| 1 | /* |
| 2 | * Copyright (C) 2015 Red Hat, Inc. |
| 3 | * |
| 4 | * This library is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU Lesser General Public |
| 6 | * License as published by the Free Software Foundation; either |
| 7 | * version 2.1 of the License, or (at your option) any later version. |
| 8 | * |
| 9 | * This library is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | * Lesser General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU Lesser General Public |
| 15 | * License along with this library. If not, see |
| 16 | * <http://www.gnu.org/licenses/>. |
| 17 | * |
| 18 | * Author: Daniel P. Berrange <berrange@redhat.com> |
| 19 | */ |
| 20 | |
| 21 | #include "qemu/osdep.h" |
| 22 | |
| 23 | #include <libtasn1.h> |
| 24 | |
| 25 | #include "crypto-tls-x509-helpers.h" |
| 26 | #include "crypto/init.h" |
| 27 | #include "qemu/sockets.h" |
| 28 | |
| 29 | #include "pkix_asn1_tab.c.inc" |
| 30 | |
| 31 | /* |
| 32 | * This stores some static data that is needed when |
| 33 | * encoding extensions in the x509 certs |
| 34 | */ |
| 35 | static asn1_node pkix_asn1; |
| 36 | |
| 37 | /* |
| 38 | * To avoid consuming random entropy to generate keys, |
| 39 | * here's one we prepared earlier :-) |
| 40 | */ |
| 41 | gnutls_x509_privkey_t privkey; |
| 42 | # define PRIVATE_KEY \ |
| 43 | "-----BEGIN RSA PRIVATE KEY-----\n" \ |
| 44 | "MIIG5AIBAAKCAYEAyjWyLSNm5PZvYUKUcDWGqbLX10b2ood+YaFjWSnJrqx/q3qh\n" \ |
| 45 | "rVGBJglD25AJENJsmZF3zPP1oMhfIxsXu63Hdkb6Rdlc2RUoUP34x9VC1izH25mR\n" \ |
| 46 | "6c8DPDp1d6IraZ/llDMI1HsBFz0qGWtvOHgm815XG4PAr/N8rDsuqfv/cJ01KlnO\n" \ |
| 47 | "0OdO5QRXCJf9g/dYd41MPu7wOXk9FqjQlmRoP59HgtJ+zUpE4z+Keruw9cMT9VJj\n" \ |
| 48 | "0oT+pQ9ysenqeZ3gbT224T1khrEhT5kifhtFLNyDssRchUUWH0hiqoOO1vgb+850\n" \ |
| 49 | "W6/1VdxvuPam48py4diSPi1Vip8NITCOBaX9FIpVp4Ruw4rTPVMNMjq9Cpx/DwMP\n" \ |
| 50 | "9MbfXfnaVaZaMrmq67/zPhl0eVbUrecH2hQ3ZB9oIF4GkNskzlWF5+yPy6zqk304\n" \ |
| 51 | "AKaiFR6jRyh3YfHo2XFqV8x/hxdsIEXOtEUGhSIcpynsW+ckUCartzu7xbhXjd4b\n" \ |
| 52 | "kxJT89+riPFYij09AgMBAAECggGBAKyFkaZXXROeejrmHlV6JZGlp+fhgM38gkRz\n" \ |
| 53 | "+Jp7P7rLLAY3E7gXIPQ91WqAAmwazFNdvHPd9USfkCQYmnAi/VoZhrCPmlsQZRxt\n" \ |
| 54 | "A5QjjOnEvSPMa6SrXZxGWDCg6R8uMCb4P+FhrPWR1thnRDZOtRTQ+crc50p3mHgt\n" \ |
| 55 | "6ktXWIJRbqnag8zSfQqCYGtRmhe8sfsWT+Yl4El4+jjaAVU/B364u7+PLmaiphGp\n" \ |
| 56 | "BdJfTsTwEpgtGkPj+osDmhzXcZkfq3V+fz5JLkemsCiQKmn4VJRpg8c3ZmE8NPNt\n" \ |
| 57 | "gRtGWZ4W3WKDvhotT65WpQx4+6R8Duux/blNPBmH1Upmwd7kj7GYFBArbCjgd9PT\n" \ |
| 58 | "xgfCSUZpgOZHHkcgSB+022a8XncXna7WYYij28SLtwImFyu0nNtqECFQHH5u+k6C\n" \ |
| 59 | "LRYBSN+3t3At8dQuk01NVrJBndmjmXRfxpqUtTdeaNgVpdUYRY98s30G68NYGSra\n" \ |
| 60 | "aEvhhRSghkcLNetkobpY9pUgeqW/tQKBwQDZHHK9nDMt/zk1TxtILeUSitPXcv1/\n" \ |
| 61 | "8ufXqO0miHdH23XuXhIEA6Ef26RRVGDGgpjkveDJK/1w5feJ4H/ni4Vclil/cm38\n" \ |
| 62 | "OwRqjjd7ElHJX6JQbsxEx/gNTk5/QW1iAL9TXUalgepsSXYT6AJ0/CJv0jmJSJ36\n" \ |
| 63 | "YoKMOM8uqzb2KhN6i+RlJRi5iY53kUhWTJq5ArWvNhUzQNSYODI4bNxlsKSBL2Ik\n" \ |
| 64 | "LZ5QKHuaEjQet0IlPlfIb4PzMm8CHa/urOcCgcEA7m3zW/lL5bIFoKPjWig5Lbn1\n" \ |
| 65 | "aHfrG2ngqzWtgWtfZqMH8OkZc1Mdhhmvd46titjiLjeI+UP/uHXR0068PnrNngzl\n" \ |
| 66 | "tTgwlakzu+bWzqhBm1F+3/341st/FEk07r0P/3/PhezVjwfO8c8Exj7pLxH4wrH0\n" \ |
| 67 | "ROHgDbClmlJRu6OO78wk1+Vapf5DWa8YfA+q+fdvr7KvgGyytheKMT/b/dsqOq7y\n" \ |
| 68 | "qZPjmaJKWAvV3RWG8lWHFSdHx2IAHMHfGr17Y/w7AoHBALzwZeYebeekiVucGSjq\n" \ |
| 69 | "T8SgLhT7zCIx+JMUPjVfYzaUhP/Iu7Lkma6IzWm9nW6Drpy5pUpMzwUWDCLfzU9q\n" \ |
| 70 | "eseFIl337kEn9wLn+t5OpgAyCqYmlftxbqvdrrBN9uvnrJjWvqk/8wsDrw9JxAGc\n" \ |
| 71 | "fjeD4nBXUqvYWLXApoR9mZoGKedmoH9pFig4zlO9ig8YITnKYuQ0k6SD0b8agJHc\n" \ |
| 72 | "Ir0YSUDnRGgpjvFBGbeOCe+FGbohk/EpItJc3IAh5740lwKBwAdXd2DjokSmYKn7\n" \ |
| 73 | "oeqKxofz6+yVlLW5YuOiuX78sWlVp87xPolgi84vSEnkKM/Xsc8+goc6YstpRVa+\n" \ |
| 74 | "W+mImoA9YW1dF5HkLeWhTAf9AlgoAEIhbeIfTgBv6KNZSv7RDrDPBBxtXx/vAfSg\n" \ |
| 75 | "x0ldwk0scZsVYXLKd67yzfV7KdGUdaX4N/xYgfZm/9gCG3+q8NN2KxVHQ5F71BOE\n" \ |
| 76 | "JeABOaGo9WvnU+DNMIDZjHJMUWVw4MHz/a/UArDf/2CxaPVBNQKBwASg6j4ohSTk\n" \ |
| 77 | "J7aE6RQ3OBmmDDpixcoCJt9u9SjHVYMlbs5CEJGVSczk0SG3y8P1lOWNDSRnMksZ\n" \ |
| 78 | "xWnHdP/ogcuYMuvK7UACNAF0zNddtzOhzcpNmejFj+WCHYY/UmPr2/Kf6t7Cxk2K\n" \ |
| 79 | "3cZ4tqWsiTmBT8Bknmah7L5DrhS+ZBJliDeFAA8fZHdMH0Xjr4UBp9kF90EMTdW1\n" \ |
| 80 | "Xr5uz7ZrMsYpYQI7mmyqV9SSjUg4iBXwVSoag1iDJ1K8Qg/L7Semgg==\n" \ |
| 81 | "-----END RSA PRIVATE KEY-----\n" |
| 82 | |
| 83 | /* |
| 84 | * This loads the private key we defined earlier |
| 85 | */ |
| 86 | static gnutls_x509_privkey_t test_tls_load_key(void) |
| 87 | { |
| 88 | gnutls_x509_privkey_t key; |
| 89 | const gnutls_datum_t data = { (unsigned char *)PRIVATE_KEY, |
| 90 | strlen(PRIVATE_KEY) }; |
| 91 | int err; |
| 92 | |
| 93 | err = gnutls_x509_privkey_init(&key); |
| 94 | if (err < 0) { |
| 95 | g_critical("Failed to init key %s", gnutls_strerror(err)); |
| 96 | abort(); |
| 97 | } |
| 98 | |
| 99 | err = gnutls_x509_privkey_import(key, &data, |
| 100 | GNUTLS_X509_FMT_PEM); |
| 101 | if (err < 0) { |
| 102 | if (err != GNUTLS_E_BASE64_UNEXPECTED_HEADER_ERROR && |
| 103 | err != GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE) { |
| 104 | g_critical("Failed to import key %s", gnutls_strerror(err)); |
| 105 | abort(); |
| 106 | } |
| 107 | |
| 108 | err = gnutls_x509_privkey_import_pkcs8( |
| 109 | key, &data, GNUTLS_X509_FMT_PEM, NULL, 0); |
| 110 | if (err < 0) { |
| 111 | g_critical("Failed to import PKCS8 key %s", gnutls_strerror(err)); |
| 112 | abort(); |
| 113 | } |
| 114 | } |
| 115 | |
| 116 | return key; |
| 117 | } |
| 118 | |
| 119 | |
| 120 | void test_tls_init(const char *keyfile) |
| 121 | { |
| 122 | qcrypto_init(&error_abort); |
| 123 | |
| 124 | if (asn1_array2tree(pkix_asn1_tab, &pkix_asn1, NULL) != ASN1_SUCCESS) { |
| 125 | abort(); |
| 126 | } |
| 127 | |
| 128 | privkey = test_tls_load_key(); |
| 129 | if (!g_file_set_contents(keyfile, PRIVATE_KEY, -1, NULL)) { |
| 130 | abort(); |
| 131 | } |
| 132 | } |
| 133 | |
| 134 | |
| 135 | void test_tls_cleanup(const char *keyfile) |
| 136 | { |
| 137 | asn1_delete_structure(&pkix_asn1); |
| 138 | gnutls_x509_privkey_deinit(privkey); |
| 139 | unlink(keyfile); |
| 140 | } |
| 141 | |
| 142 | /* |
| 143 | * Turns an ASN1 object into a DER encoded byte array |
| 144 | */ |
| 145 | static void test_tls_der_encode(asn1_node src, |
| 146 | const char *src_name, |
| 147 | gnutls_datum_t *res) |
| 148 | { |
| 149 | int size; |
| 150 | char *data = NULL; |
| 151 | |
| 152 | size = 0; |
| 153 | asn1_der_coding(src, src_name, NULL, &size, NULL); |
| 154 | |
| 155 | data = g_new0(char, size); |
| 156 | |
| 157 | asn1_der_coding(src, src_name, data, &size, NULL); |
| 158 | |
| 159 | res->data = (unsigned char *)data; |
| 160 | res->size = size; |
| 161 | } |
| 162 | |
| 163 | |
| 164 | static void |
| 165 | test_tls_get_ipaddr(const char *addrstr, |
| 166 | char **data, |
| 167 | int *datalen) |
| 168 | { |
| 169 | struct addrinfo *res; |
| 170 | struct addrinfo hints; |
| 171 | |
| 172 | memset(&hints, 0, sizeof(hints)); |
| 173 | hints.ai_flags = AI_NUMERICHOST; |
| 174 | g_assert(getaddrinfo(addrstr, NULL, &hints, &res) == 0); |
| 175 | |
| 176 | if (res->ai_family == AF_INET) { |
| 177 | struct sockaddr_in *in = (struct sockaddr_in *)res->ai_addr; |
| 178 | *datalen = sizeof(in->sin_addr); |
| 179 | *data = g_new(char, *datalen); |
| 180 | memcpy(*data, &in->sin_addr, *datalen); |
| 181 | } else if (res->ai_family == AF_INET6) { |
| 182 | struct sockaddr_in6 *in = (struct sockaddr_in6 *)res->ai_addr; |
| 183 | *datalen = sizeof(in->sin6_addr); |
| 184 | *data = g_new(char, *datalen); |
| 185 | memcpy(*data, &in->sin6_addr, *datalen); |
| 186 | } else { |
| 187 | g_assert_not_reached(); |
| 188 | } |
| 189 | freeaddrinfo(res); |
| 190 | } |
| 191 | |
| 192 | /* |
| 193 | * This is a fairly lame x509 certificate generator. |
| 194 | * |
| 195 | * Do not copy/use this code for generating real certificates |
| 196 | * since it leaves out many things that you would want in |
| 197 | * certificates for real world usage. |
| 198 | * |
| 199 | * This is good enough only for doing tests of the QEMU |
| 200 | * TLS certificate code |
| 201 | */ |
| 202 | void |
| 203 | test_tls_generate_cert(QCryptoTLSTestCertReq *req, |
| 204 | gnutls_x509_crt_t ca) |
| 205 | { |
| 206 | gnutls_x509_crt_t crt; |
| 207 | int err; |
| 208 | static char buffer[1024 * 1024]; |
| 209 | size_t size = sizeof(buffer); |
| 210 | char serial[5] = { 1, 2, 3, 4, 0 }; |
| 211 | gnutls_datum_t der; |
| 212 | time_t start = time(NULL) + (60 * 60 * req->start_offset); |
| 213 | time_t expire = time(NULL) + (60 * 60 * (req->expire_offset |
| 214 | ? req->expire_offset : 24)); |
| 215 | |
| 216 | /* |
| 217 | * Prepare our new certificate object |
| 218 | */ |
| 219 | err = gnutls_x509_crt_init(&crt); |
| 220 | if (err < 0) { |
| 221 | g_critical("Failed to initialize certificate %s", gnutls_strerror(err)); |
| 222 | abort(); |
| 223 | } |
| 224 | err = gnutls_x509_crt_set_key(crt, privkey); |
| 225 | if (err < 0) { |
| 226 | g_critical("Failed to set certificate key %s", gnutls_strerror(err)); |
| 227 | abort(); |
| 228 | } |
| 229 | |
| 230 | /* |
| 231 | * A v3 certificate is required in order to be able |
| 232 | * set any of the basic constraints, key purpose and |
| 233 | * key usage data |
| 234 | */ |
| 235 | gnutls_x509_crt_set_version(crt, 3); |
| 236 | |
| 237 | if (req->country) { |
| 238 | err = gnutls_x509_crt_set_dn_by_oid( |
| 239 | crt, GNUTLS_OID_X520_COUNTRY_NAME, 0, |
| 240 | req->country, strlen(req->country)); |
| 241 | if (err < 0) { |
| 242 | g_critical("Failed to set certificate country name %s", |
| 243 | gnutls_strerror(err)); |
| 244 | abort(); |
| 245 | } |
| 246 | } |
| 247 | if (req->cn) { |
| 248 | err = gnutls_x509_crt_set_dn_by_oid( |
| 249 | crt, GNUTLS_OID_X520_COMMON_NAME, 0, |
| 250 | req->cn, strlen(req->cn)); |
| 251 | if (err < 0) { |
| 252 | g_critical("Failed to set certificate common name %s", |
| 253 | gnutls_strerror(err)); |
| 254 | abort(); |
| 255 | } |
| 256 | } |
| 257 | |
| 258 | /* |
| 259 | * Setup the subject altnames, which are used |
| 260 | * for hostname checks in live sessions |
| 261 | */ |
| 262 | if (req->altname1) { |
| 263 | err = gnutls_x509_crt_set_subject_alt_name( |
| 264 | crt, GNUTLS_SAN_DNSNAME, |
| 265 | req->altname1, |
| 266 | strlen(req->altname1), |
| 267 | GNUTLS_FSAN_APPEND); |
| 268 | if (err < 0) { |
| 269 | g_critical("Failed to set certificate alt name %s", |
| 270 | gnutls_strerror(err)); |
| 271 | abort(); |
| 272 | } |
| 273 | } |
| 274 | if (req->altname2) { |
| 275 | err = gnutls_x509_crt_set_subject_alt_name( |
| 276 | crt, GNUTLS_SAN_DNSNAME, |
| 277 | req->altname2, |
| 278 | strlen(req->altname2), |
| 279 | GNUTLS_FSAN_APPEND); |
| 280 | if (err < 0) { |
| 281 | g_critical("Failed to set certificate %s alt name", |
| 282 | gnutls_strerror(err)); |
| 283 | abort(); |
| 284 | } |
| 285 | } |
| 286 | |
| 287 | /* |
| 288 | * IP address need to be put into the cert in their |
| 289 | * raw byte form, not strings, hence this is a little |
| 290 | * more complicated |
| 291 | */ |
| 292 | if (req->ipaddr1) { |
| 293 | char *data; |
| 294 | int len; |
| 295 | |
| 296 | test_tls_get_ipaddr(req->ipaddr1, &data, &len); |
| 297 | |
| 298 | err = gnutls_x509_crt_set_subject_alt_name( |
| 299 | crt, GNUTLS_SAN_IPADDRESS, |
| 300 | data, len, GNUTLS_FSAN_APPEND); |
| 301 | if (err < 0) { |
| 302 | g_critical("Failed to set certificate alt name %s", |
| 303 | gnutls_strerror(err)); |
| 304 | abort(); |
| 305 | } |
| 306 | g_free(data); |
| 307 | } |
| 308 | if (req->ipaddr2) { |
| 309 | char *data; |
| 310 | int len; |
| 311 | |
| 312 | test_tls_get_ipaddr(req->ipaddr2, &data, &len); |
| 313 | |
| 314 | err = gnutls_x509_crt_set_subject_alt_name( |
| 315 | crt, GNUTLS_SAN_IPADDRESS, |
| 316 | data, len, GNUTLS_FSAN_APPEND); |
| 317 | if (err < 0) { |
| 318 | g_critical("Failed to set certificate alt name %s", |
| 319 | gnutls_strerror(err)); |
| 320 | abort(); |
| 321 | } |
| 322 | g_free(data); |
| 323 | } |
| 324 | |
| 325 | |
| 326 | /* |
| 327 | * Basic constraints are used to decide if the cert |
| 328 | * is for a CA or not. We can't use the convenient |
| 329 | * gnutls API for setting this, since it hardcodes |
| 330 | * the 'critical' field which we want control over |
| 331 | */ |
| 332 | if (req->basicConstraintsEnable) { |
| 333 | asn1_node ext = NULL; |
| 334 | |
| 335 | asn1_create_element(pkix_asn1, "PKIX1.BasicConstraints", &ext); |
| 336 | asn1_write_value(ext, "cA", |
| 337 | req->basicConstraintsIsCA ? "TRUE" : "FALSE", 1); |
| 338 | asn1_write_value(ext, "pathLenConstraint", NULL, 0); |
| 339 | test_tls_der_encode(ext, "", &der); |
| 340 | err = gnutls_x509_crt_set_extension_by_oid( |
| 341 | crt, "2.5.29.19", |
| 342 | der.data, der.size, |
| 343 | req->basicConstraintsCritical); |
| 344 | if (err < 0) { |
| 345 | g_critical("Failed to set certificate basic constraints %s", |
| 346 | gnutls_strerror(err)); |
| 347 | g_free(der.data); |
| 348 | abort(); |
| 349 | } |
| 350 | asn1_delete_structure(&ext); |
| 351 | g_free(der.data); |
| 352 | } |
| 353 | |
| 354 | /* |
| 355 | * Next up the key usage extension. Again we can't |
| 356 | * use the gnutls API since it hardcodes the extension |
| 357 | * to be 'critical' |
| 358 | */ |
| 359 | if (req->keyUsageEnable) { |
| 360 | asn1_node ext = NULL; |
| 361 | char str[2]; |
| 362 | |
| 363 | str[0] = req->keyUsageValue & 0xff; |
| 364 | str[1] = (req->keyUsageValue >> 8) & 0xff; |
| 365 | |
| 366 | asn1_create_element(pkix_asn1, "PKIX1.KeyUsage", &ext); |
| 367 | asn1_write_value(ext, "", str, 9); |
| 368 | test_tls_der_encode(ext, "", &der); |
| 369 | err = gnutls_x509_crt_set_extension_by_oid( |
| 370 | crt, "2.5.29.15", |
| 371 | der.data, der.size, |
| 372 | req->keyUsageCritical); |
| 373 | if (err < 0) { |
| 374 | g_critical("Failed to set certificate key usage %s", |
| 375 | gnutls_strerror(err)); |
| 376 | g_free(der.data); |
| 377 | abort(); |
| 378 | } |
| 379 | asn1_delete_structure(&ext); |
| 380 | g_free(der.data); |
| 381 | } |
| 382 | |
| 383 | /* |
| 384 | * Finally the key purpose extension. This time |
| 385 | * gnutls has the opposite problem, always hardcoding |
| 386 | * it to be non-critical. So once again we have to |
| 387 | * set this the hard way building up ASN1 data ourselves |
| 388 | */ |
| 389 | if (req->keyPurposeEnable) { |
| 390 | asn1_node ext = NULL; |
| 391 | |
| 392 | asn1_create_element(pkix_asn1, "PKIX1.ExtKeyUsageSyntax", &ext); |
| 393 | if (req->keyPurposeOID1) { |
| 394 | asn1_write_value(ext, "", "NEW", 1); |
| 395 | asn1_write_value(ext, "?LAST", req->keyPurposeOID1, 1); |
| 396 | } |
| 397 | if (req->keyPurposeOID2) { |
| 398 | asn1_write_value(ext, "", "NEW", 1); |
| 399 | asn1_write_value(ext, "?LAST", req->keyPurposeOID2, 1); |
| 400 | } |
| 401 | test_tls_der_encode(ext, "", &der); |
| 402 | err = gnutls_x509_crt_set_extension_by_oid( |
| 403 | crt, "2.5.29.37", |
| 404 | der.data, der.size, |
| 405 | req->keyPurposeCritical); |
| 406 | if (err < 0) { |
| 407 | g_critical("Failed to set certificate key purpose %s", |
| 408 | gnutls_strerror(err)); |
| 409 | g_free(der.data); |
| 410 | abort(); |
| 411 | } |
| 412 | asn1_delete_structure(&ext); |
| 413 | g_free(der.data); |
| 414 | } |
| 415 | |
| 416 | /* |
| 417 | * Any old serial number will do, so lets pick 5 |
| 418 | */ |
| 419 | err = gnutls_x509_crt_set_serial(crt, serial, 5); |
| 420 | if (err < 0) { |
| 421 | g_critical("Failed to set certificate serial %s", |
| 422 | gnutls_strerror(err)); |
| 423 | abort(); |
| 424 | } |
| 425 | |
| 426 | err = gnutls_x509_crt_set_activation_time(crt, start); |
| 427 | if (err < 0) { |
| 428 | g_critical("Failed to set certificate activation %s", |
| 429 | gnutls_strerror(err)); |
| 430 | abort(); |
| 431 | } |
| 432 | err = gnutls_x509_crt_set_expiration_time(crt, expire); |
| 433 | if (err < 0) { |
| 434 | g_critical("Failed to set certificate expiration %s", |
| 435 | gnutls_strerror(err)); |
| 436 | abort(); |
| 437 | } |
| 438 | |
| 439 | |
| 440 | /* |
| 441 | * If no 'ca' is set then we are self signing |
| 442 | * the cert. This is done for the root CA certs |
| 443 | */ |
| 444 | err = gnutls_x509_crt_sign2(crt, ca ? ca : crt, privkey, |
| 445 | GNUTLS_DIG_SHA256, 0); |
| 446 | if (err < 0) { |
| 447 | g_critical("Failed to sign certificate %s", |
| 448 | gnutls_strerror(err)); |
| 449 | abort(); |
| 450 | } |
| 451 | |
| 452 | /* |
| 453 | * Finally write the new cert out to disk |
| 454 | */ |
| 455 | err = gnutls_x509_crt_export( |
| 456 | crt, GNUTLS_X509_FMT_PEM, buffer, &size); |
| 457 | if (err < 0) { |
| 458 | g_critical("Failed to export certificate %s: %d", |
| 459 | gnutls_strerror(err), err); |
| 460 | abort(); |
| 461 | } |
| 462 | |
| 463 | if (!g_file_set_contents(req->filename, buffer, -1, NULL)) { |
| 464 | g_critical("Failed to write certificate %s", |
| 465 | req->filename); |
| 466 | abort(); |
| 467 | } |
| 468 | |
| 469 | req->crt = crt; |
| 470 | } |
| 471 | |
| 472 | |
| 473 | void test_tls_write_cert_chain(const char *filename, |
| 474 | gnutls_x509_crt_t *certs, |
| 475 | size_t ncerts) |
| 476 | { |
| 477 | size_t i; |
| 478 | size_t capacity = 1024, offset = 0; |
| 479 | char *buffer = g_new0(char, capacity); |
| 480 | int err; |
| 481 | |
| 482 | for (i = 0; i < ncerts; i++) { |
| 483 | size_t len = capacity - offset; |
| 484 | retry: |
| 485 | err = gnutls_x509_crt_export(certs[i], GNUTLS_X509_FMT_PEM, |
| 486 | buffer + offset, &len); |
| 487 | if (err < 0) { |
| 488 | if (err == GNUTLS_E_SHORT_MEMORY_BUFFER) { |
| 489 | buffer = g_renew(char, buffer, offset + len); |
| 490 | capacity = offset + len; |
| 491 | goto retry; |
| 492 | } |
| 493 | g_critical("Failed to export certificate chain %s: %d", |
| 494 | gnutls_strerror(err), err); |
| 495 | abort(); |
| 496 | } |
| 497 | offset += len; |
| 498 | } |
| 499 | |
| 500 | if (!g_file_set_contents(filename, buffer, offset, NULL)) { |
| 501 | abort(); |
| 502 | } |
| 503 | g_free(buffer); |
| 504 | } |
| 505 | |
| 506 | void test_tls_deinit_cert(QCryptoTLSTestCertReq *req) |
| 507 | { |
| 508 | if (!req->crt) { |
| 509 | return; |
| 510 | } |
| 511 | |
| 512 | gnutls_x509_crt_deinit(req->crt); |
| 513 | req->crt = NULL; |
| 514 | } |
| 515 | |
| 516 | void test_tls_discard_cert(QCryptoTLSTestCertReq *req) |
| 517 | { |
| 518 | if (!req->crt) { |
| 519 | return; |
| 520 | } |
| 521 | |
| 522 | test_tls_deinit_cert(req); |
| 523 | |
| 524 | if (getenv("QEMU_TEST_DEBUG_CERTS") == NULL) { |
| 525 | unlink(req->filename); |
| 526 | } |
| 527 | } |