1 | <?php |
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2 | // +-----------------------------------------------------------------------+ |
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3 | // | PhpWebGallery - a PHP based picture gallery | |
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4 | // | Copyright (C) 2002-2003 Pierrick LE GALL - pierrick@phpwebgallery.net | |
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5 | // | Copyright (C) 2003-2004 PhpWebGallery Team - http://phpwebgallery.net | |
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6 | // +-----------------------------------------------------------------------+ |
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7 | // | branch : BSF (Best So Far) |
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8 | // | file : $RCSfile$ |
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9 | // | last update : $Date: 2004-12-05 21:28:40 +0000 (Sun, 05 Dec 2004) $ |
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10 | // | last modifier : $Author: plg $ |
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11 | // | revision : $Revision: 635 $ |
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12 | // +-----------------------------------------------------------------------+ |
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13 | // | This program is free software; you can redistribute it and/or modify | |
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14 | // | it under the terms of the GNU General Public License as published by | |
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15 | // | the Free Software Foundation | |
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16 | // | | |
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17 | // | This program is distributed in the hope that it will be useful, but | |
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18 | // | WITHOUT ANY WARRANTY; without even the implied warranty of | |
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19 | // | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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20 | // | General Public License for more details. | |
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21 | // | | |
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22 | // | You should have received a copy of the GNU General Public License | |
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23 | // | along with this program; if not, write to the Free Software | |
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24 | // | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, | |
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25 | // | USA. | |
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26 | // +-----------------------------------------------------------------------+ |
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27 | |
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28 | include(PHPWG_ROOT_PATH.'admin/include/functions_metadata.php'); |
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29 | |
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30 | $tab_ext_create_TN = array ( 'jpg', 'png', 'JPG', 'PNG' ); |
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31 | |
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32 | // is_image returns true if the given $filename (including the path) is a |
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33 | // picture according to its format and its extension. |
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34 | // As GD library can only generate pictures from jpeg and png files, if you |
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35 | // ask if the filename is an image for thumbnail creation (second parameter |
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36 | // set to true), the only authorized formats are jpeg and png. |
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37 | function is_image( $filename, $create_thumbnail = false ) |
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38 | { |
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39 | global $conf, $tab_ext_create_TN; |
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40 | |
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41 | if (is_file($filename) |
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42 | and in_array(get_extension($filename), $conf['picture_ext'])) |
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43 | { |
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44 | $size = getimagesize( $filename ); |
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45 | // $size[2] == 1 means GIF |
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46 | // $size[2] == 2 means JPG |
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47 | // $size[2] == 3 means PNG |
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48 | if ( !$create_thumbnail ) |
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49 | { |
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50 | if ( in_array( get_extension( $filename ), $conf['picture_ext'] ) |
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51 | and ( $size[2] == 1 or $size[2] == 2 or $size[2] == 3 ) ) |
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52 | { |
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53 | return true; |
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54 | } |
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55 | } |
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56 | else |
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57 | { |
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58 | if ( in_array( get_extension( $filename ), $tab_ext_create_TN ) |
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59 | and ( $size[2] == 2 or $size[2] == 3 ) ) |
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60 | { |
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61 | return true; |
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62 | } |
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63 | } |
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64 | } |
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65 | return false; |
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66 | } |
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67 | |
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68 | /** |
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69 | * returns an array with all picture files according to $conf['file_ext'] |
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70 | * |
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71 | * @param string $dir |
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72 | * @return array |
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73 | */ |
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74 | function get_pwg_files($dir) |
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75 | { |
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76 | global $conf; |
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77 | |
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78 | $pictures = array(); |
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79 | if ($opendir = opendir($dir)) |
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80 | { |
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81 | while ($file = readdir($opendir)) |
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82 | { |
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83 | if (in_array(get_extension($file), $conf['file_ext'])) |
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84 | { |
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85 | array_push($pictures, $file); |
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86 | } |
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87 | } |
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88 | } |
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89 | return $pictures; |
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90 | } |
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91 | |
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92 | /** |
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93 | * returns an array with all thumbnails according to $conf['picture_ext'] |
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94 | * and $conf['prefix_thumbnail'] |
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95 | * |
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96 | * @param string $dir |
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97 | * @return array |
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98 | */ |
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99 | function get_thumb_files($dir) |
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100 | { |
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101 | global $conf; |
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102 | |
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103 | $prefix_length = strlen($conf['prefix_thumbnail']); |
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104 | |
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105 | $thumbnails = array(); |
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106 | if ($opendir = @opendir($dir.'/thumbnail')) |
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107 | { |
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108 | while ($file = readdir($opendir)) |
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109 | { |
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110 | if (in_array(get_extension($file), $conf['picture_ext']) |
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111 | and substr($file, 0, $prefix_length) == $conf['prefix_thumbnail']) |
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112 | { |
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113 | array_push($thumbnails, $file); |
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114 | } |
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115 | } |
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116 | } |
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117 | return $thumbnails; |
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118 | } |
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119 | |
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120 | /** |
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121 | * returns an array with representative picture files of a directory |
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122 | * according to $conf['picture_ext'] |
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123 | * |
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124 | * @param string $dir |
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125 | * @return array |
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126 | */ |
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127 | function get_representative_files($dir) |
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128 | { |
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129 | global $conf; |
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130 | |
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131 | $pictures = array(); |
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132 | if ($opendir = @opendir($dir.'/pwg_representative')) |
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133 | { |
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134 | while ($file = readdir($opendir)) |
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135 | { |
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136 | if (in_array(get_extension($file), $conf['picture_ext'])) |
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137 | { |
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138 | array_push($pictures, $file); |
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139 | } |
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140 | } |
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141 | } |
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142 | return $pictures; |
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143 | } |
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144 | |
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145 | function TN_exists( $dir, $file ) |
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146 | { |
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147 | global $conf; |
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148 | |
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149 | $filename = get_filename_wo_extension( $file ); |
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150 | foreach ( $conf['picture_ext'] as $ext ) { |
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151 | $test = $dir.'/thumbnail/'.$conf['prefix_thumbnail'].$filename.'.'.$ext; |
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152 | if ( is_file ( $test ) ) |
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153 | { |
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154 | return $ext; |
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155 | } |
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156 | } |
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157 | return false; |
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158 | } |
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159 | |
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160 | |
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161 | // The function delete_site deletes a site and call the function |
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162 | // delete_categories for each primary category of the site |
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163 | function delete_site( $id ) |
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164 | { |
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165 | // destruction of the categories of the site |
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166 | $query = ' |
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167 | SELECT id |
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168 | FROM '.CATEGORIES_TABLE.' |
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169 | WHERE site_id = '.$id.' |
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170 | ;'; |
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171 | $result = pwg_query($query); |
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172 | $category_ids = array(); |
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173 | while ($row = mysql_fetch_array($result)) |
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174 | { |
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175 | array_push($category_ids, $row['id']); |
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176 | } |
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177 | delete_categories($category_ids); |
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178 | |
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179 | // destruction of the site |
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180 | $query = ' |
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181 | DELETE FROM '.SITES_TABLE.' |
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182 | WHERE id = '.$id.' |
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183 | ;'; |
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184 | pwg_query($query); |
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185 | } |
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186 | |
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187 | |
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188 | // The function delete_categories deletes the categories identified by the |
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189 | // (numeric) key of the array $ids. It also deletes (in the database) : |
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190 | // - all the elements of the category (delete_elements, see further) |
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191 | // - all the links between elements and this category |
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192 | // - all the restrictions linked to the category |
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193 | // The function works recursively. |
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194 | function delete_categories($ids) |
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195 | { |
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196 | global $counts; |
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197 | |
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198 | if (count($ids) == 0) |
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199 | { |
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200 | return; |
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201 | } |
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202 | |
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203 | // destruction of all the related elements |
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204 | $query = ' |
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205 | SELECT id |
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206 | FROM '.IMAGES_TABLE.' |
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207 | WHERE storage_category_id IN ('.implode(',', $ids).') |
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208 | ;'; |
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209 | $result = pwg_query($query); |
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210 | $element_ids = array(); |
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211 | while ($row = mysql_fetch_array($result)) |
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212 | { |
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213 | array_push($element_ids, $row['id']); |
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214 | } |
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215 | delete_elements($element_ids); |
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216 | |
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217 | // destruction of the links between images and this category |
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218 | $query = ' |
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219 | DELETE FROM '.IMAGE_CATEGORY_TABLE.' |
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220 | WHERE category_id IN ('.implode(',', $ids).') |
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221 | ;'; |
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222 | pwg_query($query); |
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223 | |
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224 | // destruction of the access linked to the category |
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225 | $query = ' |
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226 | DELETE FROM '.USER_ACCESS_TABLE.' |
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227 | WHERE cat_id IN ('.implode(',', $ids).') |
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228 | ;'; |
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229 | pwg_query($query); |
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230 | $query = ' |
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231 | DELETE FROM '.GROUP_ACCESS_TABLE.' |
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232 | WHERE cat_id IN ('.implode(',', $ids).') |
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233 | ;'; |
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234 | pwg_query($query); |
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235 | |
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236 | // destruction of the sub-categories |
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237 | $query = ' |
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238 | SELECT id |
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239 | FROM '.CATEGORIES_TABLE.' |
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240 | WHERE id_uppercat IN ('.implode(',', $ids).') |
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241 | ;'; |
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242 | $result = pwg_query($query); |
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243 | $subcat_ids = array(); |
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244 | while($row = mysql_fetch_array($result)) |
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245 | { |
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246 | array_push($subcat_ids, $row['id']); |
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247 | } |
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248 | if (count($subcat_ids) > 0) |
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249 | { |
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250 | delete_categories($subcat_ids); |
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251 | } |
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252 | |
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253 | // destruction of the category |
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254 | $query = ' |
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255 | DELETE FROM '.CATEGORIES_TABLE.' |
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256 | WHERE id IN ('.implode(',', $ids).') |
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257 | ;'; |
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258 | pwg_query($query); |
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259 | |
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260 | if (isset($counts['del_categories'])) |
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261 | { |
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262 | $counts['del_categories']+= count($ids); |
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263 | } |
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264 | } |
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265 | |
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266 | // The function delete_elements deletes the elements identified by the |
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267 | // (numeric) values of the array $ids. It also deletes (in the database) : |
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268 | // - all the comments related to elements |
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269 | // - all the links between categories and elements |
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270 | // - all the favorites associated to elements |
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271 | function delete_elements($ids) |
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272 | { |
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273 | global $counts; |
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274 | |
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275 | if (count($ids) == 0) |
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276 | { |
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277 | return; |
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278 | } |
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279 | |
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280 | // destruction of the comments on the image |
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281 | $query = ' |
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282 | DELETE FROM '.COMMENTS_TABLE.' |
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283 | WHERE image_id IN ( |
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284 | '.wordwrap(implode(', ', $ids), 80, "\n").') |
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285 | ;'; |
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286 | pwg_query($query); |
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287 | |
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288 | // destruction of the links between images and this category |
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289 | $query = ' |
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290 | DELETE FROM '.IMAGE_CATEGORY_TABLE.' |
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291 | WHERE image_id IN ( |
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292 | '.wordwrap(implode(', ', $ids), 80, "\n").') |
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293 | ;'; |
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294 | pwg_query($query); |
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295 | |
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296 | // destruction of the favorites associated with the picture |
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297 | $query = ' |
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298 | DELETE FROM '.FAVORITES_TABLE.' |
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299 | WHERE image_id IN ( |
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300 | '.wordwrap(implode(', ', $ids), 80, "\n").') |
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301 | ;'; |
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302 | pwg_query($query); |
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303 | |
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304 | // destruction of the rates associated to this element |
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305 | $query = ' |
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306 | DELETE FROM '.RATE_TABLE.' |
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307 | WHERE element_id IN ( |
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308 | '.wordwrap(implode(', ', $ids), 80, "\n").') |
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309 | ;'; |
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310 | pwg_query($query); |
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311 | |
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312 | // destruction of the image |
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313 | $query = ' |
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314 | DELETE FROM '.IMAGES_TABLE.' |
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315 | WHERE id IN ( |
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316 | '.wordwrap(implode(', ', $ids), 80, "\n").') |
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317 | ;'; |
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318 | pwg_query($query); |
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319 | |
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320 | if (isset($counts['del_elements'])) |
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321 | { |
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322 | $counts['del_elements']+= count($ids); |
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323 | } |
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324 | } |
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325 | |
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326 | // The delete_user function delete a user identified by the $user_id |
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327 | // It also deletes : |
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328 | // - all the access linked to this user |
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329 | // - all the links to any group |
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330 | // - all the favorites linked to this user |
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331 | // - all sessions linked to this user |
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332 | // - all categories informations linked to this user |
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333 | function delete_user( $user_id ) |
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334 | { |
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335 | // destruction of the access linked to the user |
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336 | $query = 'DELETE FROM '.PREFIX_TABLE.'user_access'; |
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337 | $query.= ' WHERE user_id = '.$user_id; |
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338 | $query.= ';'; |
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339 | pwg_query( $query ); |
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340 | |
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341 | // destruction of the group links for this user |
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342 | $query = 'DELETE FROM '.PREFIX_TABLE.'user_group'; |
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343 | $query.= ' WHERE user_id = '.$user_id; |
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344 | $query.= ';'; |
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345 | pwg_query( $query ); |
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346 | |
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347 | // destruction of the favorites associated with the user |
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348 | $query = 'DELETE FROM '.PREFIX_TABLE.'favorites'; |
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349 | $query.= ' WHERE user_id = '.$user_id; |
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350 | $query.= ';'; |
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351 | pwg_query( $query ); |
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352 | |
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353 | // destruction of the sessions linked with the user |
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354 | $query = 'DELETE FROM '.PREFIX_TABLE.'sessions'; |
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355 | $query.= ' WHERE user_id = '.$user_id; |
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356 | $query.= ';'; |
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357 | pwg_query( $query ); |
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358 | |
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359 | // destruction of the user |
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360 | $query = 'DELETE FROM '.USERS_TABLE; |
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361 | $query.= ' WHERE id = '.$user_id; |
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362 | $query.= ';'; |
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363 | pwg_query( $query ); |
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364 | } |
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365 | |
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366 | // delete_group deletes a group identified by its $group_id. |
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367 | // It also deletes : |
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368 | // - all the access linked to this group |
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369 | // - all the links between this group and any user |
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370 | function delete_group( $group_id ) |
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371 | { |
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372 | // destruction of the access linked to the group |
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373 | $query = 'DELETE FROM '.PREFIX_TABLE.'group_access'; |
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374 | $query.= ' WHERE group_id = '.$group_id; |
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375 | $query.= ';'; |
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376 | pwg_query( $query ); |
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377 | |
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378 | // synchronize all users linked to the group |
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379 | synchronize_group( $group_id ); |
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380 | |
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381 | // destruction of the users links for this group |
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382 | $query = 'DELETE FROM '.PREFIX_TABLE.'user_group'; |
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383 | $query.= ' WHERE group_id = '.$group_id; |
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384 | $query.= ';'; |
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385 | pwg_query( $query ); |
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386 | |
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387 | // destruction of the group |
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388 | $query = 'DELETE FROM '.PREFIX_TABLE.'groups'; |
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389 | $query.= ' WHERE id = '.$group_id; |
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390 | $query.= ';'; |
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391 | pwg_query( $query ); |
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392 | } |
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393 | |
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394 | // The check_favorites function deletes all the favorites of a user if he is |
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395 | // not allowed to see them (the category or an upper category is restricted |
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396 | // or invisible) |
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397 | function check_favorites( $user_id ) |
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398 | { |
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399 | $query = 'SELECT status,forbidden_categories'; |
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400 | $query.= ' FROM '.USERS_TABLE; |
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401 | $query.= ' WHERE id = '.$user_id; |
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402 | $query.= ';'; |
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403 | $row = mysql_fetch_array( pwg_query( $query ) ); |
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404 | $status = $row['status']; |
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405 | // retrieving all the restricted categories for this user |
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406 | if ( isset( $row['forbidden_categories'] ) ) |
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407 | $restricted_cat = explode( ',', $row['forbidden_categories'] ); |
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408 | else |
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409 | $restricted_cat = array(); |
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410 | // retrieving all the favorites for this user and comparing their |
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411 | // categories to the restricted categories |
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412 | $query = 'SELECT image_id FROM '.FAVORITES_TABLE; |
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413 | $query.= ' WHERE user_id = '.$user_id; |
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414 | $query.= ';'; |
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415 | $result = pwg_query ( $query ); |
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416 | while ( $row = mysql_fetch_array( $result ) ) |
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417 | { |
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418 | // for each picture, we have to check all the categories it belongs |
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419 | // to. Indeed if a picture belongs to category_1 and category_2 and that |
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420 | // category_2 is not restricted to the user, he can have the picture as |
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421 | // favorite. |
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422 | $query = 'SELECT DISTINCT(category_id) as category_id'; |
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423 | $query.= ' FROM '.PREFIX_TABLE.'image_category'; |
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424 | $query.= ' WHERE image_id = '.$row['image_id']; |
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425 | $query.= ';'; |
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426 | $picture_result = pwg_query( $query ); |
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427 | $picture_cat = array(); |
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428 | while ( $picture_row = mysql_fetch_array( $picture_result ) ) |
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429 | { |
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430 | array_push( $picture_cat, $picture_row['category_id'] ); |
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431 | } |
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432 | if ( count( array_diff( $picture_cat, $restricted_cat ) ) == 0 ) |
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433 | { |
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434 | $query = 'DELETE FROM '.FAVORITES_TABLE; |
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435 | $query.= ' WHERE image_id = '.$row['image_id']; |
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436 | $query.= ' AND user_id = '.$user_id; |
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437 | $query.= ';'; |
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438 | pwg_query( $query ); |
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439 | } |
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440 | } |
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441 | } |
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442 | |
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443 | /** |
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444 | * updates calculated informations about a set of categories : date_last and |
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445 | * nb_images. It also verifies that the representative picture is really |
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446 | * linked to the category. Optionnaly recursive. |
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447 | * |
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448 | * @param mixed category id |
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449 | * @param boolean recursive |
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450 | * @returns void |
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451 | */ |
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452 | function update_category($ids = 'all', $recursive = false) |
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453 | { |
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454 | // retrieving all categories to update |
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455 | $cat_ids = array(); |
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456 | |
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457 | $query = ' |
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458 | SELECT id |
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459 | FROM '.CATEGORIES_TABLE; |
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460 | if (is_array($ids)) |
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461 | { |
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462 | if ($recursive) |
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463 | { |
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464 | foreach ($ids as $num => $id) |
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465 | { |
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466 | if ($num == 0) |
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467 | { |
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468 | $query.= ' |
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469 | WHERE '; |
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470 | } |
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471 | else |
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472 | { |
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473 | $query.= ' |
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474 | OR '; |
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475 | } |
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476 | $query.= 'uppercats REGEXP \'(^|,)'.$id.'(,|$)\''; |
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477 | } |
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478 | } |
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479 | else |
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480 | { |
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481 | $query.= ' |
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482 | WHERE id IN ('.implode(',', $ids).')'; |
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483 | } |
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484 | } |
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485 | $query.= ' |
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486 | ;'; |
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487 | $result = pwg_query( $query ); |
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488 | while ( $row = mysql_fetch_array( $result ) ) |
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489 | { |
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490 | array_push($cat_ids, $row['id']); |
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491 | } |
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492 | $cat_ids = array_unique($cat_ids); |
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493 | |
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494 | if (count($cat_ids) == 0) |
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495 | { |
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496 | return false; |
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497 | } |
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498 | |
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499 | // calculate informations about categories retrieved |
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500 | $query = ' |
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501 | SELECT category_id, |
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502 | COUNT(image_id) AS nb_images, |
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503 | MAX(date_available) AS date_last |
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504 | FROM '.IMAGES_TABLE.' INNER JOIN '.IMAGE_CATEGORY_TABLE.' ON id = image_id |
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505 | WHERE category_id IN ('.implode(',', $cat_ids).') |
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506 | GROUP BY category_id |
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507 | '; |
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508 | $result = pwg_query($query); |
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509 | $datas = array(); |
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510 | while ( $row = mysql_fetch_array( $result ) ) |
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511 | { |
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512 | array_push($datas, array('id' => $row['category_id'], |
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513 | 'date_last' => $row['date_last'], |
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514 | 'nb_images' => $row['nb_images'])); |
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515 | } |
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516 | $fields = array('primary' => array('id'), |
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517 | 'update' => array('date_last', 'nb_images')); |
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518 | mass_updates(CATEGORIES_TABLE, $fields, $datas); |
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519 | |
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520 | $query = ' |
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521 | UPDATE '.CATEGORIES_TABLE.' |
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522 | SET representative_picture_id = NULL |
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523 | WHERE nb_images = 0 |
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524 | ;'; |
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525 | pwg_query($query); |
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526 | |
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527 | if (count($cat_ids) > 0) |
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528 | { |
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529 | $categories = array(); |
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530 | // find all categories where the setted representative is not possible |
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531 | $query = ' |
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532 | SELECT id |
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533 | FROM '.CATEGORIES_TABLE.' LEFT JOIN '.IMAGE_CATEGORY_TABLE.' |
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534 | ON id = category_id AND representative_picture_id = image_id |
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535 | WHERE representative_picture_id IS NOT NULL |
---|
536 | AND id IN ('.implode(',', $cat_ids).') |
---|
537 | AND category_id IS NULL |
---|
538 | ;'; |
---|
539 | $result = pwg_query($query); |
---|
540 | while ($row = mysql_fetch_array($result)) |
---|
541 | { |
---|
542 | array_push($categories, $row['id']); |
---|
543 | } |
---|
544 | // find categories with elements and with no representant |
---|
545 | $query = ' |
---|
546 | SELECT id |
---|
547 | FROM '.CATEGORIES_TABLE.' |
---|
548 | WHERE representative_picture_id IS NULL |
---|
549 | AND nb_images != 0 |
---|
550 | ;'; |
---|
551 | $result = pwg_query($query); |
---|
552 | while ($row = mysql_fetch_array($result)) |
---|
553 | { |
---|
554 | array_push($categories, $row['id']); |
---|
555 | } |
---|
556 | |
---|
557 | $categories = array_unique($categories); |
---|
558 | set_random_representant($categories); |
---|
559 | } |
---|
560 | } |
---|
561 | |
---|
562 | function check_date_format( $date ) |
---|
563 | { |
---|
564 | // date arrives at this format : DD/MM/YYYY |
---|
565 | @list($day,$month,$year) = explode( '/', $date ); |
---|
566 | return @checkdate( $month, $day, $year ); |
---|
567 | } |
---|
568 | |
---|
569 | function date_convert( $date ) |
---|
570 | { |
---|
571 | // date arrives at this format : DD/MM/YYYY |
---|
572 | // It must be transformed in YYYY-MM-DD |
---|
573 | list($day,$month,$year) = explode( '/', $date ); |
---|
574 | return $year.'-'.$month.'-'.$day; |
---|
575 | } |
---|
576 | |
---|
577 | function date_convert_back( $date ) |
---|
578 | { |
---|
579 | // date arrives at this format : YYYY-MM-DD |
---|
580 | // It must be transformed in DD/MM/YYYY |
---|
581 | if ( $date != '' ) |
---|
582 | { |
---|
583 | list($year,$month,$day) = explode( '-', $date ); |
---|
584 | return $day.'/'.$month.'/'.$year; |
---|
585 | } |
---|
586 | else |
---|
587 | { |
---|
588 | return ''; |
---|
589 | } |
---|
590 | } |
---|
591 | |
---|
592 | // get_keywords returns an array with relevant keywords found in the string |
---|
593 | // given in argument. Keywords must be separated by comma in this string. |
---|
594 | // keywords must : |
---|
595 | // - be longer or equal to 3 characters |
---|
596 | // - not contain ', " or blank characters |
---|
597 | // - unique in the string ("test,test" -> "test") |
---|
598 | function get_keywords( $keywords_string ) |
---|
599 | { |
---|
600 | $keywords = array(); |
---|
601 | |
---|
602 | $candidates = explode( ',', $keywords_string ); |
---|
603 | foreach ( $candidates as $candidate ) { |
---|
604 | if ( strlen($candidate) >= 3 and !preg_match( '/(\'|"|\s)/', $candidate ) ) |
---|
605 | array_push( $keywords, $candidate ); |
---|
606 | } |
---|
607 | |
---|
608 | return array_unique( $keywords ); |
---|
609 | } |
---|
610 | |
---|
611 | /** |
---|
612 | * returns an array with the ids of the restricted categories for the user |
---|
613 | * |
---|
614 | * Returns an array with the ids of the restricted categories for the |
---|
615 | * user. If the $check_invisible parameter is set to true, invisible |
---|
616 | * categorie are added to the restricted one in the array. |
---|
617 | * |
---|
618 | * @param int $user_id |
---|
619 | * @param string $user_status |
---|
620 | * @param bool $check_invisible |
---|
621 | * @param bool $use_groups |
---|
622 | * @return array |
---|
623 | */ |
---|
624 | function get_user_restrictions( $user_id, $user_status, |
---|
625 | $check_invisible, $use_groups = true ) |
---|
626 | { |
---|
627 | // 1. retrieving ids of private categories |
---|
628 | $query = 'SELECT id FROM '.CATEGORIES_TABLE; |
---|
629 | $query.= " WHERE status = 'private'"; |
---|
630 | $query.= ';'; |
---|
631 | $result = pwg_query( $query ); |
---|
632 | $privates = array(); |
---|
633 | while ( $row = mysql_fetch_array( $result ) ) |
---|
634 | { |
---|
635 | array_push( $privates, $row['id'] ); |
---|
636 | } |
---|
637 | // 2. retrieving all authorized categories for the user |
---|
638 | $authorized = array(); |
---|
639 | // 2.1. retrieving authorized categories thanks to personnal user |
---|
640 | // authorization |
---|
641 | $query = 'SELECT cat_id FROM '.USER_ACCESS_TABLE; |
---|
642 | $query.= ' WHERE user_id = '.$user_id; |
---|
643 | $query.= ';'; |
---|
644 | $result = pwg_query( $query ); |
---|
645 | while ( $row = mysql_fetch_array( $result ) ) |
---|
646 | { |
---|
647 | array_push( $authorized, $row['cat_id'] ); |
---|
648 | } |
---|
649 | // 2.2. retrieving authorized categories thanks to group authorization to |
---|
650 | // which the user is a member |
---|
651 | if ( $use_groups ) |
---|
652 | { |
---|
653 | $query = 'SELECT ga.cat_id'; |
---|
654 | $query.= ' FROM '.USER_GROUP_TABLE.' as ug'; |
---|
655 | $query.= ', '.GROUP_ACCESS_TABLE.' as ga'; |
---|
656 | $query.= ' WHERE ug.group_id = ga.group_id'; |
---|
657 | $query.= ' AND ug.user_id = '.$user_id; |
---|
658 | $query.= ';'; |
---|
659 | $result = pwg_query( $query ); |
---|
660 | while ( $row = mysql_fetch_array( $result ) ) |
---|
661 | { |
---|
662 | array_push( $authorized, $row['cat_id'] ); |
---|
663 | } |
---|
664 | $authorized = array_unique( $authorized ); |
---|
665 | } |
---|
666 | |
---|
667 | $forbidden = array(); |
---|
668 | foreach ( $privates as $private ) { |
---|
669 | if ( !in_array( $private, $authorized ) ) |
---|
670 | { |
---|
671 | array_push( $forbidden, $private ); |
---|
672 | } |
---|
673 | } |
---|
674 | |
---|
675 | if ( $check_invisible ) |
---|
676 | { |
---|
677 | // 3. adding to the restricted categories, the invisible ones |
---|
678 | if ( $user_status != 'admin' ) |
---|
679 | { |
---|
680 | $query = 'SELECT id FROM '.CATEGORIES_TABLE; |
---|
681 | $query.= " WHERE visible = 'false';"; |
---|
682 | $result = pwg_query( $query ); |
---|
683 | while ( $row = mysql_fetch_array( $result ) ) |
---|
684 | { |
---|
685 | array_push( $forbidden, $row['id'] ); |
---|
686 | } |
---|
687 | } |
---|
688 | } |
---|
689 | return array_unique( $forbidden ); |
---|
690 | } |
---|
691 | |
---|
692 | /** |
---|
693 | * updates the calculated data users.forbidden_categories, it includes |
---|
694 | * sub-categories of the direct forbidden categories |
---|
695 | * |
---|
696 | * @param nt $user_id |
---|
697 | * @return array |
---|
698 | */ |
---|
699 | function update_user_restrictions( $user_id ) |
---|
700 | { |
---|
701 | $restrictions = get_user_all_restrictions( $user_id ); |
---|
702 | |
---|
703 | // update the users.forbidden_categories in database |
---|
704 | $query = 'UPDATE '.USERS_TABLE; |
---|
705 | $query.= ' SET forbidden_categories = '; |
---|
706 | if ( count( $restrictions ) > 0 ) |
---|
707 | $query.= "'".implode( ',', $restrictions )."'"; |
---|
708 | else |
---|
709 | $query.= 'NULL'; |
---|
710 | $query .= ' WHERE id = '.$user_id; |
---|
711 | $query.= ';'; |
---|
712 | pwg_query( $query ); |
---|
713 | |
---|
714 | return $restrictions; |
---|
715 | } |
---|
716 | |
---|
717 | /** |
---|
718 | * returns all the restricted categories ids including sub-categories |
---|
719 | * |
---|
720 | * @param int $user_id |
---|
721 | * @return array |
---|
722 | */ |
---|
723 | function get_user_all_restrictions( $user_id ) |
---|
724 | { |
---|
725 | global $page; |
---|
726 | |
---|
727 | $query = 'SELECT status'; |
---|
728 | $query.= ' FROM '.USERS_TABLE; |
---|
729 | $query.= ' WHERE id = '.$user_id; |
---|
730 | $query.= ';'; |
---|
731 | $row = mysql_fetch_array( pwg_query( $query ) ); |
---|
732 | |
---|
733 | $base_restrictions=get_user_restrictions($user_id,$row['status'],true,true); |
---|
734 | |
---|
735 | $restrictions = $base_restrictions; |
---|
736 | foreach ( $base_restrictions as $category_id ) { |
---|
737 | echo $category_id.' is forbidden to user '.$user_id.'<br />'; |
---|
738 | $restrictions = |
---|
739 | array_merge( $restrictions, |
---|
740 | $page['plain_structure'][$category_id]['all_subcats_ids'] ); |
---|
741 | } |
---|
742 | |
---|
743 | return array_unique( $restrictions ); |
---|
744 | } |
---|
745 | |
---|
746 | // The function is_user_allowed returns : |
---|
747 | // - 0 : if the category is allowed with this $restrictions array |
---|
748 | // - 1 : if this category is not allowed |
---|
749 | // - 2 : if an uppercat category is not allowed |
---|
750 | // Note : the restrictions array must represent ONLY direct forbidden |
---|
751 | // categories, not all forbidden categories |
---|
752 | function is_user_allowed( $category_id, $restrictions ) |
---|
753 | { |
---|
754 | if ( in_array( $category_id, $restrictions ) ) return 1; |
---|
755 | |
---|
756 | $query = 'SELECT uppercats'; |
---|
757 | $query.= ' FROM '.CATEGORIES_TABLE; |
---|
758 | $query.= ' WHERE id = '.$category_id; |
---|
759 | $query.= ';'; |
---|
760 | $row = mysql_fetch_array( pwg_query( $query ) ); |
---|
761 | $uppercats = explode( ',', $row['uppercats'] ); |
---|
762 | foreach ( $uppercats as $category_id ) { |
---|
763 | if ( in_array( $category_id, $restrictions ) ) return 2; |
---|
764 | } |
---|
765 | |
---|
766 | // no restriction found : the user is allowed to access this category |
---|
767 | return 0; |
---|
768 | } |
---|
769 | |
---|
770 | /** |
---|
771 | * returns an array containing sub-directories which can be a category |
---|
772 | * |
---|
773 | * directories nammed "thumbnail", "pwg_high" or "pwg_representative" are |
---|
774 | * omitted |
---|
775 | * |
---|
776 | * @param string $basedir |
---|
777 | * @return array |
---|
778 | */ |
---|
779 | function get_category_directories( $basedir ) |
---|
780 | { |
---|
781 | $sub_dirs = array(); |
---|
782 | |
---|
783 | if ( $opendir = opendir( $basedir ) ) |
---|
784 | { |
---|
785 | while ( $file = readdir( $opendir ) ) |
---|
786 | { |
---|
787 | if ($file != '.' |
---|
788 | and $file != '..' |
---|
789 | and $file != 'thumbnail' |
---|
790 | and $file != 'pwg_high' |
---|
791 | and $file != 'pwg_representative' |
---|
792 | and is_dir($basedir.'/'.$file)) |
---|
793 | { |
---|
794 | array_push( $sub_dirs, $file ); |
---|
795 | } |
---|
796 | } |
---|
797 | } |
---|
798 | return $sub_dirs; |
---|
799 | } |
---|
800 | |
---|
801 | // my_error returns (or send to standard output) the message concerning the |
---|
802 | // error occured for the last mysql query. |
---|
803 | function my_error($header, $echo = true) |
---|
804 | { |
---|
805 | $error = $header.'<span style="font-weight:bold;">N°= '.mysql_errno(); |
---|
806 | $error.= ' -->> '.mysql_error()."</span><br /><br />\n"; |
---|
807 | if ($echo) |
---|
808 | { |
---|
809 | echo $error; |
---|
810 | } |
---|
811 | else |
---|
812 | { |
---|
813 | return $error; |
---|
814 | } |
---|
815 | } |
---|
816 | |
---|
817 | /** |
---|
818 | * inserts multiple lines in a table |
---|
819 | * |
---|
820 | * @param string table_name |
---|
821 | * @param array dbfields |
---|
822 | * @param array inserts |
---|
823 | * @return void |
---|
824 | */ |
---|
825 | function mass_inserts($table_name, $dbfields, $datas) |
---|
826 | { |
---|
827 | // inserts all found categories |
---|
828 | $query = ' |
---|
829 | INSERT INTO '.$table_name.' |
---|
830 | ('.implode(',', $dbfields).') |
---|
831 | VALUES'; |
---|
832 | foreach ($datas as $insert_id => $insert) |
---|
833 | { |
---|
834 | $query.= ' |
---|
835 | '; |
---|
836 | if ($insert_id > 0) |
---|
837 | { |
---|
838 | $query.= ','; |
---|
839 | } |
---|
840 | $query.= '('; |
---|
841 | foreach ($dbfields as $field_id => $dbfield) |
---|
842 | { |
---|
843 | if ($field_id > 0) |
---|
844 | { |
---|
845 | $query.= ','; |
---|
846 | } |
---|
847 | |
---|
848 | if (!isset($insert[$dbfield]) or $insert[$dbfield] == '') |
---|
849 | { |
---|
850 | $query.= 'NULL'; |
---|
851 | } |
---|
852 | else |
---|
853 | { |
---|
854 | $query.= "'".$insert[$dbfield]."'"; |
---|
855 | } |
---|
856 | } |
---|
857 | $query.=')'; |
---|
858 | } |
---|
859 | $query.= ' |
---|
860 | ;'; |
---|
861 | pwg_query($query); |
---|
862 | } |
---|
863 | |
---|
864 | /** |
---|
865 | * updates multiple lines in a table |
---|
866 | * |
---|
867 | * @param string table_name |
---|
868 | * @param array dbfields |
---|
869 | * @param array datas |
---|
870 | * @return void |
---|
871 | */ |
---|
872 | function mass_updates($tablename, $dbfields, $datas) |
---|
873 | { |
---|
874 | // depending on the MySQL version, we use the multi table update or N |
---|
875 | // update queries |
---|
876 | $query = 'SELECT VERSION() AS version;'; |
---|
877 | $row = mysql_fetch_array(pwg_query($query)); |
---|
878 | if (count($datas) < 10 or version_compare($row['version'],'4.0.4') < 0) |
---|
879 | { |
---|
880 | // MySQL is prior to version 4.0.4, multi table update feature is not |
---|
881 | // available |
---|
882 | foreach ($datas as $data) |
---|
883 | { |
---|
884 | $query = ' |
---|
885 | UPDATE '.$tablename.' |
---|
886 | SET '; |
---|
887 | foreach ($dbfields['update'] as $num => $key) |
---|
888 | { |
---|
889 | if ($num >= 1) |
---|
890 | { |
---|
891 | $query.= ",\n "; |
---|
892 | } |
---|
893 | $query.= $key.' = '; |
---|
894 | if (isset($data[$key])) |
---|
895 | { |
---|
896 | $query.= '\''.$data[$key].'\''; |
---|
897 | } |
---|
898 | else |
---|
899 | { |
---|
900 | $query.= 'NULL'; |
---|
901 | } |
---|
902 | } |
---|
903 | $query.= ' |
---|
904 | WHERE '; |
---|
905 | foreach ($dbfields['primary'] as $num => $key) |
---|
906 | { |
---|
907 | if ($num > 1) |
---|
908 | { |
---|
909 | $query.= ' AND '; |
---|
910 | } |
---|
911 | $query.= $key.' = \''.$data[$key].'\''; |
---|
912 | } |
---|
913 | $query.= ' |
---|
914 | ;'; |
---|
915 | pwg_query($query); |
---|
916 | } |
---|
917 | } |
---|
918 | else |
---|
919 | { |
---|
920 | // creation of the temporary table |
---|
921 | $query = ' |
---|
922 | DESCRIBE '.$tablename.' |
---|
923 | ;'; |
---|
924 | $result = pwg_query($query); |
---|
925 | $columns = array(); |
---|
926 | $all_fields = array_merge($dbfields['primary'], $dbfields['update']); |
---|
927 | while ($row = mysql_fetch_array($result)) |
---|
928 | { |
---|
929 | if (in_array($row['Field'], $all_fields)) |
---|
930 | { |
---|
931 | $column = $row['Field']; |
---|
932 | $column.= ' '.$row['Type']; |
---|
933 | if (!isset($row['Null']) or $row['Null'] == '') |
---|
934 | { |
---|
935 | $column.= ' NOT NULL'; |
---|
936 | } |
---|
937 | if (isset($row['Default'])) |
---|
938 | { |
---|
939 | $column.= " default '".$row['Default']."'"; |
---|
940 | } |
---|
941 | array_push($columns, $column); |
---|
942 | } |
---|
943 | } |
---|
944 | $query = ' |
---|
945 | CREATE TEMPORARY TABLE '.$tablename.'_temporary |
---|
946 | ( |
---|
947 | '.implode(",\n", $columns).', |
---|
948 | PRIMARY KEY (id) |
---|
949 | ) |
---|
950 | ;'; |
---|
951 | pwg_query($query); |
---|
952 | mass_inserts($tablename.'_temporary', $all_fields, $datas); |
---|
953 | // update of images table by joining with temporary table |
---|
954 | $query = ' |
---|
955 | UPDATE '.$tablename.' AS t1, '.$tablename.'_temporary AS t2 |
---|
956 | SET '.implode("\n , ", |
---|
957 | array_map( |
---|
958 | create_function('$s', 'return "t1.$s = t2.$s";') |
---|
959 | , $dbfields['update'])).' |
---|
960 | WHERE '.implode("\n AND ", |
---|
961 | array_map( |
---|
962 | create_function('$s', 'return "t1.$s = t2.$s";') |
---|
963 | , $dbfields['primary'])).' |
---|
964 | ;'; |
---|
965 | pwg_query($query); |
---|
966 | $query = ' |
---|
967 | DROP TABLE '.$tablename.'_temporary |
---|
968 | ;'; |
---|
969 | pwg_query($query); |
---|
970 | } |
---|
971 | } |
---|
972 | |
---|
973 | /** |
---|
974 | * updates the global_rank of categories under the given id_uppercat |
---|
975 | * |
---|
976 | * @param int id_uppercat |
---|
977 | * @return void |
---|
978 | */ |
---|
979 | function update_global_rank($id_uppercat = 'all') |
---|
980 | { |
---|
981 | $query = ' |
---|
982 | SELECT id,rank |
---|
983 | FROM '.CATEGORIES_TABLE.' |
---|
984 | ;'; |
---|
985 | $result = pwg_query($query); |
---|
986 | $ranks_array = array(); |
---|
987 | while ($row = mysql_fetch_array($result)) |
---|
988 | { |
---|
989 | $ranks_array[$row['id']] = $row['rank']; |
---|
990 | } |
---|
991 | |
---|
992 | // which categories to update ? |
---|
993 | $uppercats_array = array(); |
---|
994 | |
---|
995 | $query = ' |
---|
996 | SELECT id,uppercats |
---|
997 | FROM '.CATEGORIES_TABLE; |
---|
998 | if (is_numeric($id_uppercat)) |
---|
999 | { |
---|
1000 | $query.= ' |
---|
1001 | WHERE uppercats REGEXP \'(^|,)'.$id_uppercat.'(,|$)\' |
---|
1002 | AND id != '.$id_uppercat.' |
---|
1003 | '; |
---|
1004 | } |
---|
1005 | $query.= ' |
---|
1006 | ;'; |
---|
1007 | $result = pwg_query($query); |
---|
1008 | while ($row = mysql_fetch_array($result)) |
---|
1009 | { |
---|
1010 | $uppercats_array[$row['id']] = $row['uppercats']; |
---|
1011 | } |
---|
1012 | |
---|
1013 | $datas = array(); |
---|
1014 | foreach ($uppercats_array as $id => $uppercats) |
---|
1015 | { |
---|
1016 | $data = array(); |
---|
1017 | $data['id'] = $id; |
---|
1018 | $global_rank = preg_replace('/(\d+)/e', |
---|
1019 | "\$ranks_array['$1']", |
---|
1020 | str_replace(',', '.', $uppercats)); |
---|
1021 | $data['global_rank'] = $global_rank; |
---|
1022 | array_push($datas, $data); |
---|
1023 | } |
---|
1024 | |
---|
1025 | $fields = array('primary' => array('id'), 'update' => array('global_rank')); |
---|
1026 | mass_updates(CATEGORIES_TABLE, $fields, $datas); |
---|
1027 | } |
---|
1028 | |
---|
1029 | /** |
---|
1030 | * change the visible property on a set of categories |
---|
1031 | * |
---|
1032 | * @param array categories |
---|
1033 | * @param string value |
---|
1034 | * @return void |
---|
1035 | */ |
---|
1036 | function set_cat_visible($categories, $value) |
---|
1037 | { |
---|
1038 | if (!in_array($value, array('true', 'false'))) |
---|
1039 | { |
---|
1040 | return false; |
---|
1041 | } |
---|
1042 | |
---|
1043 | // unlocking a category => all its parent categories become unlocked |
---|
1044 | if ($value == 'true') |
---|
1045 | { |
---|
1046 | $uppercats = array(); |
---|
1047 | $query = ' |
---|
1048 | SELECT uppercats |
---|
1049 | FROM '.CATEGORIES_TABLE.' |
---|
1050 | WHERE id IN ('.implode(',', $categories).') |
---|
1051 | ;'; |
---|
1052 | $result = pwg_query($query); |
---|
1053 | while ($row = mysql_fetch_array($result)) |
---|
1054 | { |
---|
1055 | $uppercats = array_merge($uppercats, |
---|
1056 | explode(',', $row['uppercats'])); |
---|
1057 | } |
---|
1058 | $uppercats = array_unique($uppercats); |
---|
1059 | |
---|
1060 | $query = ' |
---|
1061 | UPDATE '.CATEGORIES_TABLE.' |
---|
1062 | SET visible = \'true\' |
---|
1063 | WHERE id IN ('.implode(',', $uppercats).') |
---|
1064 | ;'; |
---|
1065 | pwg_query($query); |
---|
1066 | } |
---|
1067 | // locking a category => all its child categories become locked |
---|
1068 | if ($value == 'false') |
---|
1069 | { |
---|
1070 | $subcats = get_subcat_ids($categories); |
---|
1071 | $query = ' |
---|
1072 | UPDATE '.CATEGORIES_TABLE.' |
---|
1073 | SET visible = \'false\' |
---|
1074 | WHERE id IN ('.implode(',', $subcats).') |
---|
1075 | ;'; |
---|
1076 | pwg_query($query); |
---|
1077 | } |
---|
1078 | } |
---|
1079 | |
---|
1080 | /** |
---|
1081 | * change the status property on a set of categories : private or public |
---|
1082 | * |
---|
1083 | * @param array categories |
---|
1084 | * @param string value |
---|
1085 | * @return void |
---|
1086 | */ |
---|
1087 | function set_cat_status($categories, $value) |
---|
1088 | { |
---|
1089 | if (!in_array($value, array('public', 'private'))) |
---|
1090 | { |
---|
1091 | return false; |
---|
1092 | } |
---|
1093 | |
---|
1094 | // make public a category => all its parent categories become public |
---|
1095 | if ($value == 'public') |
---|
1096 | { |
---|
1097 | $uppercats = array(); |
---|
1098 | $query = ' |
---|
1099 | SELECT uppercats |
---|
1100 | FROM '.CATEGORIES_TABLE.' |
---|
1101 | WHERE id IN ('.implode(',', $categories).') |
---|
1102 | ;'; |
---|
1103 | $result = pwg_query($query); |
---|
1104 | while ($row = mysql_fetch_array($result)) |
---|
1105 | { |
---|
1106 | $uppercats = array_merge($uppercats, |
---|
1107 | explode(',', $row['uppercats'])); |
---|
1108 | } |
---|
1109 | $uppercats = array_unique($uppercats); |
---|
1110 | |
---|
1111 | $query = ' |
---|
1112 | UPDATE '.CATEGORIES_TABLE.' |
---|
1113 | SET status = \'public\' |
---|
1114 | WHERE id IN ('.implode(',', $uppercats).') |
---|
1115 | ;'; |
---|
1116 | pwg_query($query); |
---|
1117 | } |
---|
1118 | // make a category private => all its child categories become private |
---|
1119 | if ($value == 'private') |
---|
1120 | { |
---|
1121 | $subcats = get_subcat_ids($categories); |
---|
1122 | $query = ' |
---|
1123 | UPDATE '.CATEGORIES_TABLE.' |
---|
1124 | SET status = \'private\' |
---|
1125 | WHERE id IN ('.implode(',', $subcats).') |
---|
1126 | ;'; |
---|
1127 | pwg_query($query); |
---|
1128 | } |
---|
1129 | } |
---|
1130 | |
---|
1131 | /** |
---|
1132 | * set a new random representant to the categories |
---|
1133 | * |
---|
1134 | * @param array categories |
---|
1135 | */ |
---|
1136 | function set_random_representant($categories) |
---|
1137 | { |
---|
1138 | $datas = array(); |
---|
1139 | foreach ($categories as $category_id) |
---|
1140 | { |
---|
1141 | $query = ' |
---|
1142 | SELECT image_id |
---|
1143 | FROM '.IMAGE_CATEGORY_TABLE.' |
---|
1144 | WHERE category_id = '.$category_id.' |
---|
1145 | ORDER BY RAND() |
---|
1146 | LIMIT 0,1 |
---|
1147 | ;'; |
---|
1148 | list($representative) = mysql_fetch_array(pwg_query($query)); |
---|
1149 | $data = array('id' => $category_id, |
---|
1150 | 'representative_picture_id' => $representative); |
---|
1151 | array_push($datas, $data); |
---|
1152 | } |
---|
1153 | |
---|
1154 | $fields = array('primary' => array('id'), |
---|
1155 | 'update' => array('representative_picture_id')); |
---|
1156 | mass_updates(CATEGORIES_TABLE, $fields, $datas); |
---|
1157 | } |
---|
1158 | ?> |
---|