mod_vcard_command: a simplistic way to get and set vcard data for registered users
Use "prosodyctl get user@example.com" to print the XML to stdout, and
"prosodyctl set user@example.com /file/name" to set the vcard info from
an xml file.
module:set_global();
local traceback = require "util.debug".traceback;
require"util.signal".signal(module:get_option_string(module.name, "SIGUSR1"), function ()
module:log("info", "Received SIGUSR1, writing traceback");
local f = io.open(prosody.paths.data.."/traceback.txt", "a+");
f:write(traceback(), "\n");
f:close();
end);