--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sat/plugins/plugin_exp_invitation_file.py	Fri Apr 26 11:57:26 2019 +0200
@@ -0,0 +1,82 @@
+#!/usr/bin/env python2
+# -*- coding: utf-8 -*-
+
+# SAT plugin to detect language (experimental)
+# Copyright (C) 2009-2019 Jérôme Poisson (goffi@goffi.org)
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from sat.core.i18n import _
+from sat.core.constants import Const as C
+from sat.core.log import getLogger
+from twisted.words.protocols.jabber import jid
+
+log = getLogger(__name__)
+
+
+PLUGIN_INFO = {
+    C.PI_NAME: "File Sharing Invitation",
+    C.PI_IMPORT_NAME: "FILE_SHARING_INVITATION",
+    C.PI_TYPE: "EXP",
+    C.PI_PROTOCOLS: [],
+    C.PI_DEPENDENCIES: ["XEP-0329", u"INVITATION"],
+    C.PI_RECOMMENDATIONS: [],
+    C.PI_MAIN: "FileSharingInvitation",
+    C.PI_HANDLER: "no",
+    C.PI_DESCRIPTION: _(u"Experimental handling of invitations for file sharing"),
+}
+
+
+class FileSharingInvitation(object):
+
+    def __init__(self, host):
+        log.info(_(u"File Sharing Invitation plugin initialization"))
+        self.host = host
+        ns_fis = host.getNamespace(u"fis")
+        host.plugins[u"INVITATION"].registerNamespace(ns_fis, self.onInvitation)
+        host.bridge.addMethod(
+            "FISInvite",
+            ".plugin",
+            in_sign="sssssss",
+            out_sign="",
+            method=self._sendFileSharingInvitation,
+        )
+
+    def _sendFileSharingInvitation(
+            self, invitee_jid_s, service_s, repos_type=None, namespace=None, path=None,
+            name=None, profile_key=C.PROF_KEY_NONE):
+        client = self.host.getClient(profile_key)
+        invitee_jid = jid.JID(invitee_jid_s)
+        service = jid.JID(service_s)
+        return self.host.plugins[u"INVITATION"].sendFileSharingInvitation(
+            client, invitee_jid, service, repos_type=None, namespace=None, path=None,
+            name=None)
+
+    def onInvitation(self, client, service, repos_type, namespace, path, name):
+        if repos_type == u"files":
+            type_human = _(u"file sharing")
+        elif repos_type == u"photos":
+            type_human = _(u"photos album")
+        else:
+            log.warning(u"Unknown repository type: {repos_type}".format(
+                repos_type=repos_type))
+            repos_type = u"file"
+            type_human = _(u"file sharing")
+        log.info(_(
+            u'{profile} has received an invitation for a files repository ({type_human}) '
+            u'with namespace "{namespace}" at path [{path}]').format(
+            profile=client.profile, type_human=type_human, namespace=namespace, path=path)
+            )
+        return self.host.plugins[u'LIST_INTEREST'].registerFileSharing(
+            client, service, repos_type, namespace, path, name)