diff --git a/sftp.h b/sftp.h
new file mode 100644
index 0000000..4fdc2b6
--- /dev/null
+++ b/sftp.h
@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 2001 Markus Friedl.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * draft-ietf-secsh-filexfer-00.txt
+ */
+
+/* version */
+#define	SSH2_FILEXFER_VERSION		2
+
+/* client to server */
+#define SSH2_FXP_INIT			1
+#define SSH2_FXP_OPEN			3
+#define SSH2_FXP_CLOSE			4
+#define SSH2_FXP_READ			5
+#define SSH2_FXP_WRITE			6
+#define SSH2_FXP_LSTAT			7
+#define SSH2_FXP_FSTAT			8
+#define SSH2_FXP_SETSTAT		9
+#define SSH2_FXP_FSETSTAT		10
+#define SSH2_FXP_OPENDIR		11
+#define SSH2_FXP_READDIR		12
+#define SSH2_FXP_REMOVE			13
+#define SSH2_FXP_MKDIR			14
+#define SSH2_FXP_RMDIR			15
+#define SSH2_FXP_REALPATH		16
+#define SSH2_FXP_STAT			17
+#define SSH2_FXP_RENAME			18
+
+/* server to client */
+#define SSH2_FXP_VERSION		2
+#define SSH2_FXP_STATUS			101
+#define SSH2_FXP_HANDLE			102
+#define SSH2_FXP_DATA			103
+#define SSH2_FXP_NAME			104
+#define SSH2_FXP_ATTRS			105
+
+#define SSH2_FXP_EXTENDED		200
+#define SSH2_FXP_EXTENDED_REPLY		201
+
+/* attributes */
+#define SSH2_FILEXFER_ATTR_SIZE		0x00000001
+#define SSH2_FILEXFER_ATTR_UIDGID	0x00000002
+#define SSH2_FILEXFER_ATTR_PERMISSIONS	0x00000004
+#define SSH2_FILEXFER_ATTR_ACMODTIME	0x00000008
+#define SSH2_FILEXFER_ATTR_EXTENDED	0x80000000
+
+/* portable open modes */
+#define SSH2_FXF_READ			0x00000001
+#define SSH2_FXF_WRITE			0x00000002
+#define SSH2_FXF_APPEND			0x00000004
+#define SSH2_FXF_CREAT			0x00000008
+#define SSH2_FXF_TRUNC			0x00000010
+#define SSH2_FXF_EXCL			0x00000020
+
+/* status messages */
+#define SSH2_FX_OK			0
+#define SSH2_FX_EOF			1
+#define SSH2_FX_NO_SUCH_FILE		2
+#define SSH2_FX_PERMISSION_DENIED	3
+#define SSH2_FX_FAILURE			4
+#define SSH2_FX_BAD_MESSAGE		5
+#define SSH2_FX_NO_CONNECTION		6
+#define SSH2_FX_CONNECTION_LOST		7
+#define SSH2_FX_OP_UNSUPPORTED		8