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nslookup: full circle. Here we started IPv6 work. Use "new API"

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and thus save a few bytes.
This commit is contained in:
Denis Vlasenko
2007-01-22 22:43:05 +00:00
parent fdcd7c4237
commit 448f0241e0
3 changed files with 132 additions and 48 deletions
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24
libbb/xconnect.c
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@@ -245,25 +245,36 @@ int xconnect_stream(const len_and_sockaddr *lsa)
return fd;
}
/* We hijack this constant to mean something else */
/* It doesn't hurt because we will add this bit anyway */
#define IGNORE_PORT NI_NUMERICSERV
static char* sockaddr2str(const struct sockaddr *sa, socklen_t salen, int flags)
{
char host[128];
char serv[16];
int rc = getnameinfo(sa, salen,
host, sizeof(host),
/* can do ((flags & IGNORE_PORT) ? NULL : serv) but why bother? */
serv, sizeof(serv),
/* do not resolve port# into service _name_ */
flags | NI_NUMERICSERV
);
if (rc)
return NULL;
if (flags & IGNORE_PORT)
return xstrdup(host);
#if ENABLE_FEATURE_IPV6
if (sa->sa_family == AF_INET6)
return xasprintf("[%s]:%s", host, serv);
if (sa->sa_family == AF_INET6) {
if (strchr(host, ':')) /* heh, it's not a resolved hostname */
return xasprintf("[%s]:%s", host, serv);
/*return xasprintf("%s:%s", host, serv);*/
/* - fall through instead */
}
#endif
/* For now we don't support anything else, so it has to be INET */
/*if (sa->sa_family == AF_INET)*/
return xasprintf("%s:%s", host, serv);
/*return xstrdup(host);*/
}
char* xmalloc_sockaddr2host(const struct sockaddr *sa, socklen_t salen)
@@ -271,7 +282,16 @@ char* xmalloc_sockaddr2host(const struct sockaddr *sa, socklen_t salen)
return sockaddr2str(sa, salen, 0);
}
char* xmalloc_sockaddr2hostonly_noport(const struct sockaddr *sa, socklen_t salen)
{
return sockaddr2str(sa, salen, NI_NAMEREQD | IGNORE_PORT);
}
char* xmalloc_sockaddr2dotted(const struct sockaddr *sa, socklen_t salen)
{
return sockaddr2str(sa, salen, NI_NUMERICHOST);
}
char* xmalloc_sockaddr2dotted_noport(const struct sockaddr *sa, socklen_t salen)
{
return sockaddr2str(sa, salen, NI_NUMERICHOST | IGNORE_PORT);
}