#!/bin/sh

set -e

cd $(dirname $0)

# Rational:
# Test that usermod can change the group of an user
# (-g with non-numerical GID)

save()
{
	[ ! -d tmp ] && mkdir tmp
	for i in passwd group shadow gshadow
	do
		[ -f /etc/$i  ] && cp /etc/$i  tmp/$i
	done

	true
}

restore()
{
	for i in passwd group shadow gshadow
	do
		[ -f tmp/$i  ] && cp tmp/$i  /etc/$i  && rm tmp/$i
	done
	rmdir tmp
}

save

# restore the files on exit
trap 'restore' 0

cp data/{passwd,shadow,group,gshadow} /etc/

lines_passwd=$(wc -l /etc/passwd | cut -f1 -d" ")
lines_shadow=$(wc -l /etc/shadow | cut -f1 -d" ")
lines_group=$(wc -l /etc/group | cut -f1 -d" ")
lines_gshadow=$(wc -l /etc/gshadow | cut -f1 -d" ")

echo -n "Create user test1..."
useradd test1
echo "OK"

uid=$(getent passwd test1|sed -ne "s/test1:x:\([0-9]*\):.*/\\1/p")

echo -n "Change user test1..."
usermod -g bin test1
echo "OK"

echo "test if the user was changed"
echo -n "  passwd..."
getent passwd test1 |
	egrep "^test1:x:$uid:2::/home/test1:/bin/sh$"
echo "  OK"
echo -n "  group..."
getent group test1  | egrep "^test1:x:$uid:$"
echo "  OK"
echo -n "  shadow..."
getent shadow test1 | egrep "^test1:!:[0-9]+:0:99999:7:::$"
echo "  OK"
echo -n "  gshadow..."
egrep "^test1:!::$" /etc/gshadow
echo "  OK"
# the home directory should not exist
echo -n "  no homedir..."
test -d /home/test1 && exit 1 || true
echo "  OK"
echo -n "  number of lines"
test $(( lines_passwd  + 1 )) = $(wc -l /etc/passwd | cut -f1 -d" ")
echo -n "."
test $(( lines_group   + 1 )) = $(wc -l /etc/group | cut -f1 -d" ")
echo -n "."
test $(( lines_shadow  + 1 )) = $(wc -l /etc/shadow | cut -f1 -d" ")
echo -n "."
test $(( lines_gshadow + 1 )) = $(wc -l /etc/gshadow | cut -f1 -d" ")
echo -n "."
echo "  OK"