79 lines
2.0 KiB
Go
79 lines
2.0 KiB
Go
package authstore
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import (
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"crypto/rand"
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"crypto/sha256"
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"encoding/base64"
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"errors"
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"time"
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jwt "github.com/dgrijalva/jwt-go"
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)
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var ErrExists = errors.New("token already exists")
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type Authorization struct {
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ID string `db:"id,omitempty" json:"-"`
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MachinePPID string `db:"machine_ppid,omitempty" json:"machine_ppid,omitempty"`
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PublicKey string `db:"public_key,omitempty" json:"public_key,omitempty"`
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SharedKey string `db:"shared_key,omitempty" json:"shared_key"`
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Slug string `db:"slug,omitempty" json:"slug"`
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CreatedAt time.Time `db:"created_at,omitempty" json:"created_at,omitempty"`
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UpdatedAt time.Time `db:"updated_at,omitempty" json:"updated_at,omitempty"`
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DeletedAt time.Time `db:"deleted_at,omitempty" json:"-"`
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}
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type Store interface {
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SetMaster(secret string) error
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Add(auth *Authorization) error
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Set(auth *Authorization) error
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Active() ([]Authorization, error)
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Inactive() ([]Authorization, error)
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Touch(id string) error
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Get(id string) (*Authorization, error)
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GetBySlug(id string) (*Authorization, error)
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GetByPub(id string) (*Authorization, error)
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Delete(auth *Authorization) error
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Close() error
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}
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func ToPublicKeyString(secret string) string {
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pubBytes := sha256.Sum256([]byte(secret))
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pub := base64.RawURLEncoding.EncodeToString(pubBytes[:])
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if len(pub) > 24 {
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pub = pub[:24]
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}
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return pub
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}
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func HMACToken(secret string) (token string, err error) {
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keyID := ToPublicKeyString(secret)
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b := make([]byte, 16)
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_, _ = rand.Read(b)
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claims := &jwt.StandardClaims{
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Id: base64.RawURLEncoding.EncodeToString(b),
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Subject: "", // TODO
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Issuer: "", // TODO
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IssuedAt: time.Now().Unix(),
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ExpiresAt: time.Now().Add(5 * time.Minute).Unix(),
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}
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jwtToken := &jwt.Token{
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Header: map[string]interface{}{
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"kid": keyID,
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"typ": "JWT",
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"alg": jwt.SigningMethodHS256.Alg(),
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},
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Claims: claims,
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Method: jwt.SigningMethodHS256,
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}
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if token, err = jwtToken.SignedString([]byte(secret)); err != nil {
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return "", err
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}
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return token, nil
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}
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