From: Etienne Dechamps <etienne@edechamps.fr>
Date: Sun, 13 Jul 2014 14:54:34 +0000 (+0100)
Subject: Add a non-interactive mode to tinc commands.
X-Git-Tag: release-1.1pre11~58
X-Git-Url: https://www.tinc-vpn.org/git/browse?p=tinc;a=commitdiff_plain;h=cc9203ee75c49360dd29710ac12bb67fe503f97b

Add a non-interactive mode to tinc commands.

Some tinc commands, such as "tinc generate-keys", use the terminal to
ask the user for information. This can be bypassed by making sure
there is no terminal, which is trivial on *nix but might require
jumping through some hoops on Windows depending on how the command is
invoked.

This commit adds a --batch option that ensures tinc will never ask the
user for input, even if it is attached to a terminal.
---

diff --git a/src/tincctl.c b/src/tincctl.c
index 799da0aa..c0c8a256 100644
--- a/src/tincctl.c
+++ b/src/tincctl.c
@@ -75,6 +75,7 @@ char *scriptextension = "";
 static char *prompt;
 
 static struct option const long_options[] = {
+	{"batch", no_argument, NULL, 'b'},
 	{"config", required_argument, NULL, 'c'},
 	{"net", required_argument, NULL, 'n'},
 	{"help", no_argument, NULL, 1},
@@ -100,6 +101,7 @@ static void usage(bool status) {
 	} else {
 		printf("Usage: %s [options] command\n\n", program_name);
 		printf("Valid options are:\n"
+				"  -b, --batch             Don't ask for anything (non-interactive mode).\n"
 				"  -c, --config=DIR        Read configuration options from DIR.\n"
 				"  -n, --net=NETNAME       Connect to net NETNAME.\n"
 				"      --pidfile=FILENAME  Read control cookie from FILENAME.\n"
@@ -158,6 +160,10 @@ static bool parse_options(int argc, char **argv) {
 			case 0:   /* long option */
 				break;
 
+			case 'b':
+				tty = false;
+				break;
+
 			case 'c': /* config file */
 				confbase = xstrdup(optarg);
 				confbasegiven = true;
@@ -2439,6 +2445,7 @@ int main(int argc, char *argv[]) {
 	program_name = argv[0];
 	orig_argv = argv;
 	orig_argc = argc;
+	tty = isatty(0) && isatty(1);
 
 	if(!parse_options(argc, argv))
 		return 1;
@@ -2469,8 +2476,6 @@ int main(int argc, char *argv[]) {
 	srand(time(NULL));
 	crypto_init();
 
-	tty = isatty(0) && isatty(1);
-
 	if(optind >= argc)
 		return cmd_shell(argc, argv);