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;
}
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;
sock->ssn->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;
}
static int tls_socket_recv(rad_listen_t *listener)
{
bool 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 = fr_radius_alloc(sock, false);
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 = talloc_steal(sock->request, sock->packet);
}
/*
* Allocate a REQUEST for debugging, and initialize the TLS session.
*/
if (!sock->request) {
sock->request = request = request_alloc(sock);
if (!sock->request) {
ERROR("Out of memory");
return 0;
}
rad_assert(request->packet == NULL);
rad_assert(sock->packet != NULL);
request->packet = talloc_steal(request, sock->packet);
request->component = "<tls-connect>";
request->reply = fr_radius_alloc(request, false);
if (!request->reply) return 0;
rad_assert(sock->tls_session == NULL);
sock->tls_session = tls_session_init_server(sock, listener->tls, sock->request,
listener->tls->require_client_cert);
if (!sock->tls_session) {
TALLOC_FREE(sock->request);
sock->packet = NULL;
return 0;
}
SSL_set_ex_data(sock->tls_session->ssl, FR_TLS_EX_INDEX_REQUEST, (void *)request);
doing_init = true;
}
rad_assert(sock->request != NULL);
rad_assert(sock->request->packet != NULL);
rad_assert(sock->packet != NULL);
rad_assert(sock->tls_session != NULL);
request = sock->request;
RDEBUG3("Reading from socket %d", request->packet->sockfd);
PTHREAD_MUTEX_LOCK(&sock->mutex);
rcode = read(request->packet->sockfd,
sock->tls_session->dirty_in.data,
sizeof(sock->tls_session->dirty_in.data));
if ((rcode < 0) && (errno == ECONNRESET)) {
do_close:
PTHREAD_MUTEX_UNLOCK(&sock->mutex);
DEBUG("Closing TLS socket from client port %u", sock->other_port);
tls_socket_close(listener);
PTHREAD_MUTEX_UNLOCK(&sock->mutex);
return 0;
}
if (rcode < 0) {
RDEBUG("Error reading TLS socket: %s", fr_syserror(errno));
goto do_close;
}
/*
* Normal socket close.
*/
if (rcode == 0) goto do_close;
sock->tls_session->dirty_in.used = rcode;
dump_hex("READ FROM SSL", sock->tls_session->dirty_in.data, sock->tls_session->dirty_in.used);
/*
* Catch attempts to use non-SSL.
*/
if (doing_init && (sock->tls_session->dirty_in.data[0] != handshake)) {
RDEBUG("Non-TLS data sent to TLS socket: closing");
goto do_close;
}
/*
* If we need to do more initialization, do that here.
*/
if (!SSL_is_init_finished(sock->tls_session->ssl)) {
if (!tls_handshake_recv(request, sock->tls_session)) {
RDEBUG("FAILED in TLS handshake receive");
goto do_close;
}
/*
* More ACK data to send. Do so.
*/
if (sock->tls_session->dirty_out.used > 0) {
tls_socket_write(listener, request);
PTHREAD_MUTEX_UNLOCK(&sock->mutex);
return 0;
}
/*
* FIXME: Run the request through a virtual
* server in order to see if we like the
* certificate presented by the client.
*/
}
/*
* Try to get application data.
*/
status = tls_application_data(sock->tls_session, request);
RDEBUG("Application data status %d", status);
if (status == FR_TLS_RECORD_FRAGMENT_MORE) {
PTHREAD_MUTEX_UNLOCK(&sock->mutex);
return 0;
}
if (sock->tls_session->clean_out.used == 0) {
PTHREAD_MUTEX_UNLOCK(&sock->mutex);
return 0;
}
/*
* We now have a bunch of application data.
*/
dump_hex("TUNNELED DATA > ", sock->tls_session->clean_out.data, sock->tls_session->clean_out.used);
/*
* If the packet is a complete RADIUS packet, return it to
* the caller. Otherwise...
*/
if ((sock->tls_session->clean_out.used < 20) ||
(((sock->tls_session->clean_out.data[2] << 8) | sock->tls_session->clean_out.data[3]) != (int) sock->tls_session->clean_out.used)) {
RDEBUG("Received bad packet: Length %zd contents %d",
sock->tls_session->clean_out.used,
(sock->tls_session->clean_out.data[2] << 8) | sock->tls_session->clean_out.data[3]);
goto do_close;
}
packet = sock->packet;
packet->data = talloc_array(packet, uint8_t, sock->tls_session->clean_out.used);
packet->data_len = sock->tls_session->clean_out.used;
sock->tls_session->record_to_buff(&sock->tls_session->clean_out, packet->data, packet->data_len);
packet->vps = NULL;
PTHREAD_MUTEX_UNLOCK(&sock->mutex);
if (!fr_radius_ok(packet, 0, NULL)) {
if (DEBUG_ENABLED) ERROR("Receive - %s", fr_strerror());
DEBUG("Closing TLS socket from client");
PTHREAD_MUTEX_LOCK(&sock->mutex);
tls_socket_close(listener);
PTHREAD_MUTEX_UNLOCK(&sock->mutex);
return 0; /* do_close unlocks the mutex */
}
/*
* Copied from src/lib/radius.c, fr_radius_recv();
*/
if (fr_debug_lvl) {
char host_ipaddr[INET6_ADDRSTRLEN];
if (is_radius_code(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;
RAD_REQUEST_FUNP fun = NULL;
listen_socket_t *sock = listener->data;
RADCLIENT *client = sock->client;
if (listener->status != RAD_LISTEN_STATUS_KNOWN) return 0;
if (!tls_socket_recv(listener)) {
return 0;
}
rad_assert(sock->packet != NULL);
rad_assert(sock->tls_session != NULL);
rad_assert(client != NULL);
packet = talloc_steal(NULL, sock->packet);
sock->packet = NULL;
gettimeofday(&packet->timestamp, NULL);
/*
* Some sanity checks, based on the packet code.
*
* "auth+acct" are marked as "auth", with the "dual" flag
* set.
*/
switch (packet->code) {
case PW_CODE_ACCESS_REQUEST:
if (listener->type != RAD_LISTEN_AUTH) goto bad_packet;
FR_STATS_INC(auth, total_requests);
fun = rad_authenticate;
break;
#ifdef WITH_ACCOUNTING
case PW_CODE_ACCOUNTING_REQUEST:
if (listener->type != RAD_LISTEN_ACCT) {
/*
* Allow auth + dual. Disallow
* everything else.
*/
if (!((listener->type == RAD_LISTEN_AUTH) &&
(listener->dual))) {
goto bad_packet;
}
}
FR_STATS_INC(acct, total_requests);
fun = rad_accounting;
break;
#endif
case PW_CODE_STATUS_SERVER:
if (!main_config.status_server) {
FR_STATS_INC(auth, total_unknown_types);
WARN("Ignoring Status-Server request due to security configuration");
fr_radius_free(&packet);
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);
fr_radius_free(&packet);
return 0;
} /* switch over packet types */
if (!request_receive(NULL, listener, packet, client, fun)) {
FR_STATS_INC(auth, total_packets_dropped);
fr_radius_free(&packet);
return 0;
}
return 1;
}
int dual_tls_recv(rad_listen_t *listener)
{
RADIUS_PACKET *packet;
RAD_REQUEST_FUNP fun = NULL;
listen_socket_t *sock = listener->data;
RADCLIENT *client = sock->client;
BIO *rbio;
if (listener->status != RAD_LISTEN_STATUS_KNOWN) return 0;
redo:
if (!tls_socket_recv(listener)) {
return 0;
}
rad_assert(sock->packet != NULL);
rad_assert(sock->ssn != NULL);
rad_assert(client != NULL);
packet = talloc_steal(NULL, sock->packet);
sock->packet = NULL;
/*
* Some sanity checks, based on the packet code.
*
* "auth+acct" are marked as "auth", with the "dual" flag
* set.
*/
switch (packet->code) {
case PW_CODE_ACCESS_REQUEST:
if (listener->type != RAD_LISTEN_AUTH) goto bad_packet;
FR_STATS_INC(auth, total_requests);
fun = rad_authenticate;
break;
#ifdef WITH_ACCOUNTING
case PW_CODE_ACCOUNTING_REQUEST:
if (listener->type != RAD_LISTEN_ACCT) {
/*
* Allow auth + dual. Disallow
* everything else.
*/
if (!((listener->type == RAD_LISTEN_AUTH) &&
(listener->dual))) {
goto bad_packet;
}
}
FR_STATS_INC(acct, total_requests);
fun = rad_accounting;
break;
#endif
case PW_CODE_STATUS_SERVER:
if (!main_config.status_server) {
FR_STATS_INC(auth, total_unknown_types);
WARN("Ignoring Status-Server request due to security configuration");
rad_free(&packet);
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(&packet);
return 0;
} /* switch over packet types */
if (!request_receive(NULL, listener, packet, client, fun)) {
FR_STATS_INC(auth, total_packets_dropped);
rad_free(&packet);
return 0;
}
/*
* Check for more application data.
*
* If there is pending SSL data, "peek" at the
* application data. If we get at least one byte of
* application data, go back to tls_socket_recv().
* SSL_peek() will set SSL_pending(), and
* tls_socket_recv() will read another packet.
*/
rbio = SSL_get_rbio(sock->ssn->ssl);
if (BIO_ctrl_pending(rbio)) {
char buf[1];
int peek = SSL_peek(sock->ssn->ssl, buf, 1);
if (peek > 0) {
DEBUG("more TLS records after dual_tls_recv");
goto redo;
}
}
return 1;
}
