Add encrypted field to comment.

See ietf-tools#913
 - Legacy-Id: 5155

Author: ejimenez

ietf/nomcom/fields.py

@@ -1,6 +1,31 @@
+import tempfile
+from django.conf import settings
 from django.db import models
 
+from ietf.utils.pipe import pipe
 
-class EncriptedTextField(models.TextField):
-    """ TODO: do the logic to store encripted text"""
+
+class EncriptedException(Exception):
     pass
+
+
+class EncriptedTextField(models.TextField):
+    def pre_save(self, instance, add):
+        if add:
+            comments = getattr(instance, 'comments')
+            position = getattr(instance, 'position')
+            cert_file = position.nomcom.public_key.path
+            comments_file = tempfile.NamedTemporaryFile()
+            comments_file.write(comments)
+
+            code, out, error = pipe("%s smime -encrypt -in %s %s" % (settings.OPENSSL_COMMAND,
+                                    comments_file.name,
+                                    cert_file))
+            comments_file.close()
+            if not error:
+                instance.comments = out
+                return out
+            else:
+                raise EncriptedException(error)
+        else:
+            return instance.comments

ietf/settings.py

@@ -261,9 +261,10 @@
 
 # NomCom Tool settings
 ROLODEX_URL = ""
-PUBLIC_KEYS_URL = BASE_DIR + "/public_keys/"
+PUBLIC_KEYS_URL = BASE_DIR + '/public_keys/'
 NOMCOM_FROM_EMAIL = DEFAULT_FROM_EMAIL
 NOMCOM_ADMIN_EMAIL = DEFAULT_FROM_EMAIL
+OPENSSL_COMMAND = '/usr/bin/openssl'
 
 # Days from meeting to cut off dates on submit
 FIRST_CUTOFF_DAYS = 19