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// 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 (
"net"
"net/http"
consoleapi "github.com/minio/console/api"
xhttp "github.com/minio/minio/internal/http"
"github.com/minio/mux"
"github.com/minio/pkg/v2/wildcard"
"github.com/rs/cors"
)
func newHTTPServerFn() *xhttp.Server {
globalObjLayerMutex.RLock()
defer globalObjLayerMutex.RUnlock()
return globalHTTPServer
}
func setHTTPServer(h *xhttp.Server) {
globalObjLayerMutex.Lock()
globalHTTPServer = h
globalObjLayerMutex.Unlock()
}
func newConsoleServerFn() *consoleapi.Server {
globalObjLayerMutex.RLock()
defer globalObjLayerMutex.RUnlock()
return globalConsoleSrv
}
func setConsoleSrv(srv *consoleapi.Server) {
globalObjLayerMutex.Lock()
globalConsoleSrv = srv
globalObjLayerMutex.Unlock()
}
func newObjectLayerFn() ObjectLayer {
globalObjLayerMutex.RLock()
defer globalObjLayerMutex.RUnlock()
return globalObjectAPI
}
func setObjectLayer(o ObjectLayer) {
globalObjLayerMutex.Lock()
globalObjectAPI = o
globalObjLayerMutex.Unlock()
}
// objectAPIHandler implements and provides http handlers for S3 API.
type objectAPIHandlers struct {
ObjectAPI func() ObjectLayer
}
// getHost tries its best to return the request host.
// According to section 14.23 of RFC 2616 the Host header
// can include the port number if the default value of 80 is not used.
func getHost(r *http.Request) string {
if r.URL.IsAbs() {
return r.URL.Host
}
return r.Host
}
func notImplementedHandler(w http.ResponseWriter, r *http.Request) {
writeErrorResponse(r.Context(), w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL)
}
type rejectedAPI struct {
api string
methods []string
queries []string
path string
}
var rejectedObjAPIs = []rejectedAPI{
{
api: "torrent",
methods: []string{http.MethodPut, http.MethodDelete, http.MethodGet},
queries: []string{"torrent", ""},
path: "/{object:.+}",
},
{
api: "acl",
methods: []string{http.MethodDelete},
queries: []string{"acl", ""},
path: "/{object:.+}",
},
}
var rejectedBucketAPIs = []rejectedAPI{
{
api: "inventory",
methods: []string{http.MethodGet, http.MethodPut, http.MethodDelete},
queries: []string{"inventory", ""},
},
{
api: "cors",
methods: []string{http.MethodPut, http.MethodDelete},
queries: []string{"cors", ""},
},
{
api: "metrics",
methods: []string{http.MethodGet, http.MethodPut, http.MethodDelete},
queries: []string{"metrics", ""},
},
{
api: "website",
methods: []string{http.MethodPut},
queries: []string{"website", ""},
},
{
api: "logging",
methods: []string{http.MethodPut, http.MethodDelete},
queries: []string{"logging", ""},
},
{
api: "accelerate",
methods: []string{http.MethodPut, http.MethodDelete},
queries: []string{"accelerate", ""},
},
{
api: "requestPayment",
methods: []string{http.MethodPut, http.MethodDelete},
queries: []string{"requestPayment", ""},
},
{
api: "acl",
methods: []string{http.MethodDelete, http.MethodPut, http.MethodHead},
queries: []string{"acl", ""},
},
{
api: "publicAccessBlock",
methods: []string{http.MethodDelete, http.MethodPut, http.MethodGet},
queries: []string{"publicAccessBlock", ""},
},
{
api: "ownershipControls",
methods: []string{http.MethodDelete, http.MethodPut, http.MethodGet},
queries: []string{"ownershipControls", ""},
},
{
api: "intelligent-tiering",
methods: []string{http.MethodDelete, http.MethodPut, http.MethodGet},
queries: []string{"intelligent-tiering", ""},
},
{
api: "analytics",
methods: []string{http.MethodDelete, http.MethodPut, http.MethodGet},
queries: []string{"analytics", ""},
},
}
// Set of s3 handler options as bit flags.
type s3HFlag uint8
const (
// when provided, disables Gzip compression.
noGZS3HFlag = 1 << iota
// when provided, enables only tracing of headers. Otherwise, both headers
// and body are traced.
traceHdrsS3HFlag
// when provided, disables throttling via the `maxClients` middleware.
noThrottleS3HFlag
)
func (h s3HFlag) has(flag s3HFlag) bool {
// Use bitwise-AND and check if the result is non-zero.
return h&flag != 0
}
// s3APIMiddleware - performs some common handler functionality for S3 API
// handlers.
//
// It is set per-"handler function registration" in the router to allow for
// behavior modification via flags.
//
// This middleware always calls `collectAPIStats` to collect API stats.
//
// The passed in handler function must be a method of `objectAPIHandlers` for
// the name displayed in logs and trace to be accurate. The name is extracted
// via reflection.
//
// When **no** flags are passed, the behavior is to trace both headers and body,
// gzip the response and throttle the handler via `maxClients`. Each of these
// can be disabled via the corresponding `s3HFlag`.
//
// CAUTION: for requests involving large req/resp bodies ensure to pass the
// `traceHdrsS3HFlag`, otherwise both headers and body will be traced, causing
// high memory usage!
func s3APIMiddleware(f http.HandlerFunc, flags ...s3HFlag) http.HandlerFunc {
// Collect all flags with bitwise-OR and assign operator
var handlerFlags s3HFlag
for _, flag := range flags {
handlerFlags |= flag
}
// Get name of the handler using reflection.
handlerName := getHandlerName(f, "objectAPIHandlers")
var handler http.HandlerFunc = func(w http.ResponseWriter, r *http.Request) {
// Wrap the actual handler with the appropriate tracing middleware.
var tracedHandler http.HandlerFunc
if handlerFlags.has(traceHdrsS3HFlag) {
tracedHandler = httpTraceHdrs(f)
} else {
tracedHandler = httpTraceAll(f)
}
// Skip wrapping with the gzip middleware if specified.
var gzippedHandler http.HandlerFunc = tracedHandler
if !handlerFlags.has(noGZS3HFlag) {
gzippedHandler = gzipHandler(gzippedHandler)
}
// Skip wrapping with throttling middleware if specified.
var throttledHandler http.HandlerFunc = gzippedHandler
if !handlerFlags.has(noThrottleS3HFlag) {
throttledHandler = maxClients(throttledHandler)
}
// Collect API stats using the API name got from reflection in
// `getHandlerName`.
statsCollectedHandler := collectAPIStats(handlerName, throttledHandler)
// Call the final handler.
statsCollectedHandler(w, r)
}
return handler
}
// registerAPIRouter - registers S3 compatible APIs.
func registerAPIRouter(router *mux.Router) {
// Initialize API.
api := objectAPIHandlers{
ObjectAPI: newObjectLayerFn,
}
// API Router
apiRouter := router.PathPrefix(SlashSeparator).Subrouter()
var routers []*mux.Router
for _, domainName := range globalDomainNames {
if IsKubernetes() {
routers = append(routers, apiRouter.MatcherFunc(func(r *http.Request, match *mux.RouteMatch) bool {
host, _, err := net.SplitHostPort(getHost(r))
if err != nil {
host = r.Host
}
// Make sure to skip matching minio.<domain>` this is
// specifically meant for operator/k8s deployment
// The reason we need to skip this is for a special
// usecase where we need to make sure that
// minio.<namespace>.svc.<cluster_domain> is ignored
// by the bucketDNS style to ensure that path style
// is available and honored at this domain.
//
// All other `<bucket>.<namespace>.svc.<cluster_domain>`
// makes sure that buckets are routed through this matcher
// to match for `<bucket>`
return host != minioReservedBucket+"."+domainName
}).Host("{bucket:.+}."+domainName).Subrouter())
} else {
routers = append(routers, apiRouter.Host("{bucket:.+}."+domainName).Subrouter())
}
}
routers = append(routers, apiRouter.PathPrefix("/{bucket}").Subrouter())
for _, router := range routers {
// Register all rejected object APIs
for _, r := range rejectedObjAPIs {
t := router.Methods(r.methods...).
HandlerFunc(collectAPIStats(r.api, httpTraceAll(notImplementedHandler))).
Queries(r.queries...)
t.Path(r.path)
}
// Object operations
// HeadObject
router.Methods(http.MethodHead).Path("/{object:.+}").
HandlerFunc(s3APIMiddleware(api.HeadObjectHandler))
// GetObjectAttributes
router.Methods(http.MethodGet).Path("/{object:.+}").
HandlerFunc(s3APIMiddleware(api.GetObjectAttributesHandler, traceHdrsS3HFlag)).
Queries("attributes", "")
// CopyObjectPart
router.Methods(http.MethodPut).Path("/{object:.+}").
HeadersRegexp(xhttp.AmzCopySource, ".*?(\\/|%2F).*?").
HandlerFunc(s3APIMiddleware(api.CopyObjectPartHandler)).
Queries("partNumber", "{partNumber:.*}", "uploadId", "{uploadId:.*}")
// PutObjectPart
router.Methods(http.MethodPut).Path("/{object:.+}").
HandlerFunc(s3APIMiddleware(api.PutObjectPartHandler, traceHdrsS3HFlag)).
Queries("partNumber", "{partNumber:.*}", "uploadId", "{uploadId:.*}")
// ListObjectParts
router.Methods(http.MethodGet).Path("/{object:.+}").
HandlerFunc(s3APIMiddleware(api.ListObjectPartsHandler)).
Queries("uploadId", "{uploadId:.*}")
// CompleteMultipartUpload
router.Methods(http.MethodPost).Path("/{object:.+}").
HandlerFunc(s3APIMiddleware(api.CompleteMultipartUploadHandler)).
Queries("uploadId", "{uploadId:.*}")
// NewMultipartUpload
router.Methods(http.MethodPost).Path("/{object:.+}").
HandlerFunc(s3APIMiddleware(api.NewMultipartUploadHandler)).
Queries("uploads", "")
// AbortMultipartUpload
router.Methods(http.MethodDelete).Path("/{object:.+}").
HandlerFunc(s3APIMiddleware(api.AbortMultipartUploadHandler)).
Queries("uploadId", "{uploadId:.*}")
// GetObjectACL - this is a dummy call.
router.Methods(http.MethodGet).Path("/{object:.+}").
HandlerFunc(s3APIMiddleware(api.GetObjectACLHandler, traceHdrsS3HFlag)).
Queries("acl", "")
// PutObjectACL - this is a dummy call.
router.Methods(http.MethodPut).Path("/{object:.+}").
HandlerFunc(s3APIMiddleware(api.PutObjectACLHandler, traceHdrsS3HFlag)).
Queries("acl", "")
// GetObjectTagging
router.Methods(http.MethodGet).Path("/{object:.+}").
HandlerFunc(s3APIMiddleware(api.GetObjectTaggingHandler, traceHdrsS3HFlag)).
Queries("tagging", "")
// PutObjectTagging
router.Methods(http.MethodPut).Path("/{object:.+}").
HandlerFunc(s3APIMiddleware(api.PutObjectTaggingHandler, traceHdrsS3HFlag)).
Queries("tagging", "")
// DeleteObjectTagging
router.Methods(http.MethodDelete).Path("/{object:.+}").
HandlerFunc(s3APIMiddleware(api.DeleteObjectTaggingHandler, traceHdrsS3HFlag)).
Queries("tagging", "")
// SelectObjectContent
router.Methods(http.MethodPost).Path("/{object:.+}").
HandlerFunc(s3APIMiddleware(api.SelectObjectContentHandler, traceHdrsS3HFlag)).
Queries("select", "").Queries("select-type", "2")
// GetObjectRetention
router.Methods(http.MethodGet).Path("/{object:.+}").
HandlerFunc(s3APIMiddleware(api.GetObjectRetentionHandler)).
Queries("retention", "")
// GetObjectLegalHold
router.Methods(http.MethodGet).Path("/{object:.+}").
HandlerFunc(s3APIMiddleware(api.GetObjectLegalHoldHandler)).
Queries("legal-hold", "")
// GetObject with lambda ARNs
router.Methods(http.MethodGet).Path("/{object:.+}").
HandlerFunc(s3APIMiddleware(api.GetObjectLambdaHandler, traceHdrsS3HFlag)).
Queries("lambdaArn", "{lambdaArn:.*}")
// GetObject
router.Methods(http.MethodGet).Path("/{object:.+}").
HandlerFunc(s3APIMiddleware(api.GetObjectHandler, traceHdrsS3HFlag))
// CopyObject
router.Methods(http.MethodPut).Path("/{object:.+}").
HeadersRegexp(xhttp.AmzCopySource, ".*?(\\/|%2F).*?").
HandlerFunc(s3APIMiddleware(api.CopyObjectHandler))
// PutObjectRetention
router.Methods(http.MethodPut).Path("/{object:.+}").
HandlerFunc(s3APIMiddleware(api.PutObjectRetentionHandler)).
Queries("retention", "")
// PutObjectLegalHold
router.Methods(http.MethodPut).Path("/{object:.+}").
HandlerFunc(s3APIMiddleware(api.PutObjectLegalHoldHandler)).
Queries("legal-hold", "")
// PutObject with auto-extract support for zip
router.Methods(http.MethodPut).Path("/{object:.+}").
HeadersRegexp(xhttp.AmzSnowballExtract, "true").
HandlerFunc(s3APIMiddleware(api.PutObjectExtractHandler, traceHdrsS3HFlag))
// PutObject
router.Methods(http.MethodPut).Path("/{object:.+}").
HandlerFunc(s3APIMiddleware(api.PutObjectHandler, traceHdrsS3HFlag))
// DeleteObject
router.Methods(http.MethodDelete).Path("/{object:.+}").
HandlerFunc(s3APIMiddleware(api.DeleteObjectHandler))
// PostRestoreObject
router.Methods(http.MethodPost).Path("/{object:.+}").
HandlerFunc(s3APIMiddleware(api.PostRestoreObjectHandler)).
Queries("restore", "")
// Bucket operations
// GetBucketLocation
router.Methods(http.MethodGet).
HandlerFunc(s3APIMiddleware(api.GetBucketLocationHandler)).
Queries("location", "")
// GetBucketPolicy
router.Methods(http.MethodGet).
HandlerFunc(s3APIMiddleware(api.GetBucketPolicyHandler)).
Queries("policy", "")
// GetBucketLifecycle
router.Methods(http.MethodGet).
HandlerFunc(s3APIMiddleware(api.GetBucketLifecycleHandler)).
Queries("lifecycle", "")
// GetBucketEncryption
router.Methods(http.MethodGet).
HandlerFunc(s3APIMiddleware(api.GetBucketEncryptionHandler)).
Queries("encryption", "")
// GetBucketObjectLockConfig
router.Methods(http.MethodGet).
HandlerFunc(s3APIMiddleware(api.GetBucketObjectLockConfigHandler)).
Queries("object-lock", "")
// GetBucketReplicationConfig
router.Methods(http.MethodGet).
HandlerFunc(s3APIMiddleware(api.GetBucketReplicationConfigHandler)).
Queries("replication", "")
// GetBucketVersioning
router.Methods(http.MethodGet).
HandlerFunc(s3APIMiddleware(api.GetBucketVersioningHandler)).
Queries("versioning", "")
// GetBucketNotification
router.Methods(http.MethodGet).
HandlerFunc(s3APIMiddleware(api.GetBucketNotificationHandler)).
Queries("notification", "")
// ListenNotification
router.Methods(http.MethodGet).
HandlerFunc(s3APIMiddleware(api.ListenNotificationHandler, noThrottleS3HFlag)).
Queries("events", "{events:.*}")
// ResetBucketReplicationStatus - MinIO extension API
router.Methods(http.MethodGet).
HandlerFunc(s3APIMiddleware(api.ResetBucketReplicationStatusHandler)).
Queries("replication-reset-status", "")
// Dummy Bucket Calls
// GetBucketACL -- this is a dummy call.
router.Methods(http.MethodGet).
HandlerFunc(s3APIMiddleware(api.GetBucketACLHandler)).
Queries("acl", "")
// PutBucketACL -- this is a dummy call.
router.Methods(http.MethodPut).
HandlerFunc(s3APIMiddleware(api.PutBucketACLHandler)).
Queries("acl", "")
// GetBucketCors - this is a dummy call.
router.Methods(http.MethodGet).
HandlerFunc(s3APIMiddleware(api.GetBucketCorsHandler)).
Queries("cors", "")
// GetBucketWebsiteHandler - this is a dummy call.
router.Methods(http.MethodGet).
HandlerFunc(s3APIMiddleware(api.GetBucketWebsiteHandler)).
Queries("website", "")
// GetBucketAccelerateHandler - this is a dummy call.
router.Methods(http.MethodGet).
HandlerFunc(s3APIMiddleware(api.GetBucketAccelerateHandler)).
Queries("accelerate", "")
// GetBucketRequestPaymentHandler - this is a dummy call.
router.Methods(http.MethodGet).
HandlerFunc(s3APIMiddleware(api.GetBucketRequestPaymentHandler)).
Queries("requestPayment", "")
// GetBucketLoggingHandler - this is a dummy call.
router.Methods(http.MethodGet).
HandlerFunc(s3APIMiddleware(api.GetBucketLoggingHandler)).
Queries("logging", "")
// GetBucketTaggingHandler
router.Methods(http.MethodGet).
HandlerFunc(s3APIMiddleware(api.GetBucketTaggingHandler)).
Queries("tagging", "")
// DeleteBucketWebsiteHandler
router.Methods(http.MethodDelete).
HandlerFunc(s3APIMiddleware(api.DeleteBucketWebsiteHandler)).
Queries("website", "")
// DeleteBucketTaggingHandler
router.Methods(http.MethodDelete).
HandlerFunc(s3APIMiddleware(api.DeleteBucketTaggingHandler)).
Queries("tagging", "")
// ListMultipartUploads
router.Methods(http.MethodGet).
HandlerFunc(s3APIMiddleware(api.ListMultipartUploadsHandler)).
Queries("uploads", "")
// ListObjectsV2M
router.Methods(http.MethodGet).
HandlerFunc(s3APIMiddleware(api.ListObjectsV2MHandler)).
Queries("list-type", "2", "metadata", "true")
// ListObjectsV2
router.Methods(http.MethodGet).
HandlerFunc(s3APIMiddleware(api.ListObjectsV2Handler)).
Queries("list-type", "2")
// ListObjectVersions
router.Methods(http.MethodGet).
HandlerFunc(s3APIMiddleware(api.ListObjectVersionsMHandler)).
Queries("versions", "", "metadata", "true")
// ListObjectVersions
router.Methods(http.MethodGet).
HandlerFunc(s3APIMiddleware(api.ListObjectVersionsHandler)).
Queries("versions", "")
// GetBucketPolicyStatus
router.Methods(http.MethodGet).
HandlerFunc(s3APIMiddleware(api.GetBucketPolicyStatusHandler)).
Queries("policyStatus", "")
// PutBucketLifecycle
router.Methods(http.MethodPut).
HandlerFunc(s3APIMiddleware(api.PutBucketLifecycleHandler)).
Queries("lifecycle", "")
// PutBucketReplicationConfig
router.Methods(http.MethodPut).
HandlerFunc(s3APIMiddleware(api.PutBucketReplicationConfigHandler)).
Queries("replication", "")
// PutBucketEncryption
router.Methods(http.MethodPut).
HandlerFunc(s3APIMiddleware(api.PutBucketEncryptionHandler)).
Queries("encryption", "")
// PutBucketPolicy
router.Methods(http.MethodPut).
HandlerFunc(s3APIMiddleware(api.PutBucketPolicyHandler)).
Queries("policy", "")
// PutBucketObjectLockConfig
router.Methods(http.MethodPut).
HandlerFunc(s3APIMiddleware(api.PutBucketObjectLockConfigHandler)).
Queries("object-lock", "")
// PutBucketTaggingHandler
router.Methods(http.MethodPut).
HandlerFunc(s3APIMiddleware(api.PutBucketTaggingHandler)).
Queries("tagging", "")
// PutBucketVersioning
router.Methods(http.MethodPut).
HandlerFunc(s3APIMiddleware(api.PutBucketVersioningHandler)).
Queries("versioning", "")
// PutBucketNotification
router.Methods(http.MethodPut).
HandlerFunc(s3APIMiddleware(api.PutBucketNotificationHandler)).
Queries("notification", "")
// ResetBucketReplicationStart - MinIO extension API
router.Methods(http.MethodPut).
HandlerFunc(s3APIMiddleware(api.ResetBucketReplicationStartHandler)).
Queries("replication-reset", "")
// PutBucket
router.Methods(http.MethodPut).
HandlerFunc(s3APIMiddleware(api.PutBucketHandler))
// HeadBucket
router.Methods(http.MethodHead).
HandlerFunc(s3APIMiddleware(api.HeadBucketHandler))
// PostPolicy
router.Methods(http.MethodPost).
MatcherFunc(func(r *http.Request, _ *mux.RouteMatch) bool {
return isRequestPostPolicySignatureV4(r)
}).
HandlerFunc(s3APIMiddleware(api.PostPolicyBucketHandler, traceHdrsS3HFlag))
// DeleteMultipleObjects
router.Methods(http.MethodPost).
HandlerFunc(s3APIMiddleware(api.DeleteMultipleObjectsHandler)).
Queries("delete", "")
// DeleteBucketPolicy
router.Methods(http.MethodDelete).
HandlerFunc(s3APIMiddleware(api.DeleteBucketPolicyHandler)).
Queries("policy", "")
// DeleteBucketReplication
router.Methods(http.MethodDelete).
HandlerFunc(s3APIMiddleware(api.DeleteBucketReplicationConfigHandler)).
Queries("replication", "")
// DeleteBucketLifecycle
router.Methods(http.MethodDelete).
HandlerFunc(s3APIMiddleware(api.DeleteBucketLifecycleHandler)).
Queries("lifecycle", "")
// DeleteBucketEncryption
router.Methods(http.MethodDelete).
HandlerFunc(s3APIMiddleware(api.DeleteBucketEncryptionHandler)).
Queries("encryption", "")
// DeleteBucket
router.Methods(http.MethodDelete).
HandlerFunc(s3APIMiddleware(api.DeleteBucketHandler))
// MinIO extension API for replication.
//
router.Methods(http.MethodGet).
HandlerFunc(s3APIMiddleware(api.GetBucketReplicationMetricsV2Handler)).
Queries("replication-metrics", "2")
// deprecated handler
router.Methods(http.MethodGet).
HandlerFunc(s3APIMiddleware(api.GetBucketReplicationMetricsHandler)).
Queries("replication-metrics", "")
// ValidateBucketReplicationCreds
router.Methods(http.MethodGet).
HandlerFunc(s3APIMiddleware(api.ValidateBucketReplicationCredsHandler)).
Queries("replication-check", "")
// Register rejected bucket APIs
for _, r := range rejectedBucketAPIs {
router.Methods(r.methods...).
HandlerFunc(collectAPIStats(r.api, httpTraceAll(notImplementedHandler))).
Queries(r.queries...)
}
// S3 ListObjectsV1 (Legacy)
router.Methods(http.MethodGet).
HandlerFunc(s3APIMiddleware(api.ListObjectsV1Handler))
}
// Root operation
// ListenNotification
apiRouter.Methods(http.MethodGet).Path(SlashSeparator).
HandlerFunc(s3APIMiddleware(api.ListenNotificationHandler, noThrottleS3HFlag)).
Queries("events", "{events:.*}")
// ListBuckets
apiRouter.Methods(http.MethodGet).Path(SlashSeparator).
HandlerFunc(s3APIMiddleware(api.ListBucketsHandler))
// S3 browser with signature v4 adds '//' for ListBuckets request, so rather
// than failing with UnknownAPIRequest we simply handle it for now.
apiRouter.Methods(http.MethodGet).Path(SlashSeparator + SlashSeparator).
HandlerFunc(s3APIMiddleware(api.ListBucketsHandler))
// If none of the routes match add default error handler routes
apiRouter.NotFoundHandler = collectAPIStats("notfound", httpTraceAll(errorResponseHandler))
apiRouter.MethodNotAllowedHandler = collectAPIStats("methodnotallowed", httpTraceAll(methodNotAllowedHandler("S3")))
}
// corsHandler handler for CORS (Cross Origin Resource Sharing)
func corsHandler(handler http.Handler) http.Handler {
commonS3Headers := []string{
xhttp.Date,
xhttp.ETag,
xhttp.ServerInfo,
xhttp.Connection,
xhttp.AcceptRanges,
xhttp.ContentRange,
xhttp.ContentEncoding,
xhttp.ContentLength,
xhttp.ContentType,
xhttp.ContentDisposition,
xhttp.LastModified,
xhttp.ContentLanguage,
xhttp.CacheControl,
xhttp.RetryAfter,
xhttp.AmzBucketRegion,
xhttp.Expires,
"X-Amz*",
"x-amz*",
"*",
}
opts := cors.Options{
AllowOriginFunc: func(origin string) bool {
for _, allowedOrigin := range globalAPIConfig.getCorsAllowOrigins() {
if wildcard.MatchSimple(allowedOrigin, origin) {
return true
}
}
return false
},
AllowedMethods: []string{
http.MethodGet,
http.MethodPut,
http.MethodHead,
http.MethodPost,
http.MethodDelete,
http.MethodOptions,
http.MethodPatch,
},
AllowedHeaders: commonS3Headers,
ExposedHeaders: commonS3Headers,
AllowCredentials: true,
}
return cors.New(opts).Handler(handler)
}