consistently use FileHelper.openInputStreamSafe to resolve input streams

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/keyimport/processing/ImportKeysListLoader.java

@@ -141,7 +141,7 @@ public class ImportKeysListLoader
         if (ls.mKeyBytes != null) {
             inputData = new InputData(new ByteArrayInputStream(ls.mKeyBytes), ls.mKeyBytes.length);
         } else if (ls.mDataUri != null) {
-            InputStream inputStream = mContext.getContentResolver().openInputStream(ls.mDataUri);
+            InputStream inputStream = FileHelper.openInputStreamSafe(mContext.getContentResolver(), ls.mDataUri);
             long length = FileHelper.getFileSize(mContext, ls.mDataUri, -1);
 
             inputData = new InputData(inputStream, length);

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/operations/BackupOperation.java

@@ -57,6 +57,7 @@ import org.sufficientlysecure.keychain.service.BackupKeyringParcel;
 import org.sufficientlysecure.keychain.service.input.CryptoInputParcel;
 import org.sufficientlysecure.keychain.ui.util.KeyFormattingUtils;
 import org.sufficientlysecure.keychain.util.CountingOutputStream;
+import org.sufficientlysecure.keychain.util.FileHelper;
 import org.sufficientlysecure.keychain.util.InputData;
 import org.sufficientlysecure.keychain.util.Numeric9x4PassphraseUtil;
 import org.sufficientlysecure.keychain.util.Passphrase;
@@ -175,7 +176,7 @@ public class BackupOperation extends BaseOperation<BackupKeyringParcel> {
         }
         PgpSignEncryptData pgpSignEncryptData = builder.build();
 
-        InputStream inStream = mContext.getContentResolver().openInputStream(plainUri);
+        InputStream inStream = FileHelper.openInputStreamSafe(mContext.getContentResolver(), plainUri);
 
         String filename;
         long[] masterKeyIds = backupInput.getMasterKeyIds();

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/operations/InputDataOperation.java

@@ -55,6 +55,7 @@ import org.sufficientlysecure.keychain.provider.TemporaryFileProvider;
 import org.sufficientlysecure.keychain.service.InputDataParcel;
 import org.sufficientlysecure.keychain.service.input.CryptoInputParcel;
 import org.sufficientlysecure.keychain.util.CharsetVerifier;
+import org.sufficientlysecure.keychain.util.FileHelper;
 
 
 /** This operation deals with input data, trying to determine its type as it goes.
@@ -381,7 +382,7 @@ public class InputDataOperation extends BaseOperation<InputDataParcel> {
             try {
 
                 // open current uri for input
-                InputStream in = mContext.getContentResolver().openInputStream(currentInputUri);
+                InputStream in = FileHelper.openInputStreamSafe(mContext.getContentResolver(), currentInputUri);
                 parser.parse(in);
 
                 if (mSignedDataUri != null) {
@@ -394,7 +395,7 @@ public class InputDataOperation extends BaseOperation<InputDataParcel> {
 
                     // the actual content is the signed data now (and will be passed verbatim, if parsing fails)
                     currentInputUri = mSignedDataUri;
-                    in = mContext.getContentResolver().openInputStream(currentInputUri);
+                    in = FileHelper.openInputStreamSafe(mContext.getContentResolver(), currentInputUri);
                     // reset signed data result, to indicate to the parser that it is in the inner part
                     mSignedDataResult = null;
                     parser.parse(in);

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpDecryptVerifyOperation.java

@@ -109,7 +109,7 @@ public class PgpDecryptVerifyOperation extends BaseOperation<PgpDecryptVerifyInp
             inputData = new InputData(new ByteArrayInputStream(inputBytes), inputBytes.length);
         } else {
             try {
-                InputStream inputStream = mContext.getContentResolver().openInputStream(input.getInputUri());
+                InputStream inputStream = FileHelper.openInputStreamSafe(mContext.getContentResolver(), input.getInputUri());
                 long inputSize = FileHelper.getFileSize(mContext, input.getInputUri(), 0);
                 inputData = new InputData(inputStream, inputSize);
             } catch (SecurityException e) {

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/SettingsSmartPGPAuthorityFragment.java

@@ -41,6 +41,7 @@ import org.sufficientlysecure.keychain.ui.util.recyclerview.ItemTouchHelperAdapt
 import org.sufficientlysecure.keychain.ui.util.recyclerview.ItemTouchHelperDragCallback;
 import org.sufficientlysecure.keychain.ui.util.recyclerview.ItemTouchHelperViewHolder;
 import org.sufficientlysecure.keychain.ui.util.recyclerview.RecyclerItemClickListener;
+import org.sufficientlysecure.keychain.util.FileHelper;
 
 import java.io.IOException;
 import java.io.InputStream;
@@ -205,7 +206,7 @@ public class SettingsSmartPGPAuthorityFragment extends Fragment implements Recyc
             if (uri == null) {
                 new_cert = old_cert;
             } else {
-                final InputStream fis = getContext().getContentResolver().openInputStream(Uri.parse(uri));
+                final InputStream fis = FileHelper.openInputStreamSafe(getContext().getContentResolver(), Uri.parse(uri));
 
                 final CertificateFactory cf = CertificateFactory.getInstance("X.509");
                 new_cert = cf.generateCertificate(fis);

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/token/PublicKeyRetriever.java

@@ -47,6 +47,7 @@ import org.sufficientlysecure.keychain.pgp.UncachedKeyRing.IteratorWithIOThrow;
 import org.sufficientlysecure.keychain.pgp.exception.PgpGeneralException;
 import org.sufficientlysecure.keychain.securitytoken.SecurityTokenInfo;
 import org.sufficientlysecure.keychain.ui.util.KeyFormattingUtils;
+import org.sufficientlysecure.keychain.util.FileHelper;
 import org.sufficientlysecure.keychain.util.ParcelableProxy;
 import org.sufficientlysecure.keychain.util.Preferences;
 import timber.log.Timber;
@@ -206,7 +207,7 @@ public class PublicKeyRetriever {
             log.add(LogType.MSG_RET_CURI_START, 0);
 
             log.add(LogType.MSG_RET_CURI_OPEN, 1, uri.toString());
-            InputStream is = context.getContentResolver().openInputStream(uri);
+            InputStream is = FileHelper.openInputStreamSafe(context.getContentResolver(), uri);
             if (is == null) {
                 log.add(LogType.MSG_RET_CURI_ERROR_NOT_FOUND, 1);
                 return KeyRetrievalResult.createWithError(log);

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/FileHelper.java

@@ -49,9 +49,9 @@ import android.os.Build.VERSION_CODES;
 import android.os.Environment;
 import android.provider.DocumentsContract;
 import android.provider.OpenableColumns;
-import androidx.fragment.app.Fragment;
 import android.widget.Toast;
 
+import androidx.fragment.app.Fragment;
 import org.sufficientlysecure.keychain.R;
 import timber.log.Timber;
 
@@ -232,7 +232,7 @@ public class FileHelper {
 
         BufferedReader br = null;
         try {
-            InputStream is = context.getContentResolver().openInputStream(uri);
+            InputStream is = FileHelper.openInputStreamSafe(context.getContentResolver(), uri);
             br = new BufferedReader(new InputStreamReader(is));
 
             String header = "-----BEGIN PGP MESSAGE-----";
@@ -264,7 +264,7 @@ public class FileHelper {
 
         byte[] decryptedMessage;
         {
-            InputStream in = context.getContentResolver().openInputStream(outputUri);
+            InputStream in = FileHelper.openInputStreamSafe(context.getContentResolver(), outputUri);
             ByteArrayOutputStream out = new ByteArrayOutputStream();
             byte[] buf = new byte[256];
             int read;
@@ -298,7 +298,7 @@ public class FileHelper {
 
         try {
             ContentResolver resolver = context.getContentResolver();
-            bis = new BufferedInputStream(resolver.openInputStream(fromUri));
+            bis = new BufferedInputStream(FileHelper.openInputStreamSafe(resolver, fromUri));
             bos = new BufferedOutputStream(resolver.openOutputStream(toUri));
             byte[] buf = new byte[1024];
             int len;

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/FileHelperLollipop.java

@@ -23,7 +23,6 @@ import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.InputStream;
 
-import android.annotation.TargetApi;
 import android.content.ContentResolver;
 import android.content.res.AssetFileDescriptor;
 import android.net.Uri;
@@ -33,6 +32,7 @@ import android.system.ErrnoException;
 import android.system.Os;
 import android.system.StructStat;
 
+import androidx.annotation.RequiresApi;
 import timber.log.Timber;
 
 
@@ -43,7 +43,7 @@ import timber.log.Timber;
  * lollipop-only class. All methods here should only be called by FileHelper,
  * and consequently have package visibility.
  */
-@TargetApi(VERSION_CODES.LOLLIPOP)
+@RequiresApi(VERSION_CODES.LOLLIPOP)
 class FileHelperLollipop {
 
     /**
@@ -73,7 +73,7 @@ class FileHelperLollipop {
                     throw new FileNotFoundException("Unable to create stream");
                 }
             } catch (ErrnoException e) {
-                Timber.e("fstat() failed: " + e);
+                Timber.e(e, "fstat() failed");
                 throw new FileNotFoundException("fstat() failed");
             }