1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
|
/*
* Copyright (c) 1998 Martin Husemann. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
* 4. Altered versions must be plainly marked as such, and must not be
* misrepresented as being the original software and/or documentation.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*---------------------------------------------------------------------------
*
* i4b daemon - network monitor server module
* ------------------------------------------
*
* $Id: monitor.c,v 1.6 1998/08/10 13:55:24 hm Exp $
*
* last edit-date: [Fri Jul 17 18:07:00 1998]
*
* -mh created
*
*---------------------------------------------------------------------------*/
#include "isdnd.h"
#ifndef I4B_EXTERNAL_MONITOR
/* dummy version of routines needed by config file parser
* (config files should be valid with and without external montioring
* support compiled into the daemon) */
void monitor_clear_rights()
{ }
int monitor_start_rights(const char *clientspec)
{ return I4BMAR_OK; }
void monitor_add_rights(int rights_mask)
{ }
void monitor_fixup_rights()
{ }
#else
#include "monitor.h"
#include "vararray.h"
#include <sys/socket.h>
#include <sys/un.h>
#ifndef I4B_NOTCPIP_MONITOR
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#endif
VARA_DECL(struct monitor_rights) rights = VARA_INITIALIZER;
#define INITIAL_RIGHTS_ALLOC 10 /* most users will have one or two entries */
static int local_rights = -1; /* index of entry for local socket, -1 if none */
/* for each active monitor connection we have one of this: */
struct monitor_connection {
int sock; /* socket for this connection */
int rights; /* active rights for this connection */
int events; /* bitmask of events client is interested in */
};
static VARA_DECL(struct monitor_connection) connections = VARA_INITIALIZER;
#define INITIAL_CONNECTIONS_ALLOC 30 /* high guess */
/* derive channel number from config pointer */
#define CHNO(cfgp) (((cfgp)->isdncontrollerused*2) + (cfgp)->isdnchannelused)
/* local prototypes */
static int cmp_rights(const void *a, const void *b);
static int monitor_command(int con_index, int fd, int rights);
static void cmd_dump_rights(int fd, int rights, BYTE *cmd);
static void cmd_dump_mcons(int fd, int rights, BYTE *cmd);
static void cmd_reread_cfg(int fd, int rights, BYTE *cmd);
static void cmd_hangup(int fd, int rights, BYTE *cmd);
static void monitor_broadcast(int mask, const BYTE *pkt, size_t bytes);
static int anybody(int mask);
/*
* Due to the way we structure config files, the rights for an external
* monitor might be stated in multiple steps. First a call to
* monitor_start_rights opens an entry. Further (optional) calls to
* montior_add_rights assemble additional rights for this "current"
* entry. When closing the sys-file section of the config file, the
* "current" entry becomes invalid.
*/
static int cur_add_entry = -1;
/*
* Initialize the monitor server module. This affects only active
* connections, the access rights are not modified here!
*/
void monitor_init()
{
accepted = 0;
VARA_EMPTY(connections);
}
/*
* Prepare for exit
*/
void monitor_exit()
{
int i;
/* Close all open connections. */
VARA_FOREACH(connections, i)
close(VARA_AT(connections, i).sock);
/* Remove their descriptions */
VARA_EMPTY(connections);
}
/*
* Initialize access rights. No active connections are affected!
*/
void monitor_clear_rights()
{
VARA_EMPTY(rights);
cur_add_entry = -1;
}
/*
* Add an entry to the access lists. The clientspec either is
* the name of the local socket or a host- or networkname or
* numeric ip/host-bit-len spec.
*/
int monitor_start_rights(const char *clientspec)
{
int i;
struct monitor_rights r;
/* initialize the new rights entry */
memset(&r, 0, sizeof r);
/* check clientspec */
if (*clientspec == '/') {
struct sockaddr_un sa;
/* this is a local socket spec, check if we already have one */
if (VARA_VALID(rights, local_rights))
return I4BMAR_DUP;
/* does it fit in a local socket address? */
if (strlen(clientspec) > sizeof sa.sun_path)
return I4BMAR_LENGTH;
r.local = 1;
strcpy(r.name, clientspec);
#ifndef I4B_NOTCPIP_MONITOR
} else {
/* remote entry, parse host/net and cidr */
char hostname[FILENAME_MAX];
char *p;
p = strchr(clientspec, '/');
if (!p) {
struct hostent *host;
u_int32_t hn;
/* must be a host spec */
r.mask = ~0;
host = gethostbyname(clientspec);
if (!host)
return I4BMAR_NOIP;
memcpy(&hn, host->h_addr_list[0], sizeof hn);
r.net = (u_int32_t)ntohl(hn);
} else if (p[1]) {
/* must be net/cidr spec */
int l;
struct netent *net;
u_int32_t s = ~0U;
int num = strtol(p+1, NULL, 10);
if (num < 0 || num > 32)
return I4BMAR_CIDR;
s >>= num;
s ^= ~0U;
l = p - clientspec;
if (l >= sizeof hostname)
return I4BMAR_LENGTH;
strncpy(hostname, clientspec, l);
hostname[l] = '\0';
net = getnetbyname(hostname);
if (net == NULL)
r.net = (u_int32_t)inet_network(hostname);
else
r.net = (u_int32_t)net->n_net;
r.mask = s;
r.net &= s;
} else
return I4BMAR_CIDR;
/* check for duplicate entry */
VARA_FOREACH(rights, i)
if (VARA_AT(rights, i).mask == r.mask &&
VARA_AT(rights, i).net == r.net &&
VARA_AT(rights, i).local == r.local)
return I4BMAR_DUP;
#endif
}
r.rights = 0;
/* entry ok, add it to the collection */
cur_add_entry = i = VARA_NUM(rights);
VARA_ADD_AT(rights, i, struct monitor_rights, INITIAL_RIGHTS_ALLOC);
memcpy(&VARA_AT(rights, i), &r, sizeof r);
if (r.local)
local_rights = i;
log(LL_DBG, "system: monitor = %s", clientspec);
return I4BMAR_OK;
}
/*
* Add rights to the currently constructed entry - if any.
*/
void monitor_add_rights(int rights_mask)
{
if (cur_add_entry < 0) return; /* noone under construction */
VARA_AT(rights, cur_add_entry).rights |= rights_mask;
log(LL_DBG, "system: monitor-access = 0x%x", rights_mask);
}
/*
* All rights have been added now. Sort the to get most specific
* host/net masks first, so we can travel the list and use the first
* match for actual rights.
*/
void monitor_fixup_rights()
{
int i;
/* no more rights may be added to the current entry */
cur_add_entry = -1;
/* sort the rights array */
qsort(VARA_PTR(rights), VARA_NUM(rights), sizeof(struct monitor_rights), cmp_rights);
/* now the local entry may have moved, update its index */
if (VARA_VALID(rights, local_rights)) {
local_rights = -1;
VARA_FOREACH(rights, i) {
if (VARA_AT(rights, i).local) {
local_rights = i;
break;
}
}
}
}
/* comparator for rights */
static int cmp_rights(const void *a, const void *b)
{
u_int32_t mask;
struct monitor_rights const * pa = (struct monitor_rights const*)a;
struct monitor_rights const * pb = (struct monitor_rights const*)b;
/* local sorts first */
if (pa->local)
return -1;
/* which is the less specific netmask? */
mask = pa->mask;
if ((pb->mask & mask) == 0)
mask = pb->mask;
/* are the entries disjunct? */
if ((pa->net & mask) != (pb->net & mask)) {
/* simply compare net part of address */
return ((pa->net & mask) < (pb->net & mask)) ? -1 : 1;
}
/* One entry is part of the others net. We already now "mask" is
* the netmask of the less specific (i.e. greater) one */
return (pa->mask == mask) ? 1 : -1;
}
#ifndef I4B_NOTCPIP_MONITOR
/*
* Check if access rights for a remote socket are specified and
* create this socket. Return -1 otherwise.
*/
int monitor_create_remote_socket(int portno)
{
struct sockaddr_in sa;
int val;
int remotesockfd = socket(AF_INET, SOCK_STREAM, 0);
if (remotesockfd == -1) {
log(LL_ERR, "could not create remote monitor socket, errno = %d", errno);
exit(1);
}
val = 1;
if (setsockopt(remotesockfd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof val)) {
log(LL_ERR, "could not setsockopt, errno = %d", errno);
exit(1);
}
memset(&sa, 0, sizeof sa);
sa.sin_len = sizeof sa;
sa.sin_family = AF_INET;
sa.sin_port = htons(portno);
sa.sin_addr.s_addr = htonl(INADDR_ANY);
if (bind(remotesockfd, (struct sockaddr *)&sa, sizeof sa) == -1) {
log(LL_ERR, "could not bind remote monitor socket to port %d, errno = %d", portno, errno);
exit(1);
}
if (listen(remotesockfd, 0)) {
log(LL_ERR, "could not listen on monitor socket, errno = %d", errno);
exit(1);
}
return remotesockfd;
}
#endif
/*
* Check if access rights for a local socket are specified and
* create this socket. Return -1 otherwise.
*/
int monitor_create_local_socket()
{
int s;
struct sockaddr_un sa;
/* check for a local entry */
if (!VARA_VALID(rights, local_rights))
return -1;
/* create and setup socket */
s = socket(AF_LOCAL, SOCK_STREAM, 0);
if (s == -1) {
log(LL_ERR, "could not create local monitor socket, errno = %d", errno);
exit(1);
}
unlink(VARA_AT(rights, local_rights).name);
memset(&sa, 0, sizeof sa);
sa.sun_len = sizeof sa;
sa.sun_family = AF_LOCAL;
strcpy(sa.sun_path, VARA_AT(rights, local_rights).name);
if (bind(s, (struct sockaddr *)&sa, sizeof sa)) {
log(LL_ERR, "could not bind local monitor socket [%s], errno = %d", VARA_AT(rights, local_rights).name, errno);
exit(1);
}
if (listen(s, 0)) {
log(LL_ERR, "could not listen on local monitor socket, errno = %d", errno);
exit(1);
}
return s;
}
/*
* Prepare a fd_set for a select call. Add all our local
* filedescriptors to the set, increment max_fd if appropriate.
*/
void monitor_prepselect(fd_set *selset, int *max_fd)
{
int i;
VARA_FOREACH(connections, i) {
int fd = VARA_AT(connections, i).sock;
if (fd > *max_fd)
*max_fd = fd;
FD_SET(fd, selset);
}
}
/*
* Check if the result from a select call indicates something
* to do for us.
*/
void monitor_handle_input(fd_set *selset)
{
int i;
VARA_FOREACH(connections, i) {
int fd = VARA_AT(connections, i).sock;
if (FD_ISSET(fd, selset)) {
/* handle command from this client */
if (monitor_command(i, fd, VARA_AT(connections, i).rights) != 0) {
/* broken or closed connection */
log(LL_DBG, "monitor connection #%d closed", i);
VARA_REMOVEAT(connections, i);
i--;
}
}
}
/* all connections gone? */
if (VARA_NUM(connections) == 0)
accepted = 0;
}
/*
* Try new incoming connection on the given socket.
* Setup client descriptor and send initial data.
*/
void monitor_handle_connect(int sockfd, int is_local)
{
struct monitor_connection *con;
#ifndef I4B_NOTCPIP_MONITOR
struct sockaddr_in ia;
u_int32_t ha = 0;
#endif
struct sockaddr_un ua;
BYTE idata[I4B_MON_IDATA_SIZE];
int fd = -1, s, i, r_mask;
char source[FILENAME_MAX];
/* accept the connection */
if (is_local) {
s = sizeof ua;
fd = accept(sockfd, (struct sockaddr *)&ua, &s);
strcpy(source, "local connection");
#ifndef I4B_NOTCPIP_MONITOR
} else {
s = sizeof ia;
fd = accept(sockfd, (struct sockaddr *)&ia, &s);
snprintf(source, sizeof source, "tcp/ip connection from %s\n",
inet_ntoa(ia.sin_addr));
memcpy(&ha, &ia.sin_addr.s_addr, sizeof ha);
ha = ntohl(ha);
#endif
}
/* check the access rights of this connection */
r_mask = 0;
VARA_FOREACH(rights, i) {
struct monitor_rights *r = &VARA_AT(rights, i);
if (r->local) {
if (is_local) {
r_mask = r->rights;
break;
}
#ifndef I4B_NOTCPIP_MONITOR
} else {
if ((ha & r->mask) == r->net) {
r_mask = r->rights;
break;
}
#endif
}
}
if (r_mask == 0) {
/* no rights - go away */
log(LL_DBG, "monitor access denied: %s", source);
close(fd);
return;
}
accepted = 1;
i = VARA_NUM(connections);
VARA_ADD_AT(connections, i, struct monitor_connection, INITIAL_CONNECTIONS_ALLOC);
con = &VARA_AT(connections, i);
memset(con, 0, sizeof *con);
con->sock = fd;
con->rights = r_mask;
log(LL_DBG, "monitor access granted, rights = %x, #%d, %s",
r_mask, i, source);
/* send initial data */
I4B_PREP_CMD(idata, I4B_MON_IDATA_CODE);
I4B_PUT_2B(idata, I4B_MON_IDATA_VERSMAJOR, MPROT_VERSION);
I4B_PUT_2B(idata, I4B_MON_IDATA_VERSMINOR, MPROT_REL);
I4B_PUT_2B(idata, I4B_MON_IDATA_NUMCTRL, ncontroller);
I4B_PUT_4B(idata, I4B_MON_IDATA_CLACCESS, r_mask);
write(fd, idata, sizeof idata);
for (i = 0; i < ncontroller; i++) {
BYTE ictrl[I4B_MON_ICTRL_SIZE];
I4B_PREP_CMD(ictrl, I4B_MON_ICTRL_CODE);
I4B_PUT_STR(ictrl, I4B_MON_ICTRL_NAME, name_of_controller(isdn_ctrl_tab[i].ctrl_type, isdn_ctrl_tab[i].card_type));
I4B_PUT_2B(ictrl, I4B_MON_ICTRL_BUSID, 0);
I4B_PUT_4B(ictrl, I4B_MON_ICTRL_FLAGS, 0);
I4B_PUT_4B(ictrl, I4B_MON_ICTRL_NCHAN, 2);
write(fd, ictrl, sizeof ictrl);
}
}
/* dump all monitor rights */
static void cmd_dump_rights(int fd, int r_mask, BYTE *cmd)
{
int i;
BYTE drini[I4B_MON_DRINI_SIZE];
BYTE dr[I4B_MON_DR_SIZE];
I4B_PREP_EVNT(drini, I4B_MON_DRINI_CODE);
I4B_PUT_2B(drini, I4B_MON_DRINI_COUNT, VARA_NUM(rights));
write(fd, drini, sizeof drini);
VARA_FOREACH(rights, i) {
I4B_PREP_EVNT(dr, I4B_MON_DR_CODE);
I4B_PUT_4B(dr, I4B_MON_DR_RIGHTS, VARA_AT(rights, i).rights);
I4B_PUT_4B(dr, I4B_MON_DR_NET, VARA_AT(rights, i).net);
I4B_PUT_4B(dr, I4B_MON_DR_MASK, VARA_AT(rights, i).mask);
I4B_PUT_1B(dr, I4B_MON_DR_LOCAL, VARA_AT(rights, i).local);
write(fd, dr, sizeof dr);
}
}
/* rescan config file */
static void cmd_reread_cfg(int fd, int rights, BYTE *cmd)
{
rereadconfig(42);
}
/* drop one connection */
static void cmd_hangup(int fd, int rights, BYTE *cmd)
{
int channel = I4B_GET_4B(cmd, I4B_MON_HANGUP_CHANNEL);
hangup_channel(channel);
}
/* dump all active monitor connections */
static void cmd_dump_mcons(int fd, int rights, BYTE *cmd)
{
int i;
BYTE dcini[I4B_MON_DCINI_SIZE];
I4B_PREP_EVNT(dcini, I4B_MON_DCINI_CODE);
I4B_PUT_2B(dcini, I4B_MON_DCINI_COUNT, VARA_NUM(connections));
write(fd, dcini, sizeof dcini);
VARA_FOREACH(connections, i) {
#ifndef I4B_NOTCPIP_MONITOR
int namelen;
struct sockaddr_in name;
#endif
BYTE dc[I4B_MON_DC_SIZE];
I4B_PREP_EVNT(dc, I4B_MON_DC_CODE);
I4B_PUT_4B(dc, I4B_MON_DC_RIGHTS, VARA_AT(connections, i).rights);
#ifndef I4B_NOTCPIP_MONITOR
namelen = sizeof name;
if (getpeername(VARA_AT(connections, i).sock, (struct sockaddr*)&name, &namelen) == 0)
memcpy(dc+I4B_MON_DC_WHO, &name.sin_addr, sizeof name.sin_addr);
#endif
write(fd, dc, sizeof dc);
}
}
/*
* Handle a command from the given socket. The client
* has rights as specified in the rights parameter.
* Return non-zero if connection is closed.
*/
static int monitor_command(int con_index, int fd, int rights)
{
char cmd[I4B_MAX_MON_CLIENT_CMD];
u_int code;
/* command dispatch table */
typedef void (*cmd_func_t)(int fd, int rights, BYTE *cmd);
static struct {
cmd_func_t call; /* function to execute */
u_int rights; /* necessary rights */
} cmd_tab[] =
{
/* 0 */ { NULL, 0 },
/* 1 */ { cmd_dump_rights, I4B_CA_COMMAND_FULL },
/* 2 */ { cmd_dump_mcons, I4B_CA_COMMAND_FULL },
/* 3 */ { cmd_reread_cfg, I4B_CA_COMMAND_FULL },
/* 4 */ { cmd_hangup, I4B_CA_COMMAND_FULL },
};
#define NUMCMD (sizeof cmd_tab / sizeof cmd_tab[0])
u_long u;
int bytes;
/* Network transfer may deliver two or more packets concatenated.
* Peek at the header and read only one event at a time... */
ioctl(fd, FIONREAD, &u);
if (u < I4B_MON_CMD_HDR) {
if (u == 0) {
/* socket closed by peer */
close(fd);
return 1;
}
return 0; /* not enough data there yet */
}
bytes = recv(fd, cmd, I4B_MON_CMD_HDR, MSG_PEEK);
if (bytes < I4B_MON_CMD_HDR)
return 0; /* errh? something must be wrong... */
bytes = I4B_GET_2B(cmd, I4B_MON_CMD_LEN);
if (bytes >= sizeof cmd) {
close(fd);
log(LL_ERR, "garbage on monitor connection #%d, closing it", con_index);
return 1;
}
/* now we know the size, it fits, so lets read it! */
if (read(fd, cmd, bytes) <= 0) {
close(fd);
return 1;
}
/* decode command */
code = I4B_GET_2B(cmd, I4B_MON_CMD);
/* special case: may modify our connection descriptor, is
* beyound all rights checks */
if (code == I4B_MON_CCMD_SETMASK) {
/*
u_int major = I4B_GET_2B(cmd, I4B_MON_ICLIENT_VERMAJOR);
u_int minor = I4B_GET_2B(cmd, I4B_MON_ICLIENT_VERMINOR);
*/
int events = I4B_GET_4B(cmd, I4B_MON_ICLIENT_EVENTS);
VARA_AT(connections, con_index).events = events & rights;
return 0;
}
if (code < 0 || code >= NUMCMD) {
log(LL_ERR, "illegal command from client #%d: code = %d\n",
con_index, code);
return 0;
}
if (cmd_tab[code].call == NULL)
return 0;
if ((cmd_tab[code].rights & rights) == cmd_tab[code].rights)
cmd_tab[code].call(fd, rights, cmd);
return 0;
}
/*
* Check if somebody would receive an event with this mask.
* We are lazy and try to avoid assembling unneccesary packets.
* Return 0 if no one interested, nonzero otherwise.
*/
static int anybody(int mask)
{
int i;
VARA_FOREACH(connections, i)
if ((VARA_AT(connections, i).events & mask) == mask)
return 1;
return 0;
}
/*
* Send an event to every connection interested in this kind of
* event
*/
static void monitor_broadcast(int mask, const BYTE *pkt, size_t bytes)
{
int i;
VARA_FOREACH(connections, i) {
if ((VARA_AT(connections, i).events & mask) == mask) {
int fd = VARA_AT(connections, i).sock;
write(fd, pkt, bytes);
}
}
}
/*
* Post a logfile event
*/
void monitor_evnt_log(int prio, const char * what, const char * msg)
{
BYTE evnt[I4B_MON_LOGEVNT_SIZE];
time_t now;
if (!anybody(I4B_CA_EVNT_I4B)) return;
time(&now);
I4B_PREP_EVNT(evnt, I4B_MON_LOGEVNT_CODE);
I4B_PUT_4B(evnt, I4B_MON_LOGEVNT_TSTAMP, (long)now);
I4B_PUT_4B(evnt, I4B_MON_LOGEVNT_PRIO, prio);
I4B_PUT_STR(evnt, I4B_MON_LOGEVNT_WHAT, what);
I4B_PUT_STR(evnt, I4B_MON_LOGEVNT_MSG, msg);
monitor_broadcast(I4B_CA_EVNT_I4B, evnt, sizeof evnt);
}
/*
* Post a charging event on the connection described
* by the given config entry.
*/
void monitor_evnt_charge(cfg_entry_t *cep, int units, int estimate)
{
int chno = CHNO(cep);
int mask = (cep->direction == DIR_IN) ? I4B_CA_EVNT_CALLIN : I4B_CA_EVNT_CALLOUT;
time_t now;
BYTE evnt[I4B_MON_CHRG_SIZE];
if (!anybody(mask)) return;
time(&now);
I4B_PREP_EVNT(evnt, I4B_MON_CHRG_CODE);
I4B_PUT_4B(evnt, I4B_MON_CHRG_TSTAMP, (long)now);
I4B_PUT_4B(evnt, I4B_MON_CHRG_CHANNEL, chno);
I4B_PUT_4B(evnt, I4B_MON_CHRG_UNITS, units);
I4B_PUT_4B(evnt, I4B_MON_CHRG_ESTIMATED, estimate ? 1 : 0);
monitor_broadcast(mask, evnt, sizeof evnt);
}
/*
* Post a connection event
*/
void monitor_evnt_connect(cfg_entry_t *cep)
{
BYTE evnt[I4B_MON_CONNECT_SIZE];
char devname[I4B_MAX_MON_STRING];
int chno = CHNO(cep);
int mask = (cep->direction == DIR_IN) ? I4B_CA_EVNT_CALLIN : I4B_CA_EVNT_CALLOUT;
time_t now;
if (!anybody(mask)) return;
time(&now);
snprintf(devname, sizeof devname, "%s%d", bdrivername(cep->usrdevicename), cep->usrdeviceunit);
I4B_PREP_EVNT(evnt, I4B_MON_CONNECT_CODE);
I4B_PUT_4B(evnt, I4B_MON_CONNECT_TSTAMP, (long)now);
I4B_PUT_4B(evnt, I4B_MON_CONNECT_DIR, cep->direction == DIR_OUT ? 1 : 0);
I4B_PUT_4B(evnt, I4B_MON_CONNECT_CHANNEL, chno);
I4B_PUT_STR(evnt, I4B_MON_CONNECT_CFGNAME, cep->name);
I4B_PUT_STR(evnt, I4B_MON_CONNECT_DEVNAME, devname);
I4B_PUT_STR(evnt, I4B_MON_CONNECT_REMPHONE, cep->real_phone_incoming);
I4B_PUT_STR(evnt, I4B_MON_CONNECT_LOCPHONE, cep->remote_phone_dialout);
monitor_broadcast(mask, evnt, sizeof evnt);
}
/*
* Post a disconnect event
*/
void monitor_evnt_disconnect(cfg_entry_t *cep)
{
BYTE evnt[I4B_MON_DISCONNECT_SIZE];
int chno = CHNO(cep);
int mask = (cep->direction == DIR_IN) ? I4B_CA_EVNT_CALLIN : I4B_CA_EVNT_CALLOUT;
time_t now;
if (!anybody(mask)) return;
time(&now);
I4B_PREP_EVNT(evnt, I4B_MON_DISCONNECT_CODE);
I4B_PUT_4B(evnt, I4B_MON_DISCONNECT_TSTAMP, (long)now);
I4B_PUT_4B(evnt, I4B_MON_DISCONNECT_CHANNEL, chno);
monitor_broadcast(mask, evnt, sizeof evnt);
}
/*
* Post an up/down event
*/
void monitor_evnt_updown(cfg_entry_t *cep, int up)
{
BYTE evnt[I4B_MON_UPDOWN_SIZE];
int chno = CHNO(cep);
int mask = (cep->direction == DIR_IN) ? I4B_CA_EVNT_CALLIN : I4B_CA_EVNT_CALLOUT;
time_t now;
if (!anybody(mask)) return;
time(&now);
I4B_PREP_EVNT(evnt, I4B_MON_UPDOWN_CODE);
I4B_PUT_4B(evnt, I4B_MON_UPDOWN_TSTAMP, (long)now);
I4B_PUT_4B(evnt, I4B_MON_UPDOWN_CHANNEL, chno);
I4B_PUT_4B(evnt, I4B_MON_UPDOWN_ISUP, up);
monitor_broadcast(mask, evnt, sizeof evnt);
}
void hangup_channel(int channel)
{
int i;
cfg_entry_t * cep = NULL;
for (i = 0; i < ncontroller; i++)
{
if(isdn_ctrl_tab[i].state != CTRL_UP)
continue;
if(isdn_ctrl_tab[i].stateb1 != CHAN_IDLE)
{
cep = get_cep_by_cc(i, 0);
if (cep != NULL && CHNO(cep) == channel)
goto found;
}
if(isdn_ctrl_tab[i].stateb2 != CHAN_IDLE)
{
cep = get_cep_by_cc(i, 1);
if (cep != NULL && CHNO(cep) == channel)
goto found;
}
}
/* not found */
return;
found:
cep->hangup = 1;
return;
}
#endif /* I4B_EXTERNAL_MONITOR */
|