plugins/adhoc/adhoc.lib.lua

   1 -- Copyright (C) 2009-2010 Florian Zeitz
   2 --
   3 -- This file is MIT/X11 licensed. Please see the
   4 -- COPYING file in the source package for more information.
   5 --
   6
   7 local st, uuid = require "util.stanza", require "util.uuid";
   8
   9 local xmlns_cmd = "http://jabber.org/protocol/commands";
  10
  11 local states = {}
  12
  13 local _M = {};
  14
  15 local function _cmdtag(desc, status, sessionid, action)
  16         local cmd = st.stanza("command", { xmlns = xmlns_cmd, node = desc.node, status = status });
  17         if sessionid then cmd.attr.sessionid = sessionid; end
  18         if action then cmd.attr.action = action; end
  19
  20         return cmd;
  21 end
  22
  23 function _M.new(name, node, handler, permission)
  24         return { name = name, node = node, handler = handler, cmdtag = _cmdtag, permission = (permission or "user") };
  25 end
  26
  27 function _M.handle_cmd(command, origin, stanza)
  28         local cmdtag = stanza.tags[1]
  29         local sessionid = cmdtag.attr.sessionid or uuid.generate();
  30         local dataIn = {
  31                 to = stanza.attr.to;
  32                 from = stanza.attr.from;
  33                 action = cmdtag.attr.action or "execute";
  34                 form = cmdtag:get_child("x", "jabber:x:data");
  35         };
  36
  37         local data, state = command:handler(dataIn, states[sessionid]);
  38         states[sessionid] = state;
  39         local cmdreply;
  40         if data.status == "completed" then
  41                 states[sessionid] = nil;
  42                 cmdreply = command:cmdtag("completed", sessionid);
  43         elseif data.status == "canceled" then
  44                 states[sessionid] = nil;
  45                 cmdreply = command:cmdtag("canceled", sessionid);
  46         elseif data.status == "error" then
  47                 states[sessionid] = nil;
  48                 local reply = st.error_reply(stanza, data.error.type, data.error.condition, data.error.message);
  49                 origin.send(reply);
  50                 return true;
  51         else
  52                 cmdreply = command:cmdtag("executing", sessionid);
  53                 data.actions = data.actions or { "complete" };
  54         end
  55
  56         for name, content in pairs(data) do
  57                 if name == "info" then
  58                         cmdreply:tag("note", {type="info"}):text(content):up();
  59                 elseif name == "warn" then
  60                         cmdreply:tag("note", {type="warn"}):text(content):up();
  61                 elseif name == "error" then
  62                         cmdreply:tag("note", {type="error"}):text(content.message):up();
  63                 elseif name == "actions" then
  64                         local actions = st.stanza("actions", { execute = content.default });
  65                         for _, action in ipairs(content) do
  66                                 if (action == "prev") or (action == "next") or (action == "complete") then
  67                                         actions:tag(action):up();
  68                                 else
  69                                         module:log("error", "Command %q at node %q provided an invalid action %q",
  70                                                 command.name, command.node, action);
  71                                 end
  72                         end
  73                         cmdreply:add_child(actions);
  74                 elseif name == "form" then
  75                         cmdreply:add_child((content.layout or content):form(content.values));
  76                 elseif name == "result" then
  77                         cmdreply:add_child((content.layout or content):form(content.values, "result"));
  78                 elseif name == "other" then
  79                         cmdreply:add_child(content);
  80                 end
  81         end
  82         local reply = st.reply(stanza);
  83         reply:add_child(cmdreply);
  84         origin.send(reply);
  85
  86         return true;
  87 end
  88
  89 return _M;