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tcl_server: switch to ctrl-z 

by using ctrl-z instead of line end, multi-line tcl scripts
can be handled.

Testing: send ctrl-z a couple of times to make telnet enter the
mode where it sends ctrl-z unencoded.

Programs that talk to the tcl_server can send ctrl-z to
indicate end of tcl-let to be executed without having
to worry about telnet protocols.

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
This commit is contained in:
Øyvind Harboe 2010-09-08 20:04:27 +02:00
parent 241fd0b5a8
commit 6000411ddd
1 changed files with 11 additions and 11 deletions
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22
src/server/tcl_server.c
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@ -1,5 +1,6 @@
/***************************************************************************
* Copyright (C) 2008 *
* Copyright (C) 2010 Øyvind Harboe *
* oyvind.harboe@zylin.com *
* *
* 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 *
@ -104,13 +105,6 @@ static int tcl_input(struct connection *connection)
/* push as much data into the line as possible */
for (i = 0; i < rlen; i++)
{
if (!isprint(in[i]) && !isspace(in[i]))
{
/* drop this line */
tclc->tc_linedrop = 1;
continue;
}
/* buffer the data */
tclc->tc_line[tclc->tc_lineoffset] = in[i];
if (tclc->tc_lineoffset < TCL_MAX_LINE)
@ -118,7 +112,11 @@ static int tcl_input(struct connection *connection)
else
tclc->tc_linedrop = 1;
if (in[i] != '\n')
/* ctrl-z is end of command. When testing from telnet, just
* press ctrl-z a couple of times first to put telnet into the
* mode where it will send 0x1a in response to pressing ctrl-z
*/
if (in[i] != '\x1a')
continue;
/* process the line */
@ -131,13 +129,15 @@ static int tcl_input(struct connection *connection)
}
else {
tclc->tc_line[tclc->tc_lineoffset-1] = '\0';
LOG_DEBUG("Executing script:\n %s", tclc->tc_line);
retval = Jim_Eval_Named(interp, tclc->tc_line, "remote:connection",1);
LOG_DEBUG("Result: %d\n %s", retval, Jim_GetString(Jim_GetResult(interp), &reslen));
result = Jim_GetString(Jim_GetResult(interp), &reslen);
retval = tcl_output(connection, result, reslen);
if (retval != ERROR_OK)
return retval;
if (memchr(result, '\n', reslen) == NULL)
tcl_output(connection, "\n", 1);
/* Always output ctrl-d as end of line to allow multiline results */
tcl_output(connection, "\x1a", 1);
}
tclc->tc_lineoffset = 0;