--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mod_vcard_muc/README.markdown	Thu May 24 20:27:48 2018 +0200
@@ -0,0 +1,27 @@
+Introduction
+============
+
+This module adds the ability to set vCard for MUC rooms. One of the most common use case is to be able to define an avatar for your own MUC room.
+
+Usage
+=====
+
+Add "vcard\_muc" to your modules\_enabled list:
+
+``` {.lua}
+Component "conference.example.org" "muc"
+modules_enabled = {
+  "vcard_muc",
+}
+```
+
+Compatibility
+=============
+
+  ----- -------------
+  trunk Works
+  0.10  Should work
+  0.9   Should work
+  ----- -------------
+
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mod_vcard_muc/mod_vcard_muc.lua	Thu May 24 20:27:48 2018 +0200
@@ -0,0 +1,91 @@
+-- Prosody IM
+-- Copyright (C) 2008-2010 Matthew Wild
+-- Copyright (C) 2008-2010 Waqas Hussain
+-- Copyright (C) 2018 Michel Le Bihan
+--
+-- This project is MIT/X11 licensed. Please see the
+-- COPYING file in the source package for more information.
+--
+
+local st = require "util.stanza"
+local jid_split = require "util.jid".split;
+local base64 = require"util.encodings".base64;
+local sha1 = require"util.hashes".sha1;
+
+local mod_muc = module:depends"muc";
+local get_room_from_jid = mod_muc.get_room_from_jid;
+
+local vcards = module:open_store();
+
+module:add_feature("vcard-temp");
+
+local function broadcast_presence(room_jid, to)
+	local room = get_room_from_jid(room_jid);
+	local room_node = jid_split(room_jid);
+	local vcard = st.deserialize(vcards:get(room_node));
+	local photo_hash;
+
+	if vcard then
+		local photo = vcard:get_child("PHOTO");
+
+		if photo then
+			local photo_b64 = photo:get_child_text("BINVAL");
+			local photo_raw = photo_b64 and base64.decode(photo_b64);
+			photo_hash = sha1(photo_raw, true);
+		end
+	end
+
+	local presence_vcard = st.presence({to = to, from = room_jid})
+		:tag("x", { xmlns = "vcard-temp:x:update" })
+			:tag("photo"):text(photo_hash):up();
+
+	if to == nil then
+		room:broadcast_message(presence_vcard);
+	else
+		module:send(presence_vcard);
+	end
+end
+
+local function handle_vcard(event)
+	local session, stanza = event.origin, event.stanza;
+
+	local room_jid = stanza.attr.to;
+	local room_node = jid_split(room_jid);
+	local room = get_room_from_jid(room_jid);
+
+	local from = stanza.attr.from;
+	local from_affiliation = room:get_affiliation(from);
+
+	if stanza.attr.type == "get" then
+		local vCard;
+		vCard = st.deserialize(vcards:get(room_node));
+
+		if vCard then
+			session.send(st.reply(stanza):add_child(vCard)); -- send vCard!
+		else
+			session.send(st.error_reply(stanza, "cancel", "item-not-found"));
+		end
+	else
+		if from_affiliation == "owner" then
+			if vcards:set(room_node, st.preserialize(stanza.tags[1])) then
+				session.send(st.reply(stanza):tag("vCard", { xmlns = "vcard-temp" }));
+				broadcast_presence(room_jid, nil)
+			else
+				-- TODO unable to write file, file may be locked, etc, what's the correct error?
+				session.send(st.error_reply(stanza, "wait", "internal-server-error"));
+			end
+		else
+			session.send(st.error_reply(stanza, "auth", "forbidden"));
+		end
+	end
+	return true;
+end
+
+
+module:hook("iq/bare/vcard-temp:vCard", handle_vcard);
+module:hook("iq/host/vcard-temp:vCard", handle_vcard);
+
+module:hook("muc-disco#info", function(event)
+	event.reply:tag("feature", { var = "vcard-temp" }):up();
+	broadcast_presence(event.room.jid, event.reply.attr.to);
+end);