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#include <netdb.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include <sys/socket.h>
#include <netinet/in.h>
#define satosin(x) ((struct sockaddr_in *) &(x))
#define SOCKADDR(x) (satosin(x)->sin_addr.s_addr)
#define SOCKADDR_2(x) (satosin(x)->sin_addr)
#define SOCKPORT(x) (satosin(x)->sin_port)
#define SOCKFAMILY(x) (satosin(x)->sin_family)
#define ASSERT(X) { if(!(X)) printf("ASSERTION FAILED: %s @%s:%d\n", # X, __FILE__, __LINE__); }
#define CLR() { hbuf[0] = 0; sbuf[0] = 0; }
int main() {
struct sockaddr_in a = {0}, *sa = &a;
char hbuf[NI_MAXHOST], sbuf[NI_MAXSERV];
a.sin_port = htons(80);
memcpy( &a.sin_addr , (char[]) {127,0,0,1}, 4);
int ret;
if ((ret = getnameinfo((void*)sa, 0, hbuf, sizeof(hbuf), sbuf,
sizeof(sbuf), NI_NUMERICHOST | NI_NUMERICSERV)) == 0)
printf("host=%s, serv=%s\n", hbuf, sbuf);
else
printf("%s\n", gai_strerror(ret));
ASSERT(ret == EAI_FAMILY);
CLR();
if ((ret = getnameinfo((void*)sa, sizeof a, hbuf, sizeof(hbuf), sbuf,
sizeof(sbuf), NI_NUMERICHOST | NI_NUMERICSERV)) == 0)
printf("host=%s, serv=%s\n", hbuf, sbuf);
else
printf("%s\n", gai_strerror(ret));
ASSERT(ret == EAI_FAMILY);
CLR();
SOCKFAMILY(a) = AF_INET;
if ((ret = getnameinfo((void*)sa, sizeof a, hbuf, 1, sbuf,
sizeof(sbuf), NI_NUMERICHOST | NI_NUMERICSERV)) == 0)
printf("host=%s, serv=%s\n", hbuf, sbuf);
else
printf("%s\n", gai_strerror(ret));
ASSERT(ret == EAI_OVERFLOW);
CLR();
if ((ret = getnameinfo((void*)sa, sizeof a, hbuf, 0, sbuf,
1, NI_NUMERICHOST | NI_NUMERICSERV)) == 0)
printf("host=%s, serv=%s\n", hbuf, sbuf);
else
printf("%s\n", gai_strerror(ret));
ASSERT(ret == EAI_OVERFLOW);
CLR();
if ((ret = getnameinfo((void*)sa, sizeof(a) - 1, hbuf, 0, sbuf,
sizeof(sbuf), NI_NUMERICHOST | NI_NUMERICSERV)) == 0)
printf("host=%s, serv=%s\n", hbuf, sbuf);
else
printf("%s\n", gai_strerror(ret));
ASSERT(ret == EAI_FAMILY);
CLR();
if ((ret = getnameinfo((void*)sa, sizeof a, hbuf, 0, sbuf,
sizeof(sbuf), NI_NUMERICHOST | NI_NUMERICSERV)) == 0)
printf("host=%s, serv=%s\n", hbuf, sbuf);
else
printf("%s\n", gai_strerror(ret));
ASSERT(ret == 0 && !strcmp("80", sbuf));
CLR();
if ((ret = getnameinfo((void*)sa, sizeof a, hbuf, sizeof hbuf, sbuf,
0, NI_NUMERICHOST | NI_NUMERICSERV)) == 0)
printf("host=%s, serv=%s\n", hbuf, sbuf);
else
printf("%s\n", gai_strerror(ret));
ASSERT(ret == 0 && !strcmp("127.0.0.1",hbuf));
CLR();
if ((ret = getnameinfo((void*)sa, sizeof a, hbuf, sizeof(hbuf), sbuf,
sizeof(sbuf), NI_NUMERICHOST | NI_NUMERICSERV)) == 0)
printf("host=%s, serv=%s\n", hbuf, sbuf);
else
printf("%s\n", gai_strerror(ret));
ASSERT(ret == 0 && !strcmp("127.0.0.1",hbuf) && !strcmp("80", sbuf));
CLR();
struct sockaddr_in6 b = {0}, *sb = &b;
b.sin6_port = htons(8080);
b.sin6_family = AF_INET6;
memcpy(&b.sin6_addr,"\0\0\0\0\0\0\0\0\0\0\xff\xff\xc0\xa8\1\2", 16);
if ((ret = getnameinfo((void*)sb, sizeof b, hbuf, sizeof(hbuf), sbuf,
sizeof(sbuf), NI_NUMERICHOST | NI_NUMERICSERV)) == 0)
printf("host=%s, serv=%s\n", hbuf, sbuf);
else
printf("%s\n", gai_strerror(ret));
ASSERT(ret == 0 && !strcmp("192.168.1.2",hbuf) && !strcmp("8080", sbuf));
CLR();
b.sin6_scope_id = 3;
memcpy(&b.sin6_addr,"\0\0\xaa\0\0\0\0\0\0\0\0\xff\xc0\xa8\1\2", 16);
if ((ret = getnameinfo((void*)sb, sizeof b, hbuf, sizeof(hbuf), sbuf,
sizeof(sbuf), NI_NUMERICHOST | NI_NUMERICSERV | NI_NUMERICSCOPE)) == 0)
printf("host=%s, serv=%s\n", hbuf, sbuf);
else
printf("%s\n", gai_strerror(ret));
ASSERT(ret == 0);
b.sin6_port = 0;
b.sin6_scope_id = 0;
memcpy(&b.sin6_addr,"\0\0\0\0" "\0\0\0\0" "\0\0\0\0" "\0\0\0\1", 16);
if ((ret = getnameinfo((void*)sb, sizeof b, hbuf, sizeof(hbuf), NULL,
0, NI_NUMERICHOST)) == 0)
printf("host=%s\n", hbuf);
else
printf("%s\n", gai_strerror(ret));
ASSERT(ret == 0);
return 0;
}
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