593 lines
19 KiB
Go
593 lines
19 KiB
Go
package api
|
|
|
|
import (
|
|
"bytes"
|
|
"context"
|
|
"encoding/json"
|
|
"fmt"
|
|
"net/http"
|
|
"strings"
|
|
"sync"
|
|
"time"
|
|
|
|
"github.com/didip/tollbooth"
|
|
"github.com/didip/tollbooth_chi"
|
|
"github.com/go-chi/chi"
|
|
"github.com/go-chi/chi/middleware"
|
|
"github.com/go-chi/cors"
|
|
"github.com/go-chi/render"
|
|
"github.com/go-pkgz/auth"
|
|
"github.com/go-pkgz/lcw"
|
|
log "github.com/go-pkgz/lgr"
|
|
R "github.com/go-pkgz/rest"
|
|
"github.com/go-pkgz/rest/logger"
|
|
"github.com/pkg/errors"
|
|
"github.com/rakyll/statik/fs"
|
|
|
|
"github.com/umputun/remark/backend/app/notify"
|
|
"github.com/umputun/remark/backend/app/rest"
|
|
"github.com/umputun/remark/backend/app/rest/proxy"
|
|
"github.com/umputun/remark/backend/app/store"
|
|
"github.com/umputun/remark/backend/app/store/image"
|
|
"github.com/umputun/remark/backend/app/store/service"
|
|
)
|
|
|
|
// Rest is a rest access server
|
|
type Rest struct {
|
|
Version string
|
|
|
|
DataService *service.DataStore
|
|
Authenticator *auth.Service
|
|
Cache LoadingCache
|
|
ImageProxy *proxy.Image
|
|
CommentFormatter *store.CommentFormatter
|
|
Migrator *Migrator
|
|
NotifyService *notify.Service
|
|
ImageService *image.Service
|
|
Streamer *Streamer
|
|
|
|
AnonVote bool
|
|
WebRoot string
|
|
RemarkURL string
|
|
ReadOnlyAge int
|
|
SharedSecret string
|
|
ScoreThresholds struct {
|
|
Low int
|
|
Critical int
|
|
}
|
|
UpdateLimiter float64
|
|
EmailNotifications bool
|
|
EmojiEnabled bool
|
|
SimpleView bool
|
|
|
|
SSLConfig SSLConfig
|
|
httpsServer *http.Server
|
|
httpServer *http.Server
|
|
lock sync.Mutex
|
|
|
|
pubRest public
|
|
privRest private
|
|
adminRest admin
|
|
rssRest rss
|
|
}
|
|
|
|
// LoadingCache defines interface for caching
|
|
type LoadingCache interface {
|
|
Get(key lcw.Key, fn func() ([]byte, error)) (data []byte, err error) // load from cache if found or put to cache and return
|
|
Flush(req lcw.FlusherRequest) // evict matched records
|
|
}
|
|
|
|
const hardBodyLimit = 1024 * 64 // limit size of body
|
|
|
|
const lastCommentsScope = "last"
|
|
|
|
type commentsWithInfo struct {
|
|
Comments []store.Comment `json:"comments"`
|
|
Info store.PostInfo `json:"info,omitempty"`
|
|
}
|
|
|
|
// Run the lister and request's router, activate rest server
|
|
func (s *Rest) Run(port int) {
|
|
switch s.SSLConfig.SSLMode {
|
|
case None:
|
|
log.Printf("[INFO] activate http rest server on port %d", port)
|
|
|
|
s.lock.Lock()
|
|
s.httpServer = s.makeHTTPServer(port, s.routes())
|
|
s.httpServer.ErrorLog = log.ToStdLogger(log.Default(), "WARN")
|
|
s.lock.Unlock()
|
|
|
|
err := s.httpServer.ListenAndServe()
|
|
log.Printf("[WARN] http server terminated, %s", err)
|
|
case Static:
|
|
log.Printf("[INFO] activate https server in 'static' mode on port %d", s.SSLConfig.Port)
|
|
|
|
s.lock.Lock()
|
|
s.httpsServer = s.makeHTTPSServer(s.SSLConfig.Port, s.routes())
|
|
s.httpsServer.ErrorLog = log.ToStdLogger(log.Default(), "WARN")
|
|
|
|
s.httpServer = s.makeHTTPServer(port, s.httpToHTTPSRouter())
|
|
s.httpServer.ErrorLog = log.ToStdLogger(log.Default(), "WARN")
|
|
s.lock.Unlock()
|
|
|
|
go func() {
|
|
log.Printf("[INFO] activate http redirect server on port %d", port)
|
|
err := s.httpServer.ListenAndServe()
|
|
log.Printf("[WARN] http redirect server terminated, %s", err)
|
|
}()
|
|
|
|
err := s.httpsServer.ListenAndServeTLS(s.SSLConfig.Cert, s.SSLConfig.Key)
|
|
log.Printf("[WARN] https server terminated, %s", err)
|
|
case Auto:
|
|
log.Printf("[INFO] activate https server in 'auto' mode on port %d", s.SSLConfig.Port)
|
|
|
|
m := s.makeAutocertManager()
|
|
s.lock.Lock()
|
|
s.httpsServer = s.makeHTTPSAutocertServer(s.SSLConfig.Port, s.routes(), m)
|
|
s.httpsServer.ErrorLog = log.ToStdLogger(log.Default(), "WARN")
|
|
|
|
s.httpServer = s.makeHTTPServer(port, s.httpChallengeRouter(m))
|
|
s.httpServer.ErrorLog = log.ToStdLogger(log.Default(), "WARN")
|
|
|
|
s.lock.Unlock()
|
|
|
|
go func() {
|
|
log.Printf("[INFO] activate http challenge server on port %d", port)
|
|
|
|
err := s.httpServer.ListenAndServe()
|
|
log.Printf("[WARN] http challenge server terminated, %s", err)
|
|
}()
|
|
|
|
err := s.httpsServer.ListenAndServeTLS("", "")
|
|
log.Printf("[WARN] https server terminated, %s", err)
|
|
}
|
|
}
|
|
|
|
// Shutdown rest http server
|
|
func (s *Rest) Shutdown() {
|
|
log.Print("[WARN] shutdown rest server")
|
|
ctx, cancel := context.WithTimeout(context.Background(), time.Second)
|
|
defer cancel()
|
|
s.lock.Lock()
|
|
if s.httpServer != nil {
|
|
if err := s.httpServer.Shutdown(ctx); err != nil {
|
|
log.Printf("[DEBUG] http shutdown error, %s", err)
|
|
}
|
|
log.Print("[DEBUG] shutdown http server completed")
|
|
}
|
|
|
|
if s.httpsServer != nil {
|
|
log.Print("[WARN] shutdown https server")
|
|
if err := s.httpsServer.Shutdown(ctx); err != nil {
|
|
log.Printf("[DEBUG] https shutdown error, %s", err)
|
|
}
|
|
log.Print("[DEBUG] shutdown https server completed")
|
|
}
|
|
s.lock.Unlock()
|
|
}
|
|
|
|
func (s *Rest) makeHTTPServer(port int, router http.Handler) *http.Server {
|
|
return &http.Server{
|
|
Addr: fmt.Sprintf(":%d", port),
|
|
Handler: router,
|
|
ReadHeaderTimeout: 5 * time.Second,
|
|
// WriteTimeout: 120 * time.Second, // TODO: such a long timeout needed for blocking export (backup) request
|
|
IdleTimeout: 30 * time.Second,
|
|
}
|
|
}
|
|
|
|
func (s *Rest) routes() chi.Router {
|
|
router := chi.NewRouter()
|
|
router.Use(middleware.Throttle(1000), middleware.RealIP, R.Recoverer(log.Default()))
|
|
router.Use(R.AppInfo("remark42", "umputun", s.Version), R.Ping)
|
|
|
|
s.pubRest, s.privRest, s.adminRest, s.rssRest = s.controllerGroups() // assign controllers for groups
|
|
|
|
corsMiddleware := cors.New(cors.Options{
|
|
AllowedOrigins: []string{"*"},
|
|
AllowedMethods: []string{"GET", "POST", "PUT", "DELETE", "OPTIONS"},
|
|
AllowedHeaders: []string{"Accept", "Authorization", "Content-Type", "X-XSRF-Token", "X-JWT"},
|
|
ExposedHeaders: []string{"Authorization"},
|
|
AllowCredentials: true,
|
|
MaxAge: 300,
|
|
})
|
|
router.Use(corsMiddleware.Handler)
|
|
|
|
ipFn := func(ip string) string { return store.HashValue(ip, s.SharedSecret)[:12] } // logger uses it for anonymization
|
|
logInfoWithBody := logger.New(logger.Log(log.Default()), logger.WithBody, logger.IPfn(ipFn), logger.Prefix("[INFO]")).Handler
|
|
|
|
authHandler, avatarHandler := s.Authenticator.Handlers()
|
|
|
|
router.Group(func(r chi.Router) {
|
|
r.Use(middleware.Timeout(5 * time.Second))
|
|
r.Use(logInfoWithBody, tollbooth_chi.LimitHandler(tollbooth.NewLimiter(5, nil)), middleware.NoCache)
|
|
r.Mount("/auth", authHandler)
|
|
})
|
|
|
|
router.Group(func(r chi.Router) {
|
|
r.Use(middleware.Timeout(5 * time.Second))
|
|
r.Use(tollbooth_chi.LimitHandler(tollbooth.NewLimiter(100, nil)), middleware.NoCache)
|
|
r.Mount("/avatar", avatarHandler)
|
|
})
|
|
|
|
authMiddleware := s.Authenticator.Middleware()
|
|
|
|
// api routes
|
|
router.Route("/api/v1", func(rapi chi.Router) {
|
|
|
|
rapi.Group(func(rava chi.Router) {
|
|
rava.Use(middleware.Timeout(5 * time.Second))
|
|
rava.Use(tollbooth_chi.LimitHandler(tollbooth.NewLimiter(100, nil)))
|
|
rava.Use(middleware.NoCache)
|
|
rava.Mount("/avatar", avatarHandler)
|
|
})
|
|
|
|
// open routes
|
|
rapi.Group(func(ropen chi.Router) {
|
|
ropen.Use(middleware.Timeout(30 * time.Second))
|
|
ropen.Use(tollbooth_chi.LimitHandler(tollbooth.NewLimiter(10, nil)))
|
|
ropen.Use(authMiddleware.Trace, middleware.NoCache, logInfoWithBody)
|
|
ropen.Get("/config", s.configCtrl)
|
|
ropen.Get("/find", s.pubRest.findCommentsCtrl)
|
|
ropen.Get("/id/{id}", s.pubRest.commentByIDCtrl)
|
|
ropen.Get("/comments", s.pubRest.findUserCommentsCtrl)
|
|
ropen.Get("/last/{limit}", s.pubRest.lastCommentsCtrl)
|
|
ropen.Get("/count", s.pubRest.countCtrl)
|
|
ropen.Post("/counts", s.pubRest.countMultiCtrl)
|
|
ropen.Get("/list", s.pubRest.listCtrl)
|
|
ropen.Post("/preview", s.pubRest.previewCommentCtrl)
|
|
ropen.Get("/info", s.pubRest.infoCtrl)
|
|
ropen.Get("/img", s.ImageProxy.Handler)
|
|
|
|
ropen.Route("/rss", func(rrss chi.Router) {
|
|
rrss.Get("/post", s.rssRest.postCommentsCtrl)
|
|
rrss.Get("/site", s.rssRest.siteCommentsCtrl)
|
|
rrss.Get("/reply", s.rssRest.repliesCtrl)
|
|
})
|
|
|
|
})
|
|
|
|
// open routes, streams, no send timeout
|
|
rapi.Route("/stream", func(rstream chi.Router) {
|
|
rstream.Use(tollbooth_chi.LimitHandler(tollbooth.NewLimiter(10, nil)))
|
|
rstream.Use(authMiddleware.Trace, middleware.NoCache, logInfoWithBody)
|
|
rstream.Get("/info", s.pubRest.infoStreamCtrl)
|
|
rstream.Get("/last", s.pubRest.lastCommentsStreamCtrl)
|
|
})
|
|
|
|
// open routes, cached
|
|
rapi.Group(func(ropen chi.Router) {
|
|
ropen.Use(middleware.Timeout(30 * time.Second))
|
|
ropen.Use(tollbooth_chi.LimitHandler(tollbooth.NewLimiter(10, nil)))
|
|
ropen.Use(authMiddleware.Trace, logInfoWithBody)
|
|
ropen.Get("/picture/{user}/{id}", s.pubRest.loadPictureCtrl)
|
|
})
|
|
|
|
// protected routes, require auth
|
|
rapi.Group(func(rauth chi.Router) {
|
|
rauth.Use(middleware.Timeout(30 * time.Second))
|
|
rauth.Use(tollbooth_chi.LimitHandler(tollbooth.NewLimiter(10, nil)))
|
|
rauth.Use(authMiddleware.Auth, matchSiteID, middleware.NoCache, logInfoWithBody)
|
|
rauth.Get("/user", s.privRest.userInfoCtrl)
|
|
rauth.Get("/userdata", s.privRest.userAllDataCtrl)
|
|
})
|
|
|
|
// admin routes, require auth and admin users only
|
|
rapi.Route("/admin", func(radmin chi.Router) {
|
|
radmin.Use(middleware.Timeout(30 * time.Second))
|
|
radmin.Use(tollbooth_chi.LimitHandler(tollbooth.NewLimiter(10, nil)))
|
|
radmin.Use(authMiddleware.Auth, authMiddleware.AdminOnly, matchSiteID)
|
|
radmin.Use(middleware.NoCache, logInfoWithBody)
|
|
|
|
radmin.Delete("/comment/{id}", s.adminRest.deleteCommentCtrl)
|
|
radmin.Put("/user/{userid}", s.adminRest.setBlockCtrl)
|
|
radmin.Delete("/user/{userid}", s.adminRest.deleteUserCtrl)
|
|
radmin.Get("/user/{userid}", s.adminRest.getUserInfoCtrl)
|
|
radmin.Get("/deleteme", s.adminRest.deleteMeRequestCtrl)
|
|
radmin.Put("/verify/{userid}", s.adminRest.setVerifyCtrl)
|
|
radmin.Put("/pin/{id}", s.adminRest.setPinCtrl)
|
|
radmin.Get("/blocked", s.adminRest.blockedUsersCtrl)
|
|
radmin.Put("/readonly", s.adminRest.setReadOnlyCtrl)
|
|
radmin.Put("/title/{id}", s.adminRest.setTitleCtrl)
|
|
|
|
// migrator
|
|
radmin.Get("/export", s.adminRest.migrator.exportCtrl)
|
|
radmin.Post("/import", s.adminRest.migrator.importCtrl)
|
|
radmin.Post("/import/form", s.adminRest.migrator.importFormCtrl)
|
|
radmin.Post("/remap", s.adminRest.migrator.remapCtrl)
|
|
radmin.Get("/wait", s.adminRest.migrator.waitCtrl)
|
|
})
|
|
|
|
// protected routes, throttled to 10/s by default, controlled by external UpdateLimiter param
|
|
rapi.Group(func(rauth chi.Router) {
|
|
rauth.Use(middleware.Timeout(10 * time.Second))
|
|
rauth.Use(tollbooth_chi.LimitHandler(tollbooth.NewLimiter(s.updateLimiter(), nil)))
|
|
rauth.Use(authMiddleware.Auth, matchSiteID)
|
|
rauth.Use(middleware.NoCache)
|
|
rauth.Use(logger.New(logger.Log(log.Default()), logger.WithBody, logger.Prefix("[DEBUG]"), logger.IPfn(ipFn)).Handler)
|
|
|
|
rauth.Put("/comment/{id}", s.privRest.updateCommentCtrl)
|
|
rauth.Post("/comment", s.privRest.createCommentCtrl)
|
|
rauth.Put("/vote/{id}", s.privRest.voteCtrl)
|
|
rauth.With(rejectAnonUser).Post("/deleteme", s.privRest.deleteMeCtrl)
|
|
rauth.With(rejectAnonUser).Get("/email", s.privRest.getEmailCtrl)
|
|
rauth.With(rejectAnonUser).Post("/email/subscribe", s.privRest.sendEmailConfirmationCtrl)
|
|
rauth.With(rejectAnonUser).Post("/email/confirm", s.privRest.setConfirmedEmailCtrl)
|
|
rauth.With(rejectAnonUser).Delete("/email", s.privRest.deleteEmailCtrl)
|
|
})
|
|
|
|
// protected routes, anonymous rejected
|
|
rapi.Group(func(rauth chi.Router) {
|
|
rauth.Use(middleware.Timeout(10 * time.Second))
|
|
rauth.Use(tollbooth_chi.LimitHandler(tollbooth.NewLimiter(s.updateLimiter(), nil)))
|
|
rauth.Use(authMiddleware.Auth, rejectAnonUser, matchSiteID)
|
|
rauth.Use(logger.New(logger.Log(log.Default()), logger.Prefix("[DEBUG]"), logger.IPfn(ipFn)).Handler)
|
|
rauth.Post("/picture", s.privRest.savePictureCtrl)
|
|
})
|
|
|
|
})
|
|
|
|
// open routes on root level
|
|
router.Group(func(rroot chi.Router) {
|
|
rroot.Use(middleware.Timeout(10 * time.Second))
|
|
rroot.Use(tollbooth_chi.LimitHandler(tollbooth.NewLimiter(50, nil)))
|
|
rroot.Get("/index.html", s.pubRest.getStartedCtrl)
|
|
rroot.Get("/robots.txt", s.pubRest.robotsCtrl)
|
|
rroot.Get("/email/unsubscribe.html", s.privRest.emailUnsubscribeCtrl)
|
|
rroot.Post("/email/unsubscribe.html", s.privRest.emailUnsubscribeCtrl)
|
|
})
|
|
|
|
// file server for static content from /web
|
|
addFileServer(router, "/web", http.Dir(s.WebRoot))
|
|
return router
|
|
}
|
|
|
|
func (s *Rest) controllerGroups() (public, private, admin, rss) {
|
|
|
|
pubGrp := public{
|
|
dataService: s.DataService,
|
|
cache: s.Cache,
|
|
imageService: s.ImageService,
|
|
commentFormatter: s.CommentFormatter,
|
|
readOnlyAge: s.ReadOnlyAge,
|
|
webRoot: s.WebRoot,
|
|
streamer: s.Streamer,
|
|
}
|
|
|
|
privGrp := private{
|
|
dataService: s.DataService,
|
|
cache: s.Cache,
|
|
imageService: s.ImageService,
|
|
commentFormatter: s.CommentFormatter,
|
|
readOnlyAge: s.ReadOnlyAge,
|
|
authenticator: s.Authenticator,
|
|
notifyService: s.NotifyService,
|
|
remarkURL: s.RemarkURL,
|
|
anonVote: s.AnonVote,
|
|
}
|
|
|
|
admGrp := admin{
|
|
dataService: s.DataService,
|
|
migrator: s.Migrator,
|
|
cache: s.Cache,
|
|
authenticator: s.Authenticator,
|
|
readOnlyAge: s.ReadOnlyAge,
|
|
}
|
|
|
|
rssGrp := rss{
|
|
dataService: s.DataService,
|
|
cache: s.Cache,
|
|
}
|
|
|
|
return pubGrp, privGrp, admGrp, rssGrp
|
|
}
|
|
|
|
// updateLimiter returns UpdateLimiter if set, or 10 if not
|
|
func (s *Rest) updateLimiter() float64 {
|
|
lmt := 10.0
|
|
if s.UpdateLimiter > 0 {
|
|
lmt = s.UpdateLimiter
|
|
}
|
|
return lmt
|
|
}
|
|
|
|
// GET /config?site=siteID - returns configuration
|
|
func (s *Rest) configCtrl(w http.ResponseWriter, r *http.Request) {
|
|
siteID := r.URL.Query().Get("site")
|
|
|
|
admins, _ := s.DataService.AdminStore.Admins(siteID)
|
|
emails, _ := s.DataService.AdminStore.Email(siteID)
|
|
|
|
cnf := struct {
|
|
Version string `json:"version"`
|
|
EditDuration int `json:"edit_duration"`
|
|
MaxCommentSize int `json:"max_comment_size"`
|
|
Admins []string `json:"admins"`
|
|
AdminEmail string `json:"admin_email"`
|
|
Auth []string `json:"auth_providers"`
|
|
AnonVote bool `json:"anon_vote"`
|
|
LowScore int `json:"low_score"`
|
|
CriticalScore int `json:"critical_score"`
|
|
PositiveScore bool `json:"positive_score"`
|
|
ReadOnlyAge int `json:"readonly_age"`
|
|
MaxImageSize int `json:"max_image_size"`
|
|
EmailNotifications bool `json:"email_notifications"`
|
|
EmojiEnabled bool `json:"emoji_enabled"`
|
|
SimpleView bool `json:"simple_view"`
|
|
}{
|
|
Version: s.Version,
|
|
EditDuration: int(s.DataService.EditDuration.Seconds()),
|
|
MaxCommentSize: s.DataService.MaxCommentSize,
|
|
Admins: admins,
|
|
AdminEmail: emails,
|
|
LowScore: s.ScoreThresholds.Low,
|
|
CriticalScore: s.ScoreThresholds.Critical,
|
|
PositiveScore: s.DataService.PositiveScore,
|
|
ReadOnlyAge: s.ReadOnlyAge,
|
|
MaxImageSize: s.ImageService.Store.SizeLimit(),
|
|
EmailNotifications: s.EmailNotifications,
|
|
EmojiEnabled: s.EmojiEnabled,
|
|
AnonVote: s.AnonVote,
|
|
SimpleView: s.SimpleView,
|
|
}
|
|
|
|
cnf.Auth = []string{}
|
|
for _, ap := range s.Authenticator.Providers() {
|
|
cnf.Auth = append(cnf.Auth, ap.Name())
|
|
}
|
|
|
|
if cnf.Admins == nil { // prevent json serialization to nil
|
|
cnf.Admins = []string{}
|
|
}
|
|
render.Status(r, http.StatusOK)
|
|
render.JSON(w, r, cnf)
|
|
}
|
|
|
|
// serves static files from /web or embedded by statik
|
|
func addFileServer(r chi.Router, path string, root http.FileSystem) {
|
|
|
|
var webFS http.Handler
|
|
|
|
statikFS, err := fs.New()
|
|
if err != nil {
|
|
log.Printf("[DEBUG] no embedded assets loaded, %s", err)
|
|
log.Printf("[INFO] run file server for %s, path %s", root, path)
|
|
webFS = http.FileServer(root)
|
|
} else {
|
|
log.Printf("[INFO] run file server for %s, embedded", root)
|
|
webFS = http.FileServer(statikFS)
|
|
}
|
|
|
|
origPath := path
|
|
webFS = http.StripPrefix(path, webFS)
|
|
if path != "/" && path[len(path)-1] != '/' {
|
|
r.Get(path, http.RedirectHandler(path+"/", 301).ServeHTTP)
|
|
path += "/"
|
|
}
|
|
path += "*"
|
|
|
|
r.With(tollbooth_chi.LimitHandler(tollbooth.NewLimiter(20, nil)), middleware.Timeout(10*time.Second)).
|
|
Get(path, func(w http.ResponseWriter, r *http.Request) {
|
|
// don't show dirs, just serve files
|
|
if strings.HasSuffix(r.URL.Path, "/") && len(r.URL.Path) > 1 && r.URL.Path != (origPath+"/") {
|
|
http.NotFound(w, r)
|
|
return
|
|
}
|
|
webFS.ServeHTTP(w, r)
|
|
})
|
|
}
|
|
|
|
func encodeJSONWithHTML(v interface{}) ([]byte, error) {
|
|
buf := &bytes.Buffer{}
|
|
enc := json.NewEncoder(buf)
|
|
enc.SetEscapeHTML(false)
|
|
if err := enc.Encode(v); err != nil {
|
|
return nil, errors.Wrap(err, "json encoding failed")
|
|
}
|
|
return buf.Bytes(), nil
|
|
}
|
|
|
|
func filterComments(comments []store.Comment, fn func(c store.Comment) bool) []store.Comment {
|
|
filtered := []store.Comment{}
|
|
for _, c := range comments {
|
|
if fn(c) {
|
|
filtered = append(filtered, c)
|
|
}
|
|
}
|
|
return filtered
|
|
}
|
|
|
|
// URLKey gets url from request to use it as cache key
|
|
// admins will have different keys in order to prevent leak of admin-only data to regular users
|
|
func URLKey(r *http.Request) string {
|
|
adminPrefix := "admin!!"
|
|
key := strings.TrimPrefix(r.URL.String(), adminPrefix) // prevents attach with fake url to get admin view
|
|
if user, err := rest.GetUserInfo(r); err == nil && user.Admin {
|
|
key = adminPrefix + key // make separate cache key for admins
|
|
}
|
|
return key
|
|
}
|
|
|
|
// URLKeyWithUser gets url from request to use it as cache key and attaching user ID
|
|
// admins will have different keys in order to prevent leak of admin-only data to regular users
|
|
func URLKeyWithUser(r *http.Request) string {
|
|
adminPrefix := "admin!!"
|
|
key := strings.TrimPrefix(r.URL.String(), adminPrefix) // prevents attach with fake url to get admin view
|
|
if user, err := rest.GetUserInfo(r); err == nil {
|
|
if user.Admin {
|
|
key = adminPrefix + user.ID + "!!" + key // make separate cache key for admins
|
|
} else {
|
|
key = user.ID + "!!" + key // make separate cache key for authed users
|
|
}
|
|
}
|
|
return key
|
|
}
|
|
|
|
// rejectAnonUser is a middleware rejecting anonymous users
|
|
func rejectAnonUser(next http.Handler) http.Handler {
|
|
fn := func(w http.ResponseWriter, r *http.Request) {
|
|
user, err := rest.GetUserInfo(r)
|
|
if err != nil {
|
|
http.Error(w, "Unauthorized", http.StatusUnauthorized)
|
|
return
|
|
}
|
|
|
|
if strings.HasPrefix(user.ID, "anonymous_") {
|
|
http.Error(w, "Access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
next.ServeHTTP(w, r)
|
|
}
|
|
return http.HandlerFunc(fn)
|
|
}
|
|
|
|
// matchSiteID is a middleware rejecting users with mismatch between site param and and User.SiteID
|
|
func matchSiteID(next http.Handler) http.Handler {
|
|
fn := func(w http.ResponseWriter, r *http.Request) {
|
|
user, err := rest.GetUserInfo(r)
|
|
if err != nil {
|
|
http.Error(w, "Unauthorized", http.StatusUnauthorized)
|
|
return
|
|
}
|
|
|
|
// skip for basic auth user
|
|
if user.Name == "admin" && user.ID == "admin" {
|
|
next.ServeHTTP(w, r)
|
|
return
|
|
}
|
|
|
|
siteID := r.URL.Query().Get("site")
|
|
if siteID != "" && user.SiteID != siteID {
|
|
http.Error(w, "Access denied", http.StatusForbidden)
|
|
return
|
|
}
|
|
next.ServeHTTP(w, r)
|
|
}
|
|
return http.HandlerFunc(fn)
|
|
}
|
|
|
|
func parseError(err error, defaultCode int) (code int) {
|
|
code = defaultCode
|
|
|
|
switch {
|
|
// voting errors
|
|
case strings.Contains(err.Error(), "can not vote for his own comment"):
|
|
code = rest.ErrVoteSelf
|
|
case strings.Contains(err.Error(), "already voted for"):
|
|
code = rest.ErrVoteDbl
|
|
case strings.Contains(err.Error(), "maximum number of votes exceeded for comment"):
|
|
code = rest.ErrVoteMax
|
|
case strings.Contains(err.Error(), "minimal score reached for comment"):
|
|
code = rest.ErrVoteMinScore
|
|
|
|
// edit errors
|
|
case strings.HasPrefix(err.Error(), "too late to edit"):
|
|
code = rest.ErrCommentEditExpired
|
|
case strings.HasPrefix(err.Error(), "parent comment with reply can't be edited"):
|
|
code = rest.ErrCommentEditChanged
|
|
|
|
}
|
|
|
|
return code
|
|
}
|