UUID generation for windows
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@ -1,4 +1,4 @@
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#include "hwuid.h"
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#include "./hwuid.h"
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#include <tomcrypt.h>
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#include <array>
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#include <fstream>
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@ -94,15 +94,105 @@ inline bool generate_uuid(std::string& result, uint32_t& check_sum) {
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}
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return true;
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}
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#else
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#error Implement me!
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#include "./smbios.h"
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#include <Windows.h>
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#include <sysinfoapi.h>
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#include <intrin.h>
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using namespace std;
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//https://www.dmtf.org/sites/default/files/standards/documents/DSP0134_2.7.1.pdf
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int get_uuid(uint8_t* uuid) {
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unique_ptr<SMBIOSDataHeader, decltype(::free)*> smbios_data{ nullptr, ::free };
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size_t smbios_size = 0;
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size_t bytes_written = 0;
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// Query size of SMBIOS data.
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smbios_size = GetSystemFirmwareTable('RSMB', 0, nullptr, 0);
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smbios_data.reset((SMBIOSDataHeader*) malloc(smbios_size));
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if (!smbios_data) return -1; //failed to allocate memory
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bytes_written = GetSystemFirmwareTable('RSMB', 0, &*smbios_data, smbios_size);
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if (smbios_size != bytes_written) return -2; //failed to read the firmware table
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if (smbios_data->length > bytes_written - SMBIOSDataHeaderLength) return -3; //invalid length
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//Lets iterate over the headers:
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uint8_t* ptr = &smbios_data->table_data;
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SMBIOSEntryHeader* header;
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while (true) {
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header = (SMBIOSEntryHeader*) ptr;
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if (header->type == 127 && header->length == 4) {
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break; //End marker
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}
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if (header->type == 1) {
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//Type 1: System Information
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if (header->length < 0x18) {
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//If version is under 2.1 no uuid is set!
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//TODO: Check before for the version?
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return -4; //system information table is too short
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}
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memcpy(uuid, ptr + 0x08, 16);
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return 0;
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}
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ptr = ptr + header->length; // point to struct end
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while (0 != (*ptr | *(ptr + 1)) && *ptr < (uint8_t) &*smbios_data + smbios_data->length)
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ptr++; // skip string area
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ptr += 2;
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if (ptr >= (uint8_t*) &*smbios_data + smbios_data->length - 2)
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break;
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}
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return -6;
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}
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uint32_t calculate_cpu_hash() {
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int cpuinfo[4] = { 0, 0, 0, 0 };
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__cpuid(cpuinfo, 0);
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uint32_t hash = 0;
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auto ptr = (uint32_t*) (&cpuinfo[0]);
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for (uint32_t i = 0; i < 4; i++)
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hash += ptr[i];
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return hash;
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}
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inline bool generate_uuid(std::string& result, uint32_t& check_sum) {
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uint8_t buffer[16];
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auto code = get_uuid(buffer);
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if(code != 0) {
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memcpy(buffer, "DDDDCCCCBBBBAAAA", 16); /* Reversed to linux (just for the foxic) */
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buffer[15] = code; /* So we could get the error code */
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}
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auto cpu_hash = calculate_cpu_hash();
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auto it = (uint32_t*) buffer;
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for(int i = 0; i < 4; i++)
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*it++ = cpu_hash;
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result = base64::encode((char*) buffer, 16);
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{
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crc32_state state;
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crc32_init(&state);
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crc32_update(&state, (u_char*) result.data(), result.length());
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crc32_finish(&state, &check_sum, sizeof(check_sum));
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}
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return true;
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}
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#endif
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inline bool check_uuid(std::string& uuid, uint32_t check_sum) {
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crc32_state state;
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crc32_init(&state);
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crc32_update(&state, (u_char*) uuid.data(), uuid.length());
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crc32_update(&state, (uint8_t*) uuid.data(), uuid.length());
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uint32_t result;
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crc32_finish(&state, &result, sizeof(result));
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@ -126,4 +216,5 @@ int main() {
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return 1;
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}
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//ADaX2mIRrC1uv83h
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//ADaX2mIRrC1uv83h
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//NEg5KzRIOSs0SDkrNEg5Kw==
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34
native/serverconnection/src/smbios.h
Normal file
34
native/serverconnection/src/smbios.h
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@ -0,0 +1,34 @@
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#pragma once
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#include <cstdint>
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#pragma pack(push)
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#pragma pack(1)
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typedef struct _SMBIOSDataHeader
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{
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uint8_t _unused;
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uint8_t major_version;
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uint8_t minor_version;
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uint8_t dmi_revision;
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uint32_t length;
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uint8_t table_data;
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} SMBIOSDataHeader;
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static constexpr size_t SMBIOSDataHeaderLength = 8;
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static_assert(sizeof(SMBIOSDataHeader) == SMBIOSDataHeaderLength + 1, "invalid struct size");
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typedef struct _SMBIOSEntryHeader
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{
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uint8_t type;
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uint8_t length;
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uint16_t header;
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uint8_t data;
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} SMBIOSEntryHeader;
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static constexpr size_t SMBIOSEntryHeaderLength = 4;
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static_assert(sizeof(SMBIOSEntryHeader) == SMBIOSEntryHeaderLength + 1, "invalid struct size");
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#pragma pack(pop)
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