/// <summary>
/// Decodes an address out of a PDU string.
/// </summary>
/// <param name="pdu">The PDU string to use.</param>
/// <param name="index">The index where to start in the string.</param>
/// <param name="address">The address (phone number) read.</param>
/// <param name="addressType">The address type of the read address.</param>
public static void DecodeGeneralAddress(string pdu, ref int index, out string address, out byte addressType)
{
int num;
int num1 = index;
int num2 = num1;
index = num1 + 1;
byte num3 = BcdWorker.GetByte(pdu, num2);
int num4 = index;
int num5 = num4;
index = num4 + 1;
addressType = BcdWorker.GetByte(pdu, num5);
if (num3 <= 0)
{
address = string.Empty;
return;
}
else
{
bool flag = false;
if (num3 % 2 != 0)
{
num = num3 + 1;
}
else
{
num = (int)num3;
}
int length = num / 2;
if (index * 2 + length * 2 > pdu.Length - length * 2)
{
length = (pdu.Length - index * 2) / 2;
flag = true;
}
AddressType addressType1 = new AddressType(addressType);
if (addressType1.Ton != 5)
{
string bytesString = BcdWorker.GetBytesString(pdu, index, length);
index = index + length;
if (flag)
{
address = BcdWorker.DecodeSemiOctets(bytesString).Substring(0, length * 2);
return;
}
else
{
address = BcdWorker.DecodeSemiOctets(bytesString).Substring(0, num3);
return;
}
}
else
{
byte[] bytes = BcdWorker.GetBytes(pdu, index, length);
index = index + length;
address = PduPartsEx.Decode7BitText(bytes);
return;
}
}
}
/// <summary>
/// Gets the user data out of the string.
/// </summary>
/// <param name="pdu">The PDU string to use.</param>
/// <param name="index">The index where to start in the string.</param>
/// <param name="dcs">The coding that was used to encode the data. Required to determine the proper data length.</param>
/// <param name="userDataLength">Receives the user data length in bytes.</param>
/// <param name="userData">Received the user data.</param>
/// <remarks>
/// <para>If there's no data, userDataLength will be set to 0 and userData to null.</para>
/// <para>The decoded data might require further processing, for example 7-bit data (septets) packed
/// into octets, that must be converted back to septets before the data can be used.</para>
/// <para>Processing will stop at the first character that is not hex encountered or if the
/// string ends too early. It will not change the <b>userDataLength</b> read from the string.</para>
/// </remarks>
public static void DecodeUserData(string pdu, ref int index, byte dcs, out byte userDataLength, out byte[] userData)
{
int num = index;
int num1 = num;
index = num + 1;
byte num2 = BcdWorker.GetByte(pdu, num1);
if (num2 <= 0)
{
userDataLength = 0;
userData = new byte[0];
return;
}
else
{
int remainingUserDataBytes = PduPartsEx.GetRemainingUserDataBytes(num2, dcs);
int num3 = BcdWorker.CountBytes(pdu) - index;
if (num3 < remainingUserDataBytes)
{
remainingUserDataBytes = num3;
}
string bytesString = BcdWorker.GetBytesString(pdu, index, remainingUserDataBytes);
index = index + remainingUserDataBytes;
string empty = string.Empty;
for (int i = 0; i < bytesString.Length / 2; i++)
{
string byteString = BcdWorker.GetByteString(bytesString, i);
if (!Calc.IsHexString(byteString))
{
break;
}
empty = string.Concat(empty, byteString);
}
userDataLength = num2;
userData = Calc.HexToInt(empty);
return;
}
}
/// <summary>
/// Decodes text from user data in the specified data coding scheme.
/// </summary>
/// <param name="userData">The user data to decode. Must contain text according to the specified data coding scheme.</param>
/// <param name="dataCodingScheme">The data coding scheme specified in the PDU.</param>
/// <returns>The decoded user data.</returns>
public static string DecodeText(byte[] userData, byte dataCodingScheme)
{
string str;
byte alphabet = DataCodingScheme.Decode(dataCodingScheme).Alphabet;
byte num = alphabet;
switch (num)
{
case 0:
{
str = PduPartsEx.Decode7BitText(userData);
break;
}
case 1:
{
//Label0:
str = PduPartsEx.Decode7BitText(userData);
break;
}
case 2:
{
str = PduPartsEx.DecodeUcs2Text(userData);
break;
}
default:
{
//goto Label0;
str = PduPartsEx.Decode7BitText(userData);
break;
}
}
return(str);
}
/// <summary>
/// Initializes a new instance of the <see cref="T:GsmComm.PduConverter.SmsStatusReportPdu" /> class
/// using the specified PDU string.
/// </summary>
/// <param name="pdu">The PDU string to convert.</param>
/// <param name="includesSmscData">Specifies if the string contains
/// SMSC data octets at the beginning.</param>
/// <param name="actualLength">Specifies the actual PDU length, that is the length in bytes without
/// the SMSC header. Set to -1 if unknown.</param>
/// <remarks>
/// <para>This constructor assumes that the string contains an <b>SMS-STATUS-REPORT</b>
/// PDU data stream as specified
/// by GSM 07.05.</para>
/// </remarks>
public SmsStatusReportPduEx(string pdu, bool includesSmscData, int actualLength)
{
string str = null;
byte num = 0;
ParameterIndicator parameterIndicator;
byte num1 = 0;
byte[] numArray = null;
if (pdu != string.Empty)
{
bool flag = actualLength >= 0;
int num2 = actualLength;
if (!flag || num2 > 0)
{
int num3 = 0;
if (includesSmscData)
{
PduPartsEx.DecodeSmscAddress(pdu, ref num3, out str, out num);
base.SetSmscAddress(str, num);
}
int num4 = num3;
num3 = num4 + 1;
this.messageFlags = new SmsStatusReportMessageFlags(BcdWorker.GetByte(pdu, num4));
if (flag)
{
num2--;
if (num2 <= 0)
{
base.ConstructLength = num3 * 2;
return;
}
}
int num5 = num3;
num3 = num5 + 1;
this.messageReference = BcdWorker.GetByte(pdu, num5);
PduPartsEx.DecodeGeneralAddress(pdu, ref num3, out this.recipientAddress, out this.recipientAddressType);
if (num3 * 2 < pdu.Length)
{
try { this.scTimestamp = new SmsTimestampEx(pdu, ref num3); } catch { this.SCTimestamp = SmsTimestampEx.None; }
try { this.dischargeTime = new SmsTimestampEx(pdu, ref num3); } catch { this.dischargeTime = SmsTimestampEx.None; }
int num6 = num3;
num3 = num6 + 1;
this.status = BcdWorker.GetByte(pdu, num6);
int num7 = BcdWorker.CountBytes(pdu);
if (num3 < num7)
{
int num8 = num3;
num3 = num8 + 1;
this.parameterIndicator = new ParameterIndicator(BcdWorker.GetByte(pdu, num8));
if (this.parameterIndicator.Extension)
{
do
{
int num9 = BcdWorker.CountBytes(pdu);
if (num3 < num9)
{
int num10 = num3;
num3 = num10 + 1;
parameterIndicator = new ParameterIndicator(BcdWorker.GetByte(pdu, num10));
}
else
{
base.ConstructLength = num3 * 2;
return;
}
}while (parameterIndicator.Extension);
}
if (this.parameterIndicator.TP_PID)
{
int num11 = num3;
num3 = num11 + 1;
base.ProtocolID = BcdWorker.GetByte(pdu, num11);
}
if (this.parameterIndicator.TP_DCS)
{
int num12 = num3;
num3 = num12 + 1;
base.DataCodingScheme = BcdWorker.GetByte(pdu, num12);
}
if (this.parameterIndicator.TP_UDL)
{
PduPartsEx.DecodeUserData(pdu, ref num3, base.DataCodingScheme, out num1, out numArray);
base.SetUserData(numArray, num1);
}
base.ConstructLength = num3 * 2;
return;
}
else
{
base.ConstructLength = num3 * 2;
return;
}
}
else
{
base.ProtocolID = 145;
base.DataCodingScheme = 137;
this.SCTimestamp = SmsTimestampEx.None;
this.DischargeTime = SmsTimestampEx.None;
base.ConstructLength = num3 * 2;
return;
}
}
else
{
return;
}
}
else
{
throw new ArgumentException("pdu must not be an empty string.");
}
}
