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annotate mod_http_pep_avatar/mod_http_pep_avatar.lua @ 5418:f2c7bb3af600

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mod_http_oauth2: Add role selector to consent page List includes all roles available to the user, if more than one. Defaults to either the first role in the scope string or the users primary role. Earlier draft listed all roles, but having options that can't be selected is bad UX and the entire list of all roles on the server could be long, and perhaps even sensitive. Allows e.g. picking a role with fewer permissions than what might otherwise have been selected. UX wise, doing this with more checkboxes or possibly radio buttons would have been confusion and/or looked messier. Fixes the previous situation where unselecting a role would default to the primary role, which could be more permissions than requested.
author Kim Alvefur <zash@zash.se>
date Fri, 05 May 2023 01:23:13 +0200
parents 02d238799537
children
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1 -- HTTP Access to PEP Avatar
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2 -- By Kim Alvefur <zash@zash.se>
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3
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4 local mod_pep = module:depends"pep";
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5
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6 local um = require "core.usermanager";
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7 local nodeprep = require "util.encodings".stringprep.nodeprep;
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8 local base64_decode = require "util.encodings".base64.decode;
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9 local urlencode = require "util.http".urlencode;
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10
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11 module:depends("http")
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12 module:provides("http", {
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13 route = {
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14 ["GET /*"] = function (event, path)
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15 if path == "" then
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16 return [[<h1>Hello from mod_http_pep_avatar</h1><p>This module provides access to public avatars of local users.</p>]];
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17 end;
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18
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19 local request, response = event.request, event.response;
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20 local actor = request.ip;
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22 local user, item_id = path:match("^([^/]+)/(%x+)$");
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23 if not user then user = path; end
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24 local prepped = nodeprep(user);
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25 if not prepped then return 400; end
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26 if prepped ~= user then
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27 response.headers.location = module:http_url() .. "/" .. urlencode(prepped);
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28 return 302;
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29 end
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30 if not um.user_exists(user, module.host) then
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31 return 404;
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32 end
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33
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34 local pep_service = mod_pep.get_pep_service(user);
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35
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36 local ok, avatar_hash, avatar_meta = pep_service:get_last_item("urn:xmpp:avatar:metadata", actor);
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37
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38 if not ok or not avatar_hash then
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39 return 404;
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40 end
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42 if (item_id or avatar_hash) == request.headers.if_none_match then
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43 return 304;
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44 end
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45
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46 local data_ok, avatar_data = pep_service:get_items("urn:xmpp:avatar:data", actor, item_id or avatar_hash);
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47 if not data_ok or type(avatar_data) ~= "table" or not avatar_data[item_id or avatar_hash] then
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48 return 404;
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49 end
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50
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51 local info = avatar_meta.tags[1]:get_child("info");
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52 if item_id and info.attr.id ~= item_id then
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53 info = nil;
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54 for altinfo in avatar_meta.tags[1]:childtags("info") do
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55 if altinfo.attr.id == item_id then
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56 info = altinfo;
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57 end
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58 end
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59 end
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60
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61 if not info then
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62 return 404;
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63 end
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65 response.headers.etag = item_id or avatar_hash;
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66
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67 response.headers.content_type = info and info.attr.type or "application/octet-stream";
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68
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69 local data = avatar_data[item_id or avatar_hash];
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70 return base64_decode(data.tags[1]:get_text());
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71 end;
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72 }
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73 });