Mercurial > prosody-modules
view mod_http_avatar/mod_http_avatar.lua @ 4224:816c2fa1ca84
mod_invites*: Also link to mod_invites_api
author | Kim Alvefur <zash@zash.se> |
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date | Mon, 19 Oct 2020 22:02:30 +0200 |
parents | 5b4e7db5943c |
children | 0f103a6e9ba4 |
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-- 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 sha1 = require"util.hashes".sha1; 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 local avatar = base64.decode(binval); local hash = sha1(avatar, true); if request.headers.if_none_match == hash then return 304; end response.headers.content_type = photo_type; response.headers.etag = hash; return avatar; end module:provides("http", { route = { ["GET /*"] = get_avatar; }; });