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https://github.com/Llewellynvdm/Tomb.git
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fixes and cleanups
This commit is contained in:
Jaromil
parent
3fb248bde8
commit
c3a354cc0f
85
tomb
85
tomb
@ -95,7 +95,7 @@ typeset -Hi _UID # Running user identifier
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typeset -Hi _GID # Running user group identifier
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typeset -H _TTY # Connected input terminal
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# Tomb context (see _plot())
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# Tomb context (see is_valid_tomb())
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typeset -H TOMBPATH # Full path to the tomb
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typeset -H TOMBDIR # Directory where the tomb is
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typeset -H TOMBFILE # File name of the tomb
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@ -542,41 +542,40 @@ sphinx_set_password() {
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# Check if a filename is a valid tomb
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is_valid_tomb() {
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local tombpath=$1
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_verbose "is_valid_tomb ::1 tomb file::" $tombpath
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_verbose "is_valid_tomb ::1 tomb file::" $1
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# First argument must be the path to a tomb
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[[ -z "$tombpath" ]] && {
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_failure "Tomb file is missing from arguments." }
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[[ $1 ]] || _failure "Tomb file is missing from arguments."
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_fail=0
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local _fail=0
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# Tomb file must be a readable, writable, non-empty regular file.
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# If passed the "ro" mount option, the writable check is skipped.
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[[ ! -w "$tombpath" ]] && [[ $(option_value -o) != *"ro"* ]] && {
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_warning "Tomb file is not writable: ::1 tomb file::" $tombpath
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[[ ! -w "$1" ]] && [[ $(option_value -o) != *"ro"* ]] && {
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_warning "Tomb file is not writable: ::1 tomb file::" $1
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_fail=1
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}
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_verbose "tomb file is readable"
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[[ ! -f "$tombpath" ]] && {
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_warning "Tomb file is not a regular file: ::1 tomb file::" $tombpath
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[[ ! -f "$1" ]] && {
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_warning "Tomb file is not a regular file: ::1 tomb file::" $1
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_fail=1
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}
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_verbose "tomb file is a regular file"
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[[ ! -s "$tombpath" ]] && {
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_warning "Tomb file is empty (zero length): ::1 tomb file::" $tombpath
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[[ ! -s "$1" ]] && {
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_warning "Tomb file is empty (zero length): ::1 tomb file::" $1
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_fail=1
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}
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_verbose "tomb file is not empty"
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[[ $_fail = 1 ]] && {
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[[ $_fail == 1 ]] && {
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_failure "Tomb command failed: ::1 command name::" $subcommand
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}
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# Tomb file may be a LUKS FS (or we are creating it)
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[[ "`file $tombpath`" =~ "luks encrypted file" ]] || {
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_warning "File is not yet a tomb: ::1 tomb file::" $tombpath }
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[[ "`file $1`" =~ "luks encrypted file" ]] || {
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_warning "File is not yet a tomb: ::1 tomb file::" $1 }
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# We set global variables
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typeset -g TOMBPATH TOMBDIR TOMBFILE TOMBNAME TOMBMAPPER
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@ -599,7 +598,7 @@ is_valid_tomb() {
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_failure "Tomb won't work without a TOMBNAME."
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# checks if Tomb already mounted (or we cannot alter it)
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local maphash=`realpath $tombpath | sha256sum -z`
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local maphash=`realpath $TOMBPATH | sha256sum -z`
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local nextloop=`losetup -f`
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TOMBMAPPER="tomb.$TOMBNAME.${maphash[(w)1]}.`basename $nextloop`"
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local mounted_tombs=(`list_tomb_mounts`)
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@ -1830,52 +1829,43 @@ engrave_key() {
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# which blocks in the filesystem contain that data.
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dig_tomb() {
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local tombpath="$1" # Path to tomb
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# $1 arg is path to tomb
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# Require the specification of the size of the tomb (-s) in MiB
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local -i tombsize=$(option_value -s)
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_message "Commanded to dig tomb ::1 tomb path::" $tombpath
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[[ -n "$tombpath" ]] || _failure "Missing path to tomb"
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[[ $1 ]] || _failure "Missing path to tomb"
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[[ -n "$tombsize" ]] || _failure "Size argument missing, use -s"
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[[ $tombsize == <-> ]] || _failure "Size must be an integer (mebibytes)"
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[[ $tombsize -ge 10 ]] || _failure "Tombs can't be smaller than 10 mebibytes"
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is_valid_tomb $tombpath
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[[ -e $TOMBPATH ]] && {
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[[ -e $1 ]] && {
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_warning "A tomb exists already. I'm not digging here:"
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ls -lh $TOMBPATH
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ls -lh $1
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return 1
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}
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_success "Creating a new tomb in ::1 tomb path::" $TOMBPATH
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_success "Creating a new tomb in ::1 tomb path::" $1
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_message "Generating ::1 tomb file:: of ::2 size::MiB" $1 $tombsize
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_message "Generating ::1 tomb file:: of ::2 size::MiB" $TOMBFILE $tombsize
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# Ensure that file permissions are safe even if interrupted
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touch $TOMBPATH
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touch "$1"
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[[ $? = 0 ]] || {
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_warning "Error creating the tomb ::1 tomb path::" $TOMBPATH
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_warning "Error creating the tomb ::1 tomb path::" $1
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_failure "Operation aborted."
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}
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chmod 0600 $TOMBPATH
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# Ensure that file permissions are safe even if interrupted
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_sudo chown ${_UID}:${_GID} "$1"
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chmod 0600 $1
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_verbose "Data dump using ::1:: from /dev/urandom" ${DD[1]}
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${=DD} if=/dev/urandom bs=1048576 count=$tombsize of=$TOMBPATH
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${=DD} if=/dev/urandom bs=1048576 count=$tombsize of=$1
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ls -lh "$1"
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[[ $? == 0 && -e $TOMBPATH ]] && {
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_sudo chown ${_UID}:${_GID} "$TOMBPATH"
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ls -lh "$TOMBPATH"
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} || {
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_warning "Error creating the tomb ::1 tomb path::" $TOMBPATH
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_failure "Operation aborted."
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}
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_success "Done digging ::1 tomb name::" $TOMBNAME
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_success "Done digging ::1 tomb name::" $1
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_message "Your tomb is not yet ready, you need to forge a key and lock it:"
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_message "tomb forge ::1 tomb path::.key" $TOMBPATH
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_message "tomb lock ::1 tomb path:: -k ::1 tomb path::.key" $TOMBPATH
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_message "tomb forge ::1 tomb path::.key" $1
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_message "tomb lock ::1 tomb path:: -k ::1 tomb path::.key" $1
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return 0
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}
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@ -2766,7 +2756,6 @@ resize_tomb() {
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[[ -z "$newtombsize" ]] && {
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_failure "Aborting operations: new size was not specified, use -s" }
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# this also calls _plot()
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is_valid_tomb $tombpath
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_load_key # Try loading new key from option -k and set TOMBKEYFILE
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@ -2867,16 +2856,16 @@ umount_tomb() {
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_verbose "Name: ::1 tomb name::" $tombname
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_verbose "Mount: ::1 mount point::" $tombmount
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_verbose "Loop: ::1 mount loop::" $tombloop
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_verbose "Mapper: ::1 mapper::" $TOMBMAPPER
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_verbose "Mapper: ::1 mapper::" $mapper
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[[ -e "$TOMBMAPPER" ]] && {
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[[ -e "$mapper" ]] && {
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_warning "Tomb not found: ::1 tomb file::" $1
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_warning "Please specify an existing tomb."
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return 0 }
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option_is_set -n || {
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exec_safe_func_hooks \
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close "$tombmount" "$tombname" "$tombloop" "$TOMBMAPPER"
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close "$tombmount" "$tombname" "$tombloop" "$mapper"
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exec_hook_res=$?
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[[ $exec_hook_res = 0 ]] || {
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_warning "close exec-hook returns a non-zero error code: ::1 error::" $exec_hook_res
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@ -2924,8 +2913,8 @@ umount_tomb() {
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[[ "$tombmount" =~ "(/run)?/media(/$_USER)?/$tombname_regex" ]] && {
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_sudo rmdir $tombmount }
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_sudo cryptsetup luksClose $TOMBMAPPER ||
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_failure "Error occurred in cryptsetup luksClose ::1 mapper::" $TOMBMAPPER
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_sudo cryptsetup luksClose $mapper ||
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_failure "Error occurred in cryptsetup luksClose ::1 mapper::" $mapper
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# Normally the loopback device is detached when unused
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[[ -e "/dev/$tombloop" ]] && {
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