Add support for torrent file downloads via hash/magnet link

[kaso17]

It might be useful to have a generic endpoint which would try to grab a torrent file from torrent caches based on the hash.

Example download URL:
127.0.0.1:9117/hashdl/magnet:?xt=urn:btih:b8aaaaaaa6cef87215eae46436982fe613edd8e3&dn=example.torrent

Known caches:
http://torrage.info/
http://itorrents.org/
http://btcache.me/
https://thetorrent.org/

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[Terror-Gene]

I feel this is a vital feature to allow all links to be sent to the server blackhole as a torrent file.
Currently it is very inconvenient to copy links & have to paste them into my torrent client web ui.
I was disappointed when i set a blackhole dir to find out that i rarely see links that let me use it.

[Farsons]

These sites are not a lot of torrents.
I know that www.bthub.org has a full database site, but it is difficult to apply for api authkey.
Does anyone know how to apply for api access correctly?

[kaso17]

note:
https://hash2magnet.com seems to do this

[sizzlingkenny]

https://hash2magnet.com changed to https://hashtomagnet.xyz/
it is now providing quick magnet generate via hash key and giving current seed + leech + completed list of the given info hash, its quite useful tool.

[swannie-eire]

+1 for me. I often come across magnet links that never seem to be able to download the metadata of the torrent and as a result the torrent never starts. In those cases i usually just copy the hash and download it from itorrent. it would be great if there was an option from within jackett that would allow me to download the torrent from itorrent using the hash.

if not an option to download the torrent from itorrent it would be great to be able to copy torrent hash as currently i have to add the magnet to the torrent client(qbittorrent) and then copy the hash and then delete the torrent from qbit as if i try to add the torrent after the magnet it wont add the torrent data info(files)

[garfield69]

closing as stale.