/
iam.go
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/
iam.go
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// Copyright © 2023 Dell Inc. or its subsidiaries. All Rights Reserved.
//
// 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.
// Package iam provides funtions for managing objectscale IAM
//
// Example function using IAM client to create new user in ObjectScale.
//
// func ExampleCreateIAMUser(userName string) {
// x509Client := *http.DefaultClient
// objClient = client.AuthUser{Gateway: "https://testgateway", Username: "username", Password: "password"}
// iamSession, _ := session.NewSession(&aws.Config{ // github.com/aws/aws-sdk-go/service/session
// Endpoint: "https://testgateway/iam",
// Region: "us-west-2",
// CredentialsChainVerboseErrors: aws.Bool(true),
// HTTPClient: x509Client,
// },
// })
// iamClient = iam.New(iamSession) // github.com/aws/aws-sdk-go/service/iam
// InjectTokenToIAMClient(iamClient, &objClient, x509Client)
// InjectAccountIDToIAMClient(iamClient, "osaid185e2bf9e8ae35f")
// user, err := iamClient.CreateUser(&iam.CreateUserInput{
// UserName: userName,
// })
// }
package iam
import (
"errors"
"net/http"
"github.com/aws/aws-sdk-go/aws/request"
"github.com/aws/aws-sdk-go/service/iam"
"github.com/aws/aws-sdk-go/service/iam/iamiface"
v4 "github.com/aws/aws-sdk-go/aws/signer/v4"
"github.com/dell/goobjectscale/pkg/client/rest/client"
)
// Name of handlers and headers added to IAM.
const (
SDSHandlerName = "X-Sds-Handler"
SDSHeaderName = "X-Sds-Auth-Token"
AccountIDHandlerName = "X-Emc-Handler"
AccountIDHeaderName = "X-Emc-Namespace"
)
// InjectTokenToIAMClient configure IAM client to connect with Objectscale.
func InjectTokenToIAMClient(clientIam iamiface.IAMAPI, clientObjectscale client.Authenticator, httpClient http.Client) error {
realIam, ok := clientIam.(*iam.IAM)
if !ok {
return errors.New("invalid iam client")
}
realIam.Handlers.Sign.RemoveByName(v4.SignRequestHandler.Name)
handler := request.NamedHandler{
Name: SDSHandlerName,
Fn: func(r *request.Request) {
if !clientObjectscale.IsAuthenticated() {
err := clientObjectscale.Login(r.Context(), &httpClient)
if err != nil {
r.Error = err // no return intentional
}
}
token := clientObjectscale.Token()
r.HTTPRequest.Header.Add(SDSHeaderName, token)
},
}
swapped := realIam.Handlers.Sign.SwapNamed(handler)
if !swapped {
realIam.Handlers.Sign.PushFrontNamed(handler)
}
return nil
}
// InjectAccountIDToIAMClient configure IAM client to connect with Objectscale Account.
func InjectAccountIDToIAMClient(clientIam iamiface.IAMAPI, accountID string) error {
realIam, ok := clientIam.(*iam.IAM)
if !ok {
return errors.New("invalid iam client")
}
realIam.Handlers.Sign.RemoveByName(v4.SignRequestHandler.Name)
handler := request.NamedHandler{
Name: AccountIDHandlerName,
Fn: func(r *request.Request) {
r.HTTPRequest.Header.Add(AccountIDHeaderName, accountID)
},
}
swapped := realIam.Handlers.Sign.SwapNamed(handler)
if !swapped {
realIam.Handlers.Sign.PushFrontNamed(handler)
}
return nil
}