From: Mark Wooding <mdw@distorted.org.uk>
Date: Sun, 4 May 2014 09:44:59 +0000 (+0100)
Subject: Makefile: Better signature corruption.
X-Git-Url: https://git.distorted.org.uk/~mdw/dnserr/commitdiff_plain/263d66f63e85b26d74a5a7c3525b7494015e4d42

Makefile: Better signature corruption.

Just twiddle the case of one letter in the signature.
---

diff --git a/Makefile b/Makefile
index d1c6653..b134f09 100644
--- a/Makefile
+++ b/Makefile
@@ -68,7 +68,16 @@ dnserr.zone.sig: dnserr.zone.sigold dnserr.zone.signew
 		if (!doneoldsig) { system("cat t.oldsig"); doneoldsig = 1; } \
 		next; \
 	     } \
-		{ gsub(/invalid-rrsigx/, "invalid-rrsig"); print; }' \
+	     $(BADSIGMATCH) { \
+		s = $$13; \
+		for (i = length(s)/2; i >= 0; i--) { \
+		  c = substr(s, i, 1); \
+		  if (c != tolower(c)) { c = tolower(c); break; } \
+		  else if (c != toupper(c)) { c = toupper(c); break; } \
+		} \
+		$$13 = substr(s, 0, i) c substr(s, i + 1); \
+	     } \
+	     { print; }' \
 		dnserr.zone.signew >$@.new
 	rm t.oldsig
 	mv $@.new $@