294 lines
11 KiB
Bash
Executable File
294 lines
11 KiB
Bash
Executable File
#!/bin/bash
|
|
|
|
|
|
### Define functions
|
|
|
|
function scriptHelp {
|
|
echo -e "\e[1;39mUsage:"
|
|
echo -e "\e[1;36m$(basename ${0})" \
|
|
"\e[1;35m-f /path/to/account/details.file"
|
|
echo -e "\t\e[1;33m-r record.to.update [-r another.record.to.update -r ...]"
|
|
echo -e "\t\e[0;92m[optional parameters]\e[0m\n"
|
|
echo -e "\e[1;39mNotes:\e[0m"
|
|
echo -e "-f and -r parameters are REQUIRED."
|
|
echo -e "Multiple A/AAAA records to update can be specified by supplying"
|
|
echo -e "\tmultiple -r parameters (see examples below)."
|
|
echo "This script can operate only in either IP4 OR IP6 mode. See below."
|
|
echo "This script will NOT verify the format or validity of supplied IP"
|
|
echo -e "\taddresses."
|
|
echo -e "\n\e[1;39mOptional parameters\e[0m"
|
|
echo -e "-i\tUse this IP address when updating DNS records"
|
|
echo -e "\tIf NOT supplied, the script will attempt to auto-detect this"
|
|
echo -e "\tmachine's IP address (depending on -4 or -6 parameters) and"
|
|
echo -e "\tuse that address for DNS updates. The script does NOT check"
|
|
echo -e "\tthe validity of an address supplied using this parameter nor"
|
|
echo -e "\tthe protocol type (IP4 vs IP6)."
|
|
echo -e "-4\tOperate in IP4 mode and update A records (default)"
|
|
echo -e "\tThis is the default operating mode and does not need to be"
|
|
echo -e "\texplicitly specified. Ensure you have supplied a valid IP4"
|
|
echo -e "\taddress using the -i parameter or that your machine's IP4"
|
|
echo -e "\taddress can be correctly detected externally."
|
|
echo -e "-6\tOperate in IP6 mode and update AAAA records"
|
|
echo -e "\tONLY AAAA records will be updated. Ensure you have supplied"
|
|
echo -e "\ta valid IP6 address using the -i parameter or that your"
|
|
echo -e "\tmachine's IP6 address can be correctly detected externally."
|
|
echo -e "-h\tDisplay this help page"
|
|
echo -e "-x\tDisplay script examples"
|
|
echo -e "\n\e[1;39mExamples:"
|
|
echo -e "\e[0;39mRun \e[1;36m$(basename ${0}) \e[1;92m-x\e[0m\n"
|
|
echo -e "\n"
|
|
|
|
# exit with any error code used to call this help screen
|
|
quit none $1
|
|
}
|
|
|
|
|
|
function scriptExamples {
|
|
echo -e "\n\e[1;39m$(basename ${0}) Examples:\e[0m"
|
|
echo -e "\n\e[1;39mExample: \e[0mUse details from myCloudFlareDetails.info"
|
|
echo -e "file in /home/janedoe directory. Update server.mydomain.com A record"
|
|
echo -e "with this machine's auto-detected IP4 address."
|
|
echo -e "\t\e[1;36m$(basename ${0})" \
|
|
"\e[1;35m-f /home/janedoe/myCloudFlareDetails.info"
|
|
echo -e "\t\e[1;33m-r server.mydomain.com\e[0m"
|
|
echo -e "\n\e[1;39mExample: \e[0mUse details from myCloudFlareDetails.info"
|
|
echo -e "file in /home/janedoe directory. Update server.mydomain.com AND"
|
|
echo -e "server2.mydomain.com A records with this machine's auto-detected IP6"
|
|
echo -e "address."
|
|
echo -e "\t\e[1;36m$(basename ${0})" \
|
|
"\e[1;35m-f /home/janedoe/myCloudFlareDetails.info"
|
|
echo -e "\t\e[1;33m-r server.mydomain.com" \
|
|
"-r server2.mydomain.com \e[1;92m-6\e[0m"
|
|
echo -e "\n\e[1;39mExample: \e[0mUse details from myCloudFlareDetails.info"
|
|
echo -e "file in /home/janedoe directory. Update server.mydomain.com A record"
|
|
echo -e "using IP4 address 1.2.3.4."
|
|
echo -e "\t\e[1;36m$(basename ${0})" \
|
|
"\e[1;35m-f /home/janedoe/myCloudFlareDetails.info"
|
|
echo -e "\t\e[1;33m-r server.mydomain.com \e[1;92m-i 1.2.3.4\e[0m"
|
|
echo -e "\n\e[1;39mExample: \e[0mUse details from myCloudFlareDetails.info"
|
|
echo -e "file in /home/janedoe directory. Update server3.mydomain.com AND"
|
|
echo -e "server7.mydomain.com AAAA records using IP6 address FE80::286A:FF91."
|
|
echo -e "\t\e[1;36m$(basename ${0})" \
|
|
"\e[1;35m-f /home/janedoe/myCloudFlareDetails.info"
|
|
echo -e "\t\e[1;33m-r server.mydomain.com" \
|
|
"\e[1;33m-r server2.mydomain.com \e[1;92m-i FE80::286A:FF91\e[0m"
|
|
|
|
quit none
|
|
}
|
|
|
|
|
|
function quit {
|
|
if [ -z "$1" ]; then
|
|
# exit cleanly
|
|
echo -e "\e[1;32m--[SUCCESS] Script completed --\e[0m"
|
|
exit 0
|
|
elif [ "$1" = "none" ]; then
|
|
if [ -z "$2" ]; then
|
|
# exit cleanly
|
|
exit 0
|
|
else
|
|
# exit with error code but don't display it
|
|
exit "$2"
|
|
fi
|
|
else
|
|
# notify use that error has occurred and provide exit code
|
|
echo -e "\e[1;31m-- [ERROR] Script exited with code $1 --"
|
|
echo -e "\e[0;31m${errorExplain[$1]}\e[0m"
|
|
exit "$1"
|
|
fi
|
|
}
|
|
|
|
### end of functions
|
|
|
|
|
|
### unset environment variables used in this script and initialize arrays
|
|
unset PARAMS
|
|
unset accountFile
|
|
unset ipAddress
|
|
errorExplain=()
|
|
dnsRecords=()
|
|
cfDetails=()
|
|
cfRecords=()
|
|
currentIP=()
|
|
recordID=()
|
|
ip4=1
|
|
ip6=0
|
|
|
|
|
|
## define error code explainations
|
|
errorExplain[1]="Missing or invalid parameters on script invocation."
|
|
errorExplain[101]="Location of file with CloudFlare account details was NOT provided (-f parameter missing)."
|
|
errorExplain[102]="CloudFlare account details file is empty or does not exist"
|
|
errorExplain[103]="No DNS records to update were specified (-r parameter(s) missing)."
|
|
errorExplain[104]="There are no DNS records specified that match those found in your CloudFlare account to update."
|
|
errorExplain[201]="Could not detect this machine's IP address. Please re-run this script with the -i option."
|
|
errorExplain[254]="Could not connect with CloudFlare API. Please re-run this script later."
|
|
|
|
|
|
### Process script parameters
|
|
if [ -z $1 ]; then
|
|
echo -e "\e[1;31mNo parameter(s) provided\e[0m\n"
|
|
scriptHelp 1
|
|
fi
|
|
|
|
while getopts ':f:r:i:46hx' PARAMS; do
|
|
case "$PARAMS" in
|
|
f)
|
|
accountFile="${OPTARG}"
|
|
;;
|
|
r)
|
|
dnsRecords+=($OPTARG)
|
|
;;
|
|
i)
|
|
ipAddress="$OPTARG"
|
|
;;
|
|
4)
|
|
ip4=1
|
|
ip6=0
|
|
;;
|
|
6)
|
|
ip4=0
|
|
ip6=1
|
|
;;
|
|
h)
|
|
scriptHelp
|
|
;;
|
|
x)
|
|
scriptExamples
|
|
;;
|
|
?)
|
|
echo -e "\e[1;31mInvalid parameter(s) provided\e[0m\n"
|
|
scriptHelp 1
|
|
;;
|
|
esac
|
|
done
|
|
|
|
# Check validity of parameters
|
|
if [ -z "$accountFile" ] || [[ $accountFile == -* ]]; then
|
|
quit 101
|
|
elif [ ! -s "$accountFile" ]; then
|
|
quit 102
|
|
elif [ -z ${dnsRecords} ]; then
|
|
quit 103
|
|
fi
|
|
|
|
|
|
## Extract needed information from accountDetails file
|
|
mapfile -t cfDetails < "$accountFile"
|
|
|
|
## Get current IP address, if not provided in parameters
|
|
if [ -z "$ipAddress" ]; then
|
|
echo -e "\e[0;36mNo IP address for update provided. Detecting" \
|
|
"this machine's IP address..."
|
|
if [ $ip4 -eq 1 ]; then
|
|
echo -e "\e[1;36m(set to IP4 mode)\e[0m"
|
|
ipAddress=$(curl -s http://ipv4.icanhazip.com)
|
|
elif [ $ip6 -eq 1 ]; then
|
|
echo -e "\e[1;36m(set to IP6 mode)\e[0m"
|
|
ipAddress=$(curl -s http://ipv6.icanhazip.com)
|
|
fi
|
|
ipLookupResult=$(echo "$?")
|
|
if [ "$ipLookupResult" -ne 0 ]; then
|
|
quit 201
|
|
else
|
|
echo -e "\e[0;36mUsing IP address: $ipAddress"
|
|
fi
|
|
fi
|
|
|
|
|
|
## Check if desired record(s) exist at CloudFlare
|
|
echo -e "\e[0;36mPerforming CloudFlare lookup on specified DNS records...\e[0m"
|
|
# perform checks on A or AAAA records based on invocation options
|
|
if [ $ip4 -eq 1 ]; then
|
|
echo -e "\t(IP4: ${dnsRecords[*]})"
|
|
for cfLookup in "${dnsRecords[@]}"; do
|
|
cfRecords+=("$(curl -s -X GET "https://api.cloudflare.com/client/v4/zones/${cfDetails[2]}/dns_records?name=$cfLookup&type=A" -H "X-Auth-Email: ${cfDetails[0]}" -H "X-Auth-Key: ${cfDetails[1]}" -H "Content-Type: application/json")")
|
|
done
|
|
elif [ $ip6 -eq 1 ]; then
|
|
echo -e "\t(IP6: ${dnsRecords[*]})"
|
|
for cfLookup in "${dnsRecords[@]}"; do
|
|
cfRecords+=("$(curl -s -X GET "https://api.cloudflare.com/client/v4/zones/${cfDetails[2]}/dns_records?name=$cfLookup&type=AAAA" -H "X-Auth-Email: ${cfDetails[0]}" -H "X-Auth-Key: ${cfDetails[1]}" -H "Content-Type: application/json")")
|
|
done
|
|
fi
|
|
# check for curl errors
|
|
cfLookupResult=$(echo "$?")
|
|
if [ "$cfLookupResult" -ne 0 ]; then
|
|
quit 254
|
|
fi
|
|
# check for any non-existant domain names and remove from array
|
|
for recordIdx in "${!cfRecords[@]}"; do
|
|
if [[ ${cfRecords[recordIdx]} == *"\"count\":0"* ]]; then
|
|
# inform user that domain not found in CloudFlare DNS records
|
|
echo -e "\e[0;31m***${dnsRecords[recordIdx]} not found in your" \
|
|
"CloudFlare DNS records***\e[0m"
|
|
# remove the entry from the dnsRecords array
|
|
unset dnsRecords[$recordIdx]
|
|
# remove the entry from the records array
|
|
unset cfRecords[$recordIdx]
|
|
fi
|
|
done
|
|
# contract the dnsRecords and cfRecords arrays to re-order them after any
|
|
# deleted records
|
|
dnsRecords=("${dnsRecords[@]}")
|
|
cfRecords=("${cfRecords[@]}")
|
|
|
|
# after trimming errant records, it's possible dnsRecords array is empty
|
|
# check for this condition and exit (nothing to do), otherwise list arrays
|
|
if [ -z ${dnsRecords} ]; then
|
|
quit 104
|
|
else
|
|
for recordIdx in "${!cfRecords[@]}"; do
|
|
echo -e "\n\e[0;33mFound ${dnsRecords[recordIdx]}" \
|
|
"(Index: $recordIdx):\e[0m"
|
|
echo -e "${cfRecords[recordIdx]}"
|
|
done
|
|
fi
|
|
|
|
|
|
## Get existing IP address and identifier in CloudFlare's DNS records
|
|
for recordIdx in "${!cfRecords[@]}"; do
|
|
currentIP+=($(echo "${cfRecords[recordIdx]}" | \
|
|
grep -Po '(?<="content":")[^"]*'))
|
|
recordID+=($(echo "${cfRecords[recordIdx]}" | \
|
|
grep -Po '(?<="id":")[^"]*'))
|
|
echo -e "\e[1;36mIndex $recordIdx: \e[0mFor record\e[1;33m" \
|
|
"${dnsRecords[recordIdx]}\e[0m" \
|
|
"with ID: \e[1;33m${recordID[recordIdx]}\e[0m" \
|
|
"the current IP is \e[1;35m ${currentIP[recordIdx]}\e[0m"
|
|
done
|
|
|
|
## Check whether new IP matches old IP and update if they do not match
|
|
for recordIdx in "${!currentIP[@]}"; do
|
|
if [ ${currentIP[recordIdx]} = $ipAddress ]; then
|
|
echo -e "\e[0;32m${dnsRecords[recordIdx]} is up-to-date.\e[0m"
|
|
else
|
|
echo -e "\e[0;31m${dnsRecords[recordIdx]} needs updating...\e[0m"
|
|
if [ $ip4 -eq 1 ]; then
|
|
# update record at CloudFlare with new IP
|
|
update=$(curl -s -X PUT "https://api.cloudflare.com/client/v4/zones/${cfDetails[2]}/dns_records/${recordID[recordIdx]}" -H "X-Auth-Email: ${cfDetails[0]}" -H "X-Auth-Key: ${cfDetails[1]}" -H "Content-Type: application/json" --data "{\"id\":\"${cfDetails[2]}\",\"type\":\"A\",\"proxied\":false,\"name\":\"${dnsRecords[recordIdx]}\",\"content\":\"$ipAddress\"}")
|
|
# check for success code from CloudFlare
|
|
if [[ $update == *"\"success\":true"* ]]; then
|
|
echo -e "\e[1;32m${dnsRecords[recordIdx]} updated.\e[0m]"
|
|
else
|
|
echo -e "\e[1;31m${dnsRecords[recordIdx]} update failed\e[0m"
|
|
fi
|
|
elif [ $ip6 -eq 1 ]; then
|
|
# update record at CloudFlare with new IP
|
|
update=$(curl -s -X PUT "https://api.cloudflare.com/client/v4/zones/${cfDetails[2]}/dns_records/${recordID[recordIdx]}" -H "X-Auth-Email: ${cfDetails[0]}" -H "X-Auth-Key: ${cfDetails[1]}" -H "Content-Type: application/json" --data "{\"id\":\"${cfDetails[2]}\",\"type\":\"AAAA\",\"proxied\":false,\"name\":\"${dnsRecords[recordIdx]}\",\"content\":\"$ipAddress\"}")
|
|
# check for success code from CloudFlare
|
|
if [[ $update == *"\"success\":true"* ]]; then
|
|
echo -e "\e[1;32m${dnsRecords[recordIdx]} updated.\e[0m"
|
|
else
|
|
echo -e "\e[1;31m${dnsRecords[recordIdx]} update failed\e[0m"
|
|
fi
|
|
fi
|
|
fi
|
|
done
|
|
|
|
|
|
|
|
quit
|
|
|
|
# this code should never be executed
|
|
exit 99
|