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 2014 Gary Mills
24 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
25 * Use is subject to license terms.
26 */
27
28 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
29 /* All Rights Reserved */
30
31 /*
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 #endif /* TLI */
83 /*
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 */
100 /* first i/o operation */
101 int (*IN_teardown)(); /* teardown function, called after */
102 /* last 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 (0 == 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",
248 fdread);
249 if (ioctl(fdwrite, DIOCFLUSH, NULL) != 0)
250 DEBUG(4, "dkteardown: DIOCFLUSH of output fd %d failed",
251 fdwrite);
252
253 (void) close(fdread);
254 (void) close(fdwrite);
255 return (SUCCESS);
256 }
257 #endif /* DATAKIT */
258
259
260 #ifdef TLI
261 /*
262 * tread - tli read routine
263 */
264 static ssize_t
265 tread(fd, buf, nbytes)
266 int fd;
267 char *buf;
268 unsigned nbytes;
269 {
270 int rcvflags;
271
272 return ((ssize_t)t_rcv(fd, buf, nbytes, &rcvflags));
273 }
274
275 /*
276 * twrite - tli write routine
277 */
278 #define N_CHECK 100
279 static ssize_t
280 twrite(fd, buf, nbytes)
281 int fd;
282 char *buf;
283 unsigned nbytes;
284 {
285 register int i, ret;
286 static int n_writ, got_info;
287 static struct t_info info;
288
289 if (got_info == 0) {
290 if (t_getinfo(fd, &info) != 0) {
291 tfaillog(fd, "twrite: t_getinfo\n");
292 return (FAIL);
293 }
294 got_info = 1;
295 }
296
297 /* on every N_CHECKth call, check that are still in DATAXFER state */
298 if (++n_writ == N_CHECK) {
299 n_writ = 0;
300 if (t_getstate(fd) != T_DATAXFER)
301 return (FAIL);
302 }
303
304 if (info.tsdu <= 0 || nbytes <= info.tsdu)
305 return (t_snd(fd, buf, nbytes, 0));
306
307 /* if get here, then there is a limit on transmit size */
308 /* (info.tsdu > 0) and buf exceeds it */
309 i = ret = 0;
310 while (nbytes >= info.tsdu) {
311 if ((ret = t_snd(fd, &buf[i], info.tsdu, 0)) != info.tsdu)
312 return ((ret >= 0 ? (i + ret) : ret));
313 i += info.tsdu;
314 nbytes -= info.tsdu;
315 }
316 if (nbytes != 0) {
317 if ((ret = t_snd(fd, &buf[i], nbytes, 0)) != nbytes)
318 return ((ssize_t)(ret >= 0 ? (i + ret) : ret));
319 i += nbytes;
320 }
321 return ((ssize_t)i);
322 }
323
324
325 /*
326 * tioctl - stub for tli ioctl routine
327 */
328 /*ARGSUSED*/
329 static int
330 #ifdef __STDC__
331 tioctl(int fd, int request, ...)
332 #else
333 tioctl(fd, request, arg)
334 int fd, request;
335 #endif
336 {
337 return (SUCCESS);
338 }
339
340 /*
341 * tsetup - tli setup routine
342 * note blatant assumption that *fdreadp == *fdwritep == 0
343 */
344 static int
345 tsetup(role, fdreadp, fdwritep)
346 int *fdreadp, *fdwritep;
347 {
348
349 if (role == SLAVE) {
350 *fdreadp = 0;
351 *fdwritep = 1;
352 /* 2 has been re-opened to RMTDEBUG in main() */
353 errno = t_errno = 0;
354 if (t_sync(*fdreadp) == -1 || t_sync(*fdwritep) == -1) {
355 tfaillog(*fdreadp, "tsetup: t_sync\n");
356 return (FAIL);
357 }
358 }
359 return (SUCCESS);
360 }
361
362 /*
363 * tteardown - tli shutdown routine
364 */
365 /*ARGSUSED*/
366 static int
367 tteardown(role, fdread, fdwrite)
368 {
369 (void) t_unbind(fdread);
370 (void) t_close(fdread);
371 return (SUCCESS);
372 }
373
374 #ifdef TLIS
375 /*
376 * tssetup - tli, with streams module, setup routine
377 * note blatant assumption that *fdreadp == *fdwritep
378 */
379 static int
380 tssetup(role, fdreadp, fdwritep)
381 int role;
382 int *fdreadp;
383 int *fdwritep;
384 {
385 if (role == SLAVE) {
386 *fdreadp = 0;
387 *fdwritep = 1;
388 /* 2 has been re-opened to RMTDEBUG in main() */
389 DEBUG(5, "tssetup: SLAVE mode: leaving ok\n%s", "");
390 return (SUCCESS);
391 }
392
393 DEBUG(4, "tssetup: MASTER mode: leaving ok\n%s", "");
394 return (SUCCESS);
395 }
396
397 /*
398 * Report why a TLI call failed.
399 */
400 GLOBAL void
401 tfaillog(fd, s)
402 int fd;
403 char *s;
404 {
405 char fmt[ BUFSIZ ];
406
407 if (0 < t_errno && t_errno < t_nerr) {
408 sprintf(fmt, "%s: %%s\n", s);
409 DEBUG(5, fmt, t_errlist[t_errno]);
410 logent(s, t_errlist[t_errno]);
411 if (t_errno == TSYSERR) {
412 strcpy(fmt, "tlicall: system error: %s\n");
413 DEBUG(5, fmt, strerror(errno));
414 } else if (t_errno == TLOOK) {
415 show_tlook(fd);
416 }
417 } else {
418 sprintf(fmt, "unknown tli error %d", t_errno);
419 logent(s, fmt);
420 sprintf(fmt, "%s: unknown tli error %d", s, t_errno);
421 DEBUG(5, fmt, 0);
422 sprintf(fmt, "%s: %%s\n", s);
423 DEBUG(5, fmt, strerror(errno));
424 }
425 }
426
427 GLOBAL void
428 show_tlook(fd)
429 int fd;
430 {
431 register int reason;
432 register char *msg;
433 extern int t_errno;
434 /*
435 * Find out the current state of the interface.
436 */
437 errno = t_errno = 0;
438 switch (reason = t_getstate(fd)) {
439 case T_UNBND: msg = "T_UNBIND"; break;
440 case T_IDLE: msg = "T_IDLE"; break;
441 case T_OUTCON: msg = "T_OUTCON"; break;
442 case T_INCON: msg = "T_INCON"; break;
443 case T_DATAXFER: msg = "T_DATAXFER"; break;
444 case T_OUTREL: msg = "T_OUTREL"; break;
445 case T_INREL: msg = "T_INREL"; break;
446 default: msg = NULL; break;
447 }
448 if (msg == NULL)
449 return;
450
451 DEBUG(5, "state is %s", msg);
452 switch (reason = t_look(fd)) {
453 case -1: msg = ""; break;
454 case 0: msg = "NO ERROR"; break;
455 case T_LISTEN: msg = "T_LISTEN"; break;
456 case T_CONNECT: msg = "T_CONNECT"; break;
457 case T_DATA: msg = "T_DATA"; break;
458 case T_EXDATA: msg = "T_EXDATA"; break;
459 case T_DISCONNECT: msg = "T_DISCONNECT"; break;
460 case T_ORDREL: msg = "T_ORDREL"; 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 }
480
481 #endif /* TLIS */
482
483 #endif /* TLI */