#!/usr/bin/env bash
# SPDX-License-Identifier: LGPL-2.1-or-later
set -e

SYSUSERS="${1:-systemd-sysusers}"

[ -e "$(dirname $0)/../systemd-runtest.env" ] && . "$(dirname $0)/../systemd-runtest.env"
SYSTEMD_TEST_DATA=${SYSTEMD_TEST_DATA:-@SYSTEMD_TEST_DATA@}
SOURCE=$SYSTEMD_TEST_DATA/test-sysusers

TESTDIR=$(mktemp --tmpdir --directory "test-sysusers.XXXXXXXXXX")
trap "rm -rf '$TESTDIR'" EXIT INT QUIT PIPE

prepare_testdir() {
    mkdir -p $TESTDIR/etc/sysusers.d/
    mkdir -p $TESTDIR/usr/lib/sysusers.d/
    rm -f $TESTDIR/etc/*{passwd,group,shadow}
    for i in $1.initial-{passwd,group,shadow}; do
        test -f $i && cp $i $TESTDIR/etc/${i#*.initial-}
    done
    return 0
}

[ @SYSTEM_UID_MAX@ -lt @SYSTEM_GID_MAX@ ] && system_guid_max=@SYSTEM_UID_MAX@ || system_guid_max=@SYSTEM_GID_MAX@

preprocess() {
    m=${2:-$system_guid_max}

    sed -e "s/SYSTEM_UGID_MAX/$m/g;
            s#NOLOGIN#@NOLOGIN@#g" "$1"
}

compare() {
    if ! diff -u $TESTDIR/etc/passwd <(preprocess $1.expected-passwd $3); then
        echo "**** Unexpected output for $f $2"
        exit 1
    fi

    if ! diff -u $TESTDIR/etc/group <(preprocess $1.expected-group $3); then
        echo "**** Unexpected output for $f $2"
        exit 1
    fi
}

rm -f $TESTDIR/etc/sysusers.d/* $TESTDIR/usr/lib/sysusers.d/*

# happy tests
for f in $(ls -1 $SOURCE/test-*.input | sort -V); do
    echo "*** Running $f"
    prepare_testdir ${f%.input}
    cp $f $TESTDIR/usr/lib/sysusers.d/test.conf
    $SYSUSERS --root=$TESTDIR

    compare ${f%.*} ""
done

for f in $(ls -1 $SOURCE/test-*.input | sort -V); do
    echo "*** Running $f on stdin"
    prepare_testdir ${f%.input}
    touch $TESTDIR/etc/sysusers.d/test.conf
    cat $f | $SYSUSERS --root=$TESTDIR -

    compare ${f%.*} "on stdin"
done

for f in $(ls -1 $SOURCE/test-*.input | sort -V); do
    echo "*** Running $f on stdin with --replace"
    prepare_testdir ${f%.input}
    touch $TESTDIR/etc/sysusers.d/test.conf
    # this overrides test.conf which is masked on disk
    cat $f | $SYSUSERS --root=$TESTDIR --replace=/etc/sysusers.d/test.conf -
    # this should be ignored
    cat $SOURCE/test-1.input | $SYSUSERS --root=$TESTDIR --replace=/usr/lib/sysusers.d/test.conf -

    compare ${f%.*} "on stdin with --replace"
done

# test --inline
echo "*** Testing --inline"
prepare_testdir $SOURCE/inline
# copy a random file to make sure it is ignored
cp $f $TESTDIR/etc/sysusers.d/confuse.conf
$SYSUSERS --root=$TESTDIR --inline \
          "u     u1   222 -     - /bin/zsh" \
          "g     g1   111"

compare $SOURCE/inline "(--inline)"

# test --replace
echo "*** Testing --inline with --replace"
prepare_testdir $SOURCE/inline
# copy a random file to make sure it is ignored
cp $f $TESTDIR/etc/sysusers.d/confuse.conf
$SYSUSERS --root=$TESTDIR \
          --inline \
          --replace=/etc/sysusers.d/confuse.conf \
          "u     u1   222 -     - /bin/zsh" \
          "g     g1   111"

compare $SOURCE/inline "(--inline --replace=…)"

rm -f $TESTDIR/etc/sysusers.d/* $TESTDIR/usr/lib/sysusers.d/*

cat >$TESTDIR/etc/login.defs <<EOF
SYS_UID_MIN abcd
SYS_UID_MAX abcd
SYS_GID_MIN abcd
SYS_GID_MAX abcd
SYS_UID_MIN 401
SYS_UID_MAX 555
SYS_GID_MIN 405
SYS_GID_MAX 666
SYS_UID_MIN abcd
SYS_UID_MAX abcd
SYS_GID_MIN abcd
SYS_GID_MAX abcd
SYS_UID_MIN999
SYS_UID_MAX999
SYS_GID_MIN999
SYS_GID_MAX999
EOF

for f in $(ls -1 $SOURCE/test-*.input | sort -V); do
    echo "*** Running $f (with login.defs)"
    prepare_testdir ${f%.input}
    cp $f $TESTDIR/usr/lib/sysusers.d/test.conf
    $SYSUSERS --root=$TESTDIR

    [ @ENABLE_COMPAT_MUTABLE_UID_BOUNDARIES@ = 1 ] && bound=555 || bound=$system_guid_max
    compare ${f%.*} "(with login.defs)" $bound
done

rm -f $TESTDIR/etc/sysusers.d/* $TESTDIR/usr/lib/sysusers.d/*

mv $TESTDIR/etc/login.defs $TESTDIR/etc/login.defs.moved
ln -s ../../../../../etc/login.defs.moved $TESTDIR/etc/login.defs

for f in $(ls -1 $SOURCE/test-*.input | sort -V); do
    echo "*** Running $f (with login.defs symlinked)"
    prepare_testdir ${f%.input}
    cp $f $TESTDIR/usr/lib/sysusers.d/test.conf
    $SYSUSERS --root=$TESTDIR

    [ @ENABLE_COMPAT_MUTABLE_UID_BOUNDARIES@ = 1 ] && bound=555 || bound=$system_guid_max
    compare ${f%.*} "(with login.defs symlinked)" $bound
done

rm -f $TESTDIR/etc/sysusers.d/* $TESTDIR/usr/lib/sysusers.d/*

# tests for error conditions
for f in $(ls -1 $SOURCE/unhappy-*.input | sort -V); do
    echo "*** Running test $f"
    prepare_testdir ${f%.input}
    cp $f $TESTDIR/usr/lib/sysusers.d/test.conf
    $SYSUSERS --root=$TESTDIR 2>&1 | tail -n1 > $TESTDIR/err
    if ! diff -u $TESTDIR/err  ${f%.*}.expected-err; then
        echo "**** Unexpected error output for $f"
        cat $TESTDIR/err
        exit 1
    fi
done
