mirror of
https://github.com/Llewellynvdm/Tomb.git
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2141 lines
61 KiB
Bash
Executable File
2141 lines
61 KiB
Bash
Executable File
#!/bin/zsh
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#
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# Tomb, the Crypto Undertaker
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#
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# a tool to easily operate file encryption of private and secret data
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#
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# {{{ Copyleft (C) 2007-2012 Denis Roio <jaromil@dyne.org>
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#
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# This source code is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This source code is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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# Please refer to the GNU Public License for more details.
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#
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# You should have received a copy of the GNU Public License along with
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# this source code; if not, write to:
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# Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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# }}}
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# {{{ GLOBAL VARIABLES
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VERSION=1.3
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DATE="Nov/2012"
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TOMBEXEC=$0
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TOMBOPENEXEC="${TOMBEXEC}-open"
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typeset -a OLDARGS
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for arg in ${argv}; do OLDARGS+=($arg); done
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STEGHIDE=1
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MKTEMP=1
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MOUNTOPTS="rw,noatime,nodev"
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typeset -A global_opts
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typeset -A opts
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typeset -h username
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typeset -h _uid
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typeset -h _gid
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# Set a sensible PATH
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PATH=/sbin:/bin:/usr/sbin:/usr/bin
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[[ "$TOMBEXEC" =~ "^/usr/local" ]] && PATH="/usr/local/bin:/usr/local/sbin:$PATH"
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# PATH=/usr/bin:/usr/sbin:/bin:/sbin
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# }}}
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# {{{ HELPER FUNCTIONS
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# {{{ - Standard output message routines
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function _msg() {
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local command="print -P"
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local progname="$fg[magenta]${TOMBEXEC##*/}$reset_color"
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local message="$fg_bold[normal]$fg_no_bold[normal]${2}$reset_color"
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local -i returncode
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case "$1" in
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inline)
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command+=" -n"; pchars=" > "; pcolor="yellow"
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;;
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message)
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pchars=" . "; pcolor="white"; message="$fg_no_bold[$pcolor]${2}$reset_color"
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;;
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verbose)
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pchars="[D]"; pcolor="blue"
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;;
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success)
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pchars="(*)"; pcolor="green"; message="$fg_no_bold[$pcolor]${2}$reset_color"
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;;
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warning)
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pchars="[W]"; pcolor="yellow"; message="$fg_no_bold[$pcolor]${2}$reset_color"
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;;
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failure)
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pchars="[E]"; pcolor="red"; message="$fg_no_bold[$pcolor]${2}$reset_color"
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returncode=1
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;;
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*)
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pchars="[F]"; pcolor="red"
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message="Developer oops! Usage: _msg MESSAGE_TYPE \"MESSAGE_CONTENT\""
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returncode=127
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;;
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esac
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${=command} "${progname} $fg_bold[$pcolor]$pchars$reset_color ${message}$color[reset_color]" >&2
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return $returncode
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}
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function _message say()
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{
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local notice="message"
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[[ "$1" = "-n" ]] && shift && notice="inline"
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option_is_set -q || _msg "$notice" "$1"
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return 0
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}
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alias act="_message -n"
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function _verbose xxx()
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{
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option_is_set -D && _msg verbose "$1"
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return 0
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}
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function _success yes()
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{
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option_is_set -q || _msg success "$1"
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return 0
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}
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function _warning no()
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{
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option_is_set -q || _msg warning "$1"
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return 1
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}
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function _failure die()
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{
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typeset -i exitcode=${2:-1}
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option_is_set -q || _msg failure "$1"
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exit $exitcode
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}
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progress() {
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# $1 is "what is progressing"
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# $2 is "percentage"
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# $3 is (eventually blank) status
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# Example: if creating a tomb, it could be sth like
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# progress create 0 filling with random data
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# progress create 40 generating key
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# progress keygen 0 please move the mouse
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# progress keygen 30 please move the mouse
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# progress keygen 60 please move the mouse
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# progress keygen 100 key generated
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# progress create 80 please enter password
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# progress create 90 formatting the tomb
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# progress create 100 tomb created successfully
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if ! option_is_set --batch; then
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return
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fi
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print "[m][P][$1][$2][$3]" >&2
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}
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# }}}
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# {{{ - CHECK BINARY DEPENDENCIES
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check_bin() {
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# check for required programs
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for req in pinentry sudo gpg; do
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which $req >/dev/null || die "Cannot find $req. Please install it." 1
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done
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export PATH=/sbin:/usr/sbin:$PATH
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which cryptsetup > /dev/null && CRYPTSETUP=cryptsetup || die "Cryptsetup not found in $PATH." 1
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# which dd command to use
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which dcfldd > /dev/null && DD=dcfldd || DD=dd
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# which wipe command to use
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which wipe > /dev/null && WIPE="wipe -f -s" || WIPE="rm -f"
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# check for filesystem creation progs
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which mkfs.ext4 > /dev/null && \
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MKFS="mkfs.ext4 -q -F -j -L" || \
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MKFS="mkfs.ext3 -q -F -j -L"
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# check for mktemp
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which mktemp > /dev/null || MKTEMP=0
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# check for steghide
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which steghide > /dev/null || STEGHIDE=0
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# resize suite check bin!
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which e2fsck > /dev/null || die "Cannot find e2fsck. Please install it." 1
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which resize2fs > /dev/null || die "Cannot find resize2fs. Please install it." 1
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if which tomb-kdf-pbkdf2 &> /dev/null; then
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KDF_PBKDF2="tomb-kdf-pbkdf2"
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else
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local our_pbkdf2
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our_pbkdf2="$(dirname $(readlink -f $TOMBEXEC))/kdf/tomb-kdf-pbkdf2"
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if which $our_pbkdf2 &> /dev/null; then
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KDF_PBKDF2=$our_pbkdf2
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else
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KDF_PBKDF2=
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fi
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fi
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}
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# }}}
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# {{{ - "SAFE" FUNCTIONS
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# {{{ - Create a directory with caution
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_have_shm() {
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# Check availability of 1MB of SHM
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xxx "_have_shm 0 We need only 1 MB of RAM"
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[[ -k /dev/shm ]] || return 1
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local -i SHM RAM
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SHM=$(df -k -B 4K -a -t tmpfs /dev/shm | awk '/\/dev\/shm/ { print $4; }')
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(( $? )) && return 1
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xxx "_have_shm 1 SHM $SHM KB are available"
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RAM=$(awk '/MemFree/ { print $2 }' /proc/meminfo)
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xxx "_have_shm 2 RAM $RAM KB are free"
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(( $RAM >= 1024 )) && return 0
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xxx "_have_shm 3 RAM $RAM KB left only :("
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# Now we have more RAM than affected to SHM, so we can expect some for our little needs.
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# Does that work when SHM is disabled from kernel config?
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return 1
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}
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safe_dir() {
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# Try and create our temporary directory in RAM
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# Note that there's no warranty the underlying FS won't swap
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# every 5 seconds (e.g., ext3)
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local -i tries
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while (( $tries < 3 )) ; do
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tries+=1
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if _have_shm; then
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xxx "safe_dir creating directory in RAM"
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if (( $MKTEMP )); then
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mktemp -d /dev/shm/$1.$$.XXXXXXX
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else
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dir="/dev/shm/$1.$$.$RANDOM$RANDOM"
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mkdir -m 0700 -p "$dir"
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print "$dir"
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fi
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return 0
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else
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_warning "WARNING: we cannot ensure we're running in RAM."
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xxx "Wait a bit before retrying... (attempt $tries)"
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sync && sleep 0.5
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fi
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done
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_warning "WARNING: no RAM available for me to run safely."
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return 1
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}
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# }}}
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# {{{ - Provide a random filename in shared memory
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safe_filename() {
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_have_shm || die "No access to shared memory on this system, sorry."
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(( $MKTEMP )) && \
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mktemp -u /dev/shm/$1.$$.XXXXXXX || \
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print "/dev/shm/$1.$$.$RANDOM$RANDOM"
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}
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# }}}
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# {{{ - Check if swap is activated
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check_swap() {
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# Return 0 if NO swap is used, 1 if swap is used
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# Return 2 if swap(s) is(are) used, but ALL encrypted
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local swaps=$(awk '/partition/ { print $1 }' /proc/swaps 2>/dev/null)
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[[ -z "$swaps" ]] && return 0 # No swap partition is active
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no "An active swap partition is detected, this poses security risks."
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no "You can deactivate all swap partitions using the command:"
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no " swapoff -a"
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no "But if you want to proceed like this, use the -f (force) flag."
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die "Operation aborted."
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}
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# }}}
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# {{{ - Ask user for a password
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# we use pinentry now
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# comes from gpg project and is much more secure
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# it also conveniently uses the right toolkit
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ask_password() {
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# pinentry has no custom icon setting
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# so we need to temporary modify the gtk theme
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if [ -r /usr/local/share/themes/tomb/gtk-2.0-key/gtkrc ]; then
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GTK2_RC=/usr/local/share/themes/tomb/gtk-2.0-key/gtkrc
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elif [ -r /usr/share/themes/tomb/gtk-2.0-key/gtkrc ]; then
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GTK2_RC=/usr/share/themes/tomb/gtk-2.0-key/gtkrc
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fi
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title="Insert tomb password"
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if [ $2 ]; then title="$2"; fi
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output=`cat <<EOF | GTK2_RC_FILES=${GTK2_RC} pinentry 2>/dev/null | tail -n +7
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OPTION ttyname=$TTY
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OPTION lc-ctype=$LANG
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SETTITLE $title
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SETDESC $1
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SETPROMPT Password:
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GETPIN
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EOF`
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if [[ `tail -n1 <<<$output` =~ ERR ]]; then
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return 1
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fi
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head -n1 <<<$output | awk '/^D / { sub(/^D /, ""); print }'
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return 0
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}
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# }}}
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# {{{ - Drop privileges
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exec_as_user() {
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if ! [ $SUDO_USER ]; then
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exec $@[@]
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return $?
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fi
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xxx "exec_as_user '$SUDO_USER': ${(f)@}"
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sudo -u $SUDO_USER "${@[@]}"
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return $?
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}
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# }}}
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# {{{ - Escalate privileges
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check_priv() {
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# save original user
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username=$USER
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if [ $UID != 0 ]; then
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xxx "Using sudo for root execution of 'tomb ${(f)OLDARGS}'"
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# check if sudo has a timestamp active
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sudok=false
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# sudo -n ${TOMBEXEC} &> /dev/null
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if ! option_is_set --sudo-pwd; then
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if [ $? != 0 ]; then # if not then ask a password
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cat <<EOF | pinentry 2>/dev/null | awk '/^D / { sub(/^D /, ""); print }' | sudo -S -v
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OPTION ttyname=$TTY
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OPTION lc-ctype=$LANG
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SETTITLE Super user privileges required
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SETDESC Sudo execution of Tomb ${OLDARGS[@]}
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SETPROMPT Insert your USER password:
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GETPIN
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EOF
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fi
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else
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_verbose "Escalating privileges using sudo-pwd"
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sudo -S -v <<<`option_value --sudo-pwd`
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fi
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sudo "${TOMBEXEC}" "${(@)OLDARGS}" -U ${UID} -G ${GID}
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exit $?
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fi # are we root already
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return 0
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}
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# }}}
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check_command() {
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#generic checks; useful for interaction, to check if there are problems
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#before wasting user's time
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if ! option_is_set --ignore-swap && ! option_is_set -f; then
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if [[ $1 == 'create' || $1 == 'open' ]]; then
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if ! check_swap; then
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error "Swap activated. Disable it with swapoff, or use --ignore-swap"
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exit 1
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fi
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fi
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fi
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}
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usage() {
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cat <<EOF
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Syntax: tomb [options] command [file] [place]
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Commands:
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create create a new tomb FILE and its keys (needs size)
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open open an existing tomb FILE on PLACE
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list list all open tombs or the one called FILE
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close close the open tomb called FILE (or all)
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slam close tomb FILE and kill all pids using it
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passwd change the password of a tomb key FILE
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resize resize a tomb FILE (only bigger, needs size)
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EOF
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if [ "$STEGHIDE" = 1 ]; then
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cat <<EOF
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bury hide a tomb key FILE inside a jpeg PLACE
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exhume extract a tomb key FILE from a jpeg PLACE
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EOF
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fi
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cat <<EOF
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Options:
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-s size of the tomb file when creating/resizing one (in MB)
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-k path to the key to use for opening a tomb
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-n don't process the hooks found in tomb
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-o mount options used to open (default: rw,noatime,nodev)
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-f force operation (i.e. even if swap is active)
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-h print this help
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-v print version, license and list of available ciphers
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-q run quietly without printing informations
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-D print debugging information at runtime
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For more informations on Tomb read the manual: man tomb
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Please report bugs on <http://github.com/dyne/tomb/issues>.
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EOF
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}
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# }}}
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# {{{ - I18N FUNCTIONS
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generate_translatable_strings() {
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cat <<EOF
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# Tomb - The Crypto Undertaker.
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# Copyright (C) 2007-2012 Dyne.org Foundation
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# Denis Roio <jaromil@dyne.org>, 2012.
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#
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#, fuzzy
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msgid ""
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msgstr ""
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"Project-Id-Version: Tomb $VERSION\n"
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"PO-Revision-Date: `date`\n"
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"Last-Translator: Denis Roio <jaromil@dyne.org>\n"
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"Language-Team: Tomb developers <crypto@lists.dyne.org>\n"
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"MIME-Version: 1.0\n"
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"Content-Type: text/plain; charset=CHARSET\n"
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"Content-Transfer-Encoding: 8bit\n"
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#
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#: commandline help
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#
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msgid ""
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EOF
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usage | awk '
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{ print "\"" $0 "\"" }'
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cat <<EOF
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msgstr ""
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#
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# tomb internal messages
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#
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EOF
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cat $TOMBEXEC | awk '
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/(_verbose|xxx) ".*"$/ { sub( /^(_verbose|xxx)/ , "");
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print "#: _verbose"; print "msgid " $0; print "msgstr \"\"\n" }
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/(_success|yes) ".*"$/ { sub( /^(_success|yes)/ , "");
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print "#: _success"; print "msgid " $0; print "msgstr \"\"\n" }
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/(_warning|no) ".*"$/ { sub( /^(_warning|no)/ , "");
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print "#: _warning"; print "msgid " $0; print "msgstr \"\"\n" }
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/(_failure|die) ".*"$/ { sub( /^(_failure|die)/ , "");
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print "#: _failure"; print "msgid " $0; print "msgstr \"\"\n" }
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/(_message|say) ".*"$/ { sub( /^(_message|say)/ , "");
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print "#: _message"; print "msgid " $0; print "msgstr \"\"\n" }
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/(_message -n|act) ".*"$/ { sub( /^(_message -n|act)/ , "");
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print "#: _message -n"; print "msgid " $0; print "msgstr \"\"\n" }
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'
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}
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# }}}
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# {{{ - HELPERS FOR KEYS
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# {{{ - Encode Key
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encode_key() {
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tombkey=$1
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imagefile=$2
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file $tombkey | grep PGP > /dev/null
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if [ $? != 0 ]; then
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_warning "encode failed: $tombkey is not a tomb key"
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return 1
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fi
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file $imagefile | grep JPEG > /dev/null
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if [ $? != 0 ]; then
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_warning "encode failed: $imagefile is not a jpeg image"
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return 1
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fi
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_success "Encoding key $tombkey inside image $imagefile"
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_message "please choose a password for the encoding"
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# here user is prompted for key password
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for c in 1 2 3; do
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# 3 tries to write two times a matching password
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tombpass=`exec_as_user ${TOMBEXEC} askpass "Steg password for ${tombkey}"`
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tombpasstmp=$tombpass
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tombpass=`exec_as_user ${TOMBEXEC} askpass "Steg password for ${tombkey} (again)"`
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if [ "$tombpasstmp" = "$tombpass" ]; then
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break;
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fi
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unset tombpasstmp
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unset tombpass
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done
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if [ -z $tombpass ]; then
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_warning "passwords don't match, aborting operation."
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return 1
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fi
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awk '
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/^-----/ {next}
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/^Version/ {next}
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{print $0}' ${tombkey} \
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| steghide embed --embedfile - --coverfile ${imagefile} \
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-p ${tombpass} -z 9 -e serpent cbc
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if [ $? != 0 ]; then
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_warning "encoding error: steghide reports problems"
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res=1
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else
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_success "tomb key encoded succesfully into image ${imagefile}"
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res=0
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fi
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unset tombpass
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return $res
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}
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# }}}
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# {{{ - Decode Key
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decode_key() {
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tombname=$1
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imagefile=$2
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res=1
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file $imagefile | grep JPEG > /dev/null
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if [ $? != 0 ]; then
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_warning "encode failed: $imagefile is not a jpeg image"
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return 1
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fi
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keyfile=${tombname%%\.*}.tomb.key
|
|
if [[ -e "$keyfile" ]]; then
|
|
_warning "Key file $keyfile already exist."
|
|
return 1
|
|
fi
|
|
_message "Trying to exhume a key out of image $imagefile"
|
|
for c in 1 2 3; do
|
|
if [ $c = 1 ]; then
|
|
tombpass=`exec_as_user ${TOMBEXEC} askpass "Steg password for ${keyfile}"`
|
|
else
|
|
tombpass=`exec_as_user ${TOMBEXEC} askpass "Steg password for $keyfile (retry $c)"`
|
|
fi
|
|
steghide extract -sf ${imagefile} -p ${tombpass} -xf - \
|
|
| awk '
|
|
BEGIN {
|
|
print "-----BEGIN PGP MESSAGE-----"
|
|
}
|
|
{ print $0 }
|
|
END {
|
|
print "-----END PGP MESSAGE-----"
|
|
}' > ${keyfile}
|
|
|
|
if [ "`cat ${keyfile} | wc -l`" != "3" ]; then
|
|
_success "${keyfile} succesfully decoded"
|
|
res=0
|
|
break;
|
|
fi
|
|
done
|
|
|
|
unset tombpass
|
|
|
|
if [ $res != 0 ]; then
|
|
_warning "nothing found."
|
|
fi
|
|
|
|
return $res
|
|
}
|
|
|
|
list_gnupg_ciphers() {
|
|
# prints an array of ciphers available in gnupg (to encrypt keys)
|
|
# prints an error if GnuPG is not found
|
|
which gpg > /dev/null || die "gpg (GnuPG) is not found, Tomb cannot function without it."
|
|
|
|
ciphers=(`gpg --version | awk '
|
|
BEGIN { ciphers=0 }
|
|
/^Cipher:/ { gsub(/,/,""); sub(/^Cipher:/,""); print; ciphers=1; next }
|
|
/^Hash:/ { ciphers=0 }
|
|
{ if(ciphers==0) { next } else { gsub(/,/,""); print; } }
|
|
'`)
|
|
echo " ${ciphers}"
|
|
return 1
|
|
}
|
|
|
|
# }}}
|
|
# }}}
|
|
# {{{ - HOOK HELPERS
|
|
# {{{ - Execute Bind Hooks
|
|
|
|
exec_safe_bind_hooks() {
|
|
if [[ -n ${(k)opts[-o]} ]]; then
|
|
MOUNTOPTS=${opts[-o]}
|
|
fi
|
|
local MOUNTPOINT="${1}"
|
|
local ME=${SUDO_USER:-$(whoami)}
|
|
local HOME=$(awk -v a="$ME" -F ':' '{if ($1 == a) print $6}' /etc/passwd 2>/dev/null)
|
|
if [ $? -ne 0 ]; then
|
|
_warning "how pitiful! A tomb, and no HOME"
|
|
return 1
|
|
fi
|
|
if [ -z "$MOUNTPOINT" -o ! -d "$MOUNTPOINT" ]; then
|
|
_warning "cannot exec bind hooks without a mounted tomb."
|
|
return 1
|
|
fi
|
|
if ! [ -r "$MOUNTPOINT/bind-hooks" ]; then
|
|
xxx "bind-hooks not found in $MOUNTPOINT"
|
|
return 1
|
|
fi
|
|
typeset -al mounted
|
|
typeset -Al maps
|
|
maps=($(<"$MOUNTPOINT/bind-hooks"))
|
|
for dir in ${(k)maps}; do
|
|
if [ "${dir[1]}" = "/" -o "${dir[1,2]}" = ".." ]; then
|
|
_warning "bind-hooks map format: local/to/tomb local/to/\$HOME"
|
|
continue
|
|
fi
|
|
if [ "${${maps[$dir]}[1]}" = "/" -o "${${maps[$dir]}[1,2]}" = ".." ]; then
|
|
_warning "bind-hooks map format: local/to/tomb local/to/\$HOME. Rolling back"
|
|
for dir in ${mounted}; do umount $dir; done
|
|
return 1
|
|
fi
|
|
if [ ! -r "$HOME/${maps[$dir]}" ]; then
|
|
_warning "bind-hook target not existent, skipping $HOME/${maps[$dir]}"
|
|
elif [ ! -r "$MOUNTPOINT/$dir" ]; then
|
|
_warning "bind-hook source not found in tomb, skipping ${MOUNTPOINT}/${dir}"
|
|
else
|
|
mount -o bind,$MOUNTOPTS $MOUNTPOINT/$dir $HOME/${maps[$dir]}
|
|
mounted+=("$HOME/${maps[$dir]}")
|
|
fi
|
|
done
|
|
}
|
|
|
|
# }}}
|
|
# {{{ - POST-MOUNT HOOKS
|
|
exec_safe_post_hooks() {
|
|
local mnt=$1 # first argument is where the tomb is mounted
|
|
local ME=${SUDO_USER:-$(whoami)}
|
|
if ! [ -x ${mnt}/post-hooks ]; then return; fi
|
|
# if 'post-hooks' is found inside the tomb, check it: if it is an
|
|
# executable, launch it as a user this might need a dialog for
|
|
# security on what is being run, however we expect you know well
|
|
# what is inside your tomb. this feature opens the possibility to
|
|
# make encrypted executables.
|
|
cat ${mnt}/post-hooks | head -n1 | grep '^#!/'
|
|
if [ $? = 0 ]; then
|
|
_success "post hooks found, executing as user $SUDO_USER"
|
|
exec_as_user ${mnt}/post-hooks $2
|
|
fi
|
|
}
|
|
# }}}
|
|
# }}}
|
|
|
|
# }}}
|
|
# {{{ TOMB SUB-COMMANDS
|
|
|
|
# {{{ - Create
|
|
# $1 is the tomb path
|
|
|
|
create_tomb() {
|
|
_message "Commanded to create tomb $1"
|
|
|
|
# we run as root, but remember the original uid:gid to drop
|
|
# privileges when not needed anymore
|
|
if option_is_set -U; then _uid="`option_value -U`"; fi
|
|
if option_is_set -G; then _gid="`option_value -G`"; fi
|
|
|
|
# if swap is on, we remind the user about possible data leaks to disk
|
|
if ! option_is_set -f && ! option_is_set --ignore-swap; then check_swap; fi
|
|
|
|
if ! [ $1 ]; then
|
|
_warning "no tomb name specified for creation"
|
|
return 1
|
|
fi
|
|
|
|
# the encryption cipher for a tomb can be set at creation using -o
|
|
if ! option_is_set -o; then
|
|
create_cipher="`option_value -o`"
|
|
else
|
|
create_cipher=aes-cbc-essiv:sha256
|
|
fi
|
|
|
|
tombfile=`basename $1`
|
|
tombdir=`dirname $1`
|
|
# make sure the file has a .tomb extension
|
|
tombname=${tombfile%%\.*}
|
|
tombfile=${tombname}.tomb
|
|
|
|
|
|
# require the specification of the size of the tomb (-s) in MB
|
|
tombsize="`option_value -s`"
|
|
|
|
[ $tombsize ] || die "Size argument missing, use --size"
|
|
|
|
[[ $tombsize != <-> ]] && die "Size argument is not an integer"
|
|
|
|
if [ -e ${tombdir}/${tombfile} ]; then
|
|
_warning "tomb exists already. I'm not digging here:"
|
|
ls -lh ${tombdir}/${tombfile}
|
|
return 1
|
|
fi
|
|
|
|
# check if the key is set manually then use the one existing
|
|
if option_is_set -k; then
|
|
tombkey="`option_value -k`"
|
|
if [ -e "${tombkey}" ]; then
|
|
_message "Use an existing key to lock the new tomb:"
|
|
ls -lh ${tombkey}
|
|
fi
|
|
|
|
# this does a check on the file header, virtuosism by hellekin
|
|
# [[ `file =(awk '/^-+BEGIN/,0' $1) -bi` =~ application/pgp ]]
|
|
if ! is_valid_key ${tombkey}; then
|
|
_warning "The key seems invalid, the application/pgp header is missing"
|
|
die "Operation aborted."
|
|
fi
|
|
else
|
|
tombkey="new" # generate it new later
|
|
fi
|
|
|
|
_success "Creating a new tomb in ${tombdir}/${tombfile}"
|
|
|
|
if [ -z $tombsize ]; then
|
|
_message "No size specified, summoning the Tomb Undertaker to guide us in the creation."
|
|
"$TOMBOPENEXEC" &
|
|
wait $!
|
|
return 0
|
|
fi
|
|
|
|
tombsize_4k=`expr $tombsize \* 1024 / 4`
|
|
_message "Generating ${tombfile} of ${tombsize}Mb (${tombsize_4k} blocks of 4Kb)"
|
|
# we will first touch the file and set permissions: this way, even if interrupted, permissions are right
|
|
touch ${tombdir}/${tombfile}
|
|
chown ${_uid}:${_gid} "${tombdir}/${tombfile}"
|
|
chmod 0600 "${tombdir}/${tombfile}"
|
|
$DD if=/dev/urandom bs=4k count=${tombsize_4k} of=${tombdir}/${tombfile}
|
|
|
|
if [ $? = 0 -a -e ${tombdir}/${tombfile} ]; then
|
|
_success "OK: `ls -lh ${tombdir}/${tombfile}`"
|
|
else
|
|
die "Error creating the tomb ${tombdir}/${tombfile}, operation aborted."
|
|
fi
|
|
|
|
nstloop=`losetup -f` # get the number for next loopback device
|
|
losetup -f ${tombdir}/${tombfile} # allocates the next loopback for our file
|
|
|
|
# create the keyfile in tmpfs so that we leave less traces in RAM
|
|
keytmp=`safe_dir tomb`
|
|
(( $? )) && die "error creating temp dir"
|
|
xxx "safe_dir at $keytmp"
|
|
|
|
#rm -f $keytmp
|
|
# ?????? creo, cancello e ricreo ??????
|
|
#mkdir -p $keytmp
|
|
mount tmpfs "${keytmp}" -t tmpfs -o size=1m
|
|
if [ $? != 0 ]; then
|
|
_warning "cannot mount tmpfs filesystem in volatile memory"
|
|
losetup -d $nstloop
|
|
rm -r "${keytmp}"
|
|
die "operation aborted."
|
|
fi
|
|
_message "Generating secret key..."
|
|
_message "this operation takes time, keep using this computer on other tasks,"
|
|
_message "once done you will be asked to choose a password for your tomb."
|
|
_message "To make it faster you can move the mouse around"
|
|
touch ${keytmp}/tomb.tmp
|
|
chmod 0600 ${keytmp}/tomb.tmp
|
|
random_source=/dev/random
|
|
if option_is_set --use-urandom; then
|
|
random_source=/dev/urandom
|
|
fi
|
|
if [[ $DD = "dcfldd" ]]; then
|
|
$DD bs=1 count=256 if=$random_source of=${keytmp}/tomb.tmp statusinterval=1
|
|
else
|
|
$DD bs=1 count=256 if=$random_source of=${keytmp}/tomb.tmp
|
|
fi
|
|
if ! [ -r ${keytmp}/tomb.tmp ]; then
|
|
_warning "cannot generate encryption key"
|
|
umount ${keytmp}
|
|
losetup -d $nstloop
|
|
rm -r $keytmp
|
|
die "operation aborted."
|
|
fi
|
|
|
|
_success "Setup your secret key file ${tombkey}"
|
|
if [ "$tombkey" = "new" ]; then
|
|
tombkey="${tombdir}/${tombfile}.key"
|
|
touch ${tombkey}
|
|
chown ${_uid}:${_gid} ${tombkey}
|
|
chmod 0600 ${tombkey}
|
|
gen_key ${keytmp}/tomb.tmp > ${tombkey}
|
|
fi
|
|
|
|
if ! is_valid_key ${tombkey}; then
|
|
_warning "The key does not seem to be valid"
|
|
fi
|
|
|
|
# if [ $? != 0 ]; then
|
|
# _warning "setting password failed: gnupg returns 2"
|
|
# umount ${keytmp}
|
|
# losetup -d $nstloop
|
|
# rm -r $keytmp
|
|
# exit 1
|
|
# fi
|
|
|
|
_message "formatting Luks mapped device"
|
|
# we use aes-cbc-essiv with sha256
|
|
# for security, performance and compatibility
|
|
# XXX: More for compatibility then, because xts-plain is better nowadays.
|
|
cryptsetup --batch-mode \
|
|
--cipher ${create_cipher} --key-size 256 \
|
|
luksFormat ${nstloop} ${keytmp}/tomb.tmp
|
|
|
|
if ! [ $? = 0 ]; then
|
|
umount ${keytmp}
|
|
losetup -d $nstloop
|
|
rm -r $keytmp
|
|
rm ${tombdir}/${tombfile}
|
|
die "operation aborted." 0
|
|
fi
|
|
|
|
cryptsetup --key-file ${keytmp}/tomb.tmp --cipher ${create_cipher}:sha256 luksOpen ${nstloop} tomb.tmp
|
|
${=WIPE} ${keytmp}/tomb.tmp
|
|
umount ${keytmp}
|
|
rm -r ${keytmp}
|
|
|
|
# cryptsetup luksDump ${nstloop}
|
|
|
|
_message "formatting your Tomb with Ext3/Ext4 filesystem"
|
|
${=MKFS} ${tombname} /dev/mapper/tomb.tmp
|
|
|
|
if [ $? != 0 ]; then
|
|
_warning "Tomb format returned an error:"
|
|
_warning "your tomb ${tombfile} may be corrupted."
|
|
fi
|
|
|
|
sync
|
|
|
|
cryptsetup luksClose tomb.tmp
|
|
losetup -d ${nstloop}
|
|
|
|
_message "done creating $tombname encrypted storage (using Luks dm-crypt ${create_cipher}:sha256)"
|
|
_success "Your tomb is ready in ${tombdir}/${tombfile} and secured with key ${tombkey}"
|
|
}
|
|
|
|
# This is a new way to create tombs which dissects the whole create_tomb() into 3 clear steps:
|
|
# - dig a .tomb (the large file) using /dev/random (takes some minutes at least)
|
|
# - forge a .key (the small file) using /dev/urandom (good entropy needed)
|
|
# - lock the .tomb file with the key, binding the key to the tomb (requires dm_crypt format)
|
|
|
|
forge_key() {
|
|
_message "Commanded to forge key $1"
|
|
|
|
# we run as root, but remember the original uid:gid
|
|
# to set the permissions as readable for the calling user
|
|
if option_is_set -U; then _uid="`option_value -U`"; fi
|
|
if option_is_set -G; then _gid="`option_value -G`"; fi
|
|
|
|
if ! [ $1 ]; then
|
|
_warning "no key name specified for creation"
|
|
return 1
|
|
fi
|
|
|
|
# if swap is on, we remind the user about possible data leaks to disk
|
|
if ! option_is_set -f && ! option_is_set --ignore-swap; then check_swap; fi
|
|
|
|
# the encryption cipher for a tomb can be set at creation using -o
|
|
if ! option_is_set -o; then
|
|
create_cipher="`option_value -o`"
|
|
else
|
|
create_cipher=aes-cbc-essiv:sha256
|
|
fi
|
|
|
|
|
|
# create the keyfile in tmpfs so that we leave less traces in RAM
|
|
keytmp=`safe_dir tomb`
|
|
(( $? )) && die "error creating temp dir"
|
|
xxx "safe_dir at $keytmp"
|
|
|
|
mount tmpfs "${keytmp}" -t tmpfs -o size=1m
|
|
if [ $? != 0 ]; then
|
|
_warning "cannot mount tmpfs filesystem in volatile memory"
|
|
rm -r "${keytmp}"
|
|
die "operation aborted."
|
|
fi
|
|
|
|
tombkey="$1"
|
|
|
|
_message "this operation takes time, keep using this computer on other tasks,"
|
|
_message "once done you will be asked to choose a password for your tomb."
|
|
_message "To make it faster you can move the mouse around."
|
|
_message "If you are on a server, you can use an Entropy Generation Daemon."
|
|
|
|
touch ${keytmp}/tomb.tmp
|
|
chmod 0600 ${keytmp}/tomb.tmp
|
|
random_source=/dev/random
|
|
if option_is_set --use-urandom; then
|
|
random_source=/dev/urandom
|
|
fi
|
|
|
|
if [[ $DD = "dcfldd" ]]; then
|
|
$DD bs=1 count=256 if=$random_source of=${keytmp}/tomb.tmp statusinterval=1
|
|
else
|
|
$DD bs=1 count=256 if=$random_source of=${keytmp}/tomb.tmp
|
|
fi
|
|
if ! [ -r ${keytmp}/tomb.tmp ]; then
|
|
_warning "cannot generate encryption key"
|
|
umount ${keytmp}
|
|
rm -r $keytmp
|
|
die "operation aborted."
|
|
fi
|
|
|
|
_success "Choose the password of your key: ${tombkey}"
|
|
_message "(you can also change it later using 'tomb passwd')"
|
|
touch ${tombkey}
|
|
chown ${_uid}:${_gid} ${tombkey}
|
|
chmod 0600 ${tombkey}
|
|
|
|
tombname="$tombkey"
|
|
# the gen_key() function takes care of the new key's encryption
|
|
gen_key ${keytmp}/tomb.tmp > ${tombkey}
|
|
|
|
# this does a check on the file header, virtuosism by hellekin
|
|
# [[ `file =(awk '/^-+BEGIN/,0' $1) -bi` =~ application/pgp ]]
|
|
if ! is_valid_key ${tombkey}; then
|
|
_warning "The key does not seem to be valid"
|
|
_warning "Dumping contents to screen:"
|
|
cat ${tombkey}
|
|
_warning "--"
|
|
umount ${keytmp}
|
|
rm -r $keytmp
|
|
die "operation aborted."
|
|
fi
|
|
|
|
${=WIPE} ${keytmp}/tomb.tmp # no need really, but anyway
|
|
umount ${keytmp}
|
|
rm -r ${keytmp}
|
|
|
|
chown ${_uid}:${_gid} ${tombkey}
|
|
|
|
_message "done forging $tombkey"
|
|
_success "Your key is ready:"
|
|
ls -lh ${tombkey}
|
|
}
|
|
|
|
# dig a tomb
|
|
dig_tomb() {
|
|
_message "Commanded to dig tomb $1"
|
|
|
|
# if swap is on, we remind the user about possible data leaks to disk
|
|
if ! option_is_set -f && ! option_is_set --ignore-swap; then check_swap; fi
|
|
|
|
if ! [ $1 ]; then
|
|
_warning "no tomb name specified for creation"
|
|
return 1
|
|
fi
|
|
|
|
|
|
tombfile=`basename $1`
|
|
tombdir=`dirname $1`
|
|
# make sure the file has a .tomb extension
|
|
tombname=${tombfile%%\.*}
|
|
tombfile=${tombname}.tomb
|
|
|
|
|
|
# require the specification of the size of the tomb (-s) in MB
|
|
tombsize="`option_value -s`"
|
|
|
|
[ $tombsize ] || die "Size argument missing, use --size"
|
|
|
|
[[ $tombsize != <-> ]] && die "Size argument is not an integer"
|
|
|
|
if [ -e ${tombdir}/${tombfile} ]; then
|
|
_warning "A tomb exists already. I'm not digging here:"
|
|
_warning " `ls -lh ${tombdir}/${tombfile}`"
|
|
return 1
|
|
fi
|
|
|
|
_success "Creating a new tomb in ${tombdir}/${tombfile}"
|
|
|
|
|
|
tombsize_4k=`expr $tombsize \* 1024 / 4`
|
|
_message "Generating ${tombfile} of ${tombsize}Mb (${tombsize_4k} blocks of 4Kb)"
|
|
# we will first touch the file and set permissions: this way, even if interrupted, permissions are right
|
|
touch ${tombdir}/${tombfile}
|
|
chmod 0600 "${tombdir}/${tombfile}"
|
|
$DD if=/dev/urandom bs=4k count=${tombsize_4k} of=${tombdir}/${tombfile}
|
|
|
|
if [ $? = 0 -a -e ${tombdir}/${tombfile} ]; then
|
|
_message " `ls -lh ${tombdir}/${tombfile}`"
|
|
else
|
|
die "Error creating the tomb ${tombdir}/${tombfile}, operation aborted."
|
|
fi
|
|
|
|
_success "Done digging $tombname"
|
|
_message "your tomb is not yet ready, you need to forge a key and lock it:"
|
|
_message "tomb forge ${tombname}.tomb.key"
|
|
_message "tomb lock ${tombname}.tomb ${tombname}.tomb.key"
|
|
}
|
|
|
|
|
|
#internal use
|
|
#$1 is the keyfile we are checking
|
|
is_valid_key() {
|
|
[[ `file =(awk '/^-+BEGIN/,0' $1) -bi` =~ application/pgp ]]
|
|
return $?
|
|
}
|
|
#internal use
|
|
#$1 is the password, $2 is the keyfile
|
|
#will output the lukskey
|
|
get_lukskey() {
|
|
local tombpass=$1
|
|
keyfile=$2
|
|
firstline=`head -n1 $keyfile`
|
|
if [[ $firstline =~ '^_KDF_' ]]; then
|
|
_verbose "KDF: `cut -d_ -f 3 <<<$firstline`"
|
|
case `cut -d_ -f 3 <<<$firstline` in
|
|
pbkdf2sha1)
|
|
if [[ -z $KDF_PBKDF2 ]]; then
|
|
die "The tomb use kdf method 'pbkdf2', which is unsupported on your system"
|
|
fi
|
|
pbkdf2_param=`cut -d_ -f 4- <<<$firstline | tr '_' ' '`
|
|
tombpass=$(${KDF_PBKDF2} ${=pbkdf2_param} 2> /dev/null <<<$tombpass)
|
|
;;
|
|
*)
|
|
_failure "No suitable program for KDF `cut -f 3 <<<$firstline`"
|
|
unset tombpass
|
|
return 1
|
|
;;
|
|
esac
|
|
fi
|
|
gpg --batch --passphrase-fd 0 --no-tty --no-options \
|
|
-d "${keyfile}" 2> /dev/null <<< ${tombpass}
|
|
ret=$?
|
|
unset tombpass
|
|
return $ret
|
|
}
|
|
|
|
# internal use
|
|
# $1 the lukskey to encrypt
|
|
# honored options: --kdf --tomb-pwd
|
|
gen_key() {
|
|
local lukskey=$1
|
|
# here user is prompted for key password
|
|
local tombpass=""
|
|
local tombpasstmp=""
|
|
if ! option_is_set --tomb-pwd; then
|
|
while true; do
|
|
# 3 tries to write two times a matching password
|
|
tombpass=`exec_as_user ${TOMBEXEC} askpass "Secure key for ${tombname}"`
|
|
if [[ $? != 0 ]]; then
|
|
die "User aborted"
|
|
fi
|
|
if [ -z $tombpass ]; then
|
|
_warning "you set empty password, which is not possible"
|
|
continue
|
|
fi
|
|
tombpasstmp=$tombpass
|
|
tombpass=`exec_as_user ${TOMBEXEC} askpass "Secure key for ${tombname} (again)"`
|
|
if [[ $? != 0 ]]; then
|
|
die "User aborted"
|
|
fi
|
|
if [ "$tombpasstmp" = "$tombpass" ]; then
|
|
break;
|
|
fi
|
|
unset tombpasstmp
|
|
unset tombpass
|
|
done
|
|
else
|
|
tombpass=`option_value --tomb-pwd`
|
|
fi
|
|
|
|
|
|
# KDF is a new key strenghtening technique against brute forcing
|
|
# see: https://github.com/dyne/Tomb/issues/82
|
|
_verbose "KDF method chosen is: '`option_value --kdf`'"
|
|
kdf_method=$(cut -d: -f1 <<<`option_value --kdf` )
|
|
case $kdf_method in
|
|
pbkdf2)
|
|
if [[ -z $KDF_PBKDF2 ]]; then
|
|
die "The tomb use kdf method 'pbkdf2', which is unsupported on your system"
|
|
fi
|
|
# --kdf takes one parameter: iter time (on present machine) in seconds
|
|
seconds=$(cut -d: -f2 -s <<<`option_value --kdf`)
|
|
if [[ -z $seconds ]]; then
|
|
seconds=1
|
|
fi
|
|
local -i microseconds
|
|
microseconds=$((seconds*1000000))
|
|
_verbose "Microseconds: $microseconds"
|
|
pbkdf2_salt=`${KDF_PBKDF2}-gensalt`
|
|
pbkdf2_iter=`${KDF_PBKDF2}-getiter $microseconds`
|
|
# We use a length of 64bytes = 512bits (more than needed!?)
|
|
tombpass=`${KDF_PBKDF2} $pbkdf2_salt $pbkdf2_iter 64 <<<"${tombpass}"`
|
|
|
|
header="_KDF_pbkdf2sha1_${pbkdf2_salt}_${pbkdf2_iter}_64\n"
|
|
;;
|
|
""|null)
|
|
|
|
header=""
|
|
;;
|
|
*)
|
|
_warning "KDF method non recognized"
|
|
return 1
|
|
header=""
|
|
;;
|
|
esac
|
|
echo -n $header
|
|
gpg --openpgp --batch --no-options --no-tty --passphrase-fd 0 2>/dev/null \
|
|
-o - -c -a ${lukskey} <<< "${tombpass}"
|
|
|
|
unset tombpass
|
|
}
|
|
|
|
# }}}
|
|
# {{{ - Open
|
|
|
|
# $1 = tombfile $2(optional) = mountpoint
|
|
mount_tomb() {
|
|
_message "Commanded to open tomb $1"
|
|
|
|
if ! option_is_set -f && ! option_is_set --ignore-swap; then check_swap; fi
|
|
|
|
if ! [ ${1} ]; then
|
|
_warning "no tomb name specified for creation"
|
|
return 1
|
|
fi
|
|
|
|
# running as root, remembering the uid:gid
|
|
if option_is_set -U; then _uid="`option_value -U`"; fi
|
|
if option_is_set -G; then _gid="`option_value -G`"; fi
|
|
|
|
# set up variables to be used
|
|
# the full path is made with $tombdir/$tombfile
|
|
|
|
local tombkey
|
|
local tombfile
|
|
local tombdir
|
|
local tombname
|
|
tombfile=`basename ${1}`
|
|
tombdir=`dirname ${1}`
|
|
# check file type (if its a Luks fs)
|
|
file ${tombdir}/${tombfile} | grep -i 'luks encrypted file' 2>&1 >/dev/null
|
|
if [ $? != 0 ]; then
|
|
_warning "$1 is not a valid tomb file, operation aborted"
|
|
return 1
|
|
fi
|
|
tombname=${tombfile%%\.*}
|
|
xxx "tomb found: ${tombdir}/${tombfile}"
|
|
|
|
if option_is_set -k ; then
|
|
if [[ "`option_value -k`" == "-" ]]; then
|
|
# take key from stdin
|
|
local tombkeydir
|
|
tombkeydir=`safe_dir`
|
|
cat > ${tombkeydir}/stdin.tmp
|
|
tombkey=${tombkeydir}/stdin.tmp
|
|
else
|
|
# take key from a file
|
|
tombkey=`option_value -k`
|
|
fi
|
|
else
|
|
# guess key as lying besides the tomb
|
|
tombkey=${tombdir}/${tombfile}.key
|
|
fi
|
|
if ! [ -r ${tombkey} ]; then
|
|
_warning "key file not found: ${tombkey}"
|
|
_warning "operation aborted."
|
|
return 1
|
|
fi
|
|
|
|
if ! [ $2 ]; then
|
|
tombmount=/media/${tombfile}
|
|
_message "mountpoint not specified, using default: $tombmount"
|
|
elif ! [ -x $2 ]; then
|
|
_warning "mountpoint $2 doesn't exist, operation aborted."
|
|
return 1
|
|
else
|
|
tombmount=$2
|
|
fi
|
|
|
|
# check if its already open
|
|
mount -l | grep "${tombfile}.*\[$tombname\]$" 2>&1 > /dev/null
|
|
if [ $? = 0 ]; then
|
|
_warning "$tombname is already open on $tombmount"
|
|
_message "here below its status is reported:"
|
|
list_tombs ${tombname}
|
|
return 1
|
|
fi
|
|
|
|
_success "Opening $tombfile on $tombmount"
|
|
|
|
# we need root from here on
|
|
mkdir -p $tombmount
|
|
|
|
nstloop=`losetup -f`
|
|
if [ $? = 255 ]; then
|
|
die "too many tomb opened. Please close any of them to open another tomb"
|
|
fi
|
|
losetup -f ${tombdir}/${tombfile}
|
|
|
|
_message "check for a valid LUKS encrypted device"
|
|
cryptsetup isLuks ${nstloop}
|
|
if [ $? != 0 ]; then
|
|
# is it a LUKS encrypted nest? see cryptsetup(1)
|
|
_warning "$tombfile is not a valid Luks encrypted storage file"
|
|
$norm || rmdir $tombmount 2>/dev/null
|
|
return 1
|
|
fi
|
|
|
|
tombdump=(`cryptsetup luksDump ${nstloop} | awk '
|
|
/^Cipher name/ {print $3}
|
|
/^Cipher mode/ {print $3}
|
|
/^Hash spec/ {print $3}'`)
|
|
say "cipher is \"$tombdump[1]\" mode \"$tombdump[2]\" hash \"$tombdump[3]\""
|
|
|
|
|
|
# save date of mount in minutes since 1970
|
|
mapdate=`date +%s`
|
|
|
|
|
|
mapper="tomb.${tombname}.${mapdate}.`basename $nstloop`"
|
|
keyname=`basename $tombkey | cut -d. -f1`
|
|
|
|
_warning "Password is required for key ${keyname}"
|
|
for c in 1 2 3; do
|
|
if ! option_is_set --tomb-pwd; then
|
|
tombpass=`exec_as_user ${TOMBEXEC} askpass "Open tomb ${keyname}"`
|
|
if [[ $? != 0 ]]; then
|
|
die "User aborted"
|
|
fi
|
|
else
|
|
tombpass=`option_value --tomb-pwd`
|
|
fi
|
|
get_lukskey "${tombpass}" ${tombkey} | \
|
|
cryptsetup --key-file - luksOpen ${nstloop} ${mapper}
|
|
local ret=$?
|
|
unset tombpass
|
|
if [[ $ret != 0 ]]; then
|
|
if [[ $c = 3 ]] || option_is_set --tomb-pwd; then
|
|
die "Wrong password: aborting"
|
|
fi
|
|
continue
|
|
fi
|
|
|
|
# if key was from stdin delete temp file and dir
|
|
if [ $tombkeydir ]; then
|
|
${=WIPE} ${tombkey}
|
|
rmdir $tombkeydir
|
|
fi
|
|
|
|
# if key was from stdin delete temp file and dir
|
|
if [ $tombkeydir ]; then
|
|
${WIPE[@]} ${tombkey}
|
|
rmdir $tombkeydir
|
|
fi
|
|
|
|
if [ -r /dev/mapper/${mapper} ]; then
|
|
break; # password was correct
|
|
fi
|
|
done
|
|
|
|
if ! [ -r /dev/mapper/${mapper} ]; then
|
|
losetup -d ${nstloop}
|
|
$norm || rmdir ${tombmount} 2>/dev/null
|
|
die "failure mounting the encrypted file"
|
|
fi
|
|
|
|
# array: [ cipher, keysize, loopdevice ]
|
|
tombstat=(`cryptsetup status ${mapper} | awk '
|
|
/cipher:/ {print $2}
|
|
/keysize:/ {print $2}
|
|
/device:/ {print $2}'`)
|
|
yes "Success unlocking tomb $tombname"
|
|
xxx "key size is $tombstat[2] for cipher $tombstat[1]"
|
|
|
|
_message "checking filesystem via $tombstat[3]"
|
|
fsck -p -C0 /dev/mapper/${mapper}
|
|
xxx "tomb engraved as $tombname"
|
|
tune2fs -L ${tombname} /dev/mapper/${mapper} > /dev/null
|
|
|
|
mount -o $MOUNTOPTS /dev/mapper/${mapper} ${tombmount}
|
|
|
|
chown ${_uid}:${_gid} ${tombmount}
|
|
chmod 0750 ${tombmount}
|
|
|
|
_success "Success opening $tombfile on $tombmount"
|
|
if ! option_is_set -n ; then
|
|
exec_safe_bind_hooks ${tombmount}
|
|
exec_safe_post_hooks ${tombmount} open
|
|
fi
|
|
return 0
|
|
}
|
|
|
|
# }}}
|
|
# {{{ - Close
|
|
# {{{ - Slam the door
|
|
# Kill all processes using the tomb
|
|
slam_tomb() {
|
|
# $1 = tomb mount point
|
|
if [[ -z `fuser -m "$1" 2> /dev/null` ]]; then
|
|
return 0
|
|
fi
|
|
#Note: shells are NOT killed by INT or TERM, but they are killed by HUP
|
|
for s in TERM HUP KILL; do
|
|
xxx "Sending $s to processes inside the tomb:"
|
|
if option_is_set -D; then
|
|
ps -fp `fuser -m /media/a.tomb 2> /dev/null`|
|
|
while read line; do
|
|
xxx $line
|
|
done
|
|
fi
|
|
fuser -s -m "$1" -k -M -$s
|
|
if [[ -z `fuser -m "$1" 2> /dev/null` ]]; then
|
|
return 0
|
|
fi
|
|
if ! option_is_set -f; then
|
|
sleep 3
|
|
fi
|
|
done
|
|
return 1
|
|
}
|
|
# }}}
|
|
# {{{ - Unmount Tomb
|
|
umount_tomb() {
|
|
local tombs how_many_tombs
|
|
local pathmap mapper tombname tombmount loopdev
|
|
local ans pidk pname
|
|
|
|
if ! [ $1 ]; then
|
|
tombs=`find /dev/mapper -name 'tomb.*'`
|
|
how_many_tombs=`wc -w <<< "$tombs"`
|
|
if [[ "$how_many_tombs" == "0" ]]; then
|
|
_warning "There is no open tomb to be closed"
|
|
return 1
|
|
elif [[ "$how_many_tombs" == "1" ]]; then
|
|
#mapper=`find /dev/mapper -name 'tomb.*'`
|
|
xxx "closing mapper $tombs"
|
|
umount_tomb ${tombs}
|
|
return 1
|
|
else
|
|
_warning "Too many tombs mounted, please specify which to unmount:"
|
|
ls /dev/mapper/tomb.*
|
|
_warning "or issue the command 'tomb close all' to clos'em all."
|
|
return 1
|
|
fi
|
|
fi
|
|
|
|
if [ "$1" = "all" ]; then
|
|
tombs=`find /dev/mapper -name 'tomb.*'`
|
|
if ! [ $tombs ]; then
|
|
_success "Tombs are all closed, cemetery is quiet."
|
|
return 0
|
|
fi
|
|
for t in ${(f)tombs}; do
|
|
umount_tomb ${t}
|
|
done
|
|
return 0
|
|
fi
|
|
|
|
# tomb close argument deduction
|
|
pathmap=`dirname "$1"`
|
|
|
|
if [ "${pathmap}" = "/dev/mapper" ]; then
|
|
mapper="$1" # argument is the mapper (or none which autofills mapper)
|
|
tombname="`print $mapper | cut -d. -f2`"
|
|
tombmount=`mount -l | \
|
|
awk -vtomb="[$tombname]" '/^\/dev\/mapper\/tomb/ { if($7==tomb) print $3 } '`
|
|
elif [ "$pathmap" = "." ]; then
|
|
tombname="$1" # argument is the name
|
|
mapper=`mount -l | \
|
|
awk -vtomb="[$tombname]" '/^\/dev\/mapper\/tomb/ { if($7==tomb) print $1 } '`
|
|
tombmount=`mount -l | \
|
|
awk -vtomb="[$tombname]" '/^\/dev\/mapper\/tomb/ { if($7==tomb) print $3 } '`
|
|
else
|
|
tombmount="$1" # argument should be the mount
|
|
mapper=`mount | awk -vmnt="$tombmount" '/^\/dev\/mapper\/tomb/ { if($3==mnt) print $1 }'`
|
|
tombname="`print $mapper | cut -d. -f2`"
|
|
fi
|
|
|
|
# avoid block when the same tomb is mounted, take only the first
|
|
for tm in ${(f)tombmount}; do tombmount=${tm}; break; done
|
|
|
|
xxx "tomb close argument: $1"
|
|
xxx "name:\t$tombname"
|
|
xxx "mount:\t$tombmount"
|
|
xxx "mapper:\t$mapper"
|
|
|
|
if ! [ -e "$mapper" ]; then
|
|
_warning "Tomb not found: $1"
|
|
_warning "Please specify an existing tomb."
|
|
return 0
|
|
fi
|
|
|
|
if [ $SLAM ]; then
|
|
_success "Slamming tomb $tombname mounted on $tombmount"
|
|
_message "Kill all processes busy inside the tomb"
|
|
if ! slam_tomb "$tombmount"; then
|
|
_warning "Cannot slam the tomb $tombname"
|
|
return 1
|
|
fi
|
|
else
|
|
_success "Closing tomb $tombname mounted on $tombmount"
|
|
fi
|
|
|
|
# check if there are binded dirs and close them
|
|
tombmount_esc=`sed 's:\/:\\\/:g' <<< $tombmount `
|
|
unbind=`mount | awk "/^$tombmount_esc.*bind/"' { print $3 }'`
|
|
for b in ${(f)unbind}; do
|
|
hook="`basename $b`"
|
|
_message "closing tomb hook: $hook"
|
|
umount $b
|
|
if [[ $? != 0 ]]; then
|
|
if [ $SLAM ]; then
|
|
_success "Slamming tomb: killing all processes using this hook"
|
|
slam_tomb "$b"
|
|
if [[ $? == 1 ]]; then
|
|
_warning "Cannot slam the tomb $b"
|
|
return 1
|
|
fi
|
|
umount $b
|
|
else
|
|
_warning "Tomb hook is busy, cannot close tomb."
|
|
return 1
|
|
fi
|
|
fi
|
|
done
|
|
|
|
# Execute post-hooks for eventual cleanup
|
|
if ! option_is_set -n ; then
|
|
exec_safe_post_hooks ${tombmount%%/} close
|
|
fi
|
|
|
|
if [ $tombmount ]; then # tomb is actively mounted
|
|
xxx "performing umount of $tombmount"
|
|
umount ${tombmount}
|
|
if ! [ $? = 0 ]; then
|
|
_warning "Tomb is busy, cannot umount!"
|
|
else
|
|
# this means we used a "default" mount point
|
|
if [ "${tombmount}" = "/media/${tombname}.tomb" ]; then
|
|
rmdir ${tombmount}
|
|
fi
|
|
fi
|
|
fi
|
|
|
|
cryptsetup luksClose $mapper
|
|
if ! [ $? = 0 ]; then
|
|
_warning "error occurred in cryptsetup luksClose ${mapper}"
|
|
return 1
|
|
fi
|
|
|
|
loopdev=`cut -d '.' -f4 <<< "$mapper"`
|
|
losetup -d "/dev/$loopdev"
|
|
|
|
# kill the status tray widget if still present
|
|
# this makes the widget disappear when closing tomb from cli
|
|
awkmapper=`sed 's:\/:\\\/:g' <<< $mapper`
|
|
statustray_pid=`ps ax | awk "/tomb-status $awkmapper/"' {print $1} '`
|
|
if [ ${statustray_pid} ]; then
|
|
kill ${statustray_pid}
|
|
fi
|
|
|
|
_success "Tomb $tombname closed: your bones will rest in peace."
|
|
return 0
|
|
}
|
|
# }}}
|
|
# }}}
|
|
# {{{ - Change Password
|
|
# $1 is the tomb key path
|
|
|
|
# change tomb key password
|
|
change_passwd() {
|
|
_message "Commanded to change password for tomb key $1"
|
|
if ! option_is_set -f && ! option_is_set --ignore-swap; then check_swap; fi
|
|
|
|
local keyfile="$1"
|
|
|
|
# check the keyfile
|
|
if ! [ -r $keyfile ]; then
|
|
_warning "key not found: $keyfile"
|
|
return 1
|
|
fi
|
|
|
|
if ! is_valid_key $keyfile ; then
|
|
_warning "file doesn't seems to be a tomb key: $keyfile"
|
|
_warning "operation aborted."
|
|
return 1
|
|
fi
|
|
|
|
local tmpnewkey lukskey c tombpass tombpasstmp
|
|
|
|
tmpnewkey=`safe_filename tombnew`
|
|
lukskey=`safe_filename tombluks`
|
|
|
|
_success "Changing password for $keyfile"
|
|
keyname=`basename $keyfile`
|
|
if ! option_is_set --tomb-old-pwd; then
|
|
while true; do
|
|
tombpass=`exec_as_user ${TOMBEXEC} askpass "Type old password for ${keyname}" "Change tomb key password"`
|
|
if [[ $? == 1 ]]; then
|
|
die "User aborted"
|
|
fi
|
|
if get_lukskey "${tombpass}" ${keyfile} > ${lukskey}; then
|
|
break
|
|
fi
|
|
done
|
|
else
|
|
tombpass=`option_value --tomb-old-pwd`
|
|
if ! get_lukskey "${tombpass}" ${keyfile} > ${lukskey}; then
|
|
die "Invalid old password"
|
|
fi
|
|
fi
|
|
|
|
{
|
|
gen_key $lukskey > ${tmpnewkey}
|
|
|
|
if ! is_valid_key $tmpnewkey; then
|
|
die "Error: the newly generated keyfile does not seem valid"
|
|
else
|
|
# copy the new key as the original keyfile name
|
|
cp "${tmpnewkey}" "${keyfile}"
|
|
_success "Your passphrase was successfully updated."
|
|
fi
|
|
} always {
|
|
_verbose "cleanup: $tmpnewkey $lukskey"
|
|
# wipe all temp file
|
|
${=WIPE} "${tmpnewkey}"
|
|
${=WIPE} "${lukskey}"
|
|
}
|
|
|
|
return $?
|
|
}
|
|
|
|
# }}}
|
|
# {{{ - Resize
|
|
# resize tomb file size
|
|
# $1 is tomb path
|
|
resize_tomb() {
|
|
_message "Commanded to resize tomb $1 to $opts[-s] megabytes"
|
|
if ! [ $1 ]; then
|
|
_failure "No tomb name specified for resizing"
|
|
elif ! [ -r "$1" ]; then
|
|
_failure "Cannot find $1"
|
|
fi
|
|
|
|
local c tombpass tombkey
|
|
local tombfile=`basename $1`
|
|
local tombdir=`dirname $1`
|
|
# make sure the file has a .tomb extension
|
|
local tombname=${tombfile%%\.*}
|
|
tombfile=${tombname}.tomb
|
|
|
|
if option_is_set -k ; then
|
|
if [[ "`option_value -k`" == "-" ]]; then
|
|
# take key from stdin
|
|
local tombkeydir
|
|
tombkeydir=`safe_dir`
|
|
cat > ${tombkeydir}/stdin.tmp
|
|
tombkey=${tombkeydir}/stdin.tmp
|
|
else
|
|
# take key from a file
|
|
tombkey=`option_value -k`
|
|
fi
|
|
else
|
|
# guess key as lying besides the tomb
|
|
tombkey=${tombdir}/${tombfile}.key
|
|
fi
|
|
|
|
if ! [ -r ${tombkey} ]; then
|
|
_failure "key file not found: ${tombkey}"
|
|
fi
|
|
|
|
local tmp_resize=`safe_filename tmbrsz`
|
|
local newtombsize=$opts[-s]
|
|
local oldtombsize=`stat -c %s "$1" 2>/dev/null`
|
|
local mounted_tomb=`mount -l |
|
|
awk -vtomb="[$tombname]" '/^\/dev\/mapper\/tomb/ { if($7==tomb) print $1 }'`
|
|
|
|
if [ "$mounted_tomb" ]; then
|
|
_failure "the tomb $tombname is open, to resize it it needs to be close."
|
|
fi
|
|
|
|
# MB to bytes conversion
|
|
newtombsize=`expr \( $newtombsize \* 1024 \) \* 1024 2> /dev/null`
|
|
|
|
if ! [ "$newtombsize" ] ; then
|
|
_failure "You must specify the new size of $tombname"
|
|
elif [[ $newtombsize != <-> ]]; then
|
|
_failure "Size is not an integer"
|
|
elif [ "$newtombsize" -le "$oldtombsize" ]; then
|
|
_failure "the new size must be greater then old tomb size."
|
|
fi
|
|
|
|
local delta=`expr $newtombsize \- $oldtombsize`
|
|
|
|
local tombsize_4k=`expr $delta \/ 1024`
|
|
tombsize_4k=`expr $tombsize_4k \/ 4 `
|
|
|
|
act "Generating ${tombfile} of ${newtombsize}Mb (${tombsize_4k} blocks of 4Kb)"
|
|
"$DD" if=/dev/urandom bs=4k count=${tombsize_4k} of="${tmp_resize}"
|
|
|
|
if [ $? = 0 -a -e "${tmp_resize}" ]; then
|
|
xxx "OK: `ls -lh ${tmp_resize}`"
|
|
else
|
|
_failure "Error creating the extra resize $tmp_resize, operation aborted."
|
|
fi
|
|
|
|
cat "${tmp_resize}" >> "$1"
|
|
${=WIPE} "${tmp_resize}"
|
|
|
|
local nstloop=`losetup -f`
|
|
if [ $? = 255 ]; then
|
|
_failure "too many tomb opened. Please close any of them to open another tomb"
|
|
fi
|
|
losetup -f "$1"
|
|
|
|
local mapdate=`date +%s`
|
|
local mapper="tomb.${tombname}.${mapdate}.`basename $nstloop`"
|
|
|
|
_message "Password is required for key ${keyname}"
|
|
for c in 1 2 3; do
|
|
if [ $c = 1 ]; then
|
|
tombpass=`exec_as_user ${TOMBEXEC} askpass ${keyname}`
|
|
else
|
|
tombpass=`exec_as_user ${TOMBEXEC} askpass "$keyname (retry $c)"`
|
|
fi
|
|
get_lukskey "${tombpass}" ${tombkey} | \
|
|
cryptsetup --key-file - luksOpen ${nstloop} ${mapper}
|
|
|
|
unset tombpass
|
|
|
|
if [ -r /dev/mapper/${mapper} ]; then
|
|
break; # password was correct
|
|
fi
|
|
done
|
|
|
|
if ! [ -r /dev/mapper/${mapper} ]; then
|
|
losetup -d ${nstloop}
|
|
_failure "failure mounting the encrypted file"
|
|
fi
|
|
|
|
cryptsetup resize "${mapper}"
|
|
if [ $? != 0 ]; then
|
|
losetup -d ${nstloop}
|
|
_failure "cryptsetup failed to resize $mapper"
|
|
fi
|
|
|
|
e2fsck -f /dev/mapper/${mapper}
|
|
if [ $? != 0 ]; then
|
|
losetup -d ${nstloop}
|
|
_failure "e2fsck failed to check $mapper"
|
|
fi
|
|
|
|
resize2fs /dev/mapper/${mapper}
|
|
if [ $? != 0 ]; then
|
|
losetup -d ${nstloop}
|
|
_failure "resize2fs failed to resize $mapper"
|
|
fi
|
|
|
|
sleep 1 # needs to settle a bit
|
|
|
|
# close and free the loop device
|
|
cryptsetup luksClose "${mapper}"
|
|
losetup -d ${nstloop}
|
|
|
|
return 0
|
|
}
|
|
|
|
# }}}
|
|
# {{{ - List
|
|
# list all tombs mounted in a readable format
|
|
# $1 is optional, to specify a tomb
|
|
list_tombs() {
|
|
if [ $1 ]; then
|
|
# list a specific tomb
|
|
mounted_tombs=`mount -l |
|
|
awk -vtomb="[$1]" '/^\/dev\/mapper\/tomb/ { if($7==tomb) print $1 ";" $3 ";" $5 ";" $6 ";" $7 }'`
|
|
else
|
|
# list all open tombs
|
|
mounted_tombs=`mount -l |
|
|
awk '/^\/dev\/mapper\/tomb/ { print $1 ";" $3 ";" $5 ";" $6 ";" $7 }'`
|
|
fi
|
|
# 1 = full mapper path
|
|
# 2 = mountpont
|
|
# 3 = filesystem
|
|
# 4 = mount options
|
|
# 5 = name
|
|
|
|
if ! [ $mounted_tombs ]; then
|
|
if [ $1 ]; then
|
|
die "There seems to be no open tomb engraved as [$1]"
|
|
else
|
|
die "I can't see any open tomb, may they all rest in peace."
|
|
fi
|
|
fi
|
|
|
|
for t in ${(f)mounted_tombs}; do
|
|
mapper=`basename ${t[(ws:;:)1]}`
|
|
tombname=${t[(ws:;:)5]}
|
|
tombmount=${t[(ws:;:)2]}
|
|
tombfs=${t[(ws:;:)3]}
|
|
tombfsopts=${t[(ws:;:)4]}
|
|
|
|
# calculate tomb size
|
|
ts=`df -hP /dev/mapper/$mapper |
|
|
awk "/mapper/"' { print $2 ";" $3 ";" $4 ";" $5 }'`
|
|
tombtot=${ts[(ws:;:)1]}
|
|
tombused=${ts[(ws:;:)2]}
|
|
tombavail=${ts[(ws:;:)3]}
|
|
tombpercent=${ts[(ws:;:)4]}
|
|
tombp=${tombpercent%%%}
|
|
tombsince=`date --date=@${mapper[(ws:.:)3]} +%c`
|
|
|
|
if option_is_set --get-mountpoint; then
|
|
echo $tombmount
|
|
continue
|
|
fi
|
|
# breaking up such strings is good for translation
|
|
print -n "$fg[green]$tombname"
|
|
print -n "$fg[white] open on "
|
|
print -n "$fg_bold[white]$tombmount"
|
|
print -n "$fg_no_bold[white] using "
|
|
print "$fg_bold[white]$tombfs $tombfsopts"
|
|
|
|
print -n "$fg_no_bold[green]$tombname"
|
|
print -n "$fg_no_bold[white] open since "
|
|
print "$fg_bold[white]$tombsince$fg_no_bold[white]"
|
|
|
|
print -n "$fg_no_bold[green]$tombname"
|
|
print -n "$fg[white] size "
|
|
print -n "$fg_bold[white]$tombtot"
|
|
print -n "$fg_no_bold[white] of which "
|
|
print -n "$fg_bold[white]$tombused"
|
|
print -n "$fg_no_bold[white] used: "
|
|
print -n "$fg_bold[white]$tombavail"
|
|
print -n "$fg_no_bold[white] free ("
|
|
print -n "$fg_bold[white]$tombpercent"
|
|
print "$fg_no_bold[white] full)"
|
|
|
|
if [[ ${tombp} -ge 90 ]]; then
|
|
print -n "$fg_no_bold[green]$tombname"
|
|
print "$fg_bold[red] Your tomb is almost full!"
|
|
fi
|
|
|
|
# now check hooks
|
|
mtomb=`sed 's:\/:\\\/:g' <<< $tombmount`
|
|
mounted_hooks=`mount | awk "/^$mtomb/"' {print $1 ";" $3}'`
|
|
for h in ${(f)mounted_hooks}; do
|
|
print -n "$fg_no_bold[green]$tombname"
|
|
print -n "$fg_no_bold[white] hooks "
|
|
print -n "$fg_bold[white]`basename ${h[(ws:;:)1]}`"
|
|
print -n "$fg_no_bold[white] on "
|
|
print "$fg_bold[white]${h[(ws:;:)2]}$fg_no_bold[white]"
|
|
done
|
|
done
|
|
}
|
|
# }}}
|
|
# {{{ - Status
|
|
launch_status() {
|
|
# calculates the correct arguments to launch tomb-status tray
|
|
# applet; it takes the tomb name as an argument and can be
|
|
# launched after a successful tomb mount.
|
|
|
|
which tomb-status > /dev/null
|
|
if [ $? != 0 ]; then
|
|
die "Cannot find tomb-status binary, operation aborted."
|
|
return 1
|
|
fi
|
|
|
|
if ! [ $DISPLAY ]; then
|
|
_warning "No active X display found, operation aborted."
|
|
_warning "Status launches a graphical tray applet, you need X running."
|
|
return 1
|
|
fi
|
|
|
|
# check argument. use single tomb mounted if no argument
|
|
# abort if more than one tomb is mounted.
|
|
if ! [ $1 ]; then
|
|
tombs=`find /dev/mapper -name 'tomb.*'`
|
|
how_many_tombs=`wc -w <<< "$tombs"`
|
|
if [[ "$how_many_tombs" == "0" ]]; then
|
|
_warning "There is no open tomb, status cannot be launched"
|
|
return 1
|
|
elif [[ "$how_many_tombs" == "1" ]]; then
|
|
#mapper=`find /dev/mapper -name 'tomb.*'`
|
|
tombname=`find /dev/mapper -name "tomb.*"`
|
|
tombname=`basename $tombname | cut -d. -f2`
|
|
_success "launching status for tomb $tombname"
|
|
else
|
|
_warning "Too many tombs mounted, please specify which one"
|
|
list_tombs
|
|
return 0
|
|
fi
|
|
else
|
|
# name was specified on command line
|
|
tombname=$1
|
|
ls /dev/mapper | grep "^tomb.${tombname}.*" > /dev/null
|
|
if [ $? != 0 ]; then
|
|
_warning "Cannot find any tomb named $tombname being open, operation aborted."
|
|
return 1
|
|
fi
|
|
fi
|
|
|
|
# finally we launch
|
|
tombmap=`mount -l | awk "/\[${tombname}\]$/"' { print $1 } '`
|
|
tombmount=`mount -l | awk "/\[${tombname}\]$/"' { print $3 } '`
|
|
tomb-status $tombmap $tombname $tombmount &!
|
|
return 0
|
|
}
|
|
# }}}
|
|
# {{{ - Install GUI
|
|
# install mime-types, bells and whistles for the desktop
|
|
# see http://developers.sun.com/solaris/articles/integrating_gnome.html
|
|
# and freedesktop specs
|
|
install_tomb() {
|
|
|
|
# TODO: distro package deps (for binary)
|
|
# debian: zsh, cryptsetup, sudo
|
|
_message "updating mimetypes..."
|
|
cat <<EOF > /tmp/dyne-tomb.xml
|
|
<?xml version="1.0"?>
|
|
<mime-info xmlns='http://www.freedesktop.org/standards/shared-mime-info'>
|
|
<mime-type type="application/x-tomb-volume">
|
|
<comment>Tomb encrypted volume</comment>
|
|
<glob pattern="*.tomb"/>
|
|
</mime-type>
|
|
<mime-type type="application/x-tomb-key">
|
|
<comment>Tomb crypto key</comment>
|
|
<glob pattern="*.tomb.key"/>
|
|
</mime-type>
|
|
</mime-info>
|
|
EOF
|
|
xdg-mime install /tmp/dyne-tomb.xml
|
|
xdg-icon-resource install --context mimetypes --size 32 monmort.xpm monmort
|
|
xdg-icon-resource install --size 32 monmort.xpm dyne-monmort
|
|
|
|
rm /tmp/dyne-tomb.xml
|
|
|
|
_message "updating desktop..."
|
|
cat <<EOF > /usr/share/applications/tomb.desktop
|
|
[Desktop Entry]
|
|
Version=1.0
|
|
Type=Application
|
|
Name=Tomb crypto undertaker
|
|
GenericName=Crypto undertaker
|
|
Comment=Keep your bones safe
|
|
Exec="${TOMBOPENEXEC}" %U
|
|
TryExec=tomb-open
|
|
Icon=monmort.xpm
|
|
Terminal=true
|
|
Categories=Utility;Security;Archiving;Filesystem;
|
|
MimeType=application/x-tomb-volume;
|
|
X-AppInstall-Package=tomb
|
|
EOF
|
|
update-desktop-database
|
|
|
|
_message "updating menus..."
|
|
cat <<EOF > /etc/menu/tomb
|
|
?package(tomb):command="tomb" icon="/usr/share/pixmaps/monmort.xpm" needs="text" \
|
|
section="Applications/Accessories" title="Tomb" hints="Crypto" \
|
|
hotkey="Tomb"
|
|
EOF
|
|
update-menus
|
|
|
|
_message "updating mime info..."
|
|
cat <<EOF > /usr/share/mime-info/tomb.keys
|
|
# actions for encrypted tomb storage
|
|
application/x-tomb-volume:
|
|
open="${TOMBOPENEXEC}" %f
|
|
view=tomb-open %f
|
|
icon-filename=monmort.xpm
|
|
short_list_application_ids_for_novice_user_level=tomb
|
|
EOF
|
|
cat <<EOF > /usr/share/mime-info/tomb.mime
|
|
# mime type for encrypted tomb storage
|
|
application/x-tomb-volume
|
|
ext: tomb
|
|
|
|
application/x-tomb-key
|
|
ext: tomb.key
|
|
EOF
|
|
cat <<EOF > /usr/lib/mime/packages/tomb
|
|
application/x-tomb-volume; tomb-open '%s'; priority=8
|
|
EOF
|
|
update-mime
|
|
|
|
_message "updating application entry..."
|
|
|
|
cat <<EOF > /usr/share/application-registry/tomb.applications
|
|
tomb
|
|
command=tomb-open
|
|
name=Tomb - Crypto Undertaker
|
|
can_open_multiple_files=false
|
|
expects_uris=false
|
|
requires_terminal=true
|
|
mime-types=application/x-tomb-volume,application/x-tomb-key
|
|
EOF
|
|
_message "Tomb is now installed."
|
|
}
|
|
# }}}
|
|
|
|
# }}}
|
|
# {{{ OPTION PARSING
|
|
# {{{ - Check an option
|
|
option_is_set() {
|
|
#First argument, the option (something like "-s")
|
|
#Second (optional) argument: if it's "out", command will print it out 'set'/'unset'
|
|
# This is useful for if conditions
|
|
#Return 0 if is set, 1 otherwise
|
|
[[ -n ${(k)opts[$1]} ]];
|
|
r=$?
|
|
if [[ $2 == out ]]; then
|
|
if [[ $r == 0 ]]; then
|
|
echo 'set'
|
|
else
|
|
echo 'unset'
|
|
fi
|
|
fi
|
|
return $r;
|
|
}
|
|
# }}}
|
|
# {{{ - Get an option value
|
|
option_value() {
|
|
#First argument, the option (something like "-s")
|
|
<<< ${opts[$1]}
|
|
}
|
|
# }}}
|
|
# }}}
|
|
# {{{ MAIN COMMAND
|
|
|
|
main() {
|
|
local -A subcommands_opts
|
|
### Options configuration
|
|
|
|
# Hi, dear developer! Are you trying to add a new subcommand, or
|
|
# to add some options? Well, keep in mind that an option CAN'T
|
|
# have differente meanings/behaviour in different subcommands.
|
|
|
|
# For example, "-s" means "size" and accept an argument. If you are tempted to add
|
|
# an option "-s" (that means, for example "silent", and doesn't accept an argument)
|
|
# DON'T DO IT!
|
|
|
|
# There are two reasons for that:
|
|
# I. usability; user expect that "-s" is "size"
|
|
# II. Option parsing WILL EXPLODE if you do this kind of bad things
|
|
# (it will say "option defined more than once, and he's right")
|
|
#
|
|
# If you want to use the same option in multiple commands then
|
|
# you can only use the non-abbreviated long-option version like:
|
|
# -force and NOT -f
|
|
main_opts=(q -quiet=q D -debug=D h -help=h v -version=v -no-color -unsecure-dev-mode)
|
|
subcommands_opts[__default]=""
|
|
subcommands_opts[open]="f n -nohook=n k: -key=k U: -uid=U G: -gid=G o: -mount-options=o -ignore-swap -sudo-pwd: -tomb-pwd:"
|
|
subcommands_opts[mount]=${subcommands_opts[open]}
|
|
|
|
subcommands_opts[create]="f s: -size=s -force k: -key=k U: -uid=U G: -gid=G -ignore-swap -kdf: -sudo-pwd: -tomb-pwd: -use-urandom"
|
|
|
|
subcommands_opts[forge]="f -ignore-swap -kdf: -use-urandom U: -uid=U G: -gid=G"
|
|
subcommands_opts[dig]="f -ignore-swap s: -size=s"
|
|
|
|
subcommands_opts[passwd]="f -ignore-swap -kdf: -tomb-old-pwd: -tomb-pwd: "
|
|
subcommands_opts[close]="-sudo-pwd: U: -uid=U G: -gid=G"
|
|
subcommands_opts[help]=""
|
|
subcommands_opts[slam]=""
|
|
subcommands_opts[list]="-get-mountpoint"
|
|
subcommands_opts[help]=""
|
|
subcommands_opts[bury]=""
|
|
subcommands_opts[exhume]=""
|
|
subcommands_opts[decompose]=""
|
|
subcommands_opts[recompose]=""
|
|
subcommands_opts[install]=""
|
|
subcommands_opts[askpass]=""
|
|
subcommands_opts[mktemp]=""
|
|
subcommands_opts[source]=""
|
|
subcommands_opts[status]=""
|
|
subcommands_opts[resize]="s: -size=s k: -key=k U: -uid=U G: -gid=G"
|
|
subcommands_opts[check]="-ignore-swap"
|
|
# subcommands_opts[translate]=""
|
|
|
|
### Detect subcommand
|
|
local -aU every_opts #every_opts behave like a set; that is, an array with unique elements
|
|
for optspec in $subcommands_opts$main_opts; do
|
|
for opt in ${=optspec}; do
|
|
every_opts+=${opt}
|
|
done
|
|
done
|
|
local -a oldstar
|
|
oldstar=($argv)
|
|
#### detect early: useful for --optiion-parsing
|
|
zparseopts -M -D -Adiscardme ${every_opts}
|
|
if [[ -n ${(k)discardme[--option-parsing]} ]]; then
|
|
echo $1
|
|
if [[ -n "$1" ]]; then
|
|
return 1
|
|
fi
|
|
return 0
|
|
fi
|
|
unset discardme
|
|
if ! zparseopts -M -E -D -Adiscardme ${every_opts}; then
|
|
error "error parsing"
|
|
return 127
|
|
fi
|
|
unset discardme
|
|
subcommand=$1
|
|
if [[ -z $subcommand ]]; then
|
|
subcommand="__default"
|
|
fi
|
|
|
|
if [[ -z ${(k)subcommands_opts[$subcommand]} ]]; then
|
|
_warning "There's no such command \"$subcommand\"."
|
|
_failure "Please try -h for help" 127
|
|
# die "Subcommand '$subcommand' doesn't exist" 127
|
|
fi
|
|
argv=(${oldstar})
|
|
unset oldstar
|
|
|
|
### Parsing global + command-specific options
|
|
# zsh magic: ${=string} will split to multiple arguments when spaces occur
|
|
set -A cmd_opts ${main_opts} ${=subcommands_opts[$subcommand]}
|
|
# if there is no option, we don't need parsing
|
|
if [[ -n $cmd_opts ]]; then
|
|
zparseopts -M -E -D -Aopts ${cmd_opts}
|
|
if [[ $? != 0 ]]; then
|
|
_warning "Some error occurred during option processing."
|
|
die "See \"tomb help\" for more info" 127
|
|
fi
|
|
fi
|
|
#build PARAM (array of arguments) and check if there are unrecognized options
|
|
ok=0
|
|
PARAM=()
|
|
for arg in $*; do
|
|
if [[ $arg == '--' || $arg == '-' ]]; then
|
|
ok=1
|
|
continue #it shouldnt be appended to PARAM
|
|
elif [[ $arg[1] == '-' ]]; then
|
|
if [[ $ok == 0 ]]; then
|
|
die "unrecognized option $arg for subcommand $subcommand" 127
|
|
fi
|
|
fi
|
|
PARAM+=$arg
|
|
done
|
|
#first parameter actually is the subcommand: delete it and shift
|
|
if [[ $subcommand != '__default' ]]; then
|
|
PARAM[1]=()
|
|
shift
|
|
fi
|
|
### End parsing command-specific options
|
|
if ! option_is_set --no-color; then
|
|
autoload colors; colors
|
|
fi
|
|
if ! option_is_set --unsecure-dev-mode; then
|
|
for opt in --sudo-pwd --tomb-pwd --use-urandom --tomb-old-pwd; do
|
|
if option_is_set $opt; then
|
|
die "You specified option $opt, which is DANGEROUS and should only be used for testing\nIf you really want so, add --unsecure-dev-mode" 127
|
|
fi
|
|
done
|
|
fi
|
|
|
|
xxx "Tomb command: $subcommand ${PARAM}"
|
|
|
|
case "$subcommand" in
|
|
create)
|
|
check_priv
|
|
create_tomb ${=PARAM}
|
|
;;
|
|
|
|
# new creation in three steps
|
|
forge)
|
|
check_priv
|
|
forge_key ${=PARAM}
|
|
;;
|
|
dig)
|
|
dig_tomb ${=PARAM}
|
|
;;
|
|
|
|
mount|open)
|
|
check_priv
|
|
mount_tomb $PARAM[1] $PARAM[2]
|
|
;;
|
|
umount|close|slam)
|
|
check_priv
|
|
[ "$subcommand" = "slam" ] && SLAM=1
|
|
umount_tomb $PARAM[1]
|
|
;;
|
|
passwd)
|
|
change_passwd $PARAM[1]
|
|
;;
|
|
list)
|
|
list_tombs $PARAM[1]
|
|
;;
|
|
status)
|
|
launch_status $PARAM[1]
|
|
;;
|
|
help)
|
|
usage
|
|
;;
|
|
bury)
|
|
if [ "$STEGHIDE" = 0 ]; then
|
|
_warning "steghide not installed. Cannot bury your key"
|
|
return 1
|
|
fi
|
|
encode_key $PARAM[1] $PARAM[2] ;;
|
|
exhume)
|
|
if [ "$STEGHIDE" = 0 ]; then
|
|
_warning "steghide not installed. Cannot exhume your key"
|
|
return 1
|
|
fi
|
|
decode_key $PARAM[1] $PARAM[2]
|
|
;;
|
|
resize)
|
|
check_priv
|
|
resize_tomb $PARAM[1]
|
|
;;
|
|
# internal commands useful to developers
|
|
'source') return 0 ;;
|
|
install) check_priv ; install_tomb ;;
|
|
askpass) ask_password $PARAM[1] $PARAM[2] ;;
|
|
mktemp) safe_dir $PARAM[1] ;;
|
|
translate) generate_translatable_strings ;;
|
|
check) check_command $PARAM[1] ;;
|
|
__default)
|
|
cat <<EOF
|
|
Tomb $VERSION - a strong and gentle undertaker for your secrets
|
|
|
|
Copyright (C) 2007-2012 Dyne.org Foundation, License GNU GPL v3+
|
|
This is free software: you are free to change and redistribute it
|
|
The latest Tomb sourcecode is published on <http://tomb.dyne.org>
|
|
EOF
|
|
option_is_set -v && {
|
|
cat <<EOF
|
|
|
|
GnuPG available ciphers:
|
|
`list_gnupg_ciphers`
|
|
EOF
|
|
return 0
|
|
}
|
|
usage
|
|
;;
|
|
*)
|
|
_warning "command \"$subcommand\" not recognized"
|
|
_message "try -h for help"
|
|
return 1
|
|
;;
|
|
esac
|
|
return $?
|
|
}
|
|
|
|
# }}}
|
|
# {{{ RUNTIME
|
|
check_bin
|
|
main $@
|
|
ret=$?
|
|
if [[ $ret != 0 ]]; then #this "if" seems useless, but avoid source tomb source from exiting
|
|
exit $ret
|
|
fi
|
|
# }}}
|
|
|
|
# -*- tab-width: 4; indent-tabs-mode:nil; -*-
|
|
# vim: set shiftwidth=4 expandtab:
|