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/*
* MinIO Go Library for Amazon S3 Compatible Cloud Storage
* Copyright 2019 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.
*/
package credentials
import (
"encoding/xml"
"errors"
"net/http"
"net/url"
"time"
)
// AssumeRoleWithLDAPResponse contains the result of successful
// AssumeRoleWithLDAPIdentity request
type AssumeRoleWithLDAPResponse struct {
XMLName xml.Name `xml:"https://sts.amazonaws.com/doc/2011-06-15/ AssumeRoleWithLDAPIdentityResponse" json:"-"`
Result LDAPIdentityResult `xml:"AssumeRoleWithLDAPIdentityResult"`
ResponseMetadata struct {
RequestID string `xml:"RequestId,omitempty"`
} `xml:"ResponseMetadata,omitempty"`
}
// LDAPIdentityResult - contains credentials for a successful
// AssumeRoleWithLDAPIdentity request.
type LDAPIdentityResult struct {
Credentials struct {
AccessKey string `xml:"AccessKeyId" json:"accessKey,omitempty"`
SecretKey string `xml:"SecretAccessKey" json:"secretKey,omitempty"`
Expiration time.Time `xml:"Expiration" json:"expiration,omitempty"`
SessionToken string `xml:"SessionToken" json:"sessionToken,omitempty"`
} `xml:",omitempty"`
SubjectFromToken string `xml:",omitempty"`
}
// LDAPIdentity retrieves credentials from MinIO
type LDAPIdentity struct {
Expiry
stsEndpoint string
ldapUsername, ldapPassword string
}
// NewLDAPIdentity returns new credentials object that uses LDAP
// Identity.
func NewLDAPIdentity(stsEndpoint, ldapUsername, ldapPassword string) (*Credentials, error) {
return New(&LDAPIdentity{
stsEndpoint: stsEndpoint,
ldapUsername: ldapUsername,
ldapPassword: ldapPassword,
}), nil
}
// Retrieve gets the credential by calling the MinIO STS API for
// LDAP on the configured stsEndpoint.
func (k *LDAPIdentity) Retrieve() (value Value, err error) {
u, kerr := url.Parse(k.stsEndpoint)
if kerr != nil {
err = kerr
return
}
clnt := &http.Client{Transport: http.DefaultTransport}
v := url.Values{}
v.Set("Action", "AssumeRoleWithLDAPIdentity")
v.Set("Version", "2011-06-15")
v.Set("LDAPUsername", k.ldapUsername)
v.Set("LDAPPassword", k.ldapPassword)
u.RawQuery = v.Encode()
req, kerr := http.NewRequest("POST", u.String(), nil)
if kerr != nil {
err = kerr
return
}
resp, kerr := clnt.Do(req)
if kerr != nil {
err = kerr
return
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
err = errors.New(resp.Status)
return
}
r := AssumeRoleWithLDAPResponse{}
if err = xml.NewDecoder(resp.Body).Decode(&r); err != nil {
return
}
cr := r.Result.Credentials
k.SetExpiration(cr.Expiration, DefaultExpiryWindow)
return Value{
AccessKeyID: cr.AccessKey,
SecretAccessKey: cr.SecretKey,
SessionToken: cr.SessionToken,
SignerType: SignatureV4,
}, nil
}
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