1 /* See the file COPYING for licensing information. */
5 #include <freeradius/libradius.h>
6 #include <event2/event.h>
7 #include <event2/bufferevent.h>
8 #include <radsec/libradsec.h>
9 #include <radsec/libradsec-impl.h>
15 _packet_create (struct rs_connection *conn, struct rs_packet **pkt_out)
24 return rs_conn_err_push (conn, RSE_NOMEM, __func__);
27 p = (struct rs_packet *) malloc (sizeof (struct rs_packet));
31 return rs_conn_err_push (conn, RSE_NOMEM, __func__);
33 memset (p, 0, sizeof (struct rs_packet));
42 rs_packet_create_acc_request (struct rs_connection *conn,
43 struct rs_packet **pkt_out,
44 const char *user_name, const char *user_pw)
46 struct rs_packet *pkt;
49 if (_packet_create (conn, pkt_out))
52 pkt->rpkt->code = PW_AUTHENTICATION_REQUEST;
54 if (rs_attr_create (conn, &attr, "User-Name", user_name))
56 rs_packet_add_attr (pkt, attr);
58 if (rs_attr_create (conn, &attr, "User-Password", user_pw))
60 /* FIXME: need this too? rad_pwencode(user_pw, &pwlen, SECRET, reqauth) */
61 rs_packet_add_attr (pkt, attr);
67 _event_cb (struct bufferevent *bev, short events, void *ctx)
69 struct rs_packet *pkt = (struct rs_packet *) ctx;
70 struct rs_connection *conn;
75 assert (pkt->conn->active_peer);
77 p = conn->active_peer;
80 if (events & BEV_EVENT_CONNECTED)
84 fprintf (stderr, "%s: connected\n", __func__);
86 rad_encode (pkt->rpkt, NULL, pkt->conn->active_peer->secret);
89 fprintf (stderr, "%s: about to send this to %s:\n", __func__, "<fixme>");
92 if (bufferevent_write(bev, pkt->rpkt->data, pkt->rpkt->data_len))
93 rs_conn_err_push_fl (pkt->conn, RSE_EVENT, __FILE__, __LINE__,
95 /* Packet will be freed in write callback. */
97 else if (events & BEV_EVENT_ERROR)
98 rs_conn_err_push_fl (pkt->conn, RSE_CONNERR, __FILE__, __LINE__, NULL);
102 rs_packet_destroy(struct rs_packet *pkt)
104 rad_free (&pkt->rpkt);
105 rs_free (pkt->conn->ctx, pkt);
109 _write_cb (struct bufferevent *bev, void *ctx)
111 struct rs_packet *pkt = (struct rs_packet *) ctx;
116 fprintf (stderr, "%s: packet written, breaking event loop\n", __func__);
118 if (event_base_loopbreak (pkt->conn->evb) < 0)
119 abort (); /* FIXME */
120 rs_packet_destroy (pkt);
124 _read_cb (struct bufferevent *bev, void *ctx)
126 struct rs_packet *pkt = (struct rs_packet *) ctx;
131 if (!pkt->hdr_read_flag)
133 n = bufferevent_read (pkt->conn->bev, pkt->hdr, RS_HEADER_LEN);
134 if (n == RS_HEADER_LEN)
136 pkt->hdr_read_flag = 1;
137 pkt->rpkt->data_len = (pkt->hdr[2] << 8) + pkt->hdr[3];
138 if (pkt->rpkt->data_len < 20 /* || len > 4096 */)
139 abort (); /* TODO: Read and discard. */
140 pkt->rpkt->data = rs_malloc (pkt->conn->ctx, pkt->rpkt->data_len);
141 if (!pkt->rpkt->data)
143 rs_conn_err_push_fl (pkt->conn, RSE_NOMEM, __FILE__, __LINE__,
145 abort (); /* FIXME: recovering takes reading of packet */
147 memcpy (pkt->rpkt->data, pkt->hdr, RS_HEADER_LEN);
148 bufferevent_setwatermark (pkt->conn->bev, EV_READ,
149 pkt->rpkt->data_len - RS_HEADER_LEN, 0);
151 fprintf (stderr, "%s: packet header read, total pkt len=%d\n",
152 __func__, pkt->rpkt->data_len);
156 return; /* Buffer frozen. */
158 assert (!"short header");
161 printf ("%s: trying to read %d octets of packet data\n", __func__, pkt->rpkt->data_len - RS_HEADER_LEN);
162 n = bufferevent_read (pkt->conn->bev, pkt->rpkt->data + RS_HEADER_LEN, pkt->rpkt->data_len - RS_HEADER_LEN);
163 printf ("%s: read %d octets of packet data\n", __func__, n);
164 if (n == pkt->rpkt->data_len - RS_HEADER_LEN)
166 bufferevent_disable (pkt->conn->bev, EV_READ);
167 pkt->hdr_read_flag = 0;
168 memset (pkt->hdr, 0, sizeof(*pkt->hdr));
170 fprintf (stderr, "%s: complete packet read\n", __func__);
172 rad_decode (pkt->rpkt, NULL, pkt->conn->active_peer->secret);
173 if (event_base_loopbreak (pkt->conn->evb) < 0)
174 abort (); /* FIXME */
177 return; /* Buffer frozen. */
179 assert (!"short packet");
183 _init_evb (struct rs_connection *conn)
188 event_enable_debug_mode ();
190 conn->evb = event_base_new ();
192 return rs_conn_err_push_fl (conn, RSE_EVENT, __FILE__, __LINE__,
199 _init_socket (struct rs_connection *conn, struct rs_peer *p)
204 p->s = socket (p->addr->ai_family, p->addr->ai_socktype,
205 p->addr->ai_protocol);
207 return rs_conn_err_push_fl (conn, RSE_SOME_ERROR, __FILE__, __LINE__,
213 static struct rs_peer *
214 _pick_peer (struct rs_connection *conn)
216 if (!conn->active_peer)
217 conn->active_peer = conn->peers;
218 return conn->active_peer;
222 _init_bev (struct rs_connection *conn, struct rs_peer *peer)
226 conn->bev = bufferevent_socket_new (conn->evb, peer->s, 0);
228 return rs_conn_err_push_fl (conn, RSE_EVENT, __FILE__, __LINE__,
229 "bufferevent_socket_new");
235 _do_connect (struct rs_peer *p)
237 if (bufferevent_socket_connect (p->conn->bev, p->addr->ai_addr,
238 p->addr->ai_addrlen) < 0)
239 rs_conn_err_push_fl (p->conn, RSE_EVENT, __FILE__, __LINE__,
240 "bufferevent_socket_connect");
242 p->is_connecting = 1;
246 _conn_open(struct rs_connection *conn, struct rs_packet *pkt)
250 if (_init_evb (conn))
253 p = _pick_peer (conn);
255 return rs_conn_err_push_fl (conn, RSE_NOPEER, __FILE__, __LINE__, NULL);
257 if (_init_socket (conn, p))
260 if (_init_bev (conn, p))
262 bufferevent_setcb (conn->bev, _read_cb, _write_cb, _event_cb, pkt);
264 if (!p->is_connected)
265 if (!p->is_connecting)
272 rs_packet_send (struct rs_packet *pkt, void *data)
274 struct rs_connection *conn;
280 if (_conn_open (conn, pkt))
284 assert (conn->active_peer);
285 assert (conn->active_peer->s >= 0);
287 event_base_dispatch (conn->evb);
290 fprintf (stderr, "%s: event loop done\n", __func__);
291 assert (event_base_got_break(conn->evb));
298 rs_conn_receive_packet (struct rs_connection *conn, struct rs_packet **pkt_out)
300 struct rs_packet *pkt;
304 if (_packet_create (conn, pkt_out))
309 if (_conn_open (conn, pkt))
313 assert (conn->active_peer);
314 assert (conn->active_peer->s >= 0);
316 bufferevent_setwatermark (conn->bev, EV_READ, RS_HEADER_LEN, 0);
317 bufferevent_enable (conn->bev, EV_READ);
318 event_base_dispatch (conn->evb);
320 fprintf (stderr, "%s: event loop done", __func__);
321 if (event_base_got_break(conn->evb))
323 fprintf (stderr, ", got this:\n");
324 rs_dump_packet (pkt);
327 fprintf (stderr, ", no reply\n");
334 rs_packet_add_attr(struct rs_packet *pkt, struct rs_attr *attr)
336 pairadd (&pkt->rpkt->vps, attr->vp);
340 struct radius_packet *
341 rs_packet_frpkt(struct rs_packet *pkt)