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 "sync"
33 "time"
34
35 "humungus.tedunangst.com/r/webs/htfilter"
36 "humungus.tedunangst.com/r/webs/httpsig"
37 "humungus.tedunangst.com/r/webs/image"
38 "humungus.tedunangst.com/r/webs/junk"
39)
40
41var theonetruename = `application/ld+json; profile="https://www.w3.org/ns/activitystreams"`
42var thefakename = `application/activity+json`
43var falsenames = []string{
44 `application/ld+json`,
45 `application/activity+json`,
46}
47var itiswhatitis = "https://www.w3.org/ns/activitystreams"
48var thewholeworld = "https://www.w3.org/ns/activitystreams#Public"
49
50func friendorfoe(ct string) bool {
51 ct = strings.ToLower(ct)
52 for _, at := range falsenames {
53 if strings.HasPrefix(ct, at) {
54 return true
55 }
56 }
57 return false
58}
59
60func PostJunk(keyname string, key *rsa.PrivateKey, url string, j junk.Junk) error {
61 var buf bytes.Buffer
62 j.Write(&buf)
63 return PostMsg(keyname, key, url, buf.Bytes())
64}
65
66func PostMsg(keyname string, key *rsa.PrivateKey, url string, msg []byte) error {
67 client := http.DefaultClient
68 req, err := http.NewRequest("POST", url, bytes.NewReader(msg))
69 if err != nil {
70 return err
71 }
72 req.Header.Set("User-Agent", "honksnonk/5.0; "+serverName)
73 req.Header.Set("Content-Type", theonetruename)
74 httpsig.SignRequest(keyname, key, req, msg)
75 resp, err := client.Do(req)
76 if err != nil {
77 return err
78 }
79 resp.Body.Close()
80 switch resp.StatusCode {
81 case 200:
82 case 201:
83 case 202:
84 default:
85 return fmt.Errorf("http post status: %d", resp.StatusCode)
86 }
87 log.Printf("successful post: %s %d", url, resp.StatusCode)
88 return nil
89}
90
91func GetJunk(url string) (junk.Junk, error) {
92 return GetJunkTimeout(url, 30*time.Second)
93}
94
95func GetJunkFast(url string) (junk.Junk, error) {
96 return GetJunkTimeout(url, 5*time.Second)
97}
98
99func GetJunkHardMode(url string) (junk.Junk, error) {
100 j, err := GetJunk(url)
101 if err != nil {
102 emsg := err.Error()
103 if emsg == "http get status: 502" || strings.Contains(emsg, "timeout") {
104 log.Printf("trying again after error: %s", emsg)
105 time.Sleep(time.Duration(60+notrand.Int63n(60)) * time.Second)
106 j, err = GetJunk(url)
107 if err != nil {
108 log.Printf("still couldn't get it")
109 } else {
110 log.Printf("retry success!")
111 }
112 }
113 }
114 return j, err
115}
116
117func GetJunkTimeout(url string, timeout time.Duration) (junk.Junk, error) {
118 at := thefakename
119 if strings.Contains(url, ".well-known/webfinger?resource") {
120 at = "application/jrd+json"
121 }
122 return junk.Get(url, junk.GetArgs{
123 Accept: at,
124 Agent: "honksnonk/5.0; " + serverName,
125 Timeout: timeout,
126 })
127}
128
129func savedonk(url string, name, desc, media string, localize bool) *Donk {
130 if url == "" {
131 return nil
132 }
133 donk := finddonk(url)
134 if donk != nil {
135 return donk
136 }
137 donk = new(Donk)
138 log.Printf("saving donk: %s", url)
139 xid := xfiltrate()
140 data := []byte{}
141 if localize {
142 resp, err := http.Get(url)
143 if err != nil {
144 log.Printf("error fetching %s: %s", url, err)
145 localize = false
146 goto saveit
147 }
148 defer resp.Body.Close()
149 if resp.StatusCode != 200 {
150 localize = false
151 goto saveit
152 }
153 var buf bytes.Buffer
154 limiter := io.LimitReader(resp.Body, 10*1024*1024)
155 io.Copy(&buf, limiter)
156
157 data = buf.Bytes()
158 if len(data) == 10*1024*1024 {
159 log.Printf("truncation likely")
160 }
161 if strings.HasPrefix(media, "image") {
162 img, err := image.Vacuum(&buf,
163 image.Params{LimitSize: 4200 * 4200, MaxWidth: 2048, MaxHeight: 2048})
164 if err != nil {
165 log.Printf("unable to decode image: %s", err)
166 localize = false
167 data = []byte{}
168 goto saveit
169 }
170 data = img.Data
171 format := img.Format
172 media = "image/" + format
173 if format == "jpeg" {
174 format = "jpg"
175 }
176 xid = xid + "." + format
177 } else if len(data) > 100000 {
178 log.Printf("not saving large attachment")
179 localize = false
180 data = []byte{}
181 }
182 }
183saveit:
184 fileid, err := savefile(xid, name, desc, url, media, localize, data)
185 if err != nil {
186 log.Printf("error saving file %s: %s", url, err)
187 return nil
188 }
189 donk.FileID = fileid
190 donk.XID = xid
191 return donk
192}
193
194func iszonked(userid int64, xid string) bool {
195 row := stmtFindZonk.QueryRow(userid, xid)
196 var id int64
197 err := row.Scan(&id)
198 if err == nil {
199 return true
200 }
201 if err != sql.ErrNoRows {
202 log.Printf("err querying zonk: %s", err)
203 }
204 return false
205}
206
207func needxonk(user *WhatAbout, x *Honk) bool {
208 if rejectxonk(x) {
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 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 if obj != nil {
559 _, ok := obj.GetString("diaspora:guid")
560 if ok {
561 log.Printf("looks like friendica")
562 // friendica does the silliest bonks
563 c, ok := item.FindString([]string{"source", "content"})
564 if ok {
565 log.Printf("got content")
566 re_link := regexp.MustCompile(`link='([^']*)'`)
567 m := re_link.FindStringSubmatch(c)
568 if len(m) > 1 {
569 xid := m[1]
570 log.Printf("getting friendica flavored bonk: %s", xid)
571 if !needxonkid(user, xid) {
572 return nil
573 }
574 newobj, err := GetJunkHardMode(xid)
575 if err != nil {
576 log.Printf("error getting bonk: %s: %s", xid, err)
577 } else {
578 obj = newobj
579 origin = originate(xid)
580 what = "bonk"
581 }
582 } else {
583 log.Printf("can't find link")
584 }
585 } else {
586 log.Printf("no source content")
587 }
588 }
589 }
590
591 var xonk Honk
592 // early init
593 xonk.UserID = user.ID
594 xonk.Honker, _ = item.GetString("actor")
595 if xonk.Honker == "" {
596 xonk.Honker, _ = item.GetString("attributedTo")
597 }
598 if obj != nil {
599 if xonk.Honker == "" {
600 xonk.Honker = extractattrto(obj)
601 }
602 xonk.Oonker = extractattrto(obj)
603 if xonk.Oonker == xonk.Honker {
604 xonk.Oonker = ""
605 }
606 xonk.Audience = newphone(nil, obj)
607 }
608 xonk.Audience = append(xonk.Audience, xonk.Honker)
609 xonk.Audience = oneofakind(xonk.Audience)
610 for _, a := range xonk.Audience {
611 if a == user.URL {
612 xonk.Whofore = 1
613 }
614 }
615
616 if obj != nil {
617 ot, _ := obj.GetString("type")
618 url, _ = obj.GetString("url")
619 dt2, ok := obj.GetString("published")
620 if ok {
621 dt = dt2
622 }
623 xid, _ = obj.GetString("id")
624 precis, _ = obj.GetString("summary")
625 if precis == "" {
626 precis, _ = obj.GetString("name")
627 }
628 content, _ = obj.GetString("content")
629 if !strings.HasPrefix(content, "<p>") {
630 content = "<p>" + content
631 }
632 sens, _ := obj["sensitive"].(bool)
633 if sens && precis == "" {
634 precis = "unspecified horror"
635 }
636 rid, ok = obj.GetString("inReplyTo")
637 if !ok {
638 robj, ok := obj.GetMap("inReplyTo")
639 if ok {
640 rid, _ = robj.GetString("id")
641 }
642 }
643 convoy, _ = obj.GetString("context")
644 if strings.HasSuffix(convoy, "#context") &&
645 originate(convoy) != originate(xid) {
646 // friendica...
647 convoy = ""
648 }
649 if convoy == "" {
650 convoy, _ = obj.GetString("conversation")
651 }
652 if ot == "Question" {
653 if what == "honk" {
654 what = "qonk"
655 }
656 content += "<ul>"
657 ans, _ := obj.GetArray("oneOf")
658 for _, ai := range ans {
659 a, ok := ai.(junk.Junk)
660 if !ok {
661 continue
662 }
663 as, _ := a.GetString("name")
664 content += "<li>" + as
665 }
666 ans, _ = obj.GetArray("anyOf")
667 for _, ai := range ans {
668 a, ok := ai.(junk.Junk)
669 if !ok {
670 continue
671 }
672 as, _ := a.GetString("name")
673 content += "<li>" + as
674 }
675 content += "</ul>"
676 }
677 if what == "honk" && rid != "" {
678 what = "tonk"
679 }
680 atts, _ := obj.GetArray("attachment")
681 for i, atti := range atts {
682 att, ok := atti.(junk.Junk)
683 if !ok {
684 continue
685 }
686 at, _ := att.GetString("type")
687 mt, _ := att.GetString("mediaType")
688 u, _ := att.GetString("url")
689 name, _ := att.GetString("name")
690 desc, _ := att.GetString("summary")
691 if desc == "" {
692 desc = name
693 }
694 localize := false
695 if i > 4 {
696 log.Printf("excessive attachment: %s", at)
697 } else if at == "Document" || at == "Image" {
698 mt = strings.ToLower(mt)
699 log.Printf("attachment: %s %s", mt, u)
700 if mt == "text/plain" || strings.HasPrefix(mt, "image") {
701 localize = true
702 }
703 } else {
704 log.Printf("unknown attachment: %s", at)
705 }
706 if skipMedia(&xonk) {
707 localize = false
708 }
709 donk := savedonk(u, name, desc, mt, localize)
710 if donk != nil {
711 xonk.Donks = append(xonk.Donks, donk)
712 }
713 }
714 tags, _ := obj.GetArray("tag")
715 for _, tagi := range tags {
716 tag, ok := tagi.(junk.Junk)
717 if !ok {
718 continue
719 }
720 tt, _ := tag.GetString("type")
721 name, _ := tag.GetString("name")
722 desc, _ := tag.GetString("summary")
723 if desc == "" {
724 desc = name
725 }
726 if tt == "Emoji" {
727 icon, _ := tag.GetMap("icon")
728 mt, _ := icon.GetString("mediaType")
729 if mt == "" {
730 mt = "image/png"
731 }
732 u, _ := icon.GetString("url")
733 donk := savedonk(u, name, desc, mt, true)
734 if donk != nil {
735 xonk.Donks = append(xonk.Donks, donk)
736 }
737 }
738 if tt == "Hashtag" {
739 if len(name) > 1 && name[0] == '#' {
740 xonk.Onts = append(xonk.Onts, name)
741 } else {
742 log.Printf("bogus hashtag name: %s", name)
743 }
744 }
745 if tt == "Place" {
746 p := new(Place)
747 p.Name = name
748 p.Latitude, _ = tag["latitude"].(float64)
749 p.Longitude, _ = tag["longitude"].(float64)
750 p.Url, _ = tag.GetString("url")
751 xonk.Place = p
752 }
753 }
754 starttime, ok := obj.GetString("startTime")
755 if ok {
756 start, err := time.Parse(time.RFC3339, starttime)
757 if err == nil {
758 t := new(Time)
759 t.StartTime = start
760 endtime, _ := obj.GetString("endTime")
761 t.EndTime, _ = time.Parse(time.RFC3339, endtime)
762 dura, _ := obj.GetString("duration")
763 if strings.HasPrefix(dura, "PT") {
764 dura = strings.ToLower(dura[2:])
765 d, _ := time.ParseDuration(dura)
766 t.Duration = Duration(d)
767 }
768 xonk.Time = t
769 }
770 }
771 loca, ok := obj.GetMap("location")
772 if ok {
773 tt, _ := loca.GetString("type")
774 name, _ := loca.GetString("name")
775 if tt == "Place" {
776 p := new(Place)
777 p.Name = name
778 p.Latitude, _ = loca["latitude"].(float64)
779 p.Longitude, _ = loca["longitude"].(float64)
780 p.Url, _ = loca.GetString("url")
781 xonk.Place = p
782 }
783 }
784
785 xonk.Onts = oneofakind(xonk.Onts)
786 replyobj, ok := obj.GetMap("replies")
787 if ok {
788 items, ok := replyobj.GetArray("items")
789 if !ok {
790 first, ok := replyobj.GetMap("first")
791 if ok {
792 items, _ = first.GetArray("items")
793 }
794 }
795 for _, repl := range items {
796 s, ok := repl.(string)
797 if ok {
798 replies = append(replies, s)
799 }
800 }
801 }
802
803 }
804 if originate(xid) != origin {
805 log.Printf("original sin: %s <> %s", xid, origin)
806 item.Write(os.Stdout)
807 return nil
808 }
809
810 if currenttid == "" {
811 currenttid = convoy
812 }
813
814 if len(content) > 90001 {
815 log.Printf("content too long. truncating")
816 content = content[:90001]
817 }
818
819 // grab any inline imgs
820 imgfilt := htfilter.New()
821 imgfilt.Imager = inlineimgs
822 imgfilt.String(content)
823
824 // init xonk
825 xonk.What = what
826 xonk.XID = xid
827 xonk.RID = rid
828 xonk.Date, _ = time.Parse(time.RFC3339, dt)
829 xonk.URL = url
830 xonk.Noise = content
831 xonk.Precis = precis
832 xonk.Format = "html"
833 xonk.Convoy = convoy
834
835 if isUpdate {
836 log.Printf("something has changed! %s", xonk.XID)
837 prev := getxonk(user.ID, xonk.XID)
838 if prev == nil {
839 log.Printf("didn't find old version for update: %s", xonk.XID)
840 return nil
841 }
842 prev.Noise = xonk.Noise
843 prev.Precis = xonk.Precis
844 prev.Date = xonk.Date
845 prev.Donks = xonk.Donks
846 prev.Onts = xonk.Onts
847 prev.Place = xonk.Place
848 updatehonk(prev)
849 } else if needxonk(user, &xonk) {
850 if rid != "" {
851 if needxonkid(user, rid) {
852 goingup++
853 saveonemore(rid)
854 goingup--
855 }
856 if convoy == "" {
857 xx := getxonk(user.ID, rid)
858 if xx != nil {
859 convoy = xx.Convoy
860 }
861 }
862 }
863 if convoy == "" {
864 convoy = currenttid
865 }
866 if convoy == "" {
867 convoy = "missing-" + xfiltrate()
868 currenttid = convoy
869 }
870 xonk.Convoy = convoy
871 savexonk(&xonk)
872 }
873 if goingup == 0 {
874 for _, replid := range replies {
875 if needxonkid(user, replid) {
876 log.Printf("missing a reply: %s", replid)
877 saveonemore(replid)
878 }
879 }
880 }
881 return &xonk
882 }
883
884 return xonkxonkfn(item, origin)
885}
886
887func rubadubdub(user *WhatAbout, req junk.Junk) {
888 xid, _ := req.GetString("id")
889 actor, _ := req.GetString("actor")
890 j := junk.New()
891 j["@context"] = itiswhatitis
892 j["id"] = user.URL + "/dub/" + url.QueryEscape(xid)
893 j["type"] = "Accept"
894 j["actor"] = user.URL
895 j["to"] = actor
896 j["published"] = time.Now().UTC().Format(time.RFC3339)
897 j["object"] = req
898
899 var buf bytes.Buffer
900 j.Write(&buf)
901 msg := buf.Bytes()
902
903 deliverate(0, user.Name, actor, msg)
904}
905
906func itakeitallback(user *WhatAbout, xid string) {
907 j := junk.New()
908 j["@context"] = itiswhatitis
909 j["id"] = user.URL + "/unsub/" + url.QueryEscape(xid)
910 j["type"] = "Undo"
911 j["actor"] = user.URL
912 j["to"] = xid
913 f := junk.New()
914 f["id"] = user.URL + "/sub/" + url.QueryEscape(xid)
915 f["type"] = "Follow"
916 f["actor"] = user.URL
917 f["to"] = xid
918 f["object"] = xid
919 j["object"] = f
920 j["published"] = time.Now().UTC().Format(time.RFC3339)
921
922 var buf bytes.Buffer
923 j.Write(&buf)
924 msg := buf.Bytes()
925
926 deliverate(0, user.Name, xid, msg)
927}
928
929func subsub(user *WhatAbout, xid string) {
930 if xid == "" {
931 log.Printf("can't subscribe to empty")
932 return
933 }
934 j := junk.New()
935 j["@context"] = itiswhatitis
936 j["id"] = user.URL + "/sub/" + url.QueryEscape(xid)
937 j["type"] = "Follow"
938 j["actor"] = user.URL
939 j["to"] = xid
940 j["object"] = xid
941 j["published"] = time.Now().UTC().Format(time.RFC3339)
942
943 var buf bytes.Buffer
944 j.Write(&buf)
945 msg := buf.Bytes()
946
947 deliverate(0, user.Name, xid, msg)
948}
949
950// returns activity, object
951func jonkjonk(user *WhatAbout, h *Honk) (junk.Junk, junk.Junk) {
952 dt := h.Date.Format(time.RFC3339)
953 var jo junk.Junk
954 j := junk.New()
955 j["id"] = user.URL + "/" + h.What + "/" + shortxid(h.XID)
956 j["actor"] = user.URL
957 j["published"] = dt
958 if h.Public {
959 j["to"] = []string{h.Audience[0], user.URL + "/followers"}
960 } else {
961 j["to"] = h.Audience[0]
962 }
963 if len(h.Audience) > 1 {
964 j["cc"] = h.Audience[1:]
965 }
966
967 switch h.What {
968 case "update":
969 fallthrough
970 case "tonk":
971 fallthrough
972 case "event":
973 fallthrough
974 case "honk":
975 j["type"] = "Create"
976 if h.What == "update" {
977 j["type"] = "Update"
978 }
979
980 jo = junk.New()
981 jo["id"] = h.XID
982 jo["type"] = "Note"
983 if h.What == "event" {
984 jo["type"] = "Event"
985 }
986 jo["published"] = dt
987 jo["url"] = h.XID
988 jo["attributedTo"] = user.URL
989 if h.RID != "" {
990 jo["inReplyTo"] = h.RID
991 }
992 if h.Convoy != "" {
993 jo["context"] = h.Convoy
994 jo["conversation"] = h.Convoy
995 }
996 jo["to"] = h.Audience[0]
997 if len(h.Audience) > 1 {
998 jo["cc"] = h.Audience[1:]
999 }
1000 if !h.Public {
1001 jo["directMessage"] = true
1002 }
1003 translate(h)
1004 h.Noise = re_memes.ReplaceAllString(h.Noise, "")
1005 jo["summary"] = html.EscapeString(h.Precis)
1006 jo["content"] = ontologize(mentionize(h.Noise))
1007 if strings.HasPrefix(h.Precis, "DZ:") {
1008 jo["sensitive"] = true
1009 }
1010
1011 var replies []string
1012 for _, reply := range h.Replies {
1013 replies = append(replies, reply.XID)
1014 }
1015 if len(replies) > 0 {
1016 jr := junk.New()
1017 jr["type"] = "Collection"
1018 jr["totalItems"] = len(replies)
1019 jr["items"] = replies
1020 jo["replies"] = jr
1021 }
1022
1023 var tags []junk.Junk
1024 g := bunchofgrapes(h.Noise)
1025 for _, m := range g {
1026 t := junk.New()
1027 t["type"] = "Mention"
1028 t["name"] = m.who
1029 t["href"] = m.where
1030 tags = append(tags, t)
1031 }
1032 for _, o := range h.Onts {
1033 t := junk.New()
1034 t["type"] = "Hashtag"
1035 o = strings.ToLower(o)
1036 t["href"] = fmt.Sprintf("https://%s/o/%s", serverName, o[1:])
1037 t["name"] = o
1038 tags = append(tags, t)
1039 }
1040 herd := herdofemus(h.Noise)
1041 for _, e := range herd {
1042 t := junk.New()
1043 t["id"] = e.ID
1044 t["type"] = "Emoji"
1045 t["name"] = e.Name
1046 i := junk.New()
1047 i["type"] = "Image"
1048 i["mediaType"] = "image/png"
1049 i["url"] = e.ID
1050 t["icon"] = i
1051 tags = append(tags, t)
1052 }
1053 if p := h.Place; p != nil {
1054 t := junk.New()
1055 t["type"] = "Place"
1056 t["name"] = p.Name
1057 t["latitude"] = p.Latitude
1058 t["longitude"] = p.Longitude
1059 t["url"] = p.Url
1060 if h.What == "event" {
1061 jo["location"] = t
1062 } else {
1063 tags = append(tags, t)
1064 }
1065 }
1066 if len(tags) > 0 {
1067 jo["tag"] = tags
1068 }
1069 if t := h.Time; t != nil {
1070 jo["startTime"] = t.StartTime.Format(time.RFC3339)
1071 if t.Duration != 0 {
1072 jo["duration"] = "PT" + strings.ToUpper(t.Duration.String())
1073 }
1074 }
1075 var atts []junk.Junk
1076 for _, d := range h.Donks {
1077 if re_emus.MatchString(d.Name) {
1078 continue
1079 }
1080 jd := junk.New()
1081 jd["mediaType"] = d.Media
1082 jd["name"] = d.Name
1083 jd["summary"] = html.EscapeString(d.Desc)
1084 jd["type"] = "Document"
1085 jd["url"] = d.URL
1086 atts = append(atts, jd)
1087 }
1088 if len(atts) > 0 {
1089 jo["attachment"] = atts
1090 }
1091 j["object"] = jo
1092 case "bonk":
1093 j["type"] = "Announce"
1094 if h.Convoy != "" {
1095 j["context"] = h.Convoy
1096 }
1097 j["object"] = h.XID
1098 case "unbonk":
1099 b := junk.New()
1100 b["id"] = user.URL + "/" + "bonk" + "/" + shortxid(h.XID)
1101 b["type"] = "Announce"
1102 b["actor"] = user.URL
1103 if h.Convoy != "" {
1104 b["context"] = h.Convoy
1105 }
1106 b["object"] = h.XID
1107 j["type"] = "Undo"
1108 j["object"] = b
1109 case "zonk":
1110 j["type"] = "Delete"
1111 j["object"] = h.XID
1112 case "ack":
1113 j["type"] = "Read"
1114 j["object"] = h.XID
1115 case "deack":
1116 b := junk.New()
1117 b["id"] = user.URL + "/" + "ack" + "/" + shortxid(h.XID)
1118 b["type"] = "Read"
1119 b["actor"] = user.URL
1120 b["object"] = h.XID
1121 j["type"] = "Undo"
1122 j["object"] = b
1123 }
1124
1125 return j, jo
1126}
1127
1128func honkworldwide(user *WhatAbout, honk *Honk) {
1129 jonk, _ := jonkjonk(user, honk)
1130 jonk["@context"] = itiswhatitis
1131 var buf bytes.Buffer
1132 jonk.Write(&buf)
1133 msg := buf.Bytes()
1134
1135 rcpts := make(map[string]bool)
1136 for _, a := range honk.Audience {
1137 if a == thewholeworld || a == user.URL || strings.HasSuffix(a, "/followers") {
1138 continue
1139 }
1140 box, _ := getboxes(a)
1141 if box != nil && honk.Public && box.Shared != "" {
1142 rcpts["%"+box.Shared] = true
1143 } else {
1144 rcpts[a] = true
1145 }
1146 }
1147 if honk.Public {
1148 for _, f := range getdubs(user.ID) {
1149 if f.XID == user.URL {
1150 continue
1151 }
1152 box, _ := getboxes(f.XID)
1153 if box != nil && box.Shared != "" {
1154 rcpts["%"+box.Shared] = true
1155 } else {
1156 rcpts[f.XID] = true
1157 }
1158 }
1159 }
1160 for a := range rcpts {
1161 go deliverate(0, user.Name, a, msg)
1162 }
1163}
1164
1165func asjonker(user *WhatAbout) junk.Junk {
1166 about := markitzero(user.About)
1167
1168 j := junk.New()
1169 j["@context"] = itiswhatitis
1170 j["id"] = user.URL
1171 j["type"] = "Person"
1172 j["inbox"] = user.URL + "/inbox"
1173 j["outbox"] = user.URL + "/outbox"
1174 j["followers"] = user.URL + "/followers"
1175 j["following"] = user.URL + "/following"
1176 j["name"] = user.Display
1177 j["preferredUsername"] = user.Name
1178 j["summary"] = about
1179 j["url"] = user.URL
1180 a := junk.New()
1181 a["type"] = "Image"
1182 a["mediaType"] = "image/png"
1183 a["url"] = fmt.Sprintf("https://%s/a?a=%s", serverName, url.QueryEscape(user.URL))
1184 j["icon"] = a
1185 k := junk.New()
1186 k["id"] = user.URL + "#key"
1187 k["owner"] = user.URL
1188 k["publicKeyPem"] = user.Key
1189 j["publicKey"] = k
1190
1191 return j
1192}
1193
1194var handfull = make(map[string]string)
1195var handlock sync.Mutex
1196
1197func gofish(name string) string {
1198 if name[0] == '@' {
1199 name = name[1:]
1200 }
1201 m := strings.Split(name, "@")
1202 if len(m) != 2 {
1203 log.Printf("bad fish name: %s", name)
1204 return ""
1205 }
1206 handlock.Lock()
1207 ref, ok := handfull[name]
1208 handlock.Unlock()
1209 if ok {
1210 return ref
1211 }
1212 row := stmtGetXonker.QueryRow(name, "fishname")
1213 var href string
1214 err := row.Scan(&href)
1215 if err == nil {
1216 handlock.Lock()
1217 handfull[name] = href
1218 handlock.Unlock()
1219 return href
1220 }
1221 log.Printf("fishing for %s", name)
1222 j, err := GetJunkFast(fmt.Sprintf("https://%s/.well-known/webfinger?resource=acct:%s", m[1], name))
1223 if err != nil {
1224 log.Printf("failed to go fish %s: %s", name, err)
1225 handlock.Lock()
1226 handfull[name] = ""
1227 handlock.Unlock()
1228 return ""
1229 }
1230 links, _ := j.GetArray("links")
1231 for _, li := range links {
1232 l, ok := li.(junk.Junk)
1233 if !ok {
1234 continue
1235 }
1236 href, _ := l.GetString("href")
1237 rel, _ := l.GetString("rel")
1238 t, _ := l.GetString("type")
1239 if rel == "self" && friendorfoe(t) {
1240 _, err := stmtSaveXonker.Exec(name, href, "fishname")
1241 if err != nil {
1242 log.Printf("error saving fishname: %s", err)
1243 }
1244 handlock.Lock()
1245 handfull[name] = href
1246 handlock.Unlock()
1247 return href
1248 }
1249 }
1250 handlock.Lock()
1251 handfull[name] = ""
1252 handlock.Unlock()
1253 return ""
1254}
1255
1256func isactor(t string) bool {
1257 switch t {
1258 case "Person":
1259 case "Organization":
1260 case "Application":
1261 case "Service":
1262 default:
1263 return false
1264 }
1265 return true
1266}
1267
1268func investigate(name string) (*Honker, error) {
1269 if name == "" {
1270 return nil, fmt.Errorf("no name")
1271 }
1272 if name[0] == '@' {
1273 name = gofish(name)
1274 }
1275 if name == "" {
1276 return nil, fmt.Errorf("no name")
1277 }
1278 log.Printf("digging up some info on %s", name)
1279 obj, err := GetJunkFast(name)
1280 if err != nil {
1281 log.Printf("error investigating honker: %s", err)
1282 return nil, err
1283 }
1284 t, _ := obj.GetString("type")
1285 if !isactor(t) {
1286 log.Printf("it's not a person! %s", name)
1287 return nil, err
1288 }
1289 xid, _ := obj.GetString("id")
1290 handle, _ := obj.GetString("preferredUsername")
1291 return &Honker{XID: xid, Handle: handle}, nil
1292}