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https://github.com/notwa/rc
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do a pass over maybesudo
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parent
7a3dc6f821
commit
e145f53955
2 changed files with 57 additions and 21 deletions
17
home/shrc
17
home/shrc
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@ -21,7 +21,21 @@ unset cache
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have() { if [ -z "$ZSH_VERSION" ]; then which -- "$1"; else whence -p -- "$1"; fi; } 2>/dev/null
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has() { have "$@"; } >/dev/null
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has sudo && maybesudo() { sudo "$@"; } || maybesudo() { maybesudo_ "$@"; }
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if has sudo; then
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doas() {
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printf '\033[7m %s \033[m\n' 'warning: you ran sudo when you meant doas!'
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sudo "$@"
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}
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maybesudo() { sudo "$@"; }
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elif has doas; then
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sudo() {
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printf '\033[7m %s \033[m\n' 'warning: you ran doas when you meant sudo!'
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doas "$@"
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}
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maybesudo() { doas "$@"; }
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else
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maybesudo() (__maybesudo "$@")
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fi
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ADDPATH() { ### @- append a directory to `$PATH` if it isn't already present.
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[ $# = 1 ] || { printf >&2 'ADDPATH: expected exactly 1 argument, got %s\n' $#; return 64; }
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@ -183,6 +197,7 @@ counts() ### @- count files in the current directory, including files found recu
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exts() ### @- count and sort file extensions in the current directory, including files found recursively.
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{ find -type f | sed -e 's@.*/@@' -e 's@.*\.@@' | tr A-Z a-z | scount; }
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# TODO: don't use GNU options when busybox is detected!
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nocom() ### @- strip single-line C-like and shell-like comments.
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{ grep -Ev --line-buffered --color=never "^[[:space:]]*(//|#)" "$@"; }
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61
sh/maybesudo
61
sh/maybesudo
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@ -5,30 +5,41 @@ __maybesudo() { ### @maybesudo
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### mimic certain features of `sudo` for systems without it installed.
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### as it stands, this mostly just handles some environment variables.
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###
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### try this: `maybesudo_ -u "$USER" printenv`
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### try this: `maybesudo -u "$USER" printenv`
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complain() {
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printf >&2 'maybesudo: %s\n' "$*"
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}
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usage() {
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printf %s\\n \
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'maybesudo - a dumb utility for systems without sudo' \
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'' \
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'usage: maybesudo -h | -V' \
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'usage: maybesudo [-u user] command [arg ...]' \
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'usage: maybesudo [-u user] file ...' \
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;
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}
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name=
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env_cleanup=0
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while getopts :AEHKPSVbhiklnsvC:U:g:p:r:t:u: name; do
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case "$name" in
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K|V|k)
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([KVk])
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# K: sure kill
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# V: version
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# k: kill
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note 'maybesudo: your system does not have sudo installed!'
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complain 'your system does not have sudo installed!'
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return 0
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;;
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h)
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printf "%s\n" 'maybesudo - a dumb utility for systems without sudo'
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printf "\n"
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printf "%s\n" 'usage: maybesudo -h | -V'
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printf "%s\n" 'usage: maybesudo [command]'
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(h)
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usage
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return 0
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;;
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A|E|H|P|S|n|p)
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([AEHPSnp])
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# A: askpass
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# E: preserve environment
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# H: HOME
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@ -36,10 +47,10 @@ __maybesudo() { ### @maybesudo
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# S: stdin (password)
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# n: non-interactive
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# p: prompt
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note 'maybesudo: option has no effect --' "'$name'"
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complain 'option has no effect --' "'$name'"
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;;
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C|U|b|g|i|l|r|s|t)
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([CUbgilrstv])
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# C: close from (fd)
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# U: other user (in conjunction with -l)
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# b: background
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@ -49,24 +60,25 @@ __maybesudo() { ### @maybesudo
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# r: role (SELinux)
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# s: shell (TODO)
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# t: type (SELinux)
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note "maybesudo: unsupported option --" "'$name'"
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# v: validate
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complain 'unsupported option --' "'$name'"
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return 1
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;;
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u) # user
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(u) # user
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if [ -z "$USER" ] || [ "$OPTARG" != "$USER" ]; then
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note 'maybesudo: users other than yourself are unsupported!'
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complain 'users other than yourself are unsupported!'
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return 1
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fi
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env_cleanup=1
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;;
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:)
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note 'maybesudo: option requires an argument --' "'$OPTARG'"
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(:)
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complain 'option requires an argument --' "'$OPTARG'"
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return 1
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;;
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default)
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note 'maybesudo: invalid option --' "'$OPTARG'"
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(*)
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complain 'invalid option --' "'$OPTARG'"
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return 1
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;;
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esac
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@ -74,6 +86,11 @@ __maybesudo() { ### @maybesudo
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shift "$((OPTIND-1))"
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if [ $# = 0 ]; then
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usage >&2
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exit 64 # EX_USAGE
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fi
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if [ "$env_cleanup" = 1 ]; then
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# portably listing exported variable names is virtually impossible
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# without the blessing of null-terminated strings, so don't even try.
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@ -107,10 +124,14 @@ __maybesudo() { ### @maybesudo
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[ -z "$DISPLAY" ] || set -- DISPLAY="$DISPLAY" "$@"
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[ -z "$COLORS" ] || set -- COLORS="$COLORS" "$@"
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set -- -i "$@"
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elif ! [ -d /C ]; then # no such thing as sudo on Windows (kinda)
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complain 'you requested root permissions, but you do not have sudo installed.'
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return 69 # EX_UNAVAILABLE
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fi
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env "$@"
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exec env "$@"
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}
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maybesudo_()(__maybesudo "$@")
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maybesudo_()(__maybesudo "$@") # deprecated
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[ -n "${preload+-}" ] || __maybesudo "$@"
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