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dnsapi/dns_miab.sh MIAB DNS-01 Validation
Know I'm new to contorting to this project. I i've broke conventions please let me know what I've screwed up and I'll set it right as quickly as possible. Propose this as a new DNS-01 validation script to dynamically add challenge DNS records to MailinaBox (MIAB) DNS. MIAB uses a custom DNS API to manage external DNS records. The script was originally written by Darven Dissek and can be found in his repository: https://framagit.org/DarvenDissek/acme.sh-MIAB-DNS-API/). This has been forked and some slight cleanup applied and change shebang to UNIx shell. The forked repository can be found here: https://github.com/billgertz/MIAB_dns_api. Wrote to Darven but received no reply. Support for this script has been submitted to the OPNsense project via this pull request: https://github.com/opnsense/plugins/pull/1531
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Bill Gertz
GitHub
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dnsapi/dns_miab.sh
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273
dnsapi/dns_miab.sh
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#!/usr/bin/env sh
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#Name: dns_miab.sh
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#
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#Authors:
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# Darven Dissek 2018
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# William Gertz 2019
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#
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# Thanks to Neil Pang for the code reused from acme.sh from HTTP-01 validation
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# used to communicate with the MailintheBox Custom DNS API
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#Report Bugs here:
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# https://github.com/billgertz/MIAB_dns_api (for dns_miab.sh)
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# https://github.com/Neilpang/acme.sh (for acme.sh)
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#
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######## Public functions #####################
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#Usage: dns_miab_add _acme-challenge.www.domain.com "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
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dns_miab_add() {
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fulldomain=$1
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txtvalue=$2
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_info "Using miab"
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_debug fulldomain "$fulldomain"
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_debug txtvalue "$txtvalue"
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MIAB_Username="${MIAB_Username:-$(_readaccountconf_mutable MIAB_Username)}"
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MIAB_Password="${MIAB_Password:-$(_readaccountconf_mutable MIAB_Password)}"
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MIAB_Server="${MIAB_Server:-$(_readaccountconf_mutable MIAB_Server)}"
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#debug log the environmental variables
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_debug MIAB_Username "$MIAB_Username"
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_debug MIAB_Password "$MIAB_Password"
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_debug MIAB_Server "$MIAB_Server"
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if [ -z "$MIAB_Username" ] || [ -z "$MIAB_Password" ] || [ -z "$MIAB_Server" ]; then
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MIAB_Username=""
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MIAB_Password=""
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MIAB_Server=""
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_err "You didn't specify MIAB_Username or MIAB_Password or MIAB_Server."
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_err "Please try again."
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return 1
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fi
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#save the credentials to the account conf file.
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_saveaccountconf_mutable MIAB_Username "$MIAB_Username"
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_saveaccountconf_mutable MIAB_Password "$MIAB_Password"
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_saveaccountconf_mutable MIAB_Server "$MIAB_Server"
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baseurl="https://$MIAB_Server/admin/dns/custom/$fulldomain/txt"
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#Add the challenge record
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result="$(_miab_post "$txtvalue" "$baseurl" "" "POST" "" "$MIAB_Username" "$MIAB_Password")"
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_debug result "$result"
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#check if result was good
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if _contains "$result" "updated DNS"; then
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_info "Successfully created the txt record"
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return 0
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else
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_err "Error encountered during record addition"
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_err "$result"
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return 1
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fi
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}
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#Usage: fulldomain txtvalue
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#Remove the txt record after validation.
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dns_miab_rm() {
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fulldomain=$1
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txtvalue=$2
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_info "Using miab"
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_debug fulldomain "$fulldomain"
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_debug txtvalue "$txtvalue"
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MIAB_Username="${MIAB_Username:-$(_readaccountconf_mutable MIAB_Username)}"
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MIAB_Password="${MIAB_Password:-$(_readaccountconf_mutable MIAB_Password)}"
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MIAB_Server="${MIAB_Server:-$(_readaccountconf_mutable MIAB_Server)}"
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#debug log the environmental variables
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_debug MIAB_Username "$MIAB_Username"
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_debug MIAB_Password "$MIAB_Password"
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_debug MIAB_Server "$MIAB_Server"
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if [ -z "$MIAB_Username" ] || [ -z "$MIAB_Password" ] || [ -z "$MIAB_Server" ]; then
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MIAB_Username=""
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MIAB_Password=""
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MIAB_Server=""
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_err "You didn't specify MIAB_Username or MIAB_Password or MIAB_Server."
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_err "Please try again."
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return 1
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fi
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#save the credentials to the account conf file.
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_saveaccountconf_mutable MIAB_Username "$MIAB_Username"
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_saveaccountconf_mutable MIAB_Password "$MIAB_Password"
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_saveaccountconf_mutable MIAB_Server "$MIAB_Server"
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baseurl="https://$MIAB_Server/admin/dns/custom/$fulldomain/txt"
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#Remove the challenge record
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result="$(_miab_post "$txtvalue" "$baseurl" "" "DELETE" "" "$MIAB_Username" "$MIAB_Password")"
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_debug result $result
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#check if result was good
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if _contains "$result" "updated DNS"; then
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_info "Successfully created the txt record"
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return 0
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else
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_err "Error encountered during record addition"
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_err "$result"
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return 1
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fi
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}
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#################### Private functions below ##################################
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#_acme-challenge.www.domain.com
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#returns
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# _sub_domain=_acme-challenge.www
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# _domain=domain.com
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# _domain_id=sdjkglgdfewsdfg
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_get_root() {
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domain=$1
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i=2
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p=1
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while true; do
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h=$(printf "%s" "$domain" | cut -d . -f $i-100)
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_debug h "$h"
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if [ -z "$h" ]; then
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#not valid
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return 1
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fi
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if _contains "$response" "\"name\":\"$h\"" >/dev/null; then
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_domain_id=$(printf "%s\n" "$response" | _egrep_o "\[.\"id\":\"[^\"]*\"" | head -n 1 | cut -d : -f 2 | tr -d \")
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if [ "$_domain_id" ]; then
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_sub_domain=$(printf "%s" "$domain" | cut -d . -f 1-$p)
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_domain=$h
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return 0
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fi
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return 1
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fi
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p=$i
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i=$(_math "$i" + 1)
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done
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return 1
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}
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# post changes to MIAB dns (taken from acme.sh)
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_miab_post() {
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body="$1"
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_post_url="$2"
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needbase64="$3"
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httpmethod="$4"
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_postContentType="$5"
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username="$6"
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password="$7"
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if [ -z "$httpmethod" ]; then
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httpmethod="POST"
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fi
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_debug $httpmethod
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_debug "_post_url" "$_post_url"
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_debug2 "body" "$body"
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_debug2 "_postContentType" "$_postContentType"
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_inithttp
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if [ "$_ACME_CURL" ] && [ "${ACME_USE_WGET:-0}" = "0" ]; then
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_CURL="$_ACME_CURL"
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if [ "$HTTPS_INSECURE" ]; then
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_CURL="$_CURL --insecure "
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fi
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_debug "_CURL" "$_CURL"
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if [ "$needbase64" ]; then
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if [ "$_postContentType" ]; then
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response="$($_CURL --user-agent "$USER_AGENT" -X $httpmethod --user "$username:$password" -H "Content-Type: $_postContentType" -H "$_H1" -H "$_H2" -H "$_H3" -H "$_H4" -H "$_H5" --data "$body" "$_post_url" | _base64)"
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else
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response="$($_CURL --user-agent "$USER_AGENT" -X $httpmethod --user "$username:$password" -H "$_H1" -H "$_H2" -H "$_H3" -H "$_H4" -H "$_H5" --data "$body" "$_post_url" | _base64)"
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fi
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else
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if [ "$_postContentType" ]; then
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response="$($_CURL --user-agent "$USER_AGENT" -X $httpmethod --user "$username:$password" -H "Content-Type: $_postContentType" -H "$_H1" -H "$_H2" -H "$_H3" -H "$_H4" -H "$_H5" --data "$body" "$_post_url")"
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else
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response="$($_CURL --user-agent "$USER_AGENT" -X $httpmethod --user "$username:$password" -H "$_H1" -H "$_H2" -H "$_H3" -H "$_H4" -H "$_H5" --data "$body" "$_post_url")"
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fi
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fi
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_ret="$?"
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if [ "$_ret" != "0" ]; then
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_err "Please refer to https://curl.haxx.se/libcurl/c/libcurl-errors.html for error code: $_ret"
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if [ "$DEBUG" ] && [ "$DEBUG" -ge "2" ]; then
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_err "Here is the curl dump log:"
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_err "$(cat "$_CURL_DUMP")"
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fi
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fi
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elif [ "$_ACME_WGET" ]; then
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_WGET="$_ACME_WGET"
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if [ "$HTTPS_INSECURE" ]; then
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_WGET="$_WGET --no-check-certificate "
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fi
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_debug "_WGET" "$_WGET"
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if [ "$needbase64" ]; then
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if [ "$httpmethod" = "POST" ]; then
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if [ "$_postContentType" ]; then
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response="$($_WGET -S -O - --user-agent="$USER_AGENT" --header "$_H5" --header "$_H4" --header "$_H3" --header "$_H2" --header "$_H1" --header "Content-Type: $_postContentType" --post-data="$body" "$_post_url" 2>"$HTTP_HEADER" | _base64)"
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else
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response="$($_WGET -S -O - --user-agent="$USER_AGENT" --header "$_H5" --header "$_H4" --header "$_H3" --header "$_H2" --header "$_H1" --post-data="$body" "$_post_url" 2>"$HTTP_HEADER" | _base64)"
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fi
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else
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if [ "$_postContentType" ]; then
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response="$($_WGET -S -O - --user-agent="$USER_AGENT" --header "$_H5" --header "$_H4" --header "$_H3" --header "$_H2" --header "$_H1" --header "Content-Type: $_postContentType" --method $httpmethod --body-data="$body" "$_post_url" 2>"$HTTP_HEADER" | _base64)"
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else
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response="$($_WGET -S -O - --user-agent="$USER_AGENT" --header "$_H5" --header "$_H4" --header "$_H3" --header "$_H2" --header "$_H1" --method $httpmethod --body-data="$body" "$_post_url" 2>"$HTTP_HEADER" | _base64)"
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fi
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fi
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else
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if [ "$httpmethod" = "POST" ]; then
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if [ "$_postContentType" ]; then
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response="$($_WGET -S -O - --user-agent="$USER_AGENT" --header "$_H5" --header "$_H4" --header "$_H3" --header "$_H2" --header "$_H1" --header "Content-Type: $_postContentType" --post-data="$body" "$_post_url" 2>"$HTTP_HEADER")"
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else
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response="$($_WGET -S -O - --user-agent="$USER_AGENT" --header "$_H5" --header "$_H4" --header "$_H3" --header "$_H2" --header "$_H1" --post-data="$body" "$_post_url" 2>"$HTTP_HEADER")"
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fi
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else
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if [ "$_postContentType" ]; then
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response="$($_WGET -S -O - --user-agent="$USER_AGENT" --header "$_H5" --header "$_H4" --header "$_H3" --header "$_H2" --header "$_H1" --header "Content-Type: $_postContentType" --method $httpmethod --body-data="$body" "$_post_url" 2>"$HTTP_HEADER")"
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else
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response="$($_WGET -S -O - --user-agent="$USER_AGENT" --header "$_H5" --header "$_H4" --header "$_H3" --header "$_H2" --header "$_H1" --method $httpmethod --body-data="$body" "$_post_url" 2>"$HTTP_HEADER")"
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fi
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fi
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fi
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_ret="$?"
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if [ "$_ret" = "8" ]; then
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_ret=0
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_debug "wget returns 8, the server returns a 'Bad request' response, lets process the response later."
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fi
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if [ "$_ret" != "0" ]; then
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_err "Please refer to https://www.gnu.org/software/wget/manual/html_node/Exit-Status.html for error code: $_ret"
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fi
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_sed_i "s/^ *//g" "$HTTP_HEADER"
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else
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_ret="$?"
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_err "Neither curl nor wget was found, cannot do $httpmethod."
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fi
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_debug "_ret" "$_ret"
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printf "%s" "$response"
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return $_ret
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}
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