[openssh.git] / ChangeLog

20091208
 - (dtucker) OpenBSD CVS Sync
   - andreas@cvs.openbsd.org 2009/10/24 11:11:58
     [roaming.h]
     Declarations needed for upcoming changes.
     ok markus@
   - andreas@cvs.openbsd.org 2009/10/24 11:13:54
     [sshconnect2.c kex.h kex.c]
     Let the client detect if the server supports roaming by looking
     for the resume@appgate.com kex algorithm.
     ok markus@
   - andreas@cvs.openbsd.org 2009/10/24 11:15:29
     [clientloop.c]
     client_loop() must detect if the session has been suspended and resumed,
     and take appropriate action in that case.
     From Martin Forssen, maf at appgate dot com
   - andreas@cvs.openbsd.org 2009/10/24 11:19:17
     [ssh2.h]
     Define the KEX messages used when resuming a suspended connection.
     ok markus@
   - andreas@cvs.openbsd.org 2009/10/24 11:22:37
     [roaming_common.c]
     Do the actual suspend/resume in the client. This won't be useful until
     the server side supports roaming.
     Most code from Martin Forssen, maf at appgate dot com. Some changes by
     me and markus@
     ok markus@
   - andreas@cvs.openbsd.org 2009/10/24 11:23:42
     [ssh.c]
     Request roaming to be enabled if UseRoaming is true and the server
     supports it.
     ok markus@
   - reyk@cvs.openbsd.org 2009/10/28 16:38:18
     [ssh_config.5 sshd.c misc.h ssh-keyscan.1 readconf.h sshconnect.c
     channels.c channels.h servconf.h servconf.c ssh.1 ssh-keyscan.c scp.1
     sftp.1 sshd_config.5 readconf.c ssh.c misc.c]
     Allow to set the rdomain in ssh/sftp/scp/sshd and ssh-keyscan.
     ok markus@
   - jmc@cvs.openbsd.org 2009/10/28 21:45:08
     [sshd_config.5 sftp.1]
     tweak previous;
   - djm@cvs.openbsd.org 2009/11/10 02:56:22
     [ssh_config.5]
     explain the constraints on LocalCommand some more so people don't
     try to abuse it.
   - djm@cvs.openbsd.org 2009/11/10 02:58:56
     [sshd_config.5]
     clarify that StrictModes does not apply to ChrootDirectory. Permissions
     and ownership are always checked when chrooting. bz#1532
   - dtucker@cvs.openbsd.org 2009/11/10 04:30:45
     [sshconnect2.c channels.c sshconnect.c]
     Set close-on-exec on various descriptors so they don't get leaked to
     child processes.  bz #1643, patch from jchadima at redhat, ok deraadt.
   - markus@cvs.openbsd.org 2009/11/11 21:37:03
     [channels.c channels.h]
     fix race condition in x11/agent channel allocation: don't read after
     the end of the select read/write fdset and make sure a reused FD
     is not touched before the pre-handlers are called.
     with and ok djm@
   - djm@cvs.openbsd.org 2009/11/17 05:31:44
     [clientloop.c]
     fix incorrect exit status when multiplexing and channel ID 0 is recycled
     bz#1570 reported by peter.oliver AT eon-is.co.uk; ok dtucker
   - djm@cvs.openbsd.org 2009/11/19 23:39:50
     [session.c]
     bz#1606: error when an attempt is made to connect to a server
     with ForceCommand=internal-sftp with a shell session (i.e. not a
     subsystem session). Avoids stuck client when attempting to ssh to such a
     service. ok dtucker@
   - dtucker@cvs.openbsd.org 2009/11/20 00:15:41
     [session.c]
     Warn but do not fail if stat()ing the subsystem binary fails.  This helps
     with chrootdirectory+forcecommand=sftp-server and restricted shells.
     bz #1599, ok djm.
   - djm@cvs.openbsd.org 2009/11/20 00:54:01
     [sftp.c]
     bz#1588 change "Connecting to host..." message to "Connected to host."
     and delay it until after the sftp protocol connection has been established.
     Avoids confusing sequence of messages when the underlying ssh connection
     experiences problems. ok dtucker@
   - dtucker@cvs.openbsd.org 2009/11/20 00:59:36
     [sshconnect2.c]
     Use the HostKeyAlias when prompting for passwords.  bz#1039, ok djm@
   - djm@cvs.openbsd.org 2009/11/20 03:24:07
     [misc.c]
     correct off-by-one in percent_expand(): we would fatal() when trying
     to expand EXPAND_MAX_KEYS, allowing only EXPAND_MAX_KEYS-1 to actually
     work.  Note that nothing in OpenSSH actually uses close to this limit at
     present.  bz#1607 from Jan.Pechanec AT Sun.COM
   - halex@cvs.openbsd.org 2009/11/22 13:18:00
     [sftp.c]
     make passing of zero-length arguments to ssh safe by
     passing "-<switch>" "<value>" rather than "-<switch><value>"
     ok dtucker@, guenther@, djm@
   - dtucker@cvs.openbsd.org 2009/12/06 23:41:15
     [sshconnect2.c]
     zap unused variable and strlen; from Steve McClellan, ok djm
   - djm@cvs.openbsd.org 2009/12/06 23:53:45
     [roaming_common.c]
     use socklen_t for getsockopt optlen parameter; reported by
     Steve.McClellan AT radisys.com, ok dtucker@
   - dtucker@cvs.openbsd.org 2009/12/06 23:53:54
     [sftp.c]
     fix potential divide-by-zero in sftp's "df" output when talking to a server
     that reports zero files on the filesystem (Unix filesystems always have at
     least the root inode).  From Steve McClellan at radisys, ok djm@
   - markus@cvs.openbsd.org 2009/12/11 18:16:33
     [key.c]
     switch from 35 to the more common value of RSA_F4 == (2**16)+1 == 65537
     for the RSA public exponent; discussed with provos; ok djm@
   - guenther@cvs.openbsd.org 2009/12/20 07:28:36
     [ssh.c sftp.c scp.c]
     When passing user-controlled options with arguments to other programs,
     pass the option and option argument as separate argv entries and
     not smashed into one (e.g., as -l foo and not -lfoo).  Also, always
     pass a "--" argument to stop option parsing, so that a positional
     argument that starts with a '-' isn't treated as an option.  This
     fixes some error cases as well as the handling of hostnames and
     filenames that start with a '-'.
     Based on a diff by halex@
     ok halex@ djm@ deraadt@
   - djm@cvs.openbsd.org 2009/12/20 23:20:40
     [PROTOCOL]
     fix an incorrect magic number and typo in PROTOCOL; bz#1688
     report and fix from ueno AT unixuser.org

20091226
 - (tim) [contrib/cygwin/Makefile] Install ssh-copy-id and ssh-copy-id.1
   Gzip all man pages. Patch from Corinna Vinschen.

20091221
 - (dtucker) [auth-krb5.c platform.{c,h} openbsd-compat/port-aix.{c,h}]
   Bug #1583: Use system's kerberos principal name on AIX if it's available.
   Based on a patch from and tested by Miguel Sanders 

20091208
 - (dtucker) Bug #1470: Disable OOM-killing of the listening sshd on Linux,
   based on a patch from Vaclav Ovsik and Colin Watson.  ok djm.

20091207
 - (dtucker) Bug #1160: use pkg-config for opensc config if it's available.
   Tested by Martin Paljak.
 - (dtucker) Bug #1677: add conditionals around the source for ssh-askpass.

20091121
 - (tim) [opensshd.init.in] If PidFile is set in sshd_config, use it.
   Bug 1628. OK dtucker@

20091120
 - (djm) [ssh-rand-helper.c] Print error and usage() when passed command-
   line arguments as none are supported. Exit when passed unrecognised
   commandline flags. bz#1568 from gson AT araneus.fi

20091118
 - (djm) [channels.c misc.c misc.h sshd.c] add missing setsockopt() to
   set IPV6_V6ONLY for local forwarding with GatwayPorts=yes. Unify
   setting IPV6_V6ONLY behind a new function misc.c:sock_set_v6only()
   bz#1648, report and fix from jan.kratochvil AT redhat.com
 - (djm) [contrib/gnome-ssh-askpass2.c] Make askpass dialog desktop-modal.
   bz#1645, patch from jchadima AT redhat.com

20091107
 - (dtucker) [authfile.c] Fall back to 3DES for the encryption of private
    keys when built with OpenSSL versions that don't do AES.

20091105
 - (dtucker) [authfile.c] Add OpenSSL compat header so this still builds with
   older versions of OpenSSL.

20091024
 - (dtucker) OpenBSD CVS Sync
   - djm@cvs.openbsd.org 2009/10/11 23:03:15
     [hostfile.c]
     mention the host name that we are looking for in check_host_in_hostfile()
   - sobrado@cvs.openbsd.org 2009/10/17 12:10:39
     [sftp-server.c]
     sort flags.
   - sobrado@cvs.openbsd.org 2009/10/22 12:35:53
     [ssh.1 ssh-agent.1 ssh-add.1]
     use the UNIX-related macros (.At and .Ux) where appropriate.
     ok jmc@
   - sobrado@cvs.openbsd.org 2009/10/22 15:02:12
     [ssh-agent.1 ssh-add.1 ssh.1]
     write UNIX-domain in a more consistent way; while here, replace a
     few remaining ".Tn UNIX" macros with ".Ux" ones.
     pointed out by ratchov@, thanks!
     ok jmc@
   - djm@cvs.openbsd.org 2009/10/22 22:26:13
     [authfile.c]
     switch from 3DES to AES-128 for encryption of passphrase-protected
     SSH protocol 2 private keys; ok several
   - djm@cvs.openbsd.org 2009/10/23 01:57:11
     [sshconnect2.c]
     disallow a hostile server from checking jpake auth by sending an
     out-of-sequence success message. (doesn't affect code enabled by default)
   - dtucker@cvs.openbsd.org 2009/10/24 00:48:34
     [ssh-keygen.1]
     ssh-keygen now uses AES-128 for private keys
 - (dtucker) [mdoc2man.awk] Teach it to understand the .Ux macro.
 - (dtucker) [session.c openbsd-compat/port-linux.{c,h}] Bug #1637: if selinux
   is enabled set the security context to "sftpd_t" before running the
   internal sftp server   Based on a patch from jchadima at redhat.

20091011
 - (dtucker) [configure.ac sftp-client.c] Remove the gyrations required for
   dirent d_type and DTTOIF as we've switched OpenBSD to the more portable
   lstat.
 - (dtucker) OpenBSD CVS Sync
   - markus@cvs.openbsd.org 2009/10/08 14:03:41
     [sshd_config readconf.c ssh_config.5 servconf.c sshd_config.5]
     disable protocol 1 by default (after a transition period of about 10 years)
     ok deraadt
   - jmc@cvs.openbsd.org 2009/10/08 20:42:12
     [sshd_config.5 ssh_config.5 sshd.8 ssh.1]
     some tweaks now that protocol 1 is not offered by default; ok markus
   - dtucker@cvs.openbsd.org 2009/10/11 10:41:26
     [sftp-client.c]
     d_type isn't portable so use lstat to get dirent modes.  Suggested by and
     "looks sane" deraadt@
   - markus@cvs.openbsd.org 2009/10/08 18:04:27
     [regress/test-exec.sh]
     re-enable protocol v1 for the tests.

20091007
 - (dtucker) OpenBSD CVS Sync
   - djm@cvs.openbsd.org 2009/08/12 00:13:00
     [sftp.c sftp.1]
     support most of scp(1)'s commandline arguments in sftp(1), as a first
     step towards making sftp(1) a drop-in replacement for scp(1).
     One conflicting option (-P) has not been changed, pending further
     discussion.
     Patch from carlosvsilvapt@gmail.com as part of his work in the
     Google Summer of Code
  - jmc@cvs.openbsd.org 2009/08/12 06:31:42
     [sftp.1]
     sort options;
   - djm@cvs.openbsd.org 2009/08/13 01:11:19
     [sftp.1 sftp.c]
     Swizzle options: "-P sftp_server_path" moves to "-D sftp_server_path",
     add "-P port" to match scp(1). Fortunately, the -P option is only really
     used by our regression scripts.
     part of larger patch from carlosvsilvapt@gmail.com for his Google Summer
     of Code work; ok deraadt markus
   - jmc@cvs.openbsd.org 2009/08/13 13:39:54
     [sftp.1 sftp.c]
     sync synopsis and usage();
   - djm@cvs.openbsd.org 2009/08/14 18:17:49
     [sftp-client.c]
     make the "get_handle: ..." error messages vaguely useful by allowing
     callers to specify their own error message strings.
   - fgsch@cvs.openbsd.org 2009/08/15 18:56:34
     [auth.h]
     remove unused define. markus@ ok.
     (Id sync only, Portable still uses this.)
   - dtucker@cvs.openbsd.org 2009/08/16 23:29:26
     [sshd_config.5]
     Add PubkeyAuthentication to the list allowed in a Match block (bz #1577)
   - djm@cvs.openbsd.org 2009/08/18 18:36:21
     [sftp-client.h sftp.1 sftp-client.c sftp.c]
     recursive transfer support for get/put and on the commandline
     work mostly by carlosvsilvapt@gmail.com for the Google Summer of Code
     with some tweaks by me; "go for it" deraadt@
  - djm@cvs.openbsd.org 2009/08/18 21:15:59
     [sftp.1]
     fix "get" command usage, spotted by jmc@
   - jmc@cvs.openbsd.org 2009/08/19 04:56:03
     [sftp.1]
     ether -> either;
   - dtucker@cvs.openbsd.org 2009/08/20 23:54:28
     [mux.c]
     subsystem_flag is defined in ssh.c so it's extern; ok djm
   - djm@cvs.openbsd.org 2009/08/27 17:28:52
     [sftp-server.c]
     allow setting an explicit umask on the commandline to override whatever
     default the user has. bz#1229; ok dtucker@ deraadt@ markus@
   - djm@cvs.openbsd.org 2009/08/27 17:33:49
     [ssh-keygen.c]
     force use of correct hash function for random-art signature display
     as it was inheriting the wrong one when bubblebabble signatures were
     activated; bz#1611 report and patch from fwojcik+openssh AT besh.com;
     ok markus@
   - djm@cvs.openbsd.org 2009/08/27 17:43:00
     [sftp-server.8]
     allow setting an explicit umask on the commandline to override whatever
     default the user has. bz#1229; ok dtucker@ deraadt@ markus@
   - djm@cvs.openbsd.org 2009/08/27 17:44:52
     [authfd.c ssh-add.c authfd.h]
     Do not fall back to adding keys without contraints (ssh-add -c / -t ...)
     when the agent refuses the constrained add request. This was a useful
     migration measure back in 2002 when constraints were new, but just
     adds risk now.
     bz #1612, report and patch from dkg AT fifthhorseman.net; ok markus@
   - djm@cvs.openbsd.org 2009/08/31 20:56:02
     [sftp-server.c]
     check correct variable for error message, spotted by martynas@
   - djm@cvs.openbsd.org 2009/08/31 21:01:29
     [sftp-server.8]
     document -e and -h; prodded by jmc@
   - djm@cvs.openbsd.org 2009/09/01 14:43:17
     [ssh-agent.c]
     fix a race condition in ssh-agent that could result in a wedged or
     spinning agent: don't read off the end of the allocated fd_sets, and
     don't issue blocking read/write on agent sockets - just fall back to
     select() on retriable read/write errors. bz#1633 reported and tested
     by "noodle10000 AT googlemail.com"; ok dtucker@ markus@
   - grunk@cvs.openbsd.org 2009/10/01 11:37:33
     [dh.c]
     fix a cast
     ok djm@ markus@
   - djm@cvs.openbsd.org 2009/10/06 04:46:40
     [session.c]
     bz#1596: fflush(NULL) before exec() to ensure that everying (motd
     in particular) has made it out before the streams go away.
   - djm@cvs.openbsd.org 2008/12/07 22:17:48
     [regress/addrmatch.sh]
     match string "passwordauthentication" only at start of line, not anywhere
     in sshd -T output
   - dtucker@cvs.openbsd.org 2009/05/05 07:51:36
     [regress/multiplex.sh]
     Always specify ssh_config for multiplex tests: prevents breakage caused
     by options in ~/.ssh/config.  From Dan Peterson.
   - djm@cvs.openbsd.org 2009/08/13 00:57:17
     [regress/Makefile]
     regression test for port number parsing. written as part of the a2port
     change that went into 5.2 but I forgot to commit it at the time...
   - djm@cvs.openbsd.org 2009/08/13 01:11:55
     [regress/sftp-batch.sh regress/sftp-badcmds.sh regress/sftp.sh
     regress/sftp-cmds.sh regres/sftp-glob.sh]
     date: 2009/08/13 01:11:19;  author: djm;  state: Exp;  lines: +10 -7
     Swizzle options: "-P sftp_server_path" moves to "-D sftp_server_path",
     add "-P port" to match scp(1). Fortunately, the -P option is only really
     used by our regression scripts.
     part of larger patch from carlosvsilvapt@gmail.com for his Google Summer
     of Code work; ok deraadt markus
   - djm@cvs.openbsd.org 2009/08/20 18:43:07
     [regress/ssh-com-sftp.sh]
     fix one sftp -D ... => sftp -P ... conversion that I missed; from Carlos
     Silva for Google Summer of Code
   - dtucker@cvs.openbsd.org 2009/10/06 23:51:49
     [regress/ssh2putty.sh]
     Add OpenBSD tag to make syncs easier
 - (dtucker) [regress/portnum.sh] Import new test.
 - (dtucker) [configure.ac sftp-client.c] DTOTIF is in fs/ffs/dir.h on at
   least dragonflybsd.
 - (dtucker) d_type is not mandated by POSIX, so add fallback code using
    stat(), needed on at least cygwin.

20091002
 - (djm) [Makefile.in] Mention readconf.o in ssh-keysign's make deps.
   spotted by des AT des.no

20090926
 - (djm) [contrib/caldera/openssh.spec contrib/redhat/openssh.spec]
         [contrib/suse/openssh.spec] Update for release
 - (djm) [README] update relnotes URL
 - (djm) [packet.c] Restore EWOULDBLOCK handling that got lost somewhere
 - (djm) Release 5.3p1

20090911
 - (dtucker) [configure.ac] Change the -lresolv check so it works on Mac OS X
   10.6 (which doesn't have BIND8_COMPAT and thus uses res_9_query).  Patch
   from jbasney at ncsa uiuc edu.

20090908
 - (djm) [serverloop.c] Fix test for server-assigned remote forwarding port
   (-R 0:...); bz#1578, spotted and fix by gavin AT emf.net; ok dtucker@

20090901
 - (dtucker) [configure.ac] Bug #1639: use AC_PATH_PROG to search the path for
   krb5-config if it's not in the location specified by --with-kerberos5.
   Patch from jchadima at redhat.

20090829
 - (dtucker) [README.platform] Add text about development packages, based on
   text from Chris Pepper in bug #1631.

20090828
 - dtucker [auth-sia.c] Roll back the change for bug #1241 as it apparently
   causes problems in some Tru64 configurations.
 - (djm) [sshd_config.5] downgrade mention of login.conf to be an example
   and mention PAM as another provider for ChallengeResponseAuthentication;
   bz#1408; ok dtucker@
 - (djm) [sftp-server.c] bz#1535: accept ENOSYS as a fallback error when
   attempting atomic rename(); ok dtucker@
 - (djm) [Makefile.in] bz#1505: Solaris make(1) doesn't accept make variables
   in argv, so pass them in the environment; ok dtucker@
 - (dtucker) [channels.c configure.ac] Bug #1528: skip the tcgetattr call on
    the pty master on Solaris, since it never succeeds and can hang if large
    amounts of data is sent to the slave (eg a copy-paste).  Based on a patch
    originally from Doke Scott, ok djm@
 - (dtucker) [clientloop.c configure.ac defines.h] Make the client's IO buffer
   size a compile-time option and set it to 64k on Cygwin, since Corinna
   reports that it makes a significant difference to performance.  ok djm@
 - (dtucker) [configure.ac] Fix the syntax of the Solaris tcgetattr entry.

20090820
 - (dtucker) [includes.h] Bug #1634: do not include system glob.h if we're not
   using it since the type conflicts can cause problems on FreeBSD.  Patch
   from Jonathan Chen.
 - (dtucker) [session.c openbsd-compat/port-aix.h] Bugs #1249 and #1567: move
   the setpcred call on AIX to immediately before the permanently_set_uid().
   Ensures that we still have privileges when we call chroot and
   pam_open_sesson.  Based on a patch from David Leonard.

20090817
 - (dtucker) [configure.ac] Check for headers before libraries for openssl an
   zlib, which should make the errors slightly more meaningful on platforms
   where there's separate "-devel" packages for those.
 - (dtucker) [sshlogin.c openbsd-compat/port-aix.{c,h}] Bug #1595: make
   PrintLastLog work on AIX.  Based in part on a patch from Miguel Sanders.

20090729
 - (tim) [contrib/cygwin/ssh-user-config] Change script to call correct error
   function. Patch from Corinna Vinschen.

20090713
 - (dtucker) [openbsd-compat/getrrsetbyname.c] Reduce answer buffer size so it
   fits into 16 bits to work around a bug in glibc's resolver where it masks
   off the buffer size at 16 bits.  Patch from Hauke Lampe, ok djm jakob.

20090712
 - (dtucker) [configure.ac] Include sys/param.h for the sys/mount.h test,
   prevents configure complaining on older BSDs.
 - (dtucker [contrib/cygwin/ssh-{host,user}-config] Add license text. Patch
   from Corinna Vinschen.
 - (dtucker) [auth-pam.c] Bug #1534: move the deletion of PAM credentials on
   logout to after the session close.  Patch from Anicka Bernathova,
   originally from Andreas Schwab via Novelll ok djm.

20090707
 - (dtucker) [contrib/cygwin/ssh-host-config] better support for automated
   scripts and fix usage of eval.  Patch from Corinna Vinschen.

20090705
 - (dtucker) OpenBSD CVS Sync
   - andreas@cvs.openbsd.org 2009/06/27 09:29:06
     [packet.h packet.c]
     packet_bacup_state() and packet_restore_state() will be used to
     temporarily save the current state ren resuming a suspended connection.
     ok markus@
   - andreas@cvs.openbsd.org 2009/06/27 09:32:43
     [roaming_common.c roaming.h]
     It may be necessary to retransmit some data when resuming, so add it
     to a buffer when roaming is enabled.
     Most of this code was written by Martin Forssen, maf at appgate dot com.
     ok markus@
   - andreas@cvs.openbsd.org 2009/06/27 09:35:06
     [readconf.h readconf.c]
     Add client option UseRoaming. It doesn't do anything yet but will
     control whether the client tries to use roaming if enabled on the
     server. From Martin Forssen.
     ok markus@
   - markus@cvs.openbsd.org 2009/06/30 14:54:40
     [version.h]
     crank version; ok deraadt
   - dtucker@cvs.openbsd.org 2009/07/02 02:11:47
     [ssh.c]
     allow for long home dir paths (bz #1615).  ok deraadt
     (based in part on a patch from jchadima at redhat)
   - stevesk@cvs.openbsd.org 2009/07/05 19:28:33
     [clientloop.c]
     only send SSH2_MSG_DISCONNECT if we're in compat20; from dtucker@
     ok deraadt@ markus@

20090622
 - (dtucker) OpenBSD CVS Sync
   - dtucker@cvs.openbsd.org 2009/06/22 05:39:28
     [monitor_wrap.c monitor_mm.c ssh-keygen.c auth2.c gss-genr.c sftp-client.c]
     alphabetize includes; reduces diff vs portable and style(9).
     ok stevesk djm
     (Id sync only; these were already in order in -portable)

20090621
 - (dtucker) OpenBSD CVS Sync
   - markus@cvs.openbsd.org 2009/03/17 21:37:00
     [ssh.c]
     pass correct argv[0] to openlog(); ok djm@
  - jmc@cvs.openbsd.org 2009/03/19 15:15:09
     [ssh.1]
     for "Ciphers", just point the reader to the keyword in ssh_config(5), just
     as we do for "MACs": this stops us getting out of sync when the lists
     change;
     fixes documentation/6102, submitted by Peter J. Philipp
     alternative fix proposed by djm
     ok markus
   - tobias@cvs.openbsd.org 2009/03/23 08:31:19
     [ssh-agent.c]
     Fixed a possible out-of-bounds memory access if the environment variable
     SHELL is shorter than 3 characters.
     with input by and ok dtucker
   - tobias@cvs.openbsd.org 2009/03/23 19:38:04
     [ssh-agent.c]
     My previous commit didn't fix the problem at all, so stick at my first
     version of the fix presented to dtucker.
     Issue notified by Matthias Barkhoff (matthias dot barkhoff at gmx dot de).
     ok dtucker
   - sobrado@cvs.openbsd.org 2009/03/26 08:38:39
     [sftp-server.8 sshd.8 ssh-agent.1]
     fix a few typographical errors found by spell(1).
     ok dtucker@, jmc@
   - stevesk@cvs.openbsd.org 2009/04/13 19:07:44
     [sshd_config.5]
     fix possessive; ok djm@
   - stevesk@cvs.openbsd.org 2009/04/14 16:33:42
     [sftp-server.c]
     remove unused option character from getopt() optstring; ok markus@
   - jj@cvs.openbsd.org 2009/04/14 21:10:54
     [servconf.c]
     Fixed a few the-the misspellings in comments. Skipped a bunch in
     binutils,gcc and so on. ok jmc@
   - stevesk@cvs.openbsd.org 2009/04/17 19:23:06
     [session.c]
     use INTERNAL_SFTP_NAME for setproctitle() of in-process sftp-server;
     ok djm@ markus@
   - stevesk@cvs.openbsd.org 2009/04/17 19:40:17
     [sshd_config.5]
     clarify that even internal-sftp needs /dev/log for logging to work; ok
     markus@
   - jmc@cvs.openbsd.org 2009/04/18 18:39:10
     [sshd_config.5]
     tweak previous; ok stevesk
   - stevesk@cvs.openbsd.org 2009/04/21 15:13:17
     [sshd_config.5]
     clarify we cd to user's home after chroot; ok markus@ on
     earlier version; tweaks and ok jmc@
   - andreas@cvs.openbsd.org 2009/05/25 06:48:01
     [channels.c packet.c clientloop.c packet.h serverloop.c monitor_wrap.c
     monitor.c]
     Put the globals in packet.c into a struct and don't access it directly
     from other files. No functional changes.
     ok markus@ djm@
   - andreas@cvs.openbsd.org 2009/05/27 06:31:25
     [canohost.h canohost.c]
     Add clear_cached_addr(), needed for upcoming changes allowing the peer
     address to change.
     ok markus@
   - andreas@cvs.openbsd.org 2009/05/27 06:33:39
     [clientloop.c]
     Send SSH2_MSG_DISCONNECT when the client disconnects. From a larger
     change from Martin Forssen, maf at appgate dot com.
     ok markus@
   - andreas@cvs.openbsd.org 2009/05/27 06:34:36
     [kex.c kex.h]
     Move the KEX_COOKIE_LEN define to kex.h
     ok markus@
   - andreas@cvs.openbsd.org 2009/05/27 06:36:07
     [packet.h packet.c]
     Add packet_put_int64() and packet_get_int64(), part of a larger change
     from Martin Forssen.
     ok markus@
   - andreas@cvs.openbsd.org 2009/05/27 06:38:16
     [sshconnect.h sshconnect.c]
     Un-static ssh_exchange_identification(), part of a larger change from
     Martin Forssen and needed for upcoming changes.
     ok markus@
   - andreas@cvs.openbsd.org 2009/05/28 16:50:16
     [sshd.c packet.c serverloop.c monitor_wrap.c clientloop.c sshconnect.c
     monitor.c Added roaming.h roaming_common.c roaming_dummy.c]
     Keep track of number of bytes read and written. Needed for upcoming
     changes. Most code from Martin Forssen, maf at appgate dot com.
     ok markus@
     Also, applied appropriate changes to Makefile.in
   - andreas@cvs.openbsd.org 2009/06/12 20:43:22
     [monitor.c packet.c]
     Fix warnings found by chl@ and djm@ and change roaming_atomicio's
     return type to match atomicio's
     Diff from djm@, ok markus@
   - andreas@cvs.openbsd.org 2009/06/12 20:58:32
     [packet.c]
     Move some more statics into session_state
     ok markus@ djm@
   - dtucker@cvs.openbsd.org 2009/06/21 07:37:15
     [kexdhs.c kexgexs.c]
     abort if key_sign fails, preventing possible null deref.  Based on report
     from Paolo Ganci, ok markus@ djm@
   - dtucker@cvs.openbsd.org 2009/06/21 09:04:03
     [roaming.h roaming_common.c roaming_dummy.c]
     Add  tags for the benefit of the sync scripts
     Also: pull in the changes for 1.1->1.2 missed in the previous sync.
 - (dtucker) [auth2-jpake.c auth2.c canohost.h session.c] Whitespace and
   header-order changes to reduce diff vs OpenBSD.
 - (dtucker) [servconf.c sshd.c] More whitespace sync.
 - (dtucker) [roaming_common.c roaming_dummy.c] Wrap #include <inttypes.h> in
   ifdef.

20090616
 - (dtucker) [configure.ac defines.h] Bug #1607: handle the case where fsid_t
   is a struct with a __val member.  Fixes build on, eg, Redhat 6.2.

20090504
 - (dtucker) [sshlogin.c] Move the NO_SSH_LASTLOG #ifndef line to include
   variable declarations.  Should prevent unused warnings anywhere it's set
   (only Crays as far as I can tell) and be a no-op everywhere else.

20090318
 - (tim) [configure.ac] Remove setting IP_TOS_IS_BROKEN for Cygwin. The problem
   that setsockopt(IP_TOS) doesn't work on Cygwin has been fixed since 2005.
   Based on patch from vinschen at redhat com.

20090308
 - (dtucker) [auth-passwd.c auth1.c auth2-kbdint.c auth2-none.c auth2-passwd.c
   auth2-pubkey.c session.c openbsd-compat/bsd-cygwin_util.{c,h}
   openbsd-compat/daemon.c] Remove support for Windows 95/98/ME and very old
   version of Cygwin.  Patch from vinschen at redhat com.

20090307
 - (dtucker) [contrib/aix/buildbff.sh] Only try to rename ssh_prng_cmds if it
   exists (it's not created if OpenSSL's PRNG is self-seeded, eg if the OS
   has a /dev/random).
 - (dtucker) [schnorr.c openbsd-compat/openssl-compat.{c,h}] Add
   EVP_DigestUpdate to the OLD_EVP compatibility functions and tell schnorr.c
   to use them.  Allows building with older OpenSSL versions.
 - (dtucker) [configure.ac defines.h] Check for in_port_t and typedef if needed.
 - (dtucker) [configure.ac] Missing comma in type list.
 - (dtucker) [configure.ac openbsd-compat/openssl-compat.{c,h}]
   EVP_DigestUpdate does not exactly match the other OLD_EVP functions (eg
   in openssl 0.9.6) so add an explicit test for it.

20090306
 - (djm) OpenBSD CVS Sync
   - djm@cvs.openbsd.org 2009/03/05 07:18:19
     [auth2-jpake.c jpake.c jpake.h monitor_wrap.c monitor_wrap.h schnorr.c]
     [sshconnect2.c]
     refactor the (disabled) Schnorr proof code to make it a little more
     generally useful
   - djm@cvs.openbsd.org 2009/03/05 11:30:50
     [uuencode.c]
     document what these functions do so I don't ever have to recuse into
     b64_pton/ntop to remember their return values

20090223
 - (djm) OpenBSD CVS Sync
   - djm@cvs.openbsd.org 2009/02/22 23:50:57
     [ssh_config.5 sshd_config.5]
     don't advertise experimental options
   - djm@cvs.openbsd.org 2009/02/22 23:59:25
     [sshd_config.5]
     missing period
   - djm@cvs.openbsd.org 2009/02/23 00:06:15
     [version.h]
     openssh-5.2
 - (djm) [README] update for 5.2
 - (djm) Release openssh-5.2p1

20090222
 - (djm) OpenBSD CVS Sync
   - tobias@cvs.openbsd.org 2009/02/21 19:32:04
     [misc.c sftp-server-main.c ssh-keygen.c]
     Added missing newlines in error messages.
     ok dtucker

20090221
 - (djm) OpenBSD CVS Sync
   - djm@cvs.openbsd.org 2009/02/17 01:28:32
     [ssh_config]
     sync with revised default ciphers; pointed out by dkrause@
   - djm@cvs.openbsd.org 2009/02/18 04:31:21
     [schnorr.c]
     signature should hash over the entire group, not just the generator
     (this is still disabled code)
 - (djm) [contrib/caldera/openssh.spec contrib/redhat/openssh.spec]
   [contrib/suse/openssh.spec] Prepare for 5.2p1

20090216
 - (djm) [regress/conch-ciphers.sh regress/putty-ciphers.sh]
   [regress/putty-kex.sh regress/putty-transfer.sh] Downgrade disabled
   interop tests from FATAL error to a warning. Allows some interop
   tests to proceed if others are missing necessary prerequisites.
 - (djm) [configure.ac] support GNU/kFreeBSD and GNU/kOpensolaris
   systems; patch from Aurelien Jarno via rmh AT aybabtu.com

20090214
 - (djm) OpenBSD CVS Sync
   - dtucker@cvs.openbsd.org 2009/02/02 11:15:14
     [sftp.c]
     Initialize a few variables to prevent spurious "may be used
     uninitialized" warnings from newer gcc's.  ok djm@
   - djm@cvs.openbsd.org 2009/02/12 03:00:56
     [canohost.c canohost.h channels.c channels.h clientloop.c readconf.c]
     [readconf.h serverloop.c ssh.c]
     support remote port forwarding with a zero listen port (-R0:...) to
     dyamically allocate a listen port at runtime (this is actually
     specified in rfc4254); bz#1003 ok markus@
   - djm@cvs.openbsd.org 2009/02/12 03:16:01
     [serverloop.c]
     tighten check for -R0:... forwarding: only allow dynamic allocation
     if want_reply is set in the packet
   - djm@cvs.openbsd.org 2009/02/12 03:26:22
     [monitor.c]
     some paranoia: check that the serialised key is really KEY_RSA before
     diddling its internals
   - djm@cvs.openbsd.org 2009/02/12 03:42:09
     [ssh.1]
     document -R0:... usage
   - djm@cvs.openbsd.org 2009/02/12 03:44:25
     [ssh.1]
     consistency: Dq => Ql
   - djm@cvs.openbsd.org 2009/02/12 03:46:17
     [ssh_config.5]
     document RemoteForward usage with 0 listen port
   - jmc@cvs.openbsd.org 2009/02/12 07:34:20
     [ssh_config.5]
     kill trailing whitespace;
   - markus@cvs.openbsd.org 2009/02/13 11:50:21
     [packet.c]
     check for enc !=NULL in packet_start_discard
   - djm@cvs.openbsd.org 2009/02/14 06:35:49
     [PROTOCOL]
     mention that eow and no-more-sessions extensions are sent only to
     OpenSSH peers

20090212
 - (djm) [sshpty.c] bz#1419: OSX uses cloning ptys that automagically
   set ownership and modes, so avoid explicitly setting them
 - (djm) [configure.ac loginrec.c] bz#1421: fix lastlog support for OSX.
   OSX provides a getlastlogxbyname function that automates the reading of
   a lastlog file. Also, the pututxline function will update lastlog so
   there is no need for loginrec.c to do it explicitly. Collapse some
   overly verbose code while I'm in there.

20090201
 - (dtucker) [defines.h sshconnect.c] INET6_ADDRSTRLEN is now needed in
   channels.c too, so move the definition for non-IP6 platforms to defines.h
   where it can be shared.

20090129
 - (tim) [contrib/cygwin/ssh-host-config] Patch from Corinna Vinschen.
   If the CYGWIN environment variable is empty, the installer script
   should not install the service with an empty CYGWIN variable, but
   rather without setting CYGWNI entirely.
 - (tim) [contrib/cygwin/ssh-host-config] Whitespace cleanup. No code changes.

20090128
 - (tim) [contrib/cygwin/ssh-host-config] Patch from Corinna Vinschen.
   Changes to work on Cygwin 1.5.x as well as on the new Cygwin 1.7.x.
   The information given for the setting of the CYGWIN environment variable
   is wrong for both releases so I just removed it, together with the
   unnecessary (Cygwin 1.5.x) or wrong (Cygwin 1.7.x) default setting.

20081228
 - (djm) OpenBSD CVS Sync
   - stevesk@cvs.openbsd.org 2008/12/09 03:20:42
     [channels.c servconf.c]
     channel_print_adm_permitted_opens() should deal with all the printing
     for that config option.  suggested by markus@; ok markus@ djm@
     dtucker@
   - djm@cvs.openbsd.org 2008/12/09 04:32:22
     [auth2-chall.c]
     replace by-hand string building with xasprinf(); ok deraadt@
   - sobrado@cvs.openbsd.org 2008/12/09 15:35:00
     [sftp.1 sftp.c]
     update for the synopses displayed by the 'help' command, there are a
     few missing flags; add 'bye' to the output of 'help'; sorting and spacing.
     jmc@ suggested replacing .Oo/.Oc with a single .Op macro.
     ok jmc@
   - stevesk@cvs.openbsd.org 2008/12/09 22:37:33
     [clientloop.c]
     fix typo in error message
   - stevesk@cvs.openbsd.org 2008/12/10 03:55:20
     [addrmatch.c]
     o cannot be NULL here but use xfree() to be consistent; ok djm@
   - stevesk@cvs.openbsd.org 2008/12/29 01:12:36
     [ssh-keyscan.1]
     fix example, default key type is rsa for 3+ years; from
     frederic.perrin@resel.fr
   - stevesk@cvs.openbsd.org 2008/12/29 02:23:26
     [pathnames.h]
     no need to escape single quotes in comments
   - okan@cvs.openbsd.org 2008/12/30 00:46:56
     [sshd_config.5]
     add AllowAgentForwarding to available Match keywords list
     ok djm
   - djm@cvs.openbsd.org 2009/01/01 21:14:35
     [channels.c]
     call channel destroy callbacks on receipt of open failure messages.
     fixes client hangs when connecting to a server that has MaxSessions=0
     set spotted by imorgan AT nas.nasa.gov; ok markus@
   - djm@cvs.openbsd.org 2009/01/01 21:17:36
     [kexgexs.c]
     fix hash calculation for KEXGEX: hash over the original client-supplied
     values and not the sanity checked versions that we acutally use;
     bz#1540 reported by john.smith AT arrows.demon.co.uk
     ok markus@
   - djm@cvs.openbsd.org 2009/01/14 01:38:06
     [channels.c]
     support SOCKS4A protocol, from dwmw2 AT infradead.org via bz#1482;
     "looks ok" markus@
   - stevesk@cvs.openbsd.org 2009/01/15 17:38:43
     [readconf.c]
     1) use obsolete instead of alias for consistency
     2) oUserKnownHostsFile not obsolete but oGlobalKnownHostsFile2 is
        so move the comment.
     3) reorder so like options are together
     ok djm@
   - djm@cvs.openbsd.org 2009/01/22 09:46:01
     [channels.c channels.h session.c]
     make Channel->path an allocated string, saving a few bytes here and
     there and fixing bz#1380 in the process; ok markus@
   - djm@cvs.openbsd.org 2009/01/22 09:49:57
     [channels.c]
     oops! I committed the wrong version of the Channel->path diff,
     it was missing some tweaks suggested by stevesk@
   - djm@cvs.openbsd.org 2009/01/22 10:02:34
     [clientloop.c misc.c readconf.c readconf.h servconf.c servconf.h]
     [serverloop.c ssh-keyscan.c ssh.c sshd.c]
     make a2port() return -1 when it encounters an invalid port number
     rather than 0, which it will now treat as valid (needed for future work)
     adjust current consumers of a2port() to check its return value is <= 0,
     which in turn required some things to be converted from u_short => int
     make use of int vs. u_short consistent in some other places too
     feedback & ok markus@
   - djm@cvs.openbsd.org 2009/01/22 10:09:16
     [auth-options.c]
     another chunk of a2port() diff that got away. wtfdjm??
   - djm@cvs.openbsd.org 2009/01/23 07:58:11
     [myproposal.h]
     prefer CTR modes and revised arcfour (i.e w/ discard) modes to CBC
     modes; ok markus@
   - naddy@cvs.openbsd.org 2009/01/24 17:10:22
     [ssh_config.5 sshd_config.5]
     sync list of preferred ciphers; ok djm@
   - markus@cvs.openbsd.org 2009/01/26 09:58:15
     [cipher.c cipher.h packet.c]
     Work around the CPNI-957037 Plaintext Recovery Attack by always
     reading 256K of data on packet size or HMAC errors (in CBC mode only).
     Help, feedback and ok djm@
     Feedback from Martin Albrecht and Paterson Kenny

20090107
 - (djm) [uidswap.c] bz#1412: Support >16 supplemental groups in OS X.
   Patch based on one from vgiffin AT apple.com; ok dtucker@
 - (djm) [channels.c] bz#1419: support "on demand" X11 forwarding via
   launchd on OS X; patch from vgiffin AT apple.com, slightly tweaked;
   ok dtucker@
 - (djm) [contrib/ssh-copy-id.1 contrib/ssh-copy-id] bz#1492: Make
   ssh-copy-id copy id_rsa.pub by default (instead of the legacy "identity"
   key). Patch from cjwatson AT debian.org

20090107
 - (tim) [configure.ac defines.h openbsd-compat/port-uw.c
   openbsd-compat/xcrypt.c] Add SECUREWARE support to OpenServer 6 SVR5 ABI.
   OK djm@ dtucker@
 - (tim) [configure.ac] Move check_for_libcrypt_later=1 in *-*-sysv5*) section.
   OpenServer 6 doesn't need libcrypt.

20081209
 - (djm) OpenBSD CVS Sync
   - djm@cvs.openbsd.org 2008/12/09 02:38:18
     [clientloop.c]
     The ~C escape handler does not work correctly for multiplexed sessions -
     it opens a commandline on the master session, instead of on the slave
     that requested it. Disable it on slave sessions until such time as it
     is fixed; bz#1543 report from Adrian Bridgett via Colin Watson
     ok markus@
   - djm@cvs.openbsd.org 2008/12/09 02:39:59
     [sftp.c]
     Deal correctly with failures in remote stat() operation in sftp,
     correcting fail-on-error behaviour in batchmode. bz#1541 report and
     fix from anedvedicky AT gmail.com; ok markus@
   - djm@cvs.openbsd.org 2008/12/09 02:58:16
     [readconf.c]
     don't leave junk (free'd) pointers around in Forward *fwd argument on
     failure; avoids double-free in ~C -L handler when given an invalid
     forwarding specification; bz#1539 report from adejong AT debian.org
     via Colin Watson; ok markus@ dtucker@
   - djm@cvs.openbsd.org 2008/12/09 03:02:37
     [sftp.1 sftp.c]
     correct sftp(1) and corresponding usage syntax;
     bz#1518 patch from imorgan AT nas.nasa.gov; ok deraadt@ improved diff jmc@

20081208
 - (djm) [configure.ac] bz#1538: better test for ProPolice/SSP: actually
   use some stack in main().
   Report and suggested fix from vapier AT gentoo.org
 - (djm) OpenBSD CVS Sync
   - markus@cvs.openbsd.org 2008/12/02 19:01:07
     [clientloop.c]
     we have to use the recipient's channel number (RFC 4254) for
     SSH2_MSG_CHANNEL_SUCCESS/SSH2_MSG_CHANNEL_FAILURE messages,
     otherwise we trigger 'Non-public channel' error messages on sshd
     systems with clientkeepalive enabled; noticed by sturm; ok djm;
   - markus@cvs.openbsd.org 2008/12/02 19:08:59
     [serverloop.c]
     backout 1.149, since it's not necessary and openssh clients send
     broken CHANNEL_FAILURE/SUCCESS messages since about 2004; ok djm@
   - markus@cvs.openbsd.org 2008/12/02 19:09:38
     [channels.c]
     s/remote_id/id/ to be more consistent with other code; ok djm@

20081201
 - (dtucker) [contrib/cygwin/{Makefile,ssh-host-config}]  Add new doc files
   and tweak the is-sshd-running check in ssh-host-config.  Patch from
   vinschen at redhat com.
 - (dtucker) OpenBSD CVS Sync
   - markus@cvs.openbsd.org 2008/11/21 15:47:38
     [packet.c]
     packet_disconnect() on padding error, too.  should reduce the success
     probability for the CPNI-957037 Plaintext Recovery Attack to 2^-18
     ok djm@
   - dtucker@cvs.openbsd.org 2008/11/30 11:59:26
     [monitor_fdpass.c]
     Retry sendmsg/recvmsg on EAGAIN and EINTR; ok djm@

20081123
 - (dtucker) [monitor_fdpass.c] Reduce diff vs OpenBSD by moving some
    declarations, removing an unnecessary union member and adding whitespace.
    cmsgbuf.tmp thing spotted by des at des no, ok djm some time ago.

20081118
 - (tim) [addrmatch.c configure.ac] Some platforms do not have sin6_scope_id
   member of sockaddr_in6. Also reported in Bug 1491 by David Leonard. OK and
   feedback by djm@

20081111
 - (dtucker) OpenBSD CVS Sync
   - jmc@cvs.openbsd.org 2008/11/05 11:22:54
     [servconf.c]
     passord -> password;
     fixes user/5975 from Rene Maroufi
   - stevesk@cvs.openbsd.org 2008/11/07 00:42:12
     [ssh-keygen.c]
     spelling/typo in comment
   - stevesk@cvs.openbsd.org 2008/11/07 18:50:18
     [nchan.c]
     add space to some log/debug messages for readability; ok djm@ markus@
   - dtucker@cvs.openbsd.org 2008/11/07 23:34:48
     [auth2-jpake.c]
     Move JPAKE define to make life easier for portable.  ok djm@
   - tobias@cvs.openbsd.org 2008/11/09 12:34:47
     [session.c ssh.1]
     typo fixed (overriden -> overridden)
     ok espie, jmc
   - stevesk@cvs.openbsd.org 2008/11/11 02:58:09
     [servconf.c]
     USE_AFS not referenced so remove #ifdef.  fixes sshd -T not printing
     kerberosgetafstoken. ok dtucker@
     (Id sync only, we still want the ifdef in portable)
   - stevesk@cvs.openbsd.org 2008/11/11 03:55:11
     [channels.c]
     for sshd -T print 'permitopen any' vs. 'permitopen' for case of no
     permitopen's; ok and input dtucker@
   - djm@cvs.openbsd.org 2008/11/10 02:06:35
     [regress/putty-ciphers.sh]
     PuTTY supports AES CTR modes, so interop test against them too

20081105
 - OpenBSD CVS Sync
   - djm@cvs.openbsd.org 2008/11/03 08:59:41
     [servconf.c]
     include MaxSessions in sshd -T output; patch from imorgan AT nas.nasa.gov
   - djm@cvs.openbsd.org 2008/11/04 07:58:09
     [auth.c]
     need unistd.h for close() prototype
     (ID sync only)
   - djm@cvs.openbsd.org 2008/11/04 08:22:13
     [auth.h auth2.c monitor.c monitor.h monitor_wrap.c monitor_wrap.h]
     [readconf.c readconf.h servconf.c servconf.h ssh2.h ssh_config.5]
     [sshconnect2.c sshd_config.5 jpake.c jpake.h schnorr.c auth2-jpake.c]
     [Makefile.in]
     Add support for an experimental zero-knowledge password authentication
     method using the J-PAKE protocol described in F. Hao, P. Ryan,
     "Password Authenticated Key Exchange by Juggling", 16th Workshop on
     Security Protocols, Cambridge, April 2008.
     
     This method allows password-based authentication without exposing
     the password to the server. Instead, the client and server exchange
     cryptographic proofs to demonstrate of knowledge of the password while
     revealing nothing useful to an attacker or compromised endpoint.
     
     This is experimental, work-in-progress code and is presently
     compiled-time disabled (turn on -DJPAKE in Makefile.inc).
     
     "just commit it.  It isn't too intrusive." deraadt@
   - stevesk@cvs.openbsd.org 2008/11/04 19:18:00
     [readconf.c]
     because parse_forward() is now used to parse all forward types (DLR),
     and it malloc's space for host variables, we don't need to malloc
     here.  fixes small memory leaks.
     
     previously dynamic forwards were not parsed in parse_forward() and
     space was not malloc'd in that case.
     
     ok djm@
   - stevesk@cvs.openbsd.org 2008/11/05 03:23:09
     [clientloop.c ssh.1]
     add dynamic forward escape command line; ok djm@

20081103
 - OpenBSD CVS Sync
   - sthen@cvs.openbsd.org 2008/07/24 23:55:30
     [ssh-keygen.1]
     Add "ssh-keygen -F -l" to synopsis (displays fingerprint from
     known_hosts).  ok djm@
   - grunk@cvs.openbsd.org 2008/07/25 06:56:35
     [ssh_config]
     Add VisualHostKey to example file, ok djm@
   - grunk@cvs.openbsd.org 2008/07/25 07:05:16
     [key.c]
     In random art visualization, make sure to use the end marker only at the
     end.  Initial diff by Dirk Loss, tweaks and ok djm@
  - markus@cvs.openbsd.org 2008/07/31 14:48:28
     [sshconnect2.c]
     don't allocate space for empty banners; report t8m at centrum.cz;
     ok deraadt
   - krw@cvs.openbsd.org 2008/08/02 04:29:51
     [ssh_config.5]
     whitepsace -> whitespace. From Matthew Clarke via bugs@.
   - djm@cvs.openbsd.org 2008/08/21 04:09:57
     [session.c]
     allow ForceCommand internal-sftp with arguments. based on patch from
     michael.barabanov AT gmail.com; ok markus@
   - djm@cvs.openbsd.org 2008/09/06 12:24:13
     [kex.c]
     OpenSSL 0.9.8h supplies a real EVP_sha256 so we do not need our
     replacement anymore
     (ID sync only for portable - we still need this)
   - markus@cvs.openbsd.org 2008/09/11 14:22:37
     [compat.c compat.h nchan.c ssh.c]
     only send eow and no-more-sessions requests to openssh 5 and newer;
     fixes interop problems with broken ssh v2 implementations; ok djm@
   - millert@cvs.openbsd.org 2008/10/02 14:39:35
     [session.c]
     Convert an unchecked strdup to xstrdup.  OK deraadt@
  - jmc@cvs.openbsd.org 2008/10/03 13:08:12
     [sshd.8]
     do not give an example of how to chmod files: we can presume the user
     knows that. removes an ambiguity in the permission of authorized_keys;
     ok deraadt
   - deraadt@cvs.openbsd.org 2008/10/03 23:56:28
     [sshconnect2.c]
     Repair strnvis() buffersize of 4*n+1, with termination gauranteed by the
     function.
     spotted by des@freebsd, who commited an incorrect fix to the freebsd tree
     and (as is fairly typical) did not report the problem to us.  But this fix
     is correct.
     ok djm
   - djm@cvs.openbsd.org 2008/10/08 23:34:03
     [ssh.1 ssh.c]
     Add -y option to force logging via syslog rather than stderr.
     Useful for daemonised ssh connection (ssh -f). Patch originally from
     and ok'd by markus@
   - djm@cvs.openbsd.org 2008/10/09 03:50:54
     [servconf.c sshd_config.5]
     support setting PermitEmptyPasswords in a Match block
     requested in PR3891; ok dtucker@
   - jmc@cvs.openbsd.org 2008/10/09 06:54:22
     [ssh.c]
     add -y to usage();
   - stevesk@cvs.openbsd.org 2008/10/10 04:55:16
     [scp.c]
     spelling in comment; ok djm@
   - stevesk@cvs.openbsd.org 2008/10/10 05:00:12
     [key.c]
     typo in error message; ok djm@
   - stevesk@cvs.openbsd.org 2008/10/10 16:43:27
     [ssh_config.5]
     use 'Privileged ports can be forwarded only when logging in as root on
     the remote machine.' for RemoteForward just like ssh.1 -R.
     ok djm@ jmc@
   - stevesk@cvs.openbsd.org 2008/10/14 18:11:33
     [sshconnect.c]
     use #define ROQUIET here; no binary change. ok dtucker@
   - stevesk@cvs.openbsd.org 2008/10/17 18:36:24
     [ssh_config.5]
     correct and clarify VisualHostKey; ok jmc@
   - stevesk@cvs.openbsd.org 2008/10/30 19:31:16
     [clientloop.c sshd.c]
     don't need to #include "monitor_fdpass.h"
   - stevesk@cvs.openbsd.org 2008/10/31 15:05:34
     [dispatch.c]
     remove unused #define DISPATCH_MIN; ok markus@
   - djm@cvs.openbsd.org 2008/11/01 04:50:08
     [sshconnect2.c]
     sprinkle ARGSUSED on dispatch handlers
     nuke stale unusued prototype
   - stevesk@cvs.openbsd.org 2008/11/01 06:43:33
     [channels.c]
     fix some typos in log messages; ok djm@
   - sobrado@cvs.openbsd.org 2008/11/01 11:14:36
     [ssh-keyscan.1 ssh-keyscan.c]
     the ellipsis is not an optional argument; while here, improve spacing.
   - stevesk@cvs.openbsd.org 2008/11/01 17:40:33
     [clientloop.c readconf.c readconf.h ssh.c]
     merge dynamic forward parsing into parse_forward();
     'i think this is OK' djm@
   - stevesk@cvs.openbsd.org 2008/11/02 00:16:16
     [ttymodes.c]
     protocol 2 tty modes support is now 7.5 years old so remove these
     debug3()s; ok deraadt@
   - stevesk@cvs.openbsd.org 2008/11/03 01:07:02
     [readconf.c]
     remove valueless comment
   - stevesk@cvs.openbsd.org 2008/11/03 02:44:41
     [readconf.c]
     fix comment
 - (djm) [contrib/caldera/ssh-host-keygen contrib/suse/rc.sshd]
   Make example scripts generate keys with default sizes rather than fixed,
   non-default 1024 bits; patch from imorgan AT nas.nasa.gov
 - (djm) [contrib/sshd.pam.generic contrib/caldera/sshd.pam]
   [contrib/redhat/sshd.pam] Move pam_nologin to account group from
   incorrect auth group in example files;
   patch from imorgan AT nas.nasa.gov

20080906
 - (dtucker) [config.guess config.sub] Update to latest versions from
   http://git.savannah.gnu.org/gitweb/ (2008-04-14 and 2008-06-16
   respectively).

20080830
 - (dtucker) [openbsd-compat/bsd-poll.c] correctly check for number of FDs
   larger than FD_SETSIZE (OpenSSH only ever uses poll with one fd).  Patch
   from Nicholas Marriott.

20080721
 - (djm) OpenBSD CVS Sync
   - djm@cvs.openbsd.org 2008/07/23 07:36:55
     [servconf.c]
     do not try to print options that have been compile-time disabled
     in config test mode (sshd -T); report from nix-corp AT esperi.org.uk
     ok dtucker@
 - (djm) [servconf.c] Print UsePAM option in config test mode (when it
   has been compiled in); report from nix-corp AT esperi.org.uk
   ok dtucker@

20080721
 - (djm) OpenBSD CVS Sync
   - jmc@cvs.openbsd.org 2008/07/18 22:51:01
     [sftp-server.8]
     no need for .Pp before or after .Sh;
   - djm@cvs.openbsd.org 2008/07/21 08:19:07
     [version.h]
     openssh-5.1
 - (djm) [README contrib/caldera/openssh.spec contrib/redhat/openssh.spec]
   [contrib/suse/openssh.spec] Update version number in README and RPM specs
 - (djm) Release OpenSSH-5.1

20080717
 - (djm) OpenBSD CVS Sync
   - djm@cvs.openbsd.org 2008/07/17 08:48:00
     [sshconnect2.c]
     strnvis preauth banner; pointed out by mpf@ ok markus@
   - djm@cvs.openbsd.org 2008/07/17 08:51:07
     [auth2-hostbased.c]
     strip trailing '.' from hostname when HostbasedUsesNameFromPacketOnly=yes
     report and patch from res AT qoxp.net (bz#1200); ok markus@
 - (dtucker) [openbsd-compat/bsd-cygwin_util.c]  Remove long-unneeded compat
   code, replace with equivalent cygwin library call.  Patch from vinschen
   at redhat.com, ok djm@.
 - (djm) [sshconnect2.c] vis.h isn't available everywhere

20080716
 - OpenBSD CVS Sync
   - djm@cvs.openbsd.org 2008/07/15 02:23:14
     [sftp.1]
     number of pipelined requests is now 64;
     prodded by Iain.Morgan AT nasa.gov
   - djm@cvs.openbsd.org 2008/07/16 11:51:14
     [clientloop.c]
     rename variable first_gc -> last_gc (since it is actually the last
     in the list).
   - djm@cvs.openbsd.org 2008/07/16 11:52:19
     [channels.c]
     this loop index should be automatic, not static

20080714
 - (djm) OpenBSD CVS Sync
   - sthen@cvs.openbsd.org 2008/07/13 21:22:52
     [ssh-keygen.c]
     Change "ssh-keygen -F [host] -l" to not display random art unless
     -v is also specified, making it consistent with the manual and other
     uses of -l.
     ok grunk@
   - djm@cvs.openbsd.org 2008/07/13 22:13:07
     [channels.c]
     use struct sockaddr_storage instead of struct sockaddr for accept(2)
     address argument. from visibilis AT yahoo.com in bz#1485; ok markus@
   - djm@cvs.openbsd.org 2008/07/13 22:16:03
     [sftp.c]
     increase number of piplelined requests so they properly fill the
     (recently increased) channel window. prompted by rapier AT psc.edu;
     ok markus@
   - djm@cvs.openbsd.org 2008/07/14 01:55:56
     [sftp-server.8]
     mention requirement for /dev/log inside chroot when using sftp-server
     with ChrootDirectory
 - (djm) [openbsd-compat/bindresvport.c] Rename variables s/sin/in/ to
   avoid clash with sin(3) function; reported by
   cristian.ionescu-idbohrn AT axis.com
 - (djm) [openbsd-compat/rresvport.c] Add unistd.h for missing close()
   prototype; reported by cristian.ionescu-idbohrn AT axis.com
 - (djm) [umac.c] Rename variable s/buffer_ptr/bufp/ to avoid clash;
   reported by cristian.ionescu-idbohrn AT axis.com
 - (djm) [contrib/cygwin/Makefile contrib/cygwin/ssh-host-config]
   [contrib/cygwin/ssh-user-config contrib/cygwin/sshd-inetd]
   Revamped and simplified Cygwin ssh-host-config script that uses
   unified csih configuration tool. Requires recent Cygwin.
   Patch from vinschen AT redhat.com

20080712
 - (djm) OpenBSD CVS Sync
   - djm@cvs.openbsd.org 2008/07/12 04:52:50
     [channels.c]
     unbreak; move clearing of cctx struct to before first use
     reported by dkrause@
   - djm@cvs.openbsd.org 2008/07/12 05:33:41
     [scp.1]
     better description for -i flag:
     s/RSA authentication/public key authentication/
 - (djm) [openbsd-compat/fake-rfc2553.c openbsd-compat/fake-rfc2553.h]
   return EAI_FAMILY when trying to lookup unsupported address family;
   from vinschen AT redhat.com

20080711
 - (djm) OpenBSD CVS Sync
   - stevesk@cvs.openbsd.org 2008/07/07 00:31:41
     [ttymodes.c]
     we don't need arg after the debug3() was removed.  from lint.
     ok djm@
   - stevesk@cvs.openbsd.org 2008/07/07 23:32:51
     [key.c]
     /*NOTREACHED*/ for lint warning:
       warning: function key_equal falls off bottom without returning value
     ok djm@
   - markus@cvs.openbsd.org 2008/07/10 18:05:58
     [channels.c]
     missing bzero; from mickey; ok djm@
   - markus@cvs.openbsd.org 2008/07/10 18:08:11
     [clientloop.c monitor.c monitor_wrap.c packet.c packet.h sshd.c]
     sync v1 and v2 traffic accounting; add it to sshd, too;
     ok djm@, dtucker@

20080709
 - (djm) [Makefile.in] Print "all tests passed" when all regress tests pass
 - (djm) [auth1.c] Fix format string vulnerability in protocol 1 PAM
   account check failure path. The vulnerable format buffer is supplied
   from PAM and should not contain attacker-supplied data.
 - (djm) [auth.c] Missing unistd.h for close()
 - (djm) [configure.ac] Add -Wformat-security to CFLAGS for gcc 3.x and 4.x

20080705
 - (djm) [auth.c] Fixed test for locked account on HP/UX with shadowed
   passwords disabled. bz#1083 report & patch from senthilkumar_sen AT
   hotpop.com, w/ dtucker@
 - (djm) [atomicio.c configure.ac] Disable poll() fallback in atomiciov for
   Tru64. readv doesn't seem to be a comparable object there.
   bz#1386, patch from dtucker@ ok me
 - (djm) [Makefile.in] Pass though pass to conch for interop tests
 - (djm) [configure.ac] unbreak: remove extra closing brace
 - (djm) OpenBSD CVS Sync
   - djm@cvs.openbsd.org 2008/07/04 23:08:25
     [packet.c]
     handle EINTR in packet_write_poll()l ok dtucker@
   - djm@cvs.openbsd.org 2008/07/04 23:30:16
     [auth1.c auth2.c]
     Make protocol 1 MaxAuthTries logic match protocol 2's.
     Do not treat the first protocol 2 authentication attempt as
     a failure IFF it is for method "none".
     Makes MaxAuthTries' user-visible behaviour identical for
     protocol 1 vs 2.
     ok dtucker@
   - djm@cvs.openbsd.org 2008/07/05 05:16:01
     [PROTOCOL]
     grammar

20080704
 - (dtucker) OpenBSD CVS Sync
   - djm@cvs.openbsd.org 2008/07/02 13:30:34
     [auth2.c]
     really really remove the freebie "none" auth try for protocol 2
   - djm@cvs.openbsd.org 2008/07/02 13:47:39
     [ssh.1 ssh.c]
     When forking after authentication ("ssh -f") with ExitOnForwardFailure
     enabled, delay the fork until after replies for any -R forwards have
     been seen. Allows for robust detection of -R forward failure when
     using -f (similar to bz#92); ok dtucker@
   - otto@cvs.openbsd.org 2008/07/03 21:46:58
     [auth2-pubkey.c]
     avoid nasty double free; ok dtucker@ djm@
   - djm@cvs.openbsd.org 2008/07/04 03:44:59
     [servconf.c groupaccess.h groupaccess.c]
     support negation of groups in "Match group" block (bz#1315); ok dtucker@
   - dtucker@cvs.openbsd.org 2008/07/04 03:47:02
     [monitor.c]
     Make debug a little clearer.  ok djm@
   - djm@cvs.openbsd.org 2008/06/30 08:07:34
     [regress/key-options.sh]
     shell portability: use "=" instead of "==" in test(1) expressions,
     double-quote string with backslash escaped /
   - djm@cvs.openbsd.org 2008/06/30 10:31:11
     [regress/{putty-transfer,putty-kex,putty-ciphers}.sh]
     remove "set -e" left over from debugging
   - djm@cvs.openbsd.org 2008/06/30 10:43:03
     [regress/conch-ciphers.sh]
     explicitly disable conch options that could interfere with the test
 - (dtucker) [sftp-server.c] Bug #1447: fall back to racy rename if link
   returns EXDEV.  Patch from Mike Garrison, ok djm@
 - (djm) [atomicio.c channels.c clientloop.c defines.h includes.h]
   [packet.c scp.c serverloop.c sftp-client.c ssh-agent.c ssh-keyscan.c]
   [sshd.c] Explicitly handle EWOULDBLOCK wherever we handle EAGAIN, on
   some platforms (HP nonstop) it is a distinct errno;
   bz#1467 reported by sconeu AT yahoo.com; ok dtucker@

20080702
 - (dtucker) OpenBSD CVS Sync
    - djm@cvs.openbsd.org 2008/06/30 08:05:59
      [PROTOCOL.agent]
      typo: s/constraint_date/constraint_data/
   - djm@cvs.openbsd.org 2008/06/30 12:15:39
     [serverloop.c]
     only pass channel requests on session channels through to the session
     channel handler, avoiding spurious log messages; ok! markus@
   - djm@cvs.openbsd.org 2008/06/30 12:16:02
     [nchan.c]
     only send eow@openssh.com notifications for session channels; ok! markus@
   - djm@cvs.openbsd.org 2008/06/30 12:18:34
     [PROTOCOL]
     clarify that eow@openssh.com is only sent on session channels
   - dtucker@cvs.openbsd.org 2008/07/01 07:20:52
     [sshconnect.c]
     Check ExitOnForwardFailure if forwardings are disabled due to a failed
     host key check.  ok djm@
   - dtucker@cvs.openbsd.org 2008/07/01 07:24:22
     [sshconnect.c sshd.c]
     Send CR LF during protocol banner exchanges, but only for Protocol 2 only,
     in order to comply with RFC 4253.  bz #1443, ok djm@
   - stevesk@cvs.openbsd.org 2008/07/01 23:12:47
     [PROTOCOL.agent]
     fix some typos; ok djm@
   - djm@cvs.openbsd.org 2008/07/02 02:24:18
     [sshd_config sshd_config.5 sshd.8 servconf.c]
     increase default size of ssh protocol 1 ephemeral key from 768 to 1024
     bits; prodded by & ok dtucker@ ok deraadt@
   - dtucker@cvs.openbsd.org 2008/07/02 12:03:51
     [auth-rsa.c auth.c auth2-pubkey.c auth.h]
     Merge duplicate host key file checks, based in part on a patch from Rob
     Holland via bz #1348 .  Also checks for non-regular files during protocol
     1 RSA auth.  ok djm@
   - djm@cvs.openbsd.org 2008/07/02 12:36:39
     [auth2-none.c auth2.c]
     Make protocol 2 MaxAuthTries behaviour a little more sensible:
     Check whether client has exceeded MaxAuthTries before running
     an authentication method and skip it if they have, previously it
     would always allow one try (for "none" auth).
     Preincrement failure count before post-auth test - previously this
     checked and postincremented, also to allow one "none" try.
     Together, these two changes always count the "none" auth method
     which could be skipped by a malicious client (e.g. an SSH worm)
     to get an extra attempt at a real auth method. They also make
     MaxAuthTries=0 a useful way to block users entirely (esp. in a
     sshd_config Match block).
     Also, move sending of any preauth banner from "none" auth method
     to the first call to input_userauth_request(), so worms that skip
     the "none" method get to see it too.

20080630
 - (djm) OpenBSD CVS Sync
   - dtucker@cvs.openbsd.org 2008/06/10 23:13:43
     [regress/Makefile regress/key-options.sh]
     Add regress test for key options.  ok djm@
   - dtucker@cvs.openbsd.org 2008/06/11 23:11:40
     [regress/Makefile]
     Don't run cipher-speed test by default; mistakenly enabled by me
   - djm@cvs.openbsd.org 2008/06/28 13:57:25
     [regress/Makefile regress/test-exec.sh regress/conch-ciphers.sh]
     very basic regress test against Twisted Conch in "make interop"
     target (conch is available in ports/devel/py-twisted/conch);
     ok markus@
 - (djm) [regress/Makefile] search for conch by path, like we do putty

20080629
 - (djm) OpenBSD CVS Sync
   - martynas@cvs.openbsd.org 2008/06/21 07:46:46
     [sftp.c]
     use optopt to get invalid flag, instead of return value of getopt,
     which is always '?';  ok djm@
   - otto@cvs.openbsd.org 2008/06/25 11:13:43
     [key.c]
     add key length to visual fingerprint; zap magical constants;
     ok grunk@ djm@
   - djm@cvs.openbsd.org 2008/06/26 06:10:09
     [sftp-client.c sftp-server.c]
     allow the sftp chmod(2)-equivalent operation to set set[ug]id/sticky
     bits. Note that this only affects explicit setting of modes (e.g. via
     sftp(1)'s chmod command) and not file transfers. (bz#1310)
     ok deraadt@ at c2k8
   - djm@cvs.openbsd.org 2008/06/26 09:19:40
     [dh.c dh.h moduli.c]
     when loading moduli from /etc/moduli in sshd(8), check that they
     are of the expected "safe prime" structure and have had
     appropriate primality tests performed;
     feedback and ok dtucker@
   - grunk@cvs.openbsd.org 2008/06/26 11:46:31
     [readconf.c readconf.h ssh.1 ssh_config.5 sshconnect.c]
     Move SSH Fingerprint Visualization away from sharing the config option
     CheckHostIP to an own config option named VisualHostKey.
     While there, fix the behaviour that ssh would draw a random art picture
     on every newly seen host even when the option was not enabled.
     prodded by deraadt@, discussions,
     help and ok markus@ djm@ dtucker@
   - jmc@cvs.openbsd.org 2008/06/26 21:11:46
     [ssh.1]
     add VisualHostKey to the list of options listed in -o;
   - djm@cvs.openbsd.org 2008/06/28 07:25:07
     [PROTOCOL]
     spelling fixes
   - djm@cvs.openbsd.org 2008/06/28 13:58:23
     [ssh-agent.c]
     refuse to add a key that has unknown constraints specified;
     ok markus
   - djm@cvs.openbsd.org 2008/06/28 14:05:15
     [ssh-agent.c]
     reset global compat flag after processing a protocol 2 signature
     request with the legacy DSA encoding flag set; ok markus
   - djm@cvs.openbsd.org 2008/06/28 14:08:30
     [PROTOCOL PROTOCOL.agent]
     document the protocol used by ssh-agent; "looks ok" markus@

20080628
 - (djm) [RFC.nroff contrib/cygwin/Makefile contrib/suse/openssh.spec]
   RFC.nroff lacks a license, remove it (it is long gone in OpenBSD).

20080626
 - (djm) [Makefile.in moduli.5] Include moduli(5) manpage from OpenBSD.
   (bz#1372)
 - (djm) [ contrib/caldera/openssh.spec contrib/redhat/openssh.spec]
   [contrib/suse/openssh.spec] Include moduli.5 in RPM spec files.

20080616
 - (dtucker) OpenBSD CVS Sync
   - dtucker@cvs.openbsd.org 2008/06/16 13:22:53
     [session.c channels.c]
     Rename the isatty argument to is_tty so we don't shadow
     isatty(3).  ok markus@
 - (dtucker) [channels.c] isatty -> is_tty here too.

20080615
 - (dtucker) [configure.ac] Enable -fno-builtin-memset when using gcc.
 - OpenBSD CVS Sync
   - dtucker@cvs.openbsd.org 2008/06/14 15:49:48
     [sshd.c]
     wrap long line at 80 chars
   - dtucker@cvs.openbsd.org 2008/06/14 17:07:11
     [sshd.c]
     ensure default umask disallows at least group and world write; ok djm@
   - djm@cvs.openbsd.org 2008/06/14 18:33:43
     [session.c]
     suppress the warning message from chdir(homedir) failures
     when chrooted (bz#1461); ok dtucker
   - dtucker@cvs.openbsd.org 2008/06/14 19:42:10
     [scp.1]
     Mention that scp follows symlinks during -r.  bz #1466,
     from nectar at apple
   - dtucker@cvs.openbsd.org 2008/06/15 16:55:38
     [sshd_config.5]
     MaxSessions is allowed in a Match block too
   - dtucker@cvs.openbsd.org 2008/06/15 16:58:40
     [servconf.c sshd_config.5]
     Allow MaxAuthTries within a Match block.  ok djm@
   - djm@cvs.openbsd.org 2008/06/15 20:06:26
     [channels.c channels.h session.c]
     don't call isatty() on a pty master, instead pass a flag down to
     channel_set_fds() indicating that te fds refer to a tty. Fixes a
     hang on exit on Solaris (bz#1463) in portable but is actually
     a generic bug; ok dtucker deraadt markus

20080614
 - (djm) [openbsd-compat/sigact.c] Avoid NULL derefs in ancient sigaction
   replacement code; patch from ighighi AT gmail.com in bz#1240;
   ok dtucker

20080613
 - (dtucker) OpenBSD CVS Sync
   - deraadt@cvs.openbsd.org 2008/06/13 09:44:36
     [packet.c]
     compile on older gcc; no decl after code
   - dtucker@cvs.openbsd.org 2008/06/13 13:56:59
     [monitor.c]
     Clear key options in the monitor on failed authentication, prevents
     applying additional restrictions to non-pubkey authentications in
     the case where pubkey fails but another method subsequently succeeds.
     bz #1472, found by Colin Watson, ok markus@ djm@
   - dtucker@cvs.openbsd.org 2008/06/13 14:18:51
     [auth2-pubkey.c auth-rhosts.c]
     Include unistd.h for close(), prevents warnings in -portable
   - dtucker@cvs.openbsd.org 2008/06/13 17:21:20
     [mux.c]
     Friendlier error messages for mux fallback.  ok djm@
   - dtucker@cvs.openbsd.org 2008/06/13 18:55:22
     [scp.c]
     Prevent -Wsign-compare warnings on LP64 systems.  bz #1192, ok deraadt@
   - grunk@cvs.openbsd.org 2008/06/13 20:13:26
     [ssh.1]
     Explain the use of SSH fpr visualization using random art, and cite the
     original scientific paper inspiring that technique.
     Much help with English and nroff by jmc@, thanks.
 - (dtucker) [configure.ac] Bug #1276: avoid linking against libgssapi, which
   despite its name doesn't seem to implement all of GSSAPI.  Patch from
   Jan Engelhardt, sanity checked by Simon Wilkinson.

20080612
 - (dtucker) OpenBSD CVS Sync
   - jmc@cvs.openbsd.org 2008/06/11 07:30:37
     [sshd.8]
     kill trailing whitespace;
   - grunk@cvs.openbsd.org 2008/06/11 21:01:35
     [ssh_config.5 key.h readconf.c readconf.h ssh-keygen.1 ssh-keygen.c key.c
      sshconnect.c]
     Introduce SSH Fingerprint ASCII Visualization, a technique inspired by the
     graphical hash visualization schemes known as "random art", and by
     Dan Kaminsky's musings on the subject during a BlackOp talk at the
     23C3 in Berlin.
     Scientific publication (original paper):
     "Hash Visualization: a New Technique to improve Real-World Security",
     Perrig A. and Song D., 1999, International Workshop on Cryptographic
     Techniques and E-Commerce (CrypTEC '99)
     http://sparrow.ece.cmu.edu/~adrian/projects/validation/validation.pdf
     The algorithm used here is a worm crawling over a discrete plane,
     leaving a trace (augmenting the field) everywhere it goes.
     Movement is taken from dgst_raw 2bit-wise.  Bumping into walls
     makes the respective movement vector be ignored for this turn,
     thus switching to the other color of the chessboard.
     Graphs are not unambiguous for now, because circles in graphs can be
     walked in either direction.
     discussions with several people,
     help, corrections and ok markus@ djm@
   - grunk@cvs.openbsd.org 2008/06/11 21:38:25
     [ssh-keygen.c]
     ssh-keygen -lv -f /etc/ssh/ssh_host_rsa_key.pub
     would not display you the random art as intended, spotted by canacar@
   - grunk@cvs.openbsd.org 2008/06/11 22:20:46
     [ssh-keygen.c ssh-keygen.1]
     ssh-keygen would write fingerprints to STDOUT, and random art to STDERR,
     that is not how it was envisioned.
     Also correct manpage saying that -v is needed along with -l for it to work.
     spotted by naddy@
   - otto@cvs.openbsd.org 2008/06/11 23:02:22
     [key.c]
     simpler way of computing the augmentations; ok grunk@
   - grunk@cvs.openbsd.org 2008/06/11 23:03:56
     [ssh_config.5]
     CheckHostIP set to ``fingerprint'' will display both hex and random art
     spotted by naddy@
   - grunk@cvs.openbsd.org 2008/06/11 23:51:57
     [key.c]
     #define statements that are not atoms need braces around them, else they
     will cause trouble in some cases.
     Also do a computation of -1 once, and not in a loop several times.
     spotted by otto@
   - dtucker@cvs.openbsd.org 2008/06/12 00:03:49
     [dns.c canohost.c sshconnect.c]
     Do not pass "0" strings as ports to getaddrinfo because the lookups
     can slow things down and we never use the service info anyway. bz
     #859, patch from YOSHIFUJI Hideaki and John Devitofranceschi.  ok
     deraadt@ djm@
     djm belives that the reason for the "0" strings is to ensure that
     it's not possible to call getaddrinfo with both host and port being
     NULL.  In the case of canohost.c host is a local array.  In the
     case of sshconnect.c, it's checked for null immediately before use.
     In dns.c it ultimately comes from ssh.c:main() and is guaranteed to
     be non-null but it's not obvious, so I added a warning message in
     case it is ever passed a null.
   - grunk@cvs.openbsd.org 2008/06/12 00:13:55
     [sshconnect.c]
     Make ssh print the random art also when ssh'ing to a host using IP only.
     spotted by naddy@, ok and help djm@ dtucker@
   - otto@cvs.openbsd.org 2008/06/12 00:13:13
     [key.c]
     use an odd number of rows and columns and a separate start marker, looks
     better; ok grunk@
   - djm@cvs.openbsd.org 2008/06/12 03:40:52
     [clientloop.h mux.c channels.c clientloop.c channels.h]
     Enable ~ escapes for multiplex slave sessions; give each channel
     its own escape state and hook the escape filters up to muxed
     channels. bz #1331
     Mux slaves do not currently support the ~^Z and ~& escapes.
     NB. this change cranks the mux protocol version, so a new ssh
     mux client will not be able to connect to a running old ssh
     mux master.
     ok dtucker@
   - djm@cvs.openbsd.org 2008/06/12 04:06:00
     [clientloop.h ssh.c clientloop.c]
     maintain an ordered queue of outstanding global requests that we
     expect replies to, similar to the per-channel confirmation queue.
     Use this queue to verify success or failure for remote forward
     establishment in a race free way.
     ok dtucker@
   - djm@cvs.openbsd.org 2008/06/12 04:17:47
     [clientloop.c]
     thall shalt not code past the eightieth column
   - djm@cvs.openbsd.org 2008/06/12 04:24:06
     [ssh.c]
     thal shalt not code past the eightieth column
   - djm@cvs.openbsd.org 2008/06/12 05:15:41
     [PROTOCOL]
     document tun@openssh.com forwarding method
   - djm@cvs.openbsd.org 2008/06/12 05:32:30
     [mux.c]
     some more TODO for me
   - grunk@cvs.openbsd.org 2008/06/12 05:42:46
     [key.c]
     supply the key type (rsa1, rsa, dsa) as a caption in the frame of the
     random art.  while there, stress the fact that the field base should at
     least be 8 characters for the pictures to make sense.
     comment and ok djm@
   - grunk@cvs.openbsd.org 2008/06/12 06:32:59
     [key.c]
     We already mark the start of the worm, now also mark the end of the worm
     in our random art drawings.
     ok djm@
   - djm@cvs.openbsd.org 2008/06/12 15:19:17
     [clientloop.h channels.h clientloop.c channels.c mux.c]
     The multiplexing escape char handler commit last night introduced a
     small memory leak per session; plug it.
   - dtucker@cvs.openbsd.org 2008/06/12 16:35:31
     [ssh_config.5 ssh.c]
     keyword expansion for localcommand.  ok djm@
   - jmc@cvs.openbsd.org 2008/06/12 19:10:09
     [ssh_config.5 ssh-keygen.1]
     tweak the ascii art text; ok grunk
   - dtucker@cvs.openbsd.org 2008/06/12 20:38:28
     [sshd.c sshconnect.c packet.h misc.c misc.h packet.c]
     Make keepalive timeouts apply while waiting for a packet, particularly
     during key renegotiation (bz #1363).  With djm and Matt Day, ok djm@
   - djm@cvs.openbsd.org 2008/06/12 20:47:04
     [sftp-client.c]
     print extension revisions for extensions that we understand
   - djm@cvs.openbsd.org 2008/06/12 21:06:25
     [clientloop.c]
     I was coalescing expected global request confirmation replies at
     the wrong end of the queue - fix; prompted by markus@
   - grunk@cvs.openbsd.org 2008/06/12 21:14:46
     [ssh-keygen.c]
     make ssh-keygen -lf show the key type just as ssh-add -l would do it
     ok djm@ markus@
   - grunk@cvs.openbsd.org 2008/06/12 22:03:36
     [key.c]
     add my copyright, ok djm@
   - ian@cvs.openbsd.org 2008/06/12 23:24:58
     [sshconnect.c]
     tweak wording in message, ok deraadt@ jmc@
   - dtucker@cvs.openbsd.org 2008/06/13 00:12:02
     [sftp.h log.h]
     replace __dead with __attribute__((noreturn)), makes things
     a little easier to port.  Also, add it to sigdie().  ok djm@
   - djm@cvs.openbsd.org 2008/06/13 00:16:49
     [mux.c]
     fall back to creating a new TCP connection on most multiplexing errors
     (socket connect fail, invalid version, refused permittion, corrupted
     messages, etc.); bz #1329 ok dtucker@
   - dtucker@cvs.openbsd.org 2008/06/13 00:47:53
     [mux.c]
     upcast size_t to u_long to match format arg; ok djm@
   - dtucker@cvs.openbsd.org 2008/06/13 00:51:47
     [mac.c]
     upcast another size_t to u_long to match format
   - dtucker@cvs.openbsd.org 2008/06/13 01:38:23
     [misc.c]
     upcast uid to long with matching %ld, prevents warnings in portable
   - djm@cvs.openbsd.org 2008/06/13 04:40:22
     [auth2-pubkey.c auth-rhosts.c]
     refuse to read ~/.shosts or ~/.ssh/authorized_keys that are not
     regular files; report from Solar Designer via Colin Watson in bz#1471
     ok dtucker@ deraadt
  - (dtucker) [clientloop.c serverloop.c]  channel_register_filter now
    takes 2 more args.  with djm@
  - (dtucker) [defines.h] Bug #1112: __dead is, well dead. Based on a patch
    from Todd Vierling.
  - (dtucker) [auth-sia.c] Bug #1241: support password expiry on Tru64 SIA
    systems.  Patch from R. Scott Bailey.
  - (dtucker) [umac.c] STORE_UINT32_REVERSED and endian_convert are never used
    on big endian machines, so ifdef them for little-endian only to prevent
    unused function warnings on big-endians.
  - (dtucker) [openbsd-compat/setenv.c] Make offsets size_t to prevent
    compiler warnings on some platforms.  Based on a discussion with otto@

20080611
 - (djm) [channels.c configure.ac]
   Do not set SO_REUSEADDR on wildcard X11 listeners (X11UseLocalhost=no)
   bz#1464; ok dtucker 

20080610
 - (dtucker) OpenBSD CVS Sync
   - djm@cvs.openbsd.org 2008/06/10 03:57:27
     [servconf.c match.h sshd_config.5]
     support CIDR address matching in sshd_config "Match address" blocks, with
     full support for negation and fall-back to classic wildcard matching.
     For example:
     Match address 192.0.2.0/24,3ffe:ffff::/32,!10.*
         PasswordAuthentication yes
     addrmatch.c code mostly lifted from flowd's addr.c
     feedback and ok dtucker@
   - djm@cvs.openbsd.org 2008/06/10 04:17:46
     [sshd_config.5]
     better reference for pattern-list
   - dtucker@cvs.openbsd.org 2008/06/10 04:50:25
     [sshd.c channels.h channels.c log.c servconf.c log.h servconf.h sshd.8]
     Add extended test mode (-T) and connection parameters for test mode (-C).
     -T causes sshd to write its effective configuration to stdout and exit.
     -C causes any relevant Match rules to be applied before output.  The
     combination allows tesing of the parser and config files.  ok deraadt djm
   - jmc@cvs.openbsd.org 2008/06/10 07:12:00
     [sshd_config.5]
     tweak previous;
   - jmc@cvs.openbsd.org 2008/06/10 08:17:40
     [sshd.8 sshd.c]
     - update usage()
     - fix SYNOPSIS, and sort options
     - some minor additional fixes
   - dtucker@cvs.openbsd.org 2008/06/09 18:06:32
     [regress/test-exec.sh]
     Don't generate putty keys if we're not going to use them.  ok djm
   - dtucker@cvs.openbsd.org 2008/06/10 05:23:32
     [regress/addrmatch.sh regress/Makefile]
     Regress test for Match CIDR rules.  ok djm@
   - dtucker@cvs.openbsd.org 2008/06/10 15:21:41
     [test-exec.sh]
     Use a more portable construct for checking if we're running a putty test
   - dtucker@cvs.openbsd.org 2008/06/10 15:28:49
     [test-exec.sh]
     Add quotes
   - dtucker@cvs.openbsd.org 2008/06/10 18:21:24
     [ssh_config.5]
     clarify that Host patterns are space-separated.  ok deraadt
   - djm@cvs.openbsd.org 2008/06/10 22:15:23
     [PROTOCOL ssh.c serverloop.c]
     Add a no-more-sessions@openssh.com global request extension that the
     client sends when it knows that it will never request another session
     (i.e. when session multiplexing is disabled). This allows a server to
     disallow further session requests and terminate the session.
     Why would a non-multiplexing client ever issue additional session
     requests? It could have been attacked with something like SSH'jack:
     http://www.storm.net.nz/projects/7
     feedback & ok markus
   - djm@cvs.openbsd.org 2008/06/10 23:06:19
     [auth-options.c match.c servconf.c addrmatch.c sshd.8]
     support CIDR address matching in .ssh/authorized_keys from="..." stanzas
     ok and extensive testing dtucker@
   - dtucker@cvs.openbsd.org 2008/06/10 23:21:34
     [bufaux.c]
     Use '\0' for a nul byte rather than unadorned 0.  ok djm@
   - dtucker@cvs.openbsd.org 2008/06/10 23:13:43
     [Makefile regress/key-options.sh]
     Add regress test for key options.  ok djm@
 - (dtucker) [openbsd-compat/fake-rfc2553.h] Add sin6_scope_id to sockaddr_in6
   since the new CIDR code in addmatch.c references it.
 - (dtucker) [Makefile.in configure.ac regress/addrmatch.sh] Skip IPv6
   specific tests on platforms that don't do IPv6.
 - (dtucker) [Makefile.in] Define TEST_SSH_IPV6 in make's arguments as well
   as environment.
 - (dtucker) [Makefile.in] Move addrmatch.o to libssh.a where it's needed now.

20080609
 - (dtucker) OpenBSD CVS Sync
   - dtucker@cvs.openbsd.org 2008/06/08 17:04:41
     [sftp-server.c]
     Add case for ENOSYS in errno_to_portable; ok deraadt
   - dtucker@cvs.openbsd.org 2008/06/08 20:15:29
     [sftp.c sftp-client.c sftp-client.h]
     Have the sftp client store the statvfs replies in wire format,
     which prevents problems when the server's native sizes exceed the
     client's.
     Also extends the sizes of the remaining 32bit wire format to 64bit,
     they're specified as unsigned long in the standard.
   - dtucker@cvs.openbsd.org 2008/06/09 13:02:39
     [sftp-server.c]
     Extend 32bit -> 64bit values for statvfs extension missed in previous
     commit.
   - dtucker@cvs.openbsd.org 2008/06/09 13:38:46
     [PROTOCOL]
     Use a $OpenBSD tag so our scripts will sync changes.

20080608
 - (dtucker) [configure.ac defines.h sftp-client.c sftp-server.c sftp.c
   openbsd-compat/Makefile.in openbsd-compat/openbsd-compat.h
   openbsd-compat/bsd-statvfs.{c,h}] Add a null implementation of statvfs and
   fstatvfs and remove #defines around statvfs code.  ok djm@
 - (dtucker) [configure.ac defines.h sftp-client.c M sftp-server.c] Add a
   macro to convert fsid to unsigned long for platforms where fsid is a
   2-member array.

20080607
 - (dtucker) [mux.c] Include paths.h inside ifdef HAVE_PATHS_H.
 - (dtucker) [configure.ac defines.h sftp-client.c sftp-server.c sftp.c]
   Do not enable statvfs extensions on platforms that do not have statvfs.
 - (dtucker) OpenBSD CVS Sync
   - djm@cvs.openbsd.org 2008/05/19 06:14:02
     [packet.c] unbreak protocol keepalive timeouts bz#1465; ok dtucker@
   - djm@cvs.openbsd.org 2008/05/19 15:45:07
     [sshtty.c ttymodes.c sshpty.h]
     Fix sending tty modes when stdin is not a tty (bz#1199). Previously
     we would send the modes corresponding to a zeroed struct termios,
     whereas we should have been sending an empty list of modes.
     Based on patch from daniel.ritz AT alcatel.ch; ok dtucker@ markus@
   - djm@cvs.openbsd.org 2008/05/19 15:46:31
     [ssh-keygen.c]
     support -l (print fingerprint) in combination with -F (find host) to
     search for a host in ~/.ssh/known_hosts and display its fingerprint;
     ok markus@
   - djm@cvs.openbsd.org 2008/05/19 20:53:52
     [clientloop.c]
     unbreak tree by committing this bit that I missed from:
     Fix sending tty modes when stdin is not a tty (bz#1199). Previously
     we would send the modes corresponding to a zeroed struct termios,
     whereas we should have been sending an empty list of modes.
     Based on patch from daniel.ritz AT alcatel.ch; ok dtucker@ markus@ 

20080604
 - (djm) [openbsd-compat/bsd-arc4random.c] Fix math bug that caused bias
   in arc4random_uniform with upper_bound in (2^30,2*31). Note that 
   OpenSSH did not make requests with upper bounds in this range.

20080519
 - (djm) [configure.ac mux.c sftp.c openbsd-compat/Makefile.in]
   [openbsd-compat/fmt_scaled.c openbsd-compat/openbsd-compat.h]
   Fix compilation on Linux, including pulling in fmt_scaled(3)
   implementation from OpenBSD's libutil.

20080518
 - (djm) OpenBSD CVS Sync
   - djm@cvs.openbsd.org 2008/04/04 05:14:38
     [sshd_config.5]
     ChrootDirectory is supported in Match blocks (in fact, it is most useful
     there). Spotted by Minstrel AT minstrel.org.uk
   - djm@cvs.openbsd.org 2008/04/04 06:44:26
     [sshd_config.5]
     oops, some unrelated stuff crept into that commit - backout.
     spotted by jmc@
   - djm@cvs.openbsd.org 2008/04/05 02:46:02
     [sshd_config.5]
     HostbasedAuthentication is supported under Match too
 - (djm) [openbsd-compat/bsd-arc4random.c openbsd-compat/openbsd-compat.c]
     [configure.ac] Implement arc4random_buf(), import implementation of
     arc4random_uniform() from OpenBSD
 - (djm) [openbsd-compat/bsd-arc4random.c] Warning fixes
 - (djm) [openbsd-compat/port-tun.c] needs sys/queue.h
 - (djm) OpenBSD CVS Sync
   - djm@cvs.openbsd.org 2008/04/13 00:22:17
     [dh.c sshd.c]
     Use arc4random_buf() when requesting more than a single word of output
     Use arc4random_uniform() when the desired random number upper bound
     is not a power of two
     ok deraadt@ millert@
   - djm@cvs.openbsd.org 2008/04/18 12:32:11
     [sftp-client.c sftp-client.h sftp-server.c sftp.1 sftp.c sftp.h]
     introduce sftp extension methods statvfs@openssh.com and
     fstatvfs@openssh.com that implement statvfs(2)-like operations,
     based on a patch from miklos AT szeredi.hu (bz#1399)
     also add a "df" command to the sftp client that uses the
     statvfs@openssh.com to produce a df(1)-like display of filesystem
     space and inode utilisation
     ok markus@
   - jmc@cvs.openbsd.org 2008/04/18 17:15:47
     [sftp.1]
     macro fixage;
   - djm@cvs.openbsd.org 2008/04/18 22:01:33
     [session.c]
     remove unneccessary parentheses
   - otto@cvs.openbsd.org 2008/04/29 11:20:31
     [monitor_mm.h]
     garbage collect two unused fields in struct mm_master; ok markus@
   - djm@cvs.openbsd.org 2008/04/30 10:14:03
     [ssh-keyscan.1 ssh-keyscan.c]
     default to rsa (protocol 2) keys, instead of rsa1 keys; spotted by
     larsnooden AT openoffice.org
   - pyr@cvs.openbsd.org 2008/05/07 05:49:37
     [servconf.c servconf.h session.c sshd_config.5]
     Enable the AllowAgentForwarding option in sshd_config (global and match
     context), to specify if agents should be permitted on the server.
     As the man page states:
     ``Note that disabling Agent forwarding does not improve security
     unless users are also denied shell access, as they can always install
     their own forwarders.''
     ok djm@, ok and a mild frown markus@
   - pyr@cvs.openbsd.org 2008/05/07 06:43:35
     [sshd_config]
     push the sshd_config bits in, spotted by ajacoutot@
   - jmc@cvs.openbsd.org 2008/05/07 08:00:14
     [sshd_config.5]
     sort;
   - markus@cvs.openbsd.org 2008/05/08 06:59:01
     [bufaux.c buffer.h channels.c packet.c packet.h]
     avoid extra malloc/copy/free when receiving data over the net;
     ~10% speedup for localhost-scp; ok djm@
   - djm@cvs.openbsd.org 2008/05/08 12:02:23
     [auth-options.c auth1.c channels.c channels.h clientloop.c gss-serv.c]
     [monitor.c monitor_wrap.c nchan.c servconf.c serverloop.c session.c]
     [ssh.c sshd.c]
     Implement a channel success/failure status confirmation callback
     mechanism. Each channel maintains a queue of callbacks, which will
     be drained in order (RFC4253 guarantees confirm messages are not
     reordered within an channel).
     Also includes a abandonment callback to clean up if a channel is
     closed without sending confirmation messages. This probably
     shouldn't happen in compliant implementations, but it could be
     abused to leak memory.
     ok markus@ (as part of a larger diff)
   - djm@cvs.openbsd.org 2008/05/08 12:21:16
     [monitor.c monitor_wrap.c session.h servconf.c servconf.h session.c]
     [sshd_config sshd_config.5]
     Make the maximum number of sessions run-time controllable via
     a sshd_config MaxSessions knob. This is useful for disabling
     login/shell/subsystem access while leaving port-forwarding working
     (MaxSessions 0), disabling connection multiplexing (MaxSessions 1) or
     simply increasing the number of allows multiplexed sessions.
     Because some bozos are sure to configure MaxSessions in excess of the
     number of available file descriptors in sshd (which, at peak, might be
     as many as 9*MaxSessions), audit sshd to ensure that it doesn't leak fds
     on error paths, and make it fail gracefully on out-of-fd conditions -
     sending channel errors instead of than exiting with fatal().
     bz#1090; MaxSessions config bits and manpage from junyer AT gmail.com
     ok markus@
   - djm@cvs.openbsd.org 2008/05/08 13:06:11
     [clientloop.c clientloop.h ssh.c]
     Use new channel status confirmation callback system to properly deal
     with "important" channel requests that fail, in particular command exec,
     shell and subsystem requests. Previously we would optimistically assume
     that the requests would always succeed, which could cause hangs if they
     did not (e.g. when the server runs out of fds) or were unimplemented by
     the server (bz #1384)
     Also, properly report failing multiplex channel requests via the mux
     client stderr (subject to LogLevel in the mux master) - better than
     silently failing.
     most bits ok markus@ (as part of a larger diff)
   - djm@cvs.openbsd.org 2008/05/09 04:55:56
     [channels.c channels.h clientloop.c serverloop.c]
     Try additional addresses when connecting to a port forward destination
     whose DNS name resolves to more than one address. The previous behaviour
     was to try the first address and give up.
     Reported by stig AT venaas.com in bz#343
     great feedback and ok markus@
   - djm@cvs.openbsd.org 2008/05/09 14:18:44
     [clientloop.c clientloop.h ssh.c mux.c]
     tidy up session multiplexing code, moving it into its own file and
     making the function names more consistent - making ssh.c and
     clientloop.c a fair bit more readable.
     ok markus@
   - djm@cvs.openbsd.org 2008/05/09 14:26:08
     [ssh.c]
     dingo stole my diff hunk
   - markus@cvs.openbsd.org 2008/05/09 16:16:06
     [session.c]
     re-add the USE_PIPES code and enable it.
     without pipes shutdown-read from the sshd does not trigger
     a SIGPIPE when the forked program does a write.
     ok djm@
     (Id sync only, USE_PIPES never left portable OpenSSH)
   - markus@cvs.openbsd.org 2008/05/09 16:17:51
     [channels.c]
     error-fd race: don't enable the error fd in the select bitmask
     for channels with both in- and output closed, since the channel
     will go away before we call select();
     report, lots of debugging help and ok djm@
   - markus@cvs.openbsd.org 2008/05/09 16:21:13
     [channels.h clientloop.c nchan.c serverloop.c]
     unbreak
        ssh -2 localhost od /bin/ls | true
     ignoring SIGPIPE by adding a new channel message (EOW) that signals
     the peer that we're not interested in any data it might send.
     fixes bz #85; discussion, debugging and ok djm@
   - pvalchev@cvs.openbsd.org 2008/05/12 20:52:20
     [umac.c]
     Ensure nh_result lies on a 64-bit boundary (fixes warnings observed
     on Itanium on Linux); from Dale Talcott (bug #1462); ok djm@
   - djm@cvs.openbsd.org 2008/05/15 23:52:24
     [nchan2.ms]
     document eow message in ssh protocol 2 channel state machine;
     feedback and ok markus@
   - djm@cvs.openbsd.org 2008/05/18 21:29:05
     [sftp-server.c]
     comment extension announcement
   - djm@cvs.openbsd.org 2008/05/16 08:30:42
     [PROTOCOL]
     document our protocol extensions and deviations; ok markus@
   - djm@cvs.openbsd.org 2008/05/17 01:31:56
     [PROTOCOL]
     grammar and correctness fixes from stevesk@

20080403
 - (djm) [openbsd-compat/bsd-poll.c] Include stdlib.h to avoid compile-
   time warnings on LynxOS. Patch from ops AT iki.fi
 - (djm) Force string arguments to replacement setproctitle() though
   strnvis first. Ok dtucker@

20080403
 - (djm) OpenBSD CVS sync:
   - markus@cvs.openbsd.org 2008/04/02 15:36:51
     [channels.c]
     avoid possible hijacking of x11-forwarded connections (back out 1.183)
     CVE-2008-1483; ok djm@
   - jmc@cvs.openbsd.org 2008/03/27 22:37:57
     [sshd.8]
     remove trailing whitespace;
   - djm@cvs.openbsd.org 2008/04/03 09:50:14
     [version.h]
     openssh-5.0
 - (djm) [contrib/caldera/openssh.spec contrib/redhat/openssh.spec]
   [contrib/suse/openssh.spec] Crank version numbers in RPM spec files
 - (djm) [README] Update link to release notes
 - (djm) Release 5.0p1