prosody-modules
724003f24308
mod_slack_webhooks/mod_slack_webhooks.lua

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mod_slack_webhooks/mod_slack_webhooks.lua @ 4560:724003f24308

Back out 82689acd1294 (non-standard buttons)
author Kim Alvefur <zash@zash.se>
date Fri, 21 May 2021 20:58:10 +0200
parent 3443:284d8c18060e
child 4561:c6b740ccf6ec
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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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8
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9 local msg = require "util.stanza".message;
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10 local jid = require "util.jid";
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11 local now = require "util.datetime".datetime;
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12 local json = require "util.json"
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13 local formdecode = require "net.http".formdecode;
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14 local http = require "net.http";
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15 local dataform = require "util.dataforms";
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16
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17 local mod_muc = module:depends"muc";
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18 local rooms = rawget(mod_muc, "rooms");
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19 local get_room_from_jid = rawget(mod_muc, "get_room_from_jid") or
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20 function (room_jid)
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21 return rooms[room_jid];
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22 end
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23
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24 local routing = module:get_option("outgoing_webhook_routing") or {};
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25 local listen_path = module:get_option("incoming_webhook_path") or "/webhook";
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26 local default_from_nick = module:get_option("incoming_webhook_default_nick") or "Bot";
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27
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28 function postcallback(_, code)
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29 module:log("debug", "HTTP result %d", code)
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30 end
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31
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32 function check_message(data)
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33 local stanza = data.stanza;
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34
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35 local this_room = get_room_from_jid(stanza.attr.to);
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36 if not this_room then return; end -- no such room
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37
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38 local from_room_jid = this_room._jid_nick[stanza.attr.from];
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39 if not from_room_jid then return; end -- no such nick
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40
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41 local from_room, from_host, from_nick = jid.split(from_room_jid);
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42
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43 local body = stanza:get_child("body");
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44 if not body then return; end -- No body, like topic changes
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45 body = body and body:get_text(); -- I feel like I want to do `or ""` there :/
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46
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47 if not routing[from_room] then
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48 return;
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49 end
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50
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51 local json_out = {
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52 channel_name = from_room,
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53 timestamp = now(),
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54 text = body,
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55 team_domain = from_host,
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56 user_name = from_nick,
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57 };
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58 local stanzaid = stanza:get_child("id");
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59 if stanzaid and string.sub(stanzaid,1,string.len("webhookbot"))=="webhookbot" then
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60 json_out["bot_id"] = "webhookbot";
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61 end
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62
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63 json_out = json.encode(json_out)
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64 local url = routing[from_room];
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65 module:log("debug", "message from %s in %s to %s", from_nick, from_room, url);
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66 if url == "DEBUG" then
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67 module:log("debug", "json_out = %s", json_out);
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68 return;
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69 end
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70 local headers = {
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71 ["Content-Type"] = "application/json",
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72 };
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73 http.request(url, { method = "POST", body = json_out, headers = headers }, postcallback)
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74 end
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75
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76 module:hook("message/bare", check_message, 10);
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77
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78 local function route_post(f)
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79 return function(event, path)
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80 local bare_room = jid.join(path, module.host);
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81 if not get_room_from_jid(bare_room) then
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82 module:log("warn", "mod_slack_webhook: invalid JID: %s", bare_room);
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83 return 404;
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84 end
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85 -- Check secret?
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86 return f(event, path)
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87 end
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88 end
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89
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90 local function handle_post(event, path)
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91 local request = event.request;
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92 local headers = request.headers;
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93
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94 local body_type = headers.content_type;
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95 local post_body;
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96 if body_type == "application/x-www-form-urlencoded" then
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97 post_body = formdecode(request.body);
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98 elseif body_type == "application/json" then
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99 post_body = json.decode(request.body)
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100 if not post_body then
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101 return 420;
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102 end
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103 else
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104 return 422;
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105 end
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106 local bare_room = jid.join(path, module.host);
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107 local dest_room = get_room_from_jid(bare_room);
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108 local from_nick = default_from_nick;
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109 if post_body["username"] then
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110 from_nick = post_body["username"];
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111 end
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112 local sender = jid.join(path, module.host, from_nick);
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113 module:log("debug", "message to %s from %s", bare_room, sender);
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114 module:log("debug", "body: %s", post_body["text"]);
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115 local message = msg({ to = bare_room, from = sender, type = "groupchat", id="webhookbot" .. now()},post_body["text"]);
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116
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117 if type(post_body["attachments"]) == "table" then -- Buttons?
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118 -- luacheck: ignore 631
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119 -- defensive against JSON having whatever data in it, enjoy
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120
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121 for _, attachment in ipairs(post_body["attachments"]) do
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122 if type(attachment) == "table" and type(attachment.actions) == "table" and type(attachment.callback_id) == "string" then
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123 local buttons = {};
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124 local button_name;
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125 for _, action in ipairs(attachment.actions) do
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126 if type(attachment.text) == "string" then
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127 buttons.label = attachment.text;
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128 end
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129 if type(action) == "table" and action.type == "button" and type(action.name) == "string" and type(action.value) == "string" then
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130 if not button_name then
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131 button_name = action.name;
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132 end
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Kim Alvefur <zash@zash.se>
parents: 3097
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133 if button_name == action.name then
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parents: 3097
diff changeset
134 local button = {
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parents: 3097
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135 value = action.value;
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Kim Alvefur <zash@zash.se>
parents: 3097
diff changeset
136 };
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Kim Alvefur <zash@zash.se>
parents: 3097
diff changeset
137 if type(action.text) == "string" then
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Kim Alvefur <zash@zash.se>
parents: 3097
diff changeset
138 button.label = action.text;
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Kim Alvefur <zash@zash.se>
parents: 3097
diff changeset
139 end
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Kim Alvefur <zash@zash.se>
parents: 3097
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140 table.insert(buttons, button);
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Kim Alvefur <zash@zash.se>
parents: 3097
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141 end
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Kim Alvefur <zash@zash.se>
parents: 3097
diff changeset
142 end
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Kim Alvefur <zash@zash.se>
parents: 3097
diff changeset
143 end
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Kim Alvefur <zash@zash.se>
parents: 3097
diff changeset
144 if button_name then
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Kim Alvefur <zash@zash.se>
parents: 3097
diff changeset
145 message:add_direct_child(dataform.new({
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parents: 3097
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146 {
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parents: 3097
diff changeset
147 type = "hidden", name = "FORM_TYPE",
4560
724003f24308 Back out 82689acd1294 (non-standard buttons)
Kim Alvefur <zash@zash.se>
parents: 3443
diff changeset
148 value = "xmpp:prosody.im/community/mod_slack_webhooks#buttons",
3146
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parents: 3097
diff changeset
149 },
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Kim Alvefur <zash@zash.se>
parents: 3097
diff changeset
150 {
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Kim Alvefur <zash@zash.se>
parents: 3097
diff changeset
151 type = "hidden", name = "callback_id",
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Kim Alvefur <zash@zash.se>
parents: 3097
diff changeset
152 value = attachment.callback_id,
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Kim Alvefur <zash@zash.se>
parents: 3097
diff changeset
153 },
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Kim Alvefur <zash@zash.se>
parents: 3097
diff changeset
154 {
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Kim Alvefur <zash@zash.se>
parents: 3097
diff changeset
155 type = "hidden", name = "button_name",
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Kim Alvefur <zash@zash.se>
parents: 3097
diff changeset
156 value = button_name,
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Kim Alvefur <zash@zash.se>
parents: 3097
diff changeset
157 },
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Kim Alvefur <zash@zash.se>
parents: 3097
diff changeset
158 {
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Kim Alvefur <zash@zash.se>
parents: 3097
diff changeset
159 type = "list-single", name = "buttons",
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parents: 3097
diff changeset
160 value = "", -- FIXME util.dataforms can't do options without a value
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Kim Alvefur <zash@zash.se>
parents: 3097
diff changeset
161 options = buttons;
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Kim Alvefur <zash@zash.se>
parents: 3097
diff changeset
162 }
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Kim Alvefur <zash@zash.se>
parents: 3097
diff changeset
163 }):form());
662423cea3f4 mod_slack_webhooks: Add support for buttons
Kim Alvefur <zash@zash.se>
parents: 3097
diff changeset
164 break;
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Kim Alvefur <zash@zash.se>
parents: 3097
diff changeset
165 end
662423cea3f4 mod_slack_webhooks: Add support for buttons
Kim Alvefur <zash@zash.se>
parents: 3097
diff changeset
166 end
662423cea3f4 mod_slack_webhooks: Add support for buttons
Kim Alvefur <zash@zash.se>
parents: 3097
diff changeset
167 end
662423cea3f4 mod_slack_webhooks: Add support for buttons
Kim Alvefur <zash@zash.se>
parents: 3097
diff changeset
168 end
3000
02fc3b64cbb7 Initial commit of mod_slack_webhooks.
Nathan Whitehorn <nwhitehorn@physics.ucla.edu>
parents:
diff changeset
169 dest_room:broadcast_message(message, true);
02fc3b64cbb7 Initial commit of mod_slack_webhooks.
Nathan Whitehorn <nwhitehorn@physics.ucla.edu>
parents:
diff changeset
170 return 201;
02fc3b64cbb7 Initial commit of mod_slack_webhooks.
Nathan Whitehorn <nwhitehorn@physics.ucla.edu>
parents:
diff changeset
171 end
02fc3b64cbb7 Initial commit of mod_slack_webhooks.
Nathan Whitehorn <nwhitehorn@physics.ucla.edu>
parents:
diff changeset
172
02fc3b64cbb7 Initial commit of mod_slack_webhooks.
Nathan Whitehorn <nwhitehorn@physics.ucla.edu>
parents:
diff changeset
173 module:provides("http", {
02fc3b64cbb7 Initial commit of mod_slack_webhooks.
Nathan Whitehorn <nwhitehorn@physics.ucla.edu>
parents:
diff changeset
174 default_path = listen_path;
02fc3b64cbb7 Initial commit of mod_slack_webhooks.
Nathan Whitehorn <nwhitehorn@physics.ucla.edu>
parents:
diff changeset
175 route = {
02fc3b64cbb7 Initial commit of mod_slack_webhooks.
Nathan Whitehorn <nwhitehorn@physics.ucla.edu>
parents:
diff changeset
176 ["POST /*"] = route_post(handle_post);
02fc3b64cbb7 Initial commit of mod_slack_webhooks.
Nathan Whitehorn <nwhitehorn@physics.ucla.edu>
parents:
diff changeset
177 OPTIONS = function(e)
02fc3b64cbb7 Initial commit of mod_slack_webhooks.
Nathan Whitehorn <nwhitehorn@physics.ucla.edu>
parents:
diff changeset
178 local headers = e.response.headers;
02fc3b64cbb7 Initial commit of mod_slack_webhooks.
Nathan Whitehorn <nwhitehorn@physics.ucla.edu>
parents:
diff changeset
179 headers.allow = "POST";
02fc3b64cbb7 Initial commit of mod_slack_webhooks.
Nathan Whitehorn <nwhitehorn@physics.ucla.edu>
parents:
diff changeset
180 headers.accept = "application/x-www-form-urlencoded, application/json";
02fc3b64cbb7 Initial commit of mod_slack_webhooks.
Nathan Whitehorn <nwhitehorn@physics.ucla.edu>
parents:
diff changeset
181 return 200;
02fc3b64cbb7 Initial commit of mod_slack_webhooks.
Nathan Whitehorn <nwhitehorn@physics.ucla.edu>
parents:
diff changeset
182 end;
02fc3b64cbb7 Initial commit of mod_slack_webhooks.
Nathan Whitehorn <nwhitehorn@physics.ucla.edu>
parents:
diff changeset
183 }
02fc3b64cbb7 Initial commit of mod_slack_webhooks.
Nathan Whitehorn <nwhitehorn@physics.ucla.edu>
parents:
diff changeset
184 });
02fc3b64cbb7 Initial commit of mod_slack_webhooks.
Nathan Whitehorn <nwhitehorn@physics.ucla.edu>
parents:
diff changeset
185