1 /* 2 * Copyright 2015-2018 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the OpenSSL license (the "License"). You may not use 5 * this file except in compliance with the License. You can obtain a copy 6 * in the file LICENSE in the source distribution or at 7 * https://www.openssl.org/source/license.html 8 */ 9 10 #include "internal/refcount.h" 11 12 /* Internal X509 structures and functions: not for application use */ 13 14 /* Note: unless otherwise stated a field pointer is mandatory and should 15 * never be set to NULL: the ASN.1 code and accessors rely on mandatory 16 * fields never being NULL. 17 */ 18 19 /* 20 * name entry structure, equivalent to AttributeTypeAndValue defined 21 * in RFC5280 et al. 22 */ 23 struct X509_name_entry_st { 24 ASN1_OBJECT *object; /* AttributeType */ 25 ASN1_STRING *value; /* AttributeValue */ 26 int set; /* index of RDNSequence for this entry */ 27 int size; /* temp variable */ 28 }; 29 30 /* Name from RFC 5280. */ 31 struct X509_name_st { 32 STACK_OF(X509_NAME_ENTRY) *entries; /* DN components */ 33 int modified; /* true if 'bytes' needs to be built */ 34 BUF_MEM *bytes; /* cached encoding: cannot be NULL */ 35 /* canonical encoding used for rapid Name comparison */ 36 unsigned char *canon_enc; 37 int canon_enclen; 38 } /* X509_NAME */ ; 39 40 /* Signature info structure */ 41 42 struct x509_sig_info_st { 43 /* NID of message digest */ 44 int mdnid; 45 /* NID of public key algorithm */ 46 int pknid; 47 /* Security bits */ 48 int secbits; 49 /* Various flags */ 50 uint32_t flags; 51 }; 52 53 /* PKCS#10 certificate request */ 54 55 struct X509_req_info_st { 56 ASN1_ENCODING enc; /* cached encoding of signed part */ 57 ASN1_INTEGER *version; /* version, defaults to v1(0) so can be NULL */ 58 X509_NAME *subject; /* certificate request DN */ 59 X509_PUBKEY *pubkey; /* public key of request */ 60 /* 61 * Zero or more attributes. 62 * NB: although attributes is a mandatory field some broken 63 * encodings omit it so this may be NULL in that case. 64 */ 65 STACK_OF(X509_ATTRIBUTE) *attributes; 66 }; 67 68 struct X509_req_st { 69 X509_REQ_INFO req_info; /* signed certificate request data */ 70 X509_ALGOR sig_alg; /* signature algorithm */ 71 ASN1_BIT_STRING *signature; /* signature */ 72 CRYPTO_REF_COUNT references; 73 CRYPTO_RWLOCK *lock; 74 }; 75 76 struct X509_crl_info_st { 77 ASN1_INTEGER *version; /* version: defaults to v1(0) so may be NULL */ 78 X509_ALGOR sig_alg; /* signature algorithm */ 79 X509_NAME *issuer; /* CRL issuer name */ 80 ASN1_TIME *lastUpdate; /* lastUpdate field */ 81 ASN1_TIME *nextUpdate; /* nextUpdate field: optional */ 82 STACK_OF(X509_REVOKED) *revoked; /* revoked entries: optional */ 83 STACK_OF(X509_EXTENSION) *extensions; /* extensions: optional */ 84 ASN1_ENCODING enc; /* encoding of signed portion of CRL */ 85 }; 86 87 struct X509_crl_st { 88 X509_CRL_INFO crl; /* signed CRL data */ 89 X509_ALGOR sig_alg; /* CRL signature algorithm */ 90 ASN1_BIT_STRING signature; /* CRL signature */ 91 CRYPTO_REF_COUNT references; 92 int flags; 93 /* 94 * Cached copies of decoded extension values, since extensions 95 * are optional any of these can be NULL. 96 */ 97 AUTHORITY_KEYID *akid; 98 ISSUING_DIST_POINT *idp; 99 /* Convenient breakdown of IDP */ 100 int idp_flags; 101 int idp_reasons; 102 /* CRL and base CRL numbers for delta processing */ 103 ASN1_INTEGER *crl_number; 104 ASN1_INTEGER *base_crl_number; 105 STACK_OF(GENERAL_NAMES) *issuers; 106 /* hash of CRL */ 107 unsigned char sha1_hash[SHA_DIGEST_LENGTH]; 108 /* alternative method to handle this CRL */ 109 const X509_CRL_METHOD *meth; 110 void *meth_data; 111 CRYPTO_RWLOCK *lock; 112 }; 113 114 struct x509_revoked_st { 115 ASN1_INTEGER serialNumber; /* revoked entry serial number */ 116 ASN1_TIME *revocationDate; /* revocation date */ 117 STACK_OF(X509_EXTENSION) *extensions; /* CRL entry extensions: optional */ 118 /* decoded value of CRLissuer extension: set if indirect CRL */ 119 STACK_OF(GENERAL_NAME) *issuer; 120 /* revocation reason: set to CRL_REASON_NONE if reason extension absent */ 121 int reason; 122 /* 123 * CRL entries are reordered for faster lookup of serial numbers. This 124 * field contains the original load sequence for this entry. 125 */ 126 int sequence; 127 }; 128 129 /* 130 * This stuff is certificate "auxiliary info": it contains details which are 131 * useful in certificate stores and databases. When used this is tagged onto 132 * the end of the certificate itself. OpenSSL specific structure not defined 133 * in any RFC. 134 */ 135 136 struct x509_cert_aux_st { 137 STACK_OF(ASN1_OBJECT) *trust; /* trusted uses */ 138 STACK_OF(ASN1_OBJECT) *reject; /* rejected uses */ 139 ASN1_UTF8STRING *alias; /* "friendly name" */ 140 ASN1_OCTET_STRING *keyid; /* key id of private key */ 141 STACK_OF(X509_ALGOR) *other; /* other unspecified info */ 142 }; 143 144 struct x509_cinf_st { 145 ASN1_INTEGER *version; /* [ 0 ] default of v1 */ 146 ASN1_INTEGER serialNumber; 147 X509_ALGOR signature; 148 X509_NAME *issuer; 149 X509_VAL validity; 150 X509_NAME *subject; 151 X509_PUBKEY *key; 152 ASN1_BIT_STRING *issuerUID; /* [ 1 ] optional in v2 */ 153 ASN1_BIT_STRING *subjectUID; /* [ 2 ] optional in v2 */ 154 STACK_OF(X509_EXTENSION) *extensions; /* [ 3 ] optional in v3 */ 155 ASN1_ENCODING enc; 156 }; 157 158 struct x509_st { 159 X509_CINF cert_info; 160 X509_ALGOR sig_alg; 161 ASN1_BIT_STRING signature; 162 X509_SIG_INFO siginf; 163 CRYPTO_REF_COUNT references; 164 CRYPTO_EX_DATA ex_data; 165 /* These contain copies of various extension values */ 166 long ex_pathlen; 167 long ex_pcpathlen; 168 uint32_t ex_flags; 169 uint32_t ex_kusage; 170 uint32_t ex_xkusage; 171 uint32_t ex_nscert; 172 ASN1_OCTET_STRING *skid; 173 AUTHORITY_KEYID *akid; 174 X509_POLICY_CACHE *policy_cache; 175 STACK_OF(DIST_POINT) *crldp; 176 STACK_OF(GENERAL_NAME) *altname; 177 NAME_CONSTRAINTS *nc; 178 #ifndef OPENSSL_NO_RFC3779 179 STACK_OF(IPAddressFamily) *rfc3779_addr; 180 struct ASIdentifiers_st *rfc3779_asid; 181 # endif 182 unsigned char sha1_hash[SHA_DIGEST_LENGTH]; 183 X509_CERT_AUX *aux; 184 CRYPTO_RWLOCK *lock; 185 volatile int ex_cached; 186 } /* X509 */ ; 187 188 /* 189 * This is a used when verifying cert chains. Since the gathering of the 190 * cert chain can take some time (and have to be 'retried', this needs to be 191 * kept and passed around. 192 */ 193 struct x509_store_ctx_st { /* X509_STORE_CTX */ 194 X509_STORE *ctx; 195 /* The following are set by the caller */ 196 /* The cert to check */ 197 X509 *cert; 198 /* chain of X509s - untrusted - passed in */ 199 STACK_OF(X509) *untrusted; 200 /* set of CRLs passed in */ 201 STACK_OF(X509_CRL) *crls; 202 X509_VERIFY_PARAM *param; 203 /* Other info for use with get_issuer() */ 204 void *other_ctx; 205 /* Callbacks for various operations */ 206 /* called to verify a certificate */ 207 int (*verify) (X509_STORE_CTX *ctx); 208 /* error callback */ 209 int (*verify_cb) (int ok, X509_STORE_CTX *ctx); 210 /* get issuers cert from ctx */ 211 int (*get_issuer) (X509 **issuer, X509_STORE_CTX *ctx, X509 *x); 212 /* check issued */ 213 int (*check_issued) (X509_STORE_CTX *ctx, X509 *x, X509 *issuer); 214 /* Check revocation status of chain */ 215 int (*check_revocation) (X509_STORE_CTX *ctx); 216 /* retrieve CRL */ 217 int (*get_crl) (X509_STORE_CTX *ctx, X509_CRL **crl, X509 *x); 218 /* Check CRL validity */ 219 int (*check_crl) (X509_STORE_CTX *ctx, X509_CRL *crl); 220 /* Check certificate against CRL */ 221 int (*cert_crl) (X509_STORE_CTX *ctx, X509_CRL *crl, X509 *x); 222 /* Check policy status of the chain */ 223 int (*check_policy) (X509_STORE_CTX *ctx); 224 STACK_OF(X509) *(*lookup_certs) (X509_STORE_CTX *ctx, X509_NAME *nm); 225 STACK_OF(X509_CRL) *(*lookup_crls) (X509_STORE_CTX *ctx, X509_NAME *nm); 226 int (*cleanup) (X509_STORE_CTX *ctx); 227 /* The following is built up */ 228 /* if 0, rebuild chain */ 229 int valid; 230 /* number of untrusted certs */ 231 int num_untrusted; 232 /* chain of X509s - built up and trusted */ 233 STACK_OF(X509) *chain; 234 /* Valid policy tree */ 235 X509_POLICY_TREE *tree; 236 /* Require explicit policy value */ 237 int explicit_policy; 238 /* When something goes wrong, this is why */ 239 int error_depth; 240 int error; 241 X509 *current_cert; 242 /* cert currently being tested as valid issuer */ 243 X509 *current_issuer; 244 /* current CRL */ 245 X509_CRL *current_crl; 246 /* score of current CRL */ 247 int current_crl_score; 248 /* Reason mask */ 249 unsigned int current_reasons; 250 /* For CRL path validation: parent context */ 251 X509_STORE_CTX *parent; 252 CRYPTO_EX_DATA ex_data; 253 SSL_DANE *dane; 254 /* signed via bare TA public key, rather than CA certificate */ 255 int bare_ta_signed; 256 }; 257 258 /* PKCS#8 private key info structure */ 259 260 struct pkcs8_priv_key_info_st { 261 ASN1_INTEGER *version; 262 X509_ALGOR *pkeyalg; 263 ASN1_OCTET_STRING *pkey; 264 STACK_OF(X509_ATTRIBUTE) *attributes; 265 }; 266 267 struct X509_sig_st { 268 X509_ALGOR *algor; 269 ASN1_OCTET_STRING *digest; 270 }; 271 272 struct x509_object_st { 273 /* one of the above types */ 274 X509_LOOKUP_TYPE type; 275 union { 276 char *ptr; 277 X509 *x509; 278 X509_CRL *crl; 279 EVP_PKEY *pkey; 280 } data; 281 }; 282 283 int a2i_ipadd(unsigned char *ipout, const char *ipasc); 284 int x509_set1_time(ASN1_TIME **ptm, const ASN1_TIME *tm); 285 286 void x509_init_sig_info(X509 *x); 287