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keyserver_login.go
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keyserver_login.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/pkg/sylog"
)
// KeyserverLogin logs in to a keyserver.
func KeyserverLogin(usrConfigFile string, args *LoginArgs) (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
}
if err := c.Login(args.Name, args.Username, args.Password, args.Insecure, ""); err != nil {
return fmt.Errorf("while login to %s: %s", args.Name, err)
}
// 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)
}
sylog.Infof("Token stored in %s", file.Name())
return nil
}