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 unsigned int 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
)
103 /* do not check for new connections again on stdin */
106 LOG_INFO("accepting '%s' connection from pipe", service
->name
);
107 if ((retval
= service
->new_connection(c
)) != ERROR_OK
)
109 LOG_ERROR("attempted '%s' connection rejected", service
->name
);
115 /* add to the end of linked list */
116 for (p
= &service
->connections
; *p
; p
= &(*p
)->next
);
119 service
->max_connections
--;
124 int remove_connection(service_t
*service
, connection_t
*connection
)
126 connection_t
**p
= &service
->connections
;
129 /* find connection */
132 if (c
->fd
== connection
->fd
)
134 service
->connection_closed(c
);
135 if (service
->type
== CONNECTION_TCP
)
137 command_done(c
->cmd_ctx
);
139 /* delete connection */
143 service
->max_connections
++;
147 /* redirect p to next list pointer */
154 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
)
157 int so_reuseaddr_option
= 1;
159 c
= malloc(sizeof(service_t
));
161 c
->name
= strdup(name
);
164 c
->max_connections
= max_connections
;
166 c
->connections
= NULL
;
167 c
->new_connection
= new_connection_handler
;
168 c
->input
= input_handler
;
169 c
->connection_closed
= connection_closed_handler
;
173 if (type
== CONNECTION_TCP
)
175 if ((c
->fd
= socket(AF_INET
, SOCK_STREAM
, 0)) == -1)
177 LOG_ERROR("error creating socket: %s", strerror(errno
));
181 setsockopt(c
->fd
, SOL_SOCKET
, SO_REUSEADDR
, (void*)&so_reuseaddr_option
, sizeof(int));
183 socket_nonblock(c
->fd
);
185 memset(&c
->sin
, 0, sizeof(c
->sin
));
186 c
->sin
.sin_family
= AF_INET
;
187 c
->sin
.sin_addr
.s_addr
= INADDR_ANY
;
188 c
->sin
.sin_port
= htons(port
);
190 if (bind(c
->fd
, (struct sockaddr
*)&c
->sin
, sizeof(c
->sin
)) == -1)
192 LOG_ERROR("couldn't bind to socket: %s", strerror(errno
));
198 setsockopt(c
->fd
, IPPROTO_TCP
, TCP_MAXSEG
, &segsize
, sizeof(int));
200 int window_size
= 128 * 1024;
202 /* These setsockopt()s must happen before the listen() */
204 setsockopt(c
->fd
, SOL_SOCKET
, SO_SNDBUF
,
205 (char *)&window_size
, sizeof(window_size
));
206 setsockopt(c
->fd
, SOL_SOCKET
, SO_RCVBUF
,
207 (char *)&window_size
, sizeof(window_size
));
209 if (listen(c
->fd
, 1) == -1)
211 LOG_ERROR("couldn't listen on socket: %s", strerror(errno
));
215 else if (type
== CONNECTION_PIPE
)
218 c
->fd
= STDIN_FILENO
;
221 /* for win32 set stdin/stdout to binary mode */
222 if (_setmode(_fileno(stdout
), _O_BINARY
) < 0)
223 LOG_WARNING("cannot change stdout mode to binary");
224 if (_setmode(_fileno(stdin
), _O_BINARY
) < 0)
225 LOG_WARNING("cannot change stdin mode to binary");
227 socket_nonblock(c
->fd
);
232 LOG_ERROR("unknown connection type: %d", type
);
236 /* add to the end of linked list */
237 for (p
= &services
; *p
; p
= &(*p
)->next
);
243 int remove_service(unsigned short port
)
245 service_t
**p
= &services
;
264 /* redirect p to next list pointer */
271 int remove_services(void)
273 service_t
*c
= services
;
278 service_t
*next
= c
->next
;
289 /* remember the last service for unlinking */
298 extern void openocd_sleep_prelude(void);
299 extern void openocd_sleep_postlude(void);
301 int server_loop(command_context_t
*command_context
)
305 /* used in select() */
310 /* used in accept() */
314 if (signal(SIGPIPE
, SIG_IGN
) == SIG_ERR
)
315 LOG_ERROR("couldn't set SIGPIPE to SIG_IGN");
318 /* do regular tasks after at most 10ms */
322 while(!shutdown_openocd
)
324 /* monitor sockets for acitvity */
328 /* add service and connection fds to read_fds */
329 for (service
= services
; service
; service
= service
->next
)
331 if (service
->fd
!= -1)
333 /* listen for new connections */
334 FD_SET(service
->fd
, &read_fds
);
336 if (service
->fd
> fd_max
)
337 fd_max
= service
->fd
;
340 if (service
->connections
)
344 for (c
= service
->connections
; c
; c
= c
->next
)
346 /* check for activity on the connection */
347 FD_SET(c
->fd
, &read_fds
);
355 #if BUILD_ECOSBOARD == 0
356 if (server_use_pipes
== 0)
358 /* add STDIN to read_fds */
359 FD_SET(fileno(stdin
), &read_fds
);
364 openocd_sleep_prelude();
367 /* Only while we're sleeping we'll let others run */
368 retval
= select(fd_max
+ 1, &read_fds
, NULL
, NULL
, &tv
);
369 openocd_sleep_postlude();
375 errno
= WSAGetLastError();
377 if (errno
== WSAEINTR
)
381 LOG_ERROR("error during select: %s", strerror(errno
));
392 LOG_ERROR("error during select: %s", strerror(errno
));
398 target_call_timer_callbacks();
399 process_jim_events ();
403 /* do regular tasks after at most 100ms */
406 FD_ZERO(&read_fds
); /* eCos leaves read_fds unchanged in this case! */
409 for (service
= services
; service
; service
= service
->next
)
411 /* handle new connections on listeners */
412 if ((service
->fd
!= -1)
413 && (FD_ISSET(service
->fd
, &read_fds
)))
415 if (service
->max_connections
> 0)
417 add_connection(service
, command_context
);
421 if (service
->type
!= CONNECTION_PIPE
)
423 struct sockaddr_in sin
;
424 unsigned int address_size
= sizeof(sin
);
426 tmp_fd
= accept(service
->fd
, (struct sockaddr
*)&service
->sin
, &address_size
);
427 close_socket(tmp_fd
);
429 LOG_INFO("rejected '%s' connection, no more connections allowed", service
->name
);
433 /* handle activity on connections */
434 if (service
->connections
)
438 for (c
= service
->connections
; c
;)
440 if ((FD_ISSET(c
->fd
, &read_fds
)) || c
->input_pending
)
442 if ((retval
= service
->input(c
)) != ERROR_OK
)
444 connection_t
*next
= c
->next
;
445 if (service
->type
== CONNECTION_PIPE
)
447 /* if connection uses a pipe then shutdown openocd on error */
448 shutdown_openocd
= 1;
450 remove_connection(service
, c
);
451 LOG_INFO("dropped '%s' connection - error %d", service
->name
, retval
);
462 #if BUILD_ECOSBOARD == 0
463 /* check for data on stdin if not using pipes */
464 if (server_use_pipes
== 0)
466 if (FD_ISSET(fileno(stdin
), &read_fds
))
468 if (getc(stdin
) == 'x')
470 shutdown_openocd
= 1;
477 while (PeekMessage(&msg
,NULL
,0,0,PM_REMOVE
))
479 if (msg
.message
== WM_QUIT
)
480 shutdown_openocd
= 1;
489 BOOL WINAPI
ControlHandler(DWORD dwCtrlType
)
491 shutdown_openocd
= 1;
495 void sig_handler(int sig
) {
496 shutdown_openocd
= 1;
500 int server_init(void)
503 WORD wVersionRequested
;
506 wVersionRequested
= MAKEWORD( 2, 2 );
508 if (WSAStartup(wVersionRequested
, &wsaData
) != 0)
510 LOG_ERROR("Failed to Open Winsock");
514 SetConsoleCtrlHandler( ControlHandler
, TRUE
);
516 signal(SIGINT
, sig_handler
);
517 signal(SIGTERM
, sig_handler
);
518 signal(SIGBREAK
, sig_handler
);
519 signal(SIGABRT
, sig_handler
);
525 int server_quit(void)
531 SetConsoleCtrlHandler( ControlHandler
, FALSE
);
537 int server_register_commands(command_context_t
*context
)
539 register_command(context
, NULL
, "shutdown", handle_shutdown_command
,
540 COMMAND_ANY
, "shut the server down");
545 /* tell the server we want to shut down */
546 int handle_shutdown_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
548 shutdown_openocd
= 1;
550 return ERROR_COMMAND_CLOSE_CONNECTION
;
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