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#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
#include "debug.h"
#endif
int
_packet_create (struct rs_connection *conn, struct rs_packet **pkt_out,
int code)
{
struct rs_packet *p;
RADIUS_PACKET *rpkt;
*pkt_out = NULL;
rpkt = rad_alloc (1);
if (!rpkt)
return rs_conn_err_push (conn, RSE_NOMEM, __func__);
rpkt->id = -1;
rpkt->code = code;
p = (struct rs_packet *) malloc (sizeof (struct rs_packet));
if (!p)
{
rad_free (&rpkt);
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;
return RSE_OK;
}
int
rs_packet_create_acc_request (struct rs_connection *conn,
struct rs_packet **pkt_out,
const char *user_name, const char *user_pw)
{
struct rs_packet *pkt;
struct rs_attr *attr;
if (_packet_create (conn, pkt_out, PW_AUTHENTICATION_REQUEST))
return -1;
pkt = *pkt_out;
if (rs_attr_create (conn, &attr, "User-Name", user_name))
return -1;
rs_packet_add_attr (pkt, attr);
if (rs_attr_create (conn, &attr, "User-Password", user_pw))
return -1;
/* FIXME: need this too? rad_pwencode(user_pw, &pwlen, SECRET, reqauth) */
rs_packet_add_attr (pkt, attr);
return RSE_OK;
}
static void
_event_cb (struct bufferevent *bev, short events, void *ctx)
{
struct rs_packet *pkt = (struct rs_packet *) ctx;
struct rs_connection *conn;
struct rs_peer *p;
assert (pkt);
assert (pkt->conn);
assert (pkt->conn->active_peer);
conn = pkt->conn;
p = conn->active_peer;
p->is_connecting = 0;
if (events & BEV_EVENT_CONNECTED)
{
p->is_connected = 1;
#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);
}
static int
_init_evb (struct rs_connection *conn)
{
if (!conn->evb)
{
#if defined (DEBUG)
event_enable_debug_mode ();
#endif
conn->evb = event_base_new ();
if (!conn->evb)
return rs_conn_err_push_fl (conn, RSE_EVENT, __FILE__, __LINE__,
"event_base_new");
}
return RSE_OK;
}
static int
_init_socket (struct rs_connection *conn, struct rs_peer *p)
{
if (p->s < 0)
{
assert (p->addr);
p->s = socket (p->addr->ai_family, p->addr->ai_socktype,
p->addr->ai_protocol);
if (p->s < 0)
return rs_conn_err_push_fl (conn, RSE_SOME_ERROR, __FILE__, __LINE__,
strerror (errno));
}
return RSE_OK;
}
static struct rs_peer *
_pick_peer (struct rs_connection *conn)
{
if (!conn->active_peer)
conn->active_peer = conn->peers;
return conn->active_peer;
}
static int
_init_bev (struct rs_connection *conn, struct rs_peer *peer,
struct rs_packet *pkt)
{
if (!conn->bev)
{
conn->bev = bufferevent_socket_new (conn->evb, peer->s, 0);
if (!conn->bev)
return rs_conn_err_push_fl (conn, RSE_EVENT, __FILE__, __LINE__,
"bufferevent_socket_new");
bufferevent_setcb (conn->bev, NULL, _write_cb, _event_cb, pkt);
}
return RSE_OK;
}
static void
_do_connect (struct rs_peer *p)
{
if (bufferevent_socket_connect (p->conn->bev, p->addr->ai_addr,
p->addr->ai_addrlen) < 0)
rs_conn_err_push_fl (p->conn, RSE_EVENT, __FILE__, __LINE__,
"bufferevent_socket_connect");
else
p->is_connecting = 1;
}
static int
_conn_open(struct rs_connection *conn, struct rs_packet *pkt)
{
struct rs_peer *p;
if (_init_evb (conn))
return -1;
p = _pick_peer (conn);
if (!p)
return rs_conn_err_push_fl (conn, RSE_NOPEER, __FILE__, __LINE__, NULL);
if (_init_socket (conn, p))
return -1;
if (_init_bev (conn, p, pkt))
return -1;
if (!p->is_connected)
if (!p->is_connecting)
_do_connect (p);
return RSE_OK;
}
int
rs_packet_send (struct rs_connection *conn, struct rs_packet *pkt, void *data)
{
assert (conn);
assert (pkt->rpkt);
if (_conn_open (conn, pkt))
return -1;
assert (conn->evb);
assert (conn->bev);
assert (conn->active_peer);
assert (conn->active_peer->s >= 0);
event_base_dispatch (conn->evb);
#if defined (DEBUG)
fprintf (stderr, "%s: event loop done\n", __func__);
assert (event_base_got_break(conn->evb));
#endif
return RSE_OK;
}
int rs_packet_receive(struct rs_connection *conn, struct rs_packet **pkt)
{
//struct bufferevent *bev;
//skalleper;
//bufferevent_enable(bev, EV_READ);
return 0; /* FIXME */
}
void
rs_packet_add_attr(struct rs_packet *pkt, struct rs_attr *attr)
{
pairadd (&pkt->rpkt->vps, attr->vp);
attr->pkt = pkt;
}
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