package main
import (
"errors"
"log"
"net/http"
"strconv"
"strings"
"./common"
)
// TODO: Make this a static file somehow? Is it possible for us to put this file somewhere else?
// TODO: Add an API so that plugins can register disallowed areas. E.g. /guilds/join for plugin_guilds
func routeRobotsTxt(w http.ResponseWriter, r *http.Request) common.RouteError {
_, _ = w.Write([]byte(`User-agent: *
Disallow: /panel/
Disallow: /topics/create/
Disallow: /user/edit/
Disallow: /accounts/
Disallow: /report/
`))
return nil
}
var sitemapPageCap = 40000 // 40k, bump it up to 50k once we gzip this? Does brotli work on sitemaps?
func writeXMLHeader(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/xml")
w.Write([]byte("\n"))
}
// TODO: Keep track of when a sitemap was last modifed and add a lastmod element for it
func routeSitemapXml(w http.ResponseWriter, r *http.Request) common.RouteError {
var sslBit string
if common.Site.EnableSsl {
sslBit = "s"
}
var sitemapItem = func(path string) {
w.Write([]byte(`
http` + sslBit + `://` + common.Site.URL + "/" + path + `
`))
}
writeXMLHeader(w, r)
w.Write([]byte("\n"))
sitemapItem("sitemaps/topics.xml")
//sitemapItem("sitemaps/forums.xml")
//sitemapItem("sitemaps/users.xml")
w.Write([]byte(""))
return nil
}
type FuzzyRoute struct {
Path string
Handle func(http.ResponseWriter, *http.Request, int) common.RouteError
}
// TODO: Add a sitemap API and clean things up
// TODO: ^-- Make sure that the API is concurrent
// TODO: Add a social group sitemap
var sitemapRoutes = map[string]func(http.ResponseWriter, *http.Request) common.RouteError{
"forums.xml": routeSitemapForums,
"topics.xml": routeSitemapTopics,
}
// TODO: Use a router capable of parsing this rather than hard-coding the logic in
var fuzzySitemapRoutes = map[string]FuzzyRoute{
"topics_page_": FuzzyRoute{"topics_page_(%d).xml", routeSitemapTopic},
}
func sitemapSwitch(w http.ResponseWriter, r *http.Request) common.RouteError {
var path = r.URL.Path[len("/sitemaps/"):]
for name, fuzzy := range fuzzySitemapRoutes {
if strings.HasPrefix(path, name) && strings.HasSuffix(path, ".xml") {
var spath = strings.TrimPrefix(path, name)
spath = strings.TrimSuffix(spath, ".xml")
page, err := strconv.Atoi(spath)
if err != nil {
if common.Dev.DebugMode {
log.Printf("Unable to convert string '%s' to integer in fuzzy route", spath)
}
return common.NotFound(w, r)
}
return fuzzy.Handle(w, r, page)
}
}
route, ok := sitemapRoutes[path]
if !ok {
return common.NotFound(w, r)
}
return route(w, r)
}
func routeSitemapForums(w http.ResponseWriter, r *http.Request) common.RouteError {
var sslBit string
if common.Site.EnableSsl {
sslBit = "s"
}
var sitemapItem = func(path string) {
w.Write([]byte(`
http` + sslBit + `://` + common.Site.URL + path + `
`))
}
group, err := common.Groups.Get(common.GuestUser.Group)
if err != nil {
return common.SilentInternalErrorXML(errors.New("The guest group doesn't exist for some reason"), w, r)
}
writeXMLHeader(w, r)
w.Write([]byte("\n"))
for _, fid := range group.CanSee {
// Avoid data races by copying the struct into something we can freely mold without worrying about breaking something somewhere else
var forum = common.Forums.DirtyGet(fid).Copy()
if forum.ParentID == 0 && forum.Name != "" && forum.Active {
sitemapItem(common.BuildForumURL(common.NameToSlug(forum.Name), forum.ID))
}
}
w.Write([]byte(""))
return nil
}
// TODO: Add a global ratelimit. 10 50MB files (smaller if compressed better) per minute?
// ? We might have problems with banned users, if they have fewer ViewTopic permissions than guests as they'll be able to see this list. Then again, a banned user could just logout to see it
func routeSitemapTopics(w http.ResponseWriter, r *http.Request) common.RouteError {
var sslBit string
if common.Site.EnableSsl {
sslBit = "s"
}
var sitemapItem = func(path string) {
w.Write([]byte(`
http` + sslBit + `://` + common.Site.URL + "/" + path + `
`))
}
group, err := common.Groups.Get(common.GuestUser.Group)
if err != nil {
return common.SilentInternalErrorXML(errors.New("The guest group doesn't exist for some reason"), w, r)
}
var visibleForums []common.Forum
for _, fid := range group.CanSee {
forum := common.Forums.DirtyGet(fid)
if forum.Name != "" && forum.Active {
visibleForums = append(visibleForums, forum.Copy())
}
}
topicCount, err := common.TopicCountInForums(visibleForums)
if err != nil {
return common.InternalErrorXML(err, w, r)
}
var pageCount = topicCount / sitemapPageCap
//log.Print("topicCount", topicCount)
//log.Print("pageCount", pageCount)
writeXMLHeader(w, r)
w.Write([]byte("\n"))
for i := 0; i <= pageCount; i++ {
sitemapItem("sitemaps/topics_page_" + strconv.Itoa(i) + ".xml")
}
w.Write([]byte(""))
return nil
}
func routeSitemapTopic(w http.ResponseWriter, r *http.Request, page int) common.RouteError {
/*var sslBit string
if common.Site.EnableSsl {
sslBit = "s"
}
var sitemapItem = func(path string) {
w.Write([]byte(`
http` + sslBit + `://` + common.Site.URL + "/" + path + `
`))
}*/
group, err := common.Groups.Get(common.GuestUser.Group)
if err != nil {
return common.SilentInternalErrorXML(errors.New("The guest group doesn't exist for some reason"), w, r)
}
var visibleForums []common.Forum
for _, fid := range group.CanSee {
forum := common.Forums.DirtyGet(fid)
if forum.Name != "" && forum.Active {
visibleForums = append(visibleForums, forum.Copy())
}
}
argList, qlist := common.ForumListToArgQ(visibleForums)
topicCount, err := common.ArgQToTopicCount(argList, qlist)
if err != nil {
return common.InternalErrorXML(err, w, r)
}
var pageCount = topicCount / sitemapPageCap
//log.Print("topicCount", topicCount)
//log.Print("pageCount", pageCount)
//log.Print("page",page)
if page > pageCount {
page = pageCount
}
writeXMLHeader(w, r)
w.Write([]byte("\n"))
w.Write([]byte(""))
return nil
}
func routeSitemapUsers(w http.ResponseWriter, r *http.Request) common.RouteError {
writeXMLHeader(w, r)
w.Write([]byte("\n"))
return nil
}