1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
24 #include "replacements.h"
29 #include "telnet_server.h"
37 #include <sys/types.h>
41 service_t *services = NULL;
43 /* shutdown_openocd == 1: exit the main event loop, and quit the debugger */
44 static int shutdown_openocd = 0;
45 int handle_shutdown_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
47 int add_connection(service_t *service, command_context_t *cmd_ctx)
49 unsigned int address_size;
53 c = malloc(sizeof(connection_t));
55 memset(&c->sin, 0, sizeof(c->sin));
56 c->cmd_ctx = copy_command_context(cmd_ctx);
62 address_size = sizeof(c->sin);
63 c->fd = accept(service->fd, (struct sockaddr *)&service->sin, &address_size);
65 if ((retval = service->new_connection(c)) == ERROR_OK)
67 INFO("accepted '%s' connection from %i", service->name, c->sin.sin_port);
72 INFO("attempted '%s' connection rejected", service->name);
76 if (service->connections)
78 for (p = service->connections; p && p->next; p = p->next);
84 service->connections = c;
87 service->max_connections--;
92 int remove_connection(service_t *service, connection_t *connection)
94 connection_t *c = service->connections;
99 connection_t *next = c->next;
101 if (c->fd == connection->fd)
103 service->connections = next;
104 service->connection_closed(c);
107 command_done(c->cmd_ctx);
109 /* delete connection */
112 service->max_connections++;
116 /* remember the last connection for unlinking */
123 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)
126 int so_reuseaddr_option = 1;
128 c = malloc(sizeof(service_t));
130 c->name = strdup(name);
133 c->max_connections = max_connections;
135 c->connections = NULL;
136 c->new_connection = new_connection_handler;
137 c->input = input_handler;
138 c->connection_closed = connection_closed_handler;
142 if ((c->fd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
144 ERROR("error creating socket: %s", strerror(errno));
148 setsockopt(c->fd, SOL_SOCKET, SO_REUSEADDR, (void*)&so_reuseaddr_option, sizeof(int));
150 socket_nonblock(c->fd);
152 memset(&c->sin, 0, sizeof(c->sin));
153 c->sin.sin_family = AF_INET;
154 c->sin.sin_addr.s_addr = INADDR_ANY;
155 c->sin.sin_port = htons(port);
157 if (bind(c->fd, (struct sockaddr *)&c->sin, sizeof(c->sin)) == -1)
159 ERROR("couldn't bind to socket: %s", strerror(errno));
163 if (listen(c->fd, 1) == -1)
165 ERROR("couldn't listen on socket: %s", strerror(errno));
171 for (p = services; p && p->next; p = p->next);
183 int remove_service(unsigned short port)
185 service_t *c = services;
190 service_t *next = c->next;
204 /* remember the last service for unlinking */
211 int remove_services()
213 service_t *c = services;
218 service_t *next = c->next;
229 /* remember the last service for unlinking */
238 int server_loop(command_context_t *command_context)
242 /* used in select() */
247 /* used in accept() */
251 if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
252 ERROR("couldn't set SIGPIPE to SIG_IGN");
255 /* do regular tasks after at most 10ms */
259 while(!shutdown_openocd)
261 /* monitor sockets for acitvity */
265 /* add service and connection fds to read_fds */
266 for (service = services; service; service = service->next)
268 if (service->fd != -1)
270 /* listen for new connections */
271 FD_SET(service->fd, &read_fds);
273 if (service->fd > fd_max)
274 fd_max = service->fd;
277 if (service->connections)
281 for (c = service->connections; c; c = c->next)
283 /* check for activity on the connection */
284 FD_SET(c->fd, &read_fds);
292 /* add STDIN to read_fds */
293 FD_SET(fileno(stdin), &read_fds);
296 if ((retval = select(fd_max + 1, &read_fds, NULL, NULL, &tv)) == -1)
300 errno = WSAGetLastError();
302 if (errno == WSAEINTR)
306 ERROR("error during select: %s", strerror(errno));
315 ERROR("error during select: %s", strerror(errno));
321 target_call_timer_callbacks();
325 /* do regular tasks after at most 100ms */
330 for (service = services; service; service = service->next)
332 /* handle new connections on listeners */
333 if ((service->fd != -1)
334 && (FD_ISSET(service->fd, &read_fds)))
336 if (service->max_connections > 0)
337 add_connection(service, command_context);
340 struct sockaddr_in sin;
341 unsigned int address_size = sizeof(sin);
343 tmp_fd = accept(service->fd, (struct sockaddr *)&service->sin, &address_size);
344 close_socket(tmp_fd);
345 INFO("rejected '%s' connection, no more connections allowed", service->name);
349 /* handle activity on connections */
350 if (service->connections)
354 for (c = service->connections; c;)
356 if ((FD_ISSET(c->fd, &read_fds)) || c->input_pending)
358 if (service->input(c) != ERROR_OK)
360 connection_t *next = c->next;
361 remove_connection(service, c);
362 INFO("dropped '%s' connection", service->name);
373 if (FD_ISSET(fileno(stdin), &read_fds))
375 if (getc(stdin) == 'x')
377 shutdown_openocd = 1;
382 while (PeekMessage(&msg,NULL,0,0,PM_REMOVE))
384 if (msg.message == WM_QUIT)
385 shutdown_openocd = 1;
394 BOOL WINAPI ControlHandler(DWORD dwCtrlType)
396 shutdown_openocd = 1;
400 void sig_handler(int sig) {
401 shutdown_openocd = 1;
408 WORD wVersionRequested;
411 wVersionRequested = MAKEWORD( 2, 2 );
413 if (WSAStartup(wVersionRequested, &wsaData) != 0)
415 ERROR("Failed to Open Winsock");
419 SetConsoleCtrlHandler( ControlHandler, TRUE );
421 signal(SIGINT, sig_handler);
422 signal(SIGTERM, sig_handler);
423 signal(SIGBREAK, sig_handler);
424 signal(SIGABRT, sig_handler);
437 SetConsoleCtrlHandler( ControlHandler, FALSE );
443 int server_register_commands(command_context_t *context)
445 register_command(context, NULL, "shutdown", handle_shutdown_command,
446 COMMAND_ANY, "shut the server down");
451 /* tell the server we want to shut down */
452 int handle_shutdown_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
454 shutdown_openocd = 1;
456 return ERROR_COMMAND_CLOSE_CONNECTION;