#!/bin/sh # Verify that the credentials are changed correctly. # Copyright (C) 2009-2018 Free Software Foundation, Inc. # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # You should have received a copy of the GNU General Public License # along with this program. If not, see . . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src print_ver_ chroot require_root_ EXIT_CANCELED=125 grep '^#define HAVE_SETGROUPS 1' "$CONFIG_HEADER" >/dev/null \ && HAVE_SETGROUPS=1 root=$(id -nu 0) || skip_ "Couldn't look up root username" # verify numeric IDs looked up similarly to names NON_ROOT_UID=$(id -u $NON_ROOT_USERNAME) NON_ROOT_GROUP=$NON_ROOT_GID # Used where we want name lookups to occur # "uid:" is supported (unlike chown etc.) since we treat it like "uid" chroot --userspec=$NON_ROOT_UID: / true || fail=1 # verify that invalid groups are diagnosed for g in ' ' ',' '0trail'; do returns_ $EXIT_CANCELED chroot --groups="$g" / id -G >invalid || fail=1 compare /dev/null invalid || fail=1 done # Verify that root credentials are kept. test $(chroot / whoami) = "$root" || fail=1 test "$(groups)" = "$(chroot / groups)" || fail=1 # Verify that credentials are changed correctly. whoami_after_chroot=$( chroot --userspec=$NON_ROOT_USERNAME:$NON_ROOT_GROUP / whoami ) test "$whoami_after_chroot" != "$root" || fail=1 # Verify that when specifying only a group we don't change the # list of supplemental groups test "$(chroot --userspec=:$NON_ROOT_GROUP / id -G)" = \ "$NON_ROOT_GID $(id -G)" || fail=1 if ! test "$HAVE_SETGROUPS"; then Exit $fail fi # Verify that there are no additional groups. id_G_after_chroot=$( chroot --userspec=$NON_ROOT_USERNAME:$NON_ROOT_GROUP \ --groups=$NON_ROOT_GROUP / id -G ) test "$id_G_after_chroot" = $NON_ROOT_GID || fail=1 # Verify that when specifying only the user name we get all their groups test "$(chroot --userspec=$NON_ROOT_USERNAME / id -G)" = \ "$(id -G $NON_ROOT_USERNAME)" || fail=1 # Ditto with trailing : on the user name. test "$(chroot --userspec=$NON_ROOT_USERNAME: / id -G)" = \ "$(id -G $NON_ROOT_USERNAME)" || fail=1 # Verify that when specifying only the user and clearing supplemental groups # that we only get the primary group test "$(chroot --userspec=$NON_ROOT_USERNAME --groups='' / id -G)" = \ $NON_ROOT_GID || fail=1 # Verify that when specifying only the UID we get all their groups test "$(chroot --userspec=$NON_ROOT_UID / id -G)" = \ "$(id -G $NON_ROOT_USERNAME)" || fail=1 # Verify that when specifying only the user and clearing supplemental groups # that we only get the primary group. Note this variant with prepended '+' # results in no lookups in the name database which could be useful depending # on your chroot setup. test "$(chroot --userspec=+$NON_ROOT_UID:+$NON_ROOT_GID --groups='' / id -G)" =\ $NON_ROOT_GID || fail=1 # Verify that when specifying only a group we get the current user ID test "$(chroot --userspec=:$NON_ROOT_GROUP / id -u)" = "$(id -u)" \ || fail=1 # verify that arbitrary numeric IDs are supported test "$(chroot --userspec=1234:+5678 --groups=' +8765,4321' / id -G)" \ || fail=1 # demonstrate that extraneous commas are supported test "$(chroot --userspec=1234:+5678 --groups=',8765,,4321,' / id -G)" \ || fail=1 # demonstrate that --groups is not cumulative test "$(chroot --groups='invalid ignored' --groups='' / id -G)" \ || fail=1 if ! id -u +12342; then # Ensure supplemental groups cleared from some arbitrary unknown ID test "$(chroot --userspec=+12342:+5678 / id -G)" = '5678' || fail=1 # Ensure we fail when we don't know what groups to set for an unknown ID returns_ $EXIT_CANCELED chroot --userspec=+12342 / true || fail=1 fi Exit $fail