Modify debugger to test name resolution on all available interfaces

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

advanced/Scripts/chronometer.sh

@@ -498,10 +498,6 @@ chronoFunc() {
         printFunc " RAM usage: " "$ram_perc%" "$ram_info"
         printFunc " HDD usage: " "$disk_perc" "$disk_info"
 
-        if [[ "$scr_lines" -gt 17 ]] && [[ "$chrono_width" != "small" ]]; then
-            printFunc "  LAN addr: " "${IPV4_ADDRESS/\/*/}" "$lan_info"
-        fi
-
         if [[ "$DHCP_ACTIVE" == "true" ]]; then
             printFunc "DHCP usage: " "$ph_dhcp_percent%" "$dhcp_info"
         fi

advanced/Scripts/piholeDebug.sh

@@ -859,7 +859,6 @@ dig_at() {
 
     # Store the arguments as variables with names
     local protocol="${1}"
-    local IP="${2}"
     echo_current_diagnostic "Name resolution (IPv${protocol}) using a random blocked domain and a known ad-serving domain"
     # Set more local variables
     # We need to test name resolution locally, via Pi-hole, and via a public resolver
@@ -874,15 +873,15 @@ dig_at() {
     if [[ ${protocol} == "6" ]]; then
         # Set the IPv6 variables and record type
         local local_address="::1"
-        local pihole_address="${IP}"
         local remote_address="2001:4860:4860::8888"
+        local sed_selector="inet6"
         local record_type="AAAA"
     # Otherwise, it should be 4
     else
         # so use the IPv4 values
         local local_address="127.0.0.1"
-        local pihole_address="${IP}"
         local remote_address="8.8.8.8"
+        local sed_selector="inet"
         local record_type="A"
     fi
 
@@ -895,25 +894,53 @@ dig_at() {
     # First, do a dig on localhost to see if Pi-hole can use itself to block a domain
     if local_dig=$(dig +tries=1 +time=2 -"${protocol}" "${random_url}" @${local_address} +short "${record_type}"); then
         # If it can, show success
-        log_write "${TICK} ${random_url} ${COL_GREEN}is ${local_dig}${COL_NC} via ${COL_CYAN}localhost$COL_NC (${local_address})"
+        log_write "${TICK} ${random_url} ${COL_GREEN}is ${local_dig}${COL_NC} via ${COL_CYAN}localhost$COL_NC at ${COL_CYAN}${local_address}${CON_NC}"
     else
         # Otherwise, show a failure
-        log_write "${CROSS} ${COL_RED}Failed to resolve${COL_NC} ${random_url} via ${COL_RED}localhost${COL_NC} (${local_address})"
+        log_write "${CROSS} ${COL_RED}Failed to resolve${COL_NC} ${random_url} via ${COL_RED}localhost${COL_NC} at ${COL_CYAN}${local_address}${CON_NC}"
     fi
 
     # Next we need to check if Pi-hole can resolve a domain when the query is sent to it's IP address
     # This better emulates how clients will interact with Pi-hole as opposed to above where Pi-hole is
     # just asing itself locally
-    # The default timeouts and tries are reduced in case the DNS server isn't working, so the user isn't waiting for too long
+    # The default timeouts and tries are reduced in case the DNS server isn't working, so the user isn't
+    # waiting for too long
+    #
+    # Turn off history expansion such that the "!" in the sed command cannot do silly things
+    set +H
+    # Get interfaces
+    # sed logic breakdown:
+    #     / master /d;
+    #          Removes all interfaces that are slaves of others (e.g. virtual docker interfaces)
+    #     /UP/!d;
+    #          Removes all interfaces which are not UP
+    #     s/^[0-9]*: //g;
+    #          Removes interface index
+    #     s/: <.*//g;
+    #          Removes everything after the interface name
+    local interfaces="$(ip link show | sed "/ master /d;/UP/!d;s/^[0-9]*: //g;s/: <.*//g;")"
 
-    # If Pi-hole can dig itself from it's IP (not the loopback address)
+    while IFS= read -r iface ; do
-    if pihole_dig=$(dig +tries=1 +time=2 -"${protocol}" "${random_url}" @"${pihole_address}" +short "${record_type}"); then
+        # Get addresses of current interface
-        # show a success
+        # sed logic breakdown:
-        log_write "${TICK} ${random_url} ${COL_GREEN}is ${pihole_dig}${COL_NC} via ${COL_CYAN}Pi-hole${COL_NC} (${pihole_address})"
+        #     /inet(|6) /!d;
+        #          Removes all lines from ip a that do not contain either "inet " or "inet6 "
+        #     s/^.*inet(|6) //g;
+        #          Removes all leading whitespace as well as the "inet " or "inet6 " string
+        #     s/\/.*$//g;
+        #          Removes CIDR and everything thereafter (e.g., scope properties)
+        local addresses="$(ip address show dev "${iface}" | sed "/${sed_selector} /!d;s/^.*${sed_selector} //g;s/\/.*$//g;")"
+        while IFS= read -r local_address ; do
+            # Check if Pi-hole can use itself to block a domain
+            if local_dig=$(dig +tries=1 +time=2 -"${protocol}" "${random_url}" @${local_address} +short "${record_type}"); then
+                # If it can, show success
+                log_write "${TICK} ${random_url} ${COL_GREEN}is ${local_dig}${COL_NC} on ${COL_CYAN}${iface}${COL_NC} (${COL_CYAN}${local_address}${COL_NC})"
             else
                 # Otherwise, show a failure
-        log_write "${CROSS} ${COL_RED}Failed to resolve${COL_NC} ${random_url} via ${COL_RED}Pi-hole${COL_NC} (${pihole_address})"
+                log_write "${CROSS} ${COL_RED}Failed to resolve${COL_NC} ${random_url} on ${COL_RED}${iface}${COL_NC} (${COL_RED}${local_address}${COL_NC})"
             fi
+        done <<< "${addresses}"
+    done <<< "${interfaces}"
 
     # Finally, we need to make sure legitimate queries can out to the Internet using an external, public DNS server
     # We are using the static remote_url here instead of a random one because we know it works with IPv4 and IPv6
@@ -1046,12 +1073,8 @@ parse_file() {
 check_name_resolution() {
     # Check name resolution from localhost, Pi-hole's IP, and Google's name severs
     # using the function we created earlier
-    dig_at 4 "${IPV4_ADDRESS%/*}"
+    dig_at 4
-    # If IPv6 enabled,
+    dig_at 6
-    if [[ "${IPV6_ADDRESS}" ]]; then
-        # check resolution
-        dig_at 6 "${IPV6_ADDRESS%/*}"
-    fi
 }
 
 # This function can check a directory exists