static bool
parse_argument( struct listener_info *listener_info, int argc, char *argv[] ) {
int c;
while ( ( c = getopt_long( argc, argv, short_options, long_options, NULL ) ) != -1 ) {
switch ( c ) {
case 'p':
listener_info->listen_port = strtoport( optarg );
if ( listener_info->listen_port == 0 ) {
return false;
}
break;
case 's':
xfree( ( void * ) ( uintptr_t ) listener_info->switch_daemon );
listener_info->switch_daemon = xstrdup( optarg );
break;
default:
usage();
exit( EXIT_SUCCESS );
return false;
break;
}
}
listener_info->switch_daemon_argc = argc - optind;
listener_info->switch_daemon_argv = &argv[ optind ];
return true;
}
int main(int argc, char** argv) {
// create server
int servsock;
struct sockaddr_in servaddr;
unsigned short port = argc >= 2 ? strtoport(argv[PORTNUM]) : DEFPORT;
createserver(&servsock, &servaddr, port);
printf("Server running on port %u.\n", port);
// server will begin accepting clients again after each game ends
for (EVER) {
puts("\nWaiting for players to connect...");
// wait for players to connect, then assign appropriate values
int sockarr[NUMPLAYERS];
struct sockaddr_in addrarr[NUMPLAYERS];
waitforplayers(servsock, sockarr, addrarr);
// parent will close sockets and wait for other players to connect
// child will serve the current game and then terminate
pid_t pid = fork();
if (pid < 0) {
exitwerror("fork", EXIT_ERRNO);
} else if (pid > 0) {
int i;
for (i = 0; i < NUMPLAYERS; ++i) close(sockarr[i]);
continue;
}
// notify players of their player numbers
sendplayernums(sockarr);
// inital direction values
char dirbuffer[SC_STDSIZE];
dirbuffer[PLAYER_1] = RIGHT;
dirbuffer[PLAYER_2] = LEFT;
// keep recieving and sending until a collision signal is recieved
int collided = -1;
while (collided == -1) {
sendvars(sockarr, dirbuffer); // send directions
collided = recvclientsignal(dirbuffer, sockarr); // recieve client information coming back to server socket
}
// determine winner
char winner;
switch (collided) {
case PLAYER_1: winner = PLAYER_2; break;
case PLAYER_2: winner = PLAYER_1; break;
default: winner = 3;
}
// game over, notify clients
endclients(sockarr, winner);
break;
}
return EXIT_SUCCESS;
}
/*
* cmd->arg3 is count of the destination
* cmd->arg1 is the type, random 0, round-robin 1, sticky 2
*/
void
parse_forward(ipfw_insn **cmd, int *ac, char **av[])
{
ipfw_insn_sa *p = (ipfw_insn_sa *)(*cmd);
struct sockaddr_in *sa;
char *tok, *end = '\0';
char *str;
int count, port;
(*cmd)->opcode = O_BASIC_FORWARD;
NEXT_ARG1;
/*
* multiple forward destinations are seperated by colon
* ip address and port are seperated by comma
* e.g. 192.168.1.1:80,192.168.1.2:8080
* 192.168.1.1,192.168.1.2 or keep the port the same
*/
tok = strtok(**av, ",");
sa = &p->sa;
count = 0;
while (tok != NULL) {
sa->sin_len = sizeof(struct sockaddr_in);
sa->sin_family = AF_INET;
sa->sin_port = 0;
str = strchr(tok,':');
if (str != NULL) {
*(str++) = '\0';
port = strtoport(str, &end, 0, 0);
sa->sin_port = (u_short)port;
}
lookup_host(tok, &(sa->sin_addr));
tok = strtok (NULL, ",");
sa++;
count++;
}
(*cmd)->arg3 = count;
if (count == 0) {
errx(EX_DATAERR, "forward `%s' not recognizable", **av);
}
NEXT_ARG1;
if (count > 1) {
if (strcmp(**av, "round-robin") == 0) {
NEXT_ARG1;
(*cmd)->arg1 = 1;
} else if (strcmp(**av, "sticky") == 0) {
NEXT_ARG1;
(*cmd)->arg1 = 2;
} else {
/* random */
(*cmd)->arg1 = 0;
}
}
(*cmd)->len = LEN_OF_IPFWINSN + count * sizeof(struct sockaddr_in);
}
static int
parse_options (int argc, char *argv[], bool has_connection)
{
uint16_t port = GLUSTER_DEFAULT_PORT;
int ret = -1;
int opt = 0;
int option_index = 0;
struct xlator_option *option;
// Reset getopt since other utilities may have called it already.
optind = 0;
while (true) {
opt = getopt_long (argc, argv, "fro:p:", long_options,
&option_index);
if (opt == -1) {
break;
}
switch (opt) {
case 'd':
state->debug = true;
break;
case 'f':
state->force = true;
break;
case 'o':
option = parse_xlator_option (optarg);
if (option == NULL) {
error (0, errno, "%s", optarg);
goto err;
}
if (append_xlator_option (&state->xlator_options, option) == -1) {
error (0, errno, "append_xlator_option: %s", optarg);
goto err;
}
break;
case 'p':
port = strtoport (optarg);
if (port == 0) {
goto out;
}
break;
case 'r':
state->directory = true;
break;
case 'v':
printf ("%s (%s) %s\n%s\n%s\n%s\n",
program_invocation_name,
PACKAGE_NAME,
PACKAGE_VERSION,
COPYRIGHT,
LICENSE,
AUTHORS);
ret = -2;
goto out;
case 'x':
usage ();
ret = -2;
goto out;
default:
goto err;
}
}
if ((argc - option_index) < 2) {
error (0, 0, "missing operand");
goto err;
} else {
// state->url is free'd in do_rm()
state->url = strdup (argv[argc - 1]);
if (state->url == NULL) {
error (0, errno, "strdup");
goto out;
}
// state->gluster_url is free'd in do_rm()
if (has_connection) {
state->gluster_url = gluster_url_init ();
if (state->gluster_url == NULL) {
error (0, errno, "gluster_url_init");
goto out;
}
state->gluster_url->path = strdup (argv[argc - 1]);
if (state->gluster_url->path == NULL) {
error (0, errno, "strdup");
goto out;
}
ret = 0;
goto out;
}
ret = gluster_parse_url (argv[argc - 1], &(state->gluster_url));
if (ret == -1) {
error (0, EINVAL, "%s", state->url);
goto err;
}
state->gluster_url->port = port;
}
goto out;
err:
error (0, 0, "Try --help for more information.");
out:
return ret;
}
static int
parse_options (int argc, char *argv[], bool has_connection)
{
uint16_t port = GLUSTER_DEFAULT_PORT;
int ret = -1;
int opt = 0;
int option_index = 0;
struct xlator_option *option;
// Reset getopt since other utilities may have called it already.
optind = 0;
while (true) {
opt = getopt_long (argc, argv, "do:p:rvx", long_options,
&option_index);
if (opt == -1) {
break;
}
switch (opt) {
case 'd':
state->debug = true;
break;
case 'o':
option = parse_xlator_option (optarg);
if (option == NULL) {
error (0, errno, "%s", optarg);
goto err;
}
if (append_xlator_option (&state->xlator_options, option) == -1) {
error (0, errno, "append_xlator_option: %s", optarg);
goto err;
}
break;
case 'p':
port = strtoport (optarg);
if (port == 0) {
goto err;
}
break;
case 'r':
state->parents = true;
break;
case 'v':
printf ("%s (%s) %s\n%s\n%s\n%s\n",
program_invocation_name,
PACKAGE_NAME,
PACKAGE_VERSION,
COPYRIGHT,
LICENSE,
AUTHORS);
ret = -2;
goto out;
case 'x':
usage ();
ret = -2;
goto out;
default:
goto err;
}
}
if ((argc - option_index) < 2) {
error (0, 0, "missing operand");
goto err;
} else {
state->url = strdup (argv[argc - 1]);
if (state->url == NULL) {
error (0, errno, "strdup");
goto out;
}
if (has_connection) {
state->gluster_url = gluster_url_init ();
if (state->gluster_url == NULL) {
error (0, errno, "gluster_url_init");
goto out;
}
state->gluster_url->path = strdup (argv[argc - 1]);
if (state->gluster_url->path == NULL) {
error (0, errno, "strdup");
goto out;
}
ret = 0;
goto out;
}
ret = gluster_parse_url (argv[argc - 1], &(state->gluster_url));
if (ret == -1) {
error (0, EINVAL, "%s", state->url);
goto err;
}
state->gluster_url->port = port;
// gluster_create_path will not create
// the last directory in a path if that path does not
// include a trailing slash ('/'), so add one if it does not
// exist.
char *path = state->gluster_url->path;
if (path[strlen (path) - 1] != '/') {
strncat (path, "/", strlen (path) + 2);
}
}
goto out;
err:
error (0, 0, "Try --help for more information.");
out:
return ret;
}
int
cli_connect (struct cli_context *ctx)
{
int argc = ctx->argc;
char **argv = ctx->argv;
int ret;
int opt;
int option_index;
struct gluster_url *url = NULL;
glfs_t *fs = NULL;
uint16_t port = GLUSTER_DEFAULT_PORT;
struct xlator_option *xlator_options = NULL;
struct xlator_option *option;
while ((opt = getopt_long (argc, argv, "o:p:", connect_options, &option_index)) != -1) {
switch (opt) {
case 'o':
option = parse_xlator_option (optarg);
if (option == NULL) {
error (0, errno, "%s", optarg);
goto err;
}
if (append_xlator_option (&xlator_options, option) == -1) {
error (0, errno, "append_xlator_option: %s", optarg);
goto err;
}
break;
case 'p':
port = strtoport (optarg);
if (port == 0) {
goto err;
}
break;
default:
goto err;
}
}
ret = gluster_parse_url (argv[argc - 1], &url);
if (ret == -1) {
printf ("Usage: %s [OPTION]... URL\n"
"Connect to a Gluster volume for this session.\n\n"
" -o, --xlator-option=OPTION specify a translator option for the\n"
" connection. Multiple options are supported\n"
" and take the form xlator.key=value.\n"
" -p, --port=PORT specify the port on which to connect\n",
argv[0]);
goto err;
}
url->port = port;
ret = gluster_getfs (&fs, url);
if (ret == -1) {
error (0, errno, "failed to connect to %s/%s", url->host, url->volume);
goto err;
}
ret = apply_xlator_options (fs, &xlator_options);
if (ret == -1) {
error (0, errno, "failed to apply translator options");
goto err;
}
ret = cli_disconnect (ctx);
if (ret == -1) {
error (0, 0, "failed to terminate previous connection");
goto err;
}
ctx->fs = fs;
ctx->url = url;
// TODO(craigcabrey): Look into using asprintf here.
// 5 is the length of the string format: (%s/%s)
size_t length = strlen (ctx->url->host) + strlen (ctx->url->volume) + 5;
ctx->conn_str = malloc (length);
if (ctx->conn_str == NULL) {
error (0, errno, "malloc");
handle_quit (ctx);
}
snprintf (ctx->conn_str,
length,
"(%s/%s)",
ctx->url->host,
ctx->url->volume);
goto out;
err:
ret = -1;
gluster_url_free (url);
out:
return ret;
}
int main(int c, char **v)
{
struct sockaddr_in server_addr, from;
socklen_t fromlen;
fd_set rfds;
struct tunnel_packet *tp;
char buf[MTU];
unsigned int buflen;
int ret;
int tun_fd;
int server_fd;
tp = (struct tunnel_packet *)buf;
if(c < 4) {
fprintf(stderr, "TCP/UDP/ICMP Tunnel over UDP\n"
"%s <hostname> <port> <passphrase>\n", v[0]);
return 0;
}
struct hostent* host_info = gethostbyname(v[1]);
if (host_info == NULL) {
fprintf(stderr, "%s: Invalid hostname or IPv4 address\n", v[1]);
return 1;
}
memset(&server_addr, 0, sizeof(server_addr));
memset(&from, 0, sizeof(from));
memcpy(&server_addr.sin_addr, host_info->h_addr, host_info->h_length);
if(strtoport(v[2], &server_addr.sin_port) == 0) {
fprintf(stderr, "%s: Invalid port\n", v[0]);
return 1;
}
server_addr.sin_family = AF_INET;
tun_fd = tun_create();
server_fd = socket_create(0);
/* Sending authentication */
tp->type = CONTROL_PACKET;
tp->cmd = AUTH_CMD;
strcpy(tp->data, PASSPHRASE);
socket_put_packet(server_fd, &server_addr, sizeof(server_addr), buf, sizeof(struct tunnel_packet) + strlen(PASSPHRASE));
/* Waiting acknowledge */
fromlen = sizeof(struct sockaddr_in);
buflen = socket_get_packet(server_fd, &from, &fromlen, buf, sizeof(buf));
if(tp->type == CONTROL_PACKET) {
if(tp->cmd != OK_CMD) {
puts("Password is incorret");
return 1;
}
} else {
puts("Unexpected packet was received.");
return 1;
}
#ifdef __linux__
exec_script("linux_client.sh", v[1]);
#else
exec_script("osx_client.sh", v[1]);
#endif
puts("+ Auth is OK.\n+ UDP Tunnel is running.");
FD_ZERO(&rfds);
while(1) {
FD_SET(server_fd, &rfds);
FD_SET(tun_fd, &rfds);
ret = select(server_fd+1, &rfds, NULL, NULL, NULL);
if(ret == -1)
break;
if(FD_ISSET(tun_fd, &rfds)) {
buflen = tun_get_packet(tun_fd, tp->data, sizeof(buf)-sizeof(struct tunnel_packet));
tp->type = TRAFFIC_PACKET;
tp->cmd = 0;
socket_put_packet(server_fd, &server_addr, sizeof(server_addr), buf, buflen + sizeof(struct tunnel_packet));
}
if(FD_ISSET(server_fd, &rfds)) {
buflen = socket_get_packet(server_fd, &from, &fromlen, buf, sizeof(buf));
if(server_addr.sin_addr.s_addr == from.sin_addr.s_addr && server_addr.sin_port == from.sin_port)
tun_put_packet(tun_fd, tp->data, buflen-sizeof(struct tunnel_packet));
}
}
return 1;
}
/* The main method. */
int main(int argc, char * argv[]) {
int i;
int port = 80;
struct in_addr address = {0};
/* Parse the arguments: */
for(i = 1; i < argc; i++) {
if(strcmp(argv[i], "--port") == 0) {
i++;
if(i == argc) {
warn("Expected port number after --port option. Continuing with port 80.");
break;
}
port = strtoport(argv[i]);
if(!port) {
warn("Invalid port number specified. Continuing with port 80.");
port = 80;
}
} else if(strcmp(argv[i], "--address") == 0) {
i++;
if(i == argc) {
warn("Expected address after --address option. Continuing with address 0.0.0.0.");
break;
}
if(inet_pton(AF_INET, argv[i], &address) != 1) {
warn("Invalid address specified. Continuing with address 0.0.0.0.");
}
} else {
printf("Unrecognized option %s.\n", argv[i]);
}
}
char str_address[16];
struct sockaddr_in serv_addr;
/* Create the socket: */
s = socket(AF_INET, SOCK_STREAM, 0);
if(s < 0) {
warn("Error opening socket.");
return 1;
}
/* Listen on the socket: */
serv_addr.sin_family = AF_INET;
serv_addr.sin_port = htons(port);
serv_addr.sin_addr = address;
errno = 0;
if(bind(s, (struct sockaddr *) &serv_addr, sizeof serv_addr) < 0) {
if(errno == EADDRINUSE)
warn("Could not bind to port; already in use.");
else
warn("Could not bind to port due to an unknown error.");
return 1;
}
listen(s, 5);
success("Xeric 0.1.0 has started!");
inet_ntop(AF_INET, &serv_addr.sin_addr, str_address, 15);
printf("Listening at %s:%d.\n", str_address, port);
/* Enable the Ctrl+C SIGINT handler so that the socket can be closed */
signal(SIGINT, interrupted);
while(keepRunning) {
accept_client();
}
if(s >= 0) {
close(s);
}
return 0;
}
void
parse_options (int argc, char *argv[])
{
uint16_t port = GLUSTER_DEFAULT_PORT;
int ret = -1;
int opt = 0;
int option_index = 0;
struct xlator_option *option;
while (true) {
opt = getopt_long (argc, argv, "adfo:p:r", long_options,
&option_index);
if (opt == -1) {
break;
}
switch (opt) {
case 'a':
state->append = true;
break;
case 'd':
state->debug = true;
break;
case 'f':
state->overwrite = true;
break;
case 'o':
option = parse_xlator_option (optarg);
if (option == NULL) {
error (0, errno, "%s", optarg);
goto err;
}
if (append_xlator_option (&state->xlator_options, option) == -1) {
error (EXIT_FAILURE, errno, "append_xlator_option: %s", optarg);
}
break;
case 'p':
port = strtoport (optarg);
if (port == 0) {
exit (EXIT_FAILURE);
}
break;
case 'r':
state->parents = true;
break;
case 'v':
printf ("%s (%s) %s\n%s\n%s\n%s\n",
program_invocation_name,
PACKAGE_NAME,
PACKAGE_VERSION,
COPYRIGHT,
LICENSE,
AUTHORS);
exit (EXIT_SUCCESS);
case 'x':
usage (EXIT_SUCCESS);
default:
goto err;
}
}
if ((argc - option_index) < 2) {
error (0, 0, "missing operand");
goto err;
} else {
state->url = strdup (argv[argc - 1]);
if (state->url == NULL) {
error (0, errno, "strdup");
goto out;
}
ret = gluster_parse_url (argv[argc - 1], &(state->gluster_url));
if (ret == -1) {
error (0, EINVAL, "%s", state->url);
goto err;
}
state->gluster_url->port = port;
}
goto out;
err:
error (EXIT_FAILURE, 0, "Try --help for more information.");
out:
return;
}