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|
#!/bin/sh
action=$1
version=$2
# Source debconf library.
. /usr/share/debconf/confmodule
db_version 2.0
get_config_option() {
option="$1"
[ -f /etc/ssh/sshd_config ] || return
# TODO: actually only one '=' allowed after option
perl -ne 'print if s/^[[:space:]]*'"$option"'[[:space:]=]+//i' \
/etc/ssh/sshd_config 2>/dev/null
}
if [ -e /etc/init.d/ssh ] && ! grep -q pidfile /etc/init.d/ssh
then
db_fset ssh/use_old_init_script seen false
db_input medium ssh/use_old_init_script || true
db_go
db_get ssh/use_old_init_script
[ "$RET" = "false" ] && exit 0
else
db_set ssh/use_old_init_script true
db_fset ssh/use_old_init_script seen true
fi
if [ -z "$version" ] && [ ! -e /etc/ssh/sshd_config ]
then
db_input medium ssh/protocol2_only || true
fi
if [ -e /etc/ssh/sshd_config ]
then
if dpkg --compare-versions "$version" lt-nl 1:1.3 ;
then db_input medium ssh/new_config || true
db_go
db_get ssh/new_config
if [ "$RET" = "true" ];
then db_input medium ssh/protocol2_only ||true
fi
fi
# An empty version means we're upgrading from before the package split,
# so check.
if dpkg --compare-versions "$version" lt 1:3.8.1p1-11
then
passwordauth="$(get_config_option PasswordAuthentication)"
crauth="$(get_config_option ChallengeResponseAuthentication)"
if [ "$passwordauth" = no ] && \
([ -z "$crauth" ] || [ "$crauth" = yes ])
then
db_input critical ssh/disable_cr_auth || true
fi
fi
fi
if [ -x /usr/sbin/in.telnetd ] && grep -q "^telnet\b" /etc/inetd.conf
then
if ! /usr/sbin/in.telnetd -? 2>&1 | grep -q ssl 2>/dev/null
then
db_input low ssh/insecure_telnetd || true
fi
fi
key=/etc/ssh/ssh_host_key
export key
if [ -n "$version" ] && [ -f $key ] && [ ! -x /usr/bin/ssh-keygen ] &&
dpkg --compare-versions "$version" lt 1.2.28
then
# make sure that keys get updated to get rid of IDEA; preinst
# actually does the work, but if the old ssh-keygen is not found,
# it can't do that -- thus, we tell the user that he must create
# a new host key.
echo -en '\0\0' | 3<&0 sh -c \
'dd if=$key bs=1 skip=32 count=2 2>/dev/null | cmp -s - /dev/fd/3' || {
# this means that bytes 32&33 of the key were not both zero, in which
# case the key is encrypted, which we need to fix
db_input high ssh/encrypted_host_key_but_no_keygen || true
}
fi
db_input low ssh/forward_warning || true
db_go
exit 0
|
