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Speed things up a bit with some humble greps. Consolodate regexes and remove the need for so many mapfile/arrays

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Signed-off-by: Adam Warner <me@adamwarner.co.uk>

Use temp files for parsing and remove when done.

Always rm the non-domains temp file.

exit 1 if gravity database creation fails.

Signed-off-by: Dan Schaper <dan.schaper@pi-hole.net>
Co-authored-by: Dan Schaper <dan.schaper@pi-hole.net>
Co-authored-by: DL6ER <dl6er@dl6er.de>
Co-authored-by: Adam Warner <me@adamwarner.co.uk>
This commit is contained in:
Adam Warner 2023-03-24 23:15:49 +00:00 committed by Dan Schaper
parent c96463bda2
commit 0656ceb149
No known key found for this signature in database
1 changed files with 35 additions and 59 deletions
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94
gravity.sh
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@ -546,15 +546,6 @@ abp_domains=0
parseList() { parseList() {
local adlistID="${1}" src="${2}" target="${3}" temp_file temp_file_base non_domains sample_non_domains valid_domain_pattern abp_domain_pattern local adlistID="${1}" src="${2}" target="${3}" temp_file temp_file_base non_domains sample_non_domains valid_domain_pattern abp_domain_pattern
# Create a temporary file for the sed magic instead of using "${target}" directly
# this allows to split the sed commands to improve readability
# we use a file handle here and remove the temporary file immediately so the content will be deleted in any case
# when the script stops
temp_file_base="$(mktemp -p "/tmp" --suffix=".gravity")"
exec 3>"$temp_file_base"
rm "${temp_file_base}"
temp_file="/proc/$$/fd/3"
# define valid domain patterns # define valid domain patterns
# no need to include uppercase letters, as we convert to lowercase in gravity_ParseFileIntoDomains() already # no need to include uppercase letters, as we convert to lowercase in gravity_ParseFileIntoDomains() already
# adapted from https://stackoverflow.com/a/30007882 # adapted from https://stackoverflow.com/a/30007882
@ -563,62 +554,39 @@ parseList() {
valid_domain_pattern="([a-z0-9]([a-z0-9_-]{0,61}[a-z0-9]){0,1}\.)+[a-z0-9][a-z0-9-]{0,61}[a-z0-9]" valid_domain_pattern="([a-z0-9]([a-z0-9_-]{0,61}[a-z0-9]){0,1}\.)+[a-z0-9][a-z0-9-]{0,61}[a-z0-9]"
abp_domain_pattern="\|\|${valid_domain_pattern}\^" abp_domain_pattern="\|\|${valid_domain_pattern}\^"
# 1. Add all valid domains
sed -r "/^${valid_domain_pattern}$/!d" "${src}" > "${temp_file}"
# 2. Add valid ABP style domains if there is at least one such domain
if grep -E "^${abp_domain_pattern}$" -m 1 -q "${src}"; then
echo " ${INFO} List contained AdBlock Plus style domains"
abp_domains=1
sed -r "/^${abp_domain_pattern}$/!d" "${src}" >> "${temp_file}"
fi
# Find lines containing no domains or with invalid characters (not matching regex above)
# This is simply everything that is not in $temp_file compared to $src
# Remove duplicates from the list
mapfile -t non_domains < <(grep -Fvf "${temp_file}" "${src}" | sort -u )
# 3. Remove trailing period (see https://github.com/pi-hole/pi-hole/issues/4701)
# 4. Append ,adlistID to every line
# 5. Ensures there is a newline on the last line
# and write everything to the target file
sed "s/\.$//;s/$/,${adlistID}/;/.$/a\\" "${temp_file}" >> "${target}"
# A list of items of common local hostnames not to report as unusable # A list of items of common local hostnames not to report as unusable
# Some lists (i.e StevenBlack's) contain these as they are supposed to be used as HOST files # Some lists (i.e StevenBlack's) contain these as they are supposed to be used as HOST files
# but flagging them as unusable causes more confusion than it's worth - so we suppress them from the output # but flagging them as unusable causes more confusion than it's worth - so we suppress them from the output
false_positives="localhost|localhost.localdomain|local|broadcasthost|localhost|ip6-localhost|ip6-loopback|lo0 localhost|ip6-localnet|ip6-mcastprefix|ip6-allnodes|ip6-allrouters|ip6-allhosts" false_positives="localhost|localhost.localdomain|local|broadcasthost|localhost|ip6-localhost|ip6-loopback|lo0 localhost|ip6-localnet|ip6-mcastprefix|ip6-allnodes|ip6-allrouters|ip6-allhosts"
# if there are any non-domains, filter the array for false-positives # Extract valid domains from source file and append ,${adlistID} to each line and save count to variable for display.
# Credit: https://stackoverflow.com/a/40264051 num_domains=$(grep -E "^(${valid_domain_pattern}|${abp_domain_pattern})$" "${src}" | tee >(sed "s/$/,${adlistID}/" >> "${target}") | wc -l)
if [[ "${#non_domains[@]}" -gt 0 ]]; then
mapfile -d $'\0' -t non_domains < <(printf '%s\0' "${non_domains[@]}" | grep -Ezv "^${false_positives}") # Check if the source file contained AdBlock Plus style domains, if so we set the global variable and inform the user
if grep -E "^${abp_domain_pattern}$" -m 1 -q "${src}"; then
echo " ${INFO} List contained AdBlock Plus style domains"
abp_domains=1
fi fi
# Get a sample of non-domain entries, limited to 5 (the list should already have been de-duplicated) # For completeness, we will get a count of non_domains (this is the number of entries left after stripping the source of comments/duplicates/false positives/domains)
IFS=" " read -r -a sample_non_domains <<< "$(tr ' ' '\n' <<< "${non_domains[@]}" | head -n 5 | tr '\n' ' ')" invalid_domains="$(mktemp -p "${GRAVITY_TMPDIR}" --suffix=".ph-non-domains")"
# Get the number of domains added num_non_domains=$(grep -Ev "^(${valid_domain_pattern}|${abp_domain_pattern}|${false_positives})$" "${src}" | tee "${invalid_domains}" | wc -l)
num_domains="$(grep -c "^" "${temp_file}")"
# Get the number of non_domains (this is the number of entries left after stripping the source of comments/duplicates/false positives/domains)
num_non_domains="${#non_domains[@]}"
# If there are unusable lines, we display some information about them. This is not error or major cause for concern. # If there are unusable lines, we display some information about them. This is not error or major cause for concern.
if [[ "${num_non_domains}" -ne 0 ]]; then if [[ "${num_non_domains}" -ne 0 ]]; then
echo " ${INFO} Imported ${num_domains} domains, ignoring ${num_non_domains} non-domain entries" type="domains"
if [[ "${abp_domains}" -ne 0 ]]; then
type="patterns"
fi
echo " ${INFO} Imported ${num_domains} ${type}, ignoring ${num_non_domains} non-domain entries"
echo " Sample of non-domain entries:" echo " Sample of non-domain entries:"
for each in "${sample_non_domains[@]}" invalid_lines=$(head -n 5 "${invalid_domains}")
do echo "${invalid_lines}" | awk '{print " - " $0}'
echo " - ${each}"
done
else else
echo " ${INFO} Imported ${num_domains} domains" echo " ${INFO} Imported ${num_domains} domains"
fi fi
rm "${invalid_domains}"
# close file handle
exec 3<&-
} }
compareLists() { compareLists() {
@ -648,10 +616,10 @@ compareLists() {
# Download specified URL and perform checks on HTTP status and file content # Download specified URL and perform checks on HTTP status and file content
gravity_DownloadBlocklistFromUrl() { gravity_DownloadBlocklistFromUrl() {
local url="${1}" cmd_ext="${2}" agent="${3}" adlistID="${4}" saveLocation="${5}" target="${6}" compression="${7}" local url="${1}" cmd_ext="${2}" agent="${3}" adlistID="${4}" saveLocation="${5}" target="${6}" compression="${7}"
local heisenbergCompensator="" patternBuffer str httpCode success="" ip local heisenbergCompensator="" listCurlBuffer str httpCode success="" ip
# Create temp file to store content on disk instead of RAM # Create temp file to store content on disk instead of RAM
patternBuffer=$(mktemp -p "${GRAVITY_TMPDIR}" --suffix=".phgpb") listCurlBuffer=$(mktemp -p "${GRAVITY_TMPDIR}" --suffix=".phgpb")
# Determine if $saveLocation has read permission # Determine if $saveLocation has read permission
if [[ -r "${saveLocation}" && $url != "file"* ]]; then if [[ -r "${saveLocation}" && $url != "file"* ]]; then
@ -705,12 +673,12 @@ gravity_DownloadBlocklistFromUrl() {
fi fi
# shellcheck disable=SC2086 # shellcheck disable=SC2086
httpCode=$(curl --connect-timeout ${curl_connect_timeout} -s -L ${compression} ${cmd_ext} ${heisenbergCompensator} -w "%{http_code}" -A "${agent}" "${url}" -o "${patternBuffer}" 2> /dev/null) httpCode=$(curl --connect-timeout ${curl_connect_timeout} -s -L ${compression} ${cmd_ext} ${heisenbergCompensator} -w "%{http_code}" -A "${agent}" "${url}" -o "${listCurlBuffer}" 2> /dev/null)
case $url in case $url in
# Did we "download" a local file? # Did we "download" a local file?
"file"*) "file"*)
if [[ -s "${patternBuffer}" ]]; then if [[ -s "${listCurlBuffer}" ]]; then
echo -e "${OVER} ${TICK} ${str} Retrieval successful"; success=true echo -e "${OVER} ${TICK} ${str} Retrieval successful"; success=true
else else
echo -e "${OVER} ${CROSS} ${str} Not found / empty list" echo -e "${OVER} ${CROSS} ${str} Not found / empty list"
@ -743,10 +711,12 @@ gravity_DownloadBlocklistFromUrl() {
database_adlist_status "${adlistID}" "2" database_adlist_status "${adlistID}" "2"
database_adlist_number "${adlistID}" database_adlist_number "${adlistID}"
done="true" done="true"
# Check if $patternbuffer is a non-zero length file # Check if $listCurlBuffer is a non-zero length file
elif [[ -s "${patternBuffer}" ]]; then elif [[ -s "${listCurlBuffer}" ]]; then
# Determine if blocklist is non-standard and parse as appropriate # Determine if blocklist is non-standard and parse as appropriate
gravity_ParseFileIntoDomains "${patternBuffer}" "${saveLocation}" gravity_ParseFileIntoDomains "${listCurlBuffer}" "${saveLocation}"
# Remove curl buffer file after its use
rm "${listCurlBuffer}"
# Add domains to database table file # Add domains to database table file
parseList "${adlistID}" "${saveLocation}" "${target}" parseList "${adlistID}" "${saveLocation}" "${target}"
# Compare lists, are they identical? # Compare lists, are they identical?
@ -756,7 +726,7 @@ gravity_DownloadBlocklistFromUrl() {
database_adlist_number "${adlistID}" database_adlist_number "${adlistID}"
done="true" done="true"
else else
# Fall back to previously cached list if $patternBuffer is empty # Fall back to previously cached list if $listCurlBuffer is empty
echo -e " ${INFO} Received empty file" echo -e " ${INFO} Received empty file"
fi fi
fi fi
@ -868,7 +838,10 @@ gravity_Cleanup() {
# Delete tmp content generated by Gravity # Delete tmp content generated by Gravity
rm ${piholeDir}/pihole.*.txt 2> /dev/null rm ${piholeDir}/pihole.*.txt 2> /dev/null
rm ${piholeDir}/*.tmp 2> /dev/null rm ${piholeDir}/*.tmp 2> /dev/null
# listCurlBuffer location
rm "${GRAVITY_TMPDIR}"/*.phgpb 2> /dev/null rm "${GRAVITY_TMPDIR}"/*.phgpb 2> /dev/null
# invalid_domains location
rm "${GRAVITY_TMPDIR}"/*.ph-non-domains 2> /dev/null
# Ensure this function only runs when gravity_SetDownloadOptions() has completed # Ensure this function only runs when gravity_SetDownloadOptions() has completed
if [[ "${gravity_Blackbody:-}" == true ]]; then if [[ "${gravity_Blackbody:-}" == true ]]; then
@ -1031,7 +1004,10 @@ if ! gravity_CheckDNSResolutionAvailable; then
exit 1 exit 1
fi fi
gravity_DownloadBlocklists if ! gravity_DownloadBlocklists; then
echo -e " ${CROSS} Unable to create gravity database. Please try again later. If the problem persists, please contact support."
exit 1
fi
# Create local.list # Create local.list
gravity_generateLocalList gravity_generateLocalList