From 355f5b3dc9ae560827cd274e113f43d09ee9ac49 Mon Sep 17 00:00:00 2001
From: Runxi Yu
Date: Thu, 5 Mar 2026 21:09:07 +0800
Subject: *: Fix overflows

---
 internal/compress/zlib/reader.go | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

(limited to 'internal/compress/zlib/reader.go')

diff --git a/internal/compress/zlib/reader.go b/internal/compress/zlib/reader.go
index a6497dec..f298a07f 100644
--- a/internal/compress/zlib/reader.go
+++ b/internal/compress/zlib/reader.go
@@ -41,6 +41,7 @@ import (
 	"sync"
 
 	"codeberg.org/lindenii/furgit/internal/compress/flate"
+	"codeberg.org/lindenii/furgit/internal/intconv"
 )
 
 const (
@@ -131,7 +132,14 @@ func (z *Reader) Read(p []byte) (int, error) {
 
 	// Finished file; check checksum.
 	readN, err := io.ReadFull(z.r, z.scratch[0:4])
-	z.trailerRead += uint64(readN)
+	readNUint64, convErr := intconv.IntToUint64(readN)
+	if convErr != nil {
+		z.err = convErr
+
+		return n, z.err
+	}
+
+	z.trailerRead += readNUint64
 
 	if err != nil {
 		if errors.Is(err, io.EOF) {
@@ -160,7 +168,12 @@ func (z *Reader) Read(p []byte) (int, error) {
 func (z *Reader) InputConsumed() uint64 {
 	out := z.headerRead + z.trailerRead
 	if z.progress != nil {
-		out += uint64(z.progress.InputConsumed())
+		progressIn, err := intconv.Int64ToUint64(z.progress.InputConsumed())
+		if err != nil {
+			panic(err)
+		}
+
+		out += progressIn
 	}
 
 	return out
-- 
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