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 "regexp"
30 "strings"
31 "sync"
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("err querying zonk: %s", err)
202 }
203 return false
204}
205
206func needxonk(user *WhatAbout, x *Honk) bool {
207 if rejectxonk(x) {
208 log.Printf("not saving thumb biter? %s via %s", x.XID, x.Honker)
209 return false
210 }
211 return needxonkid(user, x.XID)
212}
213func needxonkid(user *WhatAbout, xid string) bool {
214 if strings.HasPrefix(xid, user.URL+"/") {
215 return false
216 }
217 if rejectorigin(user.ID, xid) {
218 log.Printf("don't need thumb biter? %s", xid)
219 return false
220 }
221 if iszonked(user.ID, xid) {
222 log.Printf("already zonked: %s", xid)
223 return false
224 }
225 row := stmtFindXonk.QueryRow(user.ID, xid)
226 var id int64
227 err := row.Scan(&id)
228 if err == nil {
229 return false
230 }
231 if err != sql.ErrNoRows {
232 log.Printf("err querying xonk: %s", err)
233 }
234 return true
235}
236
237func eradicatexonk(userid int64, xid string) {
238 xonk := getxonk(userid, xid)
239 if xonk != nil {
240 deletehonk(xonk.ID)
241 }
242 _, err := stmtSaveZonker.Exec(userid, xid, "zonk")
243 if err != nil {
244 log.Printf("error eradicating: %s", err)
245 }
246}
247
248func savexonk(x *Honk) {
249 log.Printf("saving xonk: %s", x.XID)
250 go prehandle(x.Honker)
251 go prehandle(x.Oonker)
252 savehonk(x)
253}
254
255type Box struct {
256 In string
257 Out string
258 Shared string
259}
260
261var boxofboxes = make(map[string]*Box)
262var boxlock sync.Mutex
263var boxinglock sync.Mutex
264
265func getboxes(ident string) (*Box, error) {
266 boxlock.Lock()
267 b, ok := boxofboxes[ident]
268 boxlock.Unlock()
269 if ok {
270 return b, nil
271 }
272
273 boxinglock.Lock()
274 defer boxinglock.Unlock()
275
276 boxlock.Lock()
277 b, ok = boxofboxes[ident]
278 boxlock.Unlock()
279 if ok {
280 return b, nil
281 }
282
283 var info string
284 row := stmtGetXonker.QueryRow(ident, "boxes")
285 err := row.Scan(&info)
286 if err != nil {
287 j, err := GetJunk(ident)
288 if err != nil {
289 return nil, err
290 }
291 inbox, _ := j.GetString("inbox")
292 outbox, _ := j.GetString("outbox")
293 sbox, _ := j.FindString([]string{"endpoints", "sharedInbox"})
294 b = &Box{In: inbox, Out: outbox, Shared: sbox}
295 if inbox != "" {
296 m := strings.Join([]string{inbox, outbox, sbox}, " ")
297 _, err = stmtSaveXonker.Exec(ident, m, "boxes")
298 if err != nil {
299 log.Printf("error saving boxes: %s", err)
300 }
301 }
302 } else {
303 m := strings.Split(info, " ")
304 b = &Box{In: m[0], Out: m[1], Shared: m[2]}
305 }
306
307 boxlock.Lock()
308 boxofboxes[ident] = b
309 boxlock.Unlock()
310 return b, nil
311}
312
313func gimmexonks(user *WhatAbout, outbox string) {
314 log.Printf("getting outbox: %s", outbox)
315 j, err := GetJunk(outbox)
316 if err != nil {
317 log.Printf("error getting outbox: %s", err)
318 return
319 }
320 t, _ := j.GetString("type")
321 origin := originate(outbox)
322 if t == "OrderedCollection" {
323 items, _ := j.GetArray("orderedItems")
324 if items == nil {
325 obj, ok := j.GetMap("first")
326 if ok {
327 items, _ = obj.GetArray("orderedItems")
328 } else {
329 page1, _ := j.GetString("first")
330 j, err = GetJunk(page1)
331 if err != nil {
332 log.Printf("error gettings page1: %s", err)
333 return
334 }
335 items, _ = j.GetArray("orderedItems")
336 }
337 }
338 if len(items) > 20 {
339 items = items[0:20]
340 }
341 for i, j := 0, len(items)-1; i < j; i, j = i+1, j-1 {
342 items[i], items[j] = items[j], items[i]
343 }
344 for _, item := range items {
345 obj, ok := item.(junk.Junk)
346 if !ok {
347 continue
348 }
349 xonksaver(user, obj, origin)
350 }
351 }
352}
353
354func peeppeep() {
355 user, _ := butwhatabout("htest")
356 honkers := gethonkers(user.ID)
357 for _, f := range honkers {
358 if f.Flavor != "peep" {
359 continue
360 }
361 log.Printf("getting updates: %s", f.XID)
362 box, err := getboxes(f.XID)
363 if err != nil {
364 log.Printf("error getting outbox: %s", err)
365 continue
366 }
367 gimmexonks(user, box.Out)
368 }
369}
370func whosthere(xid string) ([]string, string) {
371 obj, err := GetJunk(xid)
372 if err != nil {
373 log.Printf("error getting remote xonk: %s", err)
374 return nil, ""
375 }
376 convoy, _ := obj.GetString("context")
377 if convoy == "" {
378 convoy, _ = obj.GetString("conversation")
379 }
380 return newphone(nil, obj), convoy
381}
382
383func newphone(a []string, obj junk.Junk) []string {
384 for _, addr := range []string{"to", "cc", "attributedTo"} {
385 who, _ := obj.GetString(addr)
386 if who != "" {
387 a = append(a, who)
388 }
389 whos, _ := obj.GetArray(addr)
390 for _, w := range whos {
391 who, _ := w.(string)
392 if who != "" {
393 a = append(a, who)
394 }
395 }
396 }
397 return a
398}
399
400func extractattrto(obj junk.Junk) string {
401 who, _ := obj.GetString("attributedTo")
402 if who != "" {
403 return who
404 }
405 o, ok := obj.GetMap("attributedTo")
406 if ok {
407 id, ok := o.GetString("id")
408 if ok {
409 return id
410 }
411 }
412 arr, _ := obj.GetArray("attributedTo")
413 for _, a := range arr {
414 o, ok := a.(junk.Junk)
415 if ok {
416 t, _ := o.GetString("type")
417 id, _ := o.GetString("id")
418 if t == "Person" || t == "" {
419 return id
420 }
421 }
422 }
423 return ""
424}
425
426func xonksaver(user *WhatAbout, item junk.Junk, origin string) *Honk {
427 depth := 0
428 maxdepth := 10
429 currenttid := ""
430 goingup := 0
431 var xonkxonkfn func(item junk.Junk, origin string) *Honk
432
433 saveonemore := func(xid string) {
434 log.Printf("getting onemore: %s", xid)
435 if depth >= maxdepth {
436 log.Printf("in too deep")
437 return
438 }
439 obj, err := GetJunkHardMode(xid)
440 if err != nil {
441 log.Printf("error getting onemore: %s: %s", xid, err)
442 return
443 }
444 depth++
445 xonkxonkfn(obj, originate(xid))
446 depth--
447 }
448
449 xonkxonkfn = func(item junk.Junk, origin string) *Honk {
450 // id, _ := item.GetString( "id")
451 what, _ := item.GetString("type")
452 dt, _ := item.GetString("published")
453
454 var err error
455 var xid, rid, url, content, precis, convoy string
456 var replies []string
457 var obj junk.Junk
458 var ok bool
459 isUpdate := false
460 switch what {
461 case "Delete":
462 obj, ok = item.GetMap("object")
463 if ok {
464 xid, _ = obj.GetString("id")
465 } else {
466 xid, _ = item.GetString("object")
467 }
468 if xid == "" {
469 return nil
470 }
471 if originate(xid) != origin {
472 log.Printf("forged delete: %s", xid)
473 return nil
474 }
475 log.Printf("eradicating %s", xid)
476 eradicatexonk(user.ID, xid)
477 return nil
478 case "Tombstone":
479 xid, _ = item.GetString("id")
480 if xid == "" {
481 return nil
482 }
483 if originate(xid) != origin {
484 log.Printf("forged delete: %s", xid)
485 return nil
486 }
487 log.Printf("eradicating %s", xid)
488 eradicatexonk(user.ID, xid)
489 return nil
490 case "Announce":
491 obj, ok = item.GetMap("object")
492 if ok {
493 xid, _ = obj.GetString("id")
494 } else {
495 xid, _ = item.GetString("object")
496 }
497 if !needxonkid(user, xid) {
498 return nil
499 }
500 log.Printf("getting bonk: %s", xid)
501 obj, err = GetJunkHardMode(xid)
502 if err != nil {
503 log.Printf("error getting bonk: %s: %s", xid, err)
504 }
505 origin = originate(xid)
506 what = "bonk"
507 case "Update":
508 isUpdate = true
509 fallthrough
510 case "Create":
511 obj, ok = item.GetMap("object")
512 if !ok {
513 xid, _ = item.GetString("object")
514 log.Printf("getting created honk: %s", xid)
515 obj, err = GetJunkHardMode(xid)
516 if err != nil {
517 log.Printf("error getting creation: %s", err)
518 }
519 }
520 what = "honk"
521 case "Read":
522 xid, ok = item.GetString("object")
523 if ok {
524 if !needxonkid(user, xid) {
525 log.Printf("don't need read obj: %s", xid)
526 return nil
527 }
528 obj, err = GetJunkHardMode(xid)
529 if err != nil {
530 log.Printf("error getting read: %s", err)
531 return nil
532 }
533 return xonkxonkfn(obj, originate(xid))
534 }
535 return nil
536 case "Video":
537 fallthrough
538 case "Question":
539 fallthrough
540 case "Note":
541 fallthrough
542 case "Article":
543 fallthrough
544 case "Page":
545 obj = item
546 what = "honk"
547 case "Event":
548 obj = item
549 what = "event"
550 default:
551 log.Printf("unknown activity: %s", what)
552 fd, _ := os.OpenFile("savedinbox.json", os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
553 item.Write(fd)
554 io.WriteString(fd, "\n")
555 fd.Close()
556 return nil
557 }
558
559 if obj != nil {
560 _, ok := obj.GetString("diaspora:guid")
561 if ok {
562 // frienda does the silliest bonks
563 c, ok := item.FindString([]string{"source", "content"})
564 if ok {
565 re_link := regexp.MustCompile(`link='([^']*)'`)
566 m := re_link.FindStringSubmatch(c)
567 if len(m) > 1 {
568 xid := m[1]
569 log.Printf("getting friendica flavored bonk: %s", xid)
570 if !needxonkid(user, xid) {
571 return nil
572 }
573 newobj, err := GetJunkHardMode(xid)
574 if err != nil {
575 log.Printf("error getting bonk: %s: %s", xid, err)
576 } else {
577 obj = newobj
578 origin = originate(xid)
579 what = "bonk"
580 }
581 }
582 }
583 }
584 }
585 var xonk Honk
586 // early init
587 xonk.UserID = user.ID
588 xonk.Honker, _ = item.GetString("actor")
589 if xonk.Honker == "" {
590 xonk.Honker, _ = item.GetString("attributedTo")
591 }
592 if obj != nil {
593 if xonk.Honker == "" {
594 xonk.Honker = extractattrto(obj)
595 }
596 xonk.Oonker = extractattrto(obj)
597 if xonk.Oonker == xonk.Honker {
598 xonk.Oonker = ""
599 }
600 xonk.Audience = newphone(nil, obj)
601 }
602 xonk.Audience = append(xonk.Audience, xonk.Honker)
603 xonk.Audience = oneofakind(xonk.Audience)
604 for _, a := range xonk.Audience {
605 if a == user.URL {
606 xonk.Whofore = 1
607 }
608 }
609
610 if obj != nil {
611 ot, _ := obj.GetString("type")
612 url, _ = obj.GetString("url")
613 dt2, ok := obj.GetString("published")
614 if ok {
615 dt = dt2
616 }
617 xid, _ = obj.GetString("id")
618 precis, _ = obj.GetString("summary")
619 if precis == "" {
620 precis, _ = obj.GetString("name")
621 }
622 content, _ = obj.GetString("content")
623 if !strings.HasPrefix(content, "<p>") {
624 content = "<p>" + content
625 }
626 sens, _ := obj["sensitive"].(bool)
627 if sens && precis == "" {
628 precis = "unspecified horror"
629 }
630 rid, ok = obj.GetString("inReplyTo")
631 if !ok {
632 robj, ok := obj.GetMap("inReplyTo")
633 if ok {
634 rid, _ = robj.GetString("id")
635 }
636 }
637 convoy, _ = obj.GetString("context")
638 if strings.HasSuffix(convoy, "#context") &&
639 originate(convoy) != originate(xid) {
640 // friendica...
641 convoy = ""
642 }
643 if convoy == "" {
644 convoy, _ = obj.GetString("conversation")
645 }
646 if ot == "Question" {
647 if what == "honk" {
648 what = "qonk"
649 }
650 content += "<ul>"
651 ans, _ := obj.GetArray("oneOf")
652 for _, ai := range ans {
653 a, ok := ai.(junk.Junk)
654 if !ok {
655 continue
656 }
657 as, _ := a.GetString("name")
658 content += "<li>" + as
659 }
660 ans, _ = obj.GetArray("anyOf")
661 for _, ai := range ans {
662 a, ok := ai.(junk.Junk)
663 if !ok {
664 continue
665 }
666 as, _ := a.GetString("name")
667 content += "<li>" + as
668 }
669 content += "</ul>"
670 }
671 if what == "honk" && rid != "" {
672 what = "tonk"
673 }
674 atts, _ := obj.GetArray("attachment")
675 for i, atti := range atts {
676 att, ok := atti.(junk.Junk)
677 if !ok {
678 continue
679 }
680 at, _ := att.GetString("type")
681 mt, _ := att.GetString("mediaType")
682 u, _ := att.GetString("url")
683 name, _ := att.GetString("name")
684 desc, _ := att.GetString("summary")
685 if desc == "" {
686 desc = name
687 }
688 localize := false
689 if i > 4 {
690 log.Printf("excessive attachment: %s", at)
691 } else if at == "Document" || at == "Image" {
692 mt = strings.ToLower(mt)
693 log.Printf("attachment: %s %s", mt, u)
694 if mt == "text/plain" || strings.HasPrefix(mt, "image") {
695 localize = true
696 }
697 } else {
698 log.Printf("unknown attachment: %s", at)
699 }
700 if skipMedia(&xonk) {
701 localize = false
702 }
703 donk := savedonk(u, name, desc, mt, localize)
704 if donk != nil {
705 xonk.Donks = append(xonk.Donks, donk)
706 }
707 }
708 tags, _ := obj.GetArray("tag")
709 for _, tagi := range tags {
710 tag, ok := tagi.(junk.Junk)
711 if !ok {
712 continue
713 }
714 tt, _ := tag.GetString("type")
715 name, _ := tag.GetString("name")
716 desc, _ := tag.GetString("summary")
717 if desc == "" {
718 desc = name
719 }
720 if tt == "Emoji" {
721 icon, _ := tag.GetMap("icon")
722 mt, _ := icon.GetString("mediaType")
723 if mt == "" {
724 mt = "image/png"
725 }
726 u, _ := icon.GetString("url")
727 donk := savedonk(u, name, desc, mt, true)
728 if donk != nil {
729 xonk.Donks = append(xonk.Donks, donk)
730 }
731 }
732 if tt == "Hashtag" {
733 if len(name) > 1 && name[0] == '#' {
734 xonk.Onts = append(xonk.Onts, name)
735 } else {
736 log.Printf("bogus hashtag name: %s", name)
737 }
738 }
739 if tt == "Place" {
740 p := new(Place)
741 p.Name = name
742 p.Latitude, _ = tag["latitude"].(float64)
743 p.Longitude, _ = tag["longitude"].(float64)
744 p.Url, _ = tag.GetString("url")
745 xonk.Place = p
746 }
747 }
748 starttime, ok := obj.GetString("startTime")
749 if ok {
750 start, err := time.Parse(time.RFC3339, starttime)
751 if err == nil {
752 t := new(Time)
753 t.StartTime = start
754 dura, _ := obj.GetString("duration")
755 if strings.HasPrefix(dura, "PT") {
756 dura = strings.ToLower(dura[2:])
757 d, _ := time.ParseDuration(dura)
758 t.Duration = Duration(d)
759 }
760 xonk.Time = t
761 }
762 }
763 loca, ok := obj.GetMap("location")
764 if ok {
765 tt, _ := loca.GetString("type")
766 name, _ := loca.GetString("name")
767 if tt == "Place" {
768 p := new(Place)
769 p.Name = name
770 p.Latitude, _ = loca["latitude"].(float64)
771 p.Longitude, _ = loca["longitude"].(float64)
772 p.Url, _ = loca.GetString("url")
773 xonk.Place = p
774 }
775 }
776
777 xonk.Onts = oneofakind(xonk.Onts)
778 replyobj, ok := obj.GetMap("replies")
779 if ok {
780 items, ok := replyobj.GetArray("items")
781 if !ok {
782 first, ok := replyobj.GetMap("first")
783 if ok {
784 items, _ = first.GetArray("items")
785 }
786 }
787 for _, repl := range items {
788 s, ok := repl.(string)
789 if ok {
790 replies = append(replies, s)
791 }
792 }
793 }
794
795 }
796 if originate(xid) != origin {
797 log.Printf("original sin: %s <> %s", xid, origin)
798 item.Write(os.Stdout)
799 return nil
800 }
801
802 if currenttid == "" {
803 currenttid = convoy
804 }
805
806 if len(content) > 90001 {
807 log.Printf("content too long. truncating")
808 content = content[:90001]
809 }
810
811 // grab any inline imgs
812 imgfilt := htfilter.New()
813 imgfilt.Imager = inlineimgs
814 imgfilt.String(content)
815
816 // init xonk
817 xonk.What = what
818 xonk.XID = xid
819 xonk.RID = rid
820 xonk.Date, _ = time.Parse(time.RFC3339, dt)
821 xonk.URL = url
822 xonk.Noise = content
823 xonk.Precis = precis
824 xonk.Format = "html"
825 xonk.Convoy = convoy
826
827 if isUpdate {
828 log.Printf("something has changed! %s", xonk.XID)
829 prev := getxonk(user.ID, xonk.XID)
830 if prev == nil {
831 log.Printf("didn't find old version for update: %s", xonk.XID)
832 return nil
833 }
834 prev.Noise = xonk.Noise
835 prev.Precis = xonk.Precis
836 prev.Date = xonk.Date
837 prev.Donks = xonk.Donks
838 prev.Onts = xonk.Onts
839 prev.Place = xonk.Place
840 updatehonk(prev)
841 } else if needxonk(user, &xonk) {
842 if rid != "" {
843 if needxonkid(user, rid) {
844 goingup++
845 saveonemore(rid)
846 goingup--
847 }
848 if convoy == "" {
849 xx := getxonk(user.ID, rid)
850 if xx != nil {
851 convoy = xx.Convoy
852 }
853 }
854 }
855 if convoy == "" {
856 convoy = currenttid
857 }
858 if convoy == "" {
859 convoy = "missing-" + xfiltrate()
860 currenttid = convoy
861 }
862 xonk.Convoy = convoy
863 savexonk(&xonk)
864 }
865 if goingup == 0 {
866 for _, replid := range replies {
867 if needxonkid(user, replid) {
868 log.Printf("missing a reply: %s", replid)
869 saveonemore(replid)
870 }
871 }
872 }
873 return &xonk
874 }
875
876 return xonkxonkfn(item, origin)
877}
878
879func rubadubdub(user *WhatAbout, req junk.Junk) {
880 xid, _ := req.GetString("id")
881 actor, _ := req.GetString("actor")
882 j := junk.New()
883 j["@context"] = itiswhatitis
884 j["id"] = user.URL + "/dub/" + url.QueryEscape(xid)
885 j["type"] = "Accept"
886 j["actor"] = user.URL
887 j["to"] = actor
888 j["published"] = time.Now().UTC().Format(time.RFC3339)
889 j["object"] = req
890
891 var buf bytes.Buffer
892 j.Write(&buf)
893 msg := buf.Bytes()
894
895 deliverate(0, user.Name, actor, msg)
896}
897
898func itakeitallback(user *WhatAbout, xid string) {
899 j := junk.New()
900 j["@context"] = itiswhatitis
901 j["id"] = user.URL + "/unsub/" + url.QueryEscape(xid)
902 j["type"] = "Undo"
903 j["actor"] = user.URL
904 j["to"] = xid
905 f := junk.New()
906 f["id"] = user.URL + "/sub/" + url.QueryEscape(xid)
907 f["type"] = "Follow"
908 f["actor"] = user.URL
909 f["to"] = xid
910 f["object"] = xid
911 j["object"] = f
912 j["published"] = time.Now().UTC().Format(time.RFC3339)
913
914 var buf bytes.Buffer
915 j.Write(&buf)
916 msg := buf.Bytes()
917
918 deliverate(0, user.Name, xid, msg)
919}
920
921func subsub(user *WhatAbout, xid string) {
922 j := junk.New()
923 j["@context"] = itiswhatitis
924 j["id"] = user.URL + "/sub/" + url.QueryEscape(xid)
925 j["type"] = "Follow"
926 j["actor"] = user.URL
927 j["to"] = xid
928 j["object"] = xid
929 j["published"] = time.Now().UTC().Format(time.RFC3339)
930
931 var buf bytes.Buffer
932 j.Write(&buf)
933 msg := buf.Bytes()
934
935 deliverate(0, user.Name, xid, msg)
936}
937
938// returns activity, object
939func jonkjonk(user *WhatAbout, h *Honk) (junk.Junk, junk.Junk) {
940 dt := h.Date.Format(time.RFC3339)
941 var jo junk.Junk
942 j := junk.New()
943 j["id"] = user.URL + "/" + h.What + "/" + shortxid(h.XID)
944 j["actor"] = user.URL
945 j["published"] = dt
946 if h.Public {
947 j["to"] = []string{h.Audience[0], user.URL + "/followers"}
948 } else {
949 j["to"] = h.Audience[0]
950 }
951 if len(h.Audience) > 1 {
952 j["cc"] = h.Audience[1:]
953 }
954
955 switch h.What {
956 case "update":
957 fallthrough
958 case "tonk":
959 fallthrough
960 case "event":
961 fallthrough
962 case "honk":
963 j["type"] = "Create"
964 if h.What == "update" {
965 j["type"] = "Update"
966 }
967
968 jo = junk.New()
969 jo["id"] = h.XID
970 jo["type"] = "Note"
971 if h.What == "event" {
972 jo["type"] = "Event"
973 }
974 jo["published"] = dt
975 jo["url"] = h.XID
976 jo["attributedTo"] = user.URL
977 if h.RID != "" {
978 jo["inReplyTo"] = h.RID
979 }
980 if h.Convoy != "" {
981 jo["context"] = h.Convoy
982 jo["conversation"] = h.Convoy
983 }
984 jo["to"] = h.Audience[0]
985 if len(h.Audience) > 1 {
986 jo["cc"] = h.Audience[1:]
987 }
988 if !h.Public {
989 jo["directMessage"] = true
990 }
991 translate(h)
992 h.Noise = re_memes.ReplaceAllString(h.Noise, "")
993 jo["summary"] = h.Precis
994 jo["content"] = ontologize(mentionize(h.Noise))
995 if strings.HasPrefix(h.Precis, "DZ:") {
996 jo["sensitive"] = true
997 }
998
999 var replies []string
1000 for _, reply := range h.Replies {
1001 replies = append(replies, reply.XID)
1002 }
1003 if len(replies) > 0 {
1004 jr := junk.New()
1005 jr["type"] = "Collection"
1006 jr["totalItems"] = len(replies)
1007 jr["items"] = replies
1008 jo["replies"] = jr
1009 }
1010
1011 var tags []junk.Junk
1012 g := bunchofgrapes(h.Noise)
1013 for _, m := range g {
1014 t := junk.New()
1015 t["type"] = "Mention"
1016 t["name"] = m.who
1017 t["href"] = m.where
1018 tags = append(tags, t)
1019 }
1020 for _, o := range h.Onts {
1021 t := junk.New()
1022 t["type"] = "Hashtag"
1023 o = strings.ToLower(o)
1024 t["href"] = fmt.Sprintf("https://%s/o/%s", serverName, o[1:])
1025 t["name"] = o
1026 tags = append(tags, t)
1027 }
1028 herd := herdofemus(h.Noise)
1029 for _, e := range herd {
1030 t := junk.New()
1031 t["id"] = e.ID
1032 t["type"] = "Emoji"
1033 t["name"] = e.Name
1034 i := junk.New()
1035 i["type"] = "Image"
1036 i["mediaType"] = "image/png"
1037 i["url"] = e.ID
1038 t["icon"] = i
1039 tags = append(tags, t)
1040 }
1041 if p := h.Place; p != nil {
1042 t := junk.New()
1043 t["type"] = "Place"
1044 t["name"] = p.Name
1045 t["latitude"] = p.Latitude
1046 t["longitude"] = p.Longitude
1047 t["url"] = p.Url
1048 tags = append(tags, t)
1049 }
1050 if len(tags) > 0 {
1051 jo["tag"] = tags
1052 }
1053 if t := h.Time; t != nil {
1054 jo["startTime"] = t.StartTime.Format(time.RFC3339)
1055 if t.Duration != 0 {
1056 jo["duration"] = "PT" + strings.ToUpper(t.Duration.String())
1057 }
1058 }
1059 var atts []junk.Junk
1060 for _, d := range h.Donks {
1061 if re_emus.MatchString(d.Name) {
1062 continue
1063 }
1064 jd := junk.New()
1065 jd["mediaType"] = d.Media
1066 jd["name"] = d.Name
1067 jd["summary"] = d.Desc
1068 jd["type"] = "Document"
1069 jd["url"] = d.URL
1070 atts = append(atts, jd)
1071 }
1072 if len(atts) > 0 {
1073 jo["attachment"] = atts
1074 }
1075 j["object"] = jo
1076 case "bonk":
1077 j["type"] = "Announce"
1078 if h.Convoy != "" {
1079 j["context"] = h.Convoy
1080 }
1081 j["object"] = h.XID
1082 case "unbonk":
1083 b := junk.New()
1084 b["id"] = user.URL + "/" + "bonk" + "/" + shortxid(h.XID)
1085 b["type"] = "Announce"
1086 b["actor"] = user.URL
1087 if h.Convoy != "" {
1088 b["context"] = h.Convoy
1089 }
1090 b["object"] = h.XID
1091 j["type"] = "Undo"
1092 j["object"] = b
1093 case "zonk":
1094 j["type"] = "Delete"
1095 j["object"] = h.XID
1096 case "ack":
1097 j["type"] = "Read"
1098 j["object"] = h.XID
1099 case "deack":
1100 b := junk.New()
1101 b["id"] = user.URL + "/" + "ack" + "/" + shortxid(h.XID)
1102 b["type"] = "Read"
1103 b["actor"] = user.URL
1104 b["object"] = h.XID
1105 j["type"] = "Undo"
1106 j["object"] = b
1107 }
1108
1109 return j, jo
1110}
1111
1112func honkworldwide(user *WhatAbout, honk *Honk) {
1113 jonk, _ := jonkjonk(user, honk)
1114 jonk["@context"] = itiswhatitis
1115 var buf bytes.Buffer
1116 jonk.Write(&buf)
1117 msg := buf.Bytes()
1118
1119 rcpts := make(map[string]bool)
1120 for _, a := range honk.Audience {
1121 if a == thewholeworld || a == user.URL || strings.HasSuffix(a, "/followers") {
1122 continue
1123 }
1124 box, _ := getboxes(a)
1125 if box != nil && honk.Public && box.Shared != "" {
1126 rcpts["%"+box.Shared] = true
1127 } else {
1128 rcpts[a] = true
1129 }
1130 }
1131 if honk.Public {
1132 for _, f := range getdubs(user.ID) {
1133 if f.XID == user.URL {
1134 continue
1135 }
1136 box, _ := getboxes(f.XID)
1137 if box != nil && box.Shared != "" {
1138 rcpts["%"+box.Shared] = true
1139 } else {
1140 rcpts[f.XID] = true
1141 }
1142 }
1143 }
1144 for a := range rcpts {
1145 go deliverate(0, user.Name, a, msg)
1146 }
1147}
1148
1149func asjonker(user *WhatAbout) junk.Junk {
1150 about := obfusbreak(user.About)
1151
1152 j := junk.New()
1153 j["@context"] = itiswhatitis
1154 j["id"] = user.URL
1155 j["type"] = "Person"
1156 j["inbox"] = user.URL + "/inbox"
1157 j["outbox"] = user.URL + "/outbox"
1158 j["followers"] = user.URL + "/followers"
1159 j["following"] = user.URL + "/following"
1160 j["name"] = user.Display
1161 j["preferredUsername"] = user.Name
1162 j["summary"] = about
1163 j["url"] = user.URL
1164 a := junk.New()
1165 a["type"] = "Image"
1166 a["mediaType"] = "image/png"
1167 a["url"] = fmt.Sprintf("https://%s/a?a=%s", serverName, url.QueryEscape(user.URL))
1168 j["icon"] = a
1169 k := junk.New()
1170 k["id"] = user.URL + "#key"
1171 k["owner"] = user.URL
1172 k["publicKeyPem"] = user.Key
1173 j["publicKey"] = k
1174
1175 return j
1176}
1177
1178var handfull = make(map[string]string)
1179var handlock sync.Mutex
1180
1181func gofish(name string) string {
1182 if name[0] == '@' {
1183 name = name[1:]
1184 }
1185 m := strings.Split(name, "@")
1186 if len(m) != 2 {
1187 log.Printf("bad fish name: %s", name)
1188 return ""
1189 }
1190 handlock.Lock()
1191 ref, ok := handfull[name]
1192 handlock.Unlock()
1193 if ok {
1194 return ref
1195 }
1196 row := stmtGetXonker.QueryRow(name, "fishname")
1197 var href string
1198 err := row.Scan(&href)
1199 if err == nil {
1200 handlock.Lock()
1201 handfull[name] = href
1202 handlock.Unlock()
1203 return href
1204 }
1205 log.Printf("fishing for %s", name)
1206 j, err := GetJunkFast(fmt.Sprintf("https://%s/.well-known/webfinger?resource=acct:%s", m[1], name))
1207 if err != nil {
1208 log.Printf("failed to go fish %s: %s", name, err)
1209 handlock.Lock()
1210 handfull[name] = ""
1211 handlock.Unlock()
1212 return ""
1213 }
1214 links, _ := j.GetArray("links")
1215 for _, li := range links {
1216 l, ok := li.(junk.Junk)
1217 if !ok {
1218 continue
1219 }
1220 href, _ := l.GetString("href")
1221 rel, _ := l.GetString("rel")
1222 t, _ := l.GetString("type")
1223 if rel == "self" && friendorfoe(t) {
1224 _, err := stmtSaveXonker.Exec(name, href, "fishname")
1225 if err != nil {
1226 log.Printf("error saving fishname: %s", err)
1227 }
1228 handlock.Lock()
1229 handfull[name] = href
1230 handlock.Unlock()
1231 return href
1232 }
1233 }
1234 handlock.Lock()
1235 handfull[name] = ""
1236 handlock.Unlock()
1237 return ""
1238}
1239
1240func isactor(t string) bool {
1241 switch t {
1242 case "Person":
1243 case "Organization":
1244 case "Application":
1245 case "Service":
1246 default:
1247 return false
1248 }
1249 return true
1250}
1251
1252func investigate(name string) (*Honker, error) {
1253 if name == "" {
1254 return nil, fmt.Errorf("no name")
1255 }
1256 if name[0] == '@' {
1257 name = gofish(name)
1258 }
1259 if name == "" {
1260 return nil, fmt.Errorf("no name")
1261 }
1262 log.Printf("digging up some info on %s", name)
1263 obj, err := GetJunkFast(name)
1264 if err != nil {
1265 log.Printf("error investigating honker: %s", err)
1266 return nil, err
1267 }
1268 t, _ := obj.GetString("type")
1269 if !isactor(t) {
1270 log.Printf("it's not a person! %s", name)
1271 return nil, err
1272 }
1273 xid, _ := obj.GetString("id")
1274 handle, _ := obj.GetString("preferredUsername")
1275 return &Honker{XID: xid, Handle: handle}, nil
1276}