content: package top.niunaijun.blackbox.fake.provider;
  
  import android.content.ContentProvider;
  import android.content.ContentValues;
  import android.content.Context;
  import android.content.Intent;
  import android.content.pm.PackageManager;
  import android.content.pm.ProviderInfo;
  import android.content.res.XmlResourceParser;
  import android.database.Cursor;
  import android.database.MatrixCursor;
  import android.net.Uri;
  import android.os.Build;
  import android.os.Environment;
  import android.os.ParcelFileDescriptor;
  import android.provider.OpenableColumns;
  import android.text.TextUtils;
  import android.webkit.MimeTypeMap;
  
  import androidx.core.content.ContextCompat;
  
  import org.xmlpull.v1.XmlPullParserException;
  
  import java.io.File;
  import java.io.FileNotFoundException;
  import java.io.IOException;
  import java.util.HashMap;
  import java.util.Map;
  
  import static org.xmlpull.v1.XmlPullParser.END_DOCUMENT;
  import static org.xmlpull.v1.XmlPullParser.START_TAG;
  
  /**
   * updated by alex5402 on 4/18/21.
   * * ∧＿∧
   * (`･ω･∥
   * 丶　つ０
   * しーＪ
   * TFNQw5HgWUS33Ke1eNmSFTwoQySGU7XNsK (USDT TRC20)
   */
  public class FileProvider extends ContentProvider {
      private static final String[] COLUMNS = {
              OpenableColumns.DISPLAY_NAME, OpenableColumns.SIZE };
  
      private static final String
              META_DATA_FILE_PROVIDER_PATHS = "android.support.FILE_PROVIDER_PATHS";
  
      private static final String TAG_ROOT_PATH = "root-path";
      private static final String TAG_FILES_PATH = "files-path";
      private static final String TAG_CACHE_PATH = "cache-path";
      private static final String TAG_EXTERNAL = "external-path";
      private static final String TAG_EXTERNAL_FILES = "external-files-path";
      private static final String TAG_EXTERNAL_CACHE = "external-cache-path";
      private static final String TAG_EXTERNAL_MEDIA = "external-media-path";
  
      private static final String ATTR_NAME = "name";
      private static final String ATTR_PATH = "path";
  
      private static final File DEVICE_ROOT = new File("/");
  
      private static HashMap<String, PathStrategy> sCache = new HashMap<String, PathStrategy>();
  
      private PathStrategy mStrategy;
  
      /**
       * The default FileProvider implementation does not need to be initialized. If you want to
       * override this method, you must provide your own subclass of 
       */
      @Override
      public boolean onCreate() {
          return true;
      }
  
      /**
       * After the FileProvider is instantiated, this method is called to provide the system with
       * information about the provider.
       *
       * @param context A {@link Context} for the current component.
       * @param info A {@link ProviderInfo} for the new provider.
       */
      @Override
      public void attachInfo(Context context, ProviderInfo info) {
          super.attachInfo(context, info);
  
          // Sanity check our security
          if (info.exported) {
              throw new SecurityException("Provider must not be exported");
          }
          if (!info.grantUriPermissions) {
              throw new SecurityException("Provider must grant uri permissions");
          }
  
          mStrategy = getPathStrategy(context, info.authority);
      }
  
      /**
       * Return a content URI for a given {@link File}. Specific temporary
       * permissions for the content URI can be set with
       * {@link Context#grantUriPermission(String, Uri, int)}, or added
       * to an {@link Intent} by calling {@link Intent#setData(Uri) setData()} and then
       * {@link Intent#setFlags(int) setFlags()}; in both cases, the applicable flags are
       * {@link Intent#FLAG_GRANT_READ_URI_PERMISSION} and
       * {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION}. A FileProvider can only return a
       * <code>content</code> {@link Uri} for file paths defined in their <code>&lt;paths&gt;</code>
       * meta-data element. See the Class Overview for more information.
       *
       * @param context A {@link Context} for the current component.
       * @param authority The authority of a {@link FileProvider} defined in a
       *            {@code <provider>} element in your app's manifest.
       * @param file A {@link File} pointing to the filename for which you want a
       * <code>content</code> {@link Uri}.
       * @return A content URI for the file.
       * @throws IllegalArgumentException When the given {@link File} is outside
       * the paths supported by the provider.
       */
      public static Uri getUriForFile(Context context, String authority,
                                      File file) {
          final PathStrategy strategy = getPathStrategy(context, authority);
          return strategy.getUriForFile(file);
      }
  
      public static File getFileForUri(Context context, String authority,
                                      Uri uri) {
          final PathStrategy strategy = getPathStrategy(context, authority);
          return strategy.getFileForUri(uri);
      }
  
      /**
       * Use a content URI returned by
       * {@link #getUriForFile(Context, String, File) getUriForFile()} to get information about a file
       * managed by the 
       * FileProvider reports the column names defined in {@link android.provider.OpenableColumns}:
       * <ul>
       * <li>{@link android.provider.OpenableColumns#DISPLAY_NAME}</li>
       * <li>{@link android.provider.OpenableColumns#SIZE}</li>
       * </ul>
       * For more information, see
       * {@link ContentProvider#query(Uri, String[], String, String[], String)
       * ContentProvider.query()}.
       *
       * @param uri A content URI returned by {@link #getUriForFile}.
       * @param projection The list of columns to put into the {@link Cursor}. If null all columns are
       * included.
       * @param selection Selection criteria to apply. If null then all data that matches the content
       * URI is returned.
       * @param selectionArgs An array of {@link java.lang.String}, containing arguments to bind to
       * the <i>selection</i> parameter. The <i>query</i> method scans <i>selection</i> from left to
       * right and iterates through <i>selectionArgs</i>, replacing the current "?" character in
       * <i>selection</i> with the value at the current position in <i>selectionArgs</i>. The
       * values are bound to <i>selection</i> as {@link java.lang.String} values.
       * @param sortOrder A {@link java.lang.String} containing the column name(s) on which to sort
       * the resulting {@link Cursor}.
       * @return A {@link Cursor} containing the results of the query.
       *
       */
      @Override
      public Cursor query(Uri uri, String[] projection, String selection,
                          String[] selectionArgs,
                          String sortOrder) {
          // ContentProvider has already checked granted permissions
          final File file = mStrategy.getFileForUri(uri);
  
          if (projection == null) {
              projection = COLUMNS;
          }
  
          String[] cols = new String[projection.length];
          Object[] values = new Object[projection.length];
          int i = 0;
          for (String col : projection) {
              if (OpenableColumns.DISPLAY_NAME.equals(col)) {
                  cols[i] = OpenableColumns.DISPLAY_NAME;
                  values[i++] = file.getName();
              } else if (OpenableColumns.SIZE.equals(col)) {
                  cols[i] = OpenableColumns.SIZE;
                  values[i++] = file.length();
              }
          }
  
          cols = copyOf(cols, i);
          values = copyOf(values, i);
  
          final MatrixCursor cursor = new MatrixCursor(cols, 1);
          cursor.addRow(values);
          return cursor;
      }
  
      /**
       * Returns the MIME type of a content URI returned by
       * {@link #getUriForFile(Context, String, File) getUriForFile()}.
       *
       * @param uri A content URI returned by
       * {@link #getUriForFile(Context, String, File) getUriForFile()}.
       * @return If the associated file has an extension, the MIME type associated with that
       * extension; otherwise <code>application/octet-stream</code>.
       */
      @Override
      public String getType(Uri uri) {
          // ContentProvider has already checked granted permissions
          final File file = mStrategy.getFileForUri(uri);
  
          final int lastDot = file.getName().lastIndexOf('.');
          if (lastDot >= 0) {
              final String extension = file.getName().substring(lastDot + 1);
              final String mime = MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension);
              if (mime != null) {
                  return mime;
              }
          }
  
          return "application/octet-stream";
      }
  
      /**
       * By default, this method throws an {@link java.lang.UnsupportedOperationException}. You must
       * subclass FileProvider if you want to provide different functionality.
       */
      @Override
      public Uri insert(Uri uri, ContentValues values) {
          throw new UnsupportedOperationException("No external inserts");
      }
  
      /**
       * By default, this method throws an {@link java.lang.UnsupportedOperationException}. You must
       * subclass FileProvider if you want to provide different functionality.
       */
      @Override
      public int update(Uri uri, ContentValues values, String selection,
                        String[] selectionArgs) {
          throw new UnsupportedOperationException("No external updates");
      }
  
      /**
       * Deletes the file associated with the specified content URI, as
       * returned by {@link #getUriForFile(Context, String, File) getUriForFile()}. Notice that this
       * method does <b>not</b> throw an {@link java.io.IOException}; you must check its return value.
       *
       * @param uri A content URI for a file, as returned by
       * {@link #getUriForFile(Context, String, File) getUriForFile()}.
       * @param selection Ignored. Set to {@code null}.
       * @param selectionArgs Ignored. Set to {@code null}.
       * @return 1 if the delete succeeds; otherwise, 0.
       */
      @Override
      public int delete(Uri uri, String selection,
                        String[] selectionArgs) {
          // ContentProvider has already checked granted permissions
          final File file = mStrategy.getFileForUri(uri);
          return file.delete() ? 1 : 0;
      }
  
      /**
       * By default, FileProvider automatically returns the
       * {@link ParcelFileDescriptor} for a file associated with a <code>content://</code>
       * {@link Uri}. To get the {@link ParcelFileDescriptor}, call
       * {@link android.content.ContentResolver#openFileDescriptor(Uri, String)
       * ContentResolver.openFileDescriptor}.
       *
       * To override this method, you must provide your own subclass of 
       *
       * @param uri A content URI associated with a file, as returned by
       * {@link #getUriForFile(Context, String, File) getUriForFile()}.
       * @param mode Access mode for the file. May be "r" for read-only access, "rw" for read and
       * write access, or "rwt" for read and write access that truncates any existing file.
       * @return A new {@link ParcelFileDescriptor} with which you can access the file.
       */
      @Override
      public ParcelFileDescriptor openFile(Uri uri, String mode)
              throws FileNotFoundException {
          // ContentProvider has already checked granted permissions
          final File file = mStrategy.getFileForUri(uri);
          final int fileMode = modeToMode(mode);
          return ParcelFileDescriptor.open(file, fileMode);
      }
  
      /**
       * Return {@link PathStrategy} for given authority, either by parsing or
       * returning from cache.
       */
      private static PathStrategy getPathStrategy(Context context, String authority) {
          PathStrategy strat;
          synchronized (sCache) {
              strat = sCache.get(authority);
              if (strat == null) {
                  try {
                      strat = parsePathStrategy(context, authority);
                  } catch (IOException e) {
                      throw new IllegalArgumentException(
                              "Failed to parse " + META_DATA_FILE_PROVIDER_PATHS + " meta-data", e);
                  } catch (XmlPullParserException e) {
                      throw new IllegalArgumentException(
                              "Failed to parse " + META_DATA_FILE_PROVIDER_PATHS + " meta-data", e);
                  }
                  sCache.put(authority, strat);
              }
          }
          return strat;
      }
  
      /**
       * Parse and return {@link PathStrategy} for given authority as defined in
       * {@link #META_DATA_FILE_PROVIDER_PATHS} {@code <meta-data>}.
       *
       * @see #getPathStrategy(Context, String)
       */
      private static PathStrategy parsePathStrategy(Context context, String authority)
              throws IOException, XmlPullParserException {
          final SimplePathStrategy strat = new SimplePathStrategy(authority);
  
          final ProviderInfo info = context.getPackageManager()
                  .resolveContentProvider(authority, PackageManager.GET_META_DATA);
          if (info == null) {
              throw new IllegalArgumentException(
                      "Couldn't find meta-data for provider with authority " + authority);
          }
  
          final XmlResourceParser in = info.loadXmlMetaData(
                  context.getPackageManager(), META_DATA_FILE_PROVIDER_PATHS);
          if (in == null) {
              throw new IllegalArgumentException(
                      "Missing " + META_DATA_FILE_PROVIDER_PATHS + " meta-data");
          }
  
          int type;
          while ((type = in.next()) != END_DOCUMENT) {
              if (type == START_TAG) {
                  final String tag = in.getName();
  
                  final String name = in.getAttributeValue(null, ATTR_NAME);
                  String path = in.getAttributeValue(null, ATTR_PATH);
  
                  File target = null;
                  if (TAG_ROOT_PATH.equals(tag)) {
                      target = DEVICE_ROOT;
                  } else if (TAG_FILES_PATH.equals(tag)) {
                      target = context.getFilesDir();
                  } else if (TAG_CACHE_PATH.equals(tag)) {
                      target = context.getCacheDir();
                  } else if (TAG_EXTERNAL.equals(tag)) {
                      // Use getExternalFilesDir(null) instead of deprecated getExternalStorageDirectory()
                      target = context.getExternalFilesDir(null);
                  } else if (TAG_EXTERNAL_FILES.equals(tag)) {
                      File[] externalFilesDirs = ContextCompat.getExternalFilesDirs(context, null);
                      if (externalFilesDirs.length > 0) {
                          target = externalFilesDirs[0];
                      }
                  } else if (TAG_EXTERNAL_CACHE.equals(tag)) {
                      File[] externalCacheDirs = ContextCompat.getExternalCacheDirs(context);
                      if (externalCacheDirs.length > 0) {
                          target = externalCacheDirs[0];
                      }
                  } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP
                          && TAG_EXTERNAL_MEDIA.equals(tag)) {
                      File[] externalMediaDirs = context.getExternalMediaDirs();
                      if (externalMediaDirs.length > 0) {
                          target = externalMediaDirs[0];
                      }
                  }
  
                  if (target != null) {
                      strat.addRoot(name, buildPath(target, path));
                  }
              }
          }
  
          return strat;
      }
  
      /**
       * Strategy for mapping between {@link File} and {@link Uri}.
       * <p>
       * Strategies must be symmetric so that mapping a {@link File} to a
       * {@link Uri} and then back to a {@link File} points at the original
       * target.
       * <p>
       * Strategies must remain consistent across app launches, and not rely on
       * dynamic state. This ensures that any generated {@link Uri} can still be
       * resolved if your process is killed and later restarted.
       *
       * @see SimplePathStrategy
       */
      interface PathStrategy {
          /**
           * Return a {@link Uri} that represents the given {@link File}.
           */
          Uri getUriForFile(File file);
  
          /**
           * Return a {@link File} that represents the given {@link Uri}.
           */
          File getFileForUri(Uri uri);
      }
  
      /**
       * Strategy that provides access to files living under a narrow whitelist of
       * filesystem roots. It will throw {@link SecurityException} if callers try
       * accessing files outside the configured roots.
       * <p>
       * For example, if configured with
       * {@code addRoot("myfiles", context.getFilesDir())}, then
       * {@code context.getFileStreamPath("foo.txt")} would map to
       * {@code content://myauthority/myfiles/foo.txt}.
       */
      static class SimplePathStrategy implements PathStrategy {
          private final String mAuthority;
          private final HashMap<String, File> mRoots = new HashMap<String, File>();
  
          SimplePathStrategy(String authority) {
              mAuthority = authority;
          }
  
          /**
           * Add a mapping from a name to a filesystem root. The provider only offers
           * access to files that live under configured roots.
           */
          void addRoot(String name, File root) {
              if (TextUtils.isEmpty(name)) {
                  throw new IllegalArgumentException("Name must not be empty");
              }
  
              try {
                  // Resolve to canonical path to keep path checking fast
                  root = root.getCanonicalFile();
              } catch (IOException e) {
                  throw new IllegalArgumentException(
                          "Failed to resolve canonical path for " + root, e);
              }
  
              mRoots.put(name, root);
          }
  
          @Override
          public Uri getUriForFile(File file) {
              String path;
              try {
                  path = file.getCanonicalPath();
              } catch (IOException e) {
                  throw new IllegalArgumentException("Failed to resolve canonical path for " + file);
              }
  
              // Find the most-specific root path
              Map.Entry<String, File> mostSpecific = null;
              for (Map.Entry<String, File> root : mRoots.entrySet()) {
                  final String rootPath = root.getValue().getPath();
                  if (path.startsWith(rootPath) && (mostSpecific == null
                          || rootPath.length() > mostSpecific.getValue().getPath().length())) {
                      mostSpecific = root;
                  }
              }
  
              if (mostSpecific == null) {
                  throw new IllegalArgumentException(
                          "Failed to find configured root that contains " + path);
              }
  
              // Start at first char of path under root
              final String rootPath = mostSpecific.getValue().getPath();
              if (rootPath.endsWith("/")) {
                  path = path.substring(rootPath.length());
              } else {
                  path = path.substring(rootPath.length() + 1);
              }
  
              // Encode the tag and path separately
              path = Uri.encode(mostSpecific.getKey()) + '/' + Uri.encode(path, "/");
              return new Uri.Builder().scheme("content")
                      .authority(mAuthority).encodedPath(path).build();
          }
  
          @Override
          public File getFileForUri(Uri uri) {
              String path = uri.getEncodedPath();
  
              final int splitIndex = path.indexOf('/', 1);
              final String tag = Uri.decode(path.substring(1, splitIndex));
              path = Uri.decode(path.substring(splitIndex + 1));
  
              final File root = mRoots.get(tag);
              if (root == null) {
                  throw new IllegalArgumentException("Unable to find configured root for " + uri);
              }
  
              File file = new File(root, path);
              try {
                  file = file.getCanonicalFile();
              } catch (IOException e) {
                  throw new IllegalArgumentException("Failed to resolve canonical path for " + file);
              }
  
              if (!file.getPath().startsWith(root.getPath())) {
                  throw new SecurityException("Resolved path jumped beyond configured root");
              }
  
              return file;
          }
      }
  
      /**
       * Copied from ContentResolver.java
       */
      private static int modeToMode(String mode) {
          int modeBits;
          if ("r".equals(mode)) {
              modeBits = ParcelFileDescriptor.MODE_READ_ONLY;
          } else if ("w".equals(mode) || "wt".equals(mode)) {
              modeBits = ParcelFileDescriptor.MODE_WRITE_ONLY
                      | ParcelFileDescriptor.MODE_CREATE
                      | ParcelFileDescriptor.MODE_TRUNCATE;
          } else if ("wa".equals(mode)) {
              modeBits = ParcelFileDescriptor.MODE_WRITE_ONLY
                      | ParcelFileDescriptor.MODE_CREATE
                      | ParcelFileDescriptor.MODE_APPEND;
          } else if ("rw".equals(mode)) {
              modeBits = ParcelFileDescriptor.MODE_READ_WRITE
                      | ParcelFileDescriptor.MODE_CREATE;
          } else if ("rwt".equals(mode)) {
              modeBits = ParcelFileDescriptor.MODE_READ_WRITE
                      | ParcelFileDescriptor.MODE_CREATE
                      | ParcelFileDescriptor.MODE_TRUNCATE;
          } else {
              throw new IllegalArgumentException("Invalid mode: " + mode);
          }
          return modeBits;
      }
  
      private static File buildPath(File base, String... segments) {
          File cur = base;
          for (String segment : segments) {
              if (segment != null) {
                  cur = new File(cur, segment);
              }
          }
          return cur;
      }
  
      private static String[] copyOf(String[] original, int newLength) {
          final String[] result = new String[newLength];
          System.arraycopy(original, 0, result, 0, newLength);
          return result;
      }
  
      private static Object[] copyOf(Object[] original, int newLength) {
          final Object[] result = new Object[newLength];
          System.arraycopy(original, 0, result, 0, newLength);
          return result;
      }
  }
  