123 lines
4.3 KiB
Bash
Executable file
123 lines
4.3 KiB
Bash
Executable file
#!/bin/sh
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# Verify that the credentials are changed correctly.
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# Copyright (C) 2009-2025 Free Software Foundation, Inc.
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
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print_ver_ chroot
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require_root_
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EXIT_CANCELED=125
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grep '^#define HAVE_SETGROUPS 1' "$CONFIG_HEADER" >/dev/null \
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&& HAVE_SETGROUPS=1
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root=$(id -nu 0) || skip_ "Couldn't look up root username"
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# verify numeric IDs looked up similarly to names
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NON_ROOT_UID=$(id -u $NON_ROOT_USERNAME)
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NON_ROOT_GROUP=$NON_ROOT_GID # Used where we want name lookups to occur
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# "uid:" is supported (unlike chown etc.) since we treat it like "uid"
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chroot --userspec=$NON_ROOT_UID: / true || fail=1
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# verify that invalid groups are diagnosed
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for g in ' ' ',' '0trail'; do
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returns_ $EXIT_CANCELED chroot --groups="$g" / id -G >invalid || fail=1
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compare /dev/null invalid || fail=1
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done
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# Verify that root credentials are kept.
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test $(chroot / whoami) = "$root" || fail=1
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test "$(groups)" = "$(chroot / groups)" || fail=1
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# Verify that credentials are changed correctly.
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whoami_after_chroot=$(
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chroot --userspec=$NON_ROOT_USERNAME:$NON_ROOT_GROUP / whoami
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)
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test "$whoami_after_chroot" != "$root" || fail=1
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# Verify that when specifying only a group we don't change the
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# list of supplemental groups
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test "$(chroot --userspec=:$NON_ROOT_GROUP / id -G)" = \
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"$NON_ROOT_GID $(id -G)" || fail=1
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if ! test "$HAVE_SETGROUPS"; then
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Exit $fail
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fi
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# Change all whitespaces to newlines, then sort the input.
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# Use for tests with more groups in 'id' output.
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num_sort() { tr -s ' ' '\n' | sort -n; }
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# Verify that there are no additional groups.
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id_G_after_chroot=$(
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chroot --userspec=$NON_ROOT_USERNAME:$NON_ROOT_GROUP \
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--groups=$NON_ROOT_GROUP / id -G
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)
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test "$id_G_after_chroot" = $NON_ROOT_GID || fail=1
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# Verify that when specifying only the user name we get all their groups
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test "$(chroot --userspec=$NON_ROOT_USERNAME / id -G | num_sort)" = \
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"$(id -G $NON_ROOT_USERNAME | num_sort)" || fail=1
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# Ditto with trailing : on the user name.
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test "$(chroot --userspec=$NON_ROOT_USERNAME: / id -G | num_sort)" = \
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"$(id -G $NON_ROOT_USERNAME | num_sort)" || fail=1
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# Verify that when specifying only the user and clearing supplemental groups
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# that we only get the primary group
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test "$(chroot --userspec=$NON_ROOT_USERNAME --groups='' / id -G)" = \
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$NON_ROOT_GID || fail=1
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# Verify that when specifying only the UID we get all their groups
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test "$(chroot --userspec=$NON_ROOT_UID / id -G | num_sort)" = \
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"$(id -G $NON_ROOT_USERNAME | num_sort)" || fail=1
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# Verify that when specifying only the user and clearing supplemental groups
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# that we only get the primary group. Note this variant with prepended '+'
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# results in no lookups in the name database which could be useful depending
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# on your chroot setup.
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test "$(chroot --userspec=+$NON_ROOT_UID:+$NON_ROOT_GID --groups='' / id -G)" =\
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$NON_ROOT_GID || fail=1
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# Verify that when specifying only a group we get the current user ID
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test "$(chroot --userspec=:$NON_ROOT_GROUP / id -u)" = "$(id -u)" \
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|| fail=1
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# verify that arbitrary numeric IDs are supported
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test "$(chroot --userspec=1234:+5678 --groups=' +8765,4321' / id -G)" \
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|| fail=1
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# demonstrate that extraneous commas are supported
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test "$(chroot --userspec=1234:+5678 --groups=',8765,,4321,' / id -G)" \
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|| fail=1
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# demonstrate that --groups is not cumulative
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test "$(chroot --groups='invalid ignored' --groups='' / id -G)" \
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|| fail=1
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if ! id -u +12342; then
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# Ensure supplemental groups cleared from some arbitrary unknown ID
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test "$(chroot --userspec=+12342:+5678 / id -G)" = '5678' || fail=1
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# Ensure we fail when we don't know what groups to set for an unknown ID
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returns_ $EXIT_CANCELED chroot --userspec=+12342 / true || fail=1
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fi
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Exit $fail
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