[457] | 1 | using System.Collections.Generic;
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| 2 |
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| 3 | namespace Lextm.SharpSnmpLib.Mib.Elements.Types
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| 4 | {
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| 5 | /**
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| 6 | * As this type is used for Counter32 and TimeTicks as well as Unsigned32
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| 7 | * and Gauge32 it incorrectly allows range restrictions of Counter32 and
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| 8 | * TimeTicks. This is ok as currently we do not care about detecting
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| 9 | * incorrect MIBs and this doesn't block the decoding of correct MIBs.
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| 10 | */
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| 11 | public class UnsignedType : BaseType
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| 12 | {
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| 13 | public enum Types
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| 14 | {
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| 15 | Unsigned32,
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| 16 | Gauge32,
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| 17 | Counter32,
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| 18 | TimeTicks,
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| 19 | Counter64,
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| 20 | }
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| 21 |
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| 22 | private Types _type;
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| 23 | private ValueRanges _ranges;
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| 24 |
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| 25 | public UnsignedType(IModule module, string name, Symbol type, ISymbolEnumerator symbols)
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| 26 | : base(module, name)
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| 27 | {
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| 28 | Types? t = GetExactType(type);
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| 29 | type.Assert(t.HasValue, "Unknown symbol for unsigned type!");
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| 30 | _type = t.Value;
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| 31 |
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| 32 | Symbol current = symbols.NextNonEOLSymbol();
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| 33 | if (current == Symbol.OpenParentheses)
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| 34 | {
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| 35 | current.Assert((_type != Types.Counter64), "Ranges are not supported for Counter64 type!"); // our internal struct can only hold int64 values
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| 36 |
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| 37 | symbols.PutBack(current);
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| 38 | _ranges = Lexer.DecodeRanges(symbols);
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| 39 | current.Assert(!_ranges.IsSizeDeclaration, "SIZE keyword is not allowed for ranges of unsigned types!");
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| 40 | }
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| 41 | else
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| 42 | {
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| 43 | symbols.PutBack(current);
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| 44 | }
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| 45 | }
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| 46 |
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| 47 | public Types Type
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| 48 | {
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| 49 | get { return _type; }
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| 50 | }
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| 51 |
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| 52 | public ValueRanges Ranges
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| 53 | {
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| 54 | get { return _ranges; }
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| 55 | }
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| 56 |
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| 57 | internal static Types? GetExactType(Symbol symbol)
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| 58 | {
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| 59 | if (symbol == Symbol.Unsigned32)
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| 60 | {
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| 61 | // [APPLICATION 2] IMPLICIT INTEGER (0..4294967295) // from SNMPv2-SMI
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| 62 | return Types.Unsigned32;
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| 63 | }
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| 64 | else if (symbol == Symbol.Gauge32)
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| 65 | {
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| 66 | // [APPLICATION 2] IMPLICIT INTEGER (0..4294967295) // from SNMPv2-SMI
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| 67 | return Types.Gauge32;
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| 68 | }
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| 69 | else if (symbol == Symbol.Counter32)
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| 70 | {
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| 71 | // [APPLICATION 1] IMPLICIT INTEGER (0..4294967295) // from SNMPv2-SMI
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| 72 | return Types.Counter32;
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| 73 | }
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| 74 | else if (symbol == Symbol.TimeTicks)
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| 75 | {
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| 76 | // [APPLICATION 3] IMPLICIT INTEGER (0..4294967295) // from SNMPv2-SMI + RFC1155-SMI
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| 77 | return Types.TimeTicks;
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| 78 | }
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| 79 | else if (symbol == Symbol.Gauge)
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| 80 | {
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| 81 | // [APPLICATION 2] IMPLICIT INTEGER (0..4294967295) // from RFC1155-SMI
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| 82 | return Types.Gauge32;
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| 83 | }
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| 84 | else if (symbol == Symbol.Counter)
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| 85 | {
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| 86 | // [APPLICATION 1] IMPLICIT INTEGER (0..4294967295) // from RFC1155-SMI
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| 87 | return Types.Counter32;
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| 88 | }
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| 89 | else if (symbol == Symbol.Counter64)
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| 90 | {
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| 91 | // [APPLICATION 6] IMPLICIT INTEGER (0..18446744073709551615) // from SNMPv2-SMI
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| 92 | return Types.Counter64;
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| 93 | }
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| 94 |
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| 95 | return null;
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| 96 | }
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| 97 |
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| 98 | internal static bool IsUnsignedType(Symbol symbol)
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| 99 | {
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| 100 | return GetExactType(symbol).HasValue;
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| 101 | }
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| 102 | }
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| 103 | }
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