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3e91ea2a | 1 | /* |
2d415723 KB |
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 | |
6 | * provided that this notice is preserved and that due credit is given | |
7 | * to the University of California at Berkeley. The name of the University | |
8 | * may not be used to endorse or promote products derived from this | |
9 | * software without specific prior written permission. This software | |
10 | * is provided ``as is'' without express or implied warranty. | |
3e91ea2a GM |
11 | */ |
12 | ||
13 | #ifndef lint | |
2d415723 KB |
14 | char copyright[] = |
15 | "@(#) Copyright (c) 1988 Regents of the University of California.\n\ | |
3e91ea2a | 16 | All rights reserved.\n"; |
2d415723 | 17 | #endif /* not lint */ |
3e91ea2a GM |
18 | |
19 | #ifndef lint | |
2d415723 KB |
20 | static char sccsid[] = "@(#)telnet.c 6.9 (Berkeley) %G%"; |
21 | #endif /* not lint */ | |
3e91ea2a GM |
22 | |
23 | /* | |
24 | * User telnet program, modified for use by tn3270.c. | |
25 | * | |
26 | * Many of the FUNCTIONAL changes in this newest version of TELNET | |
27 | * were suggested by Dave Borman of Cray Research, Inc. | |
28 | * | |
29 | * Other changes in the tn3270 side come from Alan Crosswell (Columbia), | |
30 | * Bob Braden (ISI), Steve Jacobson (Berkeley), and Cliff Frost (Berkeley). | |
31 | * | |
32 | * This code is common between telnet(1c) and tn3270(1c). There are the | |
33 | * following defines used to generate the various versions: | |
34 | * | |
35 | * TN3270 - This is to be linked with tn3270. | |
36 | * | |
3e91ea2a GM |
37 | * NOT43 - Allows the program to compile and run on |
38 | * a 4.2BSD system. | |
39 | * | |
40 | * PUTCHAR - Within tn3270, on a NOT43 system, | |
41 | * allows the use of the 4.3 curses | |
42 | * (greater speed updating the screen). | |
43 | * You need the 4.3 curses for this to work. | |
44 | * | |
45 | * FD_SETSIZE - On whichever system, if this isn't defined, | |
46 | * we patch over the FD_SET, etc., macros with | |
47 | * some homebrewed ones. | |
48 | * | |
49 | * SO_OOBINLINE - This is a socket option which we would like | |
50 | * to set to allow TCP urgent data to come | |
51 | * to us "inline". This is NECESSARY for | |
52 | * CORRECT operation, and desireable for | |
53 | * simpler operation. | |
54 | * | |
55 | * LNOFLSH - Detects the presence of the LNOFLSH bit | |
56 | * in the tty structure. | |
57 | * | |
58 | * unix - Compiles in unix specific stuff. | |
59 | * | |
42cf515f | 60 | * MSDOS - Compiles in MSDOS specific stuff. |
3e91ea2a GM |
61 | * |
62 | */ | |
63 | ||
64 | #if !defined(TN3270) | |
65 | #define ExitString(f,s,r) { fprintf(f, s); exit(r); } | |
66 | #define Exit(x) exit(x) | |
67 | #define SetIn3270() | |
68 | ||
69 | void setcommandmode(), command(); /* forward declarations */ | |
70 | #endif /* !defined(TN3270) */ | |
71 | ||
72 | #include <sys/types.h> | |
850b267c GM |
73 | |
74 | #if defined(pyr) | |
75 | #define fd_set fdset_t | |
76 | #endif /* defined(pyr) */ | |
77 | ||
3e91ea2a | 78 | #include <sys/socket.h> |
3e91ea2a GM |
79 | |
80 | #include <netinet/in.h> | |
81 | ||
3a764688 GM |
82 | #if defined(unix) |
83 | /* By the way, we need to include curses.h before telnet.h since, | |
84 | * among other things, telnet.h #defines 'DO', which is a variable | |
85 | * declared in curses.h. | |
86 | */ | |
3e91ea2a | 87 | #include <curses.h> |
3a764688 | 88 | #endif /* defined(unix) */ |
3e91ea2a GM |
89 | |
90 | #define TELOPTS | |
91 | #include <arpa/telnet.h> | |
92 | ||
93 | #if !defined(NOT43) | |
94 | #include <arpa/inet.h> | |
95 | #else /* !defined(NOT43) */ | |
96 | extern unsigned long inet_addr(); | |
97 | extern char *inet_ntoa(); | |
98 | #endif /* !defined(NOT43) */ | |
99 | ||
100 | #include <stdio.h> | |
101 | #include <ctype.h> | |
102 | #include <errno.h> | |
3e91ea2a GM |
103 | #include <setjmp.h> |
104 | #include <netdb.h> | |
3a764688 GM |
105 | |
106 | #if defined(unix) | |
3e91ea2a | 107 | #include <strings.h> |
3a764688 GM |
108 | #else /* defined(unix) */ |
109 | #include <string.h> | |
110 | #endif /* defined(unix) */ | |
3e91ea2a GM |
111 | |
112 | #if defined(TN3270) | |
3eb3862f | 113 | #include "ascii/termin.ext" |
3e91ea2a | 114 | #include "ctlr/screen.h" |
3eb3862f | 115 | #include "ctlr/oia.h" |
3e91ea2a GM |
116 | #include "ctlr/options.ext" |
117 | #include "ctlr/outbound.ext" | |
3eb3862f GM |
118 | #include "general/globals.h" |
119 | #include "telnet.ext" | |
3e91ea2a | 120 | #endif /* defined(TN3270) */ |
3eb3862f | 121 | |
3d05654e | 122 | #include "general/general.h" |
3e91ea2a GM |
123 | |
124 | ||
125 | ||
126 | #ifndef FD_SETSIZE | |
127 | /* | |
128 | * The following is defined just in case someone should want to run | |
129 | * this telnet on a 4.2 system. | |
130 | * | |
131 | */ | |
132 | ||
133 | #define FD_SET(n, p) ((p)->fds_bits[0] |= (1<<(n))) | |
134 | #define FD_CLR(n, p) ((p)->fds_bits[0] &= ~(1<<(n))) | |
135 | #define FD_ISSET(n, p) ((p)->fds_bits[0] & (1<<(n))) | |
136 | #define FD_ZERO(p) ((p)->fds_bits[0] = 0) | |
137 | ||
138 | #endif | |
139 | \f | |
140 | #define strip(x) ((x)&0x7f) | |
141 | #define min(x,y) ((x<y)? x:y) | |
142 | ||
143 | #if defined(TN3270) | |
0d3c45d4 | 144 | static char Ibuf[8*BUFSIZ], *Ifrontp, *Ibackp; |
3e91ea2a GM |
145 | #endif /* defined(TN3270) */ |
146 | ||
0d3c45d4 | 147 | static char ttyobuf[2*BUFSIZ], *tfrontp, *tbackp; |
3e91ea2a GM |
148 | #define TTYADD(c) { if (!(SYNCHing||flushout)) { *tfrontp++ = c; } } |
149 | #define TTYLOC() (tfrontp) | |
150 | #define TTYMAX() (ttyobuf+sizeof ttyobuf-1) | |
151 | #define TTYMIN() (netobuf) | |
152 | #define TTYBYTES() (tfrontp-tbackp) | |
153 | #define TTYROOM() (TTYMAX()-TTYLOC()+1) | |
154 | ||
0d3c45d4 | 155 | static char netobuf[2*BUFSIZ], *nfrontp, *nbackp; |
3e91ea2a GM |
156 | #define NETADD(c) { *nfrontp++ = c; } |
157 | #define NET2ADD(c1,c2) { NETADD(c1); NETADD(c2); } | |
158 | #define NETLOC() (nfrontp) | |
159 | #define NETMAX() (netobuf+sizeof netobuf-1) | |
160 | #define NETBYTES() (nfrontp-nbackp) | |
161 | #define NETROOM() (NETMAX()-NETLOC()+1) | |
0d3c45d4 | 162 | static char *neturg; /* one past last byte of urgent data */ |
3e91ea2a | 163 | |
0d3c45d4 GM |
164 | static char subbuffer[100], |
165 | *subpointer, *subend; /* buffer for sub-options */ | |
3e91ea2a GM |
166 | #define SB_CLEAR() subpointer = subbuffer; |
167 | #define SB_TERM() subend = subpointer; | |
168 | #define SB_ACCUM(c) if (subpointer < (subbuffer+sizeof subbuffer)) { \ | |
169 | *subpointer++ = (c); \ | |
170 | } | |
171 | ||
172 | static char sb_terminal[] = { IAC, SB, | |
173 | TELOPT_TTYPE, TELQUAL_IS, | |
174 | 'I', 'B', 'M', '-', '3', '2', '7', '8', '-', '2', | |
175 | IAC, SE }; | |
176 | #define SBTERMMODEL 13 | |
177 | ||
178 | ||
0d3c45d4 GM |
179 | static char hisopts[256]; |
180 | static char myopts[256]; | |
3e91ea2a GM |
181 | |
182 | static char doopt[] = { IAC, DO, '%', 'c', 0 }; | |
183 | static char dont[] = { IAC, DONT, '%', 'c', 0 }; | |
184 | static char will[] = { IAC, WILL, '%', 'c', 0 }; | |
185 | static char wont[] = { IAC, WONT, '%', 'c', 0 }; | |
186 | ||
187 | struct cmd { | |
188 | char *name; /* command name */ | |
189 | char *help; /* help string */ | |
190 | int (*handler)(); /* routine which executes command */ | |
191 | int dohelp; /* Should we give general help information? */ | |
192 | int needconnect; /* Do we need to be connected to execute? */ | |
193 | }; | |
194 | ||
0d3c45d4 | 195 | static char sibuf[BUFSIZ], *sbp; |
3e91ea2a GM |
196 | static char tibuf[BUFSIZ], *tbp; |
197 | static fd_set ibits, obits, xbits; | |
198 | ||
199 | ||
200 | static int | |
0d3c45d4 GM |
201 | connected, |
202 | net, | |
203 | scc, | |
204 | tcc, | |
205 | showoptions, | |
206 | In3270, /* Are we in 3270 mode? */ | |
207 | ISend, /* trying to send network data in */ | |
3e91ea2a | 208 | debug = 0, |
0d3c45d4 | 209 | crmod, |
614687b7 GM |
210 | netdata, /* Print out network data flow */ |
211 | crlf, /* Should '\r' be mapped to <CR><LF> (or <CR><NUL>)? */ | |
3dd51ee4 | 212 | noasynch = 0, /* User specified "-noasynch" on command line */ |
04b5f59e | 213 | askedSGA = 0, /* We have talked about suppress go ahead */ |
3e91ea2a GM |
214 | telnetport = 1; |
215 | ||
0d3c45d4 | 216 | static FILE *NetTrace = 0; /* Not in bss, since needs to stay */ |
3e91ea2a GM |
217 | |
218 | #define CONTROL(x) ((x)&0x1f) /* CTRL(x) is not portable */ | |
219 | ||
220 | static char | |
221 | *prompt = 0, | |
0d3c45d4 GM |
222 | escape, |
223 | echoc; | |
3e91ea2a GM |
224 | |
225 | static int | |
0d3c45d4 GM |
226 | SYNCHing, /* we are in TELNET SYNCH mode */ |
227 | flushout, /* flush output */ | |
3e91ea2a | 228 | autoflush = 0, /* flush output when interrupting? */ |
0d3c45d4 GM |
229 | autosynch, /* send interrupt characters with SYNCH? */ |
230 | localchars, /* we recognize interrupt/quit */ | |
4f8919ec GM |
231 | donelclchars, /* the user has set "localchars" */ |
232 | donebinarytoggle, /* the user has put us in binary */ | |
3a764688 GM |
233 | dontlecho, /* do we suppress local echoing right now? */ |
234 | globalmode; | |
3e91ea2a GM |
235 | |
236 | /* The following are some tn3270 specific flags */ | |
237 | #if defined(TN3270) | |
238 | ||
239 | static int | |
0d3c45d4 | 240 | Sent3270TerminalType; /* Have we said we are a 3270? */ |
3e91ea2a | 241 | |
42cf515f GM |
242 | /* Some real, live, globals. */ |
243 | int | |
244 | tout, /* Output file descriptor */ | |
245 | tin; /* Input file descriptor */ | |
246 | ||
247 | #else /* defined(TN3270) */ | |
248 | static int tin, tout; /* file descriptors */ | |
249 | #endif /* defined(TN3270) */ | |
250 | ||
251 | ||
04b5f59e GM |
252 | /* |
253 | * Telnet receiver states for fsm | |
254 | */ | |
255 | #define TS_DATA 0 | |
256 | #define TS_IAC 1 | |
257 | #define TS_WILL 2 | |
258 | #define TS_WONT 3 | |
259 | #define TS_DO 4 | |
260 | #define TS_DONT 5 | |
261 | #define TS_CR 6 | |
262 | #define TS_SB 7 /* sub-option collection */ | |
263 | #define TS_SE 8 /* looking for sub-option end */ | |
264 | ||
265 | static int telrcv_state = TS_DATA; | |
3e91ea2a GM |
266 | |
267 | static char line[200]; | |
0d3c45d4 | 268 | static int margc; |
3e91ea2a GM |
269 | static char *margv[20]; |
270 | ||
3a764688 GM |
271 | static jmp_buf toplevel = { 0 }; |
272 | static jmp_buf peerdied; | |
273 | ||
274 | extern int errno; | |
275 | ||
276 | ||
277 | static struct sockaddr_in sin; | |
278 | ||
279 | static struct servent *sp = 0; | |
280 | ||
281 | static int flushline; | |
282 | ||
283 | static char *hostname; | |
284 | static char hnamebuf[32]; | |
285 | ||
286 | /* | |
287 | * The following are some clocks used to decide how to interpret | |
288 | * the relationship between various variables. | |
289 | */ | |
290 | ||
291 | static struct { | |
292 | int | |
293 | system, /* what the current time is */ | |
294 | echotoggle, /* last time user entered echo character */ | |
295 | modenegotiated, /* last time operating mode negotiated */ | |
296 | didnetreceive, /* last time we read data from network */ | |
297 | gotDM; /* when did we last see a data mark */ | |
298 | } clocks; | |
299 | ||
300 | #define settimer(x) clocks.x = clocks.system++ | |
301 | \f | |
302 | /* Various modes */ | |
303 | #define MODE_LINE(m) (modelist[m].modetype & LINE) | |
304 | #define MODE_LOCAL_CHARS(m) (modelist[m].modetype & LOCAL_CHARS) | |
42cf515f GM |
305 | #define MODE_LOCAL_ECHO(m) (modelist[m].modetype & LOCAL_ECHO) |
306 | #define MODE_COMMAND_LINE(m) (modelist[m].modetype & COMMAND_LINE) | |
3a764688 GM |
307 | |
308 | #define LOCAL_CHARS 0x01 /* Characters processed locally */ | |
309 | #define LINE 0x02 /* Line-by-line mode of operation */ | |
42cf515f GM |
310 | #define LOCAL_ECHO 0x04 /* Echoing locally */ |
311 | #define COMMAND_LINE 0x08 /* Command line mode */ | |
3a764688 GM |
312 | |
313 | static struct { | |
314 | char *modedescriptions; | |
315 | char modetype; | |
316 | } modelist[] = { | |
42cf515f | 317 | { "telnet command mode", COMMAND_LINE }, |
3a764688 | 318 | { "character-at-a-time mode", 0 }, |
42cf515f | 319 | { "character-at-a-time mode (local echo)", LOCAL_ECHO|LOCAL_CHARS }, |
3a764688 | 320 | { "line-by-line mode (remote echo)", LINE | LOCAL_CHARS }, |
42cf515f | 321 | { "line-by-line mode", LINE | LOCAL_ECHO | LOCAL_CHARS }, |
3a764688 GM |
322 | { "line-by-line mode (local echoing suppressed)", LINE | LOCAL_CHARS }, |
323 | { "3270 mode", 0 }, | |
324 | }; | |
325 | ||
326 | \f | |
327 | /* | |
328 | * The following routines try to encapsulate what is system dependent | |
329 | * (at least between 4.x and dos) which is used in telnet.c. | |
330 | */ | |
331 | ||
332 | #if defined(unix) | |
333 | #include <sys/ioctl.h> | |
334 | #include <sys/time.h> | |
335 | #include <signal.h> | |
336 | ||
337 | int | |
338 | HaveInput; /* There is input available to scan */ | |
339 | ||
340 | #if defined(TN3270) | |
341 | static char tline[200]; | |
342 | char *transcom = 0; /* transparent mode command (default: none) */ | |
343 | #endif /* defined(TN3270) */ | |
344 | ||
345 | static struct tchars otc = { 0 }, ntc = { 0 }; | |
346 | static struct ltchars oltc = { 0 }, nltc = { 0 }; | |
347 | static struct sgttyb ottyb = { 0 }, nttyb = { 0 }; | |
348 | ||
349 | ||
42cf515f GM |
350 | #define TerminalWrite(fd,buf,n) write(fd,buf,n) |
351 | #define TerminalRead(fd,buf,n) read(fd,buf,n) | |
352 | ||
3a764688 GM |
353 | /* |
354 | * | |
355 | */ | |
356 | ||
357 | static int | |
42cf515f | 358 | TerminalAutoFlush() /* unix */ |
3a764688 GM |
359 | { |
360 | #if defined(LNOFLSH) | |
361 | ioctl(0, TIOCLGET, (char *)&autoflush); | |
362 | return !(autoflush&LNOFLSH); /* if LNOFLSH, no autoflush */ | |
363 | #else /* LNOFLSH */ | |
364 | return 1; | |
365 | #endif /* LNOFLSH */ | |
366 | } | |
367 | ||
368 | /* | |
42cf515f | 369 | * TerminalSpecialChars() |
3a764688 | 370 | * |
42cf515f GM |
371 | * Look at an input character to see if it is a special character |
372 | * and decide what to do. | |
3a764688 GM |
373 | * |
374 | * Output: | |
375 | * | |
376 | * 0 Don't add this character. | |
377 | * 1 Do add this character | |
378 | */ | |
379 | ||
380 | int | |
42cf515f | 381 | TerminalSpecialChars(c) /* unix */ |
3a764688 GM |
382 | int c; |
383 | { | |
384 | void doflush(), intp(), sendbrk(); | |
385 | ||
386 | if (c == ntc.t_intrc) { | |
387 | intp(); | |
388 | return 0; | |
389 | } else if (c == ntc.t_quitc) { | |
390 | sendbrk(); | |
391 | return 0; | |
392 | } else if (c == nltc.t_flushc) { | |
393 | NET2ADD(IAC, AO); | |
394 | if (autoflush) { | |
395 | doflush(); | |
396 | } | |
397 | return 0; | |
398 | } else if (!MODE_LOCAL_CHARS(globalmode)) { | |
399 | if (c == nttyb.sg_kill) { | |
400 | NET2ADD(IAC, EL); | |
401 | return 0; | |
402 | } else if (c == nttyb.sg_erase) { | |
403 | NET2ADD(IAC, EC); | |
404 | return 0; | |
405 | } | |
406 | } | |
407 | return 1; | |
408 | } | |
409 | ||
410 | ||
411 | /* | |
412 | * Flush output to the terminal | |
413 | */ | |
414 | ||
415 | static void | |
416 | TerminalFlushOutput() /* unix */ | |
417 | { | |
418 | (void) ioctl(fileno(stdout), TIOCFLUSH, (char *) 0); | |
419 | } | |
420 | ||
421 | static void | |
422 | TerminalSaveState() /* unix */ | |
423 | { | |
424 | ioctl(0, TIOCGETP, (char *)&ottyb); | |
425 | ioctl(0, TIOCGETC, (char *)&otc); | |
426 | ioctl(0, TIOCGLTC, (char *)&oltc); | |
427 | ||
428 | ntc = otc; | |
429 | nltc = oltc; | |
430 | nttyb = ottyb; | |
431 | } | |
432 | ||
433 | static void | |
434 | TerminalRestoreState() /* unix */ | |
435 | { | |
436 | } | |
437 | ||
438 | /* | |
439 | * TerminalNewMode - set up terminal to a specific mode. | |
440 | */ | |
441 | ||
442 | ||
443 | static void | |
42cf515f | 444 | TerminalNewMode(f) /* unix */ |
3a764688 GM |
445 | register int f; |
446 | { | |
447 | static int prevmode = 0; | |
448 | struct tchars *tc; | |
449 | struct tchars tc3; | |
450 | struct ltchars *ltc; | |
451 | struct sgttyb sb; | |
452 | int onoff; | |
453 | int old; | |
454 | struct tchars notc2; | |
455 | struct ltchars noltc2; | |
456 | static struct tchars notc = { -1, -1, -1, -1, -1, -1 }; | |
457 | static struct ltchars noltc = { -1, -1, -1, -1, -1, -1 }; | |
458 | ||
459 | globalmode = f; | |
460 | if (prevmode == f) | |
461 | return; | |
462 | old = prevmode; | |
463 | prevmode = f; | |
464 | sb = nttyb; | |
465 | ||
466 | switch (f) { | |
467 | ||
468 | case 0: | |
469 | onoff = 0; | |
470 | tc = &otc; | |
471 | ltc = &oltc; | |
472 | break; | |
473 | ||
474 | case 1: /* remote character processing, remote echo */ | |
475 | case 2: /* remote character processing, local echo */ | |
476 | case 6: /* 3270 mode - like 1, but with xon/xoff local */ | |
477 | /* (might be nice to have "6" in telnet also...) */ | |
478 | sb.sg_flags |= CBREAK; | |
479 | if ((f == 1) || (f == 6)) { | |
480 | sb.sg_flags &= ~(ECHO|CRMOD); | |
481 | } else { | |
482 | sb.sg_flags |= ECHO|CRMOD; | |
483 | } | |
484 | sb.sg_erase = sb.sg_kill = -1; | |
485 | if (f == 6) { | |
486 | tc = &tc3; | |
487 | tc3 = notc; | |
488 | /* get XON, XOFF characters */ | |
489 | tc3.t_startc = otc.t_startc; | |
490 | tc3.t_stopc = otc.t_stopc; | |
491 | } else { | |
492 | /* | |
493 | * If user hasn't specified one way or the other, | |
494 | * then default to not trapping signals. | |
495 | */ | |
496 | if (!donelclchars) { | |
497 | localchars = 0; | |
498 | } | |
499 | if (localchars) { | |
500 | notc2 = notc; | |
501 | notc2.t_intrc = ntc.t_intrc; | |
502 | notc2.t_quitc = ntc.t_quitc; | |
503 | tc = ¬c2; | |
504 | } else { | |
505 | tc = ¬c; | |
506 | } | |
507 | } | |
508 | ltc = &noltc; | |
509 | onoff = 1; | |
510 | break; | |
511 | case 3: /* local character processing, remote echo */ | |
512 | case 4: /* local character processing, local echo */ | |
513 | case 5: /* local character processing, no echo */ | |
514 | sb.sg_flags &= ~CBREAK; | |
515 | sb.sg_flags |= CRMOD; | |
516 | if (f == 4) | |
517 | sb.sg_flags |= ECHO; | |
518 | else | |
519 | sb.sg_flags &= ~ECHO; | |
520 | notc2 = ntc; | |
521 | tc = ¬c2; | |
522 | noltc2 = oltc; | |
523 | ltc = &noltc2; | |
524 | /* | |
525 | * If user hasn't specified one way or the other, | |
526 | * then default to trapping signals. | |
527 | */ | |
528 | if (!donelclchars) { | |
529 | localchars = 1; | |
530 | } | |
531 | if (localchars) { | |
532 | notc2.t_brkc = nltc.t_flushc; | |
533 | noltc2.t_flushc = -1; | |
534 | } else { | |
535 | notc2.t_intrc = notc2.t_quitc = -1; | |
536 | } | |
537 | noltc2.t_suspc = escape; | |
538 | noltc2.t_dsuspc = -1; | |
539 | onoff = 1; | |
540 | break; | |
541 | ||
542 | default: | |
543 | return; | |
544 | } | |
545 | ioctl(tin, TIOCSLTC, (char *)ltc); | |
546 | ioctl(tin, TIOCSETC, (char *)tc); | |
547 | ioctl(tin, TIOCSETP, (char *)&sb); | |
548 | #if (!defined(TN3270)) || ((!defined(NOT43)) || defined(PUTCHAR)) | |
549 | ioctl(tin, FIONBIO, (char *)&onoff); | |
550 | ioctl(tout, FIONBIO, (char *)&onoff); | |
551 | #endif /* (!defined(TN3270)) || ((!defined(NOT43)) || defined(PUTCHAR)) */ | |
3dd51ee4 GM |
552 | #if defined(TN3270) |
553 | if (noasynch == 0) { | |
554 | ioctl(tin, FIOASYNC, (char *)&onoff); | |
555 | } | |
556 | #endif /* defined(TN3270) */ | |
3a764688 GM |
557 | |
558 | if (MODE_LINE(f)) { | |
559 | void doescape(); | |
560 | ||
561 | signal(SIGTSTP, doescape); | |
562 | } else if (MODE_LINE(old)) { | |
563 | signal(SIGTSTP, SIG_DFL); | |
564 | sigsetmask(sigblock(0) & ~(1<<(SIGTSTP-1))); | |
565 | } | |
566 | } | |
567 | ||
568 | ||
42cf515f GM |
569 | int |
570 | NetClose(net) | |
571 | int net; | |
572 | { | |
573 | return close(net); | |
574 | } | |
575 | ||
576 | ||
3a764688 GM |
577 | static void |
578 | NetNonblockingIO(fd, onoff) /* unix */ | |
579 | int | |
580 | fd, | |
581 | onoff; | |
582 | { | |
583 | ioctl(net, FIONBIO, (char *)&onoff); | |
584 | } | |
585 | ||
586 | static void | |
587 | NetSigIO(fd, onoff) /* unix */ | |
588 | int | |
589 | fd, | |
590 | onoff; | |
591 | { | |
592 | ioctl(net, FIOASYNC, (char *)&onoff); /* hear about input */ | |
593 | } | |
594 | ||
595 | static void | |
596 | NetSetPgrp(fd) /* unix */ | |
597 | int fd; | |
598 | { | |
599 | int myPid; | |
600 | ||
601 | myPid = getpid(); | |
602 | #if defined(NOT43) | |
603 | myPid = -myPid; | |
604 | #endif /* defined(NOT43) */ | |
605 | ioctl(net, SIOCSPGRP, (char *)&myPid); /* set my pid */ | |
606 | } | |
607 | ||
608 | ||
609 | #endif /* defined(unix) */ | |
610 | \f | |
611 | #if defined(MSDOS) | |
612 | #include <time.h> | |
42cf515f | 613 | #include <signal.h> |
7a29e53d | 614 | #include <process.h> |
d31849e3 GM |
615 | #include <fcntl.h> |
616 | #include <io.h> | |
98729b33 GM |
617 | #include <dos.h> |
618 | ||
3a764688 GM |
619 | #if !defined(SO_OOBINLINE) |
620 | #define SO_OOBINLINE | |
621 | #endif /* !defined(SO_OOBINLINE) */ | |
622 | ||
623 | ||
624 | static char | |
42cf515f | 625 | termEofChar, |
3a764688 GM |
626 | termEraseChar, |
627 | termFlushChar, | |
628 | termIntChar, | |
629 | termKillChar, | |
42cf515f GM |
630 | termLiteralNextChar, |
631 | termQuitChar; | |
632 | ||
0d0eda31 GM |
633 | static char |
634 | savedInState, savedOutState; | |
42cf515f GM |
635 | \f |
636 | /* | |
637 | * MSDOS doesn't have anyway of deciding whether a full-edited line | |
638 | * is ready to be read in, so we need to do character-by-character | |
639 | * reads, and then do the editing in the program (in the case where | |
640 | * we are supporting line-by-line mode). | |
641 | * | |
642 | * The following routines, which are internal to the MSDOS-specific | |
643 | * code, accomplish this miracle. | |
644 | */ | |
645 | ||
646 | #define Hex(c) HEX[(c)&0xff] | |
647 | ||
648 | static survivorSetup = 0; /* Do we have ^C hooks in? */ | |
649 | ||
650 | static int | |
651 | lineend = 0, /* There is a line terminator */ | |
652 | ctrlCCount = 0; | |
653 | ||
654 | static char linein[200], /* Where input line is assembled */ | |
655 | *nextin = linein, /* Next input character */ | |
656 | *nextout = linein; /* Next character to be consumed */ | |
657 | ||
658 | #define consumechar() \ | |
659 | if ((++nextout) >= nextin) { \ | |
660 | nextout = nextin = linein; \ | |
661 | lineend = 0; \ | |
662 | } | |
663 | ||
664 | #define characteratatime() (!MODE_LINE(globalmode)) /* one by one */ | |
665 | ||
666 | ||
667 | /* | |
668 | * killone() | |
669 | * | |
670 | * Erase the last character on the line. | |
671 | */ | |
672 | ||
673 | static void | |
674 | killone() | |
675 | { | |
676 | if (lineend) { | |
677 | return; /* ??? XXX */ | |
678 | } | |
679 | if (nextin == linein) { | |
680 | return; /* Nothing to do */ | |
681 | } | |
682 | nextin--; | |
683 | if (!(isspace(*nextin) || isprint(*nextin))) { | |
684 | putchar('\b'); | |
685 | putchar(' '); | |
686 | putchar('\b'); | |
687 | } | |
688 | putchar('\b'); | |
689 | putchar(' '); | |
690 | putchar('\b'); | |
691 | } | |
692 | ||
693 | ||
694 | /* | |
695 | * setlineend() | |
696 | * | |
697 | * Decide if it's time to send the current line up to the user | |
698 | * process. | |
699 | */ | |
700 | ||
701 | static void | |
702 | setlineend() | |
703 | { | |
704 | if (nextin == nextout) { | |
705 | return; | |
706 | } | |
707 | if (characteratatime()) { | |
708 | lineend = 1; | |
709 | } else if (nextin >= (linein+sizeof linein)) { | |
710 | lineend = 1; | |
711 | } else { | |
712 | int c = *(nextin-1); | |
713 | if ((c == termIntChar) | |
714 | || (c == termQuitChar) | |
715 | || (c == termEofChar)) { | |
716 | lineend = 1; | |
717 | } else if (c == termFlushChar) { | |
718 | lineend = 1; | |
719 | } else if ((c == '\n') || (c == '\r')) { | |
720 | lineend = 1; | |
721 | } | |
722 | } | |
723 | /* Otherwise, leave it alone (reset by 'consumechar') */ | |
724 | } | |
725 | ||
726 | /* | |
727 | * OK, what we do here is: | |
728 | * | |
729 | * o If we are echoing, then | |
730 | * o Look for character erase, line kill characters | |
731 | * o Echo the character (using '^' if a control character) | |
732 | * o Put the character in the input buffer | |
733 | * o Set 'lineend' as necessary | |
734 | */ | |
735 | ||
736 | static void | |
737 | DoNextChar(c) | |
738 | int c; /* Character to process */ | |
739 | { | |
740 | static char literalnextcharacter = 0; | |
741 | ||
742 | if (nextin >= (linein+sizeof linein)) { | |
743 | putchar('\7'); /* Ring bell */ | |
744 | setlineend(); | |
745 | return; | |
746 | } | |
747 | if (MODE_LOCAL_CHARS(globalmode)) { | |
748 | /* Look for some special character */ | |
749 | if (!literalnextcharacter) { | |
750 | if (c == termEraseChar) { | |
751 | killone(); | |
752 | setlineend(); | |
753 | return; | |
754 | } else if (c == termKillChar) { | |
755 | while (nextin != linein) { | |
756 | killone(); | |
757 | } | |
758 | setlineend(); | |
759 | return; | |
760 | } else if (c == termLiteralNextChar) { | |
761 | literalnextcharacter = 1; | |
762 | return; | |
763 | } | |
764 | } | |
765 | ||
766 | if (MODE_LOCAL_ECHO(globalmode)) { | |
767 | if ((literalnextcharacter == 0) && ((c == '\r') || (c == '\n'))) { | |
768 | putchar('\r'); | |
769 | putchar('\n'); | |
770 | c = '\n'; | |
771 | } else if (!isprint(c) && !isspace(c)) { | |
772 | putchar('^'); | |
773 | putchar(c^0x40); | |
774 | } else { | |
775 | putchar(c); | |
776 | } | |
777 | } | |
778 | literalnextcharacter = 0; | |
779 | } | |
780 | *nextin++ = c; | |
781 | setlineend(); | |
782 | } | |
783 | ||
784 | static int | |
785 | inputExists() | |
786 | { | |
787 | int input; | |
788 | static state = 0; | |
789 | ||
790 | while (ctrlCCount) { | |
791 | DoNextChar(0x03); | |
792 | ctrlCCount--; | |
793 | } | |
794 | if (lineend) { | |
795 | return 1; | |
796 | } | |
7a29e53d GM |
797 | #if 1 /* For BIOS variety of calls */ |
798 | if (kbhit() == 0) { | |
42cf515f GM |
799 | return lineend; |
800 | } | |
801 | input = getch(); /* MSC - get console character */ | |
7a29e53d GM |
802 | if ((input&0xff) == 0) { |
803 | DoNextChar(0x01); /* ^A */ | |
804 | } else { | |
805 | DoNextChar(input&0xff); | |
806 | } | |
807 | #else /* 0 */ | |
808 | if ((input = dirconio()) == -1) { | |
809 | return lineend; | |
810 | } | |
42cf515f GM |
811 | if ((input&0xff) == 0) { |
812 | if ((input&0xff00) == 0x0300) { /* Null */ | |
813 | DoNextChar(0); | |
814 | } else { | |
815 | DoNextChar(0x01); | |
816 | if (input&0x8000) { | |
817 | DoNextChar(0x01); | |
818 | DoNextChar((input>>8)&0x7f); | |
819 | } else { | |
820 | DoNextChar((input>>8)&0xff); | |
821 | } | |
822 | } | |
823 | } else { | |
824 | DoNextChar(input&0xff); | |
825 | } | |
826 | #endif /* 0 */ | |
42cf515f GM |
827 | return lineend; |
828 | } | |
829 | ||
830 | ||
831 | void | |
832 | CtrlCInterrupt() | |
833 | { | |
834 | if (!MODE_COMMAND_LINE(globalmode)) { | |
0d0eda31 GM |
835 | char far *Bios_Break = (char far *) (((long)0x40<<16)|0x71); |
836 | ||
837 | *Bios_Break = 0; | |
42cf515f GM |
838 | ctrlCCount++; /* XXX */ |
839 | signal(SIGINT, CtrlCInterrupt); | |
840 | } else { | |
841 | closeallsockets(); | |
7a29e53d | 842 | exit(1); |
42cf515f GM |
843 | } |
844 | } | |
0d0eda31 GM |
845 | |
846 | int | |
847 | dosbinary(fd, onoff) | |
848 | int fd; | |
849 | int onoff; | |
850 | { | |
851 | union REGS regs; | |
852 | int oldstate; | |
853 | ||
854 | /* Get old stuff */ | |
855 | regs.h.ah = 0x44; | |
856 | regs.h.al = 0; | |
857 | regs.x.bx = fd; | |
858 | intdos(®s, ®s); | |
859 | oldstate = regs.h.dl&(1<<5); /* Save state */ | |
860 | ||
861 | /* Set correct bits in new mode */ | |
862 | regs.h.dh = 0; | |
863 | if (onoff) { | |
864 | regs.h.dl |= 1<<5; | |
865 | } else { | |
866 | regs.h.dl &= ~(1<<5); | |
867 | } | |
868 | ||
869 | /* Set in new mode */ | |
870 | regs.h.ah = 0x44; | |
871 | regs.h.al = 1; | |
872 | regs.x.bx = fd; | |
873 | intdos(®s, ®s); | |
874 | ||
875 | return oldstate; | |
876 | } | |
42cf515f GM |
877 | \f |
878 | /* | |
879 | * The MSDOS routines, called from elsewhere. | |
880 | */ | |
881 | ||
882 | ||
883 | static int | |
884 | TerminalAutoFlush() /* MSDOS */ | |
885 | { | |
886 | return 1; | |
887 | } | |
888 | ||
889 | static int | |
890 | TerminalCanRead() | |
891 | { | |
892 | return inputExists(); | |
893 | } | |
3e91ea2a | 894 | |
3e91ea2a | 895 | |
3a764688 GM |
896 | /* |
897 | * Flush output to the terminal | |
898 | */ | |
899 | ||
900 | static void | |
901 | TerminalFlushOutput() /* MSDOS */ | |
902 | { | |
903 | } | |
3e91ea2a | 904 | |
42cf515f GM |
905 | |
906 | static void | |
907 | TerminalNewMode(f) /* MSDOS */ | |
908 | register int f; | |
909 | { | |
98729b33 GM |
910 | union REGS inregs; |
911 | struct SREGS segregs; | |
912 | static old_1b_offset = 0, old_1b_segment = 0; | |
913 | ||
42cf515f | 914 | globalmode = f; |
98729b33 | 915 | if (MODE_COMMAND_LINE(f)) { |
d31849e3 | 916 | signal(SIGINT, SIG_DFL); |
98729b33 GM |
917 | if (old_1b_segment|old_1b_offset) { |
918 | inregs.h.ah = 0x25; | |
919 | inregs.h.al = 0x1b; | |
920 | inregs.x.dx = old_1b_offset; | |
921 | segregs.ds = old_1b_segment; | |
922 | intdosx(&inregs, &inregs, &segregs); | |
923 | old_1b_segment = old_1b_offset = 0; | |
924 | } | |
d31849e3 GM |
925 | if (setmode(fileno(stdout), O_TEXT) == -1) { |
926 | ExitPerror("setmode (text)", 1); | |
927 | } | |
0d0eda31 | 928 | (void) dosbinary(fileno(stdout), 0); |
d31849e3 GM |
929 | if (setmode(fileno(stdin), O_TEXT) == -1) { |
930 | ExitPerror("setmode (text)", 1); | |
931 | } | |
0d0eda31 | 932 | (void) dosbinary(fileno(stdin), 0); |
98729b33 | 933 | } else { |
d31849e3 | 934 | signal(SIGINT, CtrlCInterrupt); |
98729b33 GM |
935 | if ((old_1b_segment|old_1b_offset) == 0) { |
936 | extern void iret_subr(); | |
937 | void (far *foo_subr)() = iret_subr; | |
938 | ||
939 | inregs.h.ah = 0x35; | |
940 | inregs.h.al = 0x1b; | |
941 | intdosx(&inregs, &inregs, &segregs); | |
942 | old_1b_segment = segregs.es; | |
943 | old_1b_offset = inregs.x.bx; | |
944 | inregs.h.ah = 0x25; | |
945 | inregs.h.al = 0x1b; | |
946 | inregs.x.dx = FP_OFF(foo_subr); | |
947 | segregs.ds = FP_SEG(foo_subr); | |
948 | intdosx(&inregs, &inregs, &segregs); | |
949 | } | |
55cf84ff GM |
950 | if (MODE_LOCAL_CHARS(f)) { |
951 | if (setmode(fileno(stdout), O_TEXT) == -1) { | |
952 | ExitPerror("setmode (text)", 1); | |
953 | } | |
0d0eda31 | 954 | (void) dosbinary(fileno(stdout), 0); |
55cf84ff GM |
955 | if (setmode(fileno(stdin), O_TEXT) == -1) { |
956 | ExitPerror("setmode (text)", 1); | |
957 | } | |
0d0eda31 | 958 | (void) dosbinary(fileno(stdin), 0); |
55cf84ff GM |
959 | } else { |
960 | if (setmode(fileno(stdout), O_BINARY) == -1) { | |
961 | ExitPerror("setmode (binary)", 1); | |
962 | } | |
0d0eda31 | 963 | (void) dosbinary(fileno(stdout), 1); |
55cf84ff GM |
964 | if (setmode(fileno(stdin), O_BINARY) == -1) { |
965 | ExitPerror("setmode (binary)", 1); | |
966 | } | |
0d0eda31 | 967 | (void) dosbinary(fileno(stdin), 1); |
d31849e3 | 968 | } |
98729b33 | 969 | } |
42cf515f GM |
970 | } |
971 | ||
972 | ||
973 | int | |
974 | TerminalRead(fd, buffer, count) | |
975 | int fd; | |
976 | char *buffer; | |
977 | int count; | |
978 | { | |
979 | int done = 0; | |
980 | ||
981 | for (;;) { | |
982 | while (inputExists() && (done < count)) { | |
983 | *buffer++ = *nextout; | |
984 | consumechar(); | |
985 | done++; | |
986 | } | |
987 | if (done) { | |
988 | return(done); | |
989 | } else { | |
990 | return 0; | |
991 | } | |
992 | } | |
993 | } | |
994 | ||
995 | ||
3a764688 GM |
996 | static void |
997 | TerminalSaveState() /* MSDOS */ | |
998 | { | |
0d0eda31 GM |
999 | savedInState = dosbinary(fileno(stdin), 0); |
1000 | savedOutState = dosbinary(fileno(stdout), 0); | |
3a764688 | 1001 | } |
3e91ea2a | 1002 | |
42cf515f GM |
1003 | int |
1004 | TerminalSpecialChars(c) /* MSDOS */ | |
1005 | { | |
1006 | return 1; | |
1007 | } | |
1008 | ||
1009 | ||
3a764688 GM |
1010 | static void |
1011 | TerminalRestoreState() /* MSDOS */ | |
1012 | { | |
0d0eda31 GM |
1013 | (void) dosbinary(fileno(stdin), savedInState); |
1014 | (void) dosbinary(fileno(stdout), savedOutState); | |
3a764688 | 1015 | } |
3e91ea2a | 1016 | |
42cf515f GM |
1017 | |
1018 | static int | |
1019 | TerminalWrite(fd, buffer, count) /* MSDOS */ | |
1020 | int fd; | |
1021 | char *buffer; | |
1022 | int count; | |
1023 | { | |
1024 | return fwrite(buffer, sizeof (char), count, stdout); | |
1025 | } | |
1026 | ||
1027 | ||
1028 | static int | |
1029 | NetClose(fd) | |
1030 | { | |
1031 | return closesocket(fd); | |
1032 | } | |
1033 | ||
3a764688 GM |
1034 | static void |
1035 | NetNonblockingIO(fd, onoff) /* MSDOS */ | |
1036 | int | |
1037 | fd, | |
1038 | onoff; | |
1039 | { | |
1040 | if (SetSockOpt(net, SOL_SOCKET, SO_NONBLOCKING, onoff)) { | |
1041 | perror("setsockop (SO_NONBLOCKING) "); | |
42cf515f | 1042 | ExitString(stderr, "exiting\n", 1); |
3a764688 GM |
1043 | } |
1044 | } | |
3e91ea2a | 1045 | |
3a764688 GM |
1046 | static void |
1047 | NetSigIO(fd) /* MSDOS */ | |
1048 | int fd; | |
1049 | { | |
1050 | } | |
3e91ea2a | 1051 | |
3a764688 GM |
1052 | static void |
1053 | NetSetPgrp(fd) /* MSDOS */ | |
1054 | int fd; | |
1055 | { | |
1056 | } | |
3e91ea2a | 1057 | |
3e91ea2a | 1058 | |
3a764688 | 1059 | #endif /* defined(MSDOS) */ |
3e91ea2a | 1060 | \f |
0d3c45d4 GM |
1061 | /* |
1062 | * Initialize variables. | |
1063 | */ | |
1064 | ||
1065 | static void | |
1066 | tninit() | |
1067 | { | |
42cf515f GM |
1068 | #if defined(TN3270) |
1069 | Sent3270TerminalType = 0; | |
0d3c45d4 | 1070 | Ifrontp = Ibackp = Ibuf; |
42cf515f GM |
1071 | #endif /* defined(TN3270) */ |
1072 | ||
0d3c45d4 GM |
1073 | tfrontp = tbackp = ttyobuf; |
1074 | nfrontp = nbackp = netobuf; | |
1075 | ||
1076 | /* Don't change telnetport */ | |
04b5f59e GM |
1077 | SB_CLEAR(); |
1078 | ClearArray(hisopts); | |
1079 | ClearArray(myopts); | |
1080 | sbp = sibuf; | |
1081 | tbp = tibuf; | |
1082 | ||
4f8919ec | 1083 | connected = net = scc = tcc = In3270 = ISend = donebinarytoggle = 0; |
04b5f59e | 1084 | telnetport = 0; |
3a764688 GM |
1085 | #if defined(unix) |
1086 | HaveInput = 0; | |
1087 | #endif /* defined(unix) */ | |
04b5f59e GM |
1088 | |
1089 | SYNCHing = 0; | |
04b5f59e | 1090 | |
04b5f59e GM |
1091 | errno = 0; |
1092 | ||
1093 | flushline = 0; | |
0d3c45d4 GM |
1094 | |
1095 | /* Don't change NetTrace */ | |
1096 | ||
1097 | escape = CONTROL(']'); | |
1098 | echoc = CONTROL('E'); | |
1099 | ||
1100 | flushline = 1; | |
1101 | sp = getservbyname("telnet", "tcp"); | |
1102 | if (sp == 0) { | |
1103 | ExitString(stderr, "telnet: tcp/telnet: unknown service\n",1); | |
1104 | /*NOTREACHED*/ | |
1105 | } | |
1106 | ||
1107 | #if defined(TN3270) | |
04b5f59e GM |
1108 | init_ctlr(); /* Initialize some things */ |
1109 | init_keyboard(); | |
1110 | init_screen(); | |
1111 | init_system(); | |
0d3c45d4 GM |
1112 | #endif /* defined(TN3270) */ |
1113 | } | |
1114 | \f | |
3e91ea2a GM |
1115 | /* |
1116 | * Various utility routines. | |
1117 | */ | |
1118 | ||
1119 | static void | |
1120 | makeargv() | |
1121 | { | |
3eb3862f GM |
1122 | register char *cp; |
1123 | register char **argp = margv; | |
3e91ea2a | 1124 | |
3eb3862f GM |
1125 | margc = 0; |
1126 | cp = line; | |
1127 | if (*cp == '!') { /* Special case shell escape */ | |
1128 | *argp++ = "!"; /* No room in string to get this */ | |
1129 | margc++; | |
1130 | cp++; | |
1131 | } | |
1132 | while (*cp) { | |
1133 | while (isspace(*cp)) | |
1134 | cp++; | |
1135 | if (*cp == '\0') | |
1136 | break; | |
1137 | *argp++ = cp; | |
1138 | margc += 1; | |
1139 | while (*cp != '\0' && !isspace(*cp)) | |
1140 | cp++; | |
1141 | if (*cp == '\0') | |
1142 | break; | |
1143 | *cp++ = '\0'; | |
1144 | } | |
1145 | *argp++ = 0; | |
3e91ea2a GM |
1146 | } |
1147 | ||
1148 | static char *ambiguous; /* special return value */ | |
1149 | #define Ambiguous(t) ((t)&ambiguous) | |
1150 | ||
1151 | ||
1152 | static char ** | |
1153 | genget(name, table, next) | |
1154 | char *name; /* name to match */ | |
1155 | char **table; /* name entry in table */ | |
1156 | char **(*next)(); /* routine to return next entry in table */ | |
1157 | { | |
1158 | register char *p, *q; | |
1159 | register char **c, **found; | |
1160 | register int nmatches, longest; | |
1161 | ||
9384854c GM |
1162 | if (name == 0) { |
1163 | return 0; | |
1164 | } | |
3e91ea2a GM |
1165 | longest = 0; |
1166 | nmatches = 0; | |
1167 | found = 0; | |
1168 | for (c = table; (p = *c) != 0; c = (*next)(c)) { | |
1169 | for (q = name; | |
1170 | (*q == *p) || (isupper(*q) && tolower(*q) == *p); p++, q++) | |
1171 | if (*q == 0) /* exact match? */ | |
1172 | return (c); | |
1173 | if (!*q) { /* the name was a prefix */ | |
1174 | if (q - name > longest) { | |
1175 | longest = q - name; | |
1176 | nmatches = 1; | |
1177 | found = c; | |
1178 | } else if (q - name == longest) | |
1179 | nmatches++; | |
1180 | } | |
1181 | } | |
1182 | if (nmatches > 1) | |
1183 | return Ambiguous(char **); | |
1184 | return (found); | |
1185 | } | |
1186 | ||
1187 | /* | |
1188 | * Make a character string into a number. | |
1189 | * | |
1190 | * Todo: 1. Could take random integers (12, 0x12, 012, 0b1). | |
1191 | */ | |
1192 | ||
1193 | static | |
1194 | special(s) | |
1195 | register char *s; | |
1196 | { | |
1197 | register char c; | |
1198 | char b; | |
1199 | ||
1200 | switch (*s) { | |
1201 | case '^': | |
1202 | b = *++s; | |
1203 | if (b == '?') { | |
1204 | c = b | 0x40; /* DEL */ | |
1205 | } else { | |
1206 | c = b & 0x1f; | |
1207 | } | |
1208 | break; | |
1209 | default: | |
1210 | c = *s; | |
1211 | break; | |
1212 | } | |
1213 | return c; | |
1214 | } | |
1215 | ||
1216 | /* | |
1217 | * Construct a control character sequence | |
1218 | * for a special character. | |
1219 | */ | |
1220 | static char * | |
1221 | control(c) | |
1222 | register int c; | |
1223 | { | |
1224 | static char buf[3]; | |
1225 | ||
1226 | if (c == 0x7f) | |
1227 | return ("^?"); | |
1228 | if (c == '\377') { | |
1229 | return "off"; | |
1230 | } | |
1231 | if (c >= 0x20) { | |
1232 | buf[0] = c; | |
1233 | buf[1] = 0; | |
1234 | } else { | |
1235 | buf[0] = '^'; | |
1236 | buf[1] = '@'+c; | |
1237 | buf[2] = 0; | |
1238 | } | |
1239 | return (buf); | |
1240 | } | |
1241 | ||
1242 | ||
1243 | /* | |
1244 | * upcase() | |
1245 | * | |
1246 | * Upcase (in place) the argument. | |
1247 | */ | |
1248 | ||
1249 | static void | |
1250 | upcase(argument) | |
1251 | register char *argument; | |
1252 | { | |
1253 | register int c; | |
1254 | ||
1255 | while ((c = *argument) != 0) { | |
1256 | if (islower(c)) { | |
1257 | *argument = toupper(c); | |
1258 | } | |
1259 | argument++; | |
1260 | } | |
1261 | } | |
3a764688 GM |
1262 | |
1263 | /* | |
1264 | * SetSockOpt() | |
1265 | * | |
1266 | * Compensate for differences in 4.2 and 4.3 systems. | |
1267 | */ | |
1268 | ||
1269 | static int | |
1270 | SetSockOpt(fd, level, option, yesno) | |
1271 | int | |
1272 | fd, | |
1273 | level, | |
1274 | option, | |
1275 | yesno; | |
1276 | { | |
1277 | #ifndef NOT43 | |
1278 | return setsockopt(fd, level, option, | |
1279 | (char *)&yesno, sizeof yesno); | |
1280 | #else /* NOT43 */ | |
1281 | if (yesno == 0) { /* Can't do that in 4.2! */ | |
1282 | fprintf(stderr, "Error: attempt to turn off an option 0x%x.\n", | |
1283 | option); | |
1284 | return -1; | |
1285 | } | |
1286 | return setsockopt(fd, level, option, 0, 0); | |
1287 | #endif /* NOT43 */ | |
1288 | } | |
3e91ea2a GM |
1289 | \f |
1290 | /* | |
1291 | * The following are routines used to print out debugging information. | |
1292 | */ | |
1293 | ||
1294 | ||
1295 | static void | |
1296 | Dump(direction, buffer, length) | |
1297 | char direction; | |
1298 | char *buffer; | |
1299 | int length; | |
1300 | { | |
1301 | # define BYTES_PER_LINE 32 | |
1302 | # define min(x,y) ((x<y)? x:y) | |
1303 | char *pThis; | |
1304 | int offset; | |
1305 | ||
1306 | offset = 0; | |
1307 | ||
1308 | while (length) { | |
1309 | /* print one line */ | |
1310 | fprintf(NetTrace, "%c 0x%x\t", direction, offset); | |
1311 | pThis = buffer; | |
1312 | buffer = buffer+min(length, BYTES_PER_LINE); | |
1313 | while (pThis < buffer) { | |
1314 | fprintf(NetTrace, "%.2x", (*pThis)&0xff); | |
1315 | pThis++; | |
1316 | } | |
1317 | fprintf(NetTrace, "\n"); | |
1318 | length -= BYTES_PER_LINE; | |
1319 | offset += BYTES_PER_LINE; | |
1320 | if (length < 0) { | |
1321 | return; | |
1322 | } | |
1323 | /* find next unique line */ | |
1324 | } | |
1325 | } | |
1326 | ||
1327 | ||
1328 | /*VARARGS*/ | |
1329 | static void | |
1330 | printoption(direction, fmt, option, what) | |
1331 | char *direction, *fmt; | |
1332 | int option, what; | |
1333 | { | |
1334 | if (!showoptions) | |
1335 | return; | |
1336 | fprintf(NetTrace, "%s ", direction+1); | |
1337 | if (fmt == doopt) | |
1338 | fmt = "do"; | |
1339 | else if (fmt == dont) | |
1340 | fmt = "dont"; | |
1341 | else if (fmt == will) | |
1342 | fmt = "will"; | |
1343 | else if (fmt == wont) | |
1344 | fmt = "wont"; | |
1345 | else | |
1346 | fmt = "???"; | |
1347 | if (option < (sizeof telopts/sizeof telopts[0])) | |
1348 | fprintf(NetTrace, "%s %s", fmt, telopts[option]); | |
1349 | else | |
1350 | fprintf(NetTrace, "%s %d", fmt, option); | |
1351 | if (*direction == '<') { | |
1352 | fprintf(NetTrace, "\r\n"); | |
1353 | return; | |
1354 | } | |
1355 | fprintf(NetTrace, " (%s)\r\n", what ? "reply" : "don't reply"); | |
1356 | } | |
1357 | ||
1358 | static void | |
1359 | printsub(direction, pointer, length) | |
1360 | char *direction, /* "<" or ">" */ | |
1361 | *pointer; /* where suboption data sits */ | |
1362 | int length; /* length of suboption data */ | |
1363 | { | |
1364 | if (showoptions) { | |
1365 | fprintf(NetTrace, "%s suboption ", | |
1366 | (direction[0] == '<')? "Received":"Sent"); | |
1367 | switch (pointer[0]) { | |
1368 | case TELOPT_TTYPE: | |
1369 | fprintf(NetTrace, "Terminal type "); | |
1370 | switch (pointer[1]) { | |
1371 | case TELQUAL_IS: | |
1372 | { | |
1373 | char tmpbuf[sizeof subbuffer]; | |
616373a8 | 1374 | int minlen = min(length-4, sizeof tmpbuf-1); |
3e91ea2a | 1375 | |
42cf515f | 1376 | memcpy(tmpbuf, pointer+2, minlen); |
616373a8 | 1377 | tmpbuf[minlen] = 0; |
3e91ea2a GM |
1378 | fprintf(NetTrace, "is %s.\n", tmpbuf); |
1379 | } | |
1380 | break; | |
1381 | case TELQUAL_SEND: | |
1382 | fprintf(NetTrace, "- request to send.\n"); | |
1383 | break; | |
1384 | default: | |
1385 | fprintf(NetTrace, | |
1386 | "- unknown qualifier %d (0x%x).\n", pointer[1]); | |
1387 | } | |
1388 | break; | |
1389 | default: | |
1390 | fprintf(NetTrace, "Unknown option %d (0x%x)\n", | |
1391 | pointer[0], pointer[0]); | |
1392 | } | |
1393 | } | |
1394 | } | |
1395 | \f | |
1396 | /* | |
1397 | * Check to see if any out-of-band data exists on a socket (for | |
1398 | * Telnet "synch" processing). | |
1399 | */ | |
1400 | ||
1401 | static int | |
1402 | stilloob(s) | |
1403 | int s; /* socket number */ | |
1404 | { | |
1405 | static struct timeval timeout = { 0 }; | |
1406 | fd_set excepts; | |
1407 | int value; | |
1408 | ||
1409 | do { | |
1410 | FD_ZERO(&excepts); | |
1411 | FD_SET(s, &excepts); | |
1412 | value = select(s+1, (fd_set *)0, (fd_set *)0, &excepts, &timeout); | |
1413 | } while ((value == -1) && (errno == EINTR)); | |
1414 | ||
1415 | if (value < 0) { | |
1416 | perror("select"); | |
1417 | quit(); | |
1418 | } | |
1419 | if (FD_ISSET(s, &excepts)) { | |
1420 | return 1; | |
1421 | } else { | |
1422 | return 0; | |
1423 | } | |
1424 | } | |
1425 | ||
1426 | ||
1427 | /* | |
1428 | * netflush | |
1429 | * Send as much data as possible to the network, | |
1430 | * handling requests for urgent data. | |
1431 | * | |
1432 | * The return value indicates whether we did any | |
1433 | * useful work. | |
1434 | */ | |
1435 | ||
1436 | ||
1437 | int | |
1438 | netflush() | |
1439 | { | |
1440 | int n; | |
1441 | ||
1442 | if ((n = nfrontp - nbackp) > 0) { | |
1443 | if (!neturg) { | |
42cf515f | 1444 | n = send(net, nbackp, n, 0); /* normal write */ |
3e91ea2a GM |
1445 | } else { |
1446 | n = neturg - nbackp; | |
1447 | /* | |
1448 | * In 4.2 (and 4.3) systems, there is some question about | |
1449 | * what byte in a sendOOB operation is the "OOB" data. | |
1450 | * To make ourselves compatible, we only send ONE byte | |
1451 | * out of band, the one WE THINK should be OOB (though | |
1452 | * we really have more the TCP philosophy of urgent data | |
1453 | * rather than the Unix philosophy of OOB data). | |
1454 | */ | |
1455 | if (n > 1) { | |
1456 | n = send(net, nbackp, n-1, 0); /* send URGENT all by itself */ | |
1457 | } else { | |
1458 | n = send(net, nbackp, n, MSG_OOB); /* URGENT data */ | |
1459 | } | |
1460 | } | |
1461 | } | |
1462 | if (n < 0) { | |
1463 | if (errno != ENOBUFS && errno != EWOULDBLOCK) { | |
1464 | setcommandmode(); | |
1465 | perror(hostname); | |
42cf515f | 1466 | NetClose(net); |
3e91ea2a GM |
1467 | neturg = 0; |
1468 | longjmp(peerdied, -1); | |
1469 | /*NOTREACHED*/ | |
1470 | } | |
1471 | n = 0; | |
1472 | } | |
1473 | if (netdata && n) { | |
1474 | Dump('>', nbackp, n); | |
1475 | } | |
1476 | nbackp += n; | |
1477 | if (nbackp >= neturg) { | |
1478 | neturg = 0; | |
1479 | } | |
1480 | if (nbackp == nfrontp) { | |
1481 | nbackp = nfrontp = netobuf; | |
1482 | } | |
1483 | return n > 0; | |
1484 | } | |
1485 | \f | |
1486 | /* | |
1487 | * nextitem() | |
1488 | * | |
1489 | * Return the address of the next "item" in the TELNET data | |
1490 | * stream. This will be the address of the next character if | |
1491 | * the current address is a user data character, or it will | |
1492 | * be the address of the character following the TELNET command | |
1493 | * if the current address is a TELNET IAC ("I Am a Command") | |
1494 | * character. | |
1495 | */ | |
1496 | ||
1497 | static char * | |
1498 | nextitem(current) | |
1499 | char *current; | |
1500 | { | |
1501 | if ((*current&0xff) != IAC) { | |
1502 | return current+1; | |
1503 | } | |
1504 | switch (*(current+1)&0xff) { | |
1505 | case DO: | |
1506 | case DONT: | |
1507 | case WILL: | |
1508 | case WONT: | |
1509 | return current+3; | |
1510 | case SB: /* loop forever looking for the SE */ | |
1511 | { | |
1512 | register char *look = current+2; | |
1513 | ||
1514 | for (;;) { | |
1515 | if ((*look++&0xff) == IAC) { | |
1516 | if ((*look++&0xff) == SE) { | |
1517 | return look; | |
1518 | } | |
1519 | } | |
1520 | } | |
1521 | } | |
1522 | default: | |
1523 | return current+2; | |
1524 | } | |
1525 | } | |
1526 | /* | |
1527 | * netclear() | |
1528 | * | |
1529 | * We are about to do a TELNET SYNCH operation. Clear | |
1530 | * the path to the network. | |
1531 | * | |
1532 | * Things are a bit tricky since we may have sent the first | |
1533 | * byte or so of a previous TELNET command into the network. | |
1534 | * So, we have to scan the network buffer from the beginning | |
1535 | * until we are up to where we want to be. | |
1536 | * | |
1537 | * A side effect of what we do, just to keep things | |
1538 | * simple, is to clear the urgent data pointer. The principal | |
1539 | * caller should be setting the urgent data pointer AFTER calling | |
1540 | * us in any case. | |
1541 | */ | |
1542 | ||
1543 | static void | |
1544 | netclear() | |
1545 | { | |
1546 | register char *thisitem, *next; | |
1547 | char *good; | |
1548 | #define wewant(p) ((nfrontp > p) && ((*p&0xff) == IAC) && \ | |
1549 | ((*(p+1)&0xff) != EC) && ((*(p+1)&0xff) != EL)) | |
1550 | ||
1551 | thisitem = netobuf; | |
1552 | ||
1553 | while ((next = nextitem(thisitem)) <= nbackp) { | |
1554 | thisitem = next; | |
1555 | } | |
1556 | ||
1557 | /* Now, thisitem is first before/at boundary. */ | |
1558 | ||
1559 | good = netobuf; /* where the good bytes go */ | |
1560 | ||
1561 | while (nfrontp > thisitem) { | |
1562 | if (wewant(thisitem)) { | |
1563 | int length; | |
1564 | ||
1565 | next = thisitem; | |
1566 | do { | |
1567 | next = nextitem(next); | |
1568 | } while (wewant(next) && (nfrontp > next)); | |
1569 | length = next-thisitem; | |
42cf515f | 1570 | memcpy(good, thisitem, length); |
3e91ea2a GM |
1571 | good += length; |
1572 | thisitem = next; | |
1573 | } else { | |
1574 | thisitem = nextitem(thisitem); | |
1575 | } | |
1576 | } | |
1577 | ||
1578 | nbackp = netobuf; | |
1579 | nfrontp = good; /* next byte to be sent */ | |
1580 | neturg = 0; | |
1581 | } | |
1582 | \f | |
1583 | /* | |
1584 | * These routines add various telnet commands to the data stream. | |
1585 | */ | |
1586 | ||
1587 | #if defined(NOT43) | |
1588 | static int | |
1589 | #else /* defined(NOT43) */ | |
1590 | static void | |
1591 | #endif /* defined(NOT43) */ | |
1592 | dosynch() | |
1593 | { | |
1594 | netclear(); /* clear the path to the network */ | |
1595 | NET2ADD(IAC, DM); | |
1596 | neturg = NETLOC()-1; /* Some systems are off by one XXX */ | |
1597 | ||
1598 | #if defined(NOT43) | |
1599 | return 0; | |
1600 | #endif /* defined(NOT43) */ | |
1601 | } | |
1602 | ||
1603 | static void | |
1604 | doflush() | |
1605 | { | |
1606 | NET2ADD(IAC, DO); | |
1607 | NETADD(TELOPT_TM); | |
1608 | flushline = 1; | |
1609 | flushout = 1; | |
1610 | ttyflush(); | |
1611 | /* do printoption AFTER flush, otherwise the output gets tossed... */ | |
1612 | printoption("<SENT", doopt, TELOPT_TM, 0); | |
1613 | } | |
1614 | ||
1615 | static void | |
1616 | intp() | |
1617 | { | |
1618 | NET2ADD(IAC, IP); | |
1619 | if (autoflush) { | |
1620 | doflush(); | |
1621 | } | |
1622 | if (autosynch) { | |
1623 | dosynch(); | |
1624 | } | |
1625 | } | |
1626 | ||
1627 | static void | |
1628 | sendbrk() | |
1629 | { | |
1630 | NET2ADD(IAC, BREAK); | |
1631 | if (autoflush) { | |
1632 | doflush(); | |
1633 | } | |
1634 | if (autosynch) { | |
1635 | dosynch(); | |
1636 | } | |
1637 | } | |
1638 | \f | |
1639 | /* | |
1640 | * Send as much data as possible to the terminal. | |
1641 | * | |
1642 | * The return value indicates whether we did any | |
1643 | * useful work. | |
1644 | */ | |
1645 | ||
1646 | ||
1647 | static int | |
1648 | ttyflush() | |
1649 | { | |
1650 | int n; | |
1651 | ||
1652 | if ((n = tfrontp - tbackp) > 0) { | |
1653 | if (!(SYNCHing||flushout)) { | |
42cf515f | 1654 | n = TerminalWrite(tout, tbackp, n); |
3e91ea2a | 1655 | } else { |
3a764688 | 1656 | TerminalFlushOutput(); |
3e91ea2a GM |
1657 | /* we leave 'n' alone! */ |
1658 | } | |
1659 | } | |
1660 | if (n >= 0) { | |
1661 | tbackp += n; | |
1662 | if (tbackp == tfrontp) { | |
1663 | tbackp = tfrontp = ttyobuf; | |
1664 | } | |
1665 | } | |
1666 | return n > 0; | |
1667 | } | |
1668 | ||
1669 | #if defined(TN3270) | |
1670 | ||
1671 | #if defined(unix) | |
1672 | static void | |
1673 | inputAvailable() | |
1674 | { | |
1675 | HaveInput = 1; | |
1676 | } | |
1677 | #endif /* defined(unix) */ | |
1678 | ||
1679 | void | |
1680 | outputPurge() | |
1681 | { | |
1682 | int tmp = flushout; | |
1683 | ||
1684 | flushout = 1; | |
1685 | ||
1686 | ttyflush(); | |
1687 | ||
1688 | flushout = tmp; | |
1689 | } | |
1690 | ||
1691 | #endif /* defined(TN3270) */ | |
1692 | \f | |
1693 | #if defined(unix) | |
1694 | /* | |
1695 | * Various signal handling routines. | |
1696 | */ | |
1697 | ||
1698 | static void | |
1699 | deadpeer() | |
1700 | { | |
1701 | setcommandmode(); | |
1702 | longjmp(peerdied, -1); | |
1703 | } | |
1704 | ||
1705 | static void | |
1706 | intr() | |
1707 | { | |
1708 | if (localchars) { | |
1709 | intp(); | |
1710 | return; | |
1711 | } | |
1712 | setcommandmode(); | |
1713 | longjmp(toplevel, -1); | |
1714 | } | |
1715 | ||
1716 | static void | |
1717 | intr2() | |
1718 | { | |
1719 | if (localchars) { | |
1720 | sendbrk(); | |
1721 | return; | |
1722 | } | |
1723 | } | |
1724 | ||
1725 | static void | |
1726 | doescape() | |
1727 | { | |
1728 | command(0); | |
1729 | } | |
1730 | #endif /* defined(unix) */ | |
1731 | \f | |
3e91ea2a GM |
1732 | /* |
1733 | * These routines decides on what the mode should be (based on the values | |
1734 | * of various global variables). | |
1735 | */ | |
1736 | ||
1737 | ||
1738 | static | |
1739 | getconnmode() | |
1740 | { | |
1741 | static char newmode[16] = | |
1742 | { 4, 5, 3, 3, 2, 2, 1, 1, 6, 6, 6, 6, 6, 6, 6, 6 }; | |
1743 | int modeindex = 0; | |
1744 | ||
1745 | if (dontlecho && (clocks.echotoggle > clocks.modenegotiated)) { | |
1746 | modeindex += 1; | |
1747 | } | |
1748 | if (hisopts[TELOPT_ECHO]) { | |
1749 | modeindex += 2; | |
1750 | } | |
1751 | if (hisopts[TELOPT_SGA]) { | |
1752 | modeindex += 4; | |
1753 | } | |
1754 | if (In3270) { | |
1755 | modeindex += 8; | |
1756 | } | |
1757 | return newmode[modeindex]; | |
1758 | } | |
1759 | ||
1760 | void | |
1761 | setconnmode() | |
1762 | { | |
3a764688 | 1763 | TerminalNewMode(getconnmode()); |
3e91ea2a GM |
1764 | } |
1765 | ||
1766 | ||
1767 | void | |
1768 | setcommandmode() | |
1769 | { | |
3a764688 | 1770 | TerminalNewMode(0); |
3e91ea2a GM |
1771 | } |
1772 | \f | |
1773 | static void | |
1774 | willoption(option, reply) | |
1775 | int option, reply; | |
1776 | { | |
1777 | char *fmt; | |
1778 | ||
1779 | switch (option) { | |
1780 | ||
de7a7ce6 | 1781 | case TELOPT_ECHO: |
3e91ea2a | 1782 | # if defined(TN3270) |
de7a7ce6 GM |
1783 | /* |
1784 | * The following is a pain in the rear-end. | |
1785 | * Various IBM servers (some versions of Wiscnet, | |
1786 | * possibly Fibronics/Spartacus, and who knows who | |
1787 | * else) will NOT allow us to send "DO SGA" too early | |
1788 | * in the setup proceedings. On the other hand, | |
1789 | * 4.2 servers (telnetd) won't set SGA correctly. | |
1790 | * So, we are stuck. Empirically (but, based on | |
1791 | * a VERY small sample), the IBM servers don't send | |
1792 | * out anything about ECHO, so we postpone our sending | |
1793 | * "DO SGA" until we see "WILL ECHO" (which 4.2 servers | |
1794 | * DO send). | |
1795 | */ | |
1796 | { | |
de7a7ce6 GM |
1797 | if (askedSGA == 0) { |
1798 | askedSGA = 1; | |
1799 | if (!hisopts[TELOPT_SGA]) { | |
1800 | willoption(TELOPT_SGA, 0); | |
1801 | } | |
1802 | } | |
1803 | } | |
1804 | /* Fall through */ | |
3e91ea2a GM |
1805 | case TELOPT_EOR: |
1806 | case TELOPT_BINARY: | |
1807 | #endif /* defined(TN3270) */ | |
3e91ea2a GM |
1808 | case TELOPT_SGA: |
1809 | settimer(modenegotiated); | |
1810 | hisopts[option] = 1; | |
1811 | fmt = doopt; | |
1812 | setconnmode(); /* possibly set new tty mode */ | |
1813 | break; | |
1814 | ||
1815 | case TELOPT_TM: | |
1816 | return; /* Never reply to TM will's/wont's */ | |
1817 | ||
1818 | default: | |
1819 | fmt = dont; | |
1820 | break; | |
1821 | } | |
1822 | sprintf(nfrontp, fmt, option); | |
1823 | nfrontp += sizeof (dont) - 2; | |
1824 | if (reply) | |
1825 | printoption(">SENT", fmt, option, reply); | |
1826 | else | |
1827 | printoption("<SENT", fmt, option, reply); | |
1828 | } | |
1829 | ||
1830 | static void | |
1831 | wontoption(option, reply) | |
1832 | int option, reply; | |
1833 | { | |
1834 | char *fmt; | |
1835 | ||
1836 | switch (option) { | |
1837 | ||
1838 | case TELOPT_ECHO: | |
1839 | case TELOPT_SGA: | |
1840 | settimer(modenegotiated); | |
1841 | hisopts[option] = 0; | |
1842 | fmt = dont; | |
1843 | setconnmode(); /* Set new tty mode */ | |
1844 | break; | |
1845 | ||
1846 | case TELOPT_TM: | |
1847 | return; /* Never reply to TM will's/wont's */ | |
1848 | ||
1849 | default: | |
1850 | fmt = dont; | |
f587ced0 GM |
1851 | hisopts[option] = 0; |
1852 | break; | |
3e91ea2a GM |
1853 | } |
1854 | sprintf(nfrontp, fmt, option); | |
1855 | nfrontp += sizeof (doopt) - 2; | |
1856 | if (reply) | |
1857 | printoption(">SENT", fmt, option, reply); | |
1858 | else | |
1859 | printoption("<SENT", fmt, option, reply); | |
1860 | } | |
1861 | ||
1862 | static void | |
1863 | dooption(option) | |
1864 | int option; | |
1865 | { | |
1866 | char *fmt; | |
1867 | ||
1868 | switch (option) { | |
1869 | ||
1870 | case TELOPT_TM: | |
1871 | fmt = will; | |
1872 | break; | |
1873 | ||
1874 | # if defined(TN3270) | |
1875 | case TELOPT_EOR: | |
1876 | case TELOPT_BINARY: | |
1877 | # endif /* defined(TN3270) */ | |
1878 | case TELOPT_TTYPE: /* terminal type option */ | |
1879 | case TELOPT_SGA: /* no big deal */ | |
1880 | fmt = will; | |
1881 | myopts[option] = 1; | |
1882 | break; | |
1883 | ||
1884 | case TELOPT_ECHO: /* We're never going to echo... */ | |
1885 | default: | |
1886 | fmt = wont; | |
1887 | break; | |
1888 | } | |
1889 | sprintf(nfrontp, fmt, option); | |
1890 | nfrontp += sizeof (doopt) - 2; | |
1891 | printoption(">SENT", fmt, option, 0); | |
1892 | } | |
1893 | ||
1894 | /* | |
1895 | * suboption() | |
1896 | * | |
1897 | * Look at the sub-option buffer, and try to be helpful to the other | |
1898 | * side. | |
1899 | * | |
1900 | * Currently we recognize: | |
1901 | * | |
1902 | * Terminal type, send request. | |
1903 | */ | |
1904 | ||
1905 | static void | |
1906 | suboption() | |
1907 | { | |
1908 | printsub("<", subbuffer, subend-subbuffer+1); | |
1909 | switch (subbuffer[0]&0xff) { | |
1910 | case TELOPT_TTYPE: | |
1911 | if ((subbuffer[1]&0xff) != TELQUAL_SEND) { | |
1912 | ; | |
1913 | } else { | |
1914 | char *name; | |
1915 | char namebuf[41]; | |
1916 | extern char *getenv(); | |
1917 | int len; | |
1918 | ||
1919 | #if defined(TN3270) | |
1920 | /* | |
0d3c45d4 | 1921 | * Try to send a 3270 type terminal name. Decide which one based |
3e91ea2a GM |
1922 | * on the format of our screen, and (in the future) color |
1923 | * capaiblities. | |
1924 | */ | |
3a764688 | 1925 | #if defined(unix) |
42cf515f GM |
1926 | if (initscr() != ERR) { /* Initialize curses to get line size */ |
1927 | MaxNumberLines = LINES; | |
1928 | MaxNumberColumns = COLS; | |
1929 | } | |
1930 | #else /* defined(unix) */ | |
1931 | InitTerminal(); | |
1932 | #endif /* defined(unix) */ | |
1933 | if ((MaxNumberLines >= 24) && (MaxNumberColumns >= 80)) { | |
3e91ea2a | 1934 | Sent3270TerminalType = 1; |
42cf515f | 1935 | if ((MaxNumberLines >= 27) && (MaxNumberColumns >= 132)) { |
3e91ea2a GM |
1936 | MaxNumberLines = 27; |
1937 | MaxNumberColumns = 132; | |
1938 | sb_terminal[SBTERMMODEL] = '5'; | |
42cf515f | 1939 | } else if (MaxNumberLines >= 43) { |
3e91ea2a GM |
1940 | MaxNumberLines = 43; |
1941 | MaxNumberColumns = 80; | |
1942 | sb_terminal[SBTERMMODEL] = '4'; | |
42cf515f | 1943 | } else if (MaxNumberLines >= 32) { |
3e91ea2a GM |
1944 | MaxNumberLines = 32; |
1945 | MaxNumberColumns = 80; | |
1946 | sb_terminal[SBTERMMODEL] = '3'; | |
1947 | } else { | |
1948 | MaxNumberLines = 24; | |
1949 | MaxNumberColumns = 80; | |
1950 | sb_terminal[SBTERMMODEL] = '2'; | |
1951 | } | |
1952 | NumberLines = 24; /* before we start out... */ | |
1953 | NumberColumns = 80; | |
1954 | ScreenSize = NumberLines*NumberColumns; | |
1955 | if ((MaxNumberLines*MaxNumberColumns) > MAXSCREENSIZE) { | |
1956 | ExitString(stderr, | |
1957 | "Programming error: MAXSCREENSIZE too small.\n", 1); | |
1958 | /*NOTREACHED*/ | |
1959 | } | |
42cf515f | 1960 | memcpy(nfrontp, sb_terminal, sizeof sb_terminal); |
3e91ea2a GM |
1961 | printsub(">", nfrontp+2, sizeof sb_terminal-2); |
1962 | nfrontp += sizeof sb_terminal; | |
1963 | return; | |
1964 | } | |
1965 | #endif /* defined(TN3270) */ | |
1966 | ||
1967 | name = getenv("TERM"); | |
1968 | if ((name == 0) || ((len = strlen(name)) > 40)) { | |
1969 | name = "UNKNOWN"; | |
1970 | } | |
1971 | if ((len + 4+2) < NETROOM()) { | |
1972 | strcpy(namebuf, name); | |
1973 | upcase(namebuf); | |
1974 | sprintf(nfrontp, "%c%c%c%c%s%c%c", IAC, SB, TELOPT_TTYPE, | |
1975 | TELQUAL_IS, namebuf, IAC, SE); | |
1976 | printsub(">", nfrontp+2, 4+strlen(namebuf)+2-2-2); | |
1977 | nfrontp += 4+strlen(namebuf)+2; | |
1978 | } else { | |
1979 | ExitString(stderr, "No room in buffer for terminal type.\n", | |
1980 | 1); | |
1981 | /*NOTREACHED*/ | |
1982 | } | |
1983 | } | |
1984 | ||
1985 | default: | |
1986 | break; | |
1987 | } | |
1988 | } | |
1989 | ||
1990 | #if defined(TN3270) | |
1991 | static void | |
1992 | SetIn3270() | |
1993 | { | |
1994 | if (Sent3270TerminalType && myopts[TELOPT_BINARY] | |
4f8919ec | 1995 | && hisopts[TELOPT_BINARY] && !donebinarytoggle) { |
3e91ea2a GM |
1996 | if (!In3270) { |
1997 | In3270 = 1; | |
0d3c45d4 | 1998 | Init3270(); /* Initialize 3270 functions */ |
3e91ea2a | 1999 | /* initialize terminal key mapping */ |
0d3c45d4 | 2000 | InitTerminal(); /* Start terminal going */ |
f587ced0 | 2001 | LocalClearScreen(); /* Make sure the screen is clear */ |
3e91ea2a GM |
2002 | setconnmode(); |
2003 | } | |
2004 | } else { | |
2005 | if (In3270) { | |
2006 | StopScreen(1); | |
2007 | In3270 = 0; | |
3eb3862f | 2008 | Stop3270(); /* Tell 3270 we aren't here anymore */ |
3e91ea2a GM |
2009 | setconnmode(); |
2010 | } | |
2011 | } | |
2012 | } | |
2013 | #endif /* defined(TN3270) */ | |
2014 | \f | |
3e91ea2a GM |
2015 | |
2016 | static void | |
2017 | telrcv() | |
2018 | { | |
2019 | register int c; | |
04b5f59e | 2020 | static int telrcv_state = TS_DATA; |
3e91ea2a GM |
2021 | # if defined(TN3270) |
2022 | register int Scc; | |
2023 | register char *Sbp; | |
2024 | # endif /* defined(TN3270) */ | |
2025 | ||
2026 | while ((scc > 0) && (TTYROOM() > 2)) { | |
2027 | c = *sbp++ & 0xff, scc--; | |
04b5f59e | 2028 | switch (telrcv_state) { |
3e91ea2a GM |
2029 | |
2030 | case TS_CR: | |
04b5f59e | 2031 | telrcv_state = TS_DATA; |
3e91ea2a GM |
2032 | if (c == '\0') { |
2033 | break; /* Ignore \0 after CR */ | |
2034 | } else if (c == '\n') { | |
2035 | if (hisopts[TELOPT_ECHO] && !crmod) { | |
2036 | TTYADD(c); | |
2037 | } | |
2038 | break; | |
2039 | } | |
2040 | /* Else, fall through */ | |
2041 | ||
2042 | case TS_DATA: | |
2043 | if (c == IAC) { | |
04b5f59e | 2044 | telrcv_state = TS_IAC; |
3e91ea2a GM |
2045 | continue; |
2046 | } | |
2047 | # if defined(TN3270) | |
2048 | if (In3270) { | |
2049 | *Ifrontp++ = c; | |
2050 | Sbp = sbp; | |
2051 | Scc = scc; | |
2052 | while (Scc > 0) { | |
2053 | c = *Sbp++ & 0377, Scc--; | |
2054 | if (c == IAC) { | |
04b5f59e | 2055 | telrcv_state = TS_IAC; |
3e91ea2a GM |
2056 | break; |
2057 | } | |
2058 | *Ifrontp++ = c; | |
2059 | } | |
2060 | sbp = Sbp; | |
2061 | scc = Scc; | |
2062 | } else | |
2063 | # endif /* defined(TN3270) */ | |
2064 | /* | |
2065 | * The 'crmod' hack (see following) is needed | |
2066 | * since we can't * set CRMOD on output only. | |
2067 | * Machines like MULTICS like to send \r without | |
2068 | * \n; since we must turn off CRMOD to get proper | |
2069 | * input, the mapping is done here (sigh). | |
2070 | */ | |
1cb0a406 | 2071 | if ((c == '\r') && !hisopts[TELOPT_BINARY]) { |
3e91ea2a GM |
2072 | if (scc > 0) { |
2073 | c = *sbp&0xff; | |
2074 | if (c == 0) { | |
2075 | sbp++, scc--; | |
2076 | /* a "true" CR */ | |
2077 | TTYADD('\r'); | |
2078 | } else if (!hisopts[TELOPT_ECHO] && | |
2079 | (c == '\n')) { | |
2080 | sbp++, scc--; | |
2081 | TTYADD('\n'); | |
2082 | } else { | |
2083 | TTYADD('\r'); | |
2084 | if (crmod) { | |
2085 | TTYADD('\n'); | |
2086 | } | |
2087 | } | |
2088 | } else { | |
04b5f59e | 2089 | telrcv_state = TS_CR; |
3e91ea2a GM |
2090 | TTYADD('\r'); |
2091 | if (crmod) { | |
2092 | TTYADD('\n'); | |
2093 | } | |
2094 | } | |
2095 | } else { | |
2096 | TTYADD(c); | |
2097 | } | |
2098 | continue; | |
2099 | ||
2100 | case TS_IAC: | |
2101 | switch (c) { | |
2102 | ||
2103 | case WILL: | |
04b5f59e | 2104 | telrcv_state = TS_WILL; |
3e91ea2a GM |
2105 | continue; |
2106 | ||
2107 | case WONT: | |
04b5f59e | 2108 | telrcv_state = TS_WONT; |
3e91ea2a GM |
2109 | continue; |
2110 | ||
2111 | case DO: | |
04b5f59e | 2112 | telrcv_state = TS_DO; |
3e91ea2a GM |
2113 | continue; |
2114 | ||
2115 | case DONT: | |
04b5f59e | 2116 | telrcv_state = TS_DONT; |
3e91ea2a GM |
2117 | continue; |
2118 | ||
2119 | case DM: | |
2120 | /* | |
2121 | * We may have missed an urgent notification, | |
2122 | * so make sure we flush whatever is in the | |
2123 | * buffer currently. | |
2124 | */ | |
2125 | SYNCHing = 1; | |
2126 | ttyflush(); | |
2127 | SYNCHing = stilloob(net); | |
2128 | settimer(gotDM); | |
2129 | break; | |
2130 | ||
2131 | case NOP: | |
2132 | case GA: | |
2133 | break; | |
2134 | ||
2135 | case SB: | |
2136 | SB_CLEAR(); | |
04b5f59e | 2137 | telrcv_state = TS_SB; |
3e91ea2a GM |
2138 | continue; |
2139 | ||
2140 | # if defined(TN3270) | |
2141 | case EOR: | |
2142 | if (In3270) { | |
2143 | Ibackp += DataFromNetwork(Ibackp, Ifrontp-Ibackp, 1); | |
2144 | if (Ibackp == Ifrontp) { | |
2145 | Ibackp = Ifrontp = Ibuf; | |
2146 | ISend = 0; /* should have been! */ | |
2147 | } else { | |
2148 | ISend = 1; | |
2149 | } | |
2150 | } | |
2151 | break; | |
2152 | # endif /* defined(TN3270) */ | |
2153 | ||
2154 | case IAC: | |
2155 | # if !defined(TN3270) | |
2156 | TTYADD(IAC); | |
2157 | # else /* !defined(TN3270) */ | |
2158 | if (In3270) { | |
2159 | *Ifrontp++ = IAC; | |
2160 | } else { | |
2161 | TTYADD(IAC); | |
2162 | } | |
2163 | # endif /* !defined(TN3270) */ | |
2164 | break; | |
2165 | ||
2166 | default: | |
2167 | break; | |
2168 | } | |
04b5f59e | 2169 | telrcv_state = TS_DATA; |
3e91ea2a GM |
2170 | continue; |
2171 | ||
2172 | case TS_WILL: | |
2173 | printoption(">RCVD", will, c, !hisopts[c]); | |
2174 | if (c == TELOPT_TM) { | |
2175 | if (flushout) { | |
2176 | flushout = 0; | |
2177 | } | |
2178 | } else if (!hisopts[c]) { | |
2179 | willoption(c, 1); | |
2180 | } | |
2181 | SetIn3270(); | |
04b5f59e | 2182 | telrcv_state = TS_DATA; |
3e91ea2a GM |
2183 | continue; |
2184 | ||
2185 | case TS_WONT: | |
2186 | printoption(">RCVD", wont, c, hisopts[c]); | |
2187 | if (c == TELOPT_TM) { | |
2188 | if (flushout) { | |
2189 | flushout = 0; | |
2190 | } | |
2191 | } else if (hisopts[c]) { | |
2192 | wontoption(c, 1); | |
2193 | } | |
2194 | SetIn3270(); | |
04b5f59e | 2195 | telrcv_state = TS_DATA; |
3e91ea2a GM |
2196 | continue; |
2197 | ||
2198 | case TS_DO: | |
2199 | printoption(">RCVD", doopt, c, !myopts[c]); | |
2200 | if (!myopts[c]) | |
2201 | dooption(c); | |
2202 | SetIn3270(); | |
04b5f59e | 2203 | telrcv_state = TS_DATA; |
3e91ea2a GM |
2204 | continue; |
2205 | ||
2206 | case TS_DONT: | |
2207 | printoption(">RCVD", dont, c, myopts[c]); | |
2208 | if (myopts[c]) { | |
2209 | myopts[c] = 0; | |
2210 | sprintf(nfrontp, wont, c); | |
2211 | nfrontp += sizeof (wont) - 2; | |
2212 | flushline = 1; | |
2213 | setconnmode(); /* set new tty mode (maybe) */ | |
2214 | printoption(">SENT", wont, c, 0); | |
2215 | } | |
2216 | SetIn3270(); | |
04b5f59e | 2217 | telrcv_state = TS_DATA; |
3e91ea2a GM |
2218 | continue; |
2219 | ||
2220 | case TS_SB: | |
2221 | if (c == IAC) { | |
04b5f59e | 2222 | telrcv_state = TS_SE; |
3e91ea2a GM |
2223 | } else { |
2224 | SB_ACCUM(c); | |
2225 | } | |
2226 | continue; | |
2227 | ||
2228 | case TS_SE: | |
2229 | if (c != SE) { | |
2230 | if (c != IAC) { | |
2231 | SB_ACCUM(IAC); | |
2232 | } | |
2233 | SB_ACCUM(c); | |
04b5f59e | 2234 | telrcv_state = TS_SB; |
3e91ea2a GM |
2235 | } else { |
2236 | SB_TERM(); | |
2237 | suboption(); /* handle sub-option */ | |
2238 | SetIn3270(); | |
04b5f59e | 2239 | telrcv_state = TS_DATA; |
3e91ea2a GM |
2240 | } |
2241 | } | |
2242 | } | |
2243 | } | |
2244 | \f | |
2245 | #if defined(TN3270) | |
2246 | ||
2247 | /* | |
2248 | * The following routines are places where the various tn3270 | |
2249 | * routines make calls into telnet.c. | |
2250 | */ | |
2251 | ||
2252 | /* TtyChars() - returns the number of characters in the TTY buffer */ | |
2253 | TtyChars() | |
2254 | { | |
2255 | return(tfrontp-tbackp); | |
2256 | } | |
2257 | ||
2258 | /* | |
2259 | * DataToNetwork - queue up some data to go to network. If "done" is set, | |
2260 | * then when last byte is queued, we add on an IAC EOR sequence (so, | |
2261 | * don't call us with "done" until you want that done...) | |
2262 | * | |
2263 | * We actually do send all the data to the network buffer, since our | |
2264 | * only client needs for us to do that. | |
2265 | */ | |
2266 | ||
2267 | int | |
2268 | DataToNetwork(buffer, count, done) | |
2269 | register char *buffer; /* where the data is */ | |
2270 | register int count; /* how much to send */ | |
2271 | int done; /* is this the last of a logical block */ | |
2272 | { | |
2273 | register int c; | |
2274 | int origCount; | |
2275 | fd_set o; | |
2276 | ||
2277 | origCount = count; | |
2278 | FD_ZERO(&o); | |
2279 | ||
2280 | while (count) { | |
2281 | if ((netobuf+sizeof netobuf - nfrontp) < 6) { | |
2282 | netflush(); | |
2283 | while ((netobuf+sizeof netobuf - nfrontp) < 6) { | |
2284 | FD_SET(net, &o); | |
2285 | (void) select(net+1, (fd_set *) 0, &o, (fd_set *) 0, | |
2286 | (struct timeval *) 0); | |
2287 | netflush(); | |
2288 | } | |
2289 | } | |
2290 | c = *buffer++; | |
2291 | count--; | |
2292 | if (c == IAC) { | |
2293 | *nfrontp++ = IAC; | |
2294 | *nfrontp++ = IAC; | |
2295 | } else { | |
2296 | *nfrontp++ = c; | |
2297 | } | |
2298 | } | |
2299 | ||
2300 | if (done && !count) { | |
2301 | *nfrontp++ = IAC; | |
2302 | *nfrontp++ = EOR; | |
2303 | netflush(); /* try to move along as quickly as ... */ | |
2304 | } | |
2305 | return(origCount - count); | |
2306 | } | |
2307 | ||
2308 | /* DataToTerminal - queue up some data to go to terminal. */ | |
2309 | ||
2310 | int | |
2311 | DataToTerminal(buffer, count) | |
2312 | register char *buffer; /* where the data is */ | |
2313 | register int count; /* how much to send */ | |
2314 | { | |
2315 | int origCount; | |
42cf515f | 2316 | #if defined(unix) |
3e91ea2a GM |
2317 | fd_set o; |
2318 | ||
3e91ea2a | 2319 | FD_ZERO(&o); |
42cf515f GM |
2320 | #endif /* defined(unix) */ |
2321 | origCount = count; | |
3e91ea2a GM |
2322 | |
2323 | while (count) { | |
2324 | if (tfrontp >= ttyobuf+sizeof ttyobuf) { | |
2325 | ttyflush(); | |
2326 | while (tfrontp >= ttyobuf+sizeof ttyobuf) { | |
42cf515f | 2327 | #if defined(unix) |
3e91ea2a GM |
2328 | FD_SET(tout, &o); |
2329 | (void) select(tout+1, (fd_set *) 0, &o, (fd_set *) 0, | |
2330 | (struct timeval *) 0); | |
42cf515f | 2331 | #endif /* defined(unix) */ |
3e91ea2a GM |
2332 | ttyflush(); |
2333 | } | |
2334 | } | |
2335 | *tfrontp++ = *buffer++; | |
2336 | count--; | |
2337 | } | |
2338 | return(origCount - count); | |
2339 | } | |
2340 | ||
2341 | /* EmptyTerminal - called to make sure that the terminal buffer is empty. | |
2342 | * Note that we consider the buffer to run all the | |
2343 | * way to the kernel (thus the select). | |
2344 | */ | |
2345 | ||
2346 | void | |
2347 | EmptyTerminal() | |
2348 | { | |
42cf515f | 2349 | #if defined(unix) |
3e91ea2a GM |
2350 | fd_set o; |
2351 | ||
2352 | FD_ZERO(&o); | |
42cf515f | 2353 | #endif /* defined(unix) */ |
3e91ea2a GM |
2354 | |
2355 | if (tfrontp == tbackp) { | |
42cf515f | 2356 | #if defined(unix) |
3e91ea2a GM |
2357 | FD_SET(tout, &o); |
2358 | (void) select(tout+1, (int *) 0, &o, (int *) 0, | |
2359 | (struct timeval *) 0); /* wait for TTLOWAT */ | |
42cf515f | 2360 | #endif /* defined(unix) */ |
3e91ea2a GM |
2361 | } else { |
2362 | while (tfrontp != tbackp) { | |
2363 | ttyflush(); | |
42cf515f | 2364 | #if defined(unix) |
3e91ea2a GM |
2365 | FD_SET(tout, &o); |
2366 | (void) select(tout+1, (int *) 0, &o, (int *) 0, | |
2367 | (struct timeval *) 0); /* wait for TTLOWAT */ | |
42cf515f | 2368 | #endif /* defined(unix) */ |
3e91ea2a GM |
2369 | } |
2370 | } | |
2371 | } | |
2372 | ||
2373 | /* | |
2374 | * Push3270 - Try to send data along the 3270 output (to screen) direction. | |
2375 | */ | |
2376 | ||
2377 | static int | |
2378 | Push3270() | |
2379 | { | |
2380 | int save = scc; | |
2381 | ||
2382 | if (scc) { | |
2383 | if (Ifrontp+scc > Ibuf+sizeof Ibuf) { | |
2384 | if (Ibackp != Ibuf) { | |
42cf515f | 2385 | memcpy(Ibuf, Ibackp, Ifrontp-Ibackp); |
3e91ea2a GM |
2386 | Ifrontp -= (Ibackp-Ibuf); |
2387 | Ibackp = Ibuf; | |
2388 | } | |
2389 | } | |
2390 | if (Ifrontp+scc < Ibuf+sizeof Ibuf) { | |
2391 | telrcv(); | |
2392 | } | |
2393 | } | |
2394 | return save != scc; | |
2395 | } | |
2396 | ||
2397 | ||
2398 | /* | |
2399 | * Finish3270 - get the last dregs of 3270 data out to the terminal | |
2400 | * before quitting. | |
2401 | */ | |
2402 | ||
2403 | static void | |
2404 | Finish3270() | |
2405 | { | |
2406 | while (Push3270() || !DoTerminalOutput()) { | |
de3003f6 GM |
2407 | #if defined(unix) |
2408 | HaveInput = 0; | |
2409 | #endif /* defined(unix) */ | |
3e91ea2a GM |
2410 | ; |
2411 | } | |
2412 | } | |
2413 | ||
2414 | ||
2415 | ||
2416 | /* StringToTerminal - output a null terminated string to the terminal */ | |
2417 | ||
2418 | void | |
2419 | StringToTerminal(s) | |
2420 | char *s; | |
2421 | { | |
2422 | int count; | |
2423 | ||
2424 | count = strlen(s); | |
2425 | if (count) { | |
2426 | (void) DataToTerminal(s, count); /* we know it always goes... */ | |
2427 | } | |
2428 | } | |
2429 | ||
2430 | ||
2431 | #if defined(TN3270) && ((!defined(NOT43)) || defined(PUTCHAR)) | |
2432 | /* _putchar - output a single character to the terminal. This name is so that | |
2433 | * curses(3x) can call us to send out data. | |
2434 | */ | |
2435 | ||
2436 | void | |
2437 | _putchar(c) | |
2438 | char c; | |
2439 | { | |
2440 | if (tfrontp >= ttyobuf+sizeof ttyobuf) { | |
2441 | (void) DataToTerminal(&c, 1); | |
2442 | } else { | |
2443 | *tfrontp++ = c; /* optimize if possible. */ | |
2444 | } | |
2445 | } | |
2446 | #endif /* defined(TN3270) && ((!defined(NOT43)) || defined(PUTCHAR)) */ | |
2447 | \f | |
2448 | static void | |
2449 | SetForExit() | |
2450 | { | |
2451 | setconnmode(); | |
2452 | if (In3270) { | |
2453 | Finish3270(); | |
2454 | } | |
2455 | setcommandmode(); | |
2456 | fflush(stdout); | |
2457 | fflush(stderr); | |
2458 | if (In3270) { | |
2459 | StopScreen(1); | |
2460 | } | |
2461 | setconnmode(); | |
2462 | setcommandmode(); | |
2463 | } | |
2464 | ||
2465 | static void | |
2466 | Exit(returnCode) | |
2467 | int returnCode; | |
2468 | { | |
2469 | SetForExit(); | |
2470 | exit(returnCode); | |
2471 | } | |
2472 | ||
2473 | void | |
2474 | ExitString(file, string, returnCode) | |
2475 | FILE *file; | |
2476 | char *string; | |
2477 | int returnCode; | |
2478 | { | |
2479 | SetForExit(); | |
2480 | fwrite(string, 1, strlen(string), file); | |
2481 | exit(returnCode); | |
2482 | } | |
2483 | ||
2484 | void | |
2485 | ExitPerror(string, returnCode) | |
2486 | char *string; | |
2487 | int returnCode; | |
2488 | { | |
2489 | SetForExit(); | |
2490 | perror(string); | |
2491 | exit(returnCode); | |
2492 | } | |
2493 | ||
2494 | #endif /* defined(TN3270) */ | |
2495 | \f | |
3eb3862f GM |
2496 | /* |
2497 | * Scheduler() | |
2498 | * | |
2499 | * Try to do something. | |
2500 | * | |
2501 | * If we do something useful, return 1; else return 0. | |
2502 | * | |
2503 | */ | |
2504 | ||
2505 | ||
2506 | int | |
3e91ea2a GM |
2507 | Scheduler(block) |
2508 | int block; /* should we block in the select ? */ | |
2509 | { | |
2510 | register int c; | |
2511 | /* One wants to be a bit careful about setting returnValue | |
2512 | * to one, since a one implies we did some useful work, | |
2513 | * and therefore probably won't be called to block next | |
2514 | * time (TN3270 mode only). | |
2515 | */ | |
2516 | int returnValue = 0; | |
2517 | static struct timeval TimeValue = { 0 }; | |
2518 | ||
2519 | if (scc < 0 && tcc < 0) { | |
2520 | return -1; | |
2521 | } | |
2522 | ||
2523 | if ((!MODE_LINE(globalmode) || flushline) && NETBYTES()) { | |
2524 | FD_SET(net, &obits); | |
2525 | } | |
42cf515f | 2526 | #if !defined(MSDOS) |
3e91ea2a GM |
2527 | if (TTYBYTES()) { |
2528 | FD_SET(tout, &obits); | |
2529 | } | |
1cb0a406 | 2530 | #if defined(TN3270) |
3eb3862f | 2531 | if ((tcc == 0) && NETROOM() && (shell_active == 0)) { |
3e91ea2a GM |
2532 | FD_SET(tin, &ibits); |
2533 | } | |
1cb0a406 GM |
2534 | #else /* defined(TN3270) */ |
2535 | if ((tcc == 0) && NETROOM()) { | |
2536 | FD_SET(tin, &ibits); | |
2537 | } | |
2538 | #endif /* defined(TN3270) */ | |
42cf515f | 2539 | #endif /* !defined(MSDOS) */ |
3e91ea2a GM |
2540 | # if !defined(TN3270) |
2541 | if (TTYROOM()) { | |
2542 | FD_SET(net, &ibits); | |
2543 | } | |
2544 | # else /* !defined(TN3270) */ | |
2545 | if (!ISend && TTYROOM()) { | |
2546 | FD_SET(net, &ibits); | |
2547 | } | |
2548 | # endif /* !defined(TN3270) */ | |
2549 | if (!SYNCHing) { | |
2550 | FD_SET(net, &xbits); | |
2551 | } | |
2552 | # if defined(TN3270) && defined(unix) | |
2553 | if (HaveInput) { | |
2554 | HaveInput = 0; | |
2555 | signal(SIGIO, inputAvailable); | |
2556 | } | |
2557 | #endif /* defined(TN3270) && defined(unix) */ | |
2558 | if ((c = select(16, &ibits, &obits, &xbits, | |
42cf515f | 2559 | block? (struct timeval *)0 : &TimeValue)) < 0) { |
3e91ea2a GM |
2560 | if (c == -1) { |
2561 | /* | |
2562 | * we can get EINTR if we are in line mode, | |
2563 | * and the user does an escape (TSTP), or | |
2564 | * some other signal generator. | |
2565 | */ | |
2566 | if (errno == EINTR) { | |
2567 | return 0; | |
2568 | } | |
2569 | # if defined(TN3270) | |
2570 | /* | |
2571 | * we can get EBADF if we were in transparent | |
2572 | * mode, and the transcom process died. | |
2573 | */ | |
2574 | if (errno == EBADF) { | |
2575 | /* | |
2576 | * zero the bits (even though kernel does it) | |
2577 | * to make sure we are selecting on the right | |
2578 | * ones. | |
2579 | */ | |
2580 | FD_ZERO(&ibits); | |
2581 | FD_ZERO(&obits); | |
2582 | FD_ZERO(&xbits); | |
2583 | return 0; | |
2584 | } | |
2585 | # endif /* defined(TN3270) */ | |
2586 | /* I don't like this, does it ever happen? */ | |
2587 | printf("sleep(5) from telnet, after select\r\n"); | |
2588 | #if defined(unix) | |
2589 | sleep(5); | |
2590 | #endif /* defined(unix) */ | |
2591 | } | |
2592 | return 0; | |
2593 | } | |
2594 | ||
2595 | /* | |
2596 | * Any urgent data? | |
2597 | */ | |
2598 | if (FD_ISSET(net, &xbits)) { | |
2599 | FD_CLR(net, &xbits); | |
2600 | SYNCHing = 1; | |
2601 | ttyflush(); /* flush already enqueued data */ | |
2602 | } | |
2603 | ||
2604 | /* | |
2605 | * Something to read from the network... | |
2606 | */ | |
2607 | if (FD_ISSET(net, &ibits)) { | |
2608 | int canread; | |
2609 | ||
2610 | FD_CLR(net, &ibits); | |
2611 | if (scc == 0) { | |
2612 | sbp = sibuf; | |
2613 | } | |
9c96a9cd | 2614 | canread = sibuf + sizeof sibuf - (sbp+scc); |
3e91ea2a GM |
2615 | #if !defined(SO_OOBINLINE) |
2616 | /* | |
2617 | * In 4.2 (and some early 4.3) systems, the | |
2618 | * OOB indication and data handling in the kernel | |
2619 | * is such that if two separate TCP Urgent requests | |
2620 | * come in, one byte of TCP data will be overlaid. | |
2621 | * This is fatal for Telnet, but we try to live | |
2622 | * with it. | |
2623 | * | |
2624 | * In addition, in 4.2 (and...), a special protocol | |
2625 | * is needed to pick up the TCP Urgent data in | |
2626 | * the correct sequence. | |
2627 | * | |
2628 | * What we do is: if we think we are in urgent | |
2629 | * mode, we look to see if we are "at the mark". | |
2630 | * If we are, we do an OOB receive. If we run | |
2631 | * this twice, we will do the OOB receive twice, | |
2632 | * but the second will fail, since the second | |
2633 | * time we were "at the mark", but there wasn't | |
2634 | * any data there (the kernel doesn't reset | |
2635 | * "at the mark" until we do a normal read). | |
2636 | * Once we've read the OOB data, we go ahead | |
2637 | * and do normal reads. | |
2638 | * | |
2639 | * There is also another problem, which is that | |
2640 | * since the OOB byte we read doesn't put us | |
2641 | * out of OOB state, and since that byte is most | |
2642 | * likely the TELNET DM (data mark), we would | |
2643 | * stay in the TELNET SYNCH (SYNCHing) state. | |
2644 | * So, clocks to the rescue. If we've "just" | |
2645 | * received a DM, then we test for the | |
2646 | * presence of OOB data when the receive OOB | |
2647 | * fails (and AFTER we did the normal mode read | |
2648 | * to clear "at the mark"). | |
2649 | */ | |
2650 | if (SYNCHing) { | |
2651 | int atmark; | |
2652 | ||
2653 | ioctl(net, SIOCATMARK, (char *)&atmark); | |
2654 | if (atmark) { | |
9c96a9cd | 2655 | c = recv(net, sbp+scc, canread, MSG_OOB); |
3e91ea2a | 2656 | if ((c == -1) && (errno == EINVAL)) { |
42cf515f | 2657 | c = recv(net, sbp+scc, canread, 0); |
3e91ea2a GM |
2658 | if (clocks.didnetreceive < clocks.gotDM) { |
2659 | SYNCHing = stilloob(net); | |
2660 | } | |
2661 | } | |
2662 | } else { | |
42cf515f | 2663 | c = recv(net, sbp+scc, canread, 0); |
3e91ea2a GM |
2664 | } |
2665 | } else { | |
42cf515f | 2666 | c = recv(net, sbp+scc, canread, 0); |
3e91ea2a GM |
2667 | } |
2668 | settimer(didnetreceive); | |
2669 | #else /* !defined(SO_OOBINLINE) */ | |
42cf515f | 2670 | c = recv(net, sbp+scc, canread, 0); |
3e91ea2a GM |
2671 | #endif /* !defined(SO_OOBINLINE) */ |
2672 | if (c < 0 && errno == EWOULDBLOCK) { | |
2673 | c = 0; | |
2674 | } else if (c <= 0) { | |
2675 | return -1; | |
2676 | } | |
2677 | if (netdata) { | |
9c96a9cd | 2678 | Dump('<', sbp+scc, c); |
3e91ea2a GM |
2679 | } |
2680 | scc += c; | |
2681 | returnValue = 1; | |
2682 | } | |
2683 | ||
2684 | /* | |
2685 | * Something to read from the tty... | |
2686 | */ | |
42cf515f | 2687 | #if defined(MSDOS) |
3eb3862f | 2688 | if ((tcc == 0) && NETROOM() && (shell_active == 0) && TerminalCanRead()) |
42cf515f GM |
2689 | #else /* defined(MSDOS) */ |
2690 | if (FD_ISSET(tin, &ibits)) | |
2691 | #endif /* defined(MSDOS) */ | |
2692 | { | |
3e91ea2a GM |
2693 | FD_CLR(tin, &ibits); |
2694 | if (tcc == 0) { | |
2695 | tbp = tibuf; /* nothing left, reset */ | |
2696 | } | |
42cf515f | 2697 | c = TerminalRead(tin, tbp, tibuf+sizeof tibuf - tbp); |
3e91ea2a GM |
2698 | if (c < 0 && errno == EWOULDBLOCK) { |
2699 | c = 0; | |
2700 | } else { | |
3a764688 | 2701 | #if defined(unix) |
3e91ea2a GM |
2702 | /* EOF detection for line mode!!!! */ |
2703 | if (c == 0 && MODE_LOCAL_CHARS(globalmode)) { | |
2704 | /* must be an EOF... */ | |
2705 | *tbp = ntc.t_eofc; | |
2706 | c = 1; | |
2707 | } | |
3a764688 | 2708 | #endif /* defined(unix) */ |
3e91ea2a GM |
2709 | if (c <= 0) { |
2710 | tcc = c; | |
2711 | return -1; | |
2712 | } | |
2713 | } | |
2714 | tcc += c; | |
2715 | returnValue = 1; /* did something useful */ | |
2716 | } | |
2717 | ||
2718 | # if defined(TN3270) | |
2719 | if (tcc > 0) { | |
2720 | if (In3270) { | |
2721 | c = DataFromTerminal(tbp, tcc); | |
2722 | if (c) { | |
2723 | returnValue = 1; | |
2724 | } | |
2725 | tcc -= c; | |
2726 | tbp += c; | |
2727 | } else { | |
58f9a26f | 2728 | # endif /* defined(TN3270) */ |
3e91ea2a GM |
2729 | returnValue = 1; |
2730 | while (tcc > 0) { | |
2731 | register int sc; | |
2732 | ||
2733 | if (NETROOM() < 2) { | |
2734 | flushline = 1; | |
2735 | break; | |
2736 | } | |
2737 | c = *tbp++ & 0xff, sc = strip(c), tcc--; | |
2738 | if (sc == escape) { | |
2739 | command(0); | |
2740 | tcc = 0; | |
2741 | flushline = 1; | |
2742 | break; | |
2743 | } else if (MODE_LINE(globalmode) && (sc == echoc)) { | |
2744 | if (tcc > 0 && strip(*tbp) == echoc) { | |
2745 | tbp++; | |
2746 | tcc--; | |
2747 | } else { | |
2748 | dontlecho = !dontlecho; | |
2749 | settimer(echotoggle); | |
2750 | setconnmode(); | |
2751 | tcc = 0; | |
2752 | flushline = 1; | |
2753 | break; | |
2754 | } | |
2755 | } | |
2756 | if (localchars) { | |
42cf515f | 2757 | if (TerminalSpecialChars(sc) == 0) { |
3e91ea2a GM |
2758 | break; |
2759 | } | |
2760 | } | |
1cb0a406 GM |
2761 | if (!myopts[TELOPT_BINARY]) { |
2762 | switch (c) { | |
2763 | case '\n': | |
2764 | /* | |
2765 | * If we are in CRMOD mode (\r ==> \n) | |
2766 | * on our local machine, then probably | |
2767 | * a newline (unix) is CRLF (TELNET). | |
2768 | */ | |
2769 | if (MODE_LOCAL_CHARS(globalmode)) { | |
2770 | NETADD('\r'); | |
2771 | } | |
2772 | NETADD('\n'); | |
2773 | flushline = 1; | |
2774 | break; | |
2775 | case '\r': | |
614687b7 GM |
2776 | if (!crlf) { |
2777 | NET2ADD('\r', '\0'); | |
2778 | } else { | |
2779 | NET2ADD('\r', '\n'); | |
2780 | } | |
1cb0a406 GM |
2781 | flushline = 1; |
2782 | break; | |
2783 | case IAC: | |
2784 | NET2ADD(IAC, IAC); | |
2785 | break; | |
2786 | default: | |
2787 | NETADD(c); | |
2788 | break; | |
3e91ea2a | 2789 | } |
1cb0a406 | 2790 | } else if (c == IAC) { |
3e91ea2a | 2791 | NET2ADD(IAC, IAC); |
1cb0a406 | 2792 | } else { |
3e91ea2a | 2793 | NETADD(c); |
3e91ea2a GM |
2794 | } |
2795 | } | |
2796 | # if defined(TN3270) | |
2797 | } | |
2798 | } | |
2799 | # endif /* defined(TN3270) */ | |
2800 | ||
614687b7 | 2801 | if ((!MODE_LINE(globalmode) || flushline || myopts[TELOPT_BINARY]) && |
3e91ea2a GM |
2802 | FD_ISSET(net, &obits) && (NETBYTES() > 0)) { |
2803 | FD_CLR(net, &obits); | |
2804 | returnValue = netflush(); | |
2805 | } | |
2806 | if (scc > 0) { | |
2807 | # if !defined(TN3270) | |
2808 | telrcv(); | |
2809 | returnValue = 1; | |
2810 | # else /* !defined(TN3270) */ | |
2811 | returnValue = Push3270(); | |
2812 | # endif /* !defined(TN3270) */ | |
2813 | } | |
42cf515f GM |
2814 | #if defined(MSDOS) |
2815 | if (TTYBYTES()) | |
2816 | #else /* defined(MSDOS) */ | |
2817 | if (FD_ISSET(tout, &obits) && (TTYBYTES() > 0)) | |
2818 | #endif /* defined(MSDOS) */ | |
2819 | { | |
3e91ea2a GM |
2820 | FD_CLR(tout, &obits); |
2821 | returnValue = ttyflush(); | |
2822 | } | |
2823 | return returnValue; | |
2824 | } | |
2825 | \f | |
2826 | /* | |
2827 | * Select from tty and network... | |
2828 | */ | |
2829 | static void | |
2830 | telnet() | |
2831 | { | |
42cf515f GM |
2832 | #if defined(MSDOS) |
2833 | #define SCHED_BLOCK 0 /* Don't block in MSDOS */ | |
2834 | #else /* defined(MSDOS) */ | |
2835 | #define SCHED_BLOCK 1 | |
2836 | #endif /* defined(MSDOS) */ | |
2837 | ||
3e91ea2a GM |
2838 | #if defined(TN3270) && defined(unix) |
2839 | int myPid; | |
2840 | #endif /* defined(TN3270) */ | |
2841 | ||
2842 | tout = fileno(stdout); | |
2843 | tin = fileno(stdin); | |
2844 | setconnmode(); | |
2845 | scc = 0; | |
2846 | tcc = 0; | |
2847 | FD_ZERO(&ibits); | |
2848 | FD_ZERO(&obits); | |
2849 | FD_ZERO(&xbits); | |
2850 | ||
3a764688 | 2851 | NetNonblockingIO(net, 1); |
3e91ea2a GM |
2852 | |
2853 | #if defined(TN3270) | |
3dd51ee4 GM |
2854 | if (noasynch == 0) { /* DBX can't handle! */ |
2855 | NetSigIO(net, 1); | |
2856 | } | |
3a764688 | 2857 | NetSetPgrp(net); |
3e91ea2a GM |
2858 | #endif /* defined(TN3270) */ |
2859 | ||
3a764688 GM |
2860 | |
2861 | #if defined(SO_OOBINLINE) && !defined(MSDOS) | |
2862 | SetSockOpt(net, SOL_SOCKET, SO_OOBINLINE, 1); | |
2863 | #endif /* defined(SO_OOBINLINE) && !defined(MSDOS) */ | |
3e91ea2a | 2864 | |
58f9a26f | 2865 | # if !defined(TN3270) |
3e91ea2a GM |
2866 | if (telnetport) { |
2867 | if (!hisopts[TELOPT_SGA]) { | |
2868 | willoption(TELOPT_SGA, 0); | |
2869 | } | |
3e91ea2a GM |
2870 | if (!myopts[TELOPT_TTYPE]) { |
2871 | dooption(TELOPT_TTYPE, 0); | |
2872 | } | |
3e91ea2a | 2873 | } |
58f9a26f | 2874 | # endif /* !defined(TN3270) */ |
3e91ea2a GM |
2875 | |
2876 | # if !defined(TN3270) | |
2877 | for (;;) { | |
42cf515f | 2878 | if (Scheduler(SCHED_BLOCK) == -1) { |
3e91ea2a GM |
2879 | setcommandmode(); |
2880 | return; | |
2881 | } | |
2882 | } | |
2883 | # else /* !defined(TN3270) */ | |
2884 | for (;;) { | |
2885 | int schedValue; | |
2886 | ||
4f8919ec | 2887 | while (!In3270 && !shell_active) { |
42cf515f | 2888 | if (Scheduler(SCHED_BLOCK) == -1) { |
3e91ea2a GM |
2889 | setcommandmode(); |
2890 | return; | |
2891 | } | |
2892 | } | |
2893 | ||
2894 | while ((schedValue = Scheduler(0)) != 0) { | |
2895 | if (schedValue == -1) { | |
2896 | setcommandmode(); | |
2897 | return; | |
2898 | } | |
2899 | } | |
2900 | /* If there is data waiting to go out to terminal, don't | |
2901 | * schedule any more data for the terminal. | |
2902 | */ | |
2903 | if (tfrontp-tbackp) { | |
2904 | schedValue = 1; | |
2905 | } else { | |
3eb3862f | 2906 | if (shell_active) { |
3eb3862f GM |
2907 | if (shell_continue() == 0) { |
2908 | ConnectScreen(); | |
3eb3862f | 2909 | } |
4f8919ec | 2910 | } else if (In3270) { |
3eb3862f GM |
2911 | schedValue = DoTerminalOutput(); |
2912 | } | |
3e91ea2a | 2913 | } |
3eb3862f | 2914 | if (schedValue && (shell_active == 0)) { |
42cf515f | 2915 | if (Scheduler(SCHED_BLOCK) == -1) { |
3e91ea2a GM |
2916 | setcommandmode(); |
2917 | return; | |
2918 | } | |
2919 | } | |
2920 | } | |
2921 | # endif /* !defined(TN3270) */ | |
2922 | } | |
2923 | \f | |
2924 | /* | |
2925 | * The following are data structures and routines for | |
2926 | * the "send" command. | |
2927 | * | |
2928 | */ | |
2929 | ||
2930 | struct sendlist { | |
2931 | char *name; /* How user refers to it (case independent) */ | |
2932 | int what; /* Character to be sent (<0 ==> special) */ | |
2933 | char *help; /* Help information (0 ==> no help) */ | |
2934 | #if defined(NOT43) | |
2935 | int (*routine)(); /* Routine to perform (for special ops) */ | |
2936 | #else /* defined(NOT43) */ | |
2937 | void (*routine)(); /* Routine to perform (for special ops) */ | |
2938 | #endif /* defined(NOT43) */ | |
2939 | }; | |
2940 | \f | |
2941 | #define SENDQUESTION -1 | |
2942 | #define SENDESCAPE -3 | |
2943 | ||
2944 | static struct sendlist Sendlist[] = { | |
2945 | { "ao", AO, "Send Telnet Abort output" }, | |
2946 | { "ayt", AYT, "Send Telnet 'Are You There'" }, | |
2947 | { "brk", BREAK, "Send Telnet Break" }, | |
2948 | { "ec", EC, "Send Telnet Erase Character" }, | |
2949 | { "el", EL, "Send Telnet Erase Line" }, | |
2950 | { "escape", SENDESCAPE, "Send current escape character" }, | |
2951 | { "ga", GA, "Send Telnet 'Go Ahead' sequence" }, | |
2952 | { "ip", IP, "Send Telnet Interrupt Process" }, | |
2953 | { "nop", NOP, "Send Telnet 'No operation'" }, | |
2954 | { "synch", SYNCH, "Perform Telnet 'Synch operation'", dosynch }, | |
2955 | { "?", SENDQUESTION, "Display send options" }, | |
2956 | { 0 } | |
2957 | }; | |
2958 | ||
2959 | static struct sendlist Sendlist2[] = { /* some synonyms */ | |
2960 | { "break", BREAK, 0 }, | |
2961 | ||
2962 | { "intp", IP, 0 }, | |
2963 | { "interrupt", IP, 0 }, | |
2964 | { "intr", IP, 0 }, | |
2965 | ||
2966 | { "help", SENDQUESTION, 0 }, | |
2967 | ||
2968 | { 0 } | |
2969 | }; | |
2970 | ||
2971 | static char ** | |
2972 | getnextsend(name) | |
2973 | char *name; | |
2974 | { | |
2975 | struct sendlist *c = (struct sendlist *) name; | |
2976 | ||
2977 | return (char **) (c+1); | |
2978 | } | |
2979 | ||
2980 | static struct sendlist * | |
2981 | getsend(name) | |
2982 | char *name; | |
2983 | { | |
2984 | struct sendlist *sl; | |
2985 | ||
2986 | if ((sl = (struct sendlist *) | |
2987 | genget(name, (char **) Sendlist, getnextsend)) != 0) { | |
2988 | return sl; | |
2989 | } else { | |
2990 | return (struct sendlist *) | |
2991 | genget(name, (char **) Sendlist2, getnextsend); | |
2992 | } | |
2993 | } | |
2994 | ||
2995 | static | |
2996 | sendcmd(argc, argv) | |
2997 | int argc; | |
2998 | char **argv; | |
2999 | { | |
3000 | int what; /* what we are sending this time */ | |
3001 | int count; /* how many bytes we are going to need to send */ | |
3002 | int i; | |
3003 | int question = 0; /* was at least one argument a question */ | |
3004 | struct sendlist *s; /* pointer to current command */ | |
3005 | ||
3006 | if (argc < 2) { | |
3007 | printf("need at least one argument for 'send' command\n"); | |
3008 | printf("'send ?' for help\n"); | |
3009 | return 0; | |
3010 | } | |
3011 | /* | |
3012 | * First, validate all the send arguments. | |
3013 | * In addition, we see how much space we are going to need, and | |
3014 | * whether or not we will be doing a "SYNCH" operation (which | |
3015 | * flushes the network queue). | |
3016 | */ | |
3017 | count = 0; | |
3018 | for (i = 1; i < argc; i++) { | |
3019 | s = getsend(argv[i]); | |
3020 | if (s == 0) { | |
3021 | printf("Unknown send argument '%s'\n'send ?' for help.\n", | |
3022 | argv[i]); | |
3023 | return 0; | |
3024 | } else if (s == Ambiguous(struct sendlist *)) { | |
3025 | printf("Ambiguous send argument '%s'\n'send ?' for help.\n", | |
3026 | argv[i]); | |
3027 | return 0; | |
3028 | } | |
3029 | switch (s->what) { | |
3030 | case SENDQUESTION: | |
3031 | break; | |
3032 | case SENDESCAPE: | |
3033 | count += 1; | |
3034 | break; | |
3035 | case SYNCH: | |
3036 | count += 2; | |
3037 | break; | |
3038 | default: | |
3039 | count += 2; | |
3040 | break; | |
3041 | } | |
3042 | } | |
3043 | /* Now, do we have enough room? */ | |
3044 | if (NETROOM() < count) { | |
3045 | printf("There is not enough room in the buffer TO the network\n"); | |
3046 | printf("to process your request. Nothing will be done.\n"); | |
3047 | printf("('send synch' will throw away most data in the network\n"); | |
3048 | printf("buffer, if this might help.)\n"); | |
3049 | return 0; | |
3050 | } | |
3051 | /* OK, they are all OK, now go through again and actually send */ | |
3052 | for (i = 1; i < argc; i++) { | |
3053 | if ((s = getsend(argv[i])) == 0) { | |
3054 | fprintf(stderr, "Telnet 'send' error - argument disappeared!\n"); | |
3055 | quit(); | |
3056 | /*NOTREACHED*/ | |
3057 | } | |
3058 | if (s->routine) { | |
3059 | (*s->routine)(s); | |
3060 | } else { | |
3061 | switch (what = s->what) { | |
3062 | case SYNCH: | |
3063 | dosynch(); | |
3064 | break; | |
3065 | case SENDQUESTION: | |
3066 | for (s = Sendlist; s->name; s++) { | |
3067 | if (s->help) { | |
3068 | printf(s->name); | |
3069 | if (s->help) { | |
3070 | printf("\t%s", s->help); | |
3071 | } | |
3072 | printf("\n"); | |
3073 | } | |
3074 | } | |
3075 | question = 1; | |
3076 | break; | |
3077 | case SENDESCAPE: | |
3078 | NETADD(escape); | |
3079 | break; | |
3080 | default: | |
3081 | NET2ADD(IAC, what); | |
3082 | break; | |
3083 | } | |
3084 | } | |
3085 | } | |
3086 | return !question; | |
3087 | } | |
3088 | \f | |
3089 | /* | |
3090 | * The following are the routines and data structures referred | |
3091 | * to by the arguments to the "toggle" command. | |
3092 | */ | |
3093 | ||
3094 | static | |
3095 | lclchars() | |
3096 | { | |
3097 | donelclchars = 1; | |
3098 | return 1; | |
3099 | } | |
3100 | ||
3101 | static | |
3102 | togdebug() | |
3103 | { | |
3104 | #ifndef NOT43 | |
3105 | if (net > 0 && | |
3a764688 | 3106 | (SetSockOpt(net, SOL_SOCKET, SO_DEBUG, debug)) < 0) { |
3e91ea2a GM |
3107 | perror("setsockopt (SO_DEBUG)"); |
3108 | } | |
58f9a26f | 3109 | #else /* NOT43 */ |
3e91ea2a | 3110 | if (debug) { |
3a764688 | 3111 | if (net > 0 && SetSockOpt(net, SOL_SOCKET, SO_DEBUG, 0, 0) < 0) |
3e91ea2a GM |
3112 | perror("setsockopt (SO_DEBUG)"); |
3113 | } else | |
3114 | printf("Cannot turn off socket debugging\n"); | |
58f9a26f | 3115 | #endif /* NOT43 */ |
3e91ea2a GM |
3116 | return 1; |
3117 | } | |
3118 | ||
3119 | ||
614687b7 GM |
3120 | static int |
3121 | togcrlf() | |
3122 | { | |
3123 | if (crlf) { | |
3124 | printf("Will send carriage returns as telnet <CR><LF>.\n"); | |
3125 | } else { | |
3126 | printf("Will send carriage returns as telnet <CR><NUL>.\n"); | |
3127 | } | |
3128 | return 1; | |
3129 | } | |
3130 | ||
3131 | ||
4f8919ec GM |
3132 | static int |
3133 | togbinary() | |
3134 | { | |
3135 | donebinarytoggle = 1; | |
3136 | ||
3137 | if (myopts[TELOPT_BINARY] == 0) { /* Go into binary mode */ | |
3138 | NET2ADD(IAC, DO); | |
3139 | NETADD(TELOPT_BINARY); | |
3140 | printoption("<SENT", doopt, TELOPT_BINARY, 0); | |
3141 | NET2ADD(IAC, WILL); | |
3142 | NETADD(TELOPT_BINARY); | |
3143 | printoption("<SENT", doopt, TELOPT_BINARY, 0); | |
3144 | hisopts[TELOPT_BINARY] = myopts[TELOPT_BINARY] = 1; | |
3145 | printf("Negotiating binary mode with remote host.\n"); | |
3146 | } else { /* Turn off binary mode */ | |
3147 | NET2ADD(IAC, DONT); | |
3148 | NETADD(TELOPT_BINARY); | |
3149 | printoption("<SENT", dont, TELOPT_BINARY, 0); | |
3150 | NET2ADD(IAC, DONT); | |
3151 | NETADD(TELOPT_BINARY); | |
3152 | printoption("<SENT", dont, TELOPT_BINARY, 0); | |
3153 | hisopts[TELOPT_BINARY] = myopts[TELOPT_BINARY] = 0; | |
3154 | printf("Negotiating network ascii mode with remote host.\n"); | |
3155 | } | |
3156 | return 1; | |
3157 | } | |
3158 | ||
3159 | ||
3e91ea2a GM |
3160 | |
3161 | extern int togglehelp(); | |
3162 | ||
3163 | struct togglelist { | |
3164 | char *name; /* name of toggle */ | |
3165 | char *help; /* help message */ | |
3166 | int (*handler)(); /* routine to do actual setting */ | |
3167 | int dohelp; /* should we display help information */ | |
3168 | int *variable; | |
3169 | char *actionexplanation; | |
3170 | }; | |
3171 | ||
3172 | static struct togglelist Togglelist[] = { | |
3173 | { "autoflush", | |
3174 | "toggle flushing of output when sending interrupt characters", | |
3175 | 0, | |
3176 | 1, | |
3177 | &autoflush, | |
3178 | "flush output when sending interrupt characters" }, | |
3179 | { "autosynch", | |
3180 | "toggle automatic sending of interrupt characters in urgent mode", | |
3181 | 0, | |
3182 | 1, | |
3183 | &autosynch, | |
3184 | "send interrupt characters in urgent mode" }, | |
4f8919ec GM |
3185 | { "binary", |
3186 | "toggle sending and receiving of binary data", | |
3187 | togbinary, | |
3188 | 1, | |
3189 | 0, | |
614687b7 GM |
3190 | 0 }, |
3191 | { "crlf", | |
3192 | "toggle sending carriage returns as telnet <CR><LF>", | |
3193 | togcrlf, | |
3194 | 1, | |
3195 | &crlf, | |
3196 | 0 }, | |
3e91ea2a GM |
3197 | { "crmod", |
3198 | "toggle mapping of received carriage returns", | |
3199 | 0, | |
3200 | 1, | |
3201 | &crmod, | |
3202 | "map carriage return on output" }, | |
3203 | { "localchars", | |
3204 | "toggle local recognition of certain control characters", | |
3205 | lclchars, | |
3206 | 1, | |
3207 | &localchars, | |
3208 | "recognize certain control characters" }, | |
3209 | { " ", "", 0, 1 }, /* empty line */ | |
3210 | { "debug", | |
3211 | "(debugging) toggle debugging", | |
3212 | togdebug, | |
3213 | 1, | |
3214 | &debug, | |
3215 | "turn on socket level debugging" }, | |
3216 | { "netdata", | |
3217 | "(debugging) toggle printing of hexadecimal network data", | |
3218 | 0, | |
3219 | 1, | |
3220 | &netdata, | |
3221 | "print hexadecimal representation of network traffic" }, | |
3222 | { "options", | |
3223 | "(debugging) toggle viewing of options processing", | |
3224 | 0, | |
3225 | 1, | |
3226 | &showoptions, | |
3227 | "show option processing" }, | |
3228 | { " ", "", 0, 1 }, /* empty line */ | |
3229 | { "?", | |
3230 | "display help information", | |
3231 | togglehelp, | |
3232 | 1 }, | |
3233 | { "help", | |
3234 | "display help information", | |
3235 | togglehelp, | |
3236 | 0 }, | |
3237 | { 0 } | |
3238 | }; | |
3239 | ||
3240 | static | |
3241 | togglehelp() | |
3242 | { | |
3243 | struct togglelist *c; | |
3244 | ||
3245 | for (c = Togglelist; c->name; c++) { | |
3246 | if (c->dohelp) { | |
3247 | printf("%s\t%s\n", c->name, c->help); | |
3248 | } | |
3249 | } | |
3250 | return 0; | |
3251 | } | |
3252 | ||
3253 | static char ** | |
3254 | getnexttoggle(name) | |
3255 | char *name; | |
3256 | { | |
3257 | struct togglelist *c = (struct togglelist *) name; | |
3258 | ||
3259 | return (char **) (c+1); | |
3260 | } | |
3261 | ||
3262 | static struct togglelist * | |
3263 | gettoggle(name) | |
3264 | char *name; | |
3265 | { | |
3266 | return (struct togglelist *) | |
3267 | genget(name, (char **) Togglelist, getnexttoggle); | |
3268 | } | |
3269 | ||
3270 | static | |
3271 | toggle(argc, argv) | |
3272 | int argc; | |
3273 | char *argv[]; | |
3274 | { | |
3275 | int retval = 1; | |
3276 | char *name; | |
3277 | struct togglelist *c; | |
3278 | ||
3279 | if (argc < 2) { | |
3280 | fprintf(stderr, | |
3281 | "Need an argument to 'toggle' command. 'toggle ?' for help.\n"); | |
3282 | return 0; | |
3283 | } | |
3284 | argc--; | |
3285 | argv++; | |
3286 | while (argc--) { | |
3287 | name = *argv++; | |
3288 | c = gettoggle(name); | |
3289 | if (c == Ambiguous(struct togglelist *)) { | |
3290 | fprintf(stderr, "'%s': ambiguous argument ('toggle ?' for help).\n", | |
3291 | name); | |
3292 | return 0; | |
3293 | } else if (c == 0) { | |
3294 | fprintf(stderr, "'%s': unknown argument ('toggle ?' for help).\n", | |
3295 | name); | |
3296 | return 0; | |
3297 | } else { | |
3298 | if (c->variable) { | |
3299 | *c->variable = !*c->variable; /* invert it */ | |
614687b7 GM |
3300 | if (c->actionexplanation) { |
3301 | printf("%s %s.\n", *c->variable? "Will" : "Won't", | |
3e91ea2a | 3302 | c->actionexplanation); |
614687b7 | 3303 | } |
3e91ea2a GM |
3304 | } |
3305 | if (c->handler) { | |
3306 | retval &= (*c->handler)(c); | |
3307 | } | |
3308 | } | |
3309 | } | |
3310 | return retval; | |
3311 | } | |
3312 | \f | |
3313 | /* | |
3314 | * The following perform the "set" command. | |
3315 | */ | |
3316 | ||
3317 | struct setlist { | |
3318 | char *name; /* name */ | |
3319 | char *help; /* help information */ | |
3320 | char *charp; /* where it is located at */ | |
3321 | }; | |
3322 | ||
3323 | static struct setlist Setlist[] = { | |
3324 | { "echo", "character to toggle local echoing on/off", &echoc }, | |
3325 | { "escape", "character to escape back to telnet command mode", &escape }, | |
3326 | { " ", "" }, | |
3327 | { " ", "The following need 'localchars' to be toggled true", 0 }, | |
3a764688 | 3328 | #if defined(unix) |
3e91ea2a GM |
3329 | { "erase", "character to cause an Erase Character", &nttyb.sg_erase }, |
3330 | { "flushoutput", "character to cause an Abort Oubput", &nltc.t_flushc }, | |
3331 | { "interrupt", "character to cause an Interrupt Process", &ntc.t_intrc }, | |
3332 | { "kill", "character to cause an Erase Line", &nttyb.sg_kill }, | |
3333 | { "quit", "character to cause a Break", &ntc.t_quitc }, | |
3334 | { "eof", "character to cause an EOF ", &ntc.t_eofc }, | |
3a764688 GM |
3335 | #endif /* defined(unix) */ |
3336 | #if defined(MSDOS) | |
3337 | { "erase", "character to cause an Erase Character", &termEraseChar }, | |
3338 | { "flushoutput", "character to cause an Abort Oubput", &termFlushChar }, | |
3339 | { "interrupt", "character to cause an Interrupt Process", &termIntChar }, | |
3340 | { "kill", "character to cause an Erase Line", &termKillChar }, | |
3341 | { "quit", "character to cause a Break", &termQuitChar }, | |
3342 | { "eof", "character to cause an EOF ", &termEofChar }, | |
3343 | #endif /* defined(MSDOS) */ | |
3e91ea2a GM |
3344 | { 0 } |
3345 | }; | |
3346 | ||
3347 | static char ** | |
3348 | getnextset(name) | |
3349 | char *name; | |
3350 | { | |
3351 | struct setlist *c = (struct setlist *)name; | |
3352 | ||
3353 | return (char **) (c+1); | |
3354 | } | |
3355 | ||
3356 | static struct setlist * | |
3357 | getset(name) | |
3358 | char *name; | |
3359 | { | |
3360 | return (struct setlist *) genget(name, (char **) Setlist, getnextset); | |
3361 | } | |
3362 | ||
3363 | static | |
3364 | setcmd(argc, argv) | |
3365 | int argc; | |
3366 | char *argv[]; | |
3367 | { | |
3368 | int value; | |
3369 | struct setlist *ct; | |
3370 | ||
3371 | /* XXX back we go... sigh */ | |
3372 | if (argc != 3) { | |
3373 | if ((argc == 2) && | |
3374 | ((!strcmp(argv[1], "?")) || (!strcmp(argv[1], "help")))) { | |
3375 | for (ct = Setlist; ct->name; ct++) { | |
3376 | printf("%s\t%s\n", ct->name, ct->help); | |
3377 | } | |
3378 | printf("?\tdisplay help information\n"); | |
3379 | } else { | |
3380 | printf("Format is 'set Name Value'\n'set ?' for help.\n"); | |
3381 | } | |
3382 | return 0; | |
3383 | } | |
3384 | ||
3385 | ct = getset(argv[1]); | |
3386 | if (ct == 0) { | |
3387 | fprintf(stderr, "'%s': unknown argument ('set ?' for help).\n", | |
3388 | argv[1]); | |
3389 | return 0; | |
3390 | } else if (ct == Ambiguous(struct setlist *)) { | |
3391 | fprintf(stderr, "'%s': ambiguous argument ('set ?' for help).\n", | |
3392 | argv[1]); | |
3393 | return 0; | |
3394 | } else { | |
3395 | if (strcmp("off", argv[2])) { | |
3396 | value = special(argv[2]); | |
3397 | } else { | |
3398 | value = -1; | |
3399 | } | |
3400 | *(ct->charp) = value; | |
3401 | printf("%s character is '%s'.\n", ct->name, control(*(ct->charp))); | |
3402 | } | |
3403 | return 1; | |
3404 | } | |
3405 | \f | |
3406 | /* | |
3407 | * The following are the data structures and routines for the | |
3408 | * 'mode' command. | |
3409 | */ | |
3410 | ||
3411 | static | |
3412 | dolinemode() | |
3413 | { | |
3414 | if (hisopts[TELOPT_SGA]) { | |
3415 | wontoption(TELOPT_SGA, 0); | |
3416 | } | |
3417 | if (hisopts[TELOPT_ECHO]) { | |
3418 | wontoption(TELOPT_ECHO, 0); | |
3419 | } | |
3420 | return 1; | |
3421 | } | |
3422 | ||
3423 | static | |
3424 | docharmode() | |
3425 | { | |
3426 | if (!hisopts[TELOPT_SGA]) { | |
3427 | willoption(TELOPT_SGA, 0); | |
3428 | } | |
3429 | if (!hisopts[TELOPT_ECHO]) { | |
3430 | willoption(TELOPT_ECHO, 0); | |
3431 | } | |
3432 | return 1; | |
3433 | } | |
3434 | ||
3435 | static struct cmd Modelist[] = { | |
3436 | { "character", "character-at-a-time mode", docharmode, 1, 1 }, | |
3437 | { "line", "line-by-line mode", dolinemode, 1, 1 }, | |
3438 | { 0 }, | |
3439 | }; | |
3440 | ||
3441 | static char ** | |
3442 | getnextmode(name) | |
3443 | char *name; | |
3444 | { | |
3445 | struct cmd *c = (struct cmd *) name; | |
3446 | ||
3447 | return (char **) (c+1); | |
3448 | } | |
3449 | ||
3450 | static struct cmd * | |
3451 | getmodecmd(name) | |
3452 | char *name; | |
3453 | { | |
3454 | return (struct cmd *) genget(name, (char **) Modelist, getnextmode); | |
3455 | } | |
3456 | ||
3457 | static | |
3458 | modecmd(argc, argv) | |
3459 | int argc; | |
3460 | char *argv[]; | |
3461 | { | |
3462 | struct cmd *mt; | |
3463 | ||
3464 | if ((argc != 2) || !strcmp(argv[1], "?") || !strcmp(argv[1], "help")) { | |
3465 | printf("format is: 'mode Mode', where 'Mode' is one of:\n\n"); | |
3466 | for (mt = Modelist; mt->name; mt++) { | |
3467 | printf("%s\t%s\n", mt->name, mt->help); | |
3468 | } | |
3469 | return 0; | |
3470 | } | |
3471 | mt = getmodecmd(argv[1]); | |
3472 | if (mt == 0) { | |
3473 | fprintf(stderr, "Unknown mode '%s' ('mode ?' for help).\n", argv[1]); | |
3474 | return 0; | |
3475 | } else if (mt == Ambiguous(struct cmd *)) { | |
3476 | fprintf(stderr, "Ambiguous mode '%s' ('mode ?' for help).\n", argv[1]); | |
3477 | return 0; | |
3478 | } else { | |
3479 | (*mt->handler)(); | |
3480 | } | |
3481 | return 1; | |
3482 | } | |
3483 | \f | |
3484 | /* | |
3485 | * The following data structures and routines implement the | |
3486 | * "display" command. | |
3487 | */ | |
3488 | ||
3489 | static | |
3490 | display(argc, argv) | |
3491 | int argc; | |
3492 | char *argv[]; | |
3493 | { | |
3494 | #define dotog(tl) if (tl->variable && tl->actionexplanation) { \ | |
3495 | if (*tl->variable) { \ | |
3496 | printf("will"); \ | |
3497 | } else { \ | |
3498 | printf("won't"); \ | |
3499 | } \ | |
3500 | printf(" %s.\n", tl->actionexplanation); \ | |
3501 | } | |
3502 | ||
3503 | #define doset(sl) if (sl->name && *sl->name != ' ') { \ | |
3504 | printf("[%s]\t%s.\n", control(*sl->charp), sl->name); \ | |
3505 | } | |
3506 | ||
3507 | struct togglelist *tl; | |
3508 | struct setlist *sl; | |
3509 | ||
3510 | if (argc == 1) { | |
3511 | for (tl = Togglelist; tl->name; tl++) { | |
3512 | dotog(tl); | |
3513 | } | |
3514 | printf("\n"); | |
3515 | for (sl = Setlist; sl->name; sl++) { | |
3516 | doset(sl); | |
3517 | } | |
3518 | } else { | |
3519 | int i; | |
3520 | ||
3521 | for (i = 1; i < argc; i++) { | |
3522 | sl = getset(argv[i]); | |
3523 | tl = gettoggle(argv[i]); | |
3524 | if ((sl == Ambiguous(struct setlist *)) || | |
3525 | (tl == Ambiguous(struct togglelist *))) { | |
3526 | printf("?Ambiguous argument '%s'.\n", argv[i]); | |
3527 | return 0; | |
3528 | } else if (!sl && !tl) { | |
3529 | printf("?Unknown argument '%s'.\n", argv[i]); | |
3530 | return 0; | |
3531 | } else { | |
3532 | if (tl) { | |
3533 | dotog(tl); | |
3534 | } | |
3535 | if (sl) { | |
3536 | doset(sl); | |
3537 | } | |
3538 | } | |
3539 | } | |
3540 | } | |
3541 | return 1; | |
3542 | #undef doset | |
3543 | #undef dotog | |
3544 | } | |
3545 | \f | |
3546 | /* | |
3547 | * The following are the data structures, and many of the routines, | |
3548 | * relating to command processing. | |
3549 | */ | |
3550 | ||
3551 | /* | |
3552 | * Set the escape character. | |
3553 | */ | |
3554 | static | |
3555 | setescape(argc, argv) | |
3556 | int argc; | |
3557 | char *argv[]; | |
3558 | { | |
3559 | register char *arg; | |
3560 | char buf[50]; | |
3561 | ||
3562 | printf( | |
3563 | "Deprecated usage - please use 'set escape%s%s' in the future.\n", | |
3564 | (argc > 2)? " ":"", (argc > 2)? argv[1]: ""); | |
3565 | if (argc > 2) | |
3566 | arg = argv[1]; | |
3567 | else { | |
3568 | printf("new escape character: "); | |
3569 | gets(buf); | |
3570 | arg = buf; | |
3571 | } | |
3572 | if (arg[0] != '\0') | |
3573 | escape = arg[0]; | |
3574 | if (!In3270) { | |
3575 | printf("Escape character is '%s'.\n", control(escape)); | |
3576 | } | |
3577 | fflush(stdout); | |
3578 | return 1; | |
3579 | } | |
3580 | ||
3581 | /*VARARGS*/ | |
3582 | static | |
3583 | togcrmod() | |
3584 | { | |
3585 | crmod = !crmod; | |
3586 | printf("Deprecated usage - please use 'toggle crmod' in the future.\n"); | |
3587 | printf("%s map carriage return on output.\n", crmod ? "Will" : "Won't"); | |
3588 | fflush(stdout); | |
3589 | return 1; | |
3590 | } | |
3591 | ||
3592 | /*VARARGS*/ | |
3593 | suspend() | |
3594 | { | |
3595 | setcommandmode(); | |
3596 | #if defined(unix) | |
3597 | kill(0, SIGTSTP); | |
3eb3862f | 3598 | #endif /* defined(unix) */ |
3e91ea2a | 3599 | /* reget parameters in case they were changed */ |
3a764688 | 3600 | TerminalSaveState(); |
3eb3862f | 3601 | setconnmode(); |
3e91ea2a GM |
3602 | return 1; |
3603 | } | |
3604 | ||
3605 | /*VARARGS*/ | |
3606 | static | |
0d3c45d4 GM |
3607 | bye(argc, argv) |
3608 | int argc; /* Number of arguments */ | |
3609 | char *argv[]; /* arguments */ | |
3e91ea2a GM |
3610 | { |
3611 | if (connected) { | |
3612 | shutdown(net, 2); | |
3613 | printf("Connection closed.\n"); | |
42cf515f | 3614 | NetClose(net); |
3e91ea2a GM |
3615 | connected = 0; |
3616 | /* reset options */ | |
0d3c45d4 | 3617 | tninit(); |
3e91ea2a | 3618 | #if defined(TN3270) |
0d3c45d4 | 3619 | SetIn3270(); /* Get out of 3270 mode */ |
3e91ea2a GM |
3620 | #endif /* defined(TN3270) */ |
3621 | } | |
0d3c45d4 GM |
3622 | if ((argc != 2) || (strcmp(argv[1], "fromquit") != 0)) { |
3623 | longjmp(toplevel, 1); | |
3624 | /* NOTREACHED */ | |
3625 | } | |
3626 | return 1; /* Keep lint, etc., happy */ | |
3e91ea2a GM |
3627 | } |
3628 | ||
3629 | /*VARARGS*/ | |
3630 | quit() | |
3631 | { | |
0d3c45d4 | 3632 | (void) call(bye, "bye", "fromquit", 0); |
3e91ea2a GM |
3633 | Exit(0); |
3634 | /*NOTREACHED*/ | |
3635 | return 1; /* just to keep lint happy */ | |
3636 | } | |
3637 | ||
3638 | /* | |
3639 | * Print status about the connection. | |
3640 | */ | |
3641 | static | |
3642 | status(argc, argv) | |
3643 | int argc; | |
3644 | char *argv[]; | |
3645 | { | |
3646 | if (connected) { | |
3647 | printf("Connected to %s.\n", hostname); | |
3648 | if (argc < 2) { | |
3649 | printf("Operating in %s.\n", | |
3650 | modelist[getconnmode()].modedescriptions); | |
3651 | if (localchars) { | |
3652 | printf("Catching signals locally.\n"); | |
3653 | } | |
3654 | } | |
3655 | } else { | |
3656 | printf("No connection.\n"); | |
3657 | } | |
3658 | # if !defined(TN3270) | |
3659 | printf("Escape character is '%s'.\n", control(escape)); | |
3660 | fflush(stdout); | |
3661 | # else /* !defined(TN3270) */ | |
3662 | if ((!In3270) && ((argc < 2) || strcmp(argv[1], "notmuch"))) { | |
3663 | printf("Escape character is '%s'.\n", control(escape)); | |
3664 | } | |
3665 | # if defined(unix) | |
3666 | if (In3270 && transcom) { | |
3667 | printf("Transparent mode command is '%s'.\n", transcom); | |
3668 | } | |
3669 | # endif /* defined(unix) */ | |
3670 | fflush(stdout); | |
3671 | if (In3270) { | |
3672 | return 0; | |
3673 | } | |
3674 | # endif /* defined(TN3270) */ | |
3675 | return 1; | |
3676 | } | |
3677 | ||
3678 | #if defined(TN3270) && defined(unix) | |
3679 | static | |
3680 | settranscom(argc, argv) | |
3681 | int argc; | |
3682 | char *argv[]; | |
3683 | { | |
3684 | int i, len = 0; | |
3685 | char *strcpy(), *strcat(); | |
3686 | ||
3687 | if (argc == 1 && transcom) { | |
3688 | transcom = 0; | |
3689 | } | |
3690 | if (argc == 1) { | |
3691 | return; | |
3692 | } | |
3693 | for (i = 1; i < argc; ++i) { | |
3694 | len += 1 + strlen(argv[1]); | |
3695 | } | |
3696 | transcom = tline; | |
3697 | (void) strcpy(transcom, argv[1]); | |
3698 | for (i = 2; i < argc; ++i) { | |
3699 | (void) strcat(transcom, " "); | |
3700 | (void) strcat(transcom, argv[i]); | |
3701 | } | |
3702 | } | |
3703 | #endif /* defined(TN3270) && defined(unix) */ | |
3704 | ||
3705 | ||
7a29e53d | 3706 | |
3e91ea2a GM |
3707 | static |
3708 | tn(argc, argv) | |
3709 | int argc; | |
3710 | char *argv[]; | |
3711 | { | |
3712 | register struct hostent *host = 0; | |
42cf515f | 3713 | #if defined(MSDOS) |
3e91ea2a | 3714 | char *cp; |
42cf515f | 3715 | #endif /* defined(MSDOS) */ |
3e91ea2a GM |
3716 | |
3717 | if (connected) { | |
3718 | printf("?Already connected to %s\n", hostname); | |
3719 | return 0; | |
3720 | } | |
3721 | if (argc < 2) { | |
3722 | (void) strcpy(line, "Connect "); | |
3723 | printf("(to) "); | |
3724 | gets(&line[strlen(line)]); | |
3725 | makeargv(); | |
3726 | argc = margc; | |
3727 | argv = margv; | |
3728 | } | |
9384854c | 3729 | if ((argc < 2) || (argc > 3)) { |
3e91ea2a GM |
3730 | printf("usage: %s host-name [port]\n", argv[0]); |
3731 | return 0; | |
3732 | } | |
42cf515f | 3733 | #if defined(MSDOS) |
3e91ea2a GM |
3734 | for (cp = argv[1]; *cp; cp++) { |
3735 | if (isupper(*cp)) { | |
3736 | *cp = tolower(*cp); | |
3737 | } | |
3738 | } | |
42cf515f | 3739 | #endif /* defined(MSDOS) */ |
3e91ea2a GM |
3740 | sin.sin_addr.s_addr = inet_addr(argv[1]); |
3741 | if (sin.sin_addr.s_addr != -1) { | |
3742 | sin.sin_family = AF_INET; | |
3743 | (void) strcpy(hnamebuf, argv[1]); | |
3744 | hostname = hnamebuf; | |
3745 | } else { | |
3746 | host = gethostbyname(argv[1]); | |
3747 | if (host) { | |
3748 | sin.sin_family = host->h_addrtype; | |
3749 | #if defined(h_addr) /* In 4.3, this is a #define */ | |
42cf515f GM |
3750 | memcpy((caddr_t)&sin.sin_addr, |
3751 | host->h_addr_list[0], host->h_length); | |
3e91ea2a | 3752 | #else /* defined(h_addr) */ |
42cf515f | 3753 | memcpy((caddr_t)&sin.sin_addr, host->h_addr, host->h_length); |
3e91ea2a GM |
3754 | #endif /* defined(h_addr) */ |
3755 | hostname = host->h_name; | |
3756 | } else { | |
3757 | printf("%s: unknown host\n", argv[1]); | |
3758 | return 0; | |
3759 | } | |
3760 | } | |
3761 | sin.sin_port = sp->s_port; | |
3762 | if (argc == 3) { | |
3763 | sin.sin_port = atoi(argv[2]); | |
3764 | if (sin.sin_port == 0) { | |
3765 | sp = getservbyname(argv[2], "tcp"); | |
3766 | if (sp) | |
3767 | sin.sin_port = sp->s_port; | |
3768 | else { | |
3769 | printf("%s: bad port number\n", argv[2]); | |
3770 | return 0; | |
3771 | } | |
3772 | } else { | |
3773 | sin.sin_port = atoi(argv[2]); | |
3774 | sin.sin_port = htons(sin.sin_port); | |
3775 | } | |
3776 | telnetport = 0; | |
3777 | } else { | |
3778 | telnetport = 1; | |
3779 | } | |
3780 | #if defined(unix) | |
3781 | signal(SIGINT, intr); | |
3782 | signal(SIGQUIT, intr2); | |
3783 | signal(SIGPIPE, deadpeer); | |
3784 | #endif /* defined(unix) */ | |
3785 | printf("Trying...\n"); | |
3786 | do { | |
3787 | net = socket(AF_INET, SOCK_STREAM, 0); | |
3788 | if (net < 0) { | |
3789 | perror("telnet: socket"); | |
3790 | return 0; | |
3791 | } | |
3a764688 | 3792 | if (debug && SetSockOpt(net, SOL_SOCKET, SO_DEBUG, 1) < 0) { |
3e91ea2a | 3793 | perror("setsockopt (SO_DEBUG)"); |
3a764688 | 3794 | } |
3e91ea2a GM |
3795 | |
3796 | if (connect(net, (struct sockaddr *)&sin, sizeof (sin)) < 0) { | |
3797 | #if defined(h_addr) /* In 4.3, this is a #define */ | |
3798 | if (host && host->h_addr_list[1]) { | |
3799 | int oerrno = errno; | |
3800 | ||
3801 | fprintf(stderr, "telnet: connect to address %s: ", | |
3802 | inet_ntoa(sin.sin_addr)); | |
3803 | errno = oerrno; | |
3804 | perror((char *)0); | |
3805 | host->h_addr_list++; | |
42cf515f GM |
3806 | memcpy((caddr_t)&sin.sin_addr, |
3807 | host->h_addr_list[0], host->h_length); | |
3e91ea2a GM |
3808 | fprintf(stderr, "Trying %s...\n", |
3809 | inet_ntoa(sin.sin_addr)); | |
42cf515f | 3810 | (void) NetClose(net); |
3e91ea2a GM |
3811 | continue; |
3812 | } | |
3813 | #endif /* defined(h_addr) */ | |
3814 | perror("telnet: Unable to connect to remote host"); | |
3815 | #if defined(unix) | |
3816 | signal(SIGINT, SIG_DFL); | |
3817 | signal(SIGQUIT, SIG_DFL); | |
58f9a26f | 3818 | #endif /* defined(unix) */ |
3e91ea2a GM |
3819 | return 0; |
3820 | } | |
3821 | connected++; | |
3822 | } while (connected == 0); | |
3823 | call(status, "status", "notmuch", 0); | |
3824 | if (setjmp(peerdied) == 0) | |
3825 | telnet(); | |
42cf515f | 3826 | NetClose(net); |
3e91ea2a GM |
3827 | ExitString(stderr, "Connection closed by foreign host.\n",1); |
3828 | /*NOTREACHED*/ | |
3829 | } | |
3830 | ||
3831 | ||
3832 | #define HELPINDENT (sizeof ("connect")) | |
3833 | ||
3834 | static char | |
3835 | openhelp[] = "connect to a site", | |
3836 | closehelp[] = "close current connection", | |
3837 | quithelp[] = "exit telnet", | |
3e91ea2a GM |
3838 | statushelp[] = "print status information", |
3839 | helphelp[] = "print help information", | |
3840 | sendhelp[] = "transmit special characters ('send ?' for more)", | |
3841 | sethelp[] = "set operating parameters ('set ?' for more)", | |
3842 | togglestring[] ="toggle operating parameters ('toggle ?' for more)", | |
3843 | displayhelp[] = "display operating parameters", | |
3844 | #if defined(TN3270) && defined(unix) | |
3845 | transcomhelp[] = "specify Unix command for transparent mode pipe", | |
3846 | #endif /* defined(TN3270) && defined(unix) */ | |
7a29e53d GM |
3847 | #if defined(unix) |
3848 | zhelp[] = "suspend telnet", | |
3849 | #endif /* defined(unix */ | |
3dd51ee4 | 3850 | #if defined(TN3270) |
7a29e53d | 3851 | shellhelp[] = "invoke a subshell", |
3dd51ee4 | 3852 | #endif /* defined(TN3270) */ |
3e91ea2a GM |
3853 | modehelp[] = "try to enter line-by-line or character-at-a-time mode"; |
3854 | ||
7a29e53d | 3855 | extern int help(), shell(); |
3e91ea2a GM |
3856 | |
3857 | static struct cmd cmdtab[] = { | |
3858 | { "close", closehelp, bye, 1, 1 }, | |
3859 | { "display", displayhelp, display, 1, 0 }, | |
3860 | { "mode", modehelp, modecmd, 1, 1 }, | |
3861 | { "open", openhelp, tn, 1, 0 }, | |
3862 | { "quit", quithelp, quit, 1, 0 }, | |
3863 | { "send", sendhelp, sendcmd, 1, 1 }, | |
3864 | { "set", sethelp, setcmd, 1, 0 }, | |
3865 | { "status", statushelp, status, 1, 0 }, | |
3866 | { "toggle", togglestring, toggle, 1, 0 }, | |
3867 | #if defined(TN3270) && defined(unix) | |
3868 | { "transcom", transcomhelp, settranscom, 1, 0 }, | |
3869 | #endif /* defined(TN3270) && defined(unix) */ | |
7a29e53d | 3870 | #if defined(unix) |
3e91ea2a | 3871 | { "z", zhelp, suspend, 1, 0 }, |
7a29e53d | 3872 | #endif /* defined(unix) */ |
3dd51ee4 GM |
3873 | #if defined(TN3270) |
3874 | { "!", shellhelp, shell, 1, 1 }, | |
3875 | #endif /* defined(TN3270) */ | |
3e91ea2a GM |
3876 | { "?", helphelp, help, 1, 0 }, |
3877 | 0 | |
3878 | }; | |
3879 | ||
3880 | static char crmodhelp[] = "deprecated command -- use 'toggle crmod' instead"; | |
3881 | static char escapehelp[] = "deprecated command -- use 'set escape' instead"; | |
3882 | ||
3883 | static struct cmd cmdtab2[] = { | |
3884 | { "help", helphelp, help, 0, 0 }, | |
3885 | { "escape", escapehelp, setescape, 1, 0 }, | |
3886 | { "crmod", crmodhelp, togcrmod, 1, 0 }, | |
3887 | 0 | |
3888 | }; | |
3889 | ||
3890 | /* | |
3891 | * Call routine with argc, argv set from args (terminated by 0). | |
3892 | * VARARGS2 | |
3893 | */ | |
3894 | static | |
3895 | call(routine, args) | |
3896 | int (*routine)(); | |
3897 | char *args; | |
3898 | { | |
3899 | register char **argp; | |
3900 | register int argc; | |
3901 | ||
3902 | for (argc = 0, argp = &args; *argp++ != 0; argc++) | |
3903 | ; | |
3904 | return (*routine)(argc, &args); | |
3905 | } | |
3906 | ||
3907 | static char ** | |
3908 | getnextcmd(name) | |
3909 | char *name; | |
3910 | { | |
3911 | struct cmd *c = (struct cmd *) name; | |
3912 | ||
3913 | return (char **) (c+1); | |
3914 | } | |
3915 | ||
3916 | static struct cmd * | |
3917 | getcmd(name) | |
3918 | char *name; | |
3919 | { | |
3920 | struct cmd *cm; | |
3921 | ||
3922 | if ((cm = (struct cmd *) genget(name, (char **) cmdtab, getnextcmd)) != 0) { | |
3923 | return cm; | |
3924 | } else { | |
3925 | return (struct cmd *) genget(name, (char **) cmdtab2, getnextcmd); | |
3926 | } | |
3927 | } | |
3928 | ||
3929 | void | |
3930 | command(top) | |
3931 | int top; | |
3932 | { | |
3dd51ee4 | 3933 | register struct cmd *c; |
3e91ea2a | 3934 | |
3dd51ee4 GM |
3935 | setcommandmode(); |
3936 | if (!top) { | |
3937 | putchar('\n'); | |
3938 | } else { | |
3e91ea2a | 3939 | #if defined(unix) |
3dd51ee4 GM |
3940 | signal(SIGINT, SIG_DFL); |
3941 | signal(SIGQUIT, SIG_DFL); | |
3e91ea2a | 3942 | #endif /* defined(unix) */ |
3dd51ee4 GM |
3943 | } |
3944 | for (;;) { | |
3945 | printf("%s> ", prompt); | |
3946 | if (gets(line) == NULL) { | |
3947 | if (feof(stdin) || ferror(stdin)) | |
3948 | quit(); | |
3949 | break; | |
3e91ea2a | 3950 | } |
3dd51ee4 GM |
3951 | if (line[0] == 0) |
3952 | break; | |
3953 | makeargv(); | |
3954 | c = getcmd(margv[0]); | |
3955 | if (c == Ambiguous(struct cmd *)) { | |
3956 | printf("?Ambiguous command\n"); | |
3957 | continue; | |
3e91ea2a | 3958 | } |
3dd51ee4 GM |
3959 | if (c == 0) { |
3960 | printf("?Invalid command\n"); | |
3961 | continue; | |
3962 | } | |
3963 | if (c->needconnect && !connected) { | |
3964 | printf("?Need to be connected first.\n"); | |
3965 | continue; | |
3966 | } | |
3967 | if ((*c->handler)(margc, margv)) { | |
3968 | break; | |
3969 | } | |
3970 | } | |
3971 | if (!top) { | |
3972 | if (!connected) { | |
3973 | longjmp(toplevel, 1); | |
3974 | /*NOTREACHED*/ | |
3e91ea2a | 3975 | } |
1cb0a406 | 3976 | #if defined(TN3270) |
3dd51ee4 GM |
3977 | if (shell_active == 0) { |
3978 | setconnmode(); | |
3979 | } | |
1cb0a406 GM |
3980 | #else /* defined(TN3270) */ |
3981 | setconnmode(); | |
3982 | #endif /* defined(TN3270) */ | |
3dd51ee4 | 3983 | } |
3e91ea2a GM |
3984 | } |
3985 | \f | |
3986 | /* | |
3987 | * Help command. | |
3988 | */ | |
3989 | static | |
3990 | help(argc, argv) | |
3991 | int argc; | |
3992 | char *argv[]; | |
3993 | { | |
3994 | register struct cmd *c; | |
3995 | ||
3996 | if (argc == 1) { | |
3997 | printf("Commands may be abbreviated. Commands are:\n\n"); | |
3998 | for (c = cmdtab; c->name; c++) | |
3999 | if (c->dohelp) { | |
4000 | printf("%-*s\t%s\n", HELPINDENT, c->name, | |
4001 | c->help); | |
4002 | } | |
4003 | return 0; | |
4004 | } | |
4005 | while (--argc > 0) { | |
4006 | register char *arg; | |
4007 | arg = *++argv; | |
4008 | c = getcmd(arg); | |
4009 | if (c == Ambiguous(struct cmd *)) | |
4010 | printf("?Ambiguous help command %s\n", arg); | |
4011 | else if (c == (struct cmd *)0) | |
4012 | printf("?Invalid help command %s\n", arg); | |
4013 | else | |
4014 | printf("%s\n", c->help); | |
4015 | } | |
4016 | return 0; | |
4017 | } | |
4018 | \f | |
4019 | /* | |
4020 | * main. Parse arguments, invoke the protocol or command parser. | |
4021 | */ | |
4022 | ||
4023 | ||
4024 | void | |
4025 | main(argc, argv) | |
4026 | int argc; | |
4027 | char *argv[]; | |
4028 | { | |
0d3c45d4 GM |
4029 | tninit(); /* Clear out things */ |
4030 | ||
3e91ea2a | 4031 | NetTrace = stdout; |
3a764688 GM |
4032 | TerminalSaveState(); |
4033 | autoflush = TerminalAutoFlush(); | |
4034 | ||
3e91ea2a | 4035 | prompt = argv[0]; |
3dd51ee4 GM |
4036 | while ((argc > 1) && (argv[1][0] == '-')) { |
4037 | if (!strcmp(argv[1], "-d")) { | |
4038 | debug = 1; | |
4039 | } else if (!strcmp(argv[1], "-n")) { | |
c71df935 GM |
4040 | if ((argc > 1) && (argv[2][0] != '-')) { /* get file name */ |
4041 | NetTrace = fopen(argv[2], "w"); | |
3dd51ee4 GM |
4042 | argv++; |
4043 | argc--; | |
4044 | if (NetTrace == NULL) { | |
4045 | NetTrace = stdout; | |
4046 | } | |
3e91ea2a | 4047 | } |
3dd51ee4 | 4048 | } else { |
3e91ea2a | 4049 | #if defined(TN3270) && defined(unix) |
3dd51ee4 | 4050 | if (!strcmp(argv[1], "-t")) { |
98729b33 | 4051 | if ((argc > 1) && (argv[2][0] != '-')) { /* get file name */ |
3dd51ee4 GM |
4052 | transcom = tline; |
4053 | (void) strcpy(transcom, argv[1]); | |
4054 | argv++; | |
4055 | argc--; | |
4056 | } | |
4057 | } else if (!strcmp(argv[1], "-noasynch")) { | |
4058 | noasynch = 1; | |
4059 | } else | |
4060 | #endif /* defined(TN3270) && defined(unix) */ | |
4061 | if (argv[1][1] != '\0') { | |
4062 | fprintf(stderr, "Unknown option *%s*.\n", argv[1]); | |
4063 | } | |
3e91ea2a | 4064 | } |
3dd51ee4 GM |
4065 | argc--; |
4066 | argv++; | |
3e91ea2a | 4067 | } |
3e91ea2a GM |
4068 | if (argc != 1) { |
4069 | if (setjmp(toplevel) != 0) | |
4070 | Exit(0); | |
4071 | tn(argc, argv); | |
4072 | } | |
4073 | setjmp(toplevel); | |
3eb3862f GM |
4074 | for (;;) { |
4075 | #if !defined(TN3270) | |
3e91ea2a | 4076 | command(1); |
3eb3862f GM |
4077 | #else /* !defined(TN3270) */ |
4078 | if (!shell_active) { | |
4079 | command(1); | |
4080 | } else { | |
3dd51ee4 | 4081 | #if defined(TN3270) |
3eb3862f | 4082 | shell_continue(); |
3dd51ee4 | 4083 | #endif /* defined(TN3270) */ |
3eb3862f GM |
4084 | } |
4085 | #endif /* !defined(TN3270) */ | |
4086 | } | |
3e91ea2a | 4087 | } |