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mod_muc_http_defaults/mod_muc_http_defaults.lua @ 4941:e7b9bc629ecc
mod_rest: Add special handling to catch MAM results from remote hosts
Makes MAM queries to remote hosts works.
As the comment says, MAM results from users' local archives or local
MUCs are returned via origin.send() which is provided in the event and
thus already worked. Results from remote hosts go via normal stanza
routing and events, which need this extra handling to catch.
This pattern of iq-set, message+, iq-result is generally limited to MAM.
Closest similar thing might be MUC join, but to really handle that you
would need the webhook callback mechanism.
author | Kim Alvefur <zash@zash.se> |
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date | Mon, 16 May 2022 19:47:09 +0200 |
parent | 4455:89e54247ade6 |
child | 5339:6d99ddd99694 |
rev | line source |
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1 -- Copyright (C) 2021 Kim Alvefur |
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2 -- |
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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 async = require "util.async"; |
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9 local uh = require "util.http"; |
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10 local jid = require "util.jid"; |
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11 local json = require "util.json"; |
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12 local st = require "util.stanza"; |
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13 |
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14 local funcs = {jid_bare = jid.bare; jid_host = jid.host; jid_node = jid.node}; |
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15 local render = require"util.interpolation".new("%b{}", uh.urlencode, funcs); |
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16 |
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17 module:depends"muc"; |
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18 |
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19 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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20 local apiauth = module:get_option_string("muc_create_api_auth", nil); |
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21 |
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22 local ex = { |
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23 headers = { |
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24 accept = "application/json"; |
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25 authorization = apiauth; |
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26 } |
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27 }; |
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28 |
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29 local problems = { |
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30 format = "API server returned invalid data, see logs", |
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31 config = "A problem occured while creating the room, see logs", |
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32 }; |
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33 |
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34 local function apply_config(room, settings) |
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35 local affiliations = settings.affiliations; |
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36 if type(affiliations) == "table" then |
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37 |
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38 -- COMPAT the room creator is unconditionally made 'owner' |
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39 -- clear existing affiliation |
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40 for existing_affiliation in pairs(room._affiliations) do |
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41 room:set_affiliation(true, existing_affiliation, "none"); |
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42 end |
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43 |
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44 if affiliations[1] ~= nil then -- array of ( jid, affiliation, nick ) |
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45 for _, aff in ipairs(affiliations) do |
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46 if type(aff) == "table" and type(aff.jid) == "string" and (aff.nick == nil or type(aff.nick) == "string") then |
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47 local prepped_jid = jid.prep(aff.jid); |
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48 if prepped_jid then |
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49 local ok, err = room:set_affiliation(true, prepped_jid, aff.affiliation, aff.nick and { nick = aff.nick }); |
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50 if not ok then |
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51 module:log("error", "Could not set affiliation in %s: %s", room.jid, err); |
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52 return nil, "config"; |
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53 end |
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54 else |
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55 module:log("error", "Invalid JID returned from API for %s: %q", room.jid, aff.jid); |
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56 return nil, "format"; |
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57 end |
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58 else |
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59 module:log("error", "Invalid affiliation item returned from API for %s: %q", room.jid, aff); |
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60 return nil, "format"; |
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61 end |
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62 end |
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63 else -- map of jid : affiliation |
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64 for user_jid, aff in pairs(affiliations) do |
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65 if type(user_jid) == "string" and type(aff) == "string" then |
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66 local prepped_jid = jid.prep(user_jid); |
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67 if prepped_jid then |
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68 local ok, err = room:set_affiliation(true, prepped_jid, aff); |
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69 if not ok then |
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70 module:log("error", "Could not set affiliation in %s: %s", room.jid, err); |
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71 return nil, "config"; |
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72 end |
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73 else |
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74 module:log("error", "Invalid JID returned from API: %q", aff.jid); |
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75 return nil, "format"; |
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76 end |
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77 end |
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78 end |
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79 end |
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80 elseif affiliations ~= nil then |
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81 module:log("error", "Invalid affiliations returned from API for %s: %q", room.jid, affiliations); |
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82 return nil, "format", { field = "affiliations" }; |
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83 end |
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84 |
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85 local config = settings.config; |
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86 if type(config) == "table" then |
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87 -- TODO reject invalid fields instead of ignoring them |
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88 if type(config.name) == "string" then room:set_name(config.name); end |
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89 if type(config.description) == "string" then room:set_description(config.description); end |
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90 if type(config.language) == "string" then room:set_language(config.language); end |
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91 if type(config.password) == "string" then room:set_password(config.password); end |
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92 if type(config.subject) == "string" then room:set_subject(config.subject); end |
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93 |
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94 if type(config.public) == "boolean" then room:set_public(config.public); end |
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95 if type(config.members_only) == "boolean" then room:set_members_only(config.members_only); end |
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96 if type(config.allow_member_invites) == "boolean" then room:set_allow_member_invites(config.allow_member_invites); end |
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97 if type(config.moderated) == "boolean" then room:set_moderated(config.moderated); end |
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98 if type(config.persistent) == "boolean" then room:set_persistent(config.persistent); end |
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99 if type(config.changesubject) == "boolean" then room:set_changesubject(config.changesubject); end |
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100 |
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101 if type(config.historylength) == "number" then room:set_historylength(config.historylength); end |
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102 if type(config.public_jids) == "boolean" then room:set_whois(config.public_jids and "anyone" or "moderators"); end |
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103 -- Leaving out presence_broadcast for now |
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104 |
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105 -- mod_muc_mam |
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106 if type(config.archiving) == "boolean" then room._config.archiving = config.archiving; end |
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107 elseif config ~= nil then |
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108 module:log("error", "Invalid config returned from API for %s: %q", room.jid, config); |
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109 return nil, "format", { field = "config" }; |
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110 end |
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111 return true; |
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112 end |
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113 |
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114 module:hook("muc-room-pre-create", function(event) |
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115 local url = render(url_template, event); |
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116 module:log("debug", "Calling API at %q for room %s", url, event.room.jid); |
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117 local wait, done = async.waiter(); |
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118 |
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119 local ret, err; |
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120 http.request(url, ex, function (body, code) |
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121 if math.floor(code / 100) == 2 then |
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122 local parsed, parse_err = json.decode(body); |
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123 if not parsed then |
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124 module:log("debug", "Got invalid JSON from %s: %s", url, parse_err); |
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125 err = problems.format; |
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126 else |
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127 ret = parsed; |
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128 end |
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129 else |
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130 module:log("debug", "Rejected by API: ", body); |
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131 err = "Rejected by API"; |
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132 end |
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133 |
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134 done() |
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135 end); |
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136 |
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137 wait(); |
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138 if not ret then |
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139 event.room:destroy(); |
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140 event.origin.send(st.error_reply(event.stanza, "cancel", "internal-server-error", err, module.host)); |
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141 return true; |
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142 end |
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143 |
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144 local configured, err = apply_config(event.room, ret); |
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145 if not configured then |
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146 event.room:destroy(); |
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147 event.origin.send(st.error_reply(event.stanza, "cancel", "internal-server-error", err, event.room.jid or module.host)); |
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148 return true; |
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149 end |
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150 end, -2); |