| /* |
| * RADIUS authentication server |
| * Copyright (c) 2005-2009, 2011, Jouni Malinen <j@w1.fi> |
| * |
| * This software may be distributed under the terms of the BSD license. |
| * See README for more details. |
| */ |
| |
| #include "includes.h" |
| #include <net/if.h> |
| |
| #include "common.h" |
| #include "radius.h" |
| #include "eloop.h" |
| #include "eap_server/eap.h" |
| #include "radius_server.h" |
| |
| /** |
| * RADIUS_SESSION_TIMEOUT - Session timeout in seconds |
| */ |
| #define RADIUS_SESSION_TIMEOUT 60 |
| |
| /** |
| * RADIUS_MAX_SESSION - Maximum number of active sessions |
| */ |
| #define RADIUS_MAX_SESSION 100 |
| |
| /** |
| * RADIUS_MAX_MSG_LEN - Maximum message length for incoming RADIUS messages |
| */ |
| #define RADIUS_MAX_MSG_LEN 3000 |
| |
| static struct eapol_callbacks radius_server_eapol_cb; |
| |
| struct radius_client; |
| struct radius_server_data; |
| |
| /** |
| * struct radius_server_counters - RADIUS server statistics counters |
| */ |
| struct radius_server_counters { |
| u32 access_requests; |
| u32 invalid_requests; |
| u32 dup_access_requests; |
| u32 access_accepts; |
| u32 access_rejects; |
| u32 access_challenges; |
| u32 malformed_access_requests; |
| u32 bad_authenticators; |
| u32 packets_dropped; |
| u32 unknown_types; |
| }; |
| |
| /** |
| * struct radius_session - Internal RADIUS server data for a session |
| */ |
| struct radius_session { |
| struct radius_session *next; |
| struct radius_client *client; |
| struct radius_server_data *server; |
| unsigned int sess_id; |
| struct eap_sm *eap; |
| struct eap_eapol_interface *eap_if; |
| |
| struct radius_msg *last_msg; |
| char *last_from_addr; |
| int last_from_port; |
| struct sockaddr_storage last_from; |
| socklen_t last_fromlen; |
| u8 last_identifier; |
| struct radius_msg *last_reply; |
| u8 last_authenticator[16]; |
| }; |
| |
| /** |
| * struct radius_client - Internal RADIUS server data for a client |
| */ |
| struct radius_client { |
| struct radius_client *next; |
| struct in_addr addr; |
| struct in_addr mask; |
| #ifdef CONFIG_IPV6 |
| struct in6_addr addr6; |
| struct in6_addr mask6; |
| #endif /* CONFIG_IPV6 */ |
| char *shared_secret; |
| int shared_secret_len; |
| struct radius_session *sessions; |
| struct radius_server_counters counters; |
| }; |
| |
| /** |
| * struct radius_server_data - Internal RADIUS server data |
| */ |
| struct radius_server_data { |
| /** |
| * auth_sock - Socket for RADIUS authentication messages |
| */ |
| int auth_sock; |
| |
| /** |
| * clients - List of authorized RADIUS clients |
| */ |
| struct radius_client *clients; |
| |
| /** |
| * next_sess_id - Next session identifier |
| */ |
| unsigned int next_sess_id; |
| |
| /** |
| * conf_ctx - Context pointer for callbacks |
| * |
| * This is used as the ctx argument in get_eap_user() calls. |
| */ |
| void *conf_ctx; |
| |
| /** |
| * num_sess - Number of active sessions |
| */ |
| int num_sess; |
| |
| /** |
| * eap_sim_db_priv - EAP-SIM/AKA database context |
| * |
| * This is passed to the EAP-SIM/AKA server implementation as a |
| * callback context. |
| */ |
| void *eap_sim_db_priv; |
| |
| /** |
| * ssl_ctx - TLS context |
| * |
| * This is passed to the EAP server implementation as a callback |
| * context for TLS operations. |
| */ |
| void *ssl_ctx; |
| |
| /** |
| * pac_opaque_encr_key - PAC-Opaque encryption key for EAP-FAST |
| * |
| * This parameter is used to set a key for EAP-FAST to encrypt the |
| * PAC-Opaque data. It can be set to %NULL if EAP-FAST is not used. If |
| * set, must point to a 16-octet key. |
| */ |
| u8 *pac_opaque_encr_key; |
| |
| /** |
| * eap_fast_a_id - EAP-FAST authority identity (A-ID) |
| * |
| * If EAP-FAST is not used, this can be set to %NULL. In theory, this |
| * is a variable length field, but due to some existing implementations |
| * requiring A-ID to be 16 octets in length, it is recommended to use |
| * that length for the field to provide interoperability with deployed |
| * peer implementations. |
| */ |
| u8 *eap_fast_a_id; |
| |
| /** |
| * eap_fast_a_id_len - Length of eap_fast_a_id buffer in octets |
| */ |
| size_t eap_fast_a_id_len; |
| |
| /** |
| * eap_fast_a_id_info - EAP-FAST authority identifier information |
| * |
| * This A-ID-Info contains a user-friendly name for the A-ID. For |
| * example, this could be the enterprise and server names in |
| * human-readable format. This field is encoded as UTF-8. If EAP-FAST |
| * is not used, this can be set to %NULL. |
| */ |
| char *eap_fast_a_id_info; |
| |
| /** |
| * eap_fast_prov - EAP-FAST provisioning modes |
| * |
| * 0 = provisioning disabled, 1 = only anonymous provisioning allowed, |
| * 2 = only authenticated provisioning allowed, 3 = both provisioning |
| * modes allowed. |
| */ |
| int eap_fast_prov; |
| |
| /** |
| * pac_key_lifetime - EAP-FAST PAC-Key lifetime in seconds |
| * |
| * This is the hard limit on how long a provisioned PAC-Key can be |
| * used. |
| */ |
| int pac_key_lifetime; |
| |
| /** |
| * pac_key_refresh_time - EAP-FAST PAC-Key refresh time in seconds |
| * |
| * This is a soft limit on the PAC-Key. The server will automatically |
| * generate a new PAC-Key when this number of seconds (or fewer) of the |
| * lifetime remains. |
| */ |
| int pac_key_refresh_time; |
| |
| /** |
| * eap_sim_aka_result_ind - EAP-SIM/AKA protected success indication |
| * |
| * This controls whether the protected success/failure indication |
| * (AT_RESULT_IND) is used with EAP-SIM and EAP-AKA. |
| */ |
| int eap_sim_aka_result_ind; |
| |
| /** |
| * tnc - Trusted Network Connect (TNC) |
| * |
| * This controls whether TNC is enabled and will be required before the |
| * peer is allowed to connect. Note: This is only used with EAP-TTLS |
| * and EAP-FAST. If any other EAP method is enabled, the peer will be |
| * allowed to connect without TNC. |
| */ |
| int tnc; |
| |
| /** |
| * pwd_group - The D-H group assigned for EAP-pwd |
| * |
| * If EAP-pwd is not used it can be set to zero. |
| */ |
| u16 pwd_group; |
| |
| /** |
| * wps - Wi-Fi Protected Setup context |
| * |
| * If WPS is used with an external RADIUS server (which is quite |
| * unlikely configuration), this is used to provide a pointer to WPS |
| * context data. Normally, this can be set to %NULL. |
| */ |
| struct wps_context *wps; |
| |
| /** |
| * ipv6 - Whether to enable IPv6 support in the RADIUS server |
| */ |
| int ipv6; |
| |
| /** |
| * start_time - Timestamp of server start |
| */ |
| struct os_time start_time; |
| |
| /** |
| * counters - Statistics counters for server operations |
| * |
| * These counters are the sum over all clients. |
| */ |
| struct radius_server_counters counters; |
| |
| /** |
| * get_eap_user - Callback for fetching EAP user information |
| * @ctx: Context data from conf_ctx |
| * @identity: User identity |
| * @identity_len: identity buffer length in octets |
| * @phase2: Whether this is for Phase 2 identity |
| * @user: Data structure for filling in the user information |
| * Returns: 0 on success, -1 on failure |
| * |
| * This is used to fetch information from user database. The callback |
| * will fill in information about allowed EAP methods and the user |
| * password. The password field will be an allocated copy of the |
| * password data and RADIUS server will free it after use. |
| */ |
| int (*get_eap_user)(void *ctx, const u8 *identity, size_t identity_len, |
| int phase2, struct eap_user *user); |
| |
| /** |
| * eap_req_id_text - Optional data for EAP-Request/Identity |
| * |
| * This can be used to configure an optional, displayable message that |
| * will be sent in EAP-Request/Identity. This string can contain an |
| * ASCII-0 character (nul) to separate network infromation per RFC |
| * 4284. The actual string length is explicit provided in |
| * eap_req_id_text_len since nul character will not be used as a string |
| * terminator. |
| */ |
| char *eap_req_id_text; |
| |
| /** |
| * eap_req_id_text_len - Length of eap_req_id_text buffer in octets |
| */ |
| size_t eap_req_id_text_len; |
| |
| /* |
| * msg_ctx - Context data for wpa_msg() calls |
| */ |
| void *msg_ctx; |
| |
| #ifdef CONFIG_RADIUS_TEST |
| char *dump_msk_file; |
| #endif /* CONFIG_RADIUS_TEST */ |
| }; |
| |
| |
| extern int wpa_debug_level; |
| |
| #define RADIUS_DEBUG(args...) \ |
| wpa_printf(MSG_DEBUG, "RADIUS SRV: " args) |
| #define RADIUS_ERROR(args...) \ |
| wpa_printf(MSG_ERROR, "RADIUS SRV: " args) |
| #define RADIUS_DUMP(args...) \ |
| wpa_hexdump(MSG_MSGDUMP, "RADIUS SRV: " args) |
| #define RADIUS_DUMP_ASCII(args...) \ |
| wpa_hexdump_ascii(MSG_MSGDUMP, "RADIUS SRV: " args) |
| |
| |
| static void radius_server_session_timeout(void *eloop_ctx, void *timeout_ctx); |
| static void radius_server_session_remove_timeout(void *eloop_ctx, |
| void *timeout_ctx); |
| |
| |
| static struct radius_client * |
| radius_server_get_client(struct radius_server_data *data, struct in_addr *addr, |
| int ipv6) |
| { |
| struct radius_client *client = data->clients; |
| |
| while (client) { |
| #ifdef CONFIG_IPV6 |
| if (ipv6) { |
| struct in6_addr *addr6; |
| int i; |
| |
| addr6 = (struct in6_addr *) addr; |
| for (i = 0; i < 16; i++) { |
| if ((addr6->s6_addr[i] & |
| client->mask6.s6_addr[i]) != |
| (client->addr6.s6_addr[i] & |
| client->mask6.s6_addr[i])) { |
| i = 17; |
| break; |
| } |
| } |
| if (i == 16) { |
| break; |
| } |
| } |
| #endif /* CONFIG_IPV6 */ |
| if (!ipv6 && (client->addr.s_addr & client->mask.s_addr) == |
| (addr->s_addr & client->mask.s_addr)) { |
| break; |
| } |
| |
| client = client->next; |
| } |
| |
| return client; |
| } |
| |
| |
| static struct radius_session * |
| radius_server_get_session(struct radius_client *client, unsigned int sess_id) |
| { |
| struct radius_session *sess = client->sessions; |
| |
| while (sess) { |
| if (sess->sess_id == sess_id) { |
| break; |
| } |
| sess = sess->next; |
| } |
| |
| return sess; |
| } |
| |
| |
| static void radius_server_session_free(struct radius_server_data *data, |
| struct radius_session *sess) |
| { |
| eloop_cancel_timeout(radius_server_session_timeout, data, sess); |
| eloop_cancel_timeout(radius_server_session_remove_timeout, data, sess); |
| eap_server_sm_deinit(sess->eap); |
| radius_msg_free(sess->last_msg); |
| os_free(sess->last_from_addr); |
| radius_msg_free(sess->last_reply); |
| os_free(sess); |
| data->num_sess--; |
| } |
| |
| |
| static void radius_server_session_remove(struct radius_server_data *data, |
| struct radius_session *sess) |
| { |
| struct radius_client *client = sess->client; |
| struct radius_session *session, *prev; |
| |
| eloop_cancel_timeout(radius_server_session_remove_timeout, data, sess); |
| |
| prev = NULL; |
| session = client->sessions; |
| while (session) { |
| if (session == sess) { |
| if (prev == NULL) { |
| client->sessions = sess->next; |
| } else { |
| prev->next = sess->next; |
| } |
| radius_server_session_free(data, sess); |
| break; |
| } |
| prev = session; |
| session = session->next; |
| } |
| } |
| |
| |
| static void radius_server_session_remove_timeout(void *eloop_ctx, |
| void *timeout_ctx) |
| { |
| struct radius_server_data *data = eloop_ctx; |
| struct radius_session *sess = timeout_ctx; |
| RADIUS_DEBUG("Removing completed session 0x%x", sess->sess_id); |
| radius_server_session_remove(data, sess); |
| } |
| |
| |
| static void radius_server_session_timeout(void *eloop_ctx, void *timeout_ctx) |
| { |
| struct radius_server_data *data = eloop_ctx; |
| struct radius_session *sess = timeout_ctx; |
| |
| RADIUS_DEBUG("Timing out authentication session 0x%x", sess->sess_id); |
| radius_server_session_remove(data, sess); |
| } |
| |
| |
| static struct radius_session * |
| radius_server_new_session(struct radius_server_data *data, |
| struct radius_client *client) |
| { |
| struct radius_session *sess; |
| |
| if (data->num_sess >= RADIUS_MAX_SESSION) { |
| RADIUS_DEBUG("Maximum number of existing session - no room " |
| "for a new session"); |
| return NULL; |
| } |
| |
| sess = os_zalloc(sizeof(*sess)); |
| if (sess == NULL) |
| return NULL; |
| |
| sess->server = data; |
| sess->client = client; |
| sess->sess_id = data->next_sess_id++; |
| sess->next = client->sessions; |
| client->sessions = sess; |
| eloop_register_timeout(RADIUS_SESSION_TIMEOUT, 0, |
| radius_server_session_timeout, data, sess); |
| data->num_sess++; |
| return sess; |
| } |
| |
| |
| static struct radius_session * |
| radius_server_get_new_session(struct radius_server_data *data, |
| struct radius_client *client, |
| struct radius_msg *msg) |
| { |
| u8 *user; |
| size_t user_len; |
| int res; |
| struct radius_session *sess; |
| struct eap_config eap_conf; |
| |
| RADIUS_DEBUG("Creating a new session"); |
| |
| user = os_malloc(256); |
| if (user == NULL) { |
| return NULL; |
| } |
| res = radius_msg_get_attr(msg, RADIUS_ATTR_USER_NAME, user, 256); |
| if (res < 0 || res > 256) { |
| RADIUS_DEBUG("Could not get User-Name"); |
| os_free(user); |
| return NULL; |
| } |
| user_len = res; |
| RADIUS_DUMP_ASCII("User-Name", user, user_len); |
| |
| res = data->get_eap_user(data->conf_ctx, user, user_len, 0, NULL); |
| os_free(user); |
| |
| if (res == 0) { |
| RADIUS_DEBUG("Matching user entry found"); |
| sess = radius_server_new_session(data, client); |
| if (sess == NULL) { |
| RADIUS_DEBUG("Failed to create a new session"); |
| return NULL; |
| } |
| } else { |
| RADIUS_DEBUG("User-Name not found from user database"); |
| return NULL; |
| } |
| |
| os_memset(&eap_conf, 0, sizeof(eap_conf)); |
| eap_conf.ssl_ctx = data->ssl_ctx; |
| eap_conf.msg_ctx = data->msg_ctx; |
| eap_conf.eap_sim_db_priv = data->eap_sim_db_priv; |
| eap_conf.backend_auth = TRUE; |
| eap_conf.eap_server = 1; |
| eap_conf.pac_opaque_encr_key = data->pac_opaque_encr_key; |
| eap_conf.eap_fast_a_id = data->eap_fast_a_id; |
| eap_conf.eap_fast_a_id_len = data->eap_fast_a_id_len; |
| eap_conf.eap_fast_a_id_info = data->eap_fast_a_id_info; |
| eap_conf.eap_fast_prov = data->eap_fast_prov; |
| eap_conf.pac_key_lifetime = data->pac_key_lifetime; |
| eap_conf.pac_key_refresh_time = data->pac_key_refresh_time; |
| eap_conf.eap_sim_aka_result_ind = data->eap_sim_aka_result_ind; |
| eap_conf.tnc = data->tnc; |
| eap_conf.wps = data->wps; |
| eap_conf.pwd_group = data->pwd_group; |
| sess->eap = eap_server_sm_init(sess, &radius_server_eapol_cb, |
| &eap_conf); |
| if (sess->eap == NULL) { |
| RADIUS_DEBUG("Failed to initialize EAP state machine for the " |
| "new session"); |
| radius_server_session_free(data, sess); |
| return NULL; |
| } |
| sess->eap_if = eap_get_interface(sess->eap); |
| sess->eap_if->eapRestart = TRUE; |
| sess->eap_if->portEnabled = TRUE; |
| |
| RADIUS_DEBUG("New session 0x%x initialized", sess->sess_id); |
| |
| return sess; |
| } |
| |
| |
| static struct radius_msg * |
| radius_server_encapsulate_eap(struct radius_server_data *data, |
| struct radius_client *client, |
| struct radius_session *sess, |
| struct radius_msg *request) |
| { |
| struct radius_msg *msg; |
| int code; |
| unsigned int sess_id; |
| struct radius_hdr *hdr = radius_msg_get_hdr(request); |
| |
| if (sess->eap_if->eapFail) { |
| sess->eap_if->eapFail = FALSE; |
| code = RADIUS_CODE_ACCESS_REJECT; |
| } else if (sess->eap_if->eapSuccess) { |
| sess->eap_if->eapSuccess = FALSE; |
| code = RADIUS_CODE_ACCESS_ACCEPT; |
| } else { |
| sess->eap_if->eapReq = FALSE; |
| code = RADIUS_CODE_ACCESS_CHALLENGE; |
| } |
| |
| msg = radius_msg_new(code, hdr->identifier); |
| if (msg == NULL) { |
| RADIUS_DEBUG("Failed to allocate reply message"); |
| return NULL; |
| } |
| |
| sess_id = htonl(sess->sess_id); |
| if (code == RADIUS_CODE_ACCESS_CHALLENGE && |
| !radius_msg_add_attr(msg, RADIUS_ATTR_STATE, |
| (u8 *) &sess_id, sizeof(sess_id))) { |
| RADIUS_DEBUG("Failed to add State attribute"); |
| } |
| |
| if (sess->eap_if->eapReqData && |
| !radius_msg_add_eap(msg, wpabuf_head(sess->eap_if->eapReqData), |
| wpabuf_len(sess->eap_if->eapReqData))) { |
| RADIUS_DEBUG("Failed to add EAP-Message attribute"); |
| } |
| |
| if (code == RADIUS_CODE_ACCESS_ACCEPT && sess->eap_if->eapKeyData) { |
| int len; |
| #ifdef CONFIG_RADIUS_TEST |
| if (data->dump_msk_file) { |
| FILE *f; |
| char buf[2 * 64 + 1]; |
| f = fopen(data->dump_msk_file, "a"); |
| if (f) { |
| len = sess->eap_if->eapKeyDataLen; |
| if (len > 64) |
| len = 64; |
| len = wpa_snprintf_hex( |
| buf, sizeof(buf), |
| sess->eap_if->eapKeyData, len); |
| buf[len] = '\0'; |
| fprintf(f, "%s\n", buf); |
| fclose(f); |
| } |
| } |
| #endif /* CONFIG_RADIUS_TEST */ |
| if (sess->eap_if->eapKeyDataLen > 64) { |
| len = 32; |
| } else { |
| len = sess->eap_if->eapKeyDataLen / 2; |
| } |
| if (!radius_msg_add_mppe_keys(msg, hdr->authenticator, |
| (u8 *) client->shared_secret, |
| client->shared_secret_len, |
| sess->eap_if->eapKeyData + len, |
| len, sess->eap_if->eapKeyData, |
| len)) { |
| RADIUS_DEBUG("Failed to add MPPE key attributes"); |
| } |
| } |
| |
| if (radius_msg_copy_attr(msg, request, RADIUS_ATTR_PROXY_STATE) < 0) { |
| RADIUS_DEBUG("Failed to copy Proxy-State attribute(s)"); |
| radius_msg_free(msg); |
| return NULL; |
| } |
| |
| if (radius_msg_finish_srv(msg, (u8 *) client->shared_secret, |
| client->shared_secret_len, |
| hdr->authenticator) < 0) { |
| RADIUS_DEBUG("Failed to add Message-Authenticator attribute"); |
| } |
| |
| return msg; |
| } |
| |
| |
| static int radius_server_reject(struct radius_server_data *data, |
| struct radius_client *client, |
| struct radius_msg *request, |
| struct sockaddr *from, socklen_t fromlen, |
| const char *from_addr, int from_port) |
| { |
| struct radius_msg *msg; |
| int ret = 0; |
| struct eap_hdr eapfail; |
| struct wpabuf *buf; |
| struct radius_hdr *hdr = radius_msg_get_hdr(request); |
| |
| RADIUS_DEBUG("Reject invalid request from %s:%d", |
| from_addr, from_port); |
| |
| msg = radius_msg_new(RADIUS_CODE_ACCESS_REJECT, hdr->identifier); |
| if (msg == NULL) { |
| return -1; |
| } |
| |
| os_memset(&eapfail, 0, sizeof(eapfail)); |
| eapfail.code = EAP_CODE_FAILURE; |
| eapfail.identifier = 0; |
| eapfail.length = host_to_be16(sizeof(eapfail)); |
| |
| if (!radius_msg_add_eap(msg, (u8 *) &eapfail, sizeof(eapfail))) { |
| RADIUS_DEBUG("Failed to add EAP-Message attribute"); |
| } |
| |
| if (radius_msg_copy_attr(msg, request, RADIUS_ATTR_PROXY_STATE) < 0) { |
| RADIUS_DEBUG("Failed to copy Proxy-State attribute(s)"); |
| radius_msg_free(msg); |
| return -1; |
| } |
| |
| if (radius_msg_finish_srv(msg, (u8 *) client->shared_secret, |
| client->shared_secret_len, |
| hdr->authenticator) < |
| 0) { |
| RADIUS_DEBUG("Failed to add Message-Authenticator attribute"); |
| } |
| |
| if (wpa_debug_level <= MSG_MSGDUMP) { |
| radius_msg_dump(msg); |
| } |
| |
| data->counters.access_rejects++; |
| client->counters.access_rejects++; |
| buf = radius_msg_get_buf(msg); |
| if (sendto(data->auth_sock, wpabuf_head(buf), wpabuf_len(buf), 0, |
| (struct sockaddr *) from, sizeof(*from)) < 0) { |
| perror("sendto[RADIUS SRV]"); |
| ret = -1; |
| } |
| |
| radius_msg_free(msg); |
| |
| return ret; |
| } |
| |
| |
| static int radius_server_request(struct radius_server_data *data, |
| struct radius_msg *msg, |
| struct sockaddr *from, socklen_t fromlen, |
| struct radius_client *client, |
| const char *from_addr, int from_port, |
| struct radius_session *force_sess) |
| { |
| struct wpabuf *eap = NULL; |
| int res, state_included = 0; |
| u8 statebuf[4]; |
| unsigned int state; |
| struct radius_session *sess; |
| struct radius_msg *reply; |
| int is_complete = 0; |
| |
| if (force_sess) |
| sess = force_sess; |
| else { |
| res = radius_msg_get_attr(msg, RADIUS_ATTR_STATE, statebuf, |
| sizeof(statebuf)); |
| state_included = res >= 0; |
| if (res == sizeof(statebuf)) { |
| state = WPA_GET_BE32(statebuf); |
| sess = radius_server_get_session(client, state); |
| } else { |
| sess = NULL; |
| } |
| } |
| |
| if (sess) { |
| RADIUS_DEBUG("Request for session 0x%x", sess->sess_id); |
| } else if (state_included) { |
| RADIUS_DEBUG("State attribute included but no session found"); |
| radius_server_reject(data, client, msg, from, fromlen, |
| from_addr, from_port); |
| return -1; |
| } else { |
| sess = radius_server_get_new_session(data, client, msg); |
| if (sess == NULL) { |
| RADIUS_DEBUG("Could not create a new session"); |
| radius_server_reject(data, client, msg, from, fromlen, |
| from_addr, from_port); |
| return -1; |
| } |
| } |
| |
| if (sess->last_from_port == from_port && |
| sess->last_identifier == radius_msg_get_hdr(msg)->identifier && |
| os_memcmp(sess->last_authenticator, |
| radius_msg_get_hdr(msg)->authenticator, 16) == 0) { |
| RADIUS_DEBUG("Duplicate message from %s", from_addr); |
| data->counters.dup_access_requests++; |
| client->counters.dup_access_requests++; |
| |
| if (sess->last_reply) { |
| struct wpabuf *buf; |
| buf = radius_msg_get_buf(sess->last_reply); |
| res = sendto(data->auth_sock, wpabuf_head(buf), |
| wpabuf_len(buf), 0, |
| (struct sockaddr *) from, fromlen); |
| if (res < 0) { |
| perror("sendto[RADIUS SRV]"); |
| } |
| return 0; |
| } |
| |
| RADIUS_DEBUG("No previous reply available for duplicate " |
| "message"); |
| return -1; |
| } |
| |
| eap = radius_msg_get_eap(msg); |
| if (eap == NULL) { |
| RADIUS_DEBUG("No EAP-Message in RADIUS packet from %s", |
| from_addr); |
| data->counters.packets_dropped++; |
| client->counters.packets_dropped++; |
| return -1; |
| } |
| |
| RADIUS_DUMP("Received EAP data", wpabuf_head(eap), wpabuf_len(eap)); |
| |
| /* FIX: if Code is Request, Success, or Failure, send Access-Reject; |
| * RFC3579 Sect. 2.6.2. |
| * Include EAP-Response/Nak with no preferred method if |
| * code == request. |
| * If code is not 1-4, discard the packet silently. |
| * Or is this already done by the EAP state machine? */ |
| |
| wpabuf_free(sess->eap_if->eapRespData); |
| sess->eap_if->eapRespData = eap; |
| sess->eap_if->eapResp = TRUE; |
| eap_server_sm_step(sess->eap); |
| |
| if ((sess->eap_if->eapReq || sess->eap_if->eapSuccess || |
| sess->eap_if->eapFail) && sess->eap_if->eapReqData) { |
| RADIUS_DUMP("EAP data from the state machine", |
| wpabuf_head(sess->eap_if->eapReqData), |
| wpabuf_len(sess->eap_if->eapReqData)); |
| } else if (sess->eap_if->eapFail) { |
| RADIUS_DEBUG("No EAP data from the state machine, but eapFail " |
| "set"); |
| } else if (eap_sm_method_pending(sess->eap)) { |
| radius_msg_free(sess->last_msg); |
| sess->last_msg = msg; |
| sess->last_from_port = from_port; |
| os_free(sess->last_from_addr); |
| sess->last_from_addr = os_strdup(from_addr); |
| sess->last_fromlen = fromlen; |
| os_memcpy(&sess->last_from, from, fromlen); |
| return -2; |
| } else { |
| RADIUS_DEBUG("No EAP data from the state machine - ignore this" |
| " Access-Request silently (assuming it was a " |
| "duplicate)"); |
| data->counters.packets_dropped++; |
| client->counters.packets_dropped++; |
| return -1; |
| } |
| |
| if (sess->eap_if->eapSuccess || sess->eap_if->eapFail) |
| is_complete = 1; |
| |
| reply = radius_server_encapsulate_eap(data, client, sess, msg); |
| |
| if (reply) { |
| struct wpabuf *buf; |
| struct radius_hdr *hdr; |
| |
| RADIUS_DEBUG("Reply to %s:%d", from_addr, from_port); |
| if (wpa_debug_level <= MSG_MSGDUMP) { |
| radius_msg_dump(reply); |
| } |
| |
| switch (radius_msg_get_hdr(reply)->code) { |
| case RADIUS_CODE_ACCESS_ACCEPT: |
| data->counters.access_accepts++; |
| client->counters.access_accepts++; |
| break; |
| case RADIUS_CODE_ACCESS_REJECT: |
| data->counters.access_rejects++; |
| client->counters.access_rejects++; |
| break; |
| case RADIUS_CODE_ACCESS_CHALLENGE: |
| data->counters.access_challenges++; |
| client->counters.access_challenges++; |
| break; |
| } |
| buf = radius_msg_get_buf(reply); |
| res = sendto(data->auth_sock, wpabuf_head(buf), |
| wpabuf_len(buf), 0, |
| (struct sockaddr *) from, fromlen); |
| if (res < 0) { |
| perror("sendto[RADIUS SRV]"); |
| } |
| radius_msg_free(sess->last_reply); |
| sess->last_reply = reply; |
| sess->last_from_port = from_port; |
| hdr = radius_msg_get_hdr(msg); |
| sess->last_identifier = hdr->identifier; |
| os_memcpy(sess->last_authenticator, hdr->authenticator, 16); |
| } else { |
| data->counters.packets_dropped++; |
| client->counters.packets_dropped++; |
| } |
| |
| if (is_complete) { |
| RADIUS_DEBUG("Removing completed session 0x%x after timeout", |
| sess->sess_id); |
| eloop_cancel_timeout(radius_server_session_remove_timeout, |
| data, sess); |
| eloop_register_timeout(10, 0, |
| radius_server_session_remove_timeout, |
| data, sess); |
| } |
| |
| return 0; |
| } |
| |
| |
| static void radius_server_receive_auth(int sock, void *eloop_ctx, |
| void *sock_ctx) |
| { |
| struct radius_server_data *data = eloop_ctx; |
| u8 *buf = NULL; |
| union { |
| struct sockaddr_storage ss; |
| struct sockaddr_in sin; |
| #ifdef CONFIG_IPV6 |
| struct sockaddr_in6 sin6; |
| #endif /* CONFIG_IPV6 */ |
| } from; |
| socklen_t fromlen; |
| int len; |
| struct radius_client *client = NULL; |
| struct radius_msg *msg = NULL; |
| char abuf[50]; |
| int from_port = 0; |
| |
| buf = os_malloc(RADIUS_MAX_MSG_LEN); |
| if (buf == NULL) { |
| goto fail; |
| } |
| |
| fromlen = sizeof(from); |
| len = recvfrom(sock, buf, RADIUS_MAX_MSG_LEN, 0, |
| (struct sockaddr *) &from.ss, &fromlen); |
| if (len < 0) { |
| perror("recvfrom[radius_server]"); |
| goto fail; |
| } |
| |
| #ifdef CONFIG_IPV6 |
| if (data->ipv6) { |
| if (inet_ntop(AF_INET6, &from.sin6.sin6_addr, abuf, |
| sizeof(abuf)) == NULL) |
| abuf[0] = '\0'; |
| from_port = ntohs(from.sin6.sin6_port); |
| RADIUS_DEBUG("Received %d bytes from %s:%d", |
| len, abuf, from_port); |
| |
| client = radius_server_get_client(data, |
| (struct in_addr *) |
| &from.sin6.sin6_addr, 1); |
| } |
| #endif /* CONFIG_IPV6 */ |
| |
| if (!data->ipv6) { |
| os_strlcpy(abuf, inet_ntoa(from.sin.sin_addr), sizeof(abuf)); |
| from_port = ntohs(from.sin.sin_port); |
| RADIUS_DEBUG("Received %d bytes from %s:%d", |
| len, abuf, from_port); |
| |
| client = radius_server_get_client(data, &from.sin.sin_addr, 0); |
| } |
| |
| RADIUS_DUMP("Received data", buf, len); |
| |
| if (client == NULL) { |
| RADIUS_DEBUG("Unknown client %s - packet ignored", abuf); |
| data->counters.invalid_requests++; |
| goto fail; |
| } |
| |
| msg = radius_msg_parse(buf, len); |
| if (msg == NULL) { |
| RADIUS_DEBUG("Parsing incoming RADIUS frame failed"); |
| data->counters.malformed_access_requests++; |
| client->counters.malformed_access_requests++; |
| goto fail; |
| } |
| |
| os_free(buf); |
| buf = NULL; |
| |
| if (wpa_debug_level <= MSG_MSGDUMP) { |
| radius_msg_dump(msg); |
| } |
| |
| if (radius_msg_get_hdr(msg)->code != RADIUS_CODE_ACCESS_REQUEST) { |
| RADIUS_DEBUG("Unexpected RADIUS code %d", |
| radius_msg_get_hdr(msg)->code); |
| data->counters.unknown_types++; |
| client->counters.unknown_types++; |
| goto fail; |
| } |
| |
| data->counters.access_requests++; |
| client->counters.access_requests++; |
| |
| if (radius_msg_verify_msg_auth(msg, (u8 *) client->shared_secret, |
| client->shared_secret_len, NULL)) { |
| RADIUS_DEBUG("Invalid Message-Authenticator from %s", abuf); |
| data->counters.bad_authenticators++; |
| client->counters.bad_authenticators++; |
| goto fail; |
| } |
| |
| if (radius_server_request(data, msg, (struct sockaddr *) &from, |
| fromlen, client, abuf, from_port, NULL) == |
| -2) |
| return; /* msg was stored with the session */ |
| |
| fail: |
| radius_msg_free(msg); |
| os_free(buf); |
| } |
| |
| |
| static int radius_server_disable_pmtu_discovery(int s) |
| { |
| int r = -1; |
| #if defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DONT) |
| /* Turn off Path MTU discovery on IPv4/UDP sockets. */ |
| int action = IP_PMTUDISC_DONT; |
| r = setsockopt(s, IPPROTO_IP, IP_MTU_DISCOVER, &action, |
| sizeof(action)); |
| if (r == -1) |
| wpa_printf(MSG_ERROR, "Failed to set IP_MTU_DISCOVER: " |
| "%s", strerror(errno)); |
| #endif |
| return r; |
| } |
| |
| |
| static int radius_server_open_socket(int port) |
| { |
| int s; |
| struct sockaddr_in addr; |
| |
| s = socket(PF_INET, SOCK_DGRAM, 0); |
| if (s < 0) { |
| perror("socket"); |
| return -1; |
| } |
| |
| radius_server_disable_pmtu_discovery(s); |
| |
| os_memset(&addr, 0, sizeof(addr)); |
| addr.sin_family = AF_INET; |
| addr.sin_port = htons(port); |
| if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) { |
| perror("bind"); |
| close(s); |
| return -1; |
| } |
| |
| return s; |
| } |
| |
| |
| #ifdef CONFIG_IPV6 |
| static int radius_server_open_socket6(int port) |
| { |
| int s; |
| struct sockaddr_in6 addr; |
| |
| s = socket(PF_INET6, SOCK_DGRAM, 0); |
| if (s < 0) { |
| perror("socket[IPv6]"); |
| return -1; |
| } |
| |
| os_memset(&addr, 0, sizeof(addr)); |
| addr.sin6_family = AF_INET6; |
| os_memcpy(&addr.sin6_addr, &in6addr_any, sizeof(in6addr_any)); |
| addr.sin6_port = htons(port); |
| if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) { |
| perror("bind"); |
| close(s); |
| return -1; |
| } |
| |
| return s; |
| } |
| #endif /* CONFIG_IPV6 */ |
| |
| |
| static void radius_server_free_sessions(struct radius_server_data *data, |
| struct radius_session *sessions) |
| { |
| struct radius_session *session, *prev; |
| |
| session = sessions; |
| while (session) { |
| prev = session; |
| session = session->next; |
| radius_server_session_free(data, prev); |
| } |
| } |
| |
| |
| static void radius_server_free_clients(struct radius_server_data *data, |
| struct radius_client *clients) |
| { |
| struct radius_client *client, *prev; |
| |
| client = clients; |
| while (client) { |
| prev = client; |
| client = client->next; |
| |
| radius_server_free_sessions(data, prev->sessions); |
| os_free(prev->shared_secret); |
| os_free(prev); |
| } |
| } |
| |
| |
| static struct radius_client * |
| radius_server_read_clients(const char *client_file, int ipv6) |
| { |
| FILE *f; |
| const int buf_size = 1024; |
| char *buf, *pos; |
| struct radius_client *clients, *tail, *entry; |
| int line = 0, mask, failed = 0, i; |
| struct in_addr addr; |
| #ifdef CONFIG_IPV6 |
| struct in6_addr addr6; |
| #endif /* CONFIG_IPV6 */ |
| unsigned int val; |
| |
| f = fopen(client_file, "r"); |
| if (f == NULL) { |
| RADIUS_ERROR("Could not open client file '%s'", client_file); |
| return NULL; |
| } |
| |
| buf = os_malloc(buf_size); |
| if (buf == NULL) { |
| fclose(f); |
| return NULL; |
| } |
| |
| clients = tail = NULL; |
| while (fgets(buf, buf_size, f)) { |
| /* Configuration file format: |
| * 192.168.1.0/24 secret |
| * 192.168.1.2 secret |
| * fe80::211:22ff:fe33:4455/64 secretipv6 |
| */ |
| line++; |
| buf[buf_size - 1] = '\0'; |
| pos = buf; |
| while (*pos != '\0' && *pos != '\n') |
| pos++; |
| if (*pos == '\n') |
| *pos = '\0'; |
| if (*buf == '\0' || *buf == '#') |
| continue; |
| |
| pos = buf; |
| while ((*pos >= '0' && *pos <= '9') || *pos == '.' || |
| (*pos >= 'a' && *pos <= 'f') || *pos == ':' || |
| (*pos >= 'A' && *pos <= 'F')) { |
| pos++; |
| } |
| |
| if (*pos == '\0') { |
| failed = 1; |
| break; |
| } |
| |
| if (*pos == '/') { |
| char *end; |
| *pos++ = '\0'; |
| mask = strtol(pos, &end, 10); |
| if ((pos == end) || |
| (mask < 0 || mask > (ipv6 ? 128 : 32))) { |
| failed = 1; |
| break; |
| } |
| pos = end; |
| } else { |
| mask = ipv6 ? 128 : 32; |
| *pos++ = '\0'; |
| } |
| |
| if (!ipv6 && inet_aton(buf, &addr) == 0) { |
| failed = 1; |
| break; |
| } |
| #ifdef CONFIG_IPV6 |
| if (ipv6 && inet_pton(AF_INET6, buf, &addr6) <= 0) { |
| if (inet_pton(AF_INET, buf, &addr) <= 0) { |
| failed = 1; |
| break; |
| } |
| /* Convert IPv4 address to IPv6 */ |
| if (mask <= 32) |
| mask += (128 - 32); |
| os_memset(addr6.s6_addr, 0, 10); |
| addr6.s6_addr[10] = 0xff; |
| addr6.s6_addr[11] = 0xff; |
| os_memcpy(addr6.s6_addr + 12, (char *) &addr.s_addr, |
| 4); |
| } |
| #endif /* CONFIG_IPV6 */ |
| |
| while (*pos == ' ' || *pos == '\t') { |
| pos++; |
| } |
| |
| if (*pos == '\0') { |
| failed = 1; |
| break; |
| } |
| |
| entry = os_zalloc(sizeof(*entry)); |
| if (entry == NULL) { |
| failed = 1; |
| break; |
| } |
| entry->shared_secret = os_strdup(pos); |
| if (entry->shared_secret == NULL) { |
| failed = 1; |
| os_free(entry); |
| break; |
| } |
| entry->shared_secret_len = os_strlen(entry->shared_secret); |
| entry->addr.s_addr = addr.s_addr; |
| if (!ipv6) { |
| val = 0; |
| for (i = 0; i < mask; i++) |
| val |= 1 << (31 - i); |
| entry->mask.s_addr = htonl(val); |
| } |
| #ifdef CONFIG_IPV6 |
| if (ipv6) { |
| int offset = mask / 8; |
| |
| os_memcpy(entry->addr6.s6_addr, addr6.s6_addr, 16); |
| os_memset(entry->mask6.s6_addr, 0xff, offset); |
| val = 0; |
| for (i = 0; i < (mask % 8); i++) |
| val |= 1 << (7 - i); |
| if (offset < 16) |
| entry->mask6.s6_addr[offset] = val; |
| } |
| #endif /* CONFIG_IPV6 */ |
| |
| if (tail == NULL) { |
| clients = tail = entry; |
| } else { |
| tail->next = entry; |
| tail = entry; |
| } |
| } |
| |
| if (failed) { |
| RADIUS_ERROR("Invalid line %d in '%s'", line, client_file); |
| radius_server_free_clients(NULL, clients); |
| clients = NULL; |
| } |
| |
| os_free(buf); |
| fclose(f); |
| |
| return clients; |
| } |
| |
| |
| /** |
| * radius_server_init - Initialize RADIUS server |
| * @conf: Configuration for the RADIUS server |
| * Returns: Pointer to private RADIUS server context or %NULL on failure |
| * |
| * This initializes a RADIUS server instance and returns a context pointer that |
| * will be used in other calls to the RADIUS server module. The server can be |
| * deinitialize by calling radius_server_deinit(). |
| */ |
| struct radius_server_data * |
| radius_server_init(struct radius_server_conf *conf) |
| { |
| struct radius_server_data *data; |
| |
| #ifndef CONFIG_IPV6 |
| if (conf->ipv6) { |
| fprintf(stderr, "RADIUS server compiled without IPv6 " |
| "support.\n"); |
| return NULL; |
| } |
| #endif /* CONFIG_IPV6 */ |
| |
| data = os_zalloc(sizeof(*data)); |
| if (data == NULL) |
| return NULL; |
| |
| os_get_time(&data->start_time); |
| data->conf_ctx = conf->conf_ctx; |
| data->eap_sim_db_priv = conf->eap_sim_db_priv; |
| data->ssl_ctx = conf->ssl_ctx; |
| data->msg_ctx = conf->msg_ctx; |
| data->ipv6 = conf->ipv6; |
| if (conf->pac_opaque_encr_key) { |
| data->pac_opaque_encr_key = os_malloc(16); |
| os_memcpy(data->pac_opaque_encr_key, conf->pac_opaque_encr_key, |
| 16); |
| } |
| if (conf->eap_fast_a_id) { |
| data->eap_fast_a_id = os_malloc(conf->eap_fast_a_id_len); |
| if (data->eap_fast_a_id) { |
| os_memcpy(data->eap_fast_a_id, conf->eap_fast_a_id, |
| conf->eap_fast_a_id_len); |
| data->eap_fast_a_id_len = conf->eap_fast_a_id_len; |
| } |
| } |
| if (conf->eap_fast_a_id_info) |
| data->eap_fast_a_id_info = os_strdup(conf->eap_fast_a_id_info); |
| data->eap_fast_prov = conf->eap_fast_prov; |
| data->pac_key_lifetime = conf->pac_key_lifetime; |
| data->pac_key_refresh_time = conf->pac_key_refresh_time; |
| data->get_eap_user = conf->get_eap_user; |
| data->eap_sim_aka_result_ind = conf->eap_sim_aka_result_ind; |
| data->tnc = conf->tnc; |
| data->wps = conf->wps; |
| data->pwd_group = conf->pwd_group; |
| if (conf->eap_req_id_text) { |
| data->eap_req_id_text = os_malloc(conf->eap_req_id_text_len); |
| if (data->eap_req_id_text) { |
| os_memcpy(data->eap_req_id_text, conf->eap_req_id_text, |
| conf->eap_req_id_text_len); |
| data->eap_req_id_text_len = conf->eap_req_id_text_len; |
| } |
| } |
| |
| #ifdef CONFIG_RADIUS_TEST |
| if (conf->dump_msk_file) |
| data->dump_msk_file = os_strdup(conf->dump_msk_file); |
| #endif /* CONFIG_RADIUS_TEST */ |
| |
| data->clients = radius_server_read_clients(conf->client_file, |
| conf->ipv6); |
| if (data->clients == NULL) { |
| printf("No RADIUS clients configured.\n"); |
| radius_server_deinit(data); |
| return NULL; |
| } |
| |
| #ifdef CONFIG_IPV6 |
| if (conf->ipv6) |
| data->auth_sock = radius_server_open_socket6(conf->auth_port); |
| else |
| #endif /* CONFIG_IPV6 */ |
| data->auth_sock = radius_server_open_socket(conf->auth_port); |
| if (data->auth_sock < 0) { |
| printf("Failed to open UDP socket for RADIUS authentication " |
| "server\n"); |
| radius_server_deinit(data); |
| return NULL; |
| } |
| if (eloop_register_read_sock(data->auth_sock, |
| radius_server_receive_auth, |
| data, NULL)) { |
| radius_server_deinit(data); |
| return NULL; |
| } |
| |
| return data; |
| } |
| |
| |
| /** |
| * radius_server_deinit - Deinitialize RADIUS server |
| * @data: RADIUS server context from radius_server_init() |
| */ |
| void radius_server_deinit(struct radius_server_data *data) |
| { |
| if (data == NULL) |
| return; |
| |
| if (data->auth_sock >= 0) { |
| eloop_unregister_read_sock(data->auth_sock); |
| close(data->auth_sock); |
| } |
| |
| radius_server_free_clients(data, data->clients); |
| |
| os_free(data->pac_opaque_encr_key); |
| os_free(data->eap_fast_a_id); |
| os_free(data->eap_fast_a_id_info); |
| os_free(data->eap_req_id_text); |
| #ifdef CONFIG_RADIUS_TEST |
| os_free(data->dump_msk_file); |
| #endif /* CONFIG_RADIUS_TEST */ |
| os_free(data); |
| } |
| |
| |
| /** |
| * radius_server_get_mib - Get RADIUS server MIB information |
| * @data: RADIUS server context from radius_server_init() |
| * @buf: Buffer for returning the MIB data in text format |
| * @buflen: buf length in octets |
| * Returns: Number of octets written into buf |
| */ |
| int radius_server_get_mib(struct radius_server_data *data, char *buf, |
| size_t buflen) |
| { |
| int ret, uptime; |
| unsigned int idx; |
| char *end, *pos; |
| struct os_time now; |
| struct radius_client *cli; |
| |
| /* RFC 2619 - RADIUS Authentication Server MIB */ |
| |
| if (data == NULL || buflen == 0) |
| return 0; |
| |
| pos = buf; |
| end = buf + buflen; |
| |
| os_get_time(&now); |
| uptime = (now.sec - data->start_time.sec) * 100 + |
| ((now.usec - data->start_time.usec) / 10000) % 100; |
| ret = os_snprintf(pos, end - pos, |
| "RADIUS-AUTH-SERVER-MIB\n" |
| "radiusAuthServIdent=hostapd\n" |
| "radiusAuthServUpTime=%d\n" |
| "radiusAuthServResetTime=0\n" |
| "radiusAuthServConfigReset=4\n", |
| uptime); |
| if (ret < 0 || ret >= end - pos) { |
| *pos = '\0'; |
| return pos - buf; |
| } |
| pos += ret; |
| |
| ret = os_snprintf(pos, end - pos, |
| "radiusAuthServTotalAccessRequests=%u\n" |
| "radiusAuthServTotalInvalidRequests=%u\n" |
| "radiusAuthServTotalDupAccessRequests=%u\n" |
| "radiusAuthServTotalAccessAccepts=%u\n" |
| "radiusAuthServTotalAccessRejects=%u\n" |
| "radiusAuthServTotalAccessChallenges=%u\n" |
| "radiusAuthServTotalMalformedAccessRequests=%u\n" |
| "radiusAuthServTotalBadAuthenticators=%u\n" |
| "radiusAuthServTotalPacketsDropped=%u\n" |
| "radiusAuthServTotalUnknownTypes=%u\n", |
| data->counters.access_requests, |
| data->counters.invalid_requests, |
| data->counters.dup_access_requests, |
| data->counters.access_accepts, |
| data->counters.access_rejects, |
| data->counters.access_challenges, |
| data->counters.malformed_access_requests, |
| data->counters.bad_authenticators, |
| data->counters.packets_dropped, |
| data->counters.unknown_types); |
| if (ret < 0 || ret >= end - pos) { |
| *pos = '\0'; |
| return pos - buf; |
| } |
| pos += ret; |
| |
| for (cli = data->clients, idx = 0; cli; cli = cli->next, idx++) { |
| char abuf[50], mbuf[50]; |
| #ifdef CONFIG_IPV6 |
| if (data->ipv6) { |
| if (inet_ntop(AF_INET6, &cli->addr6, abuf, |
| sizeof(abuf)) == NULL) |
| abuf[0] = '\0'; |
| if (inet_ntop(AF_INET6, &cli->mask6, abuf, |
| sizeof(mbuf)) == NULL) |
| mbuf[0] = '\0'; |
| } |
| #endif /* CONFIG_IPV6 */ |
| if (!data->ipv6) { |
| os_strlcpy(abuf, inet_ntoa(cli->addr), sizeof(abuf)); |
| os_strlcpy(mbuf, inet_ntoa(cli->mask), sizeof(mbuf)); |
| } |
| |
| ret = os_snprintf(pos, end - pos, |
| "radiusAuthClientIndex=%u\n" |
| "radiusAuthClientAddress=%s/%s\n" |
| "radiusAuthServAccessRequests=%u\n" |
| "radiusAuthServDupAccessRequests=%u\n" |
| "radiusAuthServAccessAccepts=%u\n" |
| "radiusAuthServAccessRejects=%u\n" |
| "radiusAuthServAccessChallenges=%u\n" |
| "radiusAuthServMalformedAccessRequests=%u\n" |
| "radiusAuthServBadAuthenticators=%u\n" |
| "radiusAuthServPacketsDropped=%u\n" |
| "radiusAuthServUnknownTypes=%u\n", |
| idx, |
| abuf, mbuf, |
| cli->counters.access_requests, |
| cli->counters.dup_access_requests, |
| cli->counters.access_accepts, |
| cli->counters.access_rejects, |
| cli->counters.access_challenges, |
| cli->counters.malformed_access_requests, |
| cli->counters.bad_authenticators, |
| cli->counters.packets_dropped, |
| cli->counters.unknown_types); |
| if (ret < 0 || ret >= end - pos) { |
| *pos = '\0'; |
| return pos - buf; |
| } |
| pos += ret; |
| } |
| |
| return pos - buf; |
| } |
| |
| |
| static int radius_server_get_eap_user(void *ctx, const u8 *identity, |
| size_t identity_len, int phase2, |
| struct eap_user *user) |
| { |
| struct radius_session *sess = ctx; |
| struct radius_server_data *data = sess->server; |
| |
| return data->get_eap_user(data->conf_ctx, identity, identity_len, |
| phase2, user); |
| } |
| |
| |
| static const char * radius_server_get_eap_req_id_text(void *ctx, size_t *len) |
| { |
| struct radius_session *sess = ctx; |
| struct radius_server_data *data = sess->server; |
| *len = data->eap_req_id_text_len; |
| return data->eap_req_id_text; |
| } |
| |
| |
| static struct eapol_callbacks radius_server_eapol_cb = |
| { |
| .get_eap_user = radius_server_get_eap_user, |
| .get_eap_req_id_text = radius_server_get_eap_req_id_text, |
| }; |
| |
| |
| /** |
| * radius_server_eap_pending_cb - Pending EAP data notification |
| * @data: RADIUS server context from radius_server_init() |
| * @ctx: Pending EAP context pointer |
| * |
| * This function is used to notify EAP server module that a pending operation |
| * has been completed and processing of the EAP session can proceed. |
| */ |
| void radius_server_eap_pending_cb(struct radius_server_data *data, void *ctx) |
| { |
| struct radius_client *cli; |
| struct radius_session *s, *sess = NULL; |
| struct radius_msg *msg; |
| |
| if (data == NULL) |
| return; |
| |
| for (cli = data->clients; cli; cli = cli->next) { |
| for (s = cli->sessions; s; s = s->next) { |
| if (s->eap == ctx && s->last_msg) { |
| sess = s; |
| break; |
| } |
| if (sess) |
| break; |
| } |
| if (sess) |
| break; |
| } |
| |
| if (sess == NULL) { |
| RADIUS_DEBUG("No session matched callback ctx"); |
| return; |
| } |
| |
| msg = sess->last_msg; |
| sess->last_msg = NULL; |
| eap_sm_pending_cb(sess->eap); |
| if (radius_server_request(data, msg, |
| (struct sockaddr *) &sess->last_from, |
| sess->last_fromlen, cli, |
| sess->last_from_addr, |
| sess->last_from_port, sess) == -2) |
| return; /* msg was stored with the session */ |
| |
| radius_msg_free(msg); |
| } |