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-rw-r--r--contrib/cygwin/ssh-user-config257
1 files changed, 257 insertions, 0 deletions
diff --git a/contrib/cygwin/ssh-user-config b/contrib/cygwin/ssh-user-config
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+#!/bin/bash
+#
+# ssh-user-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
+# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+# IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+# DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
+# THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+# ======================================================================
+# Initialization
+# ======================================================================
+PROGNAME=$(basename -- $0)
+_tdir=$(dirname -- $0)
+PROGDIR=$(cd $_tdir && pwd)
+
+CSIH_SCRIPT=/usr/share/csih/cygwin-service-installation-helper.sh
+
+# Subdirectory where the new package is being installed
+PREFIX=/usr
+
+# Directory where the config files are stored
+SYSCONFDIR=/etc
+
+source ${CSIH_SCRIPT}
+
+auto_passphrase="no"
+passphrase=""
+pwdhome=
+with_passphrase=
+
+# ======================================================================
+# Routine: create_identity
+# optionally create identity of type argument in ~/.ssh
+# optionally add result to ~/.ssh/authorized_keys
+# ======================================================================
+create_identity() {
+ local file="$1"
+ local type="$2"
+ local name="$3"
+ if [ ! -f "${pwdhome}/.ssh/${file}" ]
+ then
+ if csih_request "Shall I create a ${name} identity file for you?"
+ then
+ csih_inform "Generating ${pwdhome}/.ssh/${file}"
+ if [ "${with_passphrase}" = "yes" ]
+ then
+ ssh-keygen -t "${type}" -N "${passphrase}" -f "${pwdhome}/.ssh/${file}" > /dev/null
+ else
+ ssh-keygen -t "${type}" -f "${pwdhome}/.ssh/${file}" > /dev/null
+ fi
+ if csih_request "Do you want to use this identity to login to this machine?"
+ then
+ csih_inform "Adding to ${pwdhome}/.ssh/authorized_keys"
+ cat "${pwdhome}/.ssh/${file}.pub" >> "${pwdhome}/.ssh/authorized_keys"
+ fi
+ fi
+ fi
+} # === End of create_ssh1_identity() === #
+readonly -f create_identity
+
+# ======================================================================
+# Routine: check_user_homedir
+# Perform various checks on the user's home directory
+# SETS GLOBAL VARIABLE:
+# pwdhome
+# ======================================================================
+check_user_homedir() {
+ pwdhome=$(getent passwd $UID | awk -F: '{ print $6; }')
+ if [ "X${pwdhome}" = "X" ]
+ then
+ csih_error_multi \
+ "There is no home directory set for you in the account database." \
+ 'Setting $HOME is not sufficient!'
+ fi
+
+ if [ ! -d "${pwdhome}" ]
+ then
+ csih_error_multi \
+ "${pwdhome} is set in the account database as your home directory" \
+ 'but it is not a valid directory. Cannot create user identity files.'
+ fi
+
+ # If home is the root dir, set home to empty string to avoid error messages
+ # in subsequent parts of that script.
+ if [ "X${pwdhome}" = "X/" ]
+ then
+ # But first raise a warning!
+ csih_warning "Your home directory in the account database is set to root (/). This is not recommended!"
+ if csih_request "Would you like to proceed anyway?"
+ then
+ pwdhome=''
+ else
+ csih_warning "Exiting. Configuration is not complete"
+ exit 1
+ fi
+ fi
+
+ if [ -d "${pwdhome}" -a -n "`chmod -c g-w,o-w "${pwdhome}"`" ]
+ then
+ echo
+ csih_warning 'group and other have been revoked write permission to your home'
+ csih_warning "directory ${pwdhome}."
+ csih_warning 'This is required by OpenSSH to allow public key authentication using'
+ csih_warning 'the key files stored in your .ssh subdirectory.'
+ csih_warning 'Revert this change ONLY if you know what you are doing!'
+ echo
+ fi
+} # === End of check_user_homedir() === #
+readonly -f check_user_homedir
+
+# ======================================================================
+# Routine: check_user_dot_ssh_dir
+# Perform various checks on the ~/.ssh directory
+# PREREQUISITE:
+# pwdhome -- check_user_homedir()
+# ======================================================================
+check_user_dot_ssh_dir() {
+ if [ -e "${pwdhome}/.ssh" -a ! -d "${pwdhome}/.ssh" ]
+ then
+ csih_error "${pwdhome}/.ssh is existent but not a directory. Cannot create user identity files."
+ fi
+
+ if [ ! -e "${pwdhome}/.ssh" ]
+ then
+ mkdir "${pwdhome}/.ssh"
+ if [ ! -e "${pwdhome}/.ssh" ]
+ then
+ csih_error "Creating users ${pwdhome}/.ssh directory failed"
+ fi
+ fi
+} # === End of check_user_dot_ssh_dir() === #
+readonly -f check_user_dot_ssh_dir
+
+# ======================================================================
+# Routine: fix_authorized_keys_perms
+# Corrects the permissions of ~/.ssh/authorized_keys
+# PREREQUISITE:
+# pwdhome -- check_user_homedir()
+# ======================================================================
+fix_authorized_keys_perms() {
+ if [ -e "${pwdhome}/.ssh/authorized_keys" ]
+ then
+ setfacl -b "${pwdhome}/.ssh/authorized_keys" 2>/dev/null || echo -n
+ if ! chmod u-x,g-wx,o-wx "${pwdhome}/.ssh/authorized_keys"
+ then
+ csih_warning "Setting correct permissions to ${pwdhome}/.ssh/authorized_keys"
+ csih_warning "failed. Please care for the correct permissions. The minimum requirement"
+ csih_warning "is, the owner needs read permissions."
+ echo
+ fi
+ fi
+} # === End of fix_authorized_keys_perms() === #
+readonly -f fix_authorized_keys_perms
+
+
+# ======================================================================
+# Main Entry Point
+# ======================================================================
+
+# Check how the script has been started. If
+# (1) it has been started by giving the full path and
+# that path is /etc/postinstall, OR
+# (2) Otherwise, if the environment variable
+# SSH_USER_CONFIG_AUTO_ANSWER_NO is set
+# then set auto_answer to "no". This allows automatic
+# creation of the config files in /etc w/o overwriting
+# them if they already exist. In both cases, color
+# escape sequences are suppressed, so as to prevent
+# cluttering setup's logfiles.
+if [ "$PROGDIR" = "/etc/postinstall" ]
+then
+ csih_auto_answer="no"
+ csih_disable_color
+fi
+if [ -n "${SSH_USER_CONFIG_AUTO_ANSWER_NO}" ]
+then
+ csih_auto_answer="no"
+ csih_disable_color
+fi
+
+# ======================================================================
+# Parse options
+# ======================================================================
+while :
+do
+ case $# in
+ 0)
+ break
+ ;;
+ esac
+
+ option=$1
+ shift
+
+ case "$option" in
+ -d | --debug )
+ set -x
+ csih_trace_on
+ ;;
+
+ -y | --yes )
+ csih_auto_answer=yes
+ ;;
+
+ -n | --no )
+ csih_auto_answer=no
+ ;;
+
+ -p | --passphrase )
+ with_passphrase="yes"
+ passphrase=$1
+ shift
+ ;;
+
+ *)
+ echo "usage: ${PROGNAME} [OPTION]..."
+ echo
+ echo "This script creates an OpenSSH user configuration."
+ echo
+ echo "Options:"
+ echo " --debug -d Enable shell's debug output."
+ echo " --yes -y Answer all questions with \"yes\" automatically."
+ echo " --no -n Answer all questions with \"no\" automatically."
+ echo " --passphrase -p word Use \"word\" as passphrase automatically."
+ echo
+ exit 1
+ ;;
+
+ esac
+done
+
+# ======================================================================
+# Action!
+# ======================================================================
+
+check_user_homedir
+check_user_dot_ssh_dir
+create_identity id_rsa rsa "SSH2 RSA"
+create_identity id_dsa dsa "SSH2 DSA"
+create_identity id_ecdsa ecdsa "SSH2 ECDSA"
+create_identity identity rsa1 "(deprecated) SSH1 RSA"
+fix_authorized_keys_perms
+
+echo
+csih_inform "Configuration finished. Have fun!"
+
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-03 23:04:31 +0000