This is Golang lbrary to manage JWT tokens, with this you can generate a token, validate a token and check if the token has a specific prmission
Then run go get command to download your library
go get -u github.com/mudphilo/gwt
go mod vendorThis library will read secret key from the environment variable name
JWT_SECRET=SEcret KeySetup the below envronment variables if you want to generate a token
JWT_ISSUER=Token issuer
JWT_DURATION_HOURS=token-lifetime-in-hour-must-be-int
This needs to be setup in your application, the key must be the same as the one used to generate the token
jwtSecret := os.Getenv("JWT_SECRET")The function needs
- user ID
- user name
- Assigned roles and permissions
package mytest
import (
tokenutils "github.com/mudphilo/gwt"
"fmt"
)
func GenerateToken() {
// create all permissions the user has
var permissions []tokenutils.Permission
permissions = append(permissions, tokenutils.Permission{
Module: "user",
Actions: []string{"create", "read"},
})
permissions = append(permissions, tokenutils.Permission{
Module: "driver",
Actions: []string{"read"},
})
username := "jondoe"
userID := 1
userStatus := 1
token, err := tokenutils.CreateToken(userID, userStatus, username, tokenutils.Role{
Name: "admin",
Permission: permissions,
})
if err != nil {
fmt.Printf("invalid token got error %s", err.Error())
return
}
if len(token) == 0 {
fmt.Printf("invalid token")
} else {
fmt.Printf("Got token" + token)
}
}package mytest
import (
tokenutils "github.com/mudphilo/gwt"
"fmt"
)
func DecodeToken(token string) {
claim, err := tokenutils.TokenValidation(token)
if err != nil {
fmt.Printf("invalid token")
} else {
fmt.Println(claim.UserId)
}
}To check permissions we supply the token, module, action and scope
package mytest
import (
tokenutils "github.com/mudphilo/gwt"
"fmt"
)
func CheckPermission(token string) {
statusCheck := tokenutils.HasPermission(token, "location", "read", "own")
if statusCheck {
fmt.Printf("Token does not have permission to read own location")
} else {
fmt.Printf("Token has permission to read own location")
}
}
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