public static bool ValidatePopSettings(bool leaveOnServer, bool mirrored, string host, int port, string username, SecureString password, Pop3AuthenticationMechanism authentication, Pop3SecurityMechanism security, string userLegacyDN, ILog log, out LocalizedException validationException)
{
validationException = null;
bool result2;
using (IPop3Connection pop3Connection = Pop3Connection.CreateInstance(null))
{
Pop3ResultData result = pop3Connection.VerifyAccount();
if (mirrored && !Pop3AutoProvision.SupportsMirroredSubscription(result))
{
validationException = new Pop3MirroredAccountNotPossibleException();
result2 = false;
}
else if (leaveOnServer && !Pop3AutoProvision.SupportsLeaveOnServer(result))
{
validationException = new Pop3LeaveOnServerNotPossibleException();
result2 = false;
}
else
{
result2 = true;
}
}
return(result2);
}
internal Exception TryParseUIDLResponse(Pop3ResultData pop3ResultData)
{
if (this.listings == null || this.listings.Count != pop3ResultData.EmailDropCount)
{
return(new FormatException("'uidl listing' must match the number of emails."));
}
pop3ResultData.AllocateUniqueIds();
List <int> list = null;
for (int i = 0; i < this.listings.Count; i++)
{
string[] array = this.listings[i].Split(Pop3Response.wordDelimiters, StringSplitOptions.RemoveEmptyEntries);
if (array.Length < 2)
{
return(new FormatException("'uidl listing' must have at least 2 words"));
}
int num;
if (!int.TryParse(array[0], NumberStyles.Integer, CultureInfo.InvariantCulture, out num))
{
return(new FormatException("'id' must be a number."));
}
if (num <= 0)
{
return(new FormatException("'id' must be greater than zero."));
}
if (num <= pop3ResultData.EmailDropCount)
{
string text = array[1];
if (!string.IsNullOrEmpty(text))
{
if (!pop3ResultData.HasUniqueId(num))
{
pop3ResultData.SetUniqueId(num, text);
}
else
{
if (list == null)
{
list = new List <int>();
}
list.Add(num);
}
}
}
}
if (list != null)
{
foreach (int id in list)
{
pop3ResultData.SetUniqueId(id, null);
}
}
return(null);
}
internal Exception TryParseLISTResponse(Pop3ResultData pop3ResultData)
{
if (this.listings == null || this.listings.Count != pop3ResultData.EmailDropCount)
{
return(new FormatException("'scan listing' must match the number of emails."));
}
pop3ResultData.AllocateEmailSizes();
for (int i = 0; i < this.listings.Count; i++)
{
string[] array = this.listings[i].Split(Pop3Response.wordDelimiters, StringSplitOptions.RemoveEmptyEntries);
if (array.Length < 2)
{
return(new FormatException("'scan listing' must have at least 2 words"));
}
int num;
if (!int.TryParse(array[0], NumberStyles.Integer, CultureInfo.InvariantCulture, out num))
{
return(new FormatException("'id' must be a number."));
}
long num2;
if (!long.TryParse(array[1], NumberStyles.Integer, CultureInfo.InvariantCulture, out num2))
{
return(new FormatException("'size' must be a number."));
}
if (num <= 0)
{
return(new FormatException("'id' must be greater than zero."));
}
if (num2 < 0L)
{
return(new FormatException("'size' must be non-negative."));
}
if (num <= pop3ResultData.EmailDropCount)
{
pop3ResultData.SetEmailSize(num, num2);
}
}
return(null);
}
private static bool SupportsMirroredSubscription(Pop3ResultData result)
{
return(result.RetentionDays == null || !(result.RetentionDays != int.MaxValue));
}
private static bool SupportsLeaveOnServer(Pop3ResultData result)
{
return(result.UidlCommandSupported && (result.RetentionDays == null || result.RetentionDays.Value > 0));
}