1 /* $OpenBSD: sel_subs.c,v 1.18 2004/04/16 22:50:23 deraadt Exp $ */
2 /* $NetBSD: sel_subs.c,v 1.5 1995/03/21 09:07:42 cgd Exp $ */
5 * Copyright (c) 1992 Keith Muller.
6 * Copyright (c) 1992, 1993
7 * The Regents of the University of California. All rights reserved.
9 * This code is derived from software contributed to Berkeley by
10 * Keith Muller of the University of California, San Diego.
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 static const char sccsid[] = "@(#)sel_subs.c 8.1 (Berkeley) 5/31/93";
41 static const char rcsid[] = "$OpenBSD: sel_subs.c,v 1.18 2004/04/16 22:50:23 deraadt Exp $";
45 #include <sys/types.h>
49 #include <sys/param.h>
62 static int str_sec(const char *, time_t *);
63 static int usr_match(ARCHD *);
64 static int grp_match(ARCHD *);
65 static int trng_match(ARCHD *);
67 static TIME_RNG *trhead = NULL; /* time range list head */
68 static TIME_RNG *trtail = NULL; /* time range list tail */
69 static USRT **usrtb = NULL; /* user selection table */
70 static GRPT **grptb = NULL; /* group selection table */
73 * Routines for selection of archive members
78 * check if this file matches a specified uid, gid or time range
80 * 0 if this archive member should be processed, 1 if it should be skipped
86 if (((usrtb != NULL) && usr_match(arcn)) ||
87 ((grptb != NULL) && grp_match(arcn)) ||
88 ((trhead != NULL) && trng_match(arcn)))
94 * User/group selection routines
96 * Routines to handle user selection of files based on the file uid/gid. To
97 * add an entry, the user supplies either the name or the uid/gid starting with
98 * a # on the command line. A \# will escape the #.
103 * add a user match to the user match hash table
105 * 0 if added ok, -1 otherwise;
117 * create the table if it doesn't exist
119 if ((str == NULL) || (*str == '\0'))
121 if ((usrtb == NULL) &&
122 ((usrtb = (USRT **)calloc(USR_TB_SZ, sizeof(USRT *))) == NULL)) {
123 paxwarn(1, "Unable to allocate memory for user selection table");
128 * figure out user spec
132 * it is a user name, \# escapes # as first char in user name
134 if ((str[0] == '\\') && (str[1] == '#'))
136 if ((pw = getpwnam(str)) == NULL) {
137 paxwarn(1, "Unable to find uid for user: %s", str);
140 uid = (uid_t)pw->pw_uid;
142 uid = (uid_t)strtoul(str+1, NULL, 10);
146 * hash it and go down the hash chain (if any) looking for it
148 indx = ((unsigned)uid) % USR_TB_SZ;
149 if ((pt = usrtb[indx]) != NULL) {
158 * uid is not yet in the table, add it to the front of the chain
160 if ((pt = (USRT *)malloc(sizeof(USRT))) != NULL) {
162 pt->fow = usrtb[indx];
166 paxwarn(1, "User selection table out of memory");
172 * check if this files uid matches a selected uid.
174 * 0 if this archive member should be processed, 1 if it should be skipped
178 usr_match(ARCHD *arcn)
183 * hash and look for it in the table
185 pt = usrtb[((unsigned)arcn->sb.st_uid) % USR_TB_SZ];
187 if (pt->uid == arcn->sb.st_uid)
200 * add a group match to the group match hash table
202 * 0 if added ok, -1 otherwise;
214 * create the table if it doesn't exist
216 if ((str == NULL) || (*str == '\0'))
218 if ((grptb == NULL) &&
219 ((grptb = (GRPT **)calloc(GRP_TB_SZ, sizeof(GRPT *))) == NULL)) {
220 paxwarn(1, "Unable to allocate memory fo group selection table");
225 * figure out user spec
229 * it is a group name, \# escapes # as first char in group name
231 if ((str[0] == '\\') && (str[1] == '#'))
233 if ((gr = getgrnam(str)) == NULL) {
234 paxwarn(1,"Cannot determine gid for group name: %s", str);
237 gid = (gid_t)gr->gr_gid;
239 gid = (gid_t)strtoul(str+1, NULL, 10);
243 * hash it and go down the hash chain (if any) looking for it
245 indx = ((unsigned)gid) % GRP_TB_SZ;
246 if ((pt = grptb[indx]) != NULL) {
255 * gid not in the table, add it to the front of the chain
257 if ((pt = (GRPT *)malloc(sizeof(GRPT))) != NULL) {
259 pt->fow = grptb[indx];
263 paxwarn(1, "Group selection table out of memory");
269 * check if this files gid matches a selected gid.
271 * 0 if this archive member should be processed, 1 if it should be skipped
275 grp_match(ARCHD *arcn)
280 * hash and look for it in the table
282 pt = grptb[((unsigned)arcn->sb.st_gid) % GRP_TB_SZ];
284 if (pt->gid == arcn->sb.st_gid)
296 * Time range selection routines
298 * Routines to handle user selection of files based on the modification and/or
299 * inode change time falling within a specified time range (the non-standard
300 * -T flag). The user may specify any number of different file time ranges.
301 * Time ranges are checked one at a time until a match is found (if at all).
302 * If the file has a mtime (and/or ctime) which lies within one of the time
303 * ranges, the file is selected. Time ranges may have a lower and/or a upper
304 * value. These ranges are inclusive. When no time ranges are supplied to pax
305 * with the -T option, all members in the archive will be selected by the time
306 * range routines. When only a lower range is supplied, only files with a
307 * mtime (and/or ctime) equal to or younger are selected. When only a upper
308 * range is supplied, only files with a mtime (and/or ctime) equal to or older
309 * are selected. When the lower time range is equal to the upper time range,
310 * only files with a mtime (or ctime) of exactly that time are selected.
315 * add a time range match to the time range list.
316 * This is a non-standard pax option. Lower and upper ranges are in the
317 * format: [[[[[cc]yy]mm]dd]HH]MM[.SS] and are comma separated.
318 * Time ranges are based on current time, so 1234 would specify a time of
321 * 0 if the time range was added to the list, -1 otherwise
334 * throw out the badly formed time ranges
336 if ((str == NULL) || (*str == '\0')) {
337 paxwarn(1, "Empty time range string");
342 * locate optional flags suffix /{cm}.
344 if ((flgpt = strrchr(str, '/')) != NULL)
347 for (stpt = str; *stpt != '\0'; ++stpt) {
348 if ((*stpt >= '0') && (*stpt <= '9'))
350 if ((*stpt == ',') && (up_pt == NULL)) {
358 * allow only one dot per range (secs)
360 if ((*stpt == '.') && (!dot)) {
364 paxwarn(1, "Improperly specified time range: %s", str);
369 * allocate space for the time range and store the limits
371 if ((pt = (TIME_RNG *)malloc(sizeof(TIME_RNG))) == NULL) {
372 paxwarn(1, "Unable to allocate memory for time range");
377 * by default we only will check file mtime, but user can specify
378 * mtime, ctime (inode change time) or both.
380 if ((flgpt == NULL) || (*flgpt == '\0'))
384 while (*flgpt != '\0') {
395 paxwarn(1, "Bad option %c with time range %s",
404 * start off with the current time
406 pt->low_time = pt->high_time = time(NULL);
411 if (str_sec(str, &(pt->low_time)) < 0) {
412 paxwarn(1, "Illegal lower time range %s", str);
413 (void)free((char *)pt);
419 if ((up_pt != NULL) && (*up_pt != '\0')) {
423 if (str_sec(up_pt, &(pt->high_time)) < 0) {
424 paxwarn(1, "Illegal upper time range %s", up_pt);
425 (void)free((char *)pt);
431 * check that the upper and lower do not overlap
433 if (pt->flgs & HASLOW) {
434 if (pt->low_time > pt->high_time) {
435 paxwarn(1, "Upper %s and lower %s time overlap",
437 (void)free((char *)pt);
444 if (trhead == NULL) {
445 trtail = trhead = pt;
453 paxwarn(1, "Time range format is: [[[[[cc]yy]mm]dd]HH]MM[.SS][/[c][m]]");
459 * check if this files mtime/ctime falls within any supplied time range.
461 * 0 if this archive member should be processed, 1 if it should be skipped
465 trng_match(ARCHD *arcn)
470 * have to search down the list one at a time looking for a match.
471 * remember time range limits are inclusive.
475 switch (pt->flgs & CMPBOTH) {
478 * user wants both mtime and ctime checked for this
481 if (((pt->flgs & HASLOW) &&
482 (arcn->sb.st_mtime < pt->low_time) &&
483 (arcn->sb.st_ctime < pt->low_time)) ||
484 ((pt->flgs & HASHIGH) &&
485 (arcn->sb.st_mtime > pt->high_time) &&
486 (arcn->sb.st_ctime > pt->high_time))) {
493 * user wants only ctime checked for this time range
495 if (((pt->flgs & HASLOW) &&
496 (arcn->sb.st_ctime < pt->low_time)) ||
497 ((pt->flgs & HASHIGH) &&
498 (arcn->sb.st_ctime > pt->high_time))) {
506 * user wants only mtime checked for this time range
508 if (((pt->flgs & HASLOW) &&
509 (arcn->sb.st_mtime < pt->low_time)) ||
510 ((pt->flgs & HASHIGH) &&
511 (arcn->sb.st_mtime > pt->high_time))) {
527 * Convert a time string in the format of [[[[[cc]yy]mm]dd]HH]MM[.SS] to
528 * seconds UTC. Tval already has current time loaded into it at entry.
530 * 0 if converted ok, -1 otherwise
534 str_sec(const char *p, time_t *tval)
545 for (t = p, dot = NULL; *t; ++t) {
548 if (*t == '.' && dot == NULL) {
555 lt = localtime(tval);
557 if (dot != NULL) { /* .SS */
558 if (strlen(++dot) != 2)
560 lt->tm_sec = ATOI2(dot);
570 lt->tm_year = (bigyear * 100) - TM_YEAR_BASE;
575 lt->tm_year += ATOI2(p);
577 lt->tm_year = ATOI2(p);
578 if (lt->tm_year < 69) /* hack for 2000 ;-} */
579 lt->tm_year += (2000 - TM_YEAR_BASE);
581 lt->tm_year += (1900 - TM_YEAR_BASE);
585 lt->tm_mon = ATOI2(p);
586 if ((lt->tm_mon > 12) || !lt->tm_mon)
588 --lt->tm_mon; /* time struct is 0 - 11 */
591 lt->tm_mday = ATOI2(p);
592 if ((lt->tm_mday > 31) || !lt->tm_mday)
596 lt->tm_hour = ATOI2(p);
597 if (lt->tm_hour > 23)
601 lt->tm_min = ATOI2(p);
609 /* convert broken-down time to UTC clock time seconds */
610 if ((*tval = mktime(lt)) == -1)