MFH (r314306,r314720): Upgrade OpenSSH to 7.4p1.

MFC r305065: Add refactored blacklist support to sshd

Change the calls to of blacklist_init() and blacklist_notify to be
macros defined in the blacklist_client.h file. This avoids
the need for #ifdef USE_BLACKLIST / #endif except in the
blacklist.c file.

Remove redundent initialization attempts from within
blacklist_notify - everything always goes through
blacklistd_init().

Added UseBlacklist option to sshd, which defaults to off.
To enable the functionality, use '-o UseBlacklist=yes' on
the command line, or uncomment in the sshd_config file.

Approved by: des
Sponsored by: The FreeBSD Foundation

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Upgrade to OpenSSH 7.0p1.

Upgrade to OpenSSH 6.9p1.

begone, foul autoprops!

Upgrade to OpenSSH 6.8p1.

Upgrade to OpenSSH 6.7p1, retaining libwrap support (which has been removed
upstream) and a number of security fixes which we had already backported.

MFC after: 1 week

As previously threatened, remove the HPN patch from OpenSSH.

Retire the NONE cipher option.

Upgrade to OpenSSH 6.6p1.

Upgrade to OpenSSH 6.5p1.

Upgrade to 6.3p1.

Approved by: re (gjb)

Upgrade to OpenSSH 6.2p1. The most important new features are support
for a key revocation list and more fine-grained authentication control.

Upgrade OpenSSH to 6.1p1.

Upgrade to OpenSSH 5.9p1.

MFC after: 3 months

Fix two more $FreeBSD$ keywords.

Reported by: pluknet
Approved by: re (implicit)

Add support for dynamically adjusted buffers to allow the full use of
the bandwidth of long fat pipes (i.e. 100Mbps+ trans-oceanic or
trans-continental links). Bandwidth-delay products up to 64MB are
supported.

Also add support (not compiled by default) for the None cypher. The
None cypher can only be enabled on non-interactive sessions (those
without a pty where -T was not used) and must be enabled in both
the client and server configuration files and on the client command
line. Additionally, the None cypher will only be activated after
authentication is complete. To enable the None cypher you must add
-DNONE_CIPHER_ENABLED to CFLAGS via the make command line or in
/etc/make.conf.

This code is a style(9) compliant version of these features extracted
from the patches published at:

http://www.psc.edu/networking/projects/hpn-ssh/

Merging this patch has been a collaboration between me and Bjoern.

Reviewed by: bz
Approved by: re (kib), des (maintainer)

Upgrade to OpenSSH 5.8p2.

Upgrade to OpenSSH 5.6p1.

Upgrade to OpenSSH 5.4p1.

MFC after: 1 month

Upgrade to OpenSSH 5.2p1.

MFC after: 3 months

Upgrade to OpenSSH 5.1p1.

I have worked hard to reduce diffs against the vendor branch. One
notable change in that respect is that we no longer prefer DSA over
RSA - the reasons for doing so went away years ago. This may cause
some surprises, as ssh will warn about unknown host keys even for
hosts whose keys haven't changed.

MFC after: 6 weeks

Remove svn:keywords except on files that need it. This makes diffs
against the vendor branch much more readable.

More files which no longer have any local changes.

Consistently set svn:eol-style.

Merge conflicts.

MFC after: 1 week

Merge conflicts.

Resolve conflicts.

Resolve conflicts.

Resolve conflicts

Resolve conflicts.

Resolve conflicts and remove obsolete files.

Sponsored by: registrar.no

Resolve conflicts.

Forcibly revert to mainline.

Resolve conflicts. Known issues:

- sshd fails to set TERM correctly.
- privilege separation may break PAM and is currently turned off.
- man pages have not yet been updated

I will have these issues resolved, and privilege separation turned on by
default, in time for DP2.

Sponsored by: DARPA, NAI Labs

Fix conflicts.

Fix conflicts for OpenSSH 2.9.

Add code for being compatible with ssh.com's krb5 authentication.
It is done by using the same ssh messages for v4 and v5 authentication
(since the ssh.com does not now anything about v4) and looking at the
contents after unpacking it to see if it is v4 or v5.
Based on code from Björn Grönvall <bg@sics.se>

PR: misc/20504

Update to OpenSSH 2.3.0 with FreeBSD modifications. OpenSSH 2.3.0
new features description elided in favor of checking out their
website.

Important new FreeBSD-version stuff: PAM support has been worked
in, partially from the "Unix" OpenSSH version, and a lot due to the
work of Eivind Eklend, too.

This requires at least the following in pam.conf:

sshd auth sufficient pam_skey.so
sshd auth required pam_unix.so try_first_pass
sshd session required pam_permit.so

Parts by: Eivind Eklend <eivind@FreeBSD.org>

Resolve conflicts and update for OpenSSH 2.2.0

Reviewed by: gshapiro, peter, green

Forced commit. This is to try and help folks that used the international
crypto repo and have slightly different files but with the same version.
cvsup in 'checkout mode' has no trouble with this, but cvs can get really
silly about it.

Resolve conflicts and update for FreeBSD.

1) Add kerberos5 functionality.
by Daniel Kouril <kouril@informatics.muni.cz>
2) Add full LOGIN_CAP capability
by Andrey Chernov

Add the patches fom ports (QV: ports/security/openssh/patches/patch-*)

This commit was generated by cvs2svn to compensate for changes in r57429,
which included commits to RCS files with non-trunk default branches.

Vendor import of OpenSSH.