mirror of
https://github.com/Llewellynvdm/Tomb.git
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2128 lines
58 KiB
Bash
Executable File
2128 lines
58 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 commandline tool to easily operate encryption of secret data
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#
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# Homepage on: [tomb.dyne.org](http://tomb.dyne.org)
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# {{{ License
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# Copyright (C) 2007-2013 Dyne.org Foundation
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#
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# Tomb is designed, written and maintained by Denis Roio <jaromil@dyne.org>
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#
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# With contributions by Anathema, Boyska and Hellekin O. Wolf.
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#
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# Testing and reviews are contributed by Dreamer, Shining,
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# Mancausoft, Asbesto Molesto and Nignux.
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#
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# Tomb's artwork is contributed by Jordi aka Mon Mort.
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#This source code is free software; you can redistribute it
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#and/or modify it under the terms of the GNU Public License
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#as published by the Free Software Foundation; either
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#version 3 of the License, or (at your option) any later
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#version.
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#
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#This source code is distributed in the hope that it will be
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#useful, but WITHOUT ANY WARRANTY; without even the implied
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#warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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#PURPOSE. Please refer to the GNU Public License for more
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#details.
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#
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#You should have received a copy of the GNU Public License
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#along with this source code; if not, write to: Free
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#Software Foundation, Inc., 675 Mass Ave, Cambridge, MA
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#02139, USA.
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# }}} - License
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# {{{ Global variables
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VERSION=1.3.1
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DATE="Jun/2013"
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TOMBEXEC=$0
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typeset -a OLDARGS
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for arg in ${argv}; do OLDARGS+=($arg); done
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DD="dd"
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WIPE="rm -f"
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MKFS="mkfs.ext3 -q -F -j -L"
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STEGHIDE=1
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MKTEMP=1
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RESIZER=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 tombkeydir # global used if key comes from stdin
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tombkeydir=""
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typeset -h _uid
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typeset -h _gid
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typeset -h _tty
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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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# }}}
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# {{{ Safety functions
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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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# Create temporary directories with caution
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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 $1 dir 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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# 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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# 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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# Ask user for a password
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ask_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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# 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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# 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 $?
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}
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#Escalate privileges
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check_priv() {
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# save original user
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username=$USER
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if [ $UID != 0 ]; then
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xxx "Using sudo for root execution of '${TOMBEXEC} ${(f)OLDARGS}'"
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# check if sudo has a timestamp active
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sudok=false
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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}" -U ${UID} -G ${GID} -T ${TTY} "${(@)OLDARGS}"
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exit $?
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fi # are we root already
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# make sure necessary kernel modules are loaded
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modprobe dm_mod 2>/dev/null
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modprobe dm_crypt 2>/dev/null
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return 0
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}
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# }}}
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# {{{ Commandline interaction
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usage() {
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cat <<EOF
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Syntax: tomb [options] command [file] [place]
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Commands:
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dig create a new empty TOMB file of --size in MB
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forge create a new KEY file and set its password
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lock installs a lock on a TOMB to use it with KEY
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open open an existing TOMB
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index update the search indexes of tombs
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search looks for filenames matching text patterns
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list list open TOMBs
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close close a TOMB (or all)
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slam slam a TOMB killing all programs using it
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passwd change the password of a KEY
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EOF
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if [ "$RESIZER" = 1 ]; then
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cat <<EOF
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resize resize a TOMB to a new --size (can only grow)
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EOF
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fi
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if [ "$STEGHIDE" = 1 ]; then
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cat <<EOF
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bury hide a KEY inside a JPEG image
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exhume extract a KEY from a JPEG image
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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 be used ('-k -' to read from stdin)
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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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# Check an option
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option_is_set() {
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# First argument, the commandline flag (i.e. "-s").
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# Second (optional) argument: if "out", command will print it out 'set'/'unset'
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# (useful for if conditions).
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# Return 0 if is set, 1 otherwise
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[[ -n ${(k)opts[$1]} ]];
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r=$?
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if [[ $2 == out ]]; then
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if [[ $r == 0 ]]; then
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echo 'set'
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else
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echo 'unset'
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fi
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fi
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return $r;
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}
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# Get an option value
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option_value() {
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# First argument, the commandline flag (i.e. "-s").
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<<< ${opts[$1]}
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}
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# Messaging function with pretty coloring
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function _msg() {
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local command="print -P"
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local progname="$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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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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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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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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option_is_set -q || _msg warning "$1"
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return 1
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}
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function _failure die() {
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typeset -i exitcode=${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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# Print out progress to inform GUI caller applications (--batch mode)
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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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# Check what's installed
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check_bin() {
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# check for required programs
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for req in cryptsetup pinentry sudo gpg; do
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command -v $req >/dev/null || die "Cannot find $req. It's a requirement to use Tomb, please install it." 1
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done
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export PATH=/sbin:/usr/sbin:$PATH
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# which dd command to use
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command -v dcfldd > /dev/null
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{ test $? = 0 } && { DD="dcfldd statusinterval=1" }
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# which wipe command to use
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command -v wipe > /dev/null && WIPE="wipe -f -s" || WIPE="rm -f"
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# check for filesystem creation progs
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command -v mkfs.ext4 > /dev/null && \
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MKFS="mkfs.ext4 -q -F -j -L" || \
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MKFS="mkfs.ext3 -q -F -j -L"
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# check for mktemp
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command -v mktemp > /dev/null || MKTEMP=0
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# check for steghide
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command -v steghide > /dev/null || STEGHIDE=0
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# check for resize
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command -v e2fsck resize2fs > /dev/null || RESIZER=0
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if which tomb-kdf-pbkdf2 &> /dev/null; then
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KDF_PBKDF2="tomb-kdf-pbkdf2"
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else
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local our_pbkdf2
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our_pbkdf2="$(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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# }}} - Commandline interaction
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# {{{ Key operations
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# This function retrieves a tomb key specified on commandline or one
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# laying nearby the tomb if found, or from stdin if the option was
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# selected. It also runs validity checks on the file. Callers should
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# always use drop_key() when done with all key operations.
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# On success returns 0 and prints out the full path to the key
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load_key() {
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tombdir=`dirname $1`
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tombfile=`basename $1`
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tombname=${tombfile%%\.*}
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if option_is_set -k ; then
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if [[ "`option_value -k`" == "-" ]]; then
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xxx "load_key reading from stdin"
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# take key from stdin
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tombkeydir=`safe_dir tomb`
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xxx "tempdir is $tombkeydir"
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cat > ${tombkeydir}/stdin.tmp
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tombdir=${tombkeydir}
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tombfile=stdin.tmp
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tombname="stdin"
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elif [[ "`option_value -k`" != "" ]]; then
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# take key from a file
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tombkey=`option_value -k`
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tombdir=`dirname $tombkey`
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tombfile=`basename $tombkey`
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fi
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fi
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tombkey=${tombdir}/${tombfile}
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xxx "load_key: `ls -lh ${tombkey}`"
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if [ -r "${tombkey}" ]; then
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_message "We'll use this key: ${tombkey}"
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else
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return 1
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fi
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# this does a check on the file header
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if ! is_valid_key ${tombkey}; then
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_warning "The key seems invalid, the application/pgp header is missing"
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return 1
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fi
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print "$tombkey"
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return 0
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}
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# This function asks the user for the password to use the key it tests
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# it against the return code of gpg on success returns 0 and prints
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# the password (be careful about where you save it!)
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ask_key_password() {
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tombkey="$1"
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local keyname=`basename $tombkey`
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_message "a password is required to use key ${keyname}"
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local passok=0
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local tombpass=""
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if option_is_set --tomb-pwd; then
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tombpass=`option_value --tomb-pwd`
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xxx "ask_key_password takes tombpass from CLI argument: $tombpass"
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get_lukskey "$tombpass" ${tombkey} >/dev/null
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if [ $? = 0 ]; then
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passok=1; _message "Password OK."; fi
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else
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for c in 1 2 3; do
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if [ $c = 1 ]; then
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tombpass=`exec_as_user ${TOMBEXEC} askpass "Insert password to use key: $keyname"`
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else
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tombpass=`exec_as_user ${TOMBEXEC} askpass "Insert password to use key: $keyname (retry $c)"`
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fi
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if [[ $? != 0 ]]; then
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_warning "User aborted password dialog"
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return 1
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fi
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get_lukskey "$tombpass" ${tombkey} >/dev/null
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if [ $? = 0 ]; then
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passok=1; _message "Password OK."
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break;
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fi
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done
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fi
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|
|
{ test "$passok" = "1" } || { return 1 }
|
|
print "$tombpass"
|
|
unset $tombpass
|
|
return 0
|
|
}
|
|
|
|
# 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" # $1 is the tomb key path
|
|
|
|
|
|
# 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"
|
|
|
|
tombpass=`ask_key_password $keyfile`
|
|
{ test $? = 0 } || {
|
|
die "No valid password supplied" }
|
|
|
|
get_lukskey "${tombpass}" ${keyfile} > ${lukskey};
|
|
|
|
drop_key
|
|
|
|
{
|
|
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 $?
|
|
}
|
|
|
|
# To be called after load_key()
|
|
drop_key() {
|
|
{ test "$tombkeydir" = "" } && { return 0 }
|
|
{ test -r ${tombkeydir}/stdin.tmp } && {
|
|
${=WIPE} ${tombkeydir}/stdin.tmp; rmdir ${tombkeydir} }
|
|
}
|
|
|
|
#$1 is the keyfile we are checking
|
|
is_valid_key() {
|
|
# this header validity check is a virtuosism by Hellekin
|
|
[[ `file =(awk '/^-+BEGIN/,0' $1) -bi` =~ application/pgp ]]
|
|
return $?
|
|
}
|
|
|
|
# Gets a key file and a password, prints out the decoded contents to
|
|
# be used directly by Luks as a cryptographic key
|
|
get_lukskey() {
|
|
# $1 is the password, $2 is the keyfile
|
|
|
|
local tombpass=$1
|
|
local keyfile=$2
|
|
firstline=`head -n1 $keyfile`
|
|
xxx "get_lukskey XXX $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
|
|
|
|
# fix for gpg 1.4.11 where the --status-* options don't work ;^/
|
|
gpgver=`gpg --version | awk '/^gpg/ {print $3}'`
|
|
if [ "$gpgver" = "1.4.11" ]; then
|
|
xxx "GnuPG is version 1.4.11 - adopting status fix"
|
|
|
|
print ${tombpass} | \
|
|
gpg --batch --passphrase-fd 0 --no-tty --no-options -d "${keyfile}"
|
|
unset tombpass
|
|
ret=$?
|
|
|
|
else # using status-file in gpg != 1.4.12
|
|
|
|
res=`safe_filename tomb.open`
|
|
{ test $? = 0 } || { unset tombpass; die "Fatal error creating temp file." }
|
|
|
|
print ${tombpass} | \
|
|
gpg --batch --passphrase-fd 0 --no-tty --no-options --status-fd 2 \
|
|
--no-mdc-warning --no-permission-warning --no-secmem-warning \
|
|
-d "${keyfile}" 2>$res
|
|
unset tombpass
|
|
grep 'DECRYPTION_OKAY' $res
|
|
ret=$?; rm -f $res
|
|
|
|
fi
|
|
xxx "get_lukskey returns $ret"
|
|
return $ret
|
|
}
|
|
|
|
|
|
# takes care to encrypt a key
|
|
# honored options: --kdf --tomb-pwd
|
|
gen_key() {
|
|
# $1 the lukskey to encrypt
|
|
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`"
|
|
xxx "gen_key takes tombpass from CLI argument: $tombpass"
|
|
fi
|
|
|
|
|
|
# KDF is a new key strenghtening technique against brute forcing
|
|
# see: https://github.com/dyne/Tomb/issues/82
|
|
_verbose "KDF method chosen is: '`option_value --kdf`'"
|
|
kdf_method=$(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 $header
|
|
|
|
print "${tombpass}" \
|
|
| gpg --openpgp --batch --no-options --no-tty --passphrase-fd 0 2>/dev/null \
|
|
-o - -c -a ${lukskey}
|
|
|
|
unset tombpass
|
|
}
|
|
|
|
# prints an array of ciphers available in gnupg (to encrypt keys)
|
|
list_gnupg_ciphers() {
|
|
# 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
|
|
}
|
|
|
|
# Steganographic function to bury a key inside an image.
|
|
bury_key() {
|
|
tombkey=$1
|
|
imagefile=$2
|
|
|
|
file $tombkey | grep PGP > /dev/null
|
|
if [ $? != 0 ]; then
|
|
_warning "encode failed: $tombkey is not a tomb key"
|
|
return 1
|
|
fi
|
|
file $imagefile | grep JPEG > /dev/null
|
|
if [ $? != 0 ]; then
|
|
_warning "encode failed: $imagefile is not a jpeg image"
|
|
return 1
|
|
fi
|
|
|
|
_success "Encoding key $tombkey inside image $imagefile"
|
|
_message "please choose a password for the encoding"
|
|
|
|
# here user is prompted for key password
|
|
for c in 1 2 3; do
|
|
# 3 tries to write two times a matching password
|
|
tombpass=`exec_as_user ${TOMBEXEC} askpass "Steg password for ${tombkey}"`
|
|
tombpasstmp=$tombpass
|
|
tombpass=`exec_as_user ${TOMBEXEC} askpass "Steg password for ${tombkey} (again)"`
|
|
if [ "$tombpasstmp" = "$tombpass" ]; then
|
|
break;
|
|
fi
|
|
unset tombpasstmp
|
|
unset tombpass
|
|
done
|
|
|
|
if [ -z $tombpass ]; then
|
|
_warning "passwords don't match, aborting operation."
|
|
return 1
|
|
fi
|
|
|
|
# Requires steghide to be installed
|
|
awk '
|
|
/^-----/ {next}
|
|
/^Version/ {next}
|
|
{print $0}' ${tombkey} \
|
|
| steghide embed --embedfile - --coverfile ${imagefile} \
|
|
-p ${tombpass} -z 9 -e serpent cbc
|
|
if [ $? != 0 ]; then
|
|
_warning "encoding error: steghide reports problems"
|
|
res=1
|
|
else
|
|
_success "tomb key encoded succesfully into image ${imagefile}"
|
|
res=0
|
|
fi
|
|
|
|
unset tombpass
|
|
|
|
return $res
|
|
}
|
|
# Steganographic function to exhume a key buries into an image
|
|
exhume_key() {
|
|
tombname=$1
|
|
imagefile=$2
|
|
res=1
|
|
|
|
file $imagefile | grep JPEG > /dev/null
|
|
if [ $? != 0 ]; then
|
|
_warning "encode failed: $imagefile is not a jpeg image"
|
|
return 1
|
|
fi
|
|
|
|
keyfile=${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
|
|
|
|
# always steghide required
|
|
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
|
|
}
|
|
|
|
# }}} - Key handling
|
|
|
|
# {{{ Create
|
|
|
|
# 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"
|
|
|
|
{ test "$1" = "" } && {
|
|
_warning "no key name specified for creation"
|
|
return 1 }
|
|
|
|
{ test -r "$1" } && {
|
|
_warning "Forging this key would overwrite an existing file. Operation aborted."
|
|
die "`ls -lh $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
|
|
|
|
|
|
# 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
|
|
|
|
xxx "Data dump using ${DD[1]} from $random_source"
|
|
${=DD} bs=1 count=256 if=$random_source of=${keytmp}/tomb.tmp
|
|
|
|
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
|
|
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, means that it will create an empty file to be formatted
|
|
# as a loopback filesystem. Initially the file is filled with random data
|
|
# taken from /dev/urandom which improves the tomb's overall security
|
|
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"
|
|
|
|
[[ $tombsize -lt 10 ]] && die "Tombs can't be smaller than 10 megabytes"
|
|
|
|
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}"
|
|
|
|
_message "Generating ${tombfile} of ${tombsize}MiB"
|
|
# we will first touch the file and set permissions: this way, even if interrupted, permissions are right
|
|
touch ${tombdir}/${tombfile}
|
|
chmod 0600 "${tombdir}/${tombfile}"
|
|
chown $_uid:$_gid "${tombdir}/${tombfile}"
|
|
|
|
xxx "Data dump using ${DD[1]} from /dev/urandom"
|
|
${=DD} if=/dev/urandom bs=1048576 count=${tombsize} 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"
|
|
}
|
|
|
|
|
|
# this function locks a tomb with a key file
|
|
# in fact LUKS formatting the loopback volume
|
|
# it take arguments as the LUKS cipher to be used
|
|
lock_tomb_with_key() {
|
|
if ! [ $1 ]; then
|
|
_warning "no tomb specified for locking"
|
|
_warning "usage: tomb lock file.tomb file.tomb.key"
|
|
return 1
|
|
fi
|
|
|
|
tombfile="$1"
|
|
_message "Commanded to lock tomb ${tombfile}"
|
|
|
|
tombdir=`dirname $1`
|
|
tombfile=`basename $1`
|
|
tombname=${tombfile%%\.*}
|
|
|
|
{ test -f ${tombdir}/${tombfile} } || {
|
|
die "There is no tomb here. You have to it dig first."
|
|
return 1 }
|
|
|
|
xxx "tomb found: ${tombdir}/${tombfile}"
|
|
|
|
nstloop=`losetup -f` # get the number for next loopback device
|
|
losetup -f ${tombdir}/${tombfile} # allocates the next loopback for our file
|
|
|
|
xxx "loop mounted on ${nstloop}"
|
|
|
|
_message "checking if the tomb is empty (we never step on somebody else's bones)"
|
|
cryptsetup isLuks ${nstloop}
|
|
if [ $? = 0 ]; then
|
|
# is it a LUKS encrypted nest? then bail out and avoid reformatting it
|
|
_warning "The tomb was already locked with another key"
|
|
losetup -d ${nstloop}
|
|
die "Operation aborted. I cannot lock an already locked tomb. Go dig a new one."
|
|
else
|
|
_message "fine, this tomb seems empty."
|
|
fi
|
|
|
|
# load key from options or file
|
|
tombkey=`load_key ${tombdir}/${tombfile}.key`
|
|
{ test $? = 0 } || {
|
|
losetup -d $nstloop
|
|
die "Aborting operations: error loading key $tombkey" }
|
|
# make sure to call drop_key later
|
|
|
|
# the encryption cipher for a tomb can be set at creation using -o
|
|
if option_is_set -o; then
|
|
cipher="`option_value -o`"
|
|
else
|
|
cipher="aes-cbc-essiv:sha256"
|
|
fi
|
|
_message "locking using cipher: $cipher"
|
|
|
|
# get the pass from the user and check it
|
|
tombpass=`ask_key_password "$tombkey"`
|
|
{ test $? = 0 } || {
|
|
losetup -d ${nstloop}
|
|
die "No valid password supplied" }
|
|
|
|
_success "Locking ${tombfile} with ${tombkey}"
|
|
|
|
_message "formatting Luks mapped device"
|
|
get_lukskey "${tombpass}" ${tombkey} | \
|
|
cryptsetup --key-file - --batch-mode \
|
|
--cipher ${cipher} --key-size 256 --key-slot 0 \
|
|
luksFormat ${nstloop}
|
|
if ! [ $? = 0 ]; then
|
|
_warning "cryptsetup luksFormat returned an error"
|
|
unset tombpass
|
|
losetup -d $nstloop
|
|
die "Operation aborted."
|
|
fi
|
|
|
|
get_lukskey "${tombpass}" ${tombkey} | \
|
|
cryptsetup --key-file - \
|
|
--cipher ${cipher} luksOpen ${nstloop} tomb.tmp
|
|
if ! [ $? = 0 ]; then
|
|
_warning "cryptsetup luksOpen returned an error"
|
|
unset tombpass
|
|
losetup -d $nstloop
|
|
die "Operation aborted."
|
|
fi
|
|
|
|
# cleanup tombs
|
|
unset tombpass
|
|
drop_key # make sure all temp files are out
|
|
|
|
_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 locking $tombname using Luks dm-crypt ${create_cipher}"
|
|
_success "Your tomb is ready in ${tombdir}/${tombfile} and secured with key ${tombkey}"
|
|
|
|
}
|
|
|
|
# backward compatibility
|
|
create_tomb() {
|
|
xxx "create_tomb(): ${=@} ${=OLDARGS}"
|
|
if ! [ $1 ]; then
|
|
_warning "no tomb name specified for creation"
|
|
return 1
|
|
fi
|
|
|
|
|
|
{ test -r "$1" } && {
|
|
_warning "Creating this tomb would overwrite an existing file. Operation aborted."
|
|
die "`ls -lh $1`" }
|
|
|
|
{ test $? = 0 } || { die "Failed to dig tomb, operation aborted." }
|
|
|
|
|
|
tombfile=`basename $1`
|
|
tombdir=`dirname $1`
|
|
# make sure the file has a .tomb extension
|
|
tombname=${tombfile%%\.*}
|
|
tombfile=${tombname}.tomb
|
|
|
|
${TOMBEXEC} dig ${=PARAM}
|
|
${TOMBEXEC} forge ${tombdir}/${tombfile}.key
|
|
{ test $? = 0 } || { die "Failed to forge key, operation aborted." }
|
|
|
|
${TOMBEXEC} lock ${tombdir}/${tombfile} -k ${tombdir}/${tombfile}.key
|
|
{ test $? = 0 } || { die "Failed to lock tomb with key, operation aborted." }
|
|
|
|
yes "Tomb $tombname succesfully created"
|
|
ls -l ${tombfile}*
|
|
}
|
|
# }}} - Creation
|
|
|
|
# {{{ 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
|
|
|
|
|
|
# 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}"
|
|
|
|
# load_key called here
|
|
tombkey=`load_key ${tombdir}/${tombfile}.key`
|
|
{ test $? = 0 } || {
|
|
die "Aborting operations: error loading key $tombkey" }
|
|
|
|
|
|
if [ "$2" = "" ]; then
|
|
tombmount=/media/${tombfile}
|
|
_message "mountpoint not specified, using default: $tombmount"
|
|
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."
|
|
_message "here below its status is reported:"
|
|
list_tombs ${tombname}
|
|
return 0
|
|
fi
|
|
|
|
_success "Opening $tombfile on $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}
|
|
|
|
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"
|
|
losetup -d ${nstloop}
|
|
return 1
|
|
fi
|
|
say "this tomb is a valid LUKS encrypted device"
|
|
|
|
luksdump="`cryptsetup luksDump ${nstloop}`"
|
|
tombdump=(`print $luksdump | awk '
|
|
/^Cipher name/ {print $3}
|
|
/^Cipher mode/ {print $3}
|
|
/^Hash spec/ {print $3}'`)
|
|
say "cipher is \"$tombdump[1]\" mode \"$tombdump[2]\" hash \"$tombdump[3]\""
|
|
|
|
slotwarn=`print $luksdump | awk '
|
|
BEGIN { zero=0 }
|
|
/^Key slot 0/ { zero=1 }
|
|
/^Key slot.*ENABLED/ { if(zero==1) print "WARN" }'`
|
|
{ test "$slotwarn" = "WARN" } && {
|
|
_warning "Multiple key slots are enabled on this tomb. Beware: there can be a backdoor." }
|
|
|
|
# save date of mount in minutes since 1970
|
|
mapdate=`date +%s`
|
|
|
|
mapper="tomb.${tombname}.${mapdate}.`basename $nstloop`"
|
|
keyname=`basename $tombkey | cut -d. -f1`
|
|
|
|
tombpass=`ask_key_password $tombkey`
|
|
{ test $? = 0 } || {
|
|
losetup -d ${nstloop}
|
|
die "No valid password supplied" }
|
|
|
|
get_lukskey "${tombpass}" ${tombkey} | \
|
|
cryptsetup --key-file - luksOpen ${nstloop} ${mapper}
|
|
|
|
|
|
# key dropped here
|
|
drop_key
|
|
unset tombpass
|
|
|
|
if ! [ -r /dev/mapper/${mapper} ]; then
|
|
losetup -d ${nstloop}
|
|
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
|
|
|
|
# we need root from here on
|
|
mkdir -p $tombmount
|
|
|
|
mount -o $MOUNTOPTS /dev/mapper/${mapper} ${tombmount}
|
|
|
|
chown ${_uid}:${_gid} ${tombmount}
|
|
chmod 0750 ${tombmount}
|
|
|
|
_success "Success opening $tombfile on $fg_bold[white]$tombmount$fg_no_bold[white]"
|
|
|
|
# print out when was opened the last time, by whom and where
|
|
{ test -r ${tombmount}/.last } && {
|
|
tombtty="`cat ${tombmount}/.tty`"
|
|
tombhost="`cat ${tombmount}/.host`"
|
|
tombuid="`cat ${tombmount}/.uid`"
|
|
tomblast="`cat ${tombmount}/.last`"
|
|
tombuser=`awk -F: '/:'"$tombuid"':/ {print $1}' /etc/passwd`
|
|
say "last visit by $fg_bold[white]$tombuser($tombuid)$fg_no_bold[white] from $fg_bold[white]$tombtty$fg_no_bold[white] on $fg_bold[white]$tombhost$fg_no_bold[white]"
|
|
say "on date $fg_bold[white]`date --date @${tomblast} +%c`$fg_no_bold[white]"
|
|
}
|
|
# write down the UID and TTY that opened the tomb
|
|
rm -f ${tombmount}/.uid
|
|
echo ${_uid} > ${tombmount}/.uid
|
|
rm -f ${tombmount}/.tty
|
|
echo ${_tty} > ${tombmount}/.tty
|
|
# also the hostname
|
|
rm -f ${tombmount}/.host
|
|
echo `hostname` > ${tombmount}/.host
|
|
# and the "last time opened" information
|
|
# in minutes since 1970, this is printed at next open
|
|
rm -f ${tombmount}/.last
|
|
echo "`date +%s`" > ${tombmount}/.last
|
|
# human readable: date --date=@"`cat .last`" +%c
|
|
|
|
|
|
# process bind-hooks (mount -o bind of directories)
|
|
# and post-hooks (execute on open)
|
|
if ! option_is_set -n ; then
|
|
exec_safe_bind_hooks ${tombmount}
|
|
exec_safe_post_hooks ${tombmount} open
|
|
fi
|
|
return 0
|
|
}
|
|
|
|
# ## Hooks execution
|
|
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 open
|
|
|
|
# {{{ List
|
|
|
|
# list all tombs mounted in a readable format
|
|
# $1 is optional, to specify a tomb
|
|
list_tombs() {
|
|
|
|
# list all open tombs
|
|
mounted_tombs=(`list_tomb_mounts $1`)
|
|
{ test ${#mounted_tombs} = 0 } && {
|
|
die "I can't see any ${1:-open} tomb, may they all rest in peace." }
|
|
|
|
for t in ${mounted_tombs}; do
|
|
mapper=`basename ${t[(ws:;:)1]}`
|
|
tombname=${t[(ws:;:)5]}
|
|
tombmount=${t[(ws:;:)2]}
|
|
tombfs=${t[(ws:;:)3]}
|
|
tombfsopts=${t[(ws:;:)4]}
|
|
tombloop=${mapper[(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`
|
|
|
|
# find out who opens it from where
|
|
{ test -r ${tombmount}/.tty } && {
|
|
tombtty="`cat ${tombmount}/.tty`"
|
|
tombhost="`cat ${tombmount}/.host`"
|
|
tombuid="`cat ${tombmount}/.uid`"
|
|
tombuser=`awk -F: '/:'"$tombuid"':/ {print $1}' /etc/passwd`
|
|
}
|
|
|
|
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$fg_no_bold[white]"
|
|
|
|
{ test "$tombtty" = "" } || {
|
|
print -n "$fg_no_bold[green]$tombname"
|
|
print -n "$fg_no_bold[white] open by "
|
|
print -n "$fg_bold[white]$tombuser"
|
|
print -n "$fg_no_bold[white] from "
|
|
print -n "$fg_bold[white]$tombtty"
|
|
print -n "$fg_no_bold[white] on "
|
|
print "$fg_bold[white]$tombhost"
|
|
}
|
|
|
|
print -n "$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
|
|
mounted_hooks=(`list_tomb_binds $tombname`)
|
|
for h in ${mounted_hooks}; do
|
|
print -n "$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
|
|
}
|
|
|
|
|
|
# print out an array of mounted tombs (internal use)
|
|
# format is semi-colon separated list of attributes
|
|
# if 1st arg is supplied, then list only that tomb
|
|
#
|
|
# String positions in the semicolon separated array:
|
|
#
|
|
# 1. full mapper path
|
|
#
|
|
# 2. mountpoint
|
|
#
|
|
# 3. filesystem type
|
|
#
|
|
# 4. mount options
|
|
#
|
|
# 5. tomb name
|
|
list_tomb_mounts() {
|
|
if [ "$1" = "" ]; then
|
|
# list all open tombs
|
|
mount -l \
|
|
| awk '
|
|
BEGIN { main="" }
|
|
/^\/dev\/mapper\/tomb/ {
|
|
if(main==$1) next;
|
|
print $1 ";" $3 ";" $5 ";" $6 ";" $7
|
|
main=$1
|
|
}
|
|
'
|
|
else
|
|
# list a specific tomb
|
|
mount -l \
|
|
| awk -vtomb="[$1]" '
|
|
BEGIN { main="" }
|
|
/^\/dev\/mapper\/tomb/ {
|
|
if($7!=tomb) next;
|
|
if(main==$1) next;
|
|
print $1 ";" $3 ";" $5 ";" $6 ";" $7
|
|
main=$1
|
|
}
|
|
'
|
|
fi
|
|
}
|
|
|
|
# list_tomb_binds
|
|
# print out an array of mounted bind hooks (internal use)
|
|
# format is semi-colon separated list of attributes
|
|
# needs an argument: name of tomb whose hooks belong
|
|
list_tomb_binds() {
|
|
if [ "$1" = "" ]; then
|
|
_failure "internal error: list_tomb_binds called without argument."; fi
|
|
|
|
# list bind hooks on util-linux 2.20 (Debian 7)
|
|
mount -l \
|
|
| awk -vtomb="$1" '
|
|
BEGIN { main="" }
|
|
/^\/dev\/mapper\/tomb/ {
|
|
if($7!=tomb) next;
|
|
if(main=="") { main=$1; next; }
|
|
if(main==$1)
|
|
print $1 ";" $3 ";" $5 ";" $6 ";" $7
|
|
}
|
|
'
|
|
|
|
# list bind hooks on util-linux 2.17 (Debian 6)
|
|
tombmount=`mount -l \
|
|
| awk -vtomb="$1" '
|
|
/^\/dev\/mapper\/tomb/ { if($7!=tomb) next; print $3; exit; }'`
|
|
|
|
mount -l | grep "^$tombmount" \
|
|
| awk -vtomb="$1" '
|
|
/bind/ { print $1 ";" $3 ";" $5 ";" $6 ";" $7 }'
|
|
}
|
|
|
|
# }}} - Tomb list
|
|
|
|
# {{{ Index and search
|
|
|
|
# index files in all tombs for search
|
|
# $1 is optional, to specify a tomb
|
|
index_tombs() {
|
|
{ command -v updatedb > /dev/null } || {
|
|
die "Cannot index tombs on this system: updatedb (mlocate) not installed" }
|
|
|
|
updatedbver=`updatedb --version | grep '^updatedb'`
|
|
[[ "$updatedbver" =~ "GNU findutils" ]] && {
|
|
_warning "Cannot use GNU findutils for index/search commands" }
|
|
[[ "$updatedbver" =~ "mlocate" ]] || {
|
|
die "Index command needs 'mlocate' to be installed." }
|
|
|
|
xxx "$updatedbver"
|
|
|
|
mounted_tombs=(`list_tomb_mounts $1`)
|
|
{ test ${#mounted_tombs} = 0 } && {
|
|
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
|
|
}
|
|
|
|
yes "Creating and updating search indexes"
|
|
for t in ${mounted_tombs}; do
|
|
mapper=`basename ${t[(ws:;:)1]}`
|
|
tombname=${t[(ws:;:)5]}
|
|
tombmount=${t[(ws:;:)2]}
|
|
{ test -r ${tombmount}/.noindex } && {
|
|
say "skipping $tombname (.noindex found)"
|
|
continue }
|
|
say "indexing $tombname"
|
|
updatedb -l 0 -o ${tombmount}/.updatedb -U ${tombmount}
|
|
say "search index updated"
|
|
done
|
|
}
|
|
search_tombs() {
|
|
{ command -v locate > /dev/null } || {
|
|
die "Cannot index tombs on this system: updatedb (mlocate) not installed" }
|
|
|
|
updatedbver=`updatedb --version | grep '^updatedb'`
|
|
[[ "$updatedbver" =~ "GNU findutils" ]] && {
|
|
_warning "Cannot use GNU findutils for index/search commands" }
|
|
[[ "$updatedbver" =~ "mlocate" ]] || {
|
|
die "Index command needs 'mlocate' to be installed." }
|
|
|
|
xxx "$updatedbver"
|
|
|
|
# list all open tombs
|
|
mounted_tombs=(`list_tomb_mounts`)
|
|
if [ ${#mounted_tombs} = 0 ]; then
|
|
die "I can't see any open tomb, may they all rest in peace."; fi
|
|
|
|
yes "Searching for: $fg_bold[white]${(f)@}$fg_no_bold[white]"
|
|
for t in ${mounted_tombs}; do
|
|
xxx "checking for index: ${t}"
|
|
mapper=`basename ${t[(ws:;:)1]}`
|
|
tombname=${t[(ws:;:)5]}
|
|
tombmount=${t[(ws:;:)2]}
|
|
if [ -r ${tombmount}/.updatedb ]; then
|
|
say "Searching in tomb $tombname"
|
|
locate -d ${tombmount}/.updatedb -e -i "${(f)@}"
|
|
say "Matches found: `locate -d ${tombmount}/.updatedb -e -i -c ${(f)@}`"
|
|
else
|
|
no "skipping tomb $tombname: not indexed"
|
|
no "run 'tomb index' to create indexes"
|
|
fi
|
|
done
|
|
|
|
}
|
|
|
|
# }}} - Index and search
|
|
|
|
# {{{ Resize
|
|
|
|
# resize tomb file size
|
|
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
|
|
# $1 is the tomb file path
|
|
|
|
local c tombpass tombkey
|
|
|
|
tombdir=`dirname $1`
|
|
tombfile=`basename $1`
|
|
tombname=${tombfile%%\.*}
|
|
|
|
# load key from options or file
|
|
tombkey=`load_key ${tombdir}/${tombfile}`
|
|
{ test $? = 0 } || {
|
|
die "Aborting operations: error loading key $tombkey" }
|
|
# make sure to call drop_key later
|
|
|
|
local tmp_resize=`safe_filename tmbrsz`
|
|
local newtombsize=$opts[-s]
|
|
local oldtombsize=$(( `stat -c %s "$1" 2>/dev/null` / 1048576 ))
|
|
local mounted_tomb=`mount -l |
|
|
awk -vtomb="[$tombname]" '/^\/dev\/mapper\/tomb/ { if($7==tomb) print $1 }'`
|
|
|
|
if [ "$mounted_tomb" ]; then
|
|
_failure "the tomb $tombname is open, to resize it it needs to be close."
|
|
fi
|
|
|
|
if ! [ "$newtombsize" ] ; then
|
|
_failure "You must specify the new size of $tombname"
|
|
elif [[ $newtombsize != <-> ]]; then
|
|
_failure "Size is not an integer"
|
|
elif [ "$newtombsize" -le "$oldtombsize" ]; then
|
|
_failure "the new size must be greater then old tomb size."
|
|
fi
|
|
|
|
delta="$(( $newtombsize - $oldtombsize ))"
|
|
|
|
act "Generating ${tombfile} of ${newtombsize}MiB"
|
|
|
|
xxx "Data dump using ${DD[1]} from /dev/urandom"
|
|
${=DD} if=/dev/urandom bs=1048576 count=${delta} 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}" >> ${tombdir}/${tombfile}
|
|
rm "${tmp_resize}"
|
|
|
|
|
|
tombpass=`ask_key_password $tombkey`
|
|
{ test $? = 0 } || {
|
|
die "No valid password supplied" }
|
|
|
|
local nstloop=`losetup -f`
|
|
if [ $? = 255 ]; then
|
|
_failure "too many tomb opened. Please close any of them to open another tomb"
|
|
fi
|
|
|
|
losetup -f ${tombdir}/${tombfile}
|
|
|
|
local mapdate=`date +%s`
|
|
local mapper="tomb.${tombname}.${mapdate}.`basename $nstloop`"
|
|
|
|
get_lukskey "${tombpass}" ${tombkey} | \
|
|
cryptsetup --key-file - luksOpen ${nstloop} ${mapper}
|
|
|
|
unset tombpass
|
|
drop_key # cleanup after load_key
|
|
|
|
if ! [ -r /dev/mapper/${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
|
|
}
|
|
|
|
# }}}
|
|
|
|
# {{{ Close
|
|
|
|
umount_tomb() {
|
|
local tombs how_many_tombs
|
|
local pathmap mapper tombname tombmount loopdev
|
|
local ans pidk pname
|
|
|
|
if [ "$1" = "all" ]; then
|
|
mounted_tombs=(`list_tomb_mounts`)
|
|
else
|
|
mounted_tombs=(`list_tomb_mounts $1`)
|
|
fi
|
|
|
|
{ test ${#mounted_tombs} = 0 } && {
|
|
_warning "There is no open tomb to be closed"
|
|
return 1 }
|
|
|
|
{ test ${#mounted_tombs} -gt 1 } && { test "$1" = "" } && {
|
|
_warning "Too many tombs mounted, please specify one (see tomb list)"
|
|
_warning "or issue the command 'tomb close all' to close them all."
|
|
return 1 }
|
|
|
|
say "Tomb close $1"
|
|
|
|
for t in ${mounted_tombs}; do
|
|
mapper=`basename ${t[(ws:;:)1]}`
|
|
tombname=${t[(ws:;:)5]}
|
|
tombmount=${t[(ws:;:)2]}
|
|
tombfs=${t[(ws:;:)3]}
|
|
tombfsopts=${t[(ws:;:)4]}
|
|
tombloop=${mapper[(ws:.:)4]}
|
|
|
|
xxx "name: $tombname"
|
|
xxx "mount: $tombmount"
|
|
xxx "mapper: $mapper"
|
|
|
|
{ test -e "$mapper" } && {
|
|
_warning "Tomb not found: $1"
|
|
_warning "Please specify an existing tomb."
|
|
return 0 }
|
|
|
|
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
|
|
say "Closing tomb $tombname mounted on $tombmount"
|
|
fi
|
|
|
|
# check if there are binded dirs and close them
|
|
bind_tombs=(`list_tomb_binds $tombname`)
|
|
for b in ${bind_tombs}; do
|
|
bind_mapper="${b[(ws:;:)1]}"
|
|
bind_mount="${b[(ws:;:)2]}"
|
|
_message "closing tomb bind hook: $bind_mount"
|
|
umount $bind_mount
|
|
if [[ $? != 0 ]]; then
|
|
if [ $SLAM ]; then
|
|
_success "Slamming tomb: killing all processes using this hook"
|
|
slam_tomb "$bind_mount"
|
|
if [[ $? == 1 ]]; then
|
|
_warning "Cannot slam the bind hook $bind_mount"
|
|
return 1
|
|
fi
|
|
umount $bind_mount
|
|
else
|
|
_warning "Tomb bind hook $bind_mount is busy, cannot close tomb."
|
|
fi
|
|
fi
|
|
done
|
|
|
|
# Execute post-hooks for eventual cleanup
|
|
if ! option_is_set -n ; then
|
|
exec_safe_post_hooks ${tombmount%%/} close
|
|
fi
|
|
|
|
xxx "performing umount of $tombmount"
|
|
umount ${tombmount}
|
|
if ! [ $? = 0 ]; then _warning "Tomb is busy, cannot umount!"
|
|
else
|
|
# this means we used a "default" mount point
|
|
{ test "${tombmount}" = "/media/${tombname}.tomb" } && {
|
|
rmdir ${tombmount} }
|
|
fi
|
|
|
|
cryptsetup luksClose $mapper
|
|
{ test $? = 0 } || {
|
|
_warning "error occurred in cryptsetup luksClose ${mapper}"
|
|
return 1 }
|
|
|
|
losetup -d "/dev/$tombloop"
|
|
|
|
_success "Tomb $tombname closed: your bones will rest in peace."
|
|
|
|
done # loop across mounted tombs
|
|
|
|
return 0
|
|
}
|
|
|
|
# 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 "$1" 2> /dev/null` ]]; then
|
|
return 0
|
|
fi
|
|
if ! option_is_set -f; then
|
|
sleep 3
|
|
fi
|
|
done
|
|
return 1
|
|
}
|
|
|
|
# }}} - Tomb close
|
|
|
|
# {{{ Main routine
|
|
|
|
main() {
|
|
local -A subcommands_opts
|
|
### Options configuration
|
|
|
|
# Hi, dear developer! Are you trying to add a new subcommand, or
|
|
# to add some options? Well, keep in mind that an option CAN'T
|
|
# have differente meanings/behaviour in different subcommands.
|
|
|
|
# For example, "-s" means "size" and accept an argument. If you are tempted to add
|
|
# an option "-s" (that means, for example "silent", and doesn't accept an argument)
|
|
# DON'T DO IT!
|
|
|
|
# There are two reasons for that:
|
|
# I. usability; user expect that "-s" is "size"
|
|
# II. Option parsing WILL EXPLODE if you do this kind of bad things
|
|
# (it will say "option defined more than once, and he's right")
|
|
#
|
|
# If you want to use the same option in multiple commands then
|
|
# you can only use the non-abbreviated long-option version like:
|
|
# -force and NOT -f
|
|
main_opts=(q -quiet=q D -debug=D h -help=h v -version=v U: -uid=U G: -gid=G T: -tty=T -no-color -unsecure-dev-mode)
|
|
subcommands_opts[__default]=""
|
|
subcommands_opts[open]="f n -nohook=n k: -key=k o: -mount-options=o -ignore-swap -sudo-pwd: -tomb-pwd:"
|
|
subcommands_opts[mount]=${subcommands_opts[open]}
|
|
|
|
subcommands_opts[create]="f -force -ignore-swap s: -size=s k: -key=k -kdf: -sudo-pwd: -tomb-pwd: -use-urandom"
|
|
|
|
subcommands_opts[forge]="f -force -ignore-swap k: -key=k -kdf: -tomb-pwd: -use-urandom"
|
|
subcommands_opts[dig]="f -forge -ignore-swap s: -size=s"
|
|
subcommands_opts[lock]="f -force -ignore-swap s: -size=s k: -key=k -sudo-pwd: -tomb-pwd:"
|
|
|
|
subcommands_opts[passwd]="f -ignore-swap -kdf: -tomb-old-pwd: -tomb-pwd: "
|
|
subcommands_opts[close]="-sudo-pwd:"
|
|
subcommands_opts[help]=""
|
|
subcommands_opts[slam]=""
|
|
subcommands_opts[list]="-get-mountpoint"
|
|
|
|
subcommands_opts[index]=""
|
|
subcommands_opts[search]=""
|
|
|
|
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[resize]="f -force -ignore-swap s: -size=s k: -key=k -tomb-pwd:"
|
|
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
|
|
|
|
# when we run as root, we remember the original uid:gid
|
|
# to set permissions for the calling user and drop privileges
|
|
if option_is_set -U; then _uid="`option_value -U`"; fi
|
|
if option_is_set -G; then _gid="`option_value -G`"; fi
|
|
if option_is_set -T; then _tty="`option_value -T`"; fi
|
|
|
|
xxx "Tomb command: $subcommand ${PARAM}"
|
|
xxx "caller uid[$_uid] gid[$_gid] tty[$_tty]"
|
|
|
|
case "$subcommand" in
|
|
|
|
# new creation in three steps
|
|
forge)
|
|
check_priv
|
|
forge_key ${=PARAM}
|
|
;;
|
|
dig)
|
|
dig_tomb ${=PARAM}
|
|
;;
|
|
lock)
|
|
check_priv
|
|
lock_tomb_with_key ${=PARAM}
|
|
;;
|
|
# backward compat
|
|
create)
|
|
check_priv
|
|
create_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]
|
|
;;
|
|
|
|
index)
|
|
index_tombs $PARAM[1]
|
|
;;
|
|
search)
|
|
search_tombs ${=PARAM}
|
|
;;
|
|
|
|
help)
|
|
usage
|
|
;;
|
|
bury)
|
|
if [ "$STEGHIDE" = 0 ]; then
|
|
_warning "steghide not installed. Cannot bury your key"
|
|
return 1
|
|
fi
|
|
bury_key $PARAM[1] $PARAM[2]
|
|
;;
|
|
exhume)
|
|
if [ "$STEGHIDE" = 0 ]; then
|
|
_warning "steghide not installed. Cannot exhume your key"
|
|
return 1
|
|
fi
|
|
exhume_key $PARAM[1] $PARAM[2]
|
|
;;
|
|
resize)
|
|
if [ "$RESIZER" = 0 ]; then
|
|
_warning "resize2fs not installed. Cannot resize your tomb."
|
|
return 1
|
|
fi
|
|
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 ;;
|
|
|
|
__default)
|
|
cat <<EOF
|
|
Tomb $VERSION - a strong and gentle undertaker for your secrets
|
|
|
|
Copyright (C) 2007-2013 Dyne.org Foundation, License GNU GPL v3+
|
|
This is free software: you are free to change and redistribute it
|
|
The latest Tomb sourcecode is published on <http://tomb.dyne.org>
|
|
EOF
|
|
option_is_set -v && {
|
|
cat <<EOF
|
|
|
|
GnuPG available ciphers:
|
|
`list_gnupg_ciphers`
|
|
EOF
|
|
return 0
|
|
}
|
|
usage
|
|
;;
|
|
*)
|
|
_warning "command \"$subcommand\" not recognized"
|
|
_message "try -h for help"
|
|
return 1
|
|
;;
|
|
esac
|
|
return $?
|
|
}
|
|
|
|
# }}}
|
|
|
|
# {{{ Run
|
|
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:
|