Diff

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mod_http_avatar/mod_http_avatar.lua	Fri Jun 01 22:05:46 2018 +0200
@@ -0,0 +1,43 @@
+-- Prosody IM
+-- Copyright (C) 2018 Emmanuel Gil Peyrot
+--
+-- This project is MIT/X11 licensed. Please see the
+-- COPYING file in the source package for more information.
+
+local base64 = require"util.encodings".base64;
+local st = require"util.stanza";
+module:depends"http";
+
+local vcard_storage = module:open_store"vcard";
+
+local default_avatar = [[<svg xmlns='http://www.w3.org/2000/svg' version='1.1' viewBox='0 0 150 150'>
+<rect width='150' height='150' fill='#888' stroke-width='1' stroke='#000'/>
+<text x='75' y='100' text-anchor='middle' font-size='100'>?</text>
+</svg>]];
+
+local function get_avatar(event, path)
+	local request, response = event.request, event.response;
+	local photo_type, binval;
+	local vcard, err = vcard_storage:get(path);
+	if vcard then
+		vcard = st.deserialize(vcard);
+		local photo = vcard:get_child("PHOTO", "vcard-temp");
+		if photo then
+			photo_type = photo:get_child_text("TYPE", "vcard-temp");
+			binval = photo:get_child_text("BINVAL", "vcard-temp");
+		end
+	end
+	if not photo_type or not binval then
+		response.status_code = 404;
+		response.headers.content_type = "image/svg+xml";
+		return default_avatar;
+	end
+	response.headers.content_type = photo_type;
+	return base64.decode(binval);
+end
+
+module:provides("http", {
+	route = {
+		["GET /*"] = get_avatar;
+	};
+});