2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1992 Keith Muller.
5 * Copyright (c) 1992, 1993
6 * The Regents of the University of California. All rights reserved.
8 * This code is derived from software contributed to Berkeley by
9 * Keith Muller of the University of California, San Diego.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 static char sccsid[] = "@(#)sel_subs.c 8.1 (Berkeley) 5/31/93";
41 #include <sys/cdefs.h>
42 __FBSDID("$FreeBSD$");
44 #include <sys/types.h>
60 static int str_sec(const char *, time_t *);
61 static int usr_match(ARCHD *);
62 static int grp_match(ARCHD *);
63 static int trng_match(ARCHD *);
65 static TIME_RNG *trhead = NULL; /* time range list head */
66 static TIME_RNG *trtail = NULL; /* time range list tail */
67 static USRT **usrtb = NULL; /* user selection table */
68 static GRPT **grptb = NULL; /* group selection table */
71 * Routines for selection of archive members
76 * check if this file matches a specified uid, gid or time range
78 * 0 if this archive member should be processed, 1 if it should be skipped
84 if (((usrtb != NULL) && usr_match(arcn)) ||
85 ((grptb != NULL) && grp_match(arcn)) ||
86 ((trhead != NULL) && trng_match(arcn)))
92 * User/group selection routines
94 * Routines to handle user selection of files based on the file uid/gid. To
95 * add an entry, the user supplies either the name or the uid/gid starting with
96 * a # on the command line. A \# will escape the #.
101 * add a user match to the user match hash table
103 * 0 if added ok, -1 otherwise;
115 * create the table if it doesn't exist
117 if ((str == NULL) || (*str == '\0'))
119 if ((usrtb == NULL) &&
120 ((usrtb = (USRT **)calloc(USR_TB_SZ, sizeof(USRT *))) == NULL)) {
121 paxwarn(1, "Unable to allocate memory for user selection table");
126 * figure out user spec
130 * it is a user name, \# escapes # as first char in user name
132 if ((str[0] == '\\') && (str[1] == '#'))
134 if ((pw = getpwnam(str)) == NULL) {
135 paxwarn(1, "Unable to find uid for user: %s", str);
138 uid = (uid_t)pw->pw_uid;
140 uid = (uid_t)strtoul(str+1, NULL, 10);
144 * hash it and go down the hash chain (if any) looking for it
146 indx = ((unsigned)uid) % USR_TB_SZ;
147 if ((pt = usrtb[indx]) != NULL) {
156 * uid is not yet in the table, add it to the front of the chain
158 if ((pt = (USRT *)malloc(sizeof(USRT))) != NULL) {
160 pt->fow = usrtb[indx];
164 paxwarn(1, "User selection table out of memory");
170 * check if this files uid matches a selected uid.
172 * 0 if this archive member should be processed, 1 if it should be skipped
176 usr_match(ARCHD *arcn)
181 * hash and look for it in the table
183 pt = usrtb[((unsigned)arcn->sb.st_uid) % USR_TB_SZ];
185 if (pt->uid == arcn->sb.st_uid)
198 * add a group match to the group match hash table
200 * 0 if added ok, -1 otherwise;
212 * create the table if it doesn't exist
214 if ((str == NULL) || (*str == '\0'))
216 if ((grptb == NULL) &&
217 ((grptb = (GRPT **)calloc(GRP_TB_SZ, sizeof(GRPT *))) == NULL)) {
218 paxwarn(1, "Unable to allocate memory fo group selection table");
223 * figure out user spec
227 * it is a group name, \# escapes # as first char in group name
229 if ((str[0] == '\\') && (str[1] == '#'))
231 if ((gr = getgrnam(str)) == NULL) {
232 paxwarn(1,"Cannot determine gid for group name: %s", str);
237 gid = (gid_t)strtoul(str+1, NULL, 10);
241 * hash it and go down the hash chain (if any) looking for it
243 indx = ((unsigned)gid) % GRP_TB_SZ;
244 if ((pt = grptb[indx]) != NULL) {
253 * gid not in the table, add it to the front of the chain
255 if ((pt = (GRPT *)malloc(sizeof(GRPT))) != NULL) {
257 pt->fow = grptb[indx];
261 paxwarn(1, "Group selection table out of memory");
267 * check if this files gid matches a selected gid.
269 * 0 if this archive member should be processed, 1 if it should be skipped
273 grp_match(ARCHD *arcn)
278 * hash and look for it in the table
280 pt = grptb[((unsigned)arcn->sb.st_gid) % GRP_TB_SZ];
282 if (pt->gid == arcn->sb.st_gid)
294 * Time range selection routines
296 * Routines to handle user selection of files based on the modification and/or
297 * inode change time falling within a specified time range (the non-standard
298 * -T flag). The user may specify any number of different file time ranges.
299 * Time ranges are checked one at a time until a match is found (if at all).
300 * If the file has a mtime (and/or ctime) which lies within one of the time
301 * ranges, the file is selected. Time ranges may have a lower and/or an upper
302 * value. These ranges are inclusive. When no time ranges are supplied to pax
303 * with the -T option, all members in the archive will be selected by the time
304 * range routines. When only a lower range is supplied, only files with a
305 * mtime (and/or ctime) equal to or younger are selected. When only an upper
306 * range is supplied, only files with a mtime (and/or ctime) equal to or older
307 * are selected. When the lower time range is equal to the upper time range,
308 * only files with a mtime (or ctime) of exactly that time are selected.
313 * add a time range match to the time range list.
314 * This is a non-standard pax option. Lower and upper ranges are in the
315 * format: [[[[[cc]yy]mm]dd]HH]MM[.SS] and are comma separated.
316 * Time ranges are based on current time, so 1234 would specify a time of
319 * 0 if the time range was added to the list, -1 otherwise
332 * throw out the badly formed time ranges
334 if ((str == NULL) || (*str == '\0')) {
335 paxwarn(1, "Empty time range string");
340 * locate optional flags suffix /{cm}.
342 if ((flgpt = strrchr(str, '/')) != NULL)
345 for (stpt = str; *stpt != '\0'; ++stpt) {
346 if ((*stpt >= '0') && (*stpt <= '9'))
348 if ((*stpt == ',') && (up_pt == NULL)) {
356 * allow only one dot per range (secs)
358 if ((*stpt == '.') && (!dot)) {
362 paxwarn(1, "Improperly specified time range: %s", str);
367 * allocate space for the time range and store the limits
369 if ((pt = (TIME_RNG *)malloc(sizeof(TIME_RNG))) == NULL) {
370 paxwarn(1, "Unable to allocate memory for time range");
375 * by default we only will check file mtime, but the user can specify
376 * mtime, ctime (inode change time) or both.
378 if ((flgpt == NULL) || (*flgpt == '\0'))
382 while (*flgpt != '\0') {
393 paxwarn(1, "Bad option %c with time range %s",
403 * start off with the current time
405 pt->low_time = pt->high_time = time(NULL);
410 if (str_sec(str, &(pt->low_time)) < 0) {
411 paxwarn(1, "Illegal lower time range %s", str);
418 if ((up_pt != NULL) && (*up_pt != '\0')) {
422 if (str_sec(up_pt, &(pt->high_time)) < 0) {
423 paxwarn(1, "Illegal upper time range %s", up_pt);
430 * check that the upper and lower do not overlap
432 if (pt->flgs & HASLOW) {
433 if (pt->low_time > pt->high_time) {
434 paxwarn(1, "Upper %s and lower %s time overlap",
443 if (trhead == NULL) {
444 trtail = trhead = pt;
452 paxwarn(1, "Time range format is: [[[[[cc]yy]mm]dd]HH]MM[.SS][/[c][m]]");
458 * check if this files mtime/ctime falls within any supplied time range.
460 * 0 if this archive member should be processed, 1 if it should be skipped
464 trng_match(ARCHD *arcn)
469 * have to search down the list one at a time looking for a match.
470 * remember time range limits are inclusive.
474 switch(pt->flgs & CMPBOTH) {
477 * user wants both mtime and ctime checked for this
480 if (((pt->flgs & HASLOW) &&
481 (arcn->sb.st_mtime < pt->low_time) &&
482 (arcn->sb.st_ctime < pt->low_time)) ||
483 ((pt->flgs & HASHIGH) &&
484 (arcn->sb.st_mtime > pt->high_time) &&
485 (arcn->sb.st_ctime > pt->high_time))) {
492 * user wants only ctime checked for this time range
494 if (((pt->flgs & HASLOW) &&
495 (arcn->sb.st_ctime < pt->low_time)) ||
496 ((pt->flgs & HASHIGH) &&
497 (arcn->sb.st_ctime > pt->high_time))) {
505 * user wants only mtime checked for this time range
507 if (((pt->flgs & HASLOW) &&
508 (arcn->sb.st_mtime < pt->low_time)) ||
509 ((pt->flgs & HASHIGH) &&
510 (arcn->sb.st_mtime > pt->high_time))) {
526 * Convert a time string in the format of [[[[[cc]yy]mm]dd]HH]MM[.SS] to
527 * seconds UTC. Tval already has current time loaded into it at entry.
529 * 0 if converted ok, -1 otherwise
533 str_sec(const char *p, time_t *tval)
544 for (t = p, dot = NULL; *t; ++t) {
545 if (isdigit((unsigned char)*t))
547 if (*t == '.' && dot == NULL) {
554 lt = localtime(tval);
556 if (dot != NULL) { /* .SS */
557 if (strlen(++dot) != 2)
559 lt->tm_sec = ATOI2(dot);
569 lt->tm_year = (bigyear * 100) - 1900;
574 lt->tm_year += ATOI2(p);
576 lt->tm_year = ATOI2(p);
577 if (lt->tm_year < 69) /* hack for 2000 ;-} */
578 lt->tm_year += (2000 - 1900);
582 lt->tm_mon = ATOI2(p);
583 if ((lt->tm_mon > 12) || !lt->tm_mon)
585 --lt->tm_mon; /* time struct is 0 - 11 */
588 lt->tm_mday = ATOI2(p);
589 if ((lt->tm_mday > 31) || !lt->tm_mday)
593 lt->tm_hour = ATOI2(p);
594 if (lt->tm_hour > 23)
598 lt->tm_min = ATOI2(p);
606 /* convert broken-down time to UTC clock time seconds */
607 if ((*tval = mktime(lt)) == -1)