Commit | Line | Data |
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d4c3b068 | 1 | /* |
992de934 | 2 | * Copyright (c) 1984-1987 by the Regents of the |
d4c3b068 GM |
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 | |
c578271f | 23 | static char sccsid[] = "@(#)termout.c 3.1 (Berkeley) %G%"; |
d4c3b068 GM |
24 | #endif /* lint */ |
25 | ||
26 | ||
27 | #if defined(unix) | |
28 | #include <signal.h> | |
29 | #include <sgtty.h> | |
30 | #endif | |
31 | #include <stdio.h> | |
32 | #include <curses.h> | |
33 | ||
a935c11a | 34 | #include "../general/general.h" |
d4ee8ee5 | 35 | |
d4c3b068 GM |
36 | #include "terminal.h" |
37 | ||
38 | #include "../telnet.ext" | |
39 | ||
4718d085 | 40 | #include "../api/disp_asc.h" |
eab93ac8 | 41 | |
d4c3b068 GM |
42 | #include "../ctlr/hostctlr.h" |
43 | #include "../ctlr/inbound.ext" | |
4b3aebcc | 44 | #include "../ctlr/oia.h" |
d4c3b068 GM |
45 | #include "../ctlr/options.ext" |
46 | #include "../ctlr/outbound.ext" | |
47 | #include "../ctlr/screen.h" | |
48 | ||
a935c11a | 49 | #include "../ascii/map3270.ext" |
d4c3b068 | 50 | |
a935c11a | 51 | #include "../general/globals.h" |
d4c3b068 GM |
52 | |
53 | extern void EmptyTerminal(); | |
54 | ||
55 | #define CorrectTerminalCursor() ((TransparentClock == OutputClock)? \ | |
31635ca9 | 56 | CursorAddress:UnLocked? CursorAddress: HighestScreen()) |
d4c3b068 GM |
57 | |
58 | ||
7e6a2e47 GM |
59 | static int terminalCursorAddress; /* where the cursor is on term */ |
60 | static int screenInitd; /* the screen has been initialized */ | |
61 | static int screenStopped; /* the screen has been stopped */ | |
d4c3b068 GM |
62 | static int max_changes_before_poll; /* how many characters before looking */ |
63 | /* at terminal and net again */ | |
d4c3b068 | 64 | |
7e6a2e47 | 65 | static int needToRing; /* need to ring terinal bell */ |
d4c3b068 GM |
66 | static char *bellSequence = "\07"; /* bell sequence (may be replaced by |
67 | * VB during initialization) | |
68 | */ | |
7e6a2e47 | 69 | static WINDOW *bellwin = 0; /* The window the bell message is in */ |
d4c3b068 GM |
70 | int bellwinup = 0; /* Are we up with it or not */ |
71 | ||
72 | #if defined(unix) | |
73 | static char *KS, *KE; | |
74 | #endif /* defined(unix) */ | |
75 | ||
7e74e688 | 76 | |
7e74e688 | 77 | static int inHighlightMode = 0; |
d4ee8ee5 | 78 | ScreenImage Terminal[MAXSCREENSIZE]; |
7e74e688 GM |
79 | |
80 | /* Variables for transparent mode */ | |
d4c3b068 GM |
81 | #if defined(unix) |
82 | static int tcflag = -1; /* transparent mode command flag */ | |
83 | static int savefd[2]; /* for storing fds during transcom */ | |
7e74e688 | 84 | extern int tin, tout; /* file descriptors */ |
d4c3b068 | 85 | #endif /* defined(unix) */ |
d4c3b068 | 86 | \f |
19003317 GM |
87 | |
88 | /* | |
89 | * init_screen() | |
90 | * | |
91 | * Initialize variables used by screen. | |
92 | */ | |
93 | ||
94 | void | |
95 | init_screen() | |
96 | { | |
97 | bellwinup = 0; | |
19003317 | 98 | inHighlightMode = 0; |
d4ee8ee5 | 99 | ClearArray(Terminal); |
19003317 GM |
100 | } |
101 | ||
102 | ||
d4c3b068 GM |
103 | /* OurExitString - designed to keep us from going through infinite recursion */ |
104 | ||
105 | static void | |
106 | OurExitString(file, string, value) | |
107 | FILE *file; | |
108 | char *string; | |
109 | int value; | |
110 | { | |
111 | static int recursion = 0; | |
112 | ||
113 | if (!recursion) { | |
114 | recursion = 1; | |
115 | ExitString(file, string, value); | |
116 | } | |
117 | } | |
118 | ||
119 | ||
120 | /* DoARefresh */ | |
121 | ||
122 | static void | |
123 | DoARefresh() | |
124 | { | |
125 | if (ERR == refresh()) { | |
126 | OurExitString(stderr, "ERR from refresh\n", 1); | |
127 | } | |
128 | } | |
129 | ||
130 | static void | |
131 | GoAway(from, where) | |
132 | char *from; /* routine that gave error */ | |
133 | int where; /* cursor address */ | |
134 | { | |
135 | char foo[100]; | |
136 | ||
137 | sprintf(foo, "ERR from %s at %d (%d, %d)\n", | |
138 | from, where, ScreenLine(where), ScreenLineOffset(where)); | |
139 | OurExitString(stderr, foo, 1); | |
140 | /* NOTREACHED */ | |
141 | } | |
142 | \f | |
d4c3b068 GM |
143 | /* What is the screen address of the attribute byte for the terminal */ |
144 | ||
145 | static int | |
146 | WhereTermAttrByte(p) | |
147 | register int p; | |
148 | { | |
149 | register int i; | |
150 | ||
151 | i = p; | |
152 | ||
153 | do { | |
154 | if (TermIsStartField(i)) { | |
155 | return(i); | |
156 | } | |
157 | i = ScreenDec(i); | |
158 | } while (i != p); | |
159 | ||
160 | return(LowestScreen()); /* unformatted screen... */ | |
161 | } | |
d4c3b068 GM |
162 | \f |
163 | /* | |
164 | * There are two algorithms for updating the screen. | |
165 | * The first, SlowScreen() optimizes the line between the | |
166 | * computer and the screen (say a 9600 baud line). To do | |
167 | * this, we break out of the loop every so often to look | |
168 | * at any pending input from the network (so that successive | |
169 | * screens will only partially print until the final screen, | |
170 | * the one the user possibly wants to see, is displayed | |
171 | * in its entirety). | |
172 | * | |
173 | * The second algorithm tries to optimize CPU time (by | |
174 | * being simpler) at the cost of the bandwidth to the | |
175 | * screen. | |
176 | * | |
177 | * Of course, curses(3X) gets in here also. | |
178 | */ | |
179 | ||
180 | ||
d4c3b068 GM |
181 | #if defined(NOT43) |
182 | static int | |
183 | #else /* defined(NOT43) */ | |
184 | static void | |
185 | #endif /* defined(NOT43) */ | |
186 | SlowScreen() | |
187 | { | |
188 | register int pointer; | |
189 | register int c; | |
190 | register int fieldattr; | |
191 | register int columnsleft; | |
192 | ||
193 | # define SetHighlightMode(p) { \ | |
194 | if (!IsStartField(p) && IsHighlightedAttr(fieldattr)) { \ | |
195 | if (!inHighlightMode) { \ | |
196 | inHighlightMode = 1; \ | |
197 | standout(); \ | |
198 | } \ | |
199 | } else { \ | |
200 | if (inHighlightMode) { \ | |
201 | inHighlightMode = 0; \ | |
202 | standend(); \ | |
203 | } \ | |
204 | } \ | |
205 | } | |
206 | ||
207 | # define DoCharacterAt(c,p) { \ | |
208 | SetTerminal(p, c); \ | |
209 | if (p != HighestScreen()) { \ | |
210 | c = TerminalCharacterAttr(disp_asc[c&0xff], p, \ | |
211 | fieldattr); \ | |
212 | if (terminalCursorAddress != p) { \ | |
213 | if (ERR == mvaddch(ScreenLine(p), \ | |
214 | ScreenLineOffset(p), c)) {\ | |
215 | GoAway("mvaddch", p); \ | |
216 | } \ | |
217 | } else { \ | |
218 | if (ERR == addch(c)) {\ | |
219 | GoAway("addch", p); \ | |
220 | } \ | |
221 | } \ | |
222 | terminalCursorAddress = ScreenInc(p); \ | |
223 | } \ | |
224 | } | |
225 | ||
226 | ||
227 | /* run through screen, printing out non-null lines */ | |
228 | ||
229 | /* There are two separate reasons for wanting to terminate this | |
230 | * loop early. One is to respond to new input (either from | |
231 | * the terminal or from the network [host]). For this reason, | |
232 | * we expect to see 'HaveInput' come true when new input comes in. | |
233 | * | |
234 | * The second reason is a bit more difficult (for me) to understand. | |
235 | * Basically, we don't want to get too far ahead of the characters that | |
236 | * appear on the screen. Ideally, we would type out a few characters, | |
237 | * wait until they appeared on the screen, then type out a few more. | |
238 | * The reason for this is that the user, on seeing some characters | |
239 | * appear on the screen may then start to type something. We would | |
240 | * like to look at what the user types at about the same 'time' | |
241 | * (measured by characters being sent to the terminal) that the | |
242 | * user types them. For this reason, what we would like to do | |
243 | * is update a bit, then call curses to do a refresh, flush the | |
244 | * output to the terminal, then wait until the terminal data | |
245 | * has been sent. | |
246 | * | |
247 | * Note that curses is useful for, among other things, deciding whether | |
248 | * or not to send :ce: (clear to end of line), so we should call curses | |
249 | * at end of lines (beginning of next lines). | |
250 | * | |
251 | * The problems here are the following: If we do lots of write(2)s, | |
252 | * we will be doing lots of context switches, thus lots of overhead | |
253 | * (which we have already). Second, if we do a select to wait for | |
254 | * the output to drain, we have to contend with the fact that NOW | |
255 | * we are scheduled to run, but who knows what the scheduler will | |
256 | * decide when the output has caught up. | |
257 | */ | |
258 | ||
259 | if (Highest == HighestScreen()) { | |
260 | Highest = ScreenDec(Highest); /* else, while loop will never end */ | |
261 | } | |
262 | if (Lowest < LowestScreen()) { | |
263 | Lowest = LowestScreen(); /* could be -1 in some cases with | |
264 | * unformatted screens. | |
265 | */ | |
266 | } | |
267 | if (Highest >= (pointer = Lowest)) { | |
268 | /* if there is anything to do, do it. We won't terminate | |
269 | * the loop until we've gone at least to Highest. | |
270 | */ | |
271 | while ((pointer <= Highest) && !HaveInput) { | |
272 | ||
273 | /* point at the next place of disagreement */ | |
274 | pointer += (bunequal(Host+pointer, Terminal+pointer, | |
275 | (Highest-pointer+1)*sizeof Host[0])/sizeof Host[0]); | |
276 | ||
277 | /* how many characters to change until the end of the | |
278 | * current line | |
279 | */ | |
280 | columnsleft = NumberColumns - ScreenLineOffset(pointer); | |
281 | /* | |
282 | * Make sure we are where we think we are. | |
283 | */ | |
284 | move(ScreenLine(pointer), ScreenLineOffset(pointer)); | |
285 | ||
286 | /* what is the field attribute of the current position */ | |
287 | fieldattr = FieldAttributes(WhereAttrByte(pointer)); | |
288 | ||
289 | if ((IsStartField(pointer) != TermIsStartField(pointer)) || | |
290 | (IsStartField(pointer) && | |
291 | fieldattr != TermAttributes(pointer))) { | |
292 | ||
293 | int oldterm; | |
294 | ||
295 | oldterm = TermAttributes(pointer); | |
296 | if (IsStartField(pointer)) { | |
297 | TermNewField(pointer, fieldattr); | |
298 | SetTerminal(pointer, 0); | |
299 | } else { | |
300 | TermDeleteField(pointer); | |
301 | } | |
302 | /* We always do the first character in a divergent | |
303 | * field, since otherwise the start of a field in | |
304 | * the Host structure may leave a highlighted blank | |
305 | * on the screen, and the start of a field in the | |
306 | * Terminal structure may leave a non-highlighted | |
307 | * something in the middle of a highlighted field | |
308 | * on the screen. | |
309 | */ | |
310 | SetHighlightMode(pointer); | |
311 | c = GetHost(pointer); | |
312 | DoCharacterAt(c,pointer); /* MACRO */ | |
313 | ||
314 | if (NotVisuallyCompatibleAttributes | |
315 | (pointer, fieldattr, oldterm)) { | |
316 | int j; | |
317 | ||
318 | j = pointer; | |
319 | ||
320 | pointer = ScreenInc(pointer); | |
321 | if (!(--columnsleft)) { | |
322 | DoARefresh(); | |
323 | EmptyTerminal(); | |
324 | move(ScreenLine(pointer), 0); | |
325 | columnsleft = NumberColumns; | |
326 | } | |
327 | SetHighlightMode(pointer); /* Turn on highlighting */ | |
400916e8 GM |
328 | while ((!IsStartField(pointer)) && |
329 | (!TermIsStartField(pointer))) { | |
d4c3b068 GM |
330 | c = GetHost(pointer); |
331 | DoCharacterAt(c,pointer); /* MACRO */ | |
332 | pointer = ScreenInc(pointer); | |
333 | if (!(--columnsleft)) { | |
334 | DoARefresh(); | |
335 | EmptyTerminal(); | |
336 | move(ScreenLine(pointer), 0); | |
337 | columnsleft = NumberColumns; | |
338 | /* We don't look at HaveInput here, since | |
339 | * if we leave this loop before the end of | |
340 | * the 3270 field, we could have pointer | |
341 | * higher than Highest. This would cause | |
342 | * us to end the highest "while" loop, | |
343 | * but we may, in fact, need to go around the | |
344 | * screen once again. | |
345 | */ | |
346 | } | |
347 | /* The loop needs to be protected | |
348 | * from the situation where there had been only | |
349 | * one field on the Terminal, and none on the Host. | |
350 | * In this case, we have just deleted our last | |
351 | * field. Hence, the break. | |
352 | */ | |
353 | if (j == pointer) { | |
354 | break; | |
355 | } | |
356 | } | |
357 | if (IsStartField(pointer) && !TermIsStartField(pointer)) { | |
358 | /* Remember what the terminal looked like */ | |
359 | TermNewField(pointer, oldterm); | |
360 | /* | |
361 | * The danger here is that the current position may | |
362 | * be the start of a Host field. If so, and the | |
363 | * field is highlighted, and our terminal was | |
364 | * highlighted, then we will leave a highlighted | |
365 | * blank at this position. | |
366 | */ | |
367 | SetHighlightMode(pointer); | |
368 | c = GetHost(pointer); | |
369 | DoCharacterAt(c,pointer); | |
370 | } | |
371 | /* We could be in the situation of needing to exit. | |
372 | * This could happen if the current field wrapped around | |
373 | * the end of the screen. | |
374 | */ | |
375 | if (j > pointer) { | |
400916e8 GM |
376 | /* |
377 | * pointer is guaranteed to be higher than Highest... | |
378 | */ | |
379 | pointer = Highest+1; /* We did the highest thing */ | |
d4c3b068 GM |
380 | break; |
381 | } | |
382 | } else { | |
383 | c = GetHost(pointer); | |
384 | /* We always do the first character in a divergent | |
385 | * field, since otherwise the start of a field in | |
386 | * the Host structure may leave a highlighted blank | |
387 | * on the screen, and the start of a field in the | |
388 | * Terminal structure may leave a non-highlighted | |
389 | * something in the middle of a highlighted field | |
390 | * on the screen. | |
391 | */ | |
392 | SetHighlightMode(pointer); | |
393 | DoCharacterAt(c,pointer); | |
394 | } | |
395 | } else { | |
396 | SetHighlightMode(pointer); | |
a06dcafb GM |
397 | /* |
398 | * The following will terminate at least when we get back | |
d4c3b068 GM |
399 | * to the original 'pointer' location (since we force |
400 | * things to be equal). | |
401 | */ | |
402 | while (((c = GetHost(pointer)) != GetTerminal(pointer)) && | |
403 | !IsStartField(pointer) && !TermIsStartField(pointer)) { | |
404 | DoCharacterAt(c, pointer); | |
405 | pointer = ScreenInc(pointer); | |
406 | if (!(--columnsleft)) { | |
407 | DoARefresh(); | |
408 | EmptyTerminal(); | |
409 | if (HaveInput) { /* if input came in, take it */ | |
410 | break; | |
411 | } | |
412 | move(ScreenLine(pointer), 0); | |
413 | columnsleft = NumberColumns; | |
414 | } | |
415 | } | |
416 | } | |
417 | } | |
418 | } | |
419 | DoARefresh(); | |
420 | Lowest = pointer; | |
421 | if (Lowest > Highest) { /* if we finished input... */ | |
422 | Lowest = HighestScreen()+1; | |
423 | Highest = LowestScreen()-1; | |
424 | terminalCursorAddress = CorrectTerminalCursor(); | |
425 | if (ERR == move(ScreenLine(terminalCursorAddress), | |
426 | ScreenLineOffset(terminalCursorAddress))) { | |
427 | GoAway("move", terminalCursorAddress); | |
428 | } | |
429 | DoARefresh(); | |
430 | if (needToRing) { | |
431 | StringToTerminal(bellSequence); | |
432 | needToRing = 0; | |
433 | } | |
434 | } | |
435 | EmptyTerminal(); /* move data along */ | |
436 | return; | |
437 | } | |
d4c3b068 GM |
438 | \f |
439 | #if defined(NOT43) | |
440 | static int | |
441 | #else /* defined(NOT43) */ | |
442 | static void | |
443 | #endif /* defined(NOT43) */ | |
444 | FastScreen() | |
445 | { | |
335e9f60 | 446 | #if defined(MSDOS) |
d4c3b068 | 447 | #define SaveCorner 0 |
335e9f60 | 448 | #else /* defined(MSDOS) */ |
d4c3b068 | 449 | #define SaveCorner 1 |
335e9f60 | 450 | #endif /* defined(MSDOS) */ |
d4c3b068 GM |
451 | |
452 | #define DoAttribute(a) if (IsHighlightedAttr(a)) { \ | |
453 | standout(); \ | |
454 | } else { \ | |
455 | standend(); \ | |
456 | } \ | |
457 | if (IsNonDisplayAttr(a)) { \ | |
458 | a = 0; /* zero == don't display */ \ | |
459 | } \ | |
460 | if (!FormattedScreen()) { \ | |
461 | a = 1; /* one ==> do display on unformatted */\ | |
462 | } | |
463 | ScreenImage *p, *upper; | |
464 | int fieldattr; /* spends most of its time == 0 or 1 */ | |
465 | ||
466 | /* OK. We want to do this a quickly as possible. So, we assume we | |
467 | * only need to go from Lowest to Highest. However, if we find a | |
468 | * field in the middle, we do the whole screen. | |
469 | * | |
470 | * In particular, we separate out the two cases from the beginning. | |
471 | */ | |
472 | if ((Highest != HighestScreen()) || (Lowest != LowestScreen())) { | |
473 | register int columnsleft; | |
474 | ||
475 | move(ScreenLine(Lowest), ScreenLineOffset(Lowest)); | |
476 | p = &Host[Lowest]; | |
335e9f60 | 477 | #if !defined(MSDOS) |
d4c3b068 GM |
478 | if (Highest == HighestScreen()) { |
479 | Highest = ScreenDec(Highest); | |
480 | } | |
335e9f60 | 481 | #endif /* !defined(MSDOS) */ |
d4c3b068 GM |
482 | upper = &Host[Highest]; |
483 | fieldattr = FieldAttributes(Lowest); | |
484 | DoAttribute(fieldattr); /* Set standout, non-display status */ | |
485 | columnsleft = NumberColumns-ScreenLineOffset(p-Host); | |
486 | ||
487 | while (p <= upper) { | |
a06dcafb | 488 | if (IsStartFieldPointer(p)) { /* New field? */ |
d4c3b068 GM |
489 | Highest = HighestScreen(); |
490 | Lowest = LowestScreen(); | |
491 | FastScreen(); /* Recurse */ | |
492 | return; | |
493 | } else if (fieldattr) { /* Should we display? */ | |
f3fad2d3 GM |
494 | /* Display translated data */ |
495 | addch(disp_asc[GetTerminalPointer(p)]); | |
d4c3b068 GM |
496 | } else { |
497 | addch(' '); /* Display a blank */ | |
498 | } | |
499 | /* If the physical screen is larger than what we | |
500 | * are using, we need to make sure that each line | |
501 | * starts at the beginning of the line. Otherwise, | |
502 | * we will just string all the lines together. | |
503 | */ | |
504 | p++; | |
505 | if (--columnsleft == 0) { | |
506 | int i = p-Host; | |
507 | ||
508 | move(ScreenLine(i), 0); | |
509 | columnsleft = NumberColumns; | |
510 | } | |
511 | } | |
512 | } else { /* Going from Lowest to Highest */ | |
513 | unsigned char tmpbuf[MAXNUMBERCOLUMNS+1]; | |
514 | ScreenImage *End = &Host[ScreenSize]-1-SaveCorner; | |
515 | register unsigned char *tmp = tmpbuf, *tmpend = tmpbuf+NumberColumns; | |
516 | ||
517 | *tmpend = 0; /* terminate from the beginning */ | |
518 | move(0,0); | |
519 | p = Host; | |
520 | fieldattr = FieldAttributes(LowestScreen()); | |
521 | DoAttribute(fieldattr); /* Set standout, non-display status */ | |
522 | ||
523 | while (p <= End) { | |
a06dcafb | 524 | if (IsStartFieldPointer(p)) { /* New field? */ |
d4c3b068 GM |
525 | if (tmp != tmpbuf) { |
526 | *tmp++ = 0; /* close out */ | |
527 | addstr(tmpbuf); | |
528 | tmp = tmpbuf; | |
529 | tmpend = tmpbuf + NumberColumns - ScreenLineOffset(p-Host); | |
530 | } | |
a06dcafb | 531 | fieldattr = FieldAttributesPointer(p); /* Get attributes */ |
d4c3b068 GM |
532 | DoAttribute(fieldattr); /* Set standout, non-display */ |
533 | *tmp++ = ' '; | |
534 | } else { | |
535 | if (fieldattr) { /* Should we display? */ | |
536 | /* Display translated data */ | |
f3fad2d3 | 537 | *tmp++ = disp_asc[GetTerminalPointer(p)]; |
d4c3b068 GM |
538 | } else { |
539 | *tmp++ = ' '; | |
540 | } | |
541 | } | |
542 | /* If the physical screen is larger than what we | |
543 | * are using, we need to make sure that each line | |
544 | * starts at the beginning of the line. Otherwise, | |
545 | * we will just string all the lines together. | |
546 | */ | |
547 | p++; | |
548 | if (tmp == tmpend) { | |
549 | int i = p-Host; /* Be sure the "p++" happened first! */ | |
550 | ||
551 | *tmp++ = 0; | |
552 | addstr(tmpbuf); | |
553 | tmp = tmpbuf; | |
554 | move(ScreenLine(i), 0); | |
555 | tmpend = tmpbuf + NumberColumns; | |
556 | } | |
557 | } | |
558 | if (tmp != tmpbuf) { | |
559 | *tmp++ = 0; | |
560 | addstr(tmpbuf); | |
561 | tmp = tmpbuf; | |
562 | } | |
563 | } | |
564 | Lowest = HighestScreen()+1; | |
565 | Highest = LowestScreen()-1; | |
566 | terminalCursorAddress = CorrectTerminalCursor(); | |
567 | if (ERR == move(ScreenLine(terminalCursorAddress), | |
568 | ScreenLineOffset(terminalCursorAddress))) { | |
569 | GoAway("move", terminalCursorAddress); | |
570 | } | |
571 | DoARefresh(); | |
572 | if (needToRing) { | |
573 | StringToTerminal(bellSequence); | |
574 | needToRing = 0; | |
575 | } | |
576 | EmptyTerminal(); /* move data along */ | |
577 | return; | |
578 | } | |
579 | ||
580 | ||
581 | /* TryToSend - send data out to user's terminal */ | |
582 | ||
583 | #if defined(NOT43) | |
584 | int | |
585 | #else /* defined(NOT43) */ | |
586 | void | |
587 | #endif /* defined(NOT43) */ | |
588 | (*TryToSend)() = FastScreen; | |
589 | \f | |
4b3aebcc GM |
590 | void |
591 | ScreenOIA(oia) | |
592 | OIA *oia; | |
593 | { | |
594 | } | |
595 | ||
596 | ||
7e6a2e47 | 597 | /* InitTerminal - called to initialize the screen, etc. */ |
d4c3b068 GM |
598 | |
599 | void | |
7e6a2e47 | 600 | InitTerminal() |
d4c3b068 GM |
601 | { |
602 | #if defined(unix) | |
603 | struct sgttyb ourttyb; | |
604 | static int speeds[] = { 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, | |
605 | 2400, 4800, 9600 }; | |
606 | #endif | |
607 | ||
7e6a2e47 | 608 | InitMapping(); /* Go do mapping file (MAP3270) first */ |
d4c3b068 GM |
609 | if (!screenInitd) { /* not initialized */ |
610 | #if defined(unix) | |
611 | char KSEbuffer[2050]; | |
612 | char *lotsofspace = KSEbuffer; | |
613 | extern int abort(); | |
614 | extern char *tgetstr(); | |
615 | #endif /* defined(unix) */ | |
616 | ||
335e9f60 | 617 | ClearArray(Terminal); |
7e6a2e47 | 618 | terminalCursorAddress = SetBufferAddress(0,0); |
d4c3b068 GM |
619 | #if defined(unix) |
620 | signal(SIGHUP, abort); | |
621 | #endif | |
622 | ||
623 | TryToSend = FastScreen; | |
134faf51 | 624 | #if defined(unix) |
d4c3b068 GM |
625 | ioctl(1, TIOCGETP, (char *) &ourttyb); |
626 | if ((ourttyb.sg_ospeed < 0) || (ourttyb.sg_ospeed > B9600)) { | |
627 | max_changes_before_poll = 1920; | |
628 | } else { | |
629 | max_changes_before_poll = speeds[ourttyb.sg_ospeed]/10; | |
630 | if (max_changes_before_poll < 40) { | |
631 | max_changes_before_poll = 40; | |
632 | } | |
633 | TryToSend = SlowScreen; | |
634 | HaveInput = 1; /* get signals going */ | |
635 | } | |
134faf51 | 636 | #endif /* defined(unix) */ |
d4c3b068 GM |
637 | setcommandmode(); |
638 | /* | |
639 | * By now, initscr() (in curses) has been called (from telnet.c), | |
640 | * and the screen has been initialized. | |
641 | */ | |
642 | #if defined(unix) | |
643 | nonl(); | |
644 | /* the problem is that curses catches SIGTSTP to | |
645 | * be nice, but it messes us up. | |
646 | */ | |
647 | signal(SIGTSTP, SIG_DFL); | |
648 | if ((KS = tgetstr("ks", &lotsofspace)) != 0) { | |
649 | KS = strsave(KS); | |
650 | StringToTerminal(KS); | |
651 | } | |
652 | if ((KE = tgetstr("ke", &lotsofspace)) != 0) { | |
653 | KE = strsave(KE); | |
654 | } | |
655 | if (tgetstr("md", &lotsofspace) && tgetstr("me", &lotsofspace)) { | |
656 | SO = strsave(tgetstr("md", &lotsofspace)); | |
657 | SE = strsave(tgetstr("me", &lotsofspace)); | |
658 | } | |
659 | #endif | |
660 | DoARefresh(); | |
661 | setconnmode(); | |
662 | if (VB && *VB) { | |
663 | bellSequence = VB; /* use visual bell */ | |
664 | } | |
665 | screenInitd = 1; | |
666 | screenStopped = 0; /* Not stopped */ | |
667 | } | |
668 | } | |
669 | ||
670 | ||
671 | /* StopScreen - called when we are going away... */ | |
672 | ||
673 | void | |
674 | StopScreen(doNewLine) | |
675 | int doNewLine; | |
676 | { | |
677 | if (screenInitd && !screenStopped) { | |
678 | move(NumberLines-1, 1); | |
679 | standend(); | |
d4c3b068 | 680 | inHighlightMode = 0; |
d4c3b068 GM |
681 | DoARefresh(); |
682 | setcommandmode(); | |
683 | endwin(); | |
684 | setconnmode(); | |
685 | #if defined(unix) | |
686 | if (KE) { | |
687 | StringToTerminal(KE); | |
688 | } | |
689 | #endif /* defined(unix) */ | |
690 | if (doNewLine) { | |
691 | StringToTerminal("\r\n"); | |
692 | } | |
693 | EmptyTerminal(); | |
694 | screenStopped = 1; /* This is stopped */ | |
695 | } | |
696 | } | |
697 | ||
698 | ||
699 | /* RefreshScreen - called to cause the screen to be refreshed */ | |
700 | ||
701 | void | |
702 | RefreshScreen() | |
703 | { | |
704 | clearok(curscr, TRUE); | |
705 | (*TryToSend)(); | |
706 | } | |
707 | ||
708 | ||
709 | /* ConnectScreen - called to reconnect to the screen */ | |
710 | ||
711 | void | |
712 | ConnectScreen() | |
713 | { | |
714 | if (screenInitd) { | |
715 | #if defined(unix) | |
716 | if (KS) { | |
717 | StringToTerminal(KS); | |
718 | } | |
719 | #endif /* defined(unix) */ | |
720 | RefreshScreen(); | |
721 | (*TryToSend)(); | |
722 | screenStopped = 0; | |
723 | } | |
724 | } | |
725 | ||
726 | /* LocalClearScreen() - clear the whole ball of wax, cheaply */ | |
727 | ||
728 | void | |
729 | LocalClearScreen() | |
730 | { | |
731 | outputPurge(); /* flush all data to terminal */ | |
732 | clear(); /* clear in curses */ | |
335e9f60 | 733 | ClearArray(Terminal); |
d4c3b068 GM |
734 | Clear3270(); |
735 | Lowest = HighestScreen()+1; /* everything in sync... */ | |
736 | Highest = LowestScreen()+1; | |
737 | } | |
738 | ||
739 | ||
740 | void | |
741 | BellOff() | |
742 | { | |
743 | if (bellwinup) { | |
744 | delwin(bellwin); | |
745 | bellwin = 0; | |
746 | bellwinup = 0; | |
d4c3b068 GM |
747 | touchwin(stdscr); |
748 | DoARefresh(); | |
749 | } | |
750 | } | |
751 | ||
752 | ||
753 | void | |
754 | RingBell(s) | |
755 | char *s; | |
756 | { | |
757 | needToRing = 1; | |
758 | if (s) { | |
759 | int len = strlen(s); | |
760 | ||
761 | if (len > COLS-2) { | |
762 | len = COLS-2; | |
763 | } | |
764 | if ((bellwin = newwin(3, len+2, LINES/2, 0)) == NULL) { | |
765 | OurExitString(stderr, "Error from newwin in RingBell", 1); | |
766 | } | |
767 | werase(bellwin); | |
768 | wstandout(bellwin); | |
769 | box(bellwin, '|', '-'); | |
770 | if (wmove(bellwin, 1, 1) == ERR) { | |
771 | OurExitString(stderr, "Error from wmove in RingBell", 1); | |
772 | } | |
773 | while (len--) { | |
774 | if (waddch(bellwin, *s++) == ERR) { | |
775 | OurExitString(stderr, "Error from waddch in RingBell", 1); | |
776 | } | |
777 | } | |
778 | wstandend(bellwin); | |
779 | if (wrefresh(bellwin) == ERR) { | |
780 | OurExitString(stderr, "Error from wrefresh in RingBell", 1); | |
781 | } | |
782 | bellwinup = 1; | |
783 | } | |
784 | } | |
785 | \f | |
786 | ||
787 | /* returns a 1 if no more output available (so, go ahead and block), | |
788 | or a 0 if there is more output available (so, just poll the other | |
789 | sources/destinations, don't block). | |
790 | */ | |
791 | ||
792 | int | |
793 | DoTerminalOutput() | |
794 | { | |
795 | /* called just before a select to conserve IO to terminal */ | |
309354e8 | 796 | if (!(screenInitd||screenStopped)) { |
f7aa2cfa GM |
797 | return 1; /* No output if not initialized */ |
798 | } | |
799 | if ((Lowest <= Highest) || needToRing || | |
800 | (terminalCursorAddress != CorrectTerminalCursor())) { | |
d4c3b068 GM |
801 | (*TryToSend)(); |
802 | } | |
803 | if (Lowest > Highest) { | |
f7aa2cfa | 804 | return 1; /* no more output now */ |
d4c3b068 | 805 | } else { |
f7aa2cfa | 806 | return 0; /* more output for future */ |
d4c3b068 GM |
807 | } |
808 | } | |
7e74e688 GM |
809 | \f |
810 | /* | |
811 | * The following are defined to handle transparent data. | |
812 | */ | |
813 | ||
814 | void | |
815 | TransStop() | |
816 | { | |
817 | #if defined(unix) | |
818 | if (tcflag == 0) { | |
819 | tcflag = -1; | |
820 | (void) signal(SIGCHLD, SIG_DFL); | |
821 | } else if (tcflag > 0) { | |
822 | setcommandmode(); | |
823 | (void) close(tin); | |
824 | (void) close(tout); | |
825 | tin = savefd[0]; | |
826 | tout = savefd[1]; | |
827 | setconnmode(); | |
828 | tcflag = -1; | |
829 | (void) signal(SIGCHLD, SIG_DFL); | |
830 | } | |
831 | #endif /* defined(unix) */ | |
832 | RefreshScreen(); | |
833 | } | |
834 | ||
835 | void | |
c4298cc1 | 836 | TransOut(buffer, count, kind, control) |
7e74e688 GM |
837 | unsigned char *buffer; |
838 | int count; | |
c4298cc1 GM |
839 | int kind; /* 0 or 5 */ |
840 | int control; /* To see if we are done */ | |
7e74e688 GM |
841 | { |
842 | #if defined(unix) | |
843 | extern char *transcom; | |
844 | int inpipefd[2], outpipefd[2], savemode; | |
845 | void aborttc(); | |
846 | #endif /* defined(unix) */ | |
847 | ||
848 | while (DoTerminalOutput() == 0) { | |
849 | #if defined(unix) | |
850 | HaveInput = 0; | |
851 | #endif /* defined(unix) */ | |
852 | } | |
853 | #if defined(unix) | |
854 | if (transcom && tcflag == -1) { | |
855 | while (1) { /* go thru once */ | |
856 | if (pipe(outpipefd) < 0) { | |
857 | break; | |
858 | } | |
859 | if (pipe(inpipefd) < 0) { | |
860 | break; | |
861 | } | |
862 | if ((tcflag = fork()) == 0) { | |
863 | (void) close(outpipefd[1]); | |
864 | (void) close(0); | |
865 | if (dup(outpipefd[0]) < 0) { | |
866 | exit(1); | |
867 | } | |
868 | (void) close(outpipefd[0]); | |
869 | (void) close(inpipefd[0]); | |
870 | (void) close(1); | |
871 | if (dup(inpipefd[1]) < 0) { | |
872 | exit(1); | |
873 | } | |
874 | (void) close(inpipefd[1]); | |
875 | if (execl("/bin/csh", "csh", "-c", transcom, (char *) 0)) { | |
876 | exit(1); | |
877 | } | |
878 | } | |
879 | (void) close(inpipefd[1]); | |
880 | (void) close(outpipefd[0]); | |
881 | savefd[0] = tin; | |
882 | savefd[1] = tout; | |
883 | setcommandmode(); | |
884 | tin = inpipefd[0]; | |
885 | tout = outpipefd[1]; | |
886 | (void) signal(SIGCHLD, aborttc); | |
887 | setconnmode(); | |
888 | tcflag = 1; | |
889 | break; | |
890 | } | |
891 | if (tcflag < 1) { | |
892 | tcflag = 0; | |
893 | } | |
894 | } | |
895 | #endif /* defined(unix) */ | |
896 | (void) DataToTerminal(buffer, count); | |
c4298cc1 GM |
897 | if (control && (kind == 0)) { /* Send in AID byte */ |
898 | SendToIBM(); | |
899 | } else { | |
900 | TransInput(1, kind); /* Go get some data */ | |
901 | } | |
7e74e688 GM |
902 | } |
903 | ||
904 | ||
905 | #if defined(unix) | |
906 | static void | |
907 | aborttc() | |
908 | { | |
909 | int savemode; | |
910 | ||
911 | setcommandmode(); | |
912 | (void) close(tin); | |
913 | (void) close(tout); | |
914 | tin = savefd[0]; | |
915 | tout = savefd[1]; | |
916 | setconnmode(); | |
917 | tcflag = 0; | |
918 | } | |
919 | #endif /* defined(unix) */ |