public static async Task Run(MinioClient client,
string bucketName = "my-bucketname",
string objectName = "my-objectname")
{
// 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 args = new PresignedPostPolicyArgs()
.WithBucket(bucketName)
.WithObject(objectName)
.WithPolicy(form);
var tuple = await client.PresignedPostPolicyAsync(form);
var curlCommand = "curl -k --insecure -X POST";
foreach (var pair in tuple.Item2)
{
curlCommand = curlCommand + $" -F {pair.Key}={pair.Value}";
}
curlCommand = curlCommand + " -F file=@/etc/issue " + tuple.Item1 + bucketName + "/";
}
public async static Task Run(MinioClient client)
{
try
{
PostPolicy form = new PostPolicy();
DateTime expiration = DateTime.UtcNow;
form.SetExpires(expiration.AddDays(10));
form.SetKey("my-objectname");
form.SetBucket("my-bucketname");
Tuple <string, Dictionary <string, string> > tuple = await client.PresignedPostPolicyAsync(form);
string curlCommand = "curl -X POST ";
foreach (KeyValuePair <string, string> pair in tuple.Item2)
{
curlCommand = curlCommand + String.Format(" -F {0}={1}", pair.Key, pair.Value);
}
curlCommand = curlCommand + " -F file=@/etc/bashrc " + tuple.Item1; // https://s3.amazonaws.com/my-bucketname";
Console.Out.WriteLine(curlCommand);
}
catch (Exception e)
{
Console.Out.WriteLine("Exception ", e.Message);
}
}
public async Task <string> GetPresignedUploadUrlAsync(DTOs.Uploads.FileInfo fileInfo)
{
string endpoint = _config["AppSettings:S3Endpoint"];
string apiKey = _config["AppSettings:S3ApiKey"];
string apiSecret = _config["AppSettings:S3ApiSecret"];
string bucketName = _config["AppSettings:S3BucketName"];
PostPolicy policy = new PostPolicy();
DateTime expiredIn = DateTime.UtcNow.AddMinutes(15);
policy.SetExpires(expiredIn);
policy.SetContentLength(fileInfo.Size);
policy.SetcontentType(fileInfo.ContentType);
policy.SetKey(fileInfo.Name);
policy.SetBucket(bucketName);
var minio = new MinioClient(endpoint, apiKey, apiSecret);
await minio.PresignedPostPolicyAsync(policy);
string presignedUrl = await minio.PresignedPutObjectAsync(bucketName, fileInfo.Name, 15 * 60);
return(presignedUrl);
}
static int Main()
{
/// Note: YOUR-ACCESSKEYID, YOUR-SECRETACCESSKEY, my-bucketname and
/// my-objectname are dummy values, please replace them with original values.
var client = new MinioClient("s3.amazonaws.com", "YOUR-ACCESSKEYID", "YOUR-SECRETACCESSKEY");
PostPolicy form = new PostPolicy();
DateTime expiration = DateTime.UtcNow;
form.SetExpires(expiration.AddDays(10));
form.SetKey("my-objectname");
form.SetBucket("my-bucketname");
Dictionary <string, string> formData = client.PresignedPostPolicy(form);
string curlCommand = "curl ";
foreach (KeyValuePair <string, string> pair in formData)
{
curlCommand = curlCommand + " -F " + pair.Key + "=" + pair.Value;
}
curlCommand = curlCommand + " -F file=@/etc/bashrc https://s3.amazonaws.com/my-bucketname";
Console.Out.WriteLine(curlCommand);
return(0);
}
public async static Task Run(MinioClient client,
string bucketName = "my-bucketname",
string objectName = "my-objectname")
{
// default value for expiration is 2 minutes
DateTime expiration = DateTime.UtcNow.AddMinutes(2);
// DefaultPolicy defaultPolicy = delegate (string bucketName,
// string objectName,
// DateTime expiration)
// {
PostPolicy form = new PostPolicy();
form.SetKey(objectName);
form.SetBucket(bucketName);
form.SetExpires(expiration);
// return policy;
// };
// PostPolicy postPolicy = defaultPolicy(bucketName,
// objectName,
// expiration);
PresignedPostPolicyArgs args = new PresignedPostPolicyArgs()
.WithBucket(bucketName)
.WithObject(objectName)
.WithPolicy(form);
var tuple = await client.PresignedPostPolicyAsync(form);
string curlCommand = "curl -k --insecure -X POST";
foreach (KeyValuePair <string, string> pair in tuple.Item2)
{
curlCommand = curlCommand + $" -F {pair.Key}={pair.Value}";
}
curlCommand = curlCommand + " -F file=@/etc/issue " + tuple.Item1 + bucketName + "/";
}
public void TestPresignedPostPolicy()
{
DateTime requestDate = new DateTime(2020, 05, 01, 15, 45, 33, DateTimeKind.Utc);
var authenticator = new V4Authenticator(false, "my-access-key", "secretkey");
var policy = new PostPolicy();
policy.SetBucket("bucket-name");
policy.SetKey("object-name");
policy.SetAlgorithm("AWS4-HMAC-SHA256");
var region = "mock-location";
policy.SetCredential(authenticator.GetCredentialString(requestDate, region));
policy.SetDate(requestDate);
policy.SetSessionToken(null);
string policyBase64 = policy.Base64();
string signature = authenticator.PresignPostSignature(region, requestDate, policyBase64);
policy.SetPolicy(policyBase64);
policy.SetSignature(signature);
var headers = new Dictionary <string, string>
{
{ "bucket", "bucket-name" },
{ "key", "object-name" },
{ "x-amz-algorithm", "AWS4-HMAC-SHA256" },
{ "x-amz-credential", "my-access-key/20200501/mock-location/s3/aws4_request" },
{ "x-amz-date", "20200501T154533Z" },
{ "policy", "eyJleHBpcmF0aW9uIjoiMDAwMS0wMS0wMVQwMDowMDowMC4wMDBaIiwiY29uZGl0aW9ucyI6W1siZXEiLCIkYnVja2V0IiwiYnVja2V0LW5hbWUiXSxbImVxIiwiJGtleSIsIm9iamVjdC1uYW1lIl0sWyJlcSIsIiR4LWFtei1hbGdvcml0aG0iLCJBV1M0LUhNQUMtU0hBMjU2Il0sWyJlcSIsIiR4LWFtei1jcmVkZW50aWFsIiwibXktYWNjZXNzLWtleS8yMDIwMDUwMS9tb2NrLWxvY2F0aW9uL3MzL2F3czRfcmVxdWVzdCJdLFsiZXEiLCIkeC1hbXotZGF0ZSIsIjIwMjAwNTAxVDE1NDUzM1oiXV19" },
{ "x-amz-signature", "ec6dad862909ee905cfab3ef87ede0e666eebd6b8f00d28e5df104a8fcbd4027" },
};
CollectionAssert.AreEquivalent(headers, policy.GetFormData());
}
static int Main()
{
/// Note: s3 AccessKey and SecretKey needs to be added in App.config file
/// See instructions in README.md on running examples for more information.
var client = new MinioClient("s3.amazonaws.com", ConfigurationManager.AppSettings["s3AccessKey"],
ConfigurationManager.AppSettings["s3SecretKey"]);
PostPolicy form = new PostPolicy();
DateTime expiration = DateTime.UtcNow;
form.SetExpires(expiration.AddDays(10));
form.SetKey("my-objectname");
form.SetBucket("my-bucketname");
Dictionary <string, string> formData = client.PresignedPostPolicy(form);
string curlCommand = "curl ";
foreach (KeyValuePair <string, string> pair in formData)
{
curlCommand = curlCommand + " -F " + pair.Key + "=" + pair.Value;
}
curlCommand = curlCommand + " -F file=@/etc/bashrc https://s3.amazonaws.com/my-bucketname";
Console.Out.WriteLine(curlCommand);
return(0);
}
private async static Task PresignedPostPolicy_Test1(MinioClient minio)
{
Console.Out.WriteLine("Test1: PresignedPostPolicyAsync");
string bucketName = GetRandomName(15);
string objectName = GetRandomName(10);
string fileName = CreateFile(1 * MB);
try
{
await Setup_Test(minio, bucketName);
await minio.PutObjectAsync(bucketName,
objectName,
fileName);
// Generate presigned post policy url
PostPolicy form = new PostPolicy();
DateTime expiration = DateTime.UtcNow;
form.SetExpires(expiration.AddDays(10));
form.SetKey(objectName);
form.SetBucket(bucketName);
var pairs = new List <KeyValuePair <string, string> >();
string url = "https://s3.amazonaws.com/" + bucketName;
Tuple <string, System.Collections.Generic.Dictionary <string, string> > policyTuple = await minio.PresignedPostPolicyAsync(form);
var httpClient = new HttpClient();
using (var stream = File.OpenRead(fileName))
{
MultipartFormDataContent multipartContent = new MultipartFormDataContent();
multipartContent.Add(new StreamContent(stream), fileName, objectName);
multipartContent.Add(new FormUrlEncodedContent(pairs));
var response = await httpClient.PostAsync(url, multipartContent);
response.EnsureSuccessStatusCode();
}
// Validate
PolicyType policy = await minio.GetPolicyAsync(bucketName, objectName.Substring(5));
Assert.AreEqual(policy.GetType(), PolicyType.READ_ONLY);
await minio.RemoveObjectAsync(bucketName, objectName);
await TearDown(minio, bucketName);
File.Delete(fileName);
}
catch (Exception e)
{
Console.Out.WriteLine("Exception ", e.Message);
}
Console.Out.WriteLine("Test1: PresignedPostPolicyAsync Complete");
await minio.RemoveObjectAsync(bucketName, objectName);
await TearDown(minio, bucketName);
File.Delete(fileName);
Console.Out.WriteLine("Test1: PresignedPostPolicyAsync Complete");
}
