86 lines
2.9 KiB
C
86 lines
2.9 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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/***
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This file is part of systemd.
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Copyright 2017 Yu Watanabe
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <errno.h>
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#include <stdio.h>
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#include "alloc-util.h"
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#include "extract-word.h"
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#include "securebits.h"
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#include "securebits-util.h"
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#include "string-util.h"
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int secure_bits_to_string_alloc(int i, char **s) {
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_cleanup_free_ char *str = NULL;
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size_t len;
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int r;
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assert(s);
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r = asprintf(&str, "%s%s%s%s%s%s",
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(i & (1 << SECURE_KEEP_CAPS)) ? "keep-caps " : "",
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(i & (1 << SECURE_KEEP_CAPS_LOCKED)) ? "keep-caps-locked " : "",
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(i & (1 << SECURE_NO_SETUID_FIXUP)) ? "no-setuid-fixup " : "",
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(i & (1 << SECURE_NO_SETUID_FIXUP_LOCKED)) ? "no-setuid-fixup-locked " : "",
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(i & (1 << SECURE_NOROOT)) ? "noroot " : "",
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(i & (1 << SECURE_NOROOT_LOCKED)) ? "noroot-locked " : "");
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if (r < 0)
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return -ENOMEM;
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len = strlen(str);
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if (len != 0)
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str[len - 1] = '\0';
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*s = TAKE_PTR(str);
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return 0;
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}
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int secure_bits_from_string(const char *s) {
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int secure_bits = 0;
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const char *p;
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int r;
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for (p = s;;) {
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_cleanup_free_ char *word = NULL;
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r = extract_first_word(&p, &word, NULL, EXTRACT_QUOTES);
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if (r == -ENOMEM)
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return r;
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if (r <= 0)
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break;
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if (streq(word, "keep-caps"))
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secure_bits |= 1 << SECURE_KEEP_CAPS;
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else if (streq(word, "keep-caps-locked"))
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secure_bits |= 1 << SECURE_KEEP_CAPS_LOCKED;
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else if (streq(word, "no-setuid-fixup"))
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secure_bits |= 1 << SECURE_NO_SETUID_FIXUP;
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else if (streq(word, "no-setuid-fixup-locked"))
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secure_bits |= 1 << SECURE_NO_SETUID_FIXUP_LOCKED;
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else if (streq(word, "noroot"))
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secure_bits |= 1 << SECURE_NOROOT;
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else if (streq(word, "noroot-locked"))
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secure_bits |= 1 << SECURE_NOROOT_LOCKED;
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}
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return secure_bits;
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}
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