Rich Felker | e40f48a | 2013-06-25 21:35:49 -0400 | [diff] [blame] | 1 | #include <sys/socket.h> |
| 2 | #include <netinet/in.h> |
| 3 | #include <arpa/inet.h> |
Rich Felker | e40f48a | 2013-06-25 21:35:49 -0400 | [diff] [blame] | 4 | |
Rich Felker | e40f48a | 2013-06-25 21:35:49 -0400 | [diff] [blame] | 5 | in_addr_t inet_network(const char *p) |
| 6 | { |
| 7 | return ntohl(inet_addr(p)); |
| 8 | } |
| 9 | |
Rich Felker | dbe221e | 2014-01-06 22:17:24 -0500 | [diff] [blame] | 10 | struct in_addr inet_makeaddr(in_addr_t n, in_addr_t h) |
Rich Felker | e40f48a | 2013-06-25 21:35:49 -0400 | [diff] [blame] | 11 | { |
Rich Felker | e40f48a | 2013-06-25 21:35:49 -0400 | [diff] [blame] | 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 | |
| 18 | in_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 | |
| 26 | in_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 | } |