joal/scripts/bittorrent-client-update-detector/libtorrent_funcs.sh

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version_to_char() {
if [ $1 -ge 0 ] && [ $1 -lt 10 ]; then
echo $1
elif [ $1 -ge 10 ]; then
#return char('A' + (v - 10));
echo 0x$(( $(printf "%x" "'A'") + ($1 - 10))) | xxd -r
fi
}
libtorrent__compute_peer_id_prefix() {
prefix='-'
prefix=$prefix$(echo $1 | head -c 2)
prefix=$prefix$(version_to_char $2)
prefix=$prefix$(version_to_char $3)
prefix=$prefix$(version_to_char $4)
prefix=$prefix$(version_to_char $5)
prefix=$prefix'-'
echo "$prefix"
}
libtorrent_get_key_format() {
# fn de generation de la clé: https://github.com/arvidn/libtorrent/blob/master/src/torrent.cpp std::uint32_t torrent::tracker_key() const
# Key format (uppercase) https://github.com/arvidn/libtorrent/blob/master//src/http_tracker_connection.cpp "&key=%08X" (capital X means uppercased hexa, %08 means length of 8 and left-padded with 0)
echo "Libtorrent generate keys matching regex pattern [0-F]{8} (uppercased)"
}