// Dial connects to the ardrone ftp server at addr. The ftpHome must be set
// to the ftp home directory.
func Dial(addr string, ftpHome string) (*Conn, error) {
ftpConn, err := goftp.Connect(addr)
if err != nil {
return nil, err
}
return &Conn{conn: ftpConn, ftpHome: ftpHome}, nil
}
func (n *ftpFetcher) Fetch(resource string) error {
n.data = GetCachedFile(resource)
if n.data != nil {
return nil
}
furl, err := url.Parse(resource)
if err != nil {
return err
}
if !strings.Contains(furl.Host, ":") {
furl.Host = furl.Host + ":21"
}
ftp, err := goftp.Connect(furl.Host)
if err != nil {
return err
}
defer ftp.Quit()
fusername := "******"
fpassword := "******"
if furl.User != nil {
passwd, haspass := furl.User.Password()
if haspass {
fpassword = passwd
}
fusername = furl.User.Username()
}
err = ftp.Login(fusername, fpassword)
if err != nil {
return err
}
defer ftp.Logout()
resp, err := ftp.Retr(furl.Path)
if err != nil {
return err
}
n.data, err = ioutil.ReadAll(resp)
resp.Close()
PutCachedFile(resource, n.data)
return err
}