1 | <?php |
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2 | /** |
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3 | * PEdit.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 | * PEdit provides a mechanism to store text in php variables |
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7 | * which will be printed to the client browser under normal |
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8 | * circumstances, but an authenticated user can 'edit' the document-- |
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9 | * data stored in vars will be shown in html form elements to be editied |
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10 | * and saved. Posted data is stored in XML format in a specified data dir. |
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11 | * A copy of the previous version is saved with the unix |
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12 | * timestamp as part of the filename. This allows reverting to previous versions. |
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13 | * |
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14 | * To use, include this file, initialize variables, |
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15 | * and call printing/editing functions where you want data and forms to |
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16 | * show up. |
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17 | * |
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18 | * @author Quinn Comendant <quinn@strangecode.com> |
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19 | * @concept Beau Smith <beau@beausmith.com> |
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20 | * @version 2.0 |
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21 | * |
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22 | * Example of use: |
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23 | |
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24 | // Initialize PEdit object. |
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25 | require_once 'codebase/lib/PEdit.inc.php'; |
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26 | $pedit = new PEdit(array( |
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27 | 'data_dir' => COMMON_BASE . '/html/_pedit_data', |
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28 | 'authorized' => true, |
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29 | )); |
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30 | |
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31 | // Setup content data types. |
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32 | $pedit->set('title'); |
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33 | $pedit->set('content', array('type' => 'textarea')); |
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34 | |
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35 | // After setting all parameters and data, load the data. |
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36 | $pedit->start(); |
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37 | |
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38 | // Print content. |
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39 | echo $pedit->get('title'); |
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40 | echo $pedit->get('content'); |
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41 | |
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42 | // Print additional PEdit functionality. |
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43 | $pedit->formBegin(); |
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44 | $pedit->printAllForms(); |
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45 | $pedit->printVersions(); |
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46 | $pedit->formEnd(); |
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47 | |
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48 | */ |
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49 | class PEdit { |
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50 | |
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51 | // PEdit object parameters. |
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52 | var $_params = array( |
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53 | 'data_dir' => '', |
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54 | 'character_set' => 'utf-8', |
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55 | 'versions_min_qty' => 20, |
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56 | 'versions_min_days' => 10, |
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57 | ); |
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58 | |
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59 | var $_data = array(); // Array to store loaded data. |
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60 | var $_data_file = ''; // Full file path to the pedit data file. |
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61 | var $_authorized = false; // User is authenticated to see extended functions. |
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62 | var $_data_loaded = false; |
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63 | var $op = ''; |
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64 | |
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65 | /** |
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66 | * Constructs a new PEdit object. Initializes what file is being operated with |
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67 | * (PHP_SELF) and what that operation is. The two |
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68 | * operations that actually modify data (save, restore) are treated differently |
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69 | * than view operations (versions, view, default). They die redirect so you see |
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70 | * the page you just modified. |
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71 | * |
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72 | * @access public |
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73 | * @param optional array $params A hash containing connection parameters. |
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74 | */ |
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75 | function PEdit($params) |
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76 | { |
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77 | $this->setParam($params); |
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78 | |
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79 | if ($this->getParam('authorized') === true) { |
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80 | $this->_authorized = true; |
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81 | } |
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82 | |
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83 | // Setup PEAR XML libraries. |
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84 | require_once 'XML/Unserializer.php'; |
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85 | $this->xml_unserializer =& new XML_Unserializer(array( |
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86 | XML_UNSERIALIZER_OPTION_COMPLEXTYPE => 'array', |
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87 | )); |
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88 | require_once 'XML/Serializer.php'; |
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89 | $this->xml_serializer =& new XML_Serializer(array( |
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90 | XML_SERIALIZER_OPTION_INDENT => ' ', |
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91 | XML_SERIALIZER_OPTION_RETURN_RESULT => true |
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92 | )); |
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93 | } |
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94 | |
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95 | /** |
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96 | * Set (or overwrite existing) parameters by passing an array of new parameters. |
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97 | * |
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98 | * @access public |
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99 | * @param array $params Array of parameters (key => val pairs). |
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100 | */ |
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101 | function setParam($params) |
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102 | { |
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103 | $app =& App::getInstance(); |
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104 | |
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105 | if (isset($params) && is_array($params)) { |
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106 | // Merge new parameters with old overriding only those passed. |
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107 | $this->_params = array_merge($this->_params, $params); |
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108 | } else { |
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109 | $app->logMsg(sprintf('Parameters are not an array: %s', $params), LOG_WARNING, __FILE__, __LINE__); |
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110 | } |
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111 | } |
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112 | |
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113 | /** |
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114 | * Return the value of a parameter, if it exists. |
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115 | * |
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116 | * @access public |
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117 | * @param string $param Which parameter to return. |
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118 | * @return mixed Configured parameter value. |
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119 | */ |
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120 | function getParam($param) |
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121 | { |
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122 | $app =& App::getInstance(); |
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123 | |
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124 | if (isset($this->_params[$param])) { |
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125 | return $this->_params[$param]; |
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126 | } else { |
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127 | $app->logMsg(sprintf('Parameter is not set: %s', $param), LOG_DEBUG, __FILE__, __LINE__); |
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128 | return null; |
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129 | } |
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130 | } |
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131 | |
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132 | /* |
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133 | * Load the pedit data and run automatic functions. |
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134 | * |
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135 | * @access public |
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136 | * @author Quinn Comendant <quinn@strangecode.com> |
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137 | * @since 12 Apr 2006 12:43:47 |
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138 | */ |
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139 | function start($initialize_data_file=false) |
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140 | { |
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141 | $app =& App::getInstance(); |
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142 | |
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143 | if (!is_dir($this->getParam('data_dir'))) { |
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144 | trigger_error(sprintf('PEdit data directory not found: %s', $this->getParam('data_dir')), E_USER_WARNING); |
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145 | } |
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146 | |
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147 | // The location of the data file. (i.e.: "COMMON_DIR/html/_pedit_data/news/index.xml") |
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148 | $this->_data_file = sprintf('%s%s.xml', $this->getParam('data_dir'), $_SERVER['PHP_SELF']); |
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149 | |
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150 | // op is used throughout the script to determine state. |
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151 | $this->op = getFormData('op'); |
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152 | |
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153 | // Automatic functions based on state. |
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154 | switch ($this->op) { |
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155 | case 'Save' : |
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156 | if ($this->_writeData()) { |
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157 | $app->dieURL($_SERVER['PHP_SELF']); |
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158 | } |
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159 | break; |
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160 | case 'Restore' : |
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161 | if ($this->_restoreVersion(getFormData('version'))) { |
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162 | $app->dieURL($_SERVER['PHP_SELF']); |
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163 | } |
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164 | break; |
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165 | case 'View' : |
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166 | $this->_data_file = sprintf('%s%s__%s.xml', $this->getParam('data_dir'), $_SERVER['PHP_SELF'], getFormData('version')); |
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167 | $app->raiseMsg(sprintf(_("This is <em><strong>only a preview</strong></em> of version %s."), getFormData('version')), MSG_NOTICE, __FILE__, __LINE__); |
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168 | break; |
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169 | } |
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170 | |
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171 | // Load data. |
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172 | $this->_loadDataFile(); |
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173 | |
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174 | if ($initialize_data_file === true) { |
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175 | $this->_createVersion(); |
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176 | $this->_initializeDataFile(); |
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177 | } |
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178 | } |
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179 | |
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180 | /** |
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181 | * Stores a variable in the pedit data array with the content name, and type of form. |
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182 | * |
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183 | * @access public |
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184 | * |
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185 | * @param string $content The variable containing the text to store. |
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186 | * @param array $options Additional options to store with this data. |
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187 | */ |
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188 | function set($name, $options=array()) |
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189 | { |
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190 | $app =& App::getInstance(); |
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191 | |
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192 | $name = preg_replace('/\s/', '_', $name); |
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193 | if (!isset($this->_data[$name])) { |
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194 | $this->_data[$name] = array_merge(array('content' => ''), $options); |
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195 | } else { |
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196 | $app->logMsg(sprintf('Duplicate set data: %s', $name), LOG_NOTICE, __FILE__, __LINE__); |
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197 | } |
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198 | } |
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199 | |
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200 | /** |
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201 | * Returns the contents of a data variable. The variable must first be 'set'. |
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202 | * |
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203 | * @access public |
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204 | * @param string $name The name of the variable to return. |
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205 | * @return string The trimmed content of the named data. |
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206 | */ |
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207 | function get($name) |
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208 | { |
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209 | $name = preg_replace('/\s/', '_', $name); |
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210 | if ($this->op != 'Edit' && $this->op != 'Versions' && isset($this->_data[$name]['content'])) { |
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211 | return $this->_data[$name]['content']; |
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212 | } else { |
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213 | return ''; |
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214 | } |
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215 | } |
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216 | |
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217 | /** |
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218 | * Prints the beginning <form> HTML tag, as well as hidden input forms. |
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219 | * |
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220 | * @return bool False if unauthorized or current page is a version. |
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221 | */ |
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222 | function formBegin() |
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223 | { |
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224 | $app =& App::getInstance(); |
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225 | |
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226 | if (!$this->_authorized || empty($this->_data)) { |
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227 | return false; |
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228 | } |
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229 | ?> |
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230 | <form action="<?php echo oTxt($_SERVER['PHP_SELF']); ?>" method="post" id="sc-pedit-form"> |
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231 | <input type="hidden" name="filename" value="<?php echo oTxt($_SERVER['PHP_SELF']); ?>" /> |
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232 | <input type="hidden" name="file_hash" value="<?php echo $this->_fileHash(); ?>" /> |
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233 | <?php |
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234 | $app->printHiddenSession(); |
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235 | switch ($this->op) { |
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236 | case 'Edit' : |
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237 | ?> |
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238 | <div class="sc-pedit-buttons"> |
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239 | <input type="submit" name="op" value="<?php echo _("Save"); ?>" title="<?php echo preg_replace('/^(\w)/i', '($1)', _("Save"))?>" accesskey="<?php echo substr(_("Save"), 0, 1) ?>" /> |
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240 | <input type="submit" name="op" value="<?php echo _("Cancel"); ?>" title="<?php echo preg_replace('/^(\w)/i', '($1)', _("Cancel"))?>" accesskey="<?php echo substr(_("Cancel"), 0, 1) ?>" /> |
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241 | </div> |
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242 | <?php |
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243 | break; |
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244 | case 'View' : |
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245 | ?> |
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246 | <input type="hidden" name="version" value="<?php echo getFormData('version'); ?>" /> |
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247 | <?php |
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248 | break; |
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249 | } |
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250 | } |
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251 | |
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252 | /** |
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253 | * Loops through the PEdit data array and prints all the HTML forms corresponding |
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254 | * to all pedit variables, in the order in which they were 'set'. |
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255 | * |
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256 | * @access public |
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257 | */ |
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258 | function printAllForms() |
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259 | { |
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260 | if ($this->_authorized && $this->op == 'Edit' && is_array($this->_data) && $this->_data_loaded) { |
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261 | foreach ($this->_data as $name=>$d) { |
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262 | $this->printForm($name); |
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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 | * Prints the HTML forms corresponding to pedit variables. Each variable |
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269 | * must first be 'set'. |
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270 | * |
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271 | * @access public |
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272 | * @param string $name The name of the variable. |
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273 | * @param string $type Type of form to print. Currently only 'text' and 'textarea' supported. |
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274 | */ |
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275 | function printForm($name, $type='text') |
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276 | { |
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277 | if ($this->_authorized && $this->op == 'Edit' && $this->_data_loaded) { |
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278 | ?> |
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279 | <div class="sc-pedit-item"> |
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280 | <?php |
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281 | $type = (isset($this->_data[$name]['type'])) ? $this->_data[$name]['type'] : $type; |
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282 | // Print edit form. |
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283 | switch ($type) { |
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284 | case 'text' : |
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285 | default : |
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286 | ?> |
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287 | <label><?php echo ucfirst(str_replace('_', ' ', $name)); ?></label> |
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288 | <input type="text" name="_pedit_data[<?php echo $name; ?>]" id="sc-pedit-field-<?php echo $name; ?>" value="<?php echo oTxt($this->_data[$name]['content']); ?>" class="sc-full" /> |
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289 | <?php |
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290 | break; |
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291 | case 'textarea' : |
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292 | ?> |
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293 | <label><?php echo ucfirst(str_replace('_', ' ', $name)); ?></label> |
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294 | <textarea name="_pedit_data[<?php echo $name; ?>]" id="sc-pedit-field-<?php echo $name; ?>" rows="" cols="" class="sc-full sc-tall"><?php echo oTxt($this->_data[$name]['content']); ?></textarea> |
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295 | <?php |
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296 | break; |
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297 | } |
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298 | ?> |
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299 | </div> |
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300 | <?php |
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301 | } |
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302 | } |
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303 | |
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304 | /** |
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305 | * Prints the endig </form> HTML tag, as well as buttons used during |
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306 | * different operations. |
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307 | * |
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308 | * @return bool False if unauthorized or current page is a version. |
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309 | */ |
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310 | function formEnd() |
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311 | { |
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312 | if (!$this->_authorized || empty($this->_data)) { |
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313 | // Don't show form elements for versioned documents. |
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314 | return false; |
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315 | } |
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316 | switch ($this->op) { |
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317 | case 'Edit' : |
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318 | ?> |
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319 | <div class="sc-pedit-buttons"> |
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320 | <input type="submit" name="op" value="<?php echo _("Save"); ?>" title="<?php echo preg_replace('/^(\w)/i', '($1)', _("Save"))?>" accesskey="<?php echo substr(_("Save"), 0, 1) ?>" /> |
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321 | <input type="submit" name="op" value="<?php echo _("Cancel"); ?>" title="<?php echo preg_replace('/^(\w)/i', '($1)', _("Cancel"))?>" accesskey="<?php echo substr(_("Cancel"), 0, 1) ?>" /> |
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322 | </div> |
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323 | </form> |
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324 | <?php |
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325 | break; |
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326 | case 'Versions' : |
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327 | ?> |
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328 | <div class="sc-pedit-buttons"> |
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329 | <input type="submit" name="op" value="<?php echo _("Cancel"); ?>" title="<?php echo preg_replace('/^(\w)/i', '($1)', _("Cancel"))?>" accesskey="<?php echo substr(_("Cancel"), 0, 1) ?>" /> |
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330 | </div> |
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331 | </form> |
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332 | <?php |
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333 | break; |
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334 | case 'View' : |
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335 | ?> |
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336 | <div class="sc-pedit-buttons"> |
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337 | <input type="submit" name="op" value="<?php echo _("Restore"); ?>" title="<?php echo preg_replace('/^(\w)/i', '($1)', _("Restore"))?>" accesskey="<?php echo substr(_("Restore"), 0, 1) ?>" /> |
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338 | <input type="submit" name="op" value="<?php echo _("Versions"); ?>" title="<?php echo preg_replace('/^(\w)/i', '($1)', _("Versions"))?>" accesskey="<?php echo substr(_("Versions"), 0, 1) ?>" /> |
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339 | <input type="submit" name="op" value="<?php echo _("Cancel"); ?>" title="<?php echo preg_replace('/^(\w)/i', '($1)', _("Cancel"))?>" accesskey="<?php echo substr(_("Cancel"), 0, 1) ?>" /> |
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340 | </div> |
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341 | </form> |
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342 | <?php |
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343 | break; |
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344 | default : |
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345 | ?> |
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346 | <div class="sc-pedit-buttons"> |
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347 | <input type="submit" name="op" value="<?php echo _("Edit"); ?>" title="<?php echo preg_replace('/^(\w)/i', '($1)', _("Edit"))?>" accesskey="<?php echo substr(_("Edit"), 0, 1) ?>" /> |
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348 | <input type="submit" name="op" value="<?php echo _("Versions"); ?>" title="<?php echo preg_replace('/^(\w)/i', '($1)', _("Versions"))?>" accesskey="<?php echo substr(_("Versions"), 0, 1) ?>" /> |
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349 | </div> |
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350 | </form> |
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351 | <?php |
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352 | } |
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353 | } |
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354 | |
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355 | /** |
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356 | * Prints an HTML list of versions of current file, with the filesize |
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357 | * and links to view and restore the file. |
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358 | * |
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359 | * @access public |
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360 | */ |
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361 | function printVersions() |
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362 | { |
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363 | $app =& App::getInstance(); |
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364 | |
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365 | if ($this->_authorized && $this->op == 'Versions') { |
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366 | // Print versions and commands to view/restore. |
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367 | $version_files = $this->_getVersions(); |
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368 | ?><h1><?php printf(_("%s saved versions of %s"), sizeof($version_files), basename($_SERVER['PHP_SELF'])); ?></h1><?php |
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369 | if (is_array($version_files) && !empty($version_files)) { |
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370 | ?> |
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371 | <table id="sc-pedit-versions-table"> |
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372 | <tr> |
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373 | <th><?php echo _("Date"); ?></th> |
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374 | <th><?php echo _("Time"); ?></th> |
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375 | <th><?php echo _("File size"); ?></th> |
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376 | <th><?php echo _("Version options"); ?></th> |
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377 | </tr> |
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378 | <?php |
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379 | foreach ($version_files as $v) { |
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380 | ?> |
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381 | <tr> |
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382 | <td><?php echo date($app->getParam('date_format'), $v['unixtime']); ?></td> |
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383 | <td><?php echo date($app->getParam('time_format'), $v['unixtime']); ?></td> |
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384 | <td><?php echo humanFileSize($v['filesize']); ?></td> |
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385 | <td class="sc-nowrap"><a href="<?php echo $app->oHREF($_SERVER['PHP_SELF'] . '?op=View&version=' . $v['unixtime'] . '&file_hash=' . $this->_fileHash()); ?>"><?php echo _("View"); ?></a> <?php echo _("or"); ?> <a href="<?php echo $app->oHREF($_SERVER['PHP_SELF'] . '?op=Restore&version=' . $v['unixtime'] . '&file_hash=' . $this->_fileHash()); ?>"><?php echo _("Restore"); ?></a></td> |
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386 | </tr> |
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387 | <?php |
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388 | } |
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389 | ?> |
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390 | </table> |
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391 | <div class="sc-help"><?php printf(_("When there are more than %s versions, those over %s days old are deleted."), $this->getParam('versions_min_qty'), $this->getParam('versions_min_days')); ?></div> |
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392 | <?php |
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393 | } |
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394 | } |
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395 | } |
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396 | |
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397 | /* |
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398 | * Returns a secreat hash for the current file. |
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399 | * |
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400 | * @access public |
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401 | * @author Quinn Comendant <quinn@strangecode.com> |
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402 | * @since 12 Apr 2006 10:52:35 |
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403 | */ |
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404 | function _fileHash() |
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405 | { |
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406 | $app =& App::getInstance(); |
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407 | |
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408 | return md5($app->getParam('signing_key') . $_SERVER['PHP_SELF']); |
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409 | } |
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410 | |
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411 | /* |
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412 | * Load the XML data file into $this->_data. |
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413 | * |
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414 | * @access public |
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415 | * @return bool false on error |
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416 | * @author Quinn Comendant <quinn@strangecode.com> |
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417 | * @since 11 Apr 2006 20:36:26 |
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418 | */ |
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419 | function _loadDataFile() |
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420 | { |
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421 | $app =& App::getInstance(); |
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422 | |
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423 | if (!file_exists($this->_data_file)) { |
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424 | if (!$this->_initializeDataFile()) { |
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425 | $app->logMsg(sprintf('Initializing content file failed: %s', $this->_data_file), LOG_WARNING, __FILE__, __LINE__); |
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426 | return false; |
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427 | } |
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428 | } |
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429 | $xml_file_contents = file_get_contents($this->_data_file); |
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430 | $status = $this->xml_unserializer->unserialize($xml_file_contents, false); |
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431 | if (PEAR::isError($status)) { |
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432 | $app->logMsg(sprintf('XML_Unserialize error: %s', $status->getMessage()), LOG_WARNING, __FILE__, __LINE__); |
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433 | return false; |
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434 | } |
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435 | $xml_file_data = $this->xml_unserializer->getUnserializedData(); |
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436 | |
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437 | // Only load data specified with set(), even though there may be more in the xml file. |
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438 | foreach ($this->_data as $name => $initial_data) { |
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439 | if (isset($xml_file_data[$name])) { |
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440 | $this->_data[$name] = array_merge($initial_data, $xml_file_data[$name]); |
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441 | } else { |
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442 | $this->_data[$name] = $initial_data; |
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443 | } |
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444 | } |
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445 | |
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446 | $this->_data_loaded = true; |
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447 | return true; |
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448 | } |
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449 | |
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450 | /* |
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451 | * Start a new data file. |
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452 | * |
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453 | * @access public |
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454 | * @return The success value of both xml_serializer->serialize() and _filePutContents() |
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455 | * @author Quinn Comendant <quinn@strangecode.com> |
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456 | * @since 11 Apr 2006 20:53:42 |
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457 | */ |
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458 | function _initializeDataFile() |
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459 | { |
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460 | $app =& App::getInstance(); |
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461 | |
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462 | $app->logMsg(sprintf('Initializing data file: %s', $this->_data_file), LOG_INFO, __FILE__, __LINE__); |
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463 | $xml_file_contents = $this->xml_serializer->serialize($this->_data); |
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464 | return $this->_filePutContents($this->_data_file, $xml_file_contents); |
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465 | } |
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466 | |
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467 | /** |
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468 | * Saves the POSTed data by overwriting the pedit variables in the |
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469 | * current file. |
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470 | * |
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471 | * @access private |
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472 | * @return bool False if unauthorized or on failure. True on success. |
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473 | */ |
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474 | function _writeData() |
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475 | { |
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476 | $app =& App::getInstance(); |
---|
477 | |
---|
478 | if (!$this->_authorized) { |
---|
479 | return false; |
---|
480 | } |
---|
481 | if ($this->_fileHash() != getFormData('file_hash')) { |
---|
482 | // Posted data is NOT for this file! |
---|
483 | $app->logMsg(sprintf('File_hash does not match current file.', null), LOG_WARNING, __FILE__, __LINE__); |
---|
484 | return false; |
---|
485 | } |
---|
486 | |
---|
487 | // Scrub incoming data. Escape tags? |
---|
488 | $new_data = getFormData('_pedit_data'); |
---|
489 | |
---|
490 | if (is_array($new_data) && !empty($new_data)) { |
---|
491 | // Make certain a version is created. |
---|
492 | $this->_deleteOldVersions(); |
---|
493 | if (!$this->_createVersion()) { |
---|
494 | $app->logMsg(sprintf('Failed creating new version of file.', null), LOG_NOTICE, __FILE__, __LINE__); |
---|
495 | return false; |
---|
496 | } |
---|
497 | |
---|
498 | // Collect posted data that is already specified in _data (by set()). |
---|
499 | foreach ($new_data as $name => $content) { |
---|
500 | if (isset($this->_data[$name])) { |
---|
501 | $this->_data[$name]['content'] = $content; |
---|
502 | } |
---|
503 | } |
---|
504 | |
---|
505 | if (is_array($this->_data) && !empty($this->_data)) { |
---|
506 | $xml_file_contents = $this->xml_serializer->serialize($this->_data); |
---|
507 | return $this->_filePutContents($this->_data_file, $xml_file_contents); |
---|
508 | } |
---|
509 | } |
---|
510 | } |
---|
511 | |
---|
512 | /* |
---|
513 | * Writes content to the specified file. |
---|
514 | * |
---|
515 | * @access public |
---|
516 | * @param string $filename Path to file. |
---|
517 | * @param string $content Data to write into file. |
---|
518 | * @return bool Success or failure. |
---|
519 | * @author Quinn Comendant <quinn@strangecode.com> |
---|
520 | * @since 11 Apr 2006 22:48:30 |
---|
521 | */ |
---|
522 | function _filePutContents($filename, $content) |
---|
523 | { |
---|
524 | $app =& App::getInstance(); |
---|
525 | |
---|
526 | // Ensure requested filename is within the pedit data dir. |
---|
527 | if (strpos($filename, $this->getParam('data_dir')) === false) { |
---|
528 | $app->logMsg(sprintf('Failed writing file outside pedit _data_dir: %s', $filename), LOG_ERR, __FILE__, __LINE__); |
---|
529 | return false; |
---|
530 | } |
---|
531 | |
---|
532 | // Recursively create directories. |
---|
533 | $subdirs = preg_split('!/!', str_replace($this->getParam('data_dir'), '', dirname($filename)), -1, PREG_SPLIT_NO_EMPTY); |
---|
534 | // Start with the pedit _data_dir base. |
---|
535 | $curr_path = $this->getParam('data_dir'); |
---|
536 | while (!empty($subdirs)) { |
---|
537 | $curr_path .= '/' . array_shift($subdirs); |
---|
538 | if (!is_dir($curr_path)) { |
---|
539 | if (!mkdir($curr_path)) { |
---|
540 | $app->logMsg(sprintf('Failed mkdir: %s', $curr_path), LOG_ERR, __FILE__, __LINE__); |
---|
541 | return false; |
---|
542 | } |
---|
543 | } |
---|
544 | } |
---|
545 | |
---|
546 | // Open file for writing and truncate to zero length. |
---|
547 | if ($fp = fopen($filename, 'w')) { |
---|
548 | if (flock($fp, LOCK_EX)) { |
---|
549 | fwrite($fp, $content, strlen($content)); |
---|
550 | flock($fp, LOCK_UN); |
---|
551 | } else { |
---|
552 | $app->logMsg(sprintf('Could not lock file for writing: %s', $filename), LOG_ERR, __FILE__, __LINE__); |
---|
553 | return false; |
---|
554 | } |
---|
555 | fclose($fp); |
---|
556 | // Success! |
---|
557 | $app->logMsg(sprintf('Wrote to file: %s', $filename), LOG_DEBUG, __FILE__, __LINE__); |
---|
558 | return true; |
---|
559 | } else { |
---|
560 | $app->logMsg(sprintf('Could not open file for writing: %s', $filename), LOG_ERR, __FILE__, __LINE__); |
---|
561 | return false; |
---|
562 | } |
---|
563 | } |
---|
564 | |
---|
565 | /** |
---|
566 | * Makes a copy of the current file with the unix timestamp appended to the |
---|
567 | * filename. |
---|
568 | * |
---|
569 | * @access private |
---|
570 | * @return bool False on failure. True on success. |
---|
571 | */ |
---|
572 | function _createVersion() |
---|
573 | { |
---|
574 | $app =& App::getInstance(); |
---|
575 | |
---|
576 | if (!$this->_authorized) { |
---|
577 | return false; |
---|
578 | } |
---|
579 | if ($this->_fileHash() != getFormData('file_hash')) { |
---|
580 | // Posted data is NOT for this file! |
---|
581 | $app->logMsg(sprintf('File_hash does not match current file.', null), LOG_ERR, __FILE__, __LINE__); |
---|
582 | return false; |
---|
583 | } |
---|
584 | |
---|
585 | // Ensure current data file exists. |
---|
586 | if (!file_exists($this->_data_file)) { |
---|
587 | $app->logMsg(sprintf('Data file does not yet exist: %s', $this->_data_file), LOG_NOTICE, __FILE__, __LINE__); |
---|
588 | return false; |
---|
589 | } |
---|
590 | |
---|
591 | // Do the actual copy. File naming scheme must be consistent! |
---|
592 | // filename.php.xml becomes filename.php__1124124128.xml |
---|
593 | $version_file = sprintf('%s__%s.xml', preg_replace('/\.xml$/', '', $this->_data_file), time()); |
---|
594 | if (!copy($this->_data_file, $version_file)) { |
---|
595 | $app->logMsg(sprintf('Failed copying new version: %s -> %s', $this->_data_file, $version_file), LOG_ERR, __FILE__, __LINE__); |
---|
596 | return false; |
---|
597 | } |
---|
598 | |
---|
599 | return true; |
---|
600 | } |
---|
601 | |
---|
602 | /* |
---|
603 | * Delete all versions older than versions_min_days if there are more than versions_min_qty or 100. |
---|
604 | * |
---|
605 | * @access public |
---|
606 | * @return bool False on failure. True on success. |
---|
607 | * @author Quinn Comendant <quinn@strangecode.com> |
---|
608 | * @since 12 Apr 2006 11:08:11 |
---|
609 | */ |
---|
610 | function _deleteOldVersions() |
---|
611 | { |
---|
612 | $app =& App::getInstance(); |
---|
613 | |
---|
614 | $version_files = $this->_getVersions(); |
---|
615 | if (is_array($version_files) && sizeof($version_files) > $this->getParam('versions_min_qty')) { |
---|
616 | // Pop oldest ones off bottom of array. |
---|
617 | $oldest = array_pop($version_files); |
---|
618 | // Loop while minimum X qty && minimum X days worth but never more than 100 qty. |
---|
619 | while ((sizeof($version_files) > $this->getParam('versions_min_qty') |
---|
620 | && $oldest['unixtime'] < mktime(date('H'), date('i'), date('s'), date('m'), date('d') - $this->getParam('versions_min_days'), date('Y'))) |
---|
621 | || sizeof($version_files) > 100) { |
---|
622 | $del_file = dirname($this->_data_file) . '/' . $oldest['filename']; |
---|
623 | if (!unlink($del_file)) { |
---|
624 | $app->logMsg(sprintf('Failed deleting version: %s', $del_file), LOG_ERR, __FILE__, __LINE__); |
---|
625 | } |
---|
626 | $oldest = array_pop($version_files); |
---|
627 | } |
---|
628 | } |
---|
629 | } |
---|
630 | |
---|
631 | /** |
---|
632 | * Returns an array of all archived versions of the current file, |
---|
633 | * sorted with newest versions at the top of the array. |
---|
634 | * |
---|
635 | * @access private |
---|
636 | * @return array Array of versions. |
---|
637 | */ |
---|
638 | function _getVersions() |
---|
639 | { |
---|
640 | $version_files = array(); |
---|
641 | $dir_handle = opendir(dirname($this->_data_file)); |
---|
642 | $curr_file_preg_pattern = sprintf('/^%s__(\d+).xml$/', preg_quote(basename($_SERVER['PHP_SELF']))); |
---|
643 | while ($dir_handle && ($version_file = readdir($dir_handle)) !== false) { |
---|
644 | if (!preg_match('/^\./', $version_file) && !is_dir($version_file) && preg_match($curr_file_preg_pattern, $version_file, $time)) { |
---|
645 | $version_files[] = array( |
---|
646 | 'filename' => $version_file, |
---|
647 | 'unixtime' => $time[1], |
---|
648 | 'filesize' => filesize(dirname($this->_data_file) . '/' . $version_file) |
---|
649 | ); |
---|
650 | } |
---|
651 | } |
---|
652 | |
---|
653 | if (is_array($version_files) && !empty($version_files)) { |
---|
654 | array_multisort($version_files, SORT_DESC); |
---|
655 | return $version_files; |
---|
656 | } else { |
---|
657 | return array(); |
---|
658 | } |
---|
659 | } |
---|
660 | |
---|
661 | /** |
---|
662 | * Makes a version backup of the current file, then copies the specified |
---|
663 | * archived version over the current file. |
---|
664 | * |
---|
665 | * @access private |
---|
666 | * @param string $version Unix timestamp of archived version to restore. |
---|
667 | * @return bool False on failure. True on success. |
---|
668 | */ |
---|
669 | function _restoreVersion($version) |
---|
670 | { |
---|
671 | $app =& App::getInstance(); |
---|
672 | |
---|
673 | if (!$this->_authorized) { |
---|
674 | return false; |
---|
675 | } |
---|
676 | |
---|
677 | // The file to restore. |
---|
678 | $version_file = sprintf('%s__%s.xml', preg_replace('/\.xml$/', '', $this->_data_file), $version); |
---|
679 | |
---|
680 | // Ensure specified version exists. |
---|
681 | if (!file_exists($version_file)) { |
---|
682 | $app->logMsg(sprintf('Cannot restore non-existant file: %s', $version_file), LOG_NOTICE, __FILE__, __LINE__); |
---|
683 | return false; |
---|
684 | } |
---|
685 | |
---|
686 | // Make certain a version is created. |
---|
687 | if (!$this->_createVersion()) { |
---|
688 | $app->logMsg(sprintf('Failed creating new version of file.', null), LOG_ERR, __FILE__, __LINE__); |
---|
689 | return false; |
---|
690 | } |
---|
691 | |
---|
692 | // Do the actual copy. |
---|
693 | if (!copy($version_file, $this->_data_file)) { |
---|
694 | $app->logMsg(sprintf('Failed copying old version: %s -> %s', $version_file, $this->_data_file), LOG_ERR, __FILE__, __LINE__); |
---|
695 | return false; |
---|
696 | } |
---|
697 | |
---|
698 | // Success! |
---|
699 | $app->raiseMsg(sprintf(_("Page has been restored to version %s."), $version), MSG_SUCCESS, __FILE__, __LINE__); |
---|
700 | return true; |
---|
701 | } |
---|
702 | |
---|
703 | } // End class. |
---|
704 | |
---|
705 | ?> |
---|