mirror of
https://github.com/pi-hole/pi-hole
synced 2024-11-15 20:49:01 +00:00
248 lines
7.7 KiB
Bash
Executable File
248 lines
7.7 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Pi-hole: A black hole for Internet advertisements
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# (c) 2017 Pi-hole, LLC (https://pi-hole.net)
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# Network-wide ad blocking via your own hardware.
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#
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# Whitelist and blacklist domains
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#
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# This file is copyright under the latest version of the EUPL.
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# Please see LICENSE file for your rights under this license.
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# Globals
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basename=pihole
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piholeDir=/etc/"${basename}"
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gravityDBfile="${piholeDir}/gravity.db"
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reload=false
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addmode=true
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verbose=true
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wildcard=false
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web=false
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domList=()
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listType=""
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listname=""
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colfile="/opt/pihole/COL_TABLE"
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source ${colfile}
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helpFunc() {
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if [[ "${listType}" == "whitelist" ]]; then
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param="w"
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type="whitelist"
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elif [[ "${listType}" == "regex_blacklist" && "${wildcard}" == true ]]; then
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param="-wild"
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type="wildcard blacklist"
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elif [[ "${listType}" == "regex_blacklist" ]]; then
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param="-regex"
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type="regex blacklist filter"
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else
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param="b"
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type="blacklist"
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fi
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echo "Usage: pihole -${param} [options] <domain> <domain2 ...>
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Example: 'pihole -${param} site.com', or 'pihole -${param} site1.com site2.com'
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${type^} one or more domains
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Options:
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-d, --delmode Remove domain(s) from the ${type}
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-nr, --noreload Update ${type} without reloading the DNS server
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-q, --quiet Make output less verbose
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-h, --help Show this help dialog
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-l, --list Display all your ${type}listed domains
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--nuke Removes all entries in a list"
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exit 0
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}
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Escape
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Regexp() {
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# This way we may safely insert an arbitrary
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# string in our regular expressions
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# This sed is intentionally executed in three steps to ease maintainability
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# The first sed removes any amount of leading dots
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echo $* | sed 's/^\.*//' | sed "s/[]\.|$(){}?+*^]/\\\\&/g" | sed "s/\\//\\\\\//g"
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}
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HandleOther() {
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# Convert to lowercase
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domain="${1,,}"
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# Check validity of domain (don't check for regex entries)
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if [[ "${#domain}" -le 253 ]]; then
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if [[ "${listType}" == "regex_blacklist" && "${wildcard}" == false ]]; then
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validDomain="${domain}"
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else
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validDomain=$(grep -P "^((-|_)*[a-z\\d]((-|_)*[a-z\\d])*(-|_)*)(\\.(-|_)*([a-z\\d]((-|_)*[a-z\\d])*))*$" <<< "${domain}") # Valid chars check
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validDomain=$(grep -P "^[^\\.]{1,63}(\\.[^\\.]{1,63})*$" <<< "${validDomain}") # Length of each label
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fi
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fi
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if [[ -n "${validDomain}" ]]; then
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domList=("${domList[@]}" ${validDomain})
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else
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echo -e " ${CROSS} ${domain} is not a valid argument or domain name!"
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fi
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}
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ProcessDomainList() {
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if [[ "${listType}" == "regex_blacklist" ]]; then
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# Regex filter list
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listname="regex blacklist filters"
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else
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# Whitelist / Blacklist
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listname="${listType}"
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fi
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for dom in "${domList[@]}"; do
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# Format domain into regex filter if requested
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if [[ "${wildcard}" == true ]]; then
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dom="(^|\\.)${dom//\./\\.}$"
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fi
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# Logic: If addmode then add to desired list and remove from the other;
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# if delmode then remove from desired list but do not add to the other
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if ${addmode}; then
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AddDomain "${dom}" "${listType}"
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if [[ ! "${listType}" == "regex_blacklist" ]]; then
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RemoveDomain "${dom}" "${listAlt}"
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fi
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else
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RemoveDomain "${dom}" "${listType}"
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fi
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done
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}
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AddDomain() {
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local domain list num
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# Use printf to escape domain. %q prints the argument in a form that can be reused as shell input
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domain="$1"
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list="$2"
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# Is the domain in the list we want to add it to?
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num="$(sqlite3 "${gravityDBfile}" "SELECT COUNT(*) FROM ${list} WHERE domain = '${domain}';")"
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if [[ "${num}" -ne 0 ]]; then
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if [[ "${verbose}" == true ]]; then
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echo -e " ${INFO} ${1} already exists in ${listname}, no need to add!"
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fi
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return
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fi
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# Domain not found in the table, add it!
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if [[ "${verbose}" == true ]]; then
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echo -e " ${INFO} Adding ${1} to the ${listname}..."
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fi
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reload=true
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# Insert only the domain here. The enabled and date_added fields will be filled
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# with their default values (enabled = true, date_added = current timestamp)
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sqlite3 "${gravityDBfile}" "INSERT INTO ${list} (domain) VALUES ('${domain}');"
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}
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RemoveDomain() {
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local domain list num
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# Use printf to escape domain. %q prints the argument in a form that can be reused as shell input
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domain="$1"
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list="$2"
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# Is the domain in the list we want to remove it from?
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num="$(sqlite3 "${gravityDBfile}" "SELECT COUNT(*) FROM ${list} WHERE domain = '${domain}';")"
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if [[ "${num}" -eq 0 ]]; then
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if [[ "${verbose}" == true ]]; then
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echo -e " ${INFO} ${1} does not exist in ${list}, no need to remove!"
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fi
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return
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fi
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# Domain found in the table, remove it!
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if [[ "${verbose}" == true ]]; then
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echo -e " ${INFO} Removing ${1} from the ${listname}..."
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fi
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reload=true
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# Remove it from the current list
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sqlite3 "${gravityDBfile}" "DELETE FROM ${list} WHERE domain = '${domain}';"
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}
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Displaylist() {
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local list listname count num_pipes domain enabled status nicedate
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listname="${listType}"
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data="$(sqlite3 "${gravityDBfile}" "SELECT domain,enabled,date_modified FROM ${listType};" 2> /dev/null)"
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if [[ -z $data ]]; then
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echo -e "Not showing empty ${listname}"
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else
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echo -e "Displaying ${listname}:"
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count=1
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while IFS= read -r line
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do
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# Count number of pipes seen in this line
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# This is necessary because we can only detect the pipe separating the fields
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# from the end backwards as the domain (which is the first field) may contain
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# pipe symbols as they are perfectly valid regex filter control characters
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num_pipes="$(grep -c "^" <<< "$(grep -o "|" <<< "${line}")")"
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# Extract domain and enabled status based on the obtained number of pipe characters
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domain="$(cut -d'|' -f"-$((num_pipes-1))" <<< "${line}")"
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enabled="$(cut -d'|' -f"$((num_pipes))" <<< "${line}")"
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datemod="$(cut -d'|' -f"$((num_pipes+1))" <<< "${line}")"
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# Translate boolean status into human readable string
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if [[ "${enabled}" -eq 1 ]]; then
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status="enabled"
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else
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status="disabled"
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fi
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# Get nice representation of numerical date stored in database
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nicedate=$(date --rfc-2822 -d "@${datemod}")
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echo " ${count}: ${domain} (${status}, last modified ${nicedate})"
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count=$((count+1))
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done <<< "${data}"
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fi
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exit 0;
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}
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NukeList() {
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sqlite3 "${gravityDBfile}" "DELETE FROM ${listType};"
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}
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for var in "$@"; do
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case "${var}" in
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"-w" | "whitelist" ) listType="whitelist"; listAlt="blacklist";;
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"-b" | "blacklist" ) listType="blacklist"; listAlt="whitelist";;
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"--wild" | "wildcard" ) listType="regex_blacklist"; wildcard=true;;
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"--regex" | "regex" ) listType="regex_blacklist";;
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"-nr"| "--noreload" ) reload=false;;
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"-d" | "--delmode" ) addmode=false;;
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"-q" | "--quiet" ) verbose=false;;
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"-h" | "--help" ) helpFunc;;
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"-l" | "--list" ) Displaylist;;
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"--nuke" ) NukeList;;
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"--web" ) web=true;;
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* ) HandleOther "${var}";;
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esac
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done
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shift
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if [[ $# = 0 ]]; then
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helpFunc
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fi
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ProcessDomainList
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# Used on web interface
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if $web; then
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echo "DONE"
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fi
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if [[ "${reload}" != false ]]; then
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pihole restartdns reload
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fi
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