Fix memleak when a user filter appends a bucket and returns != PSFS_PASS_ON

Improved tests

ext/standard/tests/filters/filter_errors.inc

@@ -27,7 +27,7 @@ function filter_errors_test($filter, $data) {
 	fwrite($stream, b"$data");
 	fseek($stream, 0, SEEK_SET);
 
-	stream_get_line($stream, 8192, "\r\n");
+	stream_filter_append($stream, $filter);
 	stream_get_contents($stream);
 
 }

ext/standard/tests/filters/filter_errors_convert_base64_decode.phpt

@@ -14,3 +14,5 @@ Warning: stream_filter_append(): stream filter (convert.base64-decode): invalid
 
 Warning: stream_filter_append(): Filter failed to process pre-buffered data in %s
 test filtering of non buffered data
+
+Warning: stream_get_contents(): stream filter (convert.base64-decode): invalid byte sequence in %s

ext/standard/tests/filters/filter_errors_user.phpt

@@ -26,14 +26,18 @@ class test_filter2 extends php_user_filter {
 }
 class test_filter3 extends php_user_filter {
 	function filter($in, $out, &$consumed, $closing) {
+		if (!$closing) {
 			$bucket = stream_bucket_new($this->stream, "42");
 			stream_bucket_append($out, $bucket);
+		}
 		return PSFS_ERR_FATAL;
 	}
 }
 class test_filter4 extends php_user_filter {
 	function filter($in, $out, &$consumed, $closing) {
+		if (!$closing) {
 			$bucket = stream_bucket_new($this->stream, "42");
+		}
 		return PSFS_ERR_FATAL;
 	}
 }
@@ -44,6 +48,43 @@ for($i = 0; $i < 5; ++$i) {
 	filter_errors_test("test_filter$i", "42");
 }
 
+echo "test append / read / remove\n";
+for($i = 0; $i < 5; ++$i) {
+	echo "test_filter$i\n";
+	$stream = fopen('php://memory', 'wb+');
+	fwrite($stream, b"42");
+	fseek($stream, 0, SEEK_SET);
+	$f = stream_filter_append($stream, "test_filter$i");
+	stream_get_contents($stream);
+	stream_filter_remove($f);
+}
+
+echo "test append all / read / remove all\n";
+$stream = fopen('php://memory', 'wb+');
+fwrite($stream, b"42");
+fseek($stream, 0, SEEK_SET);
+$filters = array();
+for($i = 0; $i < 5; ++$i) {
+	echo "test_filter$i\n";
+	$filters[] = stream_filter_append($stream, "test_filter$i");
+}
+stream_get_contents($stream);
+foreach($filters as $filter) {
+	stream_filter_remove($filter);
+}
+
+echo "test append all / read / close\n";
+$stream = fopen('php://memory', 'wb+');
+fwrite($stream, b"42");
+fseek($stream, 0, SEEK_SET);
+$filters = array();
+for($i = 0; $i < 5; ++$i) {
+	echo "test_filter$i\n";
+	$filters[] = stream_filter_append($stream, "test_filter$i");
+}
+stream_get_contents($stream);
+fclose($stream);
+
 ?>
 --EXPECTF--
 test_filter0
@@ -54,6 +95,8 @@ Warning: stream_filter_append(): Unprocessed filter buckets remaining on input b
 
 Warning: stream_filter_append(): Filter failed to process pre-buffered data in %s
 test filtering of non buffered data
+
+Warning: stream_get_contents(): Unprocessed filter buckets remaining on input brigade in %s
 test_filter1
 bool(true)
 test filtering of buffered data
@@ -74,6 +117,8 @@ Warning: stream_filter_append(): Unprocessed filter buckets remaining on input b
 
 Warning: stream_filter_append(): Filter failed to process pre-buffered data in %s
 test filtering of non buffered data
+
+Warning: stream_get_contents(): Unprocessed filter buckets remaining on input brigade in %s
 test_filter4
 bool(true)
 test filtering of buffered data
@@ -82,3 +127,53 @@ Warning: stream_filter_append(): Unprocessed filter buckets remaining on input b
 
 Warning: stream_filter_append(): Filter failed to process pre-buffered data in %s
 test filtering of non buffered data
+
+Warning: stream_get_contents(): Unprocessed filter buckets remaining on input brigade in %s
+test append / read / remove
+test_filter0
+
+Warning: stream_get_contents(): Unprocessed filter buckets remaining on input brigade in %s
+
+Warning: stream_filter_remove(): Unable to flush filter, not removing in %s
+test_filter1
+
+Warning: stream_filter_remove(): Unable to flush filter, not removing in %s
+test_filter2
+
+Warning: stream_filter_remove(): Unable to flush filter, not removing in %s
+test_filter3
+
+Warning: stream_get_contents(): Unprocessed filter buckets remaining on input brigade in %s
+
+Warning: stream_filter_remove(): Unable to flush filter, not removing in %s
+test_filter4
+
+Warning: stream_get_contents(): Unprocessed filter buckets remaining on input brigade in %s
+
+Warning: stream_filter_remove(): Unable to flush filter, not removing in %s
+test append all / read / remove all
+test_filter0
+test_filter1
+test_filter2
+test_filter3
+test_filter4
+
+Warning: stream_get_contents(): Unprocessed filter buckets remaining on input brigade in %s
+
+Warning: stream_filter_remove(): Unable to flush filter, not removing in %s
+
+Warning: stream_filter_remove(): Unable to flush filter, not removing in %s
+
+Warning: stream_filter_remove(): Unable to flush filter, not removing in %s
+
+Warning: stream_filter_remove(): Unable to flush filter, not removing in %s
+
+Warning: stream_filter_remove(): Unable to flush filter, not removing in %s
+test append all / read / close
+test_filter0
+test_filter1
+test_filter2
+test_filter3
+test_filter4
+
+Warning: stream_get_contents(): Unprocessed filter buckets remaining on input brigade in %s

ext/standard/user_filters.c

@@ -245,6 +245,14 @@ php_stream_filter_status_t userfilter_filter( php_stream *stream, php_stream_fil
 			php_stream_bucket_delref(bucket TSRMLS_CC);
 		}
 	}
+	if (ret != PSFS_PASS_ON) {
+		php_stream_bucket *bucket = buckets_out->head;
+		while (bucket != NULL) {
+			php_stream_bucket_unlink(bucket TSRMLS_CC);
+			php_stream_bucket_delref(bucket TSRMLS_CC);
+			bucket = buckets_out->head;
+		}
+	}
 
 	/* filter resources are cleaned up by the stream destructor,
 	 * keeping a reference to the stream resource here would prevent it