src/server/server.c

   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   Copyright (C) 2007-2010 Øyvind Harboe                                 *
   6  *   oyvind.harboe@zylin.com                                               *
   7  *                                                                         *
   8  *   Copyright (C) 2008 by Spencer Oliver                                  *
   9  *   spen@spen-soft.co.uk                                                  *
  10  *                                                                         *
  11  *   This program is free software; you can redistribute it and/or modify  *
  12  *   it under the terms of the GNU General Public License as published by  *
  13  *   the Free Software Foundation; either version 2 of the License, or     *
  14  *   (at your option) any later version.                                   *
  15  *                                                                         *
  16  *   This program is distributed in the hope that it will be useful,       *
  17  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  18  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  19  *   GNU General Public License for more details.                          *
  20  *                                                                         *
  21  *   You should have received a copy of the GNU General Public License     *
  22  *   along with this program.  If not, see <http://www.gnu.org/licenses/>. *
  23  ***************************************************************************/
  24
  25 #ifdef HAVE_CONFIG_H
  26 #include "config.h"
  27 #endif
  28
  29 #include "server.h"
  30 #include <target/target.h>
  31 #include <target/target_request.h>
  32 #include <target/openrisc/jsp_server.h>
  33 #include "openocd.h"
  34 #include "tcl_server.h"
  35 #include "telnet_server.h"
  36
  37 #include <signal.h>
  38
  39 #ifdef HAVE_NETDB_H
  40 #include <netdb.h>
  41 #endif
  42
  43 #ifndef _WIN32
  44 #include <netinet/tcp.h>
  45 #endif
  46
  47 static struct service *services;
  48
  49 /* shutdown_openocd == 1: exit the main event loop, and quit the
  50  * debugger; 2: quit with non-zero return code */
  51 static int shutdown_openocd;
  52
  53 /* store received signal to exit application by killing ourselves */
  54 static int last_signal;
  55
  56 /* set the polling period to 100ms */
  57 static int polling_period = 100;
  58
  59 /* address by name on which to listen for incoming TCP/IP connections */
  60 static char *bindto_name;
  61
  62 static int add_connection(struct service *service, struct command_context *cmd_ctx)
  63 {
  64         socklen_t address_size;
  65         struct connection *c, **p;
  66         int retval;
  67         int flag = 1;
  68
  69         c = malloc(sizeof(struct connection));
  70         c->fd = -1;
  71         c->fd_out = -1;
  72         memset(&c->sin, 0, sizeof(c->sin));
  73         c->cmd_ctx = copy_command_context(cmd_ctx);
  74         c->service = service;
  75         c->input_pending = 0;
  76         c->priv = NULL;
  77         c->next = NULL;
  78
  79         if (service->type == CONNECTION_TCP) {
  80                 address_size = sizeof(c->sin);
  81
  82                 c->fd = accept(service->fd, (struct sockaddr *)&service->sin, &address_size);
  83                 c->fd_out = c->fd;
  84
  85                 /* This increases performance dramatically for e.g. GDB load which
  86                  * does not have a sliding window protocol.
  87                  *
  88                  * Ignore errors from this fn as it probably just means less performance
  89                  */
  90                 setsockopt(c->fd,       /* socket affected */
  91                         IPPROTO_TCP,                    /* set option at TCP level */
  92                         TCP_NODELAY,                    /* name of option */
  93                         (char *)&flag,                  /* the cast is historical cruft */
  94                         sizeof(int));                   /* length of option value */
  95
  96                 LOG_INFO("accepting '%s' connection on tcp/%s", service->name, service->port);
  97                 retval = service->new_connection(c);
  98                 if (retval != ERROR_OK) {
  99                         close_socket(c->fd);
 100                         LOG_ERROR("attempted '%s' connection rejected", service->name);
 101                         command_done(c->cmd_ctx);
 102                         free(c);
 103                         return retval;
 104                 }
 105         } else if (service->type == CONNECTION_STDINOUT) {
 106                 c->fd = service->fd;
 107                 c->fd_out = fileno(stdout);
 108
 109 #ifdef _WIN32
 110                 /* we are using stdin/out so ignore ctrl-c under windoze */
 111                 SetConsoleCtrlHandler(NULL, TRUE);
 112 #endif
 113
 114                 /* do not check for new connections again on stdin */
 115                 service->fd = -1;
 116
 117                 LOG_INFO("accepting '%s' connection from pipe", service->name);
 118                 retval = service->new_connection(c);
 119                 if (retval != ERROR_OK) {
 120                         LOG_ERROR("attempted '%s' connection rejected", service->name);
 121                         command_done(c->cmd_ctx);
 122                         free(c);
 123                         return retval;
 124                 }
 125         } else if (service->type == CONNECTION_PIPE) {
 126                 c->fd = service->fd;
 127                 /* do not check for new connections again on stdin */
 128                 service->fd = -1;
 129
 130                 char *out_file = alloc_printf("%so", service->port);
 131                 c->fd_out = open(out_file, O_WRONLY);
 132                 free(out_file);
 133                 if (c->fd_out == -1) {
 134                         LOG_ERROR("could not open %s", service->port);
 135                         command_done(c->cmd_ctx);
 136                         free(c);
 137                         return ERROR_FAIL;
 138                 }
 139
 140                 LOG_INFO("accepting '%s' connection from pipe %s", service->name, service->port);
 141                 retval = service->new_connection(c);
 142                 if (retval != ERROR_OK) {
 143                         LOG_ERROR("attempted '%s' connection rejected", service->name);
 144                         command_done(c->cmd_ctx);
 145                         free(c);
 146                         return retval;
 147                 }
 148         }
 149
 150         /* add to the end of linked list */
 151         for (p = &service->connections; *p; p = &(*p)->next)
 152                 ;
 153         *p = c;
 154
 155         if (service->max_connections != CONNECTION_LIMIT_UNLIMITED)
 156                 service->max_connections--;
 157
 158         return ERROR_OK;
 159 }
 160
 161 static int remove_connection(struct service *service, struct connection *connection)
 162 {
 163         struct connection **p = &service->connections;
 164         struct connection *c;
 165
 166         /* find connection */
 167         while ((c = *p)) {
 168                 if (c->fd == connection->fd) {
 169                         service->connection_closed(c);
 170                         if (service->type == CONNECTION_TCP)
 171                                 close_socket(c->fd);
 172                         else if (service->type == CONNECTION_PIPE) {
 173                                 /* The service will listen to the pipe again */
 174                                 c->service->fd = c->fd;
 175                         }
 176
 177                         command_done(c->cmd_ctx);
 178
 179                         /* delete connection */
 180                         *p = c->next;
 181                         free(c);
 182
 183                         if (service->max_connections != CONNECTION_LIMIT_UNLIMITED)
 184                                 service->max_connections++;
 185
 186                         break;
 187                 }
 188
 189                 /* redirect p to next list pointer */
 190                 p = &(*p)->next;
 191         }
 192
 193         return ERROR_OK;
 194 }
 195
 196 static void free_service(struct service *c)
 197 {
 198         free(c->name);
 199         free(c->port);
 200         free(c);
 201 }
 202
 203 int add_service(char *name,
 204         const char *port,
 205         int max_connections,
 206         new_connection_handler_t new_connection_handler,
 207         input_handler_t input_handler,
 208         connection_closed_handler_t connection_closed_handler,
 209         void *priv)
 210 {
 211         struct service *c, **p;
 212         struct hostent *hp;
 213         int so_reuseaddr_option = 1;
 214
 215         c = malloc(sizeof(struct service));
 216
 217         c->name = strdup(name);
 218         c->port = strdup(port);
 219         c->max_connections = 1; /* Only TCP/IP ports can support more than one connection */
 220         c->fd = -1;
 221         c->connections = NULL;
 222         c->new_connection = new_connection_handler;
 223         c->input = input_handler;
 224         c->connection_closed = connection_closed_handler;
 225         c->priv = priv;
 226         c->next = NULL;
 227         long portnumber;
 228         if (strcmp(c->port, "pipe") == 0)
 229                 c->type = CONNECTION_STDINOUT;
 230         else {
 231                 char *end;
 232                 portnumber = strtol(c->port, &end, 0);
 233                 if (!*end && (parse_long(c->port, &portnumber) == ERROR_OK)) {
 234                         c->portnumber = portnumber;
 235                         c->type = CONNECTION_TCP;
 236                 } else
 237                         c->type = CONNECTION_PIPE;
 238         }
 239
 240         if (c->type == CONNECTION_TCP) {
 241                 c->max_connections = max_connections;
 242
 243                 c->fd = socket(AF_INET, SOCK_STREAM, 0);
 244                 if (c->fd == -1) {
 245                         LOG_ERROR("error creating socket: %s", strerror(errno));
 246                         free_service(c);
 247                         return ERROR_FAIL;
 248                 }
 249
 250                 setsockopt(c->fd,
 251                         SOL_SOCKET,
 252                         SO_REUSEADDR,
 253                         (void *)&so_reuseaddr_option,
 254                         sizeof(int));
 255
 256                 socket_nonblock(c->fd);
 257
 258                 memset(&c->sin, 0, sizeof(c->sin));
 259                 c->sin.sin_family = AF_INET;
 260
 261                 if (bindto_name == NULL)
 262                         c->sin.sin_addr.s_addr = INADDR_ANY;
 263                 else {
 264                         hp = gethostbyname(bindto_name);
 265                         if (hp == NULL) {
 266                                 LOG_ERROR("couldn't resolve bindto address: %s", bindto_name);
 267                                 close_socket(c->fd);
 268                                 free_service(c);
 269                                 return ERROR_FAIL;
 270                         }
 271                         memcpy(&c->sin.sin_addr, hp->h_addr_list[0], hp->h_length);
 272                 }
 273                 c->sin.sin_port = htons(c->portnumber);
 274
 275                 if (bind(c->fd, (struct sockaddr *)&c->sin, sizeof(c->sin)) == -1) {
 276                         LOG_ERROR("couldn't bind %s to socket on port %d: %s", name, c->portnumber, strerror(errno));
 277                         close_socket(c->fd);
 278                         free_service(c);
 279                         return ERROR_FAIL;
 280                 }
 281
 282 #ifndef _WIN32
 283                 int segsize = 65536;
 284                 setsockopt(c->fd, IPPROTO_TCP, TCP_MAXSEG,  &segsize, sizeof(int));
 285 #endif
 286                 int window_size = 128 * 1024;
 287
 288                 /* These setsockopt()s must happen before the listen() */
 289
 290                 setsockopt(c->fd, SOL_SOCKET, SO_SNDBUF,
 291                         (char *)&window_size, sizeof(window_size));
 292                 setsockopt(c->fd, SOL_SOCKET, SO_RCVBUF,
 293                         (char *)&window_size, sizeof(window_size));
 294
 295                 if (listen(c->fd, 1) == -1) {
 296                         LOG_ERROR("couldn't listen on socket: %s", strerror(errno));
 297                         close_socket(c->fd);
 298                         free_service(c);
 299                         return ERROR_FAIL;
 300                 }
 301
 302                 struct sockaddr_in addr_in;
 303                 addr_in.sin_port = 0;
 304                 socklen_t addr_in_size = sizeof(addr_in);
 305                 if (getsockname(c->fd, (struct sockaddr *)&addr_in, &addr_in_size) == 0)
 306                         LOG_INFO("Listening on port %hu for %s connections",
 307                                  ntohs(addr_in.sin_port), name);
 308         } else if (c->type == CONNECTION_STDINOUT) {
 309                 c->fd = fileno(stdin);
 310
 311 #ifdef _WIN32
 312                 /* for win32 set stdin/stdout to binary mode */
 313                 if (_setmode(_fileno(stdout), _O_BINARY) < 0)
 314                         LOG_WARNING("cannot change stdout mode to binary");
 315                 if (_setmode(_fileno(stdin), _O_BINARY) < 0)
 316                         LOG_WARNING("cannot change stdin mode to binary");
 317                 if (_setmode(_fileno(stderr), _O_BINARY) < 0)
 318                         LOG_WARNING("cannot change stderr mode to binary");
 319 #else
 320                 socket_nonblock(c->fd);
 321 #endif
 322         } else if (c->type == CONNECTION_PIPE) {
 323 #ifdef _WIN32
 324                 /* we currenty do not support named pipes under win32
 325                  * so exit openocd for now */
 326                 LOG_ERROR("Named pipes currently not supported under this os");
 327                 free_service(c);
 328                 return ERROR_FAIL;
 329 #else
 330                 /* Pipe we're reading from */
 331                 c->fd = open(c->port, O_RDONLY | O_NONBLOCK);
 332                 if (c->fd == -1) {
 333                         LOG_ERROR("could not open %s", c->port);
 334                         free_service(c);
 335                         return ERROR_FAIL;
 336                 }
 337 #endif
 338         }
 339
 340         /* add to the end of linked list */
 341         for (p = &services; *p; p = &(*p)->next)
 342                 ;
 343         *p = c;
 344
 345         return ERROR_OK;
 346 }
 347
 348 static void remove_connections(struct service *service)
 349 {
 350         struct connection *connection;
 351
 352         connection = service->connections;
 353
 354         while (connection) {
 355                 struct connection *tmp;
 356
 357                 tmp = connection->next;
 358                 remove_connection(service, connection);
 359                 connection = tmp;
 360         }
 361 }
 362
 363 static int remove_services(void)
 364 {
 365         struct service *c = services;
 366
 367         /* loop service */
 368         while (c) {
 369                 struct service *next = c->next;
 370
 371                 remove_connections(c);
 372
 373                 if (c->name)
 374                         free(c->name);
 375
 376                 if (c->type == CONNECTION_PIPE) {
 377                         if (c->fd != -1)
 378                                 close(c->fd);
 379                 }
 380                 if (c->port)
 381                         free(c->port);
 382
 383                 if (c->priv)
 384                         free(c->priv);
 385
 386                 /* delete service */
 387                 free(c);
 388
 389                 /* remember the last service for unlinking */
 390                 c = next;
 391         }
 392
 393         services = NULL;
 394
 395         return ERROR_OK;
 396 }
 397
 398 int server_loop(struct command_context *command_context)
 399 {
 400         struct service *service;
 401
 402         bool poll_ok = true;
 403
 404         /* used in select() */
 405         fd_set read_fds;
 406         int fd_max;
 407
 408         /* used in accept() */
 409         int retval;
 410
 411 #ifndef _WIN32
 412         if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
 413                 LOG_ERROR("couldn't set SIGPIPE to SIG_IGN");
 414 #endif
 415
 416         while (!shutdown_openocd) {
 417                 /* monitor sockets for activity */
 418                 fd_max = 0;
 419                 FD_ZERO(&read_fds);
 420
 421                 /* add service and connection fds to read_fds */
 422                 for (service = services; service; service = service->next) {
 423                         if (service->fd != -1) {
 424                                 /* listen for new connections */
 425                                 FD_SET(service->fd, &read_fds);
 426
 427                                 if (service->fd > fd_max)
 428                                         fd_max = service->fd;
 429                         }
 430
 431                         if (service->connections) {
 432                                 struct connection *c;
 433
 434                                 for (c = service->connections; c; c = c->next) {
 435                                         /* check for activity on the connection */
 436                                         FD_SET(c->fd, &read_fds);
 437                                         if (c->fd > fd_max)
 438                                                 fd_max = c->fd;
 439                                 }
 440                         }
 441                 }
 442
 443                 struct timeval tv;
 444                 tv.tv_sec = 0;
 445                 if (poll_ok) {
 446                         /* we're just polling this iteration, this is faster on embedded
 447                          * hosts */
 448                         tv.tv_usec = 0;
 449                         retval = socket_select(fd_max + 1, &read_fds, NULL, NULL, &tv);
 450                 } else {
 451                         /* Every 100ms, can be changed with "poll_period" command */
 452                         tv.tv_usec = polling_period * 1000;
 453                         /* Only while we're sleeping we'll let others run */
 454                         openocd_sleep_prelude();
 455                         kept_alive();
 456                         retval = socket_select(fd_max + 1, &read_fds, NULL, NULL, &tv);
 457                         openocd_sleep_postlude();
 458                 }
 459
 460                 if (retval == -1) {
 461 #ifdef _WIN32
 462
 463                         errno = WSAGetLastError();
 464
 465                         if (errno == WSAEINTR)
 466                                 FD_ZERO(&read_fds);
 467                         else {
 468                                 LOG_ERROR("error during select: %s", strerror(errno));
 469                                 return ERROR_FAIL;
 470                         }
 471 #else
 472
 473                         if (errno == EINTR)
 474                                 FD_ZERO(&read_fds);
 475                         else {
 476                                 LOG_ERROR("error during select: %s", strerror(errno));
 477                                 return ERROR_FAIL;
 478                         }
 479 #endif
 480                 }
 481
 482                 if (retval == 0) {
 483                         /* We only execute these callbacks when there was nothing to do or we timed
 484                          *out */
 485                         target_call_timer_callbacks();
 486                         process_jim_events(command_context);
 487
 488                         FD_ZERO(&read_fds);     /* eCos leaves read_fds unchanged in this case!  */
 489
 490                         /* We timed out/there was nothing to do, timeout rather than poll next time
 491                          **/
 492                         poll_ok = false;
 493                 } else {
 494                         /* There was something to do, next time we'll just poll */
 495                         poll_ok = true;
 496                 }
 497
 498                 /* This is a simple back-off algorithm where we immediately
 499                  * re-poll if we did something this time around.
 500                  *
 501                  * This greatly improves performance of DCC.
 502                  */
 503                 poll_ok = poll_ok || target_got_message();
 504
 505                 for (service = services; service; service = service->next) {
 506                         /* handle new connections on listeners */
 507                         if ((service->fd != -1)
 508                             && (FD_ISSET(service->fd, &read_fds))) {
 509                                 if (service->max_connections != 0)
 510                                         add_connection(service, command_context);
 511                                 else {
 512                                         if (service->type == CONNECTION_TCP) {
 513                                                 struct sockaddr_in sin;
 514                                                 socklen_t address_size = sizeof(sin);
 515                                                 int tmp_fd;
 516                                                 tmp_fd = accept(service->fd,
 517                                                                 (struct sockaddr *)&service->sin,
 518                                                                 &address_size);
 519                                                 close_socket(tmp_fd);
 520                                         }
 521                                         LOG_INFO(
 522                                                 "rejected '%s' connection, no more connections allowed",
 523                                                 service->name);
 524                                 }
 525                         }
 526
 527                         /* handle activity on connections */
 528                         if (service->connections) {
 529                                 struct connection *c;
 530
 531                                 for (c = service->connections; c; ) {
 532                                         if ((FD_ISSET(c->fd, &read_fds)) || c->input_pending) {
 533                                                 retval = service->input(c);
 534                                                 if (retval != ERROR_OK) {
 535                                                         struct connection *next = c->next;
 536                                                         if (service->type == CONNECTION_PIPE ||
 537                                                                         service->type == CONNECTION_STDINOUT) {
 538                                                                 /* if connection uses a pipe then
 539                                                                  * shutdown openocd on error */
 540                                                                 shutdown_openocd = 1;
 541                                                         }
 542                                                         remove_connection(service, c);
 543                                                         LOG_INFO("dropped '%s' connection",
 544                                                                 service->name);
 545                                                         c = next;
 546                                                         continue;
 547                                                 }
 548                                         }
 549                                         c = c->next;
 550                                 }
 551                         }
 552                 }
 553
 554 #ifdef _WIN32
 555                 MSG msg;
 556                 while (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) {
 557                         if (msg.message == WM_QUIT)
 558                                 shutdown_openocd = 1;
 559                 }
 560 #endif
 561         }
 562
 563         return shutdown_openocd != 2 ? ERROR_OK : ERROR_FAIL;
 564 }
 565
 566 #ifdef _WIN32
 567 BOOL WINAPI ControlHandler(DWORD dwCtrlType)
 568 {
 569         shutdown_openocd = 1;
 570         return TRUE;
 571 }
 572 #endif
 573
 574 void sig_handler(int sig)
 575 {
 576         /* store only first signal that hits us */
 577         if (!last_signal)
 578                 last_signal = sig;
 579         shutdown_openocd = 1;
 580 }
 581
 582 int server_preinit(void)
 583 {
 584         /* this currently only calls WSAStartup on native win32 systems
 585          * before any socket operations are performed.
 586          * This is an issue if you call init in your config script */
 587
 588 #ifdef _WIN32
 589         WORD wVersionRequested;
 590         WSADATA wsaData;
 591
 592         wVersionRequested = MAKEWORD(2, 2);
 593
 594         if (WSAStartup(wVersionRequested, &wsaData) != 0) {
 595                 LOG_ERROR("Failed to Open Winsock");
 596                 return ERROR_FAIL;
 597         }
 598
 599         /* register ctrl-c handler */
 600         SetConsoleCtrlHandler(ControlHandler, TRUE);
 601
 602         signal(SIGBREAK, sig_handler);
 603 #endif
 604         signal(SIGINT, sig_handler);
 605         signal(SIGTERM, sig_handler);
 606         signal(SIGABRT, sig_handler);
 607
 608         return ERROR_OK;
 609 }
 610
 611 int server_init(struct command_context *cmd_ctx)
 612 {
 613         int ret = tcl_init();
 614
 615         if (ret != ERROR_OK)
 616                 return ret;
 617
 618         ret = telnet_init("Open On-Chip Debugger");
 619
 620         if (ret != ERROR_OK) {
 621                 remove_services();
 622                 return ret;
 623         }
 624
 625         return ERROR_OK;
 626 }
 627
 628 int server_quit(void)
 629 {
 630         remove_services();
 631         target_quit();
 632
 633 #ifdef _WIN32
 634         WSACleanup();
 635         SetConsoleCtrlHandler(ControlHandler, FALSE);
 636
 637         return ERROR_OK;
 638 #endif
 639
 640         /* return signal number so we can kill ourselves */
 641         return last_signal;
 642 }
 643
 644 void exit_on_signal(int sig)
 645 {
 646 #ifndef _WIN32
 647         /* bring back default system handler and kill yourself */
 648         signal(sig, SIG_DFL);
 649         kill(getpid(), sig);
 650 #endif
 651 }
 652
 653 int connection_write(struct connection *connection, const void *data, int len)
 654 {
 655         if (len == 0) {
 656                 /* successful no-op. Sockets and pipes behave differently here... */
 657                 return 0;
 658         }
 659         if (connection->service->type == CONNECTION_TCP)
 660                 return write_socket(connection->fd_out, data, len);
 661         else
 662                 return write(connection->fd_out, data, len);
 663 }
 664
 665 int connection_read(struct connection *connection, void *data, int len)
 666 {
 667         if (connection->service->type == CONNECTION_TCP)
 668                 return read_socket(connection->fd, data, len);
 669         else
 670                 return read(connection->fd, data, len);
 671 }
 672
 673 /* tell the server we want to shut down */
 674 COMMAND_HANDLER(handle_shutdown_command)
 675 {
 676         LOG_USER("shutdown command invoked");
 677
 678         shutdown_openocd = 1;
 679
 680         if (CMD_ARGC == 1) {
 681                 if (!strcmp(CMD_ARGV[0], "error")) {
 682                         shutdown_openocd = 2;
 683                         return ERROR_FAIL;
 684                 }
 685         }
 686
 687         return ERROR_COMMAND_CLOSE_CONNECTION;
 688 }
 689
 690 COMMAND_HANDLER(handle_poll_period_command)
 691 {
 692         if (CMD_ARGC == 0)
 693                 LOG_WARNING("You need to set a period value");
 694         else
 695                 COMMAND_PARSE_NUMBER(int, CMD_ARGV[0], polling_period);
 696
 697         LOG_INFO("set servers polling period to %ums", polling_period);
 698
 699         return ERROR_OK;
 700 }
 701
 702 COMMAND_HANDLER(handle_bindto_command)
 703 {
 704         switch (CMD_ARGC) {
 705                 case 0:
 706                         command_print(CMD_CTX, "bindto name: %s", bindto_name);
 707                         break;
 708                 case 1:
 709                         free(bindto_name);
 710                         bindto_name = strdup(CMD_ARGV[0]);
 711                         break;
 712                 default:
 713                         return ERROR_COMMAND_SYNTAX_ERROR;
 714         }
 715         return ERROR_OK;
 716 }
 717
 718 static const struct command_registration server_command_handlers[] = {
 719         {
 720                 .name = "shutdown",
 721                 .handler = &handle_shutdown_command,
 722                 .mode = COMMAND_ANY,
 723                 .usage = "",
 724                 .help = "shut the server down",
 725         },
 726         {
 727                 .name = "poll_period",
 728                 .handler = &handle_poll_period_command,
 729                 .mode = COMMAND_ANY,
 730                 .usage = "",
 731                 .help = "set the servers polling period",
 732         },
 733         {
 734                 .name = "bindto",
 735                 .handler = &handle_bindto_command,
 736                 .mode = COMMAND_ANY,
 737                 .usage = "[name]",
 738                 .help = "Specify address by name on which to listen for "
 739                     "incoming TCP/IP connections",
 740         },
 741         COMMAND_REGISTRATION_DONE
 742 };
 743
 744 int server_register_commands(struct command_context *cmd_ctx)
 745 {
 746         int retval = telnet_register_commands(cmd_ctx);
 747         if (ERROR_OK != retval)
 748                 return retval;
 749
 750         retval = tcl_register_commands(cmd_ctx);
 751         if (ERROR_OK != retval)
 752                 return retval;
 753
 754         retval = jsp_register_commands(cmd_ctx);
 755         if (ERROR_OK != retval)
 756                 return retval;
 757
 758         return register_commands(cmd_ctx, NULL, server_command_handlers);
 759 }
 760
 761 COMMAND_HELPER(server_port_command, unsigned short *out)
 762 {
 763         switch (CMD_ARGC) {
 764                 case 0:
 765                         command_print(CMD_CTX, "%d", *out);
 766                         break;
 767                 case 1:
 768                 {
 769                         uint16_t port;
 770                         COMMAND_PARSE_NUMBER(u16, CMD_ARGV[0], port);
 771                         *out = port;
 772                         break;
 773                 }
 774                 default:
 775                         return ERROR_COMMAND_SYNTAX_ERROR;
 776         }
 777         return ERROR_OK;
 778 }
 779
 780 COMMAND_HELPER(server_pipe_command, char **out)
 781 {
 782         switch (CMD_ARGC) {
 783                 case 0:
 784                         command_print(CMD_CTX, "%s", *out);
 785                         break;
 786                 case 1:
 787                 {
 788                         if (CMD_CTX->mode == COMMAND_EXEC) {
 789                                 LOG_WARNING("unable to change server port after init");
 790                                 return ERROR_COMMAND_ARGUMENT_INVALID;
 791                         }
 792                         free(*out);
 793                         *out = strdup(CMD_ARGV[0]);
 794                         break;
 795                 }
 796                 default:
 797                         return ERROR_COMMAND_SYNTAX_ERROR;
 798         }
 799         return ERROR_OK;
 800 }