[dak/master] daklib/checks.py: make sure all fields in control files are UTF-8

[Ansgar Burchardt <ansgar@debian.org>]

Reference: http://bugs.debian.org/717851
---
 daklib/checks.py |   15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/daklib/checks.py b/daklib/checks.py
index fc3bb22..14fb02d 100644
--- a/daklib/checks.py
+++ b/daklib/checks.py
@@ -43,6 +43,15 @@ import yaml
 # TODO: replace by subprocess
 import commands
 
+def check_fields_for_valid_utf8(filename, control):
+    """Check all fields of a control file for valid UTF-8"""
+    for field in control.keys():
+        try:
+            field.decode('utf-8')
+            control[field].decode('utf-8')
+        except UnicodeDecodeError:
+            raise Reject('{0}: The {1} field is not valid UTF-8'.format(filename, field))
+
 class Reject(Exception):
     """exception raised by failing checks"""
     pass
@@ -160,6 +169,8 @@ class ChangesCheck(Check):
             if field not in control:
                 raise Reject('{0}: misses mandatory field {1}'.format(fn, field))
 
+        check_fields_for_valid_utf8(fn, control)
+
         source_match = re_field_source.match(control['Source'])
         if not source_match:
             raise Reject('{0}: Invalid Source field'.format(fn))
@@ -264,6 +275,8 @@ class BinaryCheck(Check):
             if field not in control:
                 raise Reject('{0}: Missing mandatory field {0}.'.format(fn, field))
 
+        check_fields_for_valid_utf8(fn, control)
+
         # check fields
 
         package = control['Package']
@@ -393,6 +406,8 @@ class SourceCheck(Check):
         control = source.dsc
         dsc_fn = source._dsc_file.filename
 
+        check_fields_for_valid_utf8(dsc_fn, control)
+
         # check fields
         if not re_field_package.match(control['Source']):
             raise Reject('{0}: Invalid Source field'.format(dsc_fn))
-- 
1.7.10.4