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annotate mod_post_msg/mod_post_msg.lua @ 2731:d48faff92490

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mod_http_upload: Remove MIME type restrictions and checking (fixes #958)
author Kim Alvefur <zash@zash.se>
date Sat, 22 Jul 2017 23:14:13 +0200
parents a0375f84d65a
children 926aaaeb0d21
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1 module:depends"http"
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2
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3 local jid_split = require "util.jid".split;
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4 local jid_prep = require "util.jid".prep;
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5 local msg = require "util.stanza".message;
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6 local test_password = require "core.usermanager".test_password;
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7 local b64_decode = require "util.encodings".base64.decode;
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8 local formdecode = require "net.http".formdecode;
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9 local xml = require"util.xml";
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10
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11 local function require_valid_user(f)
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12 return function(event, path)
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13 local request = event.request;
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14 local response = event.response;
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15 local headers = request.headers;
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16 if not headers.authorization then
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17 response.headers.www_authenticate = ("Basic realm=%q"):format(module.host.."/"..module.name);
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18 return 401
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19 end
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20 local from_jid, password = b64_decode(headers.authorization:match"[^ ]*$"):match"([^:]*):(.*)";
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21 from_jid = jid_prep(from_jid);
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22 if from_jid and password then
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23 local user, host = jid_split(from_jid);
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24 local ok, err = test_password(user, host, password);
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25 if ok and user and host then
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26 module:log("debug", "Authed as %s", from_jid);
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27 return f(event, path, from_jid);
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28 elseif err then
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29 module:log("debug", "User failed authentication: %s", err);
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30 end
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31 end
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32 return 401
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33 end
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34 end
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35
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36 local function handle_post(event, path, authed_user)
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37 local request = event.request;
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38 local response = event.response;
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39 local headers = request.headers;
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40
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41 local body_type = headers.content_type;
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42 local to = jid_prep(path);
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43 local message;
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44 if body_type == "text/plain" then
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45 if to and request.body then
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46 message = msg({ to = to, from = authed_user, type = "chat"},request.body);
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47 end
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48 elseif body_type == "application/x-www-form-urlencoded" then
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49 local post_body = formdecode(request.body);
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50 message = msg({ to = post_body.to or to, from = authed_user,
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51 type = post_body.type or "chat"}, post_body.body);
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52 if post_body.html then
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53 local html, err = xml.parse([[<body xmlns="http://www.w3.org/1999/xhtml">]]..post_body.html..[[</body>]]);
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54 if not html then
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55 module:log("warn", "mod_post_msg: invalid XML: %s", err);
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56 return 400;
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57 end
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58 message:tag("html", {xmlns="http://jabber.org/protocol/xhtml-im"}):add_child(html):up();
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59 end
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60 else
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61 return 415;
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62 end
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63 if message and message.attr.to then
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64 module:log("debug", "Sending %s", tostring(message));
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65 module:send(message);
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66 return 201;
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67 end
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68 return 422;
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69 end
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70
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71 module:provides("http", {
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72 default_path = "/msg";
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73 route = {
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74 ["POST /*"] = require_valid_user(handle_post);
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75 OPTIONS = function(e)
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76 local headers = e.response.headers;
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77 headers.allow = "POST";
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78 headers.accept = "application/x-www-form-urlencoded, text/plain";
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79 return 200;
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80 end;
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81 }
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82 });