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Mail Archives: cygwin/2015/01/08/08:04:57

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X-HELO: calimero.vinschen.de
Date: Thu, 8 Jan 2015 14:04:31 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: SSHd configuration problems (System error 1376)
Message-ID: <20150108130431.GI4190@calimero.vinschen.de>
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--72k7VsmfIboquFwl
Content-Type: multipart/mixed; boundary="hABqaeELJqnDDeDE"
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--hABqaeELJqnDDeDE
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On Jan  8 06:09, Andrey Repin wrote:
> Greetings, Corinna Vinschen!
>=20
> Speaking of ssh-host-config, how to specify domain user to run SSHD, while
> setting up the service through script? (Yes, I'm experimenting with snaps=
hot.)

The ssh-host-config script is supposed to work for simple standalone
environments, not for AD environments.  If you want to use a domain
account, the account must already exist, see

  https://cygwin.com/faq/faq.html#faq.using.sshd-in-domain

The FAQ entry mentions adding the account to /etc/passwd, but that
obviously is not required anymore with 1.7.34 (FAQ needs change).

Also, the current released ssh-host-config script is not 1.7.34-ready.
I sent a few patches upstream already and I was planning to update
the openssh package when I release 1.7.34.

For your convenience, I attached the current upstream ssh-host-config
script.


Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

--hABqaeELJqnDDeDE
Content-Type: text/plain; charset=utf-8
Content-Disposition: attachment; filename=ssh-host-config
Content-Transfer-Encoding: quoted-printable

#!/bin/bash
#
# ssh-host-config, Copyright 2000-2014 Red Hat Inc.
#
# This file is part of the Cygwin port of OpenSSH.
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS=
=20=20
# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.=20=
=20=20
# IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,=20=
=20=20
# DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR=20=
=20=20=20
# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR=20=
=20=20=20
# THE USE OR OTHER DEALINGS IN THE SOFTWARE.=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20

# =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
# Initialization
# =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

CSIH_SCRIPT=3D/usr/share/csih/cygwin-service-installation-helper.sh

# List of apps used.  This is checkad for existance in csih_sanity_check
# Don't use *any* transient commands before sourcing the csih helper script,
# otherwise the sanity checks are short-circuited.
declare -a csih_required_commands=3D(
  /usr/bin/basename coreutils
  /usr/bin/cat coreutils
  /usr/bin/chmod coreutils
  /usr/bin/dirname coreutils
  /usr/bin/id coreutils
  /usr/bin/mv coreutils
  /usr/bin/rm coreutils
  /usr/bin/cygpath cygwin
  /usr/bin/mkpasswd cygwin
  /usr/bin/mount cygwin
  /usr/bin/ps cygwin
  /usr/bin/umount cygwin
  /usr/bin/cmp diffutils
  /usr/bin/grep grep
  /usr/bin/awk gawk
  /usr/bin/ssh-keygen openssh
  /usr/sbin/sshd openssh
  /usr/bin/sed sed
)
csih_sanity_check_server=3Dyes
source ${CSIH_SCRIPT}

PROGNAME=3D$(/usr/bin/basename $0)
_tdir=3D$(/usr/bin/dirname $0)
PROGDIR=3D$(cd $_tdir && pwd)

# Subdirectory where the new package is being installed
PREFIX=3D/usr

# Directory where the config files are stored
SYSCONFDIR=3D/etc
LOCALSTATEDIR=3D/var

sshd_config_configured=3Dno
port_number=3D22
service_name=3Dsshd
strictmodes=3Dyes
privsep_used=3Dyes
cygwin_value=3D""
user_account=3D
password_value=3D
opt_force=3Dno

# =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
# Routine: update_services_file
# =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
update_services_file() {
  local _my_etcdir=3D"/ssh-host-config.$$"
  local _win_etcdir
  local _services
  local _spaces
  local _serv_tmp
  local _wservices
  local ret=3D0

  _win_etcdir=3D"${SYSTEMROOT}\\system32\\drivers\\etc"
  _services=3D"${_my_etcdir}/services"
  _spaces=3D"                           #"
  _serv_tmp=3D"${_my_etcdir}/srv.out.$$"

  /usr/bin/mount -o text,posix=3D0,noacl -f "${_win_etcdir}" "${_my_etcdir}"

  # Depends on the above mount
  _wservices=3D`cygpath -w "${_services}"`

  # Add ssh 22/tcp  and ssh 22/udp to services
  if [ `/usr/bin/grep -q 'ssh[[:space:]][[:space:]]*22' "${_services}"; ech=
o $?` -ne 0 ]
  then
    if /usr/bin/awk '{ if ( $2 ~ /^23\/tcp/ ) print "ssh                22/=
tcp'"${_spaces}"'SSH Remote Login Protocol\nssh                22/udp'"${_s=
paces}"'SSH Remote Login Protocol"; print $0; }' < "${_services}" > "${_ser=
v_tmp}"
    then
      if /usr/bin/mv "${_serv_tmp}" "${_services}"
      then
	csih_inform "Added ssh to ${_wservices}"
      else
	csih_warning "Adding ssh to ${_wservices} failed!"
	let ++ret
      fi
      /usr/bin/rm -f "${_serv_tmp}"
    else
      csih_warning "Adding ssh to ${_wservices} failed!"
      let ++ret
    fi
  fi
  /usr/bin/umount "${_my_etcdir}"
  return $ret
} # --- End of update_services_file --- #

# =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
# Routine: sshd_strictmodes
#  MODIFIES: strictmodes
# =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
sshd_strictmodes() {
  if [ "${sshd_config_configured}" !=3D "yes" ]
  then
    echo
    csih_inform "StrictModes is set to 'yes' by default."
    csih_inform "This is the recommended setting, but it requires that the =
POSIX"
    csih_inform "permissions of the user's home directory, the user's .ssh"
    csih_inform "directory, and the user's ssh key files are tight so that"
    csih_inform "only the user has write permissions."
    csih_inform "On the other hand, StrictModes don't work well with defaul=
t"
    csih_inform "Windows permissions of a home directory mounted with the"
    csih_inform "'noacl' option, and they don't work at all if the home"
    csih_inform "directory is on a FAT or FAT32 partition."
    if ! csih_request "Should StrictModes be used?"
    then
      strictmodes=3Dno
    fi
  fi
  return 0
}

# =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
# Routine: sshd_privsep
#  MODIFIES: privsep_used
# =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
sshd_privsep() {
  local ret=3D0

  if [ "${sshd_config_configured}" !=3D "yes" ]
  then
    echo
    csih_inform "Privilege separation is set to 'sandbox' by default since"
    csih_inform "OpenSSH 6.1.  This is unsupported by Cygwin and has to be =
set"
    csih_inform "to 'yes' or 'no'."
    csih_inform "However, using privilege separation requires a non-privile=
ged account"
    csih_inform "called 'sshd'."
    csih_inform "For more info on privilege separation read /usr/share/doc/=
openssh/README.privsep."
    if csih_request "Should privilege separation be used?"
    then
      privsep_used=3Dyes
      if ! csih_create_unprivileged_user sshd
      then
	csih_error_recoverable "Couldn't create user 'sshd'!"
	csih_error_recoverable "Privilege separation set to 'no' again!"
	csih_error_recoverable "Check your ${SYSCONFDIR}/sshd_config file!"
	let ++ret
	privsep_used=3Dno
      fi
    else
      privsep_used=3Dno
    fi
  fi
  return $ret
} # --- End of sshd_privsep --- #

# =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
# Routine: sshd_config_tweak
# =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
sshd_config_tweak() {
  local ret=3D0

  # Modify sshd_config
  csih_inform "Updating ${SYSCONFDIR}/sshd_config file"
  if [ "${port_number}" -ne 22 ]
  then
    /usr/bin/sed -i -e "s/^#\?[[:space:]]*Port[[:space:]].*/Port ${port_num=
ber}/" \
      ${SYSCONFDIR}/sshd_config
    if [ $? -ne 0 ]
    then
      csih_warning "Setting listening port to ${port_number} failed!"
      csih_warning "Check your ${SYSCONFDIR}/sshd_config file!"
      let ++ret
    fi
  fi
  if [ "${strictmodes}" =3D "no" ]
  then
    /usr/bin/sed -i -e "s/^#\?[[:space:]]*StrictModes[[:space:]].*/StrictMo=
des no/" \
      ${SYSCONFDIR}/sshd_config
    if [ $? -ne 0 ]
    then
      csih_warning "Setting StrictModes to 'no' failed!"
      csih_warning "Check your ${SYSCONFDIR}/sshd_config file!"
      let ++ret
    fi
  fi
  if [ "${sshd_config_configured}" !=3D "yes" ]
  then
    /usr/bin/sed -i -e "
      s/^#\?UsePrivilegeSeparation .*/UsePrivilegeSeparation ${privsep_used=
}/" \
      ${SYSCONFDIR}/sshd_config
    if [ $? -ne 0 ]
    then
      csih_warning "Setting privilege separation failed!"
      csih_warning "Check your ${SYSCONFDIR}/sshd_config file!"
      let ++ret
    fi
  fi
  return $ret
} # --- End of sshd_config_tweak --- #

# =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
# Routine: update_inetd_conf
# =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
update_inetd_conf() {
  local _inetcnf=3D"${SYSCONFDIR}/inetd.conf"
  local _inetcnf_tmp=3D"${SYSCONFDIR}/inetd.conf.$$"
  local _inetcnf_dir=3D"${SYSCONFDIR}/inetd.d"
  local _sshd_inetd_conf=3D"${_inetcnf_dir}/sshd-inetd"
  local _sshd_inetd_conf_tmp=3D"${_inetcnf_dir}/sshd-inetd.$$"
  local _with_comment=3D1
  local ret=3D0

  if [ -d "${_inetcnf_dir}" ]
  then
    # we have inetutils-1.5 inetd.d support
    if [ -f "${_inetcnf}" ]
    then
      /usr/bin/grep -q '^[[:space:]]*ssh' "${_inetcnf}" && _with_comment=3D0

      # check for sshd OR ssh in top-level inetd.conf file, and remove
      # will be replaced by a file in inetd.d/
      if [ $(/usr/bin/grep -q '^[# \t]*ssh' "${_inetcnf}"; echo $?) -eq 0 ]
      then
	/usr/bin/grep -v '^[# \t]*ssh' "${_inetcnf}" >> "${_inetcnf_tmp}"
	if [ -f "${_inetcnf_tmp}" ]
	then
	  if /usr/bin/mv "${_inetcnf_tmp}" "${_inetcnf}"
	  then
  	    csih_inform "Removed ssh[d] from ${_inetcnf}"
	  else
  	    csih_warning "Removing ssh[d] from ${_inetcnf} failed!"
	    let ++ret
	  fi
	  /usr/bin/rm -f "${_inetcnf_tmp}"
	else
	  csih_warning "Removing ssh[d] from ${_inetcnf} failed!"
	  let ++ret
	fi
      fi
    fi

    csih_install_config "${_sshd_inetd_conf}"   "${SYSCONFDIR}/defaults"
    if /usr/bin/cmp "${SYSCONFDIR}/defaults${_sshd_inetd_conf}" "${_sshd_in=
etd_conf}" >/dev/null 2>&1
    then
      if [ "${_with_comment}" -eq 0 ]
      then
	/usr/bin/sed -e 's/@COMMENT@[[:space:]]*//' < "${_sshd_inetd_conf}" > "${_=
sshd_inetd_conf_tmp}"
      else
	/usr/bin/sed -e 's/@COMMENT@[[:space:]]*/# /' < "${_sshd_inetd_conf}" > "$=
{_sshd_inetd_conf_tmp}"
      fi
      if /usr/bin/mv "${_sshd_inetd_conf_tmp}" "${_sshd_inetd_conf}"
      then
	csih_inform "Updated ${_sshd_inetd_conf}"
      else
	csih_warning "Updating ${_sshd_inetd_conf} failed!"
	let ++ret
      fi
    fi

  elif [ -f "${_inetcnf}" ]
  then
    /usr/bin/grep -q '^[[:space:]]*sshd' "${_inetcnf}" && _with_comment=3D0

    # check for sshd in top-level inetd.conf file, and remove
    # will be replaced by a file in inetd.d/
    if [ `/usr/bin/grep -q '^#\?[[:space:]]*sshd' "${_inetcnf}"; echo $?` -=
eq 0 ]
    then
      /usr/bin/grep -v '^#\?[[:space:]]*sshd' "${_inetcnf}" >> "${_inetcnf_=
tmp}"
      if [ -f "${_inetcnf_tmp}" ]
      then
	if /usr/bin/mv "${_inetcnf_tmp}" "${_inetcnf}"
	then
	    csih_inform "Removed sshd from ${_inetcnf}"
	else
	    csih_warning "Removing sshd from ${_inetcnf} failed!"
	    let ++ret
	fi
	/usr/bin/rm -f "${_inetcnf_tmp}"
      else
	csih_warning "Removing sshd from ${_inetcnf} failed!"
	let ++ret
      fi
    fi

    # Add ssh line to inetd.conf
    if [ `/usr/bin/grep -q '^[# \t]*ssh' "${_inetcnf}"; echo $?` -ne 0 ]
    then
      if [ "${_with_comment}" -eq 0 ]
      then
	echo 'ssh  stream  tcp     nowait  root    /usr/sbin/sshd sshd -i' >> "${_=
inetcnf}"
      else
	echo '# ssh  stream  tcp     nowait  root    /usr/sbin/sshd sshd -i' >> "$=
{_inetcnf}"
      fi
      if [ $? -eq 0 ]
      then
	csih_inform "Added ssh to ${_inetcnf}"
      else
	csih_warning "Adding ssh to ${_inetcnf} failed!"
	let ++ret
      fi
    fi
  fi
  return $ret
} # --- End of update_inetd_conf --- #

# =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
# Routine: check_service_files_ownership
#   Checks that the files in /etc and /var belong to the right owner
# =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
check_service_files_ownership() {
  local run_service_as=3D$1
  local ret=3D0

  if [ -z "${run_service_as}" ]
  then
    accnt_name=3D$(/usr/bin/cygrunsrv -VQ sshd |
    		 /usr/bin/sed -ne 's/^Account *: *//gp')
    if [ "${accnt_name}" =3D "LocalSystem" ]
    then
      # Convert "LocalSystem" to "SYSTEM" as is the correct account name
      run_service_as=3D"SYSTEM"
    else
      dom=3D"${accnt_name%%\\*}"
      accnt_name=3D"${accnt_name#*\\}"
      if [ "${dom}" =3D '.' ]
      then
	# Check local account
	run_service_as=3D$(/usr/bin/mkpasswd -l -u "${accnt_name}" |
			 /usr/bin/awk -F: '{print $1;}')
      else
      	# Check domain
	run_service_as=3D$(/usr/bin/mkpasswd -d "${dom}" -u "${accnt_name}" |
			 /usr/bin/awk -F: '{print $1;}')
      fi
    fi
    if [ -z "${run_service_as}" ]
    then
      csih_warning "Couldn't determine name of user running sshd service fr=
om account database!"
      csih_warning "As a result, this script cannot make sure that the file=
s used"
      csih_warning "by the sshd service belong to the user running the serv=
ice."
      return 1
    fi
  fi
  for i in "${SYSCONFDIR}"/ssh_config "${SYSCONFDIR}"/sshd_config "${SYSCON=
FDIR}"/ssh_host_*key "${SYSCONFDIR}"/ssh_host_*key.pub
  do
    if [ -f "$i" ]
    then
      if ! chown "${run_service_as}".544 "$i" >/dev/null 2>&1
      then
	csih_warning "Couldn't change owner of $i!"
	let ++ret
      fi
    fi
  done
  if ! chown "${run_service_as}".544 ${LOCALSTATEDIR}/empty >/dev/null 2>&1
  then
    csih_warning "Couldn't change owner of ${LOCALSTATEDIR}/empty!"
    let ++ret
  fi
  if ! chown "${run_service_as}".544 ${LOCALSTATEDIR}/log/lastlog >/dev/nul=
l 2>&1
  then
    csih_warning "Couldn't change owner of ${LOCALSTATEDIR}/log/lastlog!"
    let ++ret
  fi
  if [ -f ${LOCALSTATEDIR}/log/sshd.log ]
  then
    if ! chown "${run_service_as}".544 ${LOCALSTATEDIR}/log/sshd.log >/dev/=
null 2>&1
    then
      csih_warning "Couldn't change owner of ${LOCALSTATEDIR}/log/sshd.log!"
      let ++ret
    fi
  fi
  if [ $ret -ne 0 ]
  then
    csih_warning "Couldn't change owner of important files to ${run_service=
_as}!"
    csih_warning "This may cause the sshd service to fail!  Please make sur=
e that"
    csih_warning "you have suufficient permissions to change the ownership =
of files"
    csih_warning "and try to run the ssh-host-config script again."
  fi
  return $ret
} # --- End of check_service_files_ownership --- #

# =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
# Routine: install_service
#   Install sshd as a service
# =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
install_service() {
  local run_service_as
  local password
  local ret=3D0

  echo
  if /usr/bin/cygrunsrv -Q ${service_name} >/dev/null 2>&1
  then
    csih_inform "Sshd service is already installed."
    check_service_files_ownership "" || let ret+=3D$?
  else
    echo -e "${_csih_QUERY_STR} Do you want to install sshd as a service?"
    if csih_request "(Say \"no\" if it is already installed as a service)"
    then
      csih_get_cygenv "${cygwin_value}"

      if ( csih_is_nt2003 || [ "$csih_FORCE_PRIVILEGED_USER" =3D "yes" ] )
      then
	csih_inform "On Windows Server 2003, Windows Vista, and above, the"
	csih_inform "SYSTEM account cannot setuid to other users -- a capability"
	csih_inform "sshd requires.  You need to have or to create a privileged"
	csih_inform "account.  This script will help you do so."
	echo

	[ "${opt_force}" =3D "yes" ] && opt_f=3D-f
	[ -n "${user_account}" ] && opt_u=3D"-u ""${user_account}"""
	csih_select_privileged_username ${opt_f} ${opt_u} sshd

	if ! csih_create_privileged_user "${password_value}"
	then
	  csih_error_recoverable "There was a serious problem creating a privilege=
d user."
	  csih_request "Do you want to proceed anyway?" || exit 1
	  let ++ret
	fi
      fi

      # Never returns empty if NT or above
      run_service_as=3D$(csih_service_should_run_as)

      if [ "${run_service_as}" =3D "${csih_PRIVILEGED_USERNAME}" ]
      then
	password=3D"${csih_PRIVILEGED_PASSWORD}"
	if [ -z "${password}" ]
	then
	  csih_get_value "Please enter the password for user '${run_service_as}':"=
 "-s"
	  password=3D"${csih_value}"
	fi
      fi

      # At this point, we either have $run_service_as =3D "system" and
      # $password is empty, or $run_service_as is some privileged user and
      # (hopefully) $password contains the correct password.  So, from here
      # out, we use '-z "${password}"' to discriminate the two cases.

      csih_check_user "${run_service_as}"

      if [ -n "${csih_cygenv}" ]
      then
	cygwin_env=3D( -e "CYGWIN=3D${csih_cygenv}" )
      fi
      if [ -z "${password}" ]
      then
	if /usr/bin/cygrunsrv -I ${service_name} -d "CYGWIN ${service_name}" -p /u=
sr/sbin/sshd \
			      -a "-D" -y tcpip "${cygwin_env[@]}"
	then
	  echo
	  csih_inform "The sshd service has been installed under the LocalSystem"
	  csih_inform "account (also known as SYSTEM). To start the service now, c=
all"
	  csih_inform "\`net start sshd' or \`cygrunsrv -S sshd'.  Otherwise, it"
	  csih_inform "will start automatically after the next reboot."
	fi
      else
	if /usr/bin/cygrunsrv -I ${service_name} -d "CYGWIN ${service_name}" -p /u=
sr/sbin/sshd \
			      -a "-D" -y tcpip "${cygwin_env[@]}" \
			      -u "${run_service_as}" -w "${password}"
	then
	  /usr/bin/editrights -u "${run_service_as}" -a SeServiceLogonRight
	  echo
	  csih_inform "The sshd service has been installed under the '${run_servic=
e_as}'"
	  csih_inform "account.  To start the service now, call \`net start ${serv=
ice_name}' or"
	  csih_inform "\`cygrunsrv -S ${service_name}'.  Otherwise, it will start =
automatically"
	  csih_inform "after the next reboot."
	fi
      fi

      if /usr/bin/cygrunsrv -Q ${service_name} >/dev/null 2>&1
      then
	check_service_files_ownership "${run_service_as}" || let ret+=3D$?
      else
	csih_error_recoverable "Installing sshd as a service failed!"
	let ++ret
      fi
    fi # user allowed us to install as service
  fi # service not yet installed
  return $ret
} # --- End of install_service --- #

# =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
# Main Entry Point
# =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

# Check how the script has been started.  If
#   (1) it has been started by giving the full path and
#       that path is /etc/postinstall, OR
#   (2) Otherwise, if the environment variable
#       SSH_HOST_CONFIG_AUTO_ANSWER_NO is set
# then set auto_answer to "no".  This allows automatic
# creation of the config files in /etc w/o overwriting
# them if they already exist.  In both cases, color
# escape sequences are suppressed, so as to prevent
# cluttering setup's logfiles.
if [ "$PROGDIR" =3D "/etc/postinstall" ]
then
  csih_auto_answer=3D"no"
  csih_disable_color
  opt_force=3Dyes
fi
if [ -n "${SSH_HOST_CONFIG_AUTO_ANSWER_NO}" ]
then
  csih_auto_answer=3D"no"
  csih_disable_color
  opt_force=3Dyes
fi

# =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
# Parse options
# =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
while :
do
  case $# in
  0)
    break
    ;;
  esac

  option=3D$1
  shift

  case "${option}" in
  -d | --debug )
    set -x
    csih_trace_on
    ;;

  -y | --yes )
    csih_auto_answer=3Dyes
    opt_force=3Dyes
    ;;

  -n | --no )
    csih_auto_answer=3Dno
    opt_force=3Dyes
    ;;

  -c | --cygwin )
    cygwin_value=3D"$1"
    shift
    ;;

  -N | --name )
    service_name=3D$1
    shift
    ;;

  -p | --port )
    port_number=3D$1
    shift
    ;;

  -u | --user )
    user_account=3D"$1"
    shift
    ;;
=20=20=20=20
  -w | --pwd )
    password_value=3D"$1"
    shift
    ;;

  --privileged )
    csih_FORCE_PRIVILEGED_USER=3Dyes
    ;;

  *)
    echo "usage: ${progname} [OPTION]..."
    echo
    echo "This script creates an OpenSSH host configuration."
    echo
    echo "Options:"
    echo "  --debug  -d            Enable shell's debug output."
    echo "  --yes    -y            Answer all questions with \"yes\" automa=
tically."
    echo "  --no     -n            Answer all questions with \"no\" automat=
ically."
    echo "  --cygwin -c <options>  Use \"options\" as value for CYGWIN envi=
ronment var."
    echo "  --name   -N <name>     sshd windows service name."
    echo "  --port   -p <n>        sshd listens on port n."
    echo "  --user   -u <account>  privileged user for service, default 'cy=
g_server'."
    echo "  --pwd    -w <passwd>   Use \"pwd\" as password for privileged u=
ser."
    echo "  --privileged           On Windows XP, require privileged user"
    echo "                         instead of LocalSystem for sshd service."
    echo
    exit 1
    ;;

  esac
done

# =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
# Action!
# =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

# Check for running ssh/sshd processes first. Refuse to do anything while
# some ssh processes are still running
if /usr/bin/ps -ef | /usr/bin/grep -q '/sshd\?$'
then
  echo
  csih_error "There are still ssh processes running. Please shut them down =
first."
fi

# Make sure the user is running in an administrative context
admin=3D$(/usr/bin/id -G | /usr/bin/grep -Eq '\<544\>' && echo yes || echo =
no)
if [ "${admin}" !=3D "yes" ]
then
  echo
  csih_warning "Running this script typically requires administrator privil=
eges!"
  csih_warning "However, it seems your account does not have these privileg=
es."
  csih_warning "Here's the list of groups in your user token:"
  echo
  /usr/bin/id -Gnz | xargs -0n1 echo "   "
  echo
  csih_warning "This usually means you're running this script from a non-ad=
min"
  csih_warning "desktop session, or in a non-elevated shell under UAC contr=
ol."
  echo
  csih_warning "Make sure you have the appropriate privileges right now,"
  csih_warning "otherwise parts of this script will probably fail!"
  echo
  echo -e "${_csih_QUERY_STR} Are you sure you want to continue?  (Say \"no=
\" if you're not sure"
  if ! csih_request "you have the required privileges)"
  then
    echo
    csih_inform "Ok.  Exiting.  Make sure to switch to an administrative ac=
count"
    csih_inform "or to start this script from an elevated shell."
    exit 1
  fi
fi

echo

warning_cnt=3D0

# Create /var/log/lastlog if not already exists
if [ -e ${LOCALSTATEDIR}/log/lastlog -a ! -f ${LOCALSTATEDIR}/log/lastlog ]
then
  echo
  csih_error_multi "${LOCALSTATEDIR}/log/lastlog exists, but is not a file.=
" \
		   "Cannot create ssh host configuration."
fi
if [ ! -e ${LOCALSTATEDIR}/log/lastlog ]
then
  /usr/bin/cat /dev/null > ${LOCALSTATEDIR}/log/lastlog
  if ! /usr/bin/chmod 644 ${LOCALSTATEDIR}/log/lastlog >/dev/null 2>&1
  then
    csih_warning "Can't set permissions on ${LOCALSTATEDIR}/log/lastlog!"
    let ++warning_cnt
  fi
fi

# Create /var/empty file used as chroot jail for privilege separation
csih_make_dir "${LOCALSTATEDIR}/empty" "Cannot create ${LOCALSTATEDIR}/empt=
y directory."
if ! /usr/bin/chmod 755 "${LOCALSTATEDIR}/empty" >/dev/null 2>&1
then
  csih_warning "Can't set permissions on ${LOCALSTATEDIR}/empty!"
  let ++warning_cnt
fi

# generate missing host keys
csih_inform "Generating missing SSH host keys"
/usr/bin/ssh-keygen -A || let warning_cnt+=3D$?

# handle ssh_config
csih_install_config "${SYSCONFDIR}/ssh_config" "${SYSCONFDIR}/defaults" || =
let ++warning_cnt
if /usr/bin/cmp "${SYSCONFDIR}/ssh_config" "${SYSCONFDIR}/defaults/${SYSCON=
FDIR}/ssh_config" >/dev/null 2>&1
then
  if [ "${port_number}" !=3D "22" ]
  then
    csih_inform "Updating ${SYSCONFDIR}/ssh_config file with requested port"
    echo "Host localhost" >> ${SYSCONFDIR}/ssh_config
    echo "    Port ${port_number}" >> ${SYSCONFDIR}/ssh_config
  fi
fi

# handle sshd_config (and privsep)
csih_install_config "${SYSCONFDIR}/sshd_config" "${SYSCONFDIR}/defaults" ||=
 let ++warning_cnt
if ! /usr/bin/cmp "${SYSCONFDIR}/sshd_config" "${SYSCONFDIR}/defaults/${SYS=
CONFDIR}/sshd_config" >/dev/null 2>&1
then
  sshd_config_configured=3Dyes
fi
sshd_strictmodes || let warning_cnt+=3D$?
sshd_privsep || let warning_cnt+=3D$?
sshd_config_tweak || let warning_cnt+=3D$?
update_services_file || let warning_cnt+=3D$?
update_inetd_conf || let warning_cnt+=3D$?
install_service || let warning_cnt+=3D$?

echo
if [ $warning_cnt -eq 0 ]
then
  csih_inform "Host configuration finished. Have fun!"
else
  csih_warning "Host configuration exited with ${warning_cnt} errors or war=
nings!"
  csih_warning "Make sure that all problems reported are fixed,"
  csih_warning "then re-run ssh-host-config."
fi
exit $warning_cnt

--hABqaeELJqnDDeDE--

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- Raw text -


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  Copyright © 2019   by DJ Delorie     Updated Jul 2019