#include <sys/stat.h>
#endif
+#ifdef WITH_TCP
#ifdef WITH_TLS
#ifdef HAVE_OPENSSL_RAND_H
#include <openssl/rand.h>
{
size_t i;
- if (debug_flag < 3) return;
+ if (rad_debug_lvl < 3) return;
printf("%s %d\n", msg, (int) data_len);
if (data_len > 256) data_len = 256;
{
listen_socket_t *sock = listener->data;
- listener->status = RAD_LISTEN_STATUS_REMOVE_NOW;
- listener->tls = NULL; /* parent owns this! */
+ SSL_shutdown(sock->ssn->ssl);
- if (sock->parent) {
- /*
- * Decrement the number of connections.
- */
- if (sock->parent->limit.num_connections > 0) {
- sock->parent->limit.num_connections--;
- }
- if (sock->client->limit.num_connections > 0) {
- sock->client->limit.num_connections--;
- }
- }
+ listener->status = RAD_LISTEN_STATUS_EOL;
+ listener->tls = NULL; /* parent owns this! */
/*
* Tell the event handler that an FD has disappeared.
*/
DEBUG("Client has closed connection");
- event_new_fd(listener);
+ radius_update_listener(listener);
/*
* Do NOT free the listener here. It's in use by
*/
}
-static int tls_socket_write(rad_listen_t *listener, REQUEST *request)
+static int CC_HINT(nonnull) tls_socket_write(rad_listen_t *listener, REQUEST *request)
{
uint8_t *p;
ssize_t rcode;
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));
+ RDEBUG("Error writing to TLS socket: %s", fr_syserror(errno));
tls_socket_close(listener);
return 0;
static int tls_socket_recv(rad_listen_t *listener)
{
- int doing_init = false;
+ bool doing_init = false;
ssize_t rcode;
RADIUS_PACKET *packet;
REQUEST *request;
RADCLIENT *client = sock->client;
if (!sock->packet) {
- sock->packet = rad_alloc(sock, 0);
+ sock->packet = rad_alloc(sock, false);
if (!sock->packet) return 0;
sock->packet->sockfd = listener->fd;
sock->packet->dst_ipaddr = sock->my_ipaddr;
sock->packet->dst_port = sock->my_port;
- if (sock->request) {
- (void) talloc_steal(sock->request, sock->packet);
- sock->request->packet = sock->packet;
- }
+ if (sock->request) sock->request->packet = talloc_steal(sock->request, sock->packet);
}
/*
- * Allocate a REQUEST for debugging.
+ * Allocate a REQUEST for debugging, and initialize the TLS session.
*/
if (!sock->request) {
- sock->request = request = request_alloc(NULL);
+ 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 = sock->packet;
+ request->packet = talloc_steal(request, sock->packet);
- request->component = "<core>";
request->component = "<tls-connect>";
- /*
- * Not sure if we should do this on every packet...
- */
- request->reply = rad_alloc(request, 0);
+ request->reply = rad_alloc(request, false);
if (!request->reply) return 0;
rad_assert(sock->ssn == NULL);
- sock->ssn = tls_new_session(listener->tls, sock->request,
+ sock->ssn = tls_new_session(sock, listener->tls, sock->request,
listener->tls->require_client_cert);
if (!sock->ssn) {
- request_free(&sock->request);
+ TALLOC_FREE(sock->request);
sock->packet = NULL;
return 0;
}
- (void) talloc_steal(sock, sock->ssn);
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);
+ SSL_set_ex_data(sock->ssn->ssl, fr_tls_ex_index_certs, (void *) &sock->certs);
+ SSL_set_ex_data(sock->ssn->ssl, FR_TLS_EX_INDEX_TALLOC, NULL);
doing_init = true;
}
sizeof(sock->ssn->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", strerror(errno));
+ RDEBUG("Error reading TLS socket: %s", fr_syserror(errno));
goto do_close;
}
}
/*
- * Skip ahead to reading application data.
+ * If we need to do more initialization, do that here.
*/
- if (SSL_is_init_finished(sock->ssn->ssl)) goto app;
+ if (!SSL_is_init_finished(sock->ssn->ssl)) {
+ if (!tls_handshake_recv(request, sock->ssn)) {
+ RDEBUG("FAILED in TLS handshake receive");
+ goto do_close;
+ }
- if (!tls_handshake_recv(request, sock->ssn)) {
- RDEBUG("FAILED in TLS handshake receive");
- goto do_close;
- }
+ /*
+ * More ACK data to send. Do so.
+ */
+ if (sock->ssn->dirty_out.used > 0) {
+ tls_socket_write(listener, request);
+ PTHREAD_MUTEX_UNLOCK(&sock->mutex);
+ return 0;
+ }
- if (sock->ssn->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.
+ */
}
-app:
/*
- * FIXME: Run the packet 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->ssn, request);
RDEBUG("Application data status %d", status);
return 0;
}
- dump_hex("TUNNELED DATA", sock->ssn->clean_out.data, sock->ssn->clean_out.used);
+ /*
+ * We now have a bunch of application data.
+ */
+ 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
*/
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",
+ RDEBUG("Received bad packet: Length %zd contents %d",
sock->ssn->clean_out.used,
(sock->ssn->clean_out.data[2] << 8) | sock->ssn->clean_out.data[3]);
goto do_close;
packet->vps = NULL;
PTHREAD_MUTEX_UNLOCK(&sock->mutex);
- if (!rad_packet_ok(packet, 0)) {
- RDEBUG("Received bad packet: %s", fr_strerror());
+ if (!rad_packet_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, rad_recv();
*/
- if (fr_debug_flag) {
+ if (fr_debug_lvl) {
char host_ipaddr[128];
- if ((packet->code > 0) && (packet->code < FR_MAX_PACKET_CODE)) {
+ 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,
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 (listener->status != RAD_LISTEN_STATUS_KNOWN) return 0;
+
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);
rad_assert(client != NULL);
- request = sock->request;
- packet = sock->packet;
+ 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_AUTHENTICATION_REQUEST:
+ 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;
- case PW_ACCOUNTING_REQUEST:
+#ifdef WITH_ACCOUNTING
+ case PW_CODE_ACCOUNTING_REQUEST:
if (listener->type != RAD_LISTEN_ACCT) {
/*
* Allow auth + dual. Disallow
FR_STATS_INC(acct, total_requests);
fun = rad_accounting;
break;
+#endif
- case PW_STATUS_SERVER:
- if (!mainconfig.status_server) {
+ case PW_CODE_STATUS_SERVER:
+ if (!main_config.status_server) {
FR_STATS_INC(auth, total_unknown_types);
- WDEBUG("Ignoring Status-Server request due to security configuration");
- rad_free(&sock->packet);
- request->packet = NULL;
+ WARN("Ignoring Status-Server request due to security configuration");
+ rad_free(&packet);
return 0;
}
fun = rad_status_server;
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;
+ rad_free(&packet);
return 0;
} /* switch over packet types */
- if (!request_receive(listener, packet, client, fun)) {
+ if (!request_receive(NULL, listener, packet, client, fun)) {
FR_STATS_INC(auth, total_packets_dropped);
- rad_free(&sock->packet);
- request->packet = NULL;
+ rad_free(&packet);
return 0;
}
- sock->packet = NULL; /* we have no need for more partial reads */
- request->packet = NULL;
-
return 1;
}
{
listen_socket_t *sock = listener->data;
+ VERIFY_REQUEST(request);
+
rad_assert(request->listener == listener);
rad_assert(listener->send == dual_tls_send);
+ if (listener->status != RAD_LISTEN_STATUS_KNOWN) return 0;
+
/*
* Accounting reject's are silently dropped.
*
*/
if (rad_encode(request->reply, request->packet,
request->client->secret) < 0) {
- RDEBUG("Failed encoding packet: %s", fr_strerror());
+ RERROR("Failed encoding packet: %s", fr_strerror());
return 0;
}
+ if (request->reply->data_len > (MAX_PACKET_LEN - 100)) {
+ RWARN("Packet is large, and possibly truncated - %zd vs max %d",
+ request->reply->data_len, MAX_PACKET_LEN);
+ }
+
/*
* Sign the packet.
*/
if (rad_sign(request->reply, request->packet,
request->client->secret) < 0) {
- RDEBUG("Failed signing packet: %s", fr_strerror());
+ RERROR("Failed signing packet: %s", fr_strerror());
return 0;
}
PTHREAD_MUTEX_LOCK(&sock->mutex);
+
/*
* Write the packet to the SSL buffers.
*/
sock->ssn->record_plus(&sock->ssn->clean_in,
request->reply->data, request->reply->data_len);
+ dump_hex("TUNNELED DATA < ", sock->ssn->clean_in.data, sock->ssn->clean_in.used);
+
/*
* Do SSL magic to get encrypted data.
*/
return 0;
}
+static int try_connect(tls_session_t *ssn)
+{
+ int ret;
+ ret = SSL_connect(ssn->ssl);
+ if (ret < 0) {
+ switch (SSL_get_error(ssn->ssl, ret)) {
+ default:
+ break;
-int proxy_tls_recv(rad_listen_t *listener)
+
+
+ case SSL_ERROR_WANT_READ:
+ case SSL_ERROR_WANT_WRITE:
+ ssn->connected = false;
+ return 0;
+ }
+ }
+
+ if (ret <= 0) {
+ tls_error_io_log(NULL, ssn, ret, "Failed in " STRINGIFY(__FUNCTION__) " (SSL_connect)");
+ talloc_free(ssn);
+
+ return -1;
+ }
+
+ return 1;
+}
+
+
+#ifdef WITH_PROXY
+/*
+ * Read from the SSL socket. Safe with either blocking or
+ * non-blocking IO. This level of complexity is probably not
+ * necessary, as each packet gets put into one SSL application
+ * record. When SSL has a full record, we should be able to read
+ * the entire packet via one SSL_read().
+ *
+ * When SSL has a partial record, SSL_read() will return
+ * WANT_READ or WANT_WRITE, and zero application data.
+ *
+ * Called with the mutex held.
+ */
+static ssize_t proxy_tls_read(rad_listen_t *listener)
{
int rcode;
size_t length;
- listen_socket_t *sock = listener->data;
- char buffer[256];
- RADIUS_PACKET *packet;
uint8_t *data;
+ listen_socket_t *sock = listener->data;
+
+ if (!sock->ssn->connected) {
+ rcode = try_connect(sock->ssn);
+ if (rcode == 0) return 0;
+
+ if (rcode < 0) {
+ SSL_shutdown(sock->ssn->ssl);
+ return -1;
+ }
+
+ sock->ssn->connected = true;
+ }
/*
* Get the maximum size of data to receive.
*/
if (!sock->data) sock->data = talloc_array(sock, uint8_t,
- sock->ssn->offset);
+ sock->ssn->mtu);
+
data = sock->data;
- 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:
- goto redo;
+ if (sock->partial < 4) {
+ rcode = SSL_read(sock->ssn->ssl, data + sock->partial,
+ 4 - sock->partial);
+ if (rcode <= 0) {
+ int err = SSL_get_error(sock->ssn->ssl, rcode);
+ switch (err) {
+ case SSL_ERROR_WANT_READ:
+ case SSL_ERROR_WANT_WRITE:
+ return 0; /* do some more work later */
- case SSL_ERROR_ZERO_RETURN:
- /* remote end sent close_notify, send one back */
- SSL_shutdown(sock->ssn->ssl);
+ 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;
+ case SSL_ERROR_SYSCALL:
+ do_close:
+ return -1;
- default:
- while ((err = ERR_get_error())) {
- DEBUG("proxy recv says %s",
- ERR_error_string(err, NULL));
+ default:
+ tls_error_log(NULL, "Failed in proxy receive");
+
+ goto do_close;
}
+ }
+
+ sock->partial = rcode;
+ } /* try reading the packet header */
+ if (sock->partial < 4) return 0; /* read more data */
+
+ length = (data[2] << 8) | data[3];
+
+ /*
+ * Do these checks only once, when we read the header.
+ */
+ if (sock->partial == 4) {
+ DEBUG3("Proxy received header saying we have a packet of %u bytes",
+ (unsigned int) length);
+
+ /*
+ * FIXME: allocate a RADIUS_PACKET, and set
+ * "data" to be as large as necessary.
+ */
+ if (length > sock->ssn->mtu) {
+ INFO("Received packet will be too large! Set \"fragment_size = %u\"",
+ (data[2] << 8) | data[3]);
goto do_close;
}
}
- length = (data[2] << 8) | data[3];
- DEBUG3("Proxy received header saying we have a packet of %u bytes",
- (unsigned int) length);
+ /*
+ * Try to read some more.
+ */
+ if (sock->partial < length) {
+ rcode = SSL_read(sock->ssn->ssl, data + sock->partial,
+ length - sock->partial);
+ if (rcode <= 0) {
+ switch (SSL_get_error(sock->ssn->ssl, rcode)) {
+ case SSL_ERROR_WANT_READ:
+ case SSL_ERROR_WANT_WRITE:
+ return 0;
+
+ 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;
+ }
+ }
- if (length > sock->ssn->offset) {
- INFO("Received packet will be too large! Set \"fragment_size=%u\"",
- (data[2] << 8) | data[3]);
- goto do_close;
+ sock->partial += rcode;
}
- 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:
- 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;
- }
+ /*
+ * If we're not done, say so.
+ *
+ * Otherwise, reset the partially read data flag, and say
+ * we have a packet.
+ */
+ if (sock->partial < length) {
+ return 0;
}
+
+ sock->partial = 0; /* we've now read the packet */
+ return length;
+}
+
+
+int proxy_tls_recv(rad_listen_t *listener)
+{
+ listen_socket_t *sock = listener->data;
+ char buffer[256];
+ RADIUS_PACKET *packet;
+ uint8_t *data;
+ ssize_t data_len;
+
+ if (listener->status != RAD_LISTEN_STATUS_KNOWN) return 0;
+
+ DEBUG3("Proxy SSL socket has data to read");
+ PTHREAD_MUTEX_LOCK(&sock->mutex);
+ data_len = proxy_tls_read(listener);
PTHREAD_MUTEX_UNLOCK(&sock->mutex);
- packet = rad_alloc(sock, 0);
+ if (data_len < 0) {
+ DEBUG("Closing TLS socket to home server");
+ PTHREAD_MUTEX_LOCK(&sock->mutex);
+ tls_socket_close(listener);
+ PTHREAD_MUTEX_UNLOCK(&sock->mutex);
+ return 0;
+ }
+
+ if (data_len == 0) return 0; /* not done yet */
+
+ data = sock->data;
+
+ packet = rad_alloc(sock, false);
packet->sockfd = listener->fd;
packet->src_ipaddr = sock->other_ipaddr;
packet->src_port = sock->other_port;
packet->dst_port = sock->my_port;
packet->code = data[0];
packet->id = data[1];
- packet->data_len = length;
+ packet->data_len = data_len;
packet->data = talloc_array(packet, uint8_t, 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:
+ switch (packet->code) {
+ case PW_CODE_ACCESS_ACCEPT:
+ case PW_CODE_ACCESS_CHALLENGE:
+ case PW_CODE_ACCESS_REJECT:
break;
#ifdef WITH_ACCOUNTING
- case PW_ACCOUNTING_RESPONSE:
+ case PW_CODE_ACCOUNTING_RESPONSE:
break;
#endif
return 1;
}
+
int proxy_tls_send(rad_listen_t *listener, REQUEST *request)
{
int rcode;
listen_socket_t *sock = listener->data;
+ VERIFY_REQUEST(request);
+
+ if ((listener->status != RAD_LISTEN_STATUS_INIT) &&
+ (listener->status != RAD_LISTEN_STATUS_KNOWN)) return 0;
+
/*
* Normal proxying calls us with the data already
* encoded. The "ping home server" code does not. So,
request);
}
+ if (!sock->ssn->connected) {
+ PTHREAD_MUTEX_LOCK(&sock->mutex);
+ rcode = try_connect(sock->ssn);
+ PTHREAD_MUTEX_LOCK(&sock->mutex);
+ if (rcode == 0) return 0;
+
+ if (rcode < 0) {
+ SSL_shutdown(sock->ssn->ssl);
+ return -1;
+ }
+
+ sock->ssn->connected = true;
+ }
+
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) {
+ rcode = SSL_write(sock->ssn->ssl, request->proxy->data,
+ request->proxy->data_len);
+ if (rcode < 0) {
int err;
- while ((err = ERR_get_error())) {
- DEBUG("proxy SSL_write says %s",
- ERR_error_string(err, NULL));
+
+ err = ERR_get_error();
+ switch (err) {
+ case SSL_ERROR_NONE:
+ case SSL_ERROR_WANT_READ:
+ case SSL_ERROR_WANT_WRITE:
+ break; /* let someone else retry */
+
+ default:
+ tls_error_log(NULL, "Failed in proxy send");
+ DEBUG("Closing TLS socket to home server");
+ tls_socket_close(listener);
+ PTHREAD_MUTEX_UNLOCK(&sock->mutex);
+ return 0;
}
- PTHREAD_MUTEX_UNLOCK(&sock->mutex);
- tls_socket_close(listener);
- return 0;
}
PTHREAD_MUTEX_UNLOCK(&sock->mutex);
return 1;
}
+#endif /* WITH_PROXY */
#endif /* WITH_TLS */
+#endif /* WITH_TCP */
projects / freeradius.git / blobdiff