From ee21a57095f838337945bd3d2e19bd20bdfee3ea Mon Sep 17 00:00:00 2001
From: Michael Wallner <mike@php.net>
Date: Wed, 27 Jul 2016 14:47:05 +0200
Subject: [PATCH] fix #46 (HTTP/2 response message parsing broken with libcurl
 >= 7.49.1)

---
 src/php_http_info.c    | 28 ++++++++++++++++++++--------
 src/php_http_version.c | 23 +++++++++++++++++------
 tests/client022.phpt   |  6 ++++--
 3 files changed, 41 insertions(+), 16 deletions(-)

diff --git a/src/php_http_info.c b/src/php_http_info.c
index 4fb067f..8008215 100644
--- a/src/php_http_info.c
+++ b/src/php_http_info.c
@@ -51,7 +51,7 @@ void php_http_info_free(php_http_info_t **i)
 
 php_http_info_t *php_http_info_parse(php_http_info_t *info, const char *pre_header TSRMLS_DC)
 {
-	const char *end, *http;
+	const char *end, *http, *off;
 	zend_bool free_info = !info;
 	
 	/* sane parameter */
@@ -71,9 +71,21 @@ php_http_info_t *php_http_info_parse(php_http_info_t *info, const char *pre_head
 	
 	info = php_http_info_init(info TSRMLS_CC);
 
-	/* and nothing than SPACE or NUL after HTTP/X.x */
-	if (!php_http_version_parse(&info->http.version, http TSRMLS_CC)
-	||	(http[lenof("HTTP/X.x")] && (!PHP_HTTP_IS_CTYPE(space, http[lenof("HTTP/X.x")])))) {
+	if (!php_http_version_parse(&info->http.version, http TSRMLS_CC)) {
+		if (free_info) {
+			php_http_info_free(&info);
+		}
+		return NULL;
+	}
+
+	/* clumsy fix for changed libcurl behaviour in 7.49.1, see https://github.com/curl/curl/issues/888 */
+	off = &http[lenof("HTTP/X")];
+	if (info->http.version.major < 2) {
+		off += 2;
+	}
+
+	/* and nothing than SPACE or NUL after HTTP/X(.x) */
+	if (*off && (!PHP_HTTP_IS_CTYPE(space, *off))) {
 		if (free_info) {
 			php_http_info_free(&info);
 		}
@@ -90,11 +102,11 @@ php_http_info_t *php_http_info_parse(php_http_info_t *info, const char *pre_head
 
 	/* is response */
 	if (pre_header == http) {
-		const char *status = NULL, *code = http + sizeof("HTTP/X.x");
+		const char *status = NULL, *code = off;
 		
 		info->type = PHP_HTTP_RESPONSE;
 		while (' ' == *code) ++code;
-		if (code && end > code) {
+		if (end > code) {
 			/* 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');
@@ -120,7 +132,7 @@ php_http_info_t *php_http_info_parse(php_http_info_t *info, const char *pre_head
 	}
 	
 	/* is request */
-	else if (*(http - 1) == ' ' && (!http[lenof("HTTP/X.x")] || http[lenof("HTTP/X.x")] == '\r' || http[lenof("HTTP/X.x")] == '\n')) {
+	else if (*(http - 1) == ' ' && (!*off || *off == '\r' || *off == '\n')) {
 		const char *url = strchr(pre_header, ' ');
 		
 		info->type = PHP_HTTP_REQUEST;
@@ -155,7 +167,7 @@ php_http_info_t *php_http_info_parse(php_http_info_t *info, const char *pre_head
 		return info;
 	}
 
-	/* some darn header containing HTTP/X.x */
+	/* some darn header containing HTTP/X(.x) */
 	else {
 		if (free_info) {
 			php_http_info_free(&info);
diff --git a/src/php_http_version.c b/src/php_http_version.c
index 7adef9d..c861a64 100644
--- a/src/php_http_version.c
+++ b/src/php_http_version.c
@@ -44,18 +44,29 @@ php_http_version_t *php_http_version_parse(php_http_version_t *v, const char *st
 		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 - 2);
-				}
+			switch (separator) {
+			default:
+				php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Non-standard version separator '%c' in HTTP protocol version '%s'", separator, ptr - 2);
+				/* no break */
+			case '.':
+			case ',':
 				minor = *ptr - '0';
-				if (minor >= 0 && minor <= 9) {
-					return php_http_version_init(v, major, minor TSRMLS_CC);
+				break;
+
+			case ' ':
+				if (major > 1) {
+					minor = 0;
+				} else {
+					goto error;
 				}
 			}
+			if (minor >= 0 && minor <= 9) {
+				return php_http_version_init(v, major, minor TSRMLS_CC);
+			}
 		}
 	}
 
+	error:
 	php_error_docref(NULL TSRMLS_CC, E_WARNING, "Could not parse HTTP protocol version '%s'", str);
 	return NULL;
 }
diff --git a/tests/client022.phpt b/tests/client022.phpt
index e3f7f11..a59971c 100644
--- a/tests/client022.phpt
+++ b/tests/client022.phpt
@@ -18,10 +18,12 @@ nghttpd(function($port) {
 	$client->setOptions([
 		"protocol" => http\Client\Curl\HTTP_VERSION_2_0,
 		"ssl" => [
-			"cafile" => __DIR__."/helper/http2.crt",
+			"cainfo" => __DIR__."/helper/http2.crt",
 		]
 	]);
-	$client->enqueue(new http\Client\Request("GET", "https://localhost:$port"));
+	
+	$request = new http\Client\Request("GET", "https://localhost:$port");
+	$client->enqueue($request);
 	echo $client->send()->getResponse();
 });
 
-- 
2.30.2