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SCP: Update to Bob Supnik's latest source candidate v3.11.2

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Bob Supnik
2020-12-27 13:25:10 -08:00
committed by Mark Pizzolato
parent 507be1f2e2
commit 541d1c3c90
7 changed files with 337 additions and 130 deletions
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328
sim_tmxr.c
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@@ -1,6 +1,6 @@
/* sim_tmxr.c: Telnet terminal multiplexor library
Copyright (c) 2001-2019, Robert M Supnik
Copyright (c) 2001-2020, Robert M Supnik
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
@@ -26,6 +26,9 @@
Based on the original DZ11 simulator by Thord Nilson, as updated by
Arthur Krewat.
26-Oct-20 JDB Line order now supports partial connection lists
23-Oct-20 JDB Added tmxr_table and tmxr_post_logs
tmxr_set_log now takes -N switch for new file
19-Dec-19 JDB Added tmxr_is_extended global hook
19-Mar-19 JDB Added tmxr_read, tmxr_write, tmxr_show, tmxr_close
global hooks and associated local hook routines;
@@ -79,16 +82,25 @@
tmxr_dep - (null) deposit
tmxr_msg - send message to socket
tmxr_linemsg - send message to line
tmxr_fconns - output connection status
tmxr_fstats - output connection statistics
tmxr_fconns - output line connection status
tmxr_fstats - output line connection statistics
tmxr_set_log - open a log file for a terminal line
tmxr_set_nolog - close a log file for a terminal line
tmxr_post_logs - flush and optionally close all log files
tmxr_show_log - output log file status
tmxr_dscln - disconnect line (SET routine)
tmxr_rqln - number of available characters for line
tmxr_tqln - number of buffered characters for line
tmxr_set_lnorder - set line connection order
tmxr_show_lnorder - show line connection order
tmxr_init_line - initialize the line data
tmxr_report_connection - report a line connection to the port
tmxr_disconnect_line - disconnect a line
tmxr_show_summ - output the number of connections
tmxr_show_cstat - output device connection status or statistics
tmxr_show_lines - output the number of lines
tmxr_find_ldsc - find a line descriptor
tmxr_send_buffered_data - write the line data
tmxr_init_line - initialize the line data
tmxr_report_connection - report a line connection to the port
tmxr_disconnect_line - disconnect a line
All routines are OS-independent.
*/
@@ -139,6 +151,21 @@
#define TNS_CRPAD 005 /* CR padding */
#define TNS_DO 006 /* DO request pending rejection */
/* Multiplexer-descriptor table.
Each device multiplexer declares a multiplexer descriptor (TMXR) structure to
identify the mux and its terminal lines. The structure is local to the
device simulator, and nothing in the DEVICE structure points to it, so there
is no external way of accessing the line (TMLN) structures. Access is needed
if the associated terminal line logs are to be flushed when a simulator stop
occurs and closed when the simulator exits. This is provided by a global
table of TMXR structures that is filled in when line logs are opened.
*/
#define TABLE_COUNT 10 /* the number of table entries provided */
static TMXR *tmxr_table [TABLE_COUNT] = { NULL }; /* the table of multiplexer descriptors */
void tmxr_rmvrc (TMLN *lp, int32 p);
extern char sim_name[];
@@ -165,15 +192,22 @@ t_bool (*tmxr_is_extended) (TMLN *lp) = NULL;
line number activated, -1 if none
If a connection order is defined for the descriptor, and the first value is
not -1 (indicating default order), then the order array is used to find an
open line. Otherwise, a search is made of all lines in numerical sequence.
not < 0 to indicate the default order, then the order array is used to find
an open line. Otherwise, a search is made of all lines in numerical
sequence.
If some valid lines are to be omitted from the connection order, a value < 0
will appear after the last allowed line value. For example, specifying
connection order values of 1, 0, 2, and -1 will allow connections to lines 1,
0, and 2 in that order. Additional connection attempts will fail with "All
connections busy," even though more lines are available in the device.
*/
int32 tmxr_poll_conn (TMXR *mp)
{
SOCKET newsock;
TMLN *lp;
int32 *op;
int32 *op, *fop;
int32 i, j;
char *ipaddr = NULL;
@@ -187,14 +221,20 @@ static char mantra[] = {
newsock = sim_accept_conn (mp->master, &ipaddr); /* poll connect */
if (newsock != INVALID_SOCKET) { /* got a live one? */
op = mp->lnorder; /* get line connection order list pointer */
fop = op = mp->lnorder; /* get line connection order list pointer */
i = mp->lines; /* play it safe in case lines == 0 */
for (j = 0; j < mp->lines; j++, i++) { /* find next avail line */
if (op && (*op >= 0) && (*op < mp->lines)) /* order list present and valid? */
i = *op++; /* get next line in list to try */
else /* no list or not used or range error */
i = j; /* get next sequential line */
for (j = 0; j < mp->lines; j++, i++) { /* find the next available line */
if (fop == NULL || *fop < 0) /* if the first list entry is undefined or defaulted */
i = j; /* then use the next sequential line */
else if (*op >= 0 && *op < mp->lines) /* otherwise if the line number is legal */
i = *op++; /* then use the next listed line */
else { /* otherwise the list entry is invalid */
i = mp->lines; /* so abandon the search now */
break; /* and report that no lines are free */
}
lp = mp->ldsc + i; /* get pointer to line descriptor */
if (lp->conn == 0) /* is the line available? */
@@ -422,9 +462,9 @@ for (i = 0; i < mp->lines; i++) { /* loop thru lines */
lp->tsta = TNS_SKIP; /* IAC + other */
break;
case TN_GA: case TN_EL: /* IAC + other 2 byte types */
case TN_EC: case TN_AYT:
case TN_EC: case TN_AYT:
case TN_AO: case TN_IP:
case TN_NOP:
case TN_NOP:
lp->tsta = TNS_NORM; /* ignore */
break;
case TN_SB: /* IAC + SB sub-opt negotiation */
@@ -811,12 +851,28 @@ if (lp->conn) {
return SCPE_OK;
}
/* Enable logging for line */
/* Enable logging for line.
This routine opens the log file whose name is specified by "cptr" for the
multiplexer line associated with "uptr" or, if NULL, for the line number
specified by "val". "desc" contains a pointer to the multiplexer descriptor.
If opening is successful, the routine then adds the descriptor pointer to the
table of descriptors, which is used to flush and eventually close the log
files.
Implementation notes:
1. Table entries are not removed, so a NULL entry indicates both the end of
the active list and the first available space.
*/
t_stat tmxr_set_log (UNIT *uptr, int32 val, char *cptr, void *desc)
{
TMXR *mp = (TMXR *) desc;
TMLN *lp;
uint32 index;
if (cptr == NULL) /* no file name? */
return SCPE_2FARG;
@@ -829,12 +885,29 @@ lp->txlogname = (char *) calloc (CBUFSIZE, sizeof (char)); /* alloc namebuf */
if (lp->txlogname == NULL) /* can't? */
return SCPE_MEM;
strncpy (lp->txlogname, cptr, CBUFSIZE); /* save file name */
lp->txlog = fopen (cptr, "ab"); /* open log */
if (sim_switches & SWMASK ('N')) /* if a new log file is requested */
lp->txlog = fopen (cptr, "wb"); /* then open an empty file for writing */
else /* otherwise */
lp->txlog = fopen (cptr, "ab"); /* open an existing file for appending */
if (lp->txlog == NULL) { /* error? */
free (lp->txlogname); /* free buffer */
return SCPE_OPENERR;
}
return SCPE_OK;
else { /* otherwise if the open succeeded */
for (index = 0; index < TABLE_COUNT; index++) /* loop through the table entries */
if (tmxr_table [index] == mp) /* if the mux descriptor is already present */
break; /* then we're done */
else if (tmxr_table [index] == NULL) { /* otherwise if the entry is empty */
tmxr_table [index] = mp; /* then store the new descriptor */
break; /* and we're done */
}
if (index == TABLE_COUNT) /* if there are no empty entries */
return SCPE_IERR; /* then report an internal error */
else /* otherwise the descriptor was */
return SCPE_OK; /* either already present or added */
}
}
/* Disable logging for line */
@@ -858,6 +931,52 @@ if (lp->txlog) { /* logging? */
return SCPE_OK;
}
/* Flush and optionally close all log files.
This routine flushes or closes all active terminal multiplexer line logs,
depending on the value of the boolean parameter. The routine uses the table
of multiplexer descriptors constructed by the "tmxr_set_log" routine to
identify the active lines. The line structure array associated with each
descriptor is examined in sequence for active logs. Each one that is found
is flushed to post the contents to disc and left open, or closed and marked
inactive, as directed by the supplied parameter.
Implementation notes:
1. The table is organized so that a NULL entry indicates that no additional
descriptors will be found. That is, descriptors always appear at the
beginning of the table.
*/
void tmxr_post_logs (t_bool close_logs)
{
uint32 index;
int32 line, line_count;
TMXR *mptr;
TMLN *lptr;
for (index = 0; index < TABLE_COUNT; index++) /* look through the descriptor list */
if (tmxr_table [index] == NULL) /* until all entries */
break; /* have been seen */
else { /* for each active entry */
mptr = tmxr_table [index]; /* get the entry */
lptr = mptr->ldsc; /* and the line array */
line_count = mptr->lines; /* and the number of lines */
for (line = 0; line < line_count; line++, lptr++) /* for all lines in the array */
if (lptr->txlog != NULL) /* if the current line's log is active */
if (close_logs) /* then if closing is requested */
tmxr_set_nolog (NULL, line, NULL, /* then close the log */
(void *) mptr);
else /* otherwise */
fflush (lptr->txlog); /* flush the log and leave it open */
}
return;
}
/* Show logging status for line */
t_stat tmxr_show_log (FILE *st, UNIT *uptr, int32 val, void *desc)
@@ -880,7 +999,7 @@ return SCPE_OK;
device indicated in the TMXR structure. That is, the multiplexer lines may
belong to a device other than the one attached to the socket (the HP 2100 MUX
device is one example). Therefore, we must look up the device from the unit
at each call, rather than depending on the DPTR stored in the TMXR.
at each call, rather than depending on the dptr stored in the TMXR.
*/
TMLN *tmxr_find_ldsc (UNIT *uptr, int32 val, TMXR *mp)
@@ -898,110 +1017,146 @@ return mp->ldsc + val; /* line descriptor */
/* Set the line connection order.
Example command for eight-line multiplexer:
This validation routine is called to set the connection order for the
multiplexer whose TMXR pointer is passed in the "desc" parameter. It parses
the line order list, specified by the "cptr" parameter, of commands such as:
SET <dev> LINEORDER=1;5;2-4;7
SET <dev> LINEORDER=4-7
SET <dev> LINEORDER=1;5;2-4;7;ALL
SET <dev> LINEORDER=ALL
Resulting connection order: 1,5,2,3,4,7,0,6.
Assuming an 8-channel multiplexer, the first form sets the connection order
to line numbers 4, 5, 6, and 7. The remaining lines will not be connected; a
connection attempt will be refused with "All connections busy." The second
form sets the connection order to line 1, 5, 2, 3, 4, 7, 0, and 6. The
trailing "ALL" parameter causes any unspecified lines to be added to the
connection order in ascending value. The third form sets the order to lines
0-7, which is the default order in the absence of a line connection order
array.
Parameters:
- uptr = (not used)
- val = (not used)
- cptr = pointer to first character of range specification
- desc = pointer to multiplexer's TMXR structure
The range of accepted line numbers, including those implied by "ALL", can be
restricted by specifying a non-zero "val" parameter, with the upper 16 bits
specifying the maximum line number, and the lower 16 bits specifying the
minimum line number. If a minimum is specified but a maximum is not (i.e.,
is zero), the maximum is the last line number defined by the multiplexer
descriptor.
On entry, cptr points to the value portion of the command string, which may
be either a semicolon-separated list of line ranges or the keyword ALL.
The "uptr" parameter is not used.
On entry, "cptr" points to the value portion of the command string, which may
be either a semicolon-separated list of line ranges or the keyword "ALL". If
"ALL" is specified, it must be the last (or only) item in the list.
If a line connection order array is not defined in the multiplexer
descriptor, the command is rejected. If the specified range encompasses all
of the lines, the first value of the connection order array is set to -1 to
descriptor, or a line range string is not present, or the optional minimum
and maximum restrictions in the "val" parameter are not valid, the command is
rejected. If the specified range encompasses all of the lines defined by the
multiplexer, the first value of the connection order array is set to -1 to
indicate sequential connection order. Otherwise, the line values in the
array are set to the order specified by the command string. All values are
populated, first with those explicitly specified in the command string, and
then in ascending sequence with those not specified.
array are set to the order specified by the command string. If fewer values
are supplied than there are lines supported by the device, and the final
parameter is not ALL, the remaining lines will be inaccessible and are
indicated by a -1 value after the last specified value.
If an error occurs, the original line order is not disturbed.
*/
t_stat tmxr_set_lnorder (UNIT *uptr, int32 val, char *cptr, void *desc)
{
TMXR *mp = (TMXR *) desc;
char *tptr;
t_addr low, high, max = (t_addr) mp->lines - 1;
int32 *list;
TMXR *mp = (TMXR *) desc;
char *tptr;
t_addr low, high, min, max;
int32 *list;
t_bool *set;
uint32 line, idx = 0;
uint32 line, idx;
t_addr lncount = (t_addr) (mp->lines - 1);
t_stat result = SCPE_OK;
if (mp->lnorder == NULL) /* line connection order undefined? */
return SCPE_NXPAR; /* "Non-existent parameter" error */
if (mp->lnorder == NULL) /* if the connection order array is not defined */
return SCPE_NXPAR; /* then report a "Non-existent parameter" error */
else if ((cptr == NULL) || (*cptr == '\0')) /* line range not supplied? */
return SCPE_MISVAL; /* "Missing value" error */
else if ((cptr == NULL) || (*cptr == '\0')) /* otherwise if a line range was not supplied */
return SCPE_MISVAL; /* then report a "Missing value" error */
list = (int32 *) calloc (mp->lines, sizeof (int32)); /* allocate new line order array */
else { /* otherwise */
min = (t_addr) (val & 0xFFFF); /* split the restriction into */
max = (t_addr) ((val >> 16) & 0xFFFF); /* minimum and maximum line numbers */
if (list == NULL) /* allocation failed? */
return SCPE_MEM; /* report it */
if (max == 0) /* if the maximum line number isn't specified */
max = lncount; /* then use the defined maximum */
set = (t_bool *) calloc (mp->lines, sizeof (t_bool)); /* allocate line set tracking array */
if (min > lncount || max > lncount || min > max) /* if the restriction isn't valid */
return SCPE_IERR; /* then report an "Internal error" */
}
if (set == NULL) { /* allocation failed? */
free (list); /* free successful list allocation */
return SCPE_MEM; /* report it */
list = (int32 *) calloc (mp->lines, sizeof (int32)); /* allocate the new line order array */
if (list == NULL) /* if the allocation failed */
return SCPE_MEM; /* then report a "Memory exhausted" error */
set = (t_bool *) calloc (mp->lines, sizeof (t_bool)); /* allocate the line set tracking array */
if (set == NULL) { /* if the allocation failed */
free (list); /* then free the successful list allocation */
return SCPE_MEM; /* and report a "Memory exhausted" error */
}
tptr = cptr + strlen (cptr); /* append a semicolon */
*tptr++ = ';'; /* to the command string */
*tptr = '\0'; /* to make parsing easier for get_range */
*tptr = '\0'; /* to make parsing easier */
idx = 0; /* initialize the index of ordered values */
while (*cptr != '\0') { /* while characters remain in the command string */
if (strncmp (cptr, "ALL;", 4) == 0) { /* if the parameter is "ALL" */
if (val != 0 || idx > 0 && idx <= max) /* then if some lines are restrictied or unspecified */
for (line = min; line <= max; line++) /* then fill them in sequentially */
if (set [line] == FALSE) /* setting each unspecified line */
list [idx++] = line; /* into the line order */
cptr = cptr + 4; /* advance past "ALL" and the trailing semicolon */
if (*cptr != '\0') /* if "ALL" is not the last parameter */
result = SCPE_2MARG; /* then report extraneous items */
break; /* "ALL" terminates the order list */
}
while (*cptr) { /* parse command string */
cptr = get_range (NULL, cptr, &low, &high, 10, max, ';'); /* get a line range */
if (cptr == NULL) { /* parsing error? */
result = SCPE_ARG; /* "Invalid argument" error */
break;
if (cptr == NULL) { /* if a parsing error occurred */
result = SCPE_ARG; /* then report an invalid argument */
break; /* and terminate the parse */
}
else if ((low > max) || (high > max)) { /* line out of range? */
result = SCPE_SUB; /* "Subscript out of range" error */
break;
else if (low < min || low > max || high > max) { /* otherwise if the line number is invalid */
result = SCPE_SUB; /* then report the subscript is out of range */
break; /* and terminate the parse */
}
else if ((low == 0) && (high == max)) { /* entire line range specified? */
list [0] = -1; /* set sequential order flag */
idx = (uint32) max + 1; /* indicate no fill-in needed */
break;
}
else
for (line = (uint32) low; line <= (uint32) high; line++) /* see if previously specified */
if (set [line] == FALSE) { /* not already specified? */
set [line] = TRUE; /* now it is */
list [idx] = line; /* add line to connection order */
idx = idx + 1; /* bump "specified" count */
else /* otherwise it's a valid range */
for (line = (uint32) low; line <= (uint32) high; line++) /* so add the line(s) to the order */
if (set [line] == FALSE) { /* if the line number has not been specified */
set [line] = TRUE; /* then now it is */
list [idx++] = line; /* and add it to the connection order */
}
}
if (result == SCPE_OK) { /* assignment successful? */
if (idx <= max) /* any lines not specified? */
for (line = 0; line <= max; line++) /* fill them in sequentially */
if (set [line] == FALSE) { /* specified? */
list [idx] = line; /* no, so add it */
idx = idx + 1;
}
if (result == SCPE_OK) { /* if the assignment succeeded */
if (idx <= max) /* then if any lines were not specified */
list [idx] = -1; /* then terminate the order list after the last one */
memcpy (mp->lnorder, list, mp->lines * sizeof (int32)); /* copy working array to connection array */
memcpy (mp->lnorder, list, /* copy the working array to the connection array */
mp->lines * sizeof (int32));
}
free (list); /* free list allocation */
free (set); /* free set allocation */
free (list); /* free the list allocation */
free (set); /* and the set allocation */
return result;
return result; /* return the status */
}
/* Show line connection order.
/* Show the line connection order.
Parameters:
- st = stream on which output is to be written
@@ -1013,7 +1168,8 @@ return result;
command is rejected. If the first value of the connection order array is set
to -1, then the connection order is sequential. Otherwise, the line values
in the array are printed as a semicolon-separated list. Ranges are printed
where possible to shorten the output.
where possible to shorten the output. A -1 value within the array indicates
the end of the order list.
*/
t_stat tmxr_show_lnorder (FILE *st, UNIT *uptr, int32 val, void *desc)
@@ -1032,7 +1188,7 @@ if (*iptr < 0) /* sequential order indi
else {
low = last = *iptr++; /* set first line value */
for (j = 1; j <= mp->lines; j++) { /* print remaining lines in order list */
for (j = 1; last != -1; j++) { /* print the remaining lines in the order list */
if (j < mp->lines) /* more lines to process? */
i = *iptr++; /* get next line in list */
else /* final iteration */