Botan 2.13.0 Crypto and TLS for C++11

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uuid.cpp
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1 /*
2 * UUID type
3 * (C) 2015,2018 Jack Lloyd
4 *
5 * Botan is released under the Simplified BSD License (see license.txt)
6 */
7
8 #include <botan/uuid.h>
9 #include <botan/rng.h>
10 #include <botan/hex.h>
11 #include <sstream>
12
13 namespace Botan {
14
15 UUID::UUID(RandomNumberGenerator& rng)
16 {
17 m_uuid.resize(16);
18 rng.randomize(m_uuid.data(), m_uuid.size());
19
20 // Mark as a random v4 UUID (RFC 4122 sec 4.4)
21 m_uuid[6] = 0x40 | (m_uuid[6] & 0x0F);
22
23 // Set reserved bits
24 m_uuid[8] = 0x80 | (m_uuid[8] & 0x3F);
25 }
26
27 UUID::UUID(const std::vector<uint8_t>& blob)
28 {
29 if(blob.size() != 16)
30 {
31 throw Invalid_Argument("Bad UUID blob " + hex_encode(blob));
32 }
33
34 m_uuid = blob;
35 }
36
37 UUID::UUID(const std::string& uuid_str)
38 {
39 if(uuid_str.size() != 36 ||
40 uuid_str[8] != '-' ||
41 uuid_str[13] != '-' ||
42 uuid_str[18] != '-' ||
43 uuid_str[23] != '-')
44 {
45 throw Invalid_Argument("Bad UUID '" + uuid_str + "'");
46 }
47
48 std::string just_hex;
49 for(size_t i = 0; i != uuid_str.size(); ++i)
50 {
51 char c = uuid_str[i];
52
53 if(c == '-')
54 continue;
55
56 just_hex += c;
57 }
58
59 m_uuid = hex_decode(just_hex);
60
61 if(m_uuid.size() != 16)
62 {
63 throw Invalid_Argument("Bad UUID '" + uuid_str + "'");
64 }
65 }
66
67 std::string UUID::to_string() const
68 {
69 if(is_valid() == false)
70 throw Invalid_State("UUID object is empty cannot convert to string");
71
72 std::string h = hex_encode(m_uuid);
73
74 h.insert(8, "-");
75 h.insert(13, "-");
76 h.insert(18, "-");
77 h.insert(23, "-");
78
79 return h;
80 }
81
82 }
Botan::hex_encode
void hex_encode(char output[], const uint8_t input[], size_t input_length, bool uppercase)
Definition: hex.cpp:14
Botan::Invalid_Argument
Definition: exceptn.h:136
Botan::RandomNumberGenerator
Definition: rng.h:24
Botan::RandomNumberGenerator::randomize
virtual void randomize(uint8_t output[], size_t length)=0
Botan::UUID::is_valid
bool is_valid() const
Definition: uuid.h:61
Botan::UUID::to_string
std::string to_string() const
Definition: uuid.cpp:67
Botan
Definition: alg_id.cpp:13
Botan::hex_decode
size_t hex_decode(uint8_t output[], const char input[], size_t input_length, size_t &input_consumed, bool ignore_ws)
Definition: hex.cpp:49
Botan::Invalid_State
Definition: exceptn.h:215
Botan::UUID::UUID
UUID()
Definition: uuid.h:27