From c7326fa0883c1a45b7364426be58fd0a24fe085c Mon Sep 17 00:00:00 2001
From: =?utf8?q?Roland=20H=C3=A4der?= <roland@mxchange.org>
Date: Tue, 8 Mar 2011 12:25:38 +0000
Subject: [PATCH] Fix for wrong detection of broken HTTP server

---
 inc/functions.php      | 19 +++++++++++++++++++
 inc/http-functions.php | 17 +++++++++++------
 2 files changed, 30 insertions(+), 6 deletions(-)

diff --git a/inc/functions.php b/inc/functions.php
index 119c23891d..1c9820ccef 100644
--- a/inc/functions.php
+++ b/inc/functions.php
@@ -2289,6 +2289,25 @@ function detectMultiBytePrefix ($str) {
 	return $mbPrefix;
 }
 
+// Searches the given array for a sub-string match and returns all found keys in an array
+function getArrayKeysFromSubStrArray ($heystack, array $needles, $offset = 0) {
+	// Init array for all found keys
+	$keys = array();
+
+	// Now check all entries
+	foreach ($needles as $key => $needle) {
+		// Do we have found a partial string?
+		//* DEBUG: */ logDebugMessage(__FUNCTION__, __LINE__, 'heystack='.$heystack.',key='.$key.',needle='.$needle.',offset='.$offset);
+		if (strpos($heystack, $needle, $offset) !== false) {
+			// Add the found key
+			$keys[] = $key;
+		} // END - if
+	} // END - foreach
+
+	// Return the array
+	return $keys;
+}
+
 //-----------------------------------------------------------------------------
 // Automatically re-created functions, all taken from user comments on www.php.net
 //-----------------------------------------------------------------------------
diff --git a/inc/http-functions.php b/inc/http-functions.php
index b0cbca319d..6289d6d2b8 100644
--- a/inc/http-functions.php
+++ b/inc/http-functions.php
@@ -267,7 +267,7 @@ function sendRawRequest ($host, $request) {
 		// Check for broken HTTP implementations
 		if (substr(strtolower($line), 0, 7) == 'server:') {
 			// Anomic (see http://anomic.de, http://yacy.net) is currently broken
-			$GLOBALS['is_http_server_broken'] = in_array(trim(substr(strtolower($line), 7)), array('anomichttpd'));
+			$GLOBALS['is_http_server_broken'] = (count(getArrayKeysFromSubStrArray(strtolower($line), array('anomichttpd'))) > 0);
 		} // END - if
 
 		// Add it to response
@@ -467,7 +467,7 @@ if (!function_exists('http_build_query')) {
 			if (is_array($v) || is_object($v)) {
 				array_push($ret, http_build_query($v, '', $sep, $k));
 			} else {
-				array_push($ret, $k.'='.urlencode($v));
+				array_push($ret, $k . '=' . urlencode($v));
 			}
 		} // END - foreach
 
@@ -543,8 +543,9 @@ offset[<em>'.__LINE__.'</em>]='.$offset.'<br />';
 
 			/*
 			 * Hack for e.g. YaCy HTTPDaemon (Anomic Server), this HTTP server
-			 * is currently (revision 7567) broken and does not include the \r\n
-			 * characters when it does sent "chunked" messages.
+			 * is currently (revision 7567 and maybe earlier) broken and does
+			 * not include the \r\n characters when it sents a "chunked" HTTP
+			 * message.
 			 */
 			$count = 0;
 			if (isBrokenHttpServerImplentation()) {
@@ -552,7 +553,11 @@ offset[<em>'.__LINE__.'</em>]='.$offset.'<br />';
 				$count = call_user_func_array($mbPrefix . 'substr_count', array($next, getConfig('HTTP_EOL')));
 			} // END - if
 
-			// Correct it because we need to subtract occurrences of \r\n
+			/*
+			 * Correct chunk length because some broken HTTP server
+			 * implementation subtract occurrences of \r\n in their chunk
+			 * lengths.
+			 */
 			$chunkLen = hexdec(rtrim($chunkLenHex, getConfig('HTTP_EOL'))) - ($count * strlen(getConfig('HTTP_EOL')));
 
 			// Add next chunk to $dechunk
@@ -575,7 +580,7 @@ chunk=<pre>'.replaceReturnNewLine(htmlentities($chunk)).'</pre>');
 				break;
 			} // END - if
 
-			// Calculate next offset of chunk
+			// Calculate offset of next chunk
 			$offset = call_user_func_array($mbPrefix . 'strpos', array($chunk, getConfig('HTTP_EOL'), $offset + $chunkLen)) + 2;
 
 			/* DEBUG: *
-- 
2.30.2