#!/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.

--

package.path = package.path ..";../?.lua";

local my_name = arg[0];

if my_name:match("[/\\]") then

	package.path = package.path..";"..my_name:gsub("[^/\\]+$", "../?.lua");

	package.path = package.path..";"..my_name:gsub("[^/\\]+$", "?.lua");

	package.cpath = package.cpath..";"..my_name:gsub("[^/\\]+$", "../?.so");

end

local erlparse = require "erlparse";

prosody = {};

package.loaded["util.logger"] = {init = function() return function() end; end}

local serialize = require "util.serialization".serialize;

local st = require "util.stanza";

local dm = require "util.datamanager"

dm.set_data_path("data");

function build_stanza(tuple, stanza)

	assert(type(tuple) == "table", "XML node is of unexpected type: "..type(tuple));

	if tuple[1] == "xmlelement" or tuple[1] == "xmlel" then

		assert(type(tuple[2]) == "string", "element name has type: "..type(tuple[2]));

		assert(type(tuple[3]) == "table", "element attribute array has type: "..type(tuple[3]));

		assert(type(tuple[4]) == "table", "element children array has type: "..type(tuple[4]));

		local name = tuple[2];

		local attr = {};

		for _, a in ipairs(tuple[3]) do

			if type(a[1]) == "string" and type(a[2]) == "string" then attr[a[1]] = a[2]; end

		end

		local up;

		if stanza then stanza:tag(name, attr); up = true; else stanza = st.stanza(name, attr); end

		for _, a in ipairs(tuple[4]) do build_stanza(a, stanza); end

		if up then stanza:up(); else return stanza end

	elseif tuple[1] == "xmlcdata" then

		if type(tuple[2]) ~= "table" then

			assert(type(tuple[2]) == "string", "XML CDATA has unexpected type: "..type(tuple[2]));

			stanza:text(tuple[2]);

		end -- else it's [], i.e., the null value, used for the empty string

	else

		error("unknown element type: "..serialize(tuple));

	end

end

function build_time(tuple)

	local Megaseconds,Seconds,Microseconds = unpack(tuple);

	return Megaseconds * 1000000 + Seconds;

end

function build_jid(tuple, full)

	local node, jid, resource = tuple[1], tuple[2], tuple[3]

	if type(node) == "string" and node ~= "" then

		jid = tuple[1] .. "@" .. jid;

	end

	if full and type(resource) == "string" and resource ~= "" then

		jid = jid .. "/" .. resource;

	end

	return jid;

end

function vcard(node, host, stanza)

	local ret, err = dm.store(node, host, "vcard", st.preserialize(stanza));

	print("["..(err or "success").."] vCard: "..node.."@"..host);

end

function password(node, host, password)

	local data = {};

	if type(password) == "string" then

		data.password = password;

	elseif type(password) == "table" and password[1] == "scram" then

		local unb64 = require"mime".unb64;

		local function hex(s)

			return s:gsub(".", function (c)

				return ("%02x"):format(c:byte());

			end);

		end

		data.stored_key = hex(unb64(password[2]));

		data.server_key = hex(unb64(password[3]));

		data.salt = unb64(password[4]);

		if type(password[6]) == "number" then

			assert(password[5] == "sha", "unexpected passwd entry hash: "..tostring(password[5]));

			data.iteration_count = password[6];

		else

			assert(type(password[5]) == "number", "unexpected passwd entry in source data");

			data.iteration_count = password[5];

		end

	end

	local ret, err = dm.store(node, host, "accounts", data);

	print("["..(err or "success").."] accounts: "..node.."@"..host);

end

function roster(node, host, jid, item)

	local roster = dm.load(node, host, "roster") or {};

	roster[jid] = item;

	local ret, err = dm.store(node, host, "roster", roster);

	print("["..(err or "success").."] roster: " ..node.."@"..host.." - "..jid);

end

function roster_pending(node, host, jid)

	local roster = dm.load(node, host, "roster") or {};

	roster.pending = roster.pending or {};

	roster.pending[jid] = true;

	local ret, err = dm.store(node, host, "roster", roster);

	print("["..(err or "success").."] roster: " ..node.."@"..host.." - "..jid);

end

function private_storage(node, host, xmlns, stanza)

	local private = dm.load(node, host, "private") or {};

	private[stanza.name..":"..xmlns] = st.preserialize(stanza);

	local ret, err = dm.store(node, host, "private", private);

	print("["..(err or "success").."] private: " ..node.."@"..host.." - "..xmlns);

end

function offline_msg(node, host, t, stanza)

	stanza.attr.stamp = os.date("!%Y-%m-%dT%H:%M:%SZ", t);

	stanza.attr.stamp_legacy = os.date("!%Y%m%dT%H:%M:%S", t);

	local ret, err = dm.list_append(node, host, "offline", st.preserialize(stanza));

	print("["..(err or "success").."] offline: " ..node.."@"..host.." - "..os.date("!%Y-%m-%dT%H:%M:%SZ", t));

end

function privacy(node, host, default, lists)

	local privacy = { lists = {} };

	local count = 0;

	if default then privacy.default = default; end

	for _, inlist in ipairs(lists) do

		local name, items = inlist[1], inlist[2];

		local list = { name = name; items = {}; };

		local orders = {};

		for _, item in pairs(items) do

			repeat

				if item[1] ~= "listitem" then print("[error] privacy: unhandled item: "..tostring(item[1])); break; end

				local _type, value = item[2], item[3];

				if _type == "jid" then

					if type(value) ~= "table" then print("[error] privacy: jid value is not valid: "..tostring(value)); break; end

					local _node, _host, _resource = value[1], value[2], value[3];

					value = build_jid(value, true)

				elseif _type == "none" then

					_type = nil;

					value = nil;

				elseif _type == "group" then

					if type(value) ~= "string" then print("[error] privacy: group value is not string: "..tostring(value)); break; end

				elseif _type == "subscription" then

					if value~="both" and value~="from" and value~="to" and value~="none" then

						print("[error] privacy: subscription value is invalid: "..tostring(value)); break;

					end

				else print("[error] privacy: invalid item type: "..tostring(_type)); break; end

				local action = item[4];

				if action ~= "allow" and action ~= "deny" then print("[error] privacy: unhandled action: "..tostring(action)); break; end

				local order = item[5];

				if type(order) ~= "number" or order<0 then print("[error] privacy: order is not numeric: "..tostring(order)); break; end

				if orders[order] then print("[error] privacy: duplicate order value: "..tostring(order)); break; end

				orders[order] = true;

				local match_all = item[6];

				local match_iq = item[7];

				local match_message = item[8];

				local match_presence_in = item[9];

				local match_presence_out = item[10];

				list.items[#list.items+1] = {

					type = _type;

					value = value;

					action = action;

					order = order;

					message = match_message == "true";

					iq = match_iq == "true";

					["presence-in"] = match_presence_in == "true";

					["presence-out"] = match_presence_out == "true";

				};

			until true;

		end

		table.sort(list.items, function(a, b) return a.order < b.order; end);

		if privacy.lists[list.name] then print("[warn] duplicate privacy list: "..tostring(list.name)); end

		privacy.lists[list.name] = list;

		count = count + 1;

	end

	if default and not privacy.lists[default] then

		if default == "none" then privacy.default = nil;

		else print("[warn] default privacy list doesn't exist: "..tostring(default)); end

	end

	local ret, err = dm.store(node, host, "privacy", privacy);

	print("["..(err or "success").."] privacy: " ..node.."@"..host.." - "..count.." list(s)");

end

function muc_room(node, host, properties)

	local store = { jid = node.."@"..host, _data = {}, _affiliations = {} };

	for _,aff in ipairs(properties.affiliations) do

		store._affiliations[build_jid(aff[1])] = aff[2][1] or aff[2];

	end

	-- destructure ejabberd's subject datum (e.g. [{text,<<>>,<<"my room subject">>}] )

	store._data.subject = properties.subject[1][3];

	if properties.subject_author then

		store._data.subject_from = store.jid .. "/" .. properties.subject_author;

	end

	store._data.name = properties.title;

	store._data.description = properties.description;

	if properties.password_protected ~= false and properties.password ~= "" then

		store._data.password = properties.password;

	end

	store._data.moderated = (properties.moderated == "true") or nil;

	store._data.members_only = (properties.members_only == "true") or nil;

	store._data.persistent = (properties.persistent == "true") or nil;

	store._data.changesubject = (properties.allow_change_subj == "true") or nil;

	store._data.whois = properties.anonymous == "true" and "moderators" or "anyone";

	store._data.hidden = (properties.public_list == "false") or nil;

	if not store._data.persistent then

		return print("[error] muc_room: skipping non-persistent room: "..node.."@"..host);

	end

	local ret, err = dm.store(node, host, "config", store);

	if ret then

		ret, err = dm.load(nil, host, "persistent");

		if ret or not err then

			ret = ret or {};

			ret[store.jid] = true;

			ret, err = dm.store(nil, host, "persistent", ret);

		end

	end

	print("["..(err or "success").."] muc_room: " ..node.."@"..host);

end

local filters = {

	passwd = function(tuple)

		password(tuple[2][1], tuple[2][2], tuple[3]);

	end;

	vcard = function(tuple)

		vcard(tuple[2][1], tuple[2][2], build_stanza(tuple[3]));

	end;

	roster = function(tuple)

		local node = tuple[3][1]; local host = tuple[3][2];

		local contact = build_jid(tuple[4]);

		local name = tuple[5]; local subscription = tuple[6];

		local ask = tuple[7]; local groups = tuple[8];

		if type(name) ~= type("") then name = nil; end

		if ask == "none" then

			ask = nil;

		elseif ask == "out" then

			ask = "subscribe"

		elseif ask == "in" then

			roster_pending(node, host, contact);

			ask = nil;

		elseif ask == "both" then

			roster_pending(node, host, contact);

			ask = "subscribe";

		else error("Unknown ask type: "..ask); end

		if subscription ~= "both" and subscription ~= "from" and subscription ~= "to" and subscription ~= "none" then error(subscription) end

		local item = {name = name, ask = ask, subscription = subscription, groups = {}};

		for _, g in ipairs(groups) do

			if type(g) == "string" then

				item.groups[g] = true;

			end

		end

		roster(node, host, contact, item);

	end;

	private_storage = function(tuple)

		private_storage(tuple[2][1], tuple[2][2], tuple[2][3], build_stanza(tuple[3]));

	end;

	offline_msg = function(tuple)

		offline_msg(tuple[2][1], tuple[2][2], build_time(tuple[3]), build_stanza(tuple[7]));

	end;

	privacy = function(tuple)

		privacy(tuple[2][1], tuple[2][2], tuple[3], tuple[4]);

	end;

	muc_room = function(tuple)

		local properties = {};

		for _,pair in ipairs(tuple[3]) do

			if not(type(pair[2]) == "table" and #pair[2] == 0) then -- skip nil values

				properties[pair[1]] = pair[2];

			end

		end

		muc_room(tuple[2][1], tuple[2][2], properties);

	end;

	--[=[config = function(tuple)

		if tuple[2] == "hosts" then

			local output = io.output(); io.output("prosody.cfg.lua");

			io.write("-- Configuration imported from ejabberd --\n");

			io.write([[Host "*"

	modules_enabled = {

		"saslauth"; -- Authentication for clients and servers. Recommended if you want to log in.

		"legacyauth"; -- Legacy authentication. Only used by some old clients and bots.

		"roster"; -- Allow users to have a roster. Recommended ;)

		"register"; -- Allow users to register on this server using a client

		"tls"; -- Add support for secure TLS on c2s/s2s connections

		"vcard"; -- Allow users to set vCards

		"private"; -- Private XML storage (for room bookmarks, etc.)

		"version"; -- Replies to server version requests

		"dialback"; -- s2s dialback support

		"uptime";

		"disco";

		"time";

		"ping";

		--"selftests";

	};

]]);

			for _, h in ipairs(tuple[3]) do

				io.write("Host \"" .. h .. "\"\n");

			end

			io.output(output);

			print("prosody.cfg.lua created");

		end

	end;]=]

};

local arg = ...;

local help = "/? -? ? /h -h /help -help --help";

if not arg or help:find(arg, 1, true) then

	print([[ejabberd db dump importer for Prosody

  Usage: ]]..my_name..[[ filename.txt

The file can be generated from ejabberd using:

  sudo ejabberdctl dump filename.txt

Note: The path of ejabberdctl depends on your ejabberd installation, and ejabberd needs to be running for ejabberdctl to work.]]);

	os.exit(1);

end

local count = 0;

local t = {};

for item in erlparse.parseFile(arg) do

	count = count + 1;

	local name = item[1];

	t[name] = (t[name] or 0) + 1;

	--print(count, serialize(item));

	if filters[name] then filters[name](item); end

end

--print(serialize(t));