-/* Copyright 2010, 2011 NORDUnet A/S. All rights reserved.
- See the file COPYING for licensing information. */
+/* Copyright 2010-2011 NORDUnet A/S. All rights reserved.
+ See LICENSE for licensing information. */
#if defined HAVE_CONFIG_H
#include <config.h>
#endif
-#include <time.h>
+#include <stdint.h>
+#include <stdlib.h>
#include <assert.h>
+#include <sys/time.h>
#include <event2/event.h>
#include <radsec/radsec.h>
#include <radsec/radsec-impl.h>
#include <radsec/request.h>
#include <radsec/request-impl.h>
+#include <radius/client.h>
+#include "debug.h"
+#include "conn.h"
+#include "tcp.h"
+#include "udp.h"
+
+/* RFC 5080 2.2.1. Retransmission Behavior. */
+#define IRT 2
+#define MRC 5
+#define MRT 16
+#define MRD 30
+#define RAND 100 /* Rand factor, milliseconds. */
int
rs_request_create (struct rs_connection *conn, struct rs_request **req_out)
}
void
-rs_request_add_reqpkt (struct rs_request *req, struct rs_packet *reqpkt)
+rs_request_add_reqpkt (struct rs_request *req, struct rs_packet *req_msg)
{
assert (req);
- req->req_msg = reqpkt;
+ req->req_msg = req_msg;
}
int
const char *user_name,
const char *user_pw)
{
- struct rs_request *req;
+ struct rs_request *req = NULL;
assert (req_out);
+
if (rs_request_create (conn, &req))
return -1;
if (rs_packet_create_authn_request (conn, &req->req_msg, user_name, user_pw))
return -1;
- *req_out = req;
+ if (req_out)
+ *req_out = req;
return RSE_OK;
}
rs_request_destroy (struct rs_request *request)
{
assert (request);
- rs_packet_destroy (request->req_msg);
- rs_packet_destroy (request->resp_msg);
- rs_free (request->conn->ctx, request);
-}
-
-#if 0
-static void
-_timer_cb (evutil_socket_t fd, short what, void *arg)
-
-{
-}
-#endif
-
-static void
-_rs_req_connected (void *user_data)
-{
- struct rs_request *request = (struct rs_request *) user_data;
- assert (request);
assert (request->conn);
- if (request->saved_cb.connected_cb)
- request->saved_cb.connected_cb (request->saved_user_data);
-}
+ assert (request->conn->ctx);
-static void
-_rs_req_disconnected (void *user_data)
-{
- struct rs_request *request = (struct rs_request *) user_data;
- assert (request);
- assert (request->conn);
- if (request->saved_cb.disconnected_cb)
- request->saved_cb.disconnected_cb (request->saved_user_data);
+ if (request->req_msg)
+ rs_packet_destroy (request->req_msg);
+ rs_free (request->conn->ctx, request);
}
static void
-_rs_req_packet_received (struct rs_packet *msg, void *user_data)
+_rand_rt (struct timeval *res, uint32_t rtprev, uint32_t factor)
{
- struct rs_request *request = (struct rs_request *) user_data;
- assert (request);
- assert (request->conn);
- if (request->saved_cb.received_cb)
- request->saved_cb.received_cb (msg, request->saved_user_data);
-}
-
-static void
-_rs_req_packet_sent (void *user_data)
-{
- struct rs_request *request = (struct rs_request *) user_data;
- assert (request);
- assert (request->conn);
- if (request->saved_cb.sent_cb)
- request->saved_cb.sent_cb (request->saved_user_data);
+ uint32_t ms = rtprev * (nr_rand () % factor);
+ res->tv_sec = rtprev + ms / 1000;
+ res->tv_usec = (ms % 1000) * 1000;
}
int
rs_request_send (struct rs_request *request, struct rs_packet **resp_msg)
{
- int err = 0;
+ int r = 0;
struct rs_connection *conn = NULL;
+ int count = 0;
+ struct timeval rt = {0,0};
+ struct timeval end = {0,0};
+ struct timeval now = {0,0};
+ struct timeval tmp_tv = {0,0};
+ const struct timeval mrt_tv = {MRT,0};
if (!request || !request->conn || !request->req_msg || !resp_msg)
return rs_err_conn_push_fl (conn, RSE_INVAL, __FILE__, __LINE__, NULL);
conn = request->conn;
+ assert (!conn_user_dispatch_p (conn)); /* This function is high level. */
+
+ gettimeofday (&end, NULL);
+ end.tv_sec += MRD;
+ _rand_rt (&rt, IRT, RAND);
+ while (1)
+ {
+ rs_conn_set_timeout (conn, &rt);
+
+ r = rs_packet_send (request->req_msg, NULL);
+ if (r == RSE_OK)
+ {
+ r = rs_conn_receive_packet (request->conn,
+ request->req_msg,
+ resp_msg);
+ if (r == RSE_OK)
+ break; /* Success. */
+ }
+ if (r != RSE_TIMEOUT_CONN && r != RSE_TIMEOUT_IO)
+ break; /* Error. */
+
+ /* Timing out reading or writing. Pop the timeout error from the
+ stack and continue the loop. */
+ rs_err_conn_pop (request->conn);
+
+ gettimeofday (&now, NULL);
+ if (++count > MRC || timercmp (&now, &end, >))
+ {
+ r = rs_err_conn_push_fl (request->conn, RSE_TIMEOUT,
+ __FILE__, __LINE__, NULL);
+ break; /* Timeout. */
+ }
+
+ /* rt = 2 * rt + rand_rt (rt, RAND); */
+ timeradd (&rt, &rt, &rt);
+ _rand_rt (&tmp_tv, IRT, RAND);
+ timeradd (&rt, &tmp_tv, &rt);
+ if (timercmp (&rt, &mrt_tv, >))
+ _rand_rt (&rt, MRT, RAND);
+ }
+
+ timerclear (&rt);
+ rs_conn_set_timeout (conn, &rt);
+
+ rs_debug (("%s: returning %d\n", __func__, r));
+ return r;
+}
- request->saved_user_data = conn->user_data;
- conn->user_data = request;
-
- request->saved_cb = conn->callbacks;
- conn->callbacks.connected_cb = _rs_req_connected;
- conn->callbacks.disconnected_cb = _rs_req_disconnected;
- conn->callbacks.received_cb = _rs_req_packet_received;
- conn->callbacks.sent_cb = _rs_req_packet_sent;
-
- err = rs_packet_send(request->req_msg, request);
- if (err)
- goto cleanup;
-
- err = rs_conn_receive_packet(request->conn, request->req_msg, resp_msg);
- if (err)
- goto cleanup;
-
-cleanup:
- conn->user_data = request->saved_user_data;
- conn->callbacks = request->saved_cb;
- return err;
+struct rs_packet *
+rs_request_get_reqmsg (const struct rs_request *request)
+{
+ assert (request);
+ return request->req_msg;
}