swanctl: Add a list-pools command to summarize pool status

src/swanctl/Makefile.am

@@ -9,6 +9,7 @@ swanctl_SOURCES = \
 	commands/list_pols.c \
 	commands/list_conns.c \
 	commands/list_certs.c \
+	commands/list_pools.c \
 	commands/load_conns.c \
 	commands/load_creds.c \
 	commands/load_pools.c \

src/swanctl/command.h

@@ -27,7 +27,7 @@
 /**
  * Maximum number of commands (+1).
  */
-#define MAX_COMMANDS 14
+#define MAX_COMMANDS 15
 
 /**
  * Maximum number of options in a command (+3)

src/swanctl/commands/list_pools.c

@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2014 Martin Willi
+ * Copyright (C) 2014 revosec AG
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <errno.h>
+
+#include "command.h"
+
+CALLBACK(list_pool, int,
+	linked_list_t *list, vici_res_t *res, char *name)
+{
+	char pool[64], leases[32];
+
+	snprintf(pool, sizeof(pool), "%s:", name);
+	snprintf(leases, sizeof(leases), "%s / %s / %s",
+		vici_find_str(res, "", "%s.online", name),
+		vici_find_str(res, "", "%s.offline", name),
+		vici_find_str(res, "", "%s.size", name));
+
+	printf("%-20s %-30s %16s\n",
+		name, vici_find_str(res, "", "%s.base", name), leases);
+
+	return 0;
+}
+
+static int list_pools(vici_conn_t *conn)
+{
+	vici_req_t *req;
+	vici_res_t *res;
+	bool raw = FALSE;
+	char *arg;
+	int ret = 0;
+
+	while (TRUE)
+	{
+		switch (command_getopt(&arg))
+		{
+			case 'h':
+				return command_usage(NULL);
+			case 'r':
+				raw = TRUE;
+				continue;
+			case EOF:
+				break;
+			default:
+				return command_usage("invalid --list-pools option");
+		}
+		break;
+	}
+
+	req = vici_begin("get-pools");
+	res = vici_submit(req, conn);
+	if (!res)
+	{
+		fprintf(stderr, "get-pools request failed: %s\n", strerror(errno));
+		return errno;
+	}
+	if (raw)
+	{
+		vici_dump(res, "get-pools reply", stdout);
+	}
+	else
+	{
+		ret = vici_parse_cb(res, list_pool, NULL, NULL, NULL);
+	}
+	vici_free_res(res);
+	return ret;
+}
+
+/**
+ * Register the command.
+ */
+static void __attribute__ ((constructor))reg()
+{
+	command_register((command_t) {
+		list_pools, 'A', "list-pools", "list loaded pool configurations",
+		{"[--raw]"},
+		{
+			{"help",		'h', 0, "show usage information"},
+			{"raw",			'r', 0, "dump raw response message"},
+		}
+	});
+}