1 #!/bin/sh /etc/rc.common
2 # Copyright (C) 2006-2010 OpenWrt.org
3 # Copyright (C) 2006 Carlos Sobrinho
6 PROG=/usr/sbin/dropbear
10 EXTRA_COMMANDS="killclients"
11 EXTRA_HELP=" killclients Kill ${NAME} processes except servers and yourself"
17 # check if section is enabled (default)
19 config_get_bool enabled "${section}" enable 1
20 [ "${enabled}" -eq 0 ] && return 1
24 config_get_bool verbosed "${section}" verbose 0
26 # increase pid file count to handle multiple instances correctly
27 PIDCOUNT="$(( ${PIDCOUNT} + 1))"
30 # A) password authentication
33 config_get_bool passauth "${section}" PasswordAuth 1
34 [ "${passauth}" -eq 0 ] && nopasswd=1
35 # B) listen interface and port
39 config_get port "${section}" Port
40 config_get interface "${section}" Interface
41 config_get address "${interface}" ipaddr
42 port="${address:+${address}:}${port}"
45 config_get bannerfile "${section}" BannerFile
46 [ -f "$bannerfile" ] || bannerfile=''
49 config_get_bool gatewayports "${section}" GatewayPorts 0
50 [ "${gatewayports}" -eq 1 ] || gatewayports=''
51 # E) root password authentication
54 config_get_bool rootpassauth "${section}" RootPasswordAuth 1
55 [ "${rootpassauth}" -eq 0 ] && norootpasswd=1
56 local rootloginallowed
58 config_get_bool rootloginallowed "${section}" RootLogin 1
59 [ "${rootloginallowed}" -eq 0 ] && norootlogin=1
60 # concatenate parameters
62 args="${nopasswd:+-s }${norootpasswd:+-g }${norootlogin:+-w }${port:+-p ${port} }${bannerfile:+-b $bannerfile }${gatewayports:+-a }-P /var/run/${NAME}.${PIDCOUNT}.pid"
64 # execute program and return its exit code
65 [ "${verbosed}" -ne 0 ] && echo "${initscript}: section ${section} starting ${PROG} ${args}"
72 for keytype in rsa dss; do
74 key=dropbear/dropbear_${keytype}_host_key
75 [ -f /tmp/$key -o -s /etc/$key ] || {
76 # generate missing keys
77 mkdir -p /tmp/dropbear
78 [ -x /usr/bin/dropbearkey ] && {
79 /usr/bin/dropbearkey -t $keytype -f /tmp/$key 2>&- >&- && exec /etc/rc.common "$initscript" start
85 lock /tmp/.switch2jffs
86 mkdir -p /etc/dropbear
87 mv /tmp/dropbear/dropbear_* /etc/dropbear/
88 lock -u /tmp/.switch2jffs
89 chown root /etc/dropbear
90 chmod 0700 /etc/dropbear
95 [ -s /etc/dropbear/dropbear_rsa_host_key -a \
96 -s /etc/dropbear/dropbear_dss_host_key ] || keygen
100 config_load "${NAME}"
101 config_foreach dropbear_start dropbear
106 # killing all server processes
108 for pidfile in `ls /var/run/${NAME}.*.pid`
110 start-stop-daemon -q -K -s KILL -p "${pidfile}" -n "${NAME}"
113 [ -z "${pidfile}" ] && echo "${initscript}: no pid files, if you get problems with start then try killclients"
122 # if this script is run from inside a client session, then ignore that session
124 while [ "${pid}" -ne 0 ]
126 # get parent process id
127 pid=`cut -d ' ' -f 4 "/proc/${pid}/stat"`
128 [ "${pid}" -eq 0 ] && break
130 # check if client connection
131 grep -F -q -e "${PROG}" "/proc/${pid}/cmdline" && {
132 append ignore "${pid}"
137 # get all server pids that should be ignored
138 for server in `cat /var/run/${NAME}.*.pid`
140 append ignore "${server}"
143 # get all running pids and kill client connections
145 for pid in `pidof "${NAME}"`
147 # check if correct program, otherwise process next pid
148 grep -F -q -e "${PROG}" "/proc/${pid}/cmdline" || {
152 # check if pid should be ignored (servers, ourself)
154 for server in ${ignore}
156 if [ "${pid}" == "${server}" ]
162 [ "${skip}" -ne 0 ] && continue
165 echo "${initscript}: Killing ${pid}..."