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