- conn = pkt->conn;
- p = conn->active_peer;
-
- conn->is_connecting = 0;
- if (events & BEV_EVENT_CONNECTED)
- {
- _on_connect (conn, pkt);
- }
- else if (events & BEV_EVENT_EOF)
- {
- _on_disconnect (conn);
- }
- else if (events & BEV_EVENT_TIMEOUT)
- {
- rs_debug (("%s: %p times out on %s\n", __func__, p,
- (events & BEV_EVENT_READING) ? "read" : "write"));
- rs_err_conn_push_fl (pkt->conn, RSE_TIMEOUT_IO, __FILE__, __LINE__, NULL);
- }
- else if (events & BEV_EVENT_ERROR)
- {
- sockerr = evutil_socket_geterror (conn->active_peer->fd);
- if (sockerr == 0) /* FIXME: True that errno == 0 means closed? */
- {
- _on_disconnect (conn);
- }
- else
- {
- rs_debug (("%s: %d: %d (%s)\n", __func__, conn->fd, sockerr,
- evutil_socket_error_to_string (sockerr)));
- rs_err_conn_push_fl (pkt->conn, RSE_SOCKERR, __FILE__, __LINE__,
- "%d: %d (%s)", conn->fd, sockerr,
- evutil_socket_error_to_string (sockerr));
- }
-#if defined (RS_ENABLE_TLS)
- if (conn->tls_ssl) /* FIXME: correct check? */
- {
- for (tlserr = bufferevent_get_openssl_error (conn->bev);
- tlserr;
- tlserr = bufferevent_get_openssl_error (conn->bev))
- {
- rs_debug (("%s: openssl error: %s\n", __func__,
- ERR_error_string (tlserr, NULL)));
- rs_err_conn_push_fl (pkt->conn, RSE_SSLERR, __FILE__, __LINE__,
- ERR_error_string (tlserr, NULL));
- }
- }
-#endif /* RS_ENABLE_TLS */
- _loopbreak (conn);
- }
-
-#if defined (DEBUG)
- if (events & BEV_EVENT_ERROR && events != BEV_EVENT_ERROR)
- rs_debug (("%s: BEV_EVENT_ERROR and more: 0x%x\n", __func__, events));
-#endif
-}
-
-static void
-_write_cb (struct bufferevent *bev, void *ctx)
-{
- struct rs_packet *pkt = (struct rs_packet *) ctx;
-
- assert (pkt);
- assert (pkt->conn);
-
- if (pkt->conn->callbacks.sent_cb)
- pkt->conn->callbacks.sent_cb (pkt->conn->user_data);
-}
-
-/* Read one RADIUS packet header. Return !0 on error. A return value
- of 0 means that we need more data. */
-static int
-_read_header (struct rs_packet *pkt)
-{
- size_t n = 0;
-
- 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 || pkt->rpkt->data_len > 4096)
- {
- _close_conn (&pkt->conn);
- return rs_err_conn_push (pkt->conn, RSE_INVALID_PKT,
- "invalid packet length: %d",
- pkt->rpkt->data_len);
- }
- pkt->rpkt->data = rs_malloc (pkt->conn->ctx, pkt->rpkt->data_len);
- if (!pkt->rpkt->data)
- {
- _close_conn (&pkt->conn);
- return rs_err_conn_push_fl (pkt->conn, RSE_NOMEM, __FILE__, __LINE__,
- NULL);
- }
- memcpy (pkt->rpkt->data, pkt->hdr, RS_HEADER_LEN);
- bufferevent_setwatermark (pkt->conn->bev, EV_READ,
- pkt->rpkt->data_len - RS_HEADER_LEN, 0);
- rs_debug (("%s: packet header read, total pkt len=%d\n",
- __func__, pkt->rpkt->data_len));
- }
- else if (n < 0)
- {
- rs_debug (("%s: buffer frozen while reading header\n", __func__));
- }
- else /* Error: libevent gave us less than the low watermark. */
- {
- _close_conn (&pkt->conn);
- return rs_err_conn_push_fl (pkt->conn, RSE_INTERNAL, __FILE__, __LINE__,
- "got %d octets reading header", n);
- }
-
- return 0;
-}
-
-static int
-_read_packet (struct rs_packet *pkt)
-{
- size_t n = 0;
-
- rs_debug (("%s: trying to read %d octets of packet data\n", __func__,
- pkt->rpkt->data_len - RS_HEADER_LEN));
-
- n = bufferevent_read (pkt->conn->bev,
- pkt->rpkt->data + RS_HEADER_LEN,
- pkt->rpkt->data_len - RS_HEADER_LEN);
-
- rs_debug (("%s: read %ld octets of packet data\n", __func__, n));
-
- if (n == pkt->rpkt->data_len - RS_HEADER_LEN)
- {
- bufferevent_disable (pkt->conn->bev, EV_READ);
- rs_debug (("%s: complete packet read\n", __func__));
- pkt->hdr_read_flag = 0;
- memset (pkt->hdr, 0, sizeof(*pkt->hdr));
-
- /* Checks done by rad_packet_ok:
- - lenghts (FIXME: checks really ok for tcp?)
- - invalid code field
- - attribute lengths >= 2
- - attribute sizes adding up correctly */
- if (!rad_packet_ok (pkt->rpkt, 0) != 0)
- {
- _close_conn (&pkt->conn);
- return rs_err_conn_push_fl (pkt->conn, RSE_FR, __FILE__, __LINE__,
- "invalid packet: %s", fr_strerror ());
- }
-
- /* TODO: Verify that reception of an unsolicited response packet
- results in connection being closed. */
-
- /* If we have a request to match this response against, verify
- and decode the response. */
- if (pkt->original)
- {
- /* Verify header and message authenticator. */
- if (rad_verify (pkt->rpkt, pkt->original->rpkt,
- pkt->conn->active_peer->secret))
- {
- _close_conn (&pkt->conn);
- return rs_err_conn_push_fl (pkt->conn, RSE_FR, __FILE__, __LINE__,
- "rad_verify: %s", fr_strerror ());
- }
-
- /* Decode and decrypt. */
- if (rad_decode (pkt->rpkt, pkt->original->rpkt,
- pkt->conn->active_peer->secret))
- {
- _close_conn (&pkt->conn);
- return rs_err_conn_push_fl (pkt->conn, RSE_FR, __FILE__, __LINE__,
- "rad_decode: %s", fr_strerror ());
- }
- }
-
-#if defined (DEBUG)
- /* Find out what happens if there's data left in the buffer. */
- {
- size_t rest = 0;
- rest = evbuffer_get_length (bufferevent_get_input (pkt->conn->bev));
- if (rest)
- rs_debug (("%s: returning with %d octets left in buffer\n", __func__,
- rest));
- }
-#endif
-
- /* Hand over message to user, changes ownership of pkt. Don't
- touch it afterwards -- it might have been freed. */
- if (pkt->conn->callbacks.received_cb)
- pkt->conn->callbacks.received_cb (pkt, pkt->conn->user_data);
- }
- else if (n < 0) /* Buffer frozen. */
- rs_debug (("%s: buffer frozen when reading packet\n", __func__));
- else /* Short packet. */
- rs_debug (("%s: waiting for another %d octets\n", __func__,
- pkt->rpkt->data_len - RS_HEADER_LEN - n));
-
- return 0;
-}
-
-/* Read callback for TCP.
-
- Read exactly one RADIUS message from BEV and store it in struct
- rs_packet passed in CTX (hereby called 'pkt').
-
- Verify the received packet against pkt->original, if !NULL.
-
- Inform upper layer about successful reception of valid RADIUS
- message by invoking conn->callbacks.recevied_cb(), if !NULL. */
-static void
-_read_cb (struct bufferevent *bev, void *user_data)
-{
- struct rs_packet *pkt = (struct rs_packet *) user_data;
-
- assert (pkt);
- assert (pkt->conn);