crypto/include/internal/x509_int.h

   1 /*
   2  * Copyright 2015-2016 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 /* PKCS#10 certificate request */
  41
  42 struct X509_req_info_st {
  43     ASN1_ENCODING enc;          /* cached encoding of signed part */
  44     ASN1_INTEGER *version;      /* version, defaults to v1(0) so can be NULL */
  45     X509_NAME *subject;         /* certificate request DN */
  46     X509_PUBKEY *pubkey;        /* public key of request */
  47     /*
  48      * Zero or more attributes.
  49      * NB: although attributes is a mandatory field some broken
  50      * encodings omit it so this may be NULL in that case.
  51      */
  52     STACK_OF(X509_ATTRIBUTE) *attributes;
  53 };
  54
  55 struct X509_req_st {
  56     X509_REQ_INFO req_info;     /* signed certificate request data */
  57     X509_ALGOR sig_alg;         /* signature algorithm */
  58     ASN1_BIT_STRING *signature; /* signature */
  59     CRYPTO_REF_COUNT references;
  60     CRYPTO_RWLOCK *lock;
  61 };
  62
  63 struct X509_crl_info_st {
  64     ASN1_INTEGER *version;      /* version: defaults to v1(0) so may be NULL */
  65     X509_ALGOR sig_alg;         /* signature algorithm */
  66     X509_NAME *issuer;          /* CRL issuer name */
  67     ASN1_TIME *lastUpdate;      /* lastUpdate field */
  68     ASN1_TIME *nextUpdate;      /* nextUpdate field: optional */
  69     STACK_OF(X509_REVOKED) *revoked;        /* revoked entries: optional */
  70     STACK_OF(X509_EXTENSION) *extensions;   /* extensions: optional */
  71     ASN1_ENCODING enc;                      /* encoding of signed portion of CRL */
  72 };
  73
  74 struct X509_crl_st {
  75     X509_CRL_INFO crl;          /* signed CRL data */
  76     X509_ALGOR sig_alg;         /* CRL signature algorithm */
  77     ASN1_BIT_STRING signature;  /* CRL signature */
  78     CRYPTO_REF_COUNT references;
  79     int flags;
  80     /*
  81      * Cached copies of decoded extension values, since extensions
  82      * are optional any of these can be NULL.
  83      */
  84     AUTHORITY_KEYID *akid;
  85     ISSUING_DIST_POINT *idp;
  86     /* Convenient breakdown of IDP */
  87     int idp_flags;
  88     int idp_reasons;
  89     /* CRL and base CRL numbers for delta processing */
  90     ASN1_INTEGER *crl_number;
  91     ASN1_INTEGER *base_crl_number;
  92     STACK_OF(GENERAL_NAMES) *issuers;
  93     /* hash of CRL */
  94     unsigned char sha1_hash[SHA_DIGEST_LENGTH];
  95     /* alternative method to handle this CRL */
  96     const X509_CRL_METHOD *meth;
  97     void *meth_data;
  98     CRYPTO_RWLOCK *lock;
  99 };
 100
 101 struct x509_revoked_st {
 102     ASN1_INTEGER serialNumber; /* revoked entry serial number */
 103     ASN1_TIME *revocationDate;  /* revocation date */
 104     STACK_OF(X509_EXTENSION) *extensions;   /* CRL entry extensions: optional */
 105     /* decoded value of CRLissuer extension: set if indirect CRL */
 106     STACK_OF(GENERAL_NAME) *issuer;
 107     /* revocation reason: set to CRL_REASON_NONE if reason extension absent */
 108     int reason;
 109     /*
 110      * CRL entries are reordered for faster lookup of serial numbers. This
 111      * field contains the original load sequence for this entry.
 112      */
 113     int sequence;
 114 };
 115
 116 /*
 117  * This stuff is certificate "auxiliary info": it contains details which are
 118  * useful in certificate stores and databases. When used this is tagged onto
 119  * the end of the certificate itself. OpenSSL specific structure not defined
 120  * in any RFC.
 121  */
 122
 123 struct x509_cert_aux_st {
 124     STACK_OF(ASN1_OBJECT) *trust; /* trusted uses */
 125     STACK_OF(ASN1_OBJECT) *reject; /* rejected uses */
 126     ASN1_UTF8STRING *alias;     /* "friendly name" */
 127     ASN1_OCTET_STRING *keyid;   /* key id of private key */
 128     STACK_OF(X509_ALGOR) *other; /* other unspecified info */
 129 };
 130
 131 struct x509_cinf_st {
 132     ASN1_INTEGER *version;      /* [ 0 ] default of v1 */
 133     ASN1_INTEGER serialNumber;
 134     X509_ALGOR signature;
 135     X509_NAME *issuer;
 136     X509_VAL validity;
 137     X509_NAME *subject;
 138     X509_PUBKEY *key;
 139     ASN1_BIT_STRING *issuerUID; /* [ 1 ] optional in v2 */
 140     ASN1_BIT_STRING *subjectUID; /* [ 2 ] optional in v2 */
 141     STACK_OF(X509_EXTENSION) *extensions; /* [ 3 ] optional in v3 */
 142     ASN1_ENCODING enc;
 143 };
 144
 145 struct x509_st {
 146     X509_CINF cert_info;
 147     X509_ALGOR sig_alg;
 148     ASN1_BIT_STRING signature;
 149     CRYPTO_REF_COUNT references;
 150     CRYPTO_EX_DATA ex_data;
 151     /* These contain copies of various extension values */
 152     long ex_pathlen;
 153     long ex_pcpathlen;
 154     uint32_t ex_flags;
 155     uint32_t ex_kusage;
 156     uint32_t ex_xkusage;
 157     uint32_t ex_nscert;
 158     ASN1_OCTET_STRING *skid;
 159     AUTHORITY_KEYID *akid;
 160     X509_POLICY_CACHE *policy_cache;
 161     STACK_OF(DIST_POINT) *crldp;
 162     STACK_OF(GENERAL_NAME) *altname;
 163     NAME_CONSTRAINTS *nc;
 164 #ifndef OPENSSL_NO_RFC3779
 165     STACK_OF(IPAddressFamily) *rfc3779_addr;
 166     struct ASIdentifiers_st *rfc3779_asid;
 167 # endif
 168     unsigned char sha1_hash[SHA_DIGEST_LENGTH];
 169     X509_CERT_AUX *aux;
 170     CRYPTO_RWLOCK *lock;
 171 } /* X509 */ ;
 172
 173 /*
 174  * This is a used when verifying cert chains.  Since the gathering of the
 175  * cert chain can take some time (and have to be 'retried', this needs to be
 176  * kept and passed around.
 177  */
 178 struct x509_store_ctx_st {      /* X509_STORE_CTX */
 179     X509_STORE *ctx;
 180     /* The following are set by the caller */
 181     /* The cert to check */
 182     X509 *cert;
 183     /* chain of X509s - untrusted - passed in */
 184     STACK_OF(X509) *untrusted;
 185     /* set of CRLs passed in */
 186     STACK_OF(X509_CRL) *crls;
 187     X509_VERIFY_PARAM *param;
 188     /* Other info for use with get_issuer() */
 189     void *other_ctx;
 190     /* Callbacks for various operations */
 191     /* called to verify a certificate */
 192     int (*verify) (X509_STORE_CTX *ctx);
 193     /* error callback */
 194     int (*verify_cb) (int ok, X509_STORE_CTX *ctx);
 195     /* get issuers cert from ctx */
 196     int (*get_issuer) (X509 **issuer, X509_STORE_CTX *ctx, X509 *x);
 197     /* check issued */
 198     int (*check_issued) (X509_STORE_CTX *ctx, X509 *x, X509 *issuer);
 199     /* Check revocation status of chain */
 200     int (*check_revocation) (X509_STORE_CTX *ctx);
 201     /* retrieve CRL */
 202     int (*get_crl) (X509_STORE_CTX *ctx, X509_CRL **crl, X509 *x);
 203     /* Check CRL validity */
 204     int (*check_crl) (X509_STORE_CTX *ctx, X509_CRL *crl);
 205     /* Check certificate against CRL */
 206     int (*cert_crl) (X509_STORE_CTX *ctx, X509_CRL *crl, X509 *x);
 207     /* Check policy status of the chain */
 208     int (*check_policy) (X509_STORE_CTX *ctx);
 209     STACK_OF(X509) *(*lookup_certs) (X509_STORE_CTX *ctx, X509_NAME *nm);
 210     STACK_OF(X509_CRL) *(*lookup_crls) (X509_STORE_CTX *ctx, X509_NAME *nm);
 211     int (*cleanup) (X509_STORE_CTX *ctx);
 212     /* The following is built up */
 213     /* if 0, rebuild chain */
 214     int valid;
 215     /* number of untrusted certs */
 216     int num_untrusted;
 217     /* chain of X509s - built up and trusted */
 218     STACK_OF(X509) *chain;
 219     /* Valid policy tree */
 220     X509_POLICY_TREE *tree;
 221     /* Require explicit policy value */
 222     int explicit_policy;
 223     /* When something goes wrong, this is why */
 224     int error_depth;
 225     int error;
 226     X509 *current_cert;
 227     /* cert currently being tested as valid issuer */
 228     X509 *current_issuer;
 229     /* current CRL */
 230     X509_CRL *current_crl;
 231     /* score of current CRL */
 232     int current_crl_score;
 233     /* Reason mask */
 234     unsigned int current_reasons;
 235     /* For CRL path validation: parent context */
 236     X509_STORE_CTX *parent;
 237     CRYPTO_EX_DATA ex_data;
 238     SSL_DANE *dane;
 239     /* signed via bare TA public key, rather than CA certificate */
 240     int bare_ta_signed;
 241 };
 242
 243 /* PKCS#8 private key info structure */
 244
 245 struct pkcs8_priv_key_info_st {
 246     ASN1_INTEGER *version;
 247     X509_ALGOR *pkeyalg;
 248     ASN1_OCTET_STRING *pkey;
 249     STACK_OF(X509_ATTRIBUTE) *attributes;
 250 };
 251
 252 struct X509_sig_st {
 253     X509_ALGOR *algor;
 254     ASN1_OCTET_STRING *digest;
 255 };
 256
 257 struct x509_object_st {
 258     /* one of the above types */
 259     X509_LOOKUP_TYPE type;
 260     union {
 261         char *ptr;
 262         X509 *x509;
 263         X509_CRL *crl;
 264         EVP_PKEY *pkey;
 265     } data;
 266 };
 267
 268 int a2i_ipadd(unsigned char *ipout, const char *ipasc);
 269 int x509_set1_time(ASN1_TIME **ptm, const ASN1_TIME *tm);