int main(int c, char *z[])
{
errn1(packet_socket = socket(AF_PACKET, SOCK_RAW, rev2(ETH_P_ALL)), "open socket error");
struct sockaddr_ll sa_ll_b, sa_ll_s;
sa_ll_b.sll_family = sa_ll_s.sll_family = AF_PACKET;
sa_ll_b.sll_protocol = rev2(ETH_P_ALL), sa_ll_b.sll_ifindex = get_ifindex(packet_socket, net_if);
sa_ll_s.sll_halen = 0x06, sa_ll_s.sll_ifindex = get_ifindex(packet_socket, net_if), strcpy(sa_ll_s.sll_addr, "\xff\xff\xff\xff\xff\xff");
ok0(bind(packet_socket, (struct sockaddr*)&sa_ll_b, sizeof(struct sockaddr_ll)), "bind error");
char msg[1500+14];
int len = mk_arp_request_packet(msg, "\xcc\xcc\xcc\xcc\xcc\xcc", conv_ip("1.1.1.1"), conv_ip(z[1]));
semi a;
a.socket = packet_socket, a.len = len, a.msg = msg, a.sa_ll = &sa_ll_s;
pthread_t thread_info;
ok0(sem_init(&sem_info, 0, 0), "sem_init error");
ok0(pthread_create(&thread_info, NULL, send_eth_packet, (void*)&a), "pthread_create error");
f = set_promiscuous(packet_socket, net_if);
signal(SIGALRM, alarm_handler);
alarm(2);
while (1) {
ok0(sem_post(&sem_info), "sem_post error");
errn1(recvfrom(packet_socket, msg, 1514, 0, NULL, NULL), "recvfrom error");
if (*((short*)(msg+12)) == rev2(0x0806) && *((int*)(msg+28)) == conv_ip(z[1])) {
int i;
for (i=0;i<6;i++)
printf("%.2x%c", msg[22+i]&0xff, (i+1==6)?'\n':':');
if (f)
leave_promiscuous(packet_socket, net_if);
return 0;
}
}
}
static int nft_fib6_flowi_init(struct flowi6 *fl6, const struct nft_fib *priv,
const struct nft_pktinfo *pkt,
const struct net_device *dev)
{
const struct ipv6hdr *iph = ipv6_hdr(pkt->skb);
int lookup_flags = 0;
if (priv->flags & NFTA_FIB_F_DADDR) {
fl6->daddr = iph->daddr;
fl6->saddr = iph->saddr;
} else {
fl6->daddr = iph->saddr;
fl6->saddr = iph->daddr;
}
if (ipv6_addr_type(&fl6->daddr) & IPV6_ADDR_LINKLOCAL) {
lookup_flags |= RT6_LOOKUP_F_IFACE;
fl6->flowi6_oif = get_ifindex(dev ? dev : pkt->skb->dev);
}
if (ipv6_addr_type(&fl6->saddr) & IPV6_ADDR_UNICAST)
lookup_flags |= RT6_LOOKUP_F_HAS_SADDR;
if (priv->flags & NFTA_FIB_F_MARK)
fl6->flowi6_mark = pkt->skb->mark;
fl6->flowlabel = (*(__be32 *)iph) & IPV6_FLOWINFO_MASK;
return lookup_flags;
}
int raw_send(char *net_i, uint16_t ether_type, uint8_t *ptr, int len)
{
int fd;
int ifindex = 0;
uint8_t *buf = NULL;
char *device = NULL;
struct sockaddr_ll sll;
uint16_t n_ethtype;
char dmac[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
char smac[6];
raw_print("line: %d.\n", __LINE__);
if (net_i) {
device = net_i;
if (get_macaddr(device, smac)) {
memset(smac, 0x88, 6);
}
} else {
device = "lo";
memset(smac, 0x88, 6);
}
if ((ifindex = get_ifindex(device)) <= 0) {
return -1;
}
n_ethtype = htons(ether_type);
if ((fd = socket(AF_PACKET, SOCK_RAW, n_ethtype)) < 0) {
printf("create socket failed.\n");
return fd;
}
raw_print("line: %d.\n", __LINE__);
bzero(&sll, sizeof(sll));
sll.sll_family = AF_PACKET;
sll.sll_halen = 6;
//memcpy(sll.sll_addr, dmac, 6);
sll.sll_ifindex = ifindex;
sll.sll_protocol = n_ethtype;
bind(fd, (struct sockaddr *)&sll, sizeof(sll));
if (strlen((char *)ptr) == 0) {
ptr = (uint8_t *)"xuchunxiao";
len = strlen((char *)ptr);
}
buf = malloc(len + 14);
memcpy(buf, dmac, 6);
memcpy(buf + 6, smac, 6);
memcpy(buf + 12, &n_ethtype, 2);
memcpy(buf + 14, ptr, len);
raw_print("line: %d.\n", __LINE__);
if (sendto(fd, buf, len + 14, 0, (struct sockaddr *)&sll, sizeof(sll)) < 0) {
perror("sendto error.\n");
return -1;
}
raw_print("line: %d.\n", __LINE__);
free(buf);
close(fd);
return 0;
}
int main(int argc, char **argv)
{
const char *options="c:i:";
int opt_status=0;
int pppoe_count=1;
char *NIC_name;
while((opt_status=getopt(argc,argv,options))!=-1)
switch (opt_status) {
case 'c':
pppoe_count=atoi(optarg);
break;
case 'i':
NIC_name=optarg;
break;
default:
break;
}
//how many pppoe client to fork is determined!
struct Connection_info infos[pppoe_count];
memset(infos,0,sizeof(infos));
//shuttles for pppoe infomations
srand((unsigned int)getpid()); //ready for rand
set_promisc(NIC_name); //set the NIC to be used promisc mode
int count1;
for(count1=0;count1<pppoe_count;++count1) {
infos[count1].ifindex=get_ifindex(NIC_name); //get the ifindex of NIC
infos[count1].my_mac[0]=0x11;
infos[count1].my_mac[1]=0x22;
infos[count1].my_mac[2]=0x33;
int loop_count;
for(loop_count=3;loop_count<6;++loop_count) {
infos[count1].my_mac[loop_count]=(int)(rand()/(float)RAND_MAX*255);
}
//src mac of package done!
infos[count1].discovery_sock=socket(AF_PACKET,SOCK_RAW,htons(ETHER_TYPE_DISCOVERY));
if(infos[count1].discovery_sock<0) {
printf("error in creating discovery socket\n%s\n",strerror(errno));
exit(1);
}
//discovery socket's ready!
sendPADI(&infos[count1]);
recv_PADO(&infos[count1]);
sendPADR(&infos[count1]);
recv_PADS(&infos[count1]);
if(fork()==0) {
session(&infos[count1]);
}
printf("client %i is forked!\n",count1+1);
sleep(1);
}
return 0;
}
int raw_send_all(char *net_i, uint8_t *ptr, int len)
{
int fd;
int ifindex = 0;
char *device = NULL;
struct sockaddr_ll sll;
raw_print("line: %d.\n", __LINE__);
condition_if_false_ret(ptr != NULL, -1);
if (net_i) {
device = net_i;
} else {
device = "lo";
}
if ((ifindex = get_ifindex(device)) <= 0) {
return -1;
}
if ((fd = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_ALL))) < 0) {
printf("create socket failed.\n");
return fd;
}
raw_print("line: %d.\n", __LINE__);
bzero(&sll, sizeof(sll));
sll.sll_family = AF_PACKET;
sll.sll_halen = 6;
//memcpy(sll.sll_addr, dmac, 6);
sll.sll_ifindex = ifindex;
sll.sll_protocol = htons(ETH_P_ALL);
bind(fd, (struct sockaddr *)&sll, sizeof(sll));
if (strlen((char *)ptr) == 0) {
ptr = (uint8_t *)"xuchunxiao";
len = strlen((char *)ptr);
}
raw_print("line: %d.\n", __LINE__);
if (sendto(fd, ptr, len, 0, (struct sockaddr *)&sll, sizeof(sll)) < 0) {
perror("sendto error.\n");
return -1;
}
raw_print("line: %d.\n", __LINE__);
close(fd);
return 0;
}
/* Cache name to ifindex mapping */
unsigned int cache_ifindex(char *device, unsigned long now)
{
struct ifname_cache *ifc, **top;
unsigned int ifindex;
top = &hash_heads[hash_ifname(device)];
while ( (ifc = *top) != NULL) {
if (strncmp(device, ifc->name, IFNAMSIZ)) {
top = &ifc->next;
continue;
}
/* prune old entry to deal with hotplug */
if ((long)(now - ifc->tstamp) > IFCACHE_LIFETIME) {
*top = ifc->next;
free(ifc);
break;
}
return ifc->index;
}
ifindex = get_ifindex(device);
if (ifindex) {
ifc = malloc(sizeof(struct ifname_cache));
if (ifc) {
ifc->index = ifindex;
strncpy(ifc->name, device, IFNAMSIZ);
ifc->tstamp = now;
ifc->next = *top;
*top = ifc;
}
}
return ifindex;
}
/*
* parse a conn section
*/
static void load_conn(starter_conn_t *conn, kw_list_t *kw, starter_config_t *cfg)
{
char *conn_name = (conn->name == NULL)? "%default":conn->name;
for ( ; kw; kw = kw->next)
{
bool assigned = FALSE;
kw_token_t token = kw->entry->token;
if (token >= KW_LEFT_FIRST && token <= KW_LEFT_LAST)
{
kw_end(conn, &conn->left, token - KW_LEFT_FIRST + KW_END_FIRST
, kw, conn_name, cfg);
continue;
}
else if (token >= KW_RIGHT_FIRST && token <= KW_RIGHT_LAST)
{
kw_end(conn, &conn->right, token - KW_RIGHT_FIRST + KW_END_FIRST
, kw, conn_name, cfg);
continue;
}
if (token == KW_AUTO)
{
token = KW_CONN_SETUP;
}
else if (token == KW_ALSO)
{
if (cfg->parse_also)
{
also_t *also = malloc_thing(also_t);
also->name = clone_str(kw->value);
also->next = conn->also;
conn->also = also;
DBG(DBG_CONTROL,
DBG_log(" also=%s", kw->value)
)
}
continue;
}
if (token < KW_CONN_FIRST || token > KW_CONN_LAST)
{
plog("# unsupported keyword '%s' in conn '%s'"
, kw->entry->name, conn_name);
cfg->err++;
continue;
}
if (!assign_arg(token, KW_CONN_FIRST, kw, (char *)conn, &assigned))
{
plog(" bad argument value in conn '%s'", conn_name);
cfg->err++;
continue;
}
if (assigned)
continue;
switch (token)
{
case KW_TYPE:
conn->policy &= ~(POLICY_TUNNEL | POLICY_SHUNT_MASK);
if (streq(kw->value, "tunnel"))
{
conn->policy |= POLICY_TUNNEL;
}
else if (streq(kw->value, "beet"))
{
conn->policy |= POLICY_BEET;
}
else if (streq(kw->value, "transport_proxy"))
{
conn->policy |= POLICY_PROXY;
}
else if (streq(kw->value, "passthrough") || streq(kw->value, "pass"))
{
conn->policy |= POLICY_SHUNT_PASS;
}
else if (streq(kw->value, "drop"))
{
conn->policy |= POLICY_SHUNT_DROP;
}
else if (streq(kw->value, "reject"))
{
conn->policy |= POLICY_SHUNT_REJECT;
}
else if (strcmp(kw->value, "transport") != 0)
{
plog("# bad policy value: %s=%s", kw->entry->name, kw->value);
cfg->err++;
}
break;
case KW_PFS:
KW_POLICY_FLAG("yes", "no", POLICY_PFS)
break;
case KW_COMPRESS:
KW_POLICY_FLAG("yes", "no", POLICY_COMPRESS)
break;
case KW_PMTUDISC:
if (streq(kw->value, "no"))
{
conn->xfrm_flags |= XFRM_STATE_NOPMTUDISC;
}
break;
case KW_IPSECDEV:
conn->dev = get_ifindex(kw->value);
if (conn->dev < 0) {
cfg->err++;
}
break;
case KW_ECN:
if (streq(kw->value, "no"))
{
conn->xfrm_flags |= XFRM_STATE_NOECN;
}
break;
case KW_AUTH:
KW_POLICY_FLAG("ah", "esp", POLICY_AUTHENTICATE)
break;
case KW_AUTHBY:
conn->policy &= ~(POLICY_ID_AUTH_MASK | POLICY_ENCRYPT);
if (!(streq(kw->value, "never") || streq(kw->value, "eap")))
{
char *value = kw->value;
char *second = strchr(kw->value, '|');
if (second != NULL)
{
*second = '\0';
}
/* also handles the cases secret|rsasig and rsasig|secret */
for (;;)
{
if (streq(value, "rsa") || streq(value, "rsasig") ||
streq(value, "ecdsa") || streq(value, "ecdsasig") ||
streq(value, "pubkey"))
{
conn->policy |= POLICY_PUBKEY | POLICY_ENCRYPT;
}
else if (streq(value, "secret") || streq(value, "psk"))
{
conn->policy |= POLICY_PSK | POLICY_ENCRYPT;
}
else if (streq(value, "xauthrsasig"))
{
conn->policy |= POLICY_XAUTH_RSASIG | POLICY_ENCRYPT;
}
else if (streq(value, "xauthpsk"))
{
conn->policy |= POLICY_XAUTH_PSK | POLICY_ENCRYPT;
}
else
{
plog("# bad policy value: %s=%s", kw->entry->name, kw->value);
cfg->err++;
break;
}
if (second == NULL)
{
break;
}
value = second;
second = NULL; /* traverse the loop no more than twice */
}
}
break;
case KW_EAP:
{
char *sep;
/* check for vendor-type format */
sep = strchr(kw->value, '-');
if (sep)
{
*(sep++) = '\0';
conn->eap_type = atoi(kw->value);
conn->eap_vendor = atoi(sep);
if (conn->eap_type == 0 || conn->eap_vendor == 0)
{
plog("# invalid EAP type: %s=%s", kw->entry->name, kw->value);
cfg->err++;
}
break;
}
if (streq(kw->value, "aka"))
{
conn->eap_type = 23;
}
else if (streq(kw->value, "sim"))
{
conn->eap_type = 18;
}
else if (streq(kw->value, "md5"))
{
conn->eap_type = 4;
}
else if (streq(kw->value, "gtc"))
{
conn->eap_type = 6;
}
else if (streq(kw->value, "mschapv2"))
{
conn->eap_type = 26;
}
else if (streq(kw->value, "radius"))
{ /* pseudo-type */
conn->eap_type = 253;
}
else
{
conn->eap_type = atoi(kw->value);
if (conn->eap_type == 0)
{
plog("# unknown EAP type: %s=%s", kw->entry->name, kw->value);
cfg->err++;
}
}
break;
}
case KW_KEYINGTRIES:
if (streq(kw->value, "%forever"))
{
conn->sa_keying_tries = 0;
}
else
{
char *endptr;
conn->sa_keying_tries = strtoul(kw->value, &endptr, 10);
if (*endptr != '\0')
{
plog("# bad integer value: %s=%s", kw->entry->name, kw->value);
cfg->err++;
}
}
break;
case KW_REKEY:
KW_POLICY_FLAG("no", "yes", POLICY_DONT_REKEY)
break;
case KW_REAUTH:
KW_POLICY_FLAG("no", "yes", POLICY_DONT_REAUTH)
break;
case KW_MOBIKE:
KW_POLICY_FLAG("yes", "no", POLICY_MOBIKE)
break;
case KW_FORCEENCAPS:
KW_POLICY_FLAG("yes", "no", POLICY_FORCE_ENCAP)
break;
case KW_MODECONFIG:
KW_POLICY_FLAG("push", "pull", POLICY_MODECFG_PUSH)
break;
case KW_XAUTH:
KW_POLICY_FLAG("server", "client", POLICY_XAUTH_SERVER)
break;
default:
break;
}
}
void nft_fib4_eval(const struct nft_expr *expr, struct nft_regs *regs,
const struct nft_pktinfo *pkt)
{
const struct nft_fib *priv = nft_expr_priv(expr);
int noff = skb_network_offset(pkt->skb);
u32 *dest = ®s->data[priv->dreg];
struct iphdr *iph, _iph;
struct fib_result res;
struct flowi4 fl4 = {
.flowi4_scope = RT_SCOPE_UNIVERSE,
.flowi4_iif = LOOPBACK_IFINDEX,
};
const struct net_device *oif;
struct net_device *found;
#ifdef CONFIG_IP_ROUTE_MULTIPATH
int i;
#endif
/*
* Do not set flowi4_oif, it restricts results (for example, asking
* for oif 3 will get RTN_UNICAST result even if the daddr exits
* on another interface.
*
* Search results for the desired outinterface instead.
*/
if (priv->flags & NFTA_FIB_F_OIF)
oif = nft_out(pkt);
else if (priv->flags & NFTA_FIB_F_IIF)
oif = nft_in(pkt);
else
oif = NULL;
if (nft_hook(pkt) == NF_INET_PRE_ROUTING &&
nft_fib_is_loopback(pkt->skb, nft_in(pkt))) {
nft_fib_store_result(dest, priv, pkt,
nft_in(pkt)->ifindex);
return;
}
iph = skb_header_pointer(pkt->skb, noff, sizeof(_iph), &_iph);
if (!iph) {
regs->verdict.code = NFT_BREAK;
return;
}
if (ipv4_is_zeronet(iph->saddr)) {
if (ipv4_is_lbcast(iph->daddr) ||
ipv4_is_local_multicast(iph->daddr)) {
nft_fib_store_result(dest, priv, pkt,
get_ifindex(pkt->skb->dev));
return;
}
}
if (priv->flags & NFTA_FIB_F_MARK)
fl4.flowi4_mark = pkt->skb->mark;
fl4.flowi4_tos = iph->tos & DSCP_BITS;
if (priv->flags & NFTA_FIB_F_DADDR) {
fl4.daddr = iph->daddr;
fl4.saddr = get_saddr(iph->saddr);
} else {
fl4.daddr = iph->saddr;
fl4.saddr = get_saddr(iph->daddr);
}
*dest = 0;
if (fib_lookup(nft_net(pkt), &fl4, &res, FIB_LOOKUP_IGNORE_LINKSTATE))
return;
switch (res.type) {
case RTN_UNICAST:
break;
case RTN_LOCAL: /* Should not see RTN_LOCAL here */
return;
default:
break;
}
if (!oif) {
found = FIB_RES_DEV(res);
goto ok;
}
#ifdef CONFIG_IP_ROUTE_MULTIPATH
for (i = 0; i < res.fi->fib_nhs; i++) {
struct fib_nh *nh = &res.fi->fib_nh[i];
if (nh->nh_dev == oif) {
found = nh->nh_dev;
goto ok;
}
}
return;
#else
found = FIB_RES_DEV(res);
if (found != oif)
return;
#endif
ok:
switch (priv->result) {
case NFT_FIB_RESULT_OIF:
*dest = found->ifindex;
break;
case NFT_FIB_RESULT_OIFNAME:
strncpy((char *)dest, found->name, IFNAMSIZ);
break;
default:
WARN_ON_ONCE(1);
break;
}
}