cab.go

/*
 * Copyright (C) 2025 Opsmate, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 * Except as contained in this notice, the name(s) of the above copyright
 * holders shall not be used in advertising or otherwise to promote the
 * sale, use or other dealings in this Software without prior written
 * authorization
 */

package authrootstl

import (
	"fmt"
	"io"

	"github.com/google/go-cabfile/cabfile"
)

func ParseAuthrootstlCab(cabReader io.ReadSeeker) (*CTL, error) {
	cab, err := cabfile.New(cabReader)
	if err != nil {
		return nil, fmt.Errorf("error opening CAB file: %w", err)
	}
	file, err := cab.Content("authroot.stl")
	if err != nil {
		return nil, fmt.Errorf("error getting authroot.stl from CAB file: %w", err)
	}
	der, err := io.ReadAll(file)
	if err != nil {
		return nil, fmt.Errorf("error reading authroot.stl from CAB file: %w", err)
	}
	return ParseAuthrootstl(der)
}