1<?php 2/** 3 * Initialize some defaults needed for DokuWiki 4 */ 5 6 // start timing Dokuwiki execution 7 function delta_time($start=0) { 8 list($usec, $sec) = explode(" ", microtime()); 9 return ((float)$usec+(float)$sec)-((float)$start); 10 } 11 define('DOKU_START_TIME', delta_time()); 12 13 // define the include path 14 if(!defined('DOKU_INC')) define('DOKU_INC',realpath(dirname(__FILE__).'/../').'/'); 15 16 // define config path (packagers may want to change this to /etc/dokuwiki/) 17 if(!defined('DOKU_CONF')) define('DOKU_CONF',DOKU_INC.'conf/'); 18 19 // set up error reporting to sane values 20 error_reporting(E_ALL ^ E_NOTICE); 21 22 //prepare config array() 23 global $conf; 24 $conf = array(); 25 26 // load the config file(s) 27 require_once(DOKU_CONF.'dokuwiki.php'); 28 if(@file_exists(DOKU_CONF.'local.php')){ 29 require_once(DOKU_CONF.'local.php'); 30 } 31 32 //prepare language array 33 global $lang; 34 $lang = array(); 35 36 //load the language files 37 require_once(DOKU_INC.'inc/lang/en/lang.php'); 38 if ( $conf['lang'] && $conf['lang'] != 'en' ) { 39 require_once(DOKU_INC.'inc/lang/'.$conf['lang'].'/lang.php'); 40 } 41 42 // define baseURL 43 if(!defined('DOKU_BASE')) define('DOKU_BASE',getBaseURL()); 44 if(!defined('DOKU_URL')) define('DOKU_URL',getBaseURL(true)); 45 46 // define Plugin dir 47 if(!defined('DOKU_PLUGIN')) define('DOKU_PLUGIN',DOKU_INC.'lib/plugins/'); 48 49 // define main script 50 if(!defined('DOKU_SCRIPT')) define('DOKU_SCRIPT','doku.php'); 51 52 // define Template baseURL 53 if(!defined('DOKU_TPL')) define('DOKU_TPL', 54 DOKU_BASE.'lib/tpl/'.$conf['template'].'/'); 55 56 // define real Template directory 57 if(!defined('DOKU_TPLINC')) define('DOKU_TPLINC', 58 DOKU_INC.'lib/tpl/'.$conf['template'].'/'); 59 60 // make session rewrites XHTML compliant 61 @ini_set('arg_separator.output', '&'); 62 63 // enable gzip compression 64 if ($conf['gzip_output'] && 65 !defined('DOKU_DISABLE_GZIP_OUTPUT') && 66 function_exists('ob_gzhandler') && 67 preg_match('/gzip|deflate/', $_SERVER['HTTP_ACCEPT_ENCODING'])) { 68 ob_start('ob_gzhandler'); 69 } 70 71 // init session 72 if (!headers_sent() && !defined('NOSESSION')){ 73 session_name("DokuWiki"); 74 session_start(); 75 } 76 77 // kill magic quotes 78 if (get_magic_quotes_gpc() && !defined('MAGIC_QUOTES_STRIPPED')) { 79 if (!empty($_GET)) remove_magic_quotes($_GET); 80 if (!empty($_POST)) remove_magic_quotes($_POST); 81 if (!empty($_COOKIE)) remove_magic_quotes($_COOKIE); 82 if (!empty($_REQUEST)) remove_magic_quotes($_REQUEST); 83# if (!empty($_SESSION)) remove_magic_quotes($_SESSION); #FIXME needed ? 84 @ini_set('magic_quotes_gpc', 0); 85 define('MAGIC_QUOTES_STRIPPED',1); 86 } 87 @set_magic_quotes_runtime(0); 88 @ini_set('magic_quotes_sybase',0); 89 90 // disable gzip if not available 91 if($conf['usegzip'] && !function_exists('gzopen')){ 92 $conf['usegzip'] = 0; 93 } 94 95 // precalculate file creation modes 96 init_creationmodes(); 97 98 // make real paths and check them 99 init_paths(); 100 init_files(); 101 102 // automatic upgrade to script versions of certain files 103 scriptify(DOKU_CONF.'users.auth'); 104 scriptify(DOKU_CONF.'acl.auth'); 105 106 107/** 108 * Checks paths from config file 109 */ 110function init_paths(){ 111 global $conf; 112 113 $paths = array('datadir' => 'pages', 114 'olddir' => 'attic', 115 'mediadir' => 'media', 116 'metadir' => 'meta', 117 'cachedir' => 'cache', 118 'lockdir' => 'locks', 119 'changelog' => 'changes.log'); 120 121 foreach($paths as $c => $p){ 122 if(!$conf[$c]) $conf[$c] = $conf['savedir'].'/'.$p; 123 $conf[$c] = init_path($conf[$c]); 124 if(!$conf[$c]) nice_die("The $c does not exist, isn't accessable or writable. 125 Check your config and permission settings!"); 126 } 127} 128 129/** 130 * Checks the existance of certain files and creates them if missing. 131 */ 132function init_files(){ 133 global $conf; 134 135 $files = array( $conf['cachedir'].'/word.idx', 136 $conf['cachedir'].'/page.idx', 137 $conf['cachedir'].'/index.idx'); 138 139 foreach($files as $file){ 140 if(!@file_exists($file)){ 141 $fh = @fopen($file,'a'); 142 if($fh){ 143 fclose($fh); 144 if($conf['fperm']) chmod($file, $conf['fperm']); 145 }else{ 146 nice_die("$file is not writable. Check your permissions settings!"); 147 } 148 } 149 } 150} 151 152/** 153 * Returns absolute path 154 * 155 * This tries the given path first, then checks in DOKU_INC. 156 * Check for accessability on directories as well. 157 * 158 * @author Andreas Gohr <andi@splitbrain.org> 159 */ 160function init_path($path){ 161 // check existance 162 $p = realpath($path); 163 if(!@file_exists($p)){ 164 $p = realpath(DOKU_INC.$path); 165 if(!@file_exists($p)){ 166 return ''; 167 } 168 } 169 170 // check writability 171 if(!@is_writable($p)){ 172 return ''; 173 } 174 175 // check accessability (execute bit) for directories 176 if(@is_dir($p) && !@file_exists("$p/.")){ 177 return ''; 178 } 179 180 return $p; 181} 182 183/** 184 * Sets the internal config values fperm and dperm which, when set, 185 * will be used to change the permission of a newly created dir or 186 * file with chmod. Considers the influence of the system's umask 187 * setting the values only if needed. 188 */ 189function init_creationmodes(){ 190 global $conf; 191 192 // Legacy support for old umask/dmask scheme 193 unset($conf['dmask']); 194 unset($conf['fmask']); 195 unset($conf['umask']); 196 unset($conf['fperm']); 197 unset($conf['dperm']); 198 199 // get system umask, fallback to 0 if none available 200 $umask = @umask(); 201 if(!$umask) $umask = 0000; 202 203 // check what is set automatically by the system on file creation 204 // and set the fperm param if it's not what we want 205 $auto_fmode = 0666 & ~$umask; 206 if($auto_fmode != $conf['fmode']) $conf['fperm'] = $conf['fmode']; 207 208 // check what is set automatically by the system on file creation 209 // and set the dperm param if it's not what we want 210 $auto_dmode = $conf['dmode'] & ~$umask; 211 if($auto_dmode != $conf['dmode']) $conf['dperm'] = $conf['dmode']; 212} 213 214/** 215 * remove magic quotes recursivly 216 * 217 * @author Andreas Gohr <andi@splitbrain.org> 218 */ 219function remove_magic_quotes(&$array) { 220 foreach (array_keys($array) as $key) { 221 if (is_array($array[$key])) { 222 remove_magic_quotes($array[$key]); 223 }else { 224 $array[$key] = stripslashes($array[$key]); 225 } 226 } 227} 228 229/** 230 * Returns the full absolute URL to the directory where 231 * DokuWiki is installed in (includes a trailing slash) 232 * 233 * @author Andreas Gohr <andi@splitbrain.org> 234 */ 235function getBaseURL($abs=false){ 236 global $conf; 237 //if canonical url enabled always return absolute 238 if($conf['canonical']) $abs = true; 239 240 if($conf['basedir']){ 241 $dir = $conf['basedir'].'/'; 242 }elseif(substr($_SERVER['SCRIPT_NAME'],-4) == '.php'){ 243 $dir = dirname($_SERVER['SCRIPT_NAME']).'/'; 244 }elseif(substr($_SERVER['PHP_SELF'],-4) == '.php'){ 245 $dir = dirname($_SERVER['PHP_SELF']).'/'; 246 }elseif($_SERVER['DOCUMENT_ROOT'] && $_SERVER['SCRIPT_FILENAME']){ 247 $dir = preg_replace ('/^'.preg_quote($_SERVER['DOCUMENT_ROOT'],'/').'/','', 248 $_SERVER['SCRIPT_FILENAME']); 249 $dir = dirname('/'.$dir).'/'; 250 }else{ 251 $dir = './'; //probably wrong 252 } 253 254 $dir = str_replace('\\','/',$dir); #bugfix for weird WIN behaviour 255 $dir = preg_replace('#//+#','/',$dir); 256 257 //handle script in lib/exe dir 258 $dir = preg_replace('!lib/exe/$!','',$dir); 259 260 //finish here for relative URLs 261 if(!$abs) return $dir; 262 263 //use config option if available 264 if($conf['baseurl']) return $conf['baseurl'].$dir; 265 266 //split hostheader into host and port 267 list($host,$port) = explode(':',$_SERVER['HTTP_HOST']); 268 if(!$port) $port = $_SERVER['SERVER_PORT']; 269 if(!$port) $port = 80; 270 271 // see if HTTPS is enabled - apache leaves this empty when not available, 272 // IIS sets it to 'off', 'false' and 'disabled' are just guessing 273 if (preg_match('/^(|off|false|disabled)$/i',$_SERVER['HTTPS'])){ 274 $proto = 'http://'; 275 if ($port == '80') { 276 $port=''; 277 } 278 }else{ 279 $proto = 'https://'; 280 if ($port == '443') { 281 $port=''; 282 } 283 } 284 285 if($port) $port = ':'.$port; 286 287 return $proto.$host.$port.$dir; 288} 289 290/** 291 * Append a PHP extension to a given file and adds an exit call 292 * 293 * This is used to migrate some old configfiles. An added PHP extension 294 * ensures the contents are not shown to webusers even if .htaccess files 295 * do not work 296 * 297 * @author Jan Decaluwe <jan@jandecaluwe.com> 298 */ 299function scriptify($file) { 300 // checks 301 if (!is_readable($file)) { 302 return; 303 } 304 $fn = $file.'.php'; 305 if (@file_exists($fn)) { 306 return; 307 } 308 $fh = fopen($fn, 'w'); 309 if (!$fh) { 310 nice_die($fn.' is not writable. Check your permission settings!'); 311 } 312 // write php exit hack first 313 fwrite($fh, "# $fn\n"); 314 fwrite($fh, '# <?php exit()?>'."\n"); 315 fwrite($fh, "# Don't modify the lines above\n"); 316 fwrite($fh, "#\n"); 317 // copy existing lines 318 $lines = file($file); 319 foreach ($lines as $line){ 320 fwrite($fh, $line); 321 } 322 fclose($fh); 323 //try to rename the old file 324 io_rename($file,"$file.old"); 325} 326 327/** 328 * print a nice message even if no styles are loaded yet. 329 */ 330function nice_die($msg){ 331 echo<<<EOT 332 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" 333 "http://www.w3.org/TR/html4/loose.dtd"> 334 <html> 335 <head><title>DokuWiki Setup Error</title></head> 336 <body style="font-family: Arial, sans-serif"> 337 <div style="width:60%; margin: auto; background-color: #fcc; 338 border: 1px solid #faa; padding: 0.5em 1em;"> 339 <h1 style="font-size: 120%">DokuWiki Setup Error</h1> 340 <p>$msg</p> 341 </div> 342 </body> 343 </html> 344EOT; 345 exit; 346} 347 348 349//Setup VIM: ex: et ts=2 enc=utf-8 : 350