public async Task PostPolicyAcl()
{
var bucketName = _fixture.BucketName;
var objectName = "places/world.txt";
var credential = (await GoogleCredential.GetApplicationDefaultAsync()).UnderlyingCredential as ServiceAccountCredential;
// Sample: PostPolicyAcl
// Create a signed post policy which can be used to upload a specific object and
// expires in 10 seconds after creation.
// It also sets a starts-with condition on the acl form element, that should be met
// by the actual form used for posting.
UrlSigner urlSigner = UrlSigner
.FromServiceAccountCredential(credential);
UrlSigner.Options options = UrlSigner.Options
.FromDuration(TimeSpan.FromHours(1))
.WithSigningVersion(SigningVersion.V4)
.WithScheme("https");
UrlSigner.PostPolicy postPolicy = UrlSigner.PostPolicy.ForBucketAndKey(bucketName, objectName);
postPolicy.SetStartsWith(UrlSigner.PostPolicyStandardElement.Acl, "public");
UrlSigner.SignedPostPolicy signedPostPolicy = await urlSigner.SignAsync(postPolicy, options);
// Create an HTML form including all the fields in the signed post policy.
StringBuilder form = new StringBuilder();
form.AppendLine($"<form action=\"{signedPostPolicy.PostUrl}\" method=\"post\" enctype=\"multipart/form-data\">");
foreach (var field in signedPostPolicy.Fields)
{
form.AppendLine($"<input type=\"hidden\" name=\"{field.Key}\" value=\"{field.Value}\">");
}
// Include also an acl element with a value that meets the condition set in the policy.
form.AppendLine("<input type=\"hidden\" name=\"acl\" value=\"public-read\">");
// Include the file element. It should always be the last element in the form.
form.AppendLine("<input name=\"file\" type=\"file\">");
form.AppendLine("<input type=\"submit\" value=\"Upload\">");
form.AppendLine("</form>");
// You can now save the form to file and serve it as static content
// or send it as the response to a request made to your application.
File.WriteAllText("PostPolicyAcl.html", form.ToString());
//// End sample
Assert.Contains(signedPostPolicy.PostUrl.ToString(), form.ToString());
File.Delete("PostPolicyAcl.html");
}
public async Task PostPolicySimple()
{
var bucketName = _fixture.BucketName;
var objectName = "places/world.txt";
var credential = (await GoogleCredential.GetApplicationDefaultAsync()).UnderlyingCredential as ServiceAccountCredential;
// Sample: PostPolicySimple
// [START storage_generate_signed_post_policy_v4]
// Create a signed post policy which can be used to upload a specific object and
// expires in 1 hour after creation.
UrlSigner urlSigner = UrlSigner
.FromServiceAccountCredential(credential);
UrlSigner.Options options = UrlSigner.Options
.FromDuration(TimeSpan.FromHours(1))
.WithSigningVersion(SigningVersion.V4)
.WithScheme("https");
UrlSigner.PostPolicy postPolicy = UrlSigner.PostPolicy.ForBucketAndKey(bucketName, objectName);
postPolicy.SetCustomField(UrlSigner.PostPolicyCustomElement.GoogleMetadata, "x-goog-meta-test", "data");
UrlSigner.SignedPostPolicy signedPostPolicy = await urlSigner.SignAsync(postPolicy, options);
// Create an HTML form including all the fields in the signed post policy.
StringBuilder form = new StringBuilder();
form.AppendLine($"<form action=\"{signedPostPolicy.PostUrl}\" method=\"post\" enctype=\"multipart/form-data\">");
foreach (var field in signedPostPolicy.Fields)
{
form.AppendLine($"<input type=\"hidden\" name=\"{field.Key}\" value=\"{field.Value}\">");
}
// Include the file element. It should always be the last element in the form.
form.AppendLine("<input name=\"file\" type=\"file\">");
form.AppendLine("<input type=\"submit\" value=\"Upload\">");
form.AppendLine("</form>");
// You can now save the form to file and serve it as static content
// or send it as the response to a request made to your application.
File.WriteAllText("PostPolicySimple.html", form.ToString());
// [END storage_generate_signed_post_policy_v4]
//// End sample
Assert.Contains(signedPostPolicy.PostUrl.ToString(), form.ToString());
File.Delete("PostPolicySimple.html");
}