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65 lines
1.4 KiB
Go
65 lines
1.4 KiB
Go
// Package ssh provides the connection helper for ssh:// URL.
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package ssh
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import (
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"net/url"
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"github.com/pkg/errors"
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)
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// ParseURL parses URL
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func ParseURL(daemonURL string) (*Spec, error) {
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u, err := url.Parse(daemonURL)
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if err != nil {
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return nil, err
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}
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if u.Scheme != "ssh" {
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return nil, errors.Errorf("expected scheme ssh, got %q", u.Scheme)
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}
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var sp Spec
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if u.User != nil {
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sp.User = u.User.Username()
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if _, ok := u.User.Password(); ok {
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return nil, errors.New("plain-text password is not supported")
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}
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}
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sp.Host = u.Hostname()
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if sp.Host == "" {
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return nil, errors.Errorf("no host specified")
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}
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sp.Port = u.Port()
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if u.Path != "" {
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return nil, errors.Errorf("extra path after the host: %q", u.Path)
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}
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if u.RawQuery != "" {
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return nil, errors.Errorf("extra query after the host: %q", u.RawQuery)
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}
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if u.Fragment != "" {
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return nil, errors.Errorf("extra fragment after the host: %q", u.Fragment)
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}
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return &sp, err
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}
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// Spec of SSH URL
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type Spec struct {
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User string
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Host string
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Port string
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}
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// Args returns args except "ssh" itself combined with optional additional command args
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func (sp *Spec) Args(add ...string) []string {
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var args []string
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if sp.User != "" {
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args = append(args, "-l", sp.User)
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}
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if sp.Port != "" {
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args = append(args, "-p", sp.Port)
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}
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args = append(args, "--", sp.Host)
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args = append(args, add...)
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return args
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}
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