141 lines
3.2 KiB
Go
141 lines
3.2 KiB
Go
// Copyright 2018 Drone.IO Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package web
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import (
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"context"
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"crypto/md5"
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"fmt"
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"html/template"
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"io/ioutil"
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"net/http"
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"path/filepath"
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"time"
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"github.com/drone/drone-ui/dist"
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"github.com/drone/drone/model"
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"github.com/drone/drone/shared/token"
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"github.com/drone/drone/version"
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"github.com/dimfeld/httptreemux"
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)
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// Endpoint provides the website endpoints.
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type Endpoint interface {
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// Register registers the provider endpoints.
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Register(*httptreemux.ContextMux)
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}
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// New returns the default website endpoint.
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func New(opt ...Option) Endpoint {
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opts := new(Options)
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for _, f := range opt {
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f(opts)
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}
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if opts.path != "" {
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return fromPath(opts)
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}
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return &website{
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fs: dist.New(),
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opts: opts,
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tmpl: mustCreateTemplate(
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string(dist.MustLookup("/index.html")),
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),
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}
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}
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func fromPath(opts *Options) *website {
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f := filepath.Join(opts.path, "index.html")
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b, err := ioutil.ReadFile(f)
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if err != nil {
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panic(err)
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}
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return &website{
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fs: http.Dir(opts.path),
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tmpl: mustCreateTemplate(string(b)),
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opts: opts,
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}
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}
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type website struct {
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opts *Options
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fs http.FileSystem
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tmpl *template.Template
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}
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func (w *website) Register(mux *httptreemux.ContextMux) {
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h := http.FileServer(w.fs)
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h = setupCache(h)
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mux.Handler("GET", "/favicon.png", h)
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mux.Handler("GET", "/static/*filepath", h)
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mux.NotFoundHandler = w.handleIndex
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}
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func (w *website) handleIndex(rw http.ResponseWriter, r *http.Request) {
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rw.WriteHeader(200)
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var csrf string
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var user, _ = ToUser(r.Context())
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if user != nil {
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csrf, _ = token.New(
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token.CsrfToken,
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user.Login,
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).Sign(user.Hash)
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}
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var syncing bool
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if user != nil {
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syncing = time.Unix(user.Synced, 0).Add(w.opts.sync).Before(time.Now())
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}
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params := map[string]interface{}{
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"user": user,
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"csrf": csrf,
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"syncing": syncing,
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"version": version.Version.String(),
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}
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rw.Header().Set("Content-Type", "text/html; charset=UTF-8")
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w.tmpl.Execute(rw, params)
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}
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func setupCache(h http.Handler) http.Handler {
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data := []byte(time.Now().String())
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etag := fmt.Sprintf("%x", md5.Sum(data))
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return http.HandlerFunc(
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func(w http.ResponseWriter, r *http.Request) {
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w.Header().Set("Cache-Control", "public, max-age=31536000")
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w.Header().Del("Expires")
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w.Header().Set("ETag", etag)
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h.ServeHTTP(w, r)
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},
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)
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}
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// WithUser returns a context with the current authenticated user.
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func WithUser(c context.Context, user *model.User) context.Context {
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return context.WithValue(c, userKey, user)
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}
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// ToUser returns a user from the context.
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func ToUser(c context.Context) (*model.User, bool) {
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user, ok := c.Value(userKey).(*model.User)
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return user, ok
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}
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type key int
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const userKey key = 0
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