| 1 | #! /bin/sh |
| 2 | ### |
| 3 | ### Issue cards containing a bunch of keeper secrets |
| 4 | ### |
| 5 | ### (c) 2011 Mark Wooding |
| 6 | ### |
| 7 | |
| 8 | ###----- Licensing notice --------------------------------------------------- |
| 9 | ### |
| 10 | ### This file is part of the distorted.org.uk key management suite. |
| 11 | ### |
| 12 | ### distorted-keys is free software; you can redistribute it and/or modify |
| 13 | ### it under the terms of the GNU General Public License as published by |
| 14 | ### the Free Software Foundation; either version 2 of the License, or |
| 15 | ### (at your option) any later version. |
| 16 | ### |
| 17 | ### distorted-keys is distributed in the hope that it will be useful, |
| 18 | ### but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | ### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 | ### GNU General Public License for more details. |
| 21 | ### |
| 22 | ### You should have received a copy of the GNU General Public License |
| 23 | ### along with distorted-keys; if not, write to the Free Software Foundation, |
| 24 | ### Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 25 | |
| 26 | set -e |
| 27 | case "${KEYSLIB+t}" in t) ;; *) echo >&2 "$0: KEYSLIB unset"; exit 1 ;; esac |
| 28 | . "$KEYSLIB"/keyfunc.sh |
| 29 | |
| 30 | defhelp <<HELP |
| 31 | [-pt] KEEPER [INDICES ...] |
| 32 | Typeset cards for a set of keeper secrets. |
| 33 | |
| 34 | This program creates a set of printable cards containing key nubs from the |
| 35 | keeper set KEEPER, specifically the keys with the given INDICES. Elements of |
| 36 | the list are either simple integers or ranges [LOW]-[HIGH]; if LOW is |
| 37 | omitted, it means 0, and if HIGH is omitted, it means the highest possible |
| 38 | index. If no INDICES are given then all secret keys are written. |
| 39 | |
| 40 | The public keys are found in $KEYS/keeper/KEEPER/I.pub; |
| 41 | key nubs are read from the safe place where \`keys new-keeper' left |
| 42 | them. |
| 43 | |
| 44 | If the \`-p' option is given, then the output is a PostScript file which |
| 45 | can be printed immediately. If the \`-t' option is given, then the output |
| 46 | is a \`tar' archive containing a TeX source file and images, which must |
| 47 | be processed using \`latex' and \`dvips'. The default is \`-t'. |
| 48 | HELP |
| 49 | |
| 50 | ## Read options. |
| 51 | mode=tar |
| 52 | while getopts "pt" opt; do |
| 53 | case "$opt" in |
| 54 | p) mode=ps ;; |
| 55 | t) mode=tar ;; |
| 56 | *) usage_err ;; |
| 57 | esac |
| 58 | done |
| 59 | shift $(( $OPTIND - 1 )) |
| 60 | |
| 61 | ## Parse the command line. |
| 62 | case $# in 0) usage_err ;; esac |
| 63 | keeper=$1; shift |
| 64 | checkword "keeper set label" "$keeper" |
| 65 | |
| 66 | ## Find out about the set. |
| 67 | if [ ! -f $KEYS/keeper/$keeper/meta ]; then |
| 68 | echo >&2 "$quis: unknown keeper set \`$keeper'" |
| 69 | exit 1 |
| 70 | fi |
| 71 | read n hunoz <$KEYS/keeper/$keeper/meta |
| 72 | |
| 73 | ## Check that nubs are available for the keeper set. |
| 74 | reqsafe |
| 75 | if [ ! -d $SAFE/keys.keeper/$keeper/ ]; then |
| 76 | echo >&2 "$quis: no nubs available for keeper set \`$keeper'" |
| 77 | exit 1 |
| 78 | fi |
| 79 | cd $SAFE/keys.keeper/$keeper/ |
| 80 | |
| 81 | ## Build a colon-separated list of the indices we actually want. |
| 82 | want=: |
| 83 | case $# in 0) set 0- ;; esac |
| 84 | for range in "$@"; do |
| 85 | case "$range" in |
| 86 | *[!-0-9]* | *[!0-9]*-* | *-*[!0-9]*) |
| 87 | echo >&2 "$quis: bad index range \`$range'" |
| 88 | exit 1 |
| 89 | ;; |
| 90 | *-*) |
| 91 | low=${range%-*} high=${range#*-} |
| 92 | ;; |
| 93 | *) |
| 94 | low=$range high=$range |
| 95 | ;; |
| 96 | esac |
| 97 | case "$low" in ?*) ;; *) low=0 ;; esac |
| 98 | case "$high" in ?*) ;; *) high=$(( $n - 1 )) ;; esac |
| 99 | if [ 0 -gt $low -o $low -gt $high -o $high -ge $n ]; then |
| 100 | echo >&2 "$quis: invalid index range \`$range'" |
| 101 | exit 1 |
| 102 | fi |
| 103 | i=$(( $low + 0 )) |
| 104 | while [ $i -le $high ]; do |
| 105 | case $want in *:"$i":*) ;; *) want=$want$i: ;; esac |
| 106 | i=$(( $i + 1 )) |
| 107 | done |
| 108 | done |
| 109 | |
| 110 | ## Start working on the output file. This will contain deep secrets, so |
| 111 | ## don't leave stuff easily readable. |
| 112 | mktmp |
| 113 | umask 077 |
| 114 | exec 3>$tmp/$keeper.tex |
| 115 | cat >&3 $ETC/keeper-cards.tex |
| 116 | |
| 117 | ## Write the basic configuration stuff. |
| 118 | cat >&3 <<EOF |
| 119 | |
| 120 | %% General configuration for the cards. |
| 121 | \def\keeper{$keeper} |
| 122 | \def\total{$n} |
| 123 | EOF |
| 124 | |
| 125 | ## Start the document body. |
| 126 | cat >&3 <<'EOF' |
| 127 | |
| 128 | %% The actual content. |
| 129 | \begin{document} |
| 130 | EOF |
| 131 | |
| 132 | ## Work through the requested indices. |
| 133 | i=0 |
| 134 | while [ $i -lt $n ]; do |
| 135 | case $want in |
| 136 | *:"$i":*) |
| 137 | read secret <$i |
| 138 | tr -d '\n' <$i | qrencode -m0 -s1 -o$tmp/$i.png |
| 139 | convert $tmp/$i.png $tmp/$i.eps |
| 140 | cat >&3 <<EOF |
| 141 | \card{$i}{$secret} |
| 142 | EOF |
| 143 | esac |
| 144 | i=$(( $i + 1 )) |
| 145 | done |
| 146 | |
| 147 | ## Wrap up and build the document. |
| 148 | cat >&3 <<'EOF' |
| 149 | \end{document} |
| 150 | EOF |
| 151 | exec 3>&- |
| 152 | |
| 153 | case $mode in |
| 154 | ps) |
| 155 | if ! (cd $tmp |
| 156 | exec </dev/null >tex.out 2>&1 |
| 157 | latex $keeper.tex && dvips -o$keeper.ps $keeper.dvi); then |
| 158 | echo >&2 "$quis: document formatting failed" |
| 159 | sed >&2 's/^/| /' $tmp/tex.out |
| 160 | exit 1 |
| 161 | fi |
| 162 | cat $tmp/$keeper.ps |
| 163 | ;; |
| 164 | tar) |
| 165 | (cd $tmp; tar cf - $keeper.tex *.eps) |
| 166 | ;; |
| 167 | esac |
| 168 | |
| 169 | ###----- That's all, folks -------------------------------------------------- |