kiss: Big cleanup of as_root() usage.
1. The same as_root() function is used for all elevation now. The environment can be fully controlled when calling the function. 2. Removal of mixed tabs/spaces due to heredoc fuckery thanks to 'set -- $(cmd)'. 3. Moved file owner code to a function and added safety measure against non-existent UIDs. 4. Fixed bugs when generating checksums via as_root(). Permissions are now checked on a file basis instead of a directory one.
This commit is contained in:
Dylan Araps
parent
724d393bb1
commit
f5c2777787
|
|
@ -1,7 +0,0 @@
|
|||
root = true
|
||||
|
||||
# Force GitHub to display tabs
|
||||
# mixed with [4] spaces properly.
|
||||
[kiss]
|
||||
indent_style = tab
|
||||
indent_size = 4
|
||||
128
kiss
128
kiss
|
|
@ -51,19 +51,32 @@ as_root() {
|
|||
# 'doas' or 'su'. Hurrah for choice.
|
||||
[ "$uid" = 0 ] || log "Using '${su:-su}' (to become ${user:=root})"
|
||||
|
||||
# Add the following environment variables to the root environment
|
||||
# so that the non-root user's cache can be used. This is the
|
||||
# portable method of doing so and works across all tools.
|
||||
set -- env HOME="$HOME" XDG_CACHE_HOME="$XDG_CACHE_HOME" \
|
||||
KISS_PATH="$KISS_PATH" KISS_FORCE="$KISS_FORCE" "$@"
|
||||
|
||||
case $su in
|
||||
*sudo) sudo -iu "$user" -- "$@" ;;
|
||||
*doas) doas -u "$user" -- "$@" ;;
|
||||
*) su -lc "$* <&3" "$user" 3<&0 </dev/tty ;;
|
||||
case ${su##*/} in
|
||||
sudo) sudo -u "$user" -- env "$@" ;;
|
||||
doas) doas -u "$user" -- env "$@" ;;
|
||||
su) su -c "env $* <&3" "$user" 3<&0 </dev/tty ;;
|
||||
*) die "Invalid KISS_SU value: $su (valid: doas, sudo, su)"
|
||||
esac
|
||||
}
|
||||
|
||||
file_owner() {
|
||||
# Grab the owner of the file/directory via 'ls -ld'. This is
|
||||
# fine despite the usual gabble about 'ls' and its usage in scripts.
|
||||
#
|
||||
# Grabbing permissions, ownership or symlink targets from 'ls -l'
|
||||
# output is totally fine and doesn't suffer from the disconnect
|
||||
# between the real and display representation of the information.
|
||||
#
|
||||
# Globbing is disabled and word splitting is intentional here.
|
||||
# shellcheck disable=2046
|
||||
set -- $(ls -ld "$1"); user=${3:-root}
|
||||
|
||||
# If the owner's user ID doesn't exist, fallback
|
||||
# to using 'root'. This prevents the code from
|
||||
# changing the permissions to something wonky.
|
||||
id -u "$user" >/dev/null 2>&1 || user=root
|
||||
}
|
||||
|
||||
run_hook() {
|
||||
# Provide a default post-build hook to remove files
|
||||
# and directories for things we don't support out of
|
||||
|
|
@ -1339,33 +1352,26 @@ pkg_updates() {
|
|||
# ownership of files and directories in the rare
|
||||
# case that the repository is owned by a 3rd user.
|
||||
(
|
||||
# Grab the owner of the directory via 'ls -ld'.
|
||||
# This is fine despite the usual gabble about
|
||||
# 'ls' and its usage in scripts.
|
||||
#
|
||||
# Grabbing permissions, ownership or symlink
|
||||
# targets from 'ls -l' output is totally fine
|
||||
# and doesn't suffer from the disconnect
|
||||
# between the real and display representation
|
||||
# of the information..
|
||||
read -r _ _ user _ <<-EOF || user=root
|
||||
$(ls -ld "$PWD")
|
||||
EOF
|
||||
|
||||
# If the owner's user ID doesn't exist, fallback
|
||||
# to using 'root'. This prevents the code from
|
||||
# changing the permissions to something wonky.
|
||||
id -u "$user" >/dev/null 2>&1 ||
|
||||
user=root
|
||||
file_owner "$PWD"
|
||||
|
||||
# We're in a repository which is owned by a 3rd
|
||||
# user. Not root or the current user.
|
||||
[ "$user" = root ] ||
|
||||
log "Dropping permissions to $user for pull"
|
||||
|
||||
case $su in
|
||||
su) "$su" -c "git fetch && git merge" "$user" ;;
|
||||
*) "$su" -u "$user" git fetch
|
||||
"$su" -u "$user" git merge
|
||||
esac
|
||||
# 'sudo' and 'doas' properly parse command-line
|
||||
# arguments and split them in the common way. 'su'
|
||||
# on the other hand requires that each argument be
|
||||
# properly quoted as the command passed to it must
|
||||
# be a string... This sets quotes where needed.
|
||||
git_cmd="git fetch && git merge"
|
||||
case $su in *su) git_cmd="'$git_cmd'"; esac
|
||||
|
||||
# Spawn a subshell to run multiple commands as
|
||||
# root at once. This makes things easier on users
|
||||
# who aren't using persist/timestamps for auth
|
||||
# caching.
|
||||
user=$user as_root sh -c "$git_cmd"
|
||||
)
|
||||
fi
|
||||
}
|
||||
|
|
@ -1471,29 +1477,19 @@ args() {
|
|||
set -- "${PWD##*/}"
|
||||
esac
|
||||
|
||||
# Parse some arguments earlier to remove the need to duplicate code.
|
||||
case $action in
|
||||
s|search)
|
||||
[ "$1" ] || die "'kiss $action' requires an argument"
|
||||
;;
|
||||
# Rerun the script as root with a fixed environment if needed. We sadly
|
||||
# can't run singular functions as root so this is needed.
|
||||
case $action in a|alternatives|i|install|r|remove)
|
||||
[ -z "$1" ] || [ -w "$KISS_ROOT/" ] || [ "$uid" = 0 ] || {
|
||||
as_root HOME="$HOME" \
|
||||
XDG_CACHE_HOME="$XDG_CACHE_HOME" \
|
||||
KISS_PATH="$KISS_PATH" \
|
||||
KISS_FORCE="$KISS_FORCE" \
|
||||
KISS_ROOT="$KISS_ROOT" \
|
||||
kiss "$action" "$@"
|
||||
|
||||
a|alternatives)
|
||||
# Rerun the script with 'su' if the user isn't root.
|
||||
# Cheeky but 'su' can't be used on shell functions themselves.
|
||||
[ -z "$1" ] || [ -w "$KISS_ROOT/" ] || [ "$uid" = 0 ] || {
|
||||
as_root kiss "$action" "$@"
|
||||
return
|
||||
}
|
||||
;;
|
||||
|
||||
i|install|r|remove)
|
||||
# Rerun the script with 'su' if the user isn't root.
|
||||
# Cheeky but 'su' can't be used on shell functions themselves.
|
||||
[ -w "$KISS_ROOT/" ] || [ "$uid" = 0 ] || {
|
||||
KISS_FORCE="$KISS_FORCE" as_root kiss "$action" "$@"
|
||||
return
|
||||
}
|
||||
;;
|
||||
return
|
||||
}
|
||||
esac
|
||||
|
||||
# Actions can be abbreviated to their first letter. This saves
|
||||
|
|
@ -1529,19 +1525,19 @@ args() {
|
|||
continue
|
||||
}
|
||||
|
||||
pkg_checksums "$pkg" | {
|
||||
if [ -w "$repo_dir" ]; then
|
||||
tee "$repo_dir/checksums"
|
||||
else
|
||||
log "$pkg" "Need permissions to generate checksums"
|
||||
pkg_checksums "$pkg" |
|
||||
|
||||
read -r _ _ user _ <<-EOF || user=root
|
||||
$(ls -ld "$PWD")
|
||||
EOF
|
||||
if touch "$repo_dir/checksums" 2>/dev/null; then
|
||||
tee "$repo_dir/checksums"
|
||||
|
||||
user=$user as_root tee "$repo_dir/checksums"
|
||||
fi
|
||||
}
|
||||
else
|
||||
log "$pkg" "Need permissions to generate checksums"
|
||||
|
||||
file_owner "$repo_dir"
|
||||
pkg_checksums "$pkg" |
|
||||
|
||||
user=$user as_root tee "$repo_dir/checksums"
|
||||
fi
|
||||
|
||||
log "$pkg" "Generated checksums"
|
||||
done
|
||||
|
|
|
|||
Loading…
Reference in New Issue