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script.ts
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script.ts
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import { parseArgs } from "https://deno.land/[email protected]/cli/parse_args.ts";
import { BaseHandler } from "https://deno.land/[email protected]/log/handlers.ts";
import * as log from "https://deno.land/[email protected]/log/mod.ts";
type ServerDataJSON = {
hostname: string;
country_code: string;
country_name: string;
city_code: string;
city_name: string;
active: boolean;
owned: boolean;
provider: string;
ipv4_addr_in: string;
ipv6_addr_in: string;
network_port_speed: number;
stboot: boolean;
type: string;
};
type ServerPingData = {
hostname: string;
city: string;
country: string;
type: string;
ip: string;
avg: number;
network_port_speed: number;
}
let lastSleep = 0;
function sleep() {
lastSleep += 10
const thisSleep = lastSleep
return new Promise((resolve) => setTimeout(resolve, thisSleep));
}
function checkRunMode(stboot: boolean, runMode: string) {
if (runMode == "all") {
return true;
} else if (runMode == "ram" && stboot == true) {
return true;
} else if (runMode == "disk" && stboot == false) {
return true;
}
return false;
}
const serverTypes = ["openvpn", "bridge", "wireguard", "all"];
const runTypes = ["all", "ram", "disk"];
const args = parseArgs(Deno.args);
function setupLogs(): log.Logger {
function stderrHandler(this: BaseHandler, logRecord: log.LogRecord) {
if (this.level > logRecord.level) return;
const msg = this.format(logRecord);
if (logRecord.level >= log.LogLevels.ERROR) console.error(msg)
else this.log(msg);
}
const pipeFmt = new log.handlers.BaseHandler("INFO", { formatter: "{msg}" })
pipeFmt.log = console.log
pipeFmt.handle = stderrHandler
const debugFmt = new log.handlers.ConsoleHandler("DEBUG")
debugFmt.handle = stderrHandler
log.setup({
handlers: {
pipeFmt,
debugFmt,
},
loggers: {
pipe: {
level: 'INFO',
handlers: ["pipeFmt"],
},
debug: {
level: 'DEBUG',
handlers: ["debugFmt"],
},
}
})
const logger = args.debug ? 'debug' : 'pipe'
return log.getLogger(logger);
}
const logger = setupLogs()
if (args.help || args.h) {
logger.info(`Usage: script [OPTION]
--country <code> the country you want to query (eg. us, gb, de)
--list-countries lists the available countries
--type <type> the type of server to query (${
serverTypes.join(", ")
})
--count <n> the number of pings to the server (default 3)`);
if (Deno.build.os != "windows") {
logger.info(
` --interval <i> the interval between pings in seconds (default/min 0.2)`,
);
}
logger.info(
` --top <n> the number of top servers to show, (0=all)
--port-speed <n> only show servers with at least n Gigabit port speed
--provider <name> only show servers from the given provider
--owned <true|false> only show servers owned by Mullvad
--run-mode <type> only show servers running from (${
runTypes.join(", ")
})
--help usage information`,
);
Deno.exit(0);
}
const country = args.country?.toLowerCase() ?? "ch";
const serverType = args.type?.toLowerCase() ?? "wireguard";
if (!serverTypes.includes(serverType)) {
throw new Error(`Invalid type, allowed types are: ${serverTypes.join(", ")}`);
}
const interval = parseFloat(args.interval ?? 0.2) || 0.2;
if (interval < 0.2) {
throw new Error("Minimum interval value is 0.2");
}
const count = parseInt(args.count ?? 3) || 3;
const topN = parseInt(args.top ?? 5) || 5;
const portSpeed = parseInt(args["port-speed"] ?? 0) || 0;
const runMode = args["run-mode"]?.toLowerCase() ?? "all";
if (!runTypes.includes(runMode)) {
throw new Error(
`Invalid run-mode, allowed types are: ${runTypes.join(", ")}`,
);
}
let owned: boolean | null = null;
if (args.owned != null) {
if (args.owned == "true") {
owned = true;
} else if (args.owned == "false") {
owned = false;
} else {
throw new Error("Invalid value for owned, must be true or false");
}
}
const provider = args.provider;
logger.debug("Fetching currently available relays...");
const response = await fetch(
`https://api.mullvad.net/www/relays/${serverType}/`,
);
const json: Array<ServerDataJSON> = await response.json();
function parsePing(output: string, server: ServerDataJSON) {
// [all, min, avg, max, mdev]
const regex =
/(?<min>\d+(?:.\d+)?)\/(?<avg>\d+(?:.\d+)?)\/(?<max>\d+(?:.\d+)?)\/(?<mdev>\d+(?:.\d+)?)/;
const values = output.match(regex);
if (values) {
logger.debug(
`Pinged ${server.hostname}.mullvad.net, min/avg/max/mdev ${values[0]
}`,
);
const result: ServerPingData = {
hostname: server.hostname,
city: server.city_name,
country: server.country_name,
type: server.type,
ip: server.ipv4_addr_in,
avg: parseFloat(values[2]) || 0,
network_port_speed: server.network_port_speed,
};
return result
}
logger.error(`no output match for ${server.hostname} - ${output}`)
return null
}
if (args["list-countries"]) {
const countries = new Set();
json.forEach((e) => {
countries.add(`${e.country_code} - ${e.country_name}`);
});
countries.forEach((e) => {
logger.info(e);
});
} else {
const pings = [];
for (const server of json) {
if (
(country == null || country == server.country_code) &&
(server.network_port_speed >= portSpeed) &&
checkRunMode(server.stboot, runMode) &&
(provider == null || provider == server.provider) &&
(owned == null || owned == server.owned)
) {
const args = [
"-c",
count.toString(),
"-i",
interval.toString(),
server.ipv4_addr_in,
];
const p = new Deno.Command(
"/sbin/ping",
{
args,
stdout: "piped",
},
);
logger.debug(`sending ping to ${server.ipv4_addr_in}`)
pings.push(sleep().then(_ => p.output()).then((cmdout: Deno.CommandOutput) => {
const decoder = new TextDecoder()
const stderr = decoder.decode(cmdout.stderr)
if (stderr) throw new Error(stderr)
const stdout = decoder.decode(cmdout.stdout)
return parsePing(stdout, server)
}))
}
}
const results = (await Promise.all(pings)).filter((r): r is ServerPingData => r !== null)
logger.debug('got results')
results.sort((a, b) => {
return a.avg - b.avg;
})
// logger.debug(results)
const top = topN == 0 ? results : results.slice(0, topN);
logger.debug('got top '+topN)
if (top.length > 0) {
logger.debug('\n\n\n')
logger.debug(`Top ${top.length} results:`);
for (const e of top) {
logger.debug(
` - ${e.hostname}.mullvad.net (${
e.avg.toFixed(1)
}ms) ${e.network_port_speed} Gigabit ${e.type} ${e.city}, ${e.country}`,
);
}
logger.debug('')
logger.info(top[0].hostname)
} else {
logger.error("No servers found");
}
}