/src/botan/build/include/botan/tls_version.h
Line  | Count  | Source (jump to first uncovered line)  | 
1  |  | /*  | 
2  |  | * TLS Protocol Version Management  | 
3  |  | * (C) 2012 Jack Lloyd  | 
4  |  | *  | 
5  |  | * Botan is released under the Simplified BSD License (see license.txt)  | 
6  |  | */  | 
7  |  |  | 
8  |  | #ifndef BOTAN_TLS_PROTOCOL_VERSION_H_  | 
9  |  | #define BOTAN_TLS_PROTOCOL_VERSION_H_  | 
10  |  |  | 
11  |  | #include <botan/types.h>  | 
12  |  | #include <string>  | 
13  |  |  | 
14  |  | namespace Botan { | 
15  |  |  | 
16  |  | namespace TLS { | 
17  |  |  | 
18  |  | /**  | 
19  |  | * TLS Protocol Version  | 
20  |  | */  | 
21  |  | class BOTAN_PUBLIC_API(2,0) Protocol_Version final  | 
22  |  |    { | 
23  |  |    public:  | 
24  |  |       enum Version_Code { | 
25  |  |          TLS_V10            = 0x0301,  | 
26  |  |          TLS_V11            = 0x0302,  | 
27  |  |          TLS_V12            = 0x0303,  | 
28  |  |  | 
29  |  |          DTLS_V10           = 0xFEFF,  | 
30  |  |          DTLS_V12           = 0xFEFD  | 
31  |  |       };  | 
32  |  |  | 
33  |  |       /**  | 
34  |  |       * @return latest known TLS version  | 
35  |  |       */  | 
36  |  |       static Protocol_Version latest_tls_version()  | 
37  | 0  |          { | 
38  | 0  |          return Protocol_Version(TLS_V12);  | 
39  | 0  |          }  | 
40  |  |  | 
41  |  |       /**  | 
42  |  |       * @return latest known DTLS version  | 
43  |  |       */  | 
44  |  |       static Protocol_Version latest_dtls_version()  | 
45  | 0  |          { | 
46  | 0  |          return Protocol_Version(DTLS_V12);  | 
47  | 0  |          }  | 
48  |  |  | 
49  | 98.8k  |       Protocol_Version() : m_version(0) {} | 
50  |  |  | 
51  | 484k  |       explicit Protocol_Version(uint16_t code) : m_version(code) {} | 
52  |  |  | 
53  |  |       /**  | 
54  |  |       * @param named_version a specific named version of the protocol  | 
55  |  |       */  | 
56  |  |       Protocol_Version(Version_Code named_version) :  | 
57  | 291k  |          Protocol_Version(static_cast<uint16_t>(named_version)) {} | 
58  |  |  | 
59  |  |       /**  | 
60  |  |       * @param major the major version  | 
61  |  |       * @param minor the minor version  | 
62  |  |       */  | 
63  |  |       Protocol_Version(uint8_t major, uint8_t minor) :  | 
64  | 188k  |          Protocol_Version(static_cast<uint16_t>((static_cast<uint16_t>(major) << 8) | minor)) {} | 
65  |  |  | 
66  |  |       /**  | 
67  |  |       * @return true if this is a valid protocol version  | 
68  |  |       */  | 
69  | 30.3k  |       bool valid() const { return (m_version != 0); } | 
70  |  |  | 
71  |  |       /**  | 
72  |  |       * @return true if this is a protocol version we know about  | 
73  |  |       */  | 
74  |  |       bool known_version() const;  | 
75  |  |  | 
76  |  |       /**  | 
77  |  |       * @return major version of the protocol version  | 
78  |  |       */  | 
79  | 813k  |       uint8_t major_version() const { return static_cast<uint8_t>(m_version >> 8); } | 
80  |  |  | 
81  |  |       /**  | 
82  |  |       * @return minor version of the protocol version  | 
83  |  |       */  | 
84  | 150k  |       uint8_t minor_version() const { return static_cast<uint8_t>(m_version & 0xFF); } | 
85  |  |  | 
86  |  |       /**  | 
87  |  |       * @return the version code  | 
88  |  |       */  | 
89  | 0  |       uint16_t version_code() const { return m_version; } | 
90  |  |  | 
91  |  |       /**  | 
92  |  |       * @return human-readable description of this version  | 
93  |  |       */  | 
94  |  |       std::string to_string() const;  | 
95  |  |  | 
96  |  |       /**  | 
97  |  |       * @return true iff this is a DTLS version  | 
98  |  |       */  | 
99  |  |       bool is_datagram_protocol() const;  | 
100  |  |  | 
101  |  |       /**  | 
102  |  |       * @return true if this version supports negotiable signature algorithms  | 
103  |  |       */  | 
104  |  |       bool supports_negotiable_signature_algorithms() const;  | 
105  |  |  | 
106  |  |       /**  | 
107  |  |       * @return true if this version uses explicit IVs for block ciphers  | 
108  |  |       */  | 
109  |  |       bool supports_explicit_cbc_ivs() const;  | 
110  |  |  | 
111  |  |       /**  | 
112  |  |       * @return true if this version uses a ciphersuite specific PRF  | 
113  |  |       */  | 
114  |  |       bool supports_ciphersuite_specific_prf() const;  | 
115  |  |  | 
116  |  |       bool supports_aead_modes() const;  | 
117  |  |  | 
118  |  |       /**  | 
119  |  |       * @return if this version is equal to other  | 
120  |  |       */  | 
121  |  |       bool operator==(const Protocol_Version& other) const  | 
122  | 154k  |          { | 
123  | 154k  |          return (m_version == other.m_version);  | 
124  | 154k  |          }  | 
125  |  |  | 
126  |  |       /**  | 
127  |  |       * @return if this version is not equal to other  | 
128  |  |       */  | 
129  |  |       bool operator!=(const Protocol_Version& other) const  | 
130  | 10.5k  |          { | 
131  | 10.5k  |          return (m_version != other.m_version);  | 
132  | 10.5k  |          }  | 
133  |  |  | 
134  |  |       /**  | 
135  |  |       * @return if this version is later than other  | 
136  |  |       */  | 
137  |  |       bool operator>(const Protocol_Version& other) const;  | 
138  |  |  | 
139  |  |       /**  | 
140  |  |       * @return if this version is later than or equal to other  | 
141  |  |       */  | 
142  |  |       bool operator>=(const Protocol_Version& other) const  | 
143  | 17.6k  |          { | 
144  | 17.6k  |          return (*this == other || *this > other);  | 
145  | 17.6k  |          }  | 
146  |  |  | 
147  |  |    private:  | 
148  |  |       uint16_t m_version;  | 
149  |  |    };  | 
150  |  |  | 
151  |  | }  | 
152  |  |  | 
153  |  | }  | 
154  |  |  | 
155  |  | #endif  | 
156  |  |  |