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#include <string.h>
#include <strings.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <stdlib.h>
#include <arpa/inet.h>
#include <unistd.h>
#include "dietfeatures.h"
#include <errno.h>
#include "dietdns.h"
/* Oh boy, this interface sucks so badly, there are no words for it.
* Not one, not two, but _three_ error signalling methods! (*h_errnop
* nonzero? return value nonzero? *RESULT zero?) The glibc goons
* really outdid themselves with this one. */
int gethostbyname_r(const char* name, struct hostent* result,
char *buf, size_t buflen,
struct hostent **RESULT, int *h_errnop) {
size_t L=strlen(name);
result->h_name=buf;
if (buflen<L) { *h_errnop=ERANGE; return 1; }
strcpy(buf,name);
#ifdef WANT_INET_ADDR_DNS
result->h_addr_list=(char**)(buf+strlen(name)+1);
result->h_addr_list+=sizeof(unsigned long)-((unsigned long)(result->h_addr_list)&(sizeof(unsigned long)-1));
result->h_addr_list[0]=(char*)&result->h_addr_list[2];
if (inet_pton(AF_INET,name,result->h_addr_list[0])) {
result->h_addrtype=AF_INET;
result->h_length=4;
commonip:
result->h_aliases=result->h_addr_list+2*sizeof(char**);
result->h_aliases[0]=0;
result->h_addr_list[1]=0;
*RESULT=result;
*h_errnop=0;
return 0;
} else if (inet_pton(AF_INET6,name,result->h_addr_list[0])) {
result->h_addrtype=AF_INET6;
result->h_length=16;
goto commonip;
}
#endif
#ifdef WANT_ETC_HOSTS
{
struct hostent* r;
while ((r=gethostent_r(buf,buflen))) {
int i;
if (r->h_addrtype==AF_INET && !strcasecmp(r->h_name,name)) { /* found it! */
found:
memmove(result,r,sizeof(struct hostent));
*RESULT=result;
*h_errnop=0;
endhostent();
return 0;
}
for (i=0; i<16; ++i) {
if (r->h_aliases[i]) {
if (!strcasecmp(r->h_aliases[i],name)) goto found;
} else break;
}
}
endhostent();
}
#endif
return __dns_gethostbyx_r(name,result,buf+L,buflen-L,RESULT,h_errnop,1);
}
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