1 /***************************************************************************
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2 * Copyright (C) 2005 by Dominic Rath *
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3 * Dominic.Rath@gmx.de *
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5 * This program is free software; you can redistribute it and/or modify *
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6 * it under the terms of the GNU General Public License as published by *
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7 * the Free Software Foundation; either version 2 of the License, or *
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8 * (at your option) any later version. *
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10 * This program is distributed in the hope that it will be useful, *
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11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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13 * GNU General Public License for more details. *
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15 * You should have received a copy of the GNU General Public License *
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16 * along with this program; if not, write to the *
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17 * Free Software Foundation, Inc., *
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18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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19 ***************************************************************************/
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20 #ifdef HAVE_CONFIG_H
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24 #include "replacements.h"
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29 #include "telnet_server.h"
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32 #include <command.h>
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37 #include <sys/types.h>
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41 service_t *services = NULL;
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43 /* shutdown_openocd == 1: exit the main event loop, and quit the debugger */
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44 static int shutdown_openocd = 0;
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45 int handle_shutdown_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
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47 int add_connection(service_t *service, command_context_t *cmd_ctx)
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49 unsigned int address_size;
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50 connection_t *c, **p;
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53 c = malloc(sizeof(connection_t));
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55 memset(&c->sin, 0, sizeof(c->sin));
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56 c->cmd_ctx = copy_command_context(cmd_ctx);
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57 c->service = service;
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58 c->input_pending = 0;
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62 address_size = sizeof(c->sin);
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63 c->fd = accept(service->fd, (struct sockaddr *)&service->sin, &address_size);
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65 if ((retval = service->new_connection(c)) == ERROR_OK)
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67 INFO("accepted '%s' connection from %i", service->name, c->sin.sin_port);
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71 close_socket(c->fd);
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72 INFO("attempted '%s' connection rejected", service->name);
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76 /* add to the end of linked list */
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77 for (p = &service->connections; *p; p = &(*p)->next);
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80 service->max_connections--;
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85 int remove_connection(service_t *service, connection_t *connection)
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87 connection_t **p = &service->connections;
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90 /* find connection */
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93 if (c->fd == connection->fd)
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95 service->connection_closed(c);
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96 close_socket(c->fd);
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97 command_done(c->cmd_ctx);
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99 /* delete connection */
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103 service->max_connections++;
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107 /* redirect p to next list pointer */
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114 int add_service(char *name, enum connection_type type, unsigned short port, int max_connections, new_connection_handler_t new_connection_handler, input_handler_t input_handler, connection_closed_handler_t connection_closed_handler, void *priv)
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117 int so_reuseaddr_option = 1;
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119 c = malloc(sizeof(service_t));
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121 c->name = strdup(name);
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124 c->max_connections = max_connections;
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126 c->connections = NULL;
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127 c->new_connection = new_connection_handler;
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128 c->input = input_handler;
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129 c->connection_closed = connection_closed_handler;
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133 if ((c->fd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
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135 ERROR("error creating socket: %s", strerror(errno));
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139 setsockopt(c->fd, SOL_SOCKET, SO_REUSEADDR, (void*)&so_reuseaddr_option, sizeof(int));
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141 socket_nonblock(c->fd);
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143 memset(&c->sin, 0, sizeof(c->sin));
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144 c->sin.sin_family = AF_INET;
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145 c->sin.sin_addr.s_addr = INADDR_ANY;
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146 c->sin.sin_port = htons(port);
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148 if (bind(c->fd, (struct sockaddr *)&c->sin, sizeof(c->sin)) == -1)
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150 ERROR("couldn't bind to socket: %s", strerror(errno));
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154 if (listen(c->fd, 1) == -1)
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156 ERROR("couldn't listen on socket: %s", strerror(errno));
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160 /* add to the end of linked list */
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161 for (p = &services; *p; p = &(*p)->next);
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167 int remove_service(unsigned short port)
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169 service_t **p = &services;
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175 if (c->port == port)
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183 /* delete service */
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188 /* redirect p to next list pointer */
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195 int remove_services()
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197 service_t *c = services;
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202 service_t *next = c->next;
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210 /* delete service */
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213 /* remember the last service for unlinking */
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222 int server_loop(command_context_t *command_context)
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224 service_t *service;
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226 /* used in select() */
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231 /* used in accept() */
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235 if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
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236 ERROR("couldn't set SIGPIPE to SIG_IGN");
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239 /* do regular tasks after at most 10ms */
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241 tv.tv_usec = 10000;
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243 while(!shutdown_openocd)
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245 /* monitor sockets for acitvity */
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247 FD_ZERO(&read_fds);
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249 /* add service and connection fds to read_fds */
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250 for (service = services; service; service = service->next)
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252 if (service->fd != -1)
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254 /* listen for new connections */
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255 FD_SET(service->fd, &read_fds);
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257 if (service->fd > fd_max)
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258 fd_max = service->fd;
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261 if (service->connections)
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265 for (c = service->connections; c; c = c->next)
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267 /* check for activity on the connection */
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268 FD_SET(c->fd, &read_fds);
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269 if (c->fd > fd_max)
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276 /* add STDIN to read_fds */
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277 FD_SET(fileno(stdin), &read_fds);
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280 retval = select(fd_max + 1, &read_fds, NULL, NULL, &tv);
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286 errno = WSAGetLastError();
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288 if (errno == WSAEINTR)
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289 FD_ZERO(&read_fds);
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292 ERROR("error during select: %s", strerror(errno));
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297 if (errno == EINTR)
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299 FD_ZERO(&read_fds);
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303 ERROR("error during select: %s", strerror(errno));
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309 target_call_timer_callbacks();
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313 /* do regular tasks after at most 100ms */
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315 tv.tv_usec = 10000;
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316 FD_ZERO(&read_fds); /* eCos leaves read_fds unchanged in this case! */
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319 for (service = services; service; service = service->next)
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321 /* handle new connections on listeners */
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322 if ((service->fd != -1)
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323 && (FD_ISSET(service->fd, &read_fds)))
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325 if (service->max_connections > 0)
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327 add_connection(service, command_context);
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331 struct sockaddr_in sin;
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332 unsigned int address_size = sizeof(sin);
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334 tmp_fd = accept(service->fd, (struct sockaddr *)&service->sin, &address_size);
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335 close_socket(tmp_fd);
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336 INFO("rejected '%s' connection, no more connections allowed", service->name);
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340 /* handle activity on connections */
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341 if (service->connections)
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345 for (c = service->connections; c;)
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347 if ((FD_ISSET(c->fd, &read_fds)) || c->input_pending)
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349 if (service->input(c) != ERROR_OK)
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351 connection_t *next = c->next;
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352 remove_connection(service, c);
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353 INFO("dropped '%s' connection", service->name);
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364 if (FD_ISSET(fileno(stdin), &read_fds))
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366 if (getc(stdin) == 'x')
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368 shutdown_openocd = 1;
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373 while (PeekMessage(&msg,NULL,0,0,PM_REMOVE))
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375 if (msg.message == WM_QUIT)
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376 shutdown_openocd = 1;
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385 BOOL WINAPI ControlHandler(DWORD dwCtrlType)
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387 shutdown_openocd = 1;
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391 void sig_handler(int sig) {
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392 shutdown_openocd = 1;
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399 WORD wVersionRequested;
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402 wVersionRequested = MAKEWORD( 2, 2 );
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404 if (WSAStartup(wVersionRequested, &wsaData) != 0)
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406 ERROR("Failed to Open Winsock");
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410 SetConsoleCtrlHandler( ControlHandler, TRUE );
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412 signal(SIGINT, sig_handler);
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413 signal(SIGTERM, sig_handler);
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414 signal(SIGBREAK, sig_handler);
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415 signal(SIGABRT, sig_handler);
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428 SetConsoleCtrlHandler( ControlHandler, FALSE );
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434 int server_register_commands(command_context_t *context)
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436 register_command(context, NULL, "shutdown", handle_shutdown_command,
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437 COMMAND_ANY, "shut the server down");
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442 /* tell the server we want to shut down */
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443 int handle_shutdown_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
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445 shutdown_openocd = 1;
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447 return ERROR_COMMAND_CLOSE_CONNECTION;
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