1 #!/bin/sh /etc/rc.common
2 # Copyright (C) 2006-2010 OpenWrt.org
3 # Copyright (C) 2006 Carlos Sobrinho
11 PROG=/usr/sbin/dropbear
13 EXTRA_COMMANDS="killclients"
14 EXTRA_HELP=" killclients Kill ${NAME} processes except servers and yourself"
23 grep -qs "^ *$ifname:" /proc/net/dev || {
24 append args "-p $port"
29 ifconfig "$ifname" | sed -ne '
30 /addr: *fe[89ab][0-9a-f]:/d
31 s/.* addr: *\([0-9a-f:\.]*\).*/\1/p
34 append args "-p $addr:$port"
41 # check if section is enabled (default)
43 config_get_bool enabled "${section}" enable 1
44 [ "${enabled}" -eq 0 ] && return 1
48 config_get_bool verbosed "${section}" verbose 0
50 # increase pid file count to handle multiple instances correctly
51 PIDCOUNT="$(( ${PIDCOUNT} + 1))"
53 # prepare parameters (initialise with pid file)
54 local pid_file="/var/run/${NAME}.${PIDCOUNT}.pid"
55 local args="-P $pid_file"
57 # A) password authentication
58 config_get_bool val "${section}" PasswordAuth 1
59 [ "${val}" -eq 0 ] && append args "-s"
60 # B) listen interface and port
63 config_get interface "${section}" Interface
64 config_get interface "${interface}" ifname "$interface"
65 config_get port "${section}" Port 22
66 append_ports "$interface" "$port"
68 config_get val "${section}" BannerFile
69 [ -f "${val}" ] && append args "-b ${val}"
71 config_get_bool val "${section}" GatewayPorts 0
72 [ "${val}" -eq 1 ] && append args "-a"
73 # E) root password authentication
74 config_get_bool val "${section}" RootPasswordAuth 1
75 [ "${val}" -eq 0 ] && append args "-g"
77 config_get_bool val "${section}" RootLogin 1
78 [ "${val}" -eq 0 ] && append args "-w"
80 config_get val "${section}" rsakeyfile
81 [ -f "${val}" ] && append args "-r ${val}"
82 config_get val "${section}" dsskeyfile
83 [ -f "${val}" ] && append args "-d ${val}"
85 # execute program and return its exit code
86 [ "${verbosed}" -ne 0 ] && echo "${initscript}: section ${section} starting ${PROG} ${args}"
87 SERVICE_PID_FILE="$pid_file" service_start ${PROG} ${args}
92 for keytype in rsa dss; do
94 key=dropbear/dropbear_${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 "$initscript" start
105 lock /tmp/.switch2jffs
106 mkdir -p /etc/dropbear
107 mv /tmp/dropbear/dropbear_* /etc/dropbear/
108 lock -u /tmp/.switch2jffs
109 chown root /etc/dropbear
110 chmod 0700 /etc/dropbear
115 [ -s /etc/dropbear/dropbear_rsa_host_key -a \
116 -s /etc/dropbear/dropbear_dss_host_key ] || keygen
120 config_load "${NAME}"
121 config_foreach dropbear_start dropbear
126 local pid_file pid_files
128 pid_files=`ls /var/run/${NAME}.*.pid 2>/dev/null`
130 [ -z "$pid_files" ] && return 1
132 for pid_file in $pid_files; do
133 SERVICE_PID_FILE="$pid_file" service_stop ${PROG} && {
145 # if this script is run from inside a client session, then ignore that session
147 while [ "${pid}" -ne 0 ]
149 # get parent process id
150 pid=`cut -d ' ' -f 4 "/proc/${pid}/stat"`
151 [ "${pid}" -eq 0 ] && break
153 # check if client connection
154 grep -F -q -e "${PROG}" "/proc/${pid}/cmdline" && {
155 append ignore "${pid}"
160 # get all server pids that should be ignored
161 for server in `cat /var/run/${NAME}.*.pid`
163 append ignore "${server}"
166 # get all running pids and kill client connections
168 for pid in `pidof "${NAME}"`
170 # check if correct program, otherwise process next pid
171 grep -F -q -e "${PROG}" "/proc/${pid}/cmdline" || {
175 # check if pid should be ignored (servers, ourself)
177 for server in ${ignore}
179 if [ "${pid}" == "${server}" ]
185 [ "${skip}" -ne 0 ] && continue
188 echo "${initscript}: Killing ${pid}..."