Tester les autorisations

Cette page explique comment vérifier si l'appelant a spécifié des autorisations.

En savoir plus

Pour obtenir une documentation détaillée incluant cet exemple de code, consultez les articles suivants :

Tester les autorisations pour les interfaces utilisateur personnalisées

Exemple de code

C++

Pour savoir comment installer et utiliser la bibliothèque cliente pour IAM, consultez la page Bibliothèques clientes IAM. Pour en savoir plus, consultez la documentation de référence de l'API Cloud IAM C++.

Pour vous authentifier auprès d'IAM, configurez le service Identifiants par défaut de l'application. Pour en savoir plus, consultez la page Configurer l'authentification pour un environnement de développement local.

namespace iam = ::google::cloud::iam_admin_v1;
[](std::string const& name, std::vector<std::string> const& permissions) {
  iam::IAMClient client(iam::MakeIAMConnection());
  auto response = client.TestIamPermissions(name, permissions);
  if (!response) throw std::move(response).status();
  std::cout << "Permissions successfully tested: " << response->DebugString()
            << "\n";
}

C#


using System;
using System.Collections.Generic;
using Google.Apis.Auth.OAuth2;
using Google.Apis.CloudResourceManager.v1;
using Google.Apis.CloudResourceManager.v1.Data;

public partial class AccessManager
{
    public static IList<String> TestIamPermissions(string projectId)
    {
        var credential = GoogleCredential.GetApplicationDefault()
            .CreateScoped(CloudResourceManagerService.Scope.CloudPlatform);
        var service = new CloudResourceManagerService(
            new CloudResourceManagerService.Initializer
            {
                HttpClientInitializer = credential
            });

        TestIamPermissionsRequest requestBody = new TestIamPermissionsRequest();
        var permissions = new List<string>() { "resourcemanager.projects.get", "resourcemanager.projects.delete" };
        requestBody.Permissions = new List<string>(permissions);
        var returnedPermissions = service.Projects.TestIamPermissions(requestBody, projectId).Execute().Permissions;

        return returnedPermissions;
    }
}

Java

import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.json.gson.GsonFactory;
import com.google.api.services.cloudresourcemanager.v3.CloudResourceManager;
import com.google.api.services.cloudresourcemanager.v3.model.TestIamPermissionsRequest;
import com.google.api.services.cloudresourcemanager.v3.model.TestIamPermissionsResponse;
import com.google.api.services.iam.v1.IamScopes;
import com.google.auth.http.HttpCredentialsAdapter;
import com.google.auth.oauth2.GoogleCredentials;
import java.io.IOException;
import java.security.GeneralSecurityException;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;

public class TestPermissions {

  // Tests if the caller has the listed permissions.
  public static void testPermissions(String projectId) {
    // projectId = "my-project-id"

    CloudResourceManager service = null;
    try {
      service = createCloudResourceManagerService();
    } catch (IOException | GeneralSecurityException e) {
      System.out.println("Unable to initialize service: \n" + e.toString());
      return;
    }

    List<String> permissionsList =
        Arrays.asList("resourcemanager.projects.get", "resourcemanager.projects.delete");

    TestIamPermissionsRequest requestBody =
        new TestIamPermissionsRequest().setPermissions(permissionsList);
    try {
      TestIamPermissionsResponse testIamPermissionsResponse =
          service.projects().testIamPermissions(projectId, requestBody).execute();

      System.out.println(
          "Of the permissions listed in the request, the caller has the following: "
              + testIamPermissionsResponse.getPermissions().toString());
    } catch (IOException e) {
      System.out.println("Unable to test permissions: \n" + e.toString());
    }
  }

  public static CloudResourceManager createCloudResourceManagerService()
      throws IOException, GeneralSecurityException {
    // Use the Application Default Credentials strategy for authentication. For more info, see:
    // https://cloud.google.com/docs/authentication/production#finding_credentials_automatically
    GoogleCredentials credential =
        GoogleCredentials.getApplicationDefault()
            .createScoped(Collections.singleton(IamScopes.CLOUD_PLATFORM));

    CloudResourceManager service =
        new CloudResourceManager.Builder(
                GoogleNetHttpTransport.newTrustedTransport(),
                GsonFactory.getDefaultInstance(),
                new HttpCredentialsAdapter(credential))
            .setApplicationName("service-accounts")
            .build();
    return service;
  }
}

Python

def test_permissions(project_id: str) -> dict:
    """Tests IAM permissions of the caller"""

    credentials = service_account.Credentials.from_service_account_file(
        filename=os.environ["GOOGLE_APPLICATION_CREDENTIALS"],
        scopes=["https://www.googleapis.com/auth/cloud-platform"],
    )
    service = googleapiclient.discovery.build(
        "cloudresourcemanager", "v1", credentials=credentials
    )

    permissions = {
        "permissions": [
            "resourcemanager.projects.get",
            "resourcemanager.projects.delete",
        ]
    }

    request = service.projects().testIamPermissions(
        resource=project_id, body=permissions
    )
    returnedPermissions = request.execute()
    print(returnedPermissions)
    return returnedPermissions

Étapes suivantes

Pour rechercher et filtrer des exemples de code pour d'autres produits Google Cloud, consultez l'explorateur d'exemples Google Cloud.