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sso.go
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/
sso.go
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package crowd
import (
"bytes"
"encoding/xml"
"fmt"
"io/ioutil"
"net/http"
"time"
)
// Session represents a single sign-on (SSO) session in Crowd
type Session struct {
XMLName struct{} `xml:"session"`
Expand string `xml:"expand,attr"`
Token string `xml:"token"`
User User `xml:"user,omitempty"`
Created time.Time `xml:"created-date"`
Expires time.Time `xml:"expiry-date"`
}
// session authentication request
type sessionAuthReq struct {
XMLName struct{} `xml:"authentication-context"`
Username string `xml:"username"`
Password string `xml:"password"`
ValidationFactors []sessionValidationFactor `xml:"validation-factors>validation-factor"`
}
// validation factors for session
type sessionValidationFactor struct {
XMLName struct{} `xml:"validation-factor"`
Name string `xml:"name"`
Value string `xml:"value"`
}
// session validation request -> just validation factors
type sessionValidationValidationFactor struct {
XMLName struct{} `xml:"validation-factors"`
ValidationFactors []sessionValidationFactor `xml:"validation-factor"`
}
// NewSession authenticates a user and starts a SSO session if valid.
func (c *Crowd) NewSession(user string, pass string, address string) (Session, error) {
s := Session{}
svf := sessionValidationFactor{Name: "remote_address", Value: address}
sar := sessionAuthReq{Username: user, Password: pass}
sar.ValidationFactors = append(sar.ValidationFactors, svf)
sarEncoded, err := xml.Marshal(sar)
if err != nil {
return s, err
}
sarBuf := bytes.NewBuffer(sarEncoded)
url := c.url + "rest/usermanagement/1/session"
c.Client.Jar = c.cookies
req, err := http.NewRequest("POST", url, sarBuf)
if err != nil {
return s, err
}
req.SetBasicAuth(c.user, c.passwd)
req.Header.Set("Accept", "application/xml")
req.Header.Set("Content-Type", "application/xml")
resp, err := c.Client.Do(req)
if err != nil {
return s, err
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return s, err
}
switch resp.StatusCode {
case 400:
er := Error{}
err = xml.Unmarshal(body, &er)
if err != nil {
return s, err
}
return s, fmt.Errorf("%s", er.Reason)
case 201:
err = xml.Unmarshal(body, &s)
if err != nil {
return s, err
}
default:
return s, fmt.Errorf("request failed: %s", resp.Status)
}
return s, nil
}
// ValidateSession validates a SSO token against Crowd. Returns error on failure
// or account lockout. Success is a populated Session with nil error.
func (c *Crowd) ValidateSession(token string, clientaddr string) (Session, error) {
s := Session{}
svf := sessionValidationFactor{Name: "remote_address", Value: clientaddr}
svvf := sessionValidationValidationFactor{}
svvf.ValidationFactors = append(svvf.ValidationFactors, svf)
svvfEncoded, err := xml.Marshal(svvf)
if err != nil {
return s, err
}
svvfBuf := bytes.NewBuffer(svvfEncoded)
url := c.url + "rest/usermanagement/1/session/" + token
c.Client.Jar = c.cookies
req, err := http.NewRequest("POST", url, svvfBuf)
if err != nil {
return s, err
}
req.SetBasicAuth(c.user, c.passwd)
req.Header.Set("Accept", "application/xml")
req.Header.Set("Content-Type", "application/xml")
resp, err := c.Client.Do(req)
if err != nil {
return s, err
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return s, err
}
switch resp.StatusCode {
case 400:
er := Error{}
err = xml.Unmarshal(body, &er)
if err != nil {
return s, err
}
return s, fmt.Errorf("%s", er.Reason)
case 404:
er := Error{}
err = xml.Unmarshal(body, &er)
if err != nil {
return s, err
}
return s, fmt.Errorf("%s", er.Reason)
case 200:
err = xml.Unmarshal(body, &s)
if err != nil {
return s, err
}
default:
return s, fmt.Errorf("request failed: %s", resp.Status)
}
return s, nil
}
// InvalidateSession invalidates SSO session token. Returns error on failure.
func (c *Crowd) InvalidateSession(token string) error {
c.Client.Jar = c.cookies
req, err := http.NewRequest("DELETE", c.url+"rest/usermanagement/1/session/"+token, nil)
if err != nil {
return err
}
req.SetBasicAuth(c.user, c.passwd)
req.Header.Set("Accept", "application/xml")
req.Header.Set("Content-Type", "application/xml")
resp, err := c.Client.Do(req)
if err != nil {
return err
}
defer resp.Body.Close()
if resp.StatusCode != 204 {
return fmt.Errorf("request failed: %s", resp.Status)
}
return nil
}
// GetSession gets SSO session information by token
func (c *Crowd) GetSession(token string) (s Session, err error) {
c.Client.Jar = c.cookies
url := c.url + "rest/usermanagement/1/session/" + token
req, err := http.NewRequest("GET", url, nil)
if err != nil {
return s, err
}
req.SetBasicAuth(c.user, c.passwd)
req.Header.Set("Accept", "application/xml")
req.Header.Set("Content-Type", "application/xml")
resp, err := c.Client.Do(req)
if err != nil {
return s, err
}
defer resp.Body.Close()
switch resp.StatusCode {
case 404:
return s, fmt.Errorf("session not found")
case 200:
// fall through switch without returning
default:
return s, fmt.Errorf("request failed: %s", resp.Status)
}
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return s, err
}
err = xml.Unmarshal(body, &s)
if err != nil {
return s, err
}
return s, nil
}