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parsesnp: add slog #21

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merged 1 commit into from
Dec 20, 2023
Merged

parsesnp: add slog #21

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24 changes: 19 additions & 5 deletions tools/parsesnp.go
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Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,7 @@ import (
"encoding/hex"
"fmt"
"io"
"log"
"log/slog"
"os"

"github.com/google/go-sev-guest/abi"
Expand Down Expand Up @@ -45,13 +45,26 @@ type Report struct {
}

func main() {
if err := run(); err != nil {
os.Exit(1)
}
}

func run() (retErr error) {
logger := slog.Default()
defer func() {
if retErr != nil {
logger.Error(retErr.Error())
}
}()

data, err := io.ReadAll(os.Stdin)
if err != nil {
log.Fatalf("failed to read input: %v", err)
return fmt.Errorf("failed to read input: %w", err)
}
data, err = hex.DecodeString(string(data))
if err != nil {
log.Fatalf("failed to decode input: %v", err)
return fmt.Errorf("failed to decode input: %w", err)
}

var r Report
Expand Down Expand Up @@ -79,11 +92,11 @@ func main() {

signerInfo, err := abi.ParseSignerInfo(binary.LittleEndian.Uint32(data[0x48:0x4C]))
if err != nil {
log.Printf("failed to parse signer info: %v", err)
fmt.Printf("failed to parse signer info: %v", err)
}
r.SignerInfo = abi.ComposeSignerInfo(signerInfo)
if err := mbz(data, 0x4C, 0x50); err != nil {
log.Printf("%v", err)
fmt.Printf("%v", err)
}
fmt.Printf("SignerInfo: %v\n", r.SignerInfo)
r.ReportData = clone(data[0x50:0x90])
Expand Down Expand Up @@ -139,6 +152,7 @@ func main() {
}
r.Signature = clone(data[signatureOffset:abi.ReportSize])
fmt.Printf("Signature: %x\n", r.Signature)
return nil
}

func clone(b []byte) []byte {
Expand Down