73 lines
1.8 KiB
PHP
73 lines
1.8 KiB
PHP
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#!/usr/bin/env php
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<?php
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if (file_exists(__DIR__ . '/../vendor/autoload.php')) {
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require __DIR__ . '/../vendor/autoload.php';
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} else {
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require __DIR__ . '/../../../../vendor/autoload.php';
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}
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use Firebase\JWT\JWT;
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/**
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* A function that prints the usage help message to standard output
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*/
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function showUsage()
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{
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fwrite(
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STDOUT,
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"Usage:
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generate_jwt.php -u=<username> -s=<secret>
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generate_jwt.php --username=<username> --secret=<secret>
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generate_jwt.php (-h | --help)\n"
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);
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}
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/**
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* Generate a JWT for a given user
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*
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* @param string $username The username of the user we generate a JWT for
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* @param string $secret The JWT secret signing key
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* @return string The JWT of the user
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*/
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function generateJwt(string $username, string $secret): string
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{
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$jwtPayload = array(
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"user" => $username
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);
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return JWT::encode($jwtPayload, $secret, "HS256");
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}
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// Specify the CLI options, passed to getopt()
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$shortOptions = "hu:s:";
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$longOptions = ["help", "username:", "secret:"];
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// Obtain the CLI args, passed to the script via getopt()
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$cliOptions = getopt($shortOptions, $longOptions);
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// If there was some issue with the CLI args, we show the help message
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if ($cliOptions === false) {
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showUsage();
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exit(1);
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}
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// We check if a username was provided
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if (
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(isset($cliOptions["u"]) || isset($cliOptions["username"]))
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&& (isset($cliOptions["s"]) || isset($cliOptions["secret"]))
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) {
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$username = isset($cliOptions["u"]) ? $cliOptions["u"] : $cliOptions["username"];
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$secret = isset($cliOptions["s"]) ? $cliOptions["s"] : $cliOptions["secret"];
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} else {
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// If no username or secret was provided, we let the user know
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fwrite(STDERR, "A username and a secret JWT key must be provided\n");
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showUsage();
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exit(1);
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}
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$jwt = generateJwt($username, $secret);
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fwrite(STDOUT, "$jwt\n");
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exit(0);
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