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