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#!/bin/sh
PREFIX=@PREFIX@
PROGRAM=`basename $0`
echon () {
if [ X"$ECHON" = X ]; then
# Determine how to "echo" without newline: "echo -n"
# or "echo ...\c"
if [ X`echo -n` = X-n ]; then
ECHON=echo
NNL="\c"
# "
else
ECHON="echo -n"
NNL=""
fi
fi
$ECHON "$*$NNL"
}
# echo if in verbose mode
vecho() {
[ -n "$VERBOSE" ] && echo "$@"
}
# echo unless quiet mode
qecho() {
[ -z "$QUIET" ] && echo "$@"
}
# echo to stderr
eecho() {
echo "$@" >&2
}
# echo to stderr and exit with error
die() {
eecho "$@"
exit 1
}
init_tmpdir() {
local omask=`umask`
local __tmpd="/tmp/$PROGRAM-${$}-`date +%s`-$RANDOM"
umask 077 || die "umask"
mkdir -p "$__tmpd" || exit 1
trap "rm -fr \"$__tmpd\"; exit" 0
umask $omask
eval "$1=\"$__tmpd\""
}
pkg_inst() {
[ -z "$NOCOMMIT" ] && apk add -q $*
}
pkg_deinst() {
[ -z "$NOCOMMIT" ] && apk del -q $*
}
default_read() {
local n
read n
[ -z "$n" ] && n="$2"
eval "$1=\"$n\""
}
invalid_ip() {
[ "$1" ] || return 0
! ipcalc -s $1
}
cfg_add() {
[ -z "$NOCOMMIT" ] && lbu_add "$@"
}
# from OpenBSD installer
# Ask for a password, saving the input in $resp.
# Display $1 as the prompt.
# *Don't* allow the '!' options that ask does.
# *Don't* echo input.
# *Don't* interpret "\" as escape character.
askpass() {
echo -n "$1 "
set -o noglob
stty -echo
read -r resp
stty echo
set +o noglob
echo
}
# Ask for a password twice, saving the input in $_password
askpassword() {
local _oifs=$IFS
IFS=
while :; do
askpass "Password for $1 account? (will not echo)"
_password=$resp
askpass "Password for $1 account? (again)"
# N.B.: Need quotes around $resp and $_password to preserve leading
# or trailing spaces.
[ "$resp" = "$_password" ] && break
echo "Passwords do not match, try again."
done
IFS=$_oifs
}
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