1 | <?php |
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2 | // +-----------------------------------------------------------------------+ |
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3 | // | functions.php | |
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4 | // +-----------------------------------------------------------------------+ |
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5 | // | application : PhpWebGallery <http://phpwebgallery.net> | |
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6 | // | branch : BSF (Best So Far) | |
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7 | // +-----------------------------------------------------------------------+ |
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8 | // | file : $RCSfile$ |
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9 | // | last update : $Date: 2004-02-11 23:20:38 +0000 (Wed, 11 Feb 2004) $ |
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10 | // | last modifier : $Author: z0rglub $ |
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11 | // | revision : $Revision: 362 $ |
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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 | $tab_ext_create_TN = array ( 'jpg', 'png', 'JPG', 'PNG' ); |
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29 | |
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30 | // is_image returns true if the given $filename (including the path) is a |
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31 | // picture according to its format and its extension. |
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32 | // As GD library can only generate pictures from jpeg and png files, if you |
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33 | // ask if the filename is an image for thumbnail creation (second parameter |
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34 | // set to true), the only authorized formats are jpeg and png. |
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35 | function is_image( $filename, $create_thumbnail = false ) |
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36 | { |
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37 | global $conf, $tab_ext_create_TN; |
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38 | |
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39 | if ( is_file( $filename ) ) |
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40 | { |
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41 | $size = getimagesize( $filename ); |
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42 | // $size[2] == 1 means GIF |
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43 | // $size[2] == 2 means JPG |
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44 | // $size[2] == 3 means PNG |
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45 | if ( !$create_thumbnail ) |
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46 | { |
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47 | if ( in_array( get_extension( $filename ), $conf['picture_ext'] ) |
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48 | and ( $size[2] == 1 or $size[2] == 2 or $size[2] == 3 ) ) |
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49 | { |
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50 | return true; |
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51 | } |
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52 | } |
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53 | else |
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54 | { |
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55 | if ( in_array( get_extension( $filename ), $tab_ext_create_TN ) |
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56 | and ( $size[2] == 2 or $size[2] == 3 ) ) |
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57 | { |
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58 | return true; |
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59 | } |
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60 | } |
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61 | } |
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62 | return false; |
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63 | } |
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64 | |
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65 | /** |
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66 | * returns an array with all picture files according to $conf['picture_ext'] |
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67 | * |
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68 | * @param string $dir |
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69 | * @return array |
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70 | */ |
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71 | function get_picture_files( $dir ) |
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72 | { |
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73 | global $conf; |
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74 | |
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75 | $pictures = array(); |
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76 | if ( $opendir = opendir( $dir ) ) |
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77 | { |
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78 | while ( $file = readdir( $opendir ) ) |
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79 | { |
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80 | if ( in_array( get_extension( $file ), $conf['picture_ext'] ) ) |
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81 | { |
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82 | array_push( $pictures, $file ); |
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83 | } |
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84 | } |
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85 | } |
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86 | return $pictures; |
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87 | } |
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88 | |
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89 | /** |
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90 | * returns an array with all thumbnails according to $conf['picture_ext'] |
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91 | * and $conf['prefix_thumbnail'] |
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92 | * |
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93 | * @param string $dir |
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94 | * @return array |
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95 | */ |
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96 | function get_thumb_files( $dir ) |
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97 | { |
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98 | global $conf; |
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99 | |
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100 | $prefix_length = strlen( $conf['prefix_thumbnail'] ); |
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101 | |
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102 | $thumbnails = array(); |
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103 | if ( $opendir = @opendir( $dir ) ) |
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104 | { |
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105 | while ( $file = readdir( $opendir ) ) |
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106 | { |
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107 | if ( in_array( get_extension( $file ), $conf['picture_ext'] ) |
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108 | and substr($file,0,$prefix_length) == $conf['prefix_thumbnail'] ) |
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109 | { |
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110 | array_push( $thumbnails, $file ); |
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111 | } |
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112 | } |
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113 | } |
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114 | return $thumbnails; |
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115 | } |
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116 | |
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117 | function TN_exists( $dir, $file ) |
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118 | { |
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119 | global $conf; |
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120 | |
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121 | $filename = get_filename_wo_extension( $file ); |
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122 | foreach ( $conf['picture_ext'] as $ext ) { |
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123 | $test = $dir.'/thumbnail/'.$conf['prefix_thumbnail'].$filename.'.'.$ext; |
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124 | if ( is_file ( $test ) ) |
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125 | { |
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126 | return $ext; |
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127 | } |
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128 | } |
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129 | return false; |
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130 | } |
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131 | |
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132 | |
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133 | // The function delete_site deletes a site |
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134 | // and call the function delete_category for each primary category of the site |
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135 | function delete_site( $id ) |
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136 | { |
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137 | // destruction of the categories of the site |
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138 | $query = 'SELECT id'; |
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139 | $query.= ' FROM '.PREFIX_TABLE.'categories'; |
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140 | $query.= ' WHERE site_id = '.$id; |
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141 | $query.= ';'; |
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142 | $result = mysql_query( $query ); |
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143 | while ( $row = mysql_fetch_array( $result ) ) |
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144 | { |
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145 | delete_category( $row['id'] ); |
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146 | } |
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147 | |
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148 | // destruction of the site |
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149 | $query = 'DELETE FROM '.PREFIX_TABLE.'sites'; |
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150 | $query.= ' WHERE id = '.$id; |
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151 | $query.= ';'; |
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152 | mysql_query( $query ); |
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153 | } |
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154 | |
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155 | |
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156 | // The function delete_category deletes the category identified by the $id |
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157 | // It also deletes (in the database) : |
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158 | // - all the images of the images (thanks to delete_image, see further) |
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159 | // - all the links between images and this category |
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160 | // - all the restrictions linked to the category |
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161 | // The function works recursively. |
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162 | function delete_category( $id ) |
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163 | { |
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164 | // destruction of all the related images |
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165 | $query = 'SELECT id'; |
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166 | $query.= ' FROM '.PREFIX_TABLE.'images'; |
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167 | $query.= ' WHERE storage_category_id = '.$id; |
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168 | $query.= ';'; |
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169 | $result = mysql_query( $query ); |
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170 | while ( $row = mysql_fetch_array( $result ) ) |
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171 | { |
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172 | delete_image( $row['id'] ); |
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173 | } |
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174 | |
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175 | // destruction of the links between images and this category |
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176 | $query = 'DELETE FROM '.PREFIX_TABLE.'image_category'; |
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177 | $query.= ' WHERE category_id = '.$id; |
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178 | $query.= ';'; |
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179 | mysql_query( $query ); |
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180 | |
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181 | // destruction of the access linked to the category |
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182 | $query = 'DELETE FROM '.PREFIX_TABLE.'user_access'; |
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183 | $query.= ' WHERE cat_id = '.$id; |
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184 | $query.= ';'; |
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185 | mysql_query( $query ); |
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186 | $query = 'DELETE FROM '.PREFIX_TABLE.'group_access'; |
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187 | $query.= ' WHERE cat_id = '.$id; |
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188 | $query.= ';'; |
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189 | mysql_query( $query ); |
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190 | |
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191 | // destruction of the sub-categories |
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192 | $query = 'SELECT id'; |
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193 | $query.= ' FROM '.PREFIX_TABLE.'categories'; |
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194 | $query.= ' WHERE id_uppercat = '.$id; |
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195 | $query.= ';'; |
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196 | $result = mysql_query( $query ); |
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197 | while( $row = mysql_fetch_array( $result ) ) |
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198 | { |
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199 | delete_category( $row['id'] ); |
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200 | } |
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201 | |
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202 | // destruction of the category |
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203 | $query = 'DELETE FROM '.PREFIX_TABLE.'categories'; |
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204 | $query.= ' WHERE id = '.$id; |
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205 | $query.= ';'; |
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206 | mysql_query( $query ); |
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207 | } |
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208 | |
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209 | |
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210 | // The function delete_image deletes the image identified by the $id |
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211 | // It also deletes (in the database) : |
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212 | // - all the comments related to the image |
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213 | // - all the links between categories and this image |
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214 | // - all the favorites associated to the image |
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215 | function delete_image( $id ) |
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216 | { |
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217 | global $count_deleted; |
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218 | |
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219 | // destruction of the comments on the image |
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220 | $query = 'DELETE FROM '.PREFIX_TABLE.'comments'; |
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221 | $query.= ' WHERE image_id = '.$id; |
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222 | $query.= ';'; |
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223 | mysql_query( $query ); |
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224 | |
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225 | // destruction of the links between images and this category |
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226 | $query = 'DELETE FROM '.PREFIX_TABLE.'image_category'; |
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227 | $query.= ' WHERE image_id = '.$id; |
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228 | $query.= ';'; |
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229 | mysql_query( $query ); |
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230 | |
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231 | // destruction of the favorites associated with the picture |
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232 | $query = 'DELETE FROM '.PREFIX_TABLE.'favorites'; |
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233 | $query.= ' WHERE image_id = '.$id; |
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234 | $query.= ';'; |
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235 | mysql_query( $query ); |
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236 | |
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237 | // destruction of the image |
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238 | $query = 'DELETE FROM '.PREFIX_TABLE.'images'; |
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239 | $query.= ' WHERE id = '.$id; |
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240 | $query.= ';'; |
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241 | mysql_query( $query ); |
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242 | $count_deleted++; |
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243 | } |
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244 | |
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245 | // The delete_user function delete a user identified by the $user_id |
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246 | // It also deletes : |
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247 | // - all the access linked to this user |
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248 | // - all the links to any group |
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249 | // - all the favorites linked to this user |
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250 | // - all sessions linked to this user |
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251 | // - all categories informations linked to this user |
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252 | function delete_user( $user_id ) |
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253 | { |
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254 | // destruction of the access linked to the user |
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255 | $query = 'DELETE FROM '.PREFIX_TABLE.'user_access'; |
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256 | $query.= ' WHERE user_id = '.$user_id; |
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257 | $query.= ';'; |
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258 | mysql_query( $query ); |
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259 | |
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260 | // destruction of the group links for this user |
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261 | $query = 'DELETE FROM '.PREFIX_TABLE.'user_group'; |
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262 | $query.= ' WHERE user_id = '.$user_id; |
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263 | $query.= ';'; |
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264 | mysql_query( $query ); |
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265 | |
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266 | // destruction of the favorites associated with the user |
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267 | $query = 'DELETE FROM '.PREFIX_TABLE.'favorites'; |
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268 | $query.= ' WHERE user_id = '.$user_id; |
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269 | $query.= ';'; |
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270 | mysql_query( $query ); |
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271 | |
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272 | // destruction of the sessions linked with the user |
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273 | $query = 'DELETE FROM '.PREFIX_TABLE.'sessions'; |
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274 | $query.= ' WHERE user_id = '.$user_id; |
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275 | $query.= ';'; |
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276 | mysql_query( $query ); |
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277 | |
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278 | // destruction of the categories informations linked with the user |
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279 | $query = 'DELETE FROM '.PREFIX_TABLE.'user_category'; |
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280 | $query.= ' WHERE user_id = '.$user_id; |
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281 | $query.= ';'; |
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282 | mysql_query( $query ); |
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283 | |
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284 | // destruction of the user |
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285 | $query = 'DELETE FROM '.PREFIX_TABLE.'users'; |
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286 | $query.= ' WHERE id = '.$user_id; |
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287 | $query.= ';'; |
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288 | mysql_query( $query ); |
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289 | } |
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290 | |
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291 | // delete_group deletes a group identified by its $group_id. |
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292 | // It also deletes : |
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293 | // - all the access linked to this group |
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294 | // - all the links between this group and any user |
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295 | function delete_group( $group_id ) |
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296 | { |
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297 | // destruction of the access linked to the group |
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298 | $query = 'DELETE FROM '.PREFIX_TABLE.'group_access'; |
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299 | $query.= ' WHERE group_id = '.$group_id; |
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300 | $query.= ';'; |
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301 | mysql_query( $query ); |
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302 | |
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303 | // synchronize all users linked to the group |
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304 | synchronize_group( $group_id ); |
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305 | |
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306 | // destruction of the users links for this group |
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307 | $query = 'DELETE FROM '.PREFIX_TABLE.'user_group'; |
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308 | $query.= ' WHERE group_id = '.$group_id; |
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309 | $query.= ';'; |
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310 | mysql_query( $query ); |
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311 | |
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312 | // destruction of the group |
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313 | $query = 'DELETE FROM '.PREFIX_TABLE.'groups'; |
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314 | $query.= ' WHERE id = '.$group_id; |
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315 | $query.= ';'; |
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316 | mysql_query( $query ); |
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317 | } |
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318 | |
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319 | // The check_favorites function deletes all the favorites of a user if he is |
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320 | // not allowed to see them (the category or an upper category is restricted |
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321 | // or invisible) |
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322 | function check_favorites( $user_id ) |
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323 | { |
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324 | $query = 'SELECT status,forbidden_categories'; |
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325 | $query.= ' FROM '.PREFIX_TABLE.'users'; |
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326 | $query.= ' WHERE id = '.$user_id; |
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327 | $query.= ';'; |
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328 | $row = mysql_fetch_array( mysql_query( $query ) ); |
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329 | $status = $row['status']; |
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330 | // retrieving all the restricted categories for this user |
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331 | if ( isset( $row['forbidden_categories'] ) ) |
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332 | $restricted_cat = explode( ',', $row['forbidden_categories'] ); |
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333 | else |
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334 | $restricted_cat = array(); |
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335 | // retrieving all the favorites for this user and comparing their |
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336 | // categories to the restricted categories |
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337 | $query = 'SELECT image_id'; |
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338 | $query.= ' FROM '.PREFIX_TABLE.'favorites'; |
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339 | $query.= ' WHERE user_id = '.$user_id; |
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340 | $query.= ';'; |
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341 | $result = mysql_query ( $query ); |
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342 | while ( $row = mysql_fetch_array( $result ) ) |
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343 | { |
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344 | // for each picture, we have to check all the categories it belongs |
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345 | // to. Indeed if a picture belongs to category_1 and category_2 and that |
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346 | // category_2 is not restricted to the user, he can have the picture as |
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347 | // favorite. |
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348 | $query = 'SELECT DISTINCT(category_id) as category_id'; |
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349 | $query.= ' FROM '.PREFIX_TABLE.'image_category'; |
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350 | $query.= ' WHERE image_id = '.$row['image_id']; |
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351 | $query.= ';'; |
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352 | $picture_result = mysql_query( $query ); |
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353 | $picture_cat = array(); |
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354 | while ( $picture_row = mysql_fetch_array( $picture_result ) ) |
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355 | { |
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356 | array_push( $picture_cat, $picture_row['category_id'] ); |
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357 | } |
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358 | if ( count( array_diff( $picture_cat, $restricted_cat ) ) == 0 ) |
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359 | { |
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360 | $query = 'DELETE FROM '.PREFIX_TABLE.'favorites'; |
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361 | $query.= ' WHERE image_id = '.$row['image_id']; |
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362 | $query.= ' AND user_id = '.$user_id; |
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363 | $query.= ';'; |
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364 | mysql_query( $query ); |
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365 | } |
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366 | } |
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367 | } |
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368 | |
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369 | // update_category updates calculated informations about a category : |
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370 | // date_last and nb_images. It also verifies that the representative picture |
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371 | // is really linked to the category. |
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372 | function update_category( $id = 'all' ) |
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373 | { |
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374 | if ( $id == 'all' ) |
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375 | { |
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376 | $query = 'SELECT id'; |
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377 | $query.= ' FROM '.PREFIX_TABLE.'categories'; |
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378 | $query.= ';'; |
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379 | $result = mysql_query( $query ); |
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380 | while ( $row = mysql_fetch_array( $result ) ) |
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381 | { |
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382 | // recursive call |
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383 | update_category( $row['id'] ); |
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384 | } |
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385 | } |
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386 | else if ( is_numeric( $id ) ) |
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387 | { |
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388 | // updating the number of pictures |
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389 | $query = 'SELECT COUNT(*) as nb_images'; |
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390 | $query.= ' FROM '.PREFIX_TABLE.'image_category'; |
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391 | $query.= ' WHERE category_id = '.$id; |
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392 | $query.= ';'; |
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393 | list( $nb_images ) = mysql_fetch_array( mysql_query( $query ) ); |
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394 | // updating the date_last |
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395 | $query = 'SELECT MAX(date_available) AS date_available'; |
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396 | $query.= ' FROM '.PREFIX_TABLE.'images'; |
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397 | $query.= ' INNER JOIN '.PREFIX_TABLE.'image_category ON id = image_id'; |
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398 | $query.= ' WHERE category_id = '.$id; |
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399 | $query.= ';'; |
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400 | list( $date_available ) = mysql_fetch_array( mysql_query( $query ) ); |
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401 | |
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402 | $query = 'UPDATE '.PREFIX_TABLE.'categories'; |
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403 | $query.= " SET date_last = '".$date_available."'"; |
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404 | $query.= ', nb_images = '.$nb_images; |
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405 | $query.= ' WHERE id = '.$id; |
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406 | $query.= ';'; |
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407 | mysql_query( $query ); |
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408 | |
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409 | // updating the representative_picture_id : if the representative |
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410 | // picture of the category is not any more linked to the category, we |
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411 | // have to set representative_picture_id to NULL |
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412 | $query = 'SELECT representative_picture_id'; |
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413 | $query.= ' FROM '.PREFIX_TABLE.'categories'; |
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414 | $query.= ' WHERE id = '.$id; |
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415 | $row = mysql_fetch_array( mysql_query( $query ) ); |
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416 | // if the category has no representative picture (ie |
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417 | // representative_picture_id == NULL) we don't update anything |
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418 | if ( isset( $row['representative_picture_id'] ) ) |
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419 | { |
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420 | $query = 'SELECT image_id'; |
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421 | $query.= ' FROM '.PREFIX_TABLE.'image_category'; |
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422 | $query.= ' WHERE category_id = '.$id; |
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423 | $query.= ' AND image_id = '.$row['representative_picture_id']; |
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424 | $query.= ';'; |
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425 | $result = mysql_query( $query ); |
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426 | if ( mysql_num_rows( $result ) == 0 ) |
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427 | { |
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428 | $query = 'UPDATE '.PREFIX_TABLE.'categories'; |
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429 | $query.= ' SET representative_picture_id = NULL'; |
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430 | $query.= ' WHERE id = '.$id; |
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431 | $query.= ';'; |
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432 | mysql_query( $query ); |
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433 | } |
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434 | } |
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435 | } |
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436 | } |
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437 | |
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438 | function check_date_format( $date ) |
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439 | { |
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440 | // date arrives at this format : DD/MM/YYYY |
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441 | @list($day,$month,$year) = explode( '/', $date ); |
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442 | return @checkdate( $month, $day, $year ); |
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443 | } |
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444 | |
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445 | function date_convert( $date ) |
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446 | { |
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447 | // date arrives at this format : DD/MM/YYYY |
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448 | // It must be transformed in YYYY-MM-DD |
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449 | list($day,$month,$year) = explode( '/', $date ); |
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450 | return $year.'-'.$month.'-'.$day; |
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451 | } |
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452 | |
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453 | function date_convert_back( $date ) |
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454 | { |
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455 | // date arrives at this format : YYYY-MM-DD |
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456 | // It must be transformed in DD/MM/YYYY |
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457 | if ( $date != '' ) |
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458 | { |
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459 | list($year,$month,$day) = explode( '-', $date ); |
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460 | return $day.'/'.$month.'/'.$year; |
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461 | } |
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462 | else |
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463 | { |
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464 | return ''; |
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465 | } |
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466 | } |
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467 | |
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468 | // get_keywords returns an array with relevant keywords found in the string |
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469 | // given in argument. Keywords must be separated by comma in this string. |
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470 | // keywords must : |
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471 | // - be longer or equal to 3 characters |
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472 | // - not contain ', " or blank characters |
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473 | // - unique in the string ("test,test" -> "test") |
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474 | function get_keywords( $keywords_string ) |
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475 | { |
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476 | $keywords = array(); |
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477 | |
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478 | $candidates = explode( ',', $keywords_string ); |
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479 | foreach ( $candidates as $candidate ) { |
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480 | if ( strlen($candidate) >= 3 and !preg_match( '/(\'|"|\s)/', $candidate ) ) |
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481 | array_push( $keywords, $candidate ); |
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482 | } |
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483 | |
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484 | return array_unique( $keywords ); |
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485 | } |
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486 | |
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487 | function display_categories( $categories, $indent, |
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488 | $selected = -1, $forbidden = -1 ) |
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489 | { |
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490 | global $vtp,$sub; |
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491 | |
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492 | foreach ( $categories as $category ) { |
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493 | if ( $category['id'] != $forbidden ) |
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494 | { |
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495 | $vtp->addSession( $sub, 'associate_cat' ); |
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496 | $vtp->setVar( $sub, 'associate_cat.value', $category['id'] ); |
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497 | $content = $indent.'- '.$category['name']; |
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498 | $vtp->setVar( $sub, 'associate_cat.content', $content ); |
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499 | if ( $category['id'] == $selected ) |
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500 | $vtp->setVar( $sub, 'associate_cat.selected', ' selected="selected"' ); |
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501 | $vtp->closeSession( $sub, 'associate_cat' ); |
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502 | display_categories( $category['subcats'], $indent.str_repeat(' ',3), |
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503 | $selected, $forbidden ); |
---|
504 | } |
---|
505 | } |
---|
506 | } |
---|
507 | |
---|
508 | /** |
---|
509 | * Complete plain structure of the gallery |
---|
510 | * |
---|
511 | * Returns the plain structure (one level array) of the gallery. In the |
---|
512 | * returned array, each element is an array with jeys 'id' and |
---|
513 | * 'id_uppercat'. The function also fills the array $page['subcats'] which |
---|
514 | * associate (category_id => array of sub-categories id). |
---|
515 | * |
---|
516 | * @param bool $use_name |
---|
517 | * @return array |
---|
518 | */ |
---|
519 | function get_plain_structure( $use_name = false ) |
---|
520 | { |
---|
521 | global $page; |
---|
522 | |
---|
523 | $plain_structure = array(); |
---|
524 | |
---|
525 | $query = 'SELECT id,id_uppercat'; |
---|
526 | if ( $use_name ) $query.= ',name'; |
---|
527 | $query.= ' FROM '.PREFIX_TABLE.'categories'; |
---|
528 | $query.= ' ORDER BY id_uppercat ASC, rank ASC'; |
---|
529 | $query.= ';'; |
---|
530 | |
---|
531 | $subcats = array(); |
---|
532 | $id_uppercat = 'NULL'; |
---|
533 | |
---|
534 | $result = mysql_query( $query ); |
---|
535 | while ( $row = mysql_fetch_array( $result ) ) |
---|
536 | { |
---|
537 | $plain_structure[$row['id']]['id'] = $row['id']; |
---|
538 | if ( !isset( $row['id_uppercat'] ) ) $row['id_uppercat'] = 'NULL'; |
---|
539 | $plain_structure[$row['id']]['id_uppercat'] = $row['id_uppercat']; |
---|
540 | if ( $use_name ) $plain_structure[$row['id']]['name'] = $row['name']; |
---|
541 | // subcats list |
---|
542 | if ( $row['id_uppercat'] != $id_uppercat ) |
---|
543 | { |
---|
544 | $page['subcats'][$id_uppercat] = $subcats; |
---|
545 | |
---|
546 | $subcats = array(); |
---|
547 | $id_uppercat = $row['id_uppercat']; |
---|
548 | } |
---|
549 | array_push( $subcats, $row['id'] ); |
---|
550 | } |
---|
551 | mysql_free_result( $result ); |
---|
552 | |
---|
553 | $page['subcats'][$id_uppercat] = $subcats; |
---|
554 | |
---|
555 | return $plain_structure; |
---|
556 | } |
---|
557 | |
---|
558 | /** |
---|
559 | * get N levels array representing structure under the given category |
---|
560 | * |
---|
561 | * create_structure returns the N levels array representing structure under |
---|
562 | * the given gategory id. It also updates the |
---|
563 | * $page['plain_structure'][id]['all_subcats_id'] and |
---|
564 | * $page['plain_structure'][id]['direct_subcats_ids'] for each sub category. |
---|
565 | * |
---|
566 | * @param int $id_uppercat |
---|
567 | * @return array |
---|
568 | */ |
---|
569 | function create_structure( $id_uppercat ) |
---|
570 | { |
---|
571 | global $page; |
---|
572 | |
---|
573 | $structure = array(); |
---|
574 | $ids = get_subcats_ids( $id_uppercat ); |
---|
575 | foreach ( $ids as $id ) { |
---|
576 | $category = $page['plain_structure'][$id]; |
---|
577 | |
---|
578 | $category['subcats'] = create_structure( $id ); |
---|
579 | |
---|
580 | $page['plain_structure'][$id]['all_subcats_ids'] = |
---|
581 | get_all_subcats_ids( $id ); |
---|
582 | |
---|
583 | $page['plain_structure'][$id]['direct_subcats_ids'] = |
---|
584 | get_subcats_ids( $id ); |
---|
585 | |
---|
586 | array_push( $structure, $category ); |
---|
587 | } |
---|
588 | return $structure; |
---|
589 | } |
---|
590 | |
---|
591 | /** |
---|
592 | * returns direct sub-categories ids |
---|
593 | * |
---|
594 | * Returns an array containing all the direct sub-categories ids of the |
---|
595 | * given category. It uses the $page['subcats'] global array. |
---|
596 | * |
---|
597 | * @param int $id_uppercat |
---|
598 | * @return array |
---|
599 | */ |
---|
600 | function get_subcats_ids( $id_uppercat ) |
---|
601 | { |
---|
602 | global $page; |
---|
603 | |
---|
604 | if ( $id_uppercat == '' ) $id_uppercat = 'NULL'; |
---|
605 | |
---|
606 | if ( isset( $page['subcats'][$id_uppercat] ) ) |
---|
607 | return $page['subcats'][$id_uppercat]; |
---|
608 | else |
---|
609 | return array(); |
---|
610 | } |
---|
611 | |
---|
612 | /** |
---|
613 | * returns all sub-categories ids, not only direct ones |
---|
614 | * |
---|
615 | * Returns an array containing all the sub-categories ids of the given |
---|
616 | * category, not only direct ones. This function is recursive. |
---|
617 | * |
---|
618 | * @param int $category_id |
---|
619 | * @return array |
---|
620 | */ |
---|
621 | function get_all_subcats_ids( $category_id ) |
---|
622 | { |
---|
623 | $ids = array(); |
---|
624 | |
---|
625 | $subcats = get_subcats_ids( $category_id ); |
---|
626 | $ids = array_merge( $ids, $subcats ); |
---|
627 | foreach ( $subcats as $subcat ) { |
---|
628 | // recursive call |
---|
629 | $sub_subcats = get_all_subcats_ids( $subcat ); |
---|
630 | $ids = array_merge( $ids, $sub_subcats ); |
---|
631 | } |
---|
632 | return array_unique( $ids ); |
---|
633 | } |
---|
634 | |
---|
635 | /** |
---|
636 | * prepares the query to update the table user_category |
---|
637 | * |
---|
638 | * Prepares the query (global variable $values) to update table |
---|
639 | * user_category : for a couple (user,category) the number of sub-categories |
---|
640 | * and the last date of the category (all sub-categories taken into |
---|
641 | * account). It also calls function update_uppercats for each category. The |
---|
642 | * function is recursive. |
---|
643 | * |
---|
644 | * @param array $categories |
---|
645 | * @return void |
---|
646 | */ |
---|
647 | function update_user_category( $categories ) |
---|
648 | { |
---|
649 | global $page,$user_restrictions,$value_num,$values; |
---|
650 | |
---|
651 | foreach ( $categories as $category ) { |
---|
652 | // recursive call |
---|
653 | update_user_category( $category['subcats'] ); |
---|
654 | // 1. update the table user_category |
---|
655 | foreach ( $user_restrictions as $user_id => $restrictions ) { |
---|
656 | // if the category is forbidden to this user, go to next user |
---|
657 | if ( in_array( $category['id'], $restrictions ) ) continue; |
---|
658 | |
---|
659 | // how many sub_categories for this user ? |
---|
660 | $user_subcats = array_diff( |
---|
661 | $page['plain_structure'][$category['id']]['direct_subcats_ids'], |
---|
662 | $restrictions ); |
---|
663 | $user_nb_subcats = count( array_unique( $user_subcats ) ); |
---|
664 | // last date of the category |
---|
665 | $user_all_subcats = array_unique( array_diff( |
---|
666 | $page['plain_structure'][$category['id']]['all_subcats_ids'], |
---|
667 | $restrictions ) ); |
---|
668 | |
---|
669 | $query = 'SELECT MAX(date_last) AS last_date'; |
---|
670 | $query.= ' FROM '.PREFIX_TABLE.'categories'; |
---|
671 | $query.= ' WHERE id IN ('.$category['id']; |
---|
672 | if ( count( $user_all_subcats ) > 0 ) |
---|
673 | $query.= ','.implode( ',', $user_all_subcats ); |
---|
674 | $query.= ')'; |
---|
675 | $query.= ';'; |
---|
676 | $row = mysql_fetch_array( mysql_query( $query ) ); |
---|
677 | |
---|
678 | // insert a new line in database |
---|
679 | if ( $value_num++ > 0 ) $values.= ', '; |
---|
680 | else $values.= ' '; |
---|
681 | $values.= '('.$user_id.",".$category['id']; |
---|
682 | if ( isset( $row['last_date'] ) ) $values.= ",'".$row['last_date']."'"; |
---|
683 | else $values.= ',NULL'; |
---|
684 | $values.= ','.$user_nb_subcats.')'; |
---|
685 | } |
---|
686 | update_uppercats( $category['id'] ); |
---|
687 | } |
---|
688 | } |
---|
689 | |
---|
690 | /** |
---|
691 | * updates the column categories.uppercats |
---|
692 | * |
---|
693 | * @param int $category_id |
---|
694 | * @return void |
---|
695 | */ |
---|
696 | function update_uppercats( $category_id ) |
---|
697 | { |
---|
698 | global $page; |
---|
699 | |
---|
700 | $final_id = $category_id; |
---|
701 | $uppercats = array(); |
---|
702 | |
---|
703 | array_push( $uppercats, $category_id ); |
---|
704 | $uppercat = $page['plain_structure'][$category_id]['id_uppercat']; |
---|
705 | |
---|
706 | while ( $uppercat != 'NULL' ) |
---|
707 | { |
---|
708 | array_push( $uppercats, $uppercat ); |
---|
709 | $category_id = $page['plain_structure'][$category_id]['id_uppercat']; |
---|
710 | $uppercat = $page['plain_structure'][$category_id]['id_uppercat']; |
---|
711 | } |
---|
712 | |
---|
713 | $string_uppercats = implode( ',', array_reverse( $uppercats ) ); |
---|
714 | $query = 'UPDATE '.PREFIX_TABLE.'categories'; |
---|
715 | $query.= ' SET uppercats = '."'".$string_uppercats."'"; |
---|
716 | $query.= ' WHERE id = '.$final_id; |
---|
717 | $query.= ';'; |
---|
718 | mysql_query( $query ); |
---|
719 | } |
---|
720 | |
---|
721 | /** |
---|
722 | * returns an array with the ids of the restricted categories for the user |
---|
723 | * |
---|
724 | * Returns an array with the ids of the restricted categories for the |
---|
725 | * user. If the $check_invisible parameter is set to true, invisible |
---|
726 | * categorie are added to the restricted one in the array. |
---|
727 | * |
---|
728 | * @param int $user_id |
---|
729 | * @param string $user_status |
---|
730 | * @param bool $check_invisible |
---|
731 | * @param bool $use_groups |
---|
732 | * @return array |
---|
733 | */ |
---|
734 | function get_user_restrictions( $user_id, $user_status, |
---|
735 | $check_invisible, $use_groups = true ) |
---|
736 | { |
---|
737 | // 1. retrieving ids of private categories |
---|
738 | $query = 'SELECT id'; |
---|
739 | $query.= ' FROM '.PREFIX_TABLE.'categories'; |
---|
740 | $query.= " WHERE status = 'private'"; |
---|
741 | $query.= ';'; |
---|
742 | $result = mysql_query( $query ); |
---|
743 | $privates = array(); |
---|
744 | while ( $row = mysql_fetch_array( $result ) ) |
---|
745 | { |
---|
746 | array_push( $privates, $row['id'] ); |
---|
747 | } |
---|
748 | // 2. retrieving all authorized categories for the user |
---|
749 | $authorized = array(); |
---|
750 | // 2.1. retrieving authorized categories thanks to personnal user |
---|
751 | // authorization |
---|
752 | $query = 'SELECT cat_id'; |
---|
753 | $query.= ' FROM '.PREFIX_TABLE.'user_access'; |
---|
754 | $query.= ' WHERE user_id = '.$user_id; |
---|
755 | $query.= ';'; |
---|
756 | $result = mysql_query( $query ); |
---|
757 | while ( $row = mysql_fetch_array( $result ) ) |
---|
758 | { |
---|
759 | array_push( $authorized, $row['cat_id'] ); |
---|
760 | } |
---|
761 | // 2.2. retrieving authorized categories thanks to group authorization to |
---|
762 | // which the user is a member |
---|
763 | if ( $use_groups ) |
---|
764 | { |
---|
765 | $query = 'SELECT ga.cat_id'; |
---|
766 | $query.= ' FROM '.PREFIX_TABLE.'user_group as ug'; |
---|
767 | $query.= ', '.PREFIX_TABLE.'group_access as ga'; |
---|
768 | $query.= ' WHERE ug.group_id = ga.group_id'; |
---|
769 | $query.= ' AND ug.user_id = '.$user_id; |
---|
770 | $query.= ';'; |
---|
771 | $result = mysql_query( $query ); |
---|
772 | while ( $row = mysql_fetch_array( $result ) ) |
---|
773 | { |
---|
774 | array_push( $authorized, $row['cat_id'] ); |
---|
775 | } |
---|
776 | $authorized = array_unique( $authorized ); |
---|
777 | } |
---|
778 | |
---|
779 | $forbidden = array(); |
---|
780 | foreach ( $privates as $private ) { |
---|
781 | if ( !in_array( $private, $authorized ) ) |
---|
782 | { |
---|
783 | array_push( $forbidden, $private ); |
---|
784 | } |
---|
785 | } |
---|
786 | |
---|
787 | if ( $check_invisible ) |
---|
788 | { |
---|
789 | // 3. adding to the restricted categories, the invisible ones |
---|
790 | if ( $user_status != 'admin' ) |
---|
791 | { |
---|
792 | $query = 'SELECT id'; |
---|
793 | $query.= ' FROM '.PREFIX_TABLE.'categories'; |
---|
794 | $query.= " WHERE visible = 'false';"; |
---|
795 | $result = mysql_query( $query ); |
---|
796 | while ( $row = mysql_fetch_array( $result ) ) |
---|
797 | { |
---|
798 | array_push( $forbidden, $row['id'] ); |
---|
799 | } |
---|
800 | } |
---|
801 | } |
---|
802 | return array_unique( $forbidden ); |
---|
803 | } |
---|
804 | |
---|
805 | /** |
---|
806 | * finalizes operation for user_category table update |
---|
807 | * |
---|
808 | * This function is called by synchronization_*. It creates the |
---|
809 | * $page['plain_structure'] and $page['structure'], get the SQL query to |
---|
810 | * update user_category, clean user_category, and finally update the |
---|
811 | * table. The users updates depends on the global array $user_restrictions. |
---|
812 | * |
---|
813 | * @return void |
---|
814 | */ |
---|
815 | function synchronize() |
---|
816 | { |
---|
817 | global $user_restrictions,$page,$values; |
---|
818 | |
---|
819 | update_user_category( $page['structure'] ); |
---|
820 | |
---|
821 | // cleaning user_category table for users to update |
---|
822 | foreach( $user_restrictions as $user_id => $restrictions ) { |
---|
823 | $query = 'DELETE'; |
---|
824 | $query.= ' FROM '.PREFIX_TABLE.'user_category'; |
---|
825 | $query.= ' WHERE user_id = '.$user_id; |
---|
826 | $query.= ';'; |
---|
827 | mysql_query( $query ); |
---|
828 | } |
---|
829 | |
---|
830 | $query = 'INSERT INTO '.PREFIX_TABLE.'user_category'; |
---|
831 | $query.= ' (user_id,category_id,date_last,nb_sub_categories) VALUES '; |
---|
832 | $query.= $values; |
---|
833 | $query.= ';'; |
---|
834 | mysql_query( $query ); |
---|
835 | } |
---|
836 | |
---|
837 | /** |
---|
838 | * synchronizes all users calculated informations |
---|
839 | * |
---|
840 | * fills global array $user_restrictions with all users and related |
---|
841 | * restrictions before calling synchronize. |
---|
842 | * |
---|
843 | * @return void |
---|
844 | */ |
---|
845 | function synchronize_all_users() |
---|
846 | { |
---|
847 | global $user_restrictions,$page; |
---|
848 | |
---|
849 | $page['plain_structure'] = get_plain_structure(); |
---|
850 | $page['structure'] = create_structure( '' ); |
---|
851 | |
---|
852 | $user_restrictions = array(); |
---|
853 | |
---|
854 | $query = 'SELECT id'; |
---|
855 | $query.= ' FROM '.PREFIX_TABLE.'users'; |
---|
856 | $query.= ';'; |
---|
857 | $result = mysql_query( $query ); |
---|
858 | while ( $row = mysql_fetch_array( $result ) ) |
---|
859 | { |
---|
860 | $user_restrictions[$row['id']] = update_user_restrictions( $row['id'] ); |
---|
861 | } |
---|
862 | synchronize(); |
---|
863 | } |
---|
864 | |
---|
865 | /** |
---|
866 | * synchronizes 1 user calculated informations |
---|
867 | * |
---|
868 | * fills global array $user_restrictions with the user id and its related |
---|
869 | * restrictions before calling synchronize. |
---|
870 | * |
---|
871 | * @param int $user_id |
---|
872 | * @return void |
---|
873 | */ |
---|
874 | function synchronize_user( $user_id ) |
---|
875 | { |
---|
876 | global $user_restrictions,$page; |
---|
877 | |
---|
878 | $page['plain_structure'] = get_plain_structure(); |
---|
879 | $page['structure'] = create_structure( '' ); |
---|
880 | |
---|
881 | $user_restrictions = array(); |
---|
882 | $user_restrictions[$user_id] = update_user_restrictions( $user_id ); |
---|
883 | synchronize(); |
---|
884 | } |
---|
885 | |
---|
886 | /** |
---|
887 | * synchronizes all users (belonging to the group) calculated informations |
---|
888 | * |
---|
889 | * fills global array $user_restrictions with all users and related |
---|
890 | * restrictions before calling synchronize. |
---|
891 | * |
---|
892 | * @return void |
---|
893 | */ |
---|
894 | function synchronize_group( $group_id ) |
---|
895 | { |
---|
896 | global $user_restrictions,$page; |
---|
897 | |
---|
898 | $page['plain_structure'] = get_plain_structure(); |
---|
899 | $page['structure'] = create_structure( '' ); |
---|
900 | |
---|
901 | $user_restrictions = array(); |
---|
902 | |
---|
903 | $query = 'SELECT id'; |
---|
904 | $query.= ' FROM '.PREFIX_TABLE.'users'; |
---|
905 | $query.= ', '.PREFIX_TABLE.'user_group'; |
---|
906 | $query.= ' WHERE group_id = '.$group_id; |
---|
907 | $query.= ' AND id = user_id'; |
---|
908 | $query.= ';'; |
---|
909 | $result = mysql_query( $query ); |
---|
910 | while ( $row = mysql_fetch_array( $result ) ) |
---|
911 | { |
---|
912 | $user_restrictions[$row['id']] = update_user_restrictions( $row['id'] ); |
---|
913 | } |
---|
914 | synchronize(); |
---|
915 | } |
---|
916 | |
---|
917 | /** |
---|
918 | * updates the calculated data users.forbidden_categories, it includes |
---|
919 | * sub-categories of the direct forbidden categories |
---|
920 | * |
---|
921 | * @param nt $user_id |
---|
922 | * @return array |
---|
923 | */ |
---|
924 | function update_user_restrictions( $user_id ) |
---|
925 | { |
---|
926 | $restrictions = get_user_all_restrictions( $user_id ); |
---|
927 | |
---|
928 | // update the users.forbidden_categories in database |
---|
929 | $query = 'UPDATE '.PREFIX_TABLE.'users'; |
---|
930 | $query.= ' SET forbidden_categories = '; |
---|
931 | if ( count( $restrictions ) > 0 ) |
---|
932 | $query.= "'".implode( ',', $restrictions )."'"; |
---|
933 | else |
---|
934 | $query.= 'NULL'; |
---|
935 | $query .= ' WHERE id = '.$user_id; |
---|
936 | $query.= ';'; |
---|
937 | mysql_query( $query ); |
---|
938 | |
---|
939 | return $restrictions; |
---|
940 | } |
---|
941 | |
---|
942 | /** |
---|
943 | * returns all the restricted categories ids including sub-categories |
---|
944 | * |
---|
945 | * @param int $user_id |
---|
946 | * @return array |
---|
947 | */ |
---|
948 | function get_user_all_restrictions( $user_id ) |
---|
949 | { |
---|
950 | global $page; |
---|
951 | |
---|
952 | $query = 'SELECT status'; |
---|
953 | $query.= ' FROM '.PREFIX_TABLE.'users'; |
---|
954 | $query.= ' WHERE id = '.$user_id; |
---|
955 | $query.= ';'; |
---|
956 | $row = mysql_fetch_array( mysql_query( $query ) ); |
---|
957 | |
---|
958 | $base_restrictions=get_user_restrictions($user_id,$row['status'],true,true); |
---|
959 | |
---|
960 | $restrictions = $base_restrictions; |
---|
961 | foreach ( $base_restrictions as $category_id ) { |
---|
962 | echo $category_id.' is forbidden to user '.$user_id.'<br />'; |
---|
963 | $restrictions = |
---|
964 | array_merge( $restrictions, |
---|
965 | $page['plain_structure'][$category_id]['all_subcats_ids'] ); |
---|
966 | } |
---|
967 | |
---|
968 | return array_unique( $restrictions ); |
---|
969 | } |
---|
970 | |
---|
971 | // The function is_user_allowed returns : |
---|
972 | // - 0 : if the category is allowed with this $restrictions array |
---|
973 | // - 1 : if this category is not allowed |
---|
974 | // - 2 : if an uppercat category is not allowed |
---|
975 | // Note : the restrictions array must represent ONLY direct forbidden |
---|
976 | // categories, not all forbidden categories |
---|
977 | function is_user_allowed( $category_id, $restrictions ) |
---|
978 | { |
---|
979 | if ( in_array( $category_id, $restrictions ) ) return 1; |
---|
980 | |
---|
981 | $query = 'SELECT uppercats'; |
---|
982 | $query.= ' FROM '.PREFIX_TABLE.'categories'; |
---|
983 | $query.= ' WHERE id = '.$category_id; |
---|
984 | $query.= ';'; |
---|
985 | $row = mysql_fetch_array( mysql_query( $query ) ); |
---|
986 | $uppercats = explode( ',', $row['uppercats'] ); |
---|
987 | foreach ( $uppercats as $category_id ) { |
---|
988 | if ( in_array( $category_id, $restrictions ) ) return 2; |
---|
989 | } |
---|
990 | |
---|
991 | // no restriction found : the user is allowed to access this category |
---|
992 | return 0; |
---|
993 | } |
---|
994 | |
---|
995 | /** |
---|
996 | * returns an array containing sub-directories which can be a category |
---|
997 | * |
---|
998 | * directories nammed "thumbnail" are omitted |
---|
999 | * |
---|
1000 | * @param string $basedir |
---|
1001 | * @return array |
---|
1002 | */ |
---|
1003 | function get_category_directories( $basedir ) |
---|
1004 | { |
---|
1005 | $sub_dirs = array(); |
---|
1006 | |
---|
1007 | if ( $opendir = opendir( $basedir ) ) |
---|
1008 | { |
---|
1009 | while ( $file = readdir( $opendir ) ) |
---|
1010 | { |
---|
1011 | if ( $file != '.' and $file != '..' |
---|
1012 | and is_dir( $basedir.'/'.$file ) |
---|
1013 | and $file != 'thumbnail' ) |
---|
1014 | { |
---|
1015 | array_push( $sub_dirs, $file ); |
---|
1016 | } |
---|
1017 | } |
---|
1018 | } |
---|
1019 | return $sub_dirs; |
---|
1020 | } |
---|
1021 | ?> |
---|