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can-utils/log2asc.c

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/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
/*
* log2asc.c - convert compact CAN frame logfile to ASC logfile
*
* Copyright (c) 2002-2007 Volkswagen Group Electronic Research
* 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 Volkswagen nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* Alternatively, provided that this notice is retained in full, this
* software may be distributed under the terms of the GNU General
* Public License ("GPL") version 2, in which case the provisions of the
* GPL apply INSTEAD OF those given above.
*
* The provided data structures and external interfaces from this code
* are not restricted to be used by modules with a GPL compatible license.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT
* OWNER 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.
*
* Send feedback to <linux-can@vger.kernel.org>
*
*/
#include <libgen.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <linux/can.h>
#include <net/if.h>
#include <sys/time.h>
#include "lib.h"
#define BUFSZ 400 /* for one line in the logfile */
extern int optind, opterr, optopt;
void print_usage(char *prg)
{
fprintf(stderr, "%s - convert compact CAN frame logfile to ASC logfile.\n", prg);
fprintf(stderr, "Usage: %s <options> [can-interfaces]\n", prg);
fprintf(stderr, "Options:\n");
fprintf(stderr, " -I <infile> (default stdin)\n");
fprintf(stderr, " -O <outfile> (default stdout)\n");
fprintf(stderr, " -4 (reduce decimal place to 4 digits)\n");
fprintf(stderr, " -n (set newline to cr/lf - default lf)\n");
fprintf(stderr, " -f (use CANFD format also for Classic CAN)\n");
fprintf(stderr, " -r (suppress dlc for RTR frames - pre v8.5 tools)\n");
}
void can_asc(struct canfd_frame *cf, int devno, int nortrdlc, char *extra_info, FILE *outfile)
{
int i;
char id[10];
char *dir = "Rx";
fprintf(outfile, "%-2d ", devno); /* channel number left aligned */
if (cf->can_id & CAN_ERR_FLAG)
fprintf(outfile, "ErrorFrame");
else {
sprintf(id, "%X%c", cf->can_id & CAN_EFF_MASK,
(cf->can_id & CAN_EFF_FLAG)?'x':' ');
/* check for extra info */
if (strlen(extra_info) > 0) {
/* only the first char is defined so far */
if (extra_info[0] == 'T')
dir = "Tx";
}
fprintf(outfile, "%-15s %s ", id, dir);
if (cf->can_id & CAN_RTR_FLAG) {
if (nortrdlc)
fprintf(outfile, "r"); /* RTR frame */
else
fprintf(outfile, "r %d", cf->len); /* RTR frame */
} else {
fprintf(outfile, "d %d", cf->len); /* data frame */
for (i = 0; i < cf->len; i++) {
fprintf(outfile, " %02X", cf->data[i]);
}
}
}
}
void canfd_asc(struct canfd_frame *cf, int devno, int mtu, char *extra_info, FILE *outfile)
{
int i;
char id[10];
char *dir = "Rx";
unsigned int flags = 0;
unsigned int dlen = cf->len;
/* relevant flags in Flags field */
#define ASC_F_RTR 0x00000010
#define ASC_F_FDF 0x00001000
#define ASC_F_BRS 0x00002000
#define ASC_F_ESI 0x00004000
/* check for extra info */
if (strlen(extra_info) > 0) {
/* only the first char is defined so far */
if (extra_info[0] == 'T')
dir = "Tx";
}
fprintf(outfile, "CANFD %3d %s ", devno, dir); /* 3 column channel number right aligned */
sprintf(id, "%X%c", cf->can_id & CAN_EFF_MASK,
(cf->can_id & CAN_EFF_FLAG)?'x':' ');
fprintf(outfile, "%11s ", id);
fprintf(outfile, "%c ", (cf->flags & CANFD_BRS)?'1':'0');
fprintf(outfile, "%c ", (cf->flags & CANFD_ESI)?'1':'0');
fprintf(outfile, "%x ", can_len2dlc(dlen));
if (mtu == CAN_MTU) {
if (cf->can_id & CAN_RTR_FLAG) {
/* no data length but dlc for RTR frames */
dlen = 0;
flags = ASC_F_RTR;
}
} else {
flags = ASC_F_FDF;
if (cf->flags & CANFD_BRS)
flags |= ASC_F_BRS;
if (cf->flags & CANFD_ESI)
flags |= ASC_F_ESI;
}
fprintf(outfile, "%2d", dlen);
for (i = 0; i < (int)dlen; i++) {
fprintf(outfile, " %02X", cf->data[i]);
}
fprintf(outfile, " %8d %4d %8X 0 0 0 0 0", 130000, 130, flags);
}
int main(int argc, char **argv)
{
static char buf[BUFSZ], device[BUFSZ], ascframe[BUFSZ], extra_info[BUFSZ];
struct canfd_frame cf;
static struct timeval tv, start_tv;
FILE *infile = stdin;
FILE *outfile = stdout;
static int maxdev, devno, i, crlf, fdfmt, nortrdlc, d4, opt, mtu;
while ((opt = getopt(argc, argv, "I:O:4nfr?")) != -1) {
switch (opt) {
case 'I':
infile = fopen(optarg, "r");
if (!infile) {
perror("infile");
return 1;
}
break;
case 'O':
outfile = fopen(optarg, "w");
if (!outfile) {
perror("outfile");
return 1;
}
break;
case 'n':
crlf = 1;
break;
case 'f':
fdfmt = 1;
break;
case 'r':
nortrdlc = 1;
break;
case '4':
d4 = 1;
break;
case '?':
print_usage(basename(argv[0]));
return 0;
break;
default:
fprintf(stderr, "Unknown option %c\n", opt);
print_usage(basename(argv[0]));
return 1;
break;
}
}
maxdev = argc - optind; /* find real number of CAN devices */
if (!maxdev) {
fprintf(stderr, "no CAN interfaces defined!\n");
print_usage(basename(argv[0]));
return 1;
}
//printf("Found %d CAN devices!\n", maxdev);
while (fgets(buf, BUFSZ-1, infile)) {
if (strlen(buf) >= BUFSZ-2) {
fprintf(stderr, "line too long for input buffer\n");
return 1;
}
/* check for a comment line */
if (buf[0] != '(')
continue;
if (sscanf(buf, "(%lu.%lu) %s %s %s", &tv.tv_sec, &tv.tv_usec,
device, ascframe, extra_info) != 5) {
/* do not evaluate the extra info */
extra_info[0] = 0;
if (sscanf(buf, "(%lu.%lu) %s %s", &tv.tv_sec, &tv.tv_usec,
device, ascframe) != 4) {
fprintf(stderr, "incorrect line format in logfile\n");
return 1;
}
}
if (!start_tv.tv_sec) { /* print banner */
start_tv = tv;
fprintf(outfile, "date %s", ctime(&start_tv.tv_sec));
fprintf(outfile, "base hex timestamps absolute%s",
(crlf)?"\r\n":"\n");
fprintf(outfile, "no internal events logged%s",
(crlf)?"\r\n":"\n");
}
for (i=0, devno=0; i<maxdev; i++) {
if (!strcmp(device, argv[optind+i])) {
devno = i+1; /* start with channel '1' */
break;
}
}
if (devno) { /* only convert for selected CAN devices */
mtu = parse_canframe(ascframe, &cf);
if ((mtu != CAN_MTU) && (mtu != CANFD_MTU))
return 1;
/* we don't support error message frames in CAN FD */
if ((mtu == CANFD_MTU) && (cf.can_id & CAN_ERR_FLAG))
continue;
tv.tv_sec = tv.tv_sec - start_tv.tv_sec;
tv.tv_usec = tv.tv_usec - start_tv.tv_usec;
if (tv.tv_usec < 0)
tv.tv_sec--, tv.tv_usec += 1000000;
if (tv.tv_sec < 0)
tv.tv_sec = tv.tv_usec = 0;
if (d4)
fprintf(outfile, "%4lu.%04lu ", tv.tv_sec, tv.tv_usec/100);
else
fprintf(outfile, "%4lu.%06lu ", tv.tv_sec, tv.tv_usec);
if ((mtu == CAN_MTU) && (fdfmt == 0))
can_asc(&cf, devno, nortrdlc, extra_info, outfile);
else
canfd_asc(&cf, devno, mtu, extra_info, outfile);
if (crlf)
fprintf(outfile, "\r");
fprintf(outfile, "\n");
}
}
fflush(outfile);
fclose(outfile);
fclose(infile);
return 0;
}
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