fix: fix build on 32-bit platforms

xen0n · xen0n · commit e12b8bfb0566 · 2025-04-09T14:42:19.000+08:00
This went unnoticed for so many years because obviously everyone was on 64-bit. Fixes: #219
diff --git a/internal/lowlevel/encryptor/mod.go b/internal/lowlevel/encryptor/mod.go
@@ -114,8 +114,8 @@ func (e *WorkwxEncryptor) prepareBufForEncryption(payload *WorkwxPayload) ([]byt
 	}
 
 	buf = buf[:cap(buf)] // grow to full capacity
-	msglen := len(payload.Msg)
-	if msglen < 0 || msglen > math.MaxUint32 {
+	msglen := uint64(len(payload.Msg))
+	if msglen > uint64(math.MaxUint32) {
 		return nil, errPayloadTooBig
 	}
 	binary.BigEndian.PutUint32(buf[16:], uint32(msglen))

Original file line number	Diff line number	Diff line change
`@@ -114,8 +114,8 @@ func (e WorkwxEncryptor) prepareBufForEncryption(payload WorkwxPayload) ([]byt`
`114`	`114`	`}`
`115`	`115`
`116`	`116`	`buf = buf[:cap(buf)] // grow to full capacity`
`117`		`- msglen := len(payload.Msg)`
`118`		`- if msglen < 0 \|\| msglen > math.MaxUint32 {`
	`117`	`+ msglen := uint64(len(payload.Msg))`
	`118`	`+ if msglen > uint64(math.MaxUint32) {`
`119`	`119`	`return nil, errPayloadTooBig`
`120`	`120`	`}`
`121`	`121`	`binary.BigEndian.PutUint32(buf[16:], uint32(msglen))`