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minio/cmd/web-router.go

120 lines
4.0 KiB

/*
* MinIO Cloud Storage, (C) 2016 MinIO, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package cmd
import (
"fmt"
"net/http"
assetfs "github.com/elazarl/go-bindata-assetfs"
"github.com/gorilla/handlers"
"github.com/gorilla/mux"
"github.com/minio/minio/browser"
"github.com/minio/minio/cmd/logger"
jsonrpc "github.com/minio/minio/pkg/rpc"
"github.com/minio/minio/pkg/rpc/json2"
)
// webAPI container for Web API.
type webAPIHandlers struct {
ObjectAPI func() ObjectLayer
CacheAPI func() CacheObjectLayer
}
// indexHandler - Handler to serve index.html
type indexHandler struct {
handler http.Handler
}
func (h indexHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
r.URL.Path = minioReservedBucketPath + SlashSeparator
h.handler.ServeHTTP(w, r)
}
const assetPrefix = "production"
func assetFS() *assetfs.AssetFS {
return &assetfs.AssetFS{
Asset: browser.Asset,
AssetDir: browser.AssetDir,
AssetInfo: browser.AssetInfo,
Prefix: assetPrefix,
}
}
// specialAssets are files which are unique files not embedded inside index_bundle.js.
const specialAssets = "index_bundle.*.js|loader.css|logo.svg|firefox.png|safari.png|chrome.png|favicon-16x16.png|favicon-32x32.png|favicon-96x96.png"
// registerWebRouter - registers web router for serving minio browser.
func registerWebRouter(router *mux.Router) error {
// Initialize Web.
web := &webAPIHandlers{
ObjectAPI: newObjectLayerFn,
CacheAPI: newCachedObjectLayerFn,
}
// Initialize a new json2 codec.
codec := json2.NewCodec()
// MinIO browser router.
webBrowserRouter := router.PathPrefix(minioReservedBucketPath).HeadersRegexp("User-Agent", ".*Mozilla.*").Subrouter()
// Initialize json rpc handlers.
webRPC := jsonrpc.NewServer()
webRPC.RegisterCodec(codec, "application/json")
webRPC.RegisterCodec(codec, "application/json; charset=UTF-8")
webRPC.RegisterAfterFunc(func(ri *jsonrpc.RequestInfo) {
if ri != nil {
claims, _, _ := webRequestAuthenticate(ri.Request)
bucketName, objectName := extractBucketObject(ri.Args)
ri.Request = mux.SetURLVars(ri.Request, map[string]string{
"bucket": bucketName,
"object": objectName,
})
if globalHTTPTrace.NumSubscribers() > 0 {
globalHTTPTrace.Publish(WebTrace(ri))
}
logger.AuditLog(ri.ResponseWriter, ri.Request, ri.Method, claims.Map())
}
})
// Register RPC handlers with server
if err := webRPC.RegisterService(web, "web"); err != nil {
return err
}
// RPC handler at URI - /minio/webrpc
webBrowserRouter.Methods(http.MethodPost).Path("/webrpc").Handler(webRPC)
webBrowserRouter.Methods(http.MethodPut).Path("/upload/{bucket}/{object:.+}").HandlerFunc(httpTraceHdrs(web.Upload))
// These methods use short-expiry tokens in the URLs. These tokens may unintentionally
// be logged, so a new one must be generated for each request.
webBrowserRouter.Methods(http.MethodGet).Path("/download/{bucket}/{object:.+}").Queries("token", "{token:.*}").HandlerFunc(httpTraceHdrs(web.Download))
webBrowserRouter.Methods(http.MethodPost).Path("/zip").Queries("token", "{token:.*}").HandlerFunc(httpTraceHdrs(web.DownloadZip))
// Create compressed assets handler
compressAssets := handlers.CompressHandler(http.StripPrefix(minioReservedBucketPath, http.FileServer(assetFS())))
// Serve javascript files and favicon from assets.
webBrowserRouter.Path(fmt.Sprintf("/{assets:%s}", specialAssets)).Handler(compressAssets)
// Serve index.html from assets for rest of the requests.
webBrowserRouter.Path("/{index:.*}").Handler(indexHandler{compressAssets})
return nil
}