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#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <netinet/in.h>
#include <linux/if.h>
#include <linux/if_ether.h> /* for ETH_ALEN in if_pppox.h */
#include <linux/if_pppox.h>
#include <stdlib.h>
#include "config.h"
#include "net.h"
#include "sanitise.h"
//TODO: Split out each case into separate function.
void pppox_gen_sockaddr(struct sockaddr **addr, socklen_t *addrlen)
{
struct sockaddr_pppox *pppox;
struct sockaddr_pppol2tp *pppol2tp;
unsigned int proto;
unsigned int i;
proto = rand() % 3;
switch (proto) {
case PX_PROTO_OE:
pppox = malloc(sizeof(struct sockaddr_pppox));
if (pppox == NULL)
return;
pppox->sa_family = PF_PPPOX;
pppox->sa_protocol = proto;
pppox->sa_addr.pppoe.sid = rand();
for (i = 0; i < ETH_ALEN; i++)
pppox->sa_addr.pppoe.remote[i] = rand();
for (i = 0; i < IFNAMSIZ; i++)
pppox->sa_addr.pppoe.dev[i] = rand();
#ifdef USE_PPPOX_PPTP
pppox->sa_addr.pptp.call_id = rand();
pppox->sa_addr.pptp.sin_addr.s_addr = random_ipv4_address();
#endif
*addr = (struct sockaddr *) pppox;
*addrlen = sizeof(struct sockaddr_pppox);
break;
case PX_PROTO_OL2TP:
switch (rand() % 4) {
case 0: /* PPPoL2TP */
pppol2tp = malloc(sizeof(struct sockaddr_pppol2tp));
if (pppol2tp == NULL)
return;
pppol2tp->sa_family = PF_PPPOX;
pppol2tp->sa_protocol = proto;
pppol2tp->pppol2tp.pid = get_pid();
pppol2tp->pppol2tp.fd = get_random_fd();
pppol2tp->pppol2tp.addr.sin_addr.s_addr = random_ipv4_address();
pppol2tp->pppol2tp.s_tunnel = rand();
pppol2tp->pppol2tp.s_session = rand();
pppol2tp->pppol2tp.d_tunnel = rand();
pppol2tp->pppol2tp.d_session = rand();
*addr = (struct sockaddr *) pppol2tp;
*addrlen = sizeof(struct sockaddr_pppol2tp);
break;
case 1: /* PPPoL2TPin6*/
#ifdef USE_PPPOL2TPIN6
{
struct sockaddr_pppol2tpin6 *pppol2tpin6;
pppol2tpin6 = malloc(sizeof(struct sockaddr_pppol2tpin6));
if (pppol2tpin6 == NULL)
return;
pppol2tpin6->sa_family = PF_PPPOX;
pppol2tpin6->sa_protocol = proto;
pppol2tpin6->pppol2tp.pid = get_pid();
pppol2tpin6->pppol2tp.fd = get_random_fd();
pppol2tpin6->pppol2tp.s_tunnel = rand();
pppol2tpin6->pppol2tp.s_session = rand();
pppol2tpin6->pppol2tp.d_tunnel = rand();
pppol2tpin6->pppol2tp.d_session = rand();
pppol2tpin6->pppol2tp.addr.sin6_family = AF_INET6;
pppol2tpin6->pppol2tp.addr.sin6_port = rand();
pppol2tpin6->pppol2tp.addr.sin6_flowinfo = rand();
pppol2tpin6->pppol2tp.addr.sin6_addr.s6_addr32[0] = 0;
pppol2tpin6->pppol2tp.addr.sin6_addr.s6_addr32[1] = 0;
pppol2tpin6->pppol2tp.addr.sin6_addr.s6_addr32[2] = 0;
pppol2tpin6->pppol2tp.addr.sin6_addr.s6_addr32[3] = htonl(1);
pppol2tpin6->pppol2tp.addr.sin6_scope_id = rand();
*addr = (struct sockaddr *) pppol2tpin6;
*addrlen = sizeof(struct sockaddr_pppol2tpin6);
}
#endif
break;
case 2: /* PPPoL2TPv3*/
#ifdef USE_PPPOL2TPV3
{
struct sockaddr_pppol2tpv3 *pppol2tpv3;
pppol2tpv3 = malloc(sizeof(struct sockaddr_pppol2tpv3));
if (pppol2tpv3 == NULL)
return;
pppol2tpv3->sa_family = PF_PPPOX;
pppol2tpv3->sa_protocol = proto;
pppol2tpv3->pppol2tp.pid = get_pid();
pppol2tpv3->pppol2tp.fd = get_random_fd();
pppol2tpv3->pppol2tp.addr.sin_addr.s_addr = random_ipv4_address();
pppol2tpv3->pppol2tp.s_tunnel = rand();
pppol2tpv3->pppol2tp.s_session = rand();
pppol2tpv3->pppol2tp.d_tunnel = rand();
pppol2tpv3->pppol2tp.d_session = rand();
*addr = (struct sockaddr *) pppol2tpv3;
*addrlen = sizeof(struct sockaddr_pppol2tpv3);
}
#endif
break;
case 3: /* PPPoL2TPv3in6 */
#ifdef USE_PPPOL2TPIN6
{
struct sockaddr_pppol2tpv3in6 *pppol2tpv3in6;
pppol2tpv3in6 = malloc(sizeof(struct sockaddr_pppol2tpv3in6));
if (pppol2tpv3in6 == NULL)
return;
pppol2tpv3in6->sa_family = PF_PPPOX;
pppol2tpv3in6->sa_protocol = proto;
pppol2tpv3in6->pppol2tp.pid = get_pid();
pppol2tpv3in6->pppol2tp.fd = get_random_fd();
pppol2tpv3in6->pppol2tp.s_tunnel = rand();
pppol2tpv3in6->pppol2tp.s_session = rand();
pppol2tpv3in6->pppol2tp.d_tunnel = rand();
pppol2tpv3in6->pppol2tp.d_session = rand();
pppol2tpv3in6->pppol2tp.addr.sin6_family = AF_INET6;
pppol2tpv3in6->pppol2tp.addr.sin6_port = rand();
pppol2tpv3in6->pppol2tp.addr.sin6_flowinfo = rand();
pppol2tpv3in6->pppol2tp.addr.sin6_addr.s6_addr32[0] = 0;
pppol2tpv3in6->pppol2tp.addr.sin6_addr.s6_addr32[1] = 0;
pppol2tpv3in6->pppol2tp.addr.sin6_addr.s6_addr32[2] = 0;
pppol2tpv3in6->pppol2tp.addr.sin6_addr.s6_addr32[3] = random_ipv4_address();
pppol2tpv3in6->pppol2tp.addr.sin6_scope_id = rand();
*addr = (struct sockaddr *) pppol2tpv3in6;
*addrlen = sizeof(struct sockaddr_pppol2tpv3in6);
}
#endif
break;
default:
break;
}
#ifdef USE_PPPOX_PPTP
case PX_PROTO_PPTP:
//FIXME: What do we do here?
break;
#endif
default:
break;
}
}
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