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crypto/mock_apple_keychain.cc

Index: crypto/mock_apple_keychain.cc
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+// 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 "base/logging.h"
+#include "base/metrics/histogram.h"
+#include "base/time/time.h"
+#include "crypto/mock_apple_keychain.h"
+
+namespace {
+
+// Adds an entry to a local histogram to indicate that the Apple Keychain would
+// have been accessed, if this class were not a mock of the Apple Keychain.
+void IncrementKeychainAccessHistogram() {
+  // This local histogram is accessed by Telemetry to track the number of times
+  // the keychain is accessed, since keychain access is known to be synchronous
+  // and slow.
+  LOCAL_HISTOGRAM_BOOLEAN("OSX.Keychain.Access", true);
+}
+
+}  // namespace
+
+namespace crypto {
+
+OSStatus MockAppleKeychain::FindGenericPassword(
+    CFTypeRef keychainOrArray,
+    UInt32 serviceNameLength,
+    const char* serviceName,
+    UInt32 accountNameLength,
+    const char* accountName,
+    UInt32* passwordLength,
+    void** passwordData,
+    SecKeychainItemRef* itemRef) const {
+  IncrementKeychainAccessHistogram();
+
+  // When simulating |noErr|, return canned |passwordData| and
+  // |passwordLength|.  Otherwise, just return given code.
+  if (find_generic_result_ == noErr) {
+    static const char kPassword[] = "my_password";
+    DCHECK(passwordData);
+    // The function to free this data is mocked so the cast is fine.
+    *passwordData = const_cast<char*>(kPassword);
+    DCHECK(passwordLength);
+    *passwordLength = arraysize(kPassword);
+    password_data_count_++;
+  }
+
+  return find_generic_result_;
+}
+
+OSStatus MockAppleKeychain::ItemFreeContent(SecKeychainAttributeList* attrList,
+                                            void* data) const {
+  // No-op.
+  password_data_count_--;
+  return noErr;
+}
+
+OSStatus MockAppleKeychain::AddGenericPassword(
+    SecKeychainRef keychain,
+    UInt32 serviceNameLength,
+    const char* serviceName,
+    UInt32 accountNameLength,
+    const char* accountName,
+    UInt32 passwordLength,
+    const void* passwordData,
+    SecKeychainItemRef* itemRef) const {
+  IncrementKeychainAccessHistogram();
+
+  called_add_generic_ = true;
+
+  DCHECK_GT(passwordLength, 0U);
+  DCHECK(passwordData);
+  add_generic_password_ =
+      std::string(const_cast<char*>(static_cast<const char*>(passwordData)),
+                  passwordLength);
+  return noErr;
+}
+
+std::string MockAppleKeychain::GetEncryptionPassword() const {
+  IncrementKeychainAccessHistogram();
+  return "mock_password";
+}
+
+}  // namespace crypto