idsnmp.pas

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  Self.ID:=StrToIntDef(ASNItem(Pos,buffer,vt),0);
  Self.ErrorStatus:=StrToIntDef(ASNItem(Pos,buffer,vt),0);
  Self.ErrorIndex:=StrToIntDef(ASNItem(Pos,buffer,vt),0);
  ASNItem(Pos,buffer,vt);
  while Pos<Endpos do           // Decode MIB/Value pairs
    begin
      ASNItem(Pos,buffer,vt);
      Sm:=ASNItem(Pos,buffer,vt);
      Sv:=ASNItem(Pos,buffer,vt);

      MIBadd(sm,sv, vt);
    end;
end;

(*----------------------------------------------------------------------------*
 | function TSNMPInfo.EncodeBuf                                               |
 |                                                                            |
 | Encode the details into an ASN string                                      |
 |                                                                            |
 | The function returns the encoded ASN string                                |
 *----------------------------------------------------------------------------*)
function TSNMPInfo.EncodeBuf:string;
var
  data,s:string;
  n:integer;
  objType:Integer;
begin
  data:='';    {Do not Localize}
  SyncMIB;
  for n:=0 to Self.MIBOID.Count-1 do
    begin
      objType := Integer (Self.MIBValue.Objects[n]);
      if objType = 0 then
        objType := ASN1_OCTSTR;

      case objType of
        ASN1_INT:
          s := ASNObject(MibToID(Self.MIBOID[n]), ASN1_OBJID) +
            ASNObject(ASNEncInt(StrToIntDef(Self.MIBValue[n], 0)), objType);
        ASN1_COUNTER, ASN1_GAUGE, ASN1_TIMETICKS:
          s := ASNObject(MibToID(Self.MIBOID[n]), ASN1_OBJID) +
            ASNObject(ASNEncUInt(StrToIntDef(Self.MIBValue[n], 0)), objType);
        ASN1_OBJID:
          s := ASNObject(MibToID(Self.MIBOID[n]), ASN1_OBJID) +
            ASNObject(MibToID(Self.MIBValue[n]), objType);
        ASN1_IPADDR:
          s := ASNObject(MibToID(Self.MIBOID[n]), ASN1_OBJID) +
            ASNObject(IPToID(Self.MIBValue[n]), objType);
        ASN1_NULL:
          s := ASNObject(MibToID(Self.MIBOID[n]), ASN1_OBJID) +
            ASNObject('', ASN1_NULL);    {Do not Localize}
        else
          s := ASNObject(MibToID(Self.MIBOID[n]), ASN1_OBJID) +
            ASNObject(Self.MIBValue[n], objType);
      end;
      data:=data+ASNObject(s,$30);
    end;
  data:=ASNObject(data,$30);
  data:=ASNObject(char(Self.ID),2)+ASNObject(char(Self.ErrorStatus),2)
         +ASNObject(char(Self.ErrorIndex),2)+data;
  data:=ASNObject(char(Self.Version),2)+ASNObject(Self.community,4)+ASNObject(data,Self.PDUType);
  data:=ASNObject(data,$30);
  Result:=data;
end;

(*----------------------------------------------------------------------------*
 | procedure TSNMPInfo.Clear                                                  |
 |                                                                            |
 | Clear the header info and  MIBOID/Value lists.                             |
 *----------------------------------------------------------------------------*)
procedure TSNMPInfo.Clear;
begin
  version:=0;
  fCommunity:=Owner.Community;
  if Self = fOwner.Trap then
    Port := Owner.TrapPort
  else
    Port := Owner.Port;
  Host := Owner.Host;
  PDUType:=0;
  ID:=0;
  ErrorStatus:=0;
  ErrorIndex:=0;
  MIBOID.Clear;
  MIBValue.Clear;
end;

(*----------------------------------------------------------------------------*
 | procedure TSNMPInfo.MIBAdd                                                 |
 |                                                                            |
 | Add a MIBOID/Value pair                                                    |
 |                                                                            |
 | Parameters:                                                                |
 |  MIB  : string               The MIBOID to add                             |
 |  Value : string              The Value                                     |
 |  valueType : Integer         The Value's type.  Optional - defaults to     |    {Do not Localize}
 |                              ASN1_OCTSTR                                   |
 *----------------------------------------------------------------------------*)
procedure TSNMPInfo.MIBAdd(MIB,Value:string; valueType : Integer);
var
  x:integer;
begin
  SyncMIB;
  MIBOID.Add (MIB);
  x:=MIBOID.Count;
  if MIBValue.Count>x then
  begin
    MIBvalue[x-1]:=Value;
    MibValue.Objects [x-1] := TObject (valueType)
  end
  else MIBValue.AddObject(Value, TObject (valueType));
end;

(*----------------------------------------------------------------------------*
 | procedure TSNMPInfo.MIBDelete                                              |
 |                                                                            |
 | Delete a MIBOID/Value pair                                                 |
 |                                                                            |
 | Parameters:                                                                |
 |   Index:integer                      The index of the pair to delete       |
 *----------------------------------------------------------------------------*)
procedure TSNMPInfo.MIBDelete(Index:integer);
begin
  SyncMIB;
  MIBOID.Delete(Index);
  if (MIBValue.Count-1)>= Index then MIBValue.Delete(Index);
end;

(*----------------------------------------------------------------------------*
 | function TSNMPInfo.MIBGet                                                  |
 |                                                                            |
 | Get a string representation of tha value of the specified MIBOID           |
 |                                                                            |
 | Parameters:                                                                |
 |   MIB:string                         The MIBOID to query                   |
 |                                                                            |
 | The function returns the string representation of the value.               |
 *----------------------------------------------------------------------------*)
function TSNMPInfo.MIBGet(MIB:string):string;
var
  x:integer;
begin
  SyncMIB;
  x:=MIBOID.IndexOf(MIB);
  if x<0 then Result:=''    {Do not Localize}
    else Result:=MIBValue[x];
end;

{======================= TRAPS =====================================}

(*----------------------------------------------------------------------------*
 | procedure TSNMPInfo.EncodeTrap                                             |
 |                                                                            |
 | Encode the trap details into an ASN string - the 'Buffer' member           |    {Do not Localize}
 |                                                                            |
 | The function returns 1 for historical reasons!                             |
 *----------------------------------------------------------------------------*)
function TSNMPInfo.EncodeTrap: integer;
var
  s: string;
  n: integer;
begin
  Buffer := '';    {Do not Localize}
  for n:=0 to MIBOID.Count-1 do
    begin
      s := ASNObject(MibToID(MIBOID[n]), ASN1_OBJID)
        + ASNObject(MIBValue[n], ASN1_OCTSTR);
      Buffer := Buffer + ASNObject(s, ASN1_SEQ);
    end;
  Buffer := ASNObject(Buffer, ASN1_SEQ);
  Buffer := ASNObject(ASNEncInt(GenTrap), ASN1_INT)
    + ASNObject(ASNEncInt(SpecTrap), ASN1_INT)
    + ASNObject(ASNEncInt(TimeTicks), ASN1_TIMETICKS) + Buffer;
  Buffer := ASNObject(MibToID(Enterprise), ASN1_OBJID)
    + ASNObject(IPToID(Host), ASN1_IPADDR) + Buffer;
  Buffer := ASNObject(Char(Version), ASN1_INT)
    + ASNObject(Community, ASN1_OCTSTR) + ASNObject(Buffer, Self.PDUType);
  Buffer := ASNObject(Buffer, ASN1_SEQ);
  Result := 1;
end;

(*----------------------------------------------------------------------------*
 | procedure TSNMPInfo.DecodeTrap                                             |
 |                                                                            |
 | Decode the 'Buffer' trap string to fil in our member variables.            |    {Do not Localize}
 |                                                                            |
 | The function returns 1.                                                    |
 *----------------------------------------------------------------------------*)
function TSNMPInfo.DecodeTrap: integer;
var
  Pos, EndPos, vt: integer;
  Sm, Sv: string;
begin
  Pos := 2;
  EndPos := ASNDecLen(Pos, Buffer);
  Version := StrToIntDef(ASNItem(Pos, Buffer,vt), 0);
  Community := ASNItem(Pos, Buffer,vt);
  PDUType := StrToIntDef(ASNItem(Pos, Buffer,vt), PDUTRAP);
  Enterprise := IdToMIB(ASNItem(Pos, Buffer,vt));
  Host := ASNItem(Pos, Buffer,vt);
  GenTrap := StrToIntDef(ASNItem(Pos, Buffer,vt), 0);
  Spectrap := StrToIntDef(ASNItem(Pos, Buffer,vt), 0);
  TimeTicks := StrToIntDef(ASNItem(Pos, Buffer,vt), 0);
  ASNItem(Pos, Buffer,vt);
  while (Pos < EndPos) do
    begin
      ASNItem(Pos, Buffer,vt);
      Sm := ASNItem(Pos, Buffer,vt);
      Sv := ASNItem(Pos, Buffer,vt);
      MIBAdd(Sm, Sv, vt);
    end;
  Result := 1;
end;

(*----------------------------------------------------------------------------*
 | TSNMPInfo.SetCommunity                                                     |
 |                                                                            |
 | Set the community.                                                         |
 |                                                                            |
 | Parameters:                                                                |
 |   const Value: string        The new community value                       |
 *----------------------------------------------------------------------------*)
procedure TSNMPInfo.SetCommunity(const Value: string);
begin
  if Community <> Value then
  begin
    Clear;
    fCommunity := Value
  end
end;

{ TIdSNMP }

{==============================  IdSNMP OBJECT ================================}


(*----------------------------------------------------------------------------*
 | constructor TIdSNMP.Create                                                 |
 |                                                                            |
 | Contructor for TIdSNMP component                                           |
 |                                                                            |
 | Parameters:                                                                |