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;
}
static ssize_t mod_read(fr_listen_t *li, void **packet_ctx, fr_time_t **recv_time, uint8_t *buffer, size_t buffer_len, size_t *leftover, UNUSED uint32_t *priority, UNUSED bool *is_dup)
{
proto_radius_udp_t const *inst = talloc_get_type_abort_const(li->app_io_instance, proto_radius_udp_t);
proto_radius_udp_thread_t *thread = talloc_get_type_abort(li->thread_instance, proto_radius_udp_thread_t);
fr_io_address_t *address, **address_p;
int flags;
ssize_t data_size;
size_t packet_len;
struct timeval timestamp;
decode_fail_t reason;
fr_time_t *recv_time_p;
*leftover = 0; /* always for UDP */
/*
* Where the addresses should go. This is a special case
* for proto_radius.
*/
address_p = (fr_io_address_t **) packet_ctx;
address = *address_p;
recv_time_p = *recv_time;
/*
* Tell udp_recv if we're connected or not.
*/
flags = UDP_FLAGS_CONNECTED * (thread->connection != NULL);
data_size = udp_recv(thread->sockfd, buffer, buffer_len, flags,
&address->src_ipaddr, &address->src_port,
&address->dst_ipaddr, &address->dst_port,
&address->if_index, ×tamp);
if (data_size < 0) {
DEBUG2("proto_radius_udp got read error: %s", fr_strerror());
return data_size;
}
if (!data_size) {
DEBUG2("proto_radius_udp got no data: ignoring");
return 0;
}
packet_len = data_size;
if (data_size < 20) {
DEBUG2("proto_radius_udp got 'too short' packet size %zd", data_size);
thread->stats.total_malformed_requests++;
return 0;
}
if (packet_len > inst->max_packet_size) {
DEBUG2("proto_radius_udp got 'too long' packet size %zd > %u", data_size, inst->max_packet_size);
thread->stats.total_malformed_requests++;
return 0;
}
if ((buffer[0] == 0) || (buffer[0] > FR_MAX_PACKET_CODE)) {
DEBUG("proto_radius_udp got invalid packet code %d", buffer[0]);
thread->stats.total_unknown_types++;
return 0;
}
/*
* If it's not a RADIUS packet, ignore it.
*/
if (!fr_radius_ok(buffer, &packet_len, inst->max_attributes, false, &reason)) {
/*
* @todo - check for F5 load balancer packets. <sigh>
*/
DEBUG2("proto_radius_udp got a packet which isn't RADIUS");
thread->stats.total_malformed_requests++;
return 0;
}
// @todo - maybe convert timestamp?
*recv_time_p = fr_time();
/*
* proto_radius sets the priority
*/
/*
* Print out what we received.
*/
DEBUG2("proto_radius_udp - Received %s ID %d length %d %s",
fr_packet_codes[buffer[0]], buffer[1],
(int) packet_len, thread->name);
return packet_len;
}
