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signin.go
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signin.go
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package auth
import (
"crypto"
"crypto/rand"
"crypto/sha256"
"crypto/x509"
"encoding/base64"
"encoding/json"
"encoding/pem"
"errors"
"fmt"
"io/ioutil"
"github.com/daticahealth/cli/config"
"github.com/daticahealth/cli/models"
)
// Signin signs in a user and returns the representative user model. If an
// error occurs, nil is returned for the user and the error field is populated.
func (a *SAuth) Signin() (*models.User, error) {
// if we're already signed in with a valid session, don't sign in again
if user, err := a.Verify(); err == nil {
return user, nil
}
f := a.signInWithKey
if a.Settings.PrivateKeyPath == "" {
f = a.signInWithCredentials
}
signinResp, err := f()
if err != nil {
return nil, err
}
var user *models.User
if signinResp.MFAID != "" {
user, err = a.mfaSignin(signinResp.MFAID, signinResp.MFAPreferredMode)
if err != nil {
return nil, err
}
} else {
user = signinResp.toUser()
}
a.Settings.UsersID = user.UsersID
a.Settings.Email = user.Email
a.Settings.SessionToken = user.SessionToken
config.SaveSettings(a.Settings)
return user, nil
}
type signinResponse struct {
ID string `json:"id"`
Name string `json:"name"`
Email string `json:"email"`
SessionToken string `json:"sessionToken"`
MFAID string `json:"mfaID"`
MFAPreferredMode string `json:"mfaPreferredType"`
}
func (sr *signinResponse) toUser() *models.User {
return &models.User{
UsersID: sr.ID,
Email: sr.Email,
SessionToken: sr.SessionToken,
}
}
func (a *SAuth) signInWithCredentials() (*signinResponse, error) {
login := models.Login{
Identifier: a.Settings.Email,
Password: a.Settings.Password,
}
if a.Settings.Email == "" || a.Settings.Password == "" {
email, password, err := a.Prompts.EmailPassword(a.Settings.Email, a.Settings.Password)
if err != nil {
return nil, err
}
login = models.Login{
Identifier: email,
Password: password,
}
}
b, err := json.Marshal(login)
if err != nil {
return nil, err
}
headers := a.Settings.HTTPManager.GetHeaders(a.Settings.SessionToken, a.Settings.Version, a.Settings.Pod, a.Settings.UsersID)
resp, statusCode, err := a.Settings.HTTPManager.Post(b, fmt.Sprintf("%s%s/auth/signin", a.Settings.AuthHost, a.Settings.AuthHostVersion), headers)
if err != nil {
return nil, err
}
signinResp := &signinResponse{}
return signinResp, a.Settings.HTTPManager.ConvertResp(resp, statusCode, signinResp)
}
func (a *SAuth) signInWithKey() (*signinResponse, error) {
body := struct {
PublicKey string `json:"publicKey"`
Signature string `json:"signature"`
}{}
bytes, err := ioutil.ReadFile(a.Settings.PrivateKeyPath)
if err != nil {
return nil, err
}
block, _ := pem.Decode(bytes)
if block == nil {
return nil, errors.New("Private key is not PEM-encoded")
}
bytes = block.Bytes
if x509.IsEncryptedPEMBlock(block) {
passphrase := a.Prompts.KeyPassphrase(a.Settings.PrivateKeyPath)
bytes, err = x509.DecryptPEMBlock(block, []byte(passphrase))
if err != nil {
return nil, err
}
}
privateKey, err := x509.ParsePKCS1PrivateKey(bytes)
if err != nil {
return nil, err
}
publicKey, err := ioutil.ReadFile(a.Settings.PrivateKeyPath + ".pub")
if err != nil {
return nil, err
}
body.PublicKey = string(publicKey)
headers := a.Settings.HTTPManager.GetHeaders(a.Settings.SessionToken, a.Settings.Version, a.Settings.Pod, a.Settings.UsersID)
message := fmt.Sprintf("%s&%s", headers["X-Request-Nonce"][0], headers["X-Request-Timestamp"][0])
hashedMessage := sha256.Sum256([]byte(message))
signature, err := privateKey.Sign(rand.Reader, hashedMessage[:], crypto.SHA256)
if err != nil {
return nil, err
}
body.Signature = base64.StdEncoding.EncodeToString(signature)
b, err := json.Marshal(body)
if err != nil {
return nil, err
}
resp, statusCode, err := a.Settings.HTTPManager.Post(b, fmt.Sprintf("%s%s/auth/signin/key", a.Settings.AuthHost, a.Settings.AuthHostVersion), headers)
if err != nil {
return nil, err
}
signinResp := &signinResponse{}
return signinResp, a.Settings.HTTPManager.ConvertResp(resp, statusCode, signinResp)
}
func (a *SAuth) mfaSignin(mfaID string, preferredMode string) (*models.User, error) {
token := a.Prompts.OTP(preferredMode)
headers := a.Settings.HTTPManager.GetHeaders(a.Settings.SessionToken, a.Settings.Version, a.Settings.Pod, a.Settings.UsersID)
b, err := json.Marshal(struct {
OTP string `json:"otp"`
}{OTP: token})
if err != nil {
return nil, err
}
resp, statusCode, err := a.Settings.HTTPManager.Post(b, fmt.Sprintf("%s%s/auth/signin/mfa/%s", a.Settings.AuthHost, a.Settings.AuthHostVersion, mfaID), headers)
user := &models.User{}
err = a.Settings.HTTPManager.ConvertResp(resp, statusCode, user)
if err != nil {
return nil, err
}
return user, err
}
// Signout signs out a user by their session token.
func (a *SAuth) Signout() error {
headers := a.Settings.HTTPManager.GetHeaders(a.Settings.SessionToken, a.Settings.Version, a.Settings.Pod, a.Settings.UsersID)
resp, statusCode, err := a.Settings.HTTPManager.Delete(nil, fmt.Sprintf("%s%s/auth/signout", a.Settings.AuthHost, a.Settings.AuthHostVersion), headers)
if err != nil {
return err
}
return a.Settings.HTTPManager.ConvertResp(resp, statusCode, nil)
}
// Verify verifies if a given session token is still valid or not. If it is
// valid, the returned error will be nil.
func (a *SAuth) Verify() (*models.User, error) {
headers := a.Settings.HTTPManager.GetHeaders(a.Settings.SessionToken, a.Settings.Version, a.Settings.Pod, a.Settings.UsersID)
resp, statusCode, err := a.Settings.HTTPManager.Get(nil, fmt.Sprintf("%s%s/auth/verify", a.Settings.AuthHost, a.Settings.AuthHostVersion), headers)
if err != nil {
return nil, err
}
var user models.User
err = a.Settings.HTTPManager.ConvertResp(resp, statusCode, &user)
if err != nil {
return nil, err
}
a.Settings.UsersID = user.UsersID
user.SessionToken = a.Settings.SessionToken
return &user, nil
}