From: Michael Wallner <mike@php.net>
Date: Fri, 6 Feb 2015 11:13:19 +0000 (+0100)
Subject: reduce cost of parsing http start line
X-Git-Tag: RELEASE_2_3_0_RC1~51
X-Git-Url: https://git.m6w6.name/?p=m6w6%2Fext-http;a=commitdiff_plain;h=401e7e3f740efedb5e543948fe89e1c2dfad47c5

reduce cost of parsing http start line
---

diff --git a/php_http_info.c b/php_http_info.c
index 876c720..9050919 100644
--- a/php_http_info.c
+++ b/php_http_info.c
@@ -90,13 +90,22 @@ php_http_info_t *php_http_info_parse(php_http_info_t *info, const char *pre_head
 
 	/* is response */
 	if (pre_header == http) {
-		char *status = NULL;
-		const char *code = http + sizeof("HTTP/X.x");
+		const char *status = NULL, *code = http + sizeof("HTTP/X.x");
 		
 		info->type = PHP_HTTP_RESPONSE;
 		while (' ' == *code) ++code;
 		if (code && end > code) {
-			PHP_HTTP_INFO(info).response.code = strtol(code, &status, 10);
+			/* rfc7230#3.1.2 The status-code element is a 3-digit integer code */
+			PHP_HTTP_INFO(info).response.code = 100*(*code++ - '0');
+			PHP_HTTP_INFO(info).response.code += 10*(*code++ - '0');
+			PHP_HTTP_INFO(info).response.code +=     *code++ - '0';
+			if (PHP_HTTP_INFO(info).response.code < 100 || PHP_HTTP_INFO(info).response.code > 599) {
+				if (free_info) {
+					php_http_info_free(&info);
+				}
+				return NULL;
+			}
+			status = code;
 		} else {
 			PHP_HTTP_INFO(info).response.code = 0;
 		}
diff --git a/php_http_version.c b/php_http_version.c
index f4fcfc8..7adef9d 100644
--- a/php_http_version.c
+++ b/php_http_version.c
@@ -27,7 +27,7 @@ php_http_version_t *php_http_version_init(php_http_version_t *v, unsigned major,
 php_http_version_t *php_http_version_parse(php_http_version_t *v, const char *str TSRMLS_DC)
 {
 	long major, minor;
-	char separator = 0, *stop = NULL;
+	char separator = 0;
 	register const char *ptr = str;
 
 	switch (*ptr) {
@@ -40,16 +40,16 @@ php_http_version_t *php_http_version_parse(php_http_version_t *v, const char *st
 		++ptr;
 		/* no break */
 	default:
-		major = strtol(ptr, &stop, 10);
-		if (stop && stop != ptr && major != LONG_MIN && major != LONG_MAX) {
-			separator = *stop;
+		/* rfc7230#2.6 The HTTP version number consists of two decimal digits separated by a "." (period or decimal point) */
+		major = *ptr++ - '0';
+		if (major >= 0 && major <= 9) {
+			separator = *ptr++;
 			if (separator) {
 				if (separator != '.' && separator != ',') {
-					php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Non-standard version separator '%c' in HTTP protocol version '%s'", separator, ptr);
+					php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Non-standard version separator '%c' in HTTP protocol version '%s'", separator, ptr - 2);
 				}
-				ptr = stop + 1;
-				minor = strtol(ptr, &stop, 10);
-				if (minor != LONG_MIN && minor != LONG_MAX) {
+				minor = *ptr - '0';
+				if (minor >= 0 && minor <= 9) {
 					return php_http_version_init(v, major, minor TSRMLS_CC);
 				}
 			}