// checkLicenseAgreement returns nil if it's ok to proceed with installing the
// package, as deduced from the license agreement (which might involve asking
// the user), or an error that explains the reason why installation should not
// proceed.
func (m *packageYaml) checkLicenseAgreement(ag agreer, d snap.File, currentActiveDir string) error {
if !m.ExplicitLicenseAgreement {
return nil
}
if ag == nil {
return ErrLicenseNotAccepted
}
license, err := d.MetaMember("license.txt")
if err != nil || len(license) == 0 {
return ErrLicenseNotProvided
}
oldM, err := parsePackageYamlFile(filepath.Join(currentActiveDir, "meta", "package.yaml"))
if err != nil && !os.IsNotExist(err) {
return err
}
// don't ask for the license if
// * the previous version also asked for license confirmation, and
// * the license version is the same
if err == nil && oldM.ExplicitLicenseAgreement && oldM.LicenseVersion == m.LicenseVersion {
return nil
}
msg := fmt.Sprintf("%s requires that you accept the following license before continuing", m.Name)
if !ag.Agreed(msg, string(license)) {
return ErrLicenseNotAccepted
}
return nil
}
// checkLicenseAgreement returns nil if it's ok to proceed with installing the
// package, as deduced from the license agreement (which might involve asking
// the user), or an error that explains the reason why installation should not
// proceed.
func checkLicenseAgreement(s *snap.Info, snapf snap.File, cur *snap.Info, ag agreer) error {
if s.LicenseAgreement != "explicit" {
return nil
}
if ag == nil {
return ErrLicenseNotAccepted
}
license, err := snapf.MetaMember("license.txt")
if err != nil || len(license) == 0 {
return ErrLicenseNotProvided
}
// don't ask for the license if
// * the previous version also asked for license confirmation, and
// * the license version is the same
if cur != nil && (cur.LicenseAgreement == "explicit") && cur.LicenseVersion == s.LicenseVersion {
return nil
}
msg := fmt.Sprintf("%s requires that you accept the following license before continuing", s.Name())
if !ag.Agreed(msg, string(license)) {
return ErrLicenseNotAccepted
}
return nil
}