child-rekey: Don't change state to INSTALLED if it was already REKEYING
[strongswan.git] / src / libstrongswan / credentials / cert_validator.h
1 /*
2 * Copyright (C) 2010 Martin Willi
3 * Copyright (C) 2010 revosec AG
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2 of the License, or (at your
8 * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
12 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * for more details.
14 */
15
16 /**
17 * @defgroup cert_validator cert_validator
18 * @{ @ingroup credentials
19 */
20
21 #ifndef CERT_VALIDATOR_H_
22 #define CERT_VALIDATOR_H_
23
24 typedef struct cert_validator_t cert_validator_t;
25
26 #include <library.h>
27
28 /**
29 * Certificate validator interface.
30 *
31 * A certificate validator checks constraints or revocation in a certificate
32 * or its issuing CA certificate. The interface allows plugins to do
33 * revocation checking or similar tasks.
34 */
35 struct cert_validator_t {
36
37 /**
38 * Check the lifetime of a certificate.
39 *
40 * If this function returns SUCCESS or FAILED, the certificate lifetime is
41 * considered definitely (in-)valid, without asking other validators.
42 * If all registered validaters return NEED_MORE, the default
43 * lifetime check is performed.
44 *
45 * @param cert certificate to check lifetime
46 * @param pathlen the current length of the path bottom-up
47 * @param anchor is certificate trusted root anchor?
48 * @param auth container for resulting authentication info
49 * @return SUCCESS, FAILED or NEED_MORE to ask next validator
50 */
51 status_t (*check_lifetime)(cert_validator_t *this, certificate_t *cert,
52 int pathlen, bool anchor, auth_cfg_t *auth);
53 /**
54 * Validate a subject certificate in relation to its issuer.
55 *
56 * If FALSE is returned, the validator should call_hook() on the
57 * credential manager with an appropriate type and the certificate.
58 *
59 * @param subject subject certificate to check
60 * @param issuer issuer of subject
61 * @param online whether to do online revocation checking
62 * @param pathlen the current length of the path bottom-up
63 * @param anchor is issuer trusted root anchor
64 * @param auth container for resulting authentication info
65 * @return TRUE if subject certificate valid
66 */
67 bool (*validate)(cert_validator_t *this, certificate_t *subject,
68 certificate_t *issuer, bool online, u_int pathlen,
69 bool anchor, auth_cfg_t *auth);
70 };
71
72 #endif /** CERT_VALIDATOR_H_ @}*/