1 /* Copyright 2010, 2011 NORDUnet A/S. All rights reserved.
2 See the file COPYING for licensing information. */
4 #if defined HAVE_CONFIG_H
11 #include <event2/event.h>
12 #include <event2/bufferevent.h>
13 #include <radsec/radsec.h>
14 #include <radsec/radsec-impl.h>
19 rs_conn_create (struct rs_context *ctx, struct rs_connection **conn,
22 struct rs_connection *c;
24 c = (struct rs_connection *) malloc (sizeof(struct rs_connection));
26 return rs_err_ctx_push_fl (ctx, RSE_NOMEM, __FILE__, __LINE__, NULL);
28 memset (c, 0, sizeof(struct rs_connection));
33 struct rs_realm *r = rs_conf_find_realm (ctx, config);
39 c->peers = r->peers; /* FIXME: Copy instead? */
40 for (p = c->peers; p; p = p->next)
42 c->tryagain = r->retries;
46 c->realm = rs_malloc (ctx, sizeof (struct rs_realm));
48 return rs_err_ctx_push_fl (ctx, RSE_NOMEM, __FILE__, __LINE__,
50 memset (c->realm, 0, sizeof (struct rs_realm));
60 rs_conn_set_type (struct rs_connection *conn, rs_conn_type_t type)
64 conn->realm->type = type;
68 struct rs_error * /* FIXME: Return int as all the others? */
69 _rs_resolv (struct evutil_addrinfo **addr, rs_conn_type_t type,
70 const char *hostname, const char *service)
73 struct evutil_addrinfo hints, *res = NULL;
75 memset (&hints, 0, sizeof(struct evutil_addrinfo));
76 hints.ai_family = AF_INET; /* IPv4 only. TODO: Set AF_UNSPEC. */
77 hints.ai_flags = AI_ADDRCONFIG;
80 case RS_CONN_TYPE_NONE:
81 return _rs_err_create (RSE_INVALID_CONN, __FILE__, __LINE__, NULL, NULL);
82 case RS_CONN_TYPE_TCP:
84 case RS_CONN_TYPE_TLS:
85 hints.ai_socktype = SOCK_STREAM;
86 hints.ai_protocol = IPPROTO_TCP;
88 case RS_CONN_TYPE_UDP:
90 case RS_CONN_TYPE_DTLS:
91 hints.ai_socktype = SOCK_DGRAM;
92 hints.ai_protocol = IPPROTO_UDP;
95 return _rs_err_create (RSE_INVALID_CONN, __FILE__, __LINE__, NULL, NULL);
97 err = evutil_getaddrinfo (hostname, service, &hints, &res);
99 return _rs_err_create (RSE_BADADDR, __FILE__, __LINE__,
100 "%s:%s: bad host name or service name (%s)",
101 hostname, service, evutil_gai_strerror(err));
102 *addr = res; /* Simply use first result. */
107 rs_conn_add_listener (struct rs_connection *conn, rs_conn_type_t type,
108 const char *hostname, int port)
110 return rs_err_conn_push_fl (conn, RSE_NOSYS, __FILE__, __LINE__, NULL);
115 rs_conn_disconnect (struct rs_connection *conn)
121 err = evutil_closesocket (conn->fd);
127 rs_conn_destroy (struct rs_connection *conn)
133 /* NOTE: conn->realm is owned by context. */
134 /* NOTE: conn->peers is owned by context. */
136 if (conn->is_connected)
137 err = rs_conn_disconnect (conn);
139 event_free (conn->tev);
141 bufferevent_free (conn->bev);
143 event_base_free (conn->evb);
145 /* TODO: free tls_ctx */
146 /* TODO: free tls_ssl */
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 conn->user_dispatch_flag = 1;
162 memcpy (&conn->callbacks, cb, sizeof (conn->callbacks));
166 rs_conn_del_callbacks (struct rs_connection *conn)
169 conn->user_dispatch_flag = 0;
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, const char *name,
190 return rs_err_conn_push_fl (conn, RSE_NOSYS, __FILE__, __LINE__, NULL);
193 int rs_conn_fd (struct rs_connection *conn)
196 assert (conn->active_peer);
201 _rcb (struct rs_packet *packet, void *user_data)
203 struct rs_packet *pkt = (struct rs_packet *) user_data;
207 bufferevent_disable (pkt->conn->bev, EV_WRITE|EV_READ);
209 event_del (pkt->conn->rev);
212 /* Special function used in libradsec blocking dispatching mode,
213 i.e. with socket set to block on read/write and with no libradsec
214 callbacks registered.
216 For any other use of libradsec, a the received_cb callback should
217 be registered in the callbacks member of struct rs_connection.
219 On successful reception, verification and decoding of a RADIUS
220 message, PKT_OUT will upon return point at a pointer to a struct
221 rs_packet containing the message.
223 If anything goes wrong or if the read times out (TODO: explain),
224 PKT_OUT will point at the NULL pointer and one or more errors are
225 pushed on the connection (available through rs_err_conn_pop()). */
228 rs_conn_receive_packet (struct rs_connection *conn,
229 struct rs_packet *request,
230 struct rs_packet **pkt_out)
233 struct rs_packet *pkt = NULL;
236 assert (conn->realm);
237 assert (!conn->user_dispatch_flag); /* Dispatching mode only. */
239 if (rs_packet_create (conn, pkt_out))
243 pkt->original = request;
247 assert (conn->active_peer);
248 assert (conn->fd >= 0);
250 conn->callbacks.received_cb = _rcb;
251 conn->user_data = pkt;
254 bufferevent_setwatermark (conn->bev, EV_READ, RS_HEADER_LEN, 0);
255 bufferevent_setcb (conn->bev, tcp_read_cb, NULL, tcp_event_cb, pkt);
256 bufferevent_enable (conn->bev, EV_READ);
260 err = event_add (conn->rev, NULL);
262 return rs_err_conn_push_fl (pkt->conn, RSE_EVENT, __FILE__, __LINE__,
264 evutil_gai_strerror (err));
268 rs_debug (("%s: entering event loop\n", __func__));
269 err = event_base_dispatch (conn->evb);
270 conn->callbacks.received_cb = NULL;
272 return rs_err_conn_push_fl (pkt->conn, RSE_EVENT, __FILE__, __LINE__,
273 "event_base_dispatch: %s",
274 evutil_gai_strerror (err));
275 rs_debug (("%s: event loop done\n", __func__));
277 if (!pkt->valid_flag)
281 rs_dump_packet (pkt);
284 pkt->original = NULL; /* FIXME: Why? */