Annotation of src/usr.bin/ssh/auth-options.h, Revision 1.28
1.28 ! djm 1: /* $OpenBSD: auth-options.h,v 1.27 2018/06/06 18:23:32 djm Exp $ */
1.11 stevesk 2:
1.2 deraadt 3: /*
1.25 djm 4: * Copyright (c) 2018 Damien Miller <djm@mindrot.org>
1.2 deraadt 5: *
1.25 djm 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.
9: *
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.
1.2 deraadt 17: */
1.5 djm 18:
1.1 markus 19: #ifndef AUTH_OPTIONS_H
20: #define AUTH_OPTIONS_H
1.8 markus 21:
1.24 djm 22: struct passwd;
23: struct sshkey;
1.28 ! djm 24:
! 25: /* Maximum number of permitopen/permitlisten directives to accept */
! 26: #define SSH_AUTHOPT_PERMIT_MAX 4096
1.24 djm 27:
28: /*
29: * sshauthopt represents key options parsed from authorized_keys or
30: * from certificate extensions/options.
31: */
32: struct sshauthopt {
33: /* Feature flags */
34: int permit_port_forwarding_flag;
35: int permit_agent_forwarding_flag;
36: int permit_x11_forwarding_flag;
37: int permit_pty_flag;
38: int permit_user_rc;
39:
40: /* "restrict" keyword was invoked */
41: int restricted;
1.26 djm 42:
43: /* key/principal expiry date */
44: uint64_t valid_before;
1.24 djm 45:
46: /* Certificate-related options */
47: int cert_authority;
48: char *cert_principals;
49:
50: int force_tun_device;
51: char *force_command;
52:
53: /* Custom environment */
54: size_t nenv;
55: char **env;
56:
57: /* Permitted port forwardings */
58: size_t npermitopen;
59: char **permitopen;
1.27 djm 60:
61: /* Permitted listens (remote forwarding) */
62: size_t npermitlisten;
63: char **permitlisten;
1.24 djm 64:
65: /*
66: * Permitted host/addresses (comma-separated)
67: * Caller must check source address matches both lists (if present).
68: */
69: char *required_from_host_cert;
70: char *required_from_host_keys;
71: };
72:
73: struct sshauthopt *sshauthopt_new(void);
74: struct sshauthopt *sshauthopt_new_with_keys_defaults(void);
75: void sshauthopt_free(struct sshauthopt *opts);
76: struct sshauthopt *sshauthopt_copy(const struct sshauthopt *orig);
77: int sshauthopt_serialise(const struct sshauthopt *opts, struct sshbuf *m, int);
78: int sshauthopt_deserialise(struct sshbuf *m, struct sshauthopt **opts);
79:
80: /*
81: * Parse authorized_keys options. Returns an options structure on success
82: * or NULL on failure. Will set errstr on failure.
83: */
84: struct sshauthopt *sshauthopt_parse(const char *s, const char **errstr);
85:
86: /*
87: * Parse certification options to a struct sshauthopt.
88: * Returns options on success or NULL on failure.
89: */
90: struct sshauthopt *sshauthopt_from_cert(struct sshkey *k);
91:
92: /*
93: * Merge key options.
94: */
95: struct sshauthopt *sshauthopt_merge(const struct sshauthopt *primary,
96: const struct sshauthopt *additional, const char **errstrp);
1.4 markus 97:
1.1 markus 98: #endif