all repos — honk @ 5d8298cf3ac70bf4a47e7be4882c5c997dad25d8

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	"crypto/sha512"
  21	"database/sql"
  22	"errors"
  23	"fmt"
  24	"html/template"
  25	"io"
  26	notrand "math/rand"
  27	"mime/multipart"
  28	"net"
  29	"net/http"
  30	"net/http/fcgi"
  31	"net/url"
  32	"os"
  33	"os/signal"
  34	"regexp"
  35	"runtime/pprof"
  36	"sort"
  37	"strconv"
  38	"strings"
  39	"sync"
  40	"syscall"
  41	"time"
  42	"unicode/utf8"
  43
  44	"github.com/gorilla/mux"
  45	"humungus.tedunangst.com/r/gonix"
  46	"humungus.tedunangst.com/r/webs/gencache"
  47	"humungus.tedunangst.com/r/webs/httpsig"
  48	"humungus.tedunangst.com/r/webs/junk"
  49	"humungus.tedunangst.com/r/webs/login"
  50	"humungus.tedunangst.com/r/webs/rss"
  51	"humungus.tedunangst.com/r/webs/templates"
  52)
  53
  54var readviews *templates.Template
  55
  56var userSep = "u"
  57var honkSep = "h"
  58
  59var develMode = false
  60
  61var allemus []Emu
  62
  63func getuserstyle(u *login.UserInfo) template.HTMLAttr {
  64	if u == nil {
  65		return ""
  66	}
  67	user, _ := butwhatabout(u.Username)
  68	class := template.HTMLAttr("")
  69	if user.Options.SkinnyCSS {
  70		class += `class="skinny"`
  71	}
  72	return class
  73}
  74
  75func getmaplink(u *login.UserInfo) string {
  76	if u == nil {
  77		return "osm"
  78	}
  79	user, _ := butwhatabout(u.Username)
  80	ml := user.Options.MapLink
  81	if ml == "" {
  82		ml = "osm"
  83	}
  84	return ml
  85}
  86
  87func getInfo(r *http.Request) map[string]interface{} {
  88	templinfo := make(map[string]interface{})
  89	templinfo["StyleParam"] = getassetparam(viewDir + "/views/style.css")
  90	templinfo["LocalStyleParam"] = getassetparam(dataDir + "/views/local.css")
  91	templinfo["JSParam"] = getassetparam(viewDir + "/views/honkpage.js")
  92	templinfo["MiscJSParam"] = getassetparam(viewDir + "/views/misc.js")
  93	templinfo["LocalJSParam"] = getassetparam(dataDir + "/views/local.js")
  94	templinfo["ServerName"] = serverName
  95	templinfo["IconName"] = iconName
  96	templinfo["UserSep"] = userSep
  97	if r == nil {
  98		return templinfo
  99	}
 100	if u := login.GetUserInfo(r); u != nil {
 101		templinfo["UserInfo"], _ = butwhatabout(u.Username)
 102		templinfo["UserStyle"] = getuserstyle(u)
 103		combos, _ := combocache.Get(UserID(u.UserID))
 104		templinfo["Combos"] = combos
 105	}
 106	return templinfo
 107}
 108
 109var oldnews = gencache.New(gencache.Options[string, []byte]{
 110	Fill: func(url string) ([]byte, bool) {
 111		templinfo := getInfo(nil)
 112		var honks []*Honk
 113		var userid UserID = -1
 114
 115		templinfo["ServerMessage"] = serverMsg
 116		switch url {
 117		case "/events":
 118			honks = geteventhonks(userid)
 119			templinfo["ServerMessage"] = "some recent and upcoming events"
 120		default:
 121			templinfo["ShowRSS"] = true
 122			honks = getpublichonks()
 123		}
 124		reverbolate(userid, honks)
 125		templinfo["Honks"] = honks
 126		templinfo["MapLink"] = getmaplink(nil)
 127		var buf bytes.Buffer
 128		err := readviews.Execute(&buf, "honkpage.html", templinfo)
 129		if err != nil {
 130			elog.Print(err)
 131		}
 132		return buf.Bytes(), true
 133
 134	},
 135	Duration: 1 * time.Minute,
 136})
 137
 138func lonelypage(w http.ResponseWriter, r *http.Request) {
 139	page, _ := oldnews.Get(r.URL.Path)
 140	if !develMode {
 141		w.Header().Set("Cache-Control", "max-age=60")
 142	}
 143	w.Write(page)
 144}
 145
 146func homepage(w http.ResponseWriter, r *http.Request) {
 147	u := login.GetUserInfo(r)
 148	if u == nil {
 149		lonelypage(w, r)
 150		return
 151	}
 152	templinfo := getInfo(r)
 153	var honks []*Honk
 154	var userid UserID = -1
 155
 156	templinfo["ServerMessage"] = serverMsg
 157	if u == nil || r.URL.Path == "/front" {
 158		switch r.URL.Path {
 159		case "/events":
 160			honks = geteventhonks(userid)
 161			templinfo["ServerMessage"] = "some recent and upcoming events"
 162		default:
 163			templinfo["ShowRSS"] = true
 164			honks = getpublichonks()
 165		}
 166	} else {
 167		userid = UserID(u.UserID)
 168		switch r.URL.Path {
 169		case "/atme":
 170			templinfo["ServerMessage"] = "at me!"
 171			templinfo["PageName"] = "atme"
 172			honks = gethonksforme(userid, 0)
 173			honks = osmosis(honks, userid, false)
 174			menewnone(userid)
 175			templinfo["UserInfo"], _ = butwhatabout(u.Username)
 176		case "/longago":
 177			templinfo["ServerMessage"] = "long ago and far away!"
 178			templinfo["PageName"] = "longago"
 179			honks = gethonksfromlongago(userid, 0)
 180			honks = osmosis(honks, userid, false)
 181		case "/events":
 182			templinfo["ServerMessage"] = "some recent and upcoming events"
 183			templinfo["PageName"] = "events"
 184			honks = geteventhonks(userid)
 185			honks = osmosis(honks, userid, true)
 186		case "/first":
 187			templinfo["PageName"] = "first"
 188			honks = gethonksforuserfirstclass(userid, 0)
 189			honks = osmosis(honks, userid, true)
 190		case "/saved":
 191			templinfo["ServerMessage"] = "saved honks"
 192			templinfo["PageName"] = "saved"
 193			honks = getsavedhonks(userid, 0)
 194		default:
 195			templinfo["PageName"] = "home"
 196			honks = gethonksforuser(userid, 0)
 197			honks = osmosis(honks, userid, true)
 198		}
 199		templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
 200	}
 201
 202	honkpage(w, u, honks, templinfo)
 203}
 204
 205func showemus(w http.ResponseWriter, r *http.Request) {
 206	templinfo := getInfo(r)
 207	templinfo["Emus"] = allemus
 208	err := readviews.Execute(w, "emus.html", templinfo)
 209	if err != nil {
 210		elog.Print(err)
 211	}
 212}
 213
 214func showfunzone(w http.ResponseWriter, r *http.Request) {
 215	var emunames, memenames []string
 216	emuext := make(map[string]string)
 217	dir, err := os.Open(dataDir + "/emus")
 218	if err == nil {
 219		emunames, _ = dir.Readdirnames(0)
 220		dir.Close()
 221	}
 222	for i, e := range emunames {
 223		if len(e) > 4 {
 224			emunames[i] = e[:len(e)-4]
 225			emuext[emunames[i]] = e[len(e)-4:]
 226		}
 227	}
 228	dir, err = os.Open(dataDir + "/memes")
 229	if err == nil {
 230		memenames, _ = dir.Readdirnames(0)
 231		dir.Close()
 232	}
 233	sort.Strings(emunames)
 234	sort.Strings(memenames)
 235	templinfo := getInfo(r)
 236	templinfo["Emus"] = emunames
 237	templinfo["Emuext"] = emuext
 238	templinfo["Memes"] = memenames
 239	err = readviews.Execute(w, "funzone.html", templinfo)
 240	if err != nil {
 241		elog.Print(err)
 242	}
 243}
 244
 245func showrss(w http.ResponseWriter, r *http.Request) {
 246	name := mux.Vars(r)["name"]
 247
 248	var honks []*Honk
 249	if name != "" {
 250		honks = gethonksbyuser(name, false, 0)
 251	} else {
 252		honks = getpublichonks()
 253	}
 254	reverbolate(-1, honks)
 255
 256	home := serverURL("/")
 257	base := home
 258	if name != "" {
 259		home += "u/" + name
 260		name += " "
 261	}
 262	feed := rss.Feed{
 263		Title:       name + "honk",
 264		Link:        home,
 265		Description: name + "honk rss",
 266		Image: &rss.Image{
 267			URL:   base + "icon.png",
 268			Title: name + "honk rss",
 269			Link:  home,
 270		},
 271	}
 272	var modtime time.Time
 273	for _, honk := range honks {
 274		if !firstclass(honk) {
 275			continue
 276		}
 277		desc := string(honk.HTML)
 278		if t := honk.Time; t != nil {
 279			desc += fmt.Sprintf(`<p>Time: %s`, t.StartTime.Local().Format("03:04PM MST Mon Jan 02"))
 280			if t.Duration != 0 {
 281				desc += fmt.Sprintf(`<br>Duration: %s`, t.Duration)
 282			}
 283		}
 284		if p := honk.Place; p != nil {
 285			desc += string(templates.Sprintf(`<p>Location: <a href="%s">%s</a> %f %f`,
 286				p.Url, p.Name, p.Latitude, p.Longitude))
 287		}
 288		for _, d := range honk.Donks {
 289			desc += string(templates.Sprintf(`<p><a href="%s">Attachment: %s</a>`,
 290				d.URL, d.Desc))
 291			if strings.HasPrefix(d.Media, "image") {
 292				desc += string(templates.Sprintf(`<img src="%s">`, d.URL))
 293			}
 294		}
 295
 296		feed.Items = append(feed.Items, &rss.Item{
 297			Title:       fmt.Sprintf("%s %s %s", honk.Username, honk.What, honk.XID),
 298			Description: rss.CData{Data: desc},
 299			Link:        honk.URL,
 300			PubDate:     honk.Date.Format(time.RFC1123),
 301			Guid:        &rss.Guid{IsPermaLink: true, Value: honk.URL},
 302		})
 303		if honk.Date.After(modtime) {
 304			modtime = honk.Date
 305		}
 306	}
 307	if !develMode {
 308		w.Header().Set("Cache-Control", "max-age=300")
 309		w.Header().Set("Last-Modified", modtime.Format(http.TimeFormat))
 310	}
 311
 312	err := feed.Write(w)
 313	if err != nil {
 314		elog.Printf("error writing rss: %s", err)
 315	}
 316}
 317
 318func crappola(j junk.Junk) bool {
 319	t := firstofmany(j, "type")
 320	if t == "Delete" {
 321		a, _ := j.GetString("actor")
 322		o, _ := j.GetString("object")
 323		if a == o {
 324			dlog.Printf("crappola from %s", a)
 325			return true
 326		}
 327	}
 328	if t == "Announce" {
 329		if obj, ok := j.GetMap("object"); ok {
 330			j = obj
 331			t = firstofmany(j, "type")
 332		}
 333	}
 334	if t == "Undo" {
 335		if obj, ok := j.GetMap("object"); ok {
 336			j = obj
 337			t = firstofmany(j, "type")
 338		}
 339	}
 340	if t == "Like" || t == "Dislike" || t == "Listen" {
 341		return true
 342	}
 343	if t == "EmojiReact" {
 344		o, _ := j.GetString("object")
 345		if originate(o) != serverName {
 346			return true
 347		}
 348	}
 349	return false
 350}
 351
 352func ping(user *WhatAbout, who string) {
 353	if targ := fullname(who, user.ID); targ != "" {
 354		who = targ
 355	}
 356	if !strings.HasPrefix(who, "https://") {
 357		who = gofish(who)
 358	}
 359	if who == "" {
 360		ilog.Printf("nobody to ping!")
 361		return
 362	}
 363	box, ok := boxofboxes.Get(who)
 364	if !ok {
 365		ilog.Printf("no inbox to ping %s", who)
 366		return
 367	}
 368	ilog.Printf("sending ping to %s", box.In)
 369	j := junk.New()
 370	j["@context"] = itiswhatitis
 371	j["type"] = "Ping"
 372	j["id"] = user.URL + "/ping/" + xfiltrate()
 373	j["actor"] = user.URL
 374	j["to"] = who
 375	ki := ziggy(user.ID)
 376	if ki == nil {
 377		return
 378	}
 379	err := PostJunk(ki.keyname, ki.seckey, box.In, j)
 380	if err != nil {
 381		elog.Printf("can't send ping: %s", err)
 382		return
 383	}
 384	ilog.Printf("sent ping to %s: %s", who, j["id"])
 385}
 386
 387func pong(user *WhatAbout, who string, obj string) {
 388	box, ok := boxofboxes.Get(who)
 389	if !ok {
 390		ilog.Printf("no inbox to pong %s", who)
 391		return
 392	}
 393	j := junk.New()
 394	j["@context"] = itiswhatitis
 395	j["type"] = "Pong"
 396	j["id"] = user.URL + "/pong/" + xfiltrate()
 397	j["actor"] = user.URL
 398	j["to"] = who
 399	j["object"] = obj
 400	ki := ziggy(user.ID)
 401	if ki == nil {
 402		return
 403	}
 404	err := PostJunk(ki.keyname, ki.seckey, box.In, j)
 405	if err != nil {
 406		elog.Printf("can't send pong: %s", err)
 407		return
 408	}
 409}
 410
 411func inbox(w http.ResponseWriter, r *http.Request) {
 412	name := mux.Vars(r)["name"]
 413	user, err := butwhatabout(name)
 414	if err != nil {
 415		http.NotFound(w, r)
 416		return
 417	}
 418	if stealthmode(user.ID, r) {
 419		http.NotFound(w, r)
 420		return
 421	}
 422	var buf bytes.Buffer
 423	limiter := io.LimitReader(r.Body, 1*1024*1024)
 424	io.Copy(&buf, limiter)
 425	payload := buf.Bytes()
 426	j, err := junk.FromBytes(payload)
 427	if err != nil {
 428		ilog.Printf("bad payload: %s", err)
 429		ilog.Writer().Write(payload)
 430		ilog.Writer().Write([]byte{'\n'})
 431		return
 432	}
 433
 434	if crappola(j) {
 435		return
 436	}
 437	what := firstofmany(j, "type")
 438	who, _ := j.GetString("actor")
 439	if rejectactor(user.ID, who) {
 440		return
 441	}
 442
 443	keyname, err := httpsig.VerifyRequest(r, payload, zaggy)
 444	if err != nil && keyname != "" {
 445		savingthrow(keyname)
 446		keyname, err = httpsig.VerifyRequest(r, payload, zaggy)
 447	}
 448	if err != nil {
 449		ilog.Printf("inbox message failed signature for %s from %s: %s", keyname, r.Header.Get("X-Forwarded-For"), err)
 450		if keyname != "" {
 451			ilog.Printf("bad signature from %s", keyname)
 452		}
 453		http.Error(w, "what did you call me?", http.StatusUnauthorized)
 454		return
 455	}
 456	origin := keymatch(keyname, who)
 457	if origin == "" {
 458		ilog.Printf("keyname actor mismatch: %s <> %s", keyname, who)
 459		if what == "Create" {
 460			var xid string
 461			obj, ok := j.GetMap("object")
 462			if ok {
 463				xid, _ = obj.GetString("id")
 464			} else {
 465				xid, _ = j.GetString("object")
 466			}
 467			if xid != "" {
 468				dlog.Printf("getting forwarded create from %s: %s", keyname, xid)
 469				go grabhonk(user, xid)
 470			}
 471		}
 472		return
 473	}
 474
 475	switch what {
 476	case "Ping":
 477		id, _ := j.GetString("id")
 478		ilog.Printf("ping from %s: %s", who, id)
 479		pong(user, who, id)
 480	case "Pong":
 481		obj, _ := j.GetString("object")
 482		ilog.Printf("pong from %s: %s", who, obj)
 483	case "Follow":
 484		obj, _ := j.GetString("object")
 485		if obj != user.URL {
 486			ilog.Printf("can't follow %s", obj)
 487			return
 488		}
 489		followme(user, who, who, j)
 490	case "Accept":
 491		followyou2(user, j)
 492	case "Reject":
 493		nofollowyou2(user, j)
 494	case "Update":
 495		obj, ok := j.GetMap("object")
 496		if ok {
 497			what := firstofmany(obj, "type")
 498			switch what {
 499			case "Service":
 500				fallthrough
 501			case "Person":
 502				return
 503			case "Question":
 504				return
 505			}
 506		}
 507		go xonksaver(user, j, origin)
 508	case "Undo":
 509		obj, ok := j.GetMap("object")
 510		if !ok {
 511			folxid, ok := j.GetString("object")
 512			if ok && originate(folxid) == origin {
 513				unfollowme(user, "", "", j)
 514			}
 515			return
 516		}
 517		what := firstofmany(obj, "type")
 518		switch what {
 519		case "Follow":
 520			unfollowme(user, who, who, j)
 521		case "Announce":
 522			xid, _ := obj.GetString("object")
 523			dlog.Printf("undo announce: %s", xid)
 524		case "Like":
 525		default:
 526			ilog.Printf("unknown undo: %s", what)
 527		}
 528	case "EmojiReact":
 529		obj, ok := j.GetString("object")
 530		if ok {
 531			content, _ := j.GetString("content")
 532			addreaction(user, obj, who, content)
 533		}
 534	default:
 535		go saveandcheck(user, j, origin)
 536	}
 537}
 538
 539func saveandcheck(user *WhatAbout, j junk.Junk, origin string) {
 540	xonk := xonksaver(user, j, origin)
 541	if xonk == nil {
 542		return
 543	}
 544	if sname := shortname(user.ID, xonk.Honker); sname == "" {
 545		dlog.Printf("received unexpected activity from %s", xonk.Honker)
 546		if xonk.Whofore == 0 {
 547			dlog.Printf("it's not even for me!")
 548		}
 549	}
 550}
 551
 552func serverinbox(w http.ResponseWriter, r *http.Request) {
 553	user := getserveruser()
 554	if stealthmode(user.ID, r) {
 555		http.NotFound(w, r)
 556		return
 557	}
 558	var buf bytes.Buffer
 559	io.Copy(&buf, r.Body)
 560	payload := buf.Bytes()
 561	j, err := junk.FromBytes(payload)
 562	if err != nil {
 563		ilog.Printf("bad payload: %s", err)
 564		ilog.Writer().Write(payload)
 565		ilog.Writer().Write([]byte{'\n'})
 566		return
 567	}
 568	if crappola(j) {
 569		return
 570	}
 571	keyname, err := httpsig.VerifyRequest(r, payload, zaggy)
 572	if err != nil && keyname != "" {
 573		savingthrow(keyname)
 574		keyname, err = httpsig.VerifyRequest(r, payload, zaggy)
 575	}
 576	if err != nil {
 577		ilog.Printf("inbox message failed signature for %s from %s: %s", keyname, r.Header.Get("X-Forwarded-For"), err)
 578		if keyname != "" {
 579			ilog.Printf("bad signature from %s", keyname)
 580		}
 581		http.Error(w, "what did you call me?", http.StatusUnauthorized)
 582		return
 583	}
 584	who, _ := j.GetString("actor")
 585	origin := keymatch(keyname, who)
 586	if origin == "" {
 587		ilog.Printf("keyname actor mismatch: %s <> %s", keyname, who)
 588		return
 589	}
 590	if rejectactor(user.ID, who) {
 591		return
 592	}
 593	re_ont := regexp.MustCompile(serverURL("/o") + "/([\\pL[:digit:]]+)")
 594	what := firstofmany(j, "type")
 595	dlog.Printf("server got a %s", what)
 596	switch what {
 597	case "Follow":
 598		obj, _ := j.GetString("object")
 599		if obj == user.URL {
 600			ilog.Printf("can't follow the server!")
 601			return
 602		}
 603		m := re_ont.FindStringSubmatch(obj)
 604		if len(m) != 2 {
 605			ilog.Printf("not sure how to handle this")
 606			return
 607		}
 608		ont := "#" + m[1]
 609
 610		followme(user, who, ont, j)
 611	case "Undo":
 612		obj, ok := j.GetMap("object")
 613		if !ok {
 614			ilog.Printf("unknown undo no object")
 615			return
 616		}
 617		what := firstofmany(obj, "type")
 618		if what != "Follow" {
 619			ilog.Printf("unknown undo: %s", what)
 620			return
 621		}
 622		targ, _ := obj.GetString("object")
 623		m := re_ont.FindStringSubmatch(targ)
 624		if len(m) != 2 {
 625			ilog.Printf("not sure how to handle this")
 626			return
 627		}
 628		ont := "#" + m[1]
 629		unfollowme(user, who, ont, j)
 630	default:
 631		ilog.Printf("unhandled server activity: %s", what)
 632		dumpactivity(j)
 633	}
 634}
 635
 636func serveractor(w http.ResponseWriter, r *http.Request) {
 637	user := getserveruser()
 638	if stealthmode(user.ID, r) {
 639		http.NotFound(w, r)
 640		return
 641	}
 642	j := junkuser(user)
 643	j.Write(w)
 644}
 645
 646func ximport(w http.ResponseWriter, r *http.Request) {
 647	u := login.GetUserInfo(r)
 648	xid := strings.TrimSpace(r.FormValue("q"))
 649	xonk := getxonk(UserID(u.UserID), xid)
 650	if xonk == nil {
 651		p, _ := investigate(xid)
 652		if p != nil {
 653			xid = p.XID
 654		}
 655		j, err := GetJunk(UserID(u.UserID), xid)
 656		if err != nil {
 657			http.Error(w, "error getting external object", http.StatusInternalServerError)
 658			ilog.Printf("error getting external object: %s", err)
 659			return
 660		}
 661		allinjest(originate(xid), j)
 662		dlog.Printf("importing %s", xid)
 663		user, _ := butwhatabout(u.Username)
 664
 665		info, _ := somethingabout(j)
 666		if info == nil {
 667			xonk = xonksaver(user, j, originate(xid))
 668		} else if info.What == SomeActor {
 669			outbox, _ := j.GetString("outbox")
 670			gimmexonks(user, outbox)
 671			http.Redirect(w, r, "/h?xid="+url.QueryEscape(xid), http.StatusSeeOther)
 672			return
 673		} else if info.What == SomeCollection {
 674			gimmexonks(user, xid)
 675			http.Redirect(w, r, "/xzone", http.StatusSeeOther)
 676			return
 677		}
 678	}
 679	convoy := ""
 680	if xonk != nil {
 681		convoy = xonk.Convoy
 682	}
 683	http.Redirect(w, r, "/t?c="+url.QueryEscape(convoy), http.StatusSeeOther)
 684}
 685
 686func xzone(w http.ResponseWriter, r *http.Request) {
 687	u := login.GetUserInfo(r)
 688	rows, err := stmtRecentHonkers.Query(u.UserID, u.UserID)
 689	if err != nil {
 690		elog.Printf("query err: %s", err)
 691		return
 692	}
 693	defer rows.Close()
 694	var honkers []Honker
 695	for rows.Next() {
 696		var xid string
 697		rows.Scan(&xid)
 698		honkers = append(honkers, Honker{XID: xid})
 699	}
 700	rows.Close()
 701	for i := range honkers {
 702		_, honkers[i].Handle = handles(honkers[i].XID)
 703	}
 704	templinfo := getInfo(r)
 705	templinfo["XCSRF"] = login.GetCSRF("ximport", r)
 706	templinfo["Honkers"] = honkers
 707	err = readviews.Execute(w, "xzone.html", templinfo)
 708	if err != nil {
 709		elog.Print(err)
 710	}
 711}
 712
 713var oldoutbox = gencache.New(gencache.Options[string, []byte]{Fill: func(name string) ([]byte, bool) {
 714	user, err := butwhatabout(name)
 715	if err != nil {
 716		return nil, false
 717	}
 718	honks := gethonksbyuser(name, false, 0)
 719	if len(honks) > 20 {
 720		honks = honks[0:20]
 721	}
 722
 723	var jonks []junk.Junk
 724	for _, h := range honks {
 725		j, _ := jonkjonk(user, h)
 726		jonks = append(jonks, j)
 727	}
 728
 729	j := junk.New()
 730	j["@context"] = itiswhatitis
 731	j["id"] = user.URL + "/outbox"
 732	j["attributedTo"] = user.URL
 733	j["type"] = "OrderedCollection"
 734	j["totalItems"] = len(jonks)
 735	j["orderedItems"] = jonks
 736
 737	return j.ToBytes(), true
 738}, Duration: 1 * time.Minute})
 739
 740func outbox(w http.ResponseWriter, r *http.Request) {
 741	name := mux.Vars(r)["name"]
 742	user, err := butwhatabout(name)
 743	if err != nil {
 744		http.NotFound(w, r)
 745		return
 746	}
 747	if stealthmode(user.ID, r) {
 748		http.NotFound(w, r)
 749		return
 750	}
 751	j, ok := oldoutbox.Get(name)
 752	if ok {
 753		w.Header().Set("Content-Type", theonetruename)
 754		w.Write(j)
 755	} else {
 756		http.NotFound(w, r)
 757	}
 758}
 759
 760var oldempties = gencache.New(gencache.Options[string, []byte]{Fill: func(url string) ([]byte, bool) {
 761	colname := "/followers"
 762	if strings.HasSuffix(url, "/following") {
 763		colname = "/following"
 764	}
 765	user := serverURL("%s", url[:len(url)-10])
 766	j := junk.New()
 767	j["@context"] = itiswhatitis
 768	j["id"] = user + colname
 769	j["attributedTo"] = user
 770	j["type"] = "OrderedCollection"
 771	j["totalItems"] = 0
 772	j["orderedItems"] = []junk.Junk{}
 773
 774	return j.ToBytes(), true
 775}})
 776
 777func emptiness(w http.ResponseWriter, r *http.Request) {
 778	name := mux.Vars(r)["name"]
 779	user, err := butwhatabout(name)
 780	if err != nil {
 781		http.NotFound(w, r)
 782		return
 783	}
 784	if stealthmode(user.ID, r) {
 785		http.NotFound(w, r)
 786		return
 787	}
 788	j, ok := oldempties.Get(r.URL.Path)
 789	if ok {
 790		w.Header().Set("Content-Type", theonetruename)
 791		w.Write(j)
 792	} else {
 793		http.NotFound(w, r)
 794	}
 795}
 796
 797func showuser(w http.ResponseWriter, r *http.Request) {
 798	name := mux.Vars(r)["name"]
 799	user, err := butwhatabout(name)
 800	if err != nil {
 801		ilog.Printf("user not found %s: %s", name, err)
 802		http.NotFound(w, r)
 803		return
 804	}
 805	if stealthmode(user.ID, r) {
 806		http.NotFound(w, r)
 807		return
 808	}
 809	wantjson := false
 810	if strings.HasSuffix(r.URL.Path, ".json") {
 811		wantjson = true
 812	}
 813	if friendorfoe(r.Header.Get("Accept")) || wantjson {
 814		j, ok := asjonker(name)
 815		if ok {
 816			w.Header().Set("Content-Type", theonetruename)
 817			w.Write(j)
 818		} else {
 819			http.NotFound(w, r)
 820		}
 821		return
 822	}
 823	u := login.GetUserInfo(r)
 824	if u != nil && u.Username != name {
 825		u = nil
 826	}
 827	honks := gethonksbyuser(name, u != nil, 0)
 828	templinfo := getInfo(r)
 829	templinfo["PageName"] = "user"
 830	templinfo["PageArg"] = name
 831	templinfo["Name"] = user.Name
 832	templinfo["Honkology"] = oguser(user)
 833	templinfo["WhatAbout"] = user.HTAbout
 834	templinfo["ServerMessage"] = ""
 835	templinfo["APAltLink"] = templates.Sprintf("<link href='%s' rel='alternate' type='application/activity+json'>", user.URL)
 836	if u != nil {
 837		templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
 838	}
 839	honkpage(w, u, honks, templinfo)
 840}
 841
 842func showhonker(w http.ResponseWriter, r *http.Request) {
 843	u := login.GetUserInfo(r)
 844	name := mux.Vars(r)["name"]
 845	var honks []*Honk
 846	if name == "" {
 847		name = r.FormValue("xid")
 848		honks = gethonksbyxonker(UserID(u.UserID), name, 0)
 849	} else {
 850		honks = gethonksbyhonker(UserID(u.UserID), name, 0)
 851	}
 852	miniform := templates.Sprintf(`<form action="/submithonker" method="POST">
 853<input type="hidden" name="CSRF" value="%s">
 854<input type="hidden" name="url" value="%s">
 855<button tabindex=1 name="add honker" value="add honker">add honker</button>
 856</form>`, login.GetCSRF("submithonker", r), name)
 857	msg := templates.Sprintf(`honks by honker: <a href="%s" ref="noreferrer">%s</a>%s`, name, name, miniform)
 858	templinfo := getInfo(r)
 859	templinfo["PageName"] = "honker"
 860	templinfo["PageArg"] = name
 861	templinfo["ServerMessage"] = msg
 862	templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
 863	honkpage(w, u, honks, templinfo)
 864}
 865
 866func showcombo(w http.ResponseWriter, r *http.Request) {
 867	name := mux.Vars(r)["name"]
 868	u := login.GetUserInfo(r)
 869	honks := gethonksbycombo(UserID(u.UserID), name, 0)
 870	honks = osmosis(honks, UserID(u.UserID), true)
 871	templinfo := getInfo(r)
 872	templinfo["PageName"] = "combo"
 873	templinfo["PageArg"] = name
 874	templinfo["ServerMessage"] = "honks by combo: " + name
 875	templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
 876	honkpage(w, u, honks, templinfo)
 877}
 878func showconvoy(w http.ResponseWriter, r *http.Request) {
 879	c := r.FormValue("c")
 880	u := login.GetUserInfo(r)
 881	honks := gethonksbyconvoy(UserID(u.UserID), c, 0)
 882	templinfo := getInfo(r)
 883	if len(honks) > 0 {
 884		templinfo["TopHID"] = honks[0].ID
 885	}
 886	honks = osmosis(honks, UserID(u.UserID), false)
 887	//reversehonks(honks)
 888	honks = threadsort(honks)
 889	templinfo["PageName"] = "convoy"
 890	templinfo["PageArg"] = c
 891	templinfo["ServerMessage"] = "honks in convoy: " + c
 892	templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
 893	honkpage(w, u, honks, templinfo)
 894}
 895func showsearch(w http.ResponseWriter, r *http.Request) {
 896	q := r.FormValue("q")
 897	if strings.HasPrefix(q, "https://") {
 898		ximport(w, r)
 899		return
 900	}
 901	u := login.GetUserInfo(r)
 902	honks := gethonksbysearch(UserID(u.UserID), q, 0)
 903	templinfo := getInfo(r)
 904	templinfo["PageName"] = "search"
 905	templinfo["PageArg"] = q
 906	templinfo["ServerMessage"] = "honks for search: " + q
 907	templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
 908	honkpage(w, u, honks, templinfo)
 909}
 910func showontology(w http.ResponseWriter, r *http.Request) {
 911	name := mux.Vars(r)["name"]
 912	u := login.GetUserInfo(r)
 913	var userid UserID = -1
 914	if u != nil {
 915		userid = UserID(u.UserID)
 916	}
 917	honks := gethonksbyontology(userid, "#"+name, 0)
 918	if friendorfoe(r.Header.Get("Accept")) {
 919		if len(honks) > 40 {
 920			honks = honks[0:40]
 921		}
 922
 923		var xids []string
 924		for _, h := range honks {
 925			xids = append(xids, h.XID)
 926		}
 927
 928		user := getserveruser()
 929
 930		j := junk.New()
 931		j["@context"] = itiswhatitis
 932		j["id"] = serverURL("/o/%s", name)
 933		j["name"] = "#" + name
 934		j["attributedTo"] = user.URL
 935		j["type"] = "OrderedCollection"
 936		j["totalItems"] = len(xids)
 937		j["orderedItems"] = xids
 938
 939		j.Write(w)
 940		return
 941	}
 942
 943	templinfo := getInfo(r)
 944	templinfo["ServerMessage"] = "honks by ontology: " + name
 945	templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
 946	honkpage(w, u, honks, templinfo)
 947}
 948
 949type Ont struct {
 950	Name  string
 951	Count int64
 952}
 953
 954func thelistingoftheontologies(w http.ResponseWriter, r *http.Request) {
 955	u := login.GetUserInfo(r)
 956	var userid UserID = -1
 957	if u != nil {
 958		userid = UserID(u.UserID)
 959	}
 960	rows, err := stmtAllOnts.Query(userid)
 961	if err != nil {
 962		elog.Printf("selection error: %s", err)
 963		return
 964	}
 965	defer rows.Close()
 966	var onts, pops []Ont
 967	for rows.Next() {
 968		var o Ont
 969		err := rows.Scan(&o.Name, &o.Count)
 970		if err != nil {
 971			elog.Printf("error scanning ont: %s", err)
 972			continue
 973		}
 974		if utf8.RuneCountInString(o.Name) > 24 {
 975			continue
 976		}
 977		o.Name = o.Name[1:]
 978		onts = append(onts, o)
 979		if o.Count > 1 {
 980			pops = append(pops, o)
 981		}
 982	}
 983	sort.Slice(onts, func(i, j int) bool {
 984		return onts[i].Name < onts[j].Name
 985	})
 986	sort.Slice(pops, func(i, j int) bool {
 987		return pops[i].Count > pops[j].Count
 988	})
 989	if len(pops) > 40 {
 990		pops = pops[:40]
 991	}
 992	if u == nil && !develMode {
 993		w.Header().Set("Cache-Control", "max-age=300")
 994	}
 995	templinfo := getInfo(r)
 996	templinfo["Pops"] = pops
 997	templinfo["Onts"] = onts
 998	templinfo["FirstRune"] = firstRune
 999	err = readviews.Execute(w, "onts.html", templinfo)
1000	if err != nil {
1001		elog.Print(err)
1002	}
1003}
1004
1005type Track struct {
1006	xid string
1007	who string
1008}
1009
1010func getbacktracks(xid string) []string {
1011	c := make(chan bool)
1012	dumptracks <- c
1013	<-c
1014	row := stmtGetTracks.QueryRow(xid)
1015	var rawtracks string
1016	err := row.Scan(&rawtracks)
1017	if err != nil {
1018		if err != sql.ErrNoRows {
1019			elog.Printf("error scanning tracks: %s", err)
1020		}
1021		return nil
1022	}
1023	var rcpts []string
1024	for _, f := range strings.Split(rawtracks, " ") {
1025		idx := strings.LastIndexByte(f, '#')
1026		if idx != -1 {
1027			f = f[:idx]
1028		}
1029		if !strings.HasPrefix(f, "https://") {
1030			f = fmt.Sprintf("%%https://%s/inbox", f)
1031		}
1032		rcpts = append(rcpts, f)
1033	}
1034	return rcpts
1035}
1036
1037func savetracks(tracks map[string][]string) {
1038	db := opendatabase()
1039	tx, err := db.Begin()
1040	if err != nil {
1041		elog.Printf("savetracks begin error: %s", err)
1042		return
1043	}
1044	defer func() {
1045		err := tx.Commit()
1046		if err != nil {
1047			elog.Printf("savetracks commit error: %s", err)
1048		}
1049
1050	}()
1051	stmtGetTracks, err := tx.Prepare("select fetches from tracks where xid = ?")
1052	if err != nil {
1053		elog.Printf("savetracks error: %s", err)
1054		return
1055	}
1056	stmtNewTracks, err := tx.Prepare("insert into tracks (xid, fetches) values (?, ?)")
1057	if err != nil {
1058		elog.Printf("savetracks error: %s", err)
1059		return
1060	}
1061	stmtUpdateTracks, err := tx.Prepare("update tracks set fetches = ? where xid = ?")
1062	if err != nil {
1063		elog.Printf("savetracks error: %s", err)
1064		return
1065	}
1066	count := 0
1067	for xid, f := range tracks {
1068		count += len(f)
1069		var prev string
1070		row := stmtGetTracks.QueryRow(xid)
1071		err := row.Scan(&prev)
1072		if err == sql.ErrNoRows {
1073			f = oneofakind(f)
1074			stmtNewTracks.Exec(xid, strings.Join(f, " "))
1075		} else if err == nil {
1076			all := append(strings.Split(prev, " "), f...)
1077			all = oneofakind(all)
1078			stmtUpdateTracks.Exec(strings.Join(all, " "))
1079		} else {
1080			elog.Printf("savetracks error: %s", err)
1081		}
1082	}
1083	dlog.Printf("saved %d new fetches", count)
1084}
1085
1086var trackchan = make(chan Track)
1087var dumptracks = make(chan chan bool)
1088
1089func tracker() {
1090	timeout := 4 * time.Minute
1091	sleeper := time.NewTimer(timeout)
1092	tracks := make(map[string][]string)
1093	workinprogress++
1094	for {
1095		select {
1096		case track := <-trackchan:
1097			tracks[track.xid] = append(tracks[track.xid], track.who)
1098		case <-sleeper.C:
1099			if len(tracks) > 0 {
1100				go savetracks(tracks)
1101				tracks = make(map[string][]string)
1102			}
1103			sleeper.Reset(timeout)
1104		case c := <-dumptracks:
1105			if len(tracks) > 0 {
1106				savetracks(tracks)
1107			}
1108			c <- true
1109		case <-endoftheworld:
1110			if len(tracks) > 0 {
1111				savetracks(tracks)
1112			}
1113			readyalready <- true
1114			return
1115		}
1116	}
1117}
1118
1119var re_keyholder = regexp.MustCompile(`keyId="([^"]+)"`)
1120
1121func requestActor(r *http.Request) string {
1122	if sig := r.Header.Get("Signature"); sig != "" {
1123		if m := re_keyholder.FindStringSubmatch(sig); len(m) == 2 {
1124			return m[1]
1125		}
1126	}
1127	return ""
1128}
1129
1130func trackback(xid string, r *http.Request) {
1131	who := requestActor(r)
1132	if who != "" {
1133		trackchan <- Track{xid: xid, who: who}
1134	}
1135}
1136
1137func sameperson(h1, h2 *Honk) bool {
1138	n1, n2 := h1.Honker, h2.Honker
1139	if h1.Oonker != "" {
1140		n1 = h1.Oonker
1141	}
1142	if h2.Oonker != "" {
1143		n2 = h2.Oonker
1144	}
1145	return n1 == n2
1146}
1147
1148func threadposes(honks []*Honk, wanted int64) ([]*Honk, []int) {
1149	var poses []int
1150	var newhonks []*Honk
1151	for i, honk := range honks {
1152		if honk.ID > wanted {
1153			newhonks = append(newhonks, honk)
1154			poses = append(poses, i)
1155		}
1156	}
1157	return newhonks, poses
1158}
1159
1160func threadsort(honks []*Honk) []*Honk {
1161	sort.Slice(honks, func(i, j int) bool {
1162		return honks[i].Date.Before(honks[j].Date)
1163	})
1164	honkx := make(map[string]*Honk)
1165	kids := make(map[string][]*Honk)
1166	for _, h := range honks {
1167		honkx[h.XID] = h
1168		rid := h.RID
1169		kids[rid] = append(kids[rid], h)
1170	}
1171	done := make(map[*Honk]bool)
1172	var thread []*Honk
1173	var nextlevel func(p *Honk)
1174	level := 0
1175	nextlevel = func(p *Honk) {
1176		levelup := level < 4
1177		if pp := honkx[p.RID]; p.RID == "" || (pp != nil && sameperson(p, pp)) {
1178			levelup = false
1179		}
1180		if level > 0 && len(kids[p.RID]) == 1 {
1181			if pp := honkx[p.RID]; pp != nil && len(kids[pp.RID]) == 1 {
1182				levelup = false
1183			}
1184		}
1185		if levelup {
1186			level++
1187		}
1188		p.Style += fmt.Sprintf(" level%d", level)
1189		childs := kids[p.XID]
1190		if false {
1191			sort.SliceStable(childs, func(i, j int) bool {
1192				return sameperson(childs[i], p) && !sameperson(childs[j], p)
1193			})
1194		}
1195		if true {
1196			sort.SliceStable(childs, func(i, j int) bool {
1197				return !sameperson(childs[i], p) && sameperson(childs[j], p)
1198			})
1199		}
1200		for _, h := range childs {
1201			if !done[h] {
1202				done[h] = true
1203				thread = append(thread, h)
1204				nextlevel(h)
1205			}
1206		}
1207		if levelup {
1208			level--
1209		}
1210	}
1211	for _, h := range honks {
1212		if !done[h] && h.RID == "" {
1213			done[h] = true
1214			thread = append(thread, h)
1215			nextlevel(h)
1216		}
1217	}
1218	for _, h := range honks {
1219		if !done[h] {
1220			done[h] = true
1221			thread = append(thread, h)
1222			nextlevel(h)
1223		}
1224	}
1225	return thread
1226}
1227
1228func oguser(user *WhatAbout) template.HTML {
1229	short := user.About
1230	if len(short) > 160 {
1231		short = short[0:160] + "..."
1232	}
1233	title := user.Display
1234	imgurl := avatarURL(user)
1235	return templates.Sprintf(
1236		`<meta property="og:title" content="%s" />
1237<meta property="og:type" content="website" />
1238<meta property="og:url" content="%s" />
1239<meta property="og:image" content="%s" />
1240<meta property="og:description" content="%s" />`,
1241		title, user.URL, imgurl, short)
1242}
1243
1244func honkology(honk *Honk) template.HTML {
1245	user, ok := somenumberedusers.Get(honk.UserID)
1246	if !ok {
1247		return ""
1248	}
1249	title := fmt.Sprintf("%s: %s", user.Display, honk.Precis)
1250	imgurl := avatarURL(user)
1251	for _, d := range honk.Donks {
1252		if d.Local && strings.HasPrefix(d.Media, "image") {
1253			imgurl = d.URL
1254			break
1255		}
1256	}
1257	short := honk.Noise
1258	if len(short) > 160 {
1259		short = short[0:160] + "..."
1260	}
1261	return templates.Sprintf(
1262		`<meta property="og:title" content="%s" />
1263<meta property="og:type" content="article" />
1264<meta property="article:author" content="%s" />
1265<meta property="og:url" content="%s" />
1266<meta property="og:image" content="%s" />
1267<meta property="og:description" content="%s" />`,
1268		title, user.URL, honk.XID, imgurl, short)
1269}
1270
1271func showonehonk(w http.ResponseWriter, r *http.Request) {
1272	name := mux.Vars(r)["name"]
1273	user, err := butwhatabout(name)
1274	if err != nil {
1275		http.NotFound(w, r)
1276		return
1277	}
1278	if stealthmode(user.ID, r) {
1279		http.NotFound(w, r)
1280		return
1281	}
1282	wantjson := false
1283	path := r.URL.Path
1284	if strings.HasSuffix(path, ".json") {
1285		path = path[:len(path)-5]
1286		wantjson = true
1287	}
1288	xid := serverURL("%s", path)
1289
1290	if friendorfoe(r.Header.Get("Accept")) || wantjson {
1291		j, ok := gimmejonk(xid)
1292		if ok {
1293			trackback(xid, r)
1294			w.Header().Set("Content-Type", theonetruename)
1295			w.Write(j)
1296		} else {
1297			http.NotFound(w, r)
1298		}
1299		return
1300	}
1301	honk := getxonk(user.ID, xid)
1302	if honk == nil {
1303		http.NotFound(w, r)
1304		return
1305	}
1306	u := login.GetUserInfo(r)
1307	if u != nil && UserID(u.UserID) != user.ID {
1308		u = nil
1309	}
1310	if !honk.Public {
1311		if u == nil {
1312			http.NotFound(w, r)
1313			return
1314
1315		}
1316		honks := []*Honk{honk}
1317		donksforhonks(honks)
1318		templinfo := getInfo(r)
1319		templinfo["ServerMessage"] = "one honk maybe more"
1320		templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
1321		honkpage(w, u, honks, templinfo)
1322		return
1323	}
1324
1325	templinfo := getInfo(r)
1326	rawhonks := gethonksbyconvoy(honk.UserID, honk.Convoy, 0)
1327	//reversehonks(rawhonks)
1328	rawhonks = threadsort(rawhonks)
1329	var honks []*Honk
1330	for i, h := range rawhonks {
1331		if h.XID == xid {
1332			templinfo["Honkology"] = honkology(h)
1333			if i > 0 {
1334				h.Style += " glow"
1335			}
1336		}
1337		if h.Public && (h.Whofore == 2 || h.IsAcked()) {
1338			honks = append(honks, h)
1339		}
1340	}
1341
1342	templinfo["ServerMessage"] = "one honk maybe more"
1343	if u != nil {
1344		templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
1345	}
1346	templinfo["APAltLink"] = templates.Sprintf("<link href='%s' rel='alternate' type='application/activity+json'>", xid)
1347	honkpage(w, u, honks, templinfo)
1348}
1349
1350func honkpage(w http.ResponseWriter, u *login.UserInfo, honks []*Honk, templinfo map[string]interface{}) {
1351	var userid UserID = -1
1352	if u != nil {
1353		userid = UserID(u.UserID)
1354		templinfo["User"], _ = butwhatabout(u.Username)
1355	}
1356	reverbolate(userid, honks)
1357	templinfo["Honks"] = honks
1358	templinfo["MapLink"] = getmaplink(u)
1359	if templinfo["TopHID"] == nil {
1360		if len(honks) > 0 {
1361			templinfo["TopHID"] = honks[0].ID
1362		} else {
1363			templinfo["TopHID"] = 0
1364		}
1365	}
1366	if u == nil && !develMode {
1367		w.Header().Set("Cache-Control", "max-age=60")
1368	}
1369	err := readviews.Execute(w, "honkpage.html", templinfo)
1370	if err != nil {
1371		elog.Print(err)
1372	}
1373}
1374
1375func saveuser(w http.ResponseWriter, r *http.Request) {
1376	whatabout := r.FormValue("whatabout")
1377	whatabout = strings.Replace(whatabout, "\r", "", -1)
1378	u := login.GetUserInfo(r)
1379	user, _ := butwhatabout(u.Username)
1380	db := opendatabase()
1381
1382	options := user.Options
1383	options.SkinnyCSS = r.FormValue("skinny") == "skinny"
1384	options.OmitImages = r.FormValue("omitimages") == "omitimages"
1385	options.MentionAll = r.FormValue("mentionall") == "mentionall"
1386	options.InlineQuotes = r.FormValue("inlineqts") == "inlineqts"
1387	options.MapLink = r.FormValue("maps")
1388	options.Reaction = r.FormValue("reaction")
1389
1390	sendupdate := false
1391	ava := re_avatar.FindString(whatabout)
1392	if ava != "" {
1393		whatabout = re_avatar.ReplaceAllString(whatabout, "")
1394		ava = ava[7:]
1395		if ava[0] == ' ' {
1396			ava = ava[1:]
1397		}
1398		ava = serverURL("/meme/%s", ava)
1399	}
1400	if ava != options.Avatar {
1401		options.Avatar = ava
1402		sendupdate = true
1403	}
1404	ban := re_banner.FindString(whatabout)
1405	if ban != "" {
1406		whatabout = re_banner.ReplaceAllString(whatabout, "")
1407		ban = ban[7:]
1408		if ban[0] == ' ' {
1409			ban = ban[1:]
1410		}
1411		ban = serverURL("/meme/%s", ban)
1412	}
1413	if ban != options.Banner {
1414		options.Banner = ban
1415		sendupdate = true
1416	}
1417	whatabout = strings.TrimSpace(whatabout)
1418	if whatabout != user.About {
1419		sendupdate = true
1420	}
1421	j, err := jsonify(options)
1422	if err == nil {
1423		_, err = db.Exec("update users set about = ?, options = ? where username = ?", whatabout, j, u.Username)
1424	}
1425	if err != nil {
1426		elog.Printf("error bouting what: %s", err)
1427	}
1428	somenamedusers.Clear(u.Username)
1429	somenumberedusers.Clear(user.ID)
1430	oldjonkers.Clear(u.Username)
1431
1432	if sendupdate {
1433		updateMe(u.Username)
1434	}
1435
1436	http.Redirect(w, r, "/account", http.StatusSeeOther)
1437}
1438
1439func bonkit(xid string, user *WhatAbout) {
1440	dlog.Printf("bonking %s", xid)
1441
1442	xonk := getxonk(user.ID, xid)
1443	if xonk == nil {
1444		return
1445	}
1446	if !xonk.Public {
1447		return
1448	}
1449	if xonk.IsBonked() {
1450		return
1451	}
1452	donksforhonks([]*Honk{xonk})
1453
1454	_, err := stmtUpdateFlags.Exec(flagIsBonked, xonk.ID)
1455	if err != nil {
1456		elog.Printf("error acking bonk: %s", err)
1457	}
1458
1459	oonker := xonk.Oonker
1460	if oonker == "" {
1461		oonker = xonk.Honker
1462	}
1463	dt := time.Now().UTC()
1464	bonk := &Honk{
1465		UserID:   user.ID,
1466		Username: user.Name,
1467		What:     "bonk",
1468		Honker:   user.URL,
1469		Oonker:   oonker,
1470		XID:      xonk.XID,
1471		RID:      xonk.RID,
1472		Noise:    xonk.Noise,
1473		Precis:   xonk.Precis,
1474		URL:      xonk.URL,
1475		Date:     dt,
1476		Donks:    xonk.Donks,
1477		Whofore:  2,
1478		Convoy:   xonk.Convoy,
1479		Audience: []string{thewholeworld, oonker},
1480		Public:   true,
1481		Format:   xonk.Format,
1482		Place:    xonk.Place,
1483		Onts:     xonk.Onts,
1484		Time:     xonk.Time,
1485	}
1486
1487	err = savehonk(bonk)
1488	if err != nil {
1489		elog.Printf("uh oh")
1490		return
1491	}
1492
1493	go honkworldwide(user, bonk)
1494}
1495
1496func submitbonk(w http.ResponseWriter, r *http.Request) {
1497	xid := r.FormValue("xid")
1498	userinfo := login.GetUserInfo(r)
1499	user, _ := butwhatabout(userinfo.Username)
1500
1501	bonkit(xid, user)
1502
1503	if r.FormValue("js") != "1" {
1504		templinfo := getInfo(r)
1505		templinfo["ServerMessage"] = "Bonked!"
1506		err := readviews.Execute(w, "msg.html", templinfo)
1507		if err != nil {
1508			elog.Print(err)
1509		}
1510	}
1511}
1512
1513func sendzonkofsorts(xonk *Honk, user *WhatAbout, what string, aux string) {
1514	zonk := &Honk{
1515		What:     what,
1516		XID:      xonk.XID,
1517		Date:     time.Now().UTC(),
1518		Audience: oneofakind(xonk.Audience),
1519		Noise:    aux,
1520	}
1521	zonk.Public = loudandproud(zonk.Audience)
1522
1523	dlog.Printf("announcing %sed honk: %s", what, xonk.XID)
1524	go honkworldwide(user, zonk)
1525}
1526
1527func zonkit(w http.ResponseWriter, r *http.Request) {
1528	wherefore := r.FormValue("wherefore")
1529	what := r.FormValue("what")
1530	u := login.GetUserInfo(r)
1531	user, _ := butwhatabout(u.Username)
1532
1533	if wherefore == "save" {
1534		xonk := getxonk(user.ID, what)
1535		if xonk != nil {
1536			_, err := stmtUpdateFlags.Exec(flagIsSaved, xonk.ID)
1537			if err != nil {
1538				elog.Printf("error saving: %s", err)
1539			}
1540		}
1541		return
1542	}
1543
1544	if wherefore == "unsave" {
1545		xonk := getxonk(user.ID, what)
1546		if xonk != nil {
1547			_, err := stmtClearFlags.Exec(flagIsSaved, xonk.ID)
1548			if err != nil {
1549				elog.Printf("error unsaving: %s", err)
1550			}
1551		}
1552		return
1553	}
1554
1555	if wherefore == "react" {
1556		reaction := user.Options.Reaction
1557		if r2 := r.FormValue("reaction"); r2 != "" {
1558			reaction = r2
1559		}
1560		if reaction == "none" {
1561			return
1562		}
1563		xonk := getxonk(user.ID, what)
1564		if xonk != nil {
1565			_, err := stmtUpdateFlags.Exec(flagIsReacted, xonk.ID)
1566			if err != nil {
1567				elog.Printf("error saving: %s", err)
1568			}
1569			sendzonkofsorts(xonk, user, "react", reaction)
1570		}
1571		return
1572	}
1573
1574	// my hammer is too big, oh well
1575	defer oldjonks.Flush()
1576
1577	if wherefore == "ack" {
1578		xonk := getxonk(user.ID, what)
1579		if xonk != nil && !xonk.IsAcked() {
1580			_, err := stmtUpdateFlags.Exec(flagIsAcked, xonk.ID)
1581			if err != nil {
1582				elog.Printf("error acking: %s", err)
1583			}
1584			sendzonkofsorts(xonk, user, "ack", "")
1585		}
1586		return
1587	}
1588
1589	if wherefore == "deack" {
1590		xonk := getxonk(user.ID, what)
1591		if xonk != nil && xonk.IsAcked() {
1592			_, err := stmtClearFlags.Exec(flagIsAcked, xonk.ID)
1593			if err != nil {
1594				elog.Printf("error deacking: %s", err)
1595			}
1596			sendzonkofsorts(xonk, user, "deack", "")
1597		}
1598		return
1599	}
1600
1601	if wherefore == "bonk" {
1602		bonkit(what, user)
1603		return
1604	}
1605
1606	if wherefore == "unbonk" {
1607		xonk := getbonk(user.ID, what)
1608		if xonk != nil {
1609			deletehonk(xonk.ID)
1610			xonk = getxonk(user.ID, what)
1611			_, err := stmtClearFlags.Exec(flagIsBonked, xonk.ID)
1612			if err != nil {
1613				elog.Printf("error unbonking: %s", err)
1614			}
1615			sendzonkofsorts(xonk, user, "unbonk", "")
1616		}
1617		return
1618	}
1619
1620	if wherefore == "untag" {
1621		xonk := getxonk(user.ID, what)
1622		if xonk != nil {
1623			_, err := stmtUpdateFlags.Exec(flagIsUntagged, xonk.ID)
1624			if err != nil {
1625				elog.Printf("error untagging: %s", err)
1626			}
1627		}
1628		var badparents map[string]bool
1629		untagged.GetAndLock(user.ID, &badparents)
1630		badparents[what] = true
1631		untagged.Unlock()
1632		return
1633	}
1634
1635	ilog.Printf("zonking %s %s", wherefore, what)
1636	if wherefore == "zonk" {
1637		xonk := getxonk(user.ID, what)
1638		if xonk != nil {
1639			deletehonk(xonk.ID)
1640			if xonk.Whofore == 2 || xonk.Whofore == 3 {
1641				sendzonkofsorts(xonk, user, "zonk", "")
1642			}
1643		}
1644	}
1645	_, err := stmtSaveZonker.Exec(user.ID, what, wherefore)
1646	if err != nil {
1647		elog.Printf("error saving zonker: %s", err)
1648		return
1649	}
1650}
1651
1652func edithonkpage(w http.ResponseWriter, r *http.Request) {
1653	u := login.GetUserInfo(r)
1654	user, _ := butwhatabout(u.Username)
1655	xid := r.FormValue("xid")
1656	honk := getxonk(user.ID, xid)
1657	if !canedithonk(user, honk) {
1658		http.Error(w, "no editing that please", http.StatusInternalServerError)
1659		return
1660	}
1661	noise := honk.Noise
1662	var savedfiles []string
1663
1664	honks := []*Honk{honk}
1665	donksforhonks(honks)
1666	for _, d := range honk.Donks {
1667		savedfiles = append(savedfiles, fmt.Sprintf("%s:%d", d.XID, d.FileID))
1668	}
1669	reverbolate(user.ID, honks)
1670
1671	templinfo := getInfo(r)
1672	templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
1673	templinfo["Honks"] = honks
1674	templinfo["MapLink"] = getmaplink(u)
1675	templinfo["Noise"] = noise
1676	templinfo["SavedPlace"] = honk.Place
1677	if tm := honk.Time; tm != nil {
1678		templinfo["ShowTime"] = " "
1679		templinfo["StartTime"] = tm.StartTime.Format("2006-01-02 15:04")
1680		if tm.Duration != 0 {
1681			templinfo["Duration"] = tm.Duration
1682		}
1683	}
1684	templinfo["Onties"] = honk.Onties
1685	templinfo["SeeAlso"] = honk.SeeAlso
1686	templinfo["Link"] = honk.Link
1687	templinfo["LegalName"] = honk.LegalName
1688	templinfo["ServerMessage"] = "honk edit"
1689	templinfo["IsPreview"] = true
1690	templinfo["UpdateXID"] = honk.XID
1691	if len(savedfiles) > 0 {
1692		templinfo["SavedFile"] = strings.Join(savedfiles, ",")
1693	}
1694	err := readviews.Execute(w, "honkpage.html", templinfo)
1695	if err != nil {
1696		elog.Print(err)
1697	}
1698}
1699
1700func newhonkpage(w http.ResponseWriter, r *http.Request) {
1701	u := login.GetUserInfo(r)
1702	rid := r.FormValue("rid")
1703	noise := ""
1704
1705	xonk := getxonk(UserID(u.UserID), rid)
1706	if xonk != nil {
1707		_, replto := handles(xonk.Honker)
1708		if replto != "" {
1709			noise = "@" + replto + " "
1710		}
1711	}
1712
1713	templinfo := getInfo(r)
1714	templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
1715	templinfo["InReplyTo"] = rid
1716	templinfo["Noise"] = noise
1717	templinfo["ServerMessage"] = "compose honk"
1718	templinfo["IsPreview"] = true
1719	err := readviews.Execute(w, "honkpage.html", templinfo)
1720	if err != nil {
1721		elog.Print(err)
1722	}
1723}
1724
1725func canedithonk(user *WhatAbout, honk *Honk) bool {
1726	if honk == nil || honk.Honker != user.URL || honk.What == "bonk" {
1727		return false
1728	}
1729	return true
1730}
1731
1732func submitdonk(w http.ResponseWriter, r *http.Request) ([]*Donk, error) {
1733	if !strings.HasPrefix(strings.ToLower(r.Header.Get("Content-Type")), "multipart/form-data") {
1734		return nil, nil
1735	}
1736	var donks []*Donk
1737	for i, hdr := range r.MultipartForm.File["donk"] {
1738		if i > 16 {
1739			break
1740		}
1741		donk, err := formtodonk(w, r, hdr)
1742		if err != nil {
1743			return nil, err
1744		}
1745		donks = append(donks, donk)
1746	}
1747	return donks, nil
1748}
1749
1750func formtodonk(w http.ResponseWriter, r *http.Request, filehdr *multipart.FileHeader) (*Donk, error) {
1751	file, err := filehdr.Open()
1752	if err != nil {
1753		if err == http.ErrMissingFile {
1754			return nil, nil
1755		}
1756		elog.Printf("error reading donk: %s", err)
1757		http.Error(w, "error reading donk", http.StatusUnsupportedMediaType)
1758		return nil, err
1759	}
1760	var buf bytes.Buffer
1761	io.Copy(&buf, file)
1762	file.Close()
1763	data := buf.Bytes()
1764	var media, name string
1765	img, err := bigshrink(data)
1766	if err == nil {
1767		data = img.Data
1768		format := img.Format
1769		media = "image/" + format
1770		if format == "jpeg" {
1771			format = "jpg"
1772		}
1773		if format == "svg+xml" {
1774			format = "svg"
1775		}
1776		name = xfiltrate() + "." + format
1777	} else {
1778		ct := http.DetectContentType(data)
1779		switch ct {
1780		case "application/pdf":
1781			maxsize := 10000000
1782			if len(data) > maxsize {
1783				ilog.Printf("bad image: %s too much pdf: %d", err, len(data))
1784				http.Error(w, "didn't like your attachment", http.StatusUnsupportedMediaType)
1785				return nil, err
1786			}
1787			media = ct
1788			name = filehdr.Filename
1789			if name == "" {
1790				name = xfiltrate() + ".pdf"
1791			}
1792		default:
1793			maxsize := 100000
1794			if len(data) > maxsize {
1795				ilog.Printf("bad image: %s too much text: %d", err, len(data))
1796				http.Error(w, "didn't like your attachment", http.StatusUnsupportedMediaType)
1797				return nil, err
1798			}
1799			for i := 0; i < len(data); i++ {
1800				if data[i] < 32 && data[i] != '\t' && data[i] != '\r' && data[i] != '\n' {
1801					ilog.Printf("bad image: %s not text: %d", err, data[i])
1802					http.Error(w, "didn't like your attachment", http.StatusUnsupportedMediaType)
1803					return nil, err
1804				}
1805			}
1806			media = "text/plain"
1807			name = filehdr.Filename
1808			if name == "" {
1809				name = xfiltrate() + ".txt"
1810			}
1811		}
1812	}
1813	desc := strings.TrimSpace(r.FormValue("donkdesc"))
1814	if desc == "" {
1815		desc = name
1816	}
1817	fileid, xid, err := savefileandxid(name, desc, "", media, true, data)
1818	if err != nil {
1819		elog.Printf("unable to save image: %s", err)
1820		http.Error(w, "failed to save attachment", http.StatusUnsupportedMediaType)
1821		return nil, err
1822	}
1823	d := &Donk{
1824		FileID: fileid,
1825		XID:    xid,
1826		Desc:   desc,
1827		Local:  true,
1828	}
1829	return d, nil
1830}
1831
1832func websubmithonk(w http.ResponseWriter, r *http.Request) {
1833	h := submithonk(w, r)
1834	if h == nil {
1835		return
1836	}
1837	redir := h.XID[len(serverURL("")):]
1838	http.Redirect(w, r, redir, http.StatusSeeOther)
1839}
1840
1841// what a hot mess this function is
1842func submithonk(w http.ResponseWriter, r *http.Request) *Honk {
1843	rid := r.FormValue("rid")
1844	noise := r.FormValue("noise")
1845	format := r.FormValue("format")
1846	if format == "" {
1847		format = "markdown"
1848	}
1849	if !(format == "markdown" || format == "html") {
1850		http.Error(w, "unknown format", 500)
1851		return nil
1852	}
1853
1854	u := login.GetUserInfo(r)
1855	user, _ := butwhatabout(u.Username)
1856
1857	dt := time.Now().UTC()
1858	updatexid := r.FormValue("updatexid")
1859	var honk *Honk
1860	if updatexid != "" {
1861		honk = getxonk(user.ID, updatexid)
1862		if !canedithonk(user, honk) {
1863			http.Error(w, "no editing that please", http.StatusInternalServerError)
1864			return nil
1865		}
1866		honk.Date = dt
1867		honk.What = "update"
1868		honk.Format = format
1869	} else {
1870		xid := fmt.Sprintf("%s/%s/%s", user.URL, honkSep, xfiltrate())
1871		what := "honk"
1872		honk = &Honk{
1873			UserID:   user.ID,
1874			Username: user.Name,
1875			What:     what,
1876			Honker:   user.URL,
1877			XID:      xid,
1878			Date:     dt,
1879			Format:   format,
1880		}
1881	}
1882	honk.SeeAlso = strings.TrimSpace(r.FormValue("seealso"))
1883	honk.Onties = strings.TrimSpace(r.FormValue("onties"))
1884	honk.Link = strings.TrimSpace(r.FormValue("link"))
1885	honk.LegalName = strings.TrimSpace(r.FormValue("legalname"))
1886
1887	var convoy string
1888	noise = strings.Replace(noise, "\r", "", -1)
1889	if updatexid == "" && rid == "" {
1890		noise = re_convoy.ReplaceAllStringFunc(noise, func(m string) string {
1891			convoy = m[7:]
1892			convoy = strings.TrimSpace(convoy)
1893			if !re_convalidate.MatchString(convoy) {
1894				convoy = ""
1895			}
1896			return ""
1897		})
1898	}
1899	noise = quickrename(noise, user.ID)
1900	honk.Noise = noise
1901	precipitate(honk)
1902	noise = honk.Noise
1903	translate(honk)
1904
1905	if rid != "" {
1906		xonk := getxonk(user.ID, rid)
1907		if xonk == nil {
1908			http.Error(w, "replyto disappeared", http.StatusNotFound)
1909			return nil
1910		}
1911		if xonk.Public {
1912			honk.Audience = append(honk.Audience, xonk.Audience...)
1913		}
1914		convoy = xonk.Convoy
1915		for i, a := range honk.Audience {
1916			if a == thewholeworld {
1917				honk.Audience[0], honk.Audience[i] = honk.Audience[i], honk.Audience[0]
1918				break
1919			}
1920		}
1921		honk.RID = rid
1922		if xonk.Precis != "" && honk.Precis == "" {
1923			honk.Precis = xonk.Precis
1924			if !re_dangerous.MatchString(honk.Precis) {
1925				honk.Precis = "re: " + honk.Precis
1926			}
1927		}
1928	} else if updatexid == "" {
1929		honk.Audience = []string{thewholeworld}
1930	}
1931	if noise != "" && noise[0] == '@' {
1932		honk.Audience = append(grapevine(honk.Mentions), honk.Audience...)
1933	} else {
1934		honk.Audience = append(honk.Audience, grapevine(honk.Mentions)...)
1935	}
1936	honk.Convoy = convoy
1937
1938	if honk.Convoy == "" {
1939		honk.Convoy = "data:,electrichonkytonk-" + xfiltrate()
1940	}
1941	butnottooloud(honk.Audience)
1942	honk.Audience = oneofakind(honk.Audience)
1943	if len(honk.Audience) == 0 {
1944		ilog.Printf("honk to nowhere")
1945		http.Error(w, "honk to nowhere...", http.StatusNotFound)
1946		return nil
1947	}
1948	honk.Public = loudandproud(honk.Audience)
1949
1950	donkxid := strings.Join(r.Form["donkxid"], ",")
1951	if donkxid == "" {
1952		donks, err := submitdonk(w, r)
1953		if err != nil && err != http.ErrMissingFile {
1954			return nil
1955		}
1956		if len(donks) > 0 {
1957			honk.Donks = append(honk.Donks, donks...)
1958			var xids []string
1959			for _, d := range honk.Donks {
1960				xids = append(xids, fmt.Sprintf("%s:%d", d.XID, d.FileID))
1961			}
1962			donkxid = strings.Join(xids, ",")
1963		}
1964	} else {
1965		xids := strings.Split(donkxid, ",")
1966		for i, xid := range xids {
1967			if i > 16 {
1968				break
1969			}
1970			p := strings.Split(xid, ":")
1971			xid = p[0]
1972			url := serverURL("/d/%s", xid)
1973			var donk *Donk
1974			if len(p) > 1 {
1975				fileid, _ := strconv.ParseInt(p[1], 10, 0)
1976				donk = finddonkid(fileid, url)
1977			} else {
1978				donk = finddonk(url)
1979			}
1980			if donk != nil {
1981				honk.Donks = append(honk.Donks, donk)
1982			} else {
1983				ilog.Printf("can't find file: %s", xid)
1984			}
1985		}
1986	}
1987	memetize(honk)
1988	imaginate(honk)
1989
1990	placename := strings.TrimSpace(r.FormValue("placename"))
1991	placelat := strings.TrimSpace(r.FormValue("placelat"))
1992	placelong := strings.TrimSpace(r.FormValue("placelong"))
1993	placeurl := strings.TrimSpace(r.FormValue("placeurl"))
1994	if placename != "" || placelat != "" || placelong != "" || placeurl != "" {
1995		p := new(Place)
1996		p.Name = placename
1997		p.Latitude, _ = strconv.ParseFloat(placelat, 64)
1998		p.Longitude, _ = strconv.ParseFloat(placelong, 64)
1999		p.Url = placeurl
2000		honk.Place = p
2001	}
2002	timestart := strings.TrimSpace(r.FormValue("timestart"))
2003	if timestart != "" {
2004		t := new(Time)
2005		now := time.Now().Local()
2006		for _, layout := range []string{"2006-01-02 3:04pm", "2006-01-02 15:04", "3:04pm", "15:04"} {
2007			start, err := time.ParseInLocation(layout, timestart, now.Location())
2008			if err == nil {
2009				if start.Year() == 0 {
2010					start = time.Date(now.Year(), now.Month(), now.Day(), start.Hour(), start.Minute(), 0, 0, now.Location())
2011				}
2012				t.StartTime = start
2013				break
2014			}
2015		}
2016		timeend := r.FormValue("timeend")
2017		dur := parseDuration(timeend)
2018		if dur != 0 {
2019			t.Duration = Duration(dur)
2020		}
2021		if !t.StartTime.IsZero() {
2022			honk.What = "event"
2023			honk.Time = t
2024		}
2025	}
2026
2027	if honk.Public {
2028		honk.Whofore = 2
2029	} else {
2030		honk.Whofore = 3
2031	}
2032
2033	// back to markdown
2034	honk.Noise = noise
2035
2036	if r.FormValue("preview") == "preview" {
2037		honks := []*Honk{honk}
2038		reverbolate(user.ID, honks)
2039		templinfo := getInfo(r)
2040		templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
2041		templinfo["Honks"] = honks
2042		templinfo["MapLink"] = getmaplink(u)
2043		templinfo["InReplyTo"] = r.FormValue("rid")
2044		templinfo["Noise"] = r.FormValue("noise")
2045		templinfo["Onties"] = honk.Onties
2046		templinfo["SeeAlso"] = honk.SeeAlso
2047		templinfo["Link"] = honk.Link
2048		templinfo["LegalName"] = honk.LegalName
2049		templinfo["SavedFile"] = donkxid
2050		if tm := honk.Time; tm != nil {
2051			templinfo["ShowTime"] = " "
2052			templinfo["StartTime"] = tm.StartTime.Format("2006-01-02 15:04")
2053			if tm.Duration != 0 {
2054				templinfo["Duration"] = tm.Duration
2055			}
2056		}
2057		templinfo["IsPreview"] = true
2058		templinfo["UpdateXID"] = updatexid
2059		templinfo["ServerMessage"] = "honk preview"
2060		err := readviews.Execute(w, "honkpage.html", templinfo)
2061		if err != nil {
2062			elog.Print(err)
2063		}
2064		return nil
2065	}
2066
2067	if updatexid != "" {
2068		updatehonk(honk)
2069		oldjonks.Clear(honk.XID)
2070	} else {
2071		err := savehonk(honk)
2072		if err != nil {
2073			elog.Printf("uh oh")
2074			return nil
2075		}
2076	}
2077
2078	// reload for consistency
2079	honk.Donks = nil
2080	donksforhonks([]*Honk{honk})
2081
2082	go honkworldwide(user, honk)
2083
2084	return honk
2085}
2086
2087func firstRune(s string) rune { r, _ := utf8.DecodeRuneInString(s); return r }
2088
2089func showhonkers(w http.ResponseWriter, r *http.Request) {
2090	userid := UserID(login.GetUserInfo(r).UserID)
2091	honkers := gethonkers(userid)
2092	var letters []string
2093	var lastrune rune = -1
2094	for _, h := range honkers {
2095		if r := firstRune(h.Name); r != lastrune {
2096			letters = append(letters, string(r))
2097			lastrune = r
2098		}
2099	}
2100	templinfo := getInfo(r)
2101	templinfo["FirstRune"] = firstRune
2102	templinfo["Letters"] = letters
2103	templinfo["Honkers"] = honkers
2104	templinfo["HonkerCSRF"] = login.GetCSRF("submithonker", r)
2105	err := readviews.Execute(w, "honkers.html", templinfo)
2106	if err != nil {
2107		elog.Print(err)
2108	}
2109}
2110
2111func showchatter(w http.ResponseWriter, r *http.Request) {
2112	u := login.GetUserInfo(r)
2113	chatnewnone(UserID(u.UserID))
2114	chatter := loadchatter(UserID(u.UserID))
2115	for _, chat := range chatter {
2116		for _, ch := range chat.Chonks {
2117			filterchonk(ch)
2118		}
2119	}
2120
2121	templinfo := getInfo(r)
2122	templinfo["Chatter"] = chatter
2123	templinfo["ChonkCSRF"] = login.GetCSRF("sendchonk", r)
2124	err := readviews.Execute(w, "chatter.html", templinfo)
2125	if err != nil {
2126		elog.Print(err)
2127	}
2128}
2129
2130func submitchonk(w http.ResponseWriter, r *http.Request) {
2131	u := login.GetUserInfo(r)
2132	user, _ := butwhatabout(u.Username)
2133	noise := r.FormValue("noise")
2134	target := r.FormValue("target")
2135	format := "markdown"
2136	dt := time.Now().UTC()
2137	xid := fmt.Sprintf("%s/%s/%s", user.URL, "chonk", xfiltrate())
2138
2139	if !strings.HasPrefix(target, "https://") {
2140		target = fullname(target, user.ID)
2141	}
2142	if target == "" {
2143		http.Error(w, "who is that?", http.StatusInternalServerError)
2144		return
2145	}
2146	ch := Chonk{
2147		UserID: user.ID,
2148		XID:    xid,
2149		Who:    user.URL,
2150		Target: target,
2151		Date:   dt,
2152		Noise:  noise,
2153		Format: format,
2154	}
2155	donks, err := submitdonk(w, r)
2156	if err != nil && err != http.ErrMissingFile {
2157		return
2158	}
2159	if len(donks) > 0 {
2160		ch.Donks = append(ch.Donks, donks...)
2161	}
2162
2163	translatechonk(&ch)
2164	savechonk(&ch)
2165	// reload for consistency
2166	ch.Donks = nil
2167	donksforchonks([]*Chonk{&ch})
2168	go sendchonk(user, &ch)
2169
2170	http.Redirect(w, r, "/chatter", http.StatusSeeOther)
2171}
2172
2173var combocache = gencache.New(gencache.Options[UserID, []string]{Fill: func(userid UserID) ([]string, bool) {
2174	honkers := gethonkers(userid)
2175	var combos []string
2176	for _, h := range honkers {
2177		combos = append(combos, h.Combos...)
2178	}
2179	for i, c := range combos {
2180		if c == "-" {
2181			combos[i] = ""
2182		}
2183	}
2184	combos = oneofakind(combos)
2185	sort.Strings(combos)
2186	return combos, true
2187}, Invalidator: &honkerinvalidator})
2188
2189func showcombos(w http.ResponseWriter, r *http.Request) {
2190	templinfo := getInfo(r)
2191	err := readviews.Execute(w, "combos.html", templinfo)
2192	if err != nil {
2193		elog.Print(err)
2194	}
2195}
2196
2197func websubmithonker(w http.ResponseWriter, r *http.Request) {
2198	h := submithonker(w, r)
2199	if h == nil {
2200		return
2201	}
2202	http.Redirect(w, r, "/honkers", http.StatusSeeOther)
2203}
2204
2205func submithonker(w http.ResponseWriter, r *http.Request) *Honker {
2206	u := login.GetUserInfo(r)
2207	user, _ := butwhatabout(u.Username)
2208	name := strings.TrimSpace(r.FormValue("name"))
2209	url := strings.TrimSpace(r.FormValue("url"))
2210	peep := r.FormValue("peep")
2211	combos := strings.TrimSpace(r.FormValue("combos"))
2212	combos = " " + combos + " "
2213	honkerid, _ := strconv.ParseInt(r.FormValue("honkerid"), 10, 0)
2214
2215	re_namecheck := regexp.MustCompile("^[\\pL[:digit:]_.-]+$")
2216	if name != "" && !re_namecheck.MatchString(name) {
2217		http.Error(w, "please use a plainer name", http.StatusInternalServerError)
2218		return nil
2219	}
2220
2221	var meta HonkerMeta
2222	meta.Notes = strings.TrimSpace(r.FormValue("notes"))
2223	mj, _ := jsonify(&meta)
2224
2225	defer honkerinvalidator.Clear(user.ID)
2226
2227	// mostly dummy, fill in later...
2228	h := &Honker{
2229		ID: honkerid,
2230	}
2231
2232	if honkerid > 0 {
2233		if r.FormValue("delete") == "delete" {
2234			unfollowyou(user, honkerid, false)
2235			stmtDeleteHonker.Exec(honkerid)
2236			return h
2237		}
2238		if r.FormValue("unsub") == "unsub" {
2239			unfollowyou(user, honkerid, false)
2240		}
2241		if r.FormValue("sub") == "sub" {
2242			followyou(user, honkerid, false)
2243		}
2244		_, err := stmtUpdateHonker.Exec(name, combos, mj, honkerid, user.ID)
2245		if err != nil {
2246			elog.Printf("update honker err: %s", err)
2247			return nil
2248		}
2249		return h
2250	}
2251
2252	if url == "" {
2253		http.Error(w, "subscribing to nothing?", http.StatusInternalServerError)
2254		return nil
2255	}
2256
2257	flavor := "presub"
2258	if peep == "peep" {
2259		flavor = "peep"
2260	}
2261
2262	var err error
2263	honkerid, flavor, err = savehonker(user, url, name, flavor, combos, mj)
2264	if err != nil {
2265		http.Error(w, "had some trouble with that: "+err.Error(), http.StatusInternalServerError)
2266		return nil
2267	}
2268	if flavor == "presub" {
2269		followyou(user, honkerid, false)
2270	}
2271	h.ID = honkerid
2272	return h
2273}
2274
2275func hfcspage(w http.ResponseWriter, r *http.Request) {
2276	u := login.GetUserInfo(r)
2277
2278	filters := getfilters(UserID(u.UserID), filtAny)
2279
2280	templinfo := getInfo(r)
2281	templinfo["Filters"] = filters
2282	templinfo["FilterCSRF"] = login.GetCSRF("filter", r)
2283	err := readviews.Execute(w, "hfcs.html", templinfo)
2284	if err != nil {
2285		elog.Print(err)
2286	}
2287}
2288
2289func accountpage(w http.ResponseWriter, r *http.Request) {
2290	u := login.GetUserInfo(r)
2291	user, _ := butwhatabout(u.Username)
2292	templinfo := getInfo(r)
2293	templinfo["UserCSRF"] = login.GetCSRF("saveuser", r)
2294	templinfo["LogoutCSRF"] = login.GetCSRF("logout", r)
2295	templinfo["User"] = user
2296	about := user.About
2297	if ava := user.Options.Avatar; ava != "" {
2298		about += "\n\navatar: " + ava[strings.LastIndexByte(ava, '/')+1:]
2299	}
2300	if ban := user.Options.Banner; ban != "" {
2301		about += "\n\nbanner: " + ban[strings.LastIndexByte(ban, '/')+1:]
2302	}
2303	templinfo["WhatAbout"] = about
2304	err := readviews.Execute(w, "account.html", templinfo)
2305	if err != nil {
2306		elog.Print(err)
2307	}
2308}
2309
2310func dochpass(w http.ResponseWriter, r *http.Request) {
2311	err := login.ChangePassword(w, r)
2312	if err != nil {
2313		elog.Printf("error changing password: %s", err)
2314	}
2315	http.Redirect(w, r, "/account", http.StatusSeeOther)
2316}
2317
2318var oldfingers = gencache.New(gencache.Options[string, []byte]{Fill: func(orig string) ([]byte, bool) {
2319	if strings.HasPrefix(orig, "acct:") {
2320		orig = orig[5:]
2321	}
2322	name := orig
2323	idx := strings.LastIndexByte(name, '/')
2324	if idx != -1 {
2325		name = name[idx+1:]
2326		if serverURL("/%s/%s", userSep, name) != orig {
2327			ilog.Printf("foreign request rejected")
2328			name = ""
2329		}
2330	} else {
2331		idx = strings.IndexByte(name, '@')
2332		if idx != -1 {
2333			name = name[:idx]
2334			if !(name+"@"+serverName == orig || name+"@"+masqName == orig) {
2335				ilog.Printf("foreign request rejected")
2336				name = ""
2337			}
2338		}
2339	}
2340	user, err := butwhatabout(name)
2341	if err != nil {
2342		return nil, false
2343	}
2344
2345	j := junk.New()
2346	j["subject"] = fmt.Sprintf("acct:%s@%s", user.Name, masqName)
2347	j["aliases"] = []string{user.URL}
2348	l := junk.New()
2349	l["rel"] = "self"
2350	l["type"] = `application/activity+json`
2351	l["href"] = user.URL
2352	j["links"] = []junk.Junk{l}
2353	return j.ToBytes(), true
2354}})
2355
2356func fingerlicker(w http.ResponseWriter, r *http.Request) {
2357	orig := r.FormValue("resource")
2358
2359	dlog.Printf("finger lick: %s", orig)
2360
2361	j, ok := oldfingers.Get(orig)
2362	if ok {
2363		w.Header().Set("Content-Type", "application/jrd+json")
2364		w.Write(j)
2365	} else {
2366		http.NotFound(w, r)
2367	}
2368}
2369
2370func somedays() string {
2371	secs := 432000 + notrand.Int63n(432000)
2372	return fmt.Sprintf("%d", secs)
2373}
2374
2375func lookatme(ava string) string {
2376	if strings.Contains(ava, serverName+"/"+userSep) {
2377		idx := strings.LastIndexByte(ava, '/')
2378		if idx < len(ava) {
2379			name := ava[idx+1:]
2380			user, _ := butwhatabout(name)
2381			if user != nil && user.URL == ava {
2382				return user.Options.Avatar
2383			}
2384		}
2385	}
2386	return ""
2387}
2388
2389func avatate(w http.ResponseWriter, r *http.Request) {
2390	if develMode {
2391		loadAvatarColors()
2392	}
2393	n := r.FormValue("a")
2394	if redir := lookatme(n); redir != "" {
2395		http.Redirect(w, r, redir, http.StatusSeeOther)
2396		return
2397	}
2398	a := genAvatar(n)
2399	if !develMode {
2400		w.Header().Set("Cache-Control", "max-age="+somedays())
2401	}
2402	w.Write(a)
2403}
2404
2405func serveviewasset(w http.ResponseWriter, r *http.Request) {
2406	serveasset(w, r, viewDir)
2407}
2408func servedataasset(w http.ResponseWriter, r *http.Request) {
2409	if r.URL.Path == "/favicon.ico" {
2410		r.URL.Path = "/icon.png"
2411	}
2412	serveasset(w, r, dataDir)
2413}
2414
2415func serveasset(w http.ResponseWriter, r *http.Request, basedir string) {
2416	if !develMode {
2417		w.Header().Set("Cache-Control", "max-age=7776000")
2418	}
2419	http.ServeFile(w, r, basedir+"/views"+r.URL.Path)
2420}
2421func servehelp(w http.ResponseWriter, r *http.Request) {
2422	name := mux.Vars(r)["name"]
2423	if !develMode {
2424		w.Header().Set("Cache-Control", "max-age=3600")
2425	}
2426	http.ServeFile(w, r, viewDir+"/docs/"+name)
2427}
2428func servehtml(w http.ResponseWriter, r *http.Request) {
2429	u := login.GetUserInfo(r)
2430	templinfo := getInfo(r)
2431	templinfo["AboutMsg"] = aboutMsg
2432	templinfo["LoginMsg"] = loginMsg
2433	templinfo["HonkVersion"] = softwareVersion
2434	if r.URL.Path == "/about" {
2435		templinfo["Sensors"] = getSensors()
2436	}
2437	if u == nil && !develMode {
2438		w.Header().Set("Cache-Control", "max-age=60")
2439	}
2440	err := readviews.Execute(w, r.URL.Path[1:]+".html", templinfo)
2441	if err != nil {
2442		elog.Print(err)
2443	}
2444}
2445func serveemu(w http.ResponseWriter, r *http.Request) {
2446	emu := mux.Vars(r)["emu"]
2447
2448	w.Header().Set("Cache-Control", "max-age="+somedays())
2449	http.ServeFile(w, r, dataDir+"/emus/"+emu)
2450}
2451func servememe(w http.ResponseWriter, r *http.Request) {
2452	meme := mux.Vars(r)["meme"]
2453
2454	w.Header().Set("Cache-Control", "max-age="+somedays())
2455	_, err := os.Stat(dataDir + "/memes/" + meme)
2456	if err == nil {
2457		http.ServeFile(w, r, dataDir+"/memes/"+meme)
2458	} else {
2459		mux.Vars(r)["xid"] = meme
2460		servefile(w, r)
2461	}
2462}
2463
2464func servefile(w http.ResponseWriter, r *http.Request) {
2465	if friendorfoe(r.Header.Get("Accept")) {
2466		dlog.Printf("incompatible accept for donk")
2467		http.Error(w, "there are no activities here", http.StatusNotAcceptable)
2468		return
2469	}
2470	xid := mux.Vars(r)["xid"]
2471	preview := r.FormValue("preview") == "1"
2472	var media string
2473	var data []byte
2474	row := stmtGetFileData.QueryRow(xid)
2475	err := row.Scan(&media, &data)
2476	if err != nil {
2477		elog.Printf("error loading file: %s", err)
2478		http.NotFound(w, r)
2479		return
2480	}
2481	if preview && strings.HasPrefix(media, "image") {
2482		img, err := lilshrink(data)
2483		if err == nil {
2484			data = img.Data
2485		}
2486	}
2487	w.Header().Set("Content-Type", media)
2488	w.Header().Set("X-Content-Type-Options", "nosniff")
2489	w.Header().Set("Cache-Control", "max-age="+somedays())
2490	w.Write(data)
2491}
2492
2493func nomoroboto(w http.ResponseWriter, r *http.Request) {
2494	io.WriteString(w, "User-agent: *\n")
2495	io.WriteString(w, "Disallow: /a\n")
2496	io.WriteString(w, "Disallow: /d/\n")
2497	io.WriteString(w, "Disallow: /meme/\n")
2498	io.WriteString(w, "Disallow: /o\n")
2499	io.WriteString(w, "Disallow: /o/\n")
2500	io.WriteString(w, "Disallow: /help/\n")
2501	for _, u := range allusers() {
2502		fmt.Fprintf(w, "Disallow: /%s/%s/%s/\n", userSep, u.Username, honkSep)
2503	}
2504}
2505
2506type Hydration struct {
2507	Tophid    int64
2508	Srvmsg    template.HTML
2509	Honks     string
2510	MeCount   int64
2511	ChatCount int64
2512	Poses     []int
2513}
2514
2515func webhydra(w http.ResponseWriter, r *http.Request) {
2516	u := login.GetUserInfo(r)
2517	userid := UserID(u.UserID)
2518	templinfo := getInfo(r)
2519	templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
2520	page := r.FormValue("page")
2521
2522	wanted, _ := strconv.ParseInt(r.FormValue("tophid"), 10, 0)
2523
2524	var hydra Hydration
2525
2526	var honks []*Honk
2527	switch page {
2528	case "atme":
2529		honks = gethonksforme(userid, wanted)
2530		honks = osmosis(honks, userid, false)
2531		menewnone(userid)
2532		hydra.Srvmsg = "at me!"
2533	case "longago":
2534		honks = gethonksfromlongago(userid, wanted)
2535		honks = osmosis(honks, userid, false)
2536		hydra.Srvmsg = "from long ago"
2537	case "home":
2538		honks = gethonksforuser(userid, wanted)
2539		honks = osmosis(honks, userid, true)
2540		hydra.Srvmsg = serverMsg
2541	case "first":
2542		honks = gethonksforuserfirstclass(userid, wanted)
2543		honks = osmosis(honks, userid, true)
2544		hydra.Srvmsg = "first class only"
2545	case "saved":
2546		honks = getsavedhonks(userid, wanted)
2547		templinfo["PageName"] = "saved"
2548		hydra.Srvmsg = "saved honks"
2549	case "combo":
2550		c := r.FormValue("c")
2551		honks = gethonksbycombo(userid, c, wanted)
2552		honks = osmosis(honks, userid, false)
2553		hydra.Srvmsg = templates.Sprintf("honks by combo: %s", c)
2554	case "convoy":
2555		c := r.FormValue("c")
2556		honks = gethonksbyconvoy(userid, c, 0)
2557		honks = osmosis(honks, userid, false)
2558		honks = threadsort(honks)
2559		honks, hydra.Poses = threadposes(honks, wanted)
2560		hydra.Srvmsg = templates.Sprintf("honks in convoy: %s", c)
2561	case "honker":
2562		xid := r.FormValue("xid")
2563		honks = gethonksbyxonker(userid, xid, wanted)
2564		miniform := templates.Sprintf(`<form action="/submithonker" method="POST">
2565			<input type="hidden" name="CSRF" value="%s">
2566			<input type="hidden" name="url" value="%s">
2567			<button tabindex=1 name="add honker" value="add honker">add honker</button>
2568			</form>`, login.GetCSRF("submithonker", r), xid)
2569		msg := templates.Sprintf(`honks by honker: <a href="%s" ref="noreferrer">%s</a>%s`, xid, xid, miniform)
2570		hydra.Srvmsg = msg
2571	case "user":
2572		uname := r.FormValue("uname")
2573		honks = gethonksbyuser(uname, u != nil && u.Username == uname, wanted)
2574		hydra.Srvmsg = templates.Sprintf("honks by user: %s", uname)
2575	default:
2576		http.NotFound(w, r)
2577	}
2578
2579	if len(honks) > 0 {
2580		if page == "convoy" {
2581			hydra.Tophid = honks[len(honks)-1].ID
2582		} else {
2583			hydra.Tophid = honks[0].ID
2584		}
2585	} else {
2586		hydra.Tophid = wanted
2587	}
2588	reverbolate(userid, honks)
2589
2590	user, _ := butwhatabout(u.Username)
2591
2592	var buf strings.Builder
2593	templinfo["Honks"] = honks
2594	templinfo["MapLink"] = getmaplink(u)
2595	templinfo["User"], _ = butwhatabout(u.Username)
2596	err := readviews.Execute(&buf, "honkfrags.html", templinfo)
2597	if err != nil {
2598		elog.Printf("frag error: %s", err)
2599		return
2600	}
2601	hydra.Honks = buf.String()
2602	hydra.MeCount = user.Options.MeCount
2603	hydra.ChatCount = user.Options.ChatCount
2604	w.Header().Set("Content-Type", "application/json")
2605	j, _ := jsonify(&hydra)
2606	io.WriteString(w, j)
2607}
2608
2609var honkline = make(chan bool)
2610
2611func honkhonkline() {
2612	for {
2613		select {
2614		case honkline <- true:
2615		default:
2616			return
2617		}
2618	}
2619}
2620
2621func apihandler(w http.ResponseWriter, r *http.Request) {
2622	u := login.GetUserInfo(r)
2623	userid := UserID(u.UserID)
2624	action := r.FormValue("action")
2625	wait, _ := strconv.ParseInt(r.FormValue("wait"), 10, 0)
2626	dlog.Printf("api request '%s' on behalf of %s", action, u.Username)
2627	switch action {
2628	case "honk":
2629		h := submithonk(w, r)
2630		if h == nil {
2631			return
2632		}
2633		fmt.Fprintf(w, "%s", h.XID)
2634	case "donk":
2635		donks, err := submitdonk(w, r)
2636		if err != nil {
2637			http.Error(w, err.Error(), http.StatusBadRequest)
2638			return
2639		}
2640		if len(donks) == 0 {
2641			http.Error(w, "missing donk", http.StatusBadRequest)
2642			return
2643		}
2644		d := donks[0]
2645		donkxid := fmt.Sprintf("%s:%d", d.XID, d.FileID)
2646		w.Write([]byte(donkxid))
2647	case "zonkit":
2648		zonkit(w, r)
2649	case "gethonks":
2650		var honks []*Honk
2651		wanted, _ := strconv.ParseInt(r.FormValue("after"), 10, 0)
2652		page := r.FormValue("page")
2653		var waitchan <-chan time.Time
2654	requery:
2655		switch page {
2656		case "atme":
2657			honks = gethonksforme(userid, wanted)
2658			honks = osmosis(honks, userid, false)
2659			menewnone(userid)
2660		case "longago":
2661			honks = gethonksfromlongago(userid, wanted)
2662			honks = osmosis(honks, userid, false)
2663		case "home":
2664			honks = gethonksforuser(userid, wanted)
2665			honks = osmosis(honks, userid, true)
2666		case "myhonks":
2667			honks = gethonksbyuser(u.Username, true, wanted)
2668			honks = osmosis(honks, userid, true)
2669		case "saved":
2670			honks = getsavedhonks(userid, wanted)
2671		case "combo":
2672			c := r.FormValue("c")
2673			honks = gethonksbycombo(userid, c, wanted)
2674			honks = osmosis(honks, userid, false)
2675		case "convoy":
2676			c := r.FormValue("c")
2677			honks = gethonksbyconvoy(userid, c, 0)
2678			honks = osmosis(honks, userid, false)
2679			honks = threadsort(honks)
2680			honks, _ = threadposes(honks, wanted)
2681		case "honker":
2682			xid := r.FormValue("xid")
2683			honks = gethonksbyxonker(userid, xid, wanted)
2684		case "search":
2685			q := r.FormValue("q")
2686			honks = gethonksbysearch(userid, q, wanted)
2687		default:
2688			http.Error(w, "unknown page", http.StatusNotFound)
2689			return
2690		}
2691		if len(honks) == 0 && wait > 0 {
2692			if waitchan == nil {
2693				waitchan = time.After(time.Duration(wait) * time.Second)
2694			}
2695			select {
2696			case <-honkline:
2697				goto requery
2698			case <-waitchan:
2699			}
2700		}
2701		reverbolate(userid, honks)
2702		user, _ := butwhatabout(u.Username)
2703		j := junk.New()
2704		j["honks"] = honks
2705		j["mecount"] = user.Options.MeCount
2706		j["chatcount"] = user.Options.ChatCount
2707		j.Write(w)
2708	case "sendactivity":
2709		public := r.FormValue("public") == "1"
2710		user, _ := butwhatabout(u.Username)
2711		rcpts := boxuprcpts(user, r.Form["rcpt"], public)
2712		msg := []byte(r.FormValue("msg"))
2713		for rcpt := range rcpts {
2714			go deliverate(userid, rcpt, msg)
2715		}
2716	case "gethonkers":
2717		j := junk.New()
2718		j["honkers"] = gethonkers(userid)
2719		j.Write(w)
2720	case "savehonker":
2721		h := submithonker(w, r)
2722		if h == nil {
2723			return
2724		}
2725		fmt.Fprintf(w, "%d", h.ID)
2726	default:
2727		http.Error(w, "unknown action", http.StatusNotFound)
2728		return
2729	}
2730}
2731
2732func fiveoh(w http.ResponseWriter, r *http.Request) {
2733	if !develMode {
2734		return
2735	}
2736	fd, err := os.OpenFile("violations.json", os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
2737	if err != nil {
2738		elog.Printf("error opening violations! %s", err)
2739		return
2740	}
2741	defer fd.Close()
2742	io.Copy(fd, r.Body)
2743	fd.WriteString("\n")
2744}
2745
2746var endoftheworld = make(chan bool)
2747var readyalready = make(chan bool)
2748var workinprogress = 0
2749var requestWG sync.WaitGroup
2750var listenSocket net.Listener
2751
2752func enditall() {
2753	sig := make(chan os.Signal, 1)
2754	signal.Notify(sig, syscall.SIGINT, syscall.SIGTERM, syscall.SIGQUIT)
2755	<-sig
2756	ilog.Printf("stopping...")
2757	listenSocket.Close()
2758	for i := 0; i < workinprogress; i++ {
2759		endoftheworld <- true
2760	}
2761	if *cpuprofile != "" {
2762		pprof.StopCPUProfile()
2763	}
2764	if *memprofile != "" {
2765		pprof.WriteHeapProfile(memprofilefd)
2766		memprofilefd.Close()
2767	}
2768	ilog.Printf("waiting...")
2769	go func() {
2770		time.Sleep(10 * time.Second)
2771		elog.Printf("timed out waiting for requests to finish")
2772		os.Exit(0)
2773	}()
2774	for i := 0; i < workinprogress; i++ {
2775		<-readyalready
2776	}
2777	requestWG.Wait()
2778	ilog.Printf("apocalypse")
2779	closedatabases()
2780	os.Exit(0)
2781}
2782
2783func bgmonitor() {
2784	for {
2785		when := time.Now().Add(-3 * 24 * time.Hour).UTC().Format(dbtimeformat)
2786		_, err := stmtDeleteOldXonkers.Exec("pubkey", when)
2787		if err != nil {
2788			elog.Printf("error deleting old xonkers: %s", err)
2789		}
2790		zaggies.Flush()
2791		time.Sleep(50 * time.Minute)
2792	}
2793}
2794
2795func addcspheaders(next http.Handler) http.Handler {
2796	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
2797		requestWG.Add(1)
2798		defer requestWG.Done()
2799		policy := "default-src 'none'; script-src 'self'; connect-src 'self'; style-src 'self'; img-src 'self'; media-src 'self'"
2800		if develMode {
2801			policy += "; report-uri /csp-violation"
2802		}
2803		w.Header().Set("Content-Security-Policy", policy)
2804		next.ServeHTTP(w, r)
2805	})
2806}
2807
2808func emuinit() {
2809	var emunames []string
2810	dir, err := os.Open(dataDir + "/emus")
2811	if err == nil {
2812		emunames, _ = dir.Readdirnames(0)
2813		dir.Close()
2814	}
2815	for _, e := range emunames {
2816		if len(e) <= 4 {
2817			continue
2818		}
2819		ext := e[len(e)-4:]
2820		emu := Emu{
2821			ID:   fmt.Sprintf("/emu/%s", e),
2822			Name: e[:len(e)-4],
2823			Type: "image/" + ext[1:],
2824		}
2825		allemus = append(allemus, emu)
2826	}
2827	sort.Slice(allemus, func(i, j int) bool {
2828		return allemus[i].Name < allemus[j].Name
2829	})
2830}
2831
2832var savedassetparams = make(map[string]string)
2833
2834func getassetparam(file string) string {
2835	if p, ok := savedassetparams[file]; ok {
2836		return p
2837	}
2838	data, err := os.ReadFile(file)
2839	if err != nil {
2840		return ""
2841	}
2842	hasher := sha512.New()
2843	hasher.Write(data)
2844
2845	return fmt.Sprintf("?v=%.8x", hasher.Sum(nil))
2846}
2847
2848func startWatcher() {
2849	watcher, err := gonix.NewWatcher()
2850	if err != nil {
2851		return
2852	}
2853	go func() {
2854		s := dataDir + "/views/local.css"
2855		for {
2856			err := watcher.WatchFile(s)
2857			if err != nil {
2858				break
2859			}
2860			err = watcher.WaitForChange()
2861			if err != nil {
2862				dlog.Printf("can't wait: %s", err)
2863				break
2864			}
2865			dlog.Printf("local.css changed")
2866			delete(savedassetparams, s)
2867			savedassetparams[s] = getassetparam(s)
2868		}
2869	}()
2870}
2871
2872var usefcgi bool
2873
2874func serve() {
2875	db := opendatabase()
2876	login.Init(login.InitArgs{Db: db, Logger: ilog, Insecure: develMode, SameSiteStrict: !develMode})
2877
2878	listener, err := openListener()
2879	if err != nil {
2880		elog.Fatal(err)
2881	}
2882	runBackendServer()
2883	go enditall()
2884	go redeliverator()
2885	go tracker()
2886	go syndicator()
2887	go bgmonitor()
2888	go qotd()
2889	loadLingo()
2890	emuinit()
2891
2892	var toload []string
2893	dents, _ := os.ReadDir(viewDir + "/views")
2894	for _, dent := range dents {
2895		name := dent.Name()
2896		if strings.HasSuffix(name, ".html") {
2897			toload = append(toload, viewDir+"/views/"+name)
2898		}
2899	}
2900
2901	readviews = templates.Load(develMode, toload...)
2902	if !develMode {
2903		assets := []string{
2904			viewDir + "/views/style.css",
2905			dataDir + "/views/local.css",
2906			viewDir + "/views/honkpage.js",
2907			viewDir + "/views/misc.js",
2908			dataDir + "/views/local.js",
2909		}
2910		for _, s := range assets {
2911			savedassetparams[s] = getassetparam(s)
2912		}
2913		loadAvatarColors()
2914	}
2915	startWatcher()
2916
2917	securitizeweb()
2918
2919	mux := mux.NewRouter()
2920	mux.Use(addcspheaders)
2921	mux.Use(login.Checker)
2922
2923	mux.Handle("/api", login.TokenRequired(http.HandlerFunc(apihandler)))
2924
2925	posters := mux.Methods("POST").Subrouter()
2926	getters := mux.Methods("GET").Subrouter()
2927
2928	getters.HandleFunc("/", homepage)
2929	getters.HandleFunc("/home", homepage)
2930	getters.HandleFunc("/front", homepage)
2931	getters.HandleFunc("/events", homepage)
2932	getters.HandleFunc("/robots.txt", nomoroboto)
2933	getters.HandleFunc("/rss", showrss)
2934	getters.HandleFunc("/"+userSep+"/{name:[\\pL[:digit:]]+}", showuser)
2935	getters.HandleFunc("/"+userSep+"/{name:[\\pL[:digit:]]+}.json", showuser)
2936	getters.HandleFunc("/"+userSep+"/{name:[\\pL[:digit:]]+}/"+honkSep+"/{xid:[\\pL[:digit:]]+}", showonehonk)
2937	getters.HandleFunc("/"+userSep+"/{name:[\\pL[:digit:]]+}/"+honkSep+"/{xid:[\\pL[:digit:]]+}.json", showonehonk)
2938	getters.HandleFunc("/"+userSep+"/{name:[\\pL[:digit:]]+}/rss", showrss)
2939	posters.HandleFunc("/"+userSep+"/{name:[\\pL[:digit:]]+}/inbox", inbox)
2940	getters.HandleFunc("/"+userSep+"/{name:[\\pL[:digit:]]+}/outbox", outbox)
2941	getters.HandleFunc("/"+userSep+"/{name:[\\pL[:digit:]]+}/followers", emptiness)
2942	getters.HandleFunc("/"+userSep+"/{name:[\\pL[:digit:]]+}/following", emptiness)
2943	getters.HandleFunc("/a", avatate)
2944	getters.HandleFunc("/o", thelistingoftheontologies)
2945	getters.HandleFunc("/o/{name:.+}", showontology)
2946	getters.HandleFunc("/d/{xid:[\\pL[:digit:].]+}", servefile)
2947	getters.HandleFunc("/emu/{emu:[^.]*[^/]+}", serveemu)
2948	getters.HandleFunc("/meme/{meme:[^.]*[^/]+}", servememe)
2949	getters.HandleFunc("/.well-known/webfinger", fingerlicker)
2950
2951	getters.HandleFunc("/flag/{code:.+}", showflag)
2952
2953	getters.HandleFunc("/server", serveractor)
2954	posters.HandleFunc("/server/inbox", serverinbox)
2955	posters.HandleFunc("/inbox", serverinbox)
2956
2957	posters.HandleFunc("/csp-violation", fiveoh)
2958
2959	getters.HandleFunc("/style.css", serveviewasset)
2960	getters.HandleFunc("/honkpage.js", serveviewasset)
2961	getters.HandleFunc("/misc.js", serveviewasset)
2962	getters.HandleFunc("/local.css", servedataasset)
2963	getters.HandleFunc("/local.js", servedataasset)
2964	getters.HandleFunc("/icon.png", servedataasset)
2965	getters.HandleFunc("/favicon.ico", servedataasset)
2966
2967	getters.HandleFunc("/about", servehtml)
2968	getters.HandleFunc("/login", servehtml)
2969	posters.HandleFunc("/dologin", login.LoginFunc)
2970	getters.HandleFunc("/logout", login.LogoutFunc)
2971	getters.HandleFunc("/help/{name:[\\pL[:digit:]_.-]+}", servehelp)
2972
2973	loggedin := mux.NewRoute().Subrouter()
2974	loggedin.Use(login.Required)
2975	loggedin.HandleFunc("/first", homepage)
2976	loggedin.HandleFunc("/chatter", showchatter)
2977	loggedin.Handle("/sendchonk", login.CSRFWrap("sendchonk", http.HandlerFunc(submitchonk)))
2978	loggedin.HandleFunc("/saved", homepage)
2979	loggedin.HandleFunc("/account", accountpage)
2980	loggedin.HandleFunc("/funzone", showfunzone)
2981	loggedin.HandleFunc("/chpass", dochpass)
2982	loggedin.HandleFunc("/atme", homepage)
2983	loggedin.HandleFunc("/longago", homepage)
2984	loggedin.HandleFunc("/hfcs", hfcspage)
2985	loggedin.HandleFunc("/xzone", xzone)
2986	loggedin.HandleFunc("/newhonk", newhonkpage)
2987	loggedin.HandleFunc("/edit", edithonkpage)
2988	loggedin.Handle("/honk", login.CSRFWrap("honkhonk", http.HandlerFunc(websubmithonk)))
2989	loggedin.Handle("/bonk", login.CSRFWrap("honkhonk", http.HandlerFunc(submitbonk)))
2990	loggedin.Handle("/zonkit", login.CSRFWrap("honkhonk", http.HandlerFunc(zonkit)))
2991	loggedin.Handle("/savehfcs", login.CSRFWrap("filter", http.HandlerFunc(savehfcs)))
2992	loggedin.Handle("/saveuser", login.CSRFWrap("saveuser", http.HandlerFunc(saveuser)))
2993	loggedin.Handle("/ximport", login.CSRFWrap("ximport", http.HandlerFunc(ximport)))
2994	loggedin.HandleFunc("/honkers", showhonkers)
2995	loggedin.HandleFunc("/h/{name:[\\pL[:digit:]_.-]+}", showhonker)
2996	loggedin.HandleFunc("/h", showhonker)
2997	loggedin.HandleFunc("/c/{name:[\\pL[:digit:]_.-]+}", showcombo)
2998	loggedin.HandleFunc("/c", showcombos)
2999	loggedin.HandleFunc("/t", showconvoy)
3000	loggedin.HandleFunc("/q", showsearch)
3001	loggedin.HandleFunc("/hydra", webhydra)
3002	loggedin.HandleFunc("/emus", showemus)
3003	loggedin.Handle("/submithonker", login.CSRFWrap("submithonker", http.HandlerFunc(websubmithonker)))
3004
3005	if usefcgi {
3006		err = fcgi.Serve(listener, mux)
3007	} else {
3008		err = http.Serve(listener, mux)
3009	}
3010	if err != nil && !errors.Is(err, net.ErrClosed) {
3011		elog.Printf("serve error: %s", err)
3012	}
3013	time.Sleep(15 * time.Second)
3014	elog.Printf("fell off the bottom")
3015}