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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,76 @@ | ||
| /* | ||
| Copyright (c) Edgeless Systems GmbH | ||
| SPDX-License-Identifier: AGPL-3.0-only | ||
| */ | ||
|
|
||
| package main | ||
|
|
||
| import ( | ||
| "bufio" | ||
| "fmt" | ||
| "io" | ||
| "strconv" | ||
| "strings" | ||
|
|
||
| "github.com/edgelesssys/constellation/v2/internal/api/attestationconfigapi" | ||
| ) | ||
|
|
||
| // ParseSNPReport parses the SNP report and returns the version information. | ||
| func ParseSNPReport(reader io.Reader) (attestationconfigapi.AzureSEVSNPVersion, error) { | ||
| mp := parseLaunchTCBSection(reader) | ||
| return parseVersion(mp) | ||
| } | ||
|
|
||
| func parseLaunchTCBSection(reader io.Reader) map[string]string { | ||
| scanner := bufio.NewScanner(reader) | ||
| parsedValues := make(map[string]string) | ||
| inLaunchTCBSection := false | ||
|
|
||
| for scanner.Scan() { | ||
| line := scanner.Text() | ||
|
|
||
| if strings.Contains(line, "Launch TCB:") { | ||
| inLaunchTCBSection = true | ||
| continue // skip the current line as it is the section header | ||
| } | ||
|
|
||
| // Stop scanning if we have reached the end of the Launch TCB section | ||
| if inLaunchTCBSection && strings.Contains(line, "Signature (DER)") { | ||
| break | ||
| } | ||
|
|
||
| if inLaunchTCBSection { | ||
| parts := strings.SplitN(line, ":", 2) | ||
| if len(parts) == 2 { | ||
| key := strings.TrimSpace(parts[0]) | ||
| value := strings.TrimSpace(parts[1]) | ||
| parsedValues[key] = value | ||
| } | ||
| } | ||
| } | ||
|
|
||
| return parsedValues | ||
| } | ||
|
|
||
| func parseVersion(versionMap map[string]string) (res attestationconfigapi.AzureSEVSNPVersion, err error) { | ||
| version := attestationconfigapi.AzureSEVSNPVersion{} | ||
| for key, value := range versionMap { | ||
| val, err := strconv.ParseUint(value, 10, 8) | ||
| if err != nil { | ||
| return res, fmt.Errorf("could not parse value for key %s: %w", key, err) | ||
| } | ||
|
|
||
| switch key { | ||
| case "Secure Processor bootloader SVN": | ||
| version.Bootloader = uint8(val) | ||
| case "Secure Processor operating system SVN": | ||
| version.TEE = uint8(val) | ||
| case "SEV-SNP firmware SVN": | ||
| version.SNP = uint8(val) | ||
| case "Microcode SVN": | ||
| version.Microcode = uint8(val) | ||
| } | ||
| } | ||
| return version, nil | ||
| } |
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