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 defined (RS_ENABLE_TLS)
131 if (conn->tls_ssl) /* FIXME: Free SSL strucxt in rs_conn_disconnect? */
132 SSL_free (conn->tls_ssl);
134 SSL_CTX_free (conn->tls_ctx);
138 event_free (conn->tev);
140 bufferevent_free (conn->bev);
142 event_free (conn->rev);
144 event_free (conn->wev);
146 event_base_free (conn->evb);
148 rs_free (conn->ctx, conn);
154 rs_conn_set_eventbase (struct rs_connection *conn, struct event_base *eb)
156 return rs_err_conn_push_fl (conn, RSE_NOSYS, __FILE__, __LINE__, NULL);
160 rs_conn_set_callbacks (struct rs_connection *conn, struct rs_conn_callbacks *cb)
163 memcpy (&conn->callbacks, cb, sizeof (conn->callbacks));
167 rs_conn_del_callbacks (struct rs_connection *conn)
170 memset (&conn->callbacks, 0, sizeof (conn->callbacks));
173 struct rs_conn_callbacks *
174 rs_conn_get_callbacks(struct rs_connection *conn)
177 return &conn->callbacks;
181 rs_conn_select_peer (struct rs_connection *conn, const char *name)
183 return rs_err_conn_push_fl (conn, RSE_NOSYS, __FILE__, __LINE__, NULL);
187 rs_conn_get_current_peer (struct rs_connection *conn,
191 return rs_err_conn_push_fl (conn, RSE_NOSYS, __FILE__, __LINE__, NULL);
194 int rs_conn_fd (struct rs_connection *conn)
197 assert (conn->active_peer);
202 _rcb (struct rs_packet *packet, void *user_data)
204 struct rs_packet *pkt = (struct rs_packet *) user_data;
208 pkt->flags |= rs_packet_received_flag;
210 bufferevent_disable (pkt->conn->bev, EV_WRITE|EV_READ);
212 event_del (pkt->conn->rev);
216 rs_conn_receive_packet (struct rs_connection *conn,
217 struct rs_packet *req_msg,
218 struct rs_packet **pkt_out)
221 struct rs_packet *pkt = NULL;
224 assert (conn->realm);
225 assert (!conn_user_dispatch_p (conn)); /* Blocking mode only. */
227 if (rs_packet_create (conn, &pkt))
231 assert (conn->fd >= 0);
233 conn->callbacks.received_cb = _rcb;
234 conn->user_data = pkt;
235 pkt->flags &= ~rs_packet_received_flag;
237 if (conn->bev) /* TCP. */
239 bufferevent_setwatermark (conn->bev, EV_READ, RS_HEADER_LEN, 0);
240 bufferevent_setcb (conn->bev, tcp_read_cb, NULL, tcp_event_cb, pkt);
241 bufferevent_enable (conn->bev, EV_READ);
245 /* Put fresh packet in user_data for the callback and enable the
247 event_assign (conn->rev, conn->evb, event_get_fd (conn->rev),
248 EV_READ, event_get_callback (conn->rev), pkt);
249 err = event_add (conn->rev, NULL);
251 return rs_err_conn_push_fl (pkt->conn, RSE_EVENT, __FILE__, __LINE__,
253 evutil_gai_strerror (err));
255 /* Activate retransmission timer. */
256 conn_activate_timeout (pkt->conn);
259 rs_debug (("%s: entering event loop\n", __func__));
260 err = event_base_dispatch (conn->evb);
261 conn->callbacks.received_cb = NULL;
263 return rs_err_conn_push_fl (pkt->conn, RSE_EVENT, __FILE__, __LINE__,
264 "event_base_dispatch: %s",
265 evutil_gai_strerror (err));
266 rs_debug (("%s: event loop done\n", __func__));
268 if ((pkt->flags & rs_packet_received_flag) == 0
270 && packet_verify_response (pkt->conn, pkt, req_msg) != RSE_OK))
272 if (rs_err_conn_peek_code (pkt->conn) == RSE_OK)
273 /* No packet and no error on the stack _should_ mean that the
274 server hung up on us. */
275 rs_err_conn_push (pkt->conn, RSE_DISCO, "no response");
276 return rs_err_conn_peek_code (conn);
285 rs_conn_set_timeout(struct rs_connection *conn, struct timeval *tv)
293 conn_activate_timeout (struct rs_connection *conn)
298 if (conn->timeout.tv_sec || conn->timeout.tv_usec)
300 rs_debug (("%s: activating timer: %d.%d\n", __func__,
301 conn->timeout.tv_sec, conn->timeout.tv_usec));
302 if (evtimer_add (conn->tev, &conn->timeout))
303 return rs_err_conn_push_fl (conn, RSE_EVENT, __FILE__, __LINE__,
304 "evtimer_add: %d", errno);