initial commit

1 files changed, 95 insertions, 0 deletions

diff --git a/src/client/client.c b/src/client/client.c
new file mode 100644
index 0000000..87f20d5
--- /dev/null
+++ b/src/client/client.c
@@ -0,0 +1,95 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <sys/ioctl.h>
+#include <netinet/in.h>
+
+#include "../include/types.h"
+#include "../version.h"
+
+void print_help(char* argv_0)
+{
+	printf("Usage: %s -H <host> -p <port> -d <device>\n", argv_0);
+	printf("Start the DNBD3 client.\n");
+	printf("-H or --host \t\t Host running dnbd3-server.\n");
+	printf("-p or --port \t\t Port used by server.\n");
+	printf("-d or --device \t\t DNBD3 device name.\n");
+	printf("-h or --help \t\t Show this help text and quit.\n");
+	printf("-v or --version \t Show version and quit.\n");
+	exit(EXIT_SUCCESS);
+}
+
+void print_version()
+{
+	printf("Version: %s\n", VERSION_STRING);
+	exit(EXIT_SUCCESS);
+}
+
+int main(int argc, char *argv[])
+{
+	char *host = NULL;
+	char *port = NULL;
+	char *dev = NULL;
+
+	int opt = 0;
+	int longIndex = 0;
+	static const char *optString = "H:p:d:hv?";
+	static const struct option longOpts[] =
+	{
+	{ "host", required_argument, NULL, 'H' },
+	{ "port", required_argument, NULL, 'p' },
+	{ "device", required_argument, NULL, 'd' },
+	{ "help", no_argument, NULL, 'h' },
+	{ "version", no_argument, NULL, 'v' }, };
+
+	opt = getopt_long(argc, argv, optString, longOpts, &longIndex);
+
+	while (opt != -1)
+	{
+		switch (opt)
+		{
+		case 'H':
+			host = optarg;
+			break;
+		case 'p':
+			port = optarg;
+			break;
+		case 'd':
+			dev = optarg;
+			break;
+		case 'h':
+			print_help(argv[0]);
+			break;
+		case 'v':
+			print_version();
+			break;
+		case '?':
+			print_help(argv[0]);
+		}
+		opt = getopt_long(argc, argv, optString, longOpts, &longIndex);
+	}
+
+	if (!host || !port || !dev)
+	{
+		printf("FATAL: Not enough information specified\n");
+		exit(EXIT_FAILURE);
+	}
+
+	int fd;
+	fd = open(dev, O_RDONLY);
+
+	if (ioctl(fd, IOCTL_SET_HOST, host) < 0)
+		printf("ERROR: ioctl not successful\n");
+
+	if (ioctl(fd, IOCTL_SET_PORT, port) < 0)
+		printf("ERROR: ioctl not successful\n");
+
+	if (ioctl(fd, IOCTL_CONNECT) < 0)
+		printf("ERROR: ioctl not successful\n");
+
+	close(fd);
+
+	exit(EXIT_SUCCESS);
+}