1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * Copyright (C) 2007,2008 Øyvind Harboe *
6 * oyvind.harboe@zylin.com *
8 * Copyright (C) 2008 by Spencer Oliver *
9 * spen@spen-soft.co.uk *
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. *
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. *
21 * You should have received a copy of the GNU General Public License *
22 * along with this program; if not, write to the *
23 * Free Software Foundation, Inc., *
24 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
25 ***************************************************************************/
30 #include "replacements.h"
35 #include "telnet_server.h"
43 #include <sys/types.h>
47 #include <netinet/tcp.h>
50 service_t
*services
= NULL
;
52 /* shutdown_openocd == 1: exit the main event loop, and quit the debugger */
53 static int shutdown_openocd
= 0;
54 int handle_shutdown_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
56 int add_connection(service_t
*service
, command_context_t
*cmd_ctx
)
58 unsigned int address_size
;
63 c
= malloc(sizeof(connection_t
));
65 memset(&c
->sin
, 0, sizeof(c
->sin
));
66 c
->cmd_ctx
= copy_command_context(cmd_ctx
);
72 address_size
= sizeof(c
->sin
);
74 c
->fd
= accept(service
->fd
, (struct sockaddr
*)&service
->sin
, &address_size
);
76 /* This increases performance dramatically for e.g. GDB load which
77 * does not have a sliding window protocol. */
78 retval
=setsockopt(c
->fd
, /* socket affected */
79 IPPROTO_TCP
, /* set option at TCP level */
80 TCP_NODELAY
, /* name of option */
81 (char *)&flag
, /* the cast is historical cruft */
82 sizeof(int)); /* length of option value */
84 LOG_INFO("accepting '%s' connection from %i", service
->name
, c
->sin
.sin_port
);
85 if ((retval
= service
->new_connection(c
)) == ERROR_OK
)
91 LOG_ERROR("attempted '%s' connection rejected", service
->name
);
96 /* add to the end of linked list */
97 for (p
= &service
->connections
; *p
; p
= &(*p
)->next
);
100 service
->max_connections
--;
105 int remove_connection(service_t
*service
, connection_t
*connection
)
107 connection_t
**p
= &service
->connections
;
110 /* find connection */
113 if (c
->fd
== connection
->fd
)
115 service
->connection_closed(c
);
117 command_done(c
->cmd_ctx
);
119 /* delete connection */
123 service
->max_connections
++;
127 /* redirect p to next list pointer */
134 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
)
137 int so_reuseaddr_option
= 1;
139 c
= malloc(sizeof(service_t
));
141 c
->name
= strdup(name
);
144 c
->max_connections
= max_connections
;
146 c
->connections
= NULL
;
147 c
->new_connection
= new_connection_handler
;
148 c
->input
= input_handler
;
149 c
->connection_closed
= connection_closed_handler
;
153 if ((c
->fd
= socket(AF_INET
, SOCK_STREAM
, 0)) == -1)
155 LOG_ERROR("error creating socket: %s", strerror(errno
));
159 setsockopt(c
->fd
, SOL_SOCKET
, SO_REUSEADDR
, (void*)&so_reuseaddr_option
, sizeof(int));
161 socket_nonblock(c
->fd
);
163 memset(&c
->sin
, 0, sizeof(c
->sin
));
164 c
->sin
.sin_family
= AF_INET
;
165 c
->sin
.sin_addr
.s_addr
= INADDR_ANY
;
166 c
->sin
.sin_port
= htons(port
);
168 if (bind(c
->fd
, (struct sockaddr
*)&c
->sin
, sizeof(c
->sin
)) == -1)
170 LOG_ERROR("couldn't bind to socket: %s", strerror(errno
));
176 setsockopt(c
->fd
, IPPROTO_TCP
, TCP_MAXSEG
, &segsize
, sizeof(int));
178 int window_size
= 128 * 1024;
180 /* These setsockopt()s must happen before the listen() */
182 setsockopt(c
->fd
, SOL_SOCKET
, SO_SNDBUF
,
183 (char *)&window_size
, sizeof(window_size
));
184 setsockopt(c
->fd
, SOL_SOCKET
, SO_RCVBUF
,
185 (char *)&window_size
, sizeof(window_size
));
187 if (listen(c
->fd
, 1) == -1)
189 LOG_ERROR("couldn't listen on socket: %s", strerror(errno
));
193 /* add to the end of linked list */
194 for (p
= &services
; *p
; p
= &(*p
)->next
);
200 int remove_service(unsigned short port
)
202 service_t
**p
= &services
;
221 /* redirect p to next list pointer */
228 int remove_services(void)
230 service_t
*c
= services
;
235 service_t
*next
= c
->next
;
246 /* remember the last service for unlinking */
255 extern void openocd_sleep_prelude(void);
256 extern void openocd_sleep_postlude(void);
258 int server_loop(command_context_t
*command_context
)
262 /* used in select() */
267 /* used in accept() */
271 if (signal(SIGPIPE
, SIG_IGN
) == SIG_ERR
)
272 LOG_ERROR("couldn't set SIGPIPE to SIG_IGN");
275 /* do regular tasks after at most 10ms */
279 while(!shutdown_openocd
)
281 /* monitor sockets for acitvity */
285 /* add service and connection fds to read_fds */
286 for (service
= services
; service
; service
= service
->next
)
288 if (service
->fd
!= -1)
290 /* listen for new connections */
291 FD_SET(service
->fd
, &read_fds
);
293 if (service
->fd
> fd_max
)
294 fd_max
= service
->fd
;
297 if (service
->connections
)
301 for (c
= service
->connections
; c
; c
= c
->next
)
303 /* check for activity on the connection */
304 FD_SET(c
->fd
, &read_fds
);
312 #if BUILD_ECOSBOARD == 0
313 /* add STDIN to read_fds */
314 FD_SET(fileno(stdin
), &read_fds
);
318 openocd_sleep_prelude();
320 // Only while we're sleeping we'll let others run
321 retval
= select(fd_max
+ 1, &read_fds
, NULL
, NULL
, &tv
);
322 openocd_sleep_postlude();
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();
352 process_jim_events ();
356 /* do regular tasks after at most 100ms */
359 FD_ZERO(&read_fds
); /* eCos leaves read_fds unchanged in this case! */
362 for (service
= services
; service
; service
= service
->next
)
364 /* handle new connections on listeners */
365 if ((service
->fd
!= -1)
366 && (FD_ISSET(service
->fd
, &read_fds
)))
368 if (service
->max_connections
> 0)
370 add_connection(service
, command_context
);
374 struct sockaddr_in sin
;
375 unsigned int address_size
= sizeof(sin
);
377 tmp_fd
= accept(service
->fd
, (struct sockaddr
*)&service
->sin
, &address_size
);
378 close_socket(tmp_fd
);
379 LOG_INFO("rejected '%s' connection, no more connections allowed", service
->name
);
383 /* handle activity on connections */
384 if (service
->connections
)
388 for (c
= service
->connections
; c
;)
390 if ((FD_ISSET(c
->fd
, &read_fds
)) || c
->input_pending
)
392 if (service
->input(c
) != ERROR_OK
)
394 connection_t
*next
= c
->next
;
395 remove_connection(service
, c
);
396 LOG_INFO("dropped '%s' connection", service
->name
);
407 #if BUILD_ECOSBOARD == 0
408 if (FD_ISSET(fileno(stdin
), &read_fds
))
410 if (getc(stdin
) == 'x')
412 shutdown_openocd
= 1;
418 while (PeekMessage(&msg
,NULL
,0,0,PM_REMOVE
))
420 if (msg
.message
== WM_QUIT
)
421 shutdown_openocd
= 1;
430 BOOL WINAPI
ControlHandler(DWORD dwCtrlType
)
432 shutdown_openocd
= 1;
436 void sig_handler(int sig
) {
437 shutdown_openocd
= 1;
441 int server_init(void)
444 WORD wVersionRequested
;
447 wVersionRequested
= MAKEWORD( 2, 2 );
449 if (WSAStartup(wVersionRequested
, &wsaData
) != 0)
451 LOG_ERROR("Failed to Open Winsock");
455 SetConsoleCtrlHandler( ControlHandler
, TRUE
);
457 signal(SIGINT
, sig_handler
);
458 signal(SIGTERM
, sig_handler
);
459 signal(SIGBREAK
, sig_handler
);
460 signal(SIGABRT
, sig_handler
);
467 int server_quit(void)
473 SetConsoleCtrlHandler( ControlHandler
, FALSE
);
479 int server_register_commands(command_context_t
*context
)
481 register_command(context
, NULL
, "shutdown", handle_shutdown_command
,
482 COMMAND_ANY
, "shut the server down");
487 /* tell the server we want to shut down */
488 int handle_shutdown_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
490 shutdown_openocd
= 1;
492 return ERROR_COMMAND_CLOSE_CONNECTION
;
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