From 24be8c89cb37b40cbc3ea484747d42d2bf996c15 Mon Sep 17 00:00:00 2001
From: Nat3z <66748576+Nat3z@users.noreply.github.com>
Date: Mon, 2 Mar 2026 19:48:38 -0800
Subject: [PATCH 1/2] fix: fixed blockmap updates

---
 updater/src/main.js | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/updater/src/main.js b/updater/src/main.js
index 35354fe..249ade6 100644
--- a/updater/src/main.js
+++ b/updater/src/main.js
@@ -432,7 +432,7 @@ async function downloadFullRelease(release) {
   mainWindow.webContents.send('text', 'Downloading Update');
   const downloadPath =
     process.platform === 'win32'
-      ? './update.zip'
+      ? path.join(__dirname, 'update.zip')
       : './update/OpenGameInstaller.AppImage';
   if (process.platform === 'linux') {
     fs.mkdirSync('./update', { recursive: true });
@@ -452,16 +452,17 @@ async function downloadFullRelease(release) {
   mainWindow.webContents.send('text', 'Download Complete');
 
   if (process.platform === 'win32') {
-    persistSourceArtifact(assetWithPortable.name, './update.zip');
+    const zipPath = path.join(__dirname, 'update.zip');
+    persistSourceArtifact(assetWithPortable.name, zipPath);
     mainWindow.webContents.send('text', 'Extracting Update');
-    await unzip(`./update.zip`, localCache);
+    await unzip(zipPath, localCache);
     mainWindow.webContents.send('text', 'Copying Update Files');
     copyCacheToUpdate(localCache);
     fs.copyFileSync(
-      './update.zip',
+      zipPath,
       path.join(localCache, assetWithPortable.name)
     );
-    fs.unlinkSync('./update.zip');
+    fs.unlinkSync(zipPath);
   } else {
     const item = path.join(__dirname, 'update', 'OpenGameInstaller.AppImage');
     fs.copyFileSync(item, path.join(localCache, 'OpenGameInstaller.AppImage'));
@@ -605,7 +606,13 @@ async function applyBlockmapPatch(
             `Short read from source artifact at ${matched.offset}: expected ${size}, got ${bytesRead}`
           );
         }
-        fs.writeSync(outFd, buffer, 0, size, writeOffset);
+        const actualChecksum = createHash('sha256').update(buffer).digest('base64').replace(/=+$/, '');
+        const expectedChecksum = (newFile.checksums[i] || '').replace(/=+$/, '');
+        if (actualChecksum !== expectedChecksum) {
+          misses.push({ offset: writeOffset, size });
+        } else {
+          fs.writeSync(outFd, buffer, 0, size, writeOffset);
+        }
       } else {
         misses.push({ offset: writeOffset, size });
       }

From f8656d2fd1955577e3b3c42a1748043018fb0a9b Mon Sep 17 00:00:00 2001
From: Nat3z <66748576+Nat3z@users.noreply.github.com>
Date: Mon, 2 Mar 2026 20:24:50 -0800
Subject: [PATCH 2/2] Update updater/src/main.js

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>
---
 updater/src/main.js | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/updater/src/main.js b/updater/src/main.js
index 249ade6..301fec1 100644
--- a/updater/src/main.js
+++ b/updater/src/main.js
@@ -606,9 +606,20 @@ async function applyBlockmapPatch(
             `Short read from source artifact at ${matched.offset}: expected ${size}, got ${bytesRead}`
           );
         }
-        const actualChecksum = createHash('sha256').update(buffer).digest('base64').replace(/=+$/, '');
-        const expectedChecksum = (newFile.checksums[i] || '').replace(/=+$/, '');
-        if (actualChecksum !== expectedChecksum) {
+        const expectedChecksum = newFile.checksums[i];
+        const digestBytes = createHash('sha256').update(buffer).digest();
+        const actualBase64 = digestBytes.toString('base64');
+        const actualHex = digestBytes.toString('hex');
+        const normalizedExpected =
+          typeof expectedChecksum === 'string'
+            ? expectedChecksum.replace(/=+$/, '')
+            : '';
+        const normalizedBase64 = actualBase64.replace(/=+$/, '');
+        if (
+          expectedChecksum !== actualBase64 &&
+          expectedChecksum !== actualHex &&
+          normalizedExpected !== normalizedBase64
+        ) {
           misses.push({ offset: writeOffset, size });
         } else {
           fs.writeSync(outFd, buffer, 0, size, writeOffset);