mirror of
https://github.com/moparisthebest/socat
synced 2024-11-10 11:05:04 -05:00
106 lines
2.7 KiB
C
106 lines
2.7 KiB
C
/* source: xio-interface.c */
|
|
/* Copyright Gerhard Rieger 2010 */
|
|
/* Published under the GNU General Public License V.2, see file COPYING */
|
|
|
|
/* this file contains the source for opening addresses of raw socket type */
|
|
|
|
#include "xiosysincludes.h"
|
|
|
|
#if WITH_INTERFACE
|
|
|
|
#include "xioopen.h"
|
|
#include "xio-socket.h"
|
|
|
|
#include "xio-interface.h"
|
|
|
|
|
|
static
|
|
int xioopen_interface(int argc, const char *argv[], struct opt *opts,
|
|
int xioflags, xiofile_t *xfd, unsigned groups, int pf,
|
|
int dummy2, int dummy3);
|
|
|
|
const struct addrdesc xioaddr_interface= { "interface", 3, xioopen_interface, GROUP_FD|GROUP_SOCKET, PF_PACKET, 0, 0 HELP(":<interface>") };
|
|
|
|
|
|
static
|
|
int _xioopen_interface(const char *ifname,
|
|
struct opt *opts, int xioflags, xiofile_t *xxfd,
|
|
unsigned groups, int pf) {
|
|
xiosingle_t *xfd = &xxfd->stream;
|
|
union sockaddr_union us = {{0}};
|
|
socklen_t uslen;
|
|
int socktype = SOCK_RAW;
|
|
unsigned int ifidx;
|
|
bool needbind = false;
|
|
char *bindstring = NULL;
|
|
struct sockaddr_ll sall = { 0 };
|
|
|
|
if (ifindex(ifname, &ifidx, -1) < 0) {
|
|
Error1("unknown interface \"%s\"", ifname);
|
|
ifidx = 0; /* desparate attempt to continue */
|
|
}
|
|
|
|
xfd->howtoend = END_SHUTDOWN;
|
|
retropt_int(opts, OPT_SO_TYPE, &socktype);
|
|
|
|
retropt_socket_pf(opts, &pf);
|
|
|
|
/* ...res_opts[] */
|
|
if (applyopts_single(xfd, opts, PH_INIT) < 0) return -1;
|
|
applyopts(-1, opts, PH_INIT);
|
|
|
|
xfd->salen = sizeof(xfd->peersa);
|
|
if (pf == PF_UNSPEC) {
|
|
pf = xfd->peersa.soa.sa_family;
|
|
}
|
|
|
|
xfd->dtype = XIODATA_RECVFROM_SKIPIP;
|
|
|
|
if (retropt_string(opts, OPT_BIND, &bindstring)) {
|
|
needbind = true;
|
|
}
|
|
/*!!! parse by ':' */
|
|
us.ll.sll_family = pf;
|
|
us.ll.sll_protocol = htons(ETH_P_ALL);
|
|
us.ll.sll_ifindex = ifidx;
|
|
uslen = sizeof(sall);
|
|
needbind = true;
|
|
xfd->peersa = (union sockaddr_union)us;
|
|
|
|
return
|
|
_xioopen_dgram_sendto(needbind?&us:NULL, uslen,
|
|
opts, xioflags, xfd, groups, pf, socktype, 0);
|
|
}
|
|
|
|
static
|
|
int xioopen_interface(int argc, const char *argv[], struct opt *opts,
|
|
int xioflags, xiofile_t *xxfd, unsigned groups,
|
|
int pf, int dummy2, int dummy3) {
|
|
xiosingle_t *xfd = &xxfd->stream;
|
|
int result;
|
|
|
|
if (argc != 2) {
|
|
Error2("%s: wrong number of parameters (%d instead of 1)",
|
|
argv[0], argc-1);
|
|
return STAT_NORETRY;
|
|
}
|
|
|
|
if ((result =
|
|
_xioopen_interface(argv[1], opts, xioflags, xxfd, groups, pf))
|
|
!= STAT_OK) {
|
|
return result;
|
|
}
|
|
|
|
xfd->dtype = XIOREAD_RECV|XIOWRITE_SENDTO;
|
|
if (pf == PF_INET) {
|
|
xfd->dtype |= XIOREAD_RECV_SKIPIP;
|
|
}
|
|
|
|
xfd->para.socket.la.soa.sa_family = xfd->peersa.soa.sa_family;
|
|
|
|
_xio_openlate(xfd, opts);
|
|
return STAT_OK;
|
|
}
|
|
|
|
#endif /* WITH_INTERFACE */
|