MySQL::escapeChar() - Code Metrics - Inspection of "Refactor `Dshafik\MySQL::escapeString()`" - dshafik/php7-mysql-shim - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 525147...9116bd )

by Davey

created 2016-02-05 09:29 UTC

MySQL::escapeChar() C

↳ Parent: MySQL

Complexity

Conditions	8
Paths	8

Size

Total Lines	27
Code Lines	23

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	16
CRAP Score	8.8638

Metric	Value
dl	0
loc	27
ccs	16
cts	21
cp	0.7619
rs	5.3846
cc	8
eloc	23
nc	8
nop	1
crap	8.8638

<?php
namespace {

    if (!function_exists('\mysql_connect')) {
        define ('MYSQL_ASSOC', 1);
        define ('MYSQL_NUM', 2);
        define ('MYSQL_BOTH', 3);
        define ('MYSQL_CLIENT_COMPRESS', 32);
        define ('MYSQL_CLIENT_SSL', 2048);
        define ('MYSQL_CLIENT_INTERACTIVE', 1024);
        define ('MYSQL_CLIENT_IGNORE_SPACE', 256);

        function mysql_connect(
            $hostname = null,
            $username = null,
            $password = null,
            $new = false,
            $flags = 0
        ) {
            if ($new !== false) {
                trigger_error('Argument $new is no longer supported in PHP > 7', E_USER_WARNING);
            }
            if (null === $hostname) {
                $hostname = ini_get('mysqli.default_host') ?: null;
            }
            if (null === $username) {
                $username = ini_get('mysqli.default_user') ?: null;
            }
            if (null === $password) {
                $password = ini_get('mysqli.default_pw') ?: null;
            }

            $hash = sha1($hostname . $username . $flags);
            if ($hostname{1} != ':' && isset(\Dshafik\MySQL::$connections[$hash])) {
                \Dshafik\MySQL::$last_connection = \Dshafik\MySQL::$connections[$hash]['conn'];
                \Dshafik\MySQL::$connections[$hash]['refcount'] += 1;
                return \Dshafik\MySQL::$connections[$hash]['conn'];
            }

            if ($flags === 0) {
                \Dshafik\MySQL::$last_connection = $conn = mysqli_connect($hostname, $username, $password);
                $conn->hash = $hash;
                \Dshafik\MySQL::$connections[$hash] = ['refcount' => 1, 'conn' => $conn];

                return $conn;
            }

            try {
                \Dshafik\MySQL::$last_connection = $conn = mysqli_init();

                mysqli_real_connect(
                    $conn,
                    $hostname,
                    $username,
                    $password,
                    '',
                    null,
                    '',
                    $flags
                );

                // @codeCoverageIgnoreStart
                // PHPUnit turns the warning from mysqli_real_connect into an exception, so this never runs
                if ($conn === false) {
                    return false;
                }
                // @codeCoverageIgnoreEnd

                $conn->hash = $hash;
                \Dshafik\MySQL::$connections[$hash] = ['refcount' => 1, 'conn' => $conn];

                return $conn;
            } catch (\Throwable $e) {
                trigger_error($e->getMessage(), E_USER_WARNING);
                // @codeCoverageIgnoreStart
                // PHPUnit turns the warning into an exception, so this never runs
                return false;
                // @codeCoverageIgnoreEnd
            }
        }

        function mysql_pconnect(
            $hostname = null,
            $username = null,
            $password = null,
            $flags = 0
        ) {
            $hostname = 'p:' . $hostname;
            return mysql_connect($hostname, $username, $password, false, $flags);
        }

        function mysql_close(\mysqli $link = null)
        {
            $isDefault = ($link === null);

            $link = \Dshafik\MySQL::getConnection($link, __FUNCTION__);
            if ($link === null) {
                // @codeCoverageIgnoreStart
                // PHPUnit Warning -> Exception
                return false;
                // @codeCoverageIgnoreEnd
            }

            if (isset(\Dshafik\MySQL::$connections[$link->hash])) {
                \Dshafik\MySQL::$connections[$link->hash]['refcount'] -= 1;
            }

            $return = true;
            if (\Dshafik\MySQL::$connections[$link->hash]['refcount'] == 0) {
                $return = mysqli_close($link);
                unset(\Dshafik\MySQL::$connections[$link->hash]);
            }

            if ($isDefault) {
                Dshafik\MySQL::$last_connection = null;
            }

            return $return;
        }

        function mysql_select_db($databaseName, \mysqli $link = null)
        {
            $link = \Dshafik\MySQL::getConnection($link);

            return mysqli_query(
                $link,
                "USE " . mysqli_real_escape_string($link, $databaseName)
            ) !== false;
        }

        function mysql_query($query, \mysqli $link = null)
        {
            return mysqli_query(\Dshafik\MySQL::getConnection($link), $query);
        }

        function mysql_unbuffered_query($query, \mysqli $link = null)
        {
            $link = \Dshafik\MySQL::getConnection($link);
            if (mysqli_real_query($link, $query)) {
                return mysqli_use_result($link);
            }

            return false;
        }

        function mysql_db_query($databaseName, $query, \mysqli $link = null)
        {
            if (mysql_select_db($databaseName, $link)) {
                return mysql_query($query, $link);
            }
            return false;
        }

        function mysql_list_dbs(\mysqli $link = null)
        {
            return mysql_query("SHOW DATABASES", $link);
        }

        function mysql_list_tables($databaseName, \mysqli $link = null)
        {
            $link = \Dshafik\MySQL::getConnection($link);
            return mysql_query("SHOW TABLES FROM " . mysql_real_escape_string($databaseName, $link), $link);
        }

        function mysql_list_fields($databaseName, $tableName, \mysqli $link = null)
        {
            $link = \Dshafik\MySQL::getConnection($link);
            $result = mysql_query(
                "SHOW COLUMNS FROM " .
                mysqli_real_escape_string($link, $databaseName) . "." .
                mysqli_real_escape_string($link, $tableName),
                $link
            );

            if ($result instanceof \mysqli_result) {
                $result->table = $tableName;
                return $result;
            }

            trigger_error("mysql_list_fields(): Unable to save MySQL query result", E_USER_WARNING);
            // @codeCoverageIgnoreStart
            return false;
            // @codeCoverageIgnoreEnd
        }

        function mysql_list_processes(\mysqli $link = null)
        {
            return mysql_query("SHOW PROCESSLIST", $link);
        }

        function mysql_error(\mysqli $link = null)
        {
            return mysqli_error(\Dshafik\MySQL::getConnection($link));
        }

        function mysql_errno(\mysqli $link = null)
        {
            return mysqli_errno(\Dshafik\MySQL::getConnection($link));
        }

        function mysql_affected_rows(\mysqli $link = null)
        {
            return mysqli_affected_rows(\Dshafik\MySQL::getConnection($link));
        }

        function mysql_insert_id($link = null) /*|*/
        {
            return mysqli_insert_id(\Dshafik\MySQL::getConnection($link));
        }

        function mysql_result($result, $row, $field = 0)
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }

            if (!mysqli_data_seek($result, $row)) {
                trigger_error(
                    sprintf(
                        "mysql_result(): Unable to jump to row %d on MySQL result index %s",
                        $row,
                        spl_object_hash($result)
                    ),
                    E_USER_WARNING
                );
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }

            $found = true;
            if (strpos($field, ".") !== false) {
                list($table, $name) =  explode(".", $field);
                $i = 0;
                $found = false;
                while ($column = mysqli_fetch_field($result)) {
                    if ($column->table == $table && $column->name == $name) {
                        $field = $i;
                        $found = true;
                        break;
                    }
                    $i++;
                }
            }

            $row = mysql_fetch_array($result);
            if ($found && isset($row[$field])) {
                return $row[$field];
            }

            trigger_error(
                sprintf(
                    "%s(): %s not found in MySQL result index %s",
                    __FUNCTION__,
                    $field,
                    spl_object_hash($result)
                ),
                E_USER_WARNING
            );
            // @codeCoverageIgnoreStart
            return false;
            // @codeCoverageIgnoreEnd
        }

        function mysql_num_rows($result)
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }

            $previous = error_reporting(0);
            $rows = mysqli_num_rows($result);
            error_reporting($previous);

            return $rows;
        }

        function mysql_num_fields($result)
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }
            return mysqli_num_fields($result);
        }

        function mysql_fetch_row($result)
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }
            return mysqli_fetch_row($result) ?: false;
        }

        function mysql_fetch_array($result)
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }
            return mysqli_fetch_array($result) ?: false;
        }

        function mysql_fetch_assoc($result) /* : array|null */
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }

            return mysqli_fetch_assoc($result) ?: false;
        }

        function mysql_fetch_object($result, $class = null, array $params = []) /* : object|null */
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }

            if ($class == null) {
                $object = mysqli_fetch_object($result);
            } else {
                $object = mysqli_fetch_object($result, $class, $params);
            }

            return $object ?: false;
        }

        function mysql_data_seek($result, $offset)
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }
            return mysqli_data_seek($result, $offset);
        }

        function mysql_fetch_lengths($result) /* : array|*/
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }
            return mysqli_fetch_lengths($result);
        }

        function mysql_fetch_field($result) /* : object|*/
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }
            return mysqli_fetch_field($result);
        }

        function mysql_field_seek($result, $field)
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }
            return mysqli_field_seek($result, $field);
        }

        function mysql_free_result($result)
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }
            return mysqli_free_result($result);
        }

        function mysql_field_name($result, $field)
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }
            return \Dshafik\MySQL::mysqlFieldInfo($result, $field, 'name');
        }

        function mysql_field_table($result, $field)
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }
            return \Dshafik\MySQL::mysqlFieldInfo($result, $field, 'table');
        }

        function mysql_field_len($result, $field)
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }
            return \Dshafik\MySQL::mysqlFieldInfo($result, $field, 'len');
        }

        function mysql_field_type($result, $field)
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }
            return \Dshafik\MySQL::mysqlFieldInfo($result, $field, 'type');
        }

        function mysql_field_flags($result, $field)
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }
            return \Dshafik\MySQL::mysqlFieldInfo($result, $field, 'flags');
        }

        function mysql_escape_string($unescapedString)
        {
            if (\Dshafik\MySQL::$last_connection == null) {
                trigger_error(
                    sprintf(
                        "%s() is insecure; use mysql_real_escape_string() instead!",
                        __FUNCTION__
                    ),
                    E_USER_NOTICE
                );

                return \Dshafik\MySQL::escapeString($unescapedString);
            }
            return mysql_real_escape_string($unescapedString, null);
        }

        function mysql_real_escape_string($unescapedString, \mysqli $link = null)
        {
            return mysqli_escape_string(\Dshafik\MySQL::getConnection($link), $unescapedString);
        }

        function mysql_stat(\mysqli $link = null)
        {
            return mysqli_stat(\Dshafik\MySQL::getConnection($link));
        }

        function mysql_thread_id(\mysqli $link = null)
        {
            return mysqli_thread_id(\Dshafik\MySQL::getConnection($link));
        }

        function mysql_client_encoding(\mysqli $link = null)
        {
            return mysqli_character_set_name(\Dshafik\MySQL::getConnection($link));
        }

        function mysql_ping(\mysqli $link = null)
        {
            return mysqli_ping($link);
        }

        function mysql_get_client_info(\mysqli $link = null)
        {
            return mysqli_get_client_info(\Dshafik\MySQL::getConnection($link));
        }

        function mysql_get_host_info(\mysqli $link = null)
        {
            return mysqli_get_host_info(\Dshafik\MySQL::getConnection($link));
        }

        function mysql_get_proto_info(\mysqli $link = null)
        {
            return mysqli_get_proto_info(\Dshafik\MySQL::getConnection($link));
        }

        function mysql_get_server_info(\mysqli $link = null)
        {
            return mysqli_get_server_info(\Dshafik\MySQL::getConnection($link));
        }

        function mysql_info(\mysqli $link = null)
        {
            return mysqli_info(\Dshafik\MySQL::getConnection($link));
        }

        function mysql_set_charset($charset, \mysqli $link = null)
        {
            return mysqli_set_charset(\Dshafik\MySQL::getConnection($link), $charset);
        }

        function mysql_db_name($result, $row)
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }

            // Alias as per http://lxr.php.net/xref/PHP_5_6/ext/mysql/php_mysql.c#319
            return mysql_result($result, $row, 'Database');
        }

        function mysql_tablename($result, $row)
        {
            if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
                // @codeCoverageIgnoreStart
                return false;
                // @codeCoverageIgnoreEnd
            }

            // Alias as per http://lxr.php.net/xref/PHP_5_6/ext/mysql/php_mysql.c#321
            return mysql_result($result, $row, 'Table');
        }

        /* Aliases */

        function mysql_fieldname(... $args)
        {
            return mysql_field_name(... $args);
        }

        function mysql_fieldtable(... $args)
        {
            return mysql_field_table(... $args);
        }

        function mysql_fieldlen(... $args)
        {
            return mysql_field_len(... $args);
        }

        function mysql_fieldtype(... $args)
        {
            return mysql_field_type(... $args);
        }

        function mysql_fieldflags(... $args)
        {
            return mysql_field_flags(... $args);
        }

        function mysql_selectdb(... $args)
        {
            return mysql_select_db(... $args);
        }

        function mysql_freeresult(... $args)
        {
            return mysql_free_result(... $args);
        }

        function mysql_numfields(... $args)
        {
            return mysql_num_fields(... $args);
        }

        function mysql_numrows(... $args)
        {
            return mysql_num_rows(... $args);
        }

        function mysql_listdbs(... $args)
        {
            return mysql_list_dbs(... $args);
        }

        function mysql_listtables(... $args)
        {
            return mysql_list_tables(... $args);
        }

        function mysql_listfields(... $args)
        {
            return mysql_list_fields(... $args);
        }

        function mysql_dbname(... $args)
        {
            return mysql_db_name(... $args);
        }

        function mysql_table_name(... $args)
        {
            return mysql_tablename(... $args);
        }
    }
}

namespace Dshafik {

    class MySQL
    {
        public static $last_connection = null;
        public static $connections = [];

        public static function getConnection($link = null, $func = null)
        {
            if ($link !== null) {
                return $link;
            }

            if (static::$last_connection === null) {
                $err = "A link to the server could not be established";
                if ($func !== null) {
                    $err = $func . "(): no MySQL-Link resource supplied";
                }
                trigger_error($err, E_USER_WARNING);
                return false;
            }

            return static::$last_connection;
        }

        public static function mysqlFieldInfo(\mysqli_result $result, $field, $what)
        {
            try {
                $field = mysqli_fetch_field_direct($result, $field);
            } catch (\Exception $e) {
                trigger_error(
                    sprintf(
                        "mysql_field_%s(): Field %d is invalid for MySQL result index %s",
                        $what,
                        $field,
                        spl_object_hash($result)
                    ),
                    E_USER_WARNING
                );
                // @codeCoverageIgnoreStart
                // PHPUnit turns the warning into an exception, so this never runs
                return false;
                // @codeCoverageIgnoreEnd
            }

            if ($what == 'name' || $what == 'table') {
                return $field->{$what};
            }

            if ($what == 'len') {
                return $field->length;
            }

            if ($what == 'type') {
                return static::getFieldType($field->type);
            }

            if ($what == 'flags') {
                return static::getFieldFlags($field->flags);
            }

            return false;
        }

        public static function checkValidResult($result, $function)
        {
            if (!($result instanceof \mysqli_result)) {
                if ($function != "mysql_fetch_object") {
                    trigger_error(
                        $function . "() expects parameter 1 to be resource, " . strtolower(gettype($result)) . " given",
                        E_USER_WARNING
                    );
                }

                if ($function == "mysql_fetch_object") {
                    trigger_error(
                        $function . "(): supplied argument is not a valid MySQL result resource",
                        E_USER_WARNING
                    );
                }
                return false;
            }

        }

        public static function escapeString($unescapedString)
        {
            $escapedString = "";
            for ($i = 0; $i < strlen($unescapedString); $i++) {
                $escapedString .= self::escapeChar($unescapedString{$i});
            }

            return $escapedString;
        }

        protected static function getFieldFlags($what)
        {
            // Order of flags taken from http://lxr.php.net/xref/PHP_5_6/ext/mysql/php_mysql.c#2507
            $flags = [
                MYSQLI_NOT_NULL_FLAG => "not_null",
                MYSQLI_PRI_KEY_FLAG => "primary_key",
                MYSQLI_UNIQUE_KEY_FLAG => "unique_key",
                MYSQLI_MULTIPLE_KEY_FLAG => "multiple_key",
                MYSQLI_BLOB_FLAG => "blob",
                MYSQLI_UNSIGNED_FLAG => "unsigned",
                MYSQLI_ZEROFILL_FLAG => "zerofill",
                MYSQLI_BINARY_FLAG => "binary",
                MYSQLI_ENUM_FLAG => "enum",
                MYSQLI_SET_FLAG => "set",
                MYSQLI_AUTO_INCREMENT_FLAG => "auto_increment",
                MYSQLI_TIMESTAMP_FLAG => "timestamp",
            ];

            $fieldFlags = [];
            foreach ($flags as $flag => $value) {
                if ($what & $flag) {
                    $fieldFlags[] = $value;
                }
            }

            return implode(" ", $fieldFlags);
        }

        protected static function getFieldType($what)
        {
            $types = [
                MYSQLI_TYPE_STRING => 'string',
                MYSQLI_TYPE_VAR_STRING => 'string',
                MYSQLI_TYPE_ENUM => 'string',
                MYSQLI_TYPE_SET => 'string',

                MYSQLI_TYPE_LONG => 'int',
                MYSQLI_TYPE_TINY => 'int',
                MYSQLI_TYPE_SHORT => 'int',
                MYSQLI_TYPE_INT24 => 'int',
                MYSQLI_TYPE_CHAR => 'int',
                MYSQLI_TYPE_LONGLONG => 'int',

                MYSQLI_TYPE_DECIMAL => 'real',
                MYSQLI_TYPE_FLOAT => 'real',
                MYSQLI_TYPE_DOUBLE => 'real',
                MYSQLI_TYPE_NEWDECIMAL => 'real',

                MYSQLI_TYPE_TINY_BLOB => 'blob',
                MYSQLI_TYPE_MEDIUM_BLOB => 'blob',
                MYSQLI_TYPE_LONG_BLOB => 'blob',
                MYSQLI_TYPE_BLOB => 'blob',

                MYSQLI_TYPE_NEWDATE => 'date',
                MYSQLI_TYPE_DATE => 'date',
                MYSQLI_TYPE_TIME => 'time',
                MYSQLI_TYPE_YEAR => 'year',
                MYSQLI_TYPE_DATETIME => 'datetime',
                MYSQLI_TYPE_TIMESTAMP => 'timestamp',

                MYSQLI_TYPE_NULL => 'null',

                MYSQLI_TYPE_GEOMETRY => 'geometry',
            ];

            return isset($types[$what]) ? $types[$what] : "unknown";
        }

        protected static function escapeChar($char)
        {
            switch ($char) {
                case "\0":
                    $esc = "\\0";
                    break;
                case "\n":
                    $esc = "\\n";
                    break;
                case "\r":
                    $esc = "\\r";
                    break;
                case '\\':
                case '\'':
                case '"':
                    $esc = "\\{$char}";
                    break;
                case "\032":
                    $esc = "\\Z";
                    break;
                default:
                    $esc = $char;
                    break;
            }
            
            return $esc;
        }
    }
}


1		<?php
2		namespace {
3
4		if (!function_exists('\mysql_connect')) {
5		define ('MYSQL_ASSOC', 1);
6		define ('MYSQL_NUM', 2);
7		define ('MYSQL_BOTH', 3);
8		define ('MYSQL_CLIENT_COMPRESS', 32);
9		define ('MYSQL_CLIENT_SSL', 2048);
10		define ('MYSQL_CLIENT_INTERACTIVE', 1024);
11		define ('MYSQL_CLIENT_IGNORE_SPACE', 256);
12
13		function mysql_connect(
14		$hostname = null,
15		$username = null,
16		$password = null,
17		$new = false,
18		$flags = 0
19		) {
20	51	if ($new !== false) {
21	1	trigger_error('Argument $new is no longer supported in PHP > 7', E_USER_WARNING);
22		}
23	50	if (null === $hostname) {
24	1	$hostname = ini_get('mysqli.default_host') ?: null;
25		}
26	50	if (null === $username) {
27	1	$username = ini_get('mysqli.default_user') ?: null;
28		}
29	50	if (null === $password) {
30	48	$password = ini_get('mysqli.default_pw') ?: null;
31		}
32
33	50	$hash = sha1($hostname . $username . $flags);
34	50	if ($hostname{1} != ':' && isset(\Dshafik\MySQL::$connections[$hash])) {
35	10	\Dshafik\MySQL::$last_connection = \Dshafik\MySQL::$connections[$hash]['conn'];
36	10	\Dshafik\MySQL::$connections[$hash]['refcount'] += 1;
37	10	return \Dshafik\MySQL::$connections[$hash]['conn'];
38		}
39
40	41	if ($flags === 0) {
41	39	\Dshafik\MySQL::$last_connection = $conn = mysqli_connect($hostname, $username, $password);
42	38	$conn->hash = $hash;
43	38	\Dshafik\MySQL::$connections[$hash] = ['refcount' => 1, 'conn' => $conn];
44
45	38	return $conn;
46		}
47
48		try {
49	2	\Dshafik\MySQL::$last_connection = $conn = mysqli_init();
50
51	2	mysqli_real_connect(
52		$conn,
53		$hostname,
54		$username,
55		$password,
56	2	'',
57	2	null,
58	2	'',
59		$flags
60		);
61
62		// @codeCoverageIgnoreStart
63		// PHPUnit turns the warning from mysqli_real_connect into an exception, so this never runs
64		if ($conn === false) {
65		return false;
66		}
67		// @codeCoverageIgnoreEnd
68
69	1	$conn->hash = $hash;
70	1	\Dshafik\MySQL::$connections[$hash] = ['refcount' => 1, 'conn' => $conn];
71
72	1	return $conn;
73	1	} catch (\Throwable $e) {
74	1	trigger_error($e->getMessage(), E_USER_WARNING);
75		// @codeCoverageIgnoreStart
76		// PHPUnit turns the warning into an exception, so this never runs
77		return false;
78		// @codeCoverageIgnoreEnd
79		}
80		}
81
82		function mysql_pconnect(
83		$hostname = null,
84		$username = null,
85		$password = null,
86		$flags = 0
87		) {
88	1	$hostname = 'p:' . $hostname;
89	1	return mysql_connect($hostname, $username, $password, false, $flags);
90		}
91
92		function mysql_close(\mysqli $link = null)
93		{
94	74	$isDefault = ($link === null);
95
96	74	$link = \Dshafik\MySQL::getConnection($link, __FUNCTION__);
97	74	if ($link === null) {
98		// @codeCoverageIgnoreStart
99		// PHPUnit Warning -> Exception
100		return false;
101		// @codeCoverageIgnoreEnd
102		}
103
104	74	if (isset(\Dshafik\MySQL::$connections[$link->hash])) {
105	48	\Dshafik\MySQL::$connections[$link->hash]['refcount'] -= 1;
106		}
107
108	74	$return = true;
109	74	if (\Dshafik\MySQL::$connections[$link->hash]['refcount'] == 0) {
110	65	$return = mysqli_close($link);
111	65	unset(\Dshafik\MySQL::$connections[$link->hash]);
112		}
113
114	74	if ($isDefault) {
115	74	Dshafik\MySQL::$last_connection = null;
116		}
117
118	74	return $return;
119		}
120
121		function mysql_select_db($databaseName, \mysqli $link = null)
122		{
123	41	$link = \Dshafik\MySQL::getConnection($link);
124
125	41	return mysqli_query(
126		$link,
127	41	"USE " . mysqli_real_escape_string($link, $databaseName)
128	41	) !== false;
129		}
130
131		function mysql_query($query, \mysqli $link = null)
132		{
133	44	return mysqli_query(\Dshafik\MySQL::getConnection($link), $query);
134		}
135
136		function mysql_unbuffered_query($query, \mysqli $link = null)
137		{
138	4	$link = \Dshafik\MySQL::getConnection($link);
139	4	if (mysqli_real_query($link, $query)) {
140	3	return mysqli_use_result($link);
141		}
142
143	1	return false;
144		}
145
146		function mysql_db_query($databaseName, $query, \mysqli $link = null)
147		{
148	2	if (mysql_select_db($databaseName, $link)) {
149	1	return mysql_query($query, $link);
150		}
151	1	return false;
152		}
153
154		function mysql_list_dbs(\mysqli $link = null)
155		{
156	1	return mysql_query("SHOW DATABASES", $link);
157		}
158
159		function mysql_list_tables($databaseName, \mysqli $link = null)
160		{
161	2	$link = \Dshafik\MySQL::getConnection($link);
162	2	return mysql_query("SHOW TABLES FROM " . mysql_real_escape_string($databaseName, $link), $link);
163		}
164
165		function mysql_list_fields($databaseName, $tableName, \mysqli $link = null)
166		{
167	2	$link = \Dshafik\MySQL::getConnection($link);
168	2	$result = mysql_query(
169		"SHOW COLUMNS FROM " .
170	2	mysqli_real_escape_string($link, $databaseName) . "." .
171	2	mysqli_real_escape_string($link, $tableName),
172		$link
173		);
174
175	2	if ($result instanceof \mysqli_result) {
176	1	$result->table = $tableName;
177	1	return $result;
178		}
179
180	1	trigger_error("mysql_list_fields(): Unable to save MySQL query result", E_USER_WARNING);
181		// @codeCoverageIgnoreStart
182		return false;
183		// @codeCoverageIgnoreEnd
184		}
185
186		function mysql_list_processes(\mysqli $link = null)
187		{
188		return mysql_query("SHOW PROCESSLIST", $link);
189		}
190
191		function mysql_error(\mysqli $link = null)
192		{
193	27	return mysqli_error(\Dshafik\MySQL::getConnection($link));
194		}
195
196		function mysql_errno(\mysqli $link = null)
197		{
198	1	return mysqli_errno(\Dshafik\MySQL::getConnection($link));
199		}
200
201		function mysql_affected_rows(\mysqli $link = null)
202		{
203	1	return mysqli_affected_rows(\Dshafik\MySQL::getConnection($link));
204		}
205
206		function mysql_insert_id($link = null) /\|/
207		{
208	1	return mysqli_insert_id(\Dshafik\MySQL::getConnection($link));
209		}
210
211		function mysql_result($result, $row, $field = 0)
212		{
213	6	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
214		// @codeCoverageIgnoreStart
215		return false;
216		// @codeCoverageIgnoreEnd
217		}
218
219	5	if (!mysqli_data_seek($result, $row)) {
220	1	trigger_error(
221		sprintf(
222	1	"mysql_result(): Unable to jump to row %d on MySQL result index %s",
223		$row,
224		spl_object_hash($result)
225		),
226	1	E_USER_WARNING
227		);
228		// @codeCoverageIgnoreStart
229		return false;
230		// @codeCoverageIgnoreEnd
231		}
232
233	4	$found = true;
234	4	if (strpos($field, ".") !== false) {
235	2	list($table, $name) = explode(".", $field);
236	2	$i = 0;
237	2	$found = false;
238	2	while ($column = mysqli_fetch_field($result)) {
239	2	if ($column->table == $table && $column->name == $name) {
240	1	$field = $i;
241	1	$found = true;
242	1	break;
243		}
244	1	$i++;
245		}
246		}
247
248	4	$row = mysql_fetch_array($result);
249	4	if ($found && isset($row[$field])) {
250	2	return $row[$field];
251		}
252
253	2	trigger_error(
254		sprintf(
255	2	"%s(): %s not found in MySQL result index %s",
256	2	__FUNCTION__,
257		$field,
258		spl_object_hash($result)
259		),
260	2	E_USER_WARNING
261		);
262		// @codeCoverageIgnoreStart
263		return false;
264		// @codeCoverageIgnoreEnd
265		}
266
267		function mysql_num_rows($result)
268		{
269	12	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
270		// @codeCoverageIgnoreStart
271		return false;
272		// @codeCoverageIgnoreEnd
273		}
274
275	11	$previous = error_reporting(0);
276	11	$rows = mysqli_num_rows($result);
277	11	error_reporting($previous);
278
279	11	return $rows;
280		}
281
282		function mysql_num_fields($result)
283		{
284	3	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
285		// @codeCoverageIgnoreStart
286		return false;
287		// @codeCoverageIgnoreEnd
288		}
289	1	return mysqli_num_fields($result);
290		}
291
292		function mysql_fetch_row($result)
293		{
294	6	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
295		// @codeCoverageIgnoreStart
296		return false;
297		// @codeCoverageIgnoreEnd
298		}
299	5	return mysqli_fetch_row($result) ?: false;
300		}
301
302		function mysql_fetch_array($result)
303		{
304	7	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
305		// @codeCoverageIgnoreStart
306		return false;
307		// @codeCoverageIgnoreEnd
308		}
309	6	return mysqli_fetch_array($result) ?: false;
310		}
311
312		function mysql_fetch_assoc($result) /* : array\|null */
313		{
314	7	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
315		// @codeCoverageIgnoreStart
316		return false;
317		// @codeCoverageIgnoreEnd
318		}
319
320	6	return mysqli_fetch_assoc($result) ?: false;
321		}
322
323		function mysql_fetch_object($result, $class = null, array $params = []) /* : object\|null */
324		{
325	3	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
326		// @codeCoverageIgnoreStart
327		return false;
328		// @codeCoverageIgnoreEnd
329		}
330
331	2	if ($class == null) {
332	2	$object = mysqli_fetch_object($result);
333		} else {
334		$object = mysqli_fetch_object($result, $class, $params);
335		}
336
337	2	return $object ?: false;
338		}
339
340		function mysql_data_seek($result, $offset)
341		{
342	1	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
343		// @codeCoverageIgnoreStart
344		return false;
345		// @codeCoverageIgnoreEnd
346		}
347		return mysqli_data_seek($result, $offset);
348		}
349
350		function mysql_fetch_lengths($result) /* : array\|*/
351		{
352	1	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
353		// @codeCoverageIgnoreStart
354		return false;
355		// @codeCoverageIgnoreEnd
356		}
357		return mysqli_fetch_lengths($result);
358		}
359
360		function mysql_fetch_field($result) /* : object\|*/
361		{
362	1	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
363		// @codeCoverageIgnoreStart
364		return false;
365		// @codeCoverageIgnoreEnd
366		}
367		return mysqli_fetch_field($result);
368		}
369
370		function mysql_field_seek($result, $field)
371		{
372	1	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
373		// @codeCoverageIgnoreStart
374		return false;
375		// @codeCoverageIgnoreEnd
376		}
377		return mysqli_field_seek($result, $field);
378		}
379
380		function mysql_free_result($result)
381		{
382	2	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
383		// @codeCoverageIgnoreStart
384		return false;
385		// @codeCoverageIgnoreEnd
386		}
387	1	return mysqli_free_result($result);
388		}
389
390		function mysql_field_name($result, $field)
391		{
392	3	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
393		// @codeCoverageIgnoreStart
394		return false;
395		// @codeCoverageIgnoreEnd
396		}
397	2	return \Dshafik\MySQL::mysqlFieldInfo($result, $field, 'name');
398		}
399
400		function mysql_field_table($result, $field)
401		{
402	3	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
403		// @codeCoverageIgnoreStart
404		return false;
405		// @codeCoverageIgnoreEnd
406		}
407	2	return \Dshafik\MySQL::mysqlFieldInfo($result, $field, 'table');
408		}
409
410		function mysql_field_len($result, $field)
411		{
412	3	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
413		// @codeCoverageIgnoreStart
414		return false;
415		// @codeCoverageIgnoreEnd
416		}
417	2	return \Dshafik\MySQL::mysqlFieldInfo($result, $field, 'len');
418		}
419
420		function mysql_field_type($result, $field)
421		{
422	3	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
423		// @codeCoverageIgnoreStart
424		return false;
425		// @codeCoverageIgnoreEnd
426		}
427	2	return \Dshafik\MySQL::mysqlFieldInfo($result, $field, 'type');
428		}
429
430		function mysql_field_flags($result, $field)
431		{
432	3	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
433		// @codeCoverageIgnoreStart
434		return false;
435		// @codeCoverageIgnoreEnd
436		}
437	2	return \Dshafik\MySQL::mysqlFieldInfo($result, $field, 'flags');
438		}
439
440		function mysql_escape_string($unescapedString)
441		{
442	2	if (\Dshafik\MySQL::$last_connection == null) {
443	2	trigger_error(
444		sprintf(
445	2	"%s() is insecure; use mysql_real_escape_string() instead!",
446	2	__FUNCTION__
447		),
448	2	E_USER_NOTICE
449		);
450
451	1	return \Dshafik\MySQL::escapeString($unescapedString);
452		}
453		return mysql_real_escape_string($unescapedString, null);
454		}
455
456		function mysql_real_escape_string($unescapedString, \mysqli $link = null)
457		{
458	2	return mysqli_escape_string(\Dshafik\MySQL::getConnection($link), $unescapedString);
459		}
460
461		function mysql_stat(\mysqli $link = null)
462		{
463		return mysqli_stat(\Dshafik\MySQL::getConnection($link));
464		}
465
466		function mysql_thread_id(\mysqli $link = null)
467		{
468		return mysqli_thread_id(\Dshafik\MySQL::getConnection($link));
469		}
470
471		function mysql_client_encoding(\mysqli $link = null)
472		{
473		return mysqli_character_set_name(\Dshafik\MySQL::getConnection($link));
474		}
475
476		function mysql_ping(\mysqli $link = null)
477		{
478		return mysqli_ping($link);
479		}
480
481		function mysql_get_client_info(\mysqli $link = null)
482		{
483		return mysqli_get_client_info(\Dshafik\MySQL::getConnection($link));
484		}
485
486		function mysql_get_host_info(\mysqli $link = null)
487		{
488		return mysqli_get_host_info(\Dshafik\MySQL::getConnection($link));
489		}
490
491		function mysql_get_proto_info(\mysqli $link = null)
492		{
493		return mysqli_get_proto_info(\Dshafik\MySQL::getConnection($link));
494		}
495
496		function mysql_get_server_info(\mysqli $link = null)
497		{
498		return mysqli_get_server_info(\Dshafik\MySQL::getConnection($link));
499		}
500
501		function mysql_info(\mysqli $link = null)
502		{
503		return mysqli_info(\Dshafik\MySQL::getConnection($link));
504		}
505
506		function mysql_set_charset($charset, \mysqli $link = null)
507		{
508		return mysqli_set_charset(\Dshafik\MySQL::getConnection($link), $charset);
509		}
510
511		function mysql_db_name($result, $row)
512		{
513	1	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
514		// @codeCoverageIgnoreStart
515		return false;
516		// @codeCoverageIgnoreEnd
517		}
518
519		// Alias as per http://lxr.php.net/xref/PHP_5_6/ext/mysql/php_mysql.c#319
520		return mysql_result($result, $row, 'Database');
521		}
522
523		function mysql_tablename($result, $row)
524		{
525	1	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
526		// @codeCoverageIgnoreStart
527		return false;
528		// @codeCoverageIgnoreEnd
529		}
530
531		// Alias as per http://lxr.php.net/xref/PHP_5_6/ext/mysql/php_mysql.c#321
532		return mysql_result($result, $row, 'Table');
533		}
534
535		/* Aliases */
536
537		function mysql_fieldname(... $args)
538		{
539		return mysql_field_name(... $args);
540		}
541
542		function mysql_fieldtable(... $args)
543		{
544		return mysql_field_table(... $args);
545		}
546
547		function mysql_fieldlen(... $args)
548		{
549		return mysql_field_len(... $args);
550		}
551
552		function mysql_fieldtype(... $args)
553		{
554		return mysql_field_type(... $args);
555		}
556
557		function mysql_fieldflags(... $args)
558		{
559		return mysql_field_flags(... $args);
560		}
561
562		function mysql_selectdb(... $args)
563		{
564		return mysql_select_db(... $args);
565		}
566
567		function mysql_freeresult(... $args)
568		{
569		return mysql_free_result(... $args);
570		}
571
572		function mysql_numfields(... $args)
573		{
574		return mysql_num_fields(... $args);
575		}
576
577		function mysql_numrows(... $args)
578		{
579		return mysql_num_rows(... $args);
580		}
581
582		function mysql_listdbs(... $args)
583		{
584		return mysql_list_dbs(... $args);
585		}
586
587		function mysql_listtables(... $args)
588		{
589		return mysql_list_tables(... $args);
590		}
591
592		function mysql_listfields(... $args)
593		{
594		return mysql_list_fields(... $args);
595		}
596
597		function mysql_dbname(... $args)
598		{
599		return mysql_db_name(... $args);
600		}
601
602		function mysql_table_name(... $args)
603		{
604		return mysql_tablename(... $args);
605		}
606		}
607		}
608
609		namespace Dshafik {
610
611		class MySQL
612		{
613		public static $last_connection = null;
614		public static $connections = [];
615
616	74	public static function getConnection($link = null, $func = null)
617		{
618	74	if ($link !== null) {
619	7	return $link;
620		}
621
622	74	if (static::$last_connection === null) {
623	26	$err = "A link to the server could not be established";
624	26	if ($func !== null) {
625	26	$err = $func . "(): no MySQL-Link resource supplied";
626		}
627	26	trigger_error($err, E_USER_WARNING);
628	26	return false;
629		}
630
631	49	return static::$last_connection;
632		}
633
634	6	public static function mysqlFieldInfo(\mysqli_result $result, $field, $what)
635		{
636		try {
637	6	$field = mysqli_fetch_field_direct($result, $field);
638	5	} catch (\Exception $e) {
639	5	trigger_error(
640		sprintf(
641	5	"mysql_field_%s(): Field %d is invalid for MySQL result index %s",
642		$what,
643		$field,
644		spl_object_hash($result)
645		),
646	5	E_USER_WARNING
647		);
648		// @codeCoverageIgnoreStart
649		// PHPUnit turns the warning into an exception, so this never runs
650		return false;
651		// @codeCoverageIgnoreEnd
652		}
653
654	1	if ($what == 'name' \|\| $what == 'table') {
655	1	return $field->{$what};
656		}
657
658	1	if ($what == 'len') {
659	1	return $field->length;
660		}
661
662	1	if ($what == 'type') {
663	1	return static::getFieldType($field->type);
664		}
665
666	1	if ($what == 'flags') {
667	1	return static::getFieldFlags($field->flags);
668		}
669
670		return false;
671		}
672
673	49	public static function checkValidResult($result, $function)
674		{
675	49	if (!($result instanceof \mysqli_result)) {
676	20	if ($function != "mysql_fetch_object") {
677	19	trigger_error(
678	19	$function . "() expects parameter 1 to be resource, " . strtolower(gettype($result)) . " given",
679	19	E_USER_WARNING
680		);
681		}
682
683	1	if ($function == "mysql_fetch_object") {
684	1	trigger_error(
685	1	$function . "(): supplied argument is not a valid MySQL result resource",
686	1	E_USER_WARNING
687		);
688		}
689		return false;
690		}
691
692	29	}
693
694	1	public static function escapeString($unescapedString)
695		{
696	1	$escapedString = "";
697	1	for ($i = 0; $i < strlen($unescapedString); $i++) {
698	1	$escapedString .= self::escapeChar($unescapedString{$i});
699		}
700
701	1	return $escapedString;
702		}
703
704	1	protected static function getFieldFlags($what)
705		{
706		// Order of flags taken from http://lxr.php.net/xref/PHP_5_6/ext/mysql/php_mysql.c#2507
707		$flags = [
708	1	MYSQLI_NOT_NULL_FLAG => "not_null",
709	1	MYSQLI_PRI_KEY_FLAG => "primary_key",
710	1	MYSQLI_UNIQUE_KEY_FLAG => "unique_key",
711	1	MYSQLI_MULTIPLE_KEY_FLAG => "multiple_key",
712	1	MYSQLI_BLOB_FLAG => "blob",
713	1	MYSQLI_UNSIGNED_FLAG => "unsigned",
714	1	MYSQLI_ZEROFILL_FLAG => "zerofill",
715	1	MYSQLI_BINARY_FLAG => "binary",
716	1	MYSQLI_ENUM_FLAG => "enum",
717	1	MYSQLI_SET_FLAG => "set",
718	1	MYSQLI_AUTO_INCREMENT_FLAG => "auto_increment",
719	1	MYSQLI_TIMESTAMP_FLAG => "timestamp",
720		];
721
722	1	$fieldFlags = [];
723	1	foreach ($flags as $flag => $value) {
724	1	if ($what & $flag) {
725	1	$fieldFlags[] = $value;
726		}
727		}
728
729	1	return implode(" ", $fieldFlags);
730		}
731
732	1	protected static function getFieldType($what)
733		{
734		$types = [
735	1	MYSQLI_TYPE_STRING => 'string',
736	1	MYSQLI_TYPE_VAR_STRING => 'string',
737	1	MYSQLI_TYPE_ENUM => 'string',
738	1	MYSQLI_TYPE_SET => 'string',
739
740	1	MYSQLI_TYPE_LONG => 'int',
741	1	MYSQLI_TYPE_TINY => 'int',
742	1	MYSQLI_TYPE_SHORT => 'int',
743	1	MYSQLI_TYPE_INT24 => 'int',
744	1	MYSQLI_TYPE_CHAR => 'int',
745	1	MYSQLI_TYPE_LONGLONG => 'int',
746
747	1	MYSQLI_TYPE_DECIMAL => 'real',
748	1	MYSQLI_TYPE_FLOAT => 'real',
749	1	MYSQLI_TYPE_DOUBLE => 'real',
750	1	MYSQLI_TYPE_NEWDECIMAL => 'real',
751
752	1	MYSQLI_TYPE_TINY_BLOB => 'blob',
753	1	MYSQLI_TYPE_MEDIUM_BLOB => 'blob',
754	1	MYSQLI_TYPE_LONG_BLOB => 'blob',
755	1	MYSQLI_TYPE_BLOB => 'blob',
756
757	1	MYSQLI_TYPE_NEWDATE => 'date',
758	1	MYSQLI_TYPE_DATE => 'date',
759	1	MYSQLI_TYPE_TIME => 'time',
760	1	MYSQLI_TYPE_YEAR => 'year',
761	1	MYSQLI_TYPE_DATETIME => 'datetime',
762	1	MYSQLI_TYPE_TIMESTAMP => 'timestamp',
763
764	1	MYSQLI_TYPE_NULL => 'null',
765
766	1	MYSQLI_TYPE_GEOMETRY => 'geometry',
767		];
768
769	1	return isset($types[$what]) ? $types[$what] : "unknown";
770		}
771
772	1	protected static function escapeChar($char)
773		{
774		switch ($char) {
775	1	case "\0":
776	1	$esc = "\\0";
777	1	break;
778		case "\n":
779	1	$esc = "\\n";
780	1	break;
781		case "\r":
782	1	$esc = "\\r";
783	1	break;
784		case '\\':
785		case '\'':
786		case '"':
787	1	$esc = "\\{$char}";
788	1	break;
789	1	case "\032":
790	1	$esc = "\\Z";
791	1	break;
792		default:
793	1	$esc = $char;
794	1	break;
795		}
796
797	1	return $esc;
798		}
799		}
800		}
801

dshafik / php7-mysql-shim

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MySQL::escapeChar() C

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