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$NetBSD: patch-ap,v 1.1 2006/03/06 22:49:16 joerg Exp $
--- src/host.c.orig 2006-02-14 16:41:01.000000000 +0100
+++ src/host.c
@@ -620,12 +620,18 @@ if (strchr(address, ':') != NULL)
if (*p == ':') p++;
- /* Split the address into components separated by colons. */
+ /* Split the address into components separated by colons. The input address
+ is supposed to be checked for syntax. There was a case where this was
+ overlooked; to guard against that happening again, check here and crash if
+ there is a violation. */
while (*p != 0)
{
int len = strcspn(p, ":");
if (len == 0) nulloffset = ci;
+ if (ci > 7) log_write(0, LOG_MAIN|LOG_PANIC_DIE,
+ "Internal error: invalid IPv6 address \"%s\" passed to host_aton()",
+ address);
component[ci++] = p;
p += len;
if (*p == ':') p++;
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