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token.go
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token.go
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package sec
import (
"fmt"
"github.com/go-jose/go-jose/v4"
"github.com/go-jose/go-jose/v4/jwt"
"github.com/metal-stack/metal-lib/auth"
"github.com/metal-stack/metal-lib/jwt/grp"
"github.com/metal-stack/security"
)
var signatureAlgorithms = []jose.SignatureAlgorithm{
jose.RS256,
jose.RS384,
jose.RS512,
jose.ES256,
jose.ES384,
jose.ES512,
jose.PS256,
jose.PS384,
jose.PS512,
jose.EdDSA,
}
// ParseTokenUnvalidated extracts information from the given jwt token without validating it
func (p *Plugin) ParseTokenUnvalidated(token string) (*security.User, *security.Claims, error) {
parsedClaims := &security.Claims{}
webToken, err := jwt.ParseSigned(token, signatureAlgorithms)
if err != nil {
return nil, nil, fmt.Errorf("error parsing token: %w", err)
}
err = webToken.UnsafeClaimsWithoutVerification(parsedClaims)
if err != nil {
return nil, nil, fmt.Errorf("error parsing token claims: %w", err)
}
user, err := p.ExtractUserProcessGroups(parsedClaims)
if err != nil {
return nil, nil, fmt.Errorf("error extracting user: %w", err)
}
return user, parsedClaims, nil
}
// ParseTokenUnvalidated extracts information from the given jwt token without validating it.
// FederatedClaims are optional and
// ResourceAccess are constructed from Roles and Groups claims.
func ParseTokenUnvalidatedUnfiltered(token string) (*security.User, *auth.Claims, error) {
parsedClaims := &auth.Claims{}
webToken, err := jwt.ParseSigned(token, signatureAlgorithms)
if err != nil {
return nil, nil, fmt.Errorf("error parsing token: %w", err)
}
err = webToken.UnsafeClaimsWithoutVerification(parsedClaims)
if err != nil {
return nil, nil, fmt.Errorf("error parsing token claims: %w", err)
}
// check federated claims
tenant := ""
var res []security.ResourceAccess
if parsedClaims.FederatedClaims != nil {
// "old" token with groups-claim
cid := parsedClaims.FederatedClaims["connector_id"]
if cid != "" {
tenant, _, err = grp.ParseConnectorId(cid)
if err == nil {
for _, g := range parsedClaims.Groups {
res = append(res, security.ResourceAccess(g))
}
}
}
} else {
// "new" token, add roles claims
for _, g := range parsedClaims.Roles {
res = append(res, security.ResourceAccess(g))
}
}
user := &security.User{
Issuer: parsedClaims.Issuer,
Subject: parsedClaims.Subject,
Name: parsedClaims.Username(),
EMail: parsedClaims.EMail,
Groups: res,
Tenant: tenant,
}
if err != nil {
return nil, nil, fmt.Errorf("error extracting user: %w", err)
}
return user, parsedClaims, nil
}