Add types for certificate flexibility.

This is a first implementation, not the final one.
This commit is contained in:
Mariano Cano 2020-06-30 19:19:52 -07:00
parent c1e6c0285a
commit 2556b57906
6 changed files with 822 additions and 0 deletions

263
x509util/certificate.go Normal file
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package x509util
import (
"crypto/x509"
"crypto/x509/pkix"
"encoding/json"
"math/big"
"strings"
"github.com/pkg/errors"
)
type Certificate struct {
Version int `json:"version"`
Subject Subject `json:"subject"`
SerialNumber SerialNumber `json:"serialNumber"`
DNSNames MultiString `json:"dnsNames"`
EmailAddresses MultiString `json:"emailAddresses"`
IPAddresses MultiIP `json:"ipAddresses"`
URIs MultiURL `json:"uris"`
Extensions []Extension `json:"extensions"`
KeyUsage KeyUsage `json:"keyUsage"`
ExtKeyUsage ExtKeyUsage `json:"extKeyUsage"`
SubjectKeyID SubjectKeyID `json:"subjectKeyId"`
AuthorityKeyID AuthorityKeyID `json:"authorityKeyId"`
OCSPServer OCSPServer `json:"ocspServer"`
IssuingCertificateURL IssuingCertificateURL `json:"issuingCertificateURL"`
CRLDistributionPoints CRLDistributionPoints `json:"crlDistributionPoints"`
PolicyIdentifiers PolicyIdentifiers `json:"policyIdentifiers"`
BasicConstraints *BasicConstraints `json:"basicConstraints"`
NameConstaints *NameConstraints `json:"nameConstraints"`
SignatureAlgorithm SignatureAlgorithm `json:"signatureAlgorithm"`
PublicKeyAlgorithm x509.PublicKeyAlgorithm `json:"-"`
PublicKey interface{} `json:"-"`
}
func NewCertificate(cr *x509.CertificateRequest, opts ...Option) (*Certificate, error) {
if err := cr.CheckSignature(); err != nil {
return nil, errors.Wrap(err, "error validating certificate request")
}
o, err := new(Options).apply(opts)
if err != nil {
return nil, err
}
// If no template use only the certificate request.
if o.CertBuffer == nil {
return newCertificateRequest(cr).GetCertificate(), nil
}
// With templates
var cert Certificate
if err := json.NewDecoder(o.CertBuffer).Decode(&cert); err != nil {
return nil, errors.Wrap(err, "error unmarshaling certificate")
}
// Complete with certificate request
cert.PublicKey = cr.PublicKey
cert.PublicKeyAlgorithm = cr.PublicKeyAlgorithm
return &cert, nil
}
func (c *Certificate) GetCertificate() *x509.Certificate {
cert := new(x509.Certificate)
// Unparsed data
cert.PublicKey = c.PublicKey
cert.PublicKeyAlgorithm = c.PublicKeyAlgorithm
// SANs are directly converted.
cert.DNSNames = c.DNSNames
cert.EmailAddresses = c.EmailAddresses
cert.IPAddresses = c.IPAddresses
cert.URIs = c.URIs
// Subject.
c.Subject.Set(cert)
// Defined extensions.
c.KeyUsage.Set(cert)
c.ExtKeyUsage.Set(cert)
c.SubjectKeyID.Set(cert)
c.AuthorityKeyID.Set(cert)
c.OCSPServer.Set(cert)
c.IssuingCertificateURL.Set(cert)
c.PolicyIdentifiers.Set(cert)
if c.BasicConstraints != nil {
c.BasicConstraints.Set(cert)
}
if c.NameConstaints != nil {
c.NameConstaints.Set(cert)
}
// Custom Extensions.
for _, e := range c.Extensions {
e.Set(cert)
}
// Others.
c.SerialNumber.Set(cert)
c.SignatureAlgorithm.Set(cert)
return cert
}
// Subject is the JSON representation of the X509 subject field.
type Subject struct {
Country MultiString `json:"country"`
Organization MultiString `json:"organization"`
OrganizationalUnit MultiString `json:"organizationUnit"`
Locality MultiString `json:"locality"`
Province MultiString `json:"province"`
StreetAddress MultiString `json:"streetAddress"`
PostalCode MultiString `json:"postalCode"`
SerialNumber string `json:"serialNumber"`
CommonName string `json:"commonName"`
}
func newSubject(n pkix.Name) Subject {
return Subject{
Country: n.Country,
Organization: n.Organization,
OrganizationalUnit: n.OrganizationalUnit,
Locality: n.Locality,
Province: n.Province,
StreetAddress: n.StreetAddress,
PostalCode: n.PostalCode,
SerialNumber: n.SerialNumber,
CommonName: n.CommonName,
}
}
// Set sets the subject in the given certificate.
func (s Subject) Set(c *x509.Certificate) {
c.Subject = pkix.Name{
Country: s.Country,
Organization: s.Organization,
OrganizationalUnit: s.OrganizationalUnit,
Locality: s.Locality,
Province: s.Province,
StreetAddress: s.StreetAddress,
PostalCode: s.PostalCode,
SerialNumber: s.SerialNumber,
CommonName: s.CommonName,
}
}
// UnmarshalJSON implements the json.Unmarshal interface and unmarshals a JSON
// object in the Subject struct or a string as just the subject common name.
func (s *Subject) UnmarshalJSON(data []byte) error {
if cn, ok := maybeString(data); ok {
s.CommonName = cn
return nil
}
type subjectAlias Subject
var ss subjectAlias
if err := json.Unmarshal(data, &ss); err != nil {
return errors.Wrap(err, "error unmarshaling json")
}
*s = Subject(ss)
return nil
}
// SerialNumber is the JSON representation of the X509 serial number.
type SerialNumber struct {
*big.Int
}
// Set sets the serial number in the given certificate.
func (s SerialNumber) Set(c *x509.Certificate) {
c.SerialNumber = s.Int
}
// UnmarshalJSON implements the json.Unmarshal interface and unmarshals an
// integer or a string into a serial number. If a string is used, a prefix of
// “0b” or “0B” selects base 2, “0”, “0o” or “0O” selects base 8, and “0x” or
// “0X” selects base 16. Otherwise, the selected base is 10 and no prefix is
// accepted.
func (s *SerialNumber) UnmarshalJSON(data []byte) error {
if sn, ok := maybeString(data); ok {
// Using base 0 to accept prefixes 0b, 0o, 0x but defaults as base 10.
b, ok := new(big.Int).SetString(sn, 0)
if !ok {
return errors.Errorf("error unmarshaling json: serialNumber %s is not valid", sn)
}
*s = SerialNumber{
Int: b,
}
return nil
}
// Assume a number.
var i int64
if err := json.Unmarshal(data, &i); err != nil {
return errors.Wrap(err, "error unmarshaling json")
}
*s = SerialNumber{
Int: new(big.Int).SetInt64(i),
}
return nil
}
// SignatureAlgorithm is the JSON representation of the X509 signature algorithms
type SignatureAlgorithm x509.SignatureAlgorithm
// Set sets the signature algorithm in the given certificate.
func (s SignatureAlgorithm) Set(c *x509.Certificate) {
c.SignatureAlgorithm = s
}
// UnmarshalJSON implements the json.Unmarshal interface and unmarshals a JSON
// object in the Subject struct or a string as just the subject common name.
func (s *SignatureAlgorithm) UnmarshalJSON(data []byte) error {
s, err := unmarshalString(data)
if err != nil {
return err
}
var sa x509.SignatureAlgorithm
switch strings.ToUpper(s) {
case "MD2-RSA":
sa = x509.MD2WithRSA
case "MD5-RSA":
sa = x509.MD5WithRSA
case "SHA1-RSA":
sa = x509.SHA1WithRSA
case "SHA1-RSA":
sa = x509.SHA1WithRSA
case "SHA256-RSA":
sa = x509.SHA256WithRSA
case "SHA384-RSA":
sa = x509.SHA384WithRSA
case "SHA512-RSA":
sa = x509.SHA512WithRSA
case "SHA256-RSAPSS":
sa = x509.SHA256WithRSAPSS
case "SHA384-RSAPSS":
sa = x509.SHA384WithRSAPSS
case "SHA512-RSAPSS":
sa = x509.SHA512WithRSAPSS
case "DSA-SHA1":
sa = x509.DSAWithSHA1
case "DSA-SHA256":
sa = x509.DSAWithSHA256
case "ECDSA-SHA1":
sa = x509.ECDSAWithSHA1
case "ECDSA-SHA256":
sa = x509.ECDSAWithSHA256
case "ECDSA-SHA384":
sa = x509.ECDSAWithSHA384
case "ECDSA-SHA512":
sa = x509.ECDSAWithSHA512
case "ED25519":
sa = x509.PureEd25519
default:
return errors.Errorf("unsupported signatureAlgorithm %s", s)
}
*s = SignatureAlgorithm(sa)
return nil
}

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package x509util
import "crypto/x509"
type CertificateRequest struct {
Version int `json:"version"`
Subject Subject `json:"subject"`
DNSNames MultiString `json:"dnsNames"`
EmailAddresses MultiString `json:"emailAddresses"`
IPAddresses MultiIP `json:"ipAddresses"`
URIs MultiURL `json:"uris"`
Extensions []Extension `json:"extensions"`
PublicKey interface{} `json:"-"`
PublicKeyAlgorithm x509.PublicKeyAlgorithm `json:"-"`
Signature []byte `json:"-"`
SignatureAlgorithm x509.SignatureAlgorithm `json:"-"`
}
func newCertificateRequest(cr *x509.CertificateRequest) *CertificateRequest {
return &CertificateRequest{
Version: cr.Version,
Subject: newSubject(cr.Subject),
DNSNames: cr.DNSNames,
EmailAddresses: cr.EmailAddresses,
IPAddresses: cr.IPAddresses,
URIs: cr.URIs,
Extensions: nil,
PublicKey: cr.PublicKey,
PublicKeyAlgorithm: cr.PublicKeyAlgorithm,
Signature: cr.Signature,
SignatureAlgorithm: cr.SignatureAlgorithm,
}
}
func (c *CertificateRequest) GetCertificate() *Certificate {
return &Certificate{
Subject: c.Subject,
DNSNames: c.DNSNames,
EmailAddresses: c.EmailAddresses,
IPAddresses: c.IPAddresses,
URIs: c.URIs,
Extensions: c.Extensions,
PublicKey: c.PublicKey,
PublicKeyAlgorithm: c.PublicKeyAlgorithm,
PublicKey: c.PublicKey,
PublicKeyAlgorithm: c.PublicKeyAlgorithm,
}
}

294
x509util/extensions.go Normal file
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package x509util
import (
"crypto/x509"
"crypto/x509/pkix"
"encoding/asn1"
"strings"
"github.com/pkg/errors"
)
func convertName(s string) string {
return strings.ReplaceAll(strings.ToLower(s), "_", "")
}
// Names used for key usages.
var (
KeyUsageDigitalSignature = convertName("DigitalSignature")
KeyUsageContentCommitment = convertName("ContentCommitment")
KeyUsageKeyEncipherment = convertName("KeyEncipherment")
KeyUsageDataEncipherment = convertName("DataEncipherment")
KeyUsageKeyAgreement = convertName("KeyAgreement")
KeyUsageCertSign = convertName("CertSign")
KeyUsageCRLSign = convertName("CRLSign")
KeyUsageEncipherOnly = convertName("EncipherOnly")
KeyUsageDecipherOnly = convertName("DecipherOnly")
)
// Names used for extended key usages.
var (
ExtKeyUsageAny = convertName("Any")
ExtKeyUsageServerAuth = convertName("ServerAuth")
ExtKeyUsageClientAuth = convertName("ClientAuth")
ExtKeyUsageCodeSigning = convertName("CodeSigning")
ExtKeyUsageEmailProtection = convertName("EmailProtection")
ExtKeyUsageIPSECEndSystem = convertName("IPSECEndSystem")
ExtKeyUsageIPSECTunnel = convertName("IPSECTunnel")
ExtKeyUsageIPSECUser = convertName("IPSECUser")
ExtKeyUsageTimeStamping = convertName("TimeStamping")
ExtKeyUsageOCSPSigning = convertName("OCSPSigning")
ExtKeyUsageMicrosoftServerGatedCrypto = convertName("MicrosoftServerGatedCrypto")
ExtKeyUsageNetscapeServerGatedCrypto = convertName("NetscapeServerGatedCrypto")
ExtKeyUsageMicrosoftCommercialCodeSigning = convertName("MicrosoftCommercialCodeSigning")
ExtKeyUsageMicrosoftKernelCodeSigning = convertName("MicrosoftKernelCodeSigning")
)
// Extension is the JSON representation of a raw X.509 extensions.
type Extension struct {
ID ObjectIdentifier `json:"id"`
Critical bool `json:"critical"`
Value []byte `json:"value"`
}
// Set adds the extension to the given X509 certificate.
func (e Extension) Set(c *x509.Certificate) {
c.ExtraExtensions = append(c.ExtraExtensions, pkix.Extension{
Id: asn1.ObjectIdentifier(e.ID),
Critical: e.Critical,
Value: e.Value,
})
}
// ObjectIdentifier represents a JSON strings that unmarshals into an ASN1
// object identifier or OID.
type ObjectIdentifier asn1.ObjectIdentifier
// UnmarshalJSON implements the json.Unmarshaler interface and coverts a strings
// like "2.5.29.17" into an ASN1 object identifier.
func (o *ObjectIdentifier) UnmarshalJSON(data []byte) error {
s, err := unmarshalString(data)
if err != nil {
return err
}
oid, err := parseObjectIdentifier(s)
if err != nil {
return err
}
*o = ObjectIdentifier(oid)
return nil
}
// KeyUsage type represents the JSON array used to represent the key usages of a
// X509 certificate.
type KeyUsage x509.KeyUsage
// Set sets the key usage to the given certificate.
func (k KeyUsage) Set(c *x509.Certificate) {
c.KeyUsage = x509.KeyUsage(k)
}
// UnmarshalJSON implements the json.Unmarshaler interface and coverts a string
// or a list of strings into a key usage.
func (k *KeyUsage) UnmarshalJSON(data []byte) error {
ms, err := unmarshalMultiString(data)
if err != nil {
return err
}
*k = 0
for _, s := range ms {
var ku x509.KeyUsage
switch convertName(s) {
case KeyUsageDigitalSignature:
ku = x509.KeyUsageDigitalSignature
case KeyUsageContentCommitment:
ku = x509.KeyUsageContentCommitment
case KeyUsageKeyEncipherment:
ku = x509.KeyUsageKeyEncipherment
case KeyUsageDataEncipherment:
ku = x509.KeyUsageDataEncipherment
case KeyUsageKeyAgreement:
ku = x509.KeyUsageKeyAgreement
case KeyUsageCertSign:
ku = x509.KeyUsageCertSign
case KeyUsageCRLSign:
ku = x509.KeyUsageCRLSign
case KeyUsageEncipherOnly:
ku = x509.KeyUsageEncipherOnly
case KeyUsageDecipherOnly:
ku = x509.KeyUsageDecipherOnly
default:
return errors.Errorf("unsupported keyUsage %s", s)
}
*k |= KeyUsage(ku)
}
return nil
}
// ExtKeyUsage represents a JSON array of extended key usages.
type ExtKeyUsage []x509.ExtKeyUsage
// Set sets the extended key usages in the given certificate.
func (k ExtKeyUsage) Set(c *x509.Certificate) {
c.ExtKeyUsage = []x509.ExtKeyUsage(k)
}
// UnmarshalJSON implements the json.Unmarshaler interface and coverts a string
// or a list of strings into a list of extended key usages.
func (k *ExtKeyUsage) UnmarshalJSON(data []byte) error {
ms, err := unmarshalMultiString(data)
if err != nil {
return err
}
eku := make([]x509.ExtKeyUsage, len(ms))
for i, s := range ms {
var ku x509.ExtKeyUsage
switch convertName(s) {
case ExtKeyUsageAny:
ku = x509.ExtKeyUsageAny
case ExtKeyUsageServerAuth:
ku = x509.ExtKeyUsageServerAuth
case ExtKeyUsageClientAuth:
ku = x509.ExtKeyUsageClientAuth
case ExtKeyUsageCodeSigning:
ku = x509.ExtKeyUsageCodeSigning
case ExtKeyUsageEmailProtection:
ku = x509.ExtKeyUsageEmailProtection
case ExtKeyUsageIPSECEndSystem:
ku = x509.ExtKeyUsageIPSECEndSystem
case ExtKeyUsageIPSECTunnel:
ku = x509.ExtKeyUsageIPSECTunnel
case ExtKeyUsageIPSECUser:
ku = x509.ExtKeyUsageIPSECUser
case ExtKeyUsageTimeStamping:
ku = x509.ExtKeyUsageTimeStamping
case ExtKeyUsageOCSPSigning:
ku = x509.ExtKeyUsageOCSPSigning
case ExtKeyUsageMicrosoftServerGatedCrypto:
ku = x509.ExtKeyUsageMicrosoftServerGatedCrypto
case ExtKeyUsageNetscapeServerGatedCrypto:
ku = x509.ExtKeyUsageNetscapeServerGatedCrypto
case ExtKeyUsageMicrosoftCommercialCodeSigning:
ku = x509.ExtKeyUsageMicrosoftCommercialCodeSigning
case ExtKeyUsageMicrosoftKernelCodeSigning:
ku = x509.ExtKeyUsageMicrosoftKernelCodeSigning
default:
return errors.Errorf("unsupported extKeyUsage %s", s)
}
eku[i] = ku
}
*k = ExtKeyUsage(eku)
return nil
}
// SubjectKeyID represents the binary value of the subject key identifier
// extension, this should be the SHA-1 hash of the public key. In JSON this
// value should be a base64-encoded string, and in most cases it should not be
// set because it will be automatically generated.
type SubjectKeyID []byte
// Set sets the subject key identifier to the given certificate.
func (id SubjectKeyID) Set(c *x509.Certificate) {
c.SubjectKeyId = id
}
// AuthorityKeyID represents the binary value of the authority key identifier
// extension. It should be the subject key identifier of the parent certificate.
// In JSON this value should be a base64-encoded string, and in most cases it
// should not be set, as it will be automatically provided.
type AuthorityKeyID []byte
// Set sets the authority key identifier to the given certificate.
func (id AuthorityKeyID) Set(c *x509.Certificate) {
c.AuthorityKeyId = id
}
// OCSPServer contains the list of OSCP servers that will be encoded in the
// authority information access extension.
type OCSPServer MultiString
// Set sets the list of OSCP servers to the given certificate.
func (o OCSPServer) Set(c *x509.Certificate) {
c.OCSPServer = o
}
// IssuingCertificateURL contains the list of the issuing certificate url that
// will be encoded in the authority information access extension.
type IssuingCertificateURL MultiString
// Set sets the list of issuing certificate urls to the given certificate.
func (u IssuingCertificateURL) Set(c *x509.Certificate) {
c.IssuingCertificateURL = u
}
// CRLDistributionPoints contains the list of CRL distribution points that will
// be encoded in the CRL distribution points extension.
type CRLDistributionPoints MultiString
// Set sets the CRL distribution points to the given certificate.
func (u CRLDistributionPoints) Set(c *x509.Certificate) {
c.CRLDistributionPoints = u
}
// PolicyIdentifiers represents the list of OIDs to set in the certificate
// policies extension.
type PolicyIdentifiers MultiObjectIdentifier
// Sets sets the policy identifiers to the given certificate.
func (p PolicyIdentifiers) Set(c *x509.Certificate) {
c.PolicyIdentifiers = p
}
// BasicConstraints represents the X509 basic constraints exception and defines
// if a certificate is a CA and then maximum depth of valid certification paths
// that include the certificate. A MaxPathLen of zero indicates that no non-
// self-issued intermediate CA certificates may follow in a valid certification
// path. To do not impose a limit the MaxPathLen should be set to -1.
type BasicConstraints struct {
IsCA bool `json:"isCA"`
MaxPathLen int `json:"maxPathLen"`
}
// Set sets the basic constraints to the given certificate.
func (b BasicConstraints) Set(c *x509.Certificate) {
c.IsCA = b.IsCA
c.MaxPathLen = b.MaxPathLen
if c.MaxPathLen < 0 {
c.MaxPathLen = -1
}
}
// NameConstraints represents the X509 Name constraints extension and defines a
// names space within which all subject names in subsequent certificates in a
// certificate path must be located. The name constraints extension must be used
// only in a CA.
type NameConstraints struct {
Critical bool `json:"critical"`
PermittedDNSDomains MultiString `json:"permittedDNSDomains"`
ExcludedDNSDomains MultiString `json:"excludedDNSDomains"`
PermittedIPRanges MultiIPNet `json:"permittedIPRanges"`
ExcludedIPRanges MultiIPNet `json:"excludedIPRanges"`
PermittedEmailAddresses MultiString `json:"permittedEmailAddresses"`
ExcludedEmailAddresses MultiString `json:"excludedEmailAddresses"`
PermittedURIDomains MultiString `json:"permittedURIDomains"`
ExcludedURIDomains MultiString `json:"excludedURIDomains"`
}
// Sets sets the name constraints in the given certificate.
func (n NameConstraints) Set(c *x509.Certificate) {
c.PermittedDNSDomainsCritical = n.Critical
c.PermittedDNSDomains = n.PermittedDNSDomains
c.ExcludedDNSDomains = n.ExcludedDNSDomains
c.PermittedIPRanges = n.PermittedIPRanges
c.ExcludedIPRanges = n.ExcludedIPRanges
c.PermittedEmailAddresses = n.PermittedEmailAddresses
c.ExcludedEmailAddresses = n.ExcludedEmailAddresses
c.PermittedURIDomains = n.PermittedURIDomains
c.ExcludedURIDomains = n.ExcludedURIDomains
}

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x509util/marshal_utils.go Normal file
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package x509util
import (
"encoding/asn1"
"encoding/json"
"net"
"net/url"
"strconv"
"strings"
"github.com/pkg/errors"
)
// MultiString is a type used to unmarshal a JSON string or an array of strings
// into a []string.
type MultiString []string
// UnmarshalJSON implements the json.Unmarshaler interface for MultiString.
func (m *MultiString) UnmarshalJSON(data []byte) error {
if s, ok := maybeString(data); ok {
*m = MultiString([]string{s})
return nil
}
var v []string
if err := json.Unmarshal(data, &v); err != nil {
return errors.Wrap(err, "error unmarshaling json")
}
*m = MultiString(v)
return nil
}
// MultiIP is a type used to unmarshal a JSON string or an array of strings into
// a []net.IP.
type MultiIP []net.IP
// UnmarshalJSON implements the json.Unmarshaler interface for MultiIP.
func (m *MultiIP) UnmarshalJSON(data []byte) error {
ms, err := unmarshalMultiString(data)
if err != nil {
return err
}
ips := make([]net.IP, len(ms))
for i, s := range ms {
ip := net.ParseIP(s)
if ip == nil {
return errors.Errorf("error unmarshaling json: ip %s is not valid", s)
}
ips[i] = ip
}
*m = MultiIP(ips)
return nil
}
// MultiIPNet is a type used to unmarshal a JSON string or an array of strings
// into a []*net.IPNet.
type MultiIPNet []*net.IPNet
// UnmarshalJSON implements the json.Unmarshaler interface for MultiIPNet.
func (m *MultiIPNet) UnmarshalJSON(data []byte) error {
ms, err := unmarshalMultiString(data)
if err != nil {
return err
}
ipNets := make([]*net.IPNet, len(ms))
for i, s := range ms {
_, ipNet, err := net.ParseCIDR(s)
if err != nil {
return errors.Wrap(err, "error unmarshaling json")
}
ipNets[i] = ipNet
}
*m = MultiIPNet(ipNets)
return nil
}
// MultiURL is a type used to unmarshal a JSON string or an array of strings
// into a []*url.URL.
type MultiURL []*url.URL
// UnmarshalJSON implements the json.Unmarshaler interface for MultiURL.
func (m *MultiURL) UnmarshalJSON(data []byte) error {
ms, err := unmarshalMultiString(data)
if err != nil {
return err
}
urls := make([]*url.URL, len(ms))
for i, s := range ms {
u, err := url.Parse(s)
if err != nil {
return errors.Wrap(err, "error unmarshaling json")
}
urls[i] = u
}
*m = MultiURL(urls)
return nil
}
// MultiObjectIdentifier is a type used to unmarshal a JSON string or an array
// of strings into a []asn1.ObjectIdentifier.
type MultiObjectIdentifier []asn1.ObjectIdentifier
// UnmarshalJSON implements the json.Unmarshaler interface for
// MultiObjectIdentifier.
func (m *MultiObjectIdentifier) UnmarshalJSON(data []byte) error {
ms, err := unmarshalMultiString(data)
if err != nil {
return err
}
oids := make([]asn1.ObjectIdentifier, len(ms))
for i, s := range ms {
oid, err := parseObjectIdentifier(s)
if err != nil {
return err
}
oids[i] = oid
}
*m = MultiObjectIdentifier(oids)
return nil
}
func maybeString(data []byte) (string, bool) {
if len(data) > 0 && data[0] == '"' {
var v string
if err := json.Unmarshal(data, &v); err == nil {
return v, true
}
}
return "", false
}
func unmarshalString(data []byte) (string, error) {
var v string
if err := json.Unmarshal(data, &v); err != nil {
return v, errors.Wrap(err, "error unmarshaling json")
}
return v, nil
}
func unmarshalMultiString(data []byte) ([]string, error) {
var v MultiString
if err := json.Unmarshal(data, &v); err != nil {
return nil, errors.Wrap(err, "error unmarshaling json")
}
return []string(v), nil
}
func parseObjectIdentifier(oid string) (asn1.ObjectIdentifier, error) {
parts := strings.Split(oid, ".")
oids := make([]int, len(parts))
for i, s := range parts {
n, err := strconv.Atoi(s)
if err != nil {
return asn1.ObjectIdentifier{}, errors.Errorf("error unmarshaling json: %s is not an ASN1 object identifier", oid)
}
oids[i] = n
}
return asn1.ObjectIdentifier(oids), nil
}

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x509util/options.go Normal file
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package x509util
import (
"bytes"
"io/ioutil"
"text/template"
"github.com/Masterminds/sprig"
"github.com/pkg/errors"
"github.com/smallstep/cli/config"
)
type Options struct {
CertBuffer *bytes.Buffer
}
func (o *Options) apply(opts []Option) (*Options, error) {
for _, fn := range opts {
if err := fn(o); err != nil {
return o, err
}
}
return o, nil
}
type Option func(o *Options) error
func WithTemplate(path string, data map[string]interface{}) Option {
return func(o *Options) error {
filename := config.StepAbs(path)
b, err := ioutil.ReadFile(filename)
if err != nil {
return errors.Wrapf(err, "error reading %s", path)
}
tmpl, err := template.New(path).Funcs(sprig.TxtFuncMap()).Parse(string(b))
if err != nil {
return errors.Wrapf(err, "error parsing %s", path)
}
buf := new(bytes.Buffer)
if err := tmpl.Execute(buf, data); err != nil {
return errors.Wrapf(err, "error executing %s", path)
}
o.CertBuffer = buf
return nil
}
}

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x509util/sign_options.go Normal file
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package x509util