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 /* add to the end of linked list */
77 for (p
= &service
->connections
; *p
; p
= &(*p
)->next
);
80 service
->max_connections
--;
85 int remove_connection(service_t
*service
, connection_t
*connection
)
87 connection_t
**p
= &service
->connections
;
93 if (c
->fd
== connection
->fd
)
95 service
->connection_closed(c
);
97 command_done(c
->cmd_ctx
);
99 /* delete connection */
103 service
->max_connections
++;
107 /* redirect p to next list pointer */
114 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
)
117 int so_reuseaddr_option
= 1;
119 c
= malloc(sizeof(service_t
));
121 c
->name
= strdup(name
);
124 c
->max_connections
= max_connections
;
126 c
->connections
= NULL
;
127 c
->new_connection
= new_connection_handler
;
128 c
->input
= input_handler
;
129 c
->connection_closed
= connection_closed_handler
;
133 if ((c
->fd
= socket(AF_INET
, SOCK_STREAM
, 0)) == -1)
135 ERROR("error creating socket: %s", strerror(errno
));
139 setsockopt(c
->fd
, SOL_SOCKET
, SO_REUSEADDR
, (void*)&so_reuseaddr_option
, sizeof(int));
141 socket_nonblock(c
->fd
);
143 memset(&c
->sin
, 0, sizeof(c
->sin
));
144 c
->sin
.sin_family
= AF_INET
;
145 c
->sin
.sin_addr
.s_addr
= INADDR_ANY
;
146 c
->sin
.sin_port
= htons(port
);
148 if (bind(c
->fd
, (struct sockaddr
*)&c
->sin
, sizeof(c
->sin
)) == -1)
150 ERROR("couldn't bind to socket: %s", strerror(errno
));
154 if (listen(c
->fd
, 1) == -1)
156 ERROR("couldn't listen on socket: %s", strerror(errno
));
160 /* add to the end of linked list */
161 for (p
= &services
; *p
; p
= &(*p
)->next
);
167 int remove_service(unsigned short port
)
169 service_t
**p
= services
;
188 /* redirect p to next list pointer */
195 int remove_services()
197 service_t
*c
= services
;
202 service_t
*next
= c
->next
;
213 /* remember the last service for unlinking */
222 int server_loop(command_context_t
*command_context
)
226 /* used in select() */
231 /* used in accept() */
235 if (signal(SIGPIPE
, SIG_IGN
) == SIG_ERR
)
236 ERROR("couldn't set SIGPIPE to SIG_IGN");
239 /* do regular tasks after at most 10ms */
243 while(!shutdown_openocd
)
245 /* monitor sockets for acitvity */
249 /* add service and connection fds to read_fds */
250 for (service
= services
; service
; service
= service
->next
)
252 if (service
->fd
!= -1)
254 /* listen for new connections */
255 FD_SET(service
->fd
, &read_fds
);
257 if (service
->fd
> fd_max
)
258 fd_max
= service
->fd
;
261 if (service
->connections
)
265 for (c
= service
->connections
; c
; c
= c
->next
)
267 /* check for activity on the connection */
268 FD_SET(c
->fd
, &read_fds
);
276 /* add STDIN to read_fds */
277 FD_SET(fileno(stdin
), &read_fds
);
280 if ((retval
= select(fd_max
+ 1, &read_fds
, NULL
, NULL
, &tv
)) == -1)
284 errno
= WSAGetLastError();
286 if (errno
== WSAEINTR
)
290 ERROR("error during select: %s", strerror(errno
));
299 ERROR("error during select: %s", strerror(errno
));
305 target_call_timer_callbacks();
309 /* do regular tasks after at most 100ms */
314 for (service
= services
; service
; service
= service
->next
)
316 /* handle new connections on listeners */
317 if ((service
->fd
!= -1)
318 && (FD_ISSET(service
->fd
, &read_fds
)))
320 if (service
->max_connections
> 0)
321 add_connection(service
, command_context
);
324 struct sockaddr_in sin
;
325 unsigned int address_size
= sizeof(sin
);
327 tmp_fd
= accept(service
->fd
, (struct sockaddr
*)&service
->sin
, &address_size
);
328 close_socket(tmp_fd
);
329 INFO("rejected '%s' connection, no more connections allowed", service
->name
);
333 /* handle activity on connections */
334 if (service
->connections
)
338 for (c
= service
->connections
; c
;)
340 if ((FD_ISSET(c
->fd
, &read_fds
)) || c
->input_pending
)
342 if (service
->input(c
) != ERROR_OK
)
344 connection_t
*next
= c
->next
;
345 remove_connection(service
, c
);
346 INFO("dropped '%s' connection", service
->name
);
357 if (FD_ISSET(fileno(stdin
), &read_fds
))
359 if (getc(stdin
) == 'x')
361 shutdown_openocd
= 1;
366 while (PeekMessage(&msg
,NULL
,0,0,PM_REMOVE
))
368 if (msg
.message
== WM_QUIT
)
369 shutdown_openocd
= 1;
378 BOOL WINAPI
ControlHandler(DWORD dwCtrlType
)
380 shutdown_openocd
= 1;
384 void sig_handler(int sig
) {
385 shutdown_openocd
= 1;
392 WORD wVersionRequested
;
395 wVersionRequested
= MAKEWORD( 2, 2 );
397 if (WSAStartup(wVersionRequested
, &wsaData
) != 0)
399 ERROR("Failed to Open Winsock");
403 SetConsoleCtrlHandler( ControlHandler
, TRUE
);
405 signal(SIGINT
, sig_handler
);
406 signal(SIGTERM
, sig_handler
);
407 signal(SIGBREAK
, sig_handler
);
408 signal(SIGABRT
, sig_handler
);
421 SetConsoleCtrlHandler( ControlHandler
, FALSE
);
427 int server_register_commands(command_context_t
*context
)
429 register_command(context
, NULL
, "shutdown", handle_shutdown_command
,
430 COMMAND_ANY
, "shut the server down");
435 /* tell the server we want to shut down */
436 int handle_shutdown_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
438 shutdown_openocd
= 1;
440 return ERROR_COMMAND_CLOSE_CONNECTION
;
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