// CharmArchiveSha256 returns the SHA256 digest of the charm archive
// (bundle) data for each charm url in the given parameters.
func (u *UniterAPIV3) CharmArchiveSha256(args params.CharmURLs) (params.StringResults, error) {
result := params.StringResults{
Results: make([]params.StringResult, len(args.URLs)),
}
for i, arg := range args.URLs {
curl, err := charm.ParseURL(arg.URL)
if err != nil {
err = common.ErrPerm
} else {
var sch *state.Charm
sch, err = u.st.Charm(curl)
if errors.IsNotFound(err) {
err = common.ErrPerm
}
if err == nil {
result.Results[i].Result = sch.BundleSha256()
}
}
result.Results[i].Error = common.ServerError(err)
}
return result, nil
}
