You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
375 lines
14 KiB
375 lines
14 KiB
#!/usr/bin/env sh |
|
|
|
#This file name is "dns_freedns.sh" |
|
#So, here must be a method dns_freedns_add() |
|
#Which will be called by acme.sh to add the txt record to your api system. |
|
#returns 0 means success, otherwise error. |
|
# |
|
#Author: David Kerr |
|
#Report Bugs here: https://github.com/dkerr64/acme.sh |
|
# |
|
######## Public functions ##################### |
|
|
|
# Export FreeDNS userid and password in folowing variables... |
|
# FREEDNS_User=username |
|
# FREEDNS_Password=password |
|
# login cookie is saved in acme account config file so userid / pw |
|
# need to be set only when changed. |
|
|
|
#Usage: dns_freedns_add _acme-challenge.www.domain.com "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs" |
|
dns_freedns_add() { |
|
fulldomain="$1" |
|
txtvalue="$2" |
|
|
|
_info "Add TXT record using FreeDNS" |
|
_debug "fulldomain: $fulldomain" |
|
_debug "txtvalue: $txtvalue" |
|
|
|
if [ -z "$FREEDNS_User" ] || [ -z "$FREEDNS_Password" ]; then |
|
FREEDNS_User="" |
|
FREEDNS_Password="" |
|
if [ -z "$FREEDNS_COOKIE" ]; then |
|
_err "You did not specify the FreeDNS username and password yet." |
|
_err "Please export as FREEDNS_User / FREEDNS_Password and try again." |
|
return 1 |
|
fi |
|
using_cached_cookies="true" |
|
else |
|
FREEDNS_COOKIE="$(_freedns_login "$FREEDNS_User" "$FREEDNS_Password")" |
|
if [ -z "$FREEDNS_COOKIE" ]; then |
|
return 1 |
|
fi |
|
using_cached_cookies="false" |
|
fi |
|
|
|
_debug "FreeDNS login cookies: $FREEDNS_COOKIE (cached = $using_cached_cookies)" |
|
|
|
_saveaccountconf FREEDNS_COOKIE "$FREEDNS_COOKIE" |
|
|
|
# split our full domain name into two parts... |
|
i="$(echo "$fulldomain" | tr '.' ' ' | wc -w)" |
|
i="$(_math "$i" - 1)" |
|
top_domain="$(echo "$fulldomain" | cut -d. -f "$i"-100)" |
|
i="$(_math "$i" - 1)" |
|
sub_domain="$(echo "$fulldomain" | cut -d. -f -"$i")" |
|
|
|
# Sometimes FreeDNS does not reurn the subdomain page but rather |
|
# returns a page regarding becoming a premium member. This usually |
|
# happens after a period of inactivity. Immediately trying again |
|
# returns the correct subdomain page. So, we will try twice to |
|
# load the page and obtain our domain ID |
|
attempts=2 |
|
while [ "$attempts" -gt "0" ]; do |
|
attempts="$(_math "$attempts" - 1)" |
|
|
|
htmlpage="$(_freedns_retrieve_subdomain_page "$FREEDNS_COOKIE")" |
|
if [ "$?" != "0" ]; then |
|
if [ "$using_cached_cookies" = "true" ]; then |
|
_err "Has your FreeDNS username and password channged? If so..." |
|
_err "Please export as FREEDNS_User / FREEDNS_Password and try again." |
|
fi |
|
return 1 |
|
fi |
|
|
|
# Now convert the tables in the HTML to CSV. This litte gem from |
|
# http://stackoverflow.com/questions/1403087/how-can-i-convert-an-html-table-to-csv |
|
subdomain_csv="$(echo "$htmlpage" \ |
|
| grep -i -e '</\?TABLE\|</\?TD\|</\?TR\|</\?TH' \ |
|
| sed 's/^[\ \t]*//g' \ |
|
| tr -d '\n' \ |
|
| sed 's/<\/TR[^>]*>/\n/Ig' \ |
|
| sed 's/<\/\?\(TABLE\|TR\)[^>]*>//Ig' \ |
|
| sed 's/^<T[DH][^>]*>\|<\/\?T[DH][^>]*>$//Ig' \ |
|
| sed 's/<\/T[DH][^>]*><T[DH][^>]*>/,/Ig' \ |
|
| grep 'edit.php?' \ |
|
| grep "$top_domain")" |
|
# The above beauty ends with striping out rows that do not have an |
|
# href to edit.php and do not have the top domain we are looking for. |
|
# So all we should be left with is CSV of table of subdomains we are |
|
# interested in. |
|
|
|
# Now we have to read through this table and extract the data we need |
|
lines="$(echo "$subdomain_csv" | wc -l)" |
|
nl=' |
|
' |
|
i=0 |
|
found=0 |
|
while [ "$i" -lt "$lines" ]; do |
|
i="$(_math "$i" + 1)" |
|
line="$(echo "$subdomain_csv" | cut -d "$nl" -f "$i")" |
|
tmp="$(echo "$line" | cut -d ',' -f 1)" |
|
if [ $found = 0 ] && _startswith "$tmp" "<td>$top_domain"; then |
|
# this line will contain DNSdomainid for the top_domain |
|
DNSdomainid="$(echo "$line" | cut -d ',' -f 2 | sed 's/^.*domain_id=//;s/>.*//')" |
|
found=1 |
|
else |
|
# lines contain DNS records for all subdomains |
|
DNSname="$(echo "$line" | cut -d ',' -f 2 | sed 's/^[^>]*>//;s/<\/a>.*//')" |
|
DNStype="$(echo "$line" | cut -d ',' -f 3)" |
|
if [ "$DNSname" = "$fulldomain" ] && [ "$DNStype" = "TXT" ]; then |
|
DNSdataid="$(echo "$line" | cut -d ',' -f 2 | sed 's/^.*data_id=//;s/>.*//')" |
|
# Now get current value for the TXT record. This method may |
|
# not produce accurate results as the value field is truncated |
|
# on this webpage. To get full value we would need to load |
|
# another page. However we don't really need this so long as |
|
# there is only one TXT record for the acme chalenge subdomain. |
|
DNSvalue="$(echo "$line" | cut -d ',' -f 4 | sed 's/^[^"]*"//;s/".*//;s/<\/td>.*//')" |
|
if [ $found != 0 ]; then |
|
break |
|
# we are breaking out of the loop at the first match of DNS name |
|
# and DNS type (if we are past finding the domainid). This assumes |
|
# that there is only ever one TXT record for the LetsEncrypt/acme |
|
# challenge subdomain. This seems to be a reasonable assumption |
|
# as the acme client deletes the TXT record on successful validation. |
|
fi |
|
else |
|
DNSname="" |
|
DNStype="" |
|
fi |
|
fi |
|
done |
|
|
|
_debug "DNSname: $DNSname DNStype: $DNStype DNSdomainid: $DNSdomainid DNSdataid: $DNSdataid" |
|
_debug "DNSvalue: $DNSvalue" |
|
|
|
if [ -z "$DNSdomainid" ]; then |
|
# If domain ID is empty then something went wrong (top level |
|
# domain not found at FreeDNS). |
|
if [ "$attempts" = "0" ]; then |
|
# exhausted maximum retry attempts |
|
_debug "$htmlpage" |
|
_debug "$subdomain_csv" |
|
_err "Domain $top_domain not found at FreeDNS" |
|
return 1 |
|
fi |
|
else |
|
# break out of the 'retry' loop... we have found our domain ID |
|
break |
|
fi |
|
_info "Domain $top_domain not found at FreeDNS" |
|
_info "Retry loading subdomain page ($attempts attempts remaining)" |
|
done |
|
|
|
if [ -z "$DNSdataid" ]; then |
|
# If data ID is empty then specific subdomain does not exist yet, need |
|
# to create it this should always be the case as the acme client |
|
# deletes the entry after domain is validated. |
|
_freedns_add_txt_record "$FREEDNS_COOKIE" "$DNSdomainid" "$sub_domain" "$txtvalue" |
|
return $? |
|
else |
|
if [ "$txtvalue" = "$DNSvalue" ]; then |
|
# if value in TXT record matches value requested then DNS record |
|
# does not need to be updated. But... |
|
# Testing value match fails. Website is truncating the value field. |
|
# So for now we will always go down the else path. Though in theory |
|
# should never come here anyway as the acme client deletes |
|
# the TXT record on successful validation, so we should not even |
|
# have found a TXT record !! |
|
_info "No update necessary for $fulldomain at FreeDNS" |
|
return 0 |
|
else |
|
# Delete the old TXT record (with the wrong value) |
|
_freedns_delete_txt_record "$FREEDNS_COOKIE" "$DNSdataid" |
|
if [ "$?" = "0" ]; then |
|
# And add in new TXT record with the value provided |
|
_freedns_add_txt_record "$FREEDNS_COOKIE" "$DNSdomainid" "$sub_domain" "$txtvalue" |
|
fi |
|
return $? |
|
fi |
|
fi |
|
return 0 |
|
} |
|
|
|
#Usage: fulldomain txtvalue |
|
#Remove the txt record after validation. |
|
dns_freedns_rm() { |
|
fulldomain="$1" |
|
txtvalue="$2" |
|
|
|
_info "Delete TXT record using FreeDNS" |
|
_debug "fulldomain: $fulldomain" |
|
_debug "txtvalue: $txtvalue" |
|
|
|
# Need to read cookie from conf file again in case new value set |
|
# during login to FreeDNS when TXT record was created. |
|
# acme.sh does not have a _readaccountconf() fuction |
|
FREEDNS_COOKIE="$(_read_conf "$ACCOUNT_CONF_PATH" "FREEDNS_COOKIE")" |
|
_debug "FreeDNS login cookies: $FREEDNS_COOKIE" |
|
|
|
# Sometimes FreeDNS does not reurn the subdomain page but rather |
|
# returns a page regarding becoming a premium member. This usually |
|
# happens after a period of inactivity. Immediately trying again |
|
# returns the correct subdomain page. So, we will try twice to |
|
# load the page and obtain our TXT record. |
|
attempts=2 |
|
while [ "$attempts" -gt "0" ]; do |
|
attempts="$(_math "$attempts" - 1)" |
|
|
|
htmlpage="$(_freedns_retrieve_subdomain_page "$FREEDNS_COOKIE")" |
|
if [ "$?" != "0" ]; then |
|
return 1 |
|
fi |
|
|
|
# Now convert the tables in the HTML to CSV. This litte gem from |
|
# http://stackoverflow.com/questions/1403087/how-can-i-convert-an-html-table-to-csv |
|
subdomain_csv="$(echo "$htmlpage" \ |
|
| grep -i -e '</\?TABLE\|</\?TD\|</\?TR\|</\?TH' \ |
|
| sed 's/^[\ \t]*//g' \ |
|
| tr -d '\n' \ |
|
| sed 's/<\/TR[^>]*>/\n/Ig' \ |
|
| sed 's/<\/\?\(TABLE\|TR\)[^>]*>//Ig' \ |
|
| sed 's/^<T[DH][^>]*>\|<\/\?T[DH][^>]*>$//Ig' \ |
|
| sed 's/<\/T[DH][^>]*><T[DH][^>]*>/,/Ig' \ |
|
| grep 'edit.php?' \ |
|
| grep "$fulldomain")" |
|
# The above beauty ends with striping out rows that do not have an |
|
# href to edit.php and do not have the domain name we are looking for. |
|
# So all we should be left with is CSV of table of subdomains we are |
|
# interested in. |
|
|
|
# Now we have to read through this table and extract the data we need |
|
lines="$(echo "$subdomain_csv" | wc -l)" |
|
nl=' |
|
' |
|
i=0 |
|
found=0 |
|
while [ "$i" -lt "$lines" ]; do |
|
i="$(_math "$i" + 1)" |
|
line="$(echo "$subdomain_csv" | cut -d "$nl" -f "$i")" |
|
DNSname="$(echo "$line" | cut -d ',' -f 2 | sed 's/^[^>]*>//;s/<\/a>.*//')" |
|
DNStype="$(echo "$line" | cut -d ',' -f 3)" |
|
if [ "$DNSname" = "$fulldomain" ] && [ "$DNStype" = "TXT" ]; then |
|
DNSdataid="$(echo "$line" | cut -d ',' -f 2 | sed 's/^.*data_id=//;s/>.*//')" |
|
DNSvalue="$(echo "$line" | cut -d ',' -f 4 | sed 's/^[^"]*"//;s/".*//;s/<\/td>.*//')" |
|
_debug "DNSvalue: $DNSvalue" |
|
# if [ "$DNSvalue" = "$txtvalue" ]; then |
|
# Testing value match fails. Website is truncating the value |
|
# field. So for now we will assume that there is only one TXT |
|
# field for the sub domain and just delete it. Currently this |
|
# is a safe assumption. |
|
_freedns_delete_txt_record "$FREEDNS_COOKIE" "$DNSdataid" |
|
return $? |
|
# fi |
|
fi |
|
done |
|
done |
|
|
|
# If we get this far we did not find a match (after two attempts) |
|
# Not necessarily an error, but log anyway. |
|
_debug2 "$subdomain_csv" |
|
_info "Cannot delete TXT record for $fulldomain/$txtvalue. Does not exist at FreeDNS" |
|
return 0 |
|
} |
|
|
|
#################### Private functions below ################################## |
|
|
|
# usage: _freedns_login username password |
|
# print string "cookie=value" etc. |
|
# returns 0 success |
|
_freedns_login() { |
|
export _H1="Accept-Language:en-US" |
|
username="$1" |
|
password="$2" |
|
url="https://freedns.afraid.org/zc.php?step=2" |
|
|
|
_debug "Login to FreeDNS as user $username" |
|
|
|
htmlpage="$(_post "username=$(printf '%s' "$username" | _url_encode)&password=$(printf '%s' "$password" | _url_encode)&submit=Login&action=auth" "$url")" |
|
|
|
if [ "$?" != "0" ]; then |
|
_err "FreeDNS login failed for user $username bad RC from _post" |
|
return 1 |
|
fi |
|
|
|
cookies="$(grep -i '^Set-Cookie.*dns_cookie.*$' "$HTTP_HEADER" | _head_n 1 | tr -d "\r\n" | cut -d " " -f 2)" |
|
|
|
# if cookies is not empty then logon successful |
|
if [ -z "$cookies" ]; then |
|
_debug "$htmlpage" |
|
_err "FreeDNS login failed for user $username. Check $HTTP_HEADER file" |
|
return 1 |
|
fi |
|
|
|
printf "%s" "$cookies" |
|
return 0 |
|
} |
|
|
|
# usage _freedns_retrieve_subdomain_page login_cookies |
|
# echo page retrieved (html) |
|
# returns 0 success |
|
_freedns_retrieve_subdomain_page() { |
|
export _H1="Cookie:$1" |
|
export _H2="Accept-Language:en-US" |
|
url="https://freedns.afraid.org/subdomain/" |
|
|
|
_debug "Retrieve subdmoain page from FreeDNS" |
|
|
|
htmlpage="$(_get "$url")" |
|
|
|
if [ "$?" != "0" ]; then |
|
_err "FreeDNS retrieve subdomins failed bad RC from _get" |
|
return 1 |
|
elif [ -z "$htmlpage" ]; then |
|
_err "FreeDNS returned empty subdomain page" |
|
return 1 |
|
fi |
|
|
|
_debug2 "$htmlpage" |
|
|
|
printf "%s" "$htmlpage" |
|
return 0 |
|
} |
|
|
|
# usage _freedns_add_txt_record login_cookies domain_id subdomain value |
|
# returns 0 success |
|
_freedns_add_txt_record() { |
|
export _H1="Cookie:$1" |
|
export _H2="Accept-Language:en-US" |
|
domain_id="$2" |
|
subdomain="$3" |
|
value="$(printf '%s' "$4" | _url_encode)" |
|
url="http://freedns.afraid.org/subdomain/save.php?step=2" |
|
|
|
htmlpage="$(_post "type=TXT&domain_id=$domain_id&subdomain=$subdomain&address=%22$value%22&send=Save%21" "$url")" |
|
|
|
if [ "$?" != "0" ]; then |
|
_err "FreeDNS failed to add TXT record for $subdomain bad RC from _post" |
|
return 1 |
|
elif ! grep "200 OK" "$HTTP_HEADER" >/dev/null; then |
|
_debug "$htmlpage" |
|
_err "FreeDNS failed to add TXT record for $subdomain. Check $HTTP_HEADER file" |
|
return 1 |
|
elif _contains "$htmlpage" "security code was incorrect"; then |
|
_debug "$htmlpage" |
|
_err "FreeDNS failed to add TXT record for $subdomain as FreeDNS requested seurity code" |
|
_err "Note that you cannot use automatic DNS validation for FreeDNS public domains" |
|
return 1 |
|
fi |
|
|
|
_debug2 "$htmlpage" |
|
_info "Added acme challenge TXT record for $fulldomain at FreeDNS" |
|
return 0 |
|
} |
|
|
|
# usage _freedns_delete_txt_record login_cookies data_id |
|
# returns 0 success |
|
_freedns_delete_txt_record() { |
|
export _H1="Cookie:$1" |
|
export _H2="Accept-Language:en-US" |
|
data_id="$2" |
|
url="https://freedns.afraid.org/subdomain/delete2.php" |
|
|
|
htmlheader="$(_get "$url?data_id%5B%5D=$data_id&submit=delete+selected" "onlyheader")" |
|
|
|
if [ "$?" != "0" ]; then |
|
_err "FreeDNS failed to delete TXT record for $data_id bad RC from _get" |
|
return 1 |
|
elif ! _contains "$htmlheader" "200 OK"; then |
|
_debug "$htmlheader" |
|
_err "FreeDNS failed to delete TXT record $data_id" |
|
return 1 |
|
fi |
|
|
|
_info "Deleted acme challenge TXT record for $fulldomain at FreeDNS" |
|
return 0 |
|
}
|
|
|