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pi-hole/advanced/Scripts/utils.sh
Christian König 42424b515b Add getFTLAPIPort function
Add ftl_api_port function

Signed-off-by: Christian König <ckoenig@posteo.de>

Use getFTLAPIPort in pihole

Signed-off-by: Christian König <ckoenig@posteo.de>

Use default portfile as fallback

Signed-off-by: Christian König <ckoenig@posteo.de>

Fix stickler

Signed-off-by: Christian König <ckoenig@posteo.de>

Correct variables

Signed-off-by: Christian König <ckoenig@posteo.de>

Apply suggestions from code review

Co-authored-by: DL6ER <DL6ER@users.noreply.github.com>

Add test getFTLAPIPort returing default port

Signed-off-by: Christian König <ckoenig@posteo.de>

Remove unused code from test_key_val_replacement_works

Signed-off-by: Christian König <ckoenig@posteo.de>

Add getFTLAPIPort_custom test

Signed-off-by: Christian König <ckoenig@posteo.de>

Fix output format

Signed-off-by: Christian König <ckoenig@posteo.de>

Add debugging

Signed-off-by: Christian König <ckoenig@posteo.de>

Remove debugging and fix function

Signed-off-by: Christian König <ckoenig@posteo.de>
2022-02-27 18:16:53 +01:00

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Executable File

#!/usr/bin/env bash
# Pi-hole: A black hole for Internet advertisements
# (c) 2017 Pi-hole, LLC (https://pi-hole.net)
# Network-wide ad blocking via your own hardware.
#
# Script to hold utility functions for use in other scripts
#
# This file is copyright under the latest version of the EUPL.
# Please see LICENSE file for your rights under this license.
# Basic Housekeeping rules
# - Functions must be self contained
# - Functions must be added in alphabetical order
# - Functions must be documented
# - New functions must have a test added for them in test/test_any_utils.py
#######################
# Takes three arguments key, value, and file.
# Checks the target file for the existence of the key
# - If it exists, it changes the value
# - If it does not exist, it adds the value
#
# Example usage:
# addOrEditKeyValuePair "BLOCKING_ENABLED" "true" "/etc/pihole/setupVars.conf"
#######################
addOrEditKeyValPair() {
local key="${1}"
local value="${2}"
local file="${3}"
if grep -q "^${key}=" "${file}"; then
sed -i "/^${key}=/c\\${key}=${value}" "${file}"
else
echo "${key}=${value}" >> "${file}"
fi
}
#######################
# returns FTL's current telnet API port
#######################
getFTLAPIPort(){
local -r FTLCONFFILE="/etc/pihole/pihole-FTL.conf"
local -r DEFAULT_PORT_FILE="/run/pihole-FTL.port"
local -r DEFAULT_FTL_PORT=4711
local PORTFILE
local ftl_api_port
if [[ -f "$FTLCONFFILE" ]]; then
# if PORTFILE is not set in pihole-FTL.conf, use the default path
PORTFILE="$( (grep "^PORTFILE=" $FTLCONFFILE || echo "$DEFAULT_PORT_FILE") | cut -d"=" -f2-)"
fi
if [[ -s "$PORTFILE" ]]; then
# -s: FILE exists and has a size greater than zero
ftl_api_port=$(<"$PORTFILE")
# Exploit prevention: unset the variable if there is malicious content
# Verify that the value read from the file is numeric
[[ "$ftl_api_port" =~ [^[:digit:]] ]] && unset ftl_api_port
fi
# echo the port found in the portfile or default to the default port
echo "${ftl_api_port:=$DEFAULT_FTL_PORT}"
}