TrueCloudLab/frostfs-s3-gw
17
3
Fork 19
Code Issues 28 Pull requests 7 Projects Releases 18 Packages Activity Actions

[#264] Adopt minio code distributed with AGPLv3 license in gateway components

Browse source 
Signed-off-by: Alex Vanin <alexey@nspcc.ru>
This commit is contained in:
Alex Vanin 2021-09-15 12:32:26 +03:00 committed by Alex Vanin
parent 15023b9371
commit 16296490ee
10 changed files with 2322 additions and 3542 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1916
api/errors/errors.go
View file

File diff suppressed because it is too large Load diff

110
api/handler/s3encoder.go
View file

@ -1 +1,111 @@
package handler package handler
import (
"strings"
)
type encoding int
const (
encodePathSegment encoding = iota
encodeQueryComponent
)
const (
urlEncodingType = "url"
upperhex = "0123456789ABCDEF"
)
func shouldEscape(c byte) bool {
if 'A' <= c && c <= 'Z' || 'a' <= c && c <= 'z' || '0' <= c && c <= '9' {
return false
}
switch c {
case '-', '_', '.', '/', '*':
return false
}
return true
}
// s3URLEncode is based on url.QueryEscape() code,
// while considering some S3 exceptions.
func s3URLEncode(s string, mode encoding) string {
spaceCount, hexCount := 0, 0
for i := 0; i < len(s); i++ {
c := s[i]
if shouldEscape(c) {
if c == ' ' && mode == encodeQueryComponent {
spaceCount++
} else {
hexCount++
}
}
}
if spaceCount == 0 && hexCount == 0 {
return s
}
var buf [64]byte
var t []byte
required := len(s) + 2*hexCount
if required <= len(buf) {
t = buf[:required]
} else {
t = make([]byte, required)
}
if hexCount == 0 {
copy(t, s)
for i := 0; i < len(s); i++ {
if s[i] == ' ' {
t[i] = '+'
}
}
return string(t)
}
j := 0
for i := 0; i < len(s); i++ {
switch c := s[i]; {
case c == ' ' && mode == encodeQueryComponent:
t[j] = '+'
j++
case shouldEscape(c):
t[j] = '%'
t[j+1] = upperhex[c>>4]
t[j+2] = upperhex[c&15]
j += 3
default:
t[j] = s[i]
j++
}
}
return string(t)
}
func s3QueryEncode(name string, encodingType string) (result string) {
if encodingType == "" {
return name
}
encodingType = strings.ToLower(encodingType)
switch encodingType {
case urlEncodingType:
return s3URLEncode(name, encodeQueryComponent)
}
return name
}
func s3PathEncode(name string, encodingType string) (result string) {
if encodingType == "" {
return name
}
encodingType = strings.ToLower(encodingType)
switch encodingType {
case urlEncodingType:
return s3URLEncode(name, encodePathSegment)
}
return name
}

2235
api/minio/api-errors.go
View file

File diff suppressed because it is too large Load diff

842
api/minio/api-response.go
View file

@ -1,842 +0,0 @@
// Copyright (c) 2015-2021 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package cmd
import (
"context"
"encoding/base64"
"encoding/xml"
"fmt"
"net/http"
"net/url"
"path"
"strconv"
"strings"
"time"
"github.com/minio/minio/internal/crypto"
"github.com/minio/minio/internal/handlers"
xhttp "github.com/minio/minio/internal/http"
"github.com/minio/minio/internal/logger"
)
const (
// RFC3339 a subset of the ISO8601 timestamp format. e.g 2014-04-29T18:30:38Z
iso8601TimeFormat = "2006-01-02T15:04:05.000Z" // Reply date format with nanosecond precision.
maxObjectList = 1000 // Limit number of objects in a listObjectsResponse/listObjectsVersionsResponse.
maxDeleteList = 10000 // Limit number of objects deleted in a delete call.
maxUploadsList = 10000 // Limit number of uploads in a listUploadsResponse.
maxPartsList = 10000 // Limit number of parts in a listPartsResponse.
)
// LocationResponse - format for location response.
type LocationResponse struct {
XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ LocationConstraint" json:"-"`
Location string `xml:",chardata"`
}
// PolicyStatus captures information returned by GetBucketPolicyStatusHandler
type PolicyStatus struct {
XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ PolicyStatus" json:"-"`
IsPublic string
}
// ListVersionsResponse - format for list bucket versions response.
type ListVersionsResponse struct {
XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ ListVersionsResult" json:"-"`
Name string
Prefix string
KeyMarker string
// When response is truncated (the IsTruncated element value in the response
// is true), you can use the key name in this field as marker in the subsequent
// request to get next set of objects. Server lists objects in alphabetical
// order Note: This element is returned only if you have delimiter request parameter
// specified. If response does not include the NextMaker and it is truncated,
// you can use the value of the last Key in the response as the marker in the
// subsequent request to get the next set of object keys.
NextKeyMarker string `xml:"NextKeyMarker,omitempty"`
// When the number of responses exceeds the value of MaxKeys,
// NextVersionIdMarker specifies the first object version not
// returned that satisfies the search criteria. Use this value
// for the version-id-marker request parameter in a subsequent request.
NextVersionIDMarker string `xml:"NextVersionIdMarker"`
// Marks the last version of the Key returned in a truncated response.
VersionIDMarker string `xml:"VersionIdMarker"`
MaxKeys int
Delimiter string
// A flag that indicates whether or not ListObjects returned all of the results
// that satisfied the search criteria.
IsTruncated bool
CommonPrefixes []CommonPrefix
Versions []ObjectVersion
// Encoding type used to encode object keys in the response.
EncodingType string `xml:"EncodingType,omitempty"`
}
// ListObjectsResponse - format for list objects response.
type ListObjectsResponse struct {
XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ ListBucketResult" json:"-"`
Name string
Prefix string
Marker string
// When response is truncated (the IsTruncated element value in the response
// is true), you can use the key name in this field as marker in the subsequent
// request to get next set of objects. Server lists objects in alphabetical
// order Note: This element is returned only if you have delimiter request parameter
// specified. If response does not include the NextMaker and it is truncated,
// you can use the value of the last Key in the response as the marker in the
// subsequent request to get the next set of object keys.
NextMarker string `xml:"NextMarker,omitempty"`
MaxKeys int
Delimiter string
// A flag that indicates whether or not ListObjects returned all of the results
// that satisfied the search criteria.
IsTruncated bool
Contents []Object
CommonPrefixes []CommonPrefix
// Encoding type used to encode object keys in the response.
EncodingType string `xml:"EncodingType,omitempty"`
}
// ListObjectsV2Response - format for list objects response.
type ListObjectsV2Response struct {
XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ ListBucketResult" json:"-"`
Name string
Prefix string
StartAfter string `xml:"StartAfter,omitempty"`
// When response is truncated (the IsTruncated element value in the response
// is true), you can use the key name in this field as marker in the subsequent
// request to get next set of objects. Server lists objects in alphabetical
// order Note: This element is returned only if you have delimiter request parameter
// specified. If response does not include the NextMaker and it is truncated,
// you can use the value of the last Key in the response as the marker in the
// subsequent request to get the next set of object keys.
ContinuationToken string `xml:"ContinuationToken,omitempty"`
NextContinuationToken string `xml:"NextContinuationToken,omitempty"`
KeyCount int
MaxKeys int
Delimiter string
// A flag that indicates whether or not ListObjects returned all of the results
// that satisfied the search criteria.
IsTruncated bool
Contents []Object
CommonPrefixes []CommonPrefix
// Encoding type used to encode object keys in the response.
EncodingType string `xml:"EncodingType,omitempty"`
}
// Part container for part metadata.
type Part struct {
PartNumber int
LastModified string
ETag string
Size int64
}
// ListPartsResponse - format for list parts response.
type ListPartsResponse struct {
XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ ListPartsResult" json:"-"`
Bucket string
Key string
UploadID string `xml:"UploadId"`
Initiator Initiator
Owner Owner
// The class of storage used to store the object.
StorageClass string
PartNumberMarker int
NextPartNumberMarker int
MaxParts int
IsTruncated bool
// List of parts.
Parts []Part `xml:"Part"`
}
// ListMultipartUploadsResponse - format for list multipart uploads response.
type ListMultipartUploadsResponse struct {
XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ ListMultipartUploadsResult" json:"-"`
Bucket string
KeyMarker string
UploadIDMarker string `xml:"UploadIdMarker"`
NextKeyMarker string
NextUploadIDMarker string `xml:"NextUploadIdMarker"`
Delimiter string
Prefix string
EncodingType string `xml:"EncodingType,omitempty"`
MaxUploads int
IsTruncated bool
// List of pending uploads.
Uploads []Upload `xml:"Upload"`
// Delimed common prefixes.
CommonPrefixes []CommonPrefix
}
// ListBucketsResponse - format for list buckets response
type ListBucketsResponse struct {
XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ ListAllMyBucketsResult" json:"-"`
Owner Owner
// Container for one or more buckets.
Buckets struct {
Buckets []Bucket `xml:"Bucket"`
} // Buckets are nested
}
// Upload container for in progress multipart upload
type Upload struct {
Key string
UploadID string `xml:"UploadId"`
Initiator Initiator
Owner Owner
StorageClass string
Initiated string
}
// CommonPrefix container for prefix response in ListObjectsResponse
type CommonPrefix struct {
Prefix string
}
// Bucket container for bucket metadata
type Bucket struct {
Name string
CreationDate string // time string of format "2006-01-02T15:04:05.000Z"
}
// ObjectVersion container for object version metadata
type ObjectVersion struct {
Object
IsLatest bool
VersionID string `xml:"VersionId"`
isDeleteMarker bool
}
// MarshalXML - marshal ObjectVersion
func (o ObjectVersion) MarshalXML(e *xml.Encoder, start xml.StartElement) error {
if o.isDeleteMarker {
start.Name.Local = "DeleteMarker"
} else {
start.Name.Local = "Version"
}
type objectVersionWrapper ObjectVersion
return e.EncodeElement(objectVersionWrapper(o), start)
}
// StringMap is a map[string]string.
type StringMap map[string]string
// MarshalXML - StringMap marshals into XML.
func (s StringMap) MarshalXML(e *xml.Encoder, start xml.StartElement) error {
tokens := []xml.Token{start}
for key, value := range s {
t := xml.StartElement{}
t.Name = xml.Name{
Space: "",
Local: key,
}
tokens = append(tokens, t, xml.CharData(value), xml.EndElement{Name: t.Name})
}
tokens = append(tokens, xml.EndElement{
Name: start.Name,
})
for _, t := range tokens {
if err := e.EncodeToken(t); err != nil {
return err
}
}
// flush to ensure tokens are written
return e.Flush()
}
// Object container for object metadata
type Object struct {
Key string
LastModified string // time string of format "2006-01-02T15:04:05.000Z"
ETag string
Size int64
// Owner of the object.
Owner Owner
// The class of storage used to store the object.
StorageClass string
// UserMetadata user-defined metadata
UserMetadata StringMap `xml:"UserMetadata,omitempty"`
}
// CopyObjectResponse container returns ETag and LastModified of the successfully copied object
type CopyObjectResponse struct {
XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ CopyObjectResult" json:"-"`
LastModified string // time string of format "2006-01-02T15:04:05.000Z"
ETag string // md5sum of the copied object.
}
// CopyObjectPartResponse container returns ETag and LastModified of the successfully copied object
type CopyObjectPartResponse struct {
XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ CopyPartResult" json:"-"`
LastModified string // time string of format "2006-01-02T15:04:05.000Z"
ETag string // md5sum of the copied object part.
}
// Initiator inherit from Owner struct, fields are same
type Initiator Owner
// Owner - bucket owner/principal
type Owner struct {
ID string
DisplayName string
}
// InitiateMultipartUploadResponse container for InitiateMultiPartUpload response, provides uploadID to start MultiPart upload
type InitiateMultipartUploadResponse struct {
XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ InitiateMultipartUploadResult" json:"-"`
Bucket string
Key string
UploadID string `xml:"UploadId"`
}
// CompleteMultipartUploadResponse container for completed multipart upload response
type CompleteMultipartUploadResponse struct {
XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ CompleteMultipartUploadResult" json:"-"`
Location string
Bucket string
Key string
ETag string
}
// DeleteError structure.
type DeleteError struct {
Code string
Message string
Key string
VersionID string `xml:"VersionId"`
}
// DeleteObjectsResponse container for multiple object deletes.
type DeleteObjectsResponse struct {
XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ DeleteResult" json:"-"`
// Collection of all deleted objects
DeletedObjects []DeletedObject `xml:"Deleted,omitempty"`
// Collection of errors deleting certain objects.
Errors []DeleteError `xml:"Error,omitempty"`
}
// PostResponse container for POST object request when success_action_status is set to 201
type PostResponse struct {
Bucket string
Key string
ETag string
Location string
}
// returns "https" if the tls boolean is true, "http" otherwise.
func getURLScheme(tls bool) string {
if tls {
return httpsScheme
}
return httpScheme
}
// getObjectLocation gets the fully qualified URL of an object.
func getObjectLocation(r *http.Request, domains []string, bucket, object string) string {
// unit tests do not have host set.
if r.Host == "" {
return path.Clean(r.URL.Path)
}
proto := handlers.GetSourceScheme(r)
if proto == "" {
proto = getURLScheme(globalIsTLS)
}
u := &url.URL{
Host: r.Host,
Path: path.Join(SlashSeparator, bucket, object),
Scheme: proto,
}
// If domain is set then we need to use bucket DNS style.
for _, domain := range domains {
if strings.HasPrefix(r.Host, bucket+"."+domain) {
u.Path = path.Join(SlashSeparator, object)
break
}
}
return u.String()
}
// generates ListBucketsResponse from array of BucketInfo which can be
// serialized to match XML and JSON API spec output.
func generateListBucketsResponse(buckets []BucketInfo) ListBucketsResponse {
listbuckets := make([]Bucket, 0, len(buckets))
var data = ListBucketsResponse{}
var owner = Owner{
ID: globalMinioDefaultOwnerID,
DisplayName: "minio",
}
for _, bucket := range buckets {
var listbucket = Bucket{}
listbucket.Name = bucket.Name
listbucket.CreationDate = bucket.Created.UTC().Format(iso8601TimeFormat)
listbuckets = append(listbuckets, listbucket)
}
data.Owner = owner
data.Buckets.Buckets = listbuckets
return data
}
// generates an ListBucketVersions response for the said bucket with other enumerated options.
func generateListVersionsResponse(bucket, prefix, marker, versionIDMarker, delimiter, encodingType string, maxKeys int, resp ListObjectVersionsInfo) ListVersionsResponse {
versions := make([]ObjectVersion, 0, len(resp.Objects))
var owner = Owner{
ID: globalMinioDefaultOwnerID,
DisplayName: "minio",
}
var data = ListVersionsResponse{}
for _, object := range resp.Objects {
var content = ObjectVersion{}
if object.Name == "" {
continue
}
content.Key = s3EncodeName(object.Name, encodingType)
content.LastModified = object.ModTime.UTC().Format(iso8601TimeFormat)
if object.ETag != "" {
content.ETag = "\"" + object.ETag + "\""
}
content.Size = object.Size
if object.StorageClass != "" {
content.StorageClass = object.StorageClass
} else {
content.StorageClass = globalMinioDefaultStorageClass
}
content.Owner = owner
content.VersionID = object.VersionID
if content.VersionID == "" {
content.VersionID = nullVersionID
}
content.IsLatest = object.IsLatest
content.isDeleteMarker = object.DeleteMarker
versions = append(versions, content)
}
data.Name = bucket
data.Versions = versions
data.EncodingType = encodingType
data.Prefix = s3EncodeName(prefix, encodingType)
data.KeyMarker = s3EncodeName(marker, encodingType)
data.Delimiter = s3EncodeName(delimiter, encodingType)
data.MaxKeys = maxKeys
data.NextKeyMarker = s3EncodeName(resp.NextMarker, encodingType)
data.NextVersionIDMarker = resp.NextVersionIDMarker
data.VersionIDMarker = versionIDMarker
data.IsTruncated = resp.IsTruncated
prefixes := make([]CommonPrefix, 0, len(resp.Prefixes))
for _, prefix := range resp.Prefixes {
var prefixItem = CommonPrefix{}
prefixItem.Prefix = s3EncodeName(prefix, encodingType)
prefixes = append(prefixes, prefixItem)
}
data.CommonPrefixes = prefixes
return data
}
// generates an ListObjectsV1 response for the said bucket with other enumerated options.
func generateListObjectsV1Response(bucket, prefix, marker, delimiter, encodingType string, maxKeys int, resp ListObjectsInfo) ListObjectsResponse {
contents := make([]Object, 0, len(resp.Objects))
var owner = Owner{
ID: globalMinioDefaultOwnerID,
DisplayName: "minio",
}
var data = ListObjectsResponse{}
for _, object := range resp.Objects {
var content = Object{}
if object.Name == "" {
continue
}
content.Key = s3EncodeName(object.Name, encodingType)
content.LastModified = object.ModTime.UTC().Format(iso8601TimeFormat)
if object.ETag != "" {
content.ETag = "\"" + object.ETag + "\""
}
content.Size = object.Size
if object.StorageClass != "" {
content.StorageClass = object.StorageClass
} else {
content.StorageClass = globalMinioDefaultStorageClass
}
content.Owner = owner
contents = append(contents, content)
}
data.Name = bucket
data.Contents = contents
data.EncodingType = encodingType
data.Prefix = s3EncodeName(prefix, encodingType)
data.Marker = s3EncodeName(marker, encodingType)
data.Delimiter = s3EncodeName(delimiter, encodingType)
data.MaxKeys = maxKeys
data.NextMarker = s3EncodeName(resp.NextMarker, encodingType)
data.IsTruncated = resp.IsTruncated
prefixes := make([]CommonPrefix, 0, len(resp.Prefixes))
for _, prefix := range resp.Prefixes {
var prefixItem = CommonPrefix{}
prefixItem.Prefix = s3EncodeName(prefix, encodingType)
prefixes = append(prefixes, prefixItem)
}
data.CommonPrefixes = prefixes
return data
}
// generates an ListObjectsV2 response for the said bucket with other enumerated options.
func generateListObjectsV2Response(bucket, prefix, token, nextToken, startAfter, delimiter, encodingType string, fetchOwner, isTruncated bool, maxKeys int, objects []ObjectInfo, prefixes []string, metadata bool) ListObjectsV2Response {
contents := make([]Object, 0, len(objects))
var owner = Owner{
ID: globalMinioDefaultOwnerID,
DisplayName: "minio",
}
var data = ListObjectsV2Response{}
for _, object := range objects {
var content = Object{}
if object.Name == "" {
continue
}
content.Key = s3EncodeName(object.Name, encodingType)
content.LastModified = object.ModTime.UTC().Format(iso8601TimeFormat)
if object.ETag != "" {
content.ETag = "\"" + object.ETag + "\""
}
content.Size = object.Size
if object.StorageClass != "" {
content.StorageClass = object.StorageClass
} else {
content.StorageClass = globalMinioDefaultStorageClass
}
content.Owner = owner
if metadata {
content.UserMetadata = make(StringMap)
switch kind, _ := crypto.IsEncrypted(object.UserDefined); kind {
case crypto.S3:
content.UserMetadata[xhttp.AmzServerSideEncryption] = xhttp.AmzEncryptionAES
case crypto.S3KMS:
content.UserMetadata[xhttp.AmzServerSideEncryption] = xhttp.AmzEncryptionKMS
case crypto.SSEC:
content.UserMetadata[xhttp.AmzServerSideEncryptionCustomerAlgorithm] = xhttp.AmzEncryptionAES
}
for k, v := range CleanMinioInternalMetadataKeys(object.UserDefined) {
if strings.HasPrefix(strings.ToLower(k), ReservedMetadataPrefixLower) {
// Do not need to send any internal metadata
// values to client.
continue
}
// https://github.com/google/security-research/security/advisories/GHSA-76wf-9vgp-pj7w
if equals(k, xhttp.AmzMetaUnencryptedContentLength, xhttp.AmzMetaUnencryptedContentMD5) {
continue
}
content.UserMetadata[k] = v
}
}
contents = append(contents, content)
}
data.Name = bucket
data.Contents = contents
data.EncodingType = encodingType
data.StartAfter = s3EncodeName(startAfter, encodingType)
data.Delimiter = s3EncodeName(delimiter, encodingType)
data.Prefix = s3EncodeName(prefix, encodingType)
data.MaxKeys = maxKeys
data.ContinuationToken = base64.StdEncoding.EncodeToString([]byte(token))
data.NextContinuationToken = base64.StdEncoding.EncodeToString([]byte(nextToken))
data.IsTruncated = isTruncated
commonPrefixes := make([]CommonPrefix, 0, len(prefixes))
for _, prefix := range prefixes {
var prefixItem = CommonPrefix{}
prefixItem.Prefix = s3EncodeName(prefix, encodingType)
commonPrefixes = append(commonPrefixes, prefixItem)
}
data.CommonPrefixes = commonPrefixes
data.KeyCount = len(data.Contents) + len(data.CommonPrefixes)
return data
}
// generates CopyObjectResponse from etag and lastModified time.
func generateCopyObjectResponse(etag string, lastModified time.Time) CopyObjectResponse {
return CopyObjectResponse{
ETag: "\"" + etag + "\"",
LastModified: lastModified.UTC().Format(iso8601TimeFormat),
}
}
// generates CopyObjectPartResponse from etag and lastModified time.
func generateCopyObjectPartResponse(etag string, lastModified time.Time) CopyObjectPartResponse {
return CopyObjectPartResponse{
ETag: "\"" + etag + "\"",
LastModified: lastModified.UTC().Format(iso8601TimeFormat),
}
}
// generates InitiateMultipartUploadResponse for given bucket, key and uploadID.
func generateInitiateMultipartUploadResponse(bucket, key, uploadID string) InitiateMultipartUploadResponse {
return InitiateMultipartUploadResponse{
Bucket: bucket,
Key: key,
UploadID: uploadID,
}
}
// generates CompleteMultipartUploadResponse for given bucket, key, location and ETag.
func generateCompleteMultpartUploadResponse(bucket, key, location, etag string) CompleteMultipartUploadResponse {
return CompleteMultipartUploadResponse{
Location: location,
Bucket: bucket,
Key: key,
// AWS S3 quotes the ETag in XML, make sure we are compatible here.
ETag: "\"" + etag + "\"",
}
}
// generates ListPartsResponse from ListPartsInfo.
func generateListPartsResponse(partsInfo ListPartsInfo, encodingType string) ListPartsResponse {
listPartsResponse := ListPartsResponse{}
listPartsResponse.Bucket = partsInfo.Bucket
listPartsResponse.Key = s3EncodeName(partsInfo.Object, encodingType)
listPartsResponse.UploadID = partsInfo.UploadID
listPartsResponse.StorageClass = globalMinioDefaultStorageClass
// Dumb values not meaningful
listPartsResponse.Initiator = Initiator{
ID: globalMinioDefaultOwnerID,
DisplayName: globalMinioDefaultOwnerID,
}
listPartsResponse.Owner = Owner{
ID: globalMinioDefaultOwnerID,
DisplayName: globalMinioDefaultOwnerID,
}
listPartsResponse.MaxParts = partsInfo.MaxParts
listPartsResponse.PartNumberMarker = partsInfo.PartNumberMarker
listPartsResponse.IsTruncated = partsInfo.IsTruncated
listPartsResponse.NextPartNumberMarker = partsInfo.NextPartNumberMarker
listPartsResponse.Parts = make([]Part, len(partsInfo.Parts))
for index, part := range partsInfo.Parts {
newPart := Part{}
newPart.PartNumber = part.PartNumber
newPart.ETag = "\"" + part.ETag + "\""
newPart.Size = part.Size
newPart.LastModified = part.LastModified.UTC().Format(iso8601TimeFormat)
listPartsResponse.Parts[index] = newPart
}
return listPartsResponse
}
// generates ListMultipartUploadsResponse for given bucket and ListMultipartsInfo.
func generateListMultipartUploadsResponse(bucket string, multipartsInfo ListMultipartsInfo, encodingType string) ListMultipartUploadsResponse {
listMultipartUploadsResponse := ListMultipartUploadsResponse{}
listMultipartUploadsResponse.Bucket = bucket
listMultipartUploadsResponse.Delimiter = s3EncodeName(multipartsInfo.Delimiter, encodingType)
listMultipartUploadsResponse.IsTruncated = multipartsInfo.IsTruncated
listMultipartUploadsResponse.EncodingType = encodingType
listMultipartUploadsResponse.Prefix = s3EncodeName(multipartsInfo.Prefix, encodingType)
listMultipartUploadsResponse.KeyMarker = s3EncodeName(multipartsInfo.KeyMarker, encodingType)
listMultipartUploadsResponse.NextKeyMarker = s3EncodeName(multipartsInfo.NextKeyMarker, encodingType)
listMultipartUploadsResponse.MaxUploads = multipartsInfo.MaxUploads
listMultipartUploadsResponse.NextUploadIDMarker = multipartsInfo.NextUploadIDMarker
listMultipartUploadsResponse.UploadIDMarker = multipartsInfo.UploadIDMarker
listMultipartUploadsResponse.CommonPrefixes = make([]CommonPrefix, len(multipartsInfo.CommonPrefixes))
for index, commonPrefix := range multipartsInfo.CommonPrefixes {
listMultipartUploadsResponse.CommonPrefixes[index] = CommonPrefix{
Prefix: s3EncodeName(commonPrefix, encodingType),
}
}
listMultipartUploadsResponse.Uploads = make([]Upload, len(multipartsInfo.Uploads))
for index, upload := range multipartsInfo.Uploads {
newUpload := Upload{}
newUpload.UploadID = upload.UploadID
newUpload.Key = s3EncodeName(upload.Object, encodingType)
newUpload.Initiated = upload.Initiated.UTC().Format(iso8601TimeFormat)
listMultipartUploadsResponse.Uploads[index] = newUpload
}
return listMultipartUploadsResponse
}
// generate multi objects delete response.
func generateMultiDeleteResponse(quiet bool, deletedObjects []DeletedObject, errs []DeleteError) DeleteObjectsResponse {
deleteResp := DeleteObjectsResponse{}
if !quiet {
deleteResp.DeletedObjects = deletedObjects
}
if len(errs) == len(deletedObjects) {
deleteResp.DeletedObjects = nil
}
deleteResp.Errors = errs
return deleteResp
}
func writeResponse(w http.ResponseWriter, statusCode int, response []byte, mType mimeType) {
setCommonHeaders(w)
if mType != mimeNone {
w.Header().Set(xhttp.ContentType, string(mType))
}
w.Header().Set(xhttp.ContentLength, strconv.Itoa(len(response)))
w.WriteHeader(statusCode)
if response != nil {
w.Write(response)
w.(http.Flusher).Flush()
}
}
// mimeType represents various MIME type used API responses.
type mimeType string
const (
// Means no response type.
mimeNone mimeType = ""
// Means response type is JSON.
mimeJSON mimeType = "application/json"
// Means response type is XML.
mimeXML mimeType = "application/xml"
)
// writeSuccessResponseJSON writes success headers and response if any,
// with content-type set to `application/json`.
func writeSuccessResponseJSON(w http.ResponseWriter, response []byte) {
writeResponse(w, http.StatusOK, response, mimeJSON)
}
// writeSuccessResponseXML writes success headers and response if any,
// with content-type set to `application/xml`.
func writeSuccessResponseXML(w http.ResponseWriter, response []byte) {
writeResponse(w, http.StatusOK, response, mimeXML)
}
// writeSuccessNoContent writes success headers with http status 204
func writeSuccessNoContent(w http.ResponseWriter) {
writeResponse(w, http.StatusNoContent, nil, mimeNone)
}
// writeRedirectSeeOther writes Location header with http status 303
func writeRedirectSeeOther(w http.ResponseWriter, location string) {
w.Header().Set(xhttp.Location, location)
writeResponse(w, http.StatusSeeOther, nil, mimeNone)
}
func writeSuccessResponseHeadersOnly(w http.ResponseWriter) {
writeResponse(w, http.StatusOK, nil, mimeNone)
}
// writeErrorRespone writes error headers
func writeErrorResponse(ctx context.Context, w http.ResponseWriter, err APIError, reqURL *url.URL) {
switch err.Code {
case "SlowDown", "XMinioServerNotInitialized", "XMinioReadQuorum", "XMinioWriteQuorum":
// Set retry-after header to indicate user-agents to retry request after 120secs.
// https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Retry-After
w.Header().Set(xhttp.RetryAfter, "120")
case "InvalidRegion":
err.Description = fmt.Sprintf("Region does not match; expecting '%s'.", globalServerRegion)
case "AuthorizationHeaderMalformed":
err.Description = fmt.Sprintf("The authorization header is malformed; the region is wrong; expecting '%s'.", globalServerRegion)
}
// Generate error response.
errorResponse := getAPIErrorResponse(ctx, err, reqURL.Path,
w.Header().Get(xhttp.AmzRequestID), globalDeploymentID)
encodedErrorResponse := encodeResponse(errorResponse)
writeResponse(w, err.HTTPStatusCode, encodedErrorResponse, mimeXML)
}
func writeErrorResponseHeadersOnly(w http.ResponseWriter, err APIError) {
writeResponse(w, err.HTTPStatusCode, nil, mimeNone)
}
func writeErrorResponseString(ctx context.Context, w http.ResponseWriter, err APIError, reqURL *url.URL) {
// Generate string error response.
writeResponse(w, err.HTTPStatusCode, []byte(err.Description), mimeNone)
}
// writeErrorResponseJSON - writes error response in JSON format;
// useful for admin APIs.
func writeErrorResponseJSON(ctx context.Context, w http.ResponseWriter, err APIError, reqURL *url.URL) {
// Generate error response.
errorResponse := getAPIErrorResponse(ctx, err, reqURL.Path, w.Header().Get(xhttp.AmzRequestID), globalDeploymentID)
encodedErrorResponse := encodeResponseJSON(errorResponse)
writeResponse(w, err.HTTPStatusCode, encodedErrorResponse, mimeJSON)
}
// writeCustomErrorResponseJSON - similar to writeErrorResponseJSON,
// but accepts the error message directly (this allows messages to be
// dynamically generated.)
func writeCustomErrorResponseJSON(ctx context.Context, w http.ResponseWriter, err APIError,
errBody string, reqURL *url.URL) {
reqInfo := logger.GetReqInfo(ctx)
errorResponse := APIErrorResponse{
Code: err.Code,
Message: errBody,
Resource: reqURL.Path,
BucketName: reqInfo.BucketName,
Key: reqInfo.ObjectName,
RequestID: w.Header().Get(xhttp.AmzRequestID),
HostID: globalDeploymentID,
}
encodedErrorResponse := encodeResponseJSON(errorResponse)
writeResponse(w, err.HTTPStatusCode, encodedErrorResponse, mimeJSON)
}

108
api/minio/api-utils.go
View file

@ -1,108 +0,0 @@
// Copyright (c) 2015-2021 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package cmd
import (
"strings"
)
func shouldEscape(c byte) bool {
if 'A' <= c && c <= 'Z' || 'a' <= c && c <= 'z' || '0' <= c && c <= '9' {
return false
}
switch c {
case '-', '_', '.', '/', '*':
return false
}
return true
}
// s3URLEncode is based on Golang's url.QueryEscape() code,
// while considering some S3 exceptions:
// - Avoid encoding '/' and '*'
// - Force encoding of '~'
func s3URLEncode(s string) string {
spaceCount, hexCount := 0, 0
for i := 0; i < len(s); i++ {
c := s[i]
if shouldEscape(c) {
if c == ' ' {
spaceCount++
} else {
hexCount++
}
}
}
if spaceCount == 0 && hexCount == 0 {
return s
}
var buf [64]byte
var t []byte
required := len(s) + 2*hexCount
if required <= len(buf) {
t = buf[:required]
} else {
t = make([]byte, required)
}
if hexCount == 0 {
copy(t, s)
for i := 0; i < len(s); i++ {
if s[i] == ' ' {
t[i] = '+'
}
}
return string(t)
}
j := 0
for i := 0; i < len(s); i++ {
switch c := s[i]; {
case c == ' ':
t[j] = '+'
j++
case shouldEscape(c):
t[j] = '%'
t[j+1] = "0123456789ABCDEF"[c>>4]
t[j+2] = "0123456789ABCDEF"[c&15]
j += 3
default:
t[j] = s[i]
j++
}
}
return string(t)
}
// s3EncodeName encodes string in response when encodingType is specified in AWS S3 requests.
func s3EncodeName(name string, encodingType string) (result string) {
// Quick path to exit
if encodingType == "" {
return name
}
encodingType = strings.ToLower(encodingType)
switch encodingType {
case "url":
return s3URLEncode(name)
}
return name
}

86
api/minio/header.go
View file

@ -1,86 +0,0 @@
// Copyright (c) 2015-2021 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package crypto
import (
"bytes"
"crypto/md5"
"encoding/base64"
"net/http"
xhttp "github.com/minio/minio/internal/http"
)
// RemoveSensitiveHeaders removes confidential encryption
// information - e.g. the SSE-C key - from the HTTP headers.
// It has the same semantics as RemoveSensitiveEntires.
func RemoveSensitiveHeaders(h http.Header) {
h.Del(xhttp.AmzServerSideEncryptionCustomerKey)
h.Del(xhttp.AmzServerSideEncryptionCopyCustomerKey)
h.Del(xhttp.AmzMetaUnencryptedContentLength)
h.Del(xhttp.AmzMetaUnencryptedContentMD5)
}
var (
// SSECopy represents AWS SSE-C for copy requests. It provides
// functionality to handle SSE-C copy requests.
SSECopy = ssecCopy{}
)
type ssecCopy struct{}
// IsRequested returns true if the HTTP headers contains
// at least one SSE-C copy header. Regular SSE-C headers
// are ignored.
func (ssecCopy) IsRequested(h http.Header) bool {
if _, ok := h[xhttp.AmzServerSideEncryptionCopyCustomerAlgorithm]; ok {
return true
}
if _, ok := h[xhttp.AmzServerSideEncryptionCopyCustomerKey]; ok {
return true
}
if _, ok := h[xhttp.AmzServerSideEncryptionCopyCustomerKeyMD5]; ok {
return true
}
return false
}
// ParseHTTP parses the SSE-C copy headers and returns the SSE-C client key
// on success. Regular SSE-C headers are ignored.
func (ssecCopy) ParseHTTP(h http.Header) (key [32]byte, err error) {
if h.Get(xhttp.AmzServerSideEncryptionCopyCustomerAlgorithm) != xhttp.AmzEncryptionAES {
return key, ErrInvalidCustomerAlgorithm
}
if h.Get(xhttp.AmzServerSideEncryptionCopyCustomerKey) == "" {
return key, ErrMissingCustomerKey
}
if h.Get(xhttp.AmzServerSideEncryptionCopyCustomerKeyMD5) == "" {
return key, ErrMissingCustomerKeyMD5
}
clientKey, err := base64.StdEncoding.DecodeString(h.Get(xhttp.AmzServerSideEncryptionCopyCustomerKey))
if err != nil || len(clientKey) != 32 { // The client key must be 256 bits long
return key, ErrInvalidCustomerKey
}
keyMD5, err := base64.StdEncoding.DecodeString(h.Get(xhttp.AmzServerSideEncryptionCopyCustomerKeyMD5))
if md5Sum := md5.Sum(clientKey); err != nil || !bytes.Equal(md5Sum[:], keyMD5) {
return key, ErrCustomerKeyMD5Mismatch
}
copy(key[:], clientKey)
return key, nil
}

127
api/minio/proxy.go
View file

@ -1,127 +0,0 @@
// Copyright (c) 2015-2021 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
// Originally from https://github.com/gorilla/handlers with following license
// https://raw.githubusercontent.com/gorilla/handlers/master/LICENSE, forked
// and heavily modified for MinIO's internal needs.
package handlers
import (
"net"
"net/http"
"regexp"
"strings"
)
var (
// De-facto standard header keys.
xForwardedFor = http.CanonicalHeaderKey("X-Forwarded-For")
xForwardedHost = http.CanonicalHeaderKey("X-Forwarded-Host")
xForwardedPort = http.CanonicalHeaderKey("X-Forwarded-Port")
xForwardedProto = http.CanonicalHeaderKey("X-Forwarded-Proto")
xForwardedScheme = http.CanonicalHeaderKey("X-Forwarded-Scheme")
xRealIP = http.CanonicalHeaderKey("X-Real-IP")
)
var (
// RFC7239 defines a new "Forwarded: " header designed to replace the
// existing use of X-Forwarded-* headers.
// e.g. Forwarded: for=192.0.2.60;proto=https;by=203.0.113.43
forwarded = http.CanonicalHeaderKey("Forwarded")
// Allows for a sub-match of the first value after 'for=' to the next
// comma, semi-colon or space. The match is case-insensitive.
forRegex = regexp.MustCompile(`(?i)(?:for=)([^(;|,| )]+)(.*)`)
// Allows for a sub-match for the first instance of scheme (http|https)
// prefixed by 'proto='. The match is case-insensitive.
protoRegex = regexp.MustCompile(`(?i)^(;|,| )+(?:proto=)(https|http)`)
)
// GetSourceScheme retrieves the scheme from the X-Forwarded-Proto and RFC7239
// Forwarded headers (in that order).
func GetSourceScheme(r *http.Request) string {
var scheme string
// Retrieve the scheme from X-Forwarded-Proto.
if proto := r.Header.Get(xForwardedProto); proto != "" {
scheme = strings.ToLower(proto)
} else if proto = r.Header.Get(xForwardedScheme); proto != "" {
scheme = strings.ToLower(proto)
} else if proto := r.Header.Get(forwarded); proto != "" {
// match should contain at least two elements if the protocol was
// specified in the Forwarded header. The first element will always be
// the 'for=', which we ignore, subsequently we proceed to look for
// 'proto=' which should precede right after `for=` if not
// we simply ignore the values and return empty. This is in line
// with the approach we took for returning first ip from multiple
// params.
if match := forRegex.FindStringSubmatch(proto); len(match) > 1 {
if match = protoRegex.FindStringSubmatch(match[2]); len(match) > 1 {
scheme = strings.ToLower(match[2])
}
}
}
return scheme
}
// GetSourceIPFromHeaders retrieves the IP from the X-Forwarded-For, X-Real-IP
// and RFC7239 Forwarded headers (in that order)
func GetSourceIPFromHeaders(r *http.Request) string {
var addr string
if fwd := r.Header.Get(xForwardedFor); fwd != "" {
// Only grab the first (client) address. Note that '192.168.0.1,
// 10.1.1.1' is a valid key for X-Forwarded-For where addresses after
// the first may represent forwarding proxies earlier in the chain.
s := strings.Index(fwd, ", ")
if s == -1 {
s = len(fwd)
}
addr = fwd[:s]
} else if fwd := r.Header.Get(xRealIP); fwd != "" {
// X-Real-IP should only contain one IP address (the client making the
// request).
addr = fwd
} else if fwd := r.Header.Get(forwarded); fwd != "" {
// match should contain at least two elements if the protocol was
// specified in the Forwarded header. The first element will always be
// the 'for=' capture, which we ignore. In the case of multiple IP
// addresses (for=8.8.8.8, 8.8.4.4, 172.16.1.20 is valid) we only
// extract the first, which should be the client IP.
if match := forRegex.FindStringSubmatch(fwd); len(match) > 1 {
// IPv6 addresses in Forwarded headers are quoted-strings. We strip
// these quotes.
addr = strings.Trim(match[1], `"`)
}
}
return addr
}
// GetSourceIP retrieves the IP from the request headers
// and falls back to r.RemoteAddr when necessary.
func GetSourceIP(r *http.Request) string {
addr := GetSourceIPFromHeaders(r)
if addr != "" {
return addr
}
// Default to remote address if headers not set.
addr, _, _ = net.SplitHostPort(r.RemoteAddr)
return addr
}

144
api/minio/reqinfo.go
View file

@ -1,144 +0,0 @@
// Copyright (c) 2015-2021 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package logger
import (
"context"
"fmt"
"sync"
)
// Key used for Get/SetReqInfo
type contextKeyType string
const contextLogKey = contextKeyType("miniolog")
// KeyVal - appended to ReqInfo.Tags
type KeyVal struct {
Key string
Val interface{}
}
// ReqInfo stores the request info.
type ReqInfo struct {
RemoteHost string // Client Host/IP
Host string // Node Host/IP
UserAgent string // User Agent
DeploymentID string // x-minio-deployment-id
RequestID string // x-amz-request-id
API string // API name - GetObject PutObject NewMultipartUpload etc.
BucketName string // Bucket name
ObjectName string // Object name
AccessKey string // Access Key
tags []KeyVal // Any additional info not accommodated by above fields
sync.RWMutex
}
// NewReqInfo :
func NewReqInfo(remoteHost, userAgent, deploymentID, requestID, api, bucket, object string) *ReqInfo {
req := ReqInfo{}
req.RemoteHost = remoteHost
req.UserAgent = userAgent
req.API = api
req.DeploymentID = deploymentID
req.RequestID = requestID
req.BucketName = bucket
req.ObjectName = object
return &req
}
// AppendTags - appends key/val to ReqInfo.tags
func (r *ReqInfo) AppendTags(key string, val interface{}) *ReqInfo {
if r == nil {
return nil
}
r.Lock()
defer r.Unlock()
r.tags = append(r.tags, KeyVal{key, val})
return r
}
// SetTags - sets key/val to ReqInfo.tags
func (r *ReqInfo) SetTags(key string, val interface{}) *ReqInfo {
if r == nil {
return nil
}
r.Lock()
defer r.Unlock()
// Search of tag key already exists in tags
var updated bool
for _, tag := range r.tags {
if tag.Key == key {
tag.Val = val
updated = true
break
}
}
if !updated {
// Append to the end of tags list
r.tags = append(r.tags, KeyVal{key, val})
}
return r
}
// GetTags - returns the user defined tags
func (r *ReqInfo) GetTags() []KeyVal {
if r == nil {
return nil
}
r.RLock()
defer r.RUnlock()
return append([]KeyVal(nil), r.tags...)
}
// GetTagsMap - returns the user defined tags in a map structure
func (r *ReqInfo) GetTagsMap() map[string]interface{} {
if r == nil {
return nil
}
r.RLock()
defer r.RUnlock()
m := make(map[string]interface{}, len(r.tags))
for _, t := range r.tags {
m[t.Key] = t.Val
}
return m
}
// SetReqInfo sets ReqInfo in the context.
func SetReqInfo(ctx context.Context, req *ReqInfo) context.Context {
if ctx == nil {
LogIf(context.Background(), fmt.Errorf("context is nil"))
return nil
}
return context.WithValue(ctx, contextLogKey, req)
}
// GetReqInfo returns ReqInfo if set.
func GetReqInfo(ctx context.Context) *ReqInfo {
if ctx != nil {
r, ok := ctx.Value(contextLogKey).(*ReqInfo)
if ok {
return r
}
r = &ReqInfo{}
SetReqInfo(ctx, r)
return r
}
return nil
}

189
api/reqinfo.go
View file

@ -1,6 +1,39 @@
package api package api
import (
"context"
"net"
"net/http"
"net/url"
"regexp"
"strings"
"sync"
"github.com/gorilla/mux"
)
type ( type (
// KeyVal - appended to ReqInfo.Tags.
KeyVal struct {
Key string
Val string
}
// ReqInfo stores the request info.
ReqInfo struct {
sync.RWMutex
RemoteHost string // Client Host/IP
Host string // Node Host/IP
UserAgent string // User Agent
DeploymentID string // x-minio-deployment-id
RequestID string // x-amz-request-id
API string // API name - GetObject PutObject NewMultipartUpload etc.
BucketName string // Bucket name
ObjectName string // Object name
URL *url.URL // Request url
tags []KeyVal // Any additional info not accommodated by above fields
}
// ObjectRequest represents object request data. // ObjectRequest represents object request data.
ObjectRequest struct { ObjectRequest struct {
Bucket string Bucket string
@ -13,3 +46,159 @@ type (
type contextKeyType string type contextKeyType string
const ctxRequestInfo = contextKeyType("NeoFS-S3-GW") const ctxRequestInfo = contextKeyType("NeoFS-S3-GW")
var (
// De-facto standard header keys.
xForwardedFor = http.CanonicalHeaderKey("X-Forwarded-For")
xRealIP = http.CanonicalHeaderKey("X-Real-IP")
)
var (
// RFC7239 defines a new "Forwarded: " header designed to replace the
// existing use of X-Forwarded-* headers.
// e.g. Forwarded: for=192.0.2.60;proto=https;by=203.0.113.43.
forwarded = http.CanonicalHeaderKey("Forwarded")
// Allows for a sub-match of the first value after 'for=' to the next
// comma, semi-colon or space. The match is case-insensitive.
forRegex = regexp.MustCompile(`(?i)(?:for=)([^(;|, )]+)(.*)`)
)
// GetSourceIP retrieves the IP from the X-Forwarded-For, X-Real-IP and RFC7239
// Forwarded headers (in that order), falls back to r.RemoteAddr when all
// else fails.
func GetSourceIP(r *http.Request) string {
var addr string
if fwd := r.Header.Get(xForwardedFor); fwd != "" {
// Only grab the first (client) address. Note that '192.168.0.1,
// 10.1.1.1' is a valid key for X-Forwarded-For where addresses after
// the first may represent forwarding proxies earlier in the chain.
s := strings.Index(fwd, ", ")
if s == -1 {
s = len(fwd)
}
addr = fwd[:s]
} else if fwd := r.Header.Get(xRealIP); fwd != "" {
// X-Real-IP should only contain one IP address (the client making the
// request).
addr = fwd
} else if fwd := r.Header.Get(forwarded); fwd != "" {
// match should contain at least two elements if the protocol was
// specified in the Forwarded header. The first element will always be
// the 'for=' capture, which we ignore. In the case of multiple IP
// addresses (for=8.8.8.8, 8.8.4.4, 172.16.1.20 is valid) we only
// extract the first, which should be the client IP.
if match := forRegex.FindStringSubmatch(fwd); len(match) > 1 {
// IPv6 addresses in Forwarded headers are quoted-strings. We strip
// these quotes.
addr = strings.Trim(match[1], `"`)
}
}
if addr != "" {
return addr
}
// Default to remote address if headers not set.
addr, _, _ = net.SplitHostPort(r.RemoteAddr)
return addr
}
func prepareContext(w http.ResponseWriter, r *http.Request) context.Context {
vars := mux.Vars(r)
bucket := vars["bucket"]
object, err := url.PathUnescape(vars["object"])
if err != nil {
object = vars["object"]
}
prefix, err := url.QueryUnescape(vars["prefix"])
if err != nil {
prefix = vars["prefix"]
}
if prefix != "" {
object = prefix
}
return SetReqInfo(r.Context(),
// prepare request info
NewReqInfo(w, r, ObjectRequest{
Bucket: bucket,
Object: object,
Method: mux.CurrentRoute(r).GetName(),
}))
}
// NewReqInfo returns new ReqInfo based on parameters.
func NewReqInfo(w http.ResponseWriter, r *http.Request, req ObjectRequest) *ReqInfo {
return &ReqInfo{
API: req.Method,
BucketName: req.Bucket,
ObjectName: req.Object,
UserAgent: r.UserAgent(),
RemoteHost: GetSourceIP(r),
RequestID: GetRequestID(w),
DeploymentID: deploymentID.String(),
URL: r.URL,
}
}
// AppendTags - appends key/val to ReqInfo.tags.
func (r *ReqInfo) AppendTags(key string, val string) *ReqInfo {
if r == nil {
return nil
}
r.Lock()
defer r.Unlock()
r.tags = append(r.tags, KeyVal{key, val})
return r
}
// SetTags - sets key/val to ReqInfo.tags.
func (r *ReqInfo) SetTags(key string, val string) *ReqInfo {
if r == nil {
return nil
}
r.Lock()
defer r.Unlock()
// Search of tag key already exists in tags
var updated bool
for _, tag := range r.tags {
if tag.Key == key {
tag.Val = val
updated = true
break
}
}
if !updated {
// Append to the end of tags list
r.tags = append(r.tags, KeyVal{key, val})
}
return r
}
// GetTags - returns the user defined tags.
func (r *ReqInfo) GetTags() []KeyVal {
if r == nil {
return nil
}
r.RLock()
defer r.RUnlock()
return append([]KeyVal(nil), r.tags...)
}
// SetReqInfo sets ReqInfo in the context.
func SetReqInfo(ctx context.Context, req *ReqInfo) context.Context {
if ctx == nil {
return nil
}
return context.WithValue(ctx, ctxRequestInfo, req)
}
// GetReqInfo returns ReqInfo if set.
func GetReqInfo(ctx context.Context) *ReqInfo {
if ctx == nil {
return &ReqInfo{}
} else if r, ok := ctx.Value(ctxRequestInfo).(*ReqInfo); ok {
return r
}
return &ReqInfo{}
}

107
api/response.go
View file

@ -1,11 +1,15 @@
package api package api
import ( import (
"bytes"
"encoding/xml" "encoding/xml"
"fmt" "fmt"
"net/http"
"strconv"
"github.com/google/uuid" "github.com/google/uuid"
"github.com/nspcc-dev/neofs-s3-gw/api/errors" "github.com/nspcc-dev/neofs-s3-gw/api/errors"
"github.com/nspcc-dev/neofs-s3-gw/internal/version"
) )
type ( type (
@ -105,6 +109,109 @@ var s3ErrorResponseMap = map[string]string{
// Add new API errors here. // Add new API errors here.
} }
// WriteErrorResponse writes error headers.
func WriteErrorResponse(w http.ResponseWriter, reqInfo *ReqInfo, err error) {
code := http.StatusInternalServerError
if e, ok := err.(errors.Error); ok {
code = e.HTTPStatusCode
switch e.Code {
case "SlowDown", "XNeoFSServerNotInitialized", "XNeoFSReadQuorum", "XNeoFSWriteQuorum":
// Set retry-after header to indicate user-agents to retry request after 120secs.
// https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Retry-After
w.Header().Set(hdrRetryAfter, "120")
case "AccessDenied":
// TODO process when the request is from browser and also if browser
}
}
// Generate error response.
errorResponse := getAPIErrorResponse(reqInfo, err)
encodedErrorResponse := EncodeResponse(errorResponse)
WriteResponse(w, code, encodedErrorResponse, MimeXML)
}
// If none of the http routes match respond with appropriate errors.
func errorResponseHandler(w http.ResponseWriter, r *http.Request) {
desc := fmt.Sprintf("Unknown API request at %s", r.URL.Path)
WriteErrorResponse(w, GetReqInfo(r.Context()), errors.Error{
Code: "XMinioUnknownAPIRequest",
Description: desc,
HTTPStatusCode: http.StatusBadRequest,
})
}
// Write http common headers.
func setCommonHeaders(w http.ResponseWriter) {
w.Header().Set(hdrServerInfo, version.Server)
w.Header().Set(hdrAcceptRanges, "bytes")
// Remove sensitive information
removeSensitiveHeaders(w.Header())
}
// removeSensitiveHeaders removes confidential encryption
// information - e.g. the SSE-C key - from the HTTP headers.
// It has the same semantics as RemoveSensitiveEntries.
func removeSensitiveHeaders(h http.Header) {
h.Del(hdrSSECustomerKey)
h.Del(hdrSSECopyKey)
}
// WriteResponse writes given statusCode and response into w (with mType header if set).
func WriteResponse(w http.ResponseWriter, statusCode int, response []byte, mType mimeType) {
setCommonHeaders(w)
if mType != MimeNone {
w.Header().Set(hdrContentType, string(mType))
}
w.Header().Set(hdrContentLength, strconv.Itoa(len(response)))
w.WriteHeader(statusCode)
if response == nil {
return
}
_, _ = w.Write(response)
if flusher, ok := w.(http.Flusher); ok {
flusher.Flush()
}
}
// EncodeResponse encodes the response headers into XML format.
func EncodeResponse(response interface{}) []byte {
var bytesBuffer bytes.Buffer
bytesBuffer.WriteString(xml.Header)
_ = xml.
NewEncoder(&bytesBuffer).
Encode(response)
return bytesBuffer.Bytes()
}
// EncodeToResponse encodes the response into ResponseWriter.
func EncodeToResponse(w http.ResponseWriter, response interface{}) error {
w.WriteHeader(http.StatusOK)
if _, err := w.Write(xmlHeader); err != nil {
return err
} else if err = xml.NewEncoder(w).Encode(response); err != nil {
return err
}
return nil
}
// // WriteSuccessResponseXML writes success headers and response if any,
// // with content-type set to `application/xml`.
// func WriteSuccessResponseXML(w http.ResponseWriter, response []byte) {
// WriteResponse(w, http.StatusOK, response, MimeXML)
// }
// WriteSuccessResponseHeadersOnly writes HTTP (200) OK response with no data
// to the client.
func WriteSuccessResponseHeadersOnly(w http.ResponseWriter) {
WriteResponse(w, http.StatusOK, nil, MimeNone)
}
// Error - Returns S3 error string. // Error - Returns S3 error string.
func (e ErrorResponse) Error() string { func (e ErrorResponse) Error() string {
if e.Message == "" { if e.Message == "" {