mdw@git.distorted.org.uk Git - ssh-ca/blob - bin/sign

   1 #! /bin/sh
   2
   3 set -e
   4 . lib/func.sh
   5 orig_domain=$domain date=$(date +%Y-%m-%d)
   6
   7 ## The key types are adorned with bit lengths.  Work out the raw key type
   8 ## names.
   9 rawkeytypes=""
  10 for kt in $keytypes; do
  11   rawkeytypes="$rawkeytypes ${kt%:*}"
  12 done
  13
  14 ## Start a new output directory.
  15 rm -rf publish.new
  16 mkdir publish.new
  17 exec 3<etc/hosts 4>publish.new/hosts.list 5>publish.new/known_hosts
  18 echo ":certificate-authority" >&4
  19 for kt in $rawkeytypes; do
  20   cp ca/ca-$kt.pub publish.new/
  21   read pub <ca/ca-$kt.pub
  22   echo "@cert-authority $scope $pub" |
  23         tee publish.new/ca-$kt.entry >&4
  24   ssh-keygen -lv -fca/ca-$kt.pub | sed 's,^,| ,' >&4
  25 done
  26
  27 ## Sign the various host keys.
  28 last=%%%
  29 idomain=$domain
  30 echo >&5 "### BEGIN $idomain KEYS (generated $date)"
  31 while read line <&3; do
  32
  33   ## Ignore comments and empty lines.
  34   case "$line" in
  35     "#"* | "") continue ;;
  36     ##*[!       ]*) ;;
  37     ##*) continue ;;
  38   esac
  39
  40   ## Read the host line.
  41   set -- $line
  42   case "$1" in
  43     @domain) domain=$2 ;;
  44     @*) echo >&2 "$0: unknown directive \`$1'"; exit 1 ;;
  45   esac
  46   host=$1
  47   names=""
  48   nicks=""
  49
  50   ## If this is a different host, then start a new section of the list.
  51   case "$last" in
  52     "$host") ;;
  53     *) { echo; echo ":host $host"; } >&4 ;;
  54   esac
  55   last=$host
  56
  57   ## Build a list of names for the host.
  58   for n in "$@"; do
  59     case "$n" in
  60       .*) for h in $nicks; do names=${names:+$names,}$h$n.$domain; done ;;
  61       *.* | *:*) names=${names:+$names,}$n ;;
  62       *) nicks=${nicks:+$nicks }$n names=${names:+$names,}$n.$domain ;;
  63     esac
  64   done
  65
  66   ## Sign certificates.
  67   for kt in $rawkeytypes; do
  68     if [ ! -f host/$host-$kt.pub ]; then continue; fi
  69     cp host/$host-$kt.pub publish.new/
  70     ssh-keygen -q -tv00 -sca/ca-$kt \
  71       -h -I"$cacomment:$host.$domain" -n$names \
  72       -V$validity \
  73       publish.new/$host-$kt.pub
  74     mv publish.new/$host-$kt-cert.pub \
  75       publish.new/$host-$kt.cert
  76     for fd in 4 5; do
  77       { printf "%s " $names; cat host/$host-$kt.pub; } >&$fd
  78     done
  79     ssh-keygen -lv -fhost/$host-$kt.pub | sed 's,^,| ,' >&4
  80   done
  81 done
  82 echo >&5 "### END $idomain KEYS"
  83 exec 3>&- 4>&- 5>&-
  84
  85 ## Sign the list.
  86 run_gpg --armor -o publish.new/hosts.asc \
  87   --clearsign publish.new/hosts.list
  88 rm publish.new/hosts.list
  89
  90 ## Include a copy of the public key.
  91 run_gpg --export --armor -o publish.new/ca-gnupg.asc
  92
  93 ## Done.
  94 if [ -d publish ]; then
  95   rm -rf publish.old
  96   mv publish publish.old
  97 fi
  98 mv publish.new publish
  99 rm -rf publish.old