From e6ae2e98cc3b6171c9777ed5bf935ba27c8f9d19 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20K=C3=B6nig?= <ckoenig@posteo.de>
Date: Sun, 7 May 2023 13:21:23 +0200
Subject: [PATCH] Don't source the install script in webpage.sh
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Christian König <ckoenig@posteo.de>
---
 advanced/Scripts/webpage.sh | 54 ++++++++++++++++++++++++++++++++-----
 1 file changed, 48 insertions(+), 6 deletions(-)

diff --git a/advanced/Scripts/webpage.sh b/advanced/Scripts/webpage.sh
index 5ccdf733..6492a74d 100755
--- a/advanced/Scripts/webpage.sh
+++ b/advanced/Scripts/webpage.sh
@@ -22,12 +22,14 @@ readonly dnscustomcnamefile="/etc/dnsmasq.d/05-pihole-custom-cname.conf"
 
 readonly gravityDBfile="/etc/pihole/gravity.db"
 
-# Source install script for ${setupVars}, ${PI_HOLE_BIN_DIR} and valid_ip()
-readonly PI_HOLE_FILES_DIR="/etc/.pihole"
-# shellcheck disable=SC2034  # used in basic-install to source the script without running it
-SKIP_INSTALL="true"
-source "${PI_HOLE_FILES_DIR}/automated install/basic-install.sh"
 
+readonly setupVars="/etc/pihole/setupVars.conf"
+readonly PI_HOLE_BIN_DIR="/usr/local/bin"
+
+# Root of the web server
+readonly webroot="/var/www/html"
+
+# Source utils script
 utilsfile="/opt/pihole/utils.sh"
 source "${utilsfile}"
 
@@ -98,6 +100,47 @@ HashPassword() {
     echo "${return}"
 }
 
+# Check an IP address to see if it is a valid one
+valid_ip() {
+    # Local, named variables
+    local ip=${1}
+    local stat=1
+
+    # Regex matching one IPv4 component, i.e. an integer from 0 to 255.
+    # See https://tools.ietf.org/html/rfc1340
+    local ipv4elem="(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9][0-9]?|0)";
+    # Regex matching an optional port (starting with '#') range of 1-65536
+    local portelem="(#(6553[0-5]|655[0-2][0-9]|65[0-4][0-9]{2}|6[0-4][0-9]{3}|[1-5][0-9]{4}|[1-9][0-9]{0,3}|0))?";
+    # Build a full IPv4 regex from the above subexpressions
+    local regex="^${ipv4elem}\\.${ipv4elem}\\.${ipv4elem}\\.${ipv4elem}${portelem}$"
+
+    # Evaluate the regex, and return the result
+    [[ $ip =~ ${regex} ]]
+
+    stat=$?
+    return "${stat}"
+}
+
+valid_ip6() {
+    local ip=${1}
+    local stat=1
+
+    # Regex matching one IPv6 element, i.e. a hex value from 0000 to FFFF
+    local ipv6elem="[0-9a-fA-F]{1,4}"
+    # Regex matching an IPv6 CIDR, i.e. 1 to 128
+    local v6cidr="(\\/([1-9]|[1-9][0-9]|1[0-1][0-9]|12[0-8])){0,1}"
+    # Regex matching an optional port (starting with '#') range of 1-65536
+    local portelem="(#(6553[0-5]|655[0-2][0-9]|65[0-4][0-9]{2}|6[0-4][0-9]{3}|[1-5][0-9]{4}|[1-9][0-9]{0,3}|0))?";
+    # Build a full IPv6 regex from the above subexpressions
+    local regex="^(((${ipv6elem}))*((:${ipv6elem}))*::((${ipv6elem}))*((:${ipv6elem}))*|((${ipv6elem}))((:${ipv6elem})){7})${v6cidr}${portelem}$"
+
+    # Evaluate the regex, and return the result
+    [[ ${ip} =~ ${regex} ]]
+
+    stat=$?
+    return "${stat}"
+}
+
 SetWebPassword() {
     if [ "${SUDO_USER}" == "www-data" ]; then
         echo "Security measure: user www-data is not allowed to change webUI password!"
@@ -613,7 +656,6 @@ Teleporter() {
         host="${host//./_}"
         filename="pi-hole-${host:-noname}-teleporter_${datetimestamp}.tar.gz"
     fi
-    # webroot is sourced from basic-install above
     php "${webroot}/admin/scripts/pi-hole/php/teleporter.php" > "${filename}"
 }