From 6d797bffbd7571df98198df26977a39b86630ac7 Mon Sep 17 00:00:00 2001
From: Rob Austein <sra@hactrn.net>
Date: Tue, 26 May 2020 15:18:35 -0400
Subject: Wow, python-version-independent hexadecimal is painful

---
 bin/dfu                        |  2 +-
 projects/cli-test/filetransfer |  2 +-
 projects/hsm/cryptech_probe    | 10 ++++++++--
 projects/hsm/cryptech_upload   |  7 +++++--
 4 files changed, 15 insertions(+), 6 deletions(-)

diff --git a/bin/dfu b/bin/dfu
index d37d3ba..50015da 100755
--- a/bin/dfu
+++ b/bin/dfu
@@ -80,7 +80,7 @@ def _write(dst, data):
         dst.write(data[i])
         time.sleep(0.1)
     if len(data) == 4:
-        print("Wrote 0x{}".format(hexlify(data)))
+        print("Wrote 0x{}".format(hexlify(data).decode("ascii")))
     else:
         print("Wrote {!r}".format(data))
 
diff --git a/projects/cli-test/filetransfer b/projects/cli-test/filetransfer
index 147f081..809c6b8 100755
--- a/projects/cli-test/filetransfer
+++ b/projects/cli-test/filetransfer
@@ -79,7 +79,7 @@ def parse_args():
 def _write(dst, data):
     dst.write(data)
     if len(data) == 4:
-        print(("Wrote 0x{!s}".format(hexlify(data))))
+        print(("Wrote 0x{!s}".format(hexlify(data).decode("ascii"))))
     else:
         print(("Wrote {!r}".format(data)))
 
diff --git a/projects/hsm/cryptech_probe b/projects/hsm/cryptech_probe
index 3d14484..68bcfd1 100755
--- a/projects/hsm/cryptech_probe
+++ b/projects/hsm/cryptech_probe
@@ -38,9 +38,15 @@ goes to stderr.
 import sys
 import time
 import argparse
-import binascii
 import serial.tools.list_ports_posix
 
+if sys.version_info.major == 2:
+    def colon_hex(raw):
+        return ":".join("{:02x}".format(ord(b)) for b in raw)
+else:
+    def colon_hex(raw):
+        return ":".join("{:02x}".format(b) for b in raw)
+
 class positive_integer(int):
     def __init__(self, value):
         if self <= 0:
@@ -102,7 +108,7 @@ for port in ports:
 
     response = tty.read(args.read_buffer_size)
     if args.debug:
-        sys.stderr.write("Received from {}: {!r} ({})\n".format(port, response, ":".join(binascii.hexlify(c) for c in response)))
+        sys.stderr.write("Received from {}: {!r} ({})\n".format(port, response, colon_hex(response)))
 
     # Check whether we got a known console prompt.
 
diff --git a/projects/hsm/cryptech_upload b/projects/hsm/cryptech_upload
index 0c18f25..aaa0f1c 100755
--- a/projects/hsm/cryptech_upload
+++ b/projects/hsm/cryptech_upload
@@ -44,7 +44,7 @@ import tarfile
 import argparse
 import platform
 
-from binascii import crc32
+from binascii import crc32, hexlify
 
 FIRMWARE_CHUNK_SIZE = 4096
 FPGA_CHUNK_SIZE     = 4096
@@ -147,7 +147,10 @@ class ManagementPortAbstract(object):
             data = struct.pack("<I", data)
         self.send(data)
         if self.args.debug:
-            print("Wrote {!r}".format(data))
+            if numeric:
+                print("Wrote 0x{}".format(hexlify(data).decode("ascii")))
+            else:
+                print("Wrote {!r}".format(data))
 
     def read(self):
         res = b""
-- 
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