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: 2004-05-28 21:56:07 +0000 (Fri, 28 May 2004) $ |
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10 | // | last modifier : $Author: z0rglub $ |
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11 | // | revision : $Revision: 423 $ |
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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 '.CATEGORIES_TABLE; |
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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 '.CATEGORIES_TABLE; |
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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 '.CATEGORIES_TABLE; |
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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 user |
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279 | $query = 'DELETE FROM '.USERS_TABLE; |
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280 | $query.= ' WHERE id = '.$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 | |
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285 | // delete_group deletes a group identified by its $group_id. |
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286 | // It also deletes : |
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287 | // - all the access linked to this group |
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288 | // - all the links between this group and any user |
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289 | function delete_group( $group_id ) |
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290 | { |
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291 | // destruction of the access linked to the group |
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292 | $query = 'DELETE FROM '.PREFIX_TABLE.'group_access'; |
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293 | $query.= ' WHERE group_id = '.$group_id; |
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294 | $query.= ';'; |
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295 | mysql_query( $query ); |
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296 | |
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297 | // synchronize all users linked to the group |
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298 | synchronize_group( $group_id ); |
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299 | |
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300 | // destruction of the users links for this group |
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301 | $query = 'DELETE FROM '.PREFIX_TABLE.'user_group'; |
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302 | $query.= ' WHERE group_id = '.$group_id; |
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303 | $query.= ';'; |
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304 | mysql_query( $query ); |
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305 | |
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306 | // destruction of the group |
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307 | $query = 'DELETE FROM '.PREFIX_TABLE.'groups'; |
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308 | $query.= ' WHERE id = '.$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 | |
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313 | // The check_favorites function deletes all the favorites of a user if he is |
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314 | // not allowed to see them (the category or an upper category is restricted |
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315 | // or invisible) |
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316 | function check_favorites( $user_id ) |
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317 | { |
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318 | $query = 'SELECT status,forbidden_categories'; |
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319 | $query.= ' FROM '.USERS_TABLE; |
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320 | $query.= ' WHERE id = '.$user_id; |
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321 | $query.= ';'; |
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322 | $row = mysql_fetch_array( mysql_query( $query ) ); |
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323 | $status = $row['status']; |
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324 | // retrieving all the restricted categories for this user |
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325 | if ( isset( $row['forbidden_categories'] ) ) |
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326 | $restricted_cat = explode( ',', $row['forbidden_categories'] ); |
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327 | else |
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328 | $restricted_cat = array(); |
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329 | // retrieving all the favorites for this user and comparing their |
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330 | // categories to the restricted categories |
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331 | $query = 'SELECT image_id'; |
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332 | $query.= ' FROM '.PREFIX_TABLE.'favorites'; |
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333 | $query.= ' WHERE user_id = '.$user_id; |
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334 | $query.= ';'; |
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335 | $result = mysql_query ( $query ); |
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336 | while ( $row = mysql_fetch_array( $result ) ) |
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337 | { |
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338 | // for each picture, we have to check all the categories it belongs |
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339 | // to. Indeed if a picture belongs to category_1 and category_2 and that |
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340 | // category_2 is not restricted to the user, he can have the picture as |
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341 | // favorite. |
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342 | $query = 'SELECT DISTINCT(category_id) as category_id'; |
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343 | $query.= ' FROM '.PREFIX_TABLE.'image_category'; |
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344 | $query.= ' WHERE image_id = '.$row['image_id']; |
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345 | $query.= ';'; |
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346 | $picture_result = mysql_query( $query ); |
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347 | $picture_cat = array(); |
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348 | while ( $picture_row = mysql_fetch_array( $picture_result ) ) |
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349 | { |
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350 | array_push( $picture_cat, $picture_row['category_id'] ); |
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351 | } |
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352 | if ( count( array_diff( $picture_cat, $restricted_cat ) ) == 0 ) |
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353 | { |
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354 | $query = 'DELETE FROM '.PREFIX_TABLE.'favorites'; |
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355 | $query.= ' WHERE image_id = '.$row['image_id']; |
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356 | $query.= ' AND user_id = '.$user_id; |
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357 | $query.= ';'; |
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358 | mysql_query( $query ); |
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359 | } |
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360 | } |
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361 | } |
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362 | |
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363 | // update_category updates calculated informations about a category : |
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364 | // date_last and nb_images. It also verifies that the representative picture |
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365 | // is really linked to the category. |
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366 | function update_category( $id = 'all' ) |
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367 | { |
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368 | if ( $id == 'all' ) |
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369 | { |
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370 | $query = 'SELECT id FROM '.CATEGORIES_TABLE.';'; |
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371 | $result = mysql_query( $query ); |
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372 | while ( $row = mysql_fetch_array( $result ) ) |
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373 | { |
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374 | // recursive call |
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375 | update_category( $row['id'] ); |
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376 | } |
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377 | } |
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378 | else if ( is_numeric( $id ) ) |
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379 | { |
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380 | // updating the number of pictures |
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381 | $query = 'SELECT COUNT(*) as nb_images'; |
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382 | $query.= ' FROM '.PREFIX_TABLE.'image_category'; |
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383 | $query.= ' WHERE category_id = '.$id; |
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384 | $query.= ';'; |
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385 | list( $nb_images ) = mysql_fetch_array( mysql_query( $query ) ); |
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386 | // updating the date_last |
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387 | $query = 'SELECT MAX(date_available) AS date_available'; |
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388 | $query.= ' FROM '.PREFIX_TABLE.'images'; |
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389 | $query.= ' INNER JOIN '.PREFIX_TABLE.'image_category ON id = image_id'; |
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390 | $query.= ' WHERE category_id = '.$id; |
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391 | $query.= ';'; |
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392 | list( $date_available ) = mysql_fetch_array( mysql_query( $query ) ); |
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393 | |
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394 | $query = 'UPDATE '.CATEGORIES_TABLE; |
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395 | $query.= " SET date_last = '".$date_available."'"; |
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396 | $query.= ', nb_images = '.$nb_images; |
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397 | $query.= ' WHERE id = '.$id; |
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398 | $query.= ';'; |
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399 | mysql_query( $query ); |
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400 | |
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401 | // updating the representative_picture_id : if the representative |
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402 | // picture of the category is not any more linked to the category, we |
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403 | // have to set representative_picture_id to NULL |
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404 | $query = 'SELECT representative_picture_id'; |
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405 | $query.= ' FROM '.CATEGORIES_TABLE; |
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406 | $query.= ' WHERE id = '.$id; |
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407 | $row = mysql_fetch_array( mysql_query( $query ) ); |
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408 | // if the category has no representative picture (ie |
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409 | // representative_picture_id == NULL) we don't update anything |
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410 | if ( isset( $row['representative_picture_id'] ) ) |
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411 | { |
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412 | $query = 'SELECT image_id'; |
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413 | $query.= ' FROM '.PREFIX_TABLE.'image_category'; |
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414 | $query.= ' WHERE category_id = '.$id; |
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415 | $query.= ' AND image_id = '.$row['representative_picture_id']; |
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416 | $query.= ';'; |
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417 | $result = mysql_query( $query ); |
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418 | if ( mysql_num_rows( $result ) == 0 ) |
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419 | { |
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420 | $query = 'UPDATE '.CATEGORIES_TABLE; |
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421 | $query.= ' SET representative_picture_id = NULL'; |
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422 | $query.= ' WHERE id = '.$id; |
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423 | $query.= ';'; |
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424 | mysql_query( $query ); |
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425 | } |
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426 | } |
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427 | } |
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428 | } |
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429 | |
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430 | function check_date_format( $date ) |
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431 | { |
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432 | // date arrives at this format : DD/MM/YYYY |
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433 | @list($day,$month,$year) = explode( '/', $date ); |
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434 | return @checkdate( $month, $day, $year ); |
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435 | } |
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436 | |
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437 | function date_convert( $date ) |
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438 | { |
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439 | // date arrives at this format : DD/MM/YYYY |
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440 | // It must be transformed in YYYY-MM-DD |
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441 | list($day,$month,$year) = explode( '/', $date ); |
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442 | return $year.'-'.$month.'-'.$day; |
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443 | } |
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444 | |
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445 | function date_convert_back( $date ) |
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446 | { |
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447 | // date arrives at this format : YYYY-MM-DD |
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448 | // It must be transformed in DD/MM/YYYY |
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449 | if ( $date != '' ) |
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450 | { |
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451 | list($year,$month,$day) = explode( '-', $date ); |
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452 | return $day.'/'.$month.'/'.$year; |
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453 | } |
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454 | else |
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455 | { |
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456 | return ''; |
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457 | } |
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458 | } |
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459 | |
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460 | // get_keywords returns an array with relevant keywords found in the string |
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461 | // given in argument. Keywords must be separated by comma in this string. |
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462 | // keywords must : |
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463 | // - be longer or equal to 3 characters |
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464 | // - not contain ', " or blank characters |
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465 | // - unique in the string ("test,test" -> "test") |
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466 | function get_keywords( $keywords_string ) |
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467 | { |
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468 | $keywords = array(); |
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469 | |
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470 | $candidates = explode( ',', $keywords_string ); |
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471 | foreach ( $candidates as $candidate ) { |
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472 | if ( strlen($candidate) >= 3 and !preg_match( '/(\'|"|\s)/', $candidate ) ) |
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473 | array_push( $keywords, $candidate ); |
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474 | } |
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475 | |
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476 | return array_unique( $keywords ); |
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477 | } |
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478 | |
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479 | function display_categories( $categories, $indent, |
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480 | $selected = -1, $forbidden = -1 ) |
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481 | { |
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482 | global $vtp,$sub; |
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483 | |
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484 | foreach ( $categories as $category ) { |
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485 | if ( $category['id'] != $forbidden ) |
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486 | { |
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487 | $vtp->addSession( $sub, 'associate_cat' ); |
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488 | $vtp->setVar( $sub, 'associate_cat.value', $category['id'] ); |
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489 | $content = $indent.'- '.$category['name']; |
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490 | $vtp->setVar( $sub, 'associate_cat.content', $content ); |
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491 | if ( $category['id'] == $selected ) |
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492 | $vtp->setVar( $sub, 'associate_cat.selected', ' selected="selected"' ); |
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493 | $vtp->closeSession( $sub, 'associate_cat' ); |
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494 | display_categories( $category['subcats'], $indent.str_repeat(' ',3), |
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495 | $selected, $forbidden ); |
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496 | } |
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497 | } |
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498 | } |
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499 | |
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500 | /** |
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501 | * Complete plain structure of the gallery |
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502 | * |
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503 | * Returns the plain structure (one level array) of the gallery. In the |
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504 | * returned array, each element is an array with jeys 'id' and |
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505 | * 'id_uppercat'. The function also fills the array $page['subcats'] which |
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506 | * associate (category_id => array of sub-categories id). |
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507 | * |
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508 | * @param bool $use_name |
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509 | * @return array |
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510 | */ |
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511 | function get_plain_structure( $use_name = false ) |
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512 | { |
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513 | global $page; |
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514 | |
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515 | $plain_structure = array(); |
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516 | |
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517 | $query = 'SELECT id,id_uppercat'; |
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518 | if ( $use_name ) $query.= ',name'; |
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519 | $query.= ' FROM '.CATEGORIES_TABLE; |
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520 | $query.= ' ORDER BY id_uppercat ASC, rank ASC'; |
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521 | $query.= ';'; |
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522 | |
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523 | $subcats = array(); |
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524 | $id_uppercat = 'NULL'; |
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525 | |
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526 | $result = mysql_query( $query ); |
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527 | while ( $row = mysql_fetch_array( $result ) ) |
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528 | { |
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529 | $plain_structure[$row['id']]['id'] = $row['id']; |
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530 | if ( !isset( $row['id_uppercat'] ) ) $row['id_uppercat'] = 'NULL'; |
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531 | $plain_structure[$row['id']]['id_uppercat'] = $row['id_uppercat']; |
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532 | if ( $use_name ) $plain_structure[$row['id']]['name'] = $row['name']; |
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533 | // subcats list |
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534 | if ( $row['id_uppercat'] != $id_uppercat ) |
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535 | { |
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536 | $page['subcats'][$id_uppercat] = $subcats; |
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537 | |
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538 | $subcats = array(); |
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539 | $id_uppercat = $row['id_uppercat']; |
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540 | } |
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541 | array_push( $subcats, $row['id'] ); |
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542 | } |
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543 | mysql_free_result( $result ); |
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544 | |
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545 | $page['subcats'][$id_uppercat] = $subcats; |
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546 | |
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547 | return $plain_structure; |
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548 | } |
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549 | |
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550 | /** |
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551 | * get N levels array representing structure under the given category |
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552 | * |
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553 | * create_structure returns the N levels array representing structure under |
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554 | * the given gategory id. It also updates the |
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555 | * $page['plain_structure'][id]['all_subcats_id'] and |
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556 | * $page['plain_structure'][id]['direct_subcats_ids'] for each sub category. |
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557 | * |
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558 | * @param int $id_uppercat |
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559 | * @return array |
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560 | */ |
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561 | function create_structure( $id_uppercat ) |
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562 | { |
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563 | global $page; |
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564 | |
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565 | $structure = array(); |
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566 | $ids = get_subcats_ids( $id_uppercat ); |
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567 | foreach ( $ids as $id ) { |
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568 | $category = $page['plain_structure'][$id]; |
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569 | |
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570 | $category['subcats'] = create_structure( $id ); |
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571 | |
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572 | $page['plain_structure'][$id]['all_subcats_ids'] = |
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573 | get_all_subcats_ids( $id ); |
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574 | |
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575 | $page['plain_structure'][$id]['direct_subcats_ids'] = |
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576 | get_subcats_ids( $id ); |
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577 | |
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578 | array_push( $structure, $category ); |
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579 | } |
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580 | return $structure; |
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581 | } |
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582 | |
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583 | /** |
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584 | * returns direct sub-categories ids |
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585 | * |
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586 | * Returns an array containing all the direct sub-categories ids of the |
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587 | * given category. It uses the $page['subcats'] global array. |
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588 | * |
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589 | * @param int $id_uppercat |
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590 | * @return array |
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591 | */ |
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592 | function get_subcats_ids( $id_uppercat ) |
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593 | { |
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594 | global $page; |
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595 | |
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596 | if ( $id_uppercat == '' ) $id_uppercat = 'NULL'; |
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597 | |
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598 | if ( isset( $page['subcats'][$id_uppercat] ) ) |
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599 | return $page['subcats'][$id_uppercat]; |
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600 | else |
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601 | return array(); |
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602 | } |
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603 | |
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604 | /** |
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605 | * returns all sub-categories ids, not only direct ones |
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606 | * |
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607 | * Returns an array containing all the sub-categories ids of the given |
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608 | * category, not only direct ones. This function is recursive. |
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609 | * |
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610 | * @param int $category_id |
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611 | * @return array |
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612 | */ |
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613 | function get_all_subcats_ids( $category_id ) |
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614 | { |
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615 | $ids = array(); |
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616 | |
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617 | $subcats = get_subcats_ids( $category_id ); |
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618 | $ids = array_merge( $ids, $subcats ); |
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619 | foreach ( $subcats as $subcat ) { |
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620 | // recursive call |
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621 | $sub_subcats = get_all_subcats_ids( $subcat ); |
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622 | $ids = array_merge( $ids, $sub_subcats ); |
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623 | } |
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624 | return array_unique( $ids ); |
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625 | } |
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626 | |
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627 | /** |
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628 | * updates the column categories.uppercats |
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629 | * |
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630 | * @param int $category_id |
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631 | * @return void |
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632 | */ |
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633 | function update_uppercats( $category_id ) |
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634 | { |
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635 | global $page; |
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636 | |
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637 | $final_id = $category_id; |
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638 | $uppercats = array(); |
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639 | |
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640 | array_push( $uppercats, $category_id ); |
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641 | $uppercat = $page['plain_structure'][$category_id]['id_uppercat']; |
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642 | |
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643 | while ( $uppercat != 'NULL' ) |
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644 | { |
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645 | array_push( $uppercats, $uppercat ); |
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646 | $category_id = $page['plain_structure'][$category_id]['id_uppercat']; |
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647 | $uppercat = $page['plain_structure'][$category_id]['id_uppercat']; |
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648 | } |
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649 | |
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650 | $string_uppercats = implode( ',', array_reverse( $uppercats ) ); |
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651 | $query = 'UPDATE '.CATEGORIES_TABLE; |
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652 | $query.= ' SET uppercats = '."'".$string_uppercats."'"; |
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653 | $query.= ' WHERE id = '.$final_id; |
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654 | $query.= ';'; |
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655 | mysql_query( $query ); |
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656 | } |
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657 | |
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658 | /** |
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659 | * returns an array with the ids of the restricted categories for the user |
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660 | * |
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661 | * Returns an array with the ids of the restricted categories for the |
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662 | * user. If the $check_invisible parameter is set to true, invisible |
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663 | * categorie are added to the restricted one in the array. |
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664 | * |
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665 | * @param int $user_id |
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666 | * @param string $user_status |
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667 | * @param bool $check_invisible |
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668 | * @param bool $use_groups |
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669 | * @return array |
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670 | */ |
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671 | function get_user_restrictions( $user_id, $user_status, |
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672 | $check_invisible, $use_groups = true ) |
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673 | { |
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674 | // 1. retrieving ids of private categories |
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675 | $query = 'SELECT id FROM '.CATEGORIES_TABLE; |
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676 | $query.= " WHERE status = 'private'"; |
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677 | $query.= ';'; |
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678 | $result = mysql_query( $query ); |
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679 | $privates = array(); |
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680 | while ( $row = mysql_fetch_array( $result ) ) |
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681 | { |
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682 | array_push( $privates, $row['id'] ); |
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683 | } |
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684 | // 2. retrieving all authorized categories for the user |
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685 | $authorized = array(); |
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686 | // 2.1. retrieving authorized categories thanks to personnal user |
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687 | // authorization |
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688 | $query = 'SELECT cat_id FROM '.USER_ACCESS_TABLE; |
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689 | $query.= ' WHERE user_id = '.$user_id; |
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690 | $query.= ';'; |
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691 | $result = mysql_query( $query ); |
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692 | while ( $row = mysql_fetch_array( $result ) ) |
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693 | { |
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694 | array_push( $authorized, $row['cat_id'] ); |
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695 | } |
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696 | // 2.2. retrieving authorized categories thanks to group authorization to |
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697 | // which the user is a member |
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698 | if ( $use_groups ) |
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699 | { |
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700 | $query = 'SELECT ga.cat_id'; |
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701 | $query.= ' FROM '.USER_GROUP_TABLE.' as ug'; |
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702 | $query.= ', '.GROUP_ACCESS_TABLE.' as ga'; |
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703 | $query.= ' WHERE ug.group_id = ga.group_id'; |
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704 | $query.= ' AND ug.user_id = '.$user_id; |
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705 | $query.= ';'; |
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706 | $result = mysql_query( $query ); |
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707 | while ( $row = mysql_fetch_array( $result ) ) |
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708 | { |
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709 | array_push( $authorized, $row['cat_id'] ); |
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710 | } |
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711 | $authorized = array_unique( $authorized ); |
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712 | } |
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713 | |
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714 | $forbidden = array(); |
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715 | foreach ( $privates as $private ) { |
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716 | if ( !in_array( $private, $authorized ) ) |
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717 | { |
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718 | array_push( $forbidden, $private ); |
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719 | } |
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720 | } |
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721 | |
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722 | if ( $check_invisible ) |
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723 | { |
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724 | // 3. adding to the restricted categories, the invisible ones |
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725 | if ( $user_status != 'admin' ) |
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726 | { |
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727 | $query = 'SELECT id FROM '.CATEGORIES_TABLE; |
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728 | $query.= " WHERE visible = 'false';"; |
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729 | $result = mysql_query( $query ); |
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730 | while ( $row = mysql_fetch_array( $result ) ) |
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731 | { |
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732 | array_push( $forbidden, $row['id'] ); |
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733 | } |
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734 | } |
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735 | } |
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736 | return array_unique( $forbidden ); |
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737 | } |
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738 | |
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739 | /** |
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740 | * updates the calculated data users.forbidden_categories, it includes |
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741 | * sub-categories of the direct forbidden categories |
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742 | * |
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743 | * @param nt $user_id |
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744 | * @return array |
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745 | */ |
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746 | function update_user_restrictions( $user_id ) |
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747 | { |
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748 | $restrictions = get_user_all_restrictions( $user_id ); |
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749 | |
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750 | // update the users.forbidden_categories in database |
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751 | $query = 'UPDATE '.USERS_TABLE; |
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752 | $query.= ' SET forbidden_categories = '; |
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753 | if ( count( $restrictions ) > 0 ) |
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754 | $query.= "'".implode( ',', $restrictions )."'"; |
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755 | else |
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756 | $query.= 'NULL'; |
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757 | $query .= ' WHERE id = '.$user_id; |
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758 | $query.= ';'; |
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759 | mysql_query( $query ); |
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760 | |
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761 | return $restrictions; |
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762 | } |
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763 | |
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764 | /** |
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765 | * returns all the restricted categories ids including sub-categories |
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766 | * |
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767 | * @param int $user_id |
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768 | * @return array |
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769 | */ |
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770 | function get_user_all_restrictions( $user_id ) |
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771 | { |
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772 | global $page; |
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773 | |
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774 | $query = 'SELECT status'; |
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775 | $query.= ' FROM '.USERS_TABLE; |
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776 | $query.= ' WHERE id = '.$user_id; |
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777 | $query.= ';'; |
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778 | $row = mysql_fetch_array( mysql_query( $query ) ); |
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779 | |
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780 | $base_restrictions=get_user_restrictions($user_id,$row['status'],true,true); |
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781 | |
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782 | $restrictions = $base_restrictions; |
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783 | foreach ( $base_restrictions as $category_id ) { |
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784 | echo $category_id.' is forbidden to user '.$user_id.'<br />'; |
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785 | $restrictions = |
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786 | array_merge( $restrictions, |
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787 | $page['plain_structure'][$category_id]['all_subcats_ids'] ); |
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788 | } |
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789 | |
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790 | return array_unique( $restrictions ); |
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791 | } |
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792 | |
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793 | // The function is_user_allowed returns : |
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794 | // - 0 : if the category is allowed with this $restrictions array |
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795 | // - 1 : if this category is not allowed |
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796 | // - 2 : if an uppercat category is not allowed |
---|
797 | // Note : the restrictions array must represent ONLY direct forbidden |
---|
798 | // categories, not all forbidden categories |
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799 | function is_user_allowed( $category_id, $restrictions ) |
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800 | { |
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801 | if ( in_array( $category_id, $restrictions ) ) return 1; |
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802 | |
---|
803 | $query = 'SELECT uppercats'; |
---|
804 | $query.= ' FROM '.CATEGORIES_TABLE; |
---|
805 | $query.= ' WHERE id = '.$category_id; |
---|
806 | $query.= ';'; |
---|
807 | $row = mysql_fetch_array( mysql_query( $query ) ); |
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808 | $uppercats = explode( ',', $row['uppercats'] ); |
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809 | foreach ( $uppercats as $category_id ) { |
---|
810 | if ( in_array( $category_id, $restrictions ) ) return 2; |
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811 | } |
---|
812 | |
---|
813 | // no restriction found : the user is allowed to access this category |
---|
814 | return 0; |
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815 | } |
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816 | |
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817 | /** |
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818 | * returns an array containing sub-directories which can be a category |
---|
819 | * |
---|
820 | * directories nammed "thumbnail" are omitted |
---|
821 | * |
---|
822 | * @param string $basedir |
---|
823 | * @return array |
---|
824 | */ |
---|
825 | function get_category_directories( $basedir ) |
---|
826 | { |
---|
827 | $sub_dirs = array(); |
---|
828 | |
---|
829 | if ( $opendir = opendir( $basedir ) ) |
---|
830 | { |
---|
831 | while ( $file = readdir( $opendir ) ) |
---|
832 | { |
---|
833 | if ( $file != '.' and $file != '..' |
---|
834 | and is_dir( $basedir.'/'.$file ) |
---|
835 | and $file != 'thumbnail' ) |
---|
836 | { |
---|
837 | array_push( $sub_dirs, $file ); |
---|
838 | } |
---|
839 | } |
---|
840 | } |
---|
841 | return $sub_dirs; |
---|
842 | } |
---|
843 | ?> |
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