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package buildflags
import (
"encoding/csv"
"fmt"
"strconv"
"strings"
controllerapi "github.com/docker/buildx/controller/pb"
"github.com/pkg/errors"
)
func CanonicalizeAttest(attestType string, in string) string {
if in == "" {
return ""
}
if b, err := strconv.ParseBool(in); err == nil {
return fmt.Sprintf("type=%s,disabled=%t", attestType, !b)
}
return fmt.Sprintf("type=%s,%s", attestType, in)
}
func ParseAttests(in []string) ([]*controllerapi.Attest, error) {
out := []*controllerapi.Attest{}
found := map[string]struct{}{}
for _, in := range in {
in := in
attest, err := ParseAttest(in)
if err != nil {
return nil, err
}
if _, ok := found[attest.Type]; ok {
return nil, errors.Errorf("duplicate attestation field %s", attest.Type)
}
found[attest.Type] = struct{}{}
out = append(out, attest)
}
return out, nil
}
func ParseAttest(in string) (*controllerapi.Attest, error) {
if in == "" {
return nil, nil
}
csvReader := csv.NewReader(strings.NewReader(in))
fields, err := csvReader.Read()
if err != nil {
return nil, err
}
attest := controllerapi.Attest{
Attrs: in,
}
for _, field := range fields {
key, value, ok := strings.Cut(field, "=")
if !ok {
return nil, errors.Errorf("invalid value %s", field)
}
key = strings.TrimSpace(strings.ToLower(key))
switch key {
case "type":
attest.Type = value
case "disabled":
disabled, err := strconv.ParseBool(value)
if err != nil {
return nil, errors.Wrapf(err, "invalid value %s", field)
}
attest.Disabled = disabled
}
}
if attest.Type == "" {
return nil, errors.Errorf("attestation type not specified")
}
return &attest, nil
}
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