blob: c6f3d9ba82d51cbdc7790cb984d2e7aca1588038 (
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
|
#!/bin/sh /etc/rc.common
# Copyright (C) 2006-2010 OpenWrt.org
# Copyright (C) 2006 Carlos Sobrinho
START=50
STOP=50
USE_PROCD=1
PROG=/usr/sbin/dropbear
NAME=dropbear
PIDCOUNT=0
EXTRA_COMMANDS="killclients"
EXTRA_HELP=" killclients Kill ${NAME} processes except servers and yourself"
append_ports()
{
local ifname="$1"
local port="$2"
grep -qs "^ *$ifname:" /proc/net/dev || {
procd_append_param command -p "$port"
return
}
for addr in $(
ifconfig "$ifname" | sed -ne '
/addr: *fe[89ab][0-9a-f]:/d
s/.* addr: *\([0-9a-f:\.]*\).*/\1/p
'
); do
procd_append_param command -p "$addr:$port"
done
}
validate_section_dropbear()
{
uci_validate_section dropbear dropbear "${1}" \
'PasswordAuth:bool:1' \
'enable:bool:1' \
'Interface:string' \
'GatewayPorts:bool:0' \
'RootPasswordAuth:bool:1' \
'RootLogin:bool:1' \
'rsakeyfile:file' \
'dsskeyfile:file' \
'BannerFile:file' \
'Port:list(port):22' \
'SSHKeepAlive:uinteger:300' \
'IdleTimeout:uinteger:0'
}
dropbear_instance()
{
local PasswordAuth enable Interface GatewayPorts \
RootPasswordAuth RootLogin rsakeyfile \
dsskeyfile BannerFile Port SSHKeepAlive IdleTimeout
validate_section_dropbear "${1}" || {
echo "validation failed"
return 1
}
[ "${enable}" = "0" ] && return 1
PIDCOUNT="$(( ${PIDCOUNT} + 1))"
local pid_file="/var/run/${NAME}.${PIDCOUNT}.pid"
procd_open_instance
procd_set_param command "$PROG" -F -P "$pid_file"
[ "${PasswordAuth}" -eq 0 ] && procd_append_param command -s
[ "${GatewayPorts}" -eq 1 ] && procd_append_param command -a
[ "${RootPasswordAuth}" -eq 0 ] && procd_append_param command -g
[ "${RootLogin}" -eq 0 ] && procd_append_param command -w
[ -n "${rsakeyfile}" ] && procd_append_param command -r "${rsakeyfile}"
[ -n "${dsskeyfile}" ] && procd_append_param command -d "${dsskeyfile}"
[ -n "${BannerFile}" ] && procd_append_param command -b "${BannerFile}"
[ -n "${Interface}" ] && network_get_device Interface "${Interface}"
append_ports "${Interface}" "${Port}"
[ "${IdleTimeout}" -ne 0 ] && procd_append_param command -I "${IdleTimeout}"
[ "${SSHKeepAlive}" -ne 0 ] && procd_append_param command -K "${SSHKeepAlive}"
procd_close_instance
}
keygen()
{
for keytype in rsa dss; do
# check for keys
key=dropbear/dropbear_${keytype}_host_key
[ -f /tmp/$key -o -s /etc/$key ] || {
# generate missing keys
mkdir -p /tmp/dropbear
[ -x /usr/bin/dropbearkey ] && {
/usr/bin/dropbearkey -t $keytype -f /tmp/$key 2>&- >&- && exec /etc/rc.common "$initscript" start
} &
exit 0
}
done
lock /tmp/.switch2jffs
mkdir -p /etc/dropbear
mv /tmp/dropbear/dropbear_* /etc/dropbear/
lock -u /tmp/.switch2jffs
chown root /etc/dropbear
chmod 0700 /etc/dropbear
}
start_service()
{
[ -s /etc/dropbear/dropbear_rsa_host_key -a \
-s /etc/dropbear/dropbear_dss_host_key ] || keygen
. /lib/functions.sh
. /lib/functions/network.sh
config_load "${NAME}"
config_foreach dropbear_instance dropbear
}
service_triggers()
{
procd_add_reload_trigger "dropbear"
procd_add_validation validate_section_dropbear
}
killclients()
{
local ignore=''
local server
local pid
# if this script is run from inside a client session, then ignore that session
pid="$$"
while [ "${pid}" -ne 0 ]
do
# get parent process id
pid=`cut -d ' ' -f 4 "/proc/${pid}/stat"`
[ "${pid}" -eq 0 ] && break
# check if client connection
grep -F -q -e "${PROG}" "/proc/${pid}/cmdline" && {
append ignore "${pid}"
break
}
done
# get all server pids that should be ignored
for server in `cat /var/run/${NAME}.*.pid`
do
append ignore "${server}"
done
# get all running pids and kill client connections
local skip
for pid in `pidof "${NAME}"`
do
# check if correct program, otherwise process next pid
grep -F -q -e "${PROG}" "/proc/${pid}/cmdline" || {
continue
}
# check if pid should be ignored (servers, ourself)
skip=0
for server in ${ignore}
do
if [ "${pid}" == "${server}" ]
then
skip=1
break
fi
done
[ "${skip}" -ne 0 ] && continue
# kill process
echo "${initscript}: Killing ${pid}..."
kill -KILL ${pid}
done
}
|
