Make `env` and `plugins` commands local again

During thin client refactoring, LocalOrRemote class implementation of `run`
method was overriden by default Command implementation during instantiation of
client plugins from schema. This caused these commands to always forward this
request to IPA master.

This patch restores the original behavior: unless `--server` option was
specified, the commands will always print out local config.

https://fedorahosted.org/freeipa/ticket/6490

Reviewed-By: Stanislav Laznicka <slaznick@redhat.com>

1 files changed, 124 insertions, 0 deletions

diff --git a/ipalib/misc.py b/ipalib/misc.py
new file mode 100644
index 000000000..7206d2989
--- /dev/null
+++ b/ipalib/misc.py
@@ -0,0 +1,124 @@
+#
+# Copyright (C) 2016  FreeIPA Contributors see COPYING for license
+#
+
+import re
+from ipalib import LocalOrRemote, _, ngettext
+from ipalib.output import Output, summary
+from ipalib import Flag
+from ipalib.plugable import Registry
+
+register = Registry()
+
+# FIXME: We should not let env return anything in_server
+# when mode == 'production'.  This would allow an attacker to see the
+# configuration of the server, potentially revealing compromising
+# information.  However, it's damn handy for testing/debugging.
+
+
+class env(LocalOrRemote):
+    __doc__ = _('Show environment variables.')
+
+    msg_summary = _('%(count)d variables')
+
+    takes_args = (
+        'variables*',
+    )
+
+    takes_options = LocalOrRemote.takes_options + (
+        Flag('all',
+            cli_name='all',
+            doc=_('retrieve and print all attributes from the server. Affects command output.'),
+            exclude='webui',
+            flags=['no_option', 'no_output'],
+            default=True,
+        ),
+    )
+
+    has_output = (
+        Output('result',
+            type=dict,
+            doc=_('Dictionary mapping variable name to value'),
+        ),
+        Output('total',
+            type=int,
+            doc=_('Total number of variables env (>= count)'),
+            flags=['no_display'],
+        ),
+        Output('count',
+            type=int,
+            doc=_('Number of variables returned (<= total)'),
+            flags=['no_display'],
+        ),
+        summary,
+    )
+
+    def __find_keys(self, variables):
+        keys = set()
+        for query in variables:
+            if '*' in query:
+                pat = re.compile(query.replace('*', '.*') + '$')
+                for key in self.env:
+                    if pat.match(key):
+                        keys.add(key)
+            elif query in self.env:
+                keys.add(query)
+        return keys
+
+    def execute(self, variables=None, **options):
+        if variables is None:
+            keys = self.env
+        else:
+            keys = self.__find_keys(variables)
+        ret = dict(
+            result=dict(
+                (key, self.env[key]) for key in keys
+            ),
+            count=len(keys),
+            total=len(self.env),
+        )
+        if len(keys) > 1:
+            ret['summary'] = self.msg_summary % ret
+        else:
+            ret['summary'] = None
+        return ret
+
+
+
+class plugins(LocalOrRemote):
+    __doc__ = _('Show all loaded plugins.')
+
+    msg_summary = ngettext(
+        '%(count)d plugin loaded', '%(count)d plugins loaded', 0
+    )
+
+    takes_options = LocalOrRemote.takes_options + (
+        Flag('all',
+            cli_name='all',
+            doc=_('retrieve and print all attributes from the server. Affects command output.'),
+            exclude='webui',
+            flags=['no_option', 'no_output'],
+            default=True,
+        ),
+    )
+
+    has_output = (
+        Output('result', dict, 'Dictionary mapping plugin names to bases'),
+        Output('count',
+            type=int,
+            doc=_('Number of plugins loaded'),
+        ),
+        summary,
+    )
+
+    def execute(self, **options):
+        result = {}
+        for namespace in self.api:
+            for plugin in self.api[namespace]():
+                cls = type(plugin)
+                key = '{}.{}'.format(cls.__module__, cls.__name__)
+                result.setdefault(key, []).append(namespace)
+
+        return dict(
+            result=result,
+        )