WIP -- connecting and sending a packet using libevent.

1 files changed, 76 insertions, 12 deletions

diff --git a/lib/packet.c b/lib/packet.c
index eefb5eb..652c495 100644
--- a/lib/packet.c
+++ b/lib/packet.c
@@ -1,6 +1,8 @@
 #include <string.h>
 #include <assert.h>
 #include <freeradius/libradius.h>
+#include <event2/event.h>
+#include <event2/bufferevent.h>
 #include "libradsec.h"
 #include "libradsec-impl.h"
 #if defined DEBUG
@@ -29,6 +31,7 @@ _packet_create (struct rs_connection *conn, struct rs_packet **pkt_out,
       return rs_conn_err_push (conn, RSE_NOMEM, __func__);
     }
   memset (p, 0, sizeof (struct rs_packet));
+  p->conn = conn;
   p->rpkt = rpkt;
 
   *pkt_out = p;
@@ -59,26 +62,87 @@ rs_packet_create_acc_request (struct rs_connection *conn,
   return RSE_OK;
 }
 
+static void
+_event_cb (struct bufferevent *bev, short events, void *ctx)
+{
+  struct rs_packet *pkt = (struct rs_packet *) ctx;
+
+  assert (pkt);
+  assert (pkt->conn);
+  if (events & BEV_EVENT_CONNECTED)
+    {
+#if defined (DEBUG)
+      fprintf (stderr, "%s: connected\n", __func__);
+#endif
+      rad_encode (pkt->rpkt, NULL, pkt->conn->active_peer->secret);
+#if defined (DEBUG)
+      fprintf (stderr, "%s: about to send this to %s:\n", __func__, "<fixme>");
+      rs_dump_packet (pkt);
+#endif
+      if (bufferevent_write(bev, pkt->rpkt->data, pkt->rpkt->data_len))
+	rs_conn_err_push_fl (pkt->conn, RSE_EVENT, __FILE__, __LINE__,
+			     "bufferevent_write");
+      /* Packet will be freed in write callback.  */
+    }
+  else if (events & BEV_EVENT_ERROR)
+    rs_conn_err_push_fl (pkt->conn, RSE_CONNERR, __FILE__, __LINE__, NULL);
+}
+
+void
+rs_packet_destroy(struct rs_packet *pkt)
+{
+  rad_free (&pkt->rpkt);
+  rs_free (pkt->conn->ctx, pkt);
+}
+
+static void
+_write_cb (struct bufferevent *bev, void *ctx)
+{
+  struct rs_packet *pkt = (struct rs_packet *) ctx;
+
+  assert (pkt);
+  assert (pkt->conn);
+#if defined (DEBUG)
+  fprintf (stderr, "%s: packet written, breaking event loop\n", __func__);
+#endif
+  if (event_base_loopbreak (pkt->conn->evb) < 0)
+    abort ();			/* FIXME */
+  rs_packet_destroy (pkt);
+}
+
 int
-rs_packet_send (struct rs_connection *conn, const struct rs_packet *pkt,
-		void *user_data)
+rs_packet_send (struct rs_connection *conn, struct rs_packet *pkt, void *data)
 {
+  struct bufferevent *bev;
+  struct rs_peer *p;
+
   assert (pkt->rpkt);
 
-  if (!conn->active_peer)
+  if (rs_conn_open (conn))
+    return -1;
+  p = conn->active_peer;
+  assert (p);
+
+  assert (conn->active_peer->s >= 0);
+  bev = bufferevent_socket_new (conn->evb, conn->active_peer->s, 0);
+  if (!bev)
+    return rs_conn_err_push_fl (conn, RSE_EVENT, __FILE__, __LINE__,
+				"bufferevent_socket_new");
+  if (bufferevent_socket_connect (bev, p->addr->ai_addr, p->addr->ai_addrlen) < 0)
     {
-      int err = rs_conn_open (conn);
-      if (err)
-	return err;
-      }
-  rad_encode (pkt->rpkt, NULL, conn->active_peer->secret);
+      bufferevent_free (bev);
+      return rs_conn_err_push_fl (conn, RSE_EVENT, __FILE__, __LINE__,
+				  "bufferevent_socket_connect");
+    }
+
+  bufferevent_setcb (bev, NULL, _write_cb, _event_cb, pkt);
+  event_base_dispatch (conn->evb);
 #if defined (DEBUG)
-  fprintf (stderr, "%s: about to send this to %s:\n", __func__, "<fixme>");
-  rs_dump_packet (pkt);
+  fprintf (stderr, "%s: event loop done\n", __func__);
+  assert (event_base_got_break(conn->evb));
 #endif
 
-  return rs_conn_err_push_fl (conn, RSE_NOSYS, __FILE__, __LINE__,
-			      "%s: NYI", __func__);
+  return RSE_OK;
 }
 
 int rs_packet_receive(struct rs_connection *conn, struct rs_packet **pkt)