modules/admin-full: Add swap info to admin_status page if swap is available, #533
[project/luci.git] / libs / sys / luasrc / sys.lua
index 7906d2b..6628524 100644 (file)
@@ -36,8 +36,8 @@ local luci  = {}
 luci.util   = require "luci.util"
 luci.ip     = require "luci.ip"
 
-local tonumber, ipairs, pairs, pcall, type, next, setmetatable, require =
-       tonumber, ipairs, pairs, pcall, type, next, setmetatable, require
+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.
@@ -176,6 +176,9 @@ function sysinfo()
        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
@@ -190,7 +193,7 @@ function sysinfo()
                nixio.uname().machine or
                system
 
-       return system, model, memtotal, memcached, membuffers, memfree, bogomips
+       return system, model, memtotal, memcached, membuffers, memfree, bogomips, swaptotal, swapcached, swapfree
 end
 
 --- Retrieves the output of the "logread" command.
@@ -230,7 +233,181 @@ net = {}
 --                     The following fields are defined for arp entry objects:
 --                     { "IP address", "HW address", "HW type", "Flags", "Mask", "Device" }
 function net.arptable(callback)
-       return _parse_delimited_table(io.lines("/proc/net/arp"), "%s%s+", callback)
+       local arp, 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
@@ -451,35 +628,42 @@ function net.routes6(callback)
                                "([a-f0-9]+) +([^%s]+)"
                        )
 
-                       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 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
+                               if callback then
+                                       callback(rt)
+                               else
+                                       routes[#routes+1] = rt
+                               end
                        end
                end
 
@@ -514,38 +698,29 @@ end
 function process.list()
        local data = {}
        local k
-       local ps = luci.util.execi("top -bn1")
+       local ps = luci.util.execi("/bin/busybox 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[6] == "%VSZ" then
-                       k[6] = "%MEM"
-               end
-               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, ppid, user, stat, vsz, mem, cpu, cmd = line:match(
+                       "^ *(%d+) +(%d+) +(%S.-%S) +([RSDZTW][W ][<N ]) +(%d+) +(%d+%%) +(%d+%%) +(.+)"
+               )
 
-               local pid = tonumber(row[k[1]])
-               if pid then
-                       data[pid] = row
+               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
 
@@ -596,13 +771,14 @@ 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
+               return nil, pwe
        else
-               return pwh
+               return pwh, pwe
        end
 end
 
@@ -611,12 +787,11 @@ end
 -- @param pass         String containing the password to compare
 -- @return                     Boolean indicating wheather the passwords are equal
 function user.checkpasswd(username, pass)
-       local pwh = user.getpasswd(username)
-       if pwh and nixio.crypt(pass, pwh) ~= pwh then
-               return false
-       else
-               return true
+       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.
@@ -655,6 +830,7 @@ function wifi.getiwinfo(ifname)
                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)
@@ -690,89 +866,6 @@ function wifi.getiwinfo(ifname)
        end
 end
 
---- Get iwconfig output for all wireless devices.
--- @return     Table of tables containing the iwconfing output for each wifi device
-function wifi.getiwconfig()
-       local cnt = luci.util.exec("PATH=/sbin:/usr/sbin iwconfig 2>/dev/null")
-       local iwc = {}
-
-       for i, l in pairs(luci.util.split(luci.util.trim(cnt), "\n\n")) do
-               local k = l:match("^(.-) ")
-               l = l:gsub("^(.-) +", "", 1)
-               if k then
-                       local entry, flags = _parse_mixed_record(l)
-                       if entry then
-                               entry.flags = flags
-                       end
-                       iwc[k] = entry
-               end
-       end
-
-       return iwc
-end
-
---- Get iwlist scan output from all wireless devices.
--- @return     Table of tables contaiing all scan results
-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
-               local k = l:match("^(.-) ")
-               l = l:gsub("^[^\n]+", "", 1)
-               l = luci.util.trim(l)
-               if k then
-                       iws[k] = {}
-                       for j, c in pairs(luci.util.split(l, "\n          Cell")) do
-                               c = c:gsub("^(.-)- ", "", 1)
-                               c = luci.util.split(c, "\n", 7)
-                               c = table.concat(c, "\n", 1)
-                               local entry, flags = _parse_mixed_record(c)
-                               if entry then
-                                       entry.flags = flags
-                               end
-                               table.insert(iws[k], entry)
-                       end
-               end
-       end
-
-       return iface and (iws[iface] or {}) or iws
-end
-
---- Get available channels from given wireless iface.
--- @param iface        Wireless interface (optional)
--- @return             Table of available channels
-function wifi.channels(iface)
-       local stat, iwinfo = pcall(require, "iwinfo")
-       local cns
-
-       if stat then
-               local t = iwinfo.type(iface or "")
-               if iface and t and iwinfo[t] then
-                       cns = iwinfo[t].freqlist(iface)
-               end
-       end
-
-       if not cns or #cns == 0 then
-               cns = {
-                       {channel =  1, mhz = 2412},
-                       {channel =  2, mhz = 2417},
-                       {channel =  3, mhz = 2422},
-                       {channel =  4, mhz = 2427},
-                       {channel =  5, mhz = 2432},
-                       {channel =  6, mhz = 2437},
-                       {channel =  7, mhz = 2442},
-                       {channel =  8, mhz = 2447},
-                       {channel =  9, mhz = 2452},
-                       {channel = 10, mhz = 2457},
-                       {channel = 11, mhz = 2462}
-               }
-       end
-
-       return cns
-end
-
 
 --- LuCI system utilities / init related functions.
 -- @class      module
@@ -795,7 +888,7 @@ end
 -- @return             Numeric index value
 function init.index(name)
        if fs.access(init.dir..name) then
-               return call("env -i sh -c 'source %s%s; exit $START' >/dev/null"
+               return call("env -i sh -c 'source %s%s enabled; exit ${START:-255}' >/dev/null"
                        %{ init.dir, name })
        end
 end
@@ -844,39 +937,6 @@ end
 
 -- Internal functions
 
-function _parse_delimited_table(iter, delimiter, callback)
-       delimiter = delimiter or "%s+"
-
-       local data  = {}
-       local trim  = luci.util.trim
-       local split = luci.util.split
-
-       local keys = split(trim(iter()), delimiter, nil, true)
-       for i, j in pairs(keys) do
-               keys[i] = trim(keys[i])
-       end
-
-       for line in iter do
-               local row = {}
-               line = trim(line)
-               if #line > 0 then
-                       for i, j in pairs(split(line, delimiter, nil, true)) do
-                               if keys[i] then
-                                       row[keys[i]] = j
-                               end
-                       end
-               end
-
-               if callback then
-                       callback(row)
-               else
-                       data[#data+1] = row
-               end
-       end
-
-       return data
-end
-
 function _parse_mixed_record(cnt, delimiter)
        delimiter = delimiter or "  "
        local data = {}