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|
#!/bin/sh -e
action="$1"
oldversion="$2"
. /usr/share/debconf/confmodule
db_version 2.0
umask 022
if [ "$action" != configure ]
then
exit 0
fi
fix_rsh_diversion() {
# get rid of mistaken rsh diversion (circa 1.2.27-1)
if [ -L /usr/bin/rsh ] &&
dpkg-divert --list '/usr/bin/rsh.real/rsh' | grep -q ' ssh$' ; then
for cmd in rlogin rsh rcp ; do
[ -L /usr/bin/$cmd ] && rm /usr/bin/$cmd
dpkg-divert --package ssh --remove --rename \
--divert /usr/bin/rsh.real/$cmd /usr/bin/$cmd
[ -L /usr/man/man1/$cmd.1.gz ] && rm /usr/man/man1/$$cmd.1.gz
dpkg-divert --package ssh --remove --rename \
--divert /usr/man/man1/$cmd.real.1.gz /usr/man/man1/$cmd.1.gz
done
rmdir /usr/bin/rsh.real
fi
}
create_alternatives() {
# Create alternatives for the various r* tools.
# Make sure we don't change existing alternatives that a user might have
# changed, but clean up after some old alternatives that mistakenly pointed
# rlogin and rcp to ssh.
update-alternatives --quiet --remove rlogin /usr/bin/ssh
update-alternatives --quiet --remove rcp /usr/bin/ssh
for cmd in rsh rlogin rcp; do
scmd="s${cmd#r}"
if ! update-alternatives --display "$cmd" 2>/dev/null | \
grep -q "$scmd"; then
update-alternatives --quiet --install "/usr/bin/$cmd" "$cmd" "/usr/bin/$scmd" 20 \
--slave "/usr/share/man/man1/$cmd.1.gz" "$cmd.1.gz" "/usr/share/man/man1/$scmd.1.gz"
fi
done
}
set_ssh_permissions() {
if dpkg --compare-versions "$oldversion" lt-nl 1:3.4p1-1 ; then
if [ -x /usr/sbin/dpkg-statoverride ] ; then
if dpkg-statoverride --list /usr/bin/ssh >/dev/null; then
dpkg-statoverride --remove /usr/bin/ssh >/dev/null
fi
fi
fi
# libexecdir changed, so migrate old statoverrides.
if [ -x /usr/sbin/dpkg-statoverride ] &&
override="$(dpkg-statoverride --list /usr/lib/ssh-keysign)"; then
override_user="${override%% *}"
override="${override#* }"
override_group="${override%% *}"
override="${override#* }"
override_mode="${override%% *}"
if dpkg-statoverride --update --add \
"$override_user" "$override_group" "$override_mode" \
/usr/lib/openssh/ssh-keysign; then
dpkg-statoverride --remove /usr/lib/ssh-keysign || true
fi
fi
}
fix_ssh_group() {
# Try to remove non-system group mistakenly created by 1:3.5p1-1.
# set_ssh_agent_permissions() below will re-create it properly.
if getent group ssh >/dev/null; then
delgroup --quiet ssh || true
fi
}
set_ssh_agent_permissions() {
if ! getent group ssh >/dev/null; then
addgroup --system --quiet ssh
fi
if ! [ -x /usr/sbin/dpkg-statoverride ] || \
! dpkg-statoverride --list /usr/bin/ssh-agent >/dev/null ; then
chgrp ssh /usr/bin/ssh-agent
chmod 2755 /usr/bin/ssh-agent
fi
}
commit_transfer_conffile () {
CONFFILE="$1"
if [ -e "$CONFFILE.moved-by-preinst" ]; then
rm -f "$CONFFILE.moved-by-preinst"
fi
}
fix_rsh_diversion
create_alternatives
set_ssh_permissions
if [ "$2" = "1:3.5p1-1" ]; then
fix_ssh_group
fi
set_ssh_agent_permissions
commit_transfer_conffile /etc/ssh/moduli
commit_transfer_conffile /etc/ssh/ssh_config
exit 0
|
