]]--
+
+local io = require "io"
+local os = require "os"
+local posix = require "posix"
+local table = require "table"
+
+local luci = {}
+luci.util = require "luci.util"
+luci.fs = require "luci.fs"
+luci.ip = require "luci.ip"
+
+local tonumber, ipairs, pairs = tonumber, ipairs, pairs
+
+
--- LuCI Linux and POSIX system utilities.
-module("luci.sys", package.seeall)
-require("posix")
-require("luci.util")
-require("luci.fs")
-require("luci.ip")
+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
--- Invoke the luci-flash executable to write an image to the flash memory.
+-- @param image Local path or URL to image file
-- @param kpattern Pattern of files to keep over flash process
-- @return Return value of os.execute()
function flash(image, kpattern)
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
--- 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)
- local source = stream and io.open or luci.util.exec
- return source("wget -qO- '"..url:gsub("'", "").."'")
+function httpget(url, stream, target)
+ if not target then
+ local source = stream and io.open 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 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 Number containing free memory in percent
--- @return Number containing buffer memory in percent
--- @return Number containing cache memory in percent
function sysinfo()
local c1 = "cat /proc/cpuinfo|grep system\\ typ|cut -d: -f2 2>/dev/null"
local c2 = "uname -m 2>/dev/null"
local system = luci.util.trim(luci.util.exec(c1))
local model = ""
- local memtotal = luci.util.trim(luci.util.exec(c5))
- local memcached = luci.util.trim(luci.util.exec(c6))
- local memfree = luci.util.trim(luci.util.exec(c7))
- local membuffers = luci.util.trim(luci.util.exec(c8))
- local perc_memfree = math.floor((memfree/memtotal)*100)
- local perc_membuffers = math.floor((membuffers/memtotal)*100)
- local perc_memcached = math.floor((memcached/memtotal)*100)
+ local memtotal = tonumber(luci.util.trim(luci.util.exec(c5)))
+ local memcached = tonumber(luci.util.trim(luci.util.exec(c6)))
+ local memfree = tonumber(luci.util.trim(luci.util.exec(c7)))
+ local membuffers = tonumber(luci.util.trim(luci.util.exec(c8)))
if system == "" then
system = luci.util.trim(luci.util.exec(c2))
model = luci.util.trim(luci.util.exec(c4))
end
- return system, model, memtotal, memcached, membuffers, memfree, perc_memfree, perc_membuffers, perc_memcached
+ return system, model, memtotal, memcached, membuffers, memfree
end
--- Retrieves the output of the "logread" command.
group = {}
--- Returns information about a POSIX user group.
+-- @class function
+-- @name getgroup
-- @param group Group ID or name of a system user group
-- @return Table with information about the requested group
group.getgroup = posix.getgroup
process = {}
--- Get the current process id.
+-- @class function
+-- @name process.info
-- @return Number containing the current pid
process.info = posix.getpid
local data = {}
local k
local ps = luci.util.execi("top -bn1")
-
+
if not ps then
return
end
-
+
while true do
local line = ps()
if not line then
return
end
-
+
k = luci.util.split(luci.util.trim(line), "%s+", nil, true)
if k[1] == "PID" then
break
end
end
-
+
for line in ps do
local row = {}
-
+
line = luci.util.trim(line)
for i, value in ipairs(luci.util.split(line, "%s+", #k-1, true)) do
row[k[i]] = value
end
-
+
local pid = tonumber(row[k[1]])
if pid then
data[pid] = row
end
end
-
+
return data
end
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
local account = user.getuser(username)
if account then
- if account.passwd == "!" then
+ local pwd = account.passwd
+ if pwd == "!" then
return true
- else
- return (account.passwd == posix.crypt(password, account.passwd))
+ elseif pwd == "x" then
+ pwd = nil
+ for l in io.lines("/etc/shadow") do
+ pwd = l:match("^%s:([^:]+)" % username)
+ if pwd then
+ break
+ end
+ end
+ if not pwd then
+ return nil, "No shadow password for " .. username
+ end
end
+
+ return (pwd == posix.crypt(password, pwd))
end
end
--- Get iwlist scan output from all wireless devices.
-- @return Table of tables contaiing all scan results
-function wifi.iwscan()
- local cnt = luci.util.exec("iwlist scan 2>/dev/null")
+function wifi.iwscan(iface)
+ local siface = iface or ""
+ local cnt = luci.util.exec("iwlist "..siface.." scan 2>/dev/null")
local iws = {}
for i, l in pairs(luci.util.split(luci.util.trim(cnt), "\n\n")) do
end
end
- return iws
+ return iface and (iws[iface] or {}) or iws
end
projects / project / luci.git / blobdiff