private static void GetValue(GXByteBuffer bb, IList <object> objects, GXAsn1Settings s)
{
int len;
short type;
IList <object> tmp;
byte[] tmp2;
type = bb.GetUInt8();
len = GXCommon.GetObjectCount(bb);
if (len > bb.Available)
{
throw new OutOfMemoryException("GXAsn1Converter.GetValue");
}
int connectPos = 0;
if (s != null)
{
connectPos = s.XmlLength;
}
int start = bb.Position;
string tagString = null;
if (s != null)
{
s.AppendSpaces();
if (type == (byte)BerType.Integer)
{
if (len == 1 || len == 2 || len == 4 || len == 8)
{
tagString = s.GetTag((short)-len);
}
else
{
tagString = s.GetTag((byte)BerType.Integer);
}
}
else
{
tagString = s.GetTag(type);
}
s.Append("<" + tagString + ">");
}
switch (type)
{
case (byte)(BerType.Constructed | BerType.Context):
case ((byte)(BerType.Constructed | BerType.Context) | 1):
case ((byte)(BerType.Constructed | BerType.Context) | 2):
case ((byte)(BerType.Constructed | BerType.Context) | 3):
case ((byte)(BerType.Constructed | BerType.Context) | 4):
if (s != null)
{
s.Increase();
}
tmp = new GXAsn1Context()
{
Index = type & 0xF
};
objects.Add(tmp);
while (bb.Position < start + len)
{
GetValue(bb, tmp, s);
}
if (s != null)
{
s.Decrease();
}
break;
case (byte)(BerType.Constructed | BerType.Sequence):
if (s != null)
{
s.Increase();
}
tmp = new GXAsn1Sequence();
objects.Add(tmp);
int cnt = 0;
while (bb.Position < start + len)
{
++cnt;
GetValue(bb, tmp, s);
}
if (s != null)
{
// Append comment.
s.AppendComment(connectPos, Convert.ToString(cnt) + " elements.");
s.Decrease();
}
break;
case (byte)(BerType.Constructed | BerType.Set):
if (s != null)
{
s.Increase();
}
tmp = new List <object>();
GetValue(bb, tmp, s);
if (tmp[0] is GXAsn1Sequence)
{
tmp = (GXAsn1Sequence)tmp[0];
objects.Add(new KeyValuePair <object, object>(tmp[0], tmp[1]));
}
else
{
KeyValuePair <object, object> e = new KeyValuePair <object, object>(tmp, null);
objects.Add(e);
}
if (s != null)
{
s.Decrease();
}
break;
case (byte)BerType.ObjectIdentifier:
GXAsn1ObjectIdentifier oi = new GXAsn1ObjectIdentifier(bb, len);
objects.Add(oi);
if (s != null)
{
string str = oi.Description;
if (str != null)
{
s.AppendComment(connectPos, str);
}
s.Append(oi.ToString());
}
break;
case (byte)BerType.PrintableString:
objects.Add(bb.GetString(len));
if (s != null)
{
s.Append(Convert.ToString(objects[objects.Count - 1]));
}
break;
case (byte)BerType.Utf8StringTag:
objects.Add(new GXAsn1Utf8String(bb.GetString(bb.Position, len)));
bb.Position = bb.Position + len;
if (s != null)
{
s.Append(Convert.ToString(objects[objects.Count - 1]));
}
break;
case (byte)BerType.Ia5String:
objects.Add(new GXAsn1Ia5String(bb.GetString(len)));
if (s != null)
{
s.Append(Convert.ToString(objects[objects.Count - 1]));
}
break;
case (byte)BerType.Integer:
if (len == 1)
{
objects.Add(bb.GetInt8());
}
else if (len == 2)
{
objects.Add(bb.GetInt16());
}
else if (len == 4)
{
objects.Add(bb.GetInt32());
}
else
{
tmp2 = new byte[len];
bb.Get(tmp2);
objects.Add(new GXAsn1Integer(tmp2));
}
if (s != null)
{
s.Append(Convert.ToString(objects[objects.Count - 1]));
}
break;
case (byte)BerType.Null:
objects.Add(null);
break;
case (byte)BerType.BitString:
GXAsn1BitString tmp3 = new GXAsn1BitString(bb.SubArray(bb.Position, len));
objects.Add(tmp3);
bb.Position = bb.Position + len;
if (s != null)
{
// Append comment.
s.AppendComment(connectPos, Convert.ToString(tmp3.Length) + " bit.");
s.Append(tmp3.asString());
}
break;
case (byte)BerType.UtcTime:
tmp2 = new byte[len];
bb.Get(tmp2);
objects.Add(GetUtcTime(ASCIIEncoding.ASCII.GetString(tmp2)));
if (s != null)
{
s.Append(((DateTimeOffset)objects[objects.Count - 1]).UtcDateTime.ToString("yyyy-MM-dd HH:mm", CultureInfo.InvariantCulture));
}
break;
case (byte)BerType.GeneralizedTime:
tmp2 = new byte[len];
bb.Get(tmp2);
objects.Add(GXCommon.GetGeneralizedTime(ASCIIEncoding.ASCII.GetString(tmp2)));
if (s != null)
{
s.Append(Convert.ToString(objects[objects.Count - 1]));
}
break;
case (byte)BerType.Context:
case (byte)BerType.Context | 1:
case (byte)BerType.Context | 2:
case (byte)BerType.Context | 3:
tmp = new GXAsn1Context()
{
Constructed = false, Index = type & 0xF
};
tmp2 = new byte[len];
bb.Get(tmp2);
tmp.Add(tmp2);
objects.Add(tmp);
if (s != null)
{
s.Append(GXCommon.ToHex(tmp2, false));
}
break;
case (byte)BerType.OctetString:
int t = bb.GetUInt8(bb.Position);
switch (t)
{
case (byte)(BerType.Constructed | BerType.Sequence):
case (byte)BerType.BitString:
if (s != null)
{
s.Increase();
}
GetValue(bb, objects, s);
if (s != null)
{
s.Decrease();
}
break;
default:
tmp2 = new byte[len];
bb.Get(tmp2);
objects.Add(tmp2);
if (s != null)
{
s.Append(GXCommon.ToHex(tmp2, false));
}
break;
}
break;
case (byte)BerType.Boolean:
bool b = bb.GetUInt8() != 0;
objects.Add(b);
if (s != null)
{
s.Append(Convert.ToString(b));
}
break;
default:
throw new System.ArgumentException("Invalid type: " + type);
}
if (s != null)
{
s.Append("</" + tagString + ">\r\n");
}
}
///<summary>
///Get Int16 value from DLMS data.
///</summary>
///<param name="buff">
///Received DLMS data.
///</param>
///<param name="info">
///Data info.
///</param>
///<returns>
///Parsed Int16 value.
///</returns>
private static object GetInt16(GXByteBuffer buff, GXDataInfo info)
{
// If there is not enough data available.
if (buff.Size - buff.Position < 2)
{
info.Complete = false;
return null;
}
Int16 value = buff.GetInt16();
if (info.xml != null)
{
info.xml.AppendLine(info.xml.GetDataType(info.Type), "Value", info.xml.IntegerToHex(value, 4));
}
return value;
}
///<summary>
///Get date and time from DLMS data.
///</summary>
///<param name="settings">DLMS settings.</param>
///<param name="buff">Received DLMS data.</param>
///<param name="info">Data info.</param>
///<returns>
///Parsed date and time.
///</returns>
private static object GetDateTime(GXDLMSSettings settings, GXByteBuffer buff, GXDataInfo info)
{
// If there is not enough data available.
if (buff.Size - buff.Position < 12)
{
//If time.
if (buff.Size - buff.Position < 5)
{
return GetTime(buff, info);
}
//If date.
else if (buff.Size - buff.Position < 6)
{
return GetDate(buff, info);
}
info.Complete = false;
return null;
}
if (info.xml != null)
{
info.xml.AppendLine(info.xml.GetDataType(info.Type), "Value", GXCommon.ToHex(buff.Data, false, buff.Position, 12));
}
GXDateTime dt = new GXDateTime();
//Get year.
int year = buff.GetUInt16();
if (year == 0xFFFF || year == 0)
{
year = DateTime.Now.Year;
dt.Skip |= DateTimeSkips.Year;
}
//Get month
int month = buff.GetUInt8();
if (month == 0 || month == 0xFF || month == 0xFE || month == 0xFD)
{
month = 1;
dt.Skip |= DateTimeSkips.Month;
}
int day = buff.GetUInt8();
if (day < 1 || day == 0xFF)
{
day = 1;
dt.Skip |= DateTimeSkips.Day;
}
else if (day == 0xFD || day == 0xFE)
{
day = DateTime.DaysInMonth(year, month) + (sbyte)day + 2;
}
//Skip week day
if (buff.GetUInt8() == 0xFF)
{
dt.Skip |= DateTimeSkips.DayOfWeek;
}
//Get time.
int hours = buff.GetUInt8();
if (hours == 0xFF)
{
hours = 0;
dt.Skip |= DateTimeSkips.Hour;
}
int minutes = buff.GetUInt8();
if (minutes == 0xFF)
{
minutes = 0;
dt.Skip |= DateTimeSkips.Minute;
}
int seconds = buff.GetUInt8();
if (seconds == 0xFF)
{
seconds = 0;
dt.Skip |= DateTimeSkips.Second;
}
int milliseconds = buff.GetUInt8();
if (milliseconds != 0xFF)
{
milliseconds *= 10;
}
else
{
milliseconds = 0;
dt.Skip |= DateTimeSkips.Ms;
}
int deviation = buff.GetInt16();
dt.Status = (ClockStatus)buff.GetUInt8();
if (settings != null && settings.UtcTimeZone)
{
deviation = -deviation;
}
dt.Deviation = deviation;
//0x8000 == -32768
//deviation = -1 if skipped.
if (deviation != -1 && deviation != -32768 && year != 1 && (dt.Skip & DateTimeSkips.Year) == 0)
{
dt.Value = new DateTimeOffset(new DateTime(year, month, day, hours, minutes, seconds, milliseconds),
new TimeSpan(0, -deviation, 0));
}
else //Use current time if deviation is not defined.
{
dt.Skip |= DateTimeSkips.Devitation;
DateTime tmp = new DateTime(year, month, day, hours, minutes, seconds, milliseconds, DateTimeKind.Local);
dt.Value = new DateTimeOffset(tmp, TimeZoneInfo.Local.GetUtcOffset(tmp));
}
return dt;
}
/// <returns>
/// Get integer value as short.
/// </returns>
public short ToShort()
{
GXByteBuffer bb = new GXByteBuffer(Value);
return(bb.GetInt16());
}