From 0f07abc80d7e1e86de28ea13d939054cebd69e7c Mon Sep 17 00:00:00 2001
From: Robert Nagy <ronagy@icloud.com>
Date: Mon, 11 Jul 2022 12:25:05 +0200
Subject: [PATCH] stream: finish pipeline if dst closes before src

If the destination stream is closed before the source has completed
the pipeline should finnish with premature close.

Fixes: https://github.com/nodejs/node/issues/43682

PR-URL: https://github.com/nodejs/node/pull/43701
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
---
 lib/internal/streams/pipeline.js             | 14 ++++++++++++-
 test/parallel/test-stream-pipeline-duplex.js | 21 ++++++++++++++++++++
 2 files changed, 34 insertions(+), 1 deletion(-)
 create mode 100644 test/parallel/test-stream-pipeline-duplex.js

diff --git a/lib/internal/streams/pipeline.js b/lib/internal/streams/pipeline.js
index a3f69c2099ace1..77520a14d50a6f 100644
--- a/lib/internal/streams/pipeline.js
+++ b/lib/internal/streams/pipeline.js
@@ -20,6 +20,7 @@ const {
     ERR_INVALID_RETURN_VALUE,
     ERR_MISSING_ARGS,
     ERR_STREAM_DESTROYED,
+    ERR_STREAM_PREMATURE_CLOSE,
   },
   AbortError,
 } = require('internal/errors');
@@ -344,13 +345,24 @@ function pipelineImpl(streams, callback, opts) {
 }
 
 function pipe(src, dst, finish, { end }) {
+  let ended = false;
+  dst.on('close', () => {
+    if (!ended) {
+      // Finish if the destination closes before the source has completed.
+      finish(new ERR_STREAM_PREMATURE_CLOSE());
+    }
+  });
+
   src.pipe(dst, { end });
 
   if (end) {
     // Compat. Before node v10.12.0 stdio used to throw an error so
     // pipe() did/does not end() stdio destinations.
     // Now they allow it but "secretly" don't close the underlying fd.
-    src.once('end', () => dst.end());
+    src.once('end', () => {
+      ended = true;
+      dst.end();
+    });
   } else {
     finish();
   }
diff --git a/test/parallel/test-stream-pipeline-duplex.js b/test/parallel/test-stream-pipeline-duplex.js
new file mode 100644
index 00000000000000..0dbd27a7174dc9
--- /dev/null
+++ b/test/parallel/test-stream-pipeline-duplex.js
@@ -0,0 +1,21 @@
+'use strict';
+
+const common = require('../common');
+const { pipeline, Duplex, PassThrough } = require('stream');
+const assert = require('assert');
+
+const remote = new PassThrough();
+const local = new Duplex({
+  read() {},
+  write(chunk, enc, callback) {
+    callback();
+  }
+});
+
+pipeline(remote, local, remote, common.mustCall((err) => {
+  assert.strictEqual(err.code, 'ERR_STREAM_PREMATURE_CLOSE');
+}));
+
+setImmediate(() => {
+  remote.end();
+});