Mercurial > prosody-modules

annotate mod_slack_webhooks/mod_slack_webhooks.lua @ 3146:662423cea3f4

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mod_slack_webhooks: Add support for buttons
author Kim Alvefur <zash@zash.se>
date Sun, 03 Jun 2018 02:02:51 +0200
parents c7f4e3987ed0
children 82689acd1294
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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 host_session = prosody.hosts[module.host];
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10 local msg = require "util.stanza".message;
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11 local jid = require "util.jid";
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12 local now = require "util.datetime".datetime;
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13 local json = require "util.json"
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14 local formdecode = require "net.http".formdecode;
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15 local http = require "net.http";
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16 local dataform = require "util.dataforms";
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17
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18 local function get_room_from_jid(mod_muc, room_jid)
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19 if mod_muc.get_room_from_jid then
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20 return mod_muc.get_room_from_jid(room_jid);
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21 elseif mod_muc.rooms then
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22 return mod_muc.rooms[room_jid]; -- COMPAT 0.9, 0.10
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23 end
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24 end
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25
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26 local routing = module:get_option("outgoing_webhook_routing") or {};
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27 local listen_path = module:get_option("incoming_webhook_path") or "/webhook";
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28 local default_from_nick = module:get_option("incoming_webhook_default_nick") or "Bot";
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29
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30 function postcallback(_, code)
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31 module:log("debug", "HTTP result %d", code)
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32 end
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33
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34 function check_message(data)
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35 local stanza = data.stanza;
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36 local mod_muc = host_session.muc;
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37 if not mod_muc then return; end
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38
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39 local this_room = get_room_from_jid(mod_muc, stanza.attr.to);
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40 if not this_room then return; end -- no such room
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41
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42 local from_room_jid = this_room._jid_nick[stanza.attr.from];
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43 if not from_room_jid then return; end -- no such nick
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44
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45 local from_room, from_host, from_nick = jid.split(from_room_jid);
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46
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47 local body = stanza:get_child("body");
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48 if not body then return; end -- No body, like topic changes
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49 body = body and body:get_text(); -- I feel like I want to do `or ""` there :/
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50
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51 if not routing[from_room] then
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52 return;
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53 end
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54
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55 local json_out = {
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56 channel_name = from_room,
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57 timestamp = now(),
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58 text = body,
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59 team_domain = from_host,
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60 user_name = from_nick,
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61 };
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62 local stanzaid = stanza:get_child("id");
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63 if stanzaid and string.sub(stanzaid,1,string.len("webhookbot"))=="webhookbot" then
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64 json_out["bot_id"] = "webhookbot";
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65 end
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66
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67 json_out = json.encode(json_out)
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68 local url = routing[from_room];
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69 module:log("debug", "message from %s in %s to %s", from_nick, from_room, url);
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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 local mod_muc = host_session.muc;
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82 if not get_room_from_jid(mod_muc, bare_room) then
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83 module:log("warn", "mod_slack_webhook: invalid JID: %s", bare_room);
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84 return 404;
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85 end
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86 -- Check secret?
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87 return f(event, path)
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88 end
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89 end
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90
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91 local function handle_post(event, path)
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92 local mod_muc = host_session.muc;
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93 local request = event.request;
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94 local headers = request.headers;
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95
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96 local body_type = headers.content_type;
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97 local post_body;
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98 if body_type == "application/x-www-form-urlencoded" then
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99 post_body = formdecode(request.body);
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100 elseif body_type == "application/json" then
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101 post_body = json.decode(request.body)
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102 if not post_body then
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103 return 420;
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104 end
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105 else
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106 return 422;
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107 end
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108 local bare_room = jid.join(path, module.host);
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109 local dest_room = get_room_from_jid(mod_muc, bare_room);
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110 local from_nick = default_from_nick;
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111 if post_body["username"] then
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112 from_nick = post_body["username"];
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113 end
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114 local sender = jid.join(path, module.host, from_nick);
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115 module:log("debug", "message to %s from %s", bare_room, sender);
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116 module:log("debug", "body: %s", post_body["text"]);
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117 local message = msg({ to = bare_room, from = sender, type = "groupchat", id="webhookbot" .. now()},post_body["text"]);
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118
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119 if type(post_body["attachments"]) == "table" then -- Buttons?
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120 -- luacheck: ignore 631
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121 -- defensive against JSON having whatever data in it, enjoy
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122
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123 for _, attachment in ipairs(post_body["attachments"]) do
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124 if type(attachment) == "table" and type(attachment.actions) == "table" and type(attachment.callback_id) == "string" then
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125 local buttons = {};
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126 local button_name;
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127 for _, action in ipairs(attachment.actions) do
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128 if type(attachment.text) == "string" then
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129 buttons.label = attachment.text;
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130 end
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131 if type(action) == "table" and action.type == "button" and type(action.name) == "string" and type(action.value) == "string" then
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132 if not button_name then
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133 button_name = action.name;
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134 end
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parents: 3097
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135 if button_name == action.name then
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136 local button = {
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137 value = action.value;
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parents: 3097
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138 };
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parents: 3097
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139 if type(action.text) == "string" then
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140 button.label = action.text;
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141 end
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142 table.insert(buttons, button);
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143 end
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144 end
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Kim Alvefur <zash@zash.se>
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145 end
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Kim Alvefur <zash@zash.se>
parents: 3097
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146 if button_name then
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147 message:add_direct_child(dataform.new({
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148 {
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149 type = "hidden", name = "FORM_TYPE",
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150 value = "xmpp:prosody.im/community/mod_slack_webhooks#buttons",
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151 },
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parents: 3097
diff changeset
152 {
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153 type = "hidden", name = "callback_id",
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154 value = attachment.callback_id,
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155 },
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parents: 3097
diff changeset
156 {
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157 type = "hidden", name = "button_name",
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158 value = button_name,
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159 },
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parents: 3097
diff changeset
160 {
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161 type = "list-single", name = "buttons",
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parents: 3097
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162 value = "", -- FIXME util.dataforms can't do options without a value
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163 options = buttons;
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parents: 3097
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164 }
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Kim Alvefur <zash@zash.se>
parents: 3097
diff changeset
165 }):form());
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parents: 3097
diff changeset
166 break;
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parents: 3097
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167 end
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Kim Alvefur <zash@zash.se>
parents: 3097
diff changeset
168 end
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Kim Alvefur <zash@zash.se>
parents: 3097
diff changeset
169 end
662423cea3f4 mod_slack_webhooks: Add support for buttons
Kim Alvefur <zash@zash.se>
parents: 3097
diff changeset
170 end
3000
02fc3b64cbb7 Initial commit of mod_slack_webhooks.
Nathan Whitehorn <nwhitehorn@physics.ucla.edu>
parents:
diff changeset
171 dest_room:broadcast_message(message, true);
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Nathan Whitehorn <nwhitehorn@physics.ucla.edu>
parents:
diff changeset
172 return 201;
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Nathan Whitehorn <nwhitehorn@physics.ucla.edu>
parents:
diff changeset
173 end
02fc3b64cbb7 Initial commit of mod_slack_webhooks.
Nathan Whitehorn <nwhitehorn@physics.ucla.edu>
parents:
diff changeset
174
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Nathan Whitehorn <nwhitehorn@physics.ucla.edu>
parents:
diff changeset
175 module:provides("http", {
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parents:
diff changeset
176 default_path = listen_path;
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Nathan Whitehorn <nwhitehorn@physics.ucla.edu>
parents:
diff changeset
177 route = {
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Nathan Whitehorn <nwhitehorn@physics.ucla.edu>
parents:
diff changeset
178 ["POST /*"] = route_post(handle_post);
02fc3b64cbb7 Initial commit of mod_slack_webhooks.
Nathan Whitehorn <nwhitehorn@physics.ucla.edu>
parents:
diff changeset
179 OPTIONS = function(e)
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Nathan Whitehorn <nwhitehorn@physics.ucla.edu>
parents:
diff changeset
180 local headers = e.response.headers;
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Nathan Whitehorn <nwhitehorn@physics.ucla.edu>
parents:
diff changeset
181 headers.allow = "POST";
02fc3b64cbb7 Initial commit of mod_slack_webhooks.
Nathan Whitehorn <nwhitehorn@physics.ucla.edu>
parents:
diff changeset
182 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
183 return 200;
02fc3b64cbb7 Initial commit of mod_slack_webhooks.
Nathan Whitehorn <nwhitehorn@physics.ucla.edu>
parents:
diff changeset
184 end;
02fc3b64cbb7 Initial commit of mod_slack_webhooks.
Nathan Whitehorn <nwhitehorn@physics.ucla.edu>
parents:
diff changeset
185 }
02fc3b64cbb7 Initial commit of mod_slack_webhooks.
Nathan Whitehorn <nwhitehorn@physics.ucla.edu>
parents:
diff changeset
186 });
02fc3b64cbb7 Initial commit of mod_slack_webhooks.
Nathan Whitehorn <nwhitehorn@physics.ucla.edu>
parents:
diff changeset
187