lib/hx509/hx_locl.h

   1 /*
   2  * Copyright (c) 2004 - 2016 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 /* $Id$ */
  35
  36 #include <config.h>
  37
  38 #include <stdio.h>
  39 #include <stdlib.h>
  40 #include <ctype.h>
  41 #include <errno.h>
  42 #ifdef HAVE_STRINGS_H
  43 #include <strings.h>
  44 #endif
  45 #include <assert.h>
  46 #include <stdarg.h>
  47 #include <err.h>
  48 #include <limits.h>
  49
  50 #include <roken.h>
  51
  52 #include <getarg.h>
  53 #include <base64.h>
  54 #include <hex.h>
  55 #include <com_err.h>
  56 #include <parse_units.h>
  57 #include <parse_bytes.h>
  58
  59 #include <krb5-types.h>
  60
  61 #include <rfc2459_asn1.h>
  62 #include <rfc4108_asn1.h>
  63 #include <cms_asn1.h>
  64 #include <pkcs8_asn1.h>
  65 #include <pkcs9_asn1.h>
  66 #include <pkcs12_asn1.h>
  67 #include <ocsp_asn1.h>
  68 #include <pkcs10_asn1.h>
  69 #include <asn1_err.h>
  70 #include <pkinit_asn1.h>
  71
  72 #include <der.h>
  73
  74 #ifndef O_CLOEXEC
  75 #define O_CLOEXEC 0
  76 #endif
  77 #ifndef O_BINARY
  78 #define O_BINARY 0
  79 #endif
  80
  81 /*
  82  * We use OpenSSL for EC, but to do this we need to disable cross-references
  83  * between OpenSSL and hcrypto bn.h and such.  Source files that use OpenSSL EC
  84  * must define HEIM_NO_CRYPTO_HDRS before including this file.
  85  */
  86
  87 #define HC_DEPRECATED_CRYPTO
  88 #ifndef HEIM_NO_CRYPTO_HDRS
  89 #include "crypto-headers.h"
  90 #endif
  91
  92 struct hx509_keyset_ops;
  93 struct hx509_collector;
  94 struct hx509_generate_private_context;
  95 typedef struct hx509_path hx509_path;
  96
  97 #include <heimbase.h>
  98
  99 #include <hx509.h>
 100
 101 typedef void (*_hx509_cert_release_func)(struct hx509_cert_data *, void *);
 102
 103
 104 #include "sel.h"
 105
 106 #include <hx509-private.h>
 107 #include <hx509_err.h>
 108
 109 struct hx509_peer_info {
 110     hx509_cert cert;
 111     AlgorithmIdentifier *val;
 112     size_t len;
 113 };
 114
 115 #define HX509_CERTS_FIND_SERIALNUMBER           1
 116 #define HX509_CERTS_FIND_ISSUER                 2
 117 #define HX509_CERTS_FIND_SUBJECT                4
 118 #define HX509_CERTS_FIND_ISSUER_KEY_ID          8
 119 #define HX509_CERTS_FIND_SUBJECT_KEY_ID         16
 120
 121 struct hx509_name_data {
 122     Name der_name;
 123 };
 124
 125 struct hx509_path {
 126     size_t len;
 127     hx509_cert *val;
 128 };
 129
 130 struct hx509_query_data {
 131     int match;
 132 #define HX509_QUERY_FIND_ISSUER_CERT            0x000001
 133 #define HX509_QUERY_MATCH_SERIALNUMBER          0x000002
 134 #define HX509_QUERY_MATCH_ISSUER_NAME           0x000004
 135 #define HX509_QUERY_MATCH_SUBJECT_NAME          0x000008
 136 #define HX509_QUERY_MATCH_SUBJECT_KEY_ID        0x000010
 137 #define HX509_QUERY_MATCH_ISSUER_ID             0x000020
 138 #define HX509_QUERY_PRIVATE_KEY                 0x000040
 139 #define HX509_QUERY_KU_ENCIPHERMENT             0x000080
 140 #define HX509_QUERY_KU_DIGITALSIGNATURE         0x000100
 141 #define HX509_QUERY_KU_KEYCERTSIGN              0x000200
 142 #define HX509_QUERY_KU_CRLSIGN                  0x000400
 143 #define HX509_QUERY_KU_NONREPUDIATION           0x000800
 144 #define HX509_QUERY_KU_KEYAGREEMENT             0x001000
 145 #define HX509_QUERY_KU_DATAENCIPHERMENT         0x002000
 146 #define HX509_QUERY_ANCHOR                      0x004000
 147 #define HX509_QUERY_MATCH_CERTIFICATE           0x008000
 148 #define HX509_QUERY_MATCH_LOCAL_KEY_ID          0x010000
 149 #define HX509_QUERY_NO_MATCH_PATH               0x020000
 150 #define HX509_QUERY_MATCH_FRIENDLY_NAME         0x040000
 151 #define HX509_QUERY_MATCH_FUNCTION              0x080000
 152 #define HX509_QUERY_MATCH_KEY_HASH_SHA1         0x100000
 153 #define HX509_QUERY_MATCH_TIME                  0x200000
 154 #define HX509_QUERY_MATCH_EKU                   0x400000
 155 #define HX509_QUERY_MATCH_EXPR                  0x800000
 156 #define HX509_QUERY_MASK                        0xffffff
 157     Certificate *subject;
 158     Certificate *certificate;
 159     heim_integer *serial;
 160     heim_octet_string *subject_id;
 161     heim_octet_string *local_key_id;
 162     Name *issuer_name;
 163     Name *subject_name;
 164     hx509_path *path;
 165     char *friendlyname;
 166     int (*cmp_func)(hx509_context, hx509_cert, void *);
 167     void *cmp_func_ctx;
 168     heim_octet_string *keyhash_sha1;
 169     time_t timenow;
 170     heim_oid *eku;
 171     struct hx_expr *expr;
 172 };
 173
 174 struct hx509_keyset_ops {
 175     const char *name;
 176     int flags;
 177     int (*init)(hx509_context, hx509_certs, void **,
 178                 int, const char *, hx509_lock);
 179     int (*store)(hx509_context, hx509_certs, void *, int, hx509_lock);
 180     int (*free)(hx509_certs, void *);
 181     int (*add)(hx509_context, hx509_certs, void *, hx509_cert);
 182     int (*query)(hx509_context, hx509_certs, void *,
 183                  const hx509_query *, hx509_cert *);
 184     int (*iter_start)(hx509_context, hx509_certs, void *, void **);
 185     int (*iter)(hx509_context, hx509_certs, void *, void *, hx509_cert *);
 186     int (*iter_end)(hx509_context, hx509_certs, void *, void *);
 187     int (*printinfo)(hx509_context, hx509_certs,
 188                      void *, int (*)(void *, const char *), void *);
 189     int (*getkeys)(hx509_context, hx509_certs, void *, hx509_private_key **);
 190     int (*addkey)(hx509_context, hx509_certs, void *, hx509_private_key);
 191     int (*destroy)(hx509_context, hx509_certs, void *);
 192 };
 193
 194 struct _hx509_password {
 195     size_t len;
 196     char **val;
 197 };
 198
 199 extern hx509_lock _hx509_empty_lock;
 200
 201 struct hx509_context_data {
 202     struct hx509_keyset_ops **ks_ops;
 203     int ks_num_ops;
 204     int flags;
 205 #define HX509_CTX_VERIFY_MISSING_OK     1
 206     int ocsp_time_diff;
 207 #define HX509_DEFAULT_OCSP_TIME_DIFF    (5*60)
 208     heim_error_t error;
 209     struct et_list *et_list;
 210     char *querystat;
 211     hx509_certs default_trust_anchors;
 212     heim_context hcontext;
 213     heim_config_section *cf;
 214 };
 215
 216 /* _hx509_calculate_path flag field */
 217 #define HX509_CALCULATE_PATH_NO_ANCHOR 1
 218
 219 /* environment */
 220 struct hx509_env_data {
 221     enum { env_string, env_list } type;
 222     char *name;
 223     struct hx509_env_data *next;
 224     union {
 225         char *string;
 226         struct hx509_env_data *list;
 227     } u;
 228 };
 229
 230
 231 extern const AlgorithmIdentifier * _hx509_crypto_default_sig_alg;
 232 extern const AlgorithmIdentifier * _hx509_crypto_default_digest_alg;
 233 extern const AlgorithmIdentifier * _hx509_crypto_default_secret_alg;
 234
 235 /*
 236  * Private bits from crypto.c, so crypto-ec.c can also see them.
 237  *
 238  * This is part of the use-OpenSSL-for-EC hack.
 239  */
 240
 241 struct hx509_crypto;
 242
 243 struct signature_alg;
 244
 245 struct hx509_generate_private_context {
 246     const heim_oid *key_oid;
 247     int isCA;
 248     unsigned long num_bits;
 249 };
 250
 251 struct hx509_private_key_ops {
 252     const char *pemtype;
 253     const heim_oid *key_oid;
 254     int (*available)(const hx509_private_key,
 255                      const AlgorithmIdentifier *);
 256     int (*get_spki)(hx509_context,
 257                     const hx509_private_key,
 258                     SubjectPublicKeyInfo *);
 259     int (*export)(hx509_context context,
 260                   const hx509_private_key,
 261                   hx509_key_format_t,
 262                   heim_octet_string *);
 263     int (*import)(hx509_context, const AlgorithmIdentifier *,
 264                   const void *, size_t, hx509_key_format_t,
 265                   hx509_private_key);
 266     int (*generate_private_key)(hx509_context,
 267                                 struct hx509_generate_private_context *,
 268                                 hx509_private_key);
 269     BIGNUM *(*get_internal)(hx509_context, hx509_private_key, const char *);
 270 };
 271
 272 struct hx509_private_key {
 273     unsigned int ref;
 274     const struct signature_alg *md;
 275     const heim_oid *signature_alg;
 276     union {
 277         RSA *rsa;
 278         void *keydata;
 279         void *ecdsa; /* EC_KEY */
 280     } private_key;
 281     hx509_private_key_ops *ops;
 282 };
 283
 284 /*
 285  *
 286  */
 287
 288 struct signature_alg {
 289     const char *name;
 290     const heim_oid *sig_oid;
 291     const AlgorithmIdentifier *sig_alg;
 292     const heim_oid *key_oid;
 293     const AlgorithmIdentifier *digest_alg;
 294     int flags;
 295 #define PROVIDE_CONF    0x1
 296 #define REQUIRE_SIGNER  0x2
 297 #define SELF_SIGNED_OK  0x4
 298 #define WEAK_SIG_ALG    0x8
 299
 300 #define SIG_DIGEST      0x100
 301 #define SIG_PUBLIC_SIG  0x200
 302 #define SIG_SECRET      0x400
 303
 304 #define RA_RSA_USES_DIGEST_INFO 0x1000000
 305
 306     time_t best_before; /* refuse signature made after best before date */
 307     const EVP_MD *(*evp_md)(void);
 308     int (*verify_signature)(hx509_context context,
 309                             const struct signature_alg *,
 310                             const Certificate *,
 311                             const AlgorithmIdentifier *,
 312                             const heim_octet_string *,
 313                             const heim_octet_string *);
 314     int (*create_signature)(hx509_context,
 315                             const struct signature_alg *,
 316                             const hx509_private_key,
 317                             const AlgorithmIdentifier *,
 318                             const heim_octet_string *,
 319                             AlgorithmIdentifier *,
 320                             heim_octet_string *);
 321     int digest_size;
 322 };
 323
 324 /*
 325  * Configurable options
 326  */
 327
 328 #ifdef __APPLE__
 329 #define HX509_DEFAULT_ANCHORS "KEYCHAIN:system-anchors"
 330 #endif