dropbear: use network_get_device instead of scan_interfaces to get the device name
[openwrt/svn-archive/archive.git] / package / network / services / dropbear / files / dropbear.init
1 #!/bin/sh /etc/rc.common
2 # Copyright (C) 2006-2010 OpenWrt.org
3 # Copyright (C) 2006 Carlos Sobrinho
4
5 START=50
6 STOP=50
7
8 SERVICE_USE_PID=1
9
10 NAME=dropbear
11 PROG=/usr/sbin/dropbear
12 PIDCOUNT=0
13 EXTRA_COMMANDS="killclients"
14 EXTRA_HELP=" killclients Kill ${NAME} processes except servers and yourself"
15
16 dropbear_start()
17 {
18 append_ports()
19 {
20 local ifname="$1"
21 local port="$2"
22
23 grep -qs "^ *$ifname:" /proc/net/dev || {
24 append args "-p $port"
25 return
26 }
27
28 for addr in $(
29 ifconfig "$ifname" | sed -ne '
30 /addr: *fe[89ab][0-9a-f]:/d
31 s/.* addr: *\([0-9a-f:\.]*\).*/\1/p
32 '
33 ); do
34 append args "-p $addr:$port"
35 done
36 }
37
38
39 local section="$1"
40
41 # check if section is enabled (default)
42 local enabled
43 config_get_bool enabled "${section}" enable 1
44 [ "${enabled}" -eq 0 ] && return 1
45
46 # verbose parameter
47 local verbosed
48 config_get_bool verbosed "${section}" verbose 0
49
50 # increase pid file count to handle multiple instances correctly
51 PIDCOUNT="$(( ${PIDCOUNT} + 1))"
52
53 # prepare parameters (initialise with pid file)
54 local pid_file="/var/run/${NAME}.${PIDCOUNT}.pid"
55 local args="-P $pid_file"
56 local val
57 # A) password authentication
58 config_get_bool val "${section}" PasswordAuth 1
59 [ "${val}" -eq 0 ] && append args "-s"
60 # B) listen interface and port
61 local port
62 local interface
63 config_get interface "${section}" Interface
64 [ -n "$interface" ] && network_get_device interface "$interface"
65 config_get port "${section}" Port 22
66 append_ports "$interface" "$port"
67 # C) banner file
68 config_get val "${section}" BannerFile
69 [ -f "${val}" ] && append args "-b ${val}"
70 # D) gatewayports
71 config_get_bool val "${section}" GatewayPorts 0
72 [ "${val}" -eq 1 ] && append args "-a"
73 # E) root password authentication
74 config_get_bool val "${section}" RootPasswordAuth 1
75 [ "${val}" -eq 0 ] && append args "-g"
76 # F) root login
77 config_get_bool val "${section}" RootLogin 1
78 [ "${val}" -eq 0 ] && append args "-w"
79 # G) host keys
80 config_get val "${section}" rsakeyfile
81 [ -f "${val}" ] && append args "-r ${val}"
82 config_get val "${section}" dsskeyfile
83 [ -f "${val}" ] && append args "-d ${val}"
84
85 # execute program and return its exit code
86 [ "${verbosed}" -ne 0 ] && echo "${initscript}: section ${section} starting ${PROG} ${args}"
87 SERVICE_PID_FILE="$pid_file" service_start ${PROG} ${args}
88 }
89
90 keygen()
91 {
92 for keytype in rsa dss; do
93 # check for keys
94 key=dropbear/dropbear_${keytype}_host_key
95 [ -f /tmp/$key -o -s /etc/$key ] || {
96 # generate missing keys
97 mkdir -p /tmp/dropbear
98 [ -x /usr/bin/dropbearkey ] && {
99 /usr/bin/dropbearkey -t $keytype -f /tmp/$key 2>&- >&- && exec /etc/rc.common "$initscript" start
100 } &
101 exit 0
102 }
103 done
104
105 lock /tmp/.switch2jffs
106 mkdir -p /etc/dropbear
107 mv /tmp/dropbear/dropbear_* /etc/dropbear/
108 lock -u /tmp/.switch2jffs
109 chown root /etc/dropbear
110 chmod 0700 /etc/dropbear
111 }
112
113 start()
114 {
115 [ -s /etc/dropbear/dropbear_rsa_host_key -a \
116 -s /etc/dropbear/dropbear_dss_host_key ] || keygen
117
118 . /lib/functions.sh
119 . /lib/functions/network.sh
120
121 config_load "${NAME}"
122 config_foreach dropbear_start dropbear
123 }
124
125 stop()
126 {
127 local pid_file pid_files
128
129 pid_files=`ls /var/run/${NAME}.*.pid 2>/dev/null`
130
131 [ -z "$pid_files" ] && return 1
132
133 for pid_file in $pid_files; do
134 SERVICE_PID_FILE="$pid_file" service_stop ${PROG} && {
135 rm -f ${pid_file}
136 }
137 done
138 }
139
140 killclients()
141 {
142 local ignore=''
143 local server
144 local pid
145
146 # if this script is run from inside a client session, then ignore that session
147 pid="$$"
148 while [ "${pid}" -ne 0 ]
149 do
150 # get parent process id
151 pid=`cut -d ' ' -f 4 "/proc/${pid}/stat"`
152 [ "${pid}" -eq 0 ] && break
153
154 # check if client connection
155 grep -F -q -e "${PROG}" "/proc/${pid}/cmdline" && {
156 append ignore "${pid}"
157 break
158 }
159 done
160
161 # get all server pids that should be ignored
162 for server in `cat /var/run/${NAME}.*.pid`
163 do
164 append ignore "${server}"
165 done
166
167 # get all running pids and kill client connections
168 local skip
169 for pid in `pidof "${NAME}"`
170 do
171 # check if correct program, otherwise process next pid
172 grep -F -q -e "${PROG}" "/proc/${pid}/cmdline" || {
173 continue
174 }
175
176 # check if pid should be ignored (servers, ourself)
177 skip=0
178 for server in ${ignore}
179 do
180 if [ "${pid}" == "${server}" ]
181 then
182 skip=1
183 break
184 fi
185 done
186 [ "${skip}" -ne 0 ] && continue
187
188 # kill process
189 echo "${initscript}: Killing ${pid}..."
190 kill -KILL ${pid}
191 done
192 }