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#!/usr/bin/lua
--[[
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Part of AREDN -- Used for creating Amateur Radio Emergency Data Networks
Copyright (C) 2022 Tim Wilkinson
See Contributors file for additional contributors
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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.
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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.
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You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
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Additional Terms:
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Additional use restrictions exist on the AREDN(TM) trademark and logo.
See AREDNLicense.txt for more info.
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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.
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You must not misrepresent the origin of the material contained within.
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Modified versions must be modified to attribute to the original source
and be marked in reasonable ways as differentiate it from the original
version
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--]]
require("uci")
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require("nixio")
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local info = require("aredn.info")
local node = info.get_nvram("node")
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local q = os.getenv("QUERY_STRING") or ""
local server = q:match("server=([^&]*)")
local protocol = q:match("protocol=([^&]*)") or "tcp"
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print "Content-type: text/html\r"
print "Cache-Control: no-store\r"
print("Access-Control-Allow-Origin: *\r")
print("\r")
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if uci.cursor():get("aredn", "@iperf[0]", "enable") == "0" then
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print("<html><head><title>CLIENT DISABLED</title></head><body><pre>iperf is disabled</pre></body></html>")
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elseif not server then
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print("<html><head></head><body><pre>Provide a server name to run a test between this client and a server [/cgi-bin/iperf?server=<ServerName>&protocol=<udp|tcp>]</pre></body></html>")
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elseif server:match("[^%w%-%.]") then
print("<html><head><title>ERROR</title></head><body><pre>Illegal server name</pre></body></html>")
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else
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-- Using io.popen here causes the script to terminate (a bug?), so we have this workaround
if os.execute('if [ "$(pidof iperf3)" = "" ]; then exit 0; else exit 1; fi') ~= 0 then
print("<html><head><title>BUSY</title></head><body><pre>iperf server busy</pre></body></html>")
return
end
if server == "" then
os.execute("iperf3 -s -D -1 --idle-timeout 20 -B " .. node)
nixio.nanosleep(1, 0)
print("<html><head><title>RUNNING</title></head><body><pre>iperf server running</pre></body></html>")
else
if not server:match("%.") then
server = server .. ".local.mesh"
end
local status = ""
local f = io.popen("wget -q -O - 'http://" .. server .. ":8080/cgi-bin/iperf?server=' 2>&1")
if f then
status = f:read("*a")
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f:close()
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end
if status:match("running") then
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print("<html><head><title>SUCCESS</title></head><body><pre>Client: " .. node .. "\nServer: " .. server .. "\n" .. io.popen("p=$$;setsid sh -c \"(sleep 20; kill $p)\" > /dev/null 2>&1 & /usr/bin/iperf3 --forceflush -b 0 -Z -c " .. server .. (protocol == "udp" and " -u" or "") .. " -l 1K 2>&1"):read("*a") .. "</pre></body></html>")
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elseif status:match("iperf is disabled") then
print("<html><head><title>SERVER DISABLED</title></head><body><pre>iperf server is disabled</pre></body></html>")
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else
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print("<html><head><title>SERVER ERROR</title></head><body><pre>iperf server failed to start server</pre></body></html>")
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end
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end
end
