diff options
Diffstat (limited to 'contrib/wpa_supplicant/radius_client.c')
-rw-r--r-- | contrib/wpa_supplicant/radius_client.c | 1219 |
1 files changed, 0 insertions, 1219 deletions
diff --git a/contrib/wpa_supplicant/radius_client.c b/contrib/wpa_supplicant/radius_client.c deleted file mode 100644 index 81cd9c5..0000000 --- a/contrib/wpa_supplicant/radius_client.c +++ /dev/null @@ -1,1219 +0,0 @@ -/* - * hostapd / RADIUS client - * Copyright (c) 2002-2005, Jouni Malinen <j@w1.fi> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * Alternatively, this software may be distributed under the terms of BSD - * license. - * - * See README and COPYING for more details. - */ - -#include "includes.h" - -#include "hostapd.h" -#include "radius.h" -#include "radius_client.h" -#include "eloop.h" - -/* Defaults for RADIUS retransmit values (exponential backoff) */ -#define RADIUS_CLIENT_FIRST_WAIT 3 /* seconds */ -#define RADIUS_CLIENT_MAX_WAIT 120 /* seconds */ -#define RADIUS_CLIENT_MAX_RETRIES 10 /* maximum number of retransmit attempts - * before entry is removed from retransmit - * list */ -#define RADIUS_CLIENT_MAX_ENTRIES 30 /* maximum number of entries in retransmit - * list (oldest will be removed, if this - * limit is exceeded) */ -#define RADIUS_CLIENT_NUM_FAILOVER 4 /* try to change RADIUS server after this - * many failed retry attempts */ - - -struct radius_rx_handler { - RadiusRxResult (*handler)(struct radius_msg *msg, - struct radius_msg *req, - u8 *shared_secret, size_t shared_secret_len, - void *data); - void *data; -}; - - -/* RADIUS message retransmit list */ -struct radius_msg_list { - u8 addr[ETH_ALEN]; /* STA/client address; used to find RADIUS messages - * for the same STA. */ - struct radius_msg *msg; - RadiusType msg_type; - os_time_t first_try; - os_time_t next_try; - int attempts; - int next_wait; - struct os_time last_attempt; - - u8 *shared_secret; - size_t shared_secret_len; - - /* TODO: server config with failover to backup server(s) */ - - struct radius_msg_list *next; -}; - - -struct radius_client_data { - void *ctx; - struct hostapd_radius_servers *conf; - - int auth_serv_sock; /* socket for authentication RADIUS messages */ - int acct_serv_sock; /* socket for accounting RADIUS messages */ - int auth_serv_sock6; - int acct_serv_sock6; - int auth_sock; /* currently used socket */ - int acct_sock; /* currently used socket */ - - struct radius_rx_handler *auth_handlers; - size_t num_auth_handlers; - struct radius_rx_handler *acct_handlers; - size_t num_acct_handlers; - - struct radius_msg_list *msgs; - size_t num_msgs; - - u8 next_radius_identifier; -}; - - -static int -radius_change_server(struct radius_client_data *radius, - struct hostapd_radius_server *nserv, - struct hostapd_radius_server *oserv, - int sock, int sock6, int auth); -static int radius_client_init_acct(struct radius_client_data *radius); -static int radius_client_init_auth(struct radius_client_data *radius); - - -static void radius_client_msg_free(struct radius_msg_list *req) -{ - radius_msg_free(req->msg); - os_free(req->msg); - os_free(req); -} - - -int radius_client_register(struct radius_client_data *radius, - RadiusType msg_type, - RadiusRxResult (*handler)(struct radius_msg *msg, - struct radius_msg *req, - u8 *shared_secret, - size_t shared_secret_len, - void *data), - void *data) -{ - struct radius_rx_handler **handlers, *newh; - size_t *num; - - if (msg_type == RADIUS_ACCT) { - handlers = &radius->acct_handlers; - num = &radius->num_acct_handlers; - } else { - handlers = &radius->auth_handlers; - num = &radius->num_auth_handlers; - } - - newh = os_realloc(*handlers, - (*num + 1) * sizeof(struct radius_rx_handler)); - if (newh == NULL) - return -1; - - newh[*num].handler = handler; - newh[*num].data = data; - (*num)++; - *handlers = newh; - - return 0; -} - - -static void radius_client_handle_send_error(struct radius_client_data *radius, - int s, RadiusType msg_type) -{ -#ifndef CONFIG_NATIVE_WINDOWS - int _errno = errno; - perror("send[RADIUS]"); - if (_errno == ENOTCONN || _errno == EDESTADDRREQ || _errno == EINVAL || - _errno == EBADF) { - hostapd_logger(radius->ctx, NULL, HOSTAPD_MODULE_RADIUS, - HOSTAPD_LEVEL_INFO, - "Send failed - maybe interface status changed -" - " try to connect again"); - eloop_unregister_read_sock(s); - close(s); - if (msg_type == RADIUS_ACCT || msg_type == RADIUS_ACCT_INTERIM) - radius_client_init_acct(radius); - else - radius_client_init_auth(radius); - } -#endif /* CONFIG_NATIVE_WINDOWS */ -} - - -static int radius_client_retransmit(struct radius_client_data *radius, - struct radius_msg_list *entry, - os_time_t now) -{ - struct hostapd_radius_servers *conf = radius->conf; - int s; - - if (entry->msg_type == RADIUS_ACCT || - entry->msg_type == RADIUS_ACCT_INTERIM) { - s = radius->acct_sock; - if (entry->attempts == 0) - conf->acct_server->requests++; - else { - conf->acct_server->timeouts++; - conf->acct_server->retransmissions++; - } - } else { - s = radius->auth_sock; - if (entry->attempts == 0) - conf->auth_server->requests++; - else { - conf->auth_server->timeouts++; - conf->auth_server->retransmissions++; - } - } - - /* retransmit; remove entry if too many attempts */ - entry->attempts++; - hostapd_logger(radius->ctx, entry->addr, HOSTAPD_MODULE_RADIUS, - HOSTAPD_LEVEL_DEBUG, "Resending RADIUS message (id=%d)", - entry->msg->hdr->identifier); - - os_get_time(&entry->last_attempt); - if (send(s, entry->msg->buf, entry->msg->buf_used, 0) < 0) - radius_client_handle_send_error(radius, s, entry->msg_type); - - entry->next_try = now + entry->next_wait; - entry->next_wait *= 2; - if (entry->next_wait > RADIUS_CLIENT_MAX_WAIT) - entry->next_wait = RADIUS_CLIENT_MAX_WAIT; - if (entry->attempts >= RADIUS_CLIENT_MAX_RETRIES) { - printf("Removing un-ACKed RADIUS message due to too many " - "failed retransmit attempts\n"); - return 1; - } - - return 0; -} - - -static void radius_client_timer(void *eloop_ctx, void *timeout_ctx) -{ - struct radius_client_data *radius = eloop_ctx; - struct hostapd_radius_servers *conf = radius->conf; - struct os_time now; - os_time_t first; - struct radius_msg_list *entry, *prev, *tmp; - int auth_failover = 0, acct_failover = 0; - char abuf[50]; - - entry = radius->msgs; - if (!entry) - return; - - os_get_time(&now); - first = 0; - - prev = NULL; - while (entry) { - if (now.sec >= entry->next_try && - radius_client_retransmit(radius, entry, now.sec)) { - if (prev) - prev->next = entry->next; - else - radius->msgs = entry->next; - - tmp = entry; - entry = entry->next; - radius_client_msg_free(tmp); - radius->num_msgs--; - continue; - } - - if (entry->attempts > RADIUS_CLIENT_NUM_FAILOVER) { - if (entry->msg_type == RADIUS_ACCT || - entry->msg_type == RADIUS_ACCT_INTERIM) - acct_failover++; - else - auth_failover++; - } - - if (first == 0 || entry->next_try < first) - first = entry->next_try; - - prev = entry; - entry = entry->next; - } - - if (radius->msgs) { - if (first < now.sec) - first = now.sec; - eloop_register_timeout(first - now.sec, 0, - radius_client_timer, radius, NULL); - hostapd_logger(radius->ctx, NULL, HOSTAPD_MODULE_RADIUS, - HOSTAPD_LEVEL_DEBUG, "Next RADIUS client " - "retransmit in %ld seconds", - (long int) (first - now.sec)); - } - - if (auth_failover && conf->num_auth_servers > 1) { - struct hostapd_radius_server *next, *old; - old = conf->auth_server; - hostapd_logger(radius->ctx, NULL, HOSTAPD_MODULE_RADIUS, - HOSTAPD_LEVEL_NOTICE, - "No response from Authentication server " - "%s:%d - failover", - hostapd_ip_txt(&old->addr, abuf, sizeof(abuf)), - old->port); - - for (entry = radius->msgs; entry; entry = entry->next) { - if (entry->msg_type == RADIUS_AUTH) - old->timeouts++; - } - - next = old + 1; - if (next > &(conf->auth_servers[conf->num_auth_servers - 1])) - next = conf->auth_servers; - conf->auth_server = next; - radius_change_server(radius, next, old, - radius->auth_serv_sock, - radius->auth_serv_sock6, 1); - } - - if (acct_failover && conf->num_acct_servers > 1) { - struct hostapd_radius_server *next, *old; - old = conf->acct_server; - hostapd_logger(radius->ctx, NULL, HOSTAPD_MODULE_RADIUS, - HOSTAPD_LEVEL_NOTICE, - "No response from Accounting server " - "%s:%d - failover", - hostapd_ip_txt(&old->addr, abuf, sizeof(abuf)), - old->port); - - for (entry = radius->msgs; entry; entry = entry->next) { - if (entry->msg_type == RADIUS_ACCT || - entry->msg_type == RADIUS_ACCT_INTERIM) - old->timeouts++; - } - - next = old + 1; - if (next > &conf->acct_servers[conf->num_acct_servers - 1]) - next = conf->acct_servers; - conf->acct_server = next; - radius_change_server(radius, next, old, - radius->acct_serv_sock, - radius->acct_serv_sock6, 0); - } -} - - -static void radius_client_update_timeout(struct radius_client_data *radius) -{ - struct os_time now; - os_time_t first; - struct radius_msg_list *entry; - - eloop_cancel_timeout(radius_client_timer, radius, NULL); - - if (radius->msgs == NULL) { - return; - } - - first = 0; - for (entry = radius->msgs; entry; entry = entry->next) { - if (first == 0 || entry->next_try < first) - first = entry->next_try; - } - - os_get_time(&now); - if (first < now.sec) - first = now.sec; - eloop_register_timeout(first - now.sec, 0, radius_client_timer, radius, - NULL); - hostapd_logger(radius->ctx, NULL, HOSTAPD_MODULE_RADIUS, - HOSTAPD_LEVEL_DEBUG, "Next RADIUS client retransmit in" - " %ld seconds\n", (long int) (first - now.sec)); -} - - -static void radius_client_list_add(struct radius_client_data *radius, - struct radius_msg *msg, - RadiusType msg_type, u8 *shared_secret, - size_t shared_secret_len, const u8 *addr) -{ - struct radius_msg_list *entry, *prev; - - if (eloop_terminated()) { - /* No point in adding entries to retransmit queue since event - * loop has already been terminated. */ - radius_msg_free(msg); - os_free(msg); - return; - } - - entry = wpa_zalloc(sizeof(*entry)); - if (entry == NULL) { - printf("Failed to add RADIUS packet into retransmit list\n"); - radius_msg_free(msg); - os_free(msg); - return; - } - - if (addr) - os_memcpy(entry->addr, addr, ETH_ALEN); - entry->msg = msg; - entry->msg_type = msg_type; - entry->shared_secret = shared_secret; - entry->shared_secret_len = shared_secret_len; - os_get_time(&entry->last_attempt); - entry->first_try = entry->last_attempt.sec; - entry->next_try = entry->first_try + RADIUS_CLIENT_FIRST_WAIT; - entry->attempts = 1; - entry->next_wait = RADIUS_CLIENT_FIRST_WAIT * 2; - entry->next = radius->msgs; - radius->msgs = entry; - radius_client_update_timeout(radius); - - if (radius->num_msgs >= RADIUS_CLIENT_MAX_ENTRIES) { - printf("Removing the oldest un-ACKed RADIUS packet due to " - "retransmit list limits.\n"); - prev = NULL; - while (entry->next) { - prev = entry; - entry = entry->next; - } - if (prev) { - prev->next = NULL; - radius_client_msg_free(entry); - } - } else - radius->num_msgs++; -} - - -static void radius_client_list_del(struct radius_client_data *radius, - RadiusType msg_type, const u8 *addr) -{ - struct radius_msg_list *entry, *prev, *tmp; - - if (addr == NULL) - return; - - entry = radius->msgs; - prev = NULL; - while (entry) { - if (entry->msg_type == msg_type && - os_memcmp(entry->addr, addr, ETH_ALEN) == 0) { - if (prev) - prev->next = entry->next; - else - radius->msgs = entry->next; - tmp = entry; - entry = entry->next; - hostapd_logger(radius->ctx, addr, - HOSTAPD_MODULE_RADIUS, - HOSTAPD_LEVEL_DEBUG, - "Removing matching RADIUS message"); - radius_client_msg_free(tmp); - radius->num_msgs--; - continue; - } - prev = entry; - entry = entry->next; - } -} - - -int radius_client_send(struct radius_client_data *radius, - struct radius_msg *msg, RadiusType msg_type, - const u8 *addr) -{ - struct hostapd_radius_servers *conf = radius->conf; - u8 *shared_secret; - size_t shared_secret_len; - char *name; - int s, res; - - if (msg_type == RADIUS_ACCT_INTERIM) { - /* Remove any pending interim acct update for the same STA. */ - radius_client_list_del(radius, msg_type, addr); - } - - if (msg_type == RADIUS_ACCT || msg_type == RADIUS_ACCT_INTERIM) { - if (conf->acct_server == NULL) { - hostapd_logger(radius->ctx, NULL, - HOSTAPD_MODULE_RADIUS, - HOSTAPD_LEVEL_INFO, - "No accounting server configured"); - return -1; - } - shared_secret = conf->acct_server->shared_secret; - shared_secret_len = conf->acct_server->shared_secret_len; - radius_msg_finish_acct(msg, shared_secret, shared_secret_len); - name = "accounting"; - s = radius->acct_sock; - conf->acct_server->requests++; - } else { - if (conf->auth_server == NULL) { - hostapd_logger(radius->ctx, NULL, - HOSTAPD_MODULE_RADIUS, - HOSTAPD_LEVEL_INFO, - "No authentication server configured"); - return -1; - } - shared_secret = conf->auth_server->shared_secret; - shared_secret_len = conf->auth_server->shared_secret_len; - radius_msg_finish(msg, shared_secret, shared_secret_len); - name = "authentication"; - s = radius->auth_sock; - conf->auth_server->requests++; - } - - hostapd_logger(radius->ctx, NULL, HOSTAPD_MODULE_RADIUS, - HOSTAPD_LEVEL_DEBUG, "Sending RADIUS message to %s " - "server", name); - if (conf->msg_dumps) - radius_msg_dump(msg); - - res = send(s, msg->buf, msg->buf_used, 0); - if (res < 0) - radius_client_handle_send_error(radius, s, msg_type); - - radius_client_list_add(radius, msg, msg_type, shared_secret, - shared_secret_len, addr); - - return res; -} - - -static void radius_client_receive(int sock, void *eloop_ctx, void *sock_ctx) -{ - struct radius_client_data *radius = eloop_ctx; - struct hostapd_radius_servers *conf = radius->conf; - RadiusType msg_type = (RadiusType) sock_ctx; - int len, roundtrip; - unsigned char buf[3000]; - struct radius_msg *msg; - struct radius_rx_handler *handlers; - size_t num_handlers, i; - struct radius_msg_list *req, *prev_req; - struct os_time now; - struct hostapd_radius_server *rconf; - int invalid_authenticator = 0; - - if (msg_type == RADIUS_ACCT) { - handlers = radius->acct_handlers; - num_handlers = radius->num_acct_handlers; - rconf = conf->acct_server; - } else { - handlers = radius->auth_handlers; - num_handlers = radius->num_auth_handlers; - rconf = conf->auth_server; - } - - len = recv(sock, buf, sizeof(buf), MSG_DONTWAIT); - if (len < 0) { - perror("recv[RADIUS]"); - return; - } - hostapd_logger(radius->ctx, NULL, HOSTAPD_MODULE_RADIUS, - HOSTAPD_LEVEL_DEBUG, "Received %d bytes from RADIUS " - "server", len); - if (len == sizeof(buf)) { - printf("Possibly too long UDP frame for our buffer - " - "dropping it\n"); - return; - } - - msg = radius_msg_parse(buf, len); - if (msg == NULL) { - printf("Parsing incoming RADIUS frame failed\n"); - rconf->malformed_responses++; - return; - } - - hostapd_logger(radius->ctx, NULL, HOSTAPD_MODULE_RADIUS, - HOSTAPD_LEVEL_DEBUG, "Received RADIUS message"); - if (conf->msg_dumps) - radius_msg_dump(msg); - - switch (msg->hdr->code) { - case RADIUS_CODE_ACCESS_ACCEPT: - rconf->access_accepts++; - break; - case RADIUS_CODE_ACCESS_REJECT: - rconf->access_rejects++; - break; - case RADIUS_CODE_ACCESS_CHALLENGE: - rconf->access_challenges++; - break; - case RADIUS_CODE_ACCOUNTING_RESPONSE: - rconf->responses++; - break; - } - - prev_req = NULL; - req = radius->msgs; - while (req) { - /* TODO: also match by src addr:port of the packet when using - * alternative RADIUS servers (?) */ - if ((req->msg_type == msg_type || - (req->msg_type == RADIUS_ACCT_INTERIM && - msg_type == RADIUS_ACCT)) && - req->msg->hdr->identifier == msg->hdr->identifier) - break; - - prev_req = req; - req = req->next; - } - - if (req == NULL) { - hostapd_logger(radius->ctx, NULL, HOSTAPD_MODULE_RADIUS, - HOSTAPD_LEVEL_DEBUG, - "No matching RADIUS request found (type=%d " - "id=%d) - dropping packet", - msg_type, msg->hdr->identifier); - goto fail; - } - - os_get_time(&now); - roundtrip = (now.sec - req->last_attempt.sec) * 100 + - (now.usec - req->last_attempt.usec) / 10000; - hostapd_logger(radius->ctx, req->addr, HOSTAPD_MODULE_RADIUS, - HOSTAPD_LEVEL_DEBUG, - "Received RADIUS packet matched with a pending " - "request, round trip time %d.%02d sec", - roundtrip / 100, roundtrip % 100); - rconf->round_trip_time = roundtrip; - - /* Remove ACKed RADIUS packet from retransmit list */ - if (prev_req) - prev_req->next = req->next; - else - radius->msgs = req->next; - radius->num_msgs--; - - for (i = 0; i < num_handlers; i++) { - RadiusRxResult res; - res = handlers[i].handler(msg, req->msg, req->shared_secret, - req->shared_secret_len, - handlers[i].data); - switch (res) { - case RADIUS_RX_PROCESSED: - radius_msg_free(msg); - os_free(msg); - /* continue */ - case RADIUS_RX_QUEUED: - radius_client_msg_free(req); - return; - case RADIUS_RX_INVALID_AUTHENTICATOR: - invalid_authenticator++; - /* continue */ - case RADIUS_RX_UNKNOWN: - /* continue with next handler */ - break; - } - } - - if (invalid_authenticator) - rconf->bad_authenticators++; - else - rconf->unknown_types++; - hostapd_logger(radius->ctx, req->addr, HOSTAPD_MODULE_RADIUS, - HOSTAPD_LEVEL_DEBUG, "No RADIUS RX handler found " - "(type=%d code=%d id=%d)%s - dropping packet", - msg_type, msg->hdr->code, msg->hdr->identifier, - invalid_authenticator ? " [INVALID AUTHENTICATOR]" : - ""); - radius_client_msg_free(req); - - fail: - radius_msg_free(msg); - os_free(msg); -} - - -u8 radius_client_get_id(struct radius_client_data *radius) -{ - struct radius_msg_list *entry, *prev, *_remove; - u8 id = radius->next_radius_identifier++; - - /* remove entries with matching id from retransmit list to avoid - * using new reply from the RADIUS server with an old request */ - entry = radius->msgs; - prev = NULL; - while (entry) { - if (entry->msg->hdr->identifier == id) { - hostapd_logger(radius->ctx, entry->addr, - HOSTAPD_MODULE_RADIUS, - HOSTAPD_LEVEL_DEBUG, - "Removing pending RADIUS message, " - "since its id (%d) is reused", id); - if (prev) - prev->next = entry->next; - else - radius->msgs = entry->next; - _remove = entry; - } else { - _remove = NULL; - prev = entry; - } - entry = entry->next; - - if (_remove) - radius_client_msg_free(_remove); - } - - return id; -} - - -void radius_client_flush(struct radius_client_data *radius, int only_auth) -{ - struct radius_msg_list *entry, *prev, *tmp; - - if (!radius) - return; - - prev = NULL; - entry = radius->msgs; - - while (entry) { - if (!only_auth || entry->msg_type == RADIUS_AUTH) { - if (prev) - prev->next = entry->next; - else - radius->msgs = entry->next; - - tmp = entry; - entry = entry->next; - radius_client_msg_free(tmp); - radius->num_msgs--; - } else { - prev = entry; - entry = entry->next; - } - } - - if (radius->msgs == NULL) - eloop_cancel_timeout(radius_client_timer, radius, NULL); -} - - -void radius_client_update_acct_msgs(struct radius_client_data *radius, - u8 *shared_secret, - size_t shared_secret_len) -{ - struct radius_msg_list *entry; - - if (!radius) - return; - - for (entry = radius->msgs; entry; entry = entry->next) { - if (entry->msg_type == RADIUS_ACCT) { - entry->shared_secret = shared_secret; - entry->shared_secret_len = shared_secret_len; - radius_msg_finish_acct(entry->msg, shared_secret, - shared_secret_len); - } - } -} - - -static int -radius_change_server(struct radius_client_data *radius, - struct hostapd_radius_server *nserv, - struct hostapd_radius_server *oserv, - int sock, int sock6, int auth) -{ - struct sockaddr_in serv; -#ifdef CONFIG_IPV6 - struct sockaddr_in6 serv6; -#endif /* CONFIG_IPV6 */ - struct sockaddr *addr; - socklen_t addrlen; - char abuf[50]; - int sel_sock; - struct radius_msg_list *entry; - - hostapd_logger(radius->ctx, NULL, HOSTAPD_MODULE_RADIUS, - HOSTAPD_LEVEL_INFO, - "%s server %s:%d", - auth ? "Authentication" : "Accounting", - hostapd_ip_txt(&nserv->addr, abuf, sizeof(abuf)), - nserv->port); - - if (!oserv || nserv->shared_secret_len != oserv->shared_secret_len || - os_memcmp(nserv->shared_secret, oserv->shared_secret, - nserv->shared_secret_len) != 0) { - /* Pending RADIUS packets used different shared secret, so - * they need to be modified. Update accounting message - * authenticators here. Authentication messages are removed - * since they would require more changes and the new RADIUS - * server may not be prepared to receive them anyway due to - * missing state information. Client will likely retry - * authentication, so this should not be an issue. */ - if (auth) - radius_client_flush(radius, 1); - else { - radius_client_update_acct_msgs( - radius, nserv->shared_secret, - nserv->shared_secret_len); - } - } - - /* Reset retry counters for the new server */ - for (entry = radius->msgs; entry; entry = entry->next) { - if ((auth && entry->msg_type != RADIUS_AUTH) || - (!auth && entry->msg_type != RADIUS_ACCT)) - continue; - entry->next_try = entry->first_try + RADIUS_CLIENT_FIRST_WAIT; - entry->attempts = 0; - entry->next_wait = RADIUS_CLIENT_FIRST_WAIT * 2; - } - - if (radius->msgs) { - eloop_cancel_timeout(radius_client_timer, radius, NULL); - eloop_register_timeout(RADIUS_CLIENT_FIRST_WAIT, 0, - radius_client_timer, radius, NULL); - } - - switch (nserv->addr.af) { - case AF_INET: - os_memset(&serv, 0, sizeof(serv)); - serv.sin_family = AF_INET; - serv.sin_addr.s_addr = nserv->addr.u.v4.s_addr; - serv.sin_port = htons(nserv->port); - addr = (struct sockaddr *) &serv; - addrlen = sizeof(serv); - sel_sock = sock; - break; -#ifdef CONFIG_IPV6 - case AF_INET6: - os_memset(&serv6, 0, sizeof(serv6)); - serv6.sin6_family = AF_INET6; - os_memcpy(&serv6.sin6_addr, &nserv->addr.u.v6, - sizeof(struct in6_addr)); - serv6.sin6_port = htons(nserv->port); - addr = (struct sockaddr *) &serv6; - addrlen = sizeof(serv6); - sel_sock = sock6; - break; -#endif /* CONFIG_IPV6 */ - default: - return -1; - } - - if (connect(sel_sock, addr, addrlen) < 0) { - perror("connect[radius]"); - return -1; - } - - if (auth) - radius->auth_sock = sel_sock; - else - radius->acct_sock = sel_sock; - - return 0; -} - - -static void radius_retry_primary_timer(void *eloop_ctx, void *timeout_ctx) -{ - struct radius_client_data *radius = eloop_ctx; - struct hostapd_radius_servers *conf = radius->conf; - struct hostapd_radius_server *oserv; - - if (radius->auth_sock >= 0 && conf->auth_servers && - conf->auth_server != conf->auth_servers) { - oserv = conf->auth_server; - conf->auth_server = conf->auth_servers; - radius_change_server(radius, conf->auth_server, oserv, - radius->auth_serv_sock, - radius->auth_serv_sock6, 1); - } - - if (radius->acct_sock >= 0 && conf->acct_servers && - conf->acct_server != conf->acct_servers) { - oserv = conf->acct_server; - conf->acct_server = conf->acct_servers; - radius_change_server(radius, conf->acct_server, oserv, - radius->acct_serv_sock, - radius->acct_serv_sock6, 0); - } - - if (conf->retry_primary_interval) - eloop_register_timeout(conf->retry_primary_interval, 0, - radius_retry_primary_timer, radius, - NULL); -} - - -static int radius_client_init_auth(struct radius_client_data *radius) -{ - struct hostapd_radius_servers *conf = radius->conf; - int ok = 0; - - radius->auth_serv_sock = socket(PF_INET, SOCK_DGRAM, 0); - if (radius->auth_serv_sock < 0) - perror("socket[PF_INET,SOCK_DGRAM]"); - else - ok++; - -#ifdef CONFIG_IPV6 - radius->auth_serv_sock6 = socket(PF_INET6, SOCK_DGRAM, 0); - if (radius->auth_serv_sock6 < 0) - perror("socket[PF_INET6,SOCK_DGRAM]"); - else - ok++; -#endif /* CONFIG_IPV6 */ - - if (ok == 0) - return -1; - - radius_change_server(radius, conf->auth_server, NULL, - radius->auth_serv_sock, radius->auth_serv_sock6, - 1); - - if (radius->auth_serv_sock >= 0 && - eloop_register_read_sock(radius->auth_serv_sock, - radius_client_receive, radius, - (void *) RADIUS_AUTH)) { - printf("Could not register read socket for authentication " - "server\n"); - return -1; - } - -#ifdef CONFIG_IPV6 - if (radius->auth_serv_sock6 >= 0 && - eloop_register_read_sock(radius->auth_serv_sock6, - radius_client_receive, radius, - (void *) RADIUS_AUTH)) { - printf("Could not register read socket for authentication " - "server\n"); - return -1; - } -#endif /* CONFIG_IPV6 */ - - return 0; -} - - -static int radius_client_init_acct(struct radius_client_data *radius) -{ - struct hostapd_radius_servers *conf = radius->conf; - int ok = 0; - - radius->acct_serv_sock = socket(PF_INET, SOCK_DGRAM, 0); - if (radius->acct_serv_sock < 0) - perror("socket[PF_INET,SOCK_DGRAM]"); - else - ok++; - -#ifdef CONFIG_IPV6 - radius->acct_serv_sock6 = socket(PF_INET6, SOCK_DGRAM, 0); - if (radius->acct_serv_sock6 < 0) - perror("socket[PF_INET6,SOCK_DGRAM]"); - else - ok++; -#endif /* CONFIG_IPV6 */ - - if (ok == 0) - return -1; - - radius_change_server(radius, conf->acct_server, NULL, - radius->acct_serv_sock, radius->acct_serv_sock6, - 0); - - if (radius->acct_serv_sock >= 0 && - eloop_register_read_sock(radius->acct_serv_sock, - radius_client_receive, radius, - (void *) RADIUS_ACCT)) { - printf("Could not register read socket for accounting " - "server\n"); - return -1; - } - -#ifdef CONFIG_IPV6 - if (radius->acct_serv_sock6 >= 0 && - eloop_register_read_sock(radius->acct_serv_sock6, - radius_client_receive, radius, - (void *) RADIUS_ACCT)) { - printf("Could not register read socket for accounting " - "server\n"); - return -1; - } -#endif /* CONFIG_IPV6 */ - - return 0; -} - - -struct radius_client_data * -radius_client_init(void *ctx, struct hostapd_radius_servers *conf) -{ - struct radius_client_data *radius; - - radius = wpa_zalloc(sizeof(struct radius_client_data)); - if (radius == NULL) - return NULL; - - radius->ctx = ctx; - radius->conf = conf; - radius->auth_serv_sock = radius->acct_serv_sock = - radius->auth_serv_sock6 = radius->acct_serv_sock6 = - radius->auth_sock = radius->acct_sock = -1; - - if (conf->auth_server && radius_client_init_auth(radius)) { - radius_client_deinit(radius); - return NULL; - } - - if (conf->acct_server && radius_client_init_acct(radius)) { - radius_client_deinit(radius); - return NULL; - } - - if (conf->retry_primary_interval) - eloop_register_timeout(conf->retry_primary_interval, 0, - radius_retry_primary_timer, radius, - NULL); - - return radius; -} - - -void radius_client_deinit(struct radius_client_data *radius) -{ - if (!radius) - return; - - if (radius->auth_serv_sock >= 0) - eloop_unregister_read_sock(radius->auth_serv_sock); - if (radius->acct_serv_sock >= 0) - eloop_unregister_read_sock(radius->acct_serv_sock); - - eloop_cancel_timeout(radius_retry_primary_timer, radius, NULL); - - radius_client_flush(radius, 0); - os_free(radius->auth_handlers); - os_free(radius->acct_handlers); - os_free(radius); -} - - -void radius_client_flush_auth(struct radius_client_data *radius, u8 *addr) -{ - struct radius_msg_list *entry, *prev, *tmp; - - prev = NULL; - entry = radius->msgs; - while (entry) { - if (entry->msg_type == RADIUS_AUTH && - os_memcmp(entry->addr, addr, ETH_ALEN) == 0) { - hostapd_logger(radius->ctx, addr, - HOSTAPD_MODULE_RADIUS, - HOSTAPD_LEVEL_DEBUG, - "Removing pending RADIUS authentication" - " message for removed client"); - - if (prev) - prev->next = entry->next; - else - radius->msgs = entry->next; - - tmp = entry; - entry = entry->next; - radius_client_msg_free(tmp); - radius->num_msgs--; - continue; - } - - prev = entry; - entry = entry->next; - } -} - - -static int radius_client_dump_auth_server(char *buf, size_t buflen, - struct hostapd_radius_server *serv, - struct radius_client_data *cli) -{ - int pending = 0; - struct radius_msg_list *msg; - char abuf[50]; - - if (cli) { - for (msg = cli->msgs; msg; msg = msg->next) { - if (msg->msg_type == RADIUS_AUTH) - pending++; - } - } - - return os_snprintf(buf, buflen, - "radiusAuthServerIndex=%d\n" - "radiusAuthServerAddress=%s\n" - "radiusAuthClientServerPortNumber=%d\n" - "radiusAuthClientRoundTripTime=%d\n" - "radiusAuthClientAccessRequests=%u\n" - "radiusAuthClientAccessRetransmissions=%u\n" - "radiusAuthClientAccessAccepts=%u\n" - "radiusAuthClientAccessRejects=%u\n" - "radiusAuthClientAccessChallenges=%u\n" - "radiusAuthClientMalformedAccessResponses=%u\n" - "radiusAuthClientBadAuthenticators=%u\n" - "radiusAuthClientPendingRequests=%u\n" - "radiusAuthClientTimeouts=%u\n" - "radiusAuthClientUnknownTypes=%u\n" - "radiusAuthClientPacketsDropped=%u\n", - serv->index, - hostapd_ip_txt(&serv->addr, abuf, sizeof(abuf)), - serv->port, - serv->round_trip_time, - serv->requests, - serv->retransmissions, - serv->access_accepts, - serv->access_rejects, - serv->access_challenges, - serv->malformed_responses, - serv->bad_authenticators, - pending, - serv->timeouts, - serv->unknown_types, - serv->packets_dropped); -} - - -static int radius_client_dump_acct_server(char *buf, size_t buflen, - struct hostapd_radius_server *serv, - struct radius_client_data *cli) -{ - int pending = 0; - struct radius_msg_list *msg; - char abuf[50]; - - if (cli) { - for (msg = cli->msgs; msg; msg = msg->next) { - if (msg->msg_type == RADIUS_ACCT || - msg->msg_type == RADIUS_ACCT_INTERIM) - pending++; - } - } - - return os_snprintf(buf, buflen, - "radiusAccServerIndex=%d\n" - "radiusAccServerAddress=%s\n" - "radiusAccClientServerPortNumber=%d\n" - "radiusAccClientRoundTripTime=%d\n" - "radiusAccClientRequests=%u\n" - "radiusAccClientRetransmissions=%u\n" - "radiusAccClientResponses=%u\n" - "radiusAccClientMalformedResponses=%u\n" - "radiusAccClientBadAuthenticators=%u\n" - "radiusAccClientPendingRequests=%u\n" - "radiusAccClientTimeouts=%u\n" - "radiusAccClientUnknownTypes=%u\n" - "radiusAccClientPacketsDropped=%u\n", - serv->index, - hostapd_ip_txt(&serv->addr, abuf, sizeof(abuf)), - serv->port, - serv->round_trip_time, - serv->requests, - serv->retransmissions, - serv->responses, - serv->malformed_responses, - serv->bad_authenticators, - pending, - serv->timeouts, - serv->unknown_types, - serv->packets_dropped); -} - - -int radius_client_get_mib(struct radius_client_data *radius, char *buf, - size_t buflen) -{ - struct hostapd_radius_servers *conf = radius->conf; - int i; - struct hostapd_radius_server *serv; - int count = 0; - - if (conf->auth_servers) { - for (i = 0; i < conf->num_auth_servers; i++) { - serv = &conf->auth_servers[i]; - count += radius_client_dump_auth_server( - buf + count, buflen - count, serv, - serv == conf->auth_server ? - radius : NULL); - } - } - - if (conf->acct_servers) { - for (i = 0; i < conf->num_acct_servers; i++) { - serv = &conf->acct_servers[i]; - count += radius_client_dump_acct_server( - buf + count, buflen - count, serv, - serv == conf->acct_server ? - radius : NULL); - } - } - - return count; -} - - -static int radius_servers_diff(struct hostapd_radius_server *nserv, - struct hostapd_radius_server *oserv, - int num) -{ - int i; - - for (i = 0; i < num; i++) { - if (hostapd_ip_diff(&nserv[i].addr, &oserv[i].addr) || - nserv[i].port != oserv[i].port || - nserv[i].shared_secret_len != oserv[i].shared_secret_len || - memcmp(nserv[i].shared_secret, oserv[i].shared_secret, - nserv[i].shared_secret_len) != 0) - return 1; - } - - return 0; -} - - -struct radius_client_data * -radius_client_reconfig(struct radius_client_data *old, void *ctx, - struct hostapd_radius_servers *oldconf, - struct hostapd_radius_servers *newconf) -{ - radius_client_flush(old, 0); - - if (newconf->retry_primary_interval != - oldconf->retry_primary_interval || - newconf->num_auth_servers != oldconf->num_auth_servers || - newconf->num_acct_servers != oldconf->num_acct_servers || - radius_servers_diff(newconf->auth_servers, oldconf->auth_servers, - newconf->num_auth_servers) || - radius_servers_diff(newconf->acct_servers, oldconf->acct_servers, - newconf->num_acct_servers)) { - hostapd_logger(ctx, NULL, HOSTAPD_MODULE_RADIUS, - HOSTAPD_LEVEL_DEBUG, - "Reconfiguring RADIUS client"); - radius_client_deinit(old); - return radius_client_init(ctx, newconf); - } - - return old; -} |