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authorJo-Philipp Wich <jow@openwrt.org>2009-08-03 22:19:51 +0000
committerJo-Philipp Wich <jow@openwrt.org>2009-08-03 22:19:51 +0000
commit498fe852f8c3c68f07b0308e0b9abb8c0cb1f3c5 (patch)
tree2bf2400cad2d3939514565f113c75f78d32457d3 /package/dropbear
parent25b42557da28fb6786653b854ca8b13a86c99ec1 (diff)
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dropbear: safely support remote restarting of dropbear process; bump pkg revision (#5498)
SVN-Revision: 17113
Diffstat (limited to 'package/dropbear')
-rw-r--r--package/dropbear/Makefile2
-rwxr-xr-xpackage/dropbear/files/dropbear.init138
2 files changed, 114 insertions, 26 deletions
diff --git a/package/dropbear/Makefile b/package/dropbear/Makefile
index 07df03c..290adde 100644
--- a/package/dropbear/Makefile
+++ b/package/dropbear/Makefile
@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
PKG_NAME:=dropbear
PKG_VERSION:=0.52
-PKG_RELEASE:=2
+PKG_RELEASE:=3
PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
PKG_SOURCE_URL:= \
diff --git a/package/dropbear/files/dropbear.init b/package/dropbear/files/dropbear.init
index aaa4470..c91d0a7 100755
--- a/package/dropbear/files/dropbear.init
+++ b/package/dropbear/files/dropbear.init
@@ -1,28 +1,52 @@
#!/bin/sh /etc/rc.common
-# Copyright (C) 2006 OpenWrt.org
-START=50
+# Copyright (C) 2006-2009 OpenWrt.org
# Copyright (C) 2006 Carlos Sobrinho
-config_cb() {
- local cfg="$CONFIG_SECTION"
+NAME=dropbear
+PROG=/usr/sbin/dropbear
+START=50
+PIDCOUNT=0
+EXTRA_COMMANDS="killclients"
+EXTRA_HELP=" killclients Kill ${NAME} processes except servers and yourself"
+
+dropbear_start()
+{
+ local section="$1"
+
+ # check if section is enabled (default)
+ local enabled
+ config_get_bool enabled "${section}" enable 1
+ [ "${enabled}" -eq 0 ] && return 1
+
+ # verbose parameter
+ local verbosed
+ config_get_bool verbosed "${section}" verbose 0
+
+ # increase pid file count to handle multiple instances correctly
+ PIDCOUNT="$(( ${PIDCOUNT} + 1))"
+
+ # prepare parameters
+ # A) password authentication
local nopasswd
- local cfgt
- config_get cfgt "$cfg" TYPE
-
- case "$cfgt" in
- dropbear)
- config_get passauth $cfg PasswordAuth
- config_get port $cfg Port
-
- case "$passauth" in
- no|off|disabled|0) nopasswd=1;;
- esac
- DROPBEAR_ARGS="${nopasswd:+-s }${port:+-p $port}"
- ;;
- esac
+ local passauth
+ config_get_bool passauth "${section}" PasswordAuth 1
+ [ "${passauth}" -eq 0 ] && nopasswd=1
+ # B) listen port
+ local port
+ config_get port "${section}" Port
+
+ # concatenate parameters
+ local args
+ args="${nopasswd:+-s }${port:+-p ${port}} -P /var/run/${NAME}.${PIDCOUNT}.pid"
+
+ # execute program and return its exit code
+ [ "${verbosed}" -ne 0 ] && echo "${initscript}: section ${section} starting ${PROG} ${args}"
+ ${PROG} ${args}
+ return $?
}
-keygen() {
+keygen()
+{
for keytype in rsa dss; do
# check for keys
key=dropbear/dropbear_${keytype}_host_key
@@ -44,14 +68,78 @@ keygen() {
chmod 0700 /etc/dropbear
}
-start() {
+start()
+{
[ -s /etc/dropbear/dropbear_rsa_host_key -a \
-s /etc/dropbear/dropbear_dss_host_key ] || keygen
-
- config_load dropbear
- /usr/sbin/dropbear $DROPBEAR_ARGS
+
+ config_load "${NAME}"
+ config_foreach dropbear_start dropbear
+}
+
+stop()
+{
+ # killing all server processes
+ local pidfile
+ for pidfile in `ls /var/run/${NAME}.*.pid`
+ do
+ start-stop-daemon -K -s KILL -p "${pidfile}" -n "${NAME}" >/dev/null
+ rm -f "${pidfile}"
+ done
+ [ -z "${pidfile}" ] && echo "${initscript}: no pid files, if you get problems with start then try killclients"
}
-stop() {
- killall 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"`
+ [ "${pid}" -eq 0 ] && break
+
+ # check if client connection
+ ps | grep -e "^[ ]*${pid} " | grep "${PROG}" >/dev/null
+ if [ $? -eq 0 ]
+ then
+ append ignore "${pid}"
+ break
+ fi
+ 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 "${NAME}"`
+ do
+ # check if correct program
+ ps | grep -e "^[ ]*${pid} " | grep "${PROG}" >/dev/null
+ [ $? -ne 0 ] && 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
}