+++ /dev/null
-/* Copyright 2010-2013 NORDUnet A/S. All rights reserved.
- See LICENSE for licensing information. */
-
-#if defined HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <string.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <assert.h>
-#include <event2/event.h>
-#include <event2/bufferevent.h>
-#include <radsec/radsec.h>
-#include <radsec/radsec-impl.h>
-#include "debug.h"
-#include "conn.h"
-#include "event.h"
-#include "packet.h"
-#include "tcp.h"
-
-int
-conn_user_dispatch_p (const struct rs_connection *conn)
-{
- assert (conn);
-
- return (conn->callbacks.connected_cb ||
- conn->callbacks.disconnected_cb ||
- conn->callbacks.received_cb ||
- conn->callbacks.sent_cb);
-}
-
-
-int
-conn_activate_timeout (struct rs_connection *conn)
-{
- assert (conn);
- assert (conn->tev);
- assert (conn->evb);
- if (conn->timeout.tv_sec || conn->timeout.tv_usec)
- {
- rs_debug (("%s: activating timer: %d.%d\n", __func__,
- conn->timeout.tv_sec, conn->timeout.tv_usec));
- if (evtimer_add (conn->tev, &conn->timeout))
- return rs_err_conn_push_fl (conn, RSE_EVENT, __FILE__, __LINE__,
- "evtimer_add: %d", errno);
- }
- return RSE_OK;
-}
-
-int
-conn_type_tls (const struct rs_connection *conn)
-{
- return conn->realm->type == RS_CONN_TYPE_TLS
- || conn->realm->type == RS_CONN_TYPE_DTLS;
-}
-
-int
-conn_cred_psk (const struct rs_connection *conn)
-{
- return conn->realm->transport_cred &&
- conn->realm->transport_cred->type == RS_CRED_TLS_PSK;
-}
-
-
-/* Public functions. */
-int
-rs_conn_create (struct rs_context *ctx,
- struct rs_connection **conn,
- const char *config)
-{
- struct rs_connection *c;
-
- c = (struct rs_connection *) malloc (sizeof(struct rs_connection));
- if (!c)
- return rs_err_ctx_push_fl (ctx, RSE_NOMEM, __FILE__, __LINE__, NULL);
-
- memset (c, 0, sizeof(struct rs_connection));
- c->ctx = ctx;
- c->fd = -1;
- if (config)
- {
- struct rs_realm *r = rs_conf_find_realm (ctx, config);
- if (r)
- {
- struct rs_peer *p;
-
- c->realm = r;
- c->peers = r->peers; /* FIXME: Copy instead? */
- for (p = c->peers; p; p = p->next)
- p->conn = c;
- c->timeout.tv_sec = r->timeout;
- c->tryagain = r->retries;
- }
- else
- {
- c->realm = rs_malloc (ctx, sizeof (struct rs_realm));
- if (!c->realm)
- return rs_err_ctx_push_fl (ctx, RSE_NOMEM, __FILE__, __LINE__,
- NULL);
- memset (c->realm, 0, sizeof (struct rs_realm));
- }
- }
-
- if (conn)
- *conn = c;
- return RSE_OK;
-}
-
-void
-rs_conn_set_type (struct rs_connection *conn, rs_conn_type_t type)
-{
- assert (conn);
- assert (conn->realm);
- conn->realm->type = type;
-}
-
-int
-rs_conn_add_listener (struct rs_connection *conn,
- rs_conn_type_t type,
- const char *hostname,
- int port)
-{
- return rs_err_conn_push_fl (conn, RSE_NOSYS, __FILE__, __LINE__, NULL);
-}
-
-
-int
-rs_conn_disconnect (struct rs_connection *conn)
-{
- int err = 0;
-
- assert (conn);
-
- if (conn->is_connected)
- event_on_disconnect (conn);
-
- if (conn->bev)
- {
- bufferevent_free (conn->bev);
- conn->bev = NULL;
- }
- if (conn->rev)
- {
- event_free (conn->rev);
- conn->rev = NULL;
- }
- if (conn->wev)
- {
- event_free (conn->wev);
- conn->wev = NULL;
- }
-
- err = evutil_closesocket (conn->fd);
- conn->fd = -1;
- return err;
-}
-
-int
-rs_conn_destroy (struct rs_connection *conn)
-{
- int err = 0;
-
- assert (conn);
-
- /* NOTE: conn->realm is owned by context. */
- /* NOTE: conn->peers is owned by context. */
-
- if (conn->is_connected)
- err = rs_conn_disconnect (conn);
-
-#if defined (RS_ENABLE_TLS)
- if (conn->tls_ssl) /* FIXME: Free SSL strucxt in rs_conn_disconnect? */
- SSL_free (conn->tls_ssl);
- if (conn->tls_ctx)
- SSL_CTX_free (conn->tls_ctx);
-#endif
-
- if (conn->tev)
- event_free (conn->tev);
- if (conn->bev)
- bufferevent_free (conn->bev);
- if (conn->rev)
- event_free (conn->rev);
- if (conn->wev)
- event_free (conn->wev);
- if (conn->evb)
- event_base_free (conn->evb);
-
- rs_free (conn->ctx, conn);
-
- return err;
-}
-
-int
-rs_conn_set_eventbase (struct rs_connection *conn, struct event_base *eb)
-{
- return rs_err_conn_push_fl (conn, RSE_NOSYS, __FILE__, __LINE__, NULL);
-}
-
-void
-rs_conn_set_callbacks (struct rs_connection *conn, struct rs_conn_callbacks *cb)
-{
- assert (conn);
- memcpy (&conn->callbacks, cb, sizeof (conn->callbacks));
-}
-
-void
-rs_conn_del_callbacks (struct rs_connection *conn)
-{
- assert (conn);
- memset (&conn->callbacks, 0, sizeof (conn->callbacks));
-}
-
-struct rs_conn_callbacks *
-rs_conn_get_callbacks(struct rs_connection *conn)
-{
- assert (conn);
- return &conn->callbacks;
-}
-
-int
-rs_conn_select_peer (struct rs_connection *conn, const char *name)
-{
- return rs_err_conn_push_fl (conn, RSE_NOSYS, __FILE__, __LINE__, NULL);
-}
-
-int
-rs_conn_get_current_peer (struct rs_connection *conn,
- const char *name,
- size_t buflen)
-{
- return rs_err_conn_push_fl (conn, RSE_NOSYS, __FILE__, __LINE__, NULL);
-}
-
-int rs_conn_fd (struct rs_connection *conn)
-{
- assert (conn);
- assert (conn->active_peer);
- return conn->fd;
-}
-
-static void
-_rcb (struct rs_packet *packet, void *user_data)
-{
- struct rs_packet *pkt = (struct rs_packet *) user_data;
- assert (pkt);
- assert (pkt->conn);
-
- pkt->flags |= RS_PACKET_RECEIVED;
- if (pkt->conn->bev)
- bufferevent_disable (pkt->conn->bev, EV_WRITE|EV_READ);
- else
- event_del (pkt->conn->rev);
-}
-
-int
-rs_conn_receive_packet (struct rs_connection *conn,
- struct rs_packet *req_msg,
- struct rs_packet **pkt_out)
-{
- int err = 0;
- struct rs_packet *pkt = NULL;
-
- assert (conn);
- assert (conn->realm);
- assert (!conn_user_dispatch_p (conn)); /* Blocking mode only. */
-
- if (rs_packet_create (conn, &pkt))
- return -1;
-
- assert (conn->evb);
- assert (conn->fd >= 0);
-
- conn->callbacks.received_cb = _rcb;
- conn->user_data = pkt;
- pkt->flags &= ~RS_PACKET_RECEIVED;
-
- if (conn->bev) /* TCP. */
- {
- bufferevent_setwatermark (conn->bev, EV_READ, RS_HEADER_LEN, 0);
- bufferevent_setcb (conn->bev, tcp_read_cb, NULL, tcp_event_cb, pkt);
- bufferevent_enable (conn->bev, EV_READ);
- }
- else /* UDP. */
- {
- /* Put fresh packet in user_data for the callback and enable the
- read event. */
- event_assign (conn->rev, conn->evb, event_get_fd (conn->rev),
- EV_READ, event_get_callback (conn->rev), pkt);
- err = event_add (conn->rev, NULL);
- if (err < 0)
- return rs_err_conn_push_fl (pkt->conn, RSE_EVENT, __FILE__, __LINE__,
- "event_add: %s",
- evutil_gai_strerror (err));
-
- /* Activate retransmission timer. */
- conn_activate_timeout (pkt->conn);
- }
-
- rs_debug (("%s: entering event loop\n", __func__));
- err = event_base_dispatch (conn->evb);
- conn->callbacks.received_cb = NULL;
- if (err < 0)
- return rs_err_conn_push_fl (pkt->conn, RSE_EVENT, __FILE__, __LINE__,
- "event_base_dispatch: %s",
- evutil_gai_strerror (err));
- rs_debug (("%s: event loop done\n", __func__));
-
- if ((pkt->flags & RS_PACKET_RECEIVED) != 0)
- {
- /* If the caller passed a request, check the response. */
- if (req_msg)
- err = packet_verify_response (pkt->conn, pkt, req_msg);
-
- /* If the response was OK and the caller wants it, hand it
- over, else free it. */
- if (err == RSE_OK && pkt_out)
- *pkt_out = pkt;
- else
- rs_packet_destroy (pkt);
- }
- else
- err = rs_err_conn_peek_code (pkt->conn);
-
- return err;
-}
-
-void
-rs_conn_set_timeout(struct rs_connection *conn, struct timeval *tv)
-{
- assert (conn);
- assert (tv);
- conn->timeout = *tv;
-}
projects / libradsec.git / blobdiff