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// Copyright 2021 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package externalaccount
import (
"context"
"encoding/json"
"fmt"
"net/http"
"net/http/httptest"
neturl "net/url"
"reflect"
"strings"
"testing"
"time"
)
var defaultTime = time.Date(2011, 9, 9, 23, 36, 0, 0, time.UTC)
var secondDefaultTime = time.Date(2020, 8, 11, 6, 55, 22, 0, time.UTC)
type validateHeaders func(r *http.Request)
func setTime(testTime time.Time) func() time.Time {
return func() time.Time {
return testTime
}
}
func setEnvironment(env map[string]string) func(string) string {
return func(key string) string {
return env[key]
}
}
var defaultRequestSigner = &awsRequestSigner{
RegionName: "us-east-1",
AwsSecurityCredentials: awsSecurityCredentials{
AccessKeyID: "AKIDEXAMPLE",
SecretAccessKey: "wJalrXUtnFEMI/K7MDENG+bPxRfiCYEXAMPLEKEY",
},
}
const (
accessKeyID = "ASIARD4OQDT6A77FR3CL"
secretAccessKey = "Y8AfSaucF37G4PpvfguKZ3/l7Id4uocLXxX0+VTx"
securityToken = "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"
)
var requestSignerWithToken = &awsRequestSigner{
RegionName: "us-east-2",
AwsSecurityCredentials: awsSecurityCredentials{
AccessKeyID: accessKeyID,
SecretAccessKey: secretAccessKey,
SecurityToken: securityToken,
},
}
func setDefaultTime(req *http.Request) {
// Don't use time.Format for this
// Our output signature expects this to be a Monday, even though Sept 9, 2011 is a Friday
req.Header.Add("date", "Mon, 09 Sep 2011 23:36:00 GMT")
}
func testRequestSigner(t *testing.T, rs *awsRequestSigner, input, expectedOutput *http.Request) {
t.Helper()
err := rs.SignRequest(input)
if err != nil {
t.Errorf("unexpected error: %q", err.Error())
}
if got, want := input.URL.String(), expectedOutput.URL.String(); !reflect.DeepEqual(got, want) {
t.Errorf("url = %q, want %q", got, want)
}
if got, want := input.Method, expectedOutput.Method; !reflect.DeepEqual(got, want) {
t.Errorf("method = %q, want %q", got, want)
}
for header := range expectedOutput.Header {
if got, want := input.Header[header], expectedOutput.Header[header]; !reflect.DeepEqual(got, want) {
t.Errorf("header[%q] = %q, want %q", header, got, want)
}
}
}
func TestAWSv4Signature_GetRequest(t *testing.T) {
input, _ := http.NewRequest("GET", "https://host.foo.com", nil)
setDefaultTime(input)
output, _ := http.NewRequest("GET", "https://host.foo.com", nil)
output.Header = http.Header{
"Host": []string{"host.foo.com"},
"Date": []string{"Mon, 09 Sep 2011 23:36:00 GMT"},
"Authorization": []string{"AWS4-HMAC-SHA256 Credential=AKIDEXAMPLE/20110909/us-east-1/host/aws4_request, SignedHeaders=date;host, Signature=b27ccfbfa7df52a200ff74193ca6e32d4b48b8856fab7ebf1c595d0670a7e470"},
}
oldNow := now
defer func() { now = oldNow }()
now = setTime(defaultTime)
testRequestSigner(t, defaultRequestSigner, input, output)
}
func TestAWSv4Signature_GetRequestWithRelativePath(t *testing.T) {
input, _ := http.NewRequest("GET", "https://host.foo.com/foo/bar/../..", nil)
setDefaultTime(input)
output, _ := http.NewRequest("GET", "https://host.foo.com/foo/bar/../..", nil)
output.Header = http.Header{
"Host": []string{"host.foo.com"},
"Date": []string{"Mon, 09 Sep 2011 23:36:00 GMT"},
"Authorization": []string{"AWS4-HMAC-SHA256 Credential=AKIDEXAMPLE/20110909/us-east-1/host/aws4_request, SignedHeaders=date;host, Signature=b27ccfbfa7df52a200ff74193ca6e32d4b48b8856fab7ebf1c595d0670a7e470"},
}
oldNow := now
defer func() { now = oldNow }()
now = setTime(defaultTime)
testRequestSigner(t, defaultRequestSigner, input, output)
}
func TestAWSv4Signature_GetRequestWithDotPath(t *testing.T) {
input, _ := http.NewRequest("GET", "https://host.foo.com/./", nil)
setDefaultTime(input)
output, _ := http.NewRequest("GET", "https://host.foo.com/./", nil)
output.Header = http.Header{
"Host": []string{"host.foo.com"},
"Date": []string{"Mon, 09 Sep 2011 23:36:00 GMT"},
"Authorization": []string{"AWS4-HMAC-SHA256 Credential=AKIDEXAMPLE/20110909/us-east-1/host/aws4_request, SignedHeaders=date;host, Signature=b27ccfbfa7df52a200ff74193ca6e32d4b48b8856fab7ebf1c595d0670a7e470"},
}
oldNow := now
defer func() { now = oldNow }()
now = setTime(defaultTime)
testRequestSigner(t, defaultRequestSigner, input, output)
}
func TestAWSv4Signature_GetRequestWithPointlessDotPath(t *testing.T) {
input, _ := http.NewRequest("GET", "https://host.foo.com/./foo", nil)
setDefaultTime(input)
output, _ := http.NewRequest("GET", "https://host.foo.com/./foo", nil)
output.Header = http.Header{
"Host": []string{"host.foo.com"},
"Date": []string{"Mon, 09 Sep 2011 23:36:00 GMT"},
"Authorization": []string{"AWS4-HMAC-SHA256 Credential=AKIDEXAMPLE/20110909/us-east-1/host/aws4_request, SignedHeaders=date;host, Signature=910e4d6c9abafaf87898e1eb4c929135782ea25bb0279703146455745391e63a"},
}
oldNow := now
defer func() { now = oldNow }()
now = setTime(defaultTime)
testRequestSigner(t, defaultRequestSigner, input, output)
}
func TestAWSv4Signature_GetRequestWithUtf8Path(t *testing.T) {
input, _ := http.NewRequest("GET", "https://host.foo.com/%E1%88%B4", nil)
setDefaultTime(input)
output, _ := http.NewRequest("GET", "https://host.foo.com/%E1%88%B4", nil)
output.Header = http.Header{
"Host": []string{"host.foo.com"},
"Date": []string{"Mon, 09 Sep 2011 23:36:00 GMT"},
"Authorization": []string{"AWS4-HMAC-SHA256 Credential=AKIDEXAMPLE/20110909/us-east-1/host/aws4_request, SignedHeaders=date;host, Signature=8d6634c189aa8c75c2e51e106b6b5121bed103fdb351f7d7d4381c738823af74"},
}
oldNow := now
defer func() { now = oldNow }()
now = setTime(defaultTime)
testRequestSigner(t, defaultRequestSigner, input, output)
}
func TestAWSv4Signature_GetRequestWithDuplicateQuery(t *testing.T) {
input, _ := http.NewRequest("GET", "https://host.foo.com/?foo=Zoo&foo=aha", nil)
setDefaultTime(input)
output, _ := http.NewRequest("GET", "https://host.foo.com/?foo=Zoo&foo=aha", nil)
output.Header = http.Header{
"Host": []string{"host.foo.com"},
"Date": []string{"Mon, 09 Sep 2011 23:36:00 GMT"},
"Authorization": []string{"AWS4-HMAC-SHA256 Credential=AKIDEXAMPLE/20110909/us-east-1/host/aws4_request, SignedHeaders=date;host, Signature=be7148d34ebccdc6423b19085378aa0bee970bdc61d144bd1a8c48c33079ab09"},
}
oldNow := now
defer func() { now = oldNow }()
now = setTime(defaultTime)
testRequestSigner(t, defaultRequestSigner, input, output)
}
func TestAWSv4Signature_GetRequestWithMisorderedQuery(t *testing.T) {
input, _ := http.NewRequest("GET", "https://host.foo.com/?foo=b&foo=a", nil)
setDefaultTime(input)
output, _ := http.NewRequest("GET", "https://host.foo.com/?foo=b&foo=a", nil)
output.Header = http.Header{
"Host": []string{"host.foo.com"},
"Date": []string{"Mon, 09 Sep 2011 23:36:00 GMT"},
"Authorization": []string{"AWS4-HMAC-SHA256 Credential=AKIDEXAMPLE/20110909/us-east-1/host/aws4_request, SignedHeaders=date;host, Signature=feb926e49e382bec75c9d7dcb2a1b6dc8aa50ca43c25d2bc51143768c0875acc"},
}
oldNow := now
defer func() { now = oldNow }()
now = setTime(defaultTime)
testRequestSigner(t, defaultRequestSigner, input, output)
}
func TestAWSv4Signature_GetRequestWithUtf8Query(t *testing.T) {
input, _ := http.NewRequest("GET", "https://host.foo.com/?ሴ=bar", nil)
setDefaultTime(input)
output, _ := http.NewRequest("GET", "https://host.foo.com/?ሴ=bar", nil)
output.Header = http.Header{
"Host": []string{"host.foo.com"},
"Date": []string{"Mon, 09 Sep 2011 23:36:00 GMT"},
"Authorization": []string{"AWS4-HMAC-SHA256 Credential=AKIDEXAMPLE/20110909/us-east-1/host/aws4_request, SignedHeaders=date;host, Signature=6fb359e9a05394cc7074e0feb42573a2601abc0c869a953e8c5c12e4e01f1a8c"},
}
oldNow := now
defer func() { now = oldNow }()
now = setTime(defaultTime)
testRequestSigner(t, defaultRequestSigner, input, output)
}
func TestAWSv4Signature_PostRequest(t *testing.T) {
input, _ := http.NewRequest("POST", "https://host.foo.com/", nil)
setDefaultTime(input)
input.Header.Add("ZOO", "zoobar")
output, _ := http.NewRequest("POST", "https://host.foo.com/", nil)
output.Header = http.Header{
"Host": []string{"host.foo.com"},
"Date": []string{"Mon, 09 Sep 2011 23:36:00 GMT"},
"Authorization": []string{"AWS4-HMAC-SHA256 Credential=AKIDEXAMPLE/20110909/us-east-1/host/aws4_request, SignedHeaders=date;host;zoo, Signature=b7a95a52518abbca0964a999a880429ab734f35ebbf1235bd79a5de87756dc4a"},
"Zoo": []string{"zoobar"},
}
oldNow := now
defer func() { now = oldNow }()
now = setTime(defaultTime)
testRequestSigner(t, defaultRequestSigner, input, output)
}
func TestAWSv4Signature_PostRequestWithCapitalizedHeaderValue(t *testing.T) {
input, _ := http.NewRequest("POST", "https://host.foo.com/", nil)
setDefaultTime(input)
input.Header.Add("zoo", "ZOOBAR")
output, _ := http.NewRequest("POST", "https://host.foo.com/", nil)
output.Header = http.Header{
"Host": []string{"host.foo.com"},
"Date": []string{"Mon, 09 Sep 2011 23:36:00 GMT"},
"Authorization": []string{"AWS4-HMAC-SHA256 Credential=AKIDEXAMPLE/20110909/us-east-1/host/aws4_request, SignedHeaders=date;host;zoo, Signature=273313af9d0c265c531e11db70bbd653f3ba074c1009239e8559d3987039cad7"},
"Zoo": []string{"ZOOBAR"},
}
oldNow := now
defer func() { now = oldNow }()
now = setTime(defaultTime)
testRequestSigner(t, defaultRequestSigner, input, output)
}
func TestAWSv4Signature_PostRequestPhfft(t *testing.T) {
input, _ := http.NewRequest("POST", "https://host.foo.com/", nil)
setDefaultTime(input)
input.Header.Add("p", "phfft")
output, _ := http.NewRequest("POST", "https://host.foo.com/", nil)
output.Header = http.Header{
"Host": []string{"host.foo.com"},
"Date": []string{"Mon, 09 Sep 2011 23:36:00 GMT"},
"Authorization": []string{"AWS4-HMAC-SHA256 Credential=AKIDEXAMPLE/20110909/us-east-1/host/aws4_request, SignedHeaders=date;host;p, Signature=debf546796015d6f6ded8626f5ce98597c33b47b9164cf6b17b4642036fcb592"},
"P": []string{"phfft"},
}
oldNow := now
defer func() { now = oldNow }()
now = setTime(defaultTime)
testRequestSigner(t, defaultRequestSigner, input, output)
}
func TestAWSv4Signature_PostRequestWithBody(t *testing.T) {
input, _ := http.NewRequest("POST", "https://host.foo.com/", strings.NewReader("foo=bar"))
setDefaultTime(input)
input.Header.Add("Content-Type", "application/x-www-form-urlencoded")
output, _ := http.NewRequest("POST", "https://host.foo.com/", nil)
output.Header = http.Header{
"Host": []string{"host.foo.com"},
"Date": []string{"Mon, 09 Sep 2011 23:36:00 GMT"},
"Content-Type": []string{"application/x-www-form-urlencoded"},
"Authorization": []string{"AWS4-HMAC-SHA256 Credential=AKIDEXAMPLE/20110909/us-east-1/host/aws4_request, SignedHeaders=content-type;date;host, Signature=5a15b22cf462f047318703b92e6f4f38884e4a7ab7b1d6426ca46a8bd1c26cbc"},
}
oldNow := now
defer func() { now = oldNow }()
now = setTime(defaultTime)
testRequestSigner(t, defaultRequestSigner, input, output)
}
func TestAWSv4Signature_PostRequestWithQueryString(t *testing.T) {
input, _ := http.NewRequest("POST", "https://host.foo.com/?foo=bar", nil)
setDefaultTime(input)
output, _ := http.NewRequest("POST", "https://host.foo.com/?foo=bar", nil)
output.Header = http.Header{
"Host": []string{"host.foo.com"},
"Date": []string{"Mon, 09 Sep 2011 23:36:00 GMT"},
"Authorization": []string{"AWS4-HMAC-SHA256 Credential=AKIDEXAMPLE/20110909/us-east-1/host/aws4_request, SignedHeaders=date;host, Signature=b6e3b79003ce0743a491606ba1035a804593b0efb1e20a11cba83f8c25a57a92"},
}
oldNow := now
defer func() { now = oldNow }()
now = setTime(defaultTime)
testRequestSigner(t, defaultRequestSigner, input, output)
}
func TestAWSv4Signature_GetRequestWithSecurityToken(t *testing.T) {
input, _ := http.NewRequest("GET", "https://ec2.us-east-2.amazonaws.com?Action=DescribeRegions&Version=2013-10-15", nil)
output, _ := http.NewRequest("GET", "https://ec2.us-east-2.amazonaws.com?Action=DescribeRegions&Version=2013-10-15", nil)
output.Header = http.Header{
"Host": []string{"ec2.us-east-2.amazonaws.com"},
"Authorization": []string{"AWS4-HMAC-SHA256 Credential=" + accessKeyID + "/20200811/us-east-2/ec2/aws4_request, SignedHeaders=host;x-amz-date;x-amz-security-token, Signature=631ea80cddfaa545fdadb120dc92c9f18166e38a5c47b50fab9fce476e022855"},
"X-Amz-Date": []string{"20200811T065522Z"},
"X-Amz-Security-Token": []string{securityToken},
}
oldNow := now
defer func() { now = oldNow }()
now = setTime(secondDefaultTime)
testRequestSigner(t, requestSignerWithToken, input, output)
}
func TestAWSv4Signature_PostRequestWithSecurityToken(t *testing.T) {
input, _ := http.NewRequest("POST", "https://sts.us-east-2.amazonaws.com?Action=GetCallerIdentity&Version=2011-06-15", nil)
output, _ := http.NewRequest("POST", "https://sts.us-east-2.amazonaws.com?Action=GetCallerIdentity&Version=2011-06-15", nil)
output.Header = http.Header{
"Authorization": []string{"AWS4-HMAC-SHA256 Credential=" + accessKeyID + "/20200811/us-east-2/sts/aws4_request, SignedHeaders=host;x-amz-date;x-amz-security-token, Signature=73452984e4a880ffdc5c392355733ec3f5ba310d5e0609a89244440cadfe7a7a"},
"Host": []string{"sts.us-east-2.amazonaws.com"},
"X-Amz-Date": []string{"20200811T065522Z"},
"X-Amz-Security-Token": []string{securityToken},
}
oldNow := now
defer func() { now = oldNow }()
now = setTime(secondDefaultTime)
testRequestSigner(t, requestSignerWithToken, input, output)
}
func TestAWSv4Signature_PostRequestWithSecurityTokenAndAdditionalHeaders(t *testing.T) {
requestParams := "{\"KeySchema\":[{\"KeyType\":\"HASH\",\"AttributeName\":\"Id\"}],\"TableName\":\"TestTable\",\"AttributeDefinitions\":[{\"AttributeName\":\"Id\",\"AttributeType\":\"S\"}],\"ProvisionedThroughput\":{\"WriteCapacityUnits\":5,\"ReadCapacityUnits\":5}}"
input, _ := http.NewRequest("POST", "https://dynamodb.us-east-2.amazonaws.com/", strings.NewReader(requestParams))
input.Header.Add("Content-Type", "application/x-amz-json-1.0")
input.Header.Add("x-amz-target", "DynamoDB_20120810.CreateTable")
output, _ := http.NewRequest("POST", "https://dynamodb.us-east-2.amazonaws.com/", strings.NewReader(requestParams))
output.Header = http.Header{
"Authorization": []string{"AWS4-HMAC-SHA256 Credential=" + accessKeyID + "/20200811/us-east-2/dynamodb/aws4_request, SignedHeaders=content-type;host;x-amz-date;x-amz-security-token;x-amz-target, Signature=fdaa5b9cc9c86b80fe61eaf504141c0b3523780349120f2bd8145448456e0385"},
"Host": []string{"dynamodb.us-east-2.amazonaws.com"},
"X-Amz-Date": []string{"20200811T065522Z"},
"Content-Type": []string{"application/x-amz-json-1.0"},
"X-Amz-Target": []string{"DynamoDB_20120810.CreateTable"},
"X-Amz-Security-Token": []string{securityToken},
}
oldNow := now
defer func() { now = oldNow }()
now = setTime(secondDefaultTime)
testRequestSigner(t, requestSignerWithToken, input, output)
}
func TestAWSv4Signature_PostRequestWithAmzDateButNoSecurityToken(t *testing.T) {
var requestSigner = &awsRequestSigner{
RegionName: "us-east-2",
AwsSecurityCredentials: awsSecurityCredentials{
AccessKeyID: accessKeyID,
SecretAccessKey: secretAccessKey,
},
}
input, _ := http.NewRequest("POST", "https://sts.us-east-2.amazonaws.com?Action=GetCallerIdentity&Version=2011-06-15", nil)
output, _ := http.NewRequest("POST", "https://sts.us-east-2.amazonaws.com?Action=GetCallerIdentity&Version=2011-06-15", nil)
output.Header = http.Header{
"Authorization": []string{"AWS4-HMAC-SHA256 Credential=" + accessKeyID + "/20200811/us-east-2/sts/aws4_request, SignedHeaders=host;x-amz-date, Signature=d095ba304919cd0d5570ba8a3787884ee78b860f268ed040ba23831d55536d56"},
"Host": []string{"sts.us-east-2.amazonaws.com"},
"X-Amz-Date": []string{"20200811T065522Z"},
}
oldNow := now
defer func() { now = oldNow }()
now = setTime(secondDefaultTime)
testRequestSigner(t, requestSigner, input, output)
}
type testAwsServer struct {
url string
securityCredentialURL string
regionURL string
regionalCredVerificationURL string
imdsv2SessionTokenUrl string
Credentials map[string]string
WriteRolename func(http.ResponseWriter, *http.Request)
WriteSecurityCredentials func(http.ResponseWriter, *http.Request)
WriteRegion func(http.ResponseWriter, *http.Request)
WriteIMDSv2SessionToken func(http.ResponseWriter, *http.Request)
}
func createAwsTestServer(url, regionURL, regionalCredVerificationURL, imdsv2SessionTokenUrl string, rolename, region string, credentials map[string]string, imdsv2SessionToken string, validateHeaders validateHeaders) *testAwsServer {
server := &testAwsServer{
url: url,
securityCredentialURL: fmt.Sprintf("%s/%s", url, rolename),
regionURL: regionURL,
regionalCredVerificationURL: regionalCredVerificationURL,
imdsv2SessionTokenUrl: imdsv2SessionTokenUrl,
Credentials: credentials,
WriteRolename: func(w http.ResponseWriter, r *http.Request) {
validateHeaders(r)
w.Write([]byte(rolename))
},
WriteRegion: func(w http.ResponseWriter, r *http.Request) {
validateHeaders(r)
w.Write([]byte(region))
},
WriteIMDSv2SessionToken: func(w http.ResponseWriter, r *http.Request) {
validateHeaders(r)
w.Write([]byte(imdsv2SessionToken))
},
}
server.WriteSecurityCredentials = func(w http.ResponseWriter, r *http.Request) {
validateHeaders(r)
jsonCredentials, _ := json.Marshal(server.Credentials)
w.Write(jsonCredentials)
}
return server
}
func createDefaultAwsTestServer() *testAwsServer {
return createAwsTestServer(
"/latest/meta-data/iam/security-credentials",
"/latest/meta-data/placement/availability-zone",
"https://sts.{region}.amazonaws.com?Action=GetCallerIdentity&Version=2011-06-15",
"",
"gcp-aws-role",
"us-east-2b",
map[string]string{
"SecretAccessKey": secretAccessKey,
"AccessKeyId": accessKeyID,
"Token": securityToken,
},
"",
noHeaderValidation,
)
}
func (server *testAwsServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
switch p := r.URL.Path; p {
case server.url:
server.WriteRolename(w, r)
case server.securityCredentialURL:
server.WriteSecurityCredentials(w, r)
case server.regionURL:
server.WriteRegion(w, r)
case server.imdsv2SessionTokenUrl:
server.WriteIMDSv2SessionToken(w, r)
}
}
func notFound(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(404)
w.Write([]byte("Not Found"))
}
func noHeaderValidation(r *http.Request) {}
func (server *testAwsServer) getCredentialSource(url string) CredentialSource {
return CredentialSource{
EnvironmentID: "aws1",
URL: url + server.url,
RegionURL: url + server.regionURL,
RegionalCredVerificationURL: server.regionalCredVerificationURL,
IMDSv2SessionTokenURL: url + server.imdsv2SessionTokenUrl,
}
}
func getExpectedSubjectToken(url, region, accessKeyID, secretAccessKey, securityToken string) string {
req, _ := http.NewRequest("POST", url, nil)
req.Header.Add("x-goog-cloud-target-resource", testFileConfig.Audience)
signer := &awsRequestSigner{
RegionName: region,
AwsSecurityCredentials: awsSecurityCredentials{
AccessKeyID: accessKeyID,
SecretAccessKey: secretAccessKey,
SecurityToken: securityToken,
},
}
signer.SignRequest(req)
result := awsRequest{
URL: url,
Method: "POST",
Headers: []awsRequestHeader{
{
Key: "Authorization",
Value: req.Header.Get("Authorization"),
}, {
Key: "Host",
Value: req.Header.Get("Host"),
}, {
Key: "X-Amz-Date",
Value: req.Header.Get("X-Amz-Date"),
},
},
}
if securityToken != "" {
result.Headers = append(result.Headers, awsRequestHeader{
Key: "X-Amz-Security-Token",
Value: securityToken,
})
}
result.Headers = append(result.Headers, awsRequestHeader{
Key: "X-Goog-Cloud-Target-Resource",
Value: testFileConfig.Audience,
})
str, _ := json.Marshal(result)
return neturl.QueryEscape(string(str))
}
func TestAWSCredential_BasicRequest(t *testing.T) {
server := createDefaultAwsTestServer()
ts := httptest.NewServer(server)
tsURL, err := neturl.Parse(ts.URL)
if err != nil {
t.Fatalf("couldn't parse httptest servername")
}
tfc := testFileConfig
tfc.CredentialSource = server.getCredentialSource(ts.URL)
oldGetenv := getenv
oldNow := now
oldValidHostnames := validHostnames
defer func() {
getenv = oldGetenv
now = oldNow
validHostnames = oldValidHostnames
}()
getenv = setEnvironment(map[string]string{})
now = setTime(defaultTime)
validHostnames = []string{tsURL.Hostname()}
base, err := tfc.parse(context.Background())
if err != nil {
t.Fatalf("parse() failed %v", err)
}
out, err := base.subjectToken()
if err != nil {
t.Fatalf("retrieveSubjectToken() failed: %v", err)
}
expected := getExpectedSubjectToken(
"https://sts.us-east-2.amazonaws.com?Action=GetCallerIdentity&Version=2011-06-15",
"us-east-2",
accessKeyID,
secretAccessKey,
securityToken,
)
if got, want := out, expected; !reflect.DeepEqual(got, want) {
t.Errorf("subjectToken = \n%q\n want \n%q", got, want)
}
}
func TestAWSCredential_IMDSv2(t *testing.T) {
validateSessionTokenHeaders := func(r *http.Request) {
if r.URL.Path == "/latest/api/token" {
headerValue := r.Header.Get(awsIMDSv2SessionTtlHeader)
if headerValue != awsIMDSv2SessionTtl {
t.Errorf("%q = \n%q\n want \n%q", awsIMDSv2SessionTtlHeader, headerValue, awsIMDSv2SessionTtl)
}
} else {
headerValue := r.Header.Get(awsIMDSv2SessionTokenHeader)
if headerValue != "sessiontoken" {
t.Errorf("%q = \n%q\n want \n%q", awsIMDSv2SessionTokenHeader, headerValue, "sessiontoken")
}
}
}
server := createAwsTestServer(
"/latest/meta-data/iam/security-credentials",
"/latest/meta-data/placement/availability-zone",
"https://sts.{region}.amazonaws.com?Action=GetCallerIdentity&Version=2011-06-15",
"/latest/api/token",
"gcp-aws-role",
"us-east-2b",
map[string]string{
"SecretAccessKey": secretAccessKey,
"AccessKeyId": accessKeyID,
"Token": securityToken,
},
"sessiontoken",
validateSessionTokenHeaders,
)
ts := httptest.NewServer(server)
tsURL, err := neturl.Parse(ts.URL)
if err != nil {
t.Fatalf("couldn't parse httptest servername")
}
tfc := testFileConfig
tfc.CredentialSource = server.getCredentialSource(ts.URL)
oldGetenv := getenv
oldNow := now
oldValidHostnames := validHostnames
defer func() {
getenv = oldGetenv
now = oldNow
validHostnames = oldValidHostnames
}()
getenv = setEnvironment(map[string]string{})
now = setTime(defaultTime)
validHostnames = []string{tsURL.Hostname()}
base, err := tfc.parse(context.Background())
if err != nil {
t.Fatalf("parse() failed %v", err)
}
out, err := base.subjectToken()
if err != nil {
t.Fatalf("retrieveSubjectToken() failed: %v", err)
}
expected := getExpectedSubjectToken(
"https://sts.us-east-2.amazonaws.com?Action=GetCallerIdentity&Version=2011-06-15",
"us-east-2",
accessKeyID,
secretAccessKey,
securityToken,
)
if got, want := out, expected; !reflect.DeepEqual(got, want) {
t.Errorf("subjectToken = \n%q\n want \n%q", got, want)
}
}
func TestAWSCredential_BasicRequestWithoutSecurityToken(t *testing.T) {
server := createDefaultAwsTestServer()
ts := httptest.NewServer(server)
tsURL, err := neturl.Parse(ts.URL)
if err != nil {
t.Fatalf("couldn't parse httptest servername")
}
delete(server.Credentials, "Token")
tfc := testFileConfig
tfc.CredentialSource = server.getCredentialSource(ts.URL)
oldGetenv := getenv
oldNow := now
oldValidHostnames := validHostnames
defer func() {
getenv = oldGetenv
now = oldNow
validHostnames = oldValidHostnames
}()
getenv = setEnvironment(map[string]string{})
now = setTime(defaultTime)
validHostnames = []string{tsURL.Hostname()}
base, err := tfc.parse(context.Background())
if err != nil {
t.Fatalf("parse() failed %v", err)
}
out, err := base.subjectToken()
if err != nil {
t.Fatalf("retrieveSubjectToken() failed: %v", err)
}
expected := getExpectedSubjectToken(
"https://sts.us-east-2.amazonaws.com?Action=GetCallerIdentity&Version=2011-06-15",
"us-east-2",
accessKeyID,
secretAccessKey,
"",
)
if got, want := out, expected; !reflect.DeepEqual(got, want) {
t.Errorf("subjectToken = \n%q\n want \n%q", got, want)
}
}
func TestAWSCredential_BasicRequestWithEnv(t *testing.T) {
server := createDefaultAwsTestServer()
ts := httptest.NewServer(server)
tsURL, err := neturl.Parse(ts.URL)
if err != nil {
t.Fatalf("couldn't parse httptest servername")
}
tfc := testFileConfig
tfc.CredentialSource = server.getCredentialSource(ts.URL)
oldGetenv := getenv
oldNow := now
oldValidHostnames := validHostnames
defer func() {
getenv = oldGetenv
now = oldNow
validHostnames = oldValidHostnames
}()
getenv = setEnvironment(map[string]string{
"AWS_ACCESS_KEY_ID": "AKIDEXAMPLE",
"AWS_SECRET_ACCESS_KEY": "wJalrXUtnFEMI/K7MDENG+bPxRfiCYEXAMPLEKEY",
"AWS_REGION": "us-west-1",
})
now = setTime(defaultTime)
validHostnames = []string{tsURL.Hostname()}
base, err := tfc.parse(context.Background())
if err != nil {
t.Fatalf("parse() failed %v", err)
}
out, err := base.subjectToken()
if err != nil {
t.Fatalf("retrieveSubjectToken() failed: %v", err)
}
expected := getExpectedSubjectToken(
"https://sts.us-west-1.amazonaws.com?Action=GetCallerIdentity&Version=2011-06-15",
"us-west-1",
"AKIDEXAMPLE",
"wJalrXUtnFEMI/K7MDENG+bPxRfiCYEXAMPLEKEY",
"",
)
if got, want := out, expected; !reflect.DeepEqual(got, want) {
t.Errorf("subjectToken = \n%q\n want \n%q", got, want)
}
}
func TestAWSCredential_BasicRequestWithDefaultEnv(t *testing.T) {
server := createDefaultAwsTestServer()
ts := httptest.NewServer(server)
tsURL, err := neturl.Parse(ts.URL)
if err != nil {
t.Fatalf("couldn't parse httptest servername")
}
tfc := testFileConfig
tfc.CredentialSource = server.getCredentialSource(ts.URL)
oldGetenv := getenv
oldNow := now
oldValidHostnames := validHostnames
defer func() {
getenv = oldGetenv
now = oldNow
validHostnames = oldValidHostnames
}()
getenv = setEnvironment(map[string]string{
"AWS_ACCESS_KEY_ID": "AKIDEXAMPLE",
"AWS_SECRET_ACCESS_KEY": "wJalrXUtnFEMI/K7MDENG+bPxRfiCYEXAMPLEKEY",
"AWS_REGION": "us-west-1",
})
now = setTime(defaultTime)
validHostnames = []string{tsURL.Hostname()}
base, err := tfc.parse(context.Background())
if err != nil {
t.Fatalf("parse() failed %v", err)
}
out, err := base.subjectToken()
if err != nil {
t.Fatalf("retrieveSubjectToken() failed: %v", err)
}
expected := getExpectedSubjectToken(
"https://sts.us-west-1.amazonaws.com?Action=GetCallerIdentity&Version=2011-06-15",
"us-west-1",
"AKIDEXAMPLE",
"wJalrXUtnFEMI/K7MDENG+bPxRfiCYEXAMPLEKEY",
"",
)
if got, want := out, expected; !reflect.DeepEqual(got, want) {
t.Errorf("subjectToken = \n%q\n want \n%q", got, want)
}
}
func TestAWSCredential_BasicRequestWithTwoRegions(t *testing.T) {
server := createDefaultAwsTestServer()
ts := httptest.NewServer(server)
tsURL, err := neturl.Parse(ts.URL)
if err != nil {
t.Fatalf("couldn't parse httptest servername")
}
tfc := testFileConfig
tfc.CredentialSource = server.getCredentialSource(ts.URL)
oldGetenv := getenv
oldNow := now
oldValidHostnames := validHostnames
defer func() {
getenv = oldGetenv
now = oldNow
validHostnames = oldValidHostnames
}()
getenv = setEnvironment(map[string]string{
"AWS_ACCESS_KEY_ID": "AKIDEXAMPLE",
"AWS_SECRET_ACCESS_KEY": "wJalrXUtnFEMI/K7MDENG+bPxRfiCYEXAMPLEKEY",
"AWS_REGION": "us-west-1",
"AWS_DEFAULT_REGION": "us-east-1",
})
now = setTime(defaultTime)
validHostnames = []string{tsURL.Hostname()}
base, err := tfc.parse(context.Background())
if err != nil {
t.Fatalf("parse() failed %v", err)
}
out, err := base.subjectToken()
if err != nil {
t.Fatalf("retrieveSubjectToken() failed: %v", err)
}
expected := getExpectedSubjectToken(
"https://sts.us-west-1.amazonaws.com?Action=GetCallerIdentity&Version=2011-06-15",
"us-west-1",
"AKIDEXAMPLE",
"wJalrXUtnFEMI/K7MDENG+bPxRfiCYEXAMPLEKEY",
"",
)
if got, want := out, expected; !reflect.DeepEqual(got, want) {
t.Errorf("subjectToken = \n%q\n want \n%q", got, want)
}
}
func TestAWSCredential_RequestWithBadVersion(t *testing.T) {
server := createDefaultAwsTestServer()
ts := httptest.NewServer(server)
tsURL, err := neturl.Parse(ts.URL)
if err != nil {
t.Fatalf("couldn't parse httptest servername")
}
tfc := testFileConfig
tfc.CredentialSource = server.getCredentialSource(ts.URL)
tfc.CredentialSource.EnvironmentID = "aws3"
oldGetenv := getenv
oldValidHostnames := validHostnames
defer func() {
getenv = oldGetenv
validHostnames = oldValidHostnames
}()
getenv = setEnvironment(map[string]string{})
validHostnames = []string{tsURL.Hostname()}
_, err = tfc.parse(context.Background())
if err == nil {
t.Fatalf("parse() should have failed")
}
if got, want := err.Error(), "oauth2/google: aws version '3' is not supported in the current build"; !reflect.DeepEqual(got, want) {
t.Errorf("subjectToken = %q, want %q", got, want)
}
}
func TestAWSCredential_RequestWithNoRegionURL(t *testing.T) {
server := createDefaultAwsTestServer()
ts := httptest.NewServer(server)
tsURL, err := neturl.Parse(ts.URL)
if err != nil {
t.Fatalf("couldn't parse httptest servername")
}
tfc := testFileConfig
tfc.CredentialSource = server.getCredentialSource(ts.URL)
tfc.CredentialSource.RegionURL = ""
oldGetenv := getenv
oldValidHostnames := validHostnames
defer func() {
getenv = oldGetenv
validHostnames = oldValidHostnames
}()
getenv = setEnvironment(map[string]string{})
validHostnames = []string{tsURL.Hostname()}
base, err := tfc.parse(context.Background())
if err != nil {
t.Fatalf("parse() failed %v", err)
}
_, err = base.subjectToken()
if err == nil {
t.Fatalf("retrieveSubjectToken() should have failed")
}
if got, want := err.Error(), "oauth2/google: unable to determine AWS region"; !reflect.DeepEqual(got, want) {
t.Errorf("subjectToken = %q, want %q", got, want)
}
}
func TestAWSCredential_RequestWithBadRegionURL(t *testing.T) {
server := createDefaultAwsTestServer()
ts := httptest.NewServer(server)
tsURL, err := neturl.Parse(ts.URL)
if err != nil {
t.Fatalf("couldn't parse httptest servername")
}
server.WriteRegion = notFound
tfc := testFileConfig
tfc.CredentialSource = server.getCredentialSource(ts.URL)
oldGetenv := getenv
oldValidHostnames := validHostnames
defer func() {
getenv = oldGetenv
validHostnames = oldValidHostnames
}()
getenv = setEnvironment(map[string]string{})
validHostnames = []string{tsURL.Hostname()}
base, err := tfc.parse(context.Background())
if err != nil {
t.Fatalf("parse() failed %v", err)
}
_, err = base.subjectToken()
if err == nil {
t.Fatalf("retrieveSubjectToken() should have failed")
}
if got, want := err.Error(), "oauth2/google: unable to retrieve AWS region - Not Found"; !reflect.DeepEqual(got, want) {
t.Errorf("subjectToken = %q, want %q", got, want)
}
}
func TestAWSCredential_RequestWithMissingCredential(t *testing.T) {
server := createDefaultAwsTestServer()
ts := httptest.NewServer(server)
tsURL, err := neturl.Parse(ts.URL)
if err != nil {
t.Fatalf("couldn't parse httptest servername")
}
server.WriteSecurityCredentials = func(w http.ResponseWriter, r *http.Request) {
w.Write([]byte("{}"))
}
tfc := testFileConfig
tfc.CredentialSource = server.getCredentialSource(ts.URL)
oldGetenv := getenv
oldValidHostnames := validHostnames
defer func() {
getenv = oldGetenv
validHostnames = oldValidHostnames
}()
getenv = setEnvironment(map[string]string{})
validHostnames = []string{tsURL.Hostname()}
base, err := tfc.parse(context.Background())
if err != nil {
t.Fatalf("parse() failed %v", err)
}
_, err = base.subjectToken()
if err == nil {
t.Fatalf("retrieveSubjectToken() should have failed")
}
if got, want := err.Error(), "oauth2/google: missing AccessKeyId credential"; !reflect.DeepEqual(got, want) {
t.Errorf("subjectToken = %q, want %q", got, want)
}
}
func TestAWSCredential_RequestWithIncompleteCredential(t *testing.T) {
server := createDefaultAwsTestServer()
ts := httptest.NewServer(server)
tsURL, err := neturl.Parse(ts.URL)
if err != nil {
t.Fatalf("couldn't parse httptest servername")
}
server.WriteSecurityCredentials = func(w http.ResponseWriter, r *http.Request) {
w.Write([]byte(`{"AccessKeyId":"FOOBARBAS"}`))
}
tfc := testFileConfig
tfc.CredentialSource = server.getCredentialSource(ts.URL)
oldGetenv := getenv
oldValidHostnames := validHostnames
defer func() {
getenv = oldGetenv
validHostnames = oldValidHostnames
}()
getenv = setEnvironment(map[string]string{})
validHostnames = []string{tsURL.Hostname()}
base, err := tfc.parse(context.Background())
if err != nil {
t.Fatalf("parse() failed %v", err)
}
_, err = base.subjectToken()
if err == nil {
t.Fatalf("retrieveSubjectToken() should have failed")
}
if got, want := err.Error(), "oauth2/google: missing SecretAccessKey credential"; !reflect.DeepEqual(got, want) {
t.Errorf("subjectToken = %q, want %q", got, want)
}
}
func TestAWSCredential_RequestWithNoCredentialURL(t *testing.T) {
server := createDefaultAwsTestServer()
ts := httptest.NewServer(server)
tsURL, err := neturl.Parse(ts.URL)
if err != nil {
t.Fatalf("couldn't parse httptest servername")
}
tfc := testFileConfig
tfc.CredentialSource = server.getCredentialSource(ts.URL)
tfc.CredentialSource.URL = ""
oldGetenv := getenv
oldValidHostnames := validHostnames
defer func() {
getenv = oldGetenv
validHostnames = oldValidHostnames
}()
getenv = setEnvironment(map[string]string{})
validHostnames = []string{tsURL.Hostname()}
base, err := tfc.parse(context.Background())
if err != nil {
t.Fatalf("parse() failed %v", err)
}
_, err = base.subjectToken()
if err == nil {
t.Fatalf("retrieveSubjectToken() should have failed")
}
if got, want := err.Error(), "oauth2/google: unable to determine the AWS metadata server security credentials endpoint"; !reflect.DeepEqual(got, want) {
t.Errorf("subjectToken = %q, want %q", got, want)
}
}
func TestAWSCredential_RequestWithBadCredentialURL(t *testing.T) {
server := createDefaultAwsTestServer()
ts := httptest.NewServer(server)
tsURL, err := neturl.Parse(ts.URL)
if err != nil {
t.Fatalf("couldn't parse httptest servername")
}
server.WriteRolename = notFound
tfc := testFileConfig
tfc.CredentialSource = server.getCredentialSource(ts.URL)
oldGetenv := getenv
oldValidHostnames := validHostnames
defer func() {
getenv = oldGetenv
validHostnames = oldValidHostnames
}()
getenv = setEnvironment(map[string]string{})
validHostnames = []string{tsURL.Hostname()}
base, err := tfc.parse(context.Background())
if err != nil {
t.Fatalf("parse() failed %v", err)
}
_, err = base.subjectToken()
if err == nil {
t.Fatalf("retrieveSubjectToken() should have failed")
}
if got, want := err.Error(), "oauth2/google: unable to retrieve AWS role name - Not Found"; !reflect.DeepEqual(got, want) {
t.Errorf("subjectToken = %q, want %q", got, want)
}
}
func TestAWSCredential_RequestWithBadFinalCredentialURL(t *testing.T) {
server := createDefaultAwsTestServer()
ts := httptest.NewServer(server)
tsURL, err := neturl.Parse(ts.URL)
if err != nil {
t.Fatalf("couldn't parse httptest servername")
}
server.WriteSecurityCredentials = notFound
tfc := testFileConfig
tfc.CredentialSource = server.getCredentialSource(ts.URL)
oldGetenv := getenv
oldValidHostnames := validHostnames
defer func() {
getenv = oldGetenv
validHostnames = oldValidHostnames
}()
getenv = setEnvironment(map[string]string{})
validHostnames = []string{tsURL.Hostname()}
base, err := tfc.parse(context.Background())
if err != nil {
t.Fatalf("parse() failed %v", err)
}
_, err = base.subjectToken()
if err == nil {
t.Fatalf("retrieveSubjectToken() should have failed")
}
if got, want := err.Error(), "oauth2/google: unable to retrieve AWS security credentials - Not Found"; !reflect.DeepEqual(got, want) {
t.Errorf("subjectToken = %q, want %q", got, want)
}
}
func TestAWSCredential_Validations(t *testing.T) {
var metadataServerValidityTests = []struct {
name string
credSource CredentialSource
errText string
}{
{
name: "No Metadata Server URLs",
credSource: CredentialSource{
EnvironmentID: "aws1",
RegionURL: "",
URL: "",
IMDSv2SessionTokenURL: "",
},
}, {
name: "IPv4 Metadata Server URLs",
credSource: CredentialSource{
EnvironmentID: "aws1",
RegionURL: "http://169.254.169.254/latest/meta-data/placement/availability-zone",
URL: "http://169.254.169.254/latest/meta-data/iam/security-credentials",
IMDSv2SessionTokenURL: "http://169.254.169.254/latest/api/token",
},
}, {
name: "IPv6 Metadata Server URLs",
credSource: CredentialSource{
EnvironmentID: "aws1",
RegionURL: "http://[fd00:ec2::254]/latest/meta-data/placement/availability-zone",
URL: "http://[fd00:ec2::254]/latest/meta-data/iam/security-credentials",
IMDSv2SessionTokenURL: "http://[fd00:ec2::254]/latest/api/token",
},
}, {
name: "Faulty RegionURL",
credSource: CredentialSource{
EnvironmentID: "aws1",
RegionURL: "http://abc.com/latest/meta-data/placement/availability-zone",
URL: "http://169.254.169.254/latest/meta-data/iam/security-credentials",
IMDSv2SessionTokenURL: "http://169.254.169.254/latest/api/token",
},
errText: "oauth2/google: invalid hostname http://abc.com/latest/meta-data/placement/availability-zone for region_url",
}, {
name: "Faulty CredVerificationURL",
credSource: CredentialSource{
EnvironmentID: "aws1",
RegionURL: "http://169.254.169.254/latest/meta-data/placement/availability-zone",
URL: "http://abc.com/latest/meta-data/iam/security-credentials",
IMDSv2SessionTokenURL: "http://169.254.169.254/latest/api/token",
},
errText: "oauth2/google: invalid hostname http://abc.com/latest/meta-data/iam/security-credentials for url",
}, {
name: "Faulty IMDSv2SessionTokenURL",
credSource: CredentialSource{
EnvironmentID: "aws1",
RegionURL: "http://169.254.169.254/latest/meta-data/placement/availability-zone",
URL: "http://169.254.169.254/latest/meta-data/iam/security-credentials",
IMDSv2SessionTokenURL: "http://abc.com/latest/api/token",
},
errText: "oauth2/google: invalid hostname http://abc.com/latest/api/token for imdsv2_session_token_url",
},
}
for _, tt := range metadataServerValidityTests {
t.Run(tt.name, func(t *testing.T) {
tfc := testFileConfig
tfc.CredentialSource = tt.credSource
oldGetenv := getenv
defer func() { getenv = oldGetenv }()
getenv = setEnvironment(map[string]string{})
_, err := tfc.parse(context.Background())
if err != nil {
if tt.errText == "" {
t.Errorf("Didn't expect an error, but got %v", err)
} else if tt.errText != err.Error() {
t.Errorf("Expected %v, but got %v", tt.errText, err)
}
} else {
if tt.errText != "" {
t.Errorf("Expected error %v, but got none", tt.errText)
}
}
})
}
}