From eaddfa7fd1bcbe03cc6c4c757f91af1040f876fa Mon Sep 17 00:00:00 2001
From: fiaxh <github@lightrise.org>
Date: Tue, 15 Mar 2016 11:09:28 +0100
Subject: [PATCH] Check if path for URI is accessible The path extracted from
 the Cursor might not be accessible for Conversations. FileUtils accesses URI
 information through the ContentProvider, so this wouldn't be noticed. Fixes
 sharing from open-keychain's TemporaryContentProvider

---
 .../java/eu/siacs/conversations/utils/FileUtils.java  | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/main/java/eu/siacs/conversations/utils/FileUtils.java b/src/main/java/eu/siacs/conversations/utils/FileUtils.java
index ad8b8640f..6e75d41cd 100644
--- a/src/main/java/eu/siacs/conversations/utils/FileUtils.java
+++ b/src/main/java/eu/siacs/conversations/utils/FileUtils.java
@@ -10,6 +10,8 @@ import android.os.Environment;
 import android.provider.DocumentsContract;
 import android.provider.MediaStore;
 
+import java.io.File;
+
 public class FileUtils {
 
 	/**
@@ -77,7 +79,14 @@ public class FileUtils {
 		}
 		// MediaStore (and general)
 		else if ("content".equalsIgnoreCase(uri.getScheme())) {
-			return getDataColumn(context, uri, null, null);
+			String path = getDataColumn(context, uri, null, null);
+			if (path != null) {
+				File file = new File(path);
+				if (!file.canRead()) {
+					return null;
+				}
+			}
+			return path;
 		}
 		// File
 		else if ("file".equalsIgnoreCase(uri.getScheme())) {