vSphere Cloud Provider: update vmware/gomvomi godeps
This commit is contained in:
Doug MacEachern
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vendor/github.com/vmware/govmomi/sts/signer.go
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vendored
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vendor/github.com/vmware/govmomi/sts/signer.go
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/*
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Copyright (c) 2018 VMware, Inc. All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package sts
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import (
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"crypto"
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"crypto/rand"
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"crypto/rsa"
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"crypto/sha256"
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"crypto/tls"
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"encoding/base64"
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"errors"
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"fmt"
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"net/url"
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"time"
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"github.com/google/uuid"
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"github.com/vmware/govmomi/sts/internal"
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"github.com/vmware/govmomi/vim25/methods"
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"github.com/vmware/govmomi/vim25/soap"
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"github.com/vmware/govmomi/vim25/xml"
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)
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// Signer implements the soap.Signer interface.
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type Signer struct {
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Token string // Token is a SAML token
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Certificate *tls.Certificate // Certificate is used to sign requests
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Lifetime struct {
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Created time.Time
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Expires time.Time
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}
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user *url.Userinfo // user contains the credentials for bearer token request
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keyID string // keyID is the Signature UseKey ID, which is referenced in both the soap body and header
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}
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// signedEnvelope is similar to soap.Envelope, but with namespace and Body as innerxml
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type signedEnvelope struct {
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XMLName xml.Name `xml:"soap:Envelope"`
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NS string `xml:"xmlns:soap,attr"`
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Header soap.Header `xml:"soap:Header"`
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Body string `xml:",innerxml"`
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}
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// newID returns a unique Reference ID, with a leading underscore as required by STS.
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func newID() string {
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return "_" + uuid.New().String()
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}
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func (s *Signer) setTokenReference(info *internal.KeyInfo) error {
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var token struct {
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ID string `xml:",attr"` // parse saml2:Assertion ID attribute
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InnerXML string `xml:",innerxml"` // no need to parse the entire token
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}
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if err := xml.Unmarshal([]byte(s.Token), &token); err != nil {
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return err
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}
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info.SecurityTokenReference = &internal.SecurityTokenReference{
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WSSE11: "http://docs.oasis-open.org/wss/oasis-wss-wssecurity-secext-1.1.xsd",
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TokenType: "http://docs.oasis-open.org/wss/oasis-wss-saml-token-profile-1.1#SAMLV2.0",
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KeyIdentifier: &internal.KeyIdentifier{
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ID: token.ID,
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ValueType: "http://docs.oasis-open.org/wss/oasis-wss-saml-token-profile-1.1#SAMLID",
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},
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}
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return nil
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}
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// Sign is a soap.Signer implementation which can be used to sign RequestSecurityToken and LoginByTokenBody requests.
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func (s *Signer) Sign(env soap.Envelope) ([]byte, error) {
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var key *rsa.PrivateKey
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hasKey := false
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if s.Certificate != nil {
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key, hasKey = s.Certificate.PrivateKey.(*rsa.PrivateKey)
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if !hasKey {
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return nil, errors.New("sts: rsa.PrivateKey is required")
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}
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}
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created := time.Now().UTC()
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header := &internal.Security{
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WSU: internal.WSU,
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WSSE: "http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd",
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Timestamp: internal.Timestamp{
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NS: internal.WSU,
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ID: newID(),
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Created: created.Format(internal.Time),
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Expires: created.Add(time.Minute).Format(internal.Time), // If STS receives this request after this, it is assumed to have expired.
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},
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}
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env.Header.Security = header
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info := internal.KeyInfo{XMLName: xml.Name{Local: "ds:KeyInfo"}}
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var c14n, body string
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type requestToken interface {
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RequestSecurityToken() *internal.RequestSecurityToken
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}
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switch x := env.Body.(type) {
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case requestToken:
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if hasKey {
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// We need c14n for all requests, as its digest is included in the signature and must match on the server side.
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// We need the body in original form when using an ActAs or RenewTarget token, where the token and its signature are embedded in the body.
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req := x.RequestSecurityToken()
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c14n = req.C14N()
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body = req.String()
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id := newID()
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info.SecurityTokenReference = &internal.SecurityTokenReference{
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Reference: &internal.SecurityReference{
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URI: "#" + id,
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ValueType: "http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-x509-token-profile-1.0#X509v3",
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},
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}
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header.BinarySecurityToken = &internal.BinarySecurityToken{
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EncodingType: "http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-soap-message-security-1.0#Base64Binary",
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ValueType: "http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-x509-token-profile-1.0#X509v3",
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ID: id,
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Value: base64.StdEncoding.EncodeToString(s.Certificate.Certificate[0]),
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}
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} else {
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header.UsernameToken = &internal.UsernameToken{
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Username: s.user.Username(),
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}
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header.UsernameToken.Password, _ = s.user.Password()
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}
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case *methods.LoginByTokenBody:
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header.Assertion = s.Token
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if hasKey {
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if err := s.setTokenReference(&info); err != nil {
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return nil, err
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}
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c14n = internal.Marshal(x.Req)
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}
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default:
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// We can end up here via ssoadmin.SessionManager.Login().
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// No other known cases where a signed request is needed.
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header.Assertion = s.Token
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if hasKey {
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if err := s.setTokenReference(&info); err != nil {
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return nil, err
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}
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type Req interface {
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C14N() string
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}
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c14n = env.Body.(Req).C14N()
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}
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}
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if !hasKey {
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return xml.Marshal(env) // Bearer token without key to sign
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}
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id := newID()
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tmpl := `<soap:Body xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:wsu="%s" wsu:Id="%s">%s</soap:Body>`
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c14n = fmt.Sprintf(tmpl, internal.WSU, id, c14n)
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if body == "" {
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body = c14n
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} else {
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body = fmt.Sprintf(tmpl, internal.WSU, id, body)
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}
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header.Signature = &internal.Signature{
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XMLName: xml.Name{Local: "ds:Signature"},
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NS: internal.DSIG,
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ID: s.keyID,
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KeyInfo: info,
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SignedInfo: internal.SignedInfo{
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XMLName: xml.Name{Local: "ds:SignedInfo"},
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NS: internal.DSIG,
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CanonicalizationMethod: internal.Method{
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XMLName: xml.Name{Local: "ds:CanonicalizationMethod"},
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Algorithm: "http://www.w3.org/2001/10/xml-exc-c14n#",
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},
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SignatureMethod: internal.Method{
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XMLName: xml.Name{Local: "ds:SignatureMethod"},
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Algorithm: internal.SHA256,
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},
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Reference: []internal.Reference{
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internal.NewReference(header.Timestamp.ID, header.Timestamp.C14N()),
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internal.NewReference(id, c14n),
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},
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},
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}
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sum := sha256.Sum256([]byte(header.Signature.SignedInfo.C14N()))
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sig, err := rsa.SignPKCS1v15(rand.Reader, key, crypto.SHA256, sum[:])
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if err != nil {
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return nil, err
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}
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header.Signature.SignatureValue = internal.Value{
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XMLName: xml.Name{Local: "ds:SignatureValue"},
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Value: base64.StdEncoding.EncodeToString(sig),
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}
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return xml.Marshal(signedEnvelope{
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NS: "http://schemas.xmlsoap.org/soap/envelope/",
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Header: *env.Header,
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Body: body,
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})
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}
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