* 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 *
#include "server.h"
#include <target/target.h>
+#include <target/target_request.h>
#include "openocd.h"
#include "tcl_server.h"
#include "telnet_server.h"
/* 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;
-
static int add_connection(struct service *service, struct command_context *cmd_ctx)
{
socklen_t address_size;
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;
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 */
+ * 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 %i", service->name, c->sin.sin_port);
+ LOG_INFO("accepting '%s' connection from %s", service->name, service->port);
if ((retval = service->new_connection(c)) != ERROR_OK)
{
close_socket(c->fd);
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;
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);
+ 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 */
{
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 */
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)
{
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->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;
+ 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 (type == CONNECTION_TCP)
+ if (c->type == CONNECTION_TCP)
{
+ c->max_connections = max_connections;
+
if ((c->fd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
{
LOG_ERROR("error creating socket: %s", strerror(errno));
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);
+ c->sin.sin_port = htons(c->portnumber);
if (bind(c->fd, (struct sockaddr *)&c->sin, sizeof(c->sin)) == -1)
{
exit(-1);
}
}
- else if (type == CONNECTION_PIPE)
+ else if (c->type == CONNECTION_STDINOUT)
{
- /* use stdin */
- c->fd = STDIN_FILENO;
+ c->fd = fileno(stdin);
#ifdef _WIN32
/* for win32 set stdin/stdout to binary mode */
socket_nonblock(c->fd);
#endif
}
- else
+ else if (c->type == CONNECTION_PIPE)
{
- LOG_ERROR("unknown connection type: %d", type);
+#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 */
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);
{
struct service *service;
- bool poll = true;
+ bool poll_ok = true;
/* used in select() */
fd_set read_fds;
}
}
-#ifndef _WIN32
-#if BUILD_ECOSBOARD == 0
- if (server_use_pipes == 0)
- {
- /* add STDIN to read_fds */
- FD_SET(fileno(stdin), &read_fds);
- }
-#endif
-#endif
-
struct timeval tv;
tv.tv_sec = 0;
- if (poll)
+ if (poll_ok)
{
/* we're just polling this iteration, this is faster on embedded
* hosts */
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 = false;
+ poll_ok = false;
} else
{
/* There was something to do, next time we'll just poll */
- poll = true;
+ poll_ok = true;
}
+ /* 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 */
}
else
{
- if (service->type != CONNECTION_PIPE)
+ if (service->type == CONNECTION_TCP)
{
struct sockaddr_in sin;
socklen_t address_size = sizeof(sin);
{
if ((FD_ISSET(c->fd, &read_fds)) || c->input_pending)
{
- if ((retval = service->input(c)) != ERROR_OK)
+ retval = service->input(c);
+ if (retval != ERROR_OK)
{
struct connection *next = c->next;
if (service->type == CONNECTION_PIPE)
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))
{
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);
return ERROR_OK;
}
+int connection_write(struct connection *connection, const void *data, int len)
+{
+ 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 */
COMMAND_HANDLER(handle_shutdown_command)
{
.name = "shutdown",
.handler = &handle_shutdown_command,
.mode = COMMAND_ANY,
+ .usage = "",
.help = "shut the server down",
},
COMMAND_REGISTRATION_DONE
break;
}
default:
- return ERROR_INVALID_ARGUMENTS;
+ 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:
+ {
+ 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