1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
28 /* All Rights Reserved */
29
30
31 #pragma ident "%Z%%M% %I% %E% SMI"
32 /* interface( label )
33 provide alternate definitions for the I/O functions through global
34 interfaces.
35 */
36 #include "uucp.h"
37
38 #ifdef TLI
39 #include <tiuser.h>
40 char *t_alloc();
41 int t_bind(), t_close(), t_connect(), t_free(), t_look(), t_open(), t_rcvdis();
42 int t_getinfo(), t_getstate(), t_look(), t_rcv(), t_snd(), t_sync(), t_unbind();
43 #endif /* TLI */
44
45 #ifdef DATAKIT
46 #include "dk.h"
47
48 static int dksetup();
49 static int dkteardown();
50 #endif /* DATAKIT */
51
52 EXTERN void sethup();
53 EXTERN int restline();
54 #if defined(__STDC__)
55 extern int ioctl(int, int, ...);
56 #else
57 extern int ioctl();
58 #endif
59 static int usetup(), uteardown();
60
61 GLOBAL ssize_t (*Read)() = read,
62 (*Write)() = write;
63 #if defined(__STDC__)
64 GLOBAL int (*Ioctl)(int,int,...) = ioctl,
65 #else
66 GLOBAL int (*Ioctl)() = ioctl,
67 #endif
68 (*Setup)() = usetup,
69 (*Teardown)() = uteardown;
70
71 #ifdef TLI
72 EXTERN void tfaillog(), show_tlook();
73 static ssize_t tread(), twrite(); /* TLI i/o */
74 #ifdef __STDC__
75 static int tioctl(int, int, ...),
76 #else
77 static int tioctl(), /* TLI i/o control */
78 #endif
79 tsetup(), /* TLI setup without streams module */
80 tssetup(), /* TLI setup with streams module */
81 tteardown(); /* TLI teardown, works with either setup
82 */
83 #endif /* TLI */
84 /* The IN_label in Interface[] imply different caller routines:
85 e.g. tlicall().
86 If so, the names here and the names in callers.c must match.
87 */
88
89 static
90 struct Interface {
91 char *IN_label; /* interface name */
92 ssize_t (*IN_read)(); /* read function */
93 ssize_t (*IN_write)(); /* write function */
94 #ifdef __STDC__
95 int (*IN_ioctl)(int,int,...);
96 #else
97 int (*IN_ioctl)(); /* ioctl function */
98 #endif
99 int (*IN_setup)(); /* setup function, called before first
100 i/o operation */
101 int (*IN_teardown)(); /* teardown function, called after last
102 i/o operation */
103 } Interface[] = {
104 /* vanilla UNIX */
105 { "UNIX", read, write, ioctl, usetup, uteardown },
106 #ifdef TCP
107 /* TCP over sockets or UNET */
108 { "TCP", read, write, ioctl, usetup, uteardown },
109 #endif /* TCP */
110 #ifdef SYTEK
111 /* Sytek network */
112 { "Sytek", read, write, ioctl, usetup, uteardown },
113 #endif /* Sytek network */
114 #ifdef DIAL801
115 /* 801 auto dialers */
116 { "801", read, write, ioctl, usetup, uteardown },
117 #endif /* DIAL801 */
118 #ifdef DIAL801
119 /* 212 auto dialers */
120 { "212", read, write, ioctl, usetup, uteardown },
121 #endif /* DIAL801 */
122 #ifdef TLI
123 /* AT&T Transport Interface Library WITHOUT streams */
124 { "TLI", tread, twrite, tioctl, tsetup, tteardown },
125 #ifdef TLIS
126 /* AT&T Transport Interface Library WITH streams */
127 { "TLIS", read, write, tioctl, tssetup, uteardown },
128 #endif /* TLIS */
129 #endif /* TLI */
130 #ifdef DATAKIT
131 { "DK", read, write, ioctl, dksetup, dkteardown },
132 #endif /* DATAKIT */
133 #ifdef UNET
134 { "Unetserver", read, write, ioctl, usetup, uteardown },
135 #endif
136 { 0, 0, 0, 0, 0, 0 }
137 };
138
139
140 GLOBAL int
141 interface(label)
142 char *label;
143 {
144 register int i;
145
146 for ( i = 0; Interface[i].IN_label; ++i ) {
147 if( !strcmp( Interface[i].IN_label, label ) ) {
148 Read = Interface[i].IN_read;
149 Write = Interface[i].IN_write;
150 Ioctl = Interface[i].IN_ioctl;
151 Setup = Interface[i].IN_setup;
152 Teardown = Interface[i].IN_teardown;
153 DEBUG(5, "set interface %s\n", label);
154 return( 0 );
155 }
156 }
157 return( FAIL );
158 }
159
160 /*
161 * usetup - vanilla unix setup routine
162 */
163 static int
164 usetup( role, fdreadp, fdwritep )
165 int *fdreadp, *fdwritep;
166 {
167 if ( role == SLAVE )
168 {
169 *fdreadp = 0;
170 *fdwritep = 1;
171 /* 2 has been re-opened to RMTDEBUG in main() */
172 }
173 return(SUCCESS);
174 }
175
176 /*
177 * uteardown - vanilla unix teardown routine
178 */
179 static int
180 uteardown( role, fdread, fdwrite )
181 {
182 int ret;
183 char *ttyn;
184
185 if (role == SLAVE) {
186 ret = restline();
187 DEBUG(4, "ret restline - %d\n", ret);
188 if (fdread != -1)
189 sethup(fdread);
190 }
191 if (fdread != -1) {
192 ttyn = ttyname(fdread);
193 if (ttyn != NULL && Dev_mode != 0)
194 chmod(ttyn, Dev_mode); /* can fail, but who cares? */
195 (void) close(fdread);
196 (void) close(fdwrite);
197 }
198 return(SUCCESS);
199 }
200
201 #ifdef DATAKIT
202 /*
203 * dksetup - DATAKIT setup routine
204 *
205 * Put line in block mode.
206 */
207
208 static int
209 dksetup (role, fdreadp, fdwritep)
210
211 int role;
212 int * fdreadp;
213 int * fdwritep;
214
215 {
216 static short dkrmode[3] = { DKR_BLOCK | DKR_TIME, 0, 0 };
217 int ret;
218
219 (void) usetup(role, fdreadp, fdwritep);
220 if((ret = (*Ioctl)(*fdreadp, DIOCRMODE, dkrmode)) < 0) {
221 DEBUG(4, "dksetup: failed to set block mode. ret=%d,\n", ret);
222 DEBUG(4, "read fd=%d, ", *fdreadp);
223 DEBUG(4, "errno=%d\n", errno);
224 return(FAIL);
225 }
226 return(SUCCESS);
227 }
228
229 /*
230 * dkteardown - DATAKIT teardown routine
231 */
232 static int
233 dkteardown( role, fdread, fdwrite )
234 int role, fdread, fdwrite;
235 {
236 char *ttyn;
237
238 if ( role == MASTER ) {
239 ttyn = ttyname(fdread);
240 if ( ttyn != NULL && Dev_mode != 0 )
241 chmod(ttyn, Dev_mode); /* can fail, but who cares? */
242 }
243
244 /* must flush fd's for datakit */
245 /* else close can hang */
246 if ( ioctl(fdread, DIOCFLUSH, NULL) != 0 )
247 DEBUG(4, "dkteardown: DIOCFLUSH of input fd %d failed", fdread);
248 if ( ioctl(fdwrite, DIOCFLUSH, NULL) != 0 )
249 DEBUG(4, "dkteardown: DIOCFLUSH of output fd %d failed", fdwrite);
250
251 (void)close(fdread);
252 (void)close(fdwrite);
253 return(SUCCESS);
254 }
255 #endif /* DATAKIT */
256
257
258 #ifdef TLI
259 /*
260 * tread - tli read routine
261 */
262 static ssize_t
263 tread(fd, buf, nbytes)
264 int fd;
265 char *buf;
266 unsigned nbytes;
267 {
268 int rcvflags;
269
270 return((ssize_t)t_rcv(fd, buf, nbytes, &rcvflags));
271 }
272
273 /*
274 * twrite - tli write routine
275 */
276 #define N_CHECK 100
277 static ssize_t
278 twrite(fd, buf, nbytes)
279 int fd;
280 char *buf;
281 unsigned nbytes;
282 {
283 register int i, ret;
284 static int n_writ, got_info;
285 static struct t_info info;
286
287 if ( got_info == 0 ) {
288 if ( t_getinfo(fd, &info) != 0 ) {
289 tfaillog(fd, "twrite: t_getinfo\n");
290 return(FAIL);
291 }
292 got_info = 1;
293 }
294
295 /* on every N_CHECKth call, check that are still in DATAXFER state */
296 if ( ++n_writ == N_CHECK ) {
297 n_writ = 0;
298 if ( t_getstate(fd) != T_DATAXFER )
299 return(FAIL);
300 }
301
302 if ( info.tsdu <= 0 || nbytes <= info.tsdu )
303 return(t_snd(fd, buf, nbytes, NULL));
304
305 /* if get here, then there is a limit on transmit size */
306 /* (info.tsdu > 0) and buf exceeds it */
307 i = ret = 0;
308 while ( nbytes >= info.tsdu ) {
309 if ( (ret = t_snd(fd, &buf[i], info.tsdu, NULL)) != info.tsdu )
310 return( ( ret >= 0 ? (i + ret) : ret ) );
311 i += info.tsdu;
312 nbytes -= info.tsdu;
313 }
314 if ( nbytes != 0 ) {
315 if ( (ret = t_snd(fd, &buf[i], nbytes, NULL)) != nbytes )
316 return( (ssize_t)( ret >= 0 ? (i + ret) : ret ) );
317 i += nbytes;
318 }
319 return((ssize_t)i);
320 }
321
322
323 /*
324 * tioctl - stub for tli ioctl routine
325 */
326 /*ARGSUSED*/
327 static int
328 #ifdef __STDC__
329 tioctl(int fd, int request, ...)
330 #else
331 tioctl(fd, request, arg)
332 int fd, request;
333 #endif
334 {
335 return(SUCCESS);
336 }
337
338 /*
339 * tsetup - tli setup routine
340 * note blatant assumption that *fdreadp == *fdwritep == 0
341 */
342 static int
343 tsetup( role, fdreadp, fdwritep )
344 int *fdreadp, *fdwritep;
345 {
346
347 if ( role == SLAVE ) {
348 *fdreadp = 0;
349 *fdwritep = 1;
350 /* 2 has been re-opened to RMTDEBUG in main() */
351 errno = t_errno = 0;
352 if ( t_sync(*fdreadp) == -1 || t_sync(*fdwritep) == -1 ) {
353 tfaillog(*fdreadp, "tsetup: t_sync\n");
354 return(FAIL);
355 }
356 }
357 return(SUCCESS);
358 }
359
360 /*
361 * tteardown - tli shutdown routine
362 */
363 /*ARGSUSED*/
364 static int
365 tteardown( role, fdread, fdwrite )
366 {
367 (void)t_unbind(fdread);
368 (void)t_close(fdread);
369 return(SUCCESS);
370 }
371
372 #ifdef TLIS
373 /*
374 * tssetup - tli, with streams module, setup routine
375 * note blatant assumption that *fdreadp == *fdwritep
376 */
377 static int
378 tssetup( role, fdreadp, fdwritep )
379 int role;
380 int *fdreadp;
381 int *fdwritep;
382 {
383 if ( role == SLAVE ) {
384 *fdreadp = 0;
385 *fdwritep = 1;
386 /* 2 has been re-opened to RMTDEBUG in main() */
387 DEBUG(5, "tssetup: SLAVE mode: leaving ok\n%s", "");
388 return(SUCCESS);
389 }
390
391 DEBUG(4, "tssetup: MASTER mode: leaving ok\n%s", "");
392 return(SUCCESS);
393 }
394
395 /*
396 * Report why a TLI call failed.
397 */
398 GLOBAL void
399 tfaillog(fd, s)
400 int fd;
401 char *s;
402 {
403 char fmt[ BUFSIZ ];
404
405 if (0 < t_errno && t_errno < t_nerr) {
406 sprintf( fmt, "%s: %%s\n", s );
407 DEBUG(5, fmt, t_errlist[t_errno]);
408 logent(s, t_errlist[t_errno]);
409 if ( t_errno == TSYSERR ) {
410 strcpy(fmt, "tlicall: system error: %s\n");
411 DEBUG(5, fmt, strerror(errno));
412 } else if ( t_errno == TLOOK ) {
413 show_tlook(fd);
414 }
415 } else {
416 sprintf(fmt, "unknown tli error %d", t_errno);
417 logent(s, fmt);
418 sprintf(fmt, "%s: unknown tli error %d", s, t_errno);
419 DEBUG(5, fmt, 0);
420 sprintf(fmt, "%s: %%s\n", s);
421 DEBUG(5, fmt, strerror(errno));
422 }
423 return;
424 }
425
426 GLOBAL void
427 show_tlook(fd)
428 int fd;
429 {
430 register int reason;
431 register char *msg;
432 extern int t_errno;
433 /*
434 * Find out the current state of the interface.
435 */
436 errno = t_errno = 0;
437 switch( reason = t_getstate(fd) ) {
438 case T_UNBND: msg = "T_UNBIND"; break;
439 case T_IDLE: msg = "T_IDLE"; break;
440 case T_OUTCON: msg = "T_OUTCON"; break;
441 case T_INCON: msg = "T_INCON"; break;
442 case T_DATAXFER: msg = "T_DATAXFER"; break;
443 case T_OUTREL: msg = "T_OUTREL"; break;
444 case T_INREL: msg = "T_INREL"; break;
445 default: msg = NULL; break;
446 }
447 if( msg == NULL )
448 return;
449
450 DEBUG(5, "state is %s", msg);
451 switch( reason = t_look(fd) ) {
452 case -1: msg = ""; break;
453 case 0: msg = "NO ERROR"; break;
454 case T_LISTEN: msg = "T_LISTEN"; break;
455 case T_CONNECT: msg = "T_CONNECT"; break;
456 case T_DATA: msg = "T_DATA"; break;
457 case T_EXDATA: msg = "T_EXDATA"; break;
458 case T_DISCONNECT: msg = "T_DISCONNECT"; break;
459 case T_ORDREL: msg = "T_ORDREL"; break;
460 case T_ERROR: msg = "T_ERROR"; break;
461 case T_UDERR: msg = "T_UDERR"; break;
462 default: msg = "UNKNOWN ERROR"; break;
463 }
464 DEBUG(4, " reason is %s\n", msg);
465
466 if ( reason == T_DISCONNECT )
467 {
468 struct t_discon *dropped;
469 if ( ((dropped =
470 (struct t_discon *)t_alloc(fd, T_DIS, T_ALL)) == 0)
471 || (t_rcvdis(fd, dropped) == -1 )) {
472 if (dropped)
473 t_free((char *)dropped, T_DIS);
474 return;
475 }
476 DEBUG(5, "disconnect reason #%d\n", dropped->reason);
477 t_free((char *)dropped, T_DIS);
478 }
479 return;
480 }
481
482 #endif /* TLIS */
483
484 #endif /* TLI */