upstream commit

Add URI support to ssh, sftp and scp.  For example
ssh://user@host or sftp://user@host/path.  The connection parameters
described in draft-ietf-secsh-scp-sftp-ssh-uri-04 are not implemented since
the ssh fingerprint format in the draft uses md5 with no way to specify the
hash function type.  OK djm@

Upstream-ID: 4ba3768b662d6722de59e6ecb00abf2d4bf9cacc
diff --git a/scp.1 b/scp.1
index 76ce333..92b63f6 100644
--- a/scp.1
+++ b/scp.1
@@ -8,9 +8,9 @@
 .\"
 .\" Created: Sun May  7 00:14:37 1995 ylo
 .\"
-.\" $OpenBSD: scp.1,v 1.74 2017/05/03 21:49:18 naddy Exp $
+.\" $OpenBSD: scp.1,v 1.75 2017/10/21 23:06:24 millert Exp $
 .\"
-.Dd $Mdocdate: May 3 2017 $
+.Dd $Mdocdate: October 21 2017 $
 .Dt SCP 1
 .Os
 .Sh NAME
@@ -27,20 +27,8 @@
 .Op Fl o Ar ssh_option
 .Op Fl P Ar port
 .Op Fl S Ar program
-.Sm off
-.Oo
-.Op Ar user No @
-.Ar host1 :
-.Oc Ar file1
-.Sm on
-.Ar ...
-.Sm off
-.Oo
-.Op Ar user No @
-.Ar host2 :
-.Oc Ar file2
-.Sm on
-.Ek
+.Ar source ...
+.Ar target
 .Sh DESCRIPTION
 .Nm
 copies files between hosts on a network.
@@ -53,15 +41,30 @@
 will ask for passwords or passphrases if they are needed for
 authentication.
 .Pp
-File names may contain a user and host specification to indicate
-that the file is to be copied to/from that host.
+The
+.Ar target
+and
+.Ar destination
+may be specified as a local pathname, a remote host with optional path
+in the form
+.Oo Ar user Ns @ Oc Ns Ar host Ns : Ns Oo Ar path Oc ,
+or an scp URI in the form
+.No scp:// Ns Oo Ar user Ns @ Oc Ns Ar host Ns
+.Oo : Ns Ar port Oc Ns Oo / Ns Ar path Oc .
 Local file names can be made explicit using absolute or relative pathnames
 to avoid
 .Nm
 treating file names containing
 .Sq :\&
 as host specifiers.
-Copies between two remote hosts are also permitted.
+.Pp
+When copying between two remote hosts, if the URI format is used, a
+.Ar port
+may only be specified on the
+.Ar target
+if the
+.Fl 3
+option is used.
 .Pp
 The options are as follows:
 .Bl -tag -width Ds