Rework LuCI build system

 * Rename subdirectories to their repective OpenWrt package names
 * Make each LuCI module its own standalone package
 * Deploy a shared luci.mk which is used by each module Makefile

Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>

1 files changed, 0 insertions, 962 deletions

diff --git a/modules/base/luasrc/sys.lua b/modules/base/luasrc/sys.lua
deleted file mode 100644
index 3a04f6bada..0000000000
--- a/modules/base/luasrc/sys.lua
+++ /dev/null
@@ -1,962 +0,0 @@
---[[
-LuCI - System library
-
-Description:
-Utilities for interaction with the Linux system
-
-FileId:
-$Id$
-
-License:
-Copyright 2008 Steven Barth <steven@midlink.org>
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-	http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-
-]]--
-
-
-local io     = require "io"
-local os     = require "os"
-local table  = require "table"
-local nixio  = require "nixio"
-local fs     = require "nixio.fs"
-local uci    = require "luci.model.uci"
-
-local luci  = {}
-luci.util   = require "luci.util"
-luci.ip     = require "luci.ip"
-
-local tonumber, ipairs, pairs, pcall, type, next, setmetatable, require, select =
-	tonumber, ipairs, pairs, pcall, type, next, setmetatable, require, select
-
-
---- LuCI Linux and POSIX system utilities.
-module "luci.sys"
-
---- Execute a given shell command and return the error code
--- @class		function
--- @name		call
--- @param 		...		Command to call
--- @return		Error code of the command
-function call(...)
-	return os.execute(...) / 256
-end
-
---- Execute a given shell command and capture its standard output
--- @class		function
--- @name		exec
--- @param command	Command to call
--- @return			String containg the return the output of the command
-exec = luci.util.exec
-
---- Retrieve information about currently mounted file systems.
--- @return 	Table containing mount information
-function mounts()
-	local data = {}
-	local k = {"fs", "blocks", "used", "available", "percent", "mountpoint"}
-	local ps = luci.util.execi("df")
-
-	if not ps then
-		return
-	else
-		ps()
-	end
-
-	for line in ps do
-		local row = {}
-
-		local j = 1
-		for value in line:gmatch("[^%s]+") do
-			row[k[j]] = value
-			j = j + 1
-		end
-
-		if row[k[1]] then
-
-			-- this is a rather ugly workaround to cope with wrapped lines in
-			-- the df output:
-			--
-			--	/dev/scsi/host0/bus0/target0/lun0/part3
-			--                   114382024  93566472  15005244  86% /mnt/usb
-			--
-
-			if not row[k[2]] then
-				j = 2
-				line = ps()
-				for value in line:gmatch("[^%s]+") do
-					row[k[j]] = value
-					j = j + 1
-				end
-			end
-
-			table.insert(data, row)
-		end
-	end
-
-	return data
-end
-
---- Retrieve environment variables. If no variable is given then a table
--- containing the whole environment is returned otherwise this function returns
--- the corresponding string value for the given name or nil if no such variable
--- exists.
--- @class		function
--- @name		getenv
--- @param var	Name of the environment variable to retrieve (optional)
--- @return		String containg the value of the specified variable
--- @return		Table containing all variables if no variable name is given
-getenv = nixio.getenv
-
---- Get or set the current hostname.
--- @param		String containing a new hostname to set (optional)
--- @return		String containing the system hostname
-function hostname(newname)
-	if type(newname) == "string" and #newname > 0 then
-		fs.writefile( "/proc/sys/kernel/hostname", newname )
-		return newname
-	else
-		return nixio.uname().nodename
-	end
-end
-
---- Returns the contents of a documented referred by an URL.
--- @param url	 The URL to retrieve
--- @param stream Return a stream instead of a buffer
--- @param target Directly write to target file name
--- @return		String containing the contents of given the URL
-function httpget(url, stream, target)
-	if not target then
-		local source = stream and io.popen or luci.util.exec
-		return source("wget -qO- '"..url:gsub("'", "").."'")
-	else
-		return os.execute("wget -qO '%s' '%s'" %
-			{target:gsub("'", ""), url:gsub("'", "")})
-	end
-end
-
---- Returns the system load average values.
--- @return	String containing the average load value 1 minute ago
--- @return	String containing the average load value 5 minutes ago
--- @return	String containing the average load value 15 minutes ago
-function loadavg()
-	local info = nixio.sysinfo()
-	return info.loads[1], info.loads[2], info.loads[3]
-end
-
---- Initiate a system reboot.
--- @return	Return value of os.execute()
-function reboot()
-	return os.execute("reboot >/dev/null 2>&1")
-end
-
---- Returns the system type, cpu name and installed physical memory.
--- @return	String containing the system or platform identifier
--- @return	String containing hardware model information
--- @return	String containing the total memory amount in kB
--- @return	String containing the memory used for caching in kB
--- @return	String containing the memory used for buffering in kB
--- @return	String containing the free memory amount in kB
--- @return	String containing the cpu bogomips (number)
-function sysinfo()
-	local cpuinfo = fs.readfile("/proc/cpuinfo")
-	local meminfo = fs.readfile("/proc/meminfo")
-
-	local memtotal = tonumber(meminfo:match("MemTotal:%s*(%d+)"))
-	local memcached = tonumber(meminfo:match("\nCached:%s*(%d+)"))
-	local memfree = tonumber(meminfo:match("MemFree:%s*(%d+)"))
-	local membuffers = tonumber(meminfo:match("Buffers:%s*(%d+)"))
-	local bogomips = tonumber(cpuinfo:match("[Bb]ogo[Mm][Ii][Pp][Ss].-: ([^\n]+)")) or 0
-	local swaptotal = tonumber(meminfo:match("SwapTotal:%s*(%d+)"))
-	local swapcached = tonumber(meminfo:match("SwapCached:%s*(%d+)"))
-	local swapfree = tonumber(meminfo:match("SwapFree:%s*(%d+)"))
-
-	local system =
-		cpuinfo:match("system type\t+: ([^\n]+)") or
-		cpuinfo:match("Processor\t+: ([^\n]+)") or
-		cpuinfo:match("model name\t+: ([^\n]+)")
-
-	local model =
-		fs.readfile("/proc/device-tree/model") or
-		luci.util.pcdata(fs.readfile("/tmp/sysinfo/model")) or
-		cpuinfo:match("machine\t+: ([^\n]+)") or
-		cpuinfo:match("Hardware\t+: ([^\n]+)") or
-		luci.util.pcdata(fs.readfile("/proc/diag/model")) or
-		nixio.uname().machine or
-		system
-
-	return system, model, memtotal, memcached, membuffers, memfree, bogomips, swaptotal, swapcached, swapfree
-end
-
---- Retrieves the output of the "logread" command.
--- @return	String containing the current log buffer
-function syslog()
-	return luci.util.exec("logread")
-end
-
---- Retrieves the output of the "dmesg" command.
--- @return	String containing the current log buffer
-function dmesg()
-	return luci.util.exec("dmesg")
-end
-
---- Generates a random id with specified length.
--- @param bytes	Number of bytes for the unique id
--- @return		String containing hex encoded id
-function uniqueid(bytes)
-	local rand = fs.readfile("/dev/urandom", bytes)
-	return rand and nixio.bin.hexlify(rand)
-end
-
---- Returns the current system uptime stats.
--- @return	String containing total uptime in seconds
-function uptime()
-	return nixio.sysinfo().uptime
-end
-
-
---- LuCI system utilities / network related functions.
--- @class	module
--- @name	luci.sys.net
-net = {}
-
---- Returns the current arp-table entries as two-dimensional table.
--- @return	Table of table containing the current arp entries.
---			The following fields are defined for arp entry objects:
---			{ "IP address", "HW address", "HW type", "Flags", "Mask", "Device" }
-function net.arptable(callback)
-	local arp = (not callback) and {} or nil
-	local e, r, v
-	if fs.access("/proc/net/arp") then
-		for e in io.lines("/proc/net/arp") do
-			local r = { }, v
-			for v in e:gmatch("%S+") do
-				r[#r+1] = v
-			end
-
-			if r[1] ~= "IP" then
-				local x = {
-					["IP address"] = r[1],
-					["HW type"]    = r[2],
-					["Flags"]      = r[3],
-					["HW address"] = r[4],
-					["Mask"]       = r[5],
-					["Device"]     = r[6]
-				}
-
-				if callback then
-					callback(x)
-				else
-					arp = arp or { }
-					arp[#arp+1] = x
-				end
-			end
-		end
-	end
-	return arp
-end
-
-local function _nethints(what, callback)
-	local _, k, e, mac, ip, name
-	local cur = uci.cursor()
-	local ifn = { }
-	local hosts = { }
-
-	local function _add(i, ...)
-		local k = select(i, ...)
-		if k then
-			if not hosts[k] then hosts[k] = { } end
-			hosts[k][1] = select(1, ...) or hosts[k][1]
-			hosts[k][2] = select(2, ...) or hosts[k][2]
-			hosts[k][3] = select(3, ...) or hosts[k][3]
-			hosts[k][4] = select(4, ...) or hosts[k][4]
-		end
-	end
-
-	if fs.access("/proc/net/arp") then
-		for e in io.lines("/proc/net/arp") do
-			ip, mac = e:match("^([%d%.]+)%s+%S+%s+%S+%s+([a-fA-F0-9:]+)%s+")
-			if ip and mac then
-				_add(what, mac:upper(), ip, nil, nil)
-			end
-		end
-	end
-
-	if fs.access("/etc/ethers") then
-		for e in io.lines("/etc/ethers") do
-			mac, ip = e:match("^([a-f0-9]%S+) (%S+)")
-			if mac and ip then
-				_add(what, mac:upper(), ip, nil, nil)
-			end
-		end
-	end
-
-	if fs.access("/var/dhcp.leases") then
-		for e in io.lines("/var/dhcp.leases") do
-			mac, ip, name = e:match("^%d+ (%S+) (%S+) (%S+)")
-			if mac and ip then
-				_add(what, mac:upper(), ip, nil, name ~= "*" and name)
-			end
-		end
-	end
-
-	cur:foreach("dhcp", "host",
-		function(s)
-			for mac in luci.util.imatch(s.mac) do
-				_add(what, mac:upper(), s.ip, nil, s.name)
-			end
-		end)
-
-	for _, e in ipairs(nixio.getifaddrs()) do
-		if e.name ~= "lo" then
-			ifn[e.name] = ifn[e.name] or { }
-			if e.family == "packet" and e.addr and #e.addr == 17 then
-				ifn[e.name][1] = e.addr:upper()
-			elseif e.family == "inet" then
-				ifn[e.name][2] = e.addr
-			elseif e.family == "inet6" then
-				ifn[e.name][3] = e.addr
-			end
-		end
-	end
-
-	for _, e in pairs(ifn) do
-		if e[what] and (e[2] or e[3]) then
-			_add(what, e[1], e[2], e[3], e[4])
-		end
-	end
-
-	for _, e in luci.util.kspairs(hosts) do
-		callback(e[1], e[2], e[3], e[4])
-	end
-end
-
---- Returns a two-dimensional table of mac address hints.
--- @return  Table of table containing known hosts from various sources.
---          Each entry contains the values in the following order:
---          [ "mac", "name" ]
-function net.mac_hints(callback)
-	if callback then
-		_nethints(1, function(mac, v4, v6, name)
-			name = name or nixio.getnameinfo(v4 or v6, nil, 100) or v4
-			if name and name ~= mac then
-				callback(mac, name or nixio.getnameinfo(v4 or v6, nil, 100) or v4)
-			end
-		end)
-	else
-		local rv = { }
-		_nethints(1, function(mac, v4, v6, name)
-			name = name or nixio.getnameinfo(v4 or v6, nil, 100) or v4
-			if name and name ~= mac then
-				rv[#rv+1] = { mac, name or nixio.getnameinfo(v4 or v6, nil, 100) or v4 }
-			end
-		end)
-		return rv
-	end
-end
-
---- Returns a two-dimensional table of IPv4 address hints.
--- @return  Table of table containing known hosts from various sources.
---          Each entry contains the values in the following order:
---          [ "ip", "name" ]
-function net.ipv4_hints(callback)
-	if callback then
-		_nethints(2, function(mac, v4, v6, name)
-			name = name or nixio.getnameinfo(v4, nil, 100) or mac
-			if name and name ~= v4 then
-				callback(v4, name)
-			end
-		end)
-	else
-		local rv = { }
-		_nethints(2, function(mac, v4, v6, name)
-			name = name or nixio.getnameinfo(v4, nil, 100) or mac
-			if name and name ~= v4 then
-				rv[#rv+1] = { v4, name }
-			end
-		end)
-		return rv
-	end
-end
-
---- Returns a two-dimensional table of IPv6 address hints.
--- @return  Table of table containing known hosts from various sources.
---          Each entry contains the values in the following order:
---          [ "ip", "name" ]
-function net.ipv6_hints(callback)
-	if callback then
-		_nethints(3, function(mac, v4, v6, name)
-			name = name or nixio.getnameinfo(v6, nil, 100) or mac
-			if name and name ~= v6 then
-				callback(v6, name)
-			end
-		end)
-	else
-		local rv = { }
-		_nethints(3, function(mac, v4, v6, name)
-			name = name or nixio.getnameinfo(v6, nil, 100) or mac
-			if name and name ~= v6 then
-				rv[#rv+1] = { v6, name }
-			end
-		end)
-		return rv
-	end
-end
-
---- Returns conntrack information
--- @return	Table with the currently tracked IP connections
-function net.conntrack(callback)
-	local connt = {}
-	if fs.access("/proc/net/nf_conntrack", "r") then
-		for line in io.lines("/proc/net/nf_conntrack") do
-			line = line:match "^(.-( [^ =]+=).-)%2"
-			local entry, flags = _parse_mixed_record(line, " +")
-			if flags[6] ~= "TIME_WAIT" then
-				entry.layer3 = flags[1]
-				entry.layer4 = flags[3]
-				for i=1, #entry do
-					entry[i] = nil
-				end
-
-				if callback then
-					callback(entry)
-				else
-					connt[#connt+1] = entry
-				end
-			end
-		end
-	elseif fs.access("/proc/net/ip_conntrack", "r") then
-		for line in io.lines("/proc/net/ip_conntrack") do
-			line = line:match "^(.-( [^ =]+=).-)%2"
-			local entry, flags = _parse_mixed_record(line, " +")
-			if flags[4] ~= "TIME_WAIT" then
-				entry.layer3 = "ipv4"
-				entry.layer4 = flags[1]
-				for i=1, #entry do
-					entry[i] = nil
-				end
-
-				if callback then
-					callback(entry)
-				else
-					connt[#connt+1] = entry
-				end
-			end
-		end
-	else
-		return nil
-	end
-	return connt
-end
-
---- Determine the current IPv4 default route. If multiple default routes exist,
--- return the one with the lowest metric.
--- @return	Table with the properties of the current default route.
---			The following fields are defined:
---			{ "dest", "gateway", "metric", "refcount", "usecount", "irtt",
---			  "flags", "device" }
-function net.defaultroute()
-	local route
-
-	net.routes(function(rt)
-		if rt.dest:prefix() == 0 and (not route or route.metric > rt.metric) then
-			route = rt
-		end
-	end)
-
-	return route
-end
-
---- Determine the current IPv6 default route. If multiple default routes exist,
--- return the one with the lowest metric.
--- @return	Table with the properties of the current default route.
---			The following fields are defined:
---			{ "source", "dest", "nexthop", "metric", "refcount", "usecount",
---			  "flags", "device" }
-function net.defaultroute6()
-	local route
-
-	net.routes6(function(rt)
-		if rt.dest:prefix() == 0 and rt.device ~= "lo" and
-		   (not route or route.metric > rt.metric)
-		then
-			route = rt
-		end
-	end)
-
-	if not route then
-		local global_unicast = luci.ip.IPv6("2000::/3")
-		net.routes6(function(rt)
-			if rt.dest:equal(global_unicast) and
-			   (not route or route.metric > rt.metric)
-			then
-				route = rt
-			end
-		end)
-	end
-
-	return route
-end
-
---- Determine the names of available network interfaces.
--- @return	Table containing all current interface names
-function net.devices()
-	local devs = {}
-	for k, v in ipairs(nixio.getifaddrs()) do
-		if v.family == "packet" then
-			devs[#devs+1] = v.name
-		end
-	end
-	return devs
-end
-
-
---- Return information about available network interfaces.
--- @return	Table containing all current interface names and their information
-function net.deviceinfo()
-	local devs = {}
-	for k, v in ipairs(nixio.getifaddrs()) do
-		if v.family == "packet" then
-			local d = v.data
-			d[1] = d.rx_bytes
-			d[2] = d.rx_packets
-			d[3] = d.rx_errors
-			d[4] = d.rx_dropped
-			d[5] = 0
-			d[6] = 0
-			d[7] = 0
-			d[8] = d.multicast
-			d[9] = d.tx_bytes
-			d[10] = d.tx_packets
-			d[11] = d.tx_errors
-			d[12] = d.tx_dropped
-			d[13] = 0
-			d[14] = d.collisions
-			d[15] = 0
-			d[16] = 0
-			devs[v.name] = d
-		end
-	end
-	return devs
-end
-
-
--- Determine the MAC address belonging to the given IP address.
--- @param ip	IPv4 address
--- @return		String containing the MAC address or nil if it cannot be found
-function net.ip4mac(ip)
-	local mac = nil
-	net.arptable(function(e)
-		if e["IP address"] == ip then
-			mac = e["HW address"]
-		end
-	end)
-	return mac
-end
-
---- Returns the current kernel routing table entries.
--- @return	Table of tables with properties of the corresponding routes.
---			The following fields are defined for route entry tables:
---			{ "dest", "gateway", "metric", "refcount", "usecount", "irtt",
---			  "flags", "device" }
-function net.routes(callback)
-	local routes = { }
-
-	for line in io.lines("/proc/net/route") do
-
-		local dev, dst_ip, gateway, flags, refcnt, usecnt, metric,
-			  dst_mask, mtu, win, irtt = line:match(
-			"([^%s]+)\t([A-F0-9]+)\t([A-F0-9]+)\t([A-F0-9]+)\t" ..
-			"(%d+)\t(%d+)\t(%d+)\t([A-F0-9]+)\t(%d+)\t(%d+)\t(%d+)"
-		)
-
-		if dev then
-			gateway  = luci.ip.Hex( gateway,  32, luci.ip.FAMILY_INET4 )
-			dst_mask = luci.ip.Hex( dst_mask, 32, luci.ip.FAMILY_INET4 )
-			dst_ip   = luci.ip.Hex(
-				dst_ip, dst_mask:prefix(dst_mask), luci.ip.FAMILY_INET4
-			)
-
-			local rt = {
-				dest     = dst_ip,
-				gateway  = gateway,
-				metric   = tonumber(metric),
-				refcount = tonumber(refcnt),
-				usecount = tonumber(usecnt),
-				mtu      = tonumber(mtu),
-				window   = tonumber(window),
-				irtt     = tonumber(irtt),
-				flags    = tonumber(flags, 16),
-				device   = dev
-			}
-
-			if callback then
-				callback(rt)
-			else
-				routes[#routes+1] = rt
-			end
-		end
-	end
-
-	return routes
-end
-
---- Returns the current ipv6 kernel routing table entries.
--- @return	Table of tables with properties of the corresponding routes.
---			The following fields are defined for route entry tables:
---			{ "source", "dest", "nexthop", "metric", "refcount", "usecount",
---			  "flags", "device" }
-function net.routes6(callback)
-	if fs.access("/proc/net/ipv6_route", "r") then
-		local routes = { }
-
-		for line in io.lines("/proc/net/ipv6_route") do
-
-			local dst_ip, dst_prefix, src_ip, src_prefix, nexthop,
-				  metric, refcnt, usecnt, flags, dev = line:match(
-				"([a-f0-9]+) ([a-f0-9]+) " ..
-				"([a-f0-9]+) ([a-f0-9]+) " ..
-				"([a-f0-9]+) ([a-f0-9]+) " ..
-				"([a-f0-9]+) ([a-f0-9]+) " ..
-				"([a-f0-9]+) +([^%s]+)"
-			)
-
-			if dst_ip and dst_prefix and
-			   src_ip and src_prefix and
-			   nexthop and metric and
-			   refcnt and usecnt and
-			   flags and dev
-			then
-				src_ip = luci.ip.Hex(
-					src_ip, tonumber(src_prefix, 16), luci.ip.FAMILY_INET6, false
-				)
-
-				dst_ip = luci.ip.Hex(
-					dst_ip, tonumber(dst_prefix, 16), luci.ip.FAMILY_INET6, false
-				)
-
-				nexthop = luci.ip.Hex( nexthop, 128, luci.ip.FAMILY_INET6, false )
-
-				local rt = {
-					source   = src_ip,
-					dest     = dst_ip,
-					nexthop  = nexthop,
-					metric   = tonumber(metric, 16),
-					refcount = tonumber(refcnt, 16),
-					usecount = tonumber(usecnt, 16),
-					flags    = tonumber(flags, 16),
-					device   = dev,
-
-					-- lua number is too small for storing the metric
-					-- add a metric_raw field with the original content
-					metric_raw = metric
-				}
-
-				if callback then
-					callback(rt)
-				else
-					routes[#routes+1] = rt
-				end
-			end
-		end
-
-		return routes
-	end
-end
-
---- Tests whether the given host responds to ping probes.
--- @param host	String containing a hostname or IPv4 address
--- @return		Number containing 0 on success and >= 1 on error
-function net.pingtest(host)
-	return os.execute("ping -c1 '"..host:gsub("'", '').."' >/dev/null 2>&1")
-end
-
-
---- LuCI system utilities / process related functions.
--- @class	module
--- @name	luci.sys.process
-process = {}
-
---- Get the current process id.
--- @class function
--- @name  process.info
--- @return	Number containing the current pid
-function process.info(key)
-	local s = {uid = nixio.getuid(), gid = nixio.getgid()}
-	return not key and s or s[key]
-end
-
---- Retrieve information about currently running processes.
--- @return 	Table containing process information
-function process.list()
-	local data = {}
-	local k
-	local ps = luci.util.execi("/bin/busybox top -bn1")
-
-	if not ps then
-		return
-	end
-
-	for line in ps do
-		local pid, ppid, user, stat, vsz, mem, cpu, cmd = line:match(
-			"^ *(%d+) +(%d+) +(%S.-%S) +([RSDZTW][W ][<N ]) +(%d+) +(%d+%%) +(%d+%%) +(.+)"
-		)
-
-		local idx = tonumber(pid)
-		if idx then
-			data[idx] = {
-				['PID']     = pid,
-				['PPID']    = ppid,
-				['USER']    = user,
-				['STAT']    = stat,
-				['VSZ']     = vsz,
-				['%MEM']    = mem,
-				['%CPU']    = cpu,
-				['COMMAND'] = cmd
-			}
-		end
-	end
-
-	return data
-end
-
---- Set the gid of a process identified by given pid.
--- @param gid	Number containing the Unix group id
--- @return		Boolean indicating successful operation
--- @return		String containing the error message if failed
--- @return		Number containing the error code if failed
-function process.setgroup(gid)
-	return nixio.setgid(gid)
-end
-
---- Set the uid of a process identified by given pid.
--- @param uid	Number containing the Unix user id
--- @return		Boolean indicating successful operation
--- @return		String containing the error message if failed
--- @return		Number containing the error code if failed
-function process.setuser(uid)
-	return nixio.setuid(uid)
-end
-
---- Send a signal to a process identified by given pid.
--- @class function
--- @name  process.signal
--- @param pid	Number containing the process id
--- @param sig	Signal to send (default: 15 [SIGTERM])
--- @return		Boolean indicating successful operation
--- @return		Number containing the error code if failed
-process.signal = nixio.kill
-
-
---- LuCI system utilities / user related functions.
--- @class	module
--- @name	luci.sys.user
-user = {}
-
---- Retrieve user informations for given uid.
--- @class		function
--- @name		getuser
--- @param uid	Number containing the Unix user id
--- @return		Table containing the following fields:
---				{ "uid", "gid", "name", "passwd", "dir", "shell", "gecos" }
-user.getuser = nixio.getpw
-
---- Retrieve the current user password hash.
--- @param username	String containing the username to retrieve the password for
--- @return			String containing the hash or nil if no password is set.
--- @return			Password database entry
-function user.getpasswd(username)
-	local pwe = nixio.getsp and nixio.getsp(username) or nixio.getpw(username)
-	local pwh = pwe and (pwe.pwdp or pwe.passwd)
-	if not pwh or #pwh < 1 or pwh == "!" or pwh == "x" then
-		return nil, pwe
-	else
-		return pwh, pwe
-	end
-end
-
---- Test whether given string matches the password of a given system user.
--- @param username	String containing the Unix user name
--- @param pass		String containing the password to compare
--- @return			Boolean indicating wheather the passwords are equal
-function user.checkpasswd(username, pass)
-	local pwh, pwe = user.getpasswd(username)
-	if pwe then
-		return (pwh == nil or nixio.crypt(pass, pwh) == pwh)
-	end
-	return false
-end
-
---- Change the password of given user.
--- @param username	String containing the Unix user name
--- @param password	String containing the password to compare
--- @return			Number containing 0 on success and >= 1 on error
-function user.setpasswd(username, password)
-	if password then
-		password = password:gsub("'", [['"'"']])
-	end
-
-	if username then
-		username = username:gsub("'", [['"'"']])
-	end
-
-	return os.execute(
-		"(echo '" .. password .. "'; sleep 1; echo '" .. password .. "') | " ..
-		"passwd '" .. username .. "' >/dev/null 2>&1"
-	)
-end
-
-
---- LuCI system utilities / wifi related functions.
--- @class	module
--- @name	luci.sys.wifi
-wifi = {}
-
---- Get wireless information for given interface.
--- @param ifname        String containing the interface name
--- @return              A wrapped iwinfo object instance
-function wifi.getiwinfo(ifname)
-	local stat, iwinfo = pcall(require, "iwinfo")
-
-	if ifname then
-		local c = 0
-		local u = uci.cursor_state()
-		local d, n = ifname:match("^(%w+)%.network(%d+)")
-		if d and n then
-			ifname = d
-			n = tonumber(n)
-			u:foreach("wireless", "wifi-iface",
-				function(s)
-					if s.device == d then
-						c = c + 1
-						if c == n then
-							ifname = s.ifname or s.device
-							return false
-						end
-					end
-				end)
-		elseif u:get("wireless", ifname) == "wifi-device" then
-			u:foreach("wireless", "wifi-iface",
-				function(s)
-					if s.device == ifname and s.ifname then
-						ifname = s.ifname
-						return false
-					end
-				end)
-		end
-
-		local t = stat and iwinfo.type(ifname)
-		local x = t and iwinfo[t] or { }
-		return setmetatable({}, {
-			__index = function(t, k)
-				if k == "ifname" then
-					return ifname
-				elseif x[k] then
-					return x[k](ifname)
-				end
-			end
-		})
-	end
-end
-
-
---- LuCI system utilities / init related functions.
--- @class	module
--- @name	luci.sys.init
-init = {}
-init.dir = "/etc/init.d/"
-
---- Get the names of all installed init scripts
--- @return	Table containing the names of all inistalled init scripts
-function init.names()
-	local names = { }
-	for name in fs.glob(init.dir.."*") do
-		names[#names+1] = fs.basename(name)
-	end
-	return names
-end
-
---- Get the index of he given init script
--- @param name	Name of the init script
--- @return		Numeric index value
-function init.index(name)
-	if fs.access(init.dir..name) then
-		return call("env -i sh -c 'source %s%s enabled; exit ${START:-255}' >/dev/null"
-			%{ init.dir, name })
-	end
-end
-
-local function init_action(action, name)
-	if fs.access(init.dir..name) then
-		return call("env -i %s%s %s >/dev/null" %{ init.dir, name, action })
-	end
-end
-
---- Test whether the given init script is enabled
--- @param name	Name of the init script
--- @return		Boolean indicating whether init is enabled
-function init.enabled(name)
-	return (init_action("enabled", name) == 0)
-end
-
---- Enable the given init script
--- @param name	Name of the init script
--- @return		Boolean indicating success
-function init.enable(name)
-	return (init_action("enable", name) == 1)
-end
-
---- Disable the given init script
--- @param name	Name of the init script
--- @return		Boolean indicating success
-function init.disable(name)
-	return (init_action("disable", name) == 0)
-end
-
---- Start the given init script
--- @param name	Name of the init script
--- @return		Boolean indicating success
-function init.start(name)
-	return (init_action("start", name) == 0)
-end
-
---- Stop the given init script
--- @param name	Name of the init script
--- @return		Boolean indicating success
-function init.stop(name)
-	return (init_action("stop", name) == 0)
-end
-
-
--- Internal functions
-
-function _parse_mixed_record(cnt, delimiter)
-	delimiter = delimiter or "  "
-	local data = {}
-	local flags = {}
-
-	for i, l in pairs(luci.util.split(luci.util.trim(cnt), "\n")) do
-		for j, f in pairs(luci.util.split(luci.util.trim(l), delimiter, nil, true)) do
-			local k, x, v = f:match('([^%s][^:=]*) *([:=]*) *"*([^\n"]*)"*')
-
-			if k then
-				if x == "" then
-					table.insert(flags, k)
-				else
-					data[k] = v
-				end
-			end
-		end
-	end
-
-	return data, flags
-end