Annotation of embedaddon/strongswan/src/libstrongswan/credentials/certificates/certificate.h, revision 1.1.1.1

1.1       misho       1: /*
                      2:  * Copyright (C) 2007-2008 Martin Willi
                      3:  * HSR Hochschule fuer Technik Rapperswil
                      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 certificate certificate
                     18:  * @{ @ingroup certificates
                     19:  */
                     20: 
                     21: #ifndef CERTIFICATE_H_
                     22: #define CERTIFICATE_H_
                     23: 
                     24: typedef struct certificate_t certificate_t;
                     25: typedef enum certificate_type_t certificate_type_t;
                     26: typedef enum cert_validation_t cert_validation_t;
                     27: 
                     28: #include <utils/identification.h>
                     29: #include <credentials/keys/public_key.h>
                     30: #include <credentials/keys/signature_params.h>
                     31: #include <credentials/cred_encoding.h>
                     32: 
                     33: /**
                     34:  * Kind of a certificate_t
                     35:  */
                     36: enum certificate_type_t {
                     37:        /** just any certificate */
                     38:        CERT_ANY,
                     39:        /** X.509 certificate */
                     40:        CERT_X509,
                     41:        /** X.509 certificate revocation list */
                     42:        CERT_X509_CRL,
                     43:        /** X.509 online certificate status protocol request */
                     44:        CERT_X509_OCSP_REQUEST,
                     45:        /** X.509 online certificate status protocol response */
                     46:        CERT_X509_OCSP_RESPONSE,
                     47:        /** X.509 attribute certificate */
                     48:        CERT_X509_AC,
                     49:        /** trusted, preinstalled public key */
                     50:        CERT_TRUSTED_PUBKEY,
                     51:        /** PKCS#10 certificate request */
                     52:        CERT_PKCS10_REQUEST,
                     53:        /** PGP certificate */
                     54:        CERT_GPG,
                     55: };
                     56: 
                     57: /**
                     58:  * Enum names for certificate_type_t
                     59:  */
                     60: extern enum_name_t *certificate_type_names;
                     61: 
                     62: /**
                     63:  * Result of a certificate validation.
                     64:  *
                     65:  * Order of values is relevant, sorted from good to bad.
                     66:  */
                     67: enum cert_validation_t {
                     68:        /** certificate has been validated successfully */
                     69:        VALIDATION_GOOD = 0,
                     70:        /** validation has been skipped due to missing validation information */
                     71:        VALIDATION_SKIPPED,
                     72:        /** certificate has been validated, but check based on stale information */
                     73:        VALIDATION_STALE,
                     74:        /** validation failed due to a processing error */
                     75:        VALIDATION_FAILED,
                     76:        /** certificate is on hold (i.e. temporary revocation) */
                     77:        VALIDATION_ON_HOLD,
                     78:        /** certificate has been revoked */
                     79:        VALIDATION_REVOKED,
                     80: };
                     81: 
                     82: /**
                     83:  * Enum names for cert_validation_t
                     84:  */
                     85: extern enum_name_t *cert_validation_names;
                     86: 
                     87: /**
                     88:  * An abstract certificate.
                     89:  *
                     90:  * A certificate designs a subject-issuer relationship. It may have an
                     91:  * associated public key.
                     92:  */
                     93: struct certificate_t {
                     94: 
                     95:        /**
                     96:         * Get the type of the certificate.
                     97:         *
                     98:         * @return                      certificate type
                     99:         */
                    100:        certificate_type_t (*get_type)(certificate_t *this);
                    101: 
                    102:        /**
                    103:         * Get the primary subject to which this certificate belongs.
                    104:         *
                    105:         * @return                      subject identity
                    106:         */
                    107:        identification_t* (*get_subject)(certificate_t *this);
                    108: 
                    109:        /**
                    110:         * Check if certificate contains a subject ID.
                    111:         *
                    112:         * A certificate may contain additional subject identifiers, which are
                    113:         * not returned by get_subject (e.g. subjectAltNames)
                    114:         *
                    115:         * @param subject       subject identity
                    116:         * @return                      matching value of best match
                    117:         */
                    118:        id_match_t (*has_subject)(certificate_t *this, identification_t *subject);
                    119: 
                    120:        /**
                    121:         * Get the issuer which signed this certificate.
                    122:         *
                    123:         * @return                      issuer identity
                    124:         */
                    125:        identification_t* (*get_issuer)(certificate_t *this);
                    126: 
                    127:        /**
                    128:         * Check if certificate contains an issuer ID.
                    129:         *
                    130:         * A certificate may contain additional issuer identifiers, which are
                    131:         * not returned by get_issuer (e.g. issuerAltNames)
                    132:         *
                    133:         * @param subject       issuer identity
                    134:         * @return                      matching value of best match
                    135:         */
                    136:        id_match_t (*has_issuer)(certificate_t *this, identification_t *issuer);
                    137: 
                    138:        /**
                    139:         * Check if this certificate is issued and signed by a specific issuer.
                    140:         *
                    141:         * @param issuer        issuer's certificate
                    142:         * @param scheme        receives used signature scheme and parameters, if
                    143:         *                                      given (allocated)
                    144:         * @return                      TRUE if certificate issued by issuer and trusted
                    145:         */
                    146:        bool (*issued_by)(certificate_t *this, certificate_t *issuer,
                    147:                                          signature_params_t **scheme);
                    148: 
                    149:        /**
                    150:         * Get the public key associated to this certificate.
                    151:         *
                    152:         * @return                      newly referenced public_key, NULL if none available
                    153:         */
                    154:        public_key_t* (*get_public_key)(certificate_t *this);
                    155: 
                    156:        /**
                    157:         * Check the lifetime of the certificate.
                    158:         *
                    159:         * @param when                  check validity at a certain time (NULL for now)
                    160:         * @param not_before    receives certificates start of lifetime
                    161:         * @param not_after             receives certificates end of lifetime
                    162:         * @return                              TRUE if when between not_after and not_before
                    163:         */
                    164:        bool (*get_validity)(certificate_t *this, time_t *when,
                    165:                                                 time_t *not_before, time_t *not_after);
                    166: 
                    167:        /**
                    168:         * Get the certificate in an encoded form as a chunk.
                    169:         *
                    170:         * @param type          type of the encoding, one of CERT_*
                    171:         * @param encoding      encoding of the key, allocated
                    172:         * @return                      TRUE if encoding supported
                    173:         */
                    174:        bool (*get_encoding)(certificate_t *this, cred_encoding_type_t type,
                    175:                                                 chunk_t *encoding);
                    176: 
                    177:        /**
                    178:         * Check if two certificates are equal.
                    179:         *
                    180:         * @param other                 certificate to compare against this
                    181:         * @return                              TRUE if certificates are equal
                    182:         */
                    183:        bool (*equals)(certificate_t *this, certificate_t *other);
                    184: 
                    185:        /**
                    186:         * Get a new reference to the certificate.
                    187:         *
                    188:         * @return                      this, with an increased refcount
                    189:         */
                    190:        certificate_t* (*get_ref)(certificate_t *this);
                    191: 
                    192:        /**
                    193:         * Destroy a certificate.
                    194:         */
                    195:        void (*destroy)(certificate_t *this);
                    196: };
                    197: 
                    198: /**
                    199:  * Generic check if a given certificate is newer than another.
                    200:  *
                    201:  * @param cert                 certificate
                    202:  * @param other                        certificate to compare to
                    203:  * @return                             TRUE if this newer than other
                    204:  */
                    205: bool certificate_is_newer(certificate_t *cert, certificate_t *other);
                    206: 
                    207: #endif /** CERTIFICATE_H_ @}*/

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