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 items, _ = j.GetArray("items")
300 }
301 if items == nil {
302 obj, ok := j.GetMap("first")
303 if ok {
304 items, _ = obj.GetArray("orderedItems")
305 } else {
306 page1, ok := j.GetString("first")
307 if ok {
308 j, err = GetJunk(page1)
309 if err != nil {
310 log.Printf("error gettings page1: %s", err)
311 return
312 }
313 items, _ = j.GetArray("orderedItems")
314 }
315 }
316 }
317 if len(items) > 20 {
318 items = items[0:20]
319 }
320 for i, j := 0, len(items)-1; i < j; i, j = i+1, j-1 {
321 items[i], items[j] = items[j], items[i]
322 }
323 for _, item := range items {
324 obj, ok := item.(junk.Junk)
325 if !ok {
326 continue
327 }
328 xonksaver(user, obj, origin)
329 }
330 }
331}
332
333func peeppeep() {
334 user, _ := butwhatabout("htest")
335 honkers := gethonkers(user.ID)
336 for _, f := range honkers {
337 if f.Flavor != "peep" {
338 continue
339 }
340 log.Printf("getting updates: %s", f.XID)
341 var box *Box
342 ok := boxofboxes.Get(f.XID, &box)
343 if !ok {
344 log.Printf("error getting outbox")
345 continue
346 }
347 gimmexonks(user, box.Out)
348 }
349}
350func whosthere(xid string) ([]string, string) {
351 obj, err := GetJunk(xid)
352 if err != nil {
353 log.Printf("error getting remote xonk: %s", err)
354 return nil, ""
355 }
356 convoy, _ := obj.GetString("context")
357 if convoy == "" {
358 convoy, _ = obj.GetString("conversation")
359 }
360 return newphone(nil, obj), convoy
361}
362
363func newphone(a []string, obj junk.Junk) []string {
364 for _, addr := range []string{"to", "cc", "attributedTo"} {
365 who, _ := obj.GetString(addr)
366 if who != "" {
367 a = append(a, who)
368 }
369 whos, _ := obj.GetArray(addr)
370 for _, w := range whos {
371 who, _ := w.(string)
372 if who != "" {
373 a = append(a, who)
374 }
375 }
376 }
377 return a
378}
379
380func extractattrto(obj junk.Junk) string {
381 who, _ := obj.GetString("attributedTo")
382 if who != "" {
383 return who
384 }
385 o, ok := obj.GetMap("attributedTo")
386 if ok {
387 id, ok := o.GetString("id")
388 if ok {
389 return id
390 }
391 }
392 arr, _ := obj.GetArray("attributedTo")
393 for _, a := range arr {
394 o, ok := a.(junk.Junk)
395 if ok {
396 t, _ := o.GetString("type")
397 id, _ := o.GetString("id")
398 if t == "Person" || t == "" {
399 return id
400 }
401 }
402 s, ok := a.(string)
403 if ok {
404 return s
405 }
406 }
407 return ""
408}
409
410func xonksaver(user *WhatAbout, item junk.Junk, origin string) *Honk {
411 depth := 0
412 maxdepth := 10
413 currenttid := ""
414 goingup := 0
415 var xonkxonkfn func(item junk.Junk, origin string) *Honk
416
417 saveonemore := func(xid string) {
418 log.Printf("getting onemore: %s", xid)
419 if depth >= maxdepth {
420 log.Printf("in too deep")
421 return
422 }
423 obj, err := GetJunkHardMode(xid)
424 if err != nil {
425 log.Printf("error getting onemore: %s: %s", xid, err)
426 return
427 }
428 depth++
429 xonkxonkfn(obj, originate(xid))
430 depth--
431 }
432
433 xonkxonkfn = func(item junk.Junk, origin string) *Honk {
434 // id, _ := item.GetString( "id")
435 what, _ := item.GetString("type")
436 dt, _ := item.GetString("published")
437
438 var err error
439 var xid, rid, url, content, precis, convoy string
440 var replies []string
441 var obj junk.Junk
442 var ok bool
443 isUpdate := false
444 switch what {
445 case "Delete":
446 obj, ok = item.GetMap("object")
447 if ok {
448 xid, _ = obj.GetString("id")
449 } else {
450 xid, _ = item.GetString("object")
451 }
452 if xid == "" {
453 return nil
454 }
455 if originate(xid) != origin {
456 log.Printf("forged delete: %s", xid)
457 return nil
458 }
459 log.Printf("eradicating %s", xid)
460 eradicatexonk(user.ID, xid)
461 return nil
462 case "Tombstone":
463 xid, _ = item.GetString("id")
464 if xid == "" {
465 return nil
466 }
467 if originate(xid) != origin {
468 log.Printf("forged delete: %s", xid)
469 return nil
470 }
471 log.Printf("eradicating %s", xid)
472 eradicatexonk(user.ID, xid)
473 return nil
474 case "Announce":
475 obj, ok = item.GetMap("object")
476 if ok {
477 xid, _ = obj.GetString("id")
478 } else {
479 xid, _ = item.GetString("object")
480 }
481 if !needxonkid(user, xid) {
482 return nil
483 }
484 log.Printf("getting bonk: %s", xid)
485 obj, err = GetJunkHardMode(xid)
486 if err != nil {
487 log.Printf("error getting bonk: %s: %s", xid, err)
488 }
489 origin = originate(xid)
490 what = "bonk"
491 case "Update":
492 isUpdate = true
493 fallthrough
494 case "Create":
495 obj, ok = item.GetMap("object")
496 if !ok {
497 xid, _ = item.GetString("object")
498 log.Printf("getting created honk: %s", xid)
499 obj, err = GetJunkHardMode(xid)
500 if err != nil {
501 log.Printf("error getting creation: %s", err)
502 }
503 }
504 what = "honk"
505 case "Read":
506 xid, ok = item.GetString("object")
507 if ok {
508 if !needxonkid(user, xid) {
509 log.Printf("don't need read obj: %s", xid)
510 return nil
511 }
512 obj, err = GetJunkHardMode(xid)
513 if err != nil {
514 log.Printf("error getting read: %s", err)
515 return nil
516 }
517 return xonkxonkfn(obj, originate(xid))
518 }
519 return nil
520 case "Audio":
521 fallthrough
522 case "Video":
523 fallthrough
524 case "Question":
525 fallthrough
526 case "Note":
527 fallthrough
528 case "Article":
529 fallthrough
530 case "Page":
531 obj = item
532 what = "honk"
533 case "Event":
534 obj = item
535 what = "event"
536 default:
537 log.Printf("unknown activity: %s", what)
538 fd, _ := os.OpenFile("savedinbox.json", os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
539 item.Write(fd)
540 io.WriteString(fd, "\n")
541 fd.Close()
542 return nil
543 }
544
545 if obj != nil {
546 _, ok := obj.GetString("diaspora:guid")
547 if ok {
548 log.Printf("looks like friendica")
549 // friendica does the silliest bonks
550 c, ok := obj.FindString([]string{"source", "content"})
551 if ok {
552 log.Printf("got content")
553 re_link := regexp.MustCompile(`link='([^']*)'`)
554 m := re_link.FindStringSubmatch(c)
555 if len(m) > 1 {
556 xid := m[1]
557 log.Printf("getting friendica flavored bonk: %s", xid)
558 if !needxonkid(user, xid) {
559 return nil
560 }
561 newobj, err := GetJunkHardMode(xid)
562 if err != nil {
563 log.Printf("error getting bonk: %s: %s", xid, err)
564 } else {
565 obj = newobj
566 origin = originate(xid)
567 what = "bonk"
568 }
569 } else {
570 log.Printf("can't find link")
571 }
572 } else {
573 log.Printf("no source content")
574 }
575 }
576 }
577
578 var xonk Honk
579 // early init
580 xonk.UserID = user.ID
581 xonk.Honker, _ = item.GetString("actor")
582 if xonk.Honker == "" {
583 xonk.Honker, _ = item.GetString("attributedTo")
584 }
585 if obj != nil {
586 if xonk.Honker == "" {
587 xonk.Honker = extractattrto(obj)
588 }
589 xonk.Oonker = extractattrto(obj)
590 if xonk.Oonker == xonk.Honker {
591 xonk.Oonker = ""
592 }
593 xonk.Audience = newphone(nil, obj)
594 }
595 xonk.Audience = append(xonk.Audience, xonk.Honker)
596 xonk.Audience = oneofakind(xonk.Audience)
597 for _, a := range xonk.Audience {
598 if a == user.URL {
599 xonk.Whofore = 1
600 }
601 }
602
603 if obj != nil {
604 ot, _ := obj.GetString("type")
605 url, _ = obj.GetString("url")
606 dt2, ok := obj.GetString("published")
607 if ok {
608 dt = dt2
609 }
610 xid, _ = obj.GetString("id")
611 precis, _ = obj.GetString("summary")
612 if precis == "" {
613 precis, _ = obj.GetString("name")
614 }
615 content, _ = obj.GetString("content")
616 if !strings.HasPrefix(content, "<p>") {
617 content = "<p>" + content
618 }
619 sens, _ := obj["sensitive"].(bool)
620 if sens && precis == "" {
621 precis = "unspecified horror"
622 }
623 rid, ok = obj.GetString("inReplyTo")
624 if !ok {
625 robj, ok := obj.GetMap("inReplyTo")
626 if ok {
627 rid, _ = robj.GetString("id")
628 }
629 }
630 convoy, _ = obj.GetString("context")
631 if strings.HasSuffix(convoy, "#context") &&
632 originate(convoy) != originate(xid) {
633 // friendica...
634 convoy = ""
635 }
636 if convoy == "" {
637 convoy, _ = obj.GetString("conversation")
638 }
639 if ot == "Question" {
640 if what == "honk" {
641 what = "qonk"
642 }
643 content += "<ul>"
644 ans, _ := obj.GetArray("oneOf")
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 ans, _ = obj.GetArray("anyOf")
654 for _, ai := range ans {
655 a, ok := ai.(junk.Junk)
656 if !ok {
657 continue
658 }
659 as, _ := a.GetString("name")
660 content += "<li>" + as
661 }
662 content += "</ul>"
663 }
664 if what == "honk" && rid != "" {
665 what = "tonk"
666 }
667 atts, _ := obj.GetArray("attachment")
668 for i, atti := range atts {
669 att, ok := atti.(junk.Junk)
670 if !ok {
671 continue
672 }
673 at, _ := att.GetString("type")
674 mt, _ := att.GetString("mediaType")
675 u, _ := att.GetString("url")
676 name, _ := att.GetString("name")
677 desc, _ := att.GetString("summary")
678 if desc == "" {
679 desc = name
680 }
681 localize := false
682 if i > 4 {
683 log.Printf("excessive attachment: %s", at)
684 } else if at == "Document" || at == "Image" {
685 mt = strings.ToLower(mt)
686 log.Printf("attachment: %s %s", mt, u)
687 if mt == "text/plain" || strings.HasPrefix(mt, "image") {
688 localize = true
689 }
690 } else {
691 log.Printf("unknown attachment: %s", at)
692 }
693 if skipMedia(&xonk) {
694 localize = false
695 }
696 donk := savedonk(u, name, desc, mt, localize)
697 if donk != nil {
698 xonk.Donks = append(xonk.Donks, donk)
699 }
700 }
701 tags, _ := obj.GetArray("tag")
702 for _, tagi := range tags {
703 tag, ok := tagi.(junk.Junk)
704 if !ok {
705 continue
706 }
707 tt, _ := tag.GetString("type")
708 name, _ := tag.GetString("name")
709 desc, _ := tag.GetString("summary")
710 if desc == "" {
711 desc = name
712 }
713 if tt == "Emoji" {
714 icon, _ := tag.GetMap("icon")
715 mt, _ := icon.GetString("mediaType")
716 if mt == "" {
717 mt = "image/png"
718 }
719 u, _ := icon.GetString("url")
720 donk := savedonk(u, name, desc, mt, true)
721 if donk != nil {
722 xonk.Donks = append(xonk.Donks, donk)
723 }
724 }
725 if tt == "Hashtag" {
726 if name == "" || name == "#" {
727 // skip it
728 } else {
729 if name[0] != '#' {
730 name = "#" + name
731 }
732 xonk.Onts = append(xonk.Onts, name)
733 }
734 }
735 if tt == "Place" {
736 p := new(Place)
737 p.Name = name
738 p.Latitude, _ = tag["latitude"].(float64)
739 p.Longitude, _ = tag["longitude"].(float64)
740 p.Url, _ = tag.GetString("url")
741 xonk.Place = p
742 }
743 }
744 starttime, ok := obj.GetString("startTime")
745 if ok {
746 start, err := time.Parse(time.RFC3339, starttime)
747 if err == nil {
748 t := new(Time)
749 t.StartTime = start
750 endtime, _ := obj.GetString("endTime")
751 t.EndTime, _ = time.Parse(time.RFC3339, endtime)
752 dura, _ := obj.GetString("duration")
753 if strings.HasPrefix(dura, "PT") {
754 dura = strings.ToLower(dura[2:])
755 d, _ := time.ParseDuration(dura)
756 t.Duration = Duration(d)
757 }
758 xonk.Time = t
759 }
760 }
761 loca, ok := obj.GetMap("location")
762 if ok {
763 tt, _ := loca.GetString("type")
764 name, _ := loca.GetString("name")
765 if tt == "Place" {
766 p := new(Place)
767 p.Name = name
768 p.Latitude, _ = loca["latitude"].(float64)
769 p.Longitude, _ = loca["longitude"].(float64)
770 p.Url, _ = loca.GetString("url")
771 xonk.Place = p
772 }
773 }
774
775 xonk.Onts = oneofakind(xonk.Onts)
776 replyobj, ok := obj.GetMap("replies")
777 if ok {
778 items, ok := replyobj.GetArray("items")
779 if !ok {
780 first, ok := replyobj.GetMap("first")
781 if ok {
782 items, _ = first.GetArray("items")
783 }
784 }
785 for _, repl := range items {
786 s, ok := repl.(string)
787 if ok {
788 replies = append(replies, s)
789 }
790 }
791 }
792
793 }
794 if originate(xid) != origin {
795 log.Printf("original sin: %s <> %s", xid, origin)
796 item.Write(os.Stdout)
797 return nil
798 }
799
800 if currenttid == "" {
801 currenttid = convoy
802 }
803
804 if len(content) > 90001 {
805 log.Printf("content too long. truncating")
806 content = content[:90001]
807 }
808
809 // grab any inline imgs
810 imgfilt := htfilter.New()
811 imgfilt.Imager = inlineimgs
812 imgfilt.String(content)
813
814 // init xonk
815 xonk.What = what
816 xonk.XID = xid
817 xonk.RID = rid
818 xonk.Date, _ = time.Parse(time.RFC3339, dt)
819 xonk.URL = url
820 xonk.Noise = content
821 xonk.Precis = precis
822 xonk.Format = "html"
823 xonk.Convoy = convoy
824
825 if isUpdate {
826 log.Printf("something has changed! %s", xonk.XID)
827 prev := getxonk(user.ID, xonk.XID)
828 if prev == nil {
829 log.Printf("didn't find old version for update: %s", xonk.XID)
830 return nil
831 }
832 prev.Noise = xonk.Noise
833 prev.Precis = xonk.Precis
834 prev.Date = xonk.Date
835 prev.Donks = xonk.Donks
836 prev.Onts = xonk.Onts
837 prev.Place = xonk.Place
838 updatehonk(prev)
839 } else if needxonk(user, &xonk) {
840 if rid != "" {
841 if needxonkid(user, rid) {
842 goingup++
843 saveonemore(rid)
844 goingup--
845 }
846 if convoy == "" {
847 xx := getxonk(user.ID, rid)
848 if xx != nil {
849 convoy = xx.Convoy
850 }
851 }
852 }
853 if convoy == "" {
854 convoy = currenttid
855 }
856 if convoy == "" {
857 convoy = "missing-" + xfiltrate()
858 currenttid = convoy
859 }
860 xonk.Convoy = convoy
861 savexonk(&xonk)
862 }
863 if goingup == 0 {
864 for _, replid := range replies {
865 if needxonkid(user, replid) {
866 log.Printf("missing a reply: %s", replid)
867 saveonemore(replid)
868 }
869 }
870 }
871 return &xonk
872 }
873
874 return xonkxonkfn(item, origin)
875}
876
877func rubadubdub(user *WhatAbout, req junk.Junk) {
878 xid, _ := req.GetString("id")
879 actor, _ := req.GetString("actor")
880 j := junk.New()
881 j["@context"] = itiswhatitis
882 j["id"] = user.URL + "/dub/" + url.QueryEscape(xid)
883 j["type"] = "Accept"
884 j["actor"] = user.URL
885 j["to"] = actor
886 j["published"] = time.Now().UTC().Format(time.RFC3339)
887 j["object"] = req
888
889 var buf bytes.Buffer
890 j.Write(&buf)
891 msg := buf.Bytes()
892
893 deliverate(0, user.Name, actor, msg)
894}
895
896func itakeitallback(user *WhatAbout, xid string) {
897 j := junk.New()
898 j["@context"] = itiswhatitis
899 j["id"] = user.URL + "/unsub/" + url.QueryEscape(xid)
900 j["type"] = "Undo"
901 j["actor"] = user.URL
902 j["to"] = xid
903 f := junk.New()
904 f["id"] = user.URL + "/sub/" + url.QueryEscape(xid)
905 f["type"] = "Follow"
906 f["actor"] = user.URL
907 f["to"] = xid
908 f["object"] = xid
909 j["object"] = f
910 j["published"] = time.Now().UTC().Format(time.RFC3339)
911
912 var buf bytes.Buffer
913 j.Write(&buf)
914 msg := buf.Bytes()
915
916 deliverate(0, user.Name, xid, msg)
917}
918
919func subsub(user *WhatAbout, xid string) {
920 if xid == "" {
921 log.Printf("can't subscribe to empty")
922 return
923 }
924 j := junk.New()
925 j["@context"] = itiswhatitis
926 j["id"] = user.URL + "/sub/" + url.QueryEscape(xid)
927 j["type"] = "Follow"
928 j["actor"] = user.URL
929 j["to"] = xid
930 j["object"] = xid
931 j["published"] = time.Now().UTC().Format(time.RFC3339)
932
933 var buf bytes.Buffer
934 j.Write(&buf)
935 msg := buf.Bytes()
936
937 deliverate(0, user.Name, xid, msg)
938}
939
940// returns activity, object
941func jonkjonk(user *WhatAbout, h *Honk) (junk.Junk, junk.Junk) {
942 dt := h.Date.Format(time.RFC3339)
943 var jo junk.Junk
944 j := junk.New()
945 j["id"] = user.URL + "/" + h.What + "/" + shortxid(h.XID)
946 j["actor"] = user.URL
947 j["published"] = dt
948 if h.Public {
949 j["to"] = []string{h.Audience[0], user.URL + "/followers"}
950 } else {
951 j["to"] = h.Audience[0]
952 }
953 if len(h.Audience) > 1 {
954 j["cc"] = h.Audience[1:]
955 }
956
957 switch h.What {
958 case "update":
959 fallthrough
960 case "tonk":
961 fallthrough
962 case "event":
963 fallthrough
964 case "honk":
965 j["type"] = "Create"
966 if h.What == "update" {
967 j["type"] = "Update"
968 }
969
970 jo = junk.New()
971 jo["id"] = h.XID
972 jo["type"] = "Note"
973 if h.What == "event" {
974 jo["type"] = "Event"
975 }
976 jo["published"] = dt
977 jo["url"] = h.XID
978 jo["attributedTo"] = user.URL
979 if h.RID != "" {
980 jo["inReplyTo"] = h.RID
981 }
982 if h.Convoy != "" {
983 jo["context"] = h.Convoy
984 jo["conversation"] = h.Convoy
985 }
986 jo["to"] = h.Audience[0]
987 if len(h.Audience) > 1 {
988 jo["cc"] = h.Audience[1:]
989 }
990 if !h.Public {
991 jo["directMessage"] = true
992 }
993 translate(h)
994 h.Noise = re_memes.ReplaceAllString(h.Noise, "")
995 jo["summary"] = html.EscapeString(h.Precis)
996 jo["content"] = ontologize(mentionize(h.Noise))
997 if strings.HasPrefix(h.Precis, "DZ:") {
998 jo["sensitive"] = true
999 }
1000
1001 var replies []string
1002 for _, reply := range h.Replies {
1003 replies = append(replies, reply.XID)
1004 }
1005 if len(replies) > 0 {
1006 jr := junk.New()
1007 jr["type"] = "Collection"
1008 jr["totalItems"] = len(replies)
1009 jr["items"] = replies
1010 jo["replies"] = jr
1011 }
1012
1013 var tags []junk.Junk
1014 g := bunchofgrapes(h.Noise)
1015 for _, m := range g {
1016 t := junk.New()
1017 t["type"] = "Mention"
1018 t["name"] = m.who
1019 t["href"] = m.where
1020 tags = append(tags, t)
1021 }
1022 for _, o := range h.Onts {
1023 t := junk.New()
1024 t["type"] = "Hashtag"
1025 o = strings.ToLower(o)
1026 t["href"] = fmt.Sprintf("https://%s/o/%s", serverName, o[1:])
1027 t["name"] = o
1028 tags = append(tags, t)
1029 }
1030 herd := herdofemus(h.Noise)
1031 for _, e := range herd {
1032 t := junk.New()
1033 t["id"] = e.ID
1034 t["type"] = "Emoji"
1035 t["name"] = e.Name
1036 i := junk.New()
1037 i["type"] = "Image"
1038 i["mediaType"] = "image/png"
1039 i["url"] = e.ID
1040 t["icon"] = i
1041 tags = append(tags, t)
1042 }
1043 if p := h.Place; p != nil {
1044 t := junk.New()
1045 t["type"] = "Place"
1046 t["name"] = p.Name
1047 t["latitude"] = p.Latitude
1048 t["longitude"] = p.Longitude
1049 t["url"] = p.Url
1050 if h.What == "event" {
1051 jo["location"] = t
1052 } else {
1053 tags = append(tags, t)
1054 }
1055 }
1056 if len(tags) > 0 {
1057 jo["tag"] = tags
1058 }
1059 if t := h.Time; t != nil {
1060 jo["startTime"] = t.StartTime.Format(time.RFC3339)
1061 if t.Duration != 0 {
1062 jo["duration"] = "PT" + strings.ToUpper(t.Duration.String())
1063 }
1064 }
1065 var atts []junk.Junk
1066 for _, d := range h.Donks {
1067 if re_emus.MatchString(d.Name) {
1068 continue
1069 }
1070 jd := junk.New()
1071 jd["mediaType"] = d.Media
1072 jd["name"] = d.Name
1073 jd["summary"] = html.EscapeString(d.Desc)
1074 jd["type"] = "Document"
1075 jd["url"] = d.URL
1076 atts = append(atts, jd)
1077 }
1078 if len(atts) > 0 {
1079 jo["attachment"] = atts
1080 }
1081 j["object"] = jo
1082 case "bonk":
1083 j["type"] = "Announce"
1084 if h.Convoy != "" {
1085 j["context"] = h.Convoy
1086 }
1087 j["object"] = h.XID
1088 case "unbonk":
1089 b := junk.New()
1090 b["id"] = user.URL + "/" + "bonk" + "/" + shortxid(h.XID)
1091 b["type"] = "Announce"
1092 b["actor"] = user.URL
1093 if h.Convoy != "" {
1094 b["context"] = h.Convoy
1095 }
1096 b["object"] = h.XID
1097 j["type"] = "Undo"
1098 j["object"] = b
1099 case "zonk":
1100 j["type"] = "Delete"
1101 j["object"] = h.XID
1102 case "ack":
1103 j["type"] = "Read"
1104 j["object"] = h.XID
1105 case "deack":
1106 b := junk.New()
1107 b["id"] = user.URL + "/" + "ack" + "/" + shortxid(h.XID)
1108 b["type"] = "Read"
1109 b["actor"] = user.URL
1110 b["object"] = h.XID
1111 j["type"] = "Undo"
1112 j["object"] = b
1113 }
1114
1115 return j, jo
1116}
1117
1118var oldjonks = cacheNew(cacheOptions{Filler: func(xid string) ([]byte, bool) {
1119 row := stmtAnyXonk.QueryRow(xid)
1120 honk := scanhonk(row)
1121 if honk == nil || !honk.Public {
1122 return nil, true
1123 }
1124 user, _ := butwhatabout(honk.Username)
1125 rawhonks := gethonksbyconvoy(honk.UserID, honk.Convoy)
1126 reversehonks(rawhonks)
1127 for _, h := range rawhonks {
1128 if h.RID == honk.XID && h.Public && (h.Whofore == 2 || h.IsAcked()) {
1129 honk.Replies = append(honk.Replies, h)
1130 }
1131 }
1132 donksforhonks([]*Honk{honk})
1133 _, j := jonkjonk(user, honk)
1134 j["@context"] = itiswhatitis
1135 var buf bytes.Buffer
1136 j.Write(&buf)
1137 return buf.Bytes(), true
1138}})
1139
1140func gimmejonk(xid string) ([]byte, bool) {
1141 var j []byte
1142 ok := oldjonks.Get(xid, &j)
1143 return j, ok
1144}
1145
1146func honkworldwide(user *WhatAbout, honk *Honk) {
1147 jonk, _ := jonkjonk(user, honk)
1148 jonk["@context"] = itiswhatitis
1149 var buf bytes.Buffer
1150 jonk.Write(&buf)
1151 msg := buf.Bytes()
1152
1153 rcpts := make(map[string]bool)
1154 for _, a := range honk.Audience {
1155 if a == thewholeworld || a == user.URL || strings.HasSuffix(a, "/followers") {
1156 continue
1157 }
1158 var box *Box
1159 ok := boxofboxes.Get(a, &box)
1160 if ok && honk.Public && box.Shared != "" {
1161 rcpts["%"+box.Shared] = true
1162 } else {
1163 rcpts[a] = true
1164 }
1165 }
1166 if honk.Public {
1167 for _, f := range getdubs(user.ID) {
1168 if f.XID == user.URL {
1169 continue
1170 }
1171 var box *Box
1172 ok := boxofboxes.Get(f.XID, &box)
1173 if ok && box.Shared != "" {
1174 rcpts["%"+box.Shared] = true
1175 } else {
1176 rcpts[f.XID] = true
1177 }
1178 }
1179 }
1180 for a := range rcpts {
1181 go deliverate(0, user.Name, a, msg)
1182 }
1183}
1184
1185var oldjonkers = cacheNew(cacheOptions{Filler: func(name string) ([]byte, bool) {
1186 user, err := butwhatabout(name)
1187 if err != nil {
1188 return nil, false
1189 }
1190 about := markitzero(user.About)
1191
1192 j := junk.New()
1193 j["@context"] = itiswhatitis
1194 j["id"] = user.URL
1195 j["type"] = "Person"
1196 j["inbox"] = user.URL + "/inbox"
1197 j["outbox"] = user.URL + "/outbox"
1198 j["followers"] = user.URL + "/followers"
1199 j["following"] = user.URL + "/following"
1200 j["name"] = user.Display
1201 j["preferredUsername"] = user.Name
1202 j["summary"] = about
1203 j["url"] = user.URL
1204 a := junk.New()
1205 a["type"] = "Image"
1206 a["mediaType"] = "image/png"
1207 a["url"] = fmt.Sprintf("https://%s/a?a=%s", serverName, url.QueryEscape(user.URL))
1208 j["icon"] = a
1209 k := junk.New()
1210 k["id"] = user.URL + "#key"
1211 k["owner"] = user.URL
1212 k["publicKeyPem"] = user.Key
1213 j["publicKey"] = k
1214
1215 var buf bytes.Buffer
1216 j.Write(&buf)
1217 return buf.Bytes(), true
1218}, Duration: 1 * time.Minute})
1219
1220func asjonker(name string) ([]byte, bool) {
1221 var j []byte
1222 ok := oldjonkers.Get(name, &j)
1223 return j, ok
1224}
1225
1226var handfull = cacheNew(cacheOptions{Filler: func(name string) (string, bool) {
1227 m := strings.Split(name, "@")
1228 if len(m) != 2 {
1229 log.Printf("bad fish name: %s", name)
1230 return "", true
1231 }
1232 row := stmtGetXonker.QueryRow(name, "fishname")
1233 var href string
1234 err := row.Scan(&href)
1235 if err == nil {
1236 return href, true
1237 }
1238 log.Printf("fishing for %s", name)
1239 j, err := GetJunkFast(fmt.Sprintf("https://%s/.well-known/webfinger?resource=acct:%s", m[1], name))
1240 if err != nil {
1241 log.Printf("failed to go fish %s: %s", name, err)
1242 return "", true
1243 }
1244 links, _ := j.GetArray("links")
1245 for _, li := range links {
1246 l, ok := li.(junk.Junk)
1247 if !ok {
1248 continue
1249 }
1250 href, _ := l.GetString("href")
1251 rel, _ := l.GetString("rel")
1252 t, _ := l.GetString("type")
1253 if rel == "self" && friendorfoe(t) {
1254 _, err := stmtSaveXonker.Exec(name, href, "fishname")
1255 if err != nil {
1256 log.Printf("error saving fishname: %s", err)
1257 }
1258 return href, true
1259 }
1260 }
1261 return href, true
1262}})
1263
1264func gofish(name string) string {
1265 if name[0] == '@' {
1266 name = name[1:]
1267 }
1268 var href string
1269 handfull.Get(name, &href)
1270 return href
1271}
1272
1273func isactor(t string) bool {
1274 switch t {
1275 case "Person":
1276 case "Organization":
1277 case "Application":
1278 case "Service":
1279 default:
1280 return false
1281 }
1282 return true
1283}
1284
1285func investigate(name string) (*Honker, error) {
1286 if name == "" {
1287 return nil, fmt.Errorf("no name")
1288 }
1289 if name[0] == '@' {
1290 name = gofish(name)
1291 }
1292 if name == "" {
1293 return nil, fmt.Errorf("no name")
1294 }
1295 log.Printf("digging up some info on %s", name)
1296 obj, err := GetJunkFast(name)
1297 if err != nil {
1298 log.Printf("error investigating honker: %s", err)
1299 return nil, err
1300 }
1301 t, _ := obj.GetString("type")
1302 if !isactor(t) {
1303 log.Printf("it's not a person! %s", name)
1304 return nil, err
1305 }
1306 xid, _ := obj.GetString("id")
1307 handle, _ := obj.GetString("preferredUsername")
1308 return &Honker{XID: xid, Handle: handle}, nil
1309}