Mercurial > prosody-modules
annotate mod_http_avatar/mod_http_avatar.lua @ 4432:e83284d4d5c2
mod_auth_ccert/README: Add setting to ensure Prosdy asks for client certificate
This used to be the default for all services, but since it triggers
annoying popups in web browsers it was inverted in Prosody and only s2s
enables it, so it needs to be explicitly enabled for c2s again.
See trunk 115b5e32d960
Thanks debacle
author | Kim Alvefur <zash@zash.se> |
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date | Sat, 06 Feb 2021 21:34:25 +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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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 }); |