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annotate mod_rest/mod_rest.lua @ 3794:4b258329e6e4

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mod_rest: Initial commit of another RESTful API module
author Kim Alvefur <zash@zash.se>
date Mon, 30 Dec 2019 04:04:34 +0100
parents
children f51308fcba83
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4b258329e6e4 mod_rest: Initial commit of another RESTful API module
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1 -- RESTful API
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2 --
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3 -- Copyright (c) 2019 Kim Alvefur
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4 --
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5 -- This file is MIT/X11 licensed.
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6
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7 local errors = require "util.error";
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8 local id = require "util.id";
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9 local jid = require "util.jid";
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10 local xml = require "util.xml";
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11
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12 local allow_any_source = module:get_host_type() == "component";
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13 local validate_from_addresses = module:get_option_boolean("validate_from_addresses", true);
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14
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15 local function handle_post(event)
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16 local request, response = event.request, event.response;
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17 if request.headers.content_type ~= "application/xmpp+xml" then
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18 return errors.new({ code = 415, text = "'application/xmpp+xml' expected" });
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19 end
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20 local payload, err = xml.parse(request.body);
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21 if not payload then
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22 -- parse fail
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23 return errors.new({ code = 400, text = err });
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24 end
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25 local to = jid.prep(payload.attr.to);
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26 if not to then
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27 return errors.new({ code = 400, text = "Invalid destination JID" });
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28 end
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29 local from = module.host;
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30 if allow_any_source and payload.attr.from then
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31 from = jid.prep(payload.attr.from);
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32 if not from then
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33 return errors.new({ code = 400, text = "Invalid source JID" });
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34 end
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35 if validate_from_addresses and not jid.compare(from, module.host) then
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36 return errors.new({ code = 403, text = "Source JID must belong to current host" });
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37 end
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38 end
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39 payload.attr = {
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40 from = from,
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41 to = to,
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42 id = payload.attr.id or id.medium(),
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43 type = payload.attr.type,
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44 ["xml:lang"] = payload.attr["xml:lang"],
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45 };
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46 if payload.name == "iq" then
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47 if payload.attr.type ~= "get" and payload.attr.type ~= "set" then
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48 return errors.new({ code = 400, text = "'iq' stanza must be of type 'get' or 'set'" });
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49 end
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50 return module:send_iq(payload):next(
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51 function (result)
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52 response.headers.content_type = "application/xmpp+xml";
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53 return tostring(result.stanza);
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54 end,
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55 function (error)
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56 if error.context.stanza then
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57 response.headers.content_type = "application/xmpp+xml";
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58 return tostring(error.context.stanza);
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59 else
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60 return error;
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61 end
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62 end);
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63 elseif payload.name == "message" or payload.name == "presence" then
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64 if module:send(payload) then
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65 return 202;
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66 else
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67 return 500;
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68 end
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69 else
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70 return errors.new({ code = 400, text = "Invalid stanza, must be 'message', 'presence' or 'iq'." });
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71 end
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72 end
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73
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74 -- Handle stanzas submitted via HTTP
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75 module:depends("http");
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76 module:provides("http", {
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77 route = {
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78 POST = handle_post;
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79 };
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80 });