104 lines
2.8 KiB
Go
104 lines
2.8 KiB
Go
package controllers
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import (
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"fmt"
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"net/http"
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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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"strings"
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"text/template"
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log "github.com/sirupsen/logrus"
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"github.com/owncast/owncast/config"
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"github.com/owncast/owncast/core"
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"github.com/owncast/owncast/router/middleware"
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"github.com/owncast/owncast/utils"
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)
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type MetadataPage struct {
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Config config.InstanceDetails
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RequestedURL string
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Image string
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Thumbnail string
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TagsString string
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}
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// IndexHandler handles the default index route.
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func IndexHandler(w http.ResponseWriter, r *http.Request) {
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middleware.EnableCors(&w)
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isIndexRequest := r.URL.Path == "/" || filepath.Base(r.URL.Path) == "index.html" || filepath.Base(r.URL.Path) == ""
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// For search engine bots and social scrapers return a special
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// server-rendered page.
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if utils.IsUserAgentABot(r.UserAgent()) && isIndexRequest {
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handleScraperMetadataPage(w, r)
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return
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}
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// If the ETags match then return a StatusNotModified
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if responseCode := middleware.ProcessEtags(w, r); responseCode != 0 {
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w.WriteHeader(responseCode)
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return
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}
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// If this is a directory listing request then return a 404
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info, err := os.Stat(path.Join(config.WebRoot, r.URL.Path))
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if err != nil || (info.IsDir() && !isIndexRequest) {
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w.WriteHeader(http.StatusNotFound)
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return
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}
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if path.Ext(r.URL.Path) == ".m3u8" {
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middleware.DisableCache(w)
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}
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// Set a cache control max-age header
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middleware.SetCachingHeaders(w, r)
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http.ServeFile(w, r, path.Join(config.WebRoot, r.URL.Path))
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}
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// Return a basic HTML page with server-rendered metadata from the config file
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// to give to Opengraph clients and web scrapers (bots, web crawlers, etc).
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func handleScraperMetadataPage(w http.ResponseWriter, r *http.Request) {
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tmpl := template.Must(template.ParseFiles(path.Join("static", "metadata.html")))
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fullURL, err := url.Parse(fmt.Sprintf("http://%s%s", r.Host, r.URL.Path))
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if err != nil {
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log.Panicln(err)
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}
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imageURL, err := url.Parse(fmt.Sprintf("http://%s%s", r.Host, config.Config.InstanceDetails.Logo))
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if err != nil {
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log.Panicln(err)
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}
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status := core.GetStatus()
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// If the thumbnail does not exist or we're offline then just use the logo image
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var thumbnailURL string
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if status.Online && utils.DoesFileExists(filepath.Join(config.WebRoot, "thumbnail.jpg")) {
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thumbnail, err := url.Parse(fmt.Sprintf("http://%s%s", r.Host, "/thumbnail.jpg"))
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if err != nil {
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log.Errorln(err)
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thumbnailURL = imageURL.String()
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} else {
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thumbnailURL = thumbnail.String()
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}
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} else {
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thumbnailURL = imageURL.String()
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}
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tagsString := strings.Join(config.Config.InstanceDetails.Tags, ",")
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metadata := MetadataPage{config.Config.InstanceDetails, fullURL.String(), imageURL.String(), thumbnailURL, tagsString}
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w.Header().Set("Content-Type", "text/html")
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err = tmpl.Execute(w, metadata)
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if err != nil {
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log.Panicln(err)
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}
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}
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