Add command line utility for querying LDAP and manual testing

.gitignore

@@ -0,0 +1 @@
+test.sh

cmd/main.go

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+package main
+
+import (
+	"flag"
+	"log"
+
+	"github.com/jtblin/go-ldap-client"
+)
+
+var base, bindDN, bindPassword, groupFilter, host, password, serverName, userFilter, username string
+var port int
+var useSSL bool
+
+type server struct{}
+
+func main() {
+	flag.Parse()
+
+	client := &ldap.LDAPClient{
+		Base:         base,
+		Host:         host,
+		Port:         port,
+		UseSSL:       useSSL,
+		BindDN:       bindDN,
+		BindPassword: bindPassword,
+		UserFilter:   userFilter,
+		GroupFilter:  groupFilter,
+		Attributes:   []string{"givenName", "sn", "mail", "uid"},
+		ServerName:   serverName,
+	}
+	defer client.Close()
+
+	ok, user, err := client.Authenticate(username, password)
+	if err != nil {
+		log.Fatalf("Error authenticating user %s: %+v", username, err)
+	}
+	if !ok {
+		log.Fatalf("Authenticating failed for user %s", username)
+	}
+	log.Printf("User: %+v", user)
+
+	groups, err := client.GetGroupsOfUser(username)
+	if err != nil {
+		log.Fatalf("Error getting groups for user %s: %+v", username, err)
+	}
+	log.Printf("Groups: %+v", groups)
+}
+
+func init() {
+	flag.StringVar(&base, "base", "dc=example,dc=com", "Base LDAP")
+	flag.StringVar(&bindDN, "bind-dn", "uid=readonlysuer,ou=People,dc=example,dc=com", "Bind DN")
+	flag.StringVar(&bindPassword, "bind-pwd", "readonlypassword", "Bind password")
+	flag.StringVar(&groupFilter, "group-filter", "(memberUid=%s)", "Group filter")
+	flag.StringVar(&host, "host", "ldap.example.com", "LDAP host")
+	flag.StringVar(&password, "password", "", "Password")
+	flag.IntVar(&port, "port", 389, "LDAP port")
+	flag.StringVar(&userFilter, "user-filter", "(uid=%s)", "User filter")
+	flag.StringVar(&username, "username", "", "Username")
+	flag.StringVar(&serverName, "server-name", "", "Server name for SSL (if use-ssl is set)")
+	flag.BoolVar(&useSSL, "use-ssl", false, "Use SSL")
+}