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Merge pull request #4162 from yubiuser/debug_tail_log
Add tail of pihole.log to debug output
This commit is contained in:
Adam Warner
GitHub
commit
118c0d209d
1 changed files with 67 additions and 49 deletions
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@ -1281,56 +1281,74 @@ analyze_gravity_list() {
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IFS="$OLD_IFS"
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}
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obfuscated_pihole_log() {
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local pihole_log=("$@")
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local line
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local error_to_check_for
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local line_to_obfuscate
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local obfuscated_line
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for line in "${pihole_log[@]}"; do
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# A common error in the pihole.log is when there is a non-hosts formatted file
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# that the DNS server is attempting to read. Since it's not formatted
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# correctly, there will be an entry for "bad address at line n"
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# So we can check for that here and highlight it in red so the user can see it easily
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error_to_check_for=$(echo "${line}" | grep 'bad address at')
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# Some users may not want to have the domains they visit sent to us
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# To that end, we check for lines in the log that would contain a domain name
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line_to_obfuscate=$(echo "${line}" | grep ': query\|: forwarded\|: reply')
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# If the variable contains a value, it found an error in the log
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if [[ -n ${error_to_check_for} ]]; then
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# So we can print it in red to make it visible to the user
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log_write " ${CROSS} ${COL_RED}${head_line}${COL_NC} (${FAQ_BAD_ADDRESS})"
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else
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# If the variable does not a value (the current default behavior), so do not obfuscate anything
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if [[ -z ${OBFUSCATE} ]]; then
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log_write " ${line}"
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# Othwerise, a flag was passed to this command to obfuscate domains in the log
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else
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# So first check if there are domains in the log that should be obfuscated
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if [[ -n ${line_to_obfuscate} ]]; then
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# If there are, we need to use awk to replace only the domain name (the 6th field in the log)
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# so we substitute the domain for the placeholder value
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obfuscated_line=$(echo "${line_to_obfuscate}" | awk -v placeholder="${OBFUSCATED_PLACEHOLDER}" '{sub($6,placeholder); print $0}')
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log_write " ${obfuscated_line}"
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else
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log_write " ${line}"
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fi
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fi
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fi
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done
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}
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analyze_pihole_log() {
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echo_current_diagnostic "Pi-hole log"
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local head_line
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# Put the current Internal Field Separator into another variable so it can be restored later
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OLD_IFS="$IFS"
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# Get the lines that are in the file(s) and store them in an array for parsing later
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IFS=$'\r\n'
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local pihole_log_permissions
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pihole_log_permissions=$(ls -ld "${PIHOLE_LOG}")
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log_write "${COL_GREEN}${pihole_log_permissions}${COL_NC}"
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local pihole_log_head=()
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mapfile -t pihole_log_head < <(head -n 20 ${PIHOLE_LOG})
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log_write " ${COL_CYAN}-----head of $(basename ${PIHOLE_LOG})------${COL_NC}"
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local error_to_check_for
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local line_to_obfuscate
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local obfuscated_line
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for head_line in "${pihole_log_head[@]}"; do
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# A common error in the pihole.log is when there is a non-hosts formatted file
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# that the DNS server is attempting to read. Since it's not formatted
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# correctly, there will be an entry for "bad address at line n"
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# So we can check for that here and highlight it in red so the user can see it easily
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error_to_check_for=$(echo "${head_line}" | grep 'bad address at')
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# Some users may not want to have the domains they visit sent to us
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# To that end, we check for lines in the log that would contain a domain name
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line_to_obfuscate=$(echo "${head_line}" | grep ': query\|: forwarded\|: reply')
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# If the variable contains a value, it found an error in the log
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if [[ -n ${error_to_check_for} ]]; then
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# So we can print it in red to make it visible to the user
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log_write " ${CROSS} ${COL_RED}${head_line}${COL_NC} (${FAQ_BAD_ADDRESS})"
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else
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# If the variable does not a value (the current default behavior), so do not obfuscate anything
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if [[ -z ${OBFUSCATE} ]]; then
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log_write " ${head_line}"
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# Othwerise, a flag was passed to this command to obfuscate domains in the log
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else
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# So first check if there are domains in the log that should be obfuscated
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if [[ -n ${line_to_obfuscate} ]]; then
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# If there are, we need to use awk to replace only the domain name (the 6th field in the log)
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# so we substitute the domain for the placeholder value
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obfuscated_line=$(echo "${line_to_obfuscate}" | awk -v placeholder="${OBFUSCATED_PLACEHOLDER}" '{sub($6,placeholder); print $0}')
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log_write " ${obfuscated_line}"
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else
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log_write " ${head_line}"
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fi
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fi
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fi
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done
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log_write ""
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# Set the IFS back to what it was
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IFS="$OLD_IFS"
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echo_current_diagnostic "Pi-hole log"
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local pihole_log_head=()
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local pihole_log_tail=()
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local pihole_log_permissions
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local logging_enabled
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logging_enabled=$(grep -c "^log-queries" /etc/dnsmasq.d/01-pihole.conf)
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if [[ "${logging_enabled}" == "0" ]]; then
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# Inform user that logging has been disabled and pihole.log does not contain queries
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log_write "${INFO} Query logging is disabled"
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log_write ""
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fi
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# Put the current Internal Field Separator into another variable so it can be restored later
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OLD_IFS="$IFS"
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# Get the lines that are in the file(s) and store them in an array for parsing later
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IFS=$'\r\n'
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pihole_log_permissions=$(ls -ld "${PIHOLE_LOG}")
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log_write "${COL_GREEN}${pihole_log_permissions}${COL_NC}"
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mapfile -t pihole_log_head < <(head -n 20 ${PIHOLE_LOG})
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log_write " ${COL_CYAN}-----head of $(basename ${PIHOLE_LOG})------${COL_NC}"
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obfuscated_pihole_log "${pihole_log_head[@]}"
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log_write ""
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mapfile -t pihole_log_tail < <(tail -n 20 ${PIHOLE_LOG})
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log_write " ${COL_CYAN}-----tail of $(basename ${PIHOLE_LOG})------${COL_NC}"
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obfuscated_pihole_log "${pihole_log_tail[@]}"
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log_write ""
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# Set the IFS back to what it was
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IFS="$OLD_IFS"
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}
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tricorder_use_nc_or_curl() {
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