Add a pair of simpleminded utilities for capturing and replaying data on a pty.

This is probably useful for developing new protocols or when gpsfake
may be suspect.

1 files changed, 77 insertions, 0 deletions

diff --git a/contrib/binlog.c b/contrib/binlog.c
new file mode 100644
index 00000000..72c43259
--- /dev/null
+++ b/contrib/binlog.c
@@ -0,0 +1,77 @@
+#include <sys/types.h>
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <termios.h>
+#include <unistd.h>
+
+void spinner(int );
+
+int main(int argc, char **argv) {
+	int speed, n, l, ifd, ofd;
+	struct termios term;
+	char buf[BUFSIZ];
+
+	if (argc != 4){
+		fprintf(stderr, "usage: binlog <speed> <port> <logfile>\n");
+		return 1;
+	}
+
+	speed = atoi(argv[1]);
+	switch (speed) {
+	case 230400:
+	case 115200:
+	case 57600:
+	case 38400:
+	case 28800:
+	case 14400:
+	case 9600:
+	case 4800:
+		break;
+	default:
+		fprintf(stderr, "invalid speed\n");
+		return 1;
+	}
+
+	if ((ifd = open(argv[2], O_RDWR | O_NONBLOCK | O_NOCTTY, 0644)) == -1)
+		err(1, "open");
+
+	if ((ofd = open(argv[3], O_RDWR | O_CREAT | O_APPEND, 0644)) == -1)
+		err(1, "open");
+
+	tcgetattr(ifd, &term);
+	cfmakeraw(&term);
+	cfsetospeed(&term, speed);
+	cfsetispeed(&term, speed);
+	if (tcsetattr(ifd, TCSANOW | TCSAFLUSH, &term) == -1)
+		err(1, "tcsetattr");
+	
+	tcflush(ifd, TCIOFLUSH);
+	n = 0;
+	while (1){
+		l = read(ifd, buf, BUFSIZ);
+		if (l > 0)
+			write(ofd, buf, l);
+		usleep(1000);
+		bzero(buf, BUFSIZ);
+		spinner( n++ );
+	}
+	return 0;
+}
+
+void spinner(int n){
+	char *s = "|/-\\";
+
+	if (n % 4)
+		return;
+
+	n /= 4;
+
+	fprintf(stderr, "\010\010\010\010\010\010\010\010\010\010\010\010\010");
+	fprintf(stderr, "%c %d", s[n%4], n);
+	fflush(stderr);
+}