/
login.go
227 lines (202 loc) · 6.04 KB
/
login.go
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package iam
import (
"fmt"
"io"
"net/http"
"net/url"
"strings"
"time"
)
// CodeLogin uses the authorization_code grant type to fetch tokens
func (c *Client) CodeLogin(code string, redirectURI string) error {
// Authorize
u := *c.baseIAMURL
u.Opaque = c.baseIAMURL.Path + "authorize/oauth2/token"
req := &http.Request{
Method: "POST",
URL: &u,
Proto: "HTTP/1.1",
ProtoMajor: 1,
ProtoMinor: 1,
Header: make(http.Header),
Host: u.Host,
}
form := url.Values{}
form.Add("grant_type", "authorization_code")
form.Add("code", code)
if len(redirectURI) > 0 {
form.Add("redirect_uri", redirectURI)
}
body := form.Encode()
req.SetBasicAuth(c.config.OAuth2ClientID, c.config.OAuth2Secret)
req.Body = io.NopCloser(strings.NewReader(body))
req.ContentLength = int64(len(body))
return c.doTokenRequest(req)
}
// ServiceLogin logs a service in using a JWT signed with the service private key
func (c *Client) ServiceLogin(service Service) error {
accessTokenEndpoint := c.accessTokenEndpoint()
token, err := service.GenerateJWT(accessTokenEndpoint)
if err != nil {
return err
}
// Authorize
u := *c.baseIAMURL
u.Opaque = c.baseIAMURL.Path + "authorize/oauth2/token"
req := &http.Request{
Method: "POST",
URL: &u,
Proto: "HTTP/1.1",
ProtoMajor: 1,
ProtoMinor: 1,
Header: make(http.Header),
Host: u.Host,
}
form := url.Values{}
if len(c.config.Scopes) > 0 {
scopes := strings.Join(c.config.Scopes, " ")
form.Add("scope", scopes)
}
// HSDP IAM currently croaks on URL encoded grant_type value. INC0038532
body := "assertion=" + token
body += "&grant_type=urn:ietf:params:oauth:grant-type:jwt-bearer"
body += "&"
body += form.Encode()
// Remove Authorization header
req.Header.Del("Authorization")
req.Body = io.NopCloser(strings.NewReader(body))
req.ContentLength = int64(len(body))
c.service = service // Save service so we can refresh later!
return c.doTokenRequest(req)
}
// Login logs in a user with `username` and `password`
func (c *Client) Login(username, password string) error {
// Authorize
u := *c.baseIAMURL
u.Opaque = c.baseIAMURL.Path + "authorize/oauth2/token"
req := &http.Request{
Method: "POST",
URL: &u,
Proto: "HTTP/1.1",
ProtoMajor: 1,
ProtoMinor: 1,
Header: make(http.Header),
Host: u.Host,
}
form := url.Values{}
form.Add("username", username)
form.Add("password", password)
form.Add("grant_type", "password")
if len(c.config.Scopes) > 0 {
scopes := strings.Join(c.config.Scopes, " ")
form.Add("scope", scopes)
}
req.SetBasicAuth(c.config.OAuth2ClientID, c.config.OAuth2Secret)
req.Body = io.NopCloser(strings.NewReader(form.Encode()))
req.ContentLength = int64(len(form.Encode()))
c.service = Service{} // reset
return c.doTokenRequest(req)
}
// ClientCredentialsLogin logs in using client credentials
// The client credentials and scopes are expected to passed during configuration of the client
func (c *Client) ClientCredentialsLogin() error {
// Authorize
u := *c.baseIAMURL
u.Opaque = c.baseIAMURL.Path + "authorize/oauth2/token"
req := &http.Request{
Method: "POST",
URL: &u,
Proto: "HTTP/1.1",
ProtoMajor: 1,
ProtoMinor: 1,
Header: make(http.Header),
Host: u.Host,
}
form := url.Values{}
form.Add("grant_type", "client_credentials")
if len(c.config.Scopes) > 0 {
scopes := strings.Join(c.config.Scopes, " ")
form.Add("scope", scopes)
}
req.SetBasicAuth(c.config.OAuth2ClientID, c.config.OAuth2Secret)
req.Body = io.NopCloser(strings.NewReader(form.Encode()))
req.ContentLength = int64(len(form.Encode()))
return c.doTokenRequest(req)
}
// RevokeAccessToken revokes the access and refresh token
func (c *Client) RevokeAccessToken() error {
return c.revokeToken(c.token)
}
// RevokeRefreshAccessToken revokes the access and refresh token
func (c *Client) RevokeRefreshAccessToken() error {
return c.revokeToken(c.refreshToken)
}
type endSessionOptions struct {
IDTokenHint *string `url:"id_token_hint,omitempty"`
}
// EndSession ends the current active session
func (c *Client) EndSession() error {
req, err := c.newRequest(IAM, "GET", "authorize/oauth2/endsession", &endSessionOptions{
IDTokenHint: &c.idToken,
}, nil)
if err != nil {
return err
}
form := url.Values{}
if len(c.config.Scopes) > 0 {
scopes := strings.Join(c.config.Scopes, " ")
form.Add("scope", scopes)
}
req.SetBasicAuth(c.config.OAuth2ClientID, c.config.OAuth2Secret)
req.Body = io.NopCloser(strings.NewReader(form.Encode()))
req.ContentLength = int64(len(form.Encode()))
return c.doTokenRequest(req)
}
func (c *Client) revokeToken(token string) error {
req, err := c.newRequest(IAM, "POST", "authorize/oauth2/revoke", nil, nil)
if err != nil {
return err
}
form := url.Values{}
form.Add("token", token)
if len(c.config.Scopes) > 0 {
scopes := strings.Join(c.config.Scopes, " ")
form.Add("scope", scopes)
}
req.SetBasicAuth(c.config.OAuth2ClientID, c.config.OAuth2Secret)
req.Body = io.NopCloser(strings.NewReader(form.Encode()))
req.ContentLength = int64(len(form.Encode()))
return c.doTokenRequest(req)
}
func (c *Client) doTokenRequest(req *http.Request) error {
var tokenResponse tokenResponse
req.Header.Set("Accept", "application/json")
req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
req.Header.Set("Api-Version", loginAPIVersion)
resp, err := c.do(req, &tokenResponse)
if resp != nil {
defer func() {
_ = resp.Body.Close()
}()
}
if err != nil {
return err
}
if resp.StatusCode() != http.StatusOK {
return fmt.Errorf("login failed: %d", resp.StatusCode())
}
if tokenResponse.AccessToken == "" {
return ErrNotAuthorized
}
c.tokenType = OAuthToken
c.token = tokenResponse.AccessToken
if tokenResponse.RefreshToken != "" { // Doesn't always contain new refresh token
c.refreshToken = tokenResponse.RefreshToken
}
if tokenResponse.IDToken != "" {
c.idToken = tokenResponse.IDToken
}
c.expiresAt = time.Now().Add(time.Duration(tokenResponse.ExpiresIn) * time.Second)
c.scopes = strings.Split(tokenResponse.Scope, " ")
return nil
}