From f41f0417afd1d0ad0609fde76a99d907117ed669 Mon Sep 17 00:00:00 2001
From: Michael Wallner <mike@php.net>
Date: Fri, 31 Mar 2006 11:07:54 +0000
Subject: [PATCH] - Improved performance of the message and header parser *
 Fixed internal http_parse_headers() always returning success

---
 http_functions.c   |  1 +
 http_headers_api.c | 18 ++++++------------
 http_info_api.c    |  2 +-
 package2.xml       |  2 ++
 php_http_api.h     | 23 ++++++++++++++---------
 5 files changed, 24 insertions(+), 22 deletions(-)

diff --git a/http_functions.c b/http_functions.c
index aeb41da..2cd1dfe 100644
--- a/http_functions.c
+++ b/http_functions.c
@@ -1034,6 +1034,7 @@ PHP_FUNCTION(http_parse_headers)
 	array_init(return_value);
 	if (SUCCESS != http_parse_headers(header, return_value)) {
 		zval_dtor(return_value);
+		http_error(HE_WARNING, HTTP_E_MALFORMED_HEADERS, "Failed to parse headers");
 		RETURN_FALSE;
 	}
 }
diff --git a/http_headers_api.c b/http_headers_api.c
index c778662..7ac4756 100644
--- a/http_headers_api.c
+++ b/http_headers_api.c
@@ -326,22 +326,14 @@ PHP_HTTP_API http_range_status _http_get_request_ranges(HashTable *ranges, size_
 PHP_HTTP_API STATUS _http_parse_headers_ex(const char *header, HashTable *headers, zend_bool prettify, 
 	http_info_callback callback_func, void **callback_data TSRMLS_DC)
 {
-	const char *colon = NULL, *line = NULL, *begin = header;
-	const char *body = http_locate_body(header);
-	size_t header_len;
+	const char *colon = NULL, *line = header;
 	zval array;
 
 	INIT_ZARR(array, headers);
 	
-	if (body) {
-		header_len = body - header;
-	} else {
-		header_len = strlen(header) + 1;
-	}
-	line = header;
-	
-	if (header_len) do {
+	do {
 		int value_len = 0;
+		
 		switch (*line++)
 		{
 			case ':':
@@ -403,6 +395,8 @@ PHP_HTTP_API STATUS _http_parse_headers_ex(const char *header, HashTable *header
 							}
 							efree(key);
 						}
+					} else {
+						return FAILURE;
 					}
 					colon = NULL;
 					value_len = 0;
@@ -410,7 +404,7 @@ PHP_HTTP_API STATUS _http_parse_headers_ex(const char *header, HashTable *header
 				}
 			break;
 		}
-	} while (header_len > (size_t) (line - begin));
+	} while (*(line-1) && !(*(line-1) == '\n' && (*line == '\n' || *line == '\r')));
 
 	return SUCCESS;
 }
diff --git a/http_info_api.c b/http_info_api.c
index 5140b6c..ec238fb 100644
--- a/http_info_api.c
+++ b/http_info_api.c
@@ -75,7 +75,7 @@ PHP_HTTP_API STATUS _http_info_parse_ex(const char *pre_header, http_info *info,
 	/* there must be HTTP/1.x in the line
 	 * and nothing than SPACE or NUL after HTTP/1.x 
 	 */
-	if (	(!(http = strstr(pre_header, "HTTP/1."))) || 
+	if (	(!(http = php_memnstr((char *) pre_header, "HTTP/1.", lenof("HTTP/1."), (char *)end))) || 
 			(!(http < end)) ||
 			(!isdigit(http[lenof("HTTP/1.")])) ||
 			(http[lenof("HTTP/1.1")] && (!isspace(http[lenof("HTTP/1.1")])))) {
diff --git a/package2.xml b/package2.xml
index 425433f..84a78d8 100644
--- a/package2.xml
+++ b/package2.xml
@@ -46,6 +46,8 @@ HttpResponse
  </stability>
  <license>BSD, revised</license>
  <notes><![CDATA[
+- Improved performance of the message and header parser
+* Fixed internal http_parse_headers() always returning success
 * Fixed missing "parentMessage" entry in print_r($HttpMessageObject)
 ]]></notes>
  <contents>
diff --git a/php_http_api.h b/php_http_api.h
index 573b2a4..f7d7db1 100644
--- a/php_http_api.h
+++ b/php_http_api.h
@@ -122,16 +122,21 @@ PHP_HTTP_API php_stream *_http_get_request_body_stream(TSRMLS_D);
 #define http_locate_body _http_locate_body
 static inline const char *_http_locate_body(const char *message)
 {
-	const char *cr = strstr(message, "\r\n\r\n");
-	const char *lf = strstr(message, "\n\n");
-
-	if (lf && cr) {
-		return MIN(lf + 2, cr + 4);
-	} else if (lf || cr) {
-		return MAX(lf + 2, cr + 4);
-	} else {
-		return NULL;
+	const char *body = NULL, *msg = message;
+	
+	while (*msg) {
+		if (*msg == '\n') {
+			if (*(msg+1) == '\n') {
+				body = msg + 2;
+				break;
+			} else if (*(msg+1) == '\r' && *(msg+2) == '\n' && msg != message && *(msg-1) == '\r') {
+				body = msg + 3;
+				break;
+			}
+		}
+		++msg;
 	}
+	return body;
 }
 
 #define http_locate_eol _http_locate_eol
-- 
2.30.2