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$FreeBSD$ tags and man page dates. Add a post-merge script which reapplies these changes. Run both scripts to normalize the existing code base. As a result, many files which should have had $FreeBSD$ tags but didn't now have them. Partly rewrite the upgrade instructions and remove the now outdated list of tricks.
147 lines
4.3 KiB
Plaintext
147 lines
4.3 KiB
Plaintext
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FreeBSD maintainer's guide to OpenSSH-portable
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==============================================
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00) Make sure your mail spool has plenty of free space. It'll fill up
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pretty fast once you're done with this checklist.
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01) Download the latest OpenSSH-portable tarball and signature from
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OpenBSD (ftp://ftp.openbsd.org/pub/OpenBSD/OpenSSH/portable/).
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02) Verify the signature:
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$ gpg --verify openssh-X.YpZ.tar.gz.asc
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03) Unpack the tarball in a suitable directory:
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$ tar xf openssh-X.YpZ.tar.gz
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04) Copy to the vendor directory:
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$ svn co svn+ssh://svn.freebsd.org/base/vendor-crypto/openssh/dist
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$ rsync --archive --delete openssh-X.YpZ/ dist/
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05) Take care of added / deleted files:
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$ svn rm $(svn stat dist | awk '$1 == "!" { print $2 }')
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$ svn add --no-auto-props $(svn stat dist | awk '$1 == "?" { print $2 }')
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06) Commit:
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$ svn commit -m "Vendor import of OpenSSH X.YpZ." dist
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07) Tag:
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$ svn copy -m "Tag OpenSSH X.YpZ." \
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svn+ssh://svn.freebsd.org/base/vendor-crypto/openssh/dist \
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svn+ssh://svn.freebsd.org/base/vendor-crypto/openssh/X.YpZ
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08) Check out head and run the pre-merge script:
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$ svn co svn+ssh://svn.freebsd.org/base/head
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$ cd head/crypto/openssh
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$ sh freebsd-pre-merge.sh
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09) Merge from the vendor branch:
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$ svn merge -cNNNNNN \^/vendor-crypto/openssh/dist .
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0A) Resolve conflicts. Remember to bump the version addendum in
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version.h, and update the default value in ssh{,d}_config and
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ssh{,d}_config.5.
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0B) Diff against the vendor branch:
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$ svn diff \^/vendor-crypto/openssh/dist .
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Files that have modifications relative to the vendor code, and
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only those files, must have the svn:keywords property set to
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FreeBSD=%H and be listed in the 'keywords' file created by the
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pre-merge script.
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0C) Run the post-merge script:
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$ sh freebsd-post-merge.sh
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0D) Run the configure script:
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$ sh freebsd-configure.sh
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0E) Check config.h very carefully.
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0F) If source files have been added or removed, update the appropriate
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makefiles to reflect changes in the vendor's Makefile.in.
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10) Build libssh:
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$ cd ../../secure/lib/libssh && make obj && make depend && make
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11) Follow the instructions in ssh_namespace.h to get a list of new
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symbols, and them to ssh_namespace.h. Keep it sorted!
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12) Build and install world, reboot, test. Pay particular attention
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to pam_ssh(8), which gropes inside libssh and will break if
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something significant changes or if ssh_namespace.h is out of
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whack.
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13) Commit, and hunker down for the inevitable storm of complaints.
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An overview of FreeBSD changes to OpenSSH-portable
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==================================================
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XXX This section is out of date
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0) VersionAddendum
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The SSH protocol allows for a human-readable version string of up
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to 40 characters to be appended to the protocol version string.
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FreeBSD takes advantage of this to include a date indicating the
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"patch level", so people can easily determine whether their system
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is vulnerable when an OpenSSH advisory goes out. Some people,
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however, dislike advertising their patch level in the protocol
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handshake, so we've added a VersionAddendum configuration variable
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to allow them to change or disable it.
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1) Modified server-side defaults
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We've modified some configuration defaults in sshd:
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- PasswordAuthentication defaults to "no".
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- LoginGraceTime defaults to 120 seconds instead of 600.
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- PermitRootLogin defaults to "no".
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- X11Forwarding defaults to "yes" (it's a threat to the client,
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not to the server.)
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2) Modified client-side defaults
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We've modified some configuration defaults in ssh:
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- CheckHostIP defaults to "no".
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3) Canonic host names
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We've added code to ssh.c to canonicize the target host name after
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reading options but before trying to connect. This eliminates the
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usual problem with duplicate known_hosts entries.
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4) setusercontext() environment
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Our setusercontext(3) can set environment variables, which we must
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take care to transfer to the child's environment.
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This port was brought to you by (in no particular order) DARPA, NAI
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Labs, ThinkSec, Nescafé, the Aberlour Glenlivet Distillery Co.,
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Suzanne Vega, and a Sanford's #69 Deluxe Marker.
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-- des@FreeBSD.org
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$FreeBSD$
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