├── .editorconfig ├── .gitignore ├── LICENSE ├── Makefile ├── README.md ├── cmd ├── lambda-api-authorizer │ ├── config.go │ ├── keyprovider.go │ ├── main.go │ └── verifier.go ├── lambda-api-client │ └── main.go ├── lambda-api-server │ └── main.go ├── lambda-cert-stream │ └── main.go ├── lambda-revocation-notifier │ ├── config.go │ ├── main.go │ └── template.go ├── lambda-rotate-ca │ └── main.go └── ovpn-helper │ ├── main.go │ └── utils.go ├── frontend ├── .env ├── .eslintrc.js ├── .gitignore ├── .postcssrc.js ├── babel.config.js ├── package-lock.json ├── package.json ├── public │ ├── _errors │ │ └── 403.html │ ├── favicon.ico │ ├── favicon.png │ ├── index.html │ └── robots.txt ├── src │ ├── App.vue │ ├── api │ │ └── index.js │ ├── components │ │ ├── CertificateList.vue │ │ └── GoogleLogin.vue │ ├── main.js │ ├── plugins │ │ └── vuetify.js │ ├── router.js │ ├── store │ │ ├── index.js │ │ └── modules │ │ │ ├── certs.js │ │ │ └── gauth.js │ ├── utils │ │ ├── crypto.js │ │ └── download.js │ └── views │ │ └── Home.vue └── vue.config.js ├── go.mod ├── go.sum ├── gomod.sh └── pkg ├── api ├── client │ ├── api.go │ ├── cert_delete.go │ ├── cert_get.go │ ├── cert_list.go │ └── cert_put.go ├── server │ ├── api.go │ ├── server_config.go │ ├── server_connect.go │ ├── server_disconnect.go │ └── server_verify.go └── utils.go ├── aws ├── clients.go ├── events.go ├── gsutesecrets.go └── sign.go ├── gsuite └── gdirectory.go ├── ovpn ├── config_client.go ├── config_server.go └── templates.go └── pki ├── aws ├── aws.go ├── config.go ├── dynamodb.go ├── model.go └── secrets.go ├── cakey.go ├── cakey_test.go ├── certs.go ├── model.go ├── options.go ├── pki.go ├── statickey.go └── utils.go /.editorconfig: -------------------------------------------------------------------------------- 1 | root = true 2 | 3 | [*] 4 | charset = utf-8 5 | end_of_line = lf 6 | insert_final_newline = true 7 | 8 | [frontend/src/**.{js,vue}] 9 | indent_style = space 10 | indent_size = 2 11 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | .idea/ 2 | .DS_Store 3 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright [yyyy] [name of copyright owner] 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | -------------------------------------------------------------------------------- /Makefile: -------------------------------------------------------------------------------- 1 | .PHONY: build clean gomodgen 2 | 3 | build: gomodgen 4 | export GO111MODULE=on 5 | env GOOS=linux GOARCH=amd64 go build -ldflags="-s -w" -o bin/api-authorizer github.com/empathyco/aws-vpn/cmd/lambda-api-authorizer 6 | env GOOS=linux GOARCH=amd64 go build -ldflags="-s -w" -o bin/api-client github.com/empathyco/aws-vpn/cmd/lambda-api-client 7 | env GOOS=linux GOARCH=amd64 go build -ldflags="-s -w" -o bin/api-server github.com/empathyco/aws-vpn/cmd/lambda-api-server 8 | env GOOS=linux GOARCH=amd64 go build -ldflags="-s -w" -o bin/cert-stream github.com/empathyco/aws-vpn/cmd/lambda-cert-stream 9 | env GOOS=linux GOARCH=amd64 go build -ldflags="-s -w" -o bin/revocation-notifier github.com/empathyco/aws-vpn/cmd/lambda-revocation-notifier 10 | env GOOS=linux GOARCH=amd64 go build -ldflags="-s -w" -o bin/rotate-ca github.com/empathyco/aws-vpn/cmd/lambda-rotate-ca 11 | env GOOS=linux GOARCH=amd64 go build -ldflags="-s -w" -o bin/ovpn-helper github.com/empathyco/aws-vpn/cmd/ovpn-helper 12 | clean: 13 | rm -rf ./bin ./vendor Gopkg.lock 14 | 15 | gomodgen: 16 | chmod u+x gomod.sh 17 | ./gomod.sh 18 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # aws-vpn 2 | A Serverless OpenVPN Certificate Authority running on AWS 3 | 4 | Documentation is coming soon. A detailed introduction is available on the following [article](https://medium.com/empathybroker/build-a-cheaper-more-flexible-vpn-solution-on-aws-with-our-open-source-openvpn-certificate-1a94661ac0af) 5 | 6 | 7 | License 8 | ---- 9 | 10 | Copyright 2021 Empathy 11 | 12 | Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at 13 | 14 | https://www.apache.org/licenses/LICENSE-2.0 15 | 16 | Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. 17 | -------------------------------------------------------------------------------- /cmd/lambda-api-authorizer/config.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import "github.com/kelseyhightower/envconfig" 4 | 5 | const kConfigPrefix = "AUTH" 6 | 7 | var configApiAuthorizer struct { 8 | Audience string `split_words:"true" required:"true"` 9 | HostedDomains []string `split_words:"true" required:"true"` 10 | } 11 | 12 | func init() { 13 | envconfig.MustProcess(kConfigPrefix, &configApiAuthorizer) 14 | } 15 | -------------------------------------------------------------------------------- /cmd/lambda-api-authorizer/keyprovider.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "context" 5 | "encoding/json" 6 | "net/http" 7 | "time" 8 | 9 | "github.com/pkg/errors" 10 | log "github.com/sirupsen/logrus" 11 | jose "gopkg.in/square/go-jose.v2" 12 | ) 13 | 14 | const ( 15 | kGoogleKeysEndpoint = "https://www.googleapis.com/oauth2/v3/certs" 16 | ) 17 | 18 | type KeyProvider interface { 19 | Keys(ctx context.Context) *jose.JSONWebKeySet 20 | } 21 | 22 | type RemoteKeyProvider struct { 23 | endpoint string 24 | client http.Client 25 | keySet *jose.JSONWebKeySet 26 | expires time.Time 27 | } 28 | 29 | func NewRemoteKeyProvider(endpoint string) KeyProvider { 30 | return &RemoteKeyProvider{ 31 | endpoint: endpoint, 32 | client: http.Client{ 33 | Timeout: 5 * time.Second, 34 | }, 35 | } 36 | } 37 | 38 | func NewGoogleKeyProvider() KeyProvider { 39 | return NewRemoteKeyProvider(kGoogleKeysEndpoint) 40 | } 41 | 42 | func (p *RemoteKeyProvider) updateKeySet(ctx context.Context) error { 43 | log.Debugf("Updating JWKs from %s", p.endpoint) 44 | 45 | req, err := http.NewRequest(http.MethodGet, p.endpoint, http.NoBody) 46 | if err != nil { 47 | return errors.WithStack(err) 48 | } 49 | 50 | res, err := p.client.Do(req.WithContext(ctx)) 51 | if err != nil { 52 | return errors.WithStack(err) 53 | } 54 | defer res.Body.Close() 55 | 56 | if res.StatusCode != http.StatusOK { 57 | return errors.Errorf("jwk endpoint returned status %d", res.StatusCode) 58 | } 59 | 60 | var keySet *jose.JSONWebKeySet 61 | if err = json.NewDecoder(res.Body).Decode(&keySet); err != nil { 62 | return errors.Wrap(err, "error parsing jwk endpoint response") 63 | } 64 | p.keySet = keySet 65 | 66 | if exp := res.Header.Get("Expires"); exp != "" { 67 | if exptime, err := time.Parse(time.RFC1123, exp); err == nil { 68 | p.expires = exptime.UTC() 69 | } else { 70 | log.WithError(err).Warnf("Error parsing JWKs expiration") 71 | } 72 | } 73 | 74 | log.Debugf("Updated JWKs (%d keys, next update on %s)", len(p.keySet.Keys), p.expires) 75 | return nil 76 | } 77 | 78 | func (p *RemoteKeyProvider) Keys(ctx context.Context) *jose.JSONWebKeySet { 79 | if time.Now().UTC().After(p.expires) { 80 | if err := p.updateKeySet(ctx); err != nil { 81 | log.WithError(err).Error("Error updating JWKs") 82 | } 83 | } 84 | 85 | return p.keySet 86 | } 87 | -------------------------------------------------------------------------------- /cmd/lambda-api-authorizer/main.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "context" 5 | "encoding/json" 6 | "os" 7 | "strings" 8 | "time" 9 | 10 | "github.com/aws/aws-lambda-go/events" 11 | "github.com/aws/aws-lambda-go/lambda" 12 | "github.com/aws/aws-sdk-go/aws/arn" 13 | awsservices "github.com/empathybroker/aws-vpn/pkg/aws" 14 | "github.com/empathybroker/aws-vpn/pkg/gsuite" 15 | "github.com/pkg/errors" 16 | log "github.com/sirupsen/logrus" 17 | ) 18 | 19 | func init() { 20 | if os.Getenv("DEBUG") == "true" { 21 | log.SetLevel(log.DebugLevel) 22 | } 23 | log.SetFormatter(&log.JSONFormatter{ 24 | TimestampFormat: time.RFC3339Nano, 25 | FieldMap: log.FieldMap{ 26 | log.FieldKeyTime: "@timestamp", 27 | }, 28 | }) 29 | 30 | verifier = NewGoogleTokenVerifier(configApiAuthorizer.Audience) 31 | } 32 | 33 | var ( 34 | verifier *TokenVerifier 35 | 36 | awsSM = awsservices.NewSecretsManagerClient() 37 | gDirectory = gsuite.NewGoogleDirectory(awsservices.NewAWSServiceAccountProvider(awsSM, "VPN/GoogleServiceAccount")) 38 | ) 39 | 40 | type googleClaims struct { 41 | Name string `json:"name"` 42 | Email string `json:"email"` 43 | EmailVerified bool `json:"email_verified"` 44 | HostedDomain string `json:"hd"` 45 | } 46 | 47 | func (c googleClaims) verifyHostedDomain() bool { 48 | for _, hd := range configApiAuthorizer.HostedDomains { 49 | if c.HostedDomain == hd { 50 | return true 51 | } 52 | } 53 | return false 54 | } 55 | 56 | func authHandler(ctx context.Context, input *events.APIGatewayCustomAuthorizerRequest) (*events.APIGatewayCustomAuthorizerResponse, error) { 57 | if input.Type != "TOKEN" { 58 | return nil, errors.New("expected TOKEN authorizer") 59 | } 60 | 61 | method, err := arn.Parse(input.MethodArn) 62 | if err != nil { 63 | return nil, errors.Wrapf(err, "parsing method ARN") 64 | } 65 | log.Debugf("method: %s", method) 66 | 67 | authn := strings.SplitN(input.AuthorizationToken, " ", 2) 68 | if len(authn) != 2 || authn[0] != "Bearer" { 69 | log.Error("Invalid auth header") 70 | return nil, errors.New("Unauthorized") 71 | } 72 | 73 | var extraClaims *googleClaims 74 | jwtClaims, err := verifier.VerifyToken(ctx, authn[1], &extraClaims) 75 | if err != nil { 76 | log.WithError(err).Error("Invalid token") 77 | return nil, errors.New("Unauthorized") 78 | } 79 | 80 | if !extraClaims.EmailVerified { 81 | log.Error("Unverified email") 82 | return nil, errors.New("Unauthorized") 83 | } 84 | 85 | if !extraClaims.verifyHostedDomain() { 86 | log.Errorf("invalid hosted domain: %s", extraClaims.HostedDomain) 87 | return nil, errors.New("Unauthorized") 88 | } 89 | 90 | userInfo, err := gDirectory.GetUserInfo(ctx, jwtClaims.Subject) 91 | if err != nil { 92 | log.WithError(err).Error("Error fetching user info") 93 | return nil, errors.New("Unauthorized") 94 | } 95 | 96 | for k := range userInfo.Schemas { 97 | if k != "VPN" { 98 | delete(userInfo.Schemas, k) 99 | } 100 | } 101 | 102 | googleInfo, err := json.Marshal(userInfo) 103 | if err != nil { 104 | log.WithError(err).Error("Error marshaling Google info") 105 | return nil, errors.New("Unauthorized") 106 | } 107 | 108 | authContext := make(map[string]interface{}) 109 | authContext["email"] = extraClaims.Email 110 | authContext["hd"] = extraClaims.HostedDomain 111 | authContext["name"] = extraClaims.Name 112 | authContext["google"] = string(googleInfo) 113 | 114 | var stmts []events.IAMPolicyStatement 115 | stmts = append(stmts, events.IAMPolicyStatement{ 116 | Effect: "Allow", 117 | Action: []string{"execute-api:Invoke"}, 118 | Resource: []string{"*"}, 119 | }) 120 | 121 | log.Infof("Authorized: %s", extraClaims.Email) 122 | 123 | return &events.APIGatewayCustomAuthorizerResponse{ 124 | PrincipalID: jwtClaims.Subject, 125 | Context: authContext, 126 | PolicyDocument: events.APIGatewayCustomAuthorizerPolicy{ 127 | Version: "2012-10-17", 128 | Statement: stmts, 129 | }, 130 | }, nil 131 | } 132 | 133 | func main() { 134 | lambda.Start(authHandler) 135 | } 136 | -------------------------------------------------------------------------------- /cmd/lambda-api-authorizer/verifier.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "context" 5 | "time" 6 | 7 | "github.com/pkg/errors" 8 | "gopkg.in/square/go-jose.v2/jwt" 9 | ) 10 | 11 | const ( 12 | kGoogleIssuer = "accounts.google.com" 13 | ) 14 | 15 | type TokenVerifier struct { 16 | keyProvider KeyProvider 17 | expIssuer string 18 | expAudience string 19 | } 20 | 21 | func NewTokenVerifier(keyProvider KeyProvider, iss string, aud string) *TokenVerifier { 22 | return &TokenVerifier{ 23 | keyProvider: keyProvider, 24 | expIssuer: iss, 25 | expAudience: aud, 26 | } 27 | } 28 | 29 | func NewGoogleTokenVerifier(aud string) *TokenVerifier { 30 | return NewTokenVerifier(NewGoogleKeyProvider(), kGoogleIssuer, aud) 31 | } 32 | 33 | func (v *TokenVerifier) VerifyToken(ctx context.Context, token string, extra interface{}) (*jwt.Claims, error) { 34 | j, err := jwt.ParseSigned(token) 35 | if err != nil { 36 | return nil, errors.WithStack(err) 37 | } 38 | 39 | var claims *jwt.Claims 40 | if err := j.Claims(v.keyProvider.Keys(ctx), &claims, extra); err == nil { 41 | if err := claims.Validate(jwt.Expected{ 42 | Issuer: v.expIssuer, 43 | Audience: []string{v.expAudience}, 44 | Time: time.Now().UTC(), 45 | }); err != nil { 46 | return nil, errors.WithStack(err) 47 | } 48 | 49 | return claims, nil 50 | } 51 | 52 | return nil, errors.New("no key found to verify JWT token") 53 | } 54 | -------------------------------------------------------------------------------- /cmd/lambda-api-client/main.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "net/http" 5 | "os" 6 | "time" 7 | 8 | "github.com/aws/aws-lambda-go/lambda" 9 | "github.com/awslabs/aws-lambda-go-api-proxy/gorillamux" 10 | clientapi "github.com/empathybroker/aws-vpn/pkg/api/client" 11 | log "github.com/sirupsen/logrus" 12 | ) 13 | 14 | func init() { 15 | if os.Getenv("DEBUG") == "true" { 16 | log.SetLevel(log.DebugLevel) 17 | } 18 | log.SetFormatter(&log.JSONFormatter{ 19 | TimestampFormat: time.RFC3339Nano, 20 | FieldMap: log.FieldMap{ 21 | log.FieldKeyTime: "@timestamp", 22 | }, 23 | }) 24 | } 25 | 26 | func main() { 27 | router := clientapi.NewRouter() 28 | if _, ok := os.LookupEnv("AWS_LAMBDA_FUNCTION_NAME"); ok { 29 | adapter := gorillamux.New(router) 30 | adapter.StripBasePath("/api/client") 31 | lambda.Start(adapter.Proxy) 32 | return 33 | } 34 | 35 | if err := http.ListenAndServe("localhost:5000", router); err != nil { 36 | log.WithError(err).Fatal("Error serving") 37 | } 38 | } 39 | -------------------------------------------------------------------------------- /cmd/lambda-api-server/main.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "net/http" 5 | "os" 6 | "time" 7 | 8 | "github.com/aws/aws-lambda-go/lambda" 9 | "github.com/awslabs/aws-lambda-go-api-proxy/gorillamux" 10 | serverapi "github.com/empathybroker/aws-vpn/pkg/api/server" 11 | log "github.com/sirupsen/logrus" 12 | ) 13 | 14 | func init() { 15 | if os.Getenv("DEBUG") == "true" { 16 | log.SetLevel(log.DebugLevel) 17 | } 18 | log.SetFormatter(&log.JSONFormatter{ 19 | TimestampFormat: time.RFC3339Nano, 20 | FieldMap: log.FieldMap{ 21 | log.FieldKeyTime: "@timestamp", 22 | }, 23 | }) 24 | } 25 | 26 | func main() { 27 | router := serverapi.NewRouter() 28 | if _, ok := os.LookupEnv("AWS_LAMBDA_FUNCTION_NAME"); ok { 29 | adapter := gorillamux.New(router) 30 | adapter.StripBasePath("/api/server") 31 | lambda.Start(adapter.Proxy) 32 | return 33 | } 34 | 35 | if err := http.ListenAndServe("localhost:5000", router); err != nil { 36 | log.WithError(err).Fatal("Error serving") 37 | } 38 | } 39 | -------------------------------------------------------------------------------- /cmd/lambda-cert-stream/main.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "context" 5 | "crypto/x509" 6 | "encoding/hex" 7 | "os" 8 | "time" 9 | 10 | "github.com/aws/aws-lambda-go/events" 11 | "github.com/aws/aws-lambda-go/lambda" 12 | awsservices "github.com/empathybroker/aws-vpn/pkg/aws" 13 | "github.com/empathybroker/aws-vpn/pkg/pki" 14 | "github.com/pkg/errors" 15 | log "github.com/sirupsen/logrus" 16 | ) 17 | 18 | const ( 19 | kAttrSerialNumber = "SerialNumber" 20 | kAttrAuthorityKeyId = "AuthorityKeyId" 21 | kAttrSubjectKeyId = "SubjectKeyId" 22 | kAttrSubjectName = "SubjectName" 23 | kAttrCertType = "CertType" 24 | kAttrIssuedAt = "IssuedAt" 25 | kAttrValidUntil = "ValidUntil" 26 | kAttrRevocationTime = "RevocationTime" 27 | kAttrData = "Data" 28 | ) 29 | 30 | var ( 31 | snsClient = awsservices.NewSNSClient() 32 | ) 33 | 34 | func init() { 35 | if os.Getenv("DEBUG") == "true" { 36 | log.SetLevel(log.DebugLevel) 37 | } 38 | log.SetFormatter(&log.JSONFormatter{ 39 | TimestampFormat: time.RFC3339Nano, 40 | FieldMap: log.FieldMap{ 41 | log.FieldKeyTime: "@timestamp", 42 | }, 43 | }) 44 | } 45 | 46 | func parseCertificate(data map[string]events.DynamoDBAttributeValue) (info pki.CertificateInfo, err error) { 47 | defer func() { 48 | if r := recover(); r != nil { 49 | err = errors.Errorf("Panic parsing certificate: %s", r) 50 | } 51 | }() 52 | 53 | for k, v := range data { 54 | switch k { 55 | case kAttrData: 56 | cert, err := x509.ParseCertificate(v.Binary()) 57 | if err != nil { 58 | return info, err 59 | } 60 | info.Certificate = cert 61 | case kAttrCertType: 62 | info.CertType = pki.CertType(v.String()) 63 | case kAttrSerialNumber: 64 | info.SerialBytes = v.Binary() 65 | info.Serial = hex.EncodeToString(info.SerialBytes) 66 | case kAttrSubjectKeyId: 67 | info.KeyId = hex.EncodeToString(v.Binary()) 68 | case kAttrSubjectName: 69 | info.Subject = v.String() 70 | case kAttrIssuedAt: 71 | intv, err := v.Integer() 72 | if err != nil { 73 | return info, err 74 | } 75 | info.NotBefore = time.Unix(intv, 0).UTC() 76 | case kAttrValidUntil: 77 | intv, err := v.Integer() 78 | if err != nil { 79 | return info, err 80 | } 81 | info.NotAfter = time.Unix(intv, 0).UTC() 82 | case kAttrRevocationTime: 83 | intv, err := v.Integer() 84 | if err != nil { 85 | return info, err 86 | } 87 | if intv > 0 { 88 | rt := time.Unix(intv, 0).UTC() 89 | info.Revoked = &rt 90 | } 91 | } 92 | } 93 | 94 | return info, nil 95 | } 96 | 97 | func Handler(ctx context.Context, event events.DynamoDBEvent) error { 98 | for _, record := range event.Records { 99 | event := make(map[string]interface{}) 100 | 101 | switch record.EventName { 102 | case string(events.DynamoDBOperationTypeInsert): 103 | event["event"] = "cert_store_new" 104 | case string(events.DynamoDBOperationTypeModify): 105 | event["event"] = "cert_store_updated" 106 | case string(events.DynamoDBOperationTypeRemove): 107 | event["event"] = "cert_store_deleted" 108 | default: 109 | log.Errorf("Unknown operation type: %s", record.EventName) 110 | continue 111 | } 112 | 113 | keySerial, ok := record.Change.Keys[kAttrSerialNumber] 114 | if !ok || keySerial.DataType() != events.DataTypeBinary { 115 | log.Errorf("Missing %s key", kAttrSerialNumber) 116 | continue 117 | } 118 | event["serial"] = hex.EncodeToString(keySerial.Binary()) 119 | 120 | if len(record.Change.NewImage) > 0 { 121 | info, err := parseCertificate(record.Change.NewImage) 122 | if err != nil { 123 | log.WithError(err).Errorf("Error parsing new DynamoDB image") 124 | continue 125 | } 126 | event["cert"] = info 127 | } 128 | 129 | if len(record.Change.OldImage) > 0 { 130 | info, err := parseCertificate(record.Change.OldImage) 131 | if err != nil { 132 | log.WithError(err).Errorf("Error parsing old DynamoDB image") 133 | continue 134 | } 135 | event["cert_prev"] = info 136 | } 137 | 138 | if err := awsservices.PublishEvent(snsClient, ctx, event); err != nil { 139 | log.WithError(err).Errorf("Error publishing event") 140 | continue 141 | } 142 | } 143 | 144 | return nil 145 | } 146 | 147 | func main() { 148 | lambda.Start(Handler) 149 | } 150 | -------------------------------------------------------------------------------- /cmd/lambda-revocation-notifier/config.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "github.com/kelseyhightower/envconfig" 5 | ) 6 | 7 | const kConfigPrefix = "NOTIFIER" 8 | 9 | var configNotifier struct { 10 | EmailFrom string `split_words:"true" required:"true"` 11 | EmailSubject string `split_words:"true" default:"VPN Certificate Expiration"` 12 | EmailSignature string `split_words:"true" default:"Your Friendly Ops Team"` 13 | EmailSourceArn string `split_words:"true"` 14 | 15 | AdminURL string `split_words:"true" required:"true"` 16 | HelpURL string `split_words:"true" required:"true"` 17 | 18 | DaysBefore int `split_words:"true" default:"3"` 19 | } 20 | 21 | func init() { 22 | envconfig.MustProcess(kConfigPrefix, &configNotifier) 23 | } 24 | -------------------------------------------------------------------------------- /cmd/lambda-revocation-notifier/main.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "bytes" 5 | "context" 6 | "io" 7 | "os" 8 | "sort" 9 | "time" 10 | 11 | "github.com/aws/aws-lambda-go/lambda" 12 | "github.com/aws/aws-sdk-go/aws" 13 | "github.com/aws/aws-sdk-go/service/ses" 14 | awsservices "github.com/empathybroker/aws-vpn/pkg/aws" 15 | "github.com/empathybroker/aws-vpn/pkg/pki" 16 | awspki "github.com/empathybroker/aws-vpn/pkg/pki/aws" 17 | "github.com/pkg/errors" 18 | log "github.com/sirupsen/logrus" 19 | ) 20 | 21 | func init() { 22 | if os.Getenv("DEBUG") == "true" { 23 | log.SetLevel(log.DebugLevel) 24 | } 25 | log.SetFormatter(&log.JSONFormatter{ 26 | TimestampFormat: time.RFC3339Nano, 27 | FieldMap: log.FieldMap{ 28 | log.FieldKeyTime: "@timestamp", 29 | }, 30 | }) 31 | } 32 | 33 | var ( 34 | sesClient = awsservices.NewSESClient() 35 | pkiStorage = awspki.NewAWSStorage(awsservices.NewSecretsManagerClient(), awsservices.NewDynamoDBClient()) 36 | awsPKI = pki.NewPKI(pkiStorage) 37 | ) 38 | 39 | func getEmailBody(w io.Writer, certs []*pki.CertificateInfo) error { 40 | sort.Slice(certs, func(i, j int) bool { 41 | return certs[i].NotAfter.Before(certs[j].NotAfter) 42 | }) 43 | 44 | return tplEmail.Execute(w, bodyData{ 45 | Certificates: certs, 46 | 47 | AdminURL: configNotifier.AdminURL, 48 | HelpURL: configNotifier.HelpURL, 49 | Signature: configNotifier.EmailSignature, 50 | }) 51 | } 52 | 53 | func sendNotificationEmail(ctx context.Context, to string, body string) error { 54 | sesInput := &ses.SendEmailInput{ 55 | Source: aws.String(configNotifier.EmailFrom), 56 | Destination: &ses.Destination{ 57 | ToAddresses: aws.StringSlice([]string{to}), 58 | }, 59 | Message: &ses.Message{ 60 | Subject: &ses.Content{ 61 | Data: aws.String(configNotifier.EmailSubject), 62 | Charset: aws.String("UTF-8"), 63 | }, 64 | Body: &ses.Body{ 65 | Text: &ses.Content{ 66 | Data: aws.String(body), 67 | Charset: aws.String("UTF-8"), 68 | }, 69 | }, 70 | }, 71 | } 72 | 73 | if configNotifier.EmailSourceArn != "" { 74 | sesInput.SourceArn = aws.String(configNotifier.EmailSourceArn) 75 | } 76 | 77 | r, err := sesClient.SendEmailWithContext(ctx, sesInput) 78 | if err != nil { 79 | return errors.Wrap(err, "sending message with SES") 80 | } 81 | 82 | log.Infof("Sent message to %s with ID %s", to, aws.StringValue(r.MessageId)) 83 | return nil 84 | } 85 | 86 | func handler(ctx context.Context) error { 87 | certs, err := awsPKI.ListCerts(ctx, "") 88 | if err != nil { 89 | log.WithError(err).Error("Error listing certificates") 90 | return err 91 | } 92 | 93 | cutoffTime := time.Now().Add(time.Hour * 24 * time.Duration(configNotifier.DaysBefore)).UTC() 94 | log.Debugf("Sending notifications to users with certs expiring before %s", cutoffTime.Format(time.RFC3339)) 95 | 96 | targets := make(map[string][]*pki.CertificateInfo) 97 | for _, cert := range certs { 98 | if cert.Revoked != nil { 99 | continue 100 | } 101 | 102 | if cert.NotAfter.Before(cutoffTime) { 103 | targets[cert.Subject] = append(targets[cert.Subject], cert) 104 | } 105 | } 106 | 107 | for to, certs := range targets { 108 | var body bytes.Buffer 109 | if err := getEmailBody(&body, certs); err != nil { 110 | log.WithError(err).Error("Error building email body from template") 111 | continue 112 | } 113 | 114 | if err := sendNotificationEmail(ctx, to, body.String()); err != nil { 115 | log.WithError(err).Error("Error sending email") 116 | continue 117 | } 118 | } 119 | 120 | log.Infof("Sent %d notification emails", len(targets)) 121 | return nil 122 | } 123 | 124 | func main() { 125 | lambda.Start(handler) 126 | } 127 | -------------------------------------------------------------------------------- /cmd/lambda-revocation-notifier/template.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "text/template" 5 | 6 | "github.com/empathybroker/aws-vpn/pkg/pki" 7 | ) 8 | 9 | const bodyTemplate = `Hi, 10 | 11 | The following VPN certificates are approaching their expiration time: 12 | {{ range .Certificates }} 13 | * {{ .Serial }} expires on {{ (.NotAfter.Format "02/01/2006 15:04 MST") }} 14 | {{- end }} 15 | 16 | Make sure you request new certificates before then, or you will be unable to connect to the VPN. 17 | 18 | You can manage your certificates at {{ .AdminURL }} 19 | 20 | If you have any questions or need support, please visit {{ .HelpURL }} 21 | 22 | If you are receiving this email in error, please contact us. 23 | 24 | Regards, 25 | - {{ .Signature }}` 26 | 27 | var tplEmail = template.Must(template.New("email_body").Parse(bodyTemplate)) 28 | 29 | type bodyData struct { 30 | Certificates []*pki.CertificateInfo 31 | 32 | AdminURL string 33 | HelpURL string 34 | Signature string 35 | } 36 | -------------------------------------------------------------------------------- /cmd/lambda-rotate-ca/main.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "context" 5 | "encoding/json" 6 | "os" 7 | "time" 8 | 9 | "github.com/aws/aws-lambda-go/lambda" 10 | "github.com/aws/aws-sdk-go/aws" 11 | "github.com/aws/aws-sdk-go/aws/awserr" 12 | "github.com/aws/aws-sdk-go/aws/session" 13 | "github.com/aws/aws-sdk-go/service/secretsmanager" 14 | "github.com/empathybroker/aws-vpn/pkg/pki" 15 | "github.com/pkg/errors" 16 | log "github.com/sirupsen/logrus" 17 | ) 18 | 19 | var ( 20 | sess = session.Must(session.NewSession()) 21 | secrets = secretsmanager.New(sess) 22 | ) 23 | 24 | const ( 25 | kStepCreate = "createSecret" 26 | kStepSet = "setSecret" 27 | kStepTest = "testSecret" 28 | kStepFinish = "finishSecret" 29 | 30 | kStageCurrent = "AWSCURRENT" 31 | kStagePending = "AWSPENDING" 32 | 33 | kCAValidity = 90 * 24 * time.Hour 34 | ) 35 | 36 | type SecretRotationEvent struct { 37 | ClientRequestToken string `json:"ClientRequestToken"` 38 | 39 | SecretId string `json:"SecretId"` 40 | Step string `json:"Step"` 41 | } 42 | 43 | func init() { 44 | if os.Getenv("DEBUG") == "true" { 45 | log.SetLevel(log.DebugLevel) 46 | } 47 | log.SetFormatter(&log.JSONFormatter{ 48 | TimestampFormat: time.RFC3339Nano, 49 | FieldMap: log.FieldMap{ 50 | log.FieldKeyTime: "@timestamp", 51 | }, 52 | }) 53 | } 54 | 55 | func renewCAKey(ctx context.Context, secretId string, caName string, serialNumber string) (pki.CAData, error) { 56 | res, err := secrets.GetSecretValueWithContext(ctx, &secretsmanager.GetSecretValueInput{ 57 | SecretId: aws.String(secretId), 58 | VersionStage: aws.String(kStageCurrent), 59 | }) 60 | if err != nil { 61 | if awsErr, ok := err.(awserr.Error); ok { 62 | if awsErr.Code() == secretsmanager.ErrCodeResourceNotFoundException { 63 | log.Warnf("Secret is empty. Generating new CA Key") 64 | 65 | return pki.NewCAKey(caName, serialNumber, kCAValidity) 66 | } 67 | } else { 68 | return pki.CAData{}, errors.Wrap(err, "obtaining current key") 69 | } 70 | } 71 | 72 | var oldCA *pki.CAData 73 | if err := json.Unmarshal(res.SecretBinary, &oldCA); err != nil { 74 | log.WithError(err).Errorf("Error unmarshalling current key. New key will not be cross-signed") 75 | 76 | return pki.NewCAKey(caName, serialNumber, kCAValidity) 77 | } 78 | 79 | return oldCA.Renew(caName, serialNumber, kCAValidity) 80 | } 81 | 82 | func Handler(ctx context.Context, event SecretRotationEvent) error { 83 | log.WithFields(log.Fields{ 84 | "token": event.ClientRequestToken, 85 | "secret": event.SecretId, 86 | "step": event.Step, 87 | }).Info("Doing rotation step") 88 | 89 | switch event.Step { 90 | case kStepCreate: 91 | caName := os.Getenv("PKI_CA_NAME") 92 | if caName == "" { 93 | return errors.New("Missing environment variable PKI_CA_NAME") 94 | } 95 | 96 | newCA, err := renewCAKey(ctx, event.SecretId, caName, event.ClientRequestToken) 97 | if err != nil { 98 | return errors.Wrap(err, "renewing CA key") 99 | } 100 | 101 | keyData, err := newCA.MarshalJSON() 102 | if err != nil { 103 | return errors.Wrap(err, "encoding new key") 104 | } 105 | 106 | res, err := secrets.PutSecretValueWithContext(ctx, &secretsmanager.PutSecretValueInput{ 107 | ClientRequestToken: aws.String(event.ClientRequestToken), 108 | SecretId: aws.String(event.SecretId), 109 | SecretBinary: keyData, 110 | VersionStages: aws.StringSlice([]string{kStagePending}), 111 | }) 112 | if err != nil { 113 | if awsErr, ok := err.(awserr.Error); ok { 114 | if awsErr.Code() == secretsmanager.ErrCodeResourceExistsException { 115 | log.Infof("Key already exists. Could be a retry. Skipping error") 116 | return nil 117 | } 118 | } 119 | return errors.Wrap(err, "writing new key") 120 | } 121 | 122 | log.Infof("Created new CA key with version ID %s", aws.StringValue(res.VersionId)) 123 | case kStepSet: 124 | // Do nothing 125 | case kStepTest: 126 | // TODO 127 | case kStepFinish: 128 | secretInfo, err := secrets.DescribeSecretWithContext(ctx, &secretsmanager.DescribeSecretInput{ 129 | SecretId: aws.String(event.SecretId), 130 | }) 131 | if err != nil { 132 | return errors.Wrap(err, "obtaining secret details") 133 | } 134 | 135 | var currentVersion string 136 | for versionId, stages := range secretInfo.VersionIdsToStages { 137 | for _, stage := range aws.StringValueSlice(stages) { 138 | if stage == kStageCurrent { 139 | currentVersion = versionId 140 | } 141 | } 142 | } 143 | 144 | _, err = secrets.UpdateSecretVersionStageWithContext(ctx, &secretsmanager.UpdateSecretVersionStageInput{ 145 | SecretId: aws.String(event.SecretId), 146 | RemoveFromVersionId: aws.String(currentVersion), 147 | MoveToVersionId: aws.String(event.ClientRequestToken), 148 | VersionStage: aws.String(kStageCurrent), 149 | }) 150 | if err != nil { 151 | return errors.Wrap(err, "error updating secret stage") 152 | } 153 | 154 | log.Info("CA rekeying finished") 155 | default: 156 | log.Errorf("Unknown step: %s", event.Step) 157 | } 158 | 159 | return nil 160 | } 161 | 162 | func main() { 163 | lambda.Start(Handler) 164 | } 165 | -------------------------------------------------------------------------------- /cmd/ovpn-helper/main.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "bytes" 5 | "context" 6 | "fmt" 7 | "io/ioutil" 8 | "net/http" 9 | "os" 10 | "strconv" 11 | 12 | "github.com/empathybroker/aws-vpn/pkg/pki" 13 | log "github.com/sirupsen/logrus" 14 | jose "gopkg.in/square/go-jose.v2" 15 | ) 16 | 17 | const ( 18 | kConfigLocationEnv = "OPENVPN_CONFIG_FILE" 19 | kServiceUnitEnv = "OPENVPN_SERVICE_UNIT" 20 | ) 21 | 22 | func init() { 23 | log.SetFormatter(&log.TextFormatter{ 24 | DisableTimestamp: true, 25 | DisableColors: true, 26 | }) 27 | 28 | if verb, ok := os.LookupEnv("verb"); ok { 29 | if verb, err := strconv.Atoi(verb); err != nil && verb > 3 { 30 | log.SetLevel(log.DebugLevel) 31 | } 32 | } 33 | } 34 | 35 | func getServerConfig(ctx context.Context) { 36 | log.Debugf("Fetching server certificate") 37 | 38 | configFileName, ok := os.LookupEnv(kConfigLocationEnv) 39 | if !ok { 40 | log.Fatalf("Missing %s environment variable", kConfigLocationEnv) 41 | } 42 | 43 | privKey, err := pki.NewPrivateKey() 44 | if err != nil { 45 | log.WithError(err).Fatal("error generating key") 46 | } 47 | 48 | params := map[string]interface{}{ 49 | "publicKey": jose.JSONWebKey{Key: pki.GetPublicKey(privKey)}, 50 | } 51 | 52 | var result struct { 53 | Message string `json:"message"` 54 | Config []byte `json:"config"` 55 | } 56 | 57 | status, err := apiRequest(ctx, http.MethodPost, "/server/config", params, &result) 58 | if err != nil { 59 | log.WithError(err).Fatalf("Error making service call") 60 | } 61 | 62 | if status != http.StatusOK { 63 | log.WithField("status", strconv.Itoa(status)).Fatalf("HTTP error: %s", result.Message) 64 | } 65 | 66 | encodedKey, err := pki.EncodePEMPrivateKey(privKey) 67 | if err != nil { 68 | log.WithError(err).Fatal("Error encoding private key") 69 | } 70 | 71 | configData := bytes.ReplaceAll(result.Config, []byte("%PRIVATEKEY%"), encodedKey) 72 | if err := ioutil.WriteFile(configFileName, configData, 0600); err != nil { 73 | log.WithError(err).Fatal("Could not save new configuration file") 74 | } 75 | 76 | if serviceUnit, ok := os.LookupEnv(kServiceUnitEnv); ok { 77 | if err := restartService(ctx, serviceUnit); err != nil { 78 | log.WithError(err).Fatal("Error restarting OpenVPN service") 79 | } 80 | } 81 | 82 | log.Exit(0) 83 | } 84 | 85 | func tlsVerify(ctx context.Context) { 86 | if len(os.Args) != 3 { 87 | log.Fatalf("Invalid arguments") 88 | } 89 | 90 | pathLength, err := strconv.Atoi(os.Args[1]) 91 | if err != nil { 92 | log.WithError(err).Fatal("Fist parameter must be a number") 93 | } 94 | 95 | if pathLength > 2 { 96 | log.Fatalf("Certificate path length is too high (got %d, expected <= 2)", pathLength) 97 | } 98 | 99 | if pathLength != 0 { 100 | // We want to wait for the leaf cert 101 | log.Exit(0) 102 | } 103 | 104 | log.Debugf("Validating certificate for %s", os.Args[2]) 105 | 106 | params := map[string]interface{}{ 107 | "subject": os.Args[2], 108 | "untrusted_ip": os.Getenv("untrusted_ip"), 109 | 110 | "serial": hexFromEnv("tls_serial_hex_0"), 111 | "digest": hexFromEnv("tls_digest_sha256_0"), 112 | } 113 | 114 | var result struct { 115 | Message string `json:"message"` 116 | } 117 | 118 | status, err := apiRequest(ctx, http.MethodPost, "/server/verify", params, &result) 119 | if err != nil { 120 | log.WithError(err).Fatalf("Error making service call") 121 | } 122 | 123 | if status != http.StatusOK { 124 | log.WithField("status", strconv.Itoa(status)).Fatalf("HTTP error: %s", result.Message) 125 | } 126 | 127 | log.Debugf("Certificate validation successful!") 128 | log.Exit(0) 129 | } 130 | 131 | func clientConnect(ctx context.Context) { 132 | if len(os.Args) != 2 { 133 | log.Fatalf("Invalid arguments") 134 | } 135 | 136 | params := map[string]interface{}{ 137 | "common_name": os.Getenv("common_name"), 138 | "trusted_ip": os.Getenv("trusted_ip"), 139 | 140 | "client_hwaddr": os.Getenv("IV_HWADDR"), 141 | "client_platform": os.Getenv("IV_PLAT"), 142 | "client_version": os.Getenv("IV_VER"), 143 | "client_gui": os.Getenv("IV_GUI"), 144 | "client_ssl": os.Getenv("IV_SSL"), 145 | } 146 | 147 | var result struct { 148 | Message string `json:"message"` 149 | Push []string `json:"push"` 150 | } 151 | 152 | status, err := apiRequest(ctx, http.MethodPost, "/server/connect", params, &result) 153 | if err != nil { 154 | log.WithError(err).Fatalf("Error making service call") 155 | } 156 | 157 | if status != http.StatusOK { 158 | log.WithField("status", strconv.Itoa(status)).Fatalf("HTTP error: %s", result.Message) 159 | } 160 | 161 | var configData bytes.Buffer 162 | for _, p := range result.Push { 163 | if _, err := fmt.Fprintf(&configData, "push \"%s\"\n", p); err != nil { 164 | log.WithError(err).Fatal("Error writing config data") 165 | } 166 | } 167 | 168 | if err := ioutil.WriteFile(os.Args[1], configData.Bytes(), 0600); err != nil { 169 | log.WithError(err).Fatal("Could not save client configuration file") 170 | } 171 | 172 | log.Exit(0) 173 | } 174 | 175 | func clientDisconnect(ctx context.Context) { 176 | if len(os.Args) != 1 { 177 | log.Fatalf("Invalid arguments") 178 | } 179 | 180 | params := map[string]interface{}{ 181 | "common_name": os.Getenv("common_name"), 182 | "trusted_ip": os.Getenv("trusted_ip"), 183 | 184 | "duration": intFromEnv("time_duration"), 185 | "bytes_sent": intFromEnv("bytes_sent"), 186 | "bytes_received": intFromEnv("bytes_received"), 187 | 188 | "client_hwaddr": os.Getenv("IV_HWADDR"), 189 | "client_platform": os.Getenv("IV_PLAT"), 190 | "client_version": os.Getenv("IV_VER"), 191 | "client_gui": os.Getenv("IV_GUI"), 192 | "client_ssl": os.Getenv("IV_SSL"), 193 | } 194 | 195 | var result struct { 196 | Message string `json:"message"` 197 | Push []string `json:"push"` 198 | } 199 | 200 | status, err := apiRequest(ctx, http.MethodPost, "/server/disconnect", params, &result) 201 | if err != nil { 202 | log.WithError(err).Fatalf("Error making service call") 203 | } 204 | 205 | if status != http.StatusOK { 206 | log.WithField("status", strconv.Itoa(status)).Fatalf("HTTP error: %s", result.Message) 207 | } 208 | 209 | log.Exit(0) 210 | } 211 | 212 | func main() { 213 | ctx := context.Background() 214 | 215 | if scriptType, ok := os.LookupEnv("script_type"); ok { 216 | switch scriptType { 217 | case "tls-verify": 218 | tlsVerify(ctx) 219 | case "client-connect": 220 | clientConnect(ctx) 221 | case "client-disconnect": 222 | clientDisconnect(ctx) 223 | default: 224 | log.Fatalf("Unknown script_type: %s", scriptType) 225 | } 226 | log.Exit(1) 227 | } 228 | 229 | if len(os.Args) < 2 { 230 | log.Fatalf("Invalid arguments") 231 | } 232 | 233 | switch os.Args[1] { 234 | case "getconfig": 235 | getServerConfig(ctx) 236 | default: 237 | log.Fatalf("Unknown command %s", os.Args[1]) 238 | } 239 | 240 | log.Exit(1) 241 | } 242 | -------------------------------------------------------------------------------- /cmd/ovpn-helper/utils.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "bytes" 5 | "context" 6 | "encoding/json" 7 | "fmt" 8 | "net/http" 9 | "os" 10 | "strconv" 11 | "strings" 12 | "time" 13 | 14 | "github.com/aws/aws-sdk-go/aws/session" 15 | "github.com/coreos/go-systemd/dbus" 16 | awsservices "github.com/empathybroker/aws-vpn/pkg/aws" 17 | "github.com/pkg/errors" 18 | log "github.com/sirupsen/logrus" 19 | "golang.org/x/net/context/ctxhttp" 20 | ) 21 | 22 | const ( 23 | kJsonContentType = "application/json" 24 | ) 25 | 26 | var ( 27 | sess = session.Must(session.NewSession()) 28 | client = &http.Client{ 29 | Transport: awsservices.NewAWSSigner(sess, "execute-api", http.DefaultTransport), 30 | Timeout: 10 * time.Second, 31 | } 32 | 33 | apiBase = os.Getenv("PKI_API_ENDPOINT") 34 | ) 35 | 36 | func init() { 37 | if !strings.HasPrefix(apiBase, "https://") { 38 | log.Fatalf("Missing or incorrect PKI_API_ENDPOINT environment variable") 39 | } 40 | } 41 | 42 | func hexFromEnv(key string) string { 43 | return strings.ReplaceAll(os.Getenv(key), ":", "") 44 | } 45 | 46 | func intFromEnv(key string) int { 47 | val, err := strconv.Atoi(os.Getenv(key)) 48 | if err != nil { 49 | log.WithError(err).Errorf("Error decoding env int: %s=%s", key, os.Getenv(key)) 50 | } 51 | return val 52 | } 53 | 54 | func apiRequest(ctx context.Context, method string, url string, params map[string]interface{}, result interface{}) (int, error) { 55 | var body bytes.Buffer 56 | if params != nil { 57 | if err := json.NewEncoder(&body).Encode(params); err != nil { 58 | return 0, errors.Wrap(err, "could not marshal request") 59 | } 60 | } 61 | 62 | req, err := http.NewRequest(method, apiBase+url, &body) 63 | req.Header.Set("Content-Type", kJsonContentType) 64 | 65 | res, err := ctxhttp.Do(ctx, client, req) 66 | if err != nil { 67 | return 0, errors.Wrapf(err, "error querying service %s", url) 68 | } 69 | defer res.Body.Close() 70 | 71 | if result != nil { 72 | if err := json.NewDecoder(res.Body).Decode(&result); err != nil { 73 | return res.StatusCode, errors.Wrap(err, "error unmarshaling response") 74 | } 75 | } 76 | 77 | return res.StatusCode, nil 78 | } 79 | 80 | func restartService(ctx context.Context, unit string) error { 81 | ctx, _ = context.WithTimeout(ctx, 30*time.Second) 82 | 83 | conn, err := dbus.NewSystemConnection() 84 | if err != nil { 85 | return err 86 | } 87 | defer conn.Close() 88 | 89 | ch := make(chan string) 90 | if _, err := conn.ReloadOrRestartUnit(unit, "replace", ch); err != nil { 91 | return err 92 | } 93 | 94 | select { 95 | case result := <-ch: 96 | switch result { 97 | case "done", "skipped": 98 | log.Debugf("Reloaded service %s", unit) 99 | return nil 100 | default: 101 | return fmt.Errorf("error reloading: %s", result) 102 | } 103 | case <-ctx.Done(): 104 | return ctx.Err() 105 | } 106 | 107 | return nil 108 | } 109 | -------------------------------------------------------------------------------- /frontend/.env: -------------------------------------------------------------------------------- 1 | VUE_APP_NAME=My VPN 2 | VUE_APP_KEY_TYPE=RSA 3 | VUE_APP_GOOGLE_CLIENT_ID= 4 | VUE_APP_GOOGLE_HOSTED_DOMAIN= 5 | -------------------------------------------------------------------------------- /frontend/.eslintrc.js: -------------------------------------------------------------------------------- 1 | module.exports = { 2 | root: true, 3 | env: { 4 | node: true 5 | }, 6 | 'extends': [ 7 | 'eslint:recommended', 8 | 'plugin:vue/recommended', 9 | '@vue/standard' 10 | ], 11 | rules: { 12 | 'no-console': process.env.NODE_ENV === 'production' ? 'warn' : 'off', 13 | 'no-debugger': process.env.NODE_ENV === 'production' ? 'error' : 'off' 14 | }, 15 | parserOptions: { 16 | parser: 'babel-eslint' 17 | } 18 | }; 19 | -------------------------------------------------------------------------------- /frontend/.gitignore: -------------------------------------------------------------------------------- 1 | .DS_Store 2 | node_modules 3 | /dist 4 | 5 | # local env files 6 | .env.local 7 | .env.*.local 8 | 9 | # Log files 10 | npm-debug.log* 11 | yarn-debug.log* 12 | yarn-error.log* 13 | 14 | # Editor directories and files 15 | .idea 16 | .vscode 17 | *.suo 18 | *.ntvs* 19 | *.njsproj 20 | *.sln 21 | *.sw* 22 | -------------------------------------------------------------------------------- /frontend/.postcssrc.js: -------------------------------------------------------------------------------- 1 | module.exports = { 2 | plugins: { 3 | autoprefixer: {} 4 | } 5 | } -------------------------------------------------------------------------------- /frontend/babel.config.js: -------------------------------------------------------------------------------- 1 | module.exports = { 2 | presets: [ 3 | '@vue/app' 4 | ] 5 | } 6 | -------------------------------------------------------------------------------- /frontend/package.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "vpnadmin", 3 | "version": "0.1.0", 4 | "private": true, 5 | "scripts": { 6 | "serve": "vue-cli-service serve", 7 | "build": "vue-cli-service build", 8 | "lint": "vue-cli-service lint" 9 | }, 10 | "dependencies": { 11 | "axios": "^0.19.0", 12 | "date-fns": "^1.30.1", 13 | "deepmerge": "^4.0.0", 14 | "fibers": "^4.0.1", 15 | "vue": "^2.6.10", 16 | "vue-router": "^3.1.2", 17 | "vuetify": "^2.0.5", 18 | "vuex": "^3.1.1" 19 | }, 20 | "devDependencies": { 21 | "@mdi/js": "^3.9.97", 22 | "@vue/cli-plugin-babel": "^3.10.0", 23 | "@vue/cli-plugin-eslint": "^3.10.0", 24 | "@vue/cli-service": "^3.10.0", 25 | "@vue/eslint-config-standard": "^4.0.0", 26 | "babel-eslint": "^10.0.2", 27 | "eslint": "^5.16.0", 28 | "eslint-plugin-vue": "^5.2.3", 29 | "sass": "^1.22.9", 30 | "sass-loader": "^7.2.0", 31 | "vue-cli-plugin-vuetify": "^0.6.3", 32 | "vue-template-compiler": "^2.6.10", 33 | "vuetify-loader": "^1.3.0", 34 | "webpack-bundle-analyzer": "^3.4.1" 35 | }, 36 | "browserslist": [ 37 | "defaults", 38 | "not dead and > 1%", 39 | "not ie <= 12" 40 | ] 41 | } 42 | -------------------------------------------------------------------------------- /frontend/public/_errors/403.html: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/empathyco/platform-aws-vpn/0902aac392cb5fe028f1e3c7abc0515c9a481e4f/frontend/public/_errors/403.html -------------------------------------------------------------------------------- /frontend/public/favicon.ico: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/empathyco/platform-aws-vpn/0902aac392cb5fe028f1e3c7abc0515c9a481e4f/frontend/public/favicon.ico -------------------------------------------------------------------------------- /frontend/public/favicon.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/empathyco/platform-aws-vpn/0902aac392cb5fe028f1e3c7abc0515c9a481e4f/frontend/public/favicon.png -------------------------------------------------------------------------------- /frontend/public/index.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | <%= VUE_APP_NAME %> 11 | 12 | 13 | 16 |
17 | 18 | 19 | 20 | -------------------------------------------------------------------------------- /frontend/public/robots.txt: -------------------------------------------------------------------------------- 1 | User-Agent: * 2 | Disallow: / 3 | -------------------------------------------------------------------------------- /frontend/src/App.vue: -------------------------------------------------------------------------------- 1 | 20 | 21 | 35 | -------------------------------------------------------------------------------- /frontend/src/api/index.js: -------------------------------------------------------------------------------- 1 | import axios from 'axios' 2 | import store from '../store' 3 | 4 | let _api = axios.create({ 5 | baseURL: '/api/client' 6 | }) 7 | 8 | _api.interceptors.request.use((config) => { 9 | let idToken = store.state.gAuth.id_token 10 | if (idToken) { 11 | config.headers.common['Authorization'] = 'Bearer ' + idToken 12 | } else { 13 | delete config.headers.common['Authorization'] 14 | } 15 | 16 | return config 17 | }) 18 | 19 | export default { 20 | getCerts (allUsers) { 21 | let config = {} 22 | if (allUsers) { 23 | config.params = { 'all': allUsers } 24 | } 25 | return _api.get('/certificates', config) 26 | }, 27 | newCert (publicKey) { 28 | return _api.put('/certificates', { 'publicKey': publicKey }) 29 | }, 30 | revokeCert (serial) { 31 | return _api.delete('/certificates/' + serial) 32 | } 33 | } 34 | -------------------------------------------------------------------------------- /frontend/src/components/CertificateList.vue: -------------------------------------------------------------------------------- 1 | 192 | 193 | 256 | -------------------------------------------------------------------------------- /frontend/src/components/GoogleLogin.vue: -------------------------------------------------------------------------------- 1 | 52 | 53 | 71 | 72 | 73 | 81 | -------------------------------------------------------------------------------- /frontend/src/main.js: -------------------------------------------------------------------------------- 1 | import Vue from 'vue' 2 | import App from './App.vue' 3 | import vuetify from './plugins/vuetify' 4 | import router from './router' 5 | import store from './store' 6 | 7 | Vue.config.productionTip = false 8 | 9 | new Vue({ 10 | vuetify, 11 | router, 12 | store, 13 | render: h => h(App) 14 | }).$mount('#app') 15 | -------------------------------------------------------------------------------- /frontend/src/plugins/vuetify.js: -------------------------------------------------------------------------------- 1 | import Vue from 'vue' 2 | import Vuetify from 'vuetify/lib' 3 | import { 4 | mdiAccountCircleOutline, 5 | mdiCancel, 6 | mdiCertificate, mdiClose, 7 | mdiRefresh, 8 | mdiShieldAccountOutline, mdiShieldOffOutline, 9 | mdiTableSearch 10 | } from '@mdi/js' 11 | 12 | Vue.use(Vuetify) 13 | 14 | export default new Vuetify({ 15 | icons: { 16 | iconfont: 'mdiSvg', 17 | values: { 18 | account: mdiAccountCircleOutline, 19 | cancel: mdiCancel, 20 | certificate: mdiCertificate, 21 | close: mdiClose, 22 | refresh: mdiRefresh, 23 | revoke: mdiShieldOffOutline, 24 | search: mdiTableSearch, 25 | signIn: mdiShieldAccountOutline 26 | } 27 | } 28 | }) 29 | -------------------------------------------------------------------------------- /frontend/src/router.js: -------------------------------------------------------------------------------- 1 | import Vue from 'vue' 2 | import Router from 'vue-router' 3 | 4 | Vue.use(Router) 5 | 6 | export default new Router({ 7 | base: process.env.BASE_URL, 8 | mode: 'history', 9 | routes: [ 10 | { 11 | path: '/', 12 | name: 'home', 13 | component: () => import(/* webpackChunkName: "home" */ './views/Home') 14 | }, 15 | { 16 | path: '*', 17 | redirect: { 18 | name: 'home' 19 | } 20 | } 21 | ] 22 | }) 23 | -------------------------------------------------------------------------------- /frontend/src/store/index.js: -------------------------------------------------------------------------------- 1 | import Vue from 'vue' 2 | import Vuex from 'vuex' 3 | 4 | import gauth from './modules/gauth' 5 | import certs from './modules/certs' 6 | 7 | Vue.use(Vuex) 8 | 9 | const store = new Vuex.Store({ 10 | strict: process.env.NODE_ENV !== 'production', 11 | modules: { 12 | gAuth: gauth, 13 | certs: certs 14 | }, 15 | state: { 16 | alertType: 'error', 17 | alertMessage: '', 18 | alertVisible: false 19 | }, 20 | mutations: { 21 | alert: function (state, { alertType, alertMessage }) { 22 | state.alertType = alertType 23 | state.alertMessage = alertMessage 24 | state.alertVisible = true 25 | } 26 | }, 27 | actions: { 28 | async displayAlert ({ commit }, alertType, alertMessage) { 29 | await commit('alert', { alertType, alertMessage }) 30 | } 31 | } 32 | }) 33 | 34 | export default store 35 | -------------------------------------------------------------------------------- /frontend/src/store/modules/certs.js: -------------------------------------------------------------------------------- 1 | 2 | import api from '../../api' 3 | 4 | import { downloadFile } from '../../utils/download' 5 | import { newKeyPair, exportKeys } from '../../utils/crypto' 6 | 7 | const state = { 8 | certificates: [], 9 | isAdmin: false, 10 | isLoading: false, 11 | downloadedCert: false 12 | } 13 | 14 | const getters = {} 15 | 16 | const actions = { 17 | async updateCerts ({ state, commit }, showAllUsers) { 18 | await commit('setLoading', true) 19 | try { 20 | // TODO: error handling 21 | const r = await api.getCerts(showAllUsers) 22 | r.data.certs = r.data.certs.map(c => { 23 | c.notBefore = new Date(c.notBefore) 24 | c.notAfter = new Date(c.notAfter) 25 | 26 | c.isRevoked = c.revoked !== undefined 27 | if (c.isRevoked) { 28 | c.revoked = new Date(c.revoked) 29 | } 30 | return c 31 | }) 32 | await commit('setCertResponse', r.data) 33 | } catch (e) { 34 | console.error(e) 35 | } finally { 36 | await commit('setLoading', false) 37 | } 38 | }, 39 | async revokeCert ({ state, commit }, serial) { 40 | try { 41 | // TODO: error handling 42 | await api.revokeCert(serial) 43 | } catch (e) { 44 | console.error(e) 45 | } 46 | }, 47 | async getCert ({ state, commit }) { 48 | try { 49 | let keyPair = await newKeyPair() 50 | let jwks = await exportKeys(keyPair) 51 | 52 | let res = await api.newCert(jwks.public) 53 | let config = res.data.replace('%PRIVATEKEY%', jwks.private) 54 | let filename = res.headers['x-vpn-filename'] || `${process.env.VUE_APP_NAME}.ovpn` 55 | 56 | await downloadFile(filename, config, res.headers['content-type']) 57 | await commit('setDownloadedCert', true) 58 | } catch (e) { 59 | console.error(e) 60 | } 61 | }, 62 | async clear ({ state, commit }) { 63 | await commit('setCertResponse', { certs: [], isAdmin: false }) 64 | await commit('setLoading', false) 65 | } 66 | } 67 | 68 | const mutations = { 69 | setCertResponse (state, data) { 70 | state.certificates = data.certs 71 | state.isAdmin = data.isAdmin 72 | }, 73 | setDownloadedCert (state, downloadedCert) { 74 | state.downloadedCert = downloadedCert 75 | }, 76 | setLoading (state, isLoading) { 77 | state.isLoading = isLoading 78 | } 79 | } 80 | 81 | export default { 82 | namespaced: true, 83 | state, 84 | getters, 85 | actions, 86 | mutations 87 | } 88 | -------------------------------------------------------------------------------- /frontend/src/store/modules/gauth.js: -------------------------------------------------------------------------------- 1 | 2 | const state = { 3 | ready: false, 4 | signedIn: false, 5 | id_token: null, 6 | profile: null 7 | } 8 | 9 | const mutations = { 10 | updateUser: (state, user) => { 11 | state.ready = true 12 | if (user.isSignedIn()) { 13 | state.signedIn = true 14 | 15 | let authData = user.getAuthResponse() 16 | state.id_token = authData.id_token 17 | 18 | let profile = user.getBasicProfile() 19 | state.profile = { 20 | id: profile.getId(), 21 | email: profile.getEmail(), 22 | name: profile.getName(), 23 | image: profile.getImageUrl() 24 | } 25 | } else { 26 | state.signedIn = false 27 | state.id_token = null 28 | state.profile = null 29 | } 30 | } 31 | } 32 | 33 | const actions = { 34 | initAuth (state) { 35 | if (!window.gapi) { 36 | console.error('gapi not found') 37 | return 38 | } 39 | window.gapi.load('auth2', () => { 40 | window.gapi.auth2.init({ 41 | client_id: process.env.VUE_APP_GOOGLE_CLIENT_ID, 42 | hosted_domain: process.env.VUE_APP_GOOGLE_HOSTED_DOMAIN 43 | }).then(auth2 => { 44 | state.commit('updateUser', auth2.currentUser.get()) 45 | auth2.currentUser.listen(user => { 46 | state.commit('updateUser', user) 47 | }) 48 | }).catch(err => console.error('error on gauth init', err)) 49 | }) 50 | }, 51 | async signIn () { 52 | try { 53 | let auth = window.gapi.auth2.getAuthInstance() 54 | await auth.signIn() 55 | console.debug('User signed in') 56 | } catch (e) { 57 | console.error(e) 58 | } 59 | }, 60 | async signOut () { 61 | try { 62 | let auth = window.gapi.auth2.getAuthInstance() 63 | await auth.signOut() 64 | auth.disconnect() 65 | console.debug('User signed out') 66 | } catch (e) { 67 | console.error(e) 68 | } 69 | } 70 | } 71 | 72 | export default { 73 | namespaced: true, 74 | state, 75 | actions, 76 | mutations 77 | } 78 | -------------------------------------------------------------------------------- /frontend/src/utils/crypto.js: -------------------------------------------------------------------------------- 1 | 2 | function encodePEM (pemType, ab) { 3 | let b64Encoded = btoa(String.fromCharCode(...new Uint8Array(ab))) 4 | let pemEncoded = b64Encoded.match(/.{1,64}/g).join('\n') + '='.repeat(b64Encoded.length % 4) 5 | return `-----BEGIN ${pemType}-----\n${pemEncoded}\n-----END ${pemType}-----\n` 6 | } 7 | 8 | export async function newKeyPair () { 9 | let keyParams 10 | switch (process.env.VUE_APP_KEY_TYPE) { 11 | case 'RSA': 12 | keyParams = { name: 'RSA-PSS', modulusLength: 2048, publicExponent: new Uint8Array([1, 0, 1]), hash: 'SHA-256' } 13 | break 14 | case 'EC': 15 | keyParams = { name: 'ECDSA', namedCurve: 'P-256' } 16 | break 17 | default: 18 | throw Error('invalid Key Type: ' + process.env.VUE_APP_KEY_TYPE) 19 | } 20 | 21 | return window.crypto.subtle.generateKey(keyParams, true, ['sign', 'verify']) 22 | } 23 | 24 | export async function exportKeys (keyPair) { 25 | let publicKey = await window.crypto.subtle.exportKey('jwk', keyPair.publicKey) 26 | let privateKey = await window.crypto.subtle.exportKey('pkcs8', keyPair.privateKey) 27 | 28 | return { 'public': publicKey, 'private': encodePEM(publicKey.kty + ' PRIVATE KEY', privateKey) } 29 | } 30 | -------------------------------------------------------------------------------- /frontend/src/utils/download.js: -------------------------------------------------------------------------------- 1 | 2 | export function downloadFile (filename, contents, type) { 3 | let blob = new Blob([contents], { 'type': type }) 4 | let href = URL.createObjectURL(blob) 5 | 6 | let el = document.createElement('a') 7 | el.setAttribute('href', href) 8 | el.setAttribute('download', filename) 9 | el.click() 10 | setTimeout(() => { 11 | URL.revokeObjectURL(href) 12 | el.remove() 13 | }, 0) 14 | } 15 | -------------------------------------------------------------------------------- /frontend/src/views/Home.vue: -------------------------------------------------------------------------------- 1 | 38 | 39 | 57 | -------------------------------------------------------------------------------- /frontend/vue.config.js: -------------------------------------------------------------------------------- 1 | 2 | const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin 3 | 4 | module.exports = { 5 | configureWebpack: { 6 | plugins: [ 7 | new BundleAnalyzerPlugin({ analyzerMode: 'static', openAnalyzer: false }) 8 | ] 9 | }, 10 | devServer: { 11 | proxy: { 12 | '/api': { 13 | target: 'https://replace-me-with-your-vpn-endpoint/api', 14 | changeOrigin: true, 15 | pathRewrite: { 16 | '^/api': '' 17 | } 18 | } 19 | } 20 | } 21 | } 22 | -------------------------------------------------------------------------------- /go.mod: -------------------------------------------------------------------------------- 1 | module github.com/empathybroker/aws-vpn 2 | 3 | require ( 4 | cloud.google.com/go v0.36.0 // indirect 5 | github.com/DATA-DOG/go-sqlmock v1.3.3 // indirect 6 | github.com/aws/aws-lambda-go v1.9.0 7 | github.com/aws/aws-sdk-go v1.17.12 8 | github.com/aws/aws-xray-sdk-go v1.0.0-rc.9.0.20190219213013-12231bd5f588 9 | github.com/awslabs/aws-lambda-go-api-proxy v0.2.0 10 | github.com/coreos/go-systemd v0.0.0-20190212144455-93d5ec2c7f76 11 | github.com/godbus/dbus v0.0.0-20181101234600-2ff6f7ffd60f // indirect 12 | github.com/golang/protobuf v1.3.0 // indirect 13 | github.com/google/uuid v1.1.1 14 | github.com/gorilla/mux v1.7.0 15 | github.com/kelseyhightower/envconfig v1.3.0 16 | github.com/konsorten/go-windows-terminal-sequences v1.0.2 // indirect 17 | github.com/onsi/ginkgo v1.7.0 // indirect 18 | github.com/onsi/gomega v1.4.3 // indirect 19 | github.com/pkg/errors v0.8.1 20 | github.com/sirupsen/logrus v1.3.0 21 | github.com/stretchr/testify v1.3.0 // indirect 22 | golang.org/x/crypto v0.0.0-20190228161510-8dd112bcdc25 // indirect 23 | golang.org/x/net v0.0.0-20190301231341-16b79f2e4e95 24 | golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421 25 | golang.org/x/sync v0.0.0-20190227155943-e225da77a7e6 // indirect 26 | golang.org/x/sys v0.0.0-20190306220723-b294cbcfc56d // indirect 27 | google.golang.org/api v0.1.0 28 | gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 // indirect 29 | gopkg.in/square/go-jose.v2 v2.3.0 30 | gopkg.in/yaml.v2 v2.2.2 // indirect 31 | ) 32 | -------------------------------------------------------------------------------- /go.sum: -------------------------------------------------------------------------------- 1 | cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= 2 | cloud.google.com/go v0.31.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= 3 | cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= 4 | cloud.google.com/go v0.36.0 h1:+aCSj7tOo2LODWVEuZDZeGCckdt6MlSF+X/rB3wUiS8= 5 | cloud.google.com/go v0.36.0/go.mod h1:RUoy9p/M4ge0HzT8L+SDZ8jg+Q6fth0CiBuhFJpSV40= 6 | dmitri.shuralyov.com/app/changes v0.0.0-20180602232624-0a106ad413e3/go.mod h1:Yl+fi1br7+Rr3LqpNJf1/uxUdtRUV+Tnj0o93V2B9MU= 7 | dmitri.shuralyov.com/html/belt v0.0.0-20180602232347-f7d459c86be0/go.mod h1:JLBrvjyP0v+ecvNYvCpyZgu5/xkfAUhi6wJj28eUfSU= 8 | dmitri.shuralyov.com/service/change v0.0.0-20181023043359-a85b471d5412/go.mod h1:a1inKt/atXimZ4Mv927x+r7UpyzRUf4emIoiiSC2TN4= 9 | dmitri.shuralyov.com/state v0.0.0-20180228185332-28bcc343414c/go.mod h1:0PRwlb0D6DFvNNtx+9ybjezNCa8XF0xaYcETyp6rHWU= 10 | git.apache.org/thrift.git v0.0.0-20180902110319-2566ecd5d999/go.mod h1:fPE2ZNJGynbRyZ4dJvy6G277gSllfV2HJqblrnkyeyg= 11 | github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= 12 | github.com/DATA-DOG/go-sqlmock v1.3.3 h1:CWUqKXe0s8A2z6qCgkP4Kru7wC11YoAnoupUKFDnH08= 13 | github.com/DATA-DOG/go-sqlmock v1.3.3/go.mod h1:f/Ixk793poVmq4qj/V1dPUg2JEAKC73Q5eFN3EC/SaM= 14 | github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239/go.mod h1:2FmKhYUyUczH0OGQWaF5ceTx0UBShxjsH6f8oGKYe2c= 15 | github.com/aws/aws-lambda-go v1.9.0 h1:r9TWtk8ozLYdMW+aelUeWny8z2mjghJCMx6/uUwOLNo= 16 | github.com/aws/aws-lambda-go v1.9.0/go.mod h1:zUsUQhAUjYzR8AuduJPCfhBuKWUaDbQiPOG+ouzmE1A= 17 | github.com/aws/aws-sdk-go v1.17.12 h1:jMFwRUaM0LcfdenfvbDLePNoWSoCdOHqF4RCvSB4xNQ= 18 | github.com/aws/aws-sdk-go v1.17.12/go.mod 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v0.0.0-20190111050920-041ab4dc3f9d/go.mod h1:OWs+y06UdEOHN4y+MfF/py+xQ/tYqIWW03b70/CG9Rw= 138 | golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4= 139 | golang.org/x/crypto v0.0.0-20181030102418-4d3f4d9ffa16/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4= 140 | golang.org/x/crypto v0.0.0-20190228161510-8dd112bcdc25 h1:jsG6UpNLt9iAsb0S2AGW28DveNzzgmbXR+ENoPjUeIU= 141 | golang.org/x/crypto v0.0.0-20190228161510-8dd112bcdc25/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w= 142 | golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA= 143 | golang.org/x/lint v0.0.0-20180702182130-06c8688daad7/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE= 144 | golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE= 145 | golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= 146 | golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= 147 | golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= 148 | golang.org/x/net v0.0.0-20181029044818-c44066c5c816/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= 149 | golang.org/x/net v0.0.0-20181106065722-10aee1819953/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= 150 | golang.org/x/net v0.0.0-20190108225652-1e06a53dbb7e/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= 151 | golang.org/x/net v0.0.0-20190301231341-16b79f2e4e95 h1:fY7Dsw114eJN4boqzVSbpVHO6rTdhq6/GnXeu+PKnzU= 152 | golang.org/x/net v0.0.0-20190301231341-16b79f2e4e95/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= 153 | golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U= 154 | golang.org/x/oauth2 v0.0.0-20181017192945-9dcd33a902f4/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U= 155 | golang.org/x/oauth2 v0.0.0-20181203162652-d668ce993890/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U= 156 | golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421 h1:Wo7BWFiOk0QRFMLYMqJGFMd9CgUAcGx7V+qEg/h5IBI= 157 | golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw= 158 | golang.org/x/perf v0.0.0-20180704124530-6e6d33e29852/go.mod h1:JLpeXjPJfIyPr5TlbXLkXWLhP8nz10XfvxElABhCtcw= 159 | golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= 160 | golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= 161 | golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4 h1:YUO/7uOKsKeq9UokNS62b8FYywz3ker1l1vDZRCRefw= 162 | golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= 163 | golang.org/x/sync v0.0.0-20190227155943-e225da77a7e6 h1:bjcUS9ztw9kFmmIxJInhon/0Is3p+EHBKNgquIzo1OI= 164 | golang.org/x/sync v0.0.0-20190227155943-e225da77a7e6/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= 165 | golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= 166 | golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= 167 | golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= 168 | golang.org/x/sys v0.0.0-20181029174526-d69651ed3497/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= 169 | golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= 170 | golang.org/x/sys v0.0.0-20190306220723-b294cbcfc56d h1:4Ew1XHJYjwX6RiE8SgSymqS1zCRQyGpcAnVfbpEuXfE= 171 | golang.org/x/sys v0.0.0-20190306220723-b294cbcfc56d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= 172 | golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ= 173 | golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2 h1:z99zHgr7hKfrUcX/KsoJk5FJfjTceCKIp96+biqP4To= 174 | golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ= 175 | golang.org/x/time v0.0.0-20180412165947-fbb02b2291d2/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ= 176 | golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ= 177 | golang.org/x/tools v0.0.0-20180828015842-6cd1fcedba52/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ= 178 | golang.org/x/tools v0.0.0-20181030000716-a0a13e073c7b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ= 179 | google.golang.org/api v0.0.0-20180910000450-7ca32eb868bf/go.mod h1:4mhQ8q/RsB7i+udVvVy5NUi08OU8ZlA0gRVgrF7VFY0= 180 | google.golang.org/api v0.0.0-20181030000543-1d582fd0359e/go.mod h1:4mhQ8q/RsB7i+udVvVy5NUi08OU8ZlA0gRVgrF7VFY0= 181 | google.golang.org/api v0.1.0 h1:K6z2u68e86TPdSdefXdzvXgR1zEMa+459vBSfWYAZkI= 182 | google.golang.org/api v0.1.0/go.mod h1:UGEZY7KEX120AnNLIHFMKIo4obdJhkp2tPbaPlQx13Y= 183 | google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM= 184 | google.golang.org/appengine v1.2.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4= 185 | google.golang.org/appengine v1.3.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4= 186 | google.golang.org/appengine v1.4.0 h1:/wp5JvzpHIxhs/dumFmF7BXTf3Z+dd4uXta4kVyO508= 187 | google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4= 188 | google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc= 189 | google.golang.org/genproto v0.0.0-20180831171423-11092d34479b/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc= 190 | google.golang.org/genproto v0.0.0-20181029155118-b69ba1387ce2/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc= 191 | google.golang.org/genproto v0.0.0-20181202183823-bd91e49a0898/go.mod h1:7Ep/1NZk928CDR8SjdVbjWNpdIf6nzjE3BTgJDr2Atg= 192 | google.golang.org/genproto v0.0.0-20190201180003-4b09977fb922/go.mod h1:L3J43x8/uS+qIUoksaLKe6OS3nUKxOKuIFz1sl2/jx4= 193 | google.golang.org/grpc v1.14.0/go.mod h1:yo6s7OP7yaDglbqo1J04qKzAhqBH6lvTonzMVmEdcZw= 194 | google.golang.org/grpc v1.16.0/go.mod h1:0JHn/cJsOMiMfNA9+DeHDlAU7KAAB5GDlYFpa9MZMio= 195 | google.golang.org/grpc v1.17.0/go.mod h1:6QZJwpn2B+Zp71q/5VxRsJ6NXXVCE5NRUHRo+f3cWCs= 196 | gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= 197 | gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY= 198 | gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= 199 | gopkg.in/fsnotify.v1 v1.4.7 h1:xOHLXZwVvI9hhs+cLKq5+I5onOuwQLhQwiu63xxlHs4= 200 | gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys= 201 | gopkg.in/inf.v0 v0.9.1/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw= 202 | gopkg.in/square/go-jose.v2 v2.3.0 h1:nLzhkFyl5bkblqYBoiWJUt5JkWOzmiaBtCxdJAqJd3U= 203 | gopkg.in/square/go-jose.v2 v2.3.0/go.mod h1:M9dMgbHiYLoDGQrXy7OpJDJWiKiU//h+vD76mk0e1AI= 204 | gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ= 205 | gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw= 206 | gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= 207 | gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw= 208 | gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= 209 | grpc.go4.org v0.0.0-20170609214715-11d0a25b4919/go.mod h1:77eQGdRu53HpSqPFJFmuJdjuHRquDANNeA4x7B8WQ9o= 210 | honnef.co/go/tools v0.0.0-20180728063816-88497007e858/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= 211 | honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= 212 | sourcegraph.com/sourcegraph/go-diff v0.5.0/go.mod h1:kuch7UrkMzY0X+p9CRK03kfuPQ2zzQcaEFbx8wA8rck= 213 | sourcegraph.com/sqs/pbtypes v0.0.0-20180604144634-d3ebe8f20ae4/go.mod h1:ketZ/q3QxT9HOBeFhu6RdvsftgpsbFHBF5Cas6cDKZ0= 214 | -------------------------------------------------------------------------------- /gomod.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | set -eu 3 | 4 | touch go.mod 5 | 6 | PROJECT_NAME=$(basename $(pwd | xargs dirname)) 7 | CURRENT_DIR=$(basename $(pwd)) 8 | 9 | CONTENT=$(cat <<-EOD 10 | module github.com/${PROJECT_NAME}/${CURRENT_DIR} 11 | 12 | require github.com/aws/aws-lambda-go v1.6.0 13 | EOD 14 | ) 15 | 16 | echo "$CONTENT" > go.mod 17 | -------------------------------------------------------------------------------- /pkg/api/client/api.go: -------------------------------------------------------------------------------- 1 | package clientapi 2 | 3 | import ( 4 | "net/http" 5 | 6 | "github.com/aws/aws-xray-sdk-go/xray" 7 | awsservices "github.com/empathybroker/aws-vpn/pkg/aws" 8 | "github.com/empathybroker/aws-vpn/pkg/pki" 9 | awspki "github.com/empathybroker/aws-vpn/pkg/pki/aws" 10 | "github.com/gorilla/mux" 11 | ) 12 | 13 | var ( 14 | pkiStorage = awspki.NewAWSStorage(awsservices.NewSecretsManagerClient(), awsservices.NewDynamoDBClient()) 15 | apiPKI = pki.NewPKI(pkiStorage) 16 | apiSNS = awsservices.NewSNSClient() 17 | ) 18 | 19 | func NewRouter() *mux.Router { 20 | r := mux.NewRouter() 21 | r.Use(func(handler http.Handler) http.Handler { 22 | return xray.Handler(xray.NewFixedSegmentNamer("vpn-api-client"), handler) 23 | }) 24 | 25 | r.HandleFunc("/certificates", apiGetCerts).Methods(http.MethodGet) 26 | r.HandleFunc("/certificates", apiNewCert).Methods(http.MethodPut) 27 | r.HandleFunc("/certificates/{serial}", apiGetCert).Methods(http.MethodGet) 28 | r.HandleFunc("/certificates/{serial}", apiRevokeCert).Methods(http.MethodDelete) 29 | 30 | return r 31 | } 32 | -------------------------------------------------------------------------------- /pkg/api/client/cert_delete.go: -------------------------------------------------------------------------------- 1 | package clientapi 2 | 3 | import ( 4 | "net/http" 5 | 6 | "github.com/empathybroker/aws-vpn/pkg/api" 7 | awsservices "github.com/empathybroker/aws-vpn/pkg/aws" 8 | "github.com/empathybroker/aws-vpn/pkg/pki" 9 | "github.com/gorilla/mux" 10 | log "github.com/sirupsen/logrus" 11 | ) 12 | 13 | func apiRevokeCert(w http.ResponseWriter, r *http.Request) { 14 | vars := mux.Vars(r) 15 | 16 | serial, err := pki.DecodeSerial(vars["serial"]) 17 | if err != nil { 18 | api.ErrorResponse(w, http.StatusBadRequest, err, "Invalid serial") 19 | return 20 | } 21 | 22 | _, userInfo, err := api.GetAPIGWPrincipal(r) 23 | if err != nil { 24 | api.ErrorResponse(w, http.StatusInternalServerError, err, "Error obtaining principal") 25 | return 26 | } 27 | 28 | cert, err := apiPKI.GetCertBySerial(r.Context(), serial) 29 | if err != nil { 30 | api.ErrorResponse(w, http.StatusInternalServerError, err, "Error obtaining certificate") 31 | return 32 | } 33 | 34 | if cert == nil || (!userInfo.IsAdmin && cert.Subject != userInfo.Email) { 35 | api.ErrorResponse(w, http.StatusNotFound, nil, "Not Found") 36 | return 37 | } 38 | 39 | cert, err = apiPKI.RevokeCert(r.Context(), serial) 40 | if err != nil { 41 | api.ErrorResponse(w, http.StatusInternalServerError, err, "Error revoking certificate") 42 | return 43 | } 44 | 45 | if cert == nil { 46 | api.ErrorResponse(w, http.StatusNotFound, nil, "Not found") 47 | return 48 | } 49 | 50 | event := api.J{ 51 | "event": "cert_revoked", 52 | "revoked_by": userInfo.Email, 53 | "cert": cert, 54 | } 55 | 56 | if err := awsservices.PublishEvent(apiSNS, r.Context(), event); err != nil { 57 | log.WithError(err).Error("Error publishing event") 58 | } 59 | 60 | api.JsonResponse(w, http.StatusOK, cert) 61 | } 62 | -------------------------------------------------------------------------------- /pkg/api/client/cert_get.go: -------------------------------------------------------------------------------- 1 | package clientapi 2 | 3 | import ( 4 | "net/http" 5 | 6 | "github.com/empathybroker/aws-vpn/pkg/api" 7 | 8 | "github.com/empathybroker/aws-vpn/pkg/pki" 9 | "github.com/gorilla/mux" 10 | ) 11 | 12 | func apiGetCert(w http.ResponseWriter, r *http.Request) { 13 | vars := mux.Vars(r) 14 | 15 | serial, err := pki.DecodeSerial(vars["serial"]) 16 | if err != nil { 17 | api.ErrorResponse(w, http.StatusBadRequest, err, "Invalid serial") 18 | return 19 | } 20 | 21 | cert, err := apiPKI.GetCertBySerial(r.Context(), serial) 22 | if err != nil { 23 | api.ErrorResponse(w, http.StatusInternalServerError, err, "Error obtaining certificate") 24 | return 25 | } 26 | 27 | _, userInfo, err := api.GetAPIGWPrincipal(r) 28 | if err != nil { 29 | api.ErrorResponse(w, http.StatusInternalServerError, err, "Error obtaining principal") 30 | return 31 | } 32 | 33 | if cert == nil || cert.Subject != userInfo.Email { 34 | api.ErrorResponse(w, http.StatusNotFound, nil, "Not found") 35 | return 36 | } 37 | 38 | api.JsonResponse(w, http.StatusOK, cert) 39 | } 40 | -------------------------------------------------------------------------------- /pkg/api/client/cert_list.go: -------------------------------------------------------------------------------- 1 | package clientapi 2 | 3 | import ( 4 | "net/http" 5 | 6 | "github.com/empathybroker/aws-vpn/pkg/api" 7 | ) 8 | 9 | func apiGetCerts(w http.ResponseWriter, r *http.Request) { 10 | _, userInfo, err := api.GetAPIGWPrincipal(r) 11 | if err != nil { 12 | api.ErrorResponse(w, http.StatusInternalServerError, err, "Error obtaining principal") 13 | return 14 | } 15 | 16 | subject := userInfo.Email 17 | if userInfo.IsAdmin && r.URL.Query().Get("all") == "true" { 18 | subject = "" 19 | } 20 | 21 | certs, err := apiPKI.ListCerts(r.Context(), subject) 22 | if err != nil { 23 | api.ErrorResponse(w, http.StatusInternalServerError, err, "Error listing certs") 24 | return 25 | } 26 | 27 | api.JsonResponse(w, http.StatusOK, api.J{ 28 | "isAdmin": userInfo.IsAdmin, 29 | "certs": certs, 30 | }) 31 | } 32 | -------------------------------------------------------------------------------- /pkg/api/client/cert_put.go: -------------------------------------------------------------------------------- 1 | package clientapi 2 | 3 | import ( 4 | "bytes" 5 | "crypto/x509/pkix" 6 | "encoding/asn1" 7 | "encoding/json" 8 | "fmt" 9 | "net/http" 10 | "os" 11 | "time" 12 | 13 | "github.com/empathybroker/aws-vpn/pkg/api" 14 | 15 | awsservices "github.com/empathybroker/aws-vpn/pkg/aws" 16 | "github.com/empathybroker/aws-vpn/pkg/ovpn" 17 | "github.com/empathybroker/aws-vpn/pkg/pki" 18 | log "github.com/sirupsen/logrus" 19 | jose "gopkg.in/square/go-jose.v2" 20 | ) 21 | 22 | const ( 23 | kMaxClientCerts = 2 24 | ) 25 | 26 | type newCertRequest struct { 27 | PublicKey jose.JSONWebKey `json:"publicKey"` 28 | } 29 | 30 | func apiNewCert(w http.ResponseWriter, r *http.Request) { 31 | var request newCertRequest 32 | if err := json.NewDecoder(r.Body).Decode(&request); err != nil { 33 | api.ErrorResponse(w, http.StatusBadRequest, err, "Invalid input") 34 | return 35 | } 36 | 37 | if !request.PublicKey.Valid() { 38 | api.ErrorResponse(w, http.StatusBadRequest, nil, "Invalid public key") 39 | return 40 | } 41 | 42 | _, userInfo, err := api.GetAPIGWPrincipal(r) 43 | if err != nil { 44 | api.ErrorResponse(w, http.StatusInternalServerError, err, "Error obtaining principal") 45 | return 46 | } 47 | 48 | currentCerts, err := apiPKI.ListCerts(r.Context(), userInfo.Email) 49 | if err != nil { 50 | api.ErrorResponse(w, http.StatusInternalServerError, err, "Error listing certs") 51 | return 52 | } 53 | 54 | nonRevoked := 0 55 | for _, cCert := range currentCerts { 56 | if cCert.Revoked == nil { 57 | nonRevoked += 1 58 | 59 | if nonRevoked >= kMaxClientCerts { 60 | if _, err := apiPKI.RevokeCert(r.Context(), cCert.SerialBytes); err != nil { 61 | log.WithError(err).Error("Error revoking certificate") 62 | // Don't fail 63 | } 64 | } 65 | } 66 | } 67 | 68 | name := pkix.Name{ 69 | CommonName: userInfo.Email, 70 | } 71 | 72 | /*name.ExtraNames = append(name.ExtraNames, pkix.AttributeTypeAndValue{ 73 | Type: asn1.ObjectIdentifier{0, 9, 2342, 19200300, 100, 1, 3}, // mail 74 | Value: userInfo.Email}, 75 | )*/ 76 | name.ExtraNames = append(name.ExtraNames, pkix.AttributeTypeAndValue{ 77 | Type: asn1.ObjectIdentifier{0, 9, 2342, 19200300, 100, 1, 1}, // uid 78 | Value: userInfo.Id}, 79 | ) 80 | 81 | cert, err := apiPKI.CreateCertificate(r.Context(), request.PublicKey.Key, name, 82 | pki.WithDuration(30*24*time.Hour), pki.ClientCert, pki.WithEmail(userInfo.Email)) 83 | if err != nil { 84 | api.ErrorResponse(w, http.StatusInternalServerError, err, "Error creating certificate") 85 | return 86 | } 87 | 88 | event := api.J{ 89 | "event": "cert_signed", 90 | "cert": cert, 91 | } 92 | 93 | if err := awsservices.PublishEvent(apiSNS, r.Context(), event); err != nil { 94 | log.WithError(err).Error("Error publishing event") 95 | } 96 | 97 | configData := ovpn.ConfigData{ 98 | Certificate: cert.Certificate, 99 | 100 | CACert: apiPKI.GetCACert(r.Context()), 101 | PrevCACert: apiPKI.GetPrevCACert(r.Context()), 102 | CrossCert: apiPKI.GetCrossCert(r.Context()), 103 | 104 | StaticKey: apiPKI.GetStaticKey(r.Context()), 105 | } 106 | 107 | var buf bytes.Buffer 108 | if err := ovpn.GetClientConfig(&buf, configData); err != nil { 109 | api.ErrorResponse(w, http.StatusInternalServerError, err, "Error writing OpenVPN profile") 110 | return 111 | } 112 | 113 | fname := "OpenVPN" 114 | if caName := os.Getenv("PKI_CLIENT_CERT_NAME"); caName != "" { 115 | fname = caName 116 | } 117 | 118 | w.Header().Set("X-VPN-Filename", fmt.Sprintf("%s.ovpn", fname)) 119 | w.Header().Set("Content-Type", "application/x-openvpn-profile") 120 | w.WriteHeader(http.StatusOK) 121 | if _, err := w.Write(buf.Bytes()); err != nil { 122 | log.WithError(err).Error("Error writing binary response") 123 | } 124 | } 125 | -------------------------------------------------------------------------------- /pkg/api/server/api.go: -------------------------------------------------------------------------------- 1 | package serverapi 2 | 3 | import ( 4 | "net/http" 5 | 6 | "github.com/aws/aws-xray-sdk-go/xray" 7 | awsservices "github.com/empathybroker/aws-vpn/pkg/aws" 8 | "github.com/empathybroker/aws-vpn/pkg/gsuite" 9 | "github.com/empathybroker/aws-vpn/pkg/pki" 10 | awspki "github.com/empathybroker/aws-vpn/pkg/pki/aws" 11 | "github.com/gorilla/mux" 12 | ) 13 | 14 | var ( 15 | pkiStorage = awspki.NewAWSStorage(awsservices.NewSecretsManagerClient(), awsservices.NewDynamoDBClient()) 16 | apiPKI = pki.NewPKI(pkiStorage) 17 | apiSNS = awsservices.NewSNSClient() 18 | apiEC2 = awsservices.NewEC2Client() 19 | 20 | apiSecretsManager = awsservices.NewSecretsManagerClient() 21 | apiDirectory = gsuite.NewGoogleDirectory(awsservices.NewAWSServiceAccountProvider(apiSecretsManager, "VPN/GoogleServiceAccount")) 22 | ) 23 | 24 | func NewRouter() *mux.Router { 25 | r := mux.NewRouter() 26 | r.Use(func(handler http.Handler) http.Handler { 27 | return xray.Handler(xray.NewFixedSegmentNamer("vpn-api-server"), handler) 28 | }) 29 | 30 | r.HandleFunc("/config", apiServerConfig).Methods(http.MethodPost) 31 | r.HandleFunc("/verify", apiServerVerify).Methods(http.MethodPost) 32 | r.HandleFunc("/connect", apiServerConnect).Methods(http.MethodPost) 33 | r.HandleFunc("/disconnect", apiServerDisconnect).Methods(http.MethodPost) 34 | 35 | return r 36 | } 37 | -------------------------------------------------------------------------------- /pkg/api/server/server_config.go: -------------------------------------------------------------------------------- 1 | package serverapi 2 | 3 | import ( 4 | "bytes" 5 | "crypto/x509/pkix" 6 | "encoding/json" 7 | "net/http" 8 | "os" 9 | "time" 10 | 11 | "github.com/empathybroker/aws-vpn/pkg/api" 12 | awsservices "github.com/empathybroker/aws-vpn/pkg/aws" 13 | "github.com/empathybroker/aws-vpn/pkg/ovpn" 14 | "github.com/empathybroker/aws-vpn/pkg/pki" 15 | log "github.com/sirupsen/logrus" 16 | jose "gopkg.in/square/go-jose.v2" 17 | ) 18 | 19 | type configRequest struct { 20 | PublicKey jose.JSONWebKey `json:"publicKey"` 21 | } 22 | 23 | func apiServerConfig(w http.ResponseWriter, r *http.Request) { 24 | var request configRequest 25 | if err := json.NewDecoder(r.Body).Decode(&request); err != nil { 26 | api.ErrorResponse(w, http.StatusBadRequest, err, "Invalid input") 27 | return 28 | } 29 | 30 | if !request.PublicKey.Valid() { 31 | api.ErrorResponse(w, http.StatusBadRequest, nil, "Invalid public key") 32 | return 33 | } 34 | 35 | dnsName := os.Getenv("PKI_DOMAIN") 36 | if dnsName == "" { 37 | api.ErrorResponse(w, http.StatusInternalServerError, nil, "Missing domain name") 38 | return 39 | } 40 | 41 | cert, err := apiPKI.CreateCertificate(r.Context(), request.PublicKey.Key, 42 | pkix.Name{CommonName: dnsName}, pki.ServerCert, 43 | pki.WithDuration(30*24*time.Hour), pki.WithDNS(dnsName)) 44 | if err != nil { 45 | api.ErrorResponse(w, http.StatusInternalServerError, err, "Error signing certificate") 46 | return 47 | } 48 | 49 | configData := ovpn.ConfigData{ 50 | Certificate: cert.Certificate, 51 | 52 | CACert: apiPKI.GetCACert(r.Context()), 53 | PrevCACert: apiPKI.GetPrevCACert(r.Context()), 54 | CrossCert: apiPKI.GetCrossCert(r.Context()), 55 | 56 | StaticKey: apiPKI.GetStaticKey(r.Context()), 57 | } 58 | 59 | var config bytes.Buffer 60 | if err := ovpn.GetServerConfig(&config, configData); err != nil { 61 | api.ErrorResponse(w, http.StatusInternalServerError, err, "Error obtaining config") 62 | return 63 | } 64 | 65 | event := api.J{ 66 | "event": "server_cert", 67 | "success": true, 68 | "request": request, 69 | "cert": cert, 70 | } 71 | 72 | if err := awsservices.PublishEvent(apiSNS, r.Context(), event); err != nil { 73 | log.WithError(err).Error("Error publishing event") 74 | } 75 | 76 | api.JsonResponse(w, http.StatusOK, api.J{ 77 | "message": "OK", 78 | "config": config.Bytes(), 79 | }) 80 | } 81 | -------------------------------------------------------------------------------- /pkg/api/server/server_connect.go: -------------------------------------------------------------------------------- 1 | package serverapi 2 | 3 | import ( 4 | "encoding/json" 5 | "fmt" 6 | "net" 7 | "net/http" 8 | "os" 9 | "strings" 10 | 11 | "github.com/aws/aws-sdk-go/aws" 12 | "github.com/aws/aws-sdk-go/service/ec2" 13 | "github.com/empathybroker/aws-vpn/pkg/api" 14 | awsservices "github.com/empathybroker/aws-vpn/pkg/aws" 15 | "github.com/pkg/errors" 16 | log "github.com/sirupsen/logrus" 17 | ) 18 | 19 | type connectRequest struct { 20 | CommonName string `json:"common_name"` 21 | TrustedIP net.IP `json:"trusted_ip"` 22 | 23 | ClientHWAddr string `json:"client_hwaddr"` 24 | ClientPlatform string `json:"client_platform"` 25 | ClientVersion string `json:"client_version"` 26 | ClientGUI string `json:"client_gui"` 27 | ClientSSL string `json:"client_ssl"` 28 | } 29 | 30 | func subnetToRoute(subnetStr string) (string, error) { 31 | if _, subnet, err := net.ParseCIDR(subnetStr); err == nil { 32 | mask := net.IPv4(subnet.Mask[0], subnet.Mask[1], subnet.Mask[2], subnet.Mask[3]) 33 | return fmt.Sprintf("route %s %s", subnet.IP.String(), mask.String()), nil 34 | } else { 35 | return "", errors.Wrapf(err, "parsing subnet CIDR: %s", subnetStr) 36 | } 37 | } 38 | 39 | func apiServerConnect(w http.ResponseWriter, r *http.Request) { 40 | var request connectRequest 41 | if err := json.NewDecoder(r.Body).Decode(&request); err != nil { 42 | api.ErrorResponse(w, http.StatusBadRequest, err, "Invalid input") 43 | return 44 | } 45 | 46 | userInfo, err := apiDirectory.GetUserInfo(r.Context(), request.CommonName) 47 | if err != nil { 48 | api.ErrorResponse(w, http.StatusInternalServerError, err, "Could not get user info") 49 | return 50 | } 51 | 52 | if userInfo.IsSuspended { 53 | event := api.J{ 54 | "event": "client_connect", 55 | "success": false, 56 | "error": "user_suspended", 57 | "request": request, 58 | } 59 | 60 | if err := awsservices.PublishEvent(apiSNS, r.Context(), event); err != nil { 61 | log.WithError(err).Error("Error publishing event") 62 | } 63 | 64 | api.ErrorResponse(w, http.StatusUnauthorized, nil, "User is suspended") 65 | return 66 | } 67 | 68 | var push []string 69 | if vpnSchema, ok := userInfo.Schemas["VPN"]; ok { 70 | if macaddrs, ok := vpnSchema["Allowed_MACs"].([]interface{}); ok && len(macaddrs) > 0 { 71 | 72 | found := false 73 | for _, macaddrI := range macaddrs { 74 | if macaddr, ok := macaddrI.(string); ok { 75 | if macaddr == request.ClientHWAddr { 76 | found = true 77 | break 78 | } 79 | } 80 | } 81 | 82 | if !found { 83 | event := api.J{ 84 | "event": "client_connect", 85 | "success": false, 86 | "error": "mac_mismatch", 87 | "expected": macaddrs, 88 | "request": request, 89 | } 90 | 91 | if err := awsservices.PublishEvent(apiSNS, r.Context(), event); err != nil { 92 | log.WithError(err).Error("Error publishing event") 93 | } 94 | 95 | api.ErrorResponse(w, http.StatusUnauthorized, nil, "Unexpected MAC address") 96 | return 97 | } 98 | } 99 | 100 | if subnets, ok := vpnSchema["Allowed_subnets"].([]interface{}); ok { 101 | for _, subnetI := range subnets { 102 | if subnetStr, ok := subnetI.(string); ok { 103 | if route, err := subnetToRoute(subnetStr); err == nil { 104 | push = append(push, route) 105 | } else { 106 | log.WithError(err).Error("Error parsing route from user schema") 107 | } 108 | } 109 | } 110 | } 111 | } else { 112 | // error missing schema 113 | } 114 | 115 | if os.Getenv("PKI_ROUTE_EC2_PREFIX_LIST") == "true" { 116 | if pl, err := apiEC2.DescribePrefixListsWithContext(r.Context(), &ec2.DescribePrefixListsInput{}); err == nil { 117 | for _, p := range pl.PrefixLists { 118 | for _, subnet := range aws.StringValueSlice(p.Cidrs) { 119 | if route, err := subnetToRoute(subnet); err == nil { 120 | push = append(push, route) 121 | } else { 122 | log.WithError(err).Error("Error parsing route from prefix list") 123 | } 124 | } 125 | } 126 | } 127 | } 128 | 129 | if domainSearch := os.Getenv("PKI_DOMAIN_SEARCH"); domainSearch != "" { 130 | for _, domain := range strings.Split(domainSearch, ",") { 131 | push = append(push, fmt.Sprintf("dhcp-option DOMAIN %s", domain)) 132 | } 133 | } 134 | 135 | push = append(push, "dhcp-option DNS 10.8.0.1") 136 | push = append(push, "route-metric 101") 137 | 138 | event := api.J{ 139 | "event": "client_connect", 140 | "success": true, 141 | "request": request, 142 | "push": push, 143 | } 144 | 145 | if err := awsservices.PublishEvent(apiSNS, r.Context(), event); err != nil { 146 | log.WithError(err).Error("Error publishing event") 147 | } 148 | 149 | api.JsonResponse(w, http.StatusOK, api.J{ 150 | "message": "OK", 151 | "push": push, 152 | }) 153 | } 154 | -------------------------------------------------------------------------------- /pkg/api/server/server_disconnect.go: -------------------------------------------------------------------------------- 1 | package serverapi 2 | 3 | import ( 4 | "encoding/json" 5 | "net" 6 | "net/http" 7 | 8 | "github.com/empathybroker/aws-vpn/pkg/api" 9 | awsservices "github.com/empathybroker/aws-vpn/pkg/aws" 10 | log "github.com/sirupsen/logrus" 11 | ) 12 | 13 | type disconnectRequest struct { 14 | CommonName string `json:"common_name"` 15 | TrustedIP net.IP `json:"trusted_ip"` 16 | 17 | Duration int `json:"duration"` 18 | BytesSent int `json:"bytes_sent"` 19 | BytesReceived int `json:"bytes_received"` 20 | 21 | ClientHWAddr string `json:"client_hwaddr"` 22 | ClientPlatform string `json:"client_platform"` 23 | ClientVersion string `json:"client_version"` 24 | ClientGUI string `json:"client_gui"` 25 | ClientSSL string `json:"client_ssl"` 26 | } 27 | 28 | func apiServerDisconnect(w http.ResponseWriter, r *http.Request) { 29 | var request disconnectRequest 30 | if err := json.NewDecoder(r.Body).Decode(&request); err != nil { 31 | api.ErrorResponse(w, http.StatusBadRequest, err, "Invalid input") 32 | return 33 | } 34 | 35 | event := api.J{ 36 | "event": "client_disconnect", 37 | "request": request, 38 | } 39 | 40 | if err := awsservices.PublishEvent(apiSNS, r.Context(), event); err != nil { 41 | log.WithError(err).Error("Error publishing event") 42 | } 43 | 44 | api.JsonResponse(w, http.StatusOK, api.J{"message": "OK"}) 45 | } 46 | -------------------------------------------------------------------------------- /pkg/api/server/server_verify.go: -------------------------------------------------------------------------------- 1 | package serverapi 2 | 3 | import ( 4 | "encoding/json" 5 | "net" 6 | "net/http" 7 | 8 | "github.com/empathybroker/aws-vpn/pkg/api" 9 | awsservices "github.com/empathybroker/aws-vpn/pkg/aws" 10 | "github.com/empathybroker/aws-vpn/pkg/pki" 11 | log "github.com/sirupsen/logrus" 12 | ) 13 | 14 | type verifyRequest struct { 15 | Subject string `json:"subject"` 16 | Serial string `json:"serial"` 17 | Digest string `json:"digest"` 18 | Client net.IP `json:"client"` 19 | } 20 | 21 | func apiServerVerify(w http.ResponseWriter, r *http.Request) { 22 | var request verifyRequest 23 | if err := json.NewDecoder(r.Body).Decode(&request); err != nil { 24 | api.ErrorResponse(w, http.StatusBadRequest, err, "Invalid input") 25 | return 26 | } 27 | 28 | serial, err := pki.DecodeSerial(request.Serial) 29 | if err != nil { 30 | api.ErrorResponse(w, http.StatusBadRequest, err, "Invalid serial") 31 | return 32 | } 33 | 34 | cert, err := apiPKI.GetCertBySerial(r.Context(), serial) 35 | if err != nil { 36 | api.ErrorResponse(w, http.StatusInternalServerError, err, "Error fetching certificate") 37 | return 38 | } 39 | 40 | if cert == nil { 41 | event := api.J{ 42 | "event": "cert_verify", 43 | "success": false, 44 | "error": "cert_not_found", 45 | "request": request, 46 | } 47 | 48 | if err := awsservices.PublishEvent(apiSNS, r.Context(), event); err != nil { 49 | log.WithError(err).Error("Error publishing event") 50 | } 51 | 52 | api.ErrorResponse(w, http.StatusUnauthorized, err, "Certificate not found") 53 | return 54 | } 55 | 56 | if cert.Revoked != nil { 57 | event := api.J{ 58 | "event": "cert_verify", 59 | "success": false, 60 | "error": "cert_revoked", 61 | "request": request, 62 | } 63 | 64 | if err := awsservices.PublishEvent(apiSNS, r.Context(), event); err != nil { 65 | log.WithError(err).Error("Error publishing event") 66 | } 67 | 68 | api.ErrorResponse(w, http.StatusForbidden, err, "Certificate has been revoked") 69 | return 70 | } 71 | 72 | event := api.J{ 73 | "event": "cert_verify", 74 | "success": true, 75 | "request": request, 76 | "cert": cert, 77 | } 78 | 79 | if err := awsservices.PublishEvent(apiSNS, r.Context(), event); err != nil { 80 | log.WithError(err).Error("Error publishing event") 81 | } 82 | 83 | api.JsonResponse(w, http.StatusOK, api.J{"message": "OK"}) 84 | } 85 | -------------------------------------------------------------------------------- /pkg/api/utils.go: -------------------------------------------------------------------------------- 1 | package api 2 | 3 | import ( 4 | "encoding/json" 5 | "net/http" 6 | "os" 7 | 8 | "github.com/awslabs/aws-lambda-go-api-proxy/core" 9 | "github.com/empathybroker/aws-vpn/pkg/gsuite" 10 | "github.com/pkg/errors" 11 | log "github.com/sirupsen/logrus" 12 | ) 13 | 14 | var ( 15 | accessor core.RequestAccessor 16 | ) 17 | 18 | type J map[string]interface{} 19 | 20 | func GetAPIGWPrincipal(r *http.Request) (string, *gsuite.UserInfo, error) { 21 | ctx, err := accessor.GetAPIGatewayContext(r) 22 | if err != nil { 23 | return "", nil, errors.WithStack(err) 24 | } 25 | 26 | pid, ok := ctx.Authorizer["principalId"].(string) 27 | if !ok || pid == "" { 28 | return "", nil, errors.New("principalID not found") 29 | } 30 | 31 | googleInfo, ok := ctx.Authorizer["google"].(string) 32 | if !ok || googleInfo == "" { 33 | return "", nil, errors.New("Google data not found") 34 | } 35 | 36 | var userInfo *gsuite.UserInfo 37 | if err := json.Unmarshal([]byte(googleInfo), &userInfo); err != nil { 38 | return "", nil, errors.Wrap(err, "unmarshaling Google data") 39 | } 40 | 41 | return pid, userInfo, nil 42 | } 43 | 44 | func JsonResponse(w http.ResponseWriter, statusCode int, value interface{}) { 45 | w.Header().Set("Content-Type", "application/json") 46 | w.WriteHeader(statusCode) 47 | if err := json.NewEncoder(w).Encode(value); err != nil { 48 | log.WithError(err).Errorf("Error writing JSON response") 49 | } 50 | } 51 | 52 | func ErrorResponse(w http.ResponseWriter, statusCode int, err error, msg string) { 53 | e := J{"message": msg} 54 | 55 | if err != nil && os.Getenv("DEBUG") == "true" { 56 | e["error"] = err.Error() 57 | e["cause"] = errors.Cause(err) 58 | } 59 | 60 | log.WithError(err).Errorf("Error response with code %d: %s", statusCode, msg) 61 | JsonResponse(w, statusCode, e) 62 | } 63 | -------------------------------------------------------------------------------- /pkg/aws/clients.go: -------------------------------------------------------------------------------- 1 | package awsservices 2 | 3 | import ( 4 | "fmt" 5 | "os" 6 | 7 | "github.com/aws/aws-sdk-go/service/ses/sesiface" 8 | 9 | "github.com/aws/aws-sdk-go/aws" 10 | "github.com/aws/aws-sdk-go/aws/credentials/stscreds" 11 | "github.com/aws/aws-sdk-go/aws/session" 12 | "github.com/aws/aws-sdk-go/service/dynamodb" 13 | "github.com/aws/aws-sdk-go/service/dynamodb/dynamodbiface" 14 | "github.com/aws/aws-sdk-go/service/ec2" 15 | "github.com/aws/aws-sdk-go/service/ec2/ec2iface" 16 | "github.com/aws/aws-sdk-go/service/secretsmanager" 17 | "github.com/aws/aws-sdk-go/service/secretsmanager/secretsmanageriface" 18 | "github.com/aws/aws-sdk-go/service/ses" 19 | "github.com/aws/aws-sdk-go/service/sns" 20 | "github.com/aws/aws-sdk-go/service/sns/snsiface" 21 | "github.com/aws/aws-xray-sdk-go/xray" 22 | ) 23 | 24 | var ( 25 | sess = session.Must(session.NewSession()) 26 | ) 27 | 28 | func makeConfig(serviceName string) *aws.Config { 29 | config := aws.NewConfig() 30 | if role, ok := os.LookupEnv(fmt.Sprintf("AWS_%s_ROLE_ARN", serviceName)); ok { 31 | config.WithCredentials(stscreds.NewCredentials(sess, role)) 32 | } 33 | 34 | if endpoint, ok := os.LookupEnv(fmt.Sprintf("AWS_%s_ENDPOINT", serviceName)); ok { 35 | config.WithDisableSSL(true) 36 | config.WithEndpoint(endpoint) 37 | } 38 | 39 | return config 40 | } 41 | 42 | func NewDynamoDBClient() dynamodbiface.DynamoDBAPI { 43 | svc := dynamodb.New(sess, makeConfig("DYNAMODB")) 44 | xray.AWS(svc.Client) 45 | return svc 46 | } 47 | 48 | func NewSecretsManagerClient() secretsmanageriface.SecretsManagerAPI { 49 | svc := secretsmanager.New(sess, makeConfig("SECRETSMANAGER")) 50 | xray.AWS(svc.Client) 51 | return svc 52 | } 53 | 54 | func NewSNSClient() snsiface.SNSAPI { 55 | svc := sns.New(sess, makeConfig("SNS")) 56 | xray.AWS(svc.Client) 57 | return svc 58 | } 59 | 60 | func NewEC2Client() ec2iface.EC2API { 61 | svc := ec2.New(sess, makeConfig("EC2")) 62 | xray.AWS(svc.Client) 63 | return svc 64 | } 65 | 66 | func NewSESClient() sesiface.SESAPI { 67 | svc := ses.New(sess, makeConfig("SES")) 68 | xray.AWS(svc.Client) 69 | return svc 70 | } 71 | -------------------------------------------------------------------------------- /pkg/aws/events.go: -------------------------------------------------------------------------------- 1 | package awsservices 2 | 3 | import ( 4 | "context" 5 | "encoding/json" 6 | "os" 7 | 8 | "github.com/aws/aws-sdk-go/aws" 9 | "github.com/aws/aws-sdk-go/service/sns" 10 | "github.com/aws/aws-sdk-go/service/sns/snsiface" 11 | "github.com/pkg/errors" 12 | log "github.com/sirupsen/logrus" 13 | ) 14 | 15 | func PublishEvent(snsClient snsiface.SNSAPI, ctx context.Context, message map[string]interface{}) error { 16 | if topicARN, ok := os.LookupEnv("SNS_TOPIC_ARN"); ok { 17 | jsonMsg, err := json.Marshal(message) 18 | if err != nil { 19 | return errors.Wrapf(err, "marshalling event") 20 | } 21 | 22 | r, err := snsClient.PublishWithContext(ctx, &sns.PublishInput{ 23 | TopicArn: aws.String(topicARN), 24 | Subject: aws.String("VPN Event"), 25 | Message: aws.String(string(jsonMsg)), 26 | }) 27 | if err != nil { 28 | return errors.Wrap(err, "sending event") 29 | } 30 | 31 | log.Debugf("Published event with ID: %s", aws.StringValue(r.MessageId)) 32 | } 33 | 34 | return nil 35 | } 36 | -------------------------------------------------------------------------------- /pkg/aws/gsutesecrets.go: -------------------------------------------------------------------------------- 1 | package awsservices 2 | 3 | import ( 4 | "context" 5 | 6 | "github.com/aws/aws-sdk-go/aws" 7 | "github.com/aws/aws-sdk-go/service/secretsmanager" 8 | "github.com/aws/aws-sdk-go/service/secretsmanager/secretsmanageriface" 9 | ) 10 | 11 | type awsServiceAccountProvider struct { 12 | secretsManager secretsmanageriface.SecretsManagerAPI 13 | secretId string 14 | } 15 | 16 | func NewAWSServiceAccountProvider(secretsManager secretsmanageriface.SecretsManagerAPI, secretId string) *awsServiceAccountProvider { 17 | return &awsServiceAccountProvider{ 18 | secretsManager: secretsManager, 19 | secretId: secretId, 20 | } 21 | } 22 | 23 | func (p awsServiceAccountProvider) GetKey(ctx context.Context) ([]byte, error) { 24 | res, err := p.secretsManager.GetSecretValueWithContext(ctx, &secretsmanager.GetSecretValueInput{ 25 | SecretId: aws.String(p.secretId), 26 | }) 27 | if err != nil { 28 | return nil, err 29 | } 30 | 31 | return res.SecretBinary, nil 32 | } 33 | -------------------------------------------------------------------------------- /pkg/aws/sign.go: -------------------------------------------------------------------------------- 1 | package awsservices 2 | 3 | import ( 4 | "bytes" 5 | "io" 6 | "io/ioutil" 7 | "net/http" 8 | "time" 9 | 10 | "github.com/aws/aws-sdk-go/aws" 11 | "github.com/aws/aws-sdk-go/aws/session" 12 | "github.com/aws/aws-sdk-go/aws/signer/v4" 13 | ) 14 | 15 | type awsSigningTransport struct { 16 | parent http.RoundTripper 17 | signer *v4.Signer 18 | serviceName string 19 | serviceRegion string 20 | } 21 | 22 | func NewAWSSigner(s *session.Session, serviceName string, parent http.RoundTripper) *awsSigningTransport { 23 | return &awsSigningTransport{ 24 | signer: v4.NewSigner(s.Config.Credentials), 25 | serviceRegion: aws.StringValue(s.Config.Region), 26 | serviceName: serviceName, 27 | parent: parent, 28 | } 29 | } 30 | 31 | func (t *awsSigningTransport) RoundTrip(req *http.Request) (*http.Response, error) { 32 | req = cloneRequest(req) 33 | 34 | var body io.ReadSeeker 35 | if req.Body != nil { 36 | defer req.Body.Close() 37 | payload, err := ioutil.ReadAll(req.Body) 38 | if err != nil { 39 | return nil, err 40 | } 41 | 42 | body = bytes.NewReader(payload) 43 | req.Body = ioutil.NopCloser(body) 44 | } 45 | 46 | _, err := t.signer.Sign(req, body, t.serviceName, t.serviceRegion, time.Now()) 47 | if err != nil { 48 | return nil, err 49 | } 50 | 51 | return t.parent.RoundTrip(req) 52 | } 53 | 54 | // CloneRequest creates a shallow copy of the request along with a deep copy of the Headers. 55 | func cloneRequest(req *http.Request) *http.Request { 56 | r := new(http.Request) 57 | 58 | // shallow clone 59 | *r = *req 60 | 61 | // deep copy headers 62 | r.Header = cloneHeader(req.Header) 63 | 64 | return r 65 | } 66 | 67 | // CloneHeader creates a deep copy of an http.Header. 68 | func cloneHeader(in http.Header) http.Header { 69 | out := make(http.Header, len(in)) 70 | for key, values := range in { 71 | newValues := make([]string, len(values)) 72 | copy(newValues, values) 73 | out[key] = newValues 74 | } 75 | return out 76 | } 77 | -------------------------------------------------------------------------------- /pkg/gsuite/gdirectory.go: -------------------------------------------------------------------------------- 1 | package gsuite 2 | 3 | import ( 4 | "context" 5 | "encoding/json" 6 | "os" 7 | "sync" 8 | 9 | "github.com/aws/aws-xray-sdk-go/xray" 10 | log "github.com/sirupsen/logrus" 11 | "golang.org/x/oauth2/google" 12 | admin "google.golang.org/api/admin/directory/v1" 13 | ) 14 | 15 | type GoogleServiceAccountSecretProvider interface { 16 | GetKey(context.Context) ([]byte, error) 17 | } 18 | 19 | type GoogleDirectory struct { 20 | secretProvider GoogleServiceAccountSecretProvider 21 | 22 | service *admin.Service 23 | once sync.Once 24 | } 25 | 26 | type UserInfo struct { 27 | Id string `json:"id"` 28 | Email string `json:"email"` 29 | Name string `json:"name"` 30 | 31 | IsAdmin bool `json:"is_admin"` 32 | IsSuspended bool `json:"is_suspended"` 33 | 34 | Schemas map[string]map[string]interface{} `json:"schemas"` 35 | } 36 | 37 | func NewGoogleDirectory(secretProvider GoogleServiceAccountSecretProvider) *GoogleDirectory { 38 | return &GoogleDirectory{ 39 | secretProvider: secretProvider, 40 | } 41 | } 42 | 43 | func (d *GoogleDirectory) init(ctx context.Context) { 44 | d.once.Do(func() { 45 | jsonKey, err := d.secretProvider.GetKey(ctx) 46 | if err != nil { 47 | log.WithError(err).Fatal("Error obtaining Google Service Account key") 48 | } 49 | 50 | config, err := google.JWTConfigFromJSON(jsonKey, admin.AdminDirectoryUserReadonlyScope) 51 | if err != nil { 52 | log.WithError(err).Fatal("Error creating config from Service Account key") 53 | } 54 | 55 | if iSubject, ok := os.LookupEnv("GSUITE_IMPERSONATE_SUBJECT"); ok { 56 | config.Subject = iSubject 57 | } 58 | 59 | oaClient := config.Client(ctx) 60 | oaClient = xray.Client(oaClient) 61 | d.service, err = admin.New(oaClient) 62 | if err != nil { 63 | log.WithError(err).Fatal("Error creating Admin SDK client") 64 | } 65 | }) 66 | } 67 | 68 | func (d *GoogleDirectory) GetUserInfo(ctx context.Context, userKey string) (*UserInfo, error) { 69 | d.init(ctx) 70 | 71 | res, err := d.service.Users.Get(userKey).Projection("full").Context(ctx).Do() 72 | if err != nil { 73 | return nil, err 74 | } 75 | 76 | schemas := make(map[string]map[string]interface{}) 77 | for s, r := range res.CustomSchemas { 78 | schemas[s] = make(map[string]interface{}) 79 | var schema map[string]interface{} 80 | if err := json.Unmarshal(r, &schema); err == nil { 81 | for k, v := range schema { 82 | if v1, ok := v.([]interface{}); ok { 83 | var values []interface{} 84 | for _, v2 := range v1 { 85 | if v3, ok := v2.(map[string]interface{}); ok { 86 | if v4, ok := v3["value"]; ok { 87 | values = append(values, v4) 88 | } 89 | } else { 90 | values = append(values, v3) 91 | } 92 | } 93 | schemas[s][k] = values 94 | } else { 95 | schemas[s][k] = v 96 | } 97 | } 98 | } 99 | } 100 | 101 | return &UserInfo{ 102 | Id: res.Id, 103 | Email: res.PrimaryEmail, 104 | Name: res.Name.FullName, 105 | 106 | IsAdmin: res.IsAdmin, 107 | IsSuspended: res.Suspended, 108 | 109 | Schemas: schemas, 110 | }, nil 111 | } 112 | -------------------------------------------------------------------------------- /pkg/ovpn/config_client.go: -------------------------------------------------------------------------------- 1 | package ovpn 2 | 3 | const kClientConfigTemplate = `# OpenVPN client settings 4 | # Configuration file for {{ .Certificate.Subject.String }} 5 | # Expires on: {{ .Certificate.NotAfter.Format "02 Jan 06 15:04 MST" }} 6 | 7 | dev tun 8 | client 9 | remote {{ env "PKI_DOMAIN" }} 10 | remote-random-hostname 11 | push-peer-info 12 | explicit-exit-notify 13 | 14 | remote-cert-tls server 15 | tls-version-min 1.3 or-highest 16 | verify-x509-name '{{ env "PKI_DOMAIN" }}' name 17 | cipher AES-256-GCM 18 | auth SHA256 19 | verb 3 20 | 21 | # Serial Number: {{ .Certificate.SerialNumber.Text 16 }} 22 | 23 | {{ printf "%s" (pemCert .Certificate) -}} 24 | 25 | 26 | {{ if .CrossCert -}} 27 | 28 | {{ printf "%s" (pemCert .CrossCert) -}} 29 | 30 | {{- end }} 31 | 32 | # Key ID: {{ printf "%x" .Certificate.SubjectKeyId }} 33 | 34 | %PRIVATEKEY% 35 | 36 | 37 | {{ printf "%s" (pemCert .CACert) -}} 38 | {{- if .PrevCACert -}}{{ printf "%s" (pemCert .PrevCACert) -}}{{- end -}} 39 | 40 | 41 | 42 | {{ printf "%s" .StaticKey -}} 43 | 44 | ` 45 | -------------------------------------------------------------------------------- /pkg/ovpn/config_server.go: -------------------------------------------------------------------------------- 1 | package ovpn 2 | 3 | const kServerConfigTemplate = `# OpenVPN server settings 4 | # Expires on: {{ .Certificate.NotAfter.Format "02 Jan 06 15:04 MST" }} 5 | 6 | dev tun 7 | topology subnet 8 | server 10.8.0.0 255.255.255.0 9 | keepalive 10 60 10 | client-to-client 11 | push-peer-info 12 | opt-verify 13 | mlock 14 | 15 | auth-gen-token 16 | explicit-exit-notify 17 | script-security 2 18 | status-version 3 19 | mute-replay-warnings 20 | verb 4 21 | 22 | # scripts 23 | setenv AWS_REGION {{ env "AWS_REGION" }} 24 | setenv PKI_API_ENDPOINT https://{{ env "PKI_DOMAIN" }}/api 25 | tls-verify /usr/local/bin/ovpn-helper 26 | client-connect /usr/local/bin/ovpn-helper 27 | client-disconnect /usr/local/bin/ovpn-helper 28 | 29 | # Authentication 30 | tls-server 31 | auth SHA256 32 | cipher AES-256-GCM 33 | remote-cert-tls client 34 | tls-cert-profile preferred 35 | tls-version-min 1.3 or-highest 36 | x509-username-field ext:subjectAltName 37 | 38 | # Serial Number {{ .Certificate.SerialNumber.Text 16 }} 39 | 40 | {{ printf "%s" (pemCert .Certificate) -}} 41 | 42 | 43 | {{ if .CrossCert -}} 44 | 45 | {{ printf "%s" (pemCert .CrossCert) -}} 46 | 47 | {{- end }} 48 | 49 | # Key ID: {{ printf "%x" .Certificate.SubjectKeyId }} 50 | 51 | %PRIVATEKEY% 52 | 53 | 54 | {{ printf "%s" (pemCert .CACert) -}} 55 | {{- if .PrevCACert -}}{{ printf "%s" (pemCert .PrevCACert) -}}{{- end -}} 56 | 57 | 58 | 59 | {{ printf "%s" .StaticKey -}} 60 | 61 | 62 | dh none 63 | ` 64 | -------------------------------------------------------------------------------- /pkg/ovpn/templates.go: -------------------------------------------------------------------------------- 1 | package ovpn 2 | 3 | import ( 4 | "crypto/x509" 5 | "io" 6 | "os" 7 | "text/template" 8 | 9 | "github.com/empathybroker/aws-vpn/pkg/pki" 10 | ) 11 | 12 | var ( 13 | funcs = template.FuncMap{ 14 | "pemCert": pki.EncodePEMCert, 15 | "env": os.Getenv, 16 | } 17 | tplClientConfig = template.Must(template.New("client_config").Funcs(funcs).Parse(kClientConfigTemplate)) 18 | tplServerConfig = template.Must(template.New("server_config").Funcs(funcs).Parse(kServerConfigTemplate)) 19 | ) 20 | 21 | type ConfigData struct { 22 | Certificate *x509.Certificate 23 | 24 | CACert *x509.Certificate 25 | PrevCACert *x509.Certificate 26 | CrossCert *x509.Certificate 27 | 28 | StaticKey pki.StaticKey 29 | } 30 | 31 | func GetClientConfig(w io.Writer, data ConfigData) error { 32 | return tplClientConfig.Execute(w, data) 33 | } 34 | 35 | func GetServerConfig(w io.Writer, data ConfigData) error { 36 | return tplServerConfig.Execute(w, data) 37 | } 38 | -------------------------------------------------------------------------------- /pkg/pki/aws/aws.go: -------------------------------------------------------------------------------- 1 | package awspki 2 | 3 | import ( 4 | "sync" 5 | "time" 6 | 7 | "github.com/aws/aws-sdk-go/service/dynamodb/dynamodbiface" 8 | "github.com/aws/aws-sdk-go/service/secretsmanager/secretsmanageriface" 9 | "github.com/empathybroker/aws-vpn/pkg/pki" 10 | ) 11 | 12 | type awsStorage struct { 13 | sm secretsmanageriface.SecretsManagerAPI 14 | ddb dynamodbiface.DynamoDBAPI 15 | 16 | data pki.CAData 17 | mut sync.Mutex 18 | exp time.Time 19 | } 20 | 21 | func NewAWSStorage(sm secretsmanageriface.SecretsManagerAPI, ddb dynamodbiface.DynamoDBAPI) *awsStorage { 22 | return &awsStorage{ 23 | sm: sm, 24 | ddb: ddb, 25 | } 26 | } 27 | -------------------------------------------------------------------------------- /pkg/pki/aws/config.go: -------------------------------------------------------------------------------- 1 | package awspki 2 | 3 | import ( 4 | "github.com/kelseyhightower/envconfig" 5 | ) 6 | 7 | const kConfigPrefix = "PKI_AWS" 8 | 9 | var configAWSPKI struct { 10 | SecretName string `split_words:"true" default:"VPN/CAPrivateKey"` 11 | TableName string `split_words:"true" default:"vpn_certificates"` 12 | DurationDays int `split_words:"true" default:"30"` 13 | } 14 | 15 | func init() { 16 | envconfig.MustProcess(kConfigPrefix, &configAWSPKI) 17 | } 18 | -------------------------------------------------------------------------------- /pkg/pki/aws/dynamodb.go: -------------------------------------------------------------------------------- 1 | package awspki 2 | 3 | import ( 4 | "context" 5 | "crypto/x509" 6 | "errors" 7 | "time" 8 | 9 | "github.com/aws/aws-sdk-go/aws" 10 | "github.com/aws/aws-sdk-go/service/dynamodb" 11 | A "github.com/aws/aws-sdk-go/service/dynamodb/dynamodbattribute" 12 | E "github.com/aws/aws-sdk-go/service/dynamodb/expression" 13 | "github.com/empathybroker/aws-vpn/pkg/pki" 14 | log "github.com/sirupsen/logrus" 15 | ) 16 | 17 | func (s *awsStorage) GetCertBySerial(ctx context.Context, serial []byte) (*pki.CertificateInfo, error) { 18 | res, err := s.ddb.GetItemWithContext(ctx, &dynamodb.GetItemInput{ 19 | TableName: aws.String(configAWSPKI.TableName), 20 | Key: map[string]*dynamodb.AttributeValue{ 21 | kAttrSerialNumber: {B: serial}, 22 | }, 23 | ConsistentRead: aws.Bool(true), 24 | }) 25 | if err != nil { 26 | return nil, err 27 | } 28 | 29 | var certEntry dynamoCertEntry 30 | if err := A.UnmarshalMap(res.Item, &certEntry); err != nil { 31 | return nil, err 32 | } 33 | 34 | return certEntry.toCertificateInfo() 35 | } 36 | 37 | func (s *awsStorage) ListAllCerts(ctx context.Context) ([]*pki.CertificateInfo, error) { 38 | filter := E.GreaterThan(E.Key(kAttrValidUntil), E.Value(time.Now().UTC().Unix())) 39 | filter = filter.And(E.Equal(E.Key(kAttrCertType), E.Value(pki.CertTypeClient))) 40 | 41 | exp, err := E.NewBuilder(). 42 | WithFilter(filter). 43 | Build() 44 | if err != nil { 45 | return nil, err 46 | } 47 | 48 | query := &dynamodb.ScanInput{ 49 | TableName: aws.String(configAWSPKI.TableName), 50 | 51 | ExpressionAttributeNames: exp.Names(), 52 | ExpressionAttributeValues: exp.Values(), 53 | FilterExpression: exp.Filter(), 54 | } 55 | 56 | certs := make([]*pki.CertificateInfo, 0) 57 | if err := s.ddb.ScanPagesWithContext(ctx, query, func(output *dynamodb.ScanOutput, b bool) bool { 58 | for _, item := range output.Items { 59 | var certEntry dynamoCertEntry 60 | if err := A.UnmarshalMap(item, &certEntry); err != nil { 61 | log.WithError(err).Error("Error unmarshaling cert from Dynamo") 62 | continue 63 | } 64 | 65 | info, err := certEntry.toCertificateInfo() 66 | if err != nil { 67 | log.WithError(err).Error("Error parsing certificate from Dynamo") 68 | continue 69 | } 70 | 71 | certs = append(certs, info) 72 | } 73 | 74 | return b 75 | }); err != nil { 76 | return nil, err 77 | } 78 | 79 | return certs, nil 80 | } 81 | 82 | func (s *awsStorage) ListCertsBySubject(ctx context.Context, subjectName string) ([]*pki.CertificateInfo, error) { 83 | exp, err := E.NewBuilder(). 84 | WithKeyCondition(E.KeyEqual(E.Key(kAttrSubjectName), E.Value(subjectName))). 85 | WithFilter(E.GreaterThan(E.Key(kAttrValidUntil), E.Value(time.Now().UTC().Unix()))). 86 | Build() 87 | if err != nil { 88 | return nil, err 89 | } 90 | 91 | query := dynamodb.QueryInput{ 92 | TableName: aws.String(configAWSPKI.TableName), 93 | IndexName: aws.String(kIndexSubjectName), 94 | 95 | ExpressionAttributeNames: exp.Names(), 96 | ExpressionAttributeValues: exp.Values(), 97 | KeyConditionExpression: exp.KeyCondition(), 98 | FilterExpression: exp.Filter(), 99 | 100 | ScanIndexForward: aws.Bool(false), 101 | } 102 | 103 | certs := make([]*pki.CertificateInfo, 0) 104 | if err := s.ddb.QueryPagesWithContext(ctx, &query, func(output *dynamodb.QueryOutput, b bool) bool { 105 | for _, item := range output.Items { 106 | var certEntry dynamoCertEntry 107 | if err := A.UnmarshalMap(item, &certEntry); err != nil { 108 | log.WithError(err).Errorf("error unmarshaling cert") 109 | continue 110 | } 111 | 112 | info, err := certEntry.toCertificateInfo() 113 | if err != nil { 114 | log.WithError(err).Errorf("error parsing certificate") 115 | continue 116 | } 117 | 118 | certs = append(certs, info) 119 | } 120 | 121 | return b 122 | }); err != nil { 123 | return nil, err 124 | } 125 | 126 | return certs, nil 127 | } 128 | 129 | func (s *awsStorage) AddCert(ctx context.Context, cert *x509.Certificate) error { 130 | if cert.Raw == nil { 131 | return errors.New("missing cert raw data") 132 | } 133 | 134 | if cert.AuthorityKeyId == nil { 135 | return errors.New("missing Authority Key ID") 136 | } 137 | 138 | if cert.SubjectKeyId == nil { 139 | return errors.New("missing Subject Key ID") 140 | } 141 | 142 | cType := pki.GetCertType(cert) 143 | if cType == pki.CertTypeUnknown { 144 | return errors.New("unknown certificate type") 145 | } 146 | 147 | entry := dynamoCertEntry{ 148 | SerialNumber: cert.SerialNumber.Bytes(), 149 | AuthorityKeyId: cert.AuthorityKeyId, 150 | SubjectKeyId: cert.SubjectKeyId, 151 | SubjectName: cert.Subject.CommonName, 152 | CertType: string(cType), 153 | IssuedAt: cert.NotBefore.UTC(), 154 | ValidUntil: cert.NotAfter.UTC(), 155 | RevocationTime: time.Unix(0, 0).UTC(), 156 | Data: cert.Raw, 157 | } 158 | 159 | item, err := A.MarshalMap(entry) 160 | if err != nil { 161 | return err 162 | } 163 | 164 | _, err = s.ddb.PutItemWithContext(ctx, &dynamodb.PutItemInput{ 165 | TableName: aws.String(configAWSPKI.TableName), 166 | Item: item, 167 | }) 168 | 169 | return err 170 | } 171 | 172 | func (s *awsStorage) RevokeCert(ctx context.Context, serial []byte) (*pki.CertificateInfo, error) { 173 | expr, err := E.NewBuilder(). 174 | WithCondition(E.Equal(E.Name(kAttrRevocationTime), E.Value(0))). 175 | WithUpdate(E.Set(E.Name(kAttrRevocationTime), E.Value(time.Now().UTC().Unix()))). 176 | Build() 177 | if err != nil { 178 | return nil, err 179 | } 180 | 181 | res, err := s.ddb.UpdateItemWithContext(ctx, &dynamodb.UpdateItemInput{ 182 | TableName: aws.String(configAWSPKI.TableName), 183 | Key: map[string]*dynamodb.AttributeValue{ 184 | kAttrSerialNumber: {B: serial}, 185 | }, 186 | 187 | ExpressionAttributeNames: expr.Names(), 188 | ExpressionAttributeValues: expr.Values(), 189 | ConditionExpression: expr.Condition(), 190 | UpdateExpression: expr.Update(), 191 | 192 | ReturnValues: aws.String(dynamodb.ReturnValueAllNew), 193 | }) 194 | if err != nil { 195 | return nil, err 196 | } 197 | 198 | var certEntry dynamoCertEntry 199 | if err := A.UnmarshalMap(res.Attributes, &certEntry); err != nil { 200 | return nil, err 201 | } 202 | 203 | return certEntry.toCertificateInfo() 204 | } 205 | -------------------------------------------------------------------------------- /pkg/pki/aws/model.go: -------------------------------------------------------------------------------- 1 | package awspki 2 | 3 | import ( 4 | "crypto/x509" 5 | "encoding/hex" 6 | "fmt" 7 | "strings" 8 | "time" 9 | 10 | "github.com/empathybroker/aws-vpn/pkg/pki" 11 | "github.com/pkg/errors" 12 | ) 13 | 14 | const ( 15 | kAttrSerialNumber = "SerialNumber" 16 | kAttrAuthorityKeyId = "AuthorityKeyId" 17 | kAttrSubjectKeyId = "SubjectKeyId" 18 | kAttrSubjectName = "SubjectName" 19 | kAttrCertType = "CertType" 20 | kAttrIssuedAt = "IssuedAt" 21 | kAttrValidUntil = "ValidUntil" 22 | kAttrRevocationTime = "RevocationTime" 23 | kAttrData = "Data" 24 | 25 | kIndexSubjectKeyId = kAttrSubjectKeyId + "Idx" 26 | kIndexSubjectName = kAttrSubjectName + "Idx" 27 | ) 28 | 29 | type dynamoCertEntry struct { 30 | SerialNumber []byte `dynamodbav:",binary"` 31 | AuthorityKeyId []byte `dynamodbav:",binary"` 32 | SubjectKeyId []byte `dynamodbav:",binary"` 33 | SubjectName string `dynamodbav:",string"` 34 | CertType string `dynamodbav:",string"` 35 | IssuedAt time.Time `dynamodbav:",unixtime"` 36 | ValidUntil time.Time `dynamodbav:",unixtime"` 37 | RevocationTime time.Time `dynamodbav:",unixtime"` 38 | Data []byte `dynamodbav:",binary"` 39 | } 40 | 41 | func (e *dynamoCertEntry) toCertificateInfo() (*pki.CertificateInfo, error) { 42 | if e.Data == nil { 43 | return nil, nil 44 | } 45 | 46 | cert, err := x509.ParseCertificate(e.Data) 47 | if err != nil { 48 | return nil, errors.Wrap(err, "parsing certificate") 49 | } 50 | 51 | info := &pki.CertificateInfo{ 52 | Certificate: cert, 53 | SerialBytes: e.SerialNumber, 54 | 55 | CertType: pki.CertType(e.CertType), 56 | Serial: hex.EncodeToString(e.SerialNumber), 57 | KeyId: hex.EncodeToString(e.SubjectKeyId), 58 | Subject: e.SubjectName, 59 | NotBefore: e.IssuedAt.UTC(), 60 | NotAfter: e.ValidUntil.UTC(), 61 | } 62 | 63 | if e.RevocationTime.Unix() > 0 { 64 | rt := e.RevocationTime.UTC() 65 | info.Revoked = &rt 66 | } 67 | 68 | return info, err 69 | } 70 | 71 | func (e dynamoCertEntry) String() string { 72 | vals := []string{ 73 | fmt.Sprintf("SerialNumber:%s", hex.EncodeToString(e.SerialNumber)), 74 | fmt.Sprintf("AuthorityKeyId:%s", hex.EncodeToString(e.AuthorityKeyId)), 75 | fmt.Sprintf("SubjectKeyId:%s", hex.EncodeToString(e.SubjectKeyId)), 76 | fmt.Sprintf("SubjectName:%s", e.SubjectName), 77 | fmt.Sprintf("CertType:%s", e.CertType), 78 | fmt.Sprintf("IssuedAt:%s", e.IssuedAt), 79 | fmt.Sprintf("ValidUntil:%s", e.ValidUntil), 80 | fmt.Sprintf("RevocationTime:%s", e.RevocationTime), 81 | } 82 | 83 | return fmt.Sprintf("{%s}", strings.Join(vals, ", ")) 84 | } 85 | 86 | type RevokedCert struct { 87 | SerialNumber []byte 88 | RevocationTime time.Time 89 | } 90 | -------------------------------------------------------------------------------- /pkg/pki/aws/secrets.go: -------------------------------------------------------------------------------- 1 | package awspki 2 | 3 | import ( 4 | "context" 5 | "crypto" 6 | "crypto/x509" 7 | "time" 8 | 9 | "github.com/aws/aws-sdk-go/aws" 10 | "github.com/aws/aws-sdk-go/service/secretsmanager" 11 | "github.com/empathybroker/aws-vpn/pkg/pki" 12 | log "github.com/sirupsen/logrus" 13 | ) 14 | 15 | func (s *awsStorage) maybeUpdate(ctx context.Context) { 16 | if time.Now().After(s.exp) { 17 | log.Debug("Updating CA secrets") 18 | res, err := s.sm.GetSecretValueWithContext(ctx, &secretsmanager.GetSecretValueInput{ 19 | SecretId: aws.String(configAWSPKI.SecretName), 20 | }) 21 | if err != nil { 22 | log.WithError(err).Error("Fetching CA Key") 23 | return 24 | } 25 | 26 | if err := s.data.UnmarshalJSON(res.SecretBinary); err != nil { 27 | log.WithError(err).Error("Unmarshalling CA Key") 28 | return 29 | } 30 | 31 | s.exp = time.Now().Add(1 * time.Minute) 32 | } 33 | } 34 | 35 | func (s *awsStorage) GetCACert(ctx context.Context) *x509.Certificate { 36 | s.mut.Lock() 37 | defer s.mut.Unlock() 38 | s.maybeUpdate(ctx) 39 | 40 | return s.data.CACert 41 | } 42 | 43 | func (s *awsStorage) GetPrevCACert(ctx context.Context) *x509.Certificate { 44 | s.mut.Lock() 45 | defer s.mut.Unlock() 46 | s.maybeUpdate(ctx) 47 | 48 | return s.data.PrevCACert 49 | } 50 | 51 | func (s *awsStorage) GetCrossCert(ctx context.Context) *x509.Certificate { 52 | s.mut.Lock() 53 | defer s.mut.Unlock() 54 | s.maybeUpdate(ctx) 55 | 56 | return s.data.CrossCert 57 | } 58 | 59 | func (s *awsStorage) GetPrivateKey(ctx context.Context) crypto.PrivateKey { 60 | s.mut.Lock() 61 | defer s.mut.Unlock() 62 | s.maybeUpdate(ctx) 63 | 64 | return s.data.PrivateKey 65 | } 66 | 67 | func (s *awsStorage) GetPublicKey(ctx context.Context) crypto.PublicKey { 68 | s.mut.Lock() 69 | defer s.mut.Unlock() 70 | s.maybeUpdate(ctx) 71 | 72 | return s.data.PublicKey 73 | } 74 | 75 | func (s *awsStorage) GetStaticKey(ctx context.Context) pki.StaticKey { 76 | s.mut.Lock() 77 | defer s.mut.Unlock() 78 | s.maybeUpdate(ctx) 79 | 80 | return s.data.StaticKey 81 | } 82 | -------------------------------------------------------------------------------- /pkg/pki/cakey.go: -------------------------------------------------------------------------------- 1 | package pki 2 | 3 | import ( 4 | "crypto" 5 | "crypto/x509" 6 | "crypto/x509/pkix" 7 | "encoding/json" 8 | "time" 9 | 10 | "github.com/pkg/errors" 11 | jose "gopkg.in/square/go-jose.v2" 12 | ) 13 | 14 | type CAData struct { 15 | PrivateKey crypto.PrivateKey 16 | PublicKey crypto.PublicKey 17 | 18 | CACert *x509.Certificate 19 | PrevCACert *x509.Certificate 20 | CrossCert *x509.Certificate 21 | 22 | StaticKey StaticKey 23 | } 24 | 25 | type storedCAData struct { 26 | PrivateKey jose.JSONWebKey `json:"key"` 27 | 28 | CACert []byte `json:"ca"` 29 | PrevCACert []byte `json:"pca,omitempty"` 30 | CrossCert []byte `json:"xca,omitempty"` 31 | StaticKey []byte `json:"ovpn"` 32 | } 33 | 34 | func (k *CAData) UnmarshalJSON(data []byte) error { 35 | var stored storedCAData 36 | if err := json.Unmarshal(data, &stored); err != nil { 37 | return errors.Wrap(err, "unmarshal CA data") 38 | } 39 | 40 | parsed, err := x509.ParseCertificate(stored.CACert) 41 | if err != nil { 42 | return errors.Wrap(err, "parsing CA certificate") 43 | } 44 | k.CACert = parsed 45 | 46 | if len(stored.PrevCACert) > 0 { 47 | k.PrevCACert, err = x509.ParseCertificate(stored.PrevCACert) 48 | if err != nil { 49 | return errors.Wrap(err, "parsing old CA certificate") 50 | } 51 | } 52 | 53 | if len(stored.CrossCert) > 0 { 54 | k.CrossCert, err = x509.ParseCertificate(stored.CrossCert) 55 | if err != nil { 56 | return errors.Wrap(err, "parsing cross-signed CA certificate") 57 | } 58 | } 59 | 60 | var ok bool 61 | if k.PrivateKey, ok = stored.PrivateKey.Key.(crypto.PrivateKey); !ok { 62 | return errors.New("unexpected privateKey type") 63 | } 64 | 65 | if k.PublicKey, ok = stored.PrivateKey.Public().Key.(crypto.PublicKey); !ok { 66 | return errors.New("unexpected publicKey type") 67 | } 68 | 69 | k.StaticKey = stored.StaticKey 70 | 71 | return nil 72 | } 73 | 74 | func (k CAData) MarshalJSON() ([]byte, error) { 75 | s := storedCAData{ 76 | PrivateKey: jose.JSONWebKey{Key: k.PrivateKey}, 77 | CACert: k.CACert.Raw, 78 | StaticKey: k.StaticKey, 79 | } 80 | 81 | if k.PrevCACert != nil { 82 | s.PrevCACert = k.PrevCACert.Raw 83 | } 84 | 85 | if k.CrossCert != nil { 86 | s.CrossCert = k.CrossCert.Raw 87 | } 88 | 89 | return json.Marshal(s) 90 | } 91 | 92 | func NewCAKey(caName string, serialNumber string, duration time.Duration) (CAData, error) { 93 | privKey, err := NewPrivateKey() 94 | if err != nil { 95 | return CAData{}, errors.Wrap(err, "error generating key") 96 | } 97 | 98 | pkiName := pkix.Name{CommonName: caName, SerialNumber: serialNumber} 99 | caCert, err := CreateCertificate(nil, privKey, GetPublicKey(privKey), pkiName, CACert, WithDuration(duration), WithMaxPathLen(1)) 100 | if err != nil { 101 | return CAData{}, errors.Wrap(err, "error signing certificate key") 102 | } 103 | 104 | return CAData{ 105 | PrivateKey: privKey, 106 | PublicKey: GetPublicKey(privKey), 107 | CACert: caCert, 108 | PrevCACert: nil, 109 | CrossCert: nil, 110 | StaticKey: NewStaticKey(), 111 | }, nil 112 | } 113 | 114 | func (k CAData) Renew(caName string, serialNumber string, duration time.Duration) (CAData, error) { 115 | privKey, err := NewPrivateKey() 116 | if err != nil { 117 | return CAData{}, errors.Wrap(err, "error generating key") 118 | } 119 | 120 | pkiName := pkix.Name{CommonName: caName, SerialNumber: serialNumber} 121 | caCert, err := CreateCertificate(nil, privKey, GetPublicKey(privKey), pkiName, CACert, WithDuration(duration), WithMaxPathLen(1)) 122 | if err != nil { 123 | return CAData{}, errors.Wrap(err, "error signing CA certificate") 124 | } 125 | 126 | crossCert, err := CreateCertificate(k.CACert, k.PrivateKey, GetPublicKey(privKey), pkiName, CACert, WithExpiration(k.CACert.NotAfter), WithMaxPathLen(0)) 127 | if err != nil { 128 | return CAData{}, errors.Wrap(err, "error cross-signing CA certificate") 129 | } 130 | 131 | return CAData{ 132 | PrivateKey: privKey, 133 | PublicKey: GetPublicKey(privKey), 134 | CACert: caCert, 135 | PrevCACert: k.CACert, 136 | CrossCert: crossCert, 137 | StaticKey: k.StaticKey, 138 | }, nil 139 | } 140 | -------------------------------------------------------------------------------- /pkg/pki/cakey_test.go: -------------------------------------------------------------------------------- 1 | package pki 2 | 3 | import ( 4 | "encoding/json" 5 | "os" 6 | "testing" 7 | "time" 8 | 9 | "github.com/google/uuid" 10 | "github.com/sirupsen/logrus" 11 | ) 12 | 13 | func init() { 14 | logrus.SetLevel(logrus.DebugLevel) 15 | 16 | if err := os.Setenv("PKI_KEY_TYPE", "RSA"); err != nil { 17 | panic(err) 18 | } 19 | } 20 | 21 | const ( 22 | kCAName = "EmpathyBroker VPN" 23 | kDuration = 90 * 24 * time.Hour 24 | ) 25 | 26 | func TestNewCAKey(t *testing.T) { 27 | if err := os.Setenv("PKI_KEY_TYPE", "RSA"); err != nil { 28 | t.Fatal(err) 29 | } 30 | 31 | caKey, err := NewCAKey(kCAName, uuid.New().String(), kDuration) 32 | if err != nil { 33 | t.Fatalf("%+v", err) 34 | } 35 | 36 | rCaKey, err := caKey.Renew(kCAName, uuid.New().String(), kDuration) 37 | if err != nil { 38 | t.Fatal(err) 39 | } 40 | 41 | caData, err := json.Marshal(caKey) 42 | if err != nil { 43 | t.Fatal(err) 44 | } 45 | 46 | t.Log(len(caData), string(caData)) 47 | 48 | rCaData, err := json.Marshal(rCaKey) 49 | if err != nil { 50 | t.Fatal(err) 51 | } 52 | 53 | t.Log(len(rCaData), string(rCaData)) 54 | } 55 | 56 | func TestRenewSize(t *testing.T) { 57 | maxSize := 7 * 1024 58 | 59 | max := []int{0, 0, 0} 60 | 61 | for i := 0; i < 10; i++ { 62 | caKey, err := NewCAKey(kCAName, uuid.New().String(), kDuration) 63 | if err != nil { 64 | t.Fatal(err) 65 | } 66 | 67 | caData, err := json.Marshal(caKey) 68 | if err != nil { 69 | t.Fatal(err) 70 | } 71 | 72 | if len(caData) > max[0] { 73 | max[0] = len(caData) 74 | } 75 | // t.Log(0, len(caData)) 76 | 77 | caKey, err = caKey.Renew(kCAName, uuid.New().String(), kDuration) 78 | if err != nil { 79 | t.Fatal(err) 80 | } 81 | 82 | caData, err = json.Marshal(caKey) 83 | if err != nil { 84 | t.Fatal(err) 85 | } 86 | 87 | if len(caData) > max[1] { 88 | max[1] = len(caData) 89 | } 90 | t.Log(1, len(caData), string(caData)) 91 | 92 | if len(caData) > maxSize { 93 | t.Fatalf("%d > %d", len(caData), maxSize) 94 | } 95 | } 96 | 97 | t.Log(max) 98 | 99 | } 100 | -------------------------------------------------------------------------------- /pkg/pki/certs.go: -------------------------------------------------------------------------------- 1 | package pki 2 | 3 | import ( 4 | "crypto" 5 | "crypto/rand" 6 | "crypto/x509" 7 | "crypto/x509/pkix" 8 | ) 9 | 10 | func CreateCertificate(parent *x509.Certificate, privKey crypto.PrivateKey, pubKey crypto.PublicKey, subject pkix.Name, certOpts ...CertOptions) (*x509.Certificate, error) { 11 | ski, err := getSKI(pubKey) 12 | if err != nil { 13 | return nil, err 14 | } 15 | 16 | template := &x509.Certificate{ 17 | Subject: subject, 18 | SerialNumber: randomSerial(), 19 | PublicKey: pubKey, 20 | SubjectKeyId: ski, 21 | } 22 | 23 | for _, opt := range certOpts { 24 | opt(template) 25 | } 26 | 27 | if parent == nil { 28 | parent = template 29 | } 30 | 31 | certData, err := x509.CreateCertificate(rand.Reader, template, parent, pubKey, privKey) 32 | if err != nil { 33 | return nil, err 34 | } 35 | 36 | return x509.ParseCertificate(certData) 37 | } 38 | -------------------------------------------------------------------------------- /pkg/pki/model.go: -------------------------------------------------------------------------------- 1 | package pki 2 | 3 | import ( 4 | "context" 5 | "crypto" 6 | "crypto/x509" 7 | "encoding/hex" 8 | "time" 9 | ) 10 | 11 | type CertificateInfo struct { 12 | Certificate *x509.Certificate `json:"-"` 13 | SerialBytes []byte `json:"-"` 14 | 15 | CertType CertType `json:"type"` 16 | Serial string `json:"serial"` 17 | KeyId string `json:"keyId"` 18 | Subject string `json:"subject"` 19 | NotBefore time.Time `json:"notBefore"` 20 | NotAfter time.Time `json:"notAfter"` 21 | Revoked *time.Time `json:"revoked,omitempty"` 22 | } 23 | 24 | func CertInfoFromX509Cert(cert *x509.Certificate) *CertificateInfo { 25 | return &CertificateInfo{ 26 | Certificate: cert, 27 | SerialBytes: cert.SerialNumber.Bytes(), 28 | 29 | CertType: GetCertType(cert), 30 | Serial: hex.EncodeToString(cert.SerialNumber.Bytes()), 31 | KeyId: hex.EncodeToString(cert.SubjectKeyId), 32 | Subject: cert.Subject.CommonName, 33 | NotBefore: cert.NotBefore, 34 | NotAfter: cert.NotAfter, 35 | Revoked: nil, 36 | } 37 | } 38 | 39 | type PKIStorage interface { 40 | GetCACert(ctx context.Context) *x509.Certificate 41 | GetPrevCACert(ctx context.Context) *x509.Certificate 42 | GetCrossCert(ctx context.Context) *x509.Certificate 43 | GetPrivateKey(ctx context.Context) crypto.PrivateKey 44 | GetPublicKey(ctx context.Context) crypto.PublicKey 45 | GetStaticKey(ctx context.Context) StaticKey 46 | 47 | AddCert(ctx context.Context, cert *x509.Certificate) error 48 | ListAllCerts(ctx context.Context) ([]*CertificateInfo, error) 49 | ListCertsBySubject(context.Context, string) ([]*CertificateInfo, error) 50 | GetCertBySerial(context.Context, []byte) (*CertificateInfo, error) 51 | RevokeCert(context.Context, []byte) (*CertificateInfo, error) 52 | } 53 | -------------------------------------------------------------------------------- /pkg/pki/options.go: -------------------------------------------------------------------------------- 1 | package pki 2 | 3 | import ( 4 | "crypto/x509" 5 | "time" 6 | ) 7 | 8 | type CertOptions func(cert *x509.Certificate) 9 | 10 | func CACert(cert *x509.Certificate) { 11 | cert.IsCA = true 12 | cert.BasicConstraintsValid = true 13 | cert.KeyUsage = x509.KeyUsageCertSign | x509.KeyUsageCRLSign 14 | cert.ExtKeyUsage = nil 15 | } 16 | 17 | func ClientCert(cert *x509.Certificate) { 18 | cert.IsCA = false 19 | cert.BasicConstraintsValid = true 20 | cert.KeyUsage = x509.KeyUsageDigitalSignature 21 | cert.ExtKeyUsage = []x509.ExtKeyUsage{x509.ExtKeyUsageClientAuth} 22 | } 23 | 24 | func ServerCert(cert *x509.Certificate) { 25 | cert.IsCA = false 26 | cert.BasicConstraintsValid = true 27 | cert.KeyUsage = x509.KeyUsageDigitalSignature | x509.KeyUsageKeyEncipherment 28 | cert.ExtKeyUsage = []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth} 29 | } 30 | 31 | func WithTimespan(notBefore time.Time, notAfter time.Time) CertOptions { 32 | return func(cert *x509.Certificate) { 33 | cert.NotBefore = notBefore 34 | cert.NotAfter = notAfter 35 | } 36 | } 37 | 38 | func WithDuration(duration time.Duration) CertOptions { 39 | notBefore := time.Now() 40 | return WithTimespan(notBefore, notBefore.Add(duration)) 41 | } 42 | 43 | func WithExpiration(notAfter time.Time) CertOptions { 44 | return WithTimespan(time.Now(), notAfter) 45 | } 46 | 47 | func WithMaxPathLen(pathLen int) CertOptions { 48 | return func(cert *x509.Certificate) { 49 | cert.MaxPathLen = pathLen 50 | cert.MaxPathLenZero = pathLen == 0 51 | } 52 | } 53 | 54 | func WithEmail(email ...string) CertOptions { 55 | return func(cert *x509.Certificate) { 56 | cert.EmailAddresses = email 57 | } 58 | } 59 | 60 | func WithDNS(dnsName ...string) CertOptions { 61 | return func(cert *x509.Certificate) { 62 | cert.DNSNames = dnsName 63 | } 64 | } 65 | -------------------------------------------------------------------------------- /pkg/pki/pki.go: -------------------------------------------------------------------------------- 1 | package pki 2 | 3 | import ( 4 | "context" 5 | "crypto" 6 | "crypto/x509" 7 | "crypto/x509/pkix" 8 | 9 | "github.com/pkg/errors" 10 | ) 11 | 12 | type PKI struct { 13 | storage PKIStorage 14 | } 15 | 16 | func NewPKI(s PKIStorage) *PKI { 17 | return &PKI{ 18 | storage: s, 19 | } 20 | } 21 | 22 | func (pki *PKI) GetCACert(ctx context.Context) *x509.Certificate { 23 | return pki.storage.GetCACert(ctx) 24 | } 25 | 26 | func (pki *PKI) GetPrevCACert(ctx context.Context) *x509.Certificate { 27 | return pki.storage.GetPrevCACert(ctx) 28 | } 29 | 30 | func (pki *PKI) GetCrossCert(ctx context.Context) *x509.Certificate { 31 | return pki.storage.GetCrossCert(ctx) 32 | } 33 | 34 | func (pki *PKI) GetStaticKey(ctx context.Context) StaticKey { 35 | return pki.storage.GetStaticKey(ctx) 36 | } 37 | 38 | func (pki *PKI) CreateCertificate(ctx context.Context, pubKey crypto.PublicKey, subject pkix.Name, certOpts ...CertOptions) (*CertificateInfo, error) { 39 | cert, err := CreateCertificate(pki.storage.GetCACert(ctx), pki.storage.GetPrivateKey(ctx), pubKey, subject, certOpts...) 40 | if err != nil { 41 | return nil, errors.Wrap(err, "creating certificate") 42 | } 43 | 44 | if err := pki.storage.AddCert(ctx, cert); err != nil { 45 | return nil, errors.Wrap(err, "storing certificate") 46 | } 47 | 48 | return CertInfoFromX509Cert(cert), nil 49 | } 50 | 51 | func (pki *PKI) GetCertBySerial(ctx context.Context, serial []byte) (*CertificateInfo, error) { 52 | return pki.storage.GetCertBySerial(ctx, serial) 53 | } 54 | 55 | func (pki *PKI) ListCerts(ctx context.Context, subject string) ([]*CertificateInfo, error) { 56 | if subject == "" { 57 | return pki.storage.ListAllCerts(ctx) 58 | } 59 | return pki.storage.ListCertsBySubject(ctx, subject) 60 | } 61 | 62 | func (pki *PKI) RevokeCert(ctx context.Context, serial []byte) (*CertificateInfo, error) { 63 | return pki.storage.RevokeCert(ctx, serial) 64 | } 65 | -------------------------------------------------------------------------------- /pkg/pki/statickey.go: -------------------------------------------------------------------------------- 1 | package pki 2 | 3 | import ( 4 | "bytes" 5 | "crypto/rand" 6 | "encoding/hex" 7 | "fmt" 8 | ) 9 | 10 | const ( 11 | kStaticKeyBits = 2048 12 | ) 13 | 14 | type StaticKey []byte 15 | 16 | func NewStaticKey() StaticKey { 17 | buf := make([]byte, kStaticKeyBits/8) 18 | if _, err := rand.Read(buf); err != nil { 19 | panic(err) 20 | } 21 | return StaticKey(buf) 22 | } 23 | 24 | func (k StaticKey) String() string { 25 | var buf bytes.Buffer 26 | 27 | buf.WriteString(fmt.Sprintf("#\n# %d bit OpenVPN static key\n#\n", 8*len(k))) 28 | buf.WriteString("-----BEGIN OpenVPN Static key V1-----\n") 29 | 30 | hexEnc := hex.NewEncoder(&buf) 31 | for i := 0; i < len(k); i += 16 { 32 | if _, err := hexEnc.Write(k[i : i+16]); err != nil { 33 | panic(err) 34 | } 35 | buf.WriteByte('\n') 36 | } 37 | 38 | buf.WriteString("-----END OpenVPN Static key V1-----\n") 39 | 40 | return buf.String() 41 | } 42 | -------------------------------------------------------------------------------- /pkg/pki/utils.go: -------------------------------------------------------------------------------- 1 | package pki 2 | 3 | import ( 4 | "crypto" 5 | "crypto/ecdsa" 6 | "crypto/elliptic" 7 | "crypto/rand" 8 | "crypto/rsa" 9 | "crypto/sha1" 10 | "crypto/x509" 11 | "crypto/x509/pkix" 12 | "encoding/asn1" 13 | "encoding/hex" 14 | "encoding/pem" 15 | "math/big" 16 | "os" 17 | 18 | "github.com/pkg/errors" 19 | log "github.com/sirupsen/logrus" 20 | ) 21 | 22 | type CertSerial *big.Int 23 | type CertType string 24 | 25 | const ( 26 | CertTypeUnknown CertType = "UNKNOWN" 27 | CertTypeServer = "Server" 28 | CertTypeClient = "Client" 29 | CertTypeCA = "CA" 30 | ) 31 | 32 | var kSerialMaxValue = new(big.Int).Lsh(big.NewInt(1), 128) 33 | 34 | func DecodeSerial(serial string) ([]byte, error) { 35 | decoded, err := hex.DecodeString(serial) 36 | if err != nil { 37 | return nil, err 38 | } 39 | 40 | res := big.NewInt(0).SetBytes(decoded) 41 | if res.Cmp(kSerialMaxValue) > 0 { 42 | return nil, errors.New("serial out of range") 43 | } 44 | 45 | return res.Bytes(), nil 46 | } 47 | 48 | func randomSerial() CertSerial { 49 | serial, err := rand.Int(rand.Reader, kSerialMaxValue) 50 | if err != nil { 51 | log.WithError(err).Fatal("failed to generate serial number") 52 | } 53 | return serial 54 | } 55 | 56 | func getSKI(key crypto.PublicKey) ([]byte, error) { 57 | keyASN, err := x509.MarshalPKIXPublicKey(key) 58 | var spki struct { 59 | Algo pkix.AlgorithmIdentifier 60 | BitString asn1.BitString 61 | } 62 | 63 | if rest, err := asn1.Unmarshal(keyASN, &spki); err != nil { 64 | return nil, errors.WithStack(err) 65 | } else if len(rest) > 0 { 66 | return nil, errors.Errorf("unexpected %d remaining bytes", len(rest)) 67 | } 68 | 69 | h := sha1.Sum(spki.BitString.Bytes) 70 | return h[:], err 71 | } 72 | 73 | func EncodePEMCert(cert *x509.Certificate) []byte { 74 | return pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: cert.Raw}) 75 | } 76 | 77 | func EncodeDERPrivateKey(key crypto.PrivateKey) ([]byte, error) { 78 | switch key := key.(type) { 79 | case *rsa.PrivateKey: 80 | return x509.MarshalPKCS1PrivateKey(key), nil 81 | case *ecdsa.PrivateKey: 82 | return x509.MarshalECPrivateKey(key) 83 | default: 84 | return nil, errors.New("unsupported key type") 85 | } 86 | } 87 | 88 | func EncodePEMPrivateKey(key crypto.PrivateKey) ([]byte, error) { 89 | derBytes, err := EncodeDERPrivateKey(key) 90 | if err != nil { 91 | return nil, errors.Wrap(err, "encoding private key") 92 | } 93 | 94 | var block pem.Block 95 | switch key.(type) { 96 | case *rsa.PrivateKey: 97 | block = pem.Block{Type: "RSA PRIVATE KEY", Bytes: derBytes} 98 | case *ecdsa.PrivateKey: 99 | block = pem.Block{Type: "EC PRIVATE KEY", Bytes: derBytes} 100 | default: 101 | return nil, errors.New("unsupported key type") 102 | } 103 | 104 | return pem.EncodeToMemory(&block), nil 105 | } 106 | 107 | func NewPrivateKey() (crypto.PrivateKey, error) { 108 | switch os.Getenv("PKI_KEY_TYPE") { 109 | case "RSA": 110 | return rsa.GenerateKey(rand.Reader, 2048) 111 | case "EC": 112 | return ecdsa.GenerateKey(elliptic.P256(), rand.Reader) 113 | default: 114 | return nil, errors.New("invalid PKI_KEY_TYPE") 115 | } 116 | } 117 | 118 | func GetPublicKey(key crypto.PrivateKey) crypto.PublicKey { 119 | switch key := key.(type) { 120 | case *rsa.PrivateKey: 121 | return key.Public() 122 | case *ecdsa.PrivateKey: 123 | return key.Public() 124 | default: 125 | panic("unsupported key type") 126 | } 127 | } 128 | 129 | func GetCertType(cert *x509.Certificate) CertType { 130 | if cert.IsCA { 131 | return CertTypeCA 132 | } 133 | 134 | for _, eku := range cert.ExtKeyUsage { 135 | if eku == x509.ExtKeyUsageServerAuth { 136 | return CertTypeServer 137 | } 138 | if eku == x509.ExtKeyUsageClientAuth { 139 | return CertTypeClient 140 | } 141 | } 142 | 143 | return CertTypeUnknown 144 | } 145 | --------------------------------------------------------------------------------