1//
   2// Copyright (c) 2019-2024 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	"context"
  21	"crypto/sha512"
  22	"database/sql"
  23	"errors"
  24	"fmt"
  25	"html/template"
  26	"io"
  27	"log"
  28	notrand "math/rand"
  29	"mime/multipart"
  30	"net"
  31	"net/http"
  32	"net/http/fcgi"
  33	"net/url"
  34	"os"
  35	"os/signal"
  36	"path"
  37	"path/filepath"
  38	"regexp"
  39	"runtime/pprof"
  40	"sort"
  41	"strconv"
  42	"strings"
  43	"sync"
  44	"syscall"
  45	"time"
  46	"unicode/utf8"
  47
  48	"github.com/gorilla/handlers"
  49	"github.com/gorilla/mux"
  50	"humungus.tedunangst.com/r/gonix"
  51	"humungus.tedunangst.com/r/webs/gencache"
  52	"humungus.tedunangst.com/r/webs/httpsig"
  53	"humungus.tedunangst.com/r/webs/junk"
  54	"humungus.tedunangst.com/r/webs/login"
  55	"humungus.tedunangst.com/r/webs/rss"
  56	"humungus.tedunangst.com/r/webs/templates"
  57)
  58
  59var readviews *templates.Template
  60
  61var userSep = "u"
  62var honkSep = "h"
  63
  64var develMode = false
  65
  66var allemus []Emu
  67
  68func getuserstyle(u *login.UserInfo) template.HTMLAttr {
  69	if u == nil {
  70		return ""
  71	}
  72	user, _ := butwhatabout(u.Username)
  73	class := template.HTMLAttr("")
  74	if user.Options.SkinnyCSS {
  75		class += `class="skinny"`
  76	}
  77	return class
  78}
  79
  80func getmaplink(u *login.UserInfo) string {
  81	if u == nil {
  82		return "osm"
  83	}
  84	user, _ := butwhatabout(u.Username)
  85	ml := user.Options.MapLink
  86	if ml == "" {
  87		ml = "osm"
  88	}
  89	return ml
  90}
  91
  92func getInfo(r *http.Request) map[string]interface{} {
  93	templinfo := make(map[string]interface{})
  94	templinfo["StyleParam"] = getassetparam(viewDir + "/views/style.css")
  95	templinfo["LocalStyleParam"] = getassetparam(dataDir + "/views/local.css")
  96	templinfo["JSParam"] = getassetparam(viewDir + "/views/honkpage.js")
  97	templinfo["MiscJSParam"] = getassetparam(viewDir + "/views/misc.js")
  98	templinfo["LocalJSParam"] = getassetparam(dataDir + "/views/local.js")
  99	templinfo["ServerName"] = serverName
 100	templinfo["IconName"] = iconName
 101	templinfo["UserSep"] = userSep
 102	if r == nil {
 103		return templinfo
 104	}
 105	if u := login.GetUserInfo(r); u != nil {
 106		templinfo["UserInfo"], _ = butwhatabout(u.Username)
 107		templinfo["UserStyle"] = getuserstyle(u)
 108		combos, _ := combocache.Get(UserID(u.UserID))
 109		templinfo["Combos"] = combos
 110	}
 111	return templinfo
 112}
 113
 114var oldnews = gencache.New(gencache.Options[string, []byte]{
 115	Fill: func(url string) ([]byte, bool) {
 116		templinfo := getInfo(nil)
 117		var honks []*Honk
 118		var userid UserID = -1
 119
 120		templinfo["ServerMessage"] = serverMsg
 121		switch url {
 122		case "/events":
 123			honks = geteventhonks(userid)
 124			templinfo["ServerMessage"] = "some recent and upcoming events"
 125		default:
 126			templinfo["ShowRSS"] = true
 127			honks = getpublichonks()
 128		}
 129		reverbolate(userid, honks)
 130		templinfo["Honks"] = honks
 131		templinfo["MapLink"] = getmaplink(nil)
 132		var buf bytes.Buffer
 133		err := readviews.Execute(&buf, "honkpage.html", templinfo)
 134		if err != nil {
 135			elog.Print(err)
 136		}
 137		return buf.Bytes(), true
 138
 139	},
 140	Duration: 1 * time.Minute,
 141})
 142
 143func lonelypage(w http.ResponseWriter, r *http.Request) {
 144	page, _ := oldnews.Get(r.URL.Path)
 145	if !develMode {
 146		w.Header().Set("Cache-Control", "max-age=60")
 147	}
 148	w.Write(page)
 149}
 150
 151func homepage(w http.ResponseWriter, r *http.Request) {
 152	u := login.GetUserInfo(r)
 153	if u == nil {
 154		lonelypage(w, r)
 155		return
 156	}
 157	templinfo := getInfo(r)
 158	var honks []*Honk
 159	var userid UserID = -1
 160
 161	templinfo["ServerMessage"] = serverMsg
 162	if u == nil || r.URL.Path == "/front" {
 163		switch r.URL.Path {
 164		case "/events":
 165			honks = geteventhonks(userid)
 166			templinfo["ServerMessage"] = "some recent and upcoming events"
 167		default:
 168			templinfo["ShowRSS"] = true
 169			honks = getpublichonks()
 170		}
 171	} else {
 172		userid = UserID(u.UserID)
 173		switch r.URL.Path {
 174		case "/atme":
 175			templinfo["ServerMessage"] = "at me!"
 176			templinfo["PageName"] = "atme"
 177			honks = gethonksforme(userid, 0)
 178			honks = osmosis(honks, userid, false)
 179			menewnone(userid)
 180			templinfo["UserInfo"], _ = butwhatabout(u.Username)
 181		case "/longago":
 182			templinfo["ServerMessage"] = "long ago and far away!"
 183			templinfo["PageName"] = "longago"
 184			honks = gethonksfromlongago(userid, 0)
 185			honks = osmosis(honks, userid, false)
 186		case "/events":
 187			templinfo["ServerMessage"] = "some recent and upcoming events"
 188			templinfo["PageName"] = "events"
 189			honks = geteventhonks(userid)
 190			honks = osmosis(honks, userid, true)
 191		case "/first":
 192			templinfo["PageName"] = "first"
 193			honks = gethonksforuserfirstclass(userid, 0)
 194			honks = osmosis(honks, userid, true)
 195		case "/saved":
 196			templinfo["ServerMessage"] = "saved honks"
 197			templinfo["PageName"] = "saved"
 198			honks = getsavedhonks(userid, 0)
 199		default:
 200			templinfo["PageName"] = "home"
 201			honks = gethonksforuser(userid, 0)
 202			honks = osmosis(honks, userid, true)
 203		}
 204		templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
 205	}
 206
 207	honkpage(w, u, honks, templinfo)
 208}
 209
 210func showemus(w http.ResponseWriter, r *http.Request) {
 211	templinfo := getInfo(r)
 212	templinfo["Emus"] = allemus
 213	err := readviews.Execute(w, "emus.html", templinfo)
 214	if err != nil {
 215		elog.Print(err)
 216	}
 217}
 218
 219func showfunzone(w http.ResponseWriter, r *http.Request) {
 220	var emunames, memenames []string
 221	emuext := make(map[string]string)
 222	dir, err := os.Open(dataDir + "/emus")
 223	if err == nil {
 224		emunames, _ = dir.Readdirnames(0)
 225		dir.Close()
 226	}
 227	for i, e := range emunames {
 228		if len(e) > 4 {
 229			emunames[i] = e[:len(e)-4]
 230			emuext[emunames[i]] = e[len(e)-4:]
 231		}
 232	}
 233	dir, err = os.Open(dataDir + "/memes")
 234	if err == nil {
 235		memenames, _ = dir.Readdirnames(0)
 236		dir.Close()
 237	}
 238	sort.Strings(emunames)
 239	sort.Strings(memenames)
 240	templinfo := getInfo(r)
 241	templinfo["Emus"] = emunames
 242	templinfo["Emuext"] = emuext
 243	templinfo["Memes"] = memenames
 244	err = readviews.Execute(w, "funzone.html", templinfo)
 245	if err != nil {
 246		elog.Print(err)
 247	}
 248}
 249
 250func showrss(w http.ResponseWriter, r *http.Request) {
 251	name := mux.Vars(r)["name"]
 252
 253	var honks []*Honk
 254	if name != "" {
 255		honks = gethonksbyuser(name, false, 0)
 256	} else {
 257		honks = getpublichonks()
 258	}
 259	reverbolate(-1, honks)
 260
 261	home := serverURL("/")
 262	base := home
 263	if name != "" {
 264		home += "u/" + name
 265		name += " "
 266	}
 267	feed := rss.Feed{
 268		Title:       name + "honk",
 269		Link:        home,
 270		Description: name + "honk rss",
 271		Image: &rss.Image{
 272			URL:   base + "icon.png",
 273			Title: name + "honk rss",
 274			Link:  home,
 275		},
 276	}
 277	var modtime time.Time
 278	for _, honk := range honks {
 279		if !firstclass(honk) {
 280			continue
 281		}
 282		desc := string(honk.HTML)
 283		if t := honk.Time; t != nil {
 284			desc += fmt.Sprintf(`<p>Time: %s`, t.StartTime.Local().Format("03:04PM MST Mon Jan 02"))
 285			if t.Duration != 0 {
 286				desc += fmt.Sprintf(`<br>Duration: %s`, t.Duration)
 287			}
 288		}
 289		if p := honk.Place; p != nil {
 290			desc += string(templates.Sprintf(`<p>Location: <a href="%s">%s</a> %f %f`,
 291				p.Url, p.Name, p.Latitude, p.Longitude))
 292		}
 293		for _, d := range honk.Donks {
 294			desc += string(templates.Sprintf(`<p><a href="%s">Attachment: %s</a>`,
 295				d.URL, d.Desc))
 296			if strings.HasPrefix(d.Media, "image") {
 297				desc += string(templates.Sprintf(`<img src="%s">`, d.URL))
 298			}
 299		}
 300
 301		feed.Items = append(feed.Items, &rss.Item{
 302			Title:       fmt.Sprintf("%s %s %s", honk.Username, honk.What, honk.XID),
 303			Description: rss.CData{Data: desc},
 304			Link:        honk.URL,
 305			PubDate:     honk.Date.Format(time.RFC1123),
 306			Guid:        &rss.Guid{IsPermaLink: true, Value: honk.URL},
 307		})
 308		if honk.Date.After(modtime) {
 309			modtime = honk.Date
 310		}
 311	}
 312	if !develMode {
 313		w.Header().Set("Cache-Control", "max-age=300")
 314		w.Header().Set("Last-Modified", modtime.Format(http.TimeFormat))
 315	}
 316
 317	err := feed.Write(w)
 318	if err != nil {
 319		elog.Printf("error writing rss: %s", err)
 320	}
 321}
 322
 323func crappola(j junk.Junk) bool {
 324	t := firstofmany(j, "type")
 325	if t == "Delete" {
 326		a, _ := j.GetString("actor")
 327		o, _ := j.GetString("object")
 328		if a == o {
 329			dlog.Printf("crappola from %s", a)
 330			return true
 331		}
 332	}
 333	if t == "Announce" {
 334		if obj, ok := j.GetMap("object"); ok {
 335			j = obj
 336			t = firstofmany(j, "type")
 337		}
 338	}
 339	if t == "Undo" {
 340		if obj, ok := j.GetMap("object"); ok {
 341			j = obj
 342			t = firstofmany(j, "type")
 343		}
 344	}
 345	if t == "Like" || t == "Dislike" || t == "Listen" {
 346		return true
 347	}
 348	if t == "EmojiReact" {
 349		o, _ := j.GetString("object")
 350		if originate(o) != serverName {
 351			return true
 352		}
 353	}
 354	return false
 355}
 356
 357func ping(user *WhatAbout, who string) {
 358	if targ := fullname(who, user.ID); targ != "" {
 359		who = targ
 360	}
 361	if !strings.HasPrefix(who, "https://") {
 362		who = gofish(who)
 363	}
 364	if who == "" {
 365		ilog.Printf("nobody to ping!")
 366		return
 367	}
 368	box, ok := boxofboxes.Get(who)
 369	if !ok {
 370		ilog.Printf("no inbox to ping %s", who)
 371		return
 372	}
 373	ilog.Printf("sending ping to %s", box.In)
 374	j := junk.New()
 375	j["@context"] = itiswhatitis
 376	j["type"] = "Ping"
 377	j["id"] = user.URL + "/ping/" + xfiltrate()
 378	j["actor"] = user.URL
 379	j["to"] = who
 380	ki := ziggy(user.ID)
 381	if ki == nil {
 382		return
 383	}
 384	err := PostJunk(ki.keyname, ki.seckey, box.In, j)
 385	if err != nil {
 386		elog.Printf("can't send ping: %s", err)
 387		return
 388	}
 389	ilog.Printf("sent ping to %s: %s", who, j["id"])
 390}
 391
 392func pong(user *WhatAbout, who string, obj string) {
 393	box, ok := boxofboxes.Get(who)
 394	if !ok {
 395		ilog.Printf("no inbox to pong %s", who)
 396		return
 397	}
 398	j := junk.New()
 399	j["@context"] = itiswhatitis
 400	j["type"] = "Pong"
 401	j["id"] = user.URL + "/pong/" + xfiltrate()
 402	j["actor"] = user.URL
 403	j["to"] = who
 404	j["object"] = obj
 405	ki := ziggy(user.ID)
 406	if ki == nil {
 407		return
 408	}
 409	err := PostJunk(ki.keyname, ki.seckey, box.In, j)
 410	if err != nil {
 411		elog.Printf("can't send pong: %s", err)
 412		return
 413	}
 414}
 415
 416func getinbox(w http.ResponseWriter, r *http.Request) {
 417	name := mux.Vars(r)["name"]
 418	user, err := butwhatabout(name)
 419	if err != nil {
 420		http.NotFound(w, r)
 421		return
 422	}
 423	u := login.GetUserInfo(r)
 424	if user.ID != UserID(u.UserID) {
 425		http.Error(w, "that's not you!", http.StatusForbidden)
 426		return
 427	}
 428
 429	honks := gethonksforuser(user.ID, 0)
 430	if len(honks) > 60 {
 431		honks = honks[0:60]
 432	}
 433
 434	jonks := make([]junk.Junk, 0, len(honks))
 435	for _, h := range honks {
 436		j, _ := jonkjonk(user, h)
 437		jonks = append(jonks, j)
 438	}
 439
 440	j := junk.New()
 441	j["@context"] = itiswhatitis
 442	j["id"] = user.URL + "/inbox"
 443	j["attributedTo"] = user.URL
 444	j["type"] = "OrderedCollection"
 445	j["totalItems"] = len(jonks)
 446	j["orderedItems"] = jonks
 447
 448	w.Header().Set("Content-Type", theonetruename)
 449	j.Write(w)
 450}
 451
 452func postinbox(w http.ResponseWriter, r *http.Request) {
 453	name := mux.Vars(r)["name"]
 454	user, err := butwhatabout(name)
 455	if err != nil {
 456		http.NotFound(w, r)
 457		return
 458	}
 459	if stealthmode(user.ID, r) {
 460		http.NotFound(w, r)
 461		return
 462	}
 463	var buf bytes.Buffer
 464	limiter := io.LimitReader(r.Body, 1*1024*1024)
 465	io.Copy(&buf, limiter)
 466	payload := buf.Bytes()
 467	j, err := junk.FromBytes(payload)
 468	if err != nil {
 469		ilog.Printf("bad payload: %s", err)
 470		ilog.Writer().Write(payload)
 471		ilog.Writer().Write([]byte{'\n'})
 472		return
 473	}
 474
 475	if crappola(j) {
 476		return
 477	}
 478	what := firstofmany(j, "type")
 479	who, _ := j.GetString("actor")
 480	if rejectactor(user.ID, who) {
 481		return
 482	}
 483
 484	keyname, err := httpsig.VerifyRequest(r, payload, zaggy)
 485	if err != nil && keyname != "" {
 486		savingthrow(keyname)
 487		keyname, err = httpsig.VerifyRequest(r, payload, zaggy)
 488	}
 489	if err != nil {
 490		ilog.Printf("inbox message failed signature for %s from %s: %s", keyname, r.Header.Get("X-Forwarded-For"), err)
 491		if keyname != "" {
 492			ilog.Printf("bad signature from %s", keyname)
 493		}
 494		http.Error(w, "what did you call me?", http.StatusUnauthorized)
 495		return
 496	}
 497	origin := keymatch(keyname, who)
 498	if origin == "" {
 499		ilog.Printf("keyname actor mismatch: %s <> %s", keyname, who)
 500		if what == "Create" {
 501			var xid string
 502			obj, ok := j.GetMap("object")
 503			if ok {
 504				xid, _ = obj.GetString("id")
 505			} else {
 506				xid, _ = j.GetString("object")
 507			}
 508			if xid != "" {
 509				dlog.Printf("getting forwarded create from %s: %s", keyname, xid)
 510				go grabhonk(user, xid)
 511			}
 512		}
 513		return
 514	}
 515
 516	switch what {
 517	case "Ping":
 518		id, _ := j.GetString("id")
 519		ilog.Printf("ping from %s: %s", who, id)
 520		pong(user, who, id)
 521	case "Pong":
 522		obj, _ := j.GetString("object")
 523		ilog.Printf("pong from %s: %s", who, obj)
 524	case "Follow":
 525		obj, _ := j.GetString("object")
 526		if obj != user.URL {
 527			ilog.Printf("can't follow %s", obj)
 528			return
 529		}
 530		followme(user, who, who, j)
 531	case "Accept":
 532		followyou2(user, j)
 533	case "Reject":
 534		nofollowyou2(user, j)
 535	case "Update":
 536		obj, ok := j.GetMap("object")
 537		if ok {
 538			what := firstofmany(obj, "type")
 539			switch what {
 540			case "Service":
 541				fallthrough
 542			case "Person":
 543				return
 544			case "Question":
 545				return
 546			}
 547		}
 548		go xonksaver(user, j, origin)
 549	case "Undo":
 550		obj, ok := j.GetMap("object")
 551		if !ok {
 552			folxid, ok := j.GetString("object")
 553			if ok && originate(folxid) == origin {
 554				unfollowme(user, "", "", j)
 555			}
 556			return
 557		}
 558		what := firstofmany(obj, "type")
 559		switch what {
 560		case "Follow":
 561			unfollowme(user, who, who, j)
 562		case "Announce":
 563			xid, _ := obj.GetString("object")
 564			dlog.Printf("undo announce: %s", xid)
 565		case "Like":
 566		default:
 567			ilog.Printf("unknown undo: %s", what)
 568		}
 569	case "EmojiReact":
 570		obj, ok := j.GetString("object")
 571		if ok {
 572			content, _ := j.GetString("content")
 573			addreaction(user, obj, who, content)
 574		}
 575	default:
 576		go saveandcheck(user, j, origin)
 577	}
 578}
 579
 580func saveandcheck(user *WhatAbout, j junk.Junk, origin string) {
 581	xonk := xonksaver(user, j, origin)
 582	if xonk == nil {
 583		return
 584	}
 585	if sname := shortname(user.ID, xonk.Honker); sname == "" {
 586		dlog.Printf("received unexpected activity from %s", xonk.Honker)
 587		if xonk.Whofore == 0 {
 588			dlog.Printf("it's not even for me!")
 589		}
 590	}
 591}
 592
 593func serverinbox(w http.ResponseWriter, r *http.Request) {
 594	user := getserveruser()
 595	if stealthmode(user.ID, r) {
 596		http.NotFound(w, r)
 597		return
 598	}
 599	var buf bytes.Buffer
 600	io.Copy(&buf, r.Body)
 601	payload := buf.Bytes()
 602	j, err := junk.FromBytes(payload)
 603	if err != nil {
 604		ilog.Printf("bad payload: %s", err)
 605		ilog.Writer().Write(payload)
 606		ilog.Writer().Write([]byte{'\n'})
 607		return
 608	}
 609	if crappola(j) {
 610		return
 611	}
 612	keyname, err := httpsig.VerifyRequest(r, payload, zaggy)
 613	if err != nil && keyname != "" {
 614		savingthrow(keyname)
 615		keyname, err = httpsig.VerifyRequest(r, payload, zaggy)
 616	}
 617	if err != nil {
 618		ilog.Printf("inbox message failed signature for %s from %s: %s", keyname, r.Header.Get("X-Forwarded-For"), err)
 619		if keyname != "" {
 620			ilog.Printf("bad signature from %s", keyname)
 621		}
 622		http.Error(w, "what did you call me?", http.StatusUnauthorized)
 623		return
 624	}
 625	who, _ := j.GetString("actor")
 626	origin := keymatch(keyname, who)
 627	if origin == "" {
 628		ilog.Printf("keyname actor mismatch: %s <> %s", keyname, who)
 629		return
 630	}
 631	if rejectactor(user.ID, who) {
 632		return
 633	}
 634	re_ont := regexp.MustCompile(serverURL("/o") + "/([\\pL[:digit:]]+)")
 635	what := firstofmany(j, "type")
 636	dlog.Printf("server got a %s", what)
 637	switch what {
 638	case "Follow":
 639		obj, _ := j.GetString("object")
 640		if obj == user.URL {
 641			ilog.Printf("can't follow the server!")
 642			return
 643		}
 644		m := re_ont.FindStringSubmatch(obj)
 645		if len(m) != 2 {
 646			ilog.Printf("not sure how to handle this")
 647			return
 648		}
 649		ont := "#" + m[1]
 650
 651		followme(user, who, ont, j)
 652	case "Undo":
 653		obj, ok := j.GetMap("object")
 654		if !ok {
 655			ilog.Printf("unknown undo no object")
 656			return
 657		}
 658		what := firstofmany(obj, "type")
 659		if what != "Follow" {
 660			ilog.Printf("unknown undo: %s", what)
 661			return
 662		}
 663		targ, _ := obj.GetString("object")
 664		m := re_ont.FindStringSubmatch(targ)
 665		if len(m) != 2 {
 666			ilog.Printf("not sure how to handle this")
 667			return
 668		}
 669		ont := "#" + m[1]
 670		unfollowme(user, who, ont, j)
 671	default:
 672		ilog.Printf("unhandled server activity: %s", what)
 673		dumpactivity(j)
 674	}
 675}
 676
 677func serveractor(w http.ResponseWriter, r *http.Request) {
 678	user := getserveruser()
 679	if stealthmode(user.ID, r) {
 680		http.NotFound(w, r)
 681		return
 682	}
 683	j := junkuser(user)
 684	j.Write(w)
 685}
 686
 687func ximport(w http.ResponseWriter, r *http.Request) {
 688	u := login.GetUserInfo(r)
 689	xid := strings.TrimSpace(r.FormValue("q"))
 690	xonk := getxonk(UserID(u.UserID), xid)
 691	if xonk == nil {
 692		p, _ := investigate(xid)
 693		if p != nil {
 694			xid = p.XID
 695		}
 696		j, err := GetJunk(UserID(u.UserID), xid)
 697		if err != nil {
 698			http.Error(w, "error getting external object", http.StatusInternalServerError)
 699			ilog.Printf("error getting external object: %s", err)
 700			return
 701		}
 702		allinjest(originate(xid), j)
 703		dlog.Printf("importing %s", xid)
 704		user, _ := butwhatabout(u.Username)
 705
 706		info, _ := somethingabout(j)
 707		if info == nil {
 708			xonk = xonksaver(user, j, originate(xid))
 709		} else if info.What == SomeActor {
 710			outbox, _ := j.GetString("outbox")
 711			gimmexonks(user, outbox)
 712			http.Redirect(w, r, "/h?xid="+url.QueryEscape(xid), http.StatusSeeOther)
 713			return
 714		} else if info.What == SomeCollection {
 715			gimmexonks(user, xid)
 716			http.Redirect(w, r, "/xzone", http.StatusSeeOther)
 717			return
 718		}
 719	}
 720	convoy := ""
 721	if xonk != nil {
 722		convoy = xonk.Convoy
 723	}
 724	http.Redirect(w, r, "/t?c="+url.QueryEscape(convoy), http.StatusSeeOther)
 725}
 726
 727func xzone(w http.ResponseWriter, r *http.Request) {
 728	u := login.GetUserInfo(r)
 729	rows, err := stmtRecentHonkers.Query(u.UserID, u.UserID)
 730	if err != nil {
 731		elog.Printf("query err: %s", err)
 732		return
 733	}
 734	defer rows.Close()
 735	honkers := make([]Honker, 0, 256)
 736	for rows.Next() {
 737		var xid string
 738		rows.Scan(&xid)
 739		honkers = append(honkers, Honker{XID: xid})
 740	}
 741	rows.Close()
 742	for i := range honkers {
 743		_, honkers[i].Handle = handles(honkers[i].XID)
 744	}
 745	templinfo := getInfo(r)
 746	templinfo["XCSRF"] = login.GetCSRF("ximport", r)
 747	templinfo["Honkers"] = honkers
 748	err = readviews.Execute(w, "xzone.html", templinfo)
 749	if err != nil {
 750		elog.Print(err)
 751	}
 752}
 753
 754var oldoutbox = gencache.New(gencache.Options[string, []byte]{Fill: func(name string) ([]byte, bool) {
 755	user, err := butwhatabout(name)
 756	if err != nil {
 757		return nil, false
 758	}
 759	honks := gethonksbyuser(name, false, 0)
 760	if len(honks) > 20 {
 761		honks = honks[0:20]
 762	}
 763
 764	jonks := make([]junk.Junk, 0, len(honks))
 765	for _, h := range honks {
 766		j, _ := jonkjonk(user, h)
 767		jonks = append(jonks, j)
 768	}
 769
 770	j := junk.New()
 771	j["@context"] = itiswhatitis
 772	j["id"] = user.URL + "/outbox"
 773	j["attributedTo"] = user.URL
 774	j["type"] = "OrderedCollection"
 775	j["totalItems"] = len(jonks)
 776	j["orderedItems"] = jonks
 777
 778	return j.ToBytes(), true
 779}, Duration: 1 * time.Minute})
 780
 781func getoutbox(w http.ResponseWriter, r *http.Request) {
 782	name := mux.Vars(r)["name"]
 783	user, err := butwhatabout(name)
 784	if err != nil {
 785		http.NotFound(w, r)
 786		return
 787	}
 788	if stealthmode(user.ID, r) {
 789		http.NotFound(w, r)
 790		return
 791	}
 792	j, ok := oldoutbox.Get(name)
 793	if ok {
 794		w.Header().Set("Content-Type", theonetruename)
 795		w.Write(j)
 796	} else {
 797		http.NotFound(w, r)
 798	}
 799}
 800
 801func postoutbox(w http.ResponseWriter, r *http.Request) {
 802	name := mux.Vars(r)["name"]
 803	user, err := butwhatabout(name)
 804	if err != nil {
 805		http.NotFound(w, r)
 806		return
 807	}
 808	u := login.GetUserInfo(r)
 809	if user.ID != UserID(u.UserID) {
 810		http.Error(w, "that's not you!", http.StatusForbidden)
 811		return
 812	}
 813
 814	limiter := io.LimitReader(r.Body, 1*1024*1024)
 815	j, err := junk.Read(limiter)
 816	if err != nil {
 817		http.Error(w, "that's not json!", http.StatusBadRequest)
 818		return
 819	}
 820
 821	who, _ := j.GetString("actor")
 822	if who != user.URL {
 823		http.Error(w, "that's not you!", http.StatusForbidden)
 824		return
 825	}
 826	what := firstofmany(j, "type")
 827	switch what {
 828	case "Create":
 829		honk := xonksaver2(user, j, serverName, true)
 830		if honk == nil {
 831			dlog.Printf("returned nil")
 832			return
 833		}
 834		go honkworldwide(user, honk)
 835	default:
 836		http.Error(w, "not sure about that", http.StatusBadRequest)
 837	}
 838}
 839
 840var oldempties = gencache.New(gencache.Options[string, []byte]{Fill: func(url string) ([]byte, bool) {
 841	colname := "/followers"
 842	if strings.HasSuffix(url, "/following") {
 843		colname = "/following"
 844	}
 845	user := serverURL("%s", url[:len(url)-10])
 846	j := junk.New()
 847	j["@context"] = itiswhatitis
 848	j["id"] = user + colname
 849	j["attributedTo"] = user
 850	j["type"] = "OrderedCollection"
 851	j["totalItems"] = 0
 852	j["orderedItems"] = []junk.Junk{}
 853
 854	return j.ToBytes(), true
 855}})
 856
 857func emptiness(w http.ResponseWriter, r *http.Request) {
 858	name := mux.Vars(r)["name"]
 859	user, err := butwhatabout(name)
 860	if err != nil {
 861		http.NotFound(w, r)
 862		return
 863	}
 864	if stealthmode(user.ID, r) {
 865		http.NotFound(w, r)
 866		return
 867	}
 868	j, ok := oldempties.Get(r.URL.Path)
 869	if ok {
 870		w.Header().Set("Content-Type", theonetruename)
 871		w.Write(j)
 872	} else {
 873		http.NotFound(w, r)
 874	}
 875}
 876
 877func showuser(w http.ResponseWriter, r *http.Request) {
 878	name := mux.Vars(r)["name"]
 879	user, err := butwhatabout(name)
 880	if err != nil {
 881		ilog.Printf("user not found %s: %s", name, err)
 882		http.NotFound(w, r)
 883		return
 884	}
 885	if stealthmode(user.ID, r) {
 886		http.NotFound(w, r)
 887		return
 888	}
 889	wantjson := false
 890	if strings.HasSuffix(r.URL.Path, ".json") {
 891		wantjson = true
 892	}
 893	if friendorfoe(r.Header.Get("Accept")) || wantjson {
 894		j, ok := asjonker(name)
 895		if ok {
 896			w.Header().Set("Content-Type", theonetruename)
 897			w.Write(j)
 898		} else {
 899			http.NotFound(w, r)
 900		}
 901		return
 902	}
 903	u := login.GetUserInfo(r)
 904	if u != nil && u.Username != name {
 905		u = nil
 906	}
 907	honks := gethonksbyuser(name, u != nil, 0)
 908	templinfo := getInfo(r)
 909	templinfo["PageName"] = "user"
 910	templinfo["PageArg"] = name
 911	templinfo["Name"] = user.Name
 912	templinfo["Honkology"] = oguser(user)
 913	templinfo["WhatAbout"] = user.HTAbout
 914	templinfo["ServerMessage"] = ""
 915	templinfo["APAltLink"] = templates.Sprintf("<link href='%s' rel='alternate' type='application/activity+json'>", user.URL)
 916	if u != nil {
 917		templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
 918	}
 919	honkpage(w, u, honks, templinfo)
 920}
 921
 922func showhonker(w http.ResponseWriter, r *http.Request) {
 923	u := login.GetUserInfo(r)
 924	name := mux.Vars(r)["name"]
 925	var honks []*Honk
 926	if name == "" {
 927		name = r.FormValue("xid")
 928		honks = gethonksbyxonker(UserID(u.UserID), name, 0)
 929	} else {
 930		honks = gethonksbyhonker(UserID(u.UserID), name, 0)
 931	}
 932	miniform := templates.Sprintf(`<form action="/submithonker" method="POST">
 933<input type="hidden" name="CSRF" value="%s">
 934<input type="hidden" name="url" value="%s">
 935<button tabindex=1 name="add honker" value="add honker">add honker</button>
 936</form>`, login.GetCSRF("submithonker", r), name)
 937	msg := templates.Sprintf(`honks by honker: <a href="%s" ref="noreferrer">%s</a>%s`, name, name, miniform)
 938	templinfo := getInfo(r)
 939	templinfo["PageName"] = "honker"
 940	templinfo["PageArg"] = name
 941	templinfo["ServerMessage"] = msg
 942	templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
 943	honkpage(w, u, honks, templinfo)
 944}
 945
 946func showcombo(w http.ResponseWriter, r *http.Request) {
 947	name := mux.Vars(r)["name"]
 948	u := login.GetUserInfo(r)
 949	honks := gethonksbycombo(UserID(u.UserID), name, 0)
 950	honks = osmosis(honks, UserID(u.UserID), true)
 951	templinfo := getInfo(r)
 952	templinfo["PageName"] = "combo"
 953	templinfo["PageArg"] = name
 954	templinfo["ServerMessage"] = "honks by combo: " + name
 955	templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
 956	honkpage(w, u, honks, templinfo)
 957}
 958func showconvoy(w http.ResponseWriter, r *http.Request) {
 959	c := r.FormValue("c")
 960	u := login.GetUserInfo(r)
 961	honks := gethonksbyconvoy(UserID(u.UserID), c, 0)
 962	templinfo := getInfo(r)
 963	if len(honks) > 0 {
 964		templinfo["TopHID"] = honks[0].ID
 965	}
 966	honks = osmosis(honks, UserID(u.UserID), false)
 967	//reversehonks(honks)
 968	honks = threadsort(honks)
 969	templinfo["PageName"] = "convoy"
 970	templinfo["PageArg"] = c
 971	templinfo["ServerMessage"] = "honks in convoy: " + c
 972	templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
 973	honkpage(w, u, honks, templinfo)
 974}
 975func showsearch(w http.ResponseWriter, r *http.Request) {
 976	q := r.FormValue("q")
 977	if strings.HasPrefix(q, "https://") {
 978		ximport(w, r)
 979		return
 980	}
 981	u := login.GetUserInfo(r)
 982	honks := gethonksbysearch(UserID(u.UserID), q, 0)
 983	templinfo := getInfo(r)
 984	templinfo["PageName"] = "search"
 985	templinfo["PageArg"] = q
 986	templinfo["ServerMessage"] = "honks for search: " + q
 987	templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
 988	honkpage(w, u, honks, templinfo)
 989}
 990func showontology(w http.ResponseWriter, r *http.Request) {
 991	name := mux.Vars(r)["name"]
 992	u := login.GetUserInfo(r)
 993	var userid UserID = -1
 994	if u != nil {
 995		userid = UserID(u.UserID)
 996	}
 997	honks := gethonksbyontology(userid, "#"+name, 0)
 998	if friendorfoe(r.Header.Get("Accept")) {
 999		if len(honks) > 40 {
1000			honks = honks[0:40]
1001		}
1002
1003		xids := make([]string, 0, len(honks))
1004		for _, h := range honks {
1005			xids = append(xids, h.XID)
1006		}
1007
1008		user := getserveruser()
1009
1010		j := junk.New()
1011		j["@context"] = itiswhatitis
1012		j["id"] = serverURL("/o/%s", name)
1013		j["name"] = "#" + name
1014		j["attributedTo"] = user.URL
1015		j["type"] = "OrderedCollection"
1016		j["totalItems"] = len(xids)
1017		j["orderedItems"] = xids
1018
1019		j.Write(w)
1020		return
1021	}
1022
1023	templinfo := getInfo(r)
1024	templinfo["ServerMessage"] = "honks by ontology: " + name
1025	templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
1026	honkpage(w, u, honks, templinfo)
1027}
1028
1029type Ont struct {
1030	Name  string
1031	Count int64
1032}
1033
1034func thelistingoftheontologies(w http.ResponseWriter, r *http.Request) {
1035	u := login.GetUserInfo(r)
1036	var userid UserID = -1
1037	if u != nil {
1038		userid = UserID(u.UserID)
1039	}
1040	rows, err := stmtAllOnts.Query(userid)
1041	if err != nil {
1042		elog.Printf("selection error: %s", err)
1043		return
1044	}
1045	defer rows.Close()
1046	onts := make([]Ont, 0, 1024)
1047	pops := make([]Ont, 0, 128)
1048	for rows.Next() {
1049		var o Ont
1050		err := rows.Scan(&o.Name, &o.Count)
1051		if err != nil {
1052			elog.Printf("error scanning ont: %s", err)
1053			continue
1054		}
1055		if utf8.RuneCountInString(o.Name) > 24 {
1056			continue
1057		}
1058		o.Name = o.Name[1:]
1059		onts = append(onts, o)
1060		if o.Count > 1 {
1061			pops = append(pops, o)
1062		}
1063	}
1064	sort.Slice(onts, func(i, j int) bool {
1065		return onts[i].Name < onts[j].Name
1066	})
1067	sort.Slice(pops, func(i, j int) bool {
1068		return pops[i].Count > pops[j].Count
1069	})
1070	if len(pops) > 40 {
1071		pops = pops[:40]
1072	}
1073	letters := make([]string, 0, 64)
1074	var lastrune rune = -1
1075	for _, o := range onts {
1076		if r := firstRune(o.Name); r != lastrune {
1077			letters = append(letters, string(r))
1078			lastrune = r
1079		}
1080	}
1081	if u == nil && !develMode {
1082		w.Header().Set("Cache-Control", "max-age=300")
1083	}
1084	templinfo := getInfo(r)
1085	templinfo["Pops"] = pops
1086	templinfo["Onts"] = onts
1087	templinfo["Letters"] = letters
1088	templinfo["FirstRune"] = firstRune
1089	err = readviews.Execute(w, "onts.html", templinfo)
1090	if err != nil {
1091		elog.Print(err)
1092	}
1093}
1094
1095type Track struct {
1096	xid string
1097	who string
1098}
1099
1100func getbacktracks(xid string) []string {
1101	c := make(chan bool)
1102	dumptracks <- c
1103	<-c
1104	row := stmtGetTracks.QueryRow(xid)
1105	var rawtracks string
1106	err := row.Scan(&rawtracks)
1107	if err != nil {
1108		if err != sql.ErrNoRows {
1109			elog.Printf("error scanning tracks: %s", err)
1110		}
1111		return nil
1112	}
1113	var rcpts []string
1114	for _, f := range strings.Split(rawtracks, " ") {
1115		idx := strings.LastIndexByte(f, '#')
1116		if idx != -1 {
1117			f = f[:idx]
1118		}
1119		if !strings.HasPrefix(f, "https://") {
1120			f = fmt.Sprintf("%%https://%s/inbox", f)
1121		}
1122		rcpts = append(rcpts, f)
1123	}
1124	return rcpts
1125}
1126
1127func savetracks(tracks map[string][]string) {
1128	db := opendatabase()
1129	tx, err := db.Begin()
1130	if err != nil {
1131		elog.Printf("savetracks begin error: %s", err)
1132		return
1133	}
1134	defer func() {
1135		err := tx.Commit()
1136		if err != nil {
1137			elog.Printf("savetracks commit error: %s", err)
1138		}
1139
1140	}()
1141	stmtGetTracks, err := tx.Prepare("select fetches from tracks where xid = ?")
1142	if err != nil {
1143		elog.Printf("savetracks error: %s", err)
1144		return
1145	}
1146	stmtNewTracks, err := tx.Prepare("insert into tracks (xid, fetches) values (?, ?)")
1147	if err != nil {
1148		elog.Printf("savetracks error: %s", err)
1149		return
1150	}
1151	stmtUpdateTracks, err := tx.Prepare("update tracks set fetches = ? where xid = ?")
1152	if err != nil {
1153		elog.Printf("savetracks error: %s", err)
1154		return
1155	}
1156	count := 0
1157	for xid, f := range tracks {
1158		count += len(f)
1159		var prev string
1160		row := stmtGetTracks.QueryRow(xid)
1161		err := row.Scan(&prev)
1162		if err == sql.ErrNoRows {
1163			f = oneofakind(f)
1164			stmtNewTracks.Exec(xid, strings.Join(f, " "))
1165		} else if err == nil {
1166			all := append(strings.Split(prev, " "), f...)
1167			all = oneofakind(all)
1168			stmtUpdateTracks.Exec(strings.Join(all, " "))
1169		} else {
1170			elog.Printf("savetracks error: %s", err)
1171		}
1172	}
1173	dlog.Printf("saved %d new fetches", count)
1174}
1175
1176var trackchan = make(chan Track)
1177var dumptracks = make(chan chan bool)
1178
1179func tracker() {
1180	timeout := 4 * time.Minute
1181	sleeper := time.NewTimer(timeout)
1182	tracks := make(map[string][]string)
1183	workinprogress++
1184	for {
1185		select {
1186		case track := <-trackchan:
1187			tracks[track.xid] = append(tracks[track.xid], track.who)
1188		case <-sleeper.C:
1189			if len(tracks) > 0 {
1190				go savetracks(tracks)
1191				tracks = make(map[string][]string)
1192			}
1193			sleeper.Reset(timeout)
1194		case c := <-dumptracks:
1195			if len(tracks) > 0 {
1196				savetracks(tracks)
1197			}
1198			c <- true
1199		case <-endoftheworld:
1200			if len(tracks) > 0 {
1201				savetracks(tracks)
1202			}
1203			readyalready <- true
1204			return
1205		}
1206	}
1207}
1208
1209var re_keyholder = regexp.MustCompile(`keyId="([^"]+)"`)
1210
1211func requestActor(r *http.Request) string {
1212	if sig := r.Header.Get("Signature"); sig != "" {
1213		if m := re_keyholder.FindStringSubmatch(sig); len(m) == 2 {
1214			return m[1]
1215		}
1216	}
1217	return ""
1218}
1219
1220func trackback(xid string, r *http.Request) {
1221	who := requestActor(r)
1222	if who != "" {
1223		trackchan <- Track{xid: xid, who: who}
1224	}
1225}
1226
1227func sameperson(h1, h2 *Honk) bool {
1228	n1, n2 := h1.Honker, h2.Honker
1229	if h1.Oonker != "" {
1230		n1 = h1.Oonker
1231	}
1232	if h2.Oonker != "" {
1233		n2 = h2.Oonker
1234	}
1235	return n1 == n2
1236}
1237
1238func threadposes(honks []*Honk, wanted int64) ([]*Honk, []int) {
1239	var poses []int
1240	var newhonks []*Honk
1241	for i, honk := range honks {
1242		if honk.ID > wanted {
1243			newhonks = append(newhonks, honk)
1244			poses = append(poses, i)
1245		}
1246	}
1247	return newhonks, poses
1248}
1249
1250func threadsort(honks []*Honk) []*Honk {
1251	sort.Slice(honks, func(i, j int) bool {
1252		return honks[i].Date.Before(honks[j].Date)
1253	})
1254	honkx := make(map[string]*Honk, len(honks))
1255	kids := make(map[string][]*Honk, len(honks))
1256	for _, h := range honks {
1257		honkx[h.XID] = h
1258		rid := h.RID
1259		kids[rid] = append(kids[rid], h)
1260	}
1261	done := make(map[*Honk]bool, len(honks))
1262	thread := make([]*Honk, 0, len(honks))
1263	var nextlevel func(p *Honk)
1264	level := 0
1265	nextlevel = func(p *Honk) {
1266		levelup := level < 4
1267		if pp := honkx[p.RID]; p.RID == "" || (pp != nil && sameperson(p, pp)) {
1268			levelup = false
1269		}
1270		if level > 0 && len(kids[p.RID]) == 1 {
1271			if pp := honkx[p.RID]; pp != nil && len(kids[pp.RID]) == 1 {
1272				levelup = false
1273			}
1274		}
1275		if levelup {
1276			level++
1277		}
1278		p.Style += fmt.Sprintf(" level%d", level)
1279		childs := kids[p.XID]
1280		if false {
1281			sort.SliceStable(childs, func(i, j int) bool {
1282				return sameperson(childs[i], p) && !sameperson(childs[j], p)
1283			})
1284		}
1285		if true {
1286			sort.SliceStable(childs, func(i, j int) bool {
1287				return !sameperson(childs[i], p) && sameperson(childs[j], p)
1288			})
1289		}
1290		for _, h := range childs {
1291			if !done[h] {
1292				done[h] = true
1293				thread = append(thread, h)
1294				nextlevel(h)
1295			}
1296		}
1297		if levelup {
1298			level--
1299		}
1300	}
1301	for _, h := range honks {
1302		if !done[h] && h.RID == "" {
1303			done[h] = true
1304			thread = append(thread, h)
1305			nextlevel(h)
1306		}
1307	}
1308	for _, h := range honks {
1309		if !done[h] {
1310			done[h] = true
1311			thread = append(thread, h)
1312			nextlevel(h)
1313		}
1314	}
1315	return thread
1316}
1317
1318func oguser(user *WhatAbout) template.HTML {
1319	short := user.About
1320	if len(short) > 160 {
1321		short = short[0:160] + "..."
1322	}
1323	title := user.Display
1324	imgurl := avatarURL(user)
1325	return templates.Sprintf(
1326		`<meta property="og:title" content="%s" />
1327<meta property="og:type" content="website" />
1328<meta property="og:url" content="%s" />
1329<meta property="og:image" content="%s" />
1330<meta property="og:description" content="%s" />`,
1331		title, user.URL, imgurl, short)
1332}
1333
1334func honkology(honk *Honk) template.HTML {
1335	user, ok := somenumberedusers.Get(honk.UserID)
1336	if !ok {
1337		return ""
1338	}
1339	title := fmt.Sprintf("%s: %s", user.Display, honk.Precis)
1340	imgurl := avatarURL(user)
1341	for _, d := range honk.Donks {
1342		if d.Local && strings.HasPrefix(d.Media, "image") {
1343			imgurl = d.URL
1344			break
1345		}
1346	}
1347	short := honk.Noise
1348	if len(short) > 160 {
1349		short = short[0:160] + "..."
1350	}
1351	return templates.Sprintf(
1352		`<meta property="og:title" content="%s" />
1353<meta property="og:type" content="article" />
1354<meta property="article:author" content="%s" />
1355<meta property="og:url" content="%s" />
1356<meta property="og:image" content="%s" />
1357<meta property="og:description" content="%s" />`,
1358		title, user.URL, honk.XID, imgurl, short)
1359}
1360
1361func showonehonk(w http.ResponseWriter, r *http.Request) {
1362	name := mux.Vars(r)["name"]
1363	user, err := butwhatabout(name)
1364	if err != nil {
1365		http.NotFound(w, r)
1366		return
1367	}
1368	if stealthmode(user.ID, r) {
1369		http.NotFound(w, r)
1370		return
1371	}
1372	wantjson := false
1373	path := r.URL.Path
1374	if strings.HasSuffix(path, ".json") {
1375		path = path[:len(path)-5]
1376		wantjson = true
1377	}
1378	xid := serverURL("%s", path)
1379
1380	if friendorfoe(r.Header.Get("Accept")) || wantjson {
1381		j, ok := gimmejonk(xid)
1382		if ok {
1383			trackback(xid, r)
1384			w.Header().Set("Content-Type", theonetruename)
1385			w.Write(j)
1386		} else {
1387			http.NotFound(w, r)
1388		}
1389		return
1390	}
1391	honk := getxonk(user.ID, xid)
1392	if honk == nil {
1393		http.NotFound(w, r)
1394		return
1395	}
1396	u := login.GetUserInfo(r)
1397	if u != nil && UserID(u.UserID) != user.ID {
1398		u = nil
1399	}
1400	if !honk.Public {
1401		if u == nil {
1402			http.NotFound(w, r)
1403			return
1404
1405		}
1406		honks := []*Honk{honk}
1407		donksforhonks(honks)
1408		templinfo := getInfo(r)
1409		templinfo["ServerMessage"] = "one honk maybe more"
1410		templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
1411		honkpage(w, u, honks, templinfo)
1412		return
1413	}
1414
1415	templinfo := getInfo(r)
1416	rawhonks := gethonksbyconvoy(honk.UserID, honk.Convoy, 0)
1417	//reversehonks(rawhonks)
1418	rawhonks = threadsort(rawhonks)
1419	honks := make([]*Honk, 0, len(rawhonks))
1420	for i, h := range rawhonks {
1421		if h.XID == xid {
1422			templinfo["Honkology"] = honkology(h)
1423			if i > 0 {
1424				h.Style += " glow"
1425			}
1426		}
1427		if h.Public && (h.Whofore == 2 || h.IsAcked()) {
1428			honks = append(honks, h)
1429		}
1430	}
1431
1432	templinfo["ServerMessage"] = "one honk maybe more"
1433	if u != nil {
1434		templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
1435	}
1436	templinfo["APAltLink"] = templates.Sprintf("<link href='%s' rel='alternate' type='application/activity+json'>", xid)
1437	honkpage(w, u, honks, templinfo)
1438}
1439
1440func honkpage(w http.ResponseWriter, u *login.UserInfo, honks []*Honk, templinfo map[string]interface{}) {
1441	var userid UserID = -1
1442	if u != nil {
1443		userid = UserID(u.UserID)
1444		templinfo["User"], _ = butwhatabout(u.Username)
1445	}
1446	reverbolate(userid, honks)
1447	templinfo["Honks"] = honks
1448	templinfo["MapLink"] = getmaplink(u)
1449	if templinfo["TopHID"] == nil {
1450		if len(honks) > 0 {
1451			templinfo["TopHID"] = honks[0].ID
1452		} else {
1453			templinfo["TopHID"] = 0
1454		}
1455	}
1456	if u == nil && !develMode {
1457		w.Header().Set("Cache-Control", "max-age=60")
1458	}
1459	err := readviews.Execute(w, "honkpage.html", templinfo)
1460	if err != nil {
1461		elog.Print(err)
1462	}
1463}
1464
1465func saveuser(w http.ResponseWriter, r *http.Request) {
1466	whatabout := r.FormValue("whatabout")
1467	whatabout = strings.Replace(whatabout, "\r", "", -1)
1468	u := login.GetUserInfo(r)
1469	user, _ := butwhatabout(u.Username)
1470	db := opendatabase()
1471
1472	options := user.Options
1473	options.SkinnyCSS = r.FormValue("skinny") == "skinny"
1474	options.OmitImages = r.FormValue("omitimages") == "omitimages"
1475	options.MentionAll = r.FormValue("mentionall") == "mentionall"
1476	options.InlineQuotes = r.FormValue("inlineqts") == "inlineqts"
1477	options.MapLink = r.FormValue("maps")
1478	options.Reaction = r.FormValue("reaction")
1479
1480	sendupdate := false
1481	if r.FormValue("displayname") != "" {
1482		options.CustomDisplay = r.FormValue("displayname")
1483		_, err := db.Exec("update users set displayname = ? where username = ?", options.CustomDisplay, u.Username)
1484		if err != nil {
1485			elog.Printf("error setting displayname: %s", err)
1486		}
1487		sendupdate = true
1488	} else {
1489		options.CustomDisplay = ""
1490	}
1491
1492	options.Reaction = r.FormValue("reaction")
1493
1494	ava := re_avatar.FindString(whatabout)
1495	if ava != "" {
1496		whatabout = re_avatar.ReplaceAllString(whatabout, "")
1497		ava = ava[7:]
1498		if ava[0] == ' ' {
1499			ava = ava[1:]
1500		}
1501		ava = serverURL("/meme/%s", ava)
1502	}
1503	if ava != options.Avatar {
1504		options.Avatar = ava
1505		sendupdate = true
1506	}
1507	ban := re_banner.FindString(whatabout)
1508	if ban != "" {
1509		whatabout = re_banner.ReplaceAllString(whatabout, "")
1510		ban = ban[7:]
1511		if ban[0] == ' ' {
1512			ban = ban[1:]
1513		}
1514		ban = serverURL("/meme/%s", ban)
1515	}
1516	if ban != options.Banner {
1517		options.Banner = ban
1518		sendupdate = true
1519	}
1520	whatabout = strings.TrimSpace(whatabout)
1521	if whatabout != user.About {
1522		sendupdate = true
1523	}
1524	j, err := jsonify(options)
1525	if err == nil {
1526		_, err = db.Exec("update users set about = ?, options = ? where username = ?", whatabout, j, u.Username)
1527	}
1528	if err != nil {
1529		elog.Printf("error bouting what: %s", err)
1530	}
1531	somenamedusers.Clear(u.Username)
1532	somenumberedusers.Clear(user.ID)
1533	oldjonkers.Clear(u.Username)
1534
1535	if sendupdate {
1536		updateMe(u.Username)
1537	}
1538
1539	http.Redirect(w, r, "/account", http.StatusSeeOther)
1540}
1541
1542func bonkit(xid string, user *WhatAbout) {
1543	dlog.Printf("bonking %s", xid)
1544
1545	xonk := getxonk(user.ID, xid)
1546	if xonk == nil {
1547		return
1548	}
1549	if !xonk.Public {
1550		return
1551	}
1552	if xonk.IsBonked() {
1553		return
1554	}
1555	donksforhonks([]*Honk{xonk})
1556
1557	_, err := stmtUpdateFlags.Exec(flagIsBonked, xonk.ID)
1558	if err != nil {
1559		elog.Printf("error acking bonk: %s", err)
1560	}
1561
1562	oonker := xonk.Oonker
1563	if oonker == "" {
1564		oonker = xonk.Honker
1565	}
1566	dt := time.Now().UTC()
1567	bonk := &Honk{
1568		UserID:   user.ID,
1569		Username: user.Name,
1570		What:     "bonk",
1571		Honker:   user.URL,
1572		Oonker:   oonker,
1573		XID:      xonk.XID,
1574		RID:      xonk.RID,
1575		Noise:    xonk.Noise,
1576		Precis:   xonk.Precis,
1577		URL:      xonk.URL,
1578		Date:     dt,
1579		Donks:    xonk.Donks,
1580		Whofore:  2,
1581		Convoy:   xonk.Convoy,
1582		Audience: []string{thewholeworld, oonker},
1583		Public:   true,
1584		Format:   xonk.Format,
1585		Place:    xonk.Place,
1586		Onts:     xonk.Onts,
1587		Time:     xonk.Time,
1588	}
1589
1590	err = savehonk(bonk)
1591	if err != nil {
1592		elog.Printf("uh oh")
1593		return
1594	}
1595
1596	go honkworldwide(user, bonk)
1597}
1598
1599func submitbonk(w http.ResponseWriter, r *http.Request) {
1600	xid := r.FormValue("xid")
1601	userinfo := login.GetUserInfo(r)
1602	user, _ := butwhatabout(userinfo.Username)
1603
1604	bonkit(xid, user)
1605
1606	if r.FormValue("js") != "1" {
1607		templinfo := getInfo(r)
1608		templinfo["ServerMessage"] = "Bonked!"
1609		err := readviews.Execute(w, "msg.html", templinfo)
1610		if err != nil {
1611			elog.Print(err)
1612		}
1613	}
1614}
1615
1616func sendzonkofsorts(xonk *Honk, user *WhatAbout, what string, aux string) {
1617	zonk := &Honk{
1618		What:     what,
1619		XID:      xonk.XID,
1620		Date:     time.Now().UTC(),
1621		Audience: oneofakind(xonk.Audience),
1622		Noise:    aux,
1623	}
1624	zonk.Public = loudandproud(zonk.Audience)
1625
1626	dlog.Printf("announcing %sed honk: %s", what, xonk.XID)
1627	go honkworldwide(user, zonk)
1628}
1629
1630func zonkit(w http.ResponseWriter, r *http.Request) {
1631	wherefore := r.FormValue("wherefore")
1632	what := r.FormValue("what")
1633	u := login.GetUserInfo(r)
1634	user, _ := butwhatabout(u.Username)
1635
1636	if wherefore == "save" {
1637		xonk := getxonk(user.ID, what)
1638		if xonk != nil {
1639			_, err := stmtUpdateFlags.Exec(flagIsSaved, xonk.ID)
1640			if err != nil {
1641				elog.Printf("error saving: %s", err)
1642			}
1643		}
1644		return
1645	}
1646
1647	if wherefore == "unsave" {
1648		xonk := getxonk(user.ID, what)
1649		if xonk != nil {
1650			_, err := stmtClearFlags.Exec(flagIsSaved, xonk.ID)
1651			if err != nil {
1652				elog.Printf("error unsaving: %s", err)
1653			}
1654		}
1655		return
1656	}
1657
1658	if wherefore == "react" {
1659		reaction := user.Options.Reaction
1660		if r2 := r.FormValue("reaction"); r2 != "" {
1661			reaction = r2
1662		}
1663		if reaction == "none" {
1664			return
1665		}
1666		xonk := getxonk(user.ID, what)
1667		if xonk != nil {
1668			_, err := stmtUpdateFlags.Exec(flagIsReacted, xonk.ID)
1669			if err != nil {
1670				elog.Printf("error saving: %s", err)
1671			}
1672			sendzonkofsorts(xonk, user, "react", reaction)
1673		}
1674		return
1675	}
1676
1677	// my hammer is too big, oh well
1678	defer oldjonks.Flush()
1679
1680	if wherefore == "ack" {
1681		xonk := getxonk(user.ID, what)
1682		if xonk != nil && !xonk.IsAcked() {
1683			_, err := stmtUpdateFlags.Exec(flagIsAcked, xonk.ID)
1684			if err != nil {
1685				elog.Printf("error acking: %s", err)
1686			}
1687			sendzonkofsorts(xonk, user, "ack", "")
1688		}
1689		return
1690	}
1691
1692	if wherefore == "deack" {
1693		xonk := getxonk(user.ID, what)
1694		if xonk != nil && xonk.IsAcked() {
1695			_, err := stmtClearFlags.Exec(flagIsAcked, xonk.ID)
1696			if err != nil {
1697				elog.Printf("error deacking: %s", err)
1698			}
1699			sendzonkofsorts(xonk, user, "deack", "")
1700		}
1701		return
1702	}
1703
1704	if wherefore == "bonk" {
1705		bonkit(what, user)
1706		return
1707	}
1708
1709	if wherefore == "unbonk" {
1710		xonk := getbonk(user.ID, what)
1711		if xonk != nil {
1712			deletehonk(xonk.ID)
1713			xonk = getxonk(user.ID, what)
1714			_, err := stmtClearFlags.Exec(flagIsBonked, xonk.ID)
1715			if err != nil {
1716				elog.Printf("error unbonking: %s", err)
1717			}
1718			sendzonkofsorts(xonk, user, "unbonk", "")
1719		}
1720		return
1721	}
1722
1723	if wherefore == "untag" {
1724		xonk := getxonk(user.ID, what)
1725		if xonk != nil {
1726			_, err := stmtUpdateFlags.Exec(flagIsUntagged, xonk.ID)
1727			if err != nil {
1728				elog.Printf("error untagging: %s", err)
1729			}
1730		}
1731		var badparents map[string]bool
1732		untagged.GetAndLock(user.ID, &badparents)
1733		badparents[what] = true
1734		untagged.Unlock()
1735		return
1736	}
1737
1738	ilog.Printf("zonking %s %s", wherefore, what)
1739	if wherefore == "zonk" {
1740		xonk := getxonk(user.ID, what)
1741		if xonk != nil {
1742			deletehonk(xonk.ID)
1743			if xonk.Whofore == 2 || xonk.Whofore == 3 {
1744				sendzonkofsorts(xonk, user, "zonk", "")
1745			}
1746		}
1747	}
1748	_, err := stmtSaveZonker.Exec(user.ID, what, wherefore)
1749	if err != nil {
1750		elog.Printf("error saving zonker: %s", err)
1751		return
1752	}
1753}
1754
1755func edithonkpage(w http.ResponseWriter, r *http.Request) {
1756	u := login.GetUserInfo(r)
1757	user, _ := butwhatabout(u.Username)
1758	xid := r.FormValue("xid")
1759	honk := getxonk(user.ID, xid)
1760	if !canedithonk(user, honk) {
1761		http.Error(w, "no editing that please", http.StatusInternalServerError)
1762		return
1763	}
1764	noise := honk.Noise
1765
1766	honks := []*Honk{honk}
1767	donksforhonks(honks)
1768	var savedfiles []string
1769	for _, d := range honk.Donks {
1770		savedfiles = append(savedfiles, fmt.Sprintf("%s:%d", d.XID, d.FileID))
1771	}
1772	reverbolate(user.ID, honks)
1773
1774	templinfo := getInfo(r)
1775	templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
1776	templinfo["Honks"] = honks
1777	templinfo["MapLink"] = getmaplink(u)
1778	templinfo["Noise"] = noise
1779	templinfo["SavedPlace"] = honk.Place
1780	if tm := honk.Time; tm != nil {
1781		templinfo["ShowTime"] = " "
1782		templinfo["StartTime"] = tm.StartTime.Format("2006-01-02 15:04")
1783		if tm.Duration != 0 {
1784			templinfo["Duration"] = tm.Duration
1785		}
1786	}
1787	templinfo["Onties"] = honk.Onties
1788	templinfo["SeeAlso"] = honk.SeeAlso
1789	templinfo["Link"] = honk.Link
1790	templinfo["LegalName"] = honk.LegalName
1791	templinfo["ServerMessage"] = "honk edit"
1792	templinfo["IsPreview"] = true
1793	templinfo["UpdateXID"] = honk.XID
1794	if len(savedfiles) > 0 {
1795		templinfo["SavedFile"] = strings.Join(savedfiles, ",")
1796	}
1797	err := readviews.Execute(w, "honkpage.html", templinfo)
1798	if err != nil {
1799		elog.Print(err)
1800	}
1801}
1802
1803func newhonkpage(w http.ResponseWriter, r *http.Request) {
1804	u := login.GetUserInfo(r)
1805	rid := r.FormValue("rid")
1806	noise := ""
1807
1808	xonk := getxonk(UserID(u.UserID), rid)
1809	if xonk != nil {
1810		_, replto := handles(xonk.Honker)
1811		if replto != "" {
1812			noise = "@" + replto + " "
1813		}
1814	}
1815
1816	templinfo := getInfo(r)
1817	templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
1818	templinfo["InReplyTo"] = rid
1819	templinfo["Noise"] = noise
1820	templinfo["ServerMessage"] = "compose honk"
1821	templinfo["IsPreview"] = true
1822	err := readviews.Execute(w, "honkpage.html", templinfo)
1823	if err != nil {
1824		elog.Print(err)
1825	}
1826}
1827
1828func canedithonk(user *WhatAbout, honk *Honk) bool {
1829	if honk == nil || honk.Honker != user.URL || honk.What == "bonk" {
1830		return false
1831	}
1832	return true
1833}
1834
1835func submitdonk(w http.ResponseWriter, r *http.Request) ([]*Donk, error) {
1836	if !strings.HasPrefix(strings.ToLower(r.Header.Get("Content-Type")), "multipart/form-data") {
1837		return nil, nil
1838	}
1839	var donks []*Donk
1840	for i, hdr := range r.MultipartForm.File["donk"] {
1841		if i > 16 {
1842			break
1843		}
1844		donk, err := formtodonk(w, r, hdr)
1845		if err != nil {
1846			return nil, err
1847		}
1848		donks = append(donks, donk)
1849	}
1850	return donks, nil
1851}
1852
1853func formtodonk(w http.ResponseWriter, r *http.Request, filehdr *multipart.FileHeader) (*Donk, error) {
1854	file, err := filehdr.Open()
1855	if err != nil {
1856		if err == http.ErrMissingFile {
1857			return nil, nil
1858		}
1859		elog.Printf("error reading donk: %s", err)
1860		http.Error(w, "error reading donk", http.StatusUnsupportedMediaType)
1861		return nil, err
1862	}
1863	var buf bytes.Buffer
1864	io.Copy(&buf, file)
1865	file.Close()
1866	data := buf.Bytes()
1867	var media, name string
1868	var donkmeta DonkMeta
1869	img, err := bigshrink(data)
1870	if err == nil {
1871		data = img.Data
1872		donkmeta.Width = img.Width
1873		donkmeta.Height = img.Height
1874		format := img.Format
1875		media = "image/" + format
1876		if format == "jpeg" {
1877			format = "jpg"
1878		}
1879		if format == "svg+xml" {
1880			format = "svg"
1881		}
1882		name = xfiltrate() + "." + format
1883	} else {
1884		ct := http.DetectContentType(data)
1885		switch ct {
1886		case "application/pdf":
1887			maxsize := 10000000
1888			if len(data) > maxsize {
1889				ilog.Printf("bad image: %s too much pdf: %d", err, len(data))
1890				http.Error(w, "didn't like your attachment", http.StatusUnsupportedMediaType)
1891				return nil, err
1892			}
1893			media = ct
1894			name = filehdr.Filename
1895			if name == "" {
1896				name = xfiltrate() + ".pdf"
1897			}
1898		default:
1899			maxsize := 100000
1900			if len(data) > maxsize {
1901				ilog.Printf("bad image: %s too much text: %d", err, len(data))
1902				http.Error(w, "didn't like your attachment", http.StatusUnsupportedMediaType)
1903				return nil, err
1904			}
1905			for i := 0; i < len(data); i++ {
1906				if data[i] < 32 && data[i] != '\t' && data[i] != '\r' && data[i] != '\n' {
1907					ilog.Printf("bad image: %s not text: %d", err, data[i])
1908					http.Error(w, "didn't like your attachment", http.StatusUnsupportedMediaType)
1909					return nil, err
1910				}
1911			}
1912			media = "text/plain"
1913			name = filehdr.Filename
1914			if name == "" {
1915				name = xfiltrate() + ".txt"
1916			}
1917		}
1918	}
1919	donkmeta.Length = len(data)
1920	desc := strings.TrimSpace(r.FormValue("donkdesc"))
1921	if desc == "" {
1922		desc = name
1923	}
1924	fileid, xid, err := savefileandxid(name, desc, "", media, true, data, &donkmeta)
1925	if err != nil {
1926		elog.Printf("unable to save image: %s", err)
1927		http.Error(w, "failed to save attachment", http.StatusUnsupportedMediaType)
1928		return nil, err
1929	}
1930	d := &Donk{
1931		FileID: fileid,
1932		XID:    xid,
1933		Desc:   desc,
1934		Local:  true,
1935	}
1936	return d, nil
1937}
1938
1939func websubmithonk(w http.ResponseWriter, r *http.Request) {
1940	h := submithonk(w, r)
1941	if h == nil {
1942		return
1943	}
1944	redir := h.XID[len(serverURL("")):]
1945	http.Redirect(w, r, redir, http.StatusSeeOther)
1946}
1947
1948// what a hot mess this function is
1949func submithonk(w http.ResponseWriter, r *http.Request) *Honk {
1950	rid := r.FormValue("rid")
1951	noise := r.FormValue("noise")
1952	format := r.FormValue("format")
1953	if format == "" {
1954		format = "markdown"
1955	}
1956	if !(format == "markdown" || format == "html") {
1957		http.Error(w, "unknown format", 500)
1958		return nil
1959	}
1960
1961	u := login.GetUserInfo(r)
1962	user, _ := butwhatabout(u.Username)
1963
1964	dt := time.Now().UTC()
1965	updatexid := r.FormValue("updatexid")
1966	var honk *Honk
1967	if updatexid != "" {
1968		honk = getxonk(user.ID, updatexid)
1969		if !canedithonk(user, honk) {
1970			http.Error(w, "no editing that please", http.StatusInternalServerError)
1971			return nil
1972		}
1973		honk.Date = dt
1974		honk.What = "update"
1975		honk.Format = format
1976	} else {
1977		xid := fmt.Sprintf("%s/%s/%s", user.URL, honkSep, xfiltrate())
1978		what := "honk"
1979		honk = &Honk{
1980			UserID:   user.ID,
1981			Username: user.Name,
1982			What:     what,
1983			Honker:   user.URL,
1984			XID:      xid,
1985			Date:     dt,
1986			Format:   format,
1987		}
1988	}
1989	honk.SeeAlso = strings.TrimSpace(r.FormValue("seealso"))
1990	honk.Onties = strings.TrimSpace(r.FormValue("onties"))
1991	honk.Link = strings.TrimSpace(r.FormValue("link"))
1992	honk.LegalName = strings.TrimSpace(r.FormValue("legalname"))
1993
1994	var convoy string
1995	noise = strings.Replace(noise, "\r", "", -1)
1996	if updatexid == "" && rid == "" {
1997		noise = re_convoy.ReplaceAllStringFunc(noise, func(m string) string {
1998			convoy = m[7:]
1999			convoy = strings.TrimSpace(convoy)
2000			if !re_convalidate.MatchString(convoy) {
2001				convoy = ""
2002			}
2003			return ""
2004		})
2005	}
2006	noise = quickrename(noise, user.ID)
2007	honk.Noise = noise
2008	precipitate(honk)
2009	noise = honk.Noise
2010	translate(honk)
2011
2012	if rid != "" {
2013		xonk := getxonk(user.ID, rid)
2014		if xonk == nil {
2015			http.Error(w, "replyto disappeared", http.StatusNotFound)
2016			return nil
2017		}
2018		if xonk.Public {
2019			honk.Audience = append(honk.Audience, xonk.Audience...)
2020		}
2021		convoy = xonk.Convoy
2022		for i, a := range honk.Audience {
2023			if a == thewholeworld {
2024				honk.Audience[0], honk.Audience[i] = honk.Audience[i], honk.Audience[0]
2025				break
2026			}
2027		}
2028		honk.RID = rid
2029		if xonk.Precis != "" && honk.Precis == "" {
2030			honk.Precis = xonk.Precis
2031			if !re_dangerous.MatchString(honk.Precis) {
2032				honk.Precis = "re: " + honk.Precis
2033			}
2034		}
2035	} else if updatexid == "" {
2036		honk.Audience = []string{thewholeworld}
2037	}
2038	if noise != "" && noise[0] == '@' {
2039		honk.Audience = append(grapevine(honk.Mentions), honk.Audience...)
2040	} else {
2041		honk.Audience = append(honk.Audience, grapevine(honk.Mentions)...)
2042	}
2043	honk.Convoy = convoy
2044
2045	if convoy == "" {
2046		convoy = fmt.Sprintf("data:,%s-", masqName) + xfiltrate()
2047		fmt.Println("convoy:", convoy)
2048	}
2049
2050	honk.Convoy = convoy
2051	butnottooloud(honk.Audience)
2052	honk.Audience = oneofakind(honk.Audience)
2053	if len(honk.Audience) == 0 {
2054		ilog.Printf("honk to nowhere")
2055		http.Error(w, "honk to nowhere...", http.StatusNotFound)
2056		return nil
2057	}
2058	honk.Public = loudandproud(honk.Audience)
2059
2060	donkxid := strings.Join(r.Form["donkxid"], ",")
2061	if donkxid == "" {
2062		donks, err := submitdonk(w, r)
2063		if err != nil && err != http.ErrMissingFile {
2064			return nil
2065		}
2066		if len(donks) > 0 {
2067			honk.Donks = append(honk.Donks, donks...)
2068			var xids []string
2069			for _, d := range honk.Donks {
2070				xids = append(xids, fmt.Sprintf("%s:%d", d.XID, d.FileID))
2071			}
2072			donkxid = strings.Join(xids, ",")
2073		}
2074	} else {
2075		xids := strings.Split(donkxid, ",")
2076		for i, xid := range xids {
2077			if i > 16 {
2078				break
2079			}
2080			p := strings.Split(xid, ":")
2081			xid = p[0]
2082			url := serverURL("/d/%s", xid)
2083			var donk *Donk
2084			if len(p) > 1 {
2085				fileid, _ := strconv.ParseInt(p[1], 10, 0)
2086				donk = finddonkid(fileid, url)
2087			} else {
2088				donk = finddonk(url)
2089			}
2090			if donk != nil {
2091				honk.Donks = append(honk.Donks, donk)
2092			} else {
2093				ilog.Printf("can't find file: %s", xid)
2094			}
2095		}
2096	}
2097	memetize(honk)
2098	imaginate(honk)
2099
2100	placename := strings.TrimSpace(r.FormValue("placename"))
2101	placelat := strings.TrimSpace(r.FormValue("placelat"))
2102	placelong := strings.TrimSpace(r.FormValue("placelong"))
2103	placeurl := strings.TrimSpace(r.FormValue("placeurl"))
2104	if placename != "" || placelat != "" || placelong != "" || placeurl != "" {
2105		p := new(Place)
2106		p.Name = placename
2107		p.Latitude, _ = strconv.ParseFloat(placelat, 64)
2108		p.Longitude, _ = strconv.ParseFloat(placelong, 64)
2109		p.Url = placeurl
2110		honk.Place = p
2111	}
2112	timestart := strings.TrimSpace(r.FormValue("timestart"))
2113	if timestart != "" {
2114		t := new(Time)
2115		now := time.Now().Local()
2116		for _, layout := range []string{"2006-01-02 3:04pm", "2006-01-02 15:04", "3:04pm", "15:04"} {
2117			start, err := time.ParseInLocation(layout, timestart, now.Location())
2118			if err == nil {
2119				if start.Year() == 0 {
2120					start = time.Date(now.Year(), now.Month(), now.Day(), start.Hour(), start.Minute(), 0, 0, now.Location())
2121				}
2122				t.StartTime = start
2123				break
2124			}
2125		}
2126		timeend := r.FormValue("timeend")
2127		dur := parseDuration(timeend)
2128		if dur != 0 {
2129			t.Duration = Duration(dur)
2130		}
2131		if !t.StartTime.IsZero() {
2132			honk.What = "event"
2133			honk.Time = t
2134		}
2135	}
2136
2137	if honk.Public {
2138		honk.Whofore = 2
2139	} else {
2140		honk.Whofore = 3
2141	}
2142
2143	// back to markdown
2144	honk.Noise = noise
2145
2146	if r.FormValue("preview") == "preview" {
2147		honks := []*Honk{honk}
2148		reverbolate(user.ID, honks)
2149		templinfo := getInfo(r)
2150		templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
2151		templinfo["Honks"] = honks
2152		templinfo["MapLink"] = getmaplink(u)
2153		templinfo["InReplyTo"] = r.FormValue("rid")
2154		templinfo["Noise"] = r.FormValue("noise")
2155		templinfo["Onties"] = honk.Onties
2156		templinfo["SeeAlso"] = honk.SeeAlso
2157		templinfo["Link"] = honk.Link
2158		templinfo["LegalName"] = honk.LegalName
2159		templinfo["SavedFile"] = donkxid
2160		if tm := honk.Time; tm != nil {
2161			templinfo["ShowTime"] = " "
2162			templinfo["StartTime"] = tm.StartTime.Format("2006-01-02 15:04")
2163			if tm.Duration != 0 {
2164				templinfo["Duration"] = tm.Duration
2165			}
2166		}
2167		templinfo["IsPreview"] = true
2168		templinfo["UpdateXID"] = updatexid
2169		templinfo["ServerMessage"] = "honk preview"
2170		err := readviews.Execute(w, "honkpage.html", templinfo)
2171		if err != nil {
2172			elog.Print(err)
2173		}
2174		return nil
2175	}
2176
2177	if updatexid != "" {
2178		updatehonk(honk)
2179		oldjonks.Clear(honk.XID)
2180	} else {
2181		err := savehonk(honk)
2182		if err != nil {
2183			elog.Printf("uh oh")
2184			return nil
2185		}
2186	}
2187
2188	// reload for consistency
2189	honk.Donks = nil
2190	donksforhonks([]*Honk{honk})
2191
2192	go honkworldwide(user, honk)
2193
2194	return honk
2195}
2196
2197func firstRune(s string) rune { r, _ := utf8.DecodeRuneInString(s); return r }
2198
2199func showhonkers(w http.ResponseWriter, r *http.Request) {
2200	userid := UserID(login.GetUserInfo(r).UserID)
2201	honkers := gethonkers(userid)
2202	letters := make([]string, 0, 64)
2203	var lastrune rune = -1
2204	for _, h := range honkers {
2205		if r := firstRune(h.Name); r != lastrune {
2206			letters = append(letters, string(r))
2207			lastrune = r
2208		}
2209	}
2210	templinfo := getInfo(r)
2211	templinfo["FirstRune"] = firstRune
2212	templinfo["Letters"] = letters
2213	templinfo["Honkers"] = honkers
2214	templinfo["HonkerCSRF"] = login.GetCSRF("submithonker", r)
2215	err := readviews.Execute(w, "honkers.html", templinfo)
2216	if err != nil {
2217		elog.Print(err)
2218	}
2219}
2220
2221func showchatter(w http.ResponseWriter, r *http.Request) {
2222	u := login.GetUserInfo(r)
2223	chatnewnone(UserID(u.UserID))
2224	chatter := loadchatter(UserID(u.UserID))
2225	for _, chat := range chatter {
2226		for _, ch := range chat.Chonks {
2227			filterchonk(ch)
2228		}
2229	}
2230
2231	templinfo := getInfo(r)
2232	templinfo["Chatter"] = chatter
2233	templinfo["ChonkCSRF"] = login.GetCSRF("sendchonk", r)
2234	err := readviews.Execute(w, "chatter.html", templinfo)
2235	if err != nil {
2236		elog.Print(err)
2237	}
2238}
2239
2240func submitchonk(w http.ResponseWriter, r *http.Request) {
2241	u := login.GetUserInfo(r)
2242	user, _ := butwhatabout(u.Username)
2243	noise := r.FormValue("noise")
2244	target := r.FormValue("target")
2245	format := "markdown"
2246	dt := time.Now().UTC()
2247	xid := fmt.Sprintf("%s/%s/%s", user.URL, "chonk", xfiltrate())
2248
2249	if !strings.HasPrefix(target, "https://") {
2250		target = fullname(target, user.ID)
2251	}
2252	if target == "" {
2253		http.Error(w, "who is that?", http.StatusInternalServerError)
2254		return
2255	}
2256	ch := Chonk{
2257		UserID: user.ID,
2258		XID:    xid,
2259		Who:    user.URL,
2260		Target: target,
2261		Date:   dt,
2262		Noise:  noise,
2263		Format: format,
2264	}
2265	donks, err := submitdonk(w, r)
2266	if err != nil && err != http.ErrMissingFile {
2267		return
2268	}
2269	if len(donks) > 0 {
2270		ch.Donks = append(ch.Donks, donks...)
2271	}
2272
2273	translatechonk(&ch)
2274	savechonk(&ch)
2275	// reload for consistency
2276	ch.Donks = nil
2277	donksforchonks([]*Chonk{&ch})
2278	go sendchonk(user, &ch)
2279
2280	http.Redirect(w, r, "/chatter", http.StatusSeeOther)
2281}
2282
2283var combocache = gencache.New(gencache.Options[UserID, []string]{Fill: func(userid UserID) ([]string, bool) {
2284	honkers := gethonkers(userid)
2285	combos := make([]string, 0, len(honkers))
2286	for _, h := range honkers {
2287		combos = append(combos, h.Combos...)
2288	}
2289	for i, c := range combos {
2290		if c == "-" {
2291			combos[i] = ""
2292		}
2293	}
2294	combos = oneofakind(combos)
2295	sort.Strings(combos)
2296	return combos, true
2297}, Invalidator: &honkerinvalidator})
2298
2299func showcombos(w http.ResponseWriter, r *http.Request) {
2300	templinfo := getInfo(r)
2301	err := readviews.Execute(w, "combos.html", templinfo)
2302	if err != nil {
2303		elog.Print(err)
2304	}
2305}
2306
2307func websubmithonker(w http.ResponseWriter, r *http.Request) {
2308	h := submithonker(w, r)
2309	if h == nil {
2310		return
2311	}
2312	http.Redirect(w, r, "/honkers", http.StatusSeeOther)
2313}
2314
2315func submithonker(w http.ResponseWriter, r *http.Request) *Honker {
2316	u := login.GetUserInfo(r)
2317	user, _ := butwhatabout(u.Username)
2318	name := strings.TrimSpace(r.FormValue("name"))
2319	url := strings.TrimSpace(r.FormValue("url"))
2320	peep := r.FormValue("peep")
2321	combos := strings.TrimSpace(r.FormValue("combos"))
2322	combos = " " + combos + " "
2323	honkerid, _ := strconv.ParseInt(r.FormValue("honkerid"), 10, 0)
2324
2325	re_namecheck := regexp.MustCompile("^[\\pL[:digit:]_.-]+$")
2326	if name != "" && !re_namecheck.MatchString(name) {
2327		http.Error(w, "please use a plainer name", http.StatusInternalServerError)
2328		return nil
2329	}
2330
2331	var meta HonkerMeta
2332	meta.Notes = strings.TrimSpace(r.FormValue("notes"))
2333	mj, _ := jsonify(&meta)
2334
2335	defer honkerinvalidator.Clear(user.ID)
2336
2337	// mostly dummy, fill in later...
2338	h := &Honker{
2339		ID: honkerid,
2340	}
2341
2342	if honkerid > 0 {
2343		if r.FormValue("delete") == "delete" {
2344			unfollowyou(user, honkerid, false)
2345			stmtDeleteHonker.Exec(honkerid)
2346			return h
2347		}
2348		if r.FormValue("unsub") == "unsub" {
2349			unfollowyou(user, honkerid, false)
2350		}
2351		if r.FormValue("sub") == "sub" {
2352			followyou(user, honkerid, false)
2353		}
2354		_, err := stmtUpdateHonker.Exec(name, combos, mj, honkerid, user.ID)
2355		if err != nil {
2356			elog.Printf("update honker err: %s", err)
2357			return nil
2358		}
2359		return h
2360	}
2361
2362	if url == "" {
2363		http.Error(w, "subscribing to nothing?", http.StatusInternalServerError)
2364		return nil
2365	}
2366
2367	flavor := "presub"
2368	if peep == "peep" {
2369		flavor = "peep"
2370	}
2371
2372	var err error
2373	honkerid, flavor, err = savehonker(user, url, name, flavor, combos, mj)
2374	if err != nil {
2375		http.Error(w, "had some trouble with that: "+err.Error(), http.StatusInternalServerError)
2376		return nil
2377	}
2378	if flavor == "presub" {
2379		followyou(user, honkerid, false)
2380	}
2381	h.ID = honkerid
2382	return h
2383}
2384
2385func hfcspage(w http.ResponseWriter, r *http.Request) {
2386	u := login.GetUserInfo(r)
2387
2388	filters := getfilters(UserID(u.UserID), filtAny)
2389
2390	templinfo := getInfo(r)
2391	templinfo["Filters"] = filters
2392	templinfo["FilterCSRF"] = login.GetCSRF("filter", r)
2393	err := readviews.Execute(w, "hfcs.html", templinfo)
2394	if err != nil {
2395		elog.Print(err)
2396	}
2397}
2398
2399func accountpage(w http.ResponseWriter, r *http.Request) {
2400	u := login.GetUserInfo(r)
2401	user, _ := butwhatabout(u.Username)
2402	templinfo := getInfo(r)
2403	templinfo["UserCSRF"] = login.GetCSRF("saveuser", r)
2404	templinfo["LogoutCSRF"] = login.GetCSRF("logout", r)
2405	templinfo["User"] = user
2406	about := user.About
2407	if ava := user.Options.Avatar; ava != "" {
2408		about += "\n\navatar: " + ava[strings.LastIndexByte(ava, '/')+1:]
2409	}
2410	if ban := user.Options.Banner; ban != "" {
2411		about += "\n\nbanner: " + ban[strings.LastIndexByte(ban, '/')+1:]
2412	}
2413	templinfo["WhatAbout"] = about
2414	err := readviews.Execute(w, "account.html", templinfo)
2415	if err != nil {
2416		elog.Print(err)
2417	}
2418}
2419
2420func dochpass(w http.ResponseWriter, r *http.Request) {
2421	err := login.ChangePassword(w, r)
2422	if err != nil {
2423		elog.Printf("error changing password: %s", err)
2424	}
2425	http.Redirect(w, r, "/account", http.StatusSeeOther)
2426}
2427
2428var oldfingers = gencache.New(gencache.Options[string, []byte]{Fill: func(orig string) ([]byte, bool) {
2429	if strings.HasPrefix(orig, "acct:") {
2430		orig = orig[5:]
2431	} else {
2432		orig, _ = url.QueryUnescape(orig)
2433	}
2434
2435	name := orig
2436	idx := strings.LastIndexByte(name, '/')
2437	if idx != -1 {
2438		name = name[idx+1:]
2439		url := fmt.Sprintf("https://%s/%s/%s", serverName, "u", name)
2440		if strings.HasPrefix(name, "@") {
2441			url = fmt.Sprintf("https://%s/%s", serverName, name)
2442			name = name[1:]
2443		}
2444		log.Printf("orig: %s url: %s\n", orig, url)
2445		if url != orig {
2446			ilog.Printf("foreign request rejected")
2447			name = ""
2448		}
2449	} else {
2450		idx = strings.IndexByte(name, '@')
2451		if idx != -1 {
2452			name = name[:idx]
2453			if !(name+"@"+serverName == orig || name+"@"+masqName == orig) {
2454				ilog.Printf("foreign request rejected")
2455				name = ""
2456			}
2457		}
2458	}
2459	user, err := butwhatabout(name)
2460	if err != nil {
2461		return nil, false
2462	}
2463
2464	j := junk.New()
2465	pretty := fmt.Sprintf("https://%s/@%s", serverName, name)
2466	j["subject"] = fmt.Sprintf("acct:%s@%s", user.Name, masqName)
2467	j["aliases"] = []string{pretty, user.URL}
2468	l := junk.New()
2469	l["rel"] = "self"
2470	l["type"] = `application/activity+json`
2471	l["href"] = user.URL
2472	j["links"] = []junk.Junk{l}
2473	l2 := junk.New()
2474	l2["rel"] = "http://webfinger.net/rel/profile-page"
2475	l2["type"] = "text/html"
2476	l2["href"] = pretty
2477	l3 := junk.New()
2478	l3["rel"] = "http://webfinger.net/rel/avatar"
2479
2480	ext := filepath.Ext(user.Options.Avatar)
2481	if ext[1:] == "jpg" {
2482		l3["type"] = "image/jpeg"
2483	} else if ext[1:] == "png" {
2484		l3["type"] = "image/png"
2485	}
2486	l3["href"] = user.Options.Avatar
2487	j["links"] = []junk.Junk{l, l2, l3}
2488
2489	return j.ToBytes(), true
2490}})
2491
2492func fingerlicker(w http.ResponseWriter, r *http.Request) {
2493	orig := r.FormValue("resource")
2494
2495	dlog.Printf("finger lick: %s", orig)
2496
2497	j, ok := oldfingers.Get(orig)
2498	if ok {
2499		w.Header().Set("Content-Type", "application/jrd+json")
2500		w.Write(j)
2501	} else {
2502		http.NotFound(w, r)
2503	}
2504}
2505
2506func knowninformation(w http.ResponseWriter, r *http.Request) {
2507	j := junk.New()
2508	l := junk.New()
2509
2510	l["rel"] = `http://nodeinfo.diaspora.software/ns/schema/2.0`
2511	l["href"] = fmt.Sprintf("https://%s/nodeinfo/2.0", serverName)
2512	j["links"] = []junk.Junk{l}
2513
2514	w.Header().Set("Content-Type", "application/json")
2515	j.Write(w)
2516}
2517
2518func actualinformation(w http.ResponseWriter, r *http.Request) {
2519	j := junk.New()
2520
2521	soft := junk.New()
2522	soft["name"] = "honk"
2523	soft["version"] = softwareVersion
2524
2525	services := junk.New()
2526	services["inbound"] = []string{}
2527	services["outbound"] = []string{"rss2.0"}
2528
2529	users := junk.New()
2530	users["total"] = getusercount()
2531	users["activeHalfyear"] = getactiveusercount(6)
2532	users["activeMonth"] = getactiveusercount(1)
2533
2534	usage := junk.New()
2535	usage["users"] = users
2536	usage["localPosts"] = getlocalhonkcount()
2537
2538	j["version"] = "2.0"
2539	j["protocols"] = []string{"activitypub"}
2540	j["software"] = soft
2541	j["services"] = services
2542	j["openRegistrations"] = false
2543	j["usage"] = usage
2544
2545	w.Header().Set("Content-Type", "application/json")
2546	j.Write(w)
2547}
2548
2549func somedays() string {
2550	secs := 432000 + notrand.Int63n(432000)
2551	return fmt.Sprintf("%d", secs)
2552}
2553
2554func isurl(s string) bool {
2555	u, err := url.Parse(s)
2556	return err == nil && u.Scheme != "" && u.Host != ""
2557}
2558
2559func avatateautogen(n string) []byte {
2560	return genAvatar(n)
2561}
2562
2563func avatate(w http.ResponseWriter, r *http.Request) {
2564	if develMode {
2565		loadAvatarColors()
2566	}
2567	var a []byte
2568	n := r.FormValue("a")
2569	uinfo := login.GetUserInfo(r)
2570	a = avatator(n, uinfo)
2571
2572	if !develMode {
2573		w.Header().Set("Cache-Control", "max-age="+somedays())
2574	}
2575
2576	w.Write(a)
2577}
2578
2579func serveviewasset(w http.ResponseWriter, r *http.Request) {
2580	serveasset(w, r, viewDir)
2581}
2582func servedataasset(w http.ResponseWriter, r *http.Request) {
2583	if r.URL.Path == "/favicon.ico" {
2584		r.URL.Path = "/icon.png"
2585	}
2586	serveasset(w, r, dataDir)
2587}
2588
2589func serveasset(w http.ResponseWriter, r *http.Request, basedir string) {
2590	if !develMode {
2591		w.Header().Set("Cache-Control", "max-age=7776000")
2592	}
2593	http.ServeFile(w, r, basedir+"/views"+r.URL.Path)
2594}
2595func servehelp(w http.ResponseWriter, r *http.Request) {
2596	name := mux.Vars(r)["name"]
2597	if !develMode {
2598		w.Header().Set("Cache-Control", "max-age=3600")
2599	}
2600	http.ServeFile(w, r, viewDir+"/docs/"+name)
2601}
2602func servehtml(w http.ResponseWriter, r *http.Request) {
2603	u := login.GetUserInfo(r)
2604	templinfo := getInfo(r)
2605	templinfo["AboutMsg"] = aboutMsg
2606	templinfo["LoginMsg"] = loginMsg
2607	templinfo["HonkVersion"] = softwareVersion
2608	if r.URL.Path == "/about" {
2609		templinfo["Sensors"] = getSensors()
2610	}
2611	if u == nil && !develMode {
2612		w.Header().Set("Cache-Control", "max-age=60")
2613	}
2614	err := readviews.Execute(w, r.URL.Path[1:]+".html", templinfo)
2615	if err != nil {
2616		elog.Print(err)
2617	}
2618}
2619func serveemu(w http.ResponseWriter, r *http.Request) {
2620	emu := mux.Vars(r)["emu"]
2621
2622	w.Header().Set("Cache-Control", "max-age="+somedays())
2623	http.ServeFile(w, r, dataDir+"/emus/"+emu)
2624}
2625func servememe(w http.ResponseWriter, r *http.Request) {
2626	meme := mux.Vars(r)["meme"]
2627
2628	w.Header().Set("Cache-Control", "max-age="+somedays())
2629	_, err := os.Stat(dataDir + "/memes/" + meme)
2630	if err == nil {
2631		http.ServeFile(w, r, dataDir+"/memes/"+meme)
2632	} else {
2633		mux.Vars(r)["xid"] = meme
2634		servefile(w, r)
2635	}
2636}
2637
2638func servefile(w http.ResponseWriter, r *http.Request) {
2639	if friendorfoe(r.Header.Get("Accept")) {
2640		dlog.Printf("incompatible accept for donk")
2641		http.Error(w, "there are no activities here", http.StatusNotAcceptable)
2642		return
2643	}
2644	xid := mux.Vars(r)["xid"]
2645	preview := r.FormValue("preview") == "1"
2646	var media string
2647	var data sql.RawBytes
2648	rows, err := stmtGetFileData.Query(xid)
2649	if err == nil {
2650		defer rows.Close()
2651		rows.Next()
2652		err = rows.Scan(&media, &data)
2653	}
2654	if err != nil {
2655		elog.Printf("error loading file: %s", err)
2656		http.NotFound(w, r)
2657		return
2658	}
2659	if preview && strings.HasPrefix(media, "image") {
2660		img, err := lilshrink(data)
2661		if err == nil {
2662			data = img.Data
2663		}
2664	}
2665	w.Header().Set("Content-Type", media)
2666	w.Header().Set("X-Content-Type-Options", "nosniff")
2667	w.Header().Set("Cache-Control", "max-age="+somedays())
2668	w.Write(data)
2669}
2670
2671func nomoroboto(w http.ResponseWriter, r *http.Request) {
2672	io.WriteString(w, "User-agent: *\n")
2673	io.WriteString(w, "Disallow: /a\n")
2674	io.WriteString(w, "Disallow: /d/\n")
2675	io.WriteString(w, "Disallow: /meme/\n")
2676	io.WriteString(w, "Disallow: /o\n")
2677	io.WriteString(w, "Disallow: /o/\n")
2678	io.WriteString(w, "Disallow: /help/\n")
2679	for _, u := range allusers() {
2680		fmt.Fprintf(w, "Disallow: /%s/%s/%s/\n", userSep, u.Username, honkSep)
2681	}
2682}
2683
2684type Hydration struct {
2685	Tophid    int64
2686	Srvmsg    template.HTML
2687	Honks     string
2688	MeCount   int64
2689	ChatCount int64
2690	Poses     []int
2691}
2692
2693func webhydra(w http.ResponseWriter, r *http.Request) {
2694	u := login.GetUserInfo(r)
2695	userid := UserID(u.UserID)
2696	templinfo := getInfo(r)
2697	templinfo["HonkCSRF"] = login.GetCSRF("honkhonk", r)
2698	page := r.FormValue("page")
2699
2700	wanted, _ := strconv.ParseInt(r.FormValue("tophid"), 10, 0)
2701
2702	var hydra Hydration
2703
2704	var honks []*Honk
2705	switch page {
2706	case "atme":
2707		honks = gethonksforme(userid, wanted)
2708		honks = osmosis(honks, userid, false)
2709		menewnone(userid)
2710		hydra.Srvmsg = "at me!"
2711	case "longago":
2712		honks = gethonksfromlongago(userid, wanted)
2713		honks = osmosis(honks, userid, false)
2714		hydra.Srvmsg = "from long ago"
2715	case "home":
2716		honks = gethonksforuser(userid, wanted)
2717		honks = osmosis(honks, userid, true)
2718		hydra.Srvmsg = serverMsg
2719	case "first":
2720		honks = gethonksforuserfirstclass(userid, wanted)
2721		honks = osmosis(honks, userid, true)
2722		hydra.Srvmsg = "first class only"
2723	case "saved":
2724		honks = getsavedhonks(userid, wanted)
2725		templinfo["PageName"] = "saved"
2726		hydra.Srvmsg = "saved honks"
2727	case "combo":
2728		c := r.FormValue("c")
2729		honks = gethonksbycombo(userid, c, wanted)
2730		honks = osmosis(honks, userid, false)
2731		hydra.Srvmsg = templates.Sprintf("honks by combo: %s", c)
2732	case "convoy":
2733		c := r.FormValue("c")
2734		honks = gethonksbyconvoy(userid, c, 0)
2735		honks = osmosis(honks, userid, false)
2736		honks = threadsort(honks)
2737		honks, hydra.Poses = threadposes(honks, wanted)
2738		hydra.Srvmsg = templates.Sprintf("honks in convoy: %s", c)
2739	case "honker":
2740		xid := r.FormValue("xid")
2741		honks = gethonksbyxonker(userid, xid, wanted)
2742		miniform := templates.Sprintf(`<form action="/submithonker" method="POST">
2743			<input type="hidden" name="CSRF" value="%s">
2744			<input type="hidden" name="url" value="%s">
2745			<button tabindex=1 name="add honker" value="add honker">add honker</button>
2746			</form>`, login.GetCSRF("submithonker", r), xid)
2747		msg := templates.Sprintf(`honks by honker: <a href="%s" ref="noreferrer">%s</a>%s`, xid, xid, miniform)
2748		hydra.Srvmsg = msg
2749	case "user":
2750		uname := r.FormValue("uname")
2751		honks = gethonksbyuser(uname, u != nil && u.Username == uname, wanted)
2752		hydra.Srvmsg = templates.Sprintf("honks by user: %s", uname)
2753	default:
2754		http.NotFound(w, r)
2755	}
2756
2757	if len(honks) > 0 {
2758		if page == "convoy" {
2759			hydra.Tophid = honks[len(honks)-1].ID
2760		} else {
2761			hydra.Tophid = honks[0].ID
2762		}
2763	} else {
2764		hydra.Tophid = wanted
2765	}
2766	reverbolate(userid, honks)
2767
2768	user, _ := butwhatabout(u.Username)
2769
2770	var buf strings.Builder
2771	templinfo["Honks"] = honks
2772	templinfo["MapLink"] = getmaplink(u)
2773	templinfo["User"], _ = butwhatabout(u.Username)
2774	err := readviews.Execute(&buf, "honkfrags.html", templinfo)
2775	if err != nil {
2776		elog.Printf("frag error: %s", err)
2777		return
2778	}
2779	hydra.Honks = buf.String()
2780	hydra.MeCount = user.Options.MeCount
2781	hydra.ChatCount = user.Options.ChatCount
2782	w.Header().Set("Content-Type", "application/json")
2783	j, _ := jsonify(&hydra)
2784	io.WriteString(w, j)
2785}
2786
2787var honkline = make(chan bool)
2788
2789func honkhonkline() {
2790	for {
2791		select {
2792		case honkline <- true:
2793		default:
2794			return
2795		}
2796	}
2797}
2798
2799func apihandler(w http.ResponseWriter, r *http.Request) {
2800	u := login.GetUserInfo(r)
2801	userid := UserID(u.UserID)
2802	action := r.FormValue("action")
2803	wait, _ := strconv.ParseInt(r.FormValue("wait"), 10, 0)
2804	dlog.Printf("api request '%s' on behalf of %s", action, u.Username)
2805	switch action {
2806	case "honk":
2807		h := submithonk(w, r)
2808		if h == nil {
2809			return
2810		}
2811
2812		fmt.Fprintf(w, "%s", h.XID)
2813	case "donk":
2814		donks, err := submitdonk(w, r)
2815		if err != nil {
2816			http.Error(w, err.Error(), http.StatusBadRequest)
2817			return
2818		}
2819		if len(donks) == 0 {
2820			http.Error(w, "missing donk", http.StatusBadRequest)
2821			return
2822		}
2823		d := donks[0]
2824		donkxid := fmt.Sprintf("%s:%d", d.XID, d.FileID)
2825		w.Write([]byte(donkxid))
2826	case "zonkit":
2827		zonkit(w, r)
2828	case "gethonks":
2829		var honks []*Honk
2830		wanted, _ := strconv.ParseInt(r.FormValue("after"), 10, 0)
2831		page := r.FormValue("page")
2832		var waitchan <-chan time.Time
2833	requery:
2834		switch page {
2835		case "atme":
2836			honks = gethonksforme(userid, wanted)
2837			honks = osmosis(honks, userid, false)
2838			menewnone(userid)
2839		case "longago":
2840			honks = gethonksfromlongago(userid, wanted)
2841			honks = osmosis(honks, userid, false)
2842		case "home":
2843			honks = gethonksforuser(userid, wanted)
2844			honks = osmosis(honks, userid, true)
2845		case "myhonks":
2846			honks = gethonksbyuser(u.Username, true, wanted)
2847			honks = osmosis(honks, userid, true)
2848		case "saved":
2849			honks = getsavedhonks(userid, wanted)
2850		case "combo":
2851			c := r.FormValue("c")
2852			honks = gethonksbycombo(userid, c, wanted)
2853			honks = osmosis(honks, userid, false)
2854		case "convoy":
2855			c := r.FormValue("c")
2856			honks = gethonksbyconvoy(userid, c, 0)
2857			honks = osmosis(honks, userid, false)
2858			honks = threadsort(honks)
2859			honks, _ = threadposes(honks, wanted)
2860		case "honker":
2861			xid := r.FormValue("xid")
2862			honks = gethonksbyxonker(userid, xid, wanted)
2863		case "search":
2864			q := r.FormValue("q")
2865			honks = gethonksbysearch(userid, q, wanted)
2866		default:
2867			http.Error(w, "unknown page", http.StatusNotFound)
2868			return
2869		}
2870		if len(honks) == 0 && wait > 0 {
2871			if waitchan == nil {
2872				waitchan = time.After(time.Duration(wait) * time.Second)
2873			}
2874			select {
2875			case <-honkline:
2876				goto requery
2877			case <-waitchan:
2878			}
2879		}
2880		reverbolate(userid, honks)
2881		user, _ := butwhatabout(u.Username)
2882		j := junk.New()
2883		j["honks"] = honks
2884		j["mecount"] = user.Options.MeCount
2885		j["chatcount"] = user.Options.ChatCount
2886		j.Write(w)
2887	case "sendactivity":
2888		public := r.FormValue("public") == "1"
2889		user, _ := butwhatabout(u.Username)
2890		rcpts := boxuprcpts(user, r.Form["rcpt"], public)
2891		msg := []byte(r.FormValue("msg"))
2892		for rcpt := range rcpts {
2893			go deliverate(userid, rcpt, msg)
2894		}
2895	case "gethonkers":
2896		j := junk.New()
2897		j["honkers"] = gethonkers(userid)
2898		j.Write(w)
2899	case "savehonker":
2900		h := submithonker(w, r)
2901		if h == nil {
2902			return
2903		}
2904		fmt.Fprintf(w, "%d", h.ID)
2905	default:
2906		http.Error(w, "unknown action", http.StatusNotFound)
2907		return
2908	}
2909}
2910
2911func fiveoh(w http.ResponseWriter, r *http.Request) {
2912	if !develMode {
2913		return
2914	}
2915	fd, err := os.OpenFile("violations.json", os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
2916	if err != nil {
2917		elog.Printf("error opening violations! %s", err)
2918		return
2919	}
2920	defer fd.Close()
2921	io.Copy(fd, r.Body)
2922	fd.WriteString("\n")
2923}
2924
2925var endoftheworld = make(chan bool)
2926var readyalready = make(chan bool)
2927var workinprogress = 0
2928var requestWG sync.WaitGroup
2929var listenSocket net.Listener
2930
2931func enditall() {
2932	sig := make(chan os.Signal, 1)
2933	signal.Notify(sig, syscall.SIGINT, syscall.SIGTERM, syscall.SIGQUIT)
2934	<-sig
2935	ilog.Printf("stopping...")
2936	listenSocket.Close()
2937	for i := 0; i < workinprogress; i++ {
2938		endoftheworld <- true
2939	}
2940	if *cpuprofile != "" {
2941		pprof.StopCPUProfile()
2942	}
2943	if *memprofile != "" {
2944		pprof.WriteHeapProfile(memprofilefd)
2945		memprofilefd.Close()
2946	}
2947	ilog.Printf("waiting...")
2948	go func() {
2949		time.Sleep(10 * time.Second)
2950		elog.Printf("timed out waiting for requests to finish")
2951		os.Exit(0)
2952	}()
2953	for i := 0; i < workinprogress; i++ {
2954		<-readyalready
2955	}
2956	requestWG.Wait()
2957	ilog.Printf("apocalypse")
2958	closedatabases()
2959	os.Exit(0)
2960}
2961
2962func bgmonitor() {
2963	for {
2964		when := time.Now().Add(-3 * 24 * time.Hour).UTC().Format(dbtimeformat)
2965		_, err := stmtDeleteOldXonkers.Exec("pubkey", when)
2966		if err != nil {
2967			elog.Printf("error deleting old xonkers: %s", err)
2968		}
2969		zaggies.Flush()
2970		time.Sleep(50 * time.Minute)
2971	}
2972}
2973
2974func addcspheaders(next http.Handler) http.Handler {
2975	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
2976		requestWG.Add(1)
2977		defer requestWG.Done()
2978		policy := "default-src 'none'; script-src 'self'; connect-src 'self'; style-src 'self'; img-src 'self'; media-src 'self'"
2979		if develMode {
2980			policy += "; report-uri /csp-violation"
2981		}
2982		w.Header().Set("Content-Security-Policy", policy)
2983		next.ServeHTTP(w, r)
2984	})
2985}
2986
2987func emuinit() {
2988	var emunames []string
2989	dir, err := os.Open(dataDir + "/emus")
2990	if err == nil {
2991		emunames, _ = dir.Readdirnames(0)
2992		dir.Close()
2993	}
2994	allemus = make([]Emu, 0, len(emunames))
2995	for _, e := range emunames {
2996		if len(e) <= 4 {
2997			continue
2998		}
2999		ext := e[len(e)-4:]
3000		emu := Emu{
3001			ID:   fmt.Sprintf("/emu/%s", e),
3002			Name: e[:len(e)-4],
3003			Type: "image/" + ext[1:],
3004		}
3005		allemus = append(allemus, emu)
3006	}
3007	sort.Slice(allemus, func(i, j int) bool {
3008		return allemus[i].Name < allemus[j].Name
3009	})
3010}
3011
3012func redirectPretty(w http.ResponseWriter, r *http.Request) {
3013	last := path.Base(r.URL.Path)
3014	name := mux.Vars(r)["name"]
3015	aturl := "/@" + name
3016
3017	if last == name {
3018		last = ""
3019	}
3020	http.Redirect(w, r, path.Join(aturl, last), http.StatusMovedPermanently)
3021}
3022
3023var savedassetparams = make(map[string]string)
3024
3025func getassetparam(file string) string {
3026	if p, ok := savedassetparams[file]; ok {
3027		return p
3028	}
3029	data, err := os.ReadFile(file)
3030	if err != nil {
3031		return ""
3032	}
3033	hasher := sha512.New()
3034	hasher.Write(data)
3035
3036	return fmt.Sprintf("?v=%.8x", hasher.Sum(nil))
3037}
3038
3039func startWatcher() {
3040	watcher, err := gonix.NewWatcher()
3041	if err != nil {
3042		return
3043	}
3044	go func() {
3045		s := dataDir + "/views/local.css"
3046		for {
3047			err := watcher.WatchFile(s)
3048			if err != nil {
3049				break
3050			}
3051			err = watcher.WaitForChange()
3052			if err != nil {
3053				dlog.Printf("can't wait: %s", err)
3054				break
3055			}
3056			dlog.Printf("local.css changed")
3057			delete(savedassetparams, s)
3058			savedassetparams[s] = getassetparam(s)
3059		}
3060	}()
3061}
3062
3063var usefcgi bool
3064
3065func serve() {
3066	db := opendatabase()
3067	login.Init(login.InitArgs{Db: db, Logger: ilog, Insecure: develMode, SameSiteStrict: !develMode})
3068
3069	listener, err := openListener()
3070	if err != nil {
3071		elog.Fatal(err)
3072	}
3073	runBackendServer()
3074	go enditall()
3075	go redeliverator()
3076	go tracker()
3077	go syndicator()
3078	go bgmonitor()
3079	go qotd()
3080	loadLingo()
3081	emuinit()
3082
3083	var toload []string
3084	dents, _ := os.ReadDir(viewDir + "/views")
3085	for _, dent := range dents {
3086		name := dent.Name()
3087		if strings.HasSuffix(name, ".html") {
3088			toload = append(toload, viewDir+"/views/"+name)
3089		}
3090	}
3091
3092	readviews = templates.Load(develMode, toload...)
3093	if !develMode {
3094		assets := []string{
3095			viewDir + "/views/style.css",
3096			dataDir + "/views/local.css",
3097			viewDir + "/views/honkpage.js",
3098			viewDir + "/views/mecount.js",
3099			viewDir + "/views/misc.js",
3100			dataDir + "/views/local.js",
3101			viewDir + "/views/manifest.webmanifest",
3102			viewDir + "/views/sw.js",
3103		}
3104		for _, s := range assets {
3105			savedassetparams[s] = getassetparam(s)
3106		}
3107		loadAvatarColors()
3108	}
3109	startWatcher()
3110
3111	securitizeweb()
3112
3113	mux := mux.NewRouter()
3114	mux.Use(login.Checker)
3115
3116	mux.Handle("/api", login.TokenRequired(http.HandlerFunc(apihandler)))
3117
3118	posters := mux.Methods("POST").Subrouter()
3119	getters := mux.Methods("GET").Subrouter()
3120
3121	getters.HandleFunc("/", homepage)
3122	getters.HandleFunc("/home", homepage)
3123	getters.HandleFunc("/front", homepage)
3124	getters.HandleFunc("/events", homepage)
3125	getters.HandleFunc("/robots.txt", nomoroboto)
3126	getters.HandleFunc("/rss", showrss)
3127	getters.HandleFunc("/@{name:[\\pL[:digit:]]+}", showuser)
3128	getters.HandleFunc("/@{name:[\\pL[:digit:]]+}.json", showuser)
3129	getters.HandleFunc("/"+userSep+"/{name:[\\pL[:digit:]]+}.json", showuser)
3130	getters.HandleFunc("/"+userSep+"/{name:[\\pL[:digit:]]+}", redirectPretty)
3131	getters.HandleFunc("/"+userSep+"/{name:[\\pL[:digit:]]+}/"+honkSep+"/{xid:[\\pL[:digit:]]+}", showonehonk)
3132	getters.HandleFunc("/"+userSep+"/{name:[\\pL[:digit:]]+}/"+honkSep+"/{xid:[\\pL[:digit:]]+}.json", showonehonk)
3133	getters.HandleFunc("/"+userSep+"/{name:[\\pL[:digit:]]+}/rss", showrss)
3134	posters.HandleFunc("/"+userSep+"/{name:[\\pL[:digit:]]+}/inbox", postinbox)
3135	getters.Handle("/"+userSep+"/{name:[\\pL[:digit:]]+}/inbox", login.TokenRequired(http.HandlerFunc(getinbox)))
3136	getters.HandleFunc("/"+userSep+"/{name:[\\pL[:digit:]]+}/outbox", getoutbox)
3137	posters.Handle("/"+userSep+"/{name:[\\pL[:digit:]]+}/outbox", login.TokenRequired(http.HandlerFunc(postoutbox)))
3138	getters.HandleFunc("/"+userSep+"/{name:[\\pL[:digit:]]+}/followers", emptiness)
3139	getters.HandleFunc("/"+userSep+"/{name:[\\pL[:digit:]]+}/following", emptiness)
3140	getters.HandleFunc("/a", avatate)
3141	getters.HandleFunc("/o", thelistingoftheontologies)
3142	getters.HandleFunc("/o/{name:.+}", showontology)
3143	getters.HandleFunc("/d/{xid:[\\pL[:digit:].]+}", servefile)
3144	getters.HandleFunc("/emu/{emu:[^.]*[^/]+}", serveemu)
3145	getters.HandleFunc("/meme/{meme:[^.]*[^/]+}", servememe)
3146	getters.HandleFunc("/.well-known/webfinger", fingerlicker)
3147	getters.HandleFunc("/.well-known/nodeinfo", knowninformation)
3148	getters.HandleFunc("/nodeinfo/2.0", actualinformation)
3149
3150	getters.HandleFunc("/flag/{code:.+}", showflag)
3151
3152	getters.HandleFunc("/server", serveractor)
3153	posters.HandleFunc("/server/inbox", serverinbox)
3154	posters.HandleFunc("/inbox", serverinbox)
3155
3156	posters.HandleFunc("/csp-violation", fiveoh)
3157
3158	getters.HandleFunc("/style.css", serveviewasset)
3159	getters.HandleFunc("/sw.js", serveviewasset)
3160	getters.HandleFunc("/honkpage.js", serveviewasset)
3161	getters.HandleFunc("/mecount.js", serveviewasset)
3162	getters.HandleFunc("/misc.js", serveviewasset)
3163	getters.HandleFunc("/local.css", servedataasset)
3164	getters.HandleFunc("/local.js", servedataasset)
3165	getters.HandleFunc("/icon.png", servedataasset)
3166	getters.HandleFunc("/favicon.ico", servedataasset)
3167	getters.HandleFunc("/manifest.webmanifest", serveviewasset)
3168
3169	getters.HandleFunc("/about", servehtml)
3170	getters.HandleFunc("/login", servehtml)
3171	posters.HandleFunc("/dologin", login.LoginFunc)
3172	getters.HandleFunc("/logout", login.LogoutFunc)
3173	getters.HandleFunc("/help/{name:[\\pL[:digit:]_.-]+}", servehelp)
3174
3175	loggedin := mux.NewRoute().Subrouter()
3176	loggedin.Use(login.Required)
3177	loggedin.HandleFunc("/first", homepage)
3178	loggedin.HandleFunc("/chatter", showchatter)
3179	loggedin.Handle("/sendchonk", login.CSRFWrap("sendchonk", http.HandlerFunc(submitchonk)))
3180	loggedin.HandleFunc("/saved", homepage)
3181	loggedin.HandleFunc("/account", accountpage)
3182	loggedin.HandleFunc("/funzone", showfunzone)
3183	loggedin.HandleFunc("/chpass", dochpass)
3184	loggedin.HandleFunc("/atme", homepage)
3185	loggedin.HandleFunc("/longago", homepage)
3186	loggedin.HandleFunc("/hfcs", hfcspage)
3187	loggedin.HandleFunc("/xzone", xzone)
3188	loggedin.HandleFunc("/newhonk", newhonkpage)
3189	loggedin.HandleFunc("/edit", edithonkpage)
3190	loggedin.Handle("/honk", login.CSRFWrap("honkhonk", http.HandlerFunc(websubmithonk)))
3191	loggedin.Handle("/bonk", login.CSRFWrap("honkhonk", http.HandlerFunc(submitbonk)))
3192	loggedin.Handle("/zonkit", login.CSRFWrap("honkhonk", http.HandlerFunc(zonkit)))
3193	loggedin.Handle("/savehfcs", login.CSRFWrap("filter", http.HandlerFunc(savehfcs)))
3194	loggedin.Handle("/saveuser", login.CSRFWrap("saveuser", http.HandlerFunc(saveuser)))
3195	loggedin.Handle("/ximport", login.CSRFWrap("ximport", http.HandlerFunc(ximport)))
3196	loggedin.HandleFunc("/honkers", showhonkers)
3197	loggedin.HandleFunc("/h/{name:[\\pL[:digit:]_.-]+}", showhonker)
3198	loggedin.HandleFunc("/h", showhonker)
3199	loggedin.HandleFunc("/c/{name:[\\pL[:digit:]#_.-]+}", showcombo)
3200	loggedin.HandleFunc("/c", showcombos)
3201	loggedin.HandleFunc("/t", showconvoy)
3202	loggedin.HandleFunc("/q", showsearch)
3203	loggedin.HandleFunc("/hydra", webhydra)
3204	loggedin.HandleFunc("/emus", showemus)
3205	loggedin.Handle("/submithonker", login.CSRFWrap("submithonker", http.HandlerFunc(websubmithonker)))
3206
3207	// mastoshit
3208	mastopost := mux.Methods("POST").Subrouter()
3209	mastoget := mux.Methods("GET").Subrouter()
3210
3211	mastoget.HandleFunc("/oauth/authorize", showoauthlogin)
3212	mastopost.HandleFunc("/oauth/authorize", oauthorize)
3213	mastopost.HandleFunc("/oauth/token", oauthtoken)
3214	mastoget.HandleFunc("/api/v1/instance", instance)
3215	mastopost.HandleFunc("/api/v1/apps", apiapps)
3216	mastoget.HandleFunc("/api/v1/accounts/verify_credentials", checktoken(verifycreds))
3217	mastoget.HandleFunc("/api/v1/timelines/home", checktoken(hometimeline))
3218
3219	loggedmux := handlers.LoggingHandler(os.Stdout, mux)
3220	err = http.Serve(listener, loggedmux)
3221	if err != nil {
3222		elog.Fatal(err)
3223	}
3224	if usefcgi {
3225		err = fcgi.Serve(listener, mux)
3226	} else {
3227		err = http.Serve(listener, mux)
3228	}
3229	if err != nil && !errors.Is(err, net.ErrClosed) {
3230		elog.Printf("serve error: %s", err)
3231	}
3232	time.Sleep(15 * time.Second)
3233	elog.Printf("fell off the bottom")
3234}
3235
3236// Verifies that accesstoken is valid and injects the associated
3237// MastoApp in the request context
3238func checktoken(h http.HandlerFunc) http.HandlerFunc {
3239	return func(w http.ResponseWriter, r *http.Request) {
3240		authHeader := r.Header.Get("Authorization")
3241		split := strings.Split(authHeader, "Bearer")
3242		if len(split) != 2 {
3243			elog.Println("masto: bad access token format or lack thereof")
3244			w.WriteHeader(http.StatusBadRequest)
3245			return
3246		}
3247
3248		token := strings.ReplaceAll(split[1], " ", "")
3249		app := getMastoAppFromAccessToken(token)
3250		if app == nil {
3251			elog.Println("masto: invalid access token")
3252			w.WriteHeader(http.StatusUnauthorized)
3253			return
3254		}
3255
3256		fmt.Printf("logged in! app: %s\n", app.Name)
3257
3258		ctx := context.WithValue(r.Context(), "app", app)
3259		r = r.WithContext(ctx)
3260		h(w, r)
3261	}
3262}