/
ssh_kernel.go
80 lines (66 loc) · 1.9 KB
/
ssh_kernel.go
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package service
import (
"errors"
"github.com/vertex-center/vertex/core/port"
"github.com/vertex-center/vertex/core/types"
"github.com/vertex-center/vertex/pkg/user"
"golang.org/x/crypto/ssh"
)
var (
ErrInvalidPublicKey = errors.New("invalid key")
ErrUserNotFound = errors.New("user not found")
ErrFailedToAddKey = errors.New("failed to add key")
)
type SshKernelService struct {
sshAdapter port.SshKernelAdapter
}
func NewSshKernelService(sshAdapter port.SshKernelAdapter) port.SshKernelService {
return &SshKernelService{
sshAdapter: sshAdapter,
}
}
// GetAll returns all SSH keys from the authorized keys files.
func (s *SshKernelService) GetAll() ([]types.PublicKey, error) {
users, err := s.sshAdapter.GetUsers()
if err != nil {
return nil, err
}
return s.sshAdapter.GetAll(users)
}
// Add adds an SSH key to the authorized keys file. The key must
// be a valid SSH public key, otherwise ErrInvalidPublicKey is returned.
func (s *SshKernelService) Add(authorizedKey string, username string) error {
u, err := s.GetUser(username)
if err != nil {
return err
}
_, _, _, _, err = ssh.ParseAuthorizedKey([]byte(authorizedKey))
if err != nil {
return ErrInvalidPublicKey
}
return s.sshAdapter.Add(authorizedKey, u)
}
// Delete deletes an SSH key from the authorized keys file.
func (s *SshKernelService) Delete(fingerprint string, username string) error {
u, err := s.GetUser(username)
if err != nil {
return err
}
return s.sshAdapter.Remove(fingerprint, u)
}
// GetUsers returns all users on the system that can have SSH keys.
func (s *SshKernelService) GetUsers() ([]user.User, error) {
return s.sshAdapter.GetUsers()
}
func (s *SshKernelService) GetUser(username string) (user.User, error) {
users, err := s.GetUsers()
if err != nil {
return user.User{}, err
}
for _, u := range users {
if u.Name == username {
return u, nil
}
}
return user.User{}, ErrUserNotFound
}