From: Stefan Sperling <stsp@stsp.name>
Subject: Re: tog: ensure stdin is a tty
To: Mark Jamsek <mark@jamsek.com>
Cc: Game of Trees <gameoftrees@openbsd.org>
Date: Sat, 3 Sep 2022 15:37:31 +0200

On Sat, Sep 03, 2022 at 11:24:47PM +1000, Mark Jamsek wrote:
> This was discussed a while back on IRC to handle such things like:
> 
>   $ tog < /dev/null
> 
> ok?

Should 'return 1' or exit(1) on error, not return GOT_ERR_IO.

> diff refs/heads/main refs/heads/fix/tty
> commit - 58381f7013ee220415b44aaf36c549b2f1cd2937
> commit + 1859edcc64e667da877c42b8e0575cedcb812ee6
> blob - d3fe18a13136b64b9e9ba153ae5a2deda0482b9c
> blob + 05c7f2e05a60fb8224d0514b4c65008eb24facb7
> --- tog/tog.c
> +++ tog/tog.c
> @@ -8471,6 +8471,11 @@ main(int argc, char *argv[])
>  	};
>  	char *diff_algo_str = NULL;
>  
> +	if (!isatty(STDIN_FILENO)) {
> +		fprintf(stderr, "%s: tty required\n", getprogname());
> +		return GOT_ERR_IO;
> +	}
> +
>  	setlocale(LC_CTYPE, "");
>  
>  	while ((ch = getopt_long(argc, argv, "+hV", longopts, NULL)) != -1) {
> 
> -- 
> Mark Jamsek <fnc.bsdbox.org>
> GPG: F2FF 13DE 6A06 C471 CA80  E6E2 2930 DC66 86EE CF68