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https://github.com/Llewellynvdm/Tomb.git
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new tomb command 'passwd' can change a key password
usage: tomb passwd /path/to/keyfile.key documented in man page adds feature #46 adds internal func safe_file() adds parameters for askpass() function messaging
This commit is contained in:
Anathema
Jaromil
parent
30c862e36f
commit
9b6a716672
@ -66,6 +66,12 @@ command will list them on the terminal. The special
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fails if the tomb is in use by running processes, the command
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\fIslam\fR can be used to force close.
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.B
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.IP "passwd"
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Changes the password of a tomb key file specified in the \fIfirst
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argument\fR. It will need the old password to decode the key file, it
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will then reencode it using the new password.
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.B
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.IP "slam"
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Closes a tomb like the command \fIclose\fR does, but in case it is in
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@ -135,8 +141,12 @@ Display version and quit
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.B
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.IP "-q"
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Run more quietly
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.B
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.IP "-D"
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Print more information while running, for debugging purposes
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.B
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.IP "--no-color"
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Don't use colors; useful for old terminals or integration in other scripts
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.SH HOOKS
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@ -66,6 +66,12 @@ command will list them on the terminal. The special
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fails if the tomb is in use by running processes, the command
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\fIslam\fR can be used to force close.
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.B
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.IP "passwd"
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Changes the password of a tomb key file specified in the \fIfirst
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argument\fR. It will need the old password to decode the key file, it
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will then reencode it using the new password.
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.B
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.IP "slam"
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Closes a tomb like the command \fIclose\fR does, but in case it is in
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@ -135,8 +141,12 @@ Display version and quit
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.B
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.IP "-q"
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Run more quietly
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.B
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.IP "-D"
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Print more information while running, for debugging purposes
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.B
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.IP "--no-color"
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Don't use colors; useful for old terminals or integration in other scripts
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.SH HOOKS
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@ -66,6 +66,12 @@ command will list them on the terminal. The special
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fails if the tomb is in use by running processes, the command
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\fIslam\fR can be used to force close.
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.B
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.IP "passwd"
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Changes the password of a tomb key file specified in the \fIfirst
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argument\fR. It will need the old password to decode the key file, it
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will then reencode it using the new password.
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.B
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.IP "slam"
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Closes a tomb like the command \fIclose\fR does, but in case it is in
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152
src/tomb
152
src/tomb
@ -27,6 +27,7 @@ TOMBOPENEXEC="tomb-open"
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typeset -a OLDARGS
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for arg in ${argv}; do OLDARGS+=($arg); done
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STEGHIDE=1
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MKTEMP=1
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MOUNTOPTS="rw,noatime,nodev"
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#declare global variables
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@ -102,6 +103,11 @@ check_bin() {
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exit 1
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fi
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which mktemp > /dev/null
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if [ $?! = 0 ]; then
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MKTEMP=0
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fi
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# check for tomb-open script
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if [ "$0" = "./tomb" ]; then
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TOMBOPENEXEC="./tomb-open"
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@ -122,6 +128,19 @@ safe_dir() {
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print "$dir"
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}
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safe_file() {
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local tmpdir tmpfile
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if [ "$MKTEMP" = "1" ]; then
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mktemp -u /dev/shm/$1.$$.XXXXXXX
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# this return needs to output ONLY the file
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else
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tmpfile="/dev/shm/$1.$$.$RANDOM.$RANDOM"
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print $tmpfile
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fi
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}
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#check if there is swap 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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@ -152,11 +171,14 @@ ask_password() {
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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="$2"; fi
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cat <<EOF | GTK2_RC_FILES=${GTK2_RC} pinentry 2>/dev/null | awk '/^D / { sub(/^D /, ""); print }'
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OPTION ttyname=$TTY
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OPTION lc-ctype=$LANG
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SETTITLE Insert tomb password
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SETDESC Open tomb: $1
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SETTITLE $title
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SETDESC $1
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SETPROMPT Password:
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GETPIN
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EOF
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@ -216,6 +238,7 @@ Commands:
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list list all open tombs or the one called FILE
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close close the open tomb called FILE (or all)
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slam close tomb FILE and kill all pids using it
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passwd change the password of a tomb key FILE
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EOF
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if [ "$STEGHIDE" = 1 ]; then
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cat <<EOF
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@ -394,9 +417,9 @@ create_tomb() {
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# here user is prompted for key password
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for c in 1 2 3; do
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# 3 tries to write two times a matching password
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tombpass=`exec_as_user ${TOMBEXEC} askpass ${tombname}`
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tombpass=`exec_as_user ${TOMBEXEC} askpass "Secure key for ${tombname}"`
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tombpasstmp=$tombpass
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tombpass=`exec_as_user ${TOMBEXEC} askpass "${tombname} (again)"`
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tombpass=`exec_as_user ${TOMBEXEC} askpass "Secure key for ${tombname} (again)"`
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if [ "$tombpasstmp" = "$tombpass" ]; then
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break;
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fi
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@ -569,9 +592,9 @@ mount_tomb() {
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notice "Password is required for key ${keyname}"
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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 ${keyname}`
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tombpass=`exec_as_user ${TOMBEXEC} askpass "Open tomb ${keyname}"`
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else
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tombpass=`exec_as_user ${TOMBEXEC} askpass "$keyname (retry $c)"`
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tombpass=`exec_as_user ${TOMBEXEC} askpass "Open tomb $keyname (retry $c)"`
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fi
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(gpg --batch --passphrase-fd 0 --no-tty --no-options \
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-d "${tombkey}" 2> /dev/null <<< ${tombpass} ) \
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@ -637,9 +660,9 @@ encode_key() {
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# here user is prompted for key password
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for c in 1 2 3; do
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# 3 tries to write two times a matching password
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tombpass=`exec_as_user ${TOMBEXEC} askpass ${tombkey}`
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tombpass=`exec_as_user ${TOMBEXEC} askpass "Steg password for ${tombkey}"`
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tombpasstmp=$tombpass
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tombpass=`exec_as_user ${TOMBEXEC} askpass "${tombkey} (again)"`
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tombpass=`exec_as_user ${TOMBEXEC} askpass "Steg password for ${tombkey} (again)"`
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if [ "$tombpasstmp" = "$tombpass" ]; then
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break;
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fi
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@ -690,9 +713,9 @@ decode_key() {
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notice "Trying to exhume a key out of image $imagefile"
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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 ${keyfile}`
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tombpass=`exec_as_user ${TOMBEXEC} askpass "Steg password for ${keyfile}"`
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else
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tombpass=`exec_as_user ${TOMBEXEC} askpass "$keyfile (retry $c)"`
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tombpass=`exec_as_user ${TOMBEXEC} askpass "Steg password for $keyfile (retry $c)"`
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fi
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steghide extract -sf ${imagefile} -p ${tombpass} -xf - \
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| awk '
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@ -985,6 +1008,111 @@ umount_tomb() {
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return 0
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}
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# change tomb key password
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change_passwd() {
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if ! option_is_set --ignore-swap && [[ `check_swap out` == 1 ]]; then
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error "You have swap activated; use --ignore-swap if you want to skip this check"
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act "Using encryption with swap activated is very bad, because some files, or even your secret key, could be written on hard disk."
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act "However, it could be that your swap is encrypted. If this is case, this is ok. Then, use --ignore-swap to skip this check"
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act "You seem to be using `tail -n +2 /proc/swaps|wc -l` swaps:"
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tail -n +2 /proc/swaps
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return 1
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fi
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local keyfile="${1}"
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# check the keyfile
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if ! [ -r $keyfile ]; then
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error "key not found: $keyfile"
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return 1
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fi
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file $keyfile | grep PGP > /dev/null
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if [ $? != 0 ]; then
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error "file doesn't seems to be a tomb key: $keyfile"
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error "operation aborted."
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return 1
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fi
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local tmpnewkey tmpoldkey c tombpass tombpasstmp
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tmpnewkey=`safe_file tomb`
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tmpoldkey=`safe_file tomb`
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notice "Changing password for $keyfile"
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keyname=`basename $keyfile`
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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 "Type old password for ${keyname}" "Change tomb key password"`
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else
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tombpass=`exec_as_user ${TOMBEXEC} askpass "Type old password for ${keyname} (retry $c)" "Change tomb key password"`
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fi
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gpg --batch --no-options --no-tty --passphrase-fd 0 -o "${tmpoldkey}" -d $keyfile <<< "$tombpass" &> /dev/null
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if [ $? = 0 ]; then
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tombpass="ok"
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break
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fi
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done
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if [ "$tombpass" != "ok" ]; then
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error "You typed an Invalid old password. Operation aborted."
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# /dev/null because the file cannot exists
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${WIPE[@]} "${tmpnewkey}" 2> /dev/null
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${WIPE[@]} "${tmpoldkey}" 2> /dev/null
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return 1
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fi
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for c in 1 2 3; do
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# 3 tries to write two times a matching password
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if [ $c = 1 ]; then
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tombpass=`exec_as_user ${TOMBEXEC} askpass "Type the new password for ${keyname}" "Change tomb key password"`
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else
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tombpass=`exec_as_user ${TOMBEXEC} askpass "Type the new password for ${keyname} (retry $c)" "Change tomb key password"`
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fi
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tombpasstmp=$tombpass
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tombpass=`exec_as_user ${TOMBEXEC} askpass "Type the new password again" "Change tomb key password"`
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if [ "$tombpasstmp" = "$tombpass" ]; then
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break;
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fi
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unset tombpasstmp
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unset tombpass
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done
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if [ -z $tombpass ]; then
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error "You mistyped the new password. Operation aborted."
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# /dev/null because the file cannot exists
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${WIPE[@]} "${tmpnewkey}" 2> /dev/null
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${WIPE[@]} "${tmpoldkey}" 2> /dev/null
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return 1
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fi
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gpg \
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--openpgp --batch --no-options --no-tty --passphrase-fd 0 \
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-o "${tmpnewkey}" -c -a ${tmpoldkey} <<< ${tombpass}
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if [ $? != 0 ]; then
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error "Cannot change your key passphrase"
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# /dev/null because the file cannot exists
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${WIPE[@]} "${tmpnewkey}" 2> /dev/null
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${WIPE[@]} "${tmpoldkey}" 2> /dev/null
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return 1
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fi
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# wipe the previous, original, key
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${WIPE[@]} "${keyfile}"
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# copy the new key as the original keyfile name
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cp "${tmpnewkey}" "${keyfile}"
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act "Cleaning environment"
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# wipe all temp file
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${WIPE[@]} "${tmpnewkey}"
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${WIPE[@]} "${tmpoldkey}"
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notice "Your passphrase was successfully updated."
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return 0
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}
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# list all tombs mounted in a readable format
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list_tombs() {
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if [ $1 ]; then
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@ -1251,6 +1379,7 @@ main() {
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subcommands_opts[open]="n -nohook=n k: -key=k o: -mount-options=o -ignore-swap"
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subcommands_opts[mount]=${subcommands_opts[open]}
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subcommands_opts[create]="s: -size=s -ignore-swap k: -key=k"
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subcommands_opts[passwd]="-ignore-swap"
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subcommands_opts[close]=""
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subcommands_opts[help]=""
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subcommands_opts[slam]=""
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@ -1345,6 +1474,7 @@ main() {
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umount) check_priv ; umount_tomb ${CMD2} ;;
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close) check_priv ; umount_tomb ${CMD2} ;;
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slam) check_priv ; SLAM=1; umount_tomb ${CMD2} ;;
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passwd) check_priv ; change_passwd ${CMD2} ;;
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list) list_tombs ${CMD2} ;;
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status) launch_status ${CMD2} ;;
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help) usage ;;
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@ -1361,7 +1491,7 @@ main() {
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# internal commands useful to developers
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'source') return 0 ;;
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install) check_priv ; install_tomb ;;
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askpass) ask_password $CMD2 ;;
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askpass) ask_password ${CMD2} ${CMD3} ;;
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mktemp) safe_dir ${CMD2} ;;
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translate) generate_translatable_strings ;;
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__default)
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