From d67af7f8dc8100a72ce2d5706c7d2f8d0d89796f Mon Sep 17 00:00:00 2001
From: Michael Wallner <mike@php.net>
Date: Tue, 17 Feb 2015 15:08:50 +0100
Subject: [PATCH] don't generate stat based etags for temp/mem streams

---
 php_http_message_body.c   | 28 ++++++++++++++++------------
 tests/envresponse018.phpt | 33 +++++++++++++++++++++++++++++++++
 2 files changed, 49 insertions(+), 12 deletions(-)
 create mode 100644 tests/envresponse018.phpt

diff --git a/php_http_message_body.c b/php_http_message_body.c
index 6129caf..ab1ec29 100644
--- a/php_http_message_body.c
+++ b/php_http_message_body.c
@@ -128,25 +128,29 @@ const char *php_http_message_body_boundary(php_http_message_body_t *body)
 
 char *php_http_message_body_etag(php_http_message_body_t *body)
 {
-	const php_stream_statbuf *ssb = php_http_message_body_stat(body);
+	php_http_etag_t *etag;
+	php_stream *s = php_http_message_body_stream(body);
 	TSRMLS_FETCH_FROM_CTX(body->ts);
 
 	/* real file or temp buffer ? */
-	if (ssb && ssb->sb.st_mtime) {
-		char *etag;
+	if (s->ops != &php_stream_temp_ops && s->ops != &php_stream_memory_ops) {
+		php_stream_stat(php_http_message_body_stream(body), &body->ssb);
 
-		spprintf(&etag, 0, "%lx-%lx-%lx", ssb->sb.st_ino, ssb->sb.st_mtime, ssb->sb.st_size);
-		return etag;
-	} else {
-		php_http_etag_t *etag = php_http_etag_init(PHP_HTTP_G->env.etag_mode TSRMLS_CC);
+		if (body->ssb.sb.st_mtime) {
+			char *etag;
 
-		if (etag) {
-			php_http_message_body_to_callback(body, (php_http_pass_callback_t) php_http_etag_update, etag, 0, 0);
-			return php_http_etag_finish(etag);
-		} else {
-			return NULL;
+			spprintf(&etag, 0, "%lx-%lx-%lx", body->ssb.sb.st_ino, body->ssb.sb.st_mtime, body->ssb.sb.st_size);
+			return etag;
 		}
 	}
+
+	/* content based */
+	if ((etag = php_http_etag_init(PHP_HTTP_G->env.etag_mode TSRMLS_CC))) {
+		php_http_message_body_to_callback(body, (php_http_pass_callback_t) php_http_etag_update, etag, 0, 0);
+		return php_http_etag_finish(etag);
+	}
+
+	return NULL;
 }
 
 void php_http_message_body_to_string(php_http_message_body_t *body, char **buf, size_t *len, off_t offset, size_t forlen)
diff --git a/tests/envresponse018.phpt b/tests/envresponse018.phpt
new file mode 100644
index 0000000..bed8526
--- /dev/null
+++ b/tests/envresponse018.phpt
@@ -0,0 +1,33 @@
+--TEST--
+env response don't generate stat based etag for temp stream
+--SKIPIF--
+<?php 
+include "skipif.inc";
+?>
+--FILE--
+<?php 
+echo "Test\n";
+
+$b = new http\Message\Body(fopen("php://temp/maxmemory:8", "r+"));
+$b->append("1234567890\n");
+
+$r = new http\Env\Response;
+$r->setBody($b);
+$r->send(STDOUT);
+
+?>
+===DONE===
+--EXPECTF--
+Test
+HTTP/1.1 200 OK
+Accept-Ranges: bytes
+ETag: "%x"
+Last-Modified: %s
+Transfer-Encoding: chunked
+
+b
+1234567890
+
+0
+
+===DONE===
-- 
2.30.2