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