swanctl: Add --rekey command

src/swanctl/Makefile.am

@@ -4,6 +4,7 @@ swanctl_SOURCES = \
 	command.c command.h \
 	commands/initiate.c \
 	commands/terminate.c \
+	commands/rekey.c \
 	commands/redirect.c \
 	commands/install.c \
 	commands/list_sas.c \

src/swanctl/command.h

@@ -27,7 +27,7 @@
 /**
  * Maximum number of commands (+1).
  */
-#define MAX_COMMANDS 24
+#define MAX_COMMANDS 25
 
 /**
  * Maximum number of options in a command (+3)

src/swanctl/commands/rekey.c

@@ -0,0 +1,125 @@
+/*
+ * Copyright (C) 2017 Tobias Brunner
+ * HSR Hochschule fuer Technik Rapperswil
+ *
+ * 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.
+ */
+
+#include "command.h"
+
+#include <errno.h>
+
+static int rekey(vici_conn_t *conn)
+{
+	vici_req_t *req;
+	vici_res_t *res;
+	command_format_options_t format = COMMAND_FORMAT_NONE;
+	char *arg, *child = NULL, *ike = NULL;
+	int ret = 0, child_id = 0, ike_id = 0;
+
+	while (TRUE)
+	{
+		switch (command_getopt(&arg))
+		{
+			case 'h':
+				return command_usage(NULL);
+			case 'P':
+				format |= COMMAND_FORMAT_PRETTY;
+				/* fall through to raw */
+			case 'r':
+				format |= COMMAND_FORMAT_RAW;
+				continue;
+			case 'c':
+				child = arg;
+				continue;
+			case 'i':
+				ike = arg;
+				continue;
+			case 'C':
+				child_id = atoi(arg);
+				continue;
+			case 'I':
+				ike_id = atoi(arg);
+				continue;
+			case EOF:
+				break;
+			default:
+				return command_usage("invalid --rekey option");
+		}
+		break;
+	}
+
+	req = vici_begin("rekey");
+	if (child)
+	{
+		vici_add_key_valuef(req, "child", "%s", child);
+	}
+	if (ike)
+	{
+		vici_add_key_valuef(req, "ike", "%s", ike);
+	}
+	if (child_id)
+	{
+		vici_add_key_valuef(req, "child-id", "%d", child_id);
+	}
+	if (ike_id)
+	{
+		vici_add_key_valuef(req, "ike-id", "%d", ike_id);
+	}
+	res = vici_submit(req, conn);
+	if (!res)
+	{
+		ret = errno;
+		fprintf(stderr, "rekey request failed: %s\n", strerror(errno));
+		return ret;
+	}
+	if (format & COMMAND_FORMAT_RAW)
+	{
+		vici_dump(res, "rekey reply", format & COMMAND_FORMAT_PRETTY,
+				  stdout);
+	}
+	else
+	{
+		if (streq(vici_find_str(res, "no", "success"), "yes"))
+		{
+			printf("rekey completed successfully\n");
+		}
+		else
+		{
+			fprintf(stderr, "rekey failed: %s\n",
+					vici_find_str(res, "", "errmsg"));
+			ret = 1;
+		}
+	}
+	vici_free_res(res);
+	return ret;
+}
+
+/**
+ * Register the command.
+ */
+static void __attribute__ ((constructor))reg()
+{
+	command_register((command_t) {
+		rekey, 'R', "rekey", "rekey an SA",
+		{"--child <name> | --ike <name | --child-id <id> | --ike-id <id>",
+		 "[--raw|--pretty]"},
+		{
+			{"help",		'h', 0, "show usage information"},
+			{"child",		'c', 1, "rekey by CHILD_SA name"},
+			{"ike",			'i', 1, "rekey by IKE_SA name"},
+			{"child-id",	'C', 1, "rekey by CHILD_SA unique identifier"},
+			{"ike-id",		'I', 1, "rekey by IKE_SA unique identifier"},
+			{"raw",			'r', 0, "dump raw response message"},
+			{"pretty",		'P', 0, "dump raw response message in pretty print"},
+		}
+	});
+}

src/swanctl/swanctl.8.in

@@ -40,6 +40,9 @@ initiate a connection
 .B "\-t, \-\-terminate"
 terminate a connection
 .TP
+.B "\-R, \-\-rekey"
+rekey an SA
+.TP
 .B "\-d, \-\-redirect"
 redirect an IKE_SA
 .TP