From 7cb5e77f1628989513f7b698d80ac3ad766a21f2 Mon Sep 17 00:00:00 2001
From: jsteube <jens.steube@gmail.com>
Date: Tue, 19 Feb 2019 10:53:49 +0100
Subject: [PATCH] Add -m 10200 unit test

---
 tools/test_modules/m10200.pm | 76 ++++++++++++++++++++++++++++++++++++
 1 file changed, 76 insertions(+)
 create mode 100644 tools/test_modules/m10200.pm

diff --git a/tools/test_modules/m10200.pm b/tools/test_modules/m10200.pm
new file mode 100644
index 000000000..a343c34e7
--- /dev/null
+++ b/tools/test_modules/m10200.pm
@@ -0,0 +1,76 @@
+#!/usr/bin/env perl
+
+##
+## Author......: See docs/credits.txt
+## License.....: MIT
+##
+
+use strict;
+use warnings;
+
+use Digest::MD5  qw (md5);
+use Digest::HMAC qw (hmac_hex);
+use MIME::Base64 qw (encode_base64 decode_base64);
+
+sub module_constraints { [[0, 255], [0, 255], [0, 55], [0, 55], [-1, -1]] }
+
+sub module_generate_hash
+{
+  my $word     = shift;
+  my $salt     = shift;
+  my $username = shift // "user";
+
+  my $challengeb64 = encode_base64 ($salt, "");
+
+  my $hash_buf = hmac_hex ($salt, $word, \&md5);
+
+  my $responseb64 = encode_base64 ($username . " " . $hash_buf, "");
+
+  my $hash = sprintf ('$cram_md5$%s$%s', $challengeb64, $responseb64);
+
+  return $hash;
+}
+
+sub module_verify_hash
+{
+  my $line = shift;
+
+  # Cram MD5
+  next unless (substr ($line, 0, 10) eq '$cram_md5$');
+
+  # get hash
+  my $index1 = index ($line, "\$", 10);
+
+  return if $index1 < 1;
+
+  # challenge
+
+  my $challengeb64 = substr ($line, 10,  $index1 - 10);
+
+  my $salt = decode_base64 ($challengeb64);
+
+  # response
+
+  my $index2 = index ($line, ":", $index1 + 1);
+
+  return if $index2 < 1;
+
+  my $responseb64 = substr ($line, $index1 + 1, $index2 - $index1 - 1);
+
+  my $response = decode_base64 ($responseb64);
+
+  my $param = substr ($response, 0, length ($response) - 32 - 1); # -1 is for space
+
+  my $word = substr ($line, $index2 + 1);
+
+  return unless defined $salt;
+  return unless defined $word;
+
+  $word = pack_if_HEX_notation ($word);
+
+  my $new_hash = module_generate_hash ($word, $salt, $param);
+
+  return ($new_hash, $word);
+}
+
+1;