#!/usr/bin/env lua

-- Prosody IM

-- Copyright (C) 2008-2010 Matthew Wild

-- Copyright (C) 2008-2010 Waqas Hussain

--

-- This project is MIT/X11 licensed. Please see the

-- COPYING file in the source package for more information.

--

-- prosodyctl - command-line controller for Prosody XMPP server

-- Will be modified by configure script if run --

CFG_SOURCEDIR=CFG_SOURCEDIR or os.getenv("PROSODY_SRCDIR");

CFG_CONFIGDIR=CFG_CONFIGDIR or os.getenv("PROSODY_CFGDIR");

CFG_PLUGINDIR=CFG_PLUGINDIR or os.getenv("PROSODY_PLUGINDIR");

CFG_DATADIR=CFG_DATADIR or os.getenv("PROSODY_DATADIR");

-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

local function is_relative(path)

	local path_sep = package.config:sub(1,1);

        return ((path_sep == "/" and path:sub(1,1) ~= "/")

	or (path_sep == "\\" and (path:sub(1,1) ~= "/" and path:sub(2,3) ~= ":\\")))

end

-- Tell Lua where to find our libraries

if CFG_SOURCEDIR then

	local function filter_relative_paths(path)

		if is_relative(path) then return ""; end

	end

	local function sanitise_paths(paths)

		return (paths:gsub("[^;]+;?", filter_relative_paths):gsub(";;+", ";"));

	end

	package.path = sanitise_paths(CFG_SOURCEDIR.."/?.lua;"..package.path);

	package.cpath = sanitise_paths(CFG_SOURCEDIR.."/?.so;"..package.cpath);

end

-- Substitute ~ with path to home directory in data path

if CFG_DATADIR then

	if os.getenv("HOME") then

		CFG_DATADIR = CFG_DATADIR:gsub("^~", os.getenv("HOME"));

	end

end

-----------

local startup = require "util.startup";

startup.prosodyctl();

-----------

local error_messages = setmetatable({

		["invalid-username"] = "The given username is invalid in a Jabber ID";

		["invalid-hostname"] = "The given hostname is invalid";

		["no-password"] = "No password was supplied";

		["no-such-user"] = "The given user does not exist on the server";

		["no-such-host"] = "The given hostname does not exist in the config";

		["unable-to-save-data"] = "Unable to store, perhaps you don't have permission?";

		["no-pidfile"] = "There is no 'pidfile' option in the configuration file, see https://prosody.im/doc/prosodyctl#pidfile for help";

		["invalid-pidfile"] = "The 'pidfile' option in the configuration file is not a string, see https://prosody.im/doc/prosodyctl#pidfile for help";

		["no-posix"] = "The mod_posix module is not enabled in the Prosody config file, see https://prosody.im/doc/prosodyctl for more info";

		["no-such-method"] = "This module has no commands";

		["not-running"] = "Prosody is not running";

		}, { __index = function (_,k) return "Error: "..(tostring(k):gsub("%-", " "):gsub("^.", string.upper)); end });

local configmanager = require "core.configmanager";

local modulemanager = require "core.modulemanager"

local prosodyctl = require "util.prosodyctl"

local socket = require "socket"

local dependencies = require "util.dependencies";

-----------------------

local show_message, show_warning = prosodyctl.show_message, prosodyctl.show_warning;

local show_usage = prosodyctl.show_usage;

local show_yesno = prosodyctl.show_yesno;

local show_prompt = prosodyctl.show_prompt;

local read_password = prosodyctl.read_password;

local jid_split = require "util.jid".prepped_split;

local prosodyctl_timeout = (configmanager.get("*", "prosodyctl_timeout") or 5) * 2;

-----------------------

local commands = {};

local command = table.remove(arg, 1);

-- This function receives no arguments. It clones all the plugins from prosody's plugin repository

function commands.get_modules(arg)

  if arg[1] == "--help" then

		show_usage([[get_modules]], [[Downloads all available modules]]);

    return 1

  end

  if os.execute '[ -e "./downloaded_modules" ]' then

    print("The modules have already been imported")

    print("Do you want to re-import?(Y/N)")

    local answer = io.read()

    if answer == "Y" then

      print("Deleting previous imports")

      os.execute("rm -rf downloaded_modules")

      print("Downloading plugins")

      os.execute("hg clone https://hg.prosody.im/prosody-modules/ downloaded_modules")

      print("Done!")

      return 0

    else

      print("We keep what we have then!")

      return 0

    end

  else

    print("Getting all the available modules")

    os.execute("hg clone https://hg.prosody.im/prosody-modules/ downloaded_modules")

    print("Done!")

    return 0

  end

end

-- Function to write rockspecs from a module at working_directory/downloaded_modules

-- Receives the module's name as an argument

-- The rockspec is saved inside its module's folder

function commands.write_rockspec(arg)

  if arg[1] == "--help" then

    show_usage([[write_rockspec]], [[Picks up a module and writes an initial rockspec]]);

    return 1

  end

  print("Writing rockspec for "..arg[1])

  os.execute("luarocks write_rockspec "..arg[1].." ./downloaded_modules/"..arg[1])

  print("Rockspec created! Moving it into the ./downloaded_modules/"..arg[1].." folder")

  os.execute("mv "..arg[1].."-scm-1.rockspec ./downloaded_modules/"..arg[1])

  print("Done!")

  return 0

end

-- Command to install a rockspec with local sources

-- The module is installed at the plugins folder

function commands.make(arg)

  if arg[1] == "--help" then

    show_usage([[make]], [[Installs a module with sources available locally]]);

    return 1

  end

  os.execute("cd downloaded_modules/"..arg[1].." && luarocks --tree='../../plugins' make "..arg[1].."-scm-1.rockspec")

  return 0

end

-- Command to remove a rockspec

-- Receives as an argument the name of the plugin to be removed from the plugins folder

function commands.remove(arg)

  if arg[1] == "--help" then

    show_usage([[make]], [[Removes a module installed in the wroking directory's plugins folder]]);

    return 1

  end

  print("Removing "..arg[1].." from ./plugins")

  os.execute("luarocks --tree='./plugins' remove "..arg[1])

  print("Done!")

  return 0

end

function commands.list(arg)

  if not arg[1] or arg[1] == "--help" then

		show_usage([[list]], [[Shows installed rocks]]);

		return 1;

	end

  -- Need to think about the case with many flags

  local flag = "--tree="

  -- I'm considering the flag is the first, but there can be many flags

  if arg[1] and arg[1]:sub(1, #flag) == flag then

    local dir = arg[1]:match("=(.+)$")

    -- These extra double brackets allow us to correctly process names with spaces

    os.execute("luarocks list --tree=".."'"..dir.."'")

    return 0;

  else

    os.execute("luarocks list --tree="..prosody.paths.data.."/rocks")

    return 0;

  end

end

function commands.admin_add(arg)

  prosodyctl.admin_operation("add ", arg)

  return 0;

end

function commands.admin_remove(arg)

  prosodyctl.admin_operation("remove ", arg)

  return 0;

end

function commands.enabled_plugins(arg)

  if arg[1] == "--help" then

    show_usage([[enabled_plugins]], [[Shows plugins currently enabled on prosody]]);

    return 1;

	end

	for module in modulemanager.get_modules_for_host() do

		show_warning("%s", module)

	end

end

function commands.local_plugins(arg)

  if arg[1] == "--help" then

    show_usage([[local_plugins]], [[Shows plugins currently available for prosody, locally]]);

    return 1;

	end

	local directory = "./plugins"

    local i, t, popen = 0, {}, io.popen

    local pfile = popen('ls -a "'..directory..'"')

    for filename in pfile:lines() do

		if filename == "." or filename == ".." then

			i = i + 1

		else

			i = i + 1

			t[i] = filename

			show_warning("%s", t[i])

        end

    end

    pfile:close()

    return 0

end

function commands.adduser(arg)

	if not arg[1] or arg[1] == "--help" then

		show_usage([[adduser JID]], [[Create the specified user account in Prosody]]);

		return 1;

	end

	local user, host = jid_split(arg[1]);

	if not user and host then

		show_message [[Failed to understand JID, please supply the JID you want to create]]

		show_usage [[adduser user@host]]

		return 1;

	end

	if not host then

		show_message [[Please specify a JID, including a host. e.g. alice@example.com]];

		return 1;

	end

	if not prosody.hosts[host] then

		show_warning("The host '%s' is not listed in the configuration file (or is not enabled).", host)

		show_warning("The user will not be able to log in until this is changed.");

		prosody.hosts[host] = startup.make_host(host); --luacheck: ignore 122

	end

	if prosodyctl.user_exists{ user = user, host = host } then

		show_message [[That user already exists]];

		return 1;

	end

	local password = read_password();

	if not password then return 1; end

	local ok, msg = prosodyctl.adduser { user = user, host = host, password = password };

	if ok then return 0; end

	show_message(msg)

	return 1;

end

function commands.passwd(arg)

	if not arg[1] or arg[1] == "--help" then

		show_usage([[passwd JID]], [[Set the password for the specified user account in Prosody]]);

		return 1;

	end

	local user, host = jid_split(arg[1]);

	if not user and host then

		show_message [[Failed to understand JID, please supply the JID you want to set the password for]]

		show_usage [[passwd user@host]]

		return 1;

	end

	if not host then

		show_message [[Please specify a JID, including a host. e.g. alice@example.com]];

		return 1;

	end

	if not prosody.hosts[host] then

		show_warning("The host '%s' is not listed in the configuration file (or is not enabled).", host)

		show_warning("The user will not be able to log in until this is changed.");

		prosody.hosts[host] = startup.make_host(host); --luacheck: ignore 122

	end

	if not prosodyctl.user_exists { user = user, host = host } then

		show_message [[That user does not exist, use prosodyctl adduser to create a new user]]

		return 1;

	end

	local password = read_password();

	if not password then return 1; end

	local ok, msg = prosodyctl.passwd { user = user, host = host, password = password };

	if ok then return 0; end

	show_message(error_messages[msg])

	return 1;

end

function commands.deluser(arg)

	if not arg[1] or arg[1] == "--help" then

		show_usage([[deluser JID]], [[Permanently remove the specified user account from Prosody]]);

		return 1;

	end

	local user, host = jid_split(arg[1]);

	if not user and host then

		show_message [[Failed to understand JID, please supply the JID to the user account you want to delete]]

		show_usage [[deluser user@host]]

		return 1;

	end

	if not host then

		show_message [[Please specify a JID, including a host. e.g. alice@example.com]];

		return 1;

	end

	if not prosody.hosts[host] then

		show_warning("The host '%s' is not listed in the configuration file (or is not enabled).", host)

		prosody.hosts[host] = startup.make_host(host); --luacheck: ignore 122

	end

	if not prosodyctl.user_exists { user = user, host = host } then

		show_message [[That user does not exist on this server]]

		return 1;

	end

	local ok, msg = prosodyctl.deluser { user = user, host = host };

	if ok then return 0; end

	show_message(error_messages[msg])

	return 1;

end

function commands.start(arg)

	if arg[1] == "--help" then

		show_usage([[start]], [[Start Prosody]]);

		return 1;

	end

	local ok, ret = prosodyctl.isrunning();

	if not ok then

		show_message(error_messages[ret]);

		return 1;

	end

	if ret then

		--luacheck: ignore 421/ret

		local ok, ret = prosodyctl.getpid();

		if not ok then

			show_message("Couldn't get running Prosody's PID");

			show_message(error_messages[ret]);

			return 1;

		end

		show_message("Prosody is already running with PID %s", ret or "(unknown)");

		return 1;

	end

	--luacheck: ignore 411/ret

	local ok, ret = prosodyctl.start(prosody.paths.source, arg[-1]);

	if ok then

		local daemonize = configmanager.get("*", "daemonize");

		if daemonize == nil then

			daemonize = prosody.installed;

		end

		if daemonize then

			local i=1;

			while true do

				local ok, running = prosodyctl.isrunning();

				if ok and running then

					break;

				elseif i == 5 then

					show_message("Still waiting...");

				elseif i >= prosodyctl_timeout then

					show_message("Prosody is still not running. Please give it some time or check your log files for errors.");

					return 2;

				end

				socket.sleep(0.5);

				i = i + 1;

			end

			show_message("Started");

		end

		return 0;

	end