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1c3d792e |
1 | /* $RCSfile: doio.c,v $$Revision: 4.0.1.1 $$Date: 91/04/11 17:41:06 $ |
a687059c |
2 | * |
3 | * Copyright (c) 1989, Larry Wall |
4 | * |
5 | * You may distribute under the terms of the GNU General Public License |
6 | * as specified in the README file that comes with the perl 3.0 kit. |
7 | * |
8 | * $Log: doio.c,v $ |
1c3d792e |
9 | * Revision 4.0.1.1 91/04/11 17:41:06 lwall |
10 | * patch1: hopefully straightened out some of the Xenix mess |
11 | * |
fe14fcc3 |
12 | * Revision 4.0 91/03/20 01:07:06 lwall |
13 | * 4.0 baseline. |
a687059c |
14 | * |
15 | */ |
16 | |
17 | #include "EXTERN.h" |
18 | #include "perl.h" |
19 | |
fe14fcc3 |
20 | #ifdef HAS_SOCKET |
a687059c |
21 | #include <sys/socket.h> |
22 | #include <netdb.h> |
23 | #endif |
24 | |
fe14fcc3 |
25 | #ifdef HAS_SELECT |
1c3d792e |
26 | #ifdef I_SYS_SELECT |
27 | #ifndef I_SYS_TIME |
fe14fcc3 |
28 | #include <sys/select.h> |
29 | #endif |
30 | #endif |
1c3d792e |
31 | #endif |
fe14fcc3 |
32 | |
33 | #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM) |
c2ab57d4 |
34 | #include <sys/ipc.h> |
fe14fcc3 |
35 | #ifdef HAS_MSG |
c2ab57d4 |
36 | #include <sys/msg.h> |
e5d73d77 |
37 | #endif |
fe14fcc3 |
38 | #ifdef HAS_SEM |
c2ab57d4 |
39 | #include <sys/sem.h> |
e5d73d77 |
40 | #endif |
fe14fcc3 |
41 | #ifdef HAS_SHM |
c2ab57d4 |
42 | #include <sys/shm.h> |
43 | #endif |
e5d73d77 |
44 | #endif |
c2ab57d4 |
45 | |
a687059c |
46 | #ifdef I_PWD |
47 | #include <pwd.h> |
48 | #endif |
49 | #ifdef I_GRP |
50 | #include <grp.h> |
51 | #endif |
663a0e37 |
52 | #ifdef I_UTIME |
53 | #include <utime.h> |
54 | #endif |
ff8e2863 |
55 | #ifdef I_FCNTL |
56 | #include <fcntl.h> |
57 | #endif |
fe14fcc3 |
58 | #ifdef I_SYS_FILE |
59 | #include <sys/file.h> |
60 | #endif |
a687059c |
61 | |
57ebbfd0 |
62 | int laststatval = -1; |
fe14fcc3 |
63 | int laststype = O_STAT; |
57ebbfd0 |
64 | |
a687059c |
65 | bool |
afd9f252 |
66 | do_open(stab,name,len) |
a687059c |
67 | STAB *stab; |
68 | register char *name; |
afd9f252 |
69 | int len; |
a687059c |
70 | { |
71 | FILE *fp; |
a687059c |
72 | register STIO *stio = stab_io(stab); |
73 | char *myname = savestr(name); |
74 | int result; |
75 | int fd; |
76 | int writing = 0; |
77 | char mode[3]; /* stdio file mode ("r\0" or "r+\0") */ |
78 | |
79 | name = myname; |
80 | forkprocess = 1; /* assume true if no fork */ |
81 | while (len && isspace(name[len-1])) |
82 | name[--len] = '\0'; |
83 | if (!stio) |
84 | stio = stab_io(stab) = stio_new(); |
85 | else if (stio->ifp) { |
86 | fd = fileno(stio->ifp); |
87 | if (stio->type == '|') |
88 | result = mypclose(stio->ifp); |
c2ab57d4 |
89 | else if (stio->type == '-') |
90 | result = 0; |
a687059c |
91 | else if (stio->ifp != stio->ofp) { |
c2ab57d4 |
92 | if (stio->ofp) { |
93 | result = fclose(stio->ofp); |
94 | fclose(stio->ifp); /* clear stdio, fd already closed */ |
95 | } |
96 | else |
97 | result = fclose(stio->ifp); |
a687059c |
98 | } |
a687059c |
99 | else |
c2ab57d4 |
100 | result = fclose(stio->ifp); |
a687059c |
101 | if (result == EOF && fd > 2) |
102 | fprintf(stderr,"Warning: unable to close filehandle %s properly.\n", |
103 | stab_name(stab)); |
104 | stio->ofp = stio->ifp = Nullfp; |
105 | } |
106 | if (*name == '+' && len > 1 && name[len-1] != '|') { /* scary */ |
107 | mode[1] = *name++; |
108 | mode[2] = '\0'; |
109 | --len; |
110 | writing = 1; |
111 | } |
112 | else { |
113 | mode[1] = '\0'; |
114 | } |
115 | stio->type = *name; |
116 | if (*name == '|') { |
117 | for (name++; isspace(*name); name++) ; |
118 | #ifdef TAINT |
119 | taintenv(); |
120 | taintproper("Insecure dependency in piped open"); |
121 | #endif |
122 | fp = mypopen(name,"w"); |
123 | writing = 1; |
124 | } |
a687059c |
125 | else if (*name == '>') { |
126 | #ifdef TAINT |
127 | taintproper("Insecure dependency in open"); |
128 | #endif |
bf38876a |
129 | name++; |
130 | if (*name == '>') { |
131 | mode[0] = stio->type = 'a'; |
132 | name++; |
a687059c |
133 | } |
bf38876a |
134 | else |
a687059c |
135 | mode[0] = 'w'; |
a687059c |
136 | writing = 1; |
bf38876a |
137 | if (*name == '&') { |
138 | duplicity: |
139 | name++; |
140 | while (isspace(*name)) |
141 | name++; |
142 | if (isdigit(*name)) |
143 | fd = atoi(name); |
144 | else { |
145 | stab = stabent(name,FALSE); |
146 | if (!stab || !stab_io(stab)) |
147 | return FALSE; |
148 | if (stab_io(stab) && stab_io(stab)->ifp) { |
149 | fd = fileno(stab_io(stab)->ifp); |
150 | if (stab_io(stab)->type == 's') |
151 | stio->type = 's'; |
152 | } |
153 | else |
154 | fd = -1; |
155 | } |
fe14fcc3 |
156 | if (!(fp = fdopen(fd = dup(fd),mode))) { |
157 | close(fd); |
158 | } |
bf38876a |
159 | } |
160 | else { |
161 | while (isspace(*name)) |
162 | name++; |
163 | if (strEQ(name,"-")) { |
164 | fp = stdout; |
165 | stio->type = '-'; |
166 | } |
167 | else { |
168 | fp = fopen(name,mode); |
169 | } |
170 | } |
a687059c |
171 | } |
172 | else { |
173 | if (*name == '<') { |
bf38876a |
174 | mode[0] = 'r'; |
175 | name++; |
176 | while (isspace(*name)) |
177 | name++; |
178 | if (*name == '&') |
179 | goto duplicity; |
a687059c |
180 | if (strEQ(name,"-")) { |
181 | fp = stdin; |
182 | stio->type = '-'; |
183 | } |
bf38876a |
184 | else |
a687059c |
185 | fp = fopen(name,mode); |
a687059c |
186 | } |
187 | else if (name[len-1] == '|') { |
188 | #ifdef TAINT |
189 | taintenv(); |
190 | taintproper("Insecure dependency in piped open"); |
191 | #endif |
192 | name[--len] = '\0'; |
193 | while (len && isspace(name[len-1])) |
194 | name[--len] = '\0'; |
195 | for (; isspace(*name); name++) ; |
196 | fp = mypopen(name,"r"); |
197 | stio->type = '|'; |
198 | } |
199 | else { |
200 | stio->type = '<'; |
201 | for (; isspace(*name); name++) ; |
202 | if (strEQ(name,"-")) { |
203 | fp = stdin; |
204 | stio->type = '-'; |
205 | } |
206 | else |
207 | fp = fopen(name,"r"); |
208 | } |
209 | } |
210 | Safefree(myname); |
211 | if (!fp) |
212 | return FALSE; |
213 | if (stio->type && |
214 | stio->type != '|' && stio->type != '-') { |
215 | if (fstat(fileno(fp),&statbuf) < 0) { |
216 | (void)fclose(fp); |
217 | return FALSE; |
218 | } |
c623bd54 |
219 | if (S_ISSOCK(statbuf.st_mode)) |
bf38876a |
220 | stio->type = 's'; /* in case a socket was passed in to us */ |
c623bd54 |
221 | #ifdef S_IFMT |
222 | else if (!(statbuf.st_mode & S_IFMT)) |
223 | stio->type = 's'; /* some OS's return 0 on fstat()ed socket */ |
bf38876a |
224 | #endif |
a687059c |
225 | } |
fe14fcc3 |
226 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
bf38876a |
227 | fd = fileno(fp); |
6eb13c3b |
228 | fcntl(fd,F_SETFD,fd >= 3); |
bf38876a |
229 | #endif |
a687059c |
230 | stio->ifp = fp; |
bf38876a |
231 | if (writing) { |
232 | if (stio->type != 's') |
233 | stio->ofp = fp; |
234 | else |
fe14fcc3 |
235 | if (!(stio->ofp = fdopen(fileno(fp),"w"))) { |
236 | fclose(fp); |
237 | stio->ifp = Nullfp; |
238 | } |
bf38876a |
239 | } |
a687059c |
240 | return TRUE; |
241 | } |
242 | |
243 | FILE * |
244 | nextargv(stab) |
245 | register STAB *stab; |
246 | { |
247 | register STR *str; |
c623bd54 |
248 | int filedev; |
249 | int fileino; |
c623bd54 |
250 | int fileuid; |
251 | int filegid; |
fe14fcc3 |
252 | static int filemode = 0; |
253 | static int lastfd; |
254 | static char *oldname; |
255 | |
256 | if (!argvoutstab) |
257 | argvoutstab = stabent("ARGVOUT",TRUE); |
258 | if (filemode & (S_ISUID|S_ISGID)) { |
259 | fflush(stab_io(argvoutstab)->ifp); /* chmod must follow last write */ |
260 | #ifdef HAS_FCHMOD |
261 | (void)fchmod(lastfd,filemode); |
262 | #else |
263 | (void)chmod(oldname,filemode); |
264 | #endif |
265 | } |
266 | filemode = 0; |
a687059c |
267 | while (alen(stab_xarray(stab)) >= 0) { |
268 | str = ashift(stab_xarray(stab)); |
269 | str_sset(stab_val(stab),str); |
270 | STABSET(stab_val(stab)); |
271 | oldname = str_get(stab_val(stab)); |
afd9f252 |
272 | if (do_open(stab,oldname,stab_val(stab)->str_cur)) { |
a687059c |
273 | if (inplace) { |
274 | #ifdef TAINT |
275 | taintproper("Insecure dependency in inplace open"); |
276 | #endif |
c623bd54 |
277 | if (strEQ(oldname,"-")) { |
278 | str_free(str); |
279 | defoutstab = stabent("STDOUT",TRUE); |
280 | return stab_io(stab)->ifp; |
281 | } |
282 | filedev = statbuf.st_dev; |
283 | fileino = statbuf.st_ino; |
a687059c |
284 | filemode = statbuf.st_mode; |
285 | fileuid = statbuf.st_uid; |
286 | filegid = statbuf.st_gid; |
c623bd54 |
287 | if (!S_ISREG(filemode)) { |
288 | warn("Can't do inplace edit: %s is not a regular file", |
289 | oldname ); |
290 | do_close(stab,FALSE); |
291 | str_free(str); |
292 | continue; |
293 | } |
a687059c |
294 | if (*inplace) { |
ff8e2863 |
295 | #ifdef SUFFIX |
296 | add_suffix(str,inplace); |
297 | #else |
a687059c |
298 | str_cat(str,inplace); |
ff8e2863 |
299 | #endif |
c623bd54 |
300 | #ifndef FLEXFILENAMES |
301 | if (stat(str->str_ptr,&statbuf) >= 0 |
302 | && statbuf.st_dev == filedev |
303 | && statbuf.st_ino == fileino ) { |
304 | warn("Can't do inplace edit: %s > 14 characters", |
305 | str->str_ptr ); |
306 | do_close(stab,FALSE); |
307 | str_free(str); |
308 | continue; |
309 | } |
310 | #endif |
fe14fcc3 |
311 | #ifdef HAS_RENAME |
ff8e2863 |
312 | #ifndef MSDOS |
c623bd54 |
313 | if (rename(oldname,str->str_ptr) < 0) { |
314 | warn("Can't rename %s to %s: %s, skipping file", |
315 | oldname, str->str_ptr, strerror(errno) ); |
316 | do_close(stab,FALSE); |
317 | str_free(str); |
318 | continue; |
319 | } |
a687059c |
320 | #else |
ff8e2863 |
321 | do_close(stab,FALSE); |
322 | (void)unlink(str->str_ptr); |
323 | (void)rename(oldname,str->str_ptr); |
324 | do_open(stab,str->str_ptr,stab_val(stab)->str_cur); |
325 | #endif /* MSDOS */ |
326 | #else |
a687059c |
327 | (void)UNLINK(str->str_ptr); |
c623bd54 |
328 | if (link(oldname,str->str_ptr) < 0) { |
329 | warn("Can't rename %s to %s: %s, skipping file", |
330 | oldname, str->str_ptr, strerror(errno) ); |
331 | do_close(stab,FALSE); |
332 | str_free(str); |
333 | continue; |
334 | } |
a687059c |
335 | (void)UNLINK(oldname); |
336 | #endif |
337 | } |
338 | else { |
ff8e2863 |
339 | #ifndef MSDOS |
fe14fcc3 |
340 | if (UNLINK(oldname) < 0) { |
341 | warn("Can't rename %s to %s: %s, skipping file", |
342 | oldname, str->str_ptr, strerror(errno) ); |
343 | do_close(stab,FALSE); |
344 | str_free(str); |
345 | continue; |
346 | } |
ff8e2863 |
347 | #else |
348 | fatal("Can't do inplace edit without backup"); |
349 | #endif |
a687059c |
350 | } |
351 | |
352 | str_nset(str,">",1); |
353 | str_cat(str,oldname); |
354 | errno = 0; /* in case sprintf set errno */ |
fe14fcc3 |
355 | if (!do_open(argvoutstab,str->str_ptr,str->str_cur)) { |
c623bd54 |
356 | warn("Can't do inplace edit on %s: %s", |
357 | oldname, strerror(errno) ); |
fe14fcc3 |
358 | do_close(stab,FALSE); |
359 | str_free(str); |
360 | continue; |
361 | } |
a687059c |
362 | defoutstab = argvoutstab; |
fe14fcc3 |
363 | lastfd = fileno(stab_io(argvoutstab)->ifp); |
364 | (void)fstat(lastfd,&statbuf); |
365 | #ifdef HAS_FCHMOD |
366 | (void)fchmod(lastfd,filemode); |
a687059c |
367 | #else |
368 | (void)chmod(oldname,filemode); |
369 | #endif |
fe14fcc3 |
370 | if (fileuid != statbuf.st_uid || filegid != statbuf.st_gid) { |
371 | #ifdef HAS_FCHOWN |
372 | (void)fchown(lastfd,fileuid,filegid); |
a687059c |
373 | #else |
fe14fcc3 |
374 | #ifdef HAS_CHOWN |
375 | (void)chown(oldname,fileuid,filegid); |
a687059c |
376 | #endif |
b1248f16 |
377 | #endif |
fe14fcc3 |
378 | } |
a687059c |
379 | } |
380 | str_free(str); |
381 | return stab_io(stab)->ifp; |
382 | } |
383 | else |
c623bd54 |
384 | fprintf(stderr,"Can't open %s: %s\n",str_get(str), strerror(errno)); |
a687059c |
385 | str_free(str); |
386 | } |
387 | if (inplace) { |
388 | (void)do_close(argvoutstab,FALSE); |
389 | defoutstab = stabent("STDOUT",TRUE); |
390 | } |
391 | return Nullfp; |
392 | } |
393 | |
fe14fcc3 |
394 | #ifdef HAS_PIPE |
afd9f252 |
395 | void |
396 | do_pipe(str, rstab, wstab) |
397 | STR *str; |
398 | STAB *rstab; |
399 | STAB *wstab; |
400 | { |
401 | register STIO *rstio; |
402 | register STIO *wstio; |
403 | int fd[2]; |
404 | |
405 | if (!rstab) |
406 | goto badexit; |
407 | if (!wstab) |
408 | goto badexit; |
409 | |
410 | rstio = stab_io(rstab); |
411 | wstio = stab_io(wstab); |
412 | |
413 | if (!rstio) |
414 | rstio = stab_io(rstab) = stio_new(); |
415 | else if (rstio->ifp) |
416 | do_close(rstab,FALSE); |
417 | if (!wstio) |
418 | wstio = stab_io(wstab) = stio_new(); |
419 | else if (wstio->ifp) |
420 | do_close(wstab,FALSE); |
421 | |
422 | if (pipe(fd) < 0) |
423 | goto badexit; |
424 | rstio->ifp = fdopen(fd[0], "r"); |
425 | wstio->ofp = fdopen(fd[1], "w"); |
426 | wstio->ifp = wstio->ofp; |
427 | rstio->type = '<'; |
428 | wstio->type = '>'; |
fe14fcc3 |
429 | if (!rstio->ifp || !wstio->ofp) { |
430 | if (rstio->ifp) fclose(rstio->ifp); |
431 | else close(fd[0]); |
432 | if (wstio->ofp) fclose(wstio->ofp); |
433 | else close(fd[1]); |
434 | goto badexit; |
435 | } |
afd9f252 |
436 | |
437 | str_sset(str,&str_yes); |
438 | return; |
439 | |
440 | badexit: |
441 | str_sset(str,&str_undef); |
442 | return; |
443 | } |
b1248f16 |
444 | #endif |
afd9f252 |
445 | |
a687059c |
446 | bool |
447 | do_close(stab,explicit) |
448 | STAB *stab; |
449 | bool explicit; |
450 | { |
451 | bool retval = FALSE; |
c2ab57d4 |
452 | register STIO *stio; |
a687059c |
453 | int status; |
454 | |
c2ab57d4 |
455 | if (!stab) |
456 | stab = argvstab; |
457 | if (!stab) |
458 | return FALSE; |
459 | stio = stab_io(stab); |
a687059c |
460 | if (!stio) { /* never opened */ |
461 | if (dowarn && explicit) |
462 | warn("Close on unopened file <%s>",stab_name(stab)); |
463 | return FALSE; |
464 | } |
465 | if (stio->ifp) { |
466 | if (stio->type == '|') { |
467 | status = mypclose(stio->ifp); |
c623bd54 |
468 | retval = (status == 0); |
b1248f16 |
469 | statusvalue = (unsigned short)status & 0xffff; |
a687059c |
470 | } |
471 | else if (stio->type == '-') |
472 | retval = TRUE; |
473 | else { |
c2ab57d4 |
474 | if (stio->ofp && stio->ofp != stio->ifp) { /* a socket */ |
475 | retval = (fclose(stio->ofp) != EOF); |
476 | fclose(stio->ifp); /* clear stdio, fd already closed */ |
477 | } |
478 | else |
479 | retval = (fclose(stio->ifp) != EOF); |
a687059c |
480 | } |
481 | stio->ofp = stio->ifp = Nullfp; |
482 | } |
483 | if (explicit) |
484 | stio->lines = 0; |
485 | stio->type = ' '; |
486 | return retval; |
487 | } |
488 | |
489 | bool |
490 | do_eof(stab) |
491 | STAB *stab; |
492 | { |
493 | register STIO *stio; |
494 | int ch; |
495 | |
496 | if (!stab) { /* eof() */ |
497 | if (argvstab) |
498 | stio = stab_io(argvstab); |
499 | else |
500 | return TRUE; |
501 | } |
502 | else |
503 | stio = stab_io(stab); |
504 | |
505 | if (!stio) |
506 | return TRUE; |
507 | |
508 | while (stio->ifp) { |
509 | |
510 | #ifdef STDSTDIO /* (the code works without this) */ |
511 | if (stio->ifp->_cnt > 0) /* cheat a little, since */ |
512 | return FALSE; /* this is the most usual case */ |
513 | #endif |
514 | |
515 | ch = getc(stio->ifp); |
516 | if (ch != EOF) { |
517 | (void)ungetc(ch, stio->ifp); |
518 | return FALSE; |
519 | } |
fe14fcc3 |
520 | #ifdef STDSTDIO |
521 | if (stio->ifp->_cnt < -1) |
522 | stio->ifp->_cnt = -1; |
523 | #endif |
a687059c |
524 | if (!stab) { /* not necessarily a real EOF yet? */ |
525 | if (!nextargv(argvstab)) /* get another fp handy */ |
526 | return TRUE; |
527 | } |
528 | else |
529 | return TRUE; /* normal fp, definitely end of file */ |
530 | } |
531 | return TRUE; |
532 | } |
533 | |
534 | long |
535 | do_tell(stab) |
536 | STAB *stab; |
537 | { |
538 | register STIO *stio; |
539 | |
540 | if (!stab) |
541 | goto phooey; |
542 | |
543 | stio = stab_io(stab); |
544 | if (!stio || !stio->ifp) |
545 | goto phooey; |
546 | |
547 | if (feof(stio->ifp)) |
548 | (void)fseek (stio->ifp, 0L, 2); /* ultrix 1.2 workaround */ |
549 | |
550 | return ftell(stio->ifp); |
551 | |
552 | phooey: |
553 | if (dowarn) |
554 | warn("tell() on unopened file"); |
555 | return -1L; |
556 | } |
557 | |
558 | bool |
559 | do_seek(stab, pos, whence) |
560 | STAB *stab; |
561 | long pos; |
562 | int whence; |
563 | { |
564 | register STIO *stio; |
565 | |
566 | if (!stab) |
567 | goto nuts; |
568 | |
569 | stio = stab_io(stab); |
570 | if (!stio || !stio->ifp) |
571 | goto nuts; |
572 | |
573 | if (feof(stio->ifp)) |
574 | (void)fseek (stio->ifp, 0L, 2); /* ultrix 1.2 workaround */ |
575 | |
576 | return fseek(stio->ifp, pos, whence) >= 0; |
577 | |
578 | nuts: |
579 | if (dowarn) |
580 | warn("seek() on unopened file"); |
581 | return FALSE; |
582 | } |
583 | |
584 | int |
585 | do_ctl(optype,stab,func,argstr) |
586 | int optype; |
587 | STAB *stab; |
588 | int func; |
589 | STR *argstr; |
590 | { |
591 | register STIO *stio; |
592 | register char *s; |
593 | int retval; |
594 | |
595 | if (!stab || !argstr) |
596 | return -1; |
597 | stio = stab_io(stab); |
598 | if (!stio) |
599 | return -1; |
600 | |
601 | if (argstr->str_pok || !argstr->str_nok) { |
602 | if (!argstr->str_pok) |
603 | s = str_get(argstr); |
604 | |
605 | #ifdef IOCPARM_MASK |
606 | #ifndef IOCPARM_LEN |
607 | #define IOCPARM_LEN(x) (((x) >> 16) & IOCPARM_MASK) |
608 | #endif |
609 | #endif |
610 | #ifdef IOCPARM_LEN |
611 | retval = IOCPARM_LEN(func); /* on BSDish systes we're safe */ |
612 | #else |
613 | retval = 256; /* otherwise guess at what's safe */ |
614 | #endif |
615 | if (argstr->str_cur < retval) { |
ff8e2863 |
616 | Str_Grow(argstr,retval+1); |
a687059c |
617 | argstr->str_cur = retval; |
618 | } |
619 | |
620 | s = argstr->str_ptr; |
621 | s[argstr->str_cur] = 17; /* a little sanity check here */ |
622 | } |
623 | else { |
624 | retval = (int)str_gnum(argstr); |
c2ab57d4 |
625 | #ifdef MSDOS |
626 | s = (char*)(long)retval; /* ouch */ |
627 | #else |
a687059c |
628 | s = (char*)retval; /* ouch */ |
c2ab57d4 |
629 | #endif |
a687059c |
630 | } |
631 | |
632 | #ifndef lint |
633 | if (optype == O_IOCTL) |
634 | retval = ioctl(fileno(stio->ifp), func, s); |
635 | else |
57ebbfd0 |
636 | #ifdef MSDOS |
637 | fatal("fcntl is not implemented"); |
638 | #else |
fe14fcc3 |
639 | #ifdef HAS_FCNTL |
a687059c |
640 | retval = fcntl(fileno(stio->ifp), func, s); |
641 | #else |
642 | fatal("fcntl is not implemented"); |
643 | #endif |
57ebbfd0 |
644 | #endif |
a687059c |
645 | #else /* lint */ |
646 | retval = 0; |
647 | #endif /* lint */ |
648 | |
649 | if (argstr->str_pok) { |
650 | if (s[argstr->str_cur] != 17) |
651 | fatal("Return value overflowed string"); |
652 | s[argstr->str_cur] = 0; /* put our null back */ |
653 | } |
654 | return retval; |
655 | } |
656 | |
657 | int |
658 | do_stat(str,arg,gimme,arglast) |
659 | STR *str; |
660 | register ARG *arg; |
661 | int gimme; |
662 | int *arglast; |
663 | { |
664 | register ARRAY *ary = stack; |
665 | register int sp = arglast[0] + 1; |
666 | int max = 13; |
a687059c |
667 | |
668 | if ((arg[1].arg_type & A_MASK) == A_WORD) { |
669 | tmpstab = arg[1].arg_ptr.arg_stab; |
670 | if (tmpstab != defstab) { |
fe14fcc3 |
671 | laststype = O_STAT; |
a687059c |
672 | statstab = tmpstab; |
673 | str_set(statname,""); |
c2ab57d4 |
674 | if (!stab_io(tmpstab) || !stab_io(tmpstab)->ifp || |
a687059c |
675 | fstat(fileno(stab_io(tmpstab)->ifp),&statcache) < 0) { |
676 | max = 0; |
57ebbfd0 |
677 | laststatval = -1; |
a687059c |
678 | } |
679 | } |
57ebbfd0 |
680 | else if (laststatval < 0) |
681 | max = 0; |
a687059c |
682 | } |
683 | else { |
c623bd54 |
684 | str_set(statname,str_get(ary->ary_array[sp])); |
a687059c |
685 | statstab = Nullstab; |
fe14fcc3 |
686 | #ifdef HAS_LSTAT |
687 | laststype = arg->arg_type; |
a687059c |
688 | if (arg->arg_type == O_LSTAT) |
57ebbfd0 |
689 | laststatval = lstat(str_get(statname),&statcache); |
a687059c |
690 | else |
691 | #endif |
57ebbfd0 |
692 | laststatval = stat(str_get(statname),&statcache); |
693 | if (laststatval < 0) |
a687059c |
694 | max = 0; |
695 | } |
696 | |
697 | if (gimme != G_ARRAY) { |
698 | if (max) |
699 | str_sset(str,&str_yes); |
700 | else |
701 | str_sset(str,&str_undef); |
702 | STABSET(str); |
703 | ary->ary_array[sp] = str; |
704 | return sp; |
705 | } |
706 | sp--; |
707 | if (max) { |
708 | #ifndef lint |
709 | (void)astore(ary,++sp, |
fe14fcc3 |
710 | str_2mortal(str_nmake((double)statcache.st_dev))); |
a687059c |
711 | (void)astore(ary,++sp, |
fe14fcc3 |
712 | str_2mortal(str_nmake((double)statcache.st_ino))); |
a687059c |
713 | (void)astore(ary,++sp, |
fe14fcc3 |
714 | str_2mortal(str_nmake((double)statcache.st_mode))); |
a687059c |
715 | (void)astore(ary,++sp, |
fe14fcc3 |
716 | str_2mortal(str_nmake((double)statcache.st_nlink))); |
a687059c |
717 | (void)astore(ary,++sp, |
fe14fcc3 |
718 | str_2mortal(str_nmake((double)statcache.st_uid))); |
a687059c |
719 | (void)astore(ary,++sp, |
fe14fcc3 |
720 | str_2mortal(str_nmake((double)statcache.st_gid))); |
a687059c |
721 | (void)astore(ary,++sp, |
fe14fcc3 |
722 | str_2mortal(str_nmake((double)statcache.st_rdev))); |
a687059c |
723 | (void)astore(ary,++sp, |
fe14fcc3 |
724 | str_2mortal(str_nmake((double)statcache.st_size))); |
a687059c |
725 | (void)astore(ary,++sp, |
fe14fcc3 |
726 | str_2mortal(str_nmake((double)statcache.st_atime))); |
a687059c |
727 | (void)astore(ary,++sp, |
fe14fcc3 |
728 | str_2mortal(str_nmake((double)statcache.st_mtime))); |
a687059c |
729 | (void)astore(ary,++sp, |
fe14fcc3 |
730 | str_2mortal(str_nmake((double)statcache.st_ctime))); |
a687059c |
731 | #ifdef STATBLOCKS |
732 | (void)astore(ary,++sp, |
fe14fcc3 |
733 | str_2mortal(str_nmake((double)statcache.st_blksize))); |
a687059c |
734 | (void)astore(ary,++sp, |
fe14fcc3 |
735 | str_2mortal(str_nmake((double)statcache.st_blocks))); |
a687059c |
736 | #else |
737 | (void)astore(ary,++sp, |
fe14fcc3 |
738 | str_2mortal(str_make("",0))); |
a687059c |
739 | (void)astore(ary,++sp, |
fe14fcc3 |
740 | str_2mortal(str_make("",0))); |
a687059c |
741 | #endif |
742 | #else /* lint */ |
743 | (void)astore(ary,++sp,str_nmake(0.0)); |
744 | #endif /* lint */ |
745 | } |
746 | return sp; |
747 | } |
748 | |
fe14fcc3 |
749 | #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP) |
c2ab57d4 |
750 | /* code courtesy of William Kucharski */ |
fe14fcc3 |
751 | #define HAS_CHSIZE |
6eb13c3b |
752 | |
753 | int chsize(fd, length) |
754 | int fd; /* file descriptor */ |
755 | off_t length; /* length to set file to */ |
756 | { |
757 | extern long lseek(); |
758 | struct flock fl; |
759 | struct stat filebuf; |
760 | |
761 | if (fstat(fd, &filebuf) < 0) |
762 | return -1; |
763 | |
764 | if (filebuf.st_size < length) { |
765 | |
766 | /* extend file length */ |
767 | |
768 | if ((lseek(fd, (length - 1), 0)) < 0) |
769 | return -1; |
770 | |
771 | /* write a "0" byte */ |
772 | |
773 | if ((write(fd, "", 1)) != 1) |
774 | return -1; |
775 | } |
776 | else { |
777 | /* truncate length */ |
778 | |
779 | fl.l_whence = 0; |
780 | fl.l_len = 0; |
781 | fl.l_start = length; |
782 | fl.l_type = F_WRLCK; /* write lock on file space */ |
783 | |
784 | /* |
785 | * This relies on the UNDOCUMENTED F_FREESP argument to |
786 | * fcntl(2), which truncates the file so that it ends at the |
787 | * position indicated by fl.l_start. |
788 | * |
789 | * Will minor miracles never cease? |
790 | */ |
791 | |
792 | if (fcntl(fd, F_FREESP, &fl) < 0) |
793 | return -1; |
794 | |
795 | } |
796 | |
797 | return 0; |
798 | } |
799 | #endif /* F_FREESP */ |
800 | |
a687059c |
801 | int |
ff8e2863 |
802 | do_truncate(str,arg,gimme,arglast) |
803 | STR *str; |
804 | register ARG *arg; |
805 | int gimme; |
806 | int *arglast; |
807 | { |
808 | register ARRAY *ary = stack; |
809 | register int sp = arglast[0] + 1; |
810 | off_t len = (off_t)str_gnum(ary->ary_array[sp+1]); |
811 | int result = 1; |
812 | STAB *tmpstab; |
813 | |
fe14fcc3 |
814 | #if defined(HAS_TRUNCATE) || defined(HAS_CHSIZE) |
815 | #ifdef HAS_TRUNCATE |
ff8e2863 |
816 | if ((arg[1].arg_type & A_MASK) == A_WORD) { |
817 | tmpstab = arg[1].arg_ptr.arg_stab; |
818 | if (!stab_io(tmpstab) || |
819 | ftruncate(fileno(stab_io(tmpstab)->ifp), len) < 0) |
820 | result = 0; |
821 | } |
822 | else if (truncate(str_get(ary->ary_array[sp]), len) < 0) |
823 | result = 0; |
824 | #else |
ff8e2863 |
825 | if ((arg[1].arg_type & A_MASK) == A_WORD) { |
826 | tmpstab = arg[1].arg_ptr.arg_stab; |
827 | if (!stab_io(tmpstab) || |
828 | chsize(fileno(stab_io(tmpstab)->ifp), len) < 0) |
829 | result = 0; |
830 | } |
831 | else { |
832 | int tmpfd; |
833 | |
834 | if ((tmpfd = open(str_get(ary->ary_array[sp]), 0)) < 0) |
835 | result = 0; |
836 | else { |
837 | if (chsize(tmpfd, len) < 0) |
838 | result = 0; |
839 | close(tmpfd); |
840 | } |
841 | } |
842 | #endif |
843 | |
844 | if (result) |
845 | str_sset(str,&str_yes); |
846 | else |
847 | str_sset(str,&str_undef); |
848 | STABSET(str); |
849 | ary->ary_array[sp] = str; |
850 | return sp; |
851 | #else |
852 | fatal("truncate not implemented"); |
853 | #endif |
854 | } |
855 | |
856 | int |
a687059c |
857 | looks_like_number(str) |
858 | STR *str; |
859 | { |
860 | register char *s; |
861 | register char *send; |
862 | |
863 | if (!str->str_pok) |
864 | return TRUE; |
865 | s = str->str_ptr; |
866 | send = s + str->str_cur; |
867 | while (isspace(*s)) |
868 | s++; |
869 | if (s >= send) |
870 | return FALSE; |
871 | if (*s == '+' || *s == '-') |
872 | s++; |
873 | while (isdigit(*s)) |
874 | s++; |
875 | if (s == send) |
876 | return TRUE; |
877 | if (*s == '.') |
878 | s++; |
879 | else if (s == str->str_ptr) |
880 | return FALSE; |
881 | while (isdigit(*s)) |
882 | s++; |
883 | if (s == send) |
884 | return TRUE; |
885 | if (*s == 'e' || *s == 'E') { |
886 | s++; |
887 | if (*s == '+' || *s == '-') |
888 | s++; |
889 | while (isdigit(*s)) |
890 | s++; |
891 | } |
892 | while (isspace(*s)) |
893 | s++; |
894 | if (s >= send) |
895 | return TRUE; |
896 | return FALSE; |
897 | } |
898 | |
899 | bool |
900 | do_print(str,fp) |
901 | register STR *str; |
902 | FILE *fp; |
903 | { |
904 | register char *tmps; |
905 | |
906 | if (!fp) { |
907 | if (dowarn) |
908 | warn("print to unopened file"); |
909 | return FALSE; |
910 | } |
911 | if (!str) |
ff8e2863 |
912 | return TRUE; |
a687059c |
913 | if (ofmt && |
914 | ((str->str_nok && str->str_u.str_nval != 0.0) |
ff8e2863 |
915 | || (looks_like_number(str) && str_gnum(str) != 0.0) ) ) { |
a687059c |
916 | fprintf(fp, ofmt, str->str_u.str_nval); |
ff8e2863 |
917 | return !ferror(fp); |
918 | } |
a687059c |
919 | else { |
920 | tmps = str_get(str); |
c2ab57d4 |
921 | if (*tmps == 'S' && tmps[1] == 't' && tmps[2] == 'B' && tmps[3] == '\0' |
a687059c |
922 | && str->str_cur == sizeof(STBP) && strlen(tmps) < str->str_cur) { |
fe14fcc3 |
923 | STR *tmpstr = str_mortal(&str_undef); |
c2ab57d4 |
924 | stab_fullname(tmpstr,((STAB*)str));/* a stab value, be nice */ |
925 | str = tmpstr; |
926 | tmps = str->str_ptr; |
a687059c |
927 | putc('*',fp); |
928 | } |
ff8e2863 |
929 | if (str->str_cur && (fwrite(tmps,1,str->str_cur,fp) == 0 || ferror(fp))) |
a687059c |
930 | return FALSE; |
931 | } |
932 | return TRUE; |
933 | } |
934 | |
935 | bool |
936 | do_aprint(arg,fp,arglast) |
937 | register ARG *arg; |
938 | register FILE *fp; |
939 | int *arglast; |
940 | { |
941 | register STR **st = stack->ary_array; |
942 | register int sp = arglast[1]; |
943 | register int retval; |
944 | register int items = arglast[2] - sp; |
945 | |
946 | if (!fp) { |
947 | if (dowarn) |
948 | warn("print to unopened file"); |
949 | return FALSE; |
950 | } |
951 | st += ++sp; |
952 | if (arg->arg_type == O_PRTF) { |
953 | do_sprintf(arg->arg_ptr.arg_str,items,st); |
954 | retval = do_print(arg->arg_ptr.arg_str,fp); |
955 | } |
956 | else { |
957 | retval = (items <= 0); |
958 | for (; items > 0; items--,st++) { |
959 | if (retval && ofslen) { |
ff8e2863 |
960 | if (fwrite(ofs, 1, ofslen, fp) == 0 || ferror(fp)) { |
a687059c |
961 | retval = FALSE; |
962 | break; |
963 | } |
964 | } |
965 | if (!(retval = do_print(*st, fp))) |
966 | break; |
967 | } |
968 | if (retval && orslen) |
ff8e2863 |
969 | if (fwrite(ors, 1, orslen, fp) == 0 || ferror(fp)) |
a687059c |
970 | retval = FALSE; |
971 | } |
972 | return retval; |
973 | } |
974 | |
975 | int |
976 | mystat(arg,str) |
977 | ARG *arg; |
978 | STR *str; |
979 | { |
980 | STIO *stio; |
981 | |
fe14fcc3 |
982 | laststype = O_STAT; |
a687059c |
983 | if (arg[1].arg_type & A_DONT) { |
984 | stio = stab_io(arg[1].arg_ptr.arg_stab); |
985 | if (stio && stio->ifp) { |
986 | statstab = arg[1].arg_ptr.arg_stab; |
987 | str_set(statname,""); |
57ebbfd0 |
988 | return (laststatval = fstat(fileno(stio->ifp), &statcache)); |
a687059c |
989 | } |
990 | else { |
991 | if (arg[1].arg_ptr.arg_stab == defstab) |
57ebbfd0 |
992 | return laststatval; |
a687059c |
993 | if (dowarn) |
994 | warn("Stat on unopened file <%s>", |
995 | stab_name(arg[1].arg_ptr.arg_stab)); |
996 | statstab = Nullstab; |
997 | str_set(statname,""); |
57ebbfd0 |
998 | return (laststatval = -1); |
a687059c |
999 | } |
1000 | } |
1001 | else { |
1002 | statstab = Nullstab; |
c623bd54 |
1003 | str_set(statname,str_get(str)); |
57ebbfd0 |
1004 | return (laststatval = stat(str_get(str),&statcache)); |
a687059c |
1005 | } |
1006 | } |
1007 | |
c623bd54 |
1008 | int |
1009 | mylstat(arg,str) |
1010 | ARG *arg; |
1011 | STR *str; |
1012 | { |
fe14fcc3 |
1013 | if (arg[1].arg_type & A_DONT) { |
1014 | if (arg[1].arg_ptr.arg_stab == defstab) { |
1015 | if (laststype != O_LSTAT) |
1016 | fatal("The stat preceding -l _ wasn't an lstat"); |
1017 | return laststatval; |
1018 | } |
1019 | fatal("You can't use -l on a filehandle"); |
1020 | } |
c623bd54 |
1021 | |
fe14fcc3 |
1022 | laststype = O_LSTAT; |
c623bd54 |
1023 | statstab = Nullstab; |
1024 | str_set(statname,str_get(str)); |
fe14fcc3 |
1025 | #ifdef HAS_LSTAT |
c623bd54 |
1026 | return (laststatval = lstat(str_get(str),&statcache)); |
1027 | #else |
1028 | return (laststatval = stat(str_get(str),&statcache)); |
1029 | #endif |
1030 | } |
1031 | |
a687059c |
1032 | STR * |
1033 | do_fttext(arg,str) |
1034 | register ARG *arg; |
1035 | STR *str; |
1036 | { |
1037 | int i; |
1038 | int len; |
1039 | int odd = 0; |
1040 | STDCHAR tbuf[512]; |
1041 | register STDCHAR *s; |
1042 | register STIO *stio; |
1043 | |
1044 | if (arg[1].arg_type & A_DONT) { |
1045 | if (arg[1].arg_ptr.arg_stab == defstab) { |
1046 | if (statstab) |
1047 | stio = stab_io(statstab); |
1048 | else { |
1049 | str = statname; |
1050 | goto really_filename; |
1051 | } |
1052 | } |
1053 | else { |
1054 | statstab = arg[1].arg_ptr.arg_stab; |
1055 | str_set(statname,""); |
1056 | stio = stab_io(statstab); |
1057 | } |
1058 | if (stio && stio->ifp) { |
1059 | #ifdef STDSTDIO |
1060 | fstat(fileno(stio->ifp),&statcache); |
1061 | if (stio->ifp->_cnt <= 0) { |
1062 | i = getc(stio->ifp); |
1063 | if (i != EOF) |
1064 | (void)ungetc(i,stio->ifp); |
1065 | } |
1066 | if (stio->ifp->_cnt <= 0) /* null file is anything */ |
1067 | return &str_yes; |
1068 | len = stio->ifp->_cnt + (stio->ifp->_ptr - stio->ifp->_base); |
1069 | s = stio->ifp->_base; |
1070 | #else |
1071 | fatal("-T and -B not implemented on filehandles\n"); |
1072 | #endif |
1073 | } |
1074 | else { |
1075 | if (dowarn) |
1076 | warn("Test on unopened file <%s>", |
1077 | stab_name(arg[1].arg_ptr.arg_stab)); |
1078 | return &str_undef; |
1079 | } |
1080 | } |
1081 | else { |
1082 | statstab = Nullstab; |
c623bd54 |
1083 | str_set(statname,str_get(str)); |
a687059c |
1084 | really_filename: |
1085 | i = open(str_get(str),0); |
1086 | if (i < 0) |
1087 | return &str_undef; |
1088 | fstat(i,&statcache); |
1089 | len = read(i,tbuf,512); |
fe14fcc3 |
1090 | (void)close(i); |
a687059c |
1091 | if (len <= 0) /* null file is anything */ |
1092 | return &str_yes; |
a687059c |
1093 | s = tbuf; |
1094 | } |
1095 | |
1096 | /* now scan s to look for textiness */ |
1097 | |
1098 | for (i = 0; i < len; i++,s++) { |
1099 | if (!*s) { /* null never allowed in text */ |
1100 | odd += len; |
1101 | break; |
1102 | } |
1103 | else if (*s & 128) |
1104 | odd++; |
1105 | else if (*s < 32 && |
1106 | *s != '\n' && *s != '\r' && *s != '\b' && |
1107 | *s != '\t' && *s != '\f' && *s != 27) |
1108 | odd++; |
1109 | } |
1110 | |
1111 | if ((odd * 10 > len) == (arg->arg_type == O_FTTEXT)) /* allow 10% odd */ |
1112 | return &str_no; |
1113 | else |
1114 | return &str_yes; |
1115 | } |
1116 | |
1117 | bool |
1118 | do_aexec(really,arglast) |
1119 | STR *really; |
1120 | int *arglast; |
1121 | { |
1122 | register STR **st = stack->ary_array; |
1123 | register int sp = arglast[1]; |
1124 | register int items = arglast[2] - sp; |
1125 | register char **a; |
1126 | char **argv; |
1127 | char *tmps; |
1128 | |
1129 | if (items) { |
1130 | New(401,argv, items+1, char*); |
1131 | a = argv; |
1132 | for (st += ++sp; items > 0; items--,st++) { |
1133 | if (*st) |
1134 | *a++ = str_get(*st); |
1135 | else |
1136 | *a++ = ""; |
1137 | } |
1138 | *a = Nullch; |
1139 | #ifdef TAINT |
1140 | if (*argv[0] != '/') /* will execvp use PATH? */ |
1141 | taintenv(); /* testing IFS here is overkill, probably */ |
1142 | #endif |
1143 | if (really && *(tmps = str_get(really))) |
1144 | execvp(tmps,argv); |
1145 | else |
1146 | execvp(argv[0],argv); |
1147 | Safefree(argv); |
1148 | } |
1149 | return FALSE; |
1150 | } |
1151 | |
ff8e2863 |
1152 | static char **Argv = Null(char **); |
1153 | static char *Cmd = Nullch; |
1154 | |
fe14fcc3 |
1155 | void |
ff8e2863 |
1156 | do_execfree() |
1157 | { |
1158 | if (Argv) { |
1159 | Safefree(Argv); |
1160 | Argv = Null(char **); |
1161 | } |
1162 | if (Cmd) { |
1163 | Safefree(Cmd); |
1164 | Cmd = Nullch; |
1165 | } |
1166 | } |
1167 | |
a687059c |
1168 | bool |
1169 | do_exec(cmd) |
1170 | char *cmd; |
1171 | { |
1172 | register char **a; |
1173 | register char *s; |
a687059c |
1174 | char flags[10]; |
1175 | |
1176 | #ifdef TAINT |
1177 | taintenv(); |
1178 | taintproper("Insecure dependency in exec"); |
1179 | #endif |
1180 | |
1181 | /* save an extra exec if possible */ |
1182 | |
bf38876a |
1183 | #ifdef CSH |
1184 | if (strnEQ(cmd,cshname,cshlen) && strnEQ(cmd+cshlen," -c",3)) { |
a687059c |
1185 | strcpy(flags,"-c"); |
bf38876a |
1186 | s = cmd+cshlen+3; |
a687059c |
1187 | if (*s == 'f') { |
1188 | s++; |
1189 | strcat(flags,"f"); |
1190 | } |
1191 | if (*s == ' ') |
1192 | s++; |
1193 | if (*s++ == '\'') { |
1194 | char *ncmd = s; |
1195 | |
1196 | while (*s) |
1197 | s++; |
1198 | if (s[-1] == '\n') |
1199 | *--s = '\0'; |
1200 | if (s[-1] == '\'') { |
1201 | *--s = '\0'; |
bf38876a |
1202 | execl(cshname,"csh", flags,ncmd,(char*)0); |
a687059c |
1203 | *s = '\''; |
1204 | return FALSE; |
1205 | } |
1206 | } |
1207 | } |
bf38876a |
1208 | #endif /* CSH */ |
a687059c |
1209 | |
1210 | /* see if there are shell metacharacters in it */ |
1211 | |
63f2c1e1 |
1212 | for (s = cmd; *s && isalpha(*s); s++) ; /* catch VAR=val gizmo */ |
1213 | if (*s == '=') |
1214 | goto doshell; |
a687059c |
1215 | for (s = cmd; *s; s++) { |
1216 | if (*s != ' ' && !isalpha(*s) && index("$&*(){}[]'\";\\|?<>~`\n",*s)) { |
1217 | if (*s == '\n' && !s[1]) { |
1218 | *s = '\0'; |
1219 | break; |
1220 | } |
1221 | doshell: |
1222 | execl("/bin/sh","sh","-c",cmd,(char*)0); |
1223 | return FALSE; |
1224 | } |
1225 | } |
ff8e2863 |
1226 | New(402,Argv, (s - cmd) / 2 + 2, char*); |
1227 | Cmd = nsavestr(cmd, s-cmd); |
1228 | a = Argv; |
1229 | for (s = Cmd; *s;) { |
a687059c |
1230 | while (*s && isspace(*s)) s++; |
1231 | if (*s) |
1232 | *(a++) = s; |
1233 | while (*s && !isspace(*s)) s++; |
1234 | if (*s) |
1235 | *s++ = '\0'; |
1236 | } |
1237 | *a = Nullch; |
ff8e2863 |
1238 | if (Argv[0]) { |
1239 | execvp(Argv[0],Argv); |
b1248f16 |
1240 | if (errno == ENOEXEC) { /* for system V NIH syndrome */ |
ff8e2863 |
1241 | do_execfree(); |
a687059c |
1242 | goto doshell; |
b1248f16 |
1243 | } |
a687059c |
1244 | } |
ff8e2863 |
1245 | do_execfree(); |
a687059c |
1246 | return FALSE; |
1247 | } |
1248 | |
fe14fcc3 |
1249 | #ifdef HAS_SOCKET |
a687059c |
1250 | int |
1251 | do_socket(stab, arglast) |
1252 | STAB *stab; |
1253 | int *arglast; |
1254 | { |
1255 | register STR **st = stack->ary_array; |
1256 | register int sp = arglast[1]; |
1257 | register STIO *stio; |
1258 | int domain, type, protocol, fd; |
1259 | |
1260 | if (!stab) |
1261 | return FALSE; |
1262 | |
1263 | stio = stab_io(stab); |
1264 | if (!stio) |
1265 | stio = stab_io(stab) = stio_new(); |
1266 | else if (stio->ifp) |
1267 | do_close(stab,FALSE); |
1268 | |
1269 | domain = (int)str_gnum(st[++sp]); |
1270 | type = (int)str_gnum(st[++sp]); |
1271 | protocol = (int)str_gnum(st[++sp]); |
1272 | #ifdef TAINT |
1273 | taintproper("Insecure dependency in socket"); |
1274 | #endif |
1275 | fd = socket(domain,type,protocol); |
1276 | if (fd < 0) |
1277 | return FALSE; |
1278 | stio->ifp = fdopen(fd, "r"); /* stdio gets confused about sockets */ |
1279 | stio->ofp = fdopen(fd, "w"); |
1280 | stio->type = 's'; |
fe14fcc3 |
1281 | if (!stio->ifp || !stio->ofp) { |
1282 | if (stio->ifp) fclose(stio->ifp); |
1283 | if (stio->ofp) fclose(stio->ofp); |
1284 | if (!stio->ifp && !stio->ofp) close(fd); |
1285 | return FALSE; |
1286 | } |
a687059c |
1287 | |
1288 | return TRUE; |
1289 | } |
1290 | |
1291 | int |
1292 | do_bind(stab, arglast) |
1293 | STAB *stab; |
1294 | int *arglast; |
1295 | { |
1296 | register STR **st = stack->ary_array; |
1297 | register int sp = arglast[1]; |
1298 | register STIO *stio; |
1299 | char *addr; |
1300 | |
1301 | if (!stab) |
1302 | goto nuts; |
1303 | |
1304 | stio = stab_io(stab); |
1305 | if (!stio || !stio->ifp) |
1306 | goto nuts; |
1307 | |
1308 | addr = str_get(st[++sp]); |
1309 | #ifdef TAINT |
1310 | taintproper("Insecure dependency in bind"); |
1311 | #endif |
1312 | return bind(fileno(stio->ifp), addr, st[sp]->str_cur) >= 0; |
1313 | |
1314 | nuts: |
1315 | if (dowarn) |
1316 | warn("bind() on closed fd"); |
1317 | return FALSE; |
1318 | |
1319 | } |
1320 | |
1321 | int |
1322 | do_connect(stab, arglast) |
1323 | STAB *stab; |
1324 | int *arglast; |
1325 | { |
1326 | register STR **st = stack->ary_array; |
1327 | register int sp = arglast[1]; |
1328 | register STIO *stio; |
1329 | char *addr; |
1330 | |
1331 | if (!stab) |
1332 | goto nuts; |
1333 | |
1334 | stio = stab_io(stab); |
1335 | if (!stio || !stio->ifp) |
1336 | goto nuts; |
1337 | |
1338 | addr = str_get(st[++sp]); |
1339 | #ifdef TAINT |
1340 | taintproper("Insecure dependency in connect"); |
1341 | #endif |
1342 | return connect(fileno(stio->ifp), addr, st[sp]->str_cur) >= 0; |
1343 | |
1344 | nuts: |
1345 | if (dowarn) |
1346 | warn("connect() on closed fd"); |
1347 | return FALSE; |
1348 | |
1349 | } |
1350 | |
1351 | int |
1352 | do_listen(stab, arglast) |
1353 | STAB *stab; |
1354 | int *arglast; |
1355 | { |
1356 | register STR **st = stack->ary_array; |
1357 | register int sp = arglast[1]; |
1358 | register STIO *stio; |
1359 | int backlog; |
1360 | |
1361 | if (!stab) |
1362 | goto nuts; |
1363 | |
1364 | stio = stab_io(stab); |
1365 | if (!stio || !stio->ifp) |
1366 | goto nuts; |
1367 | |
1368 | backlog = (int)str_gnum(st[++sp]); |
1369 | return listen(fileno(stio->ifp), backlog) >= 0; |
1370 | |
1371 | nuts: |
1372 | if (dowarn) |
1373 | warn("listen() on closed fd"); |
1374 | return FALSE; |
1375 | } |
1376 | |
1377 | void |
1378 | do_accept(str, nstab, gstab) |
1379 | STR *str; |
1380 | STAB *nstab; |
1381 | STAB *gstab; |
1382 | { |
1383 | register STIO *nstio; |
1384 | register STIO *gstio; |
1385 | int len = sizeof buf; |
1386 | int fd; |
1387 | |
1388 | if (!nstab) |
1389 | goto badexit; |
1390 | if (!gstab) |
1391 | goto nuts; |
1392 | |
1393 | gstio = stab_io(gstab); |
1394 | nstio = stab_io(nstab); |
1395 | |
1396 | if (!gstio || !gstio->ifp) |
1397 | goto nuts; |
1398 | if (!nstio) |
1399 | nstio = stab_io(nstab) = stio_new(); |
1400 | else if (nstio->ifp) |
1401 | do_close(nstab,FALSE); |
1402 | |
1403 | fd = accept(fileno(gstio->ifp),buf,&len); |
1404 | if (fd < 0) |
1405 | goto badexit; |
1406 | nstio->ifp = fdopen(fd, "r"); |
1407 | nstio->ofp = fdopen(fd, "w"); |
1408 | nstio->type = 's'; |
fe14fcc3 |
1409 | if (!nstio->ifp || !nstio->ofp) { |
1410 | if (nstio->ifp) fclose(nstio->ifp); |
1411 | if (nstio->ofp) fclose(nstio->ofp); |
1412 | if (!nstio->ifp && !nstio->ofp) close(fd); |
1413 | goto badexit; |
1414 | } |
a687059c |
1415 | |
1416 | str_nset(str, buf, len); |
1417 | return; |
1418 | |
1419 | nuts: |
1420 | if (dowarn) |
1421 | warn("accept() on closed fd"); |
1422 | badexit: |
1423 | str_sset(str,&str_undef); |
1424 | return; |
1425 | } |
1426 | |
1427 | int |
1428 | do_shutdown(stab, arglast) |
1429 | STAB *stab; |
1430 | int *arglast; |
1431 | { |
1432 | register STR **st = stack->ary_array; |
1433 | register int sp = arglast[1]; |
1434 | register STIO *stio; |
1435 | int how; |
1436 | |
1437 | if (!stab) |
1438 | goto nuts; |
1439 | |
1440 | stio = stab_io(stab); |
1441 | if (!stio || !stio->ifp) |
1442 | goto nuts; |
1443 | |
1444 | how = (int)str_gnum(st[++sp]); |
1445 | return shutdown(fileno(stio->ifp), how) >= 0; |
1446 | |
1447 | nuts: |
1448 | if (dowarn) |
1449 | warn("shutdown() on closed fd"); |
1450 | return FALSE; |
1451 | |
1452 | } |
1453 | |
1454 | int |
1455 | do_sopt(optype, stab, arglast) |
1456 | int optype; |
1457 | STAB *stab; |
1458 | int *arglast; |
1459 | { |
1460 | register STR **st = stack->ary_array; |
1461 | register int sp = arglast[1]; |
1462 | register STIO *stio; |
1463 | int fd; |
1464 | int lvl; |
1465 | int optname; |
1466 | |
1467 | if (!stab) |
1468 | goto nuts; |
1469 | |
1470 | stio = stab_io(stab); |
1471 | if (!stio || !stio->ifp) |
1472 | goto nuts; |
1473 | |
1474 | fd = fileno(stio->ifp); |
1475 | lvl = (int)str_gnum(st[sp+1]); |
1476 | optname = (int)str_gnum(st[sp+2]); |
1477 | switch (optype) { |
1478 | case O_GSOCKOPT: |
fe14fcc3 |
1479 | st[sp] = str_2mortal(str_new(257)); |
a687059c |
1480 | st[sp]->str_cur = 256; |
bf38876a |
1481 | st[sp]->str_pok = 1; |
a687059c |
1482 | if (getsockopt(fd, lvl, optname, st[sp]->str_ptr, &st[sp]->str_cur) < 0) |
1483 | goto nuts; |
1484 | break; |
1485 | case O_SSOCKOPT: |
1486 | st[sp] = st[sp+3]; |
1487 | if (setsockopt(fd, lvl, optname, st[sp]->str_ptr, st[sp]->str_cur) < 0) |
1488 | goto nuts; |
1489 | st[sp] = &str_yes; |
1490 | break; |
1491 | } |
1492 | |
1493 | return sp; |
1494 | |
1495 | nuts: |
1496 | if (dowarn) |
bf38876a |
1497 | warn("[gs]etsockopt() on closed fd"); |
a687059c |
1498 | st[sp] = &str_undef; |
1499 | return sp; |
1500 | |
1501 | } |
1502 | |
1503 | int |
1504 | do_getsockname(optype, stab, arglast) |
1505 | int optype; |
1506 | STAB *stab; |
1507 | int *arglast; |
1508 | { |
1509 | register STR **st = stack->ary_array; |
1510 | register int sp = arglast[1]; |
1511 | register STIO *stio; |
1512 | int fd; |
1513 | |
1514 | if (!stab) |
1515 | goto nuts; |
1516 | |
1517 | stio = stab_io(stab); |
1518 | if (!stio || !stio->ifp) |
1519 | goto nuts; |
1520 | |
fe14fcc3 |
1521 | st[sp] = str_2mortal(str_new(257)); |
a687059c |
1522 | st[sp]->str_cur = 256; |
bf38876a |
1523 | st[sp]->str_pok = 1; |
a687059c |
1524 | fd = fileno(stio->ifp); |
1525 | switch (optype) { |
1526 | case O_GETSOCKNAME: |
1527 | if (getsockname(fd, st[sp]->str_ptr, &st[sp]->str_cur) < 0) |
ff8e2863 |
1528 | goto nuts2; |
a687059c |
1529 | break; |
1530 | case O_GETPEERNAME: |
1531 | if (getpeername(fd, st[sp]->str_ptr, &st[sp]->str_cur) < 0) |
ff8e2863 |
1532 | goto nuts2; |
a687059c |
1533 | break; |
1534 | } |
1535 | |
1536 | return sp; |
1537 | |
1538 | nuts: |
1539 | if (dowarn) |
bf38876a |
1540 | warn("get{sock,peer}name() on closed fd"); |
ff8e2863 |
1541 | nuts2: |
a687059c |
1542 | st[sp] = &str_undef; |
1543 | return sp; |
1544 | |
1545 | } |
1546 | |
1547 | int |
1548 | do_ghent(which,gimme,arglast) |
1549 | int which; |
1550 | int gimme; |
1551 | int *arglast; |
1552 | { |
1553 | register ARRAY *ary = stack; |
1554 | register int sp = arglast[0]; |
1555 | register char **elem; |
1556 | register STR *str; |
bf38876a |
1557 | struct hostent *gethostbyname(); |
a687059c |
1558 | struct hostent *gethostbyaddr(); |
fe14fcc3 |
1559 | #ifdef HAS_GETHOSTENT |
a687059c |
1560 | struct hostent *gethostent(); |
1561 | #endif |
1562 | struct hostent *hent; |
1563 | unsigned long len; |
1564 | |
1565 | if (gimme != G_ARRAY) { |
fe14fcc3 |
1566 | astore(ary, ++sp, str_mortal(&str_undef)); |
a687059c |
1567 | return sp; |
1568 | } |
1569 | |
1570 | if (which == O_GHBYNAME) { |
1571 | char *name = str_get(ary->ary_array[sp+1]); |
1572 | |
1573 | hent = gethostbyname(name); |
1574 | } |
1575 | else if (which == O_GHBYADDR) { |
1576 | STR *addrstr = ary->ary_array[sp+1]; |
1577 | int addrtype = (int)str_gnum(ary->ary_array[sp+2]); |
1578 | char *addr = str_get(addrstr); |
1579 | |
1580 | hent = gethostbyaddr(addr,addrstr->str_cur,addrtype); |
1581 | } |
1582 | else |
fe14fcc3 |
1583 | #ifdef HAS_GETHOSTENT |
a687059c |
1584 | hent = gethostent(); |
1585 | #else |
1586 | fatal("gethostent not implemented"); |
1587 | #endif |
1588 | if (hent) { |
1589 | #ifndef lint |
fe14fcc3 |
1590 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
1591 | str_set(str, hent->h_name); |
fe14fcc3 |
1592 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
1593 | for (elem = hent->h_aliases; *elem; elem++) { |
1594 | str_cat(str, *elem); |
1595 | if (elem[1]) |
1596 | str_ncat(str," ",1); |
1597 | } |
fe14fcc3 |
1598 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
1599 | str_numset(str, (double)hent->h_addrtype); |
fe14fcc3 |
1600 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
1601 | len = hent->h_length; |
1602 | str_numset(str, (double)len); |
1603 | #ifdef h_addr |
1604 | for (elem = hent->h_addr_list; *elem; elem++) { |
fe14fcc3 |
1605 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
1606 | str_nset(str, *elem, len); |
1607 | } |
1608 | #else |
fe14fcc3 |
1609 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
1610 | str_nset(str, hent->h_addr, len); |
1611 | #endif /* h_addr */ |
1612 | #else /* lint */ |
1613 | elem = Nullch; |
1614 | elem = elem; |
fe14fcc3 |
1615 | (void)astore(ary, ++sp, str_mortal(&str_no)); |
a687059c |
1616 | #endif /* lint */ |
1617 | } |
1618 | |
1619 | return sp; |
1620 | } |
1621 | |
1622 | int |
1623 | do_gnent(which,gimme,arglast) |
1624 | int which; |
1625 | int gimme; |
1626 | int *arglast; |
1627 | { |
1628 | register ARRAY *ary = stack; |
1629 | register int sp = arglast[0]; |
1630 | register char **elem; |
1631 | register STR *str; |
1632 | struct netent *getnetbyname(); |
1633 | struct netent *getnetbyaddr(); |
1634 | struct netent *getnetent(); |
1635 | struct netent *nent; |
1636 | |
1637 | if (gimme != G_ARRAY) { |
fe14fcc3 |
1638 | astore(ary, ++sp, str_mortal(&str_undef)); |
a687059c |
1639 | return sp; |
1640 | } |
1641 | |
1642 | if (which == O_GNBYNAME) { |
1643 | char *name = str_get(ary->ary_array[sp+1]); |
1644 | |
1645 | nent = getnetbyname(name); |
1646 | } |
1647 | else if (which == O_GNBYADDR) { |
fe14fcc3 |
1648 | unsigned long addr = U_L(str_gnum(ary->ary_array[sp+1])); |
a687059c |
1649 | int addrtype = (int)str_gnum(ary->ary_array[sp+2]); |
a687059c |
1650 | |
fe14fcc3 |
1651 | nent = getnetbyaddr((long)addr,addrtype); |
a687059c |
1652 | } |
1653 | else |
1654 | nent = getnetent(); |
1655 | |
1656 | if (nent) { |
1657 | #ifndef lint |
fe14fcc3 |
1658 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
1659 | str_set(str, nent->n_name); |
fe14fcc3 |
1660 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
1661 | for (elem = nent->n_aliases; *elem; elem++) { |
1662 | str_cat(str, *elem); |
1663 | if (elem[1]) |
1664 | str_ncat(str," ",1); |
1665 | } |
fe14fcc3 |
1666 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
1667 | str_numset(str, (double)nent->n_addrtype); |
fe14fcc3 |
1668 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
1669 | str_numset(str, (double)nent->n_net); |
1670 | #else /* lint */ |
1671 | elem = Nullch; |
1672 | elem = elem; |
fe14fcc3 |
1673 | (void)astore(ary, ++sp, str_mortal(&str_no)); |
a687059c |
1674 | #endif /* lint */ |
1675 | } |
1676 | |
1677 | return sp; |
1678 | } |
1679 | |
1680 | int |
1681 | do_gpent(which,gimme,arglast) |
1682 | int which; |
1683 | int gimme; |
1684 | int *arglast; |
1685 | { |
1686 | register ARRAY *ary = stack; |
1687 | register int sp = arglast[0]; |
1688 | register char **elem; |
1689 | register STR *str; |
1690 | struct protoent *getprotobyname(); |
1691 | struct protoent *getprotobynumber(); |
1692 | struct protoent *getprotoent(); |
1693 | struct protoent *pent; |
1694 | |
1695 | if (gimme != G_ARRAY) { |
fe14fcc3 |
1696 | astore(ary, ++sp, str_mortal(&str_undef)); |
a687059c |
1697 | return sp; |
1698 | } |
1699 | |
1700 | if (which == O_GPBYNAME) { |
1701 | char *name = str_get(ary->ary_array[sp+1]); |
1702 | |
1703 | pent = getprotobyname(name); |
1704 | } |
1705 | else if (which == O_GPBYNUMBER) { |
1706 | int proto = (int)str_gnum(ary->ary_array[sp+1]); |
1707 | |
1708 | pent = getprotobynumber(proto); |
1709 | } |
1710 | else |
1711 | pent = getprotoent(); |
1712 | |
1713 | if (pent) { |
1714 | #ifndef lint |
fe14fcc3 |
1715 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
1716 | str_set(str, pent->p_name); |
fe14fcc3 |
1717 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
1718 | for (elem = pent->p_aliases; *elem; elem++) { |
1719 | str_cat(str, *elem); |
1720 | if (elem[1]) |
1721 | str_ncat(str," ",1); |
1722 | } |
fe14fcc3 |
1723 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
1724 | str_numset(str, (double)pent->p_proto); |
1725 | #else /* lint */ |
1726 | elem = Nullch; |
1727 | elem = elem; |
fe14fcc3 |
1728 | (void)astore(ary, ++sp, str_mortal(&str_no)); |
a687059c |
1729 | #endif /* lint */ |
1730 | } |
1731 | |
1732 | return sp; |
1733 | } |
1734 | |
1735 | int |
1736 | do_gsent(which,gimme,arglast) |
1737 | int which; |
1738 | int gimme; |
1739 | int *arglast; |
1740 | { |
1741 | register ARRAY *ary = stack; |
1742 | register int sp = arglast[0]; |
1743 | register char **elem; |
1744 | register STR *str; |
1745 | struct servent *getservbyname(); |
1746 | struct servent *getservbynumber(); |
1747 | struct servent *getservent(); |
1748 | struct servent *sent; |
1749 | |
1750 | if (gimme != G_ARRAY) { |
fe14fcc3 |
1751 | astore(ary, ++sp, str_mortal(&str_undef)); |
a687059c |
1752 | return sp; |
1753 | } |
1754 | |
1755 | if (which == O_GSBYNAME) { |
1756 | char *name = str_get(ary->ary_array[sp+1]); |
1757 | char *proto = str_get(ary->ary_array[sp+2]); |
1758 | |
1759 | if (proto && !*proto) |
1760 | proto = Nullch; |
1761 | |
1762 | sent = getservbyname(name,proto); |
1763 | } |
1764 | else if (which == O_GSBYPORT) { |
1765 | int port = (int)str_gnum(ary->ary_array[sp+1]); |
1766 | char *proto = str_get(ary->ary_array[sp+2]); |
1767 | |
1768 | sent = getservbyport(port,proto); |
1769 | } |
1770 | else |
1771 | sent = getservent(); |
1772 | if (sent) { |
1773 | #ifndef lint |
fe14fcc3 |
1774 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
1775 | str_set(str, sent->s_name); |
fe14fcc3 |
1776 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
1777 | for (elem = sent->s_aliases; *elem; elem++) { |
1778 | str_cat(str, *elem); |
1779 | if (elem[1]) |
1780 | str_ncat(str," ",1); |
1781 | } |
fe14fcc3 |
1782 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
1783 | #ifdef HAS_NTOHS |
a687059c |
1784 | str_numset(str, (double)ntohs(sent->s_port)); |
1785 | #else |
1786 | str_numset(str, (double)(sent->s_port)); |
1787 | #endif |
fe14fcc3 |
1788 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
1789 | str_set(str, sent->s_proto); |
1790 | #else /* lint */ |
1791 | elem = Nullch; |
1792 | elem = elem; |
fe14fcc3 |
1793 | (void)astore(ary, ++sp, str_mortal(&str_no)); |
a687059c |
1794 | #endif /* lint */ |
1795 | } |
1796 | |
1797 | return sp; |
1798 | } |
1799 | |
fe14fcc3 |
1800 | #endif /* HAS_SOCKET */ |
ff8e2863 |
1801 | |
fe14fcc3 |
1802 | #ifdef HAS_SELECT |
a687059c |
1803 | int |
1804 | do_select(gimme,arglast) |
1805 | int gimme; |
1806 | int *arglast; |
1807 | { |
1808 | register STR **st = stack->ary_array; |
1809 | register int sp = arglast[0]; |
1810 | register int i; |
1811 | register int j; |
1812 | register char *s; |
1813 | register STR *str; |
1814 | double value; |
1815 | int maxlen = 0; |
1816 | int nfound; |
1817 | struct timeval timebuf; |
1818 | struct timeval *tbuf = &timebuf; |
663a0e37 |
1819 | int growsize; |
1820 | #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678 |
1821 | int masksize; |
1822 | int offset; |
1823 | char *fd_sets[4]; |
1824 | int k; |
1825 | |
1826 | #if BYTEORDER & 0xf0000 |
1827 | #define ORDERBYTE (0x88888888 - BYTEORDER) |
1828 | #else |
1829 | #define ORDERBYTE (0x4444 - BYTEORDER) |
1830 | #endif |
1831 | |
1832 | #endif |
a687059c |
1833 | |
1834 | for (i = 1; i <= 3; i++) { |
663a0e37 |
1835 | j = st[sp+i]->str_cur; |
a687059c |
1836 | if (maxlen < j) |
1837 | maxlen = j; |
1838 | } |
663a0e37 |
1839 | |
1840 | #if BYTEORDER == 0x1234 || BYTEORDER == 0x12345678 |
1841 | growsize = maxlen; /* little endians can use vecs directly */ |
1842 | #else |
1843 | #ifdef NFDBITS |
1844 | |
1845 | #ifndef NBBY |
1846 | #define NBBY 8 |
1847 | #endif |
1848 | |
1849 | masksize = NFDBITS / NBBY; |
1850 | #else |
1851 | masksize = sizeof(long); /* documented int, everyone seems to use long */ |
1852 | #endif |
1853 | growsize = maxlen + (masksize - (maxlen % masksize)); |
1854 | Zero(&fd_sets[0], 4, char*); |
1855 | #endif |
1856 | |
a687059c |
1857 | for (i = 1; i <= 3; i++) { |
1858 | str = st[sp+i]; |
1859 | j = str->str_len; |
663a0e37 |
1860 | if (j < growsize) { |
a687059c |
1861 | if (str->str_pok) { |
ff8e2863 |
1862 | Str_Grow(str,growsize); |
a687059c |
1863 | s = str_get(str) + j; |
663a0e37 |
1864 | while (++j <= growsize) { |
a687059c |
1865 | *s++ = '\0'; |
1866 | } |
1867 | } |
1868 | else if (str->str_ptr) { |
1869 | Safefree(str->str_ptr); |
1870 | str->str_ptr = Nullch; |
1871 | } |
1872 | } |
663a0e37 |
1873 | #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678 |
1874 | s = str->str_ptr; |
1875 | if (s) { |
1876 | New(403, fd_sets[i], growsize, char); |
1877 | for (offset = 0; offset < growsize; offset += masksize) { |
1878 | for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4)) |
1879 | fd_sets[i][j+offset] = s[(k % masksize) + offset]; |
1880 | } |
1881 | } |
1882 | #endif |
a687059c |
1883 | } |
1884 | str = st[sp+4]; |
1885 | if (str->str_nok || str->str_pok) { |
1886 | value = str_gnum(str); |
1887 | if (value < 0.0) |
1888 | value = 0.0; |
1889 | timebuf.tv_sec = (long)value; |
1890 | value -= (double)timebuf.tv_sec; |
1891 | timebuf.tv_usec = (long)(value * 1000000.0); |
1892 | } |
1893 | else |
1894 | tbuf = Null(struct timeval*); |
1895 | |
663a0e37 |
1896 | #if BYTEORDER == 0x1234 || BYTEORDER == 0x12345678 |
a687059c |
1897 | nfound = select( |
1898 | maxlen * 8, |
1899 | st[sp+1]->str_ptr, |
1900 | st[sp+2]->str_ptr, |
1901 | st[sp+3]->str_ptr, |
1902 | tbuf); |
663a0e37 |
1903 | #else |
1904 | nfound = select( |
1905 | maxlen * 8, |
1906 | fd_sets[1], |
1907 | fd_sets[2], |
1908 | fd_sets[3], |
1909 | tbuf); |
1910 | for (i = 1; i <= 3; i++) { |
1911 | if (fd_sets[i]) { |
1912 | str = st[sp+i]; |
1913 | s = str->str_ptr; |
1914 | for (offset = 0; offset < growsize; offset += masksize) { |
1915 | for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4)) |
1916 | s[(k % masksize) + offset] = fd_sets[i][j+offset]; |
1917 | } |
1918 | } |
1919 | } |
1920 | #endif |
a687059c |
1921 | |
fe14fcc3 |
1922 | st[++sp] = str_mortal(&str_no); |
a687059c |
1923 | str_numset(st[sp], (double)nfound); |
1924 | if (gimme == G_ARRAY && tbuf) { |
1925 | value = (double)(timebuf.tv_sec) + |
1926 | (double)(timebuf.tv_usec) / 1000000.0; |
fe14fcc3 |
1927 | st[++sp] = str_mortal(&str_no); |
a687059c |
1928 | str_numset(st[sp], value); |
1929 | } |
1930 | return sp; |
1931 | } |
ff8e2863 |
1932 | #endif /* SELECT */ |
a687059c |
1933 | |
fe14fcc3 |
1934 | #ifdef HAS_SOCKET |
a687059c |
1935 | int |
1936 | do_spair(stab1, stab2, arglast) |
1937 | STAB *stab1; |
1938 | STAB *stab2; |
1939 | int *arglast; |
1940 | { |
1941 | register STR **st = stack->ary_array; |
1942 | register int sp = arglast[2]; |
1943 | register STIO *stio1; |
1944 | register STIO *stio2; |
1945 | int domain, type, protocol, fd[2]; |
1946 | |
1947 | if (!stab1 || !stab2) |
1948 | return FALSE; |
1949 | |
1950 | stio1 = stab_io(stab1); |
1951 | stio2 = stab_io(stab2); |
1952 | if (!stio1) |
1953 | stio1 = stab_io(stab1) = stio_new(); |
1954 | else if (stio1->ifp) |
1955 | do_close(stab1,FALSE); |
1956 | if (!stio2) |
1957 | stio2 = stab_io(stab2) = stio_new(); |
1958 | else if (stio2->ifp) |
1959 | do_close(stab2,FALSE); |
1960 | |
1961 | domain = (int)str_gnum(st[++sp]); |
1962 | type = (int)str_gnum(st[++sp]); |
1963 | protocol = (int)str_gnum(st[++sp]); |
1964 | #ifdef TAINT |
1965 | taintproper("Insecure dependency in socketpair"); |
1966 | #endif |
fe14fcc3 |
1967 | #ifdef HAS_SOCKETPAIR |
a687059c |
1968 | if (socketpair(domain,type,protocol,fd) < 0) |
1969 | return FALSE; |
1970 | #else |
1971 | fatal("Socketpair unimplemented"); |
1972 | #endif |
1973 | stio1->ifp = fdopen(fd[0], "r"); |
1974 | stio1->ofp = fdopen(fd[0], "w"); |
1975 | stio1->type = 's'; |
1976 | stio2->ifp = fdopen(fd[1], "r"); |
1977 | stio2->ofp = fdopen(fd[1], "w"); |
1978 | stio2->type = 's'; |
fe14fcc3 |
1979 | if (!stio1->ifp || !stio1->ofp || !stio2->ifp || !stio2->ofp) { |
1980 | if (stio1->ifp) fclose(stio1->ifp); |
1981 | if (stio1->ofp) fclose(stio1->ofp); |
1982 | if (!stio1->ifp && !stio1->ofp) close(fd[0]); |
1983 | if (stio2->ifp) fclose(stio2->ifp); |
1984 | if (stio2->ofp) fclose(stio2->ofp); |
1985 | if (!stio2->ifp && !stio2->ofp) close(fd[1]); |
1986 | return FALSE; |
1987 | } |
a687059c |
1988 | |
1989 | return TRUE; |
1990 | } |
1991 | |
fe14fcc3 |
1992 | #endif /* HAS_SOCKET */ |
a687059c |
1993 | |
1994 | int |
1995 | do_gpwent(which,gimme,arglast) |
1996 | int which; |
1997 | int gimme; |
1998 | int *arglast; |
1999 | { |
2000 | #ifdef I_PWD |
2001 | register ARRAY *ary = stack; |
2002 | register int sp = arglast[0]; |
a687059c |
2003 | register STR *str; |
2004 | struct passwd *getpwnam(); |
2005 | struct passwd *getpwuid(); |
2006 | struct passwd *getpwent(); |
2007 | struct passwd *pwent; |
a687059c |
2008 | |
2009 | if (gimme != G_ARRAY) { |
fe14fcc3 |
2010 | astore(ary, ++sp, str_mortal(&str_undef)); |
a687059c |
2011 | return sp; |
2012 | } |
2013 | |
2014 | if (which == O_GPWNAM) { |
2015 | char *name = str_get(ary->ary_array[sp+1]); |
2016 | |
2017 | pwent = getpwnam(name); |
2018 | } |
2019 | else if (which == O_GPWUID) { |
2020 | int uid = (int)str_gnum(ary->ary_array[sp+1]); |
2021 | |
2022 | pwent = getpwuid(uid); |
2023 | } |
2024 | else |
2025 | pwent = getpwent(); |
2026 | |
2027 | if (pwent) { |
fe14fcc3 |
2028 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
2029 | str_set(str, pwent->pw_name); |
fe14fcc3 |
2030 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
2031 | str_set(str, pwent->pw_passwd); |
fe14fcc3 |
2032 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
2033 | str_numset(str, (double)pwent->pw_uid); |
fe14fcc3 |
2034 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
2035 | str_numset(str, (double)pwent->pw_gid); |
fe14fcc3 |
2036 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
03a14243 |
2037 | #ifdef PWCHANGE |
2038 | str_numset(str, (double)pwent->pw_change); |
2039 | #else |
a687059c |
2040 | #ifdef PWQUOTA |
2041 | str_numset(str, (double)pwent->pw_quota); |
2042 | #else |
2043 | #ifdef PWAGE |
2044 | str_set(str, pwent->pw_age); |
2045 | #endif |
2046 | #endif |
03a14243 |
2047 | #endif |
fe14fcc3 |
2048 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
03a14243 |
2049 | #ifdef PWCLASS |
2050 | str_set(str,pwent->pw_class); |
2051 | #else |
c2ab57d4 |
2052 | #ifdef PWCOMMENT |
a687059c |
2053 | str_set(str, pwent->pw_comment); |
03a14243 |
2054 | #endif |
c2ab57d4 |
2055 | #endif |
fe14fcc3 |
2056 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
2057 | str_set(str, pwent->pw_gecos); |
fe14fcc3 |
2058 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
2059 | str_set(str, pwent->pw_dir); |
fe14fcc3 |
2060 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
2061 | str_set(str, pwent->pw_shell); |
03a14243 |
2062 | #ifdef PWEXPIRE |
fe14fcc3 |
2063 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
03a14243 |
2064 | str_numset(str, (double)pwent->pw_expire); |
2065 | #endif |
a687059c |
2066 | } |
2067 | |
2068 | return sp; |
2069 | #else |
2070 | fatal("password routines not implemented"); |
2071 | #endif |
2072 | } |
2073 | |
2074 | int |
2075 | do_ggrent(which,gimme,arglast) |
2076 | int which; |
2077 | int gimme; |
2078 | int *arglast; |
2079 | { |
2080 | #ifdef I_GRP |
2081 | register ARRAY *ary = stack; |
2082 | register int sp = arglast[0]; |
2083 | register char **elem; |
2084 | register STR *str; |
2085 | struct group *getgrnam(); |
2086 | struct group *getgrgid(); |
2087 | struct group *getgrent(); |
2088 | struct group *grent; |
a687059c |
2089 | |
2090 | if (gimme != G_ARRAY) { |
fe14fcc3 |
2091 | astore(ary, ++sp, str_mortal(&str_undef)); |
a687059c |
2092 | return sp; |
2093 | } |
2094 | |
2095 | if (which == O_GGRNAM) { |
2096 | char *name = str_get(ary->ary_array[sp+1]); |
2097 | |
2098 | grent = getgrnam(name); |
2099 | } |
2100 | else if (which == O_GGRGID) { |
2101 | int gid = (int)str_gnum(ary->ary_array[sp+1]); |
2102 | |
2103 | grent = getgrgid(gid); |
2104 | } |
2105 | else |
2106 | grent = getgrent(); |
2107 | |
2108 | if (grent) { |
fe14fcc3 |
2109 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
2110 | str_set(str, grent->gr_name); |
fe14fcc3 |
2111 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
2112 | str_set(str, grent->gr_passwd); |
fe14fcc3 |
2113 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
2114 | str_numset(str, (double)grent->gr_gid); |
fe14fcc3 |
2115 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
2116 | for (elem = grent->gr_mem; *elem; elem++) { |
2117 | str_cat(str, *elem); |
2118 | if (elem[1]) |
2119 | str_ncat(str," ",1); |
2120 | } |
2121 | } |
2122 | |
2123 | return sp; |
2124 | #else |
2125 | fatal("group routines not implemented"); |
2126 | #endif |
2127 | } |
2128 | |
2129 | int |
2130 | do_dirop(optype,stab,gimme,arglast) |
2131 | int optype; |
2132 | STAB *stab; |
2133 | int gimme; |
2134 | int *arglast; |
2135 | { |
fe14fcc3 |
2136 | #if defined(DIRENT) && defined(HAS_READDIR) |
a687059c |
2137 | register ARRAY *ary = stack; |
2138 | register STR **st = ary->ary_array; |
2139 | register int sp = arglast[1]; |
2140 | register STIO *stio; |
2141 | long along; |
bf38876a |
2142 | #ifndef telldir |
a687059c |
2143 | long telldir(); |
bf38876a |
2144 | #endif |
a687059c |
2145 | struct DIRENT *readdir(); |
2146 | register struct DIRENT *dp; |
2147 | |
2148 | if (!stab) |
2149 | goto nope; |
2150 | if (!(stio = stab_io(stab))) |
2151 | stio = stab_io(stab) = stio_new(); |
2152 | if (!stio->dirp && optype != O_OPENDIR) |
2153 | goto nope; |
2154 | st[sp] = &str_yes; |
2155 | switch (optype) { |
2156 | case O_OPENDIR: |
2157 | if (stio->dirp) |
2158 | closedir(stio->dirp); |
2159 | if (!(stio->dirp = opendir(str_get(st[sp+1])))) |
2160 | goto nope; |
2161 | break; |
2162 | case O_READDIR: |
2163 | if (gimme == G_ARRAY) { |
2164 | --sp; |
2165 | while (dp = readdir(stio->dirp)) { |
2166 | #ifdef DIRNAMLEN |
2167 | (void)astore(ary,++sp, |
fe14fcc3 |
2168 | str_2mortal(str_make(dp->d_name,dp->d_namlen))); |
a687059c |
2169 | #else |
2170 | (void)astore(ary,++sp, |
fe14fcc3 |
2171 | str_2mortal(str_make(dp->d_name,0))); |
a687059c |
2172 | #endif |
2173 | } |
2174 | } |
2175 | else { |
2176 | if (!(dp = readdir(stio->dirp))) |
2177 | goto nope; |
fe14fcc3 |
2178 | st[sp] = str_mortal(&str_undef); |
a687059c |
2179 | #ifdef DIRNAMLEN |
2180 | str_nset(st[sp], dp->d_name, dp->d_namlen); |
2181 | #else |
2182 | str_set(st[sp], dp->d_name); |
2183 | #endif |
2184 | } |
2185 | break; |
ff8e2863 |
2186 | #if MACH |
2187 | case O_TELLDIR: |
2188 | case O_SEEKDIR: |
2189 | goto nope; |
2190 | #else |
a687059c |
2191 | case O_TELLDIR: |
fe14fcc3 |
2192 | st[sp] = str_mortal(&str_undef); |
a687059c |
2193 | str_numset(st[sp], (double)telldir(stio->dirp)); |
2194 | break; |
2195 | case O_SEEKDIR: |
fe14fcc3 |
2196 | st[sp] = str_mortal(&str_undef); |
a687059c |
2197 | along = (long)str_gnum(st[sp+1]); |
2198 | (void)seekdir(stio->dirp,along); |
2199 | break; |
ff8e2863 |
2200 | #endif |
a687059c |
2201 | case O_REWINDDIR: |
fe14fcc3 |
2202 | st[sp] = str_mortal(&str_undef); |
a687059c |
2203 | (void)rewinddir(stio->dirp); |
2204 | break; |
2205 | case O_CLOSEDIR: |
fe14fcc3 |
2206 | st[sp] = str_mortal(&str_undef); |
a687059c |
2207 | (void)closedir(stio->dirp); |
2208 | stio->dirp = 0; |
2209 | break; |
2210 | } |
2211 | return sp; |
2212 | |
2213 | nope: |
2214 | st[sp] = &str_undef; |
2215 | return sp; |
2216 | |
2217 | #else |
2218 | fatal("Unimplemented directory operation"); |
2219 | #endif |
2220 | } |
2221 | |
2222 | apply(type,arglast) |
2223 | int type; |
2224 | int *arglast; |
2225 | { |
2226 | register STR **st = stack->ary_array; |
2227 | register int sp = arglast[1]; |
2228 | register int items = arglast[2] - sp; |
2229 | register int val; |
2230 | register int val2; |
2231 | register int tot = 0; |
2232 | char *s; |
2233 | |
2234 | #ifdef TAINT |
2235 | for (st += ++sp; items--; st++) |
2236 | tainted |= (*st)->str_tainted; |
2237 | st = stack->ary_array; |
2238 | sp = arglast[1]; |
2239 | items = arglast[2] - sp; |
2240 | #endif |
2241 | switch (type) { |
2242 | case O_CHMOD: |
2243 | #ifdef TAINT |
2244 | taintproper("Insecure dependency in chmod"); |
2245 | #endif |
2246 | if (--items > 0) { |
2247 | tot = items; |
2248 | val = (int)str_gnum(st[++sp]); |
2249 | while (items--) { |
2250 | if (chmod(str_get(st[++sp]),val)) |
2251 | tot--; |
2252 | } |
2253 | } |
2254 | break; |
fe14fcc3 |
2255 | #ifdef HAS_CHOWN |
a687059c |
2256 | case O_CHOWN: |
2257 | #ifdef TAINT |
2258 | taintproper("Insecure dependency in chown"); |
2259 | #endif |
2260 | if (items > 2) { |
2261 | items -= 2; |
2262 | tot = items; |
2263 | val = (int)str_gnum(st[++sp]); |
2264 | val2 = (int)str_gnum(st[++sp]); |
2265 | while (items--) { |
2266 | if (chown(str_get(st[++sp]),val,val2)) |
2267 | tot--; |
2268 | } |
2269 | } |
2270 | break; |
b1248f16 |
2271 | #endif |
fe14fcc3 |
2272 | #ifdef HAS_KILL |
a687059c |
2273 | case O_KILL: |
2274 | #ifdef TAINT |
2275 | taintproper("Insecure dependency in kill"); |
2276 | #endif |
2277 | if (--items > 0) { |
2278 | tot = items; |
2279 | s = str_get(st[++sp]); |
2280 | if (isupper(*s)) { |
2281 | if (*s == 'S' && s[1] == 'I' && s[2] == 'G') |
2282 | s += 3; |
2283 | if (!(val = whichsig(s))) |
2284 | fatal("Unrecognized signal name \"%s\"",s); |
2285 | } |
2286 | else |
2287 | val = (int)str_gnum(st[sp]); |
2288 | if (val < 0) { |
2289 | val = -val; |
2290 | while (items--) { |
2291 | int proc = (int)str_gnum(st[++sp]); |
fe14fcc3 |
2292 | #ifdef HAS_KILLPG |
a687059c |
2293 | if (killpg(proc,val)) /* BSD */ |
2294 | #else |
2295 | if (kill(-proc,val)) /* SYSV */ |
2296 | #endif |
2297 | tot--; |
2298 | } |
2299 | } |
2300 | else { |
2301 | while (items--) { |
2302 | if (kill((int)(str_gnum(st[++sp])),val)) |
2303 | tot--; |
2304 | } |
2305 | } |
2306 | } |
2307 | break; |
b1248f16 |
2308 | #endif |
a687059c |
2309 | case O_UNLINK: |
2310 | #ifdef TAINT |
2311 | taintproper("Insecure dependency in unlink"); |
2312 | #endif |
2313 | tot = items; |
2314 | while (items--) { |
2315 | s = str_get(st[++sp]); |
2316 | if (euid || unsafe) { |
2317 | if (UNLINK(s)) |
2318 | tot--; |
2319 | } |
2320 | else { /* don't let root wipe out directories without -U */ |
fe14fcc3 |
2321 | #ifdef HAS_LSTAT |
c623bd54 |
2322 | if (lstat(s,&statbuf) < 0 || S_ISDIR(statbuf.st_mode)) |
a687059c |
2323 | #else |
c623bd54 |
2324 | if (stat(s,&statbuf) < 0 || S_ISDIR(statbuf.st_mode)) |
a687059c |
2325 | #endif |
a687059c |
2326 | tot--; |
2327 | else { |
2328 | if (UNLINK(s)) |
2329 | tot--; |
2330 | } |
2331 | } |
2332 | } |
2333 | break; |
2334 | case O_UTIME: |
2335 | #ifdef TAINT |
2336 | taintproper("Insecure dependency in utime"); |
2337 | #endif |
2338 | if (items > 2) { |
663a0e37 |
2339 | #ifdef I_UTIME |
2340 | struct utimbuf utbuf; |
2341 | #else |
a687059c |
2342 | struct { |
663a0e37 |
2343 | long actime; |
2344 | long modtime; |
a687059c |
2345 | } utbuf; |
663a0e37 |
2346 | #endif |
a687059c |
2347 | |
afd9f252 |
2348 | Zero(&utbuf, sizeof utbuf, char); |
663a0e37 |
2349 | utbuf.actime = (long)str_gnum(st[++sp]); /* time accessed */ |
2350 | utbuf.modtime = (long)str_gnum(st[++sp]); /* time modified */ |
a687059c |
2351 | items -= 2; |
2352 | #ifndef lint |
2353 | tot = items; |
2354 | while (items--) { |
2355 | if (utime(str_get(st[++sp]),&utbuf)) |
2356 | tot--; |
2357 | } |
2358 | #endif |
2359 | } |
2360 | else |
2361 | items = 0; |
2362 | break; |
2363 | } |
2364 | return tot; |
2365 | } |
2366 | |
2367 | /* Do the permissions allow some operation? Assumes statcache already set. */ |
2368 | |
2369 | int |
2370 | cando(bit, effective, statbufp) |
2371 | int bit; |
2372 | int effective; |
2373 | register struct stat *statbufp; |
2374 | { |
fe14fcc3 |
2375 | #ifdef MSDOS |
2376 | /* [Comments and code from Len Reed] |
2377 | * MS-DOS "user" is similar to UNIX's "superuser," but can't write |
2378 | * to write-protected files. The execute permission bit is set |
2379 | * by the Miscrosoft C library stat() function for the following: |
2380 | * .exe files |
2381 | * .com files |
2382 | * .bat files |
2383 | * directories |
2384 | * All files and directories are readable. |
2385 | * Directories and special files, e.g. "CON", cannot be |
2386 | * write-protected. |
2387 | * [Comment by Tom Dinger -- a directory can have the write-protect |
2388 | * bit set in the file system, but DOS permits changes to |
2389 | * the directory anyway. In addition, all bets are off |
2390 | * here for networked software, such as Novell and |
2391 | * Sun's PC-NFS.] |
2392 | */ |
2393 | |
2394 | return (bit & statbufp->st_mode) ? TRUE : FALSE; |
2395 | |
2396 | #else /* ! MSDOS */ |
a687059c |
2397 | if ((effective ? euid : uid) == 0) { /* root is special */ |
c623bd54 |
2398 | if (bit == S_IXUSR) { |
2399 | if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode)) |
a687059c |
2400 | return TRUE; |
2401 | } |
2402 | else |
2403 | return TRUE; /* root reads and writes anything */ |
2404 | return FALSE; |
2405 | } |
2406 | if (statbufp->st_uid == (effective ? euid : uid) ) { |
2407 | if (statbufp->st_mode & bit) |
2408 | return TRUE; /* ok as "user" */ |
2409 | } |
2410 | else if (ingroup((int)statbufp->st_gid,effective)) { |
2411 | if (statbufp->st_mode & bit >> 3) |
2412 | return TRUE; /* ok as "group" */ |
2413 | } |
2414 | else if (statbufp->st_mode & bit >> 6) |
2415 | return TRUE; /* ok as "other" */ |
2416 | return FALSE; |
fe14fcc3 |
2417 | #endif /* ! MSDOS */ |
a687059c |
2418 | } |
2419 | |
2420 | int |
2421 | ingroup(testgid,effective) |
2422 | int testgid; |
2423 | int effective; |
2424 | { |
2425 | if (testgid == (effective ? egid : gid)) |
2426 | return TRUE; |
fe14fcc3 |
2427 | #ifdef HAS_GETGROUPS |
a687059c |
2428 | #ifndef NGROUPS |
2429 | #define NGROUPS 32 |
2430 | #endif |
2431 | { |
1c3d792e |
2432 | GROUPSTYPE gary[NGROUPS]; |
a687059c |
2433 | int anum; |
2434 | |
2435 | anum = getgroups(NGROUPS,gary); |
2436 | while (--anum >= 0) |
2437 | if (gary[anum] == testgid) |
2438 | return TRUE; |
2439 | } |
2440 | #endif |
2441 | return FALSE; |
2442 | } |
c2ab57d4 |
2443 | |
fe14fcc3 |
2444 | #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM) |
c2ab57d4 |
2445 | |
2446 | int |
2447 | do_ipcget(optype, arglast) |
2448 | int optype; |
2449 | int *arglast; |
2450 | { |
2451 | register STR **st = stack->ary_array; |
2452 | register int sp = arglast[0]; |
2453 | key_t key; |
2454 | int n, flags; |
2455 | |
2456 | key = (key_t)str_gnum(st[++sp]); |
2457 | n = (optype == O_MSGGET) ? 0 : (int)str_gnum(st[++sp]); |
2458 | flags = (int)str_gnum(st[++sp]); |
2459 | errno = 0; |
2460 | switch (optype) |
2461 | { |
fe14fcc3 |
2462 | #ifdef HAS_MSG |
c2ab57d4 |
2463 | case O_MSGGET: |
2464 | return msgget(key, flags); |
e5d73d77 |
2465 | #endif |
fe14fcc3 |
2466 | #ifdef HAS_SEM |
c2ab57d4 |
2467 | case O_SEMGET: |
2468 | return semget(key, n, flags); |
e5d73d77 |
2469 | #endif |
fe14fcc3 |
2470 | #ifdef HAS_SHM |
c2ab57d4 |
2471 | case O_SHMGET: |
2472 | return shmget(key, n, flags); |
e5d73d77 |
2473 | #endif |
fe14fcc3 |
2474 | #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM) |
e5d73d77 |
2475 | default: |
2476 | fatal("%s not implemented", opname[optype]); |
2477 | #endif |
c2ab57d4 |
2478 | } |
2479 | return -1; /* should never happen */ |
2480 | } |
2481 | |
2482 | int |
2483 | do_ipcctl(optype, arglast) |
2484 | int optype; |
2485 | int *arglast; |
2486 | { |
2487 | register STR **st = stack->ary_array; |
2488 | register int sp = arglast[0]; |
2489 | STR *astr; |
2490 | char *a; |
2491 | int id, n, cmd, infosize, getinfo, ret; |
2492 | |
2493 | id = (int)str_gnum(st[++sp]); |
2494 | n = (optype == O_SEMCTL) ? (int)str_gnum(st[++sp]) : 0; |
2495 | cmd = (int)str_gnum(st[++sp]); |
2496 | astr = st[++sp]; |
2497 | |
2498 | infosize = 0; |
2499 | getinfo = (cmd == IPC_STAT); |
2500 | |
2501 | switch (optype) |
2502 | { |
fe14fcc3 |
2503 | #ifdef HAS_MSG |
c2ab57d4 |
2504 | case O_MSGCTL: |
2505 | if (cmd == IPC_STAT || cmd == IPC_SET) |
2506 | infosize = sizeof(struct msqid_ds); |
2507 | break; |
e5d73d77 |
2508 | #endif |
fe14fcc3 |
2509 | #ifdef HAS_SHM |
c2ab57d4 |
2510 | case O_SHMCTL: |
2511 | if (cmd == IPC_STAT || cmd == IPC_SET) |
2512 | infosize = sizeof(struct shmid_ds); |
2513 | break; |
e5d73d77 |
2514 | #endif |
fe14fcc3 |
2515 | #ifdef HAS_SEM |
c2ab57d4 |
2516 | case O_SEMCTL: |
2517 | if (cmd == IPC_STAT || cmd == IPC_SET) |
2518 | infosize = sizeof(struct semid_ds); |
2519 | else if (cmd == GETALL || cmd == SETALL) |
2520 | { |
2521 | struct semid_ds semds; |
2522 | if (semctl(id, 0, IPC_STAT, &semds) == -1) |
2523 | return -1; |
2524 | getinfo = (cmd == GETALL); |
fe14fcc3 |
2525 | #ifdef _POSIX_SOURCE |
2526 | infosize = semds.sem_nsems * sizeof(ushort_t); |
2527 | #else |
c2ab57d4 |
2528 | infosize = semds.sem_nsems * sizeof(ushort); |
fe14fcc3 |
2529 | #endif |
c2ab57d4 |
2530 | } |
2531 | break; |
e5d73d77 |
2532 | #endif |
fe14fcc3 |
2533 | #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM) |
e5d73d77 |
2534 | default: |
2535 | fatal("%s not implemented", opname[optype]); |
2536 | #endif |
c2ab57d4 |
2537 | } |
2538 | |
2539 | if (infosize) |
2540 | { |
2541 | if (getinfo) |
2542 | { |
2543 | STR_GROW(astr, infosize+1); |
2544 | a = str_get(astr); |
2545 | } |
2546 | else |
2547 | { |
2548 | a = str_get(astr); |
2549 | if (astr->str_cur != infosize) |
2550 | { |
2551 | errno = EINVAL; |
2552 | return -1; |
2553 | } |
2554 | } |
2555 | } |
2556 | else |
2557 | { |
2558 | int i = (int)str_gnum(astr); |
2559 | a = (char *)i; /* ouch */ |
2560 | } |
2561 | errno = 0; |
2562 | switch (optype) |
2563 | { |
fe14fcc3 |
2564 | #ifdef HAS_MSG |
c2ab57d4 |
2565 | case O_MSGCTL: |
2566 | ret = msgctl(id, cmd, a); |
2567 | break; |
e5d73d77 |
2568 | #endif |
fe14fcc3 |
2569 | #ifdef HAS_SEM |
c2ab57d4 |
2570 | case O_SEMCTL: |
2571 | ret = semctl(id, n, cmd, a); |
2572 | break; |
e5d73d77 |
2573 | #endif |
fe14fcc3 |
2574 | #ifdef HAS_SHM |
c2ab57d4 |
2575 | case O_SHMCTL: |
2576 | ret = shmctl(id, cmd, a); |
2577 | break; |
e5d73d77 |
2578 | #endif |
c2ab57d4 |
2579 | } |
2580 | if (getinfo && ret >= 0) { |
2581 | astr->str_cur = infosize; |
2582 | astr->str_ptr[infosize] = '\0'; |
2583 | } |
2584 | return ret; |
2585 | } |
2586 | |
2587 | int |
2588 | do_msgsnd(arglast) |
2589 | int *arglast; |
2590 | { |
fe14fcc3 |
2591 | #ifdef HAS_MSG |
c2ab57d4 |
2592 | register STR **st = stack->ary_array; |
2593 | register int sp = arglast[0]; |
2594 | STR *mstr; |
2595 | char *mbuf; |
2596 | int id, msize, flags; |
2597 | |
2598 | id = (int)str_gnum(st[++sp]); |
2599 | mstr = st[++sp]; |
2600 | flags = (int)str_gnum(st[++sp]); |
2601 | mbuf = str_get(mstr); |
2602 | if ((msize = mstr->str_cur - sizeof(long)) < 0) { |
2603 | errno = EINVAL; |
2604 | return -1; |
2605 | } |
2606 | errno = 0; |
2607 | return msgsnd(id, mbuf, msize, flags); |
e5d73d77 |
2608 | #else |
2609 | fatal("msgsnd not implemented"); |
2610 | #endif |
c2ab57d4 |
2611 | } |
2612 | |
2613 | int |
2614 | do_msgrcv(arglast) |
2615 | int *arglast; |
2616 | { |
fe14fcc3 |
2617 | #ifdef HAS_MSG |
c2ab57d4 |
2618 | register STR **st = stack->ary_array; |
2619 | register int sp = arglast[0]; |
2620 | STR *mstr; |
2621 | char *mbuf; |
2622 | long mtype; |
2623 | int id, msize, flags, ret; |
2624 | |
2625 | id = (int)str_gnum(st[++sp]); |
2626 | mstr = st[++sp]; |
2627 | msize = (int)str_gnum(st[++sp]); |
2628 | mtype = (long)str_gnum(st[++sp]); |
2629 | flags = (int)str_gnum(st[++sp]); |
2630 | mbuf = str_get(mstr); |
2631 | if (mstr->str_cur < sizeof(long)+msize+1) { |
2632 | STR_GROW(mstr, sizeof(long)+msize+1); |
2633 | mbuf = str_get(mstr); |
2634 | } |
2635 | errno = 0; |
2636 | ret = msgrcv(id, mbuf, msize, mtype, flags); |
2637 | if (ret >= 0) { |
2638 | mstr->str_cur = sizeof(long)+ret; |
2639 | mstr->str_ptr[sizeof(long)+ret] = '\0'; |
2640 | } |
2641 | return ret; |
e5d73d77 |
2642 | #else |
2643 | fatal("msgrcv not implemented"); |
2644 | #endif |
c2ab57d4 |
2645 | } |
2646 | |
2647 | int |
2648 | do_semop(arglast) |
2649 | int *arglast; |
2650 | { |
fe14fcc3 |
2651 | #ifdef HAS_SEM |
c2ab57d4 |
2652 | register STR **st = stack->ary_array; |
2653 | register int sp = arglast[0]; |
2654 | STR *opstr; |
2655 | char *opbuf; |
2656 | int id, opsize; |
2657 | |
2658 | id = (int)str_gnum(st[++sp]); |
2659 | opstr = st[++sp]; |
2660 | opbuf = str_get(opstr); |
2661 | opsize = opstr->str_cur; |
2662 | if (opsize < sizeof(struct sembuf) |
2663 | || (opsize % sizeof(struct sembuf)) != 0) { |
2664 | errno = EINVAL; |
2665 | return -1; |
2666 | } |
2667 | errno = 0; |
2668 | return semop(id, opbuf, opsize/sizeof(struct sembuf)); |
e5d73d77 |
2669 | #else |
2670 | fatal("semop not implemented"); |
2671 | #endif |
c2ab57d4 |
2672 | } |
2673 | |
2674 | int |
2675 | do_shmio(optype, arglast) |
2676 | int optype; |
2677 | int *arglast; |
2678 | { |
fe14fcc3 |
2679 | #ifdef HAS_SHM |
c2ab57d4 |
2680 | register STR **st = stack->ary_array; |
2681 | register int sp = arglast[0]; |
2682 | STR *mstr; |
2683 | char *mbuf, *shm; |
2684 | int id, mpos, msize; |
2685 | struct shmid_ds shmds; |
2686 | extern char *shmat(); |
2687 | |
2688 | id = (int)str_gnum(st[++sp]); |
2689 | mstr = st[++sp]; |
2690 | mpos = (int)str_gnum(st[++sp]); |
2691 | msize = (int)str_gnum(st[++sp]); |
2692 | errno = 0; |
2693 | if (shmctl(id, IPC_STAT, &shmds) == -1) |
2694 | return -1; |
2695 | if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) { |
2696 | errno = EFAULT; /* can't do as caller requested */ |
2697 | return -1; |
2698 | } |
2699 | shm = shmat(id, (char *)NULL, (optype == O_SHMREAD) ? SHM_RDONLY : 0); |
2700 | if (shm == (char *)-1) /* I hate System V IPC, I really do */ |
2701 | return -1; |
2702 | mbuf = str_get(mstr); |
2703 | if (optype == O_SHMREAD) { |
2704 | if (mstr->str_cur < msize) { |
2705 | STR_GROW(mstr, msize+1); |
2706 | mbuf = str_get(mstr); |
2707 | } |
2708 | bcopy(shm + mpos, mbuf, msize); |
2709 | mstr->str_cur = msize; |
2710 | mstr->str_ptr[msize] = '\0'; |
2711 | } |
2712 | else { |
2713 | int n; |
2714 | |
2715 | if ((n = mstr->str_cur) > msize) |
2716 | n = msize; |
2717 | bcopy(mbuf, shm + mpos, n); |
2718 | if (n < msize) |
2719 | bzero(shm + mpos + n, msize - n); |
2720 | } |
2721 | return shmdt(shm); |
e5d73d77 |
2722 | #else |
2723 | fatal("shm I/O not implemented"); |
2724 | #endif |
c2ab57d4 |
2725 | } |
2726 | |
fe14fcc3 |
2727 | #endif /* SYSV IPC */ |