Role Based Security

  • Thread starter Thread starter Martin Eckart
  • Start date Start date
M

Martin Eckart

Hi NG,

I am about to start development of the Security part of a big application.
The requirements are that users must be assigned to roles and the roles then
can be configured to access features.

The features are a set of methods in C# which will be defined once before
rollout. The assignment which roles can access those features are
configurable in an xml file.

I would like to use Role Based Security functionality from the .NET
Framework but have not found anything yet about how to make the following
call depending on an external file/service:
[PrincipalPermissionAttribute(SecurityAction.Demand, Name = "MyUser", Role =
"User")]
I can get the current user form my database, but I don't know how to put a
placeholder here for the Role and replace it then with the value from the
configuration file.

Any hints?

Thanks,
Martin
 
Personally...I created my own IPrincipal interface (and concrete
implementation).
I decided to go to a RIGHTS based model.

The below interface has met my needs, 100% of the time.


I feel the "Roles" based system kinda is lacking a tad. Most people can
make it work.
One guy (at a user group meeting) told me he uses "rights" anywhere the word
"role" appears.
(Aka, an artficial swap out).




public interface IRolesAndRightsPrincipal :
System.Security.Principal.IPrincipal
{

bool IsInRole(System.Guid role);

bool IsInAnyRole(System.Guid[] roles);

bool IsInAllRoles(System.Guid[] roles);

bool HasRight(System.Guid right);

bool HasAnyRight(System.Guid[] rights);

bool HasAllRights(System.Guid[] rights);


ISecurityRoleCollection AllRoles //and ISecurityRole is just a Guid
and a Name simple object in my world
{
get;
}

ISecurityRightCollection AllRights//and ISecurityRight is just a
Guid and a Name simple object in my world
{
get;
}


}
 
Thanks sloan, great hints.

One more question: I assume you then use the Demand() method of the
PrincipalPermission class. Are you implementing your own Demand() method?
How would you do that, sonce Princ.Permission is sealed?

sloan said:
Personally...I created my own IPrincipal interface (and concrete
implementation).
I decided to go to a RIGHTS based model.

The below interface has met my needs, 100% of the time.


I feel the "Roles" based system kinda is lacking a tad. Most people can
make it work.
One guy (at a user group meeting) told me he uses "rights" anywhere the
word "role" appears.
(Aka, an artficial swap out).




public interface IRolesAndRightsPrincipal :
System.Security.Principal.IPrincipal
{

bool IsInRole(System.Guid role);

bool IsInAnyRole(System.Guid[] roles);

bool IsInAllRoles(System.Guid[] roles);

bool HasRight(System.Guid right);

bool HasAnyRight(System.Guid[] rights);

bool HasAllRights(System.Guid[] rights);


ISecurityRoleCollection AllRoles //and ISecurityRole is just a Guid
and a Name simple object in my world
{
get;
}

ISecurityRightCollection AllRights//and ISecurityRight is just a
Guid and a Name simple object in my world
{
get;
}


}





Martin Eckart said:
Hi NG,

I am about to start development of the Security part of a big
application. The requirements are that users must be assigned to roles
and the roles then can be configured to access features.

The features are a set of methods in C# which will be defined once before
rollout. The assignment which roles can access those features are
configurable in an xml file.

I would like to use Role Based Security functionality from the .NET
Framework but have not found anything yet about how to make the following
call depending on an external file/service:
[PrincipalPermissionAttribute(SecurityAction.Demand, Name = "MyUser",
Role = "User")]
I can get the current user form my database, but I don't know how to put
a placeholder here for the Role and replace it then with the value from
the configuration file.

Any hints?

Thanks,
Martin
Click to expand...
Click to expand...
 
No, I don't implement/use the Demand() method.



Martin Eckart said:
Thanks sloan, great hints.

One more question: I assume you then use the Demand() method of the
PrincipalPermission class. Are you implementing your own Demand() method?
How would you do that, sonce Princ.Permission is sealed?

sloan said:
Personally...I created my own IPrincipal interface (and concrete
implementation).
I decided to go to a RIGHTS based model.

The below interface has met my needs, 100% of the time.


I feel the "Roles" based system kinda is lacking a tad. Most people can
make it work.
One guy (at a user group meeting) told me he uses "rights" anywhere the
word "role" appears.
(Aka, an artficial swap out).




public interface IRolesAndRightsPrincipal :
System.Security.Principal.IPrincipal
{

bool IsInRole(System.Guid role);

bool IsInAnyRole(System.Guid[] roles);

bool IsInAllRoles(System.Guid[] roles);

bool HasRight(System.Guid right);

bool HasAnyRight(System.Guid[] rights);

bool HasAllRights(System.Guid[] rights);


ISecurityRoleCollection AllRoles //and ISecurityRole is just a
Guid and a Name simple object in my world
{
get;
}

ISecurityRightCollection AllRights//and ISecurityRight is just a
Guid and a Name simple object in my world
{
get;
}


}





Martin Eckart said:
Hi NG,

I am about to start development of the Security part of a big
application. The requirements are that users must be assigned to roles
and the roles then can be configured to access features.

The features are a set of methods in C# which will be defined once
before rollout. The assignment which roles can access those features are
configurable in an xml file.

I would like to use Role Based Security functionality from the .NET
Framework but have not found anything yet about how to make the
following call depending on an external file/service:
[PrincipalPermissionAttribute(SecurityAction.Demand, Name = "MyUser",
Role = "User")]
I can get the current user form my database, but I don't know how to put
a placeholder here for the Role and replace it then with the value from
the configuration file.

Any hints?

Thanks,
Martin
Click to expand...
Click to expand...
Click to expand...
 
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