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https://github.com/zitadel/zitadel.git
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fa30a51cad
* fix: improve secret generation for apple idp
* remove accidental commit
* change exp time
* change exp time
* change exp time
* change exp time
(cherry picked from commit 6ab06aa249)
69 lines
1.8 KiB
Go
69 lines
1.8 KiB
Go
package apple
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import (
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"crypto/x509"
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"encoding/pem"
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"time"
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"github.com/go-jose/go-jose/v4"
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"github.com/zitadel/oidc/v3/pkg/crypto"
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openid "github.com/zitadel/oidc/v3/pkg/oidc"
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"github.com/zitadel/zitadel/internal/idp"
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"github.com/zitadel/zitadel/internal/idp/providers/oidc"
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)
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const (
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name = "Apple"
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issuer = "https://appleid.apple.com"
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)
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var _ idp.Provider = (*Provider)(nil)
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// Provider is the [idp.Provider] implementation for Apple
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type Provider struct {
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*oidc.Provider
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}
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func New(clientID, teamID, keyID, callbackURL string, key []byte, scopes []string, options ...oidc.ProviderOpts) (*Provider, error) {
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secret, err := clientSecretFromPrivateKey(key, teamID, clientID, keyID)
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if err != nil {
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return nil, err
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}
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options = append(options, oidc.WithResponseMode("form_post"))
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rp, err := oidc.New(name, issuer, clientID, secret, callbackURL, scopes, oidc.DefaultMapper, options...)
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if err != nil {
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return nil, err
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}
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return &Provider{
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Provider: rp,
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}, nil
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}
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// clientSecretFromPrivateKey uses the private key to create and sign a JWT, which has to be used as client_secret at Apple.
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func clientSecretFromPrivateKey(key []byte, teamID, clientID, keyID string) (string, error) {
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block, _ := pem.Decode(key)
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b := block.Bytes
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pk, err := x509.ParsePKCS8PrivateKey(b)
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if err != nil {
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return "", err
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}
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signingKey := jose.SigningKey{
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Algorithm: jose.ES256,
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Key: &jose.JSONWebKey{Key: pk, KeyID: keyID},
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}
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signer, err := jose.NewSigner(signingKey, &jose.SignerOptions{})
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if err != nil {
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return "", err
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}
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iat := time.Now().Add(-2 * time.Second)
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exp := iat.Add(time.Hour)
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return crypto.Sign(&openid.JWTTokenRequest{
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Issuer: teamID,
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Subject: clientID,
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Audience: []string{issuer},
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ExpiresAt: openid.FromTime(exp),
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IssuedAt: openid.FromTime(iat),
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}, signer)
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}
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