1 /* 2 * RADIUS authentication server 3 * Copyright (c) 2005-2009, 2011, Jouni Malinen <j@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_reltime 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 #define RADIUS_DEBUG(args...) \ 302 wpa_printf(MSG_DEBUG, "RADIUS SRV: " args) 303 #define RADIUS_ERROR(args...) \ 304 wpa_printf(MSG_ERROR, "RADIUS SRV: " args) 305 #define RADIUS_DUMP(args...) \ 306 wpa_hexdump(MSG_MSGDUMP, "RADIUS SRV: " args) 307 #define RADIUS_DUMP_ASCII(args...) \ 308 wpa_hexdump_ascii(MSG_MSGDUMP, "RADIUS SRV: " args) 309 310 311 static void radius_server_session_timeout(void *eloop_ctx, void *timeout_ctx); 312 static void radius_server_session_remove_timeout(void *eloop_ctx, 313 void *timeout_ctx); 314 315 316 static struct radius_client * 317 radius_server_get_client(struct radius_server_data *data, struct in_addr *addr, 318 int ipv6) 319 { 320 struct radius_client *client = data->clients; 321 322 while (client) { 323 #ifdef CONFIG_IPV6 324 if (ipv6) { 325 struct in6_addr *addr6; 326 int i; 327 328 addr6 = (struct in6_addr *) addr; 329 for (i = 0; i < 16; i++) { 330 if ((addr6->s6_addr[i] & 331 client->mask6.s6_addr[i]) != 332 (client->addr6.s6_addr[i] & 333 client->mask6.s6_addr[i])) { 334 i = 17; 335 break; 336 } 337 } 338 if (i == 16) { 339 break; 340 } 341 } 342 #endif /* CONFIG_IPV6 */ 343 if (!ipv6 && (client->addr.s_addr & client->mask.s_addr) == 344 (addr->s_addr & client->mask.s_addr)) { 345 break; 346 } 347 348 client = client->next; 349 } 350 351 return client; 352 } 353 354 355 static struct radius_session * 356 radius_server_get_session(struct radius_client *client, unsigned int sess_id) 357 { 358 struct radius_session *sess = client->sessions; 359 360 while (sess) { 361 if (sess->sess_id == sess_id) { 362 break; 363 } 364 sess = sess->next; 365 } 366 367 return sess; 368 } 369 370 371 static void radius_server_session_free(struct radius_server_data *data, 372 struct radius_session *sess) 373 { 374 eloop_cancel_timeout(radius_server_session_timeout, data, sess); 375 eloop_cancel_timeout(radius_server_session_remove_timeout, data, sess); 376 eap_server_sm_deinit(sess->eap); 377 radius_msg_free(sess->last_msg); 378 os_free(sess->last_from_addr); 379 radius_msg_free(sess->last_reply); 380 os_free(sess); 381 data->num_sess--; 382 } 383 384 385 static void radius_server_session_remove(struct radius_server_data *data, 386 struct radius_session *sess) 387 { 388 struct radius_client *client = sess->client; 389 struct radius_session *session, *prev; 390 391 eloop_cancel_timeout(radius_server_session_remove_timeout, data, sess); 392 393 prev = NULL; 394 session = client->sessions; 395 while (session) { 396 if (session == sess) { 397 if (prev == NULL) { 398 client->sessions = sess->next; 399 } else { 400 prev->next = sess->next; 401 } 402 radius_server_session_free(data, sess); 403 break; 404 } 405 prev = session; 406 session = session->next; 407 } 408 } 409 410 411 static void radius_server_session_remove_timeout(void *eloop_ctx, 412 void *timeout_ctx) 413 { 414 struct radius_server_data *data = eloop_ctx; 415 struct radius_session *sess = timeout_ctx; 416 RADIUS_DEBUG("Removing completed session 0x%x", sess->sess_id); 417 radius_server_session_remove(data, sess); 418 } 419 420 421 static void radius_server_session_timeout(void *eloop_ctx, void *timeout_ctx) 422 { 423 struct radius_server_data *data = eloop_ctx; 424 struct radius_session *sess = timeout_ctx; 425 426 RADIUS_DEBUG("Timing out authentication session 0x%x", sess->sess_id); 427 radius_server_session_remove(data, sess); 428 } 429 430 431 static struct radius_session * 432 radius_server_new_session(struct radius_server_data *data, 433 struct radius_client *client) 434 { 435 struct radius_session *sess; 436 437 if (data->num_sess >= RADIUS_MAX_SESSION) { 438 RADIUS_DEBUG("Maximum number of existing session - no room " 439 "for a new session"); 440 return NULL; 441 } 442 443 sess = os_zalloc(sizeof(*sess)); 444 if (sess == NULL) 445 return NULL; 446 447 sess->server = data; 448 sess->client = client; 449 sess->sess_id = data->next_sess_id++; 450 sess->next = client->sessions; 451 client->sessions = sess; 452 eloop_register_timeout(RADIUS_SESSION_TIMEOUT, 0, 453 radius_server_session_timeout, data, sess); 454 data->num_sess++; 455 return sess; 456 } 457 458 459 static struct radius_session * 460 radius_server_get_new_session(struct radius_server_data *data, 461 struct radius_client *client, 462 struct radius_msg *msg) 463 { 464 u8 *user; 465 size_t user_len; 466 int res; 467 struct radius_session *sess; 468 struct eap_config eap_conf; 469 470 RADIUS_DEBUG("Creating a new session"); 471 472 user = os_malloc(256); 473 if (user == NULL) { 474 return NULL; 475 } 476 res = radius_msg_get_attr(msg, RADIUS_ATTR_USER_NAME, user, 256); 477 if (res < 0 || res > 256) { 478 RADIUS_DEBUG("Could not get User-Name"); 479 os_free(user); 480 return NULL; 481 } 482 user_len = res; 483 RADIUS_DUMP_ASCII("User-Name", user, user_len); 484 485 res = data->get_eap_user(data->conf_ctx, user, user_len, 0, NULL); 486 os_free(user); 487 488 if (res == 0) { 489 RADIUS_DEBUG("Matching user entry found"); 490 sess = radius_server_new_session(data, client); 491 if (sess == NULL) { 492 RADIUS_DEBUG("Failed to create a new session"); 493 return NULL; 494 } 495 } else { 496 RADIUS_DEBUG("User-Name not found from user database"); 497 return NULL; 498 } 499 500 os_memset(&eap_conf, 0, sizeof(eap_conf)); 501 eap_conf.ssl_ctx = data->ssl_ctx; 502 eap_conf.msg_ctx = data->msg_ctx; 503 eap_conf.eap_sim_db_priv = data->eap_sim_db_priv; 504 eap_conf.backend_auth = TRUE; 505 eap_conf.eap_server = 1; 506 eap_conf.pac_opaque_encr_key = data->pac_opaque_encr_key; 507 eap_conf.eap_fast_a_id = data->eap_fast_a_id; 508 eap_conf.eap_fast_a_id_len = data->eap_fast_a_id_len; 509 eap_conf.eap_fast_a_id_info = data->eap_fast_a_id_info; 510 eap_conf.eap_fast_prov = data->eap_fast_prov; 511 eap_conf.pac_key_lifetime = data->pac_key_lifetime; 512 eap_conf.pac_key_refresh_time = data->pac_key_refresh_time; 513 eap_conf.eap_sim_aka_result_ind = data->eap_sim_aka_result_ind; 514 eap_conf.tnc = data->tnc; 515 eap_conf.wps = data->wps; 516 eap_conf.pwd_group = data->pwd_group; 517 eap_conf.server_id = (const u8 *) data->server_id; 518 eap_conf.server_id_len = os_strlen(data->server_id); 519 sess->eap = eap_server_sm_init(sess, &radius_server_eapol_cb, 520 &eap_conf); 521 if (sess->eap == NULL) { 522 RADIUS_DEBUG("Failed to initialize EAP state machine for the " 523 "new session"); 524 radius_server_session_free(data, sess); 525 return NULL; 526 } 527 sess->eap_if = eap_get_interface(sess->eap); 528 sess->eap_if->eapRestart = TRUE; 529 sess->eap_if->portEnabled = TRUE; 530 531 RADIUS_DEBUG("New session 0x%x initialized", sess->sess_id); 532 533 return sess; 534 } 535 536 537 static struct radius_msg * 538 radius_server_encapsulate_eap(struct radius_server_data *data, 539 struct radius_client *client, 540 struct radius_session *sess, 541 struct radius_msg *request) 542 { 543 struct radius_msg *msg; 544 int code; 545 unsigned int sess_id; 546 struct radius_hdr *hdr = radius_msg_get_hdr(request); 547 548 if (sess->eap_if->eapFail) { 549 sess->eap_if->eapFail = FALSE; 550 code = RADIUS_CODE_ACCESS_REJECT; 551 } else if (sess->eap_if->eapSuccess) { 552 sess->eap_if->eapSuccess = FALSE; 553 code = RADIUS_CODE_ACCESS_ACCEPT; 554 } else { 555 sess->eap_if->eapReq = FALSE; 556 code = RADIUS_CODE_ACCESS_CHALLENGE; 557 } 558 559 msg = radius_msg_new(code, hdr->identifier); 560 if (msg == NULL) { 561 RADIUS_DEBUG("Failed to allocate reply message"); 562 return NULL; 563 } 564 565 sess_id = htonl(sess->sess_id); 566 if (code == RADIUS_CODE_ACCESS_CHALLENGE && 567 !radius_msg_add_attr(msg, RADIUS_ATTR_STATE, 568 (u8 *) &sess_id, sizeof(sess_id))) { 569 RADIUS_DEBUG("Failed to add State attribute"); 570 } 571 572 if (sess->eap_if->eapReqData && 573 !radius_msg_add_eap(msg, wpabuf_head(sess->eap_if->eapReqData), 574 wpabuf_len(sess->eap_if->eapReqData))) { 575 RADIUS_DEBUG("Failed to add EAP-Message attribute"); 576 } 577 578 if (code == RADIUS_CODE_ACCESS_ACCEPT && sess->eap_if->eapKeyData) { 579 int len; 580 #ifdef CONFIG_RADIUS_TEST 581 if (data->dump_msk_file) { 582 FILE *f; 583 char buf[2 * 64 + 1]; 584 f = fopen(data->dump_msk_file, "a"); 585 if (f) { 586 len = sess->eap_if->eapKeyDataLen; 587 if (len > 64) 588 len = 64; 589 len = wpa_snprintf_hex( 590 buf, sizeof(buf), 591 sess->eap_if->eapKeyData, len); 592 buf[len] = '\0'; 593 fprintf(f, "%s\n", buf); 594 fclose(f); 595 } 596 } 597 #endif /* CONFIG_RADIUS_TEST */ 598 if (sess->eap_if->eapKeyDataLen > 64) { 599 len = 32; 600 } else { 601 len = sess->eap_if->eapKeyDataLen / 2; 602 } 603 if (!radius_msg_add_mppe_keys(msg, hdr->authenticator, 604 (u8 *) client->shared_secret, 605 client->shared_secret_len, 606 sess->eap_if->eapKeyData + len, 607 len, sess->eap_if->eapKeyData, 608 len)) { 609 RADIUS_DEBUG("Failed to add MPPE key attributes"); 610 } 611 } 612 613 if (radius_msg_copy_attr(msg, request, RADIUS_ATTR_PROXY_STATE) < 0) { 614 RADIUS_DEBUG("Failed to copy Proxy-State attribute(s)"); 615 radius_msg_free(msg); 616 return NULL; 617 } 618 619 if (radius_msg_finish_srv(msg, (u8 *) client->shared_secret, 620 client->shared_secret_len, 621 hdr->authenticator) < 0) { 622 RADIUS_DEBUG("Failed to add Message-Authenticator attribute"); 623 } 624 625 return msg; 626 } 627 628 629 static int radius_server_reject(struct radius_server_data *data, 630 struct radius_client *client, 631 struct radius_msg *request, 632 struct sockaddr *from, socklen_t fromlen, 633 const char *from_addr, int from_port) 634 { 635 struct radius_msg *msg; 636 int ret = 0; 637 struct eap_hdr eapfail; 638 struct wpabuf *buf; 639 struct radius_hdr *hdr = radius_msg_get_hdr(request); 640 641 RADIUS_DEBUG("Reject invalid request from %s:%d", 642 from_addr, from_port); 643 644 msg = radius_msg_new(RADIUS_CODE_ACCESS_REJECT, hdr->identifier); 645 if (msg == NULL) { 646 return -1; 647 } 648 649 os_memset(&eapfail, 0, sizeof(eapfail)); 650 eapfail.code = EAP_CODE_FAILURE; 651 eapfail.identifier = 0; 652 eapfail.length = host_to_be16(sizeof(eapfail)); 653 654 if (!radius_msg_add_eap(msg, (u8 *) &eapfail, sizeof(eapfail))) { 655 RADIUS_DEBUG("Failed to add EAP-Message attribute"); 656 } 657 658 if (radius_msg_copy_attr(msg, request, RADIUS_ATTR_PROXY_STATE) < 0) { 659 RADIUS_DEBUG("Failed to copy Proxy-State attribute(s)"); 660 radius_msg_free(msg); 661 return -1; 662 } 663 664 if (radius_msg_finish_srv(msg, (u8 *) client->shared_secret, 665 client->shared_secret_len, 666 hdr->authenticator) < 667 0) { 668 RADIUS_DEBUG("Failed to add Message-Authenticator attribute"); 669 } 670 671 if (wpa_debug_level <= MSG_MSGDUMP) { 672 radius_msg_dump(msg); 673 } 674 675 data->counters.access_rejects++; 676 client->counters.access_rejects++; 677 buf = radius_msg_get_buf(msg); 678 if (sendto(data->auth_sock, wpabuf_head(buf), wpabuf_len(buf), 0, 679 (struct sockaddr *) from, sizeof(*from)) < 0) { 680 wpa_printf(MSG_INFO, "sendto[RADIUS SRV]: %s", strerror(errno)); 681 ret = -1; 682 } 683 684 radius_msg_free(msg); 685 686 return ret; 687 } 688 689 690 static int radius_server_request(struct radius_server_data *data, 691 struct radius_msg *msg, 692 struct sockaddr *from, socklen_t fromlen, 693 struct radius_client *client, 694 const char *from_addr, int from_port, 695 struct radius_session *force_sess) 696 { 697 struct wpabuf *eap = NULL; 698 int res, state_included = 0; 699 u8 statebuf[4]; 700 unsigned int state; 701 struct radius_session *sess; 702 struct radius_msg *reply; 703 int is_complete = 0; 704 705 if (force_sess) 706 sess = force_sess; 707 else { 708 res = radius_msg_get_attr(msg, RADIUS_ATTR_STATE, statebuf, 709 sizeof(statebuf)); 710 state_included = res >= 0; 711 if (res == sizeof(statebuf)) { 712 state = WPA_GET_BE32(statebuf); 713 sess = radius_server_get_session(client, state); 714 } else { 715 sess = NULL; 716 } 717 } 718 719 if (sess) { 720 RADIUS_DEBUG("Request for session 0x%x", sess->sess_id); 721 } else if (state_included) { 722 RADIUS_DEBUG("State attribute included but no session found"); 723 radius_server_reject(data, client, msg, from, fromlen, 724 from_addr, from_port); 725 return -1; 726 } else { 727 sess = radius_server_get_new_session(data, client, msg); 728 if (sess == NULL) { 729 RADIUS_DEBUG("Could not create a new session"); 730 radius_server_reject(data, client, msg, from, fromlen, 731 from_addr, from_port); 732 return -1; 733 } 734 } 735 736 if (sess->last_from_port == from_port && 737 sess->last_identifier == radius_msg_get_hdr(msg)->identifier && 738 os_memcmp(sess->last_authenticator, 739 radius_msg_get_hdr(msg)->authenticator, 16) == 0) { 740 RADIUS_DEBUG("Duplicate message from %s", from_addr); 741 data->counters.dup_access_requests++; 742 client->counters.dup_access_requests++; 743 744 if (sess->last_reply) { 745 struct wpabuf *buf; 746 buf = radius_msg_get_buf(sess->last_reply); 747 res = sendto(data->auth_sock, wpabuf_head(buf), 748 wpabuf_len(buf), 0, 749 (struct sockaddr *) from, fromlen); 750 if (res < 0) { 751 wpa_printf(MSG_INFO, "sendto[RADIUS SRV]: %s", 752 strerror(errno)); 753 } 754 return 0; 755 } 756 757 RADIUS_DEBUG("No previous reply available for duplicate " 758 "message"); 759 return -1; 760 } 761 762 eap = radius_msg_get_eap(msg); 763 if (eap == NULL) { 764 RADIUS_DEBUG("No EAP-Message in RADIUS packet from %s", 765 from_addr); 766 data->counters.packets_dropped++; 767 client->counters.packets_dropped++; 768 return -1; 769 } 770 771 RADIUS_DUMP("Received EAP data", wpabuf_head(eap), wpabuf_len(eap)); 772 773 /* FIX: if Code is Request, Success, or Failure, send Access-Reject; 774 * RFC3579 Sect. 2.6.2. 775 * Include EAP-Response/Nak with no preferred method if 776 * code == request. 777 * If code is not 1-4, discard the packet silently. 778 * Or is this already done by the EAP state machine? */ 779 780 wpabuf_free(sess->eap_if->eapRespData); 781 sess->eap_if->eapRespData = eap; 782 sess->eap_if->eapResp = TRUE; 783 eap_server_sm_step(sess->eap); 784 785 if ((sess->eap_if->eapReq || sess->eap_if->eapSuccess || 786 sess->eap_if->eapFail) && sess->eap_if->eapReqData) { 787 RADIUS_DUMP("EAP data from the state machine", 788 wpabuf_head(sess->eap_if->eapReqData), 789 wpabuf_len(sess->eap_if->eapReqData)); 790 } else if (sess->eap_if->eapFail) { 791 RADIUS_DEBUG("No EAP data from the state machine, but eapFail " 792 "set"); 793 } else if (eap_sm_method_pending(sess->eap)) { 794 radius_msg_free(sess->last_msg); 795 sess->last_msg = msg; 796 sess->last_from_port = from_port; 797 os_free(sess->last_from_addr); 798 sess->last_from_addr = os_strdup(from_addr); 799 sess->last_fromlen = fromlen; 800 os_memcpy(&sess->last_from, from, fromlen); 801 return -2; 802 } else { 803 RADIUS_DEBUG("No EAP data from the state machine - ignore this" 804 " Access-Request silently (assuming it was a " 805 "duplicate)"); 806 data->counters.packets_dropped++; 807 client->counters.packets_dropped++; 808 return -1; 809 } 810 811 if (sess->eap_if->eapSuccess || sess->eap_if->eapFail) 812 is_complete = 1; 813 814 reply = radius_server_encapsulate_eap(data, client, sess, msg); 815 816 if (reply) { 817 struct wpabuf *buf; 818 struct radius_hdr *hdr; 819 820 RADIUS_DEBUG("Reply to %s:%d", from_addr, from_port); 821 if (wpa_debug_level <= MSG_MSGDUMP) { 822 radius_msg_dump(reply); 823 } 824 825 switch (radius_msg_get_hdr(reply)->code) { 826 case RADIUS_CODE_ACCESS_ACCEPT: 827 data->counters.access_accepts++; 828 client->counters.access_accepts++; 829 break; 830 case RADIUS_CODE_ACCESS_REJECT: 831 data->counters.access_rejects++; 832 client->counters.access_rejects++; 833 break; 834 case RADIUS_CODE_ACCESS_CHALLENGE: 835 data->counters.access_challenges++; 836 client->counters.access_challenges++; 837 break; 838 } 839 buf = radius_msg_get_buf(reply); 840 res = sendto(data->auth_sock, wpabuf_head(buf), 841 wpabuf_len(buf), 0, 842 (struct sockaddr *) from, fromlen); 843 if (res < 0) { 844 wpa_printf(MSG_INFO, "sendto[RADIUS SRV]: %s", 845 strerror(errno)); 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 wpa_printf(MSG_INFO, "recvfrom[radius_server]: %s", 901 strerror(errno)); 902 goto fail; 903 } 904 905 #ifdef CONFIG_IPV6 906 if (data->ipv6) { 907 if (inet_ntop(AF_INET6, &from.sin6.sin6_addr, abuf, 908 sizeof(abuf)) == NULL) 909 abuf[0] = '\0'; 910 from_port = ntohs(from.sin6.sin6_port); 911 RADIUS_DEBUG("Received %d bytes from %s:%d", 912 len, abuf, from_port); 913 914 client = radius_server_get_client(data, 915 (struct in_addr *) 916 &from.sin6.sin6_addr, 1); 917 } 918 #endif /* CONFIG_IPV6 */ 919 920 if (!data->ipv6) { 921 os_strlcpy(abuf, inet_ntoa(from.sin.sin_addr), sizeof(abuf)); 922 from_port = ntohs(from.sin.sin_port); 923 RADIUS_DEBUG("Received %d bytes from %s:%d", 924 len, abuf, from_port); 925 926 client = radius_server_get_client(data, &from.sin.sin_addr, 0); 927 } 928 929 RADIUS_DUMP("Received data", buf, len); 930 931 if (client == NULL) { 932 RADIUS_DEBUG("Unknown client %s - packet ignored", abuf); 933 data->counters.invalid_requests++; 934 goto fail; 935 } 936 937 msg = radius_msg_parse(buf, len); 938 if (msg == NULL) { 939 RADIUS_DEBUG("Parsing incoming RADIUS frame failed"); 940 data->counters.malformed_access_requests++; 941 client->counters.malformed_access_requests++; 942 goto fail; 943 } 944 945 os_free(buf); 946 buf = NULL; 947 948 if (wpa_debug_level <= MSG_MSGDUMP) { 949 radius_msg_dump(msg); 950 } 951 952 if (radius_msg_get_hdr(msg)->code != RADIUS_CODE_ACCESS_REQUEST) { 953 RADIUS_DEBUG("Unexpected RADIUS code %d", 954 radius_msg_get_hdr(msg)->code); 955 data->counters.unknown_types++; 956 client->counters.unknown_types++; 957 goto fail; 958 } 959 960 data->counters.access_requests++; 961 client->counters.access_requests++; 962 963 if (radius_msg_verify_msg_auth(msg, (u8 *) client->shared_secret, 964 client->shared_secret_len, NULL)) { 965 RADIUS_DEBUG("Invalid Message-Authenticator from %s", abuf); 966 data->counters.bad_authenticators++; 967 client->counters.bad_authenticators++; 968 goto fail; 969 } 970 971 if (radius_server_request(data, msg, (struct sockaddr *) &from, 972 fromlen, client, abuf, from_port, NULL) == 973 -2) 974 return; /* msg was stored with the session */ 975 976 fail: 977 radius_msg_free(msg); 978 os_free(buf); 979 } 980 981 982 static int radius_server_disable_pmtu_discovery(int s) 983 { 984 int r = -1; 985 #if defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DONT) 986 /* Turn off Path MTU discovery on IPv4/UDP sockets. */ 987 int action = IP_PMTUDISC_DONT; 988 r = setsockopt(s, IPPROTO_IP, IP_MTU_DISCOVER, &action, 989 sizeof(action)); 990 if (r == -1) 991 wpa_printf(MSG_ERROR, "Failed to set IP_MTU_DISCOVER: " 992 "%s", strerror(errno)); 993 #endif 994 return r; 995 } 996 997 998 static int radius_server_open_socket(int port) 999 { 1000 int s; 1001 struct sockaddr_in addr; 1002 1003 s = socket(PF_INET, SOCK_DGRAM, 0); 1004 if (s < 0) { 1005 wpa_printf(MSG_INFO, "RADIUS: socket: %s", strerror(errno)); 1006 return -1; 1007 } 1008 1009 radius_server_disable_pmtu_discovery(s); 1010 1011 os_memset(&addr, 0, sizeof(addr)); 1012 addr.sin_family = AF_INET; 1013 addr.sin_port = htons(port); 1014 if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) { 1015 wpa_printf(MSG_INFO, "RADIUS: bind: %s", strerror(errno)); 1016 close(s); 1017 return -1; 1018 } 1019 1020 return s; 1021 } 1022 1023 1024 #ifdef CONFIG_IPV6 1025 static int radius_server_open_socket6(int port) 1026 { 1027 int s; 1028 struct sockaddr_in6 addr; 1029 1030 s = socket(PF_INET6, SOCK_DGRAM, 0); 1031 if (s < 0) { 1032 wpa_printf(MSG_INFO, "RADIUS: socket[IPv6]: %s", 1033 strerror(errno)); 1034 return -1; 1035 } 1036 1037 os_memset(&addr, 0, sizeof(addr)); 1038 addr.sin6_family = AF_INET6; 1039 os_memcpy(&addr.sin6_addr, &in6addr_any, sizeof(in6addr_any)); 1040 addr.sin6_port = htons(port); 1041 if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) { 1042 wpa_printf(MSG_INFO, "RADIUS: bind: %s", strerror(errno)); 1043 close(s); 1044 return -1; 1045 } 1046 1047 return s; 1048 } 1049 #endif /* CONFIG_IPV6 */ 1050 1051 1052 static void radius_server_free_sessions(struct radius_server_data *data, 1053 struct radius_session *sessions) 1054 { 1055 struct radius_session *session, *prev; 1056 1057 session = sessions; 1058 while (session) { 1059 prev = session; 1060 session = session->next; 1061 radius_server_session_free(data, prev); 1062 } 1063 } 1064 1065 1066 static void radius_server_free_clients(struct radius_server_data *data, 1067 struct radius_client *clients) 1068 { 1069 struct radius_client *client, *prev; 1070 1071 client = clients; 1072 while (client) { 1073 prev = client; 1074 client = client->next; 1075 1076 radius_server_free_sessions(data, prev->sessions); 1077 os_free(prev->shared_secret); 1078 os_free(prev); 1079 } 1080 } 1081 1082 1083 static struct radius_client * 1084 radius_server_read_clients(const char *client_file, int ipv6) 1085 { 1086 FILE *f; 1087 const int buf_size = 1024; 1088 char *buf, *pos; 1089 struct radius_client *clients, *tail, *entry; 1090 int line = 0, mask, failed = 0, i; 1091 struct in_addr addr; 1092 #ifdef CONFIG_IPV6 1093 struct in6_addr addr6; 1094 #endif /* CONFIG_IPV6 */ 1095 unsigned int val; 1096 1097 f = fopen(client_file, "r"); 1098 if (f == NULL) { 1099 RADIUS_ERROR("Could not open client file '%s'", client_file); 1100 return NULL; 1101 } 1102 1103 buf = os_malloc(buf_size); 1104 if (buf == NULL) { 1105 fclose(f); 1106 return NULL; 1107 } 1108 1109 clients = tail = NULL; 1110 while (fgets(buf, buf_size, f)) { 1111 /* Configuration file format: 1112 * 192.168.1.0/24 secret 1113 * 192.168.1.2 secret 1114 * fe80::211:22ff:fe33:4455/64 secretipv6 1115 */ 1116 line++; 1117 buf[buf_size - 1] = '\0'; 1118 pos = buf; 1119 while (*pos != '\0' && *pos != '\n') 1120 pos++; 1121 if (*pos == '\n') 1122 *pos = '\0'; 1123 if (*buf == '\0' || *buf == '#') 1124 continue; 1125 1126 pos = buf; 1127 while ((*pos >= '0' && *pos <= '9') || *pos == '.' || 1128 (*pos >= 'a' && *pos <= 'f') || *pos == ':' || 1129 (*pos >= 'A' && *pos <= 'F')) { 1130 pos++; 1131 } 1132 1133 if (*pos == '\0') { 1134 failed = 1; 1135 break; 1136 } 1137 1138 if (*pos == '/') { 1139 char *end; 1140 *pos++ = '\0'; 1141 mask = strtol(pos, &end, 10); 1142 if ((pos == end) || 1143 (mask < 0 || mask > (ipv6 ? 128 : 32))) { 1144 failed = 1; 1145 break; 1146 } 1147 pos = end; 1148 } else { 1149 mask = ipv6 ? 128 : 32; 1150 *pos++ = '\0'; 1151 } 1152 1153 if (!ipv6 && inet_aton(buf, &addr) == 0) { 1154 failed = 1; 1155 break; 1156 } 1157 #ifdef CONFIG_IPV6 1158 if (ipv6 && inet_pton(AF_INET6, buf, &addr6) <= 0) { 1159 if (inet_pton(AF_INET, buf, &addr) <= 0) { 1160 failed = 1; 1161 break; 1162 } 1163 /* Convert IPv4 address to IPv6 */ 1164 if (mask <= 32) 1165 mask += (128 - 32); 1166 os_memset(addr6.s6_addr, 0, 10); 1167 addr6.s6_addr[10] = 0xff; 1168 addr6.s6_addr[11] = 0xff; 1169 os_memcpy(addr6.s6_addr + 12, (char *) &addr.s_addr, 1170 4); 1171 } 1172 #endif /* CONFIG_IPV6 */ 1173 1174 while (*pos == ' ' || *pos == '\t') { 1175 pos++; 1176 } 1177 1178 if (*pos == '\0') { 1179 failed = 1; 1180 break; 1181 } 1182 1183 entry = os_zalloc(sizeof(*entry)); 1184 if (entry == NULL) { 1185 failed = 1; 1186 break; 1187 } 1188 entry->shared_secret = os_strdup(pos); 1189 if (entry->shared_secret == NULL) { 1190 failed = 1; 1191 os_free(entry); 1192 break; 1193 } 1194 entry->shared_secret_len = os_strlen(entry->shared_secret); 1195 entry->addr.s_addr = addr.s_addr; 1196 if (!ipv6) { 1197 val = 0; 1198 for (i = 0; i < mask; i++) 1199 val |= 1 << (31 - i); 1200 entry->mask.s_addr = htonl(val); 1201 } 1202 #ifdef CONFIG_IPV6 1203 if (ipv6) { 1204 int offset = mask / 8; 1205 1206 os_memcpy(entry->addr6.s6_addr, addr6.s6_addr, 16); 1207 os_memset(entry->mask6.s6_addr, 0xff, offset); 1208 val = 0; 1209 for (i = 0; i < (mask % 8); i++) 1210 val |= 1 << (7 - i); 1211 if (offset < 16) 1212 entry->mask6.s6_addr[offset] = val; 1213 } 1214 #endif /* CONFIG_IPV6 */ 1215 1216 if (tail == NULL) { 1217 clients = tail = entry; 1218 } else { 1219 tail->next = entry; 1220 tail = entry; 1221 } 1222 } 1223 1224 if (failed) { 1225 RADIUS_ERROR("Invalid line %d in '%s'", line, client_file); 1226 radius_server_free_clients(NULL, clients); 1227 clients = NULL; 1228 } 1229 1230 os_free(buf); 1231 fclose(f); 1232 1233 return clients; 1234 } 1235 1236 1237 /** 1238 * radius_server_init - Initialize RADIUS server 1239 * @conf: Configuration for the RADIUS server 1240 * Returns: Pointer to private RADIUS server context or %NULL on failure 1241 * 1242 * This initializes a RADIUS server instance and returns a context pointer that 1243 * will be used in other calls to the RADIUS server module. The server can be 1244 * deinitialize by calling radius_server_deinit(). 1245 */ 1246 struct radius_server_data * 1247 radius_server_init(struct radius_server_conf *conf) 1248 { 1249 struct radius_server_data *data; 1250 1251 #ifndef CONFIG_IPV6 1252 if (conf->ipv6) { 1253 wpa_printf(MSG_ERROR, "RADIUS server compiled without IPv6 support"); 1254 return NULL; 1255 } 1256 #endif /* CONFIG_IPV6 */ 1257 1258 data = os_zalloc(sizeof(*data)); 1259 if (data == NULL) 1260 return NULL; 1261 1262 os_get_reltime(&data->start_time); 1263 data->conf_ctx = conf->conf_ctx; 1264 data->eap_sim_db_priv = conf->eap_sim_db_priv; 1265 data->ssl_ctx = conf->ssl_ctx; 1266 data->msg_ctx = conf->msg_ctx; 1267 data->ipv6 = conf->ipv6; 1268 if (conf->pac_opaque_encr_key) { 1269 data->pac_opaque_encr_key = os_malloc(16); 1270 os_memcpy(data->pac_opaque_encr_key, conf->pac_opaque_encr_key, 1271 16); 1272 } 1273 if (conf->eap_fast_a_id) { 1274 data->eap_fast_a_id = os_malloc(conf->eap_fast_a_id_len); 1275 if (data->eap_fast_a_id) { 1276 os_memcpy(data->eap_fast_a_id, conf->eap_fast_a_id, 1277 conf->eap_fast_a_id_len); 1278 data->eap_fast_a_id_len = conf->eap_fast_a_id_len; 1279 } 1280 } 1281 if (conf->eap_fast_a_id_info) 1282 data->eap_fast_a_id_info = os_strdup(conf->eap_fast_a_id_info); 1283 data->eap_fast_prov = conf->eap_fast_prov; 1284 data->pac_key_lifetime = conf->pac_key_lifetime; 1285 data->pac_key_refresh_time = conf->pac_key_refresh_time; 1286 data->get_eap_user = conf->get_eap_user; 1287 data->eap_sim_aka_result_ind = conf->eap_sim_aka_result_ind; 1288 data->tnc = conf->tnc; 1289 data->wps = conf->wps; 1290 data->pwd_group = conf->pwd_group; 1291 data->server_id = conf->server_id; 1292 if (conf->eap_req_id_text) { 1293 data->eap_req_id_text = os_malloc(conf->eap_req_id_text_len); 1294 if (data->eap_req_id_text) { 1295 os_memcpy(data->eap_req_id_text, conf->eap_req_id_text, 1296 conf->eap_req_id_text_len); 1297 data->eap_req_id_text_len = conf->eap_req_id_text_len; 1298 } 1299 } 1300 1301 #ifdef CONFIG_RADIUS_TEST 1302 if (conf->dump_msk_file) 1303 data->dump_msk_file = os_strdup(conf->dump_msk_file); 1304 #endif /* CONFIG_RADIUS_TEST */ 1305 1306 data->clients = radius_server_read_clients(conf->client_file, 1307 conf->ipv6); 1308 if (data->clients == NULL) { 1309 wpa_printf(MSG_ERROR, "No RADIUS clients configured"); 1310 radius_server_deinit(data); 1311 return NULL; 1312 } 1313 1314 #ifdef CONFIG_IPV6 1315 if (conf->ipv6) 1316 data->auth_sock = radius_server_open_socket6(conf->auth_port); 1317 else 1318 #endif /* CONFIG_IPV6 */ 1319 data->auth_sock = radius_server_open_socket(conf->auth_port); 1320 if (data->auth_sock < 0) { 1321 wpa_printf(MSG_ERROR, "Failed to open UDP socket for RADIUS authentication server"); 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_reltime 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_reltime(&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