mirror of
https://github.com/pi-hole/pi-hole.git
synced 2024-12-23 21:30:17 +00:00
Slow query fix & queryFunc optimisation
* Validate modified code using Shellcheck & Strict Bash
* Added and/or elaborated more comments
* scanlist() should exit if /etc/pihole is not available
* Add `export LC_CTYPE=C` to prevent extreme grep slowdown
* Consider "domain.com#comment" an exact match
* Add specialised wildcard searching grep
* Optimise and simplify queryFunc() for readability
* Replace IDN `python` parsing with `idn2`, as `python` is not guaranteed to be available
* Use ${COL_BOLD} when printing filenames
This commit is contained in:
WaLLy3K
GitHub
parent
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commit
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1 changed files with 148 additions and 167 deletions
315
pihole
315
pihole
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@ -84,21 +84,27 @@ updateGravityFunc() {
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exit 0
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}
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# Scan an array of files for matching strings
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scanList(){
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domain="${1}"
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list="${2}"
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method="${3}"
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local domain="${1}" lists="${2}" type="${3:-}"
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# Switch folder, preventing grep from printing file path
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cd "/etc/pihole" || return 1
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# Prevent grep from printing file path
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cd "/etc/pihole" || exit 1
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if [[ -n "${method}" ]]; then
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grep -i -E -l "(^|\s|\/)${domain}($|\s|\/)" ${list} /dev/null 2> /dev/null
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else
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grep -i "${domain}" ${list} /dev/null 2> /dev/null
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fi
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# Prevent grep -i matching slowly: http://bit.ly/2xFXtUX
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export LC_CTYPE=C
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# /dev/null forces filename to be printed when only one list has been generated
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# shellcheck disable=SC2086
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case "${type}" in
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"exact" ) grep -i -E -l "(^|\\s)${domain}($|\\s|#)" ${lists} /dev/null;;
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"wc" ) grep -i -o -m 1 "/${domain}/" ${lists};;
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* ) grep -i "${domain}" ${lists} /dev/null;;
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esac
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}
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# Print each subdomain
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# e.g: foo.bar.baz.com = "foo.bar.baz.com bar.baz.com baz.com com"
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processWildcards() {
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IFS="." read -r -a array <<< "${1}"
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for (( i=${#array[@]}-1; i>=0; i-- )); do
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@ -115,8 +121,8 @@ processWildcards() {
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}
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queryFunc() {
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options="$*"
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options="${options/-q /}"
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shift
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local options="$*" adlist="" all="" exact="" blockpage="" matchType="match"
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if [[ "${options}" == "-h" ]] || [[ "${options}" == "--help" ]]; then
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echo "Usage: pihole -q [option] <domain>
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@ -131,201 +137,176 @@ Options:
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exit 0
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fi
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if [[ "${options}" == *"-exact"* ]]; then
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method="exact"
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exact=true
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fi
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if [[ "${options}" == *"-adlist"* ]]; then
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adlist=true
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fi
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if [[ "${options}" == *"-bp"* ]]; then
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method="exact"
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blockpage=true
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fi
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if [[ "${options}" == *"-all"* ]]; then
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all=true
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fi
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# Strip valid options, leaving only the domain and invalid options
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options=$(sed 's/ \?-\(exact\|adlist\(s\)\?\|bp\|all\) \?//g' <<< "$options")
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# Handle errors
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if [[ "${options}" == *" "* ]]; then
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error=true
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str="Unknown option specified"
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elif [[ "${options}" == "-q" ]]; then
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error=true
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str="No domain specified"
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fi
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if [[ -n "${error}" ]]; then
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echo -e " ${COL_LIGHT_RED}${str}${COL_NC}
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Try 'pihole -q --help' for more information."
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if [[ ! -e "/etc/pihole/adlists.list" ]]; then
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echo -e "${COL_LIGHT_RED}The file '/etc/pihole/adlists.list' was not found${COL_NC}"
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exit 1
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fi
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# If domain contains non ASCII characters, convert domain to punycode if python is available
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# Cr: https://serverfault.com/a/335079
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if [[ "$options" = *[![:ascii:]]* ]]; then
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if command -v python &> /dev/null; then
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query=$(python -c 'import sys;print sys.argv[1].decode("utf-8").encode("idna")' "${options}")
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fi
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# Handle valid options
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if [[ "${options}" == *"-bp"* ]]; then
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exact="exact"; blockpage=true
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else
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query="${options}"
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[[ "${options}" == *"-adlist"* ]] && adlist=true
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[[ "${options}" == *"-all"* ]] && all=true
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if [[ "${options}" == *"-exact"* ]]; then
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exact="exact"; matchType="exact ${matchType}"
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fi
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fi
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# Strip valid options, leaving only the domain and invalid options
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# This allows users to place the options before or after the domain
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options=$(sed -E 's/ ?-(bp|adlists?|all|exact)//g' <<< "${options}")
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# Handle remaining options
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# If $options contain non ASCII characters, convert to punycode
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case "${options}" in
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"" ) str="No domain specified";;
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*$'\n'* ) str="Unknown query option specified";;
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*[![:ascii:]]* ) domainQuery=$(idn2 "${options}");;
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* ) domainQuery="${options}";;
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esac
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if [[ -n "${str:-}" ]]; then
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echo -e "${str}${COL_NC}\\nTry 'pihole -q --help' for more information."
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exit 1
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fi
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# Scan Whitelist and Blacklist
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lists="whitelist.txt blacklist.txt"
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results=($(scanList "${query}" "${lists}" "${method}"))
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mapfile -t results <<< "$(scanList "${domainQuery}" "${lists}" "${exact}")"
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if [[ -n "${results[*]}" ]]; then
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blResult=true
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# Loop through each scanList line to print appropriate title
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wbMatch=true
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# Loop through each result in order to print unique file title once
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for result in "${results[@]}"; do
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filename="${result/:*/}"
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if [[ -n "$exact" ]]; then
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printf " Exact result in %s\n" "${filename}"
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elif [[ -n "$blockpage" ]]; then
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printf "π %s\n" "${filename}"
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fileName="${result%%.*}"
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if [[ -n "${blockpage}" ]]; then
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echo "π ${fileName}"
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exit 0
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elif [[ -n "${exact}" ]]; then
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echo " ${matchType^} found in ${COL_BOLD}${fileName^}${COL_NC}"
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else
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domain="${result/*:/}"
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if [[ ! "${filename}" == "${filename_prev:-}" ]]; then
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printf " Result from %s\n" "${filename}"
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# Only print filename title once per file
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if [[ ! "${fileName}" == "${fileName_prev:-}" ]]; then
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echo " ${matchType^} found in ${COL_BOLD}${fileName^}${COL_NC}"
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fileName_prev="${fileName}"
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fi
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printf " %s\n" "${domain}"
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filename_prev="${filename}"
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echo " ${result#*:}"
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fi
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done
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fi
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# Scan Wildcards
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if [[ -e "${wildcardlist}" ]]; then
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wildcards=($(processWildcards "${query}"))
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# Determine all subdomains, domain and TLDs
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mapfile -t wildcards <<< "$(processWildcards "${domainQuery}")"
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for match in "${wildcards[@]}"; do
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results=($(scanList "\/${match}\/" ${wildcardlist}))
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# Search wildcard list for matches
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mapfile -t results <<< "$(scanList "${match}" "${wildcardlist}" "wc")"
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if [[ -n "${results[*]}" ]]; then
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# Remove empty lines before couting number of results
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count=$(sed '/^\s*$/d' <<< "${results[@]}" | wc -l)
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if [[ "${count}" -ge 0 ]]; then
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blResult=true
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if [[ -z "${blockpage}" ]]; then
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printf " Wildcard result in %s\n" "${wildcardlist/*dnsmasq.d\/}"
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fi
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if [[ -n "${blockpage}" ]]; then
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echo "π ${wildcardlist/*\/}"
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else
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echo " *.${match}"
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fi
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if [[ -z "${wcMatch:-}" ]] && [[ -z "${blockpage}" ]]; then
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wcMatch=true
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echo " ${matchType^} found in ${COL_BOLD}Wildcards${COL_NC}:"
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fi
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case "${blockpage}" in
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true ) echo "π ${wildcardlist##*/}"; exit 0;;
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* ) echo " *.${match}";;
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esac
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fi
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done
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[[ -n "${blResult}" ]] && [[ -n "${blockpage}" ]] && exit 0
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fi
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# Glob *.domains file names, remove file paths and sort by list number
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lists_raw=(/etc/pihole/*.domains)
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IFS_OLD=$IFS
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IFS=$'\n'
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lists=$(sort -t . -k 2 -g <<< "${lists_raw[*]//\/etc\/pihole\//}")
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# Get version sorted *.domains filenames (without dir path)
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lists=("$(cd "/etc/pihole" || exit 0; printf "%s\\n" -- *.domains | sort -V)")
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# Scan Domains files
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results=($(scanList "${query}" "${lists}" "${method}"))
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# Query blocklists for occurences of domain
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mapfile -t results <<< "$(scanList "${domainQuery}" "${lists[*]}" "${exact}")"
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# Handle notices
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if [[ -z "${blResult}" ]] && [[ -z "${results[*]}" ]]; then
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notice=true
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str="No ${method/t/t }results found for ${query} found within block lists"
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elif [[ -z "${all}" ]] && [[ "${#results[*]}" -ge 16000 ]]; then
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# 16000 chars is 15 chars X 1000 lines worth of results
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notice=true
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str="Hundreds of ${method/t/t }results found for ${query}
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This can be overriden using the -all option"
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if [[ -z "${wbMatch:-}" ]] && [[ -z "${wcMatch:-}" ]] && [[ -z "${results[*]}" ]]; then
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echo -e " ${INFO} No ${exact/t/t }results found for ${COL_BOLD}${domainQuery}${COL_NC} found within block lists"
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exit 0
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elif [[ -z "${results[*]}" ]]; then
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# Result found in WL/BL/Wildcards
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exit 0
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elif [[ -z "${all}" ]] && [[ "${#results[*]}" -ge 100 ]]; then
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echo -e " ${INFO} Over 100 ${exact/t/t }results found for ${COL_BOLD}${domainQuery}${COL_NC}
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This can be overridden using the -all option"
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exit 0
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fi
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if [[ -n "${notice}" ]]; then
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echo -e " ${INFO} ${str}"
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exit
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# Remove unwanted content from non-exact $results
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if [[ -z "${exact}" ]]; then
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# Delete lines starting with #
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# Remove comments after domain
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# Remove hosts format IP address
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mapfile -t results <<< "$(IFS=$'\n'; sed \
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-e "/:#/d" \
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-e "s/[ \\t]#.*//g" \
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-e "s/:.*[ \\t]/:/g" \
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<<< "${results[*]}")"
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# Exit if result was in a comment
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[[ -z "${results[*]}" ]] && exit 0
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fi
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# Remove unwanted content from results
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if [[ -z "${method}" ]]; then
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results=($(sed "/:#/d" <<< "${results[*]}")) # Lines starting with comments
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results=($(sed "s/[ \t]#.*//g" <<< "${results[*]}")) # Comments after domain
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results=($(sed "s/:.*[ \t]/:/g" <<< "${results[*]}")) # IP address
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fi
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IFS=$IFS_OLD
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# Get adlist content as array
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# Get adlist file content as array
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if [[ -n "${adlist}" ]] || [[ -n "${blockpage}" ]]; then
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if [[ -f "/etc/pihole/adlists.list" ]]; then
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for url in $(< /etc/pihole/adlists.list); do
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if [[ "${url:0:4}" == "http" ]] || [[ "${url:0:3}" == "www" ]]; then
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adlists+=("$url")
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fi
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done
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else
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echo -e " ${COL_LIGHT_RED}The file '/etc/pihole/adlists.list' was not found${COL_NC}"
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exit 1
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fi
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fi
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if [[ -n "${results[*]}" ]]; then
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if [[ -n "${exact}" ]]; then
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echo " Exact result(s) for ${query} found in:"
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fi
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for result in "${results[@]}"; do
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filename="${result/:*/}"
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# Convert file name to URL name for -adlist or -bp options
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if [[ -n "${adlist}" ]] || [[ -n "${blockpage}" ]]; then
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filenum=("${filename/list./}")
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filenum=("${filenum/.*/}")
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filename="${adlists[$filenum]}"
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# If gravity has generated associated .domains files
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# but adlists.list has been modified since
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if [[ -z "${filename}" ]]; then
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filename="${COL_LIGHT_RED}Error: no associated adlists URL found${COL_NC}"
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fi
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fi
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if [[ -n "${exact}" ]]; then
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printf " %s\n" "${filename}"
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elif [[ -n "${blockpage}" ]]; then
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printf "%s %s\n" "${filenum}" "${filename}"
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else # Standard query output
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# Print filename heading once per file, not for every match
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if [[ ! "${filename}" == "${filename_prev:-}" ]]; then
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unset count
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printf " Result from %s\n" "${filename}"
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else
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let count++
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fi
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# Print matching domain if $max_count has not been reached
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[[ -z "${all}" ]] && max_count="20"
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if [[ -z "${all}" ]] && [[ "${count}" -eq "${max_count}" ]]; then
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echo " Over $count results found, skipping rest of file"
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elif [[ -z "${all}" ]] && [[ "${count}" -gt "${max_count}" ]]; then
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continue
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else
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domain="${result/*:/}"
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printf " %s\n" "${domain}"
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fi
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filename_prev="${filename}"
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for adlistUrl in $(< "/etc/pihole/adlists.list"); do
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if [[ "${adlistUrl:0:4}" =~ (http|www.) ]]; then
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adlists+=("${adlistUrl}")
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fi
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done
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fi
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# Print "Exact matches for" title
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if [[ -n "${exact}" ]] && [[ -z "${blockpage}" ]]; then
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plural=""; [[ "${#results[*]}" -gt 1 ]] && plural="es"
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echo " ${matchType^}${plural} for ${COL_BOLD}${domainQuery}${COL_NC} found in:"
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fi
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for result in "${results[@]}"; do
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fileName="${result/:*/}"
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# Determine *.domains URL using filename's number
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if [[ -n "${adlist}" ]] || [[ -n "${blockpage}" ]]; then
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fileNum="${fileName/list./}"; fileNum="${fileNum%%.*}"
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fileName="${adlists[$fileNum]}"
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# Discrepency occurs when adlists has been modified, but Gravity has not been run
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if [[ -z "${fileName}" ]]; then
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fileName="${COL_LIGHT_RED}(no associated adlists URL found)${COL_NC}"
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fi
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fi
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if [[ -n "${blockpage}" ]]; then
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echo "${fileNum} ${fileName}"
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elif [[ -n "${exact}" ]]; then
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echo " ${fileName}"
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else
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if [[ ! "${fileName}" == "${fileName_prev:-}" ]]; then
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count=""
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echo " ${matchType^} found in ${COL_BOLD}${fileName}${COL_NC}:"
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fileName_prev="${fileName}"
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fi
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: $((count++))
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# Print matching domain if $max_count has not been reached
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[[ -z "${all}" ]] && max_count="50"
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if [[ -z "${all}" ]] && [[ "${count}" -ge "${max_count}" ]]; then
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[[ "${count}" -gt "${max_count}" ]] && continue
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echo " ${COL_GRAY}Over ${count} results found, skipping rest of file${COL_NC}"
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else
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echo " ${result#*:}"
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fi
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fi
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done
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exit 0
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}
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