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/htfilter"
37 "humungus.tedunangst.com/r/webs/httpsig"
38 "humungus.tedunangst.com/r/webs/image"
39 "humungus.tedunangst.com/r/webs/junk"
40)
41
42var theonetruename = `application/ld+json; profile="https://www.w3.org/ns/activitystreams"`
43var thefakename = `application/activity+json`
44var falsenames = []string{
45 `application/ld+json`,
46 `application/activity+json`,
47}
48var itiswhatitis = "https://www.w3.org/ns/activitystreams"
49var thewholeworld = "https://www.w3.org/ns/activitystreams#Public"
50
51func friendorfoe(ct string) bool {
52 ct = strings.ToLower(ct)
53 for _, at := range falsenames {
54 if strings.HasPrefix(ct, at) {
55 return true
56 }
57 }
58 return false
59}
60
61func PostJunk(keyname string, key *rsa.PrivateKey, url string, j junk.Junk) error {
62 var buf bytes.Buffer
63 j.Write(&buf)
64 return PostMsg(keyname, key, url, buf.Bytes())
65}
66
67func PostMsg(keyname string, key *rsa.PrivateKey, url string, msg []byte) error {
68 client := http.DefaultClient
69 req, err := http.NewRequest("POST", url, bytes.NewReader(msg))
70 if err != nil {
71 return err
72 }
73 req.Header.Set("User-Agent", "honksnonk/5.0; "+serverName)
74 req.Header.Set("Content-Type", theonetruename)
75 httpsig.SignRequest(keyname, key, req, msg)
76 resp, err := client.Do(req)
77 if err != nil {
78 return err
79 }
80 resp.Body.Close()
81 switch resp.StatusCode {
82 case 200:
83 case 201:
84 case 202:
85 default:
86 return fmt.Errorf("http post status: %d", resp.StatusCode)
87 }
88 log.Printf("successful post: %s %d", url, resp.StatusCode)
89 return nil
90}
91
92type JunkError struct {
93 Junk junk.Junk
94 Err error
95}
96
97func GetJunk(url string) (junk.Junk, error) {
98 return GetJunkTimeout(url, 30*time.Second)
99}
100
101func GetJunkFast(url string) (junk.Junk, error) {
102 return GetJunkTimeout(url, 5*time.Second)
103}
104
105func GetJunkHardMode(url string) (junk.Junk, error) {
106 j, err := GetJunk(url)
107 if err != nil {
108 emsg := err.Error()
109 if emsg == "http get status: 502" || strings.Contains(emsg, "timeout") {
110 log.Printf("trying again after error: %s", emsg)
111 time.Sleep(time.Duration(60+notrand.Int63n(60)) * time.Second)
112 j, err = GetJunk(url)
113 if err != nil {
114 log.Printf("still couldn't get it")
115 } else {
116 log.Printf("retry success!")
117 }
118 }
119 }
120 return j, err
121}
122
123var flightdeck = make(map[string][]chan JunkError)
124var decklock sync.Mutex
125
126func GetJunkTimeout(url string, timeout time.Duration) (junk.Junk, error) {
127 decklock.Lock()
128 inflight, ok := flightdeck[url]
129 if ok {
130 log.Printf("awaiting result for %s", url)
131 c := make(chan JunkError)
132 flightdeck[url] = append(inflight, c)
133 decklock.Unlock()
134 je := <-c
135 close(c)
136 return je.Junk, je.Err
137 }
138 flightdeck[url] = inflight
139 decklock.Unlock()
140
141 at := thefakename
142 if strings.Contains(url, ".well-known/webfinger?resource") {
143 at = "application/jrd+json"
144 }
145 j, err := junk.Get(url, junk.GetArgs{
146 Accept: at,
147 Agent: "honksnonk/5.0; " + serverName,
148 Timeout: timeout,
149 })
150
151 decklock.Lock()
152 inflight = flightdeck[url]
153 delete(flightdeck, url)
154 decklock.Unlock()
155 if len(inflight) > 0 {
156 je := JunkError{Junk: j, Err: err}
157 go func() {
158 for _, c := range inflight {
159 log.Printf("returning awaited result for %s", url)
160 c <- je
161 }
162 }()
163 }
164 return j, err
165}
166
167func savedonk(url string, name, desc, media string, localize bool) *Donk {
168 if url == "" {
169 return nil
170 }
171 donk := finddonk(url)
172 if donk != nil {
173 return donk
174 }
175 donk = new(Donk)
176 log.Printf("saving donk: %s", url)
177 xid := xfiltrate()
178 data := []byte{}
179 if localize {
180 resp, err := http.Get(url)
181 if err != nil {
182 log.Printf("error fetching %s: %s", url, err)
183 localize = false
184 goto saveit
185 }
186 defer resp.Body.Close()
187 if resp.StatusCode != 200 {
188 localize = false
189 goto saveit
190 }
191 var buf bytes.Buffer
192 limiter := io.LimitReader(resp.Body, 10*1024*1024)
193 io.Copy(&buf, limiter)
194
195 data = buf.Bytes()
196 if len(data) == 10*1024*1024 {
197 log.Printf("truncation likely")
198 }
199 if strings.HasPrefix(media, "image") {
200 img, err := image.Vacuum(&buf,
201 image.Params{LimitSize: 4200 * 4200, MaxWidth: 2048, MaxHeight: 2048})
202 if err != nil {
203 log.Printf("unable to decode image: %s", err)
204 localize = false
205 data = []byte{}
206 goto saveit
207 }
208 data = img.Data
209 format := img.Format
210 media = "image/" + format
211 if format == "jpeg" {
212 format = "jpg"
213 }
214 xid = xid + "." + format
215 } else if len(data) > 100000 {
216 log.Printf("not saving large attachment")
217 localize = false
218 data = []byte{}
219 }
220 }
221saveit:
222 fileid, err := savefile(xid, name, desc, url, media, localize, data)
223 if err != nil {
224 log.Printf("error saving file %s: %s", url, err)
225 return nil
226 }
227 donk.FileID = fileid
228 donk.XID = xid
229 return donk
230}
231
232func iszonked(userid int64, xid string) bool {
233 row := stmtFindZonk.QueryRow(userid, xid)
234 var id int64
235 err := row.Scan(&id)
236 if err == nil {
237 return true
238 }
239 if err != sql.ErrNoRows {
240 log.Printf("error querying zonk: %s", err)
241 }
242 return false
243}
244
245func needxonk(user *WhatAbout, x *Honk) bool {
246 if rejectxonk(x) {
247 return false
248 }
249 return needxonkid(user, x.XID)
250}
251func needxonkid(user *WhatAbout, xid string) bool {
252 if strings.HasPrefix(xid, user.URL+"/") {
253 return false
254 }
255 if rejectorigin(user.ID, xid) {
256 return false
257 }
258 if iszonked(user.ID, xid) {
259 log.Printf("already zonked: %s", xid)
260 return false
261 }
262 row := stmtFindXonk.QueryRow(user.ID, xid)
263 var id int64
264 err := row.Scan(&id)
265 if err == nil {
266 return false
267 }
268 if err != sql.ErrNoRows {
269 log.Printf("error querying xonk: %s", err)
270 }
271 return true
272}
273
274func eradicatexonk(userid int64, xid string) {
275 xonk := getxonk(userid, xid)
276 if xonk != nil {
277 deletehonk(xonk.ID)
278 }
279 _, err := stmtSaveZonker.Exec(userid, xid, "zonk")
280 if err != nil {
281 log.Printf("error eradicating: %s", err)
282 }
283}
284
285func savexonk(x *Honk) {
286 log.Printf("saving xonk: %s", x.XID)
287 go prehandle(x.Honker)
288 go prehandle(x.Oonker)
289 savehonk(x)
290}
291
292type Box struct {
293 In string
294 Out string
295 Shared string
296}
297
298var boxofboxes = cache.New(cache.Options{Filler: func(ident string) (*Box, bool) {
299 var info string
300 row := stmtGetXonker.QueryRow(ident, "boxes")
301 err := row.Scan(&info)
302 if err == nil {
303 m := strings.Split(info, " ")
304 b := &Box{In: m[0], Out: m[1], Shared: m[2]}
305 return b, true
306 }
307 j, err := GetJunk(ident)
308 if err != nil {
309 log.Printf("error getting boxes: %s", err)
310 return nil, false
311 }
312 inbox, _ := j.GetString("inbox")
313 outbox, _ := j.GetString("outbox")
314 sbox, _ := j.GetString("endpoints", "sharedInbox")
315 b := &Box{In: inbox, Out: outbox, Shared: sbox}
316 if inbox != "" {
317 m := strings.Join([]string{inbox, outbox, sbox}, " ")
318 _, err = stmtSaveXonker.Exec(ident, m, "boxes")
319 if err != nil {
320 log.Printf("error saving boxes: %s", err)
321 }
322 }
323 return b, true
324}})
325
326func gimmexonks(user *WhatAbout, outbox string) {
327 log.Printf("getting outbox: %s", outbox)
328 j, err := GetJunk(outbox)
329 if err != nil {
330 log.Printf("error getting outbox: %s", err)
331 return
332 }
333 t, _ := j.GetString("type")
334 origin := originate(outbox)
335 if t == "OrderedCollection" {
336 items, _ := j.GetArray("orderedItems")
337 if items == nil {
338 items, _ = j.GetArray("items")
339 }
340 if items == nil {
341 obj, ok := j.GetMap("first")
342 if ok {
343 items, _ = obj.GetArray("orderedItems")
344 } else {
345 page1, ok := j.GetString("first")
346 if ok {
347 j, err = GetJunk(page1)
348 if err != nil {
349 log.Printf("error gettings page1: %s", err)
350 return
351 }
352 items, _ = j.GetArray("orderedItems")
353 }
354 }
355 }
356 if len(items) > 20 {
357 items = items[0:20]
358 }
359 for i, j := 0, len(items)-1; i < j; i, j = i+1, j-1 {
360 items[i], items[j] = items[j], items[i]
361 }
362 for _, item := range items {
363 obj, ok := item.(junk.Junk)
364 if !ok {
365 continue
366 }
367 xonksaver(user, obj, origin)
368 }
369 }
370}
371
372func whosthere(xid string) ([]string, string) {
373 obj, err := GetJunk(xid)
374 if err != nil {
375 log.Printf("error getting remote xonk: %s", err)
376 return nil, ""
377 }
378 convoy, _ := obj.GetString("context")
379 if convoy == "" {
380 convoy, _ = obj.GetString("conversation")
381 }
382 return newphone(nil, obj), convoy
383}
384
385func newphone(a []string, obj junk.Junk) []string {
386 for _, addr := range []string{"to", "cc", "attributedTo"} {
387 who, _ := obj.GetString(addr)
388 if who != "" {
389 a = append(a, who)
390 }
391 whos, _ := obj.GetArray(addr)
392 for _, w := range whos {
393 who, _ := w.(string)
394 if who != "" {
395 a = append(a, who)
396 }
397 }
398 }
399 return a
400}
401
402func extractattrto(obj junk.Junk) string {
403 who, _ := obj.GetString("attributedTo")
404 if who != "" {
405 return who
406 }
407 o, ok := obj.GetMap("attributedTo")
408 if ok {
409 id, ok := o.GetString("id")
410 if ok {
411 return id
412 }
413 }
414 arr, _ := obj.GetArray("attributedTo")
415 for _, a := range arr {
416 o, ok := a.(junk.Junk)
417 if ok {
418 t, _ := o.GetString("type")
419 id, _ := o.GetString("id")
420 if t == "Person" || t == "" {
421 return id
422 }
423 }
424 s, ok := a.(string)
425 if ok {
426 return s
427 }
428 }
429 return ""
430}
431
432func xonksaver(user *WhatAbout, item junk.Junk, origin string) *Honk {
433 depth := 0
434 maxdepth := 10
435 currenttid := ""
436 goingup := 0
437 var xonkxonkfn func(item junk.Junk, origin string) *Honk
438
439 saveonemore := func(xid string) {
440 log.Printf("getting onemore: %s", xid)
441 if depth >= maxdepth {
442 log.Printf("in too deep")
443 return
444 }
445 obj, err := GetJunkHardMode(xid)
446 if err != nil {
447 log.Printf("error getting onemore: %s: %s", xid, err)
448 return
449 }
450 depth++
451 xonkxonkfn(obj, originate(xid))
452 depth--
453 }
454
455 xonkxonkfn = func(item junk.Junk, origin string) *Honk {
456 // id, _ := item.GetString( "id")
457 what, _ := item.GetString("type")
458 dt, _ := item.GetString("published")
459
460 var err error
461 var xid, rid, url, content, precis, convoy string
462 var replies []string
463 var obj junk.Junk
464 var ok bool
465 isUpdate := false
466 switch what {
467 case "Delete":
468 obj, ok = item.GetMap("object")
469 if ok {
470 xid, _ = obj.GetString("id")
471 } else {
472 xid, _ = item.GetString("object")
473 }
474 if xid == "" {
475 return nil
476 }
477 if originate(xid) != origin {
478 log.Printf("forged delete: %s", xid)
479 return nil
480 }
481 log.Printf("eradicating %s", xid)
482 eradicatexonk(user.ID, xid)
483 return nil
484 case "Tombstone":
485 xid, _ = item.GetString("id")
486 if xid == "" {
487 return nil
488 }
489 if originate(xid) != origin {
490 log.Printf("forged delete: %s", xid)
491 return nil
492 }
493 log.Printf("eradicating %s", xid)
494 eradicatexonk(user.ID, xid)
495 return nil
496 case "Announce":
497 obj, ok = item.GetMap("object")
498 if ok {
499 xid, _ = obj.GetString("id")
500 } else {
501 xid, _ = item.GetString("object")
502 }
503 if !needxonkid(user, xid) {
504 return nil
505 }
506 log.Printf("getting bonk: %s", xid)
507 obj, err = GetJunkHardMode(xid)
508 if err != nil {
509 log.Printf("error getting bonk: %s: %s", xid, err)
510 }
511 origin = originate(xid)
512 what = "bonk"
513 case "Update":
514 isUpdate = true
515 fallthrough
516 case "Create":
517 obj, ok = item.GetMap("object")
518 if !ok {
519 xid, _ = item.GetString("object")
520 log.Printf("getting created honk: %s", xid)
521 obj, err = GetJunkHardMode(xid)
522 if err != nil {
523 log.Printf("error getting creation: %s", err)
524 }
525 }
526 what = "honk"
527 if obj != nil {
528 t, _ := obj.GetString("type")
529 switch t {
530 case "Event":
531 what = "event"
532 }
533 }
534 case "Read":
535 xid, ok = item.GetString("object")
536 if ok {
537 if !needxonkid(user, xid) {
538 log.Printf("don't need read obj: %s", xid)
539 return nil
540 }
541 obj, err = GetJunkHardMode(xid)
542 if err != nil {
543 log.Printf("error getting read: %s", err)
544 return nil
545 }
546 return xonkxonkfn(obj, originate(xid))
547 }
548 return nil
549 case "Audio":
550 fallthrough
551 case "Video":
552 fallthrough
553 case "Question":
554 fallthrough
555 case "Note":
556 fallthrough
557 case "Article":
558 fallthrough
559 case "Page":
560 obj = item
561 what = "honk"
562 case "Event":
563 obj = item
564 what = "event"
565 default:
566 log.Printf("unknown activity: %s", what)
567 fd, _ := os.OpenFile("savedinbox.json", os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
568 item.Write(fd)
569 io.WriteString(fd, "\n")
570 fd.Close()
571 return nil
572 }
573
574 if obj != nil {
575 _, ok := obj.GetString("diaspora:guid")
576 if ok {
577 // friendica does the silliest bonks
578 c, ok := obj.GetString("source", "content")
579 if ok {
580 re_link := regexp.MustCompile(`link='([^']*)'`)
581 m := re_link.FindStringSubmatch(c)
582 if len(m) > 1 {
583 xid := m[1]
584 log.Printf("getting friendica flavored bonk: %s", xid)
585 if !needxonkid(user, xid) {
586 return nil
587 }
588 newobj, err := GetJunkHardMode(xid)
589 if err != nil {
590 log.Printf("error getting bonk: %s: %s", xid, err)
591 } else {
592 obj = newobj
593 origin = originate(xid)
594 what = "bonk"
595 }
596 }
597 }
598 }
599 }
600
601 var xonk Honk
602 // early init
603 xonk.UserID = user.ID
604 xonk.Honker, _ = item.GetString("actor")
605 if xonk.Honker == "" {
606 xonk.Honker, _ = item.GetString("attributedTo")
607 }
608 if obj != nil {
609 if xonk.Honker == "" {
610 xonk.Honker = extractattrto(obj)
611 }
612 xonk.Oonker = extractattrto(obj)
613 if xonk.Oonker == xonk.Honker {
614 xonk.Oonker = ""
615 }
616 xonk.Audience = newphone(nil, obj)
617 }
618 xonk.Audience = append(xonk.Audience, xonk.Honker)
619 xonk.Audience = oneofakind(xonk.Audience)
620
621 var mentions []string
622 if obj != nil {
623 ot, _ := obj.GetString("type")
624 url, _ = obj.GetString("url")
625 dt2, ok := obj.GetString("published")
626 if ok {
627 dt = dt2
628 }
629 xid, _ = obj.GetString("id")
630 precis, _ = obj.GetString("summary")
631 if precis == "" {
632 precis, _ = obj.GetString("name")
633 }
634 content, _ = obj.GetString("content")
635 if !strings.HasPrefix(content, "<p>") {
636 content = "<p>" + content
637 }
638 sens, _ := obj["sensitive"].(bool)
639 if sens && precis == "" {
640 precis = "unspecified horror"
641 }
642 rid, ok = obj.GetString("inReplyTo")
643 if !ok {
644 robj, ok := obj.GetMap("inReplyTo")
645 if ok {
646 rid, _ = robj.GetString("id")
647 }
648 }
649 convoy, _ = obj.GetString("context")
650 if convoy == "" {
651 convoy, _ = obj.GetString("conversation")
652 }
653 if ot == "Question" {
654 if what == "honk" {
655 what = "qonk"
656 }
657 content += "<ul>"
658 ans, _ := obj.GetArray("oneOf")
659 for _, ai := range ans {
660 a, ok := ai.(junk.Junk)
661 if !ok {
662 continue
663 }
664 as, _ := a.GetString("name")
665 content += "<li>" + as
666 }
667 ans, _ = obj.GetArray("anyOf")
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 content += "</ul>"
677 }
678 if what == "honk" && rid != "" {
679 what = "tonk"
680 }
681 atts, _ := obj.GetArray("attachment")
682 for i, atti := range atts {
683 att, ok := atti.(junk.Junk)
684 if !ok {
685 continue
686 }
687 at, _ := att.GetString("type")
688 mt, _ := att.GetString("mediaType")
689 u, _ := att.GetString("url")
690 name, _ := att.GetString("name")
691 desc, _ := att.GetString("summary")
692 if desc == "" {
693 desc = name
694 }
695 localize := false
696 if i > 4 {
697 log.Printf("excessive attachment: %s", at)
698 } else if at == "Document" || at == "Image" {
699 mt = strings.ToLower(mt)
700 log.Printf("attachment: %s %s", mt, u)
701 if mt == "text/plain" || strings.HasPrefix(mt, "image") {
702 localize = true
703 }
704 } else {
705 log.Printf("unknown attachment: %s", at)
706 }
707 if skipMedia(&xonk) {
708 localize = false
709 }
710 donk := savedonk(u, name, desc, mt, localize)
711 if donk != nil {
712 xonk.Donks = append(xonk.Donks, donk)
713 }
714 }
715 tags, _ := obj.GetArray("tag")
716 for _, tagi := range tags {
717 tag, ok := tagi.(junk.Junk)
718 if !ok {
719 continue
720 }
721 tt, _ := tag.GetString("type")
722 name, _ := tag.GetString("name")
723 desc, _ := tag.GetString("summary")
724 if desc == "" {
725 desc = name
726 }
727 if tt == "Emoji" {
728 icon, _ := tag.GetMap("icon")
729 mt, _ := icon.GetString("mediaType")
730 if mt == "" {
731 mt = "image/png"
732 }
733 u, _ := icon.GetString("url")
734 donk := savedonk(u, name, desc, mt, true)
735 if donk != nil {
736 xonk.Donks = append(xonk.Donks, donk)
737 }
738 }
739 if tt == "Hashtag" {
740 if name == "" || name == "#" {
741 // skip it
742 } else {
743 if name[0] != '#' {
744 name = "#" + name
745 }
746 xonk.Onts = append(xonk.Onts, name)
747 }
748 }
749 if tt == "Place" {
750 p := new(Place)
751 p.Name = name
752 p.Latitude, _ = tag["latitude"].(float64)
753 p.Longitude, _ = tag["longitude"].(float64)
754 p.Url, _ = tag.GetString("url")
755 xonk.Place = p
756 }
757 if tt == "Mention" {
758 m, _ := tag.GetString("href")
759 mentions = append(mentions, m)
760 }
761 }
762 starttime, ok := obj.GetString("startTime")
763 if ok {
764 start, err := time.Parse(time.RFC3339, starttime)
765 if err == nil {
766 t := new(Time)
767 t.StartTime = start
768 endtime, _ := obj.GetString("endTime")
769 t.EndTime, _ = time.Parse(time.RFC3339, endtime)
770 dura, _ := obj.GetString("duration")
771 if strings.HasPrefix(dura, "PT") {
772 dura = strings.ToLower(dura[2:])
773 d, _ := time.ParseDuration(dura)
774 t.Duration = Duration(d)
775 }
776 xonk.Time = t
777 }
778 }
779 loca, ok := obj.GetMap("location")
780 if ok {
781 tt, _ := loca.GetString("type")
782 name, _ := loca.GetString("name")
783 if tt == "Place" {
784 p := new(Place)
785 p.Name = name
786 p.Latitude, _ = loca["latitude"].(float64)
787 p.Longitude, _ = loca["longitude"].(float64)
788 p.Url, _ = loca.GetString("url")
789 xonk.Place = p
790 }
791 }
792
793 xonk.Onts = oneofakind(xonk.Onts)
794 replyobj, ok := obj.GetMap("replies")
795 if ok {
796 items, ok := replyobj.GetArray("items")
797 if !ok {
798 first, ok := replyobj.GetMap("first")
799 if ok {
800 items, _ = first.GetArray("items")
801 }
802 }
803 for _, repl := range items {
804 s, ok := repl.(string)
805 if ok {
806 replies = append(replies, s)
807 }
808 }
809 }
810
811 }
812 if originate(xid) != origin {
813 log.Printf("original sin: %s <> %s", xid, origin)
814 item.Write(os.Stdout)
815 return nil
816 }
817
818 if currenttid == "" {
819 currenttid = convoy
820 }
821
822 if len(content) > 90001 {
823 log.Printf("content too long. truncating")
824 content = content[:90001]
825 }
826
827 // grab any inline imgs
828 imgfilt := htfilter.New()
829 imgfilt.Imager = inlineimgs
830 imgfilt.String(content)
831
832 // init xonk
833 xonk.What = what
834 xonk.XID = xid
835 xonk.RID = rid
836 xonk.Date, _ = time.Parse(time.RFC3339, dt)
837 xonk.URL = url
838 xonk.Noise = content
839 xonk.Precis = precis
840 xonk.Format = "html"
841 xonk.Convoy = convoy
842 for _, m := range mentions {
843 if m == user.URL {
844 xonk.Whofore = 1
845 }
846 }
847
848 if isUpdate {
849 log.Printf("something has changed! %s", xonk.XID)
850 prev := getxonk(user.ID, xonk.XID)
851 if prev == nil {
852 log.Printf("didn't find old version for update: %s", xonk.XID)
853 isUpdate = false
854 } else {
855 prev.Noise = xonk.Noise
856 prev.Precis = xonk.Precis
857 prev.Date = xonk.Date
858 prev.Donks = xonk.Donks
859 prev.Onts = xonk.Onts
860 prev.Place = xonk.Place
861 updatehonk(prev)
862 }
863 }
864 if !isUpdate && needxonk(user, &xonk) {
865 if strings.HasSuffix(convoy, "#context") {
866 // friendica...
867 if rid != "" {
868 convoy = ""
869 } else {
870 convoy = url
871 }
872 }
873 if rid != "" {
874 if needxonkid(user, rid) {
875 goingup++
876 saveonemore(rid)
877 goingup--
878 }
879 if convoy == "" {
880 xx := getxonk(user.ID, rid)
881 if xx != nil {
882 convoy = xx.Convoy
883 }
884 }
885 }
886 if convoy == "" {
887 convoy = currenttid
888 }
889 if convoy == "" {
890 convoy = "missing-" + xfiltrate()
891 currenttid = convoy
892 }
893 xonk.Convoy = convoy
894 savexonk(&xonk)
895 }
896 if goingup == 0 {
897 for _, replid := range replies {
898 if needxonkid(user, replid) {
899 log.Printf("missing a reply: %s", replid)
900 saveonemore(replid)
901 }
902 }
903 }
904 return &xonk
905 }
906
907 return xonkxonkfn(item, origin)
908}
909
910func rubadubdub(user *WhatAbout, req junk.Junk) {
911 xid, _ := req.GetString("id")
912 actor, _ := req.GetString("actor")
913 j := junk.New()
914 j["@context"] = itiswhatitis
915 j["id"] = user.URL + "/dub/" + url.QueryEscape(xid)
916 j["type"] = "Accept"
917 j["actor"] = user.URL
918 j["to"] = actor
919 j["published"] = time.Now().UTC().Format(time.RFC3339)
920 j["object"] = req
921
922 var buf bytes.Buffer
923 j.Write(&buf)
924 msg := buf.Bytes()
925
926 deliverate(0, user.Name, actor, msg)
927}
928
929func itakeitallback(user *WhatAbout, xid string) {
930 j := junk.New()
931 j["@context"] = itiswhatitis
932 j["id"] = user.URL + "/unsub/" + url.QueryEscape(xid)
933 j["type"] = "Undo"
934 j["actor"] = user.URL
935 j["to"] = xid
936 f := junk.New()
937 f["id"] = user.URL + "/sub/" + url.QueryEscape(xid)
938 f["type"] = "Follow"
939 f["actor"] = user.URL
940 f["to"] = xid
941 f["object"] = xid
942 j["object"] = f
943 j["published"] = time.Now().UTC().Format(time.RFC3339)
944
945 var buf bytes.Buffer
946 j.Write(&buf)
947 msg := buf.Bytes()
948
949 deliverate(0, user.Name, xid, msg)
950}
951
952func subsub(user *WhatAbout, xid string) {
953 if xid == "" {
954 log.Printf("can't subscribe to empty")
955 return
956 }
957 j := junk.New()
958 j["@context"] = itiswhatitis
959 j["id"] = user.URL + "/sub/" + url.QueryEscape(xid)
960 j["type"] = "Follow"
961 j["actor"] = user.URL
962 j["to"] = xid
963 j["object"] = xid
964 j["published"] = time.Now().UTC().Format(time.RFC3339)
965
966 var buf bytes.Buffer
967 j.Write(&buf)
968 msg := buf.Bytes()
969
970 deliverate(0, user.Name, xid, msg)
971}
972
973// returns activity, object
974func jonkjonk(user *WhatAbout, h *Honk) (junk.Junk, junk.Junk) {
975 dt := h.Date.Format(time.RFC3339)
976 var jo junk.Junk
977 j := junk.New()
978 j["id"] = user.URL + "/" + h.What + "/" + shortxid(h.XID)
979 j["actor"] = user.URL
980 j["published"] = dt
981 if h.Public {
982 j["to"] = []string{h.Audience[0], user.URL + "/followers"}
983 } else {
984 j["to"] = h.Audience[0]
985 }
986 if len(h.Audience) > 1 {
987 j["cc"] = h.Audience[1:]
988 }
989
990 switch h.What {
991 case "update":
992 fallthrough
993 case "tonk":
994 fallthrough
995 case "event":
996 fallthrough
997 case "honk":
998 j["type"] = "Create"
999 if h.What == "update" {
1000 j["type"] = "Update"
1001 }
1002
1003 jo = junk.New()
1004 jo["id"] = h.XID
1005 jo["type"] = "Note"
1006 if h.What == "event" {
1007 jo["type"] = "Event"
1008 }
1009 jo["published"] = dt
1010 jo["url"] = h.XID
1011 jo["attributedTo"] = user.URL
1012 if h.RID != "" {
1013 jo["inReplyTo"] = h.RID
1014 }
1015 if h.Convoy != "" {
1016 jo["context"] = h.Convoy
1017 jo["conversation"] = h.Convoy
1018 }
1019 jo["to"] = h.Audience[0]
1020 if len(h.Audience) > 1 {
1021 jo["cc"] = h.Audience[1:]
1022 }
1023 if !h.Public {
1024 jo["directMessage"] = true
1025 }
1026 translate(h)
1027 h.Noise = re_memes.ReplaceAllString(h.Noise, "")
1028 jo["summary"] = html.EscapeString(h.Precis)
1029 jo["content"] = ontologize(mentionize(h.Noise))
1030 if strings.HasPrefix(h.Precis, "DZ:") {
1031 jo["sensitive"] = true
1032 }
1033
1034 var replies []string
1035 for _, reply := range h.Replies {
1036 replies = append(replies, reply.XID)
1037 }
1038 if len(replies) > 0 {
1039 jr := junk.New()
1040 jr["type"] = "Collection"
1041 jr["totalItems"] = len(replies)
1042 jr["items"] = replies
1043 jo["replies"] = jr
1044 }
1045
1046 var tags []junk.Junk
1047 for _, m := range bunchofgrapes(h.Noise) {
1048 t := junk.New()
1049 t["type"] = "Mention"
1050 t["name"] = m.who
1051 t["href"] = m.where
1052 tags = append(tags, t)
1053 }
1054 for _, o := range h.Onts {
1055 t := junk.New()
1056 t["type"] = "Hashtag"
1057 o = strings.ToLower(o)
1058 t["href"] = fmt.Sprintf("https://%s/o/%s", serverName, o[1:])
1059 t["name"] = o
1060 tags = append(tags, t)
1061 }
1062 for _, e := range herdofemus(h.Noise) {
1063 t := junk.New()
1064 t["id"] = e.ID
1065 t["type"] = "Emoji"
1066 t["name"] = e.Name
1067 i := junk.New()
1068 i["type"] = "Image"
1069 i["mediaType"] = "image/png"
1070 i["url"] = e.ID
1071 t["icon"] = i
1072 tags = append(tags, t)
1073 }
1074 if p := h.Place; p != nil {
1075 t := junk.New()
1076 t["type"] = "Place"
1077 t["name"] = p.Name
1078 t["latitude"] = p.Latitude
1079 t["longitude"] = p.Longitude
1080 t["url"] = p.Url
1081 if h.What == "event" {
1082 jo["location"] = t
1083 } else {
1084 tags = append(tags, t)
1085 }
1086 }
1087 if len(tags) > 0 {
1088 jo["tag"] = tags
1089 }
1090 if t := h.Time; t != nil {
1091 jo["startTime"] = t.StartTime.Format(time.RFC3339)
1092 if t.Duration != 0 {
1093 jo["duration"] = "PT" + strings.ToUpper(t.Duration.String())
1094 }
1095 }
1096 var atts []junk.Junk
1097 for _, d := range h.Donks {
1098 if re_emus.MatchString(d.Name) {
1099 continue
1100 }
1101 jd := junk.New()
1102 jd["mediaType"] = d.Media
1103 jd["name"] = d.Name
1104 jd["summary"] = html.EscapeString(d.Desc)
1105 jd["type"] = "Document"
1106 jd["url"] = d.URL
1107 atts = append(atts, jd)
1108 }
1109 if len(atts) > 0 {
1110 jo["attachment"] = atts
1111 }
1112 j["object"] = jo
1113 case "bonk":
1114 j["type"] = "Announce"
1115 if h.Convoy != "" {
1116 j["context"] = h.Convoy
1117 }
1118 j["object"] = h.XID
1119 case "unbonk":
1120 b := junk.New()
1121 b["id"] = user.URL + "/" + "bonk" + "/" + shortxid(h.XID)
1122 b["type"] = "Announce"
1123 b["actor"] = user.URL
1124 if h.Convoy != "" {
1125 b["context"] = h.Convoy
1126 }
1127 b["object"] = h.XID
1128 j["type"] = "Undo"
1129 j["object"] = b
1130 case "zonk":
1131 j["type"] = "Delete"
1132 j["object"] = h.XID
1133 case "ack":
1134 j["type"] = "Read"
1135 j["object"] = h.XID
1136 case "deack":
1137 b := junk.New()
1138 b["id"] = user.URL + "/" + "ack" + "/" + shortxid(h.XID)
1139 b["type"] = "Read"
1140 b["actor"] = user.URL
1141 b["object"] = h.XID
1142 j["type"] = "Undo"
1143 j["object"] = b
1144 }
1145
1146 return j, jo
1147}
1148
1149var oldjonks = cache.New(cache.Options{Filler: func(xid string) ([]byte, bool) {
1150 row := stmtAnyXonk.QueryRow(xid)
1151 honk := scanhonk(row)
1152 if honk == nil || !honk.Public {
1153 return nil, true
1154 }
1155 user, _ := butwhatabout(honk.Username)
1156 rawhonks := gethonksbyconvoy(honk.UserID, honk.Convoy, 0)
1157 reversehonks(rawhonks)
1158 for _, h := range rawhonks {
1159 if h.RID == honk.XID && h.Public && (h.Whofore == 2 || h.IsAcked()) {
1160 honk.Replies = append(honk.Replies, h)
1161 }
1162 }
1163 donksforhonks([]*Honk{honk})
1164 _, j := jonkjonk(user, honk)
1165 j["@context"] = itiswhatitis
1166 var buf bytes.Buffer
1167 j.Write(&buf)
1168 return buf.Bytes(), true
1169}})
1170
1171func gimmejonk(xid string) ([]byte, bool) {
1172 var j []byte
1173 ok := oldjonks.Get(xid, &j)
1174 return j, ok
1175}
1176
1177func honkworldwide(user *WhatAbout, honk *Honk) {
1178 jonk, _ := jonkjonk(user, honk)
1179 jonk["@context"] = itiswhatitis
1180 var buf bytes.Buffer
1181 jonk.Write(&buf)
1182 msg := buf.Bytes()
1183
1184 rcpts := make(map[string]bool)
1185 for _, a := range honk.Audience {
1186 if a == thewholeworld || a == user.URL || strings.HasSuffix(a, "/followers") {
1187 continue
1188 }
1189 var box *Box
1190 ok := boxofboxes.Get(a, &box)
1191 if ok && honk.Public && box.Shared != "" {
1192 rcpts["%"+box.Shared] = true
1193 } else {
1194 rcpts[a] = true
1195 }
1196 }
1197 if honk.Public {
1198 for _, h := range getdubs(user.ID) {
1199 if h.XID == user.URL {
1200 continue
1201 }
1202 var box *Box
1203 ok := boxofboxes.Get(h.XID, &box)
1204 if ok && box.Shared != "" {
1205 rcpts["%"+box.Shared] = true
1206 } else {
1207 rcpts[h.XID] = true
1208 }
1209 }
1210 }
1211 for a := range rcpts {
1212 go deliverate(0, user.Name, a, msg)
1213 }
1214}
1215
1216var oldjonkers = cache.New(cache.Options{Filler: func(name string) ([]byte, bool) {
1217 user, err := butwhatabout(name)
1218 if err != nil {
1219 return nil, false
1220 }
1221 about := markitzero(user.About)
1222
1223 j := junk.New()
1224 j["@context"] = itiswhatitis
1225 j["id"] = user.URL
1226 j["type"] = "Person"
1227 j["inbox"] = user.URL + "/inbox"
1228 j["outbox"] = user.URL + "/outbox"
1229 j["followers"] = user.URL + "/followers"
1230 j["following"] = user.URL + "/following"
1231 j["name"] = user.Display
1232 j["preferredUsername"] = user.Name
1233 j["summary"] = about
1234 j["url"] = user.URL
1235 a := junk.New()
1236 a["type"] = "Image"
1237 a["mediaType"] = "image/png"
1238 a["url"] = fmt.Sprintf("https://%s/a?a=%s", serverName, url.QueryEscape(user.URL))
1239 j["icon"] = a
1240 k := junk.New()
1241 k["id"] = user.URL + "#key"
1242 k["owner"] = user.URL
1243 k["publicKeyPem"] = user.Key
1244 j["publicKey"] = k
1245
1246 var buf bytes.Buffer
1247 j.Write(&buf)
1248 return buf.Bytes(), true
1249}, Duration: 1 * time.Minute})
1250
1251func asjonker(name string) ([]byte, bool) {
1252 var j []byte
1253 ok := oldjonkers.Get(name, &j)
1254 return j, ok
1255}
1256
1257var handfull = cache.New(cache.Options{Filler: func(name string) (string, bool) {
1258 m := strings.Split(name, "@")
1259 if len(m) != 2 {
1260 log.Printf("bad fish name: %s", name)
1261 return "", true
1262 }
1263 row := stmtGetXonker.QueryRow(name, "fishname")
1264 var href string
1265 err := row.Scan(&href)
1266 if err == nil {
1267 return href, true
1268 }
1269 log.Printf("fishing for %s", name)
1270 j, err := GetJunkFast(fmt.Sprintf("https://%s/.well-known/webfinger?resource=acct:%s", m[1], name))
1271 if err != nil {
1272 log.Printf("failed to go fish %s: %s", name, err)
1273 return "", true
1274 }
1275 links, _ := j.GetArray("links")
1276 for _, li := range links {
1277 l, ok := li.(junk.Junk)
1278 if !ok {
1279 continue
1280 }
1281 href, _ := l.GetString("href")
1282 rel, _ := l.GetString("rel")
1283 t, _ := l.GetString("type")
1284 if rel == "self" && friendorfoe(t) {
1285 _, err := stmtSaveXonker.Exec(name, href, "fishname")
1286 if err != nil {
1287 log.Printf("error saving fishname: %s", err)
1288 }
1289 return href, true
1290 }
1291 }
1292 return href, true
1293}})
1294
1295func gofish(name string) string {
1296 if name[0] == '@' {
1297 name = name[1:]
1298 }
1299 var href string
1300 handfull.Get(name, &href)
1301 return href
1302}
1303
1304func isactor(t string) bool {
1305 switch t {
1306 case "Person":
1307 case "Organization":
1308 case "Application":
1309 case "Service":
1310 default:
1311 return false
1312 }
1313 return true
1314}
1315
1316func investigate(name string) (*Honker, error) {
1317 if name == "" {
1318 return nil, fmt.Errorf("no name")
1319 }
1320 if name[0] == '@' {
1321 name = gofish(name)
1322 }
1323 if name == "" {
1324 return nil, fmt.Errorf("no name")
1325 }
1326 obj, err := GetJunkFast(name)
1327 if err != nil {
1328 return nil, err
1329 }
1330 t, _ := obj.GetString("type")
1331 if !isactor(t) {
1332 return nil, fmt.Errorf("not a person")
1333 }
1334 xid, _ := obj.GetString("id")
1335 handle, _ := obj.GetString("preferredUsername")
1336 return &Honker{XID: xid, Handle: handle}, nil
1337}