init_users(in_addr_t my_ip, int netbits)
#endif
{
int i;
int skip = 0;
char newip[16];
int maxusers;
in_addr_t netmask = 0;
struct in_addr net;
struct in_addr ipstart;
#ifdef LINUX
struct in6_addr next_v6;
memcpy(&next_v6, &my_net6, sizeof(my_net6));
ipv6_addr_add(&next_v6, 1);
#endif
for (i = 0; i < netbits; i++) {
netmask = (netmask << 1) | 1;
}
netmask <<= (32 - netbits);
net.s_addr = htonl(netmask);
ipstart.s_addr = my_ip & net.s_addr;
maxusers = (1 << (32-netbits)) - 3; /* 3: Net addr, broadcast addr, iodined addr */
usercount = MIN(maxusers, USERS);
users = calloc(usercount, sizeof(struct user));
for (i = 0; i < usercount; i++) {
in_addr_t ip;
users[i].id = i;
snprintf(newip, sizeof(newip), "0.0.0.%d", i + skip + 1);
ip = ipstart.s_addr + inet_addr(newip);
if (ip == my_ip && skip == 0) {
/* This IP was taken by iodined */
skip++;
snprintf(newip, sizeof(newip), "0.0.0.%d", i + skip + 1);
ip = ipstart.s_addr + inet_addr(newip);
}
users[i].tun_ip = ip;
net.s_addr = ip;
users[i].disabled = 0;
users[i].active = 0;
#ifdef LINUX
ipv6_addr_add(&next_v6, 1);
memcpy(&(users[i].tun_ip6), &next_v6, sizeof(struct in6_addr));
#endif
/* Rest is reset on login ('V' packet) */
}
return usercount;
}
void gre_resume(struct tunnel_gre_s *gre, s32 num)
{
s32 i;
s32 use_mtu;
s32 use_csum;
s32 use_seq;
s32 use_key;
for (i = 0; i < num; i++)
{
use_mtu = 0;
use_csum = 0;
use_seq = 0;
use_key = 0;
if (!strcmp(gre[i].mtu_disc, "on"))
{
use_mtu = 1;
}
if (!strcmp(gre[i].c_sum, "on"))
{
use_csum = 1;
}
if (!strcmp(gre[i].seq_syn, "on"))
{
use_seq = 1;
}
if (strcmp(gre[i].tunn_key, "empty"))
{
use_key = atoi(gre[i].tunn_key);
}
if (ip_gre_add(gre[i].tunn_name, gre[i].src_ip, gre[i].des_ip, use_mtu,
use_csum, use_seq, use_key))
{
continue;
}
if (strncmp(gre[i].tunn_ip4, "off", 3) && ipv4_addr_add(gre[i].tunn_name, gre[i].tunn_ip4))
{
continue;
}
if (strncmp(gre[i].tunn_ip6, "off", 3) && ipv6_addr_add(gre[i].tunn_name, gre[i].tunn_ip6))
{
continue;
}
if (if_dev_up(gre[i].tunn_name))
{
continue;
}
}
return;
}