1 /* 2 * RADIUS authentication server 3 * Copyright (c) 2005-2009, 2011, Jouni Malinen <j (at) w1.fi> 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9 #include "includes.h" 10 #include <net/if.h> 11 12 #include "common.h" 13 #include "radius.h" 14 #include "eloop.h" 15 #include "eap_server/eap.h" 16 #include "radius_server.h" 17 18 /** 19 * RADIUS_SESSION_TIMEOUT - Session timeout in seconds 20 */ 21 #define RADIUS_SESSION_TIMEOUT 60 22 23 /** 24 * RADIUS_MAX_SESSION - Maximum number of active sessions 25 */ 26 #define RADIUS_MAX_SESSION 100 27 28 /** 29 * RADIUS_MAX_MSG_LEN - Maximum message length for incoming RADIUS messages 30 */ 31 #define RADIUS_MAX_MSG_LEN 3000 32 33 static struct eapol_callbacks radius_server_eapol_cb; 34 35 struct radius_client; 36 struct radius_server_data; 37 38 /** 39 * struct radius_server_counters - RADIUS server statistics counters 40 */ 41 struct radius_server_counters { 42 u32 access_requests; 43 u32 invalid_requests; 44 u32 dup_access_requests; 45 u32 access_accepts; 46 u32 access_rejects; 47 u32 access_challenges; 48 u32 malformed_access_requests; 49 u32 bad_authenticators; 50 u32 packets_dropped; 51 u32 unknown_types; 52 }; 53 54 /** 55 * struct radius_session - Internal RADIUS server data for a session 56 */ 57 struct radius_session { 58 struct radius_session *next; 59 struct radius_client *client; 60 struct radius_server_data *server; 61 unsigned int sess_id; 62 struct eap_sm *eap; 63 struct eap_eapol_interface *eap_if; 64 65 struct radius_msg *last_msg; 66 char *last_from_addr; 67 int last_from_port; 68 struct sockaddr_storage last_from; 69 socklen_t last_fromlen; 70 u8 last_identifier; 71 struct radius_msg *last_reply; 72 u8 last_authenticator[16]; 73 }; 74 75 /** 76 * struct radius_client - Internal RADIUS server data for a client 77 */ 78 struct radius_client { 79 struct radius_client *next; 80 struct in_addr addr; 81 struct in_addr mask; 82 #ifdef CONFIG_IPV6 83 struct in6_addr addr6; 84 struct in6_addr mask6; 85 #endif /* CONFIG_IPV6 */ 86 char *shared_secret; 87 int shared_secret_len; 88 struct radius_session *sessions; 89 struct radius_server_counters counters; 90 }; 91 92 /** 93 * struct radius_server_data - Internal RADIUS server data 94 */ 95 struct radius_server_data { 96 /** 97 * auth_sock - Socket for RADIUS authentication messages 98 */ 99 int auth_sock; 100 101 /** 102 * clients - List of authorized RADIUS clients 103 */ 104 struct radius_client *clients; 105 106 /** 107 * next_sess_id - Next session identifier 108 */ 109 unsigned int next_sess_id; 110 111 /** 112 * conf_ctx - Context pointer for callbacks 113 * 114 * This is used as the ctx argument in get_eap_user() calls. 115 */ 116 void *conf_ctx; 117 118 /** 119 * num_sess - Number of active sessions 120 */ 121 int num_sess; 122 123 /** 124 * eap_sim_db_priv - EAP-SIM/AKA database context 125 * 126 * This is passed to the EAP-SIM/AKA server implementation as a 127 * callback context. 128 */ 129 void *eap_sim_db_priv; 130 131 /** 132 * ssl_ctx - TLS context 133 * 134 * This is passed to the EAP server implementation as a callback 135 * context for TLS operations. 136 */ 137 void *ssl_ctx; 138 139 /** 140 * pac_opaque_encr_key - PAC-Opaque encryption key for EAP-FAST 141 * 142 * This parameter is used to set a key for EAP-FAST to encrypt the 143 * PAC-Opaque data. It can be set to %NULL if EAP-FAST is not used. If 144 * set, must point to a 16-octet key. 145 */ 146 u8 *pac_opaque_encr_key; 147 148 /** 149 * eap_fast_a_id - EAP-FAST authority identity (A-ID) 150 * 151 * If EAP-FAST is not used, this can be set to %NULL. In theory, this 152 * is a variable length field, but due to some existing implementations 153 * requiring A-ID to be 16 octets in length, it is recommended to use 154 * that length for the field to provide interoperability with deployed 155 * peer implementations. 156 */ 157 u8 *eap_fast_a_id; 158 159 /** 160 * eap_fast_a_id_len - Length of eap_fast_a_id buffer in octets 161 */ 162 size_t eap_fast_a_id_len; 163 164 /** 165 * eap_fast_a_id_info - EAP-FAST authority identifier information 166 * 167 * This A-ID-Info contains a user-friendly name for the A-ID. For 168 * example, this could be the enterprise and server names in 169 * human-readable format. This field is encoded as UTF-8. If EAP-FAST 170 * is not used, this can be set to %NULL. 171 */ 172 char *eap_fast_a_id_info; 173 174 /** 175 * eap_fast_prov - EAP-FAST provisioning modes 176 * 177 * 0 = provisioning disabled, 1 = only anonymous provisioning allowed, 178 * 2 = only authenticated provisioning allowed, 3 = both provisioning 179 * modes allowed. 180 */ 181 int eap_fast_prov; 182 183 /** 184 * pac_key_lifetime - EAP-FAST PAC-Key lifetime in seconds 185 * 186 * This is the hard limit on how long a provisioned PAC-Key can be 187 * used. 188 */ 189 int pac_key_lifetime; 190 191 /** 192 * pac_key_refresh_time - EAP-FAST PAC-Key refresh time in seconds 193 * 194 * This is a soft limit on the PAC-Key. The server will automatically 195 * generate a new PAC-Key when this number of seconds (or fewer) of the 196 * lifetime remains. 197 */ 198 int pac_key_refresh_time; 199 200 /** 201 * eap_sim_aka_result_ind - EAP-SIM/AKA protected success indication 202 * 203 * This controls whether the protected success/failure indication 204 * (AT_RESULT_IND) is used with EAP-SIM and EAP-AKA. 205 */ 206 int eap_sim_aka_result_ind; 207 208 /** 209 * tnc - Trusted Network Connect (TNC) 210 * 211 * This controls whether TNC is enabled and will be required before the 212 * peer is allowed to connect. Note: This is only used with EAP-TTLS 213 * and EAP-FAST. If any other EAP method is enabled, the peer will be 214 * allowed to connect without TNC. 215 */ 216 int tnc; 217 218 /** 219 * pwd_group - The D-H group assigned for EAP-pwd 220 * 221 * If EAP-pwd is not used it can be set to zero. 222 */ 223 u16 pwd_group; 224 225 /** 226 * server_id - Server identity 227 */ 228 const char *server_id; 229 230 /** 231 * wps - Wi-Fi Protected Setup context 232 * 233 * If WPS is used with an external RADIUS server (which is quite 234 * unlikely configuration), this is used to provide a pointer to WPS 235 * context data. Normally, this can be set to %NULL. 236 */ 237 struct wps_context *wps; 238 239 /** 240 * ipv6 - Whether to enable IPv6 support in the RADIUS server 241 */ 242 int ipv6; 243 244 /** 245 * start_time - Timestamp of server start 246 */ 247 struct os_time start_time; 248 249 /** 250 * counters - Statistics counters for server operations 251 * 252 * These counters are the sum over all clients. 253 */ 254 struct radius_server_counters counters; 255 256 /** 257 * get_eap_user - Callback for fetching EAP user information 258 * @ctx: Context data from conf_ctx 259 * @identity: User identity 260 * @identity_len: identity buffer length in octets 261 * @phase2: Whether this is for Phase 2 identity 262 * @user: Data structure for filling in the user information 263 * Returns: 0 on success, -1 on failure 264 * 265 * This is used to fetch information from user database. The callback 266 * will fill in information about allowed EAP methods and the user 267 * password. The password field will be an allocated copy of the 268 * password data and RADIUS server will free it after use. 269 */ 270 int (*get_eap_user)(void *ctx, const u8 *identity, size_t identity_len, 271 int phase2, struct eap_user *user); 272 273 /** 274 * eap_req_id_text - Optional data for EAP-Request/Identity 275 * 276 * This can be used to configure an optional, displayable message that 277 * will be sent in EAP-Request/Identity. This string can contain an 278 * ASCII-0 character (nul) to separate network infromation per RFC 279 * 4284. The actual string length is explicit provided in 280 * eap_req_id_text_len since nul character will not be used as a string 281 * terminator. 282 */ 283 char *eap_req_id_text; 284 285 /** 286 * eap_req_id_text_len - Length of eap_req_id_text buffer in octets 287 */ 288 size_t eap_req_id_text_len; 289 290 /* 291 * msg_ctx - Context data for wpa_msg() calls 292 */ 293 void *msg_ctx; 294 295 #ifdef CONFIG_RADIUS_TEST 296 char *dump_msk_file; 297 #endif /* CONFIG_RADIUS_TEST */ 298 }; 299 300 301 extern int wpa_debug_level; 302 303 #define RADIUS_DEBUG(args...) \ 304 wpa_printf(MSG_DEBUG, "RADIUS SRV: " args) 305 #define RADIUS_ERROR(args...) \ 306 wpa_printf(MSG_ERROR, "RADIUS SRV: " args) 307 #define RADIUS_DUMP(args...) \ 308 wpa_hexdump(MSG_MSGDUMP, "RADIUS SRV: " args) 309 #define RADIUS_DUMP_ASCII(args...) \ 310 wpa_hexdump_ascii(MSG_MSGDUMP, "RADIUS SRV: " args) 311 312 313 static void radius_server_session_timeout(void *eloop_ctx, void *timeout_ctx); 314 static void radius_server_session_remove_timeout(void *eloop_ctx, 315 void *timeout_ctx); 316 317 318 static struct radius_client * 319 radius_server_get_client(struct radius_server_data *data, struct in_addr *addr, 320 int ipv6) 321 { 322 struct radius_client *client = data->clients; 323 324 while (client) { 325 #ifdef CONFIG_IPV6 326 if (ipv6) { 327 struct in6_addr *addr6; 328 int i; 329 330 addr6 = (struct in6_addr *) addr; 331 for (i = 0; i < 16; i++) { 332 if ((addr6->s6_addr[i] & 333 client->mask6.s6_addr[i]) != 334 (client->addr6.s6_addr[i] & 335 client->mask6.s6_addr[i])) { 336 i = 17; 337 break; 338 } 339 } 340 if (i == 16) { 341 break; 342 } 343 } 344 #endif /* CONFIG_IPV6 */ 345 if (!ipv6 && (client->addr.s_addr & client->mask.s_addr) == 346 (addr->s_addr & client->mask.s_addr)) { 347 break; 348 } 349 350 client = client->next; 351 } 352 353 return client; 354 } 355 356 357 static struct radius_session * 358 radius_server_get_session(struct radius_client *client, unsigned int sess_id) 359 { 360 struct radius_session *sess = client->sessions; 361 362 while (sess) { 363 if (sess->sess_id == sess_id) { 364 break; 365 } 366 sess = sess->next; 367 } 368 369 return sess; 370 } 371 372 373 static void radius_server_session_free(struct radius_server_data *data, 374 struct radius_session *sess) 375 { 376 eloop_cancel_timeout(radius_server_session_timeout, data, sess); 377 eloop_cancel_timeout(radius_server_session_remove_timeout, data, sess); 378 eap_server_sm_deinit(sess->eap); 379 radius_msg_free(sess->last_msg); 380 os_free(sess->last_from_addr); 381 radius_msg_free(sess->last_reply); 382 os_free(sess); 383 data->num_sess--; 384 } 385 386 387 static void radius_server_session_remove(struct radius_server_data *data, 388 struct radius_session *sess) 389 { 390 struct radius_client *client = sess->client; 391 struct radius_session *session, *prev; 392 393 eloop_cancel_timeout(radius_server_session_remove_timeout, data, sess); 394 395 prev = NULL; 396 session = client->sessions; 397 while (session) { 398 if (session == sess) { 399 if (prev == NULL) { 400 client->sessions = sess->next; 401 } else { 402 prev->next = sess->next; 403 } 404 radius_server_session_free(data, sess); 405 break; 406 } 407 prev = session; 408 session = session->next; 409 } 410 } 411 412 413 static void radius_server_session_remove_timeout(void *eloop_ctx, 414 void *timeout_ctx) 415 { 416 struct radius_server_data *data = eloop_ctx; 417 struct radius_session *sess = timeout_ctx; 418 RADIUS_DEBUG("Removing completed session 0x%x", sess->sess_id); 419 radius_server_session_remove(data, sess); 420 } 421 422 423 static void radius_server_session_timeout(void *eloop_ctx, void *timeout_ctx) 424 { 425 struct radius_server_data *data = eloop_ctx; 426 struct radius_session *sess = timeout_ctx; 427 428 RADIUS_DEBUG("Timing out authentication session 0x%x", sess->sess_id); 429 radius_server_session_remove(data, sess); 430 } 431 432 433 static struct radius_session * 434 radius_server_new_session(struct radius_server_data *data, 435 struct radius_client *client) 436 { 437 struct radius_session *sess; 438 439 if (data->num_sess >= RADIUS_MAX_SESSION) { 440 RADIUS_DEBUG("Maximum number of existing session - no room " 441 "for a new session"); 442 return NULL; 443 } 444 445 sess = os_zalloc(sizeof(*sess)); 446 if (sess == NULL) 447 return NULL; 448 449 sess->server = data; 450 sess->client = client; 451 sess->sess_id = data->next_sess_id++; 452 sess->next = client->sessions; 453 client->sessions = sess; 454 eloop_register_timeout(RADIUS_SESSION_TIMEOUT, 0, 455 radius_server_session_timeout, data, sess); 456 data->num_sess++; 457 return sess; 458 } 459 460 461 static struct radius_session * 462 radius_server_get_new_session(struct radius_server_data *data, 463 struct radius_client *client, 464 struct radius_msg *msg) 465 { 466 u8 *user; 467 size_t user_len; 468 int res; 469 struct radius_session *sess; 470 struct eap_config eap_conf; 471 472 RADIUS_DEBUG("Creating a new session"); 473 474 user = os_malloc(256); 475 if (user == NULL) { 476 return NULL; 477 } 478 res = radius_msg_get_attr(msg, RADIUS_ATTR_USER_NAME, user, 256); 479 if (res < 0 || res > 256) { 480 RADIUS_DEBUG("Could not get User-Name"); 481 os_free(user); 482 return NULL; 483 } 484 user_len = res; 485 RADIUS_DUMP_ASCII("User-Name", user, user_len); 486 487 res = data->get_eap_user(data->conf_ctx, user, user_len, 0, NULL); 488 os_free(user); 489 490 if (res == 0) { 491 RADIUS_DEBUG("Matching user entry found"); 492 sess = radius_server_new_session(data, client); 493 if (sess == NULL) { 494 RADIUS_DEBUG("Failed to create a new session"); 495 return NULL; 496 } 497 } else { 498 RADIUS_DEBUG("User-Name not found from user database"); 499 return NULL; 500 } 501 502 os_memset(&eap_conf, 0, sizeof(eap_conf)); 503 eap_conf.ssl_ctx = data->ssl_ctx; 504 eap_conf.msg_ctx = data->msg_ctx; 505 eap_conf.eap_sim_db_priv = data->eap_sim_db_priv; 506 eap_conf.backend_auth = TRUE; 507 eap_conf.eap_server = 1; 508 eap_conf.pac_opaque_encr_key = data->pac_opaque_encr_key; 509 eap_conf.eap_fast_a_id = data->eap_fast_a_id; 510 eap_conf.eap_fast_a_id_len = data->eap_fast_a_id_len; 511 eap_conf.eap_fast_a_id_info = data->eap_fast_a_id_info; 512 eap_conf.eap_fast_prov = data->eap_fast_prov; 513 eap_conf.pac_key_lifetime = data->pac_key_lifetime; 514 eap_conf.pac_key_refresh_time = data->pac_key_refresh_time; 515 eap_conf.eap_sim_aka_result_ind = data->eap_sim_aka_result_ind; 516 eap_conf.tnc = data->tnc; 517 eap_conf.wps = data->wps; 518 eap_conf.pwd_group = data->pwd_group; 519 eap_conf.server_id = (const u8 *) data->server_id; 520 eap_conf.server_id_len = os_strlen(data->server_id); 521 sess->eap = eap_server_sm_init(sess, &radius_server_eapol_cb, 522 &eap_conf); 523 if (sess->eap == NULL) { 524 RADIUS_DEBUG("Failed to initialize EAP state machine for the " 525 "new session"); 526 radius_server_session_free(data, sess); 527 return NULL; 528 } 529 sess->eap_if = eap_get_interface(sess->eap); 530 sess->eap_if->eapRestart = TRUE; 531 sess->eap_if->portEnabled = TRUE; 532 533 RADIUS_DEBUG("New session 0x%x initialized", sess->sess_id); 534 535 return sess; 536 } 537 538 539 static struct radius_msg * 540 radius_server_encapsulate_eap(struct radius_server_data *data, 541 struct radius_client *client, 542 struct radius_session *sess, 543 struct radius_msg *request) 544 { 545 struct radius_msg *msg; 546 int code; 547 unsigned int sess_id; 548 struct radius_hdr *hdr = radius_msg_get_hdr(request); 549 550 if (sess->eap_if->eapFail) { 551 sess->eap_if->eapFail = FALSE; 552 code = RADIUS_CODE_ACCESS_REJECT; 553 } else if (sess->eap_if->eapSuccess) { 554 sess->eap_if->eapSuccess = FALSE; 555 code = RADIUS_CODE_ACCESS_ACCEPT; 556 } else { 557 sess->eap_if->eapReq = FALSE; 558 code = RADIUS_CODE_ACCESS_CHALLENGE; 559 } 560 561 msg = radius_msg_new(code, hdr->identifier); 562 if (msg == NULL) { 563 RADIUS_DEBUG("Failed to allocate reply message"); 564 return NULL; 565 } 566 567 sess_id = htonl(sess->sess_id); 568 if (code == RADIUS_CODE_ACCESS_CHALLENGE && 569 !radius_msg_add_attr(msg, RADIUS_ATTR_STATE, 570 (u8 *) &sess_id, sizeof(sess_id))) { 571 RADIUS_DEBUG("Failed to add State attribute"); 572 } 573 574 if (sess->eap_if->eapReqData && 575 !radius_msg_add_eap(msg, wpabuf_head(sess->eap_if->eapReqData), 576 wpabuf_len(sess->eap_if->eapReqData))) { 577 RADIUS_DEBUG("Failed to add EAP-Message attribute"); 578 } 579 580 if (code == RADIUS_CODE_ACCESS_ACCEPT && sess->eap_if->eapKeyData) { 581 int len; 582 #ifdef CONFIG_RADIUS_TEST 583 if (data->dump_msk_file) { 584 FILE *f; 585 char buf[2 * 64 + 1]; 586 f = fopen(data->dump_msk_file, "a"); 587 if (f) { 588 len = sess->eap_if->eapKeyDataLen; 589 if (len > 64) 590 len = 64; 591 len = wpa_snprintf_hex( 592 buf, sizeof(buf), 593 sess->eap_if->eapKeyData, len); 594 buf[len] = '\0'; 595 fprintf(f, "%s\n", buf); 596 fclose(f); 597 } 598 } 599 #endif /* CONFIG_RADIUS_TEST */ 600 if (sess->eap_if->eapKeyDataLen > 64) { 601 len = 32; 602 } else { 603 len = sess->eap_if->eapKeyDataLen / 2; 604 } 605 if (!radius_msg_add_mppe_keys(msg, hdr->authenticator, 606 (u8 *) client->shared_secret, 607 client->shared_secret_len, 608 sess->eap_if->eapKeyData + len, 609 len, sess->eap_if->eapKeyData, 610 len)) { 611 RADIUS_DEBUG("Failed to add MPPE key attributes"); 612 } 613 } 614 615 if (radius_msg_copy_attr(msg, request, RADIUS_ATTR_PROXY_STATE) < 0) { 616 RADIUS_DEBUG("Failed to copy Proxy-State attribute(s)"); 617 radius_msg_free(msg); 618 return NULL; 619 } 620 621 if (radius_msg_finish_srv(msg, (u8 *) client->shared_secret, 622 client->shared_secret_len, 623 hdr->authenticator) < 0) { 624 RADIUS_DEBUG("Failed to add Message-Authenticator attribute"); 625 } 626 627 return msg; 628 } 629 630 631 static int radius_server_reject(struct radius_server_data *data, 632 struct radius_client *client, 633 struct radius_msg *request, 634 struct sockaddr *from, socklen_t fromlen, 635 const char *from_addr, int from_port) 636 { 637 struct radius_msg *msg; 638 int ret = 0; 639 struct eap_hdr eapfail; 640 struct wpabuf *buf; 641 struct radius_hdr *hdr = radius_msg_get_hdr(request); 642 643 RADIUS_DEBUG("Reject invalid request from %s:%d", 644 from_addr, from_port); 645 646 msg = radius_msg_new(RADIUS_CODE_ACCESS_REJECT, hdr->identifier); 647 if (msg == NULL) { 648 return -1; 649 } 650 651 os_memset(&eapfail, 0, sizeof(eapfail)); 652 eapfail.code = EAP_CODE_FAILURE; 653 eapfail.identifier = 0; 654 eapfail.length = host_to_be16(sizeof(eapfail)); 655 656 if (!radius_msg_add_eap(msg, (u8 *) &eapfail, sizeof(eapfail))) { 657 RADIUS_DEBUG("Failed to add EAP-Message attribute"); 658 } 659 660 if (radius_msg_copy_attr(msg, request, RADIUS_ATTR_PROXY_STATE) < 0) { 661 RADIUS_DEBUG("Failed to copy Proxy-State attribute(s)"); 662 radius_msg_free(msg); 663 return -1; 664 } 665 666 if (radius_msg_finish_srv(msg, (u8 *) client->shared_secret, 667 client->shared_secret_len, 668 hdr->authenticator) < 669 0) { 670 RADIUS_DEBUG("Failed to add Message-Authenticator attribute"); 671 } 672 673 if (wpa_debug_level <= MSG_MSGDUMP) { 674 radius_msg_dump(msg); 675 } 676 677 data->counters.access_rejects++; 678 client->counters.access_rejects++; 679 buf = radius_msg_get_buf(msg); 680 if (sendto(data->auth_sock, wpabuf_head(buf), wpabuf_len(buf), 0, 681 (struct sockaddr *) from, sizeof(*from)) < 0) { 682 perror("sendto[RADIUS SRV]"); 683 ret = -1; 684 } 685 686 radius_msg_free(msg); 687 688 return ret; 689 } 690 691 692 static int radius_server_request(struct radius_server_data *data, 693 struct radius_msg *msg, 694 struct sockaddr *from, socklen_t fromlen, 695 struct radius_client *client, 696 const char *from_addr, int from_port, 697 struct radius_session *force_sess) 698 { 699 struct wpabuf *eap = NULL; 700 int res, state_included = 0; 701 u8 statebuf[4]; 702 unsigned int state; 703 struct radius_session *sess; 704 struct radius_msg *reply; 705 int is_complete = 0; 706 707 if (force_sess) 708 sess = force_sess; 709 else { 710 res = radius_msg_get_attr(msg, RADIUS_ATTR_STATE, statebuf, 711 sizeof(statebuf)); 712 state_included = res >= 0; 713 if (res == sizeof(statebuf)) { 714 state = WPA_GET_BE32(statebuf); 715 sess = radius_server_get_session(client, state); 716 } else { 717 sess = NULL; 718 } 719 } 720 721 if (sess) { 722 RADIUS_DEBUG("Request for session 0x%x", sess->sess_id); 723 } else if (state_included) { 724 RADIUS_DEBUG("State attribute included but no session found"); 725 radius_server_reject(data, client, msg, from, fromlen, 726 from_addr, from_port); 727 return -1; 728 } else { 729 sess = radius_server_get_new_session(data, client, msg); 730 if (sess == NULL) { 731 RADIUS_DEBUG("Could not create a new session"); 732 radius_server_reject(data, client, msg, from, fromlen, 733 from_addr, from_port); 734 return -1; 735 } 736 } 737 738 if (sess->last_from_port == from_port && 739 sess->last_identifier == radius_msg_get_hdr(msg)->identifier && 740 os_memcmp(sess->last_authenticator, 741 radius_msg_get_hdr(msg)->authenticator, 16) == 0) { 742 RADIUS_DEBUG("Duplicate message from %s", from_addr); 743 data->counters.dup_access_requests++; 744 client->counters.dup_access_requests++; 745 746 if (sess->last_reply) { 747 struct wpabuf *buf; 748 buf = radius_msg_get_buf(sess->last_reply); 749 res = sendto(data->auth_sock, wpabuf_head(buf), 750 wpabuf_len(buf), 0, 751 (struct sockaddr *) from, fromlen); 752 if (res < 0) { 753 perror("sendto[RADIUS SRV]"); 754 } 755 return 0; 756 } 757 758 RADIUS_DEBUG("No previous reply available for duplicate " 759 "message"); 760 return -1; 761 } 762 763 eap = radius_msg_get_eap(msg); 764 if (eap == NULL) { 765 RADIUS_DEBUG("No EAP-Message in RADIUS packet from %s", 766 from_addr); 767 data->counters.packets_dropped++; 768 client->counters.packets_dropped++; 769 return -1; 770 } 771 772 RADIUS_DUMP("Received EAP data", wpabuf_head(eap), wpabuf_len(eap)); 773 774 /* FIX: if Code is Request, Success, or Failure, send Access-Reject; 775 * RFC3579 Sect. 2.6.2. 776 * Include EAP-Response/Nak with no preferred method if 777 * code == request. 778 * If code is not 1-4, discard the packet silently. 779 * Or is this already done by the EAP state machine? */ 780 781 wpabuf_free(sess->eap_if->eapRespData); 782 sess->eap_if->eapRespData = eap; 783 sess->eap_if->eapResp = TRUE; 784 eap_server_sm_step(sess->eap); 785 786 if ((sess->eap_if->eapReq || sess->eap_if->eapSuccess || 787 sess->eap_if->eapFail) && sess->eap_if->eapReqData) { 788 RADIUS_DUMP("EAP data from the state machine", 789 wpabuf_head(sess->eap_if->eapReqData), 790 wpabuf_len(sess->eap_if->eapReqData)); 791 } else if (sess->eap_if->eapFail) { 792 RADIUS_DEBUG("No EAP data from the state machine, but eapFail " 793 "set"); 794 } else if (eap_sm_method_pending(sess->eap)) { 795 radius_msg_free(sess->last_msg); 796 sess->last_msg = msg; 797 sess->last_from_port = from_port; 798 os_free(sess->last_from_addr); 799 sess->last_from_addr = os_strdup(from_addr); 800 sess->last_fromlen = fromlen; 801 os_memcpy(&sess->last_from, from, fromlen); 802 return -2; 803 } else { 804 RADIUS_DEBUG("No EAP data from the state machine - ignore this" 805 " Access-Request silently (assuming it was a " 806 "duplicate)"); 807 data->counters.packets_dropped++; 808 client->counters.packets_dropped++; 809 return -1; 810 } 811 812 if (sess->eap_if->eapSuccess || sess->eap_if->eapFail) 813 is_complete = 1; 814 815 reply = radius_server_encapsulate_eap(data, client, sess, msg); 816 817 if (reply) { 818 struct wpabuf *buf; 819 struct radius_hdr *hdr; 820 821 RADIUS_DEBUG("Reply to %s:%d", from_addr, from_port); 822 if (wpa_debug_level <= MSG_MSGDUMP) { 823 radius_msg_dump(reply); 824 } 825 826 switch (radius_msg_get_hdr(reply)->code) { 827 case RADIUS_CODE_ACCESS_ACCEPT: 828 data->counters.access_accepts++; 829 client->counters.access_accepts++; 830 break; 831 case RADIUS_CODE_ACCESS_REJECT: 832 data->counters.access_rejects++; 833 client->counters.access_rejects++; 834 break; 835 case RADIUS_CODE_ACCESS_CHALLENGE: 836 data->counters.access_challenges++; 837 client->counters.access_challenges++; 838 break; 839 } 840 buf = radius_msg_get_buf(reply); 841 res = sendto(data->auth_sock, wpabuf_head(buf), 842 wpabuf_len(buf), 0, 843 (struct sockaddr *) from, fromlen); 844 if (res < 0) { 845 perror("sendto[RADIUS SRV]"); 846 } 847 radius_msg_free(sess->last_reply); 848 sess->last_reply = reply; 849 sess->last_from_port = from_port; 850 hdr = radius_msg_get_hdr(msg); 851 sess->last_identifier = hdr->identifier; 852 os_memcpy(sess->last_authenticator, hdr->authenticator, 16); 853 } else { 854 data->counters.packets_dropped++; 855 client->counters.packets_dropped++; 856 } 857 858 if (is_complete) { 859 RADIUS_DEBUG("Removing completed session 0x%x after timeout", 860 sess->sess_id); 861 eloop_cancel_timeout(radius_server_session_remove_timeout, 862 data, sess); 863 eloop_register_timeout(10, 0, 864 radius_server_session_remove_timeout, 865 data, sess); 866 } 867 868 return 0; 869 } 870 871 872 static void radius_server_receive_auth(int sock, void *eloop_ctx, 873 void *sock_ctx) 874 { 875 struct radius_server_data *data = eloop_ctx; 876 u8 *buf = NULL; 877 union { 878 struct sockaddr_storage ss; 879 struct sockaddr_in sin; 880 #ifdef CONFIG_IPV6 881 struct sockaddr_in6 sin6; 882 #endif /* CONFIG_IPV6 */ 883 } from; 884 socklen_t fromlen; 885 int len; 886 struct radius_client *client = NULL; 887 struct radius_msg *msg = NULL; 888 char abuf[50]; 889 int from_port = 0; 890 891 buf = os_malloc(RADIUS_MAX_MSG_LEN); 892 if (buf == NULL) { 893 goto fail; 894 } 895 896 fromlen = sizeof(from); 897 len = recvfrom(sock, buf, RADIUS_MAX_MSG_LEN, 0, 898 (struct sockaddr *) &from.ss, &fromlen); 899 if (len < 0) { 900 perror("recvfrom[radius_server]"); 901 goto fail; 902 } 903 904 #ifdef CONFIG_IPV6 905 if (data->ipv6) { 906 if (inet_ntop(AF_INET6, &from.sin6.sin6_addr, abuf, 907 sizeof(abuf)) == NULL) 908 abuf[0] = '\0'; 909 from_port = ntohs(from.sin6.sin6_port); 910 RADIUS_DEBUG("Received %d bytes from %s:%d", 911 len, abuf, from_port); 912 913 client = radius_server_get_client(data, 914 (struct in_addr *) 915 &from.sin6.sin6_addr, 1); 916 } 917 #endif /* CONFIG_IPV6 */ 918 919 if (!data->ipv6) { 920 os_strlcpy(abuf, inet_ntoa(from.sin.sin_addr), sizeof(abuf)); 921 from_port = ntohs(from.sin.sin_port); 922 RADIUS_DEBUG("Received %d bytes from %s:%d", 923 len, abuf, from_port); 924 925 client = radius_server_get_client(data, &from.sin.sin_addr, 0); 926 } 927 928 RADIUS_DUMP("Received data", buf, len); 929 930 if (client == NULL) { 931 RADIUS_DEBUG("Unknown client %s - packet ignored", abuf); 932 data->counters.invalid_requests++; 933 goto fail; 934 } 935 936 msg = radius_msg_parse(buf, len); 937 if (msg == NULL) { 938 RADIUS_DEBUG("Parsing incoming RADIUS frame failed"); 939 data->counters.malformed_access_requests++; 940 client->counters.malformed_access_requests++; 941 goto fail; 942 } 943 944 os_free(buf); 945 buf = NULL; 946 947 if (wpa_debug_level <= MSG_MSGDUMP) { 948 radius_msg_dump(msg); 949 } 950 951 if (radius_msg_get_hdr(msg)->code != RADIUS_CODE_ACCESS_REQUEST) { 952 RADIUS_DEBUG("Unexpected RADIUS code %d", 953 radius_msg_get_hdr(msg)->code); 954 data->counters.unknown_types++; 955 client->counters.unknown_types++; 956 goto fail; 957 } 958 959 data->counters.access_requests++; 960 client->counters.access_requests++; 961 962 if (radius_msg_verify_msg_auth(msg, (u8 *) client->shared_secret, 963 client->shared_secret_len, NULL)) { 964 RADIUS_DEBUG("Invalid Message-Authenticator from %s", abuf); 965 data->counters.bad_authenticators++; 966 client->counters.bad_authenticators++; 967 goto fail; 968 } 969 970 if (radius_server_request(data, msg, (struct sockaddr *) &from, 971 fromlen, client, abuf, from_port, NULL) == 972 -2) 973 return; /* msg was stored with the session */ 974 975 fail: 976 radius_msg_free(msg); 977 os_free(buf); 978 } 979 980 981 static int radius_server_disable_pmtu_discovery(int s) 982 { 983 int r = -1; 984 #if defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DONT) 985 /* Turn off Path MTU discovery on IPv4/UDP sockets. */ 986 int action = IP_PMTUDISC_DONT; 987 r = setsockopt(s, IPPROTO_IP, IP_MTU_DISCOVER, &action, 988 sizeof(action)); 989 if (r == -1) 990 wpa_printf(MSG_ERROR, "Failed to set IP_MTU_DISCOVER: " 991 "%s", strerror(errno)); 992 #endif 993 return r; 994 } 995 996 997 static int radius_server_open_socket(int port) 998 { 999 int s; 1000 struct sockaddr_in addr; 1001 1002 s = socket(PF_INET, SOCK_DGRAM, 0); 1003 if (s < 0) { 1004 perror("socket"); 1005 return -1; 1006 } 1007 1008 radius_server_disable_pmtu_discovery(s); 1009 1010 os_memset(&addr, 0, sizeof(addr)); 1011 addr.sin_family = AF_INET; 1012 addr.sin_port = htons(port); 1013 if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) { 1014 perror("bind"); 1015 close(s); 1016 return -1; 1017 } 1018 1019 return s; 1020 } 1021 1022 1023 #ifdef CONFIG_IPV6 1024 static int radius_server_open_socket6(int port) 1025 { 1026 int s; 1027 struct sockaddr_in6 addr; 1028 1029 s = socket(PF_INET6, SOCK_DGRAM, 0); 1030 if (s < 0) { 1031 perror("socket[IPv6]"); 1032 return -1; 1033 } 1034 1035 os_memset(&addr, 0, sizeof(addr)); 1036 addr.sin6_family = AF_INET6; 1037 os_memcpy(&addr.sin6_addr, &in6addr_any, sizeof(in6addr_any)); 1038 addr.sin6_port = htons(port); 1039 if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) { 1040 perror("bind"); 1041 close(s); 1042 return -1; 1043 } 1044 1045 return s; 1046 } 1047 #endif /* CONFIG_IPV6 */ 1048 1049 1050 static void radius_server_free_sessions(struct radius_server_data *data, 1051 struct radius_session *sessions) 1052 { 1053 struct radius_session *session, *prev; 1054 1055 session = sessions; 1056 while (session) { 1057 prev = session; 1058 session = session->next; 1059 radius_server_session_free(data, prev); 1060 } 1061 } 1062 1063 1064 static void radius_server_free_clients(struct radius_server_data *data, 1065 struct radius_client *clients) 1066 { 1067 struct radius_client *client, *prev; 1068 1069 client = clients; 1070 while (client) { 1071 prev = client; 1072 client = client->next; 1073 1074 radius_server_free_sessions(data, prev->sessions); 1075 os_free(prev->shared_secret); 1076 os_free(prev); 1077 } 1078 } 1079 1080 1081 static struct radius_client * 1082 radius_server_read_clients(const char *client_file, int ipv6) 1083 { 1084 FILE *f; 1085 const int buf_size = 1024; 1086 char *buf, *pos; 1087 struct radius_client *clients, *tail, *entry; 1088 int line = 0, mask, failed = 0, i; 1089 struct in_addr addr; 1090 #ifdef CONFIG_IPV6 1091 struct in6_addr addr6; 1092 #endif /* CONFIG_IPV6 */ 1093 unsigned int val; 1094 1095 f = fopen(client_file, "r"); 1096 if (f == NULL) { 1097 RADIUS_ERROR("Could not open client file '%s'", client_file); 1098 return NULL; 1099 } 1100 1101 buf = os_malloc(buf_size); 1102 if (buf == NULL) { 1103 fclose(f); 1104 return NULL; 1105 } 1106 1107 clients = tail = NULL; 1108 while (fgets(buf, buf_size, f)) { 1109 /* Configuration file format: 1110 * 192.168.1.0/24 secret 1111 * 192.168.1.2 secret 1112 * fe80::211:22ff:fe33:4455/64 secretipv6 1113 */ 1114 line++; 1115 buf[buf_size - 1] = '\0'; 1116 pos = buf; 1117 while (*pos != '\0' && *pos != '\n') 1118 pos++; 1119 if (*pos == '\n') 1120 *pos = '\0'; 1121 if (*buf == '\0' || *buf == '#') 1122 continue; 1123 1124 pos = buf; 1125 while ((*pos >= '0' && *pos <= '9') || *pos == '.' || 1126 (*pos >= 'a' && *pos <= 'f') || *pos == ':' || 1127 (*pos >= 'A' && *pos <= 'F')) { 1128 pos++; 1129 } 1130 1131 if (*pos == '\0') { 1132 failed = 1; 1133 break; 1134 } 1135 1136 if (*pos == '/') { 1137 char *end; 1138 *pos++ = '\0'; 1139 mask = strtol(pos, &end, 10); 1140 if ((pos == end) || 1141 (mask < 0 || mask > (ipv6 ? 128 : 32))) { 1142 failed = 1; 1143 break; 1144 } 1145 pos = end; 1146 } else { 1147 mask = ipv6 ? 128 : 32; 1148 *pos++ = '\0'; 1149 } 1150 1151 if (!ipv6 && inet_aton(buf, &addr) == 0) { 1152 failed = 1; 1153 break; 1154 } 1155 #ifdef CONFIG_IPV6 1156 if (ipv6 && inet_pton(AF_INET6, buf, &addr6) <= 0) { 1157 if (inet_pton(AF_INET, buf, &addr) <= 0) { 1158 failed = 1; 1159 break; 1160 } 1161 /* Convert IPv4 address to IPv6 */ 1162 if (mask <= 32) 1163 mask += (128 - 32); 1164 os_memset(addr6.s6_addr, 0, 10); 1165 addr6.s6_addr[10] = 0xff; 1166 addr6.s6_addr[11] = 0xff; 1167 os_memcpy(addr6.s6_addr + 12, (char *) &addr.s_addr, 1168 4); 1169 } 1170 #endif /* CONFIG_IPV6 */ 1171 1172 while (*pos == ' ' || *pos == '\t') { 1173 pos++; 1174 } 1175 1176 if (*pos == '\0') { 1177 failed = 1; 1178 break; 1179 } 1180 1181 entry = os_zalloc(sizeof(*entry)); 1182 if (entry == NULL) { 1183 failed = 1; 1184 break; 1185 } 1186 entry->shared_secret = os_strdup(pos); 1187 if (entry->shared_secret == NULL) { 1188 failed = 1; 1189 os_free(entry); 1190 break; 1191 } 1192 entry->shared_secret_len = os_strlen(entry->shared_secret); 1193 entry->addr.s_addr = addr.s_addr; 1194 if (!ipv6) { 1195 val = 0; 1196 for (i = 0; i < mask; i++) 1197 val |= 1 << (31 - i); 1198 entry->mask.s_addr = htonl(val); 1199 } 1200 #ifdef CONFIG_IPV6 1201 if (ipv6) { 1202 int offset = mask / 8; 1203 1204 os_memcpy(entry->addr6.s6_addr, addr6.s6_addr, 16); 1205 os_memset(entry->mask6.s6_addr, 0xff, offset); 1206 val = 0; 1207 for (i = 0; i < (mask % 8); i++) 1208 val |= 1 << (7 - i); 1209 if (offset < 16) 1210 entry->mask6.s6_addr[offset] = val; 1211 } 1212 #endif /* CONFIG_IPV6 */ 1213 1214 if (tail == NULL) { 1215 clients = tail = entry; 1216 } else { 1217 tail->next = entry; 1218 tail = entry; 1219 } 1220 } 1221 1222 if (failed) { 1223 RADIUS_ERROR("Invalid line %d in '%s'", line, client_file); 1224 radius_server_free_clients(NULL, clients); 1225 clients = NULL; 1226 } 1227 1228 os_free(buf); 1229 fclose(f); 1230 1231 return clients; 1232 } 1233 1234 1235 /** 1236 * radius_server_init - Initialize RADIUS server 1237 * @conf: Configuration for the RADIUS server 1238 * Returns: Pointer to private RADIUS server context or %NULL on failure 1239 * 1240 * This initializes a RADIUS server instance and returns a context pointer that 1241 * will be used in other calls to the RADIUS server module. The server can be 1242 * deinitialize by calling radius_server_deinit(). 1243 */ 1244 struct radius_server_data * 1245 radius_server_init(struct radius_server_conf *conf) 1246 { 1247 struct radius_server_data *data; 1248 1249 #ifndef CONFIG_IPV6 1250 if (conf->ipv6) { 1251 fprintf(stderr, "RADIUS server compiled without IPv6 " 1252 "support.\n"); 1253 return NULL; 1254 } 1255 #endif /* CONFIG_IPV6 */ 1256 1257 data = os_zalloc(sizeof(*data)); 1258 if (data == NULL) 1259 return NULL; 1260 1261 os_get_time(&data->start_time); 1262 data->conf_ctx = conf->conf_ctx; 1263 data->eap_sim_db_priv = conf->eap_sim_db_priv; 1264 data->ssl_ctx = conf->ssl_ctx; 1265 data->msg_ctx = conf->msg_ctx; 1266 data->ipv6 = conf->ipv6; 1267 if (conf->pac_opaque_encr_key) { 1268 data->pac_opaque_encr_key = os_malloc(16); 1269 os_memcpy(data->pac_opaque_encr_key, conf->pac_opaque_encr_key, 1270 16); 1271 } 1272 if (conf->eap_fast_a_id) { 1273 data->eap_fast_a_id = os_malloc(conf->eap_fast_a_id_len); 1274 if (data->eap_fast_a_id) { 1275 os_memcpy(data->eap_fast_a_id, conf->eap_fast_a_id, 1276 conf->eap_fast_a_id_len); 1277 data->eap_fast_a_id_len = conf->eap_fast_a_id_len; 1278 } 1279 } 1280 if (conf->eap_fast_a_id_info) 1281 data->eap_fast_a_id_info = os_strdup(conf->eap_fast_a_id_info); 1282 data->eap_fast_prov = conf->eap_fast_prov; 1283 data->pac_key_lifetime = conf->pac_key_lifetime; 1284 data->pac_key_refresh_time = conf->pac_key_refresh_time; 1285 data->get_eap_user = conf->get_eap_user; 1286 data->eap_sim_aka_result_ind = conf->eap_sim_aka_result_ind; 1287 data->tnc = conf->tnc; 1288 data->wps = conf->wps; 1289 data->pwd_group = conf->pwd_group; 1290 data->server_id = conf->server_id; 1291 if (conf->eap_req_id_text) { 1292 data->eap_req_id_text = os_malloc(conf->eap_req_id_text_len); 1293 if (data->eap_req_id_text) { 1294 os_memcpy(data->eap_req_id_text, conf->eap_req_id_text, 1295 conf->eap_req_id_text_len); 1296 data->eap_req_id_text_len = conf->eap_req_id_text_len; 1297 } 1298 } 1299 1300 #ifdef CONFIG_RADIUS_TEST 1301 if (conf->dump_msk_file) 1302 data->dump_msk_file = os_strdup(conf->dump_msk_file); 1303 #endif /* CONFIG_RADIUS_TEST */ 1304 1305 data->clients = radius_server_read_clients(conf->client_file, 1306 conf->ipv6); 1307 if (data->clients == NULL) { 1308 printf("No RADIUS clients configured.\n"); 1309 radius_server_deinit(data); 1310 return NULL; 1311 } 1312 1313 #ifdef CONFIG_IPV6 1314 if (conf->ipv6) 1315 data->auth_sock = radius_server_open_socket6(conf->auth_port); 1316 else 1317 #endif /* CONFIG_IPV6 */ 1318 data->auth_sock = radius_server_open_socket(conf->auth_port); 1319 if (data->auth_sock < 0) { 1320 printf("Failed to open UDP socket for RADIUS authentication " 1321 "server\n"); 1322 radius_server_deinit(data); 1323 return NULL; 1324 } 1325 if (eloop_register_read_sock(data->auth_sock, 1326 radius_server_receive_auth, 1327 data, NULL)) { 1328 radius_server_deinit(data); 1329 return NULL; 1330 } 1331 1332 return data; 1333 } 1334 1335 1336 /** 1337 * radius_server_deinit - Deinitialize RADIUS server 1338 * @data: RADIUS server context from radius_server_init() 1339 */ 1340 void radius_server_deinit(struct radius_server_data *data) 1341 { 1342 if (data == NULL) 1343 return; 1344 1345 if (data->auth_sock >= 0) { 1346 eloop_unregister_read_sock(data->auth_sock); 1347 close(data->auth_sock); 1348 } 1349 1350 radius_server_free_clients(data, data->clients); 1351 1352 os_free(data->pac_opaque_encr_key); 1353 os_free(data->eap_fast_a_id); 1354 os_free(data->eap_fast_a_id_info); 1355 os_free(data->eap_req_id_text); 1356 #ifdef CONFIG_RADIUS_TEST 1357 os_free(data->dump_msk_file); 1358 #endif /* CONFIG_RADIUS_TEST */ 1359 os_free(data); 1360 } 1361 1362 1363 /** 1364 * radius_server_get_mib - Get RADIUS server MIB information 1365 * @data: RADIUS server context from radius_server_init() 1366 * @buf: Buffer for returning the MIB data in text format 1367 * @buflen: buf length in octets 1368 * Returns: Number of octets written into buf 1369 */ 1370 int radius_server_get_mib(struct radius_server_data *data, char *buf, 1371 size_t buflen) 1372 { 1373 int ret, uptime; 1374 unsigned int idx; 1375 char *end, *pos; 1376 struct os_time now; 1377 struct radius_client *cli; 1378 1379 /* RFC 2619 - RADIUS Authentication Server MIB */ 1380 1381 if (data == NULL || buflen == 0) 1382 return 0; 1383 1384 pos = buf; 1385 end = buf + buflen; 1386 1387 os_get_time(&now); 1388 uptime = (now.sec - data->start_time.sec) * 100 + 1389 ((now.usec - data->start_time.usec) / 10000) % 100; 1390 ret = os_snprintf(pos, end - pos, 1391 "RADIUS-AUTH-SERVER-MIB\n" 1392 "radiusAuthServIdent=hostapd\n" 1393 "radiusAuthServUpTime=%d\n" 1394 "radiusAuthServResetTime=0\n" 1395 "radiusAuthServConfigReset=4\n", 1396 uptime); 1397 if (ret < 0 || ret >= end - pos) { 1398 *pos = '\0'; 1399 return pos - buf; 1400 } 1401 pos += ret; 1402 1403 ret = os_snprintf(pos, end - pos, 1404 "radiusAuthServTotalAccessRequests=%u\n" 1405 "radiusAuthServTotalInvalidRequests=%u\n" 1406 "radiusAuthServTotalDupAccessRequests=%u\n" 1407 "radiusAuthServTotalAccessAccepts=%u\n" 1408 "radiusAuthServTotalAccessRejects=%u\n" 1409 "radiusAuthServTotalAccessChallenges=%u\n" 1410 "radiusAuthServTotalMalformedAccessRequests=%u\n" 1411 "radiusAuthServTotalBadAuthenticators=%u\n" 1412 "radiusAuthServTotalPacketsDropped=%u\n" 1413 "radiusAuthServTotalUnknownTypes=%u\n", 1414 data->counters.access_requests, 1415 data->counters.invalid_requests, 1416 data->counters.dup_access_requests, 1417 data->counters.access_accepts, 1418 data->counters.access_rejects, 1419 data->counters.access_challenges, 1420 data->counters.malformed_access_requests, 1421 data->counters.bad_authenticators, 1422 data->counters.packets_dropped, 1423 data->counters.unknown_types); 1424 if (ret < 0 || ret >= end - pos) { 1425 *pos = '\0'; 1426 return pos - buf; 1427 } 1428 pos += ret; 1429 1430 for (cli = data->clients, idx = 0; cli; cli = cli->next, idx++) { 1431 char abuf[50], mbuf[50]; 1432 #ifdef CONFIG_IPV6 1433 if (data->ipv6) { 1434 if (inet_ntop(AF_INET6, &cli->addr6, abuf, 1435 sizeof(abuf)) == NULL) 1436 abuf[0] = '\0'; 1437 if (inet_ntop(AF_INET6, &cli->mask6, abuf, 1438 sizeof(mbuf)) == NULL) 1439 mbuf[0] = '\0'; 1440 } 1441 #endif /* CONFIG_IPV6 */ 1442 if (!data->ipv6) { 1443 os_strlcpy(abuf, inet_ntoa(cli->addr), sizeof(abuf)); 1444 os_strlcpy(mbuf, inet_ntoa(cli->mask), sizeof(mbuf)); 1445 } 1446 1447 ret = os_snprintf(pos, end - pos, 1448 "radiusAuthClientIndex=%u\n" 1449 "radiusAuthClientAddress=%s/%s\n" 1450 "radiusAuthServAccessRequests=%u\n" 1451 "radiusAuthServDupAccessRequests=%u\n" 1452 "radiusAuthServAccessAccepts=%u\n" 1453 "radiusAuthServAccessRejects=%u\n" 1454 "radiusAuthServAccessChallenges=%u\n" 1455 "radiusAuthServMalformedAccessRequests=%u\n" 1456 "radiusAuthServBadAuthenticators=%u\n" 1457 "radiusAuthServPacketsDropped=%u\n" 1458 "radiusAuthServUnknownTypes=%u\n", 1459 idx, 1460 abuf, mbuf, 1461 cli->counters.access_requests, 1462 cli->counters.dup_access_requests, 1463 cli->counters.access_accepts, 1464 cli->counters.access_rejects, 1465 cli->counters.access_challenges, 1466 cli->counters.malformed_access_requests, 1467 cli->counters.bad_authenticators, 1468 cli->counters.packets_dropped, 1469 cli->counters.unknown_types); 1470 if (ret < 0 || ret >= end - pos) { 1471 *pos = '\0'; 1472 return pos - buf; 1473 } 1474 pos += ret; 1475 } 1476 1477 return pos - buf; 1478 } 1479 1480 1481 static int radius_server_get_eap_user(void *ctx, const u8 *identity, 1482 size_t identity_len, int phase2, 1483 struct eap_user *user) 1484 { 1485 struct radius_session *sess = ctx; 1486 struct radius_server_data *data = sess->server; 1487 1488 return data->get_eap_user(data->conf_ctx, identity, identity_len, 1489 phase2, user); 1490 } 1491 1492 1493 static const char * radius_server_get_eap_req_id_text(void *ctx, size_t *len) 1494 { 1495 struct radius_session *sess = ctx; 1496 struct radius_server_data *data = sess->server; 1497 *len = data->eap_req_id_text_len; 1498 return data->eap_req_id_text; 1499 } 1500 1501 1502 static struct eapol_callbacks radius_server_eapol_cb = 1503 { 1504 .get_eap_user = radius_server_get_eap_user, 1505 .get_eap_req_id_text = radius_server_get_eap_req_id_text, 1506 }; 1507 1508 1509 /** 1510 * radius_server_eap_pending_cb - Pending EAP data notification 1511 * @data: RADIUS server context from radius_server_init() 1512 * @ctx: Pending EAP context pointer 1513 * 1514 * This function is used to notify EAP server module that a pending operation 1515 * has been completed and processing of the EAP session can proceed. 1516 */ 1517 void radius_server_eap_pending_cb(struct radius_server_data *data, void *ctx) 1518 { 1519 struct radius_client *cli; 1520 struct radius_session *s, *sess = NULL; 1521 struct radius_msg *msg; 1522 1523 if (data == NULL) 1524 return; 1525 1526 for (cli = data->clients; cli; cli = cli->next) { 1527 for (s = cli->sessions; s; s = s->next) { 1528 if (s->eap == ctx && s->last_msg) { 1529 sess = s; 1530 break; 1531 } 1532 if (sess) 1533 break; 1534 } 1535 if (sess) 1536 break; 1537 } 1538 1539 if (sess == NULL) { 1540 RADIUS_DEBUG("No session matched callback ctx"); 1541 return; 1542 } 1543 1544 msg = sess->last_msg; 1545 sess->last_msg = NULL; 1546 eap_sm_pending_cb(sess->eap); 1547 if (radius_server_request(data, msg, 1548 (struct sockaddr *) &sess->last_from, 1549 sess->last_fromlen, cli, 1550 sess->last_from_addr, 1551 sess->last_from_port, sess) == -2) 1552 return; /* msg was stored with the session */ 1553 1554 radius_msg_free(msg); 1555 } 1556
