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Merge pull request #1343 from dkerr64/Support-acme-v2-in-freedns

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Adding support for API v2 (multiple TXT records)
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neil 2018-03-10 08:59:20 +08:00 committed by GitHub
commit b8c94fc7cf
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1 changed files with 55 additions and 91 deletions
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146
dnsapi/dns_freedns.sh
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@ -53,8 +53,9 @@ dns_freedns_add() {
i="$(_math "$i" - 1)" i="$(_math "$i" - 1)"
sub_domain="$(echo "$fulldomain" | cut -d. -f -"$i")" sub_domain="$(echo "$fulldomain" | cut -d. -f -"$i")"
_debug top_domain "$top_domain" _debug "top_domain: $top_domain"
_debug sub_domain "$sub_domain" _debug "sub_domain: $sub_domain"
# Sometimes FreeDNS does not return the subdomain page but rather # Sometimes FreeDNS does not return the subdomain page but rather
# returns a page regarding becoming a premium member. This usually # returns a page regarding becoming a premium member. This usually
# happens after a period of inactivity. Immediately trying again # happens after a period of inactivity. Immediately trying again
@ -63,6 +64,7 @@ dns_freedns_add() {
attempts=2 attempts=2
while [ "$attempts" -gt "0" ]; do while [ "$attempts" -gt "0" ]; do
attempts="$(_math "$attempts" - 1)" attempts="$(_math "$attempts" - 1)"
htmlpage="$(_freedns_retrieve_subdomain_page "$FREEDNS_COOKIE")" htmlpage="$(_freedns_retrieve_subdomain_page "$FREEDNS_COOKIE")"
if [ "$?" != "0" ]; then if [ "$?" != "0" ]; then
if [ "$using_cached_cookies" = "true" ]; then if [ "$using_cached_cookies" = "true" ]; then
@ -71,10 +73,9 @@ dns_freedns_add() {
fi fi
return 1 return 1
fi fi
_debug2 htmlpage "$htmlpage"
subdomain_csv="$(echo "$htmlpage" | tr -d "\n\r" | _egrep_o '<form .*</form>' | sed 's/<tr>/@<tr>/g' | tr '@' '\n' | grep edit.php | grep "$top_domain")" subdomain_csv="$(echo "$htmlpage" | tr -d "\n\r" | _egrep_o '<form .*</form>' | sed 's/<tr>/@<tr>/g' | tr '@' '\n' | grep edit.php | grep "$top_domain")"
_debug2 subdomain_csv "$subdomain_csv" _debug3 "subdomain_csv: $subdomain_csv"
# The above beauty ends with striping out rows that do not have an # The above beauty ends with striping out rows that do not have an
# href to edit.php and do not have the top domain we are looking for. # href to edit.php and do not have the top domain we are looking for.
@ -85,55 +86,25 @@ dns_freedns_add() {
lines="$(echo "$subdomain_csv" | wc -l)" lines="$(echo "$subdomain_csv" | wc -l)"
i=0 i=0
found=0 found=0
DNSdomainid=""
while [ "$i" -lt "$lines" ]; do while [ "$i" -lt "$lines" ]; do
i="$(_math "$i" + 1)" i="$(_math "$i" + 1)"
line="$(echo "$subdomain_csv" | sed -n "${i}p")" line="$(echo "$subdomain_csv" | sed -n "${i}p")"
_debug2 line "$line" _debug2 "line: $line"
if [ $found = 0 ] && _contains "$line" "<td>$top_domain</td>"; then if [ $found = 0 ] && _contains "$line" "<td>$top_domain</td>"; then
# this line will contain DNSdomainid for the top_domain # this line will contain DNSdomainid for the top_domain
DNSdomainid="$(echo "$line" | _egrep_o "edit_domain_id *= *.*>" | cut -d = -f 2 | cut -d '>' -f 1)" DNSdomainid="$(echo "$line" | _egrep_o "edit_domain_id *= *.*>" | cut -d = -f 2 | cut -d '>' -f 1)"
_debug2 DNSdomainid "$DNSdomainid" _debug2 "DNSdomainid: $DNSdomainid"
found=1 found=1
else break
# lines contain DNS records for all subdomains
DNSname="$(echo "$line" | _egrep_o 'edit.php.*</a>' | cut -d '>' -f 2 | cut -d '<' -f 1)"
_debug2 DNSname "$DNSname"
DNStype="$(echo "$line" | sed 's/<td/@<td/g' | tr '@' '\n' | sed -n '4p' | cut -d '>' -f 2 | cut -d '<' -f 1)"
_debug2 DNStype "$DNStype"
if [ "$DNSname" = "$fulldomain" ] && [ "$DNStype" = "TXT" ]; then
DNSdataid="$(echo "$line" | _egrep_o 'data_id=.*' | cut -d = -f 2 | cut -d '>' -f 1)"
# 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 challenge subdomain.
DNSvalue="$(echo "$line" | sed 's/<td/@<td/g' | tr '@' '\n' | sed -n '5p' | cut -d '>' -f 2 | cut -d '<' -f 1)"
_debug2 DNSvalue "$DNSvalue"
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 fi
done done
_debug "DNSname: $DNSname DNStype: $DNStype DNSdomainid: $DNSdomainid DNSdataid: $DNSdataid"
_debug "DNSvalue: $DNSvalue"
if [ -z "$DNSdomainid" ]; then if [ -z "$DNSdomainid" ]; then
# If domain ID is empty then something went wrong (top level # If domain ID is empty then something went wrong (top level
# domain not found at FreeDNS). # domain not found at FreeDNS).
if [ "$attempts" = "0" ]; then if [ "$attempts" = "0" ]; then
# exhausted maximum retry attempts # exhausted maximum retry attempts
_debug "$htmlpage"
_debug "$subdomain_csv"
_err "Domain $top_domain not found at FreeDNS" _err "Domain $top_domain not found at FreeDNS"
return 1 return 1
fi fi
@ -145,33 +116,10 @@ dns_freedns_add() {
_info "Retry loading subdomain page ($attempts attempts remaining)" _info "Retry loading subdomain page ($attempts attempts remaining)"
done done
if [ -z "$DNSdataid" ]; then # Add in new TXT record with the value provided
# If data ID is empty then specific subdomain does not exist yet, need _debug "Adding TXT record for $fulldomain, $txtvalue"
# to create it this should always be the case as the acme client _freedns_add_txt_record "$FREEDNS_COOKIE" "$DNSdomainid" "$sub_domain" "$txtvalue"
# deletes the entry after domain is validated. return $?
_freedns_add_txt_record "$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 $fulldomain at FreeDNS"
return 0
else
# Delete the old TXT record (with the wrong value)
if _freedns_delete_txt_record "$FREEDNS_COOKIE" "$DNSdataid"; then
# And add in new TXT record with the value provided
_freedns_add_txt_record "$FREEDNS_COOKIE" "$DNSdomainid" "$sub_domain" "$txtvalue"
fi
return $?
fi
fi
return 0
} }
#Usage: fulldomain txtvalue #Usage: fulldomain txtvalue
@ -205,7 +153,7 @@ dns_freedns_rm() {
fi fi
subdomain_csv="$(echo "$htmlpage" | tr -d "\n\r" | _egrep_o '<form .*</form>' | sed 's/<tr>/@<tr>/g' | tr '@' '\n' | grep edit.php | grep "$fulldomain")" subdomain_csv="$(echo "$htmlpage" | tr -d "\n\r" | _egrep_o '<form .*</form>' | sed 's/<tr>/@<tr>/g' | tr '@' '\n' | grep edit.php | grep "$fulldomain")"
_debug2 subdomain_csv "$subdomain_csv" _debug3 "subdomain_csv: $subdomain_csv"
# The above beauty ends with striping out rows that do not have an # The above beauty ends with striping out rows that do not have an
# href to edit.php and do not have the domain name we are looking for. # href to edit.php and do not have the domain name we are looking for.
@ -216,35 +164,51 @@ dns_freedns_rm() {
lines="$(echo "$subdomain_csv" | wc -l)" lines="$(echo "$subdomain_csv" | wc -l)"
i=0 i=0
found=0 found=0
DNSdataid=""
while [ "$i" -lt "$lines" ]; do while [ "$i" -lt "$lines" ]; do
i="$(_math "$i" + 1)" i="$(_math "$i" + 1)"
line="$(echo "$subdomain_csv" | sed -n "${i}p")" line="$(echo "$subdomain_csv" | sed -n "${i}p")"
_debug2 line "$line" _debug3 "line: $line"
DNSname="$(echo "$line" | _egrep_o 'edit.php.*</a>' | cut -d '>' -f 2 | cut -d '<' -f 1)" DNSname="$(echo "$line" | _egrep_o 'edit.php.*</a>' | cut -d '>' -f 2 | cut -d '<' -f 1)"
_debug2 DNSname "$DNSname" _debug2 "DNSname: $DNSname"
DNStype="$(echo "$line" | sed 's/<td/@<td/g' | tr '@' '\n' | sed -n '4p' | cut -d '>' -f 2 | cut -d '<' -f 1)" if [ "$DNSname" = "$fulldomain" ]; then
_debug2 DNStype "$DNStype" DNStype="$(echo "$line" | sed 's/<td/@<td/g' | tr '@' '\n' | sed -n '4p' | cut -d '>' -f 2 | cut -d '<' -f 1)"
if [ "$DNSname" = "$fulldomain" ] && [ "$DNStype" = "TXT" ]; then _debug2 "DNStype: $DNStype"
DNSdataid="$(echo "$line" | _egrep_o 'data_id=.*' | cut -d = -f 2 | cut -d '>' -f 1)" if [ "$DNStype" = "TXT" ]; then
_debug2 DNSdataid "$DNSdataid" DNSdataid="$(echo "$line" | _egrep_o 'data_id=.*' | cut -d = -f 2 | cut -d '>' -f 1)"
DNSvalue="$(echo "$line" | sed 's/<td/@<td/g' | tr '@' '\n' | sed -n '5p' | cut -d '>' -f 2 | cut -d '<' -f 1)" _debug2 "DNSdataid: $DNSdataid"
_debug2 DNSvalue "$DNSvalue" DNSvalue="$(echo "$line" | sed 's/<td/@<td/g' | tr '@' '\n' | sed -n '5p' | cut -d '>' -f 2 | cut -d '<' -f 1)"
# if [ "$DNSvalue" = "$txtvalue" ]; then if _startswith "$DNSvalue" "&quot;"; then
# Testing value match fails. Website is truncating the value # remove the quotation from the start
# field. So for now we will assume that there is only one TXT DNSvalue="$(echo "$DNSvalue" | cut -c 7-)"
# field for the sub domain and just delete it. Currently this fi
# is a safe assumption. if _endswith "$DNSvalue" "..."; then
_freedns_delete_txt_record "$FREEDNS_COOKIE" "$DNSdataid" # value was truncated, remove the dot dot dot from the end
return $? DNSvalue="$(echo "$DNSvalue" | sed 's/...$//')"
# fi elif _endswith "$DNSvalue" "&quot;"; then
# else remove the closing quotation from the end
DNSvalue="$(echo "$DNSvalue" | sed 's/......$//')"
fi
_debug2 "DNSvalue: $DNSvalue"
if [ -n "$DNSdataid" ] && _startswith "$txtvalue" "$DNSvalue"; then
# Found a match. But note... Website is truncating the
# value field so we are only testing that part that is not
# truncated. This should be accurate enough.
_debug "Deleting TXT record for $fulldomain, $txtvalue"
_freedns_delete_txt_record "$FREEDNS_COOKIE" "$DNSdataid"
return $?
fi
fi
fi fi
done done
done done
# If we get this far we did not find a match (after two attempts) # If we get this far we did not find a match (after two attempts)
# Not necessarily an error, but log anyway. # Not necessarily an error, but log anyway.
_debug2 "$subdomain_csv" _debug3 "$subdomain_csv"
_info "Cannot delete TXT record for $fulldomain/$txtvalue. Does not exist at FreeDNS" _info "Cannot delete TXT record for $fulldomain, $txtvalue. Does not exist at FreeDNS"
return 0 return 0
} }
@ -272,7 +236,7 @@ _freedns_login() {
# if cookies is not empty then logon successful # if cookies is not empty then logon successful
if [ -z "$cookies" ]; then if [ -z "$cookies" ]; then
_debug "$htmlpage" _debug3 "htmlpage: $htmlpage"
_err "FreeDNS login failed for user $username. Check $HTTP_HEADER file" _err "FreeDNS login failed for user $username. Check $HTTP_HEADER file"
return 1 return 1
fi fi
@ -301,7 +265,7 @@ _freedns_retrieve_subdomain_page() {
return 1 return 1
fi fi
_debug2 "$htmlpage" _debug3 "htmlpage: $htmlpage"
printf "%s" "$htmlpage" printf "%s" "$htmlpage"
return 0 return 0
@ -323,17 +287,17 @@ _freedns_add_txt_record() {
_err "FreeDNS failed to add TXT record for $subdomain bad RC from _post" _err "FreeDNS failed to add TXT record for $subdomain bad RC from _post"
return 1 return 1
elif ! grep "200 OK" "$HTTP_HEADER" >/dev/null; then elif ! grep "200 OK" "$HTTP_HEADER" >/dev/null; then
_debug "$htmlpage" _debug3 "htmlpage: $htmlpage"
_err "FreeDNS failed to add TXT record for $subdomain. Check $HTTP_HEADER file" _err "FreeDNS failed to add TXT record for $subdomain. Check $HTTP_HEADER file"
return 1 return 1
elif _contains "$htmlpage" "security code was incorrect"; then elif _contains "$htmlpage" "security code was incorrect"; then
_debug "$htmlpage" _debug3 "htmlpage: $htmlpage"
_err "FreeDNS failed to add TXT record for $subdomain as FreeDNS requested security code" _err "FreeDNS failed to add TXT record for $subdomain as FreeDNS requested security code"
_err "Note that you cannot use automatic DNS validation for FreeDNS public domains" _err "Note that you cannot use automatic DNS validation for FreeDNS public domains"
return 1 return 1
fi fi
_debug2 "$htmlpage" _debug3 "htmlpage: $htmlpage"
_info "Added acme challenge TXT record for $fulldomain at FreeDNS" _info "Added acme challenge TXT record for $fulldomain at FreeDNS"
return 0 return 0
} }
@ -352,7 +316,7 @@ _freedns_delete_txt_record() {
_err "FreeDNS failed to delete TXT record for $data_id bad RC from _get" _err "FreeDNS failed to delete TXT record for $data_id bad RC from _get"
return 1 return 1
elif ! _contains "$htmlheader" "200 OK"; then elif ! _contains "$htmlheader" "200 OK"; then
_debug "$htmlheader" _debug2 "htmlheader: $htmlheader"
_err "FreeDNS failed to delete TXT record $data_id" _err "FreeDNS failed to delete TXT record $data_id"
return 1 return 1
fi fi