Mercurial > prosody-modules
diff mod_http_avatar/mod_http_avatar.lua @ 3082:1cff081abbed
mod_http_avatar: Add a module to serve vCard-temp avatars over HTTP.
| author | Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> |
|---|---|
| date | Fri, 01 Jun 2018 22:05:46 +0200 |
| parents | |
| children | 46d71b38bc16 |
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--- /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; + }; +});