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 r = rs_conn_destroy (*connp);
33 conn_user_dispatch_p (const struct rs_connection *conn)
37 return (conn->callbacks.connected_cb ||
38 conn->callbacks.disconnected_cb ||
39 conn->callbacks.received_cb ||
40 conn->callbacks.sent_cb);
44 rs_conn_create (struct rs_context *ctx,
45 struct rs_connection **conn,
48 struct rs_connection *c;
50 c = (struct rs_connection *) malloc (sizeof(struct rs_connection));
52 return rs_err_ctx_push_fl (ctx, RSE_NOMEM, __FILE__, __LINE__, NULL);
54 memset (c, 0, sizeof(struct rs_connection));
59 struct rs_realm *r = rs_conf_find_realm (ctx, config);
65 c->peers = r->peers; /* FIXME: Copy instead? */
66 for (p = c->peers; p; p = p->next)
68 c->timeout.tv_sec = r->timeout;
69 c->tryagain = r->retries;
73 c->realm = rs_malloc (ctx, sizeof (struct rs_realm));
75 return rs_err_ctx_push_fl (ctx, RSE_NOMEM, __FILE__, __LINE__,
77 memset (c->realm, 0, sizeof (struct rs_realm));
87 rs_conn_set_type (struct rs_connection *conn, rs_conn_type_t type)
91 conn->realm->type = type;
95 rs_conn_add_listener (struct rs_connection *conn,
100 return rs_err_conn_push_fl (conn, RSE_NOSYS, __FILE__, __LINE__, NULL);
105 rs_conn_disconnect (struct rs_connection *conn)
111 err = evutil_closesocket (conn->fd);
117 rs_conn_destroy (struct rs_connection *conn)
123 /* NOTE: conn->realm is owned by context. */
124 /* NOTE: conn->peers is owned by context. */
126 if (conn->is_connected)
127 err = rs_conn_disconnect (conn);
129 event_free (conn->tev);
131 bufferevent_free (conn->bev);
133 event_base_free (conn->evb);
135 event_free (conn->rev);
137 event_free (conn->wev);
139 /* TODO: free tls_ctx */
140 /* TODO: free tls_ssl */
142 rs_free (conn->ctx, conn);
148 rs_conn_set_eventbase (struct rs_connection *conn, struct event_base *eb)
150 return rs_err_conn_push_fl (conn, RSE_NOSYS, __FILE__, __LINE__, NULL);
154 rs_conn_set_callbacks (struct rs_connection *conn, struct rs_conn_callbacks *cb)
157 memcpy (&conn->callbacks, cb, sizeof (conn->callbacks));
161 rs_conn_del_callbacks (struct rs_connection *conn)
164 memset (&conn->callbacks, 0, sizeof (conn->callbacks));
167 struct rs_conn_callbacks *
168 rs_conn_get_callbacks(struct rs_connection *conn)
171 return &conn->callbacks;
175 rs_conn_select_peer (struct rs_connection *conn, const char *name)
177 return rs_err_conn_push_fl (conn, RSE_NOSYS, __FILE__, __LINE__, NULL);
181 rs_conn_get_current_peer (struct rs_connection *conn,
185 return rs_err_conn_push_fl (conn, RSE_NOSYS, __FILE__, __LINE__, NULL);
188 int rs_conn_fd (struct rs_connection *conn)
191 assert (conn->active_peer);
196 _rcb (struct rs_packet *packet, void *user_data)
198 struct rs_packet *pkt = (struct rs_packet *) user_data;
202 pkt->flags |= rs_packet_received_flag;
204 bufferevent_disable (pkt->conn->bev, EV_WRITE|EV_READ);
206 event_del (pkt->conn->rev);
210 rs_conn_receive_packet (struct rs_connection *conn,
211 struct rs_packet *req_msg,
212 struct rs_packet **pkt_out)
215 struct rs_packet *pkt = NULL;
218 assert (conn->realm);
219 assert (!conn_user_dispatch_p (conn)); /* Dispatching mode only. */
221 if (rs_packet_create (conn, &pkt))
225 assert (conn->fd >= 0);
227 conn->callbacks.received_cb = _rcb;
228 conn->user_data = pkt;
229 pkt->flags &= ~rs_packet_received_flag;
231 if (conn->bev) /* TCP. */
233 bufferevent_setwatermark (conn->bev, EV_READ, RS_HEADER_LEN, 0);
234 bufferevent_setcb (conn->bev, tcp_read_cb, NULL, tcp_event_cb, pkt);
235 bufferevent_enable (conn->bev, EV_READ);
239 /* Put fresh packet in user_data for the callback and enable the
241 event_assign (conn->rev, conn->evb, event_get_fd (conn->rev),
242 EV_READ, event_get_callback (conn->rev), pkt);
243 err = event_add (conn->rev, NULL);
245 return rs_err_conn_push_fl (pkt->conn, RSE_EVENT, __FILE__, __LINE__,
247 evutil_gai_strerror (err));
249 /* Activae retransmission timer. */
250 conn_activate_timeout (pkt->conn);
253 rs_debug (("%s: entering event loop\n", __func__));
254 err = event_base_dispatch (conn->evb);
255 conn->callbacks.received_cb = NULL;
257 return rs_err_conn_push_fl (pkt->conn, RSE_EVENT, __FILE__, __LINE__,
258 "event_base_dispatch: %s",
259 evutil_gai_strerror (err));
260 rs_debug (("%s: event loop done\n", __func__));
262 if ((pkt->flags & rs_packet_received_flag) == 0
264 && packet_verify_response (pkt->conn, pkt, req_msg) != RSE_OK))
266 assert (rs_err_conn_peek_code (pkt->conn));
267 return rs_err_conn_peek_code (conn);
276 rs_conn_set_timeout(struct rs_connection *conn, struct timeval *tv)
284 conn_activate_timeout (struct rs_connection *conn)
289 if (conn->timeout.tv_sec || conn->timeout.tv_usec)
291 rs_debug (("%s: activating timer: %d.%d\n", __func__,
292 conn->timeout.tv_sec, conn->timeout.tv_usec));
293 if (evtimer_add (conn->tev, &conn->timeout))
294 return rs_err_conn_push_fl (conn, RSE_EVENT, __FILE__, __LINE__,
295 "evtimer_add: %d", errno);