Dreambox Torrent Script

**RHCP** · 28-02-08, 03:26 AM

Today i decided to write a script which would simplify the process of remotely initiating a torrent download on my dreambox. The script just cuts out the need to use telnet and the bash prompt. In the off chance that someone wants to do something similar, this is how i did it.
I'm using the PLI Iolite 2008 Edition image on my 7020 and couldn't find a torrent plugin, so i had to use ctorrent.

The script is launched via crond at midnight (to use up my off peak mbs) or any time via telnet. It checks if .torrent files exist in a specific folder on the HDD, then proceeds to download them according to the settings specified in the script. Hence, i FTP .torrent files to the dbox and the downloads start at midnight.

ctorrent is available (only for the 7020).

Either extract the contents of the 'ctorrent'.gz file to the /tmp directory, and then install via the 'software management/manual addons'
or
copy the .gz file to /tmp directory, then from telnet run

Code:

gunzip /tmp/ctorrent_1.3.4-r6_powerpc.ipk.gz
ipkg install /tmp/ctorrent_1.3.4-r6_powerpc.ipk

Here is my simple script

Code:

#!/bin/sh
stime=1 	#Seed Time hrs
port=1325 	#Port +1 for each simultaneous download (ie 5000, 5001, 5002...5010...)
cache=1 	#MBs torrent cache
URate=18 	#In KB/S Set to 10% lower than max Up rate - Split evenly amongst multiple downloads
DRate=999 	#In KB/S Split evenly amongst multiple downloads - Set really high to max it
MDownload=3 #Max Simultaneous downloads - any 'leftover' torrents will be kept and downloaded the next time
TDir="/media/hdd/Torrents"				#Where .Torrent files are uploaded/kept
TDown="/media/hdd/Torrents/Downloads" 	#Download dir
LDir="/media/hdd/Torrents/Logs" 		#Log dir
DelTor=Yes	# Yes or No - Delete .Torrent file after starting download
Log=Yes		# Yes or No - Logs output of ctorrent for each download to a file in log dir

mkdir -p "$TDir"
mkdir -p "$TDown"
if [ $Log = Yes ]
then
	mkdir -p "$LDir"
	time=`date -I`
fi

cd "$TDir"
ls -1 *.torrent > tor1_temp
if [ $? = 0 ]
then
	TorData=`cat tor1_temp | tr '\n' '|'` 
	lines=`wc -l tor1_temp| awk '{print $1}`
	rm tor1_temp
	if  [ $MDownload -lt $lines ] 
	then
		lines=$MDownload
	fi

	div=1
	while [ $div -lt $lines ]
	do
		div=`expr $div + 1`
	done
	
	DRate=`expr $DRate / $div`
	URate=`expr $URate / $div`
	count=1
	cd "$TDown"
	while [ $count -le $lines ]
	do
		Tor=`echo $TorData | cut -f$count -d"|"`
		if [ $Log = Yes ]
		then
	 		ctorrent -e $stime -C $cache -p $port -D $DRate -U $URate "$TDir/$Tor" > "$LDir/$time.$Tor".txt &
		else
			ctorrent -e $stime -C $cache -p $port -D $DRate -U $URate "$TDir/$Tor" > /dev/null &
	   	fi
 	   	
 	 	if [ $DelTor = Yes ]
 	    then
 	    	rm "$TDir/$Tor"
 	    fi
 	    port=`expr $count + $port`
		count=`expr $count + 1`
	done
else
	rm tor1_temp
	exit
fi

Adjust the variables and save the script somewhere using a unix compatible editor, i call it dts.sh and keep it in /etc
The only way i could successfully launch via crond was to edit /etc/cron/crontabs/root using a unix editor to

Code:

#SHELL=/bin/sh
0 0 * * *  /etc/dts.sh

from the telnet stop and start crond so the changes may take effect

Code:

killall crond
crond

This explains crond and the format it uses.

I have no doubt there more efficient and correct ways of writing this script, but before today i had never touched a bash script and knew only a couple of unix commands...

Cheers, RHCP.

**jonc** · 28-02-08, 12:50 PM

Originally Posted by RHCP

Today i decided to write a script which would simplify the process of remotely initiating a torrent download on my dreambox.

Well done indeed.. Thanks for this maybe you should also post this on the PLi site under 3rd party development -

Great work..

**lgarrido** · 11-08-08, 08:27 AM

Hi,

Thanks for the great script. I took it a made same improvements important for me:

-Ability to handle torrents that take more than 24 hours to download. The previous script opens a new ctorrent process each time it is executed and the .torrent file exists
-Connection to CTCS

The new script

Code:

#!/bin/sh
stime=1 	#Seed Time hrs
port=1325 	#Port +1 for each simultaneous download (ie 5000, 5001, 5002...5010...)
cache=1 	#MBs torrent cache
URate=18 	#In KB/S Set to 10% lower than max Up rate - Split evenly amongst multiple downloads
DRate=999 	#In KB/S Split evenly amongst multiple downloads - Set really high to max it
MDownload=3 #Max Simultaneous downloads - any 'leftover' torrents will be kept and downloaded the next time
TDir="/media/hdd/Torrents"				#Where .torrent files are uploaded/kept
TDown="/media/hdd/Torrents/Downloads" 	#Download dir
LDir="/tmp" 		#Log dir
DelTor=No	# Yes or No - Delete .Torrent file after starting download
Log=Yes		# Yes or No - Logs output of ctorrent for each download to a file in log dir
CtcsURL=192.168.1.2:2780  #CTCS Server URL. If you what to control your torrents via the CTCS web interface

mkdir -p "$TDir"
mkdir -p "$TDown"

cd "$TDir"
ls -1 *.torrent > tor1_temp
if [ $? = 0 ]
then
	TorData=`cat tor1_temp | tr '\n' '|'` 
	lines=`wc -l tor1_temp| awk '{print $1}`
	rm tor1_temp
	if  [ $MDownload -lt $lines ] 
	then
		lines=$MDownload
	fi

	div=1
	while [ $div -lt $lines ]
	do
		div=`expr $div + 1`
	done
	
	DRate=`expr $DRate / $div`
	URate=`expr $URate / $div`
	count=1
	cd "$TDown"
	while [ $count -le $lines ]
	do
		Tor=`echo $TorData | cut -f$count -d"|"`
		processName=`echo $Tor | cut -c 1-20`
		resultcode=`ps | grep "$processName" |grep "ctorrent" |wc -l`
		if [ $resultcode = 0 ]
		then
			if [ $Log = Yes ]
			then
				ctorrent -X "$processName" -d -e $stime -C $cache -p $port -D $DRate -U $URate -S $CtcsURL  "$TDir/$Tor" >> "$LDir/$Tor".txt &
				echo Starting to download $Tor >> "$LDir/$Tor".txt 
			else
				ctorrent -X "$processName" -d -e $stime -C $cache -p $port -D $DRate -U $URate -S $CtcsURL  "$TDir/$Tor" > /dev/null &
			fi
		else     
		       if [ $Log = Yes ]
		       then
                          echo $Tor is allready being downloaded >> "$LDir/$Tor".txt 
		       fi
		fi
 	   	
 	    if [ $DelTor = Yes ]
 	    then
 	    	mv "$TDir/$Tor" "$TDir/$Tor.OLD"
 	    fi
 	    port=`expr $count + $port`
		count=`expr $count + 1`
	done
else
	rm tor1_temp
	exit
fi

Thanks.

**RHCP** · 11-08-08, 07:48 PM

Thanks for the improvements, i like what you have done. Couple of questions, you are obviously using a different ctorrent to me, as the

Code:

-X

switch in the ctorrent (in first post) im using gives an error as it displays meta-tag info. In enhanced ctorrent it supposedly runs $processName as a command. What ctorrent are you using, and what does the -X switch do?

What platform are you running this on? Dreambox? If your using enhanced ctorrent, i would love to get a copy of a compiled version (i have no linux setup atm and don't want to compile it).

Also, what does the

Code:

ctorrent -X "$processName"

do? If -X switch actually runs the $processName (which is first 20 letters of torrent title) as a command after download completion then i don't get what it does, or is -X used to give ctorrent process name (in ps) some part of the torrent name to identify it? Which would make sense as that's what

Code:

resultcode=`ps | grep "$processName" |grep "ctorrent" |wc -l`
		if [ $resultcode = 0 ]

seems to be looking for.

Also, i had a problem with my script when downloading files which had long titles or certain characters...i did pinpoint the problem, but i haven't used it in ages and have now forgotten what caused it :P Have you experienced anything like this?

Thanks, RHCP.

**lgarrido** · 11-08-08, 11:49 PM

Hi,

I use enhanced CTorrent on a Enigma 2 dreambox (DM800).

The reason to use the -X parameter is to identify the different ctorrent processes when executing the ps command. The output of the ps command, when executed as a cron, is generated with a limitation inthe number of columns (at least on my dreambox)

Code:

 ......
 2768 root       4244 S   /usr/bin/CCcam_2.0.9 
  864 root       9780 S   ctorrent -X GK.S01E01.HDTV.XviD- -d -e 48 -C 16 -p 1326 -D 199 -U 3 -S 192.168.
  885 root      15204 S   ctorrent -X GK.S01E02.HDTV.XviD- -d -e 48 -C 16 -p 1328 -D 199 -U 3 -S 192.168.
  906 root      19764 S   ctorrent -X GK.S01E03.HDTV.XviD- -d -e 48 -C 16 -p 1331 -D 199 -U 3 -S 192.168.
 2647 root        372 S   /bin/sh /usr/bin/enigma2.sh
.....
 3256 root      12492 S   ctorrent -X GK.S01E04.HDTV.XviD- -d -e 48 -C 16 -p 1331 -D 249 -U 4 -S 192.168.
10523 root        580 S   telnetd

As you see, the right part of the ctorrent commans is not available. Very strange because happens to me only for ps commands executed in a cron. I googled but did not find a solution.

So the only way to kwow the .torrent files currently being downloaded by ctorrent processes is identifying them at the left part of the process command.

It's a pity because I was planning to use -X to run a script to delete *.torrent files but this was the only solution I found to associante .torrents to unix processes. Of course temp files could be used.... but I preffer current solution.

To avoid problems with long names or certain characters all references to file names must be quoted ("file name").

While coding the script I did not get any errors with the sample ctorrents I used, but reviewing the script I found a potential source of problems:

Code:

processName=`echo $Tor | cut -c 1-20`

Should be changed to:

Code:

processName=`echo "$Tor" | cut -c 1-20`

I am not at home now and I cannot test this, but I think this is safer.

Lgarrido

**hiren** · 06-07-09, 10:56 AM

Hi, i'm having some probmelms to reach /etc/cron/crontabs/root my telnet session just says "permission denied" does anyone know how to solve this ?

i've also tried to just type /etc/dts.sh, but then it says "-sh: /etc/dts.sh: not found
"
please help,
Regards mr.Patel

**jgm** · 06-07-09, 01:23 PM

Originally Posted by hiren

Hi, i'm having some probmelms to reach /etc/cron/crontabs/root my telnet session just says "permission denied" does anyone know how to solve this ?
Regards mr.Patel

Try "crontab -e" to edit or "crontab -l" to list.

**hiren** · 06-07-09, 07:47 PM

Hi!

thanks it worked, but i would like to start the scritp manually and not like a timer.

so the app starts to download all torrents in the torrent folder and puts the files in the downloads folder. when i type a command in to the telnet box.

I'm using pli jade3 if thats intressting.

Thank you for the help
edit:
i have tried to save the
#SHELL=/bin/sh
***** /etc/dts.sh

but i don't know how to save after i've writtent crontab-e

i'm using putty on windows xp

**jgm** · 07-07-09, 05:03 PM

Originally Posted by hiren

Hi!

thanks it worked, but i would like to start the scritp manually and not like a timer.

To start it manually, just telnet to the box & enter "/etc/dts.sh"

**hiren** · 07-07-09, 10:06 PM

yeah, but my box just says that ther is no. /etc/dts.sh

and i'm 100% shure that i've put it there.

**nfnovice** · 08-07-09, 08:16 AM

chmod 755 /etc/dts.sh ???

**jgm** · 08-07-09, 12:49 PM

Originally Posted by hiren

yeah, but my box just says that ther is no. /etc/dts.sh

and i'm 100% shure that i've put it there.

Telnet into the box & enter "ll /etc"

You should see a line something like:
-rwxr-xr-x 1 root root 80 Jan 1 1970 dts.sh

in the output. The important parts are -rwxr-xr-x (the x's show that it is executable by owner (root), member of the group (root) and everyone else) and the last (dts.sh).

**hiren** · 08-07-09, 11:19 PM

thanks, but yes i've already changed the chmod

the line is

-rwxr-xr-x 1 root root 1741 Jul 6 17:33 dts.sh*

wich seems to be correct?

but still when i write

/etc/dts.sh

the answear is -sh: /etc/dts.sh: not found

thank you for all help untill now

**jgm** · 08-07-09, 11:58 PM

Can you type in the following and show us the result:

cd /
find . -name dts.sh

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