[144] | 1 | <?php |
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| 2 | /** |
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| 3 | * Validator.inc.php |
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| 4 | * Code by Strangecode :: www.strangecode.com :: This document contains copyrighted information |
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| 5 | * |
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| 6 | * The Validator class provides a methods for validating input against different criteria. |
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| 7 | * All functions return true if the input passes the test. |
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| 8 | * |
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| 9 | * @author Quinn Comendant <quinn@strangecode.com> |
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| 10 | * @version 1.0 |
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| 11 | */ |
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| 12 | |
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| 13 | // Known credit card types. |
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| 14 | define('CC_TYPE_VISA', 1); |
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| 15 | define('CC_TYPE_MASTERCARD', 2); |
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| 16 | define('CC_TYPE_AMEX', 3); |
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| 17 | define('CC_TYPE_DISCOVER', 4); |
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| 18 | define('CC_TYPE_DINERS', 5); |
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| 19 | define('CC_TYPE_JCB', 6); |
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| 20 | |
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| 21 | // validateEmail return types. |
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| 22 | define('VALIDATE_EMAIL_REGEX_FAIL', 1); |
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| 23 | define('VALIDATE_EMAIL_LENGTH_FAIL', 2); |
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| 24 | define('VALIDATE_EMAIL_MX_FAIL', 3); |
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| 25 | define('VALIDATE_EMAIL_SUCCESS', 4); |
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| 26 | |
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| 27 | class Validator { |
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| 28 | |
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| 29 | /** |
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| 30 | * Ensures a value is empty. |
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| 31 | * |
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| 32 | * @param string $val The input data to validate. |
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| 33 | * @return bool true if form is not empty, false otherwise. |
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| 34 | */ |
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| 35 | function notEmpty($val) |
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| 36 | { |
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| 37 | return '' != trim((string)$val); |
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| 38 | } |
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| 39 | |
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| 40 | /** |
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| 41 | * Ensures a value is blank. |
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| 42 | * |
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| 43 | * @param string $val The input data to validate. |
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| 44 | * @return bool true if form is empty, false otherwise. |
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| 45 | */ |
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| 46 | function isEmpty($val) |
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| 47 | { |
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| 48 | return '' == trim((string)$val); |
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| 49 | } |
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| 50 | |
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| 51 | /** |
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| 52 | * Check whether input is a string. |
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| 53 | * |
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| 54 | * @param string $val The input data to validate. |
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| 55 | * @return bool true if form is a string, false otherwise. |
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| 56 | */ |
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| 57 | function isString($val) |
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| 58 | { |
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| 59 | return '' == trim((string)$val) || is_string($val); |
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| 60 | } |
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| 61 | |
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| 62 | /** |
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| 63 | * Check whether input is a number. Allows negative numbers. |
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| 64 | * |
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| 65 | * @param string $val The input data to validate. |
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| 66 | * @return bool True if no errors found, false otherwise. |
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| 67 | */ |
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| 68 | function isNumber($val) |
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| 69 | { |
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| 70 | return '' == trim((string)$val) || is_numeric($val); |
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| 71 | } |
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| 72 | |
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| 73 | /** |
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| 74 | * addError if input is NOT an integer. Don't just use is_int() because the |
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| 75 | * data coming from the user is *really* a string. |
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| 76 | * |
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| 77 | * @param string $val The input data to validate. |
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| 78 | * @return bool true if value is an integer |
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| 79 | */ |
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| 80 | function isInteger($val, $negative_ok=false) |
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| 81 | { |
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| 82 | $pattern = $negative_ok ? '/^-?[[:digit:]]+$/' : '/^[[:digit:]]+$/'; |
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| 83 | return '' == trim((string)$val) || (is_numeric($val) && preg_match($pattern, $val)); |
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| 84 | } |
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| 85 | |
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| 86 | /** |
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| 87 | * Check whether input is a float. Don't just use is_float() because the |
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| 88 | * data coming from the user is *really* a string. Integers will also |
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| 89 | * pass this test. |
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| 90 | * |
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| 91 | * @param string $val The input data to validate. |
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| 92 | * @return bool true if value is a float |
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| 93 | */ |
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| 94 | function isFloat($val, $negative_ok=false) |
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| 95 | { |
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| 96 | $pattern = $negative_ok ? '/^-?[[:digit:]]*(?:\.?[[:digit:]]+)$/' : '/^[[:digit:]]*(?:\.?[[:digit:]]+)$/'; |
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| 97 | return '' == trim((string)$val) || (is_numeric($val) && preg_match($pattern, $val)); |
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| 98 | } |
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| 99 | |
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| 100 | /** |
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| 101 | * Check whether input is an array. |
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| 102 | * |
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| 103 | * @param string $val The input data to validate. |
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| 104 | * @return bool true if value is a float |
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| 105 | */ |
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| 106 | function isArray($val) |
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| 107 | { |
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| 108 | return (is_string($val) && '' == trim((string)$val)) || is_array($val); |
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| 109 | } |
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| 110 | |
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| 111 | /** |
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| 112 | * Check whether input matches the specified perl regular expression |
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| 113 | * pattern. |
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| 114 | * |
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| 115 | * @param string $val The input data to validate. |
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| 116 | * @param int $regex PREG that the string must match |
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| 117 | * @param bool $valid_on_match Set to false to be valid if match, or true |
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| 118 | * to be valid on no match |
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| 119 | * @return bool true if value passes regex test |
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| 120 | */ |
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| 121 | function checkRegex($val, $regex, $valid_on_match=true) |
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| 122 | { |
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| 123 | return $valid_on_match ? preg_match($regex, $val) : !preg_match($regex, $val); |
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| 124 | } |
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| 125 | |
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| 126 | /** |
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| 127 | * Tests if the string length is between specified values. Whitespace excluded for min. |
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| 128 | * |
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| 129 | * @param string $val The input data to validate. |
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| 130 | * @param int $min minimum length of string, inclusive |
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| 131 | * @param int $max maximum length of string, inclusive |
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| 132 | * @return bool true if string length is within given boundaries |
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| 133 | */ |
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| 134 | function stringLength($val, $min, $max) |
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| 135 | { |
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| 136 | return strlen(trim((string)$val)) >= $min && strlen($val) <= $max; |
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| 137 | } |
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| 138 | |
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| 139 | /** |
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| 140 | * Check whether input is within a valid numeric range. |
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| 141 | * |
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| 142 | * @param string $val The input data to validate. |
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| 143 | * @param int $min minimum value of number, inclusive |
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| 144 | * @param int $max maximum value of number, inclusive |
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| 145 | * @return bool True if no errors found, false otherwise. |
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| 146 | */ |
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| 147 | function numericRange($val, $min, $max) |
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| 148 | { |
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| 149 | return '' == trim((string)$val) || (is_numeric($val) && $val >= $min && $val <= $max); |
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| 150 | } |
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| 151 | |
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| 152 | /** |
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| 153 | * Validates an email address based on the recommendations in RFC 3696. |
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| 154 | * Is more loose than restrictive, to allow the many valid variants of |
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| 155 | * email addresses while catching the most common mistakes. |
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| 156 | * http://www.faqs.org/rfcs/rfc822.html |
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| 157 | * http://www.faqs.org/rfcs/rfc2822.html |
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| 158 | * http://www.faqs.org/rfcs/rfc3696.html |
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| 159 | * http://www.faqs.org/rfcs/rfc1035.html |
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| 160 | * |
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| 161 | * @access public |
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| 162 | * @param string $val The input data to validate.. |
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| 163 | * @return bool Validity of address. |
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| 164 | * @author Quinn Comendant <quinn@strangecode.com> |
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| 165 | */ |
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| 166 | function validateEmail($val) |
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| 167 | { |
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| 168 | require_once 'codebase/lib/Email.inc.php'; |
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| 169 | $e = new Email(); |
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| 170 | |
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| 171 | // Test email address format. |
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| 172 | if (!preg_match($e->getParam('regex'), $val, $e_parts)) { |
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| 173 | return VALIDATE_EMAIL_REGEX_FAIL; |
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| 174 | } |
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| 175 | |
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| 176 | // We have a match! Here are the captured subpatterns, on which further tests are run. |
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| 177 | // The part before the @. |
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| 178 | $local = $e_parts[2]; |
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| 179 | |
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| 180 | // The part after the @. |
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| 181 | // If domain is an IP [XXX.XXX.XXX.XXX] strip off the brackets. |
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| 182 | $domain = $e_parts[3]{0} == '[' ? substr($e_parts[3], 1, -1) : $e_parts[3]; |
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| 183 | |
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| 184 | // Test length. |
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| 185 | if (strlen($local) > 64 || strlen($domain) > 191) { |
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| 186 | return VALIDATE_EMAIL_LENGTH_FAIL; |
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| 187 | } |
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| 188 | |
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| 189 | // Check domain exists: It's a domain if ip2long fails; Checkdnsrr ensures a MX record exists; Gethostbyname() ensures the domain exists. |
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| 190 | // Compare ip2long twice for php4 backwards compat. |
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| 191 | if ((ip2long($domain) == '-1' || ip2long($domain) === false) && function_exists('checkdnsrr') && !checkdnsrr($domain . '.', 'MX') && gethostbyname($domain) == $domain) { |
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| 192 | return VALIDATE_EMAIL_MX_FAIL; |
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| 193 | } |
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| 194 | |
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| 195 | return VALIDATE_EMAIL_SUCCESS; |
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| 196 | } |
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| 197 | |
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| 198 | /** |
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| 199 | * Verifies that date can be processed by the strtotime function. |
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| 200 | * |
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| 201 | * @param string $val The input data to validate. |
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| 202 | * @return bool True if no errors found, false otherwise. |
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| 203 | */ |
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| 204 | function validateStrDate($val) |
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| 205 | { |
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| 206 | $app =& App::getInstance(); |
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| 207 | |
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| 208 | $timestamp = strtotime($val); |
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| 209 | // Return values change between php4 and php5. |
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| 210 | if ($timestamp === -1 || $timestamp === false) { |
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| 211 | return false; |
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| 212 | } else { |
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| 213 | return true; |
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| 214 | } |
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| 215 | } |
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| 216 | |
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| 217 | |
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| 218 | /** |
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| 219 | * Verifies credit card number. |
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| 220 | * |
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| 221 | * @param string $val The input data to validate.. |
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| 222 | * @param string $cc_num Card number to verify. |
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| 223 | * @param string $cc_type Optional, card type to do specific checks. |
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| 224 | * @return bool True if no errors found, false otherwise. |
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| 225 | */ |
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| 226 | function validateCCNumber($val, $cc_type=null) |
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| 227 | { |
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| 228 | // Get rid of any non-digits |
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| 229 | $cc_num = preg_replace('/[^\d]/', '', $val); |
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| 230 | |
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| 231 | // Perform card-specific checks, if applicable |
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| 232 | switch ($cc_type) { |
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| 233 | case CC_TYPE_VISA : |
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| 234 | $regex = '/^4\d{15}$|^4\d{12}$/'; |
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| 235 | break; |
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| 236 | case CC_TYPE_MASTERCARD : |
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| 237 | $regex = '/^5[1-5]\d{14}$/'; |
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| 238 | break; |
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| 239 | case CC_TYPE_AMEX : |
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| 240 | $regex = '/^3[47]\d{13}$/'; |
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| 241 | break; |
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| 242 | case CC_TYPE_DISCOVER : |
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| 243 | $regex = '/^6011\d{12}$/'; |
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| 244 | break; |
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| 245 | case CC_TYPE_DINERS : |
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| 246 | $regex = '/^30[0-5]\d{11}$|^3[68]\d{12}$/'; |
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| 247 | break; |
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| 248 | case CC_TYPE_JCB : |
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| 249 | $regex = '/^3\d{15}$|^2131|1800\d{11}$/'; |
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| 250 | break; |
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| 251 | default : |
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| 252 | $regex = ''; |
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| 253 | break; |
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| 254 | } |
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| 255 | |
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| 256 | if ('' != $regex && !preg_match($regex, $cc_num)) { |
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| 257 | // Invalid format. |
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| 258 | return false; |
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| 259 | } |
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| 260 | |
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| 261 | // The Luhn formula works right to left, so reverse the number. |
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| 262 | $cc_num = strrev($cc_num); |
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| 263 | |
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| 264 | $luhn_total = 0; |
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| 265 | |
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| 266 | $num = strlen($cc_num); |
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| 267 | for ($i=0; $i<$num; $i++) { |
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| 268 | // Get each digit. |
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| 269 | $digit = substr($cc_num, $i, 1); |
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| 270 | |
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| 271 | // If it's an odd digit, double it. |
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| 272 | if ($i / 2 != floor($i / 2)) { |
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| 273 | $digit *= 2; |
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| 274 | } |
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| 275 | |
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| 276 | // If the result is two digits, add them. |
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| 277 | if (strlen($digit) == 2) { |
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| 278 | $digit = substr($digit, 0, 1) + substr($digit, 1, 1); |
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| 279 | } |
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| 280 | |
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| 281 | // Add the current digit to the $luhn_total. |
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| 282 | $luhn_total += $digit; |
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| 283 | } |
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| 284 | |
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| 285 | // If the Total is evenly divisible by 10, it's cool! |
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| 286 | return $luhn_total % 10 == 0; |
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| 287 | } |
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| 288 | |
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| 289 | /** |
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| 290 | * Check whether a file was selected for uploading. If file is missing, it's an error. |
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| 291 | * |
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| 292 | * @param string $form_name The input data to validate. |
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| 293 | * @return bool True if no errors found, false otherwise. |
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| 294 | */ |
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| 295 | function fileUploaded($form_name) |
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| 296 | { |
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[166] | 297 | return isset($_FILES[$form_name]['tmp_name']) && !empty($_FILES[$form_name]['tmp_name']); |
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[144] | 298 | } |
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| 299 | |
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| 300 | } // THE END |
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| 301 | |
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| 302 | ?> |
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