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minio/cmd/post-policy_test.go

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/*
* Minio Cloud Storage, (C) 2016 Minio, 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 cmd
import (
"bytes"
"encoding/base64"
"fmt"
"io/ioutil"
"mime/multipart"
"net/http"
"net/http/httptest"
"testing"
"time"
humanize "github.com/dustin/go-humanize"
)
const (
expirationDateFormat = "2006-01-02T15:04:05.999Z"
iso8601DateFormat = "20060102T150405Z"
)
func newPostPolicyBytesV4WithContentRange(credential, bucketName, objectKey string, expiration time.Time) []byte {
t := time.Now().UTC()
// Add the expiration date.
expirationStr := fmt.Sprintf(`"expiration": "%s"`, expiration.Format(expirationDateFormat))
// Add the bucket condition, only accept buckets equal to the one passed.
bucketConditionStr := fmt.Sprintf(`["eq", "$bucket", "%s"]`, bucketName)
// Add the key condition, only accept keys equal to the one passed.
keyConditionStr := fmt.Sprintf(`["eq", "$key", "%s"]`, objectKey)
// Add content length condition, only accept content sizes of a given length.
contentLengthCondStr := `["content-length-range", 1024, 1048576]`
// Add the algorithm condition, only accept AWS SignV4 Sha256.
algorithmConditionStr := `["eq", "$x-amz-algorithm", "AWS4-HMAC-SHA256"]`
// Add the date condition, only accept the current date.
dateConditionStr := fmt.Sprintf(`["eq", "$x-amz-date", "%s"]`, t.Format(iso8601DateFormat))
// Add the credential string, only accept the credential passed.
credentialConditionStr := fmt.Sprintf(`["eq", "$x-amz-credential", "%s"]`, credential)
// Combine all conditions into one string.
conditionStr := fmt.Sprintf(`"conditions":[%s, %s, %s, %s, %s, %s]`, bucketConditionStr,
keyConditionStr, contentLengthCondStr, algorithmConditionStr, dateConditionStr, credentialConditionStr)
retStr := "{"
retStr = retStr + expirationStr + ","
retStr = retStr + conditionStr
retStr = retStr + "}"
return []byte(retStr)
}
// newPostPolicyBytesV4 - creates a bare bones postpolicy string with key and bucket matches.
func newPostPolicyBytesV4(credential, bucketName, objectKey string, expiration time.Time) []byte {
t := time.Now().UTC()
// Add the expiration date.
expirationStr := fmt.Sprintf(`"expiration": "%s"`, expiration.Format(expirationDateFormat))
// Add the bucket condition, only accept buckets equal to the one passed.
bucketConditionStr := fmt.Sprintf(`["eq", "$bucket", "%s"]`, bucketName)
// Add the key condition, only accept keys equal to the one passed.
keyConditionStr := fmt.Sprintf(`["eq", "$key", "%s"]`, objectKey)
// Add the algorithm condition, only accept AWS SignV4 Sha256.
algorithmConditionStr := `["eq", "$x-amz-algorithm", "AWS4-HMAC-SHA256"]`
// Add the date condition, only accept the current date.
dateConditionStr := fmt.Sprintf(`["eq", "$x-amz-date", "%s"]`, t.Format(iso8601DateFormat))
// Add the credential string, only accept the credential passed.
credentialConditionStr := fmt.Sprintf(`["eq", "$x-amz-credential", "%s"]`, credential)
// Combine all conditions into one string.
conditionStr := fmt.Sprintf(`"conditions":[%s, %s, %s, %s, %s]`, bucketConditionStr, keyConditionStr, algorithmConditionStr, dateConditionStr, credentialConditionStr)
retStr := "{"
retStr = retStr + expirationStr + ","
retStr = retStr + conditionStr
retStr = retStr + "}"
return []byte(retStr)
}
// newPostPolicyBytesV2 - creates a bare bones postpolicy string with key and bucket matches.
func newPostPolicyBytesV2(bucketName, objectKey string, expiration time.Time) []byte {
// Add the expiration date.
expirationStr := fmt.Sprintf(`"expiration": "%s"`, expiration.Format(expirationDateFormat))
// Add the bucket condition, only accept buckets equal to the one passed.
bucketConditionStr := fmt.Sprintf(`["eq", "$bucket", "%s"]`, bucketName)
// Add the key condition, only accept keys equal to the one passed.
keyConditionStr := fmt.Sprintf(`["eq", "$key", "%s"]`, objectKey)
// Combine all conditions into one string.
conditionStr := fmt.Sprintf(`"conditions":[%s, %s]`, bucketConditionStr, keyConditionStr)
retStr := "{"
retStr = retStr + expirationStr + ","
retStr = retStr + conditionStr
retStr = retStr + "}"
return []byte(retStr)
}
// Wrapper for calling TestPostPolicyHandlerHandler tests for both XL multiple disks and single node setup.
func TestPostPolicyHandler(t *testing.T) {
ExecObjectLayerTest(t, testPostPolicyHandler)
}
// testPostPolicyHandler - Tests validate post policy handler uploading objects.
func testPostPolicyHandler(obj ObjectLayer, instanceType string, t TestErrHandler) {
root, err := newTestConfig("us-east-1")
if err != nil {
t.Fatalf("Initializing config.json failed")
}
defer removeAll(root)
// Register event notifier.
err = initEventNotifier(obj)
if err != nil {
t.Fatalf("Initializing event notifiers failed")
}
// get random bucket name.
bucketName := getRandomBucketName()
// Register the API end points with XL/FS object layer.
apiRouter := initTestAPIEndPoints(obj, []string{"PostPolicy"})
// initialize the server and obtain the credentials and root.
// credentials are necessary to sign the HTTP request.
rootPath, err := newTestConfig("us-east-1")
if err != nil {
t.Fatalf("Init Test config failed")
}
// remove the root directory after the test ends.
defer removeAll(rootPath)
credentials := serverConfig.GetCredential()
// bucketnames[0].
// objectNames[0].
// uploadIds [0].
// Create bucket before initiating NewMultipartUpload.
err = obj.MakeBucket(bucketName)
if err != nil {
// Failed to create newbucket, abort.
t.Fatalf("%s : %s", instanceType, err.Error())
}
// Test cases for signature-V2.
testCasesV2 := []struct {
expectedStatus int
accessKey string
secretKey string
}{
{http.StatusForbidden, "invalidaccesskey", credentials.SecretAccessKey},
{http.StatusForbidden, credentials.AccessKeyID, "invalidsecretkey"},
{http.StatusNoContent, credentials.AccessKeyID, credentials.SecretAccessKey},
}
for i, test := range testCasesV2 {
// initialize HTTP NewRecorder, this records any mutations to response writer inside the handler.
rec := httptest.NewRecorder()
req, perr := newPostRequestV2("", bucketName, "testobject", test.accessKey, test.secretKey)
if perr != nil {
t.Fatalf("Test %d: %s: Failed to create HTTP request for PostPolicyHandler: <ERROR> %v", i+1, instanceType, perr)
}
// Since `apiRouter` satisfies `http.Handler` it has a ServeHTTP to execute the logic ofthe handler.
// Call the ServeHTTP to execute the handler.
apiRouter.ServeHTTP(rec, req)
if rec.Code != test.expectedStatus {
t.Fatalf("Test %d: %s: Expected the response status to be `%d`, but instead found `%d`", i+1, instanceType, test.expectedStatus, rec.Code)
}
}
// Test cases for signature-V4.
testCasesV4 := []struct {
objectName string
data []byte
expectedRespStatus int
accessKey string
secretKey string
malformedBody bool
}{
// Success case.
{
objectName: "test",
data: []byte("Hello, World"),
expectedRespStatus: http.StatusNoContent,
accessKey: credentials.AccessKeyID,
secretKey: credentials.SecretAccessKey,
malformedBody: false,
},
// Bad case invalid request.
{
objectName: "test",
data: []byte("Hello, World"),
expectedRespStatus: http.StatusBadRequest,
accessKey: "",
secretKey: "",
malformedBody: false,
},
// Bad case malformed input.
{
objectName: "test",
data: []byte("Hello, World"),
expectedRespStatus: http.StatusBadRequest,
accessKey: credentials.AccessKeyID,
secretKey: credentials.SecretAccessKey,
malformedBody: true,
},
}
for i, testCase := range testCasesV4 {
// initialize HTTP NewRecorder, this records any mutations to response writer inside the handler.
rec := httptest.NewRecorder()
req, perr := newPostRequestV4("", bucketName, testCase.objectName, testCase.data, testCase.accessKey, testCase.secretKey)
if perr != nil {
t.Fatalf("Test %d: %s: Failed to create HTTP request for PostPolicyHandler: <ERROR> %v", i+1, instanceType, perr)
}
if testCase.malformedBody {
// Change the request body.
req.Body = ioutil.NopCloser(bytes.NewReader([]byte("Hello,")))
}
// Since `apiRouter` satisfies `http.Handler` it has a ServeHTTP to execute the logic ofthe handler.
// Call the ServeHTTP to execute the handler.
apiRouter.ServeHTTP(rec, req)
if rec.Code != testCase.expectedRespStatus {
t.Errorf("Test %d: %s: Expected the response status to be `%d`, but instead found `%d`", i+1, instanceType, testCase.expectedRespStatus, rec.Code)
}
}
testCases2 := []struct {
objectName string
data []byte
expectedRespStatus int
accessKey string
secretKey string
malformedBody bool
}{
// Success case.
{
objectName: "test",
data: bytes.Repeat([]byte("a"), 1025),
expectedRespStatus: http.StatusNoContent,
accessKey: credentials.AccessKeyID,
secretKey: credentials.SecretAccessKey,
malformedBody: false,
},
// Failed with entity too small.
{
objectName: "test",
data: bytes.Repeat([]byte("a"), 1023),
expectedRespStatus: http.StatusBadRequest,
accessKey: credentials.AccessKeyID,
secretKey: credentials.SecretAccessKey,
malformedBody: false,
},
// Failed with entity too large.
{
objectName: "test",
data: bytes.Repeat([]byte("a"), (1*humanize.MiByte)+1),
expectedRespStatus: http.StatusBadRequest,
accessKey: credentials.AccessKeyID,
secretKey: credentials.SecretAccessKey,
malformedBody: false,
},
}
for i, testCase := range testCases2 {
// initialize HTTP NewRecorder, this records any mutations to response writer inside the handler.
rec := httptest.NewRecorder()
req, perr := newPostRequestV4WithContentLength("", bucketName, testCase.objectName, testCase.data, testCase.accessKey, testCase.secretKey)
if perr != nil {
t.Fatalf("Test %d: %s: Failed to create HTTP request for PostPolicyHandler: <ERROR> %v", i+1, instanceType, perr)
}
// Since `apiRouter` satisfies `http.Handler` it has a ServeHTTP to execute the logic ofthe handler.
// Call the ServeHTTP to execute the handler.
apiRouter.ServeHTTP(rec, req)
if rec.Code != testCase.expectedRespStatus {
t.Errorf("Test %d: %s: Expected the response status to be `%d`, but instead found `%d`", i+1, instanceType, testCase.expectedRespStatus, rec.Code)
}
}
}
// postPresignSignatureV4 - presigned signature for PostPolicy requests.
func postPresignSignatureV4(policyBase64 string, t time.Time, secretAccessKey, location string) string {
// Get signining key.
signingkey := getSigningKey(secretAccessKey, t, location)
// Calculate signature.
signature := getSignature(signingkey, policyBase64)
return signature
}
func newPostRequestV2(endPoint, bucketName, objectName string, accessKey, secretKey string) (*http.Request, error) {
// Expire the request five minutes from now.
expirationTime := time.Now().UTC().Add(time.Minute * 5)
// Create a new post policy.
policy := newPostPolicyBytesV2(bucketName, objectName, expirationTime)
// Only need the encoding.
encodedPolicy := base64.StdEncoding.EncodeToString(policy)
// Presign with V4 signature based on the policy.
signature := calculateSignatureV2(encodedPolicy, secretKey)
formData := map[string]string{
"AWSAccessKeyId": accessKey,
"bucket": bucketName,
"key": objectName,
"policy": encodedPolicy,
"signature": signature,
}
// Create the multipart form.
var buf bytes.Buffer
w := multipart.NewWriter(&buf)
// Set the normal formData
for k, v := range formData {
w.WriteField(k, v)
}
// Set the File formData
writer, err := w.CreateFormFile("file", "s3verify/post/object")
if err != nil {
// return nil, err
return nil, err
}
writer.Write([]byte("hello world"))
// Close before creating the new request.
w.Close()
// Set the body equal to the created policy.
reader := bytes.NewReader(buf.Bytes())
req, err := http.NewRequest("POST", makeTestTargetURL(endPoint, bucketName, objectName, nil), reader)
if err != nil {
return nil, err
}
// Set form content-type.
req.Header.Set("Content-Type", w.FormDataContentType())
return req, nil
}
func newPostRequestV4Generic(endPoint, bucketName, objectName string, objData []byte, accessKey, secretKey string, contentLengthRange bool) (*http.Request, error) {
// Keep time.
t := time.Now().UTC()
// Expire the request five minutes from now.
expirationTime := t.Add(time.Minute * 5)
// Get the user credential.
credStr := getCredential(accessKey, serverConfig.GetRegion(), t)
// Create a new post policy.
policy := newPostPolicyBytesV4(credStr, bucketName, objectName, expirationTime)
if contentLengthRange {
policy = newPostPolicyBytesV4WithContentRange(credStr, bucketName, objectName, expirationTime)
}
// Only need the encoding.
encodedPolicy := base64.StdEncoding.EncodeToString(policy)
// Presign with V4 signature based on the policy.
signature := postPresignSignatureV4(encodedPolicy, t, secretKey, serverConfig.GetRegion())
formData := map[string]string{
"bucket": bucketName,
"key": objectName,
"x-amz-credential": credStr,
"policy": encodedPolicy,
"x-amz-signature": signature,
"x-amz-date": t.Format(iso8601DateFormat),
"x-amz-algorithm": "AWS4-HMAC-SHA256",
}
// Create the multipart form.
var buf bytes.Buffer
w := multipart.NewWriter(&buf)
// Set the normal formData
for k, v := range formData {
w.WriteField(k, v)
}
// Set the File formData
writer, err := w.CreateFormFile("file", "s3verify/post/object")
if err != nil {
// return nil, err
return nil, err
}
writer.Write(objData)
// Close before creating the new request.
w.Close()
// Set the body equal to the created policy.
reader := bytes.NewReader(buf.Bytes())
req, err := http.NewRequest("POST", makeTestTargetURL(endPoint, bucketName, objectName, nil), reader)
if err != nil {
return nil, err
}
// Set form content-type.
req.Header.Set("Content-Type", w.FormDataContentType())
return req, nil
}
func newPostRequestV4WithContentLength(endPoint, bucketName, objectName string, objData []byte, accessKey, secretKey string) (*http.Request, error) {
return newPostRequestV4Generic(endPoint, bucketName, objectName, objData, accessKey, secretKey, true)
}
func newPostRequestV4(endPoint, bucketName, objectName string, objData []byte, accessKey, secretKey string) (*http.Request, error) {
return newPostRequestV4Generic(endPoint, bucketName, objectName, objData, accessKey, secretKey, false)
}