1 /* Copyright 2010, 2011 NORDUnet A/S. All rights reserved.
2 See the file COPYING for licensing information. */
4 #if defined HAVE_CONFIG_H
10 #include <event2/event.h>
11 #include <event2/bufferevent.h>
12 #include <radsec/radsec.h>
13 #include <radsec/radsec-impl.h>
21 conn_close (struct rs_connection **connp)
26 if ((*connp)->is_connected)
27 r = rs_conn_disconnect (*connp);
34 conn_user_dispatch_p (const struct rs_connection *conn)
38 return (conn->callbacks.connected_cb ||
39 conn->callbacks.disconnected_cb ||
40 conn->callbacks.received_cb ||
41 conn->callbacks.sent_cb);
45 rs_conn_create (struct rs_context *ctx,
46 struct rs_connection **conn,
49 struct rs_connection *c;
51 c = (struct rs_connection *) malloc (sizeof(struct rs_connection));
53 return rs_err_ctx_push_fl (ctx, RSE_NOMEM, __FILE__, __LINE__, NULL);
55 memset (c, 0, sizeof(struct rs_connection));
60 struct rs_realm *r = rs_conf_find_realm (ctx, config);
66 c->peers = r->peers; /* FIXME: Copy instead? */
67 for (p = c->peers; p; p = p->next)
69 c->timeout.tv_sec = r->timeout;
70 c->tryagain = r->retries;
74 c->realm = rs_malloc (ctx, sizeof (struct rs_realm));
76 return rs_err_ctx_push_fl (ctx, RSE_NOMEM, __FILE__, __LINE__,
78 memset (c->realm, 0, sizeof (struct rs_realm));
88 rs_conn_set_type (struct rs_connection *conn, rs_conn_type_t type)
92 conn->realm->type = type;
96 rs_conn_add_listener (struct rs_connection *conn,
101 return rs_err_conn_push_fl (conn, RSE_NOSYS, __FILE__, __LINE__, NULL);
106 rs_conn_disconnect (struct rs_connection *conn)
112 err = evutil_closesocket (conn->fd);
118 rs_conn_destroy (struct rs_connection *conn)
124 /* NOTE: conn->realm is owned by context. */
125 /* NOTE: conn->peers is owned by context. */
127 if (conn->is_connected)
128 err = rs_conn_disconnect (conn);
130 if (conn->tls_ssl) /* FIXME: Free SSL strucxt in rs_conn_disconnect? */
131 SSL_free (conn->tls_ssl);
133 SSL_CTX_free (conn->tls_ctx);
136 event_free (conn->tev);
138 bufferevent_free (conn->bev);
140 event_free (conn->rev);
142 event_free (conn->wev);
144 event_base_free (conn->evb);
146 rs_free (conn->ctx, conn);
152 rs_conn_set_eventbase (struct rs_connection *conn, struct event_base *eb)
154 return rs_err_conn_push_fl (conn, RSE_NOSYS, __FILE__, __LINE__, NULL);
158 rs_conn_set_callbacks (struct rs_connection *conn, struct rs_conn_callbacks *cb)
161 memcpy (&conn->callbacks, cb, sizeof (conn->callbacks));
165 rs_conn_del_callbacks (struct rs_connection *conn)
168 memset (&conn->callbacks, 0, sizeof (conn->callbacks));
171 struct rs_conn_callbacks *
172 rs_conn_get_callbacks(struct rs_connection *conn)
175 return &conn->callbacks;
179 rs_conn_select_peer (struct rs_connection *conn, const char *name)
181 return rs_err_conn_push_fl (conn, RSE_NOSYS, __FILE__, __LINE__, NULL);
185 rs_conn_get_current_peer (struct rs_connection *conn,
189 return rs_err_conn_push_fl (conn, RSE_NOSYS, __FILE__, __LINE__, NULL);
192 int rs_conn_fd (struct rs_connection *conn)
195 assert (conn->active_peer);
200 _rcb (struct rs_packet *packet, void *user_data)
202 struct rs_packet *pkt = (struct rs_packet *) user_data;
206 pkt->flags |= rs_packet_received_flag;
208 bufferevent_disable (pkt->conn->bev, EV_WRITE|EV_READ);
210 event_del (pkt->conn->rev);
214 rs_conn_receive_packet (struct rs_connection *conn,
215 struct rs_packet *req_msg,
216 struct rs_packet **pkt_out)
219 struct rs_packet *pkt = NULL;
222 assert (conn->realm);
223 assert (!conn_user_dispatch_p (conn)); /* Dispatching mode only. */
225 if (rs_packet_create (conn, &pkt))
229 assert (conn->fd >= 0);
231 conn->callbacks.received_cb = _rcb;
232 conn->user_data = pkt;
233 pkt->flags &= ~rs_packet_received_flag;
235 if (conn->bev) /* TCP. */
237 bufferevent_setwatermark (conn->bev, EV_READ, RS_HEADER_LEN, 0);
238 bufferevent_setcb (conn->bev, tcp_read_cb, NULL, tcp_event_cb, pkt);
239 bufferevent_enable (conn->bev, EV_READ);
243 /* Put fresh packet in user_data for the callback and enable the
245 event_assign (conn->rev, conn->evb, event_get_fd (conn->rev),
246 EV_READ, event_get_callback (conn->rev), pkt);
247 err = event_add (conn->rev, NULL);
249 return rs_err_conn_push_fl (pkt->conn, RSE_EVENT, __FILE__, __LINE__,
251 evutil_gai_strerror (err));
253 /* Activae retransmission timer. */
254 conn_activate_timeout (pkt->conn);
257 rs_debug (("%s: entering event loop\n", __func__));
258 err = event_base_dispatch (conn->evb);
259 conn->callbacks.received_cb = NULL;
261 return rs_err_conn_push_fl (pkt->conn, RSE_EVENT, __FILE__, __LINE__,
262 "event_base_dispatch: %s",
263 evutil_gai_strerror (err));
264 rs_debug (("%s: event loop done\n", __func__));
266 if ((pkt->flags & rs_packet_received_flag) == 0
268 && packet_verify_response (pkt->conn, pkt, req_msg) != RSE_OK))
270 assert (rs_err_conn_peek_code (pkt->conn));
271 return rs_err_conn_peek_code (conn);
280 rs_conn_set_timeout(struct rs_connection *conn, struct timeval *tv)
288 conn_activate_timeout (struct rs_connection *conn)
293 if (conn->timeout.tv_sec || conn->timeout.tv_usec)
295 rs_debug (("%s: activating timer: %d.%d\n", __func__,
296 conn->timeout.tv_sec, conn->timeout.tv_usec));
297 if (evtimer_add (conn->tev, &conn->timeout))
298 return rs_err_conn_push_fl (conn, RSE_EVENT, __FILE__, __LINE__,
299 "evtimer_add: %d", errno);