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/*
* UUID type
* (C) 2015 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#include <botan/secmem.h>
#include <botan/hex.h>
#include <sstream>
namespace Botan {
// TODO: move to util?
class UUID
{
public:
// Represents an unassigned UUID object
UUID() : m_uuid(0) {}
UUID(RandomNumberGenerator& rng)
{
m_uuid.resize(16);
rng.randomize(m_uuid.data(), m_uuid.size());
// Mark as a random UUID (RFC 4122 sec 4.4)
m_uuid[6] = 0x40 | (m_uuid[6] & 0x0F);
// Set two reserved bits
m_uuid[8] = 0xC0 | (m_uuid[8] & 0x3F);
}
UUID(const std::vector<uint8_t>& blob)
{
if(blob.size() != 16)
{
throw Invalid_Argument("Bad UUID blob " + hex_encode(blob));
}
m_uuid = blob;
}
UUID(const std::string& uuid_str)
{
if(uuid_str.size() != 36 ||
uuid_str[8] != '-' ||
uuid_str[14] != '-' ||
uuid_str[19] != '-' ||
uuid_str[24] != '-')
{
throw Invalid_Argument("Bad UUID '" + uuid_str + "'");
}
std::string just_hex;
for(size_t i = 0; i != uuid_str.size(); ++i)
{
char c = uuid_str[i];
if(c == '-')
continue;
just_hex += c;
}
m_uuid = hex_decode(just_hex);
if(m_uuid.size() != 16)
{
throw Invalid_Argument("Bad UUID '" + uuid_str + "'");
}
}
std::string to_string() const
{
std::string h = hex_encode(m_uuid);
h.insert(8, "-");
h.insert(14, "-");
h.insert(19, "-");
h.insert(24, "-");
return h;
}
const std::vector<uint8_t> binary_value() const { return m_uuid; }
bool operator==(const UUID& other)
{
return m_uuid == other.m_uuid;
}
bool operator!=(const UUID& other) { return !(*this == other); }
bool is_valid() const { return m_uuid.size() == 16; }
private:
std::vector<uint8_t> m_uuid;
};
}
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