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Merge pull request #4687 from szhu25/ses-notifyhook
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Notify hook: AWS SES
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Neilpang authored Jul 8, 2023
2 parents 41b6aeb + a6b5f0c commit cd13aee
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225 changes: 225 additions & 0 deletions notify/aws_ses.sh
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#!/usr/bin/env sh

#
#AWS_ACCESS_KEY_ID="sdfsdfsdfljlbjkljlkjsdfoiwje"
#
#AWS_SECRET_ACCESS_KEY="xxxxxxx"
#
#AWS_SES_REGION="us-east-1"
#
#AWS_SES_TO="[email protected]"
#
#AWS_SES_FROM="[email protected]"
#
#AWS_SES_FROM_NAME="Something something"
#This is the Amazon SES api wrapper for acme.sh
AWS_WIKI="https://docs.aws.amazon.com/ses/latest/dg/send-email-api.html"

aws_ses_send() {
_subject="$1"
_content="$2"
_statusCode="$3" #0: success, 1: error 2($RENEW_SKIP): skipped
_debug "_statusCode" "$_statusCode"

AWS_ACCESS_KEY_ID="${AWS_ACCESS_KEY_ID:-$(_readaccountconf_mutable AWS_ACCESS_KEY_ID)}"
AWS_SECRET_ACCESS_KEY="${AWS_SECRET_ACCESS_KEY:-$(_readaccountconf_mutable AWS_SECRET_ACCESS_KEY)}"
AWS_SES_REGION="${AWS_SES_REGION:-$(_readaccountconf_mutable AWS_SES_REGION)}"

if [ -z "$AWS_ACCESS_KEY_ID" ] || [ -z "$AWS_SECRET_ACCESS_KEY" ]; then
_use_container_role || _use_instance_role
fi

if [ -z "$AWS_ACCESS_KEY_ID" ] || [ -z "$AWS_SECRET_ACCESS_KEY" ]; then
AWS_ACCESS_KEY_ID=""
AWS_SECRET_ACCESS_KEY=""
_err "You haven't specified the aws SES api key id and and api key secret yet."
_err "Please create your key and try again. see $(__green $AWS_WIKI)"
return 1
fi

if [ -z "$AWS_SES_REGION" ]; then
AWS_SES_REGION=""
_err "You haven't specified the aws SES api region yet."
_err "Please specify your region and try again. see https://docs.aws.amazon.com/general/latest/gr/ses.html"
return 1
fi

#save for future use, unless using a role which will be fetched as needed
if [ -z "$_using_role" ]; then
_saveaccountconf_mutable AWS_ACCESS_KEY_ID "$AWS_ACCESS_KEY_ID"
_saveaccountconf_mutable AWS_SECRET_ACCESS_KEY "$AWS_SECRET_ACCESS_KEY"
fi

AWS_SES_TO="${AWS_SES_TO:-$(_readaccountconf_mutable AWS_SES_TO)}"
if [ -z "$AWS_SES_TO" ]; then
AWS_SES_TO=""
_err "You didn't specify an email to AWS_SES_TO receive messages."
return 1
fi
_saveaccountconf_mutable AWS_SES_TO "$AWS_SES_TO"

AWS_SES_FROM="${AWS_SES_FROM:-$(_readaccountconf_mutable AWS_SES_FROM)}"
if [ -z "$AWS_SES_FROM" ]; then
AWS_SES_FROM=""
_err "You didn't specify an email to AWS_SES_FROM receive messages."
return 1
fi
_saveaccountconf_mutable AWS_SES_FROM "$AWS_SES_FROM"

AWS_SES_FROM_NAME="${AWS_SES_FROM_NAME:-$(_readaccountconf_mutable AWS_SES_FROM_NAME)}"
_saveaccountconf_mutable AWS_SES_FROM_NAME "$AWS_SES_FROM_NAME"

AWS_SES_SENDFROM="$AWS_SES_FROM_NAME <$AWS_SES_FROM>"

AWS_SES_ACTION="Action=SendEmail"
AWS_SES_SOURCE="Source=$AWS_SES_SENDFROM"
AWS_SES_TO="Destination.ToAddresses.member.1=$AWS_SES_TO"
AWS_SES_SUBJECT="Message.Subject.Data=$_subject"
AWS_SES_MESSAGE="Message.Body.Text.Data=$_content"

_data="${AWS_SES_ACTION}&${AWS_SES_SOURCE}&${AWS_SES_TO}&${AWS_SES_SUBJECT}&${AWS_SES_MESSAGE}"

response="$(aws_rest POST "" "" "$_data")"
}

_use_metadata() {
_aws_creds="$(
_get "$1" "" 1 |
_normalizeJson |
tr '{,}' '\n' |
while read -r _line; do
_key="$(echo "${_line%%:*}" | tr -d '"')"
_value="${_line#*:}"
_debug3 "_key" "$_key"
_secure_debug3 "_value" "$_value"
case "$_key" in
AccessKeyId) echo "AWS_ACCESS_KEY_ID=$_value" ;;
SecretAccessKey) echo "AWS_SECRET_ACCESS_KEY=$_value" ;;
Token) echo "AWS_SESSION_TOKEN=$_value" ;;
esac
done |
paste -sd' ' -
)"
_secure_debug "_aws_creds" "$_aws_creds"

if [ -z "$_aws_creds" ]; then
return 1
fi

eval "$_aws_creds"
_using_role=true
}

#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="email.$AWS_SES_REGION.amazonaws.com"
CanonicalHeaders="host:$aws_host\nx-amz-date:$RequestDate\n"
SignedHeaders="host;x-amz-date"
if [ -n "$AWS_SESSION_TOKEN" ]; then
export _H3="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="$AWS_SES_REGION"
Service="ses"

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" ############################

_secure_debug2 kSecret "$kSecret"

kSecretH="$(printf "%s" "$kSecret" | _hex_dump | tr -d " ")"
_secure_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="$(printf "%s" "aws4_request" | _hmac "$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"

_H2="Authorization: $Authorization"
_debug _H2 "$_H2"

url="https://$aws_host/$ep"
if [ "$qsr" ]; then
url="https://$aws_host/$ep?$qsr"
fi

if [ "$mtd" = "GET" ]; then
response="$(_get "$url")"
else
response="$(_post "$data" "$url")"
fi

_ret="$?"
_debug2 response "$response"
if [ "$_ret" = "0" ]; then
if _contains "$response" "<ErrorResponse"; then
_err "Response error:$response"
return 1
fi
fi
}

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