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87 lines
1.6 KiB
87 lines
1.6 KiB
#!/bin/bash
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# function to exit with message and code
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die() {
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[[ -n "$2" ]] && printf "%s\n" "$2"
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[[ -n "$1" ]] && exit "$1" || exit 127
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}
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url="https://dyn.dns.he.net/nic/update"
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help_text="Usage: $0 [OPTIONS] DOMAIN KEYFILE
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Update Hurricane Electric Dynamic DNS for DOMAIN with key in KEYFILE.
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Requires curl to be installed in \$PATH.
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Options:
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-c, --config FILE get configuration from FILE instead of $config
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-4, --ipv4 use IPv4
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-6, --ipv6 use IPv6
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-u, --url URL update dns at URL instead of $url
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-h, --help display this help
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https://gitlab.com/rascul/he-ddns
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"
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show_help() {
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printf "%s" "$help_text"
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}
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args=
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ipv4=
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ipv6=
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config=/etc/he-ddnsrc
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while (($#)); do
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case $1 in
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-c|--config)
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if [[ -n "$2" ]]; then
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config="$2"
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shift
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else
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die $LINENO "$help_text"
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fi
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;;
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-4|--ipv4)
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ipv4=true
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;;
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-6|--ipv6)
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ipv6=true
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;;
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-u|--url)
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if [[ -n "$2" ]]; then
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url="$2"
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shift
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else
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die $LINENO "$help_text"
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fi
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;;
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-h|--help)
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show_help
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exit
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;;
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*)
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args+=("$1")
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;;
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esac
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shift
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done
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domain="${args[1]}"
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key=$(<"${args[2]}") || die $LINENO
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if [[ "$ipv4" != "true" ]] && [[ "$ipv6" != "true" ]]; then
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echo "Must specify either IPv4 or IPv6"
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fi
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if [[ "$ipv4" == "true" ]]; then
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ip="$(curl -sSL4 https://ifconfig.co/ip)" || die $LINENO
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curl -sSL4 "$url" -d "hostname=$domain" -d "password=$key" -d "myip=$ip" || die $LINENO
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echo
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fi
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if [[ "$ipv6" == "true" ]]; then
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ip="$(curl -sSL6 https://ifconfig.co/ip)" || die $LINENO
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curl -sSL6 "$url" -d "hostname=$domain" -d "password=$key" -d "myip=$ip" || die $LINENO
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echo
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fi
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