| Rich Felker | 0b44a03 | 2011-02-12 00:22:29 -0500 | [diff] [blame] | 1 | #define _GNU_SOURCE |
| 2 | |
| 3 | #include <sys/socket.h> |
| 4 | #include <netdb.h> |
| 5 | #include <string.h> |
| 6 | #include <netinet/in.h> |
| 7 | |
| 8 | struct hostent *gethostbyname(const char *name) |
| 9 | { |
| 10 | return gethostbyname2(name, AF_INET); |
| 11 | } |
| 12 | |
| 13 | #if 0 |
| 14 | struct hostent *gethostbyname(const char *name) |
| 15 | { |
| 16 | static struct hostent h; |
| 17 | static char *h_aliases[3]; |
| 18 | static char h_canon[256]; |
| 19 | static char *h_addr_list[10]; |
| 20 | static char h_addr_data[10][4]; |
| 21 | static const struct addrinfo hint = { |
| 22 | .ai_family = AF_INET, .ai_flags = AI_CANONNAME |
| 23 | }; |
| 24 | struct addrinfo *ai, *p; |
| 25 | int i; |
| 26 | |
| 27 | switch (getaddrinfo(name, 0, &hint, &ai)) { |
| 28 | case EAI_NONAME: |
| 29 | h_errno = HOST_NOT_FOUND; |
| 30 | break; |
| 31 | case EAI_AGAIN: |
| 32 | h_errno = TRY_AGAIN; |
| 33 | break; |
| 34 | case EAI_FAIL: |
| 35 | h_errno = NO_RECOVERY; |
| 36 | break; |
| 37 | default: |
| 38 | case EAI_MEMORY: |
| 39 | case EAI_SYSTEM: |
| 40 | h_errno = NO_DATA; |
| 41 | break; |
| 42 | case 0: |
| 43 | break; |
| 44 | } |
| 45 | |
| 46 | strcpy(h_canon, ai->ai_canonname); |
| 47 | h.h_name = h_canon; |
| 48 | h.h_aliases = h_aliases; |
| 49 | h.h_aliases[0] = h_canon; |
| 50 | h.h_aliases[1] = strcmp(h_canon, name) ? (char *)name : 0; |
| 51 | h.h_length = 4; |
| 52 | h.h_addr_list = h_addr_list; |
| 53 | for (i=0, p=ai; i<sizeof h_addr_data/4 && p; i++, p=p->ai_next) { |
| 54 | h.h_addr_list[i] = h_addr_data[i]; |
| 55 | memcpy(h.h_addr_list[i], |
| 56 | &((struct sockaddr_in *)p->ai_addr)->sin_addr, 4); |
| 57 | } |
| 58 | h.h_addr_list[i] = 0; |
| 59 | h.h_addrtype = AF_INET; |
| 60 | freeaddrinfo(ai); |
| 61 | return &h; |
| 62 | } |
| 63 | #endif |