Matthias Andreas Benkard | 7b2a3a1 | 2021-08-16 10:57:25 +0200 | [diff] [blame^] | 1 | <?php namespace LeeSherwood\Ejabberd\CommandExecutors;
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| 2 |
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| 3 | /**
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| 4 | * Dummy command executor for ejabberd
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| 5 | *
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| 6 | * This class implements the command executor interface and just returns some sane boolean values.
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| 7 | * You may want to use this class to test your ejabberd external authentication module is set up correctly
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| 8 | * before you start creating your custom code.
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| 9 | *
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| 10 | * @package LeeSherwood\Ejabberd
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| 11 | * @author Lee Sherwood
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| 12 | */
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| 13 |
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| 14 | use \PDO;
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| 15 |
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| 16 | class mailcowCommandExecutor implements CommandExecutorInterface {
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| 17 |
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| 18 | /**
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| 19 | * Authenticate a user (login)
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| 20 | *
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| 21 | * @param string $username
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| 22 | * @param string $servername
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| 23 | * @param string $password
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| 24 | *
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| 25 | * @return bool
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| 26 | */
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| 27 |
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| 28 | public static function verify_salted_hash($hash, $password, $algo, $salt_length) {
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| 29 | // Decode hash
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| 30 | $dhash = base64_decode($hash);
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| 31 | // Get first n bytes of binary which equals a SSHA hash
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| 32 | $ohash = substr($dhash, 0, $salt_length);
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| 33 | // Remove SSHA hash from decoded hash to get original salt string
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| 34 | $osalt = str_replace($ohash, '', $dhash);
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| 35 | // Check single salted SSHA hash against extracted hash
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| 36 | if (hash_equals(hash($algo, $password . $osalt, true), $ohash)) {
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| 37 | return true;
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| 38 | }
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| 39 | return false;
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| 40 | }
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| 41 |
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| 42 | public static function verify_hash($hash, $password) {
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| 43 | if (preg_match('/^{(.+)}(.+)/i', $hash, $hash_array)) {
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| 44 | $scheme = strtoupper($hash_array[1]);
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| 45 | $hash = $hash_array[2];
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| 46 | switch ($scheme) {
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| 47 | case "ARGON2I":
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| 48 | case "ARGON2ID":
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| 49 | case "BLF-CRYPT":
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| 50 | case "CRYPT":
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| 51 | case "DES-CRYPT":
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| 52 | case "MD5-CRYPT":
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| 53 | case "MD5":
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| 54 | case "SHA256-CRYPT":
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| 55 | case "SHA512-CRYPT":
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| 56 | return password_verify($password, $hash);
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| 57 |
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| 58 | case "CLEAR":
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| 59 | case "CLEARTEXT":
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| 60 | case "PLAIN":
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| 61 | return $password == $hash;
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| 62 |
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| 63 | case "LDAP-MD5":
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| 64 | $hash = base64_decode($hash);
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| 65 | return hash_equals(hash('md5', $password, true), $hash);
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| 66 |
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| 67 | case "PBKDF2":
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| 68 | $components = explode('$', $hash);
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| 69 | $salt = $components[2];
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| 70 | $rounds = $components[3];
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| 71 | $hash = $components[4];
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| 72 | return hash_equals(hash_pbkdf2('sha1', $password, $salt, $rounds), $hash);
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| 73 |
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| 74 | case "PLAIN-MD4":
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| 75 | return hash_equals(hash('md4', $password), $hash);
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| 76 |
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| 77 | case "PLAIN-MD5":
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| 78 | return md5($password) == $hash;
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| 79 |
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| 80 | case "PLAIN-TRUNC":
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| 81 | $components = explode('-', $hash);
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| 82 | if (count($components) > 1) {
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| 83 | $trunc_len = $components[0];
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| 84 | $trunc_password = $components[1];
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| 85 |
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| 86 | return substr($password, 0, $trunc_len) == $trunc_password;
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| 87 | } else {
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| 88 | return $password == $hash;
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| 89 | }
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| 90 |
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| 91 | case "SHA":
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| 92 | case "SHA1":
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| 93 | case "SHA256":
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| 94 | case "SHA512":
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| 95 | // SHA is an alias for SHA1
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| 96 | $scheme = $scheme == "SHA" ? "sha1" : strtolower($scheme);
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| 97 | $hash = base64_decode($hash);
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| 98 | return hash_equals(hash($scheme, $password, true), $hash);
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| 99 |
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| 100 | case "SMD5":
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| 101 | return self::verify_salted_hash($hash, $password, 'md5', 16);
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| 102 |
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| 103 | case "SSHA":
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| 104 | return self::verify_salted_hash($hash, $password, 'sha1', 20);
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| 105 |
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| 106 | case "SSHA256":
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| 107 | return self::verify_salted_hash($hash, $password, 'sha256', 32);
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| 108 |
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| 109 | case "SSHA512":
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| 110 | return self::verify_salted_hash($hash, $password, 'sha512', 64);
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| 111 |
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| 112 | default:
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| 113 | return false;
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| 114 | }
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| 115 | }
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| 116 | return false;
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| 117 | }
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| 118 |
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| 119 | public function authenticate($username, $servername, $password)
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| 120 | {
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| 121 | $database_type = 'mysql';
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| 122 | $database_sock = '/var/run/mysqld/mysqld.sock';
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| 123 | $database_user = '__DBUSER__';
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| 124 | $database_pass = '__DBPASS__';
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| 125 | $database_name = '__DBNAME__';
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| 126 |
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| 127 | $dsn = $database_type . ":unix_socket=" . $database_sock . ";dbname=" . $database_name;
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| 128 | $opt = [
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| 129 | PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
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| 130 | PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
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| 131 | PDO::ATTR_EMULATE_PREPARES => false
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| 132 | ];
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| 133 | try {
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| 134 | $pdo = new PDO($dsn, $database_user, $database_pass, $opt);
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| 135 | }
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| 136 | catch (PDOException $e) {
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| 137 | return false;
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| 138 | }
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| 139 | if (!filter_var($username, FILTER_VALIDATE_EMAIL) && !ctype_alnum(str_replace(array('_', '.', '-'), '', $username))) {
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| 140 | return false;
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| 141 | }
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| 142 | $username = strtolower(trim($username));
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| 143 | $stmt = $pdo->prepare("SELECT `password` FROM `mailbox`
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| 144 | INNER JOIN domain on mailbox.domain = domain.domain
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| 145 | WHERE `kind` NOT REGEXP 'location|thing|group'
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| 146 | AND `mailbox`.`active`= '1'
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| 147 | AND `domain`.`active`= '1'
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| 148 | AND `domain`.`xmpp` = '1'
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| 149 | AND JSON_UNQUOTE(JSON_VALUE(`mailbox`.`attributes`, '$.xmpp_access')) = '1'
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| 150 | AND CONCAT(`domain`.`xmpp_prefix`, '.', `domain`.`domain`) = :servername
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| 151 | AND `username` = CONCAT(:local_part, '@', `domain`.`domain`)");
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| 152 | $stmt->execute(array(':local_part' => $username, ':servername' => $servername));
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| 153 | $rows = $stmt->fetchAll(PDO::FETCH_ASSOC);
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| 154 | foreach ($rows as $row) {
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| 155 | if (self::verify_hash($row['password'], $password) !== false) {
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| 156 | return true;
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| 157 | }
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| 158 | }
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| 159 | return false;
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| 160 | }
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| 161 |
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| 162 | /**
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| 163 | * Check if a user exists
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| 164 | *
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| 165 | * @param string $username
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| 166 | * @param string $servername
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| 167 | *
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| 168 | * @return bool
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| 169 | */
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| 170 | public function userExists($username, $servername)
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| 171 | {
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| 172 | return true;
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| 173 | }
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| 174 |
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| 175 | /**
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| 176 | * Set a password for a user
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| 177 | *
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| 178 | * @param string $username
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| 179 | * @param string $servername
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| 180 | * @param string $password
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| 181 | *
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| 182 | * @return bool
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| 183 | */
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| 184 | public function setPassword($username, $servername, $password)
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| 185 | {
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| 186 | return false;
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| 187 | }
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| 188 |
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| 189 | /**
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| 190 | * Register a user
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| 191 | *
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| 192 | * @param string $username
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| 193 | * @param string $servername
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| 194 | * @param string $password
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| 195 | *
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| 196 | * @return bool
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| 197 | */
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| 198 | public function register($username, $servername, $password)
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| 199 | {
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| 200 | return false;
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| 201 | }
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| 202 |
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| 203 | /**
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| 204 | * Delete a user
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| 205 | *
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| 206 | * @param string $username
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| 207 | * @param string $servername
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| 208 | *
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| 209 | * @return bool
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| 210 | */
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| 211 | public function removeUser($username, $servername)
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| 212 | {
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| 213 | return false;
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| 214 | }
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| 215 |
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| 216 | /**
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| 217 | * Delete a user with password validation
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| 218 | *
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| 219 | * @param string $username
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| 220 | * @param string $servername
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| 221 | * @param string $password
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| 222 | *
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| 223 | * @return bool
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| 224 | */
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| 225 | public function removeUserWithPassword($username, $servername, $password)
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| 226 | {
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| 227 | return false;
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| 228 | }
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| 229 | } |