initial commit

2 files changed, 170 insertions, 0 deletions

diff --git a/src/client/client.bak b/src/client/client.bak
new file mode 100644
index 0000000..bacfa52
--- /dev/null
+++ b/src/client/client.bak
@@ -0,0 +1,75 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netdb.h>
+#include <arpa/inet.h>
+#include <unistd.h>
+
+#include <math.h>
+
+#include "../include/types.h"
+
+#define FILE_SIZE 721127424
+
+int main(int argc, char *argv[])
+{
+	struct sockaddr_in server;
+	unsigned long addr;
+	int sock;
+
+	// Create socket
+	sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
+	if (sock < 0)
+	{
+		printf("ERROR: Socket failure\n");
+		return EXIT_FAILURE;
+	}
+
+	addr = inet_addr(HOST);
+	memcpy((char *) &server.sin_addr, &addr, sizeof(addr));
+	server.sin_family = AF_INET; // IPv4
+	server.sin_port = htons(PORT); // set port number
+
+	// Connect to server
+	if (connect(sock, (struct sockaddr*) &server, sizeof(server)) < 0)
+	{
+		printf("ERROR: Connect failure\n");
+		return EXIT_FAILURE;
+	}
+
+	// Set data
+	struct dnbd3_request request;
+	struct dnbd3_reply reply;
+	request.num = 0;
+
+	// Send to server
+	int i;
+	off_t blocks = FILE_SIZE / DNBD3_BLOCK_SIZE;
+	int e = log(DNBD3_BLOCK_SIZE) / log(2); // logarithmus dualis
+
+
+	for (i = 0; i < blocks; i++)
+	{
+		request.num = i << e; // multiplie by e
+		send(sock, (char *) &request, sizeof(request), 0);
+		recv(sock, &reply, DNBD3_BLOCK_SIZE, MSG_WAITALL);
+		write(STDOUT_FILENO, reply.data, DNBD3_BLOCK_SIZE);
+	}
+
+	/* Fetch "rest" bytes */
+	int rest = FILE_SIZE % DNBD3_BLOCK_SIZE;
+	if (rest != 0)
+	{
+		request.num = i * DNBD3_BLOCK_SIZE;
+		send(sock, (char *) &request, sizeof(request), 0);
+		recv(sock, &reply, sizeof(struct dnbd3_reply), MSG_WAITALL);
+		write(STDOUT_FILENO, reply.data, rest);
+	}
+
+	close(sock);
+	return EXIT_SUCCESS;
+}
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);
+}