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https://kernel.googlesource.com/pub/scm/network/tftp/tftp-hpa
synced 2025-04-26 01:49:52 +03:00
7fe0fb941c
Add autoconf rules to detect IPv6 availability and some of the neeeded support functions. Add stubs for getaddrinfo and inet_ntop. You can disable IPv6 at compile time with ./configure --without-ipv6 Signed-off-by: Karsten Keil <kkeil@suse.de> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
52 lines
1 KiB
C
52 lines
1 KiB
C
/*
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* inet_ntop.c
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*
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* Simple version of inet_ntop()
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*
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*/
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#include "config.h"
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extern int errno;
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const char *inet_ntop(int af, const void *src,
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char *dst, socklen_t cnt)
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{
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char *p;
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switch(af) {
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case AF_INET:
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p = inet_ntoa(*((struct in_addr *)src));
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if (p) {
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if (cnt <= strlen(p)) {
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errno = ENOSPC;
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dst = NULL;
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} else
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strcpy(dst, p);
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} else
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dst = NULL;
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break;
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#ifdef HAVE_IPV6
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case AF_INET6:
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if (cnt < 40) {
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errno = ENOSPC;
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dst = NULL;
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} else {
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struct in6_addr *a = src;
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int i;
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p = (char *)dst;
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/* we do not compress :0: to :: */
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for (i = 0; i < 8; i++)
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p += sprintf(p, "%x:", ntohs(a->s6_addr16[i]));
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p--;
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*p = 0;
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}
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break;
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#endif
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default:
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errno = EAFNOSUPPORT;
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dst = NULL;
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}
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return dst;
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}
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