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[wxWidgets.git] / utils / Install / sfxzip / unix.c
1 /*---------------------------------------------------------------------------
2
3 unix.c
4
5 Unix-specific routines for use with Info-ZIP's UnZip 5.3 and later.
6
7 Contains: readdir()
8 do_wild() <-- generic enough to put in fileio.c?
9 mapattr()
10 mapname()
11 checkdir()
12 mkdir()
13 close_outfile()
14 set_direc_attribs()
15 stamp_file()
16 version()
17
18 ---------------------------------------------------------------------------*/
19
20
21 #define UNZIP_INTERNAL
22 #include "unzip.h"
23
24 #ifdef SCO_XENIX
25 # define SYSNDIR
26 #else /* SCO Unix, AIX, DNIX, TI SysV, Coherent 4.x, ... */
27 # if defined(__convexc__) || defined(SYSV) || defined(CRAY) || defined(BSD4_4)
28 # define DIRENT
29 # endif
30 #endif
31 #if defined(_AIX)
32 # define DIRENT
33 #endif
34 #ifdef COHERENT
35 # if defined(_I386) || (defined(__COHERENT__) && (__COHERENT__ >= 0x420))
36 # define DIRENT
37 # endif
38 #endif
39
40 /* GRR: may need to uncomment this: */
41 #if 0
42 #if defined(_POSIX_VERSION)
43 # define DIRENT
44 #endif
45 #endif
46
47 #ifdef DIRENT
48 # include <dirent.h>
49 #else
50 # ifdef SYSV
51 # ifdef SYSNDIR
52 # include <sys/ndir.h>
53 # else
54 # include <ndir.h>
55 # endif
56 # else /* !SYSV */
57 # ifndef NO_SYSDIR
58 # include <sys/dir.h>
59 # endif
60 # endif /* ?SYSV */
61 # ifndef dirent
62 # define dirent direct
63 # endif
64 #endif /* ?DIRENT */
65
66 #ifdef ACORN_FTYPE_NFS
67 /* Acorn bits for NFS filetyping */
68 typedef struct {
69 uch ID[2];
70 uch size[2];
71 uch ID_2[4];
72 uch loadaddr[4];
73 uch execaddr[4];
74 uch attr[4];
75 } RO_extra_block;
76
77 static int isRISCOSexfield OF((uch *extra_field));
78 #endif /* ACORN_FTYPE_NFS */
79
80 static int created_dir; /* used in mapname(), checkdir() */
81 static int renamed_fullpath; /* ditto */
82
83
84 #ifndef SFX
85 #ifdef NO_DIR /* for AT&T 3B1 */
86
87 #define opendir(path) fopen(path,"r")
88 #define closedir(dir) fclose(dir)
89 typedef FILE DIR;
90
91 /*
92 * Apparently originally by Rich Salz.
93 * Cleaned up and modified by James W. Birdsall.
94 */
95 struct dirent *readdir(dirp)
96 DIR *dirp;
97 {
98 static struct dirent entry;
99
100 if (dirp == NULL)
101 return NULL;
102
103 for (;;)
104 if (fread(&entry, sizeof (struct dirent), 1, dirp) == 0)
105 return (struct dirent *)NULL;
106 else if (entry.d_ino)
107 return &entry;
108
109 } /* end function readdir() */
110
111 #endif /* NO_DIR */
112
113
114 /**********************/
115 /* Function do_wild() */ /* for porting: dir separator; match(ignore_case) */
116 /**********************/
117
118 char *do_wild(__G__ wildspec)
119 __GDEF
120 char *wildspec; /* only used first time on a given dir */
121 {
122 static DIR *dir = (DIR *)NULL;
123 static char *dirname, *wildname, matchname[FILNAMSIZ];
124 static int firstcall=TRUE, have_dirname, dirnamelen;
125 struct dirent *file;
126
127
128 /* Even when we're just returning wildspec, we *always* do so in
129 * matchname[]--calling routine is allowed to append four characters
130 * to the returned string, and wildspec may be a pointer to argv[].
131 */
132 if (firstcall) { /* first call: must initialize everything */
133 firstcall = FALSE;
134
135 if (!iswild(wildspec)) {
136 strcpy(matchname, wildspec);
137 have_dirname = FALSE;
138 dir = NULL;
139 return matchname;
140 }
141
142 /* break the wildspec into a directory part and a wildcard filename */
143 if ((wildname = strrchr(wildspec, '/')) == (char *)NULL) {
144 dirname = ".";
145 dirnamelen = 1;
146 have_dirname = FALSE;
147 wildname = wildspec;
148 } else {
149 ++wildname; /* point at character after '/' */
150 dirnamelen = wildname - wildspec;
151 if ((dirname = (char *)malloc(dirnamelen+1)) == (char *)NULL) {
152 Info(slide, 0x201, ((char *)slide,
153 "warning: cannot allocate wildcard buffers\n"));
154 strcpy(matchname, wildspec);
155 return matchname; /* but maybe filespec was not a wildcard */
156 }
157 strncpy(dirname, wildspec, dirnamelen);
158 dirname[dirnamelen] = '\0'; /* terminate for strcpy below */
159 have_dirname = TRUE;
160 }
161
162 if ((dir = opendir(dirname)) != (DIR *)NULL) {
163 while ((file = readdir(dir)) != (struct dirent *)NULL) {
164 Trace((stderr, "do_wild: readdir returns %s\n", file->d_name));
165 if (file->d_name[0] == '.' && wildname[0] != '.')
166 continue; /* Unix: '*' and '?' do not match leading dot */
167 if (match(file->d_name, wildname, 0) && /* 0 == case sens. */
168 /* skip "." and ".." directory entries */
169 strcmp(file->d_name, ".") && strcmp(file->d_name, "..")) {
170 Trace((stderr, "do_wild: match() succeeds\n"));
171 if (have_dirname) {
172 strcpy(matchname, dirname);
173 strcpy(matchname+dirnamelen, file->d_name);
174 } else
175 strcpy(matchname, file->d_name);
176 return matchname;
177 }
178 }
179 /* if we get to here directory is exhausted, so close it */
180 closedir(dir);
181 dir = (DIR *)NULL;
182 }
183
184 /* return the raw wildspec in case that works (e.g., directory not
185 * searchable, but filespec was not wild and file is readable) */
186 strcpy(matchname, wildspec);
187 return matchname;
188 }
189
190 /* last time through, might have failed opendir but returned raw wildspec */
191 if (dir == (DIR *)NULL) {
192 firstcall = TRUE; /* nothing left to try--reset for new wildspec */
193 if (have_dirname)
194 free(dirname);
195 return (char *)NULL;
196 }
197
198 /* If we've gotten this far, we've read and matched at least one entry
199 * successfully (in a previous call), so dirname has been copied into
200 * matchname already.
201 */
202 while ((file = readdir(dir)) != (struct dirent *)NULL) {
203 Trace((stderr, "do_wild: readdir returns %s\n", file->d_name));
204 if (file->d_name[0] == '.' && wildname[0] != '.')
205 continue; /* Unix: '*' and '?' do not match leading dot */
206 if (match(file->d_name, wildname, 0)) { /* 0 == don't ignore case */
207 Trace((stderr, "do_wild: match() succeeds\n"));
208 if (have_dirname) {
209 /* strcpy(matchname, dirname); */
210 strcpy(matchname+dirnamelen, file->d_name);
211 } else
212 strcpy(matchname, file->d_name);
213 return matchname;
214 }
215 }
216
217 closedir(dir); /* have read at least one dir entry; nothing left */
218 dir = (DIR *)NULL;
219 firstcall = TRUE; /* reset for new wildspec */
220 if (have_dirname)
221 free(dirname);
222 return (char *)NULL;
223
224 } /* end function do_wild() */
225
226 #endif /* !SFX */
227
228
229
230
231
232 /**********************/
233 /* Function mapattr() */
234 /**********************/
235
236 int mapattr(__G)
237 __GDEF
238 {
239 ulg tmp = G.crec.external_file_attributes;
240
241 G.pInfo->file_attr = 0;
242 /* initialized to 0 for check in "default" branch below... */
243
244 switch (G.pInfo->hostnum) {
245 case AMIGA_:
246 tmp = (unsigned)(tmp>>17 & 7); /* Amiga RWE bits */
247 G.pInfo->file_attr = (unsigned)(tmp<<6 | tmp<<3 | tmp);
248 break;
249 case UNIX_:
250 case VMS_:
251 case ACORN_:
252 case ATARI_:
253 case BEOS_:
254 case QDOS_:
255 case TANDEM_:
256 G.pInfo->file_attr = (unsigned)(tmp >> 16);
257 if (G.pInfo->file_attr != 0 || !G.extra_field) {
258 return 0;
259 } else {
260 /* Some (non-Info-ZIP) implementations of Zip for Unix and
261 * VMS (and probably others ??) leave 0 in the upper 16-bit
262 * part of the external_file_attributes field. Instead, they
263 * store file permission attributes in some extra field.
264 * As a work-around, we search for the presence of one of
265 * these extra fields and fall back to the MSDOS compatible
266 * part of external_file_attributes if one of the known
267 * e.f. types has been detected.
268 * Later, we might implement extraction of the permission
269 * bits from the VMS extra field. But for now, the work-around
270 * should be sufficient to provide "readable" extracted files.
271 * (For ASI Unix e.f., an experimental remap from the e.f.
272 * mode value IS already provided!)
273 */
274 ush ebID;
275 unsigned ebLen;
276 uch *ef = G.extra_field;
277 unsigned ef_len = G.crec.extra_field_length;
278 int r = FALSE;
279
280 while (!r && ef_len >= EB_HEADSIZE) {
281 ebID = makeword(ef);
282 ebLen = (unsigned)makeword(ef+EB_LEN);
283 if (ebLen > (ef_len - EB_HEADSIZE))
284 /* discoverd some e.f. inconsistency! */
285 break;
286 switch (ebID) {
287 case EF_ASIUNIX:
288 if (ebLen >= (EB_ASI_MODE+2)) {
289 G.pInfo->file_attr =
290 (unsigned)makeword(ef+(EB_HEADSIZE+EB_ASI_MODE));
291 /* force stop of loop: */
292 ef_len = (ebLen + EB_HEADSIZE);
293 break;
294 }
295 /* else: fall through! */
296 case EF_PKVMS:
297 /* "found nondecypherable e.f. with perm. attr" */
298 r = TRUE;
299 default:
300 break;
301 }
302 ef_len -= (ebLen + EB_HEADSIZE);
303 ef += (ebLen + EB_HEADSIZE);
304 }
305 if (!r)
306 return 0;
307 }
308 /* fall through! */
309 /* all remaining cases: expand MSDOS read-only bit into write perms */
310 case FS_FAT_:
311 /* PKWARE's PKZip for Unix marks entries as FS_FAT_, but stores the
312 * Unix attributes in the upper 16 bits of the external attributes
313 * field, just like Info-ZIP's Zip for Unix. We try to use that
314 * value, after a check for consistency with the MSDOS attribute
315 * bits (see below).
316 */
317 G.pInfo->file_attr = (unsigned)(tmp >> 16);
318 /* fall through! */
319 case FS_HPFS_:
320 case FS_NTFS_:
321 case MAC_:
322 case TOPS20_:
323 default:
324 /* read-only bit --> write perms; subdir bit --> dir exec bit */
325 tmp = !(tmp & 1) << 1 | (tmp & 0x10) >> 4;
326 if ((G.pInfo->file_attr & 0700) == (unsigned)(0400 | tmp<<6))
327 /* keep previous G.pInfo->file_attr setting, when its "owner"
328 * part appears to be consistent with DOS attribute flags!
329 */
330 return 0;
331 G.pInfo->file_attr = (unsigned)(0444 | tmp<<6 | tmp<<3 | tmp);
332 break;
333 } /* end switch (host-OS-created-by) */
334
335 /* for originating systems with no concept of "group," "other," "system": */
336 umask( (int)(tmp=umask(0)) ); /* apply mask to expanded r/w(/x) perms */
337 G.pInfo->file_attr &= ~tmp;
338
339 return 0;
340
341 } /* end function mapattr() */
342
343
344
345
346
347 /************************/
348 /* Function mapname() */
349 /************************/
350 /* return 0 if no error, 1 if caution (filename */
351 int mapname(__G__ renamed) /* truncated), 2 if warning (skip file because */
352 __GDEF /* dir doesn't exist), 3 if error (skip file), */
353 int renamed; /* or 10 if out of memory (skip file) */
354 { /* [also IZ_VOL_LABEL, IZ_CREATED_DIR] */
355 char pathcomp[FILNAMSIZ]; /* path-component buffer */
356 char *pp, *cp=(char *)NULL; /* character pointers */
357 char *lastsemi=(char *)NULL; /* pointer to last semi-colon in pathcomp */
358 #ifdef ACORN_FTYPE_NFS
359 char *lastcomma=(char *)NULL; /* pointer to last comma in pathcomp */
360 #endif
361 int quote = FALSE; /* flags */
362 int error = 0;
363 register unsigned workch; /* hold the character being tested */
364
365
366 /*---------------------------------------------------------------------------
367 Initialize various pointers and counters and stuff.
368 ---------------------------------------------------------------------------*/
369
370 if (G.pInfo->vollabel)
371 return IZ_VOL_LABEL; /* can't set disk volume labels in Unix */
372
373 /* can create path as long as not just freshening, or if user told us */
374 G.create_dirs = (!uO.fflag || renamed);
375
376 created_dir = FALSE; /* not yet */
377
378 /* user gave full pathname: don't prepend rootpath */
379 renamed_fullpath = (renamed && (*G.filename == '/'));
380
381 if (checkdir(__G__ (char *)NULL, INIT) == 10)
382 return 10; /* initialize path buffer, unless no memory */
383
384 *pathcomp = '\0'; /* initialize translation buffer */
385 pp = pathcomp; /* point to translation buffer */
386 if (uO.jflag) /* junking directories */
387 cp = (char *)strrchr(G.filename, '/');
388 if (cp == (char *)NULL) /* no '/' or not junking dirs */
389 cp = G.filename; /* point to internal zipfile-member pathname */
390 else
391 ++cp; /* point to start of last component of path */
392
393 /*---------------------------------------------------------------------------
394 Begin main loop through characters in filename.
395 ---------------------------------------------------------------------------*/
396
397 while ((workch = (uch)*cp++) != 0) {
398
399 if (quote) { /* if character quoted, */
400 *pp++ = (char)workch; /* include it literally */
401 quote = FALSE;
402 } else
403 switch (workch) {
404 case '/': /* can assume -j flag not given */
405 *pp = '\0';
406 if ((error = checkdir(__G__ pathcomp, APPEND_DIR)) > 1)
407 return error;
408 pp = pathcomp; /* reset conversion buffer for next piece */
409 lastsemi = (char *)NULL; /* leave directory semi-colons alone */
410 break;
411
412 case ';': /* VMS version (or DEC-20 attrib?) */
413 lastsemi = pp;
414 *pp++ = ';'; /* keep for now; remove VMS ";##" */
415 break; /* later, if requested */
416
417 #ifdef ACORN_FTYPE_NFS
418 case ',': /* NFS filetype extension */
419 lastcomma = pp;
420 *pp++ = ','; /* keep for now; may need to remove */
421 break; /* later, if requested */
422 #endif
423
424 case '\026': /* control-V quote for special chars */
425 quote = TRUE; /* set flag for next character */
426 break;
427
428 #ifdef MTS
429 case ' ': /* change spaces to underscore under */
430 *pp++ = '_'; /* MTS; leave as spaces under Unix */
431 break;
432 #endif
433
434 default:
435 /* allow European characters in filenames: */
436 if (isprint(workch) || (128 <= workch && workch <= 254))
437 *pp++ = (char)workch;
438 } /* end switch */
439
440 } /* end while loop */
441
442 *pp = '\0'; /* done with pathcomp: terminate it */
443
444 /* if not saving them, remove VMS version numbers (appended ";###") */
445 if (!uO.V_flag && lastsemi) {
446 pp = lastsemi + 1;
447 while (isdigit((uch)(*pp)))
448 ++pp;
449 if (*pp == '\0') /* only digits between ';' and end: nuke */
450 *lastsemi = '\0';
451 }
452
453 #ifdef ACORN_FTYPE_NFS
454 /* translate Acorn filetype information if asked to do so */
455 if (uO.acorn_nfs_ext && isRISCOSexfield(G.extra_field)) {
456 /* file *must* have a RISC OS extra field */
457 int ft = (int)makelong(((RO_extra_block *)G.extra_field)->loadaddr);
458 /*32-bit*/
459 if (lastcomma) {
460 pp = lastcomma + 1;
461 while (isxdigit((uch)(*pp))) ++pp;
462 if (pp == lastcomma+4 && *pp == '\0') *lastcomma='\0'; /* nuke */
463 }
464 if ((ft & 1<<31)==0) ft=0x000FFD00;
465 sprintf(pathcomp+strlen(pathcomp), ",%03x", ft>>8 & 0xFFF);
466 }
467 #endif /* ACORN_FTYPE_NFS */
468
469 /*---------------------------------------------------------------------------
470 Report if directory was created (and no file to create: filename ended
471 in '/'), check name to be sure it exists, and combine path and name be-
472 fore exiting.
473 ---------------------------------------------------------------------------*/
474
475 if (G.filename[strlen(G.filename) - 1] == '/') {
476 checkdir(__G__ G.filename, GETPATH);
477 if (created_dir) {
478 if (QCOND2) {
479 Info(slide, 0, ((char *)slide, " creating: %s\n",
480 G.filename));
481 }
482 #ifndef NO_CHMOD
483 /* set approx. dir perms (make sure can still read/write in dir) */
484 if (chmod(G.filename, (0xffff & G.pInfo->file_attr) | 0700))
485 perror("chmod (directory attributes) error");
486 #endif
487 return IZ_CREATED_DIR; /* set dir time (note trailing '/') */
488 }
489 return 2; /* dir existed already; don't look for data to extract */
490 }
491
492 if (*pathcomp == '\0') {
493 Info(slide, 1, ((char *)slide, "mapname: conversion of %s failed\n",
494 G.filename));
495 return 3;
496 }
497
498 checkdir(__G__ pathcomp, APPEND_NAME); /* returns 1 if truncated: care? */
499 checkdir(__G__ G.filename, GETPATH);
500
501 return error;
502
503 } /* end function mapname() */
504
505
506
507
508 #if 0 /*========== NOTES ==========*/
509
510 extract-to dir: a:path/
511 buildpath: path1/path2/ ... (NULL-terminated)
512 pathcomp: filename
513
514 mapname():
515 loop over chars in zipfile member name
516 checkdir(path component, COMPONENT | CREATEDIR) --> map as required?
517 (d:/tmp/unzip/) (disk:[tmp.unzip.)
518 (d:/tmp/unzip/jj/) (disk:[tmp.unzip.jj.)
519 (d:/tmp/unzip/jj/temp/) (disk:[tmp.unzip.jj.temp.)
520 finally add filename itself and check for existence? (could use with rename)
521 (d:/tmp/unzip/jj/temp/msg.outdir) (disk:[tmp.unzip.jj.temp]msg.outdir)
522 checkdir(name, GETPATH) --> copy path to name and free space
523
524 #endif /* 0 */
525
526
527
528
529 /***********************/
530 /* Function checkdir() */
531 /***********************/
532
533 int checkdir(__G__ pathcomp, flag)
534 __GDEF
535 char *pathcomp;
536 int flag;
537 /*
538 * returns: 1 - (on APPEND_NAME) truncated filename
539 * 2 - path doesn't exist, not allowed to create
540 * 3 - path doesn't exist, tried to create and failed; or
541 * path exists and is not a directory, but is supposed to be
542 * 4 - path is too long
543 * 10 - can't allocate memory for filename buffers
544 */
545 {
546 static int rootlen = 0; /* length of rootpath */
547 static char *rootpath; /* user's "extract-to" directory */
548 static char *buildpath; /* full path (so far) to extracted file */
549 static char *end; /* pointer to end of buildpath ('\0') */
550
551 # define FN_MASK 7
552 # define FUNCTION (flag & FN_MASK)
553
554
555
556 /*---------------------------------------------------------------------------
557 APPEND_DIR: append the path component to the path being built and check
558 for its existence. If doesn't exist and we are creating directories, do
559 so for this one; else signal success or error as appropriate.
560 ---------------------------------------------------------------------------*/
561
562 if (FUNCTION == APPEND_DIR) {
563 int too_long = FALSE;
564 #ifdef SHORT_NAMES
565 char *old_end = end;
566 #endif
567
568 Trace((stderr, "appending dir segment [%s]\n", pathcomp));
569 while ((*end = *pathcomp++) != '\0')
570 ++end;
571 #ifdef SHORT_NAMES /* path components restricted to 14 chars, typically */
572 if ((end-old_end) > FILENAME_MAX) /* GRR: proper constant? */
573 *(end = old_end + FILENAME_MAX) = '\0';
574 #endif
575
576 /* GRR: could do better check, see if overrunning buffer as we go:
577 * check end-buildpath after each append, set warning variable if
578 * within 20 of FILNAMSIZ; then if var set, do careful check when
579 * appending. Clear variable when begin new path. */
580
581 if ((end-buildpath) > FILNAMSIZ-3) /* need '/', one-char name, '\0' */
582 too_long = TRUE; /* check if extracting directory? */
583 if (stat(buildpath, &G.statbuf)) { /* path doesn't exist */
584 if (!G.create_dirs) { /* told not to create (freshening) */
585 free(buildpath);
586 return 2; /* path doesn't exist: nothing to do */
587 }
588 if (too_long) {
589 Info(slide, 1, ((char *)slide,
590 "checkdir error: path too long: %s\n", buildpath));
591 free(buildpath);
592 return 4; /* no room for filenames: fatal */
593 }
594 if (mkdir(buildpath, 0777) == -1) { /* create the directory */
595 Info(slide, 1, ((char *)slide,
596 "checkdir error: cannot create %s\n\
597 unable to process %s.\n", buildpath, G.filename));
598 free(buildpath);
599 return 3; /* path didn't exist, tried to create, failed */
600 }
601 created_dir = TRUE;
602 } else if (!S_ISDIR(G.statbuf.st_mode)) {
603 Info(slide, 1, ((char *)slide,
604 "checkdir error: %s exists but is not directory\n\
605 unable to process %s.\n", buildpath, G.filename));
606 free(buildpath);
607 return 3; /* path existed but wasn't dir */
608 }
609 if (too_long) {
610 Info(slide, 1, ((char *)slide,
611 "checkdir error: path too long: %s\n", buildpath));
612 free(buildpath);
613 return 4; /* no room for filenames: fatal */
614 }
615 *end++ = '/';
616 *end = '\0';
617 Trace((stderr, "buildpath now = [%s]\n", buildpath));
618 return 0;
619
620 } /* end if (FUNCTION == APPEND_DIR) */
621
622 /*---------------------------------------------------------------------------
623 GETPATH: copy full path to the string pointed at by pathcomp, and free
624 buildpath.
625 ---------------------------------------------------------------------------*/
626
627 if (FUNCTION == GETPATH) {
628 strcpy(pathcomp, buildpath);
629 Trace((stderr, "getting and freeing path [%s]\n", pathcomp));
630 free(buildpath);
631 buildpath = end = (char *)NULL;
632 return 0;
633 }
634
635 /*---------------------------------------------------------------------------
636 APPEND_NAME: assume the path component is the filename; append it and
637 return without checking for existence.
638 ---------------------------------------------------------------------------*/
639
640 if (FUNCTION == APPEND_NAME) {
641 #ifdef SHORT_NAMES
642 char *old_end = end;
643 #endif
644
645 Trace((stderr, "appending filename [%s]\n", pathcomp));
646 while ((*end = *pathcomp++) != '\0') {
647 ++end;
648 #ifdef SHORT_NAMES /* truncate name at 14 characters, typically */
649 if ((end-old_end) > FILENAME_MAX) /* GRR: proper constant? */
650 *(end = old_end + FILENAME_MAX) = '\0';
651 #endif
652 if ((end-buildpath) >= FILNAMSIZ) {
653 *--end = '\0';
654 Info(slide, 0x201, ((char *)slide,
655 "checkdir warning: path too long; truncating\n\
656 %s\n -> %s\n", G.filename, buildpath));
657 return 1; /* filename truncated */
658 }
659 }
660 Trace((stderr, "buildpath now = [%s]\n", buildpath));
661 return 0; /* could check for existence here, prompt for new name... */
662 }
663
664 /*---------------------------------------------------------------------------
665 INIT: allocate and initialize buffer space for the file currently being
666 extracted. If file was renamed with an absolute path, don't prepend the
667 extract-to path.
668 ---------------------------------------------------------------------------*/
669
670 /* GRR: for VMS and TOPS-20, add up to 13 to strlen */
671
672 if (FUNCTION == INIT) {
673 Trace((stderr, "initializing buildpath to "));
674 #ifdef ACORN_FTYPE_NFS
675 if ((buildpath = (char *)malloc(strlen(G.filename)+rootlen+
676 (uO.acorn_nfs_ext ? 5 : 1)))
677 #else
678 if ((buildpath = (char *)malloc(strlen(G.filename)+rootlen+1))
679 #endif
680 == (char *)NULL)
681 return 10;
682 if ((rootlen > 0) && !renamed_fullpath) {
683 strcpy(buildpath, rootpath);
684 end = buildpath + rootlen;
685 } else {
686 *buildpath = '\0';
687 end = buildpath;
688 }
689 Trace((stderr, "[%s]\n", buildpath));
690 return 0;
691 }
692
693 /*---------------------------------------------------------------------------
694 ROOT: if appropriate, store the path in rootpath and create it if neces-
695 sary; else assume it's a zipfile member and return. This path segment
696 gets used in extracting all members from every zipfile specified on the
697 command line.
698 ---------------------------------------------------------------------------*/
699
700 #if (!defined(SFX) || defined(SFX_EXDIR))
701 if (FUNCTION == ROOT) {
702 Trace((stderr, "initializing root path to [%s]\n", pathcomp));
703 if (pathcomp == (char *)NULL) {
704 rootlen = 0;
705 return 0;
706 }
707 if ((rootlen = strlen(pathcomp)) > 0) {
708 if (pathcomp[rootlen-1] == '/') {
709 pathcomp[--rootlen] = '\0';
710 }
711 if (rootlen > 0 && (stat(pathcomp, &G.statbuf) ||
712 !S_ISDIR(G.statbuf.st_mode))) /* path does not exist */
713 {
714 if (!G.create_dirs /* || iswild(pathcomp) */ ) {
715 rootlen = 0;
716 return 2; /* skip (or treat as stored file) */
717 }
718 /* create the directory (could add loop here to scan pathcomp
719 * and create more than one level, but why really necessary?) */
720 if (mkdir(pathcomp, 0777) == -1) {
721 Info(slide, 1, ((char *)slide,
722 "checkdir: cannot create extraction directory: %s\n",
723 pathcomp));
724 rootlen = 0; /* path didn't exist, tried to create, and */
725 return 3; /* failed: file exists, or 2+ levels required */
726 }
727 }
728 if ((rootpath = (char *)malloc(rootlen+2)) == (char *)NULL) {
729 rootlen = 0;
730 return 10;
731 }
732 strcpy(rootpath, pathcomp);
733 rootpath[rootlen++] = '/';
734 rootpath[rootlen] = '\0';
735 Trace((stderr, "rootpath now = [%s]\n", rootpath));
736 }
737 return 0;
738 }
739 #endif /* !SFX || SFX_EXDIR */
740
741 /*---------------------------------------------------------------------------
742 END: free rootpath, immediately prior to program exit.
743 ---------------------------------------------------------------------------*/
744
745 if (FUNCTION == END) {
746 Trace((stderr, "freeing rootpath\n"));
747 if (rootlen > 0) {
748 free(rootpath);
749 rootlen = 0;
750 }
751 return 0;
752 }
753
754 return 99; /* should never reach */
755
756 } /* end function checkdir() */
757
758
759
760
761
762 #ifdef NO_MKDIR
763
764 /********************/
765 /* Function mkdir() */
766 /********************/
767
768 int mkdir(path, mode)
769 char *path;
770 int mode; /* ignored */
771 /*
772 * returns: 0 - successful
773 * -1 - failed (errno not set, however)
774 */
775 {
776 char command[FILNAMSIZ+40]; /* buffer for system() call */
777
778 /* GRR 930416: added single quotes around path to avoid bug with
779 * creating directories with ampersands in name; not yet tested */
780 sprintf(command, "IFS=\" \t\n\" /bin/mkdir '%s' 2>/dev/null", path);
781 if (system(command))
782 return -1;
783 return 0;
784 }
785
786 #endif /* NO_MKDIR */
787
788
789
790
791
792 #if 0
793 #ifdef MORE
794
795 /**************************/
796 /* Function screenlines() */
797 /**************************/
798
799 int screenlines()
800 {
801 char *envptr, *getenv();
802 int n;
803
804 /* GRR: this is overly simplistic; should use winsize struct and
805 * appropriate TIOCGWINSZ ioctl(), assuming exists on enough systems
806 */
807 envptr = getenv("LINES");
808 if (envptr == (char *)NULL || (n = atoi(envptr)) < 5)
809 return 24; /* VT-100 assumed to be minimal hardware */
810 else
811 return n;
812 }
813
814 #endif /* MORE */
815 #endif /* 0 */
816
817
818
819
820
821 #ifndef MTS
822
823 /****************************/
824 /* Function close_outfile() */
825 /****************************/
826
827 void close_outfile(__G) /* GRR: change to return PK-style warning level */
828 __GDEF
829 {
830 iztimes zt;
831 ush z_uidgid[2];
832 unsigned eb_izux_flg;
833
834 /*---------------------------------------------------------------------------
835 If symbolic links are supported, allocate a storage area, put the uncom-
836 pressed "data" in it, and create the link. Since we know it's a symbolic
837 link to start with, we shouldn't have to worry about overflowing unsigned
838 ints with unsigned longs.
839 ---------------------------------------------------------------------------*/
840
841 #ifdef SYMLINKS
842 if (G.symlnk) {
843 unsigned ucsize = (unsigned)G.lrec.ucsize;
844 char *linktarget = (char *)malloc((unsigned)G.lrec.ucsize+1);
845
846 fclose(G.outfile); /* close "data" file... */
847 G.outfile = fopen(G.filename, FOPR); /* ...and reopen for reading */
848 if (!linktarget || fread(linktarget, 1, ucsize, G.outfile) !=
849 (int)ucsize)
850 {
851 Info(slide, 0x201, ((char *)slide,
852 "warning: symbolic link (%s) failed\n", G.filename));
853 if (linktarget)
854 free(linktarget);
855 fclose(G.outfile);
856 return;
857 }
858 fclose(G.outfile); /* close "data" file for good... */
859 unlink(G.filename); /* ...and delete it */
860 linktarget[ucsize] = '\0';
861 if (QCOND2)
862 Info(slide, 0, ((char *)slide, "-> %s ", linktarget));
863 if (symlink(linktarget, G.filename)) /* create the real link */
864 perror("symlink error");
865 free(linktarget);
866 return; /* can't set time on symlinks */
867 }
868 #endif /* SYMLINKS */
869
870 fclose(G.outfile);
871 #ifdef QLZIP
872 if (G.extra_field) {
873 static void qlfix OF((__GPRO__ uch *ef_ptr, unsigned ef_len));
874
875 qlfix(__G__ G.extra_field, G.lrec.extra_field_length);
876 }
877 #endif
878
879 /*---------------------------------------------------------------------------
880 Convert from MSDOS-format local time and date to Unix-format 32-bit GMT
881 time: adjust base year from 1980 to 1970, do usual conversions from
882 yy/mm/dd hh:mm:ss to elapsed seconds, and account for timezone and day-
883 light savings time differences. If we have a Unix extra field, however,
884 we're laughing: both mtime and atime are ours. On the other hand, we
885 then have to check for restoration of UID/GID.
886 ---------------------------------------------------------------------------*/
887
888 eb_izux_flg = (G.extra_field ? ef_scan_for_izux(G.extra_field,
889 G.lrec.extra_field_length, 0, G.lrec.last_mod_dos_datetime,
890 #ifdef IZ_CHECK_TZ
891 (G.tz_is_valid ? &zt : NULL),
892 #else
893 &zt,
894 #endif
895 z_uidgid) : 0);
896 if (eb_izux_flg & EB_UT_FL_MTIME) {
897 TTrace((stderr, "\nclose_outfile: Unix e.f. modif. time = %ld\n",
898 zt.mtime));
899 } else {
900 zt.mtime = dos_to_unix_time(G.lrec.last_mod_dos_datetime);
901 }
902 if (eb_izux_flg & EB_UT_FL_ATIME) {
903 TTrace((stderr, "close_outfile: Unix e.f. access time = %ld\n",
904 zt.atime));
905 } else {
906 zt.atime = zt.mtime;
907 TTrace((stderr, "\nclose_outfile: modification/access times = %ld\n",
908 zt.mtime));
909 }
910
911 /* if -X option was specified and we have UID/GID info, restore it */
912 if (uO.X_flag && eb_izux_flg & EB_UX2_VALID) {
913 TTrace((stderr, "close_outfile: restoring Unix UID/GID info\n"));
914 if (chown(G.filename, (uid_t)z_uidgid[0], (gid_t)z_uidgid[1]))
915 {
916 if (uO.qflag)
917 Info(slide, 0x201, ((char *)slide,
918 "warning: cannot set UID %d and/or GID %d for %s\n",
919 z_uidgid[0], z_uidgid[1], G.filename));
920 else
921 Info(slide, 0x201, ((char *)slide,
922 " (warning) cannot set UID %d and/or GID %d",
923 z_uidgid[0], z_uidgid[1]));
924 }
925 }
926
927 /* set the file's access and modification times */
928 if (utime(G.filename, (ztimbuf *)&zt)) {
929 #ifdef AOS_VS
930 if (uO.qflag)
931 Info(slide, 0x201, ((char *)slide, "... cannot set time for %s\n",
932 G.filename));
933 else
934 Info(slide, 0x201, ((char *)slide, "... cannot set time"));
935 #else
936 if (uO.qflag)
937 Info(slide, 0x201, ((char *)slide,
938 "warning: cannot set times for %s\n", G.filename));
939 else
940 Info(slide, 0x201, ((char *)slide,
941 " (warning) cannot set times"));
942 #endif /* ?AOS_VS */
943 }
944
945 /*---------------------------------------------------------------------------
946 Change the file permissions from default ones to those stored in the
947 zipfile.
948 ---------------------------------------------------------------------------*/
949
950 #ifndef NO_CHMOD
951 if (chmod(G.filename, 0xffff & G.pInfo->file_attr))
952 perror("chmod (file attributes) error");
953 #endif
954
955 } /* end function close_outfile() */
956
957 #endif /* !MTS */
958
959
960
961
962 #ifdef SET_DIR_ATTRIB
963 /* messages of code for setting directory attributes */
964 static char Far DirlistUidGidFailed[] =
965 "warning: cannot set UID %d and/or GID %d for %s\n";
966 static char Far DirlistUtimeFailed[] =
967 "warning: cannot set modification, access times for %s\n";
968 # ifndef NO_CHMOD
969 static char Far DirlistChmodFailed[] =
970 "warning: cannot set permissions for %s\n";
971 # endif
972
973
974 int set_direc_attribs(__G__ d)
975 __GDEF
976 dirtime *d;
977 {
978 int errval = PK_OK;
979
980 if (d->have_uidgid &&
981 chown(d->fn, (uid_t)d->uidgid[0], (gid_t)d->uidgid[1]))
982 {
983 Info(slide, 0x201, ((char *)slide,
984 LoadFarString(DirlistUidGidFailed),
985 d->uidgid[0], d->uidgid[1], d->fn));
986 if (!errval)
987 errval = PK_WARN;
988 }
989 if (utime(d->fn, &d->u.t2)) {
990 Info(slide, 0x201, ((char *)slide,
991 LoadFarString(DirlistUtimeFailed), d->fn));
992 if (!errval)
993 errval = PK_WARN;
994 }
995 #ifndef NO_CHMOD
996 if (chmod(d->fn, 0xffff & d->perms)) {
997 Info(slide, 0x201, ((char *)slide,
998 LoadFarString(DirlistChmodFailed), d->fn));
999 /* perror("chmod (file attributes) error"); */
1000 if (!errval)
1001 errval = PK_WARN;
1002 }
1003 #endif /* !NO_CHMOD */
1004 return errval;
1005 } /* end function set_directory_attributes() */
1006
1007 #endif /* SET_DIR_ATTRIB */
1008
1009
1010
1011
1012 #ifdef TIMESTAMP
1013
1014 /***************************/
1015 /* Function stamp_file() */
1016 /***************************/
1017
1018 int stamp_file(fname, modtime)
1019 ZCONST char *fname;
1020 time_t modtime;
1021 {
1022 ztimbuf tp;
1023
1024 tp.modtime = tp.actime = modtime;
1025 return (utime(fname, &tp));
1026
1027 } /* end function stamp_file() */
1028
1029 #endif /* TIMESTAMP */
1030
1031
1032
1033
1034 #ifndef SFX
1035
1036 /************************/
1037 /* Function version() */
1038 /************************/
1039
1040 void version(__G)
1041 __GDEF
1042 {
1043 #if defined(CRAY) || defined(NX_CURRENT_COMPILER_RELEASE) || defined(NetBSD)
1044 char buf1[40];
1045 #if defined(CRAY) || defined(NX_CURRENT_COMPILER_RELEASE)
1046 char buf2[40];
1047 #endif
1048 #endif
1049
1050 /* Pyramid, NeXT have problems with huge macro expansion, too: no Info() */
1051 sprintf((char *)slide, LoadFarString(CompiledWith),
1052
1053 #ifdef __GNUC__
1054 # ifdef NX_CURRENT_COMPILER_RELEASE
1055 (sprintf(buf1, "NeXT DevKit %d.%02d ", NX_CURRENT_COMPILER_RELEASE/100,
1056 NX_CURRENT_COMPILER_RELEASE%100), buf1),
1057 (strlen(__VERSION__) > 8)? "(gcc)" :
1058 (sprintf(buf2, "(gcc %s)", __VERSION__), buf2),
1059 # else
1060 "gcc ", __VERSION__,
1061 # endif
1062 #else
1063 # if defined(CRAY) && defined(_RELEASE)
1064 "cc ", (sprintf(buf1, "version %d", _RELEASE), buf1),
1065 # else
1066 # ifdef __VERSION__
1067 "cc ", __VERSION__,
1068 # else
1069 "cc", "",
1070 # endif
1071 # endif
1072 #endif
1073
1074 "Unix",
1075
1076 #if defined(sgi) || defined(__sgi)
1077 " (Silicon Graphics IRIX)",
1078 #else
1079 #ifdef sun
1080 # ifdef sparc
1081 # ifdef __SVR4
1082 " (Sun SPARC/Solaris)",
1083 # else /* may or may not be SunOS */
1084 " (Sun SPARC)",
1085 # endif
1086 # else
1087 # if defined(sun386) || defined(i386)
1088 " (Sun 386i)",
1089 # else
1090 # if defined(mc68020) || defined(__mc68020__)
1091 " (Sun 3)",
1092 # else /* mc68010 or mc68000: Sun 2 or earlier */
1093 " (Sun 2)",
1094 # endif
1095 # endif
1096 # endif
1097 #else
1098 #ifdef __hpux
1099 " (HP/UX)",
1100 #else
1101 #ifdef __osf__
1102 " (DEC OSF/1)",
1103 #else
1104 #ifdef _AIX
1105 " (IBM AIX)",
1106 #else
1107 #ifdef aiws
1108 " (IBM RT/AIX)",
1109 #else
1110 #if defined(CRAY) || defined(cray)
1111 # ifdef _UNICOS
1112 (sprintf(buf2, " (Cray UNICOS release %d)", _UNICOS), buf2),
1113 # else
1114 " (Cray UNICOS)",
1115 # endif
1116 #else
1117 #if defined(uts) || defined(UTS)
1118 " (Amdahl UTS)",
1119 #else
1120 #ifdef NeXT
1121 # ifdef mc68000
1122 " (NeXTStep/black)",
1123 # else
1124 " (NeXTStep for Intel)",
1125 # endif
1126 #else /* the next dozen or so are somewhat order-dependent */
1127 #ifdef LINUX
1128 # ifdef __ELF__
1129 " (Linux ELF)",
1130 # else
1131 " (Linux a.out)",
1132 # endif
1133 #else
1134 #ifdef MINIX
1135 " (Minix)",
1136 #else
1137 #ifdef M_UNIX
1138 " (SCO Unix)",
1139 #else
1140 #ifdef M_XENIX
1141 " (SCO Xenix)",
1142 #else
1143 #ifdef __NetBSD__
1144 # ifdef NetBSD0_8
1145 (sprintf(buf1, " (NetBSD 0.8%c)", (char)(NetBSD0_8 - 1 + 'A')), buf1),
1146 # else
1147 # ifdef NetBSD0_9
1148 (sprintf(buf1, " (NetBSD 0.9%c)", (char)(NetBSD0_9 - 1 + 'A')), buf1),
1149 # else
1150 # ifdef NetBSD1_0
1151 (sprintf(buf1, " (NetBSD 1.0%c)", (char)(NetBSD1_0 - 1 + 'A')), buf1),
1152 # else
1153 (BSD4_4 == 0.5)? " (NetBSD before 0.9)" : " (NetBSD 1.1 or later)",
1154 # endif
1155 # endif
1156 # endif
1157 #else
1158 #ifdef __FreeBSD__
1159 (BSD4_4 == 0.5)? " (FreeBSD 1.x)" : " (FreeBSD 2.0 or later)",
1160 #else
1161 #ifdef __bsdi__
1162 (BSD4_4 == 0.5)? " (BSD/386 1.0)" : " (BSD/386 1.1 or later)",
1163 #else
1164 #ifdef __386BSD__
1165 (BSD4_4 == 1)? " (386BSD, post-4.4 release)" : " (386BSD)",
1166 #else
1167 #if defined(i486) || defined(__i486) || defined(__i486__)
1168 " (Intel 486)",
1169 #else
1170 #if defined(i386) || defined(__i386) || defined(__i386__)
1171 " (Intel 386)",
1172 #else
1173 #ifdef pyr
1174 " (Pyramid)",
1175 #else
1176 #ifdef ultrix
1177 # ifdef mips
1178 " (DEC/MIPS)",
1179 # else
1180 # ifdef vax
1181 " (DEC/VAX)",
1182 # else /* __alpha? */
1183 " (DEC/Alpha)",
1184 # endif
1185 # endif
1186 #else
1187 #ifdef gould
1188 " (Gould)",
1189 #else
1190 #ifdef MTS
1191 " (MTS)",
1192 #else
1193 #ifdef __convexc__
1194 " (Convex)",
1195 #else
1196 #ifdef __QNX__
1197 " (QNX 4)",
1198 #else
1199 #ifdef __QNXNTO__
1200 " (QNX Neutrino)",
1201 #else
1202 #ifdef Lynx
1203 " (LynxOS)",
1204 #else
1205 "",
1206 #endif /* Lynx */
1207 #endif /* QNX Neutrino */
1208 #endif /* QNX 4 */
1209 #endif /* Convex */
1210 #endif /* MTS */
1211 #endif /* Gould */
1212 #endif /* DEC */
1213 #endif /* Pyramid */
1214 #endif /* 386 */
1215 #endif /* 486 */
1216 #endif /* 386BSD */
1217 #endif /* BSDI BSD/386 */
1218 #endif /* NetBSD */
1219 #endif /* FreeBSD */
1220 #endif /* SCO Xenix */
1221 #endif /* SCO Unix */
1222 #endif /* Minix */
1223 #endif /* Linux */
1224 #endif /* NeXT */
1225 #endif /* Amdahl */
1226 #endif /* Cray */
1227 #endif /* RT/AIX */
1228 #endif /* AIX */
1229 #endif /* OSF/1 */
1230 #endif /* HP/UX */
1231 #endif /* Sun */
1232 #endif /* SGI */
1233
1234 #ifdef __DATE__
1235 " on ", __DATE__
1236 #else
1237 "", ""
1238 #endif
1239 );
1240
1241 (*G.message)((zvoid *)&G, slide, (ulg)strlen((char *)slide), 0);
1242
1243 } /* end function version() */
1244
1245 #endif /* !SFX */
1246
1247
1248
1249
1250 #ifdef QLZIP
1251
1252 struct qdirect {
1253 long d_length __attribute__ ((packed)); /* file length */
1254 unsigned char d_access __attribute__ ((packed)); /* file access type */
1255 unsigned char d_type __attribute__ ((packed)); /* file type */
1256 long d_datalen __attribute__ ((packed)); /* data length */
1257 long d_reserved __attribute__ ((packed));/* Unused */
1258 short d_szname __attribute__ ((packed)); /* size of name */
1259 char d_name[36] __attribute__ ((packed));/* name area */
1260 long d_update __attribute__ ((packed)); /* last update */
1261 long d_refdate __attribute__ ((packed));
1262 long d_backup __attribute__ ((packed)); /* EOD */
1263 };
1264
1265 #define LONGID "QDOS02"
1266 #define EXTRALEN (sizeof(struct qdirect) + 8)
1267 #define JBLONGID "QZHD"
1268 #define JBEXTRALEN (sizeof(jbextra) - 4 * sizeof(char))
1269
1270 typedef struct {
1271 char eb_header[4] __attribute__ ((packed)); /* place_holder */
1272 char longid[8] __attribute__ ((packed));
1273 struct qdirect header __attribute__ ((packed));
1274 } qdosextra;
1275
1276 typedef struct {
1277 char eb_header[4]; /* place_holder */
1278 char longid[4];
1279 struct qdirect header;
1280 } jbextra;
1281
1282
1283
1284 /* The following two functions SH() and LG() convert big-endian short
1285 * and long numbers into native byte order. They are some kind of
1286 * counterpart to the generic UnZip's makeword() and makelong() functions.
1287 */
1288 static ush SH(ush val)
1289 {
1290 uch swapbuf[2];
1291
1292 swapbuf[1] = (uch)(val & 0xff);
1293 swapbuf[0] = (uch)(val >> 8);
1294 return (*(ush *)swapbuf);
1295 }
1296
1297
1298
1299 static ulg LG(ulg val)
1300 {
1301 /* convert the big-endian unsigned long number `val' to the machine
1302 * dependant representation
1303 */
1304 ush swapbuf[2];
1305
1306 swapbuf[1] = SH((ush)(val & 0xffff));
1307 swapbuf[0] = SH((ush)(val >> 16));
1308 return (*(ulg *)swapbuf);
1309 }
1310
1311
1312
1313 static void qlfix(__G__ ef_ptr, ef_len)
1314 __GDEF
1315 uch *ef_ptr;
1316 unsigned ef_len;
1317 {
1318 while (ef_len >= EB_HEADSIZE)
1319 {
1320 unsigned eb_id = makeword(EB_ID + ef_ptr);
1321 unsigned eb_len = makeword(EB_LEN + ef_ptr);
1322
1323 if (eb_len > (ef_len - EB_HEADSIZE)) {
1324 /* discovered some extra field inconsistency! */
1325 Trace((stderr,
1326 "qlfix: block length %u > rest ef_size %u\n", eb_len,
1327 ef_len - EB_HEADSIZE));
1328 break;
1329 }
1330
1331 switch (eb_id) {
1332 case EF_QDOS:
1333 {
1334 struct _ntc_
1335 {
1336 long id;
1337 long dlen;
1338 } ntc;
1339 long dlen = 0;
1340
1341 qdosextra *extra = (qdosextra *)ef_ptr;
1342 jbextra *jbp = (jbextra *)ef_ptr;
1343
1344 if (!strncmp(extra->longid, LONGID, strlen(LONGID)))
1345 {
1346 if (eb_len != EXTRALEN)
1347 if (uO.qflag)
1348 Info(slide, 0x201, ((char *)slide,
1349 "warning: invalid length in Qdos field for %s\n",
1350 G.filename));
1351 else
1352 Info(slide, 0x201, ((char *)slide,
1353 "warning: invalid length in Qdos field"));
1354
1355 if (extra->header.d_type)
1356 {
1357 dlen = extra->header.d_datalen;
1358 }
1359 }
1360
1361 if (!strncmp(jbp->longid, JBLONGID, strlen(JBLONGID)))
1362 {
1363 if (eb_len != JBEXTRALEN)
1364 if (uO.qflag)
1365 Info(slide, 0x201, ((char *)slide,
1366 "warning: invalid length in QZ field for %s\n",
1367 G.filename));
1368 else
1369 Info(slide, 0x201, ((char *)slide,
1370 "warning: invalid length in QZ field"));
1371 if(jbp->header.d_type)
1372 {
1373 dlen = jbp->header.d_datalen;
1374 }
1375 }
1376
1377 if ((long)LG(dlen) > 0)
1378 {
1379 G.outfile = fopen(G.filename,"r+");
1380 fseek(G.outfile, -8, SEEK_END);
1381 fread(&ntc, 8, 1, G.outfile);
1382 if(ntc.id != *(long *)"XTcc")
1383 {
1384 ntc.id = *(long *)"XTcc";
1385 ntc.dlen = dlen;
1386 fwrite (&ntc, 8, 1, G.outfile);
1387 }
1388 Info(slide, 0x201, ((char *)slide, "QData = %d", LG(dlen)));
1389 fclose(G.outfile);
1390 }
1391 return; /* finished, cancel further extra field scanning */
1392 }
1393
1394 default:
1395 Trace((stderr,"qlfix: unknown extra field block, ID=%d\n",
1396 eb_id));
1397 }
1398
1399 /* Skip this extra field block */
1400 ef_ptr += (eb_len + EB_HEADSIZE);
1401 ef_len -= (eb_len + EB_HEADSIZE);
1402 }
1403 }
1404 #endif /* QLZIP */
1405
1406
1407
1408
1409 #ifdef ACORN_FTYPE_NFS
1410
1411 /* Acorn bits for NFS filetyping */
1412
1413 static int isRISCOSexfield(uch *extra_field)
1414 {
1415 if (extra_field != NULL) {
1416 RO_extra_block *block = (RO_extra_block *)extra_field;
1417 return (
1418 makeword(block->ID) == EF_SPARK &&
1419 (makeword(block->size) == 24 || makeword(block->size) == 20) &&
1420 makelong(block->ID_2) == 0x30435241 /* ARC0 */);
1421 }
1422 return FALSE;
1423 }
1424 #endif /* ACORN_FTYPE_NFS */
wxWidgets (Impactor)