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[#264] Remove minio code distributed with Apache 2.0 license

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NeoFS S3 Gate based on Minio RELEASE.2020-07-02T00-15-09Z
code which distributed with Apache 2.0 license. This commit
removes remaining minio code with that license.

Signed-off-by: Alex Vanin <alexey@nspcc.ru>
This commit is contained in:
Alex Vanin 2021-09-15 12:08:46 +03:00 committed by Alex Vanin
parent 8f3c9c5783
commit 5d11d8f556
4 changed files with 0 additions and 2322 deletions
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1916
api/errors/errors.go
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File diff suppressed because it is too large Load diff

110
api/handler/s3encoder.go
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@ -1,111 +1 @@
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
}

189
api/reqinfo.go
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@ -1,39 +1,6 @@
package api
import (
"context"
"net"
"net/http"
"net/url"
"regexp"
"strings"
"sync"
"github.com/gorilla/mux"
)
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 struct {
Bucket string
@ -46,159 +13,3 @@ type (
type contextKeyType string
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
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@ -1,15 +1,11 @@
package api
import (
"bytes"
"encoding/xml"
"fmt"
"net/http"
"strconv"
"github.com/google/uuid"
"github.com/nspcc-dev/neofs-s3-gw/api/errors"
"github.com/nspcc-dev/neofs-s3-gw/internal/version"
)
type (
@ -109,109 +105,6 @@ var s3ErrorResponseMap = map[string]string{
// 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.
func (e ErrorResponse) Error() string {
if e.Message == "" {