public void Union_Unrestricted()
{
// Union with unrestricted is unrestricted
StorePermission sp1 = new StorePermission(PermissionState.Unrestricted);
StorePermission sp2 = new StorePermission(PermissionState.None);
// a. source (this) is unrestricted
for (int i = 0; i < (int)StorePermissionFlags.AllFlags; i++)
{
// 8 isn't a valid value (so we exclude it from the rest of the loop)
if ((i & 8) == 8)
{
continue;
}
sp2.Flags = (StorePermissionFlags)i;
StorePermission union = (StorePermission)sp1.Union(sp2);
Assert.IsTrue(union.IsUnrestricted(), "target " + sp2.Flags.ToString());
}
// b. destination (target) is unrestricted
for (int i = 0; i < (int)StorePermissionFlags.AllFlags; i++)
{
// 8 isn't a valid value (so we exclude it from the rest of the loop)
if ((i & 8) == 8)
{
continue;
}
sp2.Flags = (StorePermissionFlags)i;
StorePermission union = (StorePermission)sp2.Union(sp1);
Assert.IsTrue(union.IsUnrestricted(), "source " + sp2.Flags.ToString());
}
}
public void Union_Self()
{
StorePermission sp = new StorePermission(PermissionState.None);
StorePermission union = (StorePermission)sp.Union(sp);
Assert.IsNull(union, "NoFlags");
for (int i = 1; i < (int)StorePermissionFlags.AllFlags; i++)
{
// 8 isn't a valid value (so we exclude it from the rest of the loop)
if ((i & 8) == 8)
{
continue;
}
sp.Flags = (StorePermissionFlags)i;
union = (StorePermission)sp.Union(sp);
Assert.AreEqual(sp.Flags, union.Flags, sp.Flags.ToString());
}
}
//</Snippet8>
// The following method is intended to demonstrate only the behavior of
// StorePermission class members,and not their practical usage. Most properties
// and methods in this class are used for the resolution and enforcement of
// security policy by the security infrastructure code.
private static void ShowMembers()
{
Console.WriteLine("Creating first permission with Flags = OpenStore.");
StorePermission sp1 = new StorePermission(StorePermissionFlags.OpenStore);
Console.WriteLine("Creating second permission with Flags = AllFlags.");
StorePermission sp2 = new StorePermission(StorePermissionFlags.AllFlags);
Console.WriteLine("Creating third permission as Unrestricted.");
//<Snippet9>
StorePermission sp3 = new StorePermission(PermissionState.Unrestricted);
//</Snippet9>
Console.WriteLine("Creating fourth permission with a permission state of none.");
StorePermission sp4 = new StorePermission(PermissionState.None);
//<Snippet3>
bool rc = sp2.IsSubsetOf(sp3);
Console.WriteLine("Is the permission with complete store access (AllFlags) a subset of \n" +
"\tthe permission with an Unrestricted permission state? " + (rc ? "Yes" : "No"));
rc = sp1.IsSubsetOf(sp2);
Console.WriteLine("Is the permission with OpenStore access a subset of the permission with \n" +
"\tcomplete store access (AllFlags)? " + (rc ? "Yes" : "No"));
//</Snippet3>
//<Snippet4>
rc = sp3.IsUnrestricted();
Console.WriteLine("Is the third permission unrestricted? " + (rc ? "Yes" : "No"));
//</Snippet4>
//<Snippet5>
Console.WriteLine("Copying the second permission to the fourth permission.");
sp4 = (StorePermission)sp2.Copy();
rc = sp4.Equals(sp2);
Console.WriteLine("Is the fourth permission equal to the second permission? " + (rc ? "Yes" : "No"));
//</Snippet5>
//<Snippet10>
Console.WriteLine("Creating the intersection of the second and first permissions.");
sp4 = (StorePermission)sp2.Intersect(sp1);
Console.WriteLine("Value of the Flags property is: " + sp4.Flags.ToString());
//</Snippet10>
//<Snippet6>
Console.WriteLine("Creating the union of the second and first permissions.");
sp4 = (StorePermission)sp2.Union(sp1);
Console.WriteLine("Result of the union of the second permission with the first: " + sp4.Flags);
//</Snippet6>
//<Snippet7>
Console.WriteLine("Using an XML roundtrip to reset the fourth permission.");
sp4.FromXml(sp2.ToXml());
rc = sp4.Equals(sp2);
Console.WriteLine("Does the XML roundtrip result equal the original permission? " + (rc ? "Yes" : "No"));
//</Snippet7>
}
public void Union_Null()
{
StorePermission sp = new StorePermission(PermissionState.None);
// Union with null is a simple copy
for (int i = 1; i < (int)StorePermissionFlags.AllFlags; i++)
{
// 8 isn't a valid value (so we exclude it from the rest of the loop)
if ((i & 8) == 8)
{
continue;
}
sp.Flags = (StorePermissionFlags)i;
StorePermission union = (StorePermission)sp.Union(null);
Assert.AreEqual(sp.Flags, union.Flags, sp.Flags.ToString());
}
// except fot NoFlags (which returns null)
sp.Flags = StorePermissionFlags.NoFlags;
Assert.IsNull(sp.Union(null), "NoFlags");
}
public void Union_None()
{
// Union with none is same
StorePermission sp1 = new StorePermission(PermissionState.None);
StorePermission sp2 = new StorePermission(PermissionState.None);
StorePermission union = (StorePermission)sp1.Union(sp1);
Assert.IsNull(union, "NoFlags");
for (int i = 1; i < (int)StorePermissionFlags.AllFlags; i++)
{
// 8 isn't a valid value (so we exclude it from the rest of the loop)
if ((i & 8) == 8)
{
continue;
}
sp2.Flags = (StorePermissionFlags)i;
union = (StorePermission)sp1.Union(sp2);
Assert.IsFalse(union.IsUnrestricted(), "target.Unrestricted " + sp2.Flags.ToString());
Assert.AreEqual(sp2.Flags, union.Flags, "target.Level " + sp2.Flags.ToString());
union = (StorePermission)sp2.Union(sp1);
Assert.IsFalse(union.IsUnrestricted(), "source.Unrestricted " + sp2.Flags.ToString());
Assert.AreEqual(sp2.Flags, union.Flags, "source.Level " + sp2.Flags.ToString());
}
sp2.Flags = StorePermissionFlags.AllFlags;
union = (StorePermission)sp1.Union(sp2);
Assert.IsTrue(union.IsUnrestricted(), "target.Unrestricted Unrestricted");
Assert.AreEqual(StorePermissionFlags.AllFlags, union.Flags, "target.Level Unrestricted");
union = (StorePermission)sp2.Union(sp1);
Assert.IsTrue(union.IsUnrestricted(), "source.Unrestricted Unrestricted");
Assert.AreEqual(StorePermissionFlags.AllFlags, union.Flags, "source.Level Unrestricted");
}
public void ConstructorLevel_Deny_Unrestricted()
{
StorePermission p = new StorePermission(StorePermissionFlags.AllFlags);
Assert.AreEqual(StorePermissionFlags.AllFlags, p.Flags, "Flags");
Assert.IsTrue(p.IsUnrestricted(), "IsUnrestricted");
Assert.IsNotNull(p.Copy(), "Copy");
SecurityElement se = p.ToXml();
Assert.IsNotNull(se, "ToXml");
p.FromXml(se);
Assert.IsNotNull(p.Intersect(p), "Intersect");
Assert.IsTrue(p.IsSubsetOf(p), "IsSubsetOf");
Assert.IsNotNull(p.Union(p), "Union");
}
public void ConstructorState_Deny_Unrestricted()
{
StorePermission p = new StorePermission(PermissionState.None);
Assert.AreEqual(StorePermissionFlags.NoFlags, p.Flags, "Flags");
Assert.IsFalse(p.IsUnrestricted(), "IsUnrestricted");
SecurityElement se = p.ToXml();
Assert.IsNotNull(se, "ToXml");
p.FromXml(se);
Assert.IsTrue(p.IsSubsetOf(p), "IsSubsetOf");
// strange behaviour of Copy under MS fx 2.0 (returns null for NoFlags)
p.Copy();
p.Intersect(p);
p.Union(p);
}