
index 0000000000000000000000000000000000000000..6d04259022231fe3b95190af4f4753ea8b0c2655
--- /dev/null
+++ b/chrome/browser/extensions/api/networking_private/networking_private_credentials_getter_mac.cc
@@ -0,0 +1,88 @@
+// Copyright 2014 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/extensions/api/networking_private/networking_private_credentials_getter.h"
+
+#include <Security/Security.h>
+
+#include "base/base64.h"
+#include "base/bind.h"
+#include "chrome/browser/extensions/api/networking_private/networking_private_crypto.h"
+#include "content/public/browser/browser_thread.h"
+
+const char kErrorNotFound[] = "Error.NotFound";
+const char kErrorEncryption[] = "Error.Encryption";
+
+using content::BrowserThread;
+
+namespace extensions {
+
+class NetworkingPrivateCredentialsGetterMac
+    : public NetworkingPrivateCredentialsGetter {
+ public:
+  explicit NetworkingPrivateCredentialsGetterMac();
+
+  virtual void Start(
+      const std::string& network_guid,
+      const std::string& public_key,
+      const extensions::NetworkingPrivateServiceClient::CryptoVerify::
+          VerifyAndEncryptCredentialsCallback& callback) OVERRIDE;
+
+ private:
+  virtual ~NetworkingPrivateCredentialsGetterMac();
+
+  DISALLOW_COPY_AND_ASSIGN(NetworkingPrivateCredentialsGetterMac);
+};
+
+NetworkingPrivateCredentialsGetterMac::NetworkingPrivateCredentialsGetterMac() {
+}
+
+NetworkingPrivateCredentialsGetterMac::
+    ~NetworkingPrivateCredentialsGetterMac() {}
+
+void NetworkingPrivateCredentialsGetterMac::Start(
+    const std::string& network_guid,
+    const std::string& public_key,
+    const extensions::NetworkingPrivateServiceClient::CryptoVerify::
+          VerifyAndEncryptCredentialsCallback& callback) {
+  static const char kAirPortServiceName[] = "AirPort";
+
+  UInt32 password_length = 0;
+  void* password_data = NULL;
+  OSStatus status = noErr;
+  status = SecKeychainFindGenericPassword(NULL,
+                                          strlen(kAirPortServiceName),
+                                          kAirPortServiceName,
+                                          network_guid.length(),
+                                          network_guid.c_str(),
+                                          &password_length,
+                                          &password_data,
+                                          NULL);
+
+  if (status != noErr || !password_data) {
+    callback.Run("", kErrorNotFound);
+    return;
+  }
+
+  std::string key_data(reinterpret_cast<char*>(password_data), password_length);
+  SecKeychainItemFreeContent(NULL, password_data);
+
+  NetworkingPrivateCrypto crypto;
+  std::string ciphertext;
+  if (!crypto.EncryptByteString(public_key, key_data, &ciphertext)) {
+    callback.Run("", kErrorEncryption);
+    return;
+  }
+
+  std::string base64_encoded_ciphertext;
+  base::Base64Encode(ciphertext, &base64_encoded_ciphertext);
+  callback.Run(base64_encoded_ciphertext, "");
+}
+
+NetworkingPrivateCredentialsGetter* NetworkingPrivateCredentialsGetter::
+    Create() {
+  return new NetworkingPrivateCredentialsGetterMac(callback);
+}
+
+}  // namespace extensions