1 | <?php |
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2 | /** |
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3 | * FormValidator.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 | |
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7 | // Examples of use: |
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8 | // |
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9 | // require_once CODE_BASE . '/lib/FormValidator.inc.php'; |
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10 | // $fv = new FormValidator(); |
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11 | // |
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12 | // $fv->isEmpty('location_name', _("<strong>Location name</strong> cannot be blank.")); |
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13 | // $fv->checkRegex('cc_exp', '/^\d{4}$|^$/', true, _("CC exp date must be in MMYY format.")); |
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14 | // $fv->isInteger('client_id', _("<strong>Client id</strong> must be an integer.")); |
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15 | // $fv->numericRange('client_id', -32768, 32767, _("<strong>Client id</strong> must be a number between -32768 and 32767.")); |
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16 | // $fv->stringLength('zip', 0, 255, _("<strong>Zip</strong> must contain less than 256 characters.")); |
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17 | // $fv->validateEmail('invoice_email'); |
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18 | // $fv->validatePhone('phone1'); |
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19 | |
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20 | |
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21 | /** |
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22 | * The FormValidator:: class provides a method for validating input from |
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23 | * http requests and displaying errors. |
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24 | * |
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25 | * @requires This class requires App.inc.php |
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26 | * @requires This class requires Utilities.inc.php |
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27 | * @author Quinn Comendant <quinn@strangecode.com> |
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28 | * @version 1.5 |
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29 | */ |
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30 | |
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31 | require_once dirname(__FILE__) . '/App.inc.php'; |
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32 | require_once dirname(__FILE__) . '/Utilities.inc.php'; |
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33 | require_once dirname(__FILE__) . '/Prefs.inc.php'; |
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34 | |
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35 | class FormValidator |
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36 | { |
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37 | |
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38 | /** |
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39 | * Array filling with errors. The key will be the name of the form where |
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40 | * the data came from. The value will be a message to print to the user. |
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41 | */ |
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42 | var $errors = array(); |
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43 | |
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44 | /** |
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45 | * Return the current list of errors. |
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46 | * |
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47 | * @return array an array of errors in the following arrangement: |
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48 | * keys: the name of the variable with an error |
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49 | * vals: the message to display for that error |
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50 | */ |
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51 | function getErrorList() |
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52 | { |
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53 | return $this->errors; |
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54 | } |
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55 | |
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56 | /** |
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57 | * Add an error to the errors stack. |
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58 | * |
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59 | * @param string $form_name The name of the incoming form variable. |
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60 | * @param string $msg The error message for that form. |
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61 | * @param int $type The type of message: MSG_NOTICE, |
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62 | * MSG_SUCCESS, MSG_WARNING, or MSG_ERR. |
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63 | * @param string $file __FILE__. |
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64 | * @param string $line __LINE__. |
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65 | */ |
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66 | function addError($form_name, $msg='', $type=MSG_ERR, $file=null, $line=null) |
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67 | { |
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68 | $this->errors[] = array( |
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69 | 'name' => $form_name, |
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70 | 'message' => $msg, |
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71 | 'type' => $type, |
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72 | 'file' => $file, |
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73 | 'line' => $line |
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74 | ); |
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75 | } |
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76 | |
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77 | /** |
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78 | * Check whether any errors have been triggered. |
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79 | * |
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80 | * @param string $form_name the name of the incoming form variable |
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81 | * |
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82 | * @return bool true if any errors were found, or if found for |
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83 | * a variable of $form_name, false otherwise |
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84 | */ |
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85 | function anyErrors($form_name=null) |
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86 | { |
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87 | if (isset($form_name)) { |
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88 | foreach ($this->errors as $err) { |
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89 | if ($err['name'] == $form_name) { |
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90 | return true; |
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91 | } |
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92 | } |
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93 | return false; |
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94 | } |
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95 | return (sizeof($this->errors) > 0); |
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96 | } |
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97 | |
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98 | /** |
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99 | * Reset the error list. |
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100 | */ |
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101 | function resetErrorList() |
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102 | { |
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103 | $this->errors = array(); |
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104 | } |
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105 | |
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106 | /** |
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107 | * If this form has an error, print an error marker like "<<". |
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108 | * |
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109 | * @param string $form_name the name of the incoming form variable |
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110 | * @param string $marker A string to print if there is an error. if |
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111 | * not provided, use default. |
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112 | */ |
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113 | function err($form_name, $marker=null) |
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114 | { |
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115 | global $CFG; |
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116 | if ($this->anyErrors($form_name)) { |
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117 | if (isset($marker)) { |
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118 | echo $marker; |
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119 | } else { |
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120 | echo '<span style="color:red; font-size:2em;"><strong>«</strong></span>'; |
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121 | } |
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122 | } |
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123 | } |
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124 | |
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125 | /** |
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126 | * Check whether input has a value. To be used when a value must be empty |
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127 | * under certain circumstances. |
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128 | * |
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129 | * @param string $form_name the name of the incoming form variable |
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130 | * @param string $msg the message to display on error |
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131 | * |
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132 | * @return bool true if form is not empty, false otherwise. |
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133 | */ |
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134 | function notEmpty($form_name, $msg='') |
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135 | { |
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136 | |
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137 | $val = trim(getFormData($form_name)); |
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138 | if ($val != '') { |
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139 | $this->addError($form_name, $msg); |
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140 | return true; |
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141 | } else { |
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142 | return false; |
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143 | } |
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144 | } |
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145 | |
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146 | /** |
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147 | * Check whether input is blank. |
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148 | * |
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149 | * @param string $form_name the name of the incoming form variable |
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150 | * @param string $msg the message to display on error |
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151 | * |
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152 | * @return bool true if form is empty, false otherwise. |
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153 | */ |
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154 | function isEmpty($form_name, $msg='') |
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155 | { |
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156 | |
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157 | $val = trim(getFormData($form_name)); |
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158 | if ($val == '') { |
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159 | $this->addError($form_name, $msg); |
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160 | return true; |
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161 | } else { |
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162 | return false; |
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163 | } |
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164 | } |
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165 | |
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166 | /** |
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167 | * Check whether input is a string. |
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168 | * |
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169 | * @param string $form_name the name of the incoming form variable |
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170 | * @param string $msg the message to display on error |
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171 | * |
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172 | * @return bool true if form is a string, false otherwise. |
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173 | */ |
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174 | function isString($form_name, $msg='') |
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175 | { |
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176 | $val = getFormData($form_name); |
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177 | if (!is_string($val) && $val != '') { |
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178 | $this->addError($form_name, $msg); |
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179 | return false; |
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180 | } else { |
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181 | return true; |
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182 | } |
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183 | } |
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184 | |
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185 | /** |
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186 | * Check whether input is a number. Allows negative numbers. |
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187 | * |
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188 | * @param string $form_name the name of the incoming form variable |
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189 | * @param string $msg the message to display on error |
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190 | * |
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191 | * @return bool true if no errors found, false otherwise |
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192 | */ |
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193 | function isNumber($form_name, $msg='') |
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194 | { |
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195 | $val = getFormData($form_name); |
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196 | if (!is_numeric($val) && $val != '') { |
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197 | $this->addError($form_name, $msg); |
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198 | return false; |
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199 | } else { |
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200 | return true; |
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201 | } |
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202 | } |
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203 | |
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204 | /** |
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205 | * addError if input is NOT an integer. Don't just use is_int() because the |
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206 | * data coming from the user is *really* a string. |
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207 | * |
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208 | * @param string $form_name the name of the incoming form variable |
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209 | * @param string $msg the message to display on error |
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210 | * |
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211 | * @return bool true if value is an integer |
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212 | */ |
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213 | function isInteger($form_name, $msg='', $negative_ok=false) |
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214 | { |
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215 | $val = getFormData($form_name); |
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216 | $pattern = $negative_ok ? '/^-?[[:digit:]]+$/' : '/^[[:digit:]]+$/'; |
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217 | if ((!is_numeric($val) || !preg_match($pattern, $val)) && $val != '') { |
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218 | $this->addError($form_name, $msg); |
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219 | return false; |
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220 | } else { |
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221 | return true; |
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222 | } |
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223 | } |
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224 | |
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225 | /** |
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226 | * Check whether input is a float. Don't just use is_float() because the |
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227 | * data coming from the user is *really* a string. Integers will also |
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228 | * pass this test. |
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229 | * |
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230 | * @param string $form_name the name of the incoming form variable |
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231 | * @param string $msg the message to display on error |
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232 | * |
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233 | * @return bool true if value is a float |
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234 | */ |
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235 | function isFloat($form_name, $msg='', $negative_ok=false) |
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236 | { |
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237 | $val = getFormData($form_name); |
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238 | $pattern = $negative_ok ? '/^-?[[:digit:]]*(?:\.?[[:digit:]]+)$/' : '/^[[:digit:]]*(?:\.?[[:digit:]]+)$/'; |
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239 | if ((!is_numeric($val) || !preg_match($pattern, $val)) && $val != '') { |
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240 | $this->addError($form_name, $msg); |
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241 | return false; |
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242 | } else { |
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243 | return true; |
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244 | } |
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245 | } |
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246 | |
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247 | /** |
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248 | * Check whether input is an array. |
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249 | * |
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250 | * @param string $form_name the name of the incoming form variable |
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251 | * @param string $msg the message to display on error |
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252 | * |
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253 | * @return bool true if value is a float |
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254 | */ |
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255 | function isArray($form_name, $msg='') |
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256 | { |
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257 | $val = getFormData($form_name); |
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258 | if (!is_array($val) && !empty($val)) { |
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259 | $this->addError($form_name, $msg); |
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260 | return false; |
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261 | } else { |
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262 | return true; |
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263 | } |
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264 | } |
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265 | |
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266 | /** |
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267 | * Check whether input matches the specified perl regular expression |
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268 | * pattern. |
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269 | * |
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270 | * @param string $form_name the name of the incoming form variable |
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271 | * @param int $regex perl regex that the string must match |
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272 | * @param bool $not set to false to be valid if match, or true |
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273 | * to be valid on no match |
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274 | * @param string $msg the message to display on error |
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275 | * |
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276 | * @return bool true if value passes regex test |
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277 | */ |
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278 | function checkRegex($form_name, $regex, $not, $msg='') |
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279 | { |
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280 | $val = getFormData($form_name); |
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281 | if ($not) { |
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282 | if (!preg_match($regex, $val)) { |
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283 | $this->addError($form_name, $msg); |
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284 | return false; |
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285 | } else { |
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286 | return true; |
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287 | } |
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288 | } else { |
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289 | if (preg_match($regex, $val)) { |
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290 | $this->addError($form_name, $msg); |
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291 | return false; |
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292 | } else { |
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293 | return true; |
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294 | } |
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295 | } |
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296 | } |
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297 | |
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298 | /** |
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299 | * Tests if the string length is between specified values. Whitespace excluded for min. |
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300 | * |
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301 | * @param string $form_name the name of the incoming form variable |
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302 | * @param int $min minimum length of string, inclusive |
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303 | * @param int $max maximum length of string, inclusive |
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304 | * @param string $msg the message to display on error |
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305 | * |
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306 | * @return bool true if string length is within given boundaries |
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307 | */ |
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308 | function stringLength($form_name, $min, $max, $msg='') |
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309 | { |
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310 | $val = getFormData($form_name); |
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311 | |
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312 | if (strlen(trim($val)) < $min || strlen($val) > $max) { |
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313 | $this->addError($form_name, $msg); |
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314 | return false; |
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315 | } else { |
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316 | return true; |
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317 | } |
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318 | } |
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319 | |
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320 | /** |
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321 | * Check whether input is within a valid numeric range. |
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322 | * |
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323 | * @param string $form_name the name of the incoming form variable |
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324 | * @param int $min minimum value of number, inclusive |
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325 | * @param int $max maximum value of number, inclusive |
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326 | * @param string $msg the message to display on error |
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327 | * |
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328 | * @return bool true if no errors found, false otherwise |
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329 | */ |
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330 | function numericRange($form_name, $min, $max, $msg='') |
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331 | { |
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332 | $val = getFormData($form_name); |
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333 | if ($val != '' && is_numeric($val)) { |
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334 | if ($val < $min || $val > $max) { |
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335 | $this->addError($form_name, $msg); |
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336 | return false; |
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337 | } |
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338 | return true; |
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339 | } else { |
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340 | // Not a number! |
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341 | return false; |
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342 | } |
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343 | } |
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344 | |
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345 | /** |
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346 | * Validates email address length, domain name existance, format. |
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347 | * |
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348 | * @param string $form_name The name of the incoming form variable |
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349 | * |
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350 | * @return bool true if no errors found, false otherwise |
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351 | */ |
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352 | function validateEmail($form_name) |
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353 | { |
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354 | $email = getFormData($form_name); |
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355 | if ('' == trim($email)) { |
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356 | return false; |
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357 | } |
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358 | |
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359 | $regex = '/^(?:[^,@]*\s+|[^,@]*(<)|)' // Display name |
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360 | . '((?:[^.<>\s@\",\[\]]+[^<>\s@\",\[\]])*[^.<>\s@\",\[\]]+)' // Local-part |
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361 | . '@' // @ |
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362 | . '((?:(\[)|[A-Z0-9]?)' // Domain, first char |
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363 | . '(?(4)' // Domain conditional for if first domain char is [ |
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364 | . '(?:[0-9]{1,3}\.){3}[0-9]{1,3}\]' // TRUE, matches IP address |
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365 | . '|' |
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366 | . '[.-]?(?:[A-Z0-9]+[-.])*(?:[A-Z0-9]+\.)+[A-Z]{2,6}))' // FALSE, matches domain name |
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367 | . '(?(1)' // Comment conditional for if initial < exists |
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368 | . '(?:>\s*|>\s+\([^,@]+\)\s*)' // TRUE, ensure ending > |
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369 | . '|' |
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370 | . '(?:|\s*|\s+\([^,@]+\)\s*))$/i'; |
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371 | |
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372 | // Test email address format. |
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373 | if (!preg_match($regex, getFormData($form_name), $e_parts)) { |
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374 | $this->addError($form_name, sprintf(_("The email address <strong>%s</strong> is formatted incorrectly."), oTxt(getFormData($form_name))), MSG_ERR, __FILE__, __LINE__); |
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375 | logMsg(sprintf('The email address %s is not valid.', getFormData($form_name)), LOG_DEBUG, __FILE__, __LINE__); |
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376 | return false; |
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377 | } |
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378 | |
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379 | // We have a match! Here are the captured subpatterns, on which further tests are run. |
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380 | // The part before the @. |
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381 | $local = $e_parts[2]; |
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382 | |
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383 | // The part after the @. |
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384 | // If domain is an IP [XXX.XXX.XXX.XXX] strip off the brackets. |
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385 | $domain = $e_parts[3]{0} == '[' ? mb_substr($e_parts[3], 1, -1) : $e_parts[3]; |
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386 | |
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387 | // Test length. |
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388 | if (mb_strlen($local) > 64 || mb_strlen($domain) > 191) { |
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389 | $this->addError($form_name, sprintf(_("The email address <strong>%s</strong> is too long."), oTxt(getFormData($form_name))), MSG_ERR, __FILE__, __LINE__); |
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390 | logMsg(sprintf('The email address %s is too long.', getFormData($form_name)), LOG_DEBUG, __FILE__, __LINE__); |
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391 | return false; |
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392 | } |
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393 | |
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394 | // 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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395 | // Compare ip2long twice for php4 backwards compat. |
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396 | if ((ip2long($domain) == '-1' || ip2long($domain) === false) && function_exists('checkdnsrr') && !checkdnsrr($domain . '.', 'MX') && gethostbyname($domain) == $domain) { |
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397 | $this->addError($form_name, sprintf(_("The email address <em>%s</em> does not have a valid domain name."), oTxt(getFormData($form_name))), MSG_ERR, __FILE__, __LINE__); |
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398 | logMsg(sprintf('The email address %s does not have a valid domain name.', getFormData($form_name)), LOG_DEBUG, __FILE__, __LINE__); |
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399 | return false; |
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400 | } |
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401 | |
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402 | return true; |
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403 | } |
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404 | |
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405 | /** |
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406 | * Check whether input is a valid phone number. Notice: it is now set |
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407 | * to allow characters like - or () or + so people can type in a phone |
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408 | * number that looks like: +1 (530) 624-4410 |
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409 | * |
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410 | * @param string $form_name the name of the incoming form variable |
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411 | * |
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412 | * @return bool true if no errors found, false otherwise |
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413 | */ |
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414 | function validatePhone($form_name) |
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415 | { |
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416 | $phone = getFormData($form_name); |
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417 | |
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418 | $this->checkRegex($form_name, '/^[0-9 +().-]*$/', true, sprintf(_("The phone number <strong>%s</strong> is not valid."), $phone)); |
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419 | $this->stringLength($form_name, 0, 25, sprintf(_("The phone number <strong>%s</strong> is too long"), $phone)); |
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420 | } |
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421 | |
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422 | /** |
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423 | * Verifies that date can be processed by the strtotime function. |
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424 | * |
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425 | * @param string $form_name the name of the incoming form variable |
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426 | * @param string $msg the message to display on error |
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427 | * |
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428 | * @return bool true if no errors found, false otherwise |
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429 | */ |
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430 | function validateStrDate($form_name, $msg='') |
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431 | { |
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432 | if (($timestamp = strtotime(getFormData($form_name))) === -1) { |
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433 | $this->addError($form_name, $msg); |
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434 | logMsg(sprintf('The string date %s is not valid.', getFormData($form_name)), LOG_DEBUG, __FILE__, __LINE__); |
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435 | return false; |
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436 | } else { |
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437 | return true; |
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438 | } |
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439 | } |
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440 | |
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441 | |
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442 | /** |
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443 | * Verifies credit card number. |
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444 | * |
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445 | * @param string $form_name The name of the incoming form variable. |
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446 | * @param string $cc_num Card number to verify. |
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447 | * @param string $cc_type Optional, card type to do specific checks. |
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448 | * |
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449 | * @return bool true if no errors found, false otherwise |
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450 | */ |
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451 | function validateCCNumber($form_name, $cc_num=null, $cc_type=null) |
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452 | { |
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453 | if (!isset($cc_num)) { |
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454 | $cc_num = getFormData($form_name); |
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455 | } |
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456 | |
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457 | if ('' == $cc_num) { |
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458 | return false; |
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459 | } |
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460 | |
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461 | // Innocent until proven guilty |
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462 | $card_is_valid = true; |
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463 | |
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464 | // Get rid of any non-digits |
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465 | $cc_num = preg_replace('/[^\d]/', '', $cc_num); |
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466 | |
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467 | // Perform card-specific checks, if applicable |
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468 | switch (strtolower($cc_type)) { |
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469 | case 'visa' : |
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470 | $card_is_valid = preg_match('/^4\d{15}$|^4\d{12}$/', $cc_num); |
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471 | break; |
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472 | case 'mastercard' : |
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473 | case 'mc' : |
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474 | $card_is_valid = preg_match('/^5[1-5]\d{14}$/', $cc_num); |
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475 | break; |
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476 | case 'american_express' : |
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477 | case 'american_ex' : |
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478 | case 'americanexpress' : |
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479 | case 'americanex' : |
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480 | case 'am_ex' : |
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481 | case 'amex' : |
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482 | case 'ae' : |
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483 | $card_is_valid = preg_match('/^3[47]\d{13}$/', $cc_num); |
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484 | break; |
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485 | case 'discover' : |
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486 | $card_is_valid = preg_match('/^6011\d{12}$/', $cc_num); |
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487 | break; |
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488 | case 'diners_club' : |
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489 | case 'dinersclub' : |
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490 | case 'diners' : |
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491 | case 'diner' : |
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492 | case 'dc' : |
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493 | $card_is_valid = preg_match('/^30[0-5]\d{11}$|^3[68]\d{12}$/', $cc_num); |
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494 | break; |
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495 | case 'jcb' : |
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496 | $card_is_valid = preg_match('/^3\d{15}$|^2131|1800\d{11}$/', $cc_num); |
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497 | break; |
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498 | } |
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499 | |
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500 | // The Luhn formula works right to left, so reverse the number. |
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501 | $cc_num = strrev($cc_num); |
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502 | |
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503 | $luhn_total = 0; |
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504 | |
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505 | $num = strlen($cc_num); |
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506 | for ($i=0; $i<$num; $i++) { |
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507 | // Get each digit. |
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508 | $digit = substr($cc_num,$i,1); |
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509 | |
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510 | // If it's an odd digit, double it. |
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511 | if ($i / 2 != floor($i / 2)) { |
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512 | $digit *= 2; |
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513 | } |
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514 | |
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515 | // If the result is two digits, add them. |
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516 | if (strlen($digit) == 2) { |
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517 | $digit = substr($digit,0,1) + substr($digit,1,1); |
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518 | } |
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519 | |
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520 | // Add the current digit to the $luhn_total. |
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521 | $luhn_total += $digit; |
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522 | } |
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523 | |
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524 | // If it passed (or bypassed) the card-specific check and the Total is evenly divisible by 10, it's cool! |
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525 | if ($card_is_valid && $luhn_total % 10 == 0) { |
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526 | return true; |
---|
527 | } else { |
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528 | $this->addError($form_name, _("The <strong>credit card number</strong> you entered is not valid.")); |
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529 | return false; |
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530 | } |
---|
531 | } |
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532 | |
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533 | /** |
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534 | * Check whether uploaded file is valid. |
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535 | * |
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536 | * @param string $form_name the name of the incoming form variable |
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537 | * @param string $msg the message to display on error |
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538 | * |
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539 | * @return bool true if no errors found, false otherwise |
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540 | */ |
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541 | function validateFile($form_name, $msg='') |
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542 | { |
---|
543 | if (!isset($_FILES[$form_name]['tmp_name']) || '' == trim($_FILES[$form_name]['tmp_name'])) { |
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544 | $this->addError($form_name, $msg); |
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545 | return false; |
---|
546 | } else { |
---|
547 | return true; |
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548 | } |
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549 | } |
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550 | |
---|
551 | } // THE END |
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552 | |
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553 | ?> |
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