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 | * The FormValidator:: class provides a method for validating input from |
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7 | * http requests and displaying errors. |
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8 | * |
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9 | * @author Quinn Comendant <quinn@strangecode.com> |
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10 | * @version 1.8 |
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11 | * |
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12 | * Examples of use: |
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13 | * |
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14 | * require_once 'codebase/lib/FormValidator.inc.php'; |
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15 | * $fv = new FormValidator(); |
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16 | * |
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17 | * $fv->isEmpty('location_name', _("<strong>Location name</strong> cannot be blank.")); |
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18 | * $fv->checkRegex('cc_exp', '/^\d{4}$|^$/', true, _("CC exp date must be in MMYY format.")); |
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19 | * $fv->isInteger('client_id', _("<strong>Client id</strong> must be an integer.")); |
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20 | * $fv->numericRange('client_id', -32768, 32767, _("<strong>Client id</strong> must be a number between -32768 and 32767.")); |
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21 | * $fv->stringLength('zip', 0, 255, _("<strong>Zip</strong> must contain less than 256 characters.")); |
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22 | * $fv->validateEmail('invoice_email'); |
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23 | * $fv->validatePhone('phone1'); |
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24 | */ |
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25 | class FormValidator { |
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26 | |
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27 | // Array filling with error messages. |
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28 | var $errors = array(); |
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29 | |
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30 | // Default error marker; |
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31 | var $marker = ' class="sc-msg-error"'; |
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32 | |
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33 | /** |
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34 | * Return the current list of errors. |
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35 | * |
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36 | * @return array an array of errors in the following arrangement: |
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37 | * keys: the name of the variable with an error |
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38 | * vals: the message to display for that error |
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39 | */ |
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40 | function getErrorList() |
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41 | { |
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42 | return $this->errors; |
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43 | } |
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44 | |
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45 | /** |
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46 | * Add an error to the errors stack. |
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47 | * |
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48 | * @param string $form_name The name of the incoming form variable. |
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49 | * @param string $msg The error message for that form. |
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50 | * @param int $type The type of message: MSG_NOTICE, |
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51 | * MSG_SUCCESS, MSG_WARNING, or MSG_ERR. |
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52 | * @param string $file __FILE__. |
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53 | * @param string $line __LINE__. |
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54 | */ |
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55 | function addError($form_name, $msg='', $type=MSG_ERR, $file=null, $line=null) |
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56 | { |
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57 | $this->errors[] = array( |
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58 | 'name' => $form_name, |
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59 | 'message' => $msg, |
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60 | 'type' => $type, |
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61 | 'file' => $file, |
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62 | 'line' => $line |
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63 | ); |
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64 | } |
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65 | |
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66 | /** |
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67 | * Check whether any errors have been triggered. |
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68 | * |
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69 | * @param string $form_name the name of the incoming form variable |
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70 | * |
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71 | * @return bool true if any errors were found, or if found for |
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72 | * a variable of $form_name, false otherwise |
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73 | */ |
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74 | function anyErrors($form_name=null) |
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75 | { |
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76 | if (isset($form_name)) { |
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77 | foreach ($this->errors as $err) { |
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78 | if ($err['name'] == $form_name) { |
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79 | return true; |
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80 | } |
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81 | } |
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82 | return false; |
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83 | } |
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84 | return (sizeof($this->errors) > 0); |
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85 | } |
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86 | |
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87 | /** |
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88 | * Reset the error list. |
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89 | */ |
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90 | function resetErrorList() |
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91 | { |
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92 | $this->errors = array(); |
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93 | } |
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94 | |
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95 | /** |
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96 | * Prints the HTML for displaying error messages. |
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97 | * |
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98 | * @access public |
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99 | * @author Quinn Comendant <quinn@strangecode.com> |
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100 | * @since 15 Jul 2005 01:39:14 |
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101 | */ |
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102 | function printErrorMessages() |
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103 | { |
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104 | if ($this->anyErrors()) { |
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105 | ?><div class="sc-msg"><?php |
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106 | $errors = $this->getErrorList(); |
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107 | foreach ($errors as $err) { |
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108 | if (!empty($err['message']) && is_string($err['message'])) { |
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109 | if (error_reporting() > 0 && isset($err['file']) && isset($err['line'])) { |
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110 | echo "\n<!-- [" . $err['file'] . ' : ' . $err['line'] . '] -->'; |
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111 | } |
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112 | switch ($err['type']) { |
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113 | case MSG_ERR: |
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114 | echo '<div class="sc-msg-error">' . $err['message'] . '</div>'; |
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115 | break; |
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116 | |
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117 | case MSG_WARNING: |
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118 | echo '<div class="sc-msg-warning">' . $err['message'] . '</div>'; |
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119 | break; |
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120 | |
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121 | case MSG_SUCCESS: |
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122 | echo '<div class="sc-msg-success">' . $err['message'] . '</div>'; |
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123 | break; |
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124 | |
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125 | case MSG_NOTICE: |
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126 | default: |
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127 | echo '<div class="sc-msg-notice">' . $err['message'] . '</div>'; |
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128 | break; |
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129 | } |
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130 | } |
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131 | } |
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132 | ?></div><?php |
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133 | } |
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134 | } |
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135 | |
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136 | /** |
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137 | * If this form has an error, print an error marker like "<<". |
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138 | * |
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139 | * @param string $form_name the name of the incoming form variable |
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140 | * @param string $marker A string to print if there is an error. if |
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141 | * not provided, use default. |
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142 | */ |
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143 | function err($form_name, $marker=null) |
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144 | { |
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145 | if ($this->anyErrors($form_name)) { |
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146 | if (isset($marker)) { |
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147 | echo $marker; |
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148 | } else { |
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149 | echo $this->marker; |
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150 | } |
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151 | } |
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152 | } |
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153 | |
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154 | /** |
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155 | * Check whether input has a value. To be used when a value must be empty |
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156 | * under certain circumstances. |
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157 | * |
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158 | * @param string $form_name the name of the incoming form variable |
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159 | * @param string $msg the message to display on error |
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160 | * |
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161 | * @return bool true if form is not empty, false otherwise. |
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162 | */ |
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163 | function notEmpty($form_name, $msg='') |
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164 | { |
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165 | |
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166 | $val = trim(getFormData($form_name)); |
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167 | if ($val != '') { |
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168 | $this->addError($form_name, $msg); |
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169 | return true; |
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170 | } else { |
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171 | return false; |
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172 | } |
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173 | } |
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174 | |
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175 | /** |
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176 | * Check whether input is blank. |
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177 | * |
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178 | * @param string $form_name the name of the incoming form variable |
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179 | * @param string $msg the message to display on error |
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180 | * |
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181 | * @return bool true if form is empty, false otherwise. |
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182 | */ |
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183 | function isEmpty($form_name, $msg='') |
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184 | { |
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185 | |
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186 | $val = trim(getFormData($form_name)); |
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187 | if ($val == '') { |
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188 | $this->addError($form_name, $msg); |
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189 | return true; |
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190 | } else { |
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191 | return false; |
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192 | } |
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193 | } |
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194 | |
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195 | /** |
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196 | * Check whether input is a string. |
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197 | * |
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198 | * @param string $form_name the name of the incoming form variable |
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199 | * @param string $msg the message to display on error |
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200 | * |
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201 | * @return bool true if form is a string, false otherwise. |
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202 | */ |
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203 | function isString($form_name, $msg='') |
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204 | { |
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205 | $val = getFormData($form_name); |
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206 | if (!is_string($val) && $val != '') { |
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207 | $this->addError($form_name, $msg); |
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208 | return false; |
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209 | } else { |
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210 | return true; |
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211 | } |
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212 | } |
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213 | |
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214 | /** |
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215 | * Check whether input is a number. Allows negative numbers. |
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216 | * |
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217 | * @param string $form_name the name of the incoming form variable |
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218 | * @param string $msg the message to display on error |
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219 | * |
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220 | * @return bool true if no errors found, false otherwise |
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221 | */ |
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222 | function isNumber($form_name, $msg='') |
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223 | { |
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224 | $val = getFormData($form_name); |
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225 | if (!is_numeric($val) && $val != '') { |
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226 | $this->addError($form_name, $msg); |
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227 | return false; |
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228 | } else { |
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229 | return true; |
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230 | } |
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231 | } |
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232 | |
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233 | /** |
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234 | * addError if input is NOT an integer. Don't just use is_int() because the |
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235 | * data coming from the user is *really* a string. |
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236 | * |
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237 | * @param string $form_name the name of the incoming form variable |
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238 | * @param string $msg the message to display on error |
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239 | * |
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240 | * @return bool true if value is an integer |
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241 | */ |
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242 | function isInteger($form_name, $msg='', $negative_ok=false) |
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243 | { |
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244 | $val = getFormData($form_name); |
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245 | $pattern = $negative_ok ? '/^-?[[:digit:]]+$/' : '/^[[:digit:]]+$/'; |
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246 | if ((!is_numeric($val) || !preg_match($pattern, $val)) && $val != '') { |
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247 | $this->addError($form_name, $msg); |
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248 | return false; |
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249 | } else { |
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250 | return true; |
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251 | } |
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252 | } |
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253 | |
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254 | /** |
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255 | * Check whether input is a float. Don't just use is_float() because the |
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256 | * data coming from the user is *really* a string. Integers will also |
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257 | * pass this test. |
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258 | * |
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259 | * @param string $form_name the name of the incoming form variable |
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260 | * @param string $msg the message to display on error |
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261 | * |
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262 | * @return bool true if value is a float |
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263 | */ |
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264 | function isFloat($form_name, $msg='', $negative_ok=false) |
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265 | { |
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266 | $val = getFormData($form_name); |
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267 | $pattern = $negative_ok ? '/^-?[[:digit:]]*(?:\.?[[:digit:]]+)$/' : '/^[[:digit:]]*(?:\.?[[:digit:]]+)$/'; |
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268 | if ((!is_numeric($val) || !preg_match($pattern, $val)) && $val != '') { |
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269 | $this->addError($form_name, $msg); |
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270 | return false; |
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271 | } else { |
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272 | return true; |
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273 | } |
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274 | } |
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275 | |
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276 | /** |
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277 | * Check whether input is an array. |
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278 | * |
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279 | * @param string $form_name the name of the incoming form variable |
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280 | * @param string $msg the message to display on error |
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281 | * |
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282 | * @return bool true if value is a float |
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283 | */ |
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284 | function isArray($form_name, $msg='') |
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285 | { |
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286 | $val = getFormData($form_name); |
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287 | if (!is_array($val) && !empty($val)) { |
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288 | $this->addError($form_name, $msg); |
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289 | return false; |
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290 | } else { |
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291 | return true; |
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292 | } |
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293 | } |
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294 | |
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295 | /** |
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296 | * Check whether input matches the specified perl regular expression |
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297 | * pattern. |
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298 | * |
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299 | * @param string $form_name the name of the incoming form variable |
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300 | * @param int $regex perl regex that the string must match |
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301 | * @param bool $not set to false to be valid if match, or true |
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302 | * to be valid on no match |
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303 | * @param string $msg the message to display on error |
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304 | * |
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305 | * @return bool true if value passes regex test |
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306 | */ |
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307 | function checkRegex($form_name, $regex, $not, $msg='') |
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308 | { |
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309 | $val = getFormData($form_name); |
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310 | if ($not) { |
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311 | if (!preg_match($regex, $val)) { |
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312 | $this->addError($form_name, $msg); |
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313 | return false; |
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314 | } else { |
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315 | return true; |
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316 | } |
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317 | } else { |
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318 | if (preg_match($regex, $val)) { |
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319 | $this->addError($form_name, $msg); |
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320 | return false; |
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321 | } else { |
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322 | return true; |
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323 | } |
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324 | } |
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325 | } |
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326 | |
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327 | /** |
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328 | * Tests if the string length is between specified values. Whitespace excluded for min. |
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329 | * |
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330 | * @param string $form_name the name of the incoming form variable |
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331 | * @param int $min minimum length of string, inclusive |
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332 | * @param int $max maximum length of string, inclusive |
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333 | * @param string $msg the message to display on error |
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334 | * |
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335 | * @return bool true if string length is within given boundaries |
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336 | */ |
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337 | function stringLength($form_name, $min, $max, $msg='') |
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338 | { |
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339 | $val = getFormData($form_name); |
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340 | |
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341 | if (strlen(trim($val)) < $min || strlen($val) > $max) { |
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342 | $this->addError($form_name, $msg); |
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343 | return false; |
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344 | } else { |
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345 | return true; |
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346 | } |
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347 | } |
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348 | |
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349 | /** |
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350 | * Check whether input is within a valid numeric range. |
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351 | * |
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352 | * @param string $form_name the name of the incoming form variable |
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353 | * @param int $min minimum value of number, inclusive |
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354 | * @param int $max maximum value of number, inclusive |
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355 | * @param string $msg the message to display on error |
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356 | * |
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357 | * @return bool true if no errors found, false otherwise |
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358 | */ |
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359 | function numericRange($form_name, $min, $max, $msg='') |
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360 | { |
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361 | $val = getFormData($form_name); |
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362 | if ($val != '' && is_numeric($val)) { |
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363 | if ($val < $min || $val > $max) { |
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364 | $this->addError($form_name, $msg); |
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365 | return false; |
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366 | } |
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367 | return true; |
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368 | } else { |
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369 | // Not a number! |
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370 | return false; |
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371 | } |
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372 | } |
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373 | |
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374 | /** |
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375 | * Validates an email address based on the recommendations in RFC 3696. |
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376 | * Is more loose than restrictive, to allow the many valid variants of |
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377 | * email addresses while catching the most common mistakes. |
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378 | * http://www.faqs.org/rfcs/rfc822.html |
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379 | * http://www.faqs.org/rfcs/rfc2822.html |
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380 | * http://www.faqs.org/rfcs/rfc3696.html |
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381 | * http://www.faqs.org/rfcs/rfc1035.html |
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382 | * |
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383 | * @access public |
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384 | * @param string $form_name The name of the incoming form variable. |
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385 | * @return bool Validity of address. |
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386 | * @author Quinn Comendant <quinn@strangecode.com> |
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387 | */ |
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388 | function validateEmail($form_name) |
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389 | { |
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390 | $app =& App::getInstance(); |
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391 | |
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392 | $email = getFormData($form_name); |
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393 | if ('' == trim($email)) { |
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394 | return false; |
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395 | } |
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396 | |
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397 | require_once 'codebase/lib/Email.inc.php'; |
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398 | $e = new Email(); |
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399 | |
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400 | // Test email address format. |
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401 | if (!preg_match($e->getParam('regex'), $email, $e_parts)) { |
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402 | $this->addError($form_name, sprintf(_("<strong>%s</strong> is not a valid email address."), oTxt($email))); |
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403 | $app->logMsg(sprintf('The email address %s is not valid.', getFormData($form_name)), LOG_DEBUG, __FILE__, __LINE__); |
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404 | return false; |
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405 | } |
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406 | |
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407 | // We have a match! Here are the captured subpatterns, on which further tests are run. |
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408 | $local = $e_parts[2]; |
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409 | // If domain is an IP [XXX.XXX.XXX.XXX] strip off the brackets. |
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410 | $domain = $e_parts[3]{0} == '[' ? substr($e_parts[3], 1, -1) : $e_parts[3]; |
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411 | |
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412 | // Test length. |
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413 | if (strlen($local) > 64 || strlen($domain) > 191) { |
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414 | $this->addError($form_name, sprintf(_("<strong>Email address</strong> must contain less than 256 characters."), oTxt($email))); |
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415 | $app->logMsg(sprintf('The email address %s must contain less than 256 characters.', getFormData($form_name)), LOG_DEBUG, __FILE__, __LINE__); |
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416 | return false; |
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417 | } |
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418 | |
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419 | // 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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420 | // Compare ip2long twice for php4 backwards compat. |
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421 | if ((ip2long($domain) == '-1' || ip2long($domain) === false) && function_exists('checkdnsrr') && !checkdnsrr($domain . '.', 'MX') && gethostbyname($domain) == $domain) { |
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422 | $this->addError($form_name, sprintf(_("<strong>%s</strong> is not a valid email domain name"), oTxt($domain))); |
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423 | $app->logMsg(sprintf('The email address %s contains an invalid email domain name (%s).', getFormData($form_name), $domain), LOG_INFO, __FILE__, __LINE__); |
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424 | return false; |
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425 | } |
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426 | |
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427 | return true; |
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428 | } |
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429 | |
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430 | /** |
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431 | * Check whether input is a valid phone number. Notice: it is now set |
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432 | * to allow characters like - or () or + so people can type in a phone |
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433 | * number that looks like: +1 (530) 624-4410 |
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434 | * |
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435 | * @param string $form_name the name of the incoming form variable |
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436 | * |
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437 | * @return bool true if no errors found, false otherwise |
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438 | */ |
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439 | function validatePhone($form_name) |
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440 | { |
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441 | $phone = getFormData($form_name); |
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442 | |
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443 | return $this->checkRegex($form_name, '/^[0-9 +().-]*$/', true, sprintf(_("The phone number <strong>%s</strong> is not valid."), $phone)) |
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444 | && $this->stringLength($form_name, 0, 25, sprintf(_("The phone number <strong>%s</strong> is too long"), $phone)); |
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445 | } |
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446 | |
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447 | /** |
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448 | * Verifies that date can be processed by the strtotime function. |
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449 | * |
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450 | * @param string $form_name the name of the incoming form variable |
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451 | * @param string $msg the message to display on error |
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452 | * |
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453 | * @return bool true if no errors found, false otherwise |
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454 | */ |
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455 | function validateStrDate($form_name, $msg='') |
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456 | { |
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457 | $app =& App::getInstance(); |
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458 | |
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459 | if (($timestamp = strtotime(getFormData($form_name, '0'))) === -1) { |
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460 | $this->addError($form_name, $msg); |
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461 | $app->logMsg(sprintf('The string date %s is not valid.', getFormData($form_name)), LOG_DEBUG, __FILE__, __LINE__); |
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462 | return false; |
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463 | } else { |
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464 | return true; |
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465 | } |
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466 | } |
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467 | |
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468 | |
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469 | /** |
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470 | * Verifies credit card number. |
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471 | * |
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472 | * @param string $form_name The name of the incoming form variable. |
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473 | * @param string $cc_num Card number to verify. |
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474 | * @param string $cc_type Optional, card type to do specific checks. |
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475 | * |
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476 | * @return bool true if no errors found, false otherwise |
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477 | */ |
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478 | function validateCCNumber($form_name, $cc_num=null, $cc_type=null) |
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479 | { |
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480 | if (!isset($cc_num)) { |
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481 | $cc_num = getFormData($form_name); |
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482 | } |
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483 | |
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484 | if ('' == $cc_num) { |
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485 | return false; |
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486 | } |
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487 | |
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488 | // Innocent until proven guilty |
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489 | $card_is_valid = true; |
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490 | |
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491 | // Get rid of any non-digits |
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492 | $cc_num = preg_replace('/[^\d]/', '', $cc_num); |
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493 | |
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494 | // Perform card-specific checks, if applicable |
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495 | switch (strtolower($cc_type)) { |
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496 | case 'visa' : |
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497 | $card_is_valid = preg_match('/^4\d{15}$|^4\d{12}$/', $cc_num); |
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498 | break; |
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499 | case 'mastercard' : |
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500 | case 'mc' : |
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501 | $card_is_valid = preg_match('/^5[1-5]\d{14}$/', $cc_num); |
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502 | break; |
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503 | case 'american_express' : |
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504 | case 'american_ex' : |
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505 | case 'americanexpress' : |
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506 | case 'americanex' : |
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507 | case 'am_ex' : |
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508 | case 'amex' : |
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509 | case 'ae' : |
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510 | $card_is_valid = preg_match('/^3[47]\d{13}$/', $cc_num); |
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511 | break; |
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512 | case 'discover' : |
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513 | $card_is_valid = preg_match('/^6011\d{12}$/', $cc_num); |
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514 | break; |
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515 | case 'diners_club' : |
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516 | case 'dinersclub' : |
---|
517 | case 'diners' : |
---|
518 | case 'diner' : |
---|
519 | case 'dc' : |
---|
520 | $card_is_valid = preg_match('/^30[0-5]\d{11}$|^3[68]\d{12}$/', $cc_num); |
---|
521 | break; |
---|
522 | case 'jcb' : |
---|
523 | $card_is_valid = preg_match('/^3\d{15}$|^2131|1800\d{11}$/', $cc_num); |
---|
524 | break; |
---|
525 | } |
---|
526 | |
---|
527 | // The Luhn formula works right to left, so reverse the number. |
---|
528 | $cc_num = strrev($cc_num); |
---|
529 | |
---|
530 | $luhn_total = 0; |
---|
531 | |
---|
532 | $num = strlen($cc_num); |
---|
533 | for ($i=0; $i<$num; $i++) { |
---|
534 | // Get each digit. |
---|
535 | $digit = substr($cc_num,$i,1); |
---|
536 | |
---|
537 | // If it's an odd digit, double it. |
---|
538 | if ($i / 2 != floor($i / 2)) { |
---|
539 | $digit *= 2; |
---|
540 | } |
---|
541 | |
---|
542 | // If the result is two digits, add them. |
---|
543 | if (strlen($digit) == 2) { |
---|
544 | $digit = substr($digit,0,1) + substr($digit,1,1); |
---|
545 | } |
---|
546 | |
---|
547 | // Add the current digit to the $luhn_total. |
---|
548 | $luhn_total += $digit; |
---|
549 | } |
---|
550 | |
---|
551 | // If it passed (or bypassed) the card-specific check and the Total is evenly divisible by 10, it's cool! |
---|
552 | if ($card_is_valid && $luhn_total % 10 == 0) { |
---|
553 | return true; |
---|
554 | } else { |
---|
555 | $this->addError($form_name, _("The <strong>credit card number</strong> you entered is not valid.")); |
---|
556 | return false; |
---|
557 | } |
---|
558 | } |
---|
559 | |
---|
560 | /** |
---|
561 | * Check whether uploaded file is valid. |
---|
562 | * |
---|
563 | * @param string $form_name the name of the incoming form variable |
---|
564 | * @param string $msg the message to display on error |
---|
565 | * |
---|
566 | * @return bool true if no errors found, false otherwise |
---|
567 | */ |
---|
568 | function validateFile($form_name, $msg='') |
---|
569 | { |
---|
570 | if (isset($_FILES[$form_name]['tmp_name']) && '' == trim($_FILES[$form_name]['tmp_name'])) { |
---|
571 | $this->addError($form_name, $msg); |
---|
572 | return false; |
---|
573 | } else { |
---|
574 | return true; |
---|
575 | } |
---|
576 | } |
---|
577 | |
---|
578 | } // THE END |
---|
579 | |
---|
580 | ?> |
---|