PresignedPostPolicy.cs

/*
 * MinIO .NET Library for Amazon S3 Compatible Cloud Storage, (C) 2017 MinIO, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

using Minio.DataModel;

namespace Minio.Examples.Cases;

public static class PresignedPostPolicy
{
    public static async Task Run(IMinioClient client,
        string bucketName = "my-bucketname",
        string objectName = "my-objectname")
    {
        if (client is null) throw new ArgumentNullException(nameof(client));
        // default value for expiration is 2 minutes
        var expiration = DateTime.UtcNow.AddMinutes(2);

        var form = new PostPolicy();
        form.SetKey(objectName);
        form.SetBucket(bucketName);
        form.SetExpires(expiration);

        var tuple = await client.PresignedPostPolicyAsync(form).ConfigureAwait(false);
        var curlCommand = "curl -k --insecure -X POST";
        foreach (var pair in tuple.Item2) curlCommand += $" -F {pair.Key}={pair.Value}";
        curlCommand = curlCommand + " -F file=@/etc/issue " + tuple.Item1 + bucketName + "/";
        _ = curlCommand;
    }
}