[PATCH][master/morty/1.32] toaster: settings set ALLOWED_HOSTS to * in debug mode

[Michael Wood <michael.g.wood@intel.com>]

From: brian avery <brian.avery@intel.com>

As of Django 1.8.16, Django is rejecting any HTTP_HOST header that is
not on the ALLOWED_HOST list.  We often need to reference the
toaster server via a fqdn, if we start it via webport=0.0.0.0:8000 for
instance, and are hitting the server from a laptop. This change does
reduce  the protection from a DNS rebinding attack, however, if you are
running the toaster server outside a protected network, you should be
using the production instance.

[YOCTO #10578]

Signed-off-by: brian avery <brian.avery@intel.com>
Signed-off-by: Michael Wood <michael.g.wood@intel.com>
---
 lib/toaster/toastermain/settings.py | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/lib/toaster/toastermain/settings.py b/lib/toaster/toastermain/settings.py
index 3dfa2b2..aec9dbb 100644
--- a/lib/toaster/toastermain/settings.py
+++ b/lib/toaster/toastermain/settings.py
@@ -60,9 +60,19 @@ DATABASES = {
 if 'sqlite' in DATABASES['default']['ENGINE']:
     DATABASES['default']['OPTIONS'] = { 'timeout': 20 }
 
-# Hosts/domain names that are valid for this site; required if DEBUG is False
-# See https://docs.djangoproject.com/en/1.5/ref/settings/#allowed-hosts
-ALLOWED_HOSTS = []
+# Update as of django 1.8.16 release, the '*' is needed to allow us to connect while running
+# on hosts without explicitly setting the fqdn for the toaster server.
+# See https://docs.djangoproject.com/en/dev/ref/settings/ for info on ALLOWED_HOSTS
+# Previously this setting was not enforced if DEBUG was set but it is now.
+# The previous behavior was such that ALLOWED_HOSTS defaulted to ['localhost','127.0.0.1','::1']
+# and if you bound to 0.0.0.0:<port #> then accessing toaster as localhost or fqdn would both work.
+# To have that same behavior, with a fqdn explicitly enabled you would set
+# ALLOWED_HOSTS= ['localhost','127.0.0.1','::1','myserver.mycompany.com'] for
+# Django >= 1.8.16. By default, we are not enforcing this restriction in
+# DEBUG mode.
+if DEBUG is True:
+    # this will allow connection via localhost,hostname, or fqdn
+    ALLOWED_HOSTS = ['*']
 
 # Local time zone for this installation. Choices can be found here:
 # http://en.wikipedia.org/wiki/List_of_tz_zones_by_name
-- 
2.7.4