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
interface(label)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
usetup(int role,int * fdreadp,int * fdwritep)164 usetup(int role, int *fdreadp, int *fdwritep)
165 {
166 if (role == SLAVE)
167 {
168 *fdreadp = 0;
169 *fdwritep = 1;
170 /* 2 has been re-opened to RMTDEBUG in main() */
171 }
172 return (SUCCESS);
173 }
174
175 /*
176 * uteardown - vanilla unix teardown routine
177 */
178 static int
uteardown(int role,int fdread,int fdwrite)179 uteardown(int role, int fdread, int fdwrite)
180 {
181 int ret;
182 char *ttyn;
183
184 if (role == SLAVE) {
185 ret = restline();
186 DEBUG(4, "ret restline - %d\n", ret);
187 if (fdread != -1)
188 sethup(fdread);
189 }
190 if (fdread != -1) {
191 ttyn = ttyname(fdread);
192 if (ttyn != NULL && Dev_mode != 0)
193 chmod(ttyn, Dev_mode); /* can fail, but who cares? */
194 (void) close(fdread);
195 (void) close(fdwrite);
196 }
197 return (SUCCESS);
198 }
199
200 #ifdef DATAKIT
201 /*
202 * dksetup - DATAKIT setup routine
203 *
204 * Put line in block mode.
205 */
206
207 static int
dksetup(role,fdreadp,fdwritep)208 dksetup(role, fdreadp, fdwritep)
209
210 int role;
211 int *fdreadp;
212 int *fdwritep;
213
214 {
215 static short dkrmode[3] = { DKR_BLOCK | DKR_TIME, 0, 0 };
216 int ret;
217
218 (void) usetup(role, fdreadp, fdwritep);
219 if ((ret = (*Ioctl)(*fdreadp, DIOCRMODE, dkrmode)) < 0) {
220 DEBUG(4, "dksetup: failed to set block mode. ret=%d,\n", ret);
221 DEBUG(4, "read fd=%d, ", *fdreadp);
222 DEBUG(4, "errno=%d\n", errno);
223 return (FAIL);
224 }
225 return (SUCCESS);
226 }
227
228 /*
229 * dkteardown - DATAKIT teardown routine
230 */
231 static int
dkteardown(role,fdread,fdwrite)232 dkteardown(role, fdread, fdwrite)
233 int role, fdread, fdwrite;
234 {
235 char *ttyn;
236
237 if (role == MASTER) {
238 ttyn = ttyname(fdread);
239 if (ttyn != NULL && Dev_mode != 0)
240 chmod(ttyn, Dev_mode); /* can fail, but who cares? */
241 }
242
243 /* must flush fd's for datakit */
244 /* else close can hang */
245 if (ioctl(fdread, DIOCFLUSH, NULL) != 0)
246 DEBUG(4, "dkteardown: DIOCFLUSH of input fd %d failed",
247 fdread);
248 if (ioctl(fdwrite, DIOCFLUSH, NULL) != 0)
249 DEBUG(4, "dkteardown: DIOCFLUSH of output fd %d failed",
250 fdwrite);
251
252 (void) close(fdread);
253 (void) close(fdwrite);
254 return (SUCCESS);
255 }
256 #endif /* DATAKIT */
257
258
259 #ifdef TLI
260 /*
261 * tread - tli read routine
262 */
263 static ssize_t
tread(fd,buf,nbytes)264 tread(fd, buf, nbytes)
265 int fd;
266 char *buf;
267 unsigned nbytes;
268 {
269 int rcvflags;
270
271 return ((ssize_t)t_rcv(fd, buf, nbytes, &rcvflags));
272 }
273
274 /*
275 * twrite - tli write routine
276 */
277 #define N_CHECK 100
278 static ssize_t
twrite(fd,buf,nbytes)279 twrite(fd, buf, nbytes)
280 int fd;
281 char *buf;
282 unsigned nbytes;
283 {
284 register int i, ret;
285 static int n_writ, got_info;
286 static struct t_info info;
287
288 if (got_info == 0) {
289 if (t_getinfo(fd, &info) != 0) {
290 tfaillog(fd, "twrite: t_getinfo\n");
291 return (FAIL);
292 }
293 got_info = 1;
294 }
295
296 /* on every N_CHECKth call, check that are still in DATAXFER state */
297 if (++n_writ == N_CHECK) {
298 n_writ = 0;
299 if (t_getstate(fd) != T_DATAXFER)
300 return (FAIL);
301 }
302
303 if (info.tsdu <= 0 || nbytes <= info.tsdu)
304 return (t_snd(fd, buf, nbytes, 0));
305
306 /* if get here, then there is a limit on transmit size */
307 /* (info.tsdu > 0) and buf exceeds it */
308 i = ret = 0;
309 while (nbytes >= info.tsdu) {
310 if ((ret = t_snd(fd, &buf[i], info.tsdu, 0)) != info.tsdu)
311 return ((ret >= 0 ? (i + ret) : ret));
312 i += info.tsdu;
313 nbytes -= info.tsdu;
314 }
315 if (nbytes != 0) {
316 if ((ret = t_snd(fd, &buf[i], nbytes, 0)) != nbytes)
317 return ((ssize_t)(ret >= 0 ? (i + ret) : ret));
318 i += nbytes;
319 }
320 return ((ssize_t)i);
321 }
322
323
324 /*
325 * tioctl - stub for tli ioctl routine
326 */
327 static int
tioctl(int fd __unused,int request __unused,...)328 tioctl(int fd __unused, int request __unused, ...)
329 {
330 return (SUCCESS);
331 }
332
333 /*
334 * tsetup - tli setup routine
335 * note blatant assumption that *fdreadp == *fdwritep == 0
336 */
337 static int
tsetup(int role,int * fdreadp,int * fdwritep)338 tsetup(int role, int *fdreadp, int *fdwritep)
339 {
340
341 if (role == SLAVE) {
342 *fdreadp = 0;
343 *fdwritep = 1;
344 /* 2 has been re-opened to RMTDEBUG in main() */
345 errno = t_errno = 0;
346 if (t_sync(*fdreadp) == -1 || t_sync(*fdwritep) == -1) {
347 tfaillog(*fdreadp, "tsetup: t_sync\n");
348 return (FAIL);
349 }
350 }
351 return (SUCCESS);
352 }
353
354 /*
355 * tteardown - tli shutdown routine
356 */
357 static int
tteardown(int role __unused,int fdread,int fdwrite __unused)358 tteardown(int role __unused, int fdread, int fdwrite __unused)
359 {
360 (void) t_unbind(fdread);
361 (void) t_close(fdread);
362 return (SUCCESS);
363 }
364
365 #ifdef TLIS
366 /*
367 * tssetup - tli, with streams module, setup routine
368 * note blatant assumption that *fdreadp == *fdwritep
369 */
370 static int
tssetup(role,fdreadp,fdwritep)371 tssetup(role, fdreadp, fdwritep)
372 int role;
373 int *fdreadp;
374 int *fdwritep;
375 {
376 if (role == SLAVE) {
377 *fdreadp = 0;
378 *fdwritep = 1;
379 /* 2 has been re-opened to RMTDEBUG in main() */
380 DEBUG(5, "tssetup: SLAVE mode: leaving ok\n%s", "");
381 return (SUCCESS);
382 }
383
384 DEBUG(4, "tssetup: MASTER mode: leaving ok\n%s", "");
385 return (SUCCESS);
386 }
387
388 /*
389 * Report why a TLI call failed.
390 */
391 GLOBAL void
tfaillog(fd,s)392 tfaillog(fd, s)
393 int fd;
394 char *s;
395 {
396 char fmt[ BUFSIZ ];
397
398 if (0 < t_errno && t_errno < t_nerr) {
399 sprintf(fmt, "%s: %%s\n", s);
400 DEBUG(5, fmt, t_errlist[t_errno]);
401 logent(s, t_errlist[t_errno]);
402 if (t_errno == TSYSERR) {
403 strcpy(fmt, "tlicall: system error: %s\n");
404 DEBUG(5, fmt, strerror(errno));
405 } else if (t_errno == TLOOK) {
406 show_tlook(fd);
407 }
408 } else {
409 sprintf(fmt, "unknown tli error %d", t_errno);
410 logent(s, fmt);
411 sprintf(fmt, "%s: unknown tli error %d", s, t_errno);
412 DEBUG(5, fmt, 0);
413 sprintf(fmt, "%s: %%s\n", s);
414 DEBUG(5, fmt, strerror(errno));
415 }
416 }
417
418 GLOBAL void
show_tlook(fd)419 show_tlook(fd)
420 int fd;
421 {
422 register int reason;
423 register char *msg;
424 extern int t_errno;
425 /*
426 * Find out the current state of the interface.
427 */
428 errno = t_errno = 0;
429 switch (reason = t_getstate(fd)) {
430 case T_UNBND: msg = "T_UNBIND"; break;
431 case T_IDLE: msg = "T_IDLE"; break;
432 case T_OUTCON: msg = "T_OUTCON"; break;
433 case T_INCON: msg = "T_INCON"; break;
434 case T_DATAXFER: msg = "T_DATAXFER"; break;
435 case T_OUTREL: msg = "T_OUTREL"; break;
436 case T_INREL: msg = "T_INREL"; break;
437 default: msg = NULL; break;
438 }
439 if (msg == NULL)
440 return;
441
442 DEBUG(5, "state is %s", msg);
443 switch (reason = t_look(fd)) {
444 case -1: msg = ""; break;
445 case 0: msg = "NO ERROR"; break;
446 case T_LISTEN: msg = "T_LISTEN"; break;
447 case T_CONNECT: msg = "T_CONNECT"; break;
448 case T_DATA: msg = "T_DATA"; break;
449 case T_EXDATA: msg = "T_EXDATA"; break;
450 case T_DISCONNECT: msg = "T_DISCONNECT"; break;
451 case T_ORDREL: msg = "T_ORDREL"; break;
452 case T_UDERR: msg = "T_UDERR"; break;
453 default: msg = "UNKNOWN ERROR"; break;
454 }
455 DEBUG(4, " reason is %s\n", msg);
456
457 if (reason == T_DISCONNECT)
458 {
459 struct t_discon *dropped;
460 if (((dropped =
461 (struct t_discon *)t_alloc(fd, T_DIS, T_ALL)) == 0) ||
462 (t_rcvdis(fd, dropped) == -1)) {
463 if (dropped)
464 t_free((char *)dropped, T_DIS);
465 return;
466 }
467 DEBUG(5, "disconnect reason #%d\n", dropped->reason);
468 t_free((char *)dropped, T_DIS);
469 }
470 }
471
472 #endif /* TLIS */
473
474 #endif /* TLI */
475