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Code Issues Packages Projects Releases Wiki Activity

Do not require write to read from single backup uri.

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This commit is contained in:
Alex Hart
2020-11-09 09:32:21 -04:00
committed by Cody Henthorne
parent d307db8a95
commit 6bf300ada8
2 changed files with 17 additions and 18 deletions
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29
app/src/main/java/org/thoughtcrime/securesms/util/BackupUtil.java
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@@ -6,6 +6,7 @@ import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.os.Build;
import android.text.TextUtils;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
@@ -166,15 +167,13 @@ public class BackupUtil {
}
@RequiresApi(29)
public static @Nullable BackupInfo getBackupInfoForUri(@NonNull Context context, @NonNull Uri uri) {
DocumentFile documentFile = DocumentFile.fromSingleUri(context, uri);
if (documentFile != null && documentFile.exists() && documentFile.canRead() && documentFile.canWrite() && documentFile.getName().endsWith(".backup")) {
long backupTimestamp = getBackupTimestamp(documentFile.getName());
public static @Nullable BackupInfo getBackupInfoFromSingleUri(@NonNull Context context, @NonNull Uri singleUri) {
DocumentFile documentFile = DocumentFile.fromSingleUri(context, singleUri);
if (isBackupFileReadable(documentFile)) {
long backupTimestamp = getBackupTimestamp(Objects.requireNonNull(documentFile.getName()));
return new BackupInfo(backupTimestamp, documentFile.length(), documentFile.getUri());
} else {
logIssueWithDocumentFile(documentFile);
Log.w(TAG, "Could not load backup info.");
return null;
}
@@ -260,17 +259,21 @@ public class BackupUtil {
return -1;
}
private static void logIssueWithDocumentFile(@Nullable DocumentFile documentFile) {
private static boolean isBackupFileReadable(@Nullable DocumentFile documentFile) {
if (documentFile == null) {
throw new AssertionError("We do not support platforms prior to KitKat.");
} else if (!documentFile.exists()) {
Log.w(TAG, "The document at the specified Uri cannot be found.");
Log.w(TAG, "isBackupFileReadable: The document at the specified Uri cannot be found.");
return false;
} else if (!documentFile.canRead()) {
Log.w(TAG, "The document at the specified Uri cannot be read.");
} else if (!documentFile.canWrite()) {
Log.w(TAG, "The document at the specified Uri cannot be written to.");
} else if (!documentFile.getName().endsWith(".backup")) {
Log.w(TAG, "The document at the specified Uri has an unsupported file extension.");
Log.w(TAG, "isBackupFileReadable: The document at the specified Uri cannot be read.");
return false;
} else if (TextUtils.isEmpty(documentFile.getName()) || !documentFile.getName().endsWith(".backup")) {
Log.w(TAG, "isBackupFileReadable: The document at the specified Uri has an unsupported file extension.");
return false;
} else {
Log.i(TAG, "isBackupFileReadable: The document at the specified Uri looks like a readable backup");
return true;
}
}