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binwiederhier-ntfy/server/server.go

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package server
import (
"bytes"
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"context"
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"crypto/sha256"
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"embed"
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"encoding/base64"
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"encoding/json"
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"errors"
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"fmt"
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"github.com/emersion/go-smtp"
"github.com/gorilla/websocket"
"golang.org/x/sync/errgroup"
"heckel.io/ntfy/log"
"heckel.io/ntfy/user"
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"heckel.io/ntfy/util"
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"io"
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"net"
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"net/http"
"net/netip"
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"net/url"
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"os"
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"path"
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"path/filepath"
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"regexp"
"sort"
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"strconv"
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"strings"
"sync"
"time"
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"unicode/utf8"
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)
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/*
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- HIGH Rate limiting: Sensitive endpoints (account/login/change-password/...)
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- HIGH Docs
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- HIGH CLI
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- MEDIUM: Test for expiring messages after reservation removal
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- MEDIUM: Test new token endpoints & never-expiring token
- MEDIUM: Make sure account endpoints make sense for admins
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- LOW: UI: Flickering upgrade banner when logging in
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*/
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// Server is the main server, providing the UI and API for ntfy
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type Server struct {
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config *Config
httpServer *http.Server
httpsServer *http.Server
unixListener net.Listener
smtpServer *smtp.Server
smtpServerBackend *smtpBackend
smtpSender mailer
topics map[string]*topic
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visitors map[string]*visitor // ip:<ip> or user:<user>
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firebaseClient *firebaseClient
messages int64
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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
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priceCache *util.LookupCache[map[string]string] // Stripe price ID -> formatted price
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closeChan chan bool
mu sync.Mutex
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}
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// handleFunc extends the normal http.HandlerFunc to be able to easily return errors
type handleFunc func(http.ResponseWriter, *http.Request, *visitor) error
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var (
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// 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)$`)
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webConfigPath = "/config.js"
accountPath = "/account"
matrixPushPath = "/_matrix/push/v1/notify"
apiHealthPath = "/v1/health"
apiTiers = "/v1/tiers"
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apiAccountPath = "/v1/account"
apiAccountTokenPath = "/v1/account/token"
apiAccountPasswordPath = "/v1/account/password"
apiAccountSettingsPath = "/v1/account/settings"
apiAccountSubscriptionPath = "/v1/account/subscription"
apiAccountReservationPath = "/v1/account/reservation"
apiAccountBillingPortalPath = "/v1/account/billing/portal"
apiAccountBillingWebhookPath = "/v1/account/billing/webhook"
apiAccountBillingSubscriptionPath = "/v1/account/billing/subscription"
apiAccountBillingSubscriptionCheckoutSuccessTemplate = "/v1/account/billing/subscription/success/{CHECKOUT_SESSION_ID}"
apiAccountBillingSubscriptionCheckoutSuccessRegex = regexp.MustCompile(`/v1/account/billing/subscription/success/(.+)$`)
apiAccountReservationSingleRegex = regexp.MustCompile(`/v1/account/reservation/([-_A-Za-z0-9]{1,64})$`)
apiAccountSubscriptionSingleRegex = regexp.MustCompile(`^/v1/account/subscription/([-_A-Za-z0-9]{16})$`)
staticRegex = regexp.MustCompile(`^/static/.+`)
docsRegex = regexp.MustCompile(`^/docs(|/.*)$`)
fileRegex = regexp.MustCompile(`^/file/([-_A-Za-z0-9]{1,64})(?:\.[A-Za-z0-9]{1,16})?$`)
disallowedTopics = []string{"docs", "static", "file", "app", "account", "settings", "pricing", "signup", "login", "reset-password"} // If updated, also update in Android and web app
urlRegex = regexp.MustCompile(`^https?://`)
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//go:embed site
webFs embed.FS
webFsCached = &util.CachingEmbedFS{ModTime: time.Now(), FS: webFs}
webSiteDir = "/site"
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webHomeIndex = "/home.html" // Landing page, only if "web-root: home"
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webAppIndex = "/app.html" // React app
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//go:embed docs
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docsStaticFs embed.FS
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docsStaticCached = &util.CachingEmbedFS{ModTime: time.Now(), FS: docsStaticFs}
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)
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const (
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firebaseControlTopic = "~control" // See Android if changed
firebasePollTopic = "~poll" // See iOS if changed
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emptyMessageBody = "triggered" // Used if message body is empty
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newMessageBody = "New message" // Used in poll requests as generic message
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defaultAttachmentMessage = "You received a file: %s" // Used if message body is empty, and there is an attachment
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encodingBase64 = "base64" // Used mainly for binary UnifiedPush messages
jsonBodyBytesLimit = 16384
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)
// WebSocket constants
const (
wsWriteWait = 2 * time.Second
wsBufferSize = 1024
wsReadLimit = 64 // We only ever receive PINGs
wsPongWait = 15 * time.Second
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)
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// New instantiates a new Server. It creates the cache and adds a Firebase
// subscriber (if configured).
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func New(conf *Config) (*Server, error) {
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var mailer mailer
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if conf.SMTPSenderAddr != "" {
mailer = &smtpSender{config: conf}
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}
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var stripe stripeAPI
if conf.StripeSecretKey != "" {
stripe = newStripeAPI()
}
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messageCache, err := createMessageCache(conf)
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if err != nil {
return nil, err
}
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topics, err := messageCache.Topics()
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if err != nil {
return nil, err
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}
var fileCache *fileCache
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if conf.AttachmentCacheDir != "" {
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fileCache, err = newFileCache(conf.AttachmentCacheDir, conf.AttachmentTotalSizeLimit)
if err != nil {
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return nil, err
}
}
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var userManager *user.Manager
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if conf.AuthFile != "" {
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userManager, err = user.NewManager(conf.AuthFile, conf.AuthStartupQueries, conf.AuthDefault, conf.AuthBcryptCost, conf.AuthStatsQueueWriterInterval)
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if err != nil {
return nil, err
}
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}
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var firebaseClient *firebaseClient
if conf.FirebaseKeyFile != "" {
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sender, err := newFirebaseSender(conf.FirebaseKeyFile)
if err != nil {
return nil, err
}
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firebaseClient = newFirebaseClient(sender, userManager)
}
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s := &Server{
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config: conf,
messageCache: messageCache,
fileCache: fileCache,
firebaseClient: firebaseClient,
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smtpSender: mailer,
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topics: topics,
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userManager: userManager,
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visitors: make(map[string]*visitor),
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stripe: stripe,
}
s.priceCache = util.NewLookupCache(s.fetchStripePrices, conf.StripePriceCacheDuration)
return s, nil
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}
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func createMessageCache(conf *Config) (*messageCache, error) {
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if conf.CacheDuration == 0 {
return newNopCache()
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} else if conf.CacheFile != "" {
return newSqliteCache(conf.CacheFile, conf.CacheStartupQueries, conf.CacheDuration, conf.CacheBatchSize, conf.CacheBatchTimeout, false)
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}
return newMemCache()
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}
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// Run executes the main server. It listens on HTTP (+ HTTPS, if configured), and starts
// a manager go routine to print stats and prune messages.
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func (s *Server) Run() error {
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var listenStr string
if s.config.ListenHTTP != "" {
listenStr += fmt.Sprintf(" %s[http]", s.config.ListenHTTP)
}
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if s.config.ListenHTTPS != "" {
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listenStr += fmt.Sprintf(" %s[https]", s.config.ListenHTTPS)
}
if s.config.ListenUnix != "" {
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listenStr += fmt.Sprintf(" %s[unix]", s.config.ListenUnix)
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}
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if s.config.SMTPServerListen != "" {
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listenStr += fmt.Sprintf(" %s[smtp]", s.config.SMTPServerListen)
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}
log.Info("Listening on%s, ntfy %s, log level is %s", listenStr, s.config.Version, log.CurrentLevel().String())
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mux := http.NewServeMux()
mux.HandleFunc("/", s.handle)
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errChan := make(chan error)
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s.mu.Lock()
s.closeChan = make(chan bool)
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if s.config.ListenHTTP != "" {
s.httpServer = &http.Server{Addr: s.config.ListenHTTP, Handler: mux}
go func() {
errChan <- s.httpServer.ListenAndServe()
}()
}
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if s.config.ListenHTTPS != "" {
s.httpsServer = &http.Server{Addr: s.config.ListenHTTPS, Handler: mux}
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go func() {
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errChan <- s.httpsServer.ListenAndServeTLS(s.config.CertFile, s.config.KeyFile)
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}()
}
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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 {
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s.mu.Unlock()
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errChan <- err
return
}
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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
}
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}
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s.mu.Unlock()
httpServer := &http.Server{Handler: mux}
errChan <- httpServer.Serve(s.unixListener)
}()
}
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if s.config.SMTPServerListen != "" {
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go func() {
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errChan <- s.runSMTPServer()
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}()
}
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s.mu.Unlock()
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go s.runManager()
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go s.runStatsResetter()
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go s.runDelayedSender()
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go s.runFirebaseKeepaliver()
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return <-errChan
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}
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// 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()
}
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if s.unixListener != nil {
s.unixListener.Close()
}
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if s.smtpServer != nil {
s.smtpServer.Close()
}
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s.closeDatabases()
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close(s.closeChan)
}
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func (s *Server) closeDatabases() {
if s.userManager != nil {
s.userManager.Close()
}
s.messageCache.Close()
}
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func (s *Server) handle(w http.ResponseWriter, r *http.Request) {
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v, err := s.maybeAuthenticate(r) // Note: Always returns v, even when error is returned
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if err == nil {
log.Debug("%s Dispatching request", logHTTPPrefix(v, r))
if log.IsTrace() {
log.Trace("%s Entire request (headers and body):\n%s", logHTTPPrefix(v, r), renderHTTPRequest(r))
}
err = s.handleInternal(w, r, v)
}
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if err != nil {
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if websocket.IsWebSocketUpgrade(r) {
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isNormalError := strings.Contains(err.Error(), "i/o timeout")
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if isNormalError {
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log.Debug("%s WebSocket error (this error is okay, it happens a lot): %s", logHTTPPrefix(v, r), err.Error())
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} else {
log.Info("%s WebSocket error: %s", logHTTPPrefix(v, r), err.Error())
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}
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return // Do not attempt to write to upgraded connection
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}
if matrixErr, ok := err.(*errMatrix); ok {
writeMatrixError(w, r, v, matrixErr)
return
}
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httpErr, ok := err.(*errHTTP)
if !ok {
httpErr = errHTTPInternalError
}
isNormalError := httpErr.HTTPCode == http.StatusNotFound || httpErr.HTTPCode == http.StatusBadRequest
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if isNormalError {
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log.Debug("%s Connection closed with HTTP %d (ntfy error %d): %s", logHTTPPrefix(v, r), httpErr.HTTPCode, httpErr.Code, err.Error())
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} else {
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log.Info("%s Connection closed with HTTP %d (ntfy error %d): %s", logHTTPPrefix(v, r), httpErr.HTTPCode, httpErr.Code, err.Error())
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}
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w.Header().Set("Content-Type", "application/json")
w.Header().Set("Access-Control-Allow-Origin", s.config.AccessControlAllowOrigin) // CORS, allow cross-origin requests
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w.WriteHeader(httpErr.HTTPCode)
io.WriteString(w, httpErr.JSON()+"\n")
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}
}
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func (s *Server) handleInternal(w http.ResponseWriter, r *http.Request, v *visitor) error {
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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 == "/" {
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return s.ensureWebEnabled(s.handleEmpty)(w, r, v)
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} else if r.Method == http.MethodGet && r.URL.Path == apiHealthPath {
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return s.handleHealth(w, r, v)
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} else if r.Method == http.MethodGet && r.URL.Path == webConfigPath {
return s.ensureWebEnabled(s.handleWebConfig)(w, r, v)
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} else if r.Method == http.MethodPost && r.URL.Path == apiAccountPath {
return s.ensureUserManager(s.handleAccountCreate)(w, r, v)
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} else if r.Method == http.MethodGet && r.URL.Path == apiAccountPath {
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return s.handleAccountGet(w, r, v) // Allowed by anonymous
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} else if r.Method == http.MethodDelete && r.URL.Path == apiAccountPath {
return s.ensureUser(s.withAccountSync(s.handleAccountDelete))(w, r, v)
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} else if r.Method == http.MethodPost && r.URL.Path == apiAccountPasswordPath {
return s.ensureUser(s.handleAccountPasswordChange)(w, r, v)
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} else if r.Method == http.MethodPost && r.URL.Path == apiAccountTokenPath {
return s.ensureUser(s.withAccountSync(s.handleAccountTokenCreate))(w, r, v)
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} else if r.Method == http.MethodPatch && r.URL.Path == apiAccountTokenPath {
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return s.ensureUser(s.withAccountSync(s.handleAccountTokenUpdate))(w, r, v)
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} else if r.Method == http.MethodDelete && r.URL.Path == apiAccountTokenPath {
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return s.ensureUser(s.withAccountSync(s.handleAccountTokenDelete))(w, r, v)
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} else if r.Method == http.MethodPatch && r.URL.Path == apiAccountSettingsPath {
return s.ensureUser(s.withAccountSync(s.handleAccountSettingsChange))(w, r, v)
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} else if r.Method == http.MethodPost && r.URL.Path == apiAccountSubscriptionPath {
return s.ensureUser(s.withAccountSync(s.handleAccountSubscriptionAdd))(w, r, v)
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} else if r.Method == http.MethodPatch && apiAccountSubscriptionSingleRegex.MatchString(r.URL.Path) {
return s.ensureUser(s.withAccountSync(s.handleAccountSubscriptionChange))(w, r, v)
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} else if r.Method == http.MethodDelete && apiAccountSubscriptionSingleRegex.MatchString(r.URL.Path) {
return s.ensureUser(s.withAccountSync(s.handleAccountSubscriptionDelete))(w, r, v)
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} else if r.Method == http.MethodPost && r.URL.Path == apiAccountReservationPath {
return s.ensureUser(s.withAccountSync(s.handleAccountReservationAdd))(w, r, v)
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} else if r.Method == http.MethodDelete && apiAccountReservationSingleRegex.MatchString(r.URL.Path) {
return s.ensureUser(s.withAccountSync(s.handleAccountReservationDelete))(w, r, v)
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} 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 15:09:37 +00:00
} 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 15:09:37 +00:00
} 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 15:09:37 +00:00
} 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 15:09:37 +00:00
} else if r.Method == http.MethodPost && r.URL.Path == apiAccountBillingPortalPath {
return s.ensurePaymentsEnabled(s.ensureStripeCustomer(s.handleAccountBillingPortalSessionCreate))(w, r, v)
2023-01-17 15:09:37 +00:00
} 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)
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} else if r.Method == http.MethodGet && r.URL.Path == matrixPushPath {
return s.handleMatrixDiscovery(w)
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} 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 != "" {
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return s.limitRequests(s.handleFile)(w, r, v)
} else if r.Method == http.MethodOptions {
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return s.ensureWebEnabled(s.handleOptions)(w, r, v)
2022-03-16 18:16:54 +00:00
} else if (r.Method == http.MethodPut || r.Method == http.MethodPost) && r.URL.Path == "/" {
2022-12-03 20:20:59 +00:00
return s.limitRequests(s.transformBodyJSON(s.authorizeTopicWrite(s.handlePublish)))(w, r, v)
2022-06-14 02:07:30 +00:00
} else if r.Method == http.MethodPost && r.URL.Path == matrixPushPath {
2022-12-03 20:20:59 +00:00
return s.limitRequests(s.transformMatrixJSON(s.authorizeTopicWrite(s.handlePublishMatrix)))(w, r, v)
2021-12-27 21:06:40 +00:00
} else if (r.Method == http.MethodPut || r.Method == http.MethodPost) && topicPathRegex.MatchString(r.URL.Path) {
2022-12-03 20:20:59 +00:00
return s.limitRequests(s.authorizeTopicWrite(s.handlePublish))(w, r, v)
2021-12-27 21:06:40 +00:00
} else if r.Method == http.MethodGet && publishPathRegex.MatchString(r.URL.Path) {
2022-12-03 20:20:59 +00:00
return s.limitRequests(s.authorizeTopicWrite(s.handlePublish))(w, r, v)
2021-12-27 21:06:40 +00:00
} else if r.Method == http.MethodGet && jsonPathRegex.MatchString(r.URL.Path) {
2022-12-03 20:20:59 +00:00
return s.limitRequests(s.authorizeTopicRead(s.handleSubscribeJSON))(w, r, v)
2021-12-27 21:06:40 +00:00
} else if r.Method == http.MethodGet && ssePathRegex.MatchString(r.URL.Path) {
2022-12-03 20:20:59 +00:00
return s.limitRequests(s.authorizeTopicRead(s.handleSubscribeSSE))(w, r, v)
2021-12-27 21:06:40 +00:00
} else if r.Method == http.MethodGet && rawPathRegex.MatchString(r.URL.Path) {
2022-12-03 20:20:59 +00:00
return s.limitRequests(s.authorizeTopicRead(s.handleSubscribeRaw))(w, r, v)
2022-01-15 18:23:35 +00:00
} else if r.Method == http.MethodGet && wsPathRegex.MatchString(r.URL.Path) {
2022-12-03 20:20:59 +00:00
return s.limitRequests(s.authorizeTopicRead(s.handleSubscribeWS))(w, r, v)
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} else if r.Method == http.MethodGet && authPathRegex.MatchString(r.URL.Path) {
2022-12-03 20:20:59 +00:00
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)) {
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return s.ensureWebEnabled(s.handleTopic)(w, r, v)
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}
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return errHTTPNotFound
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}
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func (s *Server) handleHome(w http.ResponseWriter, r *http.Request, v *visitor) error {
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if s.config.WebRootIsApp {
r.URL.Path = webAppIndex
} else {
r.URL.Path = webHomeIndex
}
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return s.handleStatic(w, r, v)
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}
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func (s *Server) handleTopic(w http.ResponseWriter, r *http.Request, v *visitor) error {
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unifiedpush := readBoolParam(r, false, "x-unifiedpush", "unifiedpush", "up") // see PUT/POST too!
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if unifiedpush {
w.Header().Set("Content-Type", "application/json")
w.Header().Set("Access-Control-Allow-Origin", s.config.AccessControlAllowOrigin) // CORS, allow cross-origin requests
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_, err := io.WriteString(w, `{"unifiedpush":{"version":1}}`+"\n")
return err
}
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r.URL.Path = webAppIndex
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return s.handleStatic(w, r, v)
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}
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func (s *Server) handleEmpty(_ http.ResponseWriter, _ *http.Request, _ *visitor) error {
return nil
}
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func (s *Server) handleTopicAuth(w http.ResponseWriter, _ *http.Request, _ *visitor) error {
2023-01-18 20:50:06 +00:00
return s.writeJSON(w, newSuccessResponse())
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}
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func (s *Server) handleHealth(w http.ResponseWriter, _ *http.Request, _ *visitor) error {
response := &apiHealthResponse{
Healthy: true,
}
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return s.writeJSON(w, response)
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}
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func (s *Server) handleWebConfig(w http.ResponseWriter, _ *http.Request, _ *visitor) error {
appRoot := "/"
if !s.config.WebRootIsApp {
appRoot = "/app"
}
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response := &apiConfigResponse{
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BaseURL: "", // Will translate to window.location.origin
AppRoot: appRoot,
EnableLogin: s.config.EnableLogin,
EnableSignup: s.config.EnableSignup,
EnablePayments: s.config.StripeSecretKey != "",
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EnableReservations: s.config.EnableReservations,
DisallowedTopics: disallowedTopics,
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}
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b, err := json.MarshalIndent(response, "", " ")
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if err != nil {
return err
}
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w.Header().Set("Content-Type", "text/javascript")
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_, err = io.WriteString(w, fmt.Sprintf("// Generated server configuration\nvar config = %s;\n", string(b)))
return err
}
2022-05-13 18:42:25 +00:00
func (s *Server) handleStatic(w http.ResponseWriter, r *http.Request, _ *visitor) error {
2022-03-06 01:24:10 +00:00
r.URL.Path = webSiteDir + r.URL.Path
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util.Gzip(http.FileServer(http.FS(webFsCached))).ServeHTTP(w, r)
2021-10-29 17:58:14 +00:00
return nil
}
2022-05-13 18:42:25 +00:00
func (s *Server) handleDocs(w http.ResponseWriter, r *http.Request, _ *visitor) error {
2022-03-11 02:55:56 +00:00
util.Gzip(http.FileServer(http.FS(docsStaticCached))).ServeHTTP(w, r)
2021-12-02 22:27:31 +00:00
return nil
}
2023-01-29 20:11:26 +00:00
// 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.
2022-01-12 23:52:07 +00:00
func (s *Server) handleFile(w http.ResponseWriter, r *http.Request, v *visitor) error {
2022-01-02 22:56:12 +00:00
if s.config.AttachmentCacheDir == "" {
2022-01-03 23:55:08 +00:00
return errHTTPInternalError
2022-01-02 22:56:12 +00:00
}
matches := fileRegex.FindStringSubmatch(r.URL.Path)
if len(matches) != 2 {
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return errHTTPInternalErrorInvalidPath
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}
messageID := matches[1]
file := filepath.Join(s.config.AttachmentCacheDir, messageID)
stat, err := os.Stat(file)
if err != nil {
return errHTTPNotFound
}
w.Header().Set("Access-Control-Allow-Origin", s.config.AccessControlAllowOrigin) // CORS, allow cross-origin requests
2023-01-29 20:11:26 +00:00
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 {
return errHTTPNotFound
} 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 20:11:26 +00:00
bandwidthVisitor = s.visitor(v.IP(), u)
} else if m.Sender != netip.IPv4Unspecified() {
bandwidthVisitor = s.visitor(m.Sender, nil)
}
if !bandwidthVisitor.BandwidthAllowed(stat.Size()) {
return errHTTPTooManyRequestsLimitAttachmentBandwidth
}
// Actually send file
f, err := os.Open(file)
if err != nil {
2022-01-02 22:56:12 +00:00
return err
}
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defer f.Close()
_, err = io.Copy(util.NewContentTypeWriter(w, r.URL.Path), f)
return err
2022-01-02 22:56:12 +00:00
}
2022-06-15 20:03:12 +00:00
func (s *Server) handleMatrixDiscovery(w http.ResponseWriter) error {
if s.config.BaseURL == "" {
return errHTTPInternalErrorMissingBaseURL
}
2022-06-16 15:40:56 +00:00
return writeMatrixDiscoveryResponse(w)
2022-06-15 20:03:12 +00:00
}
2022-06-15 00:43:17 +00:00
func (s *Server) handlePublishWithoutResponse(r *http.Request, v *visitor) (*message, error) {
2021-12-15 14:41:55 +00:00
t, err := s.topicFromPath(r.URL.Path)
2021-11-01 20:39:40 +00:00
if err != nil {
2022-06-15 00:43:17 +00:00
return nil, err
2021-11-01 20:39:40 +00:00
}
if !v.MessageAllowed() {
2023-01-09 20:40:46 +00:00
return nil, errHTTPTooManyRequestsLimitMessages
2023-01-09 01:46:46 +00:00
}
2022-04-03 16:39:52 +00:00
body, err := util.Peek(r.Body, s.config.MessageLimit)
2021-10-23 01:26:01 +00:00
if err != nil {
2022-06-15 00:43:17 +00:00
return nil, err
2021-10-23 01:26:01 +00:00
}
2022-01-02 22:56:12 +00:00
m := newDefaultMessage(t.ID, "")
2022-01-17 18:28:07 +00:00
cache, firebase, email, unifiedpush, err := s.parsePublishParams(r, v, m)
if err != nil {
2022-06-15 00:43:17 +00:00
return nil, err
2021-10-29 03:50:38 +00:00
}
2022-05-27 11:55:57 +00:00
if m.PollID != "" {
m = newPollRequestMessage(t.ID, m.PollID)
}
m.User = v.MaybeUserID()
2023-01-27 03:57:18 +00:00
m.Expires = time.Now().Add(v.Limits().MessageExpiryDuration).Unix()
2022-01-17 18:28:07 +00:00
if err := s.handlePublishBody(r, v, m, body, unifiedpush); err != nil {
2022-06-15 00:43:17 +00:00
return nil, err
2021-12-23 23:03:04 +00:00
}
2021-12-15 14:41:55 +00:00
if m.Message == "" {
2021-12-23 23:03:04 +00:00
m.Message = emptyMessageBody
2021-12-15 14:41:55 +00:00
}
delayed := m.Time > time.Now().Unix()
2022-12-20 02:42:36 +00:00
log.Debug("%s Received message: event=%s, user=%s, body=%d byte(s), delayed=%t, firebase=%t, cache=%t, up=%t, email=%s",
logMessagePrefix(v, m), m.Event, m.User, len(m.Message), delayed, firebase, cache, unifiedpush, email)
2022-06-02 03:24:44 +00:00
if log.IsTrace() {
log.Trace("%s Message body: %s", logMessagePrefix(v, m), util.MaybeMarshalJSON(m))
2022-06-02 03:24:44 +00:00
}
if !delayed {
2022-06-01 00:38:56 +00:00
if err := t.Publish(v, m); err != nil {
2022-06-15 00:43:17 +00:00
return nil, err
}
2022-06-01 20:57:35 +00:00
if s.firebaseClient != nil && firebase {
go s.sendToFirebase(v, m)
}
2022-06-02 03:24:44 +00:00
if s.smtpSender != nil && email != "" {
2022-06-01 20:57:35 +00:00
go s.sendEmail(v, m, email)
}
if s.config.UpstreamBaseURL != "" {
go s.forwardPollRequest(v, m)
}
} else {
2022-06-02 03:24:44 +00:00
log.Debug("%s Message delayed, will process later", logMessagePrefix(v, m))
2022-05-27 11:55:57 +00:00
}
2021-12-09 15:23:17 +00:00
if cache {
2022-11-16 15:28:20 +00:00
log.Debug("%s Adding message to cache", logMessagePrefix(v, m))
if err := s.messageCache.AddMessage(m); err != nil {
2022-06-15 00:43:17 +00:00
return nil, err
2022-11-16 15:28:20 +00:00
}
2021-11-02 18:08:21 +00:00
}
u := v.User()
if s.userManager != nil && u != nil && u.Tier != nil {
2023-01-29 01:29:06 +00:00
go s.userManager.EnqueueStats(u.ID, v.Stats())
}
2022-06-15 00:43:17 +00:00
s.mu.Lock()
s.messages++
s.mu.Unlock()
return m, nil
}
func (s *Server) handlePublish(w http.ResponseWriter, r *http.Request, v *visitor) error {
m, err := s.handlePublishWithoutResponse(r, v)
if err != nil {
return err
}
2023-01-18 20:50:06 +00:00
return s.writeJSON(w, m)
2022-06-15 00:43:17 +00:00
}
func (s *Server) handlePublishMatrix(w http.ResponseWriter, r *http.Request, v *visitor) error {
_, err := s.handlePublishWithoutResponse(r, v)
if err != nil {
return &errMatrix{pushKey: r.Header.Get(matrixPushKeyHeader), err: err}
2022-06-15 00:43:17 +00:00
}
2022-06-15 20:03:12 +00:00
return writeMatrixSuccess(w)
2021-10-23 01:26:01 +00:00
}
2022-05-28 00:30:20 +00:00
func (s *Server) sendToFirebase(v *visitor, m *message) {
2022-06-02 03:24:44 +00:00
log.Debug("%s Publishing to Firebase", logMessagePrefix(v, m))
2022-06-01 03:16:44 +00:00
if err := s.firebaseClient.Send(v, m); err != nil {
if err == errFirebaseTemporarilyBanned {
log.Debug("%s Unable to publish to Firebase: %v", logMessagePrefix(v, m), err.Error())
} else {
log.Warn("%s Unable to publish to Firebase: %v", logMessagePrefix(v, m), err.Error())
}
2022-05-28 00:30:20 +00:00
}
}
func (s *Server) sendEmail(v *visitor, m *message, email string) {
2022-06-02 03:24:44 +00:00
log.Debug("%s Sending email to %s", logMessagePrefix(v, m), email)
if err := s.smtpSender.Send(v, m, email); err != nil {
log.Warn("%s Unable to send email to %s: %v", logMessagePrefix(v, m), email, err.Error())
2022-05-28 00:30:20 +00:00
}
}
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)
2022-06-02 03:24:44 +00:00
log.Debug("%s Publishing poll request to %s", logMessagePrefix(v, m), forwardURL)
2022-05-28 00:30:20 +00:00
req, err := http.NewRequest("POST", forwardURL, strings.NewReader(""))
if err != nil {
2022-06-02 03:24:44 +00:00
log.Warn("%s Unable to publish poll request: %v", logMessagePrefix(v, m), err.Error())
2022-05-28 00:30:20 +00:00
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 00:30:20 +00:00
if err != nil {
2022-06-02 03:24:44 +00:00
log.Warn("%s Unable to publish poll request: %v", logMessagePrefix(v, m), err.Error())
2022-05-28 00:30:20 +00:00
return
} else if response.StatusCode != http.StatusOK {
2022-06-02 03:24:44 +00:00
log.Warn("%s Unable to publish poll request, unexpected HTTP status: %d", logMessagePrefix(v, m), response.StatusCode)
2022-05-28 00:30:20 +00:00
return
}
}
2022-01-17 18:28:07 +00:00
func (s *Server) parsePublishParams(r *http.Request, v *visitor, m *message) (cache bool, firebase bool, email string, unifiedpush bool, err error) {
2022-01-16 04:17:46 +00:00
cache = readBoolParam(r, true, "x-cache", "cache")
firebase = readBoolParam(r, true, "x-firebase", "firebase")
2021-12-22 08:44:16 +00:00
m.Title = readParam(r, "x-title", "title", "t")
2022-01-04 22:40:41 +00:00
m.Click = readParam(r, "x-click", "click")
2022-07-17 21:47:21 +00:00
icon := readParam(r, "x-icon", "icon")
filename := readParam(r, "x-filename", "filename", "file", "f")
2022-01-14 17:13:14 +00:00
attach := readParam(r, "x-attach", "attach", "a")
if attach != "" || filename != "" {
m.Attachment = &attachment{}
}
2022-01-14 17:13:14 +00:00
if filename != "" {
m.Attachment.Name = filename
}
if attach != "" {
2022-07-17 21:47:21 +00:00
if !urlRegex.MatchString(attach) {
2022-01-17 18:28:07 +00:00
return false, false, "", false, errHTTPBadRequestAttachmentURLInvalid
}
m.Attachment.URL = attach
2022-01-14 17:13:14 +00:00
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 21:47:21 +00:00
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")
if email != "" {
if !v.EmailAllowed() {
2022-01-17 18:28:07 +00:00
return false, false, "", false, errHTTPTooManyRequestsLimitEmails
}
}
2022-06-02 03:24:44 +00:00
if s.smtpSender == nil && email != "" {
2022-01-17 18:28:07 +00:00
return false, false, "", false, errHTTPBadRequestEmailDisabled
}
messageStr := strings.ReplaceAll(readParam(r, "x-message", "message", "m"), "\\n", "\n")
2021-12-15 14:41:55 +00:00
if messageStr != "" {
m.Message = messageStr
}
2021-12-17 01:33:01 +00:00
m.Priority, err = util.ParsePriority(readParam(r, "x-priority", "priority", "prio", "p"))
if err != nil {
2022-01-17 18:28:07 +00:00
return false, false, "", false, errHTTPBadRequestPriorityInvalid
2021-11-27 21:12:08 +00:00
}
2021-12-22 08:44:16 +00:00
tagsStr := readParam(r, "x-tags", "tags", "tag", "ta")
2021-11-27 21:12:08 +00:00
if tagsStr != "" {
m.Tags = make([]string, 0)
2021-12-21 20:22:27 +00:00
for _, s := range util.SplitNoEmpty(tagsStr, ",") {
m.Tags = append(m.Tags, strings.TrimSpace(s))
2021-12-07 20:39:42 +00:00
}
2021-11-27 21:12:08 +00:00
}
2021-12-15 14:41:55 +00:00
delayStr := readParam(r, "x-delay", "delay", "x-at", "at", "x-in", "in")
2021-12-11 05:06:25 +00:00
if delayStr != "" {
if !cache {
2022-01-17 18:28:07 +00:00
return false, false, "", false, errHTTPBadRequestDelayNoCache
}
2021-12-23 23:03:04 +00:00
if email != "" {
2022-01-17 18:28:07 +00:00
return false, false, "", false, errHTTPBadRequestDelayNoEmail // we cannot store the email address (yet)
2021-12-23 23:03:04 +00:00
}
2021-12-11 05:06:25 +00:00
delay, err := util.ParseFutureTime(delayStr, time.Now())
if err != nil {
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return false, false, "", false, errHTTPBadRequestDelayCannotParse
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} else if delay.Unix() < time.Now().Add(s.config.MinDelay).Unix() {
2022-01-17 18:28:07 +00:00
return false, false, "", false, errHTTPBadRequestDelayTooSmall
2021-12-11 05:06:25 +00:00
} else if delay.Unix() > time.Now().Add(s.config.MaxDelay).Unix() {
2022-01-17 18:28:07 +00:00
return false, false, "", false, errHTTPBadRequestDelayTooLarge
}
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m.Time = delay.Unix()
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m.Sender = v.ip // Important for rate limiting
}
2022-04-16 20:17:58 +00:00
actionsStr := readParam(r, "x-actions", "actions", "action")
if actionsStr != "" {
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m.Actions, err = parseActions(actionsStr)
if err != nil {
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return false, false, "", false, wrapErrHTTP(errHTTPBadRequestActionsInvalid, err.Error())
2022-04-17 18:29:43 +00:00
}
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}
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unifiedpush = readBoolParam(r, false, "x-unifiedpush", "unifiedpush", "up") // see GET too!
2021-12-25 21:07:55 +00:00
if unifiedpush {
firebase = false
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unifiedpush = true
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}
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m.PollID = readParam(r, "x-poll-id", "poll-id")
2022-05-27 11:55:57 +00:00
if m.PollID != "" {
unifiedpush = false
cache = false
email = ""
}
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return cache, firebase, email, unifiedpush, nil
2021-11-27 21:12:08 +00:00
}
// handlePublishBody consumes the PUT/POST body and decides whether the body is an attachment or the message.
//
2022-09-27 16:37:02 +00:00
// 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
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func (s *Server) handlePublishBody(r *http.Request, v *visitor, m *message, body *util.PeekedReadCloser, unifiedpush bool) error {
2022-05-28 00:30:20 +00:00
if m.Event == pollRequestEvent { // Case 1
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return s.handleBodyDiscard(body)
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} else if unifiedpush {
2022-05-28 00:30:20 +00:00
return s.handleBodyAsMessageAutoDetect(m, body) // Case 2
2022-01-17 18:28:07 +00:00
} else if m.Attachment != nil && m.Attachment.URL != "" {
2022-05-28 00:30:20 +00:00
return s.handleBodyAsTextMessage(m, body) // Case 3
} else if m.Attachment != nil && m.Attachment.Name != "" {
2022-05-28 00:30:20 +00:00
return s.handleBodyAsAttachment(r, v, m, body) // Case 4
2022-04-03 16:39:52 +00:00
} else if !body.LimitReached && utf8.Valid(body.PeekedBytes) {
2022-05-28 00:30:20 +00:00
return s.handleBodyAsTextMessage(m, body) // Case 5
}
2022-05-28 00:30:20 +00:00
return s.handleBodyAsAttachment(r, v, m, body) // Case 6
2022-01-17 18:28:07 +00:00
}
2022-06-02 03:24:44 +00:00
func (s *Server) handleBodyDiscard(body *util.PeekedReadCloser) error {
_, err := io.Copy(io.Discard, body)
_ = body.Close()
return err
}
2022-04-03 16:39:52 +00:00
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 18:28:07 +00:00
} else {
2022-04-03 16:39:52 +00:00
m.Message = base64.StdEncoding.EncodeToString(body.PeekedBytes)
2022-01-17 18:28:07 +00:00
m.Encoding = encodingBase64
}
return nil
}
2022-04-03 16:39:52 +00:00
func (s *Server) handleBodyAsTextMessage(m *message, body *util.PeekedReadCloser) error {
if !utf8.Valid(body.PeekedBytes) {
return errHTTPBadRequestMessageNotUTF8
}
2022-04-03 16:39:52 +00:00
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
}
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if m.Attachment != nil && m.Attachment.Name != "" && m.Message == "" {
m.Message = fmt.Sprintf(defaultAttachmentMessage, m.Attachment.Name)
}
return nil
}
2022-04-03 16:39:52 +00:00
func (s *Server) handleBodyAsAttachment(r *http.Request, v *visitor, m *message, body *util.PeekedReadCloser) error {
2022-01-12 16:05:04 +00:00
if s.fileCache == nil || s.config.BaseURL == "" || s.config.AttachmentCacheDir == "" {
return errHTTPBadRequestAttachmentsDisallowed
}
2023-01-09 20:40:46 +00:00
vinfo, err := v.Info()
if err != nil {
return err
}
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attachmentExpiry := time.Now().Add(vinfo.Limits.AttachmentExpiryDuration).Unix()
if m.Time > attachmentExpiry {
return errHTTPBadRequestAttachmentsExpiryBeforeDelivery
}
2022-01-11 17:58:11 +00:00
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 20:40:46 +00:00
if err == nil && (contentLength > vinfo.Stats.AttachmentTotalSizeRemaining || contentLength > vinfo.Limits.AttachmentFileSizeLimit) {
2022-12-29 14:57:42 +00:00
return errHTTPEntityTooLargeAttachment
2022-01-11 17:58:11 +00:00
}
}
if m.Attachment == nil {
m.Attachment = &attachment{}
}
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var ext string
m.Sender = v.ip // Important for attachment rate limiting
m.Attachment.Expires = attachmentExpiry
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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 == "" {
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m.Message = fmt.Sprintf(defaultAttachmentMessage, m.Attachment.Name)
2022-01-03 23:55:08 +00:00
}
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limiters := []util.Limiter{
v.BandwidthLimiter(),
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util.NewFixedLimiter(vinfo.Limits.AttachmentFileSizeLimit),
util.NewFixedLimiter(vinfo.Stats.AttachmentTotalSizeRemaining),
2022-12-21 18:19:07 +00:00
}
m.Attachment.Size, err = s.fileCache.Write(m.ID, body, limiters...)
if err == util.ErrLimitReached {
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return errHTTPEntityTooLargeAttachment
} else if err != nil {
2022-01-02 22:56:12 +00:00
return err
}
return nil
}
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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 01:26:01 +00:00
}
return buf.String(), nil
2021-10-23 01:26:01 +00:00
}
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return s.handleSubscribeHTTP(w, r, v, "application/x-ndjson", encoder)
2021-10-23 01:26:01 +00:00
}
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func (s *Server) handleSubscribeSSE(w http.ResponseWriter, r *http.Request, v *visitor) error {
encoder := func(msg *message) (string, error) {
2021-10-23 17:21:33 +00:00
var buf bytes.Buffer
if err := json.NewEncoder(&buf).Encode(&msg); err != nil {
return "", err
2021-10-23 17:21:33 +00:00
}
2021-10-29 12:29:27 +00:00
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 17:21:33 +00:00
}
return fmt.Sprintf("data: %s\n", buf.String()), nil
2021-10-23 19:22:17 +00:00
}
2022-01-16 04:17:46 +00:00
return s.handleSubscribeHTTP(w, r, v, "text/event-stream", encoder)
2021-10-23 17:21:33 +00:00
}
2021-11-01 19:21:38 +00:00
func (s *Server) handleSubscribeRaw(w http.ResponseWriter, r *http.Request, v *visitor) error {
encoder := func(msg *message) (string, error) {
2021-11-02 18:10:56 +00:00
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
}
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return s.handleSubscribeHTTP(w, r, v, "text/plain", encoder)
}
2022-01-16 04:17:46 +00:00
func (s *Server) handleSubscribeHTTP(w http.ResponseWriter, r *http.Request, v *visitor, contentType string, encoder messageEncoder) error {
2022-06-02 03:24:44 +00:00
log.Debug("%s HTTP stream connection opened", logHTTPPrefix(v, r))
defer log.Debug("%s HTTP stream connection closed", logHTTPPrefix(v, r))
if !v.SubscriptionAllowed() {
2021-12-25 14:15:05 +00:00
return errHTTPTooManyRequestsLimitSubscriptions
2021-11-01 19:21:38 +00:00
}
defer v.RemoveSubscription()
2022-01-16 04:17:46 +00:00
topics, topicsStr, err := s.topicsFromPath(r.URL.Path)
2021-11-01 20:39:40 +00:00
if err != nil {
return err
}
2022-01-16 04:17:46 +00:00
poll, since, scheduled, filters, err := parseSubscribeParams(r)
2021-12-21 20:22:27 +00:00
if err != nil {
return err
}
2021-12-22 08:44:16 +00:00
var wlock sync.Mutex
2022-06-22 17:47:54 +00:00
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()
}()
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sub := func(v *visitor, msg *message) error {
2022-01-16 04:17:46 +00:00
if !filters.Pass(msg) {
2021-12-21 20:22:27 +00:00
return nil
}
m, err := encoder(msg)
if err != nil {
return err
}
2021-12-21 20:22:27 +00:00
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
}
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 17:58:14 +00:00
if poll {
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return s.sendOldMessages(topics, since, scheduled, v, sub)
2021-10-29 17:58:14 +00:00
}
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
2021-11-15 12:56:58 +00:00
subscriberIDs := make([]int, 0)
for _, t := range topics {
subscriberIDs = append(subscriberIDs, t.Subscribe(sub, v.MaybeUserID(), cancel))
2021-11-15 12:56:58 +00:00
}
defer func() {
for i, subscriberID := range subscriberIDs {
topics[i].Unsubscribe(subscriberID) // Order!
}
}()
2022-06-01 00:38:56 +00:00
if err := sub(v, newOpenMessage(topicsStr)); err != nil { // Send out open message
2021-10-29 17:58:14 +00:00
return err
}
2022-06-01 00:38:56 +00:00
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):
2022-06-02 03:24:44 +00:00
log.Trace("%s Sending keepalive message", logHTTPPrefix(v, r))
2021-11-01 19:21:38 +00:00
v.Keepalive()
2022-06-01 00:38:56 +00:00
if err := sub(v, newKeepaliveMessage(topicsStr)); err != nil { // Send keepalive message
return err
}
}
}
}
2022-01-15 18:23:35 +00:00
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 18:23:35 +00:00
return errHTTPTooManyRequestsLimitSubscriptions
}
defer v.RemoveSubscription()
2022-06-02 03:24:44 +00:00
log.Debug("%s WebSocket connection opened", logHTTPPrefix(v, r))
defer log.Debug("%s WebSocket connection closed", logHTTPPrefix(v, r))
2022-01-16 04:17:46 +00:00
topics, topicsStr, err := s.topicsFromPath(r.URL.Path)
2022-01-15 18:23:35 +00:00
if err != nil {
return err
}
2022-01-16 04:17:46 +00:00
poll, since, scheduled, filters, err := parseSubscribeParams(r)
2022-01-15 18:23:35 +00:00
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 20:31:39 +00:00
cancelCtx, cancel := context.WithCancel(context.Background())
defer cancel()
// Use errgroup to run WebSocket reader and writer in Go routines
2022-01-16 05:07:32 +00:00
var wlock sync.Mutex
2023-01-24 20:31:39 +00:00
g, gctx := errgroup.WithContext(cancelCtx)
2022-01-15 18:23:35 +00:00
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 {
2022-06-02 03:24:44 +00:00
log.Trace("%s Received WebSocket pong", logHTTPPrefix(v, r))
2022-01-15 18:23:35 +00:00
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 18:23:35 +00:00
}
})
g.Go(func() error {
ping := func() error {
2022-01-16 05:07:32 +00:00
wlock.Lock()
defer wlock.Unlock()
2022-01-15 18:23:35 +00:00
if err := conn.SetWriteDeadline(time.Now().Add(wsWriteWait)); err != nil {
return err
}
2022-06-02 03:24:44 +00:00
log.Trace("%s Sending WebSocket ping", logHTTPPrefix(v, r))
2022-01-15 18:23:35 +00:00
return conn.WriteMessage(websocket.PingMessage, nil)
}
for {
select {
case <-gctx.Done():
2022-01-15 18:23:35 +00:00
return nil
2023-01-24 20:31:39 +00:00
case <-cancelCtx.Done():
2023-01-24 19:44:14 +00:00
log.Trace("%s Cancel received, closing subscriber connection", logHTTPPrefix(v, r))
conn.Close()
return &websocket.CloseError{Code: websocket.CloseNormalClosure, Text: "subscription was canceled"}
2022-01-15 18:23:35 +00:00
case <-time.After(s.config.KeepaliveInterval):
v.Keepalive()
if err := ping(); err != nil {
return err
}
}
}
})
2022-06-01 00:38:56 +00:00
sub := func(v *visitor, msg *message) error {
2022-01-16 04:17:46 +00:00
if !filters.Pass(msg) {
2022-01-15 18:23:35 +00:00
return nil
}
2022-01-16 05:07:32 +00:00
wlock.Lock()
defer wlock.Unlock()
2022-01-15 18:23:35 +00:00
if err := conn.SetWriteDeadline(time.Now().Add(wsWriteWait)); err != nil {
return err
}
return conn.WriteJSON(msg)
}
w.Header().Set("Access-Control-Allow-Origin", s.config.AccessControlAllowOrigin) // CORS, allow cross-origin requests
2022-01-15 18:23:35 +00:00
if poll {
2022-06-01 00:38:56 +00:00
return s.sendOldMessages(topics, since, scheduled, v, sub)
2022-01-15 18:23:35 +00:00
}
subscriberIDs := make([]int, 0)
for _, t := range topics {
subscriberIDs = append(subscriberIDs, t.Subscribe(sub, v.MaybeUserID(), cancel))
2022-01-15 18:23:35 +00:00
}
defer func() {
for i, subscriberID := range subscriberIDs {
topics[i].Unsubscribe(subscriberID) // Order!
}
}()
2022-06-01 00:38:56 +00:00
if err := sub(v, newOpenMessage(topicsStr)); err != nil { // Send out open message
2022-01-15 18:23:35 +00:00
return err
}
2022-06-01 00:38:56 +00:00
if err := s.sendOldMessages(topics, since, scheduled, v, sub); err != nil {
2022-01-15 18:23:35 +00:00
return err
}
2022-01-16 03:33:35 +00:00
err = g.Wait()
2022-06-02 03:24:44 +00:00
if err != nil && websocket.IsCloseError(err, websocket.CloseNormalClosure, websocket.CloseGoingAway, websocket.CloseAbnormalClosure) {
log.Trace("%s WebSocket connection closed: %s", logHTTPPrefix(v, r), err.Error())
return nil // Normal closures are not errors; note: "1006 (abnormal closure)" is treated as normal, because people disconnect a lot
2022-01-16 03:33:35 +00:00
}
return err
2022-01-15 18:23:35 +00:00
}
2022-02-26 20:57:10 +00:00
func parseSubscribeParams(r *http.Request) (poll bool, since sinceMarker, scheduled bool, filters *queryFilter, err error) {
2022-01-16 04:17:46 +00:00
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 20:22:27 +00:00
}
2022-01-16 04:17:46 +00:00
filters, err = parseQueryFilters(r)
if err != nil {
return
2021-12-21 20:22:27 +00:00
}
2022-01-16 04:17:46 +00:00
return
2021-12-21 20:22:27 +00:00
}
// 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 00:38:56 +00:00
func (s *Server) sendOldMessages(topics []*topic, since sinceMarker, scheduled bool, v *visitor, sub subscriber) error {
if since.IsNone() {
2021-10-29 17:58:14 +00:00
return nil
}
messages := make([]*message, 0)
2021-11-15 12:56:58 +00:00
for _, t := range topics {
topicMessages, err := s.messageCache.Messages(t.ID, since, scheduled)
2021-11-15 12:56:58 +00:00
if err != nil {
2021-10-29 17:58:14 +00:00
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
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}
2021-10-29 17:58:14 +00:00
}
2021-10-24 17:34:15 +00:00
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 20:57:10 +00:00
func parseSince(r *http.Request, poll bool) (sinceMarker, error) {
2021-12-22 08:44:16 +00:00
since := readParam(r, "x-since", "since", "si")
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// Easy cases (empty, all, none)
2021-12-22 08:44:16 +00:00
if since == "" {
if poll {
return sinceAllMessages, nil
}
return sinceNoMessages, nil
2022-02-26 20:57:10 +00:00
} else if since == "all" {
return sinceAllMessages, nil
2022-02-26 20:57:10 +00:00
} else if since == "none" {
return sinceNoMessages, nil
}
// ID, timestamp, duration
if validMessageID(since) {
return newSinceID(since), nil
2021-12-22 08:44:16 +00:00
} else if s, err := strconv.ParseInt(since, 10, 64); err == nil {
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return newSinceTime(s), nil
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} else if d, err := time.ParseDuration(since); err == nil {
2022-02-26 20:57:10 +00:00
return newSinceTime(time.Now().Add(-1 * d).Unix()), nil
2021-10-29 17:58:14 +00:00
}
2021-12-25 14:15:05 +00:00
return sinceNoMessages, errHTTPBadRequestSinceInvalid
2021-10-29 17:58:14 +00:00
}
2022-05-13 18:42:25 +00:00
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 20:50:06 +00:00
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?
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return nil
}
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func (s *Server) topicFromPath(path string) (*topic, error) {
parts := strings.Split(path, "/")
if len(parts) < 2 {
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return nil, errHTTPBadRequestTopicInvalid
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}
return s.topicFromID(parts[1])
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}
2022-01-16 04:17:46 +00:00
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
}
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func (s *Server) topicsFromIDs(ids ...string) ([]*topic, error) {
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s.mu.Lock()
defer s.mu.Unlock()
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topics := make([]*topic, 0)
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for _, id := range ids {
2022-10-01 19:50:48 +00:00
if util.Contains(disallowedTopics, id) {
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return nil, errHTTPBadRequestTopicDisallowed
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}
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if _, ok := s.topics[id]; !ok {
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if len(s.topics) >= s.config.TotalTopicLimit {
2022-01-12 16:05:04 +00:00
return nil, errHTTPTooManyRequestsLimitTotalTopics
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}
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s.topics[id] = newTopic(id)
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}
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topics = append(topics, s.topics[id])
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}
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return topics, nil
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}
func (s *Server) topicFromID(id string) (*topic, error) {
topics, err := s.topicsFromIDs(id)
if err != nil {
return nil, err
}
return topics[0], nil
}
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func (s *Server) execManager() {
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log.Debug("Manager: Starting")
defer log.Debug("Manager: Finished")
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// WARNING: Make sure to only selectively lock with the mutex, and be aware that this
// there is no mutex for the entire function.
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// Expire visitors from rate visitors map
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s.mu.Lock()
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staleVisitors := 0
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for ip, v := range s.visitors {
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if v.Stale() {
log.Trace("Deleting stale visitor %s", v.ip)
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delete(s.visitors, ip)
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staleVisitors++
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}
2021-10-23 01:26:01 +00:00
}
2022-06-21 23:07:27 +00:00
s.mu.Unlock()
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log.Debug("Manager: Deleted %d stale visitor(s)", staleVisitors)
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// Delete expired user tokens and users
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if s.userManager != nil {
if err := s.userManager.RemoveExpiredTokens(); err != nil {
log.Warn("Error expiring user tokens: %s", err.Error())
}
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if err := s.userManager.RemoveDeletedUsers(); err != nil {
log.Warn("Error deleting soft-deleted users: %s", err.Error())
}
}
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// Delete expired attachments
if s.fileCache != nil {
ids, err := s.messageCache.AttachmentsExpired()
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if err != nil {
log.Warn("Manager: Error retrieving expired attachments: %s", err.Error())
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} else if len(ids) > 0 {
if log.IsDebug() {
log.Debug("Manager: Deleting attachments %s", strings.Join(ids, ", "))
}
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if err := s.fileCache.Remove(ids...); err != nil {
log.Warn("Manager: Error deleting attachments: %s", err.Error())
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}
if err := s.messageCache.MarkAttachmentsDeleted(ids...); err != nil {
log.Warn("Manager: Error marking attachments deleted: %s", err.Error())
}
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} else {
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log.Debug("Manager: No expired attachments to delete")
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}
}
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// Prune messages
log.Debug("Manager: Pruning messages")
expiredMessageIDs, err := s.messageCache.MessagesExpired()
if err != nil {
log.Warn("Manager: Error retrieving expired messages: %s", err.Error())
} else if len(expiredMessageIDs) > 0 {
if err := s.fileCache.Remove(expiredMessageIDs...); err != nil {
log.Warn("Manager: Error deleting attachments for expired messages: %s", err.Error())
}
if err := s.messageCache.DeleteMessages(expiredMessageIDs...); err != nil {
log.Warn("Manager: Error marking attachments deleted: %s", err.Error())
}
} else {
log.Debug("Manager: No expired messages to delete")
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}
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// Message count per topic
var messages int
messageCounts, err := s.messageCache.MessageCounts()
if err != nil {
log.Warn("Manager: Cannot get message counts: %s", err.Error())
messageCounts = make(map[string]int) // Empty, so we can continue
}
for _, count := range messageCounts {
messages += count
}
// Remove subscriptions without subscribers
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s.mu.Lock()
var subscribers int
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for _, t := range s.topics {
subs := t.SubscribersCount()
log.Trace("- topic %s: %d subscribers", t.ID, subs)
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msgs, exists := messageCounts[t.ID]
if subs == 0 && (!exists || msgs == 0) {
log.Trace("Deleting empty topic %s", t.ID)
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delete(s.topics, t.ID)
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continue
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}
subscribers += subs
}
2022-06-21 23:07:27 +00:00
s.mu.Unlock()
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2021-12-27 21:18:15 +00:00
// Mail stats
2022-06-02 03:24:44 +00:00
var receivedMailTotal, receivedMailSuccess, receivedMailFailure int64
if s.smtpServerBackend != nil {
receivedMailTotal, receivedMailSuccess, receivedMailFailure = s.smtpServerBackend.Counts()
}
var sentMailTotal, sentMailSuccess, sentMailFailure int64
if s.smtpSender != nil {
sentMailTotal, sentMailSuccess, sentMailFailure = s.smtpSender.Counts()
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}
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// Print stats
2022-06-22 19:11:50 +00:00
s.mu.Lock()
messagesCount, topicsCount, visitorsCount := s.messages, len(s.topics), len(s.visitors)
s.mu.Unlock()
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log.Info("Stats: %d messages published, %d in cache, %d topic(s) active, %d subscriber(s), %d visitor(s), %d mails received (%d successful, %d failed), %d mails sent (%d successful, %d failed)",
2022-06-22 19:11:50 +00:00
messagesCount, messages, topicsCount, subscribers, visitorsCount,
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receivedMailTotal, receivedMailSuccess, receivedMailFailure,
sentMailTotal, sentMailSuccess, sentMailFailure)
}
2021-10-24 02:49:50 +00:00
2021-12-27 21:06:40 +00:00
func (s *Server) runSMTPServer() error {
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s.smtpServerBackend = newMailBackend(s.config, s.handle)
s.smtpServer = smtp.NewServer(s.smtpServerBackend)
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s.smtpServer.Addr = s.config.SMTPServerListen
s.smtpServer.Domain = s.config.SMTPServerDomain
s.smtpServer.ReadTimeout = 10 * time.Second
s.smtpServer.WriteTimeout = 10 * time.Second
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s.smtpServer.MaxMessageBytes = 1024 * 1024 // Must be much larger than message size (headers, multipart, etc.)
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s.smtpServer.MaxRecipients = 1
s.smtpServer.AllowInsecureAuth = true
return s.smtpServer.ListenAndServe()
2021-12-27 14:48:09 +00:00
}
2021-12-15 14:13:16 +00:00
func (s *Server) runManager() {
2021-12-22 13:17:50 +00:00
for {
select {
case <-time.After(s.config.ManagerInterval):
2022-12-28 03:14:14 +00:00
s.execManager()
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case <-s.closeChan:
return
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}
2021-12-22 13:17:50 +00:00
}
2021-12-15 14:13:16 +00:00
}
// 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 03:51:51 +00:00
func (s *Server) runStatsResetter() {
for {
runAt := util.NextOccurrenceUTC(s.config.VisitorStatsResetTime, time.Now())
timer := time.NewTimer(time.Until(runAt))
log.Debug("Stats resetter: Waiting until %v to reset visitor stats", runAt)
select {
case <-timer.C:
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log.Debug("Stats resetter: Running")
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s.resetStats()
case <-s.closeChan:
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log.Debug("Stats resetter: Stopping timer")
2023-01-11 03:51:51 +00:00
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 {
log.Warn("Failed to write to database: %s", err.Error())
}
}
}
2022-01-21 19:17:59 +00:00
func (s *Server) runFirebaseKeepaliver() {
2022-06-01 03:16:44 +00:00
if s.firebaseClient == nil {
2021-12-15 14:13:16 +00:00
return
}
2023-01-03 01:08:37 +00:00
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 14:13:16 +00:00
for {
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select {
case <-time.After(s.config.FirebaseKeepaliveInterval):
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s.sendToFirebase(v, newKeepaliveMessage(firebaseControlTopic))
case <-time.After(s.config.FirebasePollInterval):
2022-06-01 03:16:44 +00:00
s.sendToFirebase(v, newKeepaliveMessage(firebasePollTopic))
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case <-s.closeChan:
return
2021-12-15 14:13:16 +00:00
}
}
}
2021-12-22 13:17:50 +00:00
2022-06-02 03:24:44 +00:00
func (s *Server) runDelayedSender() {
for {
select {
case <-time.After(s.config.DelayedSenderInterval):
if err := s.sendDelayedMessages(); err != nil {
log.Warn("Error sending delayed messages: %s", err.Error())
}
case <-s.closeChan:
return
}
}
}
func (s *Server) sendDelayedMessages() error {
2022-02-27 19:47:28 +00:00
messages, err := s.messageCache.MessagesDue()
if err != nil {
return err
}
for _, m := range messages {
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var u *user.User
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if s.userManager != nil && m.User != "" {
2023-01-27 03:57:18 +00:00
u, err = s.userManager.User(m.User)
2022-12-22 02:55:39 +00:00
if err != nil {
2023-01-27 03:57:18 +00:00
log.Warn("Error sending delayed message %s: %s", m.ID, err.Error())
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continue
}
}
2023-01-27 03:57:18 +00:00
v := s.visitor(m.Sender, u)
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if err := s.sendDelayedMessage(v, m); err != nil {
2022-06-02 03:24:44 +00:00
log.Warn("%s Error sending delayed message: %s", logMessagePrefix(v, m), err.Error())
2022-01-10 20:36:12 +00:00
}
2022-06-01 00:38:56 +00:00
}
return nil
}
func (s *Server) sendDelayedMessage(v *visitor, m *message) error {
2022-06-02 03:24:44 +00:00
log.Debug("%s Sending delayed message", logMessagePrefix(v, m))
2022-06-22 00:07:08 +00:00
s.mu.Lock()
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t, ok := s.topics[m.Topic] // If no subscribers, just mark message as published
2022-06-22 00:07:08 +00:00
s.mu.Unlock()
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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 {
2022-06-02 03:24:44 +00:00
log.Warn("%s Unable to publish message: %v", logMessagePrefix(v, m), err.Error())
}
}()
2022-06-01 00:38:56 +00:00
}
2022-06-01 03:16:44 +00:00
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 00:38:56 +00:00
if err := s.messageCache.MarkPublished(m); err != nil {
return err
}
return nil
}
2022-01-22 03:22:27 +00:00
func (s *Server) limitRequests(next handleFunc) handleFunc {
return func(w http.ResponseWriter, r *http.Request, v *visitor) error {
2022-10-07 21:16:20 +00:00
if util.ContainsIP(s.config.VisitorRequestExemptIPAddrs, v.ip) {
2022-02-14 21:09:59 +00:00
return next(w, r, v)
} else if err := v.RequestAllowed(); err != nil {
2022-01-22 03:22:27 +00:00
return errHTTPTooManyRequestsLimitRequests
}
return next(w, r, v)
}
}
2022-04-03 16:39:52 +00:00
// transformBodyJSON peeks the request body, reads the JSON, and converts it to headers
2022-03-16 18:16:54 +00:00
// 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 20:00:59 +00:00
return func(w http.ResponseWriter, r *http.Request, v *visitor) error {
2023-01-28 04:10:59 +00:00
m, err := readJSONWithLimit[publishMessage](r.Body, s.config.MessageLimit*2, false) // 2x to account for JSON format overhead
2022-03-15 20:00:59 +00:00
if err != nil {
return err
}
if !topicRegex.MatchString(m.Topic) {
2022-03-16 18:16:54 +00:00
return errHTTPBadRequestTopicInvalid
2022-03-15 20:00:59 +00:00
}
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 18:16:54 +00:00
if m.Priority != 0 {
r.Header.Set("X-Priority", fmt.Sprintf("%d", m.Priority))
2022-03-15 20:00:59 +00:00
}
2022-03-16 18:16:54 +00:00
if m.Tags != nil && len(m.Tags) > 0 {
r.Header.Set("X-Tags", strings.Join(m.Tags, ","))
2022-03-15 20:00:59 +00:00
}
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 19:31:03 +00:00
if m.Icon != "" {
r.Header.Set("X-Icon", m.Icon)
}
2022-04-16 20:17:58 +00:00
if len(m.Actions) > 0 {
actionsStr, err := json.Marshal(m.Actions)
if err != nil {
2022-12-29 14:57:42 +00:00
return errHTTPBadRequestMessageJSONInvalid
2022-04-16 20:17:58 +00:00
}
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 20:00:59 +00:00
return next(w, r, v)
}
}
2022-06-14 02:07:30 +00:00
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 02:07:30 +00:00
if err != nil {
return err
}
if err := next(w, newRequest, v); err != nil {
return &errMatrix{pushKey: newRequest.Header.Get(matrixPushKeyHeader), err: err}
2022-06-14 02:07:30 +00:00
}
return nil
}
}
2022-12-03 20:20:59 +00:00
func (s *Server) authorizeTopicWrite(next handleFunc) handleFunc {
return s.autorizeTopic(next, user.PermissionWrite)
2022-01-22 03:22:27 +00:00
}
2022-12-03 20:20:59 +00:00
func (s *Server) authorizeTopicRead(next handleFunc) handleFunc {
return s.autorizeTopic(next, user.PermissionRead)
2022-01-22 03:22:27 +00:00
}
func (s *Server) autorizeTopic(next handleFunc, perm user.Permission) handleFunc {
2022-01-22 03:22:27 +00:00
return func(w http.ResponseWriter, r *http.Request, v *visitor) error {
if s.userManager == nil {
2022-01-22 03:22:27 +00:00
return next(w, r, v)
}
2022-01-27 17:49:05 +00:00
topics, _, err := s.topicsFromPath(r.URL.Path)
2022-01-22 03:22:27 +00:00
if err != nil {
return err
}
2023-01-28 14:03:14 +00:00
u := v.User()
2022-01-27 17:49:05 +00:00
for _, t := range topics {
2023-01-28 14:03:14 +00:00
if err := s.userManager.Authorize(u, t.ID, perm); err != nil {
2022-05-30 02:14:14 +00:00
log.Info("unauthorized: %s", err.Error())
2022-01-27 17:49:05 +00:00
return errHTTPForbidden
}
2022-01-22 03:22:27 +00:00
}
return next(w, r, v)
}
}
2023-01-27 03:57:18 +00:00
// maybeAuthenticate creates or retrieves a rate.Limiter for the given visitor.
2022-12-02 20:37:48 +00:00
// Note that this function will always return a visitor, even if an error occurs.
2023-01-27 03:57:18 +00:00
func (s *Server) maybeAuthenticate(r *http.Request) (v *visitor, err error) {
2022-12-22 02:55:39 +00:00
ip := extractIPAddress(r, s.config.BehindProxy)
2022-12-28 03:14:14 +00:00
var u *user.User // may stay nil if no auth header!
if u, err = s.authenticate(r); err != nil {
2022-12-03 20:20:59 +00:00
log.Debug("authentication failed: %s", err.Error())
err = errHTTPUnauthorized // Always return visitor, even when error occurs!
}
2023-01-27 03:57:18 +00:00
v = s.visitor(ip, u)
v.SetUser(u) // Update visitor user with latest from database!
2022-12-02 20:37:48 +00:00
return v, err // Always return visitor, even when error occurs!
}
// 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
// query param is effectively double base64 encoded. Its format is base64(Basic base64(user:pass)).
func (s *Server) authenticate(r *http.Request) (user *user.User, err error) {
2022-12-28 03:14:14 +00:00
value := strings.TrimSpace(r.Header.Get("Authorization"))
2022-12-03 20:20:59 +00:00
queryParam := readQueryParam(r, "authorization", "auth")
if queryParam != "" {
a, err := base64.RawURLEncoding.DecodeString(queryParam)
if err != nil {
return nil, err
}
2022-12-28 03:14:14 +00:00
value = strings.TrimSpace(string(a))
2022-12-03 20:20:59 +00:00
}
if value == "" {
return nil, nil
2022-12-28 03:14:14 +00:00
} else if s.userManager == nil {
return nil, errHTTPUnauthorized
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}
if strings.HasPrefix(value, "Bearer") {
2023-01-29 21:15:08 +00:00
return s.authenticateBearerAuth(r, strings.TrimSpace(strings.TrimPrefix(value, "Bearer")))
2022-12-03 20:20:59 +00:00
}
return s.authenticateBasicAuth(r, value)
}
func (s *Server) authenticateBasicAuth(r *http.Request, value string) (user *user.User, err error) {
2022-12-03 20:20:59 +00:00
r.Header.Set("Authorization", value)
username, password, ok := r.BasicAuth()
if !ok {
return nil, errors.New("invalid basic auth")
2023-01-29 21:15:08 +00:00
} else if username == "" {
return s.authenticateBearerAuth(r, password) // Treat password as token
2022-12-03 20:20:59 +00:00
}
return s.userManager.Authenticate(username, password)
2022-12-03 20:20:59 +00:00
}
2023-01-29 21:15:08 +00:00
func (s *Server) authenticateBearerAuth(r *http.Request, token string) (*user.User, error) {
2023-01-29 01:29:06 +00:00
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 20:20:59 +00:00
}
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func (s *Server) visitor(ip netip.Addr, user *user.User) *visitor {
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s.mu.Lock()
defer s.mu.Unlock()
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id := visitorID(ip, user)
v, exists := s.visitors[id]
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if !exists {
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s.visitors[id] = newVisitor(s.config, s.messageCache, s.userManager, ip, user)
return s.visitors[id]
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}
v.Keepalive()
return v
}
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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
}