mirror of
https://github.com/php/web-php.git
synced 2026-04-01 04:02:10 +02:00
661cd64838
a cookie for all mirror sites, and use it for country and last language cookies set by our code Also add code to remember the last search term and selected search option in a cookie (JS code will come to handle this on the client side)
417 lines
14 KiB
PHP
417 lines
14 KiB
PHP
<?php
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/* $Id$ */
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include_once "prepend.inc";
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/*
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See http://php.net/mirroring-search for directions if you want
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to run the search engine on your mirror site.
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*/
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// ============================================================================
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// For safety reasons, we disallow the
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// setting of this variable from outside
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unset($htsearch_prog);
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// Load in mirror specific configuration data (htdig path)
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if (file_exists("configuration.inc")) {
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include_once 'configuration.inc';
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}
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// Override configuration.inc setting with per vhost setting
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// [this will be used in the future instead of configuration.inc]
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if (isset($_SERVER['HTSEARCH_PROG'])) {
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$htsearch_prog = $_SERVER['HTSEARCH_PROG'];
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}
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// If the program to use to search is not excutable, we cannot
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// get search results, regardless of what we do
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if (!@is_executable($htsearch_prog)) {
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unset($htsearch_prog);
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}
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// ============================================================================
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/* Form parameters expected:
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pattern - search keywords
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lang - language to limit search to [this is not
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used currently in searches, only for redirection!!!]
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show - target of search action
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base - base URL to point result links to
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*/
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// If PHP added some slashes to quotes, get rid of them
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if ($MQ) {
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if (isset($pattern)) { $pattern = stripslashes($pattern); }
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if (isset($base)) { $base = stripslashes($base); }
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if (isset($lang)) { $lang = stripslashes($lang); }
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}
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// Set language to the preferred one if not set
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// (also preserves $lang if provided in POST/GET)
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if (!isset($lang) && isset($LANG)) {
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$lang = $LANG;
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}
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// Only allow alphabetical chars in lang (security)
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if (!preg_match("!^\\w+$!", $lang)) {
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$lang = default_language();
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}
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// Only allow alphabetical chars in show (security)
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if (!isset($show) || !preg_match("!^\\w+$!", $show)) {
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$show = "wholesite";
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}
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// Set base if it is not specified
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if (!isset($base)) {
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// The base is the referrer site. Check if it was a PHP mirror site,
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// and not some other site offering a direct PHP.net search form.
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// Links should not be pointed back to a non PHP.net mirror site
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if (isset($_SERVER['HTTP_REFERER']) && preg_match("!^http://(\\w{2}\\d?)\\.php\\.net/!", $HTTP_REFERER, $matches) &&
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$matches[1] != 'qa') {
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$base = "http://{$matches[1]}.php.net/";
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}
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unset($matches);
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}
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// If we are on the same site, there is no need for the base
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// This makes URLs shorter and POST data smaller.
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if (isset($base) && $base == $MYSITE) {
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unset($base);
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}
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// If we still have a base, we need to make relative
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// links be relative to the original server
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unset($SEARCH_BASE);
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if (isset($base)) {
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$SEARCH_BASE = $base . "search.php";
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}
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// ============================================================================
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// We received something to search for
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if (isset($pattern)) {
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// Remember the last search settings for a week
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mirror_setcookie("LAST_SEARCH", "$show,$pattern", 60*60*24*7);
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// Mailing list search base URL
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$ml_url = "http://marc.theaimsgroup.com/";
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// Do redirections for external search engines
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switch ($show) {
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// Quick reference lookup
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case "quickref" :
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header("Location: manual-lookup.php?pattern=" . urlencode($pattern) . "&lang=$lang");
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exit;
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// PHP-General mailing list search
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case "maillist" :
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$query = "l=php-general&r=1&w=2&q=b&s=" . urlencode($pattern);
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header("Location: $ml_url?$query");
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exit;
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// Internals (known as php-dev by marc) mailing list search
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case "devlist" :
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$query = "l=php-dev&r=1&w=2&q=b&s=" . urlencode($pattern);
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header("Location: $ml_url?$query");
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exit;
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// PHPDoc mailing list search
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case "phpdoc" :
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$query = "l=phpdoc&r=1&w=2&q=b&s=" . urlencode($pattern);
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header("Location: $ml_url?$query");
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exit;
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// Bug database search
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case "bugdb" :
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// Redirect to bug page in case of exact number
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if (preg_match("!^\\d+$!", $pattern)) {
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header("Location: http://bugs.php.net/$pattern");
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}
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// Redirect to bug search page in case of some other pattern
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else {
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$location = "http://bugs.php.net/search.php";
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$query = "cmd=Display+Bugs&status=All&bug_type=Any&search_for=" . urlencode($pattern);
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header("Location: $location?$query");
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}
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exit;
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}
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// If some local search is needed and we have no support for
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// it, send the user to the central search page on php.net
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if (!isset($htsearch_prog)) {
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// We cannot redirect to anywhere, absolute failure
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if (is_primary_site()) {
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commonHeader("Search Service");
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echo "<b>The search service is currently not available.</b>.<br />";
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echo "Please try later.\n";
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commonFooter();
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exit;
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}
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// We can redirect to the php.net search page
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else {
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$location = "http://ch.php.net/search.php";
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$query = "show=$show&pattern=" . urlencode($pattern) .
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"&base=" . urlencode($MYSITE) . "&lang=$lang";
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header("Location: $location?$query");
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exit;
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}
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}
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// The local search engine is in place, and some
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// local search function is needed, so try to do it
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else {
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// Print out common headers
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commonHeader("Search Results");
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echo "<h1>Search Results</h1>\n";
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// This will be the link for new searches (a clean search page)
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$sourceurl = htmlentities(!isset($base) ? $PHP_SELF : $base . substr($PHP_SELF, 1));
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// If the pattern is empty, print out an error, and exit
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$pattern = trim($pattern);
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if ($pattern == "") {
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echo "<b>Error:</b> No search words specified.<br /><br />";
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echo "Click here for a <a href=\"$sourceurl\">New Search</a><br /><br />\n";
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commonFooter();
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exit;
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}
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// We have something to search for, now encode it as appropriate
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$words = escapeshellcmd(urlencode($pattern));
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// Restrict the search to the English manual or the
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// whole site depending on what the request asked for
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if ($show == "manual") {
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$restrict = $MYSITE . "manual/en";
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$where = "in the PHP documentation";
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} else {
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$restrict = $MYSITE;
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$where = "on the PHP website";
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}
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// If we have a page restriction, provide it for htdig
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if (isset($page)) { $page = intval($page); $pgr = "&page=$page"; } else { $pgr = ""; }
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// Always exclude the printer friendly pages of both types
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// The '.php/' exclude is a fix for the bogus index database of php.net,
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// and may be removed if the index problems are resolved [see bug #20870]
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$exclude = escapeshellcmd(urlencode("/print/|/printwn/|.php/|/manual/howto/"));
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// Create the htdig query, and execute the engine
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$query = "words=$words&config=php&exclude=$exclude&restrict=$restrict$pgr";
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exec("$htsearch_prog \"$query\"", $result);
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// Count the number of result rows
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$rc = count($result);
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// This means that some error occured (the output templates are in
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// Mirrors-htdig.tgz, and one of those should appear on the output)
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if ($rc < 2) { searchError(); }
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// Create versions insertable in HTML output and URLs too
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$htmlpt = htmlspecialchars($pattern);
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$urlpt = urlencode($pattern);
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// If the third row says there is no match, then we need to inform the user
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if ($result[2] == "NOMATCH") {
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echo "Sorry, no documents matched your search for <b>\"$htmlpt\"</b>.<br /><br />";
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echo "Continue your search at ";
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echo "<a href=\"http://www.alltheweb.com/search?q=$urlpt\">AllTheWeb</a> ";
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echo "or <a href=\"http://www.google.com/search?q=$urlpt\">Google</a><br /><br />";
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echo "Click here for a <a href=\"$sourceurl\">New Search</a> on the PHP website<br /><br />\n";
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commonFooter();
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exit;
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}
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// If we have not received the NOMATCH sign, then there need to
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// be at least one result. The first 7 rows are meta information,
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// the 8th row is the first result. Htdig seems to have a bug to
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// return valid meta information even if there are no results
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// returned, we would like to avoid that here...
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if ($rc < 8) { searchError(); }
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// We have matches, so grab the info from the output
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// (the template for this is phphead.html in Mirrors-htdig.tgz)
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list(, , $matches, $firstdisplayed, $lastdisplayed, $page, $pages) = $result;
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// Detect htsearch error, which is returned in a HTML output file
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if (strpos($matches, "error") > 0) { searchError(); }
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// String to carry on the search parameters in prev/next URLs
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$baseurl = substr($PHP_SELF, 1) . "?pattern=" . urlencode($pattern) . "&show=$show";
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if (isset($base)) { $baseurl .= "&base=" . urlencode($base); }
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// We need to preserve the state with a full URL,
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// as remote searches would otherwise make these links
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// relative to the originating server
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$baseurl = $MYSITE . htmlentities($baseurl);
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// Print out search results information header
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echo "$matches documents match your search for '<b>$htmlpt</b>' $where:<br /><br />\n";
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echo "Click here for a <a href=\"$sourceurl\">New Search</a><br /><br />\n";
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// Top navigation
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makeBar($page, $pages, $baseurl, $firstdisplayed, $lastdisplayed);
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// Skip response header, start from index 7
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$i = 7;
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while ($i < $rc) {
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// If we have not performed a "remote search", leave the text as is
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if (!isset($base)) {
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echo preg_replace("/\/gifs\/star/i", "/images/star", $result[$i]);
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}
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// Otherwise modify links to point to the referrer site
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else {
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echo preg_replace("!http://[^.]+\\.php\\.net/!i", htmlspecialchars($base), preg_replace("/\/gifs\/star/i", "/images/star", $result[$i]));
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}
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// Make HTML output readable
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echo "\n";
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// If the result element ended (a </div> or a </dl>
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// depending on htdig version and setup), print out delimiter
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if (preg_match("!(</div>|</dl>)$!", $result[$i])) {
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echo hdelim();
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}
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// Go to next result element
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$i++;
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}
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echo "<br />\n";
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// Bottom navigation
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makeBar($page, $pages, $baseurl, $firstdisplayed, $lastdisplayed);
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// Indicate what search engine we use
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echo "<p>Website search powered by " . make_link("http://www.htdig.org/", "ht://Dig") . "</p>\n";
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// End HTML page with footer
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commonFooter();
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}
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}
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// else of isset($pattern)
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else {
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// Print out common header
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commonHeader("Site Search");
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// Choose the target for the search form
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if (isset($htsearch_prog)) {
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$target = $PHP_SELF;
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} else {
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$target = "http://ch.php.net/search.php";
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}
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?>
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<h1>Search</h1>
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<form action="<?php echo $target; ?>" method="post">
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<input type="hidden" name="lang" value="<?php echo $lang; ?>" />
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<input type="hidden" name="base" value="<?php echo htmlspecialchars($MYSITE); ?>" />
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<table cellspacing="0" cellpadding="2" border="0" align="center">
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<tr valign="top">
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<td align="right">Search for:<br /></td>
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<td>
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<input type="text" name="pattern" value="" size="30" />
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<input type="submit" value=" Search " /><br>
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</td>
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</tr>
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<tr valign="top">
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<td align="right">
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Restrict the search to:<br /></td>
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<td>
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<select name="show">
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<?php
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if (!isset($show)) { $show = 'quickref'; }
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$searchoptions = array(
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"quickref" => "function list",
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"wholesite" => "whole site",
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"manual" => "online documentation [en]",
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"bugdb" => "bug database",
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"maillist" => "general mailing list",
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"devlist" => "developer mailing list",
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"phpdoc" => "documentation mailing list",
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);
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// Print out an <option> for all search options
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foreach ($searchoptions as $key => $value) {
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echo ' <option value="' . $key . '"' .
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($key == $show ? ' selected="selected"' : '') .
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'>' . $value . "</option>\n";
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}
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?>
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</select><br />
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</td>
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</tr>
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</table>
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</form>
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<?php
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commonFooter();
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} // endof else isset($pattern)
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// Prints out the top and bottom bar on the search page. Parameters:
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// current page number, total page number, search URL without page
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// parameter, nunber of the first result displayed, and number of
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// the last result displayed
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function makeBar($page, $pages, $baseurl, $firstdisplayed, $lastdisplayed)
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{
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// Initialize prev and next values
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$prev = $next = ' ';
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// Not the first page, we need link to go back
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if ($page > 1) {
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$prev = make_link(
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$baseurl . '&page=' . ($page - 1),
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make_image('caret-l.gif', '<') . 'previous page'
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);
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}
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// Not the last page, we need link to go forward
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if ($page < $pages) {
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$next = make_link(
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$baseurl . '&page=' . ($page + 1),
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'next page' . make_image('caret-r.gif', '>')
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);
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}
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// This goes to the center
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$display = "<b>Displaying results $firstdisplayed to $lastdisplayed</b>";
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// Print out navigation table
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echo '<table border="0" width="620" bgcolor="#e0e0e0" cellpadding="0" cellspacing="4">';
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echo '<tr>';
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echo '<td align="middle" colspan="2">' . $display . '<br /></td>';
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echo '</tr>';
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echo '<tr bgcolor="#cccccc"><td colspan="2">' . spacer(1, 1, TRUE) . '<br /></td></tr>';
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echo '<tr>';
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echo '<td align="left">' . $prev . '<br /></td>';
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echo '<td align="right">' . $next . '<br /></td>';
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echo '</tr>';
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echo '</table><br />' . "\n";
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}
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// This message is printed out if an error
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// is encountered while searching the site
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function searchError()
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{
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echo '<b>There was an error executing this query.</b><br /><br />
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Please try later, or <a href="/mirrors.php">use another mirror
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with local search support</a>.<br /><br />';
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commonFooter();
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exit;
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}
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