#!/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 .
Additional Terms:
Additional use restrictions exist on the AREDN(TM) 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')
require('luci.sys')
local html = require("aredn.html")
local aredn_info = require("aredn.info")
local errors = {}
local output = {}
local hidden = {}
-- uci cursor
local cursor = uci.cursor()
-- helpers start
local rf_channel_map = {
["900"] = {},
["2400"] = {},
["3400"] = {},
["5500"] = {},
["5800ubntus"] = {}
}
for i = 4,7
do
rf_channel_map["900"][i - 3] = { label = i .. " (" .. (887 + i * 5) .. ")", number = i, frequency = 887 + i * 5 }
end
for i = -2,11
do
rf_channel_map["2400"][i + (i <= 0 and 3 or 2)] = { label = i .. " (" .. (2407 + i * 5) .. ")", number = i, frequency = 2407 + i * 5 }
end
for i = 76,99
do
rf_channel_map["3400"][i - 75] = { label = i .. " (" .. (3000 + i * 5) .. ")", number = i, frequency = 3000 + i * 5 }
end
for i = 36,64,4
do
rf_channel_map["5500"][(i - 32) / 4] = { label = i .. " (" .. (5000 + i * 5) .. ")", number = i, frequency = 5000 + i * 5 }
end
for i = 100,140,4
do
rf_channel_map["5500"][(i - 64) / 4] = { label = i .. " (" .. (5000 + i * 5) .. ")", number = i, frequency = 5000 + i * 5 }
end
for i = 149,165,4
do
rf_channel_map["5500"][(i - 69) / 4] = { label = i .. " (" .. (5000 + i * 5) .. ")", number = i, frequency = 5000 + i * 5 }
end
for i = 131,184
do
rf_channel_map["5800ubntus"][i - 130] = { label = i .. " (" .. (5000 + i * 5) .. ")", number = i, frequency = 5000 + i * 5 }
end
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 rf_channels_list(wifiintf)
local channels = {}
local rfband = aredn.hardware.get_rfband()
if rfband and rf_channel_map[rfband] then
return rf_channel_map[rfband]
else
local f = io.popen("iwinfo " .. wifiintf .. " freqlist")
if f then
for line in f:lines()
do
local freq, num = line:match("(%d+%.%d+) GHz %(Channel (%d+)%)")
if freq and not line:match("restricted") then
freq = freq:gsub("%.", "")
num = num:gsub("^0+", "")
channels[#channels + 1] = {
label = num .. " (" .. freq .. ")",
number = tonumber(num),
frequency = freq
}
end
end
f:close()
end
end
return channels
end
function wifi_txpoweroffset(wifiintf)
local doesiwoffset = capture_and_match("iwinfo " .. wifiintf .. " info", "TX power offset: (%d+)")
if doesiwoffset then
return tonumber(doesiwoffset)
end
return 0
end
function reboot()
local node = aredn_info.get_nvram("node")
if node == "" then
node = "Node"
end
local lanip, _, lanmask = aredn.hardware.get_interface_ip4(aredn.hardware.get_iface_name("lan"))
local browser = os.getenv("REMOTE_ADDR")
local browser6 = browser:match("::ffff:([%d%.]+)")
if browser6 then
browser = browser6
end
local fromlan = false
local subnet_change = false
if lanip then
fromlan = validate_same_subnet(browser, lanip, lanmask)
if fromlan then
lanmask = ip_to_decimal(lanmask)
local cfgip = cursor:get("network", "lan", "ipaddr")
local cfgmask = ip_to_decimal(cursor:get("network", "lan", "netmask"))
if lanmask ~= cfgmask or decimal_to_ip(nixio.bit.band(ip_to_decimal(lanip), lanmask)) ~= nixio.bit.band(ip_to_decimal(cfgip), cfgmask) then
subnet_change = true
end
end
end
http_header()
if fromlan and subnet_change then
html.header(node .. " rebooting", true);
html.print("
")
html.print("
" .. node .. " is rebooting
")
html.print("
The LAN subnet has changed. You will need to acquire a new DHCP lease ")
html.print("and reset any name service caches you may be using.