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Used e_grep_o instead grep -Po, dns_pdns_rm() now deletes only entry with matching txt value

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This commit is contained in:
Nils Sandmann 2018-03-24 18:46:04 +01:00
parent 1f3f8a5073
commit a3f7ff90e3
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GPG Key ID: 605B8EC396A1D3B9
1 changed files with 47 additions and 11 deletions
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58
dnsapi/dns_pdns.sh
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@ -69,15 +69,21 @@ dns_pdns_add() {
#fulldomain
dns_pdns_rm() {
fulldomain=$1
txtvalue=$2
if [ -z "$PDNS_Ttl" ]; then
PDNS_Ttl="$DEFAULT_PDNS_TTL"
fi
_debug "Detect root zone"
if ! _get_root "$fulldomain"; then
_err "invalid domain"
return 1
fi
_debug _domain "$_domain"
if ! rm_record "$_domain" "$fulldomain"; then
if ! rm_record "$_domain" "$fulldomain" "$txtvalue"; then
return 1
fi
@ -90,12 +96,10 @@ set_record() {
full=$2
new_challenge=$3
_pdns_rest "GET" "/api/v1/servers/$PDNS_ServerId/zones/$root"
_record_string=""
_build_record_string "$new_challenge"
_existing_challenges=$(echo "$response" | _normalizeJson | grep -Po "\"name\":\"$fulldomain\\K.*?}]" | grep -Po 'content\":\"\\"\K[^\\]*')
_list_existingchallenges
for oldchallenge in $_existing_challenges; do
_record_string="${_record_string}, "
_build_record_string "$oldchallenge"
done
@ -104,6 +108,10 @@ set_record() {
return 1
fi
if ! notify_slaves "$root"; then
return 1
fi
return 0
}
@ -111,14 +119,37 @@ rm_record() {
_info "Remove record"
root=$1
full=$2
txtvalue=$3
if ! _pdns_rest "PATCH" "/api/v1/servers/$PDNS_ServerId/zones/$root" "{\"rrsets\": [{\"changetype\": \"DELETE\", \"name\": \"$full.\", \"type\": \"TXT\"}]}"; then
_err "Delete txt record error."
return 1
fi
#Enumerate existing acme challenges
_list_existingchallenges
if ! notify_slaves "$root"; then
return 1
if _contains "$_existing_challenges" "$txtvalue"; then
#Delete all challenges (PowerDNS API does not allow to delete content)
if ! _pdns_rest "PATCH" "/api/v1/servers/$PDNS_ServerId/zones/$root" "{\"rrsets\": [{\"changetype\": \"DELETE\", \"name\": \"$full.\", \"type\": \"TXT\"}]}"; then
_err "Delete txt record error."
return 1
fi
_record_string=""
#If the only existing challenge was the challenge to delete: nothing to do
if ! [ "$_existing_challenges" = "$txtvalue" ]; then
for oldchallenge in $_existing_challenges; do
#Build up the challenges to re-add, ommitting the one what should be deleted
if ! [ "$oldchallenge" = "$txtvalue" ]; then
_build_record_string "$oldchallenge"
fi
done
#Recreate the existing challenges
if ! _pdns_rest "PATCH" "/api/v1/servers/$PDNS_ServerId/zones/$root" "{\"rrsets\": [{\"changetype\": \"REPLACE\", \"name\": \"$full.\", \"type\": \"TXT\", \"ttl\": $PDNS_Ttl, \"records\": [$_record_string]}]}"; then
_err "Set txt record error."
return 1
fi
fi
if ! notify_slaves "$root"; then
return 1
fi
else
_info "Record not found, nothing to remove"
fi
return 0
@ -192,5 +223,10 @@ _pdns_rest() {
}
_build_record_string() {
_record_string="${_record_string}{\"content\": \"\\\"$1\\\"\", \"disabled\": false}"
_record_string="${_record_string:+${_record_string}, }{\"content\": \"\\\"${1}\\\"\", \"disabled\": false}"
}
_list_existingchallenges() {
_pdns_rest "GET" "/api/v1/servers/$PDNS_ServerId/zones/$root"
_existing_challenges=$(echo "$response" | _normalizeJson | _egrep_o "\"name\":\"${fulldomain}[^]]*}" | _egrep_o 'content\":\"\\"[^\\]*' | sed -n 's/^content":"\\"//p')
}