#!/usr/bin/lua
-require("luci.http")
require("luci.util")
require("luci.model.uci")
+require("luci.sys")
+require("luci.sys.iptparser")
-- Init state session
-luci.model.uci.load_state("luci_splash")
-local uci = luci.model.uci
+local uci = luci.model.uci.cursor_state()
+local ipt = luci.sys.iptparser.IptParser()
+local net = luci.sys.net
+local fs = require "luci.fs"
+local limit_up = 0
+local limit_down = 0
+
+local has_ipv6 = fs.access("/proc/net/ipv6_route") and fs.access("/usr/sbin/ip6tables")
+
+function lock()
+ os.execute("lock /var/run/luci_splash.lock")
+end
+
+function unlock()
+ os.execute("lock -u /var/run/luci_splash.lock")
+end
function main(argv)
- local cmd = argv[1]
- local arg = argv[2]
-
- if cmd == "status" then
- if not arg then
- os.exit(1)
- end
-
- if iswhitelisted(arg) then
- print("whitelisted")
- os.exit(0)
- end
-
- if haslease(arg) then
- print("lease")
- os.exit(0)
- end
-
- print("unknown")
- os.exit(0)
- elseif cmd == "add" then
- if not arg then
- os.exit(1)
- end
-
- if not haslease(arg) then
- add_lease(arg)
- else
- print("already leased!")
- os.exit(2)
- end
- os.exit(0)
- elseif cmd == "remove" then
- if not arg then
- os.exit(1)
+ local cmd = table.remove(argv, 1)
+ local arg = argv[1]
+
+ limit_up = tonumber(uci:get("luci_splash", "general", "limit_up")) or 0
+ limit_down = tonumber(uci:get("luci_splash", "general", "limit_down")) or 0
+
+ if ( cmd == "lease" or cmd == "add-rules" or cmd == "remove" or
+ cmd == "whitelist" or cmd == "blacklist" or cmd == "status" ) and #argv > 0
+ then
+ lock()
+
+ local arp_cache = net.arptable()
+ local leased_macs = get_known_macs("lease")
+ local blacklist_macs = get_known_macs("blacklist")
+ local whitelist_macs = get_known_macs("whitelist")
+
+ for i, adr in ipairs(argv) do
+ local mac = nil
+ if adr:find(":") then
+ mac = adr:lower()
+ else
+ for _, e in ipairs(arp_cache) do
+ if e["IP address"] == adr then
+ mac = e["HW address"]:lower()
+ break
+ end
+ end
+ end
+
+ if mac and cmd == "add-rules" then
+ if leased_macs[mac] then
+ add_lease(mac, arp_cache, true)
+ elseif blacklist_macs[mac] then
+ add_blacklist_rule(mac)
+ elseif whitelist_macs[mac] then
+ add_whitelist_rule(mac)
+ end
+ elseif mac and cmd == "status" then
+ print(leased_macs[mac] and "lease"
+ or whitelist_macs[mac] and "whitelist"
+ or blacklist_macs[mac] and "blacklist"
+ or "new")
+ elseif mac and ( cmd == "whitelist" or cmd == "blacklist" or cmd == "lease" ) then
+ if cmd ~= "lease" and leased_macs[mac] then
+ print("Removing %s from leases" % mac)
+ remove_lease(mac)
+ leased_macs[mac] = nil
+ end
+
+ if cmd ~= "whitelist" and whitelist_macs[mac] then
+ print("Removing %s from whitelist" % mac)
+ remove_whitelist(mac)
+ whitelist_macs[mac] = nil
+ end
+
+ if cmd ~= "blacklist" and blacklist_macs[mac] then
+ print("Removing %s from blacklist" % mac)
+ remove_blacklist(mac)
+ blacklist_macs[mac] = nil
+ end
+
+ if cmd == "lease" and not leased_macs[mac] then
+ print("Adding %s to leases" % mac)
+ add_lease(mac)
+ leased_macs[mac] = true
+ elseif cmd == "whitelist" and not whitelist_macs[mac] then
+ print("Adding %s to whitelist" % mac)
+ add_whitelist(mac)
+ whitelist_macs[mac] = true
+ elseif cmd == "blacklist" and not blacklist_macs[mac] then
+ print("Adding %s to blacklist" % mac)
+ add_blacklist(mac)
+ blacklist_macs[mac] = true
+ else
+ print("The mac %s is already %sed" %{ mac, cmd })
+ end
+ elseif mac and cmd == "remove" then
+ if leased_macs[mac] then
+ print("Removing %s from leases" % mac)
+ remove_lease(mac)
+ leased_macs[mac] = nil
+ elseif whitelist_macs[mac] then
+ print("Removing %s from whitelist" % mac)
+ remove_whitelist(mac)
+ whitelist_macs[mac] = nil
+ elseif blacklist_macs[mac] then
+ print("Removing %s from blacklist" % mac)
+ remove_blacklist(mac)
+ blacklist_macs[mac] = nil
+ else
+ print("The mac %s is not known" % mac)
+ end
+ else
+ print("Can not find mac for ip %s" % argv[i])
+ end
end
-
- remove_lease(arg)
- os.exit(0)
+
+ unlock()
+ os.exit(0)
elseif cmd == "sync" then
sync()
os.exit(0)
+ elseif cmd == "list" then
+ list()
+ os.exit(0)
else
- print("Usage: " .. argv[0] .. " <status|add|remove|sync> [MAC]")
+ print("Usage:")
+ print("\n luci-splash list\n List connected, black- and whitelisted clients")
+ print("\n luci-splash sync\n Synchronize firewall rules and clear expired leases")
+ print("\n luci-splash lease <MAC-or-IP>\n Create a lease for the given address")
+ print("\n luci-splash blacklist <MAC-or-IP>\n Add given address to blacklist")
+ print("\n luci-splash whitelist <MAC-or-IP>\n Add given address to whitelist")
+ print("\n luci-splash remove <MAC-or-IP>\n Remove given address from the lease-, black- or whitelist")
+ print("")
+
os.exit(1)
end
end
+-- Get a list of known mac addresses
+function get_known_macs(list)
+ local leased_macs = { }
+
+ if not list or list == "lease" then
+ uci:foreach("luci_splash", "lease",
+ function(s) leased_macs[s.mac:lower()] = true end)
+ end
+
+ if not list or list == "whitelist" then
+ uci:foreach("luci_splash", "whitelist",
+ function(s) leased_macs[s.mac:lower()] = true end)
+ end
+
+ if not list or list == "blacklist" then
+ uci:foreach("luci_splash", "blacklist",
+ function(s) leased_macs[s.mac:lower()] = true end)
+ end
+
+ return leased_macs
+end
+
+
+-- Get a list of known ip addresses
+function get_known_ips(macs, arp)
+ local leased_ips = { }
+ if not macs then macs = get_known_macs() end
+ for _, e in ipairs(arp or net.arptable()) do
+ if macs[e["HW address"]:lower()] then leased_ips[e["IP address"]] = true end
+ end
+ return leased_ips
+end
+
+
+-- Helper to delete iptables rules
+function ipt_delete_all(args, comp, off)
+ off = off or { }
+ for i, r in ipairs(ipt:find(args)) do
+ if comp == nil or comp(r) then
+ off[r.table] = off[r.table] or { }
+ off[r.table][r.chain] = off[r.table][r.chain] or 0
+
+ os.execute("iptables -t %q -D %q %d 2>/dev/null"
+ %{ r.table, r.chain, r.index - off[r.table][r.chain] })
+
+ off[r.table][r.chain] = off[r.table][r.chain] + 1
+ end
+ end
+end
+
+function ipt6_delete_all(args, comp, off)
+ off = off or { }
+ for i, r in ipairs(ipt:find(args)) do
+ if comp == nil or comp(r) then
+ off[r.table] = off[r.table] or { }
+ off[r.table][r.chain] = off[r.table][r.chain] or 0
+
+ os.execute("ip6tables -t %q -D %q %d 2>/dev/null"
+ %{ r.table, r.chain, r.index - off[r.table][r.chain] })
+
+ off[r.table][r.chain] = off[r.table][r.chain] + 1
+ end
+ end
+end
+
+
+-- Convert mac to uci-compatible section name
+function convert_mac_to_secname(mac)
+ return string.gsub(mac, ":", "")
+end
+
-- Add a lease to state and invoke add_rule
-function add_lease(mac)
- uci.section("luci_splash", "lease", nil, {
- mac = mac,
- start = os.time()
- })
- add_rule(mac)
-
- uci.save_state("luci_splash")
+function add_lease(mac, arp, no_uci)
+ mac = mac:lower()
+
+ -- Get current ip address
+ local ipaddr
+ for _, entry in ipairs(arp or net.arptable()) do
+ if entry["HW address"]:lower() == mac then
+ ipaddr = entry["IP address"]
+ break
+ end
+ end
+
+ -- Add lease if there is an ip addr
+ if ipaddr then
+ if not no_uci then
+ uci:section("luci_splash", "lease", convert_mac_to_secname(mac), {
+ mac = mac,
+ ipaddr = ipaddr,
+ start = os.time()
+ })
+ uci:save("luci_splash")
+ end
+ add_lease_rule(mac, ipaddr)
+ else
+ print("Found no active IP for %s, lease not added" % mac)
+ end
end
-- Remove a lease from state and invoke remove_rule
function remove_lease(mac)
mac = mac:lower()
- local del = {}
- uci.foreach("luci_splash", "lease",
- function (section)
- if section.mac:lower() == mac then
- table.insert(del, section[".name"])
+ uci:delete_all("luci_splash", "lease",
+ function(s)
+ if s.mac:lower() == mac then
+ remove_lease_rule(mac, s.ipaddr)
+ return true
end
+ return false
end)
- for i,j in ipairs(del) do
- remove_rule(j)
- uci.delete("luci_splash", j)
- end
-
- uci.save_state("luci_splash")
+ uci:save("luci_splash")
end
--- Add an iptables rule
-function add_rule(mac)
- return os.execute("iptables -t nat -I luci_splash_leases -m mac --mac-source '"..mac.."' -j RETURN")
+-- Add a whitelist entry
+function add_whitelist(mac)
+ uci:section("luci_splash", "whitelist", convert_mac_to_secname(mac), { mac = mac })
+ uci:save("luci_splash")
+ uci:commit("luci_splash")
+ add_whitelist_rule(mac)
end
--- Remove an iptables rule
-function remove_rule(mac)
- return os.execute("iptables -t nat -D luci_splash_leases -m mac --mac-source '"..mac.."' -j RETURN")
+-- Add a blacklist entry
+function add_blacklist(mac)
+ uci:section("luci_splash", "blacklist", convert_mac_to_secname(mac), { mac = mac })
+ uci:save("luci_splash")
+ uci:commit("luci_splash")
+ add_blacklist_rule(mac)
end
--- Check whether a MAC-Address is listed in the lease state list
-function haslease(mac)
+-- Remove a whitelist entry
+function remove_whitelist(mac)
mac = mac:lower()
- local stat = false
-
- uci.foreach("luci_splash", "lease",
- function (section)
- if section.mac:lower() == mac then
- stat = true
- return
- end
- end)
-
- return stat
+ uci:delete_all("luci_splash", "whitelist",
+ function(s) return not s.mac or s.mac:lower() == mac end)
+ uci:save("luci_splash")
+ uci:commit("luci_splash")
+ remove_lease_rule(mac)
end
--- Check whether a MAC-Address is whitelisted
-function iswhitelisted(mac)
+-- Remove a blacklist entry
+function remove_blacklist(mac)
mac = mac:lower()
-
- uci.foreach("luci_splash", "whitelist",
- function (section)
- if section.mac:lower() == mac then
- stat = true
- return
- end
- end)
-
- return false
+ uci:delete_all("luci_splash", "blacklist",
+ function(s) return not s.mac or s.mac:lower() == mac end)
+ uci:save("luci_splash")
+ uci:commit("luci_splash")
+ remove_lease_rule(mac)
+end
+
+
+-- Add an iptables rule
+function add_lease_rule(mac, ipaddr)
+ os.execute("iptables -t mangle -I luci_splash_mark_out -m mac --mac-source %q -j MARK --set-mark 79" % mac)
+ os.execute("iptables -t mangle -I luci_splash_mark_in -d %q -j MARK --set-mark 80" % ipaddr)
+ if has_ipv6 then
+ os.execute("ip6tables -t mangle -I luci_splash_mark_out -m mac --mac-source %q -j MARK --set-mark 79" % mac)
+ os.execute("ip6tables -t mangle -I luci_splash_mark_in -d %q -j MARK --set-mark 80" % ipaddr)
+ end
+
+
+ os.execute("iptables -t filter -I luci_splash_filter -m mac --mac-source %q -j RETURN" % mac)
+ os.execute("iptables -t nat -I luci_splash_leases -m mac --mac-source %q -j RETURN" % mac)
+ if has_ipv6 then
+ os.execute("ip6tables -t filter -I luci_splash_filter -m mac --mac-source %q -j RETURN" % mac)
+ end
+end
+
+
+-- Remove lease, black- or whitelist rules
+function remove_lease_rule(mac, ipaddr)
+ ipt:resync()
+
+ if ipaddr then
+ ipt_delete_all({table="mangle", chain="luci_splash_mark_in", destination=ipaddr})
+ ipt_delete_all({table="mangle", chain="luci_splash_mark_out", options={"MAC", mac:upper()}})
+ end
+
+ ipt_delete_all({table="filter", chain="luci_splash_filter", options={"MAC", mac:upper()}})
+ ipt_delete_all({table="nat", chain="luci_splash_leases", options={"MAC", mac:upper()}})
+ if has_ipv6 then
+ ipt6_delete_all({table="filter", chain="luci_splash_filter", options={"MAC", mac:upper()}})
+ end
+end
+
+
+-- Add whitelist rules
+function add_whitelist_rule(mac)
+ os.execute("iptables -t filter -I luci_splash_filter -m mac --mac-source %q -j RETURN" % mac)
+ os.execute("iptables -t nat -I luci_splash_leases -m mac --mac-source %q -j RETURN" % mac)
+ if has_ipv6 then
+ os.execute("ip6tables -t filter -I luci_splash_filter -m mac --mac-source %q -j RETURN" % mac)
+ end
end
--- Returns a list of MAC-Addresses for which a rule is existing
-function listrules()
- local cmd = "iptables -t nat -L luci_splash_leases | grep RETURN |"
- cmd = cmd .. "egrep -io [0-9a-f]+:[0-9a-f]+:[0-9a-f]+:[0-9a-f]+:[0-9a-f]+:[0-9a-f]+"
- return luci.util.split(luci.util.exec(cmd))
+-- Add blacklist rules
+function add_blacklist_rule(mac)
+ os.execute("iptables -t filter -I luci_splash_filter -m mac --mac-source %q -j DROP" % mac)
+ if has_ipv6 then
+ os.execute("ip6tables -t filter -I luci_splash_filter -m mac --mac-source %q -j DROP" % mac)
+ end
end
-- Synchronise leases, remove abandoned rules
function sync()
- local written = {}
+ lock()
+
local time = os.time()
-
+
-- Current leases in state files
- local leases = uci.get_all("luci_splash")
+ local leases = uci:get_all("luci_splash")
-- Convert leasetime to seconds
- local leasetime = tonumber(uci.get("luci_splash", "general", "leasetime")) * 3600
+ local leasetime = tonumber(uci:get("luci_splash", "general", "leasetime")) * 3600
-- Clean state file
- uci.load_state("luci_splash")
- uci.revert("luci_splash")
-
+ uci:load("luci_splash")
+ uci:revert("luci_splash")
-- For all leases
for k, v in pairs(leases) do
if v[".type"] == "lease" then
if os.difftime(time, tonumber(v.start)) > leasetime then
-- Remove expired
- remove_rule(v.mac)
+ remove_lease_rule(v.mac, v.ipaddr)
else
-- Rewrite state
- uci.section("luci_splash", "lease", nil, {
- mac = v.mac,
- start = v.start
+ uci:section("luci_splash", "lease", convert_mac_to_secname(v.mac), {
+ mac = v.mac,
+ ipaddr = v.ipaddr,
+ start = v.start
})
- written[v.mac:lower()] = 1
end
end
end
-
-
- -- Delete rules without state
- for i, r in ipairs(listrules()) do
- if #r > 0 and not written[r:lower()] then
- remove_rule(r)
+
+ uci:save("luci_splash")
+
+ -- Get current IPs and MAC addresses
+ local macs = get_known_macs()
+ local ips = get_known_ips(macs)
+
+ ipt:resync()
+
+ ipt_delete_all({table="filter", chain="luci_splash_filter", options={"MAC"}},
+ function(r) return not macs[r.options[2]:lower()] end)
+ ipt_delete_all({table="nat", chain="luci_splash_leases", options={"MAC"}},
+ function(r) return not macs[r.options[2]:lower()] end)
+ ipt_delete_all({table="mangle", chain="luci_splash_mark_out", options={"MAC", "MARK", "set"}},
+ function(r) return not macs[r.options[2]:lower()] end)
+ ipt_delete_all({table="mangle", chain="luci_splash_mark_in", options={"MARK", "set"}},
+ function(r) return not ips[r.destination] end)
+
+ if has_ipv6 then
+ ipt6_delete_all({table="filter", chain="luci_splash_filter", options={"MAC"}},
+ function(r) return not macs[r.options[2]:lower()] end)
+ ipt_delete_all({table="mangle", chain="luci_splash_mark_out", options={"MAC", "MARK", "set"}},
+ function(r) return not macs[r.options[2]:lower()] end)
+ ipt_delete_all({table="mangle", chain="luci_splash_mark_in", options={"MARK", "set"}},
+ function(r) return not ips[r.destination] end)
+ end
+
+ unlock()
+end
+
+-- Show client info
+function list()
+ -- Get current arp cache
+ local arpcache = { }
+ for _, entry in ipairs(net.arptable()) do
+ arpcache[entry["HW address"]:lower()] = { entry["Device"]:lower(), entry["IP address"]:lower() }
+ end
+
+ -- Find traffic usage
+ local function traffic(lease)
+ local traffic_in = 0
+ local traffic_out = 0
+
+ local rin = ipt:find({table="mangle", chain="luci_splash_mark_in", destination=lease.ipaddr})
+ local rout = ipt:find({table="mangle", chain="luci_splash_mark_out", options={"MAC", lease.mac:upper()}})
+
+ if rin and #rin > 0 then traffic_in = math.floor( rin[1].bytes / 1024) end
+ if rout and #rout > 0 then traffic_out = math.floor(rout[1].bytes / 1024) end
+
+ return traffic_in, traffic_out
+ end
+
+ -- Print listings
+ local leases = uci:get_all("luci_splash")
+
+ print(string.format(
+ "%-17s %-15s %-9s %-4s %-7s %20s",
+ "MAC", "IP", "State", "Dur.", "Intf.", "Traffic down/up"
+ ))
+
+ -- Leases
+ for _, s in pairs(leases) do
+ if s[".type"] == "lease" and s.mac then
+ local ti, to = traffic(s)
+ local mac = s.mac:lower()
+ local arp = arpcache[mac]
+ print(string.format(
+ "%-17s %-15s %-9s %3dm %-7s %7dKB %7dKB",
+ mac, s.ipaddr, "leased",
+ math.floor(( os.time() - tonumber(s.start) ) / 60),
+ arp and arp[1] or "?", ti, to
+ ))
+ end
+ end
+
+ -- Whitelist, Blacklist
+ for _, s in luci.util.spairs(leases,
+ function(a,b) return leases[a][".type"] > leases[b][".type"] end
+ ) do
+ if (s[".type"] == "whitelist" or s[".type"] == "blacklist") and s.mac then
+ local mac = s.mac:lower()
+ local arp = arpcache[mac]
+ print(string.format(
+ "%-17s %-15s %-9s %4s %-7s %9s %9s",
+ mac, arp and arp[2] or "?", s[".type"],
+ "- ", arp and arp[1] or "?", "-", "-"
+ ))
end
end
-
- uci.save_state("luci_splash")
end
-main(arg)
\ No newline at end of file
+main(arg)
projects / project / luci.git / blobdiff