source: code/trunk/service.go@ 642

Last change on this file since 642 was 625, checked in by contact, 4 years ago

service: allow updating other users
File size: 25.1 KB
Line 
1package soju
2
3import (
4 "crypto/sha1"
5 "crypto/sha256"
6 "crypto/sha512"
7 "encoding/hex"
8 "errors"
9 "flag"
10 "fmt"
11 "io/ioutil"
12 "sort"
13 "strconv"
14 "strings"
15 "time"
16 "unicode"
17
18 "golang.org/x/crypto/bcrypt"
19 "gopkg.in/irc.v3"
20)
21
22const serviceNick = "BouncerServ"
23const serviceNickCM = "bouncerserv"
24const serviceRealname = "soju bouncer service"
25
26// maxRSABits is the maximum number of RSA key bits used when generating a new
27// private key.
28const maxRSABits = 8192
29
30var servicePrefix = &irc.Prefix{
31 Name: serviceNick,
32 User: serviceNick,
33 Host: serviceNick,
34}
35
36type serviceCommandSet map[string]*serviceCommand
37
38type serviceCommand struct {
39 usage string
40 desc string
41 handle func(dc *downstreamConn, params []string) error
42 children serviceCommandSet
43 admin bool
44}
45
46func sendServiceNOTICE(dc *downstreamConn, text string) {
47 dc.SendMessage(&irc.Message{
48 Prefix: servicePrefix,
49 Command: "NOTICE",
50 Params: []string{dc.nick, text},
51 })
52}
53
54func sendServicePRIVMSG(dc *downstreamConn, text string) {
55 dc.SendMessage(&irc.Message{
56 Prefix: servicePrefix,
57 Command: "PRIVMSG",
58 Params: []string{dc.nick, text},
59 })
60}
61
62func splitWords(s string) ([]string, error) {
63 var words []string
64 var lastWord strings.Builder
65 escape := false
66 prev := ' '
67 wordDelim := ' '
68
69 for _, r := range s {
70 if escape {
71 // last char was a backslash, write the byte as-is.
72 lastWord.WriteRune(r)
73 escape = false
74 } else if r == '\\' {
75 escape = true
76 } else if wordDelim == ' ' && unicode.IsSpace(r) {
77 // end of last word
78 if !unicode.IsSpace(prev) {
79 words = append(words, lastWord.String())
80 lastWord.Reset()
81 }
82 } else if r == wordDelim {
83 // wordDelim is either " or ', switch back to
84 // space-delimited words.
85 wordDelim = ' '
86 } else if r == '"' || r == '\'' {
87 if wordDelim == ' ' {
88 // start of (double-)quoted word
89 wordDelim = r
90 } else {
91 // either wordDelim is " and r is ' or vice-versa
92 lastWord.WriteRune(r)
93 }
94 } else {
95 lastWord.WriteRune(r)
96 }
97
98 prev = r
99 }
100
101 if !unicode.IsSpace(prev) {
102 words = append(words, lastWord.String())
103 }
104
105 if wordDelim != ' ' {
106 return nil, fmt.Errorf("unterminated quoted string")
107 }
108 if escape {
109 return nil, fmt.Errorf("unterminated backslash sequence")
110 }
111
112 return words, nil
113}
114
115func handleServicePRIVMSG(dc *downstreamConn, text string) {
116 words, err := splitWords(text)
117 if err != nil {
118 sendServicePRIVMSG(dc, fmt.Sprintf(`error: failed to parse command: %v`, err))
119 return
120 }
121
122 cmd, params, err := serviceCommands.Get(words)
123 if err != nil {
124 sendServicePRIVMSG(dc, fmt.Sprintf(`error: %v (type "help" for a list of commands)`, err))
125 return
126 }
127 if cmd.admin && !dc.user.Admin {
128 sendServicePRIVMSG(dc, "error: you must be an admin to use this command")
129 return
130 }
131
132 if cmd.handle == nil {
133 if len(cmd.children) > 0 {
134 var l []string
135 appendServiceCommandSetHelp(cmd.children, words, dc.user.Admin, &l)
136 sendServicePRIVMSG(dc, "available commands: "+strings.Join(l, ", "))
137 } else {
138 // Pretend the command does not exist if it has neither children nor handler.
139 // This is obviously a bug but it is better to not die anyway.
140 dc.logger.Printf("command without handler and subcommands invoked:", words[0])
141 sendServicePRIVMSG(dc, fmt.Sprintf("command %q not found", words[0]))
142 }
143 return
144 }
145
146 if err := cmd.handle(dc, params); err != nil {
147 sendServicePRIVMSG(dc, fmt.Sprintf("error: %v", err))
148 }
149}
150
151func (cmds serviceCommandSet) Get(params []string) (*serviceCommand, []string, error) {
152 if len(params) == 0 {
153 return nil, nil, fmt.Errorf("no command specified")
154 }
155
156 name := params[0]
157 params = params[1:]
158
159 cmd, ok := cmds[name]
160 if !ok {
161 for k := range cmds {
162 if !strings.HasPrefix(k, name) {
163 continue
164 }
165 if cmd != nil {
166 return nil, params, fmt.Errorf("command %q is ambiguous", name)
167 }
168 cmd = cmds[k]
169 }
170 }
171 if cmd == nil {
172 return nil, params, fmt.Errorf("command %q not found", name)
173 }
174
175 if len(params) == 0 || len(cmd.children) == 0 {
176 return cmd, params, nil
177 }
178 return cmd.children.Get(params)
179}
180
181func (cmds serviceCommandSet) Names() []string {
182 l := make([]string, 0, len(cmds))
183 for name := range cmds {
184 l = append(l, name)
185 }
186 sort.Strings(l)
187 return l
188}
189
190var serviceCommands serviceCommandSet
191
192func init() {
193 serviceCommands = serviceCommandSet{
194 "help": {
195 usage: "[command]",
196 desc: "print help message",
197 handle: handleServiceHelp,
198 },
199 "network": {
200 children: serviceCommandSet{
201 "create": {
202 usage: "-addr <addr> [-name name] [-username username] [-pass pass] [-realname realname] [-nick nick] [-enabled enabled] [-connect-command command]...",
203 desc: "add a new network",
204 handle: handleServiceNetworkCreate,
205 },
206 "status": {
207 desc: "show a list of saved networks and their current status",
208 handle: handleServiceNetworkStatus,
209 },
210 "update": {
211 usage: "<name> [-addr addr] [-name name] [-username username] [-pass pass] [-realname realname] [-nick nick] [-enabled enabled] [-connect-command command]...",
212 desc: "update a network",
213 handle: handleServiceNetworkUpdate,
214 },
215 "delete": {
216 usage: "<name>",
217 desc: "delete a network",
218 handle: handleServiceNetworkDelete,
219 },
220 "quote": {
221 usage: "<name> <command>",
222 desc: "send a raw line to a network",
223 handle: handleServiceNetworkQuote,
224 },
225 },
226 },
227 "certfp": {
228 children: serviceCommandSet{
229 "generate": {
230 usage: "[-key-type rsa|ecdsa|ed25519] [-bits N] <network name>",
231 desc: "generate a new self-signed certificate, defaults to using RSA-3072 key",
232 handle: handleServiceCertFPGenerate,
233 },
234 "fingerprint": {
235 usage: "<network name>",
236 desc: "show fingerprints of certificate associated with the network",
237 handle: handleServiceCertFPFingerprints,
238 },
239 },
240 },
241 "sasl": {
242 children: serviceCommandSet{
243 "set-plain": {
244 usage: "<network name> <username> <password>",
245 desc: "set SASL PLAIN credentials",
246 handle: handleServiceSASLSetPlain,
247 },
248 "reset": {
249 usage: "<network name>",
250 desc: "disable SASL authentication and remove stored credentials",
251 handle: handleServiceSASLReset,
252 },
253 },
254 },
255 "user": {
256 children: serviceCommandSet{
257 "create": {
258 usage: "-username <username> -password <password> [-realname <realname>] [-admin]",
259 desc: "create a new soju user",
260 handle: handleUserCreate,
261 admin: true,
262 },
263 "update": {
264 usage: "[-password <password>] [-realname <realname>]",
265 desc: "update the current user",
266 handle: handleUserUpdate,
267 },
268 "delete": {
269 usage: "<username>",
270 desc: "delete a user",
271 handle: handleUserDelete,
272 admin: true,
273 },
274 },
275 },
276 "channel": {
277 children: serviceCommandSet{
278 "status": {
279 usage: "[-network name]",
280 desc: "show a list of saved channels and their current status",
281 handle: handleServiceChannelStatus,
282 },
283 "update": {
284 usage: "<name> [-relay-detached <default|none|highlight|message>] [-reattach-on <default|none|highlight|message>] [-detach-after <duration>] [-detach-on <default|none|highlight|message>]",
285 desc: "update a channel",
286 handle: handleServiceChannelUpdate,
287 },
288 },
289 },
290 "server": {
291 children: serviceCommandSet{
292 "status": {
293 desc: "show server statistics",
294 handle: handleServiceServerStatus,
295 admin: true,
296 },
297 "notice": {
298 desc: "broadcast a notice to all connected bouncer users",
299 handle: handleServiceServerNotice,
300 admin: true,
301 },
302 },
303 admin: true,
304 },
305 }
306}
307
308func appendServiceCommandSetHelp(cmds serviceCommandSet, prefix []string, admin bool, l *[]string) {
309 for _, name := range cmds.Names() {
310 cmd := cmds[name]
311 if cmd.admin && !admin {
312 continue
313 }
314 words := append(prefix, name)
315 if len(cmd.children) == 0 {
316 s := strings.Join(words, " ")
317 *l = append(*l, s)
318 } else {
319 appendServiceCommandSetHelp(cmd.children, words, admin, l)
320 }
321 }
322}
323
324func handleServiceHelp(dc *downstreamConn, params []string) error {
325 if len(params) > 0 {
326 cmd, rest, err := serviceCommands.Get(params)
327 if err != nil {
328 return err
329 }
330 words := params[:len(params)-len(rest)]
331
332 if len(cmd.children) > 0 {
333 var l []string
334 appendServiceCommandSetHelp(cmd.children, words, dc.user.Admin, &l)
335 sendServicePRIVMSG(dc, "available commands: "+strings.Join(l, ", "))
336 } else {
337 text := strings.Join(words, " ")
338 if cmd.usage != "" {
339 text += " " + cmd.usage
340 }
341 text += ": " + cmd.desc
342
343 sendServicePRIVMSG(dc, text)
344 }
345 } else {
346 var l []string
347 appendServiceCommandSetHelp(serviceCommands, nil, dc.user.Admin, &l)
348 sendServicePRIVMSG(dc, "available commands: "+strings.Join(l, ", "))
349 }
350 return nil
351}
352
353func newFlagSet() *flag.FlagSet {
354 fs := flag.NewFlagSet("", flag.ContinueOnError)
355 fs.SetOutput(ioutil.Discard)
356 return fs
357}
358
359type stringSliceFlag []string
360
361func (v *stringSliceFlag) String() string {
362 return fmt.Sprint([]string(*v))
363}
364
365func (v *stringSliceFlag) Set(s string) error {
366 *v = append(*v, s)
367 return nil
368}
369
370// stringPtrFlag is a flag value populating a string pointer. This allows to
371// disambiguate between a flag that hasn't been set and a flag that has been
372// set to an empty string.
373type stringPtrFlag struct {
374 ptr **string
375}
376
377func (f stringPtrFlag) String() string {
378 if f.ptr == nil || *f.ptr == nil {
379 return ""
380 }
381 return **f.ptr
382}
383
384func (f stringPtrFlag) Set(s string) error {
385 *f.ptr = &s
386 return nil
387}
388
389type boolPtrFlag struct {
390 ptr **bool
391}
392
393func (f boolPtrFlag) String() string {
394 if f.ptr == nil || *f.ptr == nil {
395 return "<nil>"
396 }
397 return strconv.FormatBool(**f.ptr)
398}
399
400func (f boolPtrFlag) Set(s string) error {
401 v, err := strconv.ParseBool(s)
402 if err != nil {
403 return err
404 }
405 *f.ptr = &v
406 return nil
407}
408
409type networkFlagSet struct {
410 *flag.FlagSet
411 Addr, Name, Nick, Username, Pass, Realname *string
412 Enabled *bool
413 ConnectCommands []string
414}
415
416func newNetworkFlagSet() *networkFlagSet {
417 fs := &networkFlagSet{FlagSet: newFlagSet()}
418 fs.Var(stringPtrFlag{&fs.Addr}, "addr", "")
419 fs.Var(stringPtrFlag{&fs.Name}, "name", "")
420 fs.Var(stringPtrFlag{&fs.Nick}, "nick", "")
421 fs.Var(stringPtrFlag{&fs.Username}, "username", "")
422 fs.Var(stringPtrFlag{&fs.Pass}, "pass", "")
423 fs.Var(stringPtrFlag{&fs.Realname}, "realname", "")
424 fs.Var(boolPtrFlag{&fs.Enabled}, "enabled", "")
425 fs.Var((*stringSliceFlag)(&fs.ConnectCommands), "connect-command", "")
426 return fs
427}
428
429func (fs *networkFlagSet) update(network *Network) error {
430 if fs.Addr != nil {
431 if addrParts := strings.SplitN(*fs.Addr, "://", 2); len(addrParts) == 2 {
432 scheme := addrParts[0]
433 switch scheme {
434 case "ircs", "irc+insecure", "unix":
435 default:
436 return fmt.Errorf("unknown scheme %q (supported schemes: ircs, irc+insecure, unix)", scheme)
437 }
438 }
439 network.Addr = *fs.Addr
440 }
441 if fs.Name != nil {
442 network.Name = *fs.Name
443 }
444 if fs.Nick != nil {
445 network.Nick = *fs.Nick
446 }
447 if fs.Username != nil {
448 network.Username = *fs.Username
449 }
450 if fs.Pass != nil {
451 network.Pass = *fs.Pass
452 }
453 if fs.Realname != nil {
454 network.Realname = *fs.Realname
455 }
456 if fs.Enabled != nil {
457 network.Enabled = *fs.Enabled
458 }
459 if fs.ConnectCommands != nil {
460 if len(fs.ConnectCommands) == 1 && fs.ConnectCommands[0] == "" {
461 network.ConnectCommands = nil
462 } else {
463 for _, command := range fs.ConnectCommands {
464 _, err := irc.ParseMessage(command)
465 if err != nil {
466 return fmt.Errorf("flag -connect-command must be a valid raw irc command string: %q: %v", command, err)
467 }
468 }
469 network.ConnectCommands = fs.ConnectCommands
470 }
471 }
472 return nil
473}
474
475func handleServiceNetworkCreate(dc *downstreamConn, params []string) error {
476 fs := newNetworkFlagSet()
477 if err := fs.Parse(params); err != nil {
478 return err
479 }
480 if fs.Addr == nil {
481 return fmt.Errorf("flag -addr is required")
482 }
483
484 record := &Network{
485 Addr: *fs.Addr,
486 Nick: dc.nick,
487 Enabled: true,
488 }
489 if err := fs.update(record); err != nil {
490 return err
491 }
492
493 network, err := dc.user.createNetwork(record)
494 if err != nil {
495 return fmt.Errorf("could not create network: %v", err)
496 }
497
498 sendServicePRIVMSG(dc, fmt.Sprintf("created network %q", network.GetName()))
499 return nil
500}
501
502func handleServiceNetworkStatus(dc *downstreamConn, params []string) error {
503 n := 0
504 dc.user.forEachNetwork(func(net *network) {
505 var statuses []string
506 var details string
507 if uc := net.conn; uc != nil {
508 if dc.nick != uc.nick {
509 statuses = append(statuses, "connected as "+uc.nick)
510 } else {
511 statuses = append(statuses, "connected")
512 }
513 details = fmt.Sprintf("%v channels", uc.channels.Len())
514 } else if !net.Enabled {
515 statuses = append(statuses, "disabled")
516 } else {
517 statuses = append(statuses, "disconnected")
518 if net.lastError != nil {
519 details = net.lastError.Error()
520 }
521 }
522
523 if net == dc.network {
524 statuses = append(statuses, "current")
525 }
526
527 name := net.GetName()
528 if name != net.Addr {
529 name = fmt.Sprintf("%v (%v)", name, net.Addr)
530 }
531
532 s := fmt.Sprintf("%v [%v]", name, strings.Join(statuses, ", "))
533 if details != "" {
534 s += ": " + details
535 }
536 sendServicePRIVMSG(dc, s)
537
538 n++
539 })
540
541 if n == 0 {
542 sendServicePRIVMSG(dc, `No network configured, add one with "network create".`)
543 }
544
545 return nil
546}
547
548func handleServiceNetworkUpdate(dc *downstreamConn, params []string) error {
549 if len(params) < 1 {
550 return fmt.Errorf("expected at least one argument")
551 }
552
553 fs := newNetworkFlagSet()
554 if err := fs.Parse(params[1:]); err != nil {
555 return err
556 }
557
558 net := dc.user.getNetwork(params[0])
559 if net == nil {
560 return fmt.Errorf("unknown network %q", params[0])
561 }
562
563 record := net.Network // copy network record because we'll mutate it
564 if err := fs.update(&record); err != nil {
565 return err
566 }
567
568 network, err := dc.user.updateNetwork(&record)
569 if err != nil {
570 return fmt.Errorf("could not update network: %v", err)
571 }
572
573 sendServicePRIVMSG(dc, fmt.Sprintf("updated network %q", network.GetName()))
574 return nil
575}
576
577func handleServiceNetworkDelete(dc *downstreamConn, params []string) error {
578 if len(params) != 1 {
579 return fmt.Errorf("expected exactly one argument")
580 }
581
582 net := dc.user.getNetwork(params[0])
583 if net == nil {
584 return fmt.Errorf("unknown network %q", params[0])
585 }
586
587 if err := dc.user.deleteNetwork(net.ID); err != nil {
588 return err
589 }
590
591 sendServicePRIVMSG(dc, fmt.Sprintf("deleted network %q", net.GetName()))
592 return nil
593}
594
595func handleServiceNetworkQuote(dc *downstreamConn, params []string) error {
596 if len(params) != 2 {
597 return fmt.Errorf("expected exactly two arguments")
598 }
599
600 net := dc.user.getNetwork(params[0])
601 if net == nil {
602 return fmt.Errorf("unknown network %q", params[0])
603 }
604
605 uc := net.conn
606 if uc == nil {
607 return fmt.Errorf("network %q is not currently connected", params[0])
608 }
609
610 m, err := irc.ParseMessage(params[1])
611 if err != nil {
612 return fmt.Errorf("failed to parse command %q: %v", params[1], err)
613 }
614 uc.SendMessage(m)
615
616 sendServicePRIVMSG(dc, fmt.Sprintf("sent command to %q", net.GetName()))
617 return nil
618}
619
620func sendCertfpFingerprints(dc *downstreamConn, cert []byte) {
621 sha1Sum := sha1.Sum(cert)
622 sendServicePRIVMSG(dc, "SHA-1 fingerprint: "+hex.EncodeToString(sha1Sum[:]))
623 sha256Sum := sha256.Sum256(cert)
624 sendServicePRIVMSG(dc, "SHA-256 fingerprint: "+hex.EncodeToString(sha256Sum[:]))
625 sha512Sum := sha512.Sum512(cert)
626 sendServicePRIVMSG(dc, "SHA-512 fingerprint: "+hex.EncodeToString(sha512Sum[:]))
627}
628
629func handleServiceCertFPGenerate(dc *downstreamConn, params []string) error {
630 fs := newFlagSet()
631 keyType := fs.String("key-type", "rsa", "key type to generate (rsa, ecdsa, ed25519)")
632 bits := fs.Int("bits", 3072, "size of key to generate, meaningful only for RSA")
633
634 if err := fs.Parse(params); err != nil {
635 return err
636 }
637
638 if len(fs.Args()) != 1 {
639 return errors.New("exactly one argument is required")
640 }
641
642 net := dc.user.getNetwork(fs.Arg(0))
643 if net == nil {
644 return fmt.Errorf("unknown network %q", fs.Arg(0))
645 }
646
647 if *bits <= 0 || *bits > maxRSABits {
648 return fmt.Errorf("invalid value for -bits")
649 }
650
651 privKey, cert, err := generateCertFP(*keyType, *bits)
652 if err != nil {
653 return err
654 }
655
656 net.SASL.External.CertBlob = cert
657 net.SASL.External.PrivKeyBlob = privKey
658 net.SASL.Mechanism = "EXTERNAL"
659
660 if err := dc.srv.db.StoreNetwork(dc.user.ID, &net.Network); err != nil {
661 return err
662 }
663
664 sendServicePRIVMSG(dc, "certificate generated")
665 sendCertfpFingerprints(dc, cert)
666 return nil
667}
668
669func handleServiceCertFPFingerprints(dc *downstreamConn, params []string) error {
670 if len(params) != 1 {
671 return fmt.Errorf("expected exactly one argument")
672 }
673
674 net := dc.user.getNetwork(params[0])
675 if net == nil {
676 return fmt.Errorf("unknown network %q", params[0])
677 }
678
679 if net.SASL.Mechanism != "EXTERNAL" {
680 return fmt.Errorf("CertFP not set up")
681 }
682
683 sendCertfpFingerprints(dc, net.SASL.External.CertBlob)
684 return nil
685}
686
687func handleServiceSASLSetPlain(dc *downstreamConn, params []string) error {
688 if len(params) != 3 {
689 return fmt.Errorf("expected exactly 3 arguments")
690 }
691
692 net := dc.user.getNetwork(params[0])
693 if net == nil {
694 return fmt.Errorf("unknown network %q", params[0])
695 }
696
697 net.SASL.Plain.Username = params[1]
698 net.SASL.Plain.Password = params[2]
699 net.SASL.Mechanism = "PLAIN"
700
701 if err := dc.srv.db.StoreNetwork(dc.user.ID, &net.Network); err != nil {
702 return err
703 }
704
705 sendServicePRIVMSG(dc, "credentials saved")
706 return nil
707}
708
709func handleServiceSASLReset(dc *downstreamConn, params []string) error {
710 if len(params) != 1 {
711 return fmt.Errorf("expected exactly one argument")
712 }
713
714 net := dc.user.getNetwork(params[0])
715 if net == nil {
716 return fmt.Errorf("unknown network %q", params[0])
717 }
718
719 net.SASL.Plain.Username = ""
720 net.SASL.Plain.Password = ""
721 net.SASL.External.CertBlob = nil
722 net.SASL.External.PrivKeyBlob = nil
723 net.SASL.Mechanism = ""
724
725 if err := dc.srv.db.StoreNetwork(dc.user.ID, &net.Network); err != nil {
726 return err
727 }
728
729 sendServicePRIVMSG(dc, "credentials reset")
730 return nil
731}
732
733func handleUserCreate(dc *downstreamConn, params []string) error {
734 fs := newFlagSet()
735 username := fs.String("username", "", "")
736 password := fs.String("password", "", "")
737 realname := fs.String("realname", "", "")
738 admin := fs.Bool("admin", false, "")
739
740 if err := fs.Parse(params); err != nil {
741 return err
742 }
743 if *username == "" {
744 return fmt.Errorf("flag -username is required")
745 }
746 if *password == "" {
747 return fmt.Errorf("flag -password is required")
748 }
749
750 hashed, err := bcrypt.GenerateFromPassword([]byte(*password), bcrypt.DefaultCost)
751 if err != nil {
752 return fmt.Errorf("failed to hash password: %v", err)
753 }
754
755 user := &User{
756 Username: *username,
757 Password: string(hashed),
758 Realname: *realname,
759 Admin: *admin,
760 }
761 if _, err := dc.srv.createUser(user); err != nil {
762 return fmt.Errorf("could not create user: %v", err)
763 }
764
765 sendServicePRIVMSG(dc, fmt.Sprintf("created user %q", *username))
766 return nil
767}
768
769func popArg(params []string) (string, []string) {
770 if len(params) > 0 && !strings.HasPrefix(params[0], "-") {
771 return params[0], params[1:]
772 }
773 return "", params
774}
775
776func handleUserUpdate(dc *downstreamConn, params []string) error {
777 var password, realname *string
778 var admin *bool
779 fs := newFlagSet()
780 fs.Var(stringPtrFlag{&password}, "password", "")
781 fs.Var(stringPtrFlag{&realname}, "realname", "")
782 fs.Var(boolPtrFlag{&admin}, "admin", "")
783
784 username, params := popArg(params)
785 if err := fs.Parse(params); err != nil {
786 return err
787 }
788 if len(fs.Args()) > 0 {
789 return fmt.Errorf("unexpected argument")
790 }
791
792 var hashed *string
793 if password != nil {
794 hashedBytes, err := bcrypt.GenerateFromPassword([]byte(*password), bcrypt.DefaultCost)
795 if err != nil {
796 return fmt.Errorf("failed to hash password: %v", err)
797 }
798 hashedStr := string(hashedBytes)
799 hashed = &hashedStr
800 }
801
802 if username != "" && username != dc.user.Username {
803 if !dc.user.Admin {
804 return fmt.Errorf("you must be an admin to update other users")
805 }
806 if realname != nil {
807 return fmt.Errorf("cannot update -realname of other user")
808 }
809
810 u := dc.srv.getUser(username)
811 if u == nil {
812 return fmt.Errorf("unknown username %q", username)
813 }
814
815 done := make(chan error, 1)
816 u.events <- eventUserUpdate{
817 password: hashed,
818 admin: admin,
819 done: done,
820 }
821 if err := <-done; err != nil {
822 return err
823 }
824
825 sendServicePRIVMSG(dc, fmt.Sprintf("updated user %q", username))
826 } else {
827 // copy the user record because we'll mutate it
828 record := dc.user.User
829
830 if hashed != nil {
831 record.Password = *hashed
832 }
833 if realname != nil {
834 record.Realname = *realname
835 }
836 if admin != nil {
837 return fmt.Errorf("cannot update -admin of own user")
838 }
839
840 if err := dc.user.updateUser(&record); err != nil {
841 return err
842 }
843
844 sendServicePRIVMSG(dc, fmt.Sprintf("updated user %q", dc.user.Username))
845 }
846
847 return nil
848}
849
850func handleUserDelete(dc *downstreamConn, params []string) error {
851 if len(params) != 1 {
852 return fmt.Errorf("expected exactly one argument")
853 }
854 username := params[0]
855
856 u := dc.srv.getUser(username)
857 if u == nil {
858 return fmt.Errorf("unknown username %q", username)
859 }
860
861 u.stop()
862
863 if err := dc.srv.db.DeleteUser(u.ID); err != nil {
864 return fmt.Errorf("failed to delete user: %v", err)
865 }
866
867 sendServicePRIVMSG(dc, fmt.Sprintf("deleted user %q", username))
868 return nil
869}
870
871func handleServiceChannelStatus(dc *downstreamConn, params []string) error {
872 var defaultNetworkName string
873 if dc.network != nil {
874 defaultNetworkName = dc.network.GetName()
875 }
876
877 fs := newFlagSet()
878 networkName := fs.String("network", defaultNetworkName, "")
879
880 if err := fs.Parse(params); err != nil {
881 return err
882 }
883
884 n := 0
885
886 sendNetwork := func(net *network) {
887 var channels []*Channel
888 for _, entry := range net.channels.innerMap {
889 channels = append(channels, entry.value.(*Channel))
890 }
891
892 sort.Slice(channels, func(i, j int) bool {
893 return strings.ReplaceAll(channels[i].Name, "#", "") <
894 strings.ReplaceAll(channels[j].Name, "#", "")
895 })
896
897 for _, ch := range channels {
898 var uch *upstreamChannel
899 if net.conn != nil {
900 uch = net.conn.channels.Value(ch.Name)
901 }
902
903 name := ch.Name
904 if *networkName == "" {
905 name += "/" + net.GetName()
906 }
907
908 var status string
909 if uch != nil {
910 status = "joined"
911 } else if net.conn != nil {
912 status = "parted"
913 } else {
914 status = "disconnected"
915 }
916
917 if ch.Detached {
918 status += ", detached"
919 }
920
921 s := fmt.Sprintf("%v [%v]", name, status)
922 sendServicePRIVMSG(dc, s)
923
924 n++
925 }
926 }
927
928 if *networkName == "" {
929 dc.user.forEachNetwork(sendNetwork)
930 } else {
931 net := dc.user.getNetwork(*networkName)
932 if net == nil {
933 return fmt.Errorf("unknown network %q", *networkName)
934 }
935 sendNetwork(net)
936 }
937
938 if n == 0 {
939 sendServicePRIVMSG(dc, "No channel configured.")
940 }
941
942 return nil
943}
944
945type channelFlagSet struct {
946 *flag.FlagSet
947 RelayDetached, ReattachOn, DetachAfter, DetachOn *string
948}
949
950func newChannelFlagSet() *channelFlagSet {
951 fs := &channelFlagSet{FlagSet: newFlagSet()}
952 fs.Var(stringPtrFlag{&fs.RelayDetached}, "relay-detached", "")
953 fs.Var(stringPtrFlag{&fs.ReattachOn}, "reattach-on", "")
954 fs.Var(stringPtrFlag{&fs.DetachAfter}, "detach-after", "")
955 fs.Var(stringPtrFlag{&fs.DetachOn}, "detach-on", "")
956 return fs
957}
958
959func (fs *channelFlagSet) update(channel *Channel) error {
960 if fs.RelayDetached != nil {
961 filter, err := parseFilter(*fs.RelayDetached)
962 if err != nil {
963 return err
964 }
965 channel.RelayDetached = filter
966 }
967 if fs.ReattachOn != nil {
968 filter, err := parseFilter(*fs.ReattachOn)
969 if err != nil {
970 return err
971 }
972 channel.ReattachOn = filter
973 }
974 if fs.DetachAfter != nil {
975 dur, err := time.ParseDuration(*fs.DetachAfter)
976 if err != nil || dur < 0 {
977 return fmt.Errorf("unknown duration for -detach-after %q (duration format: 0, 300s, 22h30m, ...)", *fs.DetachAfter)
978 }
979 channel.DetachAfter = dur
980 }
981 if fs.DetachOn != nil {
982 filter, err := parseFilter(*fs.DetachOn)
983 if err != nil {
984 return err
985 }
986 channel.DetachOn = filter
987 }
988 return nil
989}
990
991func handleServiceChannelUpdate(dc *downstreamConn, params []string) error {
992 if len(params) < 1 {
993 return fmt.Errorf("expected at least one argument")
994 }
995 name := params[0]
996
997 fs := newChannelFlagSet()
998 if err := fs.Parse(params[1:]); err != nil {
999 return err
1000 }
1001
1002 uc, upstreamName, err := dc.unmarshalEntity(name)
1003 if err != nil {
1004 return fmt.Errorf("unknown channel %q", name)
1005 }
1006
1007 ch := uc.network.channels.Value(upstreamName)
1008 if ch == nil {
1009 return fmt.Errorf("unknown channel %q", name)
1010 }
1011
1012 if err := fs.update(ch); err != nil {
1013 return err
1014 }
1015
1016 uc.updateChannelAutoDetach(upstreamName)
1017
1018 if err := dc.srv.db.StoreChannel(uc.network.ID, ch); err != nil {
1019 return fmt.Errorf("failed to update channel: %v", err)
1020 }
1021
1022 sendServicePRIVMSG(dc, fmt.Sprintf("updated channel %q", name))
1023 return nil
1024}
1025
1026func handleServiceServerStatus(dc *downstreamConn, params []string) error {
1027 dbStats, err := dc.user.srv.db.Stats()
1028 if err != nil {
1029 return err
1030 }
1031 serverStats := dc.user.srv.Stats()
1032 sendServicePRIVMSG(dc, fmt.Sprintf("%v/%v users, %v downstreams, %v networks, %v channels", serverStats.Users, dbStats.Users, serverStats.Downstreams, dbStats.Networks, dbStats.Channels))
1033 return nil
1034}
1035
1036func handleServiceServerNotice(dc *downstreamConn, params []string) error {
1037 if len(params) != 1 {
1038 return fmt.Errorf("expected exactly one argument")
1039 }
1040 text := params[0]
1041
1042 dc.logger.Printf("broadcasting bouncer-wide NOTICE: %v", text)
1043
1044 broadcastMsg := &irc.Message{
1045 Prefix: servicePrefix,
1046 Command: "NOTICE",
1047 Params: []string{"$" + dc.srv.Hostname, text},
1048 }
1049 dc.srv.forEachUser(func(u *user) {
1050 u.events <- eventBroadcast{broadcastMsg}
1051 })
1052 return nil
1053}
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