all repos — honk @ 573379224ab42c4fb6c19c7f30aa04032c9aad82

my fork of honk

web.go (view raw)

   1//
   2// Copyright (c) 2019 Ted Unangst <tedu@tedunangst.com>
   3//
   4// Permission to use, copy, modify, and distribute this software for any
   5// purpose with or without fee is hereby granted, provided that the above
   6// copyright notice and this permission notice appear in all copies.
   7//
   8// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15
  16package main
  17
  18import (
  19	"bytes"
  20	"database/sql"
  21	"fmt"
  22	"html/template"
  23	"io"
  24	"log"
  25	notrand "math/rand"
  26	"net/http"
  27	"net/url"
  28	"os"
  29	"os/signal"
  30	"regexp"
  31	"sort"
  32	"strconv"
  33	"strings"
  34	"syscall"
  35	"time"
  36
  37	"github.com/gorilla/mux"
  38	"humungus.tedunangst.com/r/webs/cache"
  39	"humungus.tedunangst.com/r/webs/httpsig"
  40	"humungus.tedunangst.com/r/webs/junk"
  41	"humungus.tedunangst.com/r/webs/login"
  42	"humungus.tedunangst.com/r/webs/rss"
  43	"humungus.tedunangst.com/r/webs/templates"
  44)
  45
  46var readviews *templates.Template
  47
  48var userSep = "u"
  49var honkSep = "h"
  50
  51var debugMode = false
  52
  53func getuserstyle(u *login.UserInfo) template.CSS {
  54	if u == nil {
  55		return ""
  56	}
  57	user, _ := butwhatabout(u.Username)
  58	css := template.CSS("")
  59	if user.Options.SkinnyCSS {
  60		css += "main { max-width: 700px; }\n"
  61	}
  62	return css
  63}
  64
  65func getmaplink(u *login.UserInfo) string {
  66	if u == nil {
  67		return "osm"
  68	}
  69	user, _ := butwhatabout(u.Username)
  70	ml := user.Options.MapLink
  71	if ml == "" {
  72		ml = "osm"
  73	}
  74	return ml
  75}
  76
  77func getInfo(r *http.Request) map[string]interface{} {
  78	u := login.GetUserInfo(r)
  79	templinfo := make(map[string]interface{})
  80	templinfo["StyleParam"] = getassetparam(viewDir + "/views/style.css")
  81	templinfo["LocalStyleParam"] = getassetparam(viewDir + "/views/local.css")
  82	templinfo["JSParam"] = getassetparam(viewDir + "/views/honkpage.js")
  83	templinfo["UserStyle"] = getuserstyle(u)
  84	templinfo["ServerName"] = serverName
  85	templinfo["IconName"] = iconName
  86	templinfo["UserInfo"] = u
  87	templinfo["UserSep"] = userSep
  88	if u != nil {
  89		var combos []string
  90		combocache.Get(u.UserID, &combos)
  91		templinfo["Combos"] = combos
  92	}
  93	return templinfo
  94}
  95
  96func homepage(w http.ResponseWriter, r *http.Request) {
  97	templinfo := getInfo(r)
  98	u := login.GetUserInfo(r)
  99	var honks []*Honk
 100	var userid int64 = -1
 101
 102	templinfo["ServerMessage"] = serverMsg
 103	if u == nil || r.URL.Path == "/front" {
 104		switch r.URL.Path {
 105		case "/events":
 106			honks = geteventhonks(userid)
 107			templinfo["ServerMessage"] = "some recent and upcoming events"
 108		default:
 109			templinfo["ShowRSS"] = true
 110			honks = getpublichonks()
 111		}
 112	} else {
 113		userid = u.UserID
 114		switch r.URL.Path {
 115		case "/atme":
 116			templinfo["ServerMessage"] = "at me!"
 117			templinfo["PageName"] = "atme"
 118			honks = gethonksforme(userid, 0)
 119			honks = osmosis(honks, userid, false)
 120		case "/longago":
 121			templinfo["ServerMessage"] = "long ago and far away!"
 122			templinfo["PageName"] = "longago"
 123			honks = gethonksfromlongago(userid, 0)
 124			honks = osmosis(honks, userid, false)
 125		case "/events":
 126			templinfo["ServerMessage"] = "some recent and upcoming events"
 127			templinfo["PageName"] = "events"
 128			honks = geteventhonks(userid)
 129			honks = osmosis(honks, userid, true)
 130		case "/first":
 131			templinfo["PageName"] = "first"
 132			honks = gethonksforuserfirstclass(userid, 0)
 133			honks = osmosis(honks, userid, true)
 134		case "/saved":
 135			templinfo["ServerMessage"] = "saved honks"
 136			templinfo["PageName"] = "saved"
 137			honks = getsavedhonks(userid, 0)
 138		default:
 139			templinfo["PageName"] = "home"
 140			honks = gethonksforuser(userid, 0)
 141			honks = osmosis(honks, userid, true)
 142		}
 143		templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
 144	}
 145
 146	honkpage(w, u, honks, templinfo)
 147}
 148
 149func showfunzone(w http.ResponseWriter, r *http.Request) {
 150	var emunames, memenames []string
 151	dir, err := os.Open(dataDir + "/emus")
 152	if err == nil {
 153		emunames, _ = dir.Readdirnames(0)
 154		dir.Close()
 155	}
 156	for i, e := range emunames {
 157		if len(e) > 4 {
 158			emunames[i] = e[:len(e)-4]
 159		}
 160	}
 161	dir, err = os.Open(dataDir + "/memes")
 162	if err == nil {
 163		memenames, _ = dir.Readdirnames(0)
 164		dir.Close()
 165	}
 166	templinfo := getInfo(r)
 167	templinfo["Emus"] = emunames
 168	templinfo["Memes"] = memenames
 169	err = readviews.Execute(w, "funzone.html", templinfo)
 170	if err != nil {
 171		log.Print(err)
 172	}
 173}
 174
 175func showrss(w http.ResponseWriter, r *http.Request) {
 176	name := mux.Vars(r)["name"]
 177
 178	var honks []*Honk
 179	if name != "" {
 180		honks = gethonksbyuser(name, false, 0)
 181	} else {
 182		honks = getpublichonks()
 183	}
 184	reverbolate(-1, honks)
 185
 186	home := fmt.Sprintf("https://%s/", serverName)
 187	base := home
 188	if name != "" {
 189		home += "u/" + name
 190		name += " "
 191	}
 192	feed := rss.Feed{
 193		Title:       name + "honk",
 194		Link:        home,
 195		Description: name + "honk rss",
 196		Image: &rss.Image{
 197			URL:   base + "icon.png",
 198			Title: name + "honk rss",
 199			Link:  home,
 200		},
 201	}
 202	var modtime time.Time
 203	for _, honk := range honks {
 204		if !firstclass(honk) {
 205			continue
 206		}
 207		desc := string(honk.HTML)
 208		if t := honk.Time; t != nil {
 209			desc += fmt.Sprintf(`<p>Time: %s`, t.StartTime.Local().Format("03:04PM EDT Mon Jan 02"))
 210			if t.Duration != 0 {
 211				desc += fmt.Sprintf(`<br>Duration: %s`, t.Duration)
 212			}
 213		}
 214		if p := honk.Place; p != nil {
 215			desc += string(templates.Sprintf(`<p>Location: <a href="%s">%s</a> %f %f`,
 216				p.Url, p.Name, p.Latitude, p.Longitude))
 217		}
 218		for _, d := range honk.Donks {
 219			desc += string(templates.Sprintf(`<p><a href="%s">Attachment: %s</a>`,
 220				d.URL, d.Desc))
 221			if strings.HasPrefix(d.Media, "image") {
 222				desc += string(templates.Sprintf(`<img src="%s">`, d.URL))
 223			}
 224		}
 225
 226		feed.Items = append(feed.Items, &rss.Item{
 227			Title:       fmt.Sprintf("%s %s %s", honk.Username, honk.What, honk.XID),
 228			Description: rss.CData{Data: desc},
 229			Link:        honk.URL,
 230			PubDate:     honk.Date.Format(time.RFC1123),
 231			Guid:        &rss.Guid{IsPermaLink: true, Value: honk.URL},
 232		})
 233		if honk.Date.After(modtime) {
 234			modtime = honk.Date
 235		}
 236	}
 237	if !debugMode {
 238		w.Header().Set("Cache-Control", "max-age=300")
 239		w.Header().Set("Last-Modified", modtime.Format(http.TimeFormat))
 240	}
 241
 242	err := feed.Write(w)
 243	if err != nil {
 244		log.Printf("error writing rss: %s", err)
 245	}
 246}
 247
 248func crappola(j junk.Junk) bool {
 249	t, _ := j.GetString("type")
 250	a, _ := j.GetString("actor")
 251	o, _ := j.GetString("object")
 252	if t == "Delete" && a == o {
 253		log.Printf("crappola from %s", a)
 254		return true
 255	}
 256	return false
 257}
 258
 259func ping(user *WhatAbout, who string) {
 260	var box *Box
 261	ok := boxofboxes.Get(who, &box)
 262	if !ok {
 263		log.Printf("no inbox to ping %s", who)
 264		return
 265	}
 266	j := junk.New()
 267	j["@context"] = itiswhatitis
 268	j["type"] = "Ping"
 269	j["id"] = user.URL + "/ping/" + xfiltrate()
 270	j["actor"] = user.URL
 271	j["to"] = who
 272	ki := ziggy(user.ID)
 273	if ki == nil {
 274		return
 275	}
 276	err := PostJunk(ki.keyname, ki.seckey, box.In, j)
 277	if err != nil {
 278		log.Printf("can't send ping: %s", err)
 279		return
 280	}
 281	log.Printf("sent ping to %s: %s", who, j["id"])
 282}
 283
 284func pong(user *WhatAbout, who string, obj string) {
 285	var box *Box
 286	ok := boxofboxes.Get(who, &box)
 287	if !ok {
 288		log.Printf("no inbox to pong %s", who)
 289		return
 290	}
 291	j := junk.New()
 292	j["@context"] = itiswhatitis
 293	j["type"] = "Pong"
 294	j["id"] = user.URL + "/pong/" + xfiltrate()
 295	j["actor"] = user.URL
 296	j["to"] = who
 297	j["object"] = obj
 298	ki := ziggy(user.ID)
 299	if ki == nil {
 300		return
 301	}
 302	err := PostJunk(ki.keyname, ki.seckey, box.In, j)
 303	if err != nil {
 304		log.Printf("can't send pong: %s", err)
 305		return
 306	}
 307}
 308
 309func inbox(w http.ResponseWriter, r *http.Request) {
 310	name := mux.Vars(r)["name"]
 311	user, err := butwhatabout(name)
 312	if err != nil {
 313		http.NotFound(w, r)
 314		return
 315	}
 316	if stealthmode(user.ID, r) {
 317		http.NotFound(w, r)
 318		return
 319	}
 320	var buf bytes.Buffer
 321	limiter := io.LimitReader(r.Body, 1*1024*1024)
 322	io.Copy(&buf, limiter)
 323	payload := buf.Bytes()
 324	j, err := junk.FromBytes(payload)
 325	if err != nil {
 326		log.Printf("bad payload: %s", err)
 327		io.WriteString(os.Stdout, "bad payload\n")
 328		os.Stdout.Write(payload)
 329		io.WriteString(os.Stdout, "\n")
 330		return
 331	}
 332
 333	if crappola(j) {
 334		return
 335	}
 336	what, _ := j.GetString("type")
 337	obj, _ := j.GetString("object")
 338	if what == "Like" || (what == "EmojiReact" && originate(obj) != serverName) {
 339		return
 340	}
 341	who, _ := j.GetString("actor")
 342	if rejectactor(user.ID, who) {
 343		return
 344	}
 345
 346	keyname, err := httpsig.VerifyRequest(r, payload, zaggy)
 347	if err != nil && keyname != "" {
 348		savingthrow(keyname)
 349		keyname, err = httpsig.VerifyRequest(r, payload, zaggy)
 350	}
 351	if err != nil {
 352		log.Printf("inbox message failed signature for %s from %s", keyname, r.Header.Get("X-Forwarded-For"))
 353		if keyname != "" {
 354			log.Printf("bad signature from %s", keyname)
 355			io.WriteString(os.Stdout, "bad payload\n")
 356			os.Stdout.Write(payload)
 357			io.WriteString(os.Stdout, "\n")
 358		}
 359		http.Error(w, "what did you call me?", http.StatusTeapot)
 360		return
 361	}
 362	origin := keymatch(keyname, who)
 363	if origin == "" {
 364		log.Printf("keyname actor mismatch: %s <> %s", keyname, who)
 365		return
 366	}
 367
 368	switch what {
 369	case "Ping":
 370		id, _ := j.GetString("id")
 371		log.Printf("ping from %s: %s", who, id)
 372		pong(user, who, obj)
 373	case "Pong":
 374		log.Printf("pong from %s: %s", who, obj)
 375	case "Follow":
 376		if obj != user.URL {
 377			log.Printf("can't follow %s", obj)
 378			return
 379		}
 380		log.Printf("updating honker follow: %s", who)
 381
 382		var x string
 383		db := opendatabase()
 384		row := db.QueryRow("select xid from honkers where xid = ? and userid = ? and flavor in ('dub', 'undub')", who, user.ID)
 385		err = row.Scan(&x)
 386		if err != sql.ErrNoRows {
 387			log.Printf("duplicate follow request: %s", who)
 388			_, err = stmtUpdateFlavor.Exec("dub", user.ID, who, who, "undub")
 389			if err != nil {
 390				log.Printf("error updating honker: %s", err)
 391			}
 392		} else {
 393			stmtSaveDub.Exec(user.ID, who, who, "dub")
 394		}
 395		go rubadubdub(user, j)
 396	case "Accept":
 397		log.Printf("updating honker accept: %s", who)
 398		var name string
 399		db := opendatabase()
 400		row := db.QueryRow("select name from honkers where userid = ? and xid = ? and flavor in ('presub')",
 401			user.ID, who)
 402		err := row.Scan(&name)
 403		if err != nil {
 404			log.Printf("can't get honker name: %s", err)
 405			return
 406		}
 407		_, err = stmtUpdateFlavor.Exec("sub", user.ID, who, name, "presub")
 408		if err != nil {
 409			log.Printf("error updating honker: %s", err)
 410			return
 411		}
 412	case "Update":
 413		obj, ok := j.GetMap("object")
 414		if ok {
 415			what, _ := obj.GetString("type")
 416			switch what {
 417			case "Person":
 418				return
 419			case "Question":
 420				return
 421			case "Note":
 422				go xonksaver(user, j, origin)
 423				return
 424			}
 425		}
 426		log.Printf("unknown Update activity")
 427		dumpactivity(j)
 428	case "Undo":
 429		obj, ok := j.GetMap("object")
 430		if !ok {
 431			log.Printf("unknown undo no object")
 432			return
 433		}
 434		what, _ := obj.GetString("type")
 435		switch what {
 436		case "Follow":
 437			log.Printf("updating honker undo: %s", who)
 438			_, err = stmtUpdateFlavor.Exec("undub", user.ID, who, who, "dub")
 439			if err != nil {
 440				log.Printf("error updating honker: %s", err)
 441				return
 442			}
 443		case "Announce":
 444			xid, _ := obj.GetString("object")
 445			log.Printf("undo announce: %s", xid)
 446		case "Like":
 447		default:
 448			log.Printf("unknown undo: %s", what)
 449		}
 450	default:
 451		go xonksaver(user, j, origin)
 452	}
 453}
 454
 455func serverinbox(w http.ResponseWriter, r *http.Request) {
 456	user := getserveruser()
 457	if stealthmode(user.ID, r) {
 458		http.NotFound(w, r)
 459		return
 460	}
 461	var buf bytes.Buffer
 462	io.Copy(&buf, r.Body)
 463	payload := buf.Bytes()
 464	j, err := junk.FromBytes(payload)
 465	if err != nil {
 466		log.Printf("bad payload: %s", err)
 467		io.WriteString(os.Stdout, "bad payload\n")
 468		os.Stdout.Write(payload)
 469		io.WriteString(os.Stdout, "\n")
 470		return
 471	}
 472	if crappola(j) {
 473		return
 474	}
 475	keyname, err := httpsig.VerifyRequest(r, payload, zaggy)
 476	if err != nil && keyname != "" {
 477		savingthrow(keyname)
 478		keyname, err = httpsig.VerifyRequest(r, payload, zaggy)
 479	}
 480	if err != nil {
 481		log.Printf("inbox message failed signature for %s from %s", keyname, r.Header.Get("X-Forwarded-For"))
 482		if keyname != "" {
 483			log.Printf("bad signature from %s", keyname)
 484			io.WriteString(os.Stdout, "bad payload\n")
 485			os.Stdout.Write(payload)
 486			io.WriteString(os.Stdout, "\n")
 487		}
 488		http.Error(w, "what did you call me?", http.StatusTeapot)
 489		return
 490	}
 491	who, _ := j.GetString("actor")
 492	origin := keymatch(keyname, who)
 493	if origin == "" {
 494		log.Printf("keyname actor mismatch: %s <> %s", keyname, who)
 495		return
 496	}
 497	if rejectactor(user.ID, who) {
 498		return
 499	}
 500	re_ont := regexp.MustCompile("https://" + serverName + "/o/([[:alnum:]]+)")
 501	what, _ := j.GetString("type")
 502	log.Printf("server got a %s", what)
 503	switch what {
 504	case "Follow":
 505		obj, _ := j.GetString("object")
 506		if obj == user.URL {
 507			log.Printf("can't follow the server!")
 508			return
 509		}
 510		m := re_ont.FindStringSubmatch(obj)
 511		if len(m) != 2 {
 512			log.Printf("not sure how to handle this")
 513			return
 514		}
 515		ont := "#" + m[1]
 516		log.Printf("%s wants to follow %s", who, ont)
 517		var x string
 518		db := opendatabase()
 519		row := db.QueryRow("select xid from honkers where name = ? and xid = ? and userid = ? and flavor in ('dub', 'undub')", ont, who, user.ID)
 520		err = row.Scan(&x)
 521		if err != sql.ErrNoRows {
 522			log.Printf("duplicate follow request: %s", who)
 523			_, err = stmtUpdateFlavor.Exec("dub", user.ID, who, ont, "undub")
 524			if err != nil {
 525				log.Printf("error updating honker: %s", err)
 526			}
 527		} else {
 528			stmtSaveDub.Exec(user.ID, ont, who, "dub")
 529		}
 530		go rubadubdub(user, j)
 531	case "Undo":
 532		obj, ok := j.GetMap("object")
 533		if !ok {
 534			log.Printf("unknown undo no object")
 535			return
 536		}
 537		what, _ := obj.GetString("type")
 538		if what != "Follow" {
 539			log.Printf("unknown undo: %s", what)
 540		}
 541		targ, _ := obj.GetString("object")
 542		m := re_ont.FindStringSubmatch(targ)
 543		if len(m) != 2 {
 544			log.Printf("not sure how to handle this")
 545			return
 546		}
 547		ont := "#" + m[1]
 548		log.Printf("updating honker undo: %s %s", who, ont)
 549		_, err = stmtUpdateFlavor.Exec("undub", user.ID, who, ont, "dub")
 550		if err != nil {
 551			log.Printf("error updating honker: %s", err)
 552			return
 553		}
 554	default:
 555		log.Printf("unhandled server activity: %s", what)
 556		dumpactivity(j)
 557	}
 558}
 559
 560func serveractor(w http.ResponseWriter, r *http.Request) {
 561	user := getserveruser()
 562	if stealthmode(user.ID, r) {
 563		http.NotFound(w, r)
 564		return
 565	}
 566	j := junkuser(user)
 567	j.Write(w)
 568}
 569
 570func ximport(w http.ResponseWriter, r *http.Request) {
 571	u := login.GetUserInfo(r)
 572	xid := strings.TrimSpace(r.FormValue("xid"))
 573	xonk := getxonk(u.UserID, xid)
 574	if xonk == nil {
 575		p, _ := investigate(xid)
 576		if p != nil {
 577			xid = p.XID
 578		}
 579		j, err := GetJunk(xid)
 580		if err != nil {
 581			http.Error(w, "error getting external object", http.StatusInternalServerError)
 582			log.Printf("error getting external object: %s", err)
 583			return
 584		}
 585		allinjest(originate(xid), j)
 586		log.Printf("importing %s", xid)
 587		user, _ := butwhatabout(u.Username)
 588
 589		info, _ := somethingabout(j)
 590		if info == nil {
 591			xonk = xonksaver(user, j, originate(xid))
 592		} else if info.What == SomeActor {
 593			outbox, _ := j.GetString("outbox")
 594			gimmexonks(user, outbox)
 595			http.Redirect(w, r, "/h?xid="+url.QueryEscape(xid), http.StatusSeeOther)
 596			return
 597		} else if info.What == SomeCollection {
 598			gimmexonks(user, xid)
 599			http.Redirect(w, r, "/xzone", http.StatusSeeOther)
 600			return
 601		}
 602	}
 603	convoy := ""
 604	if xonk != nil {
 605		convoy = xonk.Convoy
 606	}
 607	http.Redirect(w, r, "/t?c="+url.QueryEscape(convoy), http.StatusSeeOther)
 608}
 609
 610func xzone(w http.ResponseWriter, r *http.Request) {
 611	u := login.GetUserInfo(r)
 612	rows, err := stmtRecentHonkers.Query(u.UserID, u.UserID)
 613	if err != nil {
 614		log.Printf("query err: %s", err)
 615		return
 616	}
 617	defer rows.Close()
 618	var honkers []Honker
 619	for rows.Next() {
 620		var xid string
 621		rows.Scan(&xid)
 622		honkers = append(honkers, Honker{XID: xid})
 623	}
 624	rows.Close()
 625	for i, _ := range honkers {
 626		_, honkers[i].Handle = handles(honkers[i].XID)
 627	}
 628	templinfo := getInfo(r)
 629	templinfo["XCSRF"] = login.GetCSRF("ximport", r)
 630	templinfo["Honkers"] = honkers
 631	err = readviews.Execute(w, "xzone.html", templinfo)
 632	if err != nil {
 633		log.Print(err)
 634	}
 635}
 636
 637var oldoutbox = cache.New(cache.Options{Filler: func(name string) ([]byte, bool) {
 638	user, err := butwhatabout(name)
 639	if err != nil {
 640		return nil, false
 641	}
 642	honks := gethonksbyuser(name, false, 0)
 643	if len(honks) > 20 {
 644		honks = honks[0:20]
 645	}
 646
 647	var jonks []junk.Junk
 648	for _, h := range honks {
 649		j, _ := jonkjonk(user, h)
 650		jonks = append(jonks, j)
 651	}
 652
 653	j := junk.New()
 654	j["@context"] = itiswhatitis
 655	j["id"] = user.URL + "/outbox"
 656	j["attributedTo"] = user.URL
 657	j["type"] = "OrderedCollection"
 658	j["totalItems"] = len(jonks)
 659	j["orderedItems"] = jonks
 660
 661	return j.ToBytes(), true
 662}, Duration: 1 * time.Minute})
 663
 664func outbox(w http.ResponseWriter, r *http.Request) {
 665	name := mux.Vars(r)["name"]
 666	user, err := butwhatabout(name)
 667	if err != nil {
 668		http.NotFound(w, r)
 669		return
 670	}
 671	if stealthmode(user.ID, r) {
 672		http.NotFound(w, r)
 673		return
 674	}
 675	var j []byte
 676	ok := oldoutbox.Get(name, &j)
 677	if ok {
 678		w.Header().Set("Content-Type", theonetruename)
 679		w.Write(j)
 680	} else {
 681		http.NotFound(w, r)
 682	}
 683}
 684
 685var oldempties = cache.New(cache.Options{Filler: func(url string) ([]byte, bool) {
 686	colname := "/followers"
 687	if strings.HasSuffix(url, "/following") {
 688		colname = "/following"
 689	}
 690	user := fmt.Sprintf("https://%s%s", serverName, url[:len(url)-10])
 691	j := junk.New()
 692	j["@context"] = itiswhatitis
 693	j["id"] = user + colname
 694	j["attributedTo"] = user
 695	j["type"] = "OrderedCollection"
 696	j["totalItems"] = 0
 697	j["orderedItems"] = []junk.Junk{}
 698
 699	return j.ToBytes(), true
 700}})
 701
 702func emptiness(w http.ResponseWriter, r *http.Request) {
 703	name := mux.Vars(r)["name"]
 704	user, err := butwhatabout(name)
 705	if err != nil {
 706		http.NotFound(w, r)
 707		return
 708	}
 709	if stealthmode(user.ID, r) {
 710		http.NotFound(w, r)
 711		return
 712	}
 713	var j []byte
 714	ok := oldempties.Get(r.URL.Path, &j)
 715	if ok {
 716		w.Header().Set("Content-Type", theonetruename)
 717		w.Write(j)
 718	} else {
 719		http.NotFound(w, r)
 720	}
 721}
 722
 723func showuser(w http.ResponseWriter, r *http.Request) {
 724	name := mux.Vars(r)["name"]
 725	user, err := butwhatabout(name)
 726	if err != nil {
 727		log.Printf("user not found %s: %s", name, err)
 728		http.NotFound(w, r)
 729		return
 730	}
 731	if stealthmode(user.ID, r) {
 732		http.NotFound(w, r)
 733		return
 734	}
 735	if friendorfoe(r.Header.Get("Accept")) {
 736		j, ok := asjonker(name)
 737		if ok {
 738			w.Header().Set("Content-Type", theonetruename)
 739			w.Write(j)
 740		} else {
 741			http.NotFound(w, r)
 742		}
 743		return
 744	}
 745	u := login.GetUserInfo(r)
 746	honks := gethonksbyuser(name, u != nil && u.Username == name, 0)
 747	templinfo := getInfo(r)
 748	templinfo["Name"] = user.Name
 749	whatabout := user.About
 750	whatabout = markitzero(user.About)
 751	templinfo["WhatAbout"] = template.HTML(whatabout)
 752	templinfo["ServerMessage"] = ""
 753	templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
 754	honkpage(w, u, honks, templinfo)
 755}
 756
 757func showhonker(w http.ResponseWriter, r *http.Request) {
 758	u := login.GetUserInfo(r)
 759	name := mux.Vars(r)["name"]
 760	var honks []*Honk
 761	if name == "" {
 762		name = r.FormValue("xid")
 763		honks = gethonksbyxonker(u.UserID, name, 0)
 764	} else {
 765		honks = gethonksbyhonker(u.UserID, name, 0)
 766	}
 767	msg := templates.Sprintf(`honks by honker: <a href="%s" ref="noreferrer">%s</a>`, name, name)
 768	templinfo := getInfo(r)
 769	templinfo["PageName"] = "honker"
 770	templinfo["PageArg"] = name
 771	templinfo["ServerMessage"] = msg
 772	templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
 773	honkpage(w, u, honks, templinfo)
 774}
 775
 776func showcombo(w http.ResponseWriter, r *http.Request) {
 777	name := mux.Vars(r)["name"]
 778	u := login.GetUserInfo(r)
 779	honks := gethonksbycombo(u.UserID, name, 0)
 780	honks = osmosis(honks, u.UserID, true)
 781	templinfo := getInfo(r)
 782	templinfo["PageName"] = "combo"
 783	templinfo["PageArg"] = name
 784	templinfo["ServerMessage"] = "honks by combo: " + name
 785	templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
 786	honkpage(w, u, honks, templinfo)
 787}
 788func showconvoy(w http.ResponseWriter, r *http.Request) {
 789	c := r.FormValue("c")
 790	u := login.GetUserInfo(r)
 791	honks := gethonksbyconvoy(u.UserID, c, 0)
 792	templinfo := getInfo(r)
 793	if len(honks) > 0 {
 794		templinfo["TopHID"] = honks[0].ID
 795	}
 796	honks = osmosis(honks, u.UserID, false)
 797	reversehonks(honks)
 798	templinfo["PageName"] = "convoy"
 799	templinfo["PageArg"] = c
 800	templinfo["ServerMessage"] = "honks in convoy: " + c
 801	templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
 802	honkpage(w, u, honks, templinfo)
 803}
 804func showsearch(w http.ResponseWriter, r *http.Request) {
 805	q := r.FormValue("q")
 806	u := login.GetUserInfo(r)
 807	honks := gethonksbysearch(u.UserID, q, 0)
 808	templinfo := getInfo(r)
 809	templinfo["PageName"] = "search"
 810	templinfo["PageArg"] = q
 811	templinfo["ServerMessage"] = "honks for search: " + q
 812	templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
 813	honkpage(w, u, honks, templinfo)
 814}
 815func showontology(w http.ResponseWriter, r *http.Request) {
 816	name := mux.Vars(r)["name"]
 817	u := login.GetUserInfo(r)
 818	var userid int64 = -1
 819	if u != nil {
 820		userid = u.UserID
 821	}
 822	honks := gethonksbyontology(userid, "#"+name, 0)
 823	if friendorfoe(r.Header.Get("Accept")) {
 824		if len(honks) > 40 {
 825			honks = honks[0:40]
 826		}
 827
 828		var xids []string
 829		for _, h := range honks {
 830			xids = append(xids, h.XID)
 831		}
 832
 833		user := getserveruser()
 834
 835		j := junk.New()
 836		j["@context"] = itiswhatitis
 837		j["id"] = fmt.Sprintf("https://%s/o/%s", serverName, name)
 838		j["name"] = "#" + name
 839		j["attributedTo"] = user.URL
 840		j["type"] = "OrderedCollection"
 841		j["totalItems"] = len(xids)
 842		j["orderedItems"] = xids
 843
 844		j.Write(w)
 845		return
 846	}
 847
 848	templinfo := getInfo(r)
 849	templinfo["ServerMessage"] = "honks by ontology: " + name
 850	templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
 851	honkpage(w, u, honks, templinfo)
 852}
 853
 854type Ont struct {
 855	Name  string
 856	Count int64
 857}
 858
 859func thelistingoftheontologies(w http.ResponseWriter, r *http.Request) {
 860	u := login.GetUserInfo(r)
 861	var userid int64 = -1
 862	if u != nil {
 863		userid = u.UserID
 864	}
 865	rows, err := stmtAllOnts.Query(userid)
 866	if err != nil {
 867		log.Printf("selection error: %s", err)
 868		return
 869	}
 870	defer rows.Close()
 871	var onts []Ont
 872	for rows.Next() {
 873		var o Ont
 874		err := rows.Scan(&o.Name, &o.Count)
 875		if err != nil {
 876			log.Printf("error scanning ont: %s", err)
 877			continue
 878		}
 879		if len(o.Name) > 24 {
 880			continue
 881		}
 882		o.Name = o.Name[1:]
 883		onts = append(onts, o)
 884	}
 885	sort.Slice(onts, func(i, j int) bool {
 886		return onts[i].Name < onts[j].Name
 887	})
 888	if u == nil && !debugMode {
 889		w.Header().Set("Cache-Control", "max-age=300")
 890	}
 891	templinfo := getInfo(r)
 892	templinfo["Onts"] = onts
 893	err = readviews.Execute(w, "onts.html", templinfo)
 894	if err != nil {
 895		log.Print(err)
 896	}
 897}
 898
 899type Track struct {
 900	xid string
 901	who string
 902}
 903
 904func getbacktracks(xid string) []string {
 905	c := make(chan bool)
 906	dumptracks <- c
 907	<-c
 908	row := stmtGetTracks.QueryRow(xid)
 909	var rawtracks string
 910	err := row.Scan(&rawtracks)
 911	if err != nil {
 912		if err != sql.ErrNoRows {
 913			log.Printf("error scanning tracks: %s", err)
 914		}
 915		return nil
 916	}
 917	var rcpts []string
 918	for _, f := range strings.Split(rawtracks, " ") {
 919		idx := strings.LastIndexByte(f, '#')
 920		if idx != -1 {
 921			f = f[:idx]
 922		}
 923		if !strings.HasPrefix(f, "https://") {
 924			f = fmt.Sprintf("%%https://%s/inbox", f)
 925		}
 926		rcpts = append(rcpts, f)
 927	}
 928	return rcpts
 929}
 930
 931func savetracks(tracks map[string][]string) {
 932	db := opendatabase()
 933	tx, err := db.Begin()
 934	if err != nil {
 935		log.Printf("savetracks begin error: %s", err)
 936		return
 937	}
 938	defer func() {
 939		err := tx.Commit()
 940		if err != nil {
 941			log.Printf("savetracks commit error: %s", err)
 942		}
 943
 944	}()
 945	stmtGetTracks, err := tx.Prepare("select fetches from tracks where xid = ?")
 946	if err != nil {
 947		log.Printf("savetracks error: %s", err)
 948		return
 949	}
 950	stmtNewTracks, err := tx.Prepare("insert into tracks (xid, fetches) values (?, ?)")
 951	if err != nil {
 952		log.Printf("savetracks error: %s", err)
 953		return
 954	}
 955	stmtUpdateTracks, err := tx.Prepare("update tracks set fetches = ? where xid = ?")
 956	if err != nil {
 957		log.Printf("savetracks error: %s", err)
 958		return
 959	}
 960	count := 0
 961	for xid, f := range tracks {
 962		count += len(f)
 963		var prev string
 964		row := stmtGetTracks.QueryRow(xid)
 965		err := row.Scan(&prev)
 966		if err == sql.ErrNoRows {
 967			f = oneofakind(f)
 968			stmtNewTracks.Exec(xid, strings.Join(f, " "))
 969		} else if err == nil {
 970			all := append(strings.Split(prev, " "), f...)
 971			all = oneofakind(all)
 972			stmtUpdateTracks.Exec(strings.Join(all, " "))
 973		} else {
 974			log.Printf("savetracks error: %s", err)
 975		}
 976	}
 977	log.Printf("saved %d new fetches", count)
 978}
 979
 980var trackchan = make(chan Track)
 981var dumptracks = make(chan chan bool)
 982
 983func tracker() {
 984	timeout := 4 * time.Minute
 985	sleeper := time.NewTimer(timeout)
 986	tracks := make(map[string][]string)
 987	workinprogress++
 988	for {
 989		select {
 990		case track := <-trackchan:
 991			tracks[track.xid] = append(tracks[track.xid], track.who)
 992		case <-sleeper.C:
 993			if len(tracks) > 0 {
 994				go savetracks(tracks)
 995				tracks = make(map[string][]string)
 996			}
 997			sleeper.Reset(timeout)
 998		case c := <-dumptracks:
 999			if len(tracks) > 0 {
1000				savetracks(tracks)
1001			}
1002			c <- true
1003		case <-endoftheworld:
1004			if len(tracks) > 0 {
1005				savetracks(tracks)
1006			}
1007			readyalready <- true
1008			return
1009		}
1010	}
1011}
1012
1013var re_keyholder = regexp.MustCompile(`keyId="([^"]+)"`)
1014
1015func trackback(xid string, r *http.Request) {
1016	agent := r.UserAgent()
1017	who := originate(agent)
1018	sig := r.Header.Get("Signature")
1019	if sig != "" {
1020		m := re_keyholder.FindStringSubmatch(sig)
1021		if len(m) == 2 {
1022			who = m[1]
1023		}
1024	}
1025	if who != "" {
1026		trackchan <- Track{xid: xid, who: who}
1027	}
1028}
1029
1030func showonehonk(w http.ResponseWriter, r *http.Request) {
1031	name := mux.Vars(r)["name"]
1032	user, err := butwhatabout(name)
1033	if err != nil {
1034		http.NotFound(w, r)
1035		return
1036	}
1037	if stealthmode(user.ID, r) {
1038		http.NotFound(w, r)
1039		return
1040	}
1041	xid := fmt.Sprintf("https://%s%s", serverName, r.URL.Path)
1042
1043	if friendorfoe(r.Header.Get("Accept")) {
1044		j, ok := gimmejonk(xid)
1045		if ok {
1046			trackback(xid, r)
1047			w.Header().Set("Content-Type", theonetruename)
1048			w.Write(j)
1049		} else {
1050			http.NotFound(w, r)
1051		}
1052		return
1053	}
1054	honk := getxonk(user.ID, xid)
1055	if honk == nil {
1056		http.NotFound(w, r)
1057		return
1058	}
1059	u := login.GetUserInfo(r)
1060	if u != nil && u.UserID != user.ID {
1061		u = nil
1062	}
1063	if !honk.Public {
1064		if u == nil {
1065			http.NotFound(w, r)
1066			return
1067
1068		}
1069		templinfo := getInfo(r)
1070		templinfo["ServerMessage"] = "one honk maybe more"
1071		templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
1072		honkpage(w, u, []*Honk{honk}, templinfo)
1073		return
1074	}
1075	rawhonks := gethonksbyconvoy(honk.UserID, honk.Convoy, 0)
1076	reversehonks(rawhonks)
1077	var honks []*Honk
1078	for _, h := range rawhonks {
1079		if h.XID == xid && len(honks) != 0 {
1080			h.Style += " glow"
1081		}
1082		if h.Public && (h.Whofore == 2 || h.IsAcked()) {
1083			honks = append(honks, h)
1084		}
1085	}
1086
1087	templinfo := getInfo(r)
1088	templinfo["ServerMessage"] = "one honk maybe more"
1089	templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
1090	honkpage(w, u, honks, templinfo)
1091}
1092
1093func honkpage(w http.ResponseWriter, u *login.UserInfo, honks []*Honk, templinfo map[string]interface{}) {
1094	var userid int64 = -1
1095	if u != nil {
1096		userid = u.UserID
1097		templinfo["User"], _ = butwhatabout(u.Username)
1098	}
1099	reverbolate(userid, honks)
1100	templinfo["Honks"] = honks
1101	templinfo["MapLink"] = getmaplink(u)
1102	if templinfo["TopHID"] == nil {
1103		if len(honks) > 0 {
1104			templinfo["TopHID"] = honks[0].ID
1105		} else {
1106			templinfo["TopHID"] = 0
1107		}
1108	}
1109	if u == nil && !debugMode {
1110		w.Header().Set("Cache-Control", "max-age=60")
1111	}
1112	err := readviews.Execute(w, "honkpage.html", templinfo)
1113	if err != nil {
1114		log.Print(err)
1115	}
1116}
1117
1118func saveuser(w http.ResponseWriter, r *http.Request) {
1119	whatabout := r.FormValue("whatabout")
1120	whatabout = strings.Replace(whatabout, "\r", "", -1)
1121	u := login.GetUserInfo(r)
1122	user, _ := butwhatabout(u.Username)
1123	db := opendatabase()
1124
1125	options := user.Options
1126	if r.FormValue("skinny") == "skinny" {
1127		options.SkinnyCSS = true
1128	} else {
1129		options.SkinnyCSS = false
1130	}
1131	if r.FormValue("omitimages") == "omitimages" {
1132		options.OmitImages = true
1133	} else {
1134		options.OmitImages = false
1135	}
1136	if r.FormValue("mentionall") == "mentionall" {
1137		options.MentionAll = true
1138	} else {
1139		options.MentionAll = false
1140	}
1141	if r.FormValue("maps") == "apple" {
1142		options.MapLink = "apple"
1143	} else {
1144		options.MapLink = ""
1145	}
1146	options.Reaction = r.FormValue("reaction")
1147
1148	sendupdate := false
1149	ava := re_avatar.FindString(whatabout)
1150	if ava != "" {
1151		whatabout = re_avatar.ReplaceAllString(whatabout, "")
1152		ava = ava[7:]
1153		if ava[0] == ' ' {
1154			ava = ava[1:]
1155		}
1156		ava = fmt.Sprintf("https://%s/meme/%s", serverName, ava)
1157	}
1158	if ava != options.Avatar {
1159		options.Avatar = ava
1160		sendupdate = true
1161	}
1162	whatabout = strings.TrimSpace(whatabout)
1163	if whatabout != user.About {
1164		sendupdate = true
1165	}
1166	j, err := jsonify(options)
1167	if err == nil {
1168		_, err = db.Exec("update users set about = ?, options = ? where username = ?", whatabout, j, u.Username)
1169	}
1170	if err != nil {
1171		log.Printf("error bouting what: %s", err)
1172	}
1173	somenamedusers.Clear(u.Username)
1174	somenumberedusers.Clear(u.UserID)
1175	oldjonkers.Clear(u.Username)
1176
1177	if sendupdate {
1178		updateMe(u.Username)
1179	}
1180
1181	http.Redirect(w, r, "/account", http.StatusSeeOther)
1182}
1183
1184func bonkit(xid string, user *WhatAbout) {
1185	log.Printf("bonking %s", xid)
1186
1187	xonk := getxonk(user.ID, xid)
1188	if xonk == nil {
1189		return
1190	}
1191	if !xonk.Public {
1192		return
1193	}
1194	if xonk.IsBonked() {
1195		return
1196	}
1197	donksforhonks([]*Honk{xonk})
1198
1199	_, err := stmtUpdateFlags.Exec(flagIsBonked, xonk.ID)
1200	if err != nil {
1201		log.Printf("error acking bonk: %s", err)
1202	}
1203
1204	oonker := xonk.Oonker
1205	if oonker == "" {
1206		oonker = xonk.Honker
1207	}
1208	dt := time.Now().UTC()
1209	bonk := &Honk{
1210		UserID:   user.ID,
1211		Username: user.Name,
1212		What:     "bonk",
1213		Honker:   user.URL,
1214		Oonker:   oonker,
1215		XID:      xonk.XID,
1216		RID:      xonk.RID,
1217		Noise:    xonk.Noise,
1218		Precis:   xonk.Precis,
1219		URL:      xonk.URL,
1220		Date:     dt,
1221		Donks:    xonk.Donks,
1222		Whofore:  2,
1223		Convoy:   xonk.Convoy,
1224		Audience: []string{thewholeworld, oonker},
1225		Public:   true,
1226		Format:   "html",
1227		Place:    xonk.Place,
1228		Onts:     xonk.Onts,
1229		Time:     xonk.Time,
1230	}
1231
1232	err = savehonk(bonk)
1233	if err != nil {
1234		log.Printf("uh oh")
1235		return
1236	}
1237
1238	go honkworldwide(user, bonk)
1239}
1240
1241func submitbonk(w http.ResponseWriter, r *http.Request) {
1242	xid := r.FormValue("xid")
1243	userinfo := login.GetUserInfo(r)
1244	user, _ := butwhatabout(userinfo.Username)
1245
1246	bonkit(xid, user)
1247
1248	if r.FormValue("js") != "1" {
1249		templinfo := getInfo(r)
1250		templinfo["ServerMessage"] = "Bonked!"
1251		err := readviews.Execute(w, "msg.html", templinfo)
1252		if err != nil {
1253			log.Print(err)
1254		}
1255	}
1256}
1257
1258func sendzonkofsorts(xonk *Honk, user *WhatAbout, what string, aux string) {
1259	zonk := &Honk{
1260		What:     what,
1261		XID:      xonk.XID,
1262		Date:     time.Now().UTC(),
1263		Audience: oneofakind(xonk.Audience),
1264		Noise:    aux,
1265	}
1266	zonk.Public = loudandproud(zonk.Audience)
1267
1268	log.Printf("announcing %sed honk: %s", what, xonk.XID)
1269	go honkworldwide(user, zonk)
1270}
1271
1272func zonkit(w http.ResponseWriter, r *http.Request) {
1273	wherefore := r.FormValue("wherefore")
1274	what := r.FormValue("what")
1275	userinfo := login.GetUserInfo(r)
1276	user, _ := butwhatabout(userinfo.Username)
1277
1278	if wherefore == "save" {
1279		xonk := getxonk(userinfo.UserID, what)
1280		if xonk != nil {
1281			_, err := stmtUpdateFlags.Exec(flagIsSaved, xonk.ID)
1282			if err != nil {
1283				log.Printf("error saving: %s", err)
1284			}
1285		}
1286		return
1287	}
1288
1289	if wherefore == "unsave" {
1290		xonk := getxonk(userinfo.UserID, what)
1291		if xonk != nil {
1292			_, err := stmtClearFlags.Exec(flagIsSaved, xonk.ID)
1293			if err != nil {
1294				log.Printf("error unsaving: %s", err)
1295			}
1296		}
1297		return
1298	}
1299
1300	if wherefore == "react" {
1301		reaction := user.Options.Reaction
1302		if r2 := r.FormValue("reaction"); r2 != "" {
1303			reaction = r2
1304		}
1305		if reaction == "none" {
1306			return
1307		}
1308		xonk := getxonk(userinfo.UserID, what)
1309		if xonk != nil {
1310			_, err := stmtUpdateFlags.Exec(flagIsReacted, xonk.ID)
1311			if err != nil {
1312				log.Printf("error saving: %s", err)
1313			}
1314			sendzonkofsorts(xonk, user, "react", reaction)
1315		}
1316		return
1317	}
1318
1319	// my hammer is too big, oh well
1320	defer oldjonks.Flush()
1321
1322	if wherefore == "ack" {
1323		xonk := getxonk(userinfo.UserID, what)
1324		if xonk != nil && !xonk.IsAcked() {
1325			_, err := stmtUpdateFlags.Exec(flagIsAcked, xonk.ID)
1326			if err != nil {
1327				log.Printf("error acking: %s", err)
1328			}
1329			sendzonkofsorts(xonk, user, "ack", "")
1330		}
1331		return
1332	}
1333
1334	if wherefore == "deack" {
1335		xonk := getxonk(userinfo.UserID, what)
1336		if xonk != nil && xonk.IsAcked() {
1337			_, err := stmtClearFlags.Exec(flagIsAcked, xonk.ID)
1338			if err != nil {
1339				log.Printf("error deacking: %s", err)
1340			}
1341			sendzonkofsorts(xonk, user, "deack", "")
1342		}
1343		return
1344	}
1345
1346	if wherefore == "bonk" {
1347		user, _ := butwhatabout(userinfo.Username)
1348		bonkit(what, user)
1349		return
1350	}
1351
1352	if wherefore == "unbonk" {
1353		xonk := getbonk(userinfo.UserID, what)
1354		if xonk != nil {
1355			deletehonk(xonk.ID)
1356			xonk = getxonk(userinfo.UserID, what)
1357			_, err := stmtClearFlags.Exec(flagIsBonked, xonk.ID)
1358			if err != nil {
1359				log.Printf("error unbonking: %s", err)
1360			}
1361			sendzonkofsorts(xonk, user, "unbonk", "")
1362		}
1363		return
1364	}
1365
1366	if wherefore == "untag" {
1367		xonk := getxonk(userinfo.UserID, what)
1368		if xonk != nil {
1369			_, err := stmtUpdateFlags.Exec(flagIsUntagged, xonk.ID)
1370			if err != nil {
1371				log.Printf("error untagging: %s", err)
1372			}
1373		}
1374		var badparents map[string]bool
1375		untagged.GetAndLock(userinfo.UserID, &badparents)
1376		badparents[what] = true
1377		untagged.Unlock()
1378		return
1379	}
1380
1381	log.Printf("zonking %s %s", wherefore, what)
1382	if wherefore == "zonk" {
1383		xonk := getxonk(userinfo.UserID, what)
1384		if xonk != nil {
1385			deletehonk(xonk.ID)
1386			if xonk.Whofore == 2 || xonk.Whofore == 3 {
1387				sendzonkofsorts(xonk, user, "zonk", "")
1388			}
1389		}
1390	}
1391	_, err := stmtSaveZonker.Exec(userinfo.UserID, what, wherefore)
1392	if err != nil {
1393		log.Printf("error saving zonker: %s", err)
1394		return
1395	}
1396}
1397
1398func edithonkpage(w http.ResponseWriter, r *http.Request) {
1399	u := login.GetUserInfo(r)
1400	user, _ := butwhatabout(u.Username)
1401	xid := r.FormValue("xid")
1402	honk := getxonk(u.UserID, xid)
1403	if !canedithonk(user, honk) {
1404		http.Error(w, "no editing that please", http.StatusInternalServerError)
1405		return
1406	}
1407
1408	noise := honk.Noise
1409
1410	honks := []*Honk{honk}
1411	donksforhonks(honks)
1412	reverbolate(u.UserID, honks)
1413	templinfo := getInfo(r)
1414	templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
1415	templinfo["Honks"] = honks
1416	templinfo["MapLink"] = getmaplink(u)
1417	templinfo["Noise"] = noise
1418	templinfo["SavedPlace"] = honk.Place
1419	if tm := honk.Time; tm != nil {
1420		templinfo["ShowTime"] = ";"
1421		templinfo["StartTime"] = tm.StartTime.Format("2006-01-02 03:04")
1422		templinfo["Duration"] = tm.Duration
1423	}
1424	templinfo["ServerMessage"] = "honk edit 2"
1425	templinfo["IsPreview"] = true
1426	templinfo["UpdateXID"] = honk.XID
1427	if len(honk.Donks) > 0 {
1428		templinfo["SavedFile"] = honk.Donks[0].XID
1429	}
1430	err := readviews.Execute(w, "honkpage.html", templinfo)
1431	if err != nil {
1432		log.Print(err)
1433	}
1434}
1435
1436func newhonkpage(w http.ResponseWriter, r *http.Request) {
1437	u := login.GetUserInfo(r)
1438	rid := r.FormValue("rid")
1439	noise := ""
1440
1441	xonk := getxonk(u.UserID, rid)
1442	if xonk != nil {
1443		_, replto := handles(xonk.Honker)
1444		if replto != "" {
1445			noise = "@" + replto + " "
1446		}
1447	}
1448
1449	templinfo := getInfo(r)
1450	templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
1451	templinfo["InReplyTo"] = rid
1452	templinfo["Noise"] = noise
1453	templinfo["ServerMessage"] = "compose honk"
1454	templinfo["IsPreview"] = true
1455	err := readviews.Execute(w, "honkpage.html", templinfo)
1456	if err != nil {
1457		log.Print(err)
1458	}
1459}
1460
1461func canedithonk(user *WhatAbout, honk *Honk) bool {
1462	if honk == nil || honk.Honker != user.URL || honk.What == "bonk" {
1463		return false
1464	}
1465	return true
1466}
1467
1468func submitdonk(w http.ResponseWriter, r *http.Request) (*Donk, error) {
1469	file, filehdr, err := r.FormFile("donk")
1470	if err != nil {
1471		if err != http.ErrMissingFile {
1472			log.Printf("error reading donk: %s", err)
1473			http.Error(w, "error reading donk", http.StatusUnsupportedMediaType)
1474		}
1475		return nil, err
1476	}
1477	var buf bytes.Buffer
1478	io.Copy(&buf, file)
1479	file.Close()
1480	data := buf.Bytes()
1481	xid := xfiltrate()
1482	var media, name string
1483	img, err := shrinkit(data)
1484	if err == nil {
1485		data = img.Data
1486		format := img.Format
1487		media = "image/" + format
1488		if format == "jpeg" {
1489			format = "jpg"
1490		}
1491		name = xid + "." + format
1492		xid = name
1493	} else {
1494		ct := http.DetectContentType(data)
1495		switch ct {
1496		case "application/pdf":
1497			maxsize := 10000000
1498			if len(data) > maxsize {
1499				log.Printf("bad image: %s too much pdf: %d", err, len(data))
1500				http.Error(w, "didn't like your attachment", http.StatusUnsupportedMediaType)
1501				return nil, err
1502			}
1503			media = ct
1504			xid += ".pdf"
1505			name = filehdr.Filename
1506			if name == "" {
1507				name = xid
1508			}
1509		default:
1510			maxsize := 100000
1511			if len(data) > maxsize {
1512				log.Printf("bad image: %s too much text: %d", err, len(data))
1513				http.Error(w, "didn't like your attachment", http.StatusUnsupportedMediaType)
1514				return nil, err
1515			}
1516			for i := 0; i < len(data); i++ {
1517				if data[i] < 32 && data[i] != '\t' && data[i] != '\r' && data[i] != '\n' {
1518					log.Printf("bad image: %s not text: %d", err, data[i])
1519					http.Error(w, "didn't like your attachment", http.StatusUnsupportedMediaType)
1520					return nil, err
1521				}
1522			}
1523			media = "text/plain"
1524			xid += ".txt"
1525			name = filehdr.Filename
1526			if name == "" {
1527				name = xid
1528			}
1529		}
1530	}
1531	desc := strings.TrimSpace(r.FormValue("donkdesc"))
1532	if desc == "" {
1533		desc = name
1534	}
1535	url := fmt.Sprintf("https://%s/d/%s", serverName, xid)
1536	fileid, err := savefile(xid, name, desc, url, media, true, data)
1537	if err != nil {
1538		log.Printf("unable to save image: %s", err)
1539		http.Error(w, "failed to save attachment", http.StatusUnsupportedMediaType)
1540		return nil, err
1541	}
1542	d := &Donk{
1543		FileID: fileid,
1544		XID:    xid,
1545		Desc:   desc,
1546		URL:    url,
1547		Local:  true,
1548	}
1549	return d, nil
1550}
1551
1552func submitwebhonk(w http.ResponseWriter, r *http.Request) {
1553	h := submithonk(w, r)
1554	if h == nil {
1555		return
1556	}
1557	http.Redirect(w, r, h.XID[len(serverName)+8:], http.StatusSeeOther)
1558}
1559
1560// what a hot mess this function is
1561func submithonk(w http.ResponseWriter, r *http.Request) *Honk {
1562	rid := r.FormValue("rid")
1563	noise := r.FormValue("noise")
1564	format := r.FormValue("format")
1565	if format == "" {
1566		format = "markdown"
1567	}
1568	if !(format == "markdown" || format == "html") {
1569		http.Error(w, "unknown format", 500)
1570		return nil
1571	}
1572
1573	userinfo := login.GetUserInfo(r)
1574	user, _ := butwhatabout(userinfo.Username)
1575
1576	dt := time.Now().UTC()
1577	updatexid := r.FormValue("updatexid")
1578	var honk *Honk
1579	if updatexid != "" {
1580		honk = getxonk(userinfo.UserID, updatexid)
1581		if !canedithonk(user, honk) {
1582			http.Error(w, "no editing that please", http.StatusInternalServerError)
1583			return nil
1584		}
1585		honk.Date = dt
1586		honk.What = "update"
1587		honk.Format = format
1588	} else {
1589		xid := fmt.Sprintf("%s/%s/%s", user.URL, honkSep, xfiltrate())
1590		what := "honk"
1591		if rid != "" {
1592			what = "tonk"
1593		}
1594		honk = &Honk{
1595			UserID:   userinfo.UserID,
1596			Username: userinfo.Username,
1597			What:     what,
1598			Honker:   user.URL,
1599			XID:      xid,
1600			Date:     dt,
1601			Format:   format,
1602		}
1603	}
1604
1605	noise = strings.Replace(noise, "\r", "", -1)
1606	noise = quickrename(noise, userinfo.UserID)
1607	noise = hooterize(noise)
1608	honk.Noise = noise
1609	translate(honk)
1610
1611	var convoy string
1612	if rid != "" {
1613		xonk := getxonk(userinfo.UserID, rid)
1614		if xonk == nil {
1615			http.Error(w, "replyto disappeared", http.StatusNotFound)
1616			return nil
1617		}
1618		if xonk.Public {
1619			honk.Audience = append(honk.Audience, xonk.Audience...)
1620		}
1621		convoy = xonk.Convoy
1622		for i, a := range honk.Audience {
1623			if a == thewholeworld {
1624				honk.Audience[0], honk.Audience[i] = honk.Audience[i], honk.Audience[0]
1625				break
1626			}
1627		}
1628		honk.RID = rid
1629		if xonk.Precis != "" && honk.Precis == "" {
1630			honk.Precis = xonk.Precis
1631			if !(strings.HasPrefix(honk.Precis, "DZ:") || strings.HasPrefix(honk.Precis, "re: re: re: ")) {
1632				honk.Precis = "re: " + honk.Precis
1633			}
1634		}
1635	} else {
1636		honk.Audience = []string{thewholeworld}
1637	}
1638	if honk.Noise != "" && honk.Noise[0] == '@' {
1639		honk.Audience = append(grapevine(honk.Mentions), honk.Audience...)
1640	} else {
1641		honk.Audience = append(honk.Audience, grapevine(honk.Mentions)...)
1642	}
1643
1644	if convoy == "" {
1645		convoy = "data:,electrichonkytonk-" + xfiltrate()
1646	}
1647	butnottooloud(honk.Audience)
1648	honk.Audience = oneofakind(honk.Audience)
1649	if len(honk.Audience) == 0 {
1650		log.Printf("honk to nowhere")
1651		http.Error(w, "honk to nowhere...", http.StatusNotFound)
1652		return nil
1653	}
1654	honk.Public = loudandproud(honk.Audience)
1655	honk.Convoy = convoy
1656
1657	donkxid := r.FormValue("donkxid")
1658	if donkxid == "" {
1659		d, err := submitdonk(w, r)
1660		if err != nil && err != http.ErrMissingFile {
1661			return nil
1662		}
1663		if d != nil {
1664			honk.Donks = append(honk.Donks, d)
1665			donkxid = d.XID
1666		}
1667	} else {
1668		xid := donkxid
1669		url := fmt.Sprintf("https://%s/d/%s", serverName, xid)
1670		donk := finddonk(url)
1671		if donk != nil {
1672			honk.Donks = append(honk.Donks, donk)
1673		} else {
1674			log.Printf("can't find file: %s", xid)
1675		}
1676	}
1677	memetize(honk)
1678	imaginate(honk)
1679
1680	placename := strings.TrimSpace(r.FormValue("placename"))
1681	placelat := strings.TrimSpace(r.FormValue("placelat"))
1682	placelong := strings.TrimSpace(r.FormValue("placelong"))
1683	placeurl := strings.TrimSpace(r.FormValue("placeurl"))
1684	if placename != "" || placelat != "" || placelong != "" || placeurl != "" {
1685		p := new(Place)
1686		p.Name = placename
1687		p.Latitude, _ = strconv.ParseFloat(placelat, 64)
1688		p.Longitude, _ = strconv.ParseFloat(placelong, 64)
1689		p.Url = placeurl
1690		honk.Place = p
1691	}
1692	timestart := strings.TrimSpace(r.FormValue("timestart"))
1693	if timestart != "" {
1694		t := new(Time)
1695		now := time.Now().Local()
1696		for _, layout := range []string{"2006-01-02 3:04pm", "2006-01-02 15:04", "3:04pm", "15:04"} {
1697			start, err := time.ParseInLocation(layout, timestart, now.Location())
1698			if err == nil {
1699				if start.Year() == 0 {
1700					start = time.Date(now.Year(), now.Month(), now.Day(), start.Hour(), start.Minute(), 0, 0, now.Location())
1701				}
1702				t.StartTime = start
1703				break
1704			}
1705		}
1706		timeend := r.FormValue("timeend")
1707		dur := parseDuration(timeend)
1708		if dur != 0 {
1709			t.Duration = Duration(dur)
1710		}
1711		if !t.StartTime.IsZero() {
1712			honk.What = "event"
1713			honk.Time = t
1714		}
1715	}
1716
1717	if honk.Public {
1718		honk.Whofore = 2
1719	} else {
1720		honk.Whofore = 3
1721	}
1722
1723	// back to markdown
1724	honk.Noise = noise
1725
1726	if r.FormValue("preview") == "preview" {
1727		honks := []*Honk{honk}
1728		reverbolate(userinfo.UserID, honks)
1729		templinfo := getInfo(r)
1730		templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
1731		templinfo["Honks"] = honks
1732		templinfo["MapLink"] = getmaplink(userinfo)
1733		templinfo["InReplyTo"] = r.FormValue("rid")
1734		templinfo["Noise"] = r.FormValue("noise")
1735		templinfo["SavedFile"] = donkxid
1736		if tm := honk.Time; tm != nil {
1737			templinfo["ShowTime"] = ";"
1738			templinfo["StartTime"] = tm.StartTime.Format("2006-01-02 03:04")
1739			templinfo["Duration"] = tm.Duration
1740		}
1741		templinfo["IsPreview"] = true
1742		templinfo["UpdateXID"] = updatexid
1743		templinfo["ServerMessage"] = "honk preview"
1744		err := readviews.Execute(w, "honkpage.html", templinfo)
1745		if err != nil {
1746			log.Print(err)
1747		}
1748		return nil
1749	}
1750
1751	if updatexid != "" {
1752		updatehonk(honk)
1753		oldjonks.Clear(honk.XID)
1754	} else {
1755		err := savehonk(honk)
1756		if err != nil {
1757			log.Printf("uh oh")
1758			return nil
1759		}
1760	}
1761
1762	// reload for consistency
1763	honk.Donks = nil
1764	donksforhonks([]*Honk{honk})
1765
1766	go honkworldwide(user, honk)
1767
1768	return honk
1769}
1770
1771func showhonkers(w http.ResponseWriter, r *http.Request) {
1772	userinfo := login.GetUserInfo(r)
1773	templinfo := getInfo(r)
1774	templinfo["Honkers"] = gethonkers(userinfo.UserID)
1775	templinfo["HonkerCSRF"] = login.GetCSRF("submithonker", r)
1776	err := readviews.Execute(w, "honkers.html", templinfo)
1777	if err != nil {
1778		log.Print(err)
1779	}
1780}
1781
1782func showchatter(w http.ResponseWriter, r *http.Request) {
1783	u := login.GetUserInfo(r)
1784	chatter := loadchatter(u.UserID)
1785	for _, chat := range chatter {
1786		for _, ch := range chat.Chonks {
1787			filterchonk(ch)
1788		}
1789	}
1790
1791	templinfo := getInfo(r)
1792	templinfo["Chatter"] = chatter
1793	templinfo["ChonkCSRF"] = login.GetCSRF("sendchonk", r)
1794	err := readviews.Execute(w, "chatter.html", templinfo)
1795	if err != nil {
1796		log.Print(err)
1797	}
1798}
1799
1800func submitchonk(w http.ResponseWriter, r *http.Request) {
1801	u := login.GetUserInfo(r)
1802	user, _ := butwhatabout(u.Username)
1803	noise := r.FormValue("noise")
1804	target := r.FormValue("target")
1805	format := "markdown"
1806	dt := time.Now().UTC()
1807	xid := fmt.Sprintf("%s/%s/%s", user.URL, "chonk", xfiltrate())
1808
1809	if !strings.HasPrefix(target, "https://") {
1810		target = fullname(target, u.UserID)
1811	}
1812	if target == "" {
1813		http.Error(w, "who is that?", http.StatusInternalServerError)
1814		return
1815	}
1816	ch := Chonk{
1817		UserID: u.UserID,
1818		XID:    xid,
1819		Who:    user.URL,
1820		Target: target,
1821		Date:   dt,
1822		Noise:  noise,
1823		Format: format,
1824	}
1825	d, err := submitdonk(w, r)
1826	if err != nil && err != http.ErrMissingFile {
1827		return
1828	}
1829	if d != nil {
1830		ch.Donks = append(ch.Donks, d)
1831	}
1832
1833	translatechonk(&ch)
1834	savechonk(&ch)
1835	// reload for consistency
1836	ch.Donks = nil
1837	donksforchonks([]*Chonk{&ch})
1838	go sendchonk(user, &ch)
1839
1840	http.Redirect(w, r, "/chatter", http.StatusSeeOther)
1841}
1842
1843var combocache = cache.New(cache.Options{Filler: func(userid int64) ([]string, bool) {
1844	honkers := gethonkers(userid)
1845	var combos []string
1846	for _, h := range honkers {
1847		combos = append(combos, h.Combos...)
1848	}
1849	for i, c := range combos {
1850		if c == "-" {
1851			combos[i] = ""
1852		}
1853	}
1854	combos = oneofakind(combos)
1855	sort.Strings(combos)
1856	return combos, true
1857}, Invalidator: &honkerinvalidator})
1858
1859func showcombos(w http.ResponseWriter, r *http.Request) {
1860	userinfo := login.GetUserInfo(r)
1861	var combos []string
1862	combocache.Get(userinfo.UserID, &combos)
1863	templinfo := getInfo(r)
1864	err := readviews.Execute(w, "combos.html", templinfo)
1865	if err != nil {
1866		log.Print(err)
1867	}
1868}
1869
1870func submithonker(w http.ResponseWriter, r *http.Request) {
1871	u := login.GetUserInfo(r)
1872	name := strings.TrimSpace(r.FormValue("name"))
1873	url := strings.TrimSpace(r.FormValue("url"))
1874	peep := r.FormValue("peep")
1875	combos := strings.TrimSpace(r.FormValue("combos"))
1876	combos = " " + combos + " "
1877	honkerid, _ := strconv.ParseInt(r.FormValue("honkerid"), 10, 0)
1878
1879	var meta HonkerMeta
1880	meta.Notes = strings.TrimSpace(r.FormValue("notes"))
1881	mj, _ := jsonify(&meta)
1882
1883	defer honkerinvalidator.Clear(u.UserID)
1884
1885	if honkerid > 0 {
1886		goodbye := r.FormValue("goodbye")
1887		if goodbye == "F" {
1888			db := opendatabase()
1889			row := db.QueryRow("select xid from honkers where honkerid = ? and userid = ? and flavor in ('sub')",
1890				honkerid, u.UserID)
1891			err := row.Scan(&url)
1892			if err != nil {
1893				log.Printf("can't get honker xid: %s", err)
1894				return
1895			}
1896			log.Printf("unsubscribing from %s", url)
1897			user, _ := butwhatabout(u.Username)
1898			_, err = stmtUpdateFlavor.Exec("unsub", u.UserID, url, name, "sub")
1899			if err != nil {
1900				log.Printf("error updating honker: %s", err)
1901				return
1902			}
1903			go itakeitallback(user, url)
1904
1905			http.Redirect(w, r, "/honkers", http.StatusSeeOther)
1906			return
1907		}
1908		if goodbye == "X" {
1909			var owner string
1910			db := opendatabase()
1911			row := db.QueryRow("select xid, owner from honkers where honkerid = ? and userid = ? and flavor in ('unsub', 'peep', 'presub', 'sub')",
1912				honkerid, u.UserID)
1913			err := row.Scan(&url, &owner)
1914			if err != nil {
1915				log.Printf("can't get honker xid: %s", err)
1916				return
1917			}
1918			log.Printf("resubscribing to %s", url)
1919			user, _ := butwhatabout(u.Username)
1920			_, err = stmtUpdateFlavor.Exec("presub", u.UserID, url, name, "unsub")
1921			if err == nil {
1922				_, err = stmtUpdateFlavor.Exec("presub", u.UserID, url, name, "peep")
1923			}
1924			if err != nil {
1925				log.Printf("error updating honker: %s", err)
1926				return
1927			}
1928			go subsub(user, url, owner)
1929
1930			http.Redirect(w, r, "/honkers", http.StatusSeeOther)
1931			return
1932		}
1933		_, err := stmtUpdateHonker.Exec(name, combos, mj, honkerid, u.UserID)
1934		if err != nil {
1935			log.Printf("update honker err: %s", err)
1936			return
1937		}
1938		http.Redirect(w, r, "/honkers", http.StatusSeeOther)
1939		return
1940	}
1941
1942	if url == "" {
1943		http.Error(w, "subscribing to nothing?", http.StatusInternalServerError)
1944		return
1945	}
1946
1947	flavor := "presub"
1948	if peep == "peep" {
1949		flavor = "peep"
1950	}
1951
1952	if url[0] == '#' {
1953		flavor = "peep"
1954		if name == "" {
1955			name = url
1956		}
1957		_, err := stmtSaveHonker.Exec(u.UserID, name, url, flavor, combos, url, mj)
1958		if err != nil {
1959			log.Print(err)
1960			return
1961		}
1962		http.Redirect(w, r, "/honkers", http.StatusSeeOther)
1963		return
1964	}
1965
1966	info, err := investigate(url)
1967	if err != nil {
1968		http.Error(w, "error investigating: "+err.Error(), http.StatusInternalServerError)
1969		log.Printf("failed to investigate honker: %s", err)
1970		return
1971	}
1972	url = info.XID
1973
1974	var x string
1975	db := opendatabase()
1976	row := db.QueryRow("select xid from honkers where xid = ? and userid = ? and flavor in ('sub', 'unsub', 'peep')", url, u.UserID)
1977	err = row.Scan(&x)
1978	if err != sql.ErrNoRows {
1979		http.Error(w, "it seems you are already subscribed to them", http.StatusInternalServerError)
1980		if err != nil {
1981			log.Printf("honker scan err: %s", err)
1982		}
1983		return
1984	}
1985
1986	if name == "" {
1987		name = info.Name
1988	}
1989	_, err = stmtSaveHonker.Exec(u.UserID, name, url, flavor, combos, info.Owner, mj)
1990	if err != nil {
1991		log.Print(err)
1992		return
1993	}
1994	if flavor == "presub" {
1995		user, _ := butwhatabout(u.Username)
1996		go subsub(user, url, info.Owner)
1997	}
1998	http.Redirect(w, r, "/honkers", http.StatusSeeOther)
1999}
2000
2001func hfcspage(w http.ResponseWriter, r *http.Request) {
2002	userinfo := login.GetUserInfo(r)
2003
2004	filters := getfilters(userinfo.UserID, filtAny)
2005
2006	templinfo := getInfo(r)
2007	templinfo["Filters"] = filters
2008	templinfo["FilterCSRF"] = login.GetCSRF("filter", r)
2009	err := readviews.Execute(w, "hfcs.html", templinfo)
2010	if err != nil {
2011		log.Print(err)
2012	}
2013}
2014
2015func savehfcs(w http.ResponseWriter, r *http.Request) {
2016	userinfo := login.GetUserInfo(r)
2017	itsok := r.FormValue("itsok")
2018	if itsok == "iforgiveyou" {
2019		hfcsid, _ := strconv.ParseInt(r.FormValue("hfcsid"), 10, 0)
2020		_, err := stmtDeleteFilter.Exec(userinfo.UserID, hfcsid)
2021		if err != nil {
2022			log.Printf("error deleting filter: %s", err)
2023		}
2024		filtInvalidator.Clear(userinfo.UserID)
2025		http.Redirect(w, r, "/hfcs", http.StatusSeeOther)
2026		return
2027	}
2028
2029	filt := new(Filter)
2030	filt.Name = strings.TrimSpace(r.FormValue("name"))
2031	filt.Date = time.Now().UTC()
2032	filt.Actor = strings.TrimSpace(r.FormValue("actor"))
2033	filt.IncludeAudience = r.FormValue("incaud") == "yes"
2034	filt.Text = strings.TrimSpace(r.FormValue("filttext"))
2035	filt.IsAnnounce = r.FormValue("isannounce") == "yes"
2036	filt.AnnounceOf = strings.TrimSpace(r.FormValue("announceof"))
2037	filt.Reject = r.FormValue("doreject") == "yes"
2038	filt.SkipMedia = r.FormValue("doskipmedia") == "yes"
2039	filt.Hide = r.FormValue("dohide") == "yes"
2040	filt.Collapse = r.FormValue("docollapse") == "yes"
2041	filt.Rewrite = strings.TrimSpace(r.FormValue("filtrewrite"))
2042	filt.Replace = strings.TrimSpace(r.FormValue("filtreplace"))
2043	if dur := parseDuration(r.FormValue("filtduration")); dur > 0 {
2044		filt.Expiration = time.Now().UTC().Add(dur)
2045	}
2046	filt.Notes = strings.TrimSpace(r.FormValue("filtnotes"))
2047
2048	if filt.Actor == "" && filt.Text == "" && !filt.IsAnnounce {
2049		log.Printf("blank filter")
2050		http.Error(w, "can't save a blank filter", http.StatusInternalServerError)
2051		return
2052	}
2053
2054	j, err := jsonify(filt)
2055	if err == nil {
2056		_, err = stmtSaveFilter.Exec(userinfo.UserID, j)
2057	}
2058	if err != nil {
2059		log.Printf("error saving filter: %s", err)
2060	}
2061
2062	filtInvalidator.Clear(userinfo.UserID)
2063	http.Redirect(w, r, "/hfcs", http.StatusSeeOther)
2064}
2065
2066func accountpage(w http.ResponseWriter, r *http.Request) {
2067	u := login.GetUserInfo(r)
2068	user, _ := butwhatabout(u.Username)
2069	templinfo := getInfo(r)
2070	templinfo["UserCSRF"] = login.GetCSRF("saveuser", r)
2071	templinfo["LogoutCSRF"] = login.GetCSRF("logout", r)
2072	templinfo["User"] = user
2073	about := user.About
2074	if ava := user.Options.Avatar; ava != "" {
2075		about += "\n\navatar: " + ava[strings.LastIndexByte(ava, '/')+1:]
2076	}
2077	templinfo["WhatAbout"] = about
2078	err := readviews.Execute(w, "account.html", templinfo)
2079	if err != nil {
2080		log.Print(err)
2081	}
2082}
2083
2084func dochpass(w http.ResponseWriter, r *http.Request) {
2085	err := login.ChangePassword(w, r)
2086	if err != nil {
2087		log.Printf("error changing password: %s", err)
2088	}
2089	http.Redirect(w, r, "/account", http.StatusSeeOther)
2090}
2091
2092func fingerlicker(w http.ResponseWriter, r *http.Request) {
2093	orig := r.FormValue("resource")
2094
2095	log.Printf("finger lick: %s", orig)
2096
2097	if strings.HasPrefix(orig, "acct:") {
2098		orig = orig[5:]
2099	}
2100
2101	name := orig
2102	idx := strings.LastIndexByte(name, '/')
2103	if idx != -1 {
2104		name = name[idx+1:]
2105		if fmt.Sprintf("https://%s/%s/%s", serverName, userSep, name) != orig {
2106			log.Printf("foreign request rejected")
2107			name = ""
2108		}
2109	} else {
2110		idx = strings.IndexByte(name, '@')
2111		if idx != -1 {
2112			name = name[:idx]
2113			if !(name+"@"+serverName == orig || name+"@"+masqName == orig) {
2114				log.Printf("foreign request rejected")
2115				name = ""
2116			}
2117		}
2118	}
2119	user, err := butwhatabout(name)
2120	if err != nil {
2121		http.NotFound(w, r)
2122		return
2123	}
2124	if stealthmode(user.ID, r) {
2125		http.NotFound(w, r)
2126		return
2127	}
2128
2129	j := junk.New()
2130	j["subject"] = fmt.Sprintf("acct:%s@%s", user.Name, masqName)
2131	j["aliases"] = []string{user.URL}
2132	l := junk.New()
2133	l["rel"] = "self"
2134	l["type"] = `application/activity+json`
2135	l["href"] = user.URL
2136	j["links"] = []junk.Junk{l}
2137
2138	w.Header().Set("Content-Type", "application/jrd+json")
2139	j.Write(w)
2140}
2141
2142func somedays() string {
2143	secs := 432000 + notrand.Int63n(432000)
2144	return fmt.Sprintf("%d", secs)
2145}
2146
2147func avatate(w http.ResponseWriter, r *http.Request) {
2148	if debugMode {
2149		loadAvatarColors()
2150	}
2151	n := r.FormValue("a")
2152	a := genAvatar(n)
2153	w.Header().Set("Cache-Control", "max-age="+somedays())
2154	w.Write(a)
2155}
2156
2157func serveasset(w http.ResponseWriter, r *http.Request) {
2158	if !debugMode {
2159		w.Header().Set("Cache-Control", "max-age=7776000")
2160	}
2161	dir := viewDir
2162	if r.URL.Path == "/local.css" {
2163		dir = dataDir
2164	}
2165	http.ServeFile(w, r, dir+"/views"+r.URL.Path)
2166}
2167func servehelp(w http.ResponseWriter, r *http.Request) {
2168	name := mux.Vars(r)["name"]
2169	if !debugMode {
2170		w.Header().Set("Cache-Control", "max-age=3600")
2171	}
2172	http.ServeFile(w, r, viewDir+"/docs/"+name)
2173}
2174func servehtml(w http.ResponseWriter, r *http.Request) {
2175	u := login.GetUserInfo(r)
2176	templinfo := getInfo(r)
2177	templinfo["AboutMsg"] = aboutMsg
2178	templinfo["LoginMsg"] = loginMsg
2179	templinfo["HonkVersion"] = softwareVersion
2180	if r.URL.Path == "/about" {
2181		templinfo["Sensors"] = getSensors()
2182	}
2183	if u == nil && !debugMode {
2184		w.Header().Set("Cache-Control", "max-age=60")
2185	}
2186	err := readviews.Execute(w, r.URL.Path[1:]+".html", templinfo)
2187	if err != nil {
2188		log.Print(err)
2189	}
2190}
2191func serveemu(w http.ResponseWriter, r *http.Request) {
2192	emu := mux.Vars(r)["emu"]
2193
2194	w.Header().Set("Cache-Control", "max-age="+somedays())
2195	http.ServeFile(w, r, dataDir+"/emus/"+emu)
2196}
2197func servememe(w http.ResponseWriter, r *http.Request) {
2198	meme := mux.Vars(r)["meme"]
2199
2200	w.Header().Set("Cache-Control", "max-age="+somedays())
2201	http.ServeFile(w, r, dataDir+"/memes/"+meme)
2202}
2203
2204func servefile(w http.ResponseWriter, r *http.Request) {
2205	xid := mux.Vars(r)["xid"]
2206	var media string
2207	var data []byte
2208	row := stmtGetFileData.QueryRow(xid)
2209	err := row.Scan(&media, &data)
2210	if err != nil {
2211		log.Printf("error loading file: %s", err)
2212		http.NotFound(w, r)
2213		return
2214	}
2215	w.Header().Set("Content-Type", media)
2216	w.Header().Set("X-Content-Type-Options", "nosniff")
2217	w.Header().Set("Cache-Control", "max-age="+somedays())
2218	w.Write(data)
2219}
2220
2221func nomoroboto(w http.ResponseWriter, r *http.Request) {
2222	io.WriteString(w, "User-agent: *\n")
2223	io.WriteString(w, "Disallow: /a\n")
2224	io.WriteString(w, "Disallow: /d/\n")
2225	io.WriteString(w, "Disallow: /meme/\n")
2226	io.WriteString(w, "Disallow: /o\n")
2227	io.WriteString(w, "Disallow: /o/\n")
2228	for _, u := range allusers() {
2229		fmt.Fprintf(w, "Disallow: /%s/%s/%s/\n", userSep, u.Username, honkSep)
2230	}
2231}
2232
2233func webhydra(w http.ResponseWriter, r *http.Request) {
2234	u := login.GetUserInfo(r)
2235	userid := u.UserID
2236	templinfo := getInfo(r)
2237	templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
2238	page := r.FormValue("page")
2239
2240	wanted, _ := strconv.ParseInt(r.FormValue("tophid"), 10, 0)
2241
2242	var honks []*Honk
2243	switch page {
2244	case "atme":
2245		honks = gethonksforme(userid, wanted)
2246		honks = osmosis(honks, userid, false)
2247		templinfo["ServerMessage"] = "at me!"
2248	case "longago":
2249		honks = gethonksfromlongago(userid, wanted)
2250		honks = osmosis(honks, userid, false)
2251		templinfo["ServerMessage"] = "from long ago"
2252	case "home":
2253		honks = gethonksforuser(userid, wanted)
2254		honks = osmosis(honks, userid, true)
2255		templinfo["ServerMessage"] = serverMsg
2256	case "first":
2257		honks = gethonksforuserfirstclass(userid, wanted)
2258		honks = osmosis(honks, userid, true)
2259		templinfo["ServerMessage"] = "first class only"
2260	case "saved":
2261		honks = getsavedhonks(userid, wanted)
2262		templinfo["PageName"] = "saved"
2263		templinfo["ServerMessage"] = "saved honks"
2264	case "combo":
2265		c := r.FormValue("c")
2266		honks = gethonksbycombo(userid, c, wanted)
2267		honks = osmosis(honks, userid, false)
2268		templinfo["ServerMessage"] = "honks by combo: " + c
2269	case "convoy":
2270		c := r.FormValue("c")
2271		honks = gethonksbyconvoy(userid, c, wanted)
2272		honks = osmosis(honks, userid, false)
2273		templinfo["ServerMessage"] = "honks in convoy: " + c
2274	case "honker":
2275		xid := r.FormValue("xid")
2276		honks = gethonksbyxonker(userid, xid, wanted)
2277		msg := templates.Sprintf(`honks by honker: <a href="%s" ref="noreferrer">%s</a>`, xid, xid)
2278		templinfo["ServerMessage"] = msg
2279	default:
2280		http.NotFound(w, r)
2281	}
2282	if len(honks) > 0 {
2283		templinfo["TopHID"] = honks[0].ID
2284	} else {
2285		templinfo["TopHID"] = wanted
2286	}
2287	reverbolate(userid, honks)
2288	templinfo["Honks"] = honks
2289	templinfo["MapLink"] = getmaplink(u)
2290	templinfo["User"], _ = butwhatabout(u.Username)
2291	w.Header().Set("Content-Type", "text/html; charset=utf-8")
2292	err := readviews.Execute(w, "honkfrags.html", templinfo)
2293	if err != nil {
2294		log.Printf("frag error: %s", err)
2295	}
2296}
2297
2298var honkline = make(chan bool)
2299
2300func honkhonkline() {
2301	for {
2302		select {
2303		case honkline <- true:
2304		default:
2305			return
2306		}
2307	}
2308}
2309
2310func apihandler(w http.ResponseWriter, r *http.Request) {
2311	u := login.GetUserInfo(r)
2312	userid := u.UserID
2313	user, _ := butwhatabout(u.Username)
2314	action := r.FormValue("action")
2315	wait, _ := strconv.ParseInt(r.FormValue("wait"), 10, 0)
2316	log.Printf("api request '%s' on behalf of %s", action, u.Username)
2317	switch action {
2318	case "honk":
2319		h := submithonk(w, r)
2320		if h == nil {
2321			return
2322		}
2323		w.Write([]byte(h.XID))
2324	case "donk":
2325		d, err := submitdonk(w, r)
2326		if err != nil {
2327			if err == http.ErrMissingFile {
2328				http.Error(w, "missing donk", http.StatusBadRequest)
2329			}
2330			return
2331		}
2332		w.Write([]byte(d.XID))
2333	case "zonkit":
2334		zonkit(w, r)
2335	case "gethonks":
2336		var honks []*Honk
2337		wanted, _ := strconv.ParseInt(r.FormValue("after"), 10, 0)
2338		page := r.FormValue("page")
2339		var waitchan <-chan time.Time
2340	requery:
2341		switch page {
2342		case "atme":
2343			honks = gethonksforme(userid, wanted)
2344			honks = osmosis(honks, userid, false)
2345		case "longago":
2346			honks = gethonksfromlongago(userid, wanted)
2347			honks = osmosis(honks, userid, false)
2348		case "home":
2349			honks = gethonksforuser(userid, wanted)
2350			honks = osmosis(honks, userid, true)
2351		default:
2352			http.Error(w, "unknown page", http.StatusNotFound)
2353			return
2354		}
2355		if len(honks) == 0 && wait > 0 {
2356			if waitchan == nil {
2357				waitchan = time.After(time.Duration(wait) * time.Second)
2358			}
2359			select {
2360			case <-honkline:
2361				goto requery
2362			case <-waitchan:
2363			}
2364		}
2365		reverbolate(userid, honks)
2366		j := junk.New()
2367		j["honks"] = honks
2368		j.Write(w)
2369	case "sendactivity":
2370		public := r.FormValue("public") == "1"
2371		rcpts := boxuprcpts(user, r.Form["rcpt"], public)
2372		msg := []byte(r.FormValue("msg"))
2373		for rcpt := range rcpts {
2374			go deliverate(0, userid, rcpt, msg)
2375		}
2376	default:
2377		http.Error(w, "unknown action", http.StatusNotFound)
2378		return
2379	}
2380}
2381
2382var endoftheworld = make(chan bool)
2383var readyalready = make(chan bool)
2384var workinprogress = 0
2385
2386func enditall() {
2387	sig := make(chan os.Signal)
2388	signal.Notify(sig, os.Interrupt)
2389	signal.Notify(sig, syscall.SIGTERM)
2390	<-sig
2391	log.Printf("stopping...")
2392	for i := 0; i < workinprogress; i++ {
2393		endoftheworld <- true
2394	}
2395	log.Printf("waiting...")
2396	for i := 0; i < workinprogress; i++ {
2397		<-readyalready
2398	}
2399	log.Printf("apocalypse")
2400	os.Exit(0)
2401}
2402
2403var preservehooks []func()
2404
2405func wait100ms() chan struct{} {
2406	c := make(chan struct{})
2407	go func() {
2408		time.Sleep(100 * time.Millisecond)
2409		close(c)
2410	}()
2411	return c
2412}
2413
2414func bgmonitor() {
2415	for {
2416		time.Sleep(50 * time.Minute)
2417	}
2418}
2419
2420func serve() {
2421	db := opendatabase()
2422	login.Init(db)
2423
2424	listener, err := openListener()
2425	if err != nil {
2426		log.Fatal(err)
2427	}
2428	go runBackendServer()
2429	go enditall()
2430	go redeliverator()
2431	go tracker()
2432	go bgmonitor()
2433	w100 := wait100ms()
2434
2435	readviews = templates.Load(debugMode,
2436		viewDir+"/views/honkpage.html",
2437		viewDir+"/views/honkfrags.html",
2438		viewDir+"/views/honkers.html",
2439		viewDir+"/views/chatter.html",
2440		viewDir+"/views/hfcs.html",
2441		viewDir+"/views/combos.html",
2442		viewDir+"/views/honkform.html",
2443		viewDir+"/views/honk.html",
2444		viewDir+"/views/account.html",
2445		viewDir+"/views/about.html",
2446		viewDir+"/views/funzone.html",
2447		viewDir+"/views/login.html",
2448		viewDir+"/views/xzone.html",
2449		viewDir+"/views/msg.html",
2450		viewDir+"/views/header.html",
2451		viewDir+"/views/onts.html",
2452		viewDir+"/views/honkpage.js",
2453	)
2454	if !debugMode {
2455		assets := []string{viewDir + "/views/style.css", dataDir + "/views/local.css", viewDir + "/views/honkpage.js"}
2456		for _, s := range assets {
2457			savedassetparams[s] = getassetparam(s)
2458		}
2459		loadAvatarColors()
2460	}
2461	<-w100
2462
2463	for _, h := range preservehooks {
2464		h()
2465	}
2466
2467	mux := mux.NewRouter()
2468	mux.Use(login.Checker)
2469
2470	mux.Handle("/api", login.TokenRequired(http.HandlerFunc(apihandler)))
2471
2472	posters := mux.Methods("POST").Subrouter()
2473	getters := mux.Methods("GET").Subrouter()
2474
2475	getters.HandleFunc("/", homepage)
2476	getters.HandleFunc("/home", homepage)
2477	getters.HandleFunc("/front", homepage)
2478	getters.HandleFunc("/events", homepage)
2479	getters.HandleFunc("/robots.txt", nomoroboto)
2480	getters.HandleFunc("/rss", showrss)
2481	getters.HandleFunc("/"+userSep+"/{name:[[:alnum:]]+}", showuser)
2482	getters.HandleFunc("/"+userSep+"/{name:[[:alnum:]]+}/"+honkSep+"/{xid:[[:alnum:]]+}", showonehonk)
2483	getters.HandleFunc("/"+userSep+"/{name:[[:alnum:]]+}/rss", showrss)
2484	posters.HandleFunc("/"+userSep+"/{name:[[:alnum:]]+}/inbox", inbox)
2485	getters.HandleFunc("/"+userSep+"/{name:[[:alnum:]]+}/outbox", outbox)
2486	getters.HandleFunc("/"+userSep+"/{name:[[:alnum:]]+}/followers", emptiness)
2487	getters.HandleFunc("/"+userSep+"/{name:[[:alnum:]]+}/following", emptiness)
2488	getters.HandleFunc("/a", avatate)
2489	getters.HandleFunc("/o", thelistingoftheontologies)
2490	getters.HandleFunc("/o/{name:.+}", showontology)
2491	getters.HandleFunc("/d/{xid:[[:alnum:].]+}", servefile)
2492	getters.HandleFunc("/emu/{emu:[^.]*[^/]+}", serveemu)
2493	getters.HandleFunc("/meme/{meme:[^.]*[^/]+}", servememe)
2494	getters.HandleFunc("/.well-known/webfinger", fingerlicker)
2495
2496	getters.HandleFunc("/flag/{code:.+}", showflag)
2497
2498	getters.HandleFunc("/server", serveractor)
2499	posters.HandleFunc("/server/inbox", serverinbox)
2500	posters.HandleFunc("/inbox", serverinbox)
2501
2502	getters.HandleFunc("/style.css", serveasset)
2503	getters.HandleFunc("/local.css", serveasset)
2504	getters.HandleFunc("/honkpage.js", serveasset)
2505	getters.HandleFunc("/about", servehtml)
2506	getters.HandleFunc("/login", servehtml)
2507	posters.HandleFunc("/dologin", login.LoginFunc)
2508	getters.HandleFunc("/logout", login.LogoutFunc)
2509	getters.HandleFunc("/help/{name:[[:alnum:]_.-]+}", servehelp)
2510
2511	loggedin := mux.NewRoute().Subrouter()
2512	loggedin.Use(login.Required)
2513	loggedin.HandleFunc("/first", homepage)
2514	loggedin.HandleFunc("/chatter", showchatter)
2515	loggedin.Handle("/sendchonk", login.CSRFWrap("sendchonk", http.HandlerFunc(submitchonk)))
2516	loggedin.HandleFunc("/saved", homepage)
2517	loggedin.HandleFunc("/account", accountpage)
2518	loggedin.HandleFunc("/funzone", showfunzone)
2519	loggedin.HandleFunc("/chpass", dochpass)
2520	loggedin.HandleFunc("/atme", homepage)
2521	loggedin.HandleFunc("/longago", homepage)
2522	loggedin.HandleFunc("/hfcs", hfcspage)
2523	loggedin.HandleFunc("/xzone", xzone)
2524	loggedin.HandleFunc("/newhonk", newhonkpage)
2525	loggedin.HandleFunc("/edit", edithonkpage)
2526	loggedin.Handle("/honk", login.CSRFWrap("honkhonk", http.HandlerFunc(submitwebhonk)))
2527	loggedin.Handle("/bonk", login.CSRFWrap("honkhonk", http.HandlerFunc(submitbonk)))
2528	loggedin.Handle("/zonkit", login.CSRFWrap("honkhonk", http.HandlerFunc(zonkit)))
2529	loggedin.Handle("/savehfcs", login.CSRFWrap("filter", http.HandlerFunc(savehfcs)))
2530	loggedin.Handle("/saveuser", login.CSRFWrap("saveuser", http.HandlerFunc(saveuser)))
2531	loggedin.Handle("/ximport", login.CSRFWrap("ximport", http.HandlerFunc(ximport)))
2532	loggedin.HandleFunc("/honkers", showhonkers)
2533	loggedin.HandleFunc("/h/{name:[[:alnum:]_.-]+}", showhonker)
2534	loggedin.HandleFunc("/h", showhonker)
2535	loggedin.HandleFunc("/c/{name:[[:alnum:]_.-]+}", showcombo)
2536	loggedin.HandleFunc("/c", showcombos)
2537	loggedin.HandleFunc("/t", showconvoy)
2538	loggedin.HandleFunc("/q", showsearch)
2539	loggedin.HandleFunc("/hydra", webhydra)
2540	loggedin.Handle("/submithonker", login.CSRFWrap("submithonker", http.HandlerFunc(submithonker)))
2541
2542	err = http.Serve(listener, mux)
2543	if err != nil {
2544		log.Fatal(err)
2545	}
2546}