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check first if array is empty before parsing further

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Patrick Schleizer 2024-07-24 10:57:13 -04:00
parent a077ae54ea
commit 1cbda79981
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1 changed files with 7 additions and 4 deletions
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11
usr/bin/permission-hardener
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@ -77,16 +77,19 @@ add_nosuid_statoverride_entry() {
## Capture the stat output with fields separated by NUL characters. ## Capture the stat output with fields separated by NUL characters.
## Delimiter at the end to avoid the last field to be interpreted as having a newline. ## Delimiter at the end to avoid the last field to be interpreted as having a newline.
stat_output=$(stat -c '%n\0%a\0%U\0%G\0%' "${line}") stat_output=$(stat -c '%n\0%a\0%U\0%G\0%' "${line}")
readarray -d '\0' -t arr <<< "${stat_output}" readarray -d '\0' -t arr <<< "${stat_output}"
file_name_from_stat="${arr[0]}"
existing_mode="${arr[1]}"
existing_owner="${arr[2]}"
existing_group="${arr[3]}"
if test "${#arr[@]}" = 0; then if test "${#arr[@]}" = 0; then
log error "Line is empty: '${line}'" >&2 log error "Line is empty: '${line}'" >&2
continue continue
fi fi
file_name_from_stat="${arr[0]}"
existing_mode="${arr[1]}"
existing_owner="${arr[2]}"
existing_group="${arr[3]}"
if test -z "${file_name}"; then if test -z "${file_name}"; then
log error "File name is empty in line: ${line}" >&2 log error "File name is empty in line: ${line}" >&2
continue continue