secure/lib/libssh/generate-blacklist.sh

   1 #!/bin/bash
   2 # $DragonFly: src/secure/lib/libssh/generate-blacklist.sh,v 1.1 2008/05/21 14:07:41 corecode Exp $
   3 set -e
   4
   5 LIBSSL=$(apt-cache policy libssl0.9.8 | grep Installed | awk '{print $NF}')
   6 dpkg --compare-versions "$LIBSSL" lt 0.9.8g-9 || {
   7     echo "Your libssl0.9.8 is newer than the fixed version (0.9.8g-9)." >&2
   8     echo "This script is only sensible to run with a broken version.  :)" >&2
   9     exit 1
  10 }
  11
  12 KEYTYPE=$(echo "$1" | tr A-Z a-z)
  13 KEYSIZE="$2"
  14 if [ -z "$KEYTYPE" ] || [ -z "$KEYSIZE" ]; then
  15     echo "Usage: $0 KEYTYPE KEYSIZE" >&2
  16     exit 1
  17 fi
  18
  19 WORKDIR=$(mktemp -d -t blacklist-XXXXXX)
  20 cd "$WORKDIR"
  21
  22 cat >getpid.c <<EOM
  23 /*
  24  * Compile:
  25
  26 gcc -fPIC -c getpid.c -o getpid.o
  27 gcc -shared -o getpid.so getpid.o
  28
  29  * Use:
  30
  31 FORCE_PID=1234 LD_PRELOAD=./getpid.so bash
  32
  33 #
  34 # Copyright (C) 2001-2008 Kees Cook
  35 # kees@outflux.net, http://outflux.net/
  36 #
  37 # This program is free software; you can redistribute it and/or
  38 # modify it under the terms of the GNU General Public License
  39 # as published by the Free Software Foundation; either version 2
  40 # of the License, or (at your option) any later version.
  41 #
  42 # This program is distributed in the hope that it will be useful,
  43 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  44 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  45 # GNU General Public License for more details.
  46 #
  47 # You should have received a copy of the GNU General Public License
  48 # along with this program; if not, write to the Free Software
  49 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  50 # http://www.gnu.org/copyleft/gpl.html
  51
  52 */
  53
  54 #include <sys/types.h>
  55 #include <unistd.h>
  56 #include <stdlib.h>
  57
  58 pid_t getpid(void)
  59 {
  60     return atoi(getenv("FORCE_PID"));
  61 }
  62 EOM
  63
  64 gcc -fPIC -c getpid.c -o getpid.o
  65 gcc -shared -o getpid.so getpid.o
  66
  67 echo "# generated on $(uname -m) at $(date)"
  68
  69 for pid in $(seq 1 32767)
  70 do
  71     FILE="key-$pid"
  72     HASH=$(FORCE_PID="$pid" LD_PRELOAD=./getpid.so \
  73         ssh-keygen -P "" -t "$KEYTYPE" -b "$KEYSIZE" -f "$FILE" | \
  74             grep :..: | cut -d" " -f1 | sed -e 's/://g')
  75     rm -f "$FILE" "$FILE".pub
  76     echo "$HASH"
  77 done
  78
  79 rm -f getpid.*
  80 cd /
  81 rmdir "$WORKDIR"