mirror of
https://github.com/EV21/dynb.git
synced 2025-12-26 16:39:32 +01:00
fix: handle some curl exit codes
This commit is contained in:
130
dynb.sh
130
dynb.sh
@@ -57,14 +57,13 @@ _default_check_ip_servers=("ip64.ev21.de" "api64.ipify.org" "api.my-ip.io/ip" "i
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_ipv4_checker=
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_ipv6_checker=
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_DNS_checkServer=
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_new_IPv4=
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_new_IPv6=
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_remote_IPv4=
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_remote_IPv6=
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_dns_records=
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_main_domain=
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_is_IPv4_enabled=false
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_is_IPv6_enabled=false
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_interface_str=
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_status=
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_eventTime=0
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_errorCounter=0
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_response=
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@@ -366,12 +365,12 @@ function updateRecord
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if [[ ${ip_version} == 4 ]]
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then
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ID=$(getRecordID A)
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IP=$_new_IPv4
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IP=$_remote_IPv4
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fi
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if [[ ${ip_version} == 6 ]]
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then
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ID=$(getRecordID AAAA)
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IP=$_new_IPv6
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IP=$_remote_IPv6
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fi
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if [[ $IP != "" ]]
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then
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@@ -484,15 +483,15 @@ function prepare_ip_flag_parameters
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debugMessage "IPv4 enabled: $_is_IPv4_enabled; IPv6 enabled: $_is_IPv6_enabled; has remote IPv4: $_has_remote_ip4; has remote IPv6: $_has_remote_ip6"
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if [[ $_is_IPv4_enabled == true ]] && [[ $_is_IPv6_enabled == true ]] && [[ $_has_remote_ip4 == true ]] && [[ $_has_remote_ip6 == true ]]
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then
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ip_flag_parameters=("--data-urlencode" "${ipv4_parameter_name}=${_new_IPv4}" "--data-urlencode" "${ipv6_parameter_name}=${_new_IPv6}")
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ip_flag_parameters=("--data-urlencode" "${ipv4_parameter_name}=${_remote_IPv4}" "--data-urlencode" "${ipv6_parameter_name}=${_remote_IPv6}")
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fi
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if [[ $_is_IPv4_enabled == true ]] && [[ $_is_IPv6_enabled == false ]] || [[ $_is_IPv4_enabled == true ]] && [[ $_is_IPv6_enabled == true ]] && [[ $_has_remote_ip4 == true ]] && [[ $_has_remote_ip6 == false ]]
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then
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ip_flag_parameters=("--data-urlencode" "${ipv4_parameter_name}=${_new_IPv4}")
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ip_flag_parameters=("--data-urlencode" "${ipv4_parameter_name}=${_remote_IPv4}")
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fi
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if [[ $_is_IPv4_enabled == false ]] && [[ $_is_IPv6_enabled == true ]] || [[ $_is_IPv4_enabled == true ]] && [[ $_is_IPv6_enabled == true ]] && [[ $_has_remote_ip4 == false ]] && [[ $_has_remote_ip6 == true ]]
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then
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ip_flag_parameters=("--data-urlencode" "${ipv6_parameter_name}=${_new_IPv6}")
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ip_flag_parameters=("--data-urlencode" "${ipv6_parameter_name}=${_remote_IPv6}")
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fi
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}
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@@ -504,6 +503,7 @@ function send_request
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curl --silent "$_interface_str" \
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"${curl_parameters[@]}" \
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"${dyndns_update_url}")
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_curl_exit_code=$?
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analyse_response
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status_code=$?
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return $status_code
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@@ -582,7 +582,11 @@ function analyse_response
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return 1
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;;
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*)
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if [[ "$_response" == "$_status" ]]; then
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if test $_curl_exit_code -gt 0
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then
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analyse_curl_exit_code $_curl_exit_code
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return $?
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elif test -n "$_response" && [[ "$_response" == "$_previous_response_was" ]]; then
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errorMessage "An unknown response code has been received: $_response"
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return 1
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else
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@@ -593,6 +597,26 @@ function analyse_response
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esac
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}
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function analyse_curl_exit_code
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{
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local current_curl_exit_code=$1
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case $current_curl_exit_code in
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6)
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errorMessage "curl exit code: $_curl_exit_code; Couldn't resolve host: $dyndns_update_url"
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;;
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7)
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errorMessage "curl exit code: $_curl_exit_code; Failed to connect to host: $dyndns_update_url"
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;;
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22)
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errorMessage "curl exit code: $_curl_exit_code HTTP error code being 400 or above"
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;;
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*)
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errorMessage "curl exit code: $_curl_exit_code"
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;;
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esac
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return "$current_curl_exit_code"
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}
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# using DynDNS2 protocol
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function dynupdate
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{
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@@ -605,15 +629,25 @@ function dynupdate
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function setStatus
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{
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echo "_status=$1; _eventTime=$2; _errorCounter=$3; _statusHostname=$4; _statusUsername=$5; _statusPassword=$6" >/tmp/dynb.status
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echo "_curl_exit_code_was=$1; _previous_response_was=$2 _eventTime=$3; _errorCounter=$4; _statusHostname=$5; _statusUsername=$6; _statusPassword=$7" >/tmp/dynb.status
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}
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declare _previous_response_was
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declare _curl_exit_code_was
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# handle errors from past update requests
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function checkStatus
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{
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case $_status in
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local check_string
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if [[ -z "${_previous_response_was}" ]]
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then check_string=$_curl_exit_code_was
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else check_string=$_previous_response_was
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fi
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case $check_string in
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*nochg*)
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if [[ _errorCounter -gt 1 ]]; then
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if [[ _errorCounter -gt 1 ]]
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then
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errorMessage "The update client was spamming unnecessary update requests, something might be wrong with your IP-Check site."
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errorMessage "Fix your config and then delete $_statusFile or restart your docker container"
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return 1
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@@ -623,7 +657,7 @@ function checkStatus
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if [[ "$_statusHostname" == "$DYNB_DYN_DOMAIN" && ("$_statusUsername" == "$DYNB_USERNAME" || $_statusUsername == "$DYNB_TOKEN") ]]; then
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errorMessage "Hostname supplied does not exist under specified account, enter new login credentials before performing an additional request."
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return 1
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else rm "$_statusFile"
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else delete_status_file
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fi
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return 0
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;;
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@@ -631,7 +665,7 @@ function checkStatus
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if [[ "$_statusUsername" == "$DYNB_USERNAME" && ("$_statusPassword" == "$DYNB_PASSWORD" || $_statusPassword == "$DYNB_TOKEN") ]]; then
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errorMessage "Invalid username password combination."
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return 1
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else rm "$_statusFile"
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else delete_status_file
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fi
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return 0
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;;
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@@ -653,34 +687,59 @@ function checkStatus
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return 1
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;;
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servererror | 911 | 5* | *'Too Many Requests'*)
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delta=$(($(date +%s) - _eventTime))
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if [[ $delta -lt 1800 ]]
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if check_delay 30
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then
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errorMessage "$_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."
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return 1
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else rm "$_statusFile"
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fi
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delete_status_file
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return 0
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else
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errorMessage "$_previous_response_was: The provider currently has a fatal error."
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return 1
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fi
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;;
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*'Bad Request'*)
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if [[ "$_statusUsername" == "$DYNB_USERNAME" && ("$_statusPassword" == "$DYNB_PASSWORD" || $_statusPassword == "$DYNB_TOKEN") ]]; then
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if [[ "$_statusUsername" == "$DYNB_USERNAME" && ("$_statusPassword" == "$DYNB_PASSWORD" || $_statusPassword == "$DYNB_TOKEN") ]]
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then
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errorMessage "Bad Request: Please check your credentials, maybe your token is invalid."
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return 1
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else rm "$_statusFile"
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else delete_status_file
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fi
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return 0
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;;
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*)
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if [[ _errorCounter -gt 1 ]]
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if [[ $_errorCounter -gt 1 ]] && [[ "$_curl_exit_code_was" -eq 0 ]]
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then
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errorMessage "An unknown response code has repeatedly been received. $_response"
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return 1
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elif [[ $_errorCounter -gt 1 ]] && [[ "$_curl_exit_code_was" -eq 7 ]]
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then
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if check_delay 15
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then
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delete_status_file
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return 0
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else return 1
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fi
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else return 0
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fi
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;;
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esac
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}
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function check_delay
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{
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local minutes=$1
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local seconds=$(( minutes * 60 ))
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delta=$(($(date +%s) - _eventTime))
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if [[ $delta -lt $seconds ]]
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then
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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."
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if loopMode
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then sleep $seconds
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else return 1
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fi
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else return 0
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fi
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}
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# requires parameter
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# 1. param: 4 or 6 for IP version
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function ipHasChanged
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@@ -693,13 +752,13 @@ function ipHasChanged
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case ${ip_version} in
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4)
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getDNSIP A
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_new_IPv4=$_remote_ip
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debugMessage "IPv4 from remote IP check server: $_new_IPv4, IPv4 from DNS: $_dns_ip"
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_remote_IPv4=$_remote_ip
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debugMessage "IPv4 from remote IP check server: $_remote_IPv4, IPv4 from DNS: $_dns_ip"
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;;
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6)
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getDNSIP AAAA
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_new_IPv6=$_remote_ip
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debugMessage "IPv6 from remote IP check server: $_new_IPv6, IPv6 from DNS: $_dns_ip"
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_remote_IPv6=$_remote_ip
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debugMessage "IPv6 from remote IP check server: $_remote_IPv6, IPv6 from DNS: $_dns_ip"
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;;
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esac
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@@ -707,8 +766,8 @@ function ipHasChanged
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then return 1
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else
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case ${ip_version} in
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4) infoMessage "New IPv4: $_new_IPv4 old was: $_dns_ip";;
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6) infoMessage "New IPv6: $_new_IPv6 old was: $_dns_ip";;
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4) infoMessage "Remote IPv4: $_remote_IPv4 DNS IPv4: $_dns_ip";;
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6) infoMessage "Remote IPv6: $_remote_IPv6 DNS IPv6: $_dns_ip";;
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esac
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return 0
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fi
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@@ -838,8 +897,8 @@ function doUnsets
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unset _is_IPv4_enabled
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unset _is_IPv6_enabled
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unset _main_domain
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unset _new_IPv4
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unset _new_IPv6
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unset _remote_IPv4
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unset _remote_IPv6
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unset _version
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unset DYNB_DYN_DOMAIN
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unset DYNB_USERNAME
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@@ -880,6 +939,13 @@ function delete_status_file
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then
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debugMessage "Delete status file with previous errors"
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rm "$_statusFile"
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unset _curl_exit_code_was
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unset _previous_response_was
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unset _eventTime
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unset _errorCounter
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unset _statusHostname
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unset _statusUsername
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unset _statusPassword
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fi
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}
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@@ -904,7 +970,7 @@ function doDynDNS2Updates
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delete_status_file
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else
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debugMessage "Save new status after dynupdate has failed"
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setStatus "$_response" "$(date +%s)" $((_errorCounter += 1)) "$DYNB_DYN_DOMAIN" "${DYNB_USERNAME}" "${DYNB_PASSWORD}${DYNB_TOKEN}"
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setStatus "$_curl_exit_code" "$_response" "$(date +%s)" $((_errorCounter += 1)) "$DYNB_DYN_DOMAIN" "${DYNB_USERNAME}" "${DYNB_PASSWORD}${DYNB_TOKEN}"
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fi
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else debugMessage "Skip DynDNS2 update, checkStatus fetched previous error."
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fi
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