From 1ffacabd92a4e6a192429be87a845d2aa4c1fef9 Mon Sep 17 00:00:00 2001
From: Jonas Smedegaard <dr@jones.dk>
Date: Sun, 14 Oct 2018 16:37:01 +0200
Subject: Tidy, and provide environment-overridable variables as originally
 intended.

---
 localresetpasswd | 25 +++++++++++++------------
 1 file changed, 13 insertions(+), 12 deletions(-)

diff --git a/localresetpasswd b/localresetpasswd
index 638e047..6cf8f60 100755
--- a/localresetpasswd
+++ b/localresetpasswd
@@ -12,24 +12,25 @@
 # TODO: Support overriding options in /etc/local file
 #
 
-set -e
+set -eu
 
-pass_len=11
+# these are overridable as environment variables
+WORD_LENGTH=${WORD_LENGTH:-11}
+VERBOSE=${VERBOSE:-yes}
+SIMULATE=${SIMULATE:-}
 
-verbose=1
-#simulate=true
-interactive=0
+simulate=${SIMULATE:+true}
 
 # echo something, but only if in verbose mode
 vecho() {
-	test -n "$verbose" && echo "$@" >&2
+	test -n "$VERBOSE" && echo "$@" >&2
 }
 
 randompass() {
-	gpw 1 $pass_len 2>&- ||
-	pwgen $pass_len 1 2>&- ||
-	tr -d '[\000-\057][\072-\100][\133-\140][\173-\377]' < /dev/urandom |
-		dd bs=$pass_len count=1 2>&-
+	gpw 1 "$WORD_LENGTH" 2>&- ||
+	pwgen "$WORD_LENGTH" 1 2>&- ||
+	tr -d '\000-\057\072-\100\133-\140\173-\377' < /dev/urandom |
+		dd bs="$WORD_LENGTH" count=1 2>&-
 }
 
 u=$1
@@ -43,9 +44,9 @@ sudo=sudo
 [ "$(id -u)" -ne 0 ] || sudo=
 
 vecho -n "Applying new password to account $u..."
-echo "$u:$pass" | eval $simulate $sudo "/usr/sbin/chpasswd"
+echo "$u:$pass" | $simulate $sudo "/usr/sbin/chpasswd"
 vecho "  Done!"
 
-eval $simulate localresetpasswdexpiry "$u"
+$simulate localresetpasswdexpiry "$u"
 
 vecho "New password is $pass"
-- 
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