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
162
163
164
|
package network::shorewall; # $Id$
use detect_devices;
use network::netconnect;
use run_program;
use common;
use log;
my @drakgw_ports = qw(domain bootps http https 631 imap pop3 smtp nntp ntp);
# Ports for CUPS (631), LPD/LPRng (515), SMB (137, 138, 139)
my @internal_ports = qw(631 515 137 138 139);
sub check_iptables {
my ($in) = @_;
my $existing_config = -f "$::prefix/etc/sysconfig/iptables";
$existing_config ||= $::isStandalone && do {
system('modprobe iptable_nat');
-x '/sbin/iptables' && listlength(`/sbin/iptables -t nat -nL`) > 8;
};
!$existing_config || $in->ask_okcancel(N("Firewalling configuration detected!"),
N("Warning! An existing firewalling configuration has been detected. You may need some manual fixes after installation."));
}
sub set_config_file {
my ($file, @l) = @_;
my $done;
substInFile {
if (!$done && (/^#LAST LINE/ || eof)) {
$_ = join('', map { join("\t", @$_) . "\n" } @l) . $_;
$done = 1;
} else {
$_ = '' if /^[^#]/;
}
} "$::prefix/etc/shorewall/$file";
}
sub get_config_file {
my ($file) = @_;
map { [ split ' ' ] } grep { !/^#/ } cat_("$::prefix/etc/shorewall/$file");
}
sub default_interfaces_silent {
my ($_in) = @_;
my %conf;
my @l = detect_devices::getNet() or return;
if (@l == 1) {
$conf{net_interface} = $l[0];
} else {
$conf{net_interface} = network::netconnect::get_net_device() || $l[0];
$conf{loc_interface} = [ grep { $_ ne $conf{net_interface} } @l ];
}
\%conf;
}
sub default_interfaces {
my ($in) = @_;
my %conf;
my $card_netconnect = network::netconnect::get_net_device() || "eth0";
defined $card_netconnect and log::l("[drakgw] Information from netconnect: ignore card $card_netconnect");
my @l = detect_devices::getNet() or return;
$in->ask_from('',
N("Please enter the name of the interface connected to the internet.
Examples:
ppp+ for modem or DSL connections,
eth0, or eth1 for cable connection,
ippp+ for a isdn connection.
", $card_netconnect),
[ { label => N("Net Device"), val => \$card_netconnect, list => \@l } ]);
$conf{net_interface} = $card_netconnect;
#$conf{net_interface} = network::netconnect::get_net_device() || $l[0];
$conf{loc_interface} = [ grep { $_ ne $conf{net_interface} } @l ];
\%conf;
}
sub read {
my ($in, $mode) = @_;
my %conf = (disabled => !glob_("$::prefix/etc/rc3.d/S*shorewall"),
ports => join(' ', map {
my $e = $_;
map { "$_/$e->[3]" } split(',', $e->[4]);
} grep { $_->[0] eq 'ACCEPT' && $_->[1] eq 'net' } get_config_file('rules'))
);
if (my ($e) = get_config_file('masq')) {
$conf{masquerade}{subnet} = $e->[1] if $e->[1];
}
if ($mode eq 'silent') {
put_in_hash(\%conf, default_interfaces_silent($in), @l . 2);
} else {
put_in_hash(\%conf, default_interfaces($in));
};
foreach (get_config_file('interfaces')) {
my ($name, $interface) = @$_;
if ($name eq 'masq') {
$conf{masquerade}{interface} = $interface;
$conf{loc_interface} = [ difference2($conf{loc_interface}, [$interface]) ];
}
}
$conf{net_interface} && \%conf;
}
sub write {
my ($conf) = @_;
my $connect_file = "/etc/sysconfig/network-scripts/net_cnx_up";
my %ports_by_proto;
foreach (split ' ', $conf->{ports}) {
m!^(\d+)/(udp|tcp)$! or die "bad port $_\n";
push @{$ports_by_proto{$2}}, $1;
}
set_config_file("zones",
[ 'net', 'Net', 'Internet zone' ],
if_($conf->{masquerade}, [ 'masq', 'Masquerade', 'Masquerade Local' ]),
if_($conf->{loc_interface}, [ 'loc', 'Local', 'Local' ]),
);
set_config_file('interfaces',
[ 'net', $conf->{net_interface}, 'detect' ],
$conf->{masquerade} ? [ 'masq', $conf->{masquerade}{interface}, 'detect' ] : (),
(map { [ 'loc', $_, 'detect' ] } @{$conf->{loc_interface} || []}),
);
set_config_file('policy',
if_($conf->{masquerade}, [ 'masq', 'net', 'ACCEPT' ]),
if_($conf->{loc_interface}, [ 'loc', 'net', 'ACCEPT' ]),
[ 'fw', 'net', 'ACCEPT' ],
[ 'net', 'all', 'DROP', 'info' ],
[ 'all', 'all', 'REJECT', 'info' ],
);
set_config_file('rules',
if_(cat_("$::prefix$connect_file") =~ /pptp/, [ 'ACCEPT', 'fw', 'loc:10.0.0.138', 'tcp', '1723' ]),
if_(cat_("$::prefix$connect_file") =~ /pptp/, [ 'ACCEPT', 'fw', 'loc:10.0.0.138', 'gre' ]),
(map {
map_each { [ 'ACCEPT', $_, 'fw', $::a, join(',', @$::b), '-' ] } %ports_by_proto
} ('net', if_($conf->{masquerade}, 'masq'), if_($conf->{loc_interface}, 'loc'))),
if_($conf->{masquerade}, map { [ 'ACCEPT', 'masq', 'fw', $_, join(',', @drakgw_ports), '-' ] } 'tcp', 'udp'),
if_($conf->{masquerade}, map { [ 'ACCEPT', 'fw', 'masq', $_, join(',', @internal_ports), '-' ] } 'tcp', 'udp'),
);
set_config_file('masq',
$conf->{masquerade} ? [ $conf->{net_interface}, $conf->{masquerade}{subnet} ] : (),
);
system('uniq /etc/shorewall/masq > /etc/shorewall/masq.uniq');
rename("/etc/shorewall/masq.uniq", "/etc/shorewall/masq");
if ($conf->{disabled}) {
run_program::rooted($::prefix, 'chkconfig', '--del', 'shorewall');
run_program::run('service', '>', '/dev/null', 'shorewall', 'stop') if $::isStandalone;
run_program::run('service', '>', '/dev/null', 'shorewall', 'clear') if $::isStandalone;
} else {
run_program::rooted($::prefix, 'chkconfig', '--add', 'shorewall');
run_program::run('service', '>', '/dev/null', 'shorewall', 'restart') if $::isStandalone;
}
}
1;
|
