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 #include <netinet/tcp.h>
44 service_t *services = NULL;
46 /* shutdown_openocd == 1: exit the main event loop, and quit the debugger */
47 static int shutdown_openocd = 0;
48 int handle_shutdown_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
50 int add_connection(service_t *service, command_context_t *cmd_ctx)
52 unsigned int address_size;
57 c = malloc(sizeof(connection_t));
59 memset(&c->sin, 0, sizeof(c->sin));
60 c->cmd_ctx = copy_command_context(cmd_ctx);
66 address_size = sizeof(c->sin);
68 c->fd = accept(service->fd, (struct sockaddr *)&service->sin, &address_size);
70 /* This increases performance dramatically for e.g. GDB load which
71 * does not have a sliding window protocol. */
72 retval=setsockopt(c->fd, /* socket affected */
73 IPPROTO_TCP, /* set option at TCP level */
74 TCP_NODELAY, /* name of option */
75 (char *)&flag, /* the cast is historical cruft */
76 sizeof(int)); /* length of option value */
78 LOG_INFO("accepting '%s' connection from %i", service->name, c->sin.sin_port);
79 if ((retval = service->new_connection(c)) == ERROR_OK)
85 LOG_ERROR("attempted '%s' connection rejected", service->name);
90 /* add to the end of linked list */
91 for (p = &service->connections; *p; p = &(*p)->next);
94 service->max_connections--;
99 int remove_connection(service_t *service, connection_t *connection)
101 connection_t **p = &service->connections;
104 /* find connection */
107 if (c->fd == connection->fd)
109 service->connection_closed(c);
111 command_done(c->cmd_ctx);
113 /* delete connection */
117 service->max_connections++;
121 /* redirect p to next list pointer */
128 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)
131 int so_reuseaddr_option = 1;
133 c = malloc(sizeof(service_t));
135 c->name = strdup(name);
138 c->max_connections = max_connections;
140 c->connections = NULL;
141 c->new_connection = new_connection_handler;
142 c->input = input_handler;
143 c->connection_closed = connection_closed_handler;
147 if ((c->fd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
149 LOG_ERROR("error creating socket: %s", strerror(errno));
153 setsockopt(c->fd, SOL_SOCKET, SO_REUSEADDR, (void*)&so_reuseaddr_option, sizeof(int));
155 socket_nonblock(c->fd);
157 memset(&c->sin, 0, sizeof(c->sin));
158 c->sin.sin_family = AF_INET;
159 c->sin.sin_addr.s_addr = INADDR_ANY;
160 c->sin.sin_port = htons(port);
162 if (bind(c->fd, (struct sockaddr *)&c->sin, sizeof(c->sin)) == -1)
164 LOG_ERROR("couldn't bind to socket: %s", strerror(errno));
170 setsockopt(c->fd, IPPROTO_TCP, TCP_MAXSEG, &segsize, sizeof(int));
172 int window_size = 128 * 1024;
174 /* These setsockopt()s must happen before the listen() */
176 setsockopt(c->fd, SOL_SOCKET, SO_SNDBUF,
177 (char *)&window_size, sizeof(window_size));
178 setsockopt(c->fd, SOL_SOCKET, SO_RCVBUF,
179 (char *)&window_size, sizeof(window_size));
181 if (listen(c->fd, 1) == -1)
183 LOG_ERROR("couldn't listen on socket: %s", strerror(errno));
187 /* add to the end of linked list */
188 for (p = &services; *p; p = &(*p)->next);
194 int remove_service(unsigned short port)
196 service_t **p = &services;
215 /* redirect p to next list pointer */
222 int remove_services()
224 service_t *c = services;
229 service_t *next = c->next;
240 /* remember the last service for unlinking */
249 extern void lockBigLock();
250 extern void unlockBigLock();
252 int server_loop(command_context_t *command_context)
256 /* used in select() */
261 /* used in accept() */
265 if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
266 LOG_ERROR("couldn't set SIGPIPE to SIG_IGN");
269 // This function is reentrant(workaround for configuration problems)
270 static int lockCount=0;
276 /* do regular tasks after at most 10ms */
280 while(!shutdown_openocd)
282 /* monitor sockets for acitvity */
286 /* add service and connection fds to read_fds */
287 for (service = services; service; service = service->next)
289 if (service->fd != -1)
291 /* listen for new connections */
292 FD_SET(service->fd, &read_fds);
294 if (service->fd > fd_max)
295 fd_max = service->fd;
298 if (service->connections)
302 for (c = service->connections; c; c = c->next)
304 /* check for activity on the connection */
305 FD_SET(c->fd, &read_fds);
313 #ifndef BUILD_ECOSBOARD
314 /* add STDIN to read_fds */
315 FD_SET(fileno(stdin), &read_fds);
319 // Only while we're sleeping we'll let others run
321 retval = select(fd_max + 1, &read_fds, NULL, NULL, &tv);
328 errno = WSAGetLastError();
330 if (errno == WSAEINTR)
334 LOG_ERROR("error during select: %s", strerror(errno));
345 LOG_ERROR("error during select: %s", strerror(errno));
351 target_call_timer_callbacks();
355 /* do regular tasks after at most 100ms */
358 FD_ZERO(&read_fds); /* eCos leaves read_fds unchanged in this case! */
361 for (service = services; service; service = service->next)
363 /* handle new connections on listeners */
364 if ((service->fd != -1)
365 && (FD_ISSET(service->fd, &read_fds)))
367 if (service->max_connections > 0)
369 add_connection(service, command_context);
373 struct sockaddr_in sin;
374 unsigned int address_size = sizeof(sin);
376 tmp_fd = accept(service->fd, (struct sockaddr *)&service->sin, &address_size);
377 close_socket(tmp_fd);
378 LOG_INFO("rejected '%s' connection, no more connections allowed", service->name);
382 /* handle activity on connections */
383 if (service->connections)
387 for (c = service->connections; c;)
389 if ((FD_ISSET(c->fd, &read_fds)) || c->input_pending)
391 if (service->input(c) != ERROR_OK)
393 connection_t *next = c->next;
394 remove_connection(service, c);
395 LOG_INFO("dropped '%s' connection", service->name);
406 #ifndef BUILD_ECOSBOARD
407 if (FD_ISSET(fileno(stdin), &read_fds))
409 if (getc(stdin) == 'x')
411 shutdown_openocd = 1;
417 while (PeekMessage(&msg,NULL,0,0,PM_REMOVE))
419 if (msg.message == WM_QUIT)
420 shutdown_openocd = 1;
433 BOOL WINAPI ControlHandler(DWORD dwCtrlType)
435 shutdown_openocd = 1;
439 void sig_handler(int sig) {
440 shutdown_openocd = 1;
447 WORD wVersionRequested;
450 wVersionRequested = MAKEWORD( 2, 2 );
452 if (WSAStartup(wVersionRequested, &wsaData) != 0)
454 LOG_ERROR("Failed to Open Winsock");
458 SetConsoleCtrlHandler( ControlHandler, TRUE );
460 signal(SIGINT, sig_handler);
461 signal(SIGTERM, sig_handler);
462 signal(SIGBREAK, sig_handler);
463 signal(SIGABRT, sig_handler);
475 SetConsoleCtrlHandler( ControlHandler, FALSE );
481 int server_register_commands(command_context_t *context)
483 register_command(context, NULL, "shutdown", handle_shutdown_command,
484 COMMAND_ANY, "shut the server down");
489 /* tell the server we want to shut down */
490 int handle_shutdown_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
492 shutdown_openocd = 1;
494 return ERROR_COMMAND_CLOSE_CONNECTION;