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ac9f6e3a41
This issue in the shell scripts will also be detected in the stable version of shfmt(we are currently using an ancient pre-release of shfmt)
372 lines
12 KiB
Bash
Executable File
372 lines
12 KiB
Bash
Executable File
#!/usr/bin/env sh
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#This file name is "dns_freedns.sh"
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#So, here must be a method dns_freedns_add()
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#Which will be called by acme.sh to add the txt record to your api system.
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#returns 0 means success, otherwise error.
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#
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#Author: David Kerr
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#Report Bugs here: https://github.com/dkerr64/acme.sh
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#or here... https://github.com/Neilpang/acme.sh/issues/2305
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#
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######## Public functions #####################
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# Export FreeDNS userid and password in following variables...
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# FREEDNS_User=username
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# FREEDNS_Password=password
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# login cookie is saved in acme account config file so userid / pw
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# need to be set only when changed.
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#Usage: dns_freedns_add _acme-challenge.www.domain.com "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
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dns_freedns_add() {
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fulldomain="$1"
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txtvalue="$2"
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_info "Add TXT record using FreeDNS"
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_debug "fulldomain: $fulldomain"
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_debug "txtvalue: $txtvalue"
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if [ -z "$FREEDNS_User" ] || [ -z "$FREEDNS_Password" ]; then
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FREEDNS_User=""
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FREEDNS_Password=""
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if [ -z "$FREEDNS_COOKIE" ]; then
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_err "You did not specify the FreeDNS username and password yet."
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_err "Please export as FREEDNS_User / FREEDNS_Password and try again."
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return 1
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fi
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using_cached_cookies="true"
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else
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FREEDNS_COOKIE="$(_freedns_login "$FREEDNS_User" "$FREEDNS_Password")"
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if [ -z "$FREEDNS_COOKIE" ]; then
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return 1
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fi
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using_cached_cookies="false"
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fi
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_debug "FreeDNS login cookies: $FREEDNS_COOKIE (cached = $using_cached_cookies)"
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_saveaccountconf FREEDNS_COOKIE "$FREEDNS_COOKIE"
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# We may have to cycle through the domain name to find the
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# TLD that we own...
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i=1
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wmax="$(echo "$fulldomain" | tr '.' ' ' | wc -w)"
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while [ "$i" -lt "$wmax" ]; do
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# split our full domain name into two parts...
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sub_domain="$(echo "$fulldomain" | cut -d. -f -"$i")"
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i="$(_math "$i" + 1)"
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top_domain="$(echo "$fulldomain" | cut -d. -f "$i"-100)"
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_debug "sub_domain: $sub_domain"
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_debug "top_domain: $top_domain"
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DNSdomainid="$(_freedns_domain_id "$top_domain")"
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if [ "$?" = "0" ]; then
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_info "Domain $top_domain found at FreeDNS, domain_id $DNSdomainid"
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break
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else
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_info "Domain $top_domain not found at FreeDNS, try with next level of TLD"
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fi
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done
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if [ -z "$DNSdomainid" ]; then
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# If domain ID is empty then something went wrong (top level
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# domain not found at FreeDNS).
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_err "Domain $top_domain not found at FreeDNS"
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return 1
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fi
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# Add in new TXT record with the value provided
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_debug "Adding TXT record for $fulldomain, $txtvalue"
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_freedns_add_txt_record "$FREEDNS_COOKIE" "$DNSdomainid" "$sub_domain" "$txtvalue"
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return $?
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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_freedns_rm() {
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fulldomain="$1"
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txtvalue="$2"
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_info "Delete TXT record using FreeDNS"
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_debug "fulldomain: $fulldomain"
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_debug "txtvalue: $txtvalue"
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# Need to read cookie from conf file again in case new value set
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# during login to FreeDNS when TXT record was created.
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FREEDNS_COOKIE="$(_readaccountconf "FREEDNS_COOKIE")"
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_debug "FreeDNS login cookies: $FREEDNS_COOKIE"
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TXTdataid="$(_freedns_data_id "$fulldomain" "TXT")"
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if [ "$?" != "0" ]; then
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_info "Cannot delete TXT record for $fulldomain, record does not exist at FreeDNS"
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return 1
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fi
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_debug "Data ID's found, $TXTdataid"
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# now we have one (or more) TXT record data ID's. Load the page
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# for that record and search for the record txt value. If match
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# then we can delete it.
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lines="$(echo "$TXTdataid" | wc -l)"
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_debug "Found $lines TXT data records for $fulldomain"
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i=0
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while [ "$i" -lt "$lines" ]; do
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i="$(_math "$i" + 1)"
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dataid="$(echo "$TXTdataid" | sed -n "${i}p")"
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_debug "$dataid"
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htmlpage="$(_freedns_retrieve_data_page "$FREEDNS_COOKIE" "$dataid")"
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if [ "$?" != "0" ]; then
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if [ "$using_cached_cookies" = "true" ]; then
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_err "Has your FreeDNS username and password changed? If so..."
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_err "Please export as FREEDNS_User / FREEDNS_Password and try again."
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fi
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return 1
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fi
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echo "$htmlpage" | grep "value=\""$txtvalue"\"" >/dev/null
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if [ "$?" = "0" ]; then
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# Found a match... delete the record and return
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_info "Deleting TXT record for $fulldomain, $txtvalue"
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_freedns_delete_txt_record "$FREEDNS_COOKIE" "$dataid"
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return $?
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fi
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done
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# If we get this far we did not find a match
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# Not necessarily an error, but log anyway.
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_info "Cannot delete TXT record for $fulldomain, $txtvalue. Does not exist at FreeDNS"
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return 0
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}
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#################### Private functions below ##################################
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# usage: _freedns_login username password
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# print string "cookie=value" etc.
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# returns 0 success
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_freedns_login() {
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export _H1="Accept-Language:en-US"
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username="$1"
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password="$2"
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url="https://freedns.afraid.org/zc.php?step=2"
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_debug "Login to FreeDNS as user $username"
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htmlpage="$(_post "username=$(printf '%s' "$username" | _url_encode)&password=$(printf '%s' "$password" | _url_encode)&submit=Login&action=auth" "$url")"
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if [ "$?" != "0" ]; then
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_err "FreeDNS login failed for user $username bad RC from _post"
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return 1
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fi
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cookies="$(grep -i '^Set-Cookie.*dns_cookie.*$' "$HTTP_HEADER" | _head_n 1 | tr -d "\r\n" | cut -d " " -f 2)"
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# if cookies is not empty then logon successful
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if [ -z "$cookies" ]; then
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_debug3 "htmlpage: $htmlpage"
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_err "FreeDNS login failed for user $username. Check $HTTP_HEADER file"
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return 1
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fi
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printf "%s" "$cookies"
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return 0
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}
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# usage _freedns_retrieve_subdomain_page login_cookies
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# echo page retrieved (html)
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# returns 0 success
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_freedns_retrieve_subdomain_page() {
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export _H1="Cookie:$1"
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export _H2="Accept-Language:en-US"
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url="https://freedns.afraid.org/subdomain/"
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_debug "Retrieve subdomain page from FreeDNS"
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htmlpage="$(_get "$url")"
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if [ "$?" != "0" ]; then
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_err "FreeDNS retrieve subdomains failed bad RC from _get"
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return 1
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elif [ -z "$htmlpage" ]; then
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_err "FreeDNS returned empty subdomain page"
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return 1
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fi
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_debug3 "htmlpage: $htmlpage"
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printf "%s" "$htmlpage"
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return 0
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}
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# usage _freedns_retrieve_data_page login_cookies data_id
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# echo page retrieved (html)
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# returns 0 success
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_freedns_retrieve_data_page() {
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export _H1="Cookie:$1"
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export _H2="Accept-Language:en-US"
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data_id="$2"
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url="https://freedns.afraid.org/subdomain/edit.php?data_id=$2"
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_debug "Retrieve data page for ID $data_id from FreeDNS"
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htmlpage="$(_get "$url")"
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if [ "$?" != "0" ]; then
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_err "FreeDNS retrieve data page failed bad RC from _get"
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return 1
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elif [ -z "$htmlpage" ]; then
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_err "FreeDNS returned empty data page"
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return 1
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fi
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_debug3 "htmlpage: $htmlpage"
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printf "%s" "$htmlpage"
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return 0
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}
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# usage _freedns_add_txt_record login_cookies domain_id subdomain value
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# returns 0 success
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_freedns_add_txt_record() {
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export _H1="Cookie:$1"
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export _H2="Accept-Language:en-US"
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domain_id="$2"
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subdomain="$3"
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value="$(printf '%s' "$4" | _url_encode)"
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url="https://freedns.afraid.org/subdomain/save.php?step=2"
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htmlpage="$(_post "type=TXT&domain_id=$domain_id&subdomain=$subdomain&address=%22$value%22&send=Save%21" "$url")"
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if [ "$?" != "0" ]; then
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_err "FreeDNS failed to add TXT record for $subdomain bad RC from _post"
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return 1
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elif ! grep "200 OK" "$HTTP_HEADER" >/dev/null; then
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_debug3 "htmlpage: $htmlpage"
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_err "FreeDNS failed to add TXT record for $subdomain. Check $HTTP_HEADER file"
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return 1
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elif _contains "$htmlpage" "security code was incorrect"; then
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_debug3 "htmlpage: $htmlpage"
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_err "FreeDNS failed to add TXT record for $subdomain as FreeDNS requested security code"
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_err "Note that you cannot use automatic DNS validation for FreeDNS public domains"
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return 1
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fi
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_debug3 "htmlpage: $htmlpage"
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_info "Added acme challenge TXT record for $fulldomain at FreeDNS"
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return 0
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}
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# usage _freedns_delete_txt_record login_cookies data_id
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# returns 0 success
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_freedns_delete_txt_record() {
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export _H1="Cookie:$1"
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export _H2="Accept-Language:en-US"
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data_id="$2"
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url="https://freedns.afraid.org/subdomain/delete2.php"
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htmlheader="$(_get "$url?data_id%5B%5D=$data_id&submit=delete+selected" "onlyheader")"
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if [ "$?" != "0" ]; then
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_err "FreeDNS failed to delete TXT record for $data_id bad RC from _get"
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return 1
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elif ! _contains "$htmlheader" "200 OK"; then
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_debug2 "htmlheader: $htmlheader"
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_err "FreeDNS failed to delete TXT record $data_id"
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return 1
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fi
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_info "Deleted acme challenge TXT record for $fulldomain at FreeDNS"
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return 0
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}
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# usage _freedns_domain_id domain_name
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# echo the domain_id if found
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# return 0 success
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_freedns_domain_id() {
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# Start by escaping the dots in the domain name
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search_domain="$(echo "$1" | sed 's/\./\\./g')"
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# Sometimes FreeDNS does not return the subdomain page but rather
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# returns a page regarding becoming a premium member. This usually
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# happens after a period of inactivity. Immediately trying again
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# returns the correct subdomain page. So, we will try twice to
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# load the page and obtain our domain ID
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attempts=2
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while [ "$attempts" -gt "0" ]; do
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attempts="$(_math "$attempts" - 1)"
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htmlpage="$(_freedns_retrieve_subdomain_page "$FREEDNS_COOKIE")"
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if [ "$?" != "0" ]; then
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if [ "$using_cached_cookies" = "true" ]; then
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_err "Has your FreeDNS username and password changed? If so..."
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_err "Please export as FREEDNS_User / FREEDNS_Password and try again."
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fi
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return 1
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fi
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domain_id="$(echo "$htmlpage" | tr -d "[:space:]" | sed 's/<tr>/@<tr>/g' | tr '@' '\n' \
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| grep "<td>$search_domain</td>\|<td>$search_domain(.*)</td>" \
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| _egrep_o "edit\.php\?edit_domain_id=[0-9a-zA-Z]+" \
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| cut -d = -f 2)"
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# The above beauty extracts domain ID from the html page...
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# strip out all blank space and new lines. Then insert newlines
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# before each table row <tr>
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# search for the domain within each row (which may or may not have
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# a text string in brackets (.*) after it.
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# And finally extract the domain ID.
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if [ -n "$domain_id" ]; then
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printf "%s" "$domain_id"
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return 0
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fi
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_debug "Domain $search_domain not found. Retry loading subdomain page ($attempts attempts remaining)"
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done
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_debug "Domain $search_domain not found after retry"
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return 1
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}
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# usage _freedns_data_id domain_name record_type
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# echo the data_id(s) if found
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# return 0 success
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_freedns_data_id() {
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# Start by escaping the dots in the domain name
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search_domain="$(echo "$1" | sed 's/\./\\./g')"
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record_type="$2"
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# Sometimes FreeDNS does not return the subdomain page but rather
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# returns a page regarding becoming a premium member. This usually
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# happens after a period of inactivity. Immediately trying again
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# returns the correct subdomain page. So, we will try twice to
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# load the page and obtain our domain ID
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attempts=2
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while [ "$attempts" -gt "0" ]; do
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attempts="$(_math "$attempts" - 1)"
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htmlpage="$(_freedns_retrieve_subdomain_page "$FREEDNS_COOKIE")"
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if [ "$?" != "0" ]; then
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if [ "$using_cached_cookies" = "true" ]; then
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_err "Has your FreeDNS username and password changed? If so..."
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_err "Please export as FREEDNS_User / FREEDNS_Password and try again."
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fi
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return 1
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fi
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data_id="$(echo "$htmlpage" | tr -d "[:space:]" | sed 's/<tr>/@<tr>/g' | tr '@' '\n' \
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| grep "<td[a-zA-Z=#]*>$record_type</td>" \
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| grep "<ahref.*>$search_domain</a>" \
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| _egrep_o "edit\.php\?data_id=[0-9a-zA-Z]+" \
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| cut -d = -f 2)"
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# The above beauty extracts data ID from the html page...
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# strip out all blank space and new lines. Then insert newlines
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# before each table row <tr>
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# search for the record type withing each row (e.g. TXT)
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# search for the domain within each row (which is within a <a..>
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# </a> anchor. And finally extract the domain ID.
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if [ -n "$data_id" ]; then
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printf "%s" "$data_id"
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return 0
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fi
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_debug "Domain $search_domain not found. Retry loading subdomain page ($attempts attempts remaining)"
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done
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_debug "Domain $search_domain not found after retry"
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return 1
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}
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