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package validator
import (
"crypto"
"crypto/ecdsa"
"crypto/ed25519"
"crypto/elliptic"
"crypto/rsa"
"fmt"
"strings"
"golang.org/x/net/publicsuffix"
"gopkg.in/square/go-jose.v2"
"github.com/authelia/authelia/v4/internal/configuration/schema"
"github.com/authelia/authelia/v4/internal/oidc"
"github.com/authelia/authelia/v4/internal/utils"
)
func isCookieDomainAPublicSuffix(domain string) (valid bool) {
var suffix string
suffix, _ = publicsuffix.PublicSuffix(domain)
return len(strings.TrimLeft(domain, ".")) == len(suffix)
}
func strJoinOr(items []string) string {
return strJoinComma("or", items)
}
func strJoinAnd(items []string) string {
return strJoinComma("and", items)
}
func strJoinComma(word string, items []string) string {
if word == "" {
return buildJoinedString(",", "", "'", items)
}
return buildJoinedString(",", word, "'", items)
}
func buildJoinedString(sep, sepFinal, quote string, items []string) string {
n := len(items)
if n == 0 {
return ""
}
b := &strings.Builder{}
for i := 0; i < n; i++ {
if quote != "" {
b.WriteString(quote)
}
b.WriteString(items[i])
if quote != "" {
b.WriteString(quote)
}
if i == (n - 1) {
continue
}
if sep != "" {
if sepFinal == "" || n != 2 {
b.WriteString(sep)
}
b.WriteString(" ")
}
if sepFinal != "" && i == (n-2) {
b.WriteString(strings.Trim(sepFinal, " "))
b.WriteString(" ")
}
}
return b.String()
}
func validateListNotAllowed(values, filter []string) (invalid []string) {
for _, value := range values {
if utils.IsStringInSlice(value, filter) {
invalid = append(invalid, value)
}
}
return invalid
}
func validateList(values, valid []string, chkDuplicate bool) (invalid, duplicates []string) { //nolint:unparam
chkValid := len(valid) != 0
for i, value := range values {
if chkValid {
if !utils.IsStringInSlice(value, valid) {
invalid = append(invalid, value)
// Skip checking duplicates for invalid values.
continue
}
}
if chkDuplicate {
for j, valueAlt := range values {
if i == j {
continue
}
if value != valueAlt {
continue
}
if utils.IsStringInSlice(value, duplicates) {
continue
}
duplicates = append(duplicates, value)
}
}
}
return
}
type JWKProperties struct {
Use string
Algorithm string
Bits int
Curve elliptic.Curve
}
func schemaJWKGetProperties(jwk schema.JWK) (properties *JWKProperties, err error) {
switch key := jwk.Key.(type) {
case nil:
return nil, nil
case ed25519.PrivateKey, ed25519.PublicKey:
return &JWKProperties{}, nil
case *rsa.PrivateKey:
if key.PublicKey.N == nil {
return &JWKProperties{oidc.KeyUseSignature, oidc.SigningAlgRSAUsingSHA256, 0, nil}, nil
}
return &JWKProperties{oidc.KeyUseSignature, oidc.SigningAlgRSAUsingSHA256, key.Size(), nil}, nil
case *rsa.PublicKey:
if key.N == nil {
return &JWKProperties{oidc.KeyUseSignature, oidc.SigningAlgRSAUsingSHA256, 0, nil}, nil
}
return &JWKProperties{oidc.KeyUseSignature, oidc.SigningAlgRSAUsingSHA256, key.Size(), nil}, nil
case *ecdsa.PublicKey:
switch key.Curve {
case elliptic.P256():
return &JWKProperties{oidc.KeyUseSignature, oidc.SigningAlgECDSAUsingP256AndSHA256, -1, key.Curve}, nil
case elliptic.P384():
return &JWKProperties{oidc.KeyUseSignature, oidc.SigningAlgECDSAUsingP384AndSHA384, -1, key.Curve}, nil
case elliptic.P521():
return &JWKProperties{oidc.KeyUseSignature, oidc.SigningAlgECDSAUsingP521AndSHA512, -1, key.Curve}, nil
default:
return &JWKProperties{oidc.KeyUseSignature, "", -1, key.Curve}, nil
}
case *ecdsa.PrivateKey:
switch key.Curve {
case elliptic.P256():
return &JWKProperties{oidc.KeyUseSignature, oidc.SigningAlgECDSAUsingP256AndSHA256, -1, key.Curve}, nil
case elliptic.P384():
return &JWKProperties{oidc.KeyUseSignature, oidc.SigningAlgECDSAUsingP384AndSHA384, -1, key.Curve}, nil
case elliptic.P521():
return &JWKProperties{oidc.KeyUseSignature, oidc.SigningAlgECDSAUsingP521AndSHA512, -1, key.Curve}, nil
default:
return &JWKProperties{oidc.KeyUseSignature, "", -1, key.Curve}, nil
}
default:
return nil, fmt.Errorf("the key type '%T' is unknown or not valid for the configuration", key)
}
}
func jwkCalculateThumbprint(key schema.CryptographicKey) (thumbprintStr string, err error) {
j := jose.JSONWebKey{}
switch k := key.(type) {
case schema.CryptographicPrivateKey:
j.Key = k.Public()
case *rsa.PublicKey, *ecdsa.PublicKey, ed25519.PublicKey:
j.Key = k
default:
return "", nil
}
var thumbprint []byte
if thumbprint, err = j.Thumbprint(crypto.SHA256); err != nil {
return "", err
}
return fmt.Sprintf("%x", thumbprint)[:6], nil
}
func getResponseObjectAlgFromKID(config *schema.IdentityProvidersOpenIDConnect, kid, alg string) string {
for _, jwk := range config.IssuerPrivateKeys {
if kid == jwk.KeyID {
return jwk.Algorithm
}
}
return alg
}
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