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 }
398 return ""
399}
400
401func xonksaver(user *WhatAbout, item junk.Junk, origin string) *Honk {
402 depth := 0
403 maxdepth := 10
404 currenttid := ""
405 goingup := 0
406 var xonkxonkfn func(item junk.Junk, origin string) *Honk
407
408 saveonemore := func(xid string) {
409 log.Printf("getting onemore: %s", xid)
410 if depth >= maxdepth {
411 log.Printf("in too deep")
412 return
413 }
414 obj, err := GetJunkHardMode(xid)
415 if err != nil {
416 log.Printf("error getting onemore: %s: %s", xid, err)
417 return
418 }
419 depth++
420 xonkxonkfn(obj, originate(xid))
421 depth--
422 }
423
424 xonkxonkfn = func(item junk.Junk, origin string) *Honk {
425 // id, _ := item.GetString( "id")
426 what, _ := item.GetString("type")
427 dt, _ := item.GetString("published")
428
429 var err error
430 var xid, rid, url, content, precis, convoy string
431 var replies []string
432 var obj junk.Junk
433 var ok bool
434 isUpdate := false
435 switch what {
436 case "Delete":
437 obj, ok = item.GetMap("object")
438 if ok {
439 xid, _ = obj.GetString("id")
440 } else {
441 xid, _ = item.GetString("object")
442 }
443 if xid == "" {
444 return nil
445 }
446 if originate(xid) != origin {
447 log.Printf("forged delete: %s", xid)
448 return nil
449 }
450 log.Printf("eradicating %s", xid)
451 eradicatexonk(user.ID, xid)
452 return nil
453 case "Tombstone":
454 xid, _ = item.GetString("id")
455 if xid == "" {
456 return nil
457 }
458 if originate(xid) != origin {
459 log.Printf("forged delete: %s", xid)
460 return nil
461 }
462 log.Printf("eradicating %s", xid)
463 eradicatexonk(user.ID, xid)
464 return nil
465 case "Announce":
466 obj, ok = item.GetMap("object")
467 if ok {
468 xid, _ = obj.GetString("id")
469 } else {
470 xid, _ = item.GetString("object")
471 }
472 if !needxonkid(user, xid) {
473 return nil
474 }
475 log.Printf("getting bonk: %s", xid)
476 obj, err = GetJunkHardMode(xid)
477 if err != nil {
478 log.Printf("error getting bonk: %s: %s", xid, err)
479 }
480 origin = originate(xid)
481 what = "bonk"
482 case "Update":
483 isUpdate = true
484 fallthrough
485 case "Create":
486 obj, ok = item.GetMap("object")
487 if !ok {
488 xid, _ = item.GetString("object")
489 log.Printf("getting created honk: %s", xid)
490 obj, err = GetJunkHardMode(xid)
491 if err != nil {
492 log.Printf("error getting creation: %s", err)
493 }
494 }
495 what = "honk"
496 case "Read":
497 xid, ok = item.GetString("object")
498 if ok {
499 if !needxonkid(user, xid) {
500 log.Printf("don't need read obj: %s", xid)
501 return nil
502 }
503 obj, err = GetJunkHardMode(xid)
504 if err != nil {
505 log.Printf("error getting read: %s", err)
506 return nil
507 }
508 return xonkxonkfn(obj, originate(xid))
509 }
510 return nil
511 case "Audio":
512 fallthrough
513 case "Video":
514 fallthrough
515 case "Question":
516 fallthrough
517 case "Note":
518 fallthrough
519 case "Article":
520 fallthrough
521 case "Page":
522 obj = item
523 what = "honk"
524 case "Event":
525 obj = item
526 what = "event"
527 default:
528 log.Printf("unknown activity: %s", what)
529 fd, _ := os.OpenFile("savedinbox.json", os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
530 item.Write(fd)
531 io.WriteString(fd, "\n")
532 fd.Close()
533 return nil
534 }
535
536 if obj != nil {
537 _, ok := obj.GetString("diaspora:guid")
538 if ok {
539 log.Printf("looks like friendica")
540 // friendica does the silliest bonks
541 c, ok := obj.FindString([]string{"source", "content"})
542 if ok {
543 log.Printf("got content")
544 re_link := regexp.MustCompile(`link='([^']*)'`)
545 m := re_link.FindStringSubmatch(c)
546 if len(m) > 1 {
547 xid := m[1]
548 log.Printf("getting friendica flavored bonk: %s", xid)
549 if !needxonkid(user, xid) {
550 return nil
551 }
552 newobj, err := GetJunkHardMode(xid)
553 if err != nil {
554 log.Printf("error getting bonk: %s: %s", xid, err)
555 } else {
556 obj = newobj
557 origin = originate(xid)
558 what = "bonk"
559 }
560 } else {
561 log.Printf("can't find link")
562 }
563 } else {
564 log.Printf("no source content")
565 }
566 }
567 }
568
569 var xonk Honk
570 // early init
571 xonk.UserID = user.ID
572 xonk.Honker, _ = item.GetString("actor")
573 if xonk.Honker == "" {
574 xonk.Honker, _ = item.GetString("attributedTo")
575 }
576 if obj != nil {
577 if xonk.Honker == "" {
578 xonk.Honker = extractattrto(obj)
579 }
580 xonk.Oonker = extractattrto(obj)
581 if xonk.Oonker == xonk.Honker {
582 xonk.Oonker = ""
583 }
584 xonk.Audience = newphone(nil, obj)
585 }
586 xonk.Audience = append(xonk.Audience, xonk.Honker)
587 xonk.Audience = oneofakind(xonk.Audience)
588 for _, a := range xonk.Audience {
589 if a == user.URL {
590 xonk.Whofore = 1
591 }
592 }
593
594 if obj != nil {
595 ot, _ := obj.GetString("type")
596 url, _ = obj.GetString("url")
597 dt2, ok := obj.GetString("published")
598 if ok {
599 dt = dt2
600 }
601 xid, _ = obj.GetString("id")
602 precis, _ = obj.GetString("summary")
603 if precis == "" {
604 precis, _ = obj.GetString("name")
605 }
606 content, _ = obj.GetString("content")
607 if !strings.HasPrefix(content, "<p>") {
608 content = "<p>" + content
609 }
610 sens, _ := obj["sensitive"].(bool)
611 if sens && precis == "" {
612 precis = "unspecified horror"
613 }
614 rid, ok = obj.GetString("inReplyTo")
615 if !ok {
616 robj, ok := obj.GetMap("inReplyTo")
617 if ok {
618 rid, _ = robj.GetString("id")
619 }
620 }
621 convoy, _ = obj.GetString("context")
622 if strings.HasSuffix(convoy, "#context") &&
623 originate(convoy) != originate(xid) {
624 // friendica...
625 convoy = ""
626 }
627 if convoy == "" {
628 convoy, _ = obj.GetString("conversation")
629 }
630 if ot == "Question" {
631 if what == "honk" {
632 what = "qonk"
633 }
634 content += "<ul>"
635 ans, _ := obj.GetArray("oneOf")
636 for _, ai := range ans {
637 a, ok := ai.(junk.Junk)
638 if !ok {
639 continue
640 }
641 as, _ := a.GetString("name")
642 content += "<li>" + as
643 }
644 ans, _ = obj.GetArray("anyOf")
645 for _, ai := range ans {
646 a, ok := ai.(junk.Junk)
647 if !ok {
648 continue
649 }
650 as, _ := a.GetString("name")
651 content += "<li>" + as
652 }
653 content += "</ul>"
654 }
655 if what == "honk" && rid != "" {
656 what = "tonk"
657 }
658 atts, _ := obj.GetArray("attachment")
659 for i, atti := range atts {
660 att, ok := atti.(junk.Junk)
661 if !ok {
662 continue
663 }
664 at, _ := att.GetString("type")
665 mt, _ := att.GetString("mediaType")
666 u, _ := att.GetString("url")
667 name, _ := att.GetString("name")
668 desc, _ := att.GetString("summary")
669 if desc == "" {
670 desc = name
671 }
672 localize := false
673 if i > 4 {
674 log.Printf("excessive attachment: %s", at)
675 } else if at == "Document" || at == "Image" {
676 mt = strings.ToLower(mt)
677 log.Printf("attachment: %s %s", mt, u)
678 if mt == "text/plain" || strings.HasPrefix(mt, "image") {
679 localize = true
680 }
681 } else {
682 log.Printf("unknown attachment: %s", at)
683 }
684 if skipMedia(&xonk) {
685 localize = false
686 }
687 donk := savedonk(u, name, desc, mt, localize)
688 if donk != nil {
689 xonk.Donks = append(xonk.Donks, donk)
690 }
691 }
692 tags, _ := obj.GetArray("tag")
693 for _, tagi := range tags {
694 tag, ok := tagi.(junk.Junk)
695 if !ok {
696 continue
697 }
698 tt, _ := tag.GetString("type")
699 name, _ := tag.GetString("name")
700 desc, _ := tag.GetString("summary")
701 if desc == "" {
702 desc = name
703 }
704 if tt == "Emoji" {
705 icon, _ := tag.GetMap("icon")
706 mt, _ := icon.GetString("mediaType")
707 if mt == "" {
708 mt = "image/png"
709 }
710 u, _ := icon.GetString("url")
711 donk := savedonk(u, name, desc, mt, true)
712 if donk != nil {
713 xonk.Donks = append(xonk.Donks, donk)
714 }
715 }
716 if tt == "Hashtag" {
717 if len(name) > 1 && name[0] == '#' {
718 xonk.Onts = append(xonk.Onts, name)
719 } else {
720 log.Printf("bogus hashtag name: %s", name)
721 }
722 }
723 if tt == "Place" {
724 p := new(Place)
725 p.Name = name
726 p.Latitude, _ = tag["latitude"].(float64)
727 p.Longitude, _ = tag["longitude"].(float64)
728 p.Url, _ = tag.GetString("url")
729 xonk.Place = p
730 }
731 }
732 starttime, ok := obj.GetString("startTime")
733 if ok {
734 start, err := time.Parse(time.RFC3339, starttime)
735 if err == nil {
736 t := new(Time)
737 t.StartTime = start
738 endtime, _ := obj.GetString("endTime")
739 t.EndTime, _ = time.Parse(time.RFC3339, endtime)
740 dura, _ := obj.GetString("duration")
741 if strings.HasPrefix(dura, "PT") {
742 dura = strings.ToLower(dura[2:])
743 d, _ := time.ParseDuration(dura)
744 t.Duration = Duration(d)
745 }
746 xonk.Time = t
747 }
748 }
749 loca, ok := obj.GetMap("location")
750 if ok {
751 tt, _ := loca.GetString("type")
752 name, _ := loca.GetString("name")
753 if tt == "Place" {
754 p := new(Place)
755 p.Name = name
756 p.Latitude, _ = loca["latitude"].(float64)
757 p.Longitude, _ = loca["longitude"].(float64)
758 p.Url, _ = loca.GetString("url")
759 xonk.Place = p
760 }
761 }
762
763 xonk.Onts = oneofakind(xonk.Onts)
764 replyobj, ok := obj.GetMap("replies")
765 if ok {
766 items, ok := replyobj.GetArray("items")
767 if !ok {
768 first, ok := replyobj.GetMap("first")
769 if ok {
770 items, _ = first.GetArray("items")
771 }
772 }
773 for _, repl := range items {
774 s, ok := repl.(string)
775 if ok {
776 replies = append(replies, s)
777 }
778 }
779 }
780
781 }
782 if originate(xid) != origin {
783 log.Printf("original sin: %s <> %s", xid, origin)
784 item.Write(os.Stdout)
785 return nil
786 }
787
788 if currenttid == "" {
789 currenttid = convoy
790 }
791
792 if len(content) > 90001 {
793 log.Printf("content too long. truncating")
794 content = content[:90001]
795 }
796
797 // grab any inline imgs
798 imgfilt := htfilter.New()
799 imgfilt.Imager = inlineimgs
800 imgfilt.String(content)
801
802 // init xonk
803 xonk.What = what
804 xonk.XID = xid
805 xonk.RID = rid
806 xonk.Date, _ = time.Parse(time.RFC3339, dt)
807 xonk.URL = url
808 xonk.Noise = content
809 xonk.Precis = precis
810 xonk.Format = "html"
811 xonk.Convoy = convoy
812
813 if isUpdate {
814 log.Printf("something has changed! %s", xonk.XID)
815 prev := getxonk(user.ID, xonk.XID)
816 if prev == nil {
817 log.Printf("didn't find old version for update: %s", xonk.XID)
818 return nil
819 }
820 prev.Noise = xonk.Noise
821 prev.Precis = xonk.Precis
822 prev.Date = xonk.Date
823 prev.Donks = xonk.Donks
824 prev.Onts = xonk.Onts
825 prev.Place = xonk.Place
826 updatehonk(prev)
827 } else if needxonk(user, &xonk) {
828 if rid != "" {
829 if needxonkid(user, rid) {
830 goingup++
831 saveonemore(rid)
832 goingup--
833 }
834 if convoy == "" {
835 xx := getxonk(user.ID, rid)
836 if xx != nil {
837 convoy = xx.Convoy
838 }
839 }
840 }
841 if convoy == "" {
842 convoy = currenttid
843 }
844 if convoy == "" {
845 convoy = "missing-" + xfiltrate()
846 currenttid = convoy
847 }
848 xonk.Convoy = convoy
849 savexonk(&xonk)
850 }
851 if goingup == 0 {
852 for _, replid := range replies {
853 if needxonkid(user, replid) {
854 log.Printf("missing a reply: %s", replid)
855 saveonemore(replid)
856 }
857 }
858 }
859 return &xonk
860 }
861
862 return xonkxonkfn(item, origin)
863}
864
865func rubadubdub(user *WhatAbout, req junk.Junk) {
866 xid, _ := req.GetString("id")
867 actor, _ := req.GetString("actor")
868 j := junk.New()
869 j["@context"] = itiswhatitis
870 j["id"] = user.URL + "/dub/" + url.QueryEscape(xid)
871 j["type"] = "Accept"
872 j["actor"] = user.URL
873 j["to"] = actor
874 j["published"] = time.Now().UTC().Format(time.RFC3339)
875 j["object"] = req
876
877 var buf bytes.Buffer
878 j.Write(&buf)
879 msg := buf.Bytes()
880
881 deliverate(0, user.Name, actor, msg)
882}
883
884func itakeitallback(user *WhatAbout, xid string) {
885 j := junk.New()
886 j["@context"] = itiswhatitis
887 j["id"] = user.URL + "/unsub/" + url.QueryEscape(xid)
888 j["type"] = "Undo"
889 j["actor"] = user.URL
890 j["to"] = xid
891 f := junk.New()
892 f["id"] = user.URL + "/sub/" + url.QueryEscape(xid)
893 f["type"] = "Follow"
894 f["actor"] = user.URL
895 f["to"] = xid
896 f["object"] = xid
897 j["object"] = f
898 j["published"] = time.Now().UTC().Format(time.RFC3339)
899
900 var buf bytes.Buffer
901 j.Write(&buf)
902 msg := buf.Bytes()
903
904 deliverate(0, user.Name, xid, msg)
905}
906
907func subsub(user *WhatAbout, xid string) {
908 if xid == "" {
909 log.Printf("can't subscribe to empty")
910 return
911 }
912 j := junk.New()
913 j["@context"] = itiswhatitis
914 j["id"] = user.URL + "/sub/" + url.QueryEscape(xid)
915 j["type"] = "Follow"
916 j["actor"] = user.URL
917 j["to"] = xid
918 j["object"] = xid
919 j["published"] = time.Now().UTC().Format(time.RFC3339)
920
921 var buf bytes.Buffer
922 j.Write(&buf)
923 msg := buf.Bytes()
924
925 deliverate(0, user.Name, xid, msg)
926}
927
928// returns activity, object
929func jonkjonk(user *WhatAbout, h *Honk) (junk.Junk, junk.Junk) {
930 dt := h.Date.Format(time.RFC3339)
931 var jo junk.Junk
932 j := junk.New()
933 j["id"] = user.URL + "/" + h.What + "/" + shortxid(h.XID)
934 j["actor"] = user.URL
935 j["published"] = dt
936 if h.Public {
937 j["to"] = []string{h.Audience[0], user.URL + "/followers"}
938 } else {
939 j["to"] = h.Audience[0]
940 }
941 if len(h.Audience) > 1 {
942 j["cc"] = h.Audience[1:]
943 }
944
945 switch h.What {
946 case "update":
947 fallthrough
948 case "tonk":
949 fallthrough
950 case "event":
951 fallthrough
952 case "honk":
953 j["type"] = "Create"
954 if h.What == "update" {
955 j["type"] = "Update"
956 }
957
958 jo = junk.New()
959 jo["id"] = h.XID
960 jo["type"] = "Note"
961 if h.What == "event" {
962 jo["type"] = "Event"
963 }
964 jo["published"] = dt
965 jo["url"] = h.XID
966 jo["attributedTo"] = user.URL
967 if h.RID != "" {
968 jo["inReplyTo"] = h.RID
969 }
970 if h.Convoy != "" {
971 jo["context"] = h.Convoy
972 jo["conversation"] = h.Convoy
973 }
974 jo["to"] = h.Audience[0]
975 if len(h.Audience) > 1 {
976 jo["cc"] = h.Audience[1:]
977 }
978 if !h.Public {
979 jo["directMessage"] = true
980 }
981 translate(h)
982 h.Noise = re_memes.ReplaceAllString(h.Noise, "")
983 jo["summary"] = html.EscapeString(h.Precis)
984 jo["content"] = ontologize(mentionize(h.Noise))
985 if strings.HasPrefix(h.Precis, "DZ:") {
986 jo["sensitive"] = true
987 }
988
989 var replies []string
990 for _, reply := range h.Replies {
991 replies = append(replies, reply.XID)
992 }
993 if len(replies) > 0 {
994 jr := junk.New()
995 jr["type"] = "Collection"
996 jr["totalItems"] = len(replies)
997 jr["items"] = replies
998 jo["replies"] = jr
999 }
1000
1001 var tags []junk.Junk
1002 g := bunchofgrapes(h.Noise)
1003 for _, m := range g {
1004 t := junk.New()
1005 t["type"] = "Mention"
1006 t["name"] = m.who
1007 t["href"] = m.where
1008 tags = append(tags, t)
1009 }
1010 for _, o := range h.Onts {
1011 t := junk.New()
1012 t["type"] = "Hashtag"
1013 o = strings.ToLower(o)
1014 t["href"] = fmt.Sprintf("https://%s/o/%s", serverName, o[1:])
1015 t["name"] = o
1016 tags = append(tags, t)
1017 }
1018 herd := herdofemus(h.Noise)
1019 for _, e := range herd {
1020 t := junk.New()
1021 t["id"] = e.ID
1022 t["type"] = "Emoji"
1023 t["name"] = e.Name
1024 i := junk.New()
1025 i["type"] = "Image"
1026 i["mediaType"] = "image/png"
1027 i["url"] = e.ID
1028 t["icon"] = i
1029 tags = append(tags, t)
1030 }
1031 if p := h.Place; p != nil {
1032 t := junk.New()
1033 t["type"] = "Place"
1034 t["name"] = p.Name
1035 t["latitude"] = p.Latitude
1036 t["longitude"] = p.Longitude
1037 t["url"] = p.Url
1038 if h.What == "event" {
1039 jo["location"] = t
1040 } else {
1041 tags = append(tags, t)
1042 }
1043 }
1044 if len(tags) > 0 {
1045 jo["tag"] = tags
1046 }
1047 if t := h.Time; t != nil {
1048 jo["startTime"] = t.StartTime.Format(time.RFC3339)
1049 if t.Duration != 0 {
1050 jo["duration"] = "PT" + strings.ToUpper(t.Duration.String())
1051 }
1052 }
1053 var atts []junk.Junk
1054 for _, d := range h.Donks {
1055 if re_emus.MatchString(d.Name) {
1056 continue
1057 }
1058 jd := junk.New()
1059 jd["mediaType"] = d.Media
1060 jd["name"] = d.Name
1061 jd["summary"] = html.EscapeString(d.Desc)
1062 jd["type"] = "Document"
1063 jd["url"] = d.URL
1064 atts = append(atts, jd)
1065 }
1066 if len(atts) > 0 {
1067 jo["attachment"] = atts
1068 }
1069 j["object"] = jo
1070 case "bonk":
1071 j["type"] = "Announce"
1072 if h.Convoy != "" {
1073 j["context"] = h.Convoy
1074 }
1075 j["object"] = h.XID
1076 case "unbonk":
1077 b := junk.New()
1078 b["id"] = user.URL + "/" + "bonk" + "/" + shortxid(h.XID)
1079 b["type"] = "Announce"
1080 b["actor"] = user.URL
1081 if h.Convoy != "" {
1082 b["context"] = h.Convoy
1083 }
1084 b["object"] = h.XID
1085 j["type"] = "Undo"
1086 j["object"] = b
1087 case "zonk":
1088 j["type"] = "Delete"
1089 j["object"] = h.XID
1090 case "ack":
1091 j["type"] = "Read"
1092 j["object"] = h.XID
1093 case "deack":
1094 b := junk.New()
1095 b["id"] = user.URL + "/" + "ack" + "/" + shortxid(h.XID)
1096 b["type"] = "Read"
1097 b["actor"] = user.URL
1098 b["object"] = h.XID
1099 j["type"] = "Undo"
1100 j["object"] = b
1101 }
1102
1103 return j, jo
1104}
1105
1106var oldjonks = cacheNew(cacheOptions{Filler: func(xid string) ([]byte, bool) {
1107 row := stmtAnyXonk.QueryRow(xid)
1108 honk := scanhonk(row)
1109 if honk == nil || !honk.Public {
1110 return nil, true
1111 }
1112 user, _ := butwhatabout(honk.Username)
1113 rawhonks := gethonksbyconvoy(honk.UserID, honk.Convoy)
1114 reversehonks(rawhonks)
1115 for _, h := range rawhonks {
1116 if h.RID == honk.XID && h.Public && (h.Whofore == 2 || h.IsAcked()) {
1117 honk.Replies = append(honk.Replies, h)
1118 }
1119 }
1120 donksforhonks([]*Honk{honk})
1121 _, j := jonkjonk(user, honk)
1122 j["@context"] = itiswhatitis
1123 var buf bytes.Buffer
1124 j.Write(&buf)
1125 return buf.Bytes(), true
1126}})
1127
1128func gimmejonk(xid string) ([]byte, bool) {
1129 var j []byte
1130 ok := oldjonks.Get(xid, &j)
1131 return j, ok
1132}
1133
1134func honkworldwide(user *WhatAbout, honk *Honk) {
1135 jonk, _ := jonkjonk(user, honk)
1136 jonk["@context"] = itiswhatitis
1137 var buf bytes.Buffer
1138 jonk.Write(&buf)
1139 msg := buf.Bytes()
1140
1141 rcpts := make(map[string]bool)
1142 for _, a := range honk.Audience {
1143 if a == thewholeworld || a == user.URL || strings.HasSuffix(a, "/followers") {
1144 continue
1145 }
1146 var box *Box
1147 ok := boxofboxes.Get(a, &box)
1148 if ok && honk.Public && box.Shared != "" {
1149 rcpts["%"+box.Shared] = true
1150 } else {
1151 rcpts[a] = true
1152 }
1153 }
1154 if honk.Public {
1155 for _, f := range getdubs(user.ID) {
1156 if f.XID == user.URL {
1157 continue
1158 }
1159 var box *Box
1160 ok := boxofboxes.Get(f.XID, &box)
1161 if ok && box.Shared != "" {
1162 rcpts["%"+box.Shared] = true
1163 } else {
1164 rcpts[f.XID] = true
1165 }
1166 }
1167 }
1168 for a := range rcpts {
1169 go deliverate(0, user.Name, a, msg)
1170 }
1171}
1172
1173var oldjonkers = cacheNew(cacheOptions{Filler: func(name string) ([]byte, bool) {
1174 user, err := butwhatabout(name)
1175 if err != nil {
1176 return nil, false
1177 }
1178 about := markitzero(user.About)
1179
1180 j := junk.New()
1181 j["@context"] = itiswhatitis
1182 j["id"] = user.URL
1183 j["type"] = "Person"
1184 j["inbox"] = user.URL + "/inbox"
1185 j["outbox"] = user.URL + "/outbox"
1186 j["followers"] = user.URL + "/followers"
1187 j["following"] = user.URL + "/following"
1188 j["name"] = user.Display
1189 j["preferredUsername"] = user.Name
1190 j["summary"] = about
1191 j["url"] = user.URL
1192 a := junk.New()
1193 a["type"] = "Image"
1194 a["mediaType"] = "image/png"
1195 a["url"] = fmt.Sprintf("https://%s/a?a=%s", serverName, url.QueryEscape(user.URL))
1196 j["icon"] = a
1197 k := junk.New()
1198 k["id"] = user.URL + "#key"
1199 k["owner"] = user.URL
1200 k["publicKeyPem"] = user.Key
1201 j["publicKey"] = k
1202
1203 var buf bytes.Buffer
1204 j.Write(&buf)
1205 return buf.Bytes(), true
1206}, Duration: 1 * time.Minute})
1207
1208func asjonker(name string) ([]byte, bool) {
1209 var j []byte
1210 ok := oldjonkers.Get(name, &j)
1211 return j, ok
1212}
1213
1214var handfull = cacheNew(cacheOptions{Filler: func(name string) (string, bool) {
1215 m := strings.Split(name, "@")
1216 if len(m) != 2 {
1217 log.Printf("bad fish name: %s", name)
1218 return "", true
1219 }
1220 row := stmtGetXonker.QueryRow(name, "fishname")
1221 var href string
1222 err := row.Scan(&href)
1223 if err == nil {
1224 return href, true
1225 }
1226 log.Printf("fishing for %s", name)
1227 j, err := GetJunkFast(fmt.Sprintf("https://%s/.well-known/webfinger?resource=acct:%s", m[1], name))
1228 if err != nil {
1229 log.Printf("failed to go fish %s: %s", name, err)
1230 return "", true
1231 }
1232 links, _ := j.GetArray("links")
1233 for _, li := range links {
1234 l, ok := li.(junk.Junk)
1235 if !ok {
1236 continue
1237 }
1238 href, _ := l.GetString("href")
1239 rel, _ := l.GetString("rel")
1240 t, _ := l.GetString("type")
1241 if rel == "self" && friendorfoe(t) {
1242 _, err := stmtSaveXonker.Exec(name, href, "fishname")
1243 if err != nil {
1244 log.Printf("error saving fishname: %s", err)
1245 }
1246 return href, true
1247 }
1248 }
1249 return href, true
1250}})
1251
1252func gofish(name string) string {
1253 if name[0] == '@' {
1254 name = name[1:]
1255 }
1256 var href string
1257 handfull.Get(name, &href)
1258 return href
1259}
1260
1261func isactor(t string) bool {
1262 switch t {
1263 case "Person":
1264 case "Organization":
1265 case "Application":
1266 case "Service":
1267 default:
1268 return false
1269 }
1270 return true
1271}
1272
1273func investigate(name string) (*Honker, error) {
1274 if name == "" {
1275 return nil, fmt.Errorf("no name")
1276 }
1277 if name[0] == '@' {
1278 name = gofish(name)
1279 }
1280 if name == "" {
1281 return nil, fmt.Errorf("no name")
1282 }
1283 log.Printf("digging up some info on %s", name)
1284 obj, err := GetJunkFast(name)
1285 if err != nil {
1286 log.Printf("error investigating honker: %s", err)
1287 return nil, err
1288 }
1289 t, _ := obj.GetString("type")
1290 if !isactor(t) {
1291 log.Printf("it's not a person! %s", name)
1292 return nil, err
1293 }
1294 xid, _ := obj.GetString("id")
1295 handle, _ := obj.GetString("preferredUsername")
1296 return &Honker{XID: xid, Handle: handle}, nil
1297}