Commit | Line | Data |
---|---|---|
3d8b96ab 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 | ||
f6a34a60 GM |
27 | #include <stdio.h> |
28 | ||
96a643fe | 29 | #include "../general/general.h" |
f6a34a60 | 30 | |
3d8b96ab | 31 | #include "hostctlr.h" |
92f7501a | 32 | #include "oia.h" |
3d8b96ab | 33 | #include "screen.h" |
502a6e6e | 34 | #include "../apilib/ebc_disp.h" |
3d8b96ab | 35 | |
96a643fe | 36 | #include "../general/globals.h" |
3d8b96ab GM |
37 | #include "options.ext" |
38 | #include "../telnet.ext" | |
39 | #include "inbound.ext" | |
40 | #include "outbound.ext" | |
96a643fe | 41 | #include "../general/bsubs.ext" |
3d8b96ab GM |
42 | |
43 | #define SetHighestLowest(position) { \ | |
44 | if (position < Lowest) { \ | |
45 | Lowest = position; \ | |
46 | } \ | |
47 | if (position > Highest) { \ | |
48 | Highest = position; \ | |
49 | } \ | |
50 | } | |
51 | ||
3d8b96ab | 52 | |
25dbbecd GM |
53 | static int LastWasTerminated = 1; /* was "control" = 1 last time? */ |
54 | ||
3d8b96ab GM |
55 | /* some globals */ |
56 | ||
44d721ab | 57 | #if !defined(PURE3274) |
25dbbecd GM |
58 | int OutputClock; /* what time it is */ |
59 | int TransparentClock; /* time we were last in transparent */ | |
44d721ab | 60 | #endif /* !defined(PURE3274) */ |
3d8b96ab GM |
61 | |
62 | char CIABuffer[64] = { | |
63 | 0x40, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, | |
64 | 0xc8, 0xc9, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, | |
65 | 0x50, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, | |
66 | 0xd8, 0xd9, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, | |
67 | 0x60, 0x61, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, | |
68 | 0xe8, 0xe9, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, | |
69 | 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, | |
70 | 0xf8, 0xf9, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f | |
71 | }; | |
f6a34a60 GM |
72 | |
73 | static struct orders_def orders_def[] = ORDERS_DEF; | |
3d8b96ab | 74 | \f |
25dbbecd | 75 | /* |
8814d2c1 | 76 | * init_ctlr() |
25dbbecd GM |
77 | * |
78 | * Initialize all data from the 'data' portion to their startup values. | |
79 | */ | |
80 | ||
81 | void | |
8814d2c1 | 82 | init_ctlr() |
25dbbecd GM |
83 | { |
84 | LastWasTerminated = 1; | |
8814d2c1 GM |
85 | #if !defined(PURE3274) |
86 | OutputClock = TransparentClock = 0; | |
87 | #endif /* !defined(PURE3274) */ | |
88 | init_inbound(); | |
92f7501a | 89 | init_oia(); |
25dbbecd GM |
90 | } |
91 | ||
3d8b96ab | 92 | |
eb8f58d6 GM |
93 | FieldInc(position) |
94 | register int position; /* Position in previous field */ | |
3d8b96ab | 95 | { |
eb8f58d6 GM |
96 | register ScreenImage *ptr; |
97 | ||
98 | ptr = (ScreenImage *)memNSchr((char *)Host+position+1, ATTR_MASK, | |
99 | HighestScreen()-position, ATTR_MASK, sizeof Host[0]); | |
100 | if (ptr == 0) { | |
101 | ptr = (ScreenImage *)memNSchr((char *)Host+LowestScreen(), ATTR_MASK, | |
102 | position-LowestScreen(), ATTR_MASK, sizeof Host[0]); | |
103 | if (ptr == 0) { | |
104 | return LowestScreen(); | |
105 | } | |
3d8b96ab | 106 | } |
eb8f58d6 GM |
107 | return ptr-Host; |
108 | } | |
109 | ||
110 | FieldDec(position) | |
111 | int position; | |
112 | { | |
113 | register ScreenImage *ptr; | |
114 | ||
115 | ptr = (ScreenImage *)memNSchr((char *)(Host+position)-1, ATTR_MASK, | |
116 | position-LowestScreen(), ATTR_MASK, -sizeof Host[0]); | |
117 | if (ptr == 0) { | |
118 | ptr = (ScreenImage *)memNSchr((char *)Host+HighestScreen(), ATTR_MASK, | |
119 | HighestScreen()-position, ATTR_MASK, -sizeof Host[0]); | |
120 | if (ptr == 0) { | |
f3bb1d07 | 121 | return LowestScreen(); |
eb8f58d6 | 122 | } |
3d8b96ab | 123 | } |
eb8f58d6 | 124 | return ptr-Host; |
3d8b96ab GM |
125 | } |
126 | ||
127 | /* Clear3270 - called to clear the screen */ | |
128 | ||
129 | void | |
130 | Clear3270() | |
131 | { | |
fa5e61e0 | 132 | ClearArray(Host); |
3d8b96ab GM |
133 | DeleteAllFields(); /* get rid of all fields */ |
134 | BufferAddress = SetBufferAddress(0,0); | |
135 | CursorAddress = SetBufferAddress(0,0); | |
136 | Lowest = LowestScreen(); | |
137 | Highest = HighestScreen(); | |
138 | } | |
139 | \f | |
140 | /* AddHost - called to add a character to the buffer. | |
141 | * We use a macro in this module, since we call it so | |
142 | * often from loops. | |
143 | * | |
144 | * NOTE: It is a macro, so don't go around using AddHost(p, *c++), or | |
145 | * anything similar. (I don't define any temporary variables, again | |
146 | * just for the speed.) | |
147 | */ | |
148 | void | |
149 | AddHost(position, character) | |
150 | int position; | |
151 | char character; | |
152 | { | |
3d8b96ab GM |
153 | # define AddHostA(p,c) \ |
154 | { \ | |
155 | if (IsStartField(p)) { \ | |
156 | DeleteField(p); \ | |
157 | Highest = HighestScreen(); \ | |
158 | Lowest = LowestScreen(); \ | |
159 | SetHighestLowest(p); \ | |
160 | } \ | |
161 | SetHost(p, c); \ | |
162 | } | |
163 | # define AddHost(p,c) \ | |
164 | { \ | |
165 | if (c != GetHost(p)) { \ | |
166 | SetHighestLowest(p); \ | |
167 | } \ | |
168 | AddHostA(p,c); \ | |
169 | } /* end of macro of AddHost */ | |
3d8b96ab GM |
170 | |
171 | AddHost(position, character); | |
172 | } | |
173 | \f | |
174 | /* returns the number of characters consumed */ | |
175 | int | |
176 | DataFromNetwork(buffer, count, control) | |
177 | register unsigned char *buffer; /* what the data is */ | |
178 | register int count; /* and how much there is */ | |
179 | int control; /* this buffer ended block? */ | |
180 | { | |
181 | int origCount; | |
182 | register int c; | |
183 | register int i; | |
184 | static int Command; | |
185 | static int Wcc; | |
3d8b96ab GM |
186 | |
187 | origCount = count; | |
188 | ||
189 | if (LastWasTerminated) { | |
190 | ||
191 | if (count < 2) { | |
192 | if (count == 0) { | |
f6a34a60 | 193 | ExitString(stderr, "Short count received from host!\n", 1); |
3d8b96ab GM |
194 | return(count); |
195 | } | |
196 | Command = buffer[0]; | |
197 | switch (Command) { /* This had better be a read command */ | |
198 | case CMD_READ_MODIFIED: | |
199 | case CMD_SNA_READ_MODIFIED: | |
200 | case CMD_SNA_READ_MODIFIED_ALL: | |
92f7501a GM |
201 | SetOiaOnlineA(&OperatorInformationArea); |
202 | SetOiaModified(); | |
3d8b96ab GM |
203 | DoReadModified(Command); |
204 | break; | |
205 | case CMD_READ_BUFFER: | |
206 | case CMD_SNA_READ_BUFFER: | |
92f7501a GM |
207 | SetOiaOnlineA(&OperatorInformationArea); |
208 | SetOiaModified(); | |
3d8b96ab GM |
209 | DoReadBuffer(); |
210 | break; | |
211 | default: | |
fa5e61e0 GM |
212 | { |
213 | char buffer[100]; | |
214 | ||
215 | sprintf(buffer, | |
216 | "Unexpected read command code 0x%x received.\n", | |
217 | Command); | |
218 | ExitString(stderr, buffer, 1); | |
219 | break; | |
220 | } | |
3d8b96ab GM |
221 | } |
222 | return(1); /* We consumed everything */ | |
223 | } | |
224 | Command = buffer[0]; | |
225 | Wcc = buffer[1]; | |
226 | if (Wcc & WCC_RESET_MDT) { | |
227 | i = c = WhereAttrByte(LowestScreen()); | |
228 | do { | |
229 | if (HasMdt(i)) { | |
230 | TurnOffMdt(i); | |
231 | } | |
232 | i = FieldInc(i); | |
233 | } while (i != c); | |
234 | } | |
235 | ||
236 | switch (Command) { | |
237 | case CMD_ERASE_WRITE: | |
238 | case CMD_ERASE_WRITE_ALTERNATE: | |
239 | case CMD_SNA_ERASE_WRITE: | |
240 | case CMD_SNA_ERASE_WRITE_ALTERNATE: | |
241 | { | |
242 | int newlines, newcolumns; | |
243 | ||
92f7501a GM |
244 | SetOiaOnlineA(&OperatorInformationArea); |
245 | ResetOiaTWait(&OperatorInformationArea); | |
246 | SetOiaModified(); | |
3d8b96ab GM |
247 | if ((Command == CMD_ERASE_WRITE) |
248 | || (Command == CMD_SNA_ERASE_WRITE)) { | |
249 | newlines = 24; | |
250 | newcolumns = 80; | |
251 | } else { | |
252 | newlines = MaxNumberLines; | |
253 | newcolumns = MaxNumberColumns; | |
254 | } | |
255 | if ((newlines != NumberLines) | |
256 | || (newcolumns != NumberColumns)) { | |
257 | /* | |
258 | * The LocalClearScreen() is really for when we | |
259 | * are going from a larger screen to a smaller | |
260 | * screen, and we need to clear off the stuff | |
261 | * at the end of the lines, or the lines at | |
262 | * the end of the screen. | |
263 | */ | |
264 | LocalClearScreen(); | |
265 | NumberLines = newlines; | |
266 | NumberColumns = newcolumns; | |
267 | ScreenSize = NumberLines * NumberColumns; | |
268 | } | |
269 | Clear3270(); | |
44d721ab | 270 | #if !defined(PURE3274) |
3d8b96ab | 271 | if (TransparentClock == OutputClock) { |
15fd51e0 | 272 | TransStop(); |
3d8b96ab | 273 | } |
44d721ab | 274 | #endif /* !defined(PURE3274) */ |
3d8b96ab GM |
275 | break; |
276 | } | |
277 | ||
278 | case CMD_ERASE_ALL_UNPROTECTED: | |
279 | case CMD_SNA_ERASE_ALL_UNPROTECTED: | |
92f7501a GM |
280 | SetOiaOnlineA(&OperatorInformationArea); |
281 | ResetOiaTWait(&OperatorInformationArea); | |
282 | SetOiaModified(); | |
3d8b96ab GM |
283 | CursorAddress = HighestScreen()+1; |
284 | for (i = LowestScreen(); i <= HighestScreen(); i = ScreenInc(i)) { | |
285 | if (IsUnProtected(i)) { | |
286 | if (CursorAddress > i) { | |
287 | CursorAddress = i; | |
288 | } | |
289 | AddHost(i, '\0'); | |
290 | } | |
291 | if (HasMdt(i)) { | |
292 | TurnOffMdt(i); | |
293 | } | |
294 | } | |
295 | if (CursorAddress == HighestScreen()+1) { | |
296 | CursorAddress = SetBufferAddress(0,0); | |
297 | } | |
298 | UnLocked = 1; | |
299 | AidByte = 0; | |
92f7501a GM |
300 | ResetOiaSystemLocked(&OperatorInformationArea); |
301 | SetOiaModified(); | |
fb3d968e | 302 | TerminalIn(); |
3d8b96ab GM |
303 | break; |
304 | case CMD_WRITE: | |
305 | case CMD_SNA_WRITE: | |
92f7501a GM |
306 | SetOiaOnlineA(&OperatorInformationArea); |
307 | ResetOiaTWait(&OperatorInformationArea); | |
308 | SetOiaModified(); | |
3d8b96ab GM |
309 | break; |
310 | default: | |
311 | { | |
312 | char buffer[100]; | |
313 | ||
fa5e61e0 GM |
314 | sprintf(buffer, |
315 | "Unexpected write command code 0x%x received.\n", | |
3d8b96ab | 316 | Command); |
f6a34a60 | 317 | ExitString(stderr, buffer, 1); |
3d8b96ab GM |
318 | break; |
319 | } | |
320 | } | |
321 | ||
322 | count -= 2; /* strip off command and wcc */ | |
323 | buffer += 2; | |
324 | ||
325 | } | |
326 | LastWasTerminated = 0; /* then, reset at end... */ | |
327 | ||
328 | while (count) { | |
329 | count--; | |
330 | c = *buffer++; | |
331 | if (IsOrder(c)) { | |
332 | /* handle an order */ | |
333 | switch (c) { | |
334 | # define Ensure(x) if (count < x) { \ | |
335 | if (!control) { \ | |
336 | return(origCount-(count+1)); \ | |
337 | } else { \ | |
338 | /* XXX - should not occur */ \ | |
339 | count = 0; \ | |
340 | break; \ | |
341 | } \ | |
342 | } | |
343 | case ORDER_SF: | |
344 | Ensure(1); | |
345 | c = *buffer++; | |
346 | count--; | |
347 | if ( ! (IsStartField(BufferAddress) && | |
348 | FieldAttributes(BufferAddress) == c)) { | |
349 | SetHighestLowest(BufferAddress); | |
350 | NewField(BufferAddress,c); | |
351 | } | |
3d8b96ab GM |
352 | BufferAddress = ScreenInc(BufferAddress); |
353 | break; | |
354 | case ORDER_SBA: | |
355 | Ensure(2); | |
356 | i = buffer[0]; | |
357 | c = buffer[1]; | |
44d721ab | 358 | #if !defined(PURE3274) |
3d8b96ab GM |
359 | if (!i && !c) { /* transparent write */ |
360 | if (!control) { | |
361 | return(origCount-(count+1)); | |
362 | } else { | |
15fd51e0 GM |
363 | TransparentClock = OutputClock; /* clock next */ |
364 | TransOut(buffer+2, count-2); /* output */ | |
365 | SendToIBM(); /* ack block */ | |
3d8b96ab GM |
366 | TransparentClock = OutputClock+1; /* clock next */ |
367 | buffer += count; | |
368 | count -= count; | |
369 | } | |
44d721ab | 370 | break; |
3d8b96ab | 371 | } |
44d721ab GM |
372 | #endif /* !defined(PURE3274) */ |
373 | BufferAddress = Addr3270(i, c); | |
374 | buffer += 2; | |
375 | count -= 2; | |
3d8b96ab GM |
376 | break; |
377 | case ORDER_IC: | |
378 | CursorAddress = BufferAddress; | |
379 | break; | |
dff927d4 GM |
380 | /* |
381 | * XXX - PT is supposed to null fill the screen buffer | |
382 | * under certain draconian conditions. | |
383 | */ | |
3d8b96ab | 384 | case ORDER_PT: |
dff927d4 GM |
385 | i = BufferAddress; |
386 | do { | |
3d8b96ab | 387 | if (IsStartField(i)) { |
3d8b96ab GM |
388 | if (!IsProtected(ScreenInc(i))) { |
389 | break; | |
390 | } | |
3d8b96ab | 391 | } |
dff927d4 GM |
392 | i = ScreenInc(i); |
393 | } while (i != HighestScreen()); | |
394 | BufferAddress = ScreenInc(i); | |
3d8b96ab GM |
395 | break; |
396 | case ORDER_RA: | |
397 | Ensure(3); | |
398 | i = Addr3270(buffer[0], buffer[1]); | |
399 | c = buffer[2]; | |
f6a34a60 GM |
400 | if (c == ORDER_GE) { |
401 | Ensure(4); | |
402 | c = buffer[3]; | |
403 | buffer += 4; | |
404 | count -= 4; | |
405 | } else { | |
406 | buffer += 3; | |
407 | count -= 3; | |
408 | } | |
3d8b96ab GM |
409 | do { |
410 | AddHost(BufferAddress, ebc_disp[c]); | |
411 | BufferAddress = ScreenInc(BufferAddress); | |
412 | } while (BufferAddress != i); | |
3d8b96ab GM |
413 | break; |
414 | case ORDER_EUA: /* (from [here,there), ie: half open interval] */ | |
415 | Ensure(2); | |
564518ce GM |
416 | /* |
417 | * Compiler error - msc version 4.0: | |
418 | * "expression too complicated". | |
419 | */ | |
420 | i = WhereAttrByte(BufferAddress); | |
421 | c = FieldAttributes(i); | |
3d8b96ab GM |
422 | for (i = Addr3270(buffer[0], buffer[1]); i != BufferAddress; |
423 | BufferAddress = ScreenInc(BufferAddress)) { | |
dff927d4 GM |
424 | if (IsStartField(BufferAddress)) { |
425 | c = FieldAttributes(BufferAddress); | |
426 | } else if (!IsProtectedAttr(BufferAddress, c)) { | |
3d8b96ab GM |
427 | AddHost(BufferAddress, 0); |
428 | } | |
429 | } | |
430 | buffer += 2; | |
431 | count -= 2; | |
432 | break; | |
f6a34a60 GM |
433 | case ORDER_GE: |
434 | Ensure(2); | |
435 | /* XXX Should do SOMETHING! */ | |
436 | buffer += 0; | |
437 | count -= 0; /* For now, just use this character */ | |
438 | break; | |
3d8b96ab GM |
439 | case ORDER_YALE: /* special YALE defined order */ |
440 | Ensure(2); /* need at least two characters */ | |
441 | if (*buffer == 0x5b) { | |
442 | i = OptOrder(buffer+1, count-1, control); | |
443 | if (i == 0) { | |
444 | return(origCount-(count+1)); /* come here again */ | |
445 | } else { | |
446 | buffer += 1 + i; | |
447 | count -= (1 + i); | |
448 | } | |
449 | } | |
450 | break; | |
451 | default: | |
f6a34a60 GM |
452 | { |
453 | char buffer[100]; | |
454 | static struct orders_def unk_order | |
455 | = { 0, "??", "(unknown)" }; | |
456 | struct orders_def *porder = &unk_order; | |
457 | int i; | |
458 | ||
459 | for (i = 0; i <= highestof(orders_def); i++) { | |
460 | if (orders_def[i].code == c) { | |
461 | porder = &orders_def[i]; | |
462 | break; | |
463 | } | |
464 | } | |
465 | sprintf(buffer, | |
466 | "Unsupported order '%s' (%s, 0x%x) received.\n", | |
467 | porder->long_name, porder->short_name, c); | |
468 | ExitString(stderr, buffer, 1); | |
469 | /*NOTREACHED*/ | |
470 | } | |
3d8b96ab GM |
471 | } |
472 | if (count < 0) { | |
473 | count = 0; | |
474 | } | |
475 | } else { | |
476 | /* Data comes in large clumps - take it all */ | |
477 | i = BufferAddress; | |
3d8b96ab GM |
478 | AddHostA(i, ebc_disp[c]); |
479 | SetHighestLowest(i); | |
3d8b96ab GM |
480 | i = ScreenInc(i); |
481 | c = *buffer; | |
482 | while (count && !IsOrder(c)) { | |
3d8b96ab | 483 | AddHostA(i, ebc_disp[c]); |
3d8b96ab | 484 | i = ScreenInc(i); |
3d8b96ab GM |
485 | if (i == LowestScreen()) { |
486 | SetHighestLowest(HighestScreen()); | |
487 | } | |
3d8b96ab GM |
488 | count--; |
489 | buffer++; | |
490 | c = *buffer; | |
491 | } | |
3d8b96ab | 492 | SetHighestLowest(i); |
3d8b96ab GM |
493 | BufferAddress = i; |
494 | } | |
495 | } | |
496 | if (count == 0) { | |
44d721ab | 497 | #if !defined(PURE3274) |
3d8b96ab | 498 | OutputClock++; /* time rolls on */ |
44d721ab | 499 | #endif /* !defined(PURE3274) */ |
3d8b96ab GM |
500 | if (control) { |
501 | if (Wcc & WCC_RESTORE) { | |
44d721ab | 502 | #if !defined(PURE3274) |
3d8b96ab GM |
503 | if (TransparentClock != OutputClock) { |
504 | AidByte = 0; | |
505 | } | |
44d721ab GM |
506 | #else /* !defined(PURE3274) */ |
507 | AidByte = 0; | |
508 | #endif /* !defined(PURE3274) */ | |
3d8b96ab | 509 | UnLocked = 1; |
92f7501a GM |
510 | ResetOiaSystemLocked(&OperatorInformationArea); |
511 | SetOiaModified(); | |
47e90de8 | 512 | SetPsModified(); |
fb3d968e | 513 | TerminalIn(); |
3d8b96ab GM |
514 | } |
515 | if (Wcc & WCC_ALARM) { | |
516 | RingBell(0); | |
517 | } | |
518 | } | |
519 | LastWasTerminated = control; /* state for next time */ | |
520 | return(origCount); | |
521 | } else { | |
522 | return(origCount-count); | |
523 | } | |
524 | } | |
25dbbecd GM |
525 | |
526 | /* | |
527 | * Init3270() | |
528 | * | |
529 | * Initialize any 3270 (controller) variables to an initial state | |
530 | * in preparation for accepting a connection. | |
531 | */ | |
532 | ||
533 | void | |
534 | Init3270() | |
535 | { | |
f6a34a60 GM |
536 | int i; |
537 | ||
25dbbecd GM |
538 | OptInit(); /* initialize mappings */ |
539 | ||
fa5e61e0 | 540 | ClearArray(Host); |
25dbbecd | 541 | |
fa5e61e0 | 542 | ClearArray(Orders); |
f6a34a60 GM |
543 | for (i = 0; i <= highestof(orders_def); i++) { |
544 | Orders[orders_def[i].code] = 1; | |
545 | } | |
25dbbecd GM |
546 | |
547 | DeleteAllFields(); /* Clear screen */ | |
548 | Lowest = HighestScreen()+1; | |
549 | Highest = LowestScreen()-1; | |
550 | CursorAddress = BufferAddress = SetBufferAddress(0,0); | |
551 | UnLocked = 1; | |
552 | OutputClock = 1; | |
553 | TransparentClock = -1; | |
5a3593bb GM |
554 | SetOiaReady3274(&OperatorInformationArea); |
555 | } | |
556 | ||
557 | ||
558 | void | |
559 | Stop3270() | |
560 | { | |
561 | ResetOiaReady3274(&OperatorInformationArea); | |
25dbbecd | 562 | } |