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okta_oauth.go
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okta_oauth.go
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package social
import (
"encoding/json"
"errors"
"fmt"
"net/http"
"github.com/grafana/grafana/pkg/models"
"golang.org/x/oauth2"
"gopkg.in/square/go-jose.v2/jwt"
)
type SocialOkta struct {
*SocialBase
apiUrl string
allowedGroups []string
}
type OktaUserInfoJson struct {
Name string `json:"name"`
DisplayName string `json:"display_name"`
Login string `json:"login"`
Username string `json:"username"`
Email string `json:"email"`
Upn string `json:"upn"`
Attributes map[string][]string `json:"attributes"`
Groups []string `json:"groups"`
rawJSON []byte
}
type OktaClaims struct {
ID string `json:"sub"`
Email string `json:"email"`
PreferredUsername string `json:"preferred_username"`
Name string `json:"name"`
}
func (claims *OktaClaims) extractEmail() string {
if claims.Email == "" && claims.PreferredUsername != "" {
return claims.PreferredUsername
}
return claims.Email
}
func (s *SocialOkta) Type() int {
return int(models.OKTA)
}
func (s *SocialOkta) GetCustomAuthParams() []oauth2.AuthCodeOption {
return []oauth2.AuthCodeOption{}
}
func (s *SocialOkta) UserInfo(client *http.Client, token *oauth2.Token) (*BasicUserInfo, error) {
idToken := token.Extra("id_token")
if idToken == nil {
return nil, fmt.Errorf("no id_token found")
}
parsedToken, err := jwt.ParseSigned(idToken.(string))
if err != nil {
return nil, fmt.Errorf("error parsing id token: %w", err)
}
var claims OktaClaims
if err := parsedToken.UnsafeClaimsWithoutVerification(&claims); err != nil {
return nil, fmt.Errorf("error getting claims from id token: %w", err)
}
email := claims.extractEmail()
if email == "" {
return nil, errors.New("error getting user info: no email found in access token")
}
var data OktaUserInfoJson
err = s.extractAPI(&data, client)
if err != nil {
return nil, err
}
groups := s.GetGroups(&data)
if !s.IsGroupMember(groups) {
return nil, errMissingGroupMembership
}
role, grafanaAdmin := s.extractRoleAndAdmin(data.rawJSON, groups, true)
if s.roleAttributeStrict && !role.IsValid() {
return nil, &InvalidBasicRoleError{idP: "Okta", assignedRole: string(role)}
}
var isGrafanaAdmin *bool = nil
if s.allowAssignGrafanaAdmin {
isGrafanaAdmin = &grafanaAdmin
}
return &BasicUserInfo{
Id: claims.ID,
Name: claims.Name,
Email: email,
Login: email,
Role: role,
IsGrafanaAdmin: isGrafanaAdmin,
Groups: groups,
}, nil
}
func (s *SocialOkta) extractAPI(data *OktaUserInfoJson, client *http.Client) error {
rawUserInfoResponse, err := s.httpGet(client, s.apiUrl)
if err != nil {
s.log.Debug("Error getting user info response", "url", s.apiUrl, "error", err)
return fmt.Errorf("error getting user info response: %w", err)
}
data.rawJSON = rawUserInfoResponse.Body
err = json.Unmarshal(data.rawJSON, data)
if err != nil {
s.log.Debug("Error decoding user info response", "raw_json", data.rawJSON, "error", err)
data.rawJSON = []byte{}
return fmt.Errorf("error decoding user info response: %w", err)
}
s.log.Debug("Received user info response", "raw_json", string(data.rawJSON), "data", data)
return nil
}
func (s *SocialOkta) GetGroups(data *OktaUserInfoJson) []string {
groups := make([]string, 0)
if len(data.Groups) > 0 {
groups = data.Groups
}
return groups
}
func (s *SocialOkta) IsGroupMember(groups []string) bool {
if len(s.allowedGroups) == 0 {
return true
}
for _, allowedGroup := range s.allowedGroups {
for _, group := range groups {
if group == allowedGroup {
return true
}
}
}
return false
}