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