<?php if (!defined('PmWiki')) exit();
/**
DoTheRightThing link redirector for PmWiki
Written by (c) Petko Yotov 2009-2023 pmwiki.org/Petko
This text is written for PmWiki; 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 3 of the License, or
(at your option) any later version. See pmwiki.php for full details
and lack of warranty.
*/
# Version date
$RecipeInfo['DoTheRightThing']['Version'] = '20230622';
SDVA($DTRT_links, array(
'g' => 'https://www.google.com/search?q=$1',
'w' => 'https://en.wikipedia.org/wiki/Special:Search?go=1&search=$1',
'_default' => 'https://www.google.com/search?q=$1',
));
SDVA($HandleActions, array('dtrt'=>'HandleDTRT'));
SDVA($HTMLHeaderFmt, array('DTRT-opensearch'=>"<link rel='search' type='application/opensearchdescription+xml'
title='DTRT for this page' href='{\$PageUrl}?action=dtrt&q=opensearch'/>"));
function HandleDTRT($pagename, $auth="read") {
global $DTRT_links, $WikiTitle, $EnableRedirect, $Charset;
#will ask for password if needed
$page = RetrieveAuthPage($pagename,$auth,1, READPAGE_CURRENT);
if (preg_match_all("/^\\s*(\\S*)\\s*:[^\\S\n]+(\\S*)/m", $page['text'],
$match, PREG_SET_ORDER)) {
foreach($match as $m)
{
$tmp = explode(',', $m[1]);
foreach($tmp as $key)
$DTRT_links[$key] = $m[2];
}
}
list($k, $q) = explode(' ', urldecode(stripmagic($_GET['q'])), 2);
if($k == "opensearch") {
$url = PageVar($pagename, '$PageUrl');
$xmltpl = <<<EOF
<?xml version="1.0" encoding="UTF-8"?>
<OpenSearchDescription xmlns="http://a9.com/-/spec/opensearch/1.1/">
<ShortName>DTRT {$WikiTitle}</ShortName>
<Description>Do the right thing custom search</Description>
<Url type="text/html" method="get" template="{$url}?action=dtrt&q={searchTerms}"></Url>
<InputEncoding>UTF-8</InputEncoding>
</OpenSearchDescription>
EOF;
header("Content-type: application/opensearchdescription+xml");
echo $xmltpl;
exit;
}
elseif ($k == "setdefault") {
$q = trim($q);
if($q) {
setcookie('DTRT_default', $q);
$GLOBALS['MessagesFmt'][] = "Default redirection set to '$q'";
}
else {
setcookie ("DTRT_default", "", time() - 3600);
$GLOBALS['MessagesFmt'][] = "Default redirection reset";
}
return HandleBrowse($pagename, 'read');
}
if(!isset($DTRT_links[$k]) || $DTRT_links[$k] == 'null' || $DTRT_links[$k] == '' ) {
$rxfound = 0;
foreach ($DTRT_links as $rx=>$u) {
if (!preg_match('/^\\/.*\\/i?$/', $rx)) continue;
if (! preg_match($rx, $k)) continue;
$rxfound = 1;
$k = $rx; # no 'break', later defs override earlier ones
}
if(!$rxfound) {
$qd = @$_COOKIE["DTRT_default"];
if ($qd && @$DTRT_links[$qd]) {
$k = $qd;
}
else $k = '_default';
$q = stripmagic($_GET['q']);
}
}
$where = $DTRT_links[$k];
if(strpos($where, 'function:')===0 ) {
$func = str_replace('function:', "DTRT_", $where);
if(! function_exists($func))
Abort("User function '$func' does not exist.");
$url = $func($q);
}
else {
$url = str_replace('$1', rawurlencode($q), $where);
$url = str_replace('$2', rawurlencode(utf8_decode($q)), $url);
}
if(!$url) Abort("Bad configuration, where='$where', key='$k'; query='$q'.");
if($url{0} == ',') {
$url = substr($url, 1);
$EnableRedirect = 0;
}
if(strpos($url, '&&')) {
$opt = ParseArgs(str_replace('&&',' ', $url),'(?>(\\w+)[=])');
$frm = "<!DOCTYPE html><html>
<head><meta http-equiv='Content-Type' content='text/html; charset=$Charset'/></head>
<body>
Redirecting...
<form name='dtrt' action='{$opt[''][0]}' method='post' rel='noreferrer'>";
foreach($opt as $k=>$v) {
if($k == '' || $k == '#') continue;
$v = PHSC(urldecode($v), ENT_QUOTES);
$frm .= "<input type='hidden' name='$k' value='$v'/>";
}
$frm .= "<input type='submit'/></form>";
if(IsEnabled($EnableRedirect, 1))
$frm .= "<script>
document.dtrt.submit();
</script>";
$frm .= "</body></html>";
die($frm);
}
$url = PUE($url);
Redirect($pagename, $url);
}