private static string DeencapsulateString(string encapsulated)
{
StringBuilder stringBuilder = new StringBuilder(encapsulated.Length);
int i = 0;
while (i < encapsulated.Length)
{
char c = encapsulated[i];
if (c != '+')
{
if (c != '_')
{
goto IL_48;
}
stringBuilder.Append('/');
}
else
{
char value;
if (!SmtpProxyAddress.ConvertTwoHexCharToChar(encapsulated, i + 1, out value))
{
goto IL_48;
}
stringBuilder.Append(value);
i += 2;
}
IL_56:
i++;
continue;
IL_48:
stringBuilder.Append(encapsulated[i]);
goto IL_56;
}
return(stringBuilder.ToString());
}
public SmtpProxyAddress(string address, bool isPrimaryAddress) : base(ProxyAddressPrefix.Smtp, address, isPrimaryAddress)
{
if (SmtpProxyAddress.IsValidProxyAddress(address))
{
this.smtpAddress = address;
return;
}
throw new ArgumentOutOfRangeException(DataStrings.ExceptionInvalidSmtpAddress(address));
}
private static string DeencapsulateString(string encapsulated, int startIndex, int length)
{
string text = encapsulated.Substring(startIndex, length);
if (text.StartsWith("UTF8" + '-'))
{
return(SmtpProxyAddress.DeencapsulateUTF8String(encapsulated.Substring(startIndex + "UTF8".Length + 1, length - "UTF8".Length - 1)));
}
return(SmtpProxyAddress.DeencapsulateString(text));
}
private static string DeencapsulateUTF8String(string encapsulated)
{
byte[] array = new byte[encapsulated.Length];
int num = 0;
int i = 0;
while (i < encapsulated.Length)
{
char c = encapsulated[i];
if (c != '+')
{
if (c != '_')
{
goto IL_4E;
}
array[num] = 47;
num++;
}
else
{
char c2;
if (!SmtpProxyAddress.ConvertTwoHexCharToChar(encapsulated, i + 1, out c2))
{
goto IL_4E;
}
array[num] = (byte)c2;
i += 2;
num++;
}
IL_6D:
i++;
continue;
IL_4E:
if (encapsulated[i] > 'ÿ')
{
return(null);
}
array[num] = (byte)encapsulated[i];
num++;
goto IL_6D;
}
string result;
try
{
Encoding encoding = new UTF8Encoding(false, true);
result = encoding.GetString(array, 0, num);
}
catch (DecoderFallbackException)
{
result = null;
}
return(result);
}
public static bool TryEncapsulate(string addressType, string address, string domain, out SmtpProxyAddress smtpProxyAddress)
{
smtpProxyAddress = null;
string address2 = SmtpProxyAddress.EncapsulateAddress(addressType, address, domain);
if (Microsoft.Exchange.Data.SmtpAddress.IsValidSmtpAddress(address2))
{
smtpProxyAddress = new SmtpProxyAddress(address2, true);
return(true);
}
return(false);
}
private static ProxyAddress Deencapsulate(string smtpAddress)
{
if (!SmtpProxyAddress.HasEncapsulationPrefix(smtpAddress))
{
return(null);
}
int num = smtpAddress.IndexOf('-');
if (-1 == num)
{
return(null);
}
string text = SmtpProxyAddress.DeencapsulateString(smtpAddress, "IMCEA".Length, num - "IMCEA".Length);
if (string.IsNullOrEmpty(text))
{
return(null);
}
num++;
int num2 = smtpAddress.LastIndexOf('@');
if (num2 == -1 || num2 == smtpAddress.Length - 1)
{
return(null);
}
string text2 = SmtpProxyAddress.DeencapsulateString(smtpAddress, num, num2 - num);
if (string.IsNullOrEmpty(text2))
{
return(null);
}
ProxyAddress result;
try
{
result = ProxyAddress.Parse(text, text2);
}
catch (ArgumentOutOfRangeException)
{
result = null;
}
return(result);
}
private static void EncapsulateStringWithUTF8(StringBuilder encapsulated, string str)
{
byte[] bytes = Encoding.UTF8.GetBytes(str);
foreach (byte b in bytes)
{
char c = (char)b;
if (SmtpProxyAddress.Is1252LetterOrDigit(c))
{
encapsulated.Append(c);
}
else
{
char c2 = c;
switch (c2)
{
case '-':
break;
case '.':
goto IL_65;
case '/':
encapsulated.Append('_');
goto IL_98;
default:
if (c2 != '=')
{
goto IL_65;
}
break;
}
encapsulated.Append(c);
goto IL_98;
IL_65:
encapsulated.Append('+');
encapsulated.Append("0123456789ABCDEF"[(int)(b / 16)]);
encapsulated.Append("0123456789ABCDEF"[(int)(b % 16)]);
}
IL_98 :;
}
}
private static void EncapsulateString(StringBuilder encapsulated, string str)
{
foreach (char c in str)
{
if (SmtpProxyAddress.Is1252LetterOrDigit(c))
{
encapsulated.Append(c);
}
else
{
char c2 = c;
switch (c2)
{
case '-':
break;
case '.':
goto IL_59;
case '/':
encapsulated.Append('_');
goto IL_93;
default:
if (c2 != '=')
{
goto IL_59;
}
break;
}
encapsulated.Append(c);
goto IL_93;
IL_59:
int num = Convert.ToInt32(c);
encapsulated.Append('+');
encapsulated.Append("0123456789ABCDEF"[num / 16]);
encapsulated.Append("0123456789ABCDEF"[num % 16]);
}
IL_93 :;
}
}
private static bool ConvertTwoHexCharToChar(string str, int offset, out char ch)
{
ch = '\0';
if (offset > str.Length - 2)
{
return(false);
}
if (SmtpProxyAddress.Is1252LetterOrDigit(str[offset]) && SmtpProxyAddress.Is1252LetterOrDigit(str[offset + 1]))
{
try
{
ch = (char)(HexConverter.NumFromHex(str[offset]) * 16 + HexConverter.NumFromHex(str[offset + 1]));
return(true);
}
catch (FormatException)
{
return(false);
}
return(false);
}
return(false);
}
public static string EncapsulateAddress(string addressType, string address, string domain)
{
int num = (domain != null) ? domain.Length : 0;
StringBuilder stringBuilder = new StringBuilder("IMCEA", "IMCEA".Length + addressType.Length + address.Length + num + 2);
stringBuilder.Append(addressType);
stringBuilder.Append('-');
if (SmtpProxyAddress.HasTwoByteCharValue(address))
{
stringBuilder.Append("UTF8");
stringBuilder.Append('-');
SmtpProxyAddress.EncapsulateStringWithUTF8(stringBuilder, address);
}
else
{
SmtpProxyAddress.EncapsulateString(stringBuilder, address);
}
if (num != 0)
{
stringBuilder.Append('@');
stringBuilder.Append(domain);
}
return(stringBuilder.ToString());
}
public static bool TryEncapsulate(ProxyAddress address, string domain, out SmtpProxyAddress smtpProxyAddress)
{
return(SmtpProxyAddress.TryEncapsulate(address.PrefixString, address.AddressString, domain, out smtpProxyAddress));
}
public static bool IsEncapsulatedAddress(string smtpAddress)
{
return(SmtpProxyAddress.HasEncapsulationPrefix(smtpAddress) && smtpAddress.IndexOf('-') != -1);
}
public static bool TryDeencapsulate(string address, out ProxyAddress proxyAddress)
{
proxyAddress = SmtpProxyAddress.Deencapsulate(address);
return(proxyAddress != null && !(proxyAddress is InvalidProxyAddress));
}
public bool TryDeencapsulate(out ProxyAddress proxyAddress)
{
return(SmtpProxyAddress.TryDeencapsulate(base.AddressString, out proxyAddress));
}