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/* SPDX-License-Identifier: LGPL-2.1+ */
/***
This file is part of systemd.
Copyright 2014 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <sys/prctl.h>
#include "alloc-util.h"
#include "cap-list.h"
#include "capability-util.h"
#include "parse-util.h"
#include "string-util.h"
#include "util.h"
/* verify the capability parser */
static void test_cap_list(void) {
int i;
assert_se(!capability_to_name(-1));
assert_se(!capability_to_name(capability_list_length()));
for (i = 0; i < capability_list_length(); i++) {
const char *n;
assert_se(n = capability_to_name(i));
assert_se(capability_from_name(n) == i);
printf("%s = %i\n", n, i);
}
assert_se(capability_from_name("asdfbsd") == -EINVAL);
assert_se(capability_from_name("CAP_AUDIT_READ") == CAP_AUDIT_READ);
assert_se(capability_from_name("cap_audit_read") == CAP_AUDIT_READ);
assert_se(capability_from_name("cAp_aUdIt_rEAd") == CAP_AUDIT_READ);
assert_se(capability_from_name("0") == 0);
assert_se(capability_from_name("15") == 15);
assert_se(capability_from_name("-1") == -EINVAL);
for (i = 0; i < capability_list_length(); i++) {
_cleanup_cap_free_charp_ char *a = NULL;
const char *b;
unsigned u;
assert_se(a = cap_to_name(i));
/* quit the loop as soon as libcap starts returning
* numeric ids, formatted as strings */
if (safe_atou(a, &u) >= 0)
break;
assert_se(b = capability_to_name(i));
printf("%s vs. %s\n", a, b);
assert_se(strcasecmp(a, b) == 0);
}
}
static void test_capability_set_one(uint64_t c, const char *t) {
_cleanup_free_ char *t1 = NULL;
uint64_t c1, c_masked = c & ((UINT64_C(1) << capability_list_length()) - 1);
assert_se(capability_set_to_string_alloc(c, &t1) == 0);
assert_se(streq(t1, t));
assert_se(capability_set_from_string(t1, &c1) == 0);
assert_se(c1 == c_masked);
free(t1);
assert_se(t1 = strjoin("'cap_chown cap_dac_override' \"cap_setgid cap_setuid\"", t,
" hogehoge foobar 12345 3.14 -3 ", t));
assert_se(capability_set_from_string(t1, &c1) == 0);
assert_se(c1 == c_masked);
}
static void test_capability_set(void) {
uint64_t c;
assert_se(capability_set_from_string(NULL, &c) == 0);
assert_se(c == 0);
assert_se(capability_set_from_string("", &c) == 0);
assert_se(c == 0);
assert_se(capability_set_from_string("0", &c) == 0);
assert_se(c == UINT64_C(1));
assert_se(capability_set_from_string("1", &c) == 0);
assert_se(c == UINT64_C(1) << 1);
assert_se(capability_set_from_string("0 1 2 3", &c) == 0);
assert_se(c == (UINT64_C(1) << 4) - 1);
test_capability_set_one(0, "");
test_capability_set_one(
UINT64_C(1) << CAP_DAC_OVERRIDE,
"cap_dac_override");
test_capability_set_one(
UINT64_C(1) << CAP_DAC_OVERRIDE |
UINT64_C(1) << capability_list_length(),
"cap_dac_override");
test_capability_set_one(
UINT64_C(1) << capability_list_length(), "");
test_capability_set_one(
UINT64_C(1) << CAP_CHOWN |
UINT64_C(1) << CAP_DAC_OVERRIDE |
UINT64_C(1) << CAP_DAC_READ_SEARCH |
UINT64_C(1) << CAP_FOWNER |
UINT64_C(1) << CAP_SETGID |
UINT64_C(1) << CAP_SETUID |
UINT64_C(1) << CAP_SYS_PTRACE |
UINT64_C(1) << CAP_SYS_ADMIN |
UINT64_C(1) << CAP_AUDIT_CONTROL |
UINT64_C(1) << CAP_MAC_OVERRIDE |
UINT64_C(1) << CAP_SYSLOG |
UINT64_C(1) << (capability_list_length() + 1),
"cap_chown cap_dac_override cap_dac_read_search cap_fowner "
"cap_setgid cap_setuid cap_sys_ptrace cap_sys_admin "
"cap_audit_control cap_mac_override cap_syslog");
}
int main(int argc, char *argv[]) {
test_cap_list();
test_capability_set();
return 0;
}
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