applications/luci-splash/root/usr/sbin/luci-splash

   1 #!/usr/bin/lua
   2
   3 utl = require "luci.util"
   4 sys = require "luci.sys"
   5
   6 require("luci.model.uci")
   7 require("luci.sys.iptparser")
   8
   9 -- Init state session
  10 local uci = luci.model.uci.cursor_state()
  11 local ipt = luci.sys.iptparser.IptParser()
  12 local net = sys.net
  13 local fs = require "luci.fs"
  14 local ip = require "luci.ip"
  15
  16 local debug = true
  17
  18 local has_ipv6 = fs.access("/proc/net/ipv6_route") and fs.access("/usr/sbin/ip6tables")
  19
  20 function lock()
  21         os.execute("lock /var/run/luci_splash.lock")
  22 end
  23
  24 function unlock()
  25         os.execute("lock -u /var/run/luci_splash.lock")
  26 end
  27
  28 function exec(cmd)
  29         if debug then
  30                 local ret = sys.exec(cmd)
  31                 print('+ ' .. cmd)
  32                 if ret and ret ~= "" then
  33                         print(ret)
  34                 end
  35         else
  36                 local ret = sys.exec(cmd .. " &> /dev/null")
  37         end
  38 end
  39
  40 function get_id(ip)
  41         local o3, o4 = ip:match("[0-9]+%.[0-9]+%.([0-9]+)%.([0-9]+)")
  42         if o3 and 04 then
  43                 return string.format("%02X%s", tonumber(o3), "") .. string.format("%02X%s", tonumber(o4), "")
  44         else
  45                 return false
  46         end
  47 end
  48
  49 function update_stats(leased, whitelisted, whitelisttotal, blacklisted, blacklisttotal)
  50         local leases = uci:get_all("luci_splash_leases", "stats")
  51         uci:delete("luci_splash_leases", "stats")
  52         uci:section("luci_splash_leases", "stats", "stats", {
  53                 leases    = leased or (leases and leases.leases) or 0,
  54                 whitelisttotal = whitelisttotal or (leased and leases.whitelisttotal) or 0,
  55                 whitelistonline = whitelisted or (leases and leases.whitelistonline) or 0,
  56                 blacklisttotal = blacklisttotal or (leases and leases.blacklisttotal) or 0,
  57                 blacklistonline = blacklisted or (leases and leases.blacklistonline) or 0,
  58         })
  59         uci:save("luci_splash_leases")
  60 end
  61
  62 function get_device_for_ip(ipaddr)
  63         local dev
  64         uci:foreach("network", "interface", function(s)
  65                 if s.ipaddr and s.netmask then
  66                         local network = ip.IPv4(s.ipaddr, s.netmask)
  67                         if network:contains(ip.IPv4(ipaddr)) then
  68                                 -- this should be rewritten to luci functions if possible
  69                                 dev = utl.trim(sys.exec(". /lib/functions/network.sh; network_get_device IFNAME '" ..  s['.name'] .. "'; echo $IFNAME"))
  70                         end
  71                 end
  72         end)
  73         return dev
  74 end
  75
  76 function get_physdev(interface)
  77         local dev
  78         dev = utl.trim(sys.exec(". /lib/functions/network.sh; network_get_device IFNAME '" ..  interface .. "'; echo $IFNAME"))
  79         return dev
  80 end
  81
  82
  83
  84 function get_filter_handle(parent, direction, device, mac)
  85         local input = utl.split(sys.exec('/usr/sbin/tc filter show dev ' .. device .. ' parent ' .. parent) or {})
  86         local tbl = {}
  87         local handle
  88         for k, v in pairs(input) do
  89                 handle = v:match('filter protocol ip pref %d+ u32 fh (%d*:%d*:%d*) order') or v:match('filter protocol all pref %d+ u32 fh (%d*:%d*:%d*) order')
  90                 if handle then
  91                         local mac, mac1, mac2, mac3, mac4, mac5, mac6
  92                         if direction == 'src' then
  93                                 mac1, mac2, mac3, mac4 = input[k+1]:match('match ([%a%d][%a%d])([%a%d][%a%d])([%a%d][%a%d])([%a%d][%a%d])/ffffffff')
  94                                 mac5, mac6 = input[k+2]:match('match ([%a%d][%a%d])([%a%d][%a%d])0000/ffff0000')
  95                         else
  96                                 mac1, mac2 = input[k+1]:match('match 0000([%a%d][%a%d])([%a%d][%a%d])/0000ffff')
  97                                 mac3, mac4, mac5, mac6 = input[k+2]:match('match ([%a%d][%a%d])([%a%d][%a%d])([%a%d][%a%d])([%a%d][%a%d])/ffffffff')
  98                         end
  99                         if mac1 and mac2 and mac3 and mac4 and mac5 and mac6 then
 100                                 mac = "%s:%s:%s:%s:%s:%s" % { mac1, mac2, mac3, mac4, mac5, mac6 }
 101                                 tbl[mac] = handle
 102                         end
 103                 end
 104         end
 105         if tbl[mac] then
 106                 handle = tbl[mac]
 107         end
 108         return handle
 109 end
 110
 111 function macvalid(mac)
 112         if mac and mac:match(
 113                 "^[a-fA-F0-9][a-fA-F0-9]:[a-fA-F0-9][a-fA-F0-9]:" ..
 114                 "[a-fA-F0-9][a-fA-F0-9]:[a-fA-F0-9][a-fA-F0-9]:" ..
 115                 "[a-fA-F0-9][a-fA-F0-9]:[a-fA-F0-9][a-fA-F0-9]$"
 116         ) then
 117                 return true
 118         end
 119
 120         return false
 121 end
 122
 123 function ipvalid(ipaddr)
 124         if ipaddr then
 125                 return ip.IPv4(ipaddr) and true or false
 126         end
 127
 128         return false
 129 end
 130
 131 function main(argv)
 132         local cmd = table.remove(argv, 1)
 133         local arg = argv[1]
 134
 135         limit_up = (tonumber(uci:get("luci_splash", "general", "limit_up")) or 0) * 8
 136         limit_down = (tonumber(uci:get("luci_splash", "general", "limit_down")) or 0) * 8
 137
 138         if ( cmd == "lease" or cmd == "add-rules" or cmd == "remove" or
 139              cmd == "whitelist" or cmd == "blacklist" or cmd == "status" ) and #argv > 0
 140         then
 141                 if not (macvalid(arg) or ipvalid(arg)) then
 142                         print("Invalid argument. The second argument must " ..
 143                                 "be a valid IPv4 or Mac Address.")
 144                         os.exit(1)
 145                 end
 146
 147                 lock()
 148
 149                 local arp_cache      = net.arptable()
 150                 local leased_macs    = get_known_macs("lease")
 151                 local blacklist_macs = get_known_macs("blacklist")
 152                 local whitelist_macs = get_known_macs("whitelist")
 153
 154                 for i, adr in ipairs(argv) do
 155                         local mac = nil
 156                         if adr:find(":") then
 157                                 mac = adr:lower()
 158                         else
 159                                 for _, e in ipairs(arp_cache) do
 160                                         if e["IP address"] == adr then
 161                                                 mac = e["HW address"]:lower()
 162                                                 break
 163                                         end
 164                                 end
 165                         end
 166
 167                         if mac and cmd == "add-rules" then
 168                                 if leased_macs[mac] then
 169                                         add_lease(mac, arp_cache, true)
 170                                 elseif blacklist_macs[mac] then
 171                                         add_blacklist_rule(mac)
 172                                 elseif whitelist_macs[mac] then
 173                                         add_whitelist_rule(mac)
 174                                 end
 175                         elseif mac and cmd == "status" then
 176                                 print(leased_macs[mac] and "lease"
 177                                         or whitelist_macs[mac] and "whitelist"
 178                                         or blacklist_macs[mac] and "blacklist"
 179                                         or "new")
 180                         elseif mac and ( cmd == "whitelist" or cmd == "blacklist" or cmd == "lease" ) then
 181                                 if cmd ~= "lease" and leased_macs[mac] then
 182                                         print("Removing %s from leases" % mac)
 183                                         remove_lease(mac)
 184                                         leased_macs[mac] = nil
 185                                 end
 186
 187                                 if cmd ~= "whitelist" and whitelist_macs[mac] then
 188                                         if cmd == "lease" then
 189                                                 print('%s is whitelisted. Remove it before you can lease it.' % mac)
 190                                         else
 191                                                 print("Removing %s from whitelist" % mac)
 192                                                 remove_whitelist(mac)
 193                                                 whitelist_macs[mac] = nil
 194                                         end
 195                                 end
 196
 197                                 if cmd == "whitelist" and leased_macs[mac] then
 198                                         print("Removing %s from leases" % mac)
 199                                         remove_lease(mac)
 200                                         leased_macs[mac] = nil
 201                                 end
 202
 203                                 if cmd ~= "blacklist" and blacklist_macs[mac] then
 204                                         print("Removing %s from blacklist" % mac)
 205                                         remove_blacklist(mac)
 206                                         blacklist_macs[mac] = nil
 207                                 end
 208
 209                                 if cmd == "lease" and not leased_macs[mac] then
 210                                         if not whitelist_macs[mac] then
 211                                                 print("Adding %s to leases" % mac)
 212                                                 add_lease(mac)
 213                                                 leased_macs[mac] = true
 214                                         end
 215                                 elseif cmd == "whitelist" and not whitelist_macs[mac] then
 216                                         print("Adding %s to whitelist" % mac)
 217                                         add_whitelist(mac)
 218                                         whitelist_macs[mac] = true
 219                                 elseif cmd == "blacklist" and not blacklist_macs[mac] then
 220                                         print("Adding %s to blacklist" % mac)
 221                                         add_blacklist(mac)
 222                                         blacklist_macs[mac] = true
 223                                 else
 224                                         print("The mac %s is already %sed" %{ mac, cmd })
 225                                 end
 226                         elseif mac and cmd == "remove" then
 227                                 if leased_macs[mac] then
 228                                         print("Removing %s from leases" % mac)
 229                                         remove_lease(mac)
 230                                         leased_macs[mac] = nil
 231                                 elseif whitelist_macs[mac] then
 232                                         print("Removing %s from whitelist" % mac)
 233                                         remove_whitelist(mac)
 234                                         whitelist_macs[mac] = nil
 235                                 elseif blacklist_macs[mac] then
 236                                         print("Removing %s from blacklist" % mac)
 237                                         remove_blacklist(mac)
 238                                         blacklist_macs[mac] = nil
 239                                 else
 240                                         print("The mac %s is not known" % mac)
 241                                 end
 242                         else
 243                                 print("Can not find mac for ip %s" % argv[i])
 244                         end
 245                 end
 246
 247                 unlock()
 248                 os.exit(0)
 249         elseif cmd == "sync" then
 250                 sync()
 251                 os.exit(0)
 252         elseif cmd == "list" then
 253                 list()
 254                 os.exit(0)
 255         else
 256                 print("Usage:")
 257                 print("\n  luci-splash list\n    List connected, black- and whitelisted clients")
 258                 print("\n  luci-splash sync\n    Synchronize firewall rules and clear expired leases")
 259                 print("\n  luci-splash lease <MAC-or-IP>\n    Create a lease for the given address")
 260                 print("\n  luci-splash blacklist <MAC-or-IP>\n    Add given address to blacklist")
 261                 print("\n  luci-splash whitelist <MAC-or-IP>\n    Add given address to whitelist")
 262                 print("\n  luci-splash remove <MAC-or-IP>\n    Remove given address from the lease-, black- or whitelist")
 263                 print("")
 264
 265                 os.exit(1)
 266         end
 267 end
 268
 269 -- Get current arp cache
 270 function get_arpcache()
 271         local arpcache = { }
 272         for _, entry in ipairs(net.arptable()) do
 273                 arpcache[entry["HW address"]:lower()] = { entry["Device"]:lower(), entry["IP address"]:lower() }
 274         end
 275         return arpcache
 276 end
 277
 278 -- Get a list of known mac addresses
 279 function get_known_macs(list)
 280         local leased_macs = { }
 281
 282         if not list or list == "lease" then
 283                 uci:foreach("luci_splash_leases", "lease",
 284                         function(s) leased_macs[s.mac:lower()] = true end)
 285         end
 286
 287         if not list or list == "whitelist" then
 288                 uci:foreach("luci_splash", "whitelist",
 289                         function(s) leased_macs[s.mac:lower()] = true end)
 290         end
 291
 292         if not list or list == "blacklist" then
 293                 uci:foreach("luci_splash", "blacklist",
 294                         function(s) leased_macs[s.mac:lower()] = true end)
 295         end
 296
 297         return leased_macs
 298 end
 299
 300
 301 -- Helper to delete iptables rules
 302 function ipt_delete_all(args, comp, off)
 303         off = off or { }
 304         for i, r in ipairs(ipt:find(args)) do
 305                 if comp == nil or comp(r) then
 306                         off[r.table] = off[r.table] or { }
 307                         off[r.table][r.chain] = off[r.table][r.chain] or 0
 308
 309                         exec("iptables -t %q -D %q %d 2>/dev/null"
 310                                 %{ r.table, r.chain, r.index - off[r.table][r.chain] })
 311
 312                         off[r.table][r.chain] = off[r.table][r.chain] + 1
 313                 end
 314         end
 315 end
 316
 317 function ipt6_delete_all(args, comp, off)
 318         off = off or { }
 319         for i, r in ipairs(ipt:find(args)) do
 320                 if comp == nil or comp(r) then
 321                         off[r.table] = off[r.table] or { }
 322                         off[r.table][r.chain] = off[r.table][r.chain] or 0
 323
 324                         exec("ip6tables -t %q -D %q %d 2>/dev/null"
 325                                 %{ r.table, r.chain, r.index - off[r.table][r.chain] })
 326
 327                         off[r.table][r.chain] = off[r.table][r.chain] + 1
 328                 end
 329         end
 330 end
 331
 332
 333 -- Convert mac to uci-compatible section name
 334 function convert_mac_to_secname(mac)
 335         return string.gsub(mac, ":", "")
 336 end
 337
 338 -- Add a lease to state and invoke add_rule
 339 function add_lease(mac, arp, no_uci)
 340         mac = mac:lower()
 341
 342         -- Get current ip address
 343         local ipaddr
 344         for _, entry in ipairs(arp or net.arptable()) do
 345                 if entry["HW address"]:lower() == mac then
 346                         ipaddr = entry["IP address"]
 347                         break
 348                 end
 349         end
 350
 351         -- Add lease if there is an ip addr
 352         if ipaddr then
 353                 local device = get_device_for_ip(ipaddr)
 354                 if not no_uci then
 355                         local leased = uci:get("luci_splash_leases", "stats", "leases")
 356                         if type(tonumber(leased)) == "number" then
 357                                 update_stats(leased + 1, nil, nil, nil, nil)
 358                         end
 359
 360                         uci:section("luci_splash_leases", "lease", convert_mac_to_secname(mac), {
 361                                 mac    = mac,
 362                                 ipaddr = ipaddr,
 363                                 device = device,
 364                                 limit_up = limit_up,
 365                                 limit_down = limit_down,
 366                                 start  = os.time()
 367                         })
 368                         uci:save("luci_splash_leases")
 369                 end
 370                 add_lease_rule(mac, ipaddr, device)
 371         else
 372                 print("Found no active IP for %s, lease not added" % mac)
 373         end
 374 end
 375
 376
 377 -- Remove a lease from state and invoke remove_rule
 378 function remove_lease(mac)
 379         mac = mac:lower()
 380
 381         uci:delete_all("luci_splash_leases", "lease",
 382                 function(s)
 383                         if s.mac:lower() == mac then
 384                                 remove_lease_rule(mac, s.ipaddr, s.device, tonumber(s.limit_up), tonumber(s.limit_down))
 385                                 local leased = uci:get("luci_splash_leases", "stats", "leases")
 386                                 if type(tonumber(leased)) == "number" and tonumber(leased) > 0 then
 387                                         update_stats(leased - 1, nil, nil, nil, nil)
 388                                 end
 389                                 return true
 390                         end
 391                         return false
 392                 end)
 393
 394         uci:save("luci_splash_leases")
 395 end
 396
 397
 398 -- Add a whitelist entry
 399 function add_whitelist(mac)
 400         uci:section("luci_splash", "whitelist", convert_mac_to_secname(mac), { mac = mac })
 401         uci:save("luci_splash")
 402         uci:commit("luci_splash")
 403         add_whitelist_rule(mac)
 404 end
 405
 406
 407 -- Add a blacklist entry
 408 function add_blacklist(mac)
 409         uci:section("luci_splash", "blacklist", convert_mac_to_secname(mac), { mac = mac })
 410         uci:save("luci_splash")
 411         uci:commit("luci_splash")
 412         add_blacklist_rule(mac)
 413 end
 414
 415
 416 -- Remove a whitelist entry
 417 function remove_whitelist(mac)
 418         mac = mac:lower()
 419         uci:delete_all("luci_splash", "whitelist",
 420                 function(s) return not s.mac or s.mac:lower() == mac end)
 421         uci:save("luci_splash")
 422         uci:commit("luci_splash")
 423         remove_lease_rule(mac)
 424         remove_whitelist_tc(mac)
 425 end
 426
 427 function remove_whitelist_tc(mac)
 428         uci:foreach("luci_splash", "iface", function(s)
 429                 local device = get_physdev(s['.name'])
 430                 if device and device ~= "" then
 431                         if debug then
 432                                 print("Removing whitelist filters for %s interface %s." % {mac, device})
 433                         end
 434                         local handle = get_filter_handle('ffff:', 'src', device, mac)
 435                         if handle then
 436                                 exec('tc filter del dev "%s" parent ffff: protocol ip prio 1 handle %s u32' % { device, handle })
 437                         else
 438                                 print('Warning! Could not get a handle for %s parent :ffff on interface %s' % { mac, device })
 439                         end
 440                         local handle = get_filter_handle('1:', 'dest', device, mac)
 441                         if handle then
 442                                 exec('tc filter del dev "%s" parent 1:0 protocol ip prio 1 handle %s u32' % { device, handle })
 443                         else
 444                                 print('Warning! Could not get a handle for %s parent 1:0 on interface %s' % { mac, device })
 445                         end
 446                 end
 447         end)
 448 end
 449
 450 -- Remove a blacklist entry
 451 function remove_blacklist(mac)
 452         mac = mac:lower()
 453         uci:delete_all("luci_splash", "blacklist",
 454                 function(s) return not s.mac or s.mac:lower() == mac end)
 455         uci:save("luci_splash")
 456         uci:commit("luci_splash")
 457         remove_lease_rule(mac)
 458 end
 459
 460
 461 -- Add an iptables rule
 462 function add_lease_rule(mac, ipaddr, device)
 463         local id
 464         if ipaddr then
 465                 id = get_id(ipaddr)
 466         end
 467
 468         exec("iptables -t mangle -I luci_splash_mark_out -m mac --mac-source %q -j RETURN" % mac)
 469
 470         -- Mark incoming packets to a splashed host
 471         -- for ipv4 - by iptables and destination
 472         if id and device then
 473                 exec("iptables -t mangle -I luci_splash_mark_in -d %q -j MARK --set-mark 0x1%s -m comment --comment %s" % {ipaddr, id, mac:upper()})
 474         end
 475
 476         --for ipv6: need to use the mac here
 477         if has_ipv6 then
 478                 exec("ip6tables -t mangle -I luci_splash_mark_out -m mac --mac-source %q -j MARK --set-mark 79" % mac)
 479                 if id and device and tonumber(limit_down) then
 480                         exec("tc filter add dev %s parent 1:0 protocol ipv6 prio 1 u32 match ether dst %s classid 1:%s" % {device, mac:lower(), id})
 481                 end
 482         end
 483
 484
 485         if device and tonumber(limit_up) > 0 then
 486                 exec('tc filter add dev "%s" parent ffff: protocol all prio 2 u32 match ether src %s police rate %skbit mtu 6k burst 6k drop' % {device, mac, limit_up})
 487         end
 488
 489         if id and device and tonumber(limit_down) > 0 then
 490                 exec("tc class add dev %s parent 1: classid 1:0x%s htb rate %skbit" % { device, id, limit_down })
 491                 exec("tc qdisc add dev %s parent 1:%s sfq perturb 10" % { device, id })
 492         end
 493
 494         exec("iptables -t filter -I luci_splash_filter -m mac --mac-source %q -j RETURN" % mac)
 495         exec("iptables -t nat    -I luci_splash_leases -m mac --mac-source %q -j RETURN" % mac)
 496         if has_ipv6 then
 497                 exec("ip6tables -t filter -I luci_splash_filter -m mac --mac-source %q -j RETURN" % mac)
 498         end
 499 end
 500
 501
 502 -- Remove lease, black- or whitelist rules
 503 function remove_lease_rule(mac, ipaddr, device, limit_up, limit_down)
 504         local id
 505         if ipaddr then
 506                 id = get_id(ipaddr)
 507         end
 508
 509         ipt:resync()
 510         ipt_delete_all({table="mangle", chain="luci_splash_mark_in", options={"/*", mac:upper()}})
 511         ipt_delete_all({table="mangle", chain="luci_splash_mark_out", options={"MAC", mac:upper()}})
 512         ipt_delete_all({table="filter", chain="luci_splash_filter",   options={"MAC", mac:upper()}})
 513         ipt_delete_all({table="nat",    chain="luci_splash_leases",   options={"MAC", mac:upper()}})
 514         if has_ipv6 then
 515                 ipt6_delete_all({table="mangle", chain="luci_splash_mark_out", options={"MAC", mac:upper()}})
 516                 ipt6_delete_all({table="filter", chain="luci_splash_filter",   options={"MAC", mac:upper()}})
 517         end
 518
 519         if device and tonumber(limit_up) > 0 then
 520                 local handle = get_filter_handle('ffff:', 'src', device, mac)
 521                 if handle then
 522                         exec('tc filter del dev "%s" parent ffff: protocol all prio 2 handle %s u32 police rate %skbit mtu 6k burst 6k drop' % {device, handle, limit_up})
 523                 else
 524                         print('Warning! Could not get a handle for %s parent :ffff on interface %s' % { mac, device })
 525                 end
 526         end
 527
 528         -- remove clients class
 529         if device and id then
 530                 exec('tc class del dev "%s" classid 1:%s' % {device, id})
 531                 exec('tc filter del dev "%s" parent 1:0 prio 1' % device) -- ipv6 rule
 532                 --exec('tc qdisc del dev "%s" parent 1:%s sfq perturb 10' % { device, id })
 533         end
 534
 535 end
 536
 537
 538 -- Add whitelist rules
 539 function add_whitelist_rule(mac)
 540         exec("iptables -t filter -I luci_splash_filter -m mac --mac-source %q -j RETURN" % mac)
 541         exec("iptables -t nat    -I luci_splash_leases -m mac --mac-source %q -j RETURN" % mac)
 542         if has_ipv6 then
 543                 exec("ip6tables -t filter -I luci_splash_filter -m mac --mac-source %q -j RETURN" % mac)
 544         end
 545         uci:foreach("luci_splash", "iface", function(s)
 546                 local device = get_physdev(s['.name'])
 547                 if device and device ~= "" then
 548                         exec('tc filter add dev "%s" parent ffff: protocol ip prio 1 u32 match ether src %s police pass' % { device, mac })
 549                         exec('tc filter add dev "%s" parent 1:0 protocol ip prio 1 u32 match ether dst %s classid 1:1' % { device, mac })
 550                 end
 551         end)
 552 end
 553
 554
 555 -- Add blacklist rules
 556 function add_blacklist_rule(mac)
 557         exec("iptables -t filter -I luci_splash_filter -m mac --mac-source %q -j DROP" % mac)
 558         if has_ipv6 then
 559                 exec("ip6tables -t filter -I luci_splash_filter -m mac --mac-source %q -j DROP" % mac)
 560         end
 561 end
 562
 563
 564 -- Synchronise leases, remove abandoned rules
 565 function sync()
 566         lock()
 567
 568         local time = os.time()
 569
 570         -- Current leases in state files
 571         local leases = uci:get_all("luci_splash_leases")
 572
 573         -- Convert leasetime to seconds
 574         local leasetime = tonumber(uci:get("luci_splash", "general", "leasetime")) * 3600
 575
 576         -- Clean state file
 577         uci:load("luci_splash_leases")
 578         uci:revert("luci_splash_leases")
 579
 580
 581         -- Get the mac addresses of current leases
 582         local macs = get_known_macs()
 583         local arpcache = get_arpcache()
 584
 585         local blackwhitelist = uci:get_all("luci_splash")
 586         local whitelist_total = 0
 587         local whitelist_online = 0
 588         local blacklist_total = 0
 589         local blacklist_online = 0
 590
 591
 592         -- For all leases
 593         local leasecount = 0
 594         local leases_online = 0
 595         for k, v in pairs(leases) do
 596                 if v[".type"] == "lease" then
 597                         if os.difftime(time, tonumber(v.start)) > leasetime then
 598                                 -- Remove expired
 599                                 remove_lease_rule(v.mac, v.ipaddr, v.device, tonumber(v.limit_up), tonumber(v.limit_down))
 600                         else
 601                                 leasecount = leasecount + 1
 602
 603                                 -- only count leases_online for connected clients
 604                                 if arpcache[v.mac] then
 605                                     leases_online = leases_online + 1
 606                                 end
 607
 608                                 -- Rewrite state
 609                                 uci:section("luci_splash_leases", "lease", convert_mac_to_secname(v.mac), {
 610                                         mac    = v.mac,
 611                                         ipaddr = v.ipaddr,
 612                                         device = v.device,
 613                                         limit_up = limit_up,
 614                                         limit_down = limit_down,
 615                                         start  = v.start
 616                                 })
 617                         end
 618                 end
 619         end
 620
 621         -- Whitelist, Blacklist
 622         for _, s in utl.spairs(blackwhitelist,
 623                 function(a,b) return blackwhitelist[a][".type"] > blackwhitelist[b][".type"] end
 624         ) do
 625                 if (s[".type"] == "whitelist") then
 626                         whitelist_total = whitelist_total + 1
 627                         if s.mac then
 628                                 local mac = s.mac:lower()
 629                                 if arpcache[mac] then
 630                                         whitelist_online = whitelist_online + 1
 631                                 end
 632                         end
 633                 end
 634                 if (s[".type"] == "blacklist") then
 635                         blacklist_total = blacklist_total + 1
 636                         if s.mac then
 637                                 local mac = s.mac:lower()
 638                                 if arpcache[mac] then
 639                                         blacklist_online = blacklist_online + 1
 640                                 end
 641                         end
 642                 end
 643         end
 644
 645         -- ToDo:
 646         -- include a new field "leases_online" in stats to differ between active clients and leases:
 647         -- update_stats(leasecount, leases_online, whitelist_online, whitelist_total, blacklist_online, blacklist_total) later:
 648         update_stats(leases_online, whitelist_online, whitelist_total, blacklist_online, blacklist_total)
 649
 650         uci:save("luci_splash_leases")
 651
 652         ipt:resync()
 653
 654         ipt_delete_all({table="filter", chain="luci_splash_filter", options={"MAC"}},
 655                 function(r) return not macs[r.options[2]:lower()] end)
 656         ipt_delete_all({table="nat", chain="luci_splash_leases", options={"MAC"}},
 657                 function(r) return not macs[r.options[2]:lower()] end)
 658         ipt_delete_all({table="mangle", chain="luci_splash_mark_out", options={"MAC", "MARK", "set"}},
 659                 function(r) return not macs[r.options[2]:lower()] end)
 660         ipt_delete_all({table="mangle", chain="luci_splash_mark_in", options={"/*", "MARK", "set"}},
 661                 function(r) return not macs[r.options[2]:lower()] end)
 662
 663
 664         if has_ipv6 then
 665                 ipt6_delete_all({table="filter", chain="luci_splash_filter", options={"MAC"}},
 666                         function(r) return not macs[r.options[2]:lower()] end)
 667                 ipt6_delete_all({table="mangle", chain="luci_splash_mark_out", options={"MAC", "MARK", "set"}},
 668                         function(r) return not macs[r.options[2]:lower()] end)
 669         end
 670
 671         unlock()
 672 end
 673
 674 -- Show client info
 675 function list()
 676         local arpcache = get_arpcache()
 677         -- Find traffic usage
 678         local function traffic(lease)
 679                 local traffic_in  = 0
 680                 local traffic_out = 0
 681
 682                 local rin  = ipt:find({table="mangle", chain="luci_splash_mark_in", destination=lease.ipaddr})
 683                 local rout = ipt:find({table="mangle", chain="luci_splash_mark_out", options={"MAC", lease.mac:upper()}})
 684
 685                 if rin  and #rin  > 0 then traffic_in  = math.floor( rin[1].bytes / 1024) end
 686                 if rout and #rout > 0 then traffic_out = math.floor(rout[1].bytes / 1024) end
 687
 688                 return traffic_in, traffic_out
 689         end
 690
 691         -- Print listings
 692         local leases = uci:get_all("luci_splash_leases")
 693         local blackwhitelist = uci:get_all("luci_splash")
 694
 695         print(string.format(
 696                 "%-17s  %-15s  %-9s  %-4s  %-7s  %20s",
 697                 "MAC", "IP", "State", "Dur.", "Intf.", "Traffic down/up"
 698         ))
 699
 700         -- Leases
 701         for _, s in pairs(leases) do
 702                 if s[".type"] == "lease" and s.mac then
 703                         local ti, to = traffic(s)
 704                         local mac = s.mac:lower()
 705                         local arp = arpcache[mac]
 706                         print(string.format(
 707                                 "%-17s  %-15s  %-9s  %3dm  %-7s  %7dKB  %7dKB",
 708                                 mac, s.ipaddr, "leased",
 709                                 math.floor(( os.time() - tonumber(s.start) ) / 60),
 710                                 arp and arp[1] or "?", ti, to
 711                         ))
 712                 end
 713         end
 714
 715         -- Whitelist, Blacklist
 716         for _, s in utl.spairs(blackwhitelist,
 717                 function(a,b) return blackwhitelist[a][".type"] > blackwhitelist[b][".type"] end
 718         ) do
 719                 if (s[".type"] == "whitelist" or s[".type"] == "blacklist") and s.mac then
 720                         local mac = s.mac:lower()
 721                         local arp = arpcache[mac]
 722                         print(string.format(
 723                                 "%-17s  %-15s  %-9s  %4s  %-7s  %9s  %9s",
 724                                 mac, arp and arp[2] or "?", s[".type"],
 725                                 "- ", arp and arp[1] or "?", "-", "-"
 726                         ))
 727                 end
 728         end
 729 end
 730
 731 main(arg)