STOP=50
USE_PROCD=1
-
-NAME=dropbear
PROG=/usr/sbin/dropbear
+NAME=dropbear
PIDCOUNT=0
EXTRA_COMMANDS="killclients"
EXTRA_HELP=" killclients Kill ${NAME} processes except servers and yourself"
-dropbear_instance()
+append_ports()
{
- append_ports()
- {
- local ifname="$1"
- local port="$2"
-
- grep -qs "^ *$ifname:" /proc/net/dev || {
- procd_append_param command -p "$port"
- return
- }
+ local ipaddrs="$1"
+ local port="$2"
- 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
+ [ -z "$ipaddrs" ] && {
+ procd_append_param command -p "$port"
+ return
}
+ for addr in $ipaddrs; do
+ procd_append_param command -p "$addr:$port"
+ done
+}
- local section="$1"
+validate_section_dropbear()
+{
+ uci_validate_section dropbear dropbear "${1}" \
+ 'PasswordAuth:bool:1' \
+ 'enable:bool:1' \
+ 'Interface:string' \
+ 'GatewayPorts:bool:0' \
+ 'RootPasswordAuth:bool:1' \
+ 'RootLogin:bool:1' \
+ 'rsakeyfile:file' \
+ 'BannerFile:file' \
+ 'Port:list(port):22' \
+ 'SSHKeepAlive:uinteger:300' \
+ 'IdleTimeout:uinteger:0' \
+ 'mdns:uinteger:1'
+}
- # check if section is enabled (default)
- local enabled
- config_get_bool enabled "${section}" enable 1
- [ "${enabled}" -eq 0 ] && return 1
+dropbear_instance()
+{
+ local PasswordAuth enable Interface GatewayPorts \
+ RootPasswordAuth RootLogin rsakeyfile \
+ BannerFile Port SSHKeepAlive IdleTimeout \
+ mdns ipaddrs
+
+ validate_section_dropbear "${1}" || {
+ echo "validation failed"
+ return 1
+ }
- # increase pid file count to handle multiple instances correctly
- PIDCOUNT="$(( ${PIDCOUNT} + 1))"
+ [ -n "${Interface}" ] && {
+ network_get_ipaddrs_all ipaddrs "${Interface}" || {
+ echo "interface ${Interface} has no physdev or physdev has no suitable ip"
+ return 1
+ }
+ }
+ [ "${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 "$pid_file"
-
- # prepare parameters (initialise with pid file)
- local val
-
- # A) password authentication
- config_get_bool val "${section}" PasswordAuth 1
- [ "${val}" -eq 0 ] && procd_append_param command -s
-
- # B) listen interface and port
- local port
- local interface
- config_get interface "${section}" Interface
- [ -n "$interface" ] && network_get_device interface "$interface"
- config_get port "${section}" Port 22
- append_ports "$interface" "$port"
- # C) banner file
- config_get val "${section}" BannerFile
- [ -f "${val}" ] && procd_append_param command -b "${val}"
- # D) gatewayports
- config_get_bool val "${section}" GatewayPorts 0
- [ "${val}" -eq 1 ] && procd_append_param command -a
- # E) root password authentication
- config_get_bool val "${section}" RootPasswordAuth 1
- [ "${val}" -eq 0 ] && procd_append_param command -g
- # F) root login
- config_get_bool val "${section}" RootLogin 1
- [ "${val}" -eq 0 ] && procd_append_param command -w
- # G) host keys
- config_get val "${section}" rsakeyfile
- [ -f "${val}" ] && procd_append_param command -r "${val}"
- config_get val "${section}" dsskeyfile
- [ -f "${val}" ] && procd_append_param command -d "${val}"
-
+ [ "${PasswordAuth}" -eq 0 ] && procd_append_param command -s
+ [ "${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 "${BannerFile}" ] && procd_append_param command -b "${BannerFile}"
+ append_ports "${ipaddrs}" "${Port}"
+ [ "${IdleTimeout}" -ne 0 ] && procd_append_param command -I "${IdleTimeout}"
+ [ "${SSHKeepAlive}" -ne 0 ] && procd_append_param command -K "${SSHKeepAlive}"
+ [ "${mdns}" -ne 0 ] && procd_add_mdns "ssh" "tcp" "$Port" "daemon=dropbear"
+ procd_set_param respawn
procd_close_instance
}
keygen()
{
- for keytype in rsa dss; do
+ for keytype in rsa; do
# check for keys
key=dropbear/dropbear_${keytype}_host_key
[ -f /tmp/$key -o -s /etc/$key ] || {
chmod 0700 /etc/dropbear
}
+load_interfaces()
+{
+ config_get interface "$1" Interface
+ interfaces=" ${interface} ${interfaces}"
+}
+
start_service()
{
- [ -s /etc/dropbear/dropbear_rsa_host_key -a \
- -s /etc/dropbear/dropbear_dss_host_key ] || keygen
+ [ -s /etc/dropbear/dropbear_rsa_host_key ] || keygen
. /lib/functions.sh
. /lib/functions/network.sh
config_foreach dropbear_instance dropbear
}
+service_triggers()
+{
+ local interfaces
+
+ procd_open_trigger
+ procd_add_config_trigger "config.change" "dropbear" /etc/init.d/dropbear reload
+
+ config_load "${NAME}"
+ config_foreach load_interfaces dropbear
+
+ [ -n "${interfaces}" ] & {
+ for n in $interfaces ; do
+ procd_add_interface_trigger "interface.*" $n /etc/init.d/dropbear reload
+ done
+ }
+ procd_close_trigger
+
+ procd_add_validation validate_section_dropbear
+}
+
killclients()
{
local ignore=''
skip=0
for server in ${ignore}
do
- if [ "${pid}" == "${server}" ]
+ if [ "${pid}" = "${server}" ]
then
skip=1
break