- n = bufferevent_read (pkt->conn->bev, pkt->hdr, RS_HEADER_LEN);
- if (n == RS_HEADER_LEN)
- {
- pkt->hdr_read_flag = 1;
- pkt->rpkt->data_len = (pkt->hdr[2] << 8) + pkt->hdr[3];
- if (pkt->rpkt->data_len < 20 /* || len > 4096 */)
- abort (); /* FIXME: Read and discard packet. */
- pkt->rpkt->data = rs_malloc (pkt->conn->ctx, pkt->rpkt->data_len);
- if (!pkt->rpkt->data)
- {
- rs_err_conn_push_fl (pkt->conn, RSE_NOMEM, __FILE__, __LINE__,
- NULL);
- abort (); /* FIXME: Read and discard packet. */
- }
- memcpy (pkt->rpkt->data, pkt->hdr, RS_HEADER_LEN);
- bufferevent_setwatermark (pkt->conn->bev, EV_READ,
- pkt->rpkt->data_len - RS_HEADER_LEN, 0);
-#if defined (DEBUG)
- fprintf (stderr, "%s: packet header read, total pkt len=%d\n",
- __func__, pkt->rpkt->data_len);
-#endif
- }
- else if (n < 0)
- return; /* Buffer frozen. */
- else
- assert (!"short header");
- }
-
-#if defined (DEBUG)
- printf ("%s: trying to read %d octets of packet data\n", __func__, pkt->rpkt->data_len - RS_HEADER_LEN);
-#endif
- n = bufferevent_read (pkt->conn->bev, pkt->rpkt->data + RS_HEADER_LEN, pkt->rpkt->data_len - RS_HEADER_LEN);
-#if defined (DEBUG)
- printf ("%s: read %d octets of packet data\n", __func__, n);
-#endif
- if (n == pkt->rpkt->data_len - RS_HEADER_LEN)
- {
- bufferevent_disable (pkt->conn->bev, EV_READ);
- pkt->hdr_read_flag = 0;
- memset (pkt->hdr, 0, sizeof(*pkt->hdr));
-#if defined (DEBUG)
- fprintf (stderr, "%s: complete packet read\n", __func__);
-#endif
- if (!rad_packet_ok (pkt->rpkt, 0) != 0)
- return;
- assert (pkt->original);
-
- /* Verify header and message authenticator. */
- if (rad_verify (pkt->rpkt, pkt->original->rpkt,
- pkt->conn->active_peer->secret))
- {
- rs_err_conn_push_fl (pkt->conn, RSE_FR, __FILE__, __LINE__,
- "rad_verify: %s", fr_strerror ());
- return;
- }
-
- /* Decode and decrypt. */
- if (rad_decode (pkt->rpkt, pkt->original->rpkt,
- pkt->conn->active_peer->secret))
- {
- rs_err_conn_push_fl (pkt->conn, RSE_FR, __FILE__, __LINE__,
- "rad_decode: %s", fr_strerror ());
- return;
- }
-
- if (pkt->conn->callbacks.received_cb)
- pkt->conn->callbacks.received_cb (pkt, pkt->conn->user_data);
-
- if (event_base_loopbreak (pkt->conn->evb) < 0)
- abort (); /* FIXME */
- }
- else if (n < 0)
- return; /* Buffer frozen. */
- else
- assert (!"short packet");
-}
-
-static void
-_evlog_cb (int severity, const char *msg)
-{
- const char *sevstr;
- switch (severity)
- {
- case _EVENT_LOG_DEBUG:
-#if !defined (DEBUG_LEVENT)
- return;
-#endif
- sevstr = "debug";
- break;
- case _EVENT_LOG_MSG:
- sevstr = "msg";
- break;
- case _EVENT_LOG_WARN:
- sevstr = "warn";
- break;
- case _EVENT_LOG_ERR:
- sevstr = "err";
- break;
- default:
- sevstr = "???";
- break;
- }
- fprintf (stderr, "libevent: [%s] %s\n", sevstr, msg);
-}
-
-static int
-_init_evb (struct rs_connection *conn)
-{
- if (!conn->evb)
- {
-#if defined (DEBUG)
- event_enable_debug_mode ();
-#endif
- event_set_log_callback (_evlog_cb);
- conn->evb = event_base_new ();
- if (!conn->evb)
- return rs_err_conn_push_fl (conn, RSE_EVENT, __FILE__, __LINE__,
- "event_base_new");
- }
- return RSE_OK;
-}