Smtp aws ses observer

go.mod

@@ -1,14 +1,36 @@
 module github.com/blueimp/aws-smtp-relay
 
-go 1.14
+go 1.19
 
 require (
-	github.com/aws/aws-sdk-go v1.38.61
-	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/go-sql-driver/mysql v1.5.0 // indirect
-	github.com/kr/pretty v0.2.0 // indirect
-	github.com/mhale/smtpd v0.0.0-20210322105601-438c8edb069c
-	github.com/stretchr/testify v1.5.1 // indirect
-	golang.org/x/crypto v0.0.0-20210513164829-c07d793c2f9a
-	gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 // indirect
+	github.com/aws/aws-sdk-go-v2/service/pinpointemail v1.12.4
+	github.com/aws/aws-sdk-go-v2/service/ses v1.15.3
+	github.com/mhale/smtpd v0.8.0
+	golang.org/x/crypto v0.6.0
+)
+
+require (
+	github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.4.10 // indirect
+	github.com/aws/aws-sdk-go-v2/credentials v1.13.15 // indirect
+	github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.12.23 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/ini v1.3.30 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/v4a v1.0.21 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding v1.9.11 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/checksum v1.1.24 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.9.23 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/s3shared v1.13.23 // indirect
+	github.com/aws/aws-sdk-go-v2/service/sso v1.12.4 // indirect
+	github.com/aws/aws-sdk-go-v2/service/ssooidc v1.14.4 // indirect
+	github.com/aws/aws-sdk-go-v2/service/sts v1.18.5 // indirect
+)
+
+require (
+	github.com/aws/aws-sdk-go-v2 v1.17.5 // indirect
+	github.com/aws/aws-sdk-go-v2/config v1.18.15
+	github.com/aws/aws-sdk-go-v2/internal/configsources v1.1.29 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.4.23 // indirect
+	github.com/aws/aws-sdk-go-v2/service/s3 v1.30.5
+	github.com/aws/aws-sdk-go-v2/service/sqs v1.20.4
+	github.com/aws/smithy-go v1.13.5 // indirect
+	github.com/jmespath/go-jmespath v0.4.0 // indirect
 )

go.sum

@@ -1,56 +1,60 @@
-github.com/aws/aws-sdk-go v1.30.3 h1:tmaR+qpBSig6RfhP9IoxALJEE1m0vfLy5tlnEIXu6WI=
-github.com/aws/aws-sdk-go v1.30.3/go.mod h1:5zCpMtNQVjRREroY7sYe8lOMRSxkhG6MZveU8YkpAk0=
-github.com/aws/aws-sdk-go v1.38.61 h1:wizuqQZe0K4iYJ+Slrs0aSQ4P94FAwqBUHwk46Iz5UA=
-github.com/aws/aws-sdk-go v1.38.61/go.mod h1:hcU610XS61/+aQV88ixoOzUoG7v3b31pl2zKMmprdro=
+github.com/aws/aws-sdk-go-v2 v1.17.5 h1:TzCUW1Nq4H8Xscph5M/skINUitxM5UBAyvm2s7XBzL4=
+github.com/aws/aws-sdk-go-v2 v1.17.5/go.mod h1:uzbQtefpm44goOPmdKyAlXSNcwlRgF3ePWVW6EtJvvw=
+github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.4.10 h1:dK82zF6kkPeCo8J1e+tGx4JdvDIQzj7ygIoLg8WMuGs=
+github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.4.10/go.mod h1:VeTZetY5KRJLuD/7fkQXMU6Mw7H5m/KP2J5Iy9osMno=
+github.com/aws/aws-sdk-go-v2/config v1.18.15 h1:509yMO0pJUGUugBP2H9FOFyV+7Mz7sRR+snfDN5W4NY=
+github.com/aws/aws-sdk-go-v2/config v1.18.15/go.mod h1:vS0tddZqpE8cD9CyW0/kITHF5Bq2QasW9Y1DFHD//O0=
+github.com/aws/aws-sdk-go-v2/credentials v1.13.15 h1:0rZQIi6deJFjOEgHI9HI2eZcLPPEGQPictX66oRFLL8=
+github.com/aws/aws-sdk-go-v2/credentials v1.13.15/go.mod h1:vRMLMD3/rXU+o6j2MW5YefrGMBmdTvkLLGqFwMLBHQc=
+github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.12.23 h1:Kbiv9PGnQfG/imNI4L/heyUXvzKmcWSBeDvkrQz5pFc=
+github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.12.23/go.mod h1:mOtmAg65GT1HIL/HT/PynwPbS+UG0BgCZ6vhkPqnxWo=
+github.com/aws/aws-sdk-go-v2/internal/configsources v1.1.29 h1:9/aKwwus0TQxppPXFmf010DFrE+ssSbzroLVYINA+xE=
+github.com/aws/aws-sdk-go-v2/internal/configsources v1.1.29/go.mod h1:Dip3sIGv485+xerzVv24emnjX5Sg88utCL8fwGmCeWg=
+github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.4.23 h1:b/Vn141DBuLVgXbhRWIrl9g+ww7G+ScV5SzniWR13jQ=
+github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.4.23/go.mod h1:mr6c4cHC+S/MMkrjtSlG4QA36kOznDep+0fga5L/fGQ=
+github.com/aws/aws-sdk-go-v2/internal/ini v1.3.30 h1:IVx9L7YFhpPq0tTnGo8u8TpluFu7nAn9X3sUDMb11c0=
+github.com/aws/aws-sdk-go-v2/internal/ini v1.3.30/go.mod h1:vsbq62AOBwQ1LJ/GWKFxX8beUEYeRp/Agitrxee2/qM=
+github.com/aws/aws-sdk-go-v2/internal/v4a v1.0.21 h1:QdxdY43AiwsqG/VAqHA7bIVSm3rKr8/p9i05ydA0/RM=
+github.com/aws/aws-sdk-go-v2/internal/v4a v1.0.21/go.mod h1:QtIEat7ksHH8nFItljyvMI0dGj8lipK2XZ4PhNihTEU=
+github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding v1.9.11 h1:y2+VQzC6Zh2ojtV2LoC0MNwHWc6qXv/j2vrQtlftkdA=
+github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding v1.9.11/go.mod h1:iV4q2hsqtNECrfmlXyord9u4zyuFEJX9eLgLpSPzWA8=
+github.com/aws/aws-sdk-go-v2/service/internal/checksum v1.1.24 h1:Qmm8klpAdkuN3/rPrIMa/hZQ1z93WMBPjOzdAsbSnlo=
+github.com/aws/aws-sdk-go-v2/service/internal/checksum v1.1.24/go.mod h1:QelGeWBVRh9PbbXsfXKTFlU9FjT6W2yP+dW5jMQzOkg=
+github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.9.23 h1:QoOybhwRfciWUBbZ0gp9S7XaDnCuSTeK/fySB99V1ls=
+github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.9.23/go.mod h1:9uPh+Hrz2Vn6oMnQYiUi/zbh3ovbnQk19YKINkQny44=
+github.com/aws/aws-sdk-go-v2/service/internal/s3shared v1.13.23 h1:qc+RW0WWZ2KApMnsu/EVCPqLTyIH55uc7YQq7mq4XqE=
+github.com/aws/aws-sdk-go-v2/service/internal/s3shared v1.13.23/go.mod h1:FJhZWVWBCcgAF8jbep7pxQ1QUsjzTwa9tvEXGw2TDRo=
+github.com/aws/aws-sdk-go-v2/service/pinpointemail v1.12.4 h1:NcxMBuHmNENvStkgvIJgAqvTmjBGv/drQSmxGuLRjVg=
+github.com/aws/aws-sdk-go-v2/service/pinpointemail v1.12.4/go.mod h1:slY3ISjHIVPkU8yFb9qDa12tBDaITlqdHLSbF+wIy7c=
+github.com/aws/aws-sdk-go-v2/service/s3 v1.30.5 h1:kFfb+NMap4R7nDvBYyABa/nw7KFMtAfygD1Hyoxh4uE=
+github.com/aws/aws-sdk-go-v2/service/s3 v1.30.5/go.mod h1:Dze3kNt4T+Dgb8YCfuIFSBLmE6hadKNxqfdF0Xmqz1I=
+github.com/aws/aws-sdk-go-v2/service/ses v1.15.3 h1:O7gl6f1Zi80GLQkyWFJi2PYzF8c7qd/iUBmLIVVp8og=
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+github.com/aws/aws-sdk-go-v2/service/sqs v1.20.4 h1:8bI15PB1gxNcW53Dx3DVPZltmRiNQbtEsCtHXabNYMc=
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 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

internal/receiver/aws_ses/cli.go

@@ -0,0 +1,39 @@
+package receiver
+
+import "flag"
+
+type CliArgs struct {
+	enableObserver         *bool
+	queueName              *string
+	queueTimeout           *int
+	queueMaxMessage        *int
+	queueS3Bucket          *string
+	queueSmtpHost          *string
+	queueSmtpPort          *int
+	queueSmtpConnectionTLS *bool
+	queueSmtpForceSTARTTLS *bool
+	queueSmtpInsecureTLS   *bool
+	queueSmtpIdentity      *string
+	queueSmtpUser          *string
+	queueSmtpPass          *string
+	queueSmtpMyName        *string
+	queueS3Prefix          *string
+}
+
+var FlagCliArgs = CliArgs{
+	enableObserver:         flag.Bool("o", false, "Enable AWS SES Observer"),
+	queueName:              flag.String("q", "", "Observer AWS SQS Queue Name"),
+	queueTimeout:           flag.Int("T", 10, "Observer AWS SQS Queue Timeout"),
+	queueMaxMessage:        flag.Int("m", 10, "Observer AWS SQS Queue MaxMessages"),
+	queueS3Bucket:          flag.String("b", "", "Observer AWS SQS Queue S3 Bucket"),
+	queueSmtpHost:          flag.String("H", "", "Observer Relay SMTP Host"),
+	queueSmtpPort:          flag.Int("P", 25, "Observer Relay SMTP Port"),
+	queueSmtpConnectionTLS: flag.Bool("S", false, "Observer Relay SMTP Connection TLS"),
+	queueSmtpForceSTARTTLS: flag.Bool("F", true, "Observer Relay SMTP Force STARTTLS"),
+	queueSmtpInsecureTLS:   flag.Bool("I", true, "Observer Relay SMTP Insecure TLS(Certs)"),
+	queueSmtpIdentity:      flag.String("Y", "", "Observer Relay SMTP Identity"),
+	queueSmtpUser:          flag.String("U", "", "Observer Relay SMTP User"),
+	queueSmtpPass:          flag.String("A", "", "Observer Relay SMTP User[QUEUE_SMTP_PASS]"),
+	queueSmtpMyName:        flag.String("E", "", "Observer Relay SMTP Hello Name"),
+	queueS3Prefix:          flag.String("X", "", "Observer AWS S3 Key Prefix"),
+}

internal/receiver/aws_ses/config.go

@@ -0,0 +1,87 @@
+package receiver
+
+import (
+	"context"
+	"errors"
+	"os"
+)
+
+type AwsSesConfig struct {
+	QueueName   string
+	Context     context.Context
+	Timeout     int32 // seconds
+	MaxMessages int32
+	Bucket      string
+	KeyPrefix   string
+	SMTP        struct {
+		Host          string
+		Port          int
+		ConnectionTLS bool // 465
+		ForceSTARTTLS bool // force STARTTLS
+		InsecureTLS   bool // skip TLS verification
+		User          *string
+		Pass          *string
+		Identity      *string // AUTH IDENTITY
+		MyName        *string // EHLO name
+	}
+}
+
+func ConfigureObserver(clis ...CliArgs) (*AwsSesConfig, error) {
+	cli := FlagCliArgs
+	if len(clis) != 0 {
+		cli = clis[0]
+	}
+	if !*cli.enableObserver {
+		return nil, nil
+	}
+	if *cli.queueName == "" {
+		return nil, errors.New("QueueName is required")
+	}
+	timeout := *cli.queueTimeout
+	maxMessage := *cli.queueMaxMessage
+	if *cli.queueS3Bucket == "" {
+		return nil, errors.New("QueueS3Bucket is required")
+	}
+	if *cli.queueSmtpHost == "" {
+		return nil, errors.New("SMTP Host is required")
+	}
+	pass, is := os.LookupEnv("QUEUE_SMTP_PASS")
+	if is {
+		cli.queueSmtpPass = &pass
+	}
+	if *cli.queueSmtpMyName == "" {
+		defMyName := "AWS-SMTP-Relay-Observer"
+		cli.queueSmtpMyName = &defMyName
+	}
+
+	observeCfg := &AwsSesConfig{
+		QueueName:   *cli.queueName,
+		Context:     context.Background(),
+		Timeout:     int32(timeout),
+		MaxMessages: int32(maxMessage),
+		Bucket:      *cli.queueS3Bucket,
+		KeyPrefix:   *cli.queueS3Prefix,
+		SMTP: struct {
+			Host          string
+			Port          int
+			ConnectionTLS bool
+			ForceSTARTTLS bool
+			InsecureTLS   bool
+			User          *string
+			Pass          *string
+			Identity      *string
+			MyName        *string
+		}{
+			Host:          *cli.queueSmtpHost,
+			Port:          *cli.queueSmtpPort,
+			ConnectionTLS: *cli.queueSmtpConnectionTLS,
+			ForceSTARTTLS: *cli.queueSmtpForceSTARTTLS,
+			InsecureTLS:   *cli.queueSmtpInsecureTLS,
+			User:          cli.queueSmtpUser,
+			Pass:          cli.queueSmtpPass,
+			Identity:      cli.queueSmtpIdentity,
+			MyName:        cli.queueSmtpMyName,
+		},
+	}
+	return observeCfg, nil
+}

internal/receiver/aws_ses/infra.go

@@ -0,0 +1,59 @@
+package receiver
+
+import (
+	"context"
+	"crypto/tls"
+	"io"
+	"net/smtp"
+
+	"github.com/aws/aws-sdk-go-v2/service/s3"
+	"github.com/aws/aws-sdk-go-v2/service/sqs"
+)
+
+type SQSClient interface {
+	GetQueueUrl(ctx context.Context, params *sqs.GetQueueUrlInput, optFns ...func(*sqs.Options)) (*sqs.GetQueueUrlOutput, error)
+	DeleteMessage(ctx context.Context, params *sqs.DeleteMessageInput, optFns ...func(*sqs.Options)) (*sqs.DeleteMessageOutput, error)
+	ReceiveMessage(ctx context.Context, params *sqs.ReceiveMessageInput, optFns ...func(*sqs.Options)) (*sqs.ReceiveMessageOutput, error)
+}
+
+type S3Client interface {
+	GetObject(ctx context.Context, params *s3.GetObjectInput, optFns ...func(*s3.Options)) (*s3.GetObjectOutput, error)
+	DeleteObject(ctx context.Context, params *s3.DeleteObjectInput, optFns ...func(*s3.Options)) (*s3.DeleteObjectOutput, error)
+}
+
+type SMTP interface {
+	Dial(addr string) (SMTPClient, error)
+	DialTLS(addr string, tls *tls.Config) (SMTPClient, error)
+}
+
+type awsSesSmtp struct{}
+
+func (s *awsSesSmtp) Dial(addr string) (SMTPClient, error) {
+	clt, err := smtp.Dial(addr)
+	// clt.DebugWriter = os.Stdout
+	return clt, err
+}
+
+func (s *awsSesSmtp) DialTLS(addr string, ctls *tls.Config) (SMTPClient, error) {
+	conn, err := tls.Dial("tcp", addr, ctls)
+	if err != nil {
+		return nil, err
+	}
+	clt, err := smtp.NewClient(conn, addr)
+	if err != nil {
+		return nil, err
+	}
+	// clt.DebugWriter = os.Stdout
+	return clt, err
+}
+
+type SMTPClient interface {
+	Close() error
+	Hello(host string) error
+	StartTLS(config *tls.Config) error
+	Auth(a smtp.Auth) error
+	Mail(from string) error
+	Rcpt(to string) error
+	Data() (io.WriteCloser, error)
+	Quit() error
+}

internal/receiver/aws_ses/log.go

@@ -0,0 +1,38 @@
+package receiver
+
+import (
+	"encoding/json"
+	"fmt"
+	"time"
+)
+
+type AwsLog struct {
+	Time      time.Time
+	Component string
+	Msg       *string `json:"Msg,omitempty"`
+	Error     *string `json:"Error,omitempty"`
+}
+
+func LogError(component string, format string, args ...any) error {
+	err := fmt.Errorf(format, args...)
+	errStr := err.Error()
+	entry := AwsLog{
+		Time:      time.Now().UTC(),
+		Component: component,
+		Error:     &errStr,
+	}
+	b, _ := json.Marshal(entry)
+	fmt.Println(string(b))
+	return err
+}
+
+func Log(component string, format string, args ...any) {
+	msg := fmt.Sprintf(format, args...)
+	entry := AwsLog{
+		Time:      time.Now().UTC(),
+		Component: component,
+		Msg:       &msg,
+	}
+	b, _ := json.Marshal(entry)
+	fmt.Println(string(b))
+}