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
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
#!/usr/bin/perl
# This file is part of the Savane project
# <http://gna.org/projects/savane/>
#
# $Id$
#
# Copyright 2004-2005 (c) Loic Dachary <loic--gnu.org>
# Mathieu Roy <yeupou--gnu.org>
# Timothee Besset <ttimo--ttimo.net>
#
# The Savane project 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.
#
# The Savane project 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.
#
# You should have received a copy of the GNU General Public License
# along with the Savane project; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#
#
# Login shell for people who should only have limited access.
# You probably should add/modify the following option of your sshd_config
# like below (see sshd_config manual for more details):
# PermitEmptyPasswords no
# PasswordAuthentication no
# AllowTcpForwarding no
use strict;
$ENV{PATH}="/bin:/usr/bin";
$ENV{CVSEDITOR}="/bin/false";
# Import conf options
our $use_cvs = "0";
our $bin_cvs = "/usr/bin/cvs";
our $use_scp = "0";
our $bin_scp = "/usr/bin/scp";
our $regexp_scp = "^(scp .*-t /upload)|(scp .*-t /var/ftp)";
our $use_sftp = "0";
our $bin_sftp = "/usr/lib/sftp-server";
our $regexp_sftp = "^(/usr/lib/ssh/sftp-server|/usr/lib/sftp-server|/usr/libexec/sftp-server|/usr/lib/openssh/sftp-server)";
our $use_rsync = "0";
our $bin_rsync = "/usr/bin/rsync";
our $regexp_rsync = "^rsync --server";
our $regexp_dir_rsync = "^(/upload)|(/var/ftp)";
our $use_svn = "0";
our $bin_svn = "/usr/bin/svnserve";
our $regexp_svn = "^svnserve -t";
our @prepend_args_svn = ( '-r', '/svn' );
our $use_git = "0";
our $bin_git = "/usr/bin/git-shell";
our $use_pkgsubmit = "0";
our $regexp_pkgsubmit = "^/usr/share/repsys/create-srpm ";
our $bin_pkgsubmit = "/usr/share/repsys/create-srpm";
# Open configuration file
if (-e "/etc/membersh-conf.pl") {
do "/etc/membersh-conf.pl" or die "System misconfiguration, contact administrators. Exiting";
} else {
die "System misconfiguration, contact administrators. Exiting";
}
# A configuration file /etc/membersh-conf.pl must exists and be executable.
# Here come an example:
#
# $use_cvs = "1";
# $bin_cvs = "/usr/bin/cvs";
#
# $use_scp = "1";
# $bin_scp = "/usr/bin/scp";
# $regexp_scp = "^scp .*-t (/upload)|(/var/ftp)";
# $use_sftp = "1";
# $bin_sftp = "/usr/lib/sftp-server";
# $regexp_sftp = "^(/usr/lib/ssh/sftp-server|/usr/lib/sftp-server|/usr/libexec/sftp-server)";
#
# $use_rsync = "1";
# $bin_rsync = "/usr/bin/rsync";
# $regexp_rsync = "^rsync --server";
# $regexp_dir_rsync = "^(/upload)|(/var/ftp)";
#
# $use_pkgsubmit = "1";
if ($#ARGV == 1 and $ARGV[0] eq "-c") {
if ($use_cvs and $ARGV[1] eq 'cvs server') {
# Run a cvs server command
exec($bin_cvs, 'server') or die("Failed to exec $bin_cvs: $!");
} elsif ($use_scp and
$ARGV[1] =~ m:$regexp_scp:) {
# Authorize scp command
my (@args) = split(' ', $ARGV[1]);
shift(@args);
exec($bin_scp, @args);
} elsif ($use_sftp and
$ARGV[1] =~ m:$regexp_sftp:) {
# Authorize sftp login
exec($bin_sftp) or die("Failed to exec $bin_sftp: $!");
} elsif ($use_rsync and
$ARGV[1] =~ m:$regexp_rsync:) {
my ($rsync, @rest) = split(' ', $ARGV[1]);
my ($dir) = $rest[$#rest];
# Authorize rsync command, if the directory is acceptable
if ($dir =~ m:$regexp_dir_rsync:) {
exec($bin_rsync, @rest) or die("Failed to exec $bin_rsync: $!");
}
} elsif ($use_svn and
$ARGV[1] =~ m:$regexp_svn:) {
# authorize svnserve in tunnel mode, with the svn root prepended
my (@args) = @prepend_args_svn;
my (@args_user) = split(' ', $ARGV[1]);
shift( @args_user );
push( @args, @args_user );
exec($bin_svn, @args) or die("Failed to exec $bin_svn: $!");
} elsif ($use_git and $ARGV[1] =~ m:git-.+:) {
# Delegate filtering to git-shell
exec($bin_git, @ARGV) or die("Failed to exec $bin_git: $!");
} elsif ($use_pkgsubmit and
$ARGV[1] =~ m:$regexp_pkgsubmit:) {
my ($createsrpm, @rest) = split(' ', $ARGV[1]);
exec($bin_pkgsubmit, @rest) or die("Failed to exec $bin_pkgsubmit: $!");
}
}
unless (-e "/etc/membersh-errormsg") {
print STDERR "You tried to execute: @ARGV[1..$#ARGV]\n";
print STDERR "Sorry, you are not allowed to execute that command.\n";
} else {
open(ERRORMSG, "< /etc/membersh-errormsg");
while (<ERRORMSG>) {
print STDERR $_;
}
close(ERRORMSG);
}
exit(1);
|
