1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
#!/usr/bin/env perl
use strict;
#
# Converts a sudoers file to LDIF format in prepration for loading into
# the LDAP server.
#
# BUGS:
# Does not yet handle multiple lines with : in them
# Does not yet remove quotation marks from options
# Does not yet escape + at the beginning of a dn
# Does not yet handle line wraps correctly
# Does not yet handle multiple roles with same name (needs tiebreaker)
#
# CAVEATS:
# Sudoers entries can have multiple RunAs entries that override former ones,
# with LDAP sudoRunAs{Group,User} applies to all commands in a sudoRole
my %RA;
my %UA;
my %HA;
my %CA;
my $base=$ENV{SUDOERS_BASE} or die "$0: Container SUDOERS_BASE undefined\n";
my @options=();
my $did_defaults=0;
# parse sudoers one line at a time
while (<>){
# remove comment
s/#.*//;
# line continuation
$_.=<> while s/\\\s*$//s;
# cleanup newline
chomp;
# ignore blank lines
next if /^\s*$/;
if (/^Defaults\s+/i) {
my $opt=$';
$opt=~s/\s+$//; # remove trailing whitespace
push @options,$opt;
} elsif (/^(\S+)\s+(.+)=\s*(.*)/) {
# Aliases or Definitions
my ($p1,$p2,$p3)=($1,$2,$3);
$p2=~s/\s+$//; # remove trailing whitespace
$p3=~s/\s+$//; # remove trailing whitespace
if ($p1 eq "User_Alias") {
$UA{$p2}=$p3;
} elsif ($p1 eq "Runas_Alias") {
$RA{$p2}=$p3;
} elsif ($p1 eq "Host_Alias") {
$HA{$p2}=$p3;
} elsif ($p1 eq "Cmnd_Alias") {
$CA{$p2}=$p3;
} else {
if (!$did_defaults++){
# do this once
print "dn: cn=defaults,$base\n";
print "objectClass: top\n";
print "objectClass: sudoRole\n";
print "cn: defaults\n";
print "description: Default sudoOption's go here\n";
print "sudoOption: $_\n" foreach @options;
print "\n";
}
# Definition
my @users=split /\s*,\s*/,$p1;
my @hosts=split /\s*,\s*/,$p2;
my @cmds= split /\s*,\s*/,$p3;
@options=();
print "dn: cn=$users[0],$base\n";
print "objectClass: top\n";
print "objectClass: sudoRole\n";
print "cn: $users[0]\n";
# will clobber options
print "sudoUser: $_\n" foreach expand(\%UA,@users);
print "sudoHost: $_\n" foreach expand(\%HA,@hosts);
foreach (@cmds) {
if (s/^\(([^\)]+)\)\s*//) {
my @runas = split(/:\s*/, $1);
if (defined($runas[0])) {
print "sudoRunAsUser: $_\n" foreach expand(\%RA, split(/,\s*/, $runas[0]));
}
if (defined($runas[1])) {
print "sudoRunAsGroup: $_\n" foreach expand(\%RA, split(/,\s*/, $runas[1]));
}
}
}
print "sudoCommand: $_\n" foreach expand(\%CA,@cmds);
print "sudoOption: $_\n" foreach @options;
print "\n";
}
} else {
print "parse error: $_\n";
}
}
#
# recursively expand hash elements
sub expand{
my $ref=shift;
my @a=();
# preen the line a little
foreach (@_){
# if NOPASSWD: directive found, mark entire entry as not requiring
s/NOPASSWD:\s*// && push @options,"!authenticate";
s/PASSWD:\s*// && push @options,"authenticate";
s/NOEXEC:\s*// && push @options,"noexec";
s/EXEC:\s*// && push @options,"!noexec";
s/SETENV:\s*// && push @options,"setenv";
s/NOSETENV:\s*// && push @options,"!setenv";
s/\w+://; # silently remove other directives
s/\s+$//; # right trim
}
# do the expanding
push @a,$ref->{$_} ? expand($ref,split /\s*,\s*/,$ref->{$_}):$_ foreach @_;
@a;
}
|