Add a simple load-tester utility to initiate over control socket

src/libcharon/plugins/load_tester/.gitignore

@@ -0,0 +1 @@
+load-tester

src/libcharon/plugins/load_tester/Makefile.am

@@ -21,3 +21,6 @@ libstrongswan_load_tester_la_SOURCES = \
 	load_tester_diffie_hellman.c load_tester_diffie_hellman.h
 
 libstrongswan_load_tester_la_LDFLAGS = -module -avoid-version
+
+ipsec_PROGRAMS = load-tester
+load_tester_SOURCES = load_tester.c

src/libcharon/plugins/load_tester/load_tester.c

@@ -0,0 +1,104 @@
+/*
+ * Copyright (C) 2012 Martin Willi
+ * Copyright (C) 2012 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.
+ */
+
+#include "load_tester_control.h"
+
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <unistd.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+
+/**
+ * Connect to the daemon, return stream
+ */
+static FILE* make_connection()
+{
+	struct sockaddr_un addr;
+	FILE *stream;
+	int fd;
+
+	addr.sun_family = AF_UNIX;
+	strcpy(addr.sun_path, LOAD_TESTER_SOCKET);
+
+	fd = socket(AF_UNIX, SOCK_SEQPACKET, 0);
+	if (fd < 0)
+	{
+		fprintf(stderr, "opening socket failed: %s\n", strerror(errno));
+		return NULL;
+	}
+	if (connect(fd, (struct sockaddr *)&addr,
+			offsetof(struct sockaddr_un, sun_path) + strlen(addr.sun_path)) < 0)
+	{
+		fprintf(stderr, "connecting to %s failed: %s\n",
+				LOAD_TESTER_SOCKET, strerror(errno));
+		close(fd);
+		return NULL;
+	}
+	stream = fdopen(fd, "r+");
+	if (!stream)
+	{
+		close(fd);
+		return NULL;
+	}
+	return stream;
+}
+
+/**
+ * Initiate load-tests
+ */
+static int initiate(unsigned int count)
+{
+	FILE *stream;
+	char c;
+
+	stream = make_connection();
+	if (!stream)
+	{
+		return 1;
+	}
+
+	fprintf(stream, "%u\n", count);
+
+	while (1)
+	{
+		fflush(stream);
+		c = fgetc(stream);
+		if (c == EOF)
+		{
+			break;
+		}
+		if (fputc(c, stdout) == EOF)
+		{
+			break;
+		}
+		fflush(stdout);
+	}
+	fclose(stream);
+	return 0;
+}
+
+int main(int argc, char *argv[])
+{
+	if (argc == 3 && strcmp(argv[1], "initiate") == 0)
+	{
+		return initiate(atoi(argv[2]));
+	}
+	fprintf(stderr, "Usage:\n");
+	fprintf(stderr, "  %s initiate <count>\n", argv[0]);
+	return 1;
+}