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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,160 @@ | ||
| /* | ||
| Copyright 2022 Gravitational, Inc. | ||
| 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 | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| 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. | ||
| */ | ||
|
|
||
| package aws | ||
|
|
||
| import ( | ||
| "net/http" | ||
| "strings" | ||
|
|
||
| "github.com/aws/aws-sdk-go/aws/endpoints" | ||
| "github.com/aws/aws-sdk-go/service/appstream" | ||
| "github.com/aws/aws-sdk-go/service/detective" | ||
| "github.com/aws/aws-sdk-go/service/ecr" | ||
| "github.com/aws/aws-sdk-go/service/ecrpublic" | ||
| "github.com/aws/aws-sdk-go/service/elasticinference" | ||
| "github.com/aws/aws-sdk-go/service/iot1clickdevicesservice" | ||
| "github.com/aws/aws-sdk-go/service/iotdataplane" | ||
| "github.com/aws/aws-sdk-go/service/iotdeviceadvisor" | ||
| "github.com/aws/aws-sdk-go/service/ioteventsdata" | ||
| "github.com/aws/aws-sdk-go/service/iotfleethub" | ||
| "github.com/aws/aws-sdk-go/service/iotjobsdataplane" | ||
| "github.com/aws/aws-sdk-go/service/iotsecuretunneling" | ||
| "github.com/aws/aws-sdk-go/service/iottwinmaker" | ||
| "github.com/aws/aws-sdk-go/service/iotwireless" | ||
| "github.com/aws/aws-sdk-go/service/lexmodelsv2" | ||
| "github.com/aws/aws-sdk-go/service/marketplacecatalog" | ||
| "github.com/aws/aws-sdk-go/service/mediatailor" | ||
| "github.com/aws/aws-sdk-go/service/memorydb" | ||
| "github.com/aws/aws-sdk-go/service/migrationhubstrategyrecommendations" | ||
| "github.com/aws/aws-sdk-go/service/mobile" | ||
| "github.com/aws/aws-sdk-go/service/pinpoint" | ||
| "github.com/aws/aws-sdk-go/service/pinpointsmsvoice" | ||
| "github.com/aws/aws-sdk-go/service/pricing" | ||
| "github.com/aws/aws-sdk-go/service/proton" | ||
| "github.com/aws/aws-sdk-go/service/sagemaker" | ||
| "github.com/aws/aws-sdk-go/service/ses" | ||
| "github.com/aws/aws-sdk-go/service/sso" | ||
| "github.com/aws/aws-sdk-go/service/ssooidc" | ||
| "github.com/aws/aws-sdk-go/service/timestreamquery" | ||
|
|
||
| awsutils "github.com/gravitational/teleport/lib/utils/aws" | ||
|
|
||
| "github.com/gravitational/trace" | ||
| ) | ||
|
|
||
| // resolveEndpoint extracts the aws-service on and aws-region from the request | ||
| // authorization header and resolves the aws-service and aws-region to AWS | ||
| // endpoint. | ||
| func resolveEndpoint(r *http.Request) (*endpoints.ResolvedEndpoint, error) { | ||
| awsAuthHeader, err := awsutils.ParseSigV4(r.Header.Get(awsutils.AuthorizationHeader)) | ||
| if err != nil { | ||
| return nil, trace.Wrap(err) | ||
| } | ||
|
|
||
| // aws-sdk-go maintains a mapping of service endpoints which can be looked | ||
| // up by calling `endpoints.DefaultResolver().EndpointFor`. This mapping | ||
| // can be found at: | ||
| // https://github.com/aws/aws-sdk-go/blob/main/aws/endpoints/defaults.go | ||
| // | ||
| // The json equivalent can be found in botocore source code at: | ||
| // https://github.com/boto/botocore/blob/develop/botocore/data/endpoints.json | ||
| // | ||
| // The keys used for lookups are endpoints IDs, which can be different from | ||
| // the signing names. We have to translate the signing name received from | ||
| // the header back to the endpoints ID. | ||
| // | ||
| // In addition, many services are NOT found in aws-sdk-go's endpoints | ||
| // mapping. How aws-sdk-go resolves endpoints for these services is to | ||
| // allow ResolveUnknownService when creating the client sessions, which in | ||
| // turn generates the endpoint by using the endpoints ID and some default | ||
| // suffixes. We allow ResolveUnknownService here for the same purpose. | ||
| endpointsID := endpointsIDFromSigningName(awsAuthHeader.Service) | ||
| opts := func(opts *endpoints.Options) { | ||
| opts.ResolveUnknownService = true | ||
| } | ||
|
|
||
| resolvedEndpoint, err := endpoints.DefaultResolver().EndpointFor(endpointsID, awsAuthHeader.Region, opts) | ||
| if err != nil { | ||
| return nil, trace.Wrap(err) | ||
| } | ||
|
|
||
| // SigningName can be derived from the endpoint ID which may not be the | ||
| // correct signing name. Set it back to what is received from the header. | ||
| resolvedEndpoint.SigningName = awsAuthHeader.Service | ||
| return &resolvedEndpoint, nil | ||
| } | ||
|
|
||
| // endpointsIDFromSigningName returns the endpoints ID used for endpoint | ||
| // lookups when calling endpoints.DefaultResolver().EndpointFor. | ||
| func endpointsIDFromSigningName(signingName string) string { | ||
| // Some clients may sign some services with upper case letters. We use all | ||
| // lower cases in our mapping. | ||
| signingName = strings.ToLower(signingName) | ||
|
|
||
| if endpointsID, ok := signingNameToEndpointsID[signingName]; ok { | ||
| return endpointsID | ||
| } | ||
|
|
||
| // If not found in the mapping, endpoints ID is expected to be the same as | ||
| // the signing name. | ||
| return signingName | ||
| } | ||
|
|
||
| // signingNameToEndpointsID is a map of AWS services' signing names to their | ||
| // endpoints IDs. | ||
| // | ||
| // This mapping was created by the following process: | ||
| // 1. Compiled a mapping of all signing names to their hostnames (e.g. grep/awk | ||
| // keywords in "aws-sdk-go-v2/services/") | ||
| // 2. Created unit test "TestResolveEndpoints" to test each signing name. | ||
| // 3. Investigated the test failures, and updated this mapping to fix them. | ||
| // | ||
| // TODO Many services may sign with same names but use different hostnames. | ||
| // Will need a way to differentiate them. For now, either make the best guess | ||
| // in this mapping or use the default signing names. See signingNameToHostname | ||
| // in endpoints_test.go for conflicting services. | ||
| var signingNameToEndpointsID = map[string]string{ | ||
| "appstream": appstream.EndpointsID, | ||
| "aws-marketplace": marketplacecatalog.EndpointsID, | ||
| "awsiottwinmaker": iottwinmaker.EndpointsID, | ||
| "awsmigrationhubstrategyrecommendation": migrationhubstrategyrecommendations.EndpointsID, | ||
| "awsmobilehubservice": mobile.EndpointsID, | ||
| "awsproton20200720": proton.EndpointsID, | ||
| "awsssooidc": ssooidc.EndpointsID, | ||
| "awsssoportal": sso.EndpointsID, | ||
| "detective": detective.EndpointsID, | ||
| "ecr": ecr.EndpointsID, | ||
| "ecr-public": ecrpublic.EndpointsID, | ||
| "elastic-inference": elasticinference.EndpointsID, | ||
| "iot-jobs-data": iotjobsdataplane.EndpointsID, | ||
| "iot1click": iot1clickdevicesservice.EndpointsID, | ||
| "iotdata": iotdataplane.EndpointsID, | ||
| "iotdeviceadvisor": iotdeviceadvisor.EndpointsID, | ||
| "ioteventsdata": ioteventsdata.EndpointsID, | ||
| "iotfleethub": iotfleethub.EndpointsID, | ||
| "iotsecuredtunneling": iotsecuretunneling.EndpointsID, | ||
| "iotwireless": iotwireless.EndpointsID, | ||
| "lex": lexmodelsv2.EndpointsID, | ||
| "mediatailor": mediatailor.EndpointsID, | ||
| "memorydb": memorydb.EndpointsID, | ||
| "mobiletargeting": pinpoint.EndpointsID, | ||
| "pricing": pricing.EndpointsID, | ||
| "sagemaker": sagemaker.EndpointsID, | ||
| "ses": ses.EndpointsID, | ||
| "sms-voice": pinpointsmsvoice.EndpointsID, | ||
| "timestream": timestreamquery.EndpointsID, | ||
| } |
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