fun.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 "crypto/rand"
20 "crypto/rsa"
21 "fmt"
22 "html/template"
23 "log"
24 "net/http"
25 "os"
26 "regexp"
27 "strings"
28 "sync"
29
30 "golang.org/x/net/html"
31 "humungus.tedunangst.com/r/webs/htfilter"
32 "humungus.tedunangst.com/r/webs/httpsig"
33)
34
35func reverbolate(userid int64, honks []*Honk) {
36 filt := htfilter.New()
37 filt.Imager = replaceimg
38 zilences := getzilences(userid)
39 for _, h := range honks {
40 h.What += "ed"
41 if h.What == "tonked" {
42 h.What = "honked back"
43 h.Style = "subtle"
44 }
45 if !h.Public {
46 h.Style += " limited"
47 }
48 translate(h)
49 if h.Whofore == 2 || h.Whofore == 3 {
50 h.URL = h.XID
51 if h.What != "bonked" {
52 h.Noise = re_memes.ReplaceAllString(h.Noise, "")
53 h.Noise = mentionize(h.Noise)
54 h.Noise = ontologize(h.Noise)
55 }
56 h.Username, h.Handle = handles(h.Honker)
57 } else {
58 _, h.Handle = handles(h.Honker)
59 h.Username = h.Handle
60 if len(h.Username) > 20 {
61 h.Username = h.Username[:20] + ".."
62 }
63 if h.URL == "" {
64 h.URL = h.XID
65 }
66 }
67 if h.Oonker != "" {
68 _, h.Oondle = handles(h.Oonker)
69 }
70 zap := make(map[*Donk]bool)
71 h.Precis = unpucker(h.Precis)
72 h.Noise = unpucker(h.Noise)
73 h.Open = "open"
74 if userid == -1 {
75 if h.Precis != "" {
76 h.Open = ""
77 }
78 } else {
79 if badword := unsee(zilences, h.Precis, h.Noise, h.Donks); badword != "" {
80 if h.Precis == "" {
81 h.Precis = badword
82 }
83 h.Open = ""
84 } else if h.Precis == "unspecified horror" {
85 h.Precis = ""
86 }
87 }
88 h.HTPrecis, _ = filt.String(h.Precis)
89 h.HTML, _ = filt.String(h.Noise)
90 emuxifier := func(e string) string {
91 for _, d := range h.Donks {
92 if d.Name == e {
93 zap[d] = true
94 if d.Local {
95 return fmt.Sprintf(`<img class="emu" title="%s" src="/d/%s">`, d.Name, d.XID)
96 }
97 }
98 }
99 return e
100 }
101 h.HTPrecis = template.HTML(re_emus.ReplaceAllStringFunc(string(h.HTPrecis), emuxifier))
102 h.HTML = template.HTML(re_emus.ReplaceAllStringFunc(string(h.HTML), emuxifier))
103 j := 0
104 for i := 0; i < len(h.Donks); i++ {
105 if !zap[h.Donks[i]] {
106 h.Donks[j] = h.Donks[i]
107 j++
108 }
109 }
110 h.Donks = h.Donks[:j]
111 }
112}
113
114func replaceimg(node *html.Node) string {
115 src := htfilter.GetAttr(node, "src")
116 alt := htfilter.GetAttr(node, "alt")
117 //title := GetAttr(node, "title")
118 if htfilter.HasClass(node, "Emoji") && alt != "" {
119 return alt
120 }
121 alt = html.EscapeString(alt)
122 src = html.EscapeString(src)
123 d := finddonk(src)
124 if d != nil {
125 src = fmt.Sprintf("https://%s/d/%s", serverName, d.XID)
126 return fmt.Sprintf(`<img alt="%s" title="%s" src="%s">`, alt, alt, src)
127 }
128 return fmt.Sprintf(`<img alt="%s" src="<a href="%s">%s<a>">`, alt, src, src)
129}
130
131func inlineimgs(node *html.Node) string {
132 src := htfilter.GetAttr(node, "src")
133 alt := htfilter.GetAttr(node, "alt")
134 //title := GetAttr(node, "title")
135 if htfilter.HasClass(node, "Emoji") && alt != "" {
136 return alt
137 }
138 alt = html.EscapeString(alt)
139 src = html.EscapeString(src)
140 if !strings.HasPrefix(src, "https://"+serverName+"/") {
141 d := savedonk(src, "image", alt, "image", true)
142 if d != nil {
143 src = fmt.Sprintf("https://%s/d/%s", serverName, d.XID)
144 }
145 }
146 log.Printf("inline img with src: %s", src)
147 return fmt.Sprintf(`<img alt="%s" title="%s" src="%s>`, alt, alt, src)
148}
149
150func translate(honk *Honk) {
151 if honk.Format == "html" {
152 return
153 }
154 noise := honk.Noise
155 if strings.HasPrefix(noise, "DZ:") {
156 idx := strings.Index(noise, "\n")
157 if idx == -1 {
158 honk.Precis = noise
159 noise = ""
160 } else {
161 honk.Precis = noise[:idx]
162 noise = noise[idx+1:]
163 }
164 }
165 honk.Precis = strings.TrimSpace(honk.Precis)
166
167 noise = strings.TrimSpace(noise)
168 noise = quickrename(noise, honk.UserID)
169 noise = obfusbreak(noise)
170
171 honk.Noise = noise
172 honk.Onts = oneofakind(ontologies(honk.Noise))
173}
174
175func unsee(zilences []*regexp.Regexp, precis string, noise string, donks []*Donk) string {
176 for _, z := range zilences {
177 if z.MatchString(precis) || z.MatchString(noise) {
178 if precis == "" {
179 w := z.String()
180 return w[6 : len(w)-3]
181 }
182 return precis
183 }
184 for _, d := range donks {
185 if z.MatchString(d.Desc) {
186 if precis == "" {
187 w := z.String()
188 return w[6 : len(w)-3]
189 }
190 return precis
191 }
192 }
193 }
194 return ""
195}
196
197func osmosis(honks []*Honk, userid int64) []*Honk {
198 zords := getzords(userid)
199 j := 0
200outer:
201 for _, h := range honks {
202 for _, z := range zords {
203 if z.MatchString(h.Precis) || z.MatchString(h.Noise) {
204 continue outer
205 }
206 for _, d := range h.Donks {
207 if z.MatchString(d.Desc) {
208 continue outer
209 }
210 }
211 }
212 honks[j] = h
213 j++
214 }
215 honks = honks[0:j]
216 return honks
217}
218
219func shortxid(xid string) string {
220 idx := strings.LastIndexByte(xid, '/')
221 if idx == -1 {
222 return xid
223 }
224 return xid[idx+1:]
225}
226
227func xfiltrate() string {
228 letters := "BCDFGHJKLMNPQRSTVWXYZbcdfghjklmnpqrstvwxyz1234567891234567891234"
229 var b [18]byte
230 rand.Read(b[:])
231 for i, c := range b {
232 b[i] = letters[c&63]
233 }
234 s := string(b[:])
235 return s
236}
237
238var re_hashes = regexp.MustCompile(`(?:^| )#[[:alnum:]][[:alnum:]_-]*`)
239
240func ontologies(s string) []string {
241 m := re_hashes.FindAllString(s, -1)
242 j := 0
243 for _, h := range m {
244 if h[0] == '&' {
245 continue
246 }
247 if h[0] != '#' {
248 h = h[1:]
249 }
250 m[j] = h
251 j++
252 }
253 return m[:j]
254}
255
256type Mention struct {
257 who string
258 where string
259}
260
261var re_mentions = regexp.MustCompile(`@[[:alnum:]._-]+@[[:alnum:].-]*[[:alnum:]]`)
262var re_urltions = regexp.MustCompile(`@https://\S+`)
263
264func grapevine(s string) []string {
265 var mentions []string
266 m := re_mentions.FindAllString(s, -1)
267 for i := range m {
268 where := gofish(m[i])
269 if where != "" {
270 mentions = append(mentions, where)
271 }
272 }
273 m = re_urltions.FindAllString(s, -1)
274 for i := range m {
275 mentions = append(mentions, m[i][1:])
276 }
277 return mentions
278}
279
280func bunchofgrapes(s string) []Mention {
281 m := re_mentions.FindAllString(s, -1)
282 var mentions []Mention
283 for i := range m {
284 where := gofish(m[i])
285 if where != "" {
286 mentions = append(mentions, Mention{who: m[i], where: where})
287 }
288 }
289 m = re_urltions.FindAllString(s, -1)
290 for i := range m {
291 mentions = append(mentions, Mention{who: m[i][1:], where: m[i][1:]})
292 }
293 return mentions
294}
295
296type Emu struct {
297 ID string
298 Name string
299}
300
301var re_link = regexp.MustCompile(`@?https?://[^\s"]+[\w/)]`)
302var re_emus = regexp.MustCompile(`:[[:alnum:]_-]+:`)
303
304func herdofemus(noise string) []Emu {
305 m := re_emus.FindAllString(noise, -1)
306 m = oneofakind(m)
307 var emus []Emu
308 for _, e := range m {
309 fname := e[1 : len(e)-1]
310 _, err := os.Stat("emus/" + fname + ".png")
311 if err != nil {
312 continue
313 }
314 url := fmt.Sprintf("https://%s/emu/%s.png", serverName, fname)
315 emus = append(emus, Emu{ID: url, Name: e})
316 }
317 return emus
318}
319
320var re_memes = regexp.MustCompile("meme: ?([[:alnum:]_.-]+)")
321
322func memetize(honk *Honk) {
323 repl := func(x string) string {
324 name := x[5:]
325 if name[0] == ' ' {
326 name = name[1:]
327 }
328 fd, err := os.Open("memes/" + name)
329 if err != nil {
330 log.Printf("no meme for %s", name)
331 return x
332 }
333 var peek [512]byte
334 n, _ := fd.Read(peek[:])
335 ct := http.DetectContentType(peek[:n])
336 fd.Close()
337
338 url := fmt.Sprintf("https://%s/meme/%s", serverName, name)
339 fileid, err := savefile("", name, name, url, ct, false, nil)
340 if err != nil {
341 log.Printf("error saving meme: %s", err)
342 return x
343 }
344 var d Donk
345 d.FileID = fileid
346 d.XID = ""
347 d.Name = name
348 d.Media = ct
349 d.URL = url
350 d.Local = false
351 honk.Donks = append(honk.Donks, &d)
352 return ""
353 }
354 honk.Noise = re_memes.ReplaceAllStringFunc(honk.Noise, repl)
355}
356
357var re_bolder = regexp.MustCompile(`(^|\W)\*\*([\w\s,.!?':_-]+)\*\*($|\W)`)
358var re_italicer = regexp.MustCompile(`(^|\W)\*([\w\s,.!?':_-]+)\*($|\W)`)
359var re_bigcoder = regexp.MustCompile("```\n?((?s:.*?))\n?```\n?")
360var re_coder = regexp.MustCompile("`([^`]*)`")
361var re_quoter = regexp.MustCompile(`(?m:^> (.*)\n?)`)
362
363func markitzero(s string) string {
364 var bigcodes []string
365 bigsaver := func(code string) string {
366 bigcodes = append(bigcodes, code)
367 return "``````"
368 }
369 s = re_bigcoder.ReplaceAllStringFunc(s, bigsaver)
370 var lilcodes []string
371 lilsaver := func(code string) string {
372 lilcodes = append(lilcodes, code)
373 return "`x`"
374 }
375 s = re_coder.ReplaceAllStringFunc(s, lilsaver)
376 s = re_bolder.ReplaceAllString(s, "$1<b>$2</b>$3")
377 s = re_italicer.ReplaceAllString(s, "$1<i>$2</i>$3")
378 s = re_quoter.ReplaceAllString(s, "<blockquote>$1</blockquote><p>")
379 lilun := func(s string) string {
380 code := lilcodes[0]
381 lilcodes = lilcodes[1:]
382 return code
383 }
384 s = re_coder.ReplaceAllStringFunc(s, lilun)
385 bigun := func(s string) string {
386 code := bigcodes[0]
387 bigcodes = bigcodes[1:]
388 return code
389 }
390 s = re_bigcoder.ReplaceAllStringFunc(s, bigun)
391 s = re_bigcoder.ReplaceAllString(s, "<pre><code>$1</code></pre><p>")
392 s = re_coder.ReplaceAllString(s, "<code>$1</code>")
393 return s
394}
395
396func obfusbreak(s string) string {
397 s = strings.TrimSpace(s)
398 s = strings.Replace(s, "\r", "", -1)
399 s = html.EscapeString(s)
400 // dammit go
401 s = strings.Replace(s, "'", "'", -1)
402 linkfn := func(url string) string {
403 if url[0] == '@' {
404 return url
405 }
406 addparen := false
407 adddot := false
408 if strings.HasSuffix(url, ")") && strings.IndexByte(url, '(') == -1 {
409 url = url[:len(url)-1]
410 addparen = true
411 }
412 if strings.HasSuffix(url, ".") {
413 url = url[:len(url)-1]
414 adddot = true
415 }
416 url = fmt.Sprintf(`<a class="mention u-url" href="%s">%s</a>`, url, url)
417 if adddot {
418 url += "."
419 }
420 if addparen {
421 url += ")"
422 }
423 return url
424 }
425 s = re_link.ReplaceAllStringFunc(s, linkfn)
426
427 s = markitzero(s)
428
429 s = strings.Replace(s, "\n", "<br>", -1)
430 return s
431}
432
433var re_quickmention = regexp.MustCompile("(^| )@[[:alnum:]]+ ")
434
435func quickrename(s string, userid int64) string {
436 return re_quickmention.ReplaceAllStringFunc(s, func(m string) string {
437 prefix := ""
438 if m[0] == ' ' {
439 prefix = " "
440 m = m[1:]
441 }
442 prefix += "@"
443 m = m[1:]
444 m = m[:len(m)-1]
445
446 row := stmtOneHonker.QueryRow(m, userid)
447 var xid string
448 err := row.Scan(&xid)
449 if err == nil {
450 _, name := handles(xid)
451 if name != "" {
452 m = name
453 }
454 }
455 return prefix + m + " "
456 })
457}
458
459func mentionize(s string) string {
460 s = re_mentions.ReplaceAllStringFunc(s, func(m string) string {
461 where := gofish(m)
462 if where == "" {
463 return m
464 }
465 who := m[0 : 1+strings.IndexByte(m[1:], '@')]
466 return fmt.Sprintf(`<span class="h-card"><a class="u-url mention" href="%s">%s</a></span>`,
467 html.EscapeString(where), html.EscapeString(who))
468 })
469 s = re_urltions.ReplaceAllStringFunc(s, func(m string) string {
470 return fmt.Sprintf(`<span class="h-card"><a class="u-url mention" href="%s">%s</a></span>`,
471 html.EscapeString(m[1:]), html.EscapeString(m))
472 })
473 return s
474}
475
476func ontologize(s string) string {
477 s = re_hashes.ReplaceAllStringFunc(s, func(o string) string {
478 if o[0] == '&' {
479 return o
480 }
481 p := ""
482 h := o
483 if h[0] != '#' {
484 p = h[:1]
485 h = h[1:]
486 }
487 return fmt.Sprintf(`%s<a class="mention u-url" href="https://%s/o/%s">%s</a>`, p, serverName,
488 strings.ToLower(h[1:]), h)
489 })
490 return s
491}
492
493var re_unurl = regexp.MustCompile("https://([^/]+).*/([^/]+)")
494var re_urlhost = regexp.MustCompile("https://([^/ ]+)")
495
496func originate(u string) string {
497 m := re_urlhost.FindStringSubmatch(u)
498 if len(m) > 1 {
499 return m[1]
500 }
501 return ""
502}
503
504var allhandles = make(map[string]string)
505var handlelock sync.Mutex
506
507// handle, handle@host
508func handles(xid string) (string, string) {
509 if xid == "" {
510 return "", ""
511 }
512 handlelock.Lock()
513 handle := allhandles[xid]
514 handlelock.Unlock()
515 if handle == "" {
516 handle = findhandle(xid)
517 handlelock.Lock()
518 allhandles[xid] = handle
519 handlelock.Unlock()
520 }
521 if handle == xid {
522 return xid, xid
523 }
524 return handle, handle + "@" + originate(xid)
525}
526
527func findhandle(xid string) string {
528 row := stmtGetXonker.QueryRow(xid, "handle")
529 var handle string
530 err := row.Scan(&handle)
531 if err != nil {
532 p, _ := investigate(xid)
533 if p == nil {
534 m := re_unurl.FindStringSubmatch(xid)
535 if len(m) > 2 {
536 handle = m[2]
537 } else {
538 handle = xid
539 }
540 } else {
541 handle = p.Handle
542 }
543 _, err = stmtSaveXonker.Exec(xid, handle, "handle")
544 if err != nil {
545 log.Printf("error saving handle: %s", err)
546 }
547 }
548 return handle
549}
550
551var handleprelock sync.Mutex
552
553func prehandle(xid string) {
554 handleprelock.Lock()
555 defer handleprelock.Unlock()
556 handles(xid)
557}
558
559func prepend(s string, x []string) []string {
560 return append([]string{s}, x...)
561}
562
563// pleroma leaks followers addressed posts to followers
564func butnottooloud(aud []string) {
565 for i, a := range aud {
566 if strings.HasSuffix(a, "/followers") {
567 aud[i] = ""
568 }
569 }
570}
571
572func keepitquiet(aud []string) bool {
573 for _, a := range aud {
574 if a == thewholeworld {
575 return false
576 }
577 }
578 return true
579}
580
581func firstclass(honk *Honk) bool {
582 return honk.Audience[0] == thewholeworld
583}
584
585func oneofakind(a []string) []string {
586 var x []string
587 for n, s := range a {
588 if s != "" {
589 x = append(x, s)
590 for i := n + 1; i < len(a); i++ {
591 if a[i] == s {
592 a[i] = ""
593 }
594 }
595 }
596 }
597 return x
598}
599
600var ziggies = make(map[string]*rsa.PrivateKey)
601var zaggies = make(map[string]*rsa.PublicKey)
602var ziggylock sync.Mutex
603
604func ziggy(username string) (keyname string, key *rsa.PrivateKey) {
605 ziggylock.Lock()
606 key = ziggies[username]
607 ziggylock.Unlock()
608 if key == nil {
609 db := opendatabase()
610 row := db.QueryRow("select seckey from users where username = ?", username)
611 var data string
612 row.Scan(&data)
613 var err error
614 key, _, err = httpsig.DecodeKey(data)
615 if err != nil {
616 log.Printf("error decoding %s seckey: %s", username, err)
617 return
618 }
619 ziggylock.Lock()
620 ziggies[username] = key
621 ziggylock.Unlock()
622 }
623 keyname = fmt.Sprintf("https://%s/%s/%s#key", serverName, userSep, username)
624 return
625}
626
627func zaggy(keyname string) (key *rsa.PublicKey) {
628 ziggylock.Lock()
629 key = zaggies[keyname]
630 ziggylock.Unlock()
631 if key != nil {
632 return
633 }
634 row := stmtGetXonker.QueryRow(keyname, "pubkey")
635 var data string
636 err := row.Scan(&data)
637 if err != nil {
638 log.Printf("hitting the webs for missing pubkey: %s", keyname)
639 j, err := GetJunk(keyname)
640 if err != nil {
641 log.Printf("error getting %s pubkey: %s", keyname, err)
642 return
643 }
644 keyobj, ok := j.GetMap("publicKey")
645 if ok {
646 j = keyobj
647 }
648 data, ok = j.GetString("publicKeyPem")
649 if !ok {
650 log.Printf("error finding %s pubkey", keyname)
651 return
652 }
653 _, ok = j.GetString("owner")
654 if !ok {
655 log.Printf("error finding %s pubkey owner", keyname)
656 return
657 }
658 _, key, err = httpsig.DecodeKey(data)
659 if err != nil {
660 log.Printf("error decoding %s pubkey: %s", keyname, err)
661 return
662 }
663 _, err = stmtSaveXonker.Exec(keyname, data, "pubkey")
664 if err != nil {
665 log.Printf("error saving key: %s", err)
666 }
667 } else {
668 _, key, err = httpsig.DecodeKey(data)
669 if err != nil {
670 log.Printf("error decoding %s pubkey: %s", keyname, err)
671 return
672 }
673 }
674 ziggylock.Lock()
675 zaggies[keyname] = key
676 ziggylock.Unlock()
677 return
678}
679
680func makeitworksomehowwithoutregardforkeycontinuity(keyname string, r *http.Request, payload []byte) (string, error) {
681 _, err := stmtDeleteXonker.Exec(keyname, "pubkey")
682 if err != nil {
683 log.Printf("error deleting key: %s", err)
684 }
685 ziggylock.Lock()
686 delete(zaggies, keyname)
687 ziggylock.Unlock()
688 return httpsig.VerifyRequest(r, payload, zaggy)
689}
690
691var thumbbiters map[int64]map[string]bool
692var zoggles map[int64]map[string]bool
693var zordses map[int64][]*regexp.Regexp
694var zilences map[int64][]*regexp.Regexp
695var thumblock sync.Mutex
696
697func bitethethumbs() {
698 rows, err := stmtThumbBiters.Query()
699 if err != nil {
700 log.Printf("error getting thumbbiters: %s", err)
701 return
702 }
703 defer rows.Close()
704
705 thumblock.Lock()
706 defer thumblock.Unlock()
707 thumbbiters = make(map[int64]map[string]bool)
708 zoggles = make(map[int64]map[string]bool)
709 zordses = make(map[int64][]*regexp.Regexp)
710 zilences = make(map[int64][]*regexp.Regexp)
711 for rows.Next() {
712 var userid int64
713 var name, wherefore string
714 err = rows.Scan(&userid, &name, &wherefore)
715 if err != nil {
716 log.Printf("error scanning zonker: %s", err)
717 continue
718 }
719 if wherefore == "zord" || wherefore == "zilence" {
720 zord := "\\b(?i:" + name + ")\\b"
721 re, err := regexp.Compile(zord)
722 if err != nil {
723 log.Printf("error compiling zord: %s", err)
724 } else {
725 if wherefore == "zord" {
726 zordses[userid] = append(zordses[userid], re)
727 } else {
728 zilences[userid] = append(zilences[userid], re)
729 }
730 }
731 }
732 if wherefore == "zoggle" {
733 m := zoggles[userid]
734 if m == nil {
735 m = make(map[string]bool)
736 zoggles[userid] = m
737 }
738 m[name] = true
739 }
740 if wherefore == "zonker" || wherefore == "zomain" {
741 m := thumbbiters[userid]
742 if m == nil {
743 m = make(map[string]bool)
744 thumbbiters[userid] = m
745 }
746 m[name] = true
747 }
748 }
749}
750
751func getzords(userid int64) []*regexp.Regexp {
752 thumblock.Lock()
753 defer thumblock.Unlock()
754 return zordses[userid]
755}
756
757func getzilences(userid int64) []*regexp.Regexp {
758 thumblock.Lock()
759 defer thumblock.Unlock()
760 return zilences[userid]
761}
762
763func thoudostbitethythumb(userid int64, who []string, objid string) bool {
764 thumblock.Lock()
765 biters := thumbbiters[userid]
766 thumblock.Unlock()
767 objwhere := originate(objid)
768 if objwhere != "" && biters[objwhere] {
769 log.Printf("thumbbiter: %s", objid)
770 return true
771 }
772 for _, w := range who {
773 if biters[w] {
774 log.Printf("thumbbiter: %s", w)
775 return true
776 }
777 where := originate(w)
778 if where != "" {
779 if biters[where] {
780 log.Printf("thumbbiter: %s", w)
781 return true
782 }
783 }
784 }
785 return false
786}
787
788func stealthmode(userid int64, r *http.Request) bool {
789 agent := r.UserAgent()
790 agent = originate(agent)
791 addr := r.Header.Get("X-Forwarded-For")
792 thumblock.Lock()
793 biters := thumbbiters[userid]
794 thumblock.Unlock()
795 fake := (agent != "" && biters[agent]) || (addr != "" && biters[addr])
796 if fake {
797 log.Printf("faking 404 for %s from %s", agent, addr)
798 }
799 return fake
800}
801
802func keymatch(keyname string, actor string) string {
803 hash := strings.IndexByte(keyname, '#')
804 if hash == -1 {
805 hash = len(keyname)
806 }
807 owner := keyname[0:hash]
808 if owner == actor {
809 return originate(actor)
810 }
811 return ""
812}