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#
# Samba LM/NT Hash Generating Library.
# Slightly modified to fit in with Webmin
#
# Copyright(C) 2001 Benjamin Kuit <bj@it.uts.edu.au>
#
# Works out if local system has the module Digest::MD4, and uses it
# if it does, otherwise uses ported version of the md4 algorithm
# Performance is alot better with Digest::MD4, so its recommended to
# get Digest::MD4 installed if you intend to generate alot of hashes
# in a small amount of time.
my $HaveDigestMD4;
BEGIN {
$HaveDigestMD4 = 0;
if ( eval "require 'Digest/MD4.pm';" ) {
$HaveDigestMD4 = 1;
}
}
# lmhash PASSWORD
# Generates lanman password hash for a given password, returns the hash
#
# Extracted and ported from SAMBA/source/libsmb/smbencrypt.c:nt_lm_owf_gen
sub lmhash($) {
my ( $pass ) = @_;
my ( @p16 );
$pass = substr($pass||"",0,129);
$pass =~ tr/a-z/A-Z/;
$pass = substr($pass,0,14);
@p16 = E_P16($pass);
return join("", map {sprintf("%02X",$_);} @p16);
}
# nthash PASSWORD
# Generates nt md4 password hash for a given password, returns the hash
#
# Extracted and ported from SAMBA/source/libsmb/smbencrypt.c:nt_lm_owf_gen
sub nthash($) {
my ( $pass ) = @_;
my ( $hex );
my ( $digest );
$pass = substr($pass||"",0,128);
$pass =~ s/(.)/$1\000/sg;
$hex = "";
if ( $HaveDigestMD4 ) {
eval {
$digest = new Digest::MD4;
$digest->reset();
$digest->add($pass);
$hex = $digest->hexdigest();
$hex =~ tr/a-z/A-Z/;
};
$HaveDigestMD4 = 0 unless ( $hex );
}
$hex = sprintf("%02X"x16,mdfour($pass)) unless ( $hex );
return $hex;
}
# ntlmgen PASSWORD, LMHASH, NTHASH
# Generate lanman and nt md4 password hash for given password, and assigns
# values to arguments. Combined function of lmhash and nthash
sub ntlmgen {
my ( $nthash, $lmhash );
$nthash = nthash($_[0]);
$lmhash = lmhash($_[0]);
if ( $#_ == 2 ) {
$_[1] = $lmhash;
$_[2] = $nthash;
}
return ( $lmhash, $nthash );
}
# Support functions
# Ported from SAMBA/source/lib/md4.c:F,G and H respectfully
sub F { my ( $X, $Y, $Z ) = @_; return ($X&$Y) | ((~$X)&$Z); }
sub G { my ( $X, $Y, $Z) = @_; return ($X&$Y) | ($X&$Z) | ($Y&$Z); }
sub H { my ($X, $Y, $Z) = @_; return $X^$Y^$Z; }
# Needed? because perl seems to choke on overflowing when doing bitwise
# operations on numbers larger than 32 bits. Well, it did on my machine =)
sub add32 {
my ( @v ) = @_;
my ( $ret, @sum );
foreach ( @v ) {
$_ = [ ($_&0xffff0000)>>16, ($_&0xffff) ];
}
@sum = ();
foreach ( @v ) {
$sum[0] += $_->[0];
$sum[1] += $_->[1];
}
$sum[0] += ($sum[1]&0xffff0000)>>16;
$sum[1] &= 0xffff;
$sum[0] &= 0xffff;
$ret = ($sum[0]<<16) | $sum[1];
return $ret;
}
# Ported from SAMBA/source/lib/md4.c:lshift
# Renamed to prevent clash with SAMBA/source/libsmb/smbdes.c:lshift
sub md4lshift {
my ($x, $s) = @_;
$x &= 0xFFFFFFFF;
return (($x<<$s)&0xFFFFFFFF) | ($x>>(32-$s));
}
# Ported from SAMBA/source/lib/md4.c:ROUND1
sub ROUND1 {
my($a,$b,$c,$d,$k,$s,@X) = @_;
$_[0] = md4lshift(add32($a,F($b,$c,$d),$X[$k]), $s);
return $_[0];
}
# Ported from SAMBA/source/lib/md4.c:ROUND2
sub ROUND2 {
my ($a,$b,$c,$d,$k,$s,@X) = @_;
$_[0] = md4lshift(add32($a,G($b,$c,$d),$X[$k],0x5A827999), $s);
return $_[0];
}
# Ported from SAMBA/source/lib/md4.c:ROUND3
sub ROUND3 {
my ($a,$b,$c,$d,$k,$s,@X) = @_;
$_[0] = md4lshift(add32($a,H($b,$c,$d),$X[$k],0x6ED9EBA1), $s);
return $_[0];
}
# Ported from SAMBA/source/lib/md4.c:mdfour64
sub mdfour64 {
my ( $A, $B, $C, $D, @M ) = @_;
my ( $AA, $BB, $CC, $DD );
my ( @X );
@X = (map { $_?$_:0 } @M)[0..15];
$AA=$A; $BB=$B; $CC=$C; $DD=$D;
ROUND1($A,$B,$C,$D, 0, 3, @X); ROUND1($D,$A,$B,$C, 1, 7, @X);
ROUND1($C,$D,$A,$B, 2, 11, @X); ROUND1($B,$C,$D,$A, 3, 19, @X);
ROUND1($A,$B,$C,$D, 4, 3, @X); ROUND1($D,$A,$B,$C, 5, 7, @X);
ROUND1($C,$D,$A,$B, 6, 11, @X); ROUND1($B,$C,$D,$A, 7, 19, @X);
ROUND1($A,$B,$C,$D, 8, 3, @X); ROUND1($D,$A,$B,$C, 9, 7, @X);
ROUND1($C,$D,$A,$B, 10, 11, @X); ROUND1($B,$C,$D,$A, 11, 19, @X);
ROUND1($A,$B,$C,$D, 12, 3, @X); ROUND1($D,$A,$B,$C, 13, 7, @X);
ROUND1($C,$D,$A,$B, 14, 11, @X); ROUND1($B,$C,$D,$A, 15, 19, @X);
ROUND2($A,$B,$C,$D, 0, 3, @X); ROUND2($D,$A,$B,$C, 4, 5, @X);
ROUND2($C,$D,$A,$B, 8, 9, @X); ROUND2($B,$C,$D,$A, 12, 13, @X);
ROUND2($A,$B,$C,$D, 1, 3, @X); ROUND2($D,$A,$B,$C, 5, 5, @X);
ROUND2($C,$D,$A,$B, 9, 9, @X); ROUND2($B,$C,$D,$A, 13, 13, @X);
ROUND2($A,$B,$C,$D, 2, 3, @X); ROUND2($D,$A,$B,$C, 6, 5, @X);
ROUND2($C,$D,$A,$B, 10, 9, @X); ROUND2($B,$C,$D,$A, 14, 13, @X);
ROUND2($A,$B,$C,$D, 3, 3, @X); ROUND2($D,$A,$B,$C, 7, 5, @X);
ROUND2($C,$D,$A,$B, 11, 9, @X); ROUND2($B,$C,$D,$A, 15, 13, @X);
ROUND3($A,$B,$C,$D, 0, 3, @X); ROUND3($D,$A,$B,$C, 8, 9, @X);
ROUND3($C,$D,$A,$B, 4, 11, @X); ROUND3($B,$C,$D,$A, 12, 15, @X);
ROUND3($A,$B,$C,$D, 2, 3, @X); ROUND3($D,$A,$B,$C, 10, 9, @X);
ROUND3($C,$D,$A,$B, 6, 11, @X); ROUND3($B,$C,$D,$A, 14, 15, @X);
ROUND3($A,$B,$C,$D, 1, 3, @X); ROUND3($D,$A,$B,$C, 9, 9, @X);
ROUND3($C,$D,$A,$B, 5, 11, @X); ROUND3($B,$C,$D,$A, 13, 15, @X);
ROUND3($A,$B,$C,$D, 3, 3, @X); ROUND3($D,$A,$B,$C, 11, 9, @X);
ROUND3($C,$D,$A,$B, 7, 11, @X); ROUND3($B,$C,$D,$A, 15, 15, @X);
# We want to change the arguments, so assign them to $_[0] markers
# rather than to $A..$D
$_[0] = add32($A,$AA); $_[1] = add32($B,$BB);
$_[2] = add32($C,$CC); $_[3] = add32($D,$DD);
@X = map { 0 } (1..16);
}
# Ported from SAMBA/source/lib/md4.c:copy64
sub copy64 {
my ( @in ) = @_;
my ( $i, @M );
for $i ( 0..15 ) {
$M[$i] = ($in[$i*4+3]<<24) | ($in[$i*4+2]<<16) |
($in[$i*4+1]<<8) | ($in[$i*4+0]<<0);
}
return @M;
}
# Ported from SAMBA/source/lib/md4.c:copy4
sub copy4 {
my ( $x ) = @_;
my ( @out );
$out[0] = $x&0xFF;
$out[1] = ($x>>8)&0xFF;
$out[2] = ($x>>16)&0xFF;
$out[3] = ($x>>24)&0xFF;
@out = map { $_?$_:0 } @out;
return @out;
}
# Ported from SAMBA/source/lib/md4.c:mdfour
sub mdfour {
my ( @in ) = unpack("C*",$_[0]);
my ( $b, @A, @M, @buf, @out );
$b = scalar @in * 8;
@A = ( 0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476 );
while (scalar @in > 64 ) {
@M = copy64( @in );
mdfour64( @A, @M );
@in = @in[64..$#in];
}
@buf = ( @in, 0x80, map {0} (1..128) )[0..127];
if ( scalar @in <= 55 ) {
@buf[56..59] = copy4( $b );
@M = copy64( @buf );
mdfour64( @A, @M );
}
else {
@buf[120..123] = copy4( $b );
@M = copy64( @buf );
mdfour64( @A, @M );
@M = copy64( @buf[64..$#buf] );
mdfour64( @A, @M );
}
@out[0..3] = copy4($A[0]);
@out[4..7] = copy4($A[1]);
@out[8..11] = copy4($A[2]);
@out[12..15] = copy4($A[3]);
return @out;
}
# Contants used in lanlam hash calculations
# Ported from SAMBA/source/libsmb/smbdes.c:perm1[56]
my @perm1 = (57, 49, 41, 33, 25, 17, 9,
1, 58, 50, 42, 34, 26, 18,
10, 2, 59, 51, 43, 35, 27,
19, 11, 3, 60, 52, 44, 36,
63, 55, 47, 39, 31, 23, 15,
7, 62, 54, 46, 38, 30, 22,
14, 6, 61, 53, 45, 37, 29,
21, 13, 5, 28, 20, 12, 4);
# Ported from SAMBA/source/libsmb/smbdes.c:perm2[48]
my @perm2 = (14, 17, 11, 24, 1, 5,
3, 28, 15, 6, 21, 10,
23, 19, 12, 4, 26, 8,
16, 7, 27, 20, 13, 2,
41, 52, 31, 37, 47, 55,
30, 40, 51, 45, 33, 48,
44, 49, 39, 56, 34, 53,
46, 42, 50, 36, 29, 32);
# Ported from SAMBA/source/libsmb/smbdes.c:perm3[64]
my @perm3 = (58, 50, 42, 34, 26, 18, 10, 2,
60, 52, 44, 36, 28, 20, 12, 4,
62, 54, 46, 38, 30, 22, 14, 6,
64, 56, 48, 40, 32, 24, 16, 8,
57, 49, 41, 33, 25, 17, 9, 1,
59, 51, 43, 35, 27, 19, 11, 3,
61, 53, 45, 37, 29, 21, 13, 5,
63, 55, 47, 39, 31, 23, 15, 7);
# Ported from SAMBA/source/libsmb/smbdes.c:perm4[48]
my @perm4 = ( 32, 1, 2, 3, 4, 5,
4, 5, 6, 7, 8, 9,
8, 9, 10, 11, 12, 13,
12, 13, 14, 15, 16, 17,
16, 17, 18, 19, 20, 21,
20, 21, 22, 23, 24, 25,
24, 25, 26, 27, 28, 29,
28, 29, 30, 31, 32, 1);
# Ported from SAMBA/source/libsmb/smbdes.c:perm5[32]
my @perm5 = ( 16, 7, 20, 21,
29, 12, 28, 17,
1, 15, 23, 26,
5, 18, 31, 10,
2, 8, 24, 14,
32, 27, 3, 9,
19, 13, 30, 6,
22, 11, 4, 25);
# Ported from SAMBA/source/libsmb/smbdes.c:perm6[64]
my @perm6 =( 40, 8, 48, 16, 56, 24, 64, 32,
39, 7, 47, 15, 55, 23, 63, 31,
38, 6, 46, 14, 54, 22, 62, 30,
37, 5, 45, 13, 53, 21, 61, 29,
36, 4, 44, 12, 52, 20, 60, 28,
35, 3, 43, 11, 51, 19, 59, 27,
34, 2, 42, 10, 50, 18, 58, 26,
33, 1, 41, 9, 49, 17, 57, 25);
# Ported from SAMBA/source/libsmb/smbdes.c:sc[16]
my @sc = (1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1);
# Ported from SAMBA/source/libsmb/smbdes.c:sbox[8][4][16]
# Side note, I used cut and paste for all these numbers, I did NOT
# type them all in =)
my @sbox = ([[14, 4, 13, 1, 2, 15, 11, 8, 3, 10, 6, 12, 5, 9, 0, 7],
[ 0, 15, 7, 4, 14, 2, 13, 1, 10, 6, 12, 11, 9, 5, 3, 8],
[ 4, 1, 14, 8, 13, 6, 2, 11, 15, 12, 9, 7, 3, 10, 5, 0],
[15, 12, 8, 2, 4, 9, 1, 7, 5, 11, 3, 14, 10, 0, 6, 13]],
[[15, 1, 8, 14, 6, 11, 3, 4, 9, 7, 2, 13, 12, 0, 5, 10],
[ 3, 13, 4, 7, 15, 2, 8, 14, 12, 0, 1, 10, 6, 9, 11, 5],
[ 0, 14, 7, 11, 10, 4, 13, 1, 5, 8, 12, 6, 9, 3, 2, 15],
[13, 8, 10, 1, 3, 15, 4, 2, 11, 6, 7, 12, 0, 5, 14, 9]],
[[10, 0, 9, 14, 6, 3, 15, 5, 1, 13, 12, 7, 11, 4, 2, 8],
[13, 7, 0, 9, 3, 4, 6, 10, 2, 8, 5, 14, 12, 11, 15, 1],
[13, 6, 4, 9, 8, 15, 3, 0, 11, 1, 2, 12, 5, 10, 14, 7],
[ 1, 10, 13, 0, 6, 9, 8, 7, 4, 15, 14, 3, 11, 5, 2, 12]],
[[ 7, 13, 14, 3, 0, 6, 9, 10, 1, 2, 8, 5, 11, 12, 4, 15],
[13, 8, 11, 5, 6, 15, 0, 3, 4, 7, 2, 12, 1, 10, 14, 9],
[10, 6, 9, 0, 12, 11, 7, 13, 15, 1, 3, 14, 5, 2, 8, 4],
[ 3, 15, 0, 6, 10, 1, 13, 8, 9, 4, 5, 11, 12, 7, 2, 14]],
[[ 2, 12, 4, 1, 7, 10, 11, 6, 8, 5, 3, 15, 13, 0, 14, 9],
[14, 11, 2, 12, 4, 7, 13, 1, 5, 0, 15, 10, 3, 9, 8, 6],
[ 4, 2, 1, 11, 10, 13, 7, 8, 15, 9, 12, 5, 6, 3, 0, 14],
[11, 8, 12, 7, 1, 14, 2, 13, 6, 15, 0, 9, 10, 4, 5, 3]],
[[12, 1, 10, 15, 9, 2, 6, 8, 0, 13, 3, 4, 14, 7, 5, 11],
[10, 15, 4, 2, 7, 12, 9, 5, 6, 1, 13, 14, 0, 11, 3, 8],
[ 9, 14, 15, 5, 2, 8, 12, 3, 7, 0, 4, 10, 1, 13, 11, 6],
[ 4, 3, 2, 12, 9, 5, 15, 10, 11, 14, 1, 7, 6, 0, 8, 13]],
[[ 4, 11, 2, 14, 15, 0, 8, 13, 3, 12, 9, 7, 5, 10, 6, 1],
[13, 0, 11, 7, 4, 9, 1, 10, 14, 3, 5, 12, 2, 15, 8, 6],
[ 1, 4, 11, 13, 12, 3, 7, 14, 10, 15, 6, 8, 0, 5, 9, 2],
[ 6, 11, 13, 8, 1, 4, 10, 7, 9, 5, 0, 15, 14, 2, 3, 12]],
[[13, 2, 8, 4, 6, 15, 11, 1, 10, 9, 3, 14, 5, 0, 12, 7],
[ 1, 15, 13, 8, 10, 3, 7, 4, 12, 5, 6, 11, 0, 14, 9, 2],
[ 7, 11, 4, 1, 9, 12, 14, 2, 0, 6, 10, 13, 15, 3, 5, 8],
[ 2, 1, 14, 7, 4, 10, 8, 13, 15, 12, 9, 0, 3, 5, 6, 11]]);
# Ported from SAMBA/source/libsmb/smbdes.c:xor
# Hack: Split arguments in half and then xor's first half of arguments to
# second half of arguments. Probably proper way of doing this would
# be to used referenced variables
sub mxor {
my ( @in ) = @_;
my ( $i, $off, @ret );
$off = int($#in/2);
for $i ( 0..$off ) {
$ret[$i] = $in[$i] ^ $in[$i+$off+1];
}
return @ret;
}
# Ported from SAMBA/source/libsmb/smbdes.c:str_to_key
sub str_to_key {
my ( @str ) = @_;
my ( $i, @key );
@str = map { $_?$_:0 } @str;
$key[0] = $str[0]>>1;
$key[1] = (($str[0]&0x01)<<6) | ($str[1]>>2);
$key[2] = (($str[1]&0x03)<<5) | ($str[2]>>3);
$key[3] = (($str[2]&0x07)<<4) | ($str[3]>>4);
$key[4] = (($str[3]&0x0F)<<3) | ($str[4]>>5);
$key[5] = (($str[4]&0x1F)<<2) | ($str[5]>>6);
$key[6] = (($str[5]&0x3F)<<1) | ($str[6]>>7);
$key[7] = $str[6]&0x7F;
for $i (0..7) {
$key[$i] = ($key[$i]<<1);
}
return @key;
}
# Ported from SAMBA/source/libsmb/smbdes.c:permute
# Would probably be better to pass in by reference
sub permute {
my ( @a ) = @_;
my ( $i, $n, @in, @p, @out );
# Last argument is the count of the perm values
$n = $a[$#a];
@in = @a[0..($#a-$n-1)];
@p = @_[($#a-$n)..($#a-1)];
for $i ( 0..($n-1) ) {
$out[$i] = $in[$p[$i]-1]?1:0;
}
return @out;
}
# Ported from SAMBA/source/libsmb/smbdes.c:lshift
# Lazy shifting =)
sub lshift {
my ( $count, @d ) = @_;
$count %= ($#d+1);
@d = (@d,@d)[$count..($#d+$count)];
return @d;
}
# Ported from SAMBA/source/libsmb/smbdes.c:dohash
sub dohash {
my ( @a ) = @_;
my ( @in, @key, $forw, @pk1, @c, @d, @ki, @cd, $i, @pd1, @l, @r, @rl, @out );
@in = @a[0..63];
@key = @a[64..($#_-1)];
$forw = $a[$#a];
@pk1 = permute( @key, @perm1, 56 );
@c = @pk1[0..27];
@d = @pk1[28..55];
for $i ( 0..15 ) {
@c = lshift( $sc[$i], @c );
@d = lshift( $sc[$i], @d );
@cd = map { $_?1:0 } ( @c, @d );
$ki[$i] = [ permute( @cd, @perm2, 48 ) ];
}
@pd1 = permute( @in, @perm3, 64 );
@l = @pd1[0..31];
@r = @pd1[32..63];
for $i ( 0..15 ) {
my ( $j, $k, @b, @er, @erk, @cb, @pcb, @r2 );
@er = permute( @r, @perm4, 48 );
@erk = mxor(@er, @{ @ki[$forw?$i:(15-$i)] });
for $j ( 0..7 ) {
for $k ( 0..5 ) {
$b[$j][$k] = $erk[$j*6 + $k];
}
}
for $j ( 0..7 ) {
my ( $m, $n );
$m = ($b[$j][0]<<1) | $b[$j][5];
$n = ($b[$j][1]<<3) | ($b[$j][2]<<2) | ($b[$j][3]<<1) | $b[$j][4];
for $k ( 0..3 ) {
$b[$j][$k]=($sbox[$j][$m][$n] & (1<<(3-$k)))?1:0;
}
}
for $j ( 0..7 ) {
for $k ( 0..3 ) {
$cb[$j*4+$k]=$b[$j][$k];
}
}
@pcb = permute( @cb, @perm5, 32);
@r2 = mxor(@l,@pcb);
@l = @r[0..31];
@r = @r2[0..31];
}
@rl = ( @r, @l );
@out = permute( @rl, @perm6, 64 );
return @out;
}
# Ported from SAMBA/source/libsmb/smbdes.c:smbhash
sub smbhash{
my ( @in, @key, $forw, @outb, @out, @inb, @keyb, @key2, $i );
@in = @_[0..7];
@key = @_[8..14];
$forw = $_[$#_];
@key2 = str_to_key(@key);
for $i ( 0..63 ) {
$inb[$i] = ( $in[$i/8] & (1<<(7-($i%8)))) ? 1:0;
$keyb[$i] = ( $key2[$i/8] & (1<<(7-($i%8)))) ? 1:0;
$outb[$i] = 0;
}
@outb = dohash(@inb,@keyb,$forw);
for $i ( 0..7 ) {
$out[$i] = 0;
}
for $i ( 0..64 ) {
if ( $outb[$i] ) {
$out[$i/8] |= (1<<(7-($i%8)));
}
}
return @out;
}
# Ported from SAMBA/source/libsmb/smbdes.c:E_P16
sub E_P16 {
my ( @p16, @p14, @sp8 );
@p16 = map { 0 } (1..16);
@p14 = unpack("C*",$_[0]);
@sp8 = ( 0x4b, 0x47, 0x53, 0x21, 0x40, 0x23, 0x24, 0x25 );
@p16 = (smbhash(@sp8,@p14[0..6],1),smbhash(@sp8,@p14[7..13],1));
return @p16;
}
1;
__END__
=head1 NAME
Crypt::SmbHash - Perl-only implementation of lanman and nt md4 hash functions, for use in Samba style smbpasswd entries
=head1 SYNOPSIS
use Crypt::SmbHash;
ntlmgen SCALAR, LMSCALAR, NTSCALAR;
=head1 DESCRIPTION
This module generates Lanman and NT MD4 style password hashes, using
perl-only code for portability. The module aids in the administration
of Samba style systems.
In the Samba distribution, authentication is referred to a private
smbpasswd file. Entries have similar forms to the following:
username:unixuid:LM:NT
Where LM and NT are one-way password hashes of the same password.
ntlmgen generates the hashes given in the first argument, and places
the result in the second and third arguments.
Example:
To generate a smbpasswd entry:
#!/usr/local/bin/perl
use Crypt::SmbHash;
$username = $ARGV[0];
$password = $ARGV[1];
if ( !$password ) {
print "Not enough arguments\n";
print "Usage: $0 username password\n";
exit 1;
}
$uid = (getpwnam($username))[2];
my ($login,undef,$uid) = getpwnam($ARGV[0]);
ntlmgen $password, $lm, $nt;
printf "%s:%d:%s:%s:[%-11s]:LCT-%08X\n", $login, $uid, $lm, $nt, "U", time;
ntlmgen returns returns the hash values in a list context, so the alternative
method of using it is:
( $lm, $nt ) = ntlmgen $password;
The functions lmhash and nthash are used by ntlmgen to generate the
hashes, and are available when requested:
use Crypt::SmbHash qw(lmhash nthash)
$lm = lmhash($pass);
$nt = nthash($pass);
=head1 MD4
The algorithm used in nthash requires the md4 algorithm. This algorithm
is included in this module for completeness, but because it is written
in all-perl code ( rather than in C ), it's not very quick.
However if you have the Digest::MD4 module installed, Crypt::SmbHash will
try to use that module instead, making it much faster.
A simple test compared calling nthash without Digest::MD4 installed, and
with, this showed that using nthash on a system with Digest::MD4 installed
proved to be over 90 times faster.
=head1 AUTHOR
Ported from Samba by Benjamin Kuit <lt>bj@it.uts.edu.au<gt>.
Samba is Copyright(C) Andrew Tridgell 1997-1998
Because this module is a direct port of code within the Samba
distribution, it follows the same license, that is:
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
=cut
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