torrent tools
This is a collection of tools for creating and manipulating BitTorrent v2
torrent files. torrent-new can create hybrid torrents, but the other tools
for manipulating torrents only supports v2.
- torrent-new
- Creates new torrent files
- torrent-merge
- merges multiple torrents and creates a new torrent with all files in it
- torrent-add
- add a new file to an existing torrent
- torrent-modify
- remove and rename files from a torrent. Add and remove trackers, DHT nodes, web sedds and other properties.
- torrent-print
- print the content of a .torrent file to stdout
examples
Here's a demonstration of some of the things one can do with these tools. First, create two files to test:
$ dd count=16000 if=/dev/random of=file-number-1 $ dd count=32000 if=/dev/random of=file-number-2
create a torrent
We can create a torrent from one of them (this is a v2-only torrent):
$ ./torrent-new -o torrent-1.torrent -2 -m file-number-1 /Users/arvid/Documents/dev/torrent-tools/file-number-1 249/250
See what it looks like:
$ ./torrent-print torrent-1.torrent
piece-count: 250
piece length: 32768
info hash: v2: 9a12b62cf2717146eeaf5519cd5fdc981a251fd31df1f92d2a664f5320513ec2
comment:
created by: torrent-tools
name: file-number-1
number of files: 1
files:
8192000 ---- file-number-1
extend a torrent
Now, we can extend torrent-1.torrent, by adding another file to it. This is done
without re-hashing file-number-1, just the file that's being added:
$ ./torrent-add torrent-1.torrent -o torrent-2.torrent -m file-number-2 piece size: 32768 adding file-number-2 499/500 -> writing to torrent-2.torrent
The new torrent looks like this:
$ ./torrent-print torrent-2.torrent
piece-count: 750
piece length: 32768
info hash: v2: 982f09b470be0e2218147b0a1aa2fb24c42cfde2c6fbb922fcbf3eba1b9089bb
comment:
created by: torrent-tools
name: file-number-1
number of files: 2
files:
8192000 ---- file-number-1/file-number-1
16384000 ---- file-number-1/file-number-2
merge torrents
Create two torrents, one file each:
$ ./torrent-new -o 1.torrent -2 -m file-number-1 /Users/arvid/Documents/dev/torrent-tools/file-number-1 249/250 $ ./torrent-new -o 2.torrent -2 -m file-number-2 /Users/arvid/Documents/dev/torrent-tools/file-number-2 249/250
Merge them:
$ ./torrent-merge -o merged.torrent 1.torrent 2.torrent -> 1.torrent 8545cbbe942e7c0d8061a8ed31b0badb32feadc1f4963ec2f6643df30d07500b 8192000 file-number-1 -> 2.torrent d64405bd94ec88f708481612a1dd35203d88d864191b0a584e2ebc27cfa336dd 16384000 file-number-2 new piece size: 65536 -> writing to merged.torrent
The new torrent now contains both files:
$ ./torrent-print merged.torrent
piece-count: 375
piece length: 65536
info hash: v2: a2898893986df997ee10c7765a8ae8b523460e18363b89c8c6ba15070b9c985c
comment:
created by: torrent-tools
name: file-number-1
number of files: 2
files:
8192000 ---- file-number-1/file-number-1
16384000 ---- file-number-1/file-number-2
modify torrents
The merged.torrent has a root directory called file-number-1:
$ ./torrent-print --tree merged.torrent
piece-count: 375
piece length: 65536
info hash: v2: a2898893986df997ee10c7765a8ae8b523460e18363b89c8c6ba15070b9c985c
comment:
created by: torrent-tools
name: file-number-1
number of files: 2
files:
└ file-number-1
8192000 ---- ├ file-number-1
16384000 ---- └ file-number-2
Let's rename the root folder to "foobar":
$ ./torrent-modify --name foobar -o merged2.torrent merged.torrent
The new torrent looks like this:
$ ./torrent-print --tree merged2.torrent
piece-count: 375
piece length: 65536
info hash: v2: b2adfd009b31bc56f7af9f9962fc9fdc1d80282e598e8d8857c7e82aa9b55cd4
comment:
created by: torrent-tools
name: foobar
number of files: 2
files:
└ foobar
8192000 ---- ├ file-number-1
16384000 ---- └ file-number-2
Now, set a comment:
$ ./torrent-modify --comment "This is a foobar" -o merged3.torrent merged2.torrent
The new torrent looks like this:
$ ./torrent-print --tree merged3.torrent
piece-count: 375
piece length: 65536
info hash: v2: b2adfd009b31bc56f7af9f9962fc9fdc1d80282e598e8d8857c7e82aa9b55cd4
comment: This is a foobar
created by: torrent-tools
name: foobar
number of files: 2
files:
└ foobar
8192000 ---- ├ file-number-1
16384000 ---- └ file-number-2