214 lines
7.9 KiB
C++
214 lines
7.9 KiB
C++
#include "TessesFramework/Uuid.hpp"
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#include "TessesFramework/Http/HttpUtils.hpp"
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#include "TessesFramework/Crypto/Crypto.hpp"
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namespace Tesses::Framework {
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Uuid Uuid::Generate()
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{
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//xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx
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Uuid uuid;
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Uuid::Generate(uuid);
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return uuid;
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}
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void Uuid::Generate(Uuid& uuid)
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{
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std::vector<uint8_t> bytes(16);
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Crypto::RandomBytes(bytes, "TF_UUID");
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uuid.time_low = (uint32_t)bytes[0];
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uuid.time_low |= (uint32_t)bytes[1] << 8;
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uuid.time_low |= (uint32_t)bytes[2] << 16;
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uuid.time_low |= (uint32_t)bytes[3] << 24;
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uuid.time_mid = (uint16_t)bytes[4];
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uuid.time_mid |= (uint16_t)bytes[5] << 8;
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uuid.time_hi_and_version = (uint16_t)bytes[6];
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uuid.time_hi_and_version |= (uint16_t)bytes[7] << 8;
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uuid.clock_seq_hi_and_reserved = bytes[8];
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uuid.clock_seq_low = bytes[9];
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for(size_t i = 0; i < 6; i++)
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{
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uuid.node[i] = bytes[i+10];
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}
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uuid.time_hi_and_version &= ~0x00F0;
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uuid.time_hi_and_version |= 0x0040;
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uuid.clock_seq_hi_and_reserved &= ~0b11000000;
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uuid.clock_seq_hi_and_reserved |= 0b10000000;
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}
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bool Uuid::TryParse(std::string text, Uuid& uuid)
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{
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std::array<uint8_t,32> hex_digits;
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size_t hex_offset = 0;
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size_t text_offset = 0;
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for(; text_offset < text.size(); text_offset++)
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{
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if(text[text_offset] == '{' && (text_offset != 0 || hex_offset != 0))
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return false;
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if(text[text_offset] == '}' && hex_offset < 32)
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return false;
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if(text[text_offset] == '-' && hex_offset != 8 && hex_offset != 12 && hex_offset != 16 && hex_offset != 20)
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return false;
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if((text[text_offset] >= 'A' && text[text_offset] <= 'F') || (text[text_offset] >= 'a' && text[text_offset] <= 'f') || text[text_offset] >= '0' && text[text_offset] <= '9')
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{
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if(hex_offset >= 32) return false;
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hex_digits[hex_offset] = Http::HttpUtils::HexToNibble(text[text_offset]);
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hex_offset++;
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}
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else return false;
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}
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uint8_t b = hex_digits[0] << 4 | hex_digits[1];
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uuid.time_low = (uint32_t)b;
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b = hex_digits[2] << 4 | hex_digits[3];
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uuid.time_low |= (uint32_t)b << 8;
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b = hex_digits[4] << 4 | hex_digits[5];
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uuid.time_low |= (uint32_t)b << 16;
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b = hex_digits[6] << 4 | hex_digits[7];
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uuid.time_low |= (uint32_t)b << 24;
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b = hex_digits[8] << 4 | hex_digits[9];
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uuid.time_mid = (uint16_t)b;
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b = hex_digits[10] << 4 | hex_digits[11];
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uuid.time_mid |= (uint16_t)b << 8;
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b = hex_digits[12] << 4 | hex_digits[13];
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uuid.time_hi_and_version = (uint16_t)b;
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b = hex_digits[14] << 4 | hex_digits[15];
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uuid.time_hi_and_version |= (uint16_t)b << 8;
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uuid.clock_seq_hi_and_reserved = hex_digits[16] << 4 | hex_digits[17];
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uuid.clock_seq_low = hex_digits[18] << 4 | hex_digits[19];
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for(size_t i = 0; i < 6; i++)
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{
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uuid.node[i] = hex_digits[20+(i*2)] << 4 | hex_digits[21+(i*2)];
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}
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return true;
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}
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//9c4994e7-3c82-4c30-a459-8fdcd960b4ac
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std::string Uuid::ToString(UuidStringifyConfig cfg) const
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{
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bool hasCurly = ((int)cfg & (int)UuidStringifyConfig::HasCurly) != 0;
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bool isUppercase = ((int)cfg & (int)UuidStringifyConfig::IsUppercase) != 0;
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bool hasDash = ((int)cfg & (int)UuidStringifyConfig::HasDashes) != 0;
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std::string uuid_str = "";
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if(hasCurly)
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uuid_str += "{";
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uint8_t byte = (uint8_t)(this->time_low & 0xFF);
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uuid_str += Http::HttpUtils::NibbleToHex(byte>>4,isUppercase);
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uuid_str += Http::HttpUtils::NibbleToHex(byte,isUppercase);
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byte = (uint8_t)((this->time_low >> 8) & 0xFF);
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uuid_str += Http::HttpUtils::NibbleToHex(byte>>4,isUppercase);
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uuid_str += Http::HttpUtils::NibbleToHex(byte,isUppercase);
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byte = (uint8_t)((this->time_low >> 16) & 0xFF);
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uuid_str += Http::HttpUtils::NibbleToHex(byte>>4,isUppercase);
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uuid_str += Http::HttpUtils::NibbleToHex(byte,isUppercase);
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byte = (uint8_t)((this->time_low >> 24) & 0xFF);
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uuid_str += Http::HttpUtils::NibbleToHex(byte>>4,isUppercase);
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uuid_str += Http::HttpUtils::NibbleToHex(byte,isUppercase);
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if(hasDash)
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uuid_str += "-";
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byte = (uint8_t)(this->time_mid & 0xFF);
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uuid_str += Http::HttpUtils::NibbleToHex(byte>>4,isUppercase);
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uuid_str += Http::HttpUtils::NibbleToHex(byte,isUppercase);
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byte = (uint8_t)((this->time_mid >> 8) & 0xFF);
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uuid_str += Http::HttpUtils::NibbleToHex(byte>>4,isUppercase);
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uuid_str += Http::HttpUtils::NibbleToHex(byte,isUppercase);
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if(hasDash)
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uuid_str += "-";
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byte = (uint8_t)(this->time_hi_and_version & 0xFF);
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uuid_str += Http::HttpUtils::NibbleToHex(byte>>4,isUppercase);
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uuid_str += Http::HttpUtils::NibbleToHex(byte,isUppercase);
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byte = (uint8_t)((this->time_hi_and_version >> 8) & 0xFF);
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uuid_str += Http::HttpUtils::NibbleToHex(byte>>4,isUppercase);
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uuid_str += Http::HttpUtils::NibbleToHex(byte,isUppercase);
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if(hasDash)
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uuid_str += "-";
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uuid_str += Http::HttpUtils::NibbleToHex(this->clock_seq_hi_and_reserved>>4,isUppercase);
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uuid_str += Http::HttpUtils::NibbleToHex(this->clock_seq_hi_and_reserved,isUppercase);
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uuid_str += Http::HttpUtils::NibbleToHex(this->clock_seq_low>>4,isUppercase);
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uuid_str += Http::HttpUtils::NibbleToHex(this->clock_seq_low,isUppercase);
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if(hasDash)
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uuid_str += "-";
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for(size_t i = 0; i < 6; i++)
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{
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byte = this->node[i];
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uuid_str += Http::HttpUtils::NibbleToHex(byte>>4,isUppercase);
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uuid_str += Http::HttpUtils::NibbleToHex(byte,isUppercase);
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}
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if(hasCurly)
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uuid_str += "}";
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return uuid_str;
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}
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bool Uuid::IsEmpty() const
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{
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return this->time_low == 0 &&
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this->time_mid == 0 &&
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this->time_hi_and_version == 0 &&
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this->clock_seq_hi_and_reserved == 0 &&
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this->clock_seq_low == 0 &&
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this->node[0] == 0 &&
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this->node[1] == 0 &&
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this->node[2] == 0 &&
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this->node[3] == 0 &&
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this->node[4] == 0 &&
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this->node[5] == 0;
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}
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bool operator==(const Uuid& left, const Uuid& right)
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{
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return left.time_low == right.time_low &&
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left.time_mid == right.time_mid &&
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left.time_hi_and_version == right.time_hi_and_version &&
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left.clock_seq_hi_and_reserved == right.clock_seq_hi_and_reserved &&
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left.clock_seq_low == right.clock_seq_low &&
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left.node[0] == right.node[0] &&
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left.node[1] == right.node[1] &&
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left.node[2] == right.node[2] &&
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left.node[3] == right.node[3] &&
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left.node[4] == right.node[4] &&
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left.node[5] == right.node[5];
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}
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bool operator!=(const Uuid& left, const Uuid& right)
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{
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return left.time_low != right.time_low &&
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left.time_mid != right.time_mid &&
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left.time_hi_and_version != right.time_hi_and_version &&
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left.clock_seq_hi_and_reserved != right.clock_seq_hi_and_reserved &&
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left.clock_seq_low != right.clock_seq_low &&
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left.node[0] != right.node[0] &&
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left.node[1] != right.node[1] &&
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left.node[2] != right.node[2] &&
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left.node[3] != right.node[3] &&
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left.node[4] != right.node[4] &&
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left.node[5] != right.node[5];
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}
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} |