examples: fix handling secrets in nm-wg-set

When setting any secrets via D-Bus' Update2 call, then
it assumes that all settings are reset. That means, when
we modify any secrets in the client, we need to first load
them all.

Anyway, load always all secrets, then we can also print them
in the get output.

Honor WG_HIDE_KEYS like `wg` does.

1 files changed, 17 insertions, 2 deletions

diff --git a/examples/python/gi/nm-wg-set b/examples/python/gi/nm-wg-set
index d295af2fdb..fc60f069e6 100755
--- a/examples/python/gi/nm-wg-set
+++ b/examples/python/gi/nm-wg-set
@@ -71,6 +71,7 @@
 
 import sys
 import re
+import os
 
 import gi
 gi.require_version('NM', '1.0')
@@ -226,6 +227,13 @@ def secret_flags_to_string(flags):
         return num
     return '%s (%s)' % (num, nick)
 
+def secret_to_string(secret):
+    if os.environ.get('WG_HIDE_KEYS', '') != 'never':
+        return '(hidden)'
+    if not secret:
+        return ''
+    return secret
+
 ###############################################################################
 
 def wg_read_private_key(privkey_file):
@@ -261,14 +269,14 @@ def do_get(nm_client, connection):
     print('interface:                    %s' % (s_con.get_interface_name()))
     print('uuid:                         %s' % (conn.get_uuid()))
     print('id:                           %s' % (conn.get_id()))
-    print('private-key:                  %s' % ('<hidden>'))
+    print('private-key:                  %s' % (secret_to_string(s_wg.get_private_key())))
     print('private-key-flags:            %s' % (secret_flags_to_string(s_wg.get_private_key_flags())))
     print('listen-port:                  %s' % (s_wg.get_listen_port()))
     print('fwmark:                       0x%x' % (s_wg.get_fwmark()))
     for i in range(s_wg.get_peers_len()):
         peer = s_wg.get_peer(i)
         print('peer[%d].public-key:           %s' % (i, peer.get_public_key()))
-        print('peer[%d].preshared-key:        %s' % (i, '<hidden>' if peer.get_preshared_key_flags() != NM.SettingSecretFlags.NOT_REQUIRED else ''))
+        print('peer[%d].preshared-key:        %s' % (i, secret_to_string(peer.get_preshared_key())))
         print('peer[%d].preshared-key-flags:  %s' % (i, secret_flags_to_string(peer.get_preshared_key_flags())))
         print('peer[%d].endpoint:             %s' % (i, peer.get_endpoint() if peer.get_endpoint() else ''))
         print('peer[%d].persistent-keepalive: %s' % (i, peer.get_persistent_keepalive()))
@@ -431,6 +439,13 @@ if __name__ == '__main__':
         print('See available profiles with `nmcli connection show`')
         sys.exit(1)
 
+    try:
+        secrets = conn.get_secrets(NM.SETTING_WIREGUARD_SETTING_NAME)
+        if secrets:
+            conn.update_secrets(NM.SETTING_WIREGUARD_SETTING_NAME, secrets)
+    except:
+        pass
+
     if not argv:
         do_get(nm_client, conn)
     else: