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Verify write permissions before running write commands

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When the user doesn't have write permissions, display a helpful error
message.
This commit is contained in:
William Melody 2015-03-18 18:02:09 -07:00
parent a330d17862
commit 00e94c8042
1 changed files with 17 additions and 0 deletions
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17
hosts
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@ -472,6 +472,18 @@ _command_argv_includes() {
_contains "$1" "${command_argv[*]}"
}
# _verify_write_permissions
#
# Print a helpful error message when the specified operation can't be
# performed due to the lack of write permissions.
_verify_write_permissions() {
if ! test -w "${HOSTS_PATH}"; then
_die printf \
"You don't have permission to perform this operation. Try again with:
sudo !!\n"
fi
}
###############################################################################
# desc
###############################################################################
@ -659,6 +671,7 @@ Description:
Add a given IP address and hostname pair.
EOM
add() {
_verify_write_permissions
local ip=${1:-}
local hostname=${2:-}
if [[ -z ${ip} ]]; then
@ -688,6 +701,7 @@ Description:
search term.
EOM
disable() {
_verify_write_permissions
local search_term=$1
if [[ -z "${search_term}" ]]; then
$_me help disable
@ -711,6 +725,7 @@ Description:
Open the ${HOSTS_PATH} file in your \$EDITOR.
EOM
edit() {
_verify_write_permissions
if [[ -z "$EDITOR" ]]; then
_die printf "\$EDITOR not set.\n"
else
@ -729,6 +744,7 @@ Description:
or search term.
EOM
enable() {
_verify_write_permissions
local search_term=$1
if [[ -z "${search_term}" ]]; then
$_me help enable
@ -799,6 +815,7 @@ Description:
Remove all IP / hostname pairs for a given hostname.
EOM
remove() {
_verify_write_permissions
local hostname=${1:-}
if [[ -z $hostname ]]; then
$_me help remove