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 xonksaver(user, obj, origin)
363 continue
364 }
365 xid, ok := item.(string)
366 if ok {
367 if !needxonkid(user, xid) {
368 continue
369 }
370 obj, err = GetJunk(xid)
371 if err != nil {
372 log.Printf("error getting item: %s", err)
373 continue
374 }
375 xonksaver(user, obj, originate(xid))
376 }
377 }
378 }
379}
380
381func whosthere(xid string) ([]string, string) {
382 obj, err := GetJunk(xid)
383 if err != nil {
384 log.Printf("error getting remote xonk: %s", err)
385 return nil, ""
386 }
387 convoy, _ := obj.GetString("context")
388 if convoy == "" {
389 convoy, _ = obj.GetString("conversation")
390 }
391 return newphone(nil, obj), convoy
392}
393
394func newphone(a []string, obj junk.Junk) []string {
395 for _, addr := range []string{"to", "cc", "attributedTo"} {
396 who, _ := obj.GetString(addr)
397 if who != "" {
398 a = append(a, who)
399 }
400 whos, _ := obj.GetArray(addr)
401 for _, w := range whos {
402 who, _ := w.(string)
403 if who != "" {
404 a = append(a, who)
405 }
406 }
407 }
408 return a
409}
410
411func extractattrto(obj junk.Junk) string {
412 who, _ := obj.GetString("attributedTo")
413 if who != "" {
414 return who
415 }
416 o, ok := obj.GetMap("attributedTo")
417 if ok {
418 id, ok := o.GetString("id")
419 if ok {
420 return id
421 }
422 }
423 arr, _ := obj.GetArray("attributedTo")
424 for _, a := range arr {
425 o, ok := a.(junk.Junk)
426 if ok {
427 t, _ := o.GetString("type")
428 id, _ := o.GetString("id")
429 if t == "Person" || t == "" {
430 return id
431 }
432 }
433 s, ok := a.(string)
434 if ok {
435 return s
436 }
437 }
438 return ""
439}
440
441func xonksaver(user *WhatAbout, item junk.Junk, origin string) *Honk {
442 depth := 0
443 maxdepth := 10
444 currenttid := ""
445 goingup := 0
446 var xonkxonkfn func(item junk.Junk, origin string) *Honk
447
448 saveonemore := func(xid string) {
449 log.Printf("getting onemore: %s", xid)
450 if depth >= maxdepth {
451 log.Printf("in too deep")
452 return
453 }
454 obj, err := GetJunkHardMode(xid)
455 if err != nil {
456 log.Printf("error getting onemore: %s: %s", xid, err)
457 return
458 }
459 depth++
460 xonkxonkfn(obj, originate(xid))
461 depth--
462 }
463
464 xonkxonkfn = func(item junk.Junk, origin string) *Honk {
465 // id, _ := item.GetString( "id")
466 what, _ := item.GetString("type")
467 dt, _ := item.GetString("published")
468
469 var err error
470 var xid, rid, url, content, precis, convoy string
471 var replies []string
472 var obj junk.Junk
473 var ok bool
474 isUpdate := false
475 switch what {
476 case "Delete":
477 obj, ok = item.GetMap("object")
478 if ok {
479 xid, _ = obj.GetString("id")
480 } else {
481 xid, _ = item.GetString("object")
482 }
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 "Tombstone":
494 xid, _ = item.GetString("id")
495 if xid == "" {
496 return nil
497 }
498 if originate(xid) != origin {
499 log.Printf("forged delete: %s", xid)
500 return nil
501 }
502 log.Printf("eradicating %s", xid)
503 eradicatexonk(user.ID, xid)
504 return nil
505 case "Announce":
506 obj, ok = item.GetMap("object")
507 if ok {
508 xid, _ = obj.GetString("id")
509 } else {
510 xid, _ = item.GetString("object")
511 }
512 if !needxonkid(user, xid) {
513 return nil
514 }
515 log.Printf("getting bonk: %s", xid)
516 obj, err = GetJunkHardMode(xid)
517 if err != nil {
518 log.Printf("error getting bonk: %s: %s", xid, err)
519 }
520 origin = originate(xid)
521 what = "bonk"
522 case "Update":
523 isUpdate = true
524 fallthrough
525 case "Create":
526 obj, ok = item.GetMap("object")
527 if !ok {
528 xid, _ = item.GetString("object")
529 log.Printf("getting created honk: %s", xid)
530 obj, err = GetJunkHardMode(xid)
531 if err != nil {
532 log.Printf("error getting creation: %s", err)
533 }
534 }
535 what = "honk"
536 if obj != nil {
537 t, _ := obj.GetString("type")
538 switch t {
539 case "Event":
540 what = "event"
541 }
542 }
543 case "Read":
544 xid, ok = item.GetString("object")
545 if ok {
546 if !needxonkid(user, xid) {
547 log.Printf("don't need read obj: %s", xid)
548 return nil
549 }
550 obj, err = GetJunkHardMode(xid)
551 if err != nil {
552 log.Printf("error getting read: %s", err)
553 return nil
554 }
555 return xonkxonkfn(obj, originate(xid))
556 }
557 return nil
558 case "Audio":
559 fallthrough
560 case "Video":
561 fallthrough
562 case "Question":
563 fallthrough
564 case "Note":
565 fallthrough
566 case "Article":
567 fallthrough
568 case "Page":
569 obj = item
570 what = "honk"
571 case "Event":
572 obj = item
573 what = "event"
574 default:
575 log.Printf("unknown activity: %s", what)
576 fd, _ := os.OpenFile("savedinbox.json", os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
577 item.Write(fd)
578 io.WriteString(fd, "\n")
579 fd.Close()
580 return nil
581 }
582
583 if obj != nil {
584 _, ok := obj.GetString("diaspora:guid")
585 if ok {
586 // friendica does the silliest bonks
587 c, ok := obj.GetString("source", "content")
588 if ok {
589 re_link := regexp.MustCompile(`link='([^']*)'`)
590 m := re_link.FindStringSubmatch(c)
591 if len(m) > 1 {
592 xid := m[1]
593 log.Printf("getting friendica flavored bonk: %s", xid)
594 if !needxonkid(user, xid) {
595 return nil
596 }
597 newobj, err := GetJunkHardMode(xid)
598 if err != nil {
599 log.Printf("error getting bonk: %s: %s", xid, err)
600 } else {
601 obj = newobj
602 origin = originate(xid)
603 what = "bonk"
604 }
605 }
606 }
607 }
608 }
609
610 var xonk Honk
611 // early init
612 xonk.UserID = user.ID
613 xonk.Honker, _ = item.GetString("actor")
614 if xonk.Honker == "" {
615 xonk.Honker, _ = item.GetString("attributedTo")
616 }
617 if obj != nil {
618 if xonk.Honker == "" {
619 xonk.Honker = extractattrto(obj)
620 }
621 xonk.Oonker = extractattrto(obj)
622 if xonk.Oonker == xonk.Honker {
623 xonk.Oonker = ""
624 }
625 xonk.Audience = newphone(nil, obj)
626 }
627 xonk.Audience = append(xonk.Audience, xonk.Honker)
628 xonk.Audience = oneofakind(xonk.Audience)
629
630 var mentions []string
631 if obj != nil {
632 ot, _ := obj.GetString("type")
633 url, _ = obj.GetString("url")
634 dt2, ok := obj.GetString("published")
635 if ok {
636 dt = dt2
637 }
638 xid, _ = obj.GetString("id")
639 precis, _ = obj.GetString("summary")
640 if precis == "" {
641 precis, _ = obj.GetString("name")
642 }
643 content, _ = obj.GetString("content")
644 if !strings.HasPrefix(content, "<p>") {
645 content = "<p>" + content
646 }
647 sens, _ := obj["sensitive"].(bool)
648 if sens && precis == "" {
649 precis = "unspecified horror"
650 }
651 rid, ok = obj.GetString("inReplyTo")
652 if !ok {
653 robj, ok := obj.GetMap("inReplyTo")
654 if ok {
655 rid, _ = robj.GetString("id")
656 }
657 }
658 convoy, _ = obj.GetString("context")
659 if convoy == "" {
660 convoy, _ = obj.GetString("conversation")
661 }
662 if ot == "Question" {
663 if what == "honk" {
664 what = "qonk"
665 }
666 content += "<ul>"
667 ans, _ := obj.GetArray("oneOf")
668 for _, ai := range ans {
669 a, ok := ai.(junk.Junk)
670 if !ok {
671 continue
672 }
673 as, _ := a.GetString("name")
674 content += "<li>" + as
675 }
676 ans, _ = obj.GetArray("anyOf")
677 for _, ai := range ans {
678 a, ok := ai.(junk.Junk)
679 if !ok {
680 continue
681 }
682 as, _ := a.GetString("name")
683 content += "<li>" + as
684 }
685 content += "</ul>"
686 }
687 if what == "honk" && rid != "" {
688 what = "tonk"
689 }
690 atts, _ := obj.GetArray("attachment")
691 for i, atti := range atts {
692 att, ok := atti.(junk.Junk)
693 if !ok {
694 continue
695 }
696 at, _ := att.GetString("type")
697 mt, _ := att.GetString("mediaType")
698 u, _ := att.GetString("url")
699 name, _ := att.GetString("name")
700 desc, _ := att.GetString("summary")
701 if desc == "" {
702 desc = name
703 }
704 localize := false
705 if i > 4 {
706 log.Printf("excessive attachment: %s", at)
707 } else if at == "Document" || at == "Image" {
708 mt = strings.ToLower(mt)
709 log.Printf("attachment: %s %s", mt, u)
710 if mt == "text/plain" || strings.HasPrefix(mt, "image") {
711 localize = true
712 }
713 } else {
714 log.Printf("unknown attachment: %s", at)
715 }
716 if skipMedia(&xonk) {
717 localize = false
718 }
719 donk := savedonk(u, name, desc, mt, localize)
720 if donk != nil {
721 xonk.Donks = append(xonk.Donks, donk)
722 }
723 }
724 tags, _ := obj.GetArray("tag")
725 for _, tagi := range tags {
726 tag, ok := tagi.(junk.Junk)
727 if !ok {
728 continue
729 }
730 tt, _ := tag.GetString("type")
731 name, _ := tag.GetString("name")
732 desc, _ := tag.GetString("summary")
733 if desc == "" {
734 desc = name
735 }
736 if tt == "Emoji" {
737 icon, _ := tag.GetMap("icon")
738 mt, _ := icon.GetString("mediaType")
739 if mt == "" {
740 mt = "image/png"
741 }
742 u, _ := icon.GetString("url")
743 donk := savedonk(u, name, desc, mt, true)
744 if donk != nil {
745 xonk.Donks = append(xonk.Donks, donk)
746 }
747 }
748 if tt == "Hashtag" {
749 if name == "" || name == "#" {
750 // skip it
751 } else {
752 if name[0] != '#' {
753 name = "#" + name
754 }
755 xonk.Onts = append(xonk.Onts, name)
756 }
757 }
758 if tt == "Place" {
759 p := new(Place)
760 p.Name = name
761 p.Latitude, _ = tag["latitude"].(float64)
762 p.Longitude, _ = tag["longitude"].(float64)
763 p.Url, _ = tag.GetString("url")
764 xonk.Place = p
765 }
766 if tt == "Mention" {
767 m, _ := tag.GetString("href")
768 mentions = append(mentions, m)
769 }
770 }
771 starttime, ok := obj.GetString("startTime")
772 if ok {
773 start, err := time.Parse(time.RFC3339, starttime)
774 if err == nil {
775 t := new(Time)
776 t.StartTime = start
777 endtime, _ := obj.GetString("endTime")
778 t.EndTime, _ = time.Parse(time.RFC3339, endtime)
779 dura, _ := obj.GetString("duration")
780 if strings.HasPrefix(dura, "PT") {
781 dura = strings.ToLower(dura[2:])
782 d, _ := time.ParseDuration(dura)
783 t.Duration = Duration(d)
784 }
785 xonk.Time = t
786 }
787 }
788 loca, ok := obj.GetMap("location")
789 if ok {
790 tt, _ := loca.GetString("type")
791 name, _ := loca.GetString("name")
792 if tt == "Place" {
793 p := new(Place)
794 p.Name = name
795 p.Latitude, _ = loca["latitude"].(float64)
796 p.Longitude, _ = loca["longitude"].(float64)
797 p.Url, _ = loca.GetString("url")
798 xonk.Place = p
799 }
800 }
801
802 xonk.Onts = oneofakind(xonk.Onts)
803 replyobj, ok := obj.GetMap("replies")
804 if ok {
805 items, ok := replyobj.GetArray("items")
806 if !ok {
807 first, ok := replyobj.GetMap("first")
808 if ok {
809 items, _ = first.GetArray("items")
810 }
811 }
812 for _, repl := range items {
813 s, ok := repl.(string)
814 if ok {
815 replies = append(replies, s)
816 }
817 }
818 }
819
820 }
821 if originate(xid) != origin {
822 log.Printf("original sin: %s <> %s", xid, origin)
823 item.Write(os.Stdout)
824 return nil
825 }
826
827 if currenttid == "" {
828 currenttid = convoy
829 }
830
831 if len(content) > 90001 {
832 log.Printf("content too long. truncating")
833 content = content[:90001]
834 }
835
836 // init xonk
837 xonk.What = what
838 xonk.XID = xid
839 xonk.RID = rid
840 xonk.Date, _ = time.Parse(time.RFC3339, dt)
841 xonk.URL = url
842 xonk.Noise = content
843 xonk.Precis = precis
844 xonk.Format = "html"
845 xonk.Convoy = convoy
846 for _, m := range mentions {
847 if m == user.URL {
848 xonk.Whofore = 1
849 }
850 }
851 imaginate(&xonk)
852
853 if isUpdate {
854 log.Printf("something has changed! %s", xonk.XID)
855 prev := getxonk(user.ID, xonk.XID)
856 if prev == nil {
857 log.Printf("didn't find old version for update: %s", xonk.XID)
858 isUpdate = false
859 } else {
860 prev.Noise = xonk.Noise
861 prev.Precis = xonk.Precis
862 prev.Date = xonk.Date
863 prev.Donks = xonk.Donks
864 prev.Onts = xonk.Onts
865 prev.Place = xonk.Place
866 updatehonk(prev)
867 }
868 }
869 if !isUpdate && needxonk(user, &xonk) {
870 if strings.HasSuffix(convoy, "#context") {
871 // friendica...
872 if rid != "" {
873 convoy = ""
874 } else {
875 convoy = url
876 }
877 }
878 if rid != "" {
879 if needxonkid(user, rid) {
880 goingup++
881 saveonemore(rid)
882 goingup--
883 }
884 if convoy == "" {
885 xx := getxonk(user.ID, rid)
886 if xx != nil {
887 convoy = xx.Convoy
888 }
889 }
890 }
891 if convoy == "" {
892 convoy = currenttid
893 }
894 if convoy == "" {
895 convoy = "missing-" + xfiltrate()
896 currenttid = convoy
897 }
898 xonk.Convoy = convoy
899 savexonk(&xonk)
900 }
901 if goingup == 0 {
902 for _, replid := range replies {
903 if needxonkid(user, replid) {
904 log.Printf("missing a reply: %s", replid)
905 saveonemore(replid)
906 }
907 }
908 }
909 return &xonk
910 }
911
912 return xonkxonkfn(item, origin)
913}
914
915func rubadubdub(user *WhatAbout, req junk.Junk) {
916 xid, _ := req.GetString("id")
917 actor, _ := req.GetString("actor")
918 j := junk.New()
919 j["@context"] = itiswhatitis
920 j["id"] = user.URL + "/dub/" + url.QueryEscape(xid)
921 j["type"] = "Accept"
922 j["actor"] = user.URL
923 j["to"] = actor
924 j["published"] = time.Now().UTC().Format(time.RFC3339)
925 j["object"] = req
926
927 deliverate(0, user.ID, actor, j.ToBytes())
928}
929
930func itakeitallback(user *WhatAbout, xid string) {
931 j := junk.New()
932 j["@context"] = itiswhatitis
933 j["id"] = user.URL + "/unsub/" + url.QueryEscape(xid)
934 j["type"] = "Undo"
935 j["actor"] = user.URL
936 j["to"] = xid
937 f := junk.New()
938 f["id"] = user.URL + "/sub/" + url.QueryEscape(xid)
939 f["type"] = "Follow"
940 f["actor"] = user.URL
941 f["to"] = xid
942 f["object"] = xid
943 j["object"] = f
944 j["published"] = time.Now().UTC().Format(time.RFC3339)
945
946 deliverate(0, user.ID, xid, j.ToBytes())
947}
948
949func subsub(user *WhatAbout, xid string, owner string) {
950 if xid == "" {
951 log.Printf("can't subscribe to empty")
952 return
953 }
954 j := junk.New()
955 j["@context"] = itiswhatitis
956 j["id"] = user.URL + "/sub/" + url.QueryEscape(xid)
957 j["type"] = "Follow"
958 j["actor"] = user.URL
959 j["to"] = owner
960 j["object"] = xid
961 j["published"] = time.Now().UTC().Format(time.RFC3339)
962
963 deliverate(0, user.ID, owner, j.ToBytes())
964}
965
966// returns activity, object
967func jonkjonk(user *WhatAbout, h *Honk) (junk.Junk, junk.Junk) {
968 dt := h.Date.Format(time.RFC3339)
969 var jo junk.Junk
970 j := junk.New()
971 j["id"] = user.URL + "/" + h.What + "/" + shortxid(h.XID)
972 j["actor"] = user.URL
973 j["published"] = dt
974 if h.Public {
975 j["to"] = []string{h.Audience[0], user.URL + "/followers"}
976 } else {
977 j["to"] = h.Audience[0]
978 }
979 if len(h.Audience) > 1 {
980 j["cc"] = h.Audience[1:]
981 }
982
983 switch h.What {
984 case "update":
985 fallthrough
986 case "tonk":
987 fallthrough
988 case "event":
989 fallthrough
990 case "honk":
991 j["type"] = "Create"
992 if h.What == "update" {
993 j["type"] = "Update"
994 }
995
996 jo = junk.New()
997 jo["id"] = h.XID
998 jo["type"] = "Note"
999 if h.What == "event" {
1000 jo["type"] = "Event"
1001 }
1002 jo["published"] = dt
1003 jo["url"] = h.XID
1004 jo["attributedTo"] = user.URL
1005 if h.RID != "" {
1006 jo["inReplyTo"] = h.RID
1007 }
1008 if h.Convoy != "" {
1009 jo["context"] = h.Convoy
1010 jo["conversation"] = h.Convoy
1011 }
1012 jo["to"] = h.Audience[0]
1013 if len(h.Audience) > 1 {
1014 jo["cc"] = h.Audience[1:]
1015 }
1016 if !h.Public {
1017 jo["directMessage"] = true
1018 }
1019 translate(h, true)
1020 h.Noise = re_memes.ReplaceAllString(h.Noise, "")
1021 jo["summary"] = html.EscapeString(h.Precis)
1022 jo["content"] = ontologize(mentionize(h.Noise))
1023 if strings.HasPrefix(h.Precis, "DZ:") {
1024 jo["sensitive"] = true
1025 }
1026
1027 var replies []string
1028 for _, reply := range h.Replies {
1029 replies = append(replies, reply.XID)
1030 }
1031 if len(replies) > 0 {
1032 jr := junk.New()
1033 jr["type"] = "Collection"
1034 jr["totalItems"] = len(replies)
1035 jr["items"] = replies
1036 jo["replies"] = jr
1037 }
1038
1039 var tags []junk.Junk
1040 for _, m := range bunchofgrapes(h.Noise) {
1041 t := junk.New()
1042 t["type"] = "Mention"
1043 t["name"] = m.who
1044 t["href"] = m.where
1045 tags = append(tags, t)
1046 }
1047 for _, o := range h.Onts {
1048 t := junk.New()
1049 t["type"] = "Hashtag"
1050 o = strings.ToLower(o)
1051 t["href"] = fmt.Sprintf("https://%s/o/%s", serverName, o[1:])
1052 t["name"] = o
1053 tags = append(tags, t)
1054 }
1055 for _, e := range herdofemus(h.Noise) {
1056 t := junk.New()
1057 t["id"] = e.ID
1058 t["type"] = "Emoji"
1059 t["name"] = e.Name
1060 i := junk.New()
1061 i["type"] = "Image"
1062 i["mediaType"] = "image/png"
1063 i["url"] = e.ID
1064 t["icon"] = i
1065 tags = append(tags, t)
1066 }
1067 if p := h.Place; p != nil {
1068 t := junk.New()
1069 t["type"] = "Place"
1070 t["name"] = p.Name
1071 t["latitude"] = p.Latitude
1072 t["longitude"] = p.Longitude
1073 t["url"] = p.Url
1074 if h.What == "event" {
1075 jo["location"] = t
1076 } else {
1077 tags = append(tags, t)
1078 }
1079 }
1080 if len(tags) > 0 {
1081 jo["tag"] = tags
1082 }
1083 if t := h.Time; t != nil {
1084 jo["startTime"] = t.StartTime.Format(time.RFC3339)
1085 if t.Duration != 0 {
1086 jo["duration"] = "PT" + strings.ToUpper(t.Duration.String())
1087 }
1088 }
1089 var atts []junk.Junk
1090 for _, d := range h.Donks {
1091 if re_emus.MatchString(d.Name) {
1092 continue
1093 }
1094 jd := junk.New()
1095 jd["mediaType"] = d.Media
1096 jd["name"] = d.Name
1097 jd["summary"] = html.EscapeString(d.Desc)
1098 jd["type"] = "Document"
1099 jd["url"] = d.URL
1100 atts = append(atts, jd)
1101 }
1102 if len(atts) > 0 {
1103 jo["attachment"] = atts
1104 }
1105 j["object"] = jo
1106 case "bonk":
1107 j["type"] = "Announce"
1108 if h.Convoy != "" {
1109 j["context"] = h.Convoy
1110 }
1111 j["object"] = h.XID
1112 case "unbonk":
1113 b := junk.New()
1114 b["id"] = user.URL + "/" + "bonk" + "/" + shortxid(h.XID)
1115 b["type"] = "Announce"
1116 b["actor"] = user.URL
1117 if h.Convoy != "" {
1118 b["context"] = h.Convoy
1119 }
1120 b["object"] = h.XID
1121 j["type"] = "Undo"
1122 j["object"] = b
1123 case "zonk":
1124 j["type"] = "Delete"
1125 j["object"] = h.XID
1126 case "ack":
1127 j["type"] = "Read"
1128 j["object"] = h.XID
1129 case "deack":
1130 b := junk.New()
1131 b["id"] = user.URL + "/" + "ack" + "/" + shortxid(h.XID)
1132 b["type"] = "Read"
1133 b["actor"] = user.URL
1134 b["object"] = h.XID
1135 j["type"] = "Undo"
1136 j["object"] = b
1137 }
1138
1139 return j, jo
1140}
1141
1142var oldjonks = cache.New(cache.Options{Filler: func(xid string) ([]byte, bool) {
1143 row := stmtAnyXonk.QueryRow(xid)
1144 honk := scanhonk(row)
1145 if honk == nil || !honk.Public {
1146 return nil, true
1147 }
1148 user, _ := butwhatabout(honk.Username)
1149 rawhonks := gethonksbyconvoy(honk.UserID, honk.Convoy, 0)
1150 reversehonks(rawhonks)
1151 for _, h := range rawhonks {
1152 if h.RID == honk.XID && h.Public && (h.Whofore == 2 || h.IsAcked()) {
1153 honk.Replies = append(honk.Replies, h)
1154 }
1155 }
1156 donksforhonks([]*Honk{honk})
1157 _, j := jonkjonk(user, honk)
1158 j["@context"] = itiswhatitis
1159
1160 return j.ToBytes(), true
1161}})
1162
1163func gimmejonk(xid string) ([]byte, bool) {
1164 var j []byte
1165 ok := oldjonks.Get(xid, &j)
1166 return j, ok
1167}
1168
1169func honkworldwide(user *WhatAbout, honk *Honk) {
1170 jonk, _ := jonkjonk(user, honk)
1171 jonk["@context"] = itiswhatitis
1172 msg := jonk.ToBytes()
1173
1174 rcpts := make(map[string]bool)
1175 for _, a := range honk.Audience {
1176 if a == thewholeworld || a == user.URL || strings.HasSuffix(a, "/followers") {
1177 continue
1178 }
1179 var box *Box
1180 ok := boxofboxes.Get(a, &box)
1181 if ok && honk.Public && box.Shared != "" {
1182 rcpts["%"+box.Shared] = true
1183 } else {
1184 rcpts[a] = true
1185 }
1186 }
1187 if honk.Public {
1188 for _, h := range getdubs(user.ID) {
1189 if h.XID == user.URL {
1190 continue
1191 }
1192 var box *Box
1193 ok := boxofboxes.Get(h.XID, &box)
1194 if ok && box.Shared != "" {
1195 rcpts["%"+box.Shared] = true
1196 } else {
1197 rcpts[h.XID] = true
1198 }
1199 }
1200 }
1201 for a := range rcpts {
1202 go deliverate(0, user.ID, a, msg)
1203 }
1204 if honk.Public && len(honk.Onts) > 0 {
1205 collectiveaction(honk)
1206 }
1207}
1208
1209func collectiveaction(honk *Honk) {
1210 user := getserveruser()
1211 for _, ont := range honk.Onts {
1212 dubs := getnameddubs(serverUID, ont)
1213 if len(dubs) == 0 {
1214 continue
1215 }
1216 j := junk.New()
1217 j["@context"] = itiswhatitis
1218 j["type"] = "Add"
1219 j["id"] = user.URL + "/add/" + shortxid(ont+honk.XID)
1220 j["actor"] = user.URL
1221 j["object"] = honk.XID
1222 j["target"] = fmt.Sprintf("https://%s/o/%s", ont[1:])
1223 rcpts := make(map[string]bool)
1224 for _, dub := range dubs {
1225 var box *Box
1226 ok := boxofboxes.Get(dub.XID, &box)
1227 if ok && box.Shared != "" {
1228 rcpts["%"+box.Shared] = true
1229 } else {
1230 rcpts[dub.XID] = true
1231 }
1232 }
1233 msg := j.ToBytes()
1234 for a := range rcpts {
1235 go deliverate(0, user.ID, a, msg)
1236 }
1237 }
1238}
1239
1240func junkuser(user *WhatAbout) []byte {
1241 about := markitzero(user.About)
1242
1243 j := junk.New()
1244 j["@context"] = itiswhatitis
1245 j["id"] = user.URL
1246 j["inbox"] = user.URL + "/inbox"
1247 j["outbox"] = user.URL + "/outbox"
1248 j["name"] = user.Display
1249 j["preferredUsername"] = user.Name
1250 j["summary"] = about
1251 if user.ID > 0 {
1252 j["type"] = "Person"
1253 j["url"] = user.URL
1254 j["followers"] = user.URL + "/followers"
1255 j["following"] = user.URL + "/following"
1256 a := junk.New()
1257 a["type"] = "Image"
1258 a["mediaType"] = "image/png"
1259 a["url"] = fmt.Sprintf("https://%s/a?a=%s", serverName, url.QueryEscape(user.URL))
1260 j["icon"] = a
1261 } else {
1262 j["type"] = "Service"
1263 }
1264 k := junk.New()
1265 k["id"] = user.URL + "#key"
1266 k["owner"] = user.URL
1267 k["publicKeyPem"] = user.Key
1268 j["publicKey"] = k
1269
1270 return j.ToBytes()
1271}
1272
1273var oldjonkers = cache.New(cache.Options{Filler: func(name string) ([]byte, bool) {
1274 user, err := butwhatabout(name)
1275 if err != nil {
1276 return nil, false
1277 }
1278 return junkuser(user), true
1279}, Duration: 1 * time.Minute})
1280
1281func asjonker(name string) ([]byte, bool) {
1282 var j []byte
1283 ok := oldjonkers.Get(name, &j)
1284 return j, ok
1285}
1286
1287var handfull = cache.New(cache.Options{Filler: func(name string) (string, bool) {
1288 m := strings.Split(name, "@")
1289 if len(m) != 2 {
1290 log.Printf("bad fish name: %s", name)
1291 return "", true
1292 }
1293 row := stmtGetXonker.QueryRow(name, "fishname")
1294 var href string
1295 err := row.Scan(&href)
1296 if err == nil {
1297 return href, true
1298 }
1299 log.Printf("fishing for %s", name)
1300 j, err := GetJunkFast(fmt.Sprintf("https://%s/.well-known/webfinger?resource=acct:%s", m[1], name))
1301 if err != nil {
1302 log.Printf("failed to go fish %s: %s", name, err)
1303 return "", true
1304 }
1305 links, _ := j.GetArray("links")
1306 for _, li := range links {
1307 l, ok := li.(junk.Junk)
1308 if !ok {
1309 continue
1310 }
1311 href, _ := l.GetString("href")
1312 rel, _ := l.GetString("rel")
1313 t, _ := l.GetString("type")
1314 if rel == "self" && friendorfoe(t) {
1315 _, err := stmtSaveXonker.Exec(name, href, "fishname")
1316 if err != nil {
1317 log.Printf("error saving fishname: %s", err)
1318 }
1319 return href, true
1320 }
1321 }
1322 return href, true
1323}})
1324
1325func gofish(name string) string {
1326 if name[0] == '@' {
1327 name = name[1:]
1328 }
1329 var href string
1330 handfull.Get(name, &href)
1331 return href
1332}
1333
1334func investigate(name string) (*SomeThing, error) {
1335 if name == "" {
1336 return nil, fmt.Errorf("no name")
1337 }
1338 if name[0] == '@' {
1339 name = gofish(name)
1340 }
1341 if name == "" {
1342 return nil, fmt.Errorf("no name")
1343 }
1344 obj, err := GetJunkFast(name)
1345 if err != nil {
1346 return nil, err
1347 }
1348 return somethingabout(obj)
1349}
1350
1351func somethingabout(obj junk.Junk) (*SomeThing, error) {
1352 info := new(SomeThing)
1353 t, _ := obj.GetString("type")
1354 switch t {
1355 case "Person":
1356 fallthrough
1357 case "Organization":
1358 fallthrough
1359 case "Application":
1360 fallthrough
1361 case "Service":
1362 info.What = SomeActor
1363 case "OrderedCollection":
1364 fallthrough
1365 case "Collection":
1366 info.What = SomeCollection
1367 default:
1368 return nil, fmt.Errorf("unknown object type")
1369 }
1370 info.XID, _ = obj.GetString("id")
1371 info.Name, _ = obj.GetString("preferredUsername")
1372 if info.Name == "" {
1373 info.Name, _ = obj.GetString("name")
1374 }
1375 info.Owner, _ = obj.GetString("attributedTo")
1376 if info.Owner == "" {
1377 info.Owner = info.XID
1378 }
1379 return info, nil
1380}