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99b89507 |
1 | /* $RCSfile: doio.c,v $$Revision: 4.0.1.4 $$Date: 91/11/05 16:51:43 $ |
a687059c |
2 | * |
6e21c824 |
3 | * Copyright (c) 1991, Larry Wall |
a687059c |
4 | * |
6e21c824 |
5 | * You may distribute under the terms of either the GNU General Public |
6 | * License or the Artistic License, as specified in the README file. |
a687059c |
7 | * |
8 | * $Log: doio.c,v $ |
99b89507 |
9 | * Revision 4.0.1.4 91/11/05 16:51:43 lwall |
10 | * patch11: prepared for ctype implementations that don't define isascii() |
11 | * patch11: perl mistook some streams for sockets because they return mode 0 too |
12 | * patch11: reopening STDIN, STDOUT and STDERR failed on some machines |
13 | * patch11: certain perl errors should set EBADF so that $! looks better |
14 | * patch11: truncate on a closed filehandle could dump |
15 | * patch11: stats of _ forgot whether prior stat was actually lstat |
16 | * patch11: -T returned true on NFS directory |
17 | * |
1462b684 |
18 | * Revision 4.0.1.3 91/06/10 01:21:19 lwall |
19 | * patch10: read didn't work from character special files open for writing |
20 | * patch10: close-on-exec wrongly set on system file descriptors |
21 | * |
6e21c824 |
22 | * Revision 4.0.1.2 91/06/07 10:53:39 lwall |
23 | * patch4: new copyright notice |
24 | * patch4: system fd's are now treated specially |
25 | * patch4: added $^F variable to specify maximum system fd, default 2 |
26 | * patch4: character special files now opened with bidirectional stdio buffers |
27 | * patch4: taintchecks could improperly modify parent in vfork() |
28 | * patch4: many, many itty-bitty portability fixes |
29 | * |
1c3d792e |
30 | * Revision 4.0.1.1 91/04/11 17:41:06 lwall |
31 | * patch1: hopefully straightened out some of the Xenix mess |
32 | * |
fe14fcc3 |
33 | * Revision 4.0 91/03/20 01:07:06 lwall |
34 | * 4.0 baseline. |
a687059c |
35 | * |
36 | */ |
37 | |
38 | #include "EXTERN.h" |
39 | #include "perl.h" |
40 | |
fe14fcc3 |
41 | #ifdef HAS_SOCKET |
a687059c |
42 | #include <sys/socket.h> |
43 | #include <netdb.h> |
44 | #endif |
45 | |
fe14fcc3 |
46 | #ifdef HAS_SELECT |
1c3d792e |
47 | #ifdef I_SYS_SELECT |
48 | #ifndef I_SYS_TIME |
fe14fcc3 |
49 | #include <sys/select.h> |
50 | #endif |
51 | #endif |
1c3d792e |
52 | #endif |
fe14fcc3 |
53 | |
54 | #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM) |
c2ab57d4 |
55 | #include <sys/ipc.h> |
fe14fcc3 |
56 | #ifdef HAS_MSG |
c2ab57d4 |
57 | #include <sys/msg.h> |
e5d73d77 |
58 | #endif |
fe14fcc3 |
59 | #ifdef HAS_SEM |
c2ab57d4 |
60 | #include <sys/sem.h> |
e5d73d77 |
61 | #endif |
fe14fcc3 |
62 | #ifdef HAS_SHM |
c2ab57d4 |
63 | #include <sys/shm.h> |
64 | #endif |
e5d73d77 |
65 | #endif |
c2ab57d4 |
66 | |
a687059c |
67 | #ifdef I_PWD |
68 | #include <pwd.h> |
69 | #endif |
70 | #ifdef I_GRP |
71 | #include <grp.h> |
72 | #endif |
663a0e37 |
73 | #ifdef I_UTIME |
74 | #include <utime.h> |
75 | #endif |
ff8e2863 |
76 | #ifdef I_FCNTL |
77 | #include <fcntl.h> |
78 | #endif |
fe14fcc3 |
79 | #ifdef I_SYS_FILE |
80 | #include <sys/file.h> |
81 | #endif |
a687059c |
82 | |
57ebbfd0 |
83 | int laststatval = -1; |
fe14fcc3 |
84 | int laststype = O_STAT; |
57ebbfd0 |
85 | |
a687059c |
86 | bool |
afd9f252 |
87 | do_open(stab,name,len) |
a687059c |
88 | STAB *stab; |
89 | register char *name; |
afd9f252 |
90 | int len; |
a687059c |
91 | { |
92 | FILE *fp; |
a687059c |
93 | register STIO *stio = stab_io(stab); |
94 | char *myname = savestr(name); |
95 | int result; |
96 | int fd; |
97 | int writing = 0; |
98 | char mode[3]; /* stdio file mode ("r\0" or "r+\0") */ |
6e21c824 |
99 | FILE *saveifp = Nullfp; |
100 | FILE *saveofp = Nullfp; |
101 | char savetype = ' '; |
a687059c |
102 | |
103 | name = myname; |
104 | forkprocess = 1; /* assume true if no fork */ |
99b89507 |
105 | while (len && isSPACE(name[len-1])) |
a687059c |
106 | name[--len] = '\0'; |
107 | if (!stio) |
108 | stio = stab_io(stab) = stio_new(); |
109 | else if (stio->ifp) { |
110 | fd = fileno(stio->ifp); |
6e21c824 |
111 | if (stio->type == '-') |
c2ab57d4 |
112 | result = 0; |
6e21c824 |
113 | else if (fd <= maxsysfd) { |
114 | saveifp = stio->ifp; |
115 | saveofp = stio->ofp; |
116 | savetype = stio->type; |
117 | result = 0; |
118 | } |
119 | else if (stio->type == '|') |
120 | result = mypclose(stio->ifp); |
a687059c |
121 | else if (stio->ifp != stio->ofp) { |
c2ab57d4 |
122 | if (stio->ofp) { |
123 | result = fclose(stio->ofp); |
124 | fclose(stio->ifp); /* clear stdio, fd already closed */ |
125 | } |
126 | else |
127 | result = fclose(stio->ifp); |
a687059c |
128 | } |
a687059c |
129 | else |
c2ab57d4 |
130 | result = fclose(stio->ifp); |
6e21c824 |
131 | if (result == EOF && fd > maxsysfd) |
a687059c |
132 | fprintf(stderr,"Warning: unable to close filehandle %s properly.\n", |
133 | stab_name(stab)); |
134 | stio->ofp = stio->ifp = Nullfp; |
135 | } |
136 | if (*name == '+' && len > 1 && name[len-1] != '|') { /* scary */ |
137 | mode[1] = *name++; |
138 | mode[2] = '\0'; |
139 | --len; |
140 | writing = 1; |
141 | } |
142 | else { |
143 | mode[1] = '\0'; |
144 | } |
145 | stio->type = *name; |
146 | if (*name == '|') { |
99b89507 |
147 | /*SUPPRESS 530*/ |
148 | for (name++; isSPACE(*name); name++) ; |
a687059c |
149 | #ifdef TAINT |
150 | taintenv(); |
151 | taintproper("Insecure dependency in piped open"); |
152 | #endif |
153 | fp = mypopen(name,"w"); |
154 | writing = 1; |
155 | } |
a687059c |
156 | else if (*name == '>') { |
157 | #ifdef TAINT |
158 | taintproper("Insecure dependency in open"); |
159 | #endif |
bf38876a |
160 | name++; |
161 | if (*name == '>') { |
162 | mode[0] = stio->type = 'a'; |
163 | name++; |
a687059c |
164 | } |
bf38876a |
165 | else |
a687059c |
166 | mode[0] = 'w'; |
a687059c |
167 | writing = 1; |
bf38876a |
168 | if (*name == '&') { |
169 | duplicity: |
170 | name++; |
99b89507 |
171 | while (isSPACE(*name)) |
bf38876a |
172 | name++; |
99b89507 |
173 | if (isDIGIT(*name)) |
bf38876a |
174 | fd = atoi(name); |
175 | else { |
176 | stab = stabent(name,FALSE); |
6e21c824 |
177 | if (!stab || !stab_io(stab)) { |
178 | #ifdef EINVAL |
179 | errno = EINVAL; |
180 | #endif |
181 | goto say_false; |
182 | } |
bf38876a |
183 | if (stab_io(stab) && stab_io(stab)->ifp) { |
184 | fd = fileno(stab_io(stab)->ifp); |
185 | if (stab_io(stab)->type == 's') |
186 | stio->type = 's'; |
187 | } |
188 | else |
189 | fd = -1; |
190 | } |
fe14fcc3 |
191 | if (!(fp = fdopen(fd = dup(fd),mode))) { |
192 | close(fd); |
193 | } |
bf38876a |
194 | } |
195 | else { |
99b89507 |
196 | while (isSPACE(*name)) |
bf38876a |
197 | name++; |
198 | if (strEQ(name,"-")) { |
199 | fp = stdout; |
200 | stio->type = '-'; |
201 | } |
202 | else { |
203 | fp = fopen(name,mode); |
204 | } |
205 | } |
a687059c |
206 | } |
207 | else { |
208 | if (*name == '<') { |
bf38876a |
209 | mode[0] = 'r'; |
210 | name++; |
99b89507 |
211 | while (isSPACE(*name)) |
bf38876a |
212 | name++; |
213 | if (*name == '&') |
214 | goto duplicity; |
a687059c |
215 | if (strEQ(name,"-")) { |
216 | fp = stdin; |
217 | stio->type = '-'; |
218 | } |
bf38876a |
219 | else |
a687059c |
220 | fp = fopen(name,mode); |
a687059c |
221 | } |
222 | else if (name[len-1] == '|') { |
223 | #ifdef TAINT |
224 | taintenv(); |
225 | taintproper("Insecure dependency in piped open"); |
226 | #endif |
227 | name[--len] = '\0'; |
99b89507 |
228 | while (len && isSPACE(name[len-1])) |
a687059c |
229 | name[--len] = '\0'; |
99b89507 |
230 | /*SUPPRESS 530*/ |
231 | for (; isSPACE(*name); name++) ; |
a687059c |
232 | fp = mypopen(name,"r"); |
233 | stio->type = '|'; |
234 | } |
235 | else { |
236 | stio->type = '<'; |
99b89507 |
237 | /*SUPPRESS 530*/ |
238 | for (; isSPACE(*name); name++) ; |
a687059c |
239 | if (strEQ(name,"-")) { |
240 | fp = stdin; |
241 | stio->type = '-'; |
242 | } |
243 | else |
244 | fp = fopen(name,"r"); |
245 | } |
246 | } |
247 | Safefree(myname); |
248 | if (!fp) |
6e21c824 |
249 | goto say_false; |
a687059c |
250 | if (stio->type && |
251 | stio->type != '|' && stio->type != '-') { |
252 | if (fstat(fileno(fp),&statbuf) < 0) { |
253 | (void)fclose(fp); |
6e21c824 |
254 | goto say_false; |
a687059c |
255 | } |
1462b684 |
256 | if (S_ISSOCK(statbuf.st_mode)) |
bf38876a |
257 | stio->type = 's'; /* in case a socket was passed in to us */ |
99b89507 |
258 | #ifdef HAS_SOCKET |
259 | else if ( |
c623bd54 |
260 | #ifdef S_IFMT |
99b89507 |
261 | !(statbuf.st_mode & S_IFMT) |
262 | #else |
263 | !statbuf.st_mode |
264 | #endif |
265 | ) { |
266 | if (getsockname(fileno(fp), tokenbuf, 0) >= 0 || errno != ENOTSOCK) |
267 | stio->type = 's'; /* some OS's return 0 on fstat()ed socket */ |
268 | /* but some return 0 for streams too, sigh */ |
269 | } |
bf38876a |
270 | #endif |
a687059c |
271 | } |
6e21c824 |
272 | if (saveifp) { /* must use old fp? */ |
273 | fd = fileno(saveifp); |
274 | if (saveofp) { |
275 | fflush(saveofp); /* emulate fclose() */ |
276 | if (saveofp != saveifp) { /* was a socket? */ |
277 | fclose(saveofp); |
99b89507 |
278 | if (fd > 2) |
279 | Safefree(saveofp); |
6e21c824 |
280 | } |
281 | } |
282 | if (fd != fileno(fp)) { |
283 | dup2(fileno(fp), fd); |
284 | fclose(fp); |
285 | } |
286 | fp = saveifp; |
287 | } |
1462b684 |
288 | #if defined(HAS_FCNTL) && defined(F_SETFD) |
289 | fd = fileno(fp); |
290 | fcntl(fd,F_SETFD,fd > maxsysfd); |
291 | #endif |
a687059c |
292 | stio->ifp = fp; |
bf38876a |
293 | if (writing) { |
1462b684 |
294 | if (stio->type == 's' |
295 | || (stio->type == '>' && S_ISCHR(statbuf.st_mode)) ) { |
fe14fcc3 |
296 | if (!(stio->ofp = fdopen(fileno(fp),"w"))) { |
297 | fclose(fp); |
298 | stio->ifp = Nullfp; |
6e21c824 |
299 | goto say_false; |
fe14fcc3 |
300 | } |
1462b684 |
301 | } |
302 | else |
303 | stio->ofp = fp; |
bf38876a |
304 | } |
a687059c |
305 | return TRUE; |
6e21c824 |
306 | |
307 | say_false: |
308 | stio->ifp = saveifp; |
309 | stio->ofp = saveofp; |
310 | stio->type = savetype; |
311 | return FALSE; |
a687059c |
312 | } |
313 | |
314 | FILE * |
315 | nextargv(stab) |
316 | register STAB *stab; |
317 | { |
318 | register STR *str; |
99b89507 |
319 | #ifndef FLEXFILENAMES |
c623bd54 |
320 | int filedev; |
321 | int fileino; |
99b89507 |
322 | #endif |
c623bd54 |
323 | int fileuid; |
324 | int filegid; |
fe14fcc3 |
325 | static int filemode = 0; |
326 | static int lastfd; |
327 | static char *oldname; |
328 | |
329 | if (!argvoutstab) |
330 | argvoutstab = stabent("ARGVOUT",TRUE); |
331 | if (filemode & (S_ISUID|S_ISGID)) { |
332 | fflush(stab_io(argvoutstab)->ifp); /* chmod must follow last write */ |
333 | #ifdef HAS_FCHMOD |
334 | (void)fchmod(lastfd,filemode); |
335 | #else |
336 | (void)chmod(oldname,filemode); |
337 | #endif |
338 | } |
339 | filemode = 0; |
a687059c |
340 | while (alen(stab_xarray(stab)) >= 0) { |
341 | str = ashift(stab_xarray(stab)); |
342 | str_sset(stab_val(stab),str); |
343 | STABSET(stab_val(stab)); |
344 | oldname = str_get(stab_val(stab)); |
afd9f252 |
345 | if (do_open(stab,oldname,stab_val(stab)->str_cur)) { |
a687059c |
346 | if (inplace) { |
347 | #ifdef TAINT |
348 | taintproper("Insecure dependency in inplace open"); |
349 | #endif |
c623bd54 |
350 | if (strEQ(oldname,"-")) { |
351 | str_free(str); |
352 | defoutstab = stabent("STDOUT",TRUE); |
353 | return stab_io(stab)->ifp; |
354 | } |
99b89507 |
355 | #ifndef FLEXFILENAMES |
c623bd54 |
356 | filedev = statbuf.st_dev; |
357 | fileino = statbuf.st_ino; |
99b89507 |
358 | #endif |
a687059c |
359 | filemode = statbuf.st_mode; |
360 | fileuid = statbuf.st_uid; |
361 | filegid = statbuf.st_gid; |
c623bd54 |
362 | if (!S_ISREG(filemode)) { |
363 | warn("Can't do inplace edit: %s is not a regular file", |
364 | oldname ); |
365 | do_close(stab,FALSE); |
366 | str_free(str); |
367 | continue; |
368 | } |
a687059c |
369 | if (*inplace) { |
ff8e2863 |
370 | #ifdef SUFFIX |
371 | add_suffix(str,inplace); |
372 | #else |
a687059c |
373 | str_cat(str,inplace); |
ff8e2863 |
374 | #endif |
c623bd54 |
375 | #ifndef FLEXFILENAMES |
376 | if (stat(str->str_ptr,&statbuf) >= 0 |
377 | && statbuf.st_dev == filedev |
378 | && statbuf.st_ino == fileino ) { |
379 | warn("Can't do inplace edit: %s > 14 characters", |
380 | str->str_ptr ); |
381 | do_close(stab,FALSE); |
382 | str_free(str); |
383 | continue; |
384 | } |
385 | #endif |
fe14fcc3 |
386 | #ifdef HAS_RENAME |
ff8e2863 |
387 | #ifndef MSDOS |
c623bd54 |
388 | if (rename(oldname,str->str_ptr) < 0) { |
389 | warn("Can't rename %s to %s: %s, skipping file", |
390 | oldname, str->str_ptr, strerror(errno) ); |
391 | do_close(stab,FALSE); |
392 | str_free(str); |
393 | continue; |
394 | } |
a687059c |
395 | #else |
ff8e2863 |
396 | do_close(stab,FALSE); |
397 | (void)unlink(str->str_ptr); |
398 | (void)rename(oldname,str->str_ptr); |
399 | do_open(stab,str->str_ptr,stab_val(stab)->str_cur); |
400 | #endif /* MSDOS */ |
401 | #else |
a687059c |
402 | (void)UNLINK(str->str_ptr); |
c623bd54 |
403 | if (link(oldname,str->str_ptr) < 0) { |
404 | warn("Can't rename %s to %s: %s, skipping file", |
405 | oldname, str->str_ptr, strerror(errno) ); |
406 | do_close(stab,FALSE); |
407 | str_free(str); |
408 | continue; |
409 | } |
a687059c |
410 | (void)UNLINK(oldname); |
411 | #endif |
412 | } |
413 | else { |
ff8e2863 |
414 | #ifndef MSDOS |
fe14fcc3 |
415 | if (UNLINK(oldname) < 0) { |
416 | warn("Can't rename %s to %s: %s, skipping file", |
417 | oldname, str->str_ptr, strerror(errno) ); |
418 | do_close(stab,FALSE); |
419 | str_free(str); |
420 | continue; |
421 | } |
ff8e2863 |
422 | #else |
423 | fatal("Can't do inplace edit without backup"); |
424 | #endif |
a687059c |
425 | } |
426 | |
427 | str_nset(str,">",1); |
428 | str_cat(str,oldname); |
429 | errno = 0; /* in case sprintf set errno */ |
fe14fcc3 |
430 | if (!do_open(argvoutstab,str->str_ptr,str->str_cur)) { |
c623bd54 |
431 | warn("Can't do inplace edit on %s: %s", |
432 | oldname, strerror(errno) ); |
fe14fcc3 |
433 | do_close(stab,FALSE); |
434 | str_free(str); |
435 | continue; |
436 | } |
a687059c |
437 | defoutstab = argvoutstab; |
fe14fcc3 |
438 | lastfd = fileno(stab_io(argvoutstab)->ifp); |
439 | (void)fstat(lastfd,&statbuf); |
440 | #ifdef HAS_FCHMOD |
441 | (void)fchmod(lastfd,filemode); |
a687059c |
442 | #else |
443 | (void)chmod(oldname,filemode); |
444 | #endif |
fe14fcc3 |
445 | if (fileuid != statbuf.st_uid || filegid != statbuf.st_gid) { |
446 | #ifdef HAS_FCHOWN |
447 | (void)fchown(lastfd,fileuid,filegid); |
a687059c |
448 | #else |
fe14fcc3 |
449 | #ifdef HAS_CHOWN |
450 | (void)chown(oldname,fileuid,filegid); |
a687059c |
451 | #endif |
b1248f16 |
452 | #endif |
fe14fcc3 |
453 | } |
a687059c |
454 | } |
455 | str_free(str); |
456 | return stab_io(stab)->ifp; |
457 | } |
458 | else |
c623bd54 |
459 | fprintf(stderr,"Can't open %s: %s\n",str_get(str), strerror(errno)); |
a687059c |
460 | str_free(str); |
461 | } |
462 | if (inplace) { |
463 | (void)do_close(argvoutstab,FALSE); |
464 | defoutstab = stabent("STDOUT",TRUE); |
465 | } |
466 | return Nullfp; |
467 | } |
468 | |
fe14fcc3 |
469 | #ifdef HAS_PIPE |
afd9f252 |
470 | void |
471 | do_pipe(str, rstab, wstab) |
472 | STR *str; |
473 | STAB *rstab; |
474 | STAB *wstab; |
475 | { |
476 | register STIO *rstio; |
477 | register STIO *wstio; |
478 | int fd[2]; |
479 | |
480 | if (!rstab) |
481 | goto badexit; |
482 | if (!wstab) |
483 | goto badexit; |
484 | |
485 | rstio = stab_io(rstab); |
486 | wstio = stab_io(wstab); |
487 | |
488 | if (!rstio) |
489 | rstio = stab_io(rstab) = stio_new(); |
490 | else if (rstio->ifp) |
491 | do_close(rstab,FALSE); |
492 | if (!wstio) |
493 | wstio = stab_io(wstab) = stio_new(); |
494 | else if (wstio->ifp) |
495 | do_close(wstab,FALSE); |
496 | |
497 | if (pipe(fd) < 0) |
498 | goto badexit; |
499 | rstio->ifp = fdopen(fd[0], "r"); |
500 | wstio->ofp = fdopen(fd[1], "w"); |
501 | wstio->ifp = wstio->ofp; |
502 | rstio->type = '<'; |
503 | wstio->type = '>'; |
fe14fcc3 |
504 | if (!rstio->ifp || !wstio->ofp) { |
505 | if (rstio->ifp) fclose(rstio->ifp); |
506 | else close(fd[0]); |
507 | if (wstio->ofp) fclose(wstio->ofp); |
508 | else close(fd[1]); |
509 | goto badexit; |
510 | } |
afd9f252 |
511 | |
512 | str_sset(str,&str_yes); |
513 | return; |
514 | |
515 | badexit: |
516 | str_sset(str,&str_undef); |
517 | return; |
518 | } |
b1248f16 |
519 | #endif |
afd9f252 |
520 | |
a687059c |
521 | bool |
522 | do_close(stab,explicit) |
523 | STAB *stab; |
524 | bool explicit; |
525 | { |
526 | bool retval = FALSE; |
c2ab57d4 |
527 | register STIO *stio; |
a687059c |
528 | int status; |
529 | |
c2ab57d4 |
530 | if (!stab) |
531 | stab = argvstab; |
99b89507 |
532 | if (!stab) { |
533 | errno = EBADF; |
c2ab57d4 |
534 | return FALSE; |
99b89507 |
535 | } |
c2ab57d4 |
536 | stio = stab_io(stab); |
a687059c |
537 | if (!stio) { /* never opened */ |
538 | if (dowarn && explicit) |
539 | warn("Close on unopened file <%s>",stab_name(stab)); |
540 | return FALSE; |
541 | } |
542 | if (stio->ifp) { |
543 | if (stio->type == '|') { |
544 | status = mypclose(stio->ifp); |
c623bd54 |
545 | retval = (status == 0); |
b1248f16 |
546 | statusvalue = (unsigned short)status & 0xffff; |
a687059c |
547 | } |
548 | else if (stio->type == '-') |
549 | retval = TRUE; |
550 | else { |
c2ab57d4 |
551 | if (stio->ofp && stio->ofp != stio->ifp) { /* a socket */ |
552 | retval = (fclose(stio->ofp) != EOF); |
553 | fclose(stio->ifp); /* clear stdio, fd already closed */ |
554 | } |
555 | else |
556 | retval = (fclose(stio->ifp) != EOF); |
a687059c |
557 | } |
558 | stio->ofp = stio->ifp = Nullfp; |
559 | } |
560 | if (explicit) |
561 | stio->lines = 0; |
562 | stio->type = ' '; |
563 | return retval; |
564 | } |
565 | |
566 | bool |
567 | do_eof(stab) |
568 | STAB *stab; |
569 | { |
570 | register STIO *stio; |
571 | int ch; |
572 | |
573 | if (!stab) { /* eof() */ |
574 | if (argvstab) |
575 | stio = stab_io(argvstab); |
576 | else |
577 | return TRUE; |
578 | } |
579 | else |
580 | stio = stab_io(stab); |
581 | |
582 | if (!stio) |
583 | return TRUE; |
584 | |
585 | while (stio->ifp) { |
586 | |
587 | #ifdef STDSTDIO /* (the code works without this) */ |
588 | if (stio->ifp->_cnt > 0) /* cheat a little, since */ |
589 | return FALSE; /* this is the most usual case */ |
590 | #endif |
591 | |
592 | ch = getc(stio->ifp); |
593 | if (ch != EOF) { |
594 | (void)ungetc(ch, stio->ifp); |
595 | return FALSE; |
596 | } |
fe14fcc3 |
597 | #ifdef STDSTDIO |
598 | if (stio->ifp->_cnt < -1) |
599 | stio->ifp->_cnt = -1; |
600 | #endif |
a687059c |
601 | if (!stab) { /* not necessarily a real EOF yet? */ |
602 | if (!nextargv(argvstab)) /* get another fp handy */ |
603 | return TRUE; |
604 | } |
605 | else |
606 | return TRUE; /* normal fp, definitely end of file */ |
607 | } |
608 | return TRUE; |
609 | } |
610 | |
611 | long |
612 | do_tell(stab) |
613 | STAB *stab; |
614 | { |
615 | register STIO *stio; |
616 | |
617 | if (!stab) |
618 | goto phooey; |
619 | |
620 | stio = stab_io(stab); |
621 | if (!stio || !stio->ifp) |
622 | goto phooey; |
623 | |
624 | if (feof(stio->ifp)) |
625 | (void)fseek (stio->ifp, 0L, 2); /* ultrix 1.2 workaround */ |
626 | |
627 | return ftell(stio->ifp); |
628 | |
629 | phooey: |
630 | if (dowarn) |
631 | warn("tell() on unopened file"); |
99b89507 |
632 | errno = EBADF; |
a687059c |
633 | return -1L; |
634 | } |
635 | |
636 | bool |
637 | do_seek(stab, pos, whence) |
638 | STAB *stab; |
639 | long pos; |
640 | int whence; |
641 | { |
642 | register STIO *stio; |
643 | |
644 | if (!stab) |
645 | goto nuts; |
646 | |
647 | stio = stab_io(stab); |
648 | if (!stio || !stio->ifp) |
649 | goto nuts; |
650 | |
651 | if (feof(stio->ifp)) |
652 | (void)fseek (stio->ifp, 0L, 2); /* ultrix 1.2 workaround */ |
653 | |
654 | return fseek(stio->ifp, pos, whence) >= 0; |
655 | |
656 | nuts: |
657 | if (dowarn) |
658 | warn("seek() on unopened file"); |
99b89507 |
659 | errno = EBADF; |
a687059c |
660 | return FALSE; |
661 | } |
662 | |
663 | int |
664 | do_ctl(optype,stab,func,argstr) |
665 | int optype; |
666 | STAB *stab; |
667 | int func; |
668 | STR *argstr; |
669 | { |
670 | register STIO *stio; |
671 | register char *s; |
672 | int retval; |
673 | |
99b89507 |
674 | if (!stab || !argstr || !(stio = stab_io(stab)) || !stio->ifp) { |
675 | errno = EBADF; /* well, sort of... */ |
a687059c |
676 | return -1; |
99b89507 |
677 | } |
a687059c |
678 | |
679 | if (argstr->str_pok || !argstr->str_nok) { |
680 | if (!argstr->str_pok) |
681 | s = str_get(argstr); |
682 | |
683 | #ifdef IOCPARM_MASK |
684 | #ifndef IOCPARM_LEN |
685 | #define IOCPARM_LEN(x) (((x) >> 16) & IOCPARM_MASK) |
686 | #endif |
687 | #endif |
688 | #ifdef IOCPARM_LEN |
689 | retval = IOCPARM_LEN(func); /* on BSDish systes we're safe */ |
690 | #else |
691 | retval = 256; /* otherwise guess at what's safe */ |
692 | #endif |
693 | if (argstr->str_cur < retval) { |
ff8e2863 |
694 | Str_Grow(argstr,retval+1); |
a687059c |
695 | argstr->str_cur = retval; |
696 | } |
697 | |
698 | s = argstr->str_ptr; |
699 | s[argstr->str_cur] = 17; /* a little sanity check here */ |
700 | } |
701 | else { |
702 | retval = (int)str_gnum(argstr); |
c2ab57d4 |
703 | #ifdef MSDOS |
704 | s = (char*)(long)retval; /* ouch */ |
705 | #else |
a687059c |
706 | s = (char*)retval; /* ouch */ |
c2ab57d4 |
707 | #endif |
a687059c |
708 | } |
709 | |
710 | #ifndef lint |
711 | if (optype == O_IOCTL) |
712 | retval = ioctl(fileno(stio->ifp), func, s); |
713 | else |
57ebbfd0 |
714 | #ifdef MSDOS |
715 | fatal("fcntl is not implemented"); |
716 | #else |
fe14fcc3 |
717 | #ifdef HAS_FCNTL |
a687059c |
718 | retval = fcntl(fileno(stio->ifp), func, s); |
719 | #else |
720 | fatal("fcntl is not implemented"); |
721 | #endif |
57ebbfd0 |
722 | #endif |
a687059c |
723 | #else /* lint */ |
724 | retval = 0; |
725 | #endif /* lint */ |
726 | |
727 | if (argstr->str_pok) { |
728 | if (s[argstr->str_cur] != 17) |
729 | fatal("Return value overflowed string"); |
730 | s[argstr->str_cur] = 0; /* put our null back */ |
731 | } |
732 | return retval; |
733 | } |
734 | |
735 | int |
736 | do_stat(str,arg,gimme,arglast) |
737 | STR *str; |
738 | register ARG *arg; |
739 | int gimme; |
740 | int *arglast; |
741 | { |
742 | register ARRAY *ary = stack; |
743 | register int sp = arglast[0] + 1; |
744 | int max = 13; |
a687059c |
745 | |
746 | if ((arg[1].arg_type & A_MASK) == A_WORD) { |
747 | tmpstab = arg[1].arg_ptr.arg_stab; |
748 | if (tmpstab != defstab) { |
fe14fcc3 |
749 | laststype = O_STAT; |
a687059c |
750 | statstab = tmpstab; |
751 | str_set(statname,""); |
c2ab57d4 |
752 | if (!stab_io(tmpstab) || !stab_io(tmpstab)->ifp || |
a687059c |
753 | fstat(fileno(stab_io(tmpstab)->ifp),&statcache) < 0) { |
754 | max = 0; |
57ebbfd0 |
755 | laststatval = -1; |
a687059c |
756 | } |
757 | } |
57ebbfd0 |
758 | else if (laststatval < 0) |
759 | max = 0; |
a687059c |
760 | } |
761 | else { |
c623bd54 |
762 | str_set(statname,str_get(ary->ary_array[sp])); |
a687059c |
763 | statstab = Nullstab; |
fe14fcc3 |
764 | #ifdef HAS_LSTAT |
765 | laststype = arg->arg_type; |
a687059c |
766 | if (arg->arg_type == O_LSTAT) |
57ebbfd0 |
767 | laststatval = lstat(str_get(statname),&statcache); |
a687059c |
768 | else |
769 | #endif |
57ebbfd0 |
770 | laststatval = stat(str_get(statname),&statcache); |
771 | if (laststatval < 0) |
a687059c |
772 | max = 0; |
773 | } |
774 | |
775 | if (gimme != G_ARRAY) { |
776 | if (max) |
777 | str_sset(str,&str_yes); |
778 | else |
779 | str_sset(str,&str_undef); |
780 | STABSET(str); |
781 | ary->ary_array[sp] = str; |
782 | return sp; |
783 | } |
784 | sp--; |
785 | if (max) { |
786 | #ifndef lint |
787 | (void)astore(ary,++sp, |
fe14fcc3 |
788 | str_2mortal(str_nmake((double)statcache.st_dev))); |
a687059c |
789 | (void)astore(ary,++sp, |
fe14fcc3 |
790 | str_2mortal(str_nmake((double)statcache.st_ino))); |
a687059c |
791 | (void)astore(ary,++sp, |
fe14fcc3 |
792 | str_2mortal(str_nmake((double)statcache.st_mode))); |
a687059c |
793 | (void)astore(ary,++sp, |
fe14fcc3 |
794 | str_2mortal(str_nmake((double)statcache.st_nlink))); |
a687059c |
795 | (void)astore(ary,++sp, |
fe14fcc3 |
796 | str_2mortal(str_nmake((double)statcache.st_uid))); |
a687059c |
797 | (void)astore(ary,++sp, |
fe14fcc3 |
798 | str_2mortal(str_nmake((double)statcache.st_gid))); |
a687059c |
799 | (void)astore(ary,++sp, |
fe14fcc3 |
800 | str_2mortal(str_nmake((double)statcache.st_rdev))); |
a687059c |
801 | (void)astore(ary,++sp, |
fe14fcc3 |
802 | str_2mortal(str_nmake((double)statcache.st_size))); |
a687059c |
803 | (void)astore(ary,++sp, |
fe14fcc3 |
804 | str_2mortal(str_nmake((double)statcache.st_atime))); |
a687059c |
805 | (void)astore(ary,++sp, |
fe14fcc3 |
806 | str_2mortal(str_nmake((double)statcache.st_mtime))); |
a687059c |
807 | (void)astore(ary,++sp, |
fe14fcc3 |
808 | str_2mortal(str_nmake((double)statcache.st_ctime))); |
a687059c |
809 | #ifdef STATBLOCKS |
810 | (void)astore(ary,++sp, |
fe14fcc3 |
811 | str_2mortal(str_nmake((double)statcache.st_blksize))); |
a687059c |
812 | (void)astore(ary,++sp, |
fe14fcc3 |
813 | str_2mortal(str_nmake((double)statcache.st_blocks))); |
a687059c |
814 | #else |
815 | (void)astore(ary,++sp, |
fe14fcc3 |
816 | str_2mortal(str_make("",0))); |
a687059c |
817 | (void)astore(ary,++sp, |
fe14fcc3 |
818 | str_2mortal(str_make("",0))); |
a687059c |
819 | #endif |
820 | #else /* lint */ |
821 | (void)astore(ary,++sp,str_nmake(0.0)); |
822 | #endif /* lint */ |
823 | } |
824 | return sp; |
825 | } |
826 | |
fe14fcc3 |
827 | #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP) |
c2ab57d4 |
828 | /* code courtesy of William Kucharski */ |
fe14fcc3 |
829 | #define HAS_CHSIZE |
6eb13c3b |
830 | |
831 | int chsize(fd, length) |
832 | int fd; /* file descriptor */ |
833 | off_t length; /* length to set file to */ |
834 | { |
835 | extern long lseek(); |
836 | struct flock fl; |
837 | struct stat filebuf; |
838 | |
839 | if (fstat(fd, &filebuf) < 0) |
840 | return -1; |
841 | |
842 | if (filebuf.st_size < length) { |
843 | |
844 | /* extend file length */ |
845 | |
846 | if ((lseek(fd, (length - 1), 0)) < 0) |
847 | return -1; |
848 | |
849 | /* write a "0" byte */ |
850 | |
851 | if ((write(fd, "", 1)) != 1) |
852 | return -1; |
853 | } |
854 | else { |
855 | /* truncate length */ |
856 | |
857 | fl.l_whence = 0; |
858 | fl.l_len = 0; |
859 | fl.l_start = length; |
860 | fl.l_type = F_WRLCK; /* write lock on file space */ |
861 | |
862 | /* |
863 | * This relies on the UNDOCUMENTED F_FREESP argument to |
864 | * fcntl(2), which truncates the file so that it ends at the |
865 | * position indicated by fl.l_start. |
866 | * |
867 | * Will minor miracles never cease? |
868 | */ |
869 | |
870 | if (fcntl(fd, F_FREESP, &fl) < 0) |
871 | return -1; |
872 | |
873 | } |
874 | |
875 | return 0; |
876 | } |
877 | #endif /* F_FREESP */ |
878 | |
99b89507 |
879 | int /*SUPPRESS 590*/ |
ff8e2863 |
880 | do_truncate(str,arg,gimme,arglast) |
881 | STR *str; |
882 | register ARG *arg; |
883 | int gimme; |
884 | int *arglast; |
885 | { |
886 | register ARRAY *ary = stack; |
887 | register int sp = arglast[0] + 1; |
888 | off_t len = (off_t)str_gnum(ary->ary_array[sp+1]); |
889 | int result = 1; |
890 | STAB *tmpstab; |
891 | |
fe14fcc3 |
892 | #if defined(HAS_TRUNCATE) || defined(HAS_CHSIZE) |
893 | #ifdef HAS_TRUNCATE |
ff8e2863 |
894 | if ((arg[1].arg_type & A_MASK) == A_WORD) { |
895 | tmpstab = arg[1].arg_ptr.arg_stab; |
99b89507 |
896 | if (!stab_io(tmpstab) || !stab_io(tmpstab)->ifp || |
ff8e2863 |
897 | ftruncate(fileno(stab_io(tmpstab)->ifp), len) < 0) |
898 | result = 0; |
899 | } |
900 | else if (truncate(str_get(ary->ary_array[sp]), len) < 0) |
901 | result = 0; |
902 | #else |
ff8e2863 |
903 | if ((arg[1].arg_type & A_MASK) == A_WORD) { |
904 | tmpstab = arg[1].arg_ptr.arg_stab; |
99b89507 |
905 | if (!stab_io(tmpstab) || !stab_io(tmpstab)->ifp || |
ff8e2863 |
906 | chsize(fileno(stab_io(tmpstab)->ifp), len) < 0) |
907 | result = 0; |
908 | } |
909 | else { |
910 | int tmpfd; |
911 | |
912 | if ((tmpfd = open(str_get(ary->ary_array[sp]), 0)) < 0) |
913 | result = 0; |
914 | else { |
915 | if (chsize(tmpfd, len) < 0) |
916 | result = 0; |
917 | close(tmpfd); |
918 | } |
919 | } |
920 | #endif |
921 | |
922 | if (result) |
923 | str_sset(str,&str_yes); |
924 | else |
925 | str_sset(str,&str_undef); |
926 | STABSET(str); |
927 | ary->ary_array[sp] = str; |
928 | return sp; |
929 | #else |
930 | fatal("truncate not implemented"); |
931 | #endif |
932 | } |
933 | |
934 | int |
a687059c |
935 | looks_like_number(str) |
936 | STR *str; |
937 | { |
938 | register char *s; |
939 | register char *send; |
940 | |
941 | if (!str->str_pok) |
942 | return TRUE; |
943 | s = str->str_ptr; |
944 | send = s + str->str_cur; |
99b89507 |
945 | while (isSPACE(*s)) |
a687059c |
946 | s++; |
947 | if (s >= send) |
948 | return FALSE; |
949 | if (*s == '+' || *s == '-') |
950 | s++; |
99b89507 |
951 | while (isDIGIT(*s)) |
a687059c |
952 | s++; |
953 | if (s == send) |
954 | return TRUE; |
955 | if (*s == '.') |
956 | s++; |
957 | else if (s == str->str_ptr) |
958 | return FALSE; |
99b89507 |
959 | while (isDIGIT(*s)) |
a687059c |
960 | s++; |
961 | if (s == send) |
962 | return TRUE; |
963 | if (*s == 'e' || *s == 'E') { |
964 | s++; |
965 | if (*s == '+' || *s == '-') |
966 | s++; |
99b89507 |
967 | while (isDIGIT(*s)) |
a687059c |
968 | s++; |
969 | } |
99b89507 |
970 | while (isSPACE(*s)) |
a687059c |
971 | s++; |
972 | if (s >= send) |
973 | return TRUE; |
974 | return FALSE; |
975 | } |
976 | |
977 | bool |
978 | do_print(str,fp) |
979 | register STR *str; |
980 | FILE *fp; |
981 | { |
982 | register char *tmps; |
983 | |
984 | if (!fp) { |
985 | if (dowarn) |
986 | warn("print to unopened file"); |
99b89507 |
987 | errno = EBADF; |
a687059c |
988 | return FALSE; |
989 | } |
990 | if (!str) |
ff8e2863 |
991 | return TRUE; |
a687059c |
992 | if (ofmt && |
993 | ((str->str_nok && str->str_u.str_nval != 0.0) |
ff8e2863 |
994 | || (looks_like_number(str) && str_gnum(str) != 0.0) ) ) { |
a687059c |
995 | fprintf(fp, ofmt, str->str_u.str_nval); |
ff8e2863 |
996 | return !ferror(fp); |
997 | } |
a687059c |
998 | else { |
999 | tmps = str_get(str); |
c2ab57d4 |
1000 | if (*tmps == 'S' && tmps[1] == 't' && tmps[2] == 'B' && tmps[3] == '\0' |
a687059c |
1001 | && str->str_cur == sizeof(STBP) && strlen(tmps) < str->str_cur) { |
fe14fcc3 |
1002 | STR *tmpstr = str_mortal(&str_undef); |
c2ab57d4 |
1003 | stab_fullname(tmpstr,((STAB*)str));/* a stab value, be nice */ |
1004 | str = tmpstr; |
1005 | tmps = str->str_ptr; |
a687059c |
1006 | putc('*',fp); |
1007 | } |
ff8e2863 |
1008 | if (str->str_cur && (fwrite(tmps,1,str->str_cur,fp) == 0 || ferror(fp))) |
a687059c |
1009 | return FALSE; |
1010 | } |
1011 | return TRUE; |
1012 | } |
1013 | |
1014 | bool |
1015 | do_aprint(arg,fp,arglast) |
1016 | register ARG *arg; |
1017 | register FILE *fp; |
1018 | int *arglast; |
1019 | { |
1020 | register STR **st = stack->ary_array; |
1021 | register int sp = arglast[1]; |
1022 | register int retval; |
1023 | register int items = arglast[2] - sp; |
1024 | |
1025 | if (!fp) { |
1026 | if (dowarn) |
1027 | warn("print to unopened file"); |
99b89507 |
1028 | errno = EBADF; |
a687059c |
1029 | return FALSE; |
1030 | } |
1031 | st += ++sp; |
1032 | if (arg->arg_type == O_PRTF) { |
1033 | do_sprintf(arg->arg_ptr.arg_str,items,st); |
1034 | retval = do_print(arg->arg_ptr.arg_str,fp); |
1035 | } |
1036 | else { |
1037 | retval = (items <= 0); |
1038 | for (; items > 0; items--,st++) { |
1039 | if (retval && ofslen) { |
ff8e2863 |
1040 | if (fwrite(ofs, 1, ofslen, fp) == 0 || ferror(fp)) { |
a687059c |
1041 | retval = FALSE; |
1042 | break; |
1043 | } |
1044 | } |
1045 | if (!(retval = do_print(*st, fp))) |
1046 | break; |
1047 | } |
1048 | if (retval && orslen) |
ff8e2863 |
1049 | if (fwrite(ors, 1, orslen, fp) == 0 || ferror(fp)) |
a687059c |
1050 | retval = FALSE; |
1051 | } |
1052 | return retval; |
1053 | } |
1054 | |
1055 | int |
1056 | mystat(arg,str) |
1057 | ARG *arg; |
1058 | STR *str; |
1059 | { |
1060 | STIO *stio; |
1061 | |
1062 | if (arg[1].arg_type & A_DONT) { |
1063 | stio = stab_io(arg[1].arg_ptr.arg_stab); |
1064 | if (stio && stio->ifp) { |
1065 | statstab = arg[1].arg_ptr.arg_stab; |
1066 | str_set(statname,""); |
99b89507 |
1067 | laststype = O_STAT; |
57ebbfd0 |
1068 | return (laststatval = fstat(fileno(stio->ifp), &statcache)); |
a687059c |
1069 | } |
1070 | else { |
1071 | if (arg[1].arg_ptr.arg_stab == defstab) |
57ebbfd0 |
1072 | return laststatval; |
a687059c |
1073 | if (dowarn) |
1074 | warn("Stat on unopened file <%s>", |
1075 | stab_name(arg[1].arg_ptr.arg_stab)); |
1076 | statstab = Nullstab; |
1077 | str_set(statname,""); |
57ebbfd0 |
1078 | return (laststatval = -1); |
a687059c |
1079 | } |
1080 | } |
1081 | else { |
1082 | statstab = Nullstab; |
c623bd54 |
1083 | str_set(statname,str_get(str)); |
99b89507 |
1084 | laststype = O_STAT; |
57ebbfd0 |
1085 | return (laststatval = stat(str_get(str),&statcache)); |
a687059c |
1086 | } |
1087 | } |
1088 | |
c623bd54 |
1089 | int |
1090 | mylstat(arg,str) |
1091 | ARG *arg; |
1092 | STR *str; |
1093 | { |
fe14fcc3 |
1094 | if (arg[1].arg_type & A_DONT) { |
1095 | if (arg[1].arg_ptr.arg_stab == defstab) { |
1096 | if (laststype != O_LSTAT) |
1097 | fatal("The stat preceding -l _ wasn't an lstat"); |
1098 | return laststatval; |
1099 | } |
1100 | fatal("You can't use -l on a filehandle"); |
1101 | } |
c623bd54 |
1102 | |
fe14fcc3 |
1103 | laststype = O_LSTAT; |
c623bd54 |
1104 | statstab = Nullstab; |
1105 | str_set(statname,str_get(str)); |
fe14fcc3 |
1106 | #ifdef HAS_LSTAT |
c623bd54 |
1107 | return (laststatval = lstat(str_get(str),&statcache)); |
1108 | #else |
1109 | return (laststatval = stat(str_get(str),&statcache)); |
1110 | #endif |
1111 | } |
1112 | |
a687059c |
1113 | STR * |
1114 | do_fttext(arg,str) |
1115 | register ARG *arg; |
1116 | STR *str; |
1117 | { |
1118 | int i; |
1119 | int len; |
1120 | int odd = 0; |
1121 | STDCHAR tbuf[512]; |
1122 | register STDCHAR *s; |
1123 | register STIO *stio; |
1124 | |
1125 | if (arg[1].arg_type & A_DONT) { |
1126 | if (arg[1].arg_ptr.arg_stab == defstab) { |
1127 | if (statstab) |
1128 | stio = stab_io(statstab); |
1129 | else { |
1130 | str = statname; |
1131 | goto really_filename; |
1132 | } |
1133 | } |
1134 | else { |
1135 | statstab = arg[1].arg_ptr.arg_stab; |
1136 | str_set(statname,""); |
1137 | stio = stab_io(statstab); |
1138 | } |
1139 | if (stio && stio->ifp) { |
1140 | #ifdef STDSTDIO |
1141 | fstat(fileno(stio->ifp),&statcache); |
99b89507 |
1142 | if (S_ISDIR(statcache.st_mode)) /* handle NFS glitch */ |
1143 | return arg->arg_type == O_FTTEXT ? &str_no : &str_yes; |
a687059c |
1144 | if (stio->ifp->_cnt <= 0) { |
1145 | i = getc(stio->ifp); |
1146 | if (i != EOF) |
1147 | (void)ungetc(i,stio->ifp); |
1148 | } |
1149 | if (stio->ifp->_cnt <= 0) /* null file is anything */ |
1150 | return &str_yes; |
1151 | len = stio->ifp->_cnt + (stio->ifp->_ptr - stio->ifp->_base); |
1152 | s = stio->ifp->_base; |
1153 | #else |
99b89507 |
1154 | fatal("-T and -B not implemented on filehandles"); |
a687059c |
1155 | #endif |
1156 | } |
1157 | else { |
1158 | if (dowarn) |
1159 | warn("Test on unopened file <%s>", |
1160 | stab_name(arg[1].arg_ptr.arg_stab)); |
99b89507 |
1161 | errno = EBADF; |
a687059c |
1162 | return &str_undef; |
1163 | } |
1164 | } |
1165 | else { |
1166 | statstab = Nullstab; |
c623bd54 |
1167 | str_set(statname,str_get(str)); |
a687059c |
1168 | really_filename: |
1169 | i = open(str_get(str),0); |
1170 | if (i < 0) |
1171 | return &str_undef; |
1172 | fstat(i,&statcache); |
1173 | len = read(i,tbuf,512); |
fe14fcc3 |
1174 | (void)close(i); |
99b89507 |
1175 | if (len <= 0) { |
1176 | if (S_ISDIR(statcache.st_mode) && arg->arg_type == O_FTTEXT) |
1177 | return &str_no; /* special case NFS directories */ |
1178 | return &str_yes; /* null file is anything */ |
1179 | } |
a687059c |
1180 | s = tbuf; |
1181 | } |
1182 | |
1183 | /* now scan s to look for textiness */ |
1184 | |
1185 | for (i = 0; i < len; i++,s++) { |
1186 | if (!*s) { /* null never allowed in text */ |
1187 | odd += len; |
1188 | break; |
1189 | } |
1190 | else if (*s & 128) |
1191 | odd++; |
1192 | else if (*s < 32 && |
1193 | *s != '\n' && *s != '\r' && *s != '\b' && |
1194 | *s != '\t' && *s != '\f' && *s != 27) |
1195 | odd++; |
1196 | } |
1197 | |
1198 | if ((odd * 10 > len) == (arg->arg_type == O_FTTEXT)) /* allow 10% odd */ |
1199 | return &str_no; |
1200 | else |
1201 | return &str_yes; |
1202 | } |
1203 | |
1204 | bool |
1205 | do_aexec(really,arglast) |
1206 | STR *really; |
1207 | int *arglast; |
1208 | { |
1209 | register STR **st = stack->ary_array; |
1210 | register int sp = arglast[1]; |
1211 | register int items = arglast[2] - sp; |
1212 | register char **a; |
1213 | char **argv; |
1214 | char *tmps; |
1215 | |
1216 | if (items) { |
1217 | New(401,argv, items+1, char*); |
1218 | a = argv; |
1219 | for (st += ++sp; items > 0; items--,st++) { |
1220 | if (*st) |
1221 | *a++ = str_get(*st); |
1222 | else |
1223 | *a++ = ""; |
1224 | } |
1225 | *a = Nullch; |
1226 | #ifdef TAINT |
1227 | if (*argv[0] != '/') /* will execvp use PATH? */ |
1228 | taintenv(); /* testing IFS here is overkill, probably */ |
1229 | #endif |
1230 | if (really && *(tmps = str_get(really))) |
1231 | execvp(tmps,argv); |
1232 | else |
1233 | execvp(argv[0],argv); |
1234 | Safefree(argv); |
1235 | } |
1236 | return FALSE; |
1237 | } |
1238 | |
ff8e2863 |
1239 | static char **Argv = Null(char **); |
1240 | static char *Cmd = Nullch; |
1241 | |
fe14fcc3 |
1242 | void |
ff8e2863 |
1243 | do_execfree() |
1244 | { |
1245 | if (Argv) { |
1246 | Safefree(Argv); |
1247 | Argv = Null(char **); |
1248 | } |
1249 | if (Cmd) { |
1250 | Safefree(Cmd); |
1251 | Cmd = Nullch; |
1252 | } |
1253 | } |
1254 | |
a687059c |
1255 | bool |
1256 | do_exec(cmd) |
1257 | char *cmd; |
1258 | { |
1259 | register char **a; |
1260 | register char *s; |
a687059c |
1261 | char flags[10]; |
1262 | |
a687059c |
1263 | /* save an extra exec if possible */ |
1264 | |
bf38876a |
1265 | #ifdef CSH |
1266 | if (strnEQ(cmd,cshname,cshlen) && strnEQ(cmd+cshlen," -c",3)) { |
a687059c |
1267 | strcpy(flags,"-c"); |
bf38876a |
1268 | s = cmd+cshlen+3; |
a687059c |
1269 | if (*s == 'f') { |
1270 | s++; |
1271 | strcat(flags,"f"); |
1272 | } |
1273 | if (*s == ' ') |
1274 | s++; |
1275 | if (*s++ == '\'') { |
1276 | char *ncmd = s; |
1277 | |
1278 | while (*s) |
1279 | s++; |
1280 | if (s[-1] == '\n') |
1281 | *--s = '\0'; |
1282 | if (s[-1] == '\'') { |
1283 | *--s = '\0'; |
bf38876a |
1284 | execl(cshname,"csh", flags,ncmd,(char*)0); |
a687059c |
1285 | *s = '\''; |
1286 | return FALSE; |
1287 | } |
1288 | } |
1289 | } |
bf38876a |
1290 | #endif /* CSH */ |
a687059c |
1291 | |
1292 | /* see if there are shell metacharacters in it */ |
1293 | |
99b89507 |
1294 | /*SUPPRESS 530*/ |
1295 | for (s = cmd; *s && isALPHA(*s); s++) ; /* catch VAR=val gizmo */ |
63f2c1e1 |
1296 | if (*s == '=') |
1297 | goto doshell; |
a687059c |
1298 | for (s = cmd; *s; s++) { |
99b89507 |
1299 | if (*s != ' ' && !isALPHA(*s) && index("$&*(){}[]'\";\\|?<>~`\n",*s)) { |
a687059c |
1300 | if (*s == '\n' && !s[1]) { |
1301 | *s = '\0'; |
1302 | break; |
1303 | } |
1304 | doshell: |
1305 | execl("/bin/sh","sh","-c",cmd,(char*)0); |
1306 | return FALSE; |
1307 | } |
1308 | } |
ff8e2863 |
1309 | New(402,Argv, (s - cmd) / 2 + 2, char*); |
1310 | Cmd = nsavestr(cmd, s-cmd); |
1311 | a = Argv; |
1312 | for (s = Cmd; *s;) { |
99b89507 |
1313 | while (*s && isSPACE(*s)) s++; |
a687059c |
1314 | if (*s) |
1315 | *(a++) = s; |
99b89507 |
1316 | while (*s && !isSPACE(*s)) s++; |
a687059c |
1317 | if (*s) |
1318 | *s++ = '\0'; |
1319 | } |
1320 | *a = Nullch; |
ff8e2863 |
1321 | if (Argv[0]) { |
1322 | execvp(Argv[0],Argv); |
b1248f16 |
1323 | if (errno == ENOEXEC) { /* for system V NIH syndrome */ |
ff8e2863 |
1324 | do_execfree(); |
a687059c |
1325 | goto doshell; |
b1248f16 |
1326 | } |
a687059c |
1327 | } |
ff8e2863 |
1328 | do_execfree(); |
a687059c |
1329 | return FALSE; |
1330 | } |
1331 | |
fe14fcc3 |
1332 | #ifdef HAS_SOCKET |
a687059c |
1333 | int |
1334 | do_socket(stab, arglast) |
1335 | STAB *stab; |
1336 | int *arglast; |
1337 | { |
1338 | register STR **st = stack->ary_array; |
1339 | register int sp = arglast[1]; |
1340 | register STIO *stio; |
1341 | int domain, type, protocol, fd; |
1342 | |
99b89507 |
1343 | if (!stab) { |
1344 | errno = EBADF; |
a687059c |
1345 | return FALSE; |
99b89507 |
1346 | } |
a687059c |
1347 | |
1348 | stio = stab_io(stab); |
1349 | if (!stio) |
1350 | stio = stab_io(stab) = stio_new(); |
1351 | else if (stio->ifp) |
1352 | do_close(stab,FALSE); |
1353 | |
1354 | domain = (int)str_gnum(st[++sp]); |
1355 | type = (int)str_gnum(st[++sp]); |
1356 | protocol = (int)str_gnum(st[++sp]); |
1357 | #ifdef TAINT |
1358 | taintproper("Insecure dependency in socket"); |
1359 | #endif |
1360 | fd = socket(domain,type,protocol); |
1361 | if (fd < 0) |
1362 | return FALSE; |
1363 | stio->ifp = fdopen(fd, "r"); /* stdio gets confused about sockets */ |
1364 | stio->ofp = fdopen(fd, "w"); |
1365 | stio->type = 's'; |
fe14fcc3 |
1366 | if (!stio->ifp || !stio->ofp) { |
1367 | if (stio->ifp) fclose(stio->ifp); |
1368 | if (stio->ofp) fclose(stio->ofp); |
1369 | if (!stio->ifp && !stio->ofp) close(fd); |
1370 | return FALSE; |
1371 | } |
a687059c |
1372 | |
1373 | return TRUE; |
1374 | } |
1375 | |
1376 | int |
1377 | do_bind(stab, arglast) |
1378 | STAB *stab; |
1379 | int *arglast; |
1380 | { |
1381 | register STR **st = stack->ary_array; |
1382 | register int sp = arglast[1]; |
1383 | register STIO *stio; |
1384 | char *addr; |
1385 | |
1386 | if (!stab) |
1387 | goto nuts; |
1388 | |
1389 | stio = stab_io(stab); |
1390 | if (!stio || !stio->ifp) |
1391 | goto nuts; |
1392 | |
1393 | addr = str_get(st[++sp]); |
1394 | #ifdef TAINT |
1395 | taintproper("Insecure dependency in bind"); |
1396 | #endif |
1397 | return bind(fileno(stio->ifp), addr, st[sp]->str_cur) >= 0; |
1398 | |
1399 | nuts: |
1400 | if (dowarn) |
1401 | warn("bind() on closed fd"); |
99b89507 |
1402 | errno = EBADF; |
a687059c |
1403 | return FALSE; |
1404 | |
1405 | } |
1406 | |
1407 | int |
1408 | do_connect(stab, arglast) |
1409 | STAB *stab; |
1410 | int *arglast; |
1411 | { |
1412 | register STR **st = stack->ary_array; |
1413 | register int sp = arglast[1]; |
1414 | register STIO *stio; |
1415 | char *addr; |
1416 | |
1417 | if (!stab) |
1418 | goto nuts; |
1419 | |
1420 | stio = stab_io(stab); |
1421 | if (!stio || !stio->ifp) |
1422 | goto nuts; |
1423 | |
1424 | addr = str_get(st[++sp]); |
1425 | #ifdef TAINT |
1426 | taintproper("Insecure dependency in connect"); |
1427 | #endif |
1428 | return connect(fileno(stio->ifp), addr, st[sp]->str_cur) >= 0; |
1429 | |
1430 | nuts: |
1431 | if (dowarn) |
1432 | warn("connect() on closed fd"); |
99b89507 |
1433 | errno = EBADF; |
a687059c |
1434 | return FALSE; |
1435 | |
1436 | } |
1437 | |
1438 | int |
1439 | do_listen(stab, arglast) |
1440 | STAB *stab; |
1441 | int *arglast; |
1442 | { |
1443 | register STR **st = stack->ary_array; |
1444 | register int sp = arglast[1]; |
1445 | register STIO *stio; |
1446 | int backlog; |
1447 | |
1448 | if (!stab) |
1449 | goto nuts; |
1450 | |
1451 | stio = stab_io(stab); |
1452 | if (!stio || !stio->ifp) |
1453 | goto nuts; |
1454 | |
1455 | backlog = (int)str_gnum(st[++sp]); |
1456 | return listen(fileno(stio->ifp), backlog) >= 0; |
1457 | |
1458 | nuts: |
1459 | if (dowarn) |
1460 | warn("listen() on closed fd"); |
99b89507 |
1461 | errno = EBADF; |
a687059c |
1462 | return FALSE; |
1463 | } |
1464 | |
1465 | void |
1466 | do_accept(str, nstab, gstab) |
1467 | STR *str; |
1468 | STAB *nstab; |
1469 | STAB *gstab; |
1470 | { |
1471 | register STIO *nstio; |
1472 | register STIO *gstio; |
1473 | int len = sizeof buf; |
1474 | int fd; |
1475 | |
1476 | if (!nstab) |
1477 | goto badexit; |
1478 | if (!gstab) |
1479 | goto nuts; |
1480 | |
1481 | gstio = stab_io(gstab); |
1482 | nstio = stab_io(nstab); |
1483 | |
1484 | if (!gstio || !gstio->ifp) |
1485 | goto nuts; |
1486 | if (!nstio) |
1487 | nstio = stab_io(nstab) = stio_new(); |
1488 | else if (nstio->ifp) |
1489 | do_close(nstab,FALSE); |
1490 | |
6e21c824 |
1491 | fd = accept(fileno(gstio->ifp),(struct sockaddr *)buf,&len); |
a687059c |
1492 | if (fd < 0) |
1493 | goto badexit; |
1494 | nstio->ifp = fdopen(fd, "r"); |
1495 | nstio->ofp = fdopen(fd, "w"); |
1496 | nstio->type = 's'; |
fe14fcc3 |
1497 | if (!nstio->ifp || !nstio->ofp) { |
1498 | if (nstio->ifp) fclose(nstio->ifp); |
1499 | if (nstio->ofp) fclose(nstio->ofp); |
1500 | if (!nstio->ifp && !nstio->ofp) close(fd); |
1501 | goto badexit; |
1502 | } |
a687059c |
1503 | |
1504 | str_nset(str, buf, len); |
1505 | return; |
1506 | |
1507 | nuts: |
1508 | if (dowarn) |
1509 | warn("accept() on closed fd"); |
99b89507 |
1510 | errno = EBADF; |
a687059c |
1511 | badexit: |
1512 | str_sset(str,&str_undef); |
1513 | return; |
1514 | } |
1515 | |
1516 | int |
1517 | do_shutdown(stab, arglast) |
1518 | STAB *stab; |
1519 | int *arglast; |
1520 | { |
1521 | register STR **st = stack->ary_array; |
1522 | register int sp = arglast[1]; |
1523 | register STIO *stio; |
1524 | int how; |
1525 | |
1526 | if (!stab) |
1527 | goto nuts; |
1528 | |
1529 | stio = stab_io(stab); |
1530 | if (!stio || !stio->ifp) |
1531 | goto nuts; |
1532 | |
1533 | how = (int)str_gnum(st[++sp]); |
1534 | return shutdown(fileno(stio->ifp), how) >= 0; |
1535 | |
1536 | nuts: |
1537 | if (dowarn) |
1538 | warn("shutdown() on closed fd"); |
99b89507 |
1539 | errno = EBADF; |
a687059c |
1540 | return FALSE; |
1541 | |
1542 | } |
1543 | |
1544 | int |
1545 | do_sopt(optype, stab, arglast) |
1546 | int optype; |
1547 | STAB *stab; |
1548 | int *arglast; |
1549 | { |
1550 | register STR **st = stack->ary_array; |
1551 | register int sp = arglast[1]; |
1552 | register STIO *stio; |
1553 | int fd; |
1554 | int lvl; |
1555 | int optname; |
1556 | |
1557 | if (!stab) |
1558 | goto nuts; |
1559 | |
1560 | stio = stab_io(stab); |
1561 | if (!stio || !stio->ifp) |
1562 | goto nuts; |
1563 | |
1564 | fd = fileno(stio->ifp); |
1565 | lvl = (int)str_gnum(st[sp+1]); |
1566 | optname = (int)str_gnum(st[sp+2]); |
1567 | switch (optype) { |
1568 | case O_GSOCKOPT: |
99b89507 |
1569 | st[sp] = str_2mortal(Str_new(22,257)); |
a687059c |
1570 | st[sp]->str_cur = 256; |
bf38876a |
1571 | st[sp]->str_pok = 1; |
a687059c |
1572 | if (getsockopt(fd, lvl, optname, st[sp]->str_ptr, &st[sp]->str_cur) < 0) |
1573 | goto nuts; |
1574 | break; |
1575 | case O_SSOCKOPT: |
1576 | st[sp] = st[sp+3]; |
1577 | if (setsockopt(fd, lvl, optname, st[sp]->str_ptr, st[sp]->str_cur) < 0) |
1578 | goto nuts; |
1579 | st[sp] = &str_yes; |
1580 | break; |
1581 | } |
1582 | |
1583 | return sp; |
1584 | |
1585 | nuts: |
1586 | if (dowarn) |
bf38876a |
1587 | warn("[gs]etsockopt() on closed fd"); |
a687059c |
1588 | st[sp] = &str_undef; |
99b89507 |
1589 | errno = EBADF; |
a687059c |
1590 | return sp; |
1591 | |
1592 | } |
1593 | |
1594 | int |
1595 | do_getsockname(optype, stab, arglast) |
1596 | int optype; |
1597 | STAB *stab; |
1598 | int *arglast; |
1599 | { |
1600 | register STR **st = stack->ary_array; |
1601 | register int sp = arglast[1]; |
1602 | register STIO *stio; |
1603 | int fd; |
1604 | |
1605 | if (!stab) |
1606 | goto nuts; |
1607 | |
1608 | stio = stab_io(stab); |
1609 | if (!stio || !stio->ifp) |
1610 | goto nuts; |
1611 | |
99b89507 |
1612 | st[sp] = str_2mortal(Str_new(22,257)); |
a687059c |
1613 | st[sp]->str_cur = 256; |
bf38876a |
1614 | st[sp]->str_pok = 1; |
a687059c |
1615 | fd = fileno(stio->ifp); |
1616 | switch (optype) { |
1617 | case O_GETSOCKNAME: |
1618 | if (getsockname(fd, st[sp]->str_ptr, &st[sp]->str_cur) < 0) |
ff8e2863 |
1619 | goto nuts2; |
a687059c |
1620 | break; |
1621 | case O_GETPEERNAME: |
1622 | if (getpeername(fd, st[sp]->str_ptr, &st[sp]->str_cur) < 0) |
ff8e2863 |
1623 | goto nuts2; |
a687059c |
1624 | break; |
1625 | } |
1626 | |
1627 | return sp; |
1628 | |
1629 | nuts: |
1630 | if (dowarn) |
bf38876a |
1631 | warn("get{sock,peer}name() on closed fd"); |
99b89507 |
1632 | errno = EBADF; |
ff8e2863 |
1633 | nuts2: |
a687059c |
1634 | st[sp] = &str_undef; |
1635 | return sp; |
1636 | |
1637 | } |
1638 | |
1639 | int |
1640 | do_ghent(which,gimme,arglast) |
1641 | int which; |
1642 | int gimme; |
1643 | int *arglast; |
1644 | { |
1645 | register ARRAY *ary = stack; |
1646 | register int sp = arglast[0]; |
1647 | register char **elem; |
1648 | register STR *str; |
bf38876a |
1649 | struct hostent *gethostbyname(); |
a687059c |
1650 | struct hostent *gethostbyaddr(); |
fe14fcc3 |
1651 | #ifdef HAS_GETHOSTENT |
a687059c |
1652 | struct hostent *gethostent(); |
1653 | #endif |
1654 | struct hostent *hent; |
1655 | unsigned long len; |
1656 | |
1657 | if (gimme != G_ARRAY) { |
fe14fcc3 |
1658 | astore(ary, ++sp, str_mortal(&str_undef)); |
a687059c |
1659 | return sp; |
1660 | } |
1661 | |
1662 | if (which == O_GHBYNAME) { |
1663 | char *name = str_get(ary->ary_array[sp+1]); |
1664 | |
1665 | hent = gethostbyname(name); |
1666 | } |
1667 | else if (which == O_GHBYADDR) { |
1668 | STR *addrstr = ary->ary_array[sp+1]; |
1669 | int addrtype = (int)str_gnum(ary->ary_array[sp+2]); |
1670 | char *addr = str_get(addrstr); |
1671 | |
1672 | hent = gethostbyaddr(addr,addrstr->str_cur,addrtype); |
1673 | } |
1674 | else |
fe14fcc3 |
1675 | #ifdef HAS_GETHOSTENT |
a687059c |
1676 | hent = gethostent(); |
1677 | #else |
1678 | fatal("gethostent not implemented"); |
1679 | #endif |
1680 | if (hent) { |
1681 | #ifndef lint |
fe14fcc3 |
1682 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
1683 | str_set(str, hent->h_name); |
fe14fcc3 |
1684 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
1685 | for (elem = hent->h_aliases; *elem; elem++) { |
1686 | str_cat(str, *elem); |
1687 | if (elem[1]) |
1688 | str_ncat(str," ",1); |
1689 | } |
fe14fcc3 |
1690 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
1691 | str_numset(str, (double)hent->h_addrtype); |
fe14fcc3 |
1692 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
1693 | len = hent->h_length; |
1694 | str_numset(str, (double)len); |
1695 | #ifdef h_addr |
1696 | for (elem = hent->h_addr_list; *elem; elem++) { |
fe14fcc3 |
1697 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
1698 | str_nset(str, *elem, len); |
1699 | } |
1700 | #else |
fe14fcc3 |
1701 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
1702 | str_nset(str, hent->h_addr, len); |
1703 | #endif /* h_addr */ |
1704 | #else /* lint */ |
1705 | elem = Nullch; |
1706 | elem = elem; |
fe14fcc3 |
1707 | (void)astore(ary, ++sp, str_mortal(&str_no)); |
a687059c |
1708 | #endif /* lint */ |
1709 | } |
1710 | |
1711 | return sp; |
1712 | } |
1713 | |
1714 | int |
1715 | do_gnent(which,gimme,arglast) |
1716 | int which; |
1717 | int gimme; |
1718 | int *arglast; |
1719 | { |
1720 | register ARRAY *ary = stack; |
1721 | register int sp = arglast[0]; |
1722 | register char **elem; |
1723 | register STR *str; |
1724 | struct netent *getnetbyname(); |
1725 | struct netent *getnetbyaddr(); |
1726 | struct netent *getnetent(); |
1727 | struct netent *nent; |
1728 | |
1729 | if (gimme != G_ARRAY) { |
fe14fcc3 |
1730 | astore(ary, ++sp, str_mortal(&str_undef)); |
a687059c |
1731 | return sp; |
1732 | } |
1733 | |
1734 | if (which == O_GNBYNAME) { |
1735 | char *name = str_get(ary->ary_array[sp+1]); |
1736 | |
1737 | nent = getnetbyname(name); |
1738 | } |
1739 | else if (which == O_GNBYADDR) { |
fe14fcc3 |
1740 | unsigned long addr = U_L(str_gnum(ary->ary_array[sp+1])); |
a687059c |
1741 | int addrtype = (int)str_gnum(ary->ary_array[sp+2]); |
a687059c |
1742 | |
fe14fcc3 |
1743 | nent = getnetbyaddr((long)addr,addrtype); |
a687059c |
1744 | } |
1745 | else |
1746 | nent = getnetent(); |
1747 | |
1748 | if (nent) { |
1749 | #ifndef lint |
fe14fcc3 |
1750 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
1751 | str_set(str, nent->n_name); |
fe14fcc3 |
1752 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
1753 | for (elem = nent->n_aliases; *elem; elem++) { |
1754 | str_cat(str, *elem); |
1755 | if (elem[1]) |
1756 | str_ncat(str," ",1); |
1757 | } |
fe14fcc3 |
1758 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
1759 | str_numset(str, (double)nent->n_addrtype); |
fe14fcc3 |
1760 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
1761 | str_numset(str, (double)nent->n_net); |
1762 | #else /* lint */ |
1763 | elem = Nullch; |
1764 | elem = elem; |
fe14fcc3 |
1765 | (void)astore(ary, ++sp, str_mortal(&str_no)); |
a687059c |
1766 | #endif /* lint */ |
1767 | } |
1768 | |
1769 | return sp; |
1770 | } |
1771 | |
1772 | int |
1773 | do_gpent(which,gimme,arglast) |
1774 | int which; |
1775 | int gimme; |
1776 | int *arglast; |
1777 | { |
1778 | register ARRAY *ary = stack; |
1779 | register int sp = arglast[0]; |
1780 | register char **elem; |
1781 | register STR *str; |
1782 | struct protoent *getprotobyname(); |
1783 | struct protoent *getprotobynumber(); |
1784 | struct protoent *getprotoent(); |
1785 | struct protoent *pent; |
1786 | |
1787 | if (gimme != G_ARRAY) { |
fe14fcc3 |
1788 | astore(ary, ++sp, str_mortal(&str_undef)); |
a687059c |
1789 | return sp; |
1790 | } |
1791 | |
1792 | if (which == O_GPBYNAME) { |
1793 | char *name = str_get(ary->ary_array[sp+1]); |
1794 | |
1795 | pent = getprotobyname(name); |
1796 | } |
1797 | else if (which == O_GPBYNUMBER) { |
1798 | int proto = (int)str_gnum(ary->ary_array[sp+1]); |
1799 | |
1800 | pent = getprotobynumber(proto); |
1801 | } |
1802 | else |
1803 | pent = getprotoent(); |
1804 | |
1805 | if (pent) { |
1806 | #ifndef lint |
fe14fcc3 |
1807 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
1808 | str_set(str, pent->p_name); |
fe14fcc3 |
1809 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
1810 | for (elem = pent->p_aliases; *elem; elem++) { |
1811 | str_cat(str, *elem); |
1812 | if (elem[1]) |
1813 | str_ncat(str," ",1); |
1814 | } |
fe14fcc3 |
1815 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
1816 | str_numset(str, (double)pent->p_proto); |
1817 | #else /* lint */ |
1818 | elem = Nullch; |
1819 | elem = elem; |
fe14fcc3 |
1820 | (void)astore(ary, ++sp, str_mortal(&str_no)); |
a687059c |
1821 | #endif /* lint */ |
1822 | } |
1823 | |
1824 | return sp; |
1825 | } |
1826 | |
1827 | int |
1828 | do_gsent(which,gimme,arglast) |
1829 | int which; |
1830 | int gimme; |
1831 | int *arglast; |
1832 | { |
1833 | register ARRAY *ary = stack; |
1834 | register int sp = arglast[0]; |
1835 | register char **elem; |
1836 | register STR *str; |
1837 | struct servent *getservbyname(); |
1838 | struct servent *getservbynumber(); |
1839 | struct servent *getservent(); |
1840 | struct servent *sent; |
1841 | |
1842 | if (gimme != G_ARRAY) { |
fe14fcc3 |
1843 | astore(ary, ++sp, str_mortal(&str_undef)); |
a687059c |
1844 | return sp; |
1845 | } |
1846 | |
1847 | if (which == O_GSBYNAME) { |
1848 | char *name = str_get(ary->ary_array[sp+1]); |
1849 | char *proto = str_get(ary->ary_array[sp+2]); |
1850 | |
1851 | if (proto && !*proto) |
1852 | proto = Nullch; |
1853 | |
1854 | sent = getservbyname(name,proto); |
1855 | } |
1856 | else if (which == O_GSBYPORT) { |
1857 | int port = (int)str_gnum(ary->ary_array[sp+1]); |
1858 | char *proto = str_get(ary->ary_array[sp+2]); |
1859 | |
1860 | sent = getservbyport(port,proto); |
1861 | } |
1862 | else |
1863 | sent = getservent(); |
1864 | if (sent) { |
1865 | #ifndef lint |
fe14fcc3 |
1866 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
1867 | str_set(str, sent->s_name); |
fe14fcc3 |
1868 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
1869 | for (elem = sent->s_aliases; *elem; elem++) { |
1870 | str_cat(str, *elem); |
1871 | if (elem[1]) |
1872 | str_ncat(str," ",1); |
1873 | } |
fe14fcc3 |
1874 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
1875 | #ifdef HAS_NTOHS |
a687059c |
1876 | str_numset(str, (double)ntohs(sent->s_port)); |
1877 | #else |
1878 | str_numset(str, (double)(sent->s_port)); |
1879 | #endif |
fe14fcc3 |
1880 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
1881 | str_set(str, sent->s_proto); |
1882 | #else /* lint */ |
1883 | elem = Nullch; |
1884 | elem = elem; |
fe14fcc3 |
1885 | (void)astore(ary, ++sp, str_mortal(&str_no)); |
a687059c |
1886 | #endif /* lint */ |
1887 | } |
1888 | |
1889 | return sp; |
1890 | } |
1891 | |
fe14fcc3 |
1892 | #endif /* HAS_SOCKET */ |
ff8e2863 |
1893 | |
fe14fcc3 |
1894 | #ifdef HAS_SELECT |
a687059c |
1895 | int |
1896 | do_select(gimme,arglast) |
1897 | int gimme; |
1898 | int *arglast; |
1899 | { |
1900 | register STR **st = stack->ary_array; |
1901 | register int sp = arglast[0]; |
1902 | register int i; |
1903 | register int j; |
1904 | register char *s; |
1905 | register STR *str; |
1906 | double value; |
1907 | int maxlen = 0; |
1908 | int nfound; |
1909 | struct timeval timebuf; |
1910 | struct timeval *tbuf = &timebuf; |
663a0e37 |
1911 | int growsize; |
1912 | #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678 |
1913 | int masksize; |
1914 | int offset; |
1915 | char *fd_sets[4]; |
1916 | int k; |
1917 | |
1918 | #if BYTEORDER & 0xf0000 |
1919 | #define ORDERBYTE (0x88888888 - BYTEORDER) |
1920 | #else |
1921 | #define ORDERBYTE (0x4444 - BYTEORDER) |
1922 | #endif |
1923 | |
1924 | #endif |
a687059c |
1925 | |
1926 | for (i = 1; i <= 3; i++) { |
663a0e37 |
1927 | j = st[sp+i]->str_cur; |
a687059c |
1928 | if (maxlen < j) |
1929 | maxlen = j; |
1930 | } |
663a0e37 |
1931 | |
1932 | #if BYTEORDER == 0x1234 || BYTEORDER == 0x12345678 |
1933 | growsize = maxlen; /* little endians can use vecs directly */ |
1934 | #else |
1935 | #ifdef NFDBITS |
1936 | |
1937 | #ifndef NBBY |
1938 | #define NBBY 8 |
1939 | #endif |
1940 | |
1941 | masksize = NFDBITS / NBBY; |
1942 | #else |
1943 | masksize = sizeof(long); /* documented int, everyone seems to use long */ |
1944 | #endif |
1945 | growsize = maxlen + (masksize - (maxlen % masksize)); |
1946 | Zero(&fd_sets[0], 4, char*); |
1947 | #endif |
1948 | |
a687059c |
1949 | for (i = 1; i <= 3; i++) { |
1950 | str = st[sp+i]; |
1951 | j = str->str_len; |
663a0e37 |
1952 | if (j < growsize) { |
a687059c |
1953 | if (str->str_pok) { |
ff8e2863 |
1954 | Str_Grow(str,growsize); |
a687059c |
1955 | s = str_get(str) + j; |
663a0e37 |
1956 | while (++j <= growsize) { |
a687059c |
1957 | *s++ = '\0'; |
1958 | } |
1959 | } |
1960 | else if (str->str_ptr) { |
1961 | Safefree(str->str_ptr); |
1962 | str->str_ptr = Nullch; |
1963 | } |
1964 | } |
663a0e37 |
1965 | #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678 |
1966 | s = str->str_ptr; |
1967 | if (s) { |
1968 | New(403, fd_sets[i], growsize, char); |
1969 | for (offset = 0; offset < growsize; offset += masksize) { |
1970 | for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4)) |
1971 | fd_sets[i][j+offset] = s[(k % masksize) + offset]; |
1972 | } |
1973 | } |
1974 | #endif |
a687059c |
1975 | } |
1976 | str = st[sp+4]; |
1977 | if (str->str_nok || str->str_pok) { |
1978 | value = str_gnum(str); |
1979 | if (value < 0.0) |
1980 | value = 0.0; |
1981 | timebuf.tv_sec = (long)value; |
1982 | value -= (double)timebuf.tv_sec; |
1983 | timebuf.tv_usec = (long)(value * 1000000.0); |
1984 | } |
1985 | else |
1986 | tbuf = Null(struct timeval*); |
1987 | |
663a0e37 |
1988 | #if BYTEORDER == 0x1234 || BYTEORDER == 0x12345678 |
a687059c |
1989 | nfound = select( |
1990 | maxlen * 8, |
1991 | st[sp+1]->str_ptr, |
1992 | st[sp+2]->str_ptr, |
1993 | st[sp+3]->str_ptr, |
1994 | tbuf); |
663a0e37 |
1995 | #else |
1996 | nfound = select( |
1997 | maxlen * 8, |
1998 | fd_sets[1], |
1999 | fd_sets[2], |
2000 | fd_sets[3], |
2001 | tbuf); |
2002 | for (i = 1; i <= 3; i++) { |
2003 | if (fd_sets[i]) { |
2004 | str = st[sp+i]; |
2005 | s = str->str_ptr; |
2006 | for (offset = 0; offset < growsize; offset += masksize) { |
2007 | for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4)) |
2008 | s[(k % masksize) + offset] = fd_sets[i][j+offset]; |
2009 | } |
2010 | } |
2011 | } |
2012 | #endif |
a687059c |
2013 | |
fe14fcc3 |
2014 | st[++sp] = str_mortal(&str_no); |
a687059c |
2015 | str_numset(st[sp], (double)nfound); |
2016 | if (gimme == G_ARRAY && tbuf) { |
2017 | value = (double)(timebuf.tv_sec) + |
2018 | (double)(timebuf.tv_usec) / 1000000.0; |
fe14fcc3 |
2019 | st[++sp] = str_mortal(&str_no); |
a687059c |
2020 | str_numset(st[sp], value); |
2021 | } |
2022 | return sp; |
2023 | } |
ff8e2863 |
2024 | #endif /* SELECT */ |
a687059c |
2025 | |
fe14fcc3 |
2026 | #ifdef HAS_SOCKET |
a687059c |
2027 | int |
2028 | do_spair(stab1, stab2, arglast) |
2029 | STAB *stab1; |
2030 | STAB *stab2; |
2031 | int *arglast; |
2032 | { |
2033 | register STR **st = stack->ary_array; |
2034 | register int sp = arglast[2]; |
2035 | register STIO *stio1; |
2036 | register STIO *stio2; |
2037 | int domain, type, protocol, fd[2]; |
2038 | |
2039 | if (!stab1 || !stab2) |
2040 | return FALSE; |
2041 | |
2042 | stio1 = stab_io(stab1); |
2043 | stio2 = stab_io(stab2); |
2044 | if (!stio1) |
2045 | stio1 = stab_io(stab1) = stio_new(); |
2046 | else if (stio1->ifp) |
2047 | do_close(stab1,FALSE); |
2048 | if (!stio2) |
2049 | stio2 = stab_io(stab2) = stio_new(); |
2050 | else if (stio2->ifp) |
2051 | do_close(stab2,FALSE); |
2052 | |
2053 | domain = (int)str_gnum(st[++sp]); |
2054 | type = (int)str_gnum(st[++sp]); |
2055 | protocol = (int)str_gnum(st[++sp]); |
2056 | #ifdef TAINT |
2057 | taintproper("Insecure dependency in socketpair"); |
2058 | #endif |
fe14fcc3 |
2059 | #ifdef HAS_SOCKETPAIR |
a687059c |
2060 | if (socketpair(domain,type,protocol,fd) < 0) |
2061 | return FALSE; |
2062 | #else |
2063 | fatal("Socketpair unimplemented"); |
2064 | #endif |
2065 | stio1->ifp = fdopen(fd[0], "r"); |
2066 | stio1->ofp = fdopen(fd[0], "w"); |
2067 | stio1->type = 's'; |
2068 | stio2->ifp = fdopen(fd[1], "r"); |
2069 | stio2->ofp = fdopen(fd[1], "w"); |
2070 | stio2->type = 's'; |
fe14fcc3 |
2071 | if (!stio1->ifp || !stio1->ofp || !stio2->ifp || !stio2->ofp) { |
2072 | if (stio1->ifp) fclose(stio1->ifp); |
2073 | if (stio1->ofp) fclose(stio1->ofp); |
2074 | if (!stio1->ifp && !stio1->ofp) close(fd[0]); |
2075 | if (stio2->ifp) fclose(stio2->ifp); |
2076 | if (stio2->ofp) fclose(stio2->ofp); |
2077 | if (!stio2->ifp && !stio2->ofp) close(fd[1]); |
2078 | return FALSE; |
2079 | } |
a687059c |
2080 | |
2081 | return TRUE; |
2082 | } |
2083 | |
fe14fcc3 |
2084 | #endif /* HAS_SOCKET */ |
a687059c |
2085 | |
2086 | int |
2087 | do_gpwent(which,gimme,arglast) |
2088 | int which; |
2089 | int gimme; |
2090 | int *arglast; |
2091 | { |
2092 | #ifdef I_PWD |
2093 | register ARRAY *ary = stack; |
2094 | register int sp = arglast[0]; |
a687059c |
2095 | register STR *str; |
2096 | struct passwd *getpwnam(); |
2097 | struct passwd *getpwuid(); |
2098 | struct passwd *getpwent(); |
2099 | struct passwd *pwent; |
a687059c |
2100 | |
2101 | if (gimme != G_ARRAY) { |
fe14fcc3 |
2102 | astore(ary, ++sp, str_mortal(&str_undef)); |
a687059c |
2103 | return sp; |
2104 | } |
2105 | |
2106 | if (which == O_GPWNAM) { |
2107 | char *name = str_get(ary->ary_array[sp+1]); |
2108 | |
2109 | pwent = getpwnam(name); |
2110 | } |
2111 | else if (which == O_GPWUID) { |
2112 | int uid = (int)str_gnum(ary->ary_array[sp+1]); |
2113 | |
2114 | pwent = getpwuid(uid); |
2115 | } |
2116 | else |
2117 | pwent = getpwent(); |
2118 | |
2119 | if (pwent) { |
fe14fcc3 |
2120 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
2121 | str_set(str, pwent->pw_name); |
fe14fcc3 |
2122 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
2123 | str_set(str, pwent->pw_passwd); |
fe14fcc3 |
2124 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
2125 | str_numset(str, (double)pwent->pw_uid); |
fe14fcc3 |
2126 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
2127 | str_numset(str, (double)pwent->pw_gid); |
fe14fcc3 |
2128 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
03a14243 |
2129 | #ifdef PWCHANGE |
2130 | str_numset(str, (double)pwent->pw_change); |
2131 | #else |
a687059c |
2132 | #ifdef PWQUOTA |
2133 | str_numset(str, (double)pwent->pw_quota); |
2134 | #else |
2135 | #ifdef PWAGE |
2136 | str_set(str, pwent->pw_age); |
2137 | #endif |
2138 | #endif |
03a14243 |
2139 | #endif |
fe14fcc3 |
2140 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
03a14243 |
2141 | #ifdef PWCLASS |
2142 | str_set(str,pwent->pw_class); |
2143 | #else |
c2ab57d4 |
2144 | #ifdef PWCOMMENT |
a687059c |
2145 | str_set(str, pwent->pw_comment); |
03a14243 |
2146 | #endif |
c2ab57d4 |
2147 | #endif |
fe14fcc3 |
2148 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
2149 | str_set(str, pwent->pw_gecos); |
fe14fcc3 |
2150 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
2151 | str_set(str, pwent->pw_dir); |
fe14fcc3 |
2152 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
2153 | str_set(str, pwent->pw_shell); |
03a14243 |
2154 | #ifdef PWEXPIRE |
fe14fcc3 |
2155 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
03a14243 |
2156 | str_numset(str, (double)pwent->pw_expire); |
2157 | #endif |
a687059c |
2158 | } |
2159 | |
2160 | return sp; |
2161 | #else |
2162 | fatal("password routines not implemented"); |
2163 | #endif |
2164 | } |
2165 | |
2166 | int |
2167 | do_ggrent(which,gimme,arglast) |
2168 | int which; |
2169 | int gimme; |
2170 | int *arglast; |
2171 | { |
2172 | #ifdef I_GRP |
2173 | register ARRAY *ary = stack; |
2174 | register int sp = arglast[0]; |
2175 | register char **elem; |
2176 | register STR *str; |
2177 | struct group *getgrnam(); |
2178 | struct group *getgrgid(); |
2179 | struct group *getgrent(); |
2180 | struct group *grent; |
a687059c |
2181 | |
2182 | if (gimme != G_ARRAY) { |
fe14fcc3 |
2183 | astore(ary, ++sp, str_mortal(&str_undef)); |
a687059c |
2184 | return sp; |
2185 | } |
2186 | |
2187 | if (which == O_GGRNAM) { |
2188 | char *name = str_get(ary->ary_array[sp+1]); |
2189 | |
2190 | grent = getgrnam(name); |
2191 | } |
2192 | else if (which == O_GGRGID) { |
2193 | int gid = (int)str_gnum(ary->ary_array[sp+1]); |
2194 | |
2195 | grent = getgrgid(gid); |
2196 | } |
2197 | else |
2198 | grent = getgrent(); |
2199 | |
2200 | if (grent) { |
fe14fcc3 |
2201 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
2202 | str_set(str, grent->gr_name); |
fe14fcc3 |
2203 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
2204 | str_set(str, grent->gr_passwd); |
fe14fcc3 |
2205 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
2206 | str_numset(str, (double)grent->gr_gid); |
fe14fcc3 |
2207 | (void)astore(ary, ++sp, str = str_mortal(&str_no)); |
a687059c |
2208 | for (elem = grent->gr_mem; *elem; elem++) { |
2209 | str_cat(str, *elem); |
2210 | if (elem[1]) |
2211 | str_ncat(str," ",1); |
2212 | } |
2213 | } |
2214 | |
2215 | return sp; |
2216 | #else |
2217 | fatal("group routines not implemented"); |
2218 | #endif |
2219 | } |
2220 | |
2221 | int |
2222 | do_dirop(optype,stab,gimme,arglast) |
2223 | int optype; |
2224 | STAB *stab; |
2225 | int gimme; |
2226 | int *arglast; |
2227 | { |
fe14fcc3 |
2228 | #if defined(DIRENT) && defined(HAS_READDIR) |
a687059c |
2229 | register ARRAY *ary = stack; |
2230 | register STR **st = ary->ary_array; |
2231 | register int sp = arglast[1]; |
2232 | register STIO *stio; |
2233 | long along; |
bf38876a |
2234 | #ifndef telldir |
a687059c |
2235 | long telldir(); |
bf38876a |
2236 | #endif |
6e21c824 |
2237 | #ifndef apollo |
a687059c |
2238 | struct DIRENT *readdir(); |
6e21c824 |
2239 | #endif |
a687059c |
2240 | register struct DIRENT *dp; |
2241 | |
2242 | if (!stab) |
2243 | goto nope; |
2244 | if (!(stio = stab_io(stab))) |
2245 | stio = stab_io(stab) = stio_new(); |
6e21c824 |
2246 | if (!stio->dirp && optype != O_OPEN_DIR) |
a687059c |
2247 | goto nope; |
2248 | st[sp] = &str_yes; |
2249 | switch (optype) { |
6e21c824 |
2250 | case O_OPEN_DIR: |
a687059c |
2251 | if (stio->dirp) |
2252 | closedir(stio->dirp); |
2253 | if (!(stio->dirp = opendir(str_get(st[sp+1])))) |
2254 | goto nope; |
2255 | break; |
2256 | case O_READDIR: |
2257 | if (gimme == G_ARRAY) { |
2258 | --sp; |
99b89507 |
2259 | /*SUPPRESS 560*/ |
a687059c |
2260 | while (dp = readdir(stio->dirp)) { |
2261 | #ifdef DIRNAMLEN |
2262 | (void)astore(ary,++sp, |
fe14fcc3 |
2263 | str_2mortal(str_make(dp->d_name,dp->d_namlen))); |
a687059c |
2264 | #else |
2265 | (void)astore(ary,++sp, |
fe14fcc3 |
2266 | str_2mortal(str_make(dp->d_name,0))); |
a687059c |
2267 | #endif |
2268 | } |
2269 | } |
2270 | else { |
2271 | if (!(dp = readdir(stio->dirp))) |
2272 | goto nope; |
fe14fcc3 |
2273 | st[sp] = str_mortal(&str_undef); |
a687059c |
2274 | #ifdef DIRNAMLEN |
2275 | str_nset(st[sp], dp->d_name, dp->d_namlen); |
2276 | #else |
2277 | str_set(st[sp], dp->d_name); |
2278 | #endif |
2279 | } |
2280 | break; |
ff8e2863 |
2281 | #if MACH |
2282 | case O_TELLDIR: |
2283 | case O_SEEKDIR: |
2284 | goto nope; |
2285 | #else |
a687059c |
2286 | case O_TELLDIR: |
fe14fcc3 |
2287 | st[sp] = str_mortal(&str_undef); |
a687059c |
2288 | str_numset(st[sp], (double)telldir(stio->dirp)); |
2289 | break; |
2290 | case O_SEEKDIR: |
fe14fcc3 |
2291 | st[sp] = str_mortal(&str_undef); |
a687059c |
2292 | along = (long)str_gnum(st[sp+1]); |
2293 | (void)seekdir(stio->dirp,along); |
2294 | break; |
ff8e2863 |
2295 | #endif |
a687059c |
2296 | case O_REWINDDIR: |
fe14fcc3 |
2297 | st[sp] = str_mortal(&str_undef); |
a687059c |
2298 | (void)rewinddir(stio->dirp); |
2299 | break; |
2300 | case O_CLOSEDIR: |
fe14fcc3 |
2301 | st[sp] = str_mortal(&str_undef); |
a687059c |
2302 | (void)closedir(stio->dirp); |
2303 | stio->dirp = 0; |
2304 | break; |
2305 | } |
2306 | return sp; |
2307 | |
2308 | nope: |
2309 | st[sp] = &str_undef; |
99b89507 |
2310 | if (!errno) |
2311 | errno = EBADF; |
a687059c |
2312 | return sp; |
2313 | |
2314 | #else |
2315 | fatal("Unimplemented directory operation"); |
2316 | #endif |
2317 | } |
2318 | |
2319 | apply(type,arglast) |
2320 | int type; |
2321 | int *arglast; |
2322 | { |
2323 | register STR **st = stack->ary_array; |
2324 | register int sp = arglast[1]; |
2325 | register int items = arglast[2] - sp; |
2326 | register int val; |
2327 | register int val2; |
2328 | register int tot = 0; |
2329 | char *s; |
2330 | |
2331 | #ifdef TAINT |
2332 | for (st += ++sp; items--; st++) |
2333 | tainted |= (*st)->str_tainted; |
2334 | st = stack->ary_array; |
2335 | sp = arglast[1]; |
2336 | items = arglast[2] - sp; |
2337 | #endif |
2338 | switch (type) { |
2339 | case O_CHMOD: |
2340 | #ifdef TAINT |
2341 | taintproper("Insecure dependency in chmod"); |
2342 | #endif |
2343 | if (--items > 0) { |
2344 | tot = items; |
2345 | val = (int)str_gnum(st[++sp]); |
2346 | while (items--) { |
2347 | if (chmod(str_get(st[++sp]),val)) |
2348 | tot--; |
2349 | } |
2350 | } |
2351 | break; |
fe14fcc3 |
2352 | #ifdef HAS_CHOWN |
a687059c |
2353 | case O_CHOWN: |
2354 | #ifdef TAINT |
2355 | taintproper("Insecure dependency in chown"); |
2356 | #endif |
2357 | if (items > 2) { |
2358 | items -= 2; |
2359 | tot = items; |
2360 | val = (int)str_gnum(st[++sp]); |
2361 | val2 = (int)str_gnum(st[++sp]); |
2362 | while (items--) { |
2363 | if (chown(str_get(st[++sp]),val,val2)) |
2364 | tot--; |
2365 | } |
2366 | } |
2367 | break; |
b1248f16 |
2368 | #endif |
fe14fcc3 |
2369 | #ifdef HAS_KILL |
a687059c |
2370 | case O_KILL: |
2371 | #ifdef TAINT |
2372 | taintproper("Insecure dependency in kill"); |
2373 | #endif |
2374 | if (--items > 0) { |
2375 | tot = items; |
2376 | s = str_get(st[++sp]); |
99b89507 |
2377 | if (isUPPER(*s)) { |
a687059c |
2378 | if (*s == 'S' && s[1] == 'I' && s[2] == 'G') |
2379 | s += 3; |
2380 | if (!(val = whichsig(s))) |
2381 | fatal("Unrecognized signal name \"%s\"",s); |
2382 | } |
2383 | else |
2384 | val = (int)str_gnum(st[sp]); |
2385 | if (val < 0) { |
2386 | val = -val; |
2387 | while (items--) { |
2388 | int proc = (int)str_gnum(st[++sp]); |
fe14fcc3 |
2389 | #ifdef HAS_KILLPG |
a687059c |
2390 | if (killpg(proc,val)) /* BSD */ |
2391 | #else |
2392 | if (kill(-proc,val)) /* SYSV */ |
2393 | #endif |
2394 | tot--; |
2395 | } |
2396 | } |
2397 | else { |
2398 | while (items--) { |
2399 | if (kill((int)(str_gnum(st[++sp])),val)) |
2400 | tot--; |
2401 | } |
2402 | } |
2403 | } |
2404 | break; |
b1248f16 |
2405 | #endif |
a687059c |
2406 | case O_UNLINK: |
2407 | #ifdef TAINT |
2408 | taintproper("Insecure dependency in unlink"); |
2409 | #endif |
2410 | tot = items; |
2411 | while (items--) { |
2412 | s = str_get(st[++sp]); |
2413 | if (euid || unsafe) { |
2414 | if (UNLINK(s)) |
2415 | tot--; |
2416 | } |
2417 | else { /* don't let root wipe out directories without -U */ |
fe14fcc3 |
2418 | #ifdef HAS_LSTAT |
c623bd54 |
2419 | if (lstat(s,&statbuf) < 0 || S_ISDIR(statbuf.st_mode)) |
a687059c |
2420 | #else |
c623bd54 |
2421 | if (stat(s,&statbuf) < 0 || S_ISDIR(statbuf.st_mode)) |
a687059c |
2422 | #endif |
a687059c |
2423 | tot--; |
2424 | else { |
2425 | if (UNLINK(s)) |
2426 | tot--; |
2427 | } |
2428 | } |
2429 | } |
2430 | break; |
2431 | case O_UTIME: |
2432 | #ifdef TAINT |
2433 | taintproper("Insecure dependency in utime"); |
2434 | #endif |
2435 | if (items > 2) { |
663a0e37 |
2436 | #ifdef I_UTIME |
2437 | struct utimbuf utbuf; |
2438 | #else |
a687059c |
2439 | struct { |
663a0e37 |
2440 | long actime; |
2441 | long modtime; |
a687059c |
2442 | } utbuf; |
663a0e37 |
2443 | #endif |
a687059c |
2444 | |
afd9f252 |
2445 | Zero(&utbuf, sizeof utbuf, char); |
663a0e37 |
2446 | utbuf.actime = (long)str_gnum(st[++sp]); /* time accessed */ |
2447 | utbuf.modtime = (long)str_gnum(st[++sp]); /* time modified */ |
a687059c |
2448 | items -= 2; |
2449 | #ifndef lint |
2450 | tot = items; |
2451 | while (items--) { |
2452 | if (utime(str_get(st[++sp]),&utbuf)) |
2453 | tot--; |
2454 | } |
2455 | #endif |
2456 | } |
2457 | else |
2458 | items = 0; |
2459 | break; |
2460 | } |
2461 | return tot; |
2462 | } |
2463 | |
2464 | /* Do the permissions allow some operation? Assumes statcache already set. */ |
2465 | |
2466 | int |
2467 | cando(bit, effective, statbufp) |
2468 | int bit; |
2469 | int effective; |
2470 | register struct stat *statbufp; |
2471 | { |
fe14fcc3 |
2472 | #ifdef MSDOS |
2473 | /* [Comments and code from Len Reed] |
2474 | * MS-DOS "user" is similar to UNIX's "superuser," but can't write |
2475 | * to write-protected files. The execute permission bit is set |
2476 | * by the Miscrosoft C library stat() function for the following: |
2477 | * .exe files |
2478 | * .com files |
2479 | * .bat files |
2480 | * directories |
2481 | * All files and directories are readable. |
2482 | * Directories and special files, e.g. "CON", cannot be |
2483 | * write-protected. |
2484 | * [Comment by Tom Dinger -- a directory can have the write-protect |
2485 | * bit set in the file system, but DOS permits changes to |
2486 | * the directory anyway. In addition, all bets are off |
2487 | * here for networked software, such as Novell and |
2488 | * Sun's PC-NFS.] |
2489 | */ |
2490 | |
2491 | return (bit & statbufp->st_mode) ? TRUE : FALSE; |
2492 | |
2493 | #else /* ! MSDOS */ |
a687059c |
2494 | if ((effective ? euid : uid) == 0) { /* root is special */ |
c623bd54 |
2495 | if (bit == S_IXUSR) { |
2496 | if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode)) |
a687059c |
2497 | return TRUE; |
2498 | } |
2499 | else |
2500 | return TRUE; /* root reads and writes anything */ |
2501 | return FALSE; |
2502 | } |
2503 | if (statbufp->st_uid == (effective ? euid : uid) ) { |
2504 | if (statbufp->st_mode & bit) |
2505 | return TRUE; /* ok as "user" */ |
2506 | } |
2507 | else if (ingroup((int)statbufp->st_gid,effective)) { |
2508 | if (statbufp->st_mode & bit >> 3) |
2509 | return TRUE; /* ok as "group" */ |
2510 | } |
2511 | else if (statbufp->st_mode & bit >> 6) |
2512 | return TRUE; /* ok as "other" */ |
2513 | return FALSE; |
fe14fcc3 |
2514 | #endif /* ! MSDOS */ |
a687059c |
2515 | } |
2516 | |
2517 | int |
2518 | ingroup(testgid,effective) |
2519 | int testgid; |
2520 | int effective; |
2521 | { |
2522 | if (testgid == (effective ? egid : gid)) |
2523 | return TRUE; |
fe14fcc3 |
2524 | #ifdef HAS_GETGROUPS |
a687059c |
2525 | #ifndef NGROUPS |
2526 | #define NGROUPS 32 |
2527 | #endif |
2528 | { |
1c3d792e |
2529 | GROUPSTYPE gary[NGROUPS]; |
a687059c |
2530 | int anum; |
2531 | |
2532 | anum = getgroups(NGROUPS,gary); |
2533 | while (--anum >= 0) |
2534 | if (gary[anum] == testgid) |
2535 | return TRUE; |
2536 | } |
2537 | #endif |
2538 | return FALSE; |
2539 | } |
c2ab57d4 |
2540 | |
fe14fcc3 |
2541 | #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM) |
c2ab57d4 |
2542 | |
2543 | int |
2544 | do_ipcget(optype, arglast) |
2545 | int optype; |
2546 | int *arglast; |
2547 | { |
2548 | register STR **st = stack->ary_array; |
2549 | register int sp = arglast[0]; |
2550 | key_t key; |
2551 | int n, flags; |
2552 | |
2553 | key = (key_t)str_gnum(st[++sp]); |
2554 | n = (optype == O_MSGGET) ? 0 : (int)str_gnum(st[++sp]); |
2555 | flags = (int)str_gnum(st[++sp]); |
2556 | errno = 0; |
2557 | switch (optype) |
2558 | { |
fe14fcc3 |
2559 | #ifdef HAS_MSG |
c2ab57d4 |
2560 | case O_MSGGET: |
2561 | return msgget(key, flags); |
e5d73d77 |
2562 | #endif |
fe14fcc3 |
2563 | #ifdef HAS_SEM |
c2ab57d4 |
2564 | case O_SEMGET: |
2565 | return semget(key, n, flags); |
e5d73d77 |
2566 | #endif |
fe14fcc3 |
2567 | #ifdef HAS_SHM |
c2ab57d4 |
2568 | case O_SHMGET: |
2569 | return shmget(key, n, flags); |
e5d73d77 |
2570 | #endif |
fe14fcc3 |
2571 | #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM) |
e5d73d77 |
2572 | default: |
2573 | fatal("%s not implemented", opname[optype]); |
2574 | #endif |
c2ab57d4 |
2575 | } |
2576 | return -1; /* should never happen */ |
2577 | } |
2578 | |
2579 | int |
2580 | do_ipcctl(optype, arglast) |
2581 | int optype; |
2582 | int *arglast; |
2583 | { |
2584 | register STR **st = stack->ary_array; |
2585 | register int sp = arglast[0]; |
2586 | STR *astr; |
2587 | char *a; |
2588 | int id, n, cmd, infosize, getinfo, ret; |
2589 | |
2590 | id = (int)str_gnum(st[++sp]); |
2591 | n = (optype == O_SEMCTL) ? (int)str_gnum(st[++sp]) : 0; |
2592 | cmd = (int)str_gnum(st[++sp]); |
2593 | astr = st[++sp]; |
2594 | |
2595 | infosize = 0; |
2596 | getinfo = (cmd == IPC_STAT); |
2597 | |
2598 | switch (optype) |
2599 | { |
fe14fcc3 |
2600 | #ifdef HAS_MSG |
c2ab57d4 |
2601 | case O_MSGCTL: |
2602 | if (cmd == IPC_STAT || cmd == IPC_SET) |
2603 | infosize = sizeof(struct msqid_ds); |
2604 | break; |
e5d73d77 |
2605 | #endif |
fe14fcc3 |
2606 | #ifdef HAS_SHM |
c2ab57d4 |
2607 | case O_SHMCTL: |
2608 | if (cmd == IPC_STAT || cmd == IPC_SET) |
2609 | infosize = sizeof(struct shmid_ds); |
2610 | break; |
e5d73d77 |
2611 | #endif |
fe14fcc3 |
2612 | #ifdef HAS_SEM |
c2ab57d4 |
2613 | case O_SEMCTL: |
2614 | if (cmd == IPC_STAT || cmd == IPC_SET) |
2615 | infosize = sizeof(struct semid_ds); |
2616 | else if (cmd == GETALL || cmd == SETALL) |
2617 | { |
2618 | struct semid_ds semds; |
2619 | if (semctl(id, 0, IPC_STAT, &semds) == -1) |
2620 | return -1; |
2621 | getinfo = (cmd == GETALL); |
6e21c824 |
2622 | infosize = semds.sem_nsems * sizeof(short); |
2623 | /* "short" is technically wrong but much more portable |
2624 | than guessing about u_?short(_t)? */ |
c2ab57d4 |
2625 | } |
2626 | break; |
e5d73d77 |
2627 | #endif |
fe14fcc3 |
2628 | #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM) |
e5d73d77 |
2629 | default: |
2630 | fatal("%s not implemented", opname[optype]); |
2631 | #endif |
c2ab57d4 |
2632 | } |
2633 | |
2634 | if (infosize) |
2635 | { |
2636 | if (getinfo) |
2637 | { |
2638 | STR_GROW(astr, infosize+1); |
2639 | a = str_get(astr); |
2640 | } |
2641 | else |
2642 | { |
2643 | a = str_get(astr); |
2644 | if (astr->str_cur != infosize) |
2645 | { |
2646 | errno = EINVAL; |
2647 | return -1; |
2648 | } |
2649 | } |
2650 | } |
2651 | else |
2652 | { |
2653 | int i = (int)str_gnum(astr); |
2654 | a = (char *)i; /* ouch */ |
2655 | } |
2656 | errno = 0; |
2657 | switch (optype) |
2658 | { |
fe14fcc3 |
2659 | #ifdef HAS_MSG |
c2ab57d4 |
2660 | case O_MSGCTL: |
2661 | ret = msgctl(id, cmd, a); |
2662 | break; |
e5d73d77 |
2663 | #endif |
fe14fcc3 |
2664 | #ifdef HAS_SEM |
c2ab57d4 |
2665 | case O_SEMCTL: |
2666 | ret = semctl(id, n, cmd, a); |
2667 | break; |
e5d73d77 |
2668 | #endif |
fe14fcc3 |
2669 | #ifdef HAS_SHM |
c2ab57d4 |
2670 | case O_SHMCTL: |
2671 | ret = shmctl(id, cmd, a); |
2672 | break; |
e5d73d77 |
2673 | #endif |
c2ab57d4 |
2674 | } |
2675 | if (getinfo && ret >= 0) { |
2676 | astr->str_cur = infosize; |
2677 | astr->str_ptr[infosize] = '\0'; |
2678 | } |
2679 | return ret; |
2680 | } |
2681 | |
2682 | int |
2683 | do_msgsnd(arglast) |
2684 | int *arglast; |
2685 | { |
fe14fcc3 |
2686 | #ifdef HAS_MSG |
c2ab57d4 |
2687 | register STR **st = stack->ary_array; |
2688 | register int sp = arglast[0]; |
2689 | STR *mstr; |
2690 | char *mbuf; |
2691 | int id, msize, flags; |
2692 | |
2693 | id = (int)str_gnum(st[++sp]); |
2694 | mstr = st[++sp]; |
2695 | flags = (int)str_gnum(st[++sp]); |
2696 | mbuf = str_get(mstr); |
2697 | if ((msize = mstr->str_cur - sizeof(long)) < 0) { |
2698 | errno = EINVAL; |
2699 | return -1; |
2700 | } |
2701 | errno = 0; |
2702 | return msgsnd(id, mbuf, msize, flags); |
e5d73d77 |
2703 | #else |
2704 | fatal("msgsnd not implemented"); |
2705 | #endif |
c2ab57d4 |
2706 | } |
2707 | |
2708 | int |
2709 | do_msgrcv(arglast) |
2710 | int *arglast; |
2711 | { |
fe14fcc3 |
2712 | #ifdef HAS_MSG |
c2ab57d4 |
2713 | register STR **st = stack->ary_array; |
2714 | register int sp = arglast[0]; |
2715 | STR *mstr; |
2716 | char *mbuf; |
2717 | long mtype; |
2718 | int id, msize, flags, ret; |
2719 | |
2720 | id = (int)str_gnum(st[++sp]); |
2721 | mstr = st[++sp]; |
2722 | msize = (int)str_gnum(st[++sp]); |
2723 | mtype = (long)str_gnum(st[++sp]); |
2724 | flags = (int)str_gnum(st[++sp]); |
2725 | mbuf = str_get(mstr); |
2726 | if (mstr->str_cur < sizeof(long)+msize+1) { |
2727 | STR_GROW(mstr, sizeof(long)+msize+1); |
2728 | mbuf = str_get(mstr); |
2729 | } |
2730 | errno = 0; |
2731 | ret = msgrcv(id, mbuf, msize, mtype, flags); |
2732 | if (ret >= 0) { |
2733 | mstr->str_cur = sizeof(long)+ret; |
2734 | mstr->str_ptr[sizeof(long)+ret] = '\0'; |
2735 | } |
2736 | return ret; |
e5d73d77 |
2737 | #else |
2738 | fatal("msgrcv not implemented"); |
2739 | #endif |
c2ab57d4 |
2740 | } |
2741 | |
2742 | int |
2743 | do_semop(arglast) |
2744 | int *arglast; |
2745 | { |
fe14fcc3 |
2746 | #ifdef HAS_SEM |
c2ab57d4 |
2747 | register STR **st = stack->ary_array; |
2748 | register int sp = arglast[0]; |
2749 | STR *opstr; |
2750 | char *opbuf; |
2751 | int id, opsize; |
2752 | |
2753 | id = (int)str_gnum(st[++sp]); |
2754 | opstr = st[++sp]; |
2755 | opbuf = str_get(opstr); |
2756 | opsize = opstr->str_cur; |
2757 | if (opsize < sizeof(struct sembuf) |
2758 | || (opsize % sizeof(struct sembuf)) != 0) { |
2759 | errno = EINVAL; |
2760 | return -1; |
2761 | } |
2762 | errno = 0; |
6e21c824 |
2763 | return semop(id, (struct sembuf *)opbuf, opsize/sizeof(struct sembuf)); |
e5d73d77 |
2764 | #else |
2765 | fatal("semop not implemented"); |
2766 | #endif |
c2ab57d4 |
2767 | } |
2768 | |
2769 | int |
2770 | do_shmio(optype, arglast) |
2771 | int optype; |
2772 | int *arglast; |
2773 | { |
fe14fcc3 |
2774 | #ifdef HAS_SHM |
c2ab57d4 |
2775 | register STR **st = stack->ary_array; |
2776 | register int sp = arglast[0]; |
2777 | STR *mstr; |
2778 | char *mbuf, *shm; |
2779 | int id, mpos, msize; |
2780 | struct shmid_ds shmds; |
6e21c824 |
2781 | #ifndef VOIDSHMAT |
c2ab57d4 |
2782 | extern char *shmat(); |
6e21c824 |
2783 | #endif |
c2ab57d4 |
2784 | |
2785 | id = (int)str_gnum(st[++sp]); |
2786 | mstr = st[++sp]; |
2787 | mpos = (int)str_gnum(st[++sp]); |
2788 | msize = (int)str_gnum(st[++sp]); |
2789 | errno = 0; |
2790 | if (shmctl(id, IPC_STAT, &shmds) == -1) |
2791 | return -1; |
2792 | if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) { |
2793 | errno = EFAULT; /* can't do as caller requested */ |
2794 | return -1; |
2795 | } |
6e21c824 |
2796 | shm = (char*)shmat(id, (char*)NULL, (optype == O_SHMREAD) ? SHM_RDONLY : 0); |
c2ab57d4 |
2797 | if (shm == (char *)-1) /* I hate System V IPC, I really do */ |
2798 | return -1; |
2799 | mbuf = str_get(mstr); |
2800 | if (optype == O_SHMREAD) { |
2801 | if (mstr->str_cur < msize) { |
2802 | STR_GROW(mstr, msize+1); |
2803 | mbuf = str_get(mstr); |
2804 | } |
2805 | bcopy(shm + mpos, mbuf, msize); |
2806 | mstr->str_cur = msize; |
2807 | mstr->str_ptr[msize] = '\0'; |
2808 | } |
2809 | else { |
2810 | int n; |
2811 | |
2812 | if ((n = mstr->str_cur) > msize) |
2813 | n = msize; |
2814 | bcopy(mbuf, shm + mpos, n); |
2815 | if (n < msize) |
2816 | bzero(shm + mpos + n, msize - n); |
2817 | } |
2818 | return shmdt(shm); |
e5d73d77 |
2819 | #else |
2820 | fatal("shm I/O not implemented"); |
2821 | #endif |
c2ab57d4 |
2822 | } |
2823 | |
fe14fcc3 |
2824 | #endif /* SYSV IPC */ |