1#include <sys/socket.h>
2#include <netinet/in.h>
3#include <arpa/inet.h>
4
5in_addr_t inet_network(const char *p)
6{
7 return ntohl(inet_addr(p));
8}
9
10struct in_addr inet_makeaddr(in_addr_t n, in_addr_t h)
11{
12 if (n < 256) h |= n<<24;
13 else if (n < 65536) h |= n<<16;
14 else h |= n<<8;
15 return (struct in_addr){ h };
16}
17
18in_addr_t inet_lnaof(struct in_addr in)
19{
20 uint32_t h = in.s_addr;
21 if (h>>24 < 128) return h & 0xffffff;
22 if (h>>24 < 192) return h & 0xffff;
23 return h & 0xff;
24}
25
26in_addr_t inet_netof(struct in_addr in)
27{
28 uint32_t h = in.s_addr;
29 if (h>>24 < 128) return h >> 24;
30 if (h>>24 < 192) return h >> 16;
31 return h >> 8;
32}