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fix: make sure getObject returns error on truncated responses
this PR also adds tests to handle these cases specially fixes minio#1451
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,119 @@ | ||
| /* | ||
| * MinIO Go Library for Amazon S3 Compatible Cloud Storage | ||
| * Copyright 2021 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 minio | ||
|
|
||
| import ( | ||
| "context" | ||
| "io" | ||
| "io/ioutil" | ||
| "net/http" | ||
| "net/http/httptest" | ||
| "testing" | ||
| ) | ||
|
|
||
| func TestGetObjectReturnSuccess(t *testing.T) { | ||
| srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { | ||
| w.Header().Set("Last-Modified", "Wed, 21 Oct 2015 07:28:00 GMT") | ||
| w.Header().Set("Content-Length", "5") | ||
|
|
||
| // Write less bytes than the content length. | ||
| w.Write([]byte("12345")) | ||
| })) | ||
| defer srv.Close() | ||
|
|
||
| // New - instantiate minio client with options | ||
| clnt, err := New(srv.Listener.Addr().String(), &Options{ | ||
| Region: "us-east-1", | ||
| }) | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
|
|
||
| obj, err := clnt.GetObject(context.Background(), "bucketName", "objectName", GetObjectOptions{}) | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
|
|
||
| // We expect an error when reading back. | ||
| buf, err := ioutil.ReadAll(obj) | ||
| if err != nil { | ||
| t.Fatalf("Expected 'nil', got %v", err) | ||
| } | ||
|
|
||
| if len(buf) != 5 { | ||
| t.Fatalf("Expected read bytes '5', got %v", len(buf)) | ||
| } | ||
| } | ||
|
|
||
| func TestGetObjectReturnErrorIfServerTruncatesResponse(t *testing.T) { | ||
| srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { | ||
| w.Header().Set("Last-Modified", "Wed, 21 Oct 2015 07:28:00 GMT") | ||
| w.Header().Set("Content-Length", "100") | ||
|
|
||
| // Write less bytes than the content length. | ||
| w.Write([]byte("12345")) | ||
| })) | ||
| defer srv.Close() | ||
|
|
||
| // New - instantiate minio client with options | ||
| clnt, err := New(srv.Listener.Addr().String(), &Options{ | ||
| Region: "us-east-1", | ||
| }) | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
|
|
||
| obj, err := clnt.GetObject(context.Background(), "bucketName", "objectName", GetObjectOptions{}) | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
|
|
||
| // We expect an error when reading back. | ||
| if _, err = ioutil.ReadAll(obj); err != io.ErrUnexpectedEOF { | ||
| t.Fatalf("Expected %v, got %v", io.ErrUnexpectedEOF, err) | ||
| } | ||
| } | ||
|
|
||
| func TestGetObjectReturnErrorIfServerSendsMore(t *testing.T) { | ||
| srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { | ||
| w.Header().Set("Last-Modified", "Wed, 21 Oct 2015 07:28:00 GMT") | ||
| w.Header().Set("Content-Length", "1") | ||
|
|
||
| // Write less bytes than the content length. | ||
| w.Write([]byte("12345")) | ||
| })) | ||
| defer srv.Close() | ||
|
|
||
| // New - instantiate minio client with options | ||
| clnt, err := New(srv.Listener.Addr().String(), &Options{ | ||
| Region: "us-east-1", | ||
| }) | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
|
|
||
| obj, err := clnt.GetObject(context.Background(), "bucketName", "objectName", GetObjectOptions{}) | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
|
|
||
| // We expect an error when reading back. | ||
| if _, err = ioutil.ReadAll(obj); err != io.ErrUnexpectedEOF { | ||
| t.Fatalf("Expected %v, got %v", io.ErrUnexpectedEOF, err) | ||
| } | ||
| } |
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