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  • Committer: Teddy Hogeborn
  • Date: 2014-06-22 02:19:30 UTC
  • Revision ID: teddy@recompile.se-20140622021930-icl7h4cm97blhjml
mandos-keygen: Generate "checker" option to use SSH fingerprints.

To turn this off, use a new "--no-ssh" option to mandos-keygen.

* INSTALL (Mandos Server, Mandos Client): Document new suggested
                                          installation of SSH.
* Makefile (confdir/clients.conf): Use new "--no-ssh" option to
                                   "mandos-keygen".
* debian/control (mandos/Depends): Changed to "fping | ssh-client".
  (mandos-client/Recommends): New; set to "ssh".
* intro.xml (FREQUENTLY ASKED QUESTIONS): Rename and rewrite section
                                          called "Faking ping
                                          replies?" to address new
                                          default behavior.
* mandos-clients.conf.xml (OPTIONS/checker): Briefly discuss new
                                             behavior of
                                             mandos-keygen.
* mandos-keygen: Bug fix: Suppress failure output of "shred" to remove
                 "sec*", since no such files may exist.
 (password mode): Scan for SSH key fingerprints and output as new
                  "checker" and "ssh_fingerprint" options, unless new
                  "--no-ssh" option is given.
* mandos-keygen.xml (SYNOPSIS/--force): Bug fix: Document short form.
  (OPTIONS/--no-ssh): New.
  (SEE ALSO): Add reference "ssh-keyscan(1)".
* plugins.d/mandos-client.xml (SECURITY): Briefly mention the
                                          possibility of using SSH key
                                          fingerprints for checking.

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Lines of Context:
mandos-keygen
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KEYCOMMENT=""
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KEYEXPIRE=0
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FORCE=no
 
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SSH=yes
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KEYCOMMENT_ORIG="$KEYCOMMENT"
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mode=keygen
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fi
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# Parse options
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TEMP=`getopt --options vhpF:d:t:l:s:L:n:e:c:x:f \
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    --longoptions version,help,password,passfile:,dir:,type:,length:,subtype:,sublength:,name:,email:,comment:,expire:,force \
 
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TEMP=`getopt --options vhpF:d:t:l:s:L:n:e:c:x:fS \
 
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    --longoptions version,help,password,passfile:,dir:,type:,length:,subtype:,sublength:,name:,email:,comment:,expire:,force,no-ssh \
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    --name "$0" -- "$@"`
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help(){
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                        Encrypt a password from FILE using the key in
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                        the key directory.  All options other than
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                        --dir and --name are ignored.
 
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  -S, --no-ssh          Don't get SSH key or set "checker" option.
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EOF
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}
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        -c|--comment) KEYCOMMENT="$2"; shift 2;;
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        -x|--expire) KEYEXPIRE="$2"; shift 2;;
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        -f|--force) FORCE=yes; shift;;
 
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        -S|--no-ssh) SSH=no; shift;;
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        -v|--version) echo "$0 $VERSION"; exit;;
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        -h|--help) help; exit;;
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        --) shift; break;;
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trap "
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set +e; \
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test -n \"$SECFILE\" && shred --remove \"$SECFILE\"; \
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shred --remove \"$RINGDIR\"/sec*;
 
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shred --remove \"$RINGDIR\"/sec* 2>/dev/null;
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test -n \"$BATCHFILE\" && rm --force \"$BATCHFILE\"; \
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rm --recursive --force \"$RINGDIR\";
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tty --quiet && stty echo; \
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fi
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if [ "$mode" = password ]; then
 
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    # Make SSH be 0 or 1
 
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    case "$SSH" in
 
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        [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]) SSH=1;;
 
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        [Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|*) SSH=0;;
 
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    esac
 
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    if [ $SSH -eq 1 ]; then
 
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        set +e
 
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        ssh_fingerprint="`ssh-keyscan localhost 2>/dev/null`"
 
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        if [ $? -ne 0 ]; then
 
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            ssh_fingerprint=""
 
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        fi
 
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        set -e
 
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        ssh_fingerprint="${ssh_fingerprint#localhost }"
 
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    fi
 
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    # Import key into temporary key rings
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    gpg --quiet --batch --no-tty --no-options --enable-dsa2 \
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        --homedir "$RINGDIR" --trust-model always --armor \
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                /^[^-]/s/^/    /p
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            }
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        }' < "$SECFILE"
 
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    if [ -n "$ssh_fingerprint" ]; then
 
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        echo 'checker = ssh-keyscan %%(host)s 2>/dev/null | grep --fixed-strings --line-regexp --quiet --regexp="%%(host)s %(ssh_fingerprint)s"'
 
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        echo "ssh_fingerprint = ${ssh_fingerprint}"
 
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    fi
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fi
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trap - EXIT
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    shred --remove "$SECFILE"
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fi
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# Remove the key rings
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shred --remove "$RINGDIR"/sec*
 
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shred --remove "$RINGDIR"/sec* 2>/dev/null
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rm --recursive --force "$RINGDIR"