build: massively remove needless checks

Since we have autoconf results from a wide swath of target platforms, we
can go remove checks that have the same result on all systems.

This also removes several "fallback" implementations of functions that,
at some point in the history, weren't available on all target platforms.

Signed-off-by: David Lamparter <equinox@opensourcerouting.org>

1 files changed, 0 insertions, 89 deletions

diff --git a/lib/sockunion.c b/lib/sockunion.c
index 96408965ab..2aa19dc74c 100644
--- a/lib/sockunion.c
+++ b/lib/sockunion.c
@@ -31,93 +31,6 @@
 
 DEFINE_MTYPE_STATIC(LIB, SOCKUNION, "Socket union")
 
-#ifndef HAVE_INET_ATON
-int
-inet_aton (const char *cp, struct in_addr *inaddr)
-{
-  int dots = 0;
-  register u_long addr = 0;
-  register u_long val = 0, base = 10;
-
-  do
-    {
-      register char c = *cp;
-
-      switch (c)
-	{
-	case '0': case '1': case '2': case '3': case '4': case '5':
-	case '6': case '7': case '8': case '9':
-	  val = (val * base) + (c - '0');
-	  break;
-	case '.':
-	  if (++dots > 3)
-	    return 0;
-	case '\0':
-	  if (val > 255)
-	    return 0;
-	  addr = addr << 8 | val;
-	  val = 0;
-	  break;
-	default:
-	  return 0;
-	}
-    } while (*cp++) ;
-
-  if (dots < 3)
-    addr <<= 8 * (3 - dots);
-  if (inaddr)
-    inaddr->s_addr = htonl (addr);
-  return 1;
-}
-#endif /* ! HAVE_INET_ATON */
-
-
-#ifndef HAVE_INET_PTON
-int
-inet_pton (int family, const char *strptr, void *addrptr)
-{
-  if (family == AF_INET)
-    {
-      struct in_addr in_val;
-
-      if (inet_aton (strptr, &in_val))
-	{
-	  memcpy (addrptr, &in_val, sizeof (struct in_addr));
-	  return 1;
-	}
-      return 0;
-    }
-  errno = EAFNOSUPPORT;
-  return -1;
-}
-#endif /* ! HAVE_INET_PTON */
-
-#ifndef HAVE_INET_NTOP
-const char *
-inet_ntop (int family, const void *addrptr, char *strptr, size_t len)
-{
-  unsigned char *p = (unsigned char *) addrptr;
-
-  if (family == AF_INET) 
-    {
-      char temp[INET_ADDRSTRLEN];
-
-      snprintf(temp, sizeof(temp), "%d.%d.%d.%d", p[0], p[1], p[2], p[3]);
-
-      if (strlen(temp) >= len) 
-	{
-	  errno = ENOSPC;
-	  return NULL;
-	}
-      strcpy(strptr, temp);
-      return strptr;
-    }
-
-  errno = EAFNOSUPPORT;
-  return NULL;
-}
-#endif /* ! HAVE_INET_NTOP */
-
 const char *
 inet_sutop (const union sockunion *su, char *str)
 {
@@ -312,9 +225,7 @@ sockunion_connect (int fd, const union sockunion *peersu, unsigned short port,
 #ifdef KAME
       if (IN6_IS_ADDR_LINKLOCAL(&su.sin6.sin6_addr) && ifindex)
 	{
-#ifdef HAVE_STRUCT_SOCKADDR_IN6_SIN6_SCOPE_ID
 	  su.sin6.sin6_scope_id = ifindex;
-#endif /* HAVE_STRUCT_SOCKADDR_IN6_SIN6_SCOPE_ID */
 	  SET_IN6_LINKLOCAL_IFINDEX (su.sin6.sin6_addr, ifindex);
 	}
 #endif /* KAME */