author | Matthew Wild <mwild1@gmail.com> |
Sun, 28 Aug 2022 17:30:52 +0100 | |
changeset 5028 | 1cb762f72a91 |
parent 4565 | c6b740ccf6ec |
permissions | -rw-r--r-- |
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1 |
-- Allow Slack-style incoming and outgoing hooks to MUC rooms |
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2 |
-- Based on mod_muc_intercom and mod_post_msg |
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3 |
-- Copyright 2016-2017 Nathan Whitehorn <nwhitehorn@physics.ucla.edu> |
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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 |
module:depends"http" |
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|
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local msg = require "util.stanza".message; |
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local jid = require "util.jid"; |
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local now = require "util.datetime".datetime; |
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local json = require "util.json" |
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local formdecode = require "net.http".formdecode; |
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local http = require "net.http"; |
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|
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local mod_muc = module:depends"muc"; |
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local rooms = rawget(mod_muc, "rooms"); |
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local get_room_from_jid = rawget(mod_muc, "get_room_from_jid") or |
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function (room_jid) |
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return rooms[room_jid]; |
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end |
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22 |
|
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local routing = module:get_option("outgoing_webhook_routing") or {}; |
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local listen_path = module:get_option("incoming_webhook_path") or "/webhook"; |
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local default_from_nick = module:get_option("incoming_webhook_default_nick") or "Bot"; |
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|
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function postcallback(_, code) |
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module:log("debug", "HTTP result %d", code) |
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end |
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|
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function check_message(data) |
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local stanza = data.stanza; |
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local this_room = get_room_from_jid(stanza.attr.to); |
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if not this_room then return; end -- no such room |
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|
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local from_room_jid = this_room._jid_nick[stanza.attr.from]; |
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if not from_room_jid then return; end -- no such nick |
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|
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local from_room, from_host, from_nick = jid.split(from_room_jid); |
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|
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local body = stanza:get_child("body"); |
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if not body then return; end -- No body, like topic changes |
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body = body and body:get_text(); -- I feel like I want to do `or ""` there :/ |
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|
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if not routing[from_room] then |
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return; |
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48 |
end |
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local json_out = { |
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channel_name = from_room, |
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timestamp = now(), |
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text = body, |
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team_domain = from_host, |
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user_name = from_nick, |
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}; |
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local stanzaid = stanza:get_child("id"); |
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if stanzaid and string.sub(stanzaid,1,string.len("webhookbot"))=="webhookbot" then |
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json_out["bot_id"] = "webhookbot"; |
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60 |
end |
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61 |
|
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json_out = json.encode(json_out) |
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local url = routing[from_room]; |
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module:log("debug", "message from %s in %s to %s", from_nick, from_room, url); |
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if url == "DEBUG" then |
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module:log("debug", "json_out = %s", json_out); |
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return; |
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68 |
end |
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local headers = { |
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["Content-Type"] = "application/json", |
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71 |
}; |
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http.request(url, { method = "POST", body = json_out, headers = headers }, postcallback) |
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73 |
end |
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|
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module:hook("message/bare", check_message, 10); |
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76 |
|
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local function route_post(f) |
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return function(event, path) |
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local bare_room = jid.join(path, module.host); |
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if not get_room_from_jid(bare_room) then |
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module:log("warn", "mod_slack_webhook: invalid JID: %s", bare_room); |
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return 404; |
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83 |
end |
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84 |
-- Check secret? |
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85 |
return f(event, path) |
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86 |
end |
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87 |
end |
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88 |
|
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89 |
local function handle_post(event, path) |
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90 |
local request = event.request; |
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local headers = request.headers; |
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92 |
|
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93 |
local body_type = headers.content_type; |
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94 |
local post_body; |
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95 |
if body_type == "application/x-www-form-urlencoded" then |
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post_body = formdecode(request.body); |
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elseif body_type == "application/json" then |
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post_body = json.decode(request.body) |
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if not post_body then |
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return 420; |
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101 |
end |
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102 |
else |
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103 |
return 422; |
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104 |
end |
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105 |
local bare_room = jid.join(path, module.host); |
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106 |
local dest_room = get_room_from_jid(bare_room); |
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107 |
local from_nick = default_from_nick; |
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if post_body["username"] then |
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109 |
from_nick = post_body["username"]; |
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110 |
end |
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111 |
local sender = jid.join(path, module.host, from_nick); |
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112 |
module:log("debug", "message to %s from %s", bare_room, sender); |
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113 |
module:log("debug", "body: %s", post_body["text"]); |
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114 |
local message = msg({ to = bare_room, from = sender, type = "groupchat", id="webhookbot" .. now()},post_body["text"]); |
3004
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115 |
dest_room:broadcast_message(message, true); |
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116 |
return 201; |
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117 |
end |
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118 |
|
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119 |
module:provides("http", { |
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120 |
default_path = listen_path; |
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121 |
route = { |
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122 |
["POST /*"] = route_post(handle_post); |
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123 |
OPTIONS = function(e) |
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124 |
local headers = e.response.headers; |
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125 |
headers.allow = "POST"; |
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126 |
headers.accept = "application/x-www-form-urlencoded, application/json"; |
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127 |
return 200; |
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128 |
end; |
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129 |
} |
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130 |
}); |
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131 |