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 /* set when using pipes rather than tcp */
57 int server_use_pipes
= 0;
59 int add_connection(service_t
*service
, command_context_t
*cmd_ctx
)
61 socklen_t address_size
;
66 c
= malloc(sizeof(connection_t
));
68 memset(&c
->sin
, 0, sizeof(c
->sin
));
69 c
->cmd_ctx
= copy_command_context(cmd_ctx
);
75 if (service
->type
== CONNECTION_TCP
)
77 address_size
= sizeof(c
->sin
);
79 c
->fd
= accept(service
->fd
, (struct sockaddr
*)&service
->sin
, &address_size
);
81 /* This increases performance dramatically for e.g. GDB load which
82 * does not have a sliding window protocol. */
83 retval
=setsockopt(c
->fd
, /* socket affected */
84 IPPROTO_TCP
, /* set option at TCP level */
85 TCP_NODELAY
, /* name of option */
86 (char *)&flag
, /* the cast is historical cruft */
87 sizeof(int)); /* length of option value */
89 LOG_INFO("accepting '%s' connection from %i", service
->name
, c
->sin
.sin_port
);
90 if ((retval
= service
->new_connection(c
)) != ERROR_OK
)
93 LOG_ERROR("attempted '%s' connection rejected", service
->name
);
98 else if (service
->type
== CONNECTION_PIPE
)
102 /* do not check for new connections again on stdin */
105 LOG_INFO("accepting '%s' connection from pipe", service
->name
);
106 if ((retval
= service
->new_connection(c
)) != ERROR_OK
)
108 LOG_ERROR("attempted '%s' connection rejected", service
->name
);
114 /* add to the end of linked list */
115 for (p
= &service
->connections
; *p
; p
= &(*p
)->next
);
118 service
->max_connections
--;
123 int remove_connection(service_t
*service
, connection_t
*connection
)
125 connection_t
**p
= &service
->connections
;
128 /* find connection */
131 if (c
->fd
== connection
->fd
)
133 service
->connection_closed(c
);
134 if (service
->type
== CONNECTION_TCP
)
136 command_done(c
->cmd_ctx
);
138 /* delete connection */
142 service
->max_connections
++;
146 /* redirect p to next list pointer */
153 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
)
156 int so_reuseaddr_option
= 1;
158 c
= malloc(sizeof(service_t
));
160 c
->name
= strdup(name
);
163 c
->max_connections
= max_connections
;
165 c
->connections
= NULL
;
166 c
->new_connection
= new_connection_handler
;
167 c
->input
= input_handler
;
168 c
->connection_closed
= connection_closed_handler
;
172 if (type
== CONNECTION_TCP
)
174 if ((c
->fd
= socket(AF_INET
, SOCK_STREAM
, 0)) == -1)
176 LOG_ERROR("error creating socket: %s", strerror(errno
));
180 setsockopt(c
->fd
, SOL_SOCKET
, SO_REUSEADDR
, (void*)&so_reuseaddr_option
, sizeof(int));
182 socket_nonblock(c
->fd
);
184 memset(&c
->sin
, 0, sizeof(c
->sin
));
185 c
->sin
.sin_family
= AF_INET
;
186 c
->sin
.sin_addr
.s_addr
= INADDR_ANY
;
187 c
->sin
.sin_port
= htons(port
);
189 if (bind(c
->fd
, (struct sockaddr
*)&c
->sin
, sizeof(c
->sin
)) == -1)
191 LOG_ERROR("couldn't bind to socket: %s", strerror(errno
));
197 setsockopt(c
->fd
, IPPROTO_TCP
, TCP_MAXSEG
, &segsize
, sizeof(int));
199 int window_size
= 128 * 1024;
201 /* These setsockopt()s must happen before the listen() */
203 setsockopt(c
->fd
, SOL_SOCKET
, SO_SNDBUF
,
204 (char *)&window_size
, sizeof(window_size
));
205 setsockopt(c
->fd
, SOL_SOCKET
, SO_RCVBUF
,
206 (char *)&window_size
, sizeof(window_size
));
208 if (listen(c
->fd
, 1) == -1)
210 LOG_ERROR("couldn't listen on socket: %s", strerror(errno
));
214 else if (type
== CONNECTION_PIPE
)
217 c
->fd
= STDIN_FILENO
;
220 /* for win32 set stdin/stdout to binary mode */
221 if (_setmode(_fileno(stdout
), _O_BINARY
) < 0)
222 LOG_WARNING("cannot change stdout mode to binary");
223 if (_setmode(_fileno(stdin
), _O_BINARY
) < 0)
224 LOG_WARNING("cannot change stdin mode to binary");
225 if (_setmode(_fileno(stderr
), _O_BINARY
) < 0)
226 LOG_WARNING("cannot change stderr mode to binary");
228 socket_nonblock(c
->fd
);
233 LOG_ERROR("unknown connection type: %d", type
);
237 /* add to the end of linked list */
238 for (p
= &services
; *p
; p
= &(*p
)->next
);
244 int remove_service(unsigned short port
)
246 service_t
**p
= &services
;
265 /* redirect p to next list pointer */
272 int remove_services(void)
274 service_t
*c
= services
;
279 service_t
*next
= c
->next
;
290 /* remember the last service for unlinking */
299 extern void openocd_sleep_prelude(void);
300 extern void openocd_sleep_postlude(void);
302 int server_loop(command_context_t
*command_context
)
306 /* used in select() */
311 /* used in accept() */
315 if (signal(SIGPIPE
, SIG_IGN
) == SIG_ERR
)
316 LOG_ERROR("couldn't set SIGPIPE to SIG_IGN");
319 /* do regular tasks after at most 10ms */
323 while(!shutdown_openocd
)
325 /* monitor sockets for acitvity */
329 /* add service and connection fds to read_fds */
330 for (service
= services
; service
; service
= service
->next
)
332 if (service
->fd
!= -1)
334 /* listen for new connections */
335 FD_SET(service
->fd
, &read_fds
);
337 if (service
->fd
> fd_max
)
338 fd_max
= service
->fd
;
341 if (service
->connections
)
345 for (c
= service
->connections
; c
; c
= c
->next
)
347 /* check for activity on the connection */
348 FD_SET(c
->fd
, &read_fds
);
356 #if BUILD_ECOSBOARD == 0
357 if (server_use_pipes
== 0)
359 /* add STDIN to read_fds */
360 FD_SET(fileno(stdin
), &read_fds
);
365 openocd_sleep_prelude();
368 /* Only while we're sleeping we'll let others run */
369 retval
= socket_select(fd_max
+ 1, &read_fds
, NULL
, NULL
, &tv
);
370 openocd_sleep_postlude();
376 errno
= WSAGetLastError();
378 if (errno
== WSAEINTR
)
382 LOG_ERROR("error during select: %s", strerror(errno
));
393 LOG_ERROR("error during select: %s", strerror(errno
));
399 target_call_timer_callbacks();
400 process_jim_events ();
404 /* do regular tasks after at most 100ms */
407 FD_ZERO(&read_fds
); /* eCos leaves read_fds unchanged in this case! */
410 for (service
= services
; service
; service
= service
->next
)
412 /* handle new connections on listeners */
413 if ((service
->fd
!= -1)
414 && (FD_ISSET(service
->fd
, &read_fds
)))
416 if (service
->max_connections
> 0)
418 add_connection(service
, command_context
);
422 if (service
->type
!= CONNECTION_PIPE
)
424 struct sockaddr_in sin
;
425 socklen_t address_size
= sizeof(sin
);
427 tmp_fd
= accept(service
->fd
, (struct sockaddr
*)&service
->sin
, &address_size
);
428 close_socket(tmp_fd
);
430 LOG_INFO("rejected '%s' connection, no more connections allowed", service
->name
);
434 /* handle activity on connections */
435 if (service
->connections
)
439 for (c
= service
->connections
; c
;)
441 if ((FD_ISSET(c
->fd
, &read_fds
)) || c
->input_pending
)
443 if ((retval
= service
->input(c
)) != ERROR_OK
)
445 connection_t
*next
= c
->next
;
446 if (service
->type
== CONNECTION_PIPE
)
448 /* if connection uses a pipe then shutdown openocd on error */
449 shutdown_openocd
= 1;
451 remove_connection(service
, c
);
452 LOG_INFO("dropped '%s' connection - error %d", service
->name
, retval
);
463 #if BUILD_ECOSBOARD == 0
464 /* check for data on stdin if not using pipes */
465 if (server_use_pipes
== 0)
467 if (FD_ISSET(fileno(stdin
), &read_fds
))
469 if (getc(stdin
) == 'x')
471 shutdown_openocd
= 1;
478 while (PeekMessage(&msg
,NULL
,0,0,PM_REMOVE
))
480 if (msg
.message
== WM_QUIT
)
481 shutdown_openocd
= 1;
490 BOOL WINAPI
ControlHandler(DWORD dwCtrlType
)
492 shutdown_openocd
= 1;
496 void sig_handler(int sig
) {
497 shutdown_openocd
= 1;
501 int server_init(void)
504 WORD wVersionRequested
;
507 wVersionRequested
= MAKEWORD(2, 2);
509 if (WSAStartup(wVersionRequested
, &wsaData
) != 0)
511 LOG_ERROR("Failed to Open Winsock");
515 if (server_use_pipes
== 0)
517 /* register ctrl-c handler */
518 SetConsoleCtrlHandler(ControlHandler
, TRUE
);
522 /* we are using pipes so ignore ctrl-c */
523 SetConsoleCtrlHandler(NULL
, TRUE
);
526 signal(SIGINT
, sig_handler
);
527 signal(SIGTERM
, sig_handler
);
528 signal(SIGBREAK
, sig_handler
);
529 signal(SIGABRT
, sig_handler
);
535 int server_quit(void)
541 SetConsoleCtrlHandler( ControlHandler
, FALSE
);
547 int server_register_commands(command_context_t
*context
)
549 register_command(context
, NULL
, "shutdown", handle_shutdown_command
,
550 COMMAND_ANY
, "shut the server down");
555 /* tell the server we want to shut down */
556 int handle_shutdown_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
558 shutdown_openocd
= 1;
560 return ERROR_COMMAND_CLOSE_CONNECTION
;
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