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main.go
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main.go
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package main
import (
"flag"
"fmt"
"log"
"os"
"strings"
"text/tabwriter"
"github.com/zpatrick/rbac"
)
const target = "a1"
func main() {
roleName := flag.String("role", "guest", "the role to use")
flag.Parse()
// assign a role
var role rbac.Role
switch r := strings.ToLower(*roleName); r {
case "guest":
role = NewGuestRole()
case "admin":
role = NewAdminRole()
default:
log.Fatalf("Role '%s' not recognized. Only 'guest' or 'admin' may be used.", r)
}
// calculate role permissions
canCreate, err := role.Can("CreateArticle", "")
if err != nil {
log.Fatal(err)
}
canRead, err := role.Can("ReadArticle", target)
if err != nil {
log.Fatal(err)
}
canEdit, err := role.Can("EditArticle", target)
if err != nil {
log.Fatal(err)
}
canDelete, err := role.Can("DeleteArticle", target)
if err != nil {
log.Fatal(err)
}
canRate, err := role.Can("RateArticle", target)
if err != nil {
log.Fatal(err)
}
// print role permissions
w := tabwriter.NewWriter(os.Stdout, 20, 4, 0, ' ', 0)
fmt.Fprintf(w, "Role: %s\n", role.RoleID)
fmt.Fprintln(w, "Action\tArticleID\tAllowed")
fmt.Fprintln(w, "-----------------------------------------------")
fmt.Fprintf(w, "CreateArticle\t-\t%t\n", canCreate)
fmt.Fprintf(w, "ReadArticle\t%s\t%t\n", target, canRead)
fmt.Fprintf(w, "EditArticle\t%s\t%t\n", target, canEdit)
fmt.Fprintf(w, "DeleteArticle\t%s\t%t\n", target, canDelete)
fmt.Fprintf(w, "RateArticle\t%s\t%t\n", target, canRate)
w.Flush()
}