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>
19 #if defined (RS_ENABLE_TLS)
28 _evlog_cb (int severity, const char *msg)
33 case _EVENT_LOG_DEBUG:
34 #if !defined (DEBUG_LEVENT)
52 fprintf (stderr, "libevent: [%s] %s\n", sevstr, msg); /* FIXME: stderr? */
56 event_conn_timeout_cb (int fd, short event, void *data)
58 struct rs_connection *conn = NULL;
61 conn = (struct rs_connection *) data;
63 if (event & EV_TIMEOUT)
65 rs_debug (("%s: connection timeout on %p (fd %d) connecting to %p\n",
66 __func__, conn, conn->fd, conn->active_peer));
67 conn->is_connecting = 0;
68 rs_err_conn_push_fl (conn, RSE_TIMEOUT_CONN, __FILE__, __LINE__, NULL);
69 event_loopbreak (conn);
74 event_retransmit_timeout_cb (int fd, short event, void *data)
76 struct rs_connection *conn = NULL;
79 conn = (struct rs_connection *) data;
81 if (event & EV_TIMEOUT)
83 rs_debug (("%s: retransmission timeout on %p (fd %d) sending to %p\n",
84 __func__, conn, conn->fd, conn->active_peer));
85 rs_err_conn_push_fl (conn, RSE_TIMEOUT_IO, __FILE__, __LINE__, NULL);
86 event_loopbreak (conn);
91 event_init_socket (struct rs_connection *conn, struct rs_peer *p)
97 conn->fd = socket (p->addr->ai_family, p->addr->ai_socktype,
98 p->addr->ai_protocol);
100 return rs_err_conn_push_fl (conn, RSE_SOCKERR, __FILE__, __LINE__,
102 errno, strerror (errno));
103 if (evutil_make_socket_nonblocking (conn->fd) < 0)
105 evutil_closesocket (conn->fd);
107 return rs_err_conn_push_fl (conn, RSE_SOCKERR, __FILE__, __LINE__,
108 "evutil_make_socket_nonblocking: %d (%s)",
109 errno, strerror (errno));
115 event_init_bufferevent (struct rs_connection *conn, struct rs_peer *peer)
120 if (conn->realm->type == RS_CONN_TYPE_TCP)
122 conn->bev = bufferevent_socket_new (conn->evb, conn->fd, 0);
124 return rs_err_conn_push_fl (conn, RSE_EVENT, __FILE__, __LINE__,
125 "bufferevent_socket_new");
127 #if defined (RS_ENABLE_TLS)
128 else if (conn->realm->type == RS_CONN_TYPE_TLS)
130 if (rs_tls_init (conn))
132 /* Would be convenient to pass BEV_OPT_CLOSE_ON_FREE but things
133 seem to break when be_openssl_ctrl() (in libevent) calls
134 SSL_set_bio() after BIO_new_socket() with flag=1. */
136 bufferevent_openssl_socket_new (conn->evb, conn->fd, conn->tls_ssl,
137 BUFFEREVENT_SSL_CONNECTING, 0);
139 return rs_err_conn_push_fl (conn, RSE_EVENT, __FILE__, __LINE__,
140 "bufferevent_openssl_socket_new");
142 #endif /* RS_ENABLE_TLS */
145 return rs_err_conn_push_fl (conn, RSE_INTERNAL, __FILE__, __LINE__,
146 "%s: unknown connection type: %d", __func__,
154 event_do_connect (struct rs_connection *conn)
160 assert (conn->active_peer);
161 p = conn->active_peer;
165 char host[80], serv[80];
167 getnameinfo (p->addr->ai_addr,
169 host, sizeof(host), serv, sizeof(serv),
170 0 /* NI_NUMERICHOST|NI_NUMERICSERV*/);
171 rs_debug (("%s: connecting to %s:%s\n", __func__, host, serv));
175 if (p->conn->bev) /* TCP */
177 conn_activate_timeout (conn); /* Connect timeout. */
178 err = bufferevent_socket_connect (p->conn->bev, p->addr->ai_addr,
179 p->addr->ai_addrlen);
181 rs_err_conn_push_fl (p->conn, RSE_EVENT, __FILE__, __LINE__,
182 "bufferevent_socket_connect: %s",
183 evutil_gai_strerror (err));
185 p->conn->is_connecting = 1;
189 err = connect (p->conn->fd, p->addr->ai_addr, p->addr->ai_addrlen);
192 sockerr = evutil_socket_geterror (p->conn->fd);
193 rs_debug (("%s: %d: connect: %d (%s)\n", __func__, p->conn->fd,
194 sockerr, evutil_socket_error_to_string (sockerr)));
195 rs_err_conn_push_fl (p->conn, RSE_SOCKERR, __FILE__, __LINE__,
196 "%d: connect: %d (%s)", p->conn->fd, sockerr,
197 evutil_socket_error_to_string (sockerr));
203 event_loopbreak (struct rs_connection *conn)
205 int err = event_base_loopbreak (conn->evb);
207 rs_err_conn_push_fl (conn, RSE_EVENT, __FILE__, __LINE__,
208 "event_base_loopbreak: %s",
209 evutil_gai_strerror (err));
215 event_on_disconnect (struct rs_connection *conn)
217 conn->is_connecting = 0;
218 conn->is_connected = 0;
219 rs_debug (("%s: %p disconnected\n", __func__, conn->active_peer));
220 if (conn->callbacks.disconnected_cb)
221 conn->callbacks.disconnected_cb (conn->user_data);
225 event_on_connect (struct rs_connection *conn, struct rs_packet *pkt)
227 assert (!conn->is_connecting);
228 conn->is_connected = 1;
229 rs_debug (("%s: %p connected\n", __func__, conn->active_peer));
231 if (conn->callbacks.connected_cb)
232 conn->callbacks.connected_cb (conn->user_data);
235 packet_do_send (pkt);
239 event_init_eventbase (struct rs_connection *conn)
246 event_enable_debug_mode ();
248 event_set_log_callback (_evlog_cb);
249 conn->evb = event_base_new ();
251 return rs_err_conn_push_fl (conn, RSE_EVENT, __FILE__, __LINE__,