/src/botan/src/lib/tls/tls_version.cpp
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 | | #include <botan/tls_version.h> |
9 | | #include <botan/tls_exceptn.h> |
10 | | |
11 | | namespace Botan { |
12 | | |
13 | | namespace TLS { |
14 | | |
15 | | std::string Protocol_Version::to_string() const |
16 | 122 | { |
17 | 122 | const uint8_t maj = major_version(); |
18 | 122 | const uint8_t min = minor_version(); |
19 | 122 | |
20 | 122 | if(maj == 3 && min == 0) |
21 | 0 | return "SSL v3"; |
22 | 122 | |
23 | 122 | if(maj == 3 && min >= 1) // TLS v1.x |
24 | 11 | return "TLS v1." + std::to_string(min-1); |
25 | 111 | |
26 | 111 | if(maj == 254) // DTLS 1.x |
27 | 5 | return "DTLS v1." + std::to_string(255 - min); |
28 | 106 | |
29 | 106 | // Some very new or very old protocol (or bogus data) |
30 | 106 | return "Unknown " + std::to_string(maj) + "." + std::to_string(min); |
31 | 106 | } |
32 | | |
33 | | bool Protocol_Version::is_datagram_protocol() const |
34 | 567k | { |
35 | 567k | return major_version() > 250; |
36 | 567k | } |
37 | | |
38 | | bool Protocol_Version::operator>(const Protocol_Version& other) const |
39 | 20.8k | { |
40 | 20.8k | if(this->is_datagram_protocol() != other.is_datagram_protocol()) |
41 | 7 | throw TLS_Exception(Alert::PROTOCOL_VERSION, |
42 | 7 | "Version comparing " + to_string() + |
43 | 7 | " with " + other.to_string()); |
44 | 20.8k | |
45 | 20.8k | if(this->is_datagram_protocol()) |
46 | 85 | return m_version < other.m_version; // goes backwards |
47 | 20.7k | |
48 | 20.7k | return m_version > other.m_version; |
49 | 20.7k | } |
50 | | |
51 | | bool Protocol_Version::known_version() const |
52 | 54.2k | { |
53 | 54.2k | return (m_version == Protocol_Version::TLS_V10 || |
54 | 54.2k | m_version == Protocol_Version::TLS_V11 || |
55 | 54.2k | m_version == Protocol_Version::TLS_V12 || |
56 | 54.2k | m_version == Protocol_Version::DTLS_V10 || |
57 | 54.2k | m_version == Protocol_Version::DTLS_V12); |
58 | 54.2k | } |
59 | | |
60 | | bool Protocol_Version::supports_negotiable_signature_algorithms() const |
61 | 6.91k | { |
62 | 6.91k | return (m_version != Protocol_Version::TLS_V10 && |
63 | 6.91k | m_version != Protocol_Version::TLS_V11 && |
64 | 6.91k | m_version != Protocol_Version::DTLS_V10); |
65 | 6.91k | } |
66 | | |
67 | | bool Protocol_Version::supports_explicit_cbc_ivs() const |
68 | 2.00k | { |
69 | 2.00k | return (m_version != Protocol_Version::TLS_V10); |
70 | 2.00k | } |
71 | | |
72 | | bool Protocol_Version::supports_ciphersuite_specific_prf() const |
73 | 18.9k | { |
74 | 18.9k | return (m_version != Protocol_Version::TLS_V10 && |
75 | 18.9k | m_version != Protocol_Version::TLS_V11 && |
76 | 18.9k | m_version != Protocol_Version::DTLS_V10); |
77 | 18.9k | } |
78 | | |
79 | | bool Protocol_Version::supports_aead_modes() const |
80 | 5.14M | { |
81 | 5.14M | return (m_version != Protocol_Version::TLS_V10 && |
82 | 5.14M | m_version != Protocol_Version::TLS_V11 && |
83 | 5.14M | m_version != Protocol_Version::DTLS_V10); |
84 | 5.14M | } |
85 | | |
86 | | } |
87 | | |
88 | | } |