Esempio n. 1
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func unmarshalError(r *aws.Request) {
	defer r.HTTPResponse.Body.Close()

	if r.HTTPResponse.ContentLength == int64(0) {
		// No body, use status code to generate an awserr.Error
		r.Error = apierr.NewRequestError(
			apierr.New(strings.Replace(r.HTTPResponse.Status, " ", "", -1), r.HTTPResponse.Status, nil),
			r.HTTPResponse.StatusCode,
			"",
		)
		return
	}

	resp := &xmlErrorResponse{}
	err := xml.NewDecoder(r.HTTPResponse.Body).Decode(resp)
	if err != nil && err != io.EOF {
		r.Error = apierr.New("Unmarshal", "failed to decode S3 XML error response", nil)
	} else {
		r.Error = apierr.NewRequestError(
			apierr.New(resp.Code, resp.Message, nil),
			r.HTTPResponse.StatusCode,
			"",
		)
	}
}
Esempio n. 2
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// UnmarshalError unmarshals a response error for the REST JSON protocol.
func UnmarshalError(r *aws.Request) {
	code := r.HTTPResponse.Header.Get("X-Amzn-Errortype")
	bodyBytes, err := ioutil.ReadAll(r.HTTPResponse.Body)
	if err != nil {
		r.Error = apierr.New("Unmarshal", "failed reading REST JSON error response", err)
		return
	}
	if len(bodyBytes) == 0 {
		r.Error = apierr.NewRequestError(
			apierr.New("Unmarshal", r.HTTPResponse.Status, nil),
			r.HTTPResponse.StatusCode,
			"",
		)
		return
	}
	var jsonErr jsonErrorResponse
	if err := json.Unmarshal(bodyBytes, &jsonErr); err != nil {
		r.Error = apierr.New("Unmarshal", "failed decoding REST JSON error response", err)
		return
	}

	if code == "" {
		code = jsonErr.Code
	}

	codes := strings.SplitN(code, ":", 2)
	r.Error = apierr.NewRequestError(
		apierr.New(codes[0], jsonErr.Message, nil),
		r.HTTPResponse.StatusCode,
		"",
	)
}
// loadProfiles loads from the file pointed to by shared credentials filename for profile.
// The credentials retrieved from the profile will be returned or error. Error will be
// returned if it fails to read from the file, or the data is invalid.
func loadProfile(filename, profile string) (Value, error) {
	config, err := ini.LoadFile(filename)
	if err != nil {
		return Value{}, apierr.New("SharedCredsLoad", "failed to load shared credentials file", err)
	}
	iniProfile := config.Section(profile)

	id, ok := iniProfile["aws_access_key_id"]
	if !ok {
		return Value{}, apierr.New("SharedCredsAccessKey",
			fmt.Sprintf("shared credentials %s in %s did not contain aws_access_key_id", profile, filename),
			nil)
	}

	secret, ok := iniProfile["aws_secret_access_key"]
	if !ok {
		return Value{}, apierr.New("SharedCredsSecret",
			fmt.Sprintf("shared credentials %s in %s did not contain aws_secret_access_key", profile, filename),
			nil)
	}

	token := iniProfile["aws_session_token"]

	return Value{
		AccessKeyID:     id,
		SecretAccessKey: secret,
		SessionToken:    token,
	}, nil
}
Esempio n. 4
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func TestAfterRetryRefreshCreds(t *testing.T) {
	os.Clearenv()
	credProvider := &mockCredsProvider{}
	svc := NewService(&Config{Credentials: credentials.NewCredentials(credProvider), MaxRetries: 1})

	svc.Handlers.Clear()
	svc.Handlers.ValidateResponse.PushBack(func(r *Request) {
		r.Error = apierr.New("UnknownError", "", nil)
		r.HTTPResponse = &http.Response{StatusCode: 400}
	})
	svc.Handlers.UnmarshalError.PushBack(func(r *Request) {
		r.Error = apierr.New("ExpiredTokenException", "", nil)
	})
	svc.Handlers.AfterRetry.PushBack(func(r *Request) {
		AfterRetryHandler(r)
	})

	assert.True(t, svc.Config.Credentials.IsExpired(), "Expect to start out expired")
	assert.False(t, credProvider.retreiveCalled)

	req := NewRequest(svc, &Operation{Name: "Operation"}, nil, nil)
	req.Send()

	assert.True(t, svc.Config.Credentials.IsExpired())
	assert.False(t, credProvider.retreiveCalled)

	_, err := svc.Config.Credentials.Get()
	assert.NoError(t, err)
	assert.True(t, credProvider.retreiveCalled)
}
Esempio n. 5
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// UnmarshalError unmarshals an error response for a JSON RPC service.
func UnmarshalError(req *aws.Request) {
	defer req.HTTPResponse.Body.Close()
	bodyBytes, err := ioutil.ReadAll(req.HTTPResponse.Body)
	if err != nil {
		req.Error = apierr.New("Unmarshal", "failed reading JSON RPC error response", err)
		return
	}
	if len(bodyBytes) == 0 {
		req.Error = apierr.NewRequestError(
			apierr.New("Unmarshal", req.HTTPResponse.Status, nil),
			req.HTTPResponse.StatusCode,
			"",
		)
		return
	}
	var jsonErr jsonErrorResponse
	if err := json.Unmarshal(bodyBytes, &jsonErr); err != nil {
		req.Error = apierr.New("Unmarshal", "failed decoding JSON RPC error response", err)
		return
	}

	codes := strings.SplitN(jsonErr.Code, "#", 2)
	req.Error = apierr.NewRequestError(
		apierr.New(codes[len(codes)-1], jsonErr.Message, nil),
		req.HTTPResponse.StatusCode,
		"",
	)
}
Esempio n. 6
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func unmarshalError(req *Request) {
	bodyBytes, err := ioutil.ReadAll(req.HTTPResponse.Body)
	if err != nil {
		req.Error = apierr.New("UnmarshaleError", req.HTTPResponse.Status, err)
		return
	}
	if len(bodyBytes) == 0 {
		req.Error = apierr.NewRequestError(
			apierr.New("UnmarshaleError", req.HTTPResponse.Status, fmt.Errorf("empty body")),
			req.HTTPResponse.StatusCode,
			"",
		)
		return
	}
	var jsonErr jsonErrorResponse
	if err := json.Unmarshal(bodyBytes, &jsonErr); err != nil {
		req.Error = apierr.New("UnmarshaleError", "JSON unmarshal", err)
		return
	}
	req.Error = apierr.NewRequestError(
		apierr.New(jsonErr.Code, jsonErr.Message, nil),
		req.HTTPResponse.StatusCode,
		"",
	)
}
Esempio n. 7
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func TestChainProviderWithNoValidProvider(t *testing.T) {
	p := &ChainProvider{
		Providers: []Provider{
			&stubProvider{err: apierr.New("FirstError", "first provider error", nil)},
			&stubProvider{err: apierr.New("SecondError", "second provider error", nil)},
		},
	}

	assert.True(t, p.IsExpired(), "Expect expired with no providers")
	_, err := p.Retrieve()
	assert.Equal(t, ErrNoValidProvidersFoundInChain, err, "Expect no providers error returned")
}
Esempio n. 8
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// upload will perform a multipart upload using the firstPart buffer containing
// the first chunk of data.
func (u *multiuploader) upload(firstPart []byte) (*UploadOutput, error) {
	// Create the multipart
	resp, err := u.s.CreateMultipartUpload(&s3.CreateMultipartUploadInput{
		Bucket: u.in.Bucket,
		Key:    u.in.Key,
	})
	if err != nil {
		return nil, err
	}
	u.uploadID = *resp.UploadID

	// Create the workers
	ch := make(chan chunk, u.opts.Concurrency)
	for i := 0; i < u.opts.Concurrency; i++ {
		u.wg.Add(1)
		go u.readChunk(ch)
	}

	// Send part 1 to the workers
	var num int64 = 1
	ch <- chunk{buf: firstPart, num: num}

	// Read and queue the rest of the parts
	for u.geterr() == nil {
		num++

		packet := make([]byte, u.opts.PartSize)
		n, err := io.ReadFull(u.in.Body, packet)
		ch <- chunk{buf: packet[0:n], num: num}
		if err != nil {
			if err != io.EOF && err != io.ErrUnexpectedEOF {
				u.seterr(apierr.New("ReadRequestBody", "read multipart upload data failed", err))
			}
			break
		}
	}

	// Close the channel, wait for workers, and complete upload
	close(ch)
	u.wg.Wait()
	complete := u.complete()

	if err := u.geterr(); err != nil {
		return nil, &multiUploadError{
			BaseError: apierr.New("MultipartUpload", "upload multipart failed", err),
			uploadID:  u.uploadID,
		}
	}
	return &UploadOutput{
		Location: *complete.Location,
		UploadID: u.uploadID,
	}, nil
}
Esempio n. 9
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// UnmarshalError unmarshals an error response for an AWS Query service.
func UnmarshalError(r *aws.Request) {
	defer r.HTTPResponse.Body.Close()

	resp := &xmlErrorResponse{}
	err := xml.NewDecoder(r.HTTPResponse.Body).Decode(resp)
	if err != nil && err != io.EOF {
		r.Error = apierr.New("Unmarshal", "failed to decode query XML error response", err)
	} else {
		r.Error = apierr.NewRequestError(
			apierr.New(resp.Code, resp.Message, nil),
			r.HTTPResponse.StatusCode,
			resp.RequestID,
		)
	}
}
Esempio n. 10
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// Build builds a JSON payload for a JSON RPC request.
func Build(req *aws.Request) {
	var buf []byte
	var err error
	if req.ParamsFilled() {
		buf, err = jsonutil.BuildJSON(req.Params)
		if err != nil {
			req.Error = apierr.New("Marshal", "failed encoding JSON RPC request", err)
			return
		}
	} else {
		buf = emptyJSON
	}

	if req.Service.TargetPrefix != "" || string(buf) != "{}" {
		req.SetBufferBody(buf)
	}

	if req.Service.TargetPrefix != "" {
		target := req.Service.TargetPrefix + "." + req.Operation.Name
		req.HTTPRequest.Header.Add("X-Amz-Target", target)
	}
	if req.Service.JSONVersion != "" {
		jsonVersion := req.Service.JSONVersion
		req.HTTPRequest.Header.Add("Content-Type", "application/x-amz-json-"+jsonVersion)
	}
}
Esempio n. 11
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// Retrieve retrieves credentials from the EC2 service.
// Error will be returned if the request fails, or unable to extract
// the desired credentials.
func (m *EC2RoleProvider) Retrieve() (Value, error) {
	if m.Client == nil {
		m.Client = http.DefaultClient
	}
	if m.Endpoint == "" {
		m.Endpoint = metadataCredentialsEndpoint
	}

	credsList, err := requestCredList(m.Client, m.Endpoint)
	if err != nil {
		return Value{}, err
	}

	if len(credsList) == 0 {
		return Value{}, apierr.New("EmptyEC2RoleList", "empty EC2 Role list", nil)
	}
	credsName := credsList[0]

	roleCreds, err := requestCred(m.Client, m.Endpoint, credsName)
	if err != nil {
		return Value{}, err
	}

	m.expiresOn = roleCreds.Expiration
	if m.ExpiryWindow > 0 {
		// Offset based on expiry window if set.
		m.expiresOn = m.expiresOn.Add(-m.ExpiryWindow)
	}

	return Value{
		AccessKeyID:     roleCreds.AccessKeyID,
		SecretAccessKey: roleCreds.SecretAccessKey,
		SessionToken:    roleCreds.Token,
	}, nil
}
Esempio n. 12
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func buildHeader(r *aws.Request, v reflect.Value, name string) {
	str, err := convertType(v)
	if err != nil {
		r.Error = apierr.New("Marshal", "failed to encode REST request", err)
	} else if str != nil {
		r.HTTPRequest.Header.Add(name, *str)
	}
}
Esempio n. 13
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func buildQueryString(r *aws.Request, v reflect.Value, name string, query url.Values) {
	str, err := convertType(v)
	if err != nil {
		r.Error = apierr.New("Marshal", "failed to encode REST request", err)
	} else if str != nil {
		query.Set(name, *str)
	}
}
Esempio n. 14
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// requestCred requests the credentials for a specific credentials from the EC2 service.
//
// If the credentials cannot be found, or there is an error reading the response
// and error will be returned.
func requestCred(client *http.Client, endpoint, credsName string) (*ec2RoleCredRespBody, error) {
	resp, err := client.Get(endpoint + credsName)
	if err != nil {
		return nil, apierr.New("GetEC2RoleCredentials",
			fmt.Sprintf("failed to get %s EC2 Role credentials", credsName),
			err)
	}
	defer resp.Body.Close()

	respCreds := &ec2RoleCredRespBody{}
	if err := json.NewDecoder(resp.Body).Decode(respCreds); err != nil {
		return nil, apierr.New("DecodeEC2RoleCredentials",
			fmt.Sprintf("failed to decode %s EC2 Role credentials", credsName),
			err)
	}

	return respCreds, nil
}
Esempio n. 15
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// Unmarshal unmarshals a response for a JSON RPC service.
func Unmarshal(req *aws.Request) {
	defer req.HTTPResponse.Body.Close()
	if req.DataFilled() {
		err := jsonutil.UnmarshalJSON(req.Data, req.HTTPResponse.Body)
		if err != nil {
			req.Error = apierr.New("Unmarshal", "failed decoding JSON RPC response", err)
		}
	}
	return
}
Esempio n. 16
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// requestCredList requests a list of credentials from the EC2 service.
// If there are no credentials, or there is an error making or receiving the request
func requestCredList(client *http.Client, endpoint string) ([]string, error) {
	resp, err := client.Get(endpoint)
	if err != nil {
		return nil, apierr.New("ListEC2Role", "failed to list EC2 Roles", err)
	}
	defer resp.Body.Close()

	credsList := []string{}
	s := bufio.NewScanner(resp.Body)
	for s.Scan() {
		credsList = append(credsList, s.Text())
	}

	if err := s.Err(); err != nil {
		return nil, apierr.New("ReadEC2Role", "failed to read list of EC2 Roles", err)
	}

	return credsList, nil
}
Esempio n. 17
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func buildHeaderMap(r *aws.Request, v reflect.Value, prefix string) {
	for _, key := range v.MapKeys() {
		str, err := convertType(v.MapIndex(key))
		if err != nil {
			r.Error = apierr.New("Marshal", "failed to encode REST request", err)
		} else if str != nil {
			r.HTTPRequest.Header.Add(prefix+key.String(), *str)
		}
	}
}
Esempio n. 18
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func buildURI(r *aws.Request, v reflect.Value, name string) {
	value, err := convertType(v)
	if err != nil {
		r.Error = apierr.New("Marshal", "failed to encode REST request", err)
	} else if value != nil {
		uri := r.HTTPRequest.URL.Path
		uri = strings.Replace(uri, "{"+name+"}", EscapePath(*value, true), -1)
		uri = strings.Replace(uri, "{"+name+"+}", EscapePath(*value, false), -1)
		r.HTTPRequest.URL.Path = uri
	}
}
Esempio n. 19
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// internal logic for deciding whether to upload a single part or use a
// multipart upload.
func (u *uploader) upload() (*UploadOutput, error) {
	// Try to get the total size for some optimizations
	u.initSize()

	if u.opts.PartSize < MinUploadPartSize {
		msg := fmt.Sprintf("part size must be at least %d bytes", MinUploadPartSize)
		return nil, apierr.New("ConfigError", msg, nil)
	}

	// Do one read to determine if we have more than one part
	buf, err := u.nextReader()
	if err == io.EOF || err == io.ErrUnexpectedEOF { // single part
		return u.singlePart(buf)
	} else if err != nil {
		return nil, apierr.New("ReadRequestBody", "read upload data failed", err)
	}

	mu := multiuploader{uploader: u}
	return mu.upload(buf)
}
Esempio n. 20
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// Unmarshal unmarshals a response for an AWS Query service.
func Unmarshal(r *aws.Request) {
	defer r.HTTPResponse.Body.Close()
	if r.DataFilled() {
		decoder := xml.NewDecoder(r.HTTPResponse.Body)
		err := xmlutil.UnmarshalXML(r.Data, decoder, r.Operation.Name+"Result")
		if err != nil {
			r.Error = apierr.New("Unmarshal", "failed decoding Query response", err)
			return
		}
	}
}
Esempio n. 21
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// Unmarshal unmarshals a payload response for the REST XML protocol.
func Unmarshal(r *aws.Request) {
	if t := rest.PayloadType(r.Data); t == "structure" || t == "" {
		defer r.HTTPResponse.Body.Close()
		decoder := xml.NewDecoder(r.HTTPResponse.Body)
		err := xmlutil.UnmarshalXML(r.Data, decoder, "")
		if err != nil {
			r.Error = apierr.New("Unmarshal", "failed to decode REST XML response", err)
			return
		}
	}
}
Esempio n. 22
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// ValidateParameters is a request handler to validate the input parameters.
// Validating parameters only has meaning if done prior to the request being sent.
func ValidateParameters(r *Request) {
	if r.ParamsFilled() {
		v := validator{errors: []string{}}
		v.validateAny(reflect.ValueOf(r.Params), "")

		if count := len(v.errors); count > 0 {
			format := "%d validation errors:\n- %s"
			msg := fmt.Sprintf(format, count, strings.Join(v.errors, "\n- "))
			r.Error = apierr.New("InvalidParameter", msg, nil)
		}
	}
}
Esempio n. 23
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func TestChainProviderGet(t *testing.T) {
	p := &ChainProvider{
		Providers: []Provider{
			&stubProvider{err: apierr.New("FirstError", "first provider error", nil)},
			&stubProvider{err: apierr.New("SecondError", "second provider error", nil)},
			&stubProvider{
				creds: Value{
					AccessKeyID:     "AKID",
					SecretAccessKey: "SECRET",
					SessionToken:    "",
				},
			},
		},
	}

	creds, err := p.Retrieve()
	assert.Nil(t, err, "Expect no error")
	assert.Equal(t, "AKID", creds.AccessKeyID, "Expect access key ID to match")
	assert.Equal(t, "SECRET", creds.SecretAccessKey, "Expect secret access key to match")
	assert.Empty(t, creds.SessionToken, "Expect session token to be empty")
}
Esempio n. 24
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func unmarshalBody(r *aws.Request, v reflect.Value) {
	if field, ok := v.Type().FieldByName("SDKShapeTraits"); ok {
		if payloadName := field.Tag.Get("payload"); payloadName != "" {
			pfield, _ := v.Type().FieldByName(payloadName)
			if ptag := pfield.Tag.Get("type"); ptag != "" && ptag != "structure" {
				payload := v.FieldByName(payloadName)
				if payload.IsValid() {
					switch payload.Interface().(type) {
					case []byte:
						b, err := ioutil.ReadAll(r.HTTPResponse.Body)
						if err != nil {
							r.Error = apierr.New("Unmarshal", "failed to decode REST response", err)
						} else {
							payload.Set(reflect.ValueOf(b))
						}
					case *string:
						b, err := ioutil.ReadAll(r.HTTPResponse.Body)
						if err != nil {
							r.Error = apierr.New("Unmarshal", "failed to decode REST response", err)
						} else {
							str := string(b)
							payload.Set(reflect.ValueOf(&str))
						}
					default:
						switch payload.Type().String() {
						case "io.ReadSeeker":
							payload.Set(reflect.ValueOf(aws.ReadSeekCloser(r.HTTPResponse.Body)))
						case "aws.ReadSeekCloser", "io.ReadCloser":
							payload.Set(reflect.ValueOf(r.HTTPResponse.Body))
						default:
							r.Error = apierr.New("Unmarshal",
								"failed to decode REST response",
								fmt.Errorf("unknown payload type %s", payload.Type()))
						}
					}
				}
			}
		}
	}
}
Esempio n. 25
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// internal logic for deciding whether to upload a single part or use a
// multipart upload.
func (u *uploader) upload() (*UploadOutput, error) {
	// Do one read to determine if we have more than one part
	packet := make([]byte, u.opts.PartSize)
	n, err := io.ReadFull(u.in.Body, packet)
	if err == io.EOF || err == io.ErrUnexpectedEOF { // single part
		return u.singlePart(packet[0:n])
	} else if err != nil {
		return nil, apierr.New("ReadRequestBody", "read upload data failed", err)
	}

	mu := multiuploader{uploader: u}
	return mu.upload(packet)
}
Esempio n. 26
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// Build builds a request payload for the REST XML protocol.
func Build(r *aws.Request) {
	rest.Build(r)

	if t := rest.PayloadType(r.Params); t == "structure" || t == "" {
		var buf bytes.Buffer
		err := xmlutil.BuildXML(r.Params, xml.NewEncoder(&buf))
		if err != nil {
			r.Error = apierr.New("Marshal", "failed to enode rest XML request", err)
			return
		}
		r.SetBufferBody(buf.Bytes())
	}
}
Esempio n. 27
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// contentMD5 computes and sets the HTTP Content-MD5 header for requests that
// require it.
func contentMD5(r *aws.Request) {
	h := md5.New()

	// hash the body.  seek back to the first position after reading to reset
	// the body for transmission.  copy errors may be assumed to be from the
	// body.
	_, err := io.Copy(h, r.Body)
	if err != nil {
		r.Error = apierr.New("ContentMD5", "failed to read body", err)
		return
	}
	_, err = r.Body.Seek(0, 0)
	if err != nil {
		r.Error = apierr.New("ContentMD5", "failed to seek body", err)
		return
	}

	// encode the md5 checksum in base64 and set the request header.
	sum := h.Sum(nil)
	sum64 := make([]byte, base64.StdEncoding.EncodedLen(len(sum)))
	base64.StdEncoding.Encode(sum64, sum)
	r.HTTPRequest.Header.Set("Content-MD5", string(sum64))
}
Esempio n. 28
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func unmarshalLocationElements(r *aws.Request, v reflect.Value) {
	for i := 0; i < v.NumField(); i++ {
		m, field := v.Field(i), v.Type().Field(i)
		if n := field.Name; n[0:1] == strings.ToLower(n[0:1]) {
			continue
		}

		if m.IsValid() {
			name := field.Tag.Get("locationName")
			if name == "" {
				name = field.Name
			}

			switch field.Tag.Get("location") {
			case "statusCode":
				unmarshalStatusCode(m, r.HTTPResponse.StatusCode)
			case "header":
				err := unmarshalHeader(m, r.HTTPResponse.Header.Get(name))
				if err != nil {
					r.Error = apierr.New("Unmarshal", "failed to decode REST response", err)
					break
				}
			case "headers":
				prefix := field.Tag.Get("locationName")
				err := unmarshalHeaderMap(m, r.HTTPResponse.Header, prefix)
				if err != nil {
					r.Error = apierr.New("Unmarshal", "failed to decode REST response", err)
					break
				}
			}
		}
		if r.Error != nil {
			return
		}
	}
}
Esempio n. 29
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func buildGetBucketLocation(r *aws.Request) {
	if r.DataFilled() {
		out := r.Data.(*GetBucketLocationOutput)
		b, err := ioutil.ReadAll(r.HTTPResponse.Body)
		if err != nil {
			r.Error = apierr.New("Unmarshal", "failed reading response body", err)
			return
		}

		match := reBucketLocation.FindSubmatch(b)
		if len(match) > 1 {
			loc := string(match[1])
			out.LocationConstraint = &loc
		}
	}
}
Esempio n. 30
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// Build builds a request for the EC2 protocol.
func Build(r *aws.Request) {
	body := url.Values{
		"Action":  {r.Operation.Name},
		"Version": {r.Service.APIVersion},
	}
	if err := queryutil.Parse(body, r.Params, true); err != nil {
		r.Error = apierr.New("Marshal", "failed encoding EC2 Query request", err)
	}

	if r.ExpireTime == 0 {
		r.HTTPRequest.Method = "POST"
		r.HTTPRequest.Header.Set("Content-Type", "application/x-www-form-urlencoded; charset=utf-8")
		r.SetBufferBody([]byte(body.Encode()))
	} else { // This is a pre-signed request
		r.HTTPRequest.Method = "GET"
		r.HTTPRequest.URL.RawQuery = body.Encode()
	}
}