617 lines
16 KiB
Bash
Executable File
617 lines
16 KiB
Bash
Executable File
#!/bin/sh
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#
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# bkctld is a shell script to create and manage a backup server which will
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# handle the backup of many servers (clients).
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#
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# Author: Victor Laborie <vlaborie@evolix.fr>
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# Contributor: Benoît Série <bserie@evolix.fr>, Gregory Colpart <reg@evolix.fr>, Romain Dessort <rdessort@evolix.fr>, Tristan Pilat <tpilat@evolix.fr>
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# Licence: AGPLv3
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#
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usage(){
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echo "Usage: $0 <subcommand> [options]"
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echo "Subcommands:"
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echo " init <jailname> Init jail <jailname>"
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echo " update <jailname>|all Update jail <jailname> or all"
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echo " remove <jailname>|all Remove jail <jailname> or all"
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echo " start <jailname>|all Start jail <jailname> or all"
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echo " stop <jailname>|all Stop jail <jailname> or all"
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echo " reload <jailname>|all Reload jail <jailname> or all"
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echo " restart <jailname>|all Restart jail <jailname> or all"
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echo " sync <jailname>|all Sync jail <jailname> or all to another node"
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echo " status [<jailname>] Print status of <jailname> (default all jail)"
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echo " key <jailname> [<keyfile>] Set or get ssh pubic key of <jailname>"
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echo " port <jailname> [<ssh_port>|auto] Set or get ssh port of <jailname>"
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echo " ip <jailname> [<ip>|all] Set or get allowed(s) ip(s) of <jailname>"
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echo " inc Make incremental inc of all jails"
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echo " rm Remove old incremtal inc of all jails"
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echo ""
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}
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## check functions
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check_jail() {
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jail=$1
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if [ -d ${JAILDIR}/${jail} ]; then
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exit 0
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else
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exit 1
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fi
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}
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check_jail_on() {
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jail=$1
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return=1
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if [ -f ${JAILDIR}/${jail}/${SSHD_PID} ]; then
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pid=$(cat ${JAILDIR}/${jail}/${SSHD_PID})
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ps -p $pid > /dev/null && return=0
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fi
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if [ "$return" -eq 1 ]; then
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rm -f ${JAILDIR}/${jail}/${SSHD_PID}
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grep -q "${JAILDIR}/${jail}/proc" /proc/mounts && umount --lazy ${JAILDIR}/${jail}/proc/
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grep -q "${JAILDIR}/${jail}/dev" /proc/mounts && umount --lazy --recursive ${JAILDIR}/${jail}/dev
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fi
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exit "$return"
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}
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## get functions : get info on jail
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get_port() {
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jail=$1
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port=$(grep -E "Port [0-9]+" ${JAILDIR}/${jail}/${SSHD_CONFIG}|grep -oE "[0-9]+")
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echo $port
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}
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get_key() {
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jail=$1
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if [ -f ${JAILDIR}/${jail}/${AUTHORIZED_KEYS} ]; then
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cat ${JAILDIR}/${jail}/${AUTHORIZED_KEYS}
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fi
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}
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get_ip() {
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jail=$1
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grep -E "^AllowUsers" "${JAILDIR}/$jail/${SSHD_CONFIG}"|grep -Eo "root@[^ ]+"| while read allow; do
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echo "$allow"|cut -d'@' -f2
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done
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}
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get_inc() {
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jail=$1
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inc="0"
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if [ -f ${CONFDIR}/${jail} ]; then
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day=$(grep -c "day" ${CONFDIR}/${jail})
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month=$(grep -c "month" ${CONFDIR}/${jail})
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inc="${day}/${month}"
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fi
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echo $inc
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}
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## set functions : set info on jail
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set_port() {
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jail=$1
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port=$2
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if [ "$port" = "auto" ]; then
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port=$(grep -h Port ${JAILDIR}/*/${SSHD_CONFIG} 2>/dev/null | grep -Eo "[0-9]+" | sort -n | tail -1)
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port=$((port+1))
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if [ ! $port -gt 1 ]; then
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port=2222
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fi
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fi
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sed -i "s/^Port .*/Port ${port}/" ${JAILDIR}/$jail/${SSHD_CONFIG}
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set_firewall $jail
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}
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set_key() {
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jail=$1
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keyfile=$2
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if [ -e $keyfile ]; then
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cat $keyfile > ${JAILDIR}/${jail}/${AUTHORIZED_KEYS}
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chmod 600 ${JAILDIR}/${jail}/${AUTHORIZED_KEYS}
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else
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echo "Keyfile $keyfile dosen't exist !" >&2
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exit 1
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fi
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}
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set_ip() {
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jail=$1
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ip=$2
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if [ "$ip" = "all" ] || [ "$ip" = "0.0.0.0/0" ]; then
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ips="0.0.0.0/0"
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else
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ips=$(get_ip $jail)
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ips=$(echo $ips $ip|xargs -n1|grep -v "0.0.0.0/0"|sort|uniq)
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fi
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allow="AllowUsers"
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for ip in $ips; do
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allow="$allow root@${ip}"
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done
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sed -i "s~^AllowUsers .*~${allow}~" ${JAILDIR}/$jail/${SSHD_CONFIG}
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set_firewall $jail
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}
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set_firewall() {
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jail=$1
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if [ -n "${FIREWALL_RULES}" ]; then
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if [ -f $FIREWALL_RULES ]; then
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sed -i "/#${jail}$/d" $FIREWALL_RULES
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fi
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if ( check_jail $jail ); then
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port=$(get_port $jail)
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for ip in $(get_ip $jail); do
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echo "/sbin/iptables -A INPUT -p tcp --sport 1024: --dport $port -s $ip -j ACCEPT #$jail" >> $FIREWALL_RULES
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done
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if [ -f /etc/init.d/minifirewall ]; then
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/etc/init.d/minifirewall restart >/dev/null
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fi
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fi
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fi
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}
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## mk_jail function : create or update a jail
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mk_jail() {
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jail=$1
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passwd="${TPLDIR}/passwd"
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shadow="${TPLDIR}/shadow"
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group="${TPLDIR}/group"
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sshrc="${TPLDIR}/sshrc"
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[ -f "${LOCALTPLDIR}/passwd" ] && passwd="${LOCALTPLDIR}/passwd"
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[ -f "${LOCALTPLDIR}/shadow" ] && shadow="${LOCALTPLDIR}/shadow"
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[ -f "${LOCALTPLDIR}/group" ] && group="${LOCALTPLDIR}/group"
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[ -f "${LOCALTPLDIR}/sshrc" ] && group="${LOCALTPLDIR}/sshrc"
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umask 077
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echo "1 - Creating the chroot"
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cd "${JAILDIR}/${jail}"
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rm -rf bin lib lib64 run usr var/run etc/ssh/*key
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mkdir -p dev proc
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mkdir -p usr/bin usr/sbin usr/lib usr/lib/x86_64-linux-gnu usr/lib/openssh usr/lib64
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mkdir -p etc/ssh var/log run/sshd
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mkdir -p root/.ssh var/backup -m 0700
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ln -s usr/bin bin
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ln -s usr/lib lib
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ln -s usr/lib64 lib64
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ln -st var ../run
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touch var/log/lastlog var/log/wtmp run/utmp
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echo "2 - Copying essential files"
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[ -f /etc/ssh/ssh_host_rsa_key ] && cp /etc/ssh/ssh_host_rsa_key etc/ssh
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[ -f /etc/ssh/ssh_host_ecdsa_key ] && cp /etc/ssh/ssh_host_ecdsa_key etc/ssh
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[ -f /etc/ssh/ssh_host_ed25519_key ] && cp /etc/ssh/ssh_host_ed25519_key etc/ssh
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cp "$passwd" etc
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cp "$shadow" etc
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cp "$group" etc
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cp "$sshrc" etc/ssh
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echo "3 - Copying binaries"
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cp -f /lib/ld-linux.so.2 lib 2>/dev/null || cp -f /lib64/ld-linux-x86-64.so.2 lib64
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cp /lib/x86_64-linux-gnu/libnss* lib/x86_64-linux-gnu
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for dbin in /bin/sh /bin/ls /bin/mkdir /bin/cat /bin/rm /bin/sed /usr/bin/rsync /usr/bin/lastlog /usr/bin/touch /usr/sbin/sshd /usr/lib/openssh/sftp-server; do
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cp -f $dbin ${JAILDIR}/${jail}/$dbin;
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for lib in $(ldd $dbin | grep -Eo "/.*so.[0-9\.]+"); do
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cp -p $lib ${JAILDIR}/${jail}/$lib
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done
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done
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}
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## sub functions : functions call by subcommand
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sub_init() {
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jail=$1
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sshd_config="${TPLDIR}/sshd_config"
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inctpl="${TPLDIR}/inc.tpl"
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[ -f "${LOCALTPLDIR}/sshd_config" ] && sshd_config="${LOCALTPLDIR}/sshd_config"
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[ -f "${LOCALTPLDIR}/inc.tpl" ] && inctpl="${LOCALTPLDIR}/inc.tpl"
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if ( check_jail $jail ); then
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echo "Jail $jail already exist ! Use '$0 update $jail' for update it" >&2
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exit 1
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fi
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echo "Create jail $jail :"
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rootdir=$(dirname "$JAILDIR")
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rootdir_inode=$(stat --format=%i "$rootdir")
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jaildir_inode=$(stat --format=%i $JAILDIR)
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if [ "$rootdir_inode" -eq 256 ] || [ "$jaildir_inode" -eq 256 ]; then
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$BTRFS subvolume create ${JAILDIR}/${jail}
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else
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mkdir -p ${JAILDIR}/${jail}
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fi
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mk_jail $jail
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echo "4 - Copie default sshd_config"
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install -m 0640 $sshd_config ${JAILDIR}/$jail/${SSHD_CONFIG}
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echo "5 - Set usable sshd port"
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set_port $jail auto
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echo "6 - Copie default inc configuration"
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install -m 0640 $inctpl ${CONFDIR}/$jail
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}
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sub_update() {
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jail=$1
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if ! ( check_jail $jail ); then
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echo "Jail $jail doesn't exist ! Use '$0 init $jail' for create it !" >&2
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exit 1
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fi
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status=$(check_jail_on $jail)
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if ( $status ); then
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log stop $jail
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fi
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echo "Update jail $jail :"
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mk_jail $jail
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if ( $status ); then
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log start $jail
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fi
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}
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sub_remove() {
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jail=$1
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if ! ( check_jail $jail ); then
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echo "Jail $jail doesn't exist !" >&2
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exit 1
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fi
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if ( check_jail_on $jail ); then
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log stop $jail
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fi
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echo "Delete jail $jail"
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rm -f ${CONFDIR}/${jail}
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jail_inode=$(stat --format=%i ${JAILDIR}/${jail})
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if [ "$jail_inode" -eq 256 ]; then
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$BTRFS subvolume delete ${JAILDIR}/${jail}
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else
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rm -rf ${JAILDIR}/${jail}
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fi
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if [ -d ${INCDIR}/${jail} ]; then
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incs=$(ls ${INCDIR}/${jail})
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for inc in $incs; do
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inc_inode=$(stat --format=%i ${INCDIR}/${jail}/$inc)
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if [ "$inc_inode" -eq 256 ]; then
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$BTRFS subvolume delete ${INCDIR}/${jail}/${inc}
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else
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echo "You need to purge ${INCDIR}/${jail}/$inc manually !" >&2
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fi
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done
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rmdir --ignore-fail-on-non-empty ${INCDIR}/${jail}
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fi
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set_firewall $jail
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}
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sub_start() {
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jail=$1
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if ! ( check_jail $jail ); then
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echo "Jail $jail doesn't exist ! Create it with '$0 init $jail'" >&2
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exit 1
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fi
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if ( check_jail_on $jail ); then
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echo "Jail $jail already running !" >&2
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exit 1
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fi
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echo "Start jail $jail"
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cd "${JAILDIR}/${jail}"
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grep -q "${JAILDIR}/${jail}/proc" /proc/mounts || mount -t proc "proc-${jail}" proc
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grep -q "${JAILDIR}/${jail}/dev" /proc/mounts || mount -nt tmpfs "dev-${jail}" dev
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[ -e "dev/console" ] || mknod -m 622 dev/console c 5 1
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[ -e "dev/null" ] || mknod -m 666 dev/null c 1 3
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[ -e "dev/zero" ] || mknod -m 666 dev/zero c 1 5
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[ -e "dev/ptmx" ] || mknod -m 666 dev/ptmx c 5 2
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[ -e "dev/tty" ] || mknod -m 666 dev/tty c 5 0
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[ -e "dev/random" ] || mknod -m 444 dev/random c 1 8
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[ -e "dev/urandom" ] || mknod -m 444 dev/urandom c 1 9
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chown root:tty dev/console dev/ptmx dev/tty
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ln -fs proc/self/fd dev/fd
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ln -fs proc/self/fd/0 dev/stdin
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ln -fs proc/self/fd/1 dev/stdout
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ln -fs proc/self/fd/2 dev/stderr
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ln -fs proc/kcore dev/core
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mkdir -p dev/pts
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mkdir -p dev/shm
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grep -q "${JAILDIR}/${jail}/dev/pts" /proc/mounts || mount -t devpts -o gid=4,mode=620 none dev/pts
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grep -q "${JAILDIR}/${jail}/dev/shm" /proc/mounts || mount -t tmpfs none dev/shm
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chroot "${JAILDIR}/${jail}" /usr/sbin/sshd
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}
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sub_stop() {
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jail=$1
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if ! ( check_jail $jail ); then
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echo "Jail $jail doesn't exist !" >&2
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exit 1
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fi
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if ! ( check_jail_on $jail ); then
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echo "Jail $jail doesnt't run !" >&2
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exit 1
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fi
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echo "Stop jail $jail"
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pid=$(cat ${JAILDIR}/${jail}/${SSHD_PID})
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for conn in $(ps --ppid $pid -o pid=); do
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kill $conn
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done
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kill $pid
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umount --lazy --recursive ${JAILDIR}/${jail}/dev
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umount --lazy ${JAILDIR}/${jail}/proc/
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}
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sub_reload() {
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jail=$1
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if ! ( check_jail $jail ); then
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echo "Jail $jail doesn't exist !" >&2
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exit 1
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fi
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if ! ( check_jail_on $jail ); then
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echo "Jail $jail doesnt't run !" >&2
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exit 1
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fi
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echo "Reload jail $jail"
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pkill -HUP -F ${JAILDIR}/${jail}/${SSHD_PID}
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}
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sub_status() {
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jail=$1
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if ! ( check_jail $jail ); then
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echo "Jail $jail doesn't exist ! Use '$0 status' for list all" >&2
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exit 1
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fi
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inc=$(get_inc $jail)
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if ( check_jail_on $jail ); then
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status="ON "
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else
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status="OFF"
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fi
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port=$(get_port $jail)
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ip=$(get_ip $jail|xargs|tr -s ' ' ',')
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echo "$jail $status $port $inc $ip" | awk '{ printf("%- 30s %- 10s %- 10s %- 10s %- 40s\n", $1, $2, $3, $4, $5); }'
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}
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sub_params() {
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jail=$1
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params=$2
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option=$3
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if ! ( check_jail $jail ); then
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echo "Jail $jail doesn't exist ! Create it with '$0 init $jail'" >&2
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exit 1
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fi
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if [ -z "${option}" ]; then
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get_${params} $jail
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else
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set_${params} $jail $option
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echo "Update $jail : $params = $option"
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fi
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}
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sub_sync() {
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jail=$1
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if ! ( check_jail $jail ); then
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echo "Jail $jail doesn't exist !" >&2
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exit 1
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fi
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if [ -z "${NODE}" ]; then
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echo "You must define \$NODE in /etc/default/bkctld !" >&2
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exit 1
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fi
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jail=$1
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ssh $NODE bkctld init $jail >/dev/null
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rsync -a ${JAILDIR}/${jail}/ ${NODE}:${JAILDIR}/${jail}/ --exclude proc/* --exclude sys/* --exclude dev/* --exclude run --exclude var/backup/*
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rsync -a ${CONFDIR}/$jail ${NODE}:${CONFDIR}/$jail
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if ( check_jail_on $jail ); then
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ssh $NODE bkctld start $jail >/dev/null
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fi
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if [ -n "${FIREWALL_RULES}" ]; then
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rsync -a ${FIREWALL_RULES} ${NODE}:${FIREWALL_RULES}
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ssh $NODE /etc/init.d/minifirewall restart >/dev/null
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fi
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}
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sub_inc() {
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date=$(date +"%Y-%m-%d-%H")
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incs_logs=""
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jails=$(ls $JAILDIR)
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for jail in $jails; do
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inc="${INCDIR}/${jail}/${date}"
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mkdir -p ${INCDIR}/${jail}
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if [ ! -d "${inc}" ]; then
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start=$(date +"%H:%M:%S")
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jail_inode=$(stat --format=%i ${JAILDIR}/${jail})
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if [ "$jail_inode" -eq 256 ]; then
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$BTRFS subvolume snapshot -r ${JAILDIR}/${jail} $inc > /dev/null
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else
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cp -alx ${JAILDIR}/${jail}/ $inc
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fi
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end=$(date +"%H:%M:%S")
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inc_log="Create $date inc of $jail (Start at $start / End at $end)"
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echo "${inc_log}"
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incs_logs="${incs_logs} ${inc_log}"
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else
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echo "Inc $date of $jail already exist !" >&2
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fi
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done
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if [ -n "${NOTIF_MAIL}" ]; then
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if [ -n "${incs_logs}" ]; then
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echo "${incs_logs}" | mail -s "[info] EvoBackup - create incs" $NOTIF_MAIL
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fi
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fi
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}
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sub_rm() {
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empty="/tmp/bkctld-${$}-$(date +%N))"
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mkdir $empty
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pidfile="/var/run/bkctld-rm.pid"
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if [ -f "${pidfile}" ]; then
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pid=$(cat $pidfile)
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ps -u $pid >/dev/null
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if [ $? -eq 0 ]; then
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echo "$0 rm always run (PID $pid) !" >&2
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kill -9 $pid
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rm $pidfile
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if [ -n "${NOTIF_MAIL}" ]; then
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echo "$0 rm $pid was killed by $$ !" | mail -s "[warn] EvoBackup - purge incs interrupted" $NOTIF_MAIL
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fi
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else
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rm $pidfile
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fi
|
|
fi
|
|
echo $$ > $pidfile
|
|
rms_logs=""
|
|
jails=$(ls $JAILDIR)
|
|
for jail in $jails; do
|
|
incs=$(ls ${INCDIR}/$jail)
|
|
if [ -f ${CONFDIR}/$jail ]; then
|
|
keepfile="${CONFDIR}/.keep-${jail}"
|
|
while read j; do
|
|
date=$( echo "$j" | cut -d. -f1 )
|
|
before=$( echo "$j" | cut -d. -f2 )
|
|
date -d "$(date "$date") $before" "+%Y-%m-%d"
|
|
done < "${CONFDIR}/$jail" > "$keepfile"
|
|
for j in $(echo "${incs}" | grep -v -f "$keepfile"); do
|
|
start=$(date +"%H:%M:%S")
|
|
inc_inode=$(stat --format=%i "${INCDIR}/${jail}/${j}")
|
|
if [ "$inc_inode" -eq 256 ]; then
|
|
$BTRFS subvolume delete "${INCDIR}/${jail}/${j}" >/dev/null
|
|
else
|
|
cd "${INCDIR}/$jail"
|
|
rsync -a --delete "$empty/" "$j/"
|
|
rmdir "$j"
|
|
fi
|
|
end=$(date +"%H:%M:%S")
|
|
rm_log="Delete $j inc of $jail (Start at $start / End at $end)"
|
|
echo "${rm_log}"
|
|
rms_logs="${rms_logs} ${rm_log}"
|
|
done
|
|
fi
|
|
done
|
|
rmdir $empty
|
|
rm $pidfile
|
|
if [ -n "${NOTIF_MAIL}" ]; then
|
|
if [ -n "${rms_logs}" ]; then
|
|
echo "${rms_logs}" | mail -s "[info] EvoBackup - purge incs" $NOTIF_MAIL
|
|
fi
|
|
fi
|
|
}
|
|
|
|
## log function
|
|
|
|
log() {
|
|
subcommand=$1
|
|
logfile="${LOG_DIR}/bkctld.log"
|
|
shift
|
|
tty -s
|
|
if [ $? -eq 0 ]; then
|
|
sub_${subcommand} "$@" 2>&1 | tee -a $logfile
|
|
else
|
|
sub_${subcommand} "$@" >> $logfile 2>&1
|
|
fi
|
|
}
|
|
|
|
## main function : check usage and valid params
|
|
|
|
main() {
|
|
if [ "$(id -u)" -ne 0 ]; then
|
|
echo "Error, you need to be root to run $0 !" >&2
|
|
exit 1
|
|
fi
|
|
[ -f /etc/default/bkctld ] && . /etc/default/bkctld
|
|
[ -z "${CONFDIR}" ] && CONFDIR='/etc/evobackup'
|
|
[ -z "${JAILDIR}" ] && JAILDIR='/backup/jails'
|
|
[ -z "${INCDIR}" ] && INCDIR='/backup/incs'
|
|
[ -z "${TPLDIR}" ] && TPLDIR='/usr/share/bkctld'
|
|
[ -z "${LOCALTPLDIR}" ] && LOCALTPLDIR='/usr/local/share/bkctld'
|
|
[ -z "${LOG_DIR}" ] && LOG_DIR='/var/log'
|
|
[ -z "${SSHD_PID}" ] && SSHD_PID='/run/sshd.pid'
|
|
[ -z "${SSHD_CONFIG}" ] && SSHD_CONFIG='/etc/ssh/sshd_config'
|
|
[ -z "${AUTHORIZED_KEYS}" ] && AUTHORIZED_KEYS='/root/.ssh/authorized_keys'
|
|
BTRFS=$(which btrfs)
|
|
mkdir -p $CONFDIR $JAILDIR $INCDIR
|
|
subcommand=$1
|
|
jail=$2
|
|
option=$3
|
|
case $subcommand in
|
|
"" | "-h" | "--help")
|
|
usage
|
|
;;
|
|
"inc" | "rm")
|
|
log $subcommand
|
|
;;
|
|
"init")
|
|
if [ -n "${jail}" ]; then
|
|
log $subcommand $jail
|
|
else
|
|
usage
|
|
fi
|
|
;;
|
|
"key" | "port" | "ip")
|
|
if [ -n "${jail}" ]; then
|
|
log params $jail $subcommand $option
|
|
else
|
|
usage
|
|
fi
|
|
;;
|
|
"start" | "stop" | "reload" | "restart" | "sync" | "update" | "remove")
|
|
if [ -n "${jail}" ]; then
|
|
if [ "${jail}" = "all" ]; then
|
|
jails=$(ls $JAILDIR)
|
|
for jail in $jails; do
|
|
case $subcommand in
|
|
"start")
|
|
if ! ( check_jail_on $jail ); then
|
|
log $subcommand $jail
|
|
fi
|
|
;;
|
|
"stop" | "reload")
|
|
if ( check_jail_on $jail ); then
|
|
log $subcommand $jail
|
|
fi
|
|
;;
|
|
"restart")
|
|
if ( check_jail_on $jail ); then
|
|
log stop $jail
|
|
fi
|
|
log start $jail
|
|
;;
|
|
*)
|
|
log $subcommand $jail
|
|
;;
|
|
esac
|
|
done
|
|
else
|
|
if [ "${subcommand}" != "restart" ]; then
|
|
log $subcommand $jail
|
|
else
|
|
if ( check_jail_on $jail ); then
|
|
log stop $jail
|
|
fi
|
|
log start $jail
|
|
fi
|
|
fi
|
|
else
|
|
usage
|
|
fi
|
|
;;
|
|
"status")
|
|
if [ -z "${jail}" ]; then
|
|
jails=$(ls $JAILDIR)
|
|
for jail in $jails; do
|
|
sub_$subcommand $jail
|
|
done
|
|
else
|
|
sub_$subcommand $jail
|
|
fi
|
|
;;
|
|
*)
|
|
shift
|
|
echo "Error: '${subcommand}' is not a known subcommand." >&2
|
|
usage
|
|
exit 1
|
|
;;
|
|
esac
|
|
}
|
|
|
|
main "$@"
|