dhcpcd and dhcpcd-run-hooks on Raspbian

Written by pmd - - no comments

If you are using Raspbian GNU/Linux 9 (stretch), then you are most likely using dhcpcd as your DHCP and DHCPv6 client. How to know your OS version? Here :

$ cat /etc/os-release
PRETTY_NAME="Raspbian GNU/Linux 9 (stretch)"
NAME="Raspbian GNU/Linux"
VERSION_ID="9"
VERSION="9 (stretch)"
ID=raspbian
ID_LIKE=debian
HOME_URL="http://www.raspbian.org/"
SUPPORT_URL="http://www.raspbian.org/RaspbianForums"
BUG_REPORT_URL="http://www.raspbian.org/RaspbianBugs"
  • dhcpcd gets the host information (IP address, routes, etc) from a DHCP server and configures the network interface of the machine on which it is running. Manual of DHCPCD(8).
  • dhcpcd-run-hooks is a DHCP client configuration script. It is used by dhcpcd to run any system and user defined hook scripts. Manual of DHCPCD-RUN-HOOKS(8).

dhcpcd

It seems that to restart all network interfaces this works :

$ sudo systemctl restart dhcpcd.service

To understand what happened, better read dhcpcd logs, here is what we can see:

$ journalctl -u dhcpcd
Dec 21 15:38:04 raspberrypi systemd[1]: Stopping dhcpcd on all interfaces...
Dec 21 15:38:04 raspberrypi dhcpcd[15174]: sending signal TERM to pid 14888
Dec 21 15:38:04 raspberrypi dhcpcd[15174]: waiting for pid 14888 to exit
Dec 21 15:38:04 raspberrypi dhcpcd[14888]: received SIGTERM, stopping
Dec 21 15:38:04 raspberrypi dhcpcd[14888]: eth0: removing interface
Dec 21 15:38:04 raspberrypi dhcpcd[14888]: wlan0: removing interface
Dec 21 15:38:04 raspberrypi dhcpcd[15174]: sending signal TERM to pid 14888
Dec 21 15:38:04 raspberrypi dhcpcd[15174]: waiting for pid 14888 to exit
Dec 21 15:38:05 raspberrypi systemd[1]: Stopped dhcpcd on all interfaces.
Dec 21 15:38:05 raspberrypi systemd[1]: Starting dhcpcd on all interfaces...
Dec 21 15:38:05 raspberrypi dhcpcd[15180]: dev: loaded udev
Dec 21 15:38:05 raspberrypi systemd[1]: Started dhcpcd on all interfaces.
Dec 21 15:38:05 raspberrypi dhcpcd-run-hooks[15203]: wlan0: starting wpa_supplicant
Dec 21 15:38:05 raspberrypi dhcpcd[15185]: eth0: waiting for carrier
Dec 21 15:38:05 raspberrypi dhcpcd[15185]: wlan0: waiting for carrier
Dec 21 15:38:06 raspberrypi dhcpcd[15185]: wlan0: carrier acquired
Dec 21 15:38:06 raspberrypi dhcpcd[15185]: DUID 00:01:00:01:21:b0:de:63:b8:27:eb:4d:6c:87
Dec 21 15:38:06 raspberrypi dhcpcd[15185]: wlan0: IAID eb:5d:6d:97
Dec 21 15:38:06 raspberrypi dhcpcd[15185]: wlan0: adding address fe80::2882:e851:cf0c:9242
Dec 21 15:38:06 raspberrypi dhcpcd[15185]: wlan0: soliciting an IPv6 router
Dec 21 15:38:06 raspberrypi dhcpcd[15185]: wlan0: rebinding lease of 192.168.254.200
Dec 21 15:38:06 raspberrypi dhcpcd[15185]: wlan0: leased 192.168.254.200 for 86400 seconds
Dec 21 15:38:06 raspberrypi dhcpcd[15185]: wlan0: adding route to 192.168.254.0/24
Dec 21 15:38:06 raspberrypi dhcpcd[15185]: wlan0: adding default route via 192.168.254.1
Dec 21 15:38:19 raspberrypi dhcpcd[15185]: wlan0: no IPv6 Routers available

Source

dhcpcd-run-hooks

dhcpcd runs /lib/dhcpcd/dhcpcd-run-hooks. This script runs each script found in /lib/dhcpcd/dhcpcd-hooks in a lexical order.
dhcpcd-run-hooks is used by dhcpcd to run any system and user defined hook scripts. System hook scripts are found in /lib/dhcpcd/dhcpcd-hooks.
There is a list of reasons why dhcpcd-run-hooks could be invoked, such as BOUND (= dhcpcd obtained a new lease from a DHCP server = computer has an IP assigned on the interface).
Many variables will then be set, along with any protocol supplied ones, such as :

  • $interface : the name of the interface
  • $reason : reason why dhcpcd-run-hooks was invoked
  • $if_up : true if the interface is up, otherwise false.

To know what is the current IPv4 address after an interface BOUNDed dhcpcd obtained a new lease from a DHCP server.:

ifconfig $interface | grep "inet " | awk '{print $2}'

I created /lib/dhcpcd/dhcpcd-hooks/60-test_by_pmd in order to play with this functionality. Shell script I used in order to check IP after new DHCP lease was obtained (writing output in /home/pi/test.txt in order to see what happened afterward):

if [ "$reason" = "BOUND" ] && [ "$if_up" = "true" ]; then
     echo "$(date +"%d-%m-%y %H:%M:%S ") $reason $interface IP:$if_up DOWN:$if_down" >> /home/pi/test.txt
     ifconfig $interface | grep "inet " | awk '{print $2}' >> /home/pi/test.txt
fi

Sources : both manuals.

AUTO-Update of openvpn configuration

Written by pmd - - no comments

It happens that NordVPN openvpn configuration files don't work anymore after a while.

I made a bash script to update the configuration easy and fast:

#!/bin/bash
# Mise a jour de la configuration NordVPN
# Dossier temporaire
DOSSIER_TEMP="/home/pi/NordVPNautoUpdate"
#Dossier des configurations openvpn
DOSSIER_OPENVPN="/etc/openvpn"
CONF_OPENVPN="server.conf"
AUTOLOGIN_OPENVPN="login.txt"
# Pays
PAYS="fr"
# TCP ou UDP?
PROTO="udp"
# Archive de configuration NordVPN
ARCHIVE_NORDVPN="https://nordvpn.com/api/files/zip"
FICHIER=$(echo -n $ARCHIVE_NORDVPN | awk -F "/" '{printf $NF}')

# On supprime et on crée le dossier temp
rm -rf $DOSSIER_TEMP
mkdir $DOSSIER_TEMP

# On télécharge tous les fichiers de conf NordVPN
wget $ARCHIVE_NORDVPN -P $DOSSIER_TEMP

# On dézip l'archive téléchargée
mkdir $DOSSIER_TEMP/temp
unzip -q "$DOSSIER_TEMP/$FICHIER" -d $DOSSIER_TEMP/temp

# On garde que les conf d'un certain pays
mv $DOSSIER_TEMP/temp/$PAYS[0-9]*$PROTO* $DOSSIER_TEMP/
rm -r $DOSSIER_TEMP/temp

# On supprime les conf double-VPN et l'archive zip
NbConf=0
for ConfOpenVPN in $DOSSIER_TEMP/*; do
        if [[ $ConfOpenVPN != */$PAYS[0-9]*$PROTO* ]]; then
                rm $ConfOpenVPN
        else
                # On compte le nombre de conf restantes
                NbConf=$((NbConf+1))
        fi
done

# On choisi une conf au hasard
NbConf=$((1 + RANDOM % $NbConf))
COMPTEUR=0
for ConfOpenVPN in $DOSSIER_TEMP/*; do
        COMPTEUR=$((COMPTEUR+1))
        if [[ $COMPTEUR -eq $NbConf ]]; then
            # On modifie la configuration pour authentification automatique
            sed -i "s@auth-user-pass@auth-user-pass $DOSSIER_OPENVPN/$AUTOLOGIN_OPENVPN@" $ConfOpenVPN
            # On déplace la conf dans le dossier openvpn
            sudo cp -f $ConfOpenVPN $DOSSIER_OPENVPN
            sudo cp -f $ConfOpenVPN $DOSSIER_OPENVPN/$CONF_OPENVPN
                        # On informe
                        echo "Configuration installée :"
                        echo $ConfOpenVPN | awk -F "/" '{printf $NF}'
                        echo ""
        fi
done

# On supprime le dossier temporaire
rm -rf $DOSSIER_TEMP
# On redémarre openvpn avec la nouvelle configuration
sudo service openvpn restart

Then simply execute the script:

bash NordVPNautoUpdate.sh

Unlock standalone Airsonic database

Written by pmd - - no comments

If your airsonic is stucked for some reasons such as Liquibase Update Failed and Waiting for changelog lock...

liquibase.exception.LockException: Could not acquire change log lock. Currently locked by 192.168.254.200 (192.168.254.200) since 18/11/18 16:39
  1. Stop Airsonic for sure :
    sudo service airsonic stop
  2. Read logs /var/airsonic/airsonic.log :
    nano /var/airsonic/airsonic.log
  3. Backup your database folder /var/airsonic/db :
    sudo cp /var/airsonic/db /var/airsonic/db_backup
  4. Edit /var/airsonic/db/airsonic.script :
    sudo nano /var/airsonic/db/airsonic.script
    • remove all lines where you can find DATABASECHANGELOGLOCK by example :
      • CREATE MEMORY TABLE DATABASECHANGELOGLOCK.....
      • INSERT INTO DATABASECHANGELOGLOCK VALUES(1,TRUE,'2018-11-18 16:39:56.266000000','192.168.254.200 (192.168.254.200)')
  5. Save file.
  6. Start Airsonic :
    sudo service airsonic start
  7. Check Airsonic status :
    sudo service airsonic status

If you wanna reset your Airsonic music server, just delete the database /var/airsonic/db ...

Source 1, 2, 3.

Update Airsonic on Raspberry Pi 3

Written by pmd - - no comments

How to update a standalone Airsonic

  • Stop the current running Airsonic:
$ sudo systemctl stop airsonic.service
$ cd /var/airsonic/
$ sudo mv airsonic.war airsonic.war.10.1.1.bak
$ sudo wget https://github.com/airsonic/airsonic/releases/download/v10.1.2/airsonic.war --output-document=/var/airsonic/airsonic.war
  • Put good rights to all folder (new airsonic.war is not owned by airsonic), and verify it has been applied:
$ sudo chown -R airsonic:airsonic /var/airsonic
$ ls
total 151M
-rw-r--r--  1 airsonic airsonic 760K Oct 11 19:52 airsonic.log
-rw-r--r--  1 airsonic airsonic  11M Oct  3 00:20 airsonic.log.1
-rw-r--r--  1 airsonic airsonic  978 Oct 11 04:00 airsonic.properties
-rw-r--r--  1 airsonic airsonic  70M Jul 28 22:10 airsonic.war
-rw-r--r--  1 airsonic airsonic  70M Dec 16  2017 airsonic.war.10.1.1.bak
drwxr-xr-x  2 airsonic airsonic 4.0K Oct 11 19:49 db
drwxr-xr-x  2 airsonic airsonic  20K Sep 14 16:08 lastfmcache
drwxr-xr-x  7 airsonic airsonic 4.0K Jul 22 10:36 lucene2
-rw-r--r--  1 airsonic airsonic  741 Oct 11 19:50 rollback.sql
drwxr-xr-x 16 airsonic airsonic 4.0K Oct  4 17:45 thumbs
drwxr-xr-x  2 airsonic airsonic 4.0K Jul 22 10:54 transcode
  • Start updated Airsonic and restart proxy server:
$ sudo systemctl start airsonic.service
$ sudo service nginx restart

Nothing too hard, basically, you need to replace the airsonic.war by the updated one.

PluXml 5.6 / CKEditor 4.7.3 modification to get handy code <div>

Written by pmd - - no comments

I modified the file /plugins/ckeditor/ckeditor/styles.js to have a much more easier way to put code in my memo.

Before:

    {
        name: 'Special Container',
        element: 'div',
        styles: {
            padding: '5px 10px',
            background: '#eee',
            border: '1px solid #ccc'
        }
    },

After:

    {
        name: 'Special Container',
        element: 'div',
        styles: {
            padding: '5px 10px',
            background: '#eee',
            border: '1px solid #ccc',
            'white-space': 'nowrap',
            'overflow': 'auto',
            'font-family': 'monospace, monospace',
            'font-size': '0.9rem'
        }
    },

Unstable Wifi connection to Raspberry Pi 3

Written by pmd - - no comments

Original post

I am loosing connection to my Raspberry Pi 3 in a very much random way.

I recently replaced Subsonic by Airsonic, and connection to Pi seemed to be much more stable since that exact day. But today, it happened one more time... as I was expecting! Time to troubleshoot has come.

Since I am using 2 tables to root my traffic, one of them is not updated on some interface up/down events. I made a small script called by cron every 5 minutes to understand things and rebooting Pi once a day to get the access back:

#!/usr/bin/env bash

# Script to monitor and restart wireless access point when needed

# Logging
date >> NetworkCheckLog
echo "wap_check_pmd: Checking if network connection is down..." >> NetworkCheckLog
echo "$ ip route show table main" >> NetworkCheckLog
ip route show table main >> NetworkCheckLog
echo "$ ip route show table 42" >> NetworkCheckLog
ip route show table 42 >> NetworkCheckLog

# First make sure we can resolve google, otherwise 'ping -w' would hang
if ! $(host -W5 www.google.com > /dev/null 2>&1); then
        #Make a note in syslog
        logger "wap_check_pmd: Network connection is down..."
        date >> NetworkCheckLog
        ifconfig >> NetworkCheckLog
        echo "wap_check_pmd: Network connection is down..." >> NetworkCheckLog
        exit
fi

Time when it got fucked:

Mon  6 Aug 08:55:01 CEST 2018
wap_check_pmd: Checking if network connection is down...
$ ip route show table main
0.0.0.0/1 via 10.8.7.1 dev tun0
default via 192.168.1.1 dev wlan0 src 192.168.1.200 metric 303
10.8.8.0/24 dev tun0 proto kernel scope link src 10.8.7.12
31.192.112.170 via 192.168.1.1 dev wlan0
128.0.0.0/1 via 10.8.7.1 dev tun0
192.168.1.0/24 dev wlan0 proto kernel scope link src 192.168.1.200 metric 303
$ ip route show table 42
default via 192.168.1.1 dev wlan0 src 192.168.1.200 metric 303
192.168.1.0/24 dev wlan0 proto kernel scope link src 192.168.1.200 metric 303

Mon  6 Aug 09:00:01 CEST 2018
wap_check_pmd: Checking if network connection is down...
$ ip route show table main
0.0.0.0/1 via 10.8.7.1 dev tun0
default via 192.168.1.1 dev wlan0 src 192.168.1.200 metric 303
10.8.8.0/24 dev tun0 proto kernel scope link src 10.8.7.12
128.0.0.0/1 via 10.8.7.1 dev tun0
192.168.1.0/24 dev wlan0 proto kernel scope link src 192.168.1.200 metric 303
$ ip route show table 42
Mon  6 Aug 09:00:15 CEST 2018
wap_check_pmd: Network connection is down...

I then checked /var/log/syslog:

Aug  6 08:59:26 raspberrypi dhcpcd[382]: wlan0: carrier lost
[...]
Aug  6 08:59:26 raspberrypi dhcpcd[382]: wlan0: deleting default route via 192.168.1.1
Aug  6 08:59:26 raspberrypi dhcpcd[382]: wlan0: deleting route to 192.168.1.0/24
[...]
Aug  6 08:59:51 raspberrypi dhcpcd[382]: wlan0: carrier acquired

After Googling, I found an interesting article. Which provide interesting tips.

  1. Use this command to read the current power saving mode of your Pi:
    $ sudo iw wlan0 get power_save
    Power save: on
  2. And this one to turn power_save off:
    $ sudo iw wlan0 set power_save off
  3. To make this permanent add the following line to /etc/rc.local:
    /sbin/iw dev wlan0 set power_save off

We will see if it helps :)

Update 27/10/2018

I choose to turn the power_save off as it originally was. But I came up with this script:

#!/bin/bash
#/home/pi/wap_check
# Script to monitor and restart wireless access point when needed
maxPloss=10 #Maximum percent packet loss before a restart

# Logging
# echo "$(date +"%d-%m-%y %H:%M:%S ") wap_check_pmd: Checking if network connection is down..." >> /home/pi/NetworkCheckLog

# If table 42 is empty, we lost raspberry
TABLE_42=$(ip route show table 42)
if [[ -z "${TABLE_42}" ]]; then
  # Loging
  echo  "$(date +"%d-%m-%y %H:%M:%S ") wap_check_pmd: Table 42 is empty! Trying to populate it:" >> /home/pi/NetworkCheckLog
  logger "wap_check_pmd: Table 42 is empty! Trying to populate it."
  # Filling up the table 42
  ip route show table main | grep -v tun0 | while read LINE; do sudo ip route add $LINE table 42; done
  sleep 1
  ip route show table 42 >> /home/pi/NetworkCheckLog
fi

# IP cannot be the same, debian-transmission can go only through tun0
IP_VPN=$(sudo -u debian-transmission wget -qO- ifconfig.co)
IP_PUBLIC=$(wget -qO- ifconfig.co)
if [[ "${IP_VPN}" = "${IP_PUBLIC}" ]]; then
  echo "$(date +"%d-%m-%y %H:%M:%S ") wap_check_pmd: Same IP for debian-transmission and pi: $(echo $IP_VPN) and $(echo $IP_PUBLIC)" >> /home/pi/NetworkCheckLog
  logger "wap_check_pmd: Same IP for debian-transmission and pi..."
  if [[ -n "${IP_PUBLIC}"  ]]; then
    echo "$(date +"%d-%m-%y %H:%M:%S ") wap_check_pmd: Rebooting. [1]" >> /home/pi/NetworkCheckLog
        logger "wap_check_pmd: Rebooting. [1]"
    sleep 1
    sudo /sbin/reboot
        exit
  fi
fi

# Make sure we can resolve google, otherwise 'ping -w' would hang
if ! $(host -W5 www.google.com > /dev/null 2>&1); then
    # Make a note in syslog
    logger "wap_check_pmd: Network connection is down..."
        echo "$(date +"%d-%m-%y %H:%M:%S ") wap_check_pmd: Rebooting. [2]" >> /home/pi/NetworkCheckLog
        logger "wap_check_pmd: Rebooting. [2]"
        # Restart device
        sleep 1
        sudo /sbin/reboot
    exit
fi

# Initialize to a value that would force a restart
# (just in case ping gives an error and ploss doesn't get set)
ploss=101
# now ping google for 10 seconds and count packet loss
ploss=$(ping -q -w10 www.google.com | grep -o "[0-9]*%" | tr -d %) > /dev/null 2>&1
if [ "$ploss" -gt "$maxPloss" ]; then
    logger "wap_check_pmd: Packet loss ($ploss%) exceeded $maxPloss"
    echo "$(date +"%d-%m-%y %H:%M:%S ") wap_check_pmd: Packet loss ($ploss%) exceeded $maxPloss" >> /home/pi/NetworkCheckLog
    # restart_networking
fi

I run this script every 5 minutes, line in my crontab file:

*/5 * * * * /bin/bash /home/pi/NetworkCheck.sh

Log file looks like this:

22-09-18 22:25:02  wap_check_pmd: Table 42 is empty! Trying to populate it:
22-09-18 22:26:55  wap_check_pmd: Same IP for debian-transmission and pi:  and
22-09-18 22:27:09  wap_check_pmd: Rebooting. [2]
24-09-18 23:20:16  wap_check_pmd: Rebooting. [2]
25-09-18 22:26:10  wap_check_pmd: Packet loss (30%) exceeded 10
25-09-18 23:11:07  wap_check_pmd: Packet loss (16%) exceeded 10
04-10-18 02:55:12  wap_check_pmd: Packet loss (70%) exceeded 10
04-10-18 15:50:01  wap_check_pmd: Table 42 is empty! Trying to populate it:
default via 192.168.1.1 dev wlan0 src 192.168.1.200 metric 303
192.168.1.0/24 dev wlan0 proto kernel scope link src 192.168.1.200 metric 303
04-10-18 19:20:12  wap_check_pmd: Packet loss (20%) exceeded 10
04-10-18 20:40:27  wap_check_pmd: Packet loss (30%) exceeded 10
04-10-18 20:55:21  wap_check_pmd: Packet loss (16%) exceeded 10
05-10-18 20:20:01  wap_check_pmd: Table 42 is empty! Trying to populate it:
default via 192.168.1.1 dev wlan0 src 192.168.1.200 metric 303
192.168.1.0/24 dev wlan0 proto kernel scope link src 192.168.1.200 metric 303
05-10-18 20:52:25  wap_check_pmd: Packet loss (30%) exceeded 10
06-10-18 15:15:15  wap_check_pmd: Packet loss (30%) exceeded 10
07-10-18 08:55:02  wap_check_pmd: Same IP for debian-transmission and pi:  and
16-10-18 19:21:53  wap_check_pmd: Same IP for debian-transmission and pi:  and
16-10-18 19:22:07  wap_check_pmd: Rebooting. [2]
27-10-18 11:30:20  wap_check_pmd: Packet loss (20%) exceeded 10

youtube-dl

Written by pmd - - no comments

youtube-dl is a usefull packet to download youtube video through command line. GitHub.

List what to download

First step is to list what youtube video you wanna download and convert to mp3 file:

2 files to put on a web server which are:

  1. liste.txt which must be chmod 777 (index.php will write links in this file)
  2. index.php
<!DOCTYPE html>
<html>
<head>
<title>youtube-dl</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
body {
width: 550px;
font-size: 75%;
}
p {
font-family: "Lucida Console", "Courier New", monospace;
white-space: nowrap
}
li {
font-family: "Lucida Console", "Courier New", monospace;
white-space: nowrap
}
hr {
border: 0;
border-bottom: 1px dashed #CCCCCC;
background: #FFFFFF;
}
input[type=text], select {
width: 80%;
padding: 12px 20px;
margin: 8px 0;
display: inline-block;
border: 1px solid #ccc;
border-radius: 4px;
box-sizing: border-box;
}

input[type=submit] {
width: 80%;
background-color: #4CAF50;
color: white;
padding: 14px 20px;
margin: 8px 0;
border: none;
border-radius: 4px;
cursor: pointer;
}

input[type=submit]:hover {
background-color: #45a049;
}

div {
border-radius: 5px;
background-color: #f2f2f2;
padding: 20px;
overflow:auto;
width: 500px;
}
</style>
</head>
<body>
<span style="white-space: nowrap">
<div>
<p>
<?php
if(isset($_POST['field1']))
{
$data = $_POST['field1'] . "\r\n";
$ret = file_put_contents('liste.txt', $data, FILE_APPEND | LOCK_EX);
if($ret === false) {
echo "There was an error writing this file.";
}
else {
echo "$ret bytes written to file.";
}
}
else {
echo "No post data to process.";
}
?>
</p>
</div>
<hr>

<div>

<p>Format to be respected:</p>
<ol>
<li>« https://www.youtube.com/watch?v=1YRW1QRKTBc »</li>
<li>« https://youtu.be/9cBtJYI6itg »</li>
<li>« https://soundcloud.com/hungry-music/nto-alter-ego »</li>
</ol>

<form action="index.php" method="POST">
<input type="text" id="fname" name="field1" placeholder="https://www.youtube.com/watch?v=1YRW1QRKTBc"><br />
<input type="submit" value="Submit">
</form>
</div>

<hr>

<div>
<p>Next link(s) to be downloaded and saved to mp3 files:</p>
<p>
<?php
echo nl2br(file_get_contents( "liste.txt" ));
?>
</p>
</div>

<hr>

<div>
<p>
Logs (last 200 lines): <br />
<?php
//echo nl2br(file_get_contents( "/path/to/history.txt" ));
echo nl2br(trim(implode("", array_slice(file("/path/to/history.txt"), -200))));
?>
</p>
</div>
</body>
</html>

Sources 1, 2

Secure input form

https://docs.nginx.com/nginx/admin-guide/security-controls/configuring-http-basic-authentication/
http://www.htaccesstools.com/htpasswd-generator/

location ^~ /youtube-dl {
     auth_basic           "Иди на хуй мозгоёб!!!";
     auth_basic_user_file /path/to/.htpasswd;
     location ~ \.php$ {
         include snippets/fastcgi-php.conf;
         fastcgi_pass unix:/run/php/php7.0-fpm.sock;
         }
 }

Restart nginx:

$ sudo service nginx restart

Download script

He depends on:

  • /path/to/liste_en_cours.txt
  • /path/to/history.txt
#!/usr/bin/bash
filename="$1"
liste_en_cours=/path/to/Downloads/youtube_auto/liste_en_cours.txt

cp -f $1 $liste_en_cours
sleep 1
echo -n > $1

echo "  " >> /path/to/Downloads/youtube_auto/history.txt
date >> /path/to/Downloads/youtube_auto/history.txt

while read -r line
do
    name="$(echo $line | sed 's/\r//g')"
    echo -n "$name | " >> /path/to/Downloads/youtube_auto/history.txt
    page="$(wget -O - $name)"
    echo $page | sed -n 's/.*<title>\(.*\)<\/title>.*/\1/ip;T;q' >> /path/to/Downloads/youtube_auto/history.txt

    /usr/local/bin/youtube-dl -f bestaudio $name --extract-audio --audio-format mp3 -o "/path/to/Downloads/youtube_auto/downloads/%(title)s.%(ext)s" | grep ffmpeg | grep mp3 | sed 's/.*\//===> /' | sed 's/mp3.*/mp3/' >> /path/to/Downloads/youtube_auto/history.txt

done < "$liste_en_cours"

mv -f /path/to/Downloads/youtube_auto/downloads/* /path/to/Music/youtube

#All big files goes to folder Mixes
for file in /path/to/Music/youtube/*; do
    SIZE="$(stat --printf="%s" "$file")"
    if (( $SIZE > 25000000 )); then
        mv -f "$file" /path/to/Music/Mixes
    fi
done

Source homemade. Now execute it with cron job by example.

 

Install Airsonic on Raspberry Pi 3

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Stand-alone WAR installation integrated within systemd

Let's see how to install a stand-alone Airsonic on a Raspberry 3 integrated with Systemd.

First of all, we need Java to be installed:

$ sudo apt-get updateinstall openjdk-8-jre

By following these systemd setup instructions, Airsonic will be available at http://localhost:8080/airsonic.

  1. Setup dedicated airsonic user:
    $ sudo useradd airsonic
  2. Setup Airsonic data dir:
    $ sudo mkdir /var/airsonic
    $ sudo chown airsonic /var/airsonic
  3. Download the stand-alone WAR:
    $ sudo wget https://github.com/airsonic/airsonic/releases/download/v10.1.1/airsonic.war --output-document=/var/airsonic/airsonic.war
  4. Setup systemd service:
    $ sudo wget https://raw.githubusercontent.com/airsonic/airsonic/master/contrib/airsonic.service -O /etc/systemd/system/airsonic.service
    $ sudo systemctl daemon-reload
    $ sudo systemctl start airsonic.service
    $ sudo systemctl enable airsonic.service
    $ sudo wget https://raw.githubusercontent.com/airsonic/airsonic/master/contrib/airsonic-systemd-env -O /etc/sysconfig/airsonic

    Note: On Debian systems you need to replace /etc/sysconfig with /etc/default)

  5. Go configure http://localhost:8080/airsonic.

Set up a reverse proxy: nginx

  1. Go edit nginx configuration:
    $ sudo nano /etc/nginx/sites-available/default
  2. location ^~ /airsonic {
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            #proxy_set_header X-Forwarded-Proto https;
            proxy_set_header Host $http_host;
            #proxy_max_temp_file_size 0;
            proxy_pass http://localhost:8080;
            #proxy_redirect http:// https://;
    }
  3. Restart nginx:
    $ sudo service nginx restart

Set up the transcoder

$ sudo apt-get install ffmpeg

Then we need to link Airsonic with the transcoder ffmpeg.

$ sudo mkdir /var/airsonic/transcode
$ cd /var/airsonic/transcode
$ sudo ln -s /usr/bin/ffmpeg /var/aisonic/transcode/ffmpeg
$ ls -alh
total 8.0K
drwxr-xr-x 2 airsonic airsonic 4.0K Jul 22 10:54 .
drwxr-xr-x 5 airsonic tomcat8  4.0K Jul 22 10:48 ..
lrwxrwxrwx 1 root     root       15 Jul 22 10:54 ffmpeg -> /usr/bin/ffmpeg
$ sudo chown -R airsonic:airsonic /var/airsonic
$ ls -alh
total 8.0K
drwxr-xr-x 2 airsonic airsonic 4.0K Jul 22 10:54 .
drwxr-xr-x 5 airsonic airsonic 4.0K Jul 22 10:48 ..
lrwxrwxrwx 1 airsonic airsonic   15 Jul 22 10:54 ffmpeg -> /usr/bin/ffmpeg

Interact with server from Android

I use the Ultrasonic application:
ultrasonic

Source 1, 2, 3,

Extra applications on LEDE (GL-AR150)

Written by pmd - - no comments

Transmission

  1. opkg update
  2. opkg install transmission-daemon-openssl transmission-web luci-app-transmission
  3. opkg install nano
  4. nano /etc/config/transmission
  5. chmod -R 777 /tmp/USB_KEY

It is necessary to make a swap file on AR150 otherwise you cannot access the web interface...

  1. cd /path/where/we/will/make/swap-file
  2. Create a 64MB swap-file:
    dd if=/dev/zero of=swap-file bs=1M count=64
  3. mkswap swap-file
  4. swapon swap-file
  5. Then go to LuCI to specify the swap file in System > Mount points to have it mounted at next router reboot.

For worldwide access add a rule in LEDE firewall:
Any tcp, udp
From any host in wan
To any router IP at port 9091 on this device

Source

Bandwidth Monitor (nlbw)

opkg install luci-app-nlbwmon

Aussi :

https://github.com/Kiougar/luci-wrtbwmon

LEDE/OpenWRT on GL-AR150

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How to upgrade GL-AR150 to Stock OpenWRT

  1. Connect to router using SSH
  2. # cd /tmp
  3. Check what is the last available release for GL-AR150 here.
  4. # wget http://downloads.lede-project.org/releases/17.01.4/targets/ar71xx/generic/lede-17.01.4-ar71xx-generic-gl-ar150-squashfs-sysupgrade.bin
  5. # sysupgrade lede-17.01.4-ar71xx-generic-gl-ar150-squashfs-sysupgrade.bin

Source

I installed this version: LEDE Reboot (17.01.4, r3560-79f57e422d).

How to upgrade all packets

opkg list-upgradable | cut -f 1 -d ' ' | xargs opkg upgrade

Sources 1, 2

Enabling remote SSH access on LEDE/OpenWRT

Configure Dropbear

  1. Go to the System / Administration page.
  2. Under “SSH Access”, for the default “Dropbear instance”, set “Interface” to “unspecified”.

This will cause dropbear to accept connections on all interfaces.

Open port 22 (or other)

  1. Go to the Network / Firewall / Traffic Rules.
  2. Scroll down to the “Open ports on router” section.
  3. Enter a name for this rule, e.g. “Allow-SSH-WAN”.
  4. Set “Protocol” to “TCP”.
  5. Enter “22” as the “External Port”.
  6. Click “Add”.
  7. Click “Save and Apply”.

Source

Using USB storage devices and FAT32&NTFS filesystems

  1. Connect to router using SSH
  2. # opkg update
  3. # opkg install kmod-usb-storage
  4. # opkg install usbutils
  5. # lsusb -t
    /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-platform/1p, 480M
       |__ Port 1: Dev 2, If 0, Class=Mass Storage, Driver=usb-storage, 480M
  6. To add support of FAT32 and NTFS (not tested yet) usb flash/disk drives:
    # opkg install kmod-fs-vfat ntfs-3g
  7. Then go to the LuCI administration page, System > Mount points, and configure :

Sources 1, 2, 3, 4, 5

Using the Huawei E3372 Hi-Link LTE Dongle with OpenWRT

Huawei E3372 and AR-150 have 192.168.8.1/24 IPv4 networks, change the LAN IP of AR-150.

  1. # opkg update && opkg install kmod-usb-net-cdc-ether usb-modeswitch
    Of course, an internet connection is needed through Ethernet or Wifi for this step. :(
  2. Then go to the LuCI administration page, Network > Interfaces > Add new interface...:
  3. In my case interface "eth2" is now available to configure:
  4. In tab Firewall Settings, add this new interface in the wan firewall-zone:
  5. Click on Connect of the new network 4G_LTE:
  6. Done, you even have access to the USB dongle administration page 192.168.8.1.

Source

DDNS

  1. # opkg install luci-app-ddns
  2. Go to LuCI administration interface > Services > Dynamic DNS.
  3. I used a Free DNS provider named freedns.afraid.org.

Source

Samba network share

  1. # opkg install luci-app-samba
  2. Go to LuCI administration interface > Services > Network Shares.
  3. Add shared directories:
    • Name: samba
    • Path: /Path/to/mounted/usb/key
    • Allowed user: empty
    • Create mask: 777
    • Directory mask: 777

Source

SFTP server

  1. # opkg update && opkg install openssh-sftp-server
  2. Use Filezilla or other to connect to sftp server.

Source

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