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package ssh
import (
"bytes"
"encoding/json"
"fmt"
"io"
"os/exec"
"regexp"
"strings"
"github.com/containers/common/pkg/config"
)
func nativeConnectionCreate(options ConnectionCreateOptions) error {
var match bool
var err error
if match, err = regexp.MatchString("^[A-Za-z][A-Za-z0-9+.-]*://", options.Path); err != nil {
return fmt.Errorf("invalid destination: %w", err)
}
if !match {
options.Path = "ssh://" + options.Path
}
if len(options.Socket) > 0 {
options.Path += options.Socket
}
dst, uri, err := Validate(options.User, options.Path, options.Port, options.Identity)
if err != nil {
return err
}
// test connection
ssh, err := exec.LookPath("ssh")
if err != nil {
return err
}
if strings.Contains(uri.Host, "/run") {
uri.Host = strings.Split(uri.Host, "/run")[0]
}
conf, err := config.Default()
if err != nil {
return err
}
args := []string{uri.User.String() + "@" + uri.Hostname()}
if len(dst.Identity) > 0 {
args = append(args, "-i", dst.Identity)
}
if len(conf.Engine.SSHConfig) > 0 {
args = append(args, "-F", conf.Engine.SSHConfig)
}
output := &bytes.Buffer{}
args = append(args, "podman", "info", "--format", "json")
info := exec.Command(ssh, args...)
info.Stdout = output
err = info.Run()
if err != nil {
return err
}
remoteInfo := &Info{}
if err := json.Unmarshal(output.Bytes(), &remoteInfo); err != nil {
return fmt.Errorf("failed to parse 'podman info' results: %w", err)
}
if remoteInfo.Host.RemoteSocket == nil || len(remoteInfo.Host.RemoteSocket.Path) == 0 {
return fmt.Errorf("remote podman %q failed to report its UDS socket", uri.Host)
}
// TODO this really should not live here, it must be in podman where we write the other connections as well.
// This duplicates the code for no reason and I have a really hard time to make any sense of why this code
// was added in the first place.
return config.EditConnectionConfig(func(cfg *config.ConnectionsFile) error {
if cfg.Connection.Connections == nil {
cfg.Connection.Connections = map[string]config.Destination{
options.Name: *dst,
}
cfg.Connection.Default = options.Name
} else {
cfg.Connection.Connections[options.Name] = *dst
}
// Create or update an existing farm with the connection being added
if options.Farm != "" {
if len(cfg.Farm.List) == 0 {
cfg.Farm.Default = options.Farm
}
if val, ok := cfg.Farm.List[options.Farm]; ok {
cfg.Farm.List[options.Farm] = append(val, options.Name)
} else {
cfg.Farm.List[options.Farm] = []string{options.Name}
}
}
return nil
})
}
func nativeConnectionExec(options ConnectionExecOptions, input io.Reader) (*ConnectionExecReport, error) {
dst, uri, err := Validate(options.User, options.Host, options.Port, options.Identity)
if err != nil {
return nil, err
}
ssh, err := exec.LookPath("ssh")
if err != nil {
return nil, err
}
output := &bytes.Buffer{}
errors := &bytes.Buffer{}
if strings.Contains(uri.Host, "/run") {
uri.Host = strings.Split(uri.Host, "/run")[0]
}
options.Args = append([]string{uri.User.String() + "@" + uri.Hostname()}, options.Args...)
conf, err := config.Default()
if err != nil {
return nil, err
}
args := []string{}
if len(dst.Identity) > 0 {
args = append(args, "-i", dst.Identity)
}
if len(conf.Engine.SSHConfig) > 0 {
args = append(args, "-F", conf.Engine.SSHConfig)
}
args = append(args, options.Args...)
info := exec.Command(ssh, args...)
info.Stdout = output
info.Stderr = errors
if input != nil {
info.Stdin = input
}
err = info.Run()
if err != nil {
return nil, err
}
return &ConnectionExecReport{Response: output.String()}, nil
}
func nativeConnectionScp(options ConnectionScpOptions) (*ConnectionScpReport, error) {
host, remotePath, localPath, swap, err := ParseScpArgs(options)
if err != nil {
return nil, err
}
dst, uri, err := Validate(options.User, host, options.Port, options.Identity)
if err != nil {
return nil, err
}
scp, err := exec.LookPath("scp")
if err != nil {
return nil, err
}
conf, err := config.Default()
if err != nil {
return nil, err
}
args := []string{}
if len(dst.Identity) > 0 {
args = append(args, "-i", dst.Identity)
}
if len(conf.Engine.SSHConfig) > 0 {
args = append(args, "-F", conf.Engine.SSHConfig)
}
userString := ""
if !strings.Contains(host, "@") {
userString = uri.User.String() + "@"
}
// meaning, we are copying from a remote host
if swap {
args = append(args, userString+host+":"+remotePath, localPath)
} else {
args = append(args, localPath, userString+host+":"+remotePath)
}
info := exec.Command(scp, args...)
err = info.Run()
if err != nil {
return nil, err
}
return &ConnectionScpReport{Response: remotePath}, nil
}
|
