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check.php
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check.php
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<?php
/**
* Low-level CLI check of the PHP requirements and the CryptoManana `compatibility.php` script logic.
*
* @api
*/
// If web request, add MIME type
if (PHP_SAPI !== 'cli') {
header('Content-Type: text/html; charset=utf-8');
}
// Set debug configuration for check script
ini_set('display_startup_errors', '1');
ini_set('display_errors', '1');
ini_set('report_memleaks', '1');
ini_set('log_errors', '1');
error_reporting(E_ALL);
set_time_limit(120);
clearstatcache();
// Require the default framework compatibility script
require 'src' . DIRECTORY_SEPARATOR . 'compatibility.php';
// Define the script constants
/**
* Default row length for delimiters.
*/
define('DEFAULT_LENGTH', (PHP_SAPI === 'cli') ? 45 : 42);
/**
* Default new line for script output.
*/
define('NEW_LINE', (PHP_SAPI === 'cli') ? PHP_EOL : '<br/>');
/**
* Is the current system a X64 architecture
*/
define('IS_X64', (PHP_INT_SIZE === 8));
// Declare output functions
/**
* The dump script output function.
*
* @param string $data The data for outputting.
* @param string $colour The colour for outputting.
*/
function dump($data = PHP_EOL, $colour = 'green')
{
// Dump newline case
if ($data === PHP_EOL) {
echo NEW_LINE;
return;
}
if (!is_string($data)) {
$data = var_export($data, true);
}
// Is this a CLI call?
if (PHP_SAPI === 'cli') {
switch ($colour) {
case 'red':
$colour = "1;31m";
break;
case 'green':
$colour = "1;32m";
break;
case 'purple':
$colour = "1;35m";
break;
default:
$colour = "1;30m"; // black
break;
}
echo PHP_EOL . "\033[" . $colour . $data . "\033[0m" . PHP_EOL . PHP_EOL;
} else {
switch ($colour) {
case 'red':
$colour = "red";
break;
case 'green':
$colour = "green";
break;
case 'purple':
$colour = "purple";
break;
default:
$colour = "black"; // black
break;
}
echo "<p style='color: $colour;'>" . $data . "</p>" . NEW_LINE;
}
}
/**
* The check script output delimiter.
*
* @param int $length The length of the delimiter.
* @param string $char The character used for building.
* @param string $colour The colour for outputting.
*
* @see dump() Script outputting function.
*/
function dump_a_delimiter($length = DEFAULT_LENGTH, $char = '*', $colour = 'blue')
{
dump(str_repeat($char, $length), $colour);
}
/**
* The check script error exit function.
*
* @see dump_a_delimiter() Ending delimiter.
*/
function dump_an_error()
{
// If web request, add HTML
if (PHP_SAPI !== 'cli') {
echo '</body></html>';
}
dump_a_delimiter();
exit(1);
}
// If web request, add HTML
if (PHP_SAPI !== 'cli') {
echo '<html lang="en"><head><title>Compatibility Check</title><meta charset="UTF-8"></head><body>';
}
// Start the check
dump_a_delimiter();
dump('Starting compatibility check process ...', 'black');
dump_a_delimiter();
// PHP Version Check (5.5-8.3)
if (PHP_VERSION_ID >= 50500 && PHP_VERSION_ID < 80400) {
$versionMessage = IS_X64 ? ' (x64)' : ' (x86)';
$versionMessage = 'You are using a SUPPORTED PHP version: ' . NEW_LINE . NEW_LINE . PHP_VERSION . $versionMessage;
dump($versionMessage);
dump_a_delimiter();
} else {
dump('You are using an UNSUPPORTED PHP version: ' . NEW_LINE . NEW_LINE . PHP_VERSION, 'red');
dump_an_error();
}
// PHP required extensions check
$extensionsList = ['spl', 'hash', 'openssl'];
foreach ($extensionsList as $extensionName) {
if (!extension_loaded($extensionName)) {
dump('You are missing the following required extension: ' . $extensionName, 'red');
dump_an_error();
}
}
unset($extensionName);
// All requirements are accounted for
$versionMessage = 'You have all required extensions: ' . NEW_LINE . NEW_LINE;
$versionMessage .= '- ' . implode(';' . NEW_LINE . '- ', $extensionsList);
$versionMessage .= '.';
dump($versionMessage);
dump_a_delimiter();
// PHP suggested extensions check
dump('Suggestions List:', 'purple');
$none = true;
if (!IS_X64) {
dump('- Migrate to a x64 version of PHP?', 'purple');
$none = false;
}
if ((int)ini_get('precision') < 10) {
dump('- Update your php.ini `precision` to >= 10?', 'purple');
$none = false;
}
if (ini_get('default_charset') !== 'UTF-8') {
dump('- Use UTF-8 as default charset for PHP?', 'purple');
$none = false;
}
if (!extension_loaded('mbstring')) {
dump('- Add or enable the "mbstring" extension?', 'purple');
$none = false;
} elseif (mb_internal_encoding() !== 'UTF-8') {
dump('- Use UTF-8 as internal encoding for "mbstring"?', 'purple');
$none = false;
} elseif (mb_regex_encoding() !== 'UTF-8') {
dump('- Use UTF-8 as regex encoding for "mbstring"?', 'purple');
$none = false;
}
if (!extension_loaded('reflection')) {
dump('- Add or enable the "reflection" extension?', 'purple');
$none = false;
}
if (PHP_VERSION_ID < 70200 && !extension_loaded('libsodium')) {
dump('- Add or enable the "libsodium" extension?', 'purple');
$none = false;
} elseif (PHP_VERSION_ID >= 70200 && !extension_loaded('sodium')) {
dump('- Add or enable the "sodium" extension?', 'purple');
$none = false;
}
if (OPENSSL_VERSION_NUMBER < 268439887 /* >= OpenSSL 1.0.1t 3 May 2016 */) {
// OpenSSL version, PHP 5.5.9 => 268439663, PHP 5.5.38 => 268439887
dump('- Update your OpenSSL library and PHP extension?', 'purple');
$none = false;
}
if (PHP_VERSION_ID >= 70000) {
if (extension_loaded('mcrypt')) {
dump('- Migrate from "mcrypt" to "openssl" or "sodium"!', 'purple');
$none = false;
}
}
if (PHP_VERSION_ID < 70200) {
dump('- Migrate to PHP >= 7.2.0 to use the Camellia in CTR mode!', 'purple');
$none = false;
} elseif (OPENSSL_VERSION_NUMBER < 269484191 /* >= OpenSSL 1.1.0i 14 Aug 2018 */) {
// OpenSSL version, PHP 7.2.10 => 269484191
dump('- Update OpenSSL to use Camellia with CTR mode?', 'purple');
$none = false;
}
if (PHP_VERSION_ID < 70200) {
dump('- Migrate to PHP >= 7.2.0 to use the Argon2i digest!', 'purple');
$none = false;
}
if (PHP_VERSION_ID < 70300) {
dump('- Migrate to PHP >= 7.3.0 to use the Argon2id digest!', 'purple');
$none = false;
}
if (PHP_VERSION_ID < 80000) {
dump('- Migrate to PHP >= 8.0.0 to utilize the new JIT compilation feature!', 'purple');
$none = false;
}
if ($none) {
dump('No suggestions were found!', 'purple');
}
dump_a_delimiter();
// PHP randomness source and system build check
if (PHP_VERSION_ID < 70100) {
$strong = null;
$bytes = openssl_random_pseudo_bytes(8, $strong);
/**
* Check if build is broken or the OpenSSL library has defects.
*
* {@internal Build is broken if function returns empty output or the reference variable is false. }}
*/
if ($strong === false || empty($bytes) || $bytes === str_repeat("\0", 8)/** 1.00/2^64 */) {
dump('Broken system build or randomness source, please upgrade your system!', 'red');
dump_an_error();
}
unset($strong, $bytes);
}
// PHP constants check
$constantsList = [
'PHP_INT_MIN',
'PHP_INT_MAX',
'PASSWORD_BCRYPT',
'PASSWORD_DEFAULT',
'OPENSSL_RAW_DATA',
'OPENSSL_ZERO_PADDING',
'OPENSSL_KEYTYPE_RSA',
'OPENSSL_PKCS1_PADDING',
'OPENSSL_PKCS1_OAEP_PADDING',
'OPENSSL_KEYTYPE_DSA',
'OPENSSL_ALGO_MD5',
'OPENSSL_ALGO_SHA1',
'OPENSSL_ALGO_SHA224',
'OPENSSL_ALGO_SHA256',
'OPENSSL_ALGO_SHA384',
'OPENSSL_ALGO_SHA512'
];
if (PHP_VERSION_ID >= 50600) {
$constantsList = array_merge(
$constantsList,
[
'PASSWORD_BCRYPT_DEFAULT_COST'
]
);
}
if (PHP_VERSION_ID >= 70200) {
$constantsList = array_merge(
$constantsList,
[
'PASSWORD_ARGON2_DEFAULT_MEMORY_COST',
'PASSWORD_ARGON2_DEFAULT_TIME_COST',
'PASSWORD_ARGON2_DEFAULT_THREADS',
'PASSWORD_ARGON2I'
]
);
}
if (PHP_VERSION_ID >= 70300) {
$constantsList = array_merge(
$constantsList,
[
'PASSWORD_ARGON2ID'
]
);
}
if (PHP_VERSION_ID >= 70400) {
$constantsList = array_merge(
$constantsList,
[
'PASSWORD_ARGON2_PROVIDER'
]
);
}
foreach ($constantsList as $constantName) {
if (!defined($constantName)) {
dump('You must define the PHP global constant: "' . $constantName . '"', 'red');
dump_an_error();
}
}
unset($constantName);
// PHP functions check
$functionsList = [
'mt_rand',
'mt_srand',
'mt_getrandmax',
'random_bytes',
'random_int',
'bin2hex',
'hex2bin',
'hash',
'hash_file',
'hash_hmac',
'hash_hmac_file',
'hash_algos',
'hash_hmac_algos',
'hash_hkdf',
'hash_pbkdf2',
'hash_equals',
'password_hash',
'password_verify',
'password_needs_rehash',
'password_algos',
'openssl_random_pseudo_bytes',
'openssl_get_cipher_methods',
'openssl_encrypt',
'openssl_decrypt',
'openssl_free_key',
];
foreach ($functionsList as $functionName) {
if (!function_exists($functionName)) {
dump('Please provide an implementation for the PHP core function: ' . $functionName, 'red');
dump_an_error();
}
}
unset($functionName);
// PHP hashing algorithms check
$hashingAlgorithms = [
'whirlpool',
'md5',
'sha1',
'sha224',
'sha256',
'sha384',
'sha512',
'ripemd128',
'ripemd160',
'ripemd256',
'ripemd320'
];
if (PHP_VERSION_ID >= 70100) {
$hashingAlgorithms = array_merge($hashingAlgorithms, ['sha3-224', 'sha3-256', 'sha3-384', 'sha3-512']);
}
$checkAgainstDigestAlgorithms = [hash_algos(), hash_hmac_algos()];
foreach ($checkAgainstDigestAlgorithms as $supportedAlgorithms) {
foreach ($hashingAlgorithms as $algorithmName) {
if (!in_array($algorithmName, $supportedAlgorithms, true)) {
dump('Please provide an implementation for the digest algorithm: ' . $algorithmName, 'red');
dump_an_error();
}
}
}
unset($supportedAlgorithms, $algorithmName);
// PHP symmetric encryption algorithms check
$supportedAlgorithmsList = openssl_get_cipher_methods();
$encryptionAlgorithms = [
'AES-128-CBC',
'AES-128-CFB',
'AES-128-OFB',
'AES-128-CTR',
'AES-128-ECB',
'AES-192-CBC',
'AES-192-CFB',
'AES-192-OFB',
'AES-192-CTR',
'AES-192-ECB',
'AES-256-CBC',
'AES-256-CFB',
'AES-256-OFB',
'AES-256-CTR',
'AES-256-ECB',
'CAMELLIA-128-CBC',
'CAMELLIA-128-CFB',
'CAMELLIA-128-OFB',
'CAMELLIA-128-ECB',
'CAMELLIA-192-CBC',
'CAMELLIA-192-CFB',
'CAMELLIA-192-OFB',
'CAMELLIA-192-ECB',
'CAMELLIA-256-CBC',
'CAMELLIA-256-CFB',
'CAMELLIA-256-OFB',
'CAMELLIA-256-ECB',
'DES-EDE3-CBC',
'DES-EDE3-CFB',
'DES-EDE3-OFB',
];
if (PHP_VERSION_ID >= 70200 && OPENSSL_VERSION_NUMBER > 269484191) {
$encryptionAlgorithms = array_merge(
$encryptionAlgorithms,
[
'CAMELLIA-128-CTR',
'CAMELLIA-192-CTR',
'CAMELLIA-256-CTR',
]
);
}
// Common OpenSSL compilation bug (dependent on local machine while building PHP)
if (in_array(strtolower('DES-EDE3'), openssl_get_cipher_methods(), true)) {
$encryptionAlgorithms [] = 'DES-EDE3';
} else {
$encryptionAlgorithms [] = 'DES-EDE3-ECB';
}
// The algorithm is marked as deprecated in OpenSSL and may be removed later or not accessible under certain builds
if (PHP_VERSION_ID < 80000 || OPENSSL_VERSION_NUMBER <= 269488207) {
$encryptionAlgorithms = array_merge($encryptionAlgorithms, ['RC4']);
}
foreach ($encryptionAlgorithms as $algorithmName) {
if (!in_array(strtolower($algorithmName), $supportedAlgorithmsList, true)) {
dump('Please provide an implementation for the encryption algorithm: ' . $algorithmName, 'red');
dump_an_error();
}
}
unset($algorithmName);
// PHP password digestion algorithms check
$supportedPasswordAlgorithms = password_algos();
if (PHP_VERSION_ID < 70400) {
$passwordAlgorithms = [
1, // `BCRYPT`
];
if (PHP_VERSION_ID >= 70200) {
$passwordAlgorithms[] = 2; // PASSWORD_ARGON2I
}
if (PHP_VERSION_ID >= 70300) {
$passwordAlgorithms[] = 3; // PASSWORD_ARGON2ID
}
} else {
// PHP_VERSION_ID >= 70400
$passwordAlgorithms = [
'2y', // `BCRYPT`
'argon2i', // `PASSWORD_ARGON2I`
'argon2id', // `PASSWORD_ARGON2ID`
];
}
foreach ($passwordAlgorithms as $algorithmName) {
if (!in_array($algorithmName, $supportedPasswordAlgorithms, true)) {
dump('Please provide an implementation for the password digestion algorithm: ' . $algorithmName, 'red');
dump_an_error();
}
}
unset($algorithmName);
// PHP asymmetric encryption/signature algorithms check
$encryptionAlgorithms = [
OPENSSL_KEYTYPE_RSA, // RSA
OPENSSL_KEYTYPE_DSA, // DSA
OPENSSL_KEYTYPE_DH, // DH
];
foreach ($encryptionAlgorithms as $algorithmName) {
$opensslResource = openssl_pkey_new(
[
'private_key_bits' => $algorithmName === OPENSSL_KEYTYPE_DSA ? 1024 : 512, // Size of the key (the minimum)
'private_key_type' => $algorithmName
]
);
if ($opensslResource === false) {
dump(
'Please setup your OpenSSL library correctly by pointing ' .
'the environment variable `OPENSSL_CONF` to the location of ' .
'the `openssl.cnf` configuration file.',
'red'
);
dump('List of raw OpenSSL errors:', 'red');
$count = 0;
while ($error = openssl_error_string()) {
dump($error, 'red');
$count++;
}
if ($count === 0) {
dump('No raw errors were returned from OpenSSL.', 'red');
}
dump_an_error();
}
/**
* Check if build is broken or the OpenSSL library has defects.
*
* {@internal Build is broken if function returns empty output or the reference variable is false. }}
*/
@openssl_free_key($opensslResource);
$opensslResource = null;
unset($opensslResource);
}
unset($encryptionAlgorithms);
// Output success!
dump('PHP is ready for the CryptoManana Framework!');
dump_a_delimiter();
// If web request, add HTML
if (PHP_SAPI !== 'cli') {
echo '</body></html>';
} else {
exit(0); // Exit with success
}