Difference between revisions of "Enhanced CTorrent and CTCS"
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*Download the latest source distribution of [http://www.rahul.net/dholmes/ctorrent/#download Enhanced CTorrent]. | *Download the latest source distribution of [http://www.rahul.net/dholmes/ctorrent/#download Enhanced CTorrent]. | ||
$ gunzip ctorrent-1.3.4-dnh2.2.tar.gz | $ gunzip ctorrent-1.3.4-dnh2.2.tar.gz | ||
− | $ tar xvf ctorrent-1.3.4-dnh2.2.tar.gz | + | $ tar xvf ctorrent-1.3.4-dnh2.2.tar.gz |
*If you are compiling in Scratchbox make sure to have <code>libstdc++.so</code> installed in for example <code>/usr/lib</code>. Either copy it from your Linkstation directly to the Scratchbox environment by using <code>scp</code> or install it from anywhere else. | *If you are compiling in Scratchbox make sure to have <code>libstdc++.so</code> installed in for example <code>/usr/lib</code>. Either copy it from your Linkstation directly to the Scratchbox environment by using <code>scp</code> or install it from anywhere else. | ||
*Enhanced CTorrent has very little dependencies therefore you should be able to do a simple: | *Enhanced CTorrent has very little dependencies therefore you should be able to do a simple: | ||
$ ./configure | $ ./configure | ||
$ make | $ make | ||
+ | |||
+ | Note: If you get a "C++ compiler cannot create executables" error while running ./configure, you are missing a few packages essential for compiling applications in your machine. Run | ||
+ | $ apt-get install build-essential | ||
+ | to fix the problem. | ||
+ | |||
+ | This works in Freelink (someone check for openlink?) | ||
==Pre-built binary== | ==Pre-built binary== | ||
− | A pre built ARM binary <code>ctorrent</code> is available from [http://downloads. | + | A pre built ARM binary <code>ctorrent</code> is available from [http://downloads.nas-central.org/Uploads/OldUploads/LS_Pro_temporary/Binaries/ LSPro Temporary Upload Folder] |
=CTorrent Control Server (CTCS)= | =CTorrent Control Server (CTCS)= | ||
Line 26: | Line 32: | ||
*Start the [http://www.rahul.net/dholmes/ctorrent/ctcs.html CTorrent Control Server] and publish the server at port 2780: | *Start the [http://www.rahul.net/dholmes/ctorrent/ctcs.html CTorrent Control Server] and publish the server at port 2780: | ||
$ ctcs -p 2780 > /dev/null & | $ ctcs -p 2780 > /dev/null & | ||
− | *Start <code>ctorrent</code> as a | + | *Start <code>ctorrent</code> as a background process downloading <code>torrent.torrent</code> subscribing at the locally running [http://www.rahul.net/dholmes/ctorrent/ctcs.html CTCS server] at port 2780 and ignoring any console output since we will be controlling it via a web-interface. |
$ ctorrent -S localhost:2780 torrent.torrent > /dev/null & | $ ctorrent -S localhost:2780 torrent.torrent > /dev/null & | ||
− | *On the remote system open up a webbrowser and surf to http://<ip>:2780 | + | *On some systems, you need to use 127.0.0.1 instead of localhost: |
+ | $ ctorrent -S 127.0.0.1:2780 torrent.torrent > /dev/null & | ||
+ | *On the remote system open up a webbrowser and surf to: | ||
+ | <pre>http://<linkstation-ip>:2780</pre> | ||
Line 39: | Line 48: | ||
#Start ctorrent with the correct command line parameters. | #Start ctorrent with the correct command line parameters. | ||
− | + | To semi-automate these tasks, the Bash script below will check a specified directory on your Linkstation for any newly added .torrent files and will spawn a new ctorrent process for it when the torrent was not already activated previously. This way you can start downloading a torrent simply by copying a .torrent file to a certain shared directory on your Linkstation. | |
+ | |||
+ | <pre> | ||
+ | #!/bin/bash | ||
+ | |||
+ | #-----------------------------------------------------------------------------# | ||
+ | # Activate/deactivates torrents Bash shell script # | ||
+ | #-----------------------------------------------------------------------------# | ||
+ | # | ||
+ | # Author: Sander van Woensel | ||
+ | # Description: Starts and stops ctorrent for any newly added or removed | ||
+ | # .torrent file found or not found in the path specified on the | ||
+ | # command line. | ||
+ | # | ||
+ | #-----------------------------------------------------------------------------# | ||
+ | |||
+ | #-----------------------------------------------------------------------------# | ||
+ | # Constants # | ||
+ | #-----------------------------------------------------------------------------# | ||
+ | EXIT_ERROR=1 | ||
+ | EXIT_OK=0 | ||
+ | |||
+ | CTORRENT_PORT=2780 | ||
+ | |||
+ | LOG_FILE="/var/log/$(basename $0 .sh).log" | ||
+ | |||
+ | ERROR_NO_CTORRENT="Cannot execute ctorrent. Make sure ctorrent is available via one of the\n paths in your PATH environment variable." | ||
+ | ERROR_INVALID_TORRENT_DIR="Invalid .torrent file directory specified." | ||
+ | |||
+ | #-----------------------------------------------------------------------------# | ||
+ | # Functions # | ||
+ | #-----------------------------------------------------------------------------# | ||
+ | |||
+ | # Prints script usage. | ||
+ | function usage | ||
+ | { | ||
+ | printf "Usage: $0 <path> | ||
+ | |||
+ | Spawns a ctorrent process for any new .torrent file in <path> not already | ||
+ | activated previously and stops all ctorrent processes from which the | ||
+ | .torrent file has been removed fom <path>. | ||
+ | |||
+ | path: Directory to check for new or removed .torrent files. | ||
+ | |||
+ | " | ||
+ | } | ||
+ | |||
+ | function log | ||
+ | { | ||
+ | echo "[$(date -R)] $@" >> "$LOG_FILE" | ||
+ | } | ||
+ | |||
+ | function error | ||
+ | { | ||
+ | printf "Error: $*\n\n" | ||
+ | usage | ||
+ | exit $EXIT_ERROR | ||
+ | } | ||
+ | |||
+ | # Waits until file ($1) does not change in size (and thus is fully copied). | ||
+ | function wait_till_file_uploaded | ||
+ | { | ||
+ | SIZE=-1 | ||
+ | while CURRENT_SIZE=$(ls -ld "$1" | awk '{print $5}') && [ $CURRENT_SIZE != $SIZE ]; do | ||
+ | sleep 2 | ||
+ | SIZE=$CURRENT_SIZE | ||
+ | done | ||
+ | } | ||
+ | |||
+ | # Spawn ctorrent for every new torrent file found. | ||
+ | function activate_new | ||
+ | { | ||
+ | PROCESSING=$(ps -df | awk '$8 ~ /ctorrent/ {for(i=11; i<=NF; i++) { printf $i" ";}}') | ||
+ | |||
+ | # Start new torrents found in $1. | ||
+ | # Take into account file names with spaces (read command reads one full line at the time). | ||
+ | ls -d1 *.torrent *.tor 2>/dev/null | while read FILE; do | ||
+ | if [ -f "$FILE" ] && [ -r "$FILE" ]; then | ||
+ | # If file is NOT found in the currently processing file list, then | ||
+ | # spawn a ctorrent process. | ||
+ | # Uses grep -F to interpret $FILE as a fixed string | ||
+ | ACTIVATED=$(echo "$PROCESSING" | grep -F "$FILE") | ||
+ | if [ "x$ACTIVATED" == "x" ]; then | ||
+ | wait_till_file_uploaded "$FILE" | ||
+ | log "Spawning ctorrent: ctorrent -S localhost:$CTORRENT_PORT \"$FILE\" &" | ||
+ | ctorrent -S localhost:$CTORRENT_PORT "$FILE" > /dev/null 2>> "$LOG_FILE" & | ||
+ | fi | ||
+ | fi | ||
+ | done | ||
+ | |||
+ | } | ||
+ | |||
+ | # Kills every ctorrent process from which the .torrent file has been removed. | ||
+ | function deactivate_removed | ||
+ | { | ||
+ | |||
+ | ps -df | awk '$8 ~ /ctorrent/ { printf $2" "; for(i=11; i<=NF; i++) { printf $i" ";}; printf "\n";}' | while read PID FILE; do | ||
+ | # If the .torrent file belonging to the currently activated ctorrent process has been | ||
+ | # removed, stop the ctorrent process. | ||
+ | if [ ! -f "$FILE" ]; then | ||
+ | log "Terminating ctorrent for \"$FILE\": kill -TERM $PID" | ||
+ | # Send the terminate signal to the correct ctorrent process (clean shutdown). | ||
+ | kill -TERM $PID 2>> "$LOG_FILE" | ||
+ | fi | ||
+ | done | ||
+ | } | ||
+ | |||
+ | #-----------------------------------------------------------------------------# | ||
+ | # Main # | ||
+ | #-----------------------------------------------------------------------------# | ||
+ | |||
+ | # Did the user requested the help text? | ||
+ | if [ $# != 1 ] || [ "$1" == -h ] || [ "$1" == --help ]; then | ||
+ | usage | ||
+ | exit $EXIT_OK | ||
+ | fi | ||
+ | |||
+ | # Check if ctorrent can be executed. | ||
+ | if [ "x$(which ctorrent)" == "x" ]; then | ||
+ | error "$ERROR_NO_CTORRENT" | ||
+ | fi | ||
+ | |||
+ | # Check if the specified directory is available and can be read. | ||
+ | if [ $# != 1 ] || [ ! -d "$1" ] || [ ! -r "$1" ]; then | ||
+ | error "$ERROR_INVALID_TORRENT_DIR" | ||
+ | fi | ||
+ | |||
+ | # Change directory to the .torrent directory. This removes the need | ||
+ | # to concatenate any paths when executing ls ,etc. | ||
+ | cd "$1" | ||
+ | |||
+ | # All tests succeeded; spawn ctorrent. | ||
+ | activate_new "$1" | ||
+ | deactivate_removed "$1" | ||
+ | |||
+ | </pre> | ||
+ | |||
+ | |||
+ | ==Installation== | ||
+ | *Login your Linkstation as "root" via ssh or telnet. | ||
+ | *Copy the above text in a new file on your linkstation and save it as <code>/etc/cron/cron.d/activate_torrents.sh</code> | ||
+ | *Make sure the script is executable for the user "root": | ||
+ | # chmod u+x /etc/cron/cron.d/activate_torrents.sh | ||
+ | *Add the script to the cron table so it gets executed at a specified interval. The following command will open up the cron table in your default editor: | ||
+ | # crontab -e | ||
+ | *Add the line mentioned below to the end of the crontab file: | ||
+ | */05 * * * * /etc/cron/cron.d/activate_torrents.sh /mnt/disk1/<share>/torrents | ||
+ | * This will check for new .torrent files in the directory <code>/mnt/disk1/<share>/torrents</code> every 5 minutes and will start a new ctorrent session when necessary. | ||
+ | * On your computer copy a .torrent file to the share: <code><share>/torrents</code>, wait 5 minutes and check if the ctorrent process started downloading by executing: | ||
+ | # ps -df | grep ctorrent | ||
+ | * You can also check CTCS by browsing to: <code>http://<linkstation-ip>:2780</code>. | ||
+ | |||
+ | |||
+ | ==Starting CTCS automatically== | ||
+ | <sup>Thanks to [[User:Kaiten]] for the example using [[Open Stock Firmware#Create a startup script & config for sshd.|sshd]]</sup> | ||
+ | |||
+ | *Create a file in /etc/init.d named ctcs.sh: | ||
+ | |||
+ | vi /etc/init.d/ctcs.sh | ||
+ | |||
+ | *The file should contain the following. If you put ctcs somewhere other than /usr/local/bin/, than you will need to change the contents accordingly: | ||
+ | |||
+ | <pre> | ||
+ | #! /bin/sh | ||
+ | # Start/Stop/Restart the ctorrent control server | ||
+ | # | ||
+ | # | ||
+ | |||
+ | test -f /usr/local/bin/ctcs || exit 0 | ||
+ | |||
+ | case "$1" in | ||
+ | start) echo -n "Start services: ctcs" | ||
+ | /usr/local/bin/ctcs -p 2780 > /dev/null & | ||
+ | ;; | ||
+ | stop) echo -n "Stop services: ctcs" | ||
+ | killall ctcs | ||
+ | ;; | ||
+ | restart) | ||
+ | $0 stop | ||
+ | $0 start | ||
+ | ;; | ||
+ | *) echo "Usage: $0 start|stop|restart" | ||
+ | exit 1 | ||
+ | ;; | ||
+ | esac | ||
+ | exit 0 | ||
+ | </pre> | ||
+ | |||
+ | *Save the file and quit. Then change the file so that it is executable: | ||
+ | |||
+ | chmod 0755 /etc/init.d/ctcs.sh | ||
+ | |||
+ | *Now you will need to edit the main startup script to add this. If you have not already, back up rcS: | ||
+ | |||
+ | cp /etc/init.d/rcS /etc/init.d/rcS.bak | ||
+ | |||
+ | *Now to edit: | ||
+ | |||
+ | vi /etc/init.d/rcS | ||
+ | |||
+ | *Add ctcs.sh to the line containing: | ||
+ | |||
+ | <pre> | ||
+ | echo "** step3 **" | ||
+ | for cmd in micon_setup.sh atalk.sh ftpd.sh httpd.sh smb.sh clientUtil_servd.sh lsprcvd.sh daemonwatch.sh cron.sh logchkd.sh checkconfig.sh nfs.sh modules.sh set_quota.sh sshd.sh | ||
+ | do | ||
+ | exec_sh $cmd | ||
+ | done | ||
+ | </pre> | ||
+ | |||
+ | * Like this: | ||
+ | |||
+ | <pre> | ||
+ | echo "** step3 **" | ||
+ | for cmd in micon_setup.sh atalk.sh ftpd.sh httpd.sh smb.sh clientUtil_servd.sh lsprcvd.sh daemonwatch.sh cron.sh logchkd.sh checkconfig.sh nfs.sh modules.sh set_quota.sh sshd.sh ctcs.sh | ||
+ | do | ||
+ | exec_sh $cmd | ||
+ | done | ||
+ | </pre> | ||
− | + | *Now, ctcs will launch on startup. It can be accessed from http://''linkstationIP'':2780/ | |
− | * | + | |
=Related articles= | =Related articles= |
Latest revision as of 13:01, 3 January 2009
Enhanced CTorrent is a BitTorrent client implemented in C++ to be lightweight and quick and is the continuation of its parent CTorrent.
Enhanced CTorrent has an average CPU load of 4.2% at a download rate of 100KB/s and an upload rate of 100KB/s on an ARM equiped Linkstation Pro.
Contents
LSPro (arm9) - OpenLink
Building from scratch
- Make sure you are comfotable using either LS-GL Custom Firmware Development#Native_Toolchain or LS-GL Custom Firmware Development#ScratchBox
- Download the latest source distribution of Enhanced CTorrent.
$ gunzip ctorrent-1.3.4-dnh2.2.tar.gz $ tar xvf ctorrent-1.3.4-dnh2.2.tar.gz
- If you are compiling in Scratchbox make sure to have
libstdc++.so
installed in for example/usr/lib
. Either copy it from your Linkstation directly to the Scratchbox environment by usingscp
or install it from anywhere else. - Enhanced CTorrent has very little dependencies therefore you should be able to do a simple:
$ ./configure $ make
Note: If you get a "C++ compiler cannot create executables" error while running ./configure, you are missing a few packages essential for compiling applications in your machine. Run $ apt-get install build-essential to fix the problem.
This works in Freelink (someone check for openlink?)
Pre-built binary
A pre built ARM binary ctorrent
is available from LSPro Temporary Upload Folder
CTorrent Control Server (CTCS)
To control and manage your torrents from an external computer you can make use of the Web interface provided by the CTorrent Control Server (CTCS). This is a Perl script which needs no further configuration.
Typical Setup
- Make sure the binary ctorrent is available via your
PATH
environment varaiable. - Start the CTorrent Control Server and publish the server at port 2780:
$ ctcs -p 2780 > /dev/null &
- Start
ctorrent
as a background process downloadingtorrent.torrent
subscribing at the locally running CTCS server at port 2780 and ignoring any console output since we will be controlling it via a web-interface.
$ ctorrent -S localhost:2780 torrent.torrent > /dev/null &
- On some systems, you need to use 127.0.0.1 instead of localhost:
$ ctorrent -S 127.0.0.1:2780 torrent.torrent > /dev/null &
- On the remote system open up a webbrowser and surf to:
http://<linkstation-ip>:2780
For further information on how to start, stop and manage ctorrent please read the CTorrent user's guide.
Automatic downloading of torrents
It is very desireable to start a torrent more userfriendly at a remote machine than to manually:
- Download the torrent on the remote machine to a Linkstation share.
- Do a remote login to the Linkstation.
- Start ctorrent with the correct command line parameters.
To semi-automate these tasks, the Bash script below will check a specified directory on your Linkstation for any newly added .torrent files and will spawn a new ctorrent process for it when the torrent was not already activated previously. This way you can start downloading a torrent simply by copying a .torrent file to a certain shared directory on your Linkstation.
#!/bin/bash #-----------------------------------------------------------------------------# # Activate/deactivates torrents Bash shell script # #-----------------------------------------------------------------------------# # # Author: Sander van Woensel # Description: Starts and stops ctorrent for any newly added or removed # .torrent file found or not found in the path specified on the # command line. # #-----------------------------------------------------------------------------# #-----------------------------------------------------------------------------# # Constants # #-----------------------------------------------------------------------------# EXIT_ERROR=1 EXIT_OK=0 CTORRENT_PORT=2780 LOG_FILE="/var/log/$(basename $0 .sh).log" ERROR_NO_CTORRENT="Cannot execute ctorrent. Make sure ctorrent is available via one of the\n paths in your PATH environment variable." ERROR_INVALID_TORRENT_DIR="Invalid .torrent file directory specified." #-----------------------------------------------------------------------------# # Functions # #-----------------------------------------------------------------------------# # Prints script usage. function usage { printf "Usage: $0 <path> Spawns a ctorrent process for any new .torrent file in <path> not already activated previously and stops all ctorrent processes from which the .torrent file has been removed fom <path>. path: Directory to check for new or removed .torrent files. " } function log { echo "[$(date -R)] $@" >> "$LOG_FILE" } function error { printf "Error: $*\n\n" usage exit $EXIT_ERROR } # Waits until file ($1) does not change in size (and thus is fully copied). function wait_till_file_uploaded { SIZE=-1 while CURRENT_SIZE=$(ls -ld "$1" | awk '{print $5}') && [ $CURRENT_SIZE != $SIZE ]; do sleep 2 SIZE=$CURRENT_SIZE done } # Spawn ctorrent for every new torrent file found. function activate_new { PROCESSING=$(ps -df | awk '$8 ~ /ctorrent/ {for(i=11; i<=NF; i++) { printf $i" ";}}') # Start new torrents found in $1. # Take into account file names with spaces (read command reads one full line at the time). ls -d1 *.torrent *.tor 2>/dev/null | while read FILE; do if [ -f "$FILE" ] && [ -r "$FILE" ]; then # If file is NOT found in the currently processing file list, then # spawn a ctorrent process. # Uses grep -F to interpret $FILE as a fixed string ACTIVATED=$(echo "$PROCESSING" | grep -F "$FILE") if [ "x$ACTIVATED" == "x" ]; then wait_till_file_uploaded "$FILE" log "Spawning ctorrent: ctorrent -S localhost:$CTORRENT_PORT \"$FILE\" &" ctorrent -S localhost:$CTORRENT_PORT "$FILE" > /dev/null 2>> "$LOG_FILE" & fi fi done } # Kills every ctorrent process from which the .torrent file has been removed. function deactivate_removed { ps -df | awk '$8 ~ /ctorrent/ { printf $2" "; for(i=11; i<=NF; i++) { printf $i" ";}; printf "\n";}' | while read PID FILE; do # If the .torrent file belonging to the currently activated ctorrent process has been # removed, stop the ctorrent process. if [ ! -f "$FILE" ]; then log "Terminating ctorrent for \"$FILE\": kill -TERM $PID" # Send the terminate signal to the correct ctorrent process (clean shutdown). kill -TERM $PID 2>> "$LOG_FILE" fi done } #-----------------------------------------------------------------------------# # Main # #-----------------------------------------------------------------------------# # Did the user requested the help text? if [ $# != 1 ] || [ "$1" == -h ] || [ "$1" == --help ]; then usage exit $EXIT_OK fi # Check if ctorrent can be executed. if [ "x$(which ctorrent)" == "x" ]; then error "$ERROR_NO_CTORRENT" fi # Check if the specified directory is available and can be read. if [ $# != 1 ] || [ ! -d "$1" ] || [ ! -r "$1" ]; then error "$ERROR_INVALID_TORRENT_DIR" fi # Change directory to the .torrent directory. This removes the need # to concatenate any paths when executing ls ,etc. cd "$1" # All tests succeeded; spawn ctorrent. activate_new "$1" deactivate_removed "$1"
Installation
- Login your Linkstation as "root" via ssh or telnet.
- Copy the above text in a new file on your linkstation and save it as
/etc/cron/cron.d/activate_torrents.sh
- Make sure the script is executable for the user "root":
# chmod u+x /etc/cron/cron.d/activate_torrents.sh
- Add the script to the cron table so it gets executed at a specified interval. The following command will open up the cron table in your default editor:
# crontab -e
- Add the line mentioned below to the end of the crontab file:
*/05 * * * * /etc/cron/cron.d/activate_torrents.sh /mnt/disk1/<share>/torrents
- This will check for new .torrent files in the directory
/mnt/disk1/<share>/torrents
every 5 minutes and will start a new ctorrent session when necessary. - On your computer copy a .torrent file to the share:
<share>/torrents
, wait 5 minutes and check if the ctorrent process started downloading by executing:
# ps -df | grep ctorrent
- You can also check CTCS by browsing to:
http://<linkstation-ip>:2780
.
Starting CTCS automatically
Thanks to User:Kaiten for the example using sshd
- Create a file in /etc/init.d named ctcs.sh:
vi /etc/init.d/ctcs.sh
- The file should contain the following. If you put ctcs somewhere other than /usr/local/bin/, than you will need to change the contents accordingly:
#! /bin/sh # Start/Stop/Restart the ctorrent control server # # test -f /usr/local/bin/ctcs || exit 0 case "$1" in start) echo -n "Start services: ctcs" /usr/local/bin/ctcs -p 2780 > /dev/null & ;; stop) echo -n "Stop services: ctcs" killall ctcs ;; restart) $0 stop $0 start ;; *) echo "Usage: $0 start|stop|restart" exit 1 ;; esac exit 0
- Save the file and quit. Then change the file so that it is executable:
chmod 0755 /etc/init.d/ctcs.sh
- Now you will need to edit the main startup script to add this. If you have not already, back up rcS:
cp /etc/init.d/rcS /etc/init.d/rcS.bak
- Now to edit:
vi /etc/init.d/rcS
- Add ctcs.sh to the line containing:
echo "** step3 **" for cmd in micon_setup.sh atalk.sh ftpd.sh httpd.sh smb.sh clientUtil_servd.sh lsprcvd.sh daemonwatch.sh cron.sh logchkd.sh checkconfig.sh nfs.sh modules.sh set_quota.sh sshd.sh do exec_sh $cmd done
- Like this:
echo "** step3 **" for cmd in micon_setup.sh atalk.sh ftpd.sh httpd.sh smb.sh clientUtil_servd.sh lsprcvd.sh daemonwatch.sh cron.sh logchkd.sh checkconfig.sh nfs.sh modules.sh set_quota.sh sshd.sh ctcs.sh do exec_sh $cmd done
- Now, ctcs will launch on startup. It can be accessed from http://linkstationIP:2780/
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