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//
// System.Web.Configuration.AuthorizationConfig
//
// Authors:
// Gonzalo Paniagua Javier (gonzalo@ximian.com)
//
// (C) 2003 Ximian, Inc (http://www.ximian.com)
//
using System;
using System.Collections;
using System.Security.Principal;
using System.Web.UI;
namespace System.Web.Configuration
{
class AuthorizationConfig
{
AuthorizationConfig parent;
ArrayList list;
internal AuthorizationConfig (object parent)
{
this.parent = parent as AuthorizationConfig;
}
static string [] SplitAndTrim (string s)
{
if (s == null || s == "")
return null;
string [] all = s.Split (',');
for (int i = 0; i < all.Length; i++)
all [i] = all [i].Trim ();
return all;
}
static bool CheckWildcards (string [] values)
{
if (values == null)
return true;
foreach (string s in values) {
if (s == null || s.Length == 1)
continue;
if (s.IndexOf ('?') != -1 || s.IndexOf ('*') != -1)
return false;
}
return true;
}
bool Add (bool allow, string users, string roles, string verbs)
{
string [] allUsers = SplitAndTrim (users);
string [] allRoles = SplitAndTrim (roles);
string [] allVerbs = SplitAndTrim (verbs);
if (!CheckWildcards (allUsers) || !CheckWildcards (allRoles))
return false;
if (list == null)
list = new ArrayList ();
list.Add (new UserData (allow, allUsers, allRoles, allVerbs));
return true;
}
internal bool Allow (string users, string roles, string verbs)
{
return Add (true, users, roles, verbs);
}
internal bool Deny (string users, string roles, string verbs)
{
return Add (false, users, roles, verbs);
}
internal bool IsValidUser (IPrincipal user, string verb)
{
if (user == null)
return false;
if (list == null) {
if (parent != null)
return parent.IsValidUser (user, verb);
return true;
}
foreach (UserData data in list) {
if (data.Verbs != null && !data.CheckVerb (verb))
continue;
if ((data.Users !=null && data.CheckUser(user.Identity.Name)) ||
(data.Roles != null && data.CheckRole(user)))
return data.Allow;
}
if (parent != null)
return parent.IsValidUser (user, verb);
return true;
}
struct UserData
{
public bool Allow;
public string [] Users;
public string [] Roles;
public string [] Verbs;
public UserData (bool allow, string [] users, string [] roles, string [] verbs)
{
Allow = allow;
Users = users;
Roles = roles;
Verbs = verbs;
}
public bool CheckUser (string user)
{
foreach (string u in Users) {
if (String.Compare (u, user, true) == 0 ||
u == "*" ||
(u == "?" && user == ""))
return true;
}
return false;
}
public bool CheckRole (IPrincipal user)
{
foreach (string r in Roles) {
if (user.IsInRole (r))
return true;
}
return false;
}
public bool CheckVerb (string verb)
{
foreach (string u in Verbs) {
if (String.Compare (u, verb, true) == 0)
return true;
}
return false;
}
}
}
}
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