From 1454f8ec3946d36722dc71af91ae8fa7cee0f050 Mon Sep 17 00:00:00 2001
From: David Härdeman <david@hardeman.nu>
Date: Fri, 26 Jun 2020 15:25:52 +0200
Subject: Implement stopall part 2

---
 minecctl/minecctl-rcon.c | 65 ++++++++++++++++++++++++++++++++----------------
 1 file changed, 43 insertions(+), 22 deletions(-)

(limited to 'minecctl')

diff --git a/minecctl/minecctl-rcon.c b/minecctl/minecctl-rcon.c
index f11a20b..f074f3c 100644
--- a/minecctl/minecctl-rcon.c
+++ b/minecctl/minecctl-rcon.c
@@ -107,20 +107,28 @@ rcon_login(struct cfg *cfg, struct server *server)
 	char buf[4096];
 	int32_t rtype;
 	const char *reply;
-	int fd;
+	int fd = -1;
 
 	assert_die(cfg && server, "invalid arguments");
 
-	if (list_empty(&server->rcon_addrs))
-		info("server rcon addrs empty");
+	if (list_empty(&server->rcon_addrs)) {
+		error("%s: rcon address unknown", server->shortname);
+		goto error;
+	}
 
-	fd = connect_any(&server->rcon_addrs, false);
+	fd = connect_any(&server->rcon_addrs, true);
+	if (fd < 0) {
+		error("%s: unable to connect", server->shortname);
+		goto error;
+	}	
 
 	if (!server->rcon_password)
 		server->rcon_password = ask_password();
 
-	if (!server->rcon_password)
-		die("Can't login - no password");
+	if (!server->rcon_password) {
+		error("%s: can't login - password missing", server->shortname);
+		goto error;
+	}
 
 	send_msg(fd, buf, sizeof(buf), RCON_PACKET_LOGIN, server->rcon_password,
 		 &rtype, &reply);
@@ -132,13 +140,22 @@ rcon_login(struct cfg *cfg, struct server *server)
 	server->rcon_password = NULL;
 
 	if (rtype == RCON_PACKET_LOGIN_OK)
-		info("Login ok");
-	else if (rtype == RCON_PACKET_LOGIN_FAIL)
-		die("Login failure, invalid password?");
-	else
-		die("Invalid return code: %" PRIi32, rtype);
+		verbose("%s: login ok", server->shortname);
+	else if (rtype == RCON_PACKET_LOGIN_FAIL) {
+		info("%s: login failure, invalid password?",
+		     server->shortname);
+		goto error;
+	} else {
+		error("%s: invalid return code: %" PRIi32,
+		      server->shortname, rtype);
+		goto error;
+	}
 
 	return fd;
+
+error:
+	close(fd);
+	return -1;
 }
 
 static void
@@ -178,16 +195,6 @@ eat_whitespace(char **pos)
 	*end = '\0';
 }
 
-static void
-get_info(int fd, char *buf, size_t buflen, const char *query, const char **reply)
-{
-	int32_t rtype;
-
-	send_msg(fd, buf, buflen, RCON_PACKET_COMMAND, query, &rtype, reply);
-	if (rtype != RCON_PACKET_RESPONSE)
-		die("Invalid return code: %" PRIi32, rtype);
-}
-
 /* midnight = 18000 */
 #define MCTIME_OFFSET 6000
 #define MCTIME_PER_DAY 24000
@@ -213,10 +220,13 @@ static bool
 get_one_status(int fd, char *buf, size_t len, const char *cmd,
 	       size_t argc, const char *replyscan, const char **reply, ...)
 {
+	int32_t rtype;
 	va_list ap;
 	int r;
 
-	get_info(fd, buf, len, cmd, reply);
+	send_msg(fd, buf, buflen, RCON_PACKET_COMMAND, cmd, &rtype, reply);
+	if (rtype != RCON_PACKET_RESPONSE)
+		die("Invalid return code: %" PRIi32, rtype);
 
 	va_start(ap, reply);
 	r = vsscanf(*reply, replyscan, ap);
@@ -255,6 +265,8 @@ do_status(struct cfg *cfg) {
 
 	server = get_default_server(cfg);
 	fd = rcon_login(cfg, server);
+	if (fd < 0)
+		return;
 
 	if (get_one_status(fd, buf, sizeof(buf), "seed", 1,
 			   "Seed : [ %[^]]]", &reply, tbuf))
@@ -338,6 +350,8 @@ stop_one_server(struct cfg *cfg, struct server *server)
 	int fd;
 
 	fd = rcon_login(cfg, server);
+	if (fd < 0)
+		return;
 
 	if (cfg->force_stop) {
 		unsigned current;
@@ -384,6 +398,8 @@ do_pcount(struct cfg *cfg) {
 
 	server = get_default_server(cfg);
 	fd = rcon_login(cfg, server);
+	if (fd < 0)
+		return;
 
 	if (get_player_count(fd, &current, &max))
 		info("Players: %u/%u", current, max);
@@ -401,6 +417,8 @@ do_console(struct cfg *cfg)
 
 	server = get_default_server(cfg);
 	fd = rcon_login(cfg, server);
+	if (fd < 0)
+		return;
 
 	prompt = alloca(strlen(program_invocation_short_name) +
 			STRLEN(" (") + strlen(server->shortname) + STRLEN("): ") + 1);
@@ -443,6 +461,9 @@ do_command(struct cfg *cfg) {
 
 	server = get_default_server(cfg);
 	fd = rcon_login(cfg, server);
+	if (fd < 0)
+		return;
+
 	send_cmd(fd, cfg->cmdstr);
 }
 
-- 
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