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404 lines
16 KiB
404 lines
16 KiB
#!/usr/bin/env sh
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## Name: dns_pleskxml.sh
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## Created by Stilez.
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## Also uses some code from PR#1832 by @romanlum (https://github.com/Neilpang/acme.sh/pull/1832/files)
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## This DNS-01 method uses the Plesk XML API described at:
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## https://docs.plesk.com/en-US/12.5/api-rpc/about-xml-api.28709
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## and more specifically: https://docs.plesk.com/en-US/12.5/api-rpc/reference.28784
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## Note: a DNS ID with host = empty string is OK for this API, see
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## https://docs.plesk.com/en-US/obsidian/api-rpc/about-xml-api/reference/managing-dns/managing-dns-records/adding-dns-record.34798
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## For example, to add a TXT record to DNS alias domain "acme-alias.com" would be a valid Plesk action.
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## So this API module can handle such a request, if needed.
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## For ACME v2 purposes, new TXT records are appended when added, and removing one TXT record will not affect any other TXT records.
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## The user credentials (username+password) and URL/URI for the Plesk XML API must be set by the user
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## before this module is called (case sensitive):
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##
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## ```
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## export pleskxml_uri="https://address-of-my-plesk-server.net:8443/enterprise/control/agent.php"
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## (or probably something similar)
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## export pleskxml_user="my plesk username"
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## export pleskxml_pass="my plesk password"
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## ```
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## Ok, let's issue a cert now:
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## ```
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## acme.sh --issue --dns dns_pleskxml -d example.com -d www.example.com
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## ```
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##
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## The `pleskxml_uri`, `pleskxml_user` and `pleskxml_pass` will be saved in `~/.acme.sh/account.conf` and reused when needed.
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#################### INTERNAL VARIABLES + NEWLINE + API TEMPLATES ##################################
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pleskxml_init_checks_done=0
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# Variable containing bare newline - not a style issue
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# shellcheck disable=SC1004
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NEWLINE='\
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'
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pleskxml_tplt_get_domains="<packet><customer><get-domain-list><filter/></get-domain-list></customer></packet>"
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# Get a list of domains that PLESK can manage, so we can check root domain + host for acme.sh
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# Also used to test credentials and URI.
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# No params.
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pleskxml_tplt_get_dns_records="<packet><dns><get_rec><filter><site-id>%s</site-id></filter></get_rec></dns></packet>"
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# Get all DNS records for a Plesk domain ID.
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# PARAM = Plesk domain id to query
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pleskxml_tplt_add_txt_record="<packet><dns><add_rec><site-id>%s</site-id><type>TXT</type><host>%s</host><value>%s</value></add_rec></dns></packet>"
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# Add a TXT record to a domain.
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# PARAMS = (1) Plesk internal domain ID, (2) "hostname" for the new record, eg '_acme_challenge', (3) TXT record value
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pleskxml_tplt_rmv_dns_record="<packet><dns><del_rec><filter><id>%s</id></filter></del_rec></dns></packet>"
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# Delete a specific TXT record from a domain.
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# PARAM = the Plesk internal ID for the DNS record to be deleted
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#################### Public functions ##################################
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#Usage: dns_pleskxml_add _acme-challenge.www.domain.com "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
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dns_pleskxml_add() {
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fulldomain=$1
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txtvalue=$2
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_info "Entering dns_pleskxml_add() to add TXT record '$txtvalue' to domain '$fulldomain'..."
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# Get credentials if not already checked, and confirm we can log in to Plesk XML API
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if ! _credential_check; then
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return 1
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fi
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# Get root and subdomain details, and Plesk domain ID
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if ! _pleskxml_get_root_domain "$fulldomain"; then
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return 1
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fi
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_debug 'Credentials OK, and domain identified. Calling Plesk XML API to add TXT record'
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# printf using template in a variable - not a style issue
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# shellcheck disable=SC2059
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request="$(printf "$pleskxml_tplt_add_txt_record" "$root_domain_id" "$sub_domain_name" "$txtvalue")"
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if ! _call_api "$request"; then
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return 1
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fi
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# OK, we should have added a TXT record. Let's check and return success if so.
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# All that should be left in the result, is one section, containing <result><status>ok</status><id>NEW_DNS_RECORD_ID</id></result>
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results="$(_api_response_split "$pleskxml_prettyprint_result" 'result' '<status>')"
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if ! _value "$results" | grep '<status>ok</status>' | grep '<id>[0-9]\{1,\}</id>' >/dev/null; then
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# Error - doesn't contain expected string. Something's wrong.
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_err 'Error when calling Plesk XML API.'
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_err 'The result did not contain the expected <id>XXXXX</id> section, or contained other values as well.'
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_err 'This is unexpected: something has gone wrong.'
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_err 'The full response was:\n' "$pleskxml_prettyprint_result"
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return 1
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fi
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recid="$(_value "$results" | grep '<id>[0-9]\{1,\}</id>' | sed -r 's/^.*<id>([0-9]+)<\/id>.*$/\1/')"
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_info "Success. TXT record appears to be correctly added (Plesk record ID=$recid). Exiting dns_pleskxml_add()."
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return 0
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}
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#Usage: dns_pleskxml_rm _acme-challenge.www.domain.com "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
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dns_pleskxml_rm() {
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fulldomain=$1
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txtvalue=$2
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_info "Entering dns_pleskxml_rm() to remove TXT record '$txtvalue' from domain '$fulldomain'..."
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# Get credentials if not already checked, and confirm we can log in to Plesk XML API
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if ! _credential_check; then
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return 1
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fi
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# Get root and subdomain details, and Plesk domain ID
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if ! _pleskxml_get_root_domain "$fulldomain"; then
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return 1
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fi
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_debug 'Credentials OK, and domain identified. Calling Plesk XML API to get list of TXT records and their IDs'
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# printf using template in a variable - not a style issue
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# shellcheck disable=SC2059
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request="$(printf "$pleskxml_tplt_get_dns_records" "$root_domain_id")"
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if ! _call_api "$request"; then
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return 1
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fi
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# Reduce output to one line per DNS record, filtered for TXT records with a record ID only (which they should all have)
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reclist="$(_api_response_split "$pleskxml_prettyprint_result" 'result' '<status>ok</status>' \
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| grep "<site-id>${root_domain_id}</site-id>" \
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| grep '<id>[0-9]\{1,\}</id>' \
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| grep '<type>TXT</type>'
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)"
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if [ -z "$reclist" ]; then
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_err "No TXT records found for root domain ${root_domain_name} (Plesk domain ID ${root_domain_id}). Exiting."
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return 1
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fi
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_debug "Got list of DNS TXT records for root domain '$root_domain_name'"':\n'"$reclist"
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recid="$(_value "$reclist" \
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| grep "<host>$1.</host>" \
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| grep "<value>$txtvalue</value>" \
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| sed -r 's/(^.*<id>|<\/id>.*$)//g'
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)"
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_debug "List of DNS TXT records for host:"'\n'"$(_value "$reclist" | grep "<host>$1.</host>")"
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if ! _value "$recid" | grep '^[0-9]\{1,\}$' >/dev/null; then
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_err "DNS records for root domain '${root_domain_name}' (Plesk ID ${root_domain_id}) + host '${sub_domain_name}' do not contain the TXT record '${txtvalue}'"
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_err "Cannot delete TXT record. Exiting."
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return 1
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fi
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_debug "Found Plesk record ID for target text string '${txtvalue}': ID=${recid}"
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_debug 'Calling Plesk XML API to remove TXT record'
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# printf using template in a variable - not a style issue
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# shellcheck disable=SC2059
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request="$(printf "$pleskxml_tplt_rmv_dns_record" "$recid")"
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if ! _call_api "$request"; then
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return 1
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fi
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# OK, we should have removed a TXT record. Let's check and return success if so.
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# All that should be left in the result, is one section, containing <result><status>ok</status><id>PLESK_DELETED_DNS_RECORD_ID</id></result>
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results="$(_api_response_split "$pleskxml_prettyprint_result" 'result' '<status>')"
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if ! _value "$results" | grep '<status>ok</status>' | grep '<id>[0-9]\{1,\}</id>' >/dev/null; then
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# Error - doesn't contain expected string. Something's wrong.
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_err 'Error when calling Plesk XML API.'
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_err 'The result did not contain the expected <id>XXXXX</id> section, or contained other values as well.'
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_err 'This is unexpected: something has gone wrong.'
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_err 'The full response was:\n' "$pleskxml_prettyprint_result"
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return 1
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fi
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_info "Success. TXT record appears to be correctly removed. Exiting dns_pleskxml_rm()."
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return 0
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}
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#################### Private functions below (utility functions) ##################################
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# Outputs value of a variable without additional newlines etc
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_value() {
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printf '%s' "$1"
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}
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# Outputs value of a variable (FQDN) and cuts it at 2 specified '.' delimiters, returning the text in between
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# $1, $2 = where to cut
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# $3 = FQDN
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_valuecut() {
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printf '%s' "$3" | cut -d . -f "${1}-${2}"
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}
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# Counts '.' present in a domain name
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# $1 = domain name
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_countdots() {
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_value "$1" | tr -dc '.' | wc -c
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}
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# Cleans up an API response, splits it "one line per item in the response" and greps for a string that in the context, identifies "useful" lines
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# $1 - result string from API
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# $2 - tag to resplit on (usually "result" or "domain")
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# $3 - basic regex to recognise useful return lines
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# note: $3 matches via basic NOT extended regex (BRE), as extended regex capabilities not needed at the moment.
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# Last line could change to <sed -rn '/.../p'> instead, with suitablew ewscaping of ['"/$],
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# if future Plesk XML API changes ever require extended regex
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_api_response_split() {
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printf '%s' "$1" \
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| sed -r 's/(^ +| +$)//g' \
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| tr -d '\n\r' \
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| sed -r "s/<\/?$2>/${NEWLINE}/g" \
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| grep "$3"
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}
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#################### Private functions below (DNS functions) ##################################
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# Calls Plesk XML API, and checks results for obvious issues
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_call_api() {
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request="$1"
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errtext=''
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_debug 'Entered _call_api(). Calling Plesk XML API with request:\n' "'${request}'"
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export _H1="HTTP_AUTH_LOGIN: $pleskxml_user"
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export _H2="HTTP_AUTH_PASSWD: $pleskxml_pass"
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export _H3="content-Type: text/xml"
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export _H4="HTTP_PRETTY_PRINT: true"
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pleskxml_prettyprint_result="$(_post "${request}" "$pleskxml_uri" "" "POST")"
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pleskxml_retcode="$?"
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_debug 'The responses from the Plesk XML server were:\n' "retcode=$pleskxml_retcode. Literal response:"'\n' "'$pleskxml_prettyprint_result'"
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# Detect any <status> that isn't "ok". None of the used calls should fail if the API is working correctly.
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# Also detect if there simply aren't any status lines (null result?) and report that, as well.
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statuslines_count_total="$(echo "$pleskxml_prettyprint_result" | grep -c '^ *<status>[^<]*</status> *$')"
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statuslines_count_okay="$(echo "$pleskxml_prettyprint_result" | grep -c '^ *<status>ok</status> *$')"
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if [ -z "$statuslines_count_total" ]; then
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# We have no status lines at all. Results are empty
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errtext='The Plesk XML API unexpectedly returned an empty set of results for this call.'
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elif [ "$statuslines_count_okay" -ne "$statuslines_count_total" ]; then
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# We have some status lines that aren't "ok". Any available details are in API response fields "status" "errcode" and "errtext"
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# Workaround for basic regex:
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# - filter output to keep only lines like this: "SPACES<TAG>text</TAG>SPACES" (shouldn't be necessary with prettyprint but guarantees subsequent code is ok)
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# - then edit the 3 "useful" error tokens individually and remove closing tags on all lines
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# - then filter again to remove all lines not edited (which will be the lines not starting A-Z)
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errtext="$(_value "$pleskxml_prettyprint_result" \
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| grep '^ *<[a-z]\{1,\}>[^<]*<\/[a-z]\{1,\}> *$' \
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| sed 's/^ *<status>/Status: /;s/^ *<errcode>/Error code: /;s/^ *<errtext>/Error text: /;s/<\/.*$//' \
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| grep '^[A-Z]'
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)"
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fi
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if [ "$pleskxml_retcode" -ne 0 ] || [ "$errtext" != "" ]; then
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# Call failed, for reasons either in the retcode or the response text...
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if [ "$pleskxml_retcode" -eq 0 ]; then
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_err "The POST request was successfully sent to the Plesk server."
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else
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_err "The return code for the POST request was $pleskxml_retcode (non-zero = failure in submitting request to server)."
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fi
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if [ "$errtext" != "" ]; then
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_err 'The error responses received from the Plesk server were:\n' "$errtext"
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else
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_err "No additional error messages were received back from the Plesk server"
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fi
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_err "The Plesk XML API call failed."
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return 1
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fi
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_debug "Leaving _call_api(). Successful call."
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return 0
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}
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# Startup checks (credentials, URI)
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_credential_check() {
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_debug "Checking Plesk XML API login credentials and URI..."
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if [ "$pleskxml_init_checks_done" -eq 1 ]; then
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_debug "Initial checks already done, no need to repeat. Skipped."
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return 0
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fi
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pleskxml_user="${pleskxml_user:-$(_readaccountconf_mutable pleskxml_user)}"
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pleskxml_pass="${pleskxml_pass:-$(_readaccountconf_mutable pleskxml_pass)}"
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pleskxml_uri="${pleskxml_uri:-$(_readaccountconf_mutable pleskxml_uri)}"
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if [ -z "$pleskxml_user" ] || [ -z "$pleskxml_pass" ] || [ -z "$pleskxml_uri" ]; then
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pleskxml_user=""
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pleskxml_pass=""
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pleskxml_uri=""
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_err "You didn't specify one or more of the Plesk XML API username, password, or URI."
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_err "Please create these and try again."
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_err "Instructions are in the 'dns_pleskxml' plugin source code or in the acme.sh documentation."
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return 1
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fi
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# Test the API is usable, by trying to read the list of managed domains...
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_call_api "$pleskxml_tplt_get_domains"
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if [ "$pleskxml_retcode" -ne 0 ]; then
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_err '\nFailed to access Plesk XML API.'
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_err "Please check your login credentials and Plesk URI, and that the URI is reachable, and try again."
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return 1
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fi
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_saveaccountconf_mutable pleskxml_uri "$pleskxml_uri"
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_saveaccountconf_mutable pleskxml_user "$pleskxml_user"
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_saveaccountconf_mutable pleskxml_pass "$pleskxml_pass"
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_debug "Test login to Plesk XML API successful. Login credentials and URI successfully saved to the acme.sh configuration file for future use."
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pleskxml_init_checks_done=1
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return 0
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}
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# For a FQDN, identify the root domain managed by Plesk, its domain ID in Plesk, and the host if any.
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# IMPORTANT NOTE: a result with host = empty string is OK for this API, see
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# https://docs.plesk.com/en-US/obsidian/api-rpc/about-xml-api/reference/managing-dns/managing-dns-records/adding-dns-record.34798
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# See notes at top of this file
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_pleskxml_get_root_domain() {
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_debug "Identifying DNS root domain for '$1' that is managed by the Plesk account."
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original_full_domain_name="$1"
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root_domain_name="$1"
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# test if the domain as provided is valid for splitting.
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if ! _countdots "$root_domain_name"; then
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_err "Invalid domain. The ACME domain must contain at least two parts (aa.bb) to identify a domain and tld for the TXT record."
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return 1
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fi
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_debug "Querying Plesk server for list of managed domains..."
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_call_api "$pleskxml_tplt_get_domains"
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if [ "$pleskxml_retcode" -ne 0 ]; then
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return 1
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fi
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# Generate a crude list of domains known to this Plesk account.
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# We convert <ascii-name> tags to <name> so it'll flag on a hit with either <name> or <ascii-name> fields,
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# for non-Western character sets.
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# Output will be one line per known domain, containing 2 <name> tages and a single <id> tag
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# We don't actually need to check for type, name, *and* id, but it guarantees only usable lines are returned.
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output="$(_api_response_split "$pleskxml_prettyprint_result" 'domain' '<type>domain</type>' | sed -r 's/<(\/?)ascii-name>/<\1name>/g' | grep '<name>' | grep '<id>')"
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_debug 'Domains managed by Plesk server are (ignore the hacked output):\n' "$output"
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# loop and test if domain, or any parent domain, is managed by Plesk
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# Loop until we don't have any '.' in the string we're testing as a candidate Plesk-managed domain
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while true; do
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_debug "Checking if '$root_domain_name' is managed by the Plesk server..."
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root_domain_id="$(_value "$output" | grep "<name>$root_domain_name</name>" | _head_n 1 | sed -r 's/^.*<id>([0-9]+)<\/id>.*$/\1/')"
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if [ -n "$root_domain_id" ]; then
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# Found a match
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# SEE IMPORTANT NOTE ABOVE - THIS FUNCTION CAN RETURN HOST='', AND THAT'S OK FOR PLESK XML API WHICH ALLOWS IT.
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# SO WE HANDLE IT AND DON'T PREVENT IT
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sub_domain_name="$(_value "$original_full_domain_name" | sed -r "s/\.?${root_domain_name}"'$//')"
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_info "Success. Matched host '$original_full_domain_name' to: DOMAIN '${root_domain_name}' (Plesk ID '${root_domain_id}'), HOST '${sub_domain_name}'. Returning."
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return 0
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fi
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# No match, try next parent up (if any)...
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root_domain_name="$(_valuecut 2 1000 "$root_domain_name")"
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if ! _countdots "$root_domain_name"; then
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_debug "No match, and next parent would be a TLD..."
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_err "Cannot find '$original_full_domain_name' or any parent domain of it, in Plesk."
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_err "Are you sure that this domain is managed by this Plesk server?"
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return 1
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fi
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_debug "No match, trying next parent up..."
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done
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}
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