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/*
* Copyright 2020-2022 The OSHI Project Contributors
* SPDX-License-Identifier: MIT
*/
package oshi.driver.linux;
import oshi.annotation.concurrent.ThreadSafe;
import oshi.util.ExecutingCommand;
import oshi.util.ParseUtil;
import oshi.util.tuples.Pair;
/**
* Utility to read info from {@code dmidecode}
*/
@ThreadSafe
public final class Dmidecode {
private Dmidecode() {
}
// $ sudo dmidecode -t bios
// # dmidecode 2.11
// SMBIOS 2.4 present.
//
// Handle 0x0000, DMI type 0, 24 bytes
// BIOS Information
// Vendor: Phoenix Technologies LTD
// Version: 6.00
// Release Date: 07/02/2015
// Address: 0xEA5E0
// Runtime Size: 88608 bytes
// ROM Size: 64 kB
// Characteristics:
// ISA is supported
// PCI is supported
// PC Card (PCMCIA) is supported
// PNP is supported
// APM is supported
// BIOS is upgradeable
// BIOS shadowing is allowed
// ESCD support is available
// Boot from CD is supported
// Selectable boot is supported
// EDD is supported
// Print screen service is supported (int 5h)
// 8042 keyboard services are supported (int 9h)
// Serial services are supported (int 14h)
// Printer services are supported (int 17h)
// CGA/mono video services are supported (int 10h)
// ACPI is supported
// Smart battery is supported
// BIOS boot specification is supported
// Function key-initiated network boot is supported
// Targeted content distribution is supported
// BIOS Revision: 4.6
// Firmware Revision: 0.0
/**
* Query the serial number from dmidecode
*
* @return The serial number if available, null otherwise
*/
public static String querySerialNumber() {
// If root privileges this will work
String marker = "Serial Number:";
for (String checkLine : ExecutingCommand.runNative("dmidecode -t system")) {
if (checkLine.contains(marker)) {
return checkLine.split(marker)[1].trim();
}
}
return null;
}
/**
* Query the UUID from dmidecode
*
* @return The UUID if available, null otherwise
*/
public static String queryUUID() {
// If root privileges this will work
String marker = "UUID:";
for (String checkLine : ExecutingCommand.runNative("dmidecode -t system")) {
if (checkLine.contains(marker)) {
return checkLine.split(marker)[1].trim();
}
}
return null;
}
/**
* Query the name and revision from dmidecode
*
* @return The a pair containing the name and revision if available, null values in the pair otherwise
*/
public static Pair queryBiosNameRev() {
String biosName = null;
String revision = null;
final String biosMarker = "SMBIOS";
final String revMarker = "Bios Revision:";
// Requires root, may not return anything
for (final String checkLine : ExecutingCommand.runNative("dmidecode -t bios")) {
if (checkLine.contains(biosMarker)) {
String[] biosArr = ParseUtil.whitespaces.split(checkLine);
if (biosArr.length >= 2) {
biosName = biosArr[0] + " " + biosArr[1];
}
}
if (checkLine.contains(revMarker)) {
revision = checkLine.split(revMarker)[1].trim();
// SMBIOS should be first line so if we're here we are done iterating
break;
}
}
return new Pair<>(biosName, revision);
}
}