(.+)
") ) func (p *Post) formatContent(cfg *config.Config, c *Collection, isOwner bool) { baseURL := c.CanonicalURL() // TODO: redundant if !isSingleUser { baseURL = "/" + c.Alias + "/" } p.HTMLTitle = template.HTML(applyBasicMarkdown([]byte(p.Title.String))) p.HTMLContent = template.HTML(applyMarkdown([]byte(p.Content), baseURL, cfg)) if exc := strings.Index(string(p.Content), ""); exc > -1 { p.HTMLExcerpt = template.HTML(applyMarkdown([]byte(p.Content[:exc]), baseURL, cfg)) } } func (p *PublicPost) formatContent(cfg *config.Config, isOwner bool) { p.Post.formatContent(cfg, &p.Collection.Collection, isOwner) } func applyMarkdown(data []byte, baseURL string, cfg *config.Config) string { return applyMarkdownSpecial(data, false, baseURL, cfg) } func applyMarkdownSpecial(data []byte, skipNoFollow bool, baseURL string, cfg *config.Config) string { mdExtensions := 0 | blackfriday.EXTENSION_TABLES | blackfriday.EXTENSION_FENCED_CODE | blackfriday.EXTENSION_AUTOLINK | blackfriday.EXTENSION_STRIKETHROUGH | blackfriday.EXTENSION_SPACE_HEADERS | blackfriday.EXTENSION_AUTO_HEADER_IDS htmlFlags := 0 | blackfriday.HTML_USE_SMARTYPANTS | blackfriday.HTML_SMARTYPANTS_DASHES if baseURL != "" { htmlFlags |= blackfriday.HTML_HASHTAGS } // Generate Markdown md := blackfriday.Markdown([]byte(data), blackfriday.HtmlRenderer(htmlFlags, "", ""), mdExtensions) if baseURL != "" { // Replace special text generated by Markdown parser tagPrefix := baseURL + "tag:" if cfg.App.Chorus { tagPrefix = "/read/t/" } md = []byte(hashtagReg.ReplaceAll(md, []byte("#$1"))) } // Strip out bad HTML policy := getSanitizationPolicy() policy.RequireNoFollowOnLinks(!skipNoFollow) outHTML := string(policy.SanitizeBytes(md)) // Strip newlines on certain block elements that render with them outHTML = blockReg.ReplaceAllString(outHTML, "<$1>") outHTML = endBlockReg.ReplaceAllString(outHTML, "") // Remove all query parameters on YouTube embed links // TODO: make this more specific. Taking the nuclear approach here to strip ?autoplay=1 outHTML = youtubeReg.ReplaceAllString(outHTML, "$1") return outHTML } func applyBasicMarkdown(data []byte) string { mdExtensions := 0 | blackfriday.EXTENSION_STRIKETHROUGH | blackfriday.EXTENSION_SPACE_HEADERS | blackfriday.EXTENSION_HEADER_IDS htmlFlags := 0 | blackfriday.HTML_SKIP_HTML | blackfriday.HTML_USE_SMARTYPANTS | blackfriday.HTML_SMARTYPANTS_DASHES // Generate Markdown md := blackfriday.Markdown([]byte(data), blackfriday.HtmlRenderer(htmlFlags, "", ""), mdExtensions) // Strip out bad HTML policy := bluemonday.UGCPolicy() policy.AllowAttrs("class", "id").Globally() outHTML := string(policy.SanitizeBytes(md)) outHTML = markeddownReg.ReplaceAllString(outHTML, "$1") outHTML = strings.TrimRightFunc(outHTML, unicode.IsSpace) return outHTML } func postTitle(content, friendlyId string) string { const maxTitleLen = 80 // Strip HTML tags with bluemonday's StrictPolicy, then unescape the HTML // entities added in by sanitizing the content. content = html.UnescapeString(bluemonday.StrictPolicy().Sanitize(content)) content = strings.TrimLeftFunc(stripmd.Strip(content), unicode.IsSpace) eol := strings.IndexRune(content, '\n') blankLine := strings.Index(content, "\n\n") if blankLine != -1 && blankLine <= eol && blankLine <= assumedTitleLen { return strings.TrimSpace(content[:blankLine]) } else if utf8.RuneCountInString(content) <= maxTitleLen { return content } return friendlyId } // TODO: fix duplicated code from postTitle. postTitle is a widely used func we // don't have time to investigate right now. func friendlyPostTitle(content, friendlyId string) string { const maxTitleLen = 80 // Strip HTML tags with bluemonday's StrictPolicy, then unescape the HTML // entities added in by sanitizing the content. content = html.UnescapeString(bluemonday.StrictPolicy().Sanitize(content)) content = strings.TrimLeftFunc(stripmd.Strip(content), unicode.IsSpace) eol := strings.IndexRune(content, '\n') blankLine := strings.Index(content, "\n\n") if blankLine != -1 && blankLine <= eol && blankLine <= assumedTitleLen { return strings.TrimSpace(content[:blankLine]) } else if eol == -1 && utf8.RuneCountInString(content) <= maxTitleLen { return content } title, truncd := parse.TruncToWord(parse.PostLede(content, true), maxTitleLen) if truncd { title += "..." } return title } func getSanitizationPolicy() *bluemonday.Policy { policy := bluemonday.UGCPolicy() policy.AllowAttrs("src", "style").OnElements("iframe", "video", "audio") policy.AllowAttrs("src", "type").OnElements("source") policy.AllowAttrs("frameborder", "width", "height").Matching(bluemonday.Integer).OnElements("iframe") policy.AllowAttrs("allowfullscreen").OnElements("iframe") policy.AllowAttrs("controls", "loop", "muted", "autoplay").OnElements("video") policy.AllowAttrs("controls", "loop", "muted", "autoplay", "preload").OnElements("audio") policy.AllowAttrs("target").OnElements("a") policy.AllowAttrs("title").OnElements("abbr") policy.AllowAttrs("style", "class", "id").Globally() policy.AllowURLSchemes("http", "https", "mailto", "xmpp") return policy } func sanitizePost(content string) string { return strings.Replace(content, "<", "<", -1) } // postDescription generates a description based on the given post content, // title, and post ID. This doesn't consider a V2 post field, `title` when // choosing what to generate. In case a post has a title, this function will // fail, and logic should instead be implemented to skip this when there's no // title, like so: // var desc string // if title == "" { // desc = postDescription(content, title, friendlyId) // } else { // desc = shortPostDescription(content) // } func postDescription(content, title, friendlyId string) string { maxLen := 140 if content == "" { content = "WriteFreely is a painless, simple, federated blogging platform." } else { fmtStr := "%s" truncation := 0 if utf8.RuneCountInString(content) > maxLen { // Post is longer than the max description, so let's show a better description fmtStr = "%s..." truncation = 3 } if title == friendlyId { // No specific title was found; simply truncate the post, starting at the beginning content = fmt.Sprintf(fmtStr, strings.Replace(stringmanip.Substring(content, 0, maxLen-truncation), "\n", " ", -1)) } else { // There was a title, so return a real description blankLine := strings.Index(content, "\n\n") if blankLine < 0 { blankLine = 0 } truncd := stringmanip.Substring(content, blankLine, blankLine+maxLen-truncation) contentNoNL := strings.Replace(truncd, "\n", " ", -1) content = strings.TrimSpace(fmt.Sprintf(fmtStr, contentNoNL)) } } return content } func shortPostDescription(content string) string { maxLen := 140 fmtStr := "%s" truncation := 0 if utf8.RuneCountInString(content) > maxLen { // Post is longer than the max description, so let's show a better description fmtStr = "%s..." truncation = 3 } return strings.TrimSpace(fmt.Sprintf(fmtStr, strings.Replace(stringmanip.Substring(content, 0, maxLen-truncation), "\n", " ", -1))) } + +func handleRenderMarkdown(app *App, w http.ResponseWriter, r *http.Request) error { + if !IsJSON(r) { + return impart.HTTPError{Status: http.StatusUnsupportedMediaType, Message: "Markdown API only supports JSON requests"} + } + + in := struct { + BaseURL string `json:"base_url"` + RawBody string `json:"raw_body"` + }{ + BaseURL: "", + } + + decoder := json.NewDecoder(r.Body) + err := decoder.Decode(&in) + if err != nil { + log.Error("Couldn't parse markdown JSON request: %v", err) + return ErrBadJSON + } + + out := struct { + Body string `json:"body"` + }{ + Body: applyMarkdown([]byte(in.RawBody), in.BaseURL, app.cfg), + } + + return impart.WriteSuccess(w, out, http.StatusOK) +} diff --git a/routes.go b/routes.go index a3d4a1c..18f8477 100644 --- a/routes.go +++ b/routes.go @@ -1,212 +1,214 @@ /* * Copyright © 2018-2019 A Bunch Tell LLC. * * This file is part of WriteFreely. * * WriteFreely is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License, included * in the LICENSE file in this source code package. */ package writefreely import ( "net/http" "path/filepath" "strings" "github.com/gorilla/mux" "github.com/writeas/go-webfinger" "github.com/writeas/web-core/log" "github.com/writefreely/go-nodeinfo" ) // InitStaticRoutes adds routes for serving static files. // TODO: this should just be a func, not method func (app *App) InitStaticRoutes(r *mux.Router) { // Handle static files fs := http.FileServer(http.Dir(filepath.Join(app.cfg.Server.StaticParentDir, staticDir))) app.shttp = http.NewServeMux() app.shttp.Handle("/", fs) r.PathPrefix("/").Handler(fs) } // InitRoutes adds dynamic routes for the given mux.Router. func InitRoutes(apper Apper, r *mux.Router) *mux.Router { // Create handler handler := NewWFHandler(apper) // Set up routes hostSubroute := apper.App().cfg.App.Host[strings.Index(apper.App().cfg.App.Host, "://")+3:] if apper.App().cfg.App.SingleUser { hostSubroute = "{domain}" } else { if strings.HasPrefix(hostSubroute, "localhost") { hostSubroute = "localhost" } } if apper.App().cfg.App.SingleUser { log.Info("Adding %s routes (single user)...", hostSubroute) } else { log.Info("Adding %s routes (multi-user)...", hostSubroute) } // Primary app routes write := r.PathPrefix("/").Subrouter() // Federation endpoint configurations wf := webfinger.Default(wfResolver{apper.App().db, apper.App().cfg}) wf.NoTLSHandler = nil // Federation endpoints // host-meta write.HandleFunc("/.well-known/host-meta", handler.Web(handleViewHostMeta, UserLevelReader)) // webfinger write.HandleFunc(webfinger.WebFingerPath, handler.LogHandlerFunc(http.HandlerFunc(wf.Webfinger))) // nodeinfo niCfg := nodeInfoConfig(apper.App().db, apper.App().cfg) ni := nodeinfo.NewService(*niCfg, nodeInfoResolver{apper.App().cfg, apper.App().db}) write.HandleFunc(nodeinfo.NodeInfoPath, handler.LogHandlerFunc(http.HandlerFunc(ni.NodeInfoDiscover))) write.HandleFunc(niCfg.InfoURL, handler.LogHandlerFunc(http.HandlerFunc(ni.NodeInfo))) configureSlackOauth(handler, write, apper.App()) configureWriteAsOauth(handler, write, apper.App()) // Set up dyamic page handlers // Handle auth auth := write.PathPrefix("/api/auth/").Subrouter() if apper.App().cfg.App.OpenRegistration { auth.HandleFunc("/signup", handler.All(apiSignup)).Methods("POST") } auth.HandleFunc("/login", handler.All(login)).Methods("POST") auth.HandleFunc("/read", handler.WebErrors(handleWebCollectionUnlock, UserLevelNone)).Methods("POST") auth.HandleFunc("/me", handler.All(handleAPILogout)).Methods("DELETE") // Handle logged in user sections me := write.PathPrefix("/me").Subrouter() me.HandleFunc("/", handler.Redirect("/me", UserLevelUser)) me.HandleFunc("/c", handler.Redirect("/me/c/", UserLevelUser)).Methods("GET") me.HandleFunc("/c/", handler.User(viewCollections)).Methods("GET") me.HandleFunc("/c/{collection}", handler.User(viewEditCollection)).Methods("GET") me.HandleFunc("/c/{collection}/stats", handler.User(viewStats)).Methods("GET") me.HandleFunc("/posts", handler.Redirect("/me/posts/", UserLevelUser)).Methods("GET") me.HandleFunc("/posts/", handler.User(viewArticles)).Methods("GET") me.HandleFunc("/posts/export.csv", handler.Download(viewExportPosts, UserLevelUser)).Methods("GET") me.HandleFunc("/posts/export.zip", handler.Download(viewExportPosts, UserLevelUser)).Methods("GET") me.HandleFunc("/posts/export.json", handler.Download(viewExportPosts, UserLevelUser)).Methods("GET") me.HandleFunc("/export", handler.User(viewExportOptions)).Methods("GET") me.HandleFunc("/export.json", handler.Download(viewExportFull, UserLevelUser)).Methods("GET") me.HandleFunc("/settings", handler.User(viewSettings)).Methods("GET") me.HandleFunc("/invites", handler.User(handleViewUserInvites)).Methods("GET") me.HandleFunc("/logout", handler.Web(viewLogout, UserLevelNone)).Methods("GET") write.HandleFunc("/api/me", handler.All(viewMeAPI)).Methods("GET") apiMe := write.PathPrefix("/api/me/").Subrouter() apiMe.HandleFunc("/", handler.All(viewMeAPI)).Methods("GET") apiMe.HandleFunc("/posts", handler.UserAPI(viewMyPostsAPI)).Methods("GET") apiMe.HandleFunc("/collections", handler.UserAPI(viewMyCollectionsAPI)).Methods("GET") apiMe.HandleFunc("/password", handler.All(updatePassphrase)).Methods("POST") apiMe.HandleFunc("/self", handler.All(updateSettings)).Methods("POST") apiMe.HandleFunc("/invites", handler.User(handleCreateUserInvite)).Methods("POST") // Sign up validation write.HandleFunc("/api/alias", handler.All(handleUsernameCheck)).Methods("POST") + write.HandleFunc("/api/markdown", handler.All(handleRenderMarkdown)).Methods("POST") + // Handle collections write.HandleFunc("/api/collections", handler.All(newCollection)).Methods("POST") apiColls := write.PathPrefix("/api/collections/").Subrouter() apiColls.HandleFunc("/{alias:[0-9a-zA-Z\\-]+}", handler.AllReader(fetchCollection)).Methods("GET") apiColls.HandleFunc("/{alias:[0-9a-zA-Z\\-]+}", handler.All(existingCollection)).Methods("POST", "DELETE") apiColls.HandleFunc("/{alias}/posts", handler.AllReader(fetchCollectionPosts)).Methods("GET") apiColls.HandleFunc("/{alias}/posts", handler.All(newPost)).Methods("POST") apiColls.HandleFunc("/{alias}/posts/{post}", handler.AllReader(fetchPost)).Methods("GET") apiColls.HandleFunc("/{alias}/posts/{post:[a-zA-Z0-9]{10}}", handler.All(existingPost)).Methods("POST") apiColls.HandleFunc("/{alias}/posts/{post}/{property}", handler.AllReader(fetchPostProperty)).Methods("GET") apiColls.HandleFunc("/{alias}/collect", handler.All(addPost)).Methods("POST") apiColls.HandleFunc("/{alias}/pin", handler.All(pinPost)).Methods("POST") apiColls.HandleFunc("/{alias}/unpin", handler.All(pinPost)).Methods("POST") apiColls.HandleFunc("/{alias}/inbox", handler.All(handleFetchCollectionInbox)).Methods("POST") apiColls.HandleFunc("/{alias}/outbox", handler.AllReader(handleFetchCollectionOutbox)).Methods("GET") apiColls.HandleFunc("/{alias}/following", handler.AllReader(handleFetchCollectionFollowing)).Methods("GET") apiColls.HandleFunc("/{alias}/followers", handler.AllReader(handleFetchCollectionFollowers)).Methods("GET") // Handle posts write.HandleFunc("/api/posts", handler.All(newPost)).Methods("POST") posts := write.PathPrefix("/api/posts/").Subrouter() posts.HandleFunc("/{post:[a-zA-Z0-9]{10}}", handler.AllReader(fetchPost)).Methods("GET") posts.HandleFunc("/{post:[a-zA-Z0-9]{10}}", handler.All(existingPost)).Methods("POST", "PUT") posts.HandleFunc("/{post:[a-zA-Z0-9]{10}}", handler.All(deletePost)).Methods("DELETE") posts.HandleFunc("/{post:[a-zA-Z0-9]{10}}/{property}", handler.AllReader(fetchPostProperty)).Methods("GET") posts.HandleFunc("/claim", handler.All(addPost)).Methods("POST") posts.HandleFunc("/disperse", handler.All(dispersePost)).Methods("POST") write.HandleFunc("/auth/signup", handler.Web(handleWebSignup, UserLevelNoneRequired)).Methods("POST") write.HandleFunc("/auth/login", handler.Web(webLogin, UserLevelNoneRequired)).Methods("POST") write.HandleFunc("/admin", handler.Admin(handleViewAdminDash)).Methods("GET") write.HandleFunc("/admin/users", handler.Admin(handleViewAdminUsers)).Methods("GET") write.HandleFunc("/admin/user/{username}", handler.Admin(handleViewAdminUser)).Methods("GET") write.HandleFunc("/admin/user/{username}/status", handler.Admin(handleAdminToggleUserStatus)).Methods("POST") write.HandleFunc("/admin/user/{username}/passphrase", handler.Admin(handleAdminResetUserPass)).Methods("POST") write.HandleFunc("/admin/pages", handler.Admin(handleViewAdminPages)).Methods("GET") write.HandleFunc("/admin/page/{slug}", handler.Admin(handleViewAdminPage)).Methods("GET") write.HandleFunc("/admin/update/config", handler.AdminApper(handleAdminUpdateConfig)).Methods("POST") write.HandleFunc("/admin/update/{page}", handler.Admin(handleAdminUpdateSite)).Methods("POST") // Handle special pages first write.HandleFunc("/login", handler.Web(viewLogin, UserLevelNoneRequired)) write.HandleFunc("/signup", handler.Web(handleViewLanding, UserLevelNoneRequired)) write.HandleFunc("/invite/{code}", handler.Web(handleViewInvite, UserLevelOptional)).Methods("GET") // TODO: show a reader-specific 404 page if the function is disabled write.HandleFunc("/read", handler.Web(viewLocalTimeline, UserLevelReader)) RouteRead(handler, UserLevelReader, write.PathPrefix("/read").Subrouter()) draftEditPrefix := "" if apper.App().cfg.App.SingleUser { draftEditPrefix = "/d" write.HandleFunc("/me/new", handler.Web(handleViewPad, UserLevelOptional)).Methods("GET") } else { write.HandleFunc("/new", handler.Web(handleViewPad, UserLevelOptional)).Methods("GET") } // All the existing stuff write.HandleFunc(draftEditPrefix+"/{action}/edit", handler.Web(handleViewPad, UserLevelOptional)).Methods("GET") write.HandleFunc(draftEditPrefix+"/{action}/meta", handler.Web(handleViewMeta, UserLevelOptional)).Methods("GET") // Collections if apper.App().cfg.App.SingleUser { RouteCollections(handler, write.PathPrefix("/").Subrouter()) } else { write.HandleFunc("/{prefix:[@~$!\\-+]}{collection}", handler.Web(handleViewCollection, UserLevelReader)) write.HandleFunc("/{collection}/", handler.Web(handleViewCollection, UserLevelReader)) RouteCollections(handler, write.PathPrefix("/{prefix:[@~$!\\-+]?}{collection}").Subrouter()) // Posts } write.HandleFunc(draftEditPrefix+"/{post}", handler.Web(handleViewPost, UserLevelOptional)) write.HandleFunc("/", handler.Web(handleViewHome, UserLevelOptional)) return r } func RouteCollections(handler *Handler, r *mux.Router) { r.HandleFunc("/page/{page:[0-9]+}", handler.Web(handleViewCollection, UserLevelReader)) r.HandleFunc("/tag:{tag}", handler.Web(handleViewCollectionTag, UserLevelReader)) r.HandleFunc("/tag:{tag}/feed/", handler.Web(ViewFeed, UserLevelReader)) r.HandleFunc("/tags/{tag}", handler.Web(handleViewCollectionTag, UserLevelReader)) r.HandleFunc("/sitemap.xml", handler.AllReader(handleViewSitemap)) r.HandleFunc("/feed/", handler.AllReader(ViewFeed)) r.HandleFunc("/{slug}", handler.CollectionPostOrStatic) r.HandleFunc("/{slug}/edit", handler.Web(handleViewPad, UserLevelUser)) r.HandleFunc("/{slug}/edit/meta", handler.Web(handleViewMeta, UserLevelUser)) r.HandleFunc("/{slug}/", handler.Web(handleCollectionPostRedirect, UserLevelReader)).Methods("GET") } func RouteRead(handler *Handler, readPerm UserLevelFunc, r *mux.Router) { r.HandleFunc("/api/posts", handler.Web(viewLocalTimelineAPI, readPerm)) r.HandleFunc("/p/{page}", handler.Web(viewLocalTimeline, readPerm)) r.HandleFunc("/feed/", handler.Web(viewLocalTimelineFeed, readPerm)) r.HandleFunc("/t/{tag}", handler.Web(viewLocalTimeline, readPerm)) r.HandleFunc("/a/{post}", handler.Web(handlePostIDRedirect, readPerm)) r.HandleFunc("/{author}", handler.Web(viewLocalTimeline, readPerm)) r.HandleFunc("/", handler.Web(viewLocalTimeline, readPerm)) }