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pmwiki.php
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pmwiki.php
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<?php
/*
PmWiki
Copyright 2001-2011 Patrick R. Michaud
pmichaud@pobox.com
http://www.pmichaud.com/
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
----
Note from Pm: Trying to understand the PmWiki code? Wish it had
more comments? If you want help with any of the code here,
write me at <pmichaud@pobox.com> with your question(s) and I'll
provide explanations (and add comments) that answer them.
*/
error_reporting(E_ALL ^ E_NOTICE);
StopWatch('PmWiki');
@ini_set('magic_quotes_runtime', 0);
@ini_set('magic_quotes_sybase', 0);
if (@ini_get('pcre.backtrack_limit') < 1000000)
@ini_set('pcre.backtrack_limit', 1000000);
if (ini_get('register_globals'))
foreach($_REQUEST as $k=>$v) {
if (preg_match('/^(GLOBALS|_SERVER|_GET|_POST|_COOKIE|_FILES|_ENV|_REQUEST|_SESSION|FarmD|WikiDir)$/i', $k)) exit();
${$k}=''; unset(${$k});
}
$UnsafeGlobals = array_keys($GLOBALS); $GCount=0; $FmtV=array();
SDV($FarmD,dirname(__FILE__));
SDV($WorkDir,'wiki.d');
define('PmWiki',1);
if (preg_match('/\\w\\w:/', $FarmD)) exit();
@include_once("$FarmD/scripts/version.php");
$GroupPattern = '[[:upper:]][\\w]*(?:-\\w+)*';
$NamePattern = '[[:upper:]\\d][\\w]*(?:-\\w+)*';
$BlockPattern = 'form|div|table|t[rdh]|p|[uo]l|d[ltd]|h[1-6r]|pre|blockquote';
$WikiWordPattern = '[[:upper:]][[:alnum:]]*(?:[[:upper:]][[:lower:]0-9]|[[:lower:]0-9][[:upper:]])[[:alnum:]]*';
$WikiDir = new PageStore('wiki.d/{$FullName}');
$WikiLibDirs = array(&$WikiDir,new PageStore('$FarmD/wikilib.d/{$FullName}'));
$LocalDir = 'local';
$InterMapFiles = array("$FarmD/scripts/intermap.txt",
"$FarmD/local/farmmap.txt", '$SiteGroup.InterMap', 'local/localmap.txt');
$Newline = "\263"; # deprecated, 2.0.0
$KeepToken = "\235\235";
$Now=time();
define('READPAGE_CURRENT', $Now+604800);
$TimeFmt = '%B %d, %Y, at %I:%M %p';
$TimeISOFmt = '%Y-%m-%dT%H:%M:%S';
$TimeISOZFmt = '%Y-%m-%dT%H:%M:%SZ';
$MessagesFmt = array();
$BlockMessageFmt = "<h3 class='wikimessage'>$[This post has been blocked by the administrator]</h3>";
$EditFields = array('text');
$EditFunctions = array('EditTemplate', 'RestorePage', 'ReplaceOnSave',
'SaveAttributes', 'PostPage', 'PostRecentChanges', 'AutoCreateTargets',
'PreviewPage');
$EnablePost = 1;
$ChangeSummary = substr(preg_replace('/[\\x00-\\x1f]|=\\]/', '',
stripmagic(@$_REQUEST['csum'])), 0, 100);
$AsSpacedFunction = 'AsSpaced';
$SpaceWikiWords = 0;
$RCDelimPattern = ' ';
$RecentChangesFmt = array(
'$SiteGroup.AllRecentChanges' =>
'* [[{$Group}.{$Name}]] . . . $CurrentTime $[by] $AuthorLink: [=$ChangeSummary=]',
'$Group.RecentChanges' =>
'* [[{$Group}/{$Name}]] . . . $CurrentTime $[by] $AuthorLink: [=$ChangeSummary=]');
$UrlScheme = (@$_SERVER['HTTPS']=='on' || @$_SERVER['SERVER_PORT']==443)
? 'https' : 'http';
$ScriptUrl = $UrlScheme.'://'.$_SERVER['HTTP_HOST'].$_SERVER['SCRIPT_NAME'];
$PubDirUrl = preg_replace('#/[^/]*$#', '/pub', $ScriptUrl, 1);
$HTMLVSpace = "<vspace>";
$HTMLPNewline = '';
$MarkupFrame = array();
$MarkupFrameBase = array('cs' => array(), 'vs' => '', 'ref' => 0,
'closeall' => array(), 'is' => array(),
'escape' => 1);
$WikiWordCountMax = 1000000;
$WikiWordCount['PmWiki'] = 1;
$TableRowIndexMax = 1;
$UrlExcludeChars = '<>"{}|\\\\^`()[\\]\'';
$QueryFragPattern = "[?#][^\\s$UrlExcludeChars]*";
$SuffixPattern = '(?:-?[[:alnum:]]+)*';
$LinkPageSelfFmt = "<a class='selflink' href='\$LinkUrl' title='\$LinkAlt'>\$LinkText</a>";
$LinkPageExistsFmt = "<a class='wikilink' href='\$LinkUrl' title='\$LinkAlt'>\$LinkText</a>";
$LinkPageCreateFmt =
"<a class='createlinktext' rel='nofollow' title='\$LinkAlt'
href='{\$PageUrl}?action=edit'>\$LinkText</a><a rel='nofollow'
class='createlink' href='{\$PageUrl}?action=edit'>?</a>";
$UrlLinkFmt =
"<a class='urllink' href='\$LinkUrl' title='\$LinkAlt' rel='nofollow'>\$LinkText</a>";
umask(002);
$CookiePrefix = '';
$SiteGroup = 'Site';
$SiteAdminGroup = 'SiteAdmin';
$DefaultGroup = 'Main';
$DefaultName = 'HomePage';
$GroupHeaderFmt = '(:include {$Group}.GroupHeader self=0 basepage={*$FullName}:)(:nl:)';
$GroupFooterFmt = '(:nl:)(:include {$Group}.GroupFooter self=0 basepage={*$FullName}:)';
$PagePathFmt = array('{$Group}.$1','$1.$1','$1.{$DefaultName}');
$PageAttributes = array(
'passwdread' => '$[Set new read password:]',
'passwdedit' => '$[Set new edit password:]',
'passwdattr' => '$[Set new attribute password:]');
$XLLangs = array('en');
if (preg_match('/^C$|\.UTF-?8/i',setlocale(LC_ALL,0)))
setlocale(LC_ALL,'en_US');
$FmtP = array();
$FmtPV = array(
# '$ScriptUrl' => 'PUE($ScriptUrl)', ## $ScriptUrl is special
'$PageUrl' =>
'PUE(($EnablePathInfo)
? "$ScriptUrl/$group/$name"
: "$ScriptUrl?n=$group.$name")',
'$FullName' => '"$group.$name"',
'$Groupspaced' => '$AsSpacedFunction($group)',
'$Namespaced' => '$AsSpacedFunction($name)',
'$Group' => '$group',
'$Name' => '$name',
'$Titlespaced' => 'FmtPageTitle(@$page["title"], $name, 1)',
'$Title' => 'FmtPageTitle(@$page["title"], $name, 0)',
'$LastModifiedBy' => '@$page["author"]',
'$LastModifiedHost' => '@$page["host"]',
'$LastModified' => 'strftime($GLOBALS["TimeFmt"], $page["time"])',
'$LastModifiedSummary' => '@$page["csum"]',
'$LastModifiedTime' => '$page["time"]',
'$Description' => '@$page["description"]',
'$SiteGroup' => '$GLOBALS["SiteGroup"]',
'$VersionNum' => '$GLOBALS["VersionNum"]',
'$Version' => '$GLOBALS["Version"]',
'$Author' => 'NoCache($GLOBALS["Author"])',
'$AuthId' => 'NoCache($GLOBALS["AuthId"])',
'$DefaultGroup' => '$GLOBALS["DefaultGroup"]',
'$DefaultName' => '$GLOBALS["DefaultName"]',
'$BaseName' => 'MakeBaseName($pn)',
'$Action' => '$GLOBALS["action"]',
'$PasswdRead' => 'PasswdVar($pn, "read")',
'$PasswdEdit' => 'PasswdVar($pn, "edit")',
'$PasswdAttr' => 'PasswdVar($pn, "attr")',
);
$SaveProperties = array('title', 'description', 'keywords');
$PageTextVarPatterns = array(
'var:' => '/^(:*\\s*(\\w[-\\w]*)\\s*:[ \\t]?)(.*)($)/m',
'(:var:...:)' => '/(\\(: *(\\w[-\\w]*) *:(?!\\))\\s?)(.*?)(:\\))/s'
);
$WikiTitle = 'PmWiki';
$Charset = 'ISO-8859-1';
$HTTPHeaders = array(
"Expires: Tue, 01 Jan 2002 00:00:00 GMT",
"Cache-Control: no-store, no-cache, must-revalidate",
"Content-type: text/html; charset=ISO-8859-1;");
$CacheActions = array('browse','diff','print');
$EnableHTMLCache = 0;
$NoHTMLCache = 0;
$HTMLDoctypeFmt =
"<!DOCTYPE html
PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\"
\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">
<html xmlns='http://www.w3.org/1999/xhtml' xml:lang='en' lang='en'><head>\n";
$HTMLStylesFmt['pmwiki'] = "
ul, ol, pre, dl, p { margin-top:0px; margin-bottom:0px; }
code.escaped { white-space: nowrap; }
.vspace { margin-top:1.33em; }
.indent { margin-left:40px; }
.outdent { margin-left:40px; text-indent:-40px; }
a.createlinktext { text-decoration:none; border-bottom:1px dotted gray; }
a.createlink { text-decoration:none; position:relative; top:-0.5em;
font-weight:bold; font-size:smaller; border-bottom:none; }
img { border:0px; }
";
$HTMLHeaderFmt['styles'] = array(
"<style type='text/css'><!--",&$HTMLStylesFmt,"\n--></style>");
$HTMLBodyFmt = "</head>\n<body>";
$HTMLStartFmt = array('headers:',&$HTMLDoctypeFmt,&$HTMLHeaderFmt,
&$HTMLBodyFmt);
$HTMLEndFmt = "\n</body>\n</html>";
$PageStartFmt = array(&$HTMLStartFmt,"\n<div id='contents'>\n");
$PageEndFmt = array('</div>',&$HTMLEndFmt);
$HandleActions = array(
'browse' => 'HandleBrowse', 'print' => 'HandleBrowse',
'edit' => 'HandleEdit', 'source' => 'HandleSource',
'attr' => 'HandleAttr', 'postattr' => 'HandlePostAttr',
'logout' => 'HandleLogoutA', 'login' => 'HandleLoginA');
$HandleAuth = array(
'browse' => 'read', 'source' => 'read', 'print' => 'read',
'edit' => 'edit', 'attr' => 'attr', 'postattr' => 'attr',
'logout' => 'read', 'login' => 'login');
$ActionTitleFmt = array(
'edit' => '| $[Edit]',
'attr' => '| $[Attributes]',
'login' => '| $[Login]');
$DefaultPasswords = array('admin'=>'*','read'=>'','edit'=>'','attr'=>'');
$AuthCascade = array('edit'=>'read', 'attr'=>'edit');
$AuthList = array('' => 1, 'nopass:' => 1, '@nopass' => 1);
$SessionEncode = 'base64_encode';
$SessionDecode = 'base64_decode';
$Conditions['enabled'] = '(boolean)@$GLOBALS[$condparm]';
$Conditions['false'] = 'false';
$Conditions['true'] = 'true';
$Conditions['group'] =
"(boolean)MatchPageNames(\$pagename, FixGlob(\$condparm, '$1$2.*'))";
$Conditions['name'] =
"(boolean)MatchPageNames(\$pagename, FixGlob(\$condparm, '$1*.$2'))";
$Conditions['match'] = 'preg_match("!$condparm!",$pagename)';
$Conditions['authid'] = 'NoCache(@$GLOBALS["AuthId"] > "")';
$Conditions['exists'] = "(boolean)ListPages(FixGlob(
str_replace(array('[[',']]'), array('', ''), \$condparm) , '$1*.$2'))";
$Conditions['equal'] = 'CompareArgs($condparm) == 0';
function CompareArgs($arg)
{ $arg = ParseArgs($arg); return strcmp(@$arg[''][0], @$arg[''][1]); }
$Conditions['auth'] = 'NoCache(CondAuth($pagename, $condparm))';
function CondAuth($pagename, $condparm) {
global $HandleAuth;
@list($level, $pn) = explode(' ', $condparm, 2);
$pn = ($pn > '') ? MakePageName($pagename, $pn) : $pagename;
if (@$HandleAuth[$level]>'') $level = $HandleAuth[$level];
return (boolean)RetrieveAuthPage($pn, $level, false, READPAGE_CURRENT);
}
## CondExpr handles complex conditions (expressions)
## Portions Copyright 2005 by D. Faure (dfaure@cpan.org)
function CondExpr($pagename, $condname, $condparm) {
global $CondExprOps;
SDV($CondExprOps, 'and|x?or|&&|\\|\\||[!()]');
if ($condname == '(' || $condname == '[')
$condparm = preg_replace('/[\\]\\)]\\s*$/', '', $condparm);
$condparm = str_replace('&&', '&&', $condparm);
$terms = preg_split("/(?<!\\S)($CondExprOps)(?!\\S)/i", $condparm, -1,
PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY);
foreach($terms as $i => $t) {
$t = trim($t);
if (preg_match("/^($CondExprOps)$/i", $t)) continue;
if ($t) $terms[$i] = CondText($pagename, "if $t", 'TRUE') ? '1' : '0';
}
return @eval('return(' . implode(' ', $terms) . ');');
}
$Conditions['expr'] = 'CondExpr($pagename, $condname, $condparm)';
$Conditions['('] = 'CondExpr($pagename, $condname, $condparm)';
$Conditions['['] = 'CondExpr($pagename, $condname, $condparm)';
$MarkupTable['_begin']['seq'] = 'B';
$MarkupTable['_end']['seq'] = 'E';
Markup('fulltext','>_begin');
Markup('split','>fulltext',"\n",
'$RedoMarkupLine=1; return explode("\n",$x);');
Markup('directives','>split');
Markup('inline','>directives');
Markup('links','>inline');
Markup('block','>links');
Markup('style','>block');
Markup('closeall', '_begin',
'/^\\(:closeall:\\)$/e',
"'<:block>' . MarkupClose()");
$ImgExtPattern="\\.(?:gif|jpg|jpeg|png|GIF|JPG|JPEG|PNG)";
$ImgTagFmt="<img src='\$LinkUrl' alt='\$LinkAlt' title='\$LinkAlt' />";
$BlockMarkups = array(
'block' => array('','','',0),
'ul' => array('<ul><li>','</li><li>','</li></ul>',1),
'dl' => array('<dl>','</dd>','</dd></dl>',1),
'ol' => array('<ol><li>','</li><li>','</li></ol>',1),
'p' => array('<p>','','</p>',0),
'indent' =>
array("<div class='indent'>","</div><div class='indent'>",'</div>',1),
'outdent' =>
array("<div class='outdent'>","</div><div class='outdent'>",'</div>',1),
'pre' => array('<pre>','','</pre>',0),
'table' => array("<table width='100%'>",'','</table>',0));
foreach(array('http:','https:','mailto:','ftp:','news:','gopher:','nap:',
'file:') as $m)
{ $LinkFunctions[$m] = 'LinkIMap'; $IMap[$m]="$m$1"; }
$LinkFunctions['<:page>'] = 'LinkPage';
$q = preg_replace('/(\\?|%3f)([-\\w]+=)/', '&$2', @$_SERVER['QUERY_STRING']);
if ($q != @$_SERVER['QUERY_STRING']) {
unset($_GET);
parse_str($q, $_GET);
$_REQUEST = array_merge($_REQUEST, $_GET, $_POST);
}
if (isset($_GET['action'])) $action = $_GET['action'];
elseif (isset($_POST['action'])) $action = $_POST['action'];
else $action = 'browse';
$pagename = @$_REQUEST['n'];
if (!$pagename) $pagename = @$_REQUEST['pagename'];
if (!$pagename &&
preg_match('!^'.preg_quote($_SERVER['SCRIPT_NAME'],'!').'/?([^?]*)!',
$_SERVER['REQUEST_URI'],$match))
$pagename = urldecode($match[1]);
if (preg_match('/[\\x80-\\xbf]/',$pagename))
$pagename=utf8_decode($pagename);
$pagename = preg_replace('![^[:alnum:]\\x80-\\xff]+$!','',$pagename);
$FmtPV['$RequestedPage'] = "'".htmlspecialchars($pagename, ENT_QUOTES)."'";
$Cursor['*'] = &$pagename;
if (function_exists("date_default_timezone_get") ) { # fix PHP5.3 warnings
@date_default_timezone_set(@date_default_timezone_get());
}
if (file_exists("$FarmD/local/farmconfig.php"))
include_once("$FarmD/local/farmconfig.php");
if (IsEnabled($EnableLocalConfig,1)) {
if (file_exists("$LocalDir/config.php"))
include_once("$LocalDir/config.php");
elseif (file_exists('config.php'))
include_once('config.php');
}
SDV($CurrentTime, strftime($TimeFmt, $Now));
SDV($CurrentTimeISO, strftime($TimeISOFmt, $Now));
if (IsEnabled($EnableStdConfig,1))
include_once("$FarmD/scripts/stdconfig.php");
if (is_array($PostConfig)) {
asort($PostConfig, SORT_NUMERIC);
foreach ($PostConfig as $k=>$v) {
if (!$k || !$v || $v<0) continue;
if (function_exists($k)) $k($pagename);
elseif (file_exists($k)) include_once($k);
}
}
foreach((array)$InterMapFiles as $f) {
$f = FmtPageName($f, $pagename);
if (($v = @file($f)))
$v = preg_replace('/^\\s*(?>\\w[-\\w]*)(?!:)/m', '$0:', implode('', $v));
else if (PageExists($f)) {
$p = ReadPage($f, READPAGE_CURRENT);
$v = $p['text'];
} else continue;
if (!preg_match_all("/^\\s*(\\w[-\\w]*:)[^\\S\n]+(\\S*)/m", $v,
$match, PREG_SET_ORDER)) continue;
foreach($match as $m) {
if (strpos($m[2], '$1') === false) $m[2] .= '$1';
$LinkFunctions[$m[1]] = 'LinkIMap';
$IMap[$m[1]] = FmtPageName($m[2], $pagename);
}
}
$keys = array_keys($AuthCascade);
while ($keys) {
$k = array_shift($keys); $t = $AuthCascade[$k];
if (in_array($t, $keys))
{ unset($AuthCascade[$k]); $AuthCascade[$k] = $t; array_push($keys, $k); }
}
$LinkPattern = implode('|',array_keys($LinkFunctions)); # after InterMaps
SDV($LinkPageCreateSpaceFmt,$LinkPageCreateFmt);
$ActionTitle = FmtPageName(@$ActionTitleFmt[$action], $pagename);
if (!@$HandleActions[$action] || !function_exists($HandleActions[$action]))
$action='browse';
if (IsEnabled($EnableActions, 1)) HandleDispatch($pagename, $action);
Lock(0);
return;
## HandleDispatch() is used to dispatch control to the appropriate
## action handler with the appropriate permissions.
## If a message is supplied, it is added to $MessagesFmt.
function HandleDispatch($pagename, $action, $msg=NULL) {
global $MessagesFmt, $HandleActions, $HandleAuth;
if ($msg) $MessagesFmt[] = "<div class='wikimessage'>$msg</div>";
$fn = $HandleActions[$action];
$auth = $HandleAuth[$action];
if (!$auth) $auth = 'read';
return $fn($pagename, $auth);
}
## helper functions
function stripmagic($x)
{ return get_magic_quotes_gpc() ? stripslashes($x) : $x; }
function pre_r(&$x)
{ return '<pre>'.htmlspecialchars(print_r($x, true)).'</pre>'; }
function PSS($x)
{ return str_replace('\\"','"',$x); }
function PVS($x)
{ return preg_replace("/\n[^\\S\n]*(?=\n)/", "\n<:vspace>", $x); }
function PVSE($x) { return PVS(htmlspecialchars($x, ENT_NOQUOTES)); }
function PZZ($x,$y='') { return ''; }
function PRR($x=NULL)
{ if ($x || is_null($x)) $GLOBALS['RedoMarkupLine']++; return $x; }
function PUE($x)
{ return preg_replace('/[\\x80-\\xff \'"<>]/e', "'%'.dechex(ord('$0'))", $x); }
function PQA($x) {
$out = '';
if (preg_match_all('/([a-zA-Z]+)\\s*=\\s*("[^"]*"|\'[^\']*\'|\\S*)/',
$x, $attr, PREG_SET_ORDER)) {
foreach($attr as $a) {
if (preg_match('/^on/i', $a[1])) continue;
$out .= $a[1] . '='
. preg_replace( '/^([\'"]?)(.*)\\1$/e',
"\"'\".str_replace(\"'\", ''', PSS('$2')).\"'\"", $a[2])
. ' ';
}
}
return $out;
}
function SDV(&$v,$x) { if (!isset($v)) $v=$x; }
function SDVA(&$var,$val)
{ foreach($val as $k=>$v) if (!isset($var[$k])) $var[$k]=$v; }
function IsEnabled(&$var,$f=0)
{ return (isset($var)) ? $var : $f; }
function SetTmplDisplay($var, $val)
{ NoCache(); $GLOBALS['TmplDisplay'][$var] = $val; }
function NoCache($x = '') { $GLOBALS['NoHTMLCache'] |= 1; return $x; }
function ParseArgs($x, $optpat = '(?>(\\w+)[:=])') {
$z = array();
preg_match_all("/($optpat|[-+])?(\"[^\"]*\"|'[^']*'|\\S+)/",
$x, $terms, PREG_SET_ORDER);
foreach($terms as $t) {
$v = preg_replace('/^([\'"])?(.*)\\1$/', '$2', $t[3]);
if ($t[2]) { $z['#'][] = $t[2]; $z[$t[2]] = $v; }
else { $z['#'][] = $t[1]; $z[$t[1]][] = $v; }
$z['#'][] = $v;
}
return $z;
}
function StopWatch($x) {
global $StopWatch, $EnableStopWatch;
if (!$EnableStopWatch) return;
static $wstart = 0, $ustart = 0;
list($usec,$sec) = explode(' ',microtime());
$wtime = ($sec+$usec);
if (!$wstart) $wstart = $wtime;
if ($EnableStopWatch != 2)
{ $StopWatch[] = sprintf("%05.2f %s", $wtime-$wstart, $x); return; }
$dat = getrusage();
$utime = ($dat['ru_utime.tv_sec']+$dat['ru_utime.tv_usec']/1000000);
if (!$ustart) $ustart=$utime;
$StopWatch[] =
sprintf("%05.2f %05.2f %s", $wtime-$wstart, $utime-$ustart, $x);
}
## DRange converts a variety of string formats into date (ranges).
## It returns the start and end timestamps (+1 second) of the specified date.
function DRange($when) {
global $Now;
## unix/posix @timestamp dates
if (preg_match('/^\\s*@(\\d+)\\s*(.*)$/', $when, $m)) {
$t0 = $m[2] ? strtotime($m[2], $m[1]) : $m[1];
return array($t0, $t0+1);
}
## ISO-8601 dates
$dpat = '/
(?<!\\d) # non-digit
(19\\d\\d|20[0-3]\\d) # year ($1)
([-.\\/]?) # date separator ($2)
(0\\d|1[0-2]) # month ($3)
(?: \\2 # repeat date separator
([0-2]\\d|3[0-1]) # day ($4)
(?: T # time marker
([01]\\d|2[0-4]) # hour ($5)
([.:]?) # time separator ($6)
([0-5]\\d) # minute ($7)
(?: \\6 # repeat time separator
([0-5]\\d|60) # seconds ($8)
)? # optional :ss
)? # optional Thh:mm:ss
)? # optional -ddThh:mm:ss
(?!\d) # non-digit
/x';
if (preg_match($dpat, $when, $m)) {
$n = $m;
## if no time given, assume range of 1 day (except when full month)
if (@$m[4]>'' && @$m[5] == '') { @$n[4]++; }
## if no day given, assume 1st of month and full month range
if (@$m[4] == '') { $m[4] = 1; $n[4] = 1; $n[3]++; }
## if no seconds given, assume range of 1 minute (except when full day)
if (@$m[7]>'' && @$m[8] == '') { @$n[7]++; }
$t0 = @mktime($m[5], $m[7], $m[8], $m[3], $m[4], $m[1]);
$t1 = @mktime($n[5], $n[7], $n[8], $n[3], $n[4], $n[1]);
return array($t0, $t1);
}
## now, today, tomorrow, yesterday
NoCache();
if ($when == 'now') return array($Now, $Now+1);
$m = localtime(time());
if ($when == 'tomorrow') { $m[3]++; $when = 'today'; }
if ($when == 'yesterday') { $m[3]--; $when = 'today'; }
if ($when == 'today')
return array(mktime(0, 0, 0, $m[4]+1, $m[3] , $m[5]+1900),
mktime(0, 0, 0, $m[4]+1, $m[3]+1, $m[5]+1900));
if (preg_match('/^\\s*$/', $when)) return array(-1, -1);
$t0 = strtotime($when);
$t1 = strtotime("+1 day", $t0);
return array($t0, $t1);
}
## AsSpaced converts a string with WikiWords into a spaced version
## of that string. (It can be overridden via $AsSpacedFunction.)
function AsSpaced($text) {
$text = preg_replace("/([[:lower:]\\d])([[:upper:]])/", '$1 $2', $text);
$text = preg_replace('/([^-\\d])(\\d[-\\d]*( |$))/','$1 $2',$text);
return preg_replace("/([[:upper:]])([[:upper:]][[:lower:]\\d])/",
'$1 $2', $text);
}
## Lock is used to make sure only one instance of PmWiki is running when
## files are being written. It does not "lock pages" for editing.
function Lock($op) {
global $WorkDir, $LockFile, $EnableReadOnly;
if ($op > 0 && IsEnabled($EnableReadOnly, 0))
Abort('Cannot modify site -- $EnableReadOnly is set', 'readonly');
SDV($LockFile, "$WorkDir/.flock");
mkdirp(dirname($LockFile));
static $lockfp,$curop;
if (!$lockfp) $lockfp = @fopen($LockFile, "w");
if (!$lockfp) {
if ($op <= 0) return;
@unlink($LockFile);
$lockfp = fopen($LockFile,"w") or
Abort('Cannot acquire lockfile', 'flock');
fixperms($LockFile);
}
if ($op<0) { flock($lockfp,LOCK_UN); fclose($lockfp); $lockfp=0; $curop=0; }
elseif ($op==0) { flock($lockfp,LOCK_UN); $curop=0; }
elseif ($op==1 && $curop<1)
{ session_write_close(); flock($lockfp,LOCK_SH); $curop=1; }
elseif ($op==2 && $curop<2)
{ session_write_close(); flock($lockfp,LOCK_EX); $curop=2; }
}
## mkdirp creates a directory and its parents as needed, and sets
## permissions accordingly.
function mkdirp($dir) {
global $ScriptUrl;
if (file_exists($dir)) return;
if (!file_exists(dirname($dir))) mkdirp(dirname($dir));
if (mkdir($dir, 0777)) {
fixperms($dir);
if (@touch("$dir/xxx")) { unlink("$dir/xxx"); return; }
rmdir($dir);
}
$parent = realpath(dirname($dir));
$bdir = basename($dir);
$perms = decoct(fileperms($parent) & 03777);
$msg = "PmWiki needs to have a writable <tt>$dir/</tt> directory
before it can continue. You can create the directory manually
by executing the following commands on your server:
<pre> mkdir $parent/$bdir\n chmod 777 $parent/$bdir</pre>
Then, <a href='{$ScriptUrl}'>reload this page</a>.";
$safemode = ini_get('safe_mode');
if (!$safemode) $msg .= "<br /><br />Or, for a slightly more
secure installation, try executing <pre> chmod 2777 $parent</pre>
on your server and following <a target='_blank' href='$ScriptUrl'>
this link</a>. Afterwards you can restore the permissions to
their current setting by executing <pre> chmod $perms $parent</pre>.";
Abort($msg);
}
## fixperms attempts to correct permissions on a file or directory
## so that both PmWiki and the account (current dir) owner can manipulate it
function fixperms($fname, $add = 0) {
clearstatcache();
if (!file_exists($fname)) Abort('?no such file');
$bp = 0;
if (fileowner($fname)!=@fileowner('.')) $bp = (is_dir($fname)) ? 007 : 006;
if (filegroup($fname)==@filegroup('.')) $bp <<= 3;
$bp |= $add;
if ($bp && (fileperms($fname) & $bp) != $bp)
@chmod($fname,fileperms($fname)|$bp);
}
## GlobToPCRE converts wildcard patterns into pcre patterns for
## inclusion and exclusion. Wildcards beginning with '-' or '!'
## are treated as things to be excluded.
function GlobToPCRE($pat) {
$pat = preg_quote($pat, '/');
$pat = str_replace(array('\\*', '\\?', '\\[', '\\]', '\\^', '\\-', '\\!'),
array('.*', '.', '[', ']', '^', '-', '!'), $pat);
$excl = array(); $incl = array();
foreach(preg_split('/,+\s?/', $pat, -1, PREG_SPLIT_NO_EMPTY) as $p) {
if ($p{0} == '-' || $p{0} == '!') $excl[] = '^'.substr($p, 1).'$';
else $incl[] = "^$p$";
}
return array(implode('|', $incl), implode('|', $excl));
}
## FixGlob changes wildcard patterns without '.' to things like
## '*.foo' (name matches) or 'foo.*' (group matches).
function FixGlob($x, $rep = '$1*.$2') {
return preg_replace('/([\\s,][-!]?)([^\\/.\\s,]+)(?=[\\s,])/', $rep, ",$x,");
}
## MatchPageNames reduces $pagelist to those pages with names
## matching the pattern(s) in $pat. Patterns can be either
## regexes to include ('/'), regexes to exclude ('!'), or
## wildcard patterns (all others).
function MatchPageNames($pagelist, $pat) {
global $Charset, $EnableRangeMatchUTF8;
# allow range matches in utf8; doesn't work on pmwiki.org and possibly elsewhere
$pcre8 = (IsEnabled($EnableRangeMatchUTF8,0) && $Charset=='UTF-8')? 'u' : '';
$pagelist = (array)$pagelist;
foreach((array)$pat as $p) {
if (count($pagelist) < 1) break;
if (!$p) continue;
switch ($p{0}) {
case '/':
$pagelist = preg_grep($p, $pagelist);
continue;
case '!':
$pagelist = array_diff($pagelist, preg_grep($p, $pagelist));
continue;
default:
list($inclp, $exclp) = GlobToPCRE(str_replace('/', '.', $p));
if ($exclp)
$pagelist = array_diff($pagelist, preg_grep("/$exclp/i$pcre8", $pagelist));
if ($inclp)
$pagelist = preg_grep("/$inclp/i$pcre8", $pagelist);
}
}
return $pagelist;
}
## ResolvePageName "normalizes" a pagename based on the current
## settings of $DefaultPage and $PagePathFmt. It's normally used
## during initialization to fix up any missing or partial pagenames.
function ResolvePageName($pagename) {
global $DefaultPage, $DefaultGroup, $DefaultName,
$GroupPattern, $NamePattern, $EnableFixedUrlRedirect;
SDV($DefaultPage, "$DefaultGroup.$DefaultName");
$pagename = preg_replace('!([./][^./]+)\\.html$!', '$1', $pagename);
if ($pagename == '') return $DefaultPage;
$p = MakePageName($DefaultPage, $pagename);
if (!preg_match("/^($GroupPattern)[.\\/]($NamePattern)$/i", $p)) {
header('HTTP/1.1 404 Not Found');
Abort('$[?invalid page name]');
}
if (preg_match("/^($GroupPattern)[.\\/]($NamePattern)$/i", $pagename))
return $p;
if (IsEnabled($EnableFixedUrlRedirect, 1)
&& $p && (PageExists($p) || preg_match('/[\\/.]/', $pagename)))
{ Redirect($p); exit(); }
return MakePageName($DefaultPage, "$pagename.$pagename");
}
## MakePageName is used to convert a string $str into a fully-qualified
## pagename. If $str doesn't contain a group qualifier, then
## MakePageName uses $basepage and $PagePathFmt to determine the
## group of the returned pagename.
function MakePageName($basepage, $str) {
global $MakePageNameFunction, $PageNameChars, $PagePathFmt,
$MakePageNamePatterns;
if (@$MakePageNameFunction) return $MakePageNameFunction($basepage, $str);
SDV($PageNameChars,'-[:alnum:]');
SDV($MakePageNamePatterns, array(
"/'/" => '', # strip single-quotes
"/[^$PageNameChars]+/" => ' ', # convert everything else to space
'/((^|[^-\\w])\\w)/e' => "strtoupper('$1')",
'/ /' => ''));
$str = preg_replace('/[#?].*$/', '', $str);
$m = preg_split('/[.\\/]/', $str);
if (count($m)<1 || count($m)>2 || $m[0]=='') return '';
## handle "Group.Name" conversions
if (@$m[1] > '') {
$group = preg_replace(array_keys($MakePageNamePatterns),
array_values($MakePageNamePatterns), $m[0]);
$name = preg_replace(array_keys($MakePageNamePatterns),
array_values($MakePageNamePatterns), $m[1]);
return "$group.$name";
}
$name = preg_replace(array_keys($MakePageNamePatterns),
array_values($MakePageNamePatterns), $m[0]);
$isgrouphome = count($m) > 1;
foreach((array)$PagePathFmt as $pg) {
if ($isgrouphome && strncmp($pg, '$1.', 3) !== 0) continue;
$pn = FmtPageName(str_replace('$1', $name, $pg), $basepage);
if (PageExists($pn)) return $pn;
}
if ($isgrouphome) {
foreach((array)$PagePathFmt as $pg)
if (strncmp($pg, '$1.', 3) == 0)
return FmtPageName(str_replace('$1', $name, $pg), $basepage);
return "$name.$name";
}
return preg_replace('/[^\\/.]+$/', $name, $basepage);
}
## MakeBaseName uses $BaseNamePatterns to return the "base" form
## of a given pagename -- i.e., stripping any recipe-defined
## prefixes or suffixes from the page.
function MakeBaseName($pagename, $patlist = NULL) {
global $BaseNamePatterns;
if (is_null($patlist)) $patlist = (array)@$BaseNamePatterns;
foreach($patlist as $pat => $rep)
$pagename = preg_replace($pat, $rep, $pagename);
return $pagename;
}
## PCache caches basic information about a page and its attributes--
## usually everything except page text and page history. This makes
## for quicker access to certain values in PageVar below.
function PCache($pagename, $page) {
global $PCache;
foreach($page as $k=>$v)
if ($k!='text' && strpos($k,':')===false) $PCache[$pagename][$k]=$v;
}
## SetProperty saves a page property into $PCache. For convenience
## it returns the $value of the property just set. If $sep is supplied,
## then $value is appended to the current property (with $sep as
## as separator) instead of replacing it. If $keep is suplied and the
## property already exists, then $value will be ignored.
function SetProperty($pagename, $prop, $value, $sep=NULL, $keep=NULL) {
global $PCache, $KeepToken;
NoCache();
$prop = "=p_$prop";
$value = preg_replace("/$KeepToken(\\d.*?)$KeepToken/e",
"\$GLOBALS['KPV']['$1']", $value);
if (!is_null($sep) && isset($PCache[$pagename][$prop]))
$value = $PCache[$pagename][$prop] . $sep . $value;
if (is_null($keep) || !isset($PCache[$pagename][$prop]))
$PCache[$pagename][$prop] = $value;
return $PCache[$pagename][$prop];
}
## PageTextVar loads a page's text variables (defined by
## $PageTextVarPatterns) into a page's $PCache entry, and returns
## the property associated with $var.
function PageTextVar($pagename, $var) {
global $PCache, $PageTextVarPatterns, $MaxPageTextVars;
SDV($MaxPageTextVars, 500);
static $status;
if(@$status["$pagename:$var"]++ > $MaxPageTextVars) return '';
if (!@$PCache[$pagename]['=pagetextvars']) {
$pc = &$PCache[$pagename];
$pc['=pagetextvars'] = 1;
$page = RetrieveAuthPage($pagename, 'read', false, READPAGE_CURRENT);
if ($page) {
foreach((array)$PageTextVarPatterns as $pat)
if (preg_match_all($pat, IsEnabled($PCache[$pagename]['=preview'],@$page['text']),
$match, PREG_SET_ORDER))
foreach($match as $m) {
$t = preg_replace("/\\{\\$:{$m[2]}\\}/", '', $m[3]);
$pc["=p_{$m[2]}"] = Qualify($pagename, $t);
}
}
}
return @$PCache[$pagename]["=p_$var"];
}
function PageVar($pagename, $var, $pn = '') {
global $Cursor, $PCache, $FmtPV, $AsSpacedFunction, $ScriptUrl,
$EnablePathInfo;
if ($var == '$ScriptUrl') return PUE($ScriptUrl);
if ($pn) {
$pn = isset($Cursor[$pn]) ? $Cursor[$pn] : MakePageName($pagename, $pn);
} else $pn = $pagename;
if ($pn) {
if (preg_match('/^(.+)[.\\/]([^.\\/]+)$/', $pn, $match)
&& !isset($PCache[$pn]['time'])
&& (!@$FmtPV[$var] || strpos($FmtPV[$var], '$page') !== false)) {
$page = ReadPage($pn, READPAGE_CURRENT);
PCache($pn, $page);
}
@list($d, $group, $name) = $match;
$page = &$PCache[$pn];
if(strpos($FmtPV[$var], '$authpage') !== false) {
if(!isset($page['=auth']['read'])) {
$x = RetrieveAuthPage($pn, 'read', false, READPAGE_CURRENT);
if($x) PCache($pn, $x);
}
if(@$page['=auth']['read']) $authpage = &$page;
}
} else { $group = ''; $name = ''; }
if (@$FmtPV[$var]) return eval("return ({$FmtPV[$var]});");
if (strncmp($var, '$:', 2)==0) return PageTextVar($pn, substr($var, 2));
return '';
}
## FmtPageName handles $[internationalization] and $Variable
## substitutions in strings based on the $pagename argument.
function FmtPageName($fmt, $pagename) {
# Perform $-substitutions on $fmt relative to page given by $pagename
global $GroupPattern, $NamePattern, $EnablePathInfo, $ScriptUrl,
$GCount, $UnsafeGlobals, $FmtV, $FmtP, $FmtPV, $PCache, $AsSpacedFunction;
if (strpos($fmt,'$')===false) return $fmt;
$fmt = preg_replace('/\\$([A-Z]\\w*Fmt)\\b/e','$GLOBALS[\'$1\']',$fmt);
$fmt = preg_replace('/\\$\\[(?>([^\\]]+))\\]/e',"XL(PSS('$1'))",$fmt);
$fmt = str_replace('{$ScriptUrl}', '$ScriptUrl', $fmt);
$fmt =
preg_replace('/\\{(\\$[A-Z]\\w+)\\}/e', "PageVar(\$pagename, '$1')", $fmt);
if (strpos($fmt,'$')===false) return $fmt;
if ($FmtP) $fmt = preg_replace(array_keys($FmtP), array_values($FmtP), $fmt);
static $pv, $pvpat;
if ($pv != count($FmtPV)) {
$pvpat = str_replace('$', '\\$', implode('|', array_keys($FmtPV)));
$pv = count($FmtPV);
}
$fmt = preg_replace("/(?:$pvpat)\\b/e", "PageVar(\$pagename, '$0')", $fmt);
$fmt = preg_replace('!\\$ScriptUrl/([^?#\'"\\s<>]+)!e',
(@$EnablePathInfo) ? "'$ScriptUrl/'.PUE('$1')" :
"'$ScriptUrl?n='.str_replace('/','.',PUE('$1'))",
$fmt);
if (strpos($fmt,'$')===false) return $fmt;
static $g;
if ($GCount != count($GLOBALS)+count($FmtV)) {
$g = array();
foreach($GLOBALS as $n=>$v) {
if (is_array($v) || is_object($v) ||
isset($FmtV["\$$n"]) || in_array($n,$UnsafeGlobals)) continue;
$g["\$$n"] = $v;
}
$GCount = count($GLOBALS)+count($FmtV);
krsort($g); reset($g);
}
$fmt = str_replace(array_keys($g),array_values($g),$fmt);
$fmt = preg_replace('/(?>(\\$[[:alpha:]]\\w+))/e',
"isset(\$FmtV['$1']) ? \$FmtV['$1'] : '$1'", $fmt);
return $fmt;
}
## FmtPageTitle returns the page title, or the page name
## It localizes standard technical pages (RecentChanges...)
function FmtPageTitle($title, $name, $spaced=0) {
if($title>'') return str_replace("$", "$", $title);
global $SpaceWikiWords, $AsSpacedFunction;
if(preg_match("/^(Site(Admin)?
|(All)?(Site|Group)(Header|Footer|Attributes)
|(Side|Left|Right)Bar
|(Wiki)?Sand[Bb]ox
|(All)?Recent(Changes|Uploads)|(Auth|Edit)Form
|InterMap|PageActions|\\w+QuickReference|\\w+Templates
|NotifyList|AuthUser|ApprovedUrls|(Block|Auth)List
)$/x", $name) && $name != XL($name))
return XL($name);
return ($spaced || $SpaceWikiWords) ? $AsSpacedFunction($name) : $name;
}
## FmtTemplateVars uses $vars to replace all occurrences of
## {$$key} in $text with $vars['key'].
function FmtTemplateVars($text, $vars, $pagename = NULL) {
global $FmtPV, $EnableUndefinedTemplateVars;
if ($pagename) {
$pat = implode('|', array_map('preg_quote', array_keys($FmtPV)));
$text = preg_replace("/\\{\\$($pat)\\}/e",
"PageVar('$pagename', '$1')", $text);
}
foreach(preg_grep('/^[\\w$]/', array_keys($vars)) as $k)
if (!is_array($vars[$k]))
$text = str_replace("{\$\$$k}", $vars[$k], $text);
if(! IsEnabled($EnableUndefinedTemplateVars, 0))
$text = preg_replace("/\\{\\$\\$\\w+\\}/", '', $text);
return $text;
}
## The XL functions provide translation tables for $[i18n] strings
## in FmtPageName().
function XL($key) {
global $XL,$XLLangs;
foreach($XLLangs as $l) if (isset($XL[$l][$key])) return $XL[$l][$key];
return $key;
}
function XLSDV($lang,$a) {
global $XL;
foreach($a as $k=>$v) { if (!isset($XL[$lang][$k])) $XL[$lang][$k]=$v; }
}
function XLPage($lang,$p,$nohtml=false) {
global $TimeFmt,$XLLangs,$FarmD, $EnableXLPageScriptLoad;
$page = ReadPage($p, READPAGE_CURRENT);
if (!$page) return;
$text = preg_replace("/=>\\s*\n/",'=> ',@$page['text']);
foreach(explode("\n",$text) as $l)
if (preg_match('/^\\s*[\'"](.+?)[\'"]\\s*=>\\s*[\'"](.+)[\'"]/',$l,$m))
$xl[stripslashes($m[1])] = stripslashes($nohtml? htmlspecialchars($m[2]): $m[2]);
if (isset($xl)) {
if (IsEnabled($EnableXLPageScriptLoad, 0) && @$xl['xlpage-i18n']) {
$i18n = preg_replace('/[^-\\w]/','',$xl['xlpage-i18n']);
include_once("$FarmD/scripts/xlpage-$i18n.php");
}
if (@$xl['Locale']) setlocale(LC_ALL,$xl['Locale']);
if (@$xl['TimeFmt']) $TimeFmt=$xl['TimeFmt'];
if (!in_array($lang, $XLLangs)) array_unshift($XLLangs, $lang);
XLSDV($lang,$xl);
}
}
## CmpPageAttr is used with uksort to order a page's elements with
## the latest items first. This can make some operations more efficient.
function CmpPageAttr($a, $b) {
@list($x, $agmt) = explode(':', $a);
@list($x, $bgmt) = explode(':', $b);
if ($agmt != $bgmt)
return ($agmt==0 || $bgmt==0) ? $agmt - $bgmt : $bgmt - $agmt;
return strcmp($a, $b);
}
## class PageStore holds objects that store pages via the native
## filesystem.
class PageStore {
var $dirfmt;
var $iswrite;
var $attr;
function PageStore($d='$WorkDir/$FullName', $w=0, $a=NULL) {
$this->dirfmt = $d; $this->iswrite = $w; $this->attr = (array)$a;
$GLOBALS['PageExistsCache'] = array();
}
function pagefile($pagename) {
global $FarmD;
$dfmt = $this->dirfmt;
if ($pagename > '') {
$pagename = str_replace('/', '.', $pagename);
if ($dfmt == 'wiki.d/{$FullName}') # optimizations for
return "wiki.d/$pagename"; # standard locations
if ($dfmt == '$FarmD/wikilib.d/{$FullName}') #
return "$FarmD/wikilib.d/$pagename"; #
if ($dfmt == 'wiki.d/{$Group}/{$FullName}')
return preg_replace('/([^.]+).*/', 'wiki.d/$1/$0', $pagename);
}
return FmtPageName($dfmt, $pagename);
}
function read($pagename, $since=0) {
$newline = '';
$urlencoded = false;
$pagefile = $this->pagefile($pagename);
if ($pagefile && ($fp=@fopen($pagefile, "r"))) {
$page = $this->attr;
while (!feof($fp)) {
$line = fgets($fp, 4096);
while (substr($line, -1, 1) != "\n" && !feof($fp))
{ $line .= fgets($fp, 4096); }
$line = rtrim($line);
if ($urlencoded) $line = urldecode(str_replace('+', '%2b', $line));
@list($k,$v) = explode('=', $line, 2);
if (!$k) continue;
if ($k == 'version') {
$ordered = (strpos($v, 'ordered=1') !== false);
$urlencoded = (strpos($v, 'urlencoded=1') !== false);
if (strpos($v, 'pmwiki-0.')!==false) $newline="\262";
}
if ($k == 'newline') { $newline = $v; continue; }
if ($since > 0 && preg_match('/:(\\d+)/', $k, $m) && $m[1] < $since) {
if ($ordered) break;
continue;
}
if ($newline) $v = str_replace($newline, "\n", $v);
$page[$k] = $v;
}
fclose($fp);
}
return $this->recode($pagename, @$page);
}
function write($pagename,$page) {
global $Now, $Version, $Charset;
$page['charset'] = $Charset;
$page['name'] = $pagename;
$page['time'] = $Now;
$page['host'] = $_SERVER['REMOTE_ADDR'];
$page['agent'] = @$_SERVER['HTTP_USER_AGENT'];
$page['rev'] = @$page['rev']+1;
unset($page['version']); unset($page['newline']);
uksort($page, 'CmpPageAttr');
$s = false;
$pagefile = $this->pagefile($pagename);
$dir = dirname($pagefile); mkdirp($dir);
if (!file_exists("$dir/.htaccess") && $fp = @fopen("$dir/.htaccess", "w"))
{ fwrite($fp, "Order Deny,Allow\nDeny from all\n"); fclose($fp); }
if ($pagefile && ($fp=fopen("$pagefile,new","w"))) {
$r0 = array('%', "\n", '<');
$r1 = array('%25', '%0a', '%3c');
$x = "version=$Version ordered=1 urlencoded=1\n";
$s = true && fputs($fp, $x); $sz = strlen($x);
foreach($page as $k=>$v)
if ($k > '' && $k{0} != '=') {
$x = str_replace($r0, $r1, "$k=$v") . "\n";
$s = $s && fputs($fp, $x); $sz += strlen($x);
}
$s = fclose($fp) && $s;
$s = $s && (filesize("$pagefile,new") > $sz * 0.95);
if (file_exists($pagefile)) $s = $s && unlink($pagefile);
$s = $s && rename("$pagefile,new", $pagefile);
}
$s && fixperms($pagefile);
if (!$s)
Abort("Cannot write page to $pagename ($pagefile)...changes not saved");