Merge pull request #22 from edwinvautier/feat_install-command

Feat: Add fake bundle to test importing it.

bundles/authenticator/authenticator.go

@@ -0,0 +1,19 @@
+package authenticator
+
+import (
+	"github.com/dgrijalva/jwt-go"
+)
+type authenticatorInterface interface {
+	GenerateToken(string) (error, string)
+	DecodeToken(string)
+	HashPassword(string, string) error
+}
+
+// Claim is the struct for the jwt claim
+type Claim struct {
+	Email string
+	jwt.StandardClaims
+}
+
+// Authenticator is the struct for the authenticator bundle
+type Authenticator struct {}

bundles/authenticator/env.go

@@ -0,0 +1,26 @@
+package authenticator
+
+import (
+	"os"
+
+	"github.com/joho/godotenv"
+	log "github.com/sirupsen/logrus"
+)
+
+// GoDotEnvVariable loads a variable from the .env file
+func goDotEnvVariable(key string) string {
+
+	// load .env file
+	err := godotenv.Load(".env")
+
+	if err != nil {
+		log.Error("Error loading .env file", err)
+	}
+
+	envVariable, variableExists := os.LookupEnv(key)
+	if !variableExists {
+		log.Error("Couldn't find variable : ", key)
+	}
+
+	return envVariable
+}

bundles/authenticator/password_hasher.go

@@ -0,0 +1,16 @@
+package authenticator
+
+import (
+	"crypto/sha512"
+	"fmt"
+)
+
+// HashPassword takes a string in parameter and returns the same string hashed with sha512
+func (auth Authenticator) HashPassword(password string) string {
+	h := sha512.New()
+	h.Write([]byte(password))
+	bytesHash := h.Sum(nil)
+	hexString := fmt.Sprintf("%x", bytesHash)
+	// Returns the hexa string
+	return hexString
+}

bundles/authenticator/token.go

@@ -0,0 +1,108 @@
+package authenticator
+
+import (
+	"errors"
+	"io/ioutil"
+	"strconv"
+	"time"
+
+	"github.com/dgrijalva/jwt-go"
+	log "github.com/sirupsen/logrus"
+)
+
+// Rsa is the struct to get the rsa keys used to generate and verify tokens from the environment variables
+type Rsa struct {
+	PublicKeyPath  string
+	PrivateKeyPath string
+	PublicKey      interface{}
+	PrivateKey     interface{}
+}
+
+var rsa Rsa
+
+func initRsaKeys() error {
+	if rsa.PrivateKey != nil && rsa.PublicKey != nil {
+		return nil
+	}
+
+	rsa.PublicKeyPath = goDotEnvVariable("RSA_PUBLIC_PATH")
+	rsa.PrivateKeyPath = goDotEnvVariable("RSA_PRIVATE_PATH")
+
+	// Get the public key
+	publicKeyData, err := ioutil.ReadFile(rsa.PublicKeyPath)
+	if err != nil {
+		log.Error(err)
+		return err
+	}
+	publicKey, err := jwt.ParseRSAPublicKeyFromPEM(publicKeyData)
+	if err != nil {
+		log.Error("error public key: ", err)
+		return err
+	}
+	rsa.PublicKey = publicKey
+
+	// Get the private key
+	privateKeyData, err := ioutil.ReadFile(rsa.PrivateKeyPath)
+	if err != nil {
+		log.Error(err)
+		return err
+	}
+	privateKey, err := jwt.ParseRSAPrivateKeyFromPEMWithPassword(privateKeyData, goDotEnvVariable("RSA_PASSWORD"))
+	if err != nil {
+		log.Error("error public key: ", err)
+		return err
+	}
+	rsa.PrivateKey = privateKey
+
+	return nil
+}
+
+// GenerateToken creates a JWT with email and expiration time in the payload
+func (auth Authenticator) GenerateToken(email string) (string, error) {
+	err := initRsaKeys()
+	if err != nil {
+		return "", errors.New("Couldn't init rsa keys")
+	}
+
+	validTime, _ := strconv.ParseInt(goDotEnvVariable("TOKEN_VALID_DURATION"), 10, 64)
+	// Generate Expiration date
+	expirationTime := time.Now().Add(time.Duration(validTime) * time.Minute)
+
+	claims := &Claim{
+		Email: email,
+		StandardClaims: jwt.StandardClaims{
+			// JWT takes unix timestamps
+			ExpiresAt: expirationTime.Unix(),
+		},
+	}
+
+	token := jwt.NewWithClaims(jwt.SigningMethodRS256, claims)
+	tokenString, err := token.SignedString(rsa.PrivateKey)
+
+	if err != nil {
+		log.Error("error while generating token: ", err)
+		return "", err
+	}
+
+	return tokenString, nil
+}
+
+// DecodeToken decode and validates a token
+func (auth Authenticator) DecodeToken(tokenString string) (*jwt.Token, *Claim, error) {
+	err := initRsaKeys()
+	if err != nil {
+		return nil, &Claim{}, errors.New("Couldn't init rsa keys")
+	}
+
+	claims := &Claim{}
+
+	token, err := jwt.ParseWithClaims(tokenString, claims, func(token *jwt.Token) (interface{}, error) {
+		return rsa.PublicKey, nil
+	})
+	if err != nil {
+		log.Error("Couldn't parse the token : ", err)
+		return nil, &Claim{}, err
+	}
+
+	return token, claims, nil
+}

go.mod

@@ -4,16 +4,18 @@ go 1.15
 
 require (
 	github.com/AlecAivazis/survey/v2 v2.2.9
-	github.com/edwinvautier/go-boilerplate v0.0.0-20210322134926-eb821f8d79a6 // indirect
+	github.com/dgrijalva/jwt-go v3.2.0+incompatible
 	github.com/gobuffalo/packd v1.0.0
 	github.com/gobuffalo/packr/v2 v2.8.1
+	github.com/joho/godotenv v1.3.0
 	github.com/karrick/godirwalk v1.16.1 // indirect
 	github.com/mattn/go-colorable v0.1.8 // indirect
 	github.com/mgutz/ansi v0.0.0-20200706080929-d51e80ef957d // indirect
 	github.com/mitchellh/go-homedir v1.1.0
 	github.com/sirupsen/logrus v1.8.1
 	github.com/spf13/cobra v1.1.3
 	github.com/spf13/viper v1.7.1
+	github.com/stretchr/testify v1.7.0 // indirect
 	golang.org/x/crypto v0.0.0-20210322153248-0c34fe9e7dc2 // indirect
 	golang.org/x/sys v0.0.0-20210324051608-47abb6519492 // indirect
 	golang.org/x/term v0.0.0-20210317153231-de623e64d2a6 // indirect