1 | <?php |
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2 | /** |
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3 | * The Strangecode Codebase - a general application development framework for PHP |
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4 | * For details visit the project site: <http://trac.strangecode.com/codebase/> |
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5 | * Copyright 2001-2012 Strangecode, LLC |
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6 | * |
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7 | * This file is part of The Strangecode Codebase. |
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8 | * |
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9 | * The Strangecode Codebase is free software: you can redistribute it and/or |
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10 | * modify it under the terms of the GNU General Public License as published by the |
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11 | * Free Software Foundation, either version 3 of the License, or (at your option) |
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12 | * any later version. |
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13 | * |
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14 | * The Strangecode Codebase is distributed in the hope that it will be useful, but |
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15 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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16 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more |
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17 | * details. |
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18 | * |
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19 | * You should have received a copy of the GNU General Public License along with |
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20 | * The Strangecode Codebase. If not, see <http://www.gnu.org/licenses/>. |
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21 | */ |
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22 | |
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23 | /** |
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24 | * FormValidator.inc.php |
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25 | * |
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26 | * The FormValidator class provides a method for validating input from |
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27 | * http requests and displaying errors. |
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28 | * |
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29 | * @requires codebase/lib/Validator.inc.php |
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30 | * @author Quinn Comendant <quinn@strangecode.com> |
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31 | * @version 1.8 |
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32 | * |
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33 | * Example of use: |
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34 | --------------------------------------------------------------------- |
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35 | // The object that validates form input. |
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36 | require_once 'codebase/lib/FormValidator.inc.php'; |
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37 | $fv = new FormValidator(); |
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38 | |
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39 | $fv->empty('field_name', sprintf(_("%s cannot be blank."), _("Field name"))); |
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40 | $fv->stringLength('field_name', 0, 255, sprintf(_("%s must be %d-to-%d characters in length."), _("Field name"), 0, 255)); |
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41 | $fv->isInteger('field_name', sprintf(_("%s must be an integer."), _("Field name"))); |
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42 | $fv->checkRegex('field_name', '/^\d{4}$|^$/', true, sprintf(_("%s must be in MMYY format."), _("Field name"))); |
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43 | $fv->numericRange('field_name', 0, 65535, sprintf(_("%s must be a number between %d and %d."), _("Field name"), 0, 65535)); |
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44 | $fv->validatePhone('field_name'); |
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45 | $fv->validateEmail('field_name'); |
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46 | $fv->validateStrDate('field_name', sprintf(_("%s must be a valid date in YYYY-MM-DD format."), _("Field name"))); |
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47 | if (is_null($var)) { |
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48 | $fv->addError('field_name', sprintf(_("%s is invalid."), _("Field name"))); |
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49 | } |
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50 | if ($fv->anyErrors()) { |
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51 | // Errors! |
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52 | } |
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53 | --------------------------------------------------------------------- |
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54 | */ |
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55 | |
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56 | // Credit card types are defined in class Validator. |
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57 | |
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58 | require_once 'codebase/lib/Validator.inc.php'; |
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59 | |
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60 | class FormValidator extends Validator { |
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61 | |
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62 | // Class parameters. |
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63 | var $_params = array( |
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64 | 'error' => ' sc-msg-error ', |
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65 | 'warning' => ' sc-msg-warning ', |
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66 | 'notice' => ' sc-msg-notice ', |
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67 | 'success' => ' sc-msg-success ', |
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68 | ); |
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69 | |
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70 | // Array filling with error messages. |
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71 | var $errors = array(); |
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72 | |
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73 | /** |
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74 | * Set (or overwrite existing) parameters by passing an array of new parameters. |
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75 | * |
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76 | * @access public |
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77 | * @param array $params Array of parameters (key => val pairs). |
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78 | */ |
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79 | function setParam($params) |
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80 | { |
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81 | $app =& App::getInstance(); |
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82 | |
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83 | if (isset($params) && is_array($params)) { |
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84 | // Merge new parameters with old overriding only those passed. |
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85 | $this->_params = array_merge($this->_params, $params); |
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86 | } else { |
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87 | $app->logMsg(sprintf('Parameters are not an array: %s', $params), LOG_ERR, __FILE__, __LINE__); |
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88 | } |
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89 | } |
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90 | |
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91 | /** |
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92 | * Return the value of a parameter, if it exists. |
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93 | * |
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94 | * @access public |
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95 | * @param string $param Which parameter to return. |
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96 | * @return mixed Configured parameter value. |
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97 | */ |
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98 | function getParam($param) |
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99 | { |
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100 | $app =& App::getInstance(); |
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101 | |
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102 | if (isset($this->_params[$param])) { |
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103 | return $this->_params[$param]; |
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104 | } else { |
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105 | $app->logMsg(sprintf('Parameter is not set: %s', $param), LOG_DEBUG, __FILE__, __LINE__); |
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106 | return null; |
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107 | } |
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108 | } |
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109 | |
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110 | /** |
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111 | * Return the current list of errors. |
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112 | * |
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113 | * @return array an array of errors in the following arrangement: |
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114 | * keys: the name of the variable with an error |
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115 | * vals: the message to display for that error |
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116 | */ |
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117 | function getErrorList() |
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118 | { |
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119 | return $this->errors; |
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120 | } |
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121 | |
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122 | /** |
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123 | * Add an error to the errors stack. |
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124 | * |
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125 | * @param string $form_name The name of the incoming form variable. |
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126 | * @param string $msg The error message for that form. |
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127 | * @param int $type The type of message: MSG_NOTICE, |
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128 | * MSG_SUCCESS, MSG_WARNING, or MSG_ERR. |
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129 | * @param string $file __FILE__. |
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130 | * @param string $line __LINE__. |
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131 | */ |
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132 | function addError($form_name, $msg='', $type=MSG_ERR, $file=null, $line=null) |
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133 | { |
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134 | $this->errors[] = array( |
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135 | 'name' => $form_name, |
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136 | 'message' => $msg, |
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137 | 'type' => $type, |
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138 | 'file' => $file, |
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139 | 'line' => $line |
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140 | ); |
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141 | } |
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142 | |
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143 | /** |
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144 | * Check whether any errors have been triggered. |
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145 | * |
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146 | * @param string $form_name the name of the incoming form variable |
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147 | * |
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148 | * @return bool true if any errors were found, or if found for |
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149 | * a variable of $form_name, false otherwise |
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150 | */ |
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151 | function anyErrors($form_name=null) |
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152 | { |
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153 | if (isset($form_name)) { |
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154 | foreach ($this->errors as $err) { |
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155 | if ($err['name'] == $form_name) { |
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156 | return $err['type']; |
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157 | } |
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158 | } |
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159 | return false; |
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160 | } else { |
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161 | return (sizeof($this->errors) > 0); |
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162 | } |
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163 | } |
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164 | |
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165 | /** |
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166 | * Reset the error list. |
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167 | */ |
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168 | function resetErrorList() |
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169 | { |
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170 | $this->errors = array(); |
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171 | } |
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172 | |
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173 | /** |
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174 | * Prints the HTML for displaying error messages. |
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175 | * |
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176 | * @param string $above Additional message to print above error messages (e.g. "Oops!"). |
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177 | * @param string $below Additional message to print below error messages (e.g. "Please fix and resubmit"). |
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178 | * @param string $print_gotohash_js Print a line of javascript that scrolls the browser window down to view any error messages. |
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179 | * @param string $hash The #hashtag to scroll to. |
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180 | * @access public |
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181 | * @author Quinn Comendant <quinn@strangecode.com> |
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182 | * @since 15 Jul 2005 01:39:14 |
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183 | */ |
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184 | function printErrorMessages($above='', $below='', $print_gotohash_js=false, $hash='sc-msg-formvalidator') |
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185 | { |
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186 | $app =& App::getInstance(); |
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187 | if ($this->anyErrors()) { |
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188 | ?><div class="sc-msg" id="sc-msg-formvalidator"><?php |
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189 | if ('' != $above) { |
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190 | ?><div class="sc-above"><?php echo oTxt($above); ?></div><?php |
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191 | } |
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192 | foreach ($this->getErrorList() as $e) { |
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193 | if ('' != $e['message'] && is_string($e['message'])) { |
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194 | if (error_reporting() > 0 && $app->getParam('display_errors') && isset($e['file']) && isset($e['line'])) { |
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195 | echo "\n<!-- [" . $e['file'] . ' : ' . $e['line'] . '] -->'; |
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196 | } |
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197 | switch ($e['type']) { |
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198 | case MSG_ERR: |
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199 | echo '<div class="sc-msg-error">' . $e['message'] . '</div>'; |
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200 | break; |
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201 | |
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202 | case MSG_WARNING: |
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203 | echo '<div class="sc-msg-warning">' . $e['message'] . '</div>'; |
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204 | break; |
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205 | |
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206 | case MSG_SUCCESS: |
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207 | echo '<div class="sc-msg-success">' . $e['message'] . '</div>'; |
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208 | break; |
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209 | |
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210 | case MSG_NOTICE: |
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211 | default: |
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212 | echo '<div class="sc-msg-notice">' . $e['message'] . '</div>'; |
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213 | break; |
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214 | } |
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215 | } |
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216 | } |
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217 | if ('' != $below) { |
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218 | ?><div class="sc-below"><?php echo oTxt($below); ?></div><?php |
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219 | } |
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220 | ?></div><?php |
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221 | if ($print_gotohash_js) { |
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222 | ?> |
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223 | <script type="text/javascript"> |
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224 | /* <![CDATA[ */ |
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225 | window.location.hash = '#<?php echo urlencode($hash); ?>'; |
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226 | /* ]]> */ |
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227 | </script> |
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228 | <?php |
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229 | } |
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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 | * If this form has an error, print an error marker like "<<". |
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235 | * |
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236 | * @param string $form_name the name of the incoming form variable |
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237 | * @param string $marker A string to print if there is an error. if |
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238 | * not provided, use default. |
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239 | */ |
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240 | function err($form_name, $marker=null) |
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241 | { |
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242 | if (false !== ($type = $this->anyErrors($form_name))) { |
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243 | if (isset($marker)) { |
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244 | echo $marker; |
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245 | } else { |
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246 | switch ($type) { |
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247 | case MSG_ERR: |
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248 | default: |
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249 | echo $this->getParam('error'); |
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250 | break; |
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251 | |
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252 | case MSG_WARNING: |
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253 | echo $this->getParam('warning'); |
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254 | break; |
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255 | |
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256 | case MSG_NOTICE: |
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257 | echo $this->getParam('notice'); |
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258 | break; |
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259 | |
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260 | case MSG_SUCCESS: |
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261 | echo $this->getParam('success'); |
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262 | break; |
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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 | |
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268 | /** |
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269 | * Ensure the length of string is non-zero. |
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270 | * |
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271 | * @param string $form_name the name of the incoming form variable |
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272 | * @param string $msg the message to display on error |
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273 | * |
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274 | * @return bool true if form is not empty, false otherwise. |
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275 | */ |
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276 | function notEmpty($form_name, $msg='') |
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277 | { |
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278 | if (parent::notEmpty(getFormData($form_name))) { |
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279 | return true; |
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280 | } else { |
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281 | $this->addError($form_name, $msg); |
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282 | return false; |
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283 | } |
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284 | } |
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285 | |
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286 | /* |
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287 | * We were using the isEmpty method *wrong* all these years and should have been using notEmpty. |
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288 | * But the fact is the only use is to ensure a value is not empty, so this function simply becomes |
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289 | * an alias of the one-true notEmpty() function. |
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290 | * @since 03 Jun 2006 22:56:46 |
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291 | */ |
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292 | function isEmpty($form_name, $msg='') |
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293 | { |
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294 | $this->notEmpty($form_name, $msg); |
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295 | } |
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296 | |
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297 | /** |
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298 | * Check whether input is a string. |
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299 | * |
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300 | * @param string $form_name the name of the incoming form variable |
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301 | * @param string $msg the message to display on error |
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302 | * |
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303 | * @return bool true if form is a string, false otherwise. |
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304 | */ |
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305 | function isString($form_name, $msg='') |
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306 | { |
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307 | if (parent::isString(getFormData($form_name))) { |
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308 | return true; |
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309 | } else { |
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310 | $this->addError($form_name, $msg); |
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311 | return false; |
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312 | } |
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313 | } |
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314 | |
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315 | /** |
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316 | * Check whether input is a number. Allows negative numbers. |
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317 | * |
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318 | * @param string $form_name the name of the incoming form variable |
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319 | * @param string $msg the message to display on error |
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320 | * |
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321 | * @return bool true if no errors found, false otherwise |
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322 | */ |
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323 | function isNumber($form_name, $msg='') |
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324 | { |
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325 | if (parent::isNumber(getFormData($form_name))) { |
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326 | return true; |
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327 | } else { |
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328 | $this->addError($form_name, $msg); |
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329 | return false; |
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330 | } |
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331 | } |
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332 | |
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333 | /** |
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334 | * addError if input is NOT an integer. Don't just use is_int() because the |
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335 | * data coming from the user is *really* a string. |
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336 | * |
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337 | * @param string $form_name the name of the incoming form variable |
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338 | * @param string $msg the message to display on error |
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339 | * |
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340 | * @return bool true if value is an integer |
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341 | */ |
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342 | function isInteger($form_name, $msg='', $negative_ok=false) |
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343 | { |
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344 | if (parent::isInteger(getFormData($form_name), $negative_ok)) { |
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345 | return true; |
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346 | } else { |
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347 | $this->addError($form_name, $msg); |
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348 | return false; |
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349 | } |
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350 | } |
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351 | |
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352 | /** |
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353 | * Check whether input is a float. Don't just use is_float() because the |
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354 | * data coming from the user is *really* a string. Integers will also |
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355 | * pass this test. |
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356 | * |
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357 | * @param string $form_name the name of the incoming form variable |
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358 | * @param string $msg the message to display on error |
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359 | * |
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360 | * @return bool true if value is a float |
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361 | */ |
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362 | function isFloat($form_name, $msg='', $negative_ok=false) |
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363 | { |
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364 | if (parent::isFloat(getFormData($form_name), $negative_ok)) { |
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365 | return true; |
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366 | } else { |
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367 | $this->addError($form_name, $msg); |
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368 | return false; |
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369 | } |
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370 | } |
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371 | |
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372 | /** |
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373 | * Check whether input is an array. |
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374 | * |
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375 | * @param string $form_name the name of the incoming form variable |
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376 | * @param string $msg the message to display on error |
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377 | * |
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378 | * @return bool true if value is a float |
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379 | */ |
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380 | function isArray($form_name, $msg='') |
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381 | { |
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382 | if (parent::isArray(getFormData($form_name))) { |
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383 | return true; |
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384 | } else { |
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385 | $this->addError($form_name, $msg); |
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386 | return false; |
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387 | } |
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388 | } |
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389 | |
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390 | /** |
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391 | * Check whether input matches the specified perl regular expression |
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392 | * pattern. |
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393 | * |
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394 | * @param string $form_name The name of the incoming form variable |
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395 | * @param int $regex Perl regex that the string must match |
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396 | * @param bool $valid_on_match Set to true to be valid if match, or false to be valid if the match fails. |
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397 | * @param string $msg The message to display on error |
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398 | * |
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399 | * @return bool true if value passes regex test |
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400 | */ |
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401 | function checkRegex($form_name, $regex, $valid_on_match, $msg='') |
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402 | { |
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403 | if (parent::checkRegex(getFormData($form_name), $regex, $valid_on_match)) { |
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404 | return true; |
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405 | } else { |
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406 | $this->addError($form_name, $msg); |
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407 | return false; |
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408 | } |
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409 | } |
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410 | |
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411 | /** |
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412 | * Tests if the string length is between specified values. Whitespace excluded for min. |
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413 | * |
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414 | * @param string $form_name the name of the incoming form variable |
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415 | * @param int $min minimum length of string, inclusive |
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416 | * @param int $max maximum length of string, inclusive |
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417 | * @param string $msg the message to display on error |
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418 | * |
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419 | * @return bool true if string length is within given boundaries |
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420 | */ |
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421 | function stringLength($form_name, $min, $max, $msg='') |
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422 | { |
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423 | if (parent::stringLength(getFormData($form_name), $min, $max)) { |
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424 | return true; |
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425 | } else { |
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426 | $this->addError($form_name, $msg); |
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427 | return false; |
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428 | } |
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429 | } |
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430 | |
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431 | /** |
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432 | * Check whether input is within a valid numeric range. |
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433 | * |
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434 | * @param string $form_name the name of the incoming form variable |
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435 | * @param int $min minimum value of number, inclusive |
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436 | * @param int $max maximum value of number, inclusive |
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437 | * @param string $msg the message to display on error |
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438 | * |
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439 | * @return bool true if no errors found, false otherwise |
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440 | */ |
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441 | function numericRange($form_name, $min, $max, $msg='') |
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442 | { |
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443 | if (parent::numericRange(getFormData($form_name), $min, $max)) { |
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444 | return true; |
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445 | } else { |
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446 | $this->addError($form_name, $msg); |
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447 | return false; |
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448 | } |
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449 | } |
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450 | |
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451 | /** |
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452 | * Validates an email address based on the recommendations in RFC 3696. |
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453 | * Is more loose than restrictive, to allow the many valid variants of |
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454 | * email addresses while catching the most common mistakes. |
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455 | * http://www.faqs.org/rfcs/rfc822.html |
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456 | * http://www.faqs.org/rfcs/rfc2822.html |
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457 | * http://www.faqs.org/rfcs/rfc3696.html |
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458 | * http://www.faqs.org/rfcs/rfc1035.html |
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459 | * |
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460 | * @access public |
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461 | * @param string $form_name The name of the incoming form variable. |
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462 | * @return bool Validity of address. |
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463 | * @author Quinn Comendant <quinn@strangecode.com> |
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464 | */ |
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465 | function validateEmail($form_name) |
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466 | { |
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467 | $app =& App::getInstance(); |
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468 | |
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469 | $email = getFormData($form_name); |
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470 | |
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471 | if ('' == trim($email)) { |
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472 | // No email address provided, and that's okay. |
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473 | return true; |
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474 | } |
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475 | |
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476 | // Validator::validateEmail() returns a value that relates to the VALIDATE_EMAIL_* constants (defined in Validator.inc.php). |
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477 | switch (parent::validateEmail($email)) { |
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478 | case VALIDATE_EMAIL_REGEX_FAIL: |
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479 | // Failed regex match. |
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480 | $this->addError($form_name, sprintf(_("The email address <em>%s</em> is formatted incorrectly."), oTxt($email))); |
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481 | $app->logMsg(sprintf('The email address %s is not valid.', oTxt($email)), LOG_DEBUG, __FILE__, __LINE__); |
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482 | return false; |
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483 | break; |
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484 | |
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485 | case VALIDATE_EMAIL_LENGTH_FAIL : |
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486 | // Failed length requirements. |
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487 | $this->addError($form_name, sprintf(_("The email address <em>%s</em> is too long (email addresses must have fewer than 256 characters)."), oTxt($email))); |
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488 | $app->logMsg(sprintf('The email address %s must contain less than 256 characters.', oTxt($email)), LOG_DEBUG, __FILE__, __LINE__); |
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489 | return false; |
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490 | break; |
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491 | |
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492 | case VALIDATE_EMAIL_MX_FAIL : |
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493 | // Failed MX record test. |
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494 | $this->addError($form_name, sprintf(_("The email address <em>%s</em> does not have a valid domain name"), oTxt($email))); |
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495 | $app->logMsg(sprintf('The email address %s does not have a valid domain name.', oTxt($email)), LOG_INFO, __FILE__, __LINE__); |
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496 | return false; |
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497 | break; |
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498 | |
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499 | case VALIDATE_EMAIL_SUCCESS : |
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500 | default : |
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501 | return true; |
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502 | break; |
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503 | } |
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504 | } |
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505 | |
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506 | /** |
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507 | * Check whether input is a valid phone number. Notice: it is now set |
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508 | * to allow characters like - or () or + so people can type in a phone |
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509 | * number that looks like: +1 (530) 555-1212 |
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510 | * |
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511 | * @param string $form_name the name of the incoming form variable |
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512 | * |
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513 | * @return bool true if no errors found, false otherwise |
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514 | */ |
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515 | function validatePhone($form_name) |
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516 | { |
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517 | $phone = getFormData($form_name); |
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518 | |
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519 | return ( |
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520 | $this->checkRegex($form_name, '/^[0-9 +().-]*$/', true, sprintf(_("The phone number <em>%s</em> is not valid."), $phone)) |
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521 | && $this->stringLength($form_name, 0, 25, sprintf(_("The phone number <em>%s</em> is too long"), $phone)) |
---|
522 | ); |
---|
523 | } |
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524 | |
---|
525 | /** |
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526 | * Verifies that date can be processed by the strtotime function. |
---|
527 | * |
---|
528 | * @param string $form_name the name of the incoming form variable |
---|
529 | * @param string $msg the message to display on error |
---|
530 | * |
---|
531 | * @return bool true if no errors found, false otherwise |
---|
532 | */ |
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533 | function validateStrDate($form_name, $msg='') |
---|
534 | { |
---|
535 | $app =& App::getInstance(); |
---|
536 | |
---|
537 | if (parent::validateStrDate(getFormData($form_name))) { |
---|
538 | return true; |
---|
539 | } else { |
---|
540 | $this->addError($form_name, $msg); |
---|
541 | $app->logMsg(sprintf('The string date %s is not valid.', getFormData($form_name)), LOG_DEBUG, __FILE__, __LINE__); |
---|
542 | return false; |
---|
543 | } |
---|
544 | } |
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545 | |
---|
546 | |
---|
547 | /** |
---|
548 | * Verifies credit card number using the Luhn (mod 10) algorithm. |
---|
549 | * http://en.wikipedia.org/wiki/Luhn_algorithm |
---|
550 | * |
---|
551 | * @param string $form_name The name of the incoming form variable. |
---|
552 | * @param string $cc_type Optional, card type to do specific checks. One of the CC_TYPE_* constants. |
---|
553 | * |
---|
554 | * @return bool true if no errors found, false otherwise |
---|
555 | */ |
---|
556 | function validateCCNumber($form_name, $cc_type=null) |
---|
557 | { |
---|
558 | $cc_num = getFormData($form_name); |
---|
559 | |
---|
560 | if (parent::validateCCNumber($cc_num, $cc_type)) { |
---|
561 | return true; |
---|
562 | } else { |
---|
563 | $this->addError($form_name, sprintf(_("The credit card number you entered is not valid. Please check the number and try again."), $cc_num)); |
---|
564 | return false; |
---|
565 | } |
---|
566 | } |
---|
567 | |
---|
568 | /** |
---|
569 | * Check whether a file was selected for uploading. If file is missing, it's an error. |
---|
570 | * |
---|
571 | * @param string $form_name the name of the incoming form variable |
---|
572 | * @param string $msg the message to display on error |
---|
573 | * |
---|
574 | * @return bool true if no errors found, false otherwise |
---|
575 | */ |
---|
576 | function fileUploaded($form_name, $msg='') |
---|
577 | { |
---|
578 | if (parent::fileUploaded($form_name)) { |
---|
579 | return true; |
---|
580 | } else { |
---|
581 | $this->addError($form_name, $msg); |
---|
582 | return false; |
---|
583 | } |
---|
584 | } |
---|
585 | |
---|
586 | } // THE END |
---|
587 | |
---|
588 | ?> |
---|