s4:provision.py - try to use other addresses than "127.0.0.x" and "::1"

On production systems a user for sure strongly disagrees to use local IP
addresses (how should the server be accessible?). Therefore if the user didn't
specify an IP as provision option and in the "/etc/hosts" file we have at
least one not-local IP which resolves to our hostname use this or one of them.

Notice: if a host has more public IP addresses with the same name assigned the
behaviour is non-deterministic (well, okay - by the entries order it is). But
then the user is invited to specify the host IP manually.

This should address bug #5484.

1 files changed, 10 insertions, 2 deletions

diff --git a/source4/scripting/python/samba/provision.py b/source4/scripting/python/samba/provision.py
index 1e1bf480f5..900df89484 100644
--- a/source4/scripting/python/samba/provision.py
+++ b/source4/scripting/python/samba/provision.py
@@ -1213,13 +1213,21 @@ def provision(setup_dir, message, session_info,
 
     if hostip is None:
         try:
-            hostip = socket.getaddrinfo(names.hostname, None, socket.AF_INET, socket.AI_CANONNAME, socket.IPPROTO_IP)[0][-1][0]
+            for ip in socket.getaddrinfo(names.hostname, None, socket.AF_INET, socket.AI_CANONNAME, socket.IPPROTO_IP):
+                if hostip is None:
+                    hostip = ip[-1][0]
+                if hostip.startswith('127.0.0.') and (not ip[-1][0].startswith('127.0.0.')):
+                    hostip = ip[-1][0]
         except socket.gaierror, (socket.EAI_NODATA, msg):
             hostip = None
 
     if hostip6 is None:
         try:
-            hostip6 = socket.getaddrinfo(names.hostname, None, socket.AF_INET6, socket.AI_CANONNAME, socket.IPPROTO_IP)[0][-1][0]
+            for ip in socket.getaddrinfo(names.hostname, None, socket.AF_INET6, socket.AI_CANONNAME, socket.IPPROTO_IP):
+                if hostip6 is None:
+                    hostip6 = ip[-1][0]
+                if hostip6 == '::1' and ip[-1][0] != '::1':
+                    hostip6 = ip[-1][0]
         except socket.gaierror, (socket.EAI_NODATA, msg): 
             hostip6 = None