107 lines
3 KiB
C++
107 lines
3 KiB
C++
/* XMRig
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* Copyright (c) 2002-2006 Hugo Weber <address@hidden>
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* Copyright (c) 2018-2023 SChernykh <https://github.com/SChernykh>
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* Copyright (c) 2016-2023 XMRig <https://github.com/xmrig>, <support@xmrig.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "hw/dmi/DmiReader.h"
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#include "hw/dmi/DmiTools.h"
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#include <Carbon/Carbon.h>
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namespace xmrig {
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static int checksum(const uint8_t *buf, size_t len)
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{
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uint8_t sum = 0;
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for (size_t a = 0; a < len; a++) {
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sum += buf[a];
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}
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return (sum == 0);
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}
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static uint8_t *dmi_table(uint32_t base, uint32_t &len, io_service_t service)
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{
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CFMutableDictionaryRef properties = nullptr;
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if (IORegistryEntryCreateCFProperties(service, &properties, kCFAllocatorDefault, kNilOptions) != kIOReturnSuccess) {
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return nullptr;
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}
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CFDataRef data;
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uint8_t *buf = nullptr;
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if (CFDictionaryGetValueIfPresent(properties, CFSTR("SMBIOS"), (const void **)&data)) {
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assert(len == CFDataGetLength(data));
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len = CFDataGetLength(data);
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buf = reinterpret_cast<uint8_t *>(malloc(len));
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CFDataGetBytes(data, CFRangeMake(0, len), buf);
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}
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CFRelease(properties);
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return buf;
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}
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static uint8_t *smbios_decode(uint8_t *buf, uint32_t &size, uint32_t &version, io_service_t service)
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{
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if (buf[0x05] > 0x20 || !checksum(buf, buf[0x05]) || memcmp(buf + 0x10, "_DMI_", 5) != 0 || !checksum(buf + 0x10, 0x0F)) {
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return nullptr;
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}
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version = ((buf[0x06] << 8) + buf[0x07]) << 8;
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size = dmi_get<uint16_t>(buf + 0x16);
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return dmi_table(dmi_get<uint32_t>(buf + 0x18), size, service);
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}
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} // namespace xmrig
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bool xmrig::DmiReader::read()
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{
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mach_port_t port;
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IOMasterPort(MACH_PORT_NULL, &port);
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io_service_t service = IOServiceGetMatchingService(port, IOServiceMatching("AppleSMBIOS"));
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if (service == MACH_PORT_NULL) {
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return false;
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}
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CFDataRef data = reinterpret_cast<CFDataRef>(IORegistryEntryCreateCFProperty(service, CFSTR("SMBIOS-EPS"), kCFAllocatorDefault, kNilOptions));
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if (!data || CFDataGetLength(data) < 0x1f) {
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return false;
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}
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uint8_t buf[0x20]{};
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CFDataGetBytes(data, CFRangeMake(0, sizeof(buf) - 1), buf);
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CFRelease(data);
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auto smb = smbios_decode(buf, m_size, m_version, service);
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const bool rc = smb ? decode(smb) : false;
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IOObjectRelease(service);
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return rc;
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}
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