mirror of
https://github.com/JamesonHuang/OpenWrt_Luci_Lua.git
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967 lines
30 KiB
Lua
967 lines
30 KiB
Lua
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--[[
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LuCI - System library
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Description:
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Utilities for interaction with the Linux system
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FileId:
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$Id: sys.lua 9623 2013-01-18 14:08:37Z jow $
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License:
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Copyright 2008 Steven Barth <steven@midlink.org>
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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]]--
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local io = require "io"
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local os = require "os"
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local table = require "table"
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local nixio = require "nixio"
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local fs = require "nixio.fs"
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local uci = require "luci.model.uci"
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local luci = {}
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luci.util = require "luci.util"
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luci.ip = require "luci.ip"
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local tonumber, ipairs, pairs, pcall, type, next, setmetatable, require, select =
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tonumber, ipairs, pairs, pcall, type, next, setmetatable, require, select
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--- LuCI Linux and POSIX system utilities.
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module "luci.sys"
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--- Execute a given shell command and return the error code
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-- @class function
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-- @name call
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-- @param ... Command to call
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-- @return Error code of the command
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function call(...)
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return os.execute(...) / 256
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end
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--- Execute a given shell command and capture its standard output
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-- @class function
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-- @name exec
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-- @param command Command to call
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-- @return String containg the return the output of the command
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exec = luci.util.exec
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--- Retrieve information about currently mounted file systems.
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-- @return Table containing mount information
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function mounts()
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local data = {}
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local k = {"fs", "blocks", "used", "available", "percent", "mountpoint"}
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local ps = luci.util.execi("df")
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if not ps then
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return
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else
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ps()
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end
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for line in ps do
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local row = {}
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local j = 1
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for value in line:gmatch("[^%s]+") do
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row[k[j]] = value
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j = j + 1
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end
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if row[k[1]] then
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-- this is a rather ugly workaround to cope with wrapped lines in
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-- the df output:
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--
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-- /dev/scsi/host0/bus0/target0/lun0/part3
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-- 114382024 93566472 15005244 86% /mnt/usb
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--
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if not row[k[2]] then
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j = 2
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line = ps()
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for value in line:gmatch("[^%s]+") do
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row[k[j]] = value
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j = j + 1
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end
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end
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table.insert(data, row)
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end
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end
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return data
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end
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--- Retrieve environment variables. If no variable is given then a table
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-- containing the whole environment is returned otherwise this function returns
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-- the corresponding string value for the given name or nil if no such variable
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-- exists.
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-- @class function
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-- @name getenv
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-- @param var Name of the environment variable to retrieve (optional)
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-- @return String containg the value of the specified variable
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-- @return Table containing all variables if no variable name is given
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getenv = nixio.getenv
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--- Get or set the current hostname.
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-- @param String containing a new hostname to set (optional)
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-- @return String containing the system hostname
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function hostname(newname)
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if type(newname) == "string" and #newname > 0 then
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fs.writefile( "/proc/sys/kernel/hostname", newname )
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return newname
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else
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return nixio.uname().nodename
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end
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end
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--- Returns the contents of a documented referred by an URL.
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-- @param url The URL to retrieve
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-- @param stream Return a stream instead of a buffer
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-- @param target Directly write to target file name
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-- @return String containing the contents of given the URL
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function httpget(url, stream, target)
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if not target then
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local source = stream and io.popen or luci.util.exec
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return source("wget -qO- '"..url:gsub("'", "").."'")
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else
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return os.execute("wget -qO '%s' '%s'" %
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{target:gsub("'", ""), url:gsub("'", "")})
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end
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end
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--- Returns the system load average values.
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-- @return String containing the average load value 1 minute ago
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-- @return String containing the average load value 5 minutes ago
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-- @return String containing the average load value 15 minutes ago
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function loadavg()
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local info = nixio.sysinfo()
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return info.loads[1], info.loads[2], info.loads[3]
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end
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--- Initiate a system reboot.
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-- @return Return value of os.execute()
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function reboot()
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return os.execute("reboot >/dev/null 2>&1")
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end
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--- Returns the system type, cpu name and installed physical memory.
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-- @return String containing the system or platform identifier
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-- @return String containing hardware model information
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-- @return String containing the total memory amount in kB
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-- @return String containing the memory used for caching in kB
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-- @return String containing the memory used for buffering in kB
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-- @return String containing the free memory amount in kB
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-- @return String containing the cpu bogomips (number)
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function sysinfo()
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local cpuinfo = fs.readfile("/proc/cpuinfo")
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local meminfo = fs.readfile("/proc/meminfo")
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local memtotal = tonumber(meminfo:match("MemTotal:%s*(%d+)"))
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local memcached = tonumber(meminfo:match("\nCached:%s*(%d+)"))
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local memfree = tonumber(meminfo:match("MemFree:%s*(%d+)"))
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local membuffers = tonumber(meminfo:match("Buffers:%s*(%d+)"))
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local bogomips = tonumber(cpuinfo:match("[Bb]ogo[Mm][Ii][Pp][Ss].-: ([^\n]+)")) or 0
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local system =
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cpuinfo:match("system type\t+: ([^\n]+)") or
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cpuinfo:match("Processor\t+: ([^\n]+)") or
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cpuinfo:match("model name\t+: ([^\n]+)")
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local model =
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luci.util.pcdata(fs.readfile("/tmp/sysinfo/model")) or
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cpuinfo:match("machine\t+: ([^\n]+)") or
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cpuinfo:match("Hardware\t+: ([^\n]+)") or
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luci.util.pcdata(fs.readfile("/proc/diag/model")) or
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nixio.uname().machine or
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system
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return system, model, memtotal, memcached, membuffers, memfree, bogomips
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end
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--- Retrieves the output of the "logread" command.
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-- @return String containing the current log buffer
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function syslog()
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return luci.util.exec("logread")
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end
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--- Retrieves the output of the "dmesg" command.
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-- @return String containing the current log buffer
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function dmesg()
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return luci.util.exec("dmesg")
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end
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--- Generates a random id with specified length.
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-- @param bytes Number of bytes for the unique id
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-- @return String containing hex encoded id
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function uniqueid(bytes)
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local rand = fs.readfile("/dev/urandom", bytes)
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return rand and nixio.bin.hexlify(rand)
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end
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--- Returns the current system uptime stats.
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-- @return String containing total uptime in seconds
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function uptime()
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return nixio.sysinfo().uptime
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end
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--- LuCI system utilities / network related functions.
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-- @class module
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-- @name luci.sys.net
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net = {}
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--- Returns the current arp-table entries as two-dimensional table.
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-- @return Table of table containing the current arp entries.
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-- The following fields are defined for arp entry objects:
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-- { "IP address", "HW address", "HW type", "Flags", "Mask", "Device" }
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function net.arptable(callback)
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local arp, e, r, v
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if fs.access("/proc/net/arp") then
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for e in io.lines("/proc/net/arp") do
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local r = { }, v
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for v in e:gmatch("%S+") do
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r[#r+1] = v
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end
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if r[1] ~= "IP" then
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local x = {
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["IP address"] = r[1],
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["HW type"] = r[2],
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["Flags"] = r[3],
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["HW address"] = r[4],
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["Mask"] = r[5],
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["Device"] = r[6]
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}
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if callback then
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callback(x)
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else
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arp = arp or { }
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arp[#arp+1] = x
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end
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end
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end
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end
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return arp
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end
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local function _nethints(what, callback)
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local _, k, e, mac, ip, name
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local cur = uci.cursor()
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local ifn = { }
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local hosts = { }
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local function _add(i, ...)
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local k = select(i, ...)
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if k then
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if not hosts[k] then hosts[k] = { } end
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hosts[k][1] = select(1, ...) or hosts[k][1]
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hosts[k][2] = select(2, ...) or hosts[k][2]
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hosts[k][3] = select(3, ...) or hosts[k][3]
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hosts[k][4] = select(4, ...) or hosts[k][4]
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end
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end
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if fs.access("/proc/net/arp") then
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for e in io.lines("/proc/net/arp") do
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ip, mac = e:match("^([%d%.]+)%s+%S+%s+%S+%s+([a-fA-F0-9:]+)%s+")
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if ip and mac then
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_add(what, mac:upper(), ip, nil, nil)
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end
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end
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end
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if fs.access("/etc/ethers") then
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for e in io.lines("/etc/ethers") do
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mac, ip = e:match("^([a-f0-9]%S+) (%S+)")
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if mac and ip then
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_add(what, mac:upper(), ip, nil, nil)
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end
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end
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end
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if fs.access("/var/dhcp.leases") then
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for e in io.lines("/var/dhcp.leases") do
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mac, ip, name = e:match("^%d+ (%S+) (%S+) (%S+)")
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if mac and ip then
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_add(what, mac:upper(), ip, nil, name ~= "*" and name)
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end
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end
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end
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cur:foreach("dhcp", "host",
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function(s)
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for mac in luci.util.imatch(s.mac) do
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_add(what, mac:upper(), s.ip, nil, s.name)
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end
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end)
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for _, e in ipairs(nixio.getifaddrs()) do
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if e.name ~= "lo" then
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ifn[e.name] = ifn[e.name] or { }
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if e.family == "packet" and e.addr and #e.addr == 17 then
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ifn[e.name][1] = e.addr:upper()
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elseif e.family == "inet" then
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ifn[e.name][2] = e.addr
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elseif e.family == "inet6" then
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ifn[e.name][3] = e.addr
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end
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end
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end
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for _, e in pairs(ifn) do
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if e[what] and (e[2] or e[3]) then
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_add(what, e[1], e[2], e[3], e[4])
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end
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end
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for _, e in luci.util.kspairs(hosts) do
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callback(e[1], e[2], e[3], e[4])
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end
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end
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--- Returns a two-dimensional table of mac address hints.
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-- @return Table of table containing known hosts from various sources.
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-- Each entry contains the values in the following order:
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-- [ "mac", "name" ]
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function net.mac_hints(callback)
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if callback then
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_nethints(1, function(mac, v4, v6, name)
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name = name or nixio.getnameinfo(v4 or v6, nil, 100) or v4
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if name and name ~= mac then
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callback(mac, name or nixio.getnameinfo(v4 or v6, nil, 100) or v4)
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end
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end)
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else
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local rv = { }
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_nethints(1, function(mac, v4, v6, name)
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name = name or nixio.getnameinfo(v4 or v6, nil, 100) or v4
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if name and name ~= mac then
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rv[#rv+1] = { mac, name or nixio.getnameinfo(v4 or v6, nil, 100) or v4 }
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end
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end)
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return rv
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end
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end
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--- Returns a two-dimensional table of IPv4 address hints.
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-- @return Table of table containing known hosts from various sources.
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-- Each entry contains the values in the following order:
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-- [ "ip", "name" ]
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function net.ipv4_hints(callback)
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if callback then
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_nethints(2, function(mac, v4, v6, name)
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name = name or nixio.getnameinfo(v4, nil, 100) or mac
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if name and name ~= v4 then
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callback(v4, name)
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end
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end)
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||
|
|
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)
|
||
|
|
if username and username:lower()=="admin" then
|
||
|
|
username = "root"
|
||
|
|
end
|
||
|
|
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)
|
||
|
|
if username and username:lower()=="admin" then
|
||
|
|
username = "root"
|
||
|
|
end
|
||
|
|
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 username and username:lower()=="admin" then
|
||
|
|
username = "root"
|
||
|
|
end
|
||
|
|
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
|