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 // check for error reporting override or set error reporting to sane values 20 if (!defined('DOKU_E_LEVEL') && file_exists(DOKU_CONF.'report_e_all')) { 21 define('DOKU_E_LEVEL', E_ALL); 22 } 23 if (!defined('DOKU_E_LEVEL')) { error_reporting(E_ALL ^ E_NOTICE); } 24 else { error_reporting(DOKU_E_LEVEL); } 25 26 // init memory caches 27 global $cache_revinfo; $cache_revinfo = array(); 28 global $cache_wikifn; $cache_wikifn = array(); 29 global $cache_wikifn; $cache_cleanid = array(); 30 31 //prepare config array() 32 global $conf; 33 if (!defined('DOKU_UNITTEST')) { 34 $conf = array(); 35 36 // load the config file(s) 37 require_once(DOKU_CONF.'dokuwiki.php'); 38 if(@file_exists(DOKU_CONF.'local.php')){ 39 require_once(DOKU_CONF.'local.php'); 40 } 41 } 42 43 //prepare language array 44 global $lang; 45 $lang = array(); 46 47 //load the language files 48 require_once(DOKU_INC.'inc/lang/en/lang.php'); 49 if ( $conf['lang'] && $conf['lang'] != 'en' ) { 50 require_once(DOKU_INC.'inc/lang/'.$conf['lang'].'/lang.php'); 51 } 52 53 // define baseURL 54 if(!defined('DOKU_BASE')) define('DOKU_BASE',getBaseURL()); 55 if(!defined('DOKU_URL')) define('DOKU_URL',getBaseURL(true)); 56 57 // define Plugin dir 58 if(!defined('DOKU_PLUGIN')) define('DOKU_PLUGIN',DOKU_INC.'lib/plugins/'); 59 60 // define main script 61 if(!defined('DOKU_SCRIPT')) define('DOKU_SCRIPT','doku.php'); 62 63 // define Template baseURL 64 if(!defined('DOKU_TPL')) define('DOKU_TPL', 65 DOKU_BASE.'lib/tpl/'.$conf['template'].'/'); 66 67 // define real Template directory 68 if(!defined('DOKU_TPLINC')) define('DOKU_TPLINC', 69 DOKU_INC.'lib/tpl/'.$conf['template'].'/'); 70 71 // make session rewrites XHTML compliant 72 @ini_set('arg_separator.output', '&'); 73 74 // enable gzip compression 75 if ($conf['gzip_output'] && 76 !defined('DOKU_DISABLE_GZIP_OUTPUT') && 77 function_exists('ob_gzhandler') && 78 preg_match('/gzip|deflate/', $_SERVER['HTTP_ACCEPT_ENCODING'])) { 79 ob_start('ob_gzhandler'); 80 } 81 82 // init session 83 if (!headers_sent() && !defined('NOSESSION')){ 84 session_name("DokuWiki"); 85 session_start(); 86 } 87 88 // kill magic quotes 89 if (get_magic_quotes_gpc() && !defined('MAGIC_QUOTES_STRIPPED')) { 90 if (!empty($_GET)) remove_magic_quotes($_GET); 91 if (!empty($_POST)) remove_magic_quotes($_POST); 92 if (!empty($_COOKIE)) remove_magic_quotes($_COOKIE); 93 if (!empty($_REQUEST)) remove_magic_quotes($_REQUEST); 94# if (!empty($_SESSION)) remove_magic_quotes($_SESSION); #FIXME needed ? 95 @ini_set('magic_quotes_gpc', 0); 96 define('MAGIC_QUOTES_STRIPPED',1); 97 } 98 @set_magic_quotes_runtime(0); 99 @ini_set('magic_quotes_sybase',0); 100 101 // disable gzip if not available 102 if($conf['compression'] == 'bz' && !function_exists('bzopen')){ 103 $conf['compression'] = 'gz'; 104 } 105 if($conf['compression'] == 'gz' && !function_exists('gzopen')){ 106 $conf['compression'] = 0; 107 } 108 109 // precalculate file creation modes 110 init_creationmodes(); 111 112 // make real paths and check them 113 init_paths(); 114 init_files(); 115 116 // automatic upgrade to script versions of certain files 117 scriptify(DOKU_CONF.'users.auth'); 118 scriptify(DOKU_CONF.'acl.auth'); 119 120 121/** 122 * Checks paths from config file 123 */ 124function init_paths(){ 125 global $conf; 126 127 $paths = array('datadir' => 'pages', 128 'olddir' => 'attic', 129 'mediadir' => 'media', 130 'metadir' => 'meta', 131 'cachedir' => 'cache', 132 'lockdir' => 'locks'); 133 134 foreach($paths as $c => $p){ 135 if(!$conf[$c]) $conf[$c] = $conf['savedir'].'/'.$p; 136 $conf[$c] = init_path($conf[$c]); 137 if(!$conf[$c]) nice_die("The $c does not exist, isn't accessable or writable. 138 You should check your config and permission settings. 139 Or maybe you want to <a href=\"install.php\">run the 140 installer</a>?"); 141 } 142 143 // path to old changelog only needed for upgrading 144 $conf['changelog_old'] = init_path((isset($conf['changelog']))?($conf['changelog']):($conf['savedir'].'/changes.log')); 145 if ($conf['changelog_old']=='') { unset($conf['changelog_old']); } 146 // hardcoded changelog because it is now a cache that lives in meta 147 $conf['changelog'] = $conf['metadir'].'/_dokuwiki.changes'; 148} 149 150/** 151 * Checks the existance of certain files and creates them if missing. 152 */ 153function init_files(){ 154 global $conf; 155 156 $files = array( $conf['cachedir'].'/word.idx', 157 $conf['cachedir'].'/page.idx', 158 $conf['cachedir'].'/index.idx'); 159 160 foreach($files as $file){ 161 if(!@file_exists($file)){ 162 $fh = @fopen($file,'a'); 163 if($fh){ 164 fclose($fh); 165 if($conf['fperm']) chmod($file, $conf['fperm']); 166 }else{ 167 nice_die("$file is not writable. Check your permissions settings!"); 168 } 169 } 170 } 171} 172 173/** 174 * Returns absolute path 175 * 176 * This tries the given path first, then checks in DOKU_INC. 177 * Check for accessability on directories as well. 178 * 179 * @author Andreas Gohr <andi@splitbrain.org> 180 */ 181function init_path($path){ 182 // check existance 183 $p = realpath($path); 184 if(!@file_exists($p)){ 185 $p = realpath(DOKU_INC.$path); 186 if(!@file_exists($p)){ 187 return ''; 188 } 189 } 190 191 // check writability 192 if(!@is_writable($p)){ 193 return ''; 194 } 195 196 // check accessability (execute bit) for directories 197 if(@is_dir($p) && !@file_exists("$p/.")){ 198 return ''; 199 } 200 201 return $p; 202} 203 204/** 205 * Sets the internal config values fperm and dperm which, when set, 206 * will be used to change the permission of a newly created dir or 207 * file with chmod. Considers the influence of the system's umask 208 * setting the values only if needed. 209 */ 210function init_creationmodes(){ 211 global $conf; 212 213 // Legacy support for old umask/dmask scheme 214 unset($conf['dmask']); 215 unset($conf['fmask']); 216 unset($conf['umask']); 217 unset($conf['fperm']); 218 unset($conf['dperm']); 219 220 // get system umask, fallback to 0 if none available 221 $umask = @umask(); 222 if(!$umask) $umask = 0000; 223 224 // check what is set automatically by the system on file creation 225 // and set the fperm param if it's not what we want 226 $auto_fmode = 0666 & ~$umask; 227 if($auto_fmode != $conf['fmode']) $conf['fperm'] = $conf['fmode']; 228 229 // check what is set automatically by the system on file creation 230 // and set the dperm param if it's not what we want 231 $auto_dmode = $conf['dmode'] & ~$umask; 232 if($auto_dmode != $conf['dmode']) $conf['dperm'] = $conf['dmode']; 233} 234 235/** 236 * remove magic quotes recursivly 237 * 238 * @author Andreas Gohr <andi@splitbrain.org> 239 */ 240function remove_magic_quotes(&$array) { 241 foreach (array_keys($array) as $key) { 242 if (is_array($array[$key])) { 243 remove_magic_quotes($array[$key]); 244 }else { 245 $array[$key] = stripslashes($array[$key]); 246 } 247 } 248} 249 250/** 251 * Returns the full absolute URL to the directory where 252 * DokuWiki is installed in (includes a trailing slash) 253 * 254 * @author Andreas Gohr <andi@splitbrain.org> 255 */ 256function getBaseURL($abs=false){ 257 global $conf; 258 //if canonical url enabled always return absolute 259 if($conf['canonical']) $abs = true; 260 261 if($conf['basedir']){ 262 $dir = $conf['basedir'].'/'; 263 }elseif(substr($_SERVER['SCRIPT_NAME'],-4) == '.php'){ 264 $dir = dirname($_SERVER['SCRIPT_NAME']).'/'; 265 }elseif(substr($_SERVER['PHP_SELF'],-4) == '.php'){ 266 $dir = dirname($_SERVER['PHP_SELF']).'/'; 267 }elseif($_SERVER['DOCUMENT_ROOT'] && $_SERVER['SCRIPT_FILENAME']){ 268 $dir = preg_replace ('/^'.preg_quote($_SERVER['DOCUMENT_ROOT'],'/').'/','', 269 $_SERVER['SCRIPT_FILENAME']); 270 $dir = dirname('/'.$dir).'/'; 271 }else{ 272 $dir = './'; //probably wrong 273 } 274 275 $dir = str_replace('\\','/',$dir); #bugfix for weird WIN behaviour 276 $dir = preg_replace('#//+#','/',$dir); 277 278 //handle script in lib/exe dir 279 $dir = preg_replace('!lib/exe/$!','',$dir); 280 281 //handle script in lib/plugins dir 282 $dir = preg_replace('!lib/plugins/.*$!','',$dir); 283 284 //finish here for relative URLs 285 if(!$abs) return $dir; 286 287 //use config option if available 288 if($conf['baseurl']) return $conf['baseurl'].$dir; 289 290 //split hostheader into host and port 291 list($host,$port) = explode(':',$_SERVER['HTTP_HOST']); 292 if(!$port) $port = $_SERVER['SERVER_PORT']; 293 if(!$port) $port = 80; 294 295 // see if HTTPS is enabled - apache leaves this empty when not available, 296 // IIS sets it to 'off', 'false' and 'disabled' are just guessing 297 if (preg_match('/^(|off|false|disabled)$/i',$_SERVER['HTTPS'])){ 298 $proto = 'http://'; 299 if ($port == '80') { 300 $port=''; 301 } 302 }else{ 303 $proto = 'https://'; 304 if ($port == '443') { 305 $port=''; 306 } 307 } 308 309 if($port) $port = ':'.$port; 310 311 return $proto.$host.$port.$dir; 312} 313 314/** 315 * Append a PHP extension to a given file and adds an exit call 316 * 317 * This is used to migrate some old configfiles. An added PHP extension 318 * ensures the contents are not shown to webusers even if .htaccess files 319 * do not work 320 * 321 * @author Jan Decaluwe <jan@jandecaluwe.com> 322 */ 323function scriptify($file) { 324 // checks 325 if (!is_readable($file)) { 326 return; 327 } 328 $fn = $file.'.php'; 329 if (@file_exists($fn)) { 330 return; 331 } 332 $fh = fopen($fn, 'w'); 333 if (!$fh) { 334 nice_die($fn.' is not writable. Check your permission settings!'); 335 } 336 // write php exit hack first 337 fwrite($fh, "# $fn\n"); 338 fwrite($fh, '# <?php exit()?>'."\n"); 339 fwrite($fh, "# Don't modify the lines above\n"); 340 fwrite($fh, "#\n"); 341 // copy existing lines 342 $lines = file($file); 343 foreach ($lines as $line){ 344 fwrite($fh, $line); 345 } 346 fclose($fh); 347 //try to rename the old file 348 io_rename($file,"$file.old"); 349} 350 351/** 352 * print a nice message even if no styles are loaded yet. 353 */ 354function nice_die($msg){ 355 echo<<<EOT 356 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" 357 "http://www.w3.org/TR/html4/loose.dtd"> 358 <html> 359 <head><title>DokuWiki Setup Error</title></head> 360 <body style="font-family: Arial, sans-serif"> 361 <div style="width:60%; margin: auto; background-color: #fcc; 362 border: 1px solid #faa; padding: 0.5em 1em;"> 363 <h1 style="font-size: 120%">DokuWiki Setup Error</h1> 364 <p>$msg</p> 365 </div> 366 </body> 367 </html> 368EOT; 369 exit; 370} 371 372 373//Setup VIM: ex: et ts=2 enc=utf-8 : 374