| #define _GNU_SOURCE |
| |
| #include <sys/socket.h> |
| #include <netdb.h> |
| #include <string.h> |
| #include <netinet/in.h> |
| |
| struct hostent *gethostbyname(const char *name) |
| { |
| return gethostbyname2(name, AF_INET); |
| } |
| |
| #if 0 |
| struct hostent *gethostbyname(const char *name) |
| { |
| static struct hostent h; |
| static char *h_aliases[3]; |
| static char h_canon[256]; |
| static char *h_addr_list[10]; |
| static char h_addr_data[10][4]; |
| static const struct addrinfo hint = { |
| .ai_family = AF_INET, .ai_flags = AI_CANONNAME |
| }; |
| struct addrinfo *ai, *p; |
| int i; |
| |
| switch (getaddrinfo(name, 0, &hint, &ai)) { |
| case EAI_NONAME: |
| h_errno = HOST_NOT_FOUND; |
| break; |
| case EAI_AGAIN: |
| h_errno = TRY_AGAIN; |
| break; |
| case EAI_FAIL: |
| h_errno = NO_RECOVERY; |
| break; |
| default: |
| case EAI_MEMORY: |
| case EAI_SYSTEM: |
| h_errno = NO_DATA; |
| break; |
| case 0: |
| break; |
| } |
| |
| strcpy(h_canon, ai->ai_canonname); |
| h.h_name = h_canon; |
| h.h_aliases = h_aliases; |
| h.h_aliases[0] = h_canon; |
| h.h_aliases[1] = strcmp(h_canon, name) ? (char *)name : 0; |
| h.h_length = 4; |
| h.h_addr_list = h_addr_list; |
| for (i=0, p=ai; i<sizeof h_addr_data/4 && p; i++, p=p->ai_next) { |
| h.h_addr_list[i] = h_addr_data[i]; |
| memcpy(h.h_addr_list[i], |
| &((struct sockaddr_in *)p->ai_addr)->sin_addr, 4); |
| } |
| h.h_addr_list[i] = 0; |
| h.h_addrtype = AF_INET; |
| freeaddrinfo(ai); |
| return &h; |
| } |
| #endif |