Mercurial > prosody-modules

annotate mod_http_avatar/mod_http_avatar.lua @ 5170:4d6af8950016

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mod_muc_moderation: Derive role from reserved nickname if occupant When using a different client to moderate than the one used to participate in the chat, e.g. a command line tool like clix, there's no occupant and no role to use in the permission check. Previously the default role based on affiliation was used. Now if you are present in the room using your reserved nick, the role you have there is used in the permission check instead of the default affiliation-derived role.
author Kim Alvefur <zash@zash.se>
date Sun, 19 Feb 2023 18:17:37 +0100
parents 5b4e7db5943c
children 0f103a6e9ba4
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1 -- Prosody IM
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2 -- Copyright (C) 2018 Emmanuel Gil Peyrot
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3 --
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4 -- This project is MIT/X11 licensed. Please see the
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5 -- COPYING file in the source package for more information.
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6
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7 local base64 = require"util.encodings".base64;
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8 local sha1 = require"util.hashes".sha1;
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9 local st = require"util.stanza";
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10 module:depends"http";
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11
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12 local vcard_storage = module:open_store"vcard";
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14 local default_avatar = [[<svg xmlns='http://www.w3.org/2000/svg' version='1.1' viewBox='0 0 150 150'>
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15 <rect width='150' height='150' fill='#888' stroke-width='1' stroke='#000'/>
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16 <text x='75' y='100' text-anchor='middle' font-size='100'>?</text>
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17 </svg>]];
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19 local function get_avatar(event, path)
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20 local request, response = event.request, event.response;
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21 local photo_type, binval;
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22 local vcard, err = vcard_storage:get(path);
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23 if vcard then
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24 vcard = st.deserialize(vcard);
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25 local photo = vcard:get_child("PHOTO", "vcard-temp");
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26 if photo then
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27 photo_type = photo:get_child_text("TYPE", "vcard-temp");
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28 binval = photo:get_child_text("BINVAL", "vcard-temp");
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29 end
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30 end
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31 if not photo_type or not binval then
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32 response.status_code = 404;
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33 response.headers.content_type = "image/svg+xml";
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34 return default_avatar;
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35 end
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36 local avatar = base64.decode(binval);
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37 local hash = sha1(avatar, true);
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38 if request.headers.if_none_match == hash then
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39 return 304;
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40 end
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41 response.headers.content_type = photo_type;
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42 response.headers.etag = hash;
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43 return avatar;
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44 end
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45
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46 module:provides("http", {
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47 route = {
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48 ["GET /*"] = get_avatar;
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49 };
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50 });