/
registry_logout.go
63 lines (51 loc) · 1.87 KB
/
registry_logout.go
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// Copyright (c) Contributors to the Apptainer project, established as
// Apptainer a Series of LF Projects LLC.
// For website terms of use, trademark policy, privacy policy and other
// project policies see https://lfprojects.org/policies
// Copyright (c) 2019-2023, Sylabs Inc. All rights reserved.
// Copyright (c) 2020, Control Command Inc. All rights reserved.
// This software is licensed under a 3-clause BSD license. Please consult the
// LICENSE.md file distributed with the sources of this project regarding your
// rights to use or distribute this software.
package apptainer
import (
"fmt"
"io"
"os"
"github.com/apptainer/apptainer/internal/pkg/remote"
)
// RegistryLogout logs out from an OCI/Docker registry.
func RegistryLogout(usrConfigFile, name string) (err error) {
// opening config file
file, err := os.OpenFile(usrConfigFile, os.O_RDWR|os.O_CREATE, 0o600)
if err != nil {
return fmt.Errorf("while opening configuration file: %s", err)
}
defer file.Close()
// read file contents to config struct
c, err := remote.ReadFrom(file)
if err != nil {
return fmt.Errorf("while parsing configuration data: %s", err)
}
if err := syncSysConfig(c); err != nil {
return err
}
// services
if err := c.Logout(name); err != nil {
return fmt.Errorf("while verifying token: %v", err)
}
// truncating file before writing new contents and syncing to commit file
if err := file.Truncate(0); err != nil {
return fmt.Errorf("while truncating configuration file: %s", err)
}
if n, err := file.Seek(0, io.SeekStart); err != nil || n != 0 {
return fmt.Errorf("failed to reset %s cursor: %s", file.Name(), err)
}
if _, err := c.WriteTo(file); err != nil {
return fmt.Errorf("while writing configuration to file: %s", err)
}
if err := file.Sync(); err != nil {
return fmt.Errorf("failed to flush configuration file %s: %s", file.Name(), err)
}
return nil
}