1 /* Copyright 2011 NORDUnet A/S. All rights reserved.
2 See the file COPYING for licensing information. */
4 #if defined HAVE_CONFIG_H
12 #include <event2/event.h>
13 #include <event2/bufferevent.h>
14 #if defined (RS_ENABLE_TLS)
15 #include <event2/bufferevent_ssl.h>
16 #include <openssl/err.h>
18 #include <radsec/radsec.h>
19 #include <radsec/radsec-impl.h>
22 #if defined (RS_ENABLE_TLS)
31 extern int _event_debug_mode_on;
35 _evlog_cb (int severity, const char *msg)
40 case _EVENT_LOG_DEBUG:
41 #if !defined (DEBUG_LEVENT)
59 fprintf (stderr, "libevent: [%s] %s\n", sevstr, msg); /* FIXME: stderr? */
63 event_conn_timeout_cb (int fd, short event, void *data)
65 struct rs_connection *conn = NULL;
68 conn = (struct rs_connection *) data;
70 if (event & EV_TIMEOUT)
72 rs_debug (("%s: connection timeout on %p (fd %d) connecting to %p\n",
73 __func__, conn, conn->fd, conn->active_peer));
74 conn->is_connecting = 0;
75 rs_err_conn_push_fl (conn, RSE_TIMEOUT_CONN, __FILE__, __LINE__, NULL);
76 event_loopbreak (conn);
81 event_retransmit_timeout_cb (int fd, short event, void *data)
83 struct rs_connection *conn = NULL;
86 conn = (struct rs_connection *) data;
88 if (event & EV_TIMEOUT)
90 rs_debug (("%s: retransmission timeout on %p (fd %d) sending to %p\n",
91 __func__, conn, conn->fd, conn->active_peer));
92 rs_err_conn_push_fl (conn, RSE_TIMEOUT_IO, __FILE__, __LINE__, NULL);
93 event_loopbreak (conn);
98 event_init_socket (struct rs_connection *conn, struct rs_peer *p)
104 conn->fd = socket (p->addr->ai_family, p->addr->ai_socktype,
105 p->addr->ai_protocol);
107 return rs_err_conn_push_fl (conn, RSE_SOCKERR, __FILE__, __LINE__,
109 errno, strerror (errno));
110 if (evutil_make_socket_nonblocking (conn->fd) < 0)
112 evutil_closesocket (conn->fd);
114 return rs_err_conn_push_fl (conn, RSE_SOCKERR, __FILE__, __LINE__,
115 "evutil_make_socket_nonblocking: %d (%s)",
116 errno, strerror (errno));
122 event_init_bufferevent (struct rs_connection *conn, struct rs_peer *peer)
127 if (conn->realm->type == RS_CONN_TYPE_TCP)
129 conn->bev = bufferevent_socket_new (conn->evb, conn->fd, 0);
131 return rs_err_conn_push_fl (conn, RSE_EVENT, __FILE__, __LINE__,
132 "bufferevent_socket_new");
134 #if defined (RS_ENABLE_TLS)
135 else if (conn->realm->type == RS_CONN_TYPE_TLS)
137 if (rs_tls_init (conn))
139 /* Would be convenient to pass BEV_OPT_CLOSE_ON_FREE but things
140 seem to break when be_openssl_ctrl() (in libevent) calls
141 SSL_set_bio() after BIO_new_socket() with flag=1. */
143 bufferevent_openssl_socket_new (conn->evb, conn->fd, conn->tls_ssl,
144 BUFFEREVENT_SSL_CONNECTING, 0);
146 return rs_err_conn_push_fl (conn, RSE_EVENT, __FILE__, __LINE__,
147 "bufferevent_openssl_socket_new");
149 #endif /* RS_ENABLE_TLS */
152 return rs_err_conn_push_fl (conn, RSE_INTERNAL, __FILE__, __LINE__,
153 "%s: unknown connection type: %d", __func__,
161 event_do_connect (struct rs_connection *conn)
167 assert (conn->active_peer);
168 p = conn->active_peer;
172 char host[80], serv[80];
174 getnameinfo (p->addr->ai_addr,
176 host, sizeof(host), serv, sizeof(serv),
177 0 /* NI_NUMERICHOST|NI_NUMERICSERV*/);
178 rs_debug (("%s: connecting to %s:%s\n", __func__, host, serv));
182 if (p->conn->bev) /* TCP */
184 conn_activate_timeout (conn); /* Connect timeout. */
185 err = bufferevent_socket_connect (p->conn->bev, p->addr->ai_addr,
186 p->addr->ai_addrlen);
188 rs_err_conn_push_fl (p->conn, RSE_EVENT, __FILE__, __LINE__,
189 "bufferevent_socket_connect: %s",
190 evutil_gai_strerror (err));
192 p->conn->is_connecting = 1;
196 err = connect (p->conn->fd, p->addr->ai_addr, p->addr->ai_addrlen);
199 sockerr = evutil_socket_geterror (p->conn->fd);
200 rs_debug (("%s: %d: connect: %d (%s)\n", __func__, p->conn->fd,
201 sockerr, evutil_socket_error_to_string (sockerr)));
202 rs_err_conn_push_fl (p->conn, RSE_SOCKERR, __FILE__, __LINE__,
203 "%d: connect: %d (%s)", p->conn->fd, sockerr,
204 evutil_socket_error_to_string (sockerr));
210 event_loopbreak (struct rs_connection *conn)
212 int err = event_base_loopbreak (conn->evb);
214 rs_err_conn_push_fl (conn, RSE_EVENT, __FILE__, __LINE__,
215 "event_base_loopbreak: %s",
216 evutil_gai_strerror (err));
222 event_on_disconnect (struct rs_connection *conn)
224 conn->is_connecting = 0;
225 conn->is_connected = 0;
226 rs_debug (("%s: %p disconnected\n", __func__, conn->active_peer));
227 if (conn->callbacks.disconnected_cb)
228 conn->callbacks.disconnected_cb (conn->user_data);
232 event_on_connect (struct rs_connection *conn, struct rs_packet *pkt)
234 assert (!conn->is_connecting);
235 conn->is_connected = 1;
236 rs_debug (("%s: %p connected\n", __func__, conn->active_peer));
238 if (conn->callbacks.connected_cb)
239 conn->callbacks.connected_cb (conn->user_data);
242 packet_do_send (pkt);
246 event_init_eventbase (struct rs_connection *conn)
253 if (!_event_debug_mode_on)
254 event_enable_debug_mode ();
256 event_set_log_callback (_evlog_cb);
257 conn->evb = event_base_new ();
259 return rs_err_conn_push_fl (conn, RSE_EVENT, __FILE__, __LINE__,