775 lines
17 KiB
C
775 lines
17 KiB
C
/*
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* Copyright (c) 1997, 1999 Hellmuth Michaelis. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*---------------------------------------------------------------------------
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*
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* main.c - isdndecode main program file
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* -------------------------------------
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*
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* $Id: main.c,v 1.7 1999/02/14 09:44:57 hm Exp $
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*
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* last edit-date: [Sun Feb 14 10:17:04 1999]
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*
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*---------------------------------------------------------------------------*/
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#include "decode.h"
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unsigned char buf[BSIZE];
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FILE *Fout = NULL;
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FILE *BP = NULL;
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int outflag = 1;
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int header = 1;
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int print_q921 = 1;
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int unit = 0;
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int dchan = 0;
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int bchan = 0;
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int traceon = 0;
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int analyze = 0;
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int Rx = RxUDEF;
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int Tx = TxUDEF;
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int f;
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int Bopt = 0;
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int Popt = 0;
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int bpopt = 0;
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int info = 0;
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static char outfilename[1024];
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static char BPfilename[1024];
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static void dumpbuf( int n, unsigned char *buf, i4b_trace_hdr_t *hdr);
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static int switch_driver( int value, int rx, int tx );
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static void usage( void );
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static void exit_hdl( void );
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static void reopenfiles( int );
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/*---------------------------------------------------------------------------*
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* main
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*---------------------------------------------------------------------------*/
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int
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main(int argc, char *argv[])
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{
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extern int optind;
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extern int opterr;
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extern char *optarg;
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char devicename[80];
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char headerbuf[256];
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int n;
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int c;
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char *b;
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int enable_trace = TRACE_D_RX | TRACE_D_TX;
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char *outfile = DECODE_FILE_NAME;
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char *binfile = BIN_FILE_NAME;
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int outfileset = 0;
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time_t tm;
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i4b_trace_hdr_t *ithp = NULL;
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int l;
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b = &buf[sizeof(i4b_trace_hdr_t)];
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while( (c = getopt(argc, argv, "abdf:hiln:op:u:BPR:T:?")) != EOF)
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{
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switch(c)
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{
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case 'a':
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analyze = 1;
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break;
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case 'b':
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enable_trace |= (TRACE_B_RX | TRACE_B_TX);
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break;
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case 'd':
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enable_trace &= (~(TRACE_D_TX | TRACE_D_RX));
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break;
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case 'o':
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outflag = 0;
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break;
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case 'f':
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outfile = optarg;
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outfileset = 1;
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break;
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case 'h':
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header = 0;
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break;
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case 'i':
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enable_trace |= TRACE_I;
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info = 1;
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break;
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case 'l':
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print_q921 = 0;
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break;
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case 'p':
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binfile = optarg;
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bpopt = 1;
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break;
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case 'u':
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unit = atoi(optarg);
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if(unit < 0 || unit >= MAX_CONTROLLERS)
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usage();
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break;
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case 'B':
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Bopt = 1;
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break;
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case 'P':
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Popt = 1;
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break;
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case 'R':
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Rx = atoi(optarg);
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if(Rx < 0 || Rx >= MAX_CONTROLLERS)
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usage();
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break;
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case 'T':
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Tx = atoi(optarg);
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if(Tx < 0 || Tx >= MAX_CONTROLLERS)
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usage();
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break;
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case '?':
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default:
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usage();
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break;
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}
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}
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if(enable_trace == 0)
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usage();
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if(Bopt && Popt)
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usage();
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atexit(exit_hdl);
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if(Bopt)
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{
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if(bpopt)
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sprintf(BPfilename, "%s", binfile);
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else
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sprintf(BPfilename, "%s%d", BIN_FILE_NAME, unit);
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if((BP = fopen(BPfilename, "r")) != NULL)
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{
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char buffer[1024];
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fclose(BP);
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sprintf(buffer, "%s%s", BPfilename, DECODE_FILE_NAME_BAK);
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rename(BPfilename, buffer);
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}
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if((BP = fopen(BPfilename, "w")) == NULL)
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{
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char buffer[80];
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sprintf(buffer, "Error opening file [%s]", BPfilename);
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perror(buffer);
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exit(1);
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}
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if((setvbuf(BP, (char *)NULL, _IONBF, 0)) != 0)
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{
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char buffer[80];
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sprintf(buffer, "Error setting file [%s] to unbuffered", BPfilename);
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perror(buffer);
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exit(1);
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}
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}
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if(Popt)
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{
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if(bpopt)
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sprintf(BPfilename, "%s", binfile);
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else
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sprintf(BPfilename, "%s%d", BIN_FILE_NAME, unit);
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if((BP = fopen(BPfilename, "r")) == NULL)
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{
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char buffer[80];
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sprintf(buffer, "Error opening file [%s]", BPfilename);
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perror(buffer);
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exit(1);
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}
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}
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else
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{
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sprintf(devicename, "%s%d", I4BTRC_DEVICE, unit);
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if((f = open(devicename, O_RDWR)) < 0)
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{
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char buffer[80];
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sprintf(buffer, "Error opening trace device [%s]", devicename);
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perror(buffer);
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exit(1);
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}
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}
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if(outflag)
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{
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if(outfileset == 0)
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sprintf(outfilename, "%s%d", DECODE_FILE_NAME, unit);
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else
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strcpy(outfilename, outfile);
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if((Fout = fopen(outfilename, "r")) != NULL)
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{
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char buffer[1024];
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fclose(Fout);
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sprintf(buffer, "%s%s", outfilename, DECODE_FILE_NAME_BAK);
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rename(outfilename, buffer);
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}
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if((Fout = fopen(outfilename, "w")) == NULL)
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{
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char buffer[80];
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sprintf(buffer, "Error opening file [%s]", outfilename);
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perror(buffer);
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exit(1);
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}
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if((setvbuf(Fout, (char *)NULL, _IONBF, 0)) != 0)
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{
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char buffer[80];
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sprintf(buffer, "Error setting file [%s] to unbuffered", outfile);
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perror(buffer);
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exit(1);
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}
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}
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if((setvbuf(stdout, (char *)NULL, _IOLBF, 0)) != 0)
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{
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char buffer[80];
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sprintf(buffer, "Error setting stdout to line-buffered");
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perror(buffer);
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exit(1);
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}
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if(!Popt)
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{
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if((switch_driver(enable_trace, Rx, Tx)) == -1)
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exit(1);
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else
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traceon = 1;
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}
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signal(SIGHUP, SIG_IGN); /* ignore hangup signal */
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signal(SIGUSR1, reopenfiles); /* rotate logfile(s) */
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time(&tm);
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if(analyze)
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{
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sprintf(headerbuf, "\n==== isdnanalyze controller rx #%d - tx #%d ==== started %s",
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Rx, Tx, ctime(&tm));
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}
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else
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{
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sprintf(headerbuf, "\n=========== isdntrace controller #%d =========== started %s",
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unit, ctime(&tm));
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}
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printf("%s", headerbuf);
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if(outflag)
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fprintf(Fout, "%s", headerbuf);
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for (;;)
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{
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if(Popt == 0)
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{
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n = read(f, buf, BSIZE);
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if(Bopt)
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{
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if((fwrite(buf, 1, n, BP)) != n)
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{
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char buffer[80];
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sprintf(buffer, "Error writing file [%s]", BPfilename);
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perror(buffer);
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exit(1);
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}
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}
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n -= sizeof(i4b_trace_hdr_t);
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}
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else
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{
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if((fread(buf, 1, sizeof(i4b_trace_hdr_t), BP)) != sizeof(i4b_trace_hdr_t))
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{
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if(feof(BP))
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{
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printf("\nEnd of playback input file reached.\n");
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exit(0);
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}
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else
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{
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char buffer[80];
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sprintf(buffer, "Error reading hdr from file [%s]", BPfilename);
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perror(buffer);
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exit(1);
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}
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}
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ithp = (i4b_trace_hdr_t *)buf;
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l = ithp->length - sizeof(i4b_trace_hdr_t);
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if((n = fread(buf+sizeof(i4b_trace_hdr_t), 1, l , BP)) != l)
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{
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char buffer[80];
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sprintf(buffer, "Error reading data from file [%s]", BPfilename);
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perror(buffer);
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exit(1);
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}
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}
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if(n > 0)
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{
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dumpbuf(n, b, (i4b_trace_hdr_t *)buf);
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}
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}
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}
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/*---------------------------------------------------------------------------*
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* format header into static buffer, return buffer address
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*---------------------------------------------------------------------------*/
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char *
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fmt_hdr(i4b_trace_hdr_t *hdr, int frm_len)
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{
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struct tm *s;
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static char hbuf[256];
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int i = 0;
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s = localtime(&(hdr->time.tv_sec));
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if(hdr->type == TRC_CH_I) /* Layer 1 INFO's */
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{
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sprintf(hbuf,"\n-- %s - unit:%d ---------------- time:%2.2d.%2.2d %2.2d:%2.2d:%2.2d.%06u ",
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((hdr->dir) ? "NT->TE" : "TE->NT"),
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hdr->unit,
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s->tm_mday,
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s->tm_mon + 1,
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s->tm_hour,
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s->tm_min,
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s->tm_sec,
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(u_int32_t)hdr->time.tv_usec);
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}
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else
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{
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if(hdr->trunc > 0)
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{
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sprintf(hbuf,"\n-- %s - unit:%d - frame:%6.6u - time:%2.2d.%2.2d %2.2d:%2.2d:%2.2d.%06u - length:%d (%d) ",
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((hdr->dir) ? "NT->TE" : "TE->NT"),
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hdr->unit,
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hdr->count,
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s->tm_mday,
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s->tm_mon + 1,
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s->tm_hour,
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s->tm_min,
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s->tm_sec,
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(u_int32_t)hdr->time.tv_usec,
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frm_len,
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hdr->trunc);
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}
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else
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{
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sprintf(hbuf,"\n-- %s - unit:%d - frame:%6.6u - time:%2.2d.%2.2d %2.2d:%2.2d:%2.2d.%06u - length:%d ",
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((hdr->dir) ? "NT->TE" : "TE->NT"),
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hdr->unit,
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hdr->count,
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s->tm_mday,
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s->tm_mon + 1,
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s->tm_hour,
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s->tm_min,
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s->tm_sec,
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(u_int32_t)hdr->time.tv_usec,
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frm_len);
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}
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}
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for(i=strlen(hbuf); i <= NCOLS;)
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hbuf[i++] = '-';
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hbuf[i++] = '\n';
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hbuf[i] = '\0';
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return(hbuf);
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}
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/*---------------------------------------------------------------------------*
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* decode protocol and output to file(s)
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*---------------------------------------------------------------------------*/
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static void
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dumpbuf(int n, unsigned char *buf, i4b_trace_hdr_t *hdr)
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{
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static char l1buf[128];
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static unsigned char l2buf[32000];
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static unsigned char l3buf[32000];
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int cnt;
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int nsave = n;
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char *pbuf;
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int i, j;
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l1buf[0] = '\0';
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l2buf[0] = '\0';
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l3buf[0] = '\0';
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switch(hdr->type)
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{
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case TRC_CH_I: /* Layer 1 INFO's */
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layer1(l1buf, buf);
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break;
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case TRC_CH_D: /* D-channel data */
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cnt = layer2(l2buf, buf, hdr->dir, print_q921);
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n -= cnt;
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buf += cnt;
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if(n)
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layer3(l3buf, n, cnt, buf);
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break;
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default: /* B-channel data */
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pbuf = &l2buf[0];
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for (i = 0; i < n; i += 16)
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{
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sprintf((pbuf+strlen(pbuf)),"B%d:%.3x ", hdr->type, i);
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for (j = 0; j < 16; j++)
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if (i + j < n)
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sprintf((pbuf+strlen(pbuf)),"%02x ", buf[i + j]);
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else
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sprintf((pbuf+strlen(pbuf))," ");
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sprintf((pbuf+strlen(pbuf))," ");
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for (j = 0; j < 16 && i + j < n; j++)
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if (isprint(buf[i + j]))
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sprintf((pbuf+strlen(pbuf)),"%c", buf[i + j]);
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else
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sprintf((pbuf+strlen(pbuf)),".");
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sprintf((pbuf+strlen(pbuf)),"\n");
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}
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break;
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}
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if(header && ((l1buf[0] != '\0' || l2buf[0] != '\0') || (l3buf[0] != 0)))
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{
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char *p;
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p = fmt_hdr(hdr, nsave);
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printf("%s", p);
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if(outflag)
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fprintf(Fout, "%s", p);
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}
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if(l1buf[0] != '\0')
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{
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printf("%s", l1buf);
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if(outflag)
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fprintf(Fout, "%s", l1buf);
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}
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if(l2buf[0] != '\0')
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{
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printf("%s", l2buf);
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if(outflag)
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fprintf(Fout, "%s", l2buf);
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}
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if(l3buf[0] != '\0')
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{
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printf("%s", l3buf);
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if(outflag)
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fprintf(Fout, "%s", l3buf);
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}
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}
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/*---------------------------------------------------------------------------*
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* exit handler function to be called at program exit
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*---------------------------------------------------------------------------*/
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void
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exit_hdl()
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{
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if(traceon)
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switch_driver(TRACE_OFF, Rx, Tx);
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}
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/*---------------------------------------------------------------------------*
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* switch driver debugging output on/off
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*---------------------------------------------------------------------------*/
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static int
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switch_driver(int value, int rx, int tx)
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{
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char buffer[80];
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int v = value;
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if(analyze == 0)
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{
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if(ioctl(f, I4B_TRC_SET, &v) < 0)
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{
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sprintf(buffer, "Error ioctl I4B_TRC_SET, val = %d", v);
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perror(buffer);
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return(-1);
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}
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}
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else
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{
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if(value == TRACE_OFF)
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{
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if(ioctl(f, I4B_TRC_RESETA, &v) < 0)
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{
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sprintf(buffer, "Error ioctl I4B_TRC_RESETA - ");
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perror(buffer);
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return(-1);
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}
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}
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else
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{
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i4b_trace_setupa_t tsa;
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tsa.rxunit = rx;
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tsa.rxflags = value;
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tsa.txunit = tx;
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tsa.txflags = value;
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if(ioctl(f, I4B_TRC_SETA, &tsa) < 0)
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{
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sprintf(buffer, "Error ioctl I4B_TRC_SETA, val = %d", v);
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perror(buffer);
|
|
return(-1);
|
|
}
|
|
}
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*
|
|
* reopen files to support rotating logfile(s) on SIGUSR1
|
|
*
|
|
* based on an idea from Ripley (ripley@nostromo.in-berlin.de)
|
|
*
|
|
* close file and reopen it for append. this will be a nop
|
|
* if the previously opened file hasn't moved but will open
|
|
* a new one otherwise, thus enabling a rotation...
|
|
*
|
|
*---------------------------------------------------------------------------*/
|
|
static void
|
|
reopenfiles(int dummy)
|
|
{
|
|
if(outflag)
|
|
{
|
|
fclose(Fout);
|
|
|
|
if((Fout = fopen(outfilename, "a")) == NULL)
|
|
{
|
|
char buffer[80];
|
|
|
|
sprintf(buffer, "Error re-opening file [%s]", outfilename);
|
|
perror(buffer);
|
|
exit(1);
|
|
}
|
|
|
|
if((setvbuf(Fout, (char *)NULL, _IONBF, 0)) != 0)
|
|
{
|
|
char buffer[80];
|
|
|
|
sprintf(buffer, "Error re-setting file [%s] to unbuffered", outfilename);
|
|
perror(buffer);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
if(Bopt)
|
|
{
|
|
|
|
fclose(BP);
|
|
|
|
if((BP = fopen(BPfilename, "a")) == NULL)
|
|
{
|
|
char buffer[80];
|
|
|
|
sprintf(buffer, "Error re-opening file [%s]", BPfilename);
|
|
perror(buffer);
|
|
exit(1);
|
|
}
|
|
|
|
if((setvbuf(BP, (char *)NULL, _IONBF, 0)) != 0)
|
|
{
|
|
char buffer[80];
|
|
|
|
sprintf(buffer, "Error re-setting file [%s] to unbuffered", BPfilename);
|
|
perror(buffer);
|
|
exit(1);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*
|
|
* decode extension bit
|
|
*---------------------------------------------------------------------------*/
|
|
void
|
|
extension(int layer, char *buffer, int cnt, unsigned char value, unsigned char mask)
|
|
{
|
|
sprintline(layer, buffer, cnt, value, mask, "Extension Bit = %c (%s)",
|
|
(value & mask) ? '1' : '0',
|
|
(value & mask) ? "no extension, final octet" : "with extension, octet follows");
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*
|
|
* print bits as 0/1 available for mask
|
|
*---------------------------------------------------------------------------*/
|
|
static char *
|
|
print_bits(unsigned char val, unsigned char mask)
|
|
{
|
|
static char buffer[10];
|
|
int i = 0;
|
|
int length = 8;
|
|
|
|
while(length--)
|
|
{
|
|
if(mask & 0x80)
|
|
{
|
|
if(val & 0x80)
|
|
buffer[i++] = '1';
|
|
else
|
|
buffer[i++] = '0';
|
|
}
|
|
else
|
|
{
|
|
buffer[i++] = '-';
|
|
}
|
|
val = val << 1;
|
|
mask = mask << 1;
|
|
}
|
|
buffer[i] = '\0';
|
|
return(buffer);
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*
|
|
* print one decoded output line
|
|
*---------------------------------------------------------------------------*/
|
|
void
|
|
sprintline(int layer, char *buffer, int oct_count, int oct_val,
|
|
int oct_mask, const char *fmt, ...)
|
|
{
|
|
char lbuffer[256];
|
|
static int lastcount = -1;
|
|
char *ptr;
|
|
va_list ap;
|
|
|
|
va_start(ap, fmt);
|
|
|
|
if(oct_count != lastcount)
|
|
{
|
|
lastcount = oct_count;
|
|
|
|
sprintf(lbuffer, "L%d %2d %02X %s ",
|
|
layer,
|
|
oct_count,
|
|
oct_val,
|
|
print_bits(oct_val, oct_mask));
|
|
}
|
|
else
|
|
{
|
|
sprintf(lbuffer, " %s ",
|
|
print_bits(oct_val, oct_mask));
|
|
}
|
|
|
|
vsprintf(lbuffer+strlen(lbuffer), fmt, ap);
|
|
|
|
va_end(ap);
|
|
|
|
sprintf(lbuffer+strlen(lbuffer), "\n");
|
|
|
|
if((ptr = rindex(lbuffer, '(')) != NULL)
|
|
{
|
|
char *s = lbuffer;
|
|
char *b = buffer;
|
|
int len = strlen(lbuffer);
|
|
int i;
|
|
|
|
for(s = lbuffer; s < ptr; *b++ = *s++)
|
|
;
|
|
for(i = 0;(i+len) <= NCOLS; *b++ = ' ', i++)
|
|
;
|
|
for(; *s; *b++ = *s++)
|
|
;
|
|
*b = '\0';
|
|
}
|
|
else
|
|
{
|
|
strcpy(buffer, lbuffer);
|
|
}
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*
|
|
* usage intructions
|
|
*---------------------------------------------------------------------------*/
|
|
void
|
|
usage(void)
|
|
{
|
|
fprintf(stderr,"\n");
|
|
fprintf(stderr,"isdndecode - isdn4bsd package ISDN decoder for passive cards (%02d.%02d)\n", VERSION, REL);
|
|
fprintf(stderr,"usage: isdntrace -a -b -d -f <file> -h -i -l -n <val> -o -p <file> -r -u <unit>\n");
|
|
fprintf(stderr," -B -P -R <unit> -T <unit>\n");
|
|
fprintf(stderr," -a analyzer mode ................................... (default off)\n");
|
|
fprintf(stderr," -b switch B channel trace on ....................... (default off)\n");
|
|
fprintf(stderr," -d switch D channel trace off ....................... (default on)\n");
|
|
fprintf(stderr," -f <file> write output to file filename ............ (default %s0)\n", DECODE_FILE_NAME);
|
|
fprintf(stderr," -h don't print header for each message ............. (default off)\n");
|
|
fprintf(stderr," -i print I.430 (layer 1) INFO signals .............. (default off)\n");
|
|
fprintf(stderr," -l don't decode low layer Q.921 messages ........... (default off)\n");
|
|
fprintf(stderr," -o don't write output to a file .................... (default off)\n");
|
|
fprintf(stderr," -p <file> specify filename for -B and -P ........ (default %s0)\n", BIN_FILE_NAME);
|
|
fprintf(stderr," -u <unit> specify controller unit number ............... (default unit 0)\n");
|
|
fprintf(stderr," -B write binary trace data to file filename ........ (default off)\n");
|
|
fprintf(stderr," -P playback from binary trace data file ............ (default off)\n");
|
|
fprintf(stderr," -R <unit> analyze Rx controller unit number (for -a) ... (default unit %d)\n", RxUDEF);
|
|
fprintf(stderr," -T <unit> analyze Tx controller unit number (for -a) ... (default unit %d)\n", TxUDEF);
|
|
fprintf(stderr,"\n");
|
|
exit(1);
|
|
}
|
|
|
|
/* EOF */
|