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remote_logout.go
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remote_logout.go
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// 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 singularity
import (
"fmt"
"io"
"os"
"github.com/sylabs/singularity/v4/internal/pkg/remote"
"github.com/sylabs/singularity/v4/internal/pkg/remote/endpoint"
)
// RemoteLogout logs out from an endpoint.
func RemoteLogout(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 remote config 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 remote config data: %s", err)
}
if err := syncSysConfig(c); err != nil {
return err
}
var r *endpoint.Config
if name == "" {
r, err = c.GetDefault()
} else {
r, err = c.GetRemote(name)
if err != nil {
return err
}
}
// Remove the token in question
r.Token = ""
// truncating file before writing new contents and syncing to commit file
if err := file.Truncate(0); err != nil {
return fmt.Errorf("while truncating remote config 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 remote config to file: %s", err)
}
if err := file.Sync(); err != nil {
return fmt.Errorf("failed to flush remote config file %s: %s", file.Name(), err)
}
return nil
}
// RemoteLogout logs out from a keyserver or OCI/Docker registry.
func OtherLogout(usrConfigFile, name string, reqAuthFile 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, reqAuthFile); 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
}