1 /* 2 * RADIUS authentication server 3 * Copyright (c) 2005-2009, 2011-2014, 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 #ifdef CONFIG_SQLITE 12 #include <sqlite3.h> 13 #endif /* CONFIG_SQLITE */ 14 15 #include "common.h" 16 #include "radius.h" 17 #include "eloop.h" 18 #include "eap_server/eap.h" 19 #include "ap/ap_config.h" 20 #include "crypto/tls.h" 21 #include "radius_server.h" 22 23 /** 24 * RADIUS_SESSION_TIMEOUT - Session timeout in seconds 25 */ 26 #define RADIUS_SESSION_TIMEOUT 60 27 28 /** 29 * RADIUS_MAX_SESSION - Maximum number of active sessions 30 */ 31 #define RADIUS_MAX_SESSION 100 32 33 /** 34 * RADIUS_MAX_MSG_LEN - Maximum message length for incoming RADIUS messages 35 */ 36 #define RADIUS_MAX_MSG_LEN 3000 37 38 static const struct eapol_callbacks radius_server_eapol_cb; 39 40 struct radius_client; 41 struct radius_server_data; 42 43 /** 44 * struct radius_server_counters - RADIUS server statistics counters 45 */ 46 struct radius_server_counters { 47 u32 access_requests; 48 u32 invalid_requests; 49 u32 dup_access_requests; 50 u32 access_accepts; 51 u32 access_rejects; 52 u32 access_challenges; 53 u32 malformed_access_requests; 54 u32 bad_authenticators; 55 u32 packets_dropped; 56 u32 unknown_types; 57 58 u32 acct_requests; 59 u32 invalid_acct_requests; 60 u32 acct_responses; 61 u32 malformed_acct_requests; 62 u32 acct_bad_authenticators; 63 u32 unknown_acct_types; 64 }; 65 66 /** 67 * struct radius_session - Internal RADIUS server data for a session 68 */ 69 struct radius_session { 70 struct radius_session *next; 71 struct radius_client *client; 72 struct radius_server_data *server; 73 unsigned int sess_id; 74 struct eap_sm *eap; 75 struct eap_eapol_interface *eap_if; 76 char *username; /* from User-Name attribute */ 77 char *nas_ip; 78 79 struct radius_msg *last_msg; 80 char *last_from_addr; 81 int last_from_port; 82 struct sockaddr_storage last_from; 83 socklen_t last_fromlen; 84 u8 last_identifier; 85 struct radius_msg *last_reply; 86 u8 last_authenticator[16]; 87 88 unsigned int remediation:1; 89 unsigned int macacl:1; 90 91 struct hostapd_radius_attr *accept_attr; 92 }; 93 94 /** 95 * struct radius_client - Internal RADIUS server data for a client 96 */ 97 struct radius_client { 98 struct radius_client *next; 99 struct in_addr addr; 100 struct in_addr mask; 101 #ifdef CONFIG_IPV6 102 struct in6_addr addr6; 103 struct in6_addr mask6; 104 #endif /* CONFIG_IPV6 */ 105 char *shared_secret; 106 int shared_secret_len; 107 struct radius_session *sessions; 108 struct radius_server_counters counters; 109 }; 110 111 /** 112 * struct radius_server_data - Internal RADIUS server data 113 */ 114 struct radius_server_data { 115 /** 116 * auth_sock - Socket for RADIUS authentication messages 117 */ 118 int auth_sock; 119 120 /** 121 * acct_sock - Socket for RADIUS accounting messages 122 */ 123 int acct_sock; 124 125 /** 126 * clients - List of authorized RADIUS clients 127 */ 128 struct radius_client *clients; 129 130 /** 131 * next_sess_id - Next session identifier 132 */ 133 unsigned int next_sess_id; 134 135 /** 136 * conf_ctx - Context pointer for callbacks 137 * 138 * This is used as the ctx argument in get_eap_user() calls. 139 */ 140 void *conf_ctx; 141 142 /** 143 * num_sess - Number of active sessions 144 */ 145 int num_sess; 146 147 /** 148 * eap_sim_db_priv - EAP-SIM/AKA database context 149 * 150 * This is passed to the EAP-SIM/AKA server implementation as a 151 * callback context. 152 */ 153 void *eap_sim_db_priv; 154 155 /** 156 * ssl_ctx - TLS context 157 * 158 * This is passed to the EAP server implementation as a callback 159 * context for TLS operations. 160 */ 161 void *ssl_ctx; 162 163 /** 164 * pac_opaque_encr_key - PAC-Opaque encryption key for EAP-FAST 165 * 166 * This parameter is used to set a key for EAP-FAST to encrypt the 167 * PAC-Opaque data. It can be set to %NULL if EAP-FAST is not used. If 168 * set, must point to a 16-octet key. 169 */ 170 u8 *pac_opaque_encr_key; 171 172 /** 173 * eap_fast_a_id - EAP-FAST authority identity (A-ID) 174 * 175 * If EAP-FAST is not used, this can be set to %NULL. In theory, this 176 * is a variable length field, but due to some existing implementations 177 * requiring A-ID to be 16 octets in length, it is recommended to use 178 * that length for the field to provide interoperability with deployed 179 * peer implementations. 180 */ 181 u8 *eap_fast_a_id; 182 183 /** 184 * eap_fast_a_id_len - Length of eap_fast_a_id buffer in octets 185 */ 186 size_t eap_fast_a_id_len; 187 188 /** 189 * eap_fast_a_id_info - EAP-FAST authority identifier information 190 * 191 * This A-ID-Info contains a user-friendly name for the A-ID. For 192 * example, this could be the enterprise and server names in 193 * human-readable format. This field is encoded as UTF-8. If EAP-FAST 194 * is not used, this can be set to %NULL. 195 */ 196 char *eap_fast_a_id_info; 197 198 /** 199 * eap_fast_prov - EAP-FAST provisioning modes 200 * 201 * 0 = provisioning disabled, 1 = only anonymous provisioning allowed, 202 * 2 = only authenticated provisioning allowed, 3 = both provisioning 203 * modes allowed. 204 */ 205 int eap_fast_prov; 206 207 /** 208 * pac_key_lifetime - EAP-FAST PAC-Key lifetime in seconds 209 * 210 * This is the hard limit on how long a provisioned PAC-Key can be 211 * used. 212 */ 213 int pac_key_lifetime; 214 215 /** 216 * pac_key_refresh_time - EAP-FAST PAC-Key refresh time in seconds 217 * 218 * This is a soft limit on the PAC-Key. The server will automatically 219 * generate a new PAC-Key when this number of seconds (or fewer) of the 220 * lifetime remains. 221 */ 222 int pac_key_refresh_time; 223 224 /** 225 * eap_sim_aka_result_ind - EAP-SIM/AKA protected success indication 226 * 227 * This controls whether the protected success/failure indication 228 * (AT_RESULT_IND) is used with EAP-SIM and EAP-AKA. 229 */ 230 int eap_sim_aka_result_ind; 231 232 /** 233 * tnc - Trusted Network Connect (TNC) 234 * 235 * This controls whether TNC is enabled and will be required before the 236 * peer is allowed to connect. Note: This is only used with EAP-TTLS 237 * and EAP-FAST. If any other EAP method is enabled, the peer will be 238 * allowed to connect without TNC. 239 */ 240 int tnc; 241 242 /** 243 * pwd_group - The D-H group assigned for EAP-pwd 244 * 245 * If EAP-pwd is not used it can be set to zero. 246 */ 247 u16 pwd_group; 248 249 /** 250 * server_id - Server identity 251 */ 252 const char *server_id; 253 254 /** 255 * erp - Whether EAP Re-authentication Protocol (ERP) is enabled 256 * 257 * This controls whether the authentication server derives ERP key 258 * hierarchy (rRK and rIK) from full EAP authentication and allows 259 * these keys to be used to perform ERP to derive rMSK instead of full 260 * EAP authentication to derive MSK. 261 */ 262 int erp; 263 264 const char *erp_domain; 265 266 struct dl_list erp_keys; /* struct eap_server_erp_key */ 267 268 /** 269 * wps - Wi-Fi Protected Setup context 270 * 271 * If WPS is used with an external RADIUS server (which is quite 272 * unlikely configuration), this is used to provide a pointer to WPS 273 * context data. Normally, this can be set to %NULL. 274 */ 275 struct wps_context *wps; 276 277 /** 278 * ipv6 - Whether to enable IPv6 support in the RADIUS server 279 */ 280 int ipv6; 281 282 /** 283 * start_time - Timestamp of server start 284 */ 285 struct os_reltime start_time; 286 287 /** 288 * counters - Statistics counters for server operations 289 * 290 * These counters are the sum over all clients. 291 */ 292 struct radius_server_counters counters; 293 294 /** 295 * get_eap_user - Callback for fetching EAP user information 296 * @ctx: Context data from conf_ctx 297 * @identity: User identity 298 * @identity_len: identity buffer length in octets 299 * @phase2: Whether this is for Phase 2 identity 300 * @user: Data structure for filling in the user information 301 * Returns: 0 on success, -1 on failure 302 * 303 * This is used to fetch information from user database. The callback 304 * will fill in information about allowed EAP methods and the user 305 * password. The password field will be an allocated copy of the 306 * password data and RADIUS server will free it after use. 307 */ 308 int (*get_eap_user)(void *ctx, const u8 *identity, size_t identity_len, 309 int phase2, struct eap_user *user); 310 311 /** 312 * eap_req_id_text - Optional data for EAP-Request/Identity 313 * 314 * This can be used to configure an optional, displayable message that 315 * will be sent in EAP-Request/Identity. This string can contain an 316 * ASCII-0 character (nul) to separate network infromation per RFC 317 * 4284. The actual string length is explicit provided in 318 * eap_req_id_text_len since nul character will not be used as a string 319 * terminator. 320 */ 321 char *eap_req_id_text; 322 323 /** 324 * eap_req_id_text_len - Length of eap_req_id_text buffer in octets 325 */ 326 size_t eap_req_id_text_len; 327 328 /* 329 * msg_ctx - Context data for wpa_msg() calls 330 */ 331 void *msg_ctx; 332 333 #ifdef CONFIG_RADIUS_TEST 334 char *dump_msk_file; 335 #endif /* CONFIG_RADIUS_TEST */ 336 337 char *subscr_remediation_url; 338 u8 subscr_remediation_method; 339 340 #ifdef CONFIG_SQLITE 341 sqlite3 *db; 342 #endif /* CONFIG_SQLITE */ 343 }; 344 345 346 #define RADIUS_DEBUG(args...) \ 347 wpa_printf(MSG_DEBUG, "RADIUS SRV: " args) 348 #define RADIUS_ERROR(args...) \ 349 wpa_printf(MSG_ERROR, "RADIUS SRV: " args) 350 #define RADIUS_DUMP(args...) \ 351 wpa_hexdump(MSG_MSGDUMP, "RADIUS SRV: " args) 352 #define RADIUS_DUMP_ASCII(args...) \ 353 wpa_hexdump_ascii(MSG_MSGDUMP, "RADIUS SRV: " args) 354 355 356 static void radius_server_session_timeout(void *eloop_ctx, void *timeout_ctx); 357 static void radius_server_session_remove_timeout(void *eloop_ctx, 358 void *timeout_ctx); 359 360 void srv_log(struct radius_session *sess, const char *fmt, ...) 361 PRINTF_FORMAT(2, 3); 362 363 void srv_log(struct radius_session *sess, const char *fmt, ...) 364 { 365 va_list ap; 366 char *buf; 367 int buflen; 368 369 va_start(ap, fmt); 370 buflen = vsnprintf(NULL, 0, fmt, ap) + 1; 371 va_end(ap); 372 373 buf = os_malloc(buflen); 374 if (buf == NULL) 375 return; 376 va_start(ap, fmt); 377 vsnprintf(buf, buflen, fmt, ap); 378 va_end(ap); 379 380 RADIUS_DEBUG("[0x%x %s] %s", sess->sess_id, sess->nas_ip, buf); 381 382 #ifdef CONFIG_SQLITE 383 if (sess->server->db) { 384 char *sql; 385 sql = sqlite3_mprintf("INSERT INTO authlog" 386 "(timestamp,session,nas_ip,username,note)" 387 " VALUES (" 388 "strftime('%%Y-%%m-%%d %%H:%%M:%%f'," 389 "'now'),%u,%Q,%Q,%Q)", 390 sess->sess_id, sess->nas_ip, 391 sess->username, buf); 392 if (sql) { 393 if (sqlite3_exec(sess->server->db, sql, NULL, NULL, 394 NULL) != SQLITE_OK) { 395 RADIUS_ERROR("Failed to add authlog entry into sqlite database: %s", 396 sqlite3_errmsg(sess->server->db)); 397 } 398 sqlite3_free(sql); 399 } 400 } 401 #endif /* CONFIG_SQLITE */ 402 403 os_free(buf); 404 } 405 406 407 static struct radius_client * 408 radius_server_get_client(struct radius_server_data *data, struct in_addr *addr, 409 int ipv6) 410 { 411 struct radius_client *client = data->clients; 412 413 while (client) { 414 #ifdef CONFIG_IPV6 415 if (ipv6) { 416 struct in6_addr *addr6; 417 int i; 418 419 addr6 = (struct in6_addr *) addr; 420 for (i = 0; i < 16; i++) { 421 if ((addr6->s6_addr[i] & 422 client->mask6.s6_addr[i]) != 423 (client->addr6.s6_addr[i] & 424 client->mask6.s6_addr[i])) { 425 i = 17; 426 break; 427 } 428 } 429 if (i == 16) { 430 break; 431 } 432 } 433 #endif /* CONFIG_IPV6 */ 434 if (!ipv6 && (client->addr.s_addr & client->mask.s_addr) == 435 (addr->s_addr & client->mask.s_addr)) { 436 break; 437 } 438 439 client = client->next; 440 } 441 442 return client; 443 } 444 445 446 static struct radius_session * 447 radius_server_get_session(struct radius_client *client, unsigned int sess_id) 448 { 449 struct radius_session *sess = client->sessions; 450 451 while (sess) { 452 if (sess->sess_id == sess_id) { 453 break; 454 } 455 sess = sess->next; 456 } 457 458 return sess; 459 } 460 461 462 static void radius_server_session_free(struct radius_server_data *data, 463 struct radius_session *sess) 464 { 465 eloop_cancel_timeout(radius_server_session_timeout, data, sess); 466 eloop_cancel_timeout(radius_server_session_remove_timeout, data, sess); 467 eap_server_sm_deinit(sess->eap); 468 radius_msg_free(sess->last_msg); 469 os_free(sess->last_from_addr); 470 radius_msg_free(sess->last_reply); 471 os_free(sess->username); 472 os_free(sess->nas_ip); 473 os_free(sess); 474 data->num_sess--; 475 } 476 477 478 static void radius_server_session_remove(struct radius_server_data *data, 479 struct radius_session *sess) 480 { 481 struct radius_client *client = sess->client; 482 struct radius_session *session, *prev; 483 484 eloop_cancel_timeout(radius_server_session_remove_timeout, data, sess); 485 486 prev = NULL; 487 session = client->sessions; 488 while (session) { 489 if (session == sess) { 490 if (prev == NULL) { 491 client->sessions = sess->next; 492 } else { 493 prev->next = sess->next; 494 } 495 radius_server_session_free(data, sess); 496 break; 497 } 498 prev = session; 499 session = session->next; 500 } 501 } 502 503 504 static void radius_server_session_remove_timeout(void *eloop_ctx, 505 void *timeout_ctx) 506 { 507 struct radius_server_data *data = eloop_ctx; 508 struct radius_session *sess = timeout_ctx; 509 RADIUS_DEBUG("Removing completed session 0x%x", sess->sess_id); 510 radius_server_session_remove(data, sess); 511 } 512 513 514 static void radius_server_session_timeout(void *eloop_ctx, void *timeout_ctx) 515 { 516 struct radius_server_data *data = eloop_ctx; 517 struct radius_session *sess = timeout_ctx; 518 519 RADIUS_DEBUG("Timing out authentication session 0x%x", sess->sess_id); 520 radius_server_session_remove(data, sess); 521 } 522 523 524 static struct radius_session * 525 radius_server_new_session(struct radius_server_data *data, 526 struct radius_client *client) 527 { 528 struct radius_session *sess; 529 530 if (data->num_sess >= RADIUS_MAX_SESSION) { 531 RADIUS_DEBUG("Maximum number of existing session - no room " 532 "for a new session"); 533 return NULL; 534 } 535 536 sess = os_zalloc(sizeof(*sess)); 537 if (sess == NULL) 538 return NULL; 539 540 sess->server = data; 541 sess->client = client; 542 sess->sess_id = data->next_sess_id++; 543 sess->next = client->sessions; 544 client->sessions = sess; 545 eloop_register_timeout(RADIUS_SESSION_TIMEOUT, 0, 546 radius_server_session_timeout, data, sess); 547 data->num_sess++; 548 return sess; 549 } 550 551 552 #ifdef CONFIG_TESTING_OPTIONS 553 static void radius_server_testing_options_tls(struct radius_session *sess, 554 const char *tls, 555 struct eap_config *eap_conf) 556 { 557 int test = atoi(tls); 558 559 switch (test) { 560 case 1: 561 srv_log(sess, "TLS test - break VerifyData"); 562 eap_conf->tls_test_flags = TLS_BREAK_VERIFY_DATA; 563 break; 564 case 2: 565 srv_log(sess, "TLS test - break ServerKeyExchange ServerParams hash"); 566 eap_conf->tls_test_flags = TLS_BREAK_SRV_KEY_X_HASH; 567 break; 568 case 3: 569 srv_log(sess, "TLS test - break ServerKeyExchange ServerParams Signature"); 570 eap_conf->tls_test_flags = TLS_BREAK_SRV_KEY_X_SIGNATURE; 571 break; 572 case 4: 573 srv_log(sess, "TLS test - RSA-DHE using a short 511-bit prime"); 574 eap_conf->tls_test_flags = TLS_DHE_PRIME_511B; 575 break; 576 case 5: 577 srv_log(sess, "TLS test - RSA-DHE using a short 767-bit prime"); 578 eap_conf->tls_test_flags = TLS_DHE_PRIME_767B; 579 break; 580 case 6: 581 srv_log(sess, "TLS test - RSA-DHE using a bogus 15 \"prime\""); 582 eap_conf->tls_test_flags = TLS_DHE_PRIME_15; 583 break; 584 case 7: 585 srv_log(sess, "TLS test - RSA-DHE using a short 58-bit prime in long container"); 586 eap_conf->tls_test_flags = TLS_DHE_PRIME_58B; 587 break; 588 case 8: 589 srv_log(sess, "TLS test - RSA-DHE using a non-prime"); 590 eap_conf->tls_test_flags = TLS_DHE_NON_PRIME; 591 break; 592 default: 593 srv_log(sess, "Unrecognized TLS test"); 594 break; 595 } 596 } 597 #endif /* CONFIG_TESTING_OPTIONS */ 598 599 static void radius_server_testing_options(struct radius_session *sess, 600 struct eap_config *eap_conf) 601 { 602 #ifdef CONFIG_TESTING_OPTIONS 603 const char *pos; 604 605 pos = os_strstr(sess->username, "@test-"); 606 if (pos == NULL) 607 return; 608 pos += 6; 609 if (os_strncmp(pos, "tls-", 4) == 0) 610 radius_server_testing_options_tls(sess, pos + 4, eap_conf); 611 else 612 srv_log(sess, "Unrecognized test: %s", pos); 613 #endif /* CONFIG_TESTING_OPTIONS */ 614 } 615 616 617 static struct radius_session * 618 radius_server_get_new_session(struct radius_server_data *data, 619 struct radius_client *client, 620 struct radius_msg *msg, const char *from_addr) 621 { 622 u8 *user; 623 size_t user_len; 624 int res; 625 struct radius_session *sess; 626 struct eap_config eap_conf; 627 struct eap_user tmp; 628 629 RADIUS_DEBUG("Creating a new session"); 630 631 if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_USER_NAME, &user, 632 &user_len, NULL) < 0) { 633 RADIUS_DEBUG("Could not get User-Name"); 634 return NULL; 635 } 636 RADIUS_DUMP_ASCII("User-Name", user, user_len); 637 638 os_memset(&tmp, 0, sizeof(tmp)); 639 res = data->get_eap_user(data->conf_ctx, user, user_len, 0, &tmp); 640 bin_clear_free(tmp.password, tmp.password_len); 641 642 if (res != 0) { 643 RADIUS_DEBUG("User-Name not found from user database"); 644 return NULL; 645 } 646 647 RADIUS_DEBUG("Matching user entry found"); 648 sess = radius_server_new_session(data, client); 649 if (sess == NULL) { 650 RADIUS_DEBUG("Failed to create a new session"); 651 return NULL; 652 } 653 sess->accept_attr = tmp.accept_attr; 654 sess->macacl = tmp.macacl; 655 656 sess->username = os_malloc(user_len * 4 + 1); 657 if (sess->username == NULL) { 658 radius_server_session_free(data, sess); 659 return NULL; 660 } 661 printf_encode(sess->username, user_len * 4 + 1, user, user_len); 662 663 sess->nas_ip = os_strdup(from_addr); 664 if (sess->nas_ip == NULL) { 665 radius_server_session_free(data, sess); 666 return NULL; 667 } 668 669 srv_log(sess, "New session created"); 670 671 os_memset(&eap_conf, 0, sizeof(eap_conf)); 672 eap_conf.ssl_ctx = data->ssl_ctx; 673 eap_conf.msg_ctx = data->msg_ctx; 674 eap_conf.eap_sim_db_priv = data->eap_sim_db_priv; 675 eap_conf.backend_auth = TRUE; 676 eap_conf.eap_server = 1; 677 eap_conf.pac_opaque_encr_key = data->pac_opaque_encr_key; 678 eap_conf.eap_fast_a_id = data->eap_fast_a_id; 679 eap_conf.eap_fast_a_id_len = data->eap_fast_a_id_len; 680 eap_conf.eap_fast_a_id_info = data->eap_fast_a_id_info; 681 eap_conf.eap_fast_prov = data->eap_fast_prov; 682 eap_conf.pac_key_lifetime = data->pac_key_lifetime; 683 eap_conf.pac_key_refresh_time = data->pac_key_refresh_time; 684 eap_conf.eap_sim_aka_result_ind = data->eap_sim_aka_result_ind; 685 eap_conf.tnc = data->tnc; 686 eap_conf.wps = data->wps; 687 eap_conf.pwd_group = data->pwd_group; 688 eap_conf.server_id = (const u8 *) data->server_id; 689 eap_conf.server_id_len = os_strlen(data->server_id); 690 eap_conf.erp = data->erp; 691 radius_server_testing_options(sess, &eap_conf); 692 sess->eap = eap_server_sm_init(sess, &radius_server_eapol_cb, 693 &eap_conf); 694 if (sess->eap == NULL) { 695 RADIUS_DEBUG("Failed to initialize EAP state machine for the " 696 "new session"); 697 radius_server_session_free(data, sess); 698 return NULL; 699 } 700 sess->eap_if = eap_get_interface(sess->eap); 701 sess->eap_if->eapRestart = TRUE; 702 sess->eap_if->portEnabled = TRUE; 703 704 RADIUS_DEBUG("New session 0x%x initialized", sess->sess_id); 705 706 return sess; 707 } 708 709 710 static struct radius_msg * 711 radius_server_encapsulate_eap(struct radius_server_data *data, 712 struct radius_client *client, 713 struct radius_session *sess, 714 struct radius_msg *request) 715 { 716 struct radius_msg *msg; 717 int code; 718 unsigned int sess_id; 719 struct radius_hdr *hdr = radius_msg_get_hdr(request); 720 721 if (sess->eap_if->eapFail) { 722 sess->eap_if->eapFail = FALSE; 723 code = RADIUS_CODE_ACCESS_REJECT; 724 } else if (sess->eap_if->eapSuccess) { 725 sess->eap_if->eapSuccess = FALSE; 726 code = RADIUS_CODE_ACCESS_ACCEPT; 727 } else { 728 sess->eap_if->eapReq = FALSE; 729 code = RADIUS_CODE_ACCESS_CHALLENGE; 730 } 731 732 msg = radius_msg_new(code, hdr->identifier); 733 if (msg == NULL) { 734 RADIUS_DEBUG("Failed to allocate reply message"); 735 return NULL; 736 } 737 738 sess_id = htonl(sess->sess_id); 739 if (code == RADIUS_CODE_ACCESS_CHALLENGE && 740 !radius_msg_add_attr(msg, RADIUS_ATTR_STATE, 741 (u8 *) &sess_id, sizeof(sess_id))) { 742 RADIUS_DEBUG("Failed to add State attribute"); 743 } 744 745 if (sess->eap_if->eapReqData && 746 !radius_msg_add_eap(msg, wpabuf_head(sess->eap_if->eapReqData), 747 wpabuf_len(sess->eap_if->eapReqData))) { 748 RADIUS_DEBUG("Failed to add EAP-Message attribute"); 749 } 750 751 if (code == RADIUS_CODE_ACCESS_ACCEPT && sess->eap_if->eapKeyData) { 752 int len; 753 #ifdef CONFIG_RADIUS_TEST 754 if (data->dump_msk_file) { 755 FILE *f; 756 char buf[2 * 64 + 1]; 757 f = fopen(data->dump_msk_file, "a"); 758 if (f) { 759 len = sess->eap_if->eapKeyDataLen; 760 if (len > 64) 761 len = 64; 762 len = wpa_snprintf_hex( 763 buf, sizeof(buf), 764 sess->eap_if->eapKeyData, len); 765 buf[len] = '\0'; 766 fprintf(f, "%s\n", buf); 767 fclose(f); 768 } 769 } 770 #endif /* CONFIG_RADIUS_TEST */ 771 if (sess->eap_if->eapKeyDataLen > 64) { 772 len = 32; 773 } else { 774 len = sess->eap_if->eapKeyDataLen / 2; 775 } 776 if (!radius_msg_add_mppe_keys(msg, hdr->authenticator, 777 (u8 *) client->shared_secret, 778 client->shared_secret_len, 779 sess->eap_if->eapKeyData + len, 780 len, sess->eap_if->eapKeyData, 781 len)) { 782 RADIUS_DEBUG("Failed to add MPPE key attributes"); 783 } 784 } 785 786 #ifdef CONFIG_HS20 787 if (code == RADIUS_CODE_ACCESS_ACCEPT && sess->remediation && 788 data->subscr_remediation_url) { 789 u8 *buf; 790 size_t url_len = os_strlen(data->subscr_remediation_url); 791 buf = os_malloc(1 + url_len); 792 if (buf == NULL) { 793 radius_msg_free(msg); 794 return NULL; 795 } 796 buf[0] = data->subscr_remediation_method; 797 os_memcpy(&buf[1], data->subscr_remediation_url, url_len); 798 if (!radius_msg_add_wfa( 799 msg, RADIUS_VENDOR_ATTR_WFA_HS20_SUBSCR_REMEDIATION, 800 buf, 1 + url_len)) { 801 RADIUS_DEBUG("Failed to add WFA-HS20-SubscrRem"); 802 } 803 os_free(buf); 804 } else if (code == RADIUS_CODE_ACCESS_ACCEPT && sess->remediation) { 805 u8 buf[1]; 806 if (!radius_msg_add_wfa( 807 msg, RADIUS_VENDOR_ATTR_WFA_HS20_SUBSCR_REMEDIATION, 808 buf, 0)) { 809 RADIUS_DEBUG("Failed to add WFA-HS20-SubscrRem"); 810 } 811 } 812 #endif /* CONFIG_HS20 */ 813 814 if (radius_msg_copy_attr(msg, request, RADIUS_ATTR_PROXY_STATE) < 0) { 815 RADIUS_DEBUG("Failed to copy Proxy-State attribute(s)"); 816 radius_msg_free(msg); 817 return NULL; 818 } 819 820 if (code == RADIUS_CODE_ACCESS_ACCEPT) { 821 struct hostapd_radius_attr *attr; 822 for (attr = sess->accept_attr; attr; attr = attr->next) { 823 if (!radius_msg_add_attr(msg, attr->type, 824 wpabuf_head(attr->val), 825 wpabuf_len(attr->val))) { 826 wpa_printf(MSG_ERROR, "Could not add RADIUS attribute"); 827 radius_msg_free(msg); 828 return NULL; 829 } 830 } 831 } 832 833 if (radius_msg_finish_srv(msg, (u8 *) client->shared_secret, 834 client->shared_secret_len, 835 hdr->authenticator) < 0) { 836 RADIUS_DEBUG("Failed to add Message-Authenticator attribute"); 837 } 838 839 return msg; 840 } 841 842 843 static struct radius_msg * 844 radius_server_macacl(struct radius_server_data *data, 845 struct radius_client *client, 846 struct radius_session *sess, 847 struct radius_msg *request) 848 { 849 struct radius_msg *msg; 850 int code; 851 struct radius_hdr *hdr = radius_msg_get_hdr(request); 852 u8 *pw; 853 size_t pw_len; 854 855 code = RADIUS_CODE_ACCESS_ACCEPT; 856 857 if (radius_msg_get_attr_ptr(request, RADIUS_ATTR_USER_PASSWORD, &pw, 858 &pw_len, NULL) < 0) { 859 RADIUS_DEBUG("Could not get User-Password"); 860 code = RADIUS_CODE_ACCESS_REJECT; 861 } else { 862 int res; 863 struct eap_user tmp; 864 865 os_memset(&tmp, 0, sizeof(tmp)); 866 res = data->get_eap_user(data->conf_ctx, (u8 *) sess->username, 867 os_strlen(sess->username), 0, &tmp); 868 if (res || !tmp.macacl || tmp.password == NULL) { 869 RADIUS_DEBUG("No MAC ACL user entry"); 870 bin_clear_free(tmp.password, tmp.password_len); 871 code = RADIUS_CODE_ACCESS_REJECT; 872 } else { 873 u8 buf[128]; 874 res = radius_user_password_hide( 875 request, tmp.password, tmp.password_len, 876 (u8 *) client->shared_secret, 877 client->shared_secret_len, 878 buf, sizeof(buf)); 879 bin_clear_free(tmp.password, tmp.password_len); 880 881 if (res < 0 || pw_len != (size_t) res || 882 os_memcmp_const(pw, buf, res) != 0) { 883 RADIUS_DEBUG("Incorrect User-Password"); 884 code = RADIUS_CODE_ACCESS_REJECT; 885 } 886 } 887 } 888 889 msg = radius_msg_new(code, hdr->identifier); 890 if (msg == NULL) { 891 RADIUS_DEBUG("Failed to allocate reply message"); 892 return NULL; 893 } 894 895 if (radius_msg_copy_attr(msg, request, RADIUS_ATTR_PROXY_STATE) < 0) { 896 RADIUS_DEBUG("Failed to copy Proxy-State attribute(s)"); 897 radius_msg_free(msg); 898 return NULL; 899 } 900 901 if (code == RADIUS_CODE_ACCESS_ACCEPT) { 902 struct hostapd_radius_attr *attr; 903 for (attr = sess->accept_attr; attr; attr = attr->next) { 904 if (!radius_msg_add_attr(msg, attr->type, 905 wpabuf_head(attr->val), 906 wpabuf_len(attr->val))) { 907 wpa_printf(MSG_ERROR, "Could not add RADIUS attribute"); 908 radius_msg_free(msg); 909 return NULL; 910 } 911 } 912 } 913 914 if (radius_msg_finish_srv(msg, (u8 *) client->shared_secret, 915 client->shared_secret_len, 916 hdr->authenticator) < 0) { 917 RADIUS_DEBUG("Failed to add Message-Authenticator attribute"); 918 } 919 920 return msg; 921 } 922 923 924 static int radius_server_reject(struct radius_server_data *data, 925 struct radius_client *client, 926 struct radius_msg *request, 927 struct sockaddr *from, socklen_t fromlen, 928 const char *from_addr, int from_port) 929 { 930 struct radius_msg *msg; 931 int ret = 0; 932 struct eap_hdr eapfail; 933 struct wpabuf *buf; 934 struct radius_hdr *hdr = radius_msg_get_hdr(request); 935 936 RADIUS_DEBUG("Reject invalid request from %s:%d", 937 from_addr, from_port); 938 939 msg = radius_msg_new(RADIUS_CODE_ACCESS_REJECT, hdr->identifier); 940 if (msg == NULL) { 941 return -1; 942 } 943 944 os_memset(&eapfail, 0, sizeof(eapfail)); 945 eapfail.code = EAP_CODE_FAILURE; 946 eapfail.identifier = 0; 947 eapfail.length = host_to_be16(sizeof(eapfail)); 948 949 if (!radius_msg_add_eap(msg, (u8 *) &eapfail, sizeof(eapfail))) { 950 RADIUS_DEBUG("Failed to add EAP-Message attribute"); 951 } 952 953 if (radius_msg_copy_attr(msg, request, RADIUS_ATTR_PROXY_STATE) < 0) { 954 RADIUS_DEBUG("Failed to copy Proxy-State attribute(s)"); 955 radius_msg_free(msg); 956 return -1; 957 } 958 959 if (radius_msg_finish_srv(msg, (u8 *) client->shared_secret, 960 client->shared_secret_len, 961 hdr->authenticator) < 962 0) { 963 RADIUS_DEBUG("Failed to add Message-Authenticator attribute"); 964 } 965 966 if (wpa_debug_level <= MSG_MSGDUMP) { 967 radius_msg_dump(msg); 968 } 969 970 data->counters.access_rejects++; 971 client->counters.access_rejects++; 972 buf = radius_msg_get_buf(msg); 973 if (sendto(data->auth_sock, wpabuf_head(buf), wpabuf_len(buf), 0, 974 (struct sockaddr *) from, sizeof(*from)) < 0) { 975 wpa_printf(MSG_INFO, "sendto[RADIUS SRV]: %s", strerror(errno)); 976 ret = -1; 977 } 978 979 radius_msg_free(msg); 980 981 return ret; 982 } 983 984 985 static int radius_server_request(struct radius_server_data *data, 986 struct radius_msg *msg, 987 struct sockaddr *from, socklen_t fromlen, 988 struct radius_client *client, 989 const char *from_addr, int from_port, 990 struct radius_session *force_sess) 991 { 992 struct wpabuf *eap = NULL; 993 int res, state_included = 0; 994 u8 statebuf[4]; 995 unsigned int state; 996 struct radius_session *sess; 997 struct radius_msg *reply; 998 int is_complete = 0; 999 1000 if (force_sess) 1001 sess = force_sess; 1002 else { 1003 res = radius_msg_get_attr(msg, RADIUS_ATTR_STATE, statebuf, 1004 sizeof(statebuf)); 1005 state_included = res >= 0; 1006 if (res == sizeof(statebuf)) { 1007 state = WPA_GET_BE32(statebuf); 1008 sess = radius_server_get_session(client, state); 1009 } else { 1010 sess = NULL; 1011 } 1012 } 1013 1014 if (sess) { 1015 RADIUS_DEBUG("Request for session 0x%x", sess->sess_id); 1016 } else if (state_included) { 1017 RADIUS_DEBUG("State attribute included but no session found"); 1018 radius_server_reject(data, client, msg, from, fromlen, 1019 from_addr, from_port); 1020 return -1; 1021 } else { 1022 sess = radius_server_get_new_session(data, client, msg, 1023 from_addr); 1024 if (sess == NULL) { 1025 RADIUS_DEBUG("Could not create a new session"); 1026 radius_server_reject(data, client, msg, from, fromlen, 1027 from_addr, from_port); 1028 return -1; 1029 } 1030 } 1031 1032 if (sess->last_from_port == from_port && 1033 sess->last_identifier == radius_msg_get_hdr(msg)->identifier && 1034 os_memcmp(sess->last_authenticator, 1035 radius_msg_get_hdr(msg)->authenticator, 16) == 0) { 1036 RADIUS_DEBUG("Duplicate message from %s", from_addr); 1037 data->counters.dup_access_requests++; 1038 client->counters.dup_access_requests++; 1039 1040 if (sess->last_reply) { 1041 struct wpabuf *buf; 1042 buf = radius_msg_get_buf(sess->last_reply); 1043 res = sendto(data->auth_sock, wpabuf_head(buf), 1044 wpabuf_len(buf), 0, 1045 (struct sockaddr *) from, fromlen); 1046 if (res < 0) { 1047 wpa_printf(MSG_INFO, "sendto[RADIUS SRV]: %s", 1048 strerror(errno)); 1049 } 1050 return 0; 1051 } 1052 1053 RADIUS_DEBUG("No previous reply available for duplicate " 1054 "message"); 1055 return -1; 1056 } 1057 1058 eap = radius_msg_get_eap(msg); 1059 if (eap == NULL && sess->macacl) { 1060 reply = radius_server_macacl(data, client, sess, msg); 1061 if (reply == NULL) 1062 return -1; 1063 goto send_reply; 1064 } 1065 if (eap == NULL) { 1066 RADIUS_DEBUG("No EAP-Message in RADIUS packet from %s", 1067 from_addr); 1068 data->counters.packets_dropped++; 1069 client->counters.packets_dropped++; 1070 return -1; 1071 } 1072 1073 RADIUS_DUMP("Received EAP data", wpabuf_head(eap), wpabuf_len(eap)); 1074 1075 /* FIX: if Code is Request, Success, or Failure, send Access-Reject; 1076 * RFC3579 Sect. 2.6.2. 1077 * Include EAP-Response/Nak with no preferred method if 1078 * code == request. 1079 * If code is not 1-4, discard the packet silently. 1080 * Or is this already done by the EAP state machine? */ 1081 1082 wpabuf_free(sess->eap_if->eapRespData); 1083 sess->eap_if->eapRespData = eap; 1084 sess->eap_if->eapResp = TRUE; 1085 eap_server_sm_step(sess->eap); 1086 1087 if ((sess->eap_if->eapReq || sess->eap_if->eapSuccess || 1088 sess->eap_if->eapFail) && sess->eap_if->eapReqData) { 1089 RADIUS_DUMP("EAP data from the state machine", 1090 wpabuf_head(sess->eap_if->eapReqData), 1091 wpabuf_len(sess->eap_if->eapReqData)); 1092 } else if (sess->eap_if->eapFail) { 1093 RADIUS_DEBUG("No EAP data from the state machine, but eapFail " 1094 "set"); 1095 } else if (eap_sm_method_pending(sess->eap)) { 1096 radius_msg_free(sess->last_msg); 1097 sess->last_msg = msg; 1098 sess->last_from_port = from_port; 1099 os_free(sess->last_from_addr); 1100 sess->last_from_addr = os_strdup(from_addr); 1101 sess->last_fromlen = fromlen; 1102 os_memcpy(&sess->last_from, from, fromlen); 1103 return -2; 1104 } else { 1105 RADIUS_DEBUG("No EAP data from the state machine - ignore this" 1106 " Access-Request silently (assuming it was a " 1107 "duplicate)"); 1108 data->counters.packets_dropped++; 1109 client->counters.packets_dropped++; 1110 return -1; 1111 } 1112 1113 if (sess->eap_if->eapSuccess || sess->eap_if->eapFail) 1114 is_complete = 1; 1115 if (sess->eap_if->eapFail) 1116 srv_log(sess, "EAP authentication failed"); 1117 else if (sess->eap_if->eapSuccess) 1118 srv_log(sess, "EAP authentication succeeded"); 1119 1120 reply = radius_server_encapsulate_eap(data, client, sess, msg); 1121 1122 send_reply: 1123 if (reply) { 1124 struct wpabuf *buf; 1125 struct radius_hdr *hdr; 1126 1127 RADIUS_DEBUG("Reply to %s:%d", from_addr, from_port); 1128 if (wpa_debug_level <= MSG_MSGDUMP) { 1129 radius_msg_dump(reply); 1130 } 1131 1132 switch (radius_msg_get_hdr(reply)->code) { 1133 case RADIUS_CODE_ACCESS_ACCEPT: 1134 srv_log(sess, "Sending Access-Accept"); 1135 data->counters.access_accepts++; 1136 client->counters.access_accepts++; 1137 break; 1138 case RADIUS_CODE_ACCESS_REJECT: 1139 srv_log(sess, "Sending Access-Reject"); 1140 data->counters.access_rejects++; 1141 client->counters.access_rejects++; 1142 break; 1143 case RADIUS_CODE_ACCESS_CHALLENGE: 1144 data->counters.access_challenges++; 1145 client->counters.access_challenges++; 1146 break; 1147 } 1148 buf = radius_msg_get_buf(reply); 1149 res = sendto(data->auth_sock, wpabuf_head(buf), 1150 wpabuf_len(buf), 0, 1151 (struct sockaddr *) from, fromlen); 1152 if (res < 0) { 1153 wpa_printf(MSG_INFO, "sendto[RADIUS SRV]: %s", 1154 strerror(errno)); 1155 } 1156 radius_msg_free(sess->last_reply); 1157 sess->last_reply = reply; 1158 sess->last_from_port = from_port; 1159 hdr = radius_msg_get_hdr(msg); 1160 sess->last_identifier = hdr->identifier; 1161 os_memcpy(sess->last_authenticator, hdr->authenticator, 16); 1162 } else { 1163 data->counters.packets_dropped++; 1164 client->counters.packets_dropped++; 1165 } 1166 1167 if (is_complete) { 1168 RADIUS_DEBUG("Removing completed session 0x%x after timeout", 1169 sess->sess_id); 1170 eloop_cancel_timeout(radius_server_session_remove_timeout, 1171 data, sess); 1172 eloop_register_timeout(10, 0, 1173 radius_server_session_remove_timeout, 1174 data, sess); 1175 } 1176 1177 return 0; 1178 } 1179 1180 1181 static void radius_server_receive_auth(int sock, void *eloop_ctx, 1182 void *sock_ctx) 1183 { 1184 struct radius_server_data *data = eloop_ctx; 1185 u8 *buf = NULL; 1186 union { 1187 struct sockaddr_storage ss; 1188 struct sockaddr_in sin; 1189 #ifdef CONFIG_IPV6 1190 struct sockaddr_in6 sin6; 1191 #endif /* CONFIG_IPV6 */ 1192 } from; 1193 socklen_t fromlen; 1194 int len; 1195 struct radius_client *client = NULL; 1196 struct radius_msg *msg = NULL; 1197 char abuf[50]; 1198 int from_port = 0; 1199 1200 buf = os_malloc(RADIUS_MAX_MSG_LEN); 1201 if (buf == NULL) { 1202 goto fail; 1203 } 1204 1205 fromlen = sizeof(from); 1206 len = recvfrom(sock, buf, RADIUS_MAX_MSG_LEN, 0, 1207 (struct sockaddr *) &from.ss, &fromlen); 1208 if (len < 0) { 1209 wpa_printf(MSG_INFO, "recvfrom[radius_server]: %s", 1210 strerror(errno)); 1211 goto fail; 1212 } 1213 1214 #ifdef CONFIG_IPV6 1215 if (data->ipv6) { 1216 if (inet_ntop(AF_INET6, &from.sin6.sin6_addr, abuf, 1217 sizeof(abuf)) == NULL) 1218 abuf[0] = '\0'; 1219 from_port = ntohs(from.sin6.sin6_port); 1220 RADIUS_DEBUG("Received %d bytes from %s:%d", 1221 len, abuf, from_port); 1222 1223 client = radius_server_get_client(data, 1224 (struct in_addr *) 1225 &from.sin6.sin6_addr, 1); 1226 } 1227 #endif /* CONFIG_IPV6 */ 1228 1229 if (!data->ipv6) { 1230 os_strlcpy(abuf, inet_ntoa(from.sin.sin_addr), sizeof(abuf)); 1231 from_port = ntohs(from.sin.sin_port); 1232 RADIUS_DEBUG("Received %d bytes from %s:%d", 1233 len, abuf, from_port); 1234 1235 client = radius_server_get_client(data, &from.sin.sin_addr, 0); 1236 } 1237 1238 RADIUS_DUMP("Received data", buf, len); 1239 1240 if (client == NULL) { 1241 RADIUS_DEBUG("Unknown client %s - packet ignored", abuf); 1242 data->counters.invalid_requests++; 1243 goto fail; 1244 } 1245 1246 msg = radius_msg_parse(buf, len); 1247 if (msg == NULL) { 1248 RADIUS_DEBUG("Parsing incoming RADIUS frame failed"); 1249 data->counters.malformed_access_requests++; 1250 client->counters.malformed_access_requests++; 1251 goto fail; 1252 } 1253 1254 os_free(buf); 1255 buf = NULL; 1256 1257 if (wpa_debug_level <= MSG_MSGDUMP) { 1258 radius_msg_dump(msg); 1259 } 1260 1261 if (radius_msg_get_hdr(msg)->code != RADIUS_CODE_ACCESS_REQUEST) { 1262 RADIUS_DEBUG("Unexpected RADIUS code %d", 1263 radius_msg_get_hdr(msg)->code); 1264 data->counters.unknown_types++; 1265 client->counters.unknown_types++; 1266 goto fail; 1267 } 1268 1269 data->counters.access_requests++; 1270 client->counters.access_requests++; 1271 1272 if (radius_msg_verify_msg_auth(msg, (u8 *) client->shared_secret, 1273 client->shared_secret_len, NULL)) { 1274 RADIUS_DEBUG("Invalid Message-Authenticator from %s", abuf); 1275 data->counters.bad_authenticators++; 1276 client->counters.bad_authenticators++; 1277 goto fail; 1278 } 1279 1280 if (radius_server_request(data, msg, (struct sockaddr *) &from, 1281 fromlen, client, abuf, from_port, NULL) == 1282 -2) 1283 return; /* msg was stored with the session */ 1284 1285 fail: 1286 radius_msg_free(msg); 1287 os_free(buf); 1288 } 1289 1290 1291 static void radius_server_receive_acct(int sock, void *eloop_ctx, 1292 void *sock_ctx) 1293 { 1294 struct radius_server_data *data = eloop_ctx; 1295 u8 *buf = NULL; 1296 union { 1297 struct sockaddr_storage ss; 1298 struct sockaddr_in sin; 1299 #ifdef CONFIG_IPV6 1300 struct sockaddr_in6 sin6; 1301 #endif /* CONFIG_IPV6 */ 1302 } from; 1303 socklen_t fromlen; 1304 int len, res; 1305 struct radius_client *client = NULL; 1306 struct radius_msg *msg = NULL, *resp = NULL; 1307 char abuf[50]; 1308 int from_port = 0; 1309 struct radius_hdr *hdr; 1310 struct wpabuf *rbuf; 1311 1312 buf = os_malloc(RADIUS_MAX_MSG_LEN); 1313 if (buf == NULL) { 1314 goto fail; 1315 } 1316 1317 fromlen = sizeof(from); 1318 len = recvfrom(sock, buf, RADIUS_MAX_MSG_LEN, 0, 1319 (struct sockaddr *) &from.ss, &fromlen); 1320 if (len < 0) { 1321 wpa_printf(MSG_INFO, "recvfrom[radius_server]: %s", 1322 strerror(errno)); 1323 goto fail; 1324 } 1325 1326 #ifdef CONFIG_IPV6 1327 if (data->ipv6) { 1328 if (inet_ntop(AF_INET6, &from.sin6.sin6_addr, abuf, 1329 sizeof(abuf)) == NULL) 1330 abuf[0] = '\0'; 1331 from_port = ntohs(from.sin6.sin6_port); 1332 RADIUS_DEBUG("Received %d bytes from %s:%d", 1333 len, abuf, from_port); 1334 1335 client = radius_server_get_client(data, 1336 (struct in_addr *) 1337 &from.sin6.sin6_addr, 1); 1338 } 1339 #endif /* CONFIG_IPV6 */ 1340 1341 if (!data->ipv6) { 1342 os_strlcpy(abuf, inet_ntoa(from.sin.sin_addr), sizeof(abuf)); 1343 from_port = ntohs(from.sin.sin_port); 1344 RADIUS_DEBUG("Received %d bytes from %s:%d", 1345 len, abuf, from_port); 1346 1347 client = radius_server_get_client(data, &from.sin.sin_addr, 0); 1348 } 1349 1350 RADIUS_DUMP("Received data", buf, len); 1351 1352 if (client == NULL) { 1353 RADIUS_DEBUG("Unknown client %s - packet ignored", abuf); 1354 data->counters.invalid_acct_requests++; 1355 goto fail; 1356 } 1357 1358 msg = radius_msg_parse(buf, len); 1359 if (msg == NULL) { 1360 RADIUS_DEBUG("Parsing incoming RADIUS frame failed"); 1361 data->counters.malformed_acct_requests++; 1362 client->counters.malformed_acct_requests++; 1363 goto fail; 1364 } 1365 1366 os_free(buf); 1367 buf = NULL; 1368 1369 if (wpa_debug_level <= MSG_MSGDUMP) { 1370 radius_msg_dump(msg); 1371 } 1372 1373 if (radius_msg_get_hdr(msg)->code != RADIUS_CODE_ACCOUNTING_REQUEST) { 1374 RADIUS_DEBUG("Unexpected RADIUS code %d", 1375 radius_msg_get_hdr(msg)->code); 1376 data->counters.unknown_acct_types++; 1377 client->counters.unknown_acct_types++; 1378 goto fail; 1379 } 1380 1381 data->counters.acct_requests++; 1382 client->counters.acct_requests++; 1383 1384 if (radius_msg_verify_acct_req(msg, (u8 *) client->shared_secret, 1385 client->shared_secret_len)) { 1386 RADIUS_DEBUG("Invalid Authenticator from %s", abuf); 1387 data->counters.acct_bad_authenticators++; 1388 client->counters.acct_bad_authenticators++; 1389 goto fail; 1390 } 1391 1392 /* TODO: Write accounting information to a file or database */ 1393 1394 hdr = radius_msg_get_hdr(msg); 1395 1396 resp = radius_msg_new(RADIUS_CODE_ACCOUNTING_RESPONSE, hdr->identifier); 1397 if (resp == NULL) 1398 goto fail; 1399 1400 radius_msg_finish_acct_resp(resp, (u8 *) client->shared_secret, 1401 client->shared_secret_len, 1402 hdr->authenticator); 1403 1404 RADIUS_DEBUG("Reply to %s:%d", abuf, from_port); 1405 if (wpa_debug_level <= MSG_MSGDUMP) { 1406 radius_msg_dump(resp); 1407 } 1408 rbuf = radius_msg_get_buf(resp); 1409 data->counters.acct_responses++; 1410 client->counters.acct_responses++; 1411 res = sendto(data->acct_sock, wpabuf_head(rbuf), wpabuf_len(rbuf), 0, 1412 (struct sockaddr *) &from.ss, fromlen); 1413 if (res < 0) { 1414 wpa_printf(MSG_INFO, "sendto[RADIUS SRV]: %s", 1415 strerror(errno)); 1416 } 1417 1418 fail: 1419 radius_msg_free(resp); 1420 radius_msg_free(msg); 1421 os_free(buf); 1422 } 1423 1424 1425 static int radius_server_disable_pmtu_discovery(int s) 1426 { 1427 int r = -1; 1428 #if defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DONT) 1429 /* Turn off Path MTU discovery on IPv4/UDP sockets. */ 1430 int action = IP_PMTUDISC_DONT; 1431 r = setsockopt(s, IPPROTO_IP, IP_MTU_DISCOVER, &action, 1432 sizeof(action)); 1433 if (r == -1) 1434 wpa_printf(MSG_ERROR, "Failed to set IP_MTU_DISCOVER: " 1435 "%s", strerror(errno)); 1436 #endif 1437 return r; 1438 } 1439 1440 1441 static int radius_server_open_socket(int port) 1442 { 1443 int s; 1444 struct sockaddr_in addr; 1445 1446 s = socket(PF_INET, SOCK_DGRAM, 0); 1447 if (s < 0) { 1448 wpa_printf(MSG_INFO, "RADIUS: socket: %s", strerror(errno)); 1449 return -1; 1450 } 1451 1452 radius_server_disable_pmtu_discovery(s); 1453 1454 os_memset(&addr, 0, sizeof(addr)); 1455 addr.sin_family = AF_INET; 1456 addr.sin_port = htons(port); 1457 if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) { 1458 wpa_printf(MSG_INFO, "RADIUS: bind: %s", strerror(errno)); 1459 close(s); 1460 return -1; 1461 } 1462 1463 return s; 1464 } 1465 1466 1467 #ifdef CONFIG_IPV6 1468 static int radius_server_open_socket6(int port) 1469 { 1470 int s; 1471 struct sockaddr_in6 addr; 1472 1473 s = socket(PF_INET6, SOCK_DGRAM, 0); 1474 if (s < 0) { 1475 wpa_printf(MSG_INFO, "RADIUS: socket[IPv6]: %s", 1476 strerror(errno)); 1477 return -1; 1478 } 1479 1480 os_memset(&addr, 0, sizeof(addr)); 1481 addr.sin6_family = AF_INET6; 1482 os_memcpy(&addr.sin6_addr, &in6addr_any, sizeof(in6addr_any)); 1483 addr.sin6_port = htons(port); 1484 if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) { 1485 wpa_printf(MSG_INFO, "RADIUS: bind: %s", strerror(errno)); 1486 close(s); 1487 return -1; 1488 } 1489 1490 return s; 1491 } 1492 #endif /* CONFIG_IPV6 */ 1493 1494 1495 static void radius_server_free_sessions(struct radius_server_data *data, 1496 struct radius_session *sessions) 1497 { 1498 struct radius_session *session, *prev; 1499 1500 session = sessions; 1501 while (session) { 1502 prev = session; 1503 session = session->next; 1504 radius_server_session_free(data, prev); 1505 } 1506 } 1507 1508 1509 static void radius_server_free_clients(struct radius_server_data *data, 1510 struct radius_client *clients) 1511 { 1512 struct radius_client *client, *prev; 1513 1514 client = clients; 1515 while (client) { 1516 prev = client; 1517 client = client->next; 1518 1519 radius_server_free_sessions(data, prev->sessions); 1520 os_free(prev->shared_secret); 1521 os_free(prev); 1522 } 1523 } 1524 1525 1526 static struct radius_client * 1527 radius_server_read_clients(const char *client_file, int ipv6) 1528 { 1529 FILE *f; 1530 const int buf_size = 1024; 1531 char *buf, *pos; 1532 struct radius_client *clients, *tail, *entry; 1533 int line = 0, mask, failed = 0, i; 1534 struct in_addr addr; 1535 #ifdef CONFIG_IPV6 1536 struct in6_addr addr6; 1537 #endif /* CONFIG_IPV6 */ 1538 unsigned int val; 1539 1540 f = fopen(client_file, "r"); 1541 if (f == NULL) { 1542 RADIUS_ERROR("Could not open client file '%s'", client_file); 1543 return NULL; 1544 } 1545 1546 buf = os_malloc(buf_size); 1547 if (buf == NULL) { 1548 fclose(f); 1549 return NULL; 1550 } 1551 1552 clients = tail = NULL; 1553 while (fgets(buf, buf_size, f)) { 1554 /* Configuration file format: 1555 * 192.168.1.0/24 secret 1556 * 192.168.1.2 secret 1557 * fe80::211:22ff:fe33:4455/64 secretipv6 1558 */ 1559 line++; 1560 buf[buf_size - 1] = '\0'; 1561 pos = buf; 1562 while (*pos != '\0' && *pos != '\n') 1563 pos++; 1564 if (*pos == '\n') 1565 *pos = '\0'; 1566 if (*buf == '\0' || *buf == '#') 1567 continue; 1568 1569 pos = buf; 1570 while ((*pos >= '0' && *pos <= '9') || *pos == '.' || 1571 (*pos >= 'a' && *pos <= 'f') || *pos == ':' || 1572 (*pos >= 'A' && *pos <= 'F')) { 1573 pos++; 1574 } 1575 1576 if (*pos == '\0') { 1577 failed = 1; 1578 break; 1579 } 1580 1581 if (*pos == '/') { 1582 char *end; 1583 *pos++ = '\0'; 1584 mask = strtol(pos, &end, 10); 1585 if ((pos == end) || 1586 (mask < 0 || mask > (ipv6 ? 128 : 32))) { 1587 failed = 1; 1588 break; 1589 } 1590 pos = end; 1591 } else { 1592 mask = ipv6 ? 128 : 32; 1593 *pos++ = '\0'; 1594 } 1595 1596 if (!ipv6 && inet_aton(buf, &addr) == 0) { 1597 failed = 1; 1598 break; 1599 } 1600 #ifdef CONFIG_IPV6 1601 if (ipv6 && inet_pton(AF_INET6, buf, &addr6) <= 0) { 1602 if (inet_pton(AF_INET, buf, &addr) <= 0) { 1603 failed = 1; 1604 break; 1605 } 1606 /* Convert IPv4 address to IPv6 */ 1607 if (mask <= 32) 1608 mask += (128 - 32); 1609 os_memset(addr6.s6_addr, 0, 10); 1610 addr6.s6_addr[10] = 0xff; 1611 addr6.s6_addr[11] = 0xff; 1612 os_memcpy(addr6.s6_addr + 12, (char *) &addr.s_addr, 1613 4); 1614 } 1615 #endif /* CONFIG_IPV6 */ 1616 1617 while (*pos == ' ' || *pos == '\t') { 1618 pos++; 1619 } 1620 1621 if (*pos == '\0') { 1622 failed = 1; 1623 break; 1624 } 1625 1626 entry = os_zalloc(sizeof(*entry)); 1627 if (entry == NULL) { 1628 failed = 1; 1629 break; 1630 } 1631 entry->shared_secret = os_strdup(pos); 1632 if (entry->shared_secret == NULL) { 1633 failed = 1; 1634 os_free(entry); 1635 break; 1636 } 1637 entry->shared_secret_len = os_strlen(entry->shared_secret); 1638 if (!ipv6) { 1639 entry->addr.s_addr = addr.s_addr; 1640 val = 0; 1641 for (i = 0; i < mask; i++) 1642 val |= 1 << (31 - i); 1643 entry->mask.s_addr = htonl(val); 1644 } 1645 #ifdef CONFIG_IPV6 1646 if (ipv6) { 1647 int offset = mask / 8; 1648 1649 os_memcpy(entry->addr6.s6_addr, addr6.s6_addr, 16); 1650 os_memset(entry->mask6.s6_addr, 0xff, offset); 1651 val = 0; 1652 for (i = 0; i < (mask % 8); i++) 1653 val |= 1 << (7 - i); 1654 if (offset < 16) 1655 entry->mask6.s6_addr[offset] = val; 1656 } 1657 #endif /* CONFIG_IPV6 */ 1658 1659 if (tail == NULL) { 1660 clients = tail = entry; 1661 } else { 1662 tail->next = entry; 1663 tail = entry; 1664 } 1665 } 1666 1667 if (failed) { 1668 RADIUS_ERROR("Invalid line %d in '%s'", line, client_file); 1669 radius_server_free_clients(NULL, clients); 1670 clients = NULL; 1671 } 1672 1673 os_free(buf); 1674 fclose(f); 1675 1676 return clients; 1677 } 1678 1679 1680 /** 1681 * radius_server_init - Initialize RADIUS server 1682 * @conf: Configuration for the RADIUS server 1683 * Returns: Pointer to private RADIUS server context or %NULL on failure 1684 * 1685 * This initializes a RADIUS server instance and returns a context pointer that 1686 * will be used in other calls to the RADIUS server module. The server can be 1687 * deinitialize by calling radius_server_deinit(). 1688 */ 1689 struct radius_server_data * 1690 radius_server_init(struct radius_server_conf *conf) 1691 { 1692 struct radius_server_data *data; 1693 1694 #ifndef CONFIG_IPV6 1695 if (conf->ipv6) { 1696 wpa_printf(MSG_ERROR, "RADIUS server compiled without IPv6 support"); 1697 return NULL; 1698 } 1699 #endif /* CONFIG_IPV6 */ 1700 1701 data = os_zalloc(sizeof(*data)); 1702 if (data == NULL) 1703 return NULL; 1704 1705 dl_list_init(&data->erp_keys); 1706 os_get_reltime(&data->start_time); 1707 data->conf_ctx = conf->conf_ctx; 1708 data->eap_sim_db_priv = conf->eap_sim_db_priv; 1709 data->ssl_ctx = conf->ssl_ctx; 1710 data->msg_ctx = conf->msg_ctx; 1711 data->ipv6 = conf->ipv6; 1712 if (conf->pac_opaque_encr_key) { 1713 data->pac_opaque_encr_key = os_malloc(16); 1714 if (data->pac_opaque_encr_key) { 1715 os_memcpy(data->pac_opaque_encr_key, 1716 conf->pac_opaque_encr_key, 16); 1717 } 1718 } 1719 if (conf->eap_fast_a_id) { 1720 data->eap_fast_a_id = os_malloc(conf->eap_fast_a_id_len); 1721 if (data->eap_fast_a_id) { 1722 os_memcpy(data->eap_fast_a_id, conf->eap_fast_a_id, 1723 conf->eap_fast_a_id_len); 1724 data->eap_fast_a_id_len = conf->eap_fast_a_id_len; 1725 } 1726 } 1727 if (conf->eap_fast_a_id_info) 1728 data->eap_fast_a_id_info = os_strdup(conf->eap_fast_a_id_info); 1729 data->eap_fast_prov = conf->eap_fast_prov; 1730 data->pac_key_lifetime = conf->pac_key_lifetime; 1731 data->pac_key_refresh_time = conf->pac_key_refresh_time; 1732 data->get_eap_user = conf->get_eap_user; 1733 data->eap_sim_aka_result_ind = conf->eap_sim_aka_result_ind; 1734 data->tnc = conf->tnc; 1735 data->wps = conf->wps; 1736 data->pwd_group = conf->pwd_group; 1737 data->server_id = conf->server_id; 1738 if (conf->eap_req_id_text) { 1739 data->eap_req_id_text = os_malloc(conf->eap_req_id_text_len); 1740 if (data->eap_req_id_text) { 1741 os_memcpy(data->eap_req_id_text, conf->eap_req_id_text, 1742 conf->eap_req_id_text_len); 1743 data->eap_req_id_text_len = conf->eap_req_id_text_len; 1744 } 1745 } 1746 data->erp = conf->erp; 1747 data->erp_domain = conf->erp_domain; 1748 1749 if (conf->subscr_remediation_url) { 1750 data->subscr_remediation_url = 1751 os_strdup(conf->subscr_remediation_url); 1752 } 1753 data->subscr_remediation_method = conf->subscr_remediation_method; 1754 1755 #ifdef CONFIG_SQLITE 1756 if (conf->sqlite_file) { 1757 if (sqlite3_open(conf->sqlite_file, &data->db)) { 1758 RADIUS_ERROR("Could not open SQLite file '%s'", 1759 conf->sqlite_file); 1760 radius_server_deinit(data); 1761 return NULL; 1762 } 1763 } 1764 #endif /* CONFIG_SQLITE */ 1765 1766 #ifdef CONFIG_RADIUS_TEST 1767 if (conf->dump_msk_file) 1768 data->dump_msk_file = os_strdup(conf->dump_msk_file); 1769 #endif /* CONFIG_RADIUS_TEST */ 1770 1771 data->clients = radius_server_read_clients(conf->client_file, 1772 conf->ipv6); 1773 if (data->clients == NULL) { 1774 wpa_printf(MSG_ERROR, "No RADIUS clients configured"); 1775 radius_server_deinit(data); 1776 return NULL; 1777 } 1778 1779 #ifdef CONFIG_IPV6 1780 if (conf->ipv6) 1781 data->auth_sock = radius_server_open_socket6(conf->auth_port); 1782 else 1783 #endif /* CONFIG_IPV6 */ 1784 data->auth_sock = radius_server_open_socket(conf->auth_port); 1785 if (data->auth_sock < 0) { 1786 wpa_printf(MSG_ERROR, "Failed to open UDP socket for RADIUS authentication server"); 1787 radius_server_deinit(data); 1788 return NULL; 1789 } 1790 if (eloop_register_read_sock(data->auth_sock, 1791 radius_server_receive_auth, 1792 data, NULL)) { 1793 radius_server_deinit(data); 1794 return NULL; 1795 } 1796 1797 if (conf->acct_port) { 1798 #ifdef CONFIG_IPV6 1799 if (conf->ipv6) 1800 data->acct_sock = radius_server_open_socket6( 1801 conf->acct_port); 1802 else 1803 #endif /* CONFIG_IPV6 */ 1804 data->acct_sock = radius_server_open_socket(conf->acct_port); 1805 if (data->acct_sock < 0) { 1806 wpa_printf(MSG_ERROR, "Failed to open UDP socket for RADIUS accounting server"); 1807 radius_server_deinit(data); 1808 return NULL; 1809 } 1810 if (eloop_register_read_sock(data->acct_sock, 1811 radius_server_receive_acct, 1812 data, NULL)) { 1813 radius_server_deinit(data); 1814 return NULL; 1815 } 1816 } else { 1817 data->acct_sock = -1; 1818 } 1819 1820 return data; 1821 } 1822 1823 1824 /** 1825 * radius_server_erp_flush - Flush all ERP keys 1826 * @data: RADIUS server context from radius_server_init() 1827 */ 1828 void radius_server_erp_flush(struct radius_server_data *data) 1829 { 1830 struct eap_server_erp_key *erp; 1831 1832 if (data == NULL) 1833 return; 1834 while ((erp = dl_list_first(&data->erp_keys, struct eap_server_erp_key, 1835 list)) != NULL) { 1836 dl_list_del(&erp->list); 1837 bin_clear_free(erp, sizeof(*erp)); 1838 } 1839 } 1840 1841 1842 /** 1843 * radius_server_deinit - Deinitialize RADIUS server 1844 * @data: RADIUS server context from radius_server_init() 1845 */ 1846 void radius_server_deinit(struct radius_server_data *data) 1847 { 1848 if (data == NULL) 1849 return; 1850 1851 if (data->auth_sock >= 0) { 1852 eloop_unregister_read_sock(data->auth_sock); 1853 close(data->auth_sock); 1854 } 1855 1856 if (data->acct_sock >= 0) { 1857 eloop_unregister_read_sock(data->acct_sock); 1858 close(data->acct_sock); 1859 } 1860 1861 radius_server_free_clients(data, data->clients); 1862 1863 os_free(data->pac_opaque_encr_key); 1864 os_free(data->eap_fast_a_id); 1865 os_free(data->eap_fast_a_id_info); 1866 os_free(data->eap_req_id_text); 1867 #ifdef CONFIG_RADIUS_TEST 1868 os_free(data->dump_msk_file); 1869 #endif /* CONFIG_RADIUS_TEST */ 1870 os_free(data->subscr_remediation_url); 1871 1872 #ifdef CONFIG_SQLITE 1873 if (data->db) 1874 sqlite3_close(data->db); 1875 #endif /* CONFIG_SQLITE */ 1876 1877 radius_server_erp_flush(data); 1878 1879 os_free(data); 1880 } 1881 1882 1883 /** 1884 * radius_server_get_mib - Get RADIUS server MIB information 1885 * @data: RADIUS server context from radius_server_init() 1886 * @buf: Buffer for returning the MIB data in text format 1887 * @buflen: buf length in octets 1888 * Returns: Number of octets written into buf 1889 */ 1890 int radius_server_get_mib(struct radius_server_data *data, char *buf, 1891 size_t buflen) 1892 { 1893 int ret, uptime; 1894 unsigned int idx; 1895 char *end, *pos; 1896 struct os_reltime now; 1897 struct radius_client *cli; 1898 1899 /* RFC 2619 - RADIUS Authentication Server MIB */ 1900 1901 if (data == NULL || buflen == 0) 1902 return 0; 1903 1904 pos = buf; 1905 end = buf + buflen; 1906 1907 os_get_reltime(&now); 1908 uptime = (now.sec - data->start_time.sec) * 100 + 1909 ((now.usec - data->start_time.usec) / 10000) % 100; 1910 ret = os_snprintf(pos, end - pos, 1911 "RADIUS-AUTH-SERVER-MIB\n" 1912 "radiusAuthServIdent=hostapd\n" 1913 "radiusAuthServUpTime=%d\n" 1914 "radiusAuthServResetTime=0\n" 1915 "radiusAuthServConfigReset=4\n", 1916 uptime); 1917 if (os_snprintf_error(end - pos, ret)) { 1918 *pos = '\0'; 1919 return pos - buf; 1920 } 1921 pos += ret; 1922 1923 ret = os_snprintf(pos, end - pos, 1924 "radiusAuthServTotalAccessRequests=%u\n" 1925 "radiusAuthServTotalInvalidRequests=%u\n" 1926 "radiusAuthServTotalDupAccessRequests=%u\n" 1927 "radiusAuthServTotalAccessAccepts=%u\n" 1928 "radiusAuthServTotalAccessRejects=%u\n" 1929 "radiusAuthServTotalAccessChallenges=%u\n" 1930 "radiusAuthServTotalMalformedAccessRequests=%u\n" 1931 "radiusAuthServTotalBadAuthenticators=%u\n" 1932 "radiusAuthServTotalPacketsDropped=%u\n" 1933 "radiusAuthServTotalUnknownTypes=%u\n" 1934 "radiusAccServTotalRequests=%u\n" 1935 "radiusAccServTotalInvalidRequests=%u\n" 1936 "radiusAccServTotalResponses=%u\n" 1937 "radiusAccServTotalMalformedRequests=%u\n" 1938 "radiusAccServTotalBadAuthenticators=%u\n" 1939 "radiusAccServTotalUnknownTypes=%u\n", 1940 data->counters.access_requests, 1941 data->counters.invalid_requests, 1942 data->counters.dup_access_requests, 1943 data->counters.access_accepts, 1944 data->counters.access_rejects, 1945 data->counters.access_challenges, 1946 data->counters.malformed_access_requests, 1947 data->counters.bad_authenticators, 1948 data->counters.packets_dropped, 1949 data->counters.unknown_types, 1950 data->counters.acct_requests, 1951 data->counters.invalid_acct_requests, 1952 data->counters.acct_responses, 1953 data->counters.malformed_acct_requests, 1954 data->counters.acct_bad_authenticators, 1955 data->counters.unknown_acct_types); 1956 if (os_snprintf_error(end - pos, ret)) { 1957 *pos = '\0'; 1958 return pos - buf; 1959 } 1960 pos += ret; 1961 1962 for (cli = data->clients, idx = 0; cli; cli = cli->next, idx++) { 1963 char abuf[50], mbuf[50]; 1964 #ifdef CONFIG_IPV6 1965 if (data->ipv6) { 1966 if (inet_ntop(AF_INET6, &cli->addr6, abuf, 1967 sizeof(abuf)) == NULL) 1968 abuf[0] = '\0'; 1969 if (inet_ntop(AF_INET6, &cli->mask6, mbuf, 1970 sizeof(mbuf)) == NULL) 1971 mbuf[0] = '\0'; 1972 } 1973 #endif /* CONFIG_IPV6 */ 1974 if (!data->ipv6) { 1975 os_strlcpy(abuf, inet_ntoa(cli->addr), sizeof(abuf)); 1976 os_strlcpy(mbuf, inet_ntoa(cli->mask), sizeof(mbuf)); 1977 } 1978 1979 ret = os_snprintf(pos, end - pos, 1980 "radiusAuthClientIndex=%u\n" 1981 "radiusAuthClientAddress=%s/%s\n" 1982 "radiusAuthServAccessRequests=%u\n" 1983 "radiusAuthServDupAccessRequests=%u\n" 1984 "radiusAuthServAccessAccepts=%u\n" 1985 "radiusAuthServAccessRejects=%u\n" 1986 "radiusAuthServAccessChallenges=%u\n" 1987 "radiusAuthServMalformedAccessRequests=%u\n" 1988 "radiusAuthServBadAuthenticators=%u\n" 1989 "radiusAuthServPacketsDropped=%u\n" 1990 "radiusAuthServUnknownTypes=%u\n" 1991 "radiusAccServTotalRequests=%u\n" 1992 "radiusAccServTotalInvalidRequests=%u\n" 1993 "radiusAccServTotalResponses=%u\n" 1994 "radiusAccServTotalMalformedRequests=%u\n" 1995 "radiusAccServTotalBadAuthenticators=%u\n" 1996 "radiusAccServTotalUnknownTypes=%u\n", 1997 idx, 1998 abuf, mbuf, 1999 cli->counters.access_requests, 2000 cli->counters.dup_access_requests, 2001 cli->counters.access_accepts, 2002 cli->counters.access_rejects, 2003 cli->counters.access_challenges, 2004 cli->counters.malformed_access_requests, 2005 cli->counters.bad_authenticators, 2006 cli->counters.packets_dropped, 2007 cli->counters.unknown_types, 2008 cli->counters.acct_requests, 2009 cli->counters.invalid_acct_requests, 2010 cli->counters.acct_responses, 2011 cli->counters.malformed_acct_requests, 2012 cli->counters.acct_bad_authenticators, 2013 cli->counters.unknown_acct_types); 2014 if (os_snprintf_error(end - pos, ret)) { 2015 *pos = '\0'; 2016 return pos - buf; 2017 } 2018 pos += ret; 2019 } 2020 2021 return pos - buf; 2022 } 2023 2024 2025 static int radius_server_get_eap_user(void *ctx, const u8 *identity, 2026 size_t identity_len, int phase2, 2027 struct eap_user *user) 2028 { 2029 struct radius_session *sess = ctx; 2030 struct radius_server_data *data = sess->server; 2031 int ret; 2032 2033 ret = data->get_eap_user(data->conf_ctx, identity, identity_len, 2034 phase2, user); 2035 if (ret == 0 && user) { 2036 sess->accept_attr = user->accept_attr; 2037 sess->remediation = user->remediation; 2038 sess->macacl = user->macacl; 2039 } 2040 2041 if (ret) { 2042 RADIUS_DEBUG("%s: User-Name not found from user database", 2043 __func__); 2044 } 2045 2046 return ret; 2047 } 2048 2049 2050 static const char * radius_server_get_eap_req_id_text(void *ctx, size_t *len) 2051 { 2052 struct radius_session *sess = ctx; 2053 struct radius_server_data *data = sess->server; 2054 *len = data->eap_req_id_text_len; 2055 return data->eap_req_id_text; 2056 } 2057 2058 2059 static void radius_server_log_msg(void *ctx, const char *msg) 2060 { 2061 struct radius_session *sess = ctx; 2062 srv_log(sess, "EAP: %s", msg); 2063 } 2064 2065 2066 #ifdef CONFIG_ERP 2067 2068 static const char * radius_server_get_erp_domain(void *ctx) 2069 { 2070 struct radius_session *sess = ctx; 2071 struct radius_server_data *data = sess->server; 2072 2073 return data->erp_domain; 2074 } 2075 2076 2077 static struct eap_server_erp_key * 2078 radius_server_erp_get_key(void *ctx, const char *keyname) 2079 { 2080 struct radius_session *sess = ctx; 2081 struct radius_server_data *data = sess->server; 2082 struct eap_server_erp_key *erp; 2083 2084 dl_list_for_each(erp, &data->erp_keys, struct eap_server_erp_key, 2085 list) { 2086 if (os_strcmp(erp->keyname_nai, keyname) == 0) 2087 return erp; 2088 } 2089 2090 return NULL; 2091 } 2092 2093 2094 static int radius_server_erp_add_key(void *ctx, struct eap_server_erp_key *erp) 2095 { 2096 struct radius_session *sess = ctx; 2097 struct radius_server_data *data = sess->server; 2098 2099 dl_list_add(&data->erp_keys, &erp->list); 2100 return 0; 2101 } 2102 2103 #endif /* CONFIG_ERP */ 2104 2105 2106 static const struct eapol_callbacks radius_server_eapol_cb = 2107 { 2108 .get_eap_user = radius_server_get_eap_user, 2109 .get_eap_req_id_text = radius_server_get_eap_req_id_text, 2110 .log_msg = radius_server_log_msg, 2111 #ifdef CONFIG_ERP 2112 .get_erp_send_reauth_start = NULL, 2113 .get_erp_domain = radius_server_get_erp_domain, 2114 .erp_get_key = radius_server_erp_get_key, 2115 .erp_add_key = radius_server_erp_add_key, 2116 #endif /* CONFIG_ERP */ 2117 }; 2118 2119 2120 /** 2121 * radius_server_eap_pending_cb - Pending EAP data notification 2122 * @data: RADIUS server context from radius_server_init() 2123 * @ctx: Pending EAP context pointer 2124 * 2125 * This function is used to notify EAP server module that a pending operation 2126 * has been completed and processing of the EAP session can proceed. 2127 */ 2128 void radius_server_eap_pending_cb(struct radius_server_data *data, void *ctx) 2129 { 2130 struct radius_client *cli; 2131 struct radius_session *s, *sess = NULL; 2132 struct radius_msg *msg; 2133 2134 if (data == NULL) 2135 return; 2136 2137 for (cli = data->clients; cli; cli = cli->next) { 2138 for (s = cli->sessions; s; s = s->next) { 2139 if (s->eap == ctx && s->last_msg) { 2140 sess = s; 2141 break; 2142 } 2143 } 2144 if (sess) 2145 break; 2146 } 2147 2148 if (sess == NULL) { 2149 RADIUS_DEBUG("No session matched callback ctx"); 2150 return; 2151 } 2152 2153 msg = sess->last_msg; 2154 sess->last_msg = NULL; 2155 eap_sm_pending_cb(sess->eap); 2156 if (radius_server_request(data, msg, 2157 (struct sockaddr *) &sess->last_from, 2158 sess->last_fromlen, cli, 2159 sess->last_from_addr, 2160 sess->last_from_port, sess) == -2) 2161 return; /* msg was stored with the session */ 2162 2163 radius_msg_free(msg); 2164 } 2165
