Fixes glance add / update / image-create / image-update on Windows

Fixes Bug #1050345

The image upload hangs if the file contains a byte with value 0x1A (EOF), due to
the fact that the file or stdin streams are treated as text and not
binary streams. This fix sets the proper binary mode.

Change-Id: I3425cb9729a8da4d1b73fbfba06fd6f2c7e8833e

glanceclient/v1/shell.py

@@ -15,8 +15,14 @@
 
 import argparse
 import copy
+import os
 import sys
 
+if os.name == 'nt':
+    import msvcrt
+else:
+    msvcrt = None
+
 from glanceclient.common import utils
 import glanceclient.v1.images
 
@@ -70,6 +76,16 @@ def _image_show(image):
     utils.print_dict(info)
 
 
+def _set_data_field(fields, args):
+    if 'location' not in fields and 'copy_from' not in fields:
+        if args.file:
+            fields['data'] = open(args.file, 'rb')
+        else:
+            if msvcrt:
+                msvcrt.setmode(sys.stdin.fileno(), os.O_BINARY)
+            fields['data'] = sys.stdin
+
+
 @utils.arg('id', metavar='<IMAGE_ID>', help='ID of image to describe.')
 def do_image_show(gc, args):
     """Describe a specific image."""
@@ -151,11 +167,7 @@ def do_image_create(gc, args):
     CREATE_PARAMS = glanceclient.v1.images.CREATE_PARAMS
     fields = dict(filter(lambda x: x[0] in CREATE_PARAMS, fields.items()))
 
-    if 'location' not in fields and 'copy_from' not in fields:
-        if args.file:
-            fields['data'] = open(args.file, 'r')
-        else:
-            fields['data'] = sys.stdin
+    _set_data_field(fields, args)
 
     image = gc.images.create(**fields)
     _image_show(image)
@@ -222,11 +234,7 @@ def do_image_update(gc, args):
     UPDATE_PARAMS = glanceclient.v1.images.UPDATE_PARAMS
     fields = dict(filter(lambda x: x[0] in UPDATE_PARAMS, fields.items()))
 
-    if 'location' not in fields and 'copy_from' not in fields:
-        if args.file:
-            fields['data'] = open(args.file, 'r')
-        else:
-            fields['data'] = sys.stdin
+    _set_data_field(fields, args)
 
     image = gc.images.update(image_id, purge_props=args.purge_props, **fields)
     _image_show(image)