blob: aaf3d14ef02f52769f5231737b5cb1798a16f28c (
plain)
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
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
# Copyright (C) 2009-2010 OpenWrt.org
# Copyright (C) 2009 Malte S. Stretz
export FW_4_ERROR=0
export FW_6_ERROR=0
export FW_i_ERROR=0
export FW_e_ERROR=0
export FW_a_ERROR=0
#TODO: remove this
[ "${-#*x}" == "$-" ] && {
fw() {
fw__exec "$@"
}
} || {
fw() {
local os=$-
set +x
fw__exec "$@"
local rc=$?
set -$os
return $rc
}
}
fw__exec() { # <action> <family> <table> <chain> <target> <position> { <rules> }
local cmd fam tab chn tgt pos
local i
for i in cmd fam tab chn tgt pos; do
if [ "$1" -a "$1" != '{' ]; then
eval "$i='$1'"
shift
else
eval "$i=-"
fi
done
fw__rc() {
export FW_${fam#G}_ERROR=$1
return $1
}
fw__dualip() {
fw $cmd 4 $tab $chn $tgt $pos "$@"
fw $cmd 6 $tab $chn $tgt $pos "$@"
fw__rc $((FW_4_ERROR | FW_6_ERROR))
}
fw__autoip() {
local ip4 ip6
shift
while [ "$1" != '}' ]; do
case "$1" in
*:*) ip6=1 ;;
*.*.*.*) ip4=1 ;;
esac
shift
done
shift
if [ "${ip4:-4}" == "${ip6:-6}" ]; then
echo "fw: can't mix ip4 and ip6" >&2
return 1
fi
local ver=${ip4:+4}${ip6:+6}
fam=i
fw $cmd ${ver:-i} $tab $chn $tgt $pos "$@"
fw__rc $?
}
fw__has() {
local tab=${1:-$tab}
if [ $tab == '-' ]; then
type $app > /dev/null 2> /dev/null
fw__rc $(($? & 1))
return
fi
local mod
eval "mod=\$FW_${fam#G}_${tab}"
if [ "$mod" ]; then
fw__rc $mod
return
fi
case "$fam" in
*4) mod=iptable_${tab} ;;
*6) mod=ip6table_${tab} ;;
*) mod=. ;;
esac
grep -q "^${mod} " /proc/modules
mod=$?
export FW_${fam}_${tab}=$mod
fw__rc $mod
}
fw__err() {
local err
eval "err=\$FW_${fam}_ERROR"
fw__rc $err
}
local app=
local pol=
case "$fam" in
*4) [ $FW_DISABLE_IPV4 == 0 ] && app=iptables || return ;;
*6) [ $FW_DISABLE_IPV6 == 0 ] && app=ip6tables || return ;;
i) fw__dualip "$@"; return ;;
I) fw__autoip "$@"; return ;;
e) app=ebtables ;;
a) app=arptables ;;
-) fw $cmd i $tab $chn $tgt $pos "$@"; return ;;
*) return 254 ;;
esac
case "$tab" in
f) tab=filter ;;
m) tab=mangle ;;
n) tab=nat ;;
r) tab=raw ;;
-) tab=filter ;;
esac
case "$cmd:$chn:$tgt:$pos" in
add:*:-:*) cmd=new-chain ;;
add:*:*:-) cmd=append ;;
add:*:*:$) cmd=append ;;
add:*:*:*) cmd=insert ;;
del:-:*:*) cmd=delete-chain; fw flush $fam $tab ;;
del:*:-:*) cmd=delete-chain; fw flush $fam $tab $chn ;;
del:*:*:*) cmd=delete ;;
flush:*) ;;
policy:*) pol=$tgt; tgt=- ;;
has:*) fw__has; return ;;
err:*) fw__err; return ;;
list:*) cmd="numeric --verbose --$cmd" ;;
*) return 254 ;;
esac
case "$chn" in
-) chn= ;;
esac
case "$tgt" in
-) tgt= ;;
esac
case "$pos" in
^) pos=1 ;;
$) pos= ;;
-) pos= ;;
esac
if ! fw__has - family || ! fw__has $tab ; then
export FW_${fam}_ERROR=0
return 0
fi
case "$fam" in
G*) shift; while [ $# -gt 0 ] && [ "$1" != "{" ]; do shift; done ;;
esac
if [ $# -gt 0 ]; then
shift
if [ $cmd == delete ]; then
pos=
fi
fi
while [ $# -gt 1 ]; do
case "$app:$1" in
ip6tables:--icmp-type) echo -n "--icmpv6-type" ;;
ip6tables:icmp|ip6tables:ICMP) echo -n "icmpv6" ;;
iptables:--icmpv6-type) echo -n "--icmp-type" ;;
iptables:icmpv6) echo -n "icmp" ;;
*) echo -n "$1" ;;
esac
echo -ne "\0"
shift
done | xargs -0 ${FW_TRACE:+-t} \
$app --table ${tab} --${cmd} ${chn} ${pol} ${pos} ${tgt:+--jump "$tgt"}
fw__rc $?
}
fw_get_port_range() {
local ports=$1
local delim=${2:-:}
if [ "$3" ]; then
fw_get_port_range "${ports}-${3}" $delim
return
fi
local first=${ports%-*}
local last=${ports#*-}
if [ "$first" != "$last" ]; then
echo "$first$delim$last"
else
echo "$first"
fi
}
fw_get_family_mode() {
local hint="$1"
local zone="$2"
local mode="$3"
local ipv4 ipv6
[ -n "$FW_ZONES4$FW_ZONES6" ] && {
list_contains FW_ZONES4 $zone && ipv4=1 || ipv4=0
list_contains FW_ZONES6 $zone && ipv6=1 || ipv6=0
} || {
ipv4=$(uci_get_state firewall core ${zone}_ipv4 0)
ipv6=$(uci_get_state firewall core ${zone}_ipv6 0)
}
case "$hint:$ipv4:$ipv6" in
*4:1:*|*:1:0) echo G4 ;;
*6:*:1|*:0:1) echo G6 ;;
*) echo $mode ;;
esac
}
|
