Use ss instead of lsof (#4518)

* Use ss instead of lsof for pihole status checks

Signed-off-by: DL6ER <dl6er@dl6er.de>

* Use ss FILTER instead of piping into bash

Signed-off-by: DL6ER <dl6er@dl6er.de>

* Use ss in debug log generation

Signed-off-by: DL6ER <dl6er@dl6er.de>

* Remove lsof from dependencies

Signed-off-by: DL6ER <dl6er@dl6er.de>

advanced/Scripts/piholeDebug.sh

@@ -733,11 +733,11 @@ compare_port_to_service_assigned() {
 
     # If the service is a Pi-hole service, highlight it in green
     if [[ "${service_name}" == "${expected_service}" ]]; then
-        log_write "[${COL_GREEN}${port}${COL_NC}] is in use by ${COL_GREEN}${service_name}${COL_NC}"
+        log_write "${TICK} ${COL_GREEN}${port}${COL_NC} is in use by ${COL_GREEN}${service_name}${COL_NC}"
     # Otherwise,
     else
         # Show the service name in red since it's non-standard
-        log_write "[${COL_RED}${port}${COL_NC}] is in use by ${COL_RED}${service_name}${COL_NC} (${FAQ_HARDWARE_REQUIREMENTS_PORTS})"
+        log_write "${CROSS} ${COL_RED}${port}${COL_NC} is in use by ${COL_RED}${service_name}${COL_NC} (${FAQ_HARDWARE_REQUIREMENTS_PORTS})"
     fi
 }
 
@@ -753,32 +753,28 @@ check_required_ports() {
     # Sort the addresses and remove duplicates
     while IFS= read -r line; do
         ports_in_use+=( "$line" )
-    done < <( lsof -iTCP -sTCP:LISTEN -P -n +c 10 )
+    done < <( ss --listening --numeric --tcp --udp --processes --oneline --no-header )
 
     # Now that we have the values stored,
     for i in "${!ports_in_use[@]}"; do
         # loop through them and assign some local variables
         local service_name
-        service_name=$(echo "${ports_in_use[$i]}" | awk '{print $1}')
+        service_name=$(echo "${ports_in_use[$i]}" | awk '{gsub(/users:\(\("/,"",$7);gsub(/".*/,"",$7);print $7}')
         local protocol_type
-        protocol_type=$(echo "${ports_in_use[$i]}" | awk '{print $5}')
+        protocol_type=$(echo "${ports_in_use[$i]}" | awk '{print $1}')
         local port_number
-        port_number="$(echo "${ports_in_use[$i]}" | awk '{print $9}')"
+        port_number="$(echo "${ports_in_use[$i]}" | awk '{print $5}')" #  | awk '{gsub(/^.*:/,"",$5);print $5}')
 
-        # Skip the line if it's the titles of the columns the lsof command produces
-        if [[ "${service_name}" == COMMAND ]]; then
-            continue
-        fi
         # Use a case statement to determine if the right services are using the right ports
-        case "$(echo "$port_number" | rev | cut -d: -f1 | rev)" in
-            53) compare_port_to_service_assigned  "${resolver}" "${service_name}" 53
+        case "$(echo "${port_number}" | rev | cut -d: -f1 | rev)" in
+            53) compare_port_to_service_assigned  "${resolver}" "${service_name}" "${protocol_type}:${port_number}"
                 ;;
-            80) compare_port_to_service_assigned  "${web_server}" "${service_name}" 80
+            80) compare_port_to_service_assigned  "${web_server}" "${service_name}" "${protocol_type}:${port_number}"
                 ;;
-            4711) compare_port_to_service_assigned  "${ftl}" "${service_name}" 4711
+            4711) compare_port_to_service_assigned  "${ftl}" "${service_name}" "${protocol_type}:${port_number}"
                 ;;
             # If it's not a default port that Pi-hole needs, just print it out for the user to see
-            *) log_write "${port_number} ${service_name} (${protocol_type})";
+            *) log_write "    ${protocol_type}:${port_number} is in use by ${service_name:=<unknown>}";
         esac
     done
 }

automated install/basic-install.sh

@@ -287,7 +287,7 @@ package_manager_detect() {
         # Packages required to run this install script (stored as an array)
         INSTALLER_DEPS=(git iproute2 whiptail ca-certificates)
         # Packages required to run Pi-hole (stored as an array)
-        PIHOLE_DEPS=(cron curl iputils-ping lsof psmisc sudo unzip idn2 sqlite3 libcap2-bin dns-root-data libcap2 netcat)
+        PIHOLE_DEPS=(cron curl iputils-ping psmisc sudo unzip idn2 sqlite3 libcap2-bin dns-root-data libcap2 netcat)
         # Packages required for the Web admin interface (stored as an array)
         # It's useful to separate this from Pi-hole, since the two repos are also setup separately
         PIHOLE_WEB_DEPS=(lighttpd "${phpVer}-common" "${phpVer}-cgi" "${phpVer}-sqlite3" "${phpVer}-xml" "${phpVer}-intl")
@@ -332,7 +332,7 @@ package_manager_detect() {
         PKG_COUNT="${PKG_MANAGER} check-update | egrep '(.i686|.x86|.noarch|.arm|.src)' | wc -l"
         OS_CHECK_DEPS=(grep bind-utils)
         INSTALLER_DEPS=(git iproute newt procps-ng which chkconfig ca-certificates)
-        PIHOLE_DEPS=(cronie curl findutils sudo unzip libidn2 psmisc sqlite libcap lsof nmap-ncat)
+        PIHOLE_DEPS=(cronie curl findutils sudo unzip libidn2 psmisc sqlite libcap nmap-ncat)
         PIHOLE_WEB_DEPS=(lighttpd lighttpd-fastcgi php-common php-cli php-pdo php-xml php-json php-intl)
         LIGHTTPD_USER="lighttpd"
         LIGHTTPD_GROUP="lighttpd"

pihole

@@ -283,26 +283,29 @@ Options:
 }
 
 analyze_ports() {
+  local lv4 lv6 port=${1}
   # FTL is listening at least on at least one port when this
   # function is getting called
   # Check individual address family/protocol combinations
   # For a healthy Pi-hole, they should all be up (nothing printed)
-  if grep -q "IPv4.*UDP" <<< "${1}"; then
+  lv4="$(ss --ipv4 --listening --numeric --tcp --udp src :${port})"
+  if grep -q "udp " <<< "${lv4}"; then
       echo -e "     ${TICK} UDP (IPv4)"
   else
       echo -e "     ${CROSS} UDP (IPv4)"
   fi
-  if grep -q "IPv4.*TCP" <<< "${1}"; then
+  if grep -q "tcp " <<< "${lv4}"; then
       echo -e "     ${TICK} TCP (IPv4)"
   else
       echo -e "     ${CROSS} TCP (IPv4)"
   fi
-  if grep -q "IPv6.*UDP" <<< "${1}"; then
+  lv6="$(ss --ipv6 --listening --numeric --tcp --udp src :${port})"
+  if grep -q "udp " <<< "${lv6}"; then
       echo -e "     ${TICK} UDP (IPv6)"
   else
       echo -e "     ${CROSS} UDP (IPv6)"
   fi
-  if grep -q "IPv6.*TCP" <<< "${1}"; then
+  if grep -q "tcp " <<< "${lv6}"; then
       echo -e "     ${TICK} TCP (IPv6)"
   else
       echo -e "     ${CROSS} TCP (IPv6)"
@@ -324,7 +327,6 @@ statusFunc() {
   else
     #get the port pihole-FTL is listening on by using FTL's telnet API
     port="$(echo ">dns-port >quit" | nc 127.0.0.1 4711)"
-    listening="$(lsof -Pni:${port})"
     if [[ "${port}" == "0" ]]; then
       case "${1}" in
         "web") echo "-1";;
@@ -334,7 +336,7 @@ statusFunc() {
     else
       if [[ "${1}" != "web" ]]; then
         echo -e "  ${TICK} FTL is listening on port ${port}"
-        analyze_ports "${listening}"
+        analyze_ports "${port}"
       fi
     fi
   fi