1 | <?php |
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2 | // +-----------------------------------------------------------------------+ |
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3 | // | Piwigo - a PHP based picture gallery | |
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4 | // +-----------------------------------------------------------------------+ |
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5 | // | Copyright(C) 2008 Piwigo Team http://piwigo.org | |
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6 | // | Copyright(C) 2003-2008 PhpWebGallery Team http://phpwebgallery.net | |
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7 | // | Copyright(C) 2002-2003 Pierrick LE GALL http://le-gall.net/pierrick | |
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8 | // +-----------------------------------------------------------------------+ |
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9 | // | This program is free software; you can redistribute it and/or modify | |
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10 | // | it under the terms of the GNU General Public License as published by | |
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11 | // | the Free Software Foundation | |
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12 | // | | |
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13 | // | This program is distributed in the hope that it will be useful, but | |
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14 | // | WITHOUT ANY WARRANTY; without even the implied warranty of | |
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15 | // | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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16 | // | General Public License for more details. | |
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17 | // | | |
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18 | // | You should have received a copy of the GNU General Public License | |
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19 | // | along with this program; if not, write to the Free Software | |
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20 | // | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, | |
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21 | // | USA. | |
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22 | // +-----------------------------------------------------------------------+ |
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23 | |
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24 | class plugins |
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25 | { |
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26 | var $fs_plugins = array(); |
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27 | var $db_plugins_by_id = array(); |
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28 | var $server_plugins; |
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29 | |
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30 | /** |
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31 | * Initialize $fs_plugins and $db_plugins_by_id |
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32 | */ |
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33 | function plugins() |
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34 | { |
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35 | $this->get_fs_plugins(); |
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36 | |
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37 | foreach (get_db_plugins() as $db_plugin) |
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38 | { |
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39 | $this->db_plugins_by_id[$db_plugin['id']] = $db_plugin; |
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40 | } |
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41 | } |
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42 | |
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43 | /** |
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44 | * Perform requested actions |
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45 | * @param string - action |
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46 | * @param string - plugin id |
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47 | * @param array - errors |
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48 | */ |
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49 | function perform_action($action, $plugin_id) |
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50 | { |
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51 | if (isset($this->db_plugins_by_id[$plugin_id])) |
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52 | { |
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53 | $crt_db_plugin = $this->db_plugins_by_id[$plugin_id]; |
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54 | } |
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55 | $file_to_include = PHPWG_PLUGINS_PATH . $plugin_id . '/maintain.inc.php'; |
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56 | |
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57 | $errors = array(); |
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58 | |
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59 | switch ($action) |
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60 | { |
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61 | case 'install': |
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62 | if (!empty($crt_db_plugin)) |
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63 | { |
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64 | array_push($errors, 'CANNOT INSTALL - ALREADY INSTALLED'); |
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65 | break; |
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66 | } |
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67 | if (!isset($this->fs_plugins[$plugin_id])) |
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68 | { |
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69 | array_push($errors, 'CANNOT INSTALL - NO SUCH PLUGIN'); |
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70 | break; |
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71 | } |
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72 | if (file_exists($file_to_include)) |
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73 | { |
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74 | include_once($file_to_include); |
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75 | if (function_exists('plugin_install')) |
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76 | { |
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77 | plugin_install($plugin_id, $this->fs_plugins[$plugin_id]['version'], $errors); |
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78 | } |
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79 | } |
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80 | if (empty($errors)) |
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81 | { |
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82 | $query = ' |
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83 | INSERT INTO ' . PLUGINS_TABLE . ' (id,version) VALUES ("' |
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84 | . $plugin_id . '","' . $this->fs_plugins[$plugin_id]['version'] . '" |
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85 | )'; |
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86 | pwg_query($query); |
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87 | } |
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88 | break; |
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89 | |
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90 | case 'activate': |
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91 | if (!isset($crt_db_plugin)) |
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92 | { |
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93 | array_push($errors, 'CANNOT ACTIVATE - NOT INSTALLED'); |
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94 | break; |
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95 | } |
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96 | if ($crt_db_plugin['state'] != 'inactive') |
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97 | { |
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98 | array_push($errors, 'invalid current state ' . $crt_db_plugin['state']); |
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99 | break; |
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100 | } |
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101 | if (file_exists($file_to_include)) |
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102 | { |
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103 | include_once($file_to_include); |
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104 | if (function_exists('plugin_activate')) |
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105 | { |
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106 | plugin_activate($plugin_id, $crt_db_plugin['version'], $errors); |
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107 | } |
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108 | } |
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109 | if (empty($errors)) |
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110 | { |
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111 | $query = ' |
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112 | UPDATE ' . PLUGINS_TABLE . ' SET state="active" WHERE id="' . $plugin_id . '"'; |
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113 | pwg_query($query); |
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114 | } |
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115 | break; |
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116 | |
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117 | case 'deactivate': |
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118 | if (!isset($crt_db_plugin)) |
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119 | { |
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120 | die ('CANNOT DEACTIVATE - NOT INSTALLED'); |
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121 | } |
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122 | if ($crt_db_plugin['state'] != 'active') |
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123 | { |
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124 | die('invalid current state ' . $crt_db_plugin['state']); |
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125 | } |
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126 | $query = ' |
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127 | UPDATE ' . PLUGINS_TABLE . ' SET state="inactive" WHERE id="' . $plugin_id . '"'; |
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128 | pwg_query($query); |
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129 | if (file_exists($file_to_include)) |
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130 | { |
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131 | include_once($file_to_include); |
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132 | if (function_exists('plugin_deactivate')) |
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133 | { |
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134 | plugin_deactivate($plugin_id); |
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135 | } |
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136 | } |
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137 | break; |
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138 | |
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139 | case 'uninstall': |
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140 | if (!isset($crt_db_plugin)) |
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141 | { |
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142 | die ('CANNOT UNINSTALL - NOT INSTALLED'); |
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143 | } |
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144 | $query = ' |
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145 | DELETE FROM ' . PLUGINS_TABLE . ' WHERE id="' . $plugin_id . '"'; |
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146 | pwg_query($query); |
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147 | if (file_exists($file_to_include)) |
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148 | { |
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149 | include_once($file_to_include); |
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150 | if (function_exists('plugin_uninstall')) |
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151 | { |
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152 | plugin_uninstall($plugin_id); |
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153 | } |
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154 | } |
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155 | break; |
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156 | |
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157 | case 'delete': |
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158 | if (!empty($crt_db_plugin)) |
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159 | { |
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160 | array_push($errors, 'CANNOT DELETE - PLUGIN IS INSTALLED'); |
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161 | break; |
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162 | } |
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163 | if (!isset($this->fs_plugins[$plugin_id])) |
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164 | { |
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165 | array_push($errors, 'CANNOT DELETE - NO SUCH PLUGIN'); |
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166 | break; |
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167 | } |
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168 | if (!$this->deltree(PHPWG_PLUGINS_PATH . $plugin_id)) |
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169 | { |
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170 | $this->send_to_trash(PHPWG_PLUGINS_PATH . $plugin_id); |
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171 | } |
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172 | break; |
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173 | } |
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174 | return $errors; |
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175 | } |
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176 | |
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177 | /** |
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178 | * Get plugins defined in the plugin directory |
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179 | */ |
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180 | function get_fs_plugins() |
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181 | { |
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182 | $dir = opendir(PHPWG_PLUGINS_PATH); |
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183 | while ($file = readdir($dir)) |
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184 | { |
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185 | if ($file!='.' and $file!='..') |
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186 | { |
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187 | $path = PHPWG_PLUGINS_PATH.$file; |
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188 | if (is_dir($path) and !is_link($path) |
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189 | and preg_match('/^[a-zA-Z0-9-_]+$/', $file ) |
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190 | and file_exists($path.'/main.inc.php') |
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191 | ) |
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192 | { |
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193 | $plugin = array( |
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194 | 'name'=>$file, |
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195 | 'version'=>'0', |
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196 | 'uri'=>'', |
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197 | 'description'=>'', |
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198 | 'author'=>'', |
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199 | ); |
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200 | $plg_data = implode( '', file($path.'/main.inc.php') ); |
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201 | |
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202 | if ( preg_match("|Plugin Name: (.*)|", $plg_data, $val) ) |
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203 | { |
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204 | $plugin['name'] = trim( $val[1] ); |
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205 | } |
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206 | if (preg_match("|Version: (.*)|", $plg_data, $val)) |
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207 | { |
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208 | $plugin['version'] = trim($val[1]); |
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209 | } |
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210 | if ( preg_match("|Plugin URI: (.*)|", $plg_data, $val) ) |
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211 | { |
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212 | $plugin['uri'] = trim($val[1]); |
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213 | } |
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214 | if ( preg_match("|Description: (.*)|", $plg_data, $val) ) |
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215 | { |
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216 | $plugin['description'] = trim($val[1]); |
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217 | } |
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218 | if ( preg_match("|Author: (.*)|", $plg_data, $val) ) |
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219 | { |
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220 | $plugin['author'] = trim($val[1]); |
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221 | } |
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222 | if ( preg_match("|Author URI: (.*)|", $plg_data, $val) ) |
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223 | { |
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224 | $plugin['author uri'] = trim($val[1]); |
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225 | } |
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226 | if (!empty($plugin['uri']) and strpos($plugin['uri'] , 'extension_view.php?eid=')) |
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227 | { |
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228 | list( , $extension) = explode('extension_view.php?eid=', $plugin['uri']); |
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229 | if (is_numeric($extension)) $plugin['extension'] = $extension; |
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230 | } |
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231 | // IMPORTANT SECURITY ! |
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232 | $plugin = array_map('htmlspecialchars', $plugin); |
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233 | $this->fs_plugins[$file] = $plugin; |
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234 | } |
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235 | } |
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236 | } |
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237 | closedir($dir); |
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238 | } |
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239 | |
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240 | /** |
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241 | * Sort fs_plugins |
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242 | */ |
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243 | function sort_fs_plugins($order='name') |
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244 | { |
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245 | switch ($order) |
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246 | { |
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247 | case 'name': |
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248 | uasort($this->fs_plugins, 'name_compare'); |
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249 | break; |
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250 | case 'status': |
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251 | $this->sort_plugins_by_state(); |
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252 | break; |
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253 | case 'author': |
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254 | uasort($this->fs_plugins, array($this, 'plugin_author_compare')); |
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255 | break; |
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256 | case 'id': |
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257 | uksort($this->fs_plugins, 'strcasecmp'); |
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258 | break; |
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259 | } |
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260 | } |
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261 | |
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262 | /** |
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263 | * Retrieve PEM server datas to $server_plugins |
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264 | */ |
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265 | function get_server_plugins($new=false) |
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266 | { |
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267 | foreach($this->fs_plugins as $fs_plugin) |
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268 | { |
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269 | if (isset($fs_plugin['extension'])) |
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270 | { |
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271 | $plugins_to_check[] = $fs_plugin['extension']; |
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272 | } |
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273 | } |
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274 | $url = PEM_URL . '/uptodate.php?version=' . rawurlencode(PHPWG_VERSION) . '&extensions=' . implode(',', $plugins_to_check); |
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275 | $url .= $new ? '&newext=Plugin' : ''; |
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276 | |
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277 | if (!empty($plugins_to_check) and $source = @file_get_contents($url)) |
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278 | { |
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279 | $this->server_plugins = @unserialize($source); |
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280 | } |
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281 | } |
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282 | |
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283 | /** |
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284 | * Sort $server_plugins |
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285 | */ |
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286 | function sort_server_plugins($order='date') |
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287 | { |
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288 | switch ($order) |
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289 | { |
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290 | case 'date': |
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291 | krsort($this->server_plugins); |
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292 | break; |
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293 | case 'revision': |
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294 | usort($this->server_plugins, array($this, 'extension_revision_compare')); |
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295 | break; |
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296 | case 'name': |
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297 | uasort($this->server_plugins, array($this, 'extension_name_compare')); |
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298 | break; |
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299 | case 'author': |
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300 | uasort($this->server_plugins, array($this, 'extension_author_compare')); |
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301 | break; |
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302 | } |
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303 | } |
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304 | |
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305 | /** |
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306 | * Extract plugin files from archive |
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307 | * @param string - install or upgrade |
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308 | * @param string - archive URL |
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309 | * @param string - destination path |
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310 | */ |
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311 | function extract_plugin_files($action, $source, $dest) |
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312 | { |
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313 | if ($archive = tempnam( PHPWG_PLUGINS_PATH, 'zip')) |
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314 | { |
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315 | if (@copy(PEM_URL . str_replace(' ', '%20', $source), $archive)) |
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316 | { |
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317 | include(PHPWG_ROOT_PATH.'admin/include/pclzip.lib.php'); |
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318 | $zip = new PclZip($archive); |
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319 | if ($list = $zip->listContent()) |
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320 | { |
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321 | foreach ($list as $file) |
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322 | { |
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323 | // we search main.inc.php in archive |
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324 | if (basename($file['filename']) == 'main.inc.php' |
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325 | and (!isset($main_filepath) |
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326 | or strlen($file['filename']) < strlen($main_filepath))) |
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327 | { |
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328 | $main_filepath = $file['filename']; |
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329 | } |
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330 | } |
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331 | if (isset($main_filepath)) |
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332 | { |
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333 | $root = dirname($main_filepath); // main.inc.php path in archive |
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334 | if ($action == 'upgrade') |
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335 | { |
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336 | $extract_path = PHPWG_PLUGINS_PATH.$dest; |
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337 | } |
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338 | else |
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339 | { |
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340 | $extract_path = PHPWG_PLUGINS_PATH |
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341 | . ($root == '.' ? 'extension_' . $dest : basename($root)); |
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342 | } |
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343 | if($result = $zip->extract(PCLZIP_OPT_PATH, $extract_path, |
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344 | PCLZIP_OPT_REMOVE_PATH, $root, |
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345 | PCLZIP_OPT_REPLACE_NEWER)) |
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346 | { |
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347 | foreach ($result as $file) |
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348 | { |
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349 | if ($file['stored_filename'] == $main_filepath) |
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350 | { |
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351 | $status = $file['status']; |
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352 | break; |
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353 | } |
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354 | } |
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355 | } |
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356 | else $status = 'extract_error'; |
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357 | } |
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358 | else $status = 'archive_error'; |
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359 | } |
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360 | else $status = 'archive_error'; |
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361 | } |
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362 | else $status = 'dl_archive_error'; |
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363 | } |
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364 | else $status = 'temp_path_error'; |
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365 | |
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366 | @unlink($archive); |
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367 | return $status; |
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368 | } |
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369 | |
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370 | /** |
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371 | * delete $path directory |
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372 | * @param string - path |
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373 | */ |
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374 | function deltree($path) |
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375 | { |
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376 | if (is_dir($path)) |
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377 | { |
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378 | $fh = opendir($path); |
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379 | while ($file = readdir($fh)) |
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380 | { |
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381 | if ($file != '.' and $file != '..') |
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382 | { |
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383 | $pathfile = $path . '/' . $file; |
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384 | if (is_dir($pathfile)) |
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385 | { |
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386 | $this->deltree($pathfile); |
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387 | } |
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388 | else |
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389 | { |
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390 | @unlink($pathfile); |
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391 | } |
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392 | } |
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393 | } |
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394 | closedir($fh); |
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395 | return @rmdir($path); |
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396 | } |
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397 | } |
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398 | |
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399 | /** |
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400 | * send $path to trash directory |
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401 | * @param string - path |
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402 | */ |
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403 | function send_to_trash($path) |
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404 | { |
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405 | $trash_path = PHPWG_PLUGINS_PATH . 'trash'; |
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406 | if (!is_dir($trash_path)) |
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407 | { |
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408 | @mkdir($trash_path); |
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409 | $file = @fopen($trash_path . '/.htaccess', 'w'); |
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410 | @fwrite($file, 'deny from all'); |
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411 | @fclose($file); |
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412 | } |
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413 | while ($r = $trash_path . '/' . md5(uniqid(rand(), true))) |
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414 | { |
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415 | if (!is_dir($r)) |
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416 | { |
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417 | @rename($path, $r); |
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418 | break; |
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419 | } |
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420 | } |
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421 | } |
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422 | |
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423 | /** |
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424 | * Sort functions |
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425 | */ |
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426 | function plugin_version_compare($a, $b) |
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427 | { |
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428 | $pattern = array('/([a-z])/ei', '/\.+/', '/\.\Z|\A\./'); |
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429 | $replacement = array( "'.'.intval('\\1', 36).'.'", '.', ''); |
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430 | |
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431 | $array = preg_replace($pattern, $replacement, array($a['version'], $b['version'])); |
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432 | |
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433 | return version_compare($array[0], $array[1], '>='); |
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434 | } |
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435 | |
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436 | function extension_revision_compare($a, $b) |
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437 | { |
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438 | if ($a['date'] < $b['date']) return 1; |
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439 | else return -1; |
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440 | } |
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441 | |
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442 | function extension_name_compare($a, $b) |
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443 | { |
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444 | return strcmp(strtolower($a['ext_name']), strtolower($b['ext_name'])); |
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445 | } |
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446 | |
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447 | function extension_author_compare($a, $b) |
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448 | { |
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449 | $r = strcasecmp($a['author'], $b['author']); |
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450 | if ($r == 0) return $this->extension_name_compare($a, $b); |
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451 | else return $r; |
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452 | } |
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453 | |
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454 | function plugin_author_compare($a, $b) |
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455 | { |
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456 | $r = strcasecmp($a['author'], $b['author']); |
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457 | if ($r == 0) return name_compare($a, $b); |
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458 | else return $r; |
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459 | } |
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460 | |
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461 | function sort_plugins_by_state() |
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462 | { |
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463 | uasort($this->fs_plugins, 'name_compare'); |
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464 | |
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465 | $active_plugins = array(); |
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466 | $inactive_plugins = array(); |
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467 | $not_installed = array(); |
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468 | |
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469 | foreach($this->fs_plugins as $plugin_id => $plugin) |
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470 | { |
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471 | if (isset($this->db_plugins_by_id[$plugin_id])) |
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472 | { |
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473 | $this->db_plugins_by_id[$plugin_id]['state'] == 'active' ? |
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474 | $active_plugins[$plugin_id] = $plugin : $inactive_plugins[$plugin_id] = $plugin; |
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475 | } |
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476 | else |
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477 | { |
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478 | $not_installed[$plugin_id] = $plugin; |
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479 | } |
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480 | } |
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481 | $this->fs_plugins = $active_plugins + $inactive_plugins + $not_installed; |
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482 | } |
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483 | } |
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484 | ?> |
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