[ftp] Initial implementation

net/ftp/ftp.go

@@ -0,0 +1,41 @@
+// Package ftp provides ftp access to the ardrone.
+package ftp
+
+import (
+	goftp "github.com/jlaffaye/goftp"
+	"io"
+	"path/filepath"
+)
+
+// 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
+}
+
+// Conn is a ftp connection.
+type Conn struct {
+	conn    *goftp.ServerConn
+	ftpHome string
+}
+
+// Close closes the connection.
+func (c *Conn) Close() error {
+	return c.conn.Quit()
+}
+
+// Upload uploads the data to the relative ftp path. Returns the absolute path
+// of the file on the drone.
+func (c *Conn) Upload(data io.Reader, path string) (string, error) {
+	err := c.conn.Stor(path, data)
+	return filepath.Join(c.ftpHome, path), err
+}
+
+// Del deletes the given relative ftp path.
+func (c *Conn) Del(path string) error {
+	return c.conn.Delete(path)
+}