MySQL::mysqlFieldInfo() - Code Metrics - Inspection of "Fix escaping not copying non-escapeable chars to t..." - dshafik/php7-mysql-shim - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 3527de...0beca6 )

by Davey

created 2016-02-02 18:36 UTC

MySQL::mysqlFieldInfo() C

↳ Parent: MySQL

Complexity

Conditions	7
Paths	6

Size

Total Lines	38
Code Lines	21

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	14
CRAP Score	7.0145

Metric	Value
dl	0
loc	38
ccs	14
cts	15
cp	0.9333
rs	6.7272
cc	7
eloc	21
nc	6
nop	3
crap	7.0145

<?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);
            }

            $hash = sha1($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); $i++) {
                switch ($unescapedString{$i}) {
                    case "\0":
                        $esc = "\\0";
                        break;
                    case "\n":
                        $esc = "\\n";
                        break;
                    case "\r":
                        $esc = "\\r";
                        break;
                    case '\\':
                    case '\'':
                    case '"':
                        $esc = "\\{$unescapedString{$i}}";
                        break;
                    case "\032":
                        $esc = "\\Z";
                        break;
                    default:
                        $esc = $unescapedString{$i};
                        break;
                }

                $escapedString .= $esc;

            }

            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

            $flags = [];
            if ($what & MYSQLI_NOT_NULL_FLAG) {
                $flags[] = "not_null";
            }

            if ($what & MYSQLI_PRI_KEY_FLAG) {
                $flags[] = "primary_key";
            }

            if ($what & MYSQLI_UNIQUE_KEY_FLAG) {
                $flags[] = "unique_key";
            }

            if ($what & MYSQLI_MULTIPLE_KEY_FLAG) {
                $flags[] = "multiple_key";
            }

            if ($what & MYSQLI_BLOB_FLAG) {
                $flags[] = "blob";
            }

            if ($what & MYSQLI_UNSIGNED_FLAG) {
                $flags[] = "unsigned";
            }

            if ($what & MYSQLI_ZEROFILL_FLAG) {
                $flags[] = "zerofill";
            }

            if ($what & MYSQLI_BINARY_FLAG) {
                $flags[] = "binary";
            }

            if ($what & MYSQLI_ENUM_FLAG) {
                $flags[] = "enum";
            }

            if ($what & MYSQLI_SET_FLAG) {
                $flags[] = "set";
            }


            if ($what & MYSQLI_AUTO_INCREMENT_FLAG) {
                $flags[] = "auto_increment";
            }

            if ($what & MYSQLI_TIMESTAMP_FLAG) {
                $flags[] = "timestamp";
            }

            return implode(" ", $flags);
        }

        protected static function getFieldType($what)
        {
            switch ($what) {
                case MYSQLI_TYPE_STRING:
                case MYSQLI_TYPE_VAR_STRING:
                case MYSQLI_TYPE_ENUM:
                case MYSQLI_TYPE_SET:
                    return "string";
                case MYSQLI_TYPE_LONG:
                case MYSQLI_TYPE_TINY:
                case MYSQLI_TYPE_SHORT:
                case MYSQLI_TYPE_INT24:
                case MYSQLI_TYPE_CHAR:
                case MYSQLI_TYPE_LONGLONG:
                    return "int";
                case MYSQLI_TYPE_DECIMAL:
                case MYSQLI_TYPE_FLOAT:
                case MYSQLI_TYPE_DOUBLE:
                case MYSQLI_TYPE_NEWDECIMAL:
                    return "real";
                case MYSQLI_TYPE_DATETIME:
                    return "datetime";
                case MYSQLI_TYPE_TIMESTAMP:
                    return "timestamp";
                case MYSQLI_TYPE_NEWDATE:
                case MYSQLI_TYPE_DATE:
                    return "date";
                case MYSQLI_TYPE_TIME:
                    return "time";
                case MYSQLI_TYPE_YEAR:
                    return "year";
                case MYSQLI_TYPE_TINY_BLOB:
                case MYSQLI_TYPE_MEDIUM_BLOB:
                case MYSQLI_TYPE_LONG_BLOB:
                case MYSQLI_TYPE_BLOB:
                    return "blob";
                case MYSQLI_TYPE_NULL:
                    return "null";
                case MYSQLI_TYPE_GEOMETRY:
                    return "geometry";
                case MYSQLI_TYPE_INTERVAL:
                case MYSQLI_TYPE_BIT:
                default:
                    return "unknown";
            }
        }
    }
}


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		$flags = 0
19		) {
20	50	if ($new !== false) {
21	1	trigger_error('Argument $new is no longer supported in PHP > 7', E_USER_WARNING);
22		}
23
24	49	$hash = sha1($hostname . $username . $flags);
25	49	if ($hostname{1} != ':' && isset(\Dshafik\MySQL::$connections[$hash])) {
26	10	\Dshafik\MySQL::$last_connection = \Dshafik\MySQL::$connections[$hash]['conn'];
27	10	\Dshafik\MySQL::$connections[$hash]['refcount'] += 1;
28	10	return \Dshafik\MySQL::$connections[$hash]['conn'];
29		}
30
31	40	if ($flags === 0) {
32	38	\Dshafik\MySQL::$last_connection = $conn = mysqli_connect($hostname, $username, $password);
33	37	$conn->hash = $hash;
34	37	\Dshafik\MySQL::$connections[$hash] = ['refcount' => 1, 'conn' => $conn];
35
36	37	return $conn;
37		}
38
39		try {
40	2	\Dshafik\MySQL::$last_connection = $conn = mysqli_init();
41
42	2	mysqli_real_connect(
43		$conn,
44		$hostname,
45		$username,
46		$password,
47	2	'',
48	2	null,
49	2	'',
50		$flags
51		);
52
53		// @codeCoverageIgnoreStart
54		// PHPUnit turns the warning from mysqli_real_connect into an exception, so this never runs
55		if ($conn === false) {
56		return false;
57		}
58		// @codeCoverageIgnoreEnd
59
60	1	$conn->hash = $hash;
61	1	\Dshafik\MySQL::$connections[$hash] = ['refcount' => 1, 'conn' => $conn];
62
63	1	return $conn;
64	1	} catch (\Throwable $e) {
65	1	trigger_error($e->getMessage(), E_USER_WARNING);
66		// @codeCoverageIgnoreStart
67		// PHPUnit turns the warning into an exception, so this never runs
68		return false;
69		// @codeCoverageIgnoreEnd
70		}
71		}
72
73		function mysql_pconnect(
74		$hostname = null,
75		$username = null,
76		$password = null,
77		$flags = 0
78		) {
79	1	$hostname = 'p:' . $hostname;
80	1	return mysql_connect($hostname, $username, $password, false, $flags);
81		}
82
83		function mysql_close(\mysqli $link = null)
84		{
85	73	$isDefault = ($link === null);
86
87	73	$link = \Dshafik\MySQL::getConnection($link, __FUNCTION__);
88	73	if ($link === null) {
89		// @codeCoverageIgnoreStart
90		// PHPUnit Warning -> Exception
91		return false;
92		// @codeCoverageIgnoreEnd
93		}
94
95	73	if (isset(\Dshafik\MySQL::$connections[$link->hash])) {
96	47	\Dshafik\MySQL::$connections[$link->hash]['refcount'] -= 1;
97		}
98
99	73	$return = true;
100	73	if (\Dshafik\MySQL::$connections[$link->hash]['refcount'] == 0) {
101	64	$return = mysqli_close($link);
102	64	unset(\Dshafik\MySQL::$connections[$link->hash]);
103		}
104
105	73	if ($isDefault) {
106	73	Dshafik\MySQL::$last_connection = null;
107		}
108
109	73	return $return;
110		}
111
112		function mysql_select_db($databaseName, \mysqli $link = null)
113		{
114	41	$link = \Dshafik\MySQL::getConnection($link);
115
116	41	return mysqli_query(
117		$link,
118	41	"USE " . mysqli_real_escape_string($link, $databaseName)
119	41	) !== false;
120		}
121
122		function mysql_query($query, \mysqli $link = null)
123		{
124	44	return mysqli_query(\Dshafik\MySQL::getConnection($link), $query);
125		}
126
127		function mysql_unbuffered_query($query, \mysqli $link = null)
128		{
129	4	$link = \Dshafik\MySQL::getConnection($link);
130	4	if (mysqli_real_query($link, $query)) {
131	3	return mysqli_use_result($link);
132		}
133
134	1	return false;
135		}
136
137		function mysql_db_query($databaseName, $query, \mysqli $link = null)
138		{
139	2	if (mysql_select_db($databaseName, $link)) {
140	1	return mysql_query($query, $link);
141		}
142	1	return false;
143		}
144
145		function mysql_list_dbs(\mysqli $link = null)
146		{
147	1	return mysql_query("SHOW DATABASES", $link);
148		}
149
150		function mysql_list_tables($databaseName, \mysqli $link = null)
151		{
152	2	$link = \Dshafik\MySQL::getConnection($link);
153	2	return mysql_query("SHOW TABLES FROM " . mysql_real_escape_string($databaseName, $link), $link);
154		}
155
156		function mysql_list_fields($databaseName, $tableName, \mysqli $link = null)
157		{
158	2	$link = \Dshafik\MySQL::getConnection($link);
159	2	$result = mysql_query(
160		"SHOW COLUMNS FROM " .
161	2	mysqli_real_escape_string($link, $databaseName) . "." .
162	2	mysqli_real_escape_string($link, $tableName),
163		$link
164		);
165
166	2	if ($result instanceof \mysqli_result) {
167	1	$result->table = $tableName;
168	1	return $result;
169		}
170
171	1	trigger_error("mysql_list_fields(): Unable to save MySQL query result", E_USER_WARNING);
172		// @codeCoverageIgnoreStart
173		return false;
174		// @codeCoverageIgnoreEnd
175		}
176
177		function mysql_list_processes(\mysqli $link = null)
178		{
179		return mysql_query("SHOW PROCESSLIST", $link);
180		}
181
182		function mysql_error(\mysqli $link = null)
183		{
184	27	return mysqli_error(\Dshafik\MySQL::getConnection($link));
185		}
186
187		function mysql_errno(\mysqli $link = null)
188		{
189	1	return mysqli_errno(\Dshafik\MySQL::getConnection($link));
190		}
191
192		function mysql_affected_rows(\mysqli $link = null)
193		{
194	1	return mysqli_affected_rows(\Dshafik\MySQL::getConnection($link));
195		}
196
197		function mysql_insert_id($link = null) /\|/
198		{
199	1	return mysqli_insert_id(\Dshafik\MySQL::getConnection($link));
200		}
201
202		function mysql_result($result, $row, $field = 0)
203		{
204	6	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
205		// @codeCoverageIgnoreStart
206		return false;
207		// @codeCoverageIgnoreEnd
208		}
209
210	5	if (!mysqli_data_seek($result, $row)) {
211	1	trigger_error(
212		sprintf(
213	1	"mysql_result(): Unable to jump to row %d on MySQL result index %s",
214		$row,
215		spl_object_hash($result)
216		),
217	1	E_USER_WARNING
218		);
219		// @codeCoverageIgnoreStart
220		return false;
221		// @codeCoverageIgnoreEnd
222		}
223
224	4	$found = true;
225	4	if (strpos($field, ".") !== false) {
226	2	list($table, $name) = explode(".", $field);
227	2	$i = 0;
228	2	$found = false;
229	2	while ($column = mysqli_fetch_field($result)) {
230	2	if ($column->table == $table && $column->name == $name) {
231	1	$field = $i;
232	1	$found = true;
233	1	break;
234		}
235	1	$i++;
236		}
237		}
238
239	4	$row = mysql_fetch_array($result);
240	4	if ($found && isset($row[$field])) {
241	2	return $row[$field];
242		}
243
244	2	trigger_error(
245		sprintf(
246	2	"%s(): %s not found in MySQL result index %s",
247	2	__FUNCTION__,
248		$field,
249		spl_object_hash($result)
250		),
251	2	E_USER_WARNING
252		);
253		// @codeCoverageIgnoreStart
254		return false;
255		// @codeCoverageIgnoreEnd
256		}
257
258		function mysql_num_rows($result)
259		{
260	12	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
261		// @codeCoverageIgnoreStart
262		return false;
263		// @codeCoverageIgnoreEnd
264		}
265
266	11	$previous = error_reporting(0);
267	11	$rows = mysqli_num_rows($result);
268	11	error_reporting($previous);
269
270	11	return $rows;
271		}
272
273		function mysql_num_fields($result)
274		{
275	3	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
276		// @codeCoverageIgnoreStart
277		return false;
278		// @codeCoverageIgnoreEnd
279		}
280	1	return mysqli_num_fields($result);
281		}
282
283		function mysql_fetch_row($result)
284		{
285	6	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
286		// @codeCoverageIgnoreStart
287		return false;
288		// @codeCoverageIgnoreEnd
289		}
290	5	return mysqli_fetch_row($result) ?: false;
291		}
292
293		function mysql_fetch_array($result)
294		{
295	7	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
296		// @codeCoverageIgnoreStart
297		return false;
298		// @codeCoverageIgnoreEnd
299		}
300	6	return mysqli_fetch_array($result) ?: false;
301		}
302
303		function mysql_fetch_assoc($result) /* : array\|null */
304		{
305	7	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
306		// @codeCoverageIgnoreStart
307		return false;
308		// @codeCoverageIgnoreEnd
309		}
310
311	6	return mysqli_fetch_assoc($result) ?: false;
312		}
313
314		function mysql_fetch_object($result, $class = null, array $params = []) /* : object\|null */
315		{
316	3	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
317		// @codeCoverageIgnoreStart
318		return false;
319		// @codeCoverageIgnoreEnd
320		}
321
322	2	if ($class == null) {
323	2	$object = mysqli_fetch_object($result);
324		} else {
325		$object = mysqli_fetch_object($result, $class, $params);
326		}
327
328	2	return $object ?: false;
329		}
330
331		function mysql_data_seek($result, $offset)
332		{
333	1	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
334		// @codeCoverageIgnoreStart
335		return false;
336		// @codeCoverageIgnoreEnd
337		}
338		return mysqli_data_seek($result, $offset);
339		}
340
341		function mysql_fetch_lengths($result) /* : array\|*/
342		{
343	1	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
344		// @codeCoverageIgnoreStart
345		return false;
346		// @codeCoverageIgnoreEnd
347		}
348		return mysqli_fetch_lengths($result);
349		}
350
351		function mysql_fetch_field($result) /* : object\|*/
352		{
353	1	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
354		// @codeCoverageIgnoreStart
355		return false;
356		// @codeCoverageIgnoreEnd
357		}
358		return mysqli_fetch_field($result);
359		}
360
361		function mysql_field_seek($result, $field)
362		{
363	1	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
364		// @codeCoverageIgnoreStart
365		return false;
366		// @codeCoverageIgnoreEnd
367		}
368		return mysqli_field_seek($result, $field);
369		}
370
371		function mysql_free_result($result)
372		{
373	2	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
374		// @codeCoverageIgnoreStart
375		return false;
376		// @codeCoverageIgnoreEnd
377		}
378	1	return mysqli_free_result($result);
379		}
380
381		function mysql_field_name($result, $field)
382		{
383	3	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
384		// @codeCoverageIgnoreStart
385		return false;
386		// @codeCoverageIgnoreEnd
387		}
388	2	return \Dshafik\MySQL::mysqlFieldInfo($result, $field, 'name');
389		}
390
391		function mysql_field_table($result, $field)
392		{
393	3	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
394		// @codeCoverageIgnoreStart
395		return false;
396		// @codeCoverageIgnoreEnd
397		}
398	2	return \Dshafik\MySQL::mysqlFieldInfo($result, $field, 'table');
399		}
400
401		function mysql_field_len($result, $field)
402		{
403	3	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
404		// @codeCoverageIgnoreStart
405		return false;
406		// @codeCoverageIgnoreEnd
407		}
408	2	return \Dshafik\MySQL::mysqlFieldInfo($result, $field, 'len');
409		}
410
411		function mysql_field_type($result, $field)
412		{
413	3	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
414		// @codeCoverageIgnoreStart
415		return false;
416		// @codeCoverageIgnoreEnd
417		}
418	2	return \Dshafik\MySQL::mysqlFieldInfo($result, $field, 'type');
419		}
420
421		function mysql_field_flags($result, $field)
422		{
423	3	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
424		// @codeCoverageIgnoreStart
425		return false;
426		// @codeCoverageIgnoreEnd
427		}
428	2	return \Dshafik\MySQL::mysqlFieldInfo($result, $field, 'flags');
429		}
430
431		function mysql_escape_string($unescapedString)
432		{
433	2	if (\Dshafik\MySQL::$last_connection == null) {
434	2	trigger_error(
435		sprintf(
436	2	"%s() is insecure; use mysql_real_escape_string() instead!",
437	2	__FUNCTION__
438		),
439	2	E_USER_NOTICE
440		);
441
442	1	return \Dshafik\MySQL::escapeString($unescapedString);
443		}
444		return mysql_real_escape_string($unescapedString, null);
445		}
446
447		function mysql_real_escape_string($unescapedString, \mysqli $link = null)
448		{
449	2	return mysqli_escape_string(\Dshafik\MySQL::getConnection($link), $unescapedString);
450		}
451
452		function mysql_stat(\mysqli $link = null)
453		{
454		return mysqli_stat(\Dshafik\MySQL::getConnection($link));
455		}
456
457		function mysql_thread_id(\mysqli $link = null)
458		{
459		return mysqli_thread_id(\Dshafik\MySQL::getConnection($link));
460		}
461
462		function mysql_client_encoding(\mysqli $link = null)
463		{
464		return mysqli_character_set_name(\Dshafik\MySQL::getConnection($link));
465		}
466
467		function mysql_ping(\mysqli $link = null)
468		{
469		return mysqli_ping($link);
470		}
471
472		function mysql_get_client_info(\mysqli $link = null)
473		{
474		return mysqli_get_client_info(\Dshafik\MySQL::getConnection($link));
475		}
476
477		function mysql_get_host_info(\mysqli $link = null)
478		{
479		return mysqli_get_host_info(\Dshafik\MySQL::getConnection($link));
480		}
481
482		function mysql_get_proto_info(\mysqli $link = null)
483		{
484		return mysqli_get_proto_info(\Dshafik\MySQL::getConnection($link));
485		}
486
487		function mysql_get_server_info(\mysqli $link = null)
488		{
489		return mysqli_get_server_info(\Dshafik\MySQL::getConnection($link));
490		}
491
492		function mysql_info(\mysqli $link = null)
493		{
494		return mysqli_info(\Dshafik\MySQL::getConnection($link));
495		}
496
497		function mysql_set_charset($charset, \mysqli $link = null)
498		{
499		return mysqli_set_charset(\Dshafik\MySQL::getConnection($link), $charset);
500		}
501
502		function mysql_db_name($result, $row)
503		{
504	1	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
505		// @codeCoverageIgnoreStart
506		return false;
507		// @codeCoverageIgnoreEnd
508		}
509
510		// Alias as per http://lxr.php.net/xref/PHP_5_6/ext/mysql/php_mysql.c#319
511		return mysql_result($result, $row, 'Database');
512		}
513
514		function mysql_tablename($result, $row)
515		{
516	1	if (\Dshafik\MySQL::checkValidResult($result, __FUNCTION__)) {
517		// @codeCoverageIgnoreStart
518		return false;
519		// @codeCoverageIgnoreEnd
520		}
521
522		// Alias as per http://lxr.php.net/xref/PHP_5_6/ext/mysql/php_mysql.c#321
523		return mysql_result($result, $row, 'Table');
524		}
525
526		/* Aliases */
527
528		function mysql_fieldname(... $args)
529		{
530		return mysql_field_name(... $args);
531		}
532
533		function mysql_fieldtable(... $args)
534		{
535		return mysql_field_table(... $args);
536		}
537
538		function mysql_fieldlen(... $args)
539		{
540		return mysql_field_len(... $args);
541		}
542
543		function mysql_fieldtype(... $args)
544		{
545		return mysql_field_type(... $args);
546		}
547
548		function mysql_fieldflags(... $args)
549		{
550		return mysql_field_flags(... $args);
551		}
552
553		function mysql_selectdb(... $args)
554		{
555		return mysql_select_db(... $args);
556		}
557
558		function mysql_freeresult(... $args)
559		{
560		return mysql_free_result(... $args);
561		}
562
563		function mysql_numfields(... $args)
564		{
565		return mysql_num_fields(... $args);
566		}
567
568		function mysql_numrows(... $args)
569		{
570		return mysql_num_rows(... $args);
571		}
572
573		function mysql_listdbs(... $args)
574		{
575		return mysql_list_dbs(... $args);
576		}
577
578		function mysql_listtables(... $args)
579		{
580		return mysql_list_tables(... $args);
581		}
582
583		function mysql_listfields(... $args)
584		{
585		return mysql_list_fields(... $args);
586		}
587
588		function mysql_dbname(... $args)
589		{
590		return mysql_db_name(... $args);
591		}
592
593		function mysql_table_name(... $args)
594		{
595		return mysql_tablename(... $args);
596		}
597		}
598		}
599
600		namespace Dshafik {
601
602		class MySQL
603		{
604		public static $last_connection = null;
605		public static $connections = [];
606
607	73	public static function getConnection($link = null, $func = null)
608		{
609	73	if ($link !== null) {
610	7	return $link;
611		}
612
613	73	if (static::$last_connection === null) {
614	26	$err = "A link to the server could not be established";
615	26	if ($func !== null) {
616	26	$err = $func . "(): no MySQL-Link resource supplied";
617		}
618	26	trigger_error($err, E_USER_WARNING);
619	26	return false;
620		}
621
622	48	return static::$last_connection;
623		}
624
625	6	public static function mysqlFieldInfo(\mysqli_result $result, $field, $what)
626		{
627		try {
628	6	$field = mysqli_fetch_field_direct($result, $field);
629	5	} catch (\Exception $e) {
630	5	trigger_error(
631		sprintf(
632	5	"mysql_field_%s(): Field %d is invalid for MySQL result index %s",
633		$what,
634		$field,
635		spl_object_hash($result)
636		),
637	5	E_USER_WARNING
638		);
639		// @codeCoverageIgnoreStart
640		// PHPUnit turns the warning into an exception, so this never runs
641		return false;
642		// @codeCoverageIgnoreEnd
643		}
644
645	1	if ($what == 'name' \|\| $what == 'table') {
646	1	return $field->{$what};
647		}
648
649	1	if ($what == 'len') {
650	1	return $field->length;
651		}
652
653	1	if ($what == 'type') {
654	1	return static::getFieldType($field->type);
655		}
656
657	1	if ($what == 'flags') {
658	1	return static::getFieldFlags($field->flags);
659		}
660
661		return false;
662		}
663
664	49	public static function checkValidResult($result, $function)
665		{
666	49	if (!($result instanceof \mysqli_result)) {
667	20	if ($function != "mysql_fetch_object") {
668	19	trigger_error(
669	19	$function . "() expects parameter 1 to be resource, " . strtolower(gettype($result)) . " given",
670	19	E_USER_WARNING
671		);
672		}
673
674	1	if ($function == "mysql_fetch_object") {
675	1	trigger_error(
676	1	$function . "(): supplied argument is not a valid MySQL result resource",
677	1	E_USER_WARNING
678		);
679		}
680		return false;
681		}
682
683	29	}
684
685	1	public static function escapeString($unescapedString)
686		{
687	1	$escapedString = "";
688	1	for ($i = 0; $i < strlen($unescapedString); $i++) {
689	1	switch ($unescapedString{$i}) {
690		case "\0":
691	1	$esc = "\\0";
692	1	break;
693		case "\n":
694	1	$esc = "\\n";
695	1	break;
696		case "\r":
697	1	$esc = "\\r";
698	1	break;
699		case '\\':
700		case '\'':
701		case '"':
702	1	$esc = "\\{$unescapedString{$i}}";
703	1	break;
704	1	case "\032":
705	1	$esc = "\\Z";
706	1	break;
707		default:
708	1	$esc = $unescapedString{$i};
709	1	break;
710		}
711
712	1	$escapedString .= $esc;
713
714		}
715
716	1	return $escapedString;
717		}
718
719	1	protected static function getFieldFlags($what)
720		{
721		// Order of flags taken from http://lxr.php.net/xref/PHP_5_6/ext/mysql/php_mysql.c#2507
722
723	1	$flags = [];
724	1	if ($what & MYSQLI_NOT_NULL_FLAG) {
725	1	$flags[] = "not_null";
726		}
727
728	1	if ($what & MYSQLI_PRI_KEY_FLAG) {
729	1	$flags[] = "primary_key";
730		}
731
732	1	if ($what & MYSQLI_UNIQUE_KEY_FLAG) {
733	1	$flags[] = "unique_key";
734		}
735
736	1	if ($what & MYSQLI_MULTIPLE_KEY_FLAG) {
737	1	$flags[] = "multiple_key";
738		}
739
740	1	if ($what & MYSQLI_BLOB_FLAG) {
741	1	$flags[] = "blob";
742		}
743
744	1	if ($what & MYSQLI_UNSIGNED_FLAG) {
745		$flags[] = "unsigned";
746		}
747
748	1	if ($what & MYSQLI_ZEROFILL_FLAG) {
749		$flags[] = "zerofill";
750		}
751
752	1	if ($what & MYSQLI_BINARY_FLAG) {
753		$flags[] = "binary";
754		}
755
756	1	if ($what & MYSQLI_ENUM_FLAG) {
757	1	$flags[] = "enum";
758		}
759
760	1	if ($what & MYSQLI_SET_FLAG) {
761	1	$flags[] = "set";
762		}
763
764
765	1	if ($what & MYSQLI_AUTO_INCREMENT_FLAG) {
766	1	$flags[] = "auto_increment";
767		}
768
769	1	if ($what & MYSQLI_TIMESTAMP_FLAG) {
770		$flags[] = "timestamp";
771		}
772
773	1	return implode(" ", $flags);
774		}
775
776	1	protected static function getFieldType($what)
777		{
778		switch ($what) {
779	1	case MYSQLI_TYPE_STRING:
780	1	case MYSQLI_TYPE_VAR_STRING:
781	1	case MYSQLI_TYPE_ENUM:
782	1	case MYSQLI_TYPE_SET:
783	1	return "string";
784	1	case MYSQLI_TYPE_LONG:
785	1	case MYSQLI_TYPE_TINY:
786	1	case MYSQLI_TYPE_SHORT:
787	1	case MYSQLI_TYPE_INT24:
788	1	case MYSQLI_TYPE_CHAR:
789	1	case MYSQLI_TYPE_LONGLONG:
790	1	return "int";
791	1	case MYSQLI_TYPE_DECIMAL:
792	1	case MYSQLI_TYPE_FLOAT:
793	1	case MYSQLI_TYPE_DOUBLE:
794	1	case MYSQLI_TYPE_NEWDECIMAL:
795		return "real";
796	1	case MYSQLI_TYPE_DATETIME:
797		return "datetime";
798	1	case MYSQLI_TYPE_TIMESTAMP:
799		return "timestamp";
800	1	case MYSQLI_TYPE_NEWDATE:
801	1	case MYSQLI_TYPE_DATE:
802		return "date";
803	1	case MYSQLI_TYPE_TIME:
804		return "time";
805	1	case MYSQLI_TYPE_YEAR:
806		return "year";
807	1	case MYSQLI_TYPE_TINY_BLOB:
808	1	case MYSQLI_TYPE_MEDIUM_BLOB:
809	1	case MYSQLI_TYPE_LONG_BLOB:
810	1	case MYSQLI_TYPE_BLOB:
811	1	return "blob";
812		case MYSQLI_TYPE_NULL:
813		return "null";
814		case MYSQLI_TYPE_GEOMETRY:
815		return "geometry";
816		case MYSQLI_TYPE_INTERVAL:
817		case MYSQLI_TYPE_BIT:
818		default:
819		return "unknown";
820		}
821		}
822		}
823		}
824

dshafik / php7-mysql-shim

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MySQL::mysqlFieldInfo() C

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