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Code source de DokuWiki 2006-11-06 |
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_cleanid; $cache_cleanid = array(); 30 global $cache_authname; $cache_authname = array(); 31 32 //prepare config array() 33 global $conf; 34 if (!defined('DOKU_UNITTEST')) { 35 $conf = array(); 36 37 // load the config file(s) 38 require_once(DOKU_CONF.'dokuwiki.php'); 39 if(@file_exists(DOKU_CONF.'local.php')){ 40 require_once(DOKU_CONF.'local.php'); 41 } 42 } 43 44 //prepare language array 45 global $lang; 46 $lang = array(); 47 48 //load the language files 49 require_once (DOKU_INC.'inc/lang/en/lang.php'); 50 if ( $conf['lang'] && $conf['lang'] != 'en' ) { 51 require_once(DOKU_INC.'inc/lang/'.$conf['lang'].'/lang.php'); 52 } 53 54 // define baseURL 55 if(!defined('DOKU_BASE')) define('DOKU_BASE',getBaseURL()); 56 if(!defined('DOKU_URL')) define('DOKU_URL',getBaseURL(true)); 57 58 // define cookie and session id 59 if (!defined('DOKU_COOKIE')) define('DOKU_COOKIE', 'DW'.md5(DOKU_URL)); 60 61 // define Plugin dir 62 if(!defined('DOKU_PLUGIN')) define('DOKU_PLUGIN',DOKU_INC.'lib/plugins/'); 63 64 // define main script 65 if(!defined('DOKU_SCRIPT')) define('DOKU_SCRIPT','doku.php'); 66 67 // define Template baseURL 68 if(!defined('DOKU_TPL')) define('DOKU_TPL', 69 DOKU_BASE.'lib/tpl/'.$conf['template'].'/'); 70 71 // define real Template directory 72 if(!defined('DOKU_TPLINC')) define('DOKU_TPLINC', 73 DOKU_INC.'lib/tpl/'.$conf['template'].'/'); 74 75 // make session rewrites XHTML compliant 76 @ini_set('arg_separator.output', '&'); 77 78 // enable gzip compression 79 if ($conf['gzip_output'] && 80 !defined('DOKU_DISABLE_GZIP_OUTPUT') && 81 function_exists('ob_gzhandler') && 82 preg_match('/gzip|deflate/', $_SERVER['HTTP_ACCEPT_ENCODING'])) { 83 ob_start('ob_gzhandler'); 84 } 85 86 // init session 87 if (!headers_sent() && !defined('NOSESSION')){ 88 session_name("DokuWiki"); 89 session_start(); 90 } 91 92 // kill magic quotes 93 if (get_magic_quotes_gpc() && !defined('MAGIC_QUOTES_STRIPPED')) { 94 if (!empty($_GET)) remove_magic_quotes($_GET); 95 if (!empty($_POST)) remove_magic_quotes($_POST); 96 if (!empty($_COOKIE)) remove_magic_quotes($_COOKIE); 97 if (!empty($_REQUEST)) remove_magic_quotes($_REQUEST); 98 # if (!empty($_SESSION)) remove_magic_quotes($_SESSION); #FIXME needed ? 99 @ini_set('magic_quotes_gpc', 0); 100 define('MAGIC_QUOTES_STRIPPED',1); 101 } 102 @set_magic_quotes_runtime(0); 103 @ini_set('magic_quotes_sybase',0); 104 105 // disable gzip if not available 106 if($conf['compression'] == 'bz' && !function_exists('bzopen')){ 107 $conf['compression'] = 'gz'; 108 } 109 if($conf['compression'] == 'gz' && !function_exists('gzopen')){ 110 $conf['compression'] = 0; 111 } 112 113 // precalculate file creation modes 114 init_creationmodes(); 115 116 // make real paths and check them 117 init_paths(); 118 init_files(); 119 120 // automatic upgrade to script versions of certain files 121 scriptify(DOKU_CONF.'users.auth'); 122 scriptify(DOKU_CONF.'acl.auth'); 123 124 125 /** 126 * Checks paths from config file 127 */ 128 function init_paths(){ 129 global $conf; 130 131 $paths = array('datadir' => 'pages', 132 'olddir' => 'attic', 133 'mediadir' => 'media', 134 'metadir' => 'meta', 135 'cachedir' => 'cache', 136 'lockdir' => 'locks'); 137 138 foreach($paths as $c => $p){ 139 if(empty($conf[$c])) $conf[$c] = $conf['savedir'].'/'.$p; 140 $conf[$c] = init_path($conf[$c]); 141 if(empty($conf[$c])) nice_die("The $c does not exist, isn't accessable or writable. 142 You should check your config and permission settings. 143 Or maybe you want to <a href=\"install.php\">run the 144 installer</a>?"); 145 } 146 147 // path to old changelog only needed for upgrading 148 $conf['changelog_old'] = init_path((isset($conf['changelog']))?($conf['changelog']):($conf['savedir'].'/changes.log')); 149 if ($conf['changelog_old']=='') { unset($conf['changelog_old']); } 150 // hardcoded changelog because it is now a cache that lives in meta 151 $conf['changelog'] = $conf['metadir'].'/_dokuwiki.changes'; 152 } 153 154 /** 155 * Checks the existance of certain files and creates them if missing. 156 */ 157 function init_files(){ 158 global $conf; 159 160 $files = array( $conf['cachedir'].'/word.idx', 161 $conf['cachedir'].'/page.idx', 162 $conf['cachedir'].'/index.idx'); 163 164 foreach($files as $file){ 165 if(!@file_exists($file)){ 166 $fh = @fopen($file,'a'); 167 if($fh){ 168 fclose($fh); 169 if($conf['fperm']) chmod($file, $conf['fperm']); 170 }else{ 171 nice_die("$file is not writable. Check your permissions settings!"); 172 } 173 } 174 } 175 } 176 177 /** 178 * Returns absolute path 179 * 180 * This tries the given path first, then checks in DOKU_INC. 181 * Check for accessability on directories as well. 182 * 183 * @author Andreas Gohr <andi@splitbrain.org> 184 */ 185 function init_path($path){ 186 // check existance 187 $p = realpath($path); 188 if(!@file_exists($p)){ 189 $p = realpath(DOKU_INC.$path); 190 if(!@file_exists($p)){ 191 return ''; 192 } 193 } 194 195 // check writability 196 if(!@is_writable($p)){ 197 return ''; 198 } 199 200 // check accessability (execute bit) for directories 201 if(@is_dir($p) && !@file_exists("$p/.")){ 202 return ''; 203 } 204 205 return $p; 206 } 207 208 /** 209 * Sets the internal config values fperm and dperm which, when set, 210 * will be used to change the permission of a newly created dir or 211 * file with chmod. Considers the influence of the system's umask 212 * setting the values only if needed. 213 */ 214 function init_creationmodes(){ 215 global $conf; 216 217 // Legacy support for old umask/dmask scheme 218 unset($conf['dmask']); 219 unset($conf['fmask']); 220 unset($conf['umask']); 221 unset($conf['fperm']); 222 unset($conf['dperm']); 223 224 // get system umask, fallback to 0 if none available 225 $umask = @umask(); 226 if(!$umask) $umask = 0000; 227 228 // check what is set automatically by the system on file creation 229 // and set the fperm param if it's not what we want 230 $auto_fmode = 0666 & ~$umask; 231 if($auto_fmode != $conf['fmode']) $conf['fperm'] = $conf['fmode']; 232 233 // check what is set automatically by the system on file creation 234 // and set the dperm param if it's not what we want 235 $auto_dmode = $conf['dmode'] & ~$umask; 236 if($auto_dmode != $conf['dmode']) $conf['dperm'] = $conf['dmode']; 237 } 238 239 /** 240 * remove magic quotes recursivly 241 * 242 * @author Andreas Gohr <andi@splitbrain.org> 243 */ 244 function remove_magic_quotes(&$array) { 245 foreach (array_keys($array) as $key) { 246 if (is_array($array[$key])) { 247 remove_magic_quotes($array[$key]); 248 }else { 249 $array[$key] = stripslashes($array[$key]); 250 } 251 } 252 } 253 254 /** 255 * Returns the full absolute URL to the directory where 256 * DokuWiki is installed in (includes a trailing slash) 257 * 258 * @author Andreas Gohr <andi@splitbrain.org> 259 */ 260 function getBaseURL($abs=false){ 261 global $conf; 262 //if canonical url enabled always return absolute 263 if($conf['canonical']) $abs = true; 264 265 if($conf['basedir']){ 266 $dir = $conf['basedir'].'/'; 267 }elseif(substr($_SERVER['SCRIPT_NAME'],-4) == '.php'){ 268 $dir = dirname($_SERVER['SCRIPT_NAME']).'/'; 269 }elseif(substr($_SERVER['PHP_SELF'],-4) == '.php'){ 270 $dir = dirname($_SERVER['PHP_SELF']).'/'; 271 }elseif($_SERVER['DOCUMENT_ROOT'] && $_SERVER['SCRIPT_FILENAME']){ 272 $dir = preg_replace ('/^'.preg_quote($_SERVER['DOCUMENT_ROOT'],'/').'/','', 273 $_SERVER['SCRIPT_FILENAME']); 274 $dir = dirname('/'.$dir).'/'; 275 }else{ 276 $dir = './'; //probably wrong 277 } 278 279 $dir = str_replace('\\','/',$dir); #bugfix for weird WIN behaviour 280 $dir = preg_replace('#//+#','/',$dir); 281 282 //handle script in lib/exe dir 283 $dir = preg_replace('!lib/exe/$!','',$dir); 284 285 //handle script in lib/plugins dir 286 $dir = preg_replace('!lib/plugins/.*$!','',$dir); 287 288 //finish here for relative URLs 289 if(!$abs) return $dir; 290 291 //use config option if available 292 if($conf['baseurl']) return $conf['baseurl'].$dir; 293 294 //split hostheader into host and port 295 list($host,$port) = explode(':',$_SERVER['HTTP_HOST']); 296 if(!$port) $port = $_SERVER['SERVER_PORT']; 297 if(!$port) $port = 80; 298 299 // see if HTTPS is enabled - apache leaves this empty when not available, 300 // IIS sets it to 'off', 'false' and 'disabled' are just guessing 301 if (preg_match('/^(|off|false|disabled)$/i',$_SERVER['HTTPS'])){ 302 $proto = 'http://'; 303 if ($port == '80') { 304 $port=''; 305 } 306 }else{ 307 $proto = 'https://'; 308 if ($port == '443') { 309 $port=''; 310 } 311 } 312 313 if($port) $port = ':'.$port; 314 315 return $proto.$host.$port.$dir; 316 } 317 318 /** 319 * Append a PHP extension to a given file and adds an exit call 320 * 321 * This is used to migrate some old configfiles. An added PHP extension 322 * ensures the contents are not shown to webusers even if .htaccess files 323 * do not work 324 * 325 * @author Jan Decaluwe <jan@jandecaluwe.com> 326 */ 327 function scriptify($file) { 328 // checks 329 if (!is_readable($file)) { 330 return; 331 } 332 $fn = $file.'.php'; 333 if (@file_exists($fn)) { 334 return; 335 } 336 $fh = fopen($fn, 'w'); 337 if (!$fh) { 338 nice_die($fn.' is not writable. Check your permission settings!'); 339 } 340 // write php exit hack first 341 fwrite($fh, "# $fn\n"); 342 fwrite($fh, '# <?php exit()?>'."\n"); 343 fwrite($fh, "# Don't modify the lines above\n"); 344 fwrite($fh, "#\n"); 345 // copy existing lines 346 $lines = file($file); 347 foreach ($lines as $line){ 348 fwrite($fh, $line); 349 } 350 fclose($fh); 351 //try to rename the old file 352 io_rename($file,"$file.old"); 353 } 354 355 /** 356 * print a nice message even if no styles are loaded yet. 357 */ 358 function nice_die($msg){ 359 echo<<<EOT 360 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" 361 "http://www.w3.org/TR/html4/loose.dtd"> 362 <html> 363 <head><title>DokuWiki Setup Error</title></head> 364 <body style="font-family: Arial, sans-serif"> 365 <div style="width:60%; margin: auto; background-color: #fcc; 366 border: 1px solid #faa; padding: 0.5em 1em;"> 367 <h1 style="font-size: 120%">DokuWiki Setup Error</h1> 368 <p>$msg</p> 369 </div> 370 </body> 371 </html> 372 EOT; 373 exit; 374 } 375 376 377 //Setup VIM: ex: et ts=2 enc=utf-8 :
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| Généré le : Tue Apr 3 20:47:31 2007 | par Balluche grâce à PHPXref 0.7 |