From 8ad087c40679c200c168f06dddd00b2166194cab Mon Sep 17 00:00:00 2001
From: Him188 <Him188@mamoe.net>
Date: Fri, 7 Feb 2020 12:32:41 +0800
Subject: [PATCH] Add fast-fail size check

---
 .../kotlin/net.mamoe.mirai/utils/ExternalImage.kt           | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/utils/ExternalImage.kt b/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/utils/ExternalImage.kt
index 011346d81..ea89adfb4 100644
--- a/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/utils/ExternalImage.kt
+++ b/mirai-core/src/commonMain/kotlin/net.mamoe.mirai/utils/ExternalImage.kt
@@ -25,9 +25,13 @@ class ExternalImage(
     val md5: ByteArray,
     imageFormat: String,
     val input: Input,
-    val inputSize: Long,
+    val inputSize: Long, // dont be greater than Int.MAX
     val filename: String
 ) {
+    init {
+        check(inputSize in Int.MIN_VALUE.toLong()..Int.MAX_VALUE.toLong()) { "file is too big" }
+    }
+
     companion object {
         operator fun invoke(
             width: Int,