Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1 | /* |
| 2 | * SSL/TLS interface functions for GnuTLS |
Roshan Pius | 3a1667e | 2018-07-03 15:17:14 -0700 | [diff] [blame] | 3 | * Copyright (c) 2004-2017, Jouni Malinen <j@w1.fi> |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 4 | * |
Dmitry Shmidt | c5ec7f5 | 2012-03-06 16:33:24 -0800 | [diff] [blame] | 5 | * This software may be distributed under the terms of the BSD license. |
| 6 | * See README for more details. |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 7 | */ |
| 8 | |
| 9 | #include "includes.h" |
| 10 | #include <gnutls/gnutls.h> |
| 11 | #include <gnutls/x509.h> |
| 12 | #ifdef PKCS12_FUNCS |
| 13 | #include <gnutls/pkcs12.h> |
| 14 | #endif /* PKCS12_FUNCS */ |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 15 | #if GNUTLS_VERSION_NUMBER >= 0x030103 |
| 16 | #include <gnutls/ocsp.h> |
| 17 | #endif /* 3.1.3 */ |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 18 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 19 | #include "common.h" |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 20 | #include "crypto/crypto.h" |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 21 | #include "tls.h" |
| 22 | |
| 23 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 24 | static int tls_gnutls_ref_count = 0; |
| 25 | |
| 26 | struct tls_global { |
| 27 | /* Data for session resumption */ |
| 28 | void *session_data; |
| 29 | size_t session_data_size; |
| 30 | |
| 31 | int server; |
| 32 | |
| 33 | int params_set; |
| 34 | gnutls_certificate_credentials_t xcred; |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 35 | |
| 36 | void (*event_cb)(void *ctx, enum tls_event ev, |
| 37 | union tls_event_data *data); |
| 38 | void *cb_ctx; |
| 39 | int cert_in_cb; |
Dmitry Shmidt | d97138d | 2015-12-28 13:27:49 -0800 | [diff] [blame] | 40 | |
| 41 | char *ocsp_stapling_response; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 42 | }; |
| 43 | |
| 44 | struct tls_connection { |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 45 | struct tls_global *global; |
Dmitry Shmidt | 6c0da2b | 2015-01-05 13:08:17 -0800 | [diff] [blame] | 46 | gnutls_session_t session; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 47 | int read_alerts, write_alerts, failed; |
| 48 | |
| 49 | u8 *pre_shared_secret; |
| 50 | size_t pre_shared_secret_len; |
| 51 | int established; |
| 52 | int verify_peer; |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 53 | unsigned int disable_time_checks:1; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 54 | |
| 55 | struct wpabuf *push_buf; |
| 56 | struct wpabuf *pull_buf; |
| 57 | const u8 *pull_buf_offset; |
| 58 | |
| 59 | int params_set; |
| 60 | gnutls_certificate_credentials_t xcred; |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 61 | |
| 62 | char *suffix_match; |
Dmitry Shmidt | 2f74e36 | 2015-01-21 13:19:05 -0800 | [diff] [blame] | 63 | char *domain_match; |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 64 | unsigned int flags; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 65 | }; |
| 66 | |
| 67 | |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 68 | static int tls_connection_verify_peer(gnutls_session_t session); |
| 69 | |
| 70 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 71 | static void tls_log_func(int level, const char *msg) |
| 72 | { |
| 73 | char *s, *pos; |
| 74 | if (level == 6 || level == 7) { |
| 75 | /* These levels seem to be mostly I/O debug and msg dumps */ |
| 76 | return; |
| 77 | } |
| 78 | |
| 79 | s = os_strdup(msg); |
| 80 | if (s == NULL) |
| 81 | return; |
| 82 | |
| 83 | pos = s; |
| 84 | while (*pos != '\0') { |
| 85 | if (*pos == '\n') { |
| 86 | *pos = '\0'; |
| 87 | break; |
| 88 | } |
| 89 | pos++; |
| 90 | } |
| 91 | wpa_printf(level > 3 ? MSG_MSGDUMP : MSG_DEBUG, |
| 92 | "gnutls<%d> %s", level, s); |
| 93 | os_free(s); |
| 94 | } |
| 95 | |
| 96 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 97 | void * tls_init(const struct tls_config *conf) |
| 98 | { |
| 99 | struct tls_global *global; |
| 100 | |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 101 | if (tls_gnutls_ref_count == 0) { |
| 102 | wpa_printf(MSG_DEBUG, |
| 103 | "GnuTLS: Library version %s (runtime) - %s (build)", |
| 104 | gnutls_check_version(NULL), GNUTLS_VERSION); |
| 105 | } |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 106 | |
| 107 | global = os_zalloc(sizeof(*global)); |
| 108 | if (global == NULL) |
| 109 | return NULL; |
| 110 | |
| 111 | if (tls_gnutls_ref_count == 0 && gnutls_global_init() < 0) { |
| 112 | os_free(global); |
| 113 | return NULL; |
| 114 | } |
| 115 | tls_gnutls_ref_count++; |
| 116 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 117 | gnutls_global_set_log_function(tls_log_func); |
| 118 | if (wpa_debug_show_keys) |
| 119 | gnutls_global_set_log_level(11); |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 120 | |
| 121 | if (conf) { |
| 122 | global->event_cb = conf->event_cb; |
| 123 | global->cb_ctx = conf->cb_ctx; |
| 124 | global->cert_in_cb = conf->cert_in_cb; |
| 125 | } |
| 126 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 127 | return global; |
| 128 | } |
| 129 | |
| 130 | |
| 131 | void tls_deinit(void *ssl_ctx) |
| 132 | { |
| 133 | struct tls_global *global = ssl_ctx; |
| 134 | if (global) { |
| 135 | if (global->params_set) |
| 136 | gnutls_certificate_free_credentials(global->xcred); |
| 137 | os_free(global->session_data); |
Dmitry Shmidt | d97138d | 2015-12-28 13:27:49 -0800 | [diff] [blame] | 138 | os_free(global->ocsp_stapling_response); |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 139 | os_free(global); |
| 140 | } |
| 141 | |
| 142 | tls_gnutls_ref_count--; |
| 143 | if (tls_gnutls_ref_count == 0) |
| 144 | gnutls_global_deinit(); |
| 145 | } |
| 146 | |
| 147 | |
| 148 | int tls_get_errors(void *ssl_ctx) |
| 149 | { |
| 150 | return 0; |
| 151 | } |
| 152 | |
| 153 | |
Dmitry Shmidt | 6c0da2b | 2015-01-05 13:08:17 -0800 | [diff] [blame] | 154 | static ssize_t tls_pull_func(gnutls_transport_ptr_t ptr, void *buf, |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 155 | size_t len) |
| 156 | { |
| 157 | struct tls_connection *conn = (struct tls_connection *) ptr; |
| 158 | const u8 *end; |
| 159 | if (conn->pull_buf == NULL) { |
| 160 | errno = EWOULDBLOCK; |
| 161 | return -1; |
| 162 | } |
| 163 | |
| 164 | end = wpabuf_head_u8(conn->pull_buf) + wpabuf_len(conn->pull_buf); |
| 165 | if ((size_t) (end - conn->pull_buf_offset) < len) |
| 166 | len = end - conn->pull_buf_offset; |
| 167 | os_memcpy(buf, conn->pull_buf_offset, len); |
| 168 | conn->pull_buf_offset += len; |
| 169 | if (conn->pull_buf_offset == end) { |
| 170 | wpa_printf(MSG_DEBUG, "%s - pull_buf consumed", __func__); |
| 171 | wpabuf_free(conn->pull_buf); |
| 172 | conn->pull_buf = NULL; |
| 173 | conn->pull_buf_offset = NULL; |
| 174 | } else { |
| 175 | wpa_printf(MSG_DEBUG, "%s - %lu bytes remaining in pull_buf", |
| 176 | __func__, |
| 177 | (unsigned long) (end - conn->pull_buf_offset)); |
| 178 | } |
| 179 | return len; |
| 180 | } |
| 181 | |
| 182 | |
Dmitry Shmidt | 6c0da2b | 2015-01-05 13:08:17 -0800 | [diff] [blame] | 183 | static ssize_t tls_push_func(gnutls_transport_ptr_t ptr, const void *buf, |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 184 | size_t len) |
| 185 | { |
| 186 | struct tls_connection *conn = (struct tls_connection *) ptr; |
| 187 | |
| 188 | if (wpabuf_resize(&conn->push_buf, len) < 0) { |
| 189 | errno = ENOMEM; |
| 190 | return -1; |
| 191 | } |
| 192 | wpabuf_put_data(conn->push_buf, buf, len); |
| 193 | |
| 194 | return len; |
| 195 | } |
| 196 | |
| 197 | |
| 198 | static int tls_gnutls_init_session(struct tls_global *global, |
| 199 | struct tls_connection *conn) |
| 200 | { |
Dmitry Shmidt | 1f69aa5 | 2012-01-24 16:10:04 -0800 | [diff] [blame] | 201 | const char *err; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 202 | int ret; |
| 203 | |
| 204 | ret = gnutls_init(&conn->session, |
| 205 | global->server ? GNUTLS_SERVER : GNUTLS_CLIENT); |
| 206 | if (ret < 0) { |
| 207 | wpa_printf(MSG_INFO, "TLS: Failed to initialize new TLS " |
| 208 | "connection: %s", gnutls_strerror(ret)); |
| 209 | return -1; |
| 210 | } |
| 211 | |
| 212 | ret = gnutls_set_default_priority(conn->session); |
| 213 | if (ret < 0) |
| 214 | goto fail; |
| 215 | |
Dmitry Shmidt | 1f69aa5 | 2012-01-24 16:10:04 -0800 | [diff] [blame] | 216 | ret = gnutls_priority_set_direct(conn->session, "NORMAL:-VERS-SSL3.0", |
| 217 | &err); |
| 218 | if (ret < 0) { |
| 219 | wpa_printf(MSG_ERROR, "GnuTLS: Priority string failure at " |
| 220 | "'%s'", err); |
| 221 | goto fail; |
| 222 | } |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 223 | |
| 224 | gnutls_transport_set_pull_function(conn->session, tls_pull_func); |
| 225 | gnutls_transport_set_push_function(conn->session, tls_push_func); |
Dmitry Shmidt | 6c0da2b | 2015-01-05 13:08:17 -0800 | [diff] [blame] | 226 | gnutls_transport_set_ptr(conn->session, (gnutls_transport_ptr_t) conn); |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 227 | gnutls_session_set_ptr(conn->session, conn); |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 228 | |
| 229 | return 0; |
| 230 | |
| 231 | fail: |
| 232 | wpa_printf(MSG_INFO, "TLS: Failed to setup new TLS connection: %s", |
| 233 | gnutls_strerror(ret)); |
| 234 | gnutls_deinit(conn->session); |
| 235 | return -1; |
| 236 | } |
| 237 | |
| 238 | |
| 239 | struct tls_connection * tls_connection_init(void *ssl_ctx) |
| 240 | { |
| 241 | struct tls_global *global = ssl_ctx; |
| 242 | struct tls_connection *conn; |
| 243 | int ret; |
| 244 | |
| 245 | conn = os_zalloc(sizeof(*conn)); |
| 246 | if (conn == NULL) |
| 247 | return NULL; |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 248 | conn->global = global; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 249 | |
| 250 | if (tls_gnutls_init_session(global, conn)) { |
| 251 | os_free(conn); |
| 252 | return NULL; |
| 253 | } |
| 254 | |
| 255 | if (global->params_set) { |
| 256 | ret = gnutls_credentials_set(conn->session, |
| 257 | GNUTLS_CRD_CERTIFICATE, |
| 258 | global->xcred); |
| 259 | if (ret < 0) { |
| 260 | wpa_printf(MSG_INFO, "Failed to configure " |
| 261 | "credentials: %s", gnutls_strerror(ret)); |
| 262 | os_free(conn); |
| 263 | return NULL; |
| 264 | } |
| 265 | } |
| 266 | |
| 267 | if (gnutls_certificate_allocate_credentials(&conn->xcred)) { |
| 268 | os_free(conn); |
| 269 | return NULL; |
| 270 | } |
| 271 | |
| 272 | return conn; |
| 273 | } |
| 274 | |
| 275 | |
| 276 | void tls_connection_deinit(void *ssl_ctx, struct tls_connection *conn) |
| 277 | { |
| 278 | if (conn == NULL) |
| 279 | return; |
| 280 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 281 | gnutls_certificate_free_credentials(conn->xcred); |
| 282 | gnutls_deinit(conn->session); |
| 283 | os_free(conn->pre_shared_secret); |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 284 | wpabuf_free(conn->push_buf); |
| 285 | wpabuf_free(conn->pull_buf); |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 286 | os_free(conn->suffix_match); |
Dmitry Shmidt | 2f74e36 | 2015-01-21 13:19:05 -0800 | [diff] [blame] | 287 | os_free(conn->domain_match); |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 288 | os_free(conn); |
| 289 | } |
| 290 | |
| 291 | |
| 292 | int tls_connection_established(void *ssl_ctx, struct tls_connection *conn) |
| 293 | { |
| 294 | return conn ? conn->established : 0; |
| 295 | } |
| 296 | |
| 297 | |
Hai Shalom | 39ba6fc | 2019-01-22 12:40:38 -0800 | [diff] [blame] | 298 | char * tls_connection_peer_serial_num(void *tls_ctx, |
| 299 | struct tls_connection *conn) |
| 300 | { |
| 301 | /* TODO */ |
| 302 | return NULL; |
| 303 | } |
| 304 | |
| 305 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 306 | int tls_connection_shutdown(void *ssl_ctx, struct tls_connection *conn) |
| 307 | { |
| 308 | struct tls_global *global = ssl_ctx; |
| 309 | int ret; |
| 310 | |
| 311 | if (conn == NULL) |
| 312 | return -1; |
| 313 | |
| 314 | /* Shutdown previous TLS connection without notifying the peer |
| 315 | * because the connection was already terminated in practice |
| 316 | * and "close notify" shutdown alert would confuse AS. */ |
| 317 | gnutls_bye(conn->session, GNUTLS_SHUT_RDWR); |
| 318 | wpabuf_free(conn->push_buf); |
| 319 | conn->push_buf = NULL; |
| 320 | conn->established = 0; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 321 | |
| 322 | gnutls_deinit(conn->session); |
| 323 | if (tls_gnutls_init_session(global, conn)) { |
| 324 | wpa_printf(MSG_INFO, "GnuTLS: Failed to preparare new session " |
| 325 | "for session resumption use"); |
| 326 | return -1; |
| 327 | } |
| 328 | |
| 329 | ret = gnutls_credentials_set(conn->session, GNUTLS_CRD_CERTIFICATE, |
| 330 | conn->params_set ? conn->xcred : |
| 331 | global->xcred); |
| 332 | if (ret < 0) { |
| 333 | wpa_printf(MSG_INFO, "GnuTLS: Failed to configure credentials " |
| 334 | "for session resumption: %s", gnutls_strerror(ret)); |
| 335 | return -1; |
| 336 | } |
| 337 | |
| 338 | if (global->session_data) { |
| 339 | ret = gnutls_session_set_data(conn->session, |
| 340 | global->session_data, |
| 341 | global->session_data_size); |
| 342 | if (ret < 0) { |
| 343 | wpa_printf(MSG_INFO, "GnuTLS: Failed to set session " |
| 344 | "data: %s", gnutls_strerror(ret)); |
| 345 | return -1; |
| 346 | } |
| 347 | } |
| 348 | |
| 349 | return 0; |
| 350 | } |
| 351 | |
| 352 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 353 | int tls_connection_set_params(void *tls_ctx, struct tls_connection *conn, |
| 354 | const struct tls_connection_params *params) |
| 355 | { |
| 356 | int ret; |
Roshan Pius | 3a1667e | 2018-07-03 15:17:14 -0700 | [diff] [blame] | 357 | const char *err; |
| 358 | char prio_buf[100]; |
| 359 | const char *prio = NULL; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 360 | |
| 361 | if (conn == NULL || params == NULL) |
| 362 | return -1; |
| 363 | |
Dmitry Shmidt | d97138d | 2015-12-28 13:27:49 -0800 | [diff] [blame] | 364 | if (params->flags & TLS_CONN_REQUIRE_OCSP_ALL) { |
| 365 | wpa_printf(MSG_INFO, |
| 366 | "GnuTLS: ocsp=3 not supported"); |
| 367 | return -1; |
| 368 | } |
| 369 | |
Dmitry Shmidt | 1b46775 | 2015-12-14 12:45:46 -0800 | [diff] [blame] | 370 | if (params->flags & TLS_CONN_EXT_CERT_CHECK) { |
| 371 | wpa_printf(MSG_INFO, |
| 372 | "GnuTLS: tls_ext_cert_check=1 not supported"); |
| 373 | return -1; |
| 374 | } |
| 375 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 376 | if (params->subject_match) { |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 377 | wpa_printf(MSG_INFO, "GnuTLS: subject_match not supported"); |
| 378 | return -1; |
| 379 | } |
| 380 | |
| 381 | if (params->altsubject_match) { |
| 382 | wpa_printf(MSG_INFO, "GnuTLS: altsubject_match not supported"); |
| 383 | return -1; |
| 384 | } |
| 385 | |
| 386 | os_free(conn->suffix_match); |
| 387 | conn->suffix_match = NULL; |
| 388 | if (params->suffix_match) { |
| 389 | conn->suffix_match = os_strdup(params->suffix_match); |
| 390 | if (conn->suffix_match == NULL) |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 391 | return -1; |
| 392 | } |
| 393 | |
Dmitry Shmidt | 2f74e36 | 2015-01-21 13:19:05 -0800 | [diff] [blame] | 394 | #if GNUTLS_VERSION_NUMBER >= 0x030300 |
| 395 | os_free(conn->domain_match); |
| 396 | conn->domain_match = NULL; |
| 397 | if (params->domain_match) { |
| 398 | conn->domain_match = os_strdup(params->domain_match); |
| 399 | if (conn->domain_match == NULL) |
| 400 | return -1; |
| 401 | } |
| 402 | #else /* < 3.3.0 */ |
| 403 | if (params->domain_match) { |
| 404 | wpa_printf(MSG_INFO, "GnuTLS: domain_match not supported"); |
| 405 | return -1; |
| 406 | } |
| 407 | #endif /* >= 3.3.0 */ |
| 408 | |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 409 | conn->flags = params->flags; |
| 410 | |
Roshan Pius | 3a1667e | 2018-07-03 15:17:14 -0700 | [diff] [blame] | 411 | if (params->flags & (TLS_CONN_DISABLE_TLSv1_0 | |
| 412 | TLS_CONN_DISABLE_TLSv1_1 | |
| 413 | TLS_CONN_DISABLE_TLSv1_2)) { |
| 414 | os_snprintf(prio_buf, sizeof(prio_buf), |
| 415 | "NORMAL:-VERS-SSL3.0%s%s%s", |
| 416 | params->flags & TLS_CONN_DISABLE_TLSv1_0 ? |
| 417 | ":-VERS-TLS1.0" : "", |
| 418 | params->flags & TLS_CONN_DISABLE_TLSv1_1 ? |
| 419 | ":-VERS-TLS1.1" : "", |
| 420 | params->flags & TLS_CONN_DISABLE_TLSv1_2 ? |
| 421 | ":-VERS-TLS1.2" : ""); |
| 422 | prio = prio_buf; |
| 423 | } |
| 424 | |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 425 | if (params->openssl_ciphers) { |
Roshan Pius | 3a1667e | 2018-07-03 15:17:14 -0700 | [diff] [blame] | 426 | if (os_strcmp(params->openssl_ciphers, "SUITEB128") == 0) { |
| 427 | prio = "SUITEB128"; |
| 428 | } else if (os_strcmp(params->openssl_ciphers, |
| 429 | "SUITEB192") == 0) { |
| 430 | prio = "SUITEB192"; |
| 431 | } else if ((params->flags & TLS_CONN_SUITEB) && |
| 432 | os_strcmp(params->openssl_ciphers, |
| 433 | "ECDHE-RSA-AES256-GCM-SHA384") == 0) { |
| 434 | prio = "NONE:+VERS-TLS1.2:+AEAD:+ECDHE-RSA:+AES-256-GCM:+SIGN-RSA-SHA384:+CURVE-SECP384R1:+COMP-NULL"; |
| 435 | } else if (os_strcmp(params->openssl_ciphers, |
| 436 | "ECDHE-RSA-AES256-GCM-SHA384") == 0) { |
| 437 | prio = "NONE:+VERS-TLS1.2:+AEAD:+ECDHE-RSA:+AES-256-GCM:+SIGN-RSA-SHA384:+CURVE-SECP384R1:+COMP-NULL"; |
| 438 | } else if (os_strcmp(params->openssl_ciphers, |
| 439 | "DHE-RSA-AES256-GCM-SHA384") == 0) { |
| 440 | prio = "NONE:+VERS-TLS1.2:+AEAD:+DHE-RSA:+AES-256-GCM:+SIGN-RSA-SHA384:+CURVE-SECP384R1:+COMP-NULL:%PROFILE_HIGH"; |
| 441 | } else if (os_strcmp(params->openssl_ciphers, |
| 442 | "ECDHE-ECDSA-AES256-GCM-SHA384") == 0) { |
| 443 | prio = "NONE:+VERS-TLS1.2:+AEAD:+ECDHE-ECDSA:+AES-256-GCM:+SIGN-RSA-SHA384:+CURVE-SECP384R1:+COMP-NULL"; |
| 444 | } else { |
| 445 | wpa_printf(MSG_INFO, |
| 446 | "GnuTLS: openssl_ciphers not supported"); |
| 447 | return -1; |
| 448 | } |
| 449 | } else if (params->flags & TLS_CONN_SUITEB) { |
| 450 | prio = "NONE:+VERS-TLS1.2:+AEAD:+ECDHE-ECDSA:+ECDHE-RSA:+DHE-RSA:+AES-256-GCM:+SIGN-RSA-SHA384:+CURVE-SECP384R1:+COMP-NULL:%PROFILE_HIGH"; |
| 451 | } |
| 452 | |
| 453 | if (prio) { |
| 454 | wpa_printf(MSG_DEBUG, "GnuTLS: Set priority string: %s", prio); |
| 455 | ret = gnutls_priority_set_direct(conn->session, prio, &err); |
| 456 | if (ret < 0) { |
| 457 | wpa_printf(MSG_ERROR, |
| 458 | "GnuTLS: Priority string failure at '%s'", |
| 459 | err); |
| 460 | return -1; |
| 461 | } |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 462 | } |
| 463 | |
Hai Shalom | 74f70d4 | 2019-02-11 14:42:39 -0800 | [diff] [blame] | 464 | if (params->openssl_ecdh_curves) { |
| 465 | wpa_printf(MSG_INFO, |
| 466 | "GnuTLS: openssl_ecdh_curves not supported"); |
| 467 | return -1; |
| 468 | } |
| 469 | |
Dmitry Shmidt | 2933359 | 2017-01-09 12:27:11 -0800 | [diff] [blame] | 470 | /* TODO: gnutls_certificate_set_verify_flags(xcred, flags); |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 471 | * to force peer validation(?) */ |
| 472 | |
| 473 | if (params->ca_cert) { |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 474 | wpa_printf(MSG_DEBUG, "GnuTLS: Try to parse %s in DER format", |
| 475 | params->ca_cert); |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 476 | ret = gnutls_certificate_set_x509_trust_file( |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 477 | conn->xcred, params->ca_cert, GNUTLS_X509_FMT_DER); |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 478 | if (ret < 0) { |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 479 | wpa_printf(MSG_DEBUG, |
| 480 | "GnuTLS: Failed to read CA cert '%s' in DER format (%s) - try in PEM format", |
| 481 | params->ca_cert, |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 482 | gnutls_strerror(ret)); |
| 483 | ret = gnutls_certificate_set_x509_trust_file( |
| 484 | conn->xcred, params->ca_cert, |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 485 | GNUTLS_X509_FMT_PEM); |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 486 | if (ret < 0) { |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 487 | wpa_printf(MSG_DEBUG, |
| 488 | "Failed to read CA cert '%s' in PEM format: %s", |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 489 | params->ca_cert, |
| 490 | gnutls_strerror(ret)); |
| 491 | return -1; |
| 492 | } |
Roshan Pius | 3a1667e | 2018-07-03 15:17:14 -0700 | [diff] [blame] | 493 | wpa_printf(MSG_DEBUG, |
| 494 | "GnuTLS: Successfully read CA cert '%s' in PEM format", |
| 495 | params->ca_cert); |
| 496 | } else { |
| 497 | wpa_printf(MSG_DEBUG, |
| 498 | "GnuTLS: Successfully read CA cert '%s' in DER format", |
| 499 | params->ca_cert); |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 500 | } |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 501 | } else if (params->ca_cert_blob) { |
| 502 | gnutls_datum_t ca; |
| 503 | |
| 504 | ca.data = (unsigned char *) params->ca_cert_blob; |
| 505 | ca.size = params->ca_cert_blob_len; |
| 506 | |
| 507 | ret = gnutls_certificate_set_x509_trust_mem( |
| 508 | conn->xcred, &ca, GNUTLS_X509_FMT_DER); |
| 509 | if (ret < 0) { |
| 510 | wpa_printf(MSG_DEBUG, |
| 511 | "Failed to parse CA cert in DER format: %s", |
| 512 | gnutls_strerror(ret)); |
| 513 | ret = gnutls_certificate_set_x509_trust_mem( |
| 514 | conn->xcred, &ca, GNUTLS_X509_FMT_PEM); |
| 515 | if (ret < 0) { |
| 516 | wpa_printf(MSG_DEBUG, |
| 517 | "Failed to parse CA cert in PEM format: %s", |
| 518 | gnutls_strerror(ret)); |
| 519 | return -1; |
| 520 | } |
| 521 | } |
| 522 | } else if (params->ca_path) { |
| 523 | wpa_printf(MSG_INFO, "GnuTLS: ca_path not supported"); |
| 524 | return -1; |
| 525 | } |
| 526 | |
| 527 | conn->disable_time_checks = 0; |
| 528 | if (params->ca_cert || params->ca_cert_blob) { |
| 529 | conn->verify_peer = 1; |
| 530 | gnutls_certificate_set_verify_function( |
| 531 | conn->xcred, tls_connection_verify_peer); |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 532 | |
| 533 | if (params->flags & TLS_CONN_ALLOW_SIGN_RSA_MD5) { |
| 534 | gnutls_certificate_set_verify_flags( |
| 535 | conn->xcred, GNUTLS_VERIFY_ALLOW_SIGN_RSA_MD5); |
| 536 | } |
| 537 | |
| 538 | if (params->flags & TLS_CONN_DISABLE_TIME_CHECKS) { |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 539 | conn->disable_time_checks = 1; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 540 | gnutls_certificate_set_verify_flags( |
| 541 | conn->xcred, |
| 542 | GNUTLS_VERIFY_DISABLE_TIME_CHECKS); |
| 543 | } |
| 544 | } |
| 545 | |
| 546 | if (params->client_cert && params->private_key) { |
Roshan Pius | 3a1667e | 2018-07-03 15:17:14 -0700 | [diff] [blame] | 547 | wpa_printf(MSG_DEBUG, |
| 548 | "GnuTLS: Try to parse client cert '%s' and key '%s' in DER format", |
| 549 | params->client_cert, params->private_key); |
Dmitry Shmidt | 6c0da2b | 2015-01-05 13:08:17 -0800 | [diff] [blame] | 550 | #if GNUTLS_VERSION_NUMBER >= 0x03010b |
| 551 | ret = gnutls_certificate_set_x509_key_file2( |
| 552 | conn->xcred, params->client_cert, params->private_key, |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 553 | GNUTLS_X509_FMT_DER, params->private_key_passwd, 0); |
Dmitry Shmidt | 6c0da2b | 2015-01-05 13:08:17 -0800 | [diff] [blame] | 554 | #else |
| 555 | /* private_key_passwd not (easily) supported here */ |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 556 | ret = gnutls_certificate_set_x509_key_file( |
| 557 | conn->xcred, params->client_cert, params->private_key, |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 558 | GNUTLS_X509_FMT_DER); |
Dmitry Shmidt | 6c0da2b | 2015-01-05 13:08:17 -0800 | [diff] [blame] | 559 | #endif |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 560 | if (ret < 0) { |
Roshan Pius | 3a1667e | 2018-07-03 15:17:14 -0700 | [diff] [blame] | 561 | wpa_printf(MSG_DEBUG, |
| 562 | "GnuTLS: Failed to read client cert/key in DER format (%s) - try in PEM format", |
| 563 | gnutls_strerror(ret)); |
Dmitry Shmidt | 6c0da2b | 2015-01-05 13:08:17 -0800 | [diff] [blame] | 564 | #if GNUTLS_VERSION_NUMBER >= 0x03010b |
| 565 | ret = gnutls_certificate_set_x509_key_file2( |
| 566 | conn->xcred, params->client_cert, |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 567 | params->private_key, GNUTLS_X509_FMT_PEM, |
Dmitry Shmidt | 6c0da2b | 2015-01-05 13:08:17 -0800 | [diff] [blame] | 568 | params->private_key_passwd, 0); |
| 569 | #else |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 570 | ret = gnutls_certificate_set_x509_key_file( |
| 571 | conn->xcred, params->client_cert, |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 572 | params->private_key, GNUTLS_X509_FMT_PEM); |
Dmitry Shmidt | 6c0da2b | 2015-01-05 13:08:17 -0800 | [diff] [blame] | 573 | #endif |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 574 | if (ret < 0) { |
| 575 | wpa_printf(MSG_DEBUG, "Failed to read client " |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 576 | "cert/key in PEM format: %s", |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 577 | gnutls_strerror(ret)); |
| 578 | return ret; |
| 579 | } |
Roshan Pius | 3a1667e | 2018-07-03 15:17:14 -0700 | [diff] [blame] | 580 | wpa_printf(MSG_DEBUG, |
| 581 | "GnuTLS: Successfully read client cert/key in PEM format"); |
| 582 | } else { |
| 583 | wpa_printf(MSG_DEBUG, |
| 584 | "GnuTLS: Successfully read client cert/key in DER format"); |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 585 | } |
| 586 | } else if (params->private_key) { |
| 587 | int pkcs12_ok = 0; |
| 588 | #ifdef PKCS12_FUNCS |
| 589 | /* Try to load in PKCS#12 format */ |
Roshan Pius | 3a1667e | 2018-07-03 15:17:14 -0700 | [diff] [blame] | 590 | wpa_printf(MSG_DEBUG, |
| 591 | "GnuTLS: Try to parse client cert/key '%s'in PKCS#12 DER format", |
| 592 | params->private_key); |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 593 | ret = gnutls_certificate_set_x509_simple_pkcs12_file( |
| 594 | conn->xcred, params->private_key, GNUTLS_X509_FMT_DER, |
| 595 | params->private_key_passwd); |
| 596 | if (ret != 0) { |
| 597 | wpa_printf(MSG_DEBUG, "Failed to load private_key in " |
| 598 | "PKCS#12 format: %s", gnutls_strerror(ret)); |
| 599 | return -1; |
| 600 | } else |
| 601 | pkcs12_ok = 1; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 602 | #endif /* PKCS12_FUNCS */ |
| 603 | |
| 604 | if (!pkcs12_ok) { |
| 605 | wpa_printf(MSG_DEBUG, "GnuTLS: PKCS#12 support not " |
| 606 | "included"); |
| 607 | return -1; |
| 608 | } |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 609 | } else if (params->client_cert_blob && params->private_key_blob) { |
| 610 | gnutls_datum_t cert, key; |
| 611 | |
| 612 | cert.data = (unsigned char *) params->client_cert_blob; |
| 613 | cert.size = params->client_cert_blob_len; |
| 614 | key.data = (unsigned char *) params->private_key_blob; |
| 615 | key.size = params->private_key_blob_len; |
| 616 | |
| 617 | #if GNUTLS_VERSION_NUMBER >= 0x03010b |
| 618 | ret = gnutls_certificate_set_x509_key_mem2( |
| 619 | conn->xcred, &cert, &key, GNUTLS_X509_FMT_DER, |
| 620 | params->private_key_passwd, 0); |
| 621 | #else |
| 622 | /* private_key_passwd not (easily) supported here */ |
| 623 | ret = gnutls_certificate_set_x509_key_mem( |
| 624 | conn->xcred, &cert, &key, GNUTLS_X509_FMT_DER); |
| 625 | #endif |
| 626 | if (ret < 0) { |
| 627 | wpa_printf(MSG_DEBUG, "Failed to read client cert/key " |
| 628 | "in DER format: %s", gnutls_strerror(ret)); |
| 629 | #if GNUTLS_VERSION_NUMBER >= 0x03010b |
| 630 | ret = gnutls_certificate_set_x509_key_mem2( |
| 631 | conn->xcred, &cert, &key, GNUTLS_X509_FMT_PEM, |
| 632 | params->private_key_passwd, 0); |
| 633 | #else |
| 634 | /* private_key_passwd not (easily) supported here */ |
| 635 | ret = gnutls_certificate_set_x509_key_mem( |
| 636 | conn->xcred, &cert, &key, GNUTLS_X509_FMT_PEM); |
| 637 | #endif |
| 638 | if (ret < 0) { |
| 639 | wpa_printf(MSG_DEBUG, "Failed to read client " |
| 640 | "cert/key in PEM format: %s", |
| 641 | gnutls_strerror(ret)); |
| 642 | return ret; |
| 643 | } |
| 644 | } |
| 645 | } else if (params->private_key_blob) { |
| 646 | #ifdef PKCS12_FUNCS |
| 647 | gnutls_datum_t key; |
| 648 | |
| 649 | key.data = (unsigned char *) params->private_key_blob; |
| 650 | key.size = params->private_key_blob_len; |
| 651 | |
| 652 | /* Try to load in PKCS#12 format */ |
| 653 | ret = gnutls_certificate_set_x509_simple_pkcs12_mem( |
| 654 | conn->xcred, &key, GNUTLS_X509_FMT_DER, |
| 655 | params->private_key_passwd); |
| 656 | if (ret != 0) { |
| 657 | wpa_printf(MSG_DEBUG, "Failed to load private_key in " |
| 658 | "PKCS#12 format: %s", gnutls_strerror(ret)); |
| 659 | return -1; |
| 660 | } |
| 661 | #else /* PKCS12_FUNCS */ |
| 662 | wpa_printf(MSG_DEBUG, "GnuTLS: PKCS#12 support not included"); |
| 663 | return -1; |
| 664 | #endif /* PKCS12_FUNCS */ |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 665 | } |
| 666 | |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 667 | #if GNUTLS_VERSION_NUMBER >= 0x030103 |
| 668 | if (params->flags & (TLS_CONN_REQUEST_OCSP | TLS_CONN_REQUIRE_OCSP)) { |
| 669 | ret = gnutls_ocsp_status_request_enable_client(conn->session, |
| 670 | NULL, 0, NULL); |
| 671 | if (ret != GNUTLS_E_SUCCESS) { |
| 672 | wpa_printf(MSG_INFO, |
| 673 | "GnuTLS: Failed to enable OCSP client"); |
| 674 | return -1; |
| 675 | } |
| 676 | } |
| 677 | #else /* 3.1.3 */ |
| 678 | if (params->flags & TLS_CONN_REQUIRE_OCSP) { |
| 679 | wpa_printf(MSG_INFO, |
| 680 | "GnuTLS: OCSP not supported by this version of GnuTLS"); |
| 681 | return -1; |
| 682 | } |
| 683 | #endif /* 3.1.3 */ |
| 684 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 685 | conn->params_set = 1; |
| 686 | |
| 687 | ret = gnutls_credentials_set(conn->session, GNUTLS_CRD_CERTIFICATE, |
| 688 | conn->xcred); |
| 689 | if (ret < 0) { |
| 690 | wpa_printf(MSG_INFO, "Failed to configure credentials: %s", |
| 691 | gnutls_strerror(ret)); |
| 692 | } |
| 693 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 694 | return ret; |
| 695 | } |
| 696 | |
| 697 | |
Dmitry Shmidt | d97138d | 2015-12-28 13:27:49 -0800 | [diff] [blame] | 698 | #if GNUTLS_VERSION_NUMBER >= 0x030103 |
| 699 | static int server_ocsp_status_req(gnutls_session_t session, void *ptr, |
| 700 | gnutls_datum_t *resp) |
| 701 | { |
| 702 | struct tls_global *global = ptr; |
| 703 | char *cached; |
| 704 | size_t len; |
| 705 | |
| 706 | if (!global->ocsp_stapling_response) { |
| 707 | wpa_printf(MSG_DEBUG, "GnuTLS: OCSP status callback - no response configured"); |
| 708 | return GNUTLS_E_NO_CERTIFICATE_STATUS; |
| 709 | } |
| 710 | |
| 711 | cached = os_readfile(global->ocsp_stapling_response, &len); |
| 712 | if (!cached) { |
| 713 | wpa_printf(MSG_DEBUG, |
| 714 | "GnuTLS: OCSP status callback - could not read response file (%s)", |
| 715 | global->ocsp_stapling_response); |
| 716 | return GNUTLS_E_NO_CERTIFICATE_STATUS; |
| 717 | } |
| 718 | |
| 719 | wpa_printf(MSG_DEBUG, |
| 720 | "GnuTLS: OCSP status callback - send cached response"); |
| 721 | resp->data = gnutls_malloc(len); |
| 722 | if (!resp->data) { |
| 723 | os_free(resp); |
| 724 | return GNUTLS_E_MEMORY_ERROR; |
| 725 | } |
| 726 | |
| 727 | os_memcpy(resp->data, cached, len); |
| 728 | resp->size = len; |
| 729 | os_free(cached); |
| 730 | |
| 731 | return GNUTLS_E_SUCCESS; |
| 732 | } |
| 733 | #endif /* 3.1.3 */ |
| 734 | |
| 735 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 736 | int tls_global_set_params(void *tls_ctx, |
| 737 | const struct tls_connection_params *params) |
| 738 | { |
| 739 | struct tls_global *global = tls_ctx; |
| 740 | int ret; |
| 741 | |
Hai Shalom | 021b0b5 | 2019-04-10 11:17:58 -0700 | [diff] [blame] | 742 | if (params->check_cert_subject) |
| 743 | return -1; /* not yet supported */ |
| 744 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 745 | /* Currently, global parameters are only set when running in server |
| 746 | * mode. */ |
| 747 | global->server = 1; |
| 748 | |
| 749 | if (global->params_set) { |
| 750 | gnutls_certificate_free_credentials(global->xcred); |
| 751 | global->params_set = 0; |
| 752 | } |
| 753 | |
| 754 | ret = gnutls_certificate_allocate_credentials(&global->xcred); |
| 755 | if (ret) { |
| 756 | wpa_printf(MSG_DEBUG, "Failed to allocate global credentials " |
| 757 | "%s", gnutls_strerror(ret)); |
| 758 | return -1; |
| 759 | } |
| 760 | |
| 761 | if (params->ca_cert) { |
| 762 | ret = gnutls_certificate_set_x509_trust_file( |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 763 | global->xcred, params->ca_cert, GNUTLS_X509_FMT_DER); |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 764 | if (ret < 0) { |
| 765 | wpa_printf(MSG_DEBUG, "Failed to read CA cert '%s' " |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 766 | "in DER format: %s", params->ca_cert, |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 767 | gnutls_strerror(ret)); |
| 768 | ret = gnutls_certificate_set_x509_trust_file( |
| 769 | global->xcred, params->ca_cert, |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 770 | GNUTLS_X509_FMT_PEM); |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 771 | if (ret < 0) { |
| 772 | wpa_printf(MSG_DEBUG, "Failed to read CA cert " |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 773 | "'%s' in PEM format: %s", |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 774 | params->ca_cert, |
| 775 | gnutls_strerror(ret)); |
| 776 | goto fail; |
| 777 | } |
| 778 | } |
| 779 | |
| 780 | if (params->flags & TLS_CONN_ALLOW_SIGN_RSA_MD5) { |
| 781 | gnutls_certificate_set_verify_flags( |
| 782 | global->xcred, |
| 783 | GNUTLS_VERIFY_ALLOW_SIGN_RSA_MD5); |
| 784 | } |
| 785 | |
| 786 | if (params->flags & TLS_CONN_DISABLE_TIME_CHECKS) { |
| 787 | gnutls_certificate_set_verify_flags( |
| 788 | global->xcred, |
| 789 | GNUTLS_VERIFY_DISABLE_TIME_CHECKS); |
| 790 | } |
| 791 | } |
| 792 | |
| 793 | if (params->client_cert && params->private_key) { |
| 794 | /* TODO: private_key_passwd? */ |
| 795 | ret = gnutls_certificate_set_x509_key_file( |
| 796 | global->xcred, params->client_cert, |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 797 | params->private_key, GNUTLS_X509_FMT_DER); |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 798 | if (ret < 0) { |
| 799 | wpa_printf(MSG_DEBUG, "Failed to read client cert/key " |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 800 | "in DER format: %s", gnutls_strerror(ret)); |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 801 | ret = gnutls_certificate_set_x509_key_file( |
| 802 | global->xcred, params->client_cert, |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 803 | params->private_key, GNUTLS_X509_FMT_PEM); |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 804 | if (ret < 0) { |
| 805 | wpa_printf(MSG_DEBUG, "Failed to read client " |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 806 | "cert/key in PEM format: %s", |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 807 | gnutls_strerror(ret)); |
| 808 | goto fail; |
| 809 | } |
| 810 | } |
| 811 | } else if (params->private_key) { |
| 812 | int pkcs12_ok = 0; |
| 813 | #ifdef PKCS12_FUNCS |
| 814 | /* Try to load in PKCS#12 format */ |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 815 | ret = gnutls_certificate_set_x509_simple_pkcs12_file( |
| 816 | global->xcred, params->private_key, |
| 817 | GNUTLS_X509_FMT_DER, params->private_key_passwd); |
| 818 | if (ret != 0) { |
| 819 | wpa_printf(MSG_DEBUG, "Failed to load private_key in " |
| 820 | "PKCS#12 format: %s", gnutls_strerror(ret)); |
| 821 | goto fail; |
| 822 | } else |
| 823 | pkcs12_ok = 1; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 824 | #endif /* PKCS12_FUNCS */ |
| 825 | |
| 826 | if (!pkcs12_ok) { |
| 827 | wpa_printf(MSG_DEBUG, "GnuTLS: PKCS#12 support not " |
| 828 | "included"); |
| 829 | goto fail; |
| 830 | } |
| 831 | } |
| 832 | |
Dmitry Shmidt | d97138d | 2015-12-28 13:27:49 -0800 | [diff] [blame] | 833 | #if GNUTLS_VERSION_NUMBER >= 0x030103 |
| 834 | os_free(global->ocsp_stapling_response); |
| 835 | if (params->ocsp_stapling_response) |
| 836 | global->ocsp_stapling_response = |
| 837 | os_strdup(params->ocsp_stapling_response); |
| 838 | else |
| 839 | global->ocsp_stapling_response = NULL; |
| 840 | gnutls_certificate_set_ocsp_status_request_function( |
| 841 | global->xcred, server_ocsp_status_req, global); |
| 842 | #endif /* 3.1.3 */ |
| 843 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 844 | global->params_set = 1; |
| 845 | |
| 846 | return 0; |
| 847 | |
| 848 | fail: |
| 849 | gnutls_certificate_free_credentials(global->xcred); |
| 850 | return -1; |
| 851 | } |
| 852 | |
| 853 | |
Hai Shalom | 74f70d4 | 2019-02-11 14:42:39 -0800 | [diff] [blame] | 854 | int tls_global_set_verify(void *ssl_ctx, int check_crl, int strict) |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 855 | { |
| 856 | /* TODO */ |
| 857 | return 0; |
| 858 | } |
| 859 | |
| 860 | |
| 861 | int tls_connection_set_verify(void *ssl_ctx, struct tls_connection *conn, |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 862 | int verify_peer, unsigned int flags, |
| 863 | const u8 *session_ctx, size_t session_ctx_len) |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 864 | { |
| 865 | if (conn == NULL || conn->session == NULL) |
| 866 | return -1; |
| 867 | |
| 868 | conn->verify_peer = verify_peer; |
| 869 | gnutls_certificate_server_set_request(conn->session, |
| 870 | verify_peer ? GNUTLS_CERT_REQUIRE |
| 871 | : GNUTLS_CERT_REQUEST); |
| 872 | |
| 873 | return 0; |
| 874 | } |
| 875 | |
| 876 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 877 | int tls_connection_get_random(void *ssl_ctx, struct tls_connection *conn, |
| 878 | struct tls_random *keys) |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 879 | { |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 880 | #if GNUTLS_VERSION_NUMBER >= 0x030012 |
| 881 | gnutls_datum_t client, server; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 882 | |
| 883 | if (conn == NULL || conn->session == NULL || keys == NULL) |
| 884 | return -1; |
| 885 | |
| 886 | os_memset(keys, 0, sizeof(*keys)); |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 887 | gnutls_session_get_random(conn->session, &client, &server); |
| 888 | keys->client_random = client.data; |
| 889 | keys->server_random = server.data; |
| 890 | keys->client_random_len = client.size; |
| 891 | keys->server_random_len = client.size; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 892 | |
| 893 | return 0; |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 894 | #else /* 3.0.18 */ |
| 895 | return -1; |
| 896 | #endif /* 3.0.18 */ |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 897 | } |
| 898 | |
| 899 | |
Dmitry Shmidt | 849734c | 2016-05-27 09:59:01 -0700 | [diff] [blame] | 900 | int tls_connection_export_key(void *tls_ctx, struct tls_connection *conn, |
Hai Shalom | 021b0b5 | 2019-04-10 11:17:58 -0700 | [diff] [blame] | 901 | const char *label, const u8 *context, |
| 902 | size_t context_len, u8 *out, size_t out_len) |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 903 | { |
Dmitry Shmidt | 849734c | 2016-05-27 09:59:01 -0700 | [diff] [blame] | 904 | if (conn == NULL || conn->session == NULL) |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 905 | return -1; |
| 906 | |
Hai Shalom | 021b0b5 | 2019-04-10 11:17:58 -0700 | [diff] [blame] | 907 | #if GNUTLS_VERSION_NUMBER >= 0x030404 |
| 908 | return gnutls_prf_rfc5705(conn->session, os_strlen(label), label, |
| 909 | context_len, (const char *) context, |
| 910 | out_len, (char *) out); |
| 911 | #else /* 3.4.4 */ |
| 912 | if (context) |
| 913 | return -1; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 914 | return gnutls_prf(conn->session, os_strlen(label), label, |
Dmitry Shmidt | 849734c | 2016-05-27 09:59:01 -0700 | [diff] [blame] | 915 | 0 /* client_random first */, 0, NULL, out_len, |
| 916 | (char *) out); |
Hai Shalom | 021b0b5 | 2019-04-10 11:17:58 -0700 | [diff] [blame] | 917 | #endif /* 3.4.4 */ |
Dmitry Shmidt | 849734c | 2016-05-27 09:59:01 -0700 | [diff] [blame] | 918 | } |
| 919 | |
| 920 | |
| 921 | int tls_connection_get_eap_fast_key(void *tls_ctx, struct tls_connection *conn, |
| 922 | u8 *out, size_t out_len) |
| 923 | { |
| 924 | return -1; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 925 | } |
| 926 | |
| 927 | |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 928 | static void gnutls_tls_fail_event(struct tls_connection *conn, |
| 929 | const gnutls_datum_t *cert, int depth, |
| 930 | const char *subject, const char *err_str, |
| 931 | enum tls_fail_reason reason) |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 932 | { |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 933 | union tls_event_data ev; |
| 934 | struct tls_global *global = conn->global; |
| 935 | struct wpabuf *cert_buf = NULL; |
| 936 | |
| 937 | if (global->event_cb == NULL) |
| 938 | return; |
| 939 | |
| 940 | os_memset(&ev, 0, sizeof(ev)); |
| 941 | ev.cert_fail.depth = depth; |
| 942 | ev.cert_fail.subject = subject ? subject : ""; |
| 943 | ev.cert_fail.reason = reason; |
| 944 | ev.cert_fail.reason_txt = err_str; |
| 945 | if (cert) { |
| 946 | cert_buf = wpabuf_alloc_copy(cert->data, cert->size); |
| 947 | ev.cert_fail.cert = cert_buf; |
| 948 | } |
| 949 | global->event_cb(global->cb_ctx, TLS_CERT_CHAIN_FAILURE, &ev); |
| 950 | wpabuf_free(cert_buf); |
| 951 | } |
| 952 | |
| 953 | |
| 954 | #if GNUTLS_VERSION_NUMBER < 0x030300 |
| 955 | static int server_eku_purpose(gnutls_x509_crt_t cert) |
| 956 | { |
| 957 | unsigned int i; |
| 958 | |
| 959 | for (i = 0; ; i++) { |
| 960 | char oid[128]; |
| 961 | size_t oid_size = sizeof(oid); |
| 962 | int res; |
| 963 | |
| 964 | res = gnutls_x509_crt_get_key_purpose_oid(cert, i, oid, |
| 965 | &oid_size, NULL); |
| 966 | if (res == GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE) { |
| 967 | if (i == 0) { |
| 968 | /* No EKU - assume any use allowed */ |
| 969 | return 1; |
| 970 | } |
| 971 | break; |
| 972 | } |
| 973 | |
| 974 | if (res < 0) { |
| 975 | wpa_printf(MSG_INFO, "GnuTLS: Failed to get EKU"); |
| 976 | return 0; |
| 977 | } |
| 978 | |
| 979 | wpa_printf(MSG_DEBUG, "GnuTLS: Certificate purpose: %s", oid); |
| 980 | if (os_strcmp(oid, GNUTLS_KP_TLS_WWW_SERVER) == 0 || |
| 981 | os_strcmp(oid, GNUTLS_KP_ANY) == 0) |
| 982 | return 1; |
| 983 | } |
| 984 | |
| 985 | return 0; |
| 986 | } |
| 987 | #endif /* < 3.3.0 */ |
| 988 | |
| 989 | |
| 990 | static int check_ocsp(struct tls_connection *conn, gnutls_session_t session, |
| 991 | gnutls_alert_description_t *err) |
| 992 | { |
| 993 | #if GNUTLS_VERSION_NUMBER >= 0x030103 |
| 994 | gnutls_datum_t response, buf; |
| 995 | gnutls_ocsp_resp_t resp; |
| 996 | unsigned int cert_status; |
| 997 | int res; |
| 998 | |
| 999 | if (!(conn->flags & (TLS_CONN_REQUEST_OCSP | TLS_CONN_REQUIRE_OCSP))) |
| 1000 | return 0; |
| 1001 | |
| 1002 | if (!gnutls_ocsp_status_request_is_checked(session, 0)) { |
| 1003 | if (conn->flags & TLS_CONN_REQUIRE_OCSP) { |
| 1004 | wpa_printf(MSG_INFO, |
| 1005 | "GnuTLS: No valid OCSP response received"); |
| 1006 | goto ocsp_error; |
| 1007 | } |
| 1008 | |
| 1009 | wpa_printf(MSG_DEBUG, |
| 1010 | "GnuTLS: Valid OCSP response was not received - continue since OCSP was not required"); |
| 1011 | return 0; |
| 1012 | } |
| 1013 | |
| 1014 | /* |
| 1015 | * GnuTLS has already verified the OCSP response in |
| 1016 | * check_ocsp_response() and rejected handshake if the certificate was |
| 1017 | * found to be revoked. However, if the response indicates that the |
| 1018 | * status is unknown, handshake continues and reaches here. We need to |
| 1019 | * re-import the OCSP response to check for unknown certificate status, |
| 1020 | * but we do not need to repeat gnutls_ocsp_resp_check_crt() and |
| 1021 | * gnutls_ocsp_resp_verify_direct() calls. |
| 1022 | */ |
| 1023 | |
| 1024 | res = gnutls_ocsp_status_request_get(session, &response); |
| 1025 | if (res != GNUTLS_E_SUCCESS) { |
| 1026 | wpa_printf(MSG_INFO, |
| 1027 | "GnuTLS: OCSP response was received, but it was not valid"); |
| 1028 | goto ocsp_error; |
| 1029 | } |
| 1030 | |
| 1031 | if (gnutls_ocsp_resp_init(&resp) != GNUTLS_E_SUCCESS) |
| 1032 | goto ocsp_error; |
| 1033 | |
| 1034 | res = gnutls_ocsp_resp_import(resp, &response); |
| 1035 | if (res != GNUTLS_E_SUCCESS) { |
| 1036 | wpa_printf(MSG_INFO, |
| 1037 | "GnuTLS: Could not parse received OCSP response: %s", |
| 1038 | gnutls_strerror(res)); |
| 1039 | gnutls_ocsp_resp_deinit(resp); |
| 1040 | goto ocsp_error; |
| 1041 | } |
| 1042 | |
| 1043 | res = gnutls_ocsp_resp_print(resp, GNUTLS_OCSP_PRINT_FULL, &buf); |
| 1044 | if (res == GNUTLS_E_SUCCESS) { |
| 1045 | wpa_printf(MSG_DEBUG, "GnuTLS: %s", buf.data); |
| 1046 | gnutls_free(buf.data); |
| 1047 | } |
| 1048 | |
| 1049 | res = gnutls_ocsp_resp_get_single(resp, 0, NULL, NULL, NULL, |
| 1050 | NULL, &cert_status, NULL, |
| 1051 | NULL, NULL, NULL); |
| 1052 | gnutls_ocsp_resp_deinit(resp); |
| 1053 | if (res != GNUTLS_E_SUCCESS) { |
| 1054 | wpa_printf(MSG_INFO, |
| 1055 | "GnuTLS: Failed to extract OCSP information: %s", |
| 1056 | gnutls_strerror(res)); |
| 1057 | goto ocsp_error; |
| 1058 | } |
| 1059 | |
| 1060 | if (cert_status == GNUTLS_OCSP_CERT_GOOD) { |
| 1061 | wpa_printf(MSG_DEBUG, "GnuTLS: OCSP cert status: good"); |
| 1062 | } else if (cert_status == GNUTLS_OCSP_CERT_REVOKED) { |
| 1063 | wpa_printf(MSG_DEBUG, |
| 1064 | "GnuTLS: OCSP cert status: revoked"); |
| 1065 | goto ocsp_error; |
| 1066 | } else { |
| 1067 | wpa_printf(MSG_DEBUG, |
| 1068 | "GnuTLS: OCSP cert status: unknown"); |
| 1069 | if (conn->flags & TLS_CONN_REQUIRE_OCSP) |
| 1070 | goto ocsp_error; |
| 1071 | wpa_printf(MSG_DEBUG, |
| 1072 | "GnuTLS: OCSP was not required, so allow connection to continue"); |
| 1073 | } |
| 1074 | |
| 1075 | return 0; |
| 1076 | |
| 1077 | ocsp_error: |
| 1078 | gnutls_tls_fail_event(conn, NULL, 0, NULL, |
| 1079 | "bad certificate status response", |
| 1080 | TLS_FAIL_REVOKED); |
| 1081 | *err = GNUTLS_A_CERTIFICATE_REVOKED; |
| 1082 | return -1; |
| 1083 | #else /* GnuTLS 3.1.3 or newer */ |
| 1084 | return 0; |
| 1085 | #endif /* GnuTLS 3.1.3 or newer */ |
| 1086 | } |
| 1087 | |
| 1088 | |
Hai Shalom | 021b0b5 | 2019-04-10 11:17:58 -0700 | [diff] [blame] | 1089 | static int tls_match_suffix_helper(gnutls_x509_crt_t cert, const char *match, |
| 1090 | int full) |
| 1091 | { |
| 1092 | int res = -1; |
| 1093 | |
| 1094 | #if GNUTLS_VERSION_NUMBER >= 0x030300 |
| 1095 | if (full) |
| 1096 | res = gnutls_x509_crt_check_hostname2( |
| 1097 | cert, match, |
| 1098 | GNUTLS_VERIFY_DO_NOT_ALLOW_WILDCARDS); |
| 1099 | #endif /* >= 3.3.0 */ |
| 1100 | if (res == -1) |
| 1101 | res = gnutls_x509_crt_check_hostname(cert, match); |
| 1102 | |
| 1103 | wpa_printf(MSG_DEBUG, "TLS: Match domain against %s%s --> res=%d", |
| 1104 | full ? "": "suffix ", match, res); |
| 1105 | return res; |
| 1106 | } |
| 1107 | |
| 1108 | |
| 1109 | static int tls_match_suffix(gnutls_x509_crt_t cert, const char *match, |
| 1110 | int full) |
| 1111 | { |
| 1112 | char *values, *token, *context = NULL; |
| 1113 | int ret = 0; |
| 1114 | |
| 1115 | if (!os_strchr(match, ';')) |
| 1116 | return tls_match_suffix_helper(cert, match, full); |
| 1117 | |
| 1118 | values = os_strdup(match); |
| 1119 | if (!values) |
| 1120 | return 0; |
| 1121 | |
| 1122 | /* Process each match alternative separately until a match is found */ |
| 1123 | while ((token = str_token(values, ";", &context))) { |
| 1124 | if (tls_match_suffix_helper(cert, token, full)) { |
| 1125 | ret = 1; |
| 1126 | break; |
| 1127 | } |
| 1128 | } |
| 1129 | |
| 1130 | os_free(values); |
| 1131 | return ret; |
| 1132 | } |
| 1133 | |
| 1134 | |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 1135 | static int tls_connection_verify_peer(gnutls_session_t session) |
| 1136 | { |
| 1137 | struct tls_connection *conn; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1138 | unsigned int status, num_certs, i; |
| 1139 | struct os_time now; |
| 1140 | const gnutls_datum_t *certs; |
| 1141 | gnutls_x509_crt_t cert; |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 1142 | gnutls_alert_description_t err; |
| 1143 | int res; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1144 | |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 1145 | conn = gnutls_session_get_ptr(session); |
| 1146 | if (!conn->verify_peer) { |
| 1147 | wpa_printf(MSG_DEBUG, |
| 1148 | "GnuTLS: No peer certificate verification enabled"); |
| 1149 | return 0; |
| 1150 | } |
| 1151 | |
| 1152 | wpa_printf(MSG_DEBUG, "GnuTSL: Verifying peer certificate"); |
| 1153 | |
| 1154 | #if GNUTLS_VERSION_NUMBER >= 0x030300 |
| 1155 | { |
| 1156 | gnutls_typed_vdata_st data[1]; |
| 1157 | unsigned int elements = 0; |
| 1158 | |
| 1159 | os_memset(data, 0, sizeof(data)); |
| 1160 | if (!conn->global->server) { |
| 1161 | data[elements].type = GNUTLS_DT_KEY_PURPOSE_OID; |
| 1162 | data[elements].data = (void *) GNUTLS_KP_TLS_WWW_SERVER; |
| 1163 | elements++; |
| 1164 | } |
| 1165 | res = gnutls_certificate_verify_peers(session, data, 1, |
| 1166 | &status); |
| 1167 | } |
| 1168 | #else /* < 3.3.0 */ |
| 1169 | res = gnutls_certificate_verify_peers2(session, &status); |
| 1170 | #endif |
| 1171 | if (res < 0) { |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1172 | wpa_printf(MSG_INFO, "TLS: Failed to verify peer " |
| 1173 | "certificate chain"); |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 1174 | err = GNUTLS_A_INTERNAL_ERROR; |
| 1175 | goto out; |
| 1176 | } |
| 1177 | |
| 1178 | #if GNUTLS_VERSION_NUMBER >= 0x030104 |
| 1179 | { |
| 1180 | gnutls_datum_t info; |
| 1181 | int ret, type; |
| 1182 | |
| 1183 | type = gnutls_certificate_type_get(session); |
| 1184 | ret = gnutls_certificate_verification_status_print(status, type, |
| 1185 | &info, 0); |
| 1186 | if (ret < 0) { |
| 1187 | wpa_printf(MSG_DEBUG, |
| 1188 | "GnuTLS: Failed to print verification status"); |
| 1189 | err = GNUTLS_A_INTERNAL_ERROR; |
| 1190 | goto out; |
| 1191 | } |
| 1192 | wpa_printf(MSG_DEBUG, "GnuTLS: %s", info.data); |
| 1193 | gnutls_free(info.data); |
| 1194 | } |
| 1195 | #endif /* GnuTLS 3.1.4 or newer */ |
| 1196 | |
| 1197 | certs = gnutls_certificate_get_peers(session, &num_certs); |
| 1198 | if (certs == NULL || num_certs == 0) { |
| 1199 | wpa_printf(MSG_INFO, "TLS: No peer certificate chain received"); |
| 1200 | err = GNUTLS_A_UNKNOWN_CA; |
| 1201 | goto out; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1202 | } |
| 1203 | |
| 1204 | if (conn->verify_peer && (status & GNUTLS_CERT_INVALID)) { |
| 1205 | wpa_printf(MSG_INFO, "TLS: Peer certificate not trusted"); |
| 1206 | if (status & GNUTLS_CERT_INSECURE_ALGORITHM) { |
| 1207 | wpa_printf(MSG_INFO, "TLS: Certificate uses insecure " |
| 1208 | "algorithm"); |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 1209 | gnutls_tls_fail_event(conn, NULL, 0, NULL, |
| 1210 | "certificate uses insecure algorithm", |
| 1211 | TLS_FAIL_BAD_CERTIFICATE); |
| 1212 | err = GNUTLS_A_INSUFFICIENT_SECURITY; |
| 1213 | goto out; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1214 | } |
| 1215 | if (status & GNUTLS_CERT_NOT_ACTIVATED) { |
| 1216 | wpa_printf(MSG_INFO, "TLS: Certificate not yet " |
| 1217 | "activated"); |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 1218 | gnutls_tls_fail_event(conn, NULL, 0, NULL, |
| 1219 | "certificate not yet valid", |
| 1220 | TLS_FAIL_NOT_YET_VALID); |
| 1221 | err = GNUTLS_A_CERTIFICATE_EXPIRED; |
| 1222 | goto out; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1223 | } |
| 1224 | if (status & GNUTLS_CERT_EXPIRED) { |
| 1225 | wpa_printf(MSG_INFO, "TLS: Certificate expired"); |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 1226 | gnutls_tls_fail_event(conn, NULL, 0, NULL, |
| 1227 | "certificate has expired", |
| 1228 | TLS_FAIL_EXPIRED); |
| 1229 | err = GNUTLS_A_CERTIFICATE_EXPIRED; |
| 1230 | goto out; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1231 | } |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 1232 | gnutls_tls_fail_event(conn, NULL, 0, NULL, |
| 1233 | "untrusted certificate", |
| 1234 | TLS_FAIL_UNTRUSTED); |
| 1235 | err = GNUTLS_A_INTERNAL_ERROR; |
| 1236 | goto out; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1237 | } |
| 1238 | |
| 1239 | if (status & GNUTLS_CERT_SIGNER_NOT_FOUND) { |
| 1240 | wpa_printf(MSG_INFO, "TLS: Peer certificate does not have a " |
| 1241 | "known issuer"); |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 1242 | gnutls_tls_fail_event(conn, NULL, 0, NULL, "signed not found", |
| 1243 | TLS_FAIL_UNTRUSTED); |
| 1244 | err = GNUTLS_A_UNKNOWN_CA; |
| 1245 | goto out; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1246 | } |
| 1247 | |
| 1248 | if (status & GNUTLS_CERT_REVOKED) { |
| 1249 | wpa_printf(MSG_INFO, "TLS: Peer certificate has been revoked"); |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 1250 | gnutls_tls_fail_event(conn, NULL, 0, NULL, |
| 1251 | "certificate revoked", |
| 1252 | TLS_FAIL_REVOKED); |
| 1253 | err = GNUTLS_A_CERTIFICATE_REVOKED; |
| 1254 | goto out; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1255 | } |
| 1256 | |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 1257 | if (status != 0) { |
| 1258 | wpa_printf(MSG_INFO, "TLS: Unknown verification status: %d", |
| 1259 | status); |
| 1260 | err = GNUTLS_A_INTERNAL_ERROR; |
| 1261 | goto out; |
| 1262 | } |
| 1263 | |
| 1264 | if (check_ocsp(conn, session, &err)) |
| 1265 | goto out; |
| 1266 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1267 | os_get_time(&now); |
| 1268 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1269 | for (i = 0; i < num_certs; i++) { |
| 1270 | char *buf; |
| 1271 | size_t len; |
| 1272 | if (gnutls_x509_crt_init(&cert) < 0) { |
| 1273 | wpa_printf(MSG_INFO, "TLS: Certificate initialization " |
| 1274 | "failed"); |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 1275 | err = GNUTLS_A_BAD_CERTIFICATE; |
| 1276 | goto out; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1277 | } |
| 1278 | |
| 1279 | if (gnutls_x509_crt_import(cert, &certs[i], |
| 1280 | GNUTLS_X509_FMT_DER) < 0) { |
| 1281 | wpa_printf(MSG_INFO, "TLS: Could not parse peer " |
| 1282 | "certificate %d/%d", i + 1, num_certs); |
| 1283 | gnutls_x509_crt_deinit(cert); |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 1284 | err = GNUTLS_A_BAD_CERTIFICATE; |
| 1285 | goto out; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1286 | } |
| 1287 | |
| 1288 | gnutls_x509_crt_get_dn(cert, NULL, &len); |
| 1289 | len++; |
| 1290 | buf = os_malloc(len + 1); |
| 1291 | if (buf) { |
| 1292 | buf[0] = buf[len] = '\0'; |
| 1293 | gnutls_x509_crt_get_dn(cert, buf, &len); |
| 1294 | } |
| 1295 | wpa_printf(MSG_DEBUG, "TLS: Peer cert chain %d/%d: %s", |
| 1296 | i + 1, num_certs, buf); |
| 1297 | |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 1298 | if (conn->global->event_cb) { |
| 1299 | struct wpabuf *cert_buf = NULL; |
| 1300 | union tls_event_data ev; |
| 1301 | #ifdef CONFIG_SHA256 |
| 1302 | u8 hash[32]; |
| 1303 | const u8 *_addr[1]; |
| 1304 | size_t _len[1]; |
| 1305 | #endif /* CONFIG_SHA256 */ |
| 1306 | |
| 1307 | os_memset(&ev, 0, sizeof(ev)); |
| 1308 | if (conn->global->cert_in_cb) { |
| 1309 | cert_buf = wpabuf_alloc_copy(certs[i].data, |
| 1310 | certs[i].size); |
| 1311 | ev.peer_cert.cert = cert_buf; |
| 1312 | } |
| 1313 | #ifdef CONFIG_SHA256 |
| 1314 | _addr[0] = certs[i].data; |
| 1315 | _len[0] = certs[i].size; |
| 1316 | if (sha256_vector(1, _addr, _len, hash) == 0) { |
| 1317 | ev.peer_cert.hash = hash; |
| 1318 | ev.peer_cert.hash_len = sizeof(hash); |
| 1319 | } |
| 1320 | #endif /* CONFIG_SHA256 */ |
| 1321 | ev.peer_cert.depth = i; |
| 1322 | ev.peer_cert.subject = buf; |
| 1323 | conn->global->event_cb(conn->global->cb_ctx, |
| 1324 | TLS_PEER_CERTIFICATE, &ev); |
| 1325 | wpabuf_free(cert_buf); |
| 1326 | } |
| 1327 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1328 | if (i == 0) { |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 1329 | if (conn->suffix_match && |
Hai Shalom | 021b0b5 | 2019-04-10 11:17:58 -0700 | [diff] [blame] | 1330 | !tls_match_suffix(cert, conn->suffix_match, 0)) { |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 1331 | wpa_printf(MSG_WARNING, |
| 1332 | "TLS: Domain suffix match '%s' not found", |
| 1333 | conn->suffix_match); |
| 1334 | gnutls_tls_fail_event( |
| 1335 | conn, &certs[i], i, buf, |
| 1336 | "Domain suffix mismatch", |
| 1337 | TLS_FAIL_DOMAIN_SUFFIX_MISMATCH); |
| 1338 | err = GNUTLS_A_BAD_CERTIFICATE; |
| 1339 | gnutls_x509_crt_deinit(cert); |
| 1340 | os_free(buf); |
| 1341 | goto out; |
| 1342 | } |
| 1343 | |
Dmitry Shmidt | 2f74e36 | 2015-01-21 13:19:05 -0800 | [diff] [blame] | 1344 | #if GNUTLS_VERSION_NUMBER >= 0x030300 |
| 1345 | if (conn->domain_match && |
Hai Shalom | 021b0b5 | 2019-04-10 11:17:58 -0700 | [diff] [blame] | 1346 | !tls_match_suffix(cert, conn->domain_match, 1)) { |
Dmitry Shmidt | 2f74e36 | 2015-01-21 13:19:05 -0800 | [diff] [blame] | 1347 | wpa_printf(MSG_WARNING, |
| 1348 | "TLS: Domain match '%s' not found", |
| 1349 | conn->domain_match); |
| 1350 | gnutls_tls_fail_event( |
| 1351 | conn, &certs[i], i, buf, |
| 1352 | "Domain mismatch", |
| 1353 | TLS_FAIL_DOMAIN_MISMATCH); |
| 1354 | err = GNUTLS_A_BAD_CERTIFICATE; |
| 1355 | gnutls_x509_crt_deinit(cert); |
| 1356 | os_free(buf); |
| 1357 | goto out; |
| 1358 | } |
| 1359 | #endif /* >= 3.3.0 */ |
| 1360 | |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 1361 | /* TODO: validate altsubject_match. |
| 1362 | * For now, any such configuration is rejected in |
| 1363 | * tls_connection_set_params() */ |
| 1364 | |
| 1365 | #if GNUTLS_VERSION_NUMBER < 0x030300 |
| 1366 | /* |
| 1367 | * gnutls_certificate_verify_peers() not available, so |
| 1368 | * need to check EKU separately. |
| 1369 | */ |
| 1370 | if (!conn->global->server && |
| 1371 | !server_eku_purpose(cert)) { |
| 1372 | wpa_printf(MSG_WARNING, |
| 1373 | "GnuTLS: No server EKU"); |
| 1374 | gnutls_tls_fail_event( |
| 1375 | conn, &certs[i], i, buf, |
| 1376 | "No server EKU", |
| 1377 | TLS_FAIL_BAD_CERTIFICATE); |
| 1378 | err = GNUTLS_A_BAD_CERTIFICATE; |
| 1379 | gnutls_x509_crt_deinit(cert); |
| 1380 | os_free(buf); |
| 1381 | goto out; |
| 1382 | } |
| 1383 | #endif /* < 3.3.0 */ |
| 1384 | } |
| 1385 | |
| 1386 | if (!conn->disable_time_checks && |
| 1387 | (gnutls_x509_crt_get_expiration_time(cert) < now.sec || |
| 1388 | gnutls_x509_crt_get_activation_time(cert) > now.sec)) { |
| 1389 | wpa_printf(MSG_INFO, "TLS: Peer certificate %d/%d is " |
| 1390 | "not valid at this time", |
| 1391 | i + 1, num_certs); |
| 1392 | gnutls_tls_fail_event( |
| 1393 | conn, &certs[i], i, buf, |
| 1394 | "Certificate is not valid at this time", |
| 1395 | TLS_FAIL_EXPIRED); |
| 1396 | gnutls_x509_crt_deinit(cert); |
| 1397 | os_free(buf); |
| 1398 | err = GNUTLS_A_CERTIFICATE_EXPIRED; |
| 1399 | goto out; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1400 | } |
| 1401 | |
| 1402 | os_free(buf); |
| 1403 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1404 | gnutls_x509_crt_deinit(cert); |
| 1405 | } |
| 1406 | |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 1407 | if (conn->global->event_cb != NULL) |
| 1408 | conn->global->event_cb(conn->global->cb_ctx, |
| 1409 | TLS_CERT_CHAIN_SUCCESS, NULL); |
| 1410 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1411 | return 0; |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 1412 | |
| 1413 | out: |
| 1414 | conn->failed++; |
| 1415 | gnutls_alert_send(session, GNUTLS_AL_FATAL, err); |
| 1416 | return GNUTLS_E_CERTIFICATE_ERROR; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1417 | } |
| 1418 | |
| 1419 | |
| 1420 | static struct wpabuf * gnutls_get_appl_data(struct tls_connection *conn) |
| 1421 | { |
| 1422 | int res; |
| 1423 | struct wpabuf *ad; |
| 1424 | wpa_printf(MSG_DEBUG, "GnuTLS: Check for possible Application Data"); |
| 1425 | ad = wpabuf_alloc((wpabuf_len(conn->pull_buf) + 500) * 3); |
| 1426 | if (ad == NULL) |
| 1427 | return NULL; |
| 1428 | |
| 1429 | res = gnutls_record_recv(conn->session, wpabuf_mhead(ad), |
| 1430 | wpabuf_size(ad)); |
| 1431 | wpa_printf(MSG_DEBUG, "GnuTLS: gnutls_record_recv: %d", res); |
| 1432 | if (res < 0) { |
Dmitry Shmidt | 1f69aa5 | 2012-01-24 16:10:04 -0800 | [diff] [blame] | 1433 | wpa_printf(MSG_DEBUG, "%s - gnutls_record_recv failed: %d " |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1434 | "(%s)", __func__, (int) res, |
| 1435 | gnutls_strerror(res)); |
| 1436 | wpabuf_free(ad); |
| 1437 | return NULL; |
| 1438 | } |
| 1439 | |
| 1440 | wpabuf_put(ad, res); |
| 1441 | wpa_printf(MSG_DEBUG, "GnuTLS: Received %d bytes of Application Data", |
| 1442 | res); |
| 1443 | return ad; |
| 1444 | } |
| 1445 | |
| 1446 | |
| 1447 | struct wpabuf * tls_connection_handshake(void *tls_ctx, |
| 1448 | struct tls_connection *conn, |
| 1449 | const struct wpabuf *in_data, |
| 1450 | struct wpabuf **appl_data) |
| 1451 | { |
| 1452 | struct tls_global *global = tls_ctx; |
| 1453 | struct wpabuf *out_data; |
| 1454 | int ret; |
| 1455 | |
| 1456 | if (appl_data) |
| 1457 | *appl_data = NULL; |
| 1458 | |
| 1459 | if (in_data && wpabuf_len(in_data) > 0) { |
| 1460 | if (conn->pull_buf) { |
| 1461 | wpa_printf(MSG_DEBUG, "%s - %lu bytes remaining in " |
| 1462 | "pull_buf", __func__, |
| 1463 | (unsigned long) wpabuf_len(conn->pull_buf)); |
| 1464 | wpabuf_free(conn->pull_buf); |
| 1465 | } |
| 1466 | conn->pull_buf = wpabuf_dup(in_data); |
| 1467 | if (conn->pull_buf == NULL) |
| 1468 | return NULL; |
| 1469 | conn->pull_buf_offset = wpabuf_head(conn->pull_buf); |
| 1470 | } |
| 1471 | |
| 1472 | ret = gnutls_handshake(conn->session); |
| 1473 | if (ret < 0) { |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 1474 | gnutls_alert_description_t alert; |
Roshan Pius | 3a1667e | 2018-07-03 15:17:14 -0700 | [diff] [blame] | 1475 | union tls_event_data ev; |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 1476 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1477 | switch (ret) { |
| 1478 | case GNUTLS_E_AGAIN: |
| 1479 | if (global->server && conn->established && |
| 1480 | conn->push_buf == NULL) { |
| 1481 | /* Need to return something to trigger |
| 1482 | * completion of EAP-TLS. */ |
| 1483 | conn->push_buf = wpabuf_alloc(0); |
| 1484 | } |
| 1485 | break; |
Roshan Pius | 3a1667e | 2018-07-03 15:17:14 -0700 | [diff] [blame] | 1486 | case GNUTLS_E_DH_PRIME_UNACCEPTABLE: |
| 1487 | wpa_printf(MSG_DEBUG, "GnuTLS: Unacceptable DH prime"); |
| 1488 | if (conn->global->event_cb) { |
| 1489 | os_memset(&ev, 0, sizeof(ev)); |
| 1490 | ev.alert.is_local = 1; |
| 1491 | ev.alert.type = "fatal"; |
| 1492 | ev.alert.description = "insufficient security"; |
| 1493 | conn->global->event_cb(conn->global->cb_ctx, |
| 1494 | TLS_ALERT, &ev); |
| 1495 | } |
| 1496 | /* |
| 1497 | * Could send a TLS Alert to the server, but for now, |
| 1498 | * simply terminate handshake. |
| 1499 | */ |
| 1500 | conn->failed++; |
| 1501 | conn->write_alerts++; |
| 1502 | break; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1503 | case GNUTLS_E_FATAL_ALERT_RECEIVED: |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 1504 | alert = gnutls_alert_get(conn->session); |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1505 | wpa_printf(MSG_DEBUG, "%s - received fatal '%s' alert", |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 1506 | __func__, gnutls_alert_get_name(alert)); |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1507 | conn->read_alerts++; |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 1508 | if (conn->global->event_cb != NULL) { |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 1509 | os_memset(&ev, 0, sizeof(ev)); |
| 1510 | ev.alert.is_local = 0; |
| 1511 | ev.alert.type = gnutls_alert_get_name(alert); |
| 1512 | ev.alert.description = ev.alert.type; |
| 1513 | conn->global->event_cb(conn->global->cb_ctx, |
| 1514 | TLS_ALERT, &ev); |
| 1515 | } |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1516 | /* continue */ |
| 1517 | default: |
| 1518 | wpa_printf(MSG_DEBUG, "%s - gnutls_handshake failed " |
| 1519 | "-> %s", __func__, gnutls_strerror(ret)); |
| 1520 | conn->failed++; |
| 1521 | } |
| 1522 | } else { |
| 1523 | size_t size; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1524 | |
Dmitry Shmidt | 1f69aa5 | 2012-01-24 16:10:04 -0800 | [diff] [blame] | 1525 | wpa_printf(MSG_DEBUG, "TLS: Handshake completed successfully"); |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 1526 | |
| 1527 | #if GNUTLS_VERSION_NUMBER >= 0x03010a |
| 1528 | { |
| 1529 | char *desc; |
| 1530 | |
| 1531 | desc = gnutls_session_get_desc(conn->session); |
| 1532 | if (desc) { |
| 1533 | wpa_printf(MSG_DEBUG, "GnuTLS: %s", desc); |
| 1534 | gnutls_free(desc); |
| 1535 | } |
| 1536 | } |
| 1537 | #endif /* GnuTLS 3.1.10 or newer */ |
| 1538 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1539 | conn->established = 1; |
| 1540 | if (conn->push_buf == NULL) { |
| 1541 | /* Need to return something to get final TLS ACK. */ |
| 1542 | conn->push_buf = wpabuf_alloc(0); |
| 1543 | } |
| 1544 | |
| 1545 | gnutls_session_get_data(conn->session, NULL, &size); |
| 1546 | if (global->session_data == NULL || |
| 1547 | global->session_data_size < size) { |
| 1548 | os_free(global->session_data); |
| 1549 | global->session_data = os_malloc(size); |
| 1550 | } |
| 1551 | if (global->session_data) { |
| 1552 | global->session_data_size = size; |
| 1553 | gnutls_session_get_data(conn->session, |
| 1554 | global->session_data, |
| 1555 | &global->session_data_size); |
| 1556 | } |
| 1557 | |
| 1558 | if (conn->pull_buf && appl_data) |
| 1559 | *appl_data = gnutls_get_appl_data(conn); |
| 1560 | } |
| 1561 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1562 | out_data = conn->push_buf; |
| 1563 | conn->push_buf = NULL; |
| 1564 | return out_data; |
| 1565 | } |
| 1566 | |
| 1567 | |
| 1568 | struct wpabuf * tls_connection_server_handshake(void *tls_ctx, |
| 1569 | struct tls_connection *conn, |
| 1570 | const struct wpabuf *in_data, |
| 1571 | struct wpabuf **appl_data) |
| 1572 | { |
| 1573 | return tls_connection_handshake(tls_ctx, conn, in_data, appl_data); |
| 1574 | } |
| 1575 | |
| 1576 | |
| 1577 | struct wpabuf * tls_connection_encrypt(void *tls_ctx, |
| 1578 | struct tls_connection *conn, |
| 1579 | const struct wpabuf *in_data) |
| 1580 | { |
| 1581 | ssize_t res; |
| 1582 | struct wpabuf *buf; |
| 1583 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1584 | res = gnutls_record_send(conn->session, wpabuf_head(in_data), |
| 1585 | wpabuf_len(in_data)); |
| 1586 | if (res < 0) { |
| 1587 | wpa_printf(MSG_INFO, "%s: Encryption failed: %s", |
| 1588 | __func__, gnutls_strerror(res)); |
| 1589 | return NULL; |
| 1590 | } |
| 1591 | |
| 1592 | buf = conn->push_buf; |
| 1593 | conn->push_buf = NULL; |
| 1594 | return buf; |
| 1595 | } |
| 1596 | |
| 1597 | |
| 1598 | struct wpabuf * tls_connection_decrypt(void *tls_ctx, |
| 1599 | struct tls_connection *conn, |
| 1600 | const struct wpabuf *in_data) |
| 1601 | { |
| 1602 | ssize_t res; |
| 1603 | struct wpabuf *out; |
| 1604 | |
| 1605 | if (conn->pull_buf) { |
| 1606 | wpa_printf(MSG_DEBUG, "%s - %lu bytes remaining in " |
| 1607 | "pull_buf", __func__, |
| 1608 | (unsigned long) wpabuf_len(conn->pull_buf)); |
| 1609 | wpabuf_free(conn->pull_buf); |
| 1610 | } |
| 1611 | conn->pull_buf = wpabuf_dup(in_data); |
| 1612 | if (conn->pull_buf == NULL) |
| 1613 | return NULL; |
| 1614 | conn->pull_buf_offset = wpabuf_head(conn->pull_buf); |
| 1615 | |
| 1616 | /* |
| 1617 | * Even though we try to disable TLS compression, it is possible that |
| 1618 | * this cannot be done with all TLS libraries. Add extra buffer space |
| 1619 | * to handle the possibility of the decrypted data being longer than |
| 1620 | * input data. |
| 1621 | */ |
| 1622 | out = wpabuf_alloc((wpabuf_len(in_data) + 500) * 3); |
| 1623 | if (out == NULL) |
| 1624 | return NULL; |
| 1625 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1626 | res = gnutls_record_recv(conn->session, wpabuf_mhead(out), |
| 1627 | wpabuf_size(out)); |
| 1628 | if (res < 0) { |
| 1629 | wpa_printf(MSG_DEBUG, "%s - gnutls_record_recv failed: %d " |
| 1630 | "(%s)", __func__, (int) res, gnutls_strerror(res)); |
| 1631 | wpabuf_free(out); |
| 1632 | return NULL; |
| 1633 | } |
| 1634 | wpabuf_put(out, res); |
| 1635 | |
| 1636 | return out; |
| 1637 | } |
| 1638 | |
| 1639 | |
| 1640 | int tls_connection_resumed(void *ssl_ctx, struct tls_connection *conn) |
| 1641 | { |
| 1642 | if (conn == NULL) |
| 1643 | return 0; |
| 1644 | return gnutls_session_is_resumed(conn->session); |
| 1645 | } |
| 1646 | |
| 1647 | |
| 1648 | int tls_connection_set_cipher_list(void *tls_ctx, struct tls_connection *conn, |
| 1649 | u8 *ciphers) |
| 1650 | { |
| 1651 | /* TODO */ |
| 1652 | return -1; |
| 1653 | } |
| 1654 | |
| 1655 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 1656 | int tls_get_version(void *ssl_ctx, struct tls_connection *conn, |
| 1657 | char *buf, size_t buflen) |
| 1658 | { |
Roshan Pius | 3a1667e | 2018-07-03 15:17:14 -0700 | [diff] [blame] | 1659 | gnutls_protocol_t ver; |
| 1660 | |
| 1661 | ver = gnutls_protocol_get_version(conn->session); |
| 1662 | if (ver == GNUTLS_TLS1_0) |
| 1663 | os_strlcpy(buf, "TLSv1", buflen); |
| 1664 | else if (ver == GNUTLS_TLS1_1) |
| 1665 | os_strlcpy(buf, "TLSv1.1", buflen); |
| 1666 | else if (ver == GNUTLS_TLS1_2) |
| 1667 | os_strlcpy(buf, "TLSv1.2", buflen); |
| 1668 | else |
| 1669 | return -1; |
| 1670 | return 0; |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 1671 | } |
| 1672 | |
| 1673 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1674 | int tls_get_cipher(void *ssl_ctx, struct tls_connection *conn, |
| 1675 | char *buf, size_t buflen) |
| 1676 | { |
Roshan Pius | 3a1667e | 2018-07-03 15:17:14 -0700 | [diff] [blame] | 1677 | gnutls_cipher_algorithm_t cipher; |
| 1678 | gnutls_kx_algorithm_t kx; |
| 1679 | gnutls_mac_algorithm_t mac; |
| 1680 | const char *kx_str, *cipher_str, *mac_str; |
| 1681 | int res; |
| 1682 | |
| 1683 | cipher = gnutls_cipher_get(conn->session); |
| 1684 | cipher_str = gnutls_cipher_get_name(cipher); |
| 1685 | if (!cipher_str) |
| 1686 | cipher_str = ""; |
| 1687 | |
| 1688 | kx = gnutls_kx_get(conn->session); |
| 1689 | kx_str = gnutls_kx_get_name(kx); |
| 1690 | if (!kx_str) |
| 1691 | kx_str = ""; |
| 1692 | |
| 1693 | mac = gnutls_mac_get(conn->session); |
| 1694 | mac_str = gnutls_mac_get_name(mac); |
| 1695 | if (!mac_str) |
| 1696 | mac_str = ""; |
| 1697 | |
| 1698 | if (kx == GNUTLS_KX_RSA) |
| 1699 | res = os_snprintf(buf, buflen, "%s-%s", cipher_str, mac_str); |
| 1700 | else |
| 1701 | res = os_snprintf(buf, buflen, "%s-%s-%s", |
| 1702 | kx_str, cipher_str, mac_str); |
| 1703 | if (os_snprintf_error(buflen, res)) |
| 1704 | return -1; |
| 1705 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1706 | return 0; |
| 1707 | } |
| 1708 | |
| 1709 | |
| 1710 | int tls_connection_enable_workaround(void *ssl_ctx, |
| 1711 | struct tls_connection *conn) |
| 1712 | { |
| 1713 | gnutls_record_disable_padding(conn->session); |
| 1714 | return 0; |
| 1715 | } |
| 1716 | |
| 1717 | |
| 1718 | int tls_connection_client_hello_ext(void *ssl_ctx, struct tls_connection *conn, |
| 1719 | int ext_type, const u8 *data, |
| 1720 | size_t data_len) |
| 1721 | { |
| 1722 | /* TODO */ |
| 1723 | return -1; |
| 1724 | } |
| 1725 | |
| 1726 | |
| 1727 | int tls_connection_get_failed(void *ssl_ctx, struct tls_connection *conn) |
| 1728 | { |
| 1729 | if (conn == NULL) |
| 1730 | return -1; |
| 1731 | return conn->failed; |
| 1732 | } |
| 1733 | |
| 1734 | |
| 1735 | int tls_connection_get_read_alerts(void *ssl_ctx, struct tls_connection *conn) |
| 1736 | { |
| 1737 | if (conn == NULL) |
| 1738 | return -1; |
| 1739 | return conn->read_alerts; |
| 1740 | } |
| 1741 | |
| 1742 | |
| 1743 | int tls_connection_get_write_alerts(void *ssl_ctx, struct tls_connection *conn) |
| 1744 | { |
| 1745 | if (conn == NULL) |
| 1746 | return -1; |
| 1747 | return conn->write_alerts; |
| 1748 | } |
| 1749 | |
| 1750 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1751 | int tls_connection_set_session_ticket_cb(void *tls_ctx, |
| 1752 | struct tls_connection *conn, |
| 1753 | tls_session_ticket_cb cb, void *ctx) |
| 1754 | { |
| 1755 | return -1; |
| 1756 | } |
Dmitry Shmidt | ff787d5 | 2015-01-12 13:01:47 -0800 | [diff] [blame] | 1757 | |
| 1758 | |
| 1759 | int tls_get_library_version(char *buf, size_t buf_len) |
| 1760 | { |
| 1761 | return os_snprintf(buf, buf_len, "GnuTLS build=%s run=%s", |
| 1762 | GNUTLS_VERSION, gnutls_check_version(NULL)); |
| 1763 | } |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 1764 | |
| 1765 | |
| 1766 | void tls_connection_set_success_data(struct tls_connection *conn, |
| 1767 | struct wpabuf *data) |
| 1768 | { |
| 1769 | } |
| 1770 | |
| 1771 | |
| 1772 | void tls_connection_set_success_data_resumed(struct tls_connection *conn) |
| 1773 | { |
| 1774 | } |
| 1775 | |
| 1776 | |
| 1777 | const struct wpabuf * |
| 1778 | tls_connection_get_success_data(struct tls_connection *conn) |
| 1779 | { |
| 1780 | return NULL; |
| 1781 | } |
| 1782 | |
| 1783 | |
| 1784 | void tls_connection_remove_session(struct tls_connection *conn) |
| 1785 | { |
| 1786 | } |