Commit | Line | Data |
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7f35cb09 GM |
1 | /* |
2 | * Copyright (c) 1984, 1985, 1986 by the Regents of the | |
3 | * University of California and by Gregory Glenn Minshall. | |
4 | * | |
5 | * Permission to use, copy, modify, and distribute these | |
6 | * programs and their documentation for any purpose and | |
7 | * without fee is hereby granted, provided that this | |
8 | * copyright and permission appear on all copies and | |
9 | * supporting documentation, the name of the Regents of | |
10 | * the University of California not be used in advertising | |
11 | * or publicity pertaining to distribution of the programs | |
12 | * without specific prior permission, and notice be given in | |
13 | * supporting documentation that copying and distribution is | |
14 | * by permission of the Regents of the University of California | |
15 | * and by Gregory Glenn Minshall. Neither the Regents of the | |
16 | * University of California nor Gregory Glenn Minshall make | |
17 | * representations about the suitability of this software | |
18 | * for any purpose. It is provided "as is" without | |
19 | * express or implied warranty. | |
20 | */ | |
21 | ||
22 | #ifndef lint | |
23 | static char sccsid[] = "@(#)outbound.c 3.1 10/29/86"; | |
24 | #endif /* lint */ | |
25 | ||
26 | ||
7f35cb09 | 27 | #include <stdio.h> |
da3205fa | 28 | #include <dos.h> |
7f35cb09 GM |
29 | #include "../general.h" |
30 | ||
7f35cb09 GM |
31 | #include "../telnet.ext" |
32 | ||
33 | #include "../ctlr/hostctlr.h" | |
34 | #include "../ctlr/inbound.ext" | |
98e793e6 | 35 | #include "../ctlr/oia.h" |
7f35cb09 GM |
36 | #include "../ctlr/options.ext" |
37 | #include "../ctlr/outbound.ext" | |
38 | #include "../ctlr/screen.h" | |
39 | ||
40 | #include "../keyboard/map3270.ext" | |
41 | ||
42 | #include "../system/globals.h" | |
43 | ||
da3205fa GM |
44 | #include "video.h" |
45 | ||
7f35cb09 GM |
46 | extern void EmptyTerminal(); |
47 | ||
48 | #define CorrectTerminalCursor() ((TransparentClock == OutputClock)? \ | |
49 | terminalCursorAddress:UnLocked? CursorAddress: HighestScreen()) | |
50 | ||
51 | ||
52 | static int terminalCursorAddress; /* where the cursor is on term */ | |
53 | static int screenInitd; /* the screen has been initialized */ | |
54 | static int screenStopped; /* the screen has been stopped */ | |
7f35cb09 GM |
55 | |
56 | static int needToRing; /* need to ring terinal bell */ | |
7f35cb09 | 57 | |
98e793e6 GM |
58 | typedef struct { |
59 | char | |
60 | data, /* The data for this position */ | |
61 | attr; /* The attributes for this position */ | |
62 | } ScreenBuffer; | |
7f35cb09 | 63 | |
98e793e6 | 64 | ScreenBuffer Screen[MAXNUMBERLINES*MAXNUMBERCOLUMNS]; |
da3205fa | 65 | ScreenBuffer saveScreen[sizeof Screen/sizeof Screen[0]]; |
7f35cb09 GM |
66 | |
67 | /* Variables for transparent mode */ | |
7f35cb09 GM |
68 | |
69 | #include "disp_asc.out" | |
70 | ||
71 | \f | |
7f35cb09 GM |
72 | /* OurExitString - designed to keep us from going through infinite recursion */ |
73 | ||
74 | static void | |
75 | OurExitString(file, string, value) | |
76 | FILE *file; | |
77 | char *string; | |
78 | int value; | |
79 | { | |
80 | static int recursion = 0; | |
81 | ||
82 | if (!recursion) { | |
83 | recursion = 1; | |
84 | ExitString(file, string, value); | |
85 | } | |
86 | } | |
87 | ||
88 | ||
7f35cb09 GM |
89 | static void |
90 | GoAway(from, where) | |
91 | char *from; /* routine that gave error */ | |
92 | int where; /* cursor address */ | |
93 | { | |
94 | char foo[100]; | |
95 | ||
96 | sprintf(foo, "ERR from %s at %d (%d, %d)\n", | |
97 | from, where, ScreenLine(where), ScreenLineOffset(where)); | |
98 | OurExitString(stderr, foo, 1); | |
99 | /* NOTREACHED */ | |
100 | } | |
101 | \f | |
da3205fa GM |
102 | /* |
103 | * Routines to deal with the screen. These routines are lifted | |
104 | * from mskermit. | |
105 | */ | |
106 | ||
107 | #define CRT_STATUS 0x3da /* Color card */ | |
108 | #define DISPLAY_ENABLE 0x08 /* Enable */ | |
109 | #define scrseg() ((crt_mode == 7)? 0xb000 : 0xb800) | |
110 | #define scrwait() if (crt_mode != 7) { \ | |
111 | while ((inp(CRT_STATUS)&DISPLAY_ENABLE) == 0) { \ | |
112 | ; \ | |
113 | } \ | |
114 | } | |
115 | static int | |
116 | crt_mode, | |
117 | crt_cols, | |
118 | crt_lins, | |
119 | curpage; | |
120 | ||
121 | /* | |
122 | * Set the cursor position to where it belongs. | |
123 | */ | |
124 | ||
125 | static void | |
126 | setcursor(row, column, page) | |
127 | int | |
128 | row, | |
129 | column, | |
130 | page; | |
131 | { | |
132 | union REGS inregs, outregs; | |
133 | ||
134 | inregs.h.dh = row; | |
135 | inregs.h.dl = column; | |
136 | inregs.h.bh = page; | |
137 | inregs.h.ah = SetCursorPosition; | |
138 | ||
139 | int86(BIOS_VIDEO, &inregs, &outregs); | |
140 | } | |
141 | /* | |
142 | * Read the state of the video system. Put the cursor somewhere | |
143 | * reasonable. | |
144 | */ | |
145 | ||
146 | static void | |
147 | scrini() | |
148 | { | |
149 | union REGS inregs, outregs; | |
150 | ||
151 | inregs.h.ah = CurrentVideoState; | |
152 | int86(BIOS_VIDEO, &inregs, &outregs); | |
153 | ||
154 | crt_mode = outregs.h.al; | |
155 | crt_cols = outregs.h.ah; | |
156 | crt_lins = 25; | |
157 | curpage = outregs.h.bh; | |
158 | ||
159 | inregs.h.ah = ReadCursorPosition; | |
160 | inregs.h.bh = curpage; | |
161 | ||
162 | int86(BIOS_VIDEO, &inregs, &outregs); | |
163 | ||
164 | if (outregs.h.dh > crt_lins) { | |
165 | outregs.h.dh = crt_lins; | |
166 | } | |
167 | if (outregs.h.dl > crt_cols) { | |
168 | outregs.h.dl = crt_cols; | |
169 | } | |
170 | inregs.h.dh = outregs.h.dh; | |
171 | inregs.h.dl = outregs.h.dl; | |
172 | inregs.h.bh = curpage; | |
173 | ||
174 | inregs.h.ah = SetCursorPosition; | |
175 | int86(BIOS_VIDEO, &inregs, &outregs); | |
176 | } | |
177 | ||
178 | ||
179 | static void | |
180 | scrwrite(source, length, offset) | |
181 | ScreenBuffer *source; | |
182 | int | |
183 | length, | |
184 | offset; | |
185 | { | |
186 | struct SREGS segregs; | |
187 | ||
188 | segread(&segregs); /* read the current segment register */ | |
189 | ||
190 | scrwait(); | |
84f75426 GM |
191 | movedata(segregs.ds, source, scrseg(), sizeof *source*offset, |
192 | sizeof *source*length); | |
da3205fa GM |
193 | } |
194 | ||
195 | static void | |
196 | scrsave(buffer) | |
197 | ScreenBuffer *buffer; | |
198 | { | |
199 | struct SREGS segregs; | |
200 | ||
201 | segread(&segregs); /* read the current segment register */ | |
202 | ||
203 | scrwait(); | |
84f75426 | 204 | movedata(scrseg(), 0, segregs.ds, buffer, crt_cols*crt_lins*2); |
da3205fa GM |
205 | } |
206 | ||
207 | static void | |
208 | scrrest(buffer) | |
209 | ScreenBuffer *buffer; | |
210 | { | |
84f75426 | 211 | scrwrite(buffer, crt_cols*crt_lins, 0); |
da3205fa GM |
212 | } |
213 | \f | |
7f35cb09 | 214 | static void |
98e793e6 | 215 | TryToSend() |
7f35cb09 | 216 | { |
84f75426 | 217 | #define STANDOUT 0x0a /* Highlighted mode */ |
98e793e6 | 218 | #define NORMAL 0x02 /* Normal mode */ |
84f75426 GM |
219 | #define NONDISPLAY 0x00 /* Don't display */ |
220 | ||
221 | #define DoAttribute(a) \ | |
222 | if (screenIsFormatted) { \ | |
223 | if (IsNonDisplayAttr(a)) { \ | |
224 | a = NONDISPLAY; /* don't display */ \ | |
225 | } else if (IsHighlightedAttr(a)) { \ | |
226 | a = STANDOUT; \ | |
227 | } else { \ | |
228 | a = NORMAL; \ | |
229 | } \ | |
230 | } else { \ | |
231 | a = NORMAL; /* do display on unformatted */\ | |
7f35cb09 GM |
232 | } |
233 | ScreenImage *p, *upper; | |
98e793e6 | 234 | ScreenBuffer *sp; |
7f35cb09 | 235 | int fieldattr; /* spends most of its time == 0 or 1 */ |
84f75426 | 236 | int screenIsFormatted = FormattedScreen(); |
7f35cb09 GM |
237 | |
238 | /* OK. We want to do this a quickly as possible. So, we assume we | |
239 | * only need to go from Lowest to Highest. However, if we find a | |
240 | * field in the middle, we do the whole screen. | |
241 | * | |
242 | * In particular, we separate out the two cases from the beginning. | |
243 | */ | |
244 | if ((Highest != HighestScreen()) || (Lowest != LowestScreen())) { | |
98e793e6 | 245 | sp = &Screen[Lowest]; |
7f35cb09 | 246 | p = &Host[Lowest]; |
7f35cb09 GM |
247 | upper = &Host[Highest]; |
248 | fieldattr = FieldAttributes(Lowest); | |
249 | DoAttribute(fieldattr); /* Set standout, non-display status */ | |
7f35cb09 GM |
250 | |
251 | while (p <= upper) { | |
252 | if (IsStartFieldPointer(p)) { /* New field? */ | |
253 | Highest = HighestScreen(); | |
254 | Lowest = LowestScreen(); | |
98e793e6 | 255 | TryToSend(); /* Recurse */ |
7f35cb09 GM |
256 | return; |
257 | } else if (fieldattr) { /* Should we display? */ | |
84f75426 GM |
258 | /* Display translated data */ |
259 | sp->data = disp_asc[GetHostPointer(p)]; | |
7f35cb09 | 260 | } else { |
98e793e6 | 261 | sp->data = ' '; |
7f35cb09 | 262 | } |
84f75426 | 263 | sp->attr = fieldattr; |
7f35cb09 | 264 | p++; |
98e793e6 | 265 | sp++; |
7f35cb09 GM |
266 | } |
267 | } else { /* Going from Lowest to Highest */ | |
98e793e6 | 268 | ScreenImage *End = &Host[ScreenSize]-1; |
7f35cb09 | 269 | |
98e793e6 | 270 | sp = Screen; |
7f35cb09 GM |
271 | p = Host; |
272 | fieldattr = FieldAttributes(LowestScreen()); | |
273 | DoAttribute(fieldattr); /* Set standout, non-display status */ | |
274 | ||
275 | while (p <= End) { | |
276 | if (IsStartFieldPointer(p)) { /* New field? */ | |
7f35cb09 GM |
277 | fieldattr = FieldAttributesPointer(p); /* Get attributes */ |
278 | DoAttribute(fieldattr); /* Set standout, non-display */ | |
84f75426 GM |
279 | } |
280 | if (fieldattr) { /* Should we display? */ | |
281 | /* Display translated data */ | |
282 | sp->data = disp_asc[GetHostPointer(p)]; | |
7f35cb09 | 283 | } else { |
84f75426 | 284 | sp->data = ' '; |
7f35cb09 | 285 | } |
84f75426 | 286 | sp->attr = fieldattr; |
7f35cb09 | 287 | p++; |
98e793e6 | 288 | sp++; |
7f35cb09 GM |
289 | } |
290 | } | |
98e793e6 | 291 | terminalCursorAddress = CorrectTerminalCursor(); |
84f75426 GM |
292 | /* |
293 | * We might be here just to update the cursor address. | |
294 | */ | |
295 | if (Highest >= Lowest) { | |
296 | scrwrite(Screen+Lowest, (1+Highest-Lowest), Lowest); | |
297 | } | |
da3205fa | 298 | setcursor(ScreenLine(terminalCursorAddress), |
98e793e6 | 299 | ScreenLineOffset(terminalCursorAddress), 0); |
7f35cb09 GM |
300 | Lowest = HighestScreen()+1; |
301 | Highest = LowestScreen()-1; | |
7f35cb09 | 302 | if (needToRing) { |
98e793e6 | 303 | DataToTerminal("\7", 1); |
7f35cb09 GM |
304 | needToRing = 0; |
305 | } | |
7f35cb09 GM |
306 | return; |
307 | } | |
7f35cb09 GM |
308 | \f |
309 | /* InitTerminal - called to initialize the screen, etc. */ | |
310 | ||
311 | void | |
312 | InitTerminal() | |
313 | { | |
7f35cb09 GM |
314 | InitMapping(); /* Go do mapping file (MAP3270) first */ |
315 | if (!screenInitd) { /* not initialized */ | |
01929848 GM |
316 | MaxNumberLines = 24; /* XXX */ |
317 | MaxNumberColumns = 80; /* XXX */ | |
98e793e6 | 318 | scrini(); |
da3205fa | 319 | scrsave(saveScreen); /* Save the screen buffer away */ |
98e793e6 | 320 | ClearArray(Screen); |
7f35cb09 | 321 | terminalCursorAddress = SetBufferAddress(0,0); |
7f35cb09 GM |
322 | screenInitd = 1; |
323 | screenStopped = 0; /* Not stopped */ | |
324 | } | |
325 | Initialized = 1; | |
326 | } | |
327 | ||
328 | ||
329 | /* StopScreen - called when we are going away... */ | |
330 | ||
331 | void | |
332 | StopScreen(doNewLine) | |
333 | int doNewLine; | |
334 | { | |
335 | if (screenInitd && !screenStopped) { | |
da3205fa GM |
336 | scrrest(saveScreen); |
337 | setcursor(NumberLines-1, NumberColumns-1, 0); | |
7f35cb09 GM |
338 | } |
339 | } | |
340 | ||
341 | ||
342 | /* RefreshScreen - called to cause the screen to be refreshed */ | |
343 | ||
344 | void | |
345 | RefreshScreen() | |
346 | { | |
98e793e6 GM |
347 | Highest = HighestScreen(); |
348 | Lowest = LowestScreen(); | |
349 | TryToSend(); | |
7f35cb09 GM |
350 | } |
351 | ||
352 | ||
353 | /* ConnectScreen - called to reconnect to the screen */ | |
354 | ||
355 | void | |
356 | ConnectScreen() | |
357 | { | |
358 | if (screenInitd) { | |
7f35cb09 | 359 | RefreshScreen(); |
7f35cb09 GM |
360 | screenStopped = 0; |
361 | } | |
362 | } | |
363 | ||
364 | /* LocalClearScreen() - clear the whole ball of wax, cheaply */ | |
365 | ||
366 | void | |
367 | LocalClearScreen() | |
368 | { | |
7f35cb09 | 369 | Clear3270(); |
98e793e6 GM |
370 | Lowest = LowestScreen(); /* everything in sync... */ |
371 | Highest = HighestScreen(); | |
372 | TryToSend(); | |
7f35cb09 | 373 | } |
98e793e6 GM |
374 | \f |
375 | /* | |
376 | * Implement the bell/error message function. | |
377 | */ | |
378 | ||
379 | int | |
380 | bellwinup = 0; /* If != 0, length of bell message */ | |
381 | static int | |
382 | bellpos0 = 0; /* Where error message goes */ | |
383 | ||
384 | static char bellstring[100];/* Where message goes */ | |
7f35cb09 | 385 | |
98e793e6 GM |
386 | #define BELL_SPACES 2 /* 2 spaces between border and bell */ |
387 | ||
388 | #define BELL_HIGH_LOW(h,l) { \ | |
389 | h = bellpos0+2*NumberColumns+bellwinup+BELL_SPACES*2; \ | |
390 | l = bellpos0; \ | |
391 | } | |
7f35cb09 GM |
392 | |
393 | void | |
394 | BellOff() | |
395 | { | |
396 | if (bellwinup) { | |
98e793e6 GM |
397 | BELL_HIGH_LOW(Highest,Lowest); |
398 | TryToSend(); | |
7f35cb09 GM |
399 | } |
400 | } | |
401 | ||
402 | ||
403 | void | |
404 | RingBell(s) | |
405 | char *s; | |
406 | { | |
407 | needToRing = 1; | |
408 | if (s) { | |
409 | int len = strlen(s); | |
410 | ||
98e793e6 GM |
411 | if (len > sizeof bellstring-1) { |
412 | OurExitString(stderr, "Bell string too long.", 1); | |
7f35cb09 | 413 | } |
98e793e6 GM |
414 | memcpy(bellstring, s, len+1); |
415 | BELL_HIGH_LOW(Highest,Lowest); | |
416 | TryToSend(); | |
7f35cb09 GM |
417 | } |
418 | } | |
419 | \f | |
98e793e6 GM |
420 | /* |
421 | * Update the OIA area. | |
422 | */ | |
423 | ||
424 | void | |
425 | ScreenOIA(oia) | |
426 | OIA *oia; | |
427 | { | |
428 | } | |
429 | \f | |
7f35cb09 GM |
430 | |
431 | /* returns a 1 if no more output available (so, go ahead and block), | |
432 | or a 0 if there is more output available (so, just poll the other | |
433 | sources/destinations, don't block). | |
434 | */ | |
435 | ||
436 | int | |
437 | DoTerminalOutput() | |
438 | { | |
439 | /* called just before a select to conserve IO to terminal */ | |
440 | if (!Initialized) { | |
441 | return 1; /* No output if not initialized */ | |
442 | } | |
443 | if ((Lowest <= Highest) || needToRing || | |
444 | (terminalCursorAddress != CorrectTerminalCursor())) { | |
98e793e6 | 445 | TryToSend(); |
7f35cb09 GM |
446 | } |
447 | if (Lowest > Highest) { | |
448 | return 1; /* no more output now */ | |
449 | } else { | |
450 | return 0; /* more output for future */ | |
451 | } | |
452 | } | |
453 | \f | |
454 | /* | |
455 | * The following are defined to handle transparent data. | |
456 | */ | |
457 | ||
458 | void | |
459 | TransStop() | |
460 | { | |
7f35cb09 GM |
461 | RefreshScreen(); |
462 | } | |
463 | ||
464 | void | |
465 | TransOut(buffer, count) | |
466 | unsigned char *buffer; | |
467 | int count; | |
468 | { | |
7f35cb09 GM |
469 | |
470 | while (DoTerminalOutput() == 0) { | |
98e793e6 | 471 | ; |
7f35cb09 | 472 | } |
7f35cb09 GM |
473 | (void) DataToTerminal(buffer, count); |
474 | } | |
98e793e6 GM |
475 | \f |
476 | /* | |
477 | * init_screen() | |
478 | * | |
479 | * Initialize variables used by screen. | |
480 | */ | |
7f35cb09 | 481 | |
98e793e6 GM |
482 | void |
483 | init_screen() | |
7f35cb09 | 484 | { |
98e793e6 | 485 | bellwinup = 0; |
7f35cb09 | 486 | } |
98e793e6 GM |
487 | |
488 |