2 * Copyright (c) 1992 Keith Muller.
3 * Copyright (c) 1992, 1993
4 * The Regents of the University of California. All rights reserved.
6 * This code is derived from software contributed to Berkeley by
7 * Keith Muller of the University of California, San Diego.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 static char sccsid[] = "@(#)sel_subs.c 8.1 (Berkeley) 5/31/93";
39 #include <sys/cdefs.h>
40 __FBSDID("$FreeBSD$");
42 #include <sys/types.h>
55 static int str_sec(char *, time_t *);
56 static int usr_match(ARCHD *);
57 static int grp_match(ARCHD *);
58 static int trng_match(ARCHD *);
60 static TIME_RNG *trhead = NULL; /* time range list head */
61 static TIME_RNG *trtail = NULL; /* time range list tail */
62 static USRT **usrtb = NULL; /* user selection table */
63 static GRPT **grptb = NULL; /* group selection table */
66 * Routines for selection of archive members
71 * check if this file matches a specified uid, gid or time range
73 * 0 if this archive member should be processed, 1 if it should be skipped
79 if (((usrtb != NULL) && usr_match(arcn)) ||
80 ((grptb != NULL) && grp_match(arcn)) ||
81 ((trhead != NULL) && trng_match(arcn)))
87 * User/group selection routines
89 * Routines to handle user selection of files based on the file uid/gid. To
90 * add an entry, the user supplies either then name or the uid/gid starting with
91 * a # on the command line. A \# will escape the #.
96 * add a user match to the user match hash table
98 * 0 if added ok, -1 otherwise;
110 * create the table if it doesn't exist
112 if ((str == NULL) || (*str == '\0'))
114 if ((usrtb == NULL) &&
115 ((usrtb = (USRT **)calloc(USR_TB_SZ, sizeof(USRT *))) == NULL)) {
116 paxwarn(1, "Unable to allocate memory for user selection table");
121 * figure out user spec
125 * it is a user name, \# escapes # as first char in user name
127 if ((str[0] == '\\') && (str[1] == '#'))
129 if ((pw = getpwnam(str)) == NULL) {
130 paxwarn(1, "Unable to find uid for user: %s", str);
133 uid = (uid_t)pw->pw_uid;
136 uid = (uid_t)atoi(str+1);
138 uid = (uid_t)strtoul(str+1, NULL, 10);
143 * hash it and go down the hash chain (if any) looking for it
145 indx = ((unsigned)uid) % USR_TB_SZ;
146 if ((pt = usrtb[indx]) != NULL) {
155 * uid is not yet in the table, add it to the front of the chain
157 if ((pt = (USRT *)malloc(sizeof(USRT))) != NULL) {
159 pt->fow = usrtb[indx];
163 paxwarn(1, "User selection table out of memory");
169 * check if this files uid matches a selected uid.
171 * 0 if this archive member should be processed, 1 if it should be skipped
175 usr_match(ARCHD *arcn)
180 * hash and look for it in the table
182 pt = usrtb[((unsigned)arcn->sb.st_uid) % USR_TB_SZ];
184 if (pt->uid == arcn->sb.st_uid)
197 * add a group match to the group match hash table
199 * 0 if added ok, -1 otherwise;
211 * create the table if it doesn't exist
213 if ((str == NULL) || (*str == '\0'))
215 if ((grptb == NULL) &&
216 ((grptb = (GRPT **)calloc(GRP_TB_SZ, sizeof(GRPT *))) == NULL)) {
217 paxwarn(1, "Unable to allocate memory fo group selection table");
222 * figure out user spec
226 * it is a group name, \# escapes # as first char in group name
228 if ((str[0] == '\\') && (str[1] == '#'))
230 if ((gr = getgrnam(str)) == NULL) {
231 paxwarn(1,"Cannot determine gid for group name: %s", str);
237 gid = (gid_t)atoi(str+1);
239 gid = (gid_t)strtoul(str+1, NULL, 10);
244 * hash it and go down the hash chain (if any) looking for it
246 indx = ((unsigned)gid) % GRP_TB_SZ;
247 if ((pt = grptb[indx]) != NULL) {
256 * gid not in the table, add it to the front of the chain
258 if ((pt = (GRPT *)malloc(sizeof(GRPT))) != NULL) {
260 pt->fow = grptb[indx];
264 paxwarn(1, "Group selection table out of memory");
270 * check if this files gid matches a selected gid.
272 * 0 if this archive member should be processed, 1 if it should be skipped
276 grp_match(ARCHD *arcn)
281 * hash and look for it in the table
283 pt = grptb[((unsigned)arcn->sb.st_gid) % GRP_TB_SZ];
285 if (pt->gid == arcn->sb.st_gid)
297 * Time range selection routines
299 * Routines to handle user selection of files based on the modification and/or
300 * inode change time falling within a specified time range (the non-standard
301 * -T flag). The user may specify any number of different file time ranges.
302 * Time ranges are checked one at a time until a match is found (if at all).
303 * If the file has a mtime (and/or ctime) which lies within one of the time
304 * ranges, the file is selected. Time ranges may have a lower and/or an upper
305 * value. These ranges are inclusive. When no time ranges are supplied to pax
306 * with the -T option, all members in the archive will be selected by the time
307 * range routines. When only a lower range is supplied, only files with a
308 * mtime (and/or ctime) equal to or younger are selected. When only an upper
309 * range is supplied, only files with a mtime (and/or ctime) equal to or older
310 * are selected. When the lower time range is equal to the upper time range,
311 * only files with a mtime (or ctime) of exactly that time are selected.
316 * add a time range match to the time range list.
317 * This is a non-standard pax option. Lower and upper ranges are in the
318 * format: [yy[mm[dd[hh]]]]mm[.ss] and are comma separated.
319 * Time ranges are based on current time, so 1234 would specify a time of
322 * 0 if the time range was added to the list, -1 otherwise
335 * throw out the badly formed time ranges
337 if ((str == NULL) || (*str == '\0')) {
338 paxwarn(1, "Empty time range string");
343 * locate optional flags suffix /{cm}.
345 if ((flgpt = strrchr(str, '/')) != NULL)
348 for (stpt = str; *stpt != '\0'; ++stpt) {
349 if ((*stpt >= '0') && (*stpt <= '9'))
351 if ((*stpt == ',') && (up_pt == NULL)) {
359 * allow only one dot per range (secs)
361 if ((*stpt == '.') && (!dot)) {
365 paxwarn(1, "Improperly specified time range: %s", str);
370 * allocate space for the time range and store the limits
372 if ((pt = (TIME_RNG *)malloc(sizeof(TIME_RNG))) == NULL) {
373 paxwarn(1, "Unable to allocate memory for time range");
378 * by default we only will check file mtime, but the user can specify
379 * mtime, ctime (inode change time) or both.
381 if ((flgpt == NULL) || (*flgpt == '\0'))
385 while (*flgpt != '\0') {
396 paxwarn(1, "Bad option %c with time range %s",
406 * start off with the current time
408 pt->low_time = pt->high_time = time(NULL);
413 if (str_sec(str, &(pt->low_time)) < 0) {
414 paxwarn(1, "Illegal lower time range %s", str);
421 if ((up_pt != NULL) && (*up_pt != '\0')) {
425 if (str_sec(up_pt, &(pt->high_time)) < 0) {
426 paxwarn(1, "Illegal upper time range %s", up_pt);
433 * check that the upper and lower do not overlap
435 if (pt->flgs & HASLOW) {
436 if (pt->low_time > pt->high_time) {
437 paxwarn(1, "Upper %s and lower %s time overlap",
446 if (trhead == NULL) {
447 trtail = trhead = pt;
455 paxwarn(1, "Time range format is: [yy[mm[dd[hh]]]]mm[.ss][/[c][m]]");
461 * check if this files mtime/ctime falls within any supplied time range.
463 * 0 if this archive member should be processed, 1 if it should be skipped
467 trng_match(ARCHD *arcn)
472 * have to search down the list one at a time looking for a match.
473 * remember time range limits are inclusive.
477 switch(pt->flgs & CMPBOTH) {
480 * user wants both mtime and ctime checked for this
483 if (((pt->flgs & HASLOW) &&
484 (arcn->sb.st_mtime < pt->low_time) &&
485 (arcn->sb.st_ctime < pt->low_time)) ||
486 ((pt->flgs & HASHIGH) &&
487 (arcn->sb.st_mtime > pt->high_time) &&
488 (arcn->sb.st_ctime > pt->high_time))) {
495 * user wants only ctime checked for this time range
497 if (((pt->flgs & HASLOW) &&
498 (arcn->sb.st_ctime < pt->low_time)) ||
499 ((pt->flgs & HASHIGH) &&
500 (arcn->sb.st_ctime > pt->high_time))) {
508 * user wants only mtime checked for this time range
510 if (((pt->flgs & HASLOW) &&
511 (arcn->sb.st_mtime < pt->low_time)) ||
512 ((pt->flgs & HASHIGH) &&
513 (arcn->sb.st_mtime > pt->high_time))) {
529 * Convert a time string in the format of [yy[mm[dd[hh]]]]mm[.ss] to gmt
530 * seconds. Tval already has current time loaded into it at entry.
532 * 0 if converted ok, -1 otherwise
536 str_sec(char *str, time_t *tval)
541 lt = localtime(tval);
542 if ((dot = strchr(str, '.')) != NULL) {
547 if (strlen(dot) != 2)
549 if ((lt->tm_sec = ATOI2(dot)) > 61)
554 switch (strlen(str)) {
558 * watch out for year 2000
560 if ((lt->tm_year = ATOI2(str)) < 69)
567 * watch out months are from 0 - 11 internally
569 if ((lt->tm_mon = ATOI2(str)) > 12)
578 if ((lt->tm_mday = ATOI2(str)) > 31)
586 if ((lt->tm_hour = ATOI2(str)) > 23)
594 if ((lt->tm_min = ATOI2(str)) > 59)
601 * convert broken-down time to GMT clock time seconds
603 if ((*tval = mktime(lt)) == -1)