diff options
Diffstat (limited to 'src/cpt-lib.in')
| -rw-r--r-- | src/cpt-lib.in | 64 |
1 files changed, 50 insertions, 14 deletions
diff --git a/src/cpt-lib.in b/src/cpt-lib.in index 3d2b2f4..34af54b 100644 --- a/src/cpt-lib.in +++ b/src/cpt-lib.in @@ -44,6 +44,48 @@ trap_set() { esac } +_stat() ( + _user=; eval set -- "$(ls -ld "$1")" + id -u "${_user:=$3}" >/dev/null 2>&1 || _user=root + printf '%s' "$_user" +) + +_readlinkf() ( + # Public domain POSIX sh readlink function by Koichi Nakashima + [ "${1:-}" ] || return 1 + max_symlinks=40 + CDPATH='' # to avoid changing to an unexpected directory + + target=$1 + [ -e "${target%/}" ] || target=${1%"${1##*[!/]}"} # trim trailing slashes + [ -d "${target:-/}" ] && target="$target/" + + cd -P . 2>/dev/null || return 1 + while [ "$max_symlinks" -ge 0 ] && max_symlinks=$((max_symlinks - 1)); do + if [ ! "$target" = "${target%/*}" ]; then + case $target in + /*) cd -P "${target%/*}/" 2>/dev/null || break ;; + *) cd -P "./${target%/*}" 2>/dev/null || break ;; + esac + target=${target##*/} + fi + + if [ ! -L "$target" ]; then + target="${PWD%/}${target:+/}${target}" + printf '%s\n' "${target:-/}" + return 0 + fi + + # `ls -dl` format: "%s %u %s %s %u %s %s -> %s\n", + # <file mode>, <number of links>, <owner name>, <group name>, + # <size>, <date and time>, <pathname of link>, <contents of link> + # https://pubs.opengroup.org/onlinepubs/9699919799/utilities/ls.html + link=$(ls -dl -- "$target" 2>/dev/null) || break + target=${link#*" $target -> "} + done + return 1 +) + # This is the public domain getoptions shell library. It also forms a usage # function. # URL: https://github.com/ko1nksm/getoptions (v2.0.1) @@ -1145,14 +1187,11 @@ pkg_conflicts() { # Use $CPT_ROOT in filename so that we follow its symlinks. file=$CPT_ROOT/${file#/} - # We will only follow the symlinks of the directories, so we - # reserve the directory name in this 'dirname' value. cpt-readlink - # functions in a similar fashion to 'readlink -f', it makes sure - # every component except for the first one to be available on - # the directory structure. If we cannot find it in the system, - # we don't need to make this much more complex by trying so - # hard to find it. Simply use the original directory name. - dirname="$(cpt-readlink "${file%/*}" 2>/dev/null)" || + # We will only follow the symlinks of the directories, so we reserve the + # directory name in this 'dirname' value. If we cannot find it in the + # system, we don't need to make this much more complex by trying so hard + # to find it. Simply use the original directory name. + dirname="$(_readlinkf "${file%/*}" 2>/dev/null)" || dirname="${file%/*}" @@ -1577,8 +1616,7 @@ pkg_fetch() { # ownership of files and directories in the rare # case that the repository is owned by a 3rd user. ( - user=$(cpt-stat "$PWD") || user=root - id -u "$user" >/dev/null 2>&1 || user=root + user=$(_stat "$PWD") [ "$user" = root ] || log "Dropping permissions to $user for pull" @@ -1614,8 +1652,7 @@ pkg_fetch() { # We are going to do the same operation as above, to # find the owner of the repository. ( - user=$(cpt-stat "$PWD") || user=root - id -u "$user" >/dev/null 2>&1 || user=root + user=$(_stat "$PWD") [ "$user" = root ] || log "Dropping permissions to $user for pull" @@ -1647,8 +1684,7 @@ pkg_fetch() { # Similar to the git update, we find the owner of # the repository and spawn rsync as that user. ( - user=$(cpt-stat "$PWD") || user=root - id -u "$user" >/dev/null 2>&1 || user=root + user=$(_stat "$PWD") [ "$user" = root ] || log "Dropping permissions to $user for pull" |