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 sessionid = stanza.tags[1].attr.sessionid or uuid.generate();
  29         local dataIn = {};
  30         dataIn.to = stanza.attr.to;
  31         dataIn.from = stanza.attr.from;
  32         dataIn.action = stanza.tags[1].attr.action or "execute";
  33         dataIn.form = stanza.tags[1]:child_with_ns("jabber:x:data");
  34
  35         local data, state = command:handler(dataIn, states[sessionid]);
  36         states[sessionid] = state;
  37         local cmdtag;
  38         if data.status == "completed" then
  39                 states[sessionid] = nil;
  40                 cmdtag = command:cmdtag("completed", sessionid);
  41         elseif data.status == "canceled" then
  42                 states[sessionid] = nil;
  43                 cmdtag = command:cmdtag("canceled", sessionid);
  44         elseif data.status == "error" then
  45                 states[sessionid] = nil;
  46                 local reply = st.error_reply(stanza, data.error.type, data.error.condition, data.error.message);
  47                 origin.send(reply);
  48                 return true;
  49         else
  50                 cmdtag = command:cmdtag("executing", sessionid);
  51                 data.actions = data.actions or { "complete" };
  52         end
  53
  54         for name, content in pairs(data) do
  55                 if name == "info" then
  56                         cmdtag:tag("note", {type="info"}):text(content):up();
  57                 elseif name == "warn" then
  58                         cmdtag:tag("note", {type="warn"}):text(content):up();
  59                 elseif name == "error" then
  60                         cmdtag:tag("note", {type="error"}):text(content.message):up();
  61                 elseif name == "actions" then
  62                         local actions = st.stanza("actions", { execute = content.default });
  63                         for _, action in ipairs(content) do
  64                                 if (action == "prev") or (action == "next") or (action == "complete") then
  65                                         actions:tag(action):up();
  66                                 else
  67                                         module:log("error", "Command %q at node %q provided an invalid action %q",
  68                                                 command.name, command.node, action);
  69                                 end
  70                         end
  71                         cmdtag:add_child(actions);
  72                 elseif name == "form" then
  73                         cmdtag:add_child((content.layout or content):form(content.values));
  74                 elseif name == "result" then
  75                         cmdtag:add_child((content.layout or content):form(content.values, "result"));
  76                 elseif name == "other" then
  77                         cmdtag:add_child(content);
  78                 end
  79         end
  80         local reply = st.reply(stanza);
  81         reply:add_child(cmdtag);
  82         origin.send(reply);
  83
  84         return true;
  85 end
  86
  87 return _M;