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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,85 @@ | ||
| package jwt | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "time" | ||
|
|
||
| "github.com/convox/rack/pkg/structs" | ||
| "github.com/golang-jwt/jwt/v4" | ||
| ) | ||
|
|
||
| type TokenData struct { | ||
| User string | ||
| Role string | ||
| ExpiresAt time.Time | ||
| } | ||
|
|
||
| type JwtManager struct { | ||
| signKey []byte | ||
| } | ||
|
|
||
| func NewJwtManager(signKey string) *JwtManager { | ||
| return &JwtManager{ | ||
| signKey: []byte(signKey), | ||
| } | ||
| } | ||
|
|
||
| func (j *JwtManager) ReadToken(duration time.Duration) (string, error) { | ||
| token := jwt.NewWithClaims(jwt.SigningMethodHS256, jwt.MapClaims{ | ||
| "user": "system-read", | ||
| "role": structs.ConvoxRoleRead, | ||
| "expiresAt": time.Now().UTC().Add(duration).Unix(), | ||
| }) | ||
|
|
||
| // Sign and get the complete encoded token as a string using the secret | ||
| tokenString, err := token.SignedString(j.signKey) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| return tokenString, nil | ||
| } | ||
|
|
||
| func (j *JwtManager) WriteToken(duration time.Duration) (string, error) { | ||
| token := jwt.NewWithClaims(jwt.SigningMethodHS256, jwt.MapClaims{ | ||
| "user": "system-write", | ||
| "role": structs.ConvoxRoleReadWrite, | ||
| "expiresAt": time.Now().UTC().Add(duration).Unix(), | ||
| }) | ||
|
|
||
| // Sign and get the complete encoded token as a string using the secret | ||
| tokenString, err := token.SignedString(j.signKey) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| return tokenString, nil | ||
| } | ||
|
|
||
| func (j *JwtManager) Verify(token string) (*TokenData, error) { | ||
| d := &TokenData{} | ||
| tk, err := jwt.Parse(token, func(t *jwt.Token) (interface{}, error) { | ||
| if _, ok := t.Method.(*jwt.SigningMethodHMAC); !ok { | ||
| return nil, fmt.Errorf("unexpected signing method: %v", t.Header["alg"]) | ||
| } | ||
|
|
||
| return j.signKey, nil | ||
| }) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| if !tk.Valid { | ||
| return nil, fmt.Errorf("invalid token") | ||
| } | ||
| if claims, ok := tk.Claims.(jwt.MapClaims); ok { | ||
| d.User = claims["user"].(string) | ||
| d.Role = claims["role"].(string) | ||
| expiresAt := (int64)(claims["expiresAt"].(float64)) | ||
| d.ExpiresAt = time.Unix(expiresAt, 0) | ||
| if d.ExpiresAt.UTC().Before(time.Now().UTC()) { | ||
| return nil, fmt.Errorf("token is expired") | ||
| } | ||
| } else { | ||
| return nil, fmt.Errorf("invalid token") | ||
| } | ||
| return d, nil | ||
| } | ||
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