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

diff --git a/common-src/amaespipe.sh b/common-src/amaespipe.sh
index 8d3aa1c93ed625f413bfff758692fe17f51c466f..2320e4ca4a371b1dbf989107038fb2f5c0e7b47a 100755 (executable)
--- a/common-src/amaespipe.sh
+++ b/common-src/amaespipe.sh
@@ -1,10 +1,11 @@
 #! @SHELL@
 #
-# Copyright (c) 2005 Zmanda Inc.  All Rights Reserved.
+# Copyright (c) 2007-2012 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 free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
 # 
 # This program is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
@@ -15,8 +16,8 @@
 # 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
+# Contact information: Zmanda Inc, 465 S. Mathilda Ave., Suite 300
+# Sunnyvale, CA 94086, USA, or: http://www.zmanda.com
 #
 
 prefix="@prefix@"
@@ -52,24 +53,25 @@ FDNUMBER=3
 
 if test x$1 = x-d ; then
     # decrypt
-    n=`head -c 10 - | tr -d -c 0-9a-zA-Z`
+    n=`/bin/dd bs=10 count=1 2> /dev/null | tr -d -c 0-9a-zA-Z`
     if test x${n} != xbz2aespipe ; then
-        echo `_ 'bz2aespipe: wrong magic - aborted'` >/dev/tty
+        echo "bz2aespipe: wrong magic - aborted" >/dev/tty
         exit 1
     fi
-    itercountk=`head -c 10 - | tr -d -c 0-9`
+    itercountk=`/bin/dd bs=10 count=1 2> /dev/null | tr -d -c 0-9`
     if test x${itercountk} = x ; then itercountk=0; fi
-    n=`head -c 1 - | tr -d -c 0-9`
+    n=`/bin/dd bs=1 count=1 2> /dev/null | tr -d -c 0-9`
     encryption=AES128
     if test x${n} = x1 ; then encryption=AES192; fi
     if test x${n} = x2 ; then encryption=AES256; fi
-    n=`head -c 1 - | tr -d -c 0-9`
+    n=`/bin/dd bs=1 count=1 2> /dev/null | tr -d -c 0-9`
     hashfunc=SHA256
     if test x${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
+    seedstr=`/bin/dd bs=24 count=1 2> /dev/null | tr -d -c 0-9a-zA-Z+/`
+    aespipe -K ${GPGKEY} -p ${FDNUMBER} -e ${encryption} -H ${hashfunc} \
+       -S ${seedstr} -C ${itercountk} -d
 else
     # encrypt
     echo -n bz2aespipe
@@ -85,6 +87,7 @@ else
     if test x${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}
+    aespipe -K ${GPGKEY} -p ${FDNUMBER} -e ${ENCRYPTION} -H ${HASHFUNC} \
+       -S ${seedstr} -C ${ITERCOUNTK} -w ${WAITSECONDS}
 fi
 exit 0