251 lines
6.1 KiB
Bash
251 lines
6.1 KiB
Bash
#!/bin/sh
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#
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# ssh-user-config, Copyright 2000, 2001, 2002, 2003, Red Hat Inc.
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#
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# This file is part of the Cygwin port of OpenSSH.
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# Directory where the config files are stored
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SYSCONFDIR=/etc
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progname=$0
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auto_answer=""
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auto_passphrase="no"
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passphrase=""
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request()
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{
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if [ "${auto_answer}" = "yes" ]
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then
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return 0
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elif [ "${auto_answer}" = "no" ]
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then
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return 1
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fi
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answer=""
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while [ "X${answer}" != "Xyes" -a "X${answer}" != "Xno" ]
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do
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echo -n "$1 (yes/no) "
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read answer
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done
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if [ "X${answer}" = "Xyes" ]
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then
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return 0
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else
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return 1
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fi
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}
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# Check if running on NT
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_sys="`uname -a`"
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_nt=`expr "$_sys" : "CYGWIN_NT"`
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# If running on NT, check if running under 2003 Server or later
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if [ $_nt -gt 0 ]
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then
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_nt2003=`uname | awk -F- '{print ( $2 >= 5.2 ) ? 1 : 0;}'`
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fi
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# Check options
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while :
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do
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case $# in
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0)
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break
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;;
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esac
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option=$1
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shift
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case "$option" in
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-d | --debug )
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set -x
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;;
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-y | --yes )
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auto_answer=yes
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;;
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-n | --no )
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auto_answer=no
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;;
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-p | --passphrase )
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with_passphrase="yes"
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passphrase=$1
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shift
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;;
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*)
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echo "usage: ${progname} [OPTION]..."
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echo
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echo "This script creates an OpenSSH user configuration."
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echo
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echo "Options:"
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echo " --debug -d Enable shell's debug output."
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echo " --yes -y Answer all questions with \"yes\" automatically."
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echo " --no -n Answer all questions with \"no\" automatically."
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echo " --passphrase -p word Use \"word\" as passphrase automatically."
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echo
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exit 1
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;;
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esac
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done
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# Ask user if user identity should be generated
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if [ ! -f ${SYSCONFDIR}/passwd ]
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then
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echo "${SYSCONFDIR}/passwd is nonexistant. Please generate an ${SYSCONFDIR}/passwd file"
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echo 'first using mkpasswd. Check if it contains an entry for you and'
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echo 'please care for the home directory in your entry as well.'
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exit 1
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fi
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uid=`id -u`
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pwdhome=`awk -F: '{ if ( $3 == '${uid}' ) print $6; }' < ${SYSCONFDIR}/passwd`
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if [ "X${pwdhome}" = "X" ]
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then
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echo "There is no home directory set for you in ${SYSCONFDIR}/passwd."
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echo 'Setting $HOME is not sufficient!'
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exit 1
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fi
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if [ ! -d "${pwdhome}" ]
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then
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echo "${pwdhome} is set in ${SYSCONFDIR}/passwd as your home directory"
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echo 'but it is not a valid directory. Cannot create user identity files.'
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exit 1
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fi
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# If home is the root dir, set home to empty string to avoid error messages
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# in subsequent parts of that script.
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if [ "X${pwdhome}" = "X/" ]
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then
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# But first raise a warning!
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echo "Your home directory in ${SYSCONFDIR}/passwd is set to root (/). This is not recommended!"
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if request "Would you like to proceed anyway?"
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then
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pwdhome=''
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else
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exit 1
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fi
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fi
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if [ -d "${pwdhome}" -a $_nt -gt 0 -a -n "`chmod -c g-w,o-w "${pwdhome}"`" ]
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then
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echo
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echo 'WARNING: group and other have been revoked write permission to your home'
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echo " directory ${pwdhome}."
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echo ' This is required by OpenSSH to allow public key authentication using'
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echo ' the key files stored in your .ssh subdirectory.'
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echo ' Revert this change ONLY if you know what you are doing!'
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echo
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fi
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if [ -e "${pwdhome}/.ssh" -a ! -d "${pwdhome}/.ssh" ]
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then
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echo "${pwdhome}/.ssh is existant but not a directory. Cannot create user identity files."
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exit 1
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fi
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if [ ! -e "${pwdhome}/.ssh" ]
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then
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mkdir "${pwdhome}/.ssh"
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if [ ! -e "${pwdhome}/.ssh" ]
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then
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echo "Creating users ${pwdhome}/.ssh directory failed"
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exit 1
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fi
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fi
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if [ $_nt -gt 0 ]
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then
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_user="system"
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if [ $_nt2003 -gt 0 ]
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then
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grep -q '^sshd_server:' ${SYSCONFDIR}/passwd && _user="sshd_server"
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fi
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if ! setfacl -m "u::rwx,u:${_user}:r--,g::---,o::---" "${pwdhome}/.ssh"
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then
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echo "${pwdhome}/.ssh couldn't be given the correct permissions."
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echo "Please try to solve this problem first."
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exit 1
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fi
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fi
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if [ ! -f "${pwdhome}/.ssh/identity" ]
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then
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if request "Shall I create an SSH1 RSA identity file for you?"
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then
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echo "Generating ${pwdhome}/.ssh/identity"
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if [ "${with_passphrase}" = "yes" ]
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then
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ssh-keygen -t rsa1 -N "${passphrase}" -f "${pwdhome}/.ssh/identity" > /dev/null
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else
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ssh-keygen -t rsa1 -f "${pwdhome}/.ssh/identity" > /dev/null
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fi
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if request "Do you want to use this identity to login to this machine?"
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then
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echo "Adding to ${pwdhome}/.ssh/authorized_keys"
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cat "${pwdhome}/.ssh/identity.pub" >> "${pwdhome}/.ssh/authorized_keys"
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fi
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fi
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fi
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if [ ! -f "${pwdhome}/.ssh/id_rsa" ]
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then
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if request "Shall I create an SSH2 RSA identity file for you? (yes/no) "
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then
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echo "Generating ${pwdhome}/.ssh/id_rsa"
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if [ "${with_passphrase}" = "yes" ]
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then
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ssh-keygen -t rsa -N "${passphrase}" -f "${pwdhome}/.ssh/id_rsa" > /dev/null
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else
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ssh-keygen -t rsa -f "${pwdhome}/.ssh/id_rsa" > /dev/null
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fi
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if request "Do you want to use this identity to login to this machine?"
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then
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echo "Adding to ${pwdhome}/.ssh/authorized_keys"
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cat "${pwdhome}/.ssh/id_rsa.pub" >> "${pwdhome}/.ssh/authorized_keys"
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fi
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fi
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fi
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if [ ! -f "${pwdhome}/.ssh/id_dsa" ]
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then
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if request "Shall I create an SSH2 DSA identity file for you? (yes/no) "
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then
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echo "Generating ${pwdhome}/.ssh/id_dsa"
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if [ "${with_passphrase}" = "yes" ]
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then
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ssh-keygen -t dsa -N "${passphrase}" -f "${pwdhome}/.ssh/id_dsa" > /dev/null
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else
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ssh-keygen -t dsa -f "${pwdhome}/.ssh/id_dsa" > /dev/null
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fi
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if request "Do you want to use this identity to login to this machine?"
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then
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echo "Adding to ${pwdhome}/.ssh/authorized_keys"
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cat "${pwdhome}/.ssh/id_dsa.pub" >> "${pwdhome}/.ssh/authorized_keys"
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fi
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fi
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fi
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if [ $_nt -gt 0 -a -e "${pwdhome}/.ssh/authorized_keys" ]
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then
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if ! setfacl -m "u::rw-,u:${_user}:r--,g::---,o::---" "${pwdhome}/.ssh/authorized_keys"
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then
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echo
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echo "WARNING: Setting correct permissions to ${pwdhome}/.ssh/authorized_keys"
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echo "failed. Please care for the correct permissions. The minimum requirement"
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echo "is, the owner and ${_user} both need read permissions."
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echo
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fi
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fi
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echo
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echo "Configuration finished. Have fun!"
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