mirror of
https://github.com/9001/copyparty.git
synced 2025-08-17 09:02:15 -06:00
100 lines
2.3 KiB
Bash
100 lines
2.3 KiB
Bash
#!/bin/bash
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set -e
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# runs copyparty (or any other program really) in a chroot
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#
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# assumption: these directories, and everything within, are owned by root
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sysdirs=( /bin /lib /lib32 /lib64 /sbin /usr )
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# error-handler
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help() { cat <<'EOF'
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usage:
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./prisonparty.sh <ROOTDIR> <UID> <GID> [VOLDIR [VOLDIR...]] -- copyparty-sfx.py [...]"
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example:
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./prisonparty.sh /var/lib/copyparty-jail 1000 1000 /mnt/nas/music -- copyparty-sfx.py -v /mnt/nas/music::rwmd"
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EOF
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exit 1
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}
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# read arguments
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trap help EXIT
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jail="$(realpath "$1")"; shift
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uid="$1"; shift
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gid="$1"; shift
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vols=()
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while true; do
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v="$1"; shift
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[ "$v" = -- ] && break # end of volumes
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[ "$#" -eq 0 ] && break # invalid usage
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vols+=( "$(realpath "$v")" )
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done
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pybin="$1"; shift
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pybin="$(realpath "$pybin")"
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cpp="$1"; shift
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cpp="$(realpath "$cpp")"
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cppdir="$(dirname "$cpp")"
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trap - EXIT
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# debug/vis
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echo
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echo "chroot-dir = $jail"
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echo "user:group = $uid:$gid"
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echo " copyparty = $cpp"
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echo
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printf '\033[33m%s\033[0m\n' "copyparty can access these folders and all their subdirectories:"
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for v in "${vols[@]}"; do
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printf '\033[36m ├─\033[0m %s \033[36m ── added by (You)\033[0m\n' "$v"
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done
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printf '\033[36m ├─\033[0m %s \033[36m ── where the copyparty binary is\033[0m\n' "$cppdir"
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printf '\033[36m ╰─\033[0m %s \033[36m ── the folder you are currently in\033[0m\n' "$PWD"
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vols+=("$cppdir" "$PWD")
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echo
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# remove any trailing slashes
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jail="${jail%/}"
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cppdir="${cppdir%/}"
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# bind-mount system directories and volumes
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printf '%s\n' "${sysdirs[@]}" "${vols[@]}" | LC_ALL=C sort |
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while IFS= read -r v; do
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[ -e "$v" ] || {
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# printf '\033[1;31mfolder does not exist:\033[0m %s\n' "/$v"
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continue
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}
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i1=$(stat -c%D.%i "$v" 2>/dev/null || echo a)
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i2=$(stat -c%D.%i "$jail$v" 2>/dev/null || echo b)
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[ $i1 = $i2 ] && continue
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mkdir -p "$jail$v"
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mount --bind "$v" "$jail$v"
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done
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# create a tmp
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mkdir -p "$jail/tmp"
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chmod 777 "$jail/tmp"
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# run copyparty
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/sbin/chroot --userspec=$uid:$gid "$jail" "$pybin" "$cpp" "$@" && rv=0 || rv=$?
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# cleanup if not in use
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lsof "$jail" | grep -qF "$jail" &&
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echo "chroot is in use, will not cleanup" ||
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{
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mount | grep -qF " on $jail" |
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awk '{sub(/ type .*/,"");sub(/.* on /,"");print}' |
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LC_ALL=C sort -r | tee /dev/stderr | tr '\n' '\0' | xargs -r0 umount
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}
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exit $rv
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