Bug#597020: libgksu: sudo mode: no second attempt and no feedback when wrong password entered

[David Kohen]

In the Ubuntu package there is an additional patch that fixes this issue,
patch following signature.
It applies and fixes the issue on the current version of jessie
(2.0.13~pre1-8)
-- 
*David Kohen - Software Engineer.*
www.panda-os.com
[image: www.panda-os.com] <http://www.panda-os.com>


## Description: Checks if buffer contains only newline before discarding it
## Origin/Author: Torsten Spindler (Canonical)
## Bug: http://pad.lv/298217
diff -Nur -x '*.orig' -x '*~' libgksu-2.0.13~pre1//libgksu/libgksu.c
libgksu-2.0.13~pre1.new//libgksu/libgksu.c
--- libgksu-2.0.13~pre1//libgksu/libgksu.c 2011-09-13 09:43:51.723178003
+0200
+++ libgksu-2.0.13~pre1.new//libgksu/libgksu.c 2011-09-13
09:46:16.603182354 +0200
@@ -2980,16 +2980,22 @@
   /* ignore the first newline that comes right after sudo receives
      the password */
   fgets (buffer, 255, fdfile);
-  /* this is the status we are interested in */
-  fgets (buffer, 255, fdfile);
+          if (!strcmp (buffer, "\n"))
+            {
+      /* this is the status we are interested in */
+      fgets (buffer, 255, fdfile);
+            }
 #else
           fcntl(parent_pipe[0], F_SETFL, fcntl(parent_pipe[0], F_GETFL) &
~O_NONBLOCK);

   /* ignore the first newline that comes right after sudo receives
      the password */
   fgets (buffer, 255, infile);
-  /* this is the status we are interested in */
-  fgets (buffer, 255, infile);
+          if (!strcmp (buffer, "\n"))
+            {
+      /* this is the status we are interested in */
+      fgets (buffer, 255, infile);
+            }
 #endif
  }
       else
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