Attachment 574 Details for Bug 748 – Test getnameinfo/getaddrinfo

Test getnameinfo/getaddrinfo

getaddrinfotest.c (text/plain), 2.58 KB, created by Darren Tucker on 2004-03-22 23:10:12 AEDT

(hide)

Description:

Filename:

MIME Type:

Creator: Darren Tucker

Created: 2004-03-22 23:10:12 AEDT

Size: 2.58 KB

patch

obsolete

>/*
> * $Id: getaddrinfotest.c,v 1.3 2004/03/12 12:51:52 dtucker Exp $
> * getaddrinfotest.c: emulates what OpenSSH's sshd does when attempting
> * to bind() to an address.  Useful for debugging getaddrinfo/getnameinfo
> * problems in sshd.
> *
> * Author: Darren Tucker.
> * Placed in the public domain.
> *
> * AI_NUMERICHOST testing contributed by Sergio.Gelato (at) astro.su.se
> */
>#include <stdio.h>
>#include <sys/socket.h>
>#include <netdb.h>
>#include <netinet/in.h>
>
>#define TEST_PORT "2222"
>
>int
>main(int argc, char *argv[])
>{
>	struct addrinfo *gai_ai, *ai, hints;
>	struct sockaddr_in6 *sa;
>	int i, err, sock[64], sockno = 0;
>	char ntop[NI_MAXHOST], strport[NI_MAXSERV];
>	const char *name = NULL;
>
>	if (argc>1)
>		name = argv[1];
>	
>	memset(&hints, 0, sizeof(hints));
>	hints.ai_family = PF_UNSPEC;
>	hints.ai_socktype = SOCK_STREAM;
>	hints.ai_flags = AI_PASSIVE;
>
>	err = getaddrinfo(name, TEST_PORT, &hints, &gai_ai);
>	printf("getaddrinfo returned %d", err);
>	if (err != 0)
>		printf("(%s)", gai_strerror(err));
>	printf("\n");
>
>	for (ai = gai_ai; ai != NULL; ai = ai->ai_next) {
>		printf("Attempting to listen on family %d proto %d\n",
>		    ai->ai_family, ai->ai_protocol);
>
>		if (ai->ai_family == AF_INET6) {
>			printf("addr = 0x");
>			sa = (struct sockaddr_in6 *)ai->ai_addr;
>			for (i=0; i < 16; i++)
>				printf("%02x", sa->sin6_addr.s6_addr[i]);
>			printf("\n");
>		}
>
>		err = getnameinfo(ai->ai_addr, ai->ai_addrlen, ntop,
>		    sizeof(ntop), strport, sizeof(strport),
>		    NI_NUMERICHOST|NI_NUMERICSERV);
>		if (err != 0) {
>			if (err == EAI_SYSTEM)
>				perror("getnameinfo EAI_SYSTEM");
>			else
>				printf("getnameinfo failed: %s\n",
>				    gai_strerror(err));
>		} else
>			printf("getnameinfo returned name %s port %s\n", ntop,
>			    strport);
>
>		sock[sockno] = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
>		if (sock < 0)
>			perror("socket");
>		if (bind(sock[sockno], ai->ai_addr, ai->ai_addrlen) < 0)
>			perror("bind");
>		else
>			printf("bind() succeeded\n");
>		sockno++;
>
>		err = getnameinfo(ai->ai_addr, ai->ai_addrlen,
>			ntop, sizeof(ntop), strport, sizeof(strport),
>			NI_NAMEREQD);
>		if (err != 0) {
>			printf("getnameinfo(NI_NAMEREQD) failed: %s\n",
>				gai_strerror(err));
>		} else {
>			struct addrinfo *gai_ai2;
>			memset(&hints, 0, sizeof(hints));
>			hints.ai_family = PF_UNSPEC;
>			hints.ai_socktype = SOCK_STREAM;
>			hints.ai_flags = AI_NUMERICHOST;
>			printf("Resolved to %s:%s\n", ntop, strport);
>			err = getaddrinfo(ntop, "0", &hints, &gai_ai2);
>			if (err != 0) {
>				printf("getaddrinfo(AI_NUMERICHOST) failed: %s\n",
>					gai_strerror(err));
>			} else {
>				printf("%s is numeric\n", ntop);
>			}
>		}
>	}
>}
>

Actions: View

Attachments on bug 748: 574 | 591 | 592