Revision of Dynamic DNS Update (Hetzner Console)

dominic revisou este gist 2 days ago. Ir para a revisão

1 file changed, 2 insertions, 1 deletion

update-ip.sh

			@@ -1,5 +1,6 @@
1		-	#!/bin/bash
	1	+	#!/bin/sh
2	2		# Created on 2025-12-07 12:22 UTC
	3	+	# Author: Dominic Reich (OE7DRT) <quick.hat4396@qtztsjosmprqmgtunjyf.com>
3	4		#
4	5		# Removed IPv6 as this way does not get the real IPv6 address (why?)
5	6		# 2025-12-24

dominic revisou este gist 2 days ago. Ir para a revisão

1 file changed, 36 insertions, 32 deletions

update-ip.sh

			@@ -1,6 +1,8 @@
1		-	#!/bin/sh
	1	+	#!/bin/bash
2	2		# Created on 2025-12-07 12:22 UTC
3		-	# Author: Dominic Reich (OE7DRT) <quick.hat4396@qtztsjosmprqmgtunjyf.com>
	3	+	#
	4	+	# Removed IPv6 as this way does not get the real IPv6 address (why?)
	5	+	# 2025-12-24
4	6
5	7		# Get my outgoing ipv4 address via ifconfig.me and compare it with the recent ip saved in ~/.my-ipv4
6	8		# Update dns with the actual ipv4 if it changed
			@@ -37,7 +39,7 @@ RR_COMMENT6=""
37	39
38	40		# remote ipv4
39	41		IPREMOTE4=$(curl -4 -sgkL https://ifconfig.me/ip 2>/dev/null)
40		-	IPREMOTE6=$(curl -6 -sgkL https://ifconfig.me/ip 2>/dev/null)
	42	+	# IPREMOTE6=$(curl -6 -sgkL https://ifconfig.me/ip 2>/dev/null)
41	43		# echo "DBG: got ip ${IPREMOTE4}"
42	44
43	45		# check if remote ips contain valid data
			@@ -56,15 +58,15 @@ else
56	58		fi
57	59
58	60		#check for IP6
59		-	if [ -w "${IPFILE6}" -a -f "${IPFILE6}" ]
60		-	then
61		-	SAVEDIP6=$(cat ${IPFILE6})
62		-	# echo "DBG: saved ip is ${SAVEDIP4}"
63		-	else
64		-	# no existing ipv4 file, create one and add new ipv4 into it
65		-	/bin/echo -n "${IPREMOTE6}" > ${IPFILE6}
66		-	# echo "DBG: saved ip ${IPREMOTE4} to file ${IPFILE4}"
67		-	fi
	61	+	# if [ -w "${IPFILE6}" -a -f "${IPFILE6}" ]
	62	+	# then
	63	+	# SAVEDIP6=$(cat ${IPFILE6})
	64	+	# # echo "DBG: saved ip is ${SAVEDIP4}"
	65	+	# else
	66	+	# # no existing ipv4 file, create one and add new ipv4 into it
	67	+	# /bin/echo -n "${IPREMOTE6}" > ${IPFILE6}
	68	+	# # echo "DBG: saved ip ${IPREMOTE4} to file ${IPFILE4}"
	69	+	# fi
68	70
69	71		# check if remote ip is identical as locally saved ip
70	72		if [ "${SAVEDIP4}x" = "${IPREMOTE4}x" ]
			@@ -73,6 +75,7 @@ then
73	75		# echo "DBG: do nothing, ips are equal"
74	76		echo >&2 "IPv4 identical. Nothing to do"
75	77		else
	78	+	echo >&2 "Setting IPv4 address to ${IPREMOTE4}"
76	79		# ips differ, update dns ip with remote ip and save into local ip file
77	80		curl -s -g -X POST -H "Authorization: Bearer ${AUTH_TOKEN}" \
78	81		-H "Content-Type: application/json" \
			@@ -89,23 +92,24 @@ then
89	92		fi
90	93
91	94		# and repeat for ipv6
92		-	if [ "${SAVEDIP6}x" = "${IPREMOTE6}x" ]
93		-	then
94		-	# if remote ip is equal as locally saved (old) ip
95		-	# echo "DBG: do nothing, ips are equal"
96		-	echo >&2 "IPv6 identical. Nothing to do"
97		-	else
98		-	# ips differ, update dns ip with remote ip and save into local ip file
99		-	curl -s -g -X POST -H "Authorization: Bearer ${AUTH_TOKEN}" \
100		-	-H "Content-Type: application/json" \
101		-	-d '{"records":[{"value":"'${IPREMOTE6}'","comment":"'${RR_COMMENT6}'"}]}' \
102		-	"${API_URL}${ZONE_ID}/rrsets/${RR_NAME}/${RR_TYPE6}/actions/set_records" > /dev/null
103		-	/bin/echo -n "${IPREMOTE6}" > ${IPFILE6}
104		-	fi
105		-
106		-	if [ "${CHECK}x" = "truex" ]
107		-	then
108		-	# also check for ipv6
109		-	curl -s -H "Authorization: Bearer ${AUTH_TOKEN}" \
110		-	"${API_URL}${ZONE_ID}/rrsets/${RR_NAME}/${RR_TYPE6}" \| ${JQ} "[.[] \| .records]"
111		-	fi
	95	+	# if [ "${SAVEDIP6}x" = "${IPREMOTE6}x" ]
	96	+	# then
	97	+	# # if remote ip is equal as locally saved (old) ip
	98	+	# # echo "DBG: do nothing, ips are equal"
	99	+	# echo >&2 "IPv6 identical. Nothing to do"
	100	+	# else
	101	+	# echo >&2 "Setting IPv6 address to ${IPREMOTE6}"
	102	+	# # ips differ, update dns ip with remote ip and save into local ip file
	103	+	# curl -s -g -X POST -H "Authorization: Bearer ${AUTH_TOKEN}" \
	104	+	# -H "Content-Type: application/json" \
	105	+	# -d '{"records":[{"value":"'${IPREMOTE6}'","comment":"'${RR_COMMENT6}'"}]}' \
	106	+	# "${API_URL}${ZONE_ID}/rrsets/${RR_NAME}/${RR_TYPE6}/actions/set_records" > /dev/null
	107	+	# /bin/echo -n "${IPREMOTE6}" > ${IPFILE6}
	108	+	# fi
	109	+	#
	110	+	# if [ "${CHECK}x" = "truex" ]
	111	+	# then
	112	+	# # also check for ipv6
	113	+	# curl -s -H "Authorization: Bearer ${AUTH_TOKEN}" \
	114	+	# "${API_URL}${ZONE_ID}/rrsets/${RR_NAME}/${RR_TYPE6}" \| ${JQ} "[.[] \| .records]"
	115	+	# fi

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1 file changed, 111 insertions

update-ip.sh(arquivo criado)

		@@ -0,0 +1,111 @@
1	+	#!/bin/sh
2	+	# Created on 2025-12-07 12:22 UTC
3	+	# Author: Dominic Reich (OE7DRT) <quick.hat4396@qtztsjosmprqmgtunjyf.com>
4	+
5	+	# Get my outgoing ipv4 address via ifconfig.me and compare it with the recent ip saved in ~/.my-ipv4
6	+	# Update dns with the actual ipv4 if it changed
7	+
8	+	# set default value for CHECK
9	+	# override this when starting the script like `CHECK=true update-ip.sh`
10	+	: "${CHECK:=false}"
11	+
12	+	if [ "${CHECK}x" = "truex" ]
13	+	then
14	+	# currently abort if jq is not installed
15	+	# might enter another routine to still display the record at the end
16	+	command -v jq > /dev/null 2>&1 \|\| { echo >&2 "jq not found"; exit 1; }
17	+
18	+	# jq may be placed somewhere in /usr/local so first get the real path
19	+	JQ=$(command -v jq)
20	+	fi
21	+
22	+	# specify file names
23	+	IPFILE4="${HOME}/.my-ipv4"
24	+	IPFILE6="${HOME}/.my-ipv6"
25	+
26	+	# Auth token (Hetzner new dns console as of Dec 2025)
27	+	API_URL="https://api.hetzner.cloud/v1/zones/"
28	+	AUTH_TOKEN=""
29	+
30	+	# Domain settings (zone id, rrset name, rrset type)
31	+	ZONE_ID="domain.local"
32	+	RR_NAME="@"
33	+	RR_TYPE4="A"
34	+	RR_TYPE6="AAAA"
35	+	RR_COMMENT4=""
36	+	RR_COMMENT6=""
37	+
38	+	# remote ipv4
39	+	IPREMOTE4=$(curl -4 -sgkL https://ifconfig.me/ip 2>/dev/null)
40	+	IPREMOTE6=$(curl -6 -sgkL https://ifconfig.me/ip 2>/dev/null)
41	+	# echo "DBG: got ip ${IPREMOTE4}"
42	+
43	+	# check if remote ips contain valid data
44	+	# TODO:
45	+	# get info about useful regex on ipv4 and ipv6 addresses
46	+
47	+	# check if old IP4 is saved in file
48	+	if [ -w "${IPFILE4}" -a -f "${IPFILE4}" ]
49	+	then
50	+	SAVEDIP4=$(cat ${IPFILE4})
51	+	# echo "DBG: saved ip is ${SAVEDIP4}"
52	+	else
53	+	# no existing ipv4 file, create one and add new ipv4 into it
54	+	/bin/echo -n "${IPREMOTE4}" > ${IPFILE4}
55	+	# echo "DBG: saved ip ${IPREMOTE4} to file ${IPFILE4}"
56	+	fi
57	+
58	+	#check for IP6
59	+	if [ -w "${IPFILE6}" -a -f "${IPFILE6}" ]
60	+	then
61	+	SAVEDIP6=$(cat ${IPFILE6})
62	+	# echo "DBG: saved ip is ${SAVEDIP4}"
63	+	else
64	+	# no existing ipv4 file, create one and add new ipv4 into it
65	+	/bin/echo -n "${IPREMOTE6}" > ${IPFILE6}
66	+	# echo "DBG: saved ip ${IPREMOTE4} to file ${IPFILE4}"
67	+	fi
68	+
69	+	# check if remote ip is identical as locally saved ip
70	+	if [ "${SAVEDIP4}x" = "${IPREMOTE4}x" ]
71	+	then
72	+	# if remote ip is equal as locally saved (old) ip
73	+	# echo "DBG: do nothing, ips are equal"
74	+	echo >&2 "IPv4 identical. Nothing to do"
75	+	else
76	+	# ips differ, update dns ip with remote ip and save into local ip file
77	+	curl -s -g -X POST -H "Authorization: Bearer ${AUTH_TOKEN}" \
78	+	-H "Content-Type: application/json" \
79	+	-d '{"records":[{"value":"'${IPREMOTE4}'","comment":"'${RR_COMMENT4}'"}]}' \
80	+	"${API_URL}${ZONE_ID}/rrsets/${RR_NAME}/${RR_TYPE4}/actions/set_records" > /dev/null
81	+	/bin/echo -n "${IPREMOTE4}" > ${IPFILE4}
82	+	fi
83	+
84	+	if [ "${CHECK}x" = "truex" ]
85	+	then
86	+	# finally check (output actual json record saved on dns server) remote ip
87	+	curl -s -H "Authorization: Bearer ${AUTH_TOKEN}" \
88	+	"${API_URL}${ZONE_ID}/rrsets/${RR_NAME}/${RR_TYPE4}" \| ${JQ} "[.[] \| .records]"
89	+	fi
90	+
91	+	# and repeat for ipv6
92	+	if [ "${SAVEDIP6}x" = "${IPREMOTE6}x" ]
93	+	then
94	+	# if remote ip is equal as locally saved (old) ip
95	+	# echo "DBG: do nothing, ips are equal"
96	+	echo >&2 "IPv6 identical. Nothing to do"
97	+	else
98	+	# ips differ, update dns ip with remote ip and save into local ip file
99	+	curl -s -g -X POST -H "Authorization: Bearer ${AUTH_TOKEN}" \
100	+	-H "Content-Type: application/json" \
101	+	-d '{"records":[{"value":"'${IPREMOTE6}'","comment":"'${RR_COMMENT6}'"}]}' \
102	+	"${API_URL}${ZONE_ID}/rrsets/${RR_NAME}/${RR_TYPE6}/actions/set_records" > /dev/null
103	+	/bin/echo -n "${IPREMOTE6}" > ${IPFILE6}
104	+	fi
105	+
106	+	if [ "${CHECK}x" = "truex" ]
107	+	then
108	+	# also check for ipv6
109	+	curl -s -H "Authorization: Bearer ${AUTH_TOKEN}" \
110	+	"${API_URL}${ZONE_ID}/rrsets/${RR_NAME}/${RR_TYPE6}" \| ${JQ} "[.[] \| .records]"
111	+	fi

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