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claims.go
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/
claims.go
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/*
* Copyright (c) 2018. Abstrium SAS <team (at) pydio.com>
* This file is part of Pydio Cells.
*
* Pydio Cells is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Pydio Cells is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with Pydio Cells. If not, see <http://www.gnu.org/licenses/>.
*
* The latest code can be found at <https://pydio.com>.
*/
// Package claim wraps the JWT claims with util functions
package claim
import (
"encoding/base64"
"strings"
"time"
"github.com/coreos/go-oidc/jose"
"github.com/golang/protobuf/proto"
)
const (
ContextKey = "pydio-claims"
)
type Claims struct {
ClientApp interface{} `json:"aud" mapstructure:"aud"`
Issuer string `json:"iss" mapstructure:"iss"`
SessionID string `json:"sid" mapstructure:"sid"`
Subject string `json:"sub" mapstructure:"sub"`
Nonce string `json:"nonce" mapstructure:"nonce"`
Name string `json:"name" mapstructure:"name"`
Email string `json:"email" mapstructure:"email"`
Profile string `json:"profile" mapstructure:"profile"`
Verified bool `json:"email_verified" mapstructure:"email_verified"`
Roles string `json:"roles" mapstructure:"roles"`
Expiry time.Time `json:"expiry" mapstructure:"expiry"`
AuthSource string `json:"authSource" mapstructure:"authSource"`
DisplayName string `json:"displayName" mapstructure:"displayName"`
GroupPath string `json:"groupPath" mapstructure:"groupPath"`
}
// Decode Subject field of the claims
func (c *Claims) DecodeSubject() (*IDTokenSubject, error) {
sub := c.Subject
data, err := base64.RawURLEncoding.DecodeString(sub)
if err != nil {
return nil, err
}
var subject IDTokenSubject
if err := proto.Unmarshal(data, &subject); err != nil {
return nil, err
} else {
return &subject, nil
}
}
func (c *Claims) GetClientApp() string {
switch v := c.ClientApp.(type) {
case string:
return v
case []string:
return strings.Join(v, ",")
default:
return "unknown client app"
}
}
// UserNameFromIDToken parses an IDToken and extract the "name" field from the claims
func UserNameFromIDToken(token string) string {
jwt, e := jose.ParseJWT(token)
if e != nil {
return ""
}
claims, e := jwt.Claims()
if e != nil {
return ""
}
if v, ok := claims["name"]; ok {
return v.(string)
}
return ""
}
// IDTokenSubject is the representation of the format of subject we are using
type IDTokenSubject struct {
// UserId specific to cells
UserId string `protobuf:"bytes,1,opt,name=user_id,json=userId" json:"user_id,omitempty"`
// ConnId defines the connector chosen to login
ConnId string `protobuf:"bytes,2,opt,name=conn_id,json=connId" json:"conn_id,omitempty"`
}
// Reset the value to empty
func (s *IDTokenSubject) Reset() { *s = IDTokenSubject{} }
// String representation
func (s *IDTokenSubject) String() string { return proto.CompactTextString(s) }
// ProtoMessage is used by the proto.Message interface
func (*IDTokenSubject) ProtoMessage() {}
// Encode the content of the ID Token Subject
func (s *IDTokenSubject) Encode() ([]byte, error) {
data, err := proto.Marshal(s)
if err != nil {
return nil, err
}
buf := make([]byte, base64.RawURLEncoding.EncodedLen(len(data)))
base64.RawURLEncoding.Encode(buf, data)
return buf, nil
}