Merge pull request #4 from zLukas/aws_lambda

adding lambda source code

.gitignore

@@ -169,4 +169,5 @@ cython_debug/
 
 #terrafrom
 *.tfvars
-.terraform*
+.terraform*
+*.tfstate*

src/cert-generator/cmd/lambda.go

@@ -0,0 +1,63 @@
+package cmd
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"time"
+
+	"github.com/aws/aws-lambda-go/lambda"
+	"github.com/zLukas/CloudTools/src/cert-generator/pkg/aws"
+	"github.com/zLukas/CloudTools/src/cert-generator/pkg/tls"
+)
+
+type RequestEvent struct {
+	CACert    tls.CACert `json:"caCert"`
+	Cert      tls.Cert   `json:"cert"`
+	Requester string     `json:"requester"`
+}
+
+func handleRequest(ctx context.Context, event RequestEvent) (string, error) {
+
+	caKey, ca, err := tls.CreateCACertBytes(&event.CACert)
+	if err != nil {
+		return "fail", fmt.Errorf("Failed to create CaCert: %s", err.Error())
+	}
+	ceKey, ce, err := tls.CreateCertBytes(&event.Cert, caKey, ca)
+	if err != nil {
+		return "fail", fmt.Errorf("Failed to create Cert: %s", err.Error())
+	}
+	dbTable := os.Getenv("TABLE_NAME")
+	dbRegion := os.Getenv("DB_REGION")
+	db := aws.Database{}
+	if err != nil {
+		fmt.Printf("Error: %s", err)
+	}
+	currentTime := time.Now()
+
+	err = db.PutItem(aws.TableRecord{
+		CaCert: aws.CertItem{
+			PrivateKey: caKey,
+			Cert:       ca,
+		},
+		CeCert: aws.CertItem{
+			PrivateKey: ceKey,
+			Cert:       ce,
+		},
+		Name:         event.Requester,
+		CreationDate: currentTime.Format("2006.01.02 15:04:05"),
+	},
+		aws.WithDynamoDBLogin(dbRegion),
+		aws.WithTableName(dbTable),
+	)
+	if err != nil {
+		fmt.Printf("database upload error: %s", err.Error())
+	}
+
+	return "sucess", nil
+
+}
+
+func RunLambda() {
+	lambda.Start(handleRequest)
+}

src/cert-generator/cmd/tls-gen.go → src/cert-generator/cmd/local.go

@@ -1,4 +1,4 @@
-package main
+package cmd
 
 import (
 	"fmt"
@@ -8,8 +8,7 @@ import (
 	"github.com/zLukas/CloudTools/src/cert-generator/pkg/tls"
 )
 
-func main() {
-
+func RunLocal() {
 	var file string = ""
 	if len(os.Args) > 1 {
 		file = os.Args[1]
@@ -18,7 +17,7 @@ func main() {
 	config := input.Config{CfgFilePath: file}
 
 	if err := config.ParseInput(); err != nil {
-		fmt.Printf("cannot parse input file: %s", err)
+		fmt.Printf("cannot parse input file: %s", err.Error())
 		return
 	}
 
@@ -27,14 +26,6 @@ func main() {
 		fmt.Printf("Error: %s", err)
 	}
 
-	for k, el := range config.Cfg.Cert {
-
-		ceKey, ce, err := tls.CreateCertBytes(el, caKey, ca)
-		if err != nil {
-			fmt.Printf("Error: %s", err)
-		}
-		tls.WriteKeyCertFile(ceKey, ce, k+".pem")
-	}
-
 	tls.WriteKeyCertFile(caKey, ca, "CA-Certificate.pem")
+
 }

src/cert-generator/go.mod

@@ -2,4 +2,29 @@ module github.com/zLukas/CloudTools/src/cert-generator
 
 go 1.21.1
 
-require gopkg.in/yaml.v2 v2.4.0 // indirect
+require (
+	github.com/aws/aws-lambda-go v1.41.0
+	github.com/aws/aws-sdk-go v1.45.22
+	gopkg.in/yaml.v2 v2.4.0
+)
+
+require (
+	github.com/aws/aws-sdk-go-v2 v1.21.0 // indirect
+	github.com/aws/aws-sdk-go-v2/config v1.18.43 // indirect
+	github.com/aws/aws-sdk-go-v2/credentials v1.13.41 // indirect
+	github.com/aws/aws-sdk-go-v2/feature/dynamodb/attributevalue v1.10.40 // indirect
+	github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.13.11 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/configsources v1.1.41 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.4.35 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/ini v1.3.43 // indirect
+	github.com/aws/aws-sdk-go-v2/service/dynamodb v1.22.0 // indirect
+	github.com/aws/aws-sdk-go-v2/service/dynamodbstreams v1.15.5 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding v1.9.14 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/endpoint-discovery v1.7.35 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.9.35 // indirect
+	github.com/aws/aws-sdk-go-v2/service/sso v1.15.0 // indirect
+	github.com/aws/aws-sdk-go-v2/service/ssooidc v1.17.1 // indirect
+	github.com/aws/aws-sdk-go-v2/service/sts v1.23.0 // indirect
+	github.com/aws/smithy-go v1.14.2 // indirect
+	github.com/jmespath/go-jmespath v0.4.0 // indirect
+)

src/cert-generator/go.sum

@@ -1,3 +1,90 @@
+github.com/aws/aws-lambda-go v1.41.0 h1:l/5fyVb6Ud9uYd411xdHZzSf2n86TakxzpvIoz7l+3Y=
+github.com/aws/aws-lambda-go v1.41.0/go.mod h1:jwFe2KmMsHmffA1X2R09hH6lFzJQxzI8qK17ewzbQMM=
+github.com/aws/aws-sdk-go v1.45.19 h1:+4yXWhldhCVXWFOQRF99ZTJ92t4DtoHROZIbN7Ujk/U=
+github.com/aws/aws-sdk-go v1.45.19/go.mod h1:aVsgQcEevwlmQ7qHE9I3h+dtQgpqhFB+i8Phjh7fkwI=
+github.com/aws/aws-sdk-go v1.45.20 h1:U/wLZEwqVB6o2XlcJ7um8kczx+A1X2MgO2y4wdKDQTs=
+github.com/aws/aws-sdk-go v1.45.20/go.mod h1:aVsgQcEevwlmQ7qHE9I3h+dtQgpqhFB+i8Phjh7fkwI=
+github.com/aws/aws-sdk-go v1.45.22 h1:yq86HCbyWIn2A6Ayoa61WCf7jkMmsESXUB9+QrbxK50=
+github.com/aws/aws-sdk-go v1.45.22/go.mod h1:aVsgQcEevwlmQ7qHE9I3h+dtQgpqhFB+i8Phjh7fkwI=
+github.com/aws/aws-sdk-go-v2 v1.21.0 h1:gMT0IW+03wtYJhRqTVYn0wLzwdnK9sRMcxmtfGzRdJc=
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+github.com/aws/aws-sdk-go-v2/config v1.18.43 h1:IgdUtTRvUDC6eiJBqU6vh7bHFNAEBjQ8S+qJ7zVhDOs=
+github.com/aws/aws-sdk-go-v2/config v1.18.43/go.mod h1:NiFev8qlgg8MPzw3fO/EwzMZeZwlJEKGwfpjRPA9Nvw=
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+github.com/aws/aws-sdk-go-v2/credentials v1.13.41/go.mod h1:cc3Fn7DkKbJalPtQnudHGZZ8ml9+hwtbc1CJONsYYqk=
+github.com/aws/aws-sdk-go-v2/feature/dynamodb/attributevalue v1.10.40 h1:YS/4hWmEIgAgUcFWPWmeBvyjH1Bttvfn1gHYC3T0Jd0=
+github.com/aws/aws-sdk-go-v2/feature/dynamodb/attributevalue v1.10.40/go.mod h1:W4jFsOeGAVrQZWgoRY52fjYObqfjletWUlq4cssiBdw=
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 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
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src/cert-generator/main.go

@@ -0,0 +1,18 @@
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/zLukas/CloudTools/src/cert-generator/cmd"
+)
+
+func main() {
+	enviroment := os.Getenv("ENVIROMENT")
+	if enviroment == "LAMBDA" {
+		cmd.RunLambda()
+	} else {
+		fmt.Print("running locally\n")
+		cmd.RunLocal()
+	}
+}

src/cert-generator/pkg/aws/database.go

@@ -0,0 +1,39 @@
+package aws
+
+import (
+	"fmt"
+
+	"github.com/aws/aws-sdk-go-v2/service/dynamodb"
+)
+
+type Database struct {
+	TableName string
+	Client    interface{}
+}
+
+type DatabaseOption func(*Database)
+
+func WithTableName(n string) DatabaseOption {
+	return func(t *Database) {
+		t.TableName = n
+	}
+}
+
+func (t *Database) PutItem(item TableRecord, opts ...DatabaseOption) error {
+	for _, opt := range opts {
+		opt(t)
+	}
+
+	if t.Client == nil {
+		return fmt.Errorf("database client is nil")
+	}
+
+	if dynamoDbClient, ok := t.Client.(*dynamodb.Client); ok {
+		if err := dynamoDBPutItem(dynamoDbClient, item, t.TableName); err != nil {
+			return fmt.Errorf("failed to put dynamoDB item: %s", err.Error())
+		}
+	} else {
+		return fmt.Errorf("client not supported")
+	}
+	return nil
+}

src/cert-generator/pkg/aws/dynamoDb.go

@@ -0,0 +1,51 @@
+package aws
+
+import (
+	"context"
+	"fmt"
+	"log"
+
+	"github.com/aws/aws-sdk-go-v2/config"
+	"github.com/aws/aws-sdk-go-v2/feature/dynamodb/attributevalue"
+	"github.com/aws/aws-sdk-go-v2/service/dynamodb"
+	"github.com/aws/aws-sdk-go/aws"
+)
+
+func WithDynamoDBLogin(region string) DatabaseOption {
+	return func(t *Database) {
+		cfg, err := config.LoadDefaultConfig(context.TODO())
+		cfg.Region = region
+		if err != nil {
+			fmt.Printf("Cannot log into DB: %s", err.Error())
+			t.Client = nil
+			return
+		}
+		client := dynamodb.NewFromConfig(cfg)
+		if client == nil {
+			fmt.Printf("Cannot log into DB: %s", err.Error())
+			t.Client = nil
+			return
+		}
+		t.Client = client
+	}
+}
+
+func dynamoDBPutItem(client *dynamodb.Client, item TableRecord, table string) error {
+	_, err := client.DescribeTable(
+		context.TODO(), &dynamodb.DescribeTableInput{TableName: aws.String(table)})
+	if err != nil {
+		return fmt.Errorf("table error: %s", err.Error())
+	}
+
+	dbItem, err := attributevalue.MarshalMap(item)
+
+	if err != nil {
+		return fmt.Errorf("cannot marshal item into dynamoDBFormat")
+	}
+	_, err = client.PutItem(context.TODO(), &dynamodb.PutItemInput{
+		TableName: aws.String(table), Item: dbItem})
+	if err != nil {
+		log.Printf("Couldn't add item to table. Here's why: %v\n", err)
+	}
+	return nil
+}

src/cert-generator/pkg/aws/types.go

@@ -0,0 +1,13 @@
+package aws
+
+type CertItem struct {
+	PrivateKey []byte `dynamodbav:"PrivateKey"`
+	Cert       []byte `dynamodbav:"Cert"`
+}
+
+type TableRecord struct {
+	CaCert       CertItem `dynamodbav:"Ca"`
+	CeCert       CertItem `dynamodbav:"Ce"`
+	Name         string   `dynamodbav:"Name"`
+	CreationDate string   `dynamodbav:"CreationDate"`
+}