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{
$Project$
$Workfile$
$Revision$
$DateUTC$
$Id$
This file is part of the Indy (Internet Direct) project, and is offered
under the dual-licensing agreement described on the Indy website.
(http://www.indyproject.org/)
Copyright:
(c) 1993-2005, Chad Z. Hower and the Indy Pit Crew. All rights reserved.
}
{
$Log$
}
{
Rev 1.1 6/29/04 12:51:10 PM RLebeau
Updatd SetupLanManagerPassword() to check the password length before
referencing the password data
Rev 1.0 11/13/2002 07:58:08 AM JPMugaas
S.G. 12/7/2002:
- Rewrote Type 1 and Type 2 structures to be closer to the
document referenced in the above URL. (Easier to read and check)
- Corrected falgs accouring to bug ID 577895 and own packet traces.
This was actually only an adjustment to the new data types when
I rewrote the header.
- Initialized structures to #0 before using.
}
{
Implementation of the NTLM authentication as specified in
http://www.innovation.ch/java/ntlm.html with some fixes
Author: Doychin Bondzhev (doychin@dsoft-bg.com)
Copyright: (c) Chad Z. Hower and The Winshoes Working Group.
}
unit IdNTLM;
interface
{$i IdCompilerDefines.inc}
uses
IdGlobal,
IdStruct;
type
{$IFDEF DOTNET}
ProtocolArray = array [1..8] of AnsiChar;
padArray2 = array[0..1] of Byte;
padArray3 = Array[0..2] of Byte;
padArray7 = Array[0..6] of Byte;
padArray8 = Array[0..7] of Byte;
nonceArray = Array[1..8] of Byte;
ntlm_base = class(TIdStruct)
protected
fprotocol : ProtocolArray;
function GetBytesLen: UInt32; override;
public
procedure ReadStruct(const ABytes : TIdBytes; var VIndex : UInt32); override;
procedure WriteStruct(var VBytes : TIdBytes; var VIndex : UInt32); override;
property protocol: ProtocolArray read fprotocol write fprotocol; // array [1..8] of Char; // 'N', 'T', 'L', 'M', 'S', 'S', 'P', '\0' {Do not Localize}
end;
type_1_message_header = class(ntlm_base)
protected
f_type : UInt8;
fpad : padArray3;
fflags : UInt16;
fpad2 : padArray2;
fdom_len1 : UInt16;
fdom_len2 : UInt16;
fdom_off : UInt32;
fhost_len1 : UInt16;
fhost_len2 : UInt16;
fhost_off : UInt32;
function GetBytesLen: UInt32; override;
public
procedure ReadStruct(const ABytes : TIdBytes; var VIndex : UInt32); override;
procedure WriteStruct(var VBytes : TIdBytes; var VIndex : UInt32); override;
property _type: UInt8 read f_type write f_type; // 0x01
property pad : padArray3 read fpad write fpad; // 0x0
property flags: UInt16 read fflags write fflags; // 0xb203
property pad2 : padArray2 read fpad2 write fpad2; // 0x0
property dom_len1: UInt16 read fdom_len1 write fdom_len1; // domain string length
property dom_len2: UInt16 read fdom_len2 write fdom_len2; // domain string length
property dom_off: UInt32 read fdom_off write fdom_off; // domain string offset
property host_len1: UInt16 read fhost_len1 write fhost_len1; // host string length
property host_len2: UInt16 read fhost_len2 write fhost_len2; // host string length
property host_off: UInt32 read fhost_off write fhost_off; // host string offset (always 0x20)
end;
type_2_message_header = class(ntlm_base)
protected
f_type : UInt8;
fPad: padArray3;
fhost_len1: UInt16;
fhost_len2: UInt16;
fhost_off: UInt32;
fflags: UInt16;
fPad2: padArray2;
fnonce: nonceArray;
freserved: padArray8;
finfo_len1: UInt16;
finfo_len2: UInt16;
finfo_off: UInt32;
function GetBytesLen: UInt32; override;
public
procedure ReadStruct(const ABytes : TIdBytes; var VIndex : UInt32); override;
procedure WriteStruct(var VBytes : TIdBytes; var VIndex : UInt32); override;
property _type: UInt8 read f_type write f_type; // $2
property pad: padArray3 read fPad wrie fPad;
property host_len1: UInt16 read fhost_len1 write fhost_len1;
property host_len2: UInt16 read fhost_len2 write fhost_len2;
property host_off: UInt32 read fhost_off write fhost_off;
property flags: UInt16 read fflags write fflags;
property pad2: padArray2 read fflags write fflags;
property nonce: nonceArray read fnonce write fnonce;
property reserved: padArray8 read freserved write freserved;
property info_len1: UInt16 read finfo_len1 write finfo_len1;
property info_len2: UInt16 read finfo_len2 write finfo_len2;
property info_off: UInt32 read finfo_off write finfo_off;
end;
type_3_message_header = class(ntlm_base)
protected
f_type: UInt32;
flm_resp_len1: UInt16;
flm_resp_len2: UInt16;
flm_resp_off : UInt32;
fnt_resp_len1: UInt16;
fnt_resp_len2: UInt16;
fnt_resp_off: UInt32;
fdom_len1: UInt16;
fdom_len2 : UInt16;
fdom_off : UInt32;
fuser_len1: UInt16;
fuser_len2: UInt16;
fuser_off: UInt32;
fhost_len1: UInt16;
fhost_len2: UInt16;
fhost_off: UInt32;
fkey_len1: UInt16;
fkey_len2: UInt16;
fkey_off: UInt32;
fflags: UInt32;
function GetBytesLen: UInt32; override;
public
procedure ReadStruct(const ABytes : TIdBytes; var VIndex : UInt32); override;
procedure WriteStruct(var VBytes : TIdBytes; var VIndex : UInt32); override;
property _type: UInt32 read f_type write f_type; // 0x03
property lm_resp_len1: UInt16 read flm_resp_len1 write flm_resp_len1; // LanManager response length (always 0x18)
property lm_resp_len2: UInt16 read flm_resp_len2 write flm_resp_len2; // LanManager response length (always 0x18)
property lm_resp_off: UInt32 read flm_resp_off write flm_resp_off; // LanManager response offset
property nt_resp_len1: UInt16 read fnt_resp_len1 write fnt_resp_len1; // NT response length (always 0x18)
property nt_resp_len2: UInt16 read fnt_resp_len2 write fnt_resp_len2; // NT response length (always 0x18)
property nt_resp_off: UInt32 read fnt_resp_off write fnt_resp_off; // NT response offset
property dom_len1: UInt16 read fdom_len1 write fdom_len1; // domain string length
property dom_len2: UInt16 read fdom_len2 write fdom_len2; // domain string length
property dom_off: UInt32 read fdom_off write fdom_off; // domain string offset (always 0x40)
property user_len1: UInt16 read fuser_len1 write fuser_len1; // username string length
property user_len2: UInt16 read fuser_len2 write fuser_len2; // username string length
property user_off: UInt32 read fuser_off write fuser_off; // username string offset
property host_len1: UInt16 read fhost_len1 write fhost_len1; // host string length
property host_len2: UInt16 read fhost_len2 write fhost_len2; // host string length
property host_off: UInt32 read fhost_off write fhost_off; // host string offset
property key_len1: UInt16 read fkey_len1 write fkey_len1; // session key length
property key_len2: UInt16 read fkey_len2 write fkey_len2; // session key length
property key_off: UInt32 read fkey_off write fkey_off; // session key offset
property flags: UInt32 read fflags write fflags; // 0xA0808205
end;
{$ELSE}
type_1_message_header = packed record
protocol: array [1..8] of UInt8; // 'N', 'T', 'L', 'M', 'S', 'S', 'P', '\0' {Do not Localize}
_type: UInt8; // 0x01
pad : packed Array[1..3] of UInt8; // 0x0
flags: UInt16; // 0xb203
pad2 : packed Array[1..2] of UInt8; // 0x0
dom_len1: UInt16; // domain string length
dom_len2: UInt16; // domain string length
dom_off: UInt32; // domain string offset
host_len1: UInt16; // host string length
host_len2: UInt16; // host string length
host_off: UInt32; // host string offset (always 0x20)
end;
type_2_message_header = packed record
protocol: packed array [1..8] of UInt8; // 'N', 'T', 'L', 'M', 'S', 'S', 'P', #0 {Do not Localize}
_type: UInt8; // $2
Pad: packed Array[1..3] of UInt8;
host_len1: UInt16;
host_len2: UInt16;
host_off: UInt32;
flags: UInt16;
Pad2: packed Array[1..2] of UInt8;
nonce: packed Array[1..8] of UInt8;
reserved: packed Array[1..8] of UInt8;
info_len1: UInt16;
info_len2: UInt16;
info_off: UInt32;
end;
type_3_message_header = packed record
protocol: array [1..8] of UInt8; // 'N', 'T', 'L', 'M', 'S', 'S', 'P', '\0' {Do not Localize}
_type: UInt32; // 0x03
lm_resp_len1: UInt16; // LanManager response length (always 0x18)
lm_resp_len2: UInt16; // LanManager response length (always 0x18)
lm_resp_off: UInt32; // LanManager response offset
nt_resp_len1: UInt16; // NT response length (always 0x18)
nt_resp_len2: UInt16; // NT response length (always 0x18)
nt_resp_off: UInt32; // NT response offset
dom_len1: UInt16; // domain string length
dom_len2: UInt16; // domain string length
dom_off: UInt32; // domain string offset (always 0x40)
user_len1: UInt16; // username string length
user_len2: UInt16; // username string length
user_off: UInt32; // username string offset
host_len1: UInt16; // host string length
host_len2: UInt16; // host string length
host_off: UInt32; // host string offset
key_len1: UInt16; // session key length
key_len2: UInt16; // session key length
key_off: UInt32; // session key offset
flags: UInt32; // 0xA0808205
end;
function BuildType1Message(const ADomain, AHost: String): String;
function BuildType3Message(const ADomain, AHost, AUsername: TIdUnicodeString; const APassword: String; const ANonce: TIdBytes): String;
{$ENDIF}
function NTLMFunctionsLoaded : Boolean;
procedure GetDomain(const AUserName : String; var VUserName, VDomain : String);
//IMPORTANT!!!
//
//NTLM is a funny protocol because it was designed for little endian machines.
//Some record values must be in little endian byte-orders.
const
// S.G. 12/7/2002: Changed the flag to $B207 (from BugID 577895 and packet trace)
//was $A000B207; //b203;
//JPM - note that this value has to be little endian. We precalculate
//this for big endian machines.
MSG1_FLAGS : UInt16 = $b207;
// S.G. 12/7/2002: was: flags := $A0808205; (from BugID 577895 and packet trace)
MSG3_FLAGS : UInt32 = $018205;
implementation
uses
{$IFDEF HAS_UNIT_AnsiStrings}
AnsiStrings,
{$ENDIF}
SysUtils,
{$IFDEF DOTNET}
System.Text,
{$ENDIF}
IdFIPS,
IdGlobalProtocols,
IdHash,
IdHashMessageDigest,
IdCoderMIME
{$IFNDEF DOTNET}, IdSSLOpenSSLHeaders{$ENDIF}
{$IFDEF HAS_GENERICS_TArray_Copy}
{$IFDEF HAS_UNIT_Generics_Collections}
, System.Generics.Collections
{$ENDIF}
{$ENDIF}
;
type
Pdes_key_schedule = ^des_key_schedule;
const
cProtocolStr: array[1..8] of Byte = (Ord('N'),Ord('T'),Ord('L'),Ord('M'),Ord('S'),Ord('S'),Ord('P'),$0); {Do not Localize}
procedure GetDomain(const AUserName : String; var VUserName, VDomain : String);
{$IFDEF USE_INLINE} inline; {$ENDIF}
var
i: Integer;
begin
i := Pos('\', AUsername);
if i > -1 then
begin
VDomain := Copy(AUsername, 1, i - 1);
VUserName := Copy(AUsername, i + 1, Length(AUserName));
end else
begin
VDomain := ' '; {do not localize}
VUserName := AUserName;
end;
end;
{$IFDEF DOTNET}
function NTLMFunctionsLoaded : Boolean;
{$IFDEF USE_INLINE} inline; {$ENDIF}
begin
Result := True;
end;
{$ELSE}
function NTLMFunctionsLoaded : Boolean;
begin
Result := IdSSLOpenSSLHeaders.Load;
if Result then begin
Result := Assigned(DES_set_odd_parity) and
Assigned(DES_set_key) and
Assigned(DES_ecb_encrypt);
end;
end;
{$ENDIF}
{$IFNDEF DOTNET}
{/*
* turns a 56 bit key into the 64 bit, odd parity key and sets the key.
* The key schedule ks is also set.
*/}
procedure setup_des_key(key_56: des_cblock; Var ks: des_key_schedule);
Var
key: des_cblock;
begin
key[0] := key_56[0];
key[1] := ((key_56[0] SHL 7) and $FF) or (key_56[1] SHR 1);
key[2] := ((key_56[1] SHL 6) and $FF) or (key_56[2] SHR 2);
key[3] := ((key_56[2] SHL 5) and $FF) or (key_56[3] SHR 3);
key[4] := ((key_56[3] SHL 4) and $FF) or (key_56[4] SHR 4);
key[5] := ((key_56[4] SHL 3) and $FF) or (key_56[5] SHR 5);
key[6] := ((key_56[5] SHL 2) and $FF) or (key_56[6] SHR 6);
key[7] := (key_56[6] SHL 1) and $FF;
DES_set_odd_parity(@key);
DES_set_key(@key, ks);
end;
{/*
* takes a 21 byte array and treats it as 3 56-bit DES keys. The
* 8 byte plaintext is encrypted with each key and the resulting 24
* bytes are stored in the results array.
*/}
procedure calc_resp(keys: PDES_cblock; const ANonce: TIdBytes; results: Pdes_key_schedule);
Var
ks: des_key_schedule;
nonce: des_cblock;
begin
setup_des_key(keys^, ks);
Move(ANonce[0], nonce, 8);
des_ecb_encrypt(@nonce, Pconst_DES_cblock(results), ks, DES_ENCRYPT);
setup_des_key(PDES_cblock(PtrUInt(keys) + 7)^, ks);
des_ecb_encrypt(@nonce, Pconst_DES_cblock(PtrUInt(results) + 8), ks, DES_ENCRYPT);
setup_des_key(PDES_cblock(PtrUInt(keys) + 14)^, ks);
des_ecb_encrypt(@nonce, Pconst_DES_cblock(PtrUInt(results) + 16), ks, DES_ENCRYPT);
end;
Const
Magic: des_cblock = ($4B, $47, $53, $21, $40, $23, $24, $25 );
//* setup LanManager password */
function SetupLanManagerPassword(const APassword: String; const ANonce: TIdBytes): TIdBytes;
var
lm_hpw: array[0..20] of Byte;
lm_pw: array[0..13] of Byte;
idx, len: Integer;
ks: des_key_schedule;
lm_resp: array [0..23] of Byte;
lPassword: {$IFDEF STRING_IS_UNICODE}TIdBytes{$ELSE}AnsiString{$ENDIF};
begin
{$IFDEF STRING_IS_UNICODE}
lPassword := IndyTextEncoding_OSDefault.GetBytes(UpperCase(APassword));
{$ELSE}
lPassword := UpperCase(APassword);
{$ENDIF}
len := IndyMin(Length(lPassword), 14);
if len > 0 then begin
Move(lPassword[{$IFDEF STRING_IS_UNICODE}0{$ELSE}1{$ENDIF}], lm_pw[0], len);
end;
if len < 14 then begin
for idx := len to 13 do begin
lm_pw[idx] := $0;
end;
end;
//* create LanManager hashed password */
setup_des_key(pdes_cblock(@lm_pw[0])^, ks);
des_ecb_encrypt(@magic, Pconst_DES_cblock(@lm_hpw[0]), ks, DES_ENCRYPT);
setup_des_key(pdes_cblock(PtrUInt(@lm_pw[0]) + 7)^, ks);
des_ecb_encrypt(@magic, Pconst_DES_cblock(PtrUInt(@lm_hpw[0]) + 8), ks, DES_ENCRYPT);
FillChar(lm_hpw[16], 5, 0);
calc_resp(PDes_cblock(@lm_hpw[0]), ANonce, Pdes_key_schedule(@lm_resp[0]));
SetLength(Result, SizeOf(lm_resp));
Move(lm_resp[0], Result[0], SizeOf(lm_resp));
end;
function BuildUnicode(const S: String): TIdBytes;
{$IFDEF STRING_IS_UNICODE}
{$IFDEF USE_INLINE}inline;{$ENDIF}
{$ELSE}
var
i: integer;
{$ENDIF}
begin
{$IFDEF STRING_IS_UNICODE}
Result := IndyTextEncoding_UTF16LE.GetBytes(S);
{$ELSE}
// RLebeau: TODO - should this use encUTF16LE as well? This logic will
// not produce a valid Unicode string if non-ASCII characters are present!
SetLength(Result, Length(S) * SizeOf(WideChar));
for i := 0 to Length(S)-1 do begin
Result[i*2] := Byte(S[i+1]);
Result[(i*2)+1] := Byte(#0);
end;
{$ENDIF}
end;
//* create NT hashed password */
function CreateNTPassword(const APassword: String; const ANonce: TIdBytes): TIdBytes;
var
nt_hpw: array [1..21] of Byte;
nt_hpw128: TIdBytes;
nt_resp: array [1..24] of Byte;
LMD4: TIdHashMessageDigest4;
begin
CheckMD4Permitted;
LMD4 := TIdHashMessageDigest4.Create;
try
{$IFDEF STRING_IS_UNICODE}
nt_hpw128 := LMD4.HashString(APassword, IndyTextEncoding_UTF16LE);
{$ELSE}
nt_hpw128 := LMD4.HashBytes(BuildUnicode(APassword));
{$ENDIF}
finally
LMD4.Free;
end;
Move(nt_hpw128[0], nt_hpw[1], 16);
FillChar(nt_hpw[17], 5, 0);
calc_resp(pdes_cblock(@nt_hpw[1]), ANonce, Pdes_key_schedule(@nt_resp[1]));
SetLength(Result, SizeOf(nt_resp));
Move(nt_resp[1], Result[0], SizeOf(nt_resp));
end;
function BuildType1Message(const ADomain, AHost: String): String;
var
LEncoding: IIdTextEncoding;
Type_1_Message: type_1_message_header;
lDomain: TIdBytes;
lHost: TIdBytes;
buf: TIdBytes;
begin
LEncoding := IndyTextEncoding_ASCII;
lDomain := ToBytes(UpperCase(ADomain), LEncoding);
lHost := ToBytes(UpperCase(AHost), LEncoding);
LEncoding := nil;
FillChar(Type_1_Message, SizeOf(Type_1_Message), #0);
{$IFDEF HAS_GENERICS_TArray_Copy}
TArray.Copy<Byte>(cProtocolStr, Type_1_Message.protocol, 8);
{$ELSE}
{$IFDEF USE_MARSHALLED_PTRS}
buf := cProtocolStr;
TMarshal.Copy(TBytesPtr(@buf)^, 0, TPtrWrapper.Create(@Type_1_Message.protocol[1]), 8);
{$ELSE}
Move(cProtocolStr[1], Type_1_Message.protocol[1], 8);
{$ENDIF}
{$ENDIF}
Type_1_Message._type := 1;
// S.G. 12/7/2002: Changed the flag to $B207 (from BugID 577895 and packet trace)
Type_1_Message.flags := MSG1_FLAGS; //was $A000B207; //b203;
Type_1_Message.dom_len1 := UInt16(Length(lDomain));
// dom_off := 0;
Type_1_Message.dom_off := 32;
Type_1_Message.host_len1 := UInt16(Length(lHost));
Type_1_Message.host_off := UInt32(Type_1_Message.dom_off + Type_1_Message.dom_len1);
Type_1_Message._type := HostToLittleEndian(Type_1_Message._type);
Type_1_Message.flags := HostToLittleEndian(Type_1_Message.flags);
Type_1_Message.dom_len1 := HostToLittleEndian(Type_1_Message.dom_len1);
Type_1_Message.dom_len2 := Type_1_Message.dom_len1;
Type_1_Message.dom_off := HostToLittleEndian(Type_1_Message.dom_off);
Type_1_Message.host_len1 := HostToLittleEndian(Type_1_Message.host_len1);
Type_1_Message.host_len2 := Type_1_Message.host_len1;
Type_1_Message.host_off := HostToLittleEndian(Type_1_Message.host_off);
buf := RawToBytes(Type_1_Message, SizeOf(Type_1_Message));
AppendBytes(buf, lDomain);
AppendBytes(buf, lHost);
Result := TIdEncoderMIME.EncodeBytes(buf);
end;
function BuildType3Message(const ADomain, AHost, AUsername: TIdUnicodeString;
const APassword: String; const ANonce: TIdBytes): String;
var
type3: type_3_message_header;
buf: TIdBytes;
lm_password: TIdBytes;
nt_password: TIdBytes;
lDomain: TIdBytes;
lHost: TIdBytes;
lUsername: TIdBytes;
begin
lm_password := SetupLanManagerPassword(APassword, ANonce);
nt_password := CreateNTPassword(APassword, ANonce);
lDomain := BuildUnicode(UpperCase(ADomain));
lHost := BuildUnicode(UpperCase(AHost));
lUsername := BuildUnicode(AUsername);
{$IFDEF HAS_GENERICS_TArray_Copy}
TArray.Copy<Byte>(cProtocolStr, Type3.protocol, 8);
{$ELSE}
{$IFDEF USE_MARSHALLED_PTRS}
buf := cProtocolStr;
TMarshal.Copy(TBytesPtr(@buf)^, 0, TPtrWrapper.Create(@Type3.protocol[1]), 8);
{$ELSE}
Move(cProtocolStr[1], Type3.protocol[1], 8);
{$ENDIF}
{$ENDIF}
Type3._type := 3;
Type3.lm_resp_len1 := UInt16(Length(lm_password));
Type3.lm_resp_off := $40;
Type3.nt_resp_len1 := UInt16(Length(nt_password));
Type3.nt_resp_off := UInt32(Type3.lm_resp_off + Type3.lm_resp_len1);
Type3.dom_len1 := UInt16(Length(lDomain));
Type3.dom_off := UInt32(Type3.nt_resp_off + Type3.nt_resp_len1);
Type3.user_len1 := UInt16(Length(lUsername));
Type3.user_off := UInt32(Type3.dom_off + Type3.dom_len1);
Type3.host_len1 := UInt16(Length(lHost));
Type3.host_off := UInt32(Type3.user_off + Type3.user_len1);
Type3.key_len1 := 0;
Type3.key_off := UInt32(Type3.user_len1 + Type3.host_len1);
Type3.flags := MSG3_FLAGS;
Type3._type := HostToLittleEndian(Type3._type);
Type3.lm_resp_len1 := HostToLittleEndian(Type3.lm_resp_len1);
Type3.lm_resp_len2 := Type3.lm_resp_len1;
Type3.lm_resp_off := HostToLittleEndian(Type3.lm_resp_off);
Type3.nt_resp_len1 := HostToLittleEndian(Type3.nt_resp_len1);
Type3.nt_resp_len2 := Type3.nt_resp_len1;
Type3.nt_resp_off := HostToLittleEndian(Type3.nt_resp_off);
Type3.dom_len1 := HostToLittleEndian(Type3.dom_len1);
Type3.dom_len2 := Type3.dom_len1;
Type3.dom_off := HostToLittleEndian(Type3.dom_off);
Type3.user_len1 := HostToLittleEndian(Type3.user_len1);
Type3.user_len2 := Type3.user_len1;
Type3.user_off := HostToLittleEndian(Type3.user_off);
Type3.host_len1 := HostToLittleEndian(Type3.host_len1);
Type3.host_len2 := Type3.host_len1;
Type3.host_off := HostToLittleEndian(Type3.host_off);
Type3.key_len1 := HostToLittleEndian(Type3.key_len1);
Type3.key_len2 := Type3.key_len1;
Type3.key_off := HostToLittleEndian(Type3.key_off);
Type3.flags := HostToLittleEndian(Type3.flags);
buf := RawToBytes(Type3, SizeOf(Type3));
AppendBytes(buf, lm_password);
AppendBytes(buf, nt_password);
AppendBytes(buf, lDomain);
AppendBytes(buf, lUsername);
AppendBytes(buf, lHost);
Result := TIdEncoderMIME.EncodeBytes(buf);
end;
{$ELSE}
procedure BytesToCharArray(const ABytes : TIdBytes; var VArray : Array of Char; const AIndex : Integer = 0);
var
i, ll, lh : Integer;
begin
ll := Low(VArray);
lh := High(Varray);
for i := ll to lh do begin
VArray[i] := Char(ABytes[ (i - ll)+ AIndex]);
end;
end;
procedure BytesToByteArray(const ABytes : TIdBytes; var VArray : Array of Byte; const AIndex : Integer = 0);
var
i, ll, lh : Integer;
begin
ll := Low(VArray);
lh := High(Varray);
for i := ll to lh do begin
VArray[i] := ABytes[ (i - ll)+ AIndex];
end;
end;
procedure ByteArrayToBytes(const VArray : array of Byte; const ABytes : TIdBytes; const AIndex : Integer = 0);
var
i, ll, lh : Integer;
begin
ll := Low(VArray);
lh := High(Varray);
for i := ll to lh do begin
ABytes[ (i - ll)+ AIndex] := VArray[i];
end;
end;
function ntlm_base.GetBytesLen: UInt32;
begin
Result := 8;
end;
procedure ntlm_base.ReadStruct(const ABytes : TIdBytes; var VIndex : UInt32);
var
i : Integer;
begin
inherited ReadStruct(ABytes,VIndex);
for i := 1 to Length(fprotocol) do
begin
fprotocol[i] := Char(ABytes[i+VIndex]);
end;
Inc(VIndex, Length(fprotocol));
end;
procedure ntlm_base.WriteStruct(var VBytes : TIdBytes; var VIndex : UInt32);
var
LLen : Integer;
LBytes : TIdBytes;
begin
inherited WriteStruct(VBytes,VIndex);
LBytes := System.Text.ASCIIEncoding.GetBytes(fprotocol);
LLen := Length(fprotocol);
CopyTIdBytes(LBytes, VIndex, VBytes, VIndex, LLen);
Inc(VIndex, LLen);
end;
function type_1_message_header.GetBytesLen: UInt32;
begin
Result := inherited GetByesLen() + 24;
end;
procedure type_1_message_header.ReadStruct(const ABytes : TIdBytes; var VIndex : UInt32);
begin
inherited ReadStruct(ABytes, VIndex);
f_type := ABytes[VIndex];
Inc(VIndex);
BytesToByteArray(ABytes, fpad, VIndex);
Inc(VIndex, Length(fpad));
fflags := BytesToUInt16(ABytes, VIndex);
Inc(VIndex, 2);
BytesToByteArray(ABytes, fpad2, VIndex);
Inc(VIndex, Length(fpad2));
fdom_len1 := BytesToUInt16(ABytes, VIndex);
Inc(VIndex, 2);
fdom_len2 := BytesToUInt16(ABytes, VIndex);
Inc(VIndex, 2);
fdom_off := BytesToUInt32(ABytes, VIndex);
Inc(VIndex, 4);
fhost_len1 := BytesToUInt16(ABytes, VIndex);
Inc(VIndex, 2);
fhost_len2 := BytesToUInt16(ABytes, VIndex);
Inc(VIndex, 2);
fhost_off := BytesToUInt32(ABytes, VIndex);
Inc(VIndex, 4);
end;
procedure type_1_message_header.WriteStruct(var VBytes : TIdBytes; var VIndex : UInt32);
begin
inherited WriteStruct(VBytes, VIndex);
VBytes[VIndex] := f_type;
Inc(VIndex);
ByteArrayToBytes(fpad, VBytes, VIndex);
Inc(VIndex, Length(fpad));
CopyTIdUInt16(fflags, VBytes, VIndex);
Inc(VIndex, 2);
ByteArrayToBytes(fpad2, VBytes, VIndex);
Inc(VIndex, Length(fpad2));
CopyTIdUInt16(fdom_len1, VBytes, VIndex);
Inc(VIndex, 2);
CopyTIdUInt16(fdom_len2, VBytes, VIndex);
Inc(VIndex, 2);
CopyTIdUInt32(fdom_off, VBytes, VIndex);
Inc(VIndex, 4);
CopyTIdUInt16(fhost_len1, VBytes, VIndex);
Inc(VIndex, 2);
CopyTIdUInt16(fhost_len2, VBytes, VIndex);
Inc(VIndex, 2);
CopyTIdUInt32(fhost_off, VBytes, VIndex);
Inc(VIndex, 4);
end;
function type_2_message_header.GetBytesLen: UInt32;
begin
Result := inherited GetBytesLen() + 40;
end;
procedure type_2_message_header.ReadStruct(const ABytes : TIdBytes; var VIndex : UInt32);
begin
inherited ReadStruct(ABytes, VIndex);
f_type := ABytes[VIndex];
Inc(VIndex);
BytesToByteArray(ABytes, fpad, VIndex);
Inc(VIndex, Length(fpad));
fhost_len1 := BytesToUInt16(ABytes, VIndex);
Inc(VIndex, 2);
fhost_len2 := BytesToUInt16(ABytes, VIndex);
Inc(VIndex, 2);
fhost_off := BytesToUInt32(ABytes, VIndex);
Inc(VIndex, 4);
fflags := BytesToUInt16(ABytes, VIndex);
Inc(VIndex, 2);
BytesToByteArray(ABytes, fPad2, VIndex);
Inc(VIndex, Length(fpad2));
BytesToByteArray(ABytes, fnonce, VIndex);
Inc(VIndex, Length(fnonce));
BytesToByteArray(ABytes, freserved, VIndex);
Inc(VIndex, Length(freserved));
finfo_len1 := BytesToUInt16(ABytes, VIndex);
Inc(VIndex, 2);
finfo_len2 := BytesToUInt16(ABytes, VIndex);
Inc(VIndex, 2);
finfo_off := BytesToUInt32(ABytes, VIndex);
Inc(VIndex, 4);
end;
procedure type_2_message_header.WriteStruct(var VBytes : TIdBytes; var VIndex : UInt32);
begin
inherited WriteStruct(VBytes, VIndex);
VBytes[VIndex] := f_type;
Inc(VIndex);
ByteArrayToBytes(fPad, VBytes, VIndex);
Inc(VIndex, Length(fpad));
CopyTIdUInt16(fhost_len1, VBytes, VIndex);
Inc(VIndex, 2);
CopyTIdUInt16(fhost_len2, VBytes, VIndex);
Inc(VIndex, 2);
CopyTIdUInt32(fhost_off, VBytes, VIndex);
Inc(VIndex, 4);
CopyTIdUInt16(fflags, VBytes, VIndex);
Inc(VIndex, 2);
ByteArrayToBytes(fPad2, VBytes, VIndex);
Inc(VIndex, Length(fPad2));
ByteArrayToBytes(fnonce, VBytes, VIndex);
Inc(VIndex, Length(fnonce));
ByteArrayToBytes(freserved, VBytes, VIndex);
Inc(VIndex, Length(freserved));
CopyTIdUInt16(finfo_len1, VBytes, VIndex);
Inc(VIndex, 2);
CopyTIdUInt16(finfo_len2, VBytes, VIndex);
Inc(VIndex, 2);
CopyTIdUInt32(finfo_off, VBytes, VIndex);
Inc(VIndex, 4);
end;
function type_3_message_header.GetBytesLen: UInt32;
begin
Result := inherited GetByteLen() + ? ;
end;
procedure type_3_message_header.ReadStruct(const ABytes : TIdBytes; var VIndex : UInt32);
begin
{
_type: UInt32; // 0x03
lm_resp_len1: UInt16; // LanManager response length (always 0x18)
lm_resp_len2: UInt16; // LanManager response length (always 0x18)
lm_resp_off: UInt32; // LanManager response offset
nt_resp_len1: UInt16; // NT response length (always 0x18)
nt_resp_len2: UInt16; // NT response length (always 0x18)
nt_resp_off: UInt32; // NT response offset
dom_len1: UInt16; // domain string length
dom_len2: UInt16; // domain string length
dom_off: UInt32; // domain string offset (always 0x40)
user_len1: UInt16; // username string length
user_len2: UInt16; // username string length
user_off: UInt32; // username string offset
host_len1: UInt16; // host string length
host_len2: UInt16; // host string length
host_off: UInt32; // host string offset
zero: UInt32;
msg_len: UInt32; // message length
flags: UInt32; // 0xA0808205
}
end;
procedure type_3_message_header.WriteStruct(var VBytes : TIdBytes; var VIndex : UInt32);
begin
{
_type: UInt32; // 0x03
lm_resp_len1: UInt16; // LanManager response length (always 0x18)
lm_resp_len2: UInt16; // LanManager response length (always 0x18)
lm_resp_off: UInt32; // LanManager response offset
nt_resp_len1: UInt16; // NT response length (always 0x18)
nt_resp_len2: UInt16; // NT response length (always 0x18)
nt_resp_off: UInt32; // NT response offset
dom_len1: UInt16; // domain string length
dom_len2: UInt16; // domain string length
dom_off: UInt32; // domain string offset (always 0x40)
user_len1: UInt16; // username string length
user_len2: UInt16; // username string length
user_off: UInt32; // username string offset
host_len1: UInt16; // host string length
host_len2: UInt16; // host string length
host_off: UInt32; // host string offset
zero: UInt32;
msg_len: UInt32; // message length
flags: UInt32; // 0xA0808205
}
end;
{$ENDIF}
end.
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