88 lines
3.1 KiB
Bash
88 lines
3.1 KiB
Bash
#!/bin/bash
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# ------------------------------------------------------------------------------
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# Copyright (c) 2013-2022 Geoffray Levasseur <fatalerrors@geoffray-levasseur.org>
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# Protected by the BSD3 license. Please read bellow for details.
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#
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# * Redistribution and use in source and binary forms,
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# * with or without modification, are permitted provided
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# * that the following conditions are met:
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# *
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# * Redistributions of source code must retain the above
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# * copyright notice, this list of conditions and the
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# * following disclaimer.
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# *
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# * Redistributions in binary form must reproduce the above
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# * copyright notice, this list of conditions and the following
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# * disclaimer in the documentation and/or other materials
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# * provided with the distribution.
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# *
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# * Neither the name of the copyright holder nor the names
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# * of any other contributors may be used to endorse or
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# * promote products derived from this software without
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# * specific prior written permission.
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# *
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# * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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# * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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# * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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# * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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# * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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# * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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# * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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# * OF SUCH DAMAGE.
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# ------------------------------------------------------------------------------
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# ------------------------------------------------------------------------------
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# Determine if parameter is a valid IPv4 address
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# ------------------------------------------------------------------------------
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isipv4()
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{
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# Set up local variables
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local ip=$1
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# Start with a regex format test
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if [[ $ip =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
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local old_ifs=$IFS
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IFS="."
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ip=($ip)
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IFS=$old_ifs
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if [[ ${ip[0]} -le 255 && ${ip[1]} -le 255 &&
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${ip[2]} -le 255 && ${ip[3]} -le 255 ]]; then
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if [[ -t 1 ]]; then
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disp "The given IPv4 is valid."
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fi
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return 0
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fi
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fi
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if [[ -t 1 ]]; then
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disp "The given parameter is NOT a valid IPv4."
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fi
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return 1
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}
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export -f isipv4
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# ------------------------------------------------------------------------------
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# Determine if parameter is a valid IPv4 address
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# ------------------------------------------------------------------------------
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isipv6()
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{
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local ip="$1"
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local regex='^([0-9a-fA-F]{0,4}:){1,7}[0-9a-fA-F]{0,4}$'
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if [[ $ip =~ $regex ]]; then
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if [[ -t 1 ]]; then
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disp "The given IPv6 is valid."
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fi
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return 0
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fi
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if [[ -t 1 ]]; then
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disp "The given parameter is not a valid IPv6."
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fi
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return 1
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}
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export -f isipv6
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# ------------------------------------------------------------------------------
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# EOF
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