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package main
import (
"fmt"
"net/http"
"github.com/pkg/sftp"
"github.com/lxc/incus/v6/internal/server/response"
)
var sftpCmd = APIEndpoint{
Name: "sftp",
Path: "sftp",
Get: APIEndpointAction{Handler: sftpHandler},
}
func sftpHandler(d *Daemon, r *http.Request) response.Response {
return &sftpServe{d, r}
}
type sftpServe struct {
d *Daemon
r *http.Request
}
func (r *sftpServe) String() string {
return "sftp handler"
}
// Code returns the HTTP code.
func (r *sftpServe) Code() int {
return http.StatusOK
}
func (r *sftpServe) Render(w http.ResponseWriter) error {
// Upgrade to sftp.
if r.r.Header.Get("Upgrade") != "sftp" {
http.Error(w, "Missing or invalid upgrade header", http.StatusBadRequest)
return nil
}
hijacker, ok := w.(http.Hijacker)
if !ok {
http.Error(w, "Webserver doesn't support hijacking", http.StatusInternalServerError)
return nil
}
conn, _, err := hijacker.Hijack()
if err != nil {
http.Error(w, fmt.Errorf("Failed to hijack connection: %w", err).Error(), http.StatusInternalServerError)
return nil
}
defer func() { _ = conn.Close() }()
err = response.Upgrade(conn, "sftp")
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return nil
}
// Start sftp server.
server, err := sftp.NewServer(conn, sftp.WithAllocator())
if err != nil {
return nil
}
return server.Serve()
}
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