2 * Copyright (c) 2022 Stefan Sperling <stsp@openbsd.org>
3 * Copyright (c) 2015 Ted Unangst <tedu@openbsd.org>
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 #include <sys/types.h>
19 #include <sys/queue.h>
33 #include "got_error.h"
39 parseuid(const char *s, uid_t *uid)
44 if ((pw = getpwnam(s)) != NULL) {
50 *uid = strtonum(s, 0, UID_MAX - 1, &errstr);
57 uidcheck(const char *s, uid_t desired)
61 if (parseuid(s, &uid) != 0)
69 parsegid(const char *s, gid_t *gid)
74 if ((gr = getgrnam(s)) != NULL) {
80 *gid = strtonum(s, 0, GID_MAX - 1, &errstr);
87 match_identifier(const char *identifier, gid_t *groups, int ngroups,
88 uid_t euid, gid_t egid)
92 if (identifier[0] == ':') {
94 if (parsegid(identifier + 1, &rgid) == -1)
96 for (i = 0; i < ngroups; i++) {
97 if (rgid == groups[i] && egid == rgid)
102 } else if (uidcheck(identifier, euid) != 0)
108 const struct got_error *
109 gotd_auth_check(struct gotd_access_rule_list *rules, const char *repo_name,
110 gid_t *groups, int ngroups, uid_t euid, gid_t egid,
113 struct gotd_access_rule *rule;
114 enum gotd_access access = GOTD_ACCESS_DENIED;
116 STAILQ_FOREACH(rule, rules, entry) {
117 if (!match_identifier(rule->identifier, groups, ngroups,
121 access = rule->access;
122 if (rule->access == GOTD_ACCESS_PERMITTED &&
123 (rule->authorization & required_auth) != required_auth)
124 access = GOTD_ACCESS_DENIED;
127 if (access == GOTD_ACCESS_DENIED)
128 return got_error_set_errno(EACCES, repo_name);
130 if (access == GOTD_ACCESS_PERMITTED)
133 /* should not happen, this would be a bug */
134 return got_error_msg(GOT_ERR_NOT_IMPL, "bad access rule");