FernandoJVideira
c4ee0ce4dc
Rename the module, proto service, and all identifiers from simple_bank/ SimpleBank to api_tmpl/ApiTmpl, and regenerate the gRPC/gateway/swagger/ mock code accordingly. - Scrub real secrets (SMTP password, auth token secret) from api.env/ api_test.env, untrack them, and add api.env.example/api_test.env.example - Remove committed build artifacts (tmp/main, tmp/build-errors.log, dbml-error.log) and gitignore them going forward - Fix Dockerfile paths (build target, migrations copy) that referenced a stale project layout - Rewrite README to match the actual cmd/ + internal/ structure and add a "using this as a template" section
129 lines
2.9 KiB
Go
129 lines
2.9 KiB
Go
package auth
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"time"
|
|
|
|
"github.com/FernandoJVideira/api_tmpl/internal/config"
|
|
"github.com/golang-jwt/jwt/v5"
|
|
"github.com/google/uuid"
|
|
)
|
|
|
|
// JWTMaker is a JSON Web Token maker
|
|
type JWTMaker struct {
|
|
secretKey string
|
|
config config.Config
|
|
}
|
|
|
|
func NewJWTClaims(payload *Payload, config config.Config) jwt.Claims {
|
|
return &jwt.MapClaims{
|
|
"iat": jwt.NewNumericDate(payload.IssuedAt),
|
|
"iss": config.TokenISS,
|
|
"exp": jwt.NewNumericDate(payload.ExpiredAt),
|
|
"nbf": jwt.NewNumericDate(payload.IssuedAt),
|
|
"aud": []string{config.TokenAUD},
|
|
"sub": payload.Username,
|
|
"role": payload.Role,
|
|
"jti": payload.ID.String(),
|
|
}
|
|
}
|
|
|
|
// NewJWTMaker creates a new JWTMaker
|
|
|
|
func NewJWTMaker(config config.Config) (Maker, error) {
|
|
if len(config.TokenKey) < config.MinTokenSize {
|
|
return nil, fmt.Errorf("invalid key size: must be at least %d characters", config.MinTokenSize)
|
|
}
|
|
return &JWTMaker{secretKey: config.TokenKey, config: config}, nil
|
|
}
|
|
|
|
func (maker *JWTMaker) CreateToken(username string, role string, duration time.Duration) (string, *Payload, error) {
|
|
payload, err := NewPayload(username, role, duration)
|
|
if err != nil {
|
|
return "", nil, err
|
|
}
|
|
|
|
jwtToken := jwt.NewWithClaims(jwt.SigningMethodHS256, NewJWTClaims(payload, maker.config))
|
|
|
|
signedString, err := jwtToken.SignedString([]byte(maker.secretKey))
|
|
|
|
return signedString, payload, err
|
|
}
|
|
|
|
func (maker *JWTMaker) VerifyToken(token string) (*Payload, error) {
|
|
payloadClaims := jwt.MapClaims{}
|
|
keyFunc := func(token *jwt.Token) (any, error) {
|
|
_, ok := token.Method.(*jwt.SigningMethodHMAC)
|
|
if !ok {
|
|
return nil, ErrInvalidToken
|
|
}
|
|
return []byte(maker.secretKey), nil
|
|
}
|
|
|
|
jwtToken, err := jwt.ParseWithClaims(token, payloadClaims, keyFunc)
|
|
if err != nil {
|
|
if errors.Is(err, jwt.ErrTokenExpired) {
|
|
return nil, ErrExpiredToken
|
|
} else if errors.Is(err, ErrInvalidToken) {
|
|
return nil, ErrInvalidToken
|
|
} else {
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
payloadClaims, ok := jwtToken.Claims.(jwt.MapClaims)
|
|
if !ok {
|
|
return nil, ErrInvalidToken
|
|
}
|
|
|
|
payload, err := parseTypes(payloadClaims)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return payload, nil
|
|
}
|
|
|
|
func parseTypes(claims jwt.MapClaims) (*Payload, error) {
|
|
// Safe type assertions with error checking
|
|
jti, ok := claims["jti"].(string)
|
|
if !ok {
|
|
return nil, ErrInvalidToken
|
|
}
|
|
|
|
id, err := uuid.Parse(jti)
|
|
if err != nil {
|
|
return nil, ErrInvalidToken
|
|
}
|
|
|
|
username, ok := claims["sub"].(string)
|
|
if !ok {
|
|
return nil, ErrInvalidToken
|
|
}
|
|
|
|
role, ok := claims["role"].(string)
|
|
if !ok {
|
|
return nil, ErrInvalidToken
|
|
}
|
|
|
|
// Parse numeric dates
|
|
nbf, ok := claims["nbf"].(float64)
|
|
if !ok {
|
|
return nil, ErrInvalidToken
|
|
}
|
|
|
|
exp, ok := claims["exp"].(float64)
|
|
if !ok {
|
|
return nil, ErrInvalidToken
|
|
}
|
|
|
|
return &Payload{
|
|
ID: id,
|
|
Username: username,
|
|
Role: role,
|
|
IssuedAt: time.Unix(int64(nbf), 0),
|
|
ExpiredAt: time.Unix(int64(exp), 0),
|
|
}, nil
|
|
}
|