jejer@bloger.com

2016年8月8日星期一

Shadowsocks ss-redir on openwrt

https://github.com/shadowsocks/shadowsocks-libev
http://openwrt-dist.sourceforge.net/releases/ar71xx/packages/

opkg install iptables-mod-tproxy
opkg install shadowsocks-libev-spec_x.x.x_ar71xx.ipk

customer rule:

# Create new chain
iptables -t nat -N SHADOWSOCKS
iptables -t mangle -N SHADOWSOCKS

# Ignore your shadowsocks server's addresses
# It's very IMPORTANT, just be careful.
iptables -t nat -A SHADOWSOCKS -d 45.78.42.235 -j RETURN

# Ignore LANs and any other addresses you'd like to bypass the proxy
# See Wikipedia and RFC5735 for full list of reserved networks.
# See ashi009/bestroutetb for a highly optimized CHN route list.
iptables -t nat -A SHADOWSOCKS -d 0.0.0.0/8 -j RETURN
iptables -t nat -A SHADOWSOCKS -d 10.0.0.0/8 -j RETURN
iptables -t nat -A SHADOWSOCKS -d 127.0.0.0/8 -j RETURN
iptables -t nat -A SHADOWSOCKS -d 169.254.0.0/16 -j RETURN
iptables -t nat -A SHADOWSOCKS -d 172.16.0.0/12 -j RETURN
iptables -t nat -A SHADOWSOCKS -d 192.168.0.0/16 -j RETURN
iptables -t nat -A SHADOWSOCKS -d 224.0.0.0/4 -j RETURN
iptables -t nat -A SHADOWSOCKS -d 240.0.0.0/4 -j RETURN

# Anything else should be redirected to shadowsocks's local port
iptables -t nat -A SHADOWSOCKS -p tcp -j REDIRECT --to-ports 8080
# Add any UDP rules
ip rule add fwmark 0x01/0x01 table 100
ip route add local 0.0.0.0/0 dev lo table 100
iptables -t mangle -A SHADOWSOCKS -p udp --dport 53 -j TPROXY --on-port 8080 --tproxy-mark 0x01/0x01

# Apply the rules
iptables -t nat -A PREROUTING -p tcp -j SHADOWSOCKS
iptables -t mangle -A PREROUTING -j SHADOWSOCKS

# Start the shadowsocks-redir
ss-redir -u -c /etc/config/shadowsocks.json -f /var/run/shadowsocks.pid

2015年6月21日星期日

Arch Linux install procedure

2015-6-20
https://wiki.archlinux.org/

Pre-installation
fdisk
mkfs.ext4 -j /dev/sda1
mount /dev/sda1 /mnt
wifi-menu #connect to internet

Installation
# cp /etc/pacman.d/mirrorlist /etc/pacman.d/mirrorlist.backup
# sed -i 's/^#Server/Server/' /etc/pacman.d/mirrorlist.backup
# rankmirrors -n 6 /etc/pacman.d/mirrorlist.backup > /etc/pacman.d/mirrorlist
pacstrap /mnt base

Configure the system
genfstab -p /mnt >> /mnt/etc/fstab
arch-chroot /mnt
echo computer_name > /etc/hostname
ln -sf /usr/share/zoneinfo/Asia/Chongqing /etc/localtime
vi /etc/locale.gen # uncomment en_US.UTF-8
locale-gen
echo "LANG=en_US.UTF-8" > /etc/locale.conf
mkinitcpio -p linux
pacman -S grub
grub-install --target=i386-pc --recheck --debug /dev/sda
grub-mkconfig -o /boot/grub/grub.cfg
passwd
pacman -S openssh
pacman -S wpa_actiond ifplugd wpa_supplicant dhcpcd dialog ppp #wifi-menu need
exit
umount -R /mnt
shutdown -r now

Configure after Arch install
systemctl enable sshd
wifi-menu -o #setup wifi after reboot
systemctl enable netctl
pacman -S net-tools #ifconfig netstat
systemctl enable systemd-timesyncd

Audio
pacman -S alsa-utils
useradd -m jejer
usermod -aG audio jejer
#alsamixer

X
pacman -S xorg-server # reinstall if you add user after xorg-server install
pacman -S ttf-droid # Chinese font
pacman -S tigervnc # for VNC server
vi ~/.vnc/xstartup
#!/bin/sh
export XKL_XMODMAP_DISABLE=1
exec startxfce4

xfce
pacman -S xfce4
startxfce4 #start X with xfce window manager manually

fcitx pinyin
pacman -S fcitx-im
pacman -S fcitx-configtool #configure for GTK
pacman -S fcitx-googlepinyin

PS:
setup proxy for some applications:
export ALL_PROXY="socks5://192.168.88.3:8080"

FIX Problem with pacman update - Signature is unknown trust
rm -R /etc/pacman.d/gnupg
pacman-key --init
pacman-key --populate archlinux

2015年6月5日星期五

Enable UTF-8 support for linkstation

Add LANG=en_US.UTF-8 in /root/.bashrc

-------------------
proftpd fix

1. create /root/ftpd.sh according to /etc/init.d/ftpd.sh
add function
force_utf8()
{
if [ -f /etc/proftpd/proftpd.conf ]; then
cp /etc/proftpd/proftpd.conf /etc/proftpd/proftpd.conf.original
sed -i -e 's/CP936/UTF-8/g' /etc/proftpd/proftpd.conf
fi
sync
sleep 1
}

add force_utf8 call in start()

#! /bin/sh
#

KIND="FTPD"
FTPDOPTIONS=
RETVAL=0

if [ -f /etc/melco/info ]; then
        . /etc/melco/info
fi

configure()
{
        if [ -f /etc/linkstation_release ]; then
                ## configure files from Buffalo parameters.
                echo "configure ftpd"
                /usr/local/sbin/nas_configgen -c proftpd
                if [ $? -ne 0 ]; then
                        echo "$0 configure fail"
                        exit 1
                fi
        fi
        sync
        sleep 1
}

force_utf8()
{
        if [ -f /etc/proftpd/proftpd.conf ]; then
                cp /etc/proftpd/proftpd.conf /etc/proftpd/proftpd.conf.original
                sed -i -e 's/CP936/UTF-8/g' /etc/proftpd/proftpd.conf
        fi
        sync
        sleep 1
}

start()
{
        if [ "$ftp" != "on" ] ; then
                echo "ftp is OFF"
                exit 0
        fi
        configure
        force_utf8
        echo -n $"Starting $KIND services: "
        /usr/local/sbin/proftpd $FTPDOPTIONS
        RETVAL=$?
        echo
        [ $RETVAL -eq 0 ] && touch /var/lock/subsys/ftpd || \
           RETVAL=1
        return $RETVAL
}

stop() {
        echo -n $"Shutting down $KIND services: "
        killall proftpd
        RETVAL=$?
        echo
        [ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/ftpd
        echo ""
        return $RETVAL
}

restart() {
        stop
        start
}

reload() {
        echo -n $"Reloading proftpd.conf file: "
        killall -HUP proftpd
        RETVAL=$?
        echo
        return $RETVAL
}

#
# Usage statement.
#

case "$1" in
        start)
                start
                ;;
        stop)
                stop
                ;;
        restart)
                restart
                ;;
        reload)
                reload
                ;;
        *)
                echo "usage: $0 {start|stop|restart|reload}"
                exit 1
                ;;
esac

2. create S99_fix_ftp.sh in /etc/rc.d/extensions.d
and chmod +x S99_fix_ftp.sh
root@ls-qvl:/etc/rc.d/extensions.d# cat S99_fix_ftp.sh

#! /bin/sh
#

/bin/cp /root/ftpd.sh /etc/init.d/ftpd.sh
/etc/init.d/ftpd.sh restart

2015年5月16日星期六

Custom Sleep for LS-QVL

1. Set linkstation to auto mode.
2. Add crontab to run this script every 2mins
*/2 * * * * /root/custom_sleep.sh

root@ls-qvl:~# cat custom_sleep.sh 
#!/bin/bash

################################################################################
#
# CUSTOM_SLEEP                                               by brumi 2010-07-16
#
################################################################################

# NOTE: please run this script every 2mins by crontab

# This cron-job is intended to be used as replacement for the provided standby-
# mechanism from buffalo. It checks for open connections and only when there are
# no open connections found for a certain period of time it will put the link-
# station into standby.



TIMEOUT=1800        # wait TIMEOUT seconds before going to standby

CONN_FILE=/var/run/connected        # file to store timestamp
LOG_FILE=/var/log/custom_sleep        # log-file
ENABLE_LOG='yes'                # enable logging [yes|no]


# ip addresses to exclude from the connection-check (i.e., local ones)
OWN_IPADDR=`/bin/ipaddr show eth0 | /bin/grep -o -e "inet [0-9]*\.[0-9]*\.[0-9]*\.[0-9]*" | /bin/sed s/"inet "//`
EXCLUDE_IPADDR=(${OWN_IPADDR} 0.0.0.0 127.0.0.1 239.255.255.250 192.168.88.255)
EXCLUDE_IPADDR_CT=5


# disable sleep in manual mode
auto_pwr_stat=`cat /proc/buffalo/gpio/switch/auto_power`
if [ "$auto_pwr_stat" != "on" ]; then
        if [ $ENABLE_LOG == 'yes' ]; then                           
                echo -n `date` >> $LOG_FILE
                echo ": custom_sleep: not in auto mode, exit" >> $LOG_FILE
        fi
        exit 0
fi


# do nothing if already sleeping
if [ -f /etc/linkstation_standby ]; then
        if [ $ENABLE_LOG == 'yes' ]; then
                echo -n `date` >> $LOG_FILE
                echo ": custom_sleep: already sleeping" >> $LOG_FILE
        fi
        exit 0
fi


# function to check if any clients are connected
connected () {
        CONN_IPADDR=`/bin/netstat -tna 2> /dev/null | /bin/sed s/"[0-9]*\.[0-9]*\.[0-9]*\.[0-9]*"/"&\n"/ | /bin/grep -o -e "[0-9]*\.[0-9]*\.[0-9]*\.[0-9]*"`
        for ip in $CONN_IPADDR
        do
                exclude=0
                for ((i=0;i<$EXCLUDE_IPADDR_CT;i++))
                do
                        if [ ${EXCLUDE_IPADDR[$i]} == $ip ]; then
                                exclude=1
                        fi
                done
                if [ $exclude -eq 0 ]; then
                        if [ $ENABLE_LOG == 'yes' ]; then
                                echo -n `date` >> $LOG_FILE
                                echo ": custom_sleep: active ip $ip" >> $LOG_FILE
                        fi
                        return 1
                fi
        done
        return 0
}

# check for connections and update $CONN_FILE
connected
if [ $? -eq 1 ]; then 
        if [ -f $CONN_FILE ]; then 
                rm $CONN_FILE
        fi
else
        if [ ! -f $CONN_FILE ]; then
                date +%s > $CONN_FILE        
        fi
fi        


# check when last connection was found
if [ -f $CONN_FILE ]; then 
        last_conn=`/bin/cat $CONN_FILE`
        comp_time=`/bin/date +%s`
        let "comp_time -= $TIMEOUT"
        if [ $last_conn  -gt $comp_time ]; then
                /usr/local/sbin/pwrmgr -c localhost act
                if [ $ENABLE_LOG == 'yes' ]; then
                        echo -n `date` >> $LOG_FILE
                        echo ": custom_sleep: wait-after-connection prevented standby" >> $LOG_FILE
                fi
                exit 0
        fi
else 
        /usr/local/sbin/pwrmgr -c localhost act
        if [ $ENABLE_LOG == 'yes' ]; then
                echo -n `date` >> $LOG_FILE
                echo ": custom_sleep: connections prevented standby" >> $LOG_FILE
        fi
        exit 0
fi

# no one busy -> clear timestamp and STANDBY
if [ $ENABLE_LOG == 'yes' ]; then
        echo -n `date` >> $LOG_FILE
        echo ": custom_sleep: going to standby" >> $LOG_FILE
fi
rm $CONN_FILE
/usr/local/sbin/pwrmgr -u

How to WOL:
1. Python2

#!/usr/bin/env python2
import socket
import time

bcast_addr = '192.168.88.255' # broadcast address for you network
target_mac = "4C:E6:76:E7:xx:xx" # colons are optional, case does not matter

mac = target_mac.replace(':', "")
mac_bytes = "".join([chr(int(mac[i:i+2], 16)) for i in range(0, len(mac), 2)])
WoL_packet = '\xff'*6 + mac_bytes * 16

s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)

while 1:
    s.sendto(WoL_packet, (bcast_addr, 9))
    print "Sent paket!"
    time.sleep(180)

2. ArchLinux

pacman -S wol

3. dd-wrt router

Administration -- WOL -- Manual WOL, with port 9

4. Windows

http://www.depicus.com/wake-on-lan/wake-on-lan-cmd.aspx

[email protected]

SyntaxHighlighter