Imported Upstream version 2.6.0

[debian/amanda] / common-src / amaespipe.sh

diff --git a/common-src/amaespipe.sh b/common-src/amaespipe.sh
new file mode 100755 (executable)
index 0000000..8d3aa1c
--- /dev/null
+++ b/common-src/amaespipe.sh
@@ -0,0 +1,90 @@
+#! @SHELL@
+#
+# Copyright (c) 2005 Zmanda Inc.  All Rights Reserved.
+# 
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License version 2 as published
+# by the Free Software Foundation.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+# for more details.
+# 
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+# 
+# Contact information: Zmanda Inc, 505 N Mathlida Ave, Suite 120
+# Sunnyvale, CA 94085, USA, or: http://www.zmanda.com
+#
+
+prefix="@prefix@"
+exec_prefix="@exec_prefix@"
+sbindir="@sbindir@"
+amlibexecdir="@amlibexecdir@"
+. "${amlibexecdir}/amanda-sh-lib.sh"
+
+# add sbin and ucb dirs
+PATH="$PATH:/usr/sbin:/sbin:/usr/ucb"
+export PATH
+
+# wrapper script to use aespipe
+# based on bz2aespipe distributed by aespipe from 
+# http://loop-aes.sourceforge.net/
+# FILE FORMAT
+# 10 bytes: constant string 'bz2aespipe'
+# 10 bytes: itercountk digits
+# 1 byte: '0' = AES128, '1' = AES192, '2' = AES256
+# 1 byte: '0' = SHA256, '1' = SHA384, '2' = SHA512, '3' = RMD160
+# 24 bytes: random seed string
+# remaining bytes are aespipe encrypted
+
+# These definitions are only used when encrypting.
+# Decryption will autodetect these definitions from archive.
+ENCRYPTION=AES256
+HASHFUNC=SHA256
+ITERCOUNTK=100
+WAITSECONDS=1
+AMANDA_HOME=~@CLIENT_LOGIN@
+GPGKEY="$AMANDA_HOME/.gnupg/am_key.gpg"
+FDNUMBER=3
+
+if test x$1 = x-d ; then
+    # decrypt
+    n=`head -c 10 - | tr -d -c 0-9a-zA-Z`
+    if test x${n} != xbz2aespipe ; then
+        echo `_ 'bz2aespipe: wrong magic - aborted'` >/dev/tty
+        exit 1
+    fi
+    itercountk=`head -c 10 - | tr -d -c 0-9`
+    if test x${itercountk} = x ; then itercountk=0; fi
+    n=`head -c 1 - | tr -d -c 0-9`
+    encryption=AES128
+    if test x${n} = x1 ; then encryption=AES192; fi
+    if test x${n} = x2 ; then encryption=AES256; fi
+    n=`head -c 1 - | tr -d -c 0-9`
+    hashfunc=SHA256
+    if test x${n} = x1 ; then hashfunc=SHA384; fi
+    if test x${n} = x2 ; then hashfunc=SHA512; fi
+    if test x${n} = x3 ; then hashfunc=RMD160; fi
+    seedstr=`head -c 24 - | tr -d -c 0-9a-zA-Z+/`
+    aespipe -K ${GPGKEY} -p ${FDNUMBER} -e ${encryption} -H ${hashfunc} -S ${seedstr} -C ${itercountk} -d
+else
+    # encrypt
+    echo -n bz2aespipe
+    echo ${ITERCOUNTK} | awk '{printf "%10u", $1;}'
+    n=`echo ${ENCRYPTION} | tr -d -c 0-9`
+    aesstr=0
+    if test x${n} = x192 ; then aesstr=1; fi
+    if test x${n} = x256 ; then aesstr=2; fi
+    n=`echo ${HASHFUNC} | tr -d -c 0-9`
+    hashstr=0
+    if test x${n} = x384 ; then hashstr=1; fi
+    if test x${n} = x512 ; then hashstr=2; fi
+    if test x${n} = x160 ; then hashstr=3; fi
+    seedstr=`head -c 18 /dev/urandom | uuencode -m - | head -n 2 | tail -n 1`
+    echo -n ${aesstr}${hashstr}${seedstr}
+    aespipe -K ${GPGKEY} -p ${FDNUMBER} -e ${ENCRYPTION} -H ${HASHFUNC} -S ${seedstr} -C ${ITERCOUNTK} -w ${WAITSECONDS}
+fi
+exit 0