1 /* Copyright 2011 NORDUnet A/S. All rights reserved.
2 See the file COPYING for licensing information. */
4 #if defined HAVE_CONFIG_H
9 #include <event2/event.h>
10 #include <event2/bufferevent.h>
11 #if defined (RS_ENABLE_TLS)
12 #include <event2/bufferevent_ssl.h>
13 #include <openssl/err.h>
15 #include <radsec/radsec.h>
16 #include <radsec/radsec-impl.h>
17 #if defined (RS_ENABLE_TLS)
26 _evlog_cb (int severity, const char *msg)
31 case _EVENT_LOG_DEBUG:
32 #if !defined (DEBUG_LEVENT)
50 fprintf (stderr, "libevent: [%s] %s\n", sevstr, msg); /* FIXME: stderr? */
54 event_init_socket (struct rs_connection *conn, struct rs_peer *p)
60 conn->fd = socket (p->addr->ai_family, p->addr->ai_socktype,
61 p->addr->ai_protocol);
63 return rs_err_conn_push_fl (conn, RSE_SOCKERR, __FILE__, __LINE__,
65 errno, strerror (errno));
66 if (evutil_make_socket_nonblocking (conn->fd) < 0)
68 evutil_closesocket (conn->fd);
70 return rs_err_conn_push_fl (conn, RSE_SOCKERR, __FILE__, __LINE__,
71 "evutil_make_socket_nonblocking: %d (%s)",
72 errno, strerror (errno));
78 _conn_timeout_cb (int fd, short event, void *data)
80 struct rs_connection *conn;
83 conn = (struct rs_connection *) data;
85 if (event & EV_TIMEOUT)
87 rs_debug (("%s: connection timeout on %p (fd %d) connecting to %p\n",
88 __func__, conn, conn->fd, conn->active_peer));
89 conn->is_connecting = 0;
90 rs_err_conn_push_fl (conn, RSE_TIMEOUT_IO, __FILE__, __LINE__, NULL);
91 event_loopbreak (conn);
96 event_init_bufferevent (struct rs_connection *conn, struct rs_peer *peer)
101 if (conn->realm->type == RS_CONN_TYPE_TCP)
103 conn->bev = bufferevent_socket_new (conn->evb, conn->fd, 0);
105 return rs_err_conn_push_fl (conn, RSE_EVENT, __FILE__, __LINE__,
106 "bufferevent_socket_new");
108 #if defined (RS_ENABLE_TLS)
109 else if (conn->realm->type == RS_CONN_TYPE_TLS)
111 if (rs_tls_init (conn))
113 /* Would be convenient to pass BEV_OPT_CLOSE_ON_FREE but things
114 seem to break when be_openssl_ctrl() (in libevent) calls
115 SSL_set_bio() after BIO_new_socket() with flag=1. */
117 bufferevent_openssl_socket_new (conn->evb, conn->fd, conn->tls_ssl,
118 BUFFEREVENT_SSL_CONNECTING, 0);
120 return rs_err_conn_push_fl (conn, RSE_EVENT, __FILE__, __LINE__,
121 "bufferevent_openssl_socket_new");
123 #endif /* RS_ENABLE_TLS */
126 return rs_err_conn_push_fl (conn, RSE_INTERNAL, __FILE__, __LINE__,
127 "%s: unknown connection type: %d", __func__,
135 event_do_connect (struct rs_connection *conn)
141 assert (conn->active_peer);
142 p = conn->active_peer;
146 char host[80], serv[80];
148 getnameinfo (p->addr->ai_addr,
150 host, sizeof(host), serv, sizeof(serv),
151 0 /* NI_NUMERICHOST|NI_NUMERICSERV*/);
152 rs_debug (("%s: connecting to %s:%s\n", __func__, host, serv));
156 if (p->conn->bev) /* TCP */
158 event_set_timeout (conn);
159 err = bufferevent_socket_connect (p->conn->bev, p->addr->ai_addr,
160 p->addr->ai_addrlen);
162 rs_err_conn_push_fl (p->conn, RSE_EVENT, __FILE__, __LINE__,
163 "bufferevent_socket_connect: %s",
164 evutil_gai_strerror (err));
166 p->conn->is_connecting = 1;
170 err = connect (p->conn->fd, p->addr->ai_addr, p->addr->ai_addrlen);
173 sockerr = evutil_socket_geterror (p->conn->fd);
174 rs_debug (("%s: %d: connect: %d (%s)\n", __func__, p->conn->fd,
175 sockerr, evutil_socket_error_to_string (sockerr)));
176 rs_err_conn_push_fl (p->conn, RSE_SOCKERR, __FILE__, __LINE__,
177 "%d: connect: %d (%s)", p->conn->fd, sockerr,
178 evutil_socket_error_to_string (sockerr));
184 event_loopbreak (struct rs_connection *conn)
186 int err = event_base_loopbreak (conn->evb);
188 rs_err_conn_push_fl (conn, RSE_EVENT, __FILE__, __LINE__,
189 "event_base_loopbreak: %s",
190 evutil_gai_strerror (err));
196 event_set_timeout (struct rs_connection *conn)
201 conn->tev = evtimer_new (conn->evb, _conn_timeout_cb, conn);
203 return rs_err_conn_push_fl (conn, RSE_EVENT, __FILE__, __LINE__,
205 tv.tv_sec = conn->realm->timeout;
207 evtimer_add (conn->tev, &tv);
213 event_on_disconnect (struct rs_connection *conn)
215 conn->is_connecting = 0;
216 conn->is_connected = 0;
217 rs_debug (("%s: %p disconnected\n", __func__, conn->active_peer));
218 if (conn->callbacks.disconnected_cb)
219 conn->callbacks.disconnected_cb (conn->user_data);
223 event_on_connect (struct rs_connection *conn, struct rs_packet *pkt)
225 assert (!conn->is_connecting);
226 conn->is_connected = 1;
227 rs_debug (("%s: %p connected\n", __func__, conn->active_peer));
229 evtimer_del (conn->tev);
230 if (conn->callbacks.connected_cb)
231 conn->callbacks.connected_cb (conn->user_data);
233 packet_do_send (pkt);
237 event_init_eventbase (struct rs_connection *conn)
243 event_enable_debug_mode ();
245 event_set_log_callback (_evlog_cb);
246 conn->evb = event_base_new ();
248 return rs_err_conn_push_fl (conn, RSE_EVENT, __FILE__, __LINE__,