mirror of
https://github.com/octoleo/restic.git
synced 2024-11-05 12:57:53 +00:00
f9850b79b5
This caused restic to exit with error messages like `Fatal: parsing repository location failed: Fatal: sftp path [...]` `Fatal: create repository at rest:http://localhost:12345/ failed: Fatal: config file already exists`
94 lines
2.5 KiB
Go
94 lines
2.5 KiB
Go
package sftp
|
|
|
|
import (
|
|
"net/url"
|
|
"path"
|
|
"strings"
|
|
|
|
"github.com/restic/restic/internal/errors"
|
|
"github.com/restic/restic/internal/options"
|
|
)
|
|
|
|
// Config collects all information required to connect to an sftp server.
|
|
type Config struct {
|
|
User, Host, Port, Path string
|
|
|
|
Layout string `option:"layout" help:"use this backend directory layout (default: auto-detect)"`
|
|
Command string `option:"command" help:"specify command to create sftp connection"`
|
|
|
|
Connections uint `option:"connections" help:"set a limit for the number of concurrent connections (default: 5)"`
|
|
}
|
|
|
|
// NewConfig returns a new config with default options applied.
|
|
func NewConfig() Config {
|
|
return Config{
|
|
Connections: 5,
|
|
}
|
|
}
|
|
|
|
func init() {
|
|
options.Register("sftp", Config{})
|
|
}
|
|
|
|
// ParseConfig parses the string s and extracts the sftp config. The
|
|
// supported configuration formats are sftp://user@host[:port]/directory
|
|
// and sftp:user@host:directory. The directory will be path Cleaned and can
|
|
// be an absolute path if it starts with a '/' (e.g.
|
|
// sftp://user@host//absolute and sftp:user@host:/absolute).
|
|
func ParseConfig(s string) (interface{}, error) {
|
|
var user, host, port, dir string
|
|
switch {
|
|
case strings.HasPrefix(s, "sftp://"):
|
|
// parse the "sftp://user@host/path" url format
|
|
url, err := url.Parse(s)
|
|
if err != nil {
|
|
return nil, errors.WithStack(err)
|
|
}
|
|
if url.User != nil {
|
|
user = url.User.Username()
|
|
}
|
|
host = url.Hostname()
|
|
port = url.Port()
|
|
dir = url.Path
|
|
if dir == "" {
|
|
return nil, errors.Errorf("invalid backend %q, no directory specified", s)
|
|
}
|
|
|
|
dir = dir[1:]
|
|
case strings.HasPrefix(s, "sftp:"):
|
|
// parse the sftp:user@host:path format, which means we'll get
|
|
// "user@host:path" in s
|
|
s = s[5:]
|
|
// split user@host and path at the colon
|
|
var colon bool
|
|
host, dir, colon = strings.Cut(s, ":")
|
|
if !colon {
|
|
return nil, errors.New("sftp: invalid format, hostname or path not found")
|
|
}
|
|
// split user and host at the "@"
|
|
data := strings.SplitN(host, "@", 3)
|
|
if len(data) == 3 {
|
|
user = data[0] + "@" + data[1]
|
|
host = data[2]
|
|
} else if len(data) == 2 {
|
|
user = data[0]
|
|
host = data[1]
|
|
}
|
|
default:
|
|
return nil, errors.New(`invalid format, does not start with "sftp:"`)
|
|
}
|
|
|
|
p := path.Clean(dir)
|
|
if strings.HasPrefix(p, "~") {
|
|
return nil, errors.New("sftp path starts with the tilde (~) character, that fails for most sftp servers.\nUse a relative directory, most servers interpret this as relative to the user's home directory")
|
|
}
|
|
|
|
cfg := NewConfig()
|
|
cfg.User = user
|
|
cfg.Host = host
|
|
cfg.Port = port
|
|
cfg.Path = p
|
|
|
|
return cfg, nil
|
|
}
|