63 lines
1.3 KiB
C
63 lines
1.3 KiB
C
#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
|