/[jscoverage]/trunk/js/config/nsinstall.c
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Contents of /trunk/js/config/nsinstall.c

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Tue Dec 9 03:37:47 2008 UTC (11 years, 6 months ago) by siliconforks
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1 /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* ***** BEGIN LICENSE BLOCK *****
3 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
4 *
5 * The contents of this file are subject to the Mozilla Public License Version
6 * 1.1 (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 * http://www.mozilla.org/MPL/
9 *
10 * Software distributed under the License is distributed on an "AS IS" basis,
11 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 * for the specific language governing rights and limitations under the
13 * License.
14 *
15 * The Original Code is mozilla.org code.
16 *
17 * The Initial Developer of the Original Code is
18 * Netscape Communications Corporation.
19 * Portions created by the Initial Developer are Copyright (C) 1998
20 * the Initial Developer. All Rights Reserved.
21 *
22 * Contributor(s):
23 *
24 * Alternatively, the contents of this file may be used under the terms of
25 * either of the GNU General Public License Version 2 or later (the "GPL"),
26 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
27 * in which case the provisions of the GPL or the LGPL are applicable instead
28 * of those above. If you wish to allow use of your version of this file only
29 * under the terms of either the GPL or the LGPL, and not to allow others to
30 * use your version of this file under the terms of the MPL, indicate your
31 * decision by deleting the provisions above and replace them with the notice
32 * and other provisions required by the GPL or the LGPL. If you do not delete
33 * the provisions above, a recipient may use your version of this file under
34 * the terms of any one of the MPL, the GPL or the LGPL.
35 *
36 * ***** END LICENSE BLOCK ***** */
37 /*
38 ** Netscape portable install command.
39 **
40 ** Brendan Eich, 7/20/95
41 */
42 #include <stdio.h> /* OSF/1 requires this before grp.h, so put it first */
43 #include <assert.h>
44 #include <fcntl.h>
45 #include <errno.h>
46 #include <dirent.h>
47 #include <limits.h>
48 #include <grp.h>
49 #include <pwd.h>
50 #include <stdio.h>
51 #include <stdlib.h>
52 #include <string.h>
53 #include <unistd.h>
54 #include <utime.h>
55 #include <sys/types.h>
56 #include <sys/stat.h>
57 #include "pathsub.h"
58
59 #ifdef HAVE_GETOPT_H
60 #include <getopt.h>
61 #endif
62
63 #ifdef SUNOS4
64 #include "sunos4.h"
65 #endif
66
67 #ifdef NEXTSTEP
68 #include <bsd/libc.h>
69 #endif
70
71 #ifdef __QNX__
72 #include <unix.h>
73 #endif
74
75 #ifdef NEED_S_ISLNK
76 #if !defined(S_ISLNK) && defined(S_IFLNK)
77 #define S_ISLNK(a) (((a) & S_IFMT) == S_IFLNK)
78 #endif
79 #endif
80
81 #ifndef _DIRECTORY_SEPARATOR
82 #define _DIRECTORY_SEPARATOR "/"
83 #endif /* _DIRECTORY_SEPARATOR */
84
85 #ifdef NEED_FCHMOD_PROTO
86 extern int fchmod(int fildes, mode_t mode);
87 #endif
88
89 static void
90 usage(void)
91 {
92 fprintf(stderr,
93 "usage: %s [-C cwd] [-L linkprefix] [-m mode] [-o owner] [-g group]\n"
94 " %*s [-DdltR] file [file ...] directory\n",
95 program, (int) strlen(program), "");
96 exit(2);
97 }
98
99 static int
100 mkdirs(char *path, mode_t mode)
101 {
102 char *cp;
103 struct stat sb;
104 int res;
105 int l;
106
107 /* strip trailing "/." */
108 l = strlen(path);
109 if(l > 1 && path[l - 1] == '.' && path[l - 2] == '/')
110 path[l - 2] = 0;
111
112 while (*path == '/' && path[1] == '/')
113 path++;
114 for (cp = strrchr(path, '/'); cp && cp != path && *(cp - 1) == '/'; cp--);
115 if (cp && cp != path) {
116 *cp = '\0';
117 if ((lstat(path, &sb) < 0 || !S_ISDIR(sb.st_mode)) &&
118 mkdirs(path, mode) < 0) {
119 return -1;
120 }
121 *cp = '/';
122 }
123
124 res = mkdir(path, mode);
125 if ((res != 0) && (errno == EEXIST))
126 return 0;
127 else
128 return res;
129 }
130
131 static uid_t
132 touid(char *owner)
133 {
134 struct passwd *pw;
135 uid_t uid;
136 char *cp;
137
138 pw = getpwnam(owner);
139 if (pw)
140 return pw->pw_uid;
141 uid = strtol(owner, &cp, 0);
142 if (uid == 0 && cp == owner)
143 fail("cannot find uid for %s", owner);
144 return uid;
145 }
146
147 static gid_t
148 togid(char *group)
149 {
150 struct group *gr;
151 gid_t gid;
152 char *cp;
153
154 gr = getgrnam(group);
155 if (gr)
156 return gr->gr_gid;
157 gid = strtol(group, &cp, 0);
158 if (gid == 0 && cp == group)
159 fail("cannot find gid for %s", group);
160 return gid;
161 }
162
163 static void
164 copyfile( char *name, char *toname, mode_t mode, char *group, char *owner,
165 int dotimes, uid_t uid, gid_t gid )
166 {
167 int fromfd, tofd = -1, cc, wc, exists;
168 char buf[BUFSIZ], *bp;
169 struct stat sb, tosb;
170 struct utimbuf utb;
171
172 exists = (lstat(toname, &tosb) == 0);
173
174 fromfd = open(name, O_RDONLY);
175 if (fromfd < 0 || fstat(fromfd, &sb) < 0)
176 fail("cannot access %s", name);
177 if (exists) {
178 if (S_ISREG(tosb.st_mode)) {
179 /* See if we can open it. This is more reliable than 'access'. */
180 tofd = open(toname, O_CREAT | O_WRONLY, 0666);
181 }
182 if (tofd < 0) {
183 (void) (S_ISDIR(tosb.st_mode) ? rmdir : unlink)(toname);
184 }
185 }
186 if (tofd < 0) {
187 tofd = open(toname, O_CREAT | O_WRONLY, 0666);
188 if (tofd < 0)
189 fail("cannot create %s", toname);
190 }
191
192 bp = buf;
193 while ((cc = read(fromfd, bp, sizeof buf)) > 0)
194 {
195 while ((wc = write(tofd, bp, (unsigned int)cc)) > 0)
196 {
197 if ((cc -= wc) == 0)
198 break;
199 bp += wc;
200 }
201 if (wc < 0)
202 fail("cannot write to %s", toname);
203 }
204 if (cc < 0)
205 fail("cannot read from %s", name);
206
207 if (ftruncate(tofd, sb.st_size) < 0)
208 fail("cannot truncate %s", toname);
209 #if !defined(VMS)
210 if (dotimes)
211 {
212 utb.actime = sb.st_atime;
213 utb.modtime = sb.st_mtime;
214 if (utime(toname, &utb) < 0)
215 fail("cannot set times of %s", toname);
216 }
217 #ifdef HAVE_FCHMOD
218 if (fchmod(tofd, mode) < 0)
219 #else
220 if (chmod(toname, mode) < 0)
221 #endif
222 fail("cannot change mode of %s", toname);
223 #endif
224 if ((owner || group) && fchown(tofd, uid, gid) < 0)
225 fail("cannot change owner of %s", toname);
226
227 /* Must check for delayed (NFS) write errors on close. */
228 if (close(tofd) < 0)
229 fail("cannot write to %s", toname);
230 close(fromfd);
231 #if defined(VMS)
232 if (chmod(toname, (mode & (S_IREAD | S_IWRITE))) < 0)
233 fail("cannot change mode of %s", toname);
234 if (dotimes)
235 {
236 utb.actime = sb.st_atime;
237 utb.modtime = sb.st_mtime;
238 if (utime(toname, &utb) < 0)
239 fail("cannot set times of %s", toname);
240 }
241 #endif
242 }
243
244 static void
245 copydir( char *from, char *to, mode_t mode, char *group, char *owner,
246 int dotimes, uid_t uid, gid_t gid)
247 {
248 int i;
249 DIR *dir;
250 struct dirent *ep;
251 struct stat sb;
252 char *base, *destdir, *direntry, *destentry;
253
254 base = xbasename(from);
255
256 /* create destination directory */
257 destdir = xmalloc((unsigned int)(strlen(to) + 1 + strlen(base) + 1));
258 sprintf(destdir, "%s%s%s", to, _DIRECTORY_SEPARATOR, base);
259 if (mkdirs(destdir, mode) != 0) {
260 fail("cannot make directory %s\n", destdir);
261 return;
262 }
263
264 dir = opendir(from);
265
266 direntry = xmalloc((unsigned int)PATH_MAX);
267 destentry = xmalloc((unsigned int)PATH_MAX);
268
269 while ((ep = readdir(dir)))
270 {
271 if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0)
272 continue;
273
274 sprintf(direntry, "%s/%s", from, ep->d_name);
275 sprintf(destentry, "%s%s%s", destdir, _DIRECTORY_SEPARATOR, ep->d_name);
276
277 if (stat(direntry, &sb) == 0 && S_ISDIR(sb.st_mode))
278 copydir( direntry, destdir, mode, group, owner, dotimes, uid, gid );
279 else
280 copyfile( direntry, destentry, mode, group, owner, dotimes, uid, gid );
281 }
282
283 free(direntry);
284 free(destentry);
285 closedir(dir);
286 }
287
288 int
289 main(int argc, char **argv)
290 {
291 int onlydir, dodir, dolink, dorelsymlink, dotimes, opt, len, lplen, tdlen, bnlen, exists, fromfd, tofd, cc, wc;
292 mode_t mode = 0755;
293 char *linkprefix, *owner, *group, *cp, *cwd, *todir, *toname, *name, *base, *linkname, *bp, buf[BUFSIZ];
294 uid_t uid;
295 gid_t gid;
296 struct stat sb, tosb, fromsb;
297 struct utimbuf utb;
298
299 program = argv[0];
300 cwd = linkname = linkprefix = owner = group = 0;
301 onlydir = dodir = dolink = dorelsymlink = dotimes = lplen = 0;
302
303 while ((opt = getopt(argc, argv, "C:DdlL:Rm:o:g:t")) != EOF) {
304 switch (opt) {
305 case 'C':
306 cwd = optarg;
307 break;
308 case 'D':
309 onlydir = 1;
310 break;
311 case 'd':
312 dodir = 1;
313 break;
314 case 'l':
315 dolink = 1;
316 break;
317 case 'L':
318 linkprefix = optarg;
319 lplen = strlen(linkprefix);
320 dolink = 1;
321 break;
322 case 'R':
323 dolink = dorelsymlink = 1;
324 break;
325 case 'm':
326 mode = strtoul(optarg, &cp, 8);
327 if (mode == 0 && cp == optarg)
328 usage();
329 break;
330 case 'o':
331 owner = optarg;
332 break;
333 case 'g':
334 group = optarg;
335 break;
336 case 't':
337 dotimes = 1;
338 break;
339 default:
340 usage();
341 }
342 }
343
344 argc -= optind;
345 argv += optind;
346 if (argc < 2 - onlydir)
347 usage();
348
349 todir = argv[argc-1];
350 if ((stat(todir, &sb) < 0 || !S_ISDIR(sb.st_mode)) &&
351 mkdirs(todir, 0777) < 0) {
352 fail("cannot make directory %s", todir);
353 }
354 if (onlydir)
355 return 0;
356
357 if (!cwd) {
358 #ifndef NEEDS_GETCWD
359 #ifndef GETCWD_CANT_MALLOC
360 cwd = getcwd(0, PATH_MAX);
361 #else
362 cwd = malloc(PATH_MAX + 1);
363 cwd = getcwd(cwd, PATH_MAX);
364 #endif
365 #else
366 cwd = malloc(PATH_MAX + 1);
367 cwd = getwd(cwd);
368 #endif
369 }
370
371 xchdir(todir);
372 #ifndef NEEDS_GETCWD
373 #ifndef GETCWD_CANT_MALLOC
374 todir = getcwd(0, PATH_MAX);
375 #else
376 todir = malloc(PATH_MAX + 1);
377 todir = getcwd(todir, PATH_MAX);
378 #endif
379 #else
380 todir = malloc(PATH_MAX + 1);
381 todir = getwd(todir);
382 #endif
383 tdlen = strlen(todir);
384 xchdir(cwd);
385 tdlen = strlen(todir);
386
387 uid = owner ? touid(owner) : (uid_t)(-1);
388 gid = group ? togid(group) : (gid_t)(-1);
389
390 while (--argc > 0) {
391 name = *argv++;
392 len = strlen(name);
393 base = xbasename(name);
394 bnlen = strlen(base);
395 toname = xmalloc((unsigned int)(tdlen + 1 + bnlen + 1));
396 sprintf(toname, "%s%s%s", todir, _DIRECTORY_SEPARATOR, base);
397 exists = (lstat(toname, &tosb) == 0);
398
399 if (dodir) {
400 /* -d means create a directory, always */
401 if (exists && !S_ISDIR(tosb.st_mode)) {
402 (void) unlink(toname);
403 exists = 0;
404 }
405 if (!exists && mkdir(toname, mode) < 0)
406 fail("cannot make directory %s", toname);
407 if ((owner || group) && chown(toname, uid, gid) < 0)
408 fail("cannot change owner of %s", toname);
409 } else if (dolink) {
410 if (access(name, R_OK) != 0) {
411 fail("cannot access %s", name);
412 }
413 if (*name == '/') {
414 /* source is absolute pathname, link to it directly */
415 linkname = 0;
416 } else {
417 if (linkprefix) {
418 /* -L implies -l and prefixes names with a $cwd arg. */
419 len += lplen + 1;
420 linkname = xmalloc((unsigned int)(len + 1));
421 sprintf(linkname, "%s/%s", linkprefix, name);
422 } else if (dorelsymlink) {
423 /* Symlink the relative path from todir to source name. */
424 linkname = xmalloc(PATH_MAX);
425
426 if (*todir == '/') {
427 /* todir is absolute: skip over common prefix. */
428 lplen = relatepaths(todir, cwd, linkname);
429 strcpy(linkname + lplen, name);
430 } else {
431 /* todir is named by a relative path: reverse it. */
432 reversepath(todir, name, len, linkname);
433 xchdir(cwd);
434 }
435
436 len = strlen(linkname);
437 }
438 name = linkname;
439 }
440
441 /* Check for a pre-existing symlink with identical content. */
442 if ((exists && (!S_ISLNK(tosb.st_mode) ||
443 readlink(toname, buf, sizeof buf) != len ||
444 strncmp(buf, name, (unsigned int)len) != 0)) ||
445 ((stat(name, &fromsb) == 0) &&
446 (fromsb.st_mtime > tosb.st_mtime))) {
447 (void) (S_ISDIR(tosb.st_mode) ? rmdir : unlink)(toname);
448 exists = 0;
449 }
450 if (!exists && symlink(name, toname) < 0)
451 fail("cannot make symbolic link %s", toname);
452 #ifdef HAVE_LCHOWN
453 if ((owner || group) && lchown(toname, uid, gid) < 0)
454 fail("cannot change owner of %s", toname);
455 #endif
456
457 if (linkname) {
458 free(linkname);
459 linkname = 0;
460 }
461 } else {
462 /* Copy from name to toname, which might be the same file. */
463 if( stat(name, &sb) == 0 && S_IFDIR & sb.st_mode )
464 {
465 /* then is directory: must explicitly create destination dir */
466 /* and manually copy files over */
467 copydir( name, todir, mode, group, owner, dotimes, uid, gid );
468 }
469 else
470 {
471 copyfile(name, toname, mode, group, owner, dotimes, uid, gid);
472 }
473 }
474
475 free(toname);
476 }
477
478 free(cwd);
479 free(todir);
480 return 0;
481 }

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