1 | <?php |
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2 | // +-----------------------------------------------------------------------+ |
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3 | // | Piwigo - a PHP based photo gallery | |
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4 | // +-----------------------------------------------------------------------+ |
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5 | // | Copyright(C) 2008-2012 Piwigo Team http://piwigo.org | |
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6 | // +-----------------------------------------------------------------------+ |
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7 | // | This program is free software; you can redistribute it and/or modify | |
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8 | // | it under the terms of the GNU General Public License as published by | |
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9 | // | the Free Software Foundation | |
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10 | // | | |
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11 | // | This program is distributed in the hope that it will be useful, but | |
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12 | // | WITHOUT ANY WARRANTY; without even the implied warranty of | |
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13 | // | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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14 | // | General Public License for more details. | |
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15 | // | | |
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16 | // | You should have received a copy of the GNU General Public License | |
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17 | // | along with this program; if not, write to the Free Software | |
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18 | // | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, | |
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19 | // | USA. | |
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20 | // +-----------------------------------------------------------------------+ |
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21 | |
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22 | define('PHPWG_ROOT_PATH','./'); |
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23 | |
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24 | // fast bootstrap - no db connection |
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25 | include(PHPWG_ROOT_PATH . 'include/config_default.inc.php'); |
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26 | @include(PHPWG_ROOT_PATH. 'local/config/config.inc.php'); |
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27 | |
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28 | defined('PWG_LOCAL_DIR') or define('PWG_LOCAL_DIR', 'local/'); |
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29 | defined('PWG_DERIVATIVE_DIR') or define('PWG_DERIVATIVE_DIR', $conf['data_location'].'i/'); |
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30 | |
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31 | function trigger_action() {} |
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32 | function get_extension( $filename ) |
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33 | { |
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34 | return substr( strrchr( $filename, '.' ), 1, strlen ( $filename ) ); |
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35 | } |
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36 | |
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37 | function mkgetdir($dir) |
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38 | { |
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39 | if ( !is_dir($dir) ) |
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40 | { |
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41 | global $conf; |
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42 | if (substr(PHP_OS, 0, 3) == 'WIN') |
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43 | { |
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44 | $dir = str_replace('/', DIRECTORY_SEPARATOR, $dir); |
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45 | } |
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46 | $umask = umask(0); |
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47 | $mkd = @mkdir($dir, $conf['chmod_value'], true); |
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48 | umask($umask); |
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49 | if ($mkd==false) |
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50 | { |
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51 | return false; |
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52 | } |
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53 | |
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54 | $file = $dir.'/index.htm'; |
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55 | file_exists($file) or @file_put_contents( $file, 'Not allowed!' ); |
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56 | } |
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57 | if ( !is_writable($dir) ) |
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58 | { |
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59 | return false; |
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60 | } |
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61 | return true; |
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62 | } |
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63 | |
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64 | // end fast bootstrap |
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65 | |
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66 | function ilog() |
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67 | { |
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68 | global $conf; |
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69 | if (!$conf['enable_i_log']) return; |
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70 | |
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71 | $line = date("c"); |
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72 | foreach( func_get_args() as $arg) |
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73 | { |
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74 | $line .= ' '; |
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75 | if (is_array($arg)) |
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76 | { |
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77 | $line .= implode(' ', $arg); |
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78 | } |
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79 | else |
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80 | { |
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81 | $line .= $arg; |
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82 | } |
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83 | } |
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84 | $file=PHPWG_ROOT_PATH.$conf['data_location'].'tmp/i.log'; |
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85 | if (false == file_put_contents($file, $line."\n", FILE_APPEND)) |
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86 | { |
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87 | mkgetdir(dirname($file)); |
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88 | } |
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89 | } |
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90 | |
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91 | function ierror($msg, $code) |
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92 | { |
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93 | if ($code==301 || $code==302) |
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94 | { |
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95 | if (ob_get_length () !== FALSE) |
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96 | { |
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97 | ob_clean(); |
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98 | } |
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99 | // default url is on html format |
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100 | $url = html_entity_decode($msg); |
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101 | header('Request-URI: '.$url); |
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102 | header('Content-Location: '.$url); |
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103 | header('Location: '.$url); |
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104 | exit; |
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105 | } |
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106 | if ($code>=400) |
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107 | { |
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108 | $protocol = $_SERVER["SERVER_PROTOCOL"]; |
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109 | if ( ('HTTP/1.1' != $protocol) && ('HTTP/1.0' != $protocol) ) |
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110 | $protocol = 'HTTP/1.0'; |
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111 | |
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112 | header( "$protocol $code $msg", true, $code ); |
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113 | } |
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114 | //todo improve |
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115 | echo $msg; |
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116 | exit; |
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117 | } |
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118 | |
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119 | function time_step( &$step ) |
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120 | { |
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121 | $tmp = $step; |
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122 | $step = microtime(true); |
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123 | return intval(1000*($step - $tmp)); |
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124 | } |
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125 | |
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126 | function url_to_size($s) |
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127 | { |
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128 | $pos = strpos($s, 'x'); |
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129 | if ($pos===false) |
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130 | { |
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131 | return array((int)$s, (int)$s); |
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132 | } |
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133 | return array((int)substr($s,0,$pos), (int)substr($s,$pos+1)); |
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134 | } |
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135 | |
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136 | function parse_custom_params($tokens) |
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137 | { |
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138 | if (count($tokens)<1) |
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139 | ierror('Empty array while parsing Sizing', 400); |
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140 | |
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141 | $crop = 0; |
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142 | $min_size = null; |
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143 | |
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144 | $token = array_shift($tokens); |
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145 | if ($token[0]=='s') |
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146 | { |
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147 | $size = url_to_size( substr($token,1) ); |
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148 | } |
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149 | elseif ($token[0]=='e') |
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150 | { |
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151 | $crop = 1; |
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152 | $size = $min_size = url_to_size( substr($token,1) ); |
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153 | } |
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154 | else |
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155 | { |
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156 | $size = url_to_size( $token ); |
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157 | if (count($tokens)<2) |
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158 | ierror('Sizing arr', 400); |
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159 | |
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160 | $token = array_shift($tokens); |
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161 | $crop = char_to_fraction($token); |
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162 | |
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163 | $token = array_shift($tokens); |
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164 | $min_size = url_to_size( $token ); |
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165 | } |
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166 | return new DerivativeParams( new SizingParams($size, $crop, $min_size) ); |
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167 | } |
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168 | |
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169 | function parse_request() |
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170 | { |
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171 | global $conf, $page; |
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172 | |
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173 | if ( $conf['question_mark_in_urls']==false and |
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174 | isset($_SERVER["PATH_INFO"]) and !empty($_SERVER["PATH_INFO"]) ) |
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175 | { |
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176 | $req = $_SERVER["PATH_INFO"]; |
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177 | $req = str_replace('//', '/', $req); |
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178 | $path_count = count( explode('/', $req) ); |
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179 | $page['root_path'] = PHPWG_ROOT_PATH.str_repeat('../', $path_count-1); |
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180 | } |
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181 | else |
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182 | { |
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183 | $req = $_SERVER["QUERY_STRING"]; |
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184 | if ($pos=strpos($req, '&')) |
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185 | { |
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186 | $req = substr($req, 0, $pos); |
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187 | } |
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188 | /*foreach (array_keys($_GET) as $keynum => $key) |
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189 | { |
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190 | $req = $key; |
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191 | break; |
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192 | }*/ |
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193 | $page['root_path'] = PHPWG_ROOT_PATH; |
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194 | } |
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195 | |
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196 | $req = ltrim($req, '/'); |
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197 | !preg_match('#[^a-zA-Z0-9/_.-]#', $req) or ierror('Invalid chars in request', 400); |
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198 | |
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199 | $page['derivative_path'] = PHPWG_ROOT_PATH.PWG_DERIVATIVE_DIR.$req; |
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200 | |
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201 | $pos = strrpos($req, '.'); |
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202 | $pos!== false || ierror('Missing .', 400); |
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203 | $ext = substr($req, $pos); |
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204 | $page['derivative_ext'] = $ext; |
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205 | $req = substr($req, 0, $pos); |
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206 | |
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207 | $pos = strrpos($req, '-'); |
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208 | $pos!== false || ierror('Missing -', 400); |
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209 | $deriv = substr($req, $pos+1); |
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210 | $req = substr($req, 0, $pos); |
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211 | |
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212 | $deriv = explode('_', $deriv); |
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213 | foreach (ImageStdParams::get_defined_type_map() as $type => $params) |
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214 | { |
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215 | if ( derivative_to_url($type) == $deriv[0]) |
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216 | { |
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217 | $page['derivative_type'] = $type; |
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218 | $page['derivative_params'] = $params; |
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219 | break; |
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220 | } |
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221 | } |
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222 | |
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223 | if (!isset($page['derivative_type'])) |
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224 | { |
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225 | if (derivative_to_url(IMG_CUSTOM) == $deriv[0]) |
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226 | { |
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227 | $page['derivative_type'] = IMG_CUSTOM; |
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228 | } |
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229 | else |
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230 | { |
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231 | ierror('Unknown parsing type', 400); |
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232 | } |
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233 | } |
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234 | array_shift($deriv); |
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235 | |
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236 | if ($page['derivative_type'] == IMG_CUSTOM) |
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237 | { |
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238 | $params = $page['derivative_params'] = parse_custom_params($deriv); |
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239 | |
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240 | if ($params->sizing->ideal_size[0] < 20 or $params->sizing->ideal_size[1] < 20) |
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241 | { |
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242 | ierror('Invalid size', 400); |
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243 | } |
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244 | if ($params->sizing->max_crop < 0 or $params->sizing->max_crop > 1) |
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245 | { |
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246 | ierror('Invalid crop', 400); |
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247 | } |
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248 | $greatest = ImageStdParams::get_by_type(IMG_XXLARGE); |
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249 | |
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250 | $key = array(); |
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251 | $params->add_url_tokens($key); |
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252 | $key = implode('_', $key); |
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253 | if (!isset(ImageStdParams::$custom[$key])) |
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254 | { |
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255 | ierror('Size not allowed', 403); |
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256 | } |
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257 | } |
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258 | |
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259 | if (is_file(PHPWG_ROOT_PATH.$req.$ext)) |
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260 | { |
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261 | $req = './'.$req; // will be used to match #iamges.path |
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262 | } |
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263 | elseif (is_file(PHPWG_ROOT_PATH.'../'.$req.$ext)) |
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264 | { |
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265 | $req = '../'.$req; |
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266 | } |
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267 | |
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268 | $page['src_location'] = $req.$ext; |
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269 | $page['src_path'] = PHPWG_ROOT_PATH.$page['src_location']; |
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270 | $page['src_url'] = $page['root_path'].$page['src_location']; |
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271 | } |
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272 | |
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273 | function try_switch_source(DerivativeParams $params, $original_mtime) |
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274 | { |
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275 | global $page; |
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276 | $candidates = array(); |
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277 | foreach(ImageStdParams::get_defined_type_map() as $candidate) |
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278 | { |
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279 | if ($candidate->type == $params->type) |
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280 | continue; |
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281 | if ($candidate->use_watermark != $params->use_watermark) |
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282 | continue; |
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283 | if ($candidate->max_width() < $params->max_width() || $candidate->max_height() < $params->max_height()) |
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284 | continue; |
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285 | if ($params->sizing->max_crop==0) |
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286 | { |
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287 | if ($candidate->sizing->max_crop!=0) |
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288 | continue; |
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289 | } |
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290 | else |
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291 | { |
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292 | if ($candidate->sizing->max_crop!=0) |
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293 | continue; // this could be optimized |
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294 | if (!isset($page['original_size'])) |
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295 | continue; |
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296 | $candidate_size = $candidate->compute_final_size($page['original_size']); |
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297 | if ($candidate_size[0] < $params->sizing->min_size[0] || $candidate_size[1] < $params->sizing->min_size[1] ) |
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298 | continue; |
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299 | } |
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300 | $candidates[] = $candidate; |
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301 | } |
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302 | |
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303 | foreach( array_reverse($candidates) as $candidate) |
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304 | { |
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305 | $candidate_path = $page['derivative_path']; |
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306 | $candidate_path = str_replace( '-'.derivative_to_url($params->type), '-'.derivative_to_url($candidate->type), $candidate_path); |
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307 | $candidate_mtime = @filemtime($candidate_path); |
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308 | if ($candidate_mtime === false |
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309 | || $candidate_mtime < $original_mtime |
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310 | || $candidate_mtime < $candidate->last_mod_time) |
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311 | continue; |
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312 | $params->use_watermark = false; |
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313 | $params->sharpen = min(1, $params->sharpen); |
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314 | $page['src_path'] = $candidate_path; |
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315 | $page['src_url'] = $page['root_path'] . substr($candidate_path, strlen(PHPWG_ROOT_PATH)); |
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316 | } |
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317 | } |
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318 | |
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319 | function send_derivative($expires) |
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320 | { |
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321 | global $page; |
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322 | $fp = fopen($page['derivative_path'], 'rb'); |
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323 | |
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324 | $fstat = fstat($fp); |
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325 | header('Last-Modified: '.gmdate('D, d M Y H:i:s', $fstat['mtime']).' GMT'); |
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326 | if ($expires!==false) |
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327 | { |
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328 | header('Expires: '.gmdate('D, d M Y H:i:s', $expires).' GMT'); |
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329 | } |
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330 | header('Content-length: '.$fstat['size']); |
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331 | header('Connection: close'); |
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332 | |
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333 | $ctype="application/octet-stream"; |
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334 | switch (strtolower($page['derivative_ext'])) |
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335 | { |
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336 | case ".jpe": case ".jpeg": case ".jpg": $ctype="image/jpeg"; break; |
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337 | case ".png": $ctype="image/png"; break; |
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338 | case ".gif": $ctype="image/gif"; break; |
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339 | } |
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340 | header("Content-Type: $ctype"); |
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341 | |
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342 | fpassthru($fp); |
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343 | fclose($fp); |
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344 | } |
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345 | |
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346 | |
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347 | $page=array(); |
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348 | $begin = $step = microtime(true); |
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349 | $timing=array(); |
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350 | foreach( explode(',','load,rotate,crop,scale,sharpen,watermark,save,send') as $k ) |
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351 | { |
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352 | $timing[$k] = ''; |
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353 | } |
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354 | |
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355 | include_once( PHPWG_ROOT_PATH .'/include/derivative_params.inc.php'); |
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356 | include_once( PHPWG_ROOT_PATH .'/include/derivative_std_params.inc.php'); |
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357 | |
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358 | ImageStdParams::load_from_file(); |
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359 | |
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360 | |
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361 | parse_request(); |
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362 | //var_export($page); |
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363 | |
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364 | $params = $page['derivative_params']; |
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365 | |
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366 | $src_mtime = @filemtime($page['src_path']); |
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367 | if ($src_mtime === false) |
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368 | { |
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369 | ierror('Source not found', 404); |
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370 | } |
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371 | |
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372 | $need_generate = false; |
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373 | $derivative_mtime = @filemtime($page['derivative_path']); |
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374 | if ($derivative_mtime === false or |
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375 | $derivative_mtime < $src_mtime or |
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376 | $derivative_mtime < $params->last_mod_time) |
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377 | { |
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378 | $need_generate = true; |
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379 | } |
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380 | |
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381 | $expires=false; |
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382 | $now = time(); |
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383 | if ( isset($_GET['b']) ) |
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384 | { |
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385 | $expires = $now + 100; |
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386 | header("Cache-control: no-store, max-age=100"); |
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387 | } |
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388 | elseif ( $now > (max($src_mtime, $params->last_mod_time) + 24*3600) ) |
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389 | {// somehow arbitrary - if derivative params or src didn't change for the last 24 hours, we send an expire header for several days |
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390 | $expires = $now + 10*24*3600; |
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391 | } |
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392 | |
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393 | if (!$need_generate) |
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394 | { |
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395 | if ( isset( $_SERVER['HTTP_IF_MODIFIED_SINCE'] ) |
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396 | and strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) == $derivative_mtime) |
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397 | {// send the last mod time of the file back |
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398 | header('Last-Modified: '.gmdate('D, d M Y H:i:s', $derivative_mtime).' GMT', true, 304); |
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399 | header('Expires: '.gmdate('D, d M Y H:i:s', time()+10*24*3600).' GMT', true, 304); |
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400 | exit; |
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401 | } |
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402 | send_derivative($expires); |
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403 | } |
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404 | |
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405 | $page['coi'] = null; |
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406 | if (strpos($page['src_location'], '/pwg_representative/')===false |
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407 | && strpos($page['src_location'], 'themes/')===false |
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408 | && strpos($page['src_location'], 'plugins/')===false) |
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409 | { |
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410 | @include(PHPWG_ROOT_PATH.PWG_LOCAL_DIR .'config/database.inc.php'); |
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411 | include(PHPWG_ROOT_PATH .'include/dblayer/functions_'.$conf['dblayer'].'.inc.php'); |
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412 | try |
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413 | { |
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414 | $pwg_db_link = pwg_db_connect($conf['db_host'], $conf['db_user'], |
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415 | $conf['db_password'], $conf['db_base']); |
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416 | $query = 'SELECT coi, width, height FROM '.$prefixeTable.'images WHERE path=\''.$page['src_location'].'\''; |
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417 | if ( ($row=pwg_db_fetch_assoc(pwg_query($query))) ) |
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418 | { |
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419 | if (isset($row['width'])) |
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420 | { |
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421 | $page['original_size'] = array($row['width'],$row['height']); |
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422 | } |
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423 | $page['coi'] = $row['coi']; |
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424 | } |
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425 | mysql_close($pwg_db_link); |
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426 | if (!$row) |
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427 | { |
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428 | ierror('Db file path not found', 404); |
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429 | } |
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430 | } |
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431 | catch (Exception $e) |
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432 | { |
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433 | ilog("db error", $e->getMessage()); |
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434 | } |
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435 | } |
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436 | |
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437 | try_switch_source($params, $src_mtime); |
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438 | |
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439 | if (!mkgetdir(dirname($page['derivative_path']))) |
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440 | { |
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441 | ierror("dir create error", 500); |
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442 | } |
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443 | |
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444 | include_once(PHPWG_ROOT_PATH . 'admin/include/image.class.php'); |
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445 | |
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446 | ignore_user_abort(true); |
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447 | set_time_limit(0); |
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448 | |
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449 | $image = new pwg_image($page['src_path']); |
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450 | $timing['load'] = time_step($step); |
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451 | |
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452 | $changes = 0; |
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453 | |
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454 | // todo rotate |
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455 | |
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456 | // Crop & scale |
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457 | $o_size = $d_size = array($image->get_width(),$image->get_height()); |
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458 | $params->sizing->compute($o_size , $page['coi'], $crop_rect, $scaled_size ); |
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459 | if ($crop_rect) |
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460 | { |
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461 | $changes++; |
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462 | $image->crop( $crop_rect->width(), $crop_rect->height(), $crop_rect->l, $crop_rect->t); |
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463 | $timing['crop'] = time_step($step); |
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464 | } |
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465 | |
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466 | if ($scaled_size) |
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467 | { |
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468 | $changes++; |
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469 | $image->resize( $scaled_size[0], $scaled_size[1] ); |
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470 | $d_size = $scaled_size; |
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471 | $timing['scale'] = time_step($step); |
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472 | } |
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473 | |
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474 | if ($params->sharpen) |
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475 | { |
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476 | $changes += $image->sharpen( $params->sharpen ); |
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477 | $timing['sharpen'] = time_step($step); |
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478 | } |
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479 | |
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480 | if ($params->use_watermark) |
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481 | { |
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482 | $wm = ImageStdParams::get_watermark(); |
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483 | $wm_image = new pwg_image(PHPWG_ROOT_PATH.$wm->file); |
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484 | $wm_size = array($wm_image->get_width(),$wm_image->get_height()); |
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485 | if ($d_size[0]<$wm_size[0] or $d_size[1]<$wm_size[1]) |
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486 | { |
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487 | $wm_scaling_params = SizingParams::classic($d_size[0], $d_size[1]); |
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488 | $wm_scaling_params->compute($wm_size, null, $tmp, $wm_scaled_size); |
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489 | $wm_size = $wm_scaled_size; |
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490 | $wm_image->resize( $wm_scaled_size[0], $wm_scaled_size[1] ); |
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491 | } |
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492 | $x = round( ($wm->xpos/100)*($d_size[0]-$wm_size[0]) ); |
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493 | $y = round( ($wm->ypos/100)*($d_size[1]-$wm_size[1]) ); |
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494 | if ($image->compose($wm_image, $x, $y, $wm->opacity)) |
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495 | { |
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496 | $changes++; |
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497 | if ($wm->xrepeat) |
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498 | { |
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499 | // todo |
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500 | $pad = $wm_size[0] + max(30, round($wm_size[0]/4)); |
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501 | for($i=-$wm->xrepeat; $i<=$wm->xrepeat; $i++) |
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502 | { |
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503 | if (!$i) continue; |
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504 | $x2 = $x + $i * $pad; |
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505 | if ($x2>=0 && $x2+$wm_size[0]<$d_size[0]) |
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506 | if (!$image->compose($wm_image, $x2, $y, $wm->opacity)) |
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507 | break; |
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508 | } |
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509 | } |
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510 | } |
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511 | $wm_image->destroy(); |
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512 | $timing['watermark'] = time_step($step); |
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513 | } |
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514 | |
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515 | // no change required - redirect to source |
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516 | if (!$changes) |
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517 | { |
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518 | header("X-i: No change"); |
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519 | ierror( $page['src_url'], 301); |
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520 | } |
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521 | |
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522 | if ($d_size[0]*$d_size[1] < 100000) |
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523 | {// strip metadata for small images |
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524 | $image->strip(); |
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525 | } |
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526 | $image->set_compression_quality( $params->quality ); |
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527 | $image->write( $page['derivative_path'] ); |
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528 | $image->destroy(); |
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529 | $timing['save'] = time_step($step); |
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530 | |
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531 | send_derivative($expires); |
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532 | $timing['send'] = time_step($step); |
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533 | |
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534 | ilog('perf', |
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535 | basename($page['src_path']), $o_size, $o_size[0]*$o_size[1], |
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536 | basename($page['derivative_path']), $d_size, $d_size[0]*$d_size[1], |
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537 | function_exists('memory_get_peak_usage') ? round( memory_get_peak_usage()/(1024*1024), 1) : '', |
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538 | time_step($begin), |
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539 | '|', $timing); |
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540 | ?> |
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