prosody-modules
07aa101a1ae7
mod_muc_http_defaults/mod_muc_http_defaults.lua

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mod_muc_http_defaults/mod_muc_http_defaults.lua @ 4447:07aa101a1ae7

mod_muc_http_defaults: Get MUC room config from an API
author Kim Alvefur <zash@zash.se>
date Fri, 19 Feb 2021 16:01:41 +0100
child 4448:5879ca1f7853
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4447
07aa101a1ae7 mod_muc_http_defaults: Get MUC room config from an API
Kim Alvefur <zash@zash.se>
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1 -- Copyright (C) 2021 Kim Alvefur
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2 --
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Kim Alvefur <zash@zash.se>
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3 -- This file is MIT licensed. Please see the
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4 -- COPYING file in the source package for more information.
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5 --
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6
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7 local http = require "net.http";
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8 local httperr = require "net.http.errors";
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9 local async = require "util.async";
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10 local errors = require "util.error";
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11 local uh = require "util.http";
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12 local jid = require "util.jid";
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13 local json = require "util.json";
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14 local st = require "util.stanza";
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15
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16 local render = require "util.interpolation".new("%b{}", uh.urlencode);
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17
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18 module:depends"muc";
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19
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20 local url_template = assert(module:get_option_string("muc_create_api_url", nil), "'muc_create_api_url' is a required option");
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21 local apiauth = module:get_option_string("muc_create_api_auth", nil);
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22
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23 local ex = {
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24 headers = {
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25 accept = "application/json";
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26 authorization = apiauth;
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27 }
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28 };
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29
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30 local function check_status(response)
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31 if math.floor(response.code/100) > 2 then
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32 error(httperr.new(response.code, response.body));
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33 end
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34 return response;
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35 end
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36
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37 local problems = errors.init(module.name, {
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38 format = { type = "cancel", condition = "internal-server-error", text = "API server returned invalid data, see logs" },
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39 config = { type = "cancel", condition = "internal-server-error", text = "A problem occured while creating the room, see logs" },
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40 });
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41
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42 local function get_json(response)
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43 return assert(json.decode(response.body), problems.new("format"));
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44 end
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45
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46 local function apply_config(room, settings)
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47 local affiliations = settings.affiliations;
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48 if type(affiliations) == "table" then
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49
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50 -- COMPAT the room creator is unconditionally made 'owner'
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51 -- clear existing affiliation
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52 for existing_affiliation in pairs(room._affiliation) do
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53 room:set_affiliation(true, existing_affiliation, "none");
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54 end
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55
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56 if affiliations[1] ~= nil then -- array of ( jid, affiliation, nick )
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57 for _, aff in ipairs(affiliations) do
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58 if type(aff) == "table" and type(aff.jid) == "string" and (aff.nick == nil or type(aff.nick) == "string") then
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59 local prepped_jid = jid.prep(aff.jid);
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60 if prepped_jid then
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61 local ok, err = room:set_affiliation(true, prepped_jid, aff.affiliation, aff.nick and { nick = aff.nick });
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62 if not ok then
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63 module:log("error", "Could not set affiliation in %s: %s", room.jid, err);
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64 return nil, problems.new("config");
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65 end
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66 else
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67 module:log("error", "Invalid JID returned from API for %s: %q", room.jid, aff.jid);
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68 return nil, problems.new("format");
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69 end
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70 else
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71 module:log("error", "Invalid affiliation item returned from API for %s: %q", room.jid, aff);
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72 return nil, problems.new("format");
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73 end
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74 end
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75 else -- map of jid : affiliation
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76 for user_jid, aff in pairs(affiliations) do
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77 if type(user_jid) == "string" and type(aff) == "string" then
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78 local prepped_jid = jid.prep(user_jid);
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79 if prepped_jid then
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80 local ok, err = room:set_affiliation(true, prepped_jid, aff);
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81 if not ok then
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82 module:log("error", "Could not set affiliation in %s: %s", room.jid, err);
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83 return nil, problems.new("config");
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84 end
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85 else
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86 module:log("error", "Invalid JID returned from API: %q", aff.jid);
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87 return nil, problems.new("format");
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88 end
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89 end
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90 end
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91 end
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92 elseif affiliations ~= nil then
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93 module:log("error", "Invalid affiliations returned from API for %s: %q", room.jid, affiliations);
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94 return nil, problems.new("format", { field = "affiliations" });
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95 end
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96
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97 local config = settings.config;
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98 if type(config) == "table" then
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99 -- TODO reject invalid fields instead of ignoring them
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100 if type(config.name) == "string" then room:set_name(config.name); end
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101 if type(config.description) == "string" then room:set_description(config.description); end
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102 if type(config.language) == "string" then room:set_language(config.language); end
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103 if type(config.password) == "string" then room:set_password(config.password); end
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104 if type(config.subject) == "string" then room:set_subject(config.subject); end
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105
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106 if type(config.public) == "boolean" then room:set_public(config.public); end
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107 if type(config.members_only) == "boolean" then room:set_members_only(config.members_only); end
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108 if type(config.allow_member_invites) == "boolean" then room:set_allow_member_invites(config.allow_member_invites); end
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109 if type(config.moderated) == "boolean" then room:set_moderated(config.moderated); end
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110 if type(config.persistent) == "boolean" then room:set_persistent(config.persistent); end
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111 if type(config.changesubject) == "boolean" then room:set_changesubject(config.changesubject); end
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112
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113 if type(config.historylength) == "number" then room:set_historylength(config.historylength); end
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114 if type(config.public_jids) == "boolean" then room:set_whois(config.public_jids and "anyone" or "moderators"); end
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115 -- Leaving out presence_broadcast for now
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116
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117 -- mod_muc_mam
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118 if type(config.archiving) == "boolean" then room._config.archiving = config.archiving; end
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119 elseif config ~= nil then
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120 module:log("error", "Invalid config returned from API for %s: %q", room.jid, config);
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121 return nil, problems.new("format", { field = "config" });
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122 end
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123 return true;
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124 end
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125
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126 module:hook("muc-room-pre-create", function(event)
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127 local url = render(url_template, event);
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128 module:log("debug", "Calling API at %q for room %s", url, event.room.jid);
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129 local ret, err = errors.coerce(async.wait_for(http.request(url, ex):next(check_status):next(get_json)));
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130 if not ret then
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131 event.room:destroy();
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132 event.origin.send(st.error_reply(event.stanza, err));
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133 return true;
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134 end
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135
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136 local configured, err = apply_config(event.room, ret);
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137 if not configured then
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138 event.room:destroy();
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139 event.origin.send(st.error_reply(event.stanza, err));
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140 return true;
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141 end
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142 end, -2);