75 lines
2.1 KiB
Go
75 lines
2.1 KiB
Go
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// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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//go:build cgo && darwin && !ios
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package posture
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// #cgo LDFLAGS: -framework CoreFoundation -framework IOKit
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// #include <CoreFoundation/CoreFoundation.h>
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// #include <IOKit/IOKitLib.h>
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//
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// #if __MAC_OS_X_VERSION_MIN_REQUIRED < 120000
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// #define kIOMainPortDefault kIOMasterPortDefault
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// #endif
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//
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// const char *
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// getSerialNumber()
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// {
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// CFMutableDictionaryRef matching = IOServiceMatching("IOPlatformExpertDevice");
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// if (!matching) {
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// return "err: failed to create dictionary to match IOServices";
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// }
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//
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// io_service_t service = IOServiceGetMatchingService(kIOMainPortDefault, matching);
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// if (!service) {
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// return "err: failed to look up registered IOService objects that match a matching dictionary";
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// }
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//
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// CFStringRef serialNumberRef = IORegistryEntryCreateCFProperty(
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// service,
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// CFSTR("IOPlatformSerialNumber"),
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// kCFAllocatorDefault,
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// 0
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// );
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// if (!serialNumberRef) {
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// return "err: failed to look up serial number in IORegistry";
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// }
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//
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// CFIndex length = CFStringGetLength(serialNumberRef);
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// CFIndex max_size = CFStringGetMaximumSizeForEncoding(length, kCFStringEncodingUTF8) + 1;
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// char *serialNumberBuf = (char *)malloc(max_size);
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//
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// bool result = CFStringGetCString(serialNumberRef, serialNumberBuf, max_size, kCFStringEncodingUTF8);
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//
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// CFRelease(serialNumberRef);
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// IOObjectRelease(service);
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//
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// if (!result) {
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// free(serialNumberBuf);
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//
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// return "err: failed to convert serial number reference to string";
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// }
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//
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// return serialNumberBuf;
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// }
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import "C"
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import (
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"fmt"
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"strings"
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"tailscale.com/types/logger"
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)
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// GetSerialNumber returns the platform serial sumber as reported by IOKit.
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func GetSerialNumbers(_ logger.Logf) ([]string, error) {
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csn := C.getSerialNumber()
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serialNumber := C.GoString(csn)
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if err, ok := strings.CutPrefix(serialNumber, "err: "); ok {
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return nil, fmt.Errorf("failed to get serial number from IOKit: %s", err)
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}
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return []string{serialNumber}, nil
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}
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