commit b98f7715193be85454cbfe4eed7a3282788cef6e
author Giovanni Bajo <rasky@develer.com> Sun Apr 22 15:59:27 2012 +0200
committer Simon Kelley <simon@thekelleys.org.uk> Tue Aug 20 15:41:18 2013 +0100
tree 75865ec2d32b4698798f684fb06a0ec3e4e06a0e
parent c7a93f6e4e054dfd7882f90f28fe42e4e5d4f641

Filter out invalid characters in domain names.

src/dnssec.c

diff --git a/src/dnssec.c b/src/dnssec.c
index 4cf9503..c5ba5f4 100644
--- a/src/dnssec.c
+++ b/src/dnssec.c
@@ -93,6 +93,8 @@
       while (count-- >= 0 && rr < end)
         {
           *buf = *rr++;
+          if (!isascii(*buf) || iscntrl(*buf) || *buf == '.')
+            return 0;
           if (*buf >= 'A' && *buf <= 'Z')
             *buf += 'a' - 'A';
           buf++;