* redistribute, and modify it as specified in the file "V3VEE_LICENSE".
*/
+#include <string>
+#include <iostream>
+#include <fstream>
+#include <stdio.h>
#include <sstream>
+#ifdef linux
+#include <errno.h>
+#include <sys/types.h>
+#include <unistd.h>
+#elif defined(WIN32) && !defined(__CYGWIN__)
+#endif
+
+#include "vtl.h"
+
+
+#define DEFAULT_LOG_FILE "./status.log"
+#define DEFAULT_CONF_FILE "v3_nbd.ini"
+
+
+#define DEFAULT_PORT 9500
+#define MAX_STRING_SIZE 1024
+#define MAX_DISKS 32
+
+#define LOGFILE_TAG "logfile"
+#define PORT_TAG "port"
+#define DISKS_TAG "disks"
+
+// Turn on 64 bit file offset support (see 'man fseeko')
+#define _FILE_OFFSET_BITS 64
-nbd_config_t g_nbd_conf;
using namespace std;
//using namespace __gnu_cxx;
+typedef enum {INVALID, ISO, RAW} disk_type_t;
+
+struct disk_info {
+ string filename;
+ string tag;
+ disk_type_t type;
+
+ FILE * disk_file;
+};
+
+
+
+struct eqsock {
+ bool operator()(const SOCK sock1, const SOCK sock2) const {
+ return sock1 == sock2;
+ }
+};
+
+
+// Server Port that we'll listen on
+int server_port;
+
+// List of disks being served
+// eqstr from vtl (config.h)
+map<const string, struct disk_info *, eqstr> disks;
+
+
+// List of open connections
+map<SOCK, struct disk_info *, eqsock> conns;
+
+// Enable Debugging
+static const int enable_debug = 1;
+
+
+void usage();
+int config_nbd(string conf_file_name);
+int serv_loop(int serv_sock);
+void setup_disk(string disk_tag, config_t &config_map);
-config_t g_config;
int __main (int argc, char ** argv);
+disk_type_t get_disk_type(const string type_str) {
+
+ if (type_str == "ISO") {
+ return ISO;
+ } else if (type_str == "RAW") {
+ return RAW;
+ }
+
+ return INVALID;
+}
+
+
#ifdef linux
int main(int argc, char ** argv) {
int __main (int argc, char ** argv) {
string config_file;
- SOCK vnet_sock = 0;
- struct vnet_config vnet_info;
- iface_t * iface;
+ SOCK serv_sock;
if (argc > 2) {
usage();
exit(0);
if (argc == 2) {
config_file = string(argv[1]);
} else {
- config_file = VIDS_CONF_FILE;
+ config_file = DEFAULT_CONF_FILE;
}
-
- int * foo;
- int num_ports = GetOpenUdpPorts(&foo);
- int i;
- for (i = 0; i < num_ports; i++) {
- printf("port %d open\n", foo[i]);
- }
-
-
- // g_conf.log_file = "./vids.log";
-
- if (config_vids(config_file) == -1) {
+
+ if (config_nbd(config_file) == -1) {
cerr << "Configuration Error" << endl;
exit(-1);
}
- // JRL DEBUG
- debug_init(g_config[LOGFILE_TAG].c_str());
- JRLDBG("testing...\n");
+ // setup network sockets
+ serv_sock = CreateAndSetupTcpSocket();
+
+ if (serv_sock == -1) {
+ cerr << "Could not create server socket, exiting..." << endl;
+ exit(-1);
+ }
+ if (BindSocket(serv_sock, server_port) == -1) {
+ cerr << "Could not bind socket to port: " << server_port << endl;
+ exit(-1);
+ }
+ if (ListenSocket(serv_sock) == -1) {
+ cerr << "Could not listen on server socket (port=" << server_port << ")" << endl;
+ exit(-1);
+ }
- // Configure pcap filter...
- vids_loop(iface, vnet_sock, &vnet_info);
+ vtl_debug("Starting Server Loop\n");
+ serv_loop(serv_sock);
return 0;
}
#ifdef linux
-int vids_loop(iface_t * iface, SOCK vnet_sock, struct vnet_config * vnet_info) {
- fd_set all_set, read_set;
- int max_fd = -1;
- RawEthernetPacket pkt;
+int serv_loop(int serv_sock) {
+ fd_set all_set, read_set;
+ int max_fd = -1;
+ RawEthernetPacket pkt;
- FD_ZERO(&all_set);
- FD_SET(vnet_sock, &all_set);
- max_fd = vnet_sock;
+ FD_ZERO(&all_set);
+ FD_SET(serv_sock, &all_set);
+ max_fd = serv_sock;
- while (1) {
- int nready = 0;
- read_set = all_set;
- nready = select(max_fd + 1, &read_set, NULL, NULL, NULL);
+ while (1) {
+ int nready = 0;
+ read_set = all_set;
+ nready = select(max_fd + 1, &read_set, NULL, NULL, NULL);
-
- if (nready == -1) {
- if (errno == EINTR) {
- continue;
- } else {
- perror("Select returned error: ");
- break;
- }
- }
+ if (nready == -1) {
+ if (errno == EINTR) {
+ continue;
+ } else {
+ vtl_debug("Select returned error\n");
+ exit(-1);
+ }
+ }
- if (FD_ISSET(vnet_sock, &read_set)) {
- //vnet_recv();
-
+ if (FD_ISSET(serv_sock, &read_set)) {
+ SOCK conn_socket;
+ struct sockaddr_in rem_addr;
+ socklen_t addr_len = sizeof(struct sockaddr_in);
+ // new connection
+ conn_socket = accept(serv_sock, (struct sockaddr *)&rem_addr, &addr_len);
+ if (conn_socket < 0) {
+ if (errno == EINTR) {
+ continue;
+ } else {
+ vtl_debug("Accept returned error\n");
+ exit(-1);
+ }
+ }
+
+ // configure socket
+
+ }
}
- }
- return 0;
+ return 0;
}
#elif WIN32
-int vids_loop(iface_t * iface, SOCK vnet_sock, struct vnet_config * vnet_info) {
+int serv_loop(iface_t * iface, SOCK vnet_sock, struct vnet_config * vnet_info) {
int ret;
RawEthernetPacket pkt;
WSANETWORKEVENTS net_events;
}
if (net_events.lNetworkEvents & FD_READ) {
- JRLDBG("Receied VNET Packet\n");
// we received data
if (vnet_info->link_type == TCP_LINK) {
-int config_vids(string conf_file_name) {
- if (read_config(conf_file_name, &g_config) != 0) {
- return -1;
- }
-
- if (g_config.count(VIDS_SERVER_TAG) > 0) {
- g_vids_conf.server_addr = ToIPAddress(g_config[VIDS_SERVER_TAG].c_str());
- } else {
- printf("Must specify VIDS server address\n");
- return -1;
- }
-
- if (g_config.count(VIDS_SERVER_PORT_TAG) > 0) {
- g_vids_conf.server_port = atoi(g_config[VIDS_SERVER_PORT_TAG].c_str());
- } else {
- printf("Must specify VIDS server port\n");
- return -1;
- }
+int config_nbd(string conf_file_name) {
+ config_t config_map;
+
+ if (read_config(conf_file_name, &config_map) != 0) {
+ cerr << "Could not read config file..." << endl;
+ return -1;
+ }
- if (g_config.count(TCP_PORTS_TAG) > 0) {
- istringstream port_stream(g_config[TCP_PORTS_TAG], istringstream::in);
- int port;
- int i = 0;
+ if (config_map.count(PORT_TAG) > 0) {
+ server_port = atoi(config_map[PORT_TAG].c_str());
+ } else {
+ server_port = DEFAULT_PORT;
+ }
+
+ if (config_map.count(DISKS_TAG) > 0) {
+ istringstream disk_stream(config_map[DISKS_TAG], istringstream::in);
+ string disk_tag;
+ int i = 0;
+
+ while (disk_stream >> disk_tag) {
+
+ if (i >= MAX_DISKS) {
+ cerr << "You specified too many disks, truncating..." << endl;
+ break;
+ }
+
+ setup_disk(disk_tag, config_map);
+ i++;
+ }
+ } else {
+ cerr << "Must specify a set of disks" << endl;
+ return -1;
+ }
- while (port_stream >> port) {
- if (i >= MAX_PORTS) {
- cerr << "You specified too many ports to forward, truncating..." << endl;
- break;
- }
-
- g_vids_conf.tcp_ports[i] = port;
- i++;
+ if (config_map.count(LOGFILE_TAG) == 0) {
+ config_map[LOGFILE_TAG] = DEFAULT_LOG_FILE;
}
+
+ vtl_debug_init(config_map[LOGFILE_TAG], enable_debug);
- g_vids_conf.num_tcp_ports = i;
- }
+ return 0;
+}
+void setup_disk(string disk_tag, config_t &config_map) {
+ string file_tag = disk_tag + ".file";
+ string type_tag = disk_tag + ".type";
+ struct disk_info * disk = (struct disk_info *)malloc(sizeof(struct disk_info));
+ cout << "Setting up " << disk_tag.c_str() << endl;
- if (g_config.count(VIRTUAL_MAC_TAG) > 0) {
- string_to_mac(g_config[VIRTUAL_MAC_TAG].c_str(), g_vids_conf.virtual_mac);
- }
+ if ((config_map.count(file_tag) == 0) &&
+ (config_map.count(type_tag) == 0)) {
+ cerr << "Missing Disk configuration directive for " << disk_tag << endl;
+ }
- if (g_config.count(LOGFILE_TAG) == 0) {
- g_config[LOGFILE_TAG] = DEFAULT_LOG_FILE;
- }
+ disk->tag = disk_tag;
+ disk->filename = config_map[file_tag];
+ disk->type = get_disk_type(config_map[type_tag]);
- if (GetLocalMacAddress(g_config[INTERFACE_TAG], g_vids_conf.local_mac) == -1) {
- cerr << "Could not get local mac address" << endl;
- return -1;
- }
+ if (disk->type == RAW) {
+ disk->disk_file = fopen(disk->filename.c_str(), "w+");
+ } else if (disk->type == ISO) {
+ disk->disk_file = fopen(disk->filename.c_str(), "r");
+ }
+ disks[disk->tag] = disk;
- return 0;
+ return;
}
-int read_config(string conf_file_name) {
- fstream conf_file(conf_file_name.c_str(), ios::in);
- char line[MAX_STRING_SIZE];
- while ((conf_file.getline(line, MAX_STRING_SIZE))) {
- string conf_line = line;
- string tag;
- string value;
- int offset, ltrim_index, rtrim_index;
- if (conf_line[0] == '#') {
- continue;
- }
-
- offset = conf_line.find(":", 0);
- tag = conf_line.substr(0,offset);
-
- // kill white space
- istringstream tag_stream(tag, istringstream::in);
- tag_stream >> tag;
-
- if (tag.empty()) {
- continue;
- }
-
- // basic whitespace trimming, we assume that the config handlers will deal with
- // tokenizing and further formatting
- value = conf_line.substr(offset + 1, conf_line.length() - offset);
- ltrim_index = value.find_first_not_of(" \t");
- rtrim_index = value.find_last_not_of(" \t");
- value = value.substr(ltrim_index, (rtrim_index + 1) - ltrim_index);
-
- g_config[tag] = value;
- }
- return 0;
-}
void usage() {
- cout << "Usage: vids [config_file]" << endl;
+ cout << "Usage: v3_nbd [config_file]" << endl;
return;
}
