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#!/usr/bin/env sh
# This script has been created at June 2020, based on knowledge base of wedos.com provider.
# It is intended to allow DNS-01 challenges for acme.sh using wedos's WAPI using XML.
# See WIKI page how to use it https://github.com/acmesh-official/acme.sh/wiki/dnsapi#117-use-wedos-dns-api
# Author Michal Tuma <mxtuma@gmail.com>
# For issues, please perform the action with --debug switch and report to https://github.com/acmesh-official/acme.sh/issues/3166
# MAIN WAPI ENDPOINT
WEDOS_WAPI_ENDPOINT="https://api.wedos.com/wapi/xml"
# WHEN SET TO ANYTHINK, THEN GENERATED XML WAPI REQUEST ADD TESTING SWITCH
TESTING_STAGE=
######## Public functions #####################
# Main implemented function for acme.sh.
# Function manages provided user informations, parse requested domain and subdomain name and create new TXT row with provided value.
# WEDOS WAPI Requests usage:
# - dns-domains-list : to retrieve a list of valid managed domains and check input $fulldomain
# - dns-row-add : to add new TXT row to a $fulldomain with $txtvalue set
# - dns-domain-commit : to commit added dns row
# Usage: add _acme-challenge.www.domain.com "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
dns_wedos_add() {
fulldomain=$1
txtvalue=$2
WEDOS_Username="${WEDOS_Username:-$(_readaccountconf_mutable WEDOS_Username)}"
WEDOS_Wapipass="${WEDOS_Wapipass:-$(_readaccountconf_mutable WEDOS_Wapipass)}"
WEDOS_Authtoken="${WEDOS_Authtoken:-$(_readaccountconf_mutable WEDOS_Authtoken)}"
if [ "${WEDOS_Authtoken}" ]; then
_debug "WEDOS Authtoken was already saved, using saved one"
_saveaccountconf_mutable WEDOS_Authtoken "${WEDOS_Authtoken}"
else
if [ -z "${WEDOS_Username}" ] || [ -z "${WEDOS_Wapipass}" ]; then
WEDOS_Username=""
WEDOS_Wapipass=""
_err "You didn't specify a WEDOS's username and wapi key yet."
_err "Please type: export WEDOS_Username=<your user name to login to wedos web account>"
_err "And: export WEDOS_Wapipass=<your WAPI passwords you setup using wedos web pages>"
_err "After you export those variables, run the script again, the values will be saved for future"
return 1
fi
#build WEDOS_Authtoken
_debug "WEDOS Authtoken were not saved yet, building"
WEDOS_Authtoken=$(printf '%s' "${WEDOS_Wapipass}" | _digest "sha1" "true" | head -c 40)
_debug "WEDOS_Authtoken step 1, WAPI PASS sha1 sum: '${WEDOS_Authtoken}'"
WEDOS_Authtoken="${WEDOS_Username}${WEDOS_Authtoken}"
_debug "WEDOS_Authtoken step 2, username concat with token without hours: '${WEDOS_Authtoken}'"
#save details
_saveaccountconf_mutable WEDOS_Username "${WEDOS_Username}"
_saveaccountconf_mutable WEDOS_Wapipass "${WEDOS_Wapipass}"
_saveaccountconf_mutable WEDOS_Authtoken "${WEDOS_Authtoken}"
fi
if ! _get_root "${fulldomain}"; then
_err "WEDOS Account do not contain primary domain to fullfill add of ${fulldomain}!"
return 1
fi
_debug _sub_domain "${_sub_domain}"
_debug _domain "${_domain}"
if _wapi_row_add "${_domain}" "${_sub_domain}" "${txtvalue}" "300"; then
_info "WEDOS WAPI: dns record added and dns changes were commited"
return 0
else
_err "FAILED TO ADD DNS RECORD OR COMMIT DNS CHANGES"
return 1
fi
}
# Main implemented function for acme.sh
# This function verify provided domain if is managed by stored account, try to find TXT row for the domain and removes it if it is found.
# WEDOS WAPI Requests used:
# - dns-domains-list : to verify requested $fulldomain is managed and to parse what is subdomain from it
# - dns-rows-list : to verify if provided $txtvalue exists as TXT entry
# - dns-row-delete : to request deletion of TXT value
# - dns-domain-commit : to commit deletion
# Usage: rm _acme_challenge.www.domain.org "e89fhwie73869yhe993e27d4hi"
dns_wedos_rm() {
fulldomain=$1
txtvalue=$2
WEDOS_Username="${WEDOS_Username:-$(_readaccountconf_mutable WEDOS_Username)}"
WEDOS_Wapipass="${WEDOS_Wapipass:-$(_readaccountconf_mutable WEDOS_Wapipass)}"
WEDOS_Authtoken="${WEDOS_Authtoken:-$(_readaccountconf_mutable WEDOS_Authtoken)}"
if [ "${WEDOS_Authtoken}" ]; then
_debug "WEDOS Authtoken was already saved, using saved one"
_saveaccountconf_mutable WEDOS_Authtoken "${WEDOS_Authtoken}"
else
if [ -z "${WEDOS_Username}" ] || [ -z "${WEDOS_Wapipass}" ]; then
WEDOS_Username=""
WEDOS_Wapipass=""
_err "You didn't specify a WEDOS's username and wapi key yet."
_err "Please type: export WEDOS_Username=<your user name to login to wedos web account>"
_err "And: export WEDOS_Wapipass=<your WAPI passwords you setup using wedos web pages>"
_err "After you export those variables, run the script again, the values will be saved for future"
return 1
fi
#build WEDOS_Authtoken
_debug "WEDOS Authtoken were not saved yet, building"
WEDOS_Authtoken=$(printf '%s' "${WEDOS_Wapipass}" | sha1sum | head -c 40)
_debug "WEDOS_Authtoken step 1, WAPI PASS sha1 sum: '${WEDOS_Authtoken}'"
WEDOS_Authtoken="${WEDOS_Username}${WEDOS_Authtoken}"
_debug "WEDOS_Authtoken step 2, username concat with token without hours: '${WEDOS_Authtoken}'"
#save details
_saveaccountconf_mutable WEDOS_Username "${WEDOS_Username}"
_saveaccountconf_mutable WEDOS_Wapipass "${WEDOS_Wapipass}"
_saveaccountconf_mutable WEDOS_Authtoken "${WEDOS_Authtoken}"
fi
if ! _get_root "${fulldomain}"; then
_err "WEDOS Account do not contain primary domain to fullfill add of ${fulldomain}!"
return 1
fi
_debug _sub_domain "${_sub_domain}"
_debug _domain "${_domain}"
if _wapi_find_row "${_domain}" "${_sub_domain}" "${txtvalue}"; then
_info "WEDOS WAPI: dns record found with id '${_row_id}'"
if _wapi_delete_row "${_domain}" "${_row_id}"; then
_info "WEDOS WAPI: dns row were deleted and changes commited!"
return 0
fi
fi
_err "Requested dns row were not found or was imposible to delete it, do it manually"
_err "Delete: ${fulldomain}"
_err "Value: ${txtvalue}"
return 1
}
#################### Private functions below ##################################
# Function _wapi_post(), only takes data, prepares auth token and provide result
# $1 - WAPI command string, like 'dns-domains-list'
# $2 - WAPI data for given command, is not required
# returns WAPI response if request were successfully delivered to WAPI endpoint
_wapi_post() {
command=$1
data=$2
_debug "Command : ${command}"
_debug "Data : ${data}"
if [ -z "${command}" ]; then
_err "No command were provided, implamantation error!"
return 1
fi
# Prepare authentification token
hour=$(TZ='Europe/Prague' date +%H)
token=$(printf '%s' "${WEDOS_Authtoken}${hour}" | _digest "sha1" "true" | head -c 40)
_debug "Authentification token is '${token}'"
# Build xml request
request="request=<?xml version=\"1.0\" encoding=\"UTF-8\"?>\
<request>\
<user>${WEDOS_Username}</user>\
<auth>${token}</auth>\
<command>${command}</command>"
if [ -z "${data}" ]; then
echo "" 1>/dev/null
else
request="${request}${data}"
fi
if [ -z "$TESTING_STAGE" ]; then
echo "" 1>/dev/null
else
request="${request}\
<test>1</test>"
fi
request="${request}\
</request>"
_debug "Request to WAPI is: ${request}"
if ! response="$(_post "${request}" "$WEDOS_WAPI_ENDPOINT")"; then
_err "Error contacting WEDOS WAPI with command ${command}"
return 1
fi
_debug "Response : ${response}"
_contains "${response}" "<code>1000</code>"
return "$?"
}
# _get_root() function, for provided full domain, like _acme_challenge.www.example.com verify if WEDOS contains a primary active domain and found what is subdomain
# $1 - full domain to verify, ie _acme_challenge.www.example.com
# builds ${_domain} found at WEDOS, like example.com and ${_sub_domain} from provided full domain, like _acme_challenge.www
_get_root() {
domain=$1
if [ -z "${domain}" ]; then
_err "Function _get_root was called without argument, implementation error!"
return 1
fi
_debug "Get root for domain: ${domain}"
_debug "Getting list of domains using WAPI ..."
if ! _wapi_post "dns-domains-list"; then
_err "Error on WAPI request for list of domains, response : ${response}"
return 1
else
_debug "DNS list were successfully retrieved, response : ${response}"
fi
# In for each cycle, try parse the response to find primary active domains
# - in order to success with MacOSX, always take care if all sed works with --posix when testing the all sed commmands
# For cycle description:
# 1st tr -d '\011\012\015' = remove all newlines and tab characters - whole XML became single line
# 2nd sed "s/^.*<data>[ ]*//g" = remove all the xml data from the beggining of the XML - XML now start with the content of <data> element
# 3rd sed "s/<\/data>.*$//g" = remove all the data after the data xml element - XML now contains only the content of data xml element
# 4th sed "s/>[ ]*<\([^\/]\)/><\1/g" = remove all spaces between XML tag and XML start tag - XML now contains content of data xml element and is without spaces between end and start xml tags
# 5th sed "s/<domain>//g" = remove all domain xml start tags - XML now contains only <name>...</name><type>...</type><status>...</status> </domain>(next xml domain)
# 6th sed "s/[ ]*<\/domain>/\t/g" = replace all "spaces</domain>" by tab - now we are preparing to create multiple lines
# 7th th '\011' '\n' = replace all tabs from previous sed (Mac OS change) - now we create multiple lines each should contain only <name>...</name><type>...</type><status>...</status>
# 8th sed -n "/<name>\([a-zA-Z0-9_.-][a-zA-Z0-9_.-]*\)<\/name><type>primary<\/type><status>active<\/status>/p" = remove all non primary or non active domains lines
# 9th sed "s/<name>\([a-zA-Z0-9_.-][a-zA-Z0-9_.-]*\)<\/name><type>primary<\/type><status>active<\/status>/\1/g" = substitute for domain names only
for xml_domain in $(echo "${response}" | tr -d '\011\012\015' | sed "s/^.*<data>[ ]*//g" | sed "s/<\/data>.*$//g" | sed "s/>[ ]*<\([^\/]\)/><\1/g" | sed "s/<domain>//g" | sed "s/[ ]*<\/domain>/\t/g" | tr '\011' '\n' | sed -n "/<name>\([a-zA-Z0-9_.-][a-zA-Z0-9_.-]*\)<\/name><type>primary<\/type><status>active<\/status>/p" | sed "s/<name>\([a-zA-Z0-9_.-][a-zA-Z0-9_.-]*\)<\/name><type>primary<\/type><status>active<\/status>/\1/g"); do
_debug "Found primary active domain: ${xml_domain}"
if _endswith "${domain}" "${xml_domain}"; then
length_difference=$(_math "${#domain} - ${#xml_domain}")
possible_subdomain=$(echo "${domain}" | cut -c -"${length_difference}")
if _endswith "${possible_subdomain}" "."; then
length_difference=$(_math "${length_difference} - 1")
_domain=${xml_domain}
_sub_domain=$(echo "${possible_subdomain}" | cut -c -"${length_difference}")
_info "Domain '${_domain}' was found at WEDOS account as primary, and subdomain is '${_sub_domain}'!"
return 0
fi
fi
_debug " ... found domain does not match required!"
done
return 1
}
# for provided domain, it commites all performed changes
_wapi_dns_commit() {
domain=$1
if [ -z "${domain}" ]; then
_err "Invalid request to commit dns changes, domain is empty, implementation error!"
return 1
fi
data=" <data>\
<name>${domain}</name>\
</data>"
if ! _wapi_post "dns-domain-commit" "${data}"; then
_err "Error on WAPI request to commit DNS changes, response : ${response}"
_err "PLEASE USE WEB ACCESS TO CHECK IF CHANGES ARE REQUIRED TO COMMIT OR ROLLBACKED IMMEDIATELLY!"
return 1
else
_debug "DNS CHANGES COMMITED, response : ${response}"
_info "WEDOS DNS WAPI: Changes were commited to domain '${domain}'"
fi
return 0
}
# add one TXT dns row to a specified fomain
_wapi_row_add() {
domain=$1
sub_domain=$2
value=$3
ttl=$4
if [ -z "${domain}" ] || [ -z "${sub_domain}" ] || [ -z "${value}" ] || [ -z "${ttl}" ]; then
_err "Invalid request to add record, domain: '${domain}', sub_domain: '${sub_domain}', value: '${value}' and ttl: '${ttl}', on of required input were not provided, implementation error!"
return 1
fi
# Prepare data for request to WAPI
data=" <data>\
<domain>${domain}</domain>\
<name>${sub_domain}</name>\
<ttl>${ttl}</ttl>\
<type>TXT</type>\
<rdata>${value}</rdata>\
<auth_comment>Created using WAPI from acme.sh</auth_comment>\
</data>"
_debug "Adding row using WAPI ..."
if ! _wapi_post "dns-row-add" "${data}"; then
_err "Error on WAPI request to add new TXT row, response : ${response}"
return 1
else
_debug "ROW ADDED, response : ${response}"
_info "WEDOS DNS WAPI: Row to domain '${domain}' with name '${sub_domain}' were successfully added with value '${value}' and ttl set to ${ttl}"
fi
# Now we have to commit
_wapi_dns_commit "${domain}"
return "$?"
}
_wapi_find_row() {
domain=$1
sub_domain=$2
value=$3
if [ -z "${domain}" ] || [ -z "${sub_domain}" ] || [ -z "${value}" ]; then
_err "Invalud request to finad a row, domain: '${domain}', sub_domain: '${sub_domain}' and value: '${value}', one of required input were not provided, implementation error!"
return 1
fi
data=" <data>\
<domain>${domain}</domain>\
</data>"
_debug "Searching rows using WAPI ..."
if ! _wapi_post "dns-rows-list" "${data}"; then
_err "Error on WAPI request to list domain rows, response : ${response}"
return 1
fi
_debug "Domain rows found, response : ${response}"
# Prepare sub domain regex which will be later used for search domain row
# from _acme_challenge.sub it should be _acme_challenge\.sub
sub_domain_regex=$(echo "${sub_domain}" | sed "s/\./\\\\./g")
_debug "Subdomain regex '${sub_domain_regex}'"
# In for each cycle loops over the domains rows, description:
# - when testing use sed --posix to test if compatible with MacOSX = avoid replacement to \n and using + as repeater one or more (instead use the same patern without repeater and then the same with *)
# 1st tr -d '\011\012\015' = delete all newlines and tab characters - XML became a single line
# 2nd sed "s/^.*<data>[ ]*//g" = remove all from the beggining to the start of the content of the data xml element - XML is without unusefull beginning
# 3rd sed "s/[ ]*<\/data>.*$//g" = remove the end of the xml starting with xml end tag data - XML contains only the content of data xml element and is trimmed
# 4th sed "s/>[ ]*<\([^\/]\)/><\1/g" = remove all spaces between XML tag and XML start tag - XML now contains content of data xml element and is without spaces between end and start xml tags
# 5th sed "s/<row>//g" = remove all row xml start tags - XML now contains rows xml element content and its end tag
# 6th sed "s/[ ]*<\/row>/\t/g" = replace all "spaces</row>" by tab - now we are preparing to create multiple lines
# 7th tr '\011' '\n' = replace all tabs with new lines (Mac OS X hint) - we create multiple lines each should contain only single row xml content
# 8th sed -n "/<name>${sub_domain_regex}<\/name>.*<rdtype>TXT<\/rdtype>/p" = remove all non TXT and non name matching row lines - now we have only xml lines with TXT rows matching requested values
# 9th sed "s/^<ID>\([0-9][0-9]*\)<\/ID>.*<rdata>\(.*\)<\/rdata>.*$/\1-\2/" = replace the whole lines to ID-value pairs
# -- now there are only lines with ID-value but value might contain spaces (BAD FOR FOREACH LOOP) or special characters (BAD FOR REGEX MATCHING)
# 10th grep "${value}" = match only a line containg searched value
# 11th sed "s/^\([0-9][0-9]*\).*$/\1/" = get only ID from the row
for xml_row in $(echo "${response}" | tr -d '\011\012\015' | sed "s/^.*<data>[ ]*//g" | sed "s/[ ]*<\/data>.*$//g" | sed "s/>[ ]*<\([^\/]\)/><\1/g" | sed "s/<row>//g" | sed "s/[ ]*<\/row>/\t/g" | tr '\011' '\n' | sed -n "/<name>${sub_domain_regex}<\/name>.*<rdtype>TXT<\/rdtype>/p" | sed "s/^<ID>\([0-9][0-9]*\)<\/ID>.*<rdata>\(.*\)<\/rdata>.*$/\1-\2/" | grep "${value}" | sed "s/^\([0-9][0-9]*\).*$/\1/"); do
_row_id="${xml_row}"
_info "WEDOS API: Found DNS row id ${_row_id} for domain ${domain}"
return 0
done
_info "WEDOS API: No TXT row found for domain '${domain}' with name '${sub_domain}' and value '${value}'"
return 1
}
_wapi_delete_row() {
domain=$1
row_id=$2
if [ -z "${domain}" ] || [ -z "${row_id}" ]; then
_err "Invalid request to delete domain dns row, domain: '${domain}' and row_id: '${row_id}', one of required input were not provided, implementation error!"
return 1
fi
data=" <data>\
<domain>${domain}</domain>
<row_id>${row_id}</row_id>
</data>"
_debug "Deleting dns row using WAPI ..."
if ! _wapi_post "dns-row-delete" "${data}"; then
_err "Error on WAPI request to delete dns row, response: ${response}"
return 1
fi
_debug "DNS row were deleted, response: ${response}"
_info "WEDOS API: Required dns domain row with row_id '${row_id}' were correctly deleted at domain '${domain}'"
# Now we have to commit changes
_wapi_dns_commit "${domain}"
return "$?"
}