certificates/authority/export.go

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package authority
import (
"encoding/json"
"io/ioutil"
"net/url"
"path/filepath"
"strings"
"github.com/pkg/errors"
"github.com/smallstep/certificates/authority/provisioner"
"go.step.sm/cli-utils/config"
"go.step.sm/linkedca"
"google.golang.org/protobuf/types/known/structpb"
)
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// Export creates a linkedca configuration form the current ca.json and loaded
// authorities.
//
// Note that export will not export neither the pki password nor the certificate
// issuer password.
func (a *Authority) Export() (c *linkedca.Configuration, err error) {
// Recover from panics
defer func() {
if r := recover(); r != nil {
err = r.(error)
}
}()
files := make(map[string][]byte)
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// The exported configuration should not include the password in it.
c = &linkedca.Configuration{
Version: "1.0",
Root: mustReadFilesOrURIs(a.config.Root, files),
FederatedRoots: mustReadFilesOrURIs(a.config.FederatedRoots, files),
Intermediate: mustReadFileOrURI(a.config.IntermediateCert, files),
IntermediateKey: mustReadFileOrURI(a.config.IntermediateKey, files),
Address: a.config.Address,
InsecureAddress: a.config.InsecureAddress,
DnsNames: a.config.DNSNames,
Db: mustMarshalToStruct(a.config.DB),
Logger: mustMarshalToStruct(a.config.Logger),
Monitoring: mustMarshalToStruct(a.config.Monitoring),
Authority: &linkedca.Authority{
Id: a.config.AuthorityConfig.AuthorityID,
EnableAdmin: a.config.AuthorityConfig.EnableAdmin,
DisableIssuedAtCheck: a.config.AuthorityConfig.DisableIssuedAtCheck,
Backdate: mustDuration(a.config.AuthorityConfig.Backdate),
},
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Files: files,
}
// SSH
if v := a.config.SSH; v != nil {
c.Ssh = &linkedca.SSH{
HostKey: mustReadFileOrURI(v.HostKey, files),
UserKey: mustReadFileOrURI(v.UserKey, files),
AddUserPrincipal: v.AddUserPrincipal,
AddUserCommand: v.AddUserCommand,
}
for _, k := range v.Keys {
typ, ok := linkedca.SSHPublicKey_Type_value[strings.ToUpper(k.Type)]
if !ok {
return nil, errors.Errorf("unsupported ssh key type %s", k.Type)
}
c.Ssh.Keys = append(c.Ssh.Keys, &linkedca.SSHPublicKey{
Type: linkedca.SSHPublicKey_Type(typ),
Federated: k.Federated,
Key: mustMarshalToStruct(k),
})
}
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if b := v.Bastion; b != nil {
c.Ssh.Bastion = &linkedca.Bastion{
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Hostname: b.Hostname,
User: b.User,
Port: b.Port,
Command: b.Command,
Flags: b.Flags,
}
}
}
// KMS
if v := a.config.KMS; v != nil {
var typ int32
var ok bool
if v.Type == "" {
typ = int32(linkedca.KMS_SOFTKMS)
} else {
typ, ok = linkedca.KMS_Type_value[strings.ToUpper(v.Type)]
if !ok {
return nil, errors.Errorf("unsupported kms type %s", v.Type)
}
}
c.Kms = &linkedca.KMS{
Type: linkedca.KMS_Type(typ),
CredentialsFile: v.CredentialsFile,
Uri: v.URI,
Pin: v.Pin,
ManagementKey: v.ManagementKey,
Region: v.Region,
Profile: v.Profile,
}
}
// Authority
// cas options
if v := a.config.AuthorityConfig.Options; v != nil {
c.Authority.Type = 0
c.Authority.CertificateAuthority = v.CertificateAuthority
c.Authority.CertificateAuthorityFingerprint = v.CertificateAuthorityFingerprint
c.Authority.CredentialsFile = v.CredentialsFile
if iss := v.CertificateIssuer; iss != nil {
typ, ok := linkedca.CertificateIssuer_Type_value[strings.ToUpper(iss.Type)]
if !ok {
return nil, errors.Errorf("unknown certificate issuer type %s", iss.Type)
}
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// The exporte certificate issuer should not include the password.
c.Authority.CertificateIssuer = &linkedca.CertificateIssuer{
Type: linkedca.CertificateIssuer_Type(typ),
Provisioner: iss.Provisioner,
Certificate: mustReadFileOrURI(iss.Certificate, files),
Key: mustReadFileOrURI(iss.Key, files),
}
}
}
// admins
for {
list, cursor := a.admins.Find("", 100)
c.Authority.Admins = append(c.Authority.Admins, list...)
if cursor == "" {
break
}
}
// provisioners
for {
list, cursor := a.provisioners.Find("", 100)
for _, p := range list {
lp, err := ProvisionerToLinkedca(p)
if err != nil {
return nil, err
}
c.Authority.Provisioners = append(c.Authority.Provisioners, lp)
}
if cursor == "" {
break
}
}
// global claims
c.Authority.Claims = claimsToLinkedca(a.config.AuthorityConfig.Claims)
// Distiguised names template
if v := a.config.AuthorityConfig.Template; v != nil {
c.Authority.Template = &linkedca.DistinguishedName{
Country: v.Country,
Organization: v.Organization,
OrganizationalUnit: v.OrganizationalUnit,
Locality: v.Locality,
Province: v.Province,
StreetAddress: v.StreetAddress,
SerialNumber: v.SerialNumber,
CommonName: v.CommonName,
}
}
// TLS
if v := a.config.TLS; v != nil {
c.Tls = &linkedca.TLS{
MinVersion: v.MinVersion.String(),
MaxVersion: v.MaxVersion.String(),
Renegotiation: v.Renegotiation,
}
for _, cs := range v.CipherSuites.Value() {
c.Tls.CipherSuites = append(c.Tls.CipherSuites, linkedca.TLS_CiperSuite(cs))
}
}
// Templates
if v := a.config.Templates; v != nil {
c.Templates = &linkedca.ConfigTemplates{
Ssh: &linkedca.SSHConfigTemplate{},
Data: mustMarshalToStruct(v.Data),
}
// Remove automatically loaded vars
if c.Templates.Data != nil && c.Templates.Data.Fields != nil {
delete(c.Templates.Data.Fields, "Step")
}
for _, t := range v.SSH.Host {
typ, ok := linkedca.ConfigTemplate_Type_value[strings.ToUpper(string(t.Type))]
if !ok {
return nil, errors.Errorf("unsupported template type %s", t.Type)
}
c.Templates.Ssh.Hosts = append(c.Templates.Ssh.Hosts, &linkedca.ConfigTemplate{
Type: linkedca.ConfigTemplate_Type(typ),
Name: t.Name,
Template: mustReadFileOrURI(t.TemplatePath, files),
Path: t.Path,
Comment: t.Comment,
Requires: t.RequiredData,
Content: t.Content,
})
}
for _, t := range v.SSH.User {
typ, ok := linkedca.ConfigTemplate_Type_value[strings.ToUpper(string(t.Type))]
if !ok {
return nil, errors.Errorf("unsupported template type %s", t.Type)
}
c.Templates.Ssh.Users = append(c.Templates.Ssh.Users, &linkedca.ConfigTemplate{
Type: linkedca.ConfigTemplate_Type(typ),
Name: t.Name,
Template: mustReadFileOrURI(t.TemplatePath, files),
Path: t.Path,
Comment: t.Comment,
Requires: t.RequiredData,
Content: t.Content,
})
}
}
return c, nil
}
func mustDuration(d *provisioner.Duration) string {
if d == nil || d.Duration == 0 {
return ""
}
return d.String()
}
func mustMarshalToStruct(v interface{}) *structpb.Struct {
b, err := json.Marshal(v)
if err != nil {
panic(errors.Wrapf(err, "error marshaling %T", v))
}
var r *structpb.Struct
if err := json.Unmarshal(b, &r); err != nil {
panic(errors.Wrapf(err, "error unmarshaling %T", v))
}
return r
}
func mustReadFileOrURI(fn string, m map[string][]byte) string {
if fn == "" {
return ""
}
stepPath := filepath.ToSlash(config.StepPath())
if !strings.HasSuffix(stepPath, "/") {
stepPath += "/"
}
fn = strings.TrimPrefix(filepath.ToSlash(fn), stepPath)
ok, err := isFilename(fn)
if err != nil {
panic(err)
}
if ok {
b, err := ioutil.ReadFile(config.StepAbs(fn))
if err != nil {
panic(errors.Wrapf(err, "error reading %s", fn))
}
m[fn] = b
return fn
}
return fn
}
func mustReadFilesOrURIs(fns []string, m map[string][]byte) []string {
var result []string
for _, fn := range fns {
result = append(result, mustReadFileOrURI(fn, m))
}
return result
}
func isFilename(fn string) (bool, error) {
u, err := url.Parse(fn)
if err != nil {
return false, errors.Wrapf(err, "error parsing %s", fn)
}
return u.Scheme == "" || u.Scheme == "file", nil
}