activity.go (view raw)
1//
2// Copyright (c) 2019 Ted Unangst <tedu@tedunangst.com>
3//
4// Permission to use, copy, modify, and distribute this software for any
5// purpose with or without fee is hereby granted, provided that the above
6// copyright notice and this permission notice appear in all copies.
7//
8// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15
16package main
17
18import (
19 "bytes"
20 "crypto/rsa"
21 "database/sql"
22 "fmt"
23 "html"
24 "io"
25 "log"
26 notrand "math/rand"
27 "net/http"
28 "net/url"
29 "os"
30 "regexp"
31 "strings"
32 "sync"
33 "time"
34
35 "humungus.tedunangst.com/r/webs/cache"
36 "humungus.tedunangst.com/r/webs/httpsig"
37 "humungus.tedunangst.com/r/webs/image"
38 "humungus.tedunangst.com/r/webs/junk"
39)
40
41var theonetruename = `application/ld+json; profile="https://www.w3.org/ns/activitystreams"`
42var thefakename = `application/activity+json`
43var falsenames = []string{
44 `application/ld+json`,
45 `application/activity+json`,
46}
47var itiswhatitis = "https://www.w3.org/ns/activitystreams"
48var thewholeworld = "https://www.w3.org/ns/activitystreams#Public"
49
50func friendorfoe(ct string) bool {
51 ct = strings.ToLower(ct)
52 for _, at := range falsenames {
53 if strings.HasPrefix(ct, at) {
54 return true
55 }
56 }
57 return false
58}
59
60func PostJunk(keyname string, key *rsa.PrivateKey, url string, j junk.Junk) error {
61 return PostMsg(keyname, key, url, j.ToBytes())
62}
63
64func PostMsg(keyname string, key *rsa.PrivateKey, url string, msg []byte) error {
65 client := http.DefaultClient
66 req, err := http.NewRequest("POST", url, bytes.NewReader(msg))
67 if err != nil {
68 return err
69 }
70 req.Header.Set("User-Agent", "honksnonk/5.0; "+serverName)
71 req.Header.Set("Content-Type", theonetruename)
72 httpsig.SignRequest(keyname, key, req, msg)
73 resp, err := client.Do(req)
74 if err != nil {
75 return err
76 }
77 resp.Body.Close()
78 switch resp.StatusCode {
79 case 200:
80 case 201:
81 case 202:
82 default:
83 return fmt.Errorf("http post status: %d", resp.StatusCode)
84 }
85 log.Printf("successful post: %s %d", url, resp.StatusCode)
86 return nil
87}
88
89type JunkError struct {
90 Junk junk.Junk
91 Err error
92}
93
94func GetJunk(url string) (junk.Junk, error) {
95 return GetJunkTimeout(url, 30*time.Second)
96}
97
98func GetJunkFast(url string) (junk.Junk, error) {
99 return GetJunkTimeout(url, 5*time.Second)
100}
101
102func GetJunkHardMode(url string) (junk.Junk, error) {
103 j, err := GetJunk(url)
104 if err != nil {
105 emsg := err.Error()
106 if emsg == "http get status: 502" || strings.Contains(emsg, "timeout") {
107 log.Printf("trying again after error: %s", emsg)
108 time.Sleep(time.Duration(60+notrand.Int63n(60)) * time.Second)
109 j, err = GetJunk(url)
110 if err != nil {
111 log.Printf("still couldn't get it")
112 } else {
113 log.Printf("retry success!")
114 }
115 }
116 }
117 return j, err
118}
119
120var flightdeck = make(map[string][]chan JunkError)
121var decklock sync.Mutex
122
123func GetJunkTimeout(url string, timeout time.Duration) (junk.Junk, error) {
124 decklock.Lock()
125 inflight, ok := flightdeck[url]
126 if ok {
127 log.Printf("awaiting result for %s", url)
128 c := make(chan JunkError)
129 flightdeck[url] = append(inflight, c)
130 decklock.Unlock()
131 je := <-c
132 close(c)
133 return je.Junk, je.Err
134 }
135 flightdeck[url] = inflight
136 decklock.Unlock()
137
138 at := thefakename
139 if strings.Contains(url, ".well-known/webfinger?resource") {
140 at = "application/jrd+json"
141 }
142 j, err := junk.Get(url, junk.GetArgs{
143 Accept: at,
144 Agent: "honksnonk/5.0; " + serverName,
145 Timeout: timeout,
146 })
147
148 decklock.Lock()
149 inflight = flightdeck[url]
150 delete(flightdeck, url)
151 decklock.Unlock()
152 if len(inflight) > 0 {
153 je := JunkError{Junk: j, Err: err}
154 go func() {
155 for _, c := range inflight {
156 log.Printf("returning awaited result for %s", url)
157 c <- je
158 }
159 }()
160 }
161 return j, err
162}
163
164func savedonk(url string, name, desc, media string, localize bool) *Donk {
165 if url == "" {
166 return nil
167 }
168 donk := finddonk(url)
169 if donk != nil {
170 return donk
171 }
172 donk = new(Donk)
173 log.Printf("saving donk: %s", url)
174 xid := xfiltrate()
175 data := []byte{}
176 if localize {
177 resp, err := http.Get(url)
178 if err != nil {
179 log.Printf("error fetching %s: %s", url, err)
180 localize = false
181 goto saveit
182 }
183 defer resp.Body.Close()
184 if resp.StatusCode != 200 {
185 localize = false
186 goto saveit
187 }
188 var buf bytes.Buffer
189 limiter := io.LimitReader(resp.Body, 10*1024*1024)
190 io.Copy(&buf, limiter)
191
192 data = buf.Bytes()
193 if len(data) == 10*1024*1024 {
194 log.Printf("truncation likely")
195 }
196 if strings.HasPrefix(media, "image") {
197 img, err := image.Vacuum(&buf,
198 image.Params{LimitSize: 4200 * 4200, MaxWidth: 2048, MaxHeight: 2048})
199 if err != nil {
200 log.Printf("unable to decode image: %s", err)
201 localize = false
202 data = []byte{}
203 goto saveit
204 }
205 data = img.Data
206 format := img.Format
207 media = "image/" + format
208 if format == "jpeg" {
209 format = "jpg"
210 }
211 xid = xid + "." + format
212 } else if len(data) > 100000 {
213 log.Printf("not saving large attachment")
214 localize = false
215 data = []byte{}
216 }
217 }
218saveit:
219 fileid, err := savefile(xid, name, desc, url, media, localize, data)
220 if err != nil {
221 log.Printf("error saving file %s: %s", url, err)
222 return nil
223 }
224 donk.FileID = fileid
225 donk.XID = xid
226 return donk
227}
228
229func iszonked(userid int64, xid string) bool {
230 row := stmtFindZonk.QueryRow(userid, xid)
231 var id int64
232 err := row.Scan(&id)
233 if err == nil {
234 return true
235 }
236 if err != sql.ErrNoRows {
237 log.Printf("error querying zonk: %s", err)
238 }
239 return false
240}
241
242func needxonk(user *WhatAbout, x *Honk) bool {
243 if rejectxonk(x) {
244 return false
245 }
246 return needxonkid(user, x.XID)
247}
248func needxonkid(user *WhatAbout, xid string) bool {
249 if strings.HasPrefix(xid, user.URL+"/") {
250 return false
251 }
252 if rejectorigin(user.ID, xid) {
253 return false
254 }
255 if iszonked(user.ID, xid) {
256 log.Printf("already zonked: %s", xid)
257 return false
258 }
259 row := stmtFindXonk.QueryRow(user.ID, xid)
260 var id int64
261 err := row.Scan(&id)
262 if err == nil {
263 return false
264 }
265 if err != sql.ErrNoRows {
266 log.Printf("error querying xonk: %s", err)
267 }
268 return true
269}
270
271func eradicatexonk(userid int64, xid string) {
272 xonk := getxonk(userid, xid)
273 if xonk != nil {
274 deletehonk(xonk.ID)
275 }
276 _, err := stmtSaveZonker.Exec(userid, xid, "zonk")
277 if err != nil {
278 log.Printf("error eradicating: %s", err)
279 }
280}
281
282func savexonk(x *Honk) {
283 log.Printf("saving xonk: %s", x.XID)
284 go prehandle(x.Honker)
285 go prehandle(x.Oonker)
286 savehonk(x)
287}
288
289type Box struct {
290 In string
291 Out string
292 Shared string
293}
294
295var boxofboxes = cache.New(cache.Options{Filler: func(ident string) (*Box, bool) {
296 var info string
297 row := stmtGetXonker.QueryRow(ident, "boxes")
298 err := row.Scan(&info)
299 if err == nil {
300 m := strings.Split(info, " ")
301 b := &Box{In: m[0], Out: m[1], Shared: m[2]}
302 return b, true
303 }
304 j, err := GetJunk(ident)
305 if err != nil {
306 log.Printf("error getting boxes: %s", err)
307 return nil, false
308 }
309 inbox, _ := j.GetString("inbox")
310 outbox, _ := j.GetString("outbox")
311 sbox, _ := j.GetString("endpoints", "sharedInbox")
312 b := &Box{In: inbox, Out: outbox, Shared: sbox}
313 if inbox != "" {
314 m := strings.Join([]string{inbox, outbox, sbox}, " ")
315 _, err = stmtSaveXonker.Exec(ident, m, "boxes")
316 if err != nil {
317 log.Printf("error saving boxes: %s", err)
318 }
319 }
320 return b, true
321}})
322
323func gimmexonks(user *WhatAbout, outbox string) {
324 log.Printf("getting outbox: %s", outbox)
325 j, err := GetJunk(outbox)
326 if err != nil {
327 log.Printf("error getting outbox: %s", err)
328 return
329 }
330 t, _ := j.GetString("type")
331 origin := originate(outbox)
332 if t == "OrderedCollection" {
333 items, _ := j.GetArray("orderedItems")
334 if items == nil {
335 items, _ = j.GetArray("items")
336 }
337 if items == nil {
338 obj, ok := j.GetMap("first")
339 if ok {
340 items, _ = obj.GetArray("orderedItems")
341 } else {
342 page1, ok := j.GetString("first")
343 if ok {
344 j, err = GetJunk(page1)
345 if err != nil {
346 log.Printf("error gettings page1: %s", err)
347 return
348 }
349 items, _ = j.GetArray("orderedItems")
350 }
351 }
352 }
353 if len(items) > 20 {
354 items = items[0:20]
355 }
356 for i, j := 0, len(items)-1; i < j; i, j = i+1, j-1 {
357 items[i], items[j] = items[j], items[i]
358 }
359 for _, item := range items {
360 obj, ok := item.(junk.Junk)
361 if !ok {
362 continue
363 }
364 xonksaver(user, obj, origin)
365 }
366 }
367}
368
369func whosthere(xid string) ([]string, string) {
370 obj, err := GetJunk(xid)
371 if err != nil {
372 log.Printf("error getting remote xonk: %s", err)
373 return nil, ""
374 }
375 convoy, _ := obj.GetString("context")
376 if convoy == "" {
377 convoy, _ = obj.GetString("conversation")
378 }
379 return newphone(nil, obj), convoy
380}
381
382func newphone(a []string, obj junk.Junk) []string {
383 for _, addr := range []string{"to", "cc", "attributedTo"} {
384 who, _ := obj.GetString(addr)
385 if who != "" {
386 a = append(a, who)
387 }
388 whos, _ := obj.GetArray(addr)
389 for _, w := range whos {
390 who, _ := w.(string)
391 if who != "" {
392 a = append(a, who)
393 }
394 }
395 }
396 return a
397}
398
399func extractattrto(obj junk.Junk) string {
400 who, _ := obj.GetString("attributedTo")
401 if who != "" {
402 return who
403 }
404 o, ok := obj.GetMap("attributedTo")
405 if ok {
406 id, ok := o.GetString("id")
407 if ok {
408 return id
409 }
410 }
411 arr, _ := obj.GetArray("attributedTo")
412 for _, a := range arr {
413 o, ok := a.(junk.Junk)
414 if ok {
415 t, _ := o.GetString("type")
416 id, _ := o.GetString("id")
417 if t == "Person" || t == "" {
418 return id
419 }
420 }
421 s, ok := a.(string)
422 if ok {
423 return s
424 }
425 }
426 return ""
427}
428
429func xonksaver(user *WhatAbout, item junk.Junk, origin string) *Honk {
430 depth := 0
431 maxdepth := 10
432 currenttid := ""
433 goingup := 0
434 var xonkxonkfn func(item junk.Junk, origin string) *Honk
435
436 saveonemore := func(xid string) {
437 log.Printf("getting onemore: %s", xid)
438 if depth >= maxdepth {
439 log.Printf("in too deep")
440 return
441 }
442 obj, err := GetJunkHardMode(xid)
443 if err != nil {
444 log.Printf("error getting onemore: %s: %s", xid, err)
445 return
446 }
447 depth++
448 xonkxonkfn(obj, originate(xid))
449 depth--
450 }
451
452 xonkxonkfn = func(item junk.Junk, origin string) *Honk {
453 // id, _ := item.GetString( "id")
454 what, _ := item.GetString("type")
455 dt, _ := item.GetString("published")
456
457 var err error
458 var xid, rid, url, content, precis, convoy string
459 var replies []string
460 var obj junk.Junk
461 var ok bool
462 isUpdate := false
463 switch what {
464 case "Delete":
465 obj, ok = item.GetMap("object")
466 if ok {
467 xid, _ = obj.GetString("id")
468 } else {
469 xid, _ = item.GetString("object")
470 }
471 if xid == "" {
472 return nil
473 }
474 if originate(xid) != origin {
475 log.Printf("forged delete: %s", xid)
476 return nil
477 }
478 log.Printf("eradicating %s", xid)
479 eradicatexonk(user.ID, xid)
480 return nil
481 case "Tombstone":
482 xid, _ = item.GetString("id")
483 if xid == "" {
484 return nil
485 }
486 if originate(xid) != origin {
487 log.Printf("forged delete: %s", xid)
488 return nil
489 }
490 log.Printf("eradicating %s", xid)
491 eradicatexonk(user.ID, xid)
492 return nil
493 case "Announce":
494 obj, ok = item.GetMap("object")
495 if ok {
496 xid, _ = obj.GetString("id")
497 } else {
498 xid, _ = item.GetString("object")
499 }
500 if !needxonkid(user, xid) {
501 return nil
502 }
503 log.Printf("getting bonk: %s", xid)
504 obj, err = GetJunkHardMode(xid)
505 if err != nil {
506 log.Printf("error getting bonk: %s: %s", xid, err)
507 }
508 origin = originate(xid)
509 what = "bonk"
510 case "Update":
511 isUpdate = true
512 fallthrough
513 case "Create":
514 obj, ok = item.GetMap("object")
515 if !ok {
516 xid, _ = item.GetString("object")
517 log.Printf("getting created honk: %s", xid)
518 obj, err = GetJunkHardMode(xid)
519 if err != nil {
520 log.Printf("error getting creation: %s", err)
521 }
522 }
523 what = "honk"
524 if obj != nil {
525 t, _ := obj.GetString("type")
526 switch t {
527 case "Event":
528 what = "event"
529 }
530 }
531 case "Read":
532 xid, ok = item.GetString("object")
533 if ok {
534 if !needxonkid(user, xid) {
535 log.Printf("don't need read obj: %s", xid)
536 return nil
537 }
538 obj, err = GetJunkHardMode(xid)
539 if err != nil {
540 log.Printf("error getting read: %s", err)
541 return nil
542 }
543 return xonkxonkfn(obj, originate(xid))
544 }
545 return nil
546 case "Audio":
547 fallthrough
548 case "Video":
549 fallthrough
550 case "Question":
551 fallthrough
552 case "Note":
553 fallthrough
554 case "Article":
555 fallthrough
556 case "Page":
557 obj = item
558 what = "honk"
559 case "Event":
560 obj = item
561 what = "event"
562 default:
563 log.Printf("unknown activity: %s", what)
564 fd, _ := os.OpenFile("savedinbox.json", os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
565 item.Write(fd)
566 io.WriteString(fd, "\n")
567 fd.Close()
568 return nil
569 }
570
571 if obj != nil {
572 _, ok := obj.GetString("diaspora:guid")
573 if ok {
574 // friendica does the silliest bonks
575 c, ok := obj.GetString("source", "content")
576 if ok {
577 re_link := regexp.MustCompile(`link='([^']*)'`)
578 m := re_link.FindStringSubmatch(c)
579 if len(m) > 1 {
580 xid := m[1]
581 log.Printf("getting friendica flavored bonk: %s", xid)
582 if !needxonkid(user, xid) {
583 return nil
584 }
585 newobj, err := GetJunkHardMode(xid)
586 if err != nil {
587 log.Printf("error getting bonk: %s: %s", xid, err)
588 } else {
589 obj = newobj
590 origin = originate(xid)
591 what = "bonk"
592 }
593 }
594 }
595 }
596 }
597
598 var xonk Honk
599 // early init
600 xonk.UserID = user.ID
601 xonk.Honker, _ = item.GetString("actor")
602 if xonk.Honker == "" {
603 xonk.Honker, _ = item.GetString("attributedTo")
604 }
605 if obj != nil {
606 if xonk.Honker == "" {
607 xonk.Honker = extractattrto(obj)
608 }
609 xonk.Oonker = extractattrto(obj)
610 if xonk.Oonker == xonk.Honker {
611 xonk.Oonker = ""
612 }
613 xonk.Audience = newphone(nil, obj)
614 }
615 xonk.Audience = append(xonk.Audience, xonk.Honker)
616 xonk.Audience = oneofakind(xonk.Audience)
617
618 var mentions []string
619 if obj != nil {
620 ot, _ := obj.GetString("type")
621 url, _ = obj.GetString("url")
622 dt2, ok := obj.GetString("published")
623 if ok {
624 dt = dt2
625 }
626 xid, _ = obj.GetString("id")
627 precis, _ = obj.GetString("summary")
628 if precis == "" {
629 precis, _ = obj.GetString("name")
630 }
631 content, _ = obj.GetString("content")
632 if !strings.HasPrefix(content, "<p>") {
633 content = "<p>" + content
634 }
635 sens, _ := obj["sensitive"].(bool)
636 if sens && precis == "" {
637 precis = "unspecified horror"
638 }
639 rid, ok = obj.GetString("inReplyTo")
640 if !ok {
641 robj, ok := obj.GetMap("inReplyTo")
642 if ok {
643 rid, _ = robj.GetString("id")
644 }
645 }
646 convoy, _ = obj.GetString("context")
647 if convoy == "" {
648 convoy, _ = obj.GetString("conversation")
649 }
650 if ot == "Question" {
651 if what == "honk" {
652 what = "qonk"
653 }
654 content += "<ul>"
655 ans, _ := obj.GetArray("oneOf")
656 for _, ai := range ans {
657 a, ok := ai.(junk.Junk)
658 if !ok {
659 continue
660 }
661 as, _ := a.GetString("name")
662 content += "<li>" + as
663 }
664 ans, _ = obj.GetArray("anyOf")
665 for _, ai := range ans {
666 a, ok := ai.(junk.Junk)
667 if !ok {
668 continue
669 }
670 as, _ := a.GetString("name")
671 content += "<li>" + as
672 }
673 content += "</ul>"
674 }
675 if what == "honk" && rid != "" {
676 what = "tonk"
677 }
678 atts, _ := obj.GetArray("attachment")
679 for i, atti := range atts {
680 att, ok := atti.(junk.Junk)
681 if !ok {
682 continue
683 }
684 at, _ := att.GetString("type")
685 mt, _ := att.GetString("mediaType")
686 u, _ := att.GetString("url")
687 name, _ := att.GetString("name")
688 desc, _ := att.GetString("summary")
689 if desc == "" {
690 desc = name
691 }
692 localize := false
693 if i > 4 {
694 log.Printf("excessive attachment: %s", at)
695 } else if at == "Document" || at == "Image" {
696 mt = strings.ToLower(mt)
697 log.Printf("attachment: %s %s", mt, u)
698 if mt == "text/plain" || strings.HasPrefix(mt, "image") {
699 localize = true
700 }
701 } else {
702 log.Printf("unknown attachment: %s", at)
703 }
704 if skipMedia(&xonk) {
705 localize = false
706 }
707 donk := savedonk(u, name, desc, mt, localize)
708 if donk != nil {
709 xonk.Donks = append(xonk.Donks, donk)
710 }
711 }
712 tags, _ := obj.GetArray("tag")
713 for _, tagi := range tags {
714 tag, ok := tagi.(junk.Junk)
715 if !ok {
716 continue
717 }
718 tt, _ := tag.GetString("type")
719 name, _ := tag.GetString("name")
720 desc, _ := tag.GetString("summary")
721 if desc == "" {
722 desc = name
723 }
724 if tt == "Emoji" {
725 icon, _ := tag.GetMap("icon")
726 mt, _ := icon.GetString("mediaType")
727 if mt == "" {
728 mt = "image/png"
729 }
730 u, _ := icon.GetString("url")
731 donk := savedonk(u, name, desc, mt, true)
732 if donk != nil {
733 xonk.Donks = append(xonk.Donks, donk)
734 }
735 }
736 if tt == "Hashtag" {
737 if name == "" || name == "#" {
738 // skip it
739 } else {
740 if name[0] != '#' {
741 name = "#" + name
742 }
743 xonk.Onts = append(xonk.Onts, name)
744 }
745 }
746 if tt == "Place" {
747 p := new(Place)
748 p.Name = name
749 p.Latitude, _ = tag["latitude"].(float64)
750 p.Longitude, _ = tag["longitude"].(float64)
751 p.Url, _ = tag.GetString("url")
752 xonk.Place = p
753 }
754 if tt == "Mention" {
755 m, _ := tag.GetString("href")
756 mentions = append(mentions, m)
757 }
758 }
759 starttime, ok := obj.GetString("startTime")
760 if ok {
761 start, err := time.Parse(time.RFC3339, starttime)
762 if err == nil {
763 t := new(Time)
764 t.StartTime = start
765 endtime, _ := obj.GetString("endTime")
766 t.EndTime, _ = time.Parse(time.RFC3339, endtime)
767 dura, _ := obj.GetString("duration")
768 if strings.HasPrefix(dura, "PT") {
769 dura = strings.ToLower(dura[2:])
770 d, _ := time.ParseDuration(dura)
771 t.Duration = Duration(d)
772 }
773 xonk.Time = t
774 }
775 }
776 loca, ok := obj.GetMap("location")
777 if ok {
778 tt, _ := loca.GetString("type")
779 name, _ := loca.GetString("name")
780 if tt == "Place" {
781 p := new(Place)
782 p.Name = name
783 p.Latitude, _ = loca["latitude"].(float64)
784 p.Longitude, _ = loca["longitude"].(float64)
785 p.Url, _ = loca.GetString("url")
786 xonk.Place = p
787 }
788 }
789
790 xonk.Onts = oneofakind(xonk.Onts)
791 replyobj, ok := obj.GetMap("replies")
792 if ok {
793 items, ok := replyobj.GetArray("items")
794 if !ok {
795 first, ok := replyobj.GetMap("first")
796 if ok {
797 items, _ = first.GetArray("items")
798 }
799 }
800 for _, repl := range items {
801 s, ok := repl.(string)
802 if ok {
803 replies = append(replies, s)
804 }
805 }
806 }
807
808 }
809 if originate(xid) != origin {
810 log.Printf("original sin: %s <> %s", xid, origin)
811 item.Write(os.Stdout)
812 return nil
813 }
814
815 if currenttid == "" {
816 currenttid = convoy
817 }
818
819 if len(content) > 90001 {
820 log.Printf("content too long. truncating")
821 content = content[:90001]
822 }
823
824 // init xonk
825 xonk.What = what
826 xonk.XID = xid
827 xonk.RID = rid
828 xonk.Date, _ = time.Parse(time.RFC3339, dt)
829 xonk.URL = url
830 xonk.Noise = content
831 xonk.Precis = precis
832 xonk.Format = "html"
833 xonk.Convoy = convoy
834 for _, m := range mentions {
835 if m == user.URL {
836 xonk.Whofore = 1
837 }
838 }
839 imaginate(&xonk)
840
841 if isUpdate {
842 log.Printf("something has changed! %s", xonk.XID)
843 prev := getxonk(user.ID, xonk.XID)
844 if prev == nil {
845 log.Printf("didn't find old version for update: %s", xonk.XID)
846 isUpdate = false
847 } else {
848 prev.Noise = xonk.Noise
849 prev.Precis = xonk.Precis
850 prev.Date = xonk.Date
851 prev.Donks = xonk.Donks
852 prev.Onts = xonk.Onts
853 prev.Place = xonk.Place
854 updatehonk(prev)
855 }
856 }
857 if !isUpdate && needxonk(user, &xonk) {
858 if strings.HasSuffix(convoy, "#context") {
859 // friendica...
860 if rid != "" {
861 convoy = ""
862 } else {
863 convoy = url
864 }
865 }
866 if rid != "" {
867 if needxonkid(user, rid) {
868 goingup++
869 saveonemore(rid)
870 goingup--
871 }
872 if convoy == "" {
873 xx := getxonk(user.ID, rid)
874 if xx != nil {
875 convoy = xx.Convoy
876 }
877 }
878 }
879 if convoy == "" {
880 convoy = currenttid
881 }
882 if convoy == "" {
883 convoy = "missing-" + xfiltrate()
884 currenttid = convoy
885 }
886 xonk.Convoy = convoy
887 savexonk(&xonk)
888 }
889 if goingup == 0 {
890 for _, replid := range replies {
891 if needxonkid(user, replid) {
892 log.Printf("missing a reply: %s", replid)
893 saveonemore(replid)
894 }
895 }
896 }
897 return &xonk
898 }
899
900 return xonkxonkfn(item, origin)
901}
902
903func rubadubdub(user *WhatAbout, req junk.Junk) {
904 xid, _ := req.GetString("id")
905 actor, _ := req.GetString("actor")
906 j := junk.New()
907 j["@context"] = itiswhatitis
908 j["id"] = user.URL + "/dub/" + url.QueryEscape(xid)
909 j["type"] = "Accept"
910 j["actor"] = user.URL
911 j["to"] = actor
912 j["published"] = time.Now().UTC().Format(time.RFC3339)
913 j["object"] = req
914
915 deliverate(0, user.ID, actor, j.ToBytes())
916}
917
918func itakeitallback(user *WhatAbout, xid string) {
919 j := junk.New()
920 j["@context"] = itiswhatitis
921 j["id"] = user.URL + "/unsub/" + url.QueryEscape(xid)
922 j["type"] = "Undo"
923 j["actor"] = user.URL
924 j["to"] = xid
925 f := junk.New()
926 f["id"] = user.URL + "/sub/" + url.QueryEscape(xid)
927 f["type"] = "Follow"
928 f["actor"] = user.URL
929 f["to"] = xid
930 f["object"] = xid
931 j["object"] = f
932 j["published"] = time.Now().UTC().Format(time.RFC3339)
933
934 deliverate(0, user.ID, xid, j.ToBytes())
935}
936
937func subsub(user *WhatAbout, xid string) {
938 if xid == "" {
939 log.Printf("can't subscribe to empty")
940 return
941 }
942 j := junk.New()
943 j["@context"] = itiswhatitis
944 j["id"] = user.URL + "/sub/" + url.QueryEscape(xid)
945 j["type"] = "Follow"
946 j["actor"] = user.URL
947 j["to"] = xid
948 j["object"] = xid
949 j["published"] = time.Now().UTC().Format(time.RFC3339)
950
951 var buf bytes.Buffer
952 j.Write(&buf)
953 msg := buf.Bytes()
954
955 deliverate(0, user.ID, xid, msg)
956}
957
958// returns activity, object
959func jonkjonk(user *WhatAbout, h *Honk) (junk.Junk, junk.Junk) {
960 dt := h.Date.Format(time.RFC3339)
961 var jo junk.Junk
962 j := junk.New()
963 j["id"] = user.URL + "/" + h.What + "/" + shortxid(h.XID)
964 j["actor"] = user.URL
965 j["published"] = dt
966 if h.Public {
967 j["to"] = []string{h.Audience[0], user.URL + "/followers"}
968 } else {
969 j["to"] = h.Audience[0]
970 }
971 if len(h.Audience) > 1 {
972 j["cc"] = h.Audience[1:]
973 }
974
975 switch h.What {
976 case "update":
977 fallthrough
978 case "tonk":
979 fallthrough
980 case "event":
981 fallthrough
982 case "honk":
983 j["type"] = "Create"
984 if h.What == "update" {
985 j["type"] = "Update"
986 }
987
988 jo = junk.New()
989 jo["id"] = h.XID
990 jo["type"] = "Note"
991 if h.What == "event" {
992 jo["type"] = "Event"
993 }
994 jo["published"] = dt
995 jo["url"] = h.XID
996 jo["attributedTo"] = user.URL
997 if h.RID != "" {
998 jo["inReplyTo"] = h.RID
999 }
1000 if h.Convoy != "" {
1001 jo["context"] = h.Convoy
1002 jo["conversation"] = h.Convoy
1003 }
1004 jo["to"] = h.Audience[0]
1005 if len(h.Audience) > 1 {
1006 jo["cc"] = h.Audience[1:]
1007 }
1008 if !h.Public {
1009 jo["directMessage"] = true
1010 }
1011 translate(h, true)
1012 h.Noise = re_memes.ReplaceAllString(h.Noise, "")
1013 jo["summary"] = html.EscapeString(h.Precis)
1014 jo["content"] = ontologize(mentionize(h.Noise))
1015 if strings.HasPrefix(h.Precis, "DZ:") {
1016 jo["sensitive"] = true
1017 }
1018
1019 var replies []string
1020 for _, reply := range h.Replies {
1021 replies = append(replies, reply.XID)
1022 }
1023 if len(replies) > 0 {
1024 jr := junk.New()
1025 jr["type"] = "Collection"
1026 jr["totalItems"] = len(replies)
1027 jr["items"] = replies
1028 jo["replies"] = jr
1029 }
1030
1031 var tags []junk.Junk
1032 for _, m := range bunchofgrapes(h.Noise) {
1033 t := junk.New()
1034 t["type"] = "Mention"
1035 t["name"] = m.who
1036 t["href"] = m.where
1037 tags = append(tags, t)
1038 }
1039 for _, o := range h.Onts {
1040 t := junk.New()
1041 t["type"] = "Hashtag"
1042 o = strings.ToLower(o)
1043 t["href"] = fmt.Sprintf("https://%s/o/%s", serverName, o[1:])
1044 t["name"] = o
1045 tags = append(tags, t)
1046 }
1047 for _, e := range herdofemus(h.Noise) {
1048 t := junk.New()
1049 t["id"] = e.ID
1050 t["type"] = "Emoji"
1051 t["name"] = e.Name
1052 i := junk.New()
1053 i["type"] = "Image"
1054 i["mediaType"] = "image/png"
1055 i["url"] = e.ID
1056 t["icon"] = i
1057 tags = append(tags, t)
1058 }
1059 if p := h.Place; p != nil {
1060 t := junk.New()
1061 t["type"] = "Place"
1062 t["name"] = p.Name
1063 t["latitude"] = p.Latitude
1064 t["longitude"] = p.Longitude
1065 t["url"] = p.Url
1066 if h.What == "event" {
1067 jo["location"] = t
1068 } else {
1069 tags = append(tags, t)
1070 }
1071 }
1072 if len(tags) > 0 {
1073 jo["tag"] = tags
1074 }
1075 if t := h.Time; t != nil {
1076 jo["startTime"] = t.StartTime.Format(time.RFC3339)
1077 if t.Duration != 0 {
1078 jo["duration"] = "PT" + strings.ToUpper(t.Duration.String())
1079 }
1080 }
1081 var atts []junk.Junk
1082 for _, d := range h.Donks {
1083 if re_emus.MatchString(d.Name) {
1084 continue
1085 }
1086 jd := junk.New()
1087 jd["mediaType"] = d.Media
1088 jd["name"] = d.Name
1089 jd["summary"] = html.EscapeString(d.Desc)
1090 jd["type"] = "Document"
1091 jd["url"] = d.URL
1092 atts = append(atts, jd)
1093 }
1094 if len(atts) > 0 {
1095 jo["attachment"] = atts
1096 }
1097 j["object"] = jo
1098 case "bonk":
1099 j["type"] = "Announce"
1100 if h.Convoy != "" {
1101 j["context"] = h.Convoy
1102 }
1103 j["object"] = h.XID
1104 case "unbonk":
1105 b := junk.New()
1106 b["id"] = user.URL + "/" + "bonk" + "/" + shortxid(h.XID)
1107 b["type"] = "Announce"
1108 b["actor"] = user.URL
1109 if h.Convoy != "" {
1110 b["context"] = h.Convoy
1111 }
1112 b["object"] = h.XID
1113 j["type"] = "Undo"
1114 j["object"] = b
1115 case "zonk":
1116 j["type"] = "Delete"
1117 j["object"] = h.XID
1118 case "ack":
1119 j["type"] = "Read"
1120 j["object"] = h.XID
1121 case "deack":
1122 b := junk.New()
1123 b["id"] = user.URL + "/" + "ack" + "/" + shortxid(h.XID)
1124 b["type"] = "Read"
1125 b["actor"] = user.URL
1126 b["object"] = h.XID
1127 j["type"] = "Undo"
1128 j["object"] = b
1129 }
1130
1131 return j, jo
1132}
1133
1134var oldjonks = cache.New(cache.Options{Filler: func(xid string) ([]byte, bool) {
1135 row := stmtAnyXonk.QueryRow(xid)
1136 honk := scanhonk(row)
1137 if honk == nil || !honk.Public {
1138 return nil, true
1139 }
1140 user, _ := butwhatabout(honk.Username)
1141 rawhonks := gethonksbyconvoy(honk.UserID, honk.Convoy, 0)
1142 reversehonks(rawhonks)
1143 for _, h := range rawhonks {
1144 if h.RID == honk.XID && h.Public && (h.Whofore == 2 || h.IsAcked()) {
1145 honk.Replies = append(honk.Replies, h)
1146 }
1147 }
1148 donksforhonks([]*Honk{honk})
1149 _, j := jonkjonk(user, honk)
1150 j["@context"] = itiswhatitis
1151
1152 return j.ToBytes(), true
1153}})
1154
1155func gimmejonk(xid string) ([]byte, bool) {
1156 var j []byte
1157 ok := oldjonks.Get(xid, &j)
1158 return j, ok
1159}
1160
1161func honkworldwide(user *WhatAbout, honk *Honk) {
1162 jonk, _ := jonkjonk(user, honk)
1163 jonk["@context"] = itiswhatitis
1164 msg := jonk.ToBytes()
1165
1166 rcpts := make(map[string]bool)
1167 for _, a := range honk.Audience {
1168 if a == thewholeworld || a == user.URL || strings.HasSuffix(a, "/followers") {
1169 continue
1170 }
1171 var box *Box
1172 ok := boxofboxes.Get(a, &box)
1173 if ok && honk.Public && box.Shared != "" {
1174 rcpts["%"+box.Shared] = true
1175 } else {
1176 rcpts[a] = true
1177 }
1178 }
1179 if honk.Public {
1180 for _, h := range getdubs(user.ID) {
1181 if h.XID == user.URL {
1182 continue
1183 }
1184 var box *Box
1185 ok := boxofboxes.Get(h.XID, &box)
1186 if ok && box.Shared != "" {
1187 rcpts["%"+box.Shared] = true
1188 } else {
1189 rcpts[h.XID] = true
1190 }
1191 }
1192 }
1193 for a := range rcpts {
1194 go deliverate(0, user.ID, a, msg)
1195 }
1196}
1197
1198func junkuser(user *WhatAbout) []byte {
1199 about := markitzero(user.About)
1200
1201 j := junk.New()
1202 j["@context"] = itiswhatitis
1203 j["id"] = user.URL
1204 j["inbox"] = user.URL + "/inbox"
1205 j["outbox"] = user.URL + "/outbox"
1206 j["name"] = user.Display
1207 j["preferredUsername"] = user.Name
1208 j["summary"] = about
1209 if user.ID > 0 {
1210 j["type"] = "Person"
1211 j["url"] = user.URL
1212 j["followers"] = user.URL + "/followers"
1213 j["following"] = user.URL + "/following"
1214 a := junk.New()
1215 a["type"] = "Image"
1216 a["mediaType"] = "image/png"
1217 a["url"] = fmt.Sprintf("https://%s/a?a=%s", serverName, url.QueryEscape(user.URL))
1218 j["icon"] = a
1219 } else {
1220 j["type"] = "Service"
1221 }
1222 k := junk.New()
1223 k["id"] = user.URL + "#key"
1224 k["owner"] = user.URL
1225 k["publicKeyPem"] = user.Key
1226 j["publicKey"] = k
1227
1228 return j.ToBytes()
1229}
1230
1231var oldjonkers = cache.New(cache.Options{Filler: func(name string) ([]byte, bool) {
1232 user, err := butwhatabout(name)
1233 if err != nil {
1234 return nil, false
1235 }
1236 return junkuser(user), true
1237}, Duration: 1 * time.Minute})
1238
1239func asjonker(name string) ([]byte, bool) {
1240 var j []byte
1241 ok := oldjonkers.Get(name, &j)
1242 return j, ok
1243}
1244
1245var handfull = cache.New(cache.Options{Filler: func(name string) (string, bool) {
1246 m := strings.Split(name, "@")
1247 if len(m) != 2 {
1248 log.Printf("bad fish name: %s", name)
1249 return "", true
1250 }
1251 row := stmtGetXonker.QueryRow(name, "fishname")
1252 var href string
1253 err := row.Scan(&href)
1254 if err == nil {
1255 return href, true
1256 }
1257 log.Printf("fishing for %s", name)
1258 j, err := GetJunkFast(fmt.Sprintf("https://%s/.well-known/webfinger?resource=acct:%s", m[1], name))
1259 if err != nil {
1260 log.Printf("failed to go fish %s: %s", name, err)
1261 return "", true
1262 }
1263 links, _ := j.GetArray("links")
1264 for _, li := range links {
1265 l, ok := li.(junk.Junk)
1266 if !ok {
1267 continue
1268 }
1269 href, _ := l.GetString("href")
1270 rel, _ := l.GetString("rel")
1271 t, _ := l.GetString("type")
1272 if rel == "self" && friendorfoe(t) {
1273 _, err := stmtSaveXonker.Exec(name, href, "fishname")
1274 if err != nil {
1275 log.Printf("error saving fishname: %s", err)
1276 }
1277 return href, true
1278 }
1279 }
1280 return href, true
1281}})
1282
1283func gofish(name string) string {
1284 if name[0] == '@' {
1285 name = name[1:]
1286 }
1287 var href string
1288 handfull.Get(name, &href)
1289 return href
1290}
1291
1292func isactor(t string) bool {
1293 switch t {
1294 case "Person":
1295 case "Organization":
1296 case "Application":
1297 case "Service":
1298 default:
1299 return false
1300 }
1301 return true
1302}
1303
1304func investigate(name string) (*Honker, error) {
1305 if name == "" {
1306 return nil, fmt.Errorf("no name")
1307 }
1308 if name[0] == '@' {
1309 name = gofish(name)
1310 }
1311 if name == "" {
1312 return nil, fmt.Errorf("no name")
1313 }
1314 obj, err := GetJunkFast(name)
1315 if err != nil {
1316 return nil, err
1317 }
1318 t, _ := obj.GetString("type")
1319 if !isactor(t) {
1320 return nil, fmt.Errorf("not a person")
1321 }
1322 xid, _ := obj.GetString("id")
1323 handle, _ := obj.GetString("preferredUsername")
1324 return &Honker{XID: xid, Handle: handle}, nil
1325}