summaryrefslogtreecommitdiffstats
path: root/apps/plugins/pdbox/PDa/extra/dumpOSC.c
blob: 28b0d8223eb608d8a408cbc69ac740fc515fb0d4 (plain)
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
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
Written by Matt Wright and Adrian Freed, The Center for New Music and
Audio Technologies, University of California, Berkeley.  Copyright (c)
1992,93,94,95,96,97,98,99,2000,01,02,03,04 The Regents of the University of
California (Regents).

Permission to use, copy, modify, distribute, and distribute modified versions
of this software and its documentation without fee and without a signed
licensing agreement, is hereby granted, provided that the above copyright
notice, this paragraph and the following two paragraphs appear in all copies,
modifications, and distributions.

IN NO EVENT SHALL REGENTS BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,
SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING
OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF REGENTS HAS
BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

REGENTS SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. THE SOFTWARE AND ACCOMPANYING DOCUMENTATION, IF ANY, PROVIDED
HEREUNDER IS PROVIDED "AS IS". REGENTS HAS NO OBLIGATION TO PROVIDE
MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.


The OSC webpage is http://cnmat.cnmat.berkeley.edu/OpenSoundControl
*/


  /* 

     dumpOSC.c
	server that displays OpenSoundControl messages sent to it
	for debugging client udp and UNIX protocol

     by Matt Wright, 6/3/97
       modified from dumpSC.c, by Matt Wright and Adrian Freed

     version 0.2: Added "-silent" option a.k.a. "-quiet"

     version 0.3: Incorporated patches from Nicola Bernardini to make
       things Linux-friendly.  Also added ntohl() in the right places
       to support little-endian architectures.
 


	compile:
		cc -o dumpOSC dumpOSC.c

	to-do:

	    More robustness in saying exactly what's wrong with ill-formed
	    messages.  (If they don't make sense, show exactly what was
	    received.)

	    Time-based features: print time-received for each packet

	    Clean up to separate OSC parsing code from socket/select stuff

	pd: branched from http://www.cnmat.berkeley.edu/OpenSoundControl/src/dumpOSC/dumpOSC.c
	-------------
	-- added pd functions
	-- socket is made differently than original via pd mechanisms
	-- tweaks for Win32    www.zeggz.com/raf	13-April-2002
	-- the OSX changes from cnmat didnt make it here yet but this compiles
	   on OSX anyway.
	
*/

#if HAVE_CONFIG_H 
#include <config.h> 
#endif

#include "m_pd.h"
//#include "m_imp.h"
#include "s_stuff.h"

/* declarations */

// typedef void (*t_fdpollfn)(void *ptr, int fd);
void sys_addpollfn(int fd, t_fdpollfn fn, void *ptr);


#if defined(__sgi) || defined(__linux) || defined(WIN32) || defined(__APPLE__)

#ifdef WIN32
	#include "OSC-common.h"
	#include <winsock2.h>	
	#include <string.h>
	#include <stdlib.h>
	#include <fcntl.h>
	#include <sys/types.h>
	#include <sys/stat.h>
	#include <ctype.h>
	#include <signal.h>
#else
	#include <stdio.h>
	#include <string.h>
	#include <stdlib.h>
	#include <unistd.h>
	#include <fcntl.h>
	#include <sys/types.h>
	#include <sys/stat.h>
	#include <netinet/in.h>
	#include <rpc/rpc.h>
	#include <sys/socket.h>
	#include <sys/un.h>
	#include <sys/times.h>
	#include <sys/param.h>
	#include <sys/time.h>
	#include <sys/ioctl.h>
	#include <ctype.h>
	#include <arpa/inet.h>
	#include <netdb.h>
	#include <pwd.h>
	#include <signal.h>
	#include <grp.h>
	#include <sys/file.h>
	//#include <sys/prctl.h>

	#ifdef NEED_SCHEDCTL_AND_LOCK
	#include <sys/schedctl.h>
	#include <sys/lock.h>
	#endif
#endif


char *htm_error_string;
typedef int Boolean;
typedef void *OBJ;

typedef struct ClientAddressStruct {
        struct sockaddr_in  cl_addr;
        int clilen;
        int sockfd;
} *ClientAddr;

typedef unsigned long long osc_time_t;

Boolean ShowBytes = FALSE;
Boolean Silent = FALSE;

/* Declarations */
#ifndef WIN32
static int unixinitudp(int chan);
#endif

static int initudp(int chan);
static void closeudp(int sockfd);
Boolean ClientReply(int packetsize, void *packet, int socketfd, 
	void *clientaddresspointer, int clientaddressbufferlength);
void sgi_CleanExit(void);
Boolean sgi_HaveToQuit(void);
int RegisterPollingDevice(int fd, void (*callbackfunction)(int , void *), void *dummy);
static void catch_sigint();
static int Synthmessage(char *m, int n, void *clientdesc, int clientdesclength, int fd) ;
char *DataAfterAlignedString(char *string, char *boundary) ;
Boolean IsNiceString(char *string, char *boundary) ;
void complain(char *s, ...);

#define MAXMESG 32768
static char mbuf[MAXMESG];

/* ----------------------------- dumpOSC ------------------------- */

#define MAXOUTAT 50

static t_class *dumpOSC_class;

typedef struct _dumpOSC
{
  t_object x_obj;
  t_outlet *x_msgout;
  t_outlet *x_connectout;
  t_atom x_outat[MAXOUTAT];
  int x_outatc;
  t_binbuf *x_b;
  int x_connectsocket;
  int x_nconnections;
  int x_udp;
  struct sockaddr_in x_server;
  int x_clilen;
} t_dumpOSC;

void dumpOSC_ParsePacket(t_dumpOSC *x, char *buf, int n, ClientAddr returnAddr);
Boolean dumpOSC_SendReply(char *buf, int n, void *clientDesc, int clientDescLenght, int fd);
static void dumpOSC_Smessage(t_dumpOSC *x, char *address, void *v, int n, ClientAddr returnAddr);
static void dumpOSC_PrintTypeTaggedArgs(t_dumpOSC *x, void *v, int n);
static void dumpOSC_PrintHeuristicallyTypeGuessedArgs(t_dumpOSC *x, void *v, int n, int skipComma);

static void dumpOSC_read(t_dumpOSC *x, int sockfd) {
  int clilen = x->x_clilen;
  int n;
  struct ClientAddressStruct ras;
  ClientAddr ra = &ras;
  
  //catchupflag= FALSE;
    
/*   if (ShowBytes) { */
/*     int i; */
/*     printf("%d byte message:\n", n); */
/*     for (i = 0; i < n; ++i) { */
/*       printf(" %x (%c)\t", m[i], m[i]); */
/*       if (i%4 == 3) printf("\n"); */
/*     } */
/*     printf("\n"); */
/*   } */

    //    return catchupflag;
  //struct sockaddr_in x->x_server;
  //while( (n = recvfrom(sockfd, mbuf, MAXMESG, 0, &cl_addr, &clilen)) >0) 
  //  while((

	#ifdef WIN32
	if ((n = recvfrom(sockfd, mbuf, MAXMESG, 0, (SOCKADDR*)&x->x_server, &clilen)) >0)
	#else
	if ((n = recvfrom(sockfd, mbuf, MAXMESG, 0, (struct sockaddr *)&x->x_server, &clilen)) >0)
	#endif 
	{
		//int r;
		ras.cl_addr = *((struct sockaddr_in *) &x->x_server);
		ras.clilen = x->x_clilen;
		ras.sockfd = x->x_connectsocket;

		#ifdef DEBUG
		printf("dumpOSC_read: received UDP packet of length %d\n",  n);
		#endif
		
		if(!dumpOSC_SendReply(mbuf, n, &x->x_server, clilen, sockfd))
		{
			dumpOSC_ParsePacket(x, mbuf, n, ra);
		}
		//r = Synthmessage(mbuf, n, &x->x_server, clilen, sockfd);
		//post ("%d", r);
		//outlet_anything(x->x_msgout, at[msg].a_w.w_symbol,
		//		      emsg-msg-1, at + msg + 1);
		//      outlet_list(x->x_msgout, 0, n, mbuf);
		//if( sgi_HaveToQuit()) goto out;
		//if(r>0) goto back;
		//clilen = maxclilen;
	}  
}

static void *dumpOSC_new(t_symbol *compatflag,
			 t_floatarg fportno) {
  t_dumpOSC *x;
  struct sockaddr_in server;
  int clilen=sizeof(server);
  int sockfd;
  int portno=fportno;
  int udp = 1;

  //x->x_b = binbuf_new();
  //x->x_outat = binbuf_getvec(x->x_b);

  //{{raf}} pointer not valid yet...moving this down
  //x->x_outatc = 0;   {{raf}}

  /* create a socket */
  if ((sockfd = socket(AF_INET, (udp ? SOCK_DGRAM : SOCK_STREAM), 0)) == -1)
    {
      sys_sockerror("socket");
      return (0);
    }

  server.sin_family = AF_INET;
  server.sin_addr.s_addr = INADDR_ANY;
  /* assign server port number */
  server.sin_port = htons((u_short)portno);
  /* name the socket */
  if (bind(sockfd, (struct sockaddr *)&server, sizeof(server)) < 0)
    {
      sys_sockerror("bind");
      sys_closesocket(sockfd);
      return (0);
    }

  x = (t_dumpOSC *)pd_new(dumpOSC_class);
  x->x_outatc = 0;				// {{raf}} now pointer is valid (less invalid)

  x->x_msgout = outlet_new(&x->x_obj, &s_anything);
  
  // if (udp)	    /* datagram protocol */
    {
      
      sys_addpollfn(sockfd, (t_fdpollfn)dumpOSC_read, x);
      x->x_connectout = 0;
    }
  //    else    	/* streaming protocol */
  /*     { */
  /* 	if (listen(sockfd, 5) < 0) */
  /* 	{ */
  /*     	    sys_sockerror("listen"); */
  /*     	    sys_closesocket(sockfd); */
  /* 	    sockfd = -1; */
  /* 	} */
  /*     	else */
  /* 	{ */
  /* 	    sys_addpollfn(sockfd, (t_fdpollfn)dumpOSC_connectpoll, x); */
  /*     	    x->x_connectout = outlet_new(&x->x_obj, &s_float); */
  /* 	} */
  /*     } */
  
  x->x_connectsocket = sockfd;
  x->x_server = server;
  x->x_clilen = clilen;
  x->x_nconnections = 0;
  x->x_udp = udp;
  
  return (x);
}

static void dumpOSC_free(t_dumpOSC *x)
{
    	/* LATER make me clean up open connections */
    if (x->x_connectsocket >= 0)
    {
    	sys_rmpollfn(x->x_connectsocket);
    	sys_closesocket(x->x_connectsocket);
    }
}

#ifdef WIN32
OSC_API void dumpOSC_setup(void)
#else
void dumpOSC_setup(void)
#endif
{
    dumpOSC_class = class_new(gensym("dumpOSC"),
    	(t_newmethod)dumpOSC_new, (t_method)dumpOSC_free,
    	sizeof(t_dumpOSC), CLASS_NOINLET, A_DEFFLOAT, A_DEFFLOAT, 
	    A_DEFSYM, 0);
    class_sethelpsymbol(dumpOSC_class, gensym("dumpOSC-help.pd"));
}


#ifndef WIN32
	#define UNIXDG_PATH "/tmp/htm"
	#define UNIXDG_TMP "/tmp/htm.XXXXXX"
	static int unixinitudp(int chan)
	{
		struct sockaddr_un serv_addr;
		int  sockfd;
		
		if((sockfd = socket(AF_UNIX, SOCK_DGRAM, 0)) < 0)
				return sockfd;
		
		bzero((char *)&serv_addr, sizeof(serv_addr));
		serv_addr.sun_family = AF_UNIX;
		strcpy(serv_addr.sun_path, UNIXDG_PATH);
		sprintf(serv_addr.sun_path+strlen(serv_addr.sun_path), "%d", chan);
		 unlink(serv_addr.sun_path);
		if(bind(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr.sun_family)+strlen(serv_addr.sun_path)) < 0)
		{
			perror("unable to  bind\n");
			return -1;
		}

		fcntl(sockfd, F_SETFL, FNDELAY); 
		return sockfd;
	}
#endif	// #ifndef WIN32



static int initudp(int chan)
{

#ifdef WIN32
	struct sockaddr_in serv_addr;
	unsigned int sockfd;
	ULONG nonBlocking = (ULONG) TRUE;

	if(   (sockfd = socket(AF_INET, SOCK_DGRAM, 0)) != INVALID_SOCKET     ) {
		ZeroMemory((char *)&serv_addr, sizeof(serv_addr));
		serv_addr.sin_family = AF_INET;
		serv_addr.sin_addr.s_addr = htonl(INADDR_ANY);
		serv_addr.sin_port = htons(chan);
		if(bind(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) >= 0) {
		//	set for non-blocking mode
			if(ioctlsocket(sockfd, FIONBIO, &nonBlocking) == SOCKET_ERROR) {
				perror("unable to set non-blocking\n"); 
				return -1;
			}
		}
		else  { perror("unable to  bind\n"); return -1; }
	}
	return (sockfd == INVALID_SOCKET ? -1 : (int)sockfd);
#else
	struct sockaddr_in serv_addr;
	int  sockfd;
	
	if((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
			return sockfd;

	bzero((char *)&serv_addr, sizeof(serv_addr));
	serv_addr.sin_family = AF_INET;
	serv_addr.sin_addr.s_addr = htonl(INADDR_ANY);
	serv_addr.sin_port = htons(chan);
	
	if(bind(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0)
	{
		perror("unable to  bind\n");
		return -1;
	}

	fcntl(sockfd, F_SETFL, FNDELAY); 
	return sockfd;
#endif
}








static void closeudp(int sockfd) {
	#ifdef WIN32
		closesocket(sockfd);
	#else
		close(sockfd);
	#endif
}

static Boolean catchupflag=FALSE;
Boolean ClientReply(int packetsize, void *packet, int socketfd, 
	void *clientaddresspointer, int clientaddressbufferlength)
{
	if(!clientaddresspointer) return FALSE;
	catchupflag= TRUE;
	return packetsize==sendto(socketfd, packet, packetsize, 0, clientaddresspointer, clientaddressbufferlength);
}

static Boolean exitflag= FALSE;
void sgi_CleanExit(void) {
	exitflag = TRUE;
}

Boolean sgi_HaveToQuit(void) {
	return exitflag;
}


/* file descriptor poll table */
static int npolldevs =0;
typedef struct polldev
{
	int fd;
	void (*callbackfunction)(int , void *);
	void *dummy;
} polldev;
#define TABMAX 8
static polldev polldevs[TABMAX];


/*      Register a device (referred to by a file descriptor that the caller
	should have already successfully obtained from a system call) to be
	polled as real-time constraints allowed.
        
        When a select(2) call indicates activity on the file descriptor, the
	callback function is called with the file descripter as first
	argument and the given dummy argument (presumably a pointer to the
	instance variables associated with the device).
*/
int RegisterPollingDevice(int fd, void (*callbackfunction)(int , void *), void *dummy)
{
	if(npolldevs<TABMAX)
	{
		polldevs[npolldevs].fd = fd;
		polldevs[npolldevs].callbackfunction = callbackfunction;
		polldevs[npolldevs].dummy = dummy;
	}
	else return -1;
	return npolldevs++;
}

static int caught_sigint;

static void catch_sigint()  {
   caught_sigint = 1;
}
static int sockfd, usockfd;


void PrintClientAddr(ClientAddr CA) {
    unsigned long addr = CA->cl_addr.sin_addr.s_addr;
    printf("Client address %p:\n", CA);
    printf("  clilen %d, sockfd %d\n", CA->clilen, CA->sockfd);
    printf("  sin_family %d, sin_port %d\n", CA->cl_addr.sin_family,
	   CA->cl_addr.sin_port);
    printf("  address: (%x) %s\n", addr, inet_ntoa(CA->cl_addr.sin_addr));

    printf("  sin_zero = \"%c%c%c%c%c%c%c%c\"\n", 
	   CA->cl_addr.sin_zero[0],
	   CA->cl_addr.sin_zero[1],
	   CA->cl_addr.sin_zero[2],
	   CA->cl_addr.sin_zero[3],
	   CA->cl_addr.sin_zero[4],
	   CA->cl_addr.sin_zero[5],
	   CA->cl_addr.sin_zero[6],
	   CA->cl_addr.sin_zero[7]);

    printf("\n");
}

//*******************

void WriteTime(char* dst, osc_time_t osctime)
{
	*(int32_t*)dst = htonl((int32_t)(osctime >> 32));
	*(int32_t*)(dst+4) = htonl((int32_t)osctime);
}

void WriteMode(char* dst)
{
	*(int32_t*)dst = htonl(0);
}

osc_time_t ReadTime(const char* src)
{
  osc_time_t osctime = ntohl(*(int32_t*)src);
  return (osctime << 32) + ntohl(*(int32_t*)(src+4));
}

double TimeToSeconds(osc_time_t osctime)
{
  return (double)osctime * 2.3283064365386962890625e-10 /* 1/2^32 */;
}

int timeRound(double x)
{	
	return x >= 0.0 ? x+0.5 : x-0.5;
}
/*
void WriteLogicalTime(char* dst)
{
        static double startTime = -1.0;
        double sTime;
                                                                                
        // Initialisierung der Startzeit.
        // Knnte effizienter (ohne 'if') auch irgendwo vorher passieren.
        // Knnte wahrscheinlich auch 0.0 sein.
        if (startTime < 0.0) {
                startTime = clock_getlogicaltime();
        }
                                                                                
        sTime = clock_gettimesince(startTime) * 0.001;
        *(int32_t*)dst = hton'K l((int32_t)sTime);
        *(int32_t*)(dst+4) = htonl((int32_t)(4294967296.0 * sTime));
}
*/

void WriteLogicalTime(char* dst)
{
	double sTime = clock_gettimesince(19230720) / 1000.0;
	double tau = sTime - timeRound(sTime);
	
	//fprintf(stderr, "sSec = %f tau = %f\n", sTime, tau);
	
	*(int32_t*)dst = htonl((int32_t)(sTime));
	*(int32_t*)(dst+4) = htonl((int32_t)(4294967296 * tau));
}

Boolean dumpOSC_SendReply(char *buf, int n, void *clientDesc, int clientDescLenght, int fd)
{
	if((n == 24) && (strcmp(buf, "#time") == 0))
	{		
		osc_time_t t0, t1, t2;
		double dt0, dt1, dt2;		

		WriteMode(buf+6);
		
		t0 = ReadTime(buf+8);		
		    
		WriteLogicalTime(buf+16);
		t1 = ReadTime(buf+16); // reverse
		dt0 = TimeToSeconds(t0); // client time
		dt1 = TimeToSeconds(t1); // server time	
		
		//		fprintf(stderr, "%f\t%f\t%f\n", dt0, dt1, dt0 - dt1);

		sendto(fd, buf, n, 0, (struct sockaddr *)clientDesc, clientDescLenght);		
		return TRUE;
	}
	else
	{
		return FALSE;
	}
}

//**********************

void dumpOSC_ParsePacket(t_dumpOSC *x, char *buf, int n, ClientAddr returnAddr) {
  //  t_dumpOSC *x;
  int size, messageLen, i;
  char *messageName;
  char *args;
  
  //#ifdef PRINTADDRS
  #ifdef DEBUG
	//PrintClientAddr(returnAddr);
  #endif


  if ((n%4) != 0) {
    complain("SynthControl packet size (%d) not a multiple of 4 bytes: dropping", n);
    return;
  }

  if ((n >= 8) && (strncmp(buf, "#bundle", 8) == 0)) {
		/* This is a bundle message. */
		#ifdef DEBUG
			printf("dumpOSC_ParsePacket: bundle msg: bundles not yet supported\n");
		#endif

		if (n < 16) {
		  complain("Bundle message too small (%d bytes) for time tag", n);
		  return;
		}

		/* Print the time tag */
		#ifdef DEBUG
			printf("[ %lx%08lx\n", ntohl(*((unsigned long *)(buf+8))), ntohl(*((unsigned long *)(buf+12))));
		#endif

		/* Note: if we wanted to actually use the time tag as a little-endian
		   64-bit int, we'd have to word-swap the two 32-bit halves of it */

		i = 16; /* Skip "#group\0" and time tag */

		while(i<n) {
			size = ntohl(*((int *) (buf + i)));
			if ((size % 4) != 0) {
				complain("Bad size count %d in bundle (not a multiple of 4)", size);
				return;
			}
			if ((size + i + 4) > n) {
				complain("Bad size count %d in bundle (only %d bytes left in entire bundle)",
				size, n-i-4);
				return;	
			}

			/* Recursively handle element of bundle */
			dumpOSC_ParsePacket(x, buf+i+4, size, returnAddr);
			i += 4 + size;
		}

		if (i != n) {
			complain("This can't happen");
		}
		#ifdef DEBUG
			printf("]\n");
		#endif

  } 
  else if ((n == 24) && (strcmp(buf, "#time") == 0))
  {
 		complain("Time message: %s\n :).\n", htm_error_string);
		return; 	

  }
  else
  {
		/* This is not a bundle message */

		messageName = buf;
		args = DataAfterAlignedString(messageName, buf+n);
		if (args == 0) {
			complain("Bad message name string: %s\nDropping entire message.\n",
			htm_error_string);
			return;
		}
		messageLen = args-messageName;
		dumpOSC_Smessage(x, messageName, (void *)args, n-messageLen, returnAddr);
  }
}

#define SMALLEST_POSITIVE_FLOAT 0.000001f

static void dumpOSC_Smessage(t_dumpOSC *x, char *address, void *v, int n, ClientAddr returnAddr) {
  char *chars = v;
  t_atom at;
  //t_atom myargv[50];

  int myargc = x->x_outatc;
  t_atom* mya = x->x_outat;
  int myi;

#ifdef DEBUG
  printf("%s ", address);
#endif

  // ztoln+cvt from envgen.c, ggee-0.18 ..
  // outlet_anything's 'symbol' gets set to address
  // so we dont need to append address to the atomlist
  /*
    SETSYMBOL(mya,gensym(address));myargc++;
    x->x_outatc = myargc;
  */

  if (n != 0) {
    if (chars[0] == ',') {
      if (chars[1] != ',') {
	/* This message begins with a type-tag string */
	dumpOSC_PrintTypeTaggedArgs(x, v, n);
      } else {
	/* Double comma means an escaped real comma, not a type string */
	dumpOSC_PrintHeuristicallyTypeGuessedArgs(x, v, n, 1);
      }
    } else {
      dumpOSC_PrintHeuristicallyTypeGuessedArgs(x, v, n, 0);
    }
  }

  outlet_anything(x->x_msgout,gensym(address),x->x_outatc,(t_atom*)&x->x_outat);
  x->x_outatc = 0;
#ifdef DEBUG
  printf("\n");
#endif
  fflush(stdout);	/* Added for Sami 5/21/98 */
}

static void dumpOSC_PrintTypeTaggedArgs(t_dumpOSC *x, void *v, int n) { 
  char *typeTags, *thisType;
  char *p;
  
  int myargc = x->x_outatc;
  t_atom* mya = x->x_outat;
  int myi;

  typeTags = v;
  
  if (!IsNiceString(typeTags, typeTags+n)) {
    /* No null-termination, so maybe it wasn't a type tag
       string after all */
    dumpOSC_PrintHeuristicallyTypeGuessedArgs(x, v, n, 0);
    return;
  }

  p = DataAfterAlignedString(typeTags, typeTags+n);
  

  for (thisType = typeTags + 1; *thisType != 0; ++thisType) {
    switch (*thisType) {
    case 'i': case 'r': case 'm': case 'c':
#ifdef DEBUG
      //post("integer: %d", ntohl(*((int *) p)));
#endif
      /* Martin Peach fix for negative floats:
	   * was: SETFLOAT(mya+myargc,ntohl(*((int *) p))); 
	   * now is: 
	   */
      SETFLOAT(mya+myargc,(signed)ntohl(*((int *) p)));
      myargc++;

      p += 4;
      break;

    case 'f': {
      int i = ntohl(*((int *) p));
      float *floatp = ((float *) (&i));
#ifdef DEBUG
      post("float: %f", *floatp);
#endif
      SETFLOAT(mya+myargc,*floatp);
      myargc++;

      p += 4;
    }
    break;

    case 'h': case 't':
#ifdef DEBUG
      printf("[A 64-bit int] ");
#endif
      post("[A 64-bit int] not implemented");

      p += 8;
      break;

    case 'd':
#ifdef DEBUG
      printf("[A 64-bit float] ");
#endif
      post("[A 64-bit float] not implemented");

      p += 8;
      break;

    case 's': case 'S':
      if (!IsNiceString(p, typeTags+n)) {
	post("Type tag said this arg is a string but it's not!\n");
	return;
      } else {
#ifdef DEBUG
	post("string: \"%s\"", p);
#endif
	SETSYMBOL(mya+myargc,gensym(p));
	myargc++;
	//outlet_list(x->x_msgout, 0,sizeof(p), p);
	//outlet_anything(x->x_msgout, 0, sizeof(p), p);
	p = DataAfterAlignedString(p, typeTags+n);
	// append to output vector ..
      }
      break;

    case 'T':
#ifdef DEBUG
      printf("[True] ");
#endif
      SETFLOAT(mya+myargc,1.);
      myargc++;
      break;
    case 'F':
#ifdef DEBUG
      printf("[False] ");
#endif
      SETFLOAT(mya+myargc,0.);
      myargc++;
      break;
    case 'N':
#ifdef DEBUG
      printf("[Nil]");
#endif
      post("sendOSC: [Nil] not implemented");
      break;
    case 'I':
#ifdef DEBUG
      printf("[Infinitum]");
#endif
      post("sendOSC: [Infinitum] not implemented");
      break;

    default:
      post("sendOSC: [Unrecognized type tag %c]", *thisType);
      // return;
    }
  }
  x->x_outatc = myargc;
}

static void dumpOSC_PrintHeuristicallyTypeGuessedArgs(t_dumpOSC *x, void *v, int n, int skipComma) {
  int i, thisi;
  float thisf;
  int *ints;
  char *chars;
  char *string, *nextString;
	
  int myargc= x->x_outatc;
  t_atom* mya = x->x_outat;
  int myi;


  /* Go through the arguments 32 bits at a time */
  ints = v;
  chars = v;

  for (i = 0; i<n/4; ) {
    string = &chars[i*4];
    thisi = ntohl(ints[i]);
    /* Reinterpret the (potentially byte-reversed) thisi as a float */
    thisf = *(((float *) (&thisi)));

    if  (thisi >= -1000 && thisi <= 1000000) {
#ifdef DEBUG
      printf("%d ", thisi);
#endif
      // append to output vector ..
      SETFLOAT(mya+myargc,(t_float) (thisi));
      myargc++;
      //      outlet_float(x->x_msgout, thisi);
      i++;
    } else if (thisf >= -1000.f && thisf <= 1000000.f &&
	       (thisf <=0.0f || thisf >= SMALLEST_POSITIVE_FLOAT)) {
#ifdef DEBUG
      printf("%f ",  thisf);
#endif
      // append to output vector ..
      SETFLOAT(mya+myargc,thisf);
      myargc++;
      //outlet_float(x->x_msgout, thisf);
      i++;
    } else if (IsNiceString(string, chars+n)) {
      nextString = DataAfterAlignedString(string, chars+n);
#ifdef DEBUG
      printf("\"%s\" ", (i == 0 && skipComma) ? string +1 : string);
#endif
      // append to output vector ..
      SETSYMBOL(mya+myargc,gensym(string));
      myargc++;
      //outlet_symbol(x->x_msgout, gensym((i == 0 && skipComma) ? string +1 : string));
      i += (nextString-string) / 4;
    } else {
      // unhandled .. ;)
#ifdef DEBUG
      printf("0x%x xx", ints[i]);
#endif
      i++;
    }
    x->x_outatc = myargc;
  }
}


#define STRING_ALIGN_PAD 4

char *DataAfterAlignedString(char *string, char *boundary) 
{
    /* The argument is a block of data beginning with a string.  The
       string has (presumably) been padded with extra null characters
       so that the overall length is a multiple of STRING_ALIGN_PAD
       bytes.  Return a pointer to the next byte after the null
       byte(s).  The boundary argument points to the character after
       the last valid character in the buffer---if the string hasn't
       ended by there, something's wrong.

       If the data looks wrong, return 0, and set htm_error_string */

    int i;

    if ((boundary - string) %4 != 0) {
	fprintf(stderr, "Internal error: DataAfterAlignedString: bad boundary\n");
	return 0;
    }

    for (i = 0; string[i] != '\0'; i++) {
	if (string + i >= boundary) {
	    htm_error_string = "DataAfterAlignedString: Unreasonably long string";
	    return 0;
	}
    }

    /* Now string[i] is the first null character */
    i++;

    for (; (i % STRING_ALIGN_PAD) != 0; i++) {
	if (string + i >= boundary) {
	    htm_error_string = "DataAfterAlignedString: Unreasonably long string";
	    return 0;
	}
	if (string[i] != '\0') {
	    htm_error_string = "DataAfterAlignedString: Incorrectly padded string.";
	    return 0;
	}
    }

    return string+i;
}

Boolean IsNiceString(char *string, char *boundary) 
{
    /* Arguments same as DataAfterAlignedString().  Is the given "string"
       really a string?  I.e., is it a sequence of isprint() characters
       terminated with 1-4 null characters to align on a 4-byte boundary? */

    int i;

    if ((boundary - string) %4 != 0) {
	fprintf(stderr, "Internal error: IsNiceString: bad boundary\n");
	return 0;
    }

    for (i = 0; string[i] != '\0'; i++) {
	if (!isprint(string[i])) return FALSE;
	if (string + i >= boundary) return FALSE;
    }

    /* If we made it this far, it's a null-terminated sequence of printing characters 
       in the given boundary.  Now we just make sure it's null padded... */

    /* Now string[i] is the first null character */
    i++;
    for (; (i % STRING_ALIGN_PAD) != 0; i++) {
	if (string[i] != '\0') return FALSE;
    }

    return TRUE;
}









#include <stdarg.h>
void complain(char *s, ...) {
    va_list ap;
    va_start(ap, s);
    fprintf(stderr, "*** ERROR: ");
    vfprintf(stderr, s, ap);
    fprintf(stderr, "\n");
    va_end(ap);
}

#endif /* __sgi or LINUX or WIN32 */