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mod_http_avatar/mod_http_avatar.lua @ 4515:2e33eeafe962
mod_muc_markers: Prevent any markers from reaching the archive, even if untracked
Original intention was to leave alone things that this module isn't
handling. However markers in archives are just problematic without
more advanced logic about what is markable and what is not. It also
requires a more advanced query in mod_muc_rai to determine the latest
markable message instead of the latest archived message.
I'd rather keep the "is archivable" and "is markable" definition the
same for simplicity. I don't want to introduce yet another set of rules
for no reason.
No markers in MAM.
author | Matthew Wild <mwild1@gmail.com> |
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date | Mon, 22 Mar 2021 15:55:02 +0000 |
parent | 3084:5b4e7db5943c |
child | 5743:0f103a6e9ba4 |
rev | line source |
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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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13 |
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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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18 |
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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 }); |