acme.sh/dnsapi/dns_aws.sh
2017-01-31 15:57:43 +08:00

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#!/usr/bin/env sh
#
#AWS_ACCESS_KEY_ID="sdfsdfsdfljlbjkljlkjsdfoiwje"
#
#AWS_SECRET_ACCESS_KEY="xxxxxxx"
#This is the Amazon Route53 api wrapper for acme.sh
AWS_HOST="route53.amazonaws.com"
AWS_URL="https://$AWS_HOST"
AWS_WIKI="https://github.com/Neilpang/acme.sh/wiki/How-to-use-Amazon-Route53-API"
######## Public functions #####################
#Usage: dns_myapi_add _acme-challenge.www.domain.com "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
dns_aws_add() {
fulldomain=$1
txtvalue=$2
if [ -z "$AWS_ACCESS_KEY_ID" ] || [ -z "$AWS_SECRET_ACCESS_KEY" ]; then
AWS_ACCESS_KEY_ID=""
AWS_SECRET_ACCESS_KEY=""
_err "You don't specify aws route53 api key id and and api key secret yet."
_err "Please create you key and try again. see $(__green $AWS_WIKI)"
return 1
fi
if [ -z "$AWS_SESSION_TOKEN" ]; then
_saveaccountconf AWS_ACCESS_KEY_ID "$AWS_ACCESS_KEY_ID"
_saveaccountconf AWS_SECRET_ACCESS_KEY "$AWS_SECRET_ACCESS_KEY"
fi
_debug "First detect the root zone"
if ! _get_root "$fulldomain"; then
_err "invalid domain"
return 1
fi
_debug _domain_id "$_domain_id"
_debug _sub_domain "$_sub_domain"
_debug _domain "$_domain"
_aws_tmpl_xml="<ChangeResourceRecordSetsRequest xmlns=\"https://route53.amazonaws.com/doc/2013-04-01/\"><ChangeBatch><Changes><Change><Action>UPSERT</Action><ResourceRecordSet><Name>$fulldomain</Name><Type>TXT</Type><TTL>300</TTL><ResourceRecords><ResourceRecord><Value>\"$txtvalue\"</Value></ResourceRecord></ResourceRecords></ResourceRecordSet></Change></Changes></ChangeBatch></ChangeResourceRecordSetsRequest>"
if aws_rest POST "2013-04-01$_domain_id/rrset/" "" "$_aws_tmpl_xml" && _contains "$response" "ChangeResourceRecordSetsResponse"; then
_info "txt record updated success."
return 0
fi
return 1
}
#fulldomain txtvalue
dns_aws_rm() {
fulldomain=$1
txtvalue=$2
_debug "First detect the root zone"
if ! _get_root "$fulldomain"; then
_err "invalid domain"
return 1
fi
_debug _domain_id "$_domain_id"
_debug _sub_domain "$_sub_domain"
_debug _domain "$_domain"
_aws_tmpl_xml="<ChangeResourceRecordSetsRequest xmlns=\"https://route53.amazonaws.com/doc/2013-04-01/\"><ChangeBatch><Changes><Change><Action>DELETE</Action><ResourceRecordSet><ResourceRecords><ResourceRecord><Value>\"$txtvalue\"</Value></ResourceRecord></ResourceRecords><Name>$fulldomain.</Name><Type>TXT</Type><TTL>300</TTL></ResourceRecordSet></Change></Changes></ChangeBatch></ChangeResourceRecordSetsRequest>"
if aws_rest POST "2013-04-01$_domain_id/rrset/" "" "$_aws_tmpl_xml" && _contains "$response" "ChangeResourceRecordSetsResponse"; then
_info "txt record deleted success."
return 0
fi
return 1
}
#################### Private functions below ##################################
_get_root() {
domain=$1
i=2
p=1
if aws_rest GET "2013-04-01/hostedzone"; then
_debug "response" "$response"
while true; do
h=$(printf "%s" "$domain" | cut -d . -f $i-100)
if [ -z "$h" ]; then
#not valid
return 1
fi
if _contains "$response" "<Name>$h.</Name>"; then
hostedzone="$(echo "$response" | _egrep_o "<HostedZone><Id>[^<]*<.Id><Name>$h.<.Name>.*<.HostedZone>")"
_debug hostedzone "$hostedzone"
if [ -z "$hostedzone" ]; then
_err "Error, can not get hostedzone."
return 1
fi
_domain_id=$(printf "%s\n" "$hostedzone" | _egrep_o "<Id>.*<.Id>" | head -n 1 | _egrep_o ">.*<" | tr -d "<>")
if [ "$_domain_id" ]; then
_sub_domain=$(printf "%s" "$domain" | cut -d . -f 1-$p)
_domain=$h
return 0
fi
return 1
fi
p=$i
i=$(_math "$i" + 1)
done
fi
return 1
}
#method uri qstr data
aws_rest() {
mtd="$1"
ep="$2"
qsr="$3"
data="$4"
_debug mtd "$mtd"
_debug ep "$ep"
_debug qsr "$qsr"
_debug data "$data"
CanonicalURI="/$ep"
_debug2 CanonicalURI "$CanonicalURI"
CanonicalQueryString="$qsr"
_debug2 CanonicalQueryString "$CanonicalQueryString"
RequestDate="$(date -u +"%Y%m%dT%H%M%SZ")"
_debug2 RequestDate "$RequestDate"
#RequestDate="20161120T141056Z" ##############
export _H1="x-amz-date: $RequestDate"
aws_host="$AWS_HOST"
CanonicalHeaders="host:$aws_host\nx-amz-date:$RequestDate\n"
SignedHeaders="host;x-amz-date"
if [ -n "$AWS_SESSION_TOKEN" ]; then
export _H2="x-amz-security-token: $AWS_SESSION_TOKEN"
CanonicalHeaders="${CanonicalHeaders}x-amz-security-token:$AWS_SESSION_TOKEN\n"
SignedHeaders="${SignedHeaders};x-amz-security-token"
fi
_debug2 CanonicalHeaders "$CanonicalHeaders"
_debug2 SignedHeaders "$SignedHeaders"
RequestPayload="$data"
_debug2 RequestPayload "$RequestPayload"
Hash="sha256"
CanonicalRequest="$mtd\n$CanonicalURI\n$CanonicalQueryString\n$CanonicalHeaders\n$SignedHeaders\n$(printf "%s" "$RequestPayload" | _digest "$Hash" hex)"
_debug2 CanonicalRequest "$CanonicalRequest"
HashedCanonicalRequest="$(printf "$CanonicalRequest%s" | _digest "$Hash" hex)"
_debug2 HashedCanonicalRequest "$HashedCanonicalRequest"
Algorithm="AWS4-HMAC-SHA256"
_debug2 Algorithm "$Algorithm"
RequestDateOnly="$(echo "$RequestDate" | cut -c 1-8)"
_debug2 RequestDateOnly "$RequestDateOnly"
Region="us-east-1"
Service="route53"
CredentialScope="$RequestDateOnly/$Region/$Service/aws4_request"
_debug2 CredentialScope "$CredentialScope"
StringToSign="$Algorithm\n$RequestDate\n$CredentialScope\n$HashedCanonicalRequest"
_debug2 StringToSign "$StringToSign"
kSecret="AWS4$AWS_SECRET_ACCESS_KEY"
#kSecret="wJalrXUtnFEMI/K7MDENG+bPxRfiCYEXAMPLEKEY" ############################
_debug2 kSecret "$kSecret"
kSecretH="$(printf "%s" "$kSecret" | _hex_dump | tr -d " ")"
_debug2 kSecretH "$kSecretH"
kDateH="$(printf "$RequestDateOnly%s" | _hmac "$Hash" "$kSecretH" hex)"
_debug2 kDateH "$kDateH"
kRegionH="$(printf "$Region%s" | _hmac "$Hash" "$kDateH" hex)"
_debug2 kRegionH "$kRegionH"
kServiceH="$(printf "$Service%s" | _hmac "$Hash" "$kRegionH" hex)"
_debug2 kServiceH "$kServiceH"
kSigningH="$(printf "aws4_request%s" | _hmac "$Hash" "$kServiceH" hex)"
_debug2 kSigningH "$kSigningH"
signature="$(printf "$StringToSign%s" | _hmac "$Hash" "$kSigningH" hex)"
_debug2 signature "$signature"
Authorization="$Algorithm Credential=$AWS_ACCESS_KEY_ID/$CredentialScope, SignedHeaders=$SignedHeaders, Signature=$signature"
_debug2 Authorization "$Authorization"
_H3="Authorization: $Authorization"
_debug _H3 "$_H3"
url="$AWS_URL/$ep"
if [ "$mtd" = "GET" ]; then
response="$(_get "$url")"
else
response="$(_post "$data" "$url")"
fi
_ret="$?"
if [ "$_ret" = "0" ]; then
if _contains "$response" "<ErrorResponse"; then
_err "Response error:$response"
return 1
fi
fi
return "$_ret"
}