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/* $OpenBSD: ofpclient.c,v 1.3 2016/11/18 22:15:52 tb Exp $ */
/*
* Copyright (c) 2016 Reyk Floeter <reyk@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/queue.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <sys/tree.h>
#include <sys/un.h>
#include <net/if.h>
#include <net/ofp.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <netdb.h>
#include <errno.h>
#include <event.h>
#include <fcntl.h>
#include <string.h>
#include <ctype.h>
#include <poll.h>
#include <err.h>
#include <pwd.h>
#include <vis.h>
#include "switchd.h"
#include "parser.h"
void
ofpclient(struct parse_result *res, struct passwd *pw)
{
struct switch_connection con;
struct switchd sc;
struct ofp_header oh;
int s;
memset(&sc, 0, sizeof(sc));
sc.sc_tap = -1;
memset(&con, 0, sizeof(con));
memcpy(&con.con_peer, &res->uri.swa_addr, sizeof(res->uri.swa_addr));
con.con_sc = ≻
/*
* Connect and send the request
*/
switch (res->uri.swa_type) {
case SWITCH_CONN_TCP:
if ((s = socket(res->uri.swa_addr.ss_family, SOCK_STREAM,
IPPROTO_TCP)) == -1)
fatal("socket");
/* Use the default port if no port has been specified */
if (socket_getport(&con.con_peer) == 0)
(void)socket_setport(&con.con_peer, SWITCHD_CTLR_PORT);
if (connect(s, (struct sockaddr *)&con.con_peer,
con.con_peer.ss_len) == -1)
fatal("connect");
con.con_fd = s;
break;
default:
fatalx("connect type not supported");
}
/* Drop privileges */
if (pledge("stdio", NULL) == -1)
err(1, "pledge");
log_verbose(0);
oh.oh_version = OFP_V_1_3;
oh.oh_type = OFP_T_HELLO;
oh.oh_length = 0;
oh.oh_xid = 0;
ofp13_hello(&sc, &con, &oh, NULL);
log_verbose(res->quiet ? 0 : 2);
switch (res->action) {
case DUMP_DESC:
ofp13_desc(&sc, &con);
break;
case DUMP_FEATURES:
ofp13_featuresrequest(&sc, &con);
break;
case DUMP_FLOWS:
ofp13_flow_stats(&sc, &con, OFP_PORT_ANY, OFP_GROUP_ID_ANY,
OFP_TABLE_ID_ALL);
break;
case DUMP_TABLES:
ofp13_table_features(&sc, &con, 0);
break;
default:
break;
}
}
/*
* stubs for ofp*.c
*/
void
ofrelay_write(struct switch_connection *con, struct ibuf *buf)
{
struct msgbuf msgbuf;
uint8_t rbuf[0xffff];
ssize_t rlen;
struct ofp_header *oh;
struct ibuf *ibuf;
struct pollfd pfd[1];
int nfds;
msgbuf_init(&msgbuf);
msgbuf.fd = con->con_fd;
ibuf_close(&msgbuf, buf);
ibuf_write(&msgbuf);
/* Wait for response */
pfd[0].fd = con->con_fd;
pfd[0].events = POLLIN;
nfds = poll(pfd, 1, 3 * 1000);
if (nfds == -1 || (pfd[0].revents & (POLLERR|POLLHUP|POLLNVAL)))
fatal("poll error");
if (nfds == 0)
fatal("time out");
if ((rlen = read(con->con_fd, rbuf, sizeof(rbuf))) == -1)
fatal("read");
if (rlen == 0)
fatal("connection closed");
if ((ibuf = ibuf_new(rbuf, rlen)) == NULL)
fatal("ibuf_new");
if ((oh = ibuf_seek(ibuf, 0, sizeof(*oh))) == NULL)
fatal("short header");
if (ofp13_validate(con->con_sc,
&con->con_peer, &con->con_local, oh, ibuf) != 0)
fatal("ofp13_validate");
ibuf_free(ibuf);
}
struct switch_control *
switch_add(struct switch_connection *con)
{
static struct switch_control sw;
con->con_switch = &sw;
return (&sw);
}
struct macaddr *
switch_learn(struct switchd *sc, struct switch_control *sw,
uint8_t *ea, uint32_t port)
{
return (NULL);
}
struct macaddr *
switch_cached(struct switch_control *sw, uint8_t *ea)
{
return (NULL);
}
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