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/*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2 as published by the
* Free Software Foundation. See the LICENSE file included with
* this program for more details.
*/
#define FAST_HDLC_NEED_TABLES
#include "kernel/fasthdlc.h"
#include <stdio.h>
#include <fcntl.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <stdlib.h>
int myread(int fd, char *buf, int len)
{
int sofar;
int res;
sofar = 0;
while(sofar < len) {
res = read(fd, buf + sofar, len - sofar);
if (res < 0)
return res;
sofar += res;
}
return sofar;
}
static inline unsigned char nextchar(int fd)
{
static unsigned char inbuf[2048];
static int bytes = 0;
static int pos = 0;
if (pos >= bytes) {
pos = 0;
bytes = read(fd, inbuf, sizeof(inbuf));
if (bytes < 0) {
fprintf(stderr, "Unable to read more data: %s\n", strerror(errno));
exit(1);
}
if (bytes == 0) {
fprintf(stderr, "-- END OF DATA --\n");
exit(0);
}
}
return inbuf[pos++];
}
int main(int argc, char *argv[])
{
unsigned char decbuf[1024];
unsigned char actual[1024];
int res;
int datain;
int hdlcin;
int hdlccnt;
int x;
struct fasthdlc_state receiver;
fasthdlc_precalc();
fasthdlc_init(&receiver);
hdlcin = open("random.hdlc", O_RDONLY);
if (hdlcin < 0) {
fprintf(stderr, "Unable to open %s: %s\n", "random.hdlc", strerror(errno));
exit(1);
}
datain = open("random.raw", O_RDONLY);
if (datain < 0) {
fprintf(stderr, "Unable to open random.raw: %s\n", strerror(errno));
exit(1);
}
hdlccnt = 0;
for (;;) {
/* Feed in some input */
if (fasthdlc_rx_load(&receiver, nextchar(hdlcin))) {
fprintf(stderr, "Unable to feed receiver :(\n");
exit(1);
}
res = fasthdlc_rx_run(&receiver);
if (res & RETURN_EMPTY_FLAG)
continue;
if (res & RETURN_COMPLETE_FLAG) {
if (hdlccnt) {
if (argc > 1)
printf("Got message of length %d\n", hdlccnt);
res = myread(datain, actual, hdlccnt);
if (res != hdlccnt) {
fprintf(stderr, "Tried to read %d bytes, but read %d instead\n", hdlccnt, res);
exit(1);
}
for (x=0;x<hdlccnt;x++) {
if (actual[x] != decbuf[x]) {
fprintf(stderr, "Found discrepancy at offset %d\n", x);
exit(1);
}
}
/* Reset message receiver */
hdlccnt = 0;
}
} else if (res & RETURN_DISCARD_FLAG) {
if (1 || hdlccnt) {
fprintf(stderr, "Detected abort :(\n");
exit(1);
}
} else {
decbuf[hdlccnt++] = res;
}
}
}
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