mirror of
https://github.com/edgelesssys/constellation.git
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102 lines
2.8 KiB
Go
102 lines
2.8 KiB
Go
/*
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Copyright (c) Edgeless Systems GmbH
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SPDX-License-Identifier: AGPL-3.0-only
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*/
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package cmd
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import (
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"encoding/json"
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"fmt"
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"os"
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"github.com/edgelesssys/constellation/v2/internal/attestation/measurements"
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"github.com/edgelesssys/constellation/v2/internal/logger"
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"github.com/spf13/cobra"
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)
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// newMeasurementsEnvelopeCmd creates a new envelope command.
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func newMeasurementsEnvelopeCmd() *cobra.Command {
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cmd := &cobra.Command{
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Use: "envelope",
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Short: "Envelope OS image measurements",
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Long: "Envelope OS image measurements for one variant to follow the measurements v2 format.",
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Args: cobra.ExactArgs(0),
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RunE: runEnvelopeMeasurements,
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}
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cmd.SetOut(os.Stdout)
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cmd.Flags().String("version", "", "Shortname of the os image version.")
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cmd.Flags().String("csp", "", "CSP of this image measurement.")
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cmd.Flags().String("attestation-variant", "", "Attestation variant of the image measurements.")
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cmd.Flags().String("in", "", "Path to read the raw measurements from.")
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cmd.Flags().String("out", "", "Optional path to write the enveloped result to. If not set, the result is written to stdout.")
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cmd.Flags().Bool("verbose", false, "Enable verbose output")
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must(cmd.MarkFlagRequired("version"))
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must(cmd.MarkFlagRequired("csp"))
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must(cmd.MarkFlagRequired("attestation-variant"))
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must(cmd.MarkFlagRequired("in"))
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return cmd
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}
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func runEnvelopeMeasurements(cmd *cobra.Command, _ []string) error {
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workdir := os.Getenv("BUILD_WORKING_DIRECTORY")
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if len(workdir) > 0 {
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must(os.Chdir(workdir))
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}
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flags, err := parseEnvelopeMeasurementsFlags(cmd)
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if err != nil {
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return err
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}
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log := logger.New(logger.PlainLog, flags.logLevel)
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log.Debugf("Parsed flags: %+v", flags)
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f, err := os.Open(flags.in)
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if err != nil {
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return fmt.Errorf("enveloping measurements: opening input file: %w", err)
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}
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defer f.Close()
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var measuremnt rawMeasurements
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if err := json.NewDecoder(f).Decode(&measuremnt); err != nil {
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return fmt.Errorf("enveloping measurements: reading input file: %w", err)
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}
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enveloped := measurements.ImageMeasurementsV2{
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Ref: flags.version.Ref,
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Stream: flags.version.Stream,
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Version: flags.version.Version,
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List: []measurements.ImageMeasurementsV2Entry{
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{
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CSP: flags.csp,
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AttestationVariant: flags.attestationVariant,
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Measurements: measuremnt.Measurements,
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},
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},
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}
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out := cmd.OutOrStdout()
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if len(flags.out) > 0 {
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outF, err := os.Create(flags.out)
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if err != nil {
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return fmt.Errorf("enveloping measurements: opening output file: %w", err)
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}
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defer outF.Close()
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out = outF
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}
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if err := json.NewEncoder(out).Encode(enveloped); err != nil {
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return fmt.Errorf("enveloping measurements: writing output file: %w", err)
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}
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log.Infof("Enveloped image measurements")
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return nil
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}
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type rawMeasurements struct {
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Measurements measurements.M `json:"measurements"`
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}
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