From f5c8d17227521f7bcb01c2ff53362556500c8f5b Mon Sep 17 00:00:00 2001
From: AlphaBs <ksi123456ab@naver.com>
Date: Mon, 20 Sep 2021 01:09:37 +0900
Subject: [PATCH] fix JavaChecker does not work in offline mode

---
 CmlLib/Core/Files/JavaChecker.cs | 52 ++++++++++++++++++++------------
 1 file changed, 32 insertions(+), 20 deletions(-)

diff --git a/CmlLib/Core/Files/JavaChecker.cs b/CmlLib/Core/Files/JavaChecker.cs
index 2fb2e49..331ee1c 100644
--- a/CmlLib/Core/Files/JavaChecker.cs
+++ b/CmlLib/Core/Files/JavaChecker.cs
@@ -71,7 +71,11 @@ private DownloadFile[] internalCheckFile(string javaVersion, MinecraftPath path,
             catch (Exception e)
             {
                 Debug.WriteLine(e);
-                return legacyJavaChecker(path, out binPath);
+
+                if (string.IsNullOrEmpty(binPath))
+                    return legacyJavaChecker(path, out binPath);
+                else
+                    return new DownloadFile[] { };
             }
         }
 
@@ -205,32 +209,40 @@ private DownloadFile[] legacyJavaChecker(MinecraftPath path, out string binPath)
             MJava mJava = new MJava(legacyJavaPath);
             binPath = mJava.GetBinaryPath();
             
-            if (mJava.CheckJavaExistence())
-                return new DownloadFile[] {};
+            try
+            {
+                if (mJava.CheckJavaExistence())
+                    return new DownloadFile[] {};
 
-            string javaUrl = mJava.GetJavaUrl(); 
-            string lzmaPath = Path.Combine(Path.GetTempPath(), "jre.lzma");
-            string zipPath = Path.Combine(Path.GetTempPath(), "jre.zip");
+                string javaUrl = mJava.GetJavaUrl(); 
+                string lzmaPath = Path.Combine(Path.GetTempPath(), "jre.lzma");
+                string zipPath = Path.Combine(Path.GetTempPath(), "jre.zip");
                             
-            DownloadFile file = new DownloadFile(lzmaPath, javaUrl)
-            {
-                Name = "jre.lzma",
-                Type = MFile.Runtime,
-                AfterDownload = new Func<Task>[]
+                DownloadFile file = new DownloadFile(lzmaPath, javaUrl)
                 {
-                    () => Task.Run(() =>
+                    Name = "jre.lzma",
+                    Type = MFile.Runtime,
+                    AfterDownload = new Func<Task>[]
                     {
-                        SevenZipWrapper.DecompressFileLZMA(lzmaPath, zipPath);
+                        () => Task.Run(() =>
+                        {
+                            SevenZipWrapper.DecompressFileLZMA(lzmaPath, zipPath);
 
-                        var z = new SharpZip(zipPath);
-                        z.Unzip(legacyJavaPath);
+                            var z = new SharpZip(zipPath);
+                            z.Unzip(legacyJavaPath);
 
-                        tryChmod755(mJava.GetBinaryPath());
-                    })
-                }
-            };
+                            tryChmod755(mJava.GetBinaryPath());
+                        })
+                    }
+                };
 
-            return new[] {file};
+                return new[] {file};
+            }
+            catch (Exception e)
+            {
+                Debug.WriteLine(e);
+                return new DownloadFile[] {};
+            }
         }
 
         private void tryChmod755(string path)