| File: | src/sbin/isakmpd/x509.c |
| Warning: | line 534, column 35 Array access results in a null pointer dereference |
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| 1 | /* $OpenBSD: x509.c,v 1.124 2021/11/19 23:15:59 tb Exp $ */ | |||
| 2 | /* $EOM: x509.c,v 1.54 2001/01/16 18:42:16 ho Exp $ */ | |||
| 3 | ||||
| 4 | /* | |||
| 5 | * Copyright (c) 1998, 1999 Niels Provos. All rights reserved. | |||
| 6 | * Copyright (c) 1999, 2000, 2001 Niklas Hallqvist. All rights reserved. | |||
| 7 | * Copyright (c) 1999, 2000, 2001 Angelos D. Keromytis. All rights reserved. | |||
| 8 | * | |||
| 9 | * Redistribution and use in source and binary forms, with or without | |||
| 10 | * modification, are permitted provided that the following conditions | |||
| 11 | * are met: | |||
| 12 | * 1. Redistributions of source code must retain the above copyright | |||
| 13 | * notice, this list of conditions and the following disclaimer. | |||
| 14 | * 2. Redistributions in binary form must reproduce the above copyright | |||
| 15 | * notice, this list of conditions and the following disclaimer in the | |||
| 16 | * documentation and/or other materials provided with the distribution. | |||
| 17 | * | |||
| 18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |||
| 19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |||
| 20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |||
| 21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |||
| 22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |||
| 23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |||
| 24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |||
| 25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |||
| 26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |||
| 27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |||
| 28 | */ | |||
| 29 | ||||
| 30 | /* | |||
| 31 | * This code was written under funding by Ericsson Radio Systems. | |||
| 32 | */ | |||
| 33 | ||||
| 34 | #include <sys/types.h> | |||
| 35 | #include <sys/stat.h> | |||
| 36 | #include <dirent.h> | |||
| 37 | #include <errno(*__errno()).h> | |||
| 38 | #include <fcntl.h> | |||
| 39 | #include <stdio.h> | |||
| 40 | #include <stdlib.h> | |||
| 41 | #include <string.h> | |||
| 42 | #include <unistd.h> | |||
| 43 | #include <limits.h> | |||
| 44 | ||||
| 45 | #include <regex.h> | |||
| 46 | #include <keynote.h> | |||
| 47 | ||||
| 48 | #include "cert.h" | |||
| 49 | #include "conf.h" | |||
| 50 | #include "exchange.h" | |||
| 51 | #include "hash.h" | |||
| 52 | #include "ike_auth.h" | |||
| 53 | #include "ipsec.h" | |||
| 54 | #include "log.h" | |||
| 55 | #include "dh.h" | |||
| 56 | #include "monitor.h" | |||
| 57 | #include "policy.h" | |||
| 58 | #include "sa.h" | |||
| 59 | #include "util.h" | |||
| 60 | #include "x509.h" | |||
| 61 | ||||
| 62 | static u_int16_t x509_hash(u_int8_t *, size_t); | |||
| 63 | static void x509_hash_init(void); | |||
| 64 | static X509 *x509_hash_find(u_int8_t *, size_t); | |||
| 65 | static int x509_hash_enter(X509 *); | |||
| 66 | ||||
| 67 | /* | |||
| 68 | * X509_STOREs do not support subjectAltNames, so we have to build | |||
| 69 | * our own hash table. | |||
| 70 | */ | |||
| 71 | ||||
| 72 | /* | |||
| 73 | * XXX Actually this store is not really useful, we never use it as we have | |||
| 74 | * our own hash table. It also gets collisions if we have several certificates | |||
| 75 | * only differing in subjectAltName. | |||
| 76 | */ | |||
| 77 | static X509_STORE *x509_certs = 0; | |||
| 78 | static X509_STORE *x509_cas = 0; | |||
| 79 | ||||
| 80 | static int n_x509_cas = 0; | |||
| 81 | ||||
| 82 | /* Initial number of bits used as hash. */ | |||
| 83 | #define INITIAL_BUCKET_BITS6 6 | |||
| 84 | ||||
| 85 | struct x509_hash { | |||
| 86 | LIST_ENTRY(x509_hash)struct { struct x509_hash *le_next; struct x509_hash **le_prev ; } link; | |||
| 87 | ||||
| 88 | X509 *cert; | |||
| 89 | }; | |||
| 90 | ||||
| 91 | static LIST_HEAD(x509_list, x509_hash)struct x509_list { struct x509_hash *lh_first; } *x509_tab = 0; | |||
| 92 | ||||
| 93 | /* Works both as a maximum index and a mask. */ | |||
| 94 | static int bucket_mask; | |||
| 95 | ||||
| 96 | /* | |||
| 97 | * Given an X509 certificate, create a KeyNote assertion where | |||
| 98 | * Issuer/Subject -> Authorizer/Licensees. | |||
| 99 | * XXX RSA-specific. | |||
| 100 | */ | |||
| 101 | int | |||
| 102 | x509_generate_kn(int id, X509 *cert) | |||
| 103 | { | |||
| 104 | static const char fmt[] = "Authorizer: \"rsa-hex:%s\"\nLicensees: \"rsa-hex:%s" | |||
| 105 | "\"\nConditions: %s >= \"%s\" && %s <= \"%s\";\n"; | |||
| 106 | char *ikey = NULL((void*)0), *skey = NULL((void*)0), *buf = NULL((void*)0); | |||
| 107 | char isname[256], subname[256]; | |||
| 108 | static const char fmt2[] = "Authorizer: \"DN:%s\"\nLicensees: \"DN:%s\"\n" | |||
| 109 | "Conditions: %s >= \"%s\" && %s <= \"%s\";\n"; | |||
| 110 | X509_NAME *issuer, *subject; | |||
| 111 | struct keynote_deckey dc; | |||
| 112 | X509_STORE_CTX *csc = NULL((void*)0); | |||
| 113 | X509_OBJECT *obj = NULL((void*)0); | |||
| 114 | X509 *icert; | |||
| 115 | RSA *key = NULL((void*)0); | |||
| 116 | time_t tt; | |||
| 117 | char before[15], after[15], *timecomp, *timecomp2; | |||
| 118 | ASN1_TIME *tm; | |||
| 119 | int i; | |||
| 120 | ||||
| 121 | LOG_DBG((LOG_POLICY, 90,log_debug (LOG_POLICY, 90, "x509_generate_kn: generating KeyNote policy for certificate %p" , cert) | |||
| 122 | "x509_generate_kn: generating KeyNote policy for certificate %p",log_debug (LOG_POLICY, 90, "x509_generate_kn: generating KeyNote policy for certificate %p" , cert) | |||
| 123 | cert))log_debug (LOG_POLICY, 90, "x509_generate_kn: generating KeyNote policy for certificate %p" , cert); | |||
| 124 | ||||
| 125 | issuer = X509_get_issuer_name(cert); | |||
| 126 | subject = X509_get_subject_name(cert); | |||
| 127 | ||||
| 128 | /* Missing or self-signed, ignore cert but don't report failure. */ | |||
| 129 | if (!issuer || !subject || !X509_NAME_cmp(issuer, subject)) | |||
| 130 | return 1; | |||
| 131 | ||||
| 132 | if (!x509_cert_get_key(cert, &key)) { | |||
| 133 | LOG_DBG((LOG_POLICY, 30,log_debug (LOG_POLICY, 30, "x509_generate_kn: failed to get public key from cert" ) | |||
| 134 | "x509_generate_kn: failed to get public key from cert"))log_debug (LOG_POLICY, 30, "x509_generate_kn: failed to get public key from cert" ); | |||
| 135 | return 0; | |||
| 136 | } | |||
| 137 | dc.dec_algorithm = KEYNOTE_ALGORITHM_RSA6; | |||
| 138 | dc.dec_key = key; | |||
| 139 | ikey = kn_encode_key(&dc, INTERNAL_ENC_PKCS11, ENCODING_HEX1, | |||
| 140 | KEYNOTE_PUBLIC_KEY0); | |||
| 141 | if (keynote_errno == ERROR_MEMORY-1) { | |||
| 142 | log_print("x509_generate_kn: failed to get memory for " | |||
| 143 | "public key"); | |||
| 144 | LOG_DBG((LOG_POLICY, 30, "x509_generate_kn: cannot get "log_debug (LOG_POLICY, 30, "x509_generate_kn: cannot get " "subject key" ) | |||
| 145 | "subject key"))log_debug (LOG_POLICY, 30, "x509_generate_kn: cannot get " "subject key" ); | |||
| 146 | goto fail; | |||
| 147 | } | |||
| 148 | if (!ikey) { | |||
| 149 | LOG_DBG((LOG_POLICY, 30, "x509_generate_kn: cannot get "log_debug (LOG_POLICY, 30, "x509_generate_kn: cannot get " "subject key" ) | |||
| 150 | "subject key"))log_debug (LOG_POLICY, 30, "x509_generate_kn: cannot get " "subject key" ); | |||
| 151 | goto fail; | |||
| 152 | } | |||
| 153 | ||||
| 154 | RSA_free(key); | |||
| 155 | key = NULL((void*)0); | |||
| 156 | ||||
| 157 | csc = X509_STORE_CTX_new(); | |||
| 158 | if (csc == NULL((void*)0)) { | |||
| 159 | log_print("x509_generate_kn: failed to get memory for " | |||
| 160 | "certificate store"); | |||
| 161 | goto fail; | |||
| 162 | } | |||
| 163 | obj = X509_OBJECT_new(); | |||
| 164 | if (obj == NULL((void*)0)) { | |||
| 165 | log_print("x509_generate_kn: failed to get memory for " | |||
| 166 | "certificate object"); | |||
| 167 | goto fail; | |||
| 168 | } | |||
| 169 | ||||
| 170 | /* Now find issuer's certificate so we can get the public key. */ | |||
| 171 | X509_STORE_CTX_init(csc, x509_cas, cert, NULL((void*)0)); | |||
| 172 | if (X509_STORE_get_by_subjectX509_STORE_CTX_get_by_subject(csc, X509_LU_X509, issuer, obj) != | |||
| 173 | X509_LU_X509) { | |||
| 174 | X509_STORE_CTX_cleanup(csc); | |||
| 175 | X509_STORE_CTX_init(csc, x509_certs, cert, NULL((void*)0)); | |||
| 176 | if (X509_STORE_get_by_subjectX509_STORE_CTX_get_by_subject(csc, X509_LU_X509, issuer, obj) | |||
| 177 | != X509_LU_X509) { | |||
| 178 | X509_STORE_CTX_cleanup(csc); | |||
| 179 | LOG_DBG((LOG_POLICY, 30,log_debug (LOG_POLICY, 30, "x509_generate_kn: no certificate found for " "issuer") | |||
| 180 | "x509_generate_kn: no certificate found for "log_debug (LOG_POLICY, 30, "x509_generate_kn: no certificate found for " "issuer") | |||
| 181 | "issuer"))log_debug (LOG_POLICY, 30, "x509_generate_kn: no certificate found for " "issuer"); | |||
| 182 | goto fail; | |||
| 183 | } | |||
| 184 | } | |||
| 185 | X509_STORE_CTX_free(csc); | |||
| 186 | csc = NULL((void*)0); | |||
| 187 | ||||
| 188 | icert = X509_OBJECT_get0_X509(obj); | |||
| 189 | if (icert == NULL((void*)0)) { | |||
| 190 | LOG_DBG((LOG_POLICY, 30, "x509_generate_kn: "log_debug (LOG_POLICY, 30, "x509_generate_kn: " "missing certificates, cannot construct X509 chain" ) | |||
| 191 | "missing certificates, cannot construct X509 chain"))log_debug (LOG_POLICY, 30, "x509_generate_kn: " "missing certificates, cannot construct X509 chain" ); | |||
| 192 | goto fail; | |||
| 193 | } | |||
| 194 | if (!x509_cert_get_key(icert, &key)) { | |||
| 195 | LOG_DBG((LOG_POLICY, 30,log_debug (LOG_POLICY, 30, "x509_generate_kn: failed to get public key from cert" ) | |||
| 196 | "x509_generate_kn: failed to get public key from cert"))log_debug (LOG_POLICY, 30, "x509_generate_kn: failed to get public key from cert" ); | |||
| 197 | goto fail; | |||
| 198 | } | |||
| 199 | X509_OBJECT_free(obj); | |||
| 200 | obj = NULL((void*)0); | |||
| 201 | ||||
| 202 | dc.dec_algorithm = KEYNOTE_ALGORITHM_RSA6; | |||
| 203 | dc.dec_key = key; | |||
| 204 | skey = kn_encode_key(&dc, INTERNAL_ENC_PKCS11, ENCODING_HEX1, | |||
| 205 | KEYNOTE_PUBLIC_KEY0); | |||
| 206 | if (keynote_errno == ERROR_MEMORY-1) { | |||
| 207 | log_error("x509_generate_kn: failed to get memory for public " | |||
| 208 | "key"); | |||
| 209 | LOG_DBG((LOG_POLICY, 30, "x509_generate_kn: cannot get issuer "log_debug (LOG_POLICY, 30, "x509_generate_kn: cannot get issuer " "key") | |||
| 210 | "key"))log_debug (LOG_POLICY, 30, "x509_generate_kn: cannot get issuer " "key"); | |||
| 211 | goto fail; | |||
| 212 | } | |||
| 213 | if (!skey) { | |||
| 214 | LOG_DBG((LOG_POLICY, 30, "x509_generate_kn: cannot get issuer "log_debug (LOG_POLICY, 30, "x509_generate_kn: cannot get issuer " "key") | |||
| 215 | "key"))log_debug (LOG_POLICY, 30, "x509_generate_kn: cannot get issuer " "key"); | |||
| 216 | goto fail; | |||
| 217 | } | |||
| 218 | ||||
| 219 | RSA_free(key); | |||
| 220 | key = NULL((void*)0); | |||
| 221 | ||||
| 222 | if (((tm = X509_get_notBeforeX509_getm_notBefore(cert)) == NULL((void*)0)) || | |||
| 223 | (tm->type != V_ASN1_UTCTIME23 && | |||
| 224 | tm->type != V_ASN1_GENERALIZEDTIME24)) { | |||
| 225 | tt = time(0); | |||
| 226 | strftime(before, 14, "%Y%m%d%H%M%S", localtime(&tt)); | |||
| 227 | timecomp = "LocalTimeOfDay"; | |||
| 228 | } else { | |||
| 229 | if (tm->data[tm->length - 1] == 'Z') { | |||
| 230 | timecomp = "GMTTimeOfDay"; | |||
| 231 | i = tm->length - 2; | |||
| 232 | } else { | |||
| 233 | timecomp = "LocalTimeOfDay"; | |||
| 234 | i = tm->length - 1; | |||
| 235 | } | |||
| 236 | ||||
| 237 | for (; i >= 0; i--) { | |||
| 238 | if (tm->data[i] < '0' || tm->data[i] > '9') { | |||
| 239 | LOG_DBG((LOG_POLICY, 30,log_debug (LOG_POLICY, 30, "x509_generate_kn: invalid data in " "NotValidBefore time field") | |||
| 240 | "x509_generate_kn: invalid data in "log_debug (LOG_POLICY, 30, "x509_generate_kn: invalid data in " "NotValidBefore time field") | |||
| 241 | "NotValidBefore time field"))log_debug (LOG_POLICY, 30, "x509_generate_kn: invalid data in " "NotValidBefore time field"); | |||
| 242 | goto fail; | |||
| 243 | } | |||
| 244 | } | |||
| 245 | ||||
| 246 | if (tm->type == V_ASN1_UTCTIME23) { | |||
| 247 | if ((tm->length < 10) || (tm->length > 13)) { | |||
| 248 | LOG_DBG((LOG_POLICY, 30,log_debug (LOG_POLICY, 30, "x509_generate_kn: invalid length " "of NotValidBefore time field (%d)", tm->length) | |||
| 249 | "x509_generate_kn: invalid length "log_debug (LOG_POLICY, 30, "x509_generate_kn: invalid length " "of NotValidBefore time field (%d)", tm->length) | |||
| 250 | "of NotValidBefore time field (%d)",log_debug (LOG_POLICY, 30, "x509_generate_kn: invalid length " "of NotValidBefore time field (%d)", tm->length) | |||
| 251 | tm->length))log_debug (LOG_POLICY, 30, "x509_generate_kn: invalid length " "of NotValidBefore time field (%d)", tm->length); | |||
| 252 | goto fail; | |||
| 253 | } | |||
| 254 | /* Validity checks. */ | |||
| 255 | if ((tm->data[2] != '0' && tm->data[2] != '1') || | |||
| 256 | (tm->data[2] == '0' && tm->data[3] == '0') || | |||
| 257 | (tm->data[2] == '1' && tm->data[3] > '2') || | |||
| 258 | (tm->data[4] > '3') || | |||
| 259 | (tm->data[4] == '0' && tm->data[5] == '0') || | |||
| 260 | (tm->data[4] == '3' && tm->data[5] > '1') || | |||
| 261 | (tm->data[6] > '2') || | |||
| 262 | (tm->data[6] == '2' && tm->data[7] > '3') || | |||
| 263 | (tm->data[8] > '5')) { | |||
| 264 | LOG_DBG((LOG_POLICY, 30,log_debug (LOG_POLICY, 30, "x509_generate_kn: invalid value in " "NotValidBefore time field") | |||
| 265 | "x509_generate_kn: invalid value in "log_debug (LOG_POLICY, 30, "x509_generate_kn: invalid value in " "NotValidBefore time field") | |||
| 266 | "NotValidBefore time field"))log_debug (LOG_POLICY, 30, "x509_generate_kn: invalid value in " "NotValidBefore time field"); | |||
| 267 | goto fail; | |||
| 268 | } | |||
| 269 | /* Stupid UTC tricks. */ | |||
| 270 | if (tm->data[0] < '5') | |||
| 271 | snprintf(before, sizeof before, "20%s", | |||
| 272 | tm->data); | |||
| 273 | else | |||
| 274 | snprintf(before, sizeof before, "19%s", | |||
| 275 | tm->data); | |||
| 276 | } else { /* V_ASN1_GENERICTIME */ | |||
| 277 | if ((tm->length < 12) || (tm->length > 15)) { | |||
| 278 | LOG_DBG((LOG_POLICY, 30,log_debug (LOG_POLICY, 30, "x509_generate_kn: invalid length of " "NotValidBefore time field (%d)", tm->length) | |||
| 279 | "x509_generate_kn: invalid length of "log_debug (LOG_POLICY, 30, "x509_generate_kn: invalid length of " "NotValidBefore time field (%d)", tm->length) | |||
| 280 | "NotValidBefore time field (%d)",log_debug (LOG_POLICY, 30, "x509_generate_kn: invalid length of " "NotValidBefore time field (%d)", tm->length) | |||
| 281 | tm->length))log_debug (LOG_POLICY, 30, "x509_generate_kn: invalid length of " "NotValidBefore time field (%d)", tm->length); | |||
| 282 | goto fail; | |||
| 283 | } | |||
| 284 | /* Validity checks. */ | |||
| 285 | if ((tm->data[4] != '0' && tm->data[4] != '1') || | |||
| 286 | (tm->data[4] == '0' && tm->data[5] == '0') || | |||
| 287 | (tm->data[4] == '1' && tm->data[5] > '2') || | |||
| 288 | (tm->data[6] > '3') || | |||
| 289 | (tm->data[6] == '0' && tm->data[7] == '0') || | |||
| 290 | (tm->data[6] == '3' && tm->data[7] > '1') || | |||
| 291 | (tm->data[8] > '2') || | |||
| 292 | (tm->data[8] == '2' && tm->data[9] > '3') || | |||
| 293 | (tm->data[10] > '5')) { | |||
| 294 | LOG_DBG((LOG_POLICY, 30,log_debug (LOG_POLICY, 30, "x509_generate_kn: invalid value in " "NotValidBefore time field") | |||
| 295 | "x509_generate_kn: invalid value in "log_debug (LOG_POLICY, 30, "x509_generate_kn: invalid value in " "NotValidBefore time field") | |||
| 296 | "NotValidBefore time field"))log_debug (LOG_POLICY, 30, "x509_generate_kn: invalid value in " "NotValidBefore time field"); | |||
| 297 | goto fail; | |||
| 298 | } | |||
| 299 | snprintf(before, sizeof before, "%s", tm->data); | |||
| 300 | } | |||
| 301 | ||||
| 302 | /* Fix missing seconds. */ | |||
| 303 | if (tm->length < 12) { | |||
| 304 | before[12] = '0'; | |||
| 305 | before[13] = '0'; | |||
| 306 | } | |||
| 307 | /* This will overwrite trailing 'Z'. */ | |||
| 308 | before[14] = '\0'; | |||
| 309 | } | |||
| 310 | ||||
| 311 | tm = X509_get_notAfterX509_getm_notAfter(cert); | |||
| 312 | if (tm == NULL((void*)0) || | |||
| 313 | (tm->type != V_ASN1_UTCTIME23 && | |||
| 314 | tm->type != V_ASN1_GENERALIZEDTIME24)) { | |||
| 315 | tt = time(0); | |||
| 316 | strftime(after, 14, "%Y%m%d%H%M%S", localtime(&tt)); | |||
| 317 | timecomp2 = "LocalTimeOfDay"; | |||
| 318 | } else { | |||
| 319 | if (tm->data[tm->length - 1] == 'Z') { | |||
| 320 | timecomp2 = "GMTTimeOfDay"; | |||
| 321 | i = tm->length - 2; | |||
| 322 | } else { | |||
| 323 | timecomp2 = "LocalTimeOfDay"; | |||
| 324 | i = tm->length - 1; | |||
| 325 | } | |||
| 326 | ||||
| 327 | for (; i >= 0; i--) { | |||
| 328 | if (tm->data[i] < '0' || tm->data[i] > '9') { | |||
| 329 | LOG_DBG((LOG_POLICY, 30,log_debug (LOG_POLICY, 30, "x509_generate_kn: invalid data in " "NotValidAfter time field") | |||
| 330 | "x509_generate_kn: invalid data in "log_debug (LOG_POLICY, 30, "x509_generate_kn: invalid data in " "NotValidAfter time field") | |||
| 331 | "NotValidAfter time field"))log_debug (LOG_POLICY, 30, "x509_generate_kn: invalid data in " "NotValidAfter time field"); | |||
| 332 | goto fail; | |||
| 333 | } | |||
| 334 | } | |||
| 335 | ||||
| 336 | if (tm->type == V_ASN1_UTCTIME23) { | |||
| 337 | if ((tm->length < 10) || (tm->length > 13)) { | |||
| 338 | LOG_DBG((LOG_POLICY, 30,log_debug (LOG_POLICY, 30, "x509_generate_kn: invalid length of " "NotValidAfter time field (%d)", tm->length) | |||
| 339 | "x509_generate_kn: invalid length of "log_debug (LOG_POLICY, 30, "x509_generate_kn: invalid length of " "NotValidAfter time field (%d)", tm->length) | |||
| 340 | "NotValidAfter time field (%d)",log_debug (LOG_POLICY, 30, "x509_generate_kn: invalid length of " "NotValidAfter time field (%d)", tm->length) | |||
| 341 | tm->length))log_debug (LOG_POLICY, 30, "x509_generate_kn: invalid length of " "NotValidAfter time field (%d)", tm->length); | |||
| 342 | goto fail; | |||
| 343 | } | |||
| 344 | /* Validity checks. */ | |||
| 345 | if ((tm->data[2] != '0' && tm->data[2] != '1') || | |||
| 346 | (tm->data[2] == '0' && tm->data[3] == '0') || | |||
| 347 | (tm->data[2] == '1' && tm->data[3] > '2') || | |||
| 348 | (tm->data[4] > '3') || | |||
| 349 | (tm->data[4] == '0' && tm->data[5] == '0') || | |||
| 350 | (tm->data[4] == '3' && tm->data[5] > '1') || | |||
| 351 | (tm->data[6] > '2') || | |||
| 352 | (tm->data[6] == '2' && tm->data[7] > '3') || | |||
| 353 | (tm->data[8] > '5')) { | |||
| 354 | LOG_DBG((LOG_POLICY, 30,log_debug (LOG_POLICY, 30, "x509_generate_kn: invalid value in " "NotValidAfter time field") | |||
| 355 | "x509_generate_kn: invalid value in "log_debug (LOG_POLICY, 30, "x509_generate_kn: invalid value in " "NotValidAfter time field") | |||
| 356 | "NotValidAfter time field"))log_debug (LOG_POLICY, 30, "x509_generate_kn: invalid value in " "NotValidAfter time field"); | |||
| 357 | goto fail; | |||
| 358 | } | |||
| 359 | /* Stupid UTC tricks. */ | |||
| 360 | if (tm->data[0] < '5') | |||
| 361 | snprintf(after, sizeof after, "20%s", | |||
| 362 | tm->data); | |||
| 363 | else | |||
| 364 | snprintf(after, sizeof after, "19%s", | |||
| 365 | tm->data); | |||
| 366 | } else { /* V_ASN1_GENERICTIME */ | |||
| 367 | if ((tm->length < 12) || (tm->length > 15)) { | |||
| 368 | LOG_DBG((LOG_POLICY, 30,log_debug (LOG_POLICY, 30, "x509_generate_kn: invalid length of " "NotValidAfter time field (%d)", tm->length) | |||
| 369 | "x509_generate_kn: invalid length of "log_debug (LOG_POLICY, 30, "x509_generate_kn: invalid length of " "NotValidAfter time field (%d)", tm->length) | |||
| 370 | "NotValidAfter time field (%d)",log_debug (LOG_POLICY, 30, "x509_generate_kn: invalid length of " "NotValidAfter time field (%d)", tm->length) | |||
| 371 | tm->length))log_debug (LOG_POLICY, 30, "x509_generate_kn: invalid length of " "NotValidAfter time field (%d)", tm->length); | |||
| 372 | goto fail; | |||
| 373 | } | |||
| 374 | /* Validity checks. */ | |||
| 375 | if ((tm->data[4] != '0' && tm->data[4] != '1') || | |||
| 376 | (tm->data[4] == '0' && tm->data[5] == '0') || | |||
| 377 | (tm->data[4] == '1' && tm->data[5] > '2') || | |||
| 378 | (tm->data[6] > '3') || | |||
| 379 | (tm->data[6] == '0' && tm->data[7] == '0') || | |||
| 380 | (tm->data[6] == '3' && tm->data[7] > '1') || | |||
| 381 | (tm->data[8] > '2') || | |||
| 382 | (tm->data[8] == '2' && tm->data[9] > '3') || | |||
| 383 | (tm->data[10] > '5')) { | |||
| 384 | LOG_DBG((LOG_POLICY, 30,log_debug (LOG_POLICY, 30, "x509_generate_kn: invalid value in " "NotValidAfter time field") | |||
| 385 | "x509_generate_kn: invalid value in "log_debug (LOG_POLICY, 30, "x509_generate_kn: invalid value in " "NotValidAfter time field") | |||
| 386 | "NotValidAfter time field"))log_debug (LOG_POLICY, 30, "x509_generate_kn: invalid value in " "NotValidAfter time field"); | |||
| 387 | goto fail; | |||
| 388 | } | |||
| 389 | snprintf(after, sizeof after, "%s", tm->data); | |||
| 390 | } | |||
| 391 | ||||
| 392 | /* Fix missing seconds. */ | |||
| 393 | if (tm->length < 12) { | |||
| 394 | after[12] = '0'; | |||
| 395 | after[13] = '0'; | |||
| 396 | } | |||
| 397 | after[14] = '\0'; /* This will overwrite trailing 'Z' */ | |||
| 398 | } | |||
| 399 | ||||
| 400 | if (asprintf(&buf, fmt, skey, ikey, timecomp, before, timecomp2, | |||
| 401 | after) == -1) { | |||
| 402 | log_error("x509_generate_kn: " | |||
| 403 | "failed to allocate memory for KeyNote credential"); | |||
| 404 | goto fail; | |||
| 405 | } | |||
| 406 | ||||
| 407 | free(ikey); | |||
| 408 | ikey = NULL((void*)0); | |||
| 409 | free(skey); | |||
| 410 | skey = NULL((void*)0); | |||
| 411 | ||||
| 412 | if (kn_add_assertion(id, buf, strlen(buf), ASSERT_FLAG_LOCAL0x0001) == -1) { | |||
| 413 | LOG_DBG((LOG_POLICY, 30,log_debug (LOG_POLICY, 30, "x509_generate_kn: failed to add new KeyNote credential" ) | |||
| 414 | "x509_generate_kn: failed to add new KeyNote credential"))log_debug (LOG_POLICY, 30, "x509_generate_kn: failed to add new KeyNote credential" ); | |||
| 415 | goto fail; | |||
| 416 | } | |||
| 417 | /* We could print the assertion here, but log_print() truncates... */ | |||
| 418 | LOG_DBG((LOG_POLICY, 60, "x509_generate_kn: added credential"))log_debug (LOG_POLICY, 60, "x509_generate_kn: added credential" ); | |||
| 419 | ||||
| 420 | free(buf); | |||
| 421 | buf = NULL((void*)0); | |||
| 422 | ||||
| 423 | if (!X509_NAME_oneline(issuer, isname, 256)) { | |||
| 424 | LOG_DBG((LOG_POLICY, 50,log_debug (LOG_POLICY, 50, "x509_generate_kn: " "X509_NAME_oneline (issuer, ...) failed" ) | |||
| 425 | "x509_generate_kn: "log_debug (LOG_POLICY, 50, "x509_generate_kn: " "X509_NAME_oneline (issuer, ...) failed" ) | |||
| 426 | "X509_NAME_oneline (issuer, ...) failed"))log_debug (LOG_POLICY, 50, "x509_generate_kn: " "X509_NAME_oneline (issuer, ...) failed" ); | |||
| 427 | goto fail; | |||
| 428 | } | |||
| 429 | if (!X509_NAME_oneline(subject, subname, 256)) { | |||
| 430 | LOG_DBG((LOG_POLICY, 50,log_debug (LOG_POLICY, 50, "x509_generate_kn: " "X509_NAME_oneline (subject, ...) failed" ) | |||
| 431 | "x509_generate_kn: "log_debug (LOG_POLICY, 50, "x509_generate_kn: " "X509_NAME_oneline (subject, ...) failed" ) | |||
| 432 | "X509_NAME_oneline (subject, ...) failed"))log_debug (LOG_POLICY, 50, "x509_generate_kn: " "X509_NAME_oneline (subject, ...) failed" ); | |||
| 433 | goto fail; | |||
| 434 | } | |||
| 435 | if (asprintf(&buf, fmt2, isname, subname, timecomp, before, | |||
| 436 | timecomp2, after) == -1) { | |||
| 437 | log_error("x509_generate_kn: malloc failed"); | |||
| 438 | return 0; | |||
| 439 | } | |||
| 440 | ||||
| 441 | if (kn_add_assertion(id, buf, strlen(buf), ASSERT_FLAG_LOCAL0x0001) == -1) { | |||
| 442 | LOG_DBG((LOG_POLICY, 30,log_debug (LOG_POLICY, 30, "x509_generate_kn: failed to add new KeyNote credential" ) | |||
| 443 | "x509_generate_kn: failed to add new KeyNote credential"))log_debug (LOG_POLICY, 30, "x509_generate_kn: failed to add new KeyNote credential" ); | |||
| 444 | goto fail; | |||
| 445 | } | |||
| 446 | LOG_DBG((LOG_POLICY, 80, "x509_generate_kn: added credential:\n%s",log_debug (LOG_POLICY, 80, "x509_generate_kn: added credential:\n%s" , buf) | |||
| 447 | buf))log_debug (LOG_POLICY, 80, "x509_generate_kn: added credential:\n%s" , buf); | |||
| 448 | ||||
| 449 | free(buf); | |||
| 450 | return 1; | |||
| 451 | ||||
| 452 | fail: | |||
| 453 | X509_STORE_CTX_free(csc); | |||
| 454 | X509_OBJECT_free(obj); | |||
| 455 | free(buf); | |||
| 456 | free(skey); | |||
| 457 | free(ikey); | |||
| 458 | if (key) | |||
| 459 | RSA_free(key); | |||
| 460 | ||||
| 461 | return 0; | |||
| 462 | } | |||
| 463 | ||||
| 464 | static u_int16_t | |||
| 465 | x509_hash(u_int8_t *id, size_t len) | |||
| 466 | { | |||
| 467 | u_int16_t bucket = 0; | |||
| 468 | size_t i; | |||
| 469 | ||||
| 470 | /* XXX We might resize if we are crossing a certain threshold. */ | |||
| 471 | for (i = 4; i < (len & ~1); i += 2) { | |||
| 472 | /* Doing it this way avoids alignment problems. */ | |||
| 473 | bucket ^= (id[i] + 1) * (id[i + 1] + 257); | |||
| 474 | } | |||
| 475 | /* Hash in the last character of odd length IDs too. */ | |||
| 476 | if (i < len) | |||
| 477 | bucket ^= (id[i] + 1) * (id[i] + 257); | |||
| 478 | ||||
| 479 | bucket &= bucket_mask; | |||
| 480 | return bucket; | |||
| 481 | } | |||
| 482 | ||||
| 483 | static void | |||
| 484 | x509_hash_init(void) | |||
| 485 | { | |||
| 486 | struct x509_hash *certh; | |||
| 487 | int i; | |||
| 488 | ||||
| 489 | bucket_mask = (1 << INITIAL_BUCKET_BITS6) - 1; | |||
| 490 | ||||
| 491 | /* If reinitializing, free existing entries. */ | |||
| 492 | if (x509_tab) { | |||
| 493 | for (i = 0; i <= bucket_mask; i++) | |||
| 494 | for (certh = LIST_FIRST(&x509_tab[i])((&x509_tab[i])->lh_first); certh; | |||
| 495 | certh = LIST_FIRST(&x509_tab[i])((&x509_tab[i])->lh_first)) { | |||
| 496 | LIST_REMOVE(certh, link)do { if ((certh)->link.le_next != ((void*)0)) (certh)-> link.le_next->link.le_prev = (certh)->link.le_prev; *(certh )->link.le_prev = (certh)->link.le_next; ; ; } while (0 ); | |||
| 497 | free(certh); | |||
| 498 | } | |||
| 499 | free(x509_tab); | |||
| 500 | } | |||
| 501 | x509_tab = calloc(bucket_mask + 1, sizeof(struct x509_list)); | |||
| 502 | if (!x509_tab) | |||
| 503 | log_fatal("x509_hash_init: malloc (%lu) failed", | |||
| 504 | (bucket_mask + 1) * | |||
| 505 | (unsigned long)sizeof(struct x509_list)); | |||
| 506 | for (i = 0; i <= bucket_mask; i++) { | |||
| 507 | LIST_INIT(&x509_tab[i])do { ((&x509_tab[i])->lh_first) = ((void*)0); } while ( 0); | |||
| 508 | } | |||
| 509 | } | |||
| 510 | ||||
| 511 | /* Lookup a certificate by an ID blob. */ | |||
| 512 | static X509 * | |||
| 513 | x509_hash_find(u_int8_t *id, size_t len) | |||
| 514 | { | |||
| 515 | struct x509_hash *cert; | |||
| 516 | u_int8_t **cid; | |||
| 517 | u_int32_t *clen; | |||
| 518 | int n, i, id_found; | |||
| 519 | ||||
| 520 | for (cert = LIST_FIRST(&x509_tab[x509_hash(id, len)])((&x509_tab[x509_hash(id, len)])->lh_first); cert; | |||
| 521 | cert = LIST_NEXT(cert, link)((cert)->link.le_next)) { | |||
| 522 | if (!x509_cert_get_subjects(cert->cert, &n, &cid, &clen)) | |||
| 523 | continue; | |||
| 524 | ||||
| 525 | id_found = 0; | |||
| 526 | for (i = 0; i < n; i++) { | |||
| 527 | LOG_DBG_BUF((LOG_CRYPTO, 70, "cert_cmp", id, len))log_debug_buf (LOG_CRYPTO, 70, "cert_cmp", id, len); | |||
| 528 | LOG_DBG_BUF((LOG_CRYPTO, 70, "cert_cmp", cid[i],log_debug_buf (LOG_CRYPTO, 70, "cert_cmp", cid[i], clen[i]) | |||
| 529 | clen[i]))log_debug_buf (LOG_CRYPTO, 70, "cert_cmp", cid[i], clen[i]); | |||
| 530 | /* | |||
| 531 | * XXX This identity predicate needs to be | |||
| 532 | * understood. | |||
| 533 | */ | |||
| 534 | if (clen[i] == len && id[0] == cid[i][0] && | |||
| ||||
| 535 | memcmp(id + 4, cid[i] + 4, len - 4) == 0) { | |||
| 536 | id_found++; | |||
| 537 | break; | |||
| 538 | } | |||
| 539 | } | |||
| 540 | cert_free_subjects(n, cid, clen); | |||
| 541 | if (!id_found) | |||
| 542 | continue; | |||
| 543 | ||||
| 544 | LOG_DBG((LOG_CRYPTO, 70, "x509_hash_find: return X509 %p",log_debug (LOG_CRYPTO, 70, "x509_hash_find: return X509 %p", cert ->cert) | |||
| 545 | cert->cert))log_debug (LOG_CRYPTO, 70, "x509_hash_find: return X509 %p", cert ->cert); | |||
| 546 | return cert->cert; | |||
| 547 | } | |||
| 548 | ||||
| 549 | LOG_DBG((LOG_CRYPTO, 70,log_debug (LOG_CRYPTO, 70, "x509_hash_find: no certificate matched query" ) | |||
| 550 | "x509_hash_find: no certificate matched query"))log_debug (LOG_CRYPTO, 70, "x509_hash_find: no certificate matched query" ); | |||
| 551 | return 0; | |||
| 552 | } | |||
| 553 | ||||
| 554 | static int | |||
| 555 | x509_hash_enter(X509 *cert) | |||
| 556 | { | |||
| 557 | u_int16_t bucket = 0; | |||
| 558 | u_int8_t **id; | |||
| 559 | u_int32_t *len; | |||
| 560 | struct x509_hash *certh; | |||
| 561 | int n, i; | |||
| 562 | ||||
| 563 | if (!x509_cert_get_subjects(cert, &n, &id, &len)) { | |||
| 564 | log_print("x509_hash_enter: cannot retrieve subjects"); | |||
| 565 | return 0; | |||
| 566 | } | |||
| 567 | for (i = 0; i < n; i++) { | |||
| 568 | certh = calloc(1, sizeof *certh); | |||
| 569 | if (!certh) { | |||
| 570 | cert_free_subjects(n, id, len); | |||
| 571 | log_error("x509_hash_enter: calloc (1, %lu) failed", | |||
| 572 | (unsigned long)sizeof *certh); | |||
| 573 | return 0; | |||
| 574 | } | |||
| 575 | certh->cert = cert; | |||
| 576 | ||||
| 577 | bucket = x509_hash(id[i], len[i]); | |||
| 578 | ||||
| 579 | LIST_INSERT_HEAD(&x509_tab[bucket], certh, link)do { if (((certh)->link.le_next = (&x509_tab[bucket])-> lh_first) != ((void*)0)) (&x509_tab[bucket])->lh_first ->link.le_prev = &(certh)->link.le_next; (&x509_tab [bucket])->lh_first = (certh); (certh)->link.le_prev = & (&x509_tab[bucket])->lh_first; } while (0); | |||
| 580 | LOG_DBG((LOG_CRYPTO, 70,log_debug (LOG_CRYPTO, 70, "x509_hash_enter: cert %p added to bucket %d" , cert, bucket) | |||
| 581 | "x509_hash_enter: cert %p added to bucket %d",log_debug (LOG_CRYPTO, 70, "x509_hash_enter: cert %p added to bucket %d" , cert, bucket) | |||
| 582 | cert, bucket))log_debug (LOG_CRYPTO, 70, "x509_hash_enter: cert %p added to bucket %d" , cert, bucket); | |||
| 583 | } | |||
| 584 | cert_free_subjects(n, id, len); | |||
| 585 | ||||
| 586 | return 1; | |||
| 587 | } | |||
| 588 | ||||
| 589 | /* X509 Certificate Handling functions. */ | |||
| 590 | ||||
| 591 | int | |||
| 592 | x509_read_from_dir(X509_STORE *ctx, char *name, int hash, int *pcount) | |||
| 593 | { | |||
| 594 | FILE *certfp; | |||
| 595 | X509 *cert; | |||
| 596 | struct stat sb; | |||
| 597 | char fullname[PATH_MAX1024]; | |||
| 598 | char file[PATH_MAX1024]; | |||
| 599 | int fd; | |||
| 600 | ||||
| 601 | if (strlen(name) >= sizeof fullname - 1) { | |||
| 602 | log_print("x509_read_from_dir: directory name too long"); | |||
| 603 | return 0; | |||
| 604 | } | |||
| 605 | LOG_DBG((LOG_CRYPTO, 40, "x509_read_from_dir: reading certs from %s",log_debug (LOG_CRYPTO, 40, "x509_read_from_dir: reading certs from %s" , name) | |||
| 606 | name))log_debug (LOG_CRYPTO, 40, "x509_read_from_dir: reading certs from %s" , name); | |||
| 607 | ||||
| 608 | if (monitor_req_readdir(name) == -1) { | |||
| 609 | LOG_DBG((LOG_CRYPTO, 10,log_debug (LOG_CRYPTO, 10, "x509_read_from_dir: opendir (\"%s\") failed: %s" , name, strerror((*__errno()))) | |||
| 610 | "x509_read_from_dir: opendir (\"%s\") failed: %s",log_debug (LOG_CRYPTO, 10, "x509_read_from_dir: opendir (\"%s\") failed: %s" , name, strerror((*__errno()))) | |||
| 611 | name, strerror(errno)))log_debug (LOG_CRYPTO, 10, "x509_read_from_dir: opendir (\"%s\") failed: %s" , name, strerror((*__errno()))); | |||
| 612 | return 0; | |||
| 613 | } | |||
| 614 | ||||
| 615 | while ((fd = monitor_readdir(file, sizeof file)) != -1) { | |||
| 616 | LOG_DBG((LOG_CRYPTO, 60,log_debug (LOG_CRYPTO, 60, "x509_read_from_dir: reading certificate %s" , file) | |||
| 617 | "x509_read_from_dir: reading certificate %s",log_debug (LOG_CRYPTO, 60, "x509_read_from_dir: reading certificate %s" , file) | |||
| 618 | file))log_debug (LOG_CRYPTO, 60, "x509_read_from_dir: reading certificate %s" , file); | |||
| 619 | ||||
| 620 | if (fstat(fd, &sb) == -1) { | |||
| 621 | log_error("x509_read_from_dir: fstat failed"); | |||
| 622 | close(fd); | |||
| 623 | continue; | |||
| 624 | } | |||
| 625 | ||||
| 626 | if (!S_ISREG(sb.st_mode)((sb.st_mode & 0170000) == 0100000)) { | |||
| 627 | close(fd); | |||
| 628 | continue; | |||
| 629 | } | |||
| 630 | ||||
| 631 | if ((certfp = fdopen(fd, "r")) == NULL((void*)0)) { | |||
| 632 | log_error("x509_read_from_dir: fdopen failed"); | |||
| 633 | close(fd); | |||
| 634 | continue; | |||
| 635 | } | |||
| 636 | ||||
| 637 | #if SSLEAY_VERSION_NUMBER0x20000000L >= 0x00904100L | |||
| 638 | cert = PEM_read_X509(certfp, NULL((void*)0), NULL((void*)0), NULL((void*)0)); | |||
| 639 | #else | |||
| 640 | cert = PEM_read_X509(certfp, NULL((void*)0), NULL((void*)0)); | |||
| 641 | #endif | |||
| 642 | fclose(certfp); | |||
| 643 | ||||
| 644 | if (cert == NULL((void*)0)) { | |||
| 645 | log_print("x509_read_from_dir: PEM_read_X509 " | |||
| 646 | "failed for %s", file); | |||
| 647 | continue; | |||
| 648 | } | |||
| 649 | ||||
| 650 | if (pcount != NULL((void*)0)) | |||
| 651 | (*pcount)++; | |||
| 652 | ||||
| 653 | if (!X509_STORE_add_cert(ctx, cert)) { | |||
| 654 | /* | |||
| 655 | * This is actually expected if we have several | |||
| 656 | * certificates only differing in subjectAltName, | |||
| 657 | * which is not an something that is strange. | |||
| 658 | * Consider multi-homed machines. | |||
| 659 | */ | |||
| 660 | LOG_DBG((LOG_CRYPTO, 50,log_debug (LOG_CRYPTO, 50, "x509_read_from_dir: X509_STORE_add_cert failed " "for %s", file) | |||
| 661 | "x509_read_from_dir: X509_STORE_add_cert failed "log_debug (LOG_CRYPTO, 50, "x509_read_from_dir: X509_STORE_add_cert failed " "for %s", file) | |||
| 662 | "for %s", file))log_debug (LOG_CRYPTO, 50, "x509_read_from_dir: X509_STORE_add_cert failed " "for %s", file); | |||
| 663 | } | |||
| 664 | if (hash) | |||
| 665 | if (!x509_hash_enter(cert)) | |||
| 666 | log_print("x509_read_from_dir: " | |||
| 667 | "x509_hash_enter (%s) failed", | |||
| 668 | file); | |||
| 669 | } | |||
| 670 | ||||
| 671 | return 1; | |||
| 672 | } | |||
| 673 | ||||
| 674 | /* XXX share code with x509_read_from_dir() ? */ | |||
| 675 | int | |||
| 676 | x509_read_crls_from_dir(X509_STORE *ctx, char *name) | |||
| 677 | { | |||
| 678 | FILE *crlfp; | |||
| 679 | X509_CRL *crl; | |||
| 680 | struct stat sb; | |||
| 681 | char fullname[PATH_MAX1024]; | |||
| 682 | char file[PATH_MAX1024]; | |||
| 683 | int fd, off, size; | |||
| 684 | ||||
| 685 | if (strlen(name) >= sizeof fullname - 1) { | |||
| 686 | log_print("x509_read_crls_from_dir: directory name too long"); | |||
| 687 | return 0; | |||
| 688 | } | |||
| 689 | LOG_DBG((LOG_CRYPTO, 40, "x509_read_crls_from_dir: reading CRLs "log_debug (LOG_CRYPTO, 40, "x509_read_crls_from_dir: reading CRLs " "from %s", name) | |||
| 690 | "from %s", name))log_debug (LOG_CRYPTO, 40, "x509_read_crls_from_dir: reading CRLs " "from %s", name); | |||
| 691 | ||||
| 692 | if (monitor_req_readdir(name) == -1) { | |||
| 693 | LOG_DBG((LOG_CRYPTO, 10, "x509_read_crls_from_dir: opendir "log_debug (LOG_CRYPTO, 10, "x509_read_crls_from_dir: opendir " "(\"%s\") failed: %s", name, strerror((*__errno()))) | |||
| 694 | "(\"%s\") failed: %s", name, strerror(errno)))log_debug (LOG_CRYPTO, 10, "x509_read_crls_from_dir: opendir " "(\"%s\") failed: %s", name, strerror((*__errno()))); | |||
| 695 | return 0; | |||
| 696 | } | |||
| 697 | strlcpy(fullname, name, sizeof fullname); | |||
| 698 | off = strlen(fullname); | |||
| 699 | size = sizeof fullname - off; | |||
| 700 | ||||
| 701 | while ((fd = monitor_readdir(file, sizeof file)) != -1) { | |||
| 702 | LOG_DBG((LOG_CRYPTO, 60, "x509_read_crls_from_dir: reading "log_debug (LOG_CRYPTO, 60, "x509_read_crls_from_dir: reading " "CRL %s", file) | |||
| 703 | "CRL %s", file))log_debug (LOG_CRYPTO, 60, "x509_read_crls_from_dir: reading " "CRL %s", file); | |||
| 704 | ||||
| 705 | if (fstat(fd, &sb) == -1) { | |||
| 706 | log_error("x509_read_crls_from_dir: fstat failed"); | |||
| 707 | close(fd); | |||
| 708 | continue; | |||
| 709 | } | |||
| 710 | ||||
| 711 | if (!S_ISREG(sb.st_mode)((sb.st_mode & 0170000) == 0100000)) { | |||
| 712 | close(fd); | |||
| 713 | continue; | |||
| 714 | } | |||
| 715 | ||||
| 716 | if ((crlfp = fdopen(fd, "r")) == NULL((void*)0)) { | |||
| 717 | log_error("x509_read_crls_from_dir: fdopen failed"); | |||
| 718 | close(fd); | |||
| 719 | continue; | |||
| 720 | } | |||
| 721 | ||||
| 722 | crl = PEM_read_X509_CRL(crlfp, NULL((void*)0), NULL((void*)0), NULL((void*)0)); | |||
| 723 | ||||
| 724 | fclose(crlfp); | |||
| 725 | ||||
| 726 | if (crl == NULL((void*)0)) { | |||
| 727 | log_print("x509_read_crls_from_dir: " | |||
| 728 | "PEM_read_X509_CRL failed for %s", | |||
| 729 | file); | |||
| 730 | continue; | |||
| 731 | } | |||
| 732 | if (!X509_STORE_add_crl(ctx, crl)) { | |||
| 733 | LOG_DBG((LOG_CRYPTO, 50, "x509_read_crls_from_dir: "log_debug (LOG_CRYPTO, 50, "x509_read_crls_from_dir: " "X509_STORE_add_crl failed for %s" , file) | |||
| 734 | "X509_STORE_add_crl failed for %s", file))log_debug (LOG_CRYPTO, 50, "x509_read_crls_from_dir: " "X509_STORE_add_crl failed for %s" , file); | |||
| 735 | continue; | |||
| 736 | } | |||
| 737 | /* | |||
| 738 | * XXX This is to make x509_cert_validate set this (and | |||
| 739 | * XXX another) flag when validating certificates. Currently, | |||
| 740 | * XXX OpenSSL defaults to reject an otherwise valid | |||
| 741 | * XXX certificate (chain) if these flags are set but there | |||
| 742 | * XXX are no CRLs to check. The current workaround is to only | |||
| 743 | * XXX set the flags if we actually loaded some CRL data. | |||
| 744 | */ | |||
| 745 | X509_STORE_set_flags(ctx, X509_V_FLAG_CRL_CHECK0x4); | |||
| 746 | } | |||
| 747 | ||||
| 748 | return 1; | |||
| 749 | } | |||
| 750 | ||||
| 751 | /* Initialize our databases and load our own certificates. */ | |||
| 752 | int | |||
| 753 | x509_cert_init(void) | |||
| 754 | { | |||
| 755 | char *dirname; | |||
| 756 | ||||
| 757 | x509_hash_init(); | |||
| 758 | ||||
| 759 | /* Process CA certificates we will trust. */ | |||
| 760 | dirname = conf_get_str("X509-certificates", "CA-directory"); | |||
| 761 | if (!dirname) { | |||
| 762 | log_print("x509_cert_init: no CA-directory"); | |||
| 763 | return 0; | |||
| 764 | } | |||
| 765 | /* Free if already initialized. */ | |||
| 766 | if (x509_cas) | |||
| 767 | X509_STORE_free(x509_cas); | |||
| 768 | ||||
| 769 | x509_cas = X509_STORE_new(); | |||
| 770 | if (!x509_cas) { | |||
| 771 | log_print("x509_cert_init: creating new X509_STORE failed"); | |||
| 772 | return 0; | |||
| 773 | } | |||
| 774 | if (!x509_read_from_dir(x509_cas, dirname, 0, &n_x509_cas)) { | |||
| 775 | log_print("x509_cert_init: x509_read_from_dir failed"); | |||
| 776 | return 0; | |||
| 777 | } | |||
| 778 | /* Process client certificates we will accept. */ | |||
| 779 | dirname = conf_get_str("X509-certificates", "Cert-directory"); | |||
| 780 | if (!dirname) { | |||
| 781 | log_print("x509_cert_init: no Cert-directory"); | |||
| 782 | return 0; | |||
| 783 | } | |||
| 784 | /* Free if already initialized. */ | |||
| 785 | if (x509_certs) | |||
| 786 | X509_STORE_free(x509_certs); | |||
| 787 | ||||
| 788 | x509_certs = X509_STORE_new(); | |||
| 789 | if (!x509_certs) { | |||
| 790 | log_print("x509_cert_init: creating new X509_STORE failed"); | |||
| 791 | return 0; | |||
| 792 | } | |||
| 793 | if (!x509_read_from_dir(x509_certs, dirname, 1, NULL((void*)0))) { | |||
| 794 | log_print("x509_cert_init: x509_read_from_dir failed"); | |||
| 795 | return 0; | |||
| 796 | } | |||
| 797 | return 1; | |||
| 798 | } | |||
| 799 | ||||
| 800 | int | |||
| 801 | x509_crl_init(void) | |||
| 802 | { | |||
| 803 | /* | |||
| 804 | * XXX I'm not sure if the method to use CRLs in certificate validation | |||
| 805 | * is valid for OpenSSL versions prior to 0.9.7. For now, simply do not | |||
| 806 | * support it. | |||
| 807 | */ | |||
| 808 | char *dirname; | |||
| 809 | dirname = conf_get_str("X509-certificates", "CRL-directory"); | |||
| 810 | if (!dirname) { | |||
| 811 | log_print("x509_crl_init: no CRL-directory"); | |||
| 812 | return 0; | |||
| 813 | } | |||
| 814 | if (!x509_read_crls_from_dir(x509_cas, dirname)) { | |||
| 815 | LOG_DBG((LOG_MISC, 10,log_debug (LOG_MISC, 10, "x509_crl_init: x509_read_crls_from_dir failed" ) | |||
| 816 | "x509_crl_init: x509_read_crls_from_dir failed"))log_debug (LOG_MISC, 10, "x509_crl_init: x509_read_crls_from_dir failed" ); | |||
| 817 | return 0; | |||
| 818 | } | |||
| 819 | ||||
| 820 | return 1; | |||
| 821 | } | |||
| 822 | ||||
| 823 | void * | |||
| 824 | x509_cert_get(u_int8_t *asn, u_int32_t len) | |||
| 825 | { | |||
| 826 | return x509_from_asn(asn, len); | |||
| 827 | } | |||
| 828 | ||||
| 829 | int | |||
| 830 | x509_cert_validate(void *scert) | |||
| 831 | { | |||
| 832 | X509_STORE_CTX *csc; | |||
| 833 | X509_NAME *issuer, *subject; | |||
| 834 | X509 *cert = (X509 *) scert; | |||
| 835 | EVP_PKEY *key; | |||
| 836 | int res, err, flags; | |||
| 837 | ||||
| 838 | /* | |||
| 839 | * Validate the peer certificate by checking with the CA certificates | |||
| 840 | * we trust. | |||
| 841 | */ | |||
| 842 | csc = X509_STORE_CTX_new(); | |||
| 843 | if (csc == NULL((void*)0)) { | |||
| 844 | log_print("x509_cert_validate: failed to get memory for " | |||
| 845 | "certificate store"); | |||
| 846 | return 0; | |||
| 847 | } | |||
| 848 | X509_STORE_CTX_init(csc, x509_cas, cert, NULL((void*)0)); | |||
| 849 | /* XXX See comment in x509_read_crls_from_dir. */ | |||
| 850 | flags = X509_VERIFY_PARAM_get_flags(X509_STORE_get0_param(x509_cas)); | |||
| 851 | if (flags & X509_V_FLAG_CRL_CHECK0x4) { | |||
| 852 | X509_STORE_CTX_set_flags(csc, X509_V_FLAG_CRL_CHECK0x4); | |||
| 853 | X509_STORE_CTX_set_flags(csc, X509_V_FLAG_CRL_CHECK_ALL0x8); | |||
| 854 | } | |||
| 855 | res = X509_verify_cert(csc); | |||
| 856 | err = X509_STORE_CTX_get_error(csc); | |||
| 857 | X509_STORE_CTX_free(csc); | |||
| 858 | ||||
| 859 | /* | |||
| 860 | * Return if validation succeeded or self-signed certs are not | |||
| 861 | * accepted. | |||
| 862 | * | |||
| 863 | * XXX X509_verify_cert seems to return -1 if the validation should be | |||
| 864 | * retried somehow. We take this as an error and give up. | |||
| 865 | */ | |||
| 866 | if (res > 0) | |||
| 867 | return 1; | |||
| 868 | else if (res < 0 || | |||
| 869 | (res == 0 && err != X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT18)) { | |||
| 870 | if (err) | |||
| 871 | log_print("x509_cert_validate: %.100s", | |||
| 872 | X509_verify_cert_error_string(err)); | |||
| 873 | return 0; | |||
| 874 | } else if (!conf_get_str("X509-certificates", "Accept-self-signed")) { | |||
| 875 | if (err) | |||
| 876 | log_print("x509_cert_validate: %.100s", | |||
| 877 | X509_verify_cert_error_string(err)); | |||
| 878 | return 0; | |||
| 879 | } | |||
| 880 | issuer = X509_get_issuer_name(cert); | |||
| 881 | subject = X509_get_subject_name(cert); | |||
| 882 | ||||
| 883 | if (!issuer || !subject || X509_NAME_cmp(issuer, subject)) | |||
| 884 | return 0; | |||
| 885 | ||||
| 886 | key = X509_get_pubkey(cert); | |||
| 887 | if (!key) { | |||
| 888 | log_print("x509_cert_validate: could not get public key from " | |||
| 889 | "self-signed cert"); | |||
| 890 | return 0; | |||
| 891 | } | |||
| 892 | if (X509_verify(cert, key) == -1) { | |||
| 893 | log_print("x509_cert_validate: self-signed cert is bad"); | |||
| 894 | return 0; | |||
| 895 | } | |||
| 896 | return 1; | |||
| 897 | } | |||
| 898 | ||||
| 899 | int | |||
| 900 | x509_cert_insert(int id, void *scert) | |||
| 901 | { | |||
| 902 | X509 *cert; | |||
| 903 | int res; | |||
| 904 | ||||
| 905 | cert = X509_dup((X509 *)scert); | |||
| 906 | if (!cert) { | |||
| 907 | log_print("x509_cert_insert: X509_dup failed"); | |||
| 908 | return 0; | |||
| 909 | } | |||
| 910 | if (x509_generate_kn(id, cert) == 0) { | |||
| 911 | LOG_DBG((LOG_POLICY, 50,log_debug (LOG_POLICY, 50, "x509_cert_insert: x509_generate_kn failed" ) | |||
| 912 | "x509_cert_insert: x509_generate_kn failed"))log_debug (LOG_POLICY, 50, "x509_cert_insert: x509_generate_kn failed" ); | |||
| 913 | X509_free(cert); | |||
| 914 | return 0; | |||
| 915 | } | |||
| 916 | ||||
| 917 | res = x509_hash_enter(cert); | |||
| 918 | if (!res) | |||
| 919 | X509_free(cert); | |||
| 920 | ||||
| 921 | return res; | |||
| 922 | } | |||
| 923 | ||||
| 924 | static struct x509_hash * | |||
| 925 | x509_hash_lookup(X509 *cert) | |||
| 926 | { | |||
| 927 | struct x509_hash *certh; | |||
| 928 | int i; | |||
| 929 | ||||
| 930 | for (i = 0; i <= bucket_mask; i++) | |||
| 931 | for (certh = LIST_FIRST(&x509_tab[i])((&x509_tab[i])->lh_first); certh; | |||
| 932 | certh = LIST_NEXT(certh, link)((certh)->link.le_next)) | |||
| 933 | if (certh->cert == cert) | |||
| 934 | return certh; | |||
| 935 | return 0; | |||
| 936 | } | |||
| 937 | ||||
| 938 | void | |||
| 939 | x509_cert_free(void *cert) | |||
| 940 | { | |||
| 941 | struct x509_hash *certh = x509_hash_lookup((X509 *) cert); | |||
| 942 | ||||
| 943 | if (certh) | |||
| 944 | LIST_REMOVE(certh, link)do { if ((certh)->link.le_next != ((void*)0)) (certh)-> link.le_next->link.le_prev = (certh)->link.le_prev; *(certh )->link.le_prev = (certh)->link.le_next; ; ; } while (0 ); | |||
| 945 | X509_free((X509 *) cert); | |||
| 946 | } | |||
| 947 | ||||
| 948 | /* Validate the BER Encoding of a RDNSequence in the CERT_REQ payload. */ | |||
| 949 | int | |||
| 950 | x509_certreq_validate(u_int8_t *asn, u_int32_t len) | |||
| 951 | { | |||
| 952 | int res = 1; | |||
| 953 | #if 0 | |||
| 954 | struct norm_type name = SEQOF("issuer", RDNSequence); | |||
| 955 | ||||
| 956 | if (!asn_template_clone(&name, 1) || | |||
| 957 | (asn = asn_decode_sequence(asn, len, &name)) == 0) { | |||
| 958 | log_print("x509_certreq_validate: can not decode 'acceptable " | |||
| 959 | "CA' info"); | |||
| 960 | res = 0; | |||
| 961 | } | |||
| 962 | asn_free(&name); | |||
| 963 | #endif | |||
| 964 | ||||
| 965 | /* XXX - not supported directly in SSL - later. */ | |||
| 966 | ||||
| 967 | return res; | |||
| 968 | } | |||
| 969 | ||||
| 970 | /* Decode the BER Encoding of a RDNSequence in the CERT_REQ payload. */ | |||
| 971 | int | |||
| 972 | x509_certreq_decode(void **pdata, u_int8_t *asn, u_int32_t len) | |||
| 973 | { | |||
| 974 | #if 0 | |||
| 975 | /* XXX This needs to be done later. */ | |||
| 976 | struct norm_type aca = SEQOF("aca", RDNSequence); | |||
| 977 | struct norm_type *tmp; | |||
| 978 | struct x509_aca naca, *ret; | |||
| 979 | ||||
| 980 | if (!asn_template_clone(&aca, 1) || | |||
| 981 | (asn = asn_decode_sequence(asn, len, &aca)) == 0) { | |||
| 982 | log_print("x509_certreq_decode: can not decode 'acceptable " | |||
| 983 | "CA' info"); | |||
| 984 | goto fail; | |||
| 985 | } | |||
| 986 | bzero(&naca, sizeof(naca)); | |||
| 987 | ||||
| 988 | tmp = asn_decompose("aca.RelativeDistinguishedName." | |||
| 989 | "AttributeValueAssertion", &aca); | |||
| 990 | if (!tmp) | |||
| 991 | goto fail; | |||
| 992 | x509_get_attribval(tmp, &naca.name1); | |||
| 993 | ||||
| 994 | tmp = asn_decompose("aca.RelativeDistinguishedName[1]" | |||
| 995 | ".AttributeValueAssertion", &aca); | |||
| 996 | if (tmp) | |||
| 997 | x509_get_attribval(tmp, &naca.name2); | |||
| 998 | ||||
| 999 | asn_free(&aca); | |||
| 1000 | ||||
| 1001 | ret = malloc(sizeof(struct x509_aca)); | |||
| 1002 | if (ret) | |||
| 1003 | memcpy(ret, &naca, sizeof(struct x509_aca)); | |||
| 1004 | else { | |||
| 1005 | log_error("x509_certreq_decode: malloc (%lu) failed", | |||
| 1006 | (unsigned long) sizeof(struct x509_aca)); | |||
| 1007 | x509_free_aca(&aca); | |||
| 1008 | } | |||
| 1009 | ||||
| 1010 | return ret; | |||
| 1011 | ||||
| 1012 | fail: | |||
| 1013 | asn_free(&aca); | |||
| 1014 | #endif | |||
| 1015 | return 1; | |||
| 1016 | } | |||
| 1017 | ||||
| 1018 | void | |||
| 1019 | x509_free_aca(void *blob) | |||
| 1020 | { | |||
| 1021 | struct x509_aca *aca = blob; | |||
| 1022 | ||||
| 1023 | if (aca != NULL((void*)0)) { | |||
| 1024 | free(aca->name1.type); | |||
| 1025 | free(aca->name1.val); | |||
| 1026 | ||||
| 1027 | free(aca->name2.type); | |||
| 1028 | free(aca->name2.val); | |||
| 1029 | } | |||
| 1030 | } | |||
| 1031 | ||||
| 1032 | X509 * | |||
| 1033 | x509_from_asn(u_char *asn, u_int len) | |||
| 1034 | { | |||
| 1035 | BIO *certh; | |||
| 1036 | X509 *scert = 0; | |||
| 1037 | ||||
| 1038 | certh = BIO_new(BIO_s_mem()); | |||
| 1039 | if (!certh) { | |||
| 1040 | log_error("x509_from_asn: BIO_new (BIO_s_mem ()) failed"); | |||
| 1041 | return 0; | |||
| 1042 | } | |||
| 1043 | if (BIO_write(certh, asn, len) == -1) { | |||
| 1044 | log_error("x509_from_asn: BIO_write failed\n"); | |||
| 1045 | goto end; | |||
| 1046 | } | |||
| 1047 | scert = d2i_X509_bio(certh, NULL((void*)0)); | |||
| 1048 | if (!scert) { | |||
| 1049 | log_print("x509_from_asn: d2i_X509_bio failed\n"); | |||
| 1050 | goto end; | |||
| 1051 | } | |||
| 1052 | end: | |||
| 1053 | BIO_free(certh); | |||
| 1054 | return scert; | |||
| 1055 | } | |||
| 1056 | ||||
| 1057 | /* | |||
| 1058 | * Obtain a certificate from an acceptable CA. | |||
| 1059 | * XXX We don't check if the certificate we find is from an accepted CA. | |||
| 1060 | */ | |||
| 1061 | int | |||
| 1062 | x509_cert_obtain(u_int8_t *id, size_t id_len, void *data, u_int8_t **cert, | |||
| 1063 | u_int32_t *certlen) | |||
| 1064 | { | |||
| 1065 | struct x509_aca *aca = data; | |||
| 1066 | X509 *scert; | |||
| 1067 | ||||
| 1068 | if (aca) | |||
| ||||
| 1069 | LOG_DBG((LOG_CRYPTO, 60, "x509_cert_obtain: "log_debug (LOG_CRYPTO, 60, "x509_cert_obtain: " "acceptable certificate authorities here" ) | |||
| 1070 | "acceptable certificate authorities here"))log_debug (LOG_CRYPTO, 60, "x509_cert_obtain: " "acceptable certificate authorities here" ); | |||
| 1071 | ||||
| 1072 | /* We need our ID to find a certificate. */ | |||
| 1073 | if (!id) { | |||
| 1074 | log_print("x509_cert_obtain: ID is missing"); | |||
| 1075 | return 0; | |||
| 1076 | } | |||
| 1077 | scert = x509_hash_find(id, id_len); | |||
| 1078 | if (!scert) | |||
| 1079 | return 0; | |||
| 1080 | ||||
| 1081 | x509_serialize(scert, cert, certlen); | |||
| 1082 | if (!*cert) | |||
| 1083 | return 0; | |||
| 1084 | return 1; | |||
| 1085 | } | |||
| 1086 | ||||
| 1087 | /* Returns a pointer to the subjectAltName information of X509 certificate. */ | |||
| 1088 | int | |||
| 1089 | x509_cert_subjectaltname(X509 *scert, u_int8_t **altname, u_int32_t *len) | |||
| 1090 | { | |||
| 1091 | X509_EXTENSION *subjectaltname; | |||
| 1092 | ASN1_OCTET_STRING *sanasn1data; | |||
| 1093 | u_int8_t *sandata; | |||
| 1094 | int extpos, santype, sanlen; | |||
| 1095 | ||||
| 1096 | extpos = X509_get_ext_by_NID(scert, NID_subject_alt_name85, -1); | |||
| 1097 | if (extpos == -1) { | |||
| 1098 | log_print("x509_cert_subjectaltname: " | |||
| 1099 | "certificate does not contain subjectAltName"); | |||
| 1100 | return 0; | |||
| 1101 | } | |||
| 1102 | subjectaltname = X509_get_ext(scert, extpos); | |||
| 1103 | sanasn1data = X509_EXTENSION_get_data(subjectaltname); | |||
| 1104 | ||||
| 1105 | if (!subjectaltname || !sanasn1data || !sanasn1data->data || | |||
| 1106 | sanasn1data->length < 4) { | |||
| 1107 | log_print("x509_cert_subjectaltname: invalid " | |||
| 1108 | "subjectaltname extension"); | |||
| 1109 | return 0; | |||
| 1110 | } | |||
| 1111 | /* SSL does not handle unknown ASN stuff well, do it by hand. */ | |||
| 1112 | sandata = sanasn1data->data; | |||
| 1113 | santype = sandata[2] & 0x3f; | |||
| 1114 | sanlen = sandata[3]; | |||
| 1115 | sandata += 4; | |||
| 1116 | ||||
| 1117 | /* | |||
| 1118 | * The test here used to be !=, but some certificates can include | |||
| 1119 | * extra stuff in subjectAltName, so we will just take the first | |||
| 1120 | * salen bytes, and not worry about what follows. | |||
| 1121 | */ | |||
| 1122 | if (sanlen + 4 > sanasn1data->length) { | |||
| 1123 | log_print("x509_cert_subjectaltname: subjectaltname invalid " | |||
| 1124 | "length"); | |||
| 1125 | return 0; | |||
| 1126 | } | |||
| 1127 | *len = sanlen; | |||
| 1128 | *altname = sandata; | |||
| 1129 | return santype; | |||
| 1130 | } | |||
| 1131 | ||||
| 1132 | int | |||
| 1133 | x509_cert_get_subjects(void *scert, int *cnt, u_int8_t ***id, | |||
| 1134 | u_int32_t **id_len) | |||
| 1135 | { | |||
| 1136 | X509 *cert = scert; | |||
| 1137 | X509_NAME *subject; | |||
| 1138 | int type; | |||
| 1139 | u_int8_t *altname; | |||
| 1140 | u_int32_t altlen; | |||
| 1141 | u_int8_t *buf = 0; | |||
| 1142 | unsigned char *ubuf; | |||
| 1143 | int i; | |||
| 1144 | ||||
| 1145 | *id = 0; | |||
| 1146 | *id_len = 0; | |||
| 1147 | ||||
| 1148 | /* | |||
| 1149 | * XXX There can be a collection of subjectAltNames, but for now I | |||
| 1150 | * only return the subjectName and a single subjectAltName, if | |||
| 1151 | * present. | |||
| 1152 | */ | |||
| 1153 | type = x509_cert_subjectaltname(cert, &altname, &altlen); | |||
| 1154 | if (!type) { | |||
| 1155 | *cnt = 1; | |||
| 1156 | altlen = 0; | |||
| 1157 | } else | |||
| 1158 | *cnt = 2; | |||
| 1159 | ||||
| 1160 | *id = calloc(*cnt, sizeof **id); | |||
| 1161 | if (!*id) { | |||
| 1162 | log_print("x509_cert_get_subject: malloc (%lu) failed", | |||
| 1163 | *cnt * (unsigned long)sizeof **id); | |||
| 1164 | *cnt = 0; | |||
| 1165 | goto fail; | |||
| 1166 | } | |||
| 1167 | *id_len = calloc(*cnt, sizeof **id_len); | |||
| 1168 | if (!*id_len) { | |||
| 1169 | log_print("x509_cert_get_subject: malloc (%lu) failed", | |||
| 1170 | *cnt * (unsigned long)sizeof **id_len); | |||
| 1171 | goto fail; | |||
| 1172 | } | |||
| 1173 | /* Stash the subjectName into the first slot. */ | |||
| 1174 | subject = X509_get_subject_name(cert); | |||
| 1175 | if (!subject) | |||
| 1176 | goto fail; | |||
| 1177 | ||||
| 1178 | (*id_len)[0] = | |||
| 1179 | ISAKMP_ID_DATA_OFF8 + i2d_X509_NAME(subject, NULL((void*)0)) - | |||
| 1180 | ISAKMP_GEN_SZ4; | |||
| 1181 | (*id)[0] = malloc((*id_len)[0]); | |||
| 1182 | if (!(*id)[0]) { | |||
| 1183 | log_print("x509_cert_get_subject: malloc (%d) failed", | |||
| 1184 | (*id_len)[0]); | |||
| 1185 | goto fail; | |||
| 1186 | } | |||
| 1187 | SET_ISAKMP_ID_TYPE((*id)[0] - ISAKMP_GEN_SZ, IPSEC_ID_DER_ASN1_DN)field_set_num (isakmp_id_fld + 0, (*id)[0] - 4, 9); | |||
| 1188 | ubuf = (*id)[0] + ISAKMP_ID_DATA_OFF8 - ISAKMP_GEN_SZ4; | |||
| 1189 | i2d_X509_NAME(subject, &ubuf); | |||
| 1190 | ||||
| 1191 | if (altlen) { | |||
| 1192 | /* Stash the subjectAltName into the second slot. */ | |||
| 1193 | buf = malloc(altlen + ISAKMP_ID_DATA_OFF8); | |||
| 1194 | if (!buf) { | |||
| 1195 | log_print("x509_cert_get_subject: malloc (%d) failed", | |||
| 1196 | altlen + ISAKMP_ID_DATA_OFF8); | |||
| 1197 | goto fail; | |||
| 1198 | } | |||
| 1199 | switch (type) { | |||
| 1200 | case X509v3_DNS_NAME2: | |||
| 1201 | SET_ISAKMP_ID_TYPE(buf, IPSEC_ID_FQDN)field_set_num (isakmp_id_fld + 0, buf, 2); | |||
| 1202 | break; | |||
| 1203 | ||||
| 1204 | case X509v3_RFC_NAME1: | |||
| 1205 | SET_ISAKMP_ID_TYPE(buf, IPSEC_ID_USER_FQDN)field_set_num (isakmp_id_fld + 0, buf, 3); | |||
| 1206 | break; | |||
| 1207 | ||||
| 1208 | case X509v3_IP_ADDR7: | |||
| 1209 | /* | |||
| 1210 | * XXX I dislike the numeric constants, but I don't | |||
| 1211 | * know what we should use otherwise. | |||
| 1212 | */ | |||
| 1213 | switch (altlen) { | |||
| 1214 | case 4: | |||
| 1215 | SET_ISAKMP_ID_TYPE(buf, IPSEC_ID_IPV4_ADDR)field_set_num (isakmp_id_fld + 0, buf, 1); | |||
| 1216 | break; | |||
| 1217 | ||||
| 1218 | case 16: | |||
| 1219 | SET_ISAKMP_ID_TYPE(buf, IPSEC_ID_IPV6_ADDR)field_set_num (isakmp_id_fld + 0, buf, 5); | |||
| 1220 | break; | |||
| 1221 | ||||
| 1222 | default: | |||
| 1223 | log_print("x509_cert_get_subject: invalid " | |||
| 1224 | "subjectAltName IPaddress length %d ", | |||
| 1225 | altlen); | |||
| 1226 | goto fail; | |||
| 1227 | } | |||
| 1228 | break; | |||
| 1229 | } | |||
| 1230 | ||||
| 1231 | SET_IPSEC_ID_PROTO(buf + ISAKMP_ID_DOI_DATA_OFF, 0)field_set_num (ipsec_id_fld + 0, buf + 5, 0); | |||
| 1232 | SET_IPSEC_ID_PORT(buf + ISAKMP_ID_DOI_DATA_OFF, 0)field_set_num (ipsec_id_fld + 1, buf + 5, 0); | |||
| 1233 | memcpy(buf + ISAKMP_ID_DATA_OFF8, altname, altlen); | |||
| 1234 | ||||
| 1235 | (*id_len)[1] = ISAKMP_ID_DATA_OFF8 + altlen - ISAKMP_GEN_SZ4; | |||
| 1236 | (*id)[1] = malloc((*id_len)[1]); | |||
| 1237 | if (!(*id)[1]) { | |||
| 1238 | log_print("x509_cert_get_subject: malloc (%d) failed", | |||
| 1239 | (*id_len)[1]); | |||
| 1240 | goto fail; | |||
| 1241 | } | |||
| 1242 | memcpy((*id)[1], buf + ISAKMP_GEN_SZ4, (*id_len)[1]); | |||
| 1243 | ||||
| 1244 | free(buf); | |||
| 1245 | buf = 0; | |||
| 1246 | } | |||
| 1247 | return 1; | |||
| 1248 | ||||
| 1249 | fail: | |||
| 1250 | for (i = 0; i < *cnt; i++) | |||
| 1251 | free((*id)[i]); | |||
| 1252 | free(*id); | |||
| 1253 | free(*id_len); | |||
| 1254 | free(buf); | |||
| 1255 | return 0; | |||
| 1256 | } | |||
| 1257 | ||||
| 1258 | int | |||
| 1259 | x509_cert_get_key(void *scert, void *keyp) | |||
| 1260 | { | |||
| 1261 | X509 *cert = scert; | |||
| 1262 | EVP_PKEY *key; | |||
| 1263 | ||||
| 1264 | key = X509_get_pubkey(cert); | |||
| 1265 | ||||
| 1266 | /* Check if we got the right key type. */ | |||
| 1267 | if (EVP_PKEY_id(key) != EVP_PKEY_RSA6) { | |||
| 1268 | log_print("x509_cert_get_key: public key is not a RSA key"); | |||
| 1269 | X509_free(cert); | |||
| 1270 | return 0; | |||
| 1271 | } | |||
| 1272 | *(RSA **)keyp = RSAPublicKey_dup(EVP_PKEY_get0_RSA(key)); | |||
| 1273 | ||||
| 1274 | return *(RSA **)keyp == NULL((void*)0) ? 0 : 1; | |||
| 1275 | } | |||
| 1276 | ||||
| 1277 | void * | |||
| 1278 | x509_cert_dup(void *scert) | |||
| 1279 | { | |||
| 1280 | return X509_dup(scert); | |||
| 1281 | } | |||
| 1282 | ||||
| 1283 | void | |||
| 1284 | x509_serialize(void *scert, u_int8_t **data, u_int32_t *datalen) | |||
| 1285 | { | |||
| 1286 | u_int8_t *p; | |||
| 1287 | ||||
| 1288 | *datalen = i2d_X509((X509 *)scert, NULL((void*)0)); | |||
| 1289 | *data = p = malloc(*datalen); | |||
| 1290 | if (!p) { | |||
| 1291 | log_error("x509_serialize: malloc (%d) failed", *datalen); | |||
| 1292 | return; | |||
| 1293 | } | |||
| 1294 | *datalen = i2d_X509((X509 *)scert, &p); | |||
| 1295 | } | |||
| 1296 | ||||
| 1297 | /* From cert to printable */ | |||
| 1298 | char * | |||
| 1299 | x509_printable(void *cert) | |||
| 1300 | { | |||
| 1301 | char *s; | |||
| 1302 | u_int8_t *data; | |||
| 1303 | u_int32_t datalen; | |||
| 1304 | ||||
| 1305 | x509_serialize(cert, &data, &datalen); | |||
| 1306 | if (!data) | |||
| 1307 | return 0; | |||
| 1308 | ||||
| 1309 | s = raw2hex(data, datalen); | |||
| 1310 | free(data); | |||
| 1311 | return s; | |||
| 1312 | } | |||
| 1313 | ||||
| 1314 | /* From printable to cert */ | |||
| 1315 | void * | |||
| 1316 | x509_from_printable(char *cert) | |||
| 1317 | { | |||
| 1318 | u_int8_t *buf; | |||
| 1319 | int plen, ret; | |||
| 1320 | void *foo; | |||
| 1321 | ||||
| 1322 | plen = (strlen(cert) + 1) / 2; | |||
| 1323 | buf = malloc(plen); | |||
| 1324 | if (!buf) { | |||
| 1325 | log_error("x509_from_printable: malloc (%d) failed", plen); | |||
| 1326 | return 0; | |||
| 1327 | } | |||
| 1328 | ret = hex2raw(cert, buf, plen); | |||
| 1329 | if (ret == -1) { | |||
| 1330 | free(buf); | |||
| 1331 | log_print("x509_from_printable: badly formatted cert"); | |||
| 1332 | return 0; | |||
| 1333 | } | |||
| 1334 | foo = x509_cert_get(buf, plen); | |||
| 1335 | free(buf); | |||
| 1336 | if (!foo) | |||
| 1337 | log_print("x509_from_printable: " | |||
| 1338 | "could not retrieve certificate"); | |||
| 1339 | return foo; | |||
| 1340 | } | |||
| 1341 | ||||
| 1342 | char * | |||
| 1343 | x509_DN_string(u_int8_t *asn1, size_t sz) | |||
| 1344 | { | |||
| 1345 | X509_NAME *name; | |||
| 1346 | const u_int8_t *p = asn1; | |||
| 1347 | char buf[256]; /* XXX Just a guess at a maximum length. */ | |||
| 1348 | long len = sz; | |||
| 1349 | ||||
| 1350 | name = d2i_X509_NAME(NULL((void*)0), &p, len); | |||
| 1351 | if (!name) { | |||
| 1352 | log_print("x509_DN_string: d2i_X509_NAME failed"); | |||
| 1353 | return 0; | |||
| 1354 | } | |||
| 1355 | if (!X509_NAME_oneline(name, buf, sizeof buf - 1)) { | |||
| 1356 | log_print("x509_DN_string: X509_NAME_oneline failed"); | |||
| 1357 | X509_NAME_free(name); | |||
| 1358 | return 0; | |||
| 1359 | } | |||
| 1360 | X509_NAME_free(name); | |||
| 1361 | buf[sizeof buf - 1] = '\0'; | |||
| 1362 | return strdup(buf); | |||
| 1363 | } | |||
| 1364 | ||||
| 1365 | /* Number of CAs we trust (to decide whether we can send CERT_REQ) */ | |||
| 1366 | int | |||
| 1367 | x509_ca_count(void) | |||
| 1368 | { | |||
| 1369 | return n_x509_cas; | |||
| 1370 | } |