init python rewrite

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GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The licenses for most software are designed to take away your
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When we speak of free software, we are referring to freedom, not
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TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. This License applies to any program or other work which contains
a notice placed by the copyright holder saying it may be distributed
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END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
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convey the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
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This program is distributed in the hope that it will be useful,
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:
Gnomovision version 69, Copyright (C) year name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, the commands you use may
be called something other than `show w' and `show c'; they could even be
mouse-clicks or menu items--whatever suits your program.
You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Library General
Public License instead of this License.

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#
# Makefile for the cryptobox web-interface
#
# Copyright (c) 02006 senselab
#
CRYPTOBOX_ROOT = .
PREFIX = /usr/local
SHARE_DIR = $(PREFIX)/share/cryptobox
LIB_DIR = $(PREFIX)/lib/cryptobox
DOC_DIR = $(PREFIX)/share/doc/cryptobox
BUILD_DIR = build_dir
INSTALL = install
OS_TYPE=$(shell uname -o | tr [:upper:] [:lower:] | sed s/[^a-z0-9\._\-]/_/g)
.PHONY: install clean build
build:
$(INSTALL) -d -m 755 $(BUILD_DIR)/etc
$(INSTALL) -c -m 644 conf-examples/cryptobox.conf $(BUILD_DIR)/etc/
@sed -i 's#^HTML_TEMPLATE_DIR=.*$$#HTML_TEMPLATE_DIR=$(SHARE_DIR)/templates#' $(BUILD_DIR)/etc/cryptobox.conf
@sed -i 's#^LANGUAGE_DIR=.*$$#LANGUAGE_DIR=$(SHARE_DIR)/lang#' $(BUILD_DIR)/etc/cryptobox.conf
@sed -i 's#^DOC_DIR=.*$$#DOC_DIR=$(DOC_DIR)/html#' $(BUILD_DIR)/etc/cryptobox.conf
@sed -i 's#^CONFIG_DEFAULTS_DIR=.*$$#CONFIG_DEFAULTS_DIR=$(SHARE_DIR)/defaults#' $(BUILD_DIR)/etc/cryptobox.conf
# choose the appropriate program_locations.conf
if test -e conf-examples/distributions/$(OS_TYPE) ; \
then cat conf-examples/distributions/$(OS_TYPE) ;\
else cat conf-examples/distributions/default ;\
fi >$(BUILD_DIR)/etc/distribution.conf
# compile the suid wrapper
$(MAKE) -C bin LIB_DIR=$(LIB_DIR)
@touch $(BUILD_DIR)-stamp
install: $(BUILD_DIR)-stamp
$(INSTALL) -d -m 755 $(LIB_DIR)
$(INSTALL) -c -m 755 bin/cbox-manage.sh $(LIB_DIR)
$(INSTALL) -c -m 755 bin/cbox-root-actions.sh $(LIB_DIR)
$(INSTALL) -c -m 755 bin/cryptobox.pl $(LIB_DIR)
$(INSTALL) -c -m 755 bin/cryptobox_cgi_wrapper $(LIB_DIR)
$(INSTALL) -c -m 4755 bin/cryptobox_root_wrapper $(LIB_DIR)
$(INSTALL) -d -m 755 $(SHARE_DIR)/lang
$(INSTALL) -c -m 644 lang/* $(SHARE_DIR)/lang/
$(INSTALL) -d -m 755 $(SHARE_DIR)/templates
$(INSTALL) -c -m 644 templates/*.cs $(SHARE_DIR)/templates
$(INSTALL) -d -m 755 $(SHARE_DIR)/defaults
$(INSTALL) -c -m 644 conf-examples/default-settings/* $(SHARE_DIR)/defaults/
$(INSTALL) -d -m 755 $(SHARE_DIR)/html
$(INSTALL) -c -m 644 www-data/*.css $(SHARE_DIR)/html/
$(INSTALL) -c -m 644 www-data/*.png $(SHARE_DIR)/html/
$(INSTALL) -c -m 644 www-data/*.gif $(SHARE_DIR)/html/
#$(INSTALL) -d -m 755 $(SHARE_DIR)/html/screenshots
#$(INSTALL) -c -m 644 www-data/screenshots/*.png $(SHARE_DIR)/html/screenshots/
$(INSTALL) -d -m 755 $(DOC_DIR)/html/en
$(INSTALL) -d -m 755 $(DOC_DIR)/html/de
$(INSTALL) -c -m 644 doc/html/en/* $(DOC_DIR)/html/en/
$(INSTALL) -c -m 644 doc/html/de/* $(DOC_DIR)/html/de/
$(INSTALL) -d -m 755 $(SHARE_DIR)/distributions
$(INSTALL) -c -m 644 conf-examples/distributions/* $(SHARE_DIR)/distributions/
clean:
$(MAKE) -C bin clean
-rm -rf $(BUILD_DIR)
-rm -f $(BUILD_DIR)-stamp

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link cbox-tree.d/usr/share/doc/cryptobox/README

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# Makefile to compile the binary suid-wrapper for cryptobox
#
# LIB_DIR should be defined in the higher level Makefile
#
HEADER_FILE = cryptobox_wrapper.h
SRC_FILE = cryptobox_wrapper.c
CGI_SUID_FILE = cryptobox_cgi_wrapper
ROOT_SUID_FILE = cryptobox_root_wrapper
CGI_FILENAME = cryptobox.pl
ROOT_SCRIPT_FILENAME = cbox-root-actions.sh
# fall back to default, if not overwritten
LIB_DIR = /usr/local/lib/cryptobox
# _always_ recompile (in case of a changed LIB_DIR)
.PHONY: build clean $(CGI_SUID_FILE) $(ROOT_SUID_FILE)
build: $(CGI_SUID_FILE) $(ROOT_SUID_FILE)
$(CGI_SUID_FILE): $(SRC_FILE)
@echo '#define EXEC_PATH "$(LIB_DIR)/$(CGI_FILENAME)"' >$(HEADER_FILE)
$(CC) -o $(CGI_SUID_FILE) $(SRC_FILE)
-rm $(HEADER_FILE)
$(ROOT_SUID_FILE): $(SRC_FILE)
@echo '#define EXEC_PATH "$(LIB_DIR)/$(ROOT_SCRIPT_FILENAME)"' >$(HEADER_FILE)
$(CC) -o $(ROOT_SUID_FILE) $(SRC_FILE)
-rm $(HEADER_FILE)
clean:
-rm -f $(CGI_SUID_FILE) $(ROOT_SUID_FILE) $(HEADER_FILE)

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#!/bin/sh
#
# Copyright (c) 02005 sense.lab <senselab@systemausfall.org>
#
# License: This script is distributed under the terms of version 2
# of the GNU GPL. See the LICENSE file included with the package.
#
# $Id$
#
# this script does EVERYTHING
# all other scripts are only frontends :)
#
# called by:
# - some rc-scripts
# - the web frontend cgi
#
# TODO: check permissions and owners of config files, directories and scripts before
# running cbox-root-actions.sh
set -eu
# default location of config file
CONF_FILE=/etc/cryptobox/cryptobox.conf
LIB_DIR=$(dirname "$0")
# to determine a nice default partition name
DEVICE_NAME_PREFIX="Disk #"
# read the default setting file, if it exists
test -e /etc/default/cryptobox && . /etc/default/cryptobox
test ! -e "$CONF_FILE" && echo "Could not find the configuration file: $CONF_FILE" >&2 && exit 1
# parse config file
. "$CONF_FILE"
test ! -e "$CONF_FILE" && echo "Could not find the distribution specific configuration file: $CONF_FILE" >&2 && exit 1
# parse the distribution specific file
. "$DISTRIBUTION_CONF"
# check for writable log file
test -w "$LOG_FILE" || LOG_FILE=/tmp/$(basename "$LOG_FILE")
# retrieve configuration directory
CONFIG_DIR="$(getent passwd $CRYPTOBOX_USER | cut -d ':' -f 6)/config"
CONFIG_MARKER=cryptobox.marker
## configuration
ROOT_PERM_SCRIPT="$LIB_DIR/cryptobox_root_wrapper"
# ROOT_PERM_SCRIPT needs the MNT_PARENT setting
export MNT_PARENT="$(cd ~; pwd)/mnt"
######## stuff ##########
# all partitions with a trailing number
ALL_PARTITIONS=$(cat /proc/partitions | sed '1,2d; s/ */ /g; s/^ *//' | cut -d " " -f 4 | grep '[0-9]$')
#########################
function log_msg()
{
# the log file is (maybe) not writable during boot - try
# before writing ...
test -w "$LOG_FILE" || return 0
echo >>"$LOG_FILE"
echo "##### `date` #####" >>"$LOG_FILE"
echo "$1" >>"$LOG_FILE"
}
function error_msg()
# parameters: ExitCode ErrorMessage
{
local all=$@
test $# -ne 2 && error_msg 1 "*** invalid call of error_msg *** $all"
echo "[`date`] - $2" | tee -a "$LOG_FILE" >&2
# print the execution stack - not usable with busybox
# caller | sed 's/^/\t/' >&2
exit "$1"
}
# Parameter: device
function is_device_allowed() {
# check for invalid characters and exit if one is found
local device=$(echo "$1" | sed 's#[^a-zA-Z0-9_\-\./]##g')
test "$1" = "$device" || return 1
# remove leading "/dev/"
device=$(echo "$device" | sed 's#^/dev/##')
# return for empty name
test -z "$device" && return 1
for a in $ALL_PARTITIONS
do echo "$device" | grep -q "^$a.*" && return 0
done
# no matching device found - exit with error
return 1
}
function config_set_value()
# parameters: SettingName [SettingValue]
# read from stdin if SettingValue is not defined
{
if test $# -gt 1
then echo "$2" > "$CONFIG_DIR/$1"
else cat - >"$CONFIG_DIR/$1"
fi
}
function config_get_value()
# parameters: SettingName
{
# use mounted config, if it exists - otherwise use defaults
local conf_dir
test -z "$1" && error_msg 1 "empty setting name"
# check for existence - maybe use default values (even for old
# releases that did not contain this setting)
if test -e "$CONFIG_DIR/$1"
then cat "$CONFIG_DIR/$1"
elif test -e "$CONFIG_DEFAULTS_DIR/$1"
then cat "$CONFIG_DEFAULTS_DIR/$1"
else case "$1" in
# you may place default values for older versions here
# for compatibility
* )
error_msg 2 "unknown configuration value ($1)"
;;
esac
fi
return 0
}
function list_partitions_of_type()
# parameter: { config | crypto | plaindata | unused }
{
local config=
local crypto=
local plaindata=
local unused=
for a in $ALL_PARTITIONS
do if "$ROOT_PERM_SCRIPT" is_crypto_partition "/dev/$a"
then crypto="$crypto /dev/$a"
elif "$ROOT_PERM_SCRIPT" is_config_partition "/dev/$a"
then config="$config /dev/$a"
elif "$ROOT_PERM_SCRIPT" is_plaindata_partition "/dev/$a"
then plaindata="$plaindata /dev/$a"
else unused="$unused /dev/$a"
fi
done
case "$1" in
config )
echo "$config"
;;
crypto )
echo "$crypto"
;;
plaindata )
echo "$plaindata"
;;
unused )
echo "$unused"
;;
* )
error_msg 11 "wrong parameter ($1) for list_partition_types in $(basename $0)"
;;
esac | tr " " "\n" | grep -v '^$'
return 0
}
# Parameter: DEVICE
function get_device_mnt_name() {
"$ROOT_PERM_SCRIPT" get_device_mnt_name "$1"
}
# Parameter: DEVICE
function get_device_uuid() {
"$ROOT_PERM_SCRIPT" get_device_uuid "$1"
}
# Parameter: DEVICE
# return the readable name of the crypto container, if it is already defined
# if undefined - return the uuid
function get_device_name() {
local uuid=$(get_device_uuid "$1")
local dbname=$(config_get_value "names.db" | grep "^$uuid:" | cut -d ":" -f 2-)
# return dbname if it exists
test -n "$dbname" && echo "$dbname" && return 0
# find a nice name for the new partition
local counter=1
local test_name
local test_uuid
local test_result
# try to find a name with the defined "prefix" followed by a number ...
while true
do test_name="$DEVICE_NAME_PREFIX$counter"
if config_get_value "names.db" | grep -q ":$test_name$"
then counter=$((counter+1))
else # save it for next time
set_device_name "$1" "$test_name"
echo "$test_name"
return 0
fi
done
}
function set_device_name()
# TODO: the implementation is quite ugly, but it works (tm)
# Parameter: DEVICE NAME
{
local uuid=$(get_device_uuid "$1")
# remove the old setting for this device and every possible entry with the same name
local new_config=$(config_get_value 'names.db' | sed "/^$uuid:/d; /^[^:]*:$2$/d"; echo "$uuid:$2")
echo "$new_config" | config_set_value "names.db"
}
function does_crypto_name_exist()
# Parameter: NAME
{
config_get_value 'names.db' | grep -q "^[^:]*:$1$"
}
function create_crypto()
# Parameter: DEVICE NAME KEYFILE
# keyfile is necessary, to allow background execution via 'at'
{
local device=$1
local name=$2
local keyfile=$3
# otherwise the web interface will hang
# passphrase may be passed via command line
local key=$(<"$keyfile")
# remove the passphrase-file as soon as possible
dd if=/dev/zero of="$keyfile" bs=512 count=1 2>/dev/null
rm "$keyfile"
log_msg "Creating crypto partition with the cipher $DEFAULT_CIPHER on $device"
echo "$key" | "$ROOT_PERM_SCRIPT" create_crypto "$device"
set_crypto_name "$device" "$name"
}
function is_config_active() {
test -f "$CONFIG_DIR/$CONFIG_MARKER"
}
# Parameter: DEVICE
function is_mounted() {
local name=$(get_device_mnt_name "$1")
test -n "$name" && mountpoint -q "$MNT_PARENT/$name"
}
# Parameter: DEVICE
function is_plain() {
"$ROOT_PERM_SCRIPT" is_plain_partition "$1"
}
# Parameter: DEVICE
function is_encrypted() {
"$ROOT_PERM_SCRIPT" is_crypto_partition "$1"
}
# list which allowed disks are at the moment connected with the cbox
function get_available_disks() {
for scan in $SCAN_DEVICES
do for avail in $ALL_PARTITIONS
do echo "$avail" | grep -q "^$scan[^/]*" && echo "/dev/$avail"
done
done
return 0
}
# Parameter: DEVICE
function mount_crypto() {
local device=$1
test -z "$device" && error_msg 4 'No valid harddisk found!'
is_mounted "$device" && echo "The crypto filesystem is already active!" && return
# passphrase is read from stdin
log_msg "Mounting a crypto partition from $device"
"$ROOT_PERM_SCRIPT" mount "$device" >>"$LOG_FILE" 2>&1
}
function umount_partition() {
# Parameter: device
local container=$(get_device_name "$1")
"$ROOT_PERM_SCRIPT" umount "$1"
}
function box_purge()
# removing just the first bytes from the harddisk should be enough
# every harddisk will be overriden!
# this feature is only useful for validation
{
# TODO: not ALL harddisks, please!
get_available_disks | while read a
do log_msg "Purging $a ..."
"$ROOT_PERM_SCRIPT" trash_device "$a"
done
}
function turn_off_all_containers() {
# TODO - needs to be implemented
return 0
}
### main ###
# set PATH because thttpd removes /sbin and /usr/sbin for cgis
export PATH=/usr/sbin:/usr/bin:/sbin:/bin
ACTION=help
test $# -gt 0 && ACTION=$1 && shift
case "$ACTION" in
crypto-up )
test $# -ne 1 && error_msg 10 "invalid number of parameters for 'crypto-up'"
is_device_allowed "$1" || error_msg 12 "invalid device: $1"
mount_crypto "$1"
;;
crypto-down )
test $# -ne 1 && error_msg 10 "invalid number of parameters for 'crypto-down'"
is_device_allowed "$1" || error_msg 12 "invalid device: $1"
umount_partition "$1"
;;
init )
init_cryptobox </dev/null >>"$LOG_FILE" 2>&1
;;
list_container )
test $# -ne 1 && error_msg 10 "invalid number of parameters for 'list_container'"
case "$1" in
config | unused | plaindata | crypto )
list_partitions_of_type "$1"
;;
* )
return 1
;;
esac
return 0
;;
get_device_name )
# Parameter: DEVICE
test $# -ne 1 && error_msg 10 "invalid number of parameters for 'get_device_name'"
is_device_allowed "$1" || error_msg 12 "invalid device: $1"
get_device_name "$1"
;;
set_device_name )
# Parameter: DEVICE NAME
test $# -ne 2 && error_msg 10 "invalid number of parameters for 'set_device_name'"
is_device_allowed "$1" || error_msg 12 "invalid device: $1"
set_device_name "$1" "$2"
;;
device_init )
# Parameter: DEVICE [KEYFILE]
test $# -lt 1 && error_msg 10 "invalid number of parameters for 'device_init' ($@)"
test $# -gt 2 && error_msg 10 "invalid number of parameters for 'device_init' ($@)"
if test $# -eq 2
then test -z "$2" -o ! -e "$2" && error_msg 11 "invalid keyfile ($2) given for 'device_init'"
fi
is_device_allowed "$1" || error_msg 12 "invalid device: $1"
if test $# -eq 2
then "$ROOT_PERM_SCRIPT" create_crypto "$1" "$2"
else "$ROOT_PERM_SCRIPT" create_plain "$1"
fi
true
;;
is_mounted )
test $# -ne 1 && error_msg 10 "invalid number of parameters for 'is_mounted'"
is_device_allowed "$1" || error_msg 12 "invalid device: $1"
is_mounted "$1"
;;
is_encrypted )
test $# -ne 1 && error_msg 10 "invalid number of parameters for 'is_encrypted'"
is_device_allowed "$1" || error_msg 12 "invalid device: $1"
is_encrypted "$1"
;;
is_plain )
test $# -ne 1 && error_msg 10 "invalid number of parameters for 'is_plain'"
is_device_allowed "$1" || error_msg 12 "invalid device: $1"
is_plain "$1"
;;
check_config)
is_config_active
;;
get_available_disks )
get_available_disks
;;
set_config )
test $# -ne 2 && error_msg 7 "'set_config' requires two parameters"
config_set_value "$1" "$2"
;;
get_config )
test $# -ne 1 && error_msg 6 "'get_config' requires exactly one parameter"
config_get_value "$1"
;;
get_capacity_info )
test $# -ne 1 && error_msg 6 "'get_capacity_info' requires exactly one parameter"
is_device_allowed "$1" || error_msg 12 "invalid device: $1"
is_mounted "$1" || error_msg 13 "the device is not mounted: $1"
name=$(get_device_mnt_name "$1")
df -h "$MNT_PARENT/$name" | tail -1
;;
diskinfo )
get_available_disks | while read a
do "$ROOT_PERM_SCRIPT" diskinfo "$a"
done 2>/dev/null
;;
box-purge )
log_msg "Cleaning the CryptoBox ..."
turn_off_all_containers
"$0" config-down
box_purge >>"$LOG_FILE" 2>&1
;;
poweroff )
log_msg "Shutting down the Cryptobox ..."
turn_off_all_containers
"$ROOT_PERM_SCRIPT" poweroff
;;
reboot )
log_msg "Rebooting the Cryptobox ..."
turn_off_all_containers
"$ROOT_PERM_SCRIPT" reboot
;;
umount_all )
log_msg "Unmounting all volumes ..."
turn_off_all_containers
;;
* )
echo "[$(basename $0)] - unknown action: $ACTION" >&2
echo "Syntax: $(basename $0) ACTION [PARAMS]"
echo " crypto-up - mount crypto partition"
echo " crypto-down - unmount crypto partition"
echo " crypto-create - a wrapper for 'crypto-create-bg'"
echo " crypto-create-bg - create encrypted blockdevice and run mkfs"
echo " is_mounted - check, if crypto partition is mounted"
echo " check_config - check, if the configuration is usable"
echo " get_available_disks - shows all accessible disks"
echo " get_current_ip - get the current IP of the network interface"
echo " set_config NAME VALUE - change a configuration setting"
echo " get_config NAME - retrieve a configuration setting"
echo " get_device_name DEVICE - retrieve the human readable name of a partition"
echo " set_device_name DEVICE - set the human readable name of a partition"
echo " device_init DEVICE KEYFILE - initialize the filesystem of a partition (the keyfile just contains the passphrase)"
echo " get_capacity_info - print the output of 'df' for the (mounted) partition"
echo " diskinfo - show the partition table of the harddisk"
echo " box-purge - destroy the partition tables of all harddisks (delete everything)"
echo " poweroff - turn off the computer"
echo " reboot - reboot the computer"
echo
;;
esac
exit 0

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@ -0,0 +1,341 @@
#!/bin/sh
#
# Copyright (c) 02005 sense.lab <senselab@systemausfall.org>
#
# License: This script is distributed under the terms of version 2
# of the GNU GPL. See the LICENSE file included with the package.
#
# $Id$
#
# this script is responsible for all dangerous actions, that require root privileges
# every action should be checked at least TWICE a day for open holes :)
# usually will get call via sudo
#
# called by:
# - cbox-manage.sh
#
set -eu
LIB_DIR=$(dirname "$0")
LIB_DIR=$(cd "$LIB_DIR"; pwd)
test "$(id -u)" -ne 0 && echo "$(basename $0) - only root may call this script" >&2 && exit 100
# read the default setting file, if it exists
test -e /etc/default/cryptobox && . /etc/default/cryptobox
# set CONF_FILE to default value, if not configured in /etc/default/cryptobox
CONF_FILE=${CONF_FILE:-/etc/cryptobox/cryptobox.conf}
# parse config file
. "$CONF_FILE"
# parse distribution specific file
. "$DISTRIBUTION_CONF"
CB_SCRIPT="$LIB_DIR/cbox-manage.sh"
CONFIG_MARKER=cryptobox.marker
############ some useful functions ###############
# check if the given device is part of the SCAN_DEVICE list
# every entry in SCAN_DEVICES is matched as "^/dev/${SCAN_DEVICE}[^/]*$" against
# the given device
# other devices may not be touched
function is_device_allowed()
# parameter: device
{
for a in $SCAN_DEVICES
do echo "$1" | grep -q "^/dev/${a}[^/]*$" && return 0
done
return 1
}
# return the uuid of the partition (if possible)
# this works at least for luks, ext2/3 and vfat partitions
function get_device_uuid() {
local UUID
# check for luksUUID or ext2/3-uuid
if is_luks_device "$1"
then UUID=$("$CRYPTSETUP" luksUUID "$1")
else test -x "$BLKID" && UUID=$("$BLKID" -s UUID -o value -c /dev/null -w /dev/null "$1" 2>/dev/null)
fi
if test -z "$UUID"
then get_device_flat_name "$1"
else echo "$UUID"
fi
return 0
}
# the device name is "flattened"
function get_device_flat_name() {
echo "$1" | sed 's#/#_#g'
}
# the basename of the mountpoint for this device - should be somehow human_readable
function get_device_mnt_name() {
"$CB_SCRIPT" get_device_name "$1"
}
# every devmapper name should look like a UUID
function is_uuid_valid() {
local hex=[0-9a-f]
echo "$1" | grep -q "^$hex\{8\}-$hex\{4\}-$hex\{4\}-$hex\{4\}-$hex\{12\}$"
}
# parameter ExitCode ErrorMessage
function error_msg() {
echo "CBOX-ERROR: [$(basename $0) - $ACTION] - $2" >&2
exit $1
}
# parameter: device sfdisk_layout_setup
# e.g.: /dev/hda "0,1,L \n,,L\n"
function partition_device() {
# TODO: allow different layouts
# TODO: skip config partition if a configuration is already active
# sfdisk -n doesn't actually write (for testing purpose)
if echo -e "$2" | "$SFDISK" -n "$1"
then echo -e "$2" | "$SFDISK" "$1" || return 1
else return 2
fi
true
}
function is_luks_device()
# parameter: device
{
"$CRYPTSETUP" isLuks "$1" 2>/dev/null
}
################ main ####################
ACTION=unknown
test $# -gt 0 && ACTION=$1 && shift
case "$ACTION" in
partition_disk )
test $# -ne 2 && error_msg 1 "wrong number of parameters"
is_device_allowed "$1" || \
error_msg 3 "this device ($1) is not listed in SCAN_DEVICES (see $CONF_FILE)"
partition_device "$1" "$2" || \
error_msg 2 "failed to create new partition table on device $1"
;;
mount )
# parameters: device
# returns the relative name of the mointpoint for success
test $# -ne 1 && error_msg 1 "wrong number of parameters"
is_device_allowed "$1" || \
error_msg 3 "this device ($1) is not listed in SCAN_DEVICES (see $CONF_FILE)"
mnt_name=$(get_device_mnt_name "$1")
mountpoint -q "$MNT_PARENT/$mnt_name" && \
error_msg 5 "a device with the same name ($mnt_name) is already mounted"
mkdir -p "$MNT_PARENT/$mnt_name"
if is_luks_device "$1"
then "$CRYPTSETUP" luksOpen "$1" "$mnt_name" || \
error_msg 6 "could not open encrypted device $1"
if mount "$DEV_MAPPER_DIR/$mnt_name" "$MNT_PARENT/$mnt_name"
then true
else "$CRYPTSETUP" luksClose "$mnt_name" || true
error_msg 7 "wrong password for $1 supplied"
fi
else mount "$1" "$MNT_PARENT/$mnt_name" || \
error_msg 8 "invalid filesystem on device $1"
fi
# just in case, that there is no ext2/3 filesystem:
# set uid option (will fail silently for ext2/3)
# TODO: there is no FILE_USER setting anymore - do we still need it?
#mount -o remount,uid="$FILE_USER" "$MNT_PARENT/$name" 2>/dev/null || true
# adapt top-level permission to current setup - again: may fail silently
#chown "$FILE_USER" "$MNT_PARENT/$name" 2>/dev/null || true
true
;;
umount )
#parameter: device
test $# -ne 1 && error_msg 1 "wrong number of parameters"
is_device_allowed "$1" || \
error_msg 3 "this device ($1) is not listed in SCAN_DEVICES (see $CONF_FILE)"
mnt_name=$(get_device_mnt_name "$1")
mountpoint -q "$MNT_PARENT/$mnt_name" || \
error_msg 9 "the device ($1) is not mounted as '$mnt_name'"
# try to unmount - do it in lazy mode
umount -l "$MNT_PARENT/$mnt_name"
# TODO: check, what happens, if there are open files - does the device gets mapping removed?
# remove (if necessary) the device mapping
if test -e "$DEV_MAPPER_DIR/$mnt_name"
then "$CRYPTSETUP" luksClose "$mnt_name" || \
error_msg 11 "could not remove the device mapper ($mnt_name) for device $1"
fi
# try to remove the mountpoint - a failure is not important
rmdir "$MNT_PARENT/$mnt_name" || true
# set exitcode
mountpoint -q "$MNT_PARENT/$mnt_name" && exit 1
true
;;
create_crypto )
# parameter: device keyfile
test $# -ne 2 && error_msg 1 "wrong number of parameters"
keyfile=$2
test -e "$keyfile" || error_msg 2 "keyfile ($keyfile) not found"
is_device_allowed "$1" || \
error_msg 3 "this device ($1) is not listed in SCAN_DEVICES (see $CONF_FILE)"
# read the passphrase from stdin
# the iter-time is in milliseconds - keep it low for fast mounting
cat "$keyfile" | \
"$CRYPTSETUP" --cipher "$DEFAULT_CIPHER" --iter-time 2000 --batch-mode luksFormat "$1" || \
error_msg 11 "failed to create the encrypted partition"
name=$(get_device_mnt_name "$1")
cat "$keyfile" | "$CRYPTSETUP" --batch-mode luksOpen "$1" "$name" || \
error_msg 12 "failed to open the encrypted partition"
# trash the passphrase in keyfile
echo "0123456789abcdefghijklmnopqrstuvwxyz" > "$keyfile"
# the disk cache surely prevents the previous line from being written, but we do it anyway ...
echo "zyxwvutsrqponmlkjihgfedcba9876543210" > "$keyfile"
rm "$keyfile"
# complete in background
(
"$MKFS_DATA" "$DEV_MAPPER_DIR/$name" || \
error_msg 13 "failed to create the encrypted filesystem"
"$CRYPTSETUP" --batch-mode luksClose "$name" || \
error_msg 14 "failed to close the encrypted mapped device"
) </dev/null >/dev/null 2>/dev/null &
true
;;
create_plain )
# parameter: device
test $# -ne 1 && error_msg 1 "wrong number of parameters for 'create_plain'"
is_device_allowed "$1" || \
error_msg 3 "this device ($1) is not listed in SCAN_DEVICES (see $CONF_FILE)"
# complete in background
(
"$MKFS_DATA" "$1" || \
error_msg 15 "failed to create the plaintext filesystem"
) </dev/null >/dev/null 2>/dev/null &
true
;;
get_device_mnt_name )
# parameter: device
test $# -ne 1 && error_msg 1 "wrong number of parameters"
is_device_allowed "$1" || \
error_msg 3 "this device ($1) is not listed in SCAN_DEVICES (see $CONF_FILE)"
get_device_mnt_name "$1"
;;
get_device_uuid )
# parameter: device
test $# -ne 1 && error_msg 1 "wrong number of parameters"
is_device_allowed "$1" || \
error_msg 3 "this device ($1) is not listed in SCAN_DEVICES (see $CONF_FILE)"
get_device_uuid "$1"
;;
is_config_partition )
# parameter: device
# returns exitcode 0 if the device contains a configuration
test $# -ne 1 && error_msg 1 "wrong number of parameters"
is_device_allowed "$1" || \
error_msg 3 "this device ($1) is not listed in SCAN_DEVICES (see $CONF_FILE)"
is_config=0
tmp_dir=/tmp/$(basename $0)-$$-mnt
mkdir -p "$tmp_dir"
# error means "no config partition"
if mount "$1" "$CONFIG_DIR"
then test -e "$CONFIG_DIR/$CONFIG_MARKER" && is_config=1
umount "$CONFIG_DIR" || \
error_msg 14 "unable to unmount configation partition after probing"
fi
rmdir "$tmp_dir" || true
# return 0 if $device is a config partition
test "$is_config" -eq 1 && exit 0
exit 1
;;
is_crypto_partition )
# parameter: device
# returns exitcode 0 if the device contains a luks header
test $# -ne 1 && error_msg 1 "wrong number of parameters"
is_device_allowed "$1" || \
error_msg 3 "this device ($1) is not listed in SCAN_DEVICES (see $CONF_FILE)"
is_luks_device "$1"
;;
is_plain_partition )
# parameter: device
# returns exitcode 0 if the device contains a readable filesystem
test $# -ne 1 && error_msg 1 "wrong number of parameters"
is_device_allowed "$1" || \
error_msg 3 "this device ($1) is not listed in SCAN_DEVICES (see $CONF_FILE)"
status=0
tmp_dir=/tmp/$(basename $0)-$$-mnt
mkdir -p "$tmp_dir"
if mount "$1" "$tmp_dir" >/dev/null 2>/dev/null
then test ! -e "$tmp_dir/$CONFIG_MARKER" && status=1
umount "$tmp_dir"
fi
rmdir "$tmp_dir" || true
test "$status" -eq 1 && exit 0
exit 1
;;
trash_device )
# parameter: device
test $# -ne 1 && error_msg 1 "wrong number of parameters"
is_device_allowed "$1" || \
error_msg 3 "this device ($1) is not listed in SCAN_DEVICES (see $CONF_FILE)"
dd if=/dev/urandom of="$1" bs=512 count=1 2>/dev/null
;;
diskinfo )
# parameter: device
test $# -ne 1 && error_msg 1 "wrong number of parameters"
is_device_allowed "$1" || \
error_msg 3 "this device ($1) is not listed in SCAN_DEVICES (see $CONF_FILE)"
"$SFDISK" -L -q -l "$1"
;;
update_network )
# parameter: none
ip=
# TODO: can we avoid to hard-code the filename ($CONFIG_DIR/ip) here?
test -e "$CONFIG_DIR/ip" && ip=$(<"$CONFIG_DIR/ip")
test -n "$z" && ifconfig "$NET_IFACE" "$ip"
;;
poweroff )
# TODO: check configuration setting before
"$POWEROFF"
;;
reboot )
# TODO: check configuration setting before
"$REBOOT"
;;
* )
echo "[$(basename $0)] - unknown action: $ACTION" >&2
echo "Syntax: $(basename $0) ACTION PARAMETERS"
echo ' partition_disk $device $disk_layout'
echo ' get_device_name $device'
echo ' get_device_uuid $device'
echo ' create_crypto $device'
echo ' mount $device'
echo ' umount $name'
echo ' create_config $device'
echo ' mount_config $device'
echo ' remount_config { ro | rw }'
echo ' umount_config'
echo ' is_config_partition $device'
echo ' is_plain_partition $device'
echo ' is_crypto_partition $device'
echo ' trash_device $device'
echo ' diskinfo $device'
echo ' update_network'
echo ' poweroff'
echo ' reboot'
echo ' help'
echo
test "$ACTION" = "help" && exit 0
# return error for any unknown/unspecified action
exit 1
;;
esac

946
pythonrewrite/bin/cryptobox.pl Executable file
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@ -0,0 +1,946 @@
#!/usr/bin/perl
#
# Copyright (c) 02005 sense.lab <senselab@systemausfall.org>
#
# License: This script is distributed under the terms of version 2
# of the GNU GPL. See the LICENSE file included with the package.
#
# $Id$
#
# the web interface of the CryptoBox
#
###############################################
use strict;
use CGI;
use ClearSilver;
use ConfigFile;
use English;
use CGI::Carp;
use IO::File;
use POSIX;
use constant CRYPTOBOX_VERSION => 0.3;
# debug levels
use constant DEBUG_NONE => 0;
use constant DEBUG_ERROR => 1;
use constant DEBUG_WARN => 2;
use constant DEBUG_INFO => 3;
# drop privileges
$UID = $EUID;
$GID = $EGID;
# necessary for suid perl scripts (see 'man perlsec' for details)
$ENV{'PATH'} = '/bin:/usr/bin';
delete @ENV{qw(IFS CDPATH ENV BASH_ENV)}; # Make %ENV safer
my $CONFIG_FILE = '/etc/cryptobox/cryptobox.conf';
my $pagedata;
my ($LANGUAGE_DIR, $DEFAULT_LANGUAGE, $HTML_TEMPLATE_DIR, $DOC_DIR);
my ($CB_SCRIPT, $LOG_FILE, $IS_DEVEL, $STYLESHEET_URL, $DEBUG_LEVEL);
# get the directory of the cryptobox scripts/binaries and untaint it
$CB_SCRIPT = $0;
$CB_SCRIPT =~ m/^(.*)\/[^\/]*$/;
$CB_SCRIPT = ($1)? "$1/cbox-manage.sh" : './cbox-manage.sh';
&fatal_error ("could not find configuration file ($CONFIG_FILE)") unless (-e $CONFIG_FILE);
my $config = ConfigFile::read_config_file($CONFIG_FILE);
$LOG_FILE = $config->{LOG_FILE};
$LANGUAGE_DIR = $config->{LANGUAGE_DIR};
$DEFAULT_LANGUAGE = $config->{LANGUAGE};
$HTML_TEMPLATE_DIR = $config->{HTML_TEMPLATE_DIR};
$DOC_DIR = $config->{DOC_DIR};
$IS_DEVEL = ( -e $config->{DEV_FEATURES_SCRIPT});
$STYLESHEET_URL = $config->{STYLESHEET_URL};
if (defined($config->{DEBUG_LEVEL})) {
$DEBUG_LEVEL = $config->{DEBUG_LEVEL};
} else {
$DEBUG_LEVEL = DEBUG_ERROR; # default debug level
}
my $query = new CGI;
#################### subs ######################
# for fatal errors without the chance of clearsilver-rendering
sub fatal_error() {
my $message = shift;
print "Content-Type: text/html\n\n";
print "<html><head><title>CryptoBox</title></head>\n";
print "<body>\n";
print '<h1 align="center">' . $message . "</h1>\n";
print "</body></html>\n";
die "[CryptoBox]: $message";
}
sub debug_msg() {
my ($level, $message) = @_;
return 0 unless ($level >= $DEBUG_LEVEL);
warn "[cryptobox]: $message";
}
sub load_hdf {
my $hdf = ClearSilver::HDF->new();
my $fname = "$HTML_TEMPLATE_DIR/main.cs";
&fatal_error ("Template directory is invalid ($fname not found)!") unless (-e "$fname");
$hdf->setValue("Settings.TemplateDir","$HTML_TEMPLATE_DIR");
&fatal_error ("Documentation directory ($DOC_DIR) not found!") unless (-d "$DOC_DIR");
$hdf->setValue("Settings.DocDir","$DOC_DIR");
# if it was requested as directory index (link from index.html), we should
# set a real script name - otherwise links with a query string will break
# ignore POST part of the SCRIPT_NAME (after "&")
(my $script_url = $ENV{'SCRIPT_NAME'}) =~ m/^[^&]*/;
$hdf->setValue("ScriptName", ($ENV{'SCRIPT_NAME'} eq '/')? '/cryptobox' : $script_url );
# set stylesheet url
$hdf->setValue("Settings.Stylesheet",$STYLESHEET_URL);
&load_selected_language($hdf);
&get_available_languages($hdf);
return $hdf;
}
sub load_selected_language {
my $data = shift;
my $config_language;
# load $DEFAULT_LANGUAGE - this is necessary, if a translation is incomplete
$data->readFile("$LANGUAGE_DIR/$DEFAULT_LANGUAGE" . ".hdf");
# load configured language, if it is valid
$config_language = &get_cbox_config("language");
$config_language = $DEFAULT_LANGUAGE unless (&validate_language("$config_language"));
# check for preferred browser language, if the box was not initialized yet
if ( ! &check_config())
{
my $prefLang = &get_browser_language();
# take it, if a supported browser language was found
$config_language = $prefLang unless ($prefLang eq '');
}
######### temporary language setting? ############
# the default language can be overriden by the language links in the
# upper right of the page
if ($query->param('weblang')) {
my $weblang = $query->param('weblang');
if (&validate_language($weblang)) {
# load the data
$config_language = "$weblang";
# add the setting to every link
# how it should be done now ...
$data->setValue('Settings.LinkAttrs.weblang', "$weblang");
# old way of doing this ... (TODO: to be removed)
$data->setValue('Data.PostData.weblang', "$weblang");
} else {
# no valid language was selected - so you may ignore it
$data->setValue('Data.Warning', 'InvalidLanguage');
}
}
# import the configured resp. the temporarily selected language
$data->readFile("$LANGUAGE_DIR/$config_language" . ".hdf");
########## select documentation language ##########
if (&validate_doc_language($config_language)) {
# selected web interface language
$data->setValue('Settings.DocLang', "$config_language");
} elsif (&validate_doc_language($DEFAULT_LANGUAGE)) {
# configured CryptoBox language
$data->setValue('Settings.DocLang', "$DEFAULT_LANGUAGE");
} else {
# default hardcoded language (english)
$data->setValue('Settings.DocLang', "en");
}
}
# import the names of all available languages
sub get_available_languages {
my $data = shift;
my ($file, @files, $hdf, $lang_name);
opendir(DIR, $LANGUAGE_DIR) or &fatal_error ("Language directory ($LANGUAGE_DIR) not accessible!");
@files = sort grep { /.*\.hdf$/ } readdir(DIR);
close(DIR);
foreach $file (@files) {
$hdf = ClearSilver::HDF->new();
$hdf->readFile("$LANGUAGE_DIR/$file");
substr($file, -4) = "";
$lang_name = $hdf->getValue("Lang.Name", "$file");
$data->setValue("Data.Languages." . "$file", "$lang_name");
}
}
# look for preferred browser language setting
# this code was adapted from Per Cederberg - http://www.percederberg.net/home/perl/select.perl
# it returns an empty string, if no supported language was found
sub get_browser_language {
my ($str, @langs, @res);
# Use language preference settings
if ($ENV{'HTTP_ACCEPT_LANGUAGE'} ne '')
{
@langs = split(/,/, $ENV{'HTTP_ACCEPT_LANGUAGE'});
foreach (@langs)
{
# get the first part of the language setting
($str) = ($_ =~ m/([a-z]+)/);
# check, if it supported by the cryptobox
$res[$#res+1] = $str if validate_language($str);
}
}
# if everything fails - return empty string
$res[0] = "" if ($#res lt 0);
return $res[0];
}
sub log_msg {
my $text = shift;
open(LOGFILE,">> $LOG_FILE");
print LOGFILE "$text";
close(LOGFILE);
}
sub check_ssl {
# check, if we are behind a proxy with ssl (e.g. pound)
return (0==0) if ($ENV{'HTTP_FRONT_END_HTTPS'} =~ m/^on$/i);
# environment variable set (e.g. via apache directive "SetEnv HTTPS On")
return (0==0) if ($ENV{'HTTPS'} =~ m/^on$/i);
# port 80 -> not encrypted
return (0==1) if ($ENV{'SERVER_PORT'} == 80);
# other ports -> maybe ok - we accept it
return (0==0);
}
# check, if the given device is mounted/used somehow
# Paramter: device
sub check_mounted {
my ($dev) = @_;
return (system($CB_SCRIPT,"is_mounted",$dev) == 0);
}
sub check_config {
return (system($CB_SCRIPT,"check_config") == 0);
}
sub exec_cb_script {
my (@params) = @_;
my ($pid, @result);
&fatal_error("unable to fork process") unless defined($pid = open(PROG_OUT, "-|"));
if (!$pid) {
# child
exec($CB_SCRIPT, @params) or &fatal_error("failed to execute $CB_SCRIPT!");
exit 0;
} else {
# parent
# only read lines containing at least one non-whitespace character
@result = grep /\S/, <PROG_OUT>;
foreach (@result) { chomp; }
unless (close PROG_OUT) {
&debug_msg(DEBUG_WARN, "error while running $CB_SCRIPT (params:" . join(" ",@params) . "): $?");
return undef;
}
}
if (wantarray) {
return @result;
} elsif (@result > 0) {
return join('',@result);
} else {
return "";
}
}
sub check_init_running {
# TODO: improve this
return (0==1);
}
# Parameter: device
sub check_device_plaintext {
return (system("$CB_SCRIPT","is_plain",$1) == 0);
}
# Parameter: device
sub check_device_encryption {
return (system("$CB_SCRIPT","is_encrypted",$1) == 0);
}
sub is_harddisk_available {
my @all_disks = &exec_cb_script("get_available_disks");
return @all_disks > 0;
}
sub get_available_disks {
my @all_disks = &exec_cb_script("get_available_disks");
my ($disk, @return_disks);
foreach $disk (@all_disks) {
$disk =~ m#^([/\._\-\w]*)$#;
push @return_disks, $1 if ($1);
}
return @return_disks;
}
sub get_disk_name {
my ($dev) = @_;
my $disk_name = &exec_cb_script("get_device_name", $dev);
return $disk_name;
}
# return the value of a configuration setting (timeout, language, ip, ...)
# Parameter: setting_name
sub get_cbox_config {
my ($setting) = @_;
# tell the exec function, that we want a scalar instead of an array
my $scalar = &exec_cb_script("get_config",$setting);
return $scalar;
}
sub render {
my $pagefile = "$HTML_TEMPLATE_DIR/main.cs";
print "Content-Type: text/html\n\n";
my $cs = ClearSilver::CS->new($pagedata);
$cs->parseFile($pagefile);
print $cs->render();