#include <openssl/ocsp.h>
#endif
-#ifdef HAVE_PTHREAD_H
-#define PTHREAD_MUTEX_LOCK pthread_mutex_lock
-#define PTHREAD_MUTEX_UNLOCK pthread_mutex_unlock
-#else
-#define PTHREAD_MUTEX_LOCK(_x)
-#define PTHREAD_MUTEX_UNLOCK(_x)
-#endif
-
-
/* record */
static void record_init(record_t *buf);
static void record_close(record_t *buf);
}
}
-static void dump_hex(const char *msg, const uint8_t *data, size_t data_len)
-{
- size_t i;
-
- if (debug_flag < 3) return;
-
- printf("%s %d\n", msg, (int) data_len);
- if (data_len > 256) data_len = 256;
-
- for (i = 0; i < data_len; i++) {
- if ((i & 0x0f) == 0x00) printf ("%02x: ", (unsigned int) i);
- printf("%02x ", data[i]);
- if ((i & 0x0f) == 0x0f) printf ("\n");
- }
- printf("\n");
- fflush(stdout);
-}
-
-static void tls_socket_close(rad_listen_t *listener)
-{
- listen_socket_t *sock = listener->data;
-
- listener->status = RAD_LISTEN_STATUS_REMOVE_FD;
- listener->tls = NULL; /* parent owns this! */
-
- if (sock->parent) {
- /*
- * Decrement the number of connections.
- */
- if (sock->parent->num_connections > 0) {
- sock->parent->num_connections--;
- }
- if (sock->client->num_connections > 0) {
- sock->client->num_connections--;
- }
- }
-
- /*
- * Tell the event handler that an FD has disappeared.
- */
- DEBUG("Client has closed connection");
- event_new_fd(listener);
-
- /*
- * Do NOT free the listener here. It's in use by
- * a request, and will need to hang around until
- * all of the requests are done.
- *
- * It is instead free'd in remove_from_request_hash()
- */
-}
-
-static int tls_socket_write(rad_listen_t *listener, REQUEST *request)
-{
- uint8_t *p;
- ssize_t rcode;
- listen_socket_t *sock = listener->data;
-
- p = sock->ssn->dirty_out.data;
-
- while (p < (sock->ssn->dirty_out.data + sock->ssn->dirty_out.used)) {
- RDEBUG3("Writing to socket %d", request->packet->sockfd);
- rcode = write(request->packet->sockfd, p,
- (sock->ssn->dirty_out.data + sock->ssn->dirty_out.used) - p);
- if (rcode <= 0) {
- RDEBUG("Error writing to TLS socket: %s", strerror(errno));
-
- tls_socket_close(listener);
- return 0;
- }
- p += rcode;
- }
-
- sock->ssn->dirty_out.used = 0;
-
- return 1;
-}
-
-
-static int tls_socket_recv(rad_listen_t *listener)
-{
- int doing_init = FALSE;
- ssize_t rcode;
- RADIUS_PACKET *packet;
- REQUEST *request;
- listen_socket_t *sock = listener->data;
- fr_tls_status_t status;
- RADCLIENT *client = sock->client;
-
- if (!sock->packet) {
- sock->packet = rad_alloc(0);
- if (!sock->packet) return 0;
-
- sock->packet->sockfd = listener->fd;
- sock->packet->src_ipaddr = sock->other_ipaddr;
- sock->packet->src_port = sock->other_port;
- sock->packet->dst_ipaddr = sock->my_ipaddr;
- sock->packet->dst_port = sock->my_port;
-
- if (sock->request) sock->request->packet = sock->packet;
- }
-
- /*
- * Allocate a REQUEST for debugging.
- */
- if (!sock->request) {
- sock->request = request = request_alloc();
- if (!sock->request) {
- radlog(L_ERR, "Out of memory");
- return 0;
- }
-
- rad_assert(request->packet == NULL);
- rad_assert(sock->packet != NULL);
- request->packet = sock->packet;
-
- request->component = "<core>";
- request->component = "<tls-connect>";
-
- /*
- * Not sure if we should do this on every packet...
- */
- request->reply = rad_alloc(0);
- if (!request->reply) return 0;
-
- request->options = RAD_REQUEST_OPTION_DEBUG2;
-
- rad_assert(sock->ssn == NULL);
-
- sock->ssn = tls_new_session(listener->tls, sock->request,
- listener->tls->require_client_cert);
- if (!sock->ssn) {
- request_free(&sock->request);
- sock->packet = NULL;
- return 0;
- }
-
- SSL_set_ex_data(sock->ssn->ssl, FR_TLS_EX_INDEX_REQUEST, (void *)request);
- SSL_set_ex_data(sock->ssn->ssl, FR_TLS_EX_INDEX_CERTS, (void *)&request->packet->vps);
-
- doing_init = TRUE;
- }
-
- rad_assert(sock->request != NULL);
- rad_assert(sock->request->packet != NULL);
- rad_assert(sock->packet != NULL);
- rad_assert(sock->ssn != NULL);
-
- request = sock->request;
-
- RDEBUG3("Reading from socket %d", request->packet->sockfd);
- PTHREAD_MUTEX_LOCK(&sock->mutex);
- rcode = read(request->packet->sockfd,
- sock->ssn->dirty_in.data,
- sizeof(sock->ssn->dirty_in.data));
- if ((rcode < 0) && (errno == ECONNRESET)) {
- do_close:
- PTHREAD_MUTEX_UNLOCK(&sock->mutex);
- tls_socket_close(listener);
- return 0;
- }
-
- if (rcode < 0) {
- RDEBUG("Error reading TLS socket: %s", strerror(errno));
- goto do_close;
- }
-
- /*
- * Normal socket close.
- */
- if (rcode == 0) goto do_close;
-
- sock->ssn->dirty_in.used = rcode;
- memset(sock->ssn->dirty_in.data + sock->ssn->dirty_in.used,
- 0, 16);
-
- dump_hex("READ FROM SSL", sock->ssn->dirty_in.data, sock->ssn->dirty_in.used);
-
- /*
- * Catch attempts to use non-SSL.
- */
- if (doing_init && (sock->ssn->dirty_in.data[0] != handshake)) {
- RDEBUG("Non-TLS data sent to TLS socket: closing");
- goto do_close;
- }
-
- /*
- * Skip ahead to reading application data.
- */
- if (SSL_is_init_finished(sock->ssn->ssl)) goto app;
-
- if (!tls_handshake_recv(request, sock->ssn)) {
- RDEBUG("FAILED in TLS handshake receive");
- goto do_close;
- }
-
- if (sock->ssn->dirty_out.used > 0) {
- tls_socket_write(listener, request);
- PTHREAD_MUTEX_UNLOCK(&sock->mutex);
- return 0;
- }
-
-app:
- /*
- * FIXME: Run the packet through a virtual server in
- * order to see if we like the certificate presented by
- * the client.
- */
-
- status = tls_application_data(sock->ssn, request);
- RDEBUG("Application data status %d", status);
-
- if (status == FR_TLS_MORE_FRAGMENTS) {
- PTHREAD_MUTEX_UNLOCK(&sock->mutex);
- return 0;
- }
-
- if (sock->ssn->clean_out.used == 0) {
- PTHREAD_MUTEX_UNLOCK(&sock->mutex);
- return 0;
- }
-
- dump_hex("TUNNELED DATA", sock->ssn->clean_out.data, sock->ssn->clean_out.used);
-
- /*
- * If the packet is a complete RADIUS packet, return it to
- * the caller. Otherwise...
- */
- if ((sock->ssn->clean_out.used < 20) ||
- (((sock->ssn->clean_out.data[2] << 8) | sock->ssn->clean_out.data[3]) != (int) sock->ssn->clean_out.used)) {
- RDEBUG("Received bad packet: Length %d contents %d",
- sock->ssn->clean_out.used,
- (sock->ssn->clean_out.data[2] << 8) | sock->ssn->clean_out.data[3]);
- goto do_close;
- }
-
- packet = sock->packet;
- packet->data = rad_malloc(sock->ssn->clean_out.used);
- packet->data_len = sock->ssn->clean_out.used;
- record_minus(&sock->ssn->clean_out, packet->data, packet->data_len);
- packet->vps = NULL;
- PTHREAD_MUTEX_UNLOCK(&sock->mutex);
-
- if (!rad_packet_ok(packet, 0)) {
- RDEBUG("Received bad packet: %s", fr_strerror());
- tls_socket_close(listener);
- return 0; /* do_close unlocks the mutex */
- }
-
- /*
- * Copied from src/lib/radius.c, rad_recv();
- */
- if (fr_debug_flag) {
- char host_ipaddr[128];
-
- if ((packet->code > 0) && (packet->code < FR_MAX_PACKET_CODE)) {
- RDEBUG("tls_recv: %s packet from host %s port %d, id=%d, length=%d",
- fr_packet_codes[packet->code],
- inet_ntop(packet->src_ipaddr.af,
- &packet->src_ipaddr.ipaddr,
- host_ipaddr, sizeof(host_ipaddr)),
- packet->src_port,
- packet->id, (int) packet->data_len);
- } else {
- RDEBUG("tls_recv: Packet from host %s port %d code=%d, id=%d, length=%d",
- inet_ntop(packet->src_ipaddr.af,
- &packet->src_ipaddr.ipaddr,
- host_ipaddr, sizeof(host_ipaddr)),
- packet->src_port,
- packet->code,
- packet->id, (int) packet->data_len);
- }
- }
-
- FR_STATS_INC(auth, total_requests);
-
- return 1;
-}
-
-
-int dual_tls_recv(rad_listen_t *listener)
-{
- RADIUS_PACKET *packet;
- REQUEST *request;
- RAD_REQUEST_FUNP fun = NULL;
- listen_socket_t *sock = listener->data;
- RADCLIENT *client = sock->client;
-
- if (!tls_socket_recv(listener)) {
- return 0;
- }
-
- rad_assert(sock->request != NULL);
- rad_assert(sock->request->packet != NULL);
- rad_assert(sock->packet != NULL);
- rad_assert(sock->ssn != NULL);
-
- request = sock->request;
- packet = sock->packet;
-
- /*
- * Some sanity checks, based on the packet code.
- */
- switch(packet->code) {
- case PW_AUTHENTICATION_REQUEST:
- if (listener->type != RAD_LISTEN_AUTH) goto bad_packet;
- FR_STATS_INC(auth, total_requests);
- fun = rad_authenticate;
- break;
-
- case PW_ACCOUNTING_REQUEST:
- if (listener->type != RAD_LISTEN_ACCT) goto bad_packet;
- FR_STATS_INC(acct, total_requests);
- fun = rad_accounting;
- break;
-
- case PW_STATUS_SERVER:
- if (!mainconfig.status_server) {
- FR_STATS_INC(auth, total_unknown_types);
- DEBUG("WARNING: Ignoring Status-Server request due to security configuration");
- rad_free(&sock->packet);
- request->packet = NULL;
- return 0;
- }
- fun = rad_status_server;
- break;
-
- default:
- bad_packet:
- FR_STATS_INC(auth, total_unknown_types);
-
- DEBUG("Invalid packet code %d sent from client %s port %d : IGNORED",
- packet->code, client->shortname, packet->src_port);
- rad_free(&sock->packet);
- request->packet = NULL;
- return 0;
- } /* switch over packet types */
-
- if (!request_receive(listener, packet, client, fun)) {
- FR_STATS_INC(auth, total_packets_dropped);
- rad_free(&sock->packet);
- request->packet = NULL;
- return 0;
- }
-
- sock->packet = NULL; /* we have no need for more partial reads */
- request->packet = NULL;
-
- return 1;
-}
-
-
-/*
- * Send a response packet
- */
-int dual_tls_send(rad_listen_t *listener, REQUEST *request)
-{
- listen_socket_t *sock = listener->data;
-
- rad_assert(request->listener == listener);
- rad_assert(listener->send == dual_tls_send);
-
- /*
- * Accounting reject's are silently dropped.
- *
- * We do it here to avoid polluting the rest of the
- * code with this knowledge
- */
- if (request->reply->code == 0) return 0;
-
- /*
- * Pack the VPs
- */
- if (rad_encode(request->reply, request->packet,
- request->client->secret) < 0) {
- RDEBUG("Failed encoding packet: %s", fr_strerror());
- return 0;
- }
-
- /*
- * Sign the packet.
- */
- if (rad_sign(request->reply, request->packet,
- request->client->secret) < 0) {
- RDEBUG("Failed signing packet: %s", fr_strerror());
- return 0;
- }
-
- PTHREAD_MUTEX_LOCK(&sock->mutex);
- /*
- * Write the packet to the SSL buffers.
- */
- record_plus(&sock->ssn->clean_in,
- request->reply->data, request->reply->data_len);
-
- /*
- * Do SSL magic to get encrypted data.
- */
- tls_handshake_send(request, sock->ssn);
-
- /*
- * And finally write the data to the socket.
- */
- if (sock->ssn->dirty_out.used > 0) {
- dump_hex("WRITE TO SSL", sock->ssn->dirty_out.data, sock->ssn->dirty_out.used);
-
- tls_socket_write(listener, request);
- }
- PTHREAD_MUTEX_UNLOCK(&sock->mutex);
-
- return 0;
-}
-
-
-int proxy_tls_recv(rad_listen_t *listener)
-{
- int rcode;
- size_t length;
- listen_socket_t *sock = listener->data;
- char buffer[256];
- uint8_t data[1024];
- RADIUS_PACKET *packet;
- RAD_REQUEST_FUNP fun = NULL;
-
- DEBUG3("Proxy SSL socket has data to read");
- PTHREAD_MUTEX_LOCK(&sock->mutex);
-redo:
- rcode = SSL_read(sock->ssn->ssl, data, 4);
- if (rcode <= 0) {
- int err = SSL_get_error(sock->ssn->ssl, rcode);
- switch (err) {
- case SSL_ERROR_WANT_READ:
- case SSL_ERROR_WANT_WRITE:
- rcode = 0;
- goto redo;
- case SSL_ERROR_ZERO_RETURN:
- /* remote end sent close_notify, send one back */
- SSL_shutdown(sock->ssn->ssl);
-
- case SSL_ERROR_SYSCALL:
- do_close:
- PTHREAD_MUTEX_UNLOCK(&sock->mutex);
- tls_socket_close(listener);
- return 0;
-
- default:
- while ((err = ERR_get_error())) {
- DEBUG("proxy recv says %s",
- ERR_error_string(err, NULL));
- }
-
- goto do_close;
- }
- }
-
- length = (data[2] << 8) | data[3];
- DEBUG3("Proxy received header saying we have a packet of %u bytes",
- (unsigned int) length);
-
- if (length > sizeof(data)) {
- DEBUG("Received packet will be too large! (%u)",
- (data[2] << 8) | data[3]);
- goto do_close;
- }
-
- rcode = SSL_read(sock->ssn->ssl, data + 4, length);
- if (rcode <= 0) {
- switch (SSL_get_error(sock->ssn->ssl, rcode)) {
- case SSL_ERROR_WANT_READ:
- case SSL_ERROR_WANT_WRITE:
- rcode = 0;
- break;
-
- case SSL_ERROR_ZERO_RETURN:
- /* remote end sent close_notify, send one back */
- SSL_shutdown(sock->ssn->ssl);
- goto do_close;
- default:
- goto do_close;
- }
- }
- PTHREAD_MUTEX_UNLOCK(&sock->mutex);
-
- packet = rad_alloc(0);
- packet->sockfd = listener->fd;
- packet->src_ipaddr = sock->other_ipaddr;
- packet->src_port = sock->other_port;
- packet->dst_ipaddr = sock->my_ipaddr;
- packet->dst_port = sock->my_port;
- packet->code = data[0];
- packet->id = data[1];
- packet->data_len = length;
- packet->data = rad_malloc(packet->data_len);
- memcpy(packet->data, data, packet->data_len);
- memcpy(packet->vector, packet->data + 4, 16);
-
- /*
- * FIXME: Client MIB updates?
- */
- switch(packet->code) {
- case PW_AUTHENTICATION_ACK:
- case PW_ACCESS_CHALLENGE:
- case PW_AUTHENTICATION_REJECT:
- fun = rad_authenticate;
- break;
-
-#ifdef WITH_ACCOUNTING
- case PW_ACCOUNTING_RESPONSE:
- fun = rad_accounting;
- break;
-#endif
-
- default:
- /*
- * FIXME: Update MIB for packet types?
- */
- radlog(L_ERR, "Invalid packet code %d sent to a proxy port "
- "from home server %s port %d - ID %d : IGNORED",
- packet->code,
- ip_ntoh(&packet->src_ipaddr, buffer, sizeof(buffer)),
- packet->src_port, packet->id);
- rad_free(&packet);
- return 0;
- }
-
- if (!request_proxy_reply(packet)) {
- rad_free(&packet);
- return 0;
- }
-
- return 1;
-}
-
-int proxy_tls_send(rad_listen_t *listener, REQUEST *request)
-{
- int rcode;
- listen_socket_t *sock = listener->data;
-
- /*
- * Normal proxying calls us with the data already
- * encoded. The "ping home server" code does not. So,
- * if there's no packet, encode it here.
- */
- if (!request->proxy->data) {
- request->proxy_listener->encode(request->proxy_listener,
- request);
- }
-
- DEBUG3("Proxy is writing %u bytes to SSL",
- (unsigned int) request->proxy->data_len);
- PTHREAD_MUTEX_LOCK(&sock->mutex);
- while ((rcode = SSL_write(sock->ssn->ssl, request->proxy->data,
- request->proxy->data_len)) < 0) {
- int err;
- while ((err = ERR_get_error())) {
- DEBUG("proxy SSL_write says %s",
- ERR_error_string(err, NULL));
- }
- PTHREAD_MUTEX_UNLOCK(&sock->mutex);
- tls_socket_close(listener);
- return 0;
- }
- PTHREAD_MUTEX_UNLOCK(&sock->mutex);
-
- return 1;
-}
-
#endif /* WITH_TLS */
projects / freeradius.git / blobdiff