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282 lines
9.2 KiB
282 lines
9.2 KiB
#!/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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typeId=""
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comment=""
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declare -i domaincount
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domaincount=0
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colfile="/opt/pihole/COL_TABLE"
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source ${colfile}
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# IDs are hard-wired to domain interpretation in the gravity database scheme
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# Clients (including FTL) will read them through the corresponding views
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readonly whitelist="0"
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readonly blacklist="1"
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readonly regex_whitelist="2"
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readonly regex_blacklist="3"
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GetListnameFromTypeId() {
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if [[ "$1" == "${whitelist}" ]]; then
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echo "whitelist"
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elif [[ "$1" == "${blacklist}" ]]; then
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echo "blacklist"
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elif [[ "$1" == "${regex_whitelist}" ]]; then
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echo "regex whitelist"
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elif [[ "$1" == "${regex_blacklist}" ]]; then
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echo "regex blacklist"
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fi
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}
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GetListParamFromTypeId() {
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if [[ "${typeId}" == "${whitelist}" ]]; then
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echo "w"
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elif [[ "${typeId}" == "${blacklist}" ]]; then
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echo "b"
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elif [[ "${typeId}" == "${regex_whitelist}" && "${wildcard}" == true ]]; then
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echo "-white-wild"
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elif [[ "${typeId}" == "${regex_whitelist}" ]]; then
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echo "-white-regex"
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elif [[ "${typeId}" == "${regex_blacklist}" && "${wildcard}" == true ]]; then
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echo "-wild"
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elif [[ "${typeId}" == "${regex_blacklist}" ]]; then
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echo "-regex"
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fi
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}
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helpFunc() {
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local listname param
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listname="$(GetListnameFromTypeId "${typeId}")"
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param="$(GetListParamFromTypeId)"
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echo "Usage: pihole -${param} [options] <domain> <domain2 ...>
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Example: 'pihole -${param} site.com', or 'pihole -${param} site1.com site2.com'
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${listname^} one or more domains
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Options:
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-d, --delmode Remove domain(s) from the ${listname}
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-nr, --noreload Update ${listname} 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 ${listname}listed domains
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--nuke Removes all entries in a list"
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exit 0
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}
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ValidateDomain() {
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# Convert to lowercase
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domain="${1,,}"
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# Check validity of domain (don't check for regex entries)
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if [[ "${#domain}" -le 253 ]]; then
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if [[ ( "${typeId}" == "${regex_blacklist}" || "${typeId}" == "${regex_whitelist}" ) && "${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} ${domain} is not a valid argument or domain name!"
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fi
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domaincount=$((domaincount+1))
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}
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ProcessDomainList() {
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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}"
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else
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RemoveDomain "${dom}"
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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 num requestedListname existingTypeId existingListname
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domain="$1"
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# Is the domain in the list we want to add it to?
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num="$(sqlite3 "${gravityDBfile}" "SELECT COUNT(*) FROM domainlist WHERE domain = '${domain}';")"
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requestedListname="$(GetListnameFromTypeId "${typeId}")"
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if [[ "${num}" -ne 0 ]]; then
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existingTypeId="$(sqlite3 "${gravityDBfile}" "SELECT type FROM domainlist WHERE domain = '${domain}';")"
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if [[ "${existingTypeId}" == "${typeId}" ]]; then
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if [[ "${verbose}" == true ]]; then
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echo -e " ${INFO} ${1} already exists in ${requestedListname}, no need to add!"
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fi
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else
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existingListname="$(GetListnameFromTypeId "${existingTypeId}")"
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sqlite3 "${gravityDBfile}" "UPDATE domainlist SET type = ${typeId} WHERE domain='${domain}';"
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if [[ "${verbose}" == true ]]; then
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echo -e " ${INFO} ${1} already exists in ${existingListname}, it has been moved to ${requestedListname}!"
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fi
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fi
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return
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fi
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# Domain not found in the table, add it!
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if [[ "${verbose}" == true ]]; then
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echo -e " ${INFO} Adding ${domain} to the ${requestedListname}..."
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fi
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reload=true
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# Insert only the domain here. The enabled and date_added fields will be filled
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# with their default values (enabled = true, date_added = current timestamp)
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if [[ -z "${comment}" ]]; then
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sqlite3 "${gravityDBfile}" "INSERT INTO domainlist (domain,type) VALUES ('${domain}',${typeId});"
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else
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# also add comment when variable has been set through the "--comment" option
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sqlite3 "${gravityDBfile}" "INSERT INTO domainlist (domain,type,comment) VALUES ('${domain}',${typeId},'${comment}');"
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fi
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}
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RemoveDomain() {
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local domain num requestedListname
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domain="$1"
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# Is the domain in the list we want to remove it from?
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num="$(sqlite3 "${gravityDBfile}" "SELECT COUNT(*) FROM domainlist WHERE domain = '${domain}' AND type = ${typeId};")"
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requestedListname="$(GetListnameFromTypeId "${typeId}")"
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if [[ "${num}" -eq 0 ]]; then
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if [[ "${verbose}" == true ]]; then
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echo -e " ${INFO} ${domain} does not exist in ${requestedListname}, no need to remove!"
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fi
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return
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fi
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# Domain found in the table, remove it!
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if [[ "${verbose}" == true ]]; then
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echo -e " ${INFO} Removing ${domain} from the ${requestedListname}..."
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fi
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reload=true
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# Remove it from the current list
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sqlite3 "${gravityDBfile}" "DELETE FROM domainlist WHERE domain = '${domain}' AND type = ${typeId};"
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}
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Displaylist() {
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local count num_pipes domain enabled status nicedate requestedListname
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requestedListname="$(GetListnameFromTypeId "${typeId}")"
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data="$(sqlite3 "${gravityDBfile}" "SELECT domain,enabled,date_modified FROM domainlist WHERE type = ${typeId};" 2> /dev/null)"
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if [[ -z $data ]]; then
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echo -e "Not showing empty list"
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else
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echo -e "Displaying ${requestedListname}:"
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count=1
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while IFS= read -r line
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do
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# Count number of pipes seen in this line
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# This is necessary because we can only detect the pipe separating the fields
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# from the end backwards as the domain (which is the first field) may contain
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# pipe symbols as they are perfectly valid regex filter control characters
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num_pipes="$(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 domainlist WHERE type = ${typeId};"
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}
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GetComment() {
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comment="$1"
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if [[ "${comment}" =~ [^a-zA-Z0-9_\#:/\.,\ -] ]]; then
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echo " ${CROSS} Found invalid characters in domain comment!"
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exit
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fi
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}
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while (( "$#" )); do
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case "${1}" in
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"-w" | "whitelist" ) typeId=0;;
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"-b" | "blacklist" ) typeId=1;;
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"--white-regex" | "white-regex" ) typeId=2;;
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"--white-wild" | "white-wild" ) typeId=2; wildcard=true;;
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"--wild" | "wildcard" ) typeId=3; wildcard=true;;
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"--regex" | "regex" ) typeId=3;;
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"-nr"| "--noreload" ) reload=false;;
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"-d" | "--delmode" ) addmode=false;;
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"-q" | "--quiet" ) verbose=false;;
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"-h" | "--help" ) helpFunc;;
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"-l" | "--list" ) Displaylist;;
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"--nuke" ) NukeList;;
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"--web" ) web=true;;
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"--comment" ) GetComment "${2}"; shift;;
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* ) ValidateDomain "${1}";;
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esac
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shift
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done
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shift
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if [[ ${domaincount} == 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-lists
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fi
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