forked from Versent/saml2aws
/
akamai.go
674 lines (542 loc) · 19.9 KB
/
akamai.go
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package akamai
import (
"bytes"
"fmt"
"html"
"io/ioutil"
"log"
"net/http"
"net/url"
"strings"
"time"
"github.com/gngj/saml2aws/v2/pkg/prompter"
"github.com/sirupsen/logrus"
"github.com/PuerkitoBio/goquery"
"github.com/gngj/saml2aws/v2/pkg/cfg"
"github.com/gngj/saml2aws/v2/pkg/creds"
"github.com/gngj/saml2aws/v2/pkg/provider"
"github.com/pkg/errors"
"github.com/tidwall/gjson"
"encoding/json"
)
const (
IdentifierDuoMfa = "duo"
IdentifierSmsMfa = "sms"
IdentifierEmailMfa = "email"
IdentifierTotpMfa = "totp"
)
var logger = logrus.WithField("provider", "akamai")
var (
supportedMfaOptions = map[string]MfaUserOption{
IdentifierDuoMfa: {"DUO MFA authentication", "duo"},
IdentifierSmsMfa: {"SMS MFA authentication", "sms"},
IdentifierEmailMfa: {"EMAIL MFA authentication", "email"},
IdentifierTotpMfa: {"TOTP MFA authentication", "totp"},
}
)
type MfaUserOption struct {
UserDisplayString string
UserMfaOption string
}
// Client is a wrapper representing a Akamai SAML client
type Client struct {
provider.ValidateBase
client *provider.HTTPClient
mfa string
}
// AuthRequest represents an mfa Akamai request
type AuthRequest struct {
Username string `json:"username"`
Password string `json:"password"`
}
// Navigate request for saml
type NavRequest struct {
Hostname string `json:"hostname"`
}
type MfaPushRequest struct {
Force bool `json:"force"`
Uuid string `json:"uuid"`
}
type MfaTokenVerify struct {
Category string `json:"category"`
Token string `json:"token"`
Uuid string `json:"uuid"`
DuoSigRequest string `json:"sig_request"`
DuoSigResponse string `json:"sig_response"`
}
// New creates a new Akamai client
func New(idpAccount *cfg.IDPAccount) (*Client, error) {
tr := provider.NewDefaultTransport(idpAccount.SkipVerify)
client, err := provider.NewHTTPClient(tr, provider.BuildHttpClientOpts(idpAccount))
if err != nil {
return nil, errors.Wrap(err, "error building http client")
}
// assign a response validator to ensure all responses are either success or a redirect
// this is to avoid have explicit checks for every single response
client.CheckResponseStatus = provider.SuccessOrRedirectResponseValidator
return &Client{
client: client,
mfa: idpAccount.MFA,
}, nil
}
// Authenticate logs into Akamai and returns a SAML response
func (oc *Client) Authenticate(loginDetails *creds.LoginDetails) (string, error) {
var samlAssertion string
akamaiURL, err := url.Parse(loginDetails.URL)
if err != nil {
return samlAssertion, errors.Wrap(err, "error building akamaiURL")
}
akamaiOrgHost := akamaiURL.Host
akamaiQuery := akamaiURL.Query()
akamaiSamlApp := string(akamaiQuery.Get("app"))
// Get xsrf data and cookie by doing get request
akamaiLoginURL := fmt.Sprintf("https://%s/", akamaiOrgHost)
req, err := http.NewRequest("GET", akamaiLoginURL, nil)
if err != nil {
return samlAssertion, errors.Wrap(err, "error building authentication request")
}
res, err := oc.client.Do(req)
if err != nil {
return samlAssertion, errors.Wrap(err, "error retrieving login request")
}
doc, err := goquery.NewDocumentFromReader(res.Body)
if err != nil {
return samlAssertion, errors.Wrap(err, "error parsing document")
}
xsrfToken, ok := doc.Find("input[id=\"xsrf\"]").Attr("value")
if !ok {
return samlAssertion, errors.Wrap(err, "unable to locate xsrf token in html")
}
// Send login request to Akamai
authReq := AuthRequest{Username: loginDetails.Username, Password: loginDetails.Password}
authBody := new(bytes.Buffer)
err = json.NewEncoder(authBody).Encode(authReq)
if err != nil {
return samlAssertion, errors.Wrap(err, "error encoding authreq")
}
authSubmitURL := fmt.Sprintf("https://%s/api/v1/login", akamaiOrgHost)
loginReq, err := http.NewRequest("POST", authSubmitURL, authBody)
if err != nil {
return samlAssertion, errors.Wrap(err, "error building authentication request")
}
loginReq.Header.Add("Content-Type", "application/json")
loginReq.Header.Add("Accept", "application/json")
loginReq.Header.Add("xsrf", string(xsrfToken))
res, err = oc.client.Do(loginReq)
if err != nil {
return samlAssertion, errors.Wrap(err, "error login to EAA IDP")
}
body, err := ioutil.ReadAll(res.Body)
if err != nil {
return samlAssertion, errors.Wrap(err, "error retrieving body from response")
}
resp := string(body)
authStatus := gjson.Get(resp, "status").String()
if authStatus != "200" {
authFailReason := gjson.Get(resp, "msg").String()
log.Printf("Login Failed %s", authFailReason)
return samlAssertion, errors.Wrap(err, "Login Failure")
}
// Send saml navigate request to Akamai
navReq := NavRequest{Hostname: akamaiSamlApp}
navBody := new(bytes.Buffer)
err = json.NewEncoder(navBody).Encode(navReq)
if err != nil {
return samlAssertion, errors.Wrap(err, "error encoding navreq")
}
navSubmitURL := fmt.Sprintf("https://%s/api/v2/apps/navigate", akamaiOrgHost)
navloginReq, err := http.NewRequest("POST", navSubmitURL, navBody)
if err != nil {
return samlAssertion, errors.Wrap(err, "error building navigation request")
}
navloginReq.Header.Add("Content-Type", "application/json")
navloginReq.Header.Add("Accept", "application/json")
navloginReq.Header.Add("xsrf", string(xsrfToken))
res, err = oc.client.Do(navloginReq)
if err != nil {
return samlAssertion, errors.Wrap(err, "error while navigation request to EAA ")
}
body, err = ioutil.ReadAll(res.Body)
if err != nil {
return samlAssertion, errors.Wrap(err, "error retrieving response from navigate request")
}
mfaStatus := gjson.GetBytes(body, "mfa.status").String()
if mfaStatus == "verify" {
err = verifyMfa(oc, akamaiOrgHost, loginDetails, xsrfToken)
if err != nil {
return samlAssertion, errors.Wrap(err, "error verifying MFA")
}
} else if mfaStatus == "register" {
log.Println("MFA is enabled but not registered for user. Register MFA by accessing EAA IDP from Browser")
return samlAssertion, errors.Wrap(err, "register mfa by logging to IDP")
}
/* MFA is done call navigate again */
navReq = NavRequest{Hostname: akamaiSamlApp}
navBody = new(bytes.Buffer)
err = json.NewEncoder(navBody).Encode(navReq)
if err != nil {
return samlAssertion, errors.Wrap(err, "error encoding authreq")
}
navSubmitURL = fmt.Sprintf("https://%s/api/v2/apps/navigate", akamaiOrgHost)
navloginReq, err = http.NewRequest("POST", navSubmitURL, navBody)
if err != nil {
return samlAssertion, errors.Wrap(err, "error sending final navigate request")
}
navloginReq.Header.Add("Content-Type", "application/json")
navloginReq.Header.Add("Accept", "application/json")
navloginReq.Header.Add("xsrf", string(xsrfToken))
res, err = oc.client.Do(navloginReq)
if err != nil {
return samlAssertion, errors.Wrap(err, "error navigate request to EAA ")
}
body, err = ioutil.ReadAll(res.Body)
if err != nil {
return samlAssertion, errors.Wrap(err, "error retrieving body from response")
}
/* saml assertion response from json of navigate */
samlResponseHtml := gjson.GetBytes(body, "navigate.body").String()
doc, err = goquery.NewDocumentFromReader(strings.NewReader(samlResponseHtml))
if err != nil {
return samlAssertion, errors.Wrap(err, "error parsing saml response in document")
}
samlAssertion, ok = doc.Find("input[name=\"SAMLResponse\"]").Attr("value")
if !ok {
return samlAssertion, errors.Wrap(err, "unable to locate SAMLResponse in html")
}
logger.Debug("auth complete")
return samlAssertion, nil
}
func verifyMfa(oc *Client, akamaiOrgHost string, loginDetails *creds.LoginDetails, xsrfToken string) error {
/* Get supported MFA for this login */
mfaConfigURL := fmt.Sprintf("https://%s/api/v1/config/mfa", akamaiOrgHost)
mfaConfigReq, err := http.NewRequest("GET", mfaConfigURL, nil)
if err != nil {
return errors.Wrap(err, "error building mfa config request")
}
mfaConfigReq.Header.Add("Accept", "application/json")
mfaConfigReq.Header.Add("xsrf", string(xsrfToken))
res, err := oc.client.Do(mfaConfigReq)
if err != nil {
return errors.Wrap(err, "error mfa config request to EAA ")
}
body, err := ioutil.ReadAll(res.Body)
if err != nil {
return errors.Wrap(err, "error retrieving mfa config request")
}
mfaConfigData := gjson.GetBytes(body, "mfa.config.options")
if mfaConfigData.Index == 0 {
log.Println("Mfa Config option not found")
return errors.Wrap(err, "Mfa not configured ")
}
/* Mfa config data present or not check otherwise return directly */
mfaOption := 0
var mfaOptions []MfaUserOption
for _, name := range mfaConfigData.Array() {
identifier := name.String()
if val, ok := supportedMfaOptions[identifier]; ok {
mfaOptions = append(mfaOptions, val)
}
}
/* Get MFA token settings from IDP */
mfaSettingURL := fmt.Sprintf("https://%s/api/v1/mfa/token/settings", akamaiOrgHost)
mfaSettingReq, err := http.NewRequest("GET", mfaSettingURL, nil)
if err != nil {
return errors.Wrap(err, "error building mfa setting request")
}
mfaSettingReq.Header.Add("Accept", "application/json")
mfaSettingReq.Header.Add("xsrf", string(xsrfToken))
res, err = oc.client.Do(mfaSettingReq)
if err != nil {
return errors.Wrap(err, "error mfa setting request to EAA ")
}
mfaSettingData, err := ioutil.ReadAll(res.Body)
if err != nil {
return errors.Wrap(err, "error retrieving body from response")
}
var mfaDisplayOptions []string
var mfaUserOption string
var mfaConfiguredSupported int
if oc.mfa != "Auto" {
mfaUserOption = strings.ToLower(oc.mfa)
for _, val := range mfaOptions {
if mfaUserOption == val.UserMfaOption {
mfaDisplayOptions = nil
mfaConfiguredSupported = 1
break
}
mfaDisplayOptions = append(mfaDisplayOptions, val.UserDisplayString)
}
mfaDisplayNum := len(mfaDisplayOptions)
if mfaDisplayNum > 1 {
mfaOption = prompter.Choose("Select which MFA option to use", mfaDisplayOptions)
mfaUserOption = mfaOptions[mfaOption].UserMfaOption
} else if mfaDisplayNum == 1 {
mfaUserOption = mfaOptions[1].UserMfaOption
} else if mfaDisplayNum == 0 && mfaConfiguredSupported != 1 {
return errors.New("unsupported mfa provider")
}
} else {
mfaUserOption = gjson.GetBytes(mfaSettingData, "mfa.settings.preferred.option").String()
}
if _, ok := supportedMfaOptions[mfaUserOption]; !ok {
return errors.New("unsupported mfa provider")
}
/* specific mfa */
switch mfa := mfaUserOption; mfa {
case IdentifierSmsMfa, IdentifierEmailMfa, IdentifierTotpMfa:
/* 1. Get MFA UUID */
mfaUuid := fmt.Sprintf("mfa.settings.%s.0.uuid", mfa)
uuidMfa := gjson.GetBytes(mfaSettingData, mfaUuid).String()
/* 2.Push MFA */
var mfaApi = mfa
if mfa == IdentifierSmsMfa {
mfaApi = "phone"
}
var mfaResStatus string
if mfa == IdentifierSmsMfa || mfa == IdentifierEmailMfa {
mfaPushURL := fmt.Sprintf("https://%s/api/v1/mfa/user/%s/token/push", akamaiOrgHost, mfaApi)
mfaPushData := MfaPushRequest{Force: false, Uuid: uuidMfa}
mfaPushBody := new(bytes.Buffer)
err = json.NewEncoder(mfaPushBody).Encode(mfaPushData)
if err != nil {
return errors.Wrap(err, "error encoding mfa push data ")
}
mfaPushReq, err := http.NewRequest("POST", mfaPushURL, mfaPushBody)
if err != nil {
return errors.Wrap(err, "error building mfa push request")
}
mfaPushReq.Header.Add("Content-Type", "application/json")
mfaPushReq.Header.Add("Accept", "application/json")
mfaPushReq.Header.Add("xsrf", string(xsrfToken))
res, err = oc.client.Do(mfaPushReq)
if err != nil {
return errors.Wrap(err, "error while sending MFA push code ")
}
body, err = ioutil.ReadAll(res.Body)
if err != nil {
return errors.Wrap(err, "error retrieving MFA push response ")
}
mfaResStatus := gjson.GetBytes(body, "status").String()
if mfaResStatus != "200" {
return errors.Wrap(err, "Unable to send mfa token")
}
}
/* 3. Verify MFA */
verifyCode := prompter.StringRequired("Enter MFA verification code")
mfaVerifyURL := fmt.Sprintf("https://%s/api/v1/mfa/user/%s/token/verify", akamaiOrgHost, mfaApi)
mfaVerifyData := MfaTokenVerify{Category: mfa, Token: verifyCode, Uuid: uuidMfa}
mfaVerifyBody := new(bytes.Buffer)
err = json.NewEncoder(mfaVerifyBody).Encode(mfaVerifyData)
if err != nil {
return errors.Wrap(err, "error encoding mfa verify req")
}
mfaVerifyReq, err := http.NewRequest("POST", mfaVerifyURL, mfaVerifyBody)
if err != nil {
return errors.Wrap(err, "error creating mfa verification request")
}
mfaVerifyReq.Header.Add("Content-Type", "application/json")
mfaVerifyReq.Header.Add("Accept", "application/json")
mfaVerifyReq.Header.Add("xsrf", string(xsrfToken))
res, err = oc.client.Do(mfaVerifyReq)
if err != nil {
return errors.Wrap(err, "error verifying mfa to EAA ")
}
body, err = ioutil.ReadAll(res.Body)
if err != nil {
return errors.Wrap(err, "error retrieving mfa verify response")
}
mfaResStatus = gjson.GetBytes(body, "status").String()
if mfaResStatus != "200" {
return errors.Wrap(err, "Unable to verify mfa token")
}
return nil
case IdentifierDuoMfa:
duoSettings := fmt.Sprintf("mfa.settings.%s.0", mfa)
duoHost := gjson.GetBytes(mfaSettingData, duoSettings).Get("duo_host").String()
duoSignature := gjson.GetBytes(mfaSettingData, duoSettings).Get("token").String()
duoSignatures := strings.Split(duoSignature, ":")
//duoSignatures[0] = TX
//duoSignatures[1] = APP
// initiate duo mfa to get sid
duoSubmitURL := fmt.Sprintf("https://%s/frame/web/v1/auth", duoHost)
duoForm := url.Values{}
duoForm.Add("parent", fmt.Sprintf("https://%s/#/token", akamaiOrgHost))
duoForm.Add("java_version", "")
duoForm.Add("java_version", "")
duoForm.Add("flash_version", "")
duoForm.Add("screen_resolution_width", "1440")
duoForm.Add("screen_resolution_height", "900")
duoForm.Add("color_depth", "24")
req, err := http.NewRequest("POST", duoSubmitURL, strings.NewReader(duoForm.Encode()))
if err != nil {
return errors.Wrap(err, "error building duo request")
}
q := req.URL.Query()
q.Add("tx", duoSignatures[0])
req.URL.RawQuery = q.Encode()
req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
res, err = oc.client.Do(req)
if err != nil {
return errors.Wrap(err, "error sending duo request")
}
//try to extract sid
doc, err := goquery.NewDocumentFromReader(res.Body)
if err != nil {
return errors.Wrap(err, "error parsing document from duo")
}
duoSID, ok := doc.Find("input[name=\"sid\"]").Attr("value")
if !ok {
return errors.Wrap(err, "unable to locate sid in duo response")
}
duoSID = html.UnescapeString(duoSID)
//prompt for mfa type
//only supporting push or passcode for now
var token string
var duoMfaOptions = []string{
"Duo Push",
"Passcode",
}
duoMfaOption := 0
if loginDetails.DuoMFAOption == "Duo Push" {
duoMfaOption = 0
} else if loginDetails.DuoMFAOption == "Passcode" {
duoMfaOption = 1
} else {
duoMfaOption = prompter.Choose("Select a DUO MFA Option", duoMfaOptions)
}
if duoMfaOptions[duoMfaOption] == "Passcode" {
//get users DUO MFA Token
token = prompter.StringRequired("Enter passcode")
}
// send mfa auth request
duoSubmitURL = fmt.Sprintf("https://%s/frame/prompt", duoHost)
duoForm = url.Values{}
duoForm.Add("sid", duoSID)
duoForm.Add("device", "phone1")
duoForm.Add("factor", duoMfaOptions[duoMfaOption])
duoForm.Add("out_of_date", "false")
if duoMfaOptions[duoMfaOption] == "Passcode" {
duoForm.Add("passcode", token)
}
req, err = http.NewRequest("POST", duoSubmitURL, strings.NewReader(duoForm.Encode()))
if err != nil {
return errors.Wrap(err, "error building duo prompt request")
}
req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
res, err = oc.client.Do(req)
if err != nil {
return errors.Wrap(err, "error retrieving duo prompt request")
}
body, err = ioutil.ReadAll(res.Body)
if err != nil {
return errors.Wrap(err, "error retrieving duo prompt response")
}
resp := string(body)
duoTxStat := gjson.Get(resp, "stat").String()
duoTxID := gjson.Get(resp, "response.txid").String()
if duoTxStat != "OK" {
return errors.Wrap(err, "error authenticating duo mfa device")
}
// get duo cookie
duoSubmitURL = fmt.Sprintf("https://%s/frame/status", duoHost)
duoForm = url.Values{}
duoForm.Add("sid", duoSID)
duoForm.Add("txid", duoTxID)
req, err = http.NewRequest("POST", duoSubmitURL, strings.NewReader(duoForm.Encode()))
if err != nil {
return errors.Wrap(err, "error building duo status request")
}
req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
res, err = oc.client.Do(req)
if err != nil {
return errors.Wrap(err, "error sending duo status request")
}
body, err = ioutil.ReadAll(res.Body)
if err != nil {
return errors.Wrap(err, "error retrieving duo status response")
}
resp = string(body)
duoTxResult := gjson.Get(resp, "response.result").String()
duoResultURL := gjson.Get(resp, "response.result_url").String()
log.Println(gjson.Get(resp, "response.status").String())
if duoTxResult != "SUCCESS" {
//poll as this is likely a push request
for {
time.Sleep(3 * time.Second)
req, err = http.NewRequest("POST", duoSubmitURL, strings.NewReader(duoForm.Encode()))
if err != nil {
return errors.Wrap(err, "error building authentication request")
}
req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
res, err = oc.client.Do(req)
if err != nil {
return errors.Wrap(err, "error retrieving verify response")
}
body, err = ioutil.ReadAll(res.Body)
if err != nil {
return errors.Wrap(err, "error retrieving body from response")
}
resp := string(body)
duoTxResult = gjson.Get(resp, "response.result").String()
duoResultURL = gjson.Get(resp, "response.result_url").String()
log.Println(gjson.Get(resp, "response.status").String())
if duoTxResult == "FAILURE" {
return errors.Wrap(err, "failed to authenticate device")
}
if duoTxResult == "SUCCESS" {
break
}
}
}
duoRequestURL := fmt.Sprintf("https://%s%s", duoHost, duoResultURL)
req, err = http.NewRequest("POST", duoRequestURL, strings.NewReader(duoForm.Encode()))
if err != nil {
return errors.Wrap(err, "error constructing request object to result url")
}
req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
res, err = oc.client.Do(req)
if err != nil {
return errors.Wrap(err, "error retrieving duo result response")
}
body, err = ioutil.ReadAll(res.Body)
if err != nil {
return errors.Wrap(err, "duoResultSubmit: error retrieving body from response")
}
resp = string(body)
duoTxCookie := gjson.Get(resp, "response.cookie").String()
if duoTxCookie == "" {
return errors.Wrap(err, "duoResultSubmit: Unable to get response.cookie")
}
// callback to Akamai to verify
mfaVerifyURL := fmt.Sprintf("https://%s/api/v1/mfa/user/%s/token/verify", akamaiOrgHost, mfa)
mfaDuoSigResponse := fmt.Sprintf("%s:%s", duoTxCookie, duoSignatures[1])
mfaVerifyData := MfaTokenVerify{Category: mfa, Uuid: mfa,
DuoSigRequest: duoSignature, DuoSigResponse: mfaDuoSigResponse}
mfaVerifyBody := new(bytes.Buffer)
err = json.NewEncoder(mfaVerifyBody).Encode(mfaVerifyData)
if err != nil {
return errors.Wrap(err, "error encoding duo mfa verify req")
}
mfaVerifyReq, err := http.NewRequest("POST", mfaVerifyURL, mfaVerifyBody)
if err != nil {
return errors.Wrap(err, "error creating duo mfa verification request")
}
mfaVerifyReq.Header.Add("Content-Type", "application/json")
mfaVerifyReq.Header.Add("Accept", "application/json")
mfaVerifyReq.Header.Add("xsrf", string(xsrfToken))
res, err = oc.client.Do(mfaVerifyReq)
if err != nil {
return errors.Wrap(err, "error sending duo mfa request to EAA ")
}
body, err = ioutil.ReadAll(res.Body)
if err != nil {
return errors.Wrap(err, "error retrieving duo mfa response ")
}
mfaResStatus := gjson.GetBytes(body, "status").String()
if mfaResStatus != "200" {
return errors.Wrap(err, "Unable to verify mfa token")
}
return nil
}
return errors.New("no mfa options provided")
}