132 lines
3.5 KiB
Go
132 lines
3.5 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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"path/filepath"
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"strings"
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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/core/data"
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"github.com/owncast/owncast/models"
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"github.com/owncast/owncast/router/middleware"
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"github.com/owncast/owncast/static"
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"github.com/owncast/owncast/utils"
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)
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// MetadataPage represents a server-rendered web page for bots and web scrapers.
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type MetadataPage struct {
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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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Summary string
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Name string
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Tags []string
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SocialHandles []models.SocialHandle
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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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if isIndexRequest {
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handleScraperMetadataPage(w, r)
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return
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}
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if utils.IsUserAgentAPlayer(r.UserAgent()) && isIndexRequest {
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http.Redirect(w, r, "/hls/stream.m3u8", http.StatusTemporaryRedirect)
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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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// Set a cache control max-age header
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middleware.SetCachingHeaders(w, r)
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// Set our global HTTP headers
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middleware.SetHeaders(w)
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serveWeb(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
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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, err := static.GetWebIndexTemplate()
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if err != nil {
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log.Errorln(err)
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w.WriteHeader(http.StatusInternalServerError)
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return
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}
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scheme := "http"
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if siteURL := data.GetServerURL(); siteURL != "" {
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if parsed, err := url.Parse(siteURL); err == nil && parsed.Scheme != "" {
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scheme = parsed.Scheme
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}
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}
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fullURL, err := url.Parse(fmt.Sprintf("%s://%s%s", scheme, r.Host, r.URL.Path))
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if err != nil {
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log.Errorln(err)
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}
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imageURL, err := url.Parse(fmt.Sprintf("%s://%s%s", scheme, r.Host, "/logo/external"))
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if err != nil {
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log.Errorln(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("%s://%s%s", scheme, 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(data.GetServerMetadataTags(), ",")
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metadata := MetadataPage{
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Name: data.GetServerName(),
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RequestedURL: fullURL.String(),
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Image: imageURL.String(),
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Summary: data.GetServerSummary(),
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Thumbnail: thumbnailURL,
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TagsString: tagsString,
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Tags: data.GetServerMetadataTags(),
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SocialHandles: data.GetSocialHandles(),
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}
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w.Header().Set("Content-Type", "text/html")
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if err := tmpl.Execute(w, metadata); err != nil {
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log.Errorln(err)
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}
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}
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