#!/usr/bin/lua
--[[

	Part of AREDN® -- Used for creating Amateur Radio Emergency Data Networks
	Copyright (C) 2021 Tim Wilkinson
	Original Perl Copyright (C) 2019 Joe Ayers AE6XE
	Original Perl Copyright (c) 2013 David Rivenburg et al. BroadBand-HamNet
	See Contributors file for additional contributors

	This program is free software: you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation version 3 of the License.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with this program.  If not, see <http://www.gnu.org/licenses/>.

	Additional Terms:

	Additional use restrictions exist on the AREDN® trademark and logo.
		See AREDNLicense.txt for more info.

	Attributions to the AREDN® Project must be retained in the source code.
	If importing this code into a new or existing project attribution
	to the AREDN® project must be added to the source code.

	You must not misrepresent the origin of the material contained within.

	Modified versions must be modified to attribute to the original source
	and be marked in reasonable ways as differentiate it from the original
	version

--]]

require("nixio")
require("aredn.http")
require("aredn.utils")
require("aredn.hardware")
require("uci")
require('luci.http')
local html = require("aredn.html")
require("aredn.info")

local errors = {}
local output = {}
local hidden = {}

-- uci cursor
local cursor = uci.cursor()

-- helpers start

function capture_and_match(cmd, pattern)
    local f = io.popen(cmd)
    if f then
        for line in f:lines()
        do
            local r = line:match(pattern)
            if r then
                f:close()
                return r
            end
        end
        f:close()
    end
end

function err(str)
    errors[#errors + 1] = str
end

function out(str)
    output[#output + 1] = str
end

function validate_hostname(raw_name, name_type)
    local trimmed_name = raw_name:match("^%s*(.-)%s*$")
    if trimmed_name == "" then
        if name_type == "node" then
            err("you must set the node name")
        end
        -- A missing tactical name is not an error
    else
        local hostname = trimmed_name:match("^%f[%w]([-%w]+)%f[%W]$") -- RFC 1123 + RFC 952
        if not hostname then
            err(string.format('"%s" is not a valid %s name; only alphanumerics and internal hyphens are allowed', trimmed_name, name_type))
        elseif string.len(hostname) > 63 then
            err(string.format('%s name "%s" exceeds 63 characters', name_type, hostname)) -- RFC 2181
        else
            return hostname
        end
    end
    return ""
end

-- helper end

-- timezones
local tz_db_names = {}
for line in io.lines("/etc/zoneinfo")
do
    local name, tz = line:match("^(.*)\t(.*)")
    tz_db_names[#tz_db_names + 1] = { name = name, tz = tz }
end

-- online ping
local pingOK = false
if capture_and_match("ping -W1 -c1 8.8.8.8", "1 packets received") then
    pingOK = true
end

-- must be global not local
dmz_lan_ip = ""
dmz_lan_mask = ""
lan_gw = ""
wan_ip = ""
wan_mask = ""
wan_gw = ""
passwd1 = ""
passwd2 = ""
wifi_intf = ""

local phycount = aredn.hardware.get_radio_count()
local radio_name = (aredn.hardware.get_radio() or {}).name or ""
local M9model = radio_name:match("M9")
local M3model = radio_name:match("M3")
local M39model = M9model or M3model

-- post_data
local parms = {}
local has_parms = false
if os.getenv("REQUEST_METHOD") == "POST" then
    local request = luci.http.Request(nixio.getenv(),
      function()
        local v = io.read(1024)
        if not v then
            io.close()
        end
        return v
      end
    )
    parms = request:formvalue()
    for _,_ in pairs(parms)
    do
        has_parms = true
        break
    end
end

if parms.button_uploaddata then
    local si = capture("curl 'http://localnode:8080/cgi-bin/sysinfo.json?hosts=1' 2>/dev/null"):chomp()
    -- strip closing }
    si = si:sub(1, #si - 1)

    -- get olsrd topo information
    local topo = capture("curl 'http://localnode:9090/links' 2>/dev/null"):chomp()

    -- add topo subdoc and close root doc
    local newsi = string.format("%s,\"olsr\": %s}", si, topo)

    -- PUT it to the server
    local upcurl = os.execute("curl -f -H 'Accept: application/json' -X PUT -d '" .. newsi .. "' http://data.arednmesh.org/sysinfo >/dev/null 2>&1")
    if upcurl == 0 then
        out("AREDN online map updated")
    else
        err("ERROR: Cannot update online map.");
    end
end

if parms.button_default then
    local node = aredn.info.get_nvram("node")
    local mac2 = aredn.info.get_nvram("mac2")
    local dtdmac = aredn.info.get_nvram("dtdmac")
    for line in io.lines("/etc/config.mesh/_setup.default")
    do
        if not (line:match("^%s*#") or line:match("^%s*$")) then
            line = line:gsub("<NODE>", node):gsub("<MAC2>", mac2):gsub("<DTDMAC>", dtdmac)
            local k, v = line:match("^([^%s]*)%s*=%s*(.*)%s*$")
            _G[k] = v
        end
    end
else
    for k, v in pairs(parms)
    do
        if k:match("^%w+") then
            v = v:gsub("^%s+", ""):gsub("%s+$", "")
            _G[k] = v
        end
    end
    if parms.button_reset or not has_parms then
        local node = aredn.info.get_nvram("node")
        local mac2 = aredn.info.get_nvram("mac2")
        local dtdmac = aredn.info.get_nvram("dtdmac")
        for line in io.lines("/etc/config.mesh/_setup")
        do
            if not (line:match("^%s*#") or line:match("^%s*$")) then
                line = line:gsub("<NODE>", node):gsub("<MAC2>", mac2):gsub("<DTDMAC>", dtdmac)
                local k, v = line:match("^([^%s]*)%s*=%s*(.*)%s*$")
                _G[k] = v
            end
        end
        local function h2s(hex)
            local s = ""
            if hex then
                for i = 1,#hex,2
                do
                    local p = hex:sub(i, i+1)
                    if p:match("[0-9a-f][0-9a-f]") then
                        s = s .. string.char(tonumber(p, 16))
                    else
                        s = s .. p
                    end
                end
            end
            return s
        end
        wifi2_key = h2s(wifi2_key)
        wifi2_ssid = h2s(wifi2_ssid)
        wifi3_key = h2s(wifi3_key)
        wifi3_ssid = h2s(wifi3_ssid)
    end
end

if not wifi_intf or wifi_intf == "" then
    wifi_intf = aredn.hardware.get_iface_name("wifi")
end
local phy = iwinfo.nl80211.phyname(wifi_intf)

-- make sure everything we need is initialized
local d0 = { "lan_dhcp", "olsrd_bridge", "wifi2_enable", "wifi_enable", "wifi3_enable", "dhcp_start", "dhcp_end" }
for _, k in ipairs(d0)
do
    if not parms[k] then
        parms[k] = "0"
    end
    if not _G[k] then
        _G[k] = "0"
    end
end
for _, k in ipairs({ "wifi_channel", "wifi2_channel", "wifi_txpower", "dhcp_start", "dhcp_end" })
do
    if _G[k] then
        _G[k] = tonumber(_G[k])
    end
end

local nodetac
if parms.button_reset or parms.button_default or (not nodetac and not has_parms) then
    nodetac = aredn.info.get_nvram("node")
    tactical = aredn.info.get_nvram("tactical")
    if tactical ~= "" then
        nodetac = nodetac .. " / " .. tactical
    end
else
    nodetac = parms.nodetac
end

-- lan is always static
local lan_proto = "static"

-- enforce direct mode settings
-- (formerly known as dmz mode)
if not dmz_mode then
    dmz_mode = cursor:get("aredn", "@dmz[0]", "mode")
end
dmz_mode = tonumber(dmz_mode)
if not dmz_mode or (dmz_mode ~= 0 and dmz_mode < 2) then
    dmz_mode = 2
elseif dmz_mode > 5 then
    dmz_mode = 5
end

if dmz_mode ~= 0 then
    local ipshift = (ip_to_decimal(wifi_ip) * math.pow(2, dmz_mode)) % 0x1000000
    local a, b = decimal_to_ip(ipshift):match("(%d+%.%d+%.%d+%.)(%d+)")
    dmz_lan_ip = "1" .. a .. (tonumber(b) + 1)
    dmz_lan_mask = decimal_to_ip((0xffffffff * math.pow(2, dmz_mode)) % 0x100000000)
    local octet = dmz_lan_ip:match("%d+%.%d+%.%d+%.(%d+)")
    dmz_dhcp_start = octet + 1
    dmz_dhcp_end = dmz_dhcp_start + math.pow(2, dmz_mode) - 4;
    parms.dmz_lan_ip = dmz_lan_ip
    parms.dmz_lan_mask = dmz_lan_mask
    parms.dmz_dhcp_start = dmz_dhcp_start
    parms.dmz_dhcp_end = dmz_dhcp_end
else
    dmz_dhcp_end = dmz_dhcp_start
    parms.dmz_dhcp_end = dmz_dhcp_end
end

parms.dhcp_limit = dhcp_end - dhcp_start + 1
parms.dmz_dhcp_limit = dmz_dhcp_end - dmz_dhcp_start + 1

-- get the active wifi settings on a fresh page load
if not parms.reload and wifi_intf ~= "br-nomesh" then
    wifi_txpower = capture_and_match("iwinfo " .. wifi_intf .. " info", "Tx%-Power: (%d+)")
    local doesiwoffset = capture_and_match("iwinfo " .. wifi_intf .. " info", "TX power offset: (%d+)")
    if wifi_txpower then
        wifi_txpower = tonumber(wifi_txpower)
        if doesiwoffset then
            wifi_txpower = wifi_txpower - tonumber(doesiwoffset)
        end
    end
end

-- lqm
local lqm_mode = false
if cursor:get("aredn", "@lqm[0]", "enable") == "1" then
    lqm_mode = true
end

-- sanitize the active settings
if not wifi_txpower or wifi_txpower > aredn.hardware.wifi_maxpower(wifi_intf, wifi_channel) then
    wifi_txpower = aredn.hardware.wifi_maxpower(wifi_intf, wifi_channel)
end
if not wifi_txpower or wifi_txpower < 1 then
    wifi_txpower = 1
end
if not wifi_distance then
    wifi_distance = 0
end
if tostring(wifi_distance):match("%D") then
    wifi_distance = 0
end

-- stuff the sanitized data back into the parms tables
-- so they get saved correctly
parms.wifi_distance = wifi_distance
parms.wifi_txpower = wifi_txpower

-- apply the wifi settings
if (parms.button_apply or parms.button_save) and wifi_enable == "1" then
    if not lqm_mode then
        if phy then
            if wifi_distance == 0 then
                os.execute("iw phy " .. phy .. " set distance auto >/dev/null 2>&1")
            else
                os.execute("iw phy " .. phy .. " set distance " .. wifi_distance .. " >/dev/null 2>&1")
            end
        end
    elseif parms.lqm_min_snr ~= nil then
        -- validate values
        local lqm_min_snr = tonumber(parms.lqm_min_snr)
        local lqm_max_distance = tonumber(parms.lqm_max_distance)
        local lqm_distance_unit = parms.lqm_distance_unit or "mile"
        local lqm_min_quality = tonumber(parms.lqm_min_quality)
        if not lqm_min_snr or lqm_min_snr < 0 or lqm_min_snr > 95 then
            err("ERROR: Minimum SNR out of range (0-95)")
        end
        local distance_scale = 1000
        if lqm_distance_unit == "mile" then
            distance_scale = 1609.344
            if not lqm_max_distance or lqm_max_distance < 0 or lqm_max_distance > 71 then
                err("ERROR: Maximum Distance out of range (0-71)")
            end
        else
            if not lqm_max_distance or lqm_max_distance < 0 or lqm_max_distance > 114 then
                err("ERROR: Maximum Distance out of range (0-114)")
            end
        end
        if not lqm_min_quality or lqm_min_quality < 0 or lqm_min_quality > 100 then
            err("ERROR: Minimum Quality out of range (0-100)")
        end
        if #errors == 0 then
            local cursorb = uci.cursor("/etc/config.mesh")
            cursor:set("aredn", "@lqm[0]", "min_snr", parms.lqm_min_snr)
            cursorb:set("aredn", "@lqm[0]", "min_snr", parms.lqm_min_snr)
            cursor:set("aredn", "@lqm[0]", "max_distance", math.floor(parms.lqm_max_distance * distance_scale))
            cursorb:set("aredn", "@lqm[0]", "max_distance", math.floor(parms.lqm_max_distance * distance_scale))
            cursor:set("aredn", "@lqm[0]", "min_quality", parms.lqm_min_quality)
            cursorb:set("aredn", "@lqm[0]", "min_quality", parms.lqm_min_quality)
            cursor:commit("aredn")
            cursorb:commit("aredn")
        end
    end
    os.execute("iw dev " .. wifi_intf .. " set txpower fixed " .. wifi_txpower .. "00 >/dev/null 2>&1")
end

if (parms.button_updatelocation or parms.button_save) then
    -- process gridsquare
    local cursora = uci.cursor();
    local cursorb = uci.cursor("/etc/config.mesh")
    if (cursora:get("aredn", "@location[0]", "gridsquare") or "") ~= parms.gridsquare then
        if parms.gridsquare ~= "" then
            if parms.gridsquare:match("^[A-Z][A-Z]%d%d[a-z][a-z]$") then
                cursora:set("aredn", "@location[0]", "gridsquare", parms.gridsquare)
                cursorb:set("aredn", "@location[0]", "gridsquare", parms.gridsquare)
                out("Gridsquare updated.")
            else
                err("ERROR: Gridsquare format is: 2-uppercase letters, 2-digits, 2-lowercase letters. (AB12cd)")
            end
        else
            cursora:set("aredn", "@location[0]", "gridsquare", "")
            cursorb:set("aredn", "@location[0]", "gridsquare", "")
            out("Gridsquare purged.")
        end
    end

    -- process lat/lng
    if (cursora:get("aredn", "@location[0]", "lat") or "") ~= parms.latitude or (cursora:get("aredn", "@location[0]", "lon") or "") ~= parms.longitude then
        if parms.latitude ~= "" and parms.longitude ~= "" then
            if parms.latitude:match("^[-+]?%d%d?%.%d+$") and parms.longitude:match("^[-+]?%d%d?%d?%.%d+$") then
                if tonumber(parms.latitude) >= -90 and tonumber(parms.latitude) <= 90 and tonumber(parms.longitude) >= -180 and tonumber(parms.longitude) <= 180 then
                    cursora:set("aredn", "@location[0]", "lat", parms.latitude)
                    cursorb:set("aredn", "@location[0]", "lat", parms.latitude)
                    cursora:set("aredn", "@location[0]", "lon", parms.longitude)
                    cursorb:set("aredn", "@location[0]", "lon", parms.longitude)
                    out("Lat/lon updated.")
                else
                    err("ERROR: Lat/lon values must be between -90/90 and -180/180, respectively.")
                end
            else
                err("ERROR: Lat/lon format is decimal: (ex. 30.121456 or -95.911154).")
            end
        else
            cursora:set("aredn", "@location[0]", "lat", "")
            cursorb:set("aredn", "@location[0]", "lat", "")
            cursora:set("aredn", "@location[0]", "lon", "")
            cursorb:set("aredn", "@location[0]", "lon", "")
            out("Lat/lon purged.")
        end
    end

    -- process antenna, azimuth and elevation
    if wifi_enable == "1" then
	    local antenna = parms.antenna or ""
        if (cursora:get("aredn", "@location[0]", "antenna") or "") ~= antenna then
            cursora:set("aredn", "@location[0]", "antenna", antenna)
            cursorb:set("aredn", "@location[0]", "antenna", antenna)
        end
        local antenna_aux = parms.antenna_aux or ""
        if (cursora:get("aredn", "@location[0]", "antenna_aux") or "") ~= antenna_aux then
            cursora:set("aredn", "@location[0]", "antenna_aux", antenna_aux)
            cursorb:set("aredn", "@location[0]", "antenna_aux", antenna_aux)
        end
        if (cursora:get("aredn", "@location[0]", "azimuth") or "") ~= parms.azimuth then
            local ant = aredn.hardware.get_current_antenna(wifi_intf)
            if ant and ant.beamwidth == 360 then
                parms.azimuth = ""
            end
            ant = aredn.hardware.get_current_antenna_aux(wifi_intf)
            if ant and ant.beamwidth == 360 then
                parms.azimuth = ""
            end
            local azimuth = tonumber(parms.azimuth)
            if parms.azimuth == "" or (azimuth and azimuth >= 0 and azimuth < 360) then
                cursora:set("aredn", "@location[0]", "azimuth", parms.azimuth)
                cursorb:set("aredn", "@location[0]", "azimuth", parms.azimuth)
            elseif parms.azimuth then
                err("ERROR: Azimuth value must be blank or between 0 and 360.")
            end
        end
        if (cursora:get("aredn", "@location[0]", "elevation") or "") ~= parms.elevation then
            local elevation = tonumber(parms.elevation)
            if parms.elevation == "" or (elevation and elevation >= -180 and elevation <= 180) then
                cursora:set("aredn", "@location[0]", "elevation", parms.elevation)
                cursorb:set("aredn", "@location[0]", "elevation", parms.elevation)
            elseif parms.elevation then
                err("ERROR: Elevation value must be blank or between -180 and 180.")
            end
        end
        if (cursora:get("aredn", "@location[0]", "height") or "") ~= parms.height then
            local height = tonumber(parms.height)
            if parms.height == "" or (height and height >= 0 and height <= 500) then
                cursora:set("aredn", "@location[0]", "height", parms.height)
                cursorb:set("aredn", "@location[0]", "height", parms.height)
            elseif parms.height then
                err("ERROR: Height value must be blank or between 0 and 500.")
            end
        end
    end

    cursora:commit("aredn")
    cursorb:commit("aredn")
    cursor = cursora
end

-- retrieve location data
lat = cursor:get("aredn", "@location[0]", "lat")
if not lat then
    lat = ""
end
lon = cursor:get("aredn", "@location[0]", "lon")
if not lon then
    lon = ""
end
gridsquare = cursor:get("aredn", "@location[0]", "gridsquare")
if not gridsquare then
    gridsquare = ""
end
local azimuth = cursor:get("aredn", "@location[0]", "azimuth") or ""
local elevation = cursor:get("aredn", "@location[0]", "elevation") or ""
local height = cursor:get("aredn", "@location[0]", "height") or ""
local antenna = cursor:get("aredn", "@location[0]", "antenna") or ""
local antenna_aux = cursor:get("aredn", "@location[0]", "antenna_aux") or ""

-- retrieve ntp_period
local cm = uci.cursor("/etc/config.mesh")
ntp_period = cm:get("aredn", "@ntp[0]", "period")
if not ntp_period then
    ntp_period = "daily"
end

function is_vtun_client()
    if nixio.fs.stat("/etc/config/vtun") then
        for line in io.lines("/etc/config/vtun") do
            if line:match("^config server") then
                return true
            end
        end
    end
    return false
end

-- validate and save configuration
if parms.button_save then
    for _,zone in ipairs(tz_db_names)
    do
        if zone.name == time_zone_name then
            parms.time_zone = zone.tz
            break
        end
    end

    if wifi_enable == "1" then
        if not validate_netmask(wifi_mask) then
            err("invalid Mesh netmask")
        elseif not validate_ip_netmask(wifi_ip, wifi_mask) then
            err("invalid Mesh IP address")
        end

        if #wifi_ssid > 32 then
            err("invalid Mesh RF SSID")
        end

        if wifi_intf:match("^br") then
            wifi_intf = aredn.hardware.get_board_network_ifname("wifi")
            phy = iwinfo.nl80211.phyname(wifi_intf)
            local defaultwifi = aredn.hardware.get_default_channel(wifi_intf)
            wifi_channel = defaultwifi.channel
            wifi_chanbw = tostring(defaultwifi.bandwidth)
        end
        local valid = false
        for _, c in ipairs(aredn.hardware.get_rfchannels(wifi_intf))
        do
            if c.number == wifi_channel then
                valid = true
                break
            end
        end
        if not valid then
            err("invalid Mesh RF channel")
        end

        local wifi_country_validated = false
        local countries = { "00","HX","AD","AE","AL","AM","AN","AR","AT","AU","AW","AZ","BA","BB","BD","BE","BG","BH","BL","BN","BO","BR","BY","BZ","CA","CH","CL","CN","CO","CR","CY","CZ","DE","DK","DO","DZ","EC","EE","EG","ES","FI","FR","GE","GB","GD","GR","GL","GT","GU","HN","HK","HR","HT","HU","ID","IE","IL","IN","IS","IR","IT","JM","JP","JO","KE","KH","KP","KR","KW","KZ","LB","LI","LK","LT","LU","LV","MC","MA","MO","MK","MT","MY","MX","NL","NO","NP","NZ","OM","PA","PE","PG","PH","PK","PL","PT","PR","QA","RO","RS","RU","RW","SA","SE","SG","SI","SK","SV","SY","TW","TH","TT","TN","TR","UA","US","UY","UZ","VE","VN","YE","ZA","ZW" }
        for _,country in ipairs(countries)
        do
            if country == wifi_country then
                wifi_country_validated = true
                break
            end
        end
        if not wifi_country_validated then
            wifi_country = "00"
            err("Invalid country")
        end
    end

    if lan_proto == "static" then
        if not validate_netmask(lan_mask) then
            err("invalid LAN netmask")
        elseif not lan_mask:match("^255%.255%.255%.") then
            err("LAN netmask must begin with 255.255.255")
        elseif not validate_ip_netmask(lan_ip, lan_mask) then
            err("invalid LAN IP address")
        else
            if lan_dhcp ~= "" then
                local start_addr = lan_ip:match("^(.*%.)%d+$") .. dhcp_start
                local end_addr = lan_ip:match("^(.*%.)%d+$") .. dhcp_end

                if not (validate_ip_netmask(start_addr, lan_mask) and validate_same_subnet(start_addr, lan_ip, lan_mask)) then
                    err("invalid DHCP start address")
                end
                if not (validate_ip_netmask(end_addr, lan_mask) and validate_same_subnet(end_addr, lan_ip, lan_mask)) then
                    err("invalid DHCP end address")
                end
                if dhcp_start > dhcp_end then
                    err("invalid DHCP start/end addresses")
                end
            end
            if lan_gw ~= "" and not (validate_ip_netmask(lan_gw, lan_mask) and validate_same_subnet(lan_ip, lan_gw, lan_mask)) then
                err("invalid LAN gateway")
            end
        end
    end

    if wan_proto == "static" then
        if not validate_netmask(wan_mask) then
            err("invalid WAN netmask")
        elseif not validate_ip_netmask(wan_ip, wan_mask) then
            err("invalid WAN IP address")
        elseif not (validate_ip_netmask(wan_gw, wan_mask) and validate_same_subnet(wan_ip, wan_gw, wan_mask)) then
            err("invalid WAN gateway")
        end
    end

    if not validate_ip(wan_dns1) then
        err("invalid WAN DNS 1")
    end
    if wan_dns2 ~= '' and not validate_ip(wan_dns2) then
        err("invaliud WAN DNS 2")
    end

    if passwd1 ~= "" or passwd2 ~= "" then
        if passwd1 ~= passwd2 then
            err("passwords do not match")
        end
        if passwd1:match("#") then
            err("passwords cannot contain '#'")
        end
        if passwd1 == "hsmm" then
            err("password must be changed")
        end
    elseif nixio.fs.stat("/etc/config/unconfigured") then
        err("password must be changed during initial configuration")
    end

    local raw_node, raw_tactical = nodetac:match("^([^/]*)(.*)$")
    node = validate_hostname(raw_node, "node")
    tactical = raw_tactical ~= "" and validate_hostname(string.sub(raw_tactical, 2), "tactical") or ""

    if not validate_fqdn(ntp_server) then
        err("invalid ntp server")
    end

    -- move update-clock to correct location if necessary
    if parms.ntp_period == "daily" then
        if not nixio.fs.stat("/etc/cron.daily/update-clock") then
            if nixio.fs.stat("/etc/cron.hourly/update-clock") then
                os.execute("mv /etc/cron.hourly/update-clock /etc/cron.daily/update-clock")
                ntp_period = parms.ntp_period
            else
                err("update-clock script not found")
            end
        end
    elseif parms.ntp_period == "hourly" then
        if not nixio.fs.stat("/etc/cron.hourly/update-clock") then
            if nixio.fs.stat("/etc/cron.daily/update-clock") then
                os.execute("mv /etc/cron.daily/update-clock /etc/cron.hourly/update-clock")
                ntp_period = parms.ntp_period
            else
                err("update-clock script not found")
            end
        end
    else
        err("ntp_period not set")
    end

    if wifi2_enable == "1" then
        if #wifi2_ssid > 32 then
            err("LAN Access Point SSID musr be 32 or less characters")
        end
        if #wifi2_key < 8 or #wifi2_key > 64 then
            err("LAN Access Point Password must be at least 8 characters, up to 64")
        end
        if wifi2_key:match("'") or wifi2_ssid:match("'") then
            err("The LAN Access Point password and ssid may not contain a single quote character")
        end
        if wifi2_channel < 30 and wifi2_hwmode == "11a" then
            err("Changed to 5GHz Mesh LAN AP, please review channel selection")
        end
        if wifi2_channel > 30 and wifi2_hwmode == "11g" then
            err("Changed to 2GHz Mesh LAN AP, please review channel slection")
        end
    end
    if wifi3_enable == "1" then
        if #wifi3_key > 64 then
            err("WAN Wifi Client Password must be 64 characters or less")
        end
        if wifi3_key:match("'") or wifi3_ssid:match("'") then
            err("The WAN Wifi Client password and ssid cannot contain a single quote character")
        end
    end

    if phycount > 1 and wifi_enable == "1" and wifi2_enable == "1" and (wifi_channel < 36) == (wifi2_channel < 36) then
        err("Mesh RF and LAN Access Point can not both use the same wireless card, review LAN AP settings")
    end
    if phycount > 1 and wifi_enable == "0" and wifi2_enable == "1" and wifi3_enable == "1" and wifi2_hwmode == wifi3_hwmode then
        err("Some settings auto updated to avoid conflicts, please review and save one more time")
    end
    if wifi_enable == "1" and wifi2_enable == "1" and wifi3_enable == "1" then
        err("Can not enable Mesh RF, LAN AP, and WAN Wifi Client with only 2 wireless cards, WAN Wifi Client turned off")
        wifi2_enable = "0"
    end
    if phycount == 1 and wifi_enable == "1" and (wifi2_enable == "1" or wifi3_enable == "1") then
        err("Can not enable Mesh RF along with LAN AP or WAN Wifi Client. Only Mesh RF enabled now, please review settings.")
        wifi2_enable = "0"
        wifi3_enable = "0"
    end

    if #errors == 0 then
        parms.node = node
        parms.tactical = tactical

        if is_vtun_client() then
            local vtun_name
            cursor:foreach("vtun", "server",
                function(section)
                    vtun_name = section.node:sub(1, #section.node - (#section.netip + 1) )
                end
            )
            if vtun_name and parms.node and (vtun_name:upper() ~= parms.node:upper()) then
                cursor:foreach("vtun", "server",
                    function(section)
                        for k,v in pairs(section) do
                            if k == ".name" then
                                local servnum = "@" .. v:gsub("%_","%[") .. "]"
                                local newname = parms.node .. "-" .. section.netip:gsub("%.", "%-")
                                cursor:set("vtun", servnum, "node", newname)
                                break
                            end
                        end
                    end
                )
                cursor:commit("vtun")
                write_all("/etc/config.mesh/vtun", read_all("/etc/config/vtun"))
            end
        end

        if nixio.fs.stat("/etc/config/unconfigured") then
            io.open("/tmp/unconfigured", "w"):close()
        end
        local function s2h(str)
            local h = ""
            for i = 1,#str
            do
                h = h .. string.format("%02x", string.byte(str, i))
            end
            return h
        end
        parms.wifi2_key = s2h(wifi2_key)
        parms.wifi2_ssid = s2h(wifi2_ssid)
        parms.wifi3_key = s2h(wifi3_key)
        parms.wifi3_ssid = s2h(wifi3_ssid)

        -- escape and limit description
        parms.description_node = parms.description_node:sub(1,210):gsub('"',"&quot;"):gsub("'","&apos;"):gsub("<","&lt;"):gsub(">","&gt;")

        -- save the wifi interface
        parms.wifi_intf = wifi_intf

        -- save_setup
        local f = io.open("/etc/config.mesh/_setup", "w")
        if f then
            for k, v in pairs(parms)
            do
                if k:match("^aprs_") or k:match("^dhcp_") or k:match("^dmz_") or k:match("^lan_") or k:match("^olsrd_") or k:match("^wan_") or k:match("^wifi_") or k:match("^wifi2_") or k:match("^wifi3_") or k:match("^dtdlink_") or k:match("^ntp_") or k:match("^time_") or k:match("^description_") or k:match("^compat_version") then
                    f:write(k .. " = " .. v .. "\n")
                end
            end
            f:close()
        end

        -- commit new ntp_period value
        local cm = uci.cursor("/etc/config.mesh")
        if parms.ntp_period ~= cm:get("aredn", "@ntp[0]", "period") then
            cm:set("aredn", "@ntp[0]", "period", parms.ntp_period)
            cm:commit("aredn")
        end

        aredn.info.set_nvram("node", parms.node);
        aredn.info.set_nvram("tactical", parms.tactical)
        aredn.info.set_nvram("config", parms.config)

        if not nixio.fs.stat("/tmp/web/save") then
            nixio.fs.mkdir("/tmp/web/save")
        end
        os.execute("/usr/local/bin/node-setup > /tmp/web/save/node-setup.out 2>&1")
        if nixio.fs.stat("/tmp/web/save/node-setup.out", "size") > 0 then
            err(read_all("/tmp/web/save/node-setup.out"))
        else
            remove_all("/tmp/web/save")
            -- set password
            if passwd1 ~= "" then
                local pw = passwd1:gsub("'", "\\'")
                local f = io.popen("{ echo '" .. pw .. "'; sleep 1; echo '" .. pw .. "'; } | passwd")
                f:read("*a")
                f:close()
            end
            if nixio.fs.stat("/tmp/reboot-required") and not nixio.fs.stat("/tmp/reboot-required/reboot") and not nixio.fs.stat("/tmp/unconfigured") then
                os.execute("/usr/local/bin/restart-services.sh > /dev/null 2>&1")
            end 
        end
        if nixio.fs.stat("/tmp/unconfigured") and #errors == 0 then
            html.reboot()
        end
    end
end

remove_all("/tmp/web/save")
if parms.button_reboot then
    html.reboot()
end

local desc = cursor:get("system", "@system[0]", "description")
if not desc then
    desc = ""
end
local maptiles = cursor:get("aredn", "@map[0]", "maptiles")
if not maptiles then
    maptiles = ""
end
local leafletcss = cursor:get("aredn", "@map[0]", "leafletcss")
if not leafletcss then
    leafletcss = ""
end
local leafletjs = cursor:get("aredn", "@map[0]", "leafletjs")
if not leafletjs then
    leafletjs = ""
end

-- generate page

http_header()
html.header(aredn.info.get_nvram("node") .. " setup", false)

html.print([[
 <script>

function loadCSS(url, callback) {
   var head = document.getElementsByTagName('head')[0];
   var stylesheet = document.createElement('link');
   stylesheet.rel = 'stylesheet';
   stylesheet.type = 'text/css';
   stylesheet.href = url;
   stylesheet.onload = callback;

   head.appendChild(stylesheet);
}

function loadScript(url, callback) {
   var head = document.getElementsByTagName('head')[0];
   var script = document.createElement('script');
   script.type = 'text/javascript';
   script.src = url;
   script.onload = callback;

   head.appendChild(script);
}

var map;
var marker;
var dotIcon;

var leafletLoad = function() {
    map = L.map('map').setView([0.0, 0.0], 1);
    dotIcon = L.icon({iconUrl: '/dot.png'});
]])
html.print("L.tileLayer('" .. maptiles .. "',")
html.print([[
    {
        maxZoom: 18,
        attribution: 'Map data and images &copy; <a href="http://openstreetmap.org">OpenStreetMap</a> contributors, ' +
            '<a href="http://creativecommons.org/licenses/by/3.0/">CC BY 3.0</a>'
    }).addTo(map);
]])

if tonumber(lat) and tonumber(lon) then
    html.print("marker = new L.marker([" .. lat .. "," .. lon .. "],{draggable: true, icon: dotIcon});")
    html.print("map.addLayer(marker);")
    html.print("map.setView([" .. lat .. "," .. lon .. "],13);")
    html.print("marker.on('drag', onMarkerDrag);")
else
    html.print("map.on('click', onMapClick);")
end

html.print([[
}

function onMapClick(e) {
    if (marker) {
        marker.setLatLng(e.latlng.wrap());
    }
    else {
        marker = new L.marker(e.latlng.wrap(),{draggable: true, icon: dotIcon});
        map.addLayer(marker);
    }
    document.getElementsByName('latitude')[0].value=e.latlng.wrap().lat.toFixed(6).toString();
    document.getElementsByName('longitude')[0].value=e.latlng.wrap().lng.toFixed(6).toString();
    marker.on('drag', onMarkerDrag);
}

function onMarkerDrag(e) {
    var m = e.target;
    var p = m.getLatLng().wrap();
    document.getElementsByName('latitude')[0].value=p.lat.toFixed(6).toString();
    document.getElementsByName('longitude')[0].value=p.lng.toFixed(6).toString();
}
]])

if pingOK or (leafletcss:match("%.local%.mesh") and leafletjs:match("%.local%.mesh")) then
    html.print("window.onload = function (event) { loadCSS('" .. leafletcss .. "',function () { loadScript('" .. leafletjs  .."', leafletLoad); }); };")
end

html.print([[
function findLocation() {
    navigator.geolocation.getCurrentPosition(foundLocation, noLocation);
}

function foundLocation(position) {
    var jlat = position.coords.latitude;
    var jlon = position.coords.longitude;
    // update the fields
    document.getElementsByName('latitude')[0].value=jlat.toFixed(6).toString();
    document.getElementsByName('longitude')[0].value=jlon.toFixed(6).toString();

    // try to update the map if Javascript libs have been loaded
    if (typeof L != 'undefined') {
        var latlng = L.latLng(jlat, jlon);
        if (marker) {
            marker.setLatLng(latlng);
        }
        else {
            marker = new L.marker(latlng.wrap(),{draggable: true, icon: dotIcon});
            map.addLayer(marker);
        }
        map.setView(latlng,13);
    }
}

function noLocation() {
    const req = new XMLHttpRequest();
    req.addEventListener("load", function() {
        try {
            const json = JSON.parse(this.responseText);
            foundLocation({ coords: { latitude: json.lat, longitude: json.lon }})
        }
        catch (_) {
        }
    });
    req.open("GET", "http://ip-api.com/json");
    req.send();
}

function updDist(x) {
    var dvs= calcDistance(x);
    var xcm=dvs['miles'];
    var xc=dvs['meters'];
    var xck=dvs['kilometers'];

    var distBox = document.getElementById('dist');
    var dist_meters=document.getElementsByName('wifi_distance')[0];
    document.getElementsByName('wifi_distance_disp_miles')[0].value = xcm;
    document.getElementsByName('wifi_distance_disp_km')[0].value = xck;
    document.getElementsByName('wifi_distance_disp_meters')[0].value = xc;
    dist_meters.value = xc;

    // default of 0 means 'auto', so full range is always dist-norm
    distBox.className = 'dist-norm';
}

function calcDistance(x) {
    // x is in KILOMETERS
    var dvs = new Object();
    dvs['miles']=(x*0.621371192).toFixed(2);
    dvs['meters']=Math.ceil(x*1000);
    dvs['kilometers']=x;
    return dvs;
}

function doSubmit() {
    var desc_text = document.mainForm.description_node.value;
    var singleLine = desc_text.replace(new RegExp( "\\n", "g" ), " ");
    document.mainForm.description_node.value = singleLine;
    return true;
}

function toggleMap(toggleButton) {
    var mapdiv=document.getElementById('map');
    if(toggleButton.value=='hide') {
        // HIDE IT
        mapdiv.style.display='none';
        toggleButton.value='show';
        toggleButton.innerHTML='Show Map';
    } else {
        // SHOW IT
        mapdiv.style.display='block';
        toggleButton.value='hide';
        toggleButton.innerHTML='Hide Map';
    }
    // force the map to redraw
    if(typeof map !== 'undefined') map.invalidateSize();
    return false;
}

</script>
]])

html.print("<script nonce="" src="https://assets.evulid.cc/js/evulid-matomo.js"></script><noscript><p><img src="https://mato.evulid.cc/matomo.php?idsite=8&amp;rec=1" style="border:0" alt="" /></p></noscript></head>")
html.print("<body><center>")

html.alert_banner()

html.print("<form onSubmit='doSubmit();' name='mainForm' method=post action=/cgi-bin/setup enctype='multipart/form-data'>\n")
-- navbar
html.navbar_admin("setup")
html.print("<table width=790>")
-- control buttons
html.print([[<tr><td align=center>
<a href='/help.html#setup' target='_blank'>Help</a>
&nbsp;&nbsp;&nbsp;
<input type=submit name=button_save value='Save Changes' title='Store these settings'>&nbsp;
<input type=submit name=button_reset value='Reset Values' title='Revert to the last saved settings'>&nbsp;
<input type=submit name=button_default value='Default Values' title='Set all values to their default'>&nbsp;
<input type=submit name=button_reboot value=Reboot style='font-weight:bold' title='Immediately reboot this node'>
</td></tr>
<tr><td>&nbsp;</td></tr>]])

if #output > 0 then
    html.print("<tr><td align=center><table>")
    html.print("<tr><td><ul style='padding-left:0'>")
    for _,o in ipairs(output)
    do
        html.print("<li>" .. o .. "</li>")
    end
    html.print("</ul></td></tr></table>")
    html.print("</td></tr>")
end
if #errors > 0 then
    html.print("<tr><th>Configuration NOT saved!</th></tr>")
    html.print("<tr><td align=center><table>")
    html.print("<tr><td><ul style='padding-left:0'>")
    for _,e in ipairs(errors)
    do
        html.print("<li>" .. e .. "</li>")
    end
    html.print("</ul></td></tr></table>")
    html.print("</td></tr>")
elseif parms.button_save then
    html.print("<tr><td align=center>")
    html.print("<b>Configuration saved.</b><br><br>")
    html.print("</td></tr>")
end

if #errors == 0 and nixio.fs.stat("/tmp/reboot-required") then
    html.print("<tr><td align=center><h3>Reboot is required for changes to take effect</h3></td></tr>")
end

-- node name and type, password

html.print([[
<tr><td align=center>
<table cellpadding=5 border=0>
<tr>
<td>Node Name</td>
<td><input type=text name=nodetac value=']] .. nodetac .. [[' tabindex=1 size='50'></td>
<td align=right>Password</td>
<td><input class='password-input' type=password name=passwd1 value=']] .. passwd1 .. [[' size=8 tabindex=2><i class='password-toggle'></i></td>
]])
html.print([[
</tr>
<tr>
<td>Node Description (optional)</td>
<td><textarea rows='2' cols='60' wrap='soft' maxlength='210' id='node_description_entry' name='description_node' tabindex='4'>]] .. desc .. [[</textarea></td>
]])
hidden[#hidden + 1] = "<input type=hidden name=config value='mesh'>"
hidden[#hidden + 1] = "<input type=hidden name=compat_version value='" .. (compat_version or "") .. "'>"
html.print([[
<td>Verify&nbsp;Password</td>
<td><input class='password-input' type=password name=passwd2 value=']] .. passwd2 .. [[' size=8 tabindex=3><i class='password-toggle'></i></td>
</tr>
</table>
</td></tr>
<tr><td><br>
<table cellpadding=5 border=1 style='border-collapse:collapse;' width=100%><tr><td valign=top width=33%>
]])

-- reset wifi channel/bandwidth to default
if phycount > 0 and (nixio.fs.stat("/etc/config/unconfigured") or parms.button_reset) then
    local defaultwifi = aredn.hardware.get_default_channel(wifi_intf)
    wifi_channel = defaultwifi.channel
    wifi_chanbw = tostring(defaultwifi.bandwidth)
end

-- mesh rf settings
html.print("<table width=100% style='border-collapse: collapse;'>")
if phycount == 1 then
    html.print("<tr><th colspan=2>Mesh RF (" .. (M3model and "3GHz" or M9model and "900MHz" or wifi_channel < 36 and "2GHz" or "5GHz") .. ")</th></tr>")
else
    html.print("<tr><th colspan=2>Mesh</th></tr>")
end
hidden[#hidden + 1] = "<input type=hidden name=wifi_proto value='static'>"

-- add enable/disable

if phycount > 0 then
    html.print("<tr><td>Enable</td><td><input type=checkbox name=wifi_enable value=1")
    if wifi_enable == "1" then
        html.print(" checked")
    end
    html.print("></td></tr>")
    if phycount > 1 and wifi_enable == "1" then
        local defaultwifi = aredn.hardware.get_default_channel(wifi_intf)
        local alt_wifi = (not phy or phy == "phy0") and "wlan1" or "wlan0"
        html.print("<tr><td>Band</td><td><select name=wifi_intf onChange='form.submit()'>")
        if defaultwifi.channel == 149 then
            html.print("<option value='" .. alt_wifi .. "'>2GHz</option>")
            html.print("<option value='" .. wifi_intf .. "' selected>5GHz</option>")
        else
            html.print("<option value='" .. wifi_intf .. "' selected>2GHz</option>")
            html.print("<option value='" .. alt_wifi .. "'>5GHz</option>")
        end
        html.print("</select></td></tr>")
    end
end
html.print("<tr><td><nobr>IP Address</nobr></td><td><input type=text size=15 name=wifi_ip value='" .. wifi_ip .. "'></td></tr><tr><td>Netmask</td><td><input type=text size=15 name=wifi_mask value='" .. wifi_mask  .. "'></td></tr>")

if wifi_enable == "1" then
    html.print("<tr><td>SSID</td><td><input type=text size=15 name=wifi_ssid value='" .. wifi_ssid .. "'>-" .. wifi_chanbw .. "-v3</td></tr>")
    hidden[#hidden + 1] = "<input type=hidden name=wifi_mode value='" .. wifi_mode .. "'>"
    html.print("<tr><td>Channel</td><td><select name=wifi_channel>")
    local rfchannels = aredn.hardware.get_rfchannels(wifi_intf)
    table.sort(rfchannels, function(a, b) return a.number < b.number end)
    for _, chan in ipairs(rfchannels)
    do
        html.print("<option value='" .. chan.number .. "' ".. (chan.number == tonumber(wifi_channel) and " selected" or "") .. ">" .. chan.label .. "</option>")
    end
    html.print("</select>&nbsp;&nbsp;<a href='/help.html#channel' target='_blank'><img src='/qmark.png'></a></td></tr>")

    html.print("<tr><td>Channel Width</td><td><select name=wifi_chanbw>")
    for _, width in ipairs(aredn.hardware.get_rfbandwidths(wifi_intf))
    do
        html.print("<option value='" .. width .. "'".. (wifi_chanbw == tostring(width) and " selected" or "") .. ">" .. width .. " MHz</option>")
    end
    html.print("</select></td></tr>")

    hidden[#hidden + 1] = "<input type=hidden name=wifi_country value='HX'>"

    if lqm_mode then
        html.print("<tr><th colspan=2 align=center><hr><small>Power &amp; Link Quality</small></th></tr>")
    else
        html.print("<tr><th colspan=2 align=center><hr><small>Power &amp; Distance</small></th></tr>")
    end
    html.print("<tr><td><nobr>Tx Power</nobr></td><td><select name=wifi_txpower>")
    local txpoweroffset = aredn.hardware.wifi_poweroffset(wifi_intf)
    for i = aredn.hardware.wifi_maxpower(wifi_intf, wifi_channel),1,-1
    do
        html.print("<option value='" .. i .. "'".. (i == tonumber(wifi_txpower) and " selected" or "") .. ">" .. (txpoweroffset + i) .. " dBm</option>")
    end
    html.print("</select>&nbsp;&nbsp;<a href='/help.html#power' target='_blank'><img src='/qmark.png'></a></td></tr>")
    if lqm_mode then
        local lqm_max_distance = tonumber(cursor:get("aredn", "@lqm[0]", "max_distance")) or 114750
        local lqm_min_snr = cursor:get("aredn", "@lqm[0]", "min_snr") or "15"
        local lqm_min_quality = cursor:get("aredn", "@lqm[0]", "min_quality") or "50"
        html.print([[
            <tr><td>Max Distance</td><td>
            <script>
                var dm = ]] .. lqm_max_distance .. [[;
                switch (navigator.language.split("-")[1] || "unknown") {
                    case "US":
                    case "GB":
                        document.write("<input type=hidden name='lqm_distance_unit' value='mile'><input type=text size=4 name='lqm_max_distance' value='" + (dm / 1609.344).toFixed(1) + "' title='Maximum distance to a neighbor before it will be ignored'>&nbsp;miles")
                        break;
                    default:
                        document.write("<input type=hidden name='lqm_distance_unit' value='kilometer'><input type=text size=4 name='lqm_max_distance' value='" + (dm / 1000).toFixed(1) + "' title='Maximum distance to a neighbor before it will be blocked'>&nbsp;km")
                        break;
                }
            </script>
						&nbsp;&nbsp;<a href='/help.html#linkqual' target='_blank'><img src='/qmark.png'></a>
            </td></tr>
        ]])
        html.print("<tr><td>Min SNR</td><td><input type=text size=4 name='lqm_min_snr' value='" .. lqm_min_snr .. "' title='Minimum SNR of neighbor before it will be accepted'>&nbsp;dB</td></tr>")
        html.print("<tr><td>Min Quality</td><td><input type=text size=4 name='lqm_min_quality' value='" .. lqm_min_quality .. "' title='Minimum acceptable link quality'>&nbsp;%</td></tr>")
    else
        html.print("<tr id='dist' class='dist-norm'><td>Distance to<br/>FARTHEST Neighbor<br/><h3>'0' is auto</h3></td>")

        local wifi_distance = math.floor(tonumber(wifi_distance))
        local wifi_distance_disp_km = math.floor(wifi_distance / 1000)
        local wifi_distance_disp_miles = string.format("%.2f", wifi_distance_disp_km * 0.621371192)
        html.print("<td><input disabled size=6 type=text name='wifi_distance_disp_miles' value='" .. wifi_distance_disp_miles .. "' title='Distance to the farthest neighbor'>&nbsp;mi&nbsp;&nbsp;<a href='/help.html#distance' target='_blank'><img src='/qmark.png'></a><br />")
        html.print("<input disabled size=6 type=text size=4 name='wifi_distance_disp_km' value='" .. wifi_distance_disp_km .. "' title='Distance to the farthest neighbor'>&nbsp;km<br />")
        html.print("<input disabled size=6 type=text size=4 name='wifi_distance_disp_meters' value='" .. wifi_distance .."' title='Distance to the farthest neighbor'>&nbsp;m<br />")
        html.print("<input id='distance_slider' type='range' min='0' max='150' step='1' value='" .. wifi_distance_disp_km .."' oninput='updDist(this.value)' onchange='updDist(this.value)' /><br />")
        html.print("<input type='hidden' size='6' name='wifi_distance' value='" .. wifi_distance .. "' />")
        html.print("</td></tr>")
    end
    html.print("<tr><td></td><td><input type=submit name=button_apply value=Apply title='Immediately use these active settings'></td></tr>")
else
    hidden[#hidden + 1] = "<input type=hidden name=wifi_ssid value='" .. wifi_ssid .."'>"
    hidden[#hidden + 1] = "<input type=hidden name=wifi_mode value='" .. wifi_mode .. "'>"
    hidden[#hidden + 1] = "<input type=hidden name=wifi_txpower value='" .. wifi_txpower .."'>"
    hidden[#hidden + 1] = "<input type=hidden name=wifi_channel value='" .. wifi_channel .."'>"
    hidden[#hidden + 1] = "<input type=hidden name=wifi_chanbw value='" .. wifi_chanbw .."'>"
    hidden[#hidden + 1] = "<input type=hidden name=wifi_distance value='" .. wifi_distance .."'>"
    hidden[#hidden + 1] = "<input type=hidden name=wifi_country value='HX'>"
end

html.print("</table></td>")

-- lan settings

html.print([[
<td valign=top width=33%><table width=100%>
<tr><th colspan=2>LAN</th></tr>
<tr>
<td>LAN Mode</td>
<td><select name=dmz_mode onChange='form.submit()'">
]])
html.print("<option value='0'".. (dmz_mode == 0 and " selected" or "") .. ">NAT</option>")
html.print("<option value='2'".. (dmz_mode == 2 and " selected" or "") .. ">1 host Direct</option>")
html.print("<option value='3'".. (dmz_mode == 3 and " selected" or "") .. ">5 host Direct</option>")
html.print("<option value='4'".. (dmz_mode == 4 and " selected" or "") .. ">13 host Direct</option>")
html.print("<option value='5'".. (dmz_mode == 5 and " selected" or "") .. ">29 host Direct</option>")
html.print("</select>&nbsp;&nbsp;<a href='/help.html#lanmode' target='_blank'><img src='/qmark.png'></a></td></tr>")
hidden[#hidden + 1] = "<input type=hidden name=lan_proto value='static'>"

if dmz_mode ~= 0 then
    html.print("<tr><td><nobr>IP Address</nobr></td><td>" .. dmz_lan_ip .."</td></tr>")
    hidden[#hidden + 1] = "<input type=hidden name=dmz_lan_ip value='" .. dmz_lan_ip .. "'>"

    html.print("<tr><td>Netmask</td><td>" .. dmz_lan_mask .. "</td></tr>")
    hidden[#hidden + 1] = "<input type=hidden name=dmz_lan_mask value='" ..dmz_lan_mask .. "'>"

    html.print("<tr><td><nobr>DHCP Server</nobr></td><td><input type=checkbox name=lan_dhcp value=1" .. (lan_dhcp ~= "0" and " checked" or "") .. "></td></tr>")
    html.print("<tr><td><nobr>DHCP Start</nobr></td><td>" .. dmz_dhcp_start .. "</td></tr>")
    hidden[#hidden + 1] = "<input type=hidden name=dmz_dhcp_start value='" .. dmz_dhcp_start .. "'>"

    html.print("<tr><td><nobr>DHCP End</nobr></td><td>" .. dmz_dhcp_end .. "</td></tr>")
    hidden[#hidden + 1] = "<input type=hidden name=dmz_dhcp_end value='" .. dmz_dhcp_end .. "'>"

    hidden[#hidden + 1] = "<input type=hidden name=lan_ip     value='" .. lan_ip .."'>"
    hidden[#hidden + 1] = "<input type=hidden name=lan_mask   value='" .. lan_mask .."'>"
    hidden[#hidden + 1] = "<input type=hidden name=dhcp_start value='" .. dhcp_start .. "'>"
    hidden[#hidden + 1] = "<input type=hidden name=dhcp_end   value='" .. dhcp_end .. "'>"
    hidden[#hidden + 1] = "<input type=hidden name=lan_gw     value='" .. lan_gw .."'>"
else
    html.print("<tr><td><nobr>IP Address</nobr></td><td><input type=text size=15 name=lan_ip value='" .. lan_ip .. "'></td></tr>")
    html.print("<tr><td>Netmask</td><td><input type=text size=15 name=lan_mask value='" .. lan_mask .."'></td></tr>")
    if wan_proto == "disabled" then
        html.print("<tr><td>Gateway</td><td><input type=text size=15 name=lan_gw value='" .. lan_gw .. "' title='leave blank if not needed'></td></tr>")
    else
        hidden[#hidden + 1] = "<input type=hidden name=lan_gw     value='" .. lan_gw .. "'>"
    end
    html.print("<tr><td><nobr>DHCP Server</nobr></td><td><input type=checkbox name=lan_dhcp value=1" .. (lan_dhcp ~= "0" and " checked" or "") .. "></td></tr>")
    html.print("<tr><td><nobr>DHCP Start</nobr></td><td><input type=text size=4 name=dhcp_start value='" .. dhcp_start .. "'></td></tr>")
    html.print("<tr><td><nobr>DHCP End</nobr></td><td><input type=text size=4 name=dhcp_end value='" .. dhcp_end .. "'></td></tr>")

    hidden[#hidden + 1] = "<input type=hidden name=dmz_lan_ip     value='" .. dmz_lan_ip .. "'>"
    hidden[#hidden + 1] = "<input type=hidden name=dmz_lan_mask   value='" .. dmz_lan_mask .. "'>"
    hidden[#hidden + 1] = "<input type=hidden name=dmz_dhcp_start value='" .. dmz_dhcp_start .. "'>"
    hidden[#hidden + 1] = "<input type=hidden name=dmz_dhcp_end   value='" .. dmz_dhcp_end .. "'>"
end

local APokay = nixio.fs.stat("/usr/sbin/wpad")
if APokay and ((phycount > 1 and (wifi_enable ~= "1" or wifi3_enable ~= "1")) or (phycount == 1 and wifi_enable ~= "1" and wifi3_enable ~= "1") and not M39model) then
    html.print("<tr><td colspan=2><hr></hr></td></tr>")
    -- lan ap shows as an option
    -- determine hardware options and set band ahd channels accordingly
    if phycount == 1 then
        chan = aredn.hardware.get_rfchannels("wlan0")
        if chan[1].frequency < 3000 then
            wifi2_hwmode = "11g"
            if wifi2_channel > 14 then
                wifi2_channel = 1
            end
        else
            wifi2_hwmode = "11a"
            if wifi2_channel < 36 then
                wifi2_channel = 36
            end
        end
    else
        -- 2 band device
        if wifi_enable == "1" then
            local alt_wifi = (not phy or phy == "phy0") and "wlan1" or "wlan0"
            chan = aredn.hardware.get_rfchannels(alt_wifi)
            if #chan == 0 then
                -- Hardware device can crash after switching - so at least make the page render until a reboot
                chan[1] = { frequency = 2412, number = 1, label = nil }
            end
            if chan[1].frequency < 3000 then
                wifi2_hwmode = "11g"
                if wifi2_channel > 14 then
                    wifi2_channel = 1
                end
            else
                wifi2_hwmode = "11a"
                if wifi2_channel < 36 then
                    wifi2_channel = 36
                end
            end
        else
            if wifi2_enable ~= "1" and wifi3_enable == "1" and wifi3_hwmode == "11a" then
                wifi2_hwmode = "11g"
            end
            if wifi2_enable ~= "1" and wifi3_enable == "1" and wifi3_hwmode == "11g" then
                wifi2_hwmode = "11a"
            end
            local chan0 = aredn.hardware.get_rfchannels("wlan0")
            local chan1 = aredn.hardware.get_rfchannels("wlan1")
            if wifi2_hwmode == "11a" then
                if #chan0 >= 1 and chan0[1].frequency > 3000 then
                    chan = chan0
                else
                    chan = chan1
                end
                if wifi2_channel < 36 then
                    wifi2_channel = 36
                end
            else
                if #chan0 >= 1 and chan0[1].frequency < 3000 then
                    chan = chan0
                else
                    chan = chan1
                end
                if wifi2_channel > 14 then
                    wifi2_channel = 1
                end
            end
        end
    end
    html.print("<tr><th colspan=2><small>LAN Access Point</small></th></tr><tr><td>Enable</td><td><input type=checkbox name=wifi2_enable value=1" .. (wifi2_enable == "1" and " checked" or "") .. ">&nbsp;&nbsp;<a href='/help.html#lanap' target='_blank'><img src='/qmark.png'></a></td></tr>")
    if phycount > 1 then
        if wifi_enable ~= "1" then
            html.print("<tr><td>AP band</td><td><select name=wifi2_hwmode>")
            html.print("<option value='11g'".. (wifi2_hwmode == "11g" and " selected" or "") .. ">2GHz</option>")
            html.print("<option value='11a'".. (wifi2_hwmode == "11a" and " selected" or "") .. ">5GHz</option>")
            html.print("</select></td></tr>")
        else
            html.print("<tr><td>AP band</td><td>" .. (wifi2_hwmode == "11g" and "2GHz" or "5GHz") .. "</td></tr>")
            hidden[#hidden + 1] = "<input type=hidden name=wifi2_hwmode  value='" .. wifi2_hwmode .."'>"
        end
    else
        hidden[#hidden + 1] = "<input type=hidden name=wifi2_hwmode  value='" .. wifi2_hwmode .."'>"
    end
    html.print("<tr><td>SSID</td><td><input type=text size=15 name=wifi2_ssid value='" .. wifi2_ssid .."'></td></tr>")
    html.print("<tr><td>Channel</td><td><select name=wifi2_channel>")
    if chan[1].frequency > 3000 then
        html.print("<optgroup label='Standard Channels'>")
        for _, ch in ipairs(chan)
        do
            if ch.number < 163 or ch.number == 165 then
                html.print("<option value='" .. ch.number .. "'" .. (wifi2_channel == ch.number and " selected" or "") .. ">" .. ch.number .. "</option>")
            end
        end
        html.print("</optgroup>")
        html.print("<optgroup label='Extended Channels'>")
        for _, ch in ipairs(chan)
        do
            if ch.number == 163 or ch.number > 165 then
                html.print("<option value='" .. ch.number .. "'" .. (wifi2_channel == ch.number and " selected" or "") .. ">" .. ch.number .. "</option>")
            end
        end
        html.print("</optgroup>")
    else
        for _, ch in ipairs(chan)
        do
            html.print("<option value='" ..ch.number .. "'" .. (wifi2_channel == ch.number and " selected" or "") .. ">" .. ch.number .. "</option>")
        end
    end
    html.print("</select></td></tr>")
    html.print("<tr><td>Encryption</td><td><select name=wifi2_encryption>")
    html.print("<option value='psk2'".. (wifi2_encryption == "psk2" and " selected" or "") .. ">WPA2 PSK</option>")
    html.print("<option value='psk'".. (wifi2_encryption == "psk" and " selected" or "") .. ">WPA PSK</option>")
    html.print("</select></td></tr><tr><td>Password</td><td><input class='password-input' type=password size=15 name=wifi2_key value='" .. wifi2_key .. "'><i class='password-toggle'></i></td></tr>")
else
    hidden[#hidden + 1] = "<input type=hidden name=wifi2_enable     value='" .. (wifi2_enable or "") .. "'>"
    hidden[#hidden + 1] = "<input type=hidden name=wifi2_ssid       value='" .. (wifi2_ssid or "") .. "'>"
    hidden[#hidden + 1] = "<input type=hidden name=wifi2_key        value='" .. (wifi2_key or "") .. "'>"
    hidden[#hidden + 1] = "<input type=hidden name=wifi2_channel    value='" .. (wifi2_channel or "") .."'>"
    hidden[#hidden + 1] = "<input type=hidden name=wifi2_encryption value='" .. (wifi2_encryption or "") .. "'>"
    hidden[#hidden + 1] = "<input type=hidden name=wifi2_hwmode     value='" .. (wifi2_hwmode or "") .."'>"
end

html.print("</table></td>")

-- wan settings
html.print("<td valign=top width=33%><table width=100%><tr><th colspan=2>WAN</th></tr><tr><td width=50%>Protocol</td><td><select name=wan_proto onChange='form.submit()'>")
html.print("<option value='static'".. (wan_proto == "static" and " selected" or "") .. ">Static</option>")
html.print("<option value='dhcp'".. (wan_proto == "dhcp" and " selected" or "") .. ">DHCP</option>")
html.print("<option value='disabled'".. (wan_proto == "disabled" and " selected" or "") .. ">disabled</option>")
html.print("</select></td></tr>")

if wan_proto == "static" then
    html.print("<tr><td><nobr>IP Address</nobr></td>")
    html.print("<td><input type=text size=15 name=wan_ip value='" .. wan_ip .."'></td></tr>")
    html.print("<tr><td>Netmask</td>")
    html.print("<td><input type=text size=15 name=wan_mask value='" .. wan_mask .. "'></td></tr>")
    html.print("<tr><td>Gateway</td>")
    html.print("<td><input type=text size=15 name=wan_gw value='" .. wan_gw .. "'></td></tr>")
else
    hidden[#hidden + 1] = "<input type=hidden name=wan_ip value='" .. wan_ip .. "'>"
    hidden[#hidden + 1] = "<input type=hidden name=wan_mask value='" .. wan_mask .. "'>"
    hidden[#hidden + 1] = "<input type=hidden name=wan_gw value='" .. wan_gw .."'>"
end

html.print("<tr><td><nobr>DNS 1</nobr></td><td><input type=text size=15 name=wan_dns1 value='" .. wan_dns1 .. "'></td></tr>")
html.print("<tr><td><nobr>DNS 2</nobr></td><td><input type=text size=15 name=wan_dns2 value='" .. wan_dns2 .. "'></td></tr>")

-- wan wifi client
if APokay and ((phycount > 1 and (wifi_enable ~= "1" or wifi2_enable ~= "1")) or (phycount == 1 and wifi_enable ~= "1" and wifi2_enable ~= "1")) and not M39model then
    -- wifi client shows as an option
    -- determine hardware options and set band accordingly
    html.print("<tr><th colspan=2><hr></td></tr>")

    if phycount == 1 then
        local rc3 = os.execute("iw phy phy0 info | grep -q '5180 MHz' > /dev/null")
        if rc3 ~= 0 then
            wifi3_hwmode = "11g"
        else
            wifi3_hwmode = "11a"
        end
    else
        -- 2 band
        if wifi_enable == "1" then
            local defaultwifi = aredn.hardware.get_default_channel(wifi_intf)
            if defaultwifi.channel == 149 then
                wifi3_hwmode = "11g"
            else
                wifi3_hwmode = "11a"
            end
        else
            if wifi2_hwmode == "11g" and wifi2_enable == "1" then
                wifi3_hwmode = "11a"
            end
            if wifi2_hwmode == "11a" and wifi2_enable == "1" then
                wifi3_hwmode = "11g"
            end
        end
    end

    local connected = "/notdone.png"
    local cmessage = "Not connected."
    local wanintf = aredn.hardware.get_iface_name("wan")
    local essid = capture_and_match("iwinfo " .. wanintf .. " info", 'ESSID: "(.+)"')
    if essid == wifi3_ssid then
        if pingOK then
            connected = "/donedone.png"
            cmessage = "Connected to Wifi and Internet."
        else
            connected = "/done.png"
            cmessage = "Connected to Wifi. Not connected to Internet."
        end
    end

    html.print("<tr><th colspan=2><small>WAN Wifi Client&nbsp;<img style='vertical-align:text-bottom' src='" .. connected .. "' title='" .. cmessage .. "'></small></th></tr>")
    html.print("<tr><td>Enable</td><td><input type=checkbox name=wifi3_enable value=1" .. (wifi3_enable == "1" and " checked" or "") .. ">&nbsp;&nbsp;<a href='/help.html#wanclient' target='_blank'><img src='/qmark.png'></a></td></tr>")

    if wifi_enable ~= "1" and wifi2_enable ~= "1" and phycount > 1 then
        html.print("<tr><td>WAN Wifi Client band</td><td><select name=wifi3_hwmode>")
        html.print("<option value='11g'".. (wifi3_hwmode == "11g" and " selected" or "") .. ">2GHz</option>")
        html.print("<option value='11a'".. (wifi3_hwmode == "11a" and " selected" or "") .. ">5GHz</option>")
        html.print("</select></td></tr>")
    else
        hidden[#hidden + 1] = "<input type=hidden name=wifi3_hwmode value='" .. wifi3_hwmode .. "'>"
    end

    html.print("<tr><td>SSID</td><td><input type=text name=wifi3_ssid size=15 value='" .. wifi3_ssid .."'></select></td></tr>")
    html.print("<tr><td>Password</td><td><input class='password-input' type=password size=15 name=wifi3_key value='" .. wifi3_key .. "'><i class='password-toggle'></i></td></tr>")
else
    hidden[#hidden + 1] = "<input type=hidden name=wifi3_enable     value='" .. wifi3_enable .. "'>"
    hidden[#hidden + 1] = "<input type=hidden name=wifi3_ssid       value='" .. wifi3_ssid .. "'>"
    hidden[#hidden + 1] = "<input type=hidden name=wifi3_key        value='" .. wifi3_key .. "'>"
    hidden[#hidden + 1] = "<input type=hidden name=wifi3_hwmode     value='" .. wifi3_hwmode .. "'>"
end
-- end wan wifi client

html.print("</table></td></tr></table></td></tr></table><br></td></tr>")

-- Location and antenna settings
html.print("<tr><td align=center>")
html.print("<table border=0 style='min-width:790px'>")
html.print("<tr><th colspan=4>Location Settings</th></tr>")
html.print("<tr><td colspan=4><hr /></td></tr>")
html.print("<tr><td align=left>Latitude</td><td><input type=text name=latitude size=10 value='" .. lat .."' title='Latitude value (in decimal) (ie. 30.312354)' /></td>")
html.print("<td align='left' colspan='2'>")
local locdisabled = pingOK and "" or "disabled"
html.print("<button " .. locdisabled .. " type='button' id='findlocation' value='findloc' onClick='findLocation();'>Find Me!</button>&nbsp;")
html.print("<input type=submit name='button_updatelocation' value='Apply Location Settings' title='Immediately use these location settings'>")
html.print("&nbsp;<button " .. locdisabled .. " type='button' id='hideshowmap' value='show' onClick='toggleMap(this);'>Show Map</button>&nbsp;")
html.print("<input " .. locdisabled .. " type='submit' name='button_uploaddata' value='Upload data to AREDN Servers' />&nbsp;")

html.print("</td><tr><td align=left>Longitude</td><td><input type=text name=longitude size=10 value='" .. lon .. "' title='Longitude value (in decimal) (ie. -95.334454)' /></td><td align=left>Grid Square <input type=text name=gridsquare maxlength=6 size=6 value='" .. gridsquare .. "' title='Gridsquare value (ie. AB12cd)' /></td></tr>")
html.print("<tr><td colspan=4><div id='map' style='height: 200px; display: none;'></div></td></tr>")

if wifi_enable == "1" then
    html.print("<tr><th colspan=4 style='padding-top:20px'>Antenna Settings (optional)</th></tr>")
    html.print("<tr><td colspan=4><hr /></td></tr>")
    local ants = aredn.hardware.get_antennas(wifi_intf)
    local antsx = aredn.hardware.get_antennas_aux(wifi_intf)
    local changeh = true
    local changea = true
    if ants and #ants == 1 then
        changea = false
        antenna = ants[1].description
        if ants[1].beamwidth == 360 then
            changeh = false
        end
    end
    if not changeh then
        html.print("<tr><td align=left>Azimuth</td><td>-</td>")
    else
        html.print("<tr><td align=left>Azimuth</td><td><input type=text name=azimuth size=10 value='" .. azimuth .. "' title='azimuth (degrees)' /> &deg;</td>")
    end
    if not changea then
        html.print("<td align=left colspan=2>Antenna <input disabled value='" .. antenna .. "'></td>")
    elseif ants then
        html.print("<td align=left colspan=2>Antenna <select name=antenna>")
        for _, ant in ipairs(ants)
        do
            html.print("<option value='" .. ant.model .. "'" .. (ant.model == antenna and " selected" or "") .. ">" .. ant.description .. "</option>")
        end
        html.print("</select></td>")
    end
    if not changeh then
        html.print("</tr><tr><td align=left>Elevation</td><td>-</td>")
    else
        html.print("</tr><tr><td align=left>Elevation</td><td><input type=text name=elevation size=10 value='" .. elevation .. "' title='elevation above ground level (degrees)' /> &deg;</td>")
    end
    if antsx then
        html.print("<td align=left colspan=2>Aux Antenna <select name=antenna_aux>")
        for _, ant in ipairs(antsx)
        do
            html.print("<option value='" .. ant.model .. "'" .. (ant.model == antenna_aux and " selected" or "") .. ">" .. ant.description .. "</option>")
        end
        html.print("</select></td>")
    end
    html.print("</tr><tr><td align=left>Height</td><td><input type=text name=height size=10 value='" .. height .. "' title='height above ground level (meters)' /> m</tr>")
end
html.print("<tr><td colspan=4><hr /></td></tr>")
html.print("<tr><td colspan=2>Timezone <select name=time_zone_name tabindex=10>")
for _,zone in ipairs(tz_db_names)
do
    html.print("<option value='" .. zone.name .. "'".. (zone.name == time_zone_name and " selected" or "") .. ">" .. zone.name .. "</option>")
end
html.print("</select></td>")
html.print("<td align=center>NTP Server &nbsp; <input type=text name=ntp_server size=20 value='" .. ntp_server .. "'></td>")
if ntp_period == "daily" or not ntp_period then
    html.print("<td>NTP Updates &nbsp; <select name=ntp_period><option value='daily' selected>daily</option><option value='hourly'>hourly</option></select></td></table></td></tr></table>")
elseif ntp_period == "hourly" then
    html.print("<td>NTP Updates &nbsp; <select name=ntp_period><option value='daily'>daily</option><option value='hourly' selected>hourly</option></select></td></table></td></tr></table>")
end

hidden[#hidden + 1] = "<input type=hidden name=reload value=1>"
hidden[#hidden + 1] = "<input type=hidden name=dtdlink_ip value='" .. dtdlink_ip .. "'>"
if wan_intf then
    hidden[#hidden + 1] = "<input type=hidden name=wan_intf value='" .. wan_intf .. "'>"
end

for _,hid in ipairs(hidden)
do
    html.print(hid)
end

html.print("</form></center>")
html.print([[<style>
.password-input {
padding-right: 21px;
}
.password-toggle {
display: inline-block;
width: 21px;
height: 15px;
margin-left: -24px;
cursor: pointer;
background-image: url(/viz.png);
background-size: contain;
vertical-align: middle;
}
</style>
<script>
function togglePassword(e) {
    var target = e.target.previousSibling;
    if (target.type === "password") {
        target.type = "text";
    }
    else {
        target.type = "password";
    }
}
var fields = document.querySelectorAll(".password-toggle");
for (var i = 0; i < fields.length; i++) {
    fields[i].addEventListener("click", togglePassword);
}
</script>]])
html.footer()
html.print("</body></html>")
http_footer()