2 * Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 *---------------------------------------------------------------------------
27 * main.c - isdndecode main program file
28 * -------------------------------------
30 * $Id: main.c,v 1.13 2000/02/21 15:17:17 hm Exp $
32 * $FreeBSD: src/usr.sbin/i4b/isdndecode/main.c,v 1.8.2.1 2001/08/01 17:45:05 obrien Exp $
33 * $DragonFly: src/usr.sbin/i4b/isdndecode/main.c,v 1.3 2003/11/16 15:17:35 eirikn Exp $
35 * last edit-date: [Mon Feb 21 16:19:30 2000]
37 *---------------------------------------------------------------------------*/
41 unsigned char buf[BSIZE];
61 int enable_trace = TRACE_D_RX | TRACE_D_TX;
63 static char outfilename[1024];
64 static char BPfilename[1024];
66 static void dumpbuf( int n, unsigned char *buf, i4b_trace_hdr_t *hdr);
67 static int switch_driver( int value, int rx, int tx );
68 static void usage( void );
69 static void exit_hdl( void );
70 static void reopenfiles( int );
73 /*---------------------------------------------------------------------------*
75 *---------------------------------------------------------------------------*/
80 fprintf(stderr,"isdndecode - isdn4bsd package ISDN decoder for passive cards (%d.%d.%d)\n", VERSION, REL, STEP);
81 fprintf(stderr,"usage: isdntrace -a -b -d -f <file> -h -i -l -n <val> -o -p <file> -r -u <unit>\n");
82 fprintf(stderr," -x -B -P -R <unit> -T <unit>\n");
83 fprintf(stderr," -a analyzer mode ................................... (default off)\n");
84 fprintf(stderr," -b switch B channel trace on ....................... (default off)\n");
85 fprintf(stderr," -d switch D channel trace off ....................... (default on)\n");
86 fprintf(stderr," -f <file> write output to file filename ........... (default %s0)\n", DECODE_FILE_NAME);
87 fprintf(stderr," -h don't print header for each message ............. (default off)\n");
88 fprintf(stderr," -i print I.430 (layer 1) INFO signals .............. (default off)\n");
89 fprintf(stderr," -l don't decode low layer Q.921 messages ........... (default off)\n");
90 fprintf(stderr," -o don't write output to a file .................... (default off)\n");
91 fprintf(stderr," -p <file> specify filename for -B and -P ........ (default %s0)\n", BIN_FILE_NAME);
92 fprintf(stderr," -u <unit> specify controller unit number ............... (default unit 0)\n");
93 fprintf(stderr," -x print packets with unknown protocoldiscriminator (default off)\n");
94 fprintf(stderr," -B write binary trace data to file filename ........ (default off)\n");
95 fprintf(stderr," -P playback from binary trace data file ............ (default off)\n");
96 fprintf(stderr," -R <unit> analyze Rx controller unit number (for -a) ... (default unit %d)\n", RxUDEF);
97 fprintf(stderr," -T <unit> analyze Tx controller unit number (for -a) ... (default unit %d)\n", TxUDEF);
102 /*---------------------------------------------------------------------------*
104 *---------------------------------------------------------------------------*/
106 main(int argc, char *argv[])
118 char *outfile = DECODE_FILE_NAME;
119 char *binfile = BIN_FILE_NAME;
123 i4b_trace_hdr_t *ithp = NULL;
126 b = &buf[sizeof(i4b_trace_hdr_t)];
128 while( (c = getopt(argc, argv, "abdf:hiln:op:u:xBPR:T:")) != -1)
137 enable_trace |= (TRACE_B_RX | TRACE_B_TX);
141 enable_trace &= (~(TRACE_D_TX | TRACE_D_RX));
158 enable_trace |= TRACE_I;
173 if(unit < 0 || unit >= MAX_CONTROLLERS)
191 if(Rx < 0 || Rx >= MAX_CONTROLLERS)
197 if(Tx < 0 || Tx >= MAX_CONTROLLERS)
208 if(enable_trace == 0)
219 sprintf(BPfilename, "%s", binfile);
221 sprintf(BPfilename, "%s%d", BIN_FILE_NAME, unit);
223 if((BP = fopen(BPfilename, "r")) != NULL)
227 sprintf(buffer, "%s%s", BPfilename, DECODE_FILE_NAME_BAK);
228 rename(BPfilename, buffer);
230 if((BP = fopen(BPfilename, "w")) == NULL)
234 sprintf(buffer, "Error opening file [%s]", BPfilename);
239 if((setvbuf(BP, NULL, _IONBF, 0)) != 0)
243 sprintf(buffer, "Error setting file [%s] to unbuffered", BPfilename);
252 sprintf(BPfilename, "%s", binfile);
254 sprintf(BPfilename, "%s%d", BIN_FILE_NAME, unit);
256 if((BP = fopen(BPfilename, "r")) == NULL)
260 sprintf(buffer, "Error opening file [%s]", BPfilename);
267 sprintf(devicename, "%s%d", I4BTRC_DEVICE, unit);
269 if((f = open(devicename, O_RDWR)) < 0)
273 sprintf(buffer, "Error opening trace device [%s]", devicename);
282 sprintf(outfilename, "%s%d", DECODE_FILE_NAME, unit);
284 strcpy(outfilename, outfile);
287 if((Fout = fopen(outfilename, "r")) != NULL)
291 sprintf(buffer, "%s%s", outfilename, DECODE_FILE_NAME_BAK);
292 rename(outfilename, buffer);
295 if((Fout = fopen(outfilename, "w")) == NULL)
299 sprintf(buffer, "Error opening file [%s]", outfilename);
304 if((setvbuf(Fout, NULL, _IONBF, 0)) != 0)
308 sprintf(buffer, "Error setting file [%s] to unbuffered", outfile);
314 if((setvbuf(stdout, NULL, _IOLBF, 0)) != 0)
318 sprintf(buffer, "Error setting stdout to line-buffered");
325 if((switch_driver(enable_trace, Rx, Tx)) == -1)
331 signal(SIGHUP, SIG_IGN); /* ignore hangup signal */
332 signal(SIGUSR1, reopenfiles); /* rotate logfile(s) */
338 sprintf(headerbuf, "\n==== isdnanalyze controller rx #%d - tx #%d ==== started %s",
343 sprintf(headerbuf, "\n=========== isdntrace controller #%d =========== started %s",
347 printf("%s", headerbuf);
350 fprintf(Fout, "%s", headerbuf);
356 n = read(f, buf, BSIZE);
360 if((fwrite(buf, 1, n, BP)) != n)
363 sprintf(buffer, "Error writing file [%s]", BPfilename);
369 n -= sizeof(i4b_trace_hdr_t);
373 if((fread(buf, 1, sizeof(i4b_trace_hdr_t), BP)) != sizeof(i4b_trace_hdr_t))
377 printf("\nEnd of playback input file reached.\n");
383 sprintf(buffer, "Error reading hdr from file [%s]", BPfilename);
389 ithp = (i4b_trace_hdr_t *)buf;
390 l = ithp->length - sizeof(i4b_trace_hdr_t);
392 if((n = fread(buf+sizeof(i4b_trace_hdr_t), 1, l , BP)) != l)
395 sprintf(buffer, "Error reading data from file [%s]", BPfilename);
404 dumpbuf(n, b, (i4b_trace_hdr_t *)buf);
409 /*---------------------------------------------------------------------------*
410 * format header into static buffer, return buffer address
411 *---------------------------------------------------------------------------*/
413 fmt_hdr(i4b_trace_hdr_t *hdr, int frm_len)
416 static char hbuf[256];
419 s = localtime((time_t *)&(hdr->time.tv_sec));
421 if(hdr->type == TRC_CH_I) /* Layer 1 INFO's */
423 sprintf(hbuf,"\n-- %s - unit:%d ---------------- time:%2.2d.%2.2d %2.2d:%2.2d:%2.2d.%06u ",
424 ((hdr->dir) ? "NT->TE" : "TE->NT"),
431 (u_int32_t)hdr->time.tv_usec);
437 sprintf(hbuf,"\n-- %s - unit:%d - frame:%6.6u - time:%2.2d.%2.2d %2.2d:%2.2d:%2.2d.%06u - length:%d (%d) ",
438 ((hdr->dir) ? "NT->TE" : "TE->NT"),
446 (u_int32_t)hdr->time.tv_usec,
452 sprintf(hbuf,"\n-- %s - unit:%d - frame:%6.6u - time:%2.2d.%2.2d %2.2d:%2.2d:%2.2d.%06u - length:%d ",
453 ((hdr->dir) ? "NT->TE" : "TE->NT"),
461 (u_int32_t)hdr->time.tv_usec,
466 for(i=strlen(hbuf); i <= NCOLS;)
475 /*---------------------------------------------------------------------------*
476 * decode protocol and output to file(s)
477 *---------------------------------------------------------------------------*/
479 dumpbuf(int n, unsigned char *buf, i4b_trace_hdr_t *hdr)
481 static char l1buf[128];
482 static unsigned char l2buf[32000];
483 static unsigned char l3buf[32000];
495 case TRC_CH_I: /* Layer 1 INFO's */
496 if(enable_trace & TRACE_I)
500 case TRC_CH_D: /* D-channel data */
501 cnt = layer2(l2buf, buf, hdr->dir, print_q921);
511 if((*buf != 0x08) && (xflag == 0))
517 layer3(l3buf, n, cnt, buf);
521 default: /* B-channel data */
525 for (i = 0; i < n; i += 16)
527 sprintf((pbuf+strlen(pbuf)),"B%d:%.3x ", hdr->type, i);
529 for (j = 0; j < 16; j++)
531 sprintf((pbuf+strlen(pbuf)),"%02x ", buf[i + j]);
533 sprintf((pbuf+strlen(pbuf))," ");
535 sprintf((pbuf+strlen(pbuf))," ");
537 for (j = 0; j < 16 && i + j < n; j++)
538 if (isprint(buf[i + j]))
539 sprintf((pbuf+strlen(pbuf)),"%c", buf[i + j]);
541 sprintf((pbuf+strlen(pbuf)),".");
543 sprintf((pbuf+strlen(pbuf)),"\n");
548 if(header && ((l1buf[0] != '\0' || l2buf[0] != '\0') || (l3buf[0] != 0)))
551 p = fmt_hdr(hdr, nsave);
554 fprintf(Fout, "%s", p);
561 fprintf(Fout, "%s", l1buf);
568 fprintf(Fout, "%s", l2buf);
575 fprintf(Fout, "%s", l3buf);
579 /*---------------------------------------------------------------------------*
580 * exit handler function to be called at program exit
581 *---------------------------------------------------------------------------*/
586 switch_driver(TRACE_OFF, Rx, Tx);
589 /*---------------------------------------------------------------------------*
590 * switch driver debugging output on/off
591 *---------------------------------------------------------------------------*/
593 switch_driver(int value, int rx, int tx)
600 if(ioctl(f, I4B_TRC_SET, &v) < 0)
602 sprintf(buffer, "Error ioctl I4B_TRC_SET, val = %d", v);
609 if(value == TRACE_OFF)
611 if(ioctl(f, I4B_TRC_RESETA, &v) < 0)
613 sprintf(buffer, "Error ioctl I4B_TRC_RESETA - ");
620 i4b_trace_setupa_t tsa;
627 if(ioctl(f, I4B_TRC_SETA, &tsa) < 0)
629 sprintf(buffer, "Error ioctl I4B_TRC_SETA, val = %d", v);
638 /*---------------------------------------------------------------------------*
639 * reopen files to support rotating logfile(s) on SIGUSR1
641 * based on an idea from Ripley (ripley@nostromo.in-berlin.de)
643 * close file and reopen it for append. this will be a nop
644 * if the previously opened file hasn't moved but will open
645 * a new one otherwise, thus enabling a rotation...
647 *---------------------------------------------------------------------------*/
649 reopenfiles(int dummy)
655 if((Fout = fopen(outfilename, "a")) == NULL)
659 sprintf(buffer, "Error re-opening file [%s]", outfilename);
664 if((setvbuf(Fout, NULL, _IONBF, 0)) != 0)
668 sprintf(buffer, "Error re-setting file [%s] to unbuffered", outfilename);
679 if((BP = fopen(BPfilename, "a")) == NULL)
683 sprintf(buffer, "Error re-opening file [%s]", BPfilename);
688 if((setvbuf(BP, NULL, _IONBF, 0)) != 0)
692 sprintf(buffer, "Error re-setting file [%s] to unbuffered", BPfilename);
699 /*---------------------------------------------------------------------------*
700 * decode extension bit
701 *---------------------------------------------------------------------------*/
703 extension(int layer, char *buffer, int cnt, unsigned char value, unsigned char mask)
705 sprintline(layer, buffer, cnt, value, mask, "Extension Bit = %c (%s)",
706 (value & mask) ? '1' : '0',
707 (value & mask) ? "no extension, final octet" : "with extension, octet follows");
710 /*---------------------------------------------------------------------------*
711 * print bits as 0/1 available for mask
712 *---------------------------------------------------------------------------*/
714 print_bits(unsigned char val, unsigned char mask)
716 static char buffer[10];
740 /*---------------------------------------------------------------------------*
741 * print one decoded output line
742 *---------------------------------------------------------------------------*/
744 sprintline(int layer, char *buffer, int oct_count, int oct_val,
745 int oct_mask, const char *fmt, ...)
748 static int lastcount = -1;
754 if(oct_count != lastcount)
756 lastcount = oct_count;
758 sprintf(lbuffer, "L%d %2d %02X %s ",
762 print_bits(oct_val, oct_mask));
766 sprintf(lbuffer, " %s ",
767 print_bits(oct_val, oct_mask));
770 vsprintf(lbuffer+strlen(lbuffer), fmt, ap);
774 sprintf(lbuffer+strlen(lbuffer), "\n");
776 if((ptr = rindex(lbuffer, '(')) != NULL)
780 int len = strlen(lbuffer);
783 for(s = lbuffer; s < ptr; *b++ = *s++)
785 for(i = 0;(i+len) <= NCOLS; *b++ = ' ', i++)
787 for(; *s; *b++ = *s++)
793 strcpy(buffer, lbuffer);