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// Copyright 2021 The Prometheus Authors
// 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 sigv4
import (
"context"
"io"
"net/http"
"os"
"strings"
"testing"
"github.com/aws/aws-sdk-go-v2/aws"
signer "github.com/aws/aws-sdk-go-v2/aws/signer/v4"
"github.com/aws/aws-sdk-go-v2/config"
"github.com/aws/aws-sdk-go-v2/credentials"
"github.com/stretchr/testify/require"
)
type RoundTripperFunc func(req *http.Request) (*http.Response, error)
// RoundTrip implements the RoundTripper interface.
func (rt RoundTripperFunc) RoundTrip(r *http.Request) (*http.Response, error) {
return rt(r)
}
func TestSigV4_Inferred_Region(t *testing.T) {
os.Setenv("AWS_ACCESS_KEY_ID", "secret")
os.Setenv("AWS_SECRET_ACCESS_KEY", "token")
os.Setenv("AWS_REGION", "us-west-2")
ctx := context.TODO()
awscfg, err := config.LoadDefaultConfig(
ctx,
config.WithRegion(""),
)
require.NoError(t, err)
_, err = awscfg.Credentials.Retrieve(ctx)
require.NoError(t, err)
require.NotNil(t, awscfg.Region)
require.Equal(t, "us-west-2", awscfg.Region)
}
func TestSigV4RoundTripper(t *testing.T) {
var gotReq *http.Request
awscfg, _ := config.LoadDefaultConfig(
ctx,
config.WithCredentialsProvider(
credentials.NewStaticCredentialsProvider("AccessKey", "SecretKey", "token")),
config.WithRegion("us-east-2"),
)
rt := &sigV4RoundTripper{
region: "us-east-2",
next: RoundTripperFunc(func(req *http.Request) (*http.Response, error) {
gotReq = req
return &http.Response{StatusCode: http.StatusOK}, nil
}),
creds: aws.NewCredentialsCache(awscfg.Credentials),
signer: signer.NewSigner(),
}
rt.pool.New = rt.newBuf
cli := &http.Client{Transport: rt}
req, err := http.NewRequest(http.MethodPost, "https://example.com", strings.NewReader("Hello, world!"))
require.NoError(t, err)
_, err = cli.Do(req)
require.NoError(t, err)
require.NotNil(t, gotReq)
origReq := gotReq
require.NotEmpty(t, origReq.Header.Get("Authorization"))
require.NotEmpty(t, origReq.Header.Get("X-Amz-Date"))
// Perform the same request but with a header that shouldn't included in the
// signature; validate that the Authorization signature matches.
t.Run("Ignored Headers", func(t *testing.T) {
req, err := http.NewRequest(http.MethodPost, "https://example.com", strings.NewReader("Hello, world!"))
require.NoError(t, err)
req.Header.Add("Uber-Trace-Id", "some-trace-id")
_, err = cli.Do(req)
require.NoError(t, err)
require.NotNil(t, gotReq)
// Validate that the transport is able to consume the body
data, err := io.ReadAll(gotReq.Body)
require.NoError(t, err)
require.Equal(t, "Hello, world!", string(data))
require.Equal(t, origReq.Header.Get("Authorization"), gotReq.Header.Get("Authorization"))
})
t.Run("Escape URL", func(t *testing.T) {
req, err := http.NewRequest(http.MethodPost, "https://example.com/test//test", strings.NewReader("Hello, world!"))
require.NoError(t, err)
require.Equal(t, "/test//test", req.URL.Path)
_, err = cli.Do(req)
require.NoError(t, err)
require.NotNil(t, gotReq)
// Validate that the transport is able to consume the body
_, err = io.ReadAll(gotReq.Body)
require.NoError(t, err)
require.Equal(t, "/test/test", gotReq.URL.Path)
})
t.Run("No body", func(t *testing.T) {
req, err := http.NewRequest(http.MethodGet, "https://example.com/test/test", nil)
require.NoError(t, err)
_, err = cli.Do(req)
require.Nil(t, req.Body)
require.NoError(t, err)
})
}
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