ntfy/server/server.go

1740 lines
62 KiB
Go
Raw Normal View History

2021-10-23 03:26:01 +02:00
package server
import (
"bytes"
2021-10-29 05:50:38 +02:00
"context"
2022-05-27 13:55:57 +02:00
"crypto/sha256"
2021-12-24 00:03:04 +01:00
"embed"
2022-01-17 19:28:07 +01:00
"encoding/base64"
2021-10-23 03:26:01 +02:00
"encoding/json"
2022-12-03 21:20:59 +01:00
"errors"
2021-10-23 19:21:33 +02:00
"fmt"
2023-02-23 03:00:56 +01:00
"github.com/emersion/go-smtp"
"github.com/gorilla/websocket"
"golang.org/x/sync/errgroup"
"heckel.io/ntfy/log"
"heckel.io/ntfy/user"
"heckel.io/ntfy/util"
2021-10-23 03:26:01 +02:00
"io"
2021-10-24 04:49:50 +02:00
"net"
2021-10-23 03:26:01 +02:00
"net/http"
"net/netip"
2022-01-14 18:13:14 +01:00
"net/url"
2022-01-10 22:28:13 +01:00
"os"
2022-01-14 18:13:14 +01:00
"path"
2022-01-02 23:56:12 +01:00
"path/filepath"
2021-10-23 03:26:01 +02:00
"regexp"
"sort"
2021-10-29 19:58:14 +02:00
"strconv"
2021-10-23 03:26:01 +02:00
"strings"
"sync"
"time"
2022-01-02 23:56:12 +01:00
"unicode/utf8"
2021-10-23 03:26:01 +02:00
)
2021-12-07 17:45:15 +01:00
// Server is the main server, providing the UI and API for ntfy
2021-10-23 03:26:01 +02:00
type Server struct {
2022-06-02 05:24:44 +02:00
config *Config
httpServer *http.Server
httpsServer *http.Server
unixListener net.Listener
smtpServer *smtp.Server
smtpServerBackend *smtpBackend
smtpSender mailer
topics map[string]*topic
2022-12-02 21:37:48 +01:00
visitors map[string]*visitor // ip:<ip> or user:<user>
2022-06-02 05:24:44 +02:00
firebaseClient *firebaseClient
messages int64
2023-02-22 04:44:30 +01:00
userManager *user.Manager // Might be nil!
messageCache *messageCache // Database that stores the messages
fileCache *fileCache // File system based cache that stores attachments
stripe stripeAPI // Stripe API, can be replaced with a mock
priceCache *util.LookupCache[map[string]int64] // Stripe price ID -> price as cents (USD implied!)
2022-06-02 05:24:44 +02:00
closeChan chan bool
mu sync.Mutex
2021-10-23 03:26:01 +02:00
}
2022-01-22 04:22:27 +01:00
// handleFunc extends the normal http.HandlerFunc to be able to easily return errors
type handleFunc func(http.ResponseWriter, *http.Request, *visitor) error
2021-10-23 03:26:01 +02:00
var (
2022-01-31 17:44:58 +01:00
// If changed, don't forget to update Android App and auth_sqlite.go
topicRegex = regexp.MustCompile(`^[-_A-Za-z0-9]{1,64}$`) // No /!
topicPathRegex = regexp.MustCompile(`^/[-_A-Za-z0-9]{1,64}$`) // Regex must match JS & Android app!
externalTopicPathRegex = regexp.MustCompile(`^/[^/]+\.[^/]+/[-_A-Za-z0-9]{1,64}$`) // Extended topic path, for web-app, e.g. /example.com/mytopic
jsonPathRegex = regexp.MustCompile(`^/[-_A-Za-z0-9]{1,64}(,[-_A-Za-z0-9]{1,64})*/json$`)
ssePathRegex = regexp.MustCompile(`^/[-_A-Za-z0-9]{1,64}(,[-_A-Za-z0-9]{1,64})*/sse$`)
rawPathRegex = regexp.MustCompile(`^/[-_A-Za-z0-9]{1,64}(,[-_A-Za-z0-9]{1,64})*/raw$`)
wsPathRegex = regexp.MustCompile(`^/[-_A-Za-z0-9]{1,64}(,[-_A-Za-z0-9]{1,64})*/ws$`)
authPathRegex = regexp.MustCompile(`^/[-_A-Za-z0-9]{1,64}(,[-_A-Za-z0-9]{1,64})*/auth$`)
publishPathRegex = regexp.MustCompile(`^/[-_A-Za-z0-9]{1,64}/(publish|send|trigger)$`)
2021-10-29 19:58:14 +02:00
2023-01-17 16:09:37 +01:00
webConfigPath = "/config.js"
accountPath = "/account"
matrixPushPath = "/_matrix/push/v1/notify"
apiHealthPath = "/v1/health"
apiTiers = "/v1/tiers"
2023-01-17 16:09:37 +01:00
apiAccountPath = "/v1/account"
apiAccountTokenPath = "/v1/account/token"
apiAccountPasswordPath = "/v1/account/password"
apiAccountSettingsPath = "/v1/account/settings"
apiAccountSubscriptionPath = "/v1/account/subscription"
apiAccountReservationPath = "/v1/account/reservation"
apiAccountBillingPortalPath = "/v1/account/billing/portal"
apiAccountBillingWebhookPath = "/v1/account/billing/webhook"
apiAccountBillingSubscriptionPath = "/v1/account/billing/subscription"
apiAccountBillingSubscriptionCheckoutSuccessTemplate = "/v1/account/billing/subscription/success/{CHECKOUT_SESSION_ID}"
apiAccountBillingSubscriptionCheckoutSuccessRegex = regexp.MustCompile(`/v1/account/billing/subscription/success/(.+)$`)
apiAccountReservationSingleRegex = regexp.MustCompile(`/v1/account/reservation/([-_A-Za-z0-9]{1,64})$`)
staticRegex = regexp.MustCompile(`^/static/.+`)
docsRegex = regexp.MustCompile(`^/docs(|/.*)$`)
fileRegex = regexp.MustCompile(`^/file/([-_A-Za-z0-9]{1,64})(?:\.[A-Za-z0-9]{1,16})?$`)
urlRegex = regexp.MustCompile(`^https?://`)
2021-10-23 03:26:01 +02:00
2022-03-06 02:24:10 +01:00
//go:embed site
webFs embed.FS
webFsCached = &util.CachingEmbedFS{ModTime: time.Now(), FS: webFs}
webSiteDir = "/site"
2022-03-06 03:28:25 +01:00
webHomeIndex = "/home.html" // Landing page, only if "web-root: home"
2022-03-06 02:24:10 +01:00
webAppIndex = "/app.html" // React app
2021-10-24 20:22:53 +02:00
2021-12-02 23:27:31 +01:00
//go:embed docs
2021-12-07 16:38:58 +01:00
docsStaticFs embed.FS
2021-12-02 23:27:31 +01:00
docsStaticCached = &util.CachingEmbedFS{ModTime: time.Now(), FS: docsStaticFs}
2021-10-23 03:26:01 +02:00
)
2021-12-14 04:30:28 +01:00
const (
2023-02-23 04:26:43 +01:00
firebaseControlTopic = "~control" // See Android if changed
firebasePollTopic = "~poll" // See iOS if changed
emptyMessageBody = "triggered" // Used if message body is empty
newMessageBody = "New message" // Used in poll requests as generic message
defaultAttachmentMessage = "You received a file: %s" // Used if message body is empty, and there is an attachment
encodingBase64 = "base64" // Used mainly for binary UnifiedPush messages
jsonBodyBytesLimit = 16384
unifiedPushTopicPrefix = "up" // Temporarily, we rate limit all "up*" topics based on the subscriber
2023-02-25 03:10:41 +01:00
unifiedPushTopicLength = 14
2022-01-16 04:33:35 +01:00
)
// WebSocket constants
const (
wsWriteWait = 2 * time.Second
wsBufferSize = 1024
wsReadLimit = 64 // We only ever receive PINGs
wsPongWait = 15 * time.Second
2021-12-14 04:30:28 +01:00
)
2021-12-07 17:45:15 +01:00
// New instantiates a new Server. It creates the cache and adds a Firebase
// subscriber (if configured).
2021-12-19 04:02:36 +01:00
func New(conf *Config) (*Server, error) {
2021-12-24 00:03:04 +01:00
var mailer mailer
2021-12-27 16:39:28 +01:00
if conf.SMTPSenderAddr != "" {
mailer = &smtpSender{config: conf}
2021-12-24 00:03:04 +01:00
}
2023-01-19 05:01:26 +01:00
var stripe stripeAPI
if conf.StripeSecretKey != "" {
stripe = newStripeAPI()
}
2022-02-27 20:47:28 +01:00
messageCache, err := createMessageCache(conf)
2021-11-02 19:08:21 +01:00
if err != nil {
return nil, err
}
2022-02-27 20:47:28 +01:00
topics, err := messageCache.Topics()
2021-11-03 02:09:49 +01:00
if err != nil {
return nil, err
2021-11-02 19:08:21 +01:00
}
var fileCache *fileCache
2022-01-02 23:56:12 +01:00
if conf.AttachmentCacheDir != "" {
2022-12-21 19:19:07 +01:00
fileCache, err = newFileCache(conf.AttachmentCacheDir, conf.AttachmentTotalSizeLimit)
if err != nil {
2022-01-02 23:56:12 +01:00
return nil, err
}
}
2022-12-28 04:14:14 +01:00
var userManager *user.Manager
2022-01-23 05:01:20 +01:00
if conf.AuthFile != "" {
2023-01-29 02:29:06 +01:00
userManager, err = user.NewManager(conf.AuthFile, conf.AuthStartupQueries, conf.AuthDefault, conf.AuthBcryptCost, conf.AuthStatsQueueWriterInterval)
2022-01-23 05:01:20 +01:00
if err != nil {
return nil, err
}
2022-01-22 20:47:27 +01:00
}
2022-06-01 05:16:44 +02:00
var firebaseClient *firebaseClient
if conf.FirebaseKeyFile != "" {
2022-06-01 05:16:44 +02:00
sender, err := newFirebaseSender(conf.FirebaseKeyFile)
if err != nil {
return nil, err
}
// This awkward logic is required because Go is weird about nil types and interfaces.
// See issue #641, and https://go.dev/play/p/uur1flrv1t3 for an example
var auther user.Auther
if userManager != nil {
auther = userManager
}
firebaseClient = newFirebaseClient(sender, auther)
}
2023-01-19 05:01:26 +01:00
s := &Server{
2022-06-01 05:16:44 +02:00
config: conf,
messageCache: messageCache,
fileCache: fileCache,
firebaseClient: firebaseClient,
2022-06-02 05:24:44 +02:00
smtpSender: mailer,
2022-06-01 05:16:44 +02:00
topics: topics,
2022-12-28 04:14:14 +01:00
userManager: userManager,
2022-12-02 21:37:48 +01:00
visitors: make(map[string]*visitor),
2023-01-19 05:01:26 +01:00
stripe: stripe,
}
s.priceCache = util.NewLookupCache(s.fetchStripePrices, conf.StripePriceCacheDuration)
return s, nil
2021-10-23 03:26:01 +02:00
}
2022-02-27 20:47:28 +01:00
func createMessageCache(conf *Config) (*messageCache, error) {
2021-12-09 16:23:17 +01:00
if conf.CacheDuration == 0 {
return newNopCache()
2021-12-09 16:23:17 +01:00
} else if conf.CacheFile != "" {
return newSqliteCache(conf.CacheFile, conf.CacheStartupQueries, conf.CacheDuration, conf.CacheBatchSize, conf.CacheBatchTimeout, false)
2021-11-02 19:08:21 +01:00
}
return newMemCache()
2021-11-02 19:08:21 +01:00
}
2021-12-07 17:45:15 +01:00
// Run executes the main server. It listens on HTTP (+ HTTPS, if configured), and starts
// a manager go routine to print stats and prune messages.
2021-10-23 03:26:01 +02:00
func (s *Server) Run() error {
2022-01-10 22:28:13 +01:00
var listenStr string
if s.config.ListenHTTP != "" {
listenStr += fmt.Sprintf(" %s[http]", s.config.ListenHTTP)
}
2021-12-02 14:52:48 +01:00
if s.config.ListenHTTPS != "" {
2022-01-10 22:28:13 +01:00
listenStr += fmt.Sprintf(" %s[https]", s.config.ListenHTTPS)
}
if s.config.ListenUnix != "" {
2022-07-04 01:33:01 +02:00
listenStr += fmt.Sprintf(" %s[unix]", s.config.ListenUnix)
2021-12-02 14:52:48 +01:00
}
2021-12-27 22:06:40 +01:00
if s.config.SMTPServerListen != "" {
2022-01-10 22:28:13 +01:00
listenStr += fmt.Sprintf(" %s[smtp]", s.config.SMTPServerListen)
2021-12-27 22:06:40 +01:00
}
2023-02-07 22:20:49 +01:00
log.Tag(tagStartup).Info("Listening on%s, ntfy %s, log level is %s", listenStr, s.config.Version, log.CurrentLevel().String())
2023-02-06 05:34:27 +01:00
if log.IsFile() {
2023-02-07 18:02:25 +01:00
fmt.Fprintf(os.Stderr, "Listening on%s, ntfy %s\n", listenStr, s.config.Version)
fmt.Fprintf(os.Stderr, "Logs are written to %s\n", log.File())
2023-02-06 05:34:27 +01:00
}
2021-12-22 23:45:19 +01:00
mux := http.NewServeMux()
mux.HandleFunc("/", s.handle)
2021-12-02 14:52:48 +01:00
errChan := make(chan error)
2021-12-22 14:17:50 +01:00
s.mu.Lock()
s.closeChan = make(chan bool)
2022-01-10 22:28:13 +01:00
if s.config.ListenHTTP != "" {
s.httpServer = &http.Server{Addr: s.config.ListenHTTP, Handler: mux}
go func() {
errChan <- s.httpServer.ListenAndServe()
}()
}
2021-12-02 14:52:48 +01:00
if s.config.ListenHTTPS != "" {
s.httpsServer = &http.Server{Addr: s.config.ListenHTTPS, Handler: mux}
2021-12-02 14:52:48 +01:00
go func() {
2021-12-22 14:17:50 +01:00
errChan <- s.httpsServer.ListenAndServeTLS(s.config.CertFile, s.config.KeyFile)
2021-12-02 14:52:48 +01:00
}()
}
2022-01-10 22:28:13 +01:00
if s.config.ListenUnix != "" {
go func() {
var err error
s.mu.Lock()
os.Remove(s.config.ListenUnix)
s.unixListener, err = net.Listen("unix", s.config.ListenUnix)
if err != nil {
2022-07-04 01:33:01 +02:00
s.mu.Unlock()
2022-01-10 22:28:13 +01:00
errChan <- err
return
}
2022-07-04 01:33:01 +02:00
defer s.unixListener.Close()
if s.config.ListenUnixMode > 0 {
if err := os.Chmod(s.config.ListenUnix, s.config.ListenUnixMode); err != nil {
s.mu.Unlock()
errChan <- err
return
}
2022-07-03 21:27:36 +02:00
}
2022-01-10 22:28:13 +01:00
s.mu.Unlock()
httpServer := &http.Server{Handler: mux}
errChan <- httpServer.Serve(s.unixListener)
}()
}
2021-12-27 16:39:28 +01:00
if s.config.SMTPServerListen != "" {
2021-12-27 15:48:09 +01:00
go func() {
2021-12-27 22:06:40 +01:00
errChan <- s.runSMTPServer()
2021-12-27 15:48:09 +01:00
}()
}
2021-12-22 14:17:50 +01:00
s.mu.Unlock()
2021-12-22 23:20:43 +01:00
go s.runManager()
2023-01-11 04:51:51 +01:00
go s.runStatsResetter()
2022-06-01 02:38:56 +02:00
go s.runDelayedSender()
2022-01-21 20:17:59 +01:00
go s.runFirebaseKeepaliver()
2021-12-27 15:48:09 +01:00
2021-12-02 14:52:48 +01:00
return <-errChan
2021-10-23 03:26:01 +02:00
}
2021-12-22 14:17:50 +01:00
// Stop stops HTTP (+HTTPS) server and all managers
func (s *Server) Stop() {
s.mu.Lock()
defer s.mu.Unlock()
if s.httpServer != nil {
s.httpServer.Close()
}
if s.httpsServer != nil {
s.httpsServer.Close()
}
2022-01-10 22:28:13 +01:00
if s.unixListener != nil {
s.unixListener.Close()
}
2021-12-27 22:06:40 +01:00
if s.smtpServer != nil {
s.smtpServer.Close()
}
2023-01-28 15:03:14 +01:00
s.closeDatabases()
2021-12-22 14:17:50 +01:00
close(s.closeChan)
}
2023-01-28 15:03:14 +01:00
func (s *Server) closeDatabases() {
if s.userManager != nil {
s.userManager.Close()
}
s.messageCache.Close()
}
2023-02-10 02:49:45 +01:00
// handle is the main entry point for all HTTP requests
2021-10-23 03:26:01 +02:00
func (s *Server) handle(w http.ResponseWriter, r *http.Request) {
2023-01-27 04:57:18 +01:00
v, err := s.maybeAuthenticate(r) // Note: Always returns v, even when error is returned
2022-12-02 21:37:48 +01:00
if err != nil {
2023-02-10 02:49:45 +01:00
s.handleError(w, r, v, err)
return
}
2023-02-15 16:55:01 +01:00
ev := logvr(v, r)
if ev.IsTrace() {
ev.Field("http_request", renderHTTPRequest(r)).Trace("HTTP request started")
} else if logvr(v, r).IsDebug() {
ev.Debug("HTTP request started")
2023-02-10 02:49:45 +01:00
}
logvr(v, r).
Timing(func() {
if err := s.handleInternal(w, r, v); err != nil {
s.handleError(w, r, v, err)
return
2022-06-01 22:57:35 +02:00
}
2023-02-10 02:49:45 +01:00
}).
Debug("HTTP request finished")
}
func (s *Server) handleError(w http.ResponseWriter, r *http.Request, v *visitor, err error) {
httpErr, ok := err.(*errHTTP)
if !ok {
httpErr = errHTTPInternalError
}
2023-02-28 03:13:15 +01:00
isRateLimiting := util.Contains(rateLimitingErrorCodes, httpErr.HTTPCode)
2023-02-25 21:31:12 +01:00
isNormalError := strings.Contains(err.Error(), "i/o timeout") || util.Contains(normalErrorCodes, httpErr.HTTPCode)
ev := logvr(v, r).Err(err)
2023-02-10 02:49:45 +01:00
if websocket.IsWebSocketUpgrade(r) {
2023-02-25 21:31:12 +01:00
ev.Tag(tagWebsocket).Fields(websocketErrorContext(err))
2022-06-01 22:57:35 +02:00
if isNormalError {
2023-02-25 21:31:12 +01:00
ev.Debug("WebSocket error (this error is okay, it happens a lot): %s", err.Error())
2022-06-01 22:57:35 +02:00
} else {
2023-02-25 21:31:12 +01:00
ev.Info("WebSocket error: %s", err.Error())
2022-06-01 22:57:35 +02:00
}
2023-02-10 02:49:45 +01:00
return // Do not attempt to write to upgraded connection
}
if isNormalError {
2023-02-25 21:31:12 +01:00
ev.Debug("Connection closed with HTTP %d (ntfy error %d)", httpErr.HTTPCode, httpErr.Code)
2023-02-10 02:49:45 +01:00
} else {
2023-02-25 21:31:12 +01:00
ev.Info("Connection closed with HTTP %d (ntfy error %d)", httpErr.HTTPCode, httpErr.Code)
2021-10-23 03:26:01 +02:00
}
2023-02-28 03:13:15 +01:00
if isRateLimiting && s.config.StripeSecretKey != "" {
u := v.User()
if u == nil || u.Tier == nil {
httpErr = httpErr.Wrap("increase your limits with a paid plan, see %s", s.config.BaseURL)
}
}
2023-02-10 02:49:45 +01:00
w.Header().Set("Content-Type", "application/json")
w.Header().Set("Access-Control-Allow-Origin", s.config.AccessControlAllowOrigin) // CORS, allow cross-origin requests
w.WriteHeader(httpErr.HTTPCode)
io.WriteString(w, httpErr.JSON()+"\n")
2021-10-23 03:26:01 +02:00
}
2022-02-14 22:09:59 +01:00
func (s *Server) handleInternal(w http.ResponseWriter, r *http.Request, v *visitor) error {
2022-05-13 20:42:25 +02:00
if r.Method == http.MethodGet && r.URL.Path == "/" {
return s.ensureWebEnabled(s.handleHome)(w, r, v)
} else if r.Method == http.MethodHead && r.URL.Path == "/" {
2022-05-13 20:42:25 +02:00
return s.ensureWebEnabled(s.handleEmpty)(w, r, v)
2023-01-17 16:09:37 +01:00
} else if r.Method == http.MethodGet && r.URL.Path == apiHealthPath {
2022-12-24 18:22:54 +01:00
return s.handleHealth(w, r, v)
2022-05-13 20:42:25 +02:00
} else if r.Method == http.MethodGet && r.URL.Path == webConfigPath {
return s.ensureWebEnabled(s.handleWebConfig)(w, r, v)
2023-01-17 16:09:37 +01:00
} else if r.Method == http.MethodPost && r.URL.Path == apiAccountPath {
return s.ensureUserManager(s.handleAccountCreate)(w, r, v)
2023-01-17 16:09:37 +01:00
} else if r.Method == http.MethodGet && r.URL.Path == apiAccountPath {
2022-12-28 04:14:14 +01:00
return s.handleAccountGet(w, r, v) // Allowed by anonymous
2023-01-17 16:09:37 +01:00
} else if r.Method == http.MethodDelete && r.URL.Path == apiAccountPath {
return s.ensureUser(s.withAccountSync(s.handleAccountDelete))(w, r, v)
2023-01-17 16:09:37 +01:00
} else if r.Method == http.MethodPost && r.URL.Path == apiAccountPasswordPath {
return s.ensureUser(s.handleAccountPasswordChange)(w, r, v)
2023-01-28 05:10:59 +01:00
} else if r.Method == http.MethodPost && r.URL.Path == apiAccountTokenPath {
return s.ensureUser(s.withAccountSync(s.handleAccountTokenCreate))(w, r, v)
2023-01-17 16:09:37 +01:00
} else if r.Method == http.MethodPatch && r.URL.Path == apiAccountTokenPath {
2023-01-28 05:10:59 +01:00
return s.ensureUser(s.withAccountSync(s.handleAccountTokenUpdate))(w, r, v)
2023-01-17 16:09:37 +01:00
} else if r.Method == http.MethodDelete && r.URL.Path == apiAccountTokenPath {
2023-01-28 05:10:59 +01:00
return s.ensureUser(s.withAccountSync(s.handleAccountTokenDelete))(w, r, v)
2023-01-17 16:09:37 +01:00
} else if r.Method == http.MethodPatch && r.URL.Path == apiAccountSettingsPath {
return s.ensureUser(s.withAccountSync(s.handleAccountSettingsChange))(w, r, v)
2023-01-17 16:09:37 +01:00
} else if r.Method == http.MethodPost && r.URL.Path == apiAccountSubscriptionPath {
return s.ensureUser(s.withAccountSync(s.handleAccountSubscriptionAdd))(w, r, v)
2023-02-12 20:09:44 +01:00
} else if r.Method == http.MethodPatch && r.URL.Path == apiAccountSubscriptionPath {
return s.ensureUser(s.withAccountSync(s.handleAccountSubscriptionChange))(w, r, v)
2023-02-12 20:09:44 +01:00
} else if r.Method == http.MethodDelete && r.URL.Path == apiAccountSubscriptionPath {
return s.ensureUser(s.withAccountSync(s.handleAccountSubscriptionDelete))(w, r, v)
2023-01-17 16:09:37 +01:00
} else if r.Method == http.MethodPost && r.URL.Path == apiAccountReservationPath {
return s.ensureUser(s.withAccountSync(s.handleAccountReservationAdd))(w, r, v)
2023-01-17 16:09:37 +01:00
} else if r.Method == http.MethodDelete && apiAccountReservationSingleRegex.MatchString(r.URL.Path) {
return s.ensureUser(s.withAccountSync(s.handleAccountReservationDelete))(w, r, v)
2023-01-17 16:09:37 +01:00
} else if r.Method == http.MethodPost && r.URL.Path == apiAccountBillingSubscriptionPath {
return s.ensurePaymentsEnabled(s.ensureUser(s.handleAccountBillingSubscriptionCreate))(w, r, v) // Account sync via incoming Stripe webhook
2023-01-17 16:09:37 +01:00
} else if r.Method == http.MethodGet && apiAccountBillingSubscriptionCheckoutSuccessRegex.MatchString(r.URL.Path) {
return s.ensurePaymentsEnabled(s.ensureUserManager(s.handleAccountBillingSubscriptionCreateSuccess))(w, r, v) // No user context!
2023-01-17 16:09:37 +01:00
} else if r.Method == http.MethodPut && r.URL.Path == apiAccountBillingSubscriptionPath {
return s.ensurePaymentsEnabled(s.ensureStripeCustomer(s.handleAccountBillingSubscriptionUpdate))(w, r, v) // Account sync via incoming Stripe webhook
2023-01-17 16:09:37 +01:00
} else if r.Method == http.MethodDelete && r.URL.Path == apiAccountBillingSubscriptionPath {
return s.ensurePaymentsEnabled(s.ensureStripeCustomer(s.handleAccountBillingSubscriptionDelete))(w, r, v) // Account sync via incoming Stripe webhook
2023-01-17 16:09:37 +01:00
} else if r.Method == http.MethodPost && r.URL.Path == apiAccountBillingPortalPath {
return s.ensurePaymentsEnabled(s.ensureStripeCustomer(s.handleAccountBillingPortalSessionCreate))(w, r, v)
2023-01-17 16:09:37 +01:00
} else if r.Method == http.MethodPost && r.URL.Path == apiAccountBillingWebhookPath {
return s.ensurePaymentsEnabled(s.ensureUserManager(s.handleAccountBillingWebhook))(w, r, v) // This request comes from Stripe!
} else if r.Method == http.MethodGet && r.URL.Path == apiTiers {
return s.ensurePaymentsEnabled(s.handleBillingTiersGet)(w, r, v)
2022-06-15 22:03:12 +02:00
} else if r.Method == http.MethodGet && r.URL.Path == matrixPushPath {
return s.handleMatrixDiscovery(w)
2022-05-13 20:42:25 +02:00
} else if r.Method == http.MethodGet && staticRegex.MatchString(r.URL.Path) {
return s.ensureWebEnabled(s.handleStatic)(w, r, v)
} else if r.Method == http.MethodGet && docsRegex.MatchString(r.URL.Path) {
return s.ensureWebEnabled(s.handleDocs)(w, r, v)
} else if (r.Method == http.MethodGet || r.Method == http.MethodHead) && fileRegex.MatchString(r.URL.Path) && s.config.AttachmentCacheDir != "" {
2022-01-22 04:22:27 +01:00
return s.limitRequests(s.handleFile)(w, r, v)
} else if r.Method == http.MethodOptions {
2023-02-03 01:07:16 +01:00
return s.limitRequests(s.handleOptions)(w, r, v) // Should work even if the web app is not enabled, see #598
2022-03-16 19:16:54 +01:00
} else if (r.Method == http.MethodPut || r.Method == http.MethodPost) && r.URL.Path == "/" {
2023-02-22 05:40:15 +01:00
return s.transformBodyJSON(s.limitRequestsWithTopic(s.authorizeTopicWrite(s.handlePublish)))(w, r, v)
2022-06-14 04:07:30 +02:00
} else if r.Method == http.MethodPost && r.URL.Path == matrixPushPath {
2023-02-22 05:40:15 +01:00
return s.transformMatrixJSON(s.limitRequestsWithTopic(s.authorizeTopicWrite(s.handlePublishMatrix)))(w, r, v)
2021-12-27 22:06:40 +01:00
} else if (r.Method == http.MethodPut || r.Method == http.MethodPost) && topicPathRegex.MatchString(r.URL.Path) {
2023-02-22 05:40:15 +01:00
return s.limitRequestsWithTopic(s.authorizeTopicWrite(s.handlePublish))(w, r, v)
2021-12-27 22:06:40 +01:00
} else if r.Method == http.MethodGet && publishPathRegex.MatchString(r.URL.Path) {
2023-02-22 05:40:15 +01:00
return s.limitRequestsWithTopic(s.authorizeTopicWrite(s.handlePublish))(w, r, v)
2021-12-27 22:06:40 +01:00
} else if r.Method == http.MethodGet && jsonPathRegex.MatchString(r.URL.Path) {
2022-12-03 21:20:59 +01:00
return s.limitRequests(s.authorizeTopicRead(s.handleSubscribeJSON))(w, r, v)
2021-12-27 22:06:40 +01:00
} else if r.Method == http.MethodGet && ssePathRegex.MatchString(r.URL.Path) {
2022-12-03 21:20:59 +01:00
return s.limitRequests(s.authorizeTopicRead(s.handleSubscribeSSE))(w, r, v)
2021-12-27 22:06:40 +01:00
} else if r.Method == http.MethodGet && rawPathRegex.MatchString(r.URL.Path) {
2022-12-03 21:20:59 +01:00
return s.limitRequests(s.authorizeTopicRead(s.handleSubscribeRaw))(w, r, v)
2022-01-15 19:23:35 +01:00
} else if r.Method == http.MethodGet && wsPathRegex.MatchString(r.URL.Path) {
2022-12-03 21:20:59 +01:00
return s.limitRequests(s.authorizeTopicRead(s.handleSubscribeWS))(w, r, v)
2022-01-26 05:04:09 +01:00
} else if r.Method == http.MethodGet && authPathRegex.MatchString(r.URL.Path) {
2022-12-03 21:20:59 +01:00
return s.limitRequests(s.authorizeTopicRead(s.handleTopicAuth))(w, r, v)
} else if r.Method == http.MethodGet && (topicPathRegex.MatchString(r.URL.Path) || externalTopicPathRegex.MatchString(r.URL.Path)) {
2022-05-13 20:42:25 +02:00
return s.ensureWebEnabled(s.handleTopic)(w, r, v)
2021-10-23 03:26:01 +02:00
}
2021-10-24 04:49:50 +02:00
return errHTTPNotFound
2021-10-23 03:26:01 +02:00
}
2022-05-13 20:42:25 +02:00
func (s *Server) handleHome(w http.ResponseWriter, r *http.Request, v *visitor) error {
2022-03-06 03:28:25 +01:00
if s.config.WebRootIsApp {
r.URL.Path = webAppIndex
} else {
r.URL.Path = webHomeIndex
}
2022-05-13 20:42:25 +02:00
return s.handleStatic(w, r, v)
2021-10-23 03:26:01 +02:00
}
2022-05-13 20:42:25 +02:00
func (s *Server) handleTopic(w http.ResponseWriter, r *http.Request, v *visitor) error {
2022-01-16 05:17:46 +01:00
unifiedpush := readBoolParam(r, false, "x-unifiedpush", "unifiedpush", "up") // see PUT/POST too!
2021-12-25 22:07:55 +01:00
if unifiedpush {
w.Header().Set("Content-Type", "application/json")
w.Header().Set("Access-Control-Allow-Origin", s.config.AccessControlAllowOrigin) // CORS, allow cross-origin requests
2021-12-25 22:07:55 +01:00
_, err := io.WriteString(w, `{"unifiedpush":{"version":1}}`+"\n")
return err
}
2022-03-06 02:24:10 +01:00
r.URL.Path = webAppIndex
2022-05-13 20:42:25 +02:00
return s.handleStatic(w, r, v)
2021-12-25 22:07:55 +01:00
}
2022-01-26 05:04:09 +01:00
func (s *Server) handleEmpty(_ http.ResponseWriter, _ *http.Request, _ *visitor) error {
return nil
}
2022-01-26 05:04:09 +01:00
func (s *Server) handleTopicAuth(w http.ResponseWriter, _ *http.Request, _ *visitor) error {
2023-01-18 21:50:06 +01:00
return s.writeJSON(w, newSuccessResponse())
2022-01-26 05:04:09 +01:00
}
2022-12-24 18:22:54 +01:00
func (s *Server) handleHealth(w http.ResponseWriter, _ *http.Request, _ *visitor) error {
response := &apiHealthResponse{
Healthy: true,
}
2023-01-18 21:50:06 +01:00
return s.writeJSON(w, response)
2022-12-24 18:22:54 +01:00
}
2022-05-13 20:42:25 +02:00
func (s *Server) handleWebConfig(w http.ResponseWriter, _ *http.Request, _ *visitor) error {
appRoot := "/"
if !s.config.WebRootIsApp {
appRoot = "/app"
}
2023-01-05 02:34:22 +01:00
response := &apiConfigResponse{
2023-01-11 04:51:51 +01:00
BaseURL: "", // Will translate to window.location.origin
AppRoot: appRoot,
EnableLogin: s.config.EnableLogin,
EnableSignup: s.config.EnableSignup,
EnablePayments: s.config.StripeSecretKey != "",
2023-01-11 04:51:51 +01:00
EnableReservations: s.config.EnableReservations,
2023-02-28 20:38:31 +01:00
BillingContact: s.config.BillingContact,
2023-02-09 14:32:51 +01:00
DisallowedTopics: s.config.DisallowedTopics,
2023-01-05 02:34:22 +01:00
}
2023-01-10 02:37:13 +01:00
b, err := json.MarshalIndent(response, "", " ")
2023-01-05 02:34:22 +01:00
if err != nil {
return err
}
2022-03-11 21:56:54 +01:00
w.Header().Set("Content-Type", "text/javascript")
2023-01-05 02:34:22 +01:00
_, err = io.WriteString(w, fmt.Sprintf("// Generated server configuration\nvar config = %s;\n", string(b)))
return err
}
2022-05-13 20:42:25 +02:00
func (s *Server) handleStatic(w http.ResponseWriter, r *http.Request, _ *visitor) error {
2022-03-06 02:24:10 +01:00
r.URL.Path = webSiteDir + r.URL.Path
2022-03-11 03:55:56 +01:00
util.Gzip(http.FileServer(http.FS(webFsCached))).ServeHTTP(w, r)
2021-10-29 19:58:14 +02:00
return nil
}
2022-05-13 20:42:25 +02:00
func (s *Server) handleDocs(w http.ResponseWriter, r *http.Request, _ *visitor) error {
2022-03-11 03:55:56 +01:00
util.Gzip(http.FileServer(http.FS(docsStaticCached))).ServeHTTP(w, r)
2021-12-02 23:27:31 +01:00
return nil
}
2023-01-29 21:11:26 +01:00
// handleFile processes the download of attachment files. The method handles GET and HEAD requests against a file.
// Before streaming the file to a client, it locates uploader (m.Sender or m.User) in the message cache, so it
// can associate the download bandwidth with the uploader.
2022-01-13 00:52:07 +01:00
func (s *Server) handleFile(w http.ResponseWriter, r *http.Request, v *visitor) error {
2022-01-02 23:56:12 +01:00
if s.config.AttachmentCacheDir == "" {
2022-01-04 00:55:08 +01:00
return errHTTPInternalError
2022-01-02 23:56:12 +01:00
}
matches := fileRegex.FindStringSubmatch(r.URL.Path)
if len(matches) != 2 {
2022-12-29 15:57:42 +01:00
return errHTTPInternalErrorInvalidPath
2022-01-02 23:56:12 +01:00
}
messageID := matches[1]
file := filepath.Join(s.config.AttachmentCacheDir, messageID)
stat, err := os.Stat(file)
if err != nil {
2023-02-28 03:13:15 +01:00
return errHTTPNotFound.Fields(log.Context{
"message_id": messageID,
"error_context": "filesystem",
})
2022-01-02 23:56:12 +01:00
}
w.Header().Set("Access-Control-Allow-Origin", s.config.AccessControlAllowOrigin) // CORS, allow cross-origin requests
2023-01-29 21:11:26 +01:00
w.Header().Set("Content-Length", fmt.Sprintf("%d", stat.Size()))
if r.Method == http.MethodHead {
return nil
}
// Find message in database, and associate bandwidth to the uploader user
// This is an easy way to
// - avoid abuse (e.g. 1 uploader, 1k downloaders)
// - and also uses the higher bandwidth limits of a paying user
m, err := s.messageCache.Message(messageID)
if err == errMessageNotFound {
if s.config.CacheBatchTimeout > 0 {
// Strange edge case: If we immediately after upload request the file (the web app does this for images),
// and messages are persisted asynchronously, retry fetching from the database
m, err = util.Retry(func() (*message, error) {
return s.messageCache.Message(messageID)
}, s.config.CacheBatchTimeout, 100*time.Millisecond, 300*time.Millisecond, 600*time.Millisecond)
}
if err != nil {
2023-02-28 03:13:15 +01:00
return errHTTPNotFound.Fields(log.Context{
"message_id": messageID,
"error_context": "message_cache",
})
}
2023-01-29 21:11:26 +01:00
} else if err != nil {
return err
}
bandwidthVisitor := v
if s.userManager != nil && m.User != "" {
u, err := s.userManager.UserByID(m.User)
if err != nil {
return err
}
2023-01-29 21:11:26 +01:00
bandwidthVisitor = s.visitor(v.IP(), u)
2023-02-08 04:10:51 +01:00
} else if m.Sender.IsValid() {
2023-01-29 21:11:26 +01:00
bandwidthVisitor = s.visitor(m.Sender, nil)
}
if !bandwidthVisitor.BandwidthAllowed(stat.Size()) {
2023-02-28 03:13:15 +01:00
return errHTTPTooManyRequestsLimitAttachmentBandwidth.With(m)
2023-01-29 21:11:26 +01:00
}
// Actually send file
f, err := os.Open(file)
if err != nil {
2022-01-02 23:56:12 +01:00
return err
}
2023-01-29 21:11:26 +01:00
defer f.Close()
_, err = io.Copy(util.NewContentTypeWriter(w, r.URL.Path), f)
return err
2022-01-02 23:56:12 +01:00
}
2022-06-15 22:03:12 +02:00
func (s *Server) handleMatrixDiscovery(w http.ResponseWriter) error {
if s.config.BaseURL == "" {
return errHTTPInternalErrorMissingBaseURL
}
2022-06-16 17:40:56 +02:00
return writeMatrixDiscoveryResponse(w)
2022-06-15 22:03:12 +02:00
}
2023-03-04 04:22:07 +01:00
func (s *Server) handlePublishInternal(r *http.Request, v *visitor) (*message, error) {
t := fromContext[*topic](r, contextTopic)
vrate := fromContext[*visitor](r, contextRateVisitor)
2022-04-03 18:39:52 +02:00
body, err := util.Peek(r.Body, s.config.MessageLimit)
2021-10-23 03:26:01 +02:00
if err != nil {
2022-06-15 02:43:17 +02:00
return nil, err
2021-10-23 03:26:01 +02:00
}
2022-01-02 23:56:12 +01:00
m := newDefaultMessage(t.ID, "")
cache, firebase, email, unifiedpush, e := s.parsePublishParams(r, m)
if e != nil {
return nil, e.With(t)
2021-10-29 05:50:38 +02:00
}
2023-03-04 02:23:18 +01:00
if unifiedpush && s.config.VisitorSubscriberRateLimiting && t.RateVisitor() == nil {
// UnifiedPush clients must subscribe before publishing to allow proper subscriber-based rate limiting (see
// Rate-Topics header). The 5xx response is because some app servers (in particular Mastodon) will remove
// the subscription as invalid if any 400-499 code (except 429/408) is returned.
// See https://github.com/mastodon/mastodon/blob/730bb3e211a84a2f30e3e2bbeae3f77149824a68/app/workers/web/push_notification_worker.rb#L35-L46
2023-03-01 04:25:13 +01:00
return nil, errHTTPInsufficientStorageUnifiedPush.With(t)
} else if !util.ContainsIP(s.config.VisitorRequestExemptIPAddrs, v.ip) && !vrate.MessageAllowed() {
2023-02-26 02:23:22 +01:00
return nil, errHTTPTooManyRequestsLimitMessages.With(t)
2023-02-25 03:10:41 +01:00
} else if email != "" && !vrate.EmailAllowed() {
2023-02-26 02:23:22 +01:00
return nil, errHTTPTooManyRequestsLimitEmails.With(t)
2023-02-24 02:46:53 +01:00
}
2022-05-27 13:55:57 +02:00
if m.PollID != "" {
m = newPollRequestMessage(t.ID, m.PollID)
}
2023-02-08 04:10:51 +01:00
m.Sender = v.IP()
m.User = v.MaybeUserID()
if cache {
m.Expires = time.Unix(m.Time, 0).Add(v.Limits().MessageExpiryDuration).Unix()
}
2022-01-17 19:28:07 +01:00
if err := s.handlePublishBody(r, v, m, body, unifiedpush); err != nil {
2022-06-15 02:43:17 +02:00
return nil, err
2021-12-24 00:03:04 +01:00
}
2021-12-15 15:41:55 +01:00
if m.Message == "" {
2021-12-24 00:03:04 +01:00
m.Message = emptyMessageBody
2021-12-15 15:41:55 +01:00
}
delayed := m.Time > time.Now().Unix()
2023-02-24 02:46:53 +01:00
ev := logvrm(v, r, m).
2023-02-04 04:21:50 +01:00
Tag(tagPublish).
2023-02-26 02:23:22 +01:00
With(t).
2023-02-06 05:34:27 +01:00
Fields(log.Context{
"message_delayed": delayed,
"message_firebase": firebase,
"message_unifiedpush": unifiedpush,
"message_email": email,
2023-02-13 19:20:05 +01:00
})
if ev.IsTrace() {
ev.Field("message_body", util.MaybeMarshalJSON(m)).Trace("Received message")
} else if ev.IsDebug() {
ev.Debug("Received message")
2022-06-02 05:24:44 +02:00
}
if !delayed {
2022-06-01 02:38:56 +02:00
if err := t.Publish(v, m); err != nil {
2022-06-15 02:43:17 +02:00
return nil, err
}
2022-06-01 22:57:35 +02:00
if s.firebaseClient != nil && firebase {
2023-02-24 02:46:53 +01:00
go s.sendToFirebase(v, m)
2022-06-01 22:57:35 +02:00
}
2022-06-02 05:24:44 +02:00
if s.smtpSender != nil && email != "" {
2022-06-01 22:57:35 +02:00
go s.sendEmail(v, m, email)
}
if s.config.UpstreamBaseURL != "" {
go s.forwardPollRequest(v, m)
}
} else {
2023-02-04 04:21:50 +01:00
logvrm(v, r, m).Tag(tagPublish).Debug("Message delayed, will process later")
2022-05-27 13:55:57 +02:00
}
2021-12-09 16:23:17 +01:00
if cache {
2023-02-04 04:21:50 +01:00
logvrm(v, r, m).Tag(tagPublish).Debug("Adding message to cache")
2022-11-16 16:28:20 +01:00
if err := s.messageCache.AddMessage(m); err != nil {
2022-06-15 02:43:17 +02:00
return nil, err
2022-11-16 16:28:20 +01:00
}
2021-11-02 19:08:21 +01:00
}
u := v.User()
if s.userManager != nil && u != nil && u.Tier != nil {
2023-02-09 21:24:12 +01:00
go s.userManager.EnqueueUserStats(u.ID, v.Stats())
}
2022-06-15 02:43:17 +02:00
s.mu.Lock()
s.messages++
s.mu.Unlock()
return m, nil
}
func (s *Server) handlePublish(w http.ResponseWriter, r *http.Request, v *visitor) error {
2023-03-04 04:22:07 +01:00
m, err := s.handlePublishInternal(r, v)
2022-06-15 02:43:17 +02:00
if err != nil {
return err
}
2023-01-18 21:50:06 +01:00
return s.writeJSON(w, m)
2022-06-15 02:43:17 +02:00
}
func (s *Server) handlePublishMatrix(w http.ResponseWriter, r *http.Request, v *visitor) error {
2023-03-04 04:22:07 +01:00
_, err := s.handlePublishInternal(r, v)
2022-06-15 02:43:17 +02:00
if err != nil {
2023-03-01 04:25:13 +01:00
if e, ok := err.(*errHTTP); ok && e.HTTPCode == errHTTPInsufficientStorageUnifiedPush.HTTPCode {
2023-03-04 04:22:07 +01:00
topic := fromContext[*topic](r, contextTopic)
pushKey := fromContext[string](r, contextMatrixPushKey)
if time.Since(topic.LastAccess()) > matrixRejectPushKeyForUnifiedPushTopicWithoutRateVisitorAfter {
return writeMatrixResponse(w, pushKey)
}
2023-03-01 04:25:13 +01:00
}
2023-02-25 06:56:57 +01:00
return err
2022-06-15 02:43:17 +02:00
}
2022-06-15 22:03:12 +02:00
return writeMatrixSuccess(w)
2021-10-23 03:26:01 +02:00
}
2022-05-28 02:30:20 +02:00
func (s *Server) sendToFirebase(v *visitor, m *message) {
2023-02-04 04:21:50 +01:00
logvm(v, m).Tag(tagFirebase).Debug("Publishing to Firebase")
2022-06-01 05:16:44 +02:00
if err := s.firebaseClient.Send(v, m); err != nil {
if err == errFirebaseTemporarilyBanned {
2023-02-04 04:21:50 +01:00
logvm(v, m).Tag(tagFirebase).Err(err).Debug("Unable to publish to Firebase: %v", err.Error())
} else {
2023-02-04 04:21:50 +01:00
logvm(v, m).Tag(tagFirebase).Err(err).Warn("Unable to publish to Firebase: %v", err.Error())
}
2022-05-28 02:30:20 +02:00
}
}
func (s *Server) sendEmail(v *visitor, m *message, email string) {
2023-02-04 04:21:50 +01:00
logvm(v, m).Tag(tagEmail).Field("email", email).Debug("Sending email to %s", email)
2022-06-02 05:24:44 +02:00
if err := s.smtpSender.Send(v, m, email); err != nil {
2023-02-04 04:21:50 +01:00
logvm(v, m).Tag(tagEmail).Field("email", email).Err(err).Warn("Unable to send email to %s: %v", email, err.Error())
2022-05-28 02:30:20 +02:00
}
}
func (s *Server) forwardPollRequest(v *visitor, m *message) {
topicURL := fmt.Sprintf("%s/%s", s.config.BaseURL, m.Topic)
topicHash := fmt.Sprintf("%x", sha256.Sum256([]byte(topicURL)))
forwardURL := fmt.Sprintf("%s/%s", s.config.UpstreamBaseURL, topicHash)
2023-02-04 04:21:50 +01:00
logvm(v, m).Debug("Publishing poll request to %s", forwardURL)
2022-05-28 02:30:20 +02:00
req, err := http.NewRequest("POST", forwardURL, strings.NewReader(""))
if err != nil {
2023-02-04 04:21:50 +01:00
logvm(v, m).Err(err).Warn("Unable to publish poll request")
2022-05-28 02:30:20 +02:00
return
}
req.Header.Set("X-Poll-ID", m.ID)
var httpClient = &http.Client{
Timeout: time.Second * 10,
}
response, err := httpClient.Do(req)
2022-05-28 02:30:20 +02:00
if err != nil {
2023-02-04 04:21:50 +01:00
logvm(v, m).Err(err).Warn("Unable to publish poll request")
2022-05-28 02:30:20 +02:00
return
} else if response.StatusCode != http.StatusOK {
2023-02-05 03:26:01 +01:00
logvm(v, m).Err(err).Warn("Unable to publish poll request, unexpected HTTP status: %d", response.StatusCode)
2022-05-28 02:30:20 +02:00
return
}
}
func (s *Server) parsePublishParams(r *http.Request, m *message) (cache bool, firebase bool, email string, unifiedpush bool, err *errHTTP) {
2022-01-16 05:17:46 +01:00
cache = readBoolParam(r, true, "x-cache", "cache")
firebase = readBoolParam(r, true, "x-firebase", "firebase")
2021-12-22 09:44:16 +01:00
m.Title = readParam(r, "x-title", "title", "t")
2022-01-04 23:40:41 +01:00
m.Click = readParam(r, "x-click", "click")
2022-07-17 23:47:21 +02:00
icon := readParam(r, "x-icon", "icon")
filename := readParam(r, "x-filename", "filename", "file", "f")
2022-01-14 18:13:14 +01:00
attach := readParam(r, "x-attach", "attach", "a")
if attach != "" || filename != "" {
m.Attachment = &attachment{}
}
2022-01-14 18:13:14 +01:00
if filename != "" {
m.Attachment.Name = filename
}
if attach != "" {
2022-07-17 23:47:21 +02:00
if !urlRegex.MatchString(attach) {
2022-01-17 19:28:07 +01:00
return false, false, "", false, errHTTPBadRequestAttachmentURLInvalid
}
m.Attachment.URL = attach
2022-01-14 18:13:14 +01:00
if m.Attachment.Name == "" {
u, err := url.Parse(m.Attachment.URL)
if err == nil {
m.Attachment.Name = path.Base(u.Path)
if m.Attachment.Name == "." || m.Attachment.Name == "/" {
m.Attachment.Name = ""
}
}
}
if m.Attachment.Name == "" {
m.Attachment.Name = "attachment"
}
}
2022-07-17 23:47:21 +02:00
if icon != "" {
if !urlRegex.MatchString(icon) {
return false, false, "", false, errHTTPBadRequestIconURLInvalid
}
m.Icon = icon
}
email = readParam(r, "x-email", "x-e-mail", "email", "e-mail", "mail", "e")
2022-06-02 05:24:44 +02:00
if s.smtpSender == nil && email != "" {
2022-01-17 19:28:07 +01:00
return false, false, "", false, errHTTPBadRequestEmailDisabled
}
messageStr := strings.ReplaceAll(readParam(r, "x-message", "message", "m"), "\\n", "\n")
2021-12-15 15:41:55 +01:00
if messageStr != "" {
m.Message = messageStr
}
var e error
m.Priority, e = util.ParsePriority(readParam(r, "x-priority", "priority", "prio", "p"))
if e != nil {
2022-01-17 19:28:07 +01:00
return false, false, "", false, errHTTPBadRequestPriorityInvalid
2021-11-27 22:12:08 +01:00
}
2023-02-23 03:33:18 +01:00
m.Tags = readCommaSeparatedParam(r, "x-tags", "tags", "tag", "ta")
2021-12-15 15:41:55 +01:00
delayStr := readParam(r, "x-delay", "delay", "x-at", "at", "x-in", "in")
2021-12-11 06:06:25 +01:00
if delayStr != "" {
if !cache {
2022-01-17 19:28:07 +01:00
return false, false, "", false, errHTTPBadRequestDelayNoCache
}
2021-12-24 00:03:04 +01:00
if email != "" {
2022-01-17 19:28:07 +01:00
return false, false, "", false, errHTTPBadRequestDelayNoEmail // we cannot store the email address (yet)
2021-12-24 00:03:04 +01:00
}
2021-12-11 06:06:25 +01:00
delay, err := util.ParseFutureTime(delayStr, time.Now())
if err != nil {
2022-01-17 19:28:07 +01:00
return false, false, "", false, errHTTPBadRequestDelayCannotParse
2021-12-11 06:06:25 +01:00
} else if delay.Unix() < time.Now().Add(s.config.MinDelay).Unix() {
2022-01-17 19:28:07 +01:00
return false, false, "", false, errHTTPBadRequestDelayTooSmall
2021-12-11 06:06:25 +01:00
} else if delay.Unix() > time.Now().Add(s.config.MaxDelay).Unix() {
2022-01-17 19:28:07 +01:00
return false, false, "", false, errHTTPBadRequestDelayTooLarge
}
2021-12-11 06:06:25 +01:00
m.Time = delay.Unix()
}
2022-04-16 22:17:58 +02:00
actionsStr := readParam(r, "x-actions", "actions", "action")
if actionsStr != "" {
m.Actions, e = parseActions(actionsStr)
if e != nil {
return false, false, "", false, errHTTPBadRequestActionsInvalid.Wrap(e.Error())
2022-04-17 20:29:43 +02:00
}
2022-04-16 22:17:58 +02:00
}
2022-01-17 19:28:07 +01:00
unifiedpush = readBoolParam(r, false, "x-unifiedpush", "unifiedpush", "up") // see GET too!
2021-12-25 22:07:55 +01:00
if unifiedpush {
firebase = false
2022-01-17 19:28:07 +01:00
unifiedpush = true
2021-12-25 22:07:55 +01:00
}
2022-05-29 04:06:46 +02:00
m.PollID = readParam(r, "x-poll-id", "poll-id")
2022-05-27 13:55:57 +02:00
if m.PollID != "" {
unifiedpush = false
cache = false
email = ""
}
2022-01-17 19:28:07 +01:00
return cache, firebase, email, unifiedpush, nil
2021-11-27 22:12:08 +01:00
}
// handlePublishBody consumes the PUT/POST body and decides whether the body is an attachment or the message.
//
2022-09-27 18:37:02 +02:00
// 1. curl -X POST -H "Poll: 1234" ntfy.sh/...
// If a message is flagged as poll request, the body does not matter and is discarded
// 2. curl -T somebinarydata.bin "ntfy.sh/mytopic?up=1"
// If body is binary, encode as base64, if not do not encode
// 3. curl -H "Attach: http://example.com/file.jpg" ntfy.sh/mytopic
// Body must be a message, because we attached an external URL
// 4. curl -T short.txt -H "Filename: short.txt" ntfy.sh/mytopic
// Body must be attachment, because we passed a filename
// 5. curl -T file.txt ntfy.sh/mytopic
// If file.txt is <= 4096 (message limit) and valid UTF-8, treat it as a message
// 6. curl -T file.txt ntfy.sh/mytopic
// If file.txt is > message limit, treat it as an attachment
2022-04-03 18:39:52 +02:00
func (s *Server) handlePublishBody(r *http.Request, v *visitor, m *message, body *util.PeekedReadCloser, unifiedpush bool) error {
2022-05-28 02:30:20 +02:00
if m.Event == pollRequestEvent { // Case 1
2022-06-02 05:24:44 +02:00
return s.handleBodyDiscard(body)
2022-05-27 13:55:57 +02:00
} else if unifiedpush {
2022-05-28 02:30:20 +02:00
return s.handleBodyAsMessageAutoDetect(m, body) // Case 2
2022-01-17 19:28:07 +01:00
} else if m.Attachment != nil && m.Attachment.URL != "" {
2022-05-28 02:30:20 +02:00
return s.handleBodyAsTextMessage(m, body) // Case 3
} else if m.Attachment != nil && m.Attachment.Name != "" {
2022-05-28 02:30:20 +02:00
return s.handleBodyAsAttachment(r, v, m, body) // Case 4
2022-04-03 18:39:52 +02:00
} else if !body.LimitReached && utf8.Valid(body.PeekedBytes) {
2022-05-28 02:30:20 +02:00
return s.handleBodyAsTextMessage(m, body) // Case 5
}
2022-05-28 02:30:20 +02:00
return s.handleBodyAsAttachment(r, v, m, body) // Case 6
2022-01-17 19:28:07 +01:00
}
2022-06-02 05:24:44 +02:00
func (s *Server) handleBodyDiscard(body *util.PeekedReadCloser) error {
_, err := io.Copy(io.Discard, body)
_ = body.Close()
return err
}
2022-04-03 18:39:52 +02:00
func (s *Server) handleBodyAsMessageAutoDetect(m *message, body *util.PeekedReadCloser) error {
if utf8.Valid(body.PeekedBytes) {
m.Message = string(body.PeekedBytes) // Do not trim
2022-01-17 19:28:07 +01:00
} else {
2022-04-03 18:39:52 +02:00
m.Message = base64.StdEncoding.EncodeToString(body.PeekedBytes)
2022-01-17 19:28:07 +01:00
m.Encoding = encodingBase64
}
return nil
}
2022-04-03 18:39:52 +02:00
func (s *Server) handleBodyAsTextMessage(m *message, body *util.PeekedReadCloser) error {
if !utf8.Valid(body.PeekedBytes) {
2023-02-26 02:23:22 +01:00
return errHTTPBadRequestMessageNotUTF8.With(m)
}
2022-04-03 18:39:52 +02:00
if len(body.PeekedBytes) > 0 { // Empty body should not override message (publish via GET!)
m.Message = strings.TrimSpace(string(body.PeekedBytes)) // Truncates the message to the peek limit if required
}
2022-01-10 19:38:51 +01:00
if m.Attachment != nil && m.Attachment.Name != "" && m.Message == "" {
m.Message = fmt.Sprintf(defaultAttachmentMessage, m.Attachment.Name)
}
return nil
}
2022-04-03 18:39:52 +02:00
func (s *Server) handleBodyAsAttachment(r *http.Request, v *visitor, m *message, body *util.PeekedReadCloser) error {
2022-01-12 17:05:04 +01:00
if s.fileCache == nil || s.config.BaseURL == "" || s.config.AttachmentCacheDir == "" {
2023-02-26 02:23:22 +01:00
return errHTTPBadRequestAttachmentsDisallowed.With(m)
}
2023-01-09 21:40:46 +01:00
vinfo, err := v.Info()
if err != nil {
return err
}
2023-01-09 21:40:46 +01:00
attachmentExpiry := time.Now().Add(vinfo.Limits.AttachmentExpiryDuration).Unix()
if m.Time > attachmentExpiry {
2023-02-28 03:13:15 +01:00
return errHTTPBadRequestAttachmentsExpiryBeforeDelivery.With(m)
}
2022-01-11 18:58:11 +01:00
contentLengthStr := r.Header.Get("Content-Length")
if contentLengthStr != "" { // Early "do-not-trust" check, hard limit see below
contentLength, err := strconv.ParseInt(contentLengthStr, 10, 64)
2023-01-09 21:40:46 +01:00
if err == nil && (contentLength > vinfo.Stats.AttachmentTotalSizeRemaining || contentLength > vinfo.Limits.AttachmentFileSizeLimit) {
2023-02-28 03:13:15 +01:00
return errHTTPEntityTooLargeAttachment.With(m).Fields(log.Context{
"message_content_length": contentLength,
"attachment_total_size_remaining": vinfo.Stats.AttachmentTotalSizeRemaining,
"attachment_file_size_limit": vinfo.Limits.AttachmentFileSizeLimit,
})
2022-01-11 18:58:11 +01:00
}
}
if m.Attachment == nil {
m.Attachment = &attachment{}
}
2022-01-10 19:38:51 +01:00
var ext string
m.Attachment.Expires = attachmentExpiry
2022-04-03 18:39:52 +02:00
m.Attachment.Type, ext = util.DetectContentType(body.PeekedBytes, m.Attachment.Name)
m.Attachment.URL = fmt.Sprintf("%s/file/%s%s", s.config.BaseURL, m.ID, ext)
if m.Attachment.Name == "" {
m.Attachment.Name = fmt.Sprintf("attachment%s", ext)
}
if m.Message == "" {
2022-01-10 19:38:51 +01:00
m.Message = fmt.Sprintf(defaultAttachmentMessage, m.Attachment.Name)
2022-01-04 00:55:08 +01:00
}
2022-12-21 19:19:07 +01:00
limiters := []util.Limiter{
v.BandwidthLimiter(),
2023-01-09 21:40:46 +01:00
util.NewFixedLimiter(vinfo.Limits.AttachmentFileSizeLimit),
util.NewFixedLimiter(vinfo.Stats.AttachmentTotalSizeRemaining),
2022-12-21 19:19:07 +01:00
}
m.Attachment.Size, err = s.fileCache.Write(m.ID, body, limiters...)
if err == util.ErrLimitReached {
2023-02-26 02:23:22 +01:00
return errHTTPEntityTooLargeAttachment.With(m)
} else if err != nil {
2022-01-02 23:56:12 +01:00
return err
}
return nil
}
2021-11-01 20:21:38 +01:00
func (s *Server) handleSubscribeJSON(w http.ResponseWriter, r *http.Request, v *visitor) error {
encoder := func(msg *message) (string, error) {
var buf bytes.Buffer
if err := json.NewEncoder(&buf).Encode(&msg); err != nil {
return "", err
2021-10-23 03:26:01 +02:00
}
return buf.String(), nil
2021-10-23 03:26:01 +02:00
}
2022-01-16 05:17:46 +01:00
return s.handleSubscribeHTTP(w, r, v, "application/x-ndjson", encoder)
2021-10-23 03:26:01 +02:00
}
2021-11-01 20:21:38 +01:00
func (s *Server) handleSubscribeSSE(w http.ResponseWriter, r *http.Request, v *visitor) error {
encoder := func(msg *message) (string, error) {
2021-10-23 19:21:33 +02:00
var buf bytes.Buffer
if err := json.NewEncoder(&buf).Encode(&msg); err != nil {
return "", err
2021-10-23 19:21:33 +02:00
}
2021-10-29 14:29:27 +02:00
if msg.Event != messageEvent {
return fmt.Sprintf("event: %s\ndata: %s\n", msg.Event, buf.String()), nil // Browser's .onmessage() does not fire on this!
2021-10-23 19:21:33 +02:00
}
return fmt.Sprintf("data: %s\n", buf.String()), nil
2021-10-23 21:22:17 +02:00
}
2022-01-16 05:17:46 +01:00
return s.handleSubscribeHTTP(w, r, v, "text/event-stream", encoder)
2021-10-23 19:21:33 +02:00
}
2021-11-01 20:21:38 +01:00
func (s *Server) handleSubscribeRaw(w http.ResponseWriter, r *http.Request, v *visitor) error {
encoder := func(msg *message) (string, error) {
2021-11-02 19:10:56 +01:00
if msg.Event == messageEvent { // only handle default events
return strings.ReplaceAll(msg.Message, "\n", " ") + "\n", nil
}
return "\n", nil // "keepalive" and "open" events just send an empty line
}
2022-01-16 05:17:46 +01:00
return s.handleSubscribeHTTP(w, r, v, "text/plain", encoder)
}
2022-01-16 05:17:46 +01:00
func (s *Server) handleSubscribeHTTP(w http.ResponseWriter, r *http.Request, v *visitor, contentType string, encoder messageEncoder) error {
2023-02-09 21:24:12 +01:00
logvr(v, r).Tag(tagSubscribe).Debug("HTTP stream connection opened")
defer logvr(v, r).Tag(tagSubscribe).Debug("HTTP stream connection closed")
if !v.SubscriptionAllowed() {
2021-12-25 15:15:05 +01:00
return errHTTPTooManyRequestsLimitSubscriptions
2021-11-01 20:21:38 +01:00
}
defer v.RemoveSubscription()
2022-01-16 05:17:46 +01:00
topics, topicsStr, err := s.topicsFromPath(r.URL.Path)
2021-11-01 21:39:40 +01:00
if err != nil {
return err
}
2023-02-23 04:26:43 +01:00
poll, since, scheduled, filters, rateTopics, err := parseSubscribeParams(r)
2021-12-21 21:22:27 +01:00
if err != nil {
return err
}
2021-12-22 09:44:16 +01:00
var wlock sync.Mutex
2022-06-22 19:47:54 +02:00
defer func() {
// Hack: This is the fix for a horrible data race that I have not been able to figure out in quite some time.
// It appears to be happening when the Go HTTP code reads from the socket when closing the request (i.e. AFTER
// this function returns), and causes a data race with the ResponseWriter. Locking wlock here silences the
// data race detector. See https://github.com/binwiederhier/ntfy/issues/338#issuecomment-1163425889.
wlock.TryLock()
}()
2022-06-01 02:38:56 +02:00
sub := func(v *visitor, msg *message) error {
2022-01-16 05:17:46 +01:00
if !filters.Pass(msg) {
2021-12-21 21:22:27 +01:00
return nil
}
m, err := encoder(msg)
if err != nil {
return err
}
2021-12-21 21:22:27 +01:00
wlock.Lock()
defer wlock.Unlock()
if _, err := w.Write([]byte(m)); err != nil {
return err
}
if fl, ok := w.(http.Flusher); ok {
fl.Flush()
}
return nil
}
2023-02-24 20:45:30 +01:00
if err := s.maybeSetRateVisitors(r, v, topics, rateTopics); err != nil {
return err
}
w.Header().Set("Access-Control-Allow-Origin", s.config.AccessControlAllowOrigin) // CORS, allow cross-origin requests
w.Header().Set("Content-Type", contentType+"; charset=utf-8") // Android/Volley client needs charset!
2021-10-29 19:58:14 +02:00
if poll {
2023-03-04 04:22:07 +01:00
for _, t := range topics {
t.Keepalive()
}
2022-06-01 02:38:56 +02:00
return s.sendOldMessages(topics, since, scheduled, v, sub)
2021-10-29 19:58:14 +02:00
}
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
2021-11-15 13:56:58 +01:00
subscriberIDs := make([]int, 0)
for _, t := range topics {
2023-02-24 02:46:53 +01:00
subscriberIDs = append(subscriberIDs, t.Subscribe(sub, v.MaybeUserID(), cancel))
2021-11-15 13:56:58 +01:00
}
defer func() {
for i, subscriberID := range subscriberIDs {
topics[i].Unsubscribe(subscriberID) // Order!
}
}()
2022-06-01 02:38:56 +02:00
if err := sub(v, newOpenMessage(topicsStr)); err != nil { // Send out open message
2021-10-29 19:58:14 +02:00
return err
}
2022-06-01 02:38:56 +02:00
if err := s.sendOldMessages(topics, since, scheduled, v, sub); err != nil {
return err
}
for {
select {
case <-ctx.Done():
return nil
case <-r.Context().Done():
return nil
case <-time.After(s.config.KeepaliveInterval):
2023-03-04 04:22:07 +01:00
ev := logvr(v, r).Tag(tagSubscribe)
if len(topics) == 1 {
ev.With(topics[0]).Trace("Sending keepalive message to %s", topics[0].ID)
} else {
ev.Trace("Sending keepalive message to %d topics", len(topics))
}
2021-11-01 20:21:38 +01:00
v.Keepalive()
2023-03-01 04:25:13 +01:00
for _, t := range topics {
t.Keepalive()
}
2022-06-01 02:38:56 +02:00
if err := sub(v, newKeepaliveMessage(topicsStr)); err != nil { // Send keepalive message
return err
}
}
}
}
2022-01-15 19:23:35 +01:00
func (s *Server) handleSubscribeWS(w http.ResponseWriter, r *http.Request, v *visitor) error {
if strings.ToLower(r.Header.Get("Upgrade")) != "websocket" {
return errHTTPBadRequestWebSocketsUpgradeHeaderMissing
}
if !v.SubscriptionAllowed() {
2022-01-15 19:23:35 +01:00
return errHTTPTooManyRequestsLimitSubscriptions
}
defer v.RemoveSubscription()
2023-02-04 04:21:50 +01:00
logvr(v, r).Tag(tagWebsocket).Debug("WebSocket connection opened")
defer logvr(v, r).Tag(tagWebsocket).Debug("WebSocket connection closed")
2022-01-16 05:17:46 +01:00
topics, topicsStr, err := s.topicsFromPath(r.URL.Path)
2022-01-15 19:23:35 +01:00
if err != nil {
return err
}
2023-02-23 04:26:43 +01:00
poll, since, scheduled, filters, rateTopics, err := parseSubscribeParams(r)
2022-01-15 19:23:35 +01:00
if err != nil {
return err
}
upgrader := &websocket.Upgrader{
ReadBufferSize: wsBufferSize,
WriteBufferSize: wsBufferSize,
CheckOrigin: func(r *http.Request) bool {
return true // We're open for business!
},
}
conn, err := upgrader.Upgrade(w, r, nil)
if err != nil {
return err
}
defer conn.Close()
// Subscription connections can be canceled externally, see topic.CancelSubscribers
2023-01-24 21:31:39 +01:00
cancelCtx, cancel := context.WithCancel(context.Background())
defer cancel()
// Use errgroup to run WebSocket reader and writer in Go routines
2022-01-16 06:07:32 +01:00
var wlock sync.Mutex
2023-01-24 21:31:39 +01:00
g, gctx := errgroup.WithContext(cancelCtx)
2022-01-15 19:23:35 +01:00
g.Go(func() error {
pongWait := s.config.KeepaliveInterval + wsPongWait
conn.SetReadLimit(wsReadLimit)
if err := conn.SetReadDeadline(time.Now().Add(pongWait)); err != nil {
return err
}
conn.SetPongHandler(func(appData string) error {
2023-02-04 04:21:50 +01:00
logvr(v, r).Tag(tagWebsocket).Trace("Received WebSocket pong")
2022-01-15 19:23:35 +01:00
return conn.SetReadDeadline(time.Now().Add(pongWait))
})
for {
_, _, err := conn.NextReader()
if err != nil {
return err
}
select {
case <-gctx.Done():
return nil
default:
}
2022-01-15 19:23:35 +01:00
}
})
g.Go(func() error {
ping := func() error {
2022-01-16 06:07:32 +01:00
wlock.Lock()
defer wlock.Unlock()
2022-01-15 19:23:35 +01:00
if err := conn.SetWriteDeadline(time.Now().Add(wsWriteWait)); err != nil {
return err
}
2023-02-04 04:21:50 +01:00
logvr(v, r).Tag(tagWebsocket).Trace("Sending WebSocket ping")
2022-01-15 19:23:35 +01:00
return conn.WriteMessage(websocket.PingMessage, nil)
}
for {
select {
case <-gctx.Done():
2022-01-15 19:23:35 +01:00
return nil
2023-01-24 21:31:39 +01:00
case <-cancelCtx.Done():
2023-02-04 04:21:50 +01:00
logvr(v, r).Tag(tagWebsocket).Trace("Cancel received, closing subscriber connection")
2023-01-24 20:44:14 +01:00
conn.Close()
return &websocket.CloseError{Code: websocket.CloseNormalClosure, Text: "subscription was canceled"}
2022-01-15 19:23:35 +01:00
case <-time.After(s.config.KeepaliveInterval):
v.Keepalive()
2023-03-01 04:25:13 +01:00
for _, t := range topics {
t.Keepalive()
}
2022-01-15 19:23:35 +01:00
if err := ping(); err != nil {
return err
}
}
}
})
2022-06-01 02:38:56 +02:00
sub := func(v *visitor, msg *message) error {
2022-01-16 05:17:46 +01:00
if !filters.Pass(msg) {
2022-01-15 19:23:35 +01:00
return nil
}
2022-01-16 06:07:32 +01:00
wlock.Lock()
defer wlock.Unlock()
2022-01-15 19:23:35 +01:00
if err := conn.SetWriteDeadline(time.Now().Add(wsWriteWait)); err != nil {
return err
}
return conn.WriteJSON(msg)
}
2023-02-24 20:45:30 +01:00
if err := s.maybeSetRateVisitors(r, v, topics, rateTopics); err != nil {
return err
}
w.Header().Set("Access-Control-Allow-Origin", s.config.AccessControlAllowOrigin) // CORS, allow cross-origin requests
2022-01-15 19:23:35 +01:00
if poll {
2023-03-04 04:22:07 +01:00
for _, t := range topics {
t.Keepalive()
}
2022-06-01 02:38:56 +02:00
return s.sendOldMessages(topics, since, scheduled, v, sub)
2022-01-15 19:23:35 +01:00
}
subscriberIDs := make([]int, 0)
for _, t := range topics {
2023-02-24 02:46:53 +01:00
subscriberIDs = append(subscriberIDs, t.Subscribe(sub, v.MaybeUserID(), cancel))
2022-01-15 19:23:35 +01:00
}
defer func() {
for i, subscriberID := range subscriberIDs {
topics[i].Unsubscribe(subscriberID) // Order!
}
}()
2022-06-01 02:38:56 +02:00
if err := sub(v, newOpenMessage(topicsStr)); err != nil { // Send out open message
2022-01-15 19:23:35 +01:00
return err
}
2022-06-01 02:38:56 +02:00
if err := s.sendOldMessages(topics, since, scheduled, v, sub); err != nil {
2022-01-15 19:23:35 +01:00
return err
}
2022-01-16 04:33:35 +01:00
err = g.Wait()
2023-02-16 20:21:19 +01:00
if err != nil && websocket.IsCloseError(err, websocket.CloseNormalClosure, websocket.CloseGoingAway, websocket.CloseAbnormalClosure, websocket.CloseNoStatusReceived) {
2023-02-06 22:01:32 +01:00
logvr(v, r).Tag(tagWebsocket).Err(err).Fields(websocketErrorContext(err)).Trace("WebSocket connection closed")
2022-06-02 05:24:44 +02:00
return nil // Normal closures are not errors; note: "1006 (abnormal closure)" is treated as normal, because people disconnect a lot
2022-01-16 04:33:35 +01:00
}
return err
2022-01-15 19:23:35 +01:00
}
2023-02-23 04:26:43 +01:00
func parseSubscribeParams(r *http.Request) (poll bool, since sinceMarker, scheduled bool, filters *queryFilter, rateTopics []string, err error) {
2022-01-16 05:17:46 +01:00
poll = readBoolParam(r, false, "x-poll", "poll", "po")
scheduled = readBoolParam(r, false, "x-scheduled", "scheduled", "sched")
since, err = parseSince(r, poll)
if err != nil {
return
2021-12-21 21:22:27 +01:00
}
2022-01-16 05:17:46 +01:00
filters, err = parseQueryFilters(r)
if err != nil {
return
2021-12-21 21:22:27 +01:00
}
2023-02-23 04:26:43 +01:00
rateTopics = readCommaSeparatedParam(r, "x-rate-topics", "rate-topics")
2022-01-16 05:17:46 +01:00
return
2021-12-21 21:22:27 +01:00
}
2023-02-24 20:45:30 +01:00
// maybeSetRateVisitors sets the rate visitor on a topic (v.SetRateVisitor), indicating that all messages published
// to that topic will be rate limited against the rate visitor instead of the publishing visitor.
//
2023-03-04 02:23:18 +01:00
// Setting the rate visitor is ony allowed if the `visitor-subscriber-rate-limiting` setting is enabled, AND
2023-02-24 20:45:30 +01:00
// - auth-file is not set (everything is open by default)
2023-03-03 20:55:37 +01:00
// - or the topic is reserved, and v.user is the owner
// - or the topic is not reserved, and v.user has write access
2023-02-23 04:26:43 +01:00
//
// Note: This TEMPORARILY also registers all topics starting with "up" (= UnifiedPush). This is to ease the transition
// until the Android app will send the "Rate-Topics" header.
2023-02-24 20:45:30 +01:00
func (s *Server) maybeSetRateVisitors(r *http.Request, v *visitor, topics []*topic, rateTopics []string) error {
2023-03-03 20:55:37 +01:00
// Bail out if not enabled
2023-03-04 02:23:18 +01:00
if !s.config.VisitorSubscriberRateLimiting {
2023-03-03 20:55:37 +01:00
return nil
}
2023-02-24 20:45:30 +01:00
// Make a list of topics that we'll actually set the RateVisitor on
eligibleRateTopics := make([]*topic, 0)
for _, t := range topics {
2023-02-25 03:10:41 +01:00
if (strings.HasPrefix(t.ID, unifiedPushTopicPrefix) && len(t.ID) == unifiedPushTopicLength) || util.Contains(rateTopics, t.ID) {
2023-02-24 20:45:30 +01:00
eligibleRateTopics = append(eligibleRateTopics, t)
2023-02-23 04:26:43 +01:00
}
2023-02-24 20:45:30 +01:00
}
if len(eligibleRateTopics) == 0 {
return nil
}
// If access controls are turned off, v has access to everything, and we can set the rate visitor
if s.userManager == nil {
return s.setRateVisitors(r, v, eligibleRateTopics)
}
// If access controls are enabled, only set rate visitor if
// - topic is reserved, and v.user is the owner
// - topic is not reserved, and v.user has write access
writableRateTopics := make([]*topic, 0)
for _, t := range topics {
ownerUserID, err := s.userManager.ReservationOwner(t.ID)
if err != nil {
return err
}
if ownerUserID == "" {
if err := s.userManager.Authorize(v.User(), t.ID, user.PermissionWrite); err == nil {
writableRateTopics = append(writableRateTopics, t)
2023-02-23 04:26:43 +01:00
}
2023-02-24 20:45:30 +01:00
} else if ownerUserID == v.MaybeUserID() {
writableRateTopics = append(writableRateTopics, t)
2023-02-23 04:26:43 +01:00
}
}
2023-02-24 20:45:30 +01:00
return s.setRateVisitors(r, v, writableRateTopics)
}
func (s *Server) setRateVisitors(r *http.Request, v *visitor, rateTopics []*topic) error {
for _, t := range rateTopics {
logvr(v, r).
Tag(tagSubscribe).
2023-02-26 02:23:22 +01:00
With(t).
2023-02-24 20:45:30 +01:00
Debug("Setting visitor as rate visitor for topic %s", t.ID)
t.SetRateVisitor(v)
}
return nil
2023-02-23 04:26:43 +01:00
}
// sendOldMessages selects old messages from the messageCache and calls sub for each of them. It uses since as the
// marker, returning only messages that are newer than the marker.
2022-06-01 02:38:56 +02:00
func (s *Server) sendOldMessages(topics []*topic, since sinceMarker, scheduled bool, v *visitor, sub subscriber) error {
if since.IsNone() {
2021-10-29 19:58:14 +02:00
return nil
}
messages := make([]*message, 0)
2021-11-15 13:56:58 +01:00
for _, t := range topics {
topicMessages, err := s.messageCache.Messages(t.ID, since, scheduled)
2021-11-15 13:56:58 +01:00
if err != nil {
2021-10-29 19:58:14 +02:00
return err
}
messages = append(messages, topicMessages...)
}
sort.Slice(messages, func(i, j int) bool {
return messages[i].Time < messages[j].Time
})
for _, m := range messages {
if err := sub(v, m); err != nil {
return err
2021-11-15 13:56:58 +01:00
}
2021-10-29 19:58:14 +02:00
}
2021-10-24 19:34:15 +02:00
return nil
}
// parseSince returns a timestamp identifying the time span from which cached messages should be received.
//
// Values in the "since=..." parameter can be either a unix timestamp or a duration (e.g. 12h), or
// "all" for all messages.
2022-02-26 21:57:10 +01:00
func parseSince(r *http.Request, poll bool) (sinceMarker, error) {
2021-12-22 09:44:16 +01:00
since := readParam(r, "x-since", "since", "si")
2022-02-26 21:57:10 +01:00
// Easy cases (empty, all, none)
2021-12-22 09:44:16 +01:00
if since == "" {
if poll {
return sinceAllMessages, nil
}
return sinceNoMessages, nil
2022-02-26 21:57:10 +01:00
} else if since == "all" {
return sinceAllMessages, nil
2022-02-26 21:57:10 +01:00
} else if since == "none" {
return sinceNoMessages, nil
}
// ID, timestamp, duration
if validMessageID(since) {
return newSinceID(since), nil
2021-12-22 09:44:16 +01:00
} else if s, err := strconv.ParseInt(since, 10, 64); err == nil {
2022-02-26 21:57:10 +01:00
return newSinceTime(s), nil
2021-12-22 09:44:16 +01:00
} else if d, err := time.ParseDuration(since); err == nil {
2022-02-26 21:57:10 +01:00
return newSinceTime(time.Now().Add(-1 * d).Unix()), nil
2021-10-29 19:58:14 +02:00
}
2021-12-25 15:15:05 +01:00
return sinceNoMessages, errHTTPBadRequestSinceInvalid
2021-10-29 19:58:14 +02:00
}
2022-05-13 20:42:25 +02:00
func (s *Server) handleOptions(w http.ResponseWriter, _ *http.Request, _ *visitor) error {
w.Header().Set("Access-Control-Allow-Methods", "GET, PUT, POST, PATCH, DELETE")
2023-01-18 21:50:06 +01:00
w.Header().Set("Access-Control-Allow-Origin", s.config.AccessControlAllowOrigin) // CORS, allow cross-origin requests
w.Header().Set("Access-Control-Allow-Headers", "*") // CORS, allow auth via JS // FIXME is this terrible?
2021-10-24 20:22:53 +02:00
return nil
}
2021-12-15 15:41:55 +01:00
func (s *Server) topicFromPath(path string) (*topic, error) {
parts := strings.Split(path, "/")
if len(parts) < 2 {
2021-12-25 15:15:05 +01:00
return nil, errHTTPBadRequestTopicInvalid
2021-12-15 15:41:55 +01:00
}
return s.topicFromID(parts[1])
2021-11-15 13:56:58 +01:00
}
2022-01-16 05:17:46 +01:00
func (s *Server) topicsFromPath(path string) ([]*topic, string, error) {
parts := strings.Split(path, "/")
if len(parts) < 2 {
return nil, "", errHTTPBadRequestTopicInvalid
}
topicIDs := util.SplitNoEmpty(parts[1], ",")
topics, err := s.topicsFromIDs(topicIDs...)
if err != nil {
return nil, "", errHTTPBadRequestTopicInvalid
}
return topics, parts[1], nil
}
2021-11-27 22:12:08 +01:00
func (s *Server) topicsFromIDs(ids ...string) ([]*topic, error) {
2021-10-23 03:26:01 +02:00
s.mu.Lock()
defer s.mu.Unlock()
2021-11-15 13:56:58 +01:00
topics := make([]*topic, 0)
2021-11-27 22:12:08 +01:00
for _, id := range ids {
2023-02-09 14:32:51 +01:00
if util.Contains(s.config.DisallowedTopics, id) {
2021-12-25 15:15:05 +01:00
return nil, errHTTPBadRequestTopicDisallowed
2021-12-09 04:13:59 +01:00
}
2021-11-15 13:56:58 +01:00
if _, ok := s.topics[id]; !ok {
2022-01-02 23:56:12 +01:00
if len(s.topics) >= s.config.TotalTopicLimit {
2022-01-12 17:05:04 +01:00
return nil, errHTTPTooManyRequestsLimitTotalTopics
2021-11-15 13:56:58 +01:00
}
2021-12-09 04:57:31 +01:00
s.topics[id] = newTopic(id)
2021-10-29 19:58:14 +02:00
}
2021-11-15 13:56:58 +01:00
topics = append(topics, s.topics[id])
2021-10-23 03:26:01 +02:00
}
2021-11-15 13:56:58 +01:00
return topics, nil
2021-10-23 03:26:01 +02:00
}
func (s *Server) topicFromID(id string) (*topic, error) {
topics, err := s.topicsFromIDs(id)
if err != nil {
return nil, err
}
return topics[0], nil
}
2021-12-27 22:06:40 +01:00
func (s *Server) runSMTPServer() error {
2022-06-02 05:24:44 +02:00
s.smtpServerBackend = newMailBackend(s.config, s.handle)
s.smtpServer = smtp.NewServer(s.smtpServerBackend)
2021-12-27 22:06:40 +01:00
s.smtpServer.Addr = s.config.SMTPServerListen
s.smtpServer.Domain = s.config.SMTPServerDomain
s.smtpServer.ReadTimeout = 10 * time.Second
s.smtpServer.WriteTimeout = 10 * time.Second
2021-12-28 01:26:20 +01:00
s.smtpServer.MaxMessageBytes = 1024 * 1024 // Must be much larger than message size (headers, multipart, etc.)
2021-12-27 22:06:40 +01:00
s.smtpServer.MaxRecipients = 1
s.smtpServer.AllowInsecureAuth = true
return s.smtpServer.ListenAndServe()
2021-12-27 15:48:09 +01:00
}
2021-12-15 15:13:16 +01:00
func (s *Server) runManager() {
2021-12-22 14:17:50 +01:00
for {
select {
case <-time.After(s.config.ManagerInterval):
2023-02-09 21:24:12 +01:00
log.
Tag(tagManager).
Timing(s.execManager).
Debug("Manager finished")
2021-12-22 14:17:50 +01:00
case <-s.closeChan:
return
2021-12-15 15:13:16 +01:00
}
2021-12-22 14:17:50 +01:00
}
2021-12-15 15:13:16 +01:00
}
// runStatsResetter runs once a day (usually midnight UTC) to reset all the visitor's message and
// email counters. The stats are used to display the counters in the web app, as well as for rate limiting.
2023-01-11 04:51:51 +01:00
func (s *Server) runStatsResetter() {
for {
runAt := util.NextOccurrenceUTC(s.config.VisitorStatsResetTime, time.Now())
timer := time.NewTimer(time.Until(runAt))
2023-02-04 04:21:50 +01:00
log.Tag(tagResetter).Debug("Waiting until %v to reset visitor stats", runAt)
2023-01-11 04:51:51 +01:00
select {
case <-timer.C:
2023-02-04 04:21:50 +01:00
log.Tag(tagResetter).Debug("Running stats resetter")
2023-01-11 04:51:51 +01:00
s.resetStats()
case <-s.closeChan:
2023-02-04 04:21:50 +01:00
log.Tag(tagResetter).Debug("Stopping stats resetter")
2023-01-11 04:51:51 +01:00
timer.Stop()
return
}
}
}
func (s *Server) resetStats() {
log.Info("Resetting all visitor stats (daily task)")
s.mu.Lock()
defer s.mu.Unlock() // Includes the database query to avoid races with other processes
for _, v := range s.visitors {
v.ResetStats()
}
if s.userManager != nil {
if err := s.userManager.ResetStats(); err != nil {
2023-02-04 04:21:50 +01:00
log.Tag(tagResetter).Warn("Failed to write to database: %s", err.Error())
2023-01-11 04:51:51 +01:00
}
}
}
2022-01-21 20:17:59 +01:00
func (s *Server) runFirebaseKeepaliver() {
2022-06-01 05:16:44 +02:00
if s.firebaseClient == nil {
2021-12-15 15:13:16 +01:00
return
}
2023-01-03 02:08:37 +01:00
v := newVisitor(s.config, s.messageCache, s.userManager, netip.IPv4Unspecified(), nil) // Background process, not a real visitor, uses IP 0.0.0.0
2021-12-15 15:13:16 +01:00
for {
2021-12-22 14:17:50 +01:00
select {
case <-time.After(s.config.FirebaseKeepaliveInterval):
2022-06-01 05:16:44 +02:00
s.sendToFirebase(v, newKeepaliveMessage(firebaseControlTopic))
case <-time.After(s.config.FirebasePollInterval):
2022-06-01 05:16:44 +02:00
s.sendToFirebase(v, newKeepaliveMessage(firebasePollTopic))
2021-12-22 14:17:50 +01:00
case <-s.closeChan:
return
2021-12-15 15:13:16 +01:00
}
}
}
2021-12-22 14:17:50 +01:00
2022-06-02 05:24:44 +02:00
func (s *Server) runDelayedSender() {
for {
select {
case <-time.After(s.config.DelayedSenderInterval):
if err := s.sendDelayedMessages(); err != nil {
2023-02-04 04:21:50 +01:00
log.Tag(tagPublish).Err(err).Warn("Error sending delayed messages")
2022-06-02 05:24:44 +02:00
}
case <-s.closeChan:
return
}
}
}
func (s *Server) sendDelayedMessages() error {
2022-02-27 20:47:28 +01:00
messages, err := s.messageCache.MessagesDue()
if err != nil {
return err
}
for _, m := range messages {
2023-01-27 04:57:18 +01:00
var u *user.User
2022-12-29 17:09:45 +01:00
if s.userManager != nil && m.User != "" {
2023-01-27 04:57:18 +01:00
u, err = s.userManager.User(m.User)
2022-12-22 03:55:39 +01:00
if err != nil {
2023-02-06 05:34:27 +01:00
log.With(m).Err(err).Warn("Error sending delayed message")
2022-12-22 03:55:39 +01:00
continue
}
}
2023-01-27 04:57:18 +01:00
v := s.visitor(m.Sender, u)
2022-06-01 02:38:56 +02:00
if err := s.sendDelayedMessage(v, m); err != nil {
2023-02-04 04:21:50 +01:00
logvm(v, m).Err(err).Warn("Error sending delayed message")
2022-01-10 21:36:12 +01:00
}
2022-06-01 02:38:56 +02:00
}
return nil
}
func (s *Server) sendDelayedMessage(v *visitor, m *message) error {
2023-02-04 04:21:50 +01:00
logvm(v, m).Debug("Sending delayed message")
2022-06-22 02:07:08 +02:00
s.mu.Lock()
2022-06-01 02:38:56 +02:00
t, ok := s.topics[m.Topic] // If no subscribers, just mark message as published
2022-06-22 02:07:08 +02:00
s.mu.Unlock()
2022-06-01 02:38:56 +02:00
if ok {
go func() {
// We do not rate-limit messages here, since we've rate limited them in the PUT/POST handler
if err := t.Publish(v, m); err != nil {
2023-02-04 04:21:50 +01:00
logvm(v, m).Err(err).Warn("Unable to publish message")
}
}()
2022-06-01 02:38:56 +02:00
}
2022-06-01 05:16:44 +02:00
if s.firebaseClient != nil { // Firebase subscribers may not show up in topics map
go s.sendToFirebase(v, m)
}
if s.config.UpstreamBaseURL != "" {
go s.forwardPollRequest(v, m)
}
2022-06-01 02:38:56 +02:00
if err := s.messageCache.MarkPublished(m); err != nil {
return err
}
return nil
}
2022-04-03 18:39:52 +02:00
// transformBodyJSON peeks the request body, reads the JSON, and converts it to headers
2022-03-16 19:16:54 +01:00
// before passing it on to the next handler. This is meant to be used in combination with handlePublish.
func (s *Server) transformBodyJSON(next handleFunc) handleFunc {
2022-03-15 21:00:59 +01:00
return func(w http.ResponseWriter, r *http.Request, v *visitor) error {
2023-01-28 05:10:59 +01:00
m, err := readJSONWithLimit[publishMessage](r.Body, s.config.MessageLimit*2, false) // 2x to account for JSON format overhead
2022-03-15 21:00:59 +01:00
if err != nil {
return err
}
if !topicRegex.MatchString(m.Topic) {
2022-03-16 19:16:54 +01:00
return errHTTPBadRequestTopicInvalid
2022-03-15 21:00:59 +01:00
}
if m.Message == "" {
m.Message = emptyMessageBody
}
r.URL.Path = "/" + m.Topic
r.Body = io.NopCloser(strings.NewReader(m.Message))
if m.Title != "" {
r.Header.Set("X-Title", m.Title)
}
2022-03-16 19:16:54 +01:00
if m.Priority != 0 {
r.Header.Set("X-Priority", fmt.Sprintf("%d", m.Priority))
2022-03-15 21:00:59 +01:00
}
2022-03-16 19:16:54 +01:00
if m.Tags != nil && len(m.Tags) > 0 {
r.Header.Set("X-Tags", strings.Join(m.Tags, ","))
2022-03-15 21:00:59 +01:00
}
if m.Attach != "" {
r.Header.Set("X-Attach", m.Attach)
}
if m.Filename != "" {
r.Header.Set("X-Filename", m.Filename)
}
if m.Click != "" {
r.Header.Set("X-Click", m.Click)
}
2022-07-16 21:31:03 +02:00
if m.Icon != "" {
r.Header.Set("X-Icon", m.Icon)
}
2022-04-16 22:17:58 +02:00
if len(m.Actions) > 0 {
actionsStr, err := json.Marshal(m.Actions)
if err != nil {
2022-12-29 15:57:42 +01:00
return errHTTPBadRequestMessageJSONInvalid
2022-04-16 22:17:58 +02:00
}
r.Header.Set("X-Actions", string(actionsStr))
}
if m.Email != "" {
r.Header.Set("X-Email", m.Email)
}
if m.Delay != "" {
r.Header.Set("X-Delay", m.Delay)
}
2022-03-15 21:00:59 +01:00
return next(w, r, v)
}
}
2022-06-14 04:07:30 +02:00
func (s *Server) transformMatrixJSON(next handleFunc) handleFunc {
return func(w http.ResponseWriter, r *http.Request, v *visitor) error {
newRequest, err := newRequestFromMatrixJSON(r, s.config.BaseURL, s.config.MessageLimit)
2022-06-14 04:07:30 +02:00
if err != nil {
logvr(v, r).Tag(tagMatrix).Err(err).Debug("Invalid Matrix request")
if e, ok := err.(*errMatrixPushkeyRejected); ok {
return writeMatrixResponse(w, e.rejectedPushKey)
}
2022-06-14 04:07:30 +02:00
return err
}
if err := next(w, newRequest, v); err != nil {
logvr(v, r).Tag(tagMatrix).Err(err).Debug("Error handling Matrix request")
return err
2022-06-14 04:07:30 +02:00
}
return nil
}
}
2022-12-03 21:20:59 +01:00
func (s *Server) authorizeTopicWrite(next handleFunc) handleFunc {
return s.autorizeTopic(next, user.PermissionWrite)
2022-01-22 04:22:27 +01:00
}
2022-12-03 21:20:59 +01:00
func (s *Server) authorizeTopicRead(next handleFunc) handleFunc {
return s.autorizeTopic(next, user.PermissionRead)
2022-01-22 04:22:27 +01:00
}
func (s *Server) autorizeTopic(next handleFunc, perm user.Permission) handleFunc {
2022-01-22 04:22:27 +01:00
return func(w http.ResponseWriter, r *http.Request, v *visitor) error {
if s.userManager == nil {
2022-01-22 04:22:27 +01:00
return next(w, r, v)
}
2022-01-27 18:49:05 +01:00
topics, _, err := s.topicsFromPath(r.URL.Path)
2022-01-22 04:22:27 +01:00
if err != nil {
return err
}
2023-01-28 15:03:14 +01:00
u := v.User()
2022-01-27 18:49:05 +01:00
for _, t := range topics {
2023-01-28 15:03:14 +01:00
if err := s.userManager.Authorize(u, t.ID, perm); err != nil {
2023-02-26 02:23:22 +01:00
logvr(v, r).With(t).Err(err).Debug("Access to topic %s not authorized", t.ID)
return errHTTPForbidden.With(t)
2022-01-27 18:49:05 +01:00
}
2022-01-22 04:22:27 +01:00
}
return next(w, r, v)
}
}
2023-02-08 21:20:44 +01:00
// maybeAuthenticate reads the "Authorization" header and will try to authenticate the user
// if it is set.
//
2023-03-07 05:12:46 +01:00
// - If auth-file is not configured, immediately return an IP-based visitor
// - If the header is not set or not supported (anything non-Basic and non-Bearer),
// an IP-based visitor is returned
2023-02-08 21:20:44 +01:00
// - If the header is set, authenticate will be called to check the username/password (Basic auth),
// or the token (Bearer auth), and read the user from the database
//
// This function will ALWAYS return a visitor, even if an error occurs (e.g. unauthorized), so
// that subsequent logging calls still have a visitor context.
func (s *Server) maybeAuthenticate(r *http.Request) (*visitor, error) {
// Read "Authorization" header value, and exit out early if it's not set
2022-12-22 03:55:39 +01:00
ip := extractIPAddress(r, s.config.BehindProxy)
2023-02-08 21:20:44 +01:00
vip := s.visitor(ip, nil)
if s.userManager == nil {
return vip, nil
}
2023-02-08 21:20:44 +01:00
header, err := readAuthHeader(r)
if err != nil {
return vip, err
} else if !supportedAuthHeader(header) {
2023-02-08 21:20:44 +01:00
return vip, nil
2022-12-03 21:20:59 +01:00
}
2023-02-08 21:20:44 +01:00
// If we're trying to auth, check the rate limiter first
if !vip.AuthAllowed() {
return vip, errHTTPTooManyRequestsLimitAuthFailure // Always return visitor, even when error occurs!
}
u, err := s.authenticate(r, header)
if err != nil {
vip.AuthFailed()
logr(r).Err(err).Debug("Authentication failed")
return vip, errHTTPUnauthorized // Always return visitor, even when error occurs!
}
// Authentication with user was successful
return s.visitor(ip, u), nil
2022-12-02 21:37:48 +01:00
}
// authenticate a user based on basic auth username/password (Authorization: Basic ...), or token auth (Authorization: Bearer ...).
// The Authorization header can be passed as a header or the ?auth=... query param. The latter is required only to
// support the WebSocket JavaScript class, which does not support passing headers during the initial request. The auth
2023-02-08 21:20:44 +01:00
// query param is effectively doubly base64 encoded. Its format is base64(Basic base64(user:pass)).
func (s *Server) authenticate(r *http.Request, header string) (user *user.User, err error) {
if strings.HasPrefix(header, "Bearer") {
return s.authenticateBearerAuth(r, strings.TrimSpace(strings.TrimPrefix(header, "Bearer")))
}
return s.authenticateBasicAuth(r, header)
}
// readAuthHeader reads the raw value of the Authorization header, either from the actual HTTP header,
// or from the ?auth... query parameter
func readAuthHeader(r *http.Request) (string, error) {
2022-12-28 04:14:14 +01:00
value := strings.TrimSpace(r.Header.Get("Authorization"))
2022-12-03 21:20:59 +01:00
queryParam := readQueryParam(r, "authorization", "auth")
if queryParam != "" {
a, err := base64.RawURLEncoding.DecodeString(queryParam)
if err != nil {
2023-02-08 21:20:44 +01:00
return "", err
2022-12-03 21:20:59 +01:00
}
2022-12-28 04:14:14 +01:00
value = strings.TrimSpace(string(a))
2022-12-03 21:20:59 +01:00
}
2023-02-08 21:20:44 +01:00
return value, nil
2022-12-03 21:20:59 +01:00
}
// supportedAuthHeader returns true only if the Authorization header value starts
// with "Basic" or "Bearer". In particular, an empty value is not supported, and neither
// are things like "WebPush", or "vapid" (see #629).
func supportedAuthHeader(value string) bool {
value = strings.ToLower(value)
return strings.HasPrefix(value, "basic ") || strings.HasPrefix(value, "bearer ")
}
func (s *Server) authenticateBasicAuth(r *http.Request, value string) (user *user.User, err error) {
2022-12-03 21:20:59 +01:00
r.Header.Set("Authorization", value)
username, password, ok := r.BasicAuth()
if !ok {
return nil, errors.New("invalid basic auth")
2023-01-29 22:15:08 +01:00
} else if username == "" {
return s.authenticateBearerAuth(r, password) // Treat password as token
2022-12-03 21:20:59 +01:00
}
return s.userManager.Authenticate(username, password)
2022-12-03 21:20:59 +01:00
}
2023-01-29 22:15:08 +01:00
func (s *Server) authenticateBearerAuth(r *http.Request, token string) (*user.User, error) {
2023-01-29 02:29:06 +01:00
u, err := s.userManager.AuthenticateToken(token)
if err != nil {
return nil, err
}
ip := extractIPAddress(r, s.config.BehindProxy)
go s.userManager.EnqueueTokenUpdate(token, &user.TokenUpdate{
LastAccess: time.Now(),
LastOrigin: ip,
})
return u, nil
2022-12-03 21:20:59 +01:00
}
2023-01-27 04:57:18 +01:00
func (s *Server) visitor(ip netip.Addr, user *user.User) *visitor {
2022-12-02 21:37:48 +01:00
s.mu.Lock()
defer s.mu.Unlock()
2023-01-27 04:57:18 +01:00
id := visitorID(ip, user)
v, exists := s.visitors[id]
2022-12-02 21:37:48 +01:00
if !exists {
2023-01-27 04:57:18 +01:00
s.visitors[id] = newVisitor(s.config, s.messageCache, s.userManager, ip, user)
return s.visitors[id]
2022-12-02 21:37:48 +01:00
}
v.Keepalive()
2023-02-08 21:20:44 +01:00
v.SetUser(user) // Always update with the latest user, may be nil!
2022-12-02 21:37:48 +01:00
return v
}
2023-01-18 21:50:06 +01:00
func (s *Server) writeJSON(w http.ResponseWriter, v any) error {
w.Header().Set("Content-Type", "application/json")
w.Header().Set("Access-Control-Allow-Origin", s.config.AccessControlAllowOrigin) // CORS, allow cross-origin requests
if err := json.NewEncoder(w).Encode(v); err != nil {
return err
}
return nil
}