From d4e9ec6185694e2247ed6a517e0b688e151e9ee9 Mon Sep 17 00:00:00 2001
From: Philipp Dunkel <pip@pipobscure.com>
Date: Mon, 27 Nov 2023 10:47:11 +0000
Subject: [PATCH 1/2] sea: add ability to embedd auxiliary data asset for use
 with sea

When bundling code into a single executable application sometimes it is
necessary to include non-code assets. While this is possible to do as
base64 encoded blobs in the code itself, adding these assets as a
separate resource makes things a lot smaller.
---
 lib/internal/util.js |  3 +++
 lib/util.js          |  7 +++++++
 src/node_sea.cc      | 37 +++++++++++++++++++++++++++++++++++++
 3 files changed, 47 insertions(+)

diff --git a/lib/internal/util.js b/lib/internal/util.js
index 80ce774a211644..dfa737695faddd 100644
--- a/lib/internal/util.js
+++ b/lib/internal/util.js
@@ -54,6 +54,8 @@ const {
   overrideStackTrace,
 } = require('internal/errors');
 const { signals } = internalBinding('constants').os;
+const { getEmbeddedData } = internalBinding('sea');
+
 const {
   isArrayBufferDetached: _isArrayBufferDetached,
   guessHandleType: _guessHandleType,
@@ -874,6 +876,7 @@ class WeakReference {
 }
 
 module.exports = {
+  getEmbeddedData,
   getLazy,
   assertCrypto,
   cachedResult,
diff --git a/lib/util.js b/lib/util.js
index 9ddb332f866355..a3fc337e15c68b 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -77,6 +77,7 @@ const {
   promisify,
   toUSVString,
   defineLazyProperties,
+  getEmbeddedData
 } = require('internal/util');
 
 let abortController;
@@ -441,3 +442,9 @@ defineLazyProperties(
   'internal/mime',
   ['MIMEType', 'MIMEParams'],
 );
+
+defineLazyProperties(
+  module.exports,
+  'internal/util',
+  ['getEmbeddedData']
+);
diff --git a/src/node_sea.cc b/src/node_sea.cc
index d1ab5051032d76..f388e5005f04e7 100644
--- a/src/node_sea.cc
+++ b/src/node_sea.cc
@@ -257,6 +257,41 @@ void GetCodeCache(const FunctionCallbackInfo<Value>& args) {
   args.GetReturnValue().Set(data_view);
 }
 
+
+#define POSTJECT_SENTINEL_EMBED "NODE_EMBED_fce680ab2cc467b6e072b8b5df1996b2"
+static inline bool hasEmbeddedData() {
+  static const volatile char* sentinel = POSTJECT_SENTINEL_EMBED ":0";
+  return sentinel[sizeof(POSTJECT_SENTINEL_EMBED)] == '1';
+}
+#undef POSTJECT_SENTINEL_EMBED
+void GetEmbeddedData(const FunctionCallbackInfo<Value> &args) {
+  if (!hasEmbeddedData()) {
+    return;
+  }
+
+  Isolate* isolate = args.GetIsolate();
+  size_t size = 0;
+  #ifdef __APPLE__
+    postject_options options;
+    postject_options_init(&options);
+    options.macho_segment_name = "NODE_SEA";
+    const void* data = postject_find_resource("NODE_EMBEDDED_DATA", &size, &options);
+  #else
+    const void* data = postject_find_resource("NODE_EMBEDDED_DATA", &size, nullptr);
+  #endif
+
+   std::shared_ptr<BackingStore> backing_store = ArrayBuffer::NewBackingStore(
+      const_cast<void*>(static_cast<const void*>(data)),
+      size,
+      [](void* /* data */, size_t /* length */, void* /* deleter_data */) {
+        // The code cache data blob is not freed here because it is a static
+        // blob which is not allocated by the BackingStore allocator.
+      },
+      nullptr);
+  Local<ArrayBuffer> array_buffer = ArrayBuffer::New(isolate, backing_store);
+  args.GetReturnValue().Set(array_buffer);
+}
+
 void GetCodePath(const FunctionCallbackInfo<Value>& args) {
   DCHECK(IsSingleExecutable());
 
@@ -558,6 +593,7 @@ void Initialize(Local<Object> target,
             IsExperimentalSeaWarningNeeded);
   SetMethod(context, target, "getCodePath", GetCodePath);
   SetMethod(context, target, "getCodeCache", GetCodeCache);
+  SetMethod(context, target, "getEmbeddedData", GetEmbeddedData);
 }
 
 void RegisterExternalReferences(ExternalReferenceRegistry* registry) {
@@ -565,6 +601,7 @@ void RegisterExternalReferences(ExternalReferenceRegistry* registry) {
   registry->Register(IsExperimentalSeaWarningNeeded);
   registry->Register(GetCodePath);
   registry->Register(GetCodeCache);
+  registry->Register(GetEmbeddedData);
 }
 
 }  // namespace sea

From d8e32a9676da60f588ff117ac9b2ad0d73887041 Mon Sep 17 00:00:00 2001
From: Philipp Dunkel <pip@pipobscure.com>
Date: Mon, 27 Nov 2023 14:32:35 +0000
Subject: [PATCH 2/2] linting/formatting

---
 lib/util.js     |  9 ++-------
 src/node_sea.cc | 23 ++++++++++++-----------
 2 files changed, 14 insertions(+), 18 deletions(-)

diff --git a/lib/util.js b/lib/util.js
index a3fc337e15c68b..f83c6649db179a 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -77,7 +77,7 @@ const {
   promisify,
   toUSVString,
   defineLazyProperties,
-  getEmbeddedData
+  getEmbeddedData,
 } = require('internal/util');
 
 let abortController;
@@ -385,6 +385,7 @@ module.exports = {
   formatWithOptions,
   getSystemErrorMap,
   getSystemErrorName,
+  getEmbeddedData,
   inherits,
   inspect,
   isArray: ArrayIsArray,
@@ -442,9 +443,3 @@ defineLazyProperties(
   'internal/mime',
   ['MIMEType', 'MIMEParams'],
 );
-
-defineLazyProperties(
-  module.exports,
-  'internal/util',
-  ['getEmbeddedData']
-);
diff --git a/src/node_sea.cc b/src/node_sea.cc
index f388e5005f04e7..8efc7c09a20202 100644
--- a/src/node_sea.cc
+++ b/src/node_sea.cc
@@ -257,30 +257,31 @@ void GetCodeCache(const FunctionCallbackInfo<Value>& args) {
   args.GetReturnValue().Set(data_view);
 }
 
-
 #define POSTJECT_SENTINEL_EMBED "NODE_EMBED_fce680ab2cc467b6e072b8b5df1996b2"
 static inline bool hasEmbeddedData() {
   static const volatile char* sentinel = POSTJECT_SENTINEL_EMBED ":0";
   return sentinel[sizeof(POSTJECT_SENTINEL_EMBED)] == '1';
 }
 #undef POSTJECT_SENTINEL_EMBED
-void GetEmbeddedData(const FunctionCallbackInfo<Value> &args) {
+void GetEmbeddedData(const FunctionCallbackInfo<Value>& args) {
   if (!hasEmbeddedData()) {
     return;
   }
 
   Isolate* isolate = args.GetIsolate();
   size_t size = 0;
-  #ifdef __APPLE__
-    postject_options options;
-    postject_options_init(&options);
-    options.macho_segment_name = "NODE_SEA";
-    const void* data = postject_find_resource("NODE_EMBEDDED_DATA", &size, &options);
-  #else
-    const void* data = postject_find_resource("NODE_EMBEDDED_DATA", &size, nullptr);
-  #endif
+#ifdef __APPLE__
+  postject_options options;
+  postject_options_init(&options);
+  options.macho_segment_name = "NODE_SEA";
+  const void* data =
+      postject_find_resource("NODE_EMBEDDED_DATA", &size, &options);
+#else
+  const void* data =
+      postject_find_resource("NODE_EMBEDDED_DATA", &size, nullptr);
+#endif
 
-   std::shared_ptr<BackingStore> backing_store = ArrayBuffer::NewBackingStore(
+  std::shared_ptr<BackingStore> backing_store = ArrayBuffer::NewBackingStore(
       const_cast<void*>(static_cast<const void*>(data)),
       size,
       [](void* /* data */, size_t /* length */, void* /* deleter_data */) {