mdw@git.distorted.org.uk Git - distorted-letsencrypt/blob - bin/fix-cert-chain

   1 #! /bin/sh -e
   2
   3 bad_issuers="
   4 O = Digital Signature Trust Co., CN = DST Root CA X3
   5 "
   6
   7 case $# in
   8   1) certs=$1 ;;
   9   *) echo >&2 "usage: $0 CERTLIST-FILE"; exit 2 ;;
  10 esac
  11
  12 nl="
  13 "
  14 mode=skip all=
  15 while IFS= read -r line; do
  16   case $line,$mode in
  17     "-----BEGIN CERTIFICATE-----",skip)
  18       mode=keep
  19       buf="$line$nl"
  20       ;;
  21     "-----END CERTIFICATE-----",keep)
  22       mode=skip
  23       buf="$buf$line"
  24       keep=t
  25       case "$nl$nl$all$nl$nl" in
  26         *"$nl$nl$buf$nl$nl"*) keep=nil ;;
  27       esac
  28       case $keep in
  29         t)
  30           issuer=$(echo "$buf" | openssl x509 -noout -issuer)
  31           case $bad_issuers in $"$nl$issuer$nl"*) keep=nil ;; esac
  32           ;;
  33       esac
  34       case $keep in t) all="${all:+$all$nl$nl}$buf" ;; esac
  35       ;;
  36     *,keep) buf="$buf$line$nl" ;;
  37   esac
  38 done <"$certs"
  39
  40 case $all in "") echo >&2 "$0: no certificates found"; exit 127 ;; esac
  41 echo "$all"