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@ -53,8 +53,9 @@ dns_freedns_add() { |
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i="$(_math "$i" - 1)" |
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sub_domain="$(echo "$fulldomain" | cut -d. -f -"$i")" |
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_debug top_domain "$top_domain" |
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_debug sub_domain "$sub_domain" |
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_debug "top_domain: $top_domain" |
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_debug "sub_domain: $sub_domain" |
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# Sometimes FreeDNS does not return the subdomain page but rather |
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# returns a page regarding becoming a premium member. This usually |
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# happens after a period of inactivity. Immediately trying again |
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@ -63,6 +64,7 @@ dns_freedns_add() { |
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attempts=2 |
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while [ "$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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@ -71,10 +73,9 @@ dns_freedns_add() { |
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fi |
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return 1 |
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fi |
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_debug2 htmlpage "$htmlpage" |
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subdomain_csv="$(echo "$htmlpage" | tr -d "\n\r" | _egrep_o '<form .*</form>' | sed 's/<tr>/@<tr>/g' | tr '@' '\n' | grep edit.php | grep "$top_domain")" |
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_debug2 subdomain_csv "$subdomain_csv" |
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_debug3 "subdomain_csv: $subdomain_csv" |
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# The above beauty ends with striping out rows that do not have an |
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# href to edit.php and do not have the top domain we are looking for. |
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@ -85,55 +86,25 @@ dns_freedns_add() { |
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lines="$(echo "$subdomain_csv" | wc -l)" |
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i=0 |
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found=0 |
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DNSdomainid="" |
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while [ "$i" -lt "$lines" ]; do |
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i="$(_math "$i" + 1)" |
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line="$(echo "$subdomain_csv" | sed -n "${i}p")" |
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_debug2 line "$line" |
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_debug2 "line: $line" |
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if [ $found = 0 ] && _contains "$line" "<td>$top_domain</td>"; then |
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# this line will contain DNSdomainid for the top_domain |
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DNSdomainid="$(echo "$line" | _egrep_o "edit_domain_id *= *.*>" | cut -d = -f 2 | cut -d '>' -f 1)" |
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_debug2 DNSdomainid "$DNSdomainid" |
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_debug2 "DNSdomainid: $DNSdomainid" |
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found=1 |
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else |
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# lines contain DNS records for all subdomains |
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DNSname="$(echo "$line" | _egrep_o 'edit.php.*</a>' | cut -d '>' -f 2 | cut -d '<' -f 1)" |
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_debug2 DNSname "$DNSname" |
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DNStype="$(echo "$line" | sed 's/<td/@<td/g' | tr '@' '\n' | sed -n '4p' | cut -d '>' -f 2 | cut -d '<' -f 1)" |
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_debug2 DNStype "$DNStype" |
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if [ "$DNSname" = "$fulldomain" ] && [ "$DNStype" = "TXT" ]; then |
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DNSdataid="$(echo "$line" | _egrep_o 'data_id=.*' | cut -d = -f 2 | cut -d '>' -f 1)" |
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# Now get current value for the TXT record. This method may |
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# not produce accurate results as the value field is truncated |
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# on this webpage. To get full value we would need to load |
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# another page. However we don't really need this so long as |
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# there is only one TXT record for the acme challenge subdomain. |
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DNSvalue="$(echo "$line" | sed 's/<td/@<td/g' | tr '@' '\n' | sed -n '5p' | cut -d '>' -f 2 | cut -d '<' -f 1)" |
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_debug2 DNSvalue "$DNSvalue" |
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if [ $found != 0 ]; then |
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break |
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# we are breaking out of the loop at the first match of DNS name |
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# and DNS type (if we are past finding the domainid). This assumes |
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# that there is only ever one TXT record for the LetsEncrypt/acme |
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# challenge subdomain. This seems to be a reasonable assumption |
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# as the acme client deletes the TXT record on successful validation. |
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fi |
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else |
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DNSname="" |
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DNStype="" |
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fi |
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fi |
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done |
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_debug "DNSname: $DNSname DNStype: $DNStype DNSdomainid: $DNSdomainid DNSdataid: $DNSdataid" |
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_debug "DNSvalue: $DNSvalue" |
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if [ -z "$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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if [ "$attempts" = "0" ]; then |
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# exhausted maximum retry attempts |
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_debug "$htmlpage" |
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_debug "$subdomain_csv" |
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_err "Domain $top_domain not found at FreeDNS" |
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return 1 |
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fi |
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@ -145,33 +116,10 @@ dns_freedns_add() { |
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_info "Retry loading subdomain page ($attempts attempts remaining)" |
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done |
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if [ -z "$DNSdataid" ]; then |
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# If data ID is empty then specific subdomain does not exist yet, need |
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# to create it this should always be the case as the acme client |
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# deletes the entry after domain is validated. |
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_freedns_add_txt_record "$FREEDNS_COOKIE" "$DNSdomainid" "$sub_domain" "$txtvalue" |
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return $? |
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else |
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if [ "$txtvalue" = "$DNSvalue" ]; then |
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# if value in TXT record matches value requested then DNS record |
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# does not need to be updated. But... |
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# Testing value match fails. Website is truncating the value field. |
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# So for now we will always go down the else path. Though in theory |
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# should never come here anyway as the acme client deletes |
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# the TXT record on successful validation, so we should not even |
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# have found a TXT record !! |
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_info "No update necessary for $fulldomain at FreeDNS" |
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return 0 |
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else |
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# Delete the old TXT record (with the wrong value) |
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if _freedns_delete_txt_record "$FREEDNS_COOKIE" "$DNSdataid"; then |
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# And add in new TXT record with the value provided |
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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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fi |
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return $? |
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fi |
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fi |
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return 0 |
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} |
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#Usage: fulldomain txtvalue |
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@ -205,7 +153,7 @@ dns_freedns_rm() { |
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fi |
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subdomain_csv="$(echo "$htmlpage" | tr -d "\n\r" | _egrep_o '<form .*</form>' | sed 's/<tr>/@<tr>/g' | tr '@' '\n' | grep edit.php | grep "$fulldomain")" |
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_debug2 subdomain_csv "$subdomain_csv" |
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_debug3 "subdomain_csv: $subdomain_csv" |
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# The above beauty ends with striping out rows that do not have an |
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# href to edit.php and do not have the domain name we are looking for. |
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@ -216,35 +164,51 @@ dns_freedns_rm() { |
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lines="$(echo "$subdomain_csv" | wc -l)" |
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i=0 |
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found=0 |
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DNSdataid="" |
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while [ "$i" -lt "$lines" ]; do |
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i="$(_math "$i" + 1)" |
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line="$(echo "$subdomain_csv" | sed -n "${i}p")" |
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_debug2 line "$line" |
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_debug3 "line: $line" |
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DNSname="$(echo "$line" | _egrep_o 'edit.php.*</a>' | cut -d '>' -f 2 | cut -d '<' -f 1)" |
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_debug2 DNSname "$DNSname" |
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_debug2 "DNSname: $DNSname" |
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if [ "$DNSname" = "$fulldomain" ]; then |
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DNStype="$(echo "$line" | sed 's/<td/@<td/g' | tr '@' '\n' | sed -n '4p' | cut -d '>' -f 2 | cut -d '<' -f 1)" |
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_debug2 DNStype "$DNStype" |
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if [ "$DNSname" = "$fulldomain" ] && [ "$DNStype" = "TXT" ]; then |
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_debug2 "DNStype: $DNStype" |
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if [ "$DNStype" = "TXT" ]; then |
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DNSdataid="$(echo "$line" | _egrep_o 'data_id=.*' | cut -d = -f 2 | cut -d '>' -f 1)" |
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_debug2 DNSdataid "$DNSdataid" |
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_debug2 "DNSdataid: $DNSdataid" |
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DNSvalue="$(echo "$line" | sed 's/<td/@<td/g' | tr '@' '\n' | sed -n '5p' | cut -d '>' -f 2 | cut -d '<' -f 1)" |
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_debug2 DNSvalue "$DNSvalue" |
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# if [ "$DNSvalue" = "$txtvalue" ]; then |
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# Testing value match fails. Website is truncating the value |
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# field. So for now we will assume that there is only one TXT |
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# field for the sub domain and just delete it. Currently this |
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# is a safe assumption. |
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if _startswith "$DNSvalue" """; then |
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# remove the quotation from the start |
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DNSvalue="$(echo "$DNSvalue" | cut -c 7-)" |
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fi |
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if _endswith "$DNSvalue" "..."; then |
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# value was truncated, remove the dot dot dot from the end |
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DNSvalue="$(echo "$DNSvalue" | sed 's/...$//')" |
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elif _endswith "$DNSvalue" """; then |
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# else remove the closing quotation from the end |
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DNSvalue="$(echo "$DNSvalue" | sed 's/......$//')" |
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fi |
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_debug2 "DNSvalue: $DNSvalue" |
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if [ -n "$DNSdataid" ] && _startswith "$txtvalue" "$DNSvalue"; then |
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# Found a match. But note... Website is truncating the |
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# value field so we are only testing that part that is not |
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# truncated. This should be accurate enough. |
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_debug "Deleting TXT record for $fulldomain, $txtvalue" |
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_freedns_delete_txt_record "$FREEDNS_COOKIE" "$DNSdataid" |
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return $? |
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# fi |
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fi |
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fi |
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fi |
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done |
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done |
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# If we get this far we did not find a match (after two attempts) |
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# Not necessarily an error, but log anyway. |
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_debug2 "$subdomain_csv" |
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_info "Cannot delete TXT record for $fulldomain/$txtvalue. Does not exist at FreeDNS" |
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_debug3 "$subdomain_csv" |
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_info "Cannot delete TXT record for $fulldomain, $txtvalue. Does not exist at FreeDNS" |
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return 0 |
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} |
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@ -272,7 +236,7 @@ _freedns_login() { |
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# if cookies is not empty then logon successful |
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if [ -z "$cookies" ]; then |
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_debug "$htmlpage" |
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_debug3 "htmlpage: $htmlpage" |
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_err "FreeDNS login failed for user $username. Check $HTTP_HEADER file" |
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return 1 |
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fi |
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@ -301,7 +265,7 @@ _freedns_retrieve_subdomain_page() { |
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return 1 |
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fi |
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_debug2 "$htmlpage" |
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_debug3 "htmlpage: $htmlpage" |
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printf "%s" "$htmlpage" |
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return 0 |
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@ -323,17 +287,17 @@ _freedns_add_txt_record() { |
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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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_debug "$htmlpage" |
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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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_debug "$htmlpage" |
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_debug3 "htmlpage: $htmlpage" |
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_err "FreeDNS failed to add TXT record for $subdomain as FreeDNS requested security code" |
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_err "Note that you cannot use automatic DNS validation for FreeDNS public domains" |
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return 1 |
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fi |
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_debug2 "$htmlpage" |
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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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@ -352,7 +316,7 @@ _freedns_delete_txt_record() { |
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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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_debug "$htmlheader" |
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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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neil
7 years ago
GitHub