Add "--checksum" in rsync when using "--force"

If the user don't put that option in rsync_options using of "--force"
could be unsafe.
While the probability of failures because of this are low they aren't
zero.

check_dir.c

@@ -129,10 +129,10 @@ mkdir_p(char *path, mode_t omode)
 {
 	struct stat sb;
 	mode_t		numask,
-	         oumask;
+	            oumask;
 	int			first,
-	        last,
-	        retval;
+	            last,
+	            retval;
 	char	   *p;
 
 	p = path;

repmgr.c

@@ -28,6 +28,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <sys/wait.h>
 #include <time.h>
 #include <unistd.h>
 
@@ -125,7 +126,7 @@ main(int argc, char **argv)
 	}
 
 
-	while ((c = getopt_long(argc, argv, "d:h:p:U:D:f:R:w:k:F:I:v", long_options,
+	while ((c = getopt_long(argc, argv, "d:h:p:U:D:f:R:w:k:FIv", long_options,
 	                        &optindex)) != -1)
 	{
 		switch (c)
@@ -160,7 +161,7 @@ main(int argc, char **argv)
 			if (atoi(optarg) > 0)
 				runtime_options.keep_history = atoi(optarg);
 			else
-				runtime_options.keep_history = 0; 
+				runtime_options.keep_history = 0;
 			break;
 		case 'F':
 			runtime_options.force = true;
@@ -255,7 +256,7 @@ main(int argc, char **argv)
 		break;
 	default:
 		log_err(_("%s: too many command-line arguments (first extra is \"%s\")\n"),
-		        progname, argv[optind + 1]);
+		        progname, argv[optind]);
 		usage();
 		exit(ERR_BAD_CONFIG);
 	}
@@ -367,7 +368,7 @@ do_cluster_show(void)
 	conn = establishDBConnection(options.conninfo, true);
 
 	sqlquery_snprintf(sqlquery, "SELECT conninfo FROM %s.repl_nodes;", repmgr_schema);
-    log_debug("cluster show: %s\n", sqlquery);
+	log_debug("cluster show: %s\n", sqlquery);
 	res = PQexec(conn, sqlquery);
 
 	if (PQresultStatus(res) != PGRES_TUPLES_OK)
@@ -403,7 +404,7 @@ static void
 do_cluster_cleanup(void)
 {
 	int			master_id;
-	PGconn	 *conn; 
+	PGconn	 *conn;
 	PGconn	 *master_conn;
 	PGresult *res;
 	char	 sqlquery[QUERY_STR_LEN];
@@ -429,15 +430,15 @@ do_cluster_cleanup(void)
 	if (runtime_options.keep_history > 0)
 	{
 		sqlquery_snprintf(sqlquery, "DELETE FROM %s.repl_monitor "
-									" WHERE age(now(), last_monitor_time) >= '%d days'::interval;", 
-									repmgr_schema, runtime_options.keep_history);
+		                  " WHERE age(now(), last_monitor_time) >= '%d days'::interval;",
+		                  repmgr_schema, runtime_options.keep_history);
 	}
 	else
 	{
 		sqlquery_snprintf(sqlquery, "TRUNCATE TABLE %s.repl_monitor;", repmgr_schema);
 	}
 
-    log_debug("cluster cleanup: %s\n", sqlquery);
+	log_debug("cluster cleanup: %s\n", sqlquery);
 	res = PQexec(master_conn, sqlquery);
 	if (PQresultStatus(res) != PGRES_COMMAND_OK)
 	{
@@ -450,7 +451,7 @@ do_cluster_cleanup(void)
 
 	/* Let's VACUUM the table to avoid autovacuum to be launched in an unexpected hour */
 	sqlquery_snprintf(sqlquery, "VACUUM %s.repl_monitor;", repmgr_schema);
-    log_debug("cluster cleanup: %s\n", sqlquery);
+	log_debug("cluster cleanup: %s\n", sqlquery);
 	res = PQexec(master_conn, sqlquery);
 
 	/* XXX There is any need to check this VACUUM happens without problems? */
@@ -1038,7 +1039,7 @@ do_standby_clone(void)
 		PQfinish(conn);
 		exit(ERR_BAD_CONFIG);
 	}
-	
+
 	/* We need all 4 parameters, and they can be retrieved only by superusers */
 	if (PQntuples(res) != 4)
 	{
@@ -1603,11 +1604,18 @@ test_ssh_connection(char *host, char *remote_user)
 	char script[MAXLEN];
 	int	 r;
 
+	/* On some OS, true is located in a different place than in Linux */
+#ifdef __FreeBSD__
+#define TRUEBIN_PATH "/usr/bin/true"
+#else
+#define TRUEBIN_PATH "/bin/true"
+#endif
+
 	/* Check if we have ssh connectivity to host before trying to rsync */
 	if (!remote_user[0])
-		maxlen_snprintf(script, "ssh -o Batchmode=yes %s /bin/true", host);
+		maxlen_snprintf(script, "ssh -o Batchmode=yes %s %s", host, TRUEBIN_PATH);
 	else
-		maxlen_snprintf(script, "ssh -o Batchmode=yes %s -l %s /bin/true", host, remote_user);
+		maxlen_snprintf(script, "ssh -o Batchmode=yes %s -l %s %s", host, remote_user, TRUEBIN_PATH);
 
 	log_debug(_("command is: %s"), script);
 	r = system(script);
@@ -1633,7 +1641,7 @@ copy_remote_files(char *host, char *remote_user, char *remote_path,
 		maxlen_snprintf(rsync_flags, "%s", options.rsync_options);
 
 	if (runtime_options.force)
-		strcat(rsync_flags, " --delete");
+		strcat(rsync_flags, " --delete --checksum");
 
 	if (!remote_user[0])
 	{
@@ -1825,32 +1833,36 @@ check_parameters_for_action(const int action)
 static void
 write_primary_conninfo(char* line)
 {
-    char host_buf[MAXLEN] = "";
-    char conn_buf[MAXLEN] = "";
-    char user_buf[MAXLEN] = "";
-    char password_buf[MAXLEN] = "";
+	char host_buf[MAXLEN] = "";
+	char conn_buf[MAXLEN] = "";
+	char user_buf[MAXLEN] = "";
+	char password_buf[MAXLEN] = "";
 
-    /* Environment variable for password (UGLY, please use .pgpass!) */
-    const char *password = getenv("PGPASSWORD");
-    if (password != NULL) {
-        maxlen_snprintf(password_buf, " password=%s", password);
-    }
-    else if (require_password) {
-        log_err(_("%s: PGPASSWORD not set, but having one is required\n"),
-            progname);
-        exit(ERR_BAD_PASSWORD);
-    }
+	/* Environment variable for password (UGLY, please use .pgpass!) */
+	const char *password = getenv("PGPASSWORD");
+	if (password != NULL)
+	{
+		maxlen_snprintf(password_buf, " password=%s", password);
+	}
+	else if (require_password)
+	{
+		log_err(_("%s: PGPASSWORD not set, but having one is required\n"),
+		        progname);
+		exit(ERR_BAD_PASSWORD);
+	}
 
-    if (runtime_options.host[0]) {
-        maxlen_snprintf(host_buf, " host=%s", runtime_options.host);
-    }
+	if (runtime_options.host[0])
+	{
+		maxlen_snprintf(host_buf, " host=%s", runtime_options.host);
+	}
 
-    if (runtime_options.username[0]) {
-        maxlen_snprintf(user_buf, " user=%s", runtime_options.username);
-    }
+	if (runtime_options.username[0])
+	{
+		maxlen_snprintf(user_buf, " user=%s", runtime_options.username);
+	}
 
-    maxlen_snprintf(conn_buf, "port=%s%s%s%s",
-        (runtime_options.masterport[0]) ? runtime_options.masterport : "5432", host_buf, user_buf, password_buf);
+	maxlen_snprintf(conn_buf, "port=%s%s%s%s",
+	                (runtime_options.masterport[0]) ? runtime_options.masterport : "5432", host_buf, user_buf, password_buf);
 
-    maxlen_snprintf(line, "primary_conninfo = '%s'", conn_buf);
+	maxlen_snprintf(line, "primary_conninfo = '%s'", conn_buf);
 }

repmgrd.c

@@ -186,7 +186,7 @@ main(int argc, char **argv)
 		/* I need the id of the primary as well as a connection to it */
 		log_info(_("%s Connecting to primary for cluster '%s'\n"),
 		         progname, local_options.cluster_name);
-		primaryConn = getMasterConnection(myLocalConn, 
+		primaryConn = getMasterConnection(myLocalConn,
 		                                  local_options.cluster_name,
 		                                  &primary_options.node,NULL);
 		if (primaryConn == NULL)
@@ -270,7 +270,7 @@ MonitorExecute(void)
 		log_err(_("We couldn't reconnect to master. Now checking if another node has been promoted.\n"));
 		for (connection_retries = 0; connection_retries < 6; connection_retries++)
 		{
-			primaryConn = getMasterConnection(myLocalConn, 
+			primaryConn = getMasterConnection(myLocalConn,
 			                                  local_options.cluster_name, &primary_options.node,NULL);
 			if (PQstatus(primaryConn) == CONNECTION_OK)
 			{