1 /* $OpenBSD: auth-options.h,v 1.29 2019/11/25 00:54:23 djm Exp $ */
4 * Copyright (c) 2018 Damien Miller <djm@mindrot.org>
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19 #ifndef AUTH_OPTIONS_H
20 #define AUTH_OPTIONS_H
25 /* Maximum number of permitopen/permitlisten directives to accept */
26 #define SSH_AUTHOPT_PERMIT_MAX 4096
29 * sshauthopt represents key options parsed from authorized_keys or
30 * from certificate extensions/options.
34 int permit_port_forwarding_flag;
35 int permit_agent_forwarding_flag;
36 int permit_x11_forwarding_flag;
40 /* "restrict" keyword was invoked */
43 /* key/principal expiry date */
44 uint64_t valid_before;
46 /* Certificate-related options */
48 char *cert_principals;
53 /* Custom environment */
57 /* Permitted port forwardings */
61 /* Permitted listens (remote forwarding) */
66 * Permitted host/addresses (comma-separated)
67 * Caller must check source address matches both lists (if present).
69 char *required_from_host_cert;
70 char *required_from_host_keys;
72 /* Key requires user presence asserted */
73 int no_require_user_presence;
76 struct sshauthopt *sshauthopt_new(void);
77 struct sshauthopt *sshauthopt_new_with_keys_defaults(void);
78 void sshauthopt_free(struct sshauthopt *opts);
79 struct sshauthopt *sshauthopt_copy(const struct sshauthopt *orig);
80 int sshauthopt_serialise(const struct sshauthopt *opts, struct sshbuf *m, int);
81 int sshauthopt_deserialise(struct sshbuf *m, struct sshauthopt **opts);
84 * Parse authorized_keys options. Returns an options structure on success
85 * or NULL on failure. Will set errstr on failure.
87 struct sshauthopt *sshauthopt_parse(const char *s, const char **errstr);
90 * Parse certification options to a struct sshauthopt.
91 * Returns options on success or NULL on failure.
93 struct sshauthopt *sshauthopt_from_cert(struct sshkey *k);
98 struct sshauthopt *sshauthopt_merge(const struct sshauthopt *primary,
99 const struct sshauthopt *additional, const char **errstrp);