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Add initial support for ssh templates on OIDC.

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This commit is contained in:
Mariano Cano 2020-07-27 17:47:52 -07:00
parent c2dc76550c
commit 715eb4eacc
1 changed files with 26 additions and 22 deletions
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24
authority/provisioner/oidc.go
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@ -13,6 +13,7 @@ import (
"github.com/pkg/errors"
"github.com/smallstep/certificates/errs"
"github.com/smallstep/certificates/sshutil"
"github.com/smallstep/certificates/x509util"
"github.com/smallstep/cli/jose"
)
@ -65,6 +66,7 @@ type OIDC struct {
ListenAddress string `json:"listenAddress,omitempty"`
Claims *Claims `json:"claims,omitempty"`
Options *Options `json:"options,omitempty"`
SSHOptions *SSHOptions `json:"sshOptions,omitempty"`
configuration openIDConfiguration
keyStore *keyStore
claimer *Claimer
@ -369,10 +371,6 @@ func (o *OIDC) AuthorizeSSHSign(ctx context.Context, token string) ([]SignOption
if claims.Email == "" {
return nil, errs.Unauthorized("oidc.AuthorizeSSHSign: failed to validate oidc token payload: email not found")
}
signOptions := []SignOption{
// set the key id to the token email
sshCertKeyIDModifier(claims.Email),
}
// Get the identity using either the default identityFunc or one injected
// externally.
@ -385,6 +383,18 @@ func (o *OIDC) AuthorizeSSHSign(ctx context.Context, token string) ([]SignOption
Principals: iden.Usernames,
}
// Certificate templates.
data := sshutil.CreateTemplateData(sshutil.UserCert, claims.Email, iden.Usernames)
if v, err := unsafeParseSigned(token); err == nil {
data.SetToken(v)
}
templateOptions, err := TemplateSSHOptions(o.SSHOptions, data)
if err != nil {
return nil, errs.Wrap(http.StatusInternalServerError, err, "jwk.AuthorizeSign")
}
signOptions := []SignOption{templateOptions}
// Admin users can use any principal, and can sign user and host certificates.
// Non-admin users can only use principals returned by the identityFunc, and
// can only sign user certificates.
@ -392,13 +402,7 @@ func (o *OIDC) AuthorizeSSHSign(ctx context.Context, token string) ([]SignOption
signOptions = append(signOptions, sshCertOptionsValidator(defaults))
}
// Default to a user certificate with usernames as principals if those options
// are not set.
signOptions = append(signOptions, sshCertDefaultsModifier(defaults))
return append(signOptions,
// Set the default extensions
&sshDefaultExtensionModifier{},
// Set the validity bounds if not set.
&sshDefaultDuration{o.claimer},
// Validate public key