60 lines
2.3 KiB
Nix
60 lines
2.3 KiB
Nix
{ lib, runCommand, transmission_noSystemd, rqbit, writeShellScript, formats, cacert, rsync }:
|
|
let
|
|
urlRegexp = ''.*xt=urn:bt[im]h:([^&]{64}|[^&]{40}).*'';
|
|
in
|
|
{ url
|
|
, name ?
|
|
if (builtins.match urlRegexp url) == null then
|
|
"bittorrent"
|
|
else
|
|
"bittorrent-" + builtins.head (builtins.match urlRegexp url)
|
|
, config ? if (backend == "transmission") then { } else throw "json config for configuring fetchFromBitorrent only works with the transmission backend"
|
|
, hash
|
|
, backend ? "transmission"
|
|
, recursiveHash ? true
|
|
, postFetch ? ""
|
|
, postUnpack ? ""
|
|
}:
|
|
let
|
|
afterSuccess = writeShellScript "fetch-bittorrent-done.sh" ''
|
|
${postUnpack}
|
|
# Flatten the directory, so that only the torrent contents are in $out, not
|
|
# the folder name
|
|
shopt -s dotglob
|
|
mv -v $downloadedDirectory/*/* $out
|
|
rm -v -rf $downloadedDirectory
|
|
unset downloadedDirectory
|
|
${postFetch}
|
|
kill $PPID
|
|
'';
|
|
jsonConfig = (formats.json {}).generate "jsonConfig" config;
|
|
in
|
|
runCommand name {
|
|
nativeBuildInputs = [ cacert ] ++ (if (backend == "transmission" ) then [ transmission_noSystemd ] else if (backend == "rqbit") then [ rqbit ] else throw "rqbit or transmission are the only available backends for fetchtorrent");
|
|
outputHashAlgo = if hash != "" then null else "sha256";
|
|
outputHash = hash;
|
|
outputHashMode = if recursiveHash then "recursive" else "flat";
|
|
|
|
# url will be written to the derivation, meaning it can be parsed and utilized
|
|
# by external tools, such as tools that may want to seed fetchtorrent calls
|
|
# in nixpkgs
|
|
inherit url;
|
|
}
|
|
(if (backend == "transmission") then ''
|
|
export HOME=$TMP
|
|
export downloadedDirectory=$out/downloadedDirectory
|
|
mkdir -p $downloadedDirectory
|
|
mkdir -p $HOME/.config/transmission
|
|
cp ${jsonConfig} $HOME/.config/transmission/settings.json
|
|
function handleChild {
|
|
# This detects failures and logs the contents of the transmission fetch
|
|
find $out
|
|
exit 0
|
|
}
|
|
trap handleChild CHLD
|
|
transmission-cli --port $(shuf -n 1 -i 49152-65535) --portmap --finish ${afterSuccess} --download-dir $downloadedDirectory --config-dir "$HOME"/.config/transmission "$url"
|
|
'' else
|
|
''
|
|
export HOME=$TMP
|
|
rqbit --disable-dht-persistence --http-api-listen-addr "127.0.0.1:$(shuf -n 1 -i 49152-65535)" download -o $out --exit-on-finish "$url"
|
|
'')
|