Esempio n. 1
0
        public static string[] GetMXRecords(string domain)
        {
            IntPtr   ptr1 = IntPtr.Zero;
            IntPtr   ptr2 = IntPtr.Zero;
            MXRecord recMx;

            if (Environment.OSVersion.Platform != PlatformID.Win32NT)
            {
                throw new NotSupportedException();
            }
            ArrayList list1 = new ArrayList();
            int       num1  = MxLookupHandler.DnsQuery(ref domain, QueryTypes.DNS_TYPE_MX, QueryOptions.DNS_QUERY_BYPASS_CACHE, 0, ref ptr1, 0);

            if (num1 != 0)
            {
                throw new Win32Exception(num1);
            }
            for (ptr2 = ptr1; !ptr2.Equals(IntPtr.Zero); ptr2 = recMx.pNext)
            {
                recMx = (MXRecord)Marshal.PtrToStructure(ptr2, typeof(MXRecord));
                if (recMx.wType == 15)
                {
                    string text1 = Marshal.PtrToStringAuto(recMx.pNameExchange);
                    list1.Add(text1);
                }
            }
            MxLookupHandler.DnsRecordListFree(ptr2, 0);
            return((string[])list1.ToArray(typeof(string)));
        }
        private static MechanismResponse GetAutoconfigByDomain(string domain, RequestType requestType)
        {
            MechanismResponse returnVal = new MechanismResponse();

            if (!string.IsNullOrEmpty(domain))
            {
                List <Mechanism> mechanisms = GetMechanisms();

                switch (requestType)
                {
                case RequestType.Standard:
                    returnVal = AttemptAll(mechanisms, domain);
                    break;

                case RequestType.MxLookup:
                    bool     found     = false;
                    string[] mxRecords = MxLookupHandler.GetMXRecordsTrimDistinct(domain);

                    if (mxRecords != null && mxRecords.Length > 0)
                    {
                        foreach (string mx in mxRecords)
                        {
                            returnVal = AttemptAll(mechanisms, mx);
                            found     = returnVal != null && returnVal.IsSuccess;
                            if (found)
                            {
                                break;
                            }
                        }

                        if (!found)     //Guess from the mx record
                        {
                            foreach (string mx in mxRecords)
                            {
                                returnVal = MxGuessHandler.GuessConfig(mx);
                                found     = returnVal != null && returnVal.IsSuccess;
                                if (found)
                                {
                                    break;
                                }
                            }
                        }
                    }
                    break;

                case RequestType.Guess:
                    returnVal = MxGuessHandler.GuessConfig(domain);
                    break;
                }
            }

            if (returnVal != null)
            {
                returnVal.RequestType = requestType;
            }

            return(returnVal);
        }