## O `OAuth2PasswordBearer` do **FastAPI** { #fastapis-oauth2passwordbearer }

O **FastAPI** fornece várias ferramentas, em diferentes níveis de abstração, para implementar essas funcionalidades de segurança.

Neste exemplo, vamos usar **OAuth2**, com o fluxo **Password**, usando um token **Bearer**. Fazemos isso usando a classe `OAuth2PasswordBearer`.

/// info | Informação

## `OAuth2PasswordBearer` de **FastAPI** { #fastapis-oauth2passwordbearer }

**FastAPI** proporciona varias herramientas, en diferentes niveles de abstracción, para implementar estas funcionalidades de seguridad.

En este ejemplo vamos a usar **OAuth2**, con el flujo **Password**, usando un token **Bearer**. Hacemos eso utilizando la clase `OAuth2PasswordBearer`.

/// info | Información

/**
 * A helper for concurrency testing. One or more {@code TestThread} instances are instantiated in a
 * test with reference to the same "lock-like object", and then their interactions with that object
 * are choreographed via the various methods on this class.
 *
 * <p>A "lock-like object" is really any object that may be used for concurrency control. If the
 * {@link #callAndAssertBlocks} method is ever called in a test, the lock-like object must have a

import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Tests for {@link PairedStatsAccumulator}. This tests the stats methods for instances built with
 * {@link PairedStatsAccumulator#add}, and various error cases of that method. For tests of the
 * {@link PairedStatsAccumulator#snapshot} method which returns {@link PairedStats} instances, see
 * {@link PairedStatsTest}.
 *
 * @author Pete Gillin
 */
@NullUnmarked

import org.codelibs.core.io.FileUtil;
import org.codelibs.fess.crawler.Constants;

/**
 * Represents the response data obtained from a crawled resource.
 * This class encapsulates various details of an HTTP response, including
 * status code, content type, content length, and the response body.
 * It also provides methods for managing metadata, child URLs, and temporary files.
 */

        }
    }

    /**
     * Check if path contains traversal sequences
     */
    private boolean containsTraversal(String path) {
        // Check various forms of directory traversal
        if (TRAVERSAL_PATTERN.matcher(path).find()) {
            return true;
        }

        // Check encoded traversals
        if (ENCODED_TRAVERSAL.matcher(path).find()) {

        assertTrue(ace.isAllow());
        assertEquals(0x08, ace.getFlags());
        assertEquals(0x00000001, ace.getAccessMask());
    }

    @ParameterizedTest
    @DisplayName("Test various access mask values")
    @ValueSource(ints = { 0x00000001, // FILE_READ_DATA
            0x00000002, // FILE_WRITE_DATA
            0x00000004, // FILE_APPEND_DATA
            0x00010000, // DELETE

import jakarta.annotation.Resource;

/**
 * Helper class for handling permission-related operations in Fess.
 * Provides functionality to encode/decode permission strings and extract
 * role type information from various file system protocols (SMB, file, FTP).
 */
public class PermissionHelper {
    /** Logger instance for this class */
    private static final Logger logger = LogManager.getLogger(PermissionHelper.class);

import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Tests for {@link PairedStatsAccumulator}. This tests the stats methods for instances built with
 * {@link PairedStatsAccumulator#add}, and various error cases of that method. For tests of the
 * {@link PairedStatsAccumulator#snapshot} method which returns {@link PairedStats} instances, see
 * {@link PairedStatsTest}.
 *
 * @author Pete Gillin
 */
@NullUnmarked

        FileNotifyInformation info = response.getNotifyInformation().get(0);
        assertEquals(0, info.getAction());
        assertNull(info.getFileName());
    }

    @DisplayName("Test readParametersWireFormat with various file actions")
    @ParameterizedTest
    @ValueSource(ints = { FileNotifyInformation.FILE_ACTION_ADDED, FileNotifyInformation.FILE_ACTION_REMOVED,