owncast/controllers/hls.go

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package controllers
import (
"net/http"
"path"
"path/filepath"
"strconv"
"strings"
"github.com/owncast/owncast/config"
"github.com/owncast/owncast/core"
"github.com/owncast/owncast/core/data"
"github.com/owncast/owncast/models"
"github.com/owncast/owncast/router/middleware"
"github.com/owncast/owncast/utils"
)
// HandleHLSRequest will manage all requests to HLS content.
func HandleHLSRequest(w http.ResponseWriter, r *http.Request) {
// Sanity check to limit requests to HLS file types.
if filepath.Ext(r.URL.Path) != ".m3u8" && filepath.Ext(r.URL.Path) != ".ts" {
w.WriteHeader(http.StatusNotFound)
return
}
requestedPath := r.URL.Path
relativePath := strings.Replace(requestedPath, "/hls/", "", 1)
fullPath := filepath.Join(config.HLSStoragePath, relativePath)
// If using external storage then only allow requests for the
// master playlist at stream.m3u8, no variants or segments.
if data.GetS3Config().Enabled && relativePath != "stream.m3u8" {
w.WriteHeader(http.StatusNotFound)
return
}
// Handle playlists
if path.Ext(r.URL.Path) == ".m3u8" {
// Playlists should never be cached.
middleware.DisableCache(w)
// Force the correct content type
w.Header().Set("Content-Type", "application/x-mpegURL")
// Use this as an opportunity to mark this viewer as active.
viewer := models.GenerateViewerFromRequest(r)
core.SetViewerActive(&viewer)
} else {
cacheTime := utils.GetCacheDurationSecondsForPath(relativePath)
w.Header().Set("Cache-Control", "public, max-age="+strconv.Itoa(cacheTime))
}
middleware.EnableCors(w)
http.ServeFile(w, r, fullPath)
}