service_t -> struct service
[openocd.git] / src / server / server.c
index 0aa3383492e85315c9536ad4f574934fb1ec0d38..59ed1a5c3d9577f6183d33d226eb5ff47ce1b860 100644 (file)
-/***************************************************************************\r
- *   Copyright (C) 2005 by Dominic Rath                                    *\r
- *   Dominic.Rath@gmx.de                                                   *\r
- *                                                                         *\r
- *   This program is free software; you can redistribute it and/or modify  *\r
- *   it under the terms of the GNU General Public License as published by  *\r
- *   the Free Software Foundation; either version 2 of the License, or     *\r
- *   (at your option) any later version.                                   *\r
- *                                                                         *\r
- *   This program is distributed in the hope that it will be useful,       *\r
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *\r
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *\r
- *   GNU General Public License for more details.                          *\r
- *                                                                         *\r
- *   You should have received a copy of the GNU General Public License     *\r
- *   along with this program; if not, write to the                         *\r
- *   Free Software Foundation, Inc.,                                       *\r
- *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *\r
- ***************************************************************************/\r
-#ifdef HAVE_CONFIG_H\r
-#include "config.h"\r
-#endif\r
-\r
-#include "replacements.h"\r
-\r
-#include "server.h"\r
-\r
-#include "log.h"\r
-#include "telnet_server.h"\r
-#include "target.h"\r
-\r
-#include <command.h>\r
-#include <string.h>\r
-#include <stdlib.h>\r
-#include <errno.h>\r
-#include <unistd.h>\r
-#include <sys/types.h>\r
-#include <fcntl.h>\r
-#include <signal.h>\r
-\r
-service_t *services = NULL;\r
-\r
-/* shutdown_openocd == 1: exit the main event loop, and quit the debugger */\r
-static int shutdown_openocd = 0;\r
-int handle_shutdown_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);\r
-\r
-int add_connection(service_t *service, command_context_t *cmd_ctx)\r
-{\r
-       unsigned int address_size;\r
-       connection_t *c, **p;\r
-       int retval;\r
-       \r
-       c = malloc(sizeof(connection_t));\r
-       c->fd = -1;\r
-       memset(&c->sin, 0, sizeof(c->sin));\r
-       c->cmd_ctx = copy_command_context(cmd_ctx);\r
-       c->service = service;\r
-       c->input_pending = 0;\r
-       c->priv = NULL;\r
-       c->next = NULL;\r
-\r
-       address_size = sizeof(c->sin);\r
-       c->fd = accept(service->fd, (struct sockaddr *)&service->sin, &address_size);\r
-                               \r
-       if ((retval = service->new_connection(c)) == ERROR_OK)\r
-       {\r
-               INFO("accepted '%s' connection from %i", service->name, c->sin.sin_port);\r
-       }\r
-       else\r
-       {\r
-               close_socket(c->fd);\r
-               INFO("attempted '%s' connection rejected", service->name);\r
-               free(c);\r
-       }\r
-       \r
-       /* add to the end of linked list */\r
-       for (p = &service->connections; *p; p = &(*p)->next);\r
-       *p = c;\r
-       \r
-       service->max_connections--;\r
-       \r
-       return ERROR_OK;\r
-}\r
-\r
-int remove_connection(service_t *service, connection_t *connection)\r
-{\r
-       connection_t **p = &service->connections;\r
-       connection_t *c;\r
-       \r
-       /* find connection */\r
-       while(c = *p)\r
-       {               \r
-               if (c->fd == connection->fd)\r
-               {       \r
-                       service->connection_closed(c);\r
-                       close_socket(c->fd);\r
-                       command_done(c->cmd_ctx);\r
-                       \r
-                       /* delete connection */\r
-                       *p = c->next;\r
-                       free(c);\r
-                       \r
-                       service->max_connections++;\r
-                       break;\r
-               }\r
-               \r
-               /* redirect p to next list pointer */\r
-               p = &(*p)->next;                \r
-       }\r
-       \r
-       return ERROR_OK;\r
-}\r
-\r
-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)\r
-{\r
-       service_t *c, **p;\r
-       int so_reuseaddr_option = 1;\r
-       \r
-       c = malloc(sizeof(service_t));\r
-       \r
-       c->name = strdup(name);\r
-       c->type = type;\r
-       c->port = port;\r
-       c->max_connections = max_connections;\r
-       c->fd = -1;\r
-       c->connections = NULL;\r
-       c->new_connection = new_connection_handler;\r
-       c->input = input_handler;\r
-       c->connection_closed = connection_closed_handler;\r
-       c->priv = priv;\r
-       c->next = NULL;\r
-       \r
-       if ((c->fd = socket(AF_INET, SOCK_STREAM, 0)) == -1)\r
-       {\r
-               ERROR("error creating socket: %s", strerror(errno));\r
-               exit(-1);\r
-       }\r
-       \r
-       setsockopt(c->fd, SOL_SOCKET, SO_REUSEADDR, (void*)&so_reuseaddr_option, sizeof(int));\r
-       \r
-       socket_nonblock(c->fd);\r
-       \r
-       memset(&c->sin, 0, sizeof(c->sin));\r
-       c->sin.sin_family = AF_INET;\r
-       c->sin.sin_addr.s_addr = INADDR_ANY;\r
-       c->sin.sin_port = htons(port);\r
-       \r
-       if (bind(c->fd, (struct sockaddr *)&c->sin, sizeof(c->sin)) == -1)\r
-       {\r
-               ERROR("couldn't bind to socket: %s", strerror(errno));\r
-               exit(-1);\r
-       }\r
-       \r
-       if (listen(c->fd, 1) == -1)\r
-       {\r
-               ERROR("couldn't listen on socket: %s", strerror(errno));\r
-               exit(-1);\r
-       }\r
-       \r
-       /* add to the end of linked list */\r
-       for (p = &services; *p; p = &(*p)->next);\r
-       *p = c;\r
-       \r
-       return ERROR_OK;\r
-}\r
-\r
-int remove_service(unsigned short port)\r
-{\r
-       service_t **p = &services;\r
-       service_t *c;\r
-       \r
-       /* find service */\r
-       while(c = *p)\r
-       {               \r
-               if (c->port == port)\r
-               {       \r
-                       if (c->name)\r
-                               free(c->name);\r
-                       \r
-                       if (c->priv)\r
-                               free(c->priv);\r
-                       \r
-                       /* delete service */\r
-                       *p = c->next;\r
-                       free(c);\r
-               }\r
-\r
-               /* redirect p to next list pointer */\r
-               p = &(*p)->next;\r
-       }\r
-       \r
-       return ERROR_OK;\r
-}\r
-\r
-int remove_services()\r
-{\r
-       service_t *c = services;\r
-\r
-       /* loop service */\r
-       while(c)\r
-       {\r
-               service_t *next = c->next;\r
-\r
-               if (c->name)\r
-                       free(c->name);\r
-\r
-               if (c->priv)\r
-                       free(c->priv);\r
-\r
-               /* delete service */\r
-               free(c);\r
-\r
-               /* remember the last service for unlinking */\r
-               c = next;\r
-       }\r
-\r
-       services = NULL;\r
-       \r
-       return ERROR_OK;\r
-}\r
-\r
-int server_loop(command_context_t *command_context)\r
-{\r
-       service_t *service;\r
-\r
-       /* used in select() */\r
-       fd_set read_fds;\r
-       struct timeval tv;\r
-       int fd_max;\r
-       \r
-       /* used in accept() */\r
-       int retval;\r
-       \r
-#ifndef _WIN32\r
-       if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)\r
-               ERROR("couldn't set SIGPIPE to SIG_IGN");\r
-#endif\r
-       \r
-       /* do regular tasks after at most 10ms */\r
-       tv.tv_sec = 0;\r
-       tv.tv_usec = 10000;\r
-       \r
-       while(!shutdown_openocd)\r
-       {\r
-               /* monitor sockets for acitvity */\r
-               fd_max = 0;\r
-               FD_ZERO(&read_fds);\r
-\r
-               /* add service and connection fds to read_fds */\r
-               for (service = services; service; service = service->next)\r
-               {\r
-                       if (service->fd != -1)\r
-                       {\r
-                               /* listen for new connections */\r
-                               FD_SET(service->fd, &read_fds);\r
-\r
-                               if (service->fd > fd_max)\r
-                                       fd_max = service->fd;\r
-                       }\r
-                       \r
-                       if (service->connections)\r
-                       {\r
-                               connection_t *c;\r
-                               \r
-                               for (c = service->connections; c; c = c->next)\r
-                               {\r
-                                       /* check for activity on the connection */\r
-                                       FD_SET(c->fd, &read_fds);\r
-                                       if (c->fd > fd_max)\r
-                                               fd_max = c->fd;\r
-                               }\r
-                       }\r
-               }\r
-               \r
-#ifndef _WIN32\r
-               /* add STDIN to read_fds */\r
-               FD_SET(fileno(stdin), &read_fds);\r
-#endif\r
-\r
-               retval = select(fd_max + 1, &read_fds, NULL, NULL, &tv);\r
-               \r
-               if (retval == -1)\r
-               {\r
-#ifdef _WIN32\r
-\r
-                       errno = WSAGetLastError();\r
-\r
-                       if (errno == WSAEINTR)\r
-                               FD_ZERO(&read_fds);\r
-                       else\r
-                       {\r
-                               ERROR("error during select: %s", strerror(errno));\r
-                               exit(-1);\r
-                       }\r
-#else\r
-\r
-                       if (errno == EINTR)\r
-                       {\r
-                               FD_ZERO(&read_fds);\r
-                       }\r
-                       else\r
-                       {\r
-                               ERROR("error during select: %s", strerror(errno));\r
-                               exit(-1);\r
-                       }\r
-#endif\r
-               }\r
-               \r
-               target_call_timer_callbacks();\r
-\r
-               if (retval == 0)\r
-               {\r
-                       /* do regular tasks after at most 100ms */\r
-                       tv.tv_sec = 0;\r
-                       tv.tv_usec = 10000;\r
-                       FD_ZERO(&read_fds); /* eCos leaves read_fds unchanged in this case!  */\r
-               }\r
-               \r
-               for (service = services; service; service = service->next)\r
-               {\r
-                       /* handle new connections on listeners */\r
-                       if ((service->fd != -1) \r
-                               && (FD_ISSET(service->fd, &read_fds))) \r
-                       {\r
-                               if (service->max_connections > 0)\r
-                               {\r
-                                       add_connection(service, command_context);\r
-                               }\r
-                               else\r
-                               {\r
-                                       struct sockaddr_in sin;\r
-                                       unsigned int address_size = sizeof(sin);\r
-                                       int tmp_fd;\r
-                                       tmp_fd = accept(service->fd, (struct sockaddr *)&service->sin, &address_size);\r
-                                       close_socket(tmp_fd);\r
-                                       INFO("rejected '%s' connection, no more connections allowed", service->name);\r
-                               }\r
-                       }\r
-                       \r
-                       /* handle activity on connections */\r
-                       if (service->connections)\r
-                       {\r
-                               connection_t *c;\r
-                               \r
-                               for (c = service->connections; c;)\r
-                               {\r
-                                       if ((FD_ISSET(c->fd, &read_fds)) || c->input_pending)\r
-                                       {\r
-                                               if (service->input(c) != ERROR_OK)\r
-                                               {\r
-                                                       connection_t *next = c->next;\r
-                                                       remove_connection(service, c);\r
-                                                       INFO("dropped '%s' connection", service->name);\r
-                                                       c = next;\r
-                                                       continue;\r
-                                               }\r
-                                       }\r
-                                       c = c->next;\r
-                               }\r
-                       }\r
-               }\r
-               \r
-#ifndef _WIN32\r
-               if (FD_ISSET(fileno(stdin), &read_fds))\r
-               {\r
-                       if (getc(stdin) == 'x')\r
-                       {\r
-                               shutdown_openocd = 1;\r
-                       }\r
-               }\r
-#else\r
-               MSG msg;\r
-               while (PeekMessage(&msg,NULL,0,0,PM_REMOVE))\r
-               {\r
-                       if (msg.message == WM_QUIT)\r
-                               shutdown_openocd = 1;\r
-               }\r
-#endif\r
-       }\r
-       \r
-       return ERROR_OK;\r
-}\r
-\r
-#ifdef _WIN32\r
-BOOL WINAPI ControlHandler(DWORD dwCtrlType)\r
-{\r
-    shutdown_openocd = 1;\r
-    return TRUE;\r
-}\r
-\r
-void sig_handler(int sig) {\r
-    shutdown_openocd = 1;\r
-}\r
-#endif\r
-\r
-int server_init()\r
-{\r
-#ifdef _WIN32\r
-       WORD wVersionRequested;\r
-       WSADATA wsaData;\r
-\r
-       wVersionRequested = MAKEWORD( 2, 2 );\r
-\r
-       if (WSAStartup(wVersionRequested, &wsaData) != 0)\r
-       {\r
-               ERROR("Failed to Open Winsock");\r
-               exit(-1);\r
-       }\r
-\r
-       SetConsoleCtrlHandler( ControlHandler, TRUE );\r
-\r
-       signal(SIGINT, sig_handler);\r
-       signal(SIGTERM, sig_handler);\r
-       signal(SIGBREAK, sig_handler);\r
-       signal(SIGABRT, sig_handler);\r
-#endif\r
-\r
-       \r
-       return ERROR_OK;\r
-}\r
-\r
-int server_quit()\r
-{\r
-       remove_services();\r
-\r
-#ifdef _WIN32\r
-       WSACleanup();\r
-       SetConsoleCtrlHandler( ControlHandler, FALSE );\r
-#endif\r
-\r
-       return ERROR_OK;\r
-}\r
-\r
-int server_register_commands(command_context_t *context)\r
-{\r
-       register_command(context, NULL, "shutdown", handle_shutdown_command,\r
-                                        COMMAND_ANY, "shut the server down");\r
-       \r
-       return ERROR_OK;\r
-}\r
-\r
-/* tell the server we want to shut down */\r
-int handle_shutdown_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)\r
-{\r
-       shutdown_openocd = 1;\r
-\r
-       return ERROR_COMMAND_CLOSE_CONNECTION;\r
-}\r
-\r
-\r
+/***************************************************************************
+ *   Copyright (C) 2005 by Dominic Rath                                    *
+ *   Dominic.Rath@gmx.de                                                   *
+ *                                                                         *
+ *   Copyright (C) 2007,2008 Ã˜yvind Harboe                                 *
+ *   oyvind.harboe@zylin.com                                               *
+ *                                                                         *
+ *   Copyright (C) 2008 by Spencer Oliver                                  *
+ *   spen@spen-soft.co.uk                                                  *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+ ***************************************************************************/
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "server.h"
+#include "target.h"
+
+#include <signal.h>
+
+#ifndef _WIN32
+#include <netinet/tcp.h>
+#endif
+
+
+struct service *services = NULL;
+
+/* shutdown_openocd == 1: exit the main event loop, and quit the debugger */
+static int shutdown_openocd = 0;
+
+/* set when using pipes rather than tcp */
+int server_use_pipes = 0;
+
+int add_connection(struct service *service, command_context_t *cmd_ctx)
+{
+       socklen_t address_size;
+       connection_t *c, **p;
+       int retval;
+       int flag = 1;
+
+       c = malloc(sizeof(connection_t));
+       c->fd = -1;
+       memset(&c->sin, 0, sizeof(c->sin));
+       c->cmd_ctx = copy_command_context(cmd_ctx);
+       c->service = service;
+       c->input_pending = 0;
+       c->priv = NULL;
+       c->next = NULL;
+
+       if (service->type == CONNECTION_TCP)
+       {
+               address_size = sizeof(c->sin);
+
+               c->fd = accept(service->fd, (struct sockaddr *)&service->sin, &address_size);
+
+               /* This increases performance dramatically for e.g. GDB load which
+                * does not have a sliding window protocol. */
+               retval = setsockopt(c->fd,      /* socket affected */
+                               IPPROTO_TCP,            /* set option at TCP level */
+                               TCP_NODELAY,            /* name of option */
+                               (char *)&flag,          /* the cast is historical cruft */
+                               sizeof(int));           /* length of option value */
+
+               LOG_INFO("accepting '%s' connection from %i", service->name, c->sin.sin_port);
+               if ((retval = service->new_connection(c)) != ERROR_OK)
+               {
+                       close_socket(c->fd);
+                       LOG_ERROR("attempted '%s' connection rejected", service->name);
+                       free(c);
+                       return retval;
+               }
+       }
+       else if (service->type == CONNECTION_PIPE)
+       {
+               c->fd = service->fd;
+
+               /* do not check for new connections again on stdin */
+               service->fd = -1;
+
+               LOG_INFO("accepting '%s' connection from pipe", service->name);
+               if ((retval = service->new_connection(c)) != ERROR_OK)
+               {
+                       LOG_ERROR("attempted '%s' connection rejected", service->name);
+                       free(c);
+                       return retval;
+               }
+       }
+
+       /* add to the end of linked list */
+       for (p = &service->connections; *p; p = &(*p)->next);
+       *p = c;
+
+       service->max_connections--;
+
+       return ERROR_OK;
+}
+
+int remove_connection(struct service *service, connection_t *connection)
+{
+       connection_t **p = &service->connections;
+       connection_t *c;
+
+       /* find connection */
+       while ((c = *p))
+       {
+               if (c->fd == connection->fd)
+               {
+                       service->connection_closed(c);
+                       if (service->type == CONNECTION_TCP)
+                               close_socket(c->fd);
+                       command_done(c->cmd_ctx);
+
+                       /* delete connection */
+                       *p = c->next;
+                       free(c);
+
+                       service->max_connections++;
+                       break;
+               }
+
+               /* redirect p to next list pointer */
+               p = &(*p)->next;
+       }
+
+       return ERROR_OK;
+}
+
+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)
+{
+       struct service *c, **p;
+       int so_reuseaddr_option = 1;
+
+       c = malloc(sizeof(struct service));
+
+       c->name = strdup(name);
+       c->type = type;
+       c->port = port;
+       c->max_connections = max_connections;
+       c->fd = -1;
+       c->connections = NULL;
+       c->new_connection = new_connection_handler;
+       c->input = input_handler;
+       c->connection_closed = connection_closed_handler;
+       c->priv = priv;
+       c->next = NULL;
+
+       if (type == CONNECTION_TCP)
+       {
+               if ((c->fd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
+               {
+                       LOG_ERROR("error creating socket: %s", strerror(errno));
+                       exit(-1);
+               }
+
+               setsockopt(c->fd, SOL_SOCKET, SO_REUSEADDR, (void*)&so_reuseaddr_option, sizeof(int));
+
+               socket_nonblock(c->fd);
+
+               memset(&c->sin, 0, sizeof(c->sin));
+               c->sin.sin_family = AF_INET;
+               c->sin.sin_addr.s_addr = INADDR_ANY;
+               c->sin.sin_port = htons(port);
+
+               if (bind(c->fd, (struct sockaddr *)&c->sin, sizeof(c->sin)) == -1)
+               {
+                       LOG_ERROR("couldn't bind to socket: %s", strerror(errno));
+                       exit(-1);
+               }
+
+#ifndef _WIN32
+               int segsize = 65536;
+               setsockopt(c->fd, IPPROTO_TCP, TCP_MAXSEG,  &segsize, sizeof(int));
+#endif
+               int window_size = 128 * 1024;
+
+               /* These setsockopt()s must happen before the listen() */
+
+               setsockopt(c->fd, SOL_SOCKET, SO_SNDBUF,
+                       (char *)&window_size, sizeof(window_size));
+               setsockopt(c->fd, SOL_SOCKET, SO_RCVBUF,
+                       (char *)&window_size, sizeof(window_size));
+
+               if (listen(c->fd, 1) == -1)
+               {
+                       LOG_ERROR("couldn't listen on socket: %s", strerror(errno));
+                       exit(-1);
+               }
+       }
+       else if (type == CONNECTION_PIPE)
+       {
+               /* use stdin */
+               c->fd = STDIN_FILENO;
+
+#ifdef _WIN32
+               /* for win32 set stdin/stdout to binary mode */
+               if (_setmode(_fileno(stdout), _O_BINARY) < 0)
+                       LOG_WARNING("cannot change stdout mode to binary");
+               if (_setmode(_fileno(stdin), _O_BINARY) < 0)
+                       LOG_WARNING("cannot change stdin mode to binary");
+               if (_setmode(_fileno(stderr), _O_BINARY) < 0)
+                       LOG_WARNING("cannot change stderr mode to binary");
+#else
+               socket_nonblock(c->fd);
+#endif
+       }
+       else
+       {
+               LOG_ERROR("unknown connection type: %d", type);
+               exit(1);
+       }
+
+       /* add to the end of linked list */
+       for (p = &services; *p; p = &(*p)->next);
+       *p = c;
+
+       return ERROR_OK;
+}
+
+int remove_service(unsigned short port)
+{
+       struct service **p = &services;
+       struct service *c;
+
+       /* find service */
+       while ((c = *p))
+       {
+               if (c->port == port)
+               {
+                       if (c->name)
+                               free(c->name);
+
+                       if (c->priv)
+                               free(c->priv);
+
+                       /* delete service */
+                       *p = c->next;
+                       free(c);
+               }
+
+               /* redirect p to next list pointer */
+               p = &(*p)->next;
+       }
+
+       return ERROR_OK;
+}
+
+int remove_services(void)
+{
+       struct service *c = services;
+
+       /* loop service */
+       while (c)
+       {
+               struct service *next = c->next;
+
+               if (c->name)
+                       free(c->name);
+
+               if (c->priv)
+                       free(c->priv);
+
+               /* delete service */
+               free(c);
+
+               /* remember the last service for unlinking */
+               c = next;
+       }
+
+       services = NULL;
+
+       return ERROR_OK;
+}
+
+extern void openocd_sleep_prelude(void);
+extern void openocd_sleep_postlude(void);
+
+int server_loop(command_context_t *command_context)
+{
+       struct service *service;
+
+       /* used in select() */
+       fd_set read_fds;
+       struct timeval tv;
+       int fd_max;
+
+       /* used in accept() */
+       int retval;
+
+#ifndef _WIN32
+       if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
+               LOG_ERROR("couldn't set SIGPIPE to SIG_IGN");
+#endif
+
+       /* do regular tasks after at most 10ms */
+       tv.tv_sec = 0;
+       tv.tv_usec = 10000;
+
+       while (!shutdown_openocd)
+       {
+               /* monitor sockets for acitvity */
+               fd_max = 0;
+               FD_ZERO(&read_fds);
+
+               /* add service and connection fds to read_fds */
+               for (service = services; service; service = service->next)
+               {
+                       if (service->fd != -1)
+                       {
+                               /* listen for new connections */
+                               FD_SET(service->fd, &read_fds);
+
+                               if (service->fd > fd_max)
+                                       fd_max = service->fd;
+                       }
+
+                       if (service->connections)
+                       {
+                               connection_t *c;
+
+                               for (c = service->connections; c; c = c->next)
+                               {
+                                       /* check for activity on the connection */
+                                       FD_SET(c->fd, &read_fds);
+                                       if (c->fd > fd_max)
+                                               fd_max = c->fd;
+                               }
+                       }
+               }
+
+#ifndef _WIN32
+#if BUILD_ECOSBOARD == 0
+               if (server_use_pipes == 0)
+               {
+                       /* add STDIN to read_fds */
+                       FD_SET(fileno(stdin), &read_fds);
+               }
+#endif
+#endif
+
+               openocd_sleep_prelude();
+               kept_alive();
+
+               /* Only while we're sleeping we'll let others run */
+               retval = socket_select(fd_max + 1, &read_fds, NULL, NULL, &tv);
+               openocd_sleep_postlude();
+
+               if (retval == -1)
+               {
+#ifdef _WIN32
+
+                       errno = WSAGetLastError();
+
+                       if (errno == WSAEINTR)
+                               FD_ZERO(&read_fds);
+                       else
+                       {
+                               LOG_ERROR("error during select: %s", strerror(errno));
+                               exit(-1);
+                       }
+#else
+
+                       if (errno == EINTR)
+                       {
+                               FD_ZERO(&read_fds);
+                       }
+                       else
+                       {
+                               LOG_ERROR("error during select: %s", strerror(errno));
+                               exit(-1);
+                       }
+#endif
+               }
+
+               target_call_timer_callbacks();
+               process_jim_events ();
+
+               if (retval == 0)
+               {
+                       /* do regular tasks after at most 100ms */
+                       tv.tv_sec = 0;
+                       tv.tv_usec = 10000;
+                       FD_ZERO(&read_fds); /* eCos leaves read_fds unchanged in this case!  */
+               }
+
+               for (service = services; service; service = service->next)
+               {
+                       /* handle new connections on listeners */
+                       if ((service->fd != -1)
+                               && (FD_ISSET(service->fd, &read_fds)))
+                       {
+                               if (service->max_connections > 0)
+                               {
+                                       add_connection(service, command_context);
+                               }
+                               else
+                               {
+                                       if (service->type != CONNECTION_PIPE)
+                                       {
+                                               struct sockaddr_in sin;
+                                               socklen_t address_size = sizeof(sin);
+                                               int tmp_fd;
+                                               tmp_fd = accept(service->fd, (struct sockaddr *)&service->sin, &address_size);
+                                               close_socket(tmp_fd);
+                                       }
+                                       LOG_INFO("rejected '%s' connection, no more connections allowed", service->name);
+                               }
+                       }
+
+                       /* handle activity on connections */
+                       if (service->connections)
+                       {
+                               connection_t *c;
+
+                               for (c = service->connections; c;)
+                               {
+                                       if ((FD_ISSET(c->fd, &read_fds)) || c->input_pending)
+                                       {
+                                               if ((retval = service->input(c)) != ERROR_OK)
+                                               {
+                                                       connection_t *next = c->next;
+                                                       if (service->type == CONNECTION_PIPE)
+                                                       {
+                                                               /* if connection uses a pipe then shutdown openocd on error */
+                                                               shutdown_openocd = 1;
+                                                       }
+                                                       remove_connection(service, c);
+                                                       LOG_INFO("dropped '%s' connection - error %d", service->name, retval);
+                                                       c = next;
+                                                       continue;
+                                               }
+                                       }
+                                       c = c->next;
+                               }
+                       }
+               }
+
+#ifndef _WIN32
+#if BUILD_ECOSBOARD == 0
+               /* check for data on stdin if not using pipes */
+               if (server_use_pipes == 0)
+               {
+                       if (FD_ISSET(fileno(stdin), &read_fds))
+                       {
+                               if (getc(stdin) == 'x')
+                               {
+                                       shutdown_openocd = 1;
+                               }
+                       }
+               }
+#endif
+#else
+               MSG msg;
+               while (PeekMessage(&msg,NULL,0,0,PM_REMOVE))
+               {
+                       if (msg.message == WM_QUIT)
+                               shutdown_openocd = 1;
+               }
+#endif
+       }
+
+       return ERROR_OK;
+}
+
+#ifdef _WIN32
+BOOL WINAPI ControlHandler(DWORD dwCtrlType)
+{
+       shutdown_openocd = 1;
+       return TRUE;
+}
+
+void sig_handler(int sig) {
+       shutdown_openocd = 1;
+}
+#endif
+
+int server_init(void)
+{
+#ifdef _WIN32
+       WORD wVersionRequested;
+       WSADATA wsaData;
+
+       wVersionRequested = MAKEWORD(2, 2);
+
+       if (WSAStartup(wVersionRequested, &wsaData) != 0)
+       {
+               LOG_ERROR("Failed to Open Winsock");
+               exit(-1);
+       }
+
+       if (server_use_pipes == 0)
+       {
+               /* register ctrl-c handler */
+               SetConsoleCtrlHandler(ControlHandler, TRUE);
+       }
+       else
+       {
+               /* we are using pipes so ignore ctrl-c */
+               SetConsoleCtrlHandler(NULL, TRUE);
+       }
+
+       signal(SIGINT, sig_handler);
+       signal(SIGTERM, sig_handler);
+       signal(SIGBREAK, sig_handler);
+       signal(SIGABRT, sig_handler);
+#endif
+
+       return ERROR_OK;
+}
+
+int server_quit(void)
+{
+       remove_services();
+
+#ifdef _WIN32
+       WSACleanup();
+       SetConsoleCtrlHandler(ControlHandler, FALSE);
+#endif
+
+       return ERROR_OK;
+}
+
+/* tell the server we want to shut down */
+COMMAND_HANDLER(handle_shutdown_command)
+{
+       shutdown_openocd = 1;
+
+       return ERROR_COMMAND_CLOSE_CONNECTION;
+}
+
+int server_register_commands(command_context_t *context)
+{
+       register_command(context, NULL, "shutdown",
+                       handle_shutdown_command, COMMAND_ANY,
+                       "shut the server down");
+
+       return ERROR_OK;
+}
+
+
+SERVER_PORT_COMMAND()
+{
+       switch (argc) {
+       case 0:
+               command_print(cmd_ctx, "%d", *out);
+               break;
+       case 1:
+       {
+               uint16_t port;
+               COMMAND_PARSE_NUMBER(u16, args[0], port);
+               *out = port;
+               break;
+       }
+       default:
+               return ERROR_INVALID_ARGUMENTS;
+       }
+       return ERROR_OK;
+}

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