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source "/etc/pihole/setupVars.conf"
PI_HOLE_BIN_DIR="/usr/bin"
webroot="/srv/http/pihole"
# from official basic-install.sh
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 "${stat}"
}
# from official utils.sh
addOrEditKeyValPair() {
local file="${1}"
local key="${2}"
local value="${3}"
# touch file to prevent grep error if file does not exist yet
touch "${file}"
if grep -q "^${key}=" "${file}"; then
# Key already exists in file, modify the value
sed -i "/^${key}=/c\\${key}=${value}" "${file}"
else
# Key does not already exist, add it and it's value
echo "${key}=${value}" >> "${file}"
fi
}
addKey(){
local file="${1}"
local key="${2}"
# touch file to prevent grep error if file does not exist yet
touch "${file}"
# Match key against entire line, using both anchors. We assume
# that the file's keys never have bounding whitespace. Anchors
# are necessary to ensure the key is considered absent when it
# is a substring of another key present in the file.
if ! grep -q "^${key}$" "${file}"; then
# Key does not exist, add it.
echo "${key}" >> "${file}"
fi
}
removeKey() {
local file="${1}"
local key="${2}"
sed -i "/^${key}/d" "${file}"
}
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