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1 | /* |
2 | * Copyright (c) 1988 Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms are permitted | |
b36fc510 KB |
6 | * provided that the above copyright notice and this paragraph are |
7 | * duplicated in all such forms and that any documentation, | |
8 | * advertising materials, and other materials related to such | |
9 | * distribution and use acknowledge that the software was developed | |
10 | * by the University of California, Berkeley. The name of the | |
11 | * University may not be used to endorse or promote products derived | |
12 | * from this software without specific prior written permission. | |
13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
15 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
897ce52e KB |
16 | */ |
17 | ||
18 | #ifndef lint | |
32d22a68 | 19 | static char sccsid[] = "@(#)tn3270.c 1.17 (Berkeley) %G%"; |
897ce52e KB |
20 | #endif /* not lint */ |
21 | ||
476b1e3a GM |
22 | #include <sys/types.h> |
23 | #include <arpa/telnet.h> | |
24 | ||
2dde2af0 GM |
25 | #include "general.h" |
26 | ||
476b1e3a GM |
27 | #include "defines.h" |
28 | #include "ring.h" | |
29 | #include "externs.h" | |
807a3a7d GM |
30 | #include "fdset.h" |
31 | ||
b6a8714b | 32 | #if defined(TN3270) |
b6a8714b | 33 | |
476b1e3a GM |
34 | #include "../ctlr/screen.h" |
35 | #include "../general/globals.h" | |
b6a8714b | 36 | |
0ea35455 GM |
37 | #include "../telextrn.h" |
38 | #include "../ctlr/externs.h" | |
39 | ||
476b1e3a | 40 | #if defined(unix) |
4127eb64 GM |
41 | int |
42 | HaveInput, /* There is input available to scan */ | |
43 | sigiocount; /* Number of times we got a SIGIO */ | |
44 | ||
476b1e3a GM |
45 | char tline[200]; |
46 | char *transcom = 0; /* transparent mode command (default: none) */ | |
47 | #endif /* defined(unix) */ | |
b307f09e | 48 | |
476b1e3a | 49 | char Ibuf[8*BUFSIZ], *Ifrontp, *Ibackp; |
b307f09e GM |
50 | |
51 | static char sb_terminal[] = { IAC, SB, | |
52 | TELOPT_TTYPE, TELQUAL_IS, | |
53 | 'I', 'B', 'M', '-', '3', '2', '7', '8', '-', '2', | |
54 | IAC, SE }; | |
55 | #define SBTERMMODEL 13 | |
56 | ||
57 | static int | |
58 | Sent3270TerminalType; /* Have we said we are a 3270? */ | |
59 | ||
476b1e3a | 60 | #endif /* defined(TN3270) */ |
b307f09e | 61 | |
e571aa72 | 62 | |
476b1e3a | 63 | void |
66c4b72a | 64 | init_3270() |
476b1e3a GM |
65 | { |
66 | #if defined(TN3270) | |
4127eb64 GM |
67 | #if defined(unix) |
68 | HaveInput = 0; | |
69 | sigiocount = 0; | |
70 | #endif /* defined(unix) */ | |
476b1e3a GM |
71 | Sent3270TerminalType = 0; |
72 | Ifrontp = Ibackp = Ibuf; | |
73 | init_ctlr(); /* Initialize some things */ | |
74 | init_keyboard(); | |
75 | init_screen(); | |
76 | init_system(); | |
77 | #endif /* defined(TN3270) */ | |
e571aa72 | 78 | } |
476b1e3a GM |
79 | |
80 | \f | |
81 | #if defined(TN3270) | |
e571aa72 | 82 | |
b6a8714b GM |
83 | /* |
84 | * DataToNetwork - queue up some data to go to network. If "done" is set, | |
85 | * then when last byte is queued, we add on an IAC EOR sequence (so, | |
86 | * don't call us with "done" until you want that done...) | |
87 | * | |
88 | * We actually do send all the data to the network buffer, since our | |
89 | * only client needs for us to do that. | |
90 | */ | |
91 | ||
92 | int | |
93 | DataToNetwork(buffer, count, done) | |
94 | register char *buffer; /* where the data is */ | |
95 | register int count; /* how much to send */ | |
96 | int done; /* is this the last of a logical block */ | |
97 | { | |
476b1e3a | 98 | register int loop, c; |
b6a8714b | 99 | int origCount; |
b6a8714b GM |
100 | |
101 | origCount = count; | |
b6a8714b GM |
102 | |
103 | while (count) { | |
66c4b72a | 104 | /* If not enough room for EORs, IACs, etc., wait */ |
476b1e3a GM |
105 | if (NETROOM() < 6) { |
106 | fd_set o; | |
107 | ||
108 | FD_ZERO(&o); | |
b6a8714b | 109 | netflush(); |
476b1e3a | 110 | while (NETROOM() < 6) { |
b6a8714b GM |
111 | FD_SET(net, &o); |
112 | (void) select(net+1, (fd_set *) 0, &o, (fd_set *) 0, | |
113 | (struct timeval *) 0); | |
114 | netflush(); | |
115 | } | |
116 | } | |
66c4b72a GM |
117 | c = ring_empty_count(&netoring); |
118 | if (c > count) { | |
119 | c = count; | |
120 | } | |
121 | loop = c; | |
476b1e3a | 122 | while (loop) { |
5dc973da | 123 | if (((unsigned char)*buffer) == IAC) { |
476b1e3a GM |
124 | break; |
125 | } | |
126 | buffer++; | |
127 | loop--; | |
128 | } | |
129 | if ((c = c-loop)) { | |
130 | ring_supply_data(&netoring, buffer-c, c); | |
131 | count -= c; | |
132 | } | |
133 | if (loop) { | |
134 | NET2ADD(IAC, IAC); | |
135 | count--; | |
66c4b72a | 136 | buffer++; |
b6a8714b GM |
137 | } |
138 | } | |
139 | ||
476b1e3a | 140 | if (done) { |
66c4b72a | 141 | NET2ADD(IAC, EOR); |
b6a8714b GM |
142 | netflush(); /* try to move along as quickly as ... */ |
143 | } | |
144 | return(origCount - count); | |
145 | } | |
146 | ||
147 | ||
148 | #if defined(unix) | |
476b1e3a | 149 | void |
b6a8714b GM |
150 | inputAvailable() |
151 | { | |
152 | HaveInput = 1; | |
4127eb64 | 153 | sigiocount++; |
b6a8714b GM |
154 | } |
155 | #endif /* defined(unix) */ | |
156 | ||
157 | void | |
158 | outputPurge() | |
159 | { | |
d732be39 | 160 | ttyflush(1); |
b6a8714b GM |
161 | } |
162 | ||
163 | ||
164 | /* | |
165 | * The following routines are places where the various tn3270 | |
166 | * routines make calls into telnet.c. | |
167 | */ | |
168 | ||
66c4b72a GM |
169 | /* |
170 | * DataToTerminal - queue up some data to go to terminal. | |
171 | * | |
172 | * Note: there are people who call us and depend on our processing | |
173 | * *all* the data at one time (thus the select). | |
174 | */ | |
b6a8714b GM |
175 | |
176 | int | |
177 | DataToTerminal(buffer, count) | |
178 | register char *buffer; /* where the data is */ | |
179 | register int count; /* how much to send */ | |
180 | { | |
0ea35455 | 181 | register int c; |
b6a8714b | 182 | int origCount; |
b6a8714b | 183 | |
b6a8714b GM |
184 | origCount = count; |
185 | ||
186 | while (count) { | |
476b1e3a GM |
187 | if (TTYROOM() == 0) { |
188 | #if defined(unix) | |
189 | fd_set o; | |
190 | ||
191 | FD_ZERO(&o); | |
192 | #endif /* defined(unix) */ | |
0ea35455 | 193 | ttyflush(0); |
476b1e3a | 194 | while (TTYROOM() == 0) { |
b6a8714b GM |
195 | #if defined(unix) |
196 | FD_SET(tout, &o); | |
197 | (void) select(tout+1, (fd_set *) 0, &o, (fd_set *) 0, | |
198 | (struct timeval *) 0); | |
199 | #endif /* defined(unix) */ | |
0ea35455 | 200 | ttyflush(0); |
b6a8714b GM |
201 | } |
202 | } | |
66c4b72a GM |
203 | c = TTYROOM(); |
204 | if (c > count) { | |
205 | c = count; | |
476b1e3a | 206 | } |
66c4b72a GM |
207 | ring_supply_data(&ttyoring, buffer, c); |
208 | count -= c; | |
209 | buffer += c; | |
b6a8714b | 210 | } |
66c4b72a | 211 | return(origCount); |
b6a8714b | 212 | } |
b6a8714b GM |
213 | \f |
214 | ||
215 | /* | |
216 | * Push3270 - Try to send data along the 3270 output (to screen) direction. | |
217 | */ | |
218 | ||
476b1e3a | 219 | int |
b6a8714b GM |
220 | Push3270() |
221 | { | |
476b1e3a | 222 | int save = ring_full_count(&netiring); |
b6a8714b | 223 | |
476b1e3a GM |
224 | if (save) { |
225 | if (Ifrontp+save > Ibuf+sizeof Ibuf) { | |
b6a8714b GM |
226 | if (Ibackp != Ibuf) { |
227 | memcpy(Ibuf, Ibackp, Ifrontp-Ibackp); | |
228 | Ifrontp -= (Ibackp-Ibuf); | |
229 | Ibackp = Ibuf; | |
230 | } | |
231 | } | |
476b1e3a | 232 | if (Ifrontp+save < Ibuf+sizeof Ibuf) { |
b6a8714b GM |
233 | telrcv(); |
234 | } | |
235 | } | |
476b1e3a | 236 | return save != ring_full_count(&netiring); |
b6a8714b GM |
237 | } |
238 | ||
239 | ||
240 | /* | |
241 | * Finish3270 - get the last dregs of 3270 data out to the terminal | |
242 | * before quitting. | |
243 | */ | |
244 | ||
476b1e3a | 245 | void |
b6a8714b GM |
246 | Finish3270() |
247 | { | |
248 | while (Push3270() || !DoTerminalOutput()) { | |
249 | #if defined(unix) | |
250 | HaveInput = 0; | |
251 | #endif /* defined(unix) */ | |
252 | ; | |
253 | } | |
254 | } | |
255 | ||
256 | ||
257 | /* StringToTerminal - output a null terminated string to the terminal */ | |
258 | ||
259 | void | |
260 | StringToTerminal(s) | |
261 | char *s; | |
262 | { | |
263 | int count; | |
264 | ||
265 | count = strlen(s); | |
266 | if (count) { | |
267 | (void) DataToTerminal(s, count); /* we know it always goes... */ | |
268 | } | |
269 | } | |
270 | ||
271 | ||
272 | #if ((!defined(NOT43)) || defined(PUTCHAR)) | |
273 | /* _putchar - output a single character to the terminal. This name is so that | |
274 | * curses(3x) can call us to send out data. | |
275 | */ | |
276 | ||
277 | void | |
278 | _putchar(c) | |
279 | char c; | |
280 | { | |
b5e56c6f GM |
281 | #if defined(sun) /* SunOS 4.0 bug */ |
282 | c &= 0x7f; | |
283 | #endif /* defined(sun) */ | |
4127eb64 | 284 | if (!TTYROOM()) { |
b6a8714b GM |
285 | (void) DataToTerminal(&c, 1); |
286 | } else { | |
476b1e3a | 287 | TTYADD(c); |
b6a8714b GM |
288 | } |
289 | } | |
290 | #endif /* ((!defined(NOT43)) || defined(PUTCHAR)) */ | |
291 | ||
b307f09e GM |
292 | void |
293 | SetIn3270() | |
294 | { | |
32d22a68 GM |
295 | if (Sent3270TerminalType && should_I(TELOPT_BINARY) |
296 | && should_he(TELOPT_BINARY) && !donebinarytoggle) { | |
b307f09e GM |
297 | if (!In3270) { |
298 | In3270 = 1; | |
299 | Init3270(); /* Initialize 3270 functions */ | |
300 | /* initialize terminal key mapping */ | |
301 | InitTerminal(); /* Start terminal going */ | |
302 | setconnmode(); | |
303 | } | |
304 | } else { | |
305 | if (In3270) { | |
306 | StopScreen(1); | |
307 | In3270 = 0; | |
308 | Stop3270(); /* Tell 3270 we aren't here anymore */ | |
309 | setconnmode(); | |
310 | } | |
311 | } | |
312 | } | |
313 | ||
314 | /* | |
315 | * tn3270_ttype() | |
316 | * | |
317 | * Send a response to a terminal type negotiation. | |
318 | * | |
319 | * Return '0' if no more responses to send; '1' if a response sent. | |
320 | */ | |
321 | ||
322 | int | |
323 | tn3270_ttype() | |
324 | { | |
325 | /* | |
326 | * Try to send a 3270 type terminal name. Decide which one based | |
327 | * on the format of our screen, and (in the future) color | |
328 | * capaiblities. | |
329 | */ | |
330 | InitTerminal(); /* Sets MaxNumberColumns, MaxNumberLines */ | |
331 | if ((MaxNumberLines >= 24) && (MaxNumberColumns >= 80)) { | |
332 | Sent3270TerminalType = 1; | |
333 | if ((MaxNumberLines >= 27) && (MaxNumberColumns >= 132)) { | |
334 | MaxNumberLines = 27; | |
335 | MaxNumberColumns = 132; | |
336 | sb_terminal[SBTERMMODEL] = '5'; | |
337 | } else if (MaxNumberLines >= 43) { | |
338 | MaxNumberLines = 43; | |
339 | MaxNumberColumns = 80; | |
340 | sb_terminal[SBTERMMODEL] = '4'; | |
341 | } else if (MaxNumberLines >= 32) { | |
342 | MaxNumberLines = 32; | |
343 | MaxNumberColumns = 80; | |
344 | sb_terminal[SBTERMMODEL] = '3'; | |
345 | } else { | |
346 | MaxNumberLines = 24; | |
347 | MaxNumberColumns = 80; | |
348 | sb_terminal[SBTERMMODEL] = '2'; | |
349 | } | |
350 | NumberLines = 24; /* before we start out... */ | |
351 | NumberColumns = 80; | |
352 | ScreenSize = NumberLines*NumberColumns; | |
353 | if ((MaxNumberLines*MaxNumberColumns) > MAXSCREENSIZE) { | |
354 | ExitString("Programming error: MAXSCREENSIZE too small.\n", | |
355 | 1); | |
356 | /*NOTREACHED*/ | |
357 | } | |
358 | printsub(">", sb_terminal+2, sizeof sb_terminal-2); | |
359 | ring_supply_data(&netoring, sb_terminal, sizeof sb_terminal); | |
360 | return 1; | |
361 | } else { | |
362 | return 0; | |
363 | } | |
364 | } | |
476b1e3a GM |
365 | |
366 | #if defined(unix) | |
367 | settranscom(argc, argv) | |
368 | int argc; | |
369 | char *argv[]; | |
370 | { | |
0ea35455 | 371 | int i; |
476b1e3a GM |
372 | |
373 | if (argc == 1 && transcom) { | |
374 | transcom = 0; | |
375 | } | |
376 | if (argc == 1) { | |
377 | return; | |
378 | } | |
476b1e3a GM |
379 | transcom = tline; |
380 | (void) strcpy(transcom, argv[1]); | |
381 | for (i = 2; i < argc; ++i) { | |
382 | (void) strcat(transcom, " "); | |
383 | (void) strcat(transcom, argv[i]); | |
384 | } | |
385 | } | |
386 | #endif /* defined(unix) */ | |
387 | ||
b6a8714b | 388 | #endif /* defined(TN3270) */ |