NB: big update - may break stuff. Please test!

 - (djm) OpenBSD CVS sync:
   - markus@cvs.openbsd.org  2001/02/03 03:08:38
     [auth-options.c auth-rh-rsa.c auth-rhosts.c auth.c canohost.c]
     [canohost.h servconf.c servconf.h session.c sshconnect1.c sshd.8]
     [sshd_config]
     make ReverseMappingCheck optional in sshd_config; ok djm@,dugsong@
   - markus@cvs.openbsd.org  2001/02/03 03:19:51
     [ssh.1 sshd.8 sshd_config]
     Skey is now called ChallengeResponse
   - markus@cvs.openbsd.org  2001/02/03 03:43:09
     [sshd.8]
     use no-pty option in .ssh/authorized_keys* if you need a 8-bit clean
     channel. note from Erik.Anggard@cygate.se (pr/1659)
   - stevesk@cvs.openbsd.org 2001/02/03 10:03:06
     [ssh.1]
     typos; ok markus@
   - djm@cvs.openbsd.org     2001/02/04 04:11:56
     [scp.1 sftp-server.c ssh.1 sshd.8 sftp-client.c sftp-client.h]
     [sftp-common.c sftp-common.h sftp-int.c sftp-int.h sftp.1 sftp.c]
     Basic interactive sftp client; ok theo@
 - (djm) Update RPM specs for new sftp binary
 - (djm) Update several bits for new optional reverse lookup stuff. I
   think I got them all.
diff --git a/sftp-client.h b/sftp-client.h
new file mode 100644
index 0000000..838b46b
--- /dev/null
+++ b/sftp-client.h
@@ -0,0 +1,84 @@
+/* $OpenBSD: sftp-client.h,v 1.1 2001/02/04 11:11:54 djm Exp $ */
+
+/*
+ * Copyright (c) 2001 Damien Miller.  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.
+ */
+
+/* Client side of SSH2 filexfer protocol */
+
+/* Initialiase a SSH filexfer connection */
+int do_init(int fd_in, int fd_out);
+
+/* Close file referred to by 'handle' */
+int do_close(int fd_in, int fd_out, char *handle, u_int handle_len);
+
+/* List contents of directory 'path' to stdout */
+int do_ls(int fd_in, int fd_out, char *path);
+
+/* Delete file 'path' */
+int do_rm(int fd_in, int fd_out, char *path);
+
+/* Create directory 'path' */
+int do_mkdir(int fd_in, int fd_out, char *path, Attrib *a);
+
+/* Remove directory 'path' */
+int do_rmdir(int fd_in, int fd_out, char *path);
+
+/* Get file attributes of 'path' (follows symlinks) */
+Attrib *do_stat(int fd_in, int fd_out, char *path);
+
+/* Get file attributes of 'path' (does not follow symlinks) */
+Attrib *do_lstat(int fd_in, int fd_out, char *path);
+
+/* Get file attributes of open file 'handle' */
+Attrib *do_fstat(int fd_in, int fd_out, char *handle,
+    u_int handle_len);
+
+/* Set file attributes of 'path' */
+int do_setstat(int fd_in, int fd_out, char *path, Attrib *a);
+
+/* Set file attributes of open file 'handle' */
+int do_fsetstat(int fd_in, int fd_out, char *handle,
+    u_int handle_len, Attrib *a);
+
+/* Canonicalise 'path' - caller must free result */
+char *do_realpath(int fd_in, int fd_out, char *path);
+
+/* Rename 'oldpath' to 'newpath' */
+int do_rename(int fd_in, int fd_out, char *oldpath, char *newpath);
+
+/* XXX: add callbacks to do_download/do_upload so we can do progress meter */
+
+/*
+ * Download 'remote_path' to 'local_path'. Preserve permissions and times
+ * if 'pflag' is set
+ */
+int do_download(int fd_in, int fd_out, char *remote_path, char *local_path,
+    int pflag);
+
+/*
+ * Upload 'local_path' to 'remote_path'. Preserve permissions and times
+ * if 'pflag' is set
+ */
+int do_upload(int fd_in, int fd_out, char *local_path, char *remote_path,
+    int pflag);