-#include <string.h>
-#include <freeradius/libradius.h>
-#include "libradsec.h"
-#include "libradsec-impl.h"
+/* Copyright 2010, 2011 NORDUnet A/S. All rights reserved.
+ See the file COPYING for licensing information. */
+#if defined HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <assert.h>
+#include <radius/client.h>
+#include <event2/bufferevent.h>
+#include <radsec/radsec.h>
+#include <radsec/radsec-impl.h>
+#include "conn.h"
+#include "debug.h"
+#include "packet.h"
+
+#if defined (DEBUG)
+#include <netdb.h>
+#include <sys/socket.h>
+#include <event2/buffer.h>
+#endif
+
+int
+packet_verify_response (struct rs_connection *conn,
+ struct rs_packet *response,
+ struct rs_packet *request)
+{
+ int err;
+
+ assert (conn);
+ assert (conn->active_peer);
+ assert (conn->active_peer->secret);
+ assert (response);
+ assert (response->rpkt);
+ assert (request);
+ assert (request->rpkt);
+
+ response->rpkt->secret = conn->active_peer->secret;
+ response->rpkt->sizeof_secret = strlen (conn->active_peer->secret);
+
+ /* Verify header and message authenticator. */
+ err = nr_packet_verify (response->rpkt, request->rpkt);
+ if (err)
+ {
+ if (conn->is_connected)
+ rs_conn_disconnect(conn);
+ return rs_err_conn_push_fl (conn, -err, __FILE__, __LINE__,
+ "nr_packet_verify");
+ }
+
+ /* Decode and decrypt. */
+ err = nr_packet_decode (response->rpkt, request->rpkt);
+ if (err)
+ {
+ if (conn->is_connected)
+ rs_conn_disconnect(conn);
+ return rs_err_conn_push_fl (conn, -err, __FILE__, __LINE__,
+ "nr_packet_decode");
+ }
+
+ return RSE_OK;
+}
+
+
+/* Badly named function for preparing a RADIUS message and queue it.
+ FIXME: Rename. */
+int
+packet_do_send (struct rs_packet *pkt)
+{
+ int err;
+
+ assert (pkt);
+ assert (pkt->conn);
+ assert (pkt->conn->active_peer);
+ assert (pkt->conn->active_peer->secret);
+ assert (pkt->rpkt);
+
+ pkt->rpkt->secret = pkt->conn->active_peer->secret;
+ pkt->rpkt->sizeof_secret = strlen (pkt->rpkt->secret);
+
+ /* Encode message. */
+ err = nr_packet_encode (pkt->rpkt, NULL);
+ if (err < 0)
+ return rs_err_conn_push_fl (pkt->conn, -err, __FILE__, __LINE__,
+ "nr_packet_encode");
+ /* Sign message. */
+ err = nr_packet_sign (pkt->rpkt, NULL);
+ if (err < 0)
+ return rs_err_conn_push_fl (pkt->conn, -err, __FILE__, __LINE__,
+ "nr_packet_sign");
+#if defined (DEBUG)
+ {
+ char host[80], serv[80];
+
+ getnameinfo (pkt->conn->active_peer->addr_cache->ai_addr,
+ pkt->conn->active_peer->addr_cache->ai_addrlen,
+ host, sizeof(host), serv, sizeof(serv),
+ 0 /* NI_NUMERICHOST|NI_NUMERICSERV*/);
+ rs_debug (("%s: about to send this to %s:%s:\n", __func__, host, serv));
+ rs_dump_packet (pkt);
+ }
+#endif
+
+ /* Put message in output buffer. */
+ if (pkt->conn->bev) /* TCP. */
+ {
+ int err = bufferevent_write (pkt->conn->bev, pkt->rpkt->data,
+ pkt->rpkt->length);
+ if (err < 0)
+ return rs_err_conn_push_fl (pkt->conn, RSE_EVENT, __FILE__, __LINE__,
+ "bufferevent_write: %s",
+ evutil_gai_strerror (err));
+ }
+ else /* UDP. */
+ {
+ struct rs_packet **pp = &pkt->conn->out_queue;
+
+ while (*pp && (*pp)->next)
+ *pp = (*pp)->next;
+ *pp = pkt;
+ }
+
+ return RSE_OK;
+}
+/* Public functions. */
int
-_packet_create (struct rs_connection *conn, struct rs_packet **pkt_out,
- int code)
+rs_packet_create (struct rs_connection *conn, struct rs_packet **pkt_out)
{
struct rs_packet *p;
RADIUS_PACKET *rpkt;
+ int err;
*pkt_out = NULL;
- rpkt = rad_alloc (1);
- if (!rpkt)
- return rs_conn_err_push (conn, RSE_NOMEM, __func__);
- rpkt->id = -1;
- rpkt->code = code;
+ rpkt = rs_malloc (conn->ctx, sizeof(*rpkt) + RS_MAX_PACKET_LEN);
+ if (rpkt == NULL)
+ return rs_err_conn_push (conn, RSE_NOMEM, __func__);
- p = (struct rs_packet *) malloc (sizeof (struct rs_packet));
- if (!p) {
- rad_free (&rpkt);
- return rs_conn_err_push (conn, RSE_NOMEM, __func__);
- }
- memset (p, 0, sizeof (struct rs_packet));
+ /*
+ * This doesn't make sense; the packet identifier is constant for
+ * an entire conversation. A separate API should be provided to
+ * allow the application to set the packet ID, or a conversation
+ * object should group related packets together.
+ */
+#if 0
+ rpkt->id = conn->nextid++
+#endif
+
+ err = nr_packet_init (rpkt, NULL, NULL,
+ PW_ACCESS_REQUEST,
+ rpkt + 1, RS_MAX_PACKET_LEN);
+ if (err < 0)
+ return rs_err_conn_push (conn, -err, __func__);
+
+ p = (struct rs_packet *) rs_calloc (conn->ctx, 1, sizeof (*p));
+ if (p == NULL)
+ {
+ rs_free (conn->ctx, rpkt);
+ return rs_err_conn_push (conn, RSE_NOMEM, __func__);
+ }
+ p->conn = conn;
p->rpkt = rpkt;
*pkt_out = p;
}
int
-rs_packet_create_acc_request (struct rs_connection *conn,
- struct rs_packet **pkt_out,
- const char *user_name, const char *user_pw)
+rs_packet_create_authn_request (struct rs_connection *conn,
+ struct rs_packet **pkt_out,
+ const char *user_name,
+ const char *user_pw,
+ const char *secret)
{
struct rs_packet *pkt;
- struct rs_attr *attr;
+ int err;
- if (_packet_create (conn, pkt_out, PW_AUTHENTICATION_REQUEST))
+ if (rs_packet_create (conn, pkt_out))
return -1;
+
pkt = *pkt_out;
+ pkt->rpkt->code = PW_ACCESS_REQUEST;
- if (rs_attr_create (conn, &attr, "User-Name", user_name))
- return -1;
- if (rs_packet_add_attr (pkt, attr))
- return -1;
+ if (user_name)
+ {
+ err = rs_packet_append_avp (pkt, PW_USER_NAME, 0, user_name, 0);
+ if (err)
+ return err;
+ }
- if (rs_attr_create (conn, &attr, "User-Password", user_name))
- return -1;
- if (rs_packet_add_attr (pkt, attr))
- return -1;
+ if (user_pw)
+ {
+ pkt->rpkt->secret = secret;
+ err = rs_packet_append_avp (pkt, PW_USER_PASSWORD, 0, user_pw, 0);
+ if (err)
+ return err;
+ }
return RSE_OK;
}
+void
+rs_packet_destroy (struct rs_packet *pkt)
+{
+ assert (pkt);
+ assert (pkt->conn);
+ assert (pkt->conn->ctx);
+
+ rs_avp_free (&pkt->rpkt->vps);
+ rs_free (pkt->conn->ctx, pkt->rpkt);
+ rs_free (pkt->conn->ctx, pkt);
+}
+
int
-rs_packet_send (struct rs_conn *conn, const struct rs_packet *pkt,
- void *user_data)
+rs_packet_append_avp (struct rs_packet *pkt,
+ unsigned int attr, unsigned int vendor,
+ const void *data, size_t data_len)
{
- rad_encode (pkt->rpkt, NULL, pkt->conn->secret);
-#if defined (DEBUG)
- fprintf (stderr, "%s: about to send this to %"
- print_hex (pkt);
-#endif
+ const DICT_ATTR *da;
+ int err;
-
+ assert (pkt);
- return RSE_NOSYS;
+ da = nr_dict_attr_byvalue (attr, vendor);
+ if (da == NULL)
+ return RSE_ATTR_TYPE_UNKNOWN;
+
+ err = nr_packet_attr_append (pkt->rpkt, NULL, da, data, data_len);
+ if (err < 0)
+ return rs_err_conn_push (pkt->conn, -err, __func__);
+
+ return RSE_OK;
+}
+
+void
+rs_packet_avps (struct rs_packet *pkt, rs_avp ***vps)
+{
+ assert (pkt);
+ *vps = &pkt->rpkt->vps;
}
-int rs_packet_receive(struct rs_conn *conn, struct rs_packet **pkt)
+unsigned int
+rs_packet_code (struct rs_packet *pkt)
{
- return RSE_NOSYS;
+ assert (pkt);
+ return pkt->rpkt->code;
+}
+
+rs_const_avp *
+rs_packet_find_avp (struct rs_packet *pkt, unsigned int attr, unsigned int vendor)
+{
+ assert (pkt);
+ return rs_avp_find_const (pkt->rpkt->vps, attr, vendor);
+}
+
+int
+rs_packet_set_id (struct rs_packet *pkt, int id)
+{
+ int old = pkt->rpkt->id;
+
+ pkt->rpkt->id = id;
+
+ return old;
}
projects / radsecproxy.git / blobdiff