* Copyright (C) 2005 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
- * Copyright (C) 2007,2008 Øyvind Harboe *
+ * Copyright (C) 2007-2010 Øyvind Harboe *
* oyvind.harboe@zylin.com *
* *
* Copyright (C) 2008 by Spencer Oliver *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
+
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
-#include "replacements.h"
-
#include "server.h"
-
-#include "log.h"
+#include <target/target.h>
+#include <target/target_request.h>
+#include "openocd.h"
+#include "tcl_server.h"
#include "telnet_server.h"
-#include "target.h"
-
-#include <command.h>
-#include <string.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include <fcntl.h>
+
#include <signal.h>
+
#ifndef _WIN32
#include <netinet/tcp.h>
#endif
-service_t *services = NULL;
+static struct service *services;
/* shutdown_openocd == 1: exit the main event loop, and quit the debugger */
-static int shutdown_openocd = 0;
-int handle_shutdown_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-
-/* set when using pipes rather than tcp */
-int server_use_pipes = 0;
+static int shutdown_openocd;
-int add_connection(service_t *service, command_context_t *cmd_ctx)
+static int add_connection(struct service *service, struct command_context *cmd_ctx)
{
socklen_t address_size;
- connection_t *c, **p;
+ struct connection *c, **p;
int retval;
- int flag=1;
-
- c = malloc(sizeof(connection_t));
+ int flag = 1;
+
+ c = malloc(sizeof(struct connection));
c->fd = -1;
+ c->fd_out = -1;
memset(&c->sin, 0, sizeof(c->sin));
c->cmd_ctx = copy_command_context(cmd_ctx);
c->service = service;
c->priv = NULL;
c->next = NULL;
- if (service->type == CONNECTION_TCP)
- {
+ if (service->type == CONNECTION_TCP) {
address_size = sizeof(c->sin);
-
+
c->fd = accept(service->fd, (struct sockaddr *)&service->sin, &address_size);
-
+ c->fd_out = c->fd;
+
/* 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)
- {
+ * does not have a sliding window protocol.
+ *
+ * Ignore errors from this fn as it probably just means less performance
+ */
+ 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 %s", service->name, service->port);
+ retval = service->new_connection(c);
+ if (retval != ERROR_OK) {
close_socket(c->fd);
LOG_ERROR("attempted '%s' connection rejected", service->name);
+ command_done(c->cmd_ctx);
free(c);
return retval;
}
- }
- else if (service->type == CONNECTION_PIPE)
- {
+ } else if (service->type == CONNECTION_STDINOUT) {
c->fd = service->fd;
-
+ c->fd_out = fileno(stdout);
+
+#ifdef _WIN32
+ /* we are using stdin/out so ignore ctrl-c under windoze */
+ SetConsoleCtrlHandler(NULL, TRUE);
+#endif
+
/* 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)
- {
+ retval = service->new_connection(c);
+ if (retval != ERROR_OK) {
LOG_ERROR("attempted '%s' connection rejected", service->name);
+ command_done(c->cmd_ctx);
+ 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;
+
+ char *out_file = alloc_printf("%so", service->port);
+ c->fd_out = open(out_file, O_WRONLY);
+ free(out_file);
+ if (c->fd_out == -1) {
+ LOG_ERROR("could not open %s", service->port);
+ exit(1);
+ }
+
+ LOG_INFO("accepting '%s' connection from pipe %s", service->name, service->port);
+ retval = service->new_connection(c);
+ if (retval != ERROR_OK) {
+ LOG_ERROR("attempted '%s' connection rejected", service->name);
+ command_done(c->cmd_ctx);
free(c);
return retval;
}
}
-
+
/* add to the end of linked list */
- for (p = &service->connections; *p; p = &(*p)->next);
+ for (p = &service->connections; *p; p = &(*p)->next)
+ ;
*p = c;
-
+
service->max_connections--;
-
+
return ERROR_OK;
}
-int remove_connection(service_t *service, connection_t *connection)
+static int remove_connection(struct service *service, struct connection *connection)
{
- connection_t **p = &service->connections;
- connection_t *c;
-
+ struct connection **p = &service->connections;
+ struct connection *c;
+
/* find connection */
- while((c = *p))
- {
- if (c->fd == connection->fd)
- {
+ while ((c = *p)) {
+ if (c->fd == connection->fd) {
service->connection_closed(c);
if (service->type == CONNECTION_TCP)
close_socket(c->fd);
+ else if (service->type == CONNECTION_PIPE) {
+ /* The service will listen to the pipe again */
+ c->service->fd = 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;
+ 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)
+/* FIX! make service return error instead of invoking exit() */
+int add_service(char *name,
+ const char *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)
{
- service_t *c, **p;
+ struct service *c, **p;
int so_reuseaddr_option = 1;
-
- c = malloc(sizeof(service_t));
-
+
+ c = malloc(sizeof(struct service));
+
c->name = strdup(name);
- c->type = type;
- c->port = port;
- c->max_connections = max_connections;
+ c->port = strdup(port);
+ c->max_connections = 1; /* Only TCP/IP ports can support more than one connection */
c->fd = -1;
c->connections = NULL;
c->new_connection = new_connection_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)
- {
+ long portnumber;
+ if (strcmp(c->port, "pipe") == 0)
+ c->type = CONNECTION_STDINOUT;
+ else {
+ char *end;
+ portnumber = strtol(c->port, &end, 0);
+ if (!*end && (parse_long(c->port, &portnumber) == ERROR_OK)) {
+ c->portnumber = portnumber;
+ c->type = CONNECTION_TCP;
+ } else
+ c->type = CONNECTION_PIPE;
+ }
+
+ if (c->type == CONNECTION_TCP) {
+ c->max_connections = max_connections;
+
+ c->fd = socket(AF_INET, SOCK_STREAM, 0);
+ if (c->fd == -1) {
LOG_ERROR("error creating socket: %s", strerror(errno));
exit(-1);
}
-
- setsockopt(c->fd, SOL_SOCKET, SO_REUSEADDR, (void*)&so_reuseaddr_option, sizeof(int));
-
+
+ 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)
- {
+ c->sin.sin_port = htons(c->portnumber);
+
+ 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;
+ int segsize = 65536;
setsockopt(c->fd, IPPROTO_TCP, TCP_MAXSEG, &segsize, sizeof(int));
#endif
- int window_size = 128 * 1024;
-
+ 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)
- {
+
+ 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;
-
+ } else if (c->type == CONNECTION_STDINOUT) {
+ c->fd = fileno(stdin);
+
#ifdef _WIN32
/* for win32 set stdin/stdout to binary mode */
if (_setmode(_fileno(stdout), _O_BINARY) < 0)
#else
socket_nonblock(c->fd);
#endif
- }
- else
- {
- LOG_ERROR("unknown connection type: %d", type);
+ } else if (c->type == CONNECTION_PIPE) {
+#ifdef _WIN32
+ /* we currenty do not support named pipes under win32
+ * so exit openocd for now */
+ LOG_ERROR("Named pipes currently not supported under this os");
exit(1);
+#else
+ /* Pipe we're reading from */
+ c->fd = open(c->port, O_RDONLY | O_NONBLOCK);
+ if (c->fd == -1) {
+ LOG_ERROR("could not open %s", c->port);
+ exit(1);
+ }
+#endif
}
-
+
/* add to the end of linked list */
- for (p = &services; *p; p = &(*p)->next);
+ for (p = &services; *p; p = &(*p)->next)
+ ;
*p = c;
-
- return ERROR_OK;
-}
-int remove_service(unsigned short port)
-{
- service_t **p = &services;
- service_t *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)
+static int remove_services(void)
{
- service_t *c = services;
+ struct service *c = services;
/* loop service */
- while(c)
- {
- service_t *next = c->next;
+ while (c) {
+ struct service *next = c->next;
if (c->name)
- free(c->name);
+ free((void *)c->name);
+
+ if (c->type == CONNECTION_PIPE) {
+ if (c->fd != -1)
+ close(c->fd);
+ }
+ if (c->port)
+ free((void *)c->port);
if (c->priv)
free(c->priv);
}
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)
+int server_loop(struct command_context *command_context)
{
- service_t *service;
+ struct service *service;
+
+ bool poll_ok = true;
/* 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 */
+ while (!shutdown_openocd) {
+ /* monitor sockets for activity */
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)
- {
+ 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)
- {
+
+ if (service->connections) {
+ struct connection *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)
}
}
}
-
-#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();
+ struct timeval tv;
+ tv.tv_sec = 0;
+ if (poll_ok) {
+ /* we're just polling this iteration, this is faster on embedded
+ * hosts */
+ tv.tv_usec = 0;
+ retval = socket_select(fd_max + 1, &read_fds, NULL, NULL, &tv);
+ } else {
+ /* Every 100ms */
+ tv.tv_usec = 100000;
+ /* Only while we're sleeping we'll let others run */
+ openocd_sleep_prelude();
+ kept_alive();
+ retval = socket_select(fd_max + 1, &read_fds, NULL, NULL, &tv);
+ openocd_sleep_postlude();
+ }
- if (retval == -1)
- {
+ if (retval == -1) {
#ifdef _WIN32
errno = WSAGetLastError();
if (errno == WSAEINTR)
FD_ZERO(&read_fds);
- else
- {
+ else {
LOG_ERROR("error during select: %s", strerror(errno));
exit(-1);
}
#else
if (errno == EINTR)
- {
FD_ZERO(&read_fds);
- }
- else
- {
+ 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! */
+ if (retval == 0) {
+ /* We only execute these callbacks when there was nothing to do or we timed
+ *out */
+ target_call_timer_callbacks();
+ process_jim_events(command_context);
+
+ FD_ZERO(&read_fds); /* eCos leaves read_fds unchanged in this case! */
+
+ /* We timed out/there was nothing to do, timeout rather than poll next time
+ **/
+ poll_ok = false;
+ } else {
+ /* There was something to do, next time we'll just poll */
+ poll_ok = true;
}
-
- for (service = services; service; service = service->next)
- {
+
+ /* This is a simple back-off algorithm where we immediately
+ * re-poll if we did something this time around.
+ *
+ * This greatly improves performance of DCC.
+ */
+ poll_ok = poll_ok || target_got_message();
+
+ for (service = services; service; service = service->next) {
/* handle new connections on listeners */
- if ((service->fd != -1)
- && (FD_ISSET(service->fd, &read_fds)))
- {
+ 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)
- {
+ else {
+ if (service->type == CONNECTION_TCP) {
struct sockaddr_in sin;
socklen_t address_size = sizeof(sin);
int tmp_fd;
- tmp_fd = accept(service->fd, (struct sockaddr *)&service->sin, &address_size);
+ 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);
+ 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 */
+ if (service->connections) {
+ struct connection *c;
+
+ for (c = service->connections; c; ) {
+ if ((FD_ISSET(c->fd, &read_fds)) || c->input_pending) {
+ retval = service->input(c);
+ if (retval != ERROR_OK) {
+ struct connection *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);
+ LOG_INFO("dropped '%s' connection",
+ service->name);
c = next;
continue;
}
}
}
}
-
-#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
+
+#ifdef _WIN32
MSG msg;
- while (PeekMessage(&msg,NULL,0,0,PM_REMOVE))
- {
+ while (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) {
if (msg.message == WM_QUIT)
shutdown_openocd = 1;
}
#endif
}
-
+
return ERROR_OK;
}
return TRUE;
}
-void sig_handler(int sig) {
+void sig_handler(int sig)
+{
shutdown_openocd = 1;
}
#endif
-int server_init(void)
+int server_preinit(void)
{
+ /* this currently only calls WSAStartup on native win32 systems
+ * before any socket operations are performed.
+ * This is an issue if you call init in your config script */
+
#ifdef _WIN32
WORD wVersionRequested;
WSADATA wsaData;
wVersionRequested = MAKEWORD(2, 2);
- if (WSAStartup(wVersionRequested, &wsaData) != 0)
- {
+ 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);
- }
+ /* register ctrl-c handler */
+ SetConsoleCtrlHandler(ControlHandler, TRUE);
signal(SIGINT, sig_handler);
signal(SIGTERM, sig_handler);
signal(SIGBREAK, sig_handler);
signal(SIGABRT, sig_handler);
#endif
-
+
return ERROR_OK;
}
+int server_init(struct command_context *cmd_ctx)
+{
+ int ret = tcl_init();
+ if (ERROR_OK != ret)
+ return ret;
+
+ return telnet_init("Open On-Chip Debugger");
+}
+
int server_quit(void)
{
remove_services();
#ifdef _WIN32
WSACleanup();
- SetConsoleCtrlHandler( ControlHandler, FALSE );
+ SetConsoleCtrlHandler(ControlHandler, FALSE);
#endif
return ERROR_OK;
}
-int server_register_commands(command_context_t *context)
+int connection_write(struct connection *connection, const void *data, int len)
{
- register_command(context, NULL, "shutdown", handle_shutdown_command,
- COMMAND_ANY, "shut the server down");
-
- return ERROR_OK;
+ if (len == 0) {
+ /* successful no-op. Sockets and pipes behave differently here... */
+ return 0;
+ }
+ if (connection->service->type == CONNECTION_TCP)
+ return write_socket(connection->fd_out, data, len);
+ else
+ return write(connection->fd_out, data, len);
+}
+
+int connection_read(struct connection *connection, void *data, int len)
+{
+ if (connection->service->type == CONNECTION_TCP)
+ return read_socket(connection->fd, data, len);
+ else
+ return read(connection->fd, data, len);
}
/* tell the server we want to shut down */
-int handle_shutdown_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(handle_shutdown_command)
{
+ LOG_USER("shutdown command invoked");
+
shutdown_openocd = 1;
- return ERROR_COMMAND_CLOSE_CONNECTION;
+ return ERROR_OK;
+}
+
+static const struct command_registration server_command_handlers[] = {
+ {
+ .name = "shutdown",
+ .handler = &handle_shutdown_command,
+ .mode = COMMAND_ANY,
+ .usage = "",
+ .help = "shut the server down",
+ },
+ COMMAND_REGISTRATION_DONE
+};
+
+int server_register_commands(struct command_context *cmd_ctx)
+{
+ int retval = telnet_register_commands(cmd_ctx);
+ if (ERROR_OK != retval)
+ return retval;
+
+ retval = tcl_register_commands(cmd_ctx);
+ if (ERROR_OK != retval)
+ return retval;
+
+ return register_commands(cmd_ctx, NULL, server_command_handlers);
+}
+
+SERVER_PORT_COMMAND()
+{
+ switch (CMD_ARGC) {
+ case 0:
+ command_print(CMD_CTX, "%d", *out);
+ break;
+ case 1:
+ {
+ uint16_t port;
+ COMMAND_PARSE_NUMBER(u16, CMD_ARGV[0], port);
+ *out = port;
+ break;
+ }
+ default:
+ return ERROR_COMMAND_SYNTAX_ERROR;
+ }
+ return ERROR_OK;
+}
+
+SERVER_PIPE_COMMAND()
+{
+ switch (CMD_ARGC) {
+ case 0:
+ command_print(CMD_CTX, "%s", *out);
+ break;
+ case 1:
+ {
+ if (CMD_CTX->mode == COMMAND_EXEC) {
+ LOG_WARNING("unable to change server port after init");
+ return ERROR_COMMAND_ARGUMENT_INVALID;
+ }
+ const char *t = strdup(CMD_ARGV[0]);
+ free((void *)*out);
+ *out = t;
+ break;
+ }
+ default:
+ return ERROR_COMMAND_SYNTAX_ERROR;
+ }
+ return ERROR_OK;
}
projects / fw / openocd / blobdiff