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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at */
#include "nsKeychainMigrationUtils.h"
#include <Security/Security.h>
#include "mozilla/Logging.h"
#include "nsCocoaUtils.h"
#include "nsString.h"
using namespace mozilla;
LazyLogModule gKeychainUtilsLog("keychainmigrationutils");
NS_IMPL_ISUPPORTS(nsKeychainMigrationUtils, nsIKeychainMigrationUtils)
nsKeychainMigrationUtils::GetGenericPassword(const nsACString& aServiceName,
const nsACString& aAccountName, nsACString& aKey) {
// To retrieve a secret, we create a CFDictionary of the form:
// { class: generic password,
// service: the given service name
// account: the given account name,
// match limit: match one,
// return attributes: true,
// return data: true }
// This searches for and returns the attributes and data for the secret
// matching the given service and account names. We then extract the data
// (i.e. the secret) and return it.
NSDictionary* searchDictionary = @{
(__bridge NSString*)kSecClass : (__bridge NSString*)kSecClassGenericPassword,
(__bridge NSString*)kSecAttrService : nsCocoaUtils::ToNSString(aServiceName),
(__bridge NSString*)kSecAttrAccount : nsCocoaUtils::ToNSString(aAccountName),
(__bridge NSString*)kSecMatchLimit : (__bridge NSString*)kSecMatchLimitOne,
(__bridge NSString*)kSecReturnAttributes : @YES,
(__bridge NSString*)kSecReturnData : @YES
CFTypeRef item;
OSStatus rv = SecItemCopyMatching((__bridge CFDictionaryRef)searchDictionary, &item);
if (rv != errSecSuccess) {
MOZ_LOG(gKeychainUtilsLog, LogLevel::Debug, ("SecItemCopyMatching failed: %d", rv));
NSDictionary* resultDict = [(__bridge NSDictionary*)item autorelease];
NSData* secret = [resultDict objectForKey:(__bridge NSString*)kSecValueData];
if (!secret) {
MOZ_LOG(gKeychainUtilsLog, LogLevel::Debug, ("objectForKey failed"));
if ([secret length] != 0) {
// We assume that the data is UTF-8 encoded since that seems to be common and
// Keychain Access shows it with that encoding.
aKey.Assign(reinterpret_cast<const char*>([secret bytes]), [secret length]);
return NS_OK;