//------------------------------------------------------------------------------
public KeyChainSerializer()
{
m_keyChainUtils = new KeyChainUtils(() => Android.App.Application.Context,
SettingsConfiguration.KeyStoreFileProtectionPassword,
SettingsConfiguration.KeyStoreFileName,
SettingsBaseConfiguration.EncryptionServiceID);
}
//------------------------------------------------------------------------------
public void Delete(string settingName, SettingBaseAttribute attr)
{
SecStatusCode eCode = KeyChainUtils.DeletePasswordForUsername(
settingName,
m_serviceName,
m_synchronizable);
if (eCode == SecStatusCode.Success)
{
InternalConfiguration.PlatformHelper.Log(LogLevel.Info,
"KeyChainSerializer.Delete - success",
settingName);
}
else
{
bool contains = KeyChainUtils.Contains(settingName, m_serviceName, m_synchronizable);
if (contains)
{
InternalConfiguration.PlatformHelper.Log(LogLevel.Error,
"KeyChainSerializer.Delete error",
String.Format("Setting name is {0}. Error code is {1}",
settingName,
eCode));
}
else
{
InternalConfiguration.PlatformHelper.Log(LogLevel.Info,
"KeyChainSerializer.Delete - no such setting",
settingName);
}
}
}
//------------------------------------------------------------------------------
public void Save(string settingName, SettingBaseAttribute attr, object value)
{
var simpleValue = SettingsSerializerHelper.SimplifyObject(value);
var stringValue = SettingsSerializerHelper.ConvertUsingTypeConverter <String>(simpleValue);
SecStatusCode eCode = KeyChainUtils.SetPasswordForUsername(
settingName,
stringValue,
m_serviceName,
m_secAccessible,
m_synchronizable);
if (eCode == SecStatusCode.Success)
{
InternalConfiguration.PlatformHelper.Log(LogLevel.Info,
"KeyChainSerializer.Save - success",
settingName);
}
else
{
InternalConfiguration.PlatformHelper.Log(LogLevel.Error,
"KeyChainSerializer.Save - error",
String.Format("Setting name is {0}. Error code is {1}",
settingName,
eCode));
}
// keychain error handling from Xamarin.Auth
// https://github.com/xamarin/Xamarin.Auth/blob/master/source/Core/Xamarin.Auth.XamarinIOS/AccountStore/KeyChainAccountStore.Aync.cs
if (eCode != SecStatusCode.Success)
{
StringBuilder sb = new StringBuilder("error = ");
sb.AppendLine("Could not save value to KeyChain: " + eCode);
sb.AppendLine("Add Empty Entitlements.plist ");
sb.AppendLine("File /+ New file /+ iOS /+ Entitlements.plist");
/*
* Error: Could not save account to KeyChain -- iOS 10 #128
* https://github.com/xamarin/Xamarin.Auth/issues/128
* https://bugzilla.xamarin.com/show_bug.cgi?id=43514
*/
if ((int)eCode == -34018)
{
// http://stackoverflow.com/questions/38456471/secitemadd-always-returns-error-34018-in-xcode-8-in-ios-10-simulator
// NOTE: code was not copy/pasted! That was iOS sample
sb.AppendLine("SecKeyChain.Add returned : " + eCode);
sb.AppendLine("1. Add Keychain Access Groups to the Entitlements file.");
sb.AppendLine("2. Turn on the Keychain Sharing switch in the Capabilities section in the app.");
}
string msg = sb.ToString();
throw new ExceptionForUser(new Exception(msg));
}
}
//------------------------------------------------------------------------------
public bool Load(string settingName, SettingBaseAttribute attr, out object value)
{
if (!KeyChainUtils.Contains(settingName, m_serviceName, m_synchronizable))
{
InternalConfiguration.PlatformHelper.Log(LogLevel.Info,
"KeyChainSerializer.Load - no such setting",
settingName);
value = null;
return(false);
}
string stringValue;
SecStatusCode eCode = KeyChainUtils.GetPasswordForUsername(
settingName,
m_serviceName,
out stringValue,
m_synchronizable);
if (eCode != SecStatusCode.Success || stringValue == null)
{
Advexp.LogLevel ll = Advexp.LogLevel.None;
if (eCode == SecStatusCode.ItemNotFound)
{
ll = LogLevel.Info;
}
else
{
ll = LogLevel.Error;
}
InternalConfiguration.PlatformHelper.Log(ll,
"KeyChainSerializer.Load - error",
String.Format("Setting is {0}. Error code is {1}",
settingName,
eCode));
value = null;
return(false);
}
// in this case simplified object will be corrected in the SettingsSerializer.cs
value = stringValue;
InternalConfiguration.PlatformHelper.Log(LogLevel.Info,
"KeyChainSerializer.Load - success",
settingName);
return(true);
}
//------------------------------------------------------------------------------
public bool Contains(string settingName, SettingBaseAttribute attr)
{
bool contains = KeyChainUtils.Contains(
settingName,
m_serviceName,
m_synchronizable);
if (contains)
{
InternalConfiguration.PlatformHelper.Log(LogLevel.Info,
"KeyChainSerializer.Contains - setting exists",
settingName);
}
else
{
InternalConfiguration.PlatformHelper.Log(LogLevel.Info,
"KeyChainSerializer.Contains - no such setting",
settingName);
}
return(contains);
}
