1 /* $OpenBSD: sel_subs.c,v 1.7 1997/08/17 23:05:09 millert 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. All advertising materials mentioning features or use of this software
21 * must display the following acknowledgement:
22 * This product includes software developed by the University of
23 * California, Berkeley and its contributors.
24 * 4. Neither the name of the University nor the names of its contributors
25 * may be used to endorse or promote products derived from this software
26 * without specific prior written permission.
28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
43 static char sccsid[] = "@(#)sel_subs.c 8.1 (Berkeley) 5/31/93";
45 static char rcsid[] = "$OpenBSD: sel_subs.c,v 1.7 1997/08/17 23:05:09 millert Exp $";
49 #include <sys/types.h>
52 #include <sys/param.h>
63 static int str_sec __P((register char *, time_t *));
64 static int usr_match __P((register ARCHD *));
65 static int grp_match __P((register ARCHD *));
66 static int trng_match __P((register ARCHD *));
68 static TIME_RNG *trhead = NULL; /* time range list head */
69 static TIME_RNG *trtail = NULL; /* time range list tail */
70 static USRT **usrtb = NULL; /* user selection table */
71 static GRPT **grptb = NULL; /* group selection table */
74 * Routines for selection of archive members
79 * check if this file matches a specfied uid, gid or time range
81 * 0 if this archive member should be processed, 1 if it should be skipped
86 sel_chk(register ARCHD *arcn)
93 if (((usrtb != NULL) && usr_match(arcn)) ||
94 ((grptb != NULL) && grp_match(arcn)) ||
95 ((trhead != NULL) && trng_match(arcn)))
101 * User/group selection routines
103 * Routines to handle user selection of files based on the file uid/gid. To
104 * add an entry, the user supplies either then name or the uid/gid starting with
105 * a # on the command line. A \# will eascape the #.
110 * add a user match to the user match hash table
112 * 0 if added ok, -1 otherwise;
117 usr_add(register char *str)
126 register struct passwd *pw;
130 * create the table if it doesn't exist
132 if ((str == NULL) || (*str == '\0'))
134 if ((usrtb == NULL) &&
135 ((usrtb = (USRT **)calloc(USR_TB_SZ, sizeof(USRT *))) == NULL)) {
136 paxwarn(1, "Unable to allocate memory for user selection table");
141 * figure out user spec
145 * it is a user name, \# escapes # as first char in user name
147 if ((str[0] == '\\') && (str[1] == '#'))
149 if ((pw = getpwnam(str)) == NULL) {
150 paxwarn(1, "Unable to find uid for user: %s", str);
153 uid = (uid_t)pw->pw_uid;
156 uid = (uid_t)atoi(str+1);
158 uid = (uid_t)strtoul(str+1, NULL, 10);
163 * hash it and go down the hash chain (if any) looking for it
165 indx = ((unsigned)uid) % USR_TB_SZ;
166 if ((pt = usrtb[indx]) != NULL) {
175 * uid is not yet in the table, add it to the front of the chain
177 if ((pt = (USRT *)malloc(sizeof(USRT))) != NULL) {
179 pt->fow = usrtb[indx];
183 paxwarn(1, "User selection table out of memory");
189 * check if this files uid matches a selected uid.
191 * 0 if this archive member should be processed, 1 if it should be skipped
196 usr_match(register ARCHD *arcn)
200 register ARCHD *arcn;
206 * hash and look for it in the table
208 pt = usrtb[((unsigned)arcn->sb.st_uid) % USR_TB_SZ];
210 if (pt->uid == arcn->sb.st_uid)
223 * add a group match to the group match hash table
225 * 0 if added ok, -1 otherwise;
230 grp_add(register char *str)
239 register struct group *gr;
243 * create the table if it doesn't exist
245 if ((str == NULL) || (*str == '\0'))
247 if ((grptb == NULL) &&
248 ((grptb = (GRPT **)calloc(GRP_TB_SZ, sizeof(GRPT *))) == NULL)) {
249 paxwarn(1, "Unable to allocate memory fo group selection table");
254 * figure out user spec
258 * it is a group name, \# escapes # as first char in group name
260 if ((str[0] == '\\') && (str[1] == '#'))
262 if ((gr = getgrnam(str)) == NULL) {
263 paxwarn(1,"Cannot determine gid for group name: %s", str);
266 gid = (gid_t)gr->gr_gid;
269 gid = (gid_t)atoi(str+1);
271 gid = (gid_t)strtoul(str+1, NULL, 10);
276 * hash it and go down the hash chain (if any) looking for it
278 indx = ((unsigned)gid) % GRP_TB_SZ;
279 if ((pt = grptb[indx]) != NULL) {
288 * gid not in the table, add it to the front of the chain
290 if ((pt = (GRPT *)malloc(sizeof(GRPT))) != NULL) {
292 pt->fow = grptb[indx];
296 paxwarn(1, "Group selection table out of memory");
302 * check if this files gid matches a selected gid.
304 * 0 if this archive member should be processed, 1 if it should be skipped
309 grp_match(register ARCHD *arcn)
313 register ARCHD *arcn;
319 * hash and look for it in the table
321 pt = grptb[((unsigned)arcn->sb.st_gid) % GRP_TB_SZ];
323 if (pt->gid == arcn->sb.st_gid)
335 * Time range selection routines
337 * Routines to handle user selection of files based on the modification and/or
338 * inode change time falling within a specified time range (the non-standard
339 * -T flag). The user may specify any number of different file time ranges.
340 * Time ranges are checked one at a time until a match is found (if at all).
341 * If the file has a mtime (and/or ctime) which lies within one of the time
342 * ranges, the file is selected. Time ranges may have a lower and/or a upper
343 * value. These ranges are inclusive. When no time ranges are supplied to pax
344 * with the -T option, all members in the archive will be selected by the time
345 * range routines. When only a lower range is supplied, only files with a
346 * mtime (and/or ctime) equal to or younger are selected. When only a upper
347 * range is supplied, only files with a mtime (and/or ctime) equal to or older
348 * are selected. When the lower time range is equal to the upper time range,
349 * only files with a mtime (or ctime) of exactly that time are selected.
354 * add a time range match to the time range list.
355 * This is a non-standard pax option. Lower and upper ranges are in the
356 * format: [yy[mm[dd[hh]]]]mm[.ss] and are comma separated.
357 * Time ranges are based on current time, so 1234 would specify a time of
360 * 0 if the time range was added to the list, -1 otherwise
365 trng_add(register char *str)
372 register TIME_RNG *pt;
373 register char *up_pt = NULL;
375 register char *flgpt;
376 register int dot = 0;
379 * throw out the badly formed time ranges
381 if ((str == NULL) || (*str == '\0')) {
382 paxwarn(1, "Empty time range string");
387 * locate optional flags suffix /{cm}.
389 if ((flgpt = strrchr(str, '/')) != NULL)
392 for (stpt = str; *stpt != '\0'; ++stpt) {
393 if ((*stpt >= '0') && (*stpt <= '9'))
395 if ((*stpt == ',') && (up_pt == NULL)) {
403 * allow only one dot per range (secs)
405 if ((*stpt == '.') && (!dot)) {
409 paxwarn(1, "Improperly specified time range: %s", str);
414 * allocate space for the time range and store the limits
416 if ((pt = (TIME_RNG *)malloc(sizeof(TIME_RNG))) == NULL) {
417 paxwarn(1, "Unable to allocate memory for time range");
422 * by default we only will check file mtime, but usee can specify
423 * mtime, ctime (inode change time) or both.
425 if ((flgpt == NULL) || (*flgpt == '\0'))
429 while (*flgpt != '\0') {
440 paxwarn(1, "Bad option %c with time range %s",
449 * start off with the current time
451 pt->low_time = pt->high_time = time(NULL);
456 if (str_sec(str, &(pt->low_time)) < 0) {
457 paxwarn(1, "Illegal lower time range %s", str);
458 (void)free((char *)pt);
464 if ((up_pt != NULL) && (*up_pt != '\0')) {
468 if (str_sec(up_pt, &(pt->high_time)) < 0) {
469 paxwarn(1, "Illegal upper time range %s", up_pt);
470 (void)free((char *)pt);
476 * check that the upper and lower do not overlap
478 if (pt->flgs & HASLOW) {
479 if (pt->low_time > pt->high_time) {
480 paxwarn(1, "Upper %s and lower %s time overlap",
482 (void)free((char *)pt);
489 if (trhead == NULL) {
490 trtail = trhead = pt;
498 paxwarn(1, "Time range format is: [yy[mm[dd[hh]]]]mm[.ss][/[c][m]]");
504 * check if this files mtime/ctime falls within any supplied time range.
506 * 0 if this archive member should be processed, 1 if it should be skipped
511 trng_match(register ARCHD *arcn)
515 register ARCHD *arcn;
518 register TIME_RNG *pt;
521 * have to search down the list one at a time looking for a match.
522 * remember time range limits are inclusive.
526 switch(pt->flgs & CMPBOTH) {
529 * user wants both mtime and ctime checked for this
532 if (((pt->flgs & HASLOW) &&
533 (arcn->sb.st_mtime < pt->low_time) &&
534 (arcn->sb.st_ctime < pt->low_time)) ||
535 ((pt->flgs & HASHIGH) &&
536 (arcn->sb.st_mtime > pt->high_time) &&
537 (arcn->sb.st_ctime > pt->high_time))) {
544 * user wants only ctime checked for this time range
546 if (((pt->flgs & HASLOW) &&
547 (arcn->sb.st_ctime < pt->low_time)) ||
548 ((pt->flgs & HASHIGH) &&
549 (arcn->sb.st_ctime > pt->high_time))) {
557 * user wants only mtime checked for this time range
559 if (((pt->flgs & HASLOW) &&
560 (arcn->sb.st_mtime < pt->low_time)) ||
561 ((pt->flgs & HASHIGH) &&
562 (arcn->sb.st_mtime > pt->high_time))) {
578 * Convert a time string in the format of [yy[mm[dd[hh]]]]mm[.ss] to gmt
579 * seconds. Tval already has current time loaded into it at entry.
581 * 0 if converted ok, -1 otherwise
586 str_sec(register char *str, time_t *tval)
594 register struct tm *lt;
595 register char *dot = NULL;
597 lt = localtime(tval);
598 if ((dot = strchr(str, '.')) != NULL) {
603 if (strlen(dot) != 2)
605 if ((lt->tm_sec = ATOI2(dot)) > 61)
610 switch (strlen(str)) {
614 * watch out for year 2000
616 if ((lt->tm_year = ATOI2(str)) < 69)
623 * watch out months are from 0 - 11 internally
625 if ((lt->tm_mon = ATOI2(str)) > 12)
634 if ((lt->tm_mday = ATOI2(str)) > 31)
642 if ((lt->tm_hour = ATOI2(str)) > 23)
650 if ((lt->tm_min = ATOI2(str)) > 59)
657 * convert broken-down time to GMT clock time seconds
659 if ((*tval = mktime(lt)) == -1)