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 } else {
504 xid, _ = obj.GetString("id")
505 }
506 if obj != nil {
507 return xonkxonkfn(obj, originate(xid))
508 }
509 what = "honk"
510 case "Read":
511 xid, ok = item.GetString("object")
512 if ok {
513 if !needxonkid(user, xid) {
514 log.Printf("don't need read obj: %s", xid)
515 return nil
516 }
517 obj, err = GetJunkHardMode(xid)
518 if err != nil {
519 log.Printf("error getting read: %s", err)
520 return nil
521 }
522 return xonkxonkfn(obj, originate(xid))
523 }
524 return nil
525 case "Audio":
526 fallthrough
527 case "Video":
528 fallthrough
529 case "Question":
530 fallthrough
531 case "Note":
532 fallthrough
533 case "Article":
534 fallthrough
535 case "Page":
536 obj = item
537 what = "honk"
538 case "Event":
539 obj = item
540 what = "event"
541 default:
542 log.Printf("unknown activity: %s", what)
543 fd, _ := os.OpenFile("savedinbox.json", os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
544 item.Write(fd)
545 io.WriteString(fd, "\n")
546 fd.Close()
547 return nil
548 }
549
550 if obj != nil {
551 _, ok := obj.GetString("diaspora:guid")
552 if ok {
553 // friendica does the silliest bonks
554 c, ok := obj.FindString([]string{"source", "content"})
555 if ok {
556 re_link := regexp.MustCompile(`link='([^']*)'`)
557 m := re_link.FindStringSubmatch(c)
558 if len(m) > 1 {
559 xid := m[1]
560 log.Printf("getting friendica flavored bonk: %s", xid)
561 if !needxonkid(user, xid) {
562 return nil
563 }
564 newobj, err := GetJunkHardMode(xid)
565 if err != nil {
566 log.Printf("error getting bonk: %s: %s", xid, err)
567 } else {
568 obj = newobj
569 origin = originate(xid)
570 what = "bonk"
571 }
572 }
573 }
574 }
575 }
576
577 var xonk Honk
578 // early init
579 xonk.UserID = user.ID
580 xonk.Honker, _ = item.GetString("actor")
581 if xonk.Honker == "" {
582 xonk.Honker, _ = item.GetString("attributedTo")
583 }
584 if obj != nil {
585 if xonk.Honker == "" {
586 xonk.Honker = extractattrto(obj)
587 }
588 xonk.Oonker = extractattrto(obj)
589 if xonk.Oonker == xonk.Honker {
590 xonk.Oonker = ""
591 }
592 xonk.Audience = newphone(nil, obj)
593 }
594 xonk.Audience = append(xonk.Audience, xonk.Honker)
595 xonk.Audience = oneofakind(xonk.Audience)
596 for _, a := range xonk.Audience {
597 if a == user.URL {
598 xonk.Whofore = 1
599 }
600 }
601
602 if obj != nil {
603 ot, _ := obj.GetString("type")
604 url, _ = obj.GetString("url")
605 dt2, ok := obj.GetString("published")
606 if ok {
607 dt = dt2
608 }
609 xid, _ = obj.GetString("id")
610 precis, _ = obj.GetString("summary")
611 if precis == "" {
612 precis, _ = obj.GetString("name")
613 }
614 content, _ = obj.GetString("content")
615 if !strings.HasPrefix(content, "<p>") {
616 content = "<p>" + content
617 }
618 sens, _ := obj["sensitive"].(bool)
619 if sens && precis == "" {
620 precis = "unspecified horror"
621 }
622 rid, ok = obj.GetString("inReplyTo")
623 if !ok {
624 robj, ok := obj.GetMap("inReplyTo")
625 if ok {
626 rid, _ = robj.GetString("id")
627 }
628 }
629 convoy, _ = obj.GetString("context")
630 if strings.HasSuffix(convoy, "#context") &&
631 originate(convoy) != originate(xid) {
632 // friendica...
633 convoy = ""
634 }
635 if convoy == "" {
636 convoy, _ = obj.GetString("conversation")
637 }
638 if ot == "Question" {
639 if what == "honk" {
640 what = "qonk"
641 }
642 content += "<ul>"
643 ans, _ := obj.GetArray("oneOf")
644 for _, ai := range ans {
645 a, ok := ai.(junk.Junk)
646 if !ok {
647 continue
648 }
649 as, _ := a.GetString("name")
650 content += "<li>" + as
651 }
652 ans, _ = obj.GetArray("anyOf")
653 for _, ai := range ans {
654 a, ok := ai.(junk.Junk)
655 if !ok {
656 continue
657 }
658 as, _ := a.GetString("name")
659 content += "<li>" + as
660 }
661 content += "</ul>"
662 }
663 if what == "honk" && rid != "" {
664 what = "tonk"
665 }
666 atts, _ := obj.GetArray("attachment")
667 for i, atti := range atts {
668 att, ok := atti.(junk.Junk)
669 if !ok {
670 continue
671 }
672 at, _ := att.GetString("type")
673 mt, _ := att.GetString("mediaType")
674 u, _ := att.GetString("url")
675 name, _ := att.GetString("name")
676 desc, _ := att.GetString("summary")
677 if desc == "" {
678 desc = name
679 }
680 localize := false
681 if i > 4 {
682 log.Printf("excessive attachment: %s", at)
683 } else if at == "Document" || at == "Image" {
684 mt = strings.ToLower(mt)
685 log.Printf("attachment: %s %s", mt, u)
686 if mt == "text/plain" || strings.HasPrefix(mt, "image") {
687 localize = true
688 }
689 } else {
690 log.Printf("unknown attachment: %s", at)
691 }
692 if skipMedia(&xonk) {
693 localize = false
694 }
695 donk := savedonk(u, name, desc, mt, localize)
696 if donk != nil {
697 xonk.Donks = append(xonk.Donks, donk)
698 }
699 }
700 tags, _ := obj.GetArray("tag")
701 for _, tagi := range tags {
702 tag, ok := tagi.(junk.Junk)
703 if !ok {
704 continue
705 }
706 tt, _ := tag.GetString("type")
707 name, _ := tag.GetString("name")
708 desc, _ := tag.GetString("summary")
709 if desc == "" {
710 desc = name
711 }
712 if tt == "Emoji" {
713 icon, _ := tag.GetMap("icon")
714 mt, _ := icon.GetString("mediaType")
715 if mt == "" {
716 mt = "image/png"
717 }
718 u, _ := icon.GetString("url")
719 donk := savedonk(u, name, desc, mt, true)
720 if donk != nil {
721 xonk.Donks = append(xonk.Donks, donk)
722 }
723 }
724 if tt == "Hashtag" {
725 if name == "" || name == "#" {
726 // skip it
727 } else {
728 if name[0] != '#' {
729 name = "#" + name
730 }
731 xonk.Onts = append(xonk.Onts, name)
732 }
733 }
734 if tt == "Place" {
735 p := new(Place)
736 p.Name = name
737 p.Latitude, _ = tag["latitude"].(float64)
738 p.Longitude, _ = tag["longitude"].(float64)
739 p.Url, _ = tag.GetString("url")
740 xonk.Place = p
741 }
742 }
743 starttime, ok := obj.GetString("startTime")
744 if ok {
745 start, err := time.Parse(time.RFC3339, starttime)
746 if err == nil {
747 t := new(Time)
748 t.StartTime = start
749 endtime, _ := obj.GetString("endTime")
750 t.EndTime, _ = time.Parse(time.RFC3339, endtime)
751 dura, _ := obj.GetString("duration")
752 if strings.HasPrefix(dura, "PT") {
753 dura = strings.ToLower(dura[2:])
754 d, _ := time.ParseDuration(dura)
755 t.Duration = Duration(d)
756 }
757 xonk.Time = t
758 }
759 }
760 loca, ok := obj.GetMap("location")
761 if ok {
762 tt, _ := loca.GetString("type")
763 name, _ := loca.GetString("name")
764 if tt == "Place" {
765 p := new(Place)
766 p.Name = name
767 p.Latitude, _ = loca["latitude"].(float64)
768 p.Longitude, _ = loca["longitude"].(float64)
769 p.Url, _ = loca.GetString("url")
770 xonk.Place = p
771 }
772 }
773
774 xonk.Onts = oneofakind(xonk.Onts)
775 replyobj, ok := obj.GetMap("replies")
776 if ok {
777 items, ok := replyobj.GetArray("items")
778 if !ok {
779 first, ok := replyobj.GetMap("first")
780 if ok {
781 items, _ = first.GetArray("items")
782 }
783 }
784 for _, repl := range items {
785 s, ok := repl.(string)
786 if ok {
787 replies = append(replies, s)
788 }
789 }
790 }
791
792 }
793 if originate(xid) != origin {
794 log.Printf("original sin: %s <> %s", xid, origin)
795 item.Write(os.Stdout)
796 return nil
797 }
798
799 if currenttid == "" {
800 currenttid = convoy
801 }
802
803 if len(content) > 90001 {
804 log.Printf("content too long. truncating")
805 content = content[:90001]
806 }
807
808 // grab any inline imgs
809 imgfilt := htfilter.New()
810 imgfilt.Imager = inlineimgs
811 imgfilt.String(content)
812
813 // init xonk
814 xonk.What = what
815 xonk.XID = xid
816 xonk.RID = rid
817 xonk.Date, _ = time.Parse(time.RFC3339, dt)
818 xonk.URL = url
819 xonk.Noise = content
820 xonk.Precis = precis
821 xonk.Format = "html"
822 xonk.Convoy = convoy
823
824 if isUpdate {
825 log.Printf("something has changed! %s", xonk.XID)
826 prev := getxonk(user.ID, xonk.XID)
827 if prev == nil {
828 log.Printf("didn't find old version for update: %s", xonk.XID)
829 isUpdate = false
830 } else {
831 prev.Noise = xonk.Noise
832 prev.Precis = xonk.Precis
833 prev.Date = xonk.Date
834 prev.Donks = xonk.Donks
835 prev.Onts = xonk.Onts
836 prev.Place = xonk.Place
837 updatehonk(prev)
838 }
839 }
840 if !isUpdate && needxonk(user, &xonk) {
841 if rid != "" {
842 if needxonkid(user, rid) {
843 goingup++
844 saveonemore(rid)
845 goingup--
846 }
847 if convoy == "" {
848 xx := getxonk(user.ID, rid)
849 if xx != nil {
850 convoy = xx.Convoy
851 }
852 }
853 }
854 if convoy == "" {
855 convoy = currenttid
856 }
857 if convoy == "" {
858 convoy = "missing-" + xfiltrate()
859 currenttid = convoy
860 }
861 xonk.Convoy = convoy
862 savexonk(&xonk)
863 }
864 if goingup == 0 {
865 for _, replid := range replies {
866 if needxonkid(user, replid) {
867 log.Printf("missing a reply: %s", replid)
868 saveonemore(replid)
869 }
870 }
871 }
872 return &xonk
873 }
874
875 return xonkxonkfn(item, origin)
876}
877
878func rubadubdub(user *WhatAbout, req junk.Junk) {
879 xid, _ := req.GetString("id")
880 actor, _ := req.GetString("actor")
881 j := junk.New()
882 j["@context"] = itiswhatitis
883 j["id"] = user.URL + "/dub/" + url.QueryEscape(xid)
884 j["type"] = "Accept"
885 j["actor"] = user.URL
886 j["to"] = actor
887 j["published"] = time.Now().UTC().Format(time.RFC3339)
888 j["object"] = req
889
890 var buf bytes.Buffer
891 j.Write(&buf)
892 msg := buf.Bytes()
893
894 deliverate(0, user.Name, actor, msg)
895}
896
897func itakeitallback(user *WhatAbout, xid string) {
898 j := junk.New()
899 j["@context"] = itiswhatitis
900 j["id"] = user.URL + "/unsub/" + url.QueryEscape(xid)
901 j["type"] = "Undo"
902 j["actor"] = user.URL
903 j["to"] = xid
904 f := junk.New()
905 f["id"] = user.URL + "/sub/" + url.QueryEscape(xid)
906 f["type"] = "Follow"
907 f["actor"] = user.URL
908 f["to"] = xid
909 f["object"] = xid
910 j["object"] = f
911 j["published"] = time.Now().UTC().Format(time.RFC3339)
912
913 var buf bytes.Buffer
914 j.Write(&buf)
915 msg := buf.Bytes()
916
917 deliverate(0, user.Name, xid, msg)
918}
919
920func subsub(user *WhatAbout, xid string) {
921 if xid == "" {
922 log.Printf("can't subscribe to empty")
923 return
924 }
925 j := junk.New()
926 j["@context"] = itiswhatitis
927 j["id"] = user.URL + "/sub/" + url.QueryEscape(xid)
928 j["type"] = "Follow"
929 j["actor"] = user.URL
930 j["to"] = xid
931 j["object"] = xid
932 j["published"] = time.Now().UTC().Format(time.RFC3339)
933
934 var buf bytes.Buffer
935 j.Write(&buf)
936 msg := buf.Bytes()
937
938 deliverate(0, user.Name, xid, msg)
939}
940
941// returns activity, object
942func jonkjonk(user *WhatAbout, h *Honk) (junk.Junk, junk.Junk) {
943 dt := h.Date.Format(time.RFC3339)
944 var jo junk.Junk
945 j := junk.New()
946 j["id"] = user.URL + "/" + h.What + "/" + shortxid(h.XID)
947 j["actor"] = user.URL
948 j["published"] = dt
949 if h.Public {
950 j["to"] = []string{h.Audience[0], user.URL + "/followers"}
951 } else {
952 j["to"] = h.Audience[0]
953 }
954 if len(h.Audience) > 1 {
955 j["cc"] = h.Audience[1:]
956 }
957
958 switch h.What {
959 case "update":
960 fallthrough
961 case "tonk":
962 fallthrough
963 case "event":
964 fallthrough
965 case "honk":
966 j["type"] = "Create"
967 if h.What == "update" {
968 j["type"] = "Update"
969 }
970
971 jo = junk.New()
972 jo["id"] = h.XID
973 jo["type"] = "Note"
974 if h.What == "event" {
975 jo["type"] = "Event"
976 }
977 jo["published"] = dt
978 jo["url"] = h.XID
979 jo["attributedTo"] = user.URL
980 if h.RID != "" {
981 jo["inReplyTo"] = h.RID
982 }
983 if h.Convoy != "" {
984 jo["context"] = h.Convoy
985 jo["conversation"] = h.Convoy
986 }
987 jo["to"] = h.Audience[0]
988 if len(h.Audience) > 1 {
989 jo["cc"] = h.Audience[1:]
990 }
991 if !h.Public {
992 jo["directMessage"] = true
993 }
994 translate(h)
995 h.Noise = re_memes.ReplaceAllString(h.Noise, "")
996 jo["summary"] = html.EscapeString(h.Precis)
997 jo["content"] = ontologize(mentionize(h.Noise))
998 if strings.HasPrefix(h.Precis, "DZ:") {
999 jo["sensitive"] = true
1000 }
1001
1002 var replies []string
1003 for _, reply := range h.Replies {
1004 replies = append(replies, reply.XID)
1005 }
1006 if len(replies) > 0 {
1007 jr := junk.New()
1008 jr["type"] = "Collection"
1009 jr["totalItems"] = len(replies)
1010 jr["items"] = replies
1011 jo["replies"] = jr
1012 }
1013
1014 var tags []junk.Junk
1015 g := bunchofgrapes(h.Noise)
1016 for _, m := range g {
1017 t := junk.New()
1018 t["type"] = "Mention"
1019 t["name"] = m.who
1020 t["href"] = m.where
1021 tags = append(tags, t)
1022 }
1023 for _, o := range h.Onts {
1024 t := junk.New()
1025 t["type"] = "Hashtag"
1026 o = strings.ToLower(o)
1027 t["href"] = fmt.Sprintf("https://%s/o/%s", serverName, o[1:])
1028 t["name"] = o
1029 tags = append(tags, t)
1030 }
1031 herd := herdofemus(h.Noise)
1032 for _, e := range herd {
1033 t := junk.New()
1034 t["id"] = e.ID
1035 t["type"] = "Emoji"
1036 t["name"] = e.Name
1037 i := junk.New()
1038 i["type"] = "Image"
1039 i["mediaType"] = "image/png"
1040 i["url"] = e.ID
1041 t["icon"] = i
1042 tags = append(tags, t)
1043 }
1044 if p := h.Place; p != nil {
1045 t := junk.New()
1046 t["type"] = "Place"
1047 t["name"] = p.Name
1048 t["latitude"] = p.Latitude
1049 t["longitude"] = p.Longitude
1050 t["url"] = p.Url
1051 if h.What == "event" {
1052 jo["location"] = t
1053 } else {
1054 tags = append(tags, t)
1055 }
1056 }
1057 if len(tags) > 0 {
1058 jo["tag"] = tags
1059 }
1060 if t := h.Time; t != nil {
1061 jo["startTime"] = t.StartTime.Format(time.RFC3339)
1062 if t.Duration != 0 {
1063 jo["duration"] = "PT" + strings.ToUpper(t.Duration.String())
1064 }
1065 }
1066 var atts []junk.Junk
1067 for _, d := range h.Donks {
1068 if re_emus.MatchString(d.Name) {
1069 continue
1070 }
1071 jd := junk.New()
1072 jd["mediaType"] = d.Media
1073 jd["name"] = d.Name
1074 jd["summary"] = html.EscapeString(d.Desc)
1075 jd["type"] = "Document"
1076 jd["url"] = d.URL
1077 atts = append(atts, jd)
1078 }
1079 if len(atts) > 0 {
1080 jo["attachment"] = atts
1081 }
1082 j["object"] = jo
1083 case "bonk":
1084 j["type"] = "Announce"
1085 if h.Convoy != "" {
1086 j["context"] = h.Convoy
1087 }
1088 j["object"] = h.XID
1089 case "unbonk":
1090 b := junk.New()
1091 b["id"] = user.URL + "/" + "bonk" + "/" + shortxid(h.XID)
1092 b["type"] = "Announce"
1093 b["actor"] = user.URL
1094 if h.Convoy != "" {
1095 b["context"] = h.Convoy
1096 }
1097 b["object"] = h.XID
1098 j["type"] = "Undo"
1099 j["object"] = b
1100 case "zonk":
1101 j["type"] = "Delete"
1102 j["object"] = h.XID
1103 case "ack":
1104 j["type"] = "Read"
1105 j["object"] = h.XID
1106 case "deack":
1107 b := junk.New()
1108 b["id"] = user.URL + "/" + "ack" + "/" + shortxid(h.XID)
1109 b["type"] = "Read"
1110 b["actor"] = user.URL
1111 b["object"] = h.XID
1112 j["type"] = "Undo"
1113 j["object"] = b
1114 }
1115
1116 return j, jo
1117}
1118
1119var oldjonks = cacheNew(cacheOptions{Filler: func(xid string) ([]byte, bool) {
1120 row := stmtAnyXonk.QueryRow(xid)
1121 honk := scanhonk(row)
1122 if honk == nil || !honk.Public {
1123 return nil, true
1124 }
1125 user, _ := butwhatabout(honk.Username)
1126 rawhonks := gethonksbyconvoy(honk.UserID, honk.Convoy)
1127 reversehonks(rawhonks)
1128 for _, h := range rawhonks {
1129 if h.RID == honk.XID && h.Public && (h.Whofore == 2 || h.IsAcked()) {
1130 honk.Replies = append(honk.Replies, h)
1131 }
1132 }
1133 donksforhonks([]*Honk{honk})
1134 _, j := jonkjonk(user, honk)
1135 j["@context"] = itiswhatitis
1136 var buf bytes.Buffer
1137 j.Write(&buf)
1138 return buf.Bytes(), true
1139}})
1140
1141func gimmejonk(xid string) ([]byte, bool) {
1142 var j []byte
1143 ok := oldjonks.Get(xid, &j)
1144 return j, ok
1145}
1146
1147func honkworldwide(user *WhatAbout, honk *Honk) {
1148 jonk, _ := jonkjonk(user, honk)
1149 jonk["@context"] = itiswhatitis
1150 var buf bytes.Buffer
1151 jonk.Write(&buf)
1152 msg := buf.Bytes()
1153
1154 rcpts := make(map[string]bool)
1155 for _, a := range honk.Audience {
1156 if a == thewholeworld || a == user.URL || strings.HasSuffix(a, "/followers") {
1157 continue
1158 }
1159 var box *Box
1160 ok := boxofboxes.Get(a, &box)
1161 if ok && honk.Public && box.Shared != "" {
1162 rcpts["%"+box.Shared] = true
1163 } else {
1164 rcpts[a] = true
1165 }
1166 }
1167 if honk.Public {
1168 for _, f := range getdubs(user.ID) {
1169 if f.XID == user.URL {
1170 continue
1171 }
1172 var box *Box
1173 ok := boxofboxes.Get(f.XID, &box)
1174 if ok && box.Shared != "" {
1175 rcpts["%"+box.Shared] = true
1176 } else {
1177 rcpts[f.XID] = true
1178 }
1179 }
1180 }
1181 for a := range rcpts {
1182 go deliverate(0, user.Name, a, msg)
1183 }
1184}
1185
1186var oldjonkers = cacheNew(cacheOptions{Filler: func(name string) ([]byte, bool) {
1187 user, err := butwhatabout(name)
1188 if err != nil {
1189 return nil, false
1190 }
1191 about := markitzero(user.About)
1192
1193 j := junk.New()
1194 j["@context"] = itiswhatitis
1195 j["id"] = user.URL
1196 j["type"] = "Person"
1197 j["inbox"] = user.URL + "/inbox"
1198 j["outbox"] = user.URL + "/outbox"
1199 j["followers"] = user.URL + "/followers"
1200 j["following"] = user.URL + "/following"
1201 j["name"] = user.Display
1202 j["preferredUsername"] = user.Name
1203 j["summary"] = about
1204 j["url"] = user.URL
1205 a := junk.New()
1206 a["type"] = "Image"
1207 a["mediaType"] = "image/png"
1208 a["url"] = fmt.Sprintf("https://%s/a?a=%s", serverName, url.QueryEscape(user.URL))
1209 j["icon"] = a
1210 k := junk.New()
1211 k["id"] = user.URL + "#key"
1212 k["owner"] = user.URL
1213 k["publicKeyPem"] = user.Key
1214 j["publicKey"] = k
1215
1216 var buf bytes.Buffer
1217 j.Write(&buf)
1218 return buf.Bytes(), true
1219}, Duration: 1 * time.Minute})
1220
1221func asjonker(name string) ([]byte, bool) {
1222 var j []byte
1223 ok := oldjonkers.Get(name, &j)
1224 return j, ok
1225}
1226
1227var handfull = cacheNew(cacheOptions{Filler: func(name string) (string, bool) {
1228 m := strings.Split(name, "@")
1229 if len(m) != 2 {
1230 log.Printf("bad fish name: %s", name)
1231 return "", true
1232 }
1233 row := stmtGetXonker.QueryRow(name, "fishname")
1234 var href string
1235 err := row.Scan(&href)
1236 if err == nil {
1237 return href, true
1238 }
1239 log.Printf("fishing for %s", name)
1240 j, err := GetJunkFast(fmt.Sprintf("https://%s/.well-known/webfinger?resource=acct:%s", m[1], name))
1241 if err != nil {
1242 log.Printf("failed to go fish %s: %s", name, err)
1243 return "", true
1244 }
1245 links, _ := j.GetArray("links")
1246 for _, li := range links {
1247 l, ok := li.(junk.Junk)
1248 if !ok {
1249 continue
1250 }
1251 href, _ := l.GetString("href")
1252 rel, _ := l.GetString("rel")
1253 t, _ := l.GetString("type")
1254 if rel == "self" && friendorfoe(t) {
1255 _, err := stmtSaveXonker.Exec(name, href, "fishname")
1256 if err != nil {
1257 log.Printf("error saving fishname: %s", err)
1258 }
1259 return href, true
1260 }
1261 }
1262 return href, true
1263}})
1264
1265func gofish(name string) string {
1266 if name[0] == '@' {
1267 name = name[1:]
1268 }
1269 var href string
1270 handfull.Get(name, &href)
1271 return href
1272}
1273
1274func isactor(t string) bool {
1275 switch t {
1276 case "Person":
1277 case "Organization":
1278 case "Application":
1279 case "Service":
1280 default:
1281 return false
1282 }
1283 return true
1284}
1285
1286func investigate(name string) (*Honker, error) {
1287 if name == "" {
1288 return nil, fmt.Errorf("no name")
1289 }
1290 if name[0] == '@' {
1291 name = gofish(name)
1292 }
1293 if name == "" {
1294 return nil, fmt.Errorf("no name")
1295 }
1296 log.Printf("digging up some info on %s", name)
1297 obj, err := GetJunkFast(name)
1298 if err != nil {
1299 log.Printf("error investigating honker: %s", err)
1300 return nil, err
1301 }
1302 t, _ := obj.GetString("type")
1303 if !isactor(t) {
1304 log.Printf("it's not a person! %s", name)
1305 return nil, err
1306 }
1307 xid, _ := obj.GetString("id")
1308 handle, _ := obj.GetString("preferredUsername")
1309 return &Honker{XID: xid, Handle: handle}, nil
1310}