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 name == "" || name == "#" {
722 // skip it
723 } else {
724 if name[0] != '#' {
725 name = "#" + name
726 }
727 xonk.Onts = append(xonk.Onts, name)
728 }
729 }
730 if tt == "Place" {
731 p := new(Place)
732 p.Name = name
733 p.Latitude, _ = tag["latitude"].(float64)
734 p.Longitude, _ = tag["longitude"].(float64)
735 p.Url, _ = tag.GetString("url")
736 xonk.Place = p
737 }
738 }
739 starttime, ok := obj.GetString("startTime")
740 if ok {
741 start, err := time.Parse(time.RFC3339, starttime)
742 if err == nil {
743 t := new(Time)
744 t.StartTime = start
745 endtime, _ := obj.GetString("endTime")
746 t.EndTime, _ = time.Parse(time.RFC3339, endtime)
747 dura, _ := obj.GetString("duration")
748 if strings.HasPrefix(dura, "PT") {
749 dura = strings.ToLower(dura[2:])
750 d, _ := time.ParseDuration(dura)
751 t.Duration = Duration(d)
752 }
753 xonk.Time = t
754 }
755 }
756 loca, ok := obj.GetMap("location")
757 if ok {
758 tt, _ := loca.GetString("type")
759 name, _ := loca.GetString("name")
760 if tt == "Place" {
761 p := new(Place)
762 p.Name = name
763 p.Latitude, _ = loca["latitude"].(float64)
764 p.Longitude, _ = loca["longitude"].(float64)
765 p.Url, _ = loca.GetString("url")
766 xonk.Place = p
767 }
768 }
769
770 xonk.Onts = oneofakind(xonk.Onts)
771 replyobj, ok := obj.GetMap("replies")
772 if ok {
773 items, ok := replyobj.GetArray("items")
774 if !ok {
775 first, ok := replyobj.GetMap("first")
776 if ok {
777 items, _ = first.GetArray("items")
778 }
779 }
780 for _, repl := range items {
781 s, ok := repl.(string)
782 if ok {
783 replies = append(replies, s)
784 }
785 }
786 }
787
788 }
789 if originate(xid) != origin {
790 log.Printf("original sin: %s <> %s", xid, origin)
791 item.Write(os.Stdout)
792 return nil
793 }
794
795 if currenttid == "" {
796 currenttid = convoy
797 }
798
799 if len(content) > 90001 {
800 log.Printf("content too long. truncating")
801 content = content[:90001]
802 }
803
804 // grab any inline imgs
805 imgfilt := htfilter.New()
806 imgfilt.Imager = inlineimgs
807 imgfilt.String(content)
808
809 // init xonk
810 xonk.What = what
811 xonk.XID = xid
812 xonk.RID = rid
813 xonk.Date, _ = time.Parse(time.RFC3339, dt)
814 xonk.URL = url
815 xonk.Noise = content
816 xonk.Precis = precis
817 xonk.Format = "html"
818 xonk.Convoy = convoy
819
820 if isUpdate {
821 log.Printf("something has changed! %s", xonk.XID)
822 prev := getxonk(user.ID, xonk.XID)
823 if prev == nil {
824 log.Printf("didn't find old version for update: %s", xonk.XID)
825 return nil
826 }
827 prev.Noise = xonk.Noise
828 prev.Precis = xonk.Precis
829 prev.Date = xonk.Date
830 prev.Donks = xonk.Donks
831 prev.Onts = xonk.Onts
832 prev.Place = xonk.Place
833 updatehonk(prev)
834 } else if needxonk(user, &xonk) {
835 if rid != "" {
836 if needxonkid(user, rid) {
837 goingup++
838 saveonemore(rid)
839 goingup--
840 }
841 if convoy == "" {
842 xx := getxonk(user.ID, rid)
843 if xx != nil {
844 convoy = xx.Convoy
845 }
846 }
847 }
848 if convoy == "" {
849 convoy = currenttid
850 }
851 if convoy == "" {
852 convoy = "missing-" + xfiltrate()
853 currenttid = convoy
854 }
855 xonk.Convoy = convoy
856 savexonk(&xonk)
857 }
858 if goingup == 0 {
859 for _, replid := range replies {
860 if needxonkid(user, replid) {
861 log.Printf("missing a reply: %s", replid)
862 saveonemore(replid)
863 }
864 }
865 }
866 return &xonk
867 }
868
869 return xonkxonkfn(item, origin)
870}
871
872func rubadubdub(user *WhatAbout, req junk.Junk) {
873 xid, _ := req.GetString("id")
874 actor, _ := req.GetString("actor")
875 j := junk.New()
876 j["@context"] = itiswhatitis
877 j["id"] = user.URL + "/dub/" + url.QueryEscape(xid)
878 j["type"] = "Accept"
879 j["actor"] = user.URL
880 j["to"] = actor
881 j["published"] = time.Now().UTC().Format(time.RFC3339)
882 j["object"] = req
883
884 var buf bytes.Buffer
885 j.Write(&buf)
886 msg := buf.Bytes()
887
888 deliverate(0, user.Name, actor, msg)
889}
890
891func itakeitallback(user *WhatAbout, xid string) {
892 j := junk.New()
893 j["@context"] = itiswhatitis
894 j["id"] = user.URL + "/unsub/" + url.QueryEscape(xid)
895 j["type"] = "Undo"
896 j["actor"] = user.URL
897 j["to"] = xid
898 f := junk.New()
899 f["id"] = user.URL + "/sub/" + url.QueryEscape(xid)
900 f["type"] = "Follow"
901 f["actor"] = user.URL
902 f["to"] = xid
903 f["object"] = xid
904 j["object"] = f
905 j["published"] = time.Now().UTC().Format(time.RFC3339)
906
907 var buf bytes.Buffer
908 j.Write(&buf)
909 msg := buf.Bytes()
910
911 deliverate(0, user.Name, xid, msg)
912}
913
914func subsub(user *WhatAbout, xid string) {
915 if xid == "" {
916 log.Printf("can't subscribe to empty")
917 return
918 }
919 j := junk.New()
920 j["@context"] = itiswhatitis
921 j["id"] = user.URL + "/sub/" + url.QueryEscape(xid)
922 j["type"] = "Follow"
923 j["actor"] = user.URL
924 j["to"] = xid
925 j["object"] = xid
926 j["published"] = time.Now().UTC().Format(time.RFC3339)
927
928 var buf bytes.Buffer
929 j.Write(&buf)
930 msg := buf.Bytes()
931
932 deliverate(0, user.Name, xid, msg)
933}
934
935// returns activity, object
936func jonkjonk(user *WhatAbout, h *Honk) (junk.Junk, junk.Junk) {
937 dt := h.Date.Format(time.RFC3339)
938 var jo junk.Junk
939 j := junk.New()
940 j["id"] = user.URL + "/" + h.What + "/" + shortxid(h.XID)
941 j["actor"] = user.URL
942 j["published"] = dt
943 if h.Public {
944 j["to"] = []string{h.Audience[0], user.URL + "/followers"}
945 } else {
946 j["to"] = h.Audience[0]
947 }
948 if len(h.Audience) > 1 {
949 j["cc"] = h.Audience[1:]
950 }
951
952 switch h.What {
953 case "update":
954 fallthrough
955 case "tonk":
956 fallthrough
957 case "event":
958 fallthrough
959 case "honk":
960 j["type"] = "Create"
961 if h.What == "update" {
962 j["type"] = "Update"
963 }
964
965 jo = junk.New()
966 jo["id"] = h.XID
967 jo["type"] = "Note"
968 if h.What == "event" {
969 jo["type"] = "Event"
970 }
971 jo["published"] = dt
972 jo["url"] = h.XID
973 jo["attributedTo"] = user.URL
974 if h.RID != "" {
975 jo["inReplyTo"] = h.RID
976 }
977 if h.Convoy != "" {
978 jo["context"] = h.Convoy
979 jo["conversation"] = h.Convoy
980 }
981 jo["to"] = h.Audience[0]
982 if len(h.Audience) > 1 {
983 jo["cc"] = h.Audience[1:]
984 }
985 if !h.Public {
986 jo["directMessage"] = true
987 }
988 translate(h)
989 h.Noise = re_memes.ReplaceAllString(h.Noise, "")
990 jo["summary"] = html.EscapeString(h.Precis)
991 jo["content"] = ontologize(mentionize(h.Noise))
992 if strings.HasPrefix(h.Precis, "DZ:") {
993 jo["sensitive"] = true
994 }
995
996 var replies []string
997 for _, reply := range h.Replies {
998 replies = append(replies, reply.XID)
999 }
1000 if len(replies) > 0 {
1001 jr := junk.New()
1002 jr["type"] = "Collection"
1003 jr["totalItems"] = len(replies)
1004 jr["items"] = replies
1005 jo["replies"] = jr
1006 }
1007
1008 var tags []junk.Junk
1009 g := bunchofgrapes(h.Noise)
1010 for _, m := range g {
1011 t := junk.New()
1012 t["type"] = "Mention"
1013 t["name"] = m.who
1014 t["href"] = m.where
1015 tags = append(tags, t)
1016 }
1017 for _, o := range h.Onts {
1018 t := junk.New()
1019 t["type"] = "Hashtag"
1020 o = strings.ToLower(o)
1021 t["href"] = fmt.Sprintf("https://%s/o/%s", serverName, o[1:])
1022 t["name"] = o
1023 tags = append(tags, t)
1024 }
1025 herd := herdofemus(h.Noise)
1026 for _, e := range herd {
1027 t := junk.New()
1028 t["id"] = e.ID
1029 t["type"] = "Emoji"
1030 t["name"] = e.Name
1031 i := junk.New()
1032 i["type"] = "Image"
1033 i["mediaType"] = "image/png"
1034 i["url"] = e.ID
1035 t["icon"] = i
1036 tags = append(tags, t)
1037 }
1038 if p := h.Place; p != nil {
1039 t := junk.New()
1040 t["type"] = "Place"
1041 t["name"] = p.Name
1042 t["latitude"] = p.Latitude
1043 t["longitude"] = p.Longitude
1044 t["url"] = p.Url
1045 if h.What == "event" {
1046 jo["location"] = t
1047 } else {
1048 tags = append(tags, t)
1049 }
1050 }
1051 if len(tags) > 0 {
1052 jo["tag"] = tags
1053 }
1054 if t := h.Time; t != nil {
1055 jo["startTime"] = t.StartTime.Format(time.RFC3339)
1056 if t.Duration != 0 {
1057 jo["duration"] = "PT" + strings.ToUpper(t.Duration.String())
1058 }
1059 }
1060 var atts []junk.Junk
1061 for _, d := range h.Donks {
1062 if re_emus.MatchString(d.Name) {
1063 continue
1064 }
1065 jd := junk.New()
1066 jd["mediaType"] = d.Media
1067 jd["name"] = d.Name
1068 jd["summary"] = html.EscapeString(d.Desc)
1069 jd["type"] = "Document"
1070 jd["url"] = d.URL
1071 atts = append(atts, jd)
1072 }
1073 if len(atts) > 0 {
1074 jo["attachment"] = atts
1075 }
1076 j["object"] = jo
1077 case "bonk":
1078 j["type"] = "Announce"
1079 if h.Convoy != "" {
1080 j["context"] = h.Convoy
1081 }
1082 j["object"] = h.XID
1083 case "unbonk":
1084 b := junk.New()
1085 b["id"] = user.URL + "/" + "bonk" + "/" + shortxid(h.XID)
1086 b["type"] = "Announce"
1087 b["actor"] = user.URL
1088 if h.Convoy != "" {
1089 b["context"] = h.Convoy
1090 }
1091 b["object"] = h.XID
1092 j["type"] = "Undo"
1093 j["object"] = b
1094 case "zonk":
1095 j["type"] = "Delete"
1096 j["object"] = h.XID
1097 case "ack":
1098 j["type"] = "Read"
1099 j["object"] = h.XID
1100 case "deack":
1101 b := junk.New()
1102 b["id"] = user.URL + "/" + "ack" + "/" + shortxid(h.XID)
1103 b["type"] = "Read"
1104 b["actor"] = user.URL
1105 b["object"] = h.XID
1106 j["type"] = "Undo"
1107 j["object"] = b
1108 }
1109
1110 return j, jo
1111}
1112
1113var oldjonks = cacheNew(cacheOptions{Filler: func(xid string) ([]byte, bool) {
1114 row := stmtAnyXonk.QueryRow(xid)
1115 honk := scanhonk(row)
1116 if honk == nil || !honk.Public {
1117 return nil, true
1118 }
1119 user, _ := butwhatabout(honk.Username)
1120 rawhonks := gethonksbyconvoy(honk.UserID, honk.Convoy)
1121 reversehonks(rawhonks)
1122 for _, h := range rawhonks {
1123 if h.RID == honk.XID && h.Public && (h.Whofore == 2 || h.IsAcked()) {
1124 honk.Replies = append(honk.Replies, h)
1125 }
1126 }
1127 donksforhonks([]*Honk{honk})
1128 _, j := jonkjonk(user, honk)
1129 j["@context"] = itiswhatitis
1130 var buf bytes.Buffer
1131 j.Write(&buf)
1132 return buf.Bytes(), true
1133}})
1134
1135func gimmejonk(xid string) ([]byte, bool) {
1136 var j []byte
1137 ok := oldjonks.Get(xid, &j)
1138 return j, ok
1139}
1140
1141func honkworldwide(user *WhatAbout, honk *Honk) {
1142 jonk, _ := jonkjonk(user, honk)
1143 jonk["@context"] = itiswhatitis
1144 var buf bytes.Buffer
1145 jonk.Write(&buf)
1146 msg := buf.Bytes()
1147
1148 rcpts := make(map[string]bool)
1149 for _, a := range honk.Audience {
1150 if a == thewholeworld || a == user.URL || strings.HasSuffix(a, "/followers") {
1151 continue
1152 }
1153 var box *Box
1154 ok := boxofboxes.Get(a, &box)
1155 if ok && honk.Public && box.Shared != "" {
1156 rcpts["%"+box.Shared] = true
1157 } else {
1158 rcpts[a] = true
1159 }
1160 }
1161 if honk.Public {
1162 for _, f := range getdubs(user.ID) {
1163 if f.XID == user.URL {
1164 continue
1165 }
1166 var box *Box
1167 ok := boxofboxes.Get(f.XID, &box)
1168 if ok && box.Shared != "" {
1169 rcpts["%"+box.Shared] = true
1170 } else {
1171 rcpts[f.XID] = true
1172 }
1173 }
1174 }
1175 for a := range rcpts {
1176 go deliverate(0, user.Name, a, msg)
1177 }
1178}
1179
1180var oldjonkers = cacheNew(cacheOptions{Filler: func(name string) ([]byte, bool) {
1181 user, err := butwhatabout(name)
1182 if err != nil {
1183 return nil, false
1184 }
1185 about := markitzero(user.About)
1186
1187 j := junk.New()
1188 j["@context"] = itiswhatitis
1189 j["id"] = user.URL
1190 j["type"] = "Person"
1191 j["inbox"] = user.URL + "/inbox"
1192 j["outbox"] = user.URL + "/outbox"
1193 j["followers"] = user.URL + "/followers"
1194 j["following"] = user.URL + "/following"
1195 j["name"] = user.Display
1196 j["preferredUsername"] = user.Name
1197 j["summary"] = about
1198 j["url"] = user.URL
1199 a := junk.New()
1200 a["type"] = "Image"
1201 a["mediaType"] = "image/png"
1202 a["url"] = fmt.Sprintf("https://%s/a?a=%s", serverName, url.QueryEscape(user.URL))
1203 j["icon"] = a
1204 k := junk.New()
1205 k["id"] = user.URL + "#key"
1206 k["owner"] = user.URL
1207 k["publicKeyPem"] = user.Key
1208 j["publicKey"] = k
1209
1210 var buf bytes.Buffer
1211 j.Write(&buf)
1212 return buf.Bytes(), true
1213}, Duration: 1 * time.Minute})
1214
1215func asjonker(name string) ([]byte, bool) {
1216 var j []byte
1217 ok := oldjonkers.Get(name, &j)
1218 return j, ok
1219}
1220
1221var handfull = cacheNew(cacheOptions{Filler: func(name string) (string, bool) {
1222 m := strings.Split(name, "@")
1223 if len(m) != 2 {
1224 log.Printf("bad fish name: %s", name)
1225 return "", true
1226 }
1227 row := stmtGetXonker.QueryRow(name, "fishname")
1228 var href string
1229 err := row.Scan(&href)
1230 if err == nil {
1231 return href, true
1232 }
1233 log.Printf("fishing for %s", name)
1234 j, err := GetJunkFast(fmt.Sprintf("https://%s/.well-known/webfinger?resource=acct:%s", m[1], name))
1235 if err != nil {
1236 log.Printf("failed to go fish %s: %s", name, err)
1237 return "", true
1238 }
1239 links, _ := j.GetArray("links")
1240 for _, li := range links {
1241 l, ok := li.(junk.Junk)
1242 if !ok {
1243 continue
1244 }
1245 href, _ := l.GetString("href")
1246 rel, _ := l.GetString("rel")
1247 t, _ := l.GetString("type")
1248 if rel == "self" && friendorfoe(t) {
1249 _, err := stmtSaveXonker.Exec(name, href, "fishname")
1250 if err != nil {
1251 log.Printf("error saving fishname: %s", err)
1252 }
1253 return href, true
1254 }
1255 }
1256 return href, true
1257}})
1258
1259func gofish(name string) string {
1260 if name[0] == '@' {
1261 name = name[1:]
1262 }
1263 var href string
1264 handfull.Get(name, &href)
1265 return href
1266}
1267
1268func isactor(t string) bool {
1269 switch t {
1270 case "Person":
1271 case "Organization":
1272 case "Application":
1273 case "Service":
1274 default:
1275 return false
1276 }
1277 return true
1278}
1279
1280func investigate(name string) (*Honker, error) {
1281 if name == "" {
1282 return nil, fmt.Errorf("no name")
1283 }
1284 if name[0] == '@' {
1285 name = gofish(name)
1286 }
1287 if name == "" {
1288 return nil, fmt.Errorf("no name")
1289 }
1290 log.Printf("digging up some info on %s", name)
1291 obj, err := GetJunkFast(name)
1292 if err != nil {
1293 log.Printf("error investigating honker: %s", err)
1294 return nil, err
1295 }
1296 t, _ := obj.GetString("type")
1297 if !isactor(t) {
1298 log.Printf("it's not a person! %s", name)
1299 return nil, err
1300 }
1301 xid, _ := obj.GetString("id")
1302 handle, _ := obj.GetString("preferredUsername")
1303 return &Honker{XID: xid, Handle: handle}, nil
1304}