1/*
2 * Copyright (c) 2000-2004,2011,2014 Apple Inc. All Rights Reserved.
3 *
4 * @APPLE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. Please obtain a copy of the License at
10 * http://www.opensource.apple.com/apsl/ and read it before using this
11 * file.
12 *
13 * The Original Code and all software distributed under the License are
14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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18 * Please see the License for the specific language governing rights and
19 * limitations under the License.
20 *
21 * @APPLE_LICENSE_HEADER_END@
22 */
23
24
25//
26// hosts - value-semantics host identifier class
27//
28// @@@ use vector instead of set to preserve resolver-generated order?
29// @@@ preliminary implementation: at the very least, there'll be more subclasses (deferred, etc.)
30//
31#ifndef _H_HOSTS
32#define _H_HOSTS
33
34#include "ip++.h"
35#include <security_utilities/refcount.h>
36#include <set>
37
38
39namespace Security {
40namespace IPPlusPlus {
41
42
43//
44// Host identities
45//
46class Host {
47public:
48    Host(const char *form);
49    Host() { }
50
51    // equality is defined strongly: same host specification
52    bool operator == (const Host &other) const;
53    bool operator != (const Host &other) const	{ return !(*this == other); }
54    bool operator < (const Host &other) const;	// for STL sorting
55
56    // inclusion (<=) is defined semi-weakly: greater subsumes smaller, same access specs
57    bool operator <= (const Host &other) const;
58    bool operator >= (const Host &other) const	{ return other <= *this; }
59
60    string name() const					{ return mSpec->name(); }
61    set<IPAddress> addresses() const	{ return mSpec->addresses(); }
62
63public:
64    class Spec : public RefCount {
65    public:
66        virtual ~Spec() { }
67
68        virtual set<IPAddress> addresses() const = 0;
69        virtual string name() const = 0;
70
71    private:
72    };
73
74private:
75    RefPointer<Spec> mSpec;
76};
77
78}	// end namespace IPPlusPlus
79}	// end namespace Security
80
81
82#endif /* _H_HOSTS */
83