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 if obj != nil {
506 t, _ := obj.GetString("type")
507 switch t {
508 case "Event":
509 what = "event"
510 }
511 }
512 case "Read":
513 xid, ok = item.GetString("object")
514 if ok {
515 if !needxonkid(user, xid) {
516 log.Printf("don't need read obj: %s", xid)
517 return nil
518 }
519 obj, err = GetJunkHardMode(xid)
520 if err != nil {
521 log.Printf("error getting read: %s", err)
522 return nil
523 }
524 return xonkxonkfn(obj, originate(xid))
525 }
526 return nil
527 case "Audio":
528 fallthrough
529 case "Video":
530 fallthrough
531 case "Question":
532 fallthrough
533 case "Note":
534 fallthrough
535 case "Article":
536 fallthrough
537 case "Page":
538 obj = item
539 what = "honk"
540 case "Event":
541 obj = item
542 what = "event"
543 default:
544 log.Printf("unknown activity: %s", what)
545 fd, _ := os.OpenFile("savedinbox.json", os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
546 item.Write(fd)
547 io.WriteString(fd, "\n")
548 fd.Close()
549 return nil
550 }
551
552 if obj != nil {
553 _, ok := obj.GetString("diaspora:guid")
554 if ok {
555 // friendica does the silliest bonks
556 c, ok := obj.FindString([]string{"source", "content"})
557 if ok {
558 re_link := regexp.MustCompile(`link='([^']*)'`)
559 m := re_link.FindStringSubmatch(c)
560 if len(m) > 1 {
561 xid := m[1]
562 log.Printf("getting friendica flavored bonk: %s", xid)
563 if !needxonkid(user, xid) {
564 return nil
565 }
566 newobj, err := GetJunkHardMode(xid)
567 if err != nil {
568 log.Printf("error getting bonk: %s: %s", xid, err)
569 } else {
570 obj = newobj
571 origin = originate(xid)
572 what = "bonk"
573 }
574 }
575 }
576 }
577 }
578
579 var xonk Honk
580 // early init
581 xonk.UserID = user.ID
582 xonk.Honker, _ = item.GetString("actor")
583 if xonk.Honker == "" {
584 xonk.Honker, _ = item.GetString("attributedTo")
585 }
586 if obj != nil {
587 if xonk.Honker == "" {
588 xonk.Honker = extractattrto(obj)
589 }
590 xonk.Oonker = extractattrto(obj)
591 if xonk.Oonker == xonk.Honker {
592 xonk.Oonker = ""
593 }
594 xonk.Audience = newphone(nil, obj)
595 }
596 xonk.Audience = append(xonk.Audience, xonk.Honker)
597 xonk.Audience = oneofakind(xonk.Audience)
598 for _, a := range xonk.Audience {
599 if a == user.URL {
600 xonk.Whofore = 1
601 }
602 }
603
604 if obj != nil {
605 ot, _ := obj.GetString("type")
606 url, _ = obj.GetString("url")
607 dt2, ok := obj.GetString("published")
608 if ok {
609 dt = dt2
610 }
611 xid, _ = obj.GetString("id")
612 precis, _ = obj.GetString("summary")
613 if precis == "" {
614 precis, _ = obj.GetString("name")
615 }
616 content, _ = obj.GetString("content")
617 if !strings.HasPrefix(content, "<p>") {
618 content = "<p>" + content
619 }
620 sens, _ := obj["sensitive"].(bool)
621 if sens && precis == "" {
622 precis = "unspecified horror"
623 }
624 rid, ok = obj.GetString("inReplyTo")
625 if !ok {
626 robj, ok := obj.GetMap("inReplyTo")
627 if ok {
628 rid, _ = robj.GetString("id")
629 }
630 }
631 convoy, _ = obj.GetString("context")
632 if strings.HasSuffix(convoy, "#context") &&
633 originate(convoy) != originate(xid) {
634 // friendica...
635 convoy = ""
636 }
637 if convoy == "" {
638 convoy, _ = obj.GetString("conversation")
639 }
640 if ot == "Question" {
641 if what == "honk" {
642 what = "qonk"
643 }
644 content += "<ul>"
645 ans, _ := obj.GetArray("oneOf")
646 for _, ai := range ans {
647 a, ok := ai.(junk.Junk)
648 if !ok {
649 continue
650 }
651 as, _ := a.GetString("name")
652 content += "<li>" + as
653 }
654 ans, _ = obj.GetArray("anyOf")
655 for _, ai := range ans {
656 a, ok := ai.(junk.Junk)
657 if !ok {
658 continue
659 }
660 as, _ := a.GetString("name")
661 content += "<li>" + as
662 }
663 content += "</ul>"
664 }
665 if what == "honk" && rid != "" {
666 what = "tonk"
667 }
668 atts, _ := obj.GetArray("attachment")
669 for i, atti := range atts {
670 att, ok := atti.(junk.Junk)
671 if !ok {
672 continue
673 }
674 at, _ := att.GetString("type")
675 mt, _ := att.GetString("mediaType")
676 u, _ := att.GetString("url")
677 name, _ := att.GetString("name")
678 desc, _ := att.GetString("summary")
679 if desc == "" {
680 desc = name
681 }
682 localize := false
683 if i > 4 {
684 log.Printf("excessive attachment: %s", at)
685 } else if at == "Document" || at == "Image" {
686 mt = strings.ToLower(mt)
687 log.Printf("attachment: %s %s", mt, u)
688 if mt == "text/plain" || strings.HasPrefix(mt, "image") {
689 localize = true
690 }
691 } else {
692 log.Printf("unknown attachment: %s", at)
693 }
694 if skipMedia(&xonk) {
695 localize = false
696 }
697 donk := savedonk(u, name, desc, mt, localize)
698 if donk != nil {
699 xonk.Donks = append(xonk.Donks, donk)
700 }
701 }
702 tags, _ := obj.GetArray("tag")
703 for _, tagi := range tags {
704 tag, ok := tagi.(junk.Junk)
705 if !ok {
706 continue
707 }
708 tt, _ := tag.GetString("type")
709 name, _ := tag.GetString("name")
710 desc, _ := tag.GetString("summary")
711 if desc == "" {
712 desc = name
713 }
714 if tt == "Emoji" {
715 icon, _ := tag.GetMap("icon")
716 mt, _ := icon.GetString("mediaType")
717 if mt == "" {
718 mt = "image/png"
719 }
720 u, _ := icon.GetString("url")
721 donk := savedonk(u, name, desc, mt, true)
722 if donk != nil {
723 xonk.Donks = append(xonk.Donks, donk)
724 }
725 }
726 if tt == "Hashtag" {
727 if name == "" || name == "#" {
728 // skip it
729 } else {
730 if name[0] != '#' {
731 name = "#" + name
732 }
733 xonk.Onts = append(xonk.Onts, name)
734 }
735 }
736 if tt == "Place" {
737 p := new(Place)
738 p.Name = name
739 p.Latitude, _ = tag["latitude"].(float64)
740 p.Longitude, _ = tag["longitude"].(float64)
741 p.Url, _ = tag.GetString("url")
742 xonk.Place = p
743 }
744 }
745 starttime, ok := obj.GetString("startTime")
746 if ok {
747 start, err := time.Parse(time.RFC3339, starttime)
748 if err == nil {
749 t := new(Time)
750 t.StartTime = start
751 endtime, _ := obj.GetString("endTime")
752 t.EndTime, _ = time.Parse(time.RFC3339, endtime)
753 dura, _ := obj.GetString("duration")
754 if strings.HasPrefix(dura, "PT") {
755 dura = strings.ToLower(dura[2:])
756 d, _ := time.ParseDuration(dura)
757 t.Duration = Duration(d)
758 }
759 xonk.Time = t
760 }
761 }
762 loca, ok := obj.GetMap("location")
763 if ok {
764 tt, _ := loca.GetString("type")
765 name, _ := loca.GetString("name")
766 if tt == "Place" {
767 p := new(Place)
768 p.Name = name
769 p.Latitude, _ = loca["latitude"].(float64)
770 p.Longitude, _ = loca["longitude"].(float64)
771 p.Url, _ = loca.GetString("url")
772 xonk.Place = p
773 }
774 }
775
776 xonk.Onts = oneofakind(xonk.Onts)
777 replyobj, ok := obj.GetMap("replies")
778 if ok {
779 items, ok := replyobj.GetArray("items")
780 if !ok {
781 first, ok := replyobj.GetMap("first")
782 if ok {
783 items, _ = first.GetArray("items")
784 }
785 }
786 for _, repl := range items {
787 s, ok := repl.(string)
788 if ok {
789 replies = append(replies, s)
790 }
791 }
792 }
793
794 }
795 if originate(xid) != origin {
796 log.Printf("original sin: %s <> %s", xid, origin)
797 item.Write(os.Stdout)
798 return nil
799 }
800
801 if currenttid == "" {
802 currenttid = convoy
803 }
804
805 if len(content) > 90001 {
806 log.Printf("content too long. truncating")
807 content = content[:90001]
808 }
809
810 // grab any inline imgs
811 imgfilt := htfilter.New()
812 imgfilt.Imager = inlineimgs
813 imgfilt.String(content)
814
815 // init xonk
816 xonk.What = what
817 xonk.XID = xid
818 xonk.RID = rid
819 xonk.Date, _ = time.Parse(time.RFC3339, dt)
820 xonk.URL = url
821 xonk.Noise = content
822 xonk.Precis = precis
823 xonk.Format = "html"
824 xonk.Convoy = convoy
825
826 if isUpdate {
827 log.Printf("something has changed! %s", xonk.XID)
828 prev := getxonk(user.ID, xonk.XID)
829 if prev == nil {
830 log.Printf("didn't find old version for update: %s", xonk.XID)
831 isUpdate = false
832 } else {
833 prev.Noise = xonk.Noise
834 prev.Precis = xonk.Precis
835 prev.Date = xonk.Date
836 prev.Donks = xonk.Donks
837 prev.Onts = xonk.Onts
838 prev.Place = xonk.Place
839 updatehonk(prev)
840 }
841 }
842 if !isUpdate && needxonk(user, &xonk) {
843 if rid != "" {
844 if needxonkid(user, rid) {
845 goingup++
846 saveonemore(rid)
847 goingup--
848 }
849 if convoy == "" {
850 xx := getxonk(user.ID, rid)
851 if xx != nil {
852 convoy = xx.Convoy
853 }
854 }
855 }
856 if convoy == "" {
857 convoy = currenttid
858 }
859 if convoy == "" {
860 convoy = "missing-" + xfiltrate()
861 currenttid = convoy
862 }
863 xonk.Convoy = convoy
864 savexonk(&xonk)
865 }
866 if goingup == 0 {
867 for _, replid := range replies {
868 if needxonkid(user, replid) {
869 log.Printf("missing a reply: %s", replid)
870 saveonemore(replid)
871 }
872 }
873 }
874 return &xonk
875 }
876
877 return xonkxonkfn(item, origin)
878}
879
880func rubadubdub(user *WhatAbout, req junk.Junk) {
881 xid, _ := req.GetString("id")
882 actor, _ := req.GetString("actor")
883 j := junk.New()
884 j["@context"] = itiswhatitis
885 j["id"] = user.URL + "/dub/" + url.QueryEscape(xid)
886 j["type"] = "Accept"
887 j["actor"] = user.URL
888 j["to"] = actor
889 j["published"] = time.Now().UTC().Format(time.RFC3339)
890 j["object"] = req
891
892 var buf bytes.Buffer
893 j.Write(&buf)
894 msg := buf.Bytes()
895
896 deliverate(0, user.Name, actor, msg)
897}
898
899func itakeitallback(user *WhatAbout, xid string) {
900 j := junk.New()
901 j["@context"] = itiswhatitis
902 j["id"] = user.URL + "/unsub/" + url.QueryEscape(xid)
903 j["type"] = "Undo"
904 j["actor"] = user.URL
905 j["to"] = xid
906 f := junk.New()
907 f["id"] = user.URL + "/sub/" + url.QueryEscape(xid)
908 f["type"] = "Follow"
909 f["actor"] = user.URL
910 f["to"] = xid
911 f["object"] = xid
912 j["object"] = f
913 j["published"] = time.Now().UTC().Format(time.RFC3339)
914
915 var buf bytes.Buffer
916 j.Write(&buf)
917 msg := buf.Bytes()
918
919 deliverate(0, user.Name, xid, msg)
920}
921
922func subsub(user *WhatAbout, xid string) {
923 if xid == "" {
924 log.Printf("can't subscribe to empty")
925 return
926 }
927 j := junk.New()
928 j["@context"] = itiswhatitis
929 j["id"] = user.URL + "/sub/" + url.QueryEscape(xid)
930 j["type"] = "Follow"
931 j["actor"] = user.URL
932 j["to"] = xid
933 j["object"] = xid
934 j["published"] = time.Now().UTC().Format(time.RFC3339)
935
936 var buf bytes.Buffer
937 j.Write(&buf)
938 msg := buf.Bytes()
939
940 deliverate(0, user.Name, xid, msg)
941}
942
943// returns activity, object
944func jonkjonk(user *WhatAbout, h *Honk) (junk.Junk, junk.Junk) {
945 dt := h.Date.Format(time.RFC3339)
946 var jo junk.Junk
947 j := junk.New()
948 j["id"] = user.URL + "/" + h.What + "/" + shortxid(h.XID)
949 j["actor"] = user.URL
950 j["published"] = dt
951 if h.Public {
952 j["to"] = []string{h.Audience[0], user.URL + "/followers"}
953 } else {
954 j["to"] = h.Audience[0]
955 }
956 if len(h.Audience) > 1 {
957 j["cc"] = h.Audience[1:]
958 }
959
960 switch h.What {
961 case "update":
962 fallthrough
963 case "tonk":
964 fallthrough
965 case "event":
966 fallthrough
967 case "honk":
968 j["type"] = "Create"
969 if h.What == "update" {
970 j["type"] = "Update"
971 }
972
973 jo = junk.New()
974 jo["id"] = h.XID
975 jo["type"] = "Note"
976 if h.What == "event" {
977 jo["type"] = "Event"
978 }
979 jo["published"] = dt
980 jo["url"] = h.XID
981 jo["attributedTo"] = user.URL
982 if h.RID != "" {
983 jo["inReplyTo"] = h.RID
984 }
985 if h.Convoy != "" {
986 jo["context"] = h.Convoy
987 jo["conversation"] = h.Convoy
988 }
989 jo["to"] = h.Audience[0]
990 if len(h.Audience) > 1 {
991 jo["cc"] = h.Audience[1:]
992 }
993 if !h.Public {
994 jo["directMessage"] = true
995 }
996 translate(h)
997 h.Noise = re_memes.ReplaceAllString(h.Noise, "")
998 jo["summary"] = html.EscapeString(h.Precis)
999 jo["content"] = ontologize(mentionize(h.Noise))
1000 if strings.HasPrefix(h.Precis, "DZ:") {
1001 jo["sensitive"] = true
1002 }
1003
1004 var replies []string
1005 for _, reply := range h.Replies {
1006 replies = append(replies, reply.XID)
1007 }
1008 if len(replies) > 0 {
1009 jr := junk.New()
1010 jr["type"] = "Collection"
1011 jr["totalItems"] = len(replies)
1012 jr["items"] = replies
1013 jo["replies"] = jr
1014 }
1015
1016 var tags []junk.Junk
1017 g := bunchofgrapes(h.Noise)
1018 for _, m := range g {
1019 t := junk.New()
1020 t["type"] = "Mention"
1021 t["name"] = m.who
1022 t["href"] = m.where
1023 tags = append(tags, t)
1024 }
1025 for _, o := range h.Onts {
1026 t := junk.New()
1027 t["type"] = "Hashtag"
1028 o = strings.ToLower(o)
1029 t["href"] = fmt.Sprintf("https://%s/o/%s", serverName, o[1:])
1030 t["name"] = o
1031 tags = append(tags, t)
1032 }
1033 herd := herdofemus(h.Noise)
1034 for _, e := range herd {
1035 t := junk.New()
1036 t["id"] = e.ID
1037 t["type"] = "Emoji"
1038 t["name"] = e.Name
1039 i := junk.New()
1040 i["type"] = "Image"
1041 i["mediaType"] = "image/png"
1042 i["url"] = e.ID
1043 t["icon"] = i
1044 tags = append(tags, t)
1045 }
1046 if p := h.Place; p != nil {
1047 t := junk.New()
1048 t["type"] = "Place"
1049 t["name"] = p.Name
1050 t["latitude"] = p.Latitude
1051 t["longitude"] = p.Longitude
1052 t["url"] = p.Url
1053 if h.What == "event" {
1054 jo["location"] = t
1055 } else {
1056 tags = append(tags, t)
1057 }
1058 }
1059 if len(tags) > 0 {
1060 jo["tag"] = tags
1061 }
1062 if t := h.Time; t != nil {
1063 jo["startTime"] = t.StartTime.Format(time.RFC3339)
1064 if t.Duration != 0 {
1065 jo["duration"] = "PT" + strings.ToUpper(t.Duration.String())
1066 }
1067 }
1068 var atts []junk.Junk
1069 for _, d := range h.Donks {
1070 if re_emus.MatchString(d.Name) {
1071 continue
1072 }
1073 jd := junk.New()
1074 jd["mediaType"] = d.Media
1075 jd["name"] = d.Name
1076 jd["summary"] = html.EscapeString(d.Desc)
1077 jd["type"] = "Document"
1078 jd["url"] = d.URL
1079 atts = append(atts, jd)
1080 }
1081 if len(atts) > 0 {
1082 jo["attachment"] = atts
1083 }
1084 j["object"] = jo
1085 case "bonk":
1086 j["type"] = "Announce"
1087 if h.Convoy != "" {
1088 j["context"] = h.Convoy
1089 }
1090 j["object"] = h.XID
1091 case "unbonk":
1092 b := junk.New()
1093 b["id"] = user.URL + "/" + "bonk" + "/" + shortxid(h.XID)
1094 b["type"] = "Announce"
1095 b["actor"] = user.URL
1096 if h.Convoy != "" {
1097 b["context"] = h.Convoy
1098 }
1099 b["object"] = h.XID
1100 j["type"] = "Undo"
1101 j["object"] = b
1102 case "zonk":
1103 j["type"] = "Delete"
1104 j["object"] = h.XID
1105 case "ack":
1106 j["type"] = "Read"
1107 j["object"] = h.XID
1108 case "deack":
1109 b := junk.New()
1110 b["id"] = user.URL + "/" + "ack" + "/" + shortxid(h.XID)
1111 b["type"] = "Read"
1112 b["actor"] = user.URL
1113 b["object"] = h.XID
1114 j["type"] = "Undo"
1115 j["object"] = b
1116 }
1117
1118 return j, jo
1119}
1120
1121var oldjonks = cacheNew(cacheOptions{Filler: func(xid string) ([]byte, bool) {
1122 row := stmtAnyXonk.QueryRow(xid)
1123 honk := scanhonk(row)
1124 if honk == nil || !honk.Public {
1125 return nil, true
1126 }
1127 user, _ := butwhatabout(honk.Username)
1128 rawhonks := gethonksbyconvoy(honk.UserID, honk.Convoy)
1129 reversehonks(rawhonks)
1130 for _, h := range rawhonks {
1131 if h.RID == honk.XID && h.Public && (h.Whofore == 2 || h.IsAcked()) {
1132 honk.Replies = append(honk.Replies, h)
1133 }
1134 }
1135 donksforhonks([]*Honk{honk})
1136 _, j := jonkjonk(user, honk)
1137 j["@context"] = itiswhatitis
1138 var buf bytes.Buffer
1139 j.Write(&buf)
1140 return buf.Bytes(), true
1141}})
1142
1143func gimmejonk(xid string) ([]byte, bool) {
1144 var j []byte
1145 ok := oldjonks.Get(xid, &j)
1146 return j, ok
1147}
1148
1149func honkworldwide(user *WhatAbout, honk *Honk) {
1150 jonk, _ := jonkjonk(user, honk)
1151 jonk["@context"] = itiswhatitis
1152 var buf bytes.Buffer
1153 jonk.Write(&buf)
1154 msg := buf.Bytes()
1155
1156 rcpts := make(map[string]bool)
1157 for _, a := range honk.Audience {
1158 if a == thewholeworld || a == user.URL || strings.HasSuffix(a, "/followers") {
1159 continue
1160 }
1161 var box *Box
1162 ok := boxofboxes.Get(a, &box)
1163 if ok && honk.Public && box.Shared != "" {
1164 rcpts["%"+box.Shared] = true
1165 } else {
1166 rcpts[a] = true
1167 }
1168 }
1169 if honk.Public {
1170 for _, f := range getdubs(user.ID) {
1171 if f.XID == user.URL {
1172 continue
1173 }
1174 var box *Box
1175 ok := boxofboxes.Get(f.XID, &box)
1176 if ok && box.Shared != "" {
1177 rcpts["%"+box.Shared] = true
1178 } else {
1179 rcpts[f.XID] = true
1180 }
1181 }
1182 }
1183 for a := range rcpts {
1184 go deliverate(0, user.Name, a, msg)
1185 }
1186}
1187
1188var oldjonkers = cacheNew(cacheOptions{Filler: func(name string) ([]byte, bool) {
1189 user, err := butwhatabout(name)
1190 if err != nil {
1191 return nil, false
1192 }
1193 about := markitzero(user.About)
1194
1195 j := junk.New()
1196 j["@context"] = itiswhatitis
1197 j["id"] = user.URL
1198 j["type"] = "Person"
1199 j["inbox"] = user.URL + "/inbox"
1200 j["outbox"] = user.URL + "/outbox"
1201 j["followers"] = user.URL + "/followers"
1202 j["following"] = user.URL + "/following"
1203 j["name"] = user.Display
1204 j["preferredUsername"] = user.Name
1205 j["summary"] = about
1206 j["url"] = user.URL
1207 a := junk.New()
1208 a["type"] = "Image"
1209 a["mediaType"] = "image/png"
1210 a["url"] = fmt.Sprintf("https://%s/a?a=%s", serverName, url.QueryEscape(user.URL))
1211 j["icon"] = a
1212 k := junk.New()
1213 k["id"] = user.URL + "#key"
1214 k["owner"] = user.URL
1215 k["publicKeyPem"] = user.Key
1216 j["publicKey"] = k
1217
1218 var buf bytes.Buffer
1219 j.Write(&buf)
1220 return buf.Bytes(), true
1221}, Duration: 1 * time.Minute})
1222
1223func asjonker(name string) ([]byte, bool) {
1224 var j []byte
1225 ok := oldjonkers.Get(name, &j)
1226 return j, ok
1227}
1228
1229var handfull = cacheNew(cacheOptions{Filler: func(name string) (string, bool) {
1230 m := strings.Split(name, "@")
1231 if len(m) != 2 {
1232 log.Printf("bad fish name: %s", name)
1233 return "", true
1234 }
1235 row := stmtGetXonker.QueryRow(name, "fishname")
1236 var href string
1237 err := row.Scan(&href)
1238 if err == nil {
1239 return href, true
1240 }
1241 log.Printf("fishing for %s", name)
1242 j, err := GetJunkFast(fmt.Sprintf("https://%s/.well-known/webfinger?resource=acct:%s", m[1], name))
1243 if err != nil {
1244 log.Printf("failed to go fish %s: %s", name, err)
1245 return "", true
1246 }
1247 links, _ := j.GetArray("links")
1248 for _, li := range links {
1249 l, ok := li.(junk.Junk)
1250 if !ok {
1251 continue
1252 }
1253 href, _ := l.GetString("href")
1254 rel, _ := l.GetString("rel")
1255 t, _ := l.GetString("type")
1256 if rel == "self" && friendorfoe(t) {
1257 _, err := stmtSaveXonker.Exec(name, href, "fishname")
1258 if err != nil {
1259 log.Printf("error saving fishname: %s", err)
1260 }
1261 return href, true
1262 }
1263 }
1264 return href, true
1265}})
1266
1267func gofish(name string) string {
1268 if name[0] == '@' {
1269 name = name[1:]
1270 }
1271 var href string
1272 handfull.Get(name, &href)
1273 return href
1274}
1275
1276func isactor(t string) bool {
1277 switch t {
1278 case "Person":
1279 case "Organization":
1280 case "Application":
1281 case "Service":
1282 default:
1283 return false
1284 }
1285 return true
1286}
1287
1288func investigate(name string) (*Honker, error) {
1289 if name == "" {
1290 return nil, fmt.Errorf("no name")
1291 }
1292 if name[0] == '@' {
1293 name = gofish(name)
1294 }
1295 if name == "" {
1296 return nil, fmt.Errorf("no name")
1297 }
1298 log.Printf("digging up some info on %s", name)
1299 obj, err := GetJunkFast(name)
1300 if err != nil {
1301 log.Printf("error investigating honker: %s", err)
1302 return nil, err
1303 }
1304 t, _ := obj.GetString("type")
1305 if !isactor(t) {
1306 log.Printf("it's not a person! %s", name)
1307 return nil, err
1308 }
1309 xid, _ := obj.GetString("id")
1310 handle, _ := obj.GetString("preferredUsername")
1311 return &Honker{XID: xid, Handle: handle}, nil
1312}