-/* See the file COPYING for licensing information. */
+/* Copyright 2010, 2011 NORDUnet A/S. All rights reserved.
+ See the file COPYING for licensing information. */
#if defined HAVE_CONFIG_H
#include <config.h>
#include <string.h>
#include <assert.h>
-#include <debug.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_close (struct rs_connection **connp)
+{
+ int r;
+ assert (connp);
+ assert (*connp);
+ r = rs_conn_destroy (*connp);
+ if (!r)
+ *connp = NULL;
+ return r;
+}
+
+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
rs_conn_create (struct rs_context *ctx, struct rs_connection **conn,
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
conn->realm->type = type;
}
-
-struct rs_error * /* FIXME: Return int as all the others? */
-_rs_resolv (struct evutil_addrinfo **addr, rs_conn_type_t type,
- const char *hostname, const char *service)
-{
- int err;
- struct evutil_addrinfo hints, *res = NULL;
-
- memset (&hints, 0, sizeof(struct evutil_addrinfo));
- hints.ai_family = AF_INET; /* IPv4 only. TODO: Set AF_UNSPEC. */
- hints.ai_flags = AI_ADDRCONFIG;
- switch (type)
- {
- case RS_CONN_TYPE_NONE:
- return _rs_err_create (RSE_INVALID_CONN, __FILE__, __LINE__, NULL, NULL);
- case RS_CONN_TYPE_TCP:
- /* Fall through. */
- case RS_CONN_TYPE_TLS:
- hints.ai_socktype = SOCK_STREAM;
- hints.ai_protocol = IPPROTO_TCP;
- break;
- case RS_CONN_TYPE_UDP:
- /* Fall through. */
- case RS_CONN_TYPE_DTLS:
- hints.ai_socktype = SOCK_DGRAM;
- hints.ai_protocol = IPPROTO_UDP;
- break;
- default:
- return _rs_err_create (RSE_INVALID_CONN, __FILE__, __LINE__, NULL, NULL);
- }
- err = evutil_getaddrinfo (hostname, service, &hints, &res);
- if (err)
- return _rs_err_create (RSE_BADADDR, __FILE__, __LINE__,
- "%s:%s: bad host name or service name (%s)",
- hostname, service, evutil_gai_strerror(err));
- *addr = res; /* Simply use first result. */
- return NULL;
-}
-
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__,
- "%s: NYI", __func__);
+ return rs_err_conn_push_fl (conn, RSE_NOSYS, __FILE__, __LINE__, NULL);
}
int
rs_conn_destroy (struct rs_connection *conn)
{
- struct rs_peer *p;
int err = 0;
assert (conn);
- if (conn->is_connected)
- {
- err = rs_conn_disconnect (conn);
- if (err)
- return err;
- }
-
/* NOTE: conn->realm is owned by context. */
+ /* NOTE: conn->peers is owned by context. */
- for (p = conn->peers; p; p = p->next)
- {
- if (p->addr)
- evutil_freeaddrinfo (p->addr);
- if (p->secret)
- rs_free (conn->ctx, p->secret);
- }
-
+ if (conn->is_connected)
+ err = rs_conn_disconnect (conn);
if (conn->tev)
event_free (conn->tev);
+ if (conn->bev)
+ bufferevent_free (conn->bev);
if (conn->evb)
event_base_free (conn->evb);
- return 0;
+ /* TODO: free tls_ctx */
+ /* TODO: free tls_ssl */
+
+ 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__,
- "%s: NYI", __func__);
+ 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);
- conn->user_dispatch_flag = 1;
memcpy (&conn->callbacks, cb, sizeof (conn->callbacks));
}
rs_conn_del_callbacks (struct rs_connection *conn)
{
assert (conn);
- conn->user_dispatch_flag = 0;
memset (&conn->callbacks, 0, sizeof (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__,
- "%s: NYI", __func__);
+ 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__,
- "%s: NYI", __func__);
+ return rs_err_conn_push_fl (conn, RSE_NOSYS, __FILE__, __LINE__, NULL);
}
int rs_conn_fd (struct rs_connection *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_flag;
+ if (pkt->conn->bev)
+ bufferevent_disable (pkt->conn->bev, EV_WRITE|EV_READ);
+ else
+ event_del (pkt->conn->rev);
+}
+
+/* Special function used in libradsec blocking dispatching mode,
+ i.e. with socket set to block on read/write and with no libradsec
+ callbacks registered.
+
+ For any other use of libradsec, a the received_cb callback should
+ be registered in the callbacks member of struct rs_connection.
+
+ On successful reception of a RADIUS message it will be verified
+ against REQ_MSG, if !NULL.
+
+ If PKT_OUT is !NULL it will upon return point at a pointer to a
+ struct rs_packet containing the message.
+
+ If anything goes wrong or if the read times out (TODO: explain),
+ PKT_OUT will not be changed and one or more errors are pushed on
+ the connection (available through rs_err_conn_pop()). */
+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)); /* Dispatching mode only. */
+
+ if (rs_packet_create (conn, &pkt))
+ return -1;
+ pkt->conn = conn;
+
+ assert (conn->evb);
+ assert (conn->bev);
+ assert (conn->active_peer);
+ assert (conn->fd >= 0);
+
+ conn->callbacks.received_cb = _rcb;
+ conn->user_data = pkt;
+ pkt->flags &= ~rs_packet_received_flag;
+
+ if (conn->bev)
+ {
+ 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
+ {
+ 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));
+ }
+
+
+ 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_flag) == 0
+ || (req_msg
+ && packet_verify_response (pkt->conn, pkt, req_msg) != RSE_OK))
+ {
+ assert (rs_err_conn_peek_code (pkt->conn));
+ return rs_err_conn_peek_code (conn);
+ }
+
+ if (pkt_out)
+ *pkt_out = pkt;
+ return RSE_OK;
+}
+
+void
+rs_conn_set_timeout(struct rs_connection *conn, struct timeval *tv)
+{
+ assert (conn);
+ assert (tv);
+ conn->timeout = *tv;
+}
+
+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;
+}
projects / radsecproxy.git / blobdiff