EV21/dynb
1
0
Fork 0
mirror of https://github.com/EV21/dynb.git synced 2025-12-26 08:29:34 +01:00
Code Issues Projects Releases Wiki Activity

fix: handle some curl exit codes

Browse Source
This commit is contained in:
Eduard Veit
2022-11-21 16:09:12 +01:00
parent 327e896754
commit 2ac50d326f
1 changed files with 97 additions and 31 deletions
Download Patch File Download Diff File Expand all files Collapse all files

128
dynb.sh
View File

@@ -57,14 +57,13 @@ _default_check_ip_servers=("ip64.ev21.de" "api64.ipify.org" "api.my-ip.io/ip" "i
_ipv4_checker=
_ipv6_checker=
_DNS_checkServer=
_new_IPv4=
_new_IPv6=
_remote_IPv4=
_remote_IPv6=
_dns_records=
_main_domain=
_is_IPv4_enabled=false
_is_IPv6_enabled=false
_interface_str=
_status=
_eventTime=0
_errorCounter=0
_response=
@@ -366,12 +365,12 @@ function updateRecord
if [[ ${ip_version} == 4 ]]
then
ID=$(getRecordID A)
IP=$_new_IPv4
IP=$_remote_IPv4
fi
if [[ ${ip_version} == 6 ]]
then
ID=$(getRecordID AAAA)
IP=$_new_IPv6
IP=$_remote_IPv6
fi
if [[ $IP != "" ]]
then
@@ -484,15 +483,15 @@ function prepare_ip_flag_parameters
debugMessage "IPv4 enabled: $_is_IPv4_enabled; IPv6 enabled: $_is_IPv6_enabled; has remote IPv4: $_has_remote_ip4; has remote IPv6: $_has_remote_ip6"
if [[ $_is_IPv4_enabled == true ]] && [[ $_is_IPv6_enabled == true ]] && [[ $_has_remote_ip4 == true ]] && [[ $_has_remote_ip6 == true ]]
then
ip_flag_parameters=("--data-urlencode" "${ipv4_parameter_name}=${_new_IPv4}" "--data-urlencode" "${ipv6_parameter_name}=${_new_IPv6}")
ip_flag_parameters=("--data-urlencode" "${ipv4_parameter_name}=${_remote_IPv4}" "--data-urlencode" "${ipv6_parameter_name}=${_remote_IPv6}")
fi
if [[ $_is_IPv4_enabled == true ]] && [[ $_is_IPv6_enabled == false ]] || [[ $_is_IPv4_enabled == true ]] && [[ $_is_IPv6_enabled == true ]] && [[ $_has_remote_ip4 == true ]] && [[ $_has_remote_ip6 == false ]]
then
ip_flag_parameters=("--data-urlencode" "${ipv4_parameter_name}=${_new_IPv4}")
ip_flag_parameters=("--data-urlencode" "${ipv4_parameter_name}=${_remote_IPv4}")
fi
if [[ $_is_IPv4_enabled == false ]] && [[ $_is_IPv6_enabled == true ]] || [[ $_is_IPv4_enabled == true ]] && [[ $_is_IPv6_enabled == true ]] && [[ $_has_remote_ip4 == false ]] && [[ $_has_remote_ip6 == true ]]
then
ip_flag_parameters=("--data-urlencode" "${ipv6_parameter_name}=${_new_IPv6}")
ip_flag_parameters=("--data-urlencode" "${ipv6_parameter_name}=${_remote_IPv6}")
fi
}
@@ -504,6 +503,7 @@ function send_request
curl --silent "$_interface_str" \
"${curl_parameters[@]}" \
"${dyndns_update_url}")
_curl_exit_code=$?
analyse_response
status_code=$?
return $status_code
@@ -582,7 +582,11 @@ function analyse_response
return 1
;;
*)
if [[ "$_response" == "$_status" ]]; then
if test $_curl_exit_code -gt 0
then
analyse_curl_exit_code $_curl_exit_code
return $?
elif test -n "$_response" && [[ "$_response" == "$_previous_response_was" ]]; then
errorMessage "An unknown response code has been received: $_response"
return 1
else
@@ -593,6 +597,26 @@ function analyse_response
esac
}
function analyse_curl_exit_code
{
local current_curl_exit_code=$1
case $current_curl_exit_code in
6)
errorMessage "curl exit code: $_curl_exit_code; Couldn't resolve host: $dyndns_update_url"
;;
7)
errorMessage "curl exit code: $_curl_exit_code; Failed to connect to host: $dyndns_update_url"
;;
22)
errorMessage "curl exit code: $_curl_exit_code HTTP error code being 400 or above"
;;
*)
errorMessage "curl exit code: $_curl_exit_code"
;;
esac
return "$current_curl_exit_code"
}
# using DynDNS2 protocol
function dynupdate
{
@@ -605,15 +629,25 @@ function dynupdate
function setStatus
{
echo "_status=$1; _eventTime=$2; _errorCounter=$3; _statusHostname=$4; _statusUsername=$5; _statusPassword=$6" >/tmp/dynb.status
echo "_curl_exit_code_was=$1; _previous_response_was=$2 _eventTime=$3; _errorCounter=$4; _statusHostname=$5; _statusUsername=$6; _statusPassword=$7" >/tmp/dynb.status
}
declare _previous_response_was
declare _curl_exit_code_was
# handle errors from past update requests
function checkStatus
{
case $_status in
local check_string
if [[ -z "${_previous_response_was}" ]]
then check_string=$_curl_exit_code_was
else check_string=$_previous_response_was
fi
case $check_string in
*nochg*)
if [[ _errorCounter -gt 1 ]]; then
if [[ _errorCounter -gt 1 ]]
then
errorMessage "The update client was spamming unnecessary update requests, something might be wrong with your IP-Check site."
errorMessage "Fix your config and then delete $_statusFile or restart your docker container"
return 1
@@ -623,7 +657,7 @@ function checkStatus
if [[ "$_statusHostname" == "$DYNB_DYN_DOMAIN" && ("$_statusUsername" == "$DYNB_USERNAME" || $_statusUsername == "$DYNB_TOKEN") ]]; then
errorMessage "Hostname supplied does not exist under specified account, enter new login credentials before performing an additional request."
return 1
else rm "$_statusFile"
else delete_status_file
fi
return 0
;;
@@ -631,7 +665,7 @@ function checkStatus
if [[ "$_statusUsername" == "$DYNB_USERNAME" && ("$_statusPassword" == "$DYNB_PASSWORD" || $_statusPassword == "$DYNB_TOKEN") ]]; then
errorMessage "Invalid username password combination."
return 1
else rm "$_statusFile"
else delete_status_file
fi
return 0
;;
@@ -653,34 +687,59 @@ function checkStatus
return 1
;;
servererror | 911 | 5* | *'Too Many Requests'*)
delta=$(($(date +%s) - _eventTime))
if [[ $delta -lt 1800 ]]
if check_delay 30
then
errorMessage "$_status: The provider currently has an fatal error. DynB will wait for next update until 30 minutes have passed since last request, $(date --date=@$delta -u +%M) minutes already passed."
delete_status_file
return 0
else
errorMessage "$_previous_response_was: The provider currently has a fatal error."
return 1
else rm "$_statusFile"
fi
return 0
;;
*'Bad Request'*)
if [[ "$_statusUsername" == "$DYNB_USERNAME" && ("$_statusPassword" == "$DYNB_PASSWORD" || $_statusPassword == "$DYNB_TOKEN") ]]; then
if [[ "$_statusUsername" == "$DYNB_USERNAME" && ("$_statusPassword" == "$DYNB_PASSWORD" || $_statusPassword == "$DYNB_TOKEN") ]]
then
errorMessage "Bad Request: Please check your credentials, maybe your token is invalid."
return 1
else rm "$_statusFile"
else delete_status_file
fi
return 0
;;
*)
if [[ _errorCounter -gt 1 ]]
if [[ $_errorCounter -gt 1 ]] && [[ "$_curl_exit_code_was" -eq 0 ]]
then
errorMessage "An unknown response code has repeatedly been received. $_response"
return 1
elif [[ $_errorCounter -gt 1 ]] && [[ "$_curl_exit_code_was" -eq 7 ]]
then
if check_delay 15
then
delete_status_file
return 0
else return 1
fi
else return 0
fi
;;
esac
}
function check_delay
{
local minutes=$1
local seconds=$(( minutes * 60 ))
delta=$(($(date +%s) - _eventTime))
if [[ $delta -lt $seconds ]]
then
errorMessage "DynB only executes an update when $minutes minutes have passed since the last failed request, $(date --date=@$delta -u +%M) minutes have already passed."
if loopMode
then sleep $seconds
else return 1
fi
else return 0
fi
}
# requires parameter
# 1. param: 4 or 6 for IP version
function ipHasChanged
@@ -693,13 +752,13 @@ function ipHasChanged
case ${ip_version} in
4)
getDNSIP A
_new_IPv4=$_remote_ip
debugMessage "IPv4 from remote IP check server: $_new_IPv4, IPv4 from DNS: $_dns_ip"
_remote_IPv4=$_remote_ip
debugMessage "IPv4 from remote IP check server: $_remote_IPv4, IPv4 from DNS: $_dns_ip"
;;
6)
getDNSIP AAAA
_new_IPv6=$_remote_ip
debugMessage "IPv6 from remote IP check server: $_new_IPv6, IPv6 from DNS: $_dns_ip"
_remote_IPv6=$_remote_ip
debugMessage "IPv6 from remote IP check server: $_remote_IPv6, IPv6 from DNS: $_dns_ip"
;;
esac
@@ -707,8 +766,8 @@ function ipHasChanged
then return 1
else
case ${ip_version} in
4) infoMessage "New IPv4: $_new_IPv4 old was: $_dns_ip";;
6) infoMessage "New IPv6: $_new_IPv6 old was: $_dns_ip";;
4) infoMessage "Remote IPv4: $_remote_IPv4 DNS IPv4: $_dns_ip";;
6) infoMessage "Remote IPv6: $_remote_IPv6 DNS IPv6: $_dns_ip";;
esac
return 0
fi
@@ -838,8 +897,8 @@ function doUnsets
unset _is_IPv4_enabled
unset _is_IPv6_enabled
unset _main_domain
unset _new_IPv4
unset _new_IPv6
unset _remote_IPv4
unset _remote_IPv6
unset _version
unset DYNB_DYN_DOMAIN
unset DYNB_USERNAME
@@ -880,6 +939,13 @@ function delete_status_file
then
debugMessage "Delete status file with previous errors"
rm "$_statusFile"
unset _curl_exit_code_was
unset _previous_response_was
unset _eventTime
unset _errorCounter
unset _statusHostname
unset _statusUsername
unset _statusPassword
fi
}
@@ -904,7 +970,7 @@ function doDynDNS2Updates
delete_status_file
else
debugMessage "Save new status after dynupdate has failed"
setStatus "$_response" "$(date +%s)" $((_errorCounter += 1)) "$DYNB_DYN_DOMAIN" "${DYNB_USERNAME}" "${DYNB_PASSWORD}${DYNB_TOKEN}"
setStatus "$_curl_exit_code" "$_response" "$(date +%s)" $((_errorCounter += 1)) "$DYNB_DYN_DOMAIN" "${DYNB_USERNAME}" "${DYNB_PASSWORD}${DYNB_TOKEN}"
fi
else debugMessage "Skip DynDNS2 update, checkStatus fetched previous error."
fi