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 "io"
24 "log"
25 notrand "math/rand"
26 "net/http"
27 "net/url"
28 "os"
29 "strings"
30 "sync"
31 "time"
32
33 "humungus.tedunangst.com/r/webs/htfilter"
34 "humungus.tedunangst.com/r/webs/httpsig"
35 "humungus.tedunangst.com/r/webs/image"
36 "humungus.tedunangst.com/r/webs/junk"
37)
38
39var theonetruename = `application/ld+json; profile="https://www.w3.org/ns/activitystreams"`
40var thefakename = `application/activity+json`
41var falsenames = []string{
42 `application/ld+json`,
43 `application/activity+json`,
44}
45var itiswhatitis = "https://www.w3.org/ns/activitystreams"
46var thewholeworld = "https://www.w3.org/ns/activitystreams#Public"
47
48func friendorfoe(ct string) bool {
49 ct = strings.ToLower(ct)
50 for _, at := range falsenames {
51 if strings.HasPrefix(ct, at) {
52 return true
53 }
54 }
55 return false
56}
57
58func PostJunk(keyname string, key *rsa.PrivateKey, url string, j junk.Junk) error {
59 var buf bytes.Buffer
60 j.Write(&buf)
61 return PostMsg(keyname, key, url, buf.Bytes())
62}
63
64func PostMsg(keyname string, key *rsa.PrivateKey, url string, msg []byte) error {
65 client := http.DefaultClient
66 req, err := http.NewRequest("POST", url, bytes.NewReader(msg))
67 if err != nil {
68 return err
69 }
70 req.Header.Set("User-Agent", "honksnonk/5.0; "+serverName)
71 req.Header.Set("Content-Type", theonetruename)
72 httpsig.SignRequest(keyname, key, req, msg)
73 resp, err := client.Do(req)
74 if err != nil {
75 return err
76 }
77 resp.Body.Close()
78 switch resp.StatusCode {
79 case 200:
80 case 201:
81 case 202:
82 default:
83 return fmt.Errorf("http post status: %d", resp.StatusCode)
84 }
85 log.Printf("successful post: %s %d", url, resp.StatusCode)
86 return nil
87}
88
89func GetJunk(url string) (junk.Junk, error) {
90 return GetJunkTimeout(url, 30*time.Second)
91}
92
93func GetJunkFast(url string) (junk.Junk, error) {
94 return GetJunkTimeout(url, 5*time.Second)
95}
96
97func GetJunkHardMode(url string) (junk.Junk, error) {
98 j, err := GetJunk(url)
99 if err != nil {
100 emsg := err.Error()
101 if emsg == "http get status: 502" || strings.Contains(emsg, "timeout") {
102 log.Printf("trying again after error: %s", emsg)
103 time.Sleep(time.Duration(60+notrand.Int63n(60)) * time.Second)
104 j, err = GetJunk(url)
105 if err != nil {
106 log.Printf("still couldn't get it")
107 } else {
108 log.Printf("retry success!")
109 }
110 }
111 }
112 return j, err
113}
114
115func GetJunkTimeout(url string, timeout time.Duration) (junk.Junk, error) {
116 at := thefakename
117 if strings.Contains(url, ".well-known/webfinger?resource") {
118 at = "application/jrd+json"
119 }
120 return junk.Get(url, junk.GetArgs{
121 Accept: at,
122 Agent: "honksnonk/5.0; " + serverName,
123 Timeout: timeout,
124 })
125}
126
127func savedonk(url string, name, desc, media string, localize bool) *Donk {
128 if url == "" {
129 return nil
130 }
131 donk := finddonk(url)
132 if donk != nil {
133 return donk
134 }
135 donk = new(Donk)
136 log.Printf("saving donk: %s", url)
137 xid := xfiltrate()
138 data := []byte{}
139 if localize {
140 resp, err := http.Get(url)
141 if err != nil {
142 log.Printf("error fetching %s: %s", url, err)
143 localize = false
144 goto saveit
145 }
146 defer resp.Body.Close()
147 if resp.StatusCode != 200 {
148 localize = false
149 goto saveit
150 }
151 var buf bytes.Buffer
152 limiter := io.LimitReader(resp.Body, 10*1024*1024)
153 io.Copy(&buf, limiter)
154
155 data = buf.Bytes()
156 if len(data) == 10*1024*1024 {
157 log.Printf("truncation likely")
158 }
159 if strings.HasPrefix(media, "image") {
160 img, err := image.Vacuum(&buf,
161 image.Params{LimitSize: 4800 * 4800, MaxWidth: 2048, MaxHeight: 2048})
162 if err != nil {
163 log.Printf("unable to decode image: %s", err)
164 localize = false
165 data = []byte{}
166 goto saveit
167 }
168 data = img.Data
169 format := img.Format
170 media = "image/" + format
171 if format == "jpeg" {
172 format = "jpg"
173 }
174 xid = xid + "." + format
175 } else if len(data) > 100000 {
176 log.Printf("not saving large attachment")
177 localize = false
178 data = []byte{}
179 }
180 }
181saveit:
182 fileid, err := savefile(xid, name, desc, url, media, localize, data)
183 if err != nil {
184 log.Printf("error saving file %s: %s", url, err)
185 return nil
186 }
187 donk.FileID = fileid
188 donk.XID = xid
189 return donk
190}
191
192func iszonked(userid int64, xid string) bool {
193 row := stmtFindZonk.QueryRow(userid, xid)
194 var id int64
195 err := row.Scan(&id)
196 if err == nil {
197 return true
198 }
199 if err != sql.ErrNoRows {
200 log.Printf("err querying zonk: %s", err)
201 }
202 return false
203}
204
205func needxonk(user *WhatAbout, x *Honk) bool {
206 if rejectnote(x) {
207 log.Printf("not saving thumb biter? %s via %s", x.XID, x.Honker)
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 log.Printf("don't need thumb biter? %s", xid)
218 return false
219 }
220 if iszonked(user.ID, xid) {
221 log.Printf("already zonked: %s", xid)
222 return false
223 }
224 row := stmtFindXonk.QueryRow(user.ID, xid)
225 var id int64
226 err := row.Scan(&id)
227 if err == nil {
228 return false
229 }
230 if err != sql.ErrNoRows {
231 log.Printf("err querying xonk: %s", err)
232 }
233 return true
234}
235
236func eradicatexonk(userid int64, xid string) {
237 xonk := getxonk(userid, xid)
238 if xonk != nil {
239 deletehonk(xonk.ID)
240 }
241 _, err := stmtSaveZonker.Exec(userid, xid, "zonk")
242 if err != nil {
243 log.Printf("error eradicating: %s", err)
244 }
245}
246
247func savexonk(x *Honk) {
248 log.Printf("saving xonk: %s", x.XID)
249 go prehandle(x.Honker)
250 go prehandle(x.Oonker)
251 savehonk(x)
252}
253
254type Box struct {
255 In string
256 Out string
257 Shared string
258}
259
260var boxofboxes = make(map[string]*Box)
261var boxlock sync.Mutex
262var boxinglock sync.Mutex
263
264func getboxes(ident string) (*Box, error) {
265 boxlock.Lock()
266 b, ok := boxofboxes[ident]
267 boxlock.Unlock()
268 if ok {
269 return b, nil
270 }
271
272 boxinglock.Lock()
273 defer boxinglock.Unlock()
274
275 boxlock.Lock()
276 b, ok = boxofboxes[ident]
277 boxlock.Unlock()
278 if ok {
279 return b, nil
280 }
281
282 var info string
283 row := stmtGetXonker.QueryRow(ident, "boxes")
284 err := row.Scan(&info)
285 if err != nil {
286 j, err := GetJunk(ident)
287 if err != nil {
288 return nil, err
289 }
290 inbox, _ := j.GetString("inbox")
291 outbox, _ := j.GetString("outbox")
292 sbox, _ := j.FindString([]string{"endpoints", "sharedInbox"})
293 b = &Box{In: inbox, Out: outbox, Shared: sbox}
294 if inbox != "" {
295 m := strings.Join([]string{inbox, outbox, sbox}, " ")
296 _, err = stmtSaveXonker.Exec(ident, m, "boxes")
297 if err != nil {
298 log.Printf("error saving boxes: %s", err)
299 }
300 }
301 } else {
302 m := strings.Split(info, " ")
303 b = &Box{In: m[0], Out: m[1], Shared: m[2]}
304 }
305
306 boxlock.Lock()
307 boxofboxes[ident] = b
308 boxlock.Unlock()
309 return b, nil
310}
311
312func gimmexonks(user *WhatAbout, outbox string) {
313 log.Printf("getting outbox: %s", outbox)
314 j, err := GetJunk(outbox)
315 if err != nil {
316 log.Printf("error getting outbox: %s", err)
317 return
318 }
319 t, _ := j.GetString("type")
320 origin := originate(outbox)
321 if t == "OrderedCollection" {
322 items, _ := j.GetArray("orderedItems")
323 if items == nil {
324 obj, ok := j.GetMap("first")
325 if ok {
326 items, _ = obj.GetArray("orderedItems")
327 } else {
328 page1, _ := j.GetString("first")
329 j, err = GetJunk(page1)
330 if err != nil {
331 log.Printf("error gettings page1: %s", err)
332 return
333 }
334 items, _ = j.GetArray("orderedItems")
335 }
336 }
337 if len(items) > 20 {
338 items = items[0:20]
339 }
340 for i, j := 0, len(items)-1; i < j; i, j = i+1, j-1 {
341 items[i], items[j] = items[j], items[i]
342 }
343 for _, item := range items {
344 obj, ok := item.(junk.Junk)
345 if !ok {
346 continue
347 }
348 xonksaver(user, obj, origin)
349 }
350 }
351}
352
353func peeppeep() {
354 user, _ := butwhatabout("htest")
355 honkers := gethonkers(user.ID)
356 for _, f := range honkers {
357 if f.Flavor != "peep" {
358 continue
359 }
360 log.Printf("getting updates: %s", f.XID)
361 box, err := getboxes(f.XID)
362 if err != nil {
363 log.Printf("error getting outbox: %s", err)
364 continue
365 }
366 gimmexonks(user, box.Out)
367 }
368}
369func whosthere(xid string) ([]string, string) {
370 obj, err := GetJunk(xid)
371 if err != nil {
372 log.Printf("error getting remote xonk: %s", err)
373 return nil, ""
374 }
375 convoy, _ := obj.GetString("context")
376 if convoy == "" {
377 convoy, _ = obj.GetString("conversation")
378 }
379 return newphone(nil, obj), convoy
380}
381
382func newphone(a []string, obj junk.Junk) []string {
383 for _, addr := range []string{"to", "cc", "attributedTo"} {
384 who, _ := obj.GetString(addr)
385 if who != "" {
386 a = append(a, who)
387 }
388 whos, _ := obj.GetArray(addr)
389 for _, w := range whos {
390 who, _ := w.(string)
391 if who != "" {
392 a = append(a, who)
393 }
394 }
395 }
396 return a
397}
398
399func extractattrto(obj junk.Junk) string {
400 who, _ := obj.GetString("attributedTo")
401 if who != "" {
402 return who
403 }
404 o, ok := obj.GetMap("attributedTo")
405 if ok {
406 id, ok := o.GetString("id")
407 if ok {
408 return id
409 }
410 }
411 arr, _ := obj.GetArray("attributedTo")
412 for _, a := range arr {
413 o, ok := a.(junk.Junk)
414 if ok {
415 t, _ := o.GetString("type")
416 id, _ := o.GetString("id")
417 if t == "Person" || t == "" {
418 return id
419 }
420 }
421 }
422 return ""
423}
424
425func xonksaver(user *WhatAbout, item junk.Junk, origin string) *Honk {
426 depth := 0
427 maxdepth := 10
428 currenttid := ""
429 goingup := 0
430 var xonkxonkfn func(item junk.Junk, origin string) *Honk
431
432 saveonemore := func(xid string) {
433 log.Printf("getting onemore: %s", xid)
434 if depth >= maxdepth {
435 log.Printf("in too deep")
436 return
437 }
438 obj, err := GetJunkHardMode(xid)
439 if err != nil {
440 log.Printf("error getting onemore: %s: %s", xid, err)
441 return
442 }
443 depth++
444 xonkxonkfn(obj, originate(xid))
445 depth--
446 }
447
448 xonkxonkfn = func(item junk.Junk, origin string) *Honk {
449 // id, _ := item.GetString( "id")
450 what, _ := item.GetString("type")
451 dt, _ := item.GetString("published")
452
453 var err error
454 var xid, rid, url, content, precis, convoy string
455 var replies []string
456 var obj junk.Junk
457 var ok bool
458 isUpdate := false
459 switch what {
460 case "Delete":
461 obj, ok = item.GetMap("object")
462 if ok {
463 xid, _ = obj.GetString("id")
464 } else {
465 xid, _ = item.GetString("object")
466 }
467 if xid == "" {
468 return nil
469 }
470 if originate(xid) != origin {
471 log.Printf("forged delete: %s", xid)
472 return nil
473 }
474 log.Printf("eradicating %s", xid)
475 eradicatexonk(user.ID, xid)
476 return nil
477 case "Tombstone":
478 xid, _ = item.GetString("id")
479 if xid == "" {
480 return nil
481 }
482 if originate(xid) != origin {
483 log.Printf("forged delete: %s", xid)
484 return nil
485 }
486 log.Printf("eradicating %s", xid)
487 eradicatexonk(user.ID, xid)
488 return nil
489 case "Announce":
490 obj, ok = item.GetMap("object")
491 if ok {
492 xid, _ = obj.GetString("id")
493 } else {
494 xid, _ = item.GetString("object")
495 }
496 if !needxonkid(user, xid) {
497 return nil
498 }
499 log.Printf("getting bonk: %s", xid)
500 obj, err = GetJunkHardMode(xid)
501 if err != nil {
502 log.Printf("error getting bonk: %s: %s", xid, err)
503 }
504 origin = originate(xid)
505 what = "bonk"
506 case "Update":
507 isUpdate = true
508 fallthrough
509 case "Create":
510 obj, ok = item.GetMap("object")
511 if !ok {
512 xid, _ = item.GetString("object")
513 log.Printf("getting created honk: %s", xid)
514 obj, err = GetJunkHardMode(xid)
515 if err != nil {
516 log.Printf("error getting creation: %s", err)
517 }
518 }
519 what = "honk"
520 case "Read":
521 xid, ok = item.GetString("object")
522 if ok {
523 if !needxonkid(user, xid) {
524 log.Printf("don't need read obj: %s", xid)
525 return nil
526 }
527 obj, err = GetJunkHardMode(xid)
528 if err != nil {
529 log.Printf("error getting read: %s", err)
530 return nil
531 }
532 return xonkxonkfn(obj, originate(xid))
533 }
534 return nil
535 case "Video":
536 fallthrough
537 case "Question":
538 fallthrough
539 case "Note":
540 fallthrough
541 case "Article":
542 fallthrough
543 case "Page":
544 obj = item
545 what = "honk"
546 case "Event":
547 obj = item
548 what = "event"
549 default:
550 log.Printf("unknown activity: %s", what)
551 fd, _ := os.OpenFile("savedinbox.json", os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
552 item.Write(fd)
553 io.WriteString(fd, "\n")
554 fd.Close()
555 return nil
556 }
557
558 var xonk Honk
559 // early init
560 xonk.UserID = user.ID
561 xonk.Honker, _ = item.GetString("actor")
562 if obj != nil {
563 if xonk.Honker == "" {
564 xonk.Honker = extractattrto(obj)
565 }
566 xonk.Oonker = extractattrto(obj)
567 if xonk.Oonker == xonk.Honker {
568 xonk.Oonker = ""
569 }
570 xonk.Audience = newphone(nil, obj)
571 }
572 xonk.Audience = append(xonk.Audience, xonk.Honker)
573 xonk.Audience = oneofakind(xonk.Audience)
574 for _, a := range xonk.Audience {
575 if a == user.URL {
576 xonk.Whofore = 1
577 }
578 }
579
580 if obj != nil {
581 ot, _ := obj.GetString("type")
582 url, _ = obj.GetString("url")
583 dt2, ok := obj.GetString("published")
584 if ok {
585 dt = dt2
586 }
587 xid, _ = obj.GetString("id")
588 precis, _ = obj.GetString("summary")
589 if precis == "" {
590 precis, _ = obj.GetString("name")
591 }
592 content, _ = obj.GetString("content")
593 if !strings.HasPrefix(content, "<p>") {
594 content = "<p>" + content
595 }
596 sens, _ := obj["sensitive"].(bool)
597 if sens && precis == "" {
598 precis = "unspecified horror"
599 }
600 rid, ok = obj.GetString("inReplyTo")
601 if !ok {
602 robj, ok := obj.GetMap("inReplyTo")
603 if ok {
604 rid, _ = robj.GetString("id")
605 }
606 }
607 convoy, _ = obj.GetString("context")
608 if strings.HasSuffix(convoy, "#context") &&
609 originate(convoy) != originate(xid) {
610 // friendica...
611 convoy = ""
612 }
613 if convoy == "" {
614 convoy, _ = obj.GetString("conversation")
615 }
616 if ot == "Question" {
617 if what == "honk" {
618 what = "qonk"
619 }
620 content += "<ul>"
621 ans, _ := obj.GetArray("oneOf")
622 for _, ai := range ans {
623 a, ok := ai.(junk.Junk)
624 if !ok {
625 continue
626 }
627 as, _ := a.GetString("name")
628 content += "<li>" + as
629 }
630 ans, _ = obj.GetArray("anyOf")
631 for _, ai := range ans {
632 a, ok := ai.(junk.Junk)
633 if !ok {
634 continue
635 }
636 as, _ := a.GetString("name")
637 content += "<li>" + as
638 }
639 content += "</ul>"
640 }
641 if what == "honk" && rid != "" {
642 what = "tonk"
643 }
644 atts, _ := obj.GetArray("attachment")
645 for i, atti := range atts {
646 att, ok := atti.(junk.Junk)
647 if !ok {
648 continue
649 }
650 at, _ := att.GetString("type")
651 mt, _ := att.GetString("mediaType")
652 u, _ := att.GetString("url")
653 name, _ := att.GetString("name")
654 desc, _ := att.GetString("summary")
655 if desc == "" {
656 desc = name
657 }
658 localize := false
659 if i > 4 {
660 log.Printf("excessive attachment: %s", at)
661 } else if at == "Document" || at == "Image" {
662 mt = strings.ToLower(mt)
663 log.Printf("attachment: %s %s", mt, u)
664 if mt == "text/plain" || strings.HasPrefix(mt, "image") {
665 localize = true
666 }
667 } else {
668 log.Printf("unknown attachment: %s", at)
669 }
670 if skipMedia(&xonk) {
671 localize = false
672 }
673 donk := savedonk(u, name, desc, mt, localize)
674 if donk != nil {
675 xonk.Donks = append(xonk.Donks, donk)
676 }
677 }
678 tags, _ := obj.GetArray("tag")
679 for _, tagi := range tags {
680 tag, ok := tagi.(junk.Junk)
681 if !ok {
682 continue
683 }
684 tt, _ := tag.GetString("type")
685 name, _ := tag.GetString("name")
686 desc, _ := tag.GetString("summary")
687 if desc == "" {
688 desc = name
689 }
690 if tt == "Emoji" {
691 icon, _ := tag.GetMap("icon")
692 mt, _ := icon.GetString("mediaType")
693 if mt == "" {
694 mt = "image/png"
695 }
696 u, _ := icon.GetString("url")
697 donk := savedonk(u, name, desc, mt, true)
698 if donk != nil {
699 xonk.Donks = append(xonk.Donks, donk)
700 }
701 }
702 if tt == "Hashtag" {
703 if len(name) > 1 && name[0] == '#' {
704 xonk.Onts = append(xonk.Onts, name)
705 } else {
706 log.Printf("bogus hashtag name: %s", name)
707 }
708 }
709 if tt == "Place" {
710 p := new(Place)
711 p.Name = name
712 p.Latitude, _ = tag["latitude"].(float64)
713 p.Longitude, _ = tag["longitude"].(float64)
714 p.Url, _ = tag.GetString("url")
715 xonk.Place = p
716 }
717 }
718 starttime, ok := obj.GetString("startTime")
719 if ok {
720 start, err := time.Parse(time.RFC3339, starttime)
721 if err == nil {
722 t := new(Time)
723 t.StartTime = start
724 dura, _ := obj.GetString("duration")
725 if strings.HasPrefix(dura, "PT") {
726 dura = strings.ToLower(dura[2:])
727 d, _ := time.ParseDuration(dura)
728 t.Duration = Duration(d)
729 }
730 xonk.Time = t
731 }
732 }
733 loca, ok := obj.GetMap("location")
734 if ok {
735 tt, _ := loca.GetString("type")
736 name, _ := loca.GetString("name")
737 if tt == "Place" {
738 p := new(Place)
739 p.Name = name
740 p.Latitude, _ = loca["latitude"].(float64)
741 p.Longitude, _ = loca["longitude"].(float64)
742 p.Url, _ = loca.GetString("url")
743 xonk.Place = p
744 }
745 }
746
747 xonk.Onts = oneofakind(xonk.Onts)
748 replyobj, ok := obj.GetMap("replies")
749 if ok {
750 items, ok := replyobj.GetArray("items")
751 if !ok {
752 first, ok := replyobj.GetMap("first")
753 if ok {
754 items, _ = first.GetArray("items")
755 }
756 }
757 for _, repl := range items {
758 s, ok := repl.(string)
759 if ok {
760 replies = append(replies, s)
761 }
762 }
763 }
764
765 }
766 if originate(xid) != origin {
767 log.Printf("original sin: %s <> %s", xid, origin)
768 item.Write(os.Stdout)
769 return nil
770 }
771
772 if currenttid == "" {
773 currenttid = convoy
774 }
775
776 if len(content) > 90001 {
777 log.Printf("content too long. truncating")
778 content = content[:90001]
779 }
780
781 // grab any inline imgs
782 imgfilt := htfilter.New()
783 imgfilt.Imager = inlineimgs
784 imgfilt.String(content)
785
786 // init xonk
787 xonk.What = what
788 xonk.XID = xid
789 xonk.RID = rid
790 xonk.Date, _ = time.Parse(time.RFC3339, dt)
791 xonk.URL = url
792 xonk.Noise = content
793 xonk.Precis = precis
794 xonk.Format = "html"
795 xonk.Convoy = convoy
796
797 if isUpdate {
798 log.Printf("something has changed! %s", xonk.XID)
799 prev := getxonk(user.ID, xonk.XID)
800 if prev == nil {
801 log.Printf("didn't find old version for update: %s", xonk.XID)
802 return nil
803 }
804 prev.Noise = xonk.Noise
805 prev.Precis = xonk.Precis
806 prev.Date = xonk.Date
807 prev.Donks = xonk.Donks
808 prev.Onts = xonk.Onts
809 prev.Place = xonk.Place
810 updatehonk(prev)
811 } else if needxonk(user, &xonk) {
812 if rid != "" {
813 if needxonkid(user, rid) {
814 goingup++
815 saveonemore(rid)
816 goingup--
817 }
818 if convoy == "" {
819 xx := getxonk(user.ID, rid)
820 if xx != nil {
821 convoy = xx.Convoy
822 }
823 }
824 }
825 if convoy == "" {
826 convoy = currenttid
827 }
828 if convoy == "" {
829 convoy = "missing-" + xfiltrate()
830 currenttid = convoy
831 }
832 xonk.Convoy = convoy
833 savexonk(&xonk)
834 }
835 if goingup == 0 {
836 for _, replid := range replies {
837 if needxonkid(user, replid) {
838 log.Printf("missing a reply: %s", replid)
839 saveonemore(replid)
840 }
841 }
842 }
843 return &xonk
844 }
845
846 return xonkxonkfn(item, origin)
847}
848
849func rubadubdub(user *WhatAbout, req junk.Junk) {
850 xid, _ := req.GetString("id")
851 actor, _ := req.GetString("actor")
852 j := junk.New()
853 j["@context"] = itiswhatitis
854 j["id"] = user.URL + "/dub/" + url.QueryEscape(xid)
855 j["type"] = "Accept"
856 j["actor"] = user.URL
857 j["to"] = actor
858 j["published"] = time.Now().UTC().Format(time.RFC3339)
859 j["object"] = req
860
861 var buf bytes.Buffer
862 j.Write(&buf)
863 msg := buf.Bytes()
864
865 deliverate(0, user.Name, actor, msg)
866}
867
868func itakeitallback(user *WhatAbout, xid string) {
869 j := junk.New()
870 j["@context"] = itiswhatitis
871 j["id"] = user.URL + "/unsub/" + url.QueryEscape(xid)
872 j["type"] = "Undo"
873 j["actor"] = user.URL
874 j["to"] = xid
875 f := junk.New()
876 f["id"] = user.URL + "/sub/" + url.QueryEscape(xid)
877 f["type"] = "Follow"
878 f["actor"] = user.URL
879 f["to"] = xid
880 f["object"] = xid
881 j["object"] = f
882 j["published"] = time.Now().UTC().Format(time.RFC3339)
883
884 var buf bytes.Buffer
885 j.Write(&buf)
886 msg := buf.Bytes()
887
888 deliverate(0, user.Name, xid, msg)
889}
890
891func subsub(user *WhatAbout, xid string) {
892 j := junk.New()
893 j["@context"] = itiswhatitis
894 j["id"] = user.URL + "/sub/" + url.QueryEscape(xid)
895 j["type"] = "Follow"
896 j["actor"] = user.URL
897 j["to"] = xid
898 j["object"] = xid
899 j["published"] = time.Now().UTC().Format(time.RFC3339)
900
901 var buf bytes.Buffer
902 j.Write(&buf)
903 msg := buf.Bytes()
904
905 deliverate(0, user.Name, xid, msg)
906}
907
908// returns activity, object
909func jonkjonk(user *WhatAbout, h *Honk) (junk.Junk, junk.Junk) {
910 dt := h.Date.Format(time.RFC3339)
911 var jo junk.Junk
912 j := junk.New()
913 j["id"] = user.URL + "/" + h.What + "/" + shortxid(h.XID)
914 j["actor"] = user.URL
915 j["published"] = dt
916 if h.Public {
917 j["to"] = []string{h.Audience[0], user.URL + "/followers"}
918 } else {
919 j["to"] = h.Audience[0]
920 }
921 if len(h.Audience) > 1 {
922 j["cc"] = h.Audience[1:]
923 }
924
925 switch h.What {
926 case "update":
927 fallthrough
928 case "tonk":
929 fallthrough
930 case "event":
931 fallthrough
932 case "honk":
933 j["type"] = "Create"
934 if h.What == "update" {
935 j["type"] = "Update"
936 }
937
938 jo = junk.New()
939 jo["id"] = h.XID
940 jo["type"] = "Note"
941 if h.What == "event" {
942 jo["type"] = "Event"
943 }
944 jo["published"] = dt
945 jo["url"] = h.XID
946 jo["attributedTo"] = user.URL
947 if h.RID != "" {
948 jo["inReplyTo"] = h.RID
949 }
950 if h.Convoy != "" {
951 jo["context"] = h.Convoy
952 jo["conversation"] = h.Convoy
953 }
954 jo["to"] = h.Audience[0]
955 if len(h.Audience) > 1 {
956 jo["cc"] = h.Audience[1:]
957 }
958 if !h.Public {
959 jo["directMessage"] = true
960 }
961 translate(h)
962 h.Noise = re_memes.ReplaceAllString(h.Noise, "")
963 jo["summary"] = h.Precis
964 jo["content"] = ontologize(mentionize(h.Noise))
965 if strings.HasPrefix(h.Precis, "DZ:") {
966 jo["sensitive"] = true
967 }
968
969 var replies []string
970 for _, reply := range h.Replies {
971 replies = append(replies, reply.XID)
972 }
973 if len(replies) > 0 {
974 jr := junk.New()
975 jr["type"] = "Collection"
976 jr["totalItems"] = len(replies)
977 jr["items"] = replies
978 jo["replies"] = jr
979 }
980
981 var tags []junk.Junk
982 g := bunchofgrapes(h.Noise)
983 for _, m := range g {
984 t := junk.New()
985 t["type"] = "Mention"
986 t["name"] = m.who
987 t["href"] = m.where
988 tags = append(tags, t)
989 }
990 for _, o := range h.Onts {
991 t := junk.New()
992 t["type"] = "Hashtag"
993 o = strings.ToLower(o)
994 t["href"] = fmt.Sprintf("https://%s/o/%s", serverName, o[1:])
995 t["name"] = o
996 tags = append(tags, t)
997 }
998 herd := herdofemus(h.Noise)
999 for _, e := range herd {
1000 t := junk.New()
1001 t["id"] = e.ID
1002 t["type"] = "Emoji"
1003 t["name"] = e.Name
1004 i := junk.New()
1005 i["type"] = "Image"
1006 i["mediaType"] = "image/png"
1007 i["url"] = e.ID
1008 t["icon"] = i
1009 tags = append(tags, t)
1010 }
1011 if p := h.Place; p != nil {
1012 t := junk.New()
1013 t["type"] = "Place"
1014 t["name"] = p.Name
1015 t["latitude"] = p.Latitude
1016 t["longitude"] = p.Longitude
1017 t["url"] = p.Url
1018 tags = append(tags, t)
1019 }
1020 if len(tags) > 0 {
1021 jo["tag"] = tags
1022 }
1023 if t := h.Time; t != nil {
1024 jo["startTime"] = t.StartTime.Format(time.RFC3339)
1025 if t.Duration != 0 {
1026 jo["duration"] = "PT" + strings.ToUpper(t.Duration.String())
1027 }
1028 }
1029 var atts []junk.Junk
1030 for _, d := range h.Donks {
1031 if re_emus.MatchString(d.Name) {
1032 continue
1033 }
1034 jd := junk.New()
1035 jd["mediaType"] = d.Media
1036 jd["name"] = d.Name
1037 jd["summary"] = d.Desc
1038 jd["type"] = "Document"
1039 jd["url"] = d.URL
1040 atts = append(atts, jd)
1041 }
1042 if len(atts) > 0 {
1043 jo["attachment"] = atts
1044 }
1045 j["object"] = jo
1046 case "bonk":
1047 j["type"] = "Announce"
1048 if h.Convoy != "" {
1049 j["context"] = h.Convoy
1050 }
1051 j["object"] = h.XID
1052 case "unbonk":
1053 b := junk.New()
1054 b["id"] = user.URL + "/" + "bonk" + "/" + shortxid(h.XID)
1055 b["type"] = "Announce"
1056 b["actor"] = user.URL
1057 if h.Convoy != "" {
1058 b["context"] = h.Convoy
1059 }
1060 b["object"] = h.XID
1061 j["type"] = "Undo"
1062 j["object"] = b
1063 case "zonk":
1064 j["type"] = "Delete"
1065 j["object"] = h.XID
1066 case "ack":
1067 j["type"] = "Read"
1068 j["object"] = h.XID
1069 case "deack":
1070 b := junk.New()
1071 b["id"] = user.URL + "/" + "ack" + "/" + shortxid(h.XID)
1072 b["type"] = "Read"
1073 b["actor"] = user.URL
1074 b["object"] = h.XID
1075 j["type"] = "Undo"
1076 j["object"] = b
1077 }
1078
1079 return j, jo
1080}
1081
1082func honkworldwide(user *WhatAbout, honk *Honk) {
1083 jonk, _ := jonkjonk(user, honk)
1084 jonk["@context"] = itiswhatitis
1085 var buf bytes.Buffer
1086 jonk.Write(&buf)
1087 msg := buf.Bytes()
1088
1089 rcpts := make(map[string]bool)
1090 for _, a := range honk.Audience {
1091 if a == thewholeworld || a == user.URL || strings.HasSuffix(a, "/followers") {
1092 continue
1093 }
1094 box, _ := getboxes(a)
1095 if box != nil && honk.Public && box.Shared != "" {
1096 rcpts["%"+box.Shared] = true
1097 } else {
1098 rcpts[a] = true
1099 }
1100 }
1101 if honk.Public {
1102 for _, f := range getdubs(user.ID) {
1103 if f.XID == user.URL {
1104 continue
1105 }
1106 box, _ := getboxes(f.XID)
1107 if box != nil && box.Shared != "" {
1108 rcpts["%"+box.Shared] = true
1109 } else {
1110 rcpts[f.XID] = true
1111 }
1112 }
1113 }
1114 for a := range rcpts {
1115 go deliverate(0, user.Name, a, msg)
1116 }
1117}
1118
1119func asjonker(user *WhatAbout) junk.Junk {
1120 about := obfusbreak(user.About)
1121
1122 j := junk.New()
1123 j["@context"] = itiswhatitis
1124 j["id"] = user.URL
1125 j["type"] = "Person"
1126 j["inbox"] = user.URL + "/inbox"
1127 j["outbox"] = user.URL + "/outbox"
1128 j["followers"] = user.URL + "/followers"
1129 j["following"] = user.URL + "/following"
1130 j["name"] = user.Display
1131 j["preferredUsername"] = user.Name
1132 j["summary"] = about
1133 j["url"] = user.URL
1134 a := junk.New()
1135 a["type"] = "Image"
1136 a["mediaType"] = "image/png"
1137 a["url"] = fmt.Sprintf("https://%s/a?a=%s", serverName, url.QueryEscape(user.URL))
1138 j["icon"] = a
1139 k := junk.New()
1140 k["id"] = user.URL + "#key"
1141 k["owner"] = user.URL
1142 k["publicKeyPem"] = user.Key
1143 j["publicKey"] = k
1144
1145 return j
1146}
1147
1148var handfull = make(map[string]string)
1149var handlock sync.Mutex
1150
1151func gofish(name string) string {
1152 if name[0] == '@' {
1153 name = name[1:]
1154 }
1155 m := strings.Split(name, "@")
1156 if len(m) != 2 {
1157 log.Printf("bad fish name: %s", name)
1158 return ""
1159 }
1160 handlock.Lock()
1161 ref, ok := handfull[name]
1162 handlock.Unlock()
1163 if ok {
1164 return ref
1165 }
1166 row := stmtGetXonker.QueryRow(name, "fishname")
1167 var href string
1168 err := row.Scan(&href)
1169 if err == nil {
1170 handlock.Lock()
1171 handfull[name] = href
1172 handlock.Unlock()
1173 return href
1174 }
1175 log.Printf("fishing for %s", name)
1176 j, err := GetJunkFast(fmt.Sprintf("https://%s/.well-known/webfinger?resource=acct:%s", m[1], name))
1177 if err != nil {
1178 log.Printf("failed to go fish %s: %s", name, err)
1179 handlock.Lock()
1180 handfull[name] = ""
1181 handlock.Unlock()
1182 return ""
1183 }
1184 links, _ := j.GetArray("links")
1185 for _, li := range links {
1186 l, ok := li.(junk.Junk)
1187 if !ok {
1188 continue
1189 }
1190 href, _ := l.GetString("href")
1191 rel, _ := l.GetString("rel")
1192 t, _ := l.GetString("type")
1193 if rel == "self" && friendorfoe(t) {
1194 _, err := stmtSaveXonker.Exec(name, href, "fishname")
1195 if err != nil {
1196 log.Printf("error saving fishname: %s", err)
1197 }
1198 handlock.Lock()
1199 handfull[name] = href
1200 handlock.Unlock()
1201 return href
1202 }
1203 }
1204 handlock.Lock()
1205 handfull[name] = ""
1206 handlock.Unlock()
1207 return ""
1208}
1209
1210func isactor(t string) bool {
1211 switch t {
1212 case "Person":
1213 case "Organization":
1214 case "Application":
1215 case "Service":
1216 default:
1217 return false
1218 }
1219 return true
1220}
1221
1222func investigate(name string) (*Honker, error) {
1223 if name == "" {
1224 return nil, fmt.Errorf("no name")
1225 }
1226 if name[0] == '@' {
1227 name = gofish(name)
1228 }
1229 if name == "" {
1230 return nil, fmt.Errorf("no name")
1231 }
1232 log.Printf("digging up some info on %s", name)
1233 obj, err := GetJunkFast(name)
1234 if err != nil {
1235 log.Printf("error investigating honker: %s", err)
1236 return nil, err
1237 }
1238 t, _ := obj.GetString("type")
1239 if !isactor(t) {
1240 log.Printf("it's not a person! %s", name)
1241 return nil, err
1242 }
1243 xid, _ := obj.GetString("id")
1244 handle, _ := obj.GetString("preferredUsername")
1245 return &Honker{XID: xid, Handle: handle}, nil
1246}