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 * 3. 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
33 * @(#)sel_subs.c 8.1 (Berkeley) 5/31/93
34 * $FreeBSD: src/bin/pax/sel_subs.c,v 1.11.2.1 2001/08/01 05:03:11 obrien Exp $
35 * $DragonFly: src/bin/pax/sel_subs.c,v 1.8 2006/09/27 21:58:08 pavalos Exp $
38 #include <sys/types.h>
52 static int str_sec (char *, time_t *);
53 static int usr_match (ARCHD *);
54 static int grp_match (ARCHD *);
55 static int trng_match (ARCHD *);
57 static TIME_RNG *trhead = NULL; /* time range list head */
58 static TIME_RNG *trtail = NULL; /* time range list tail */
59 static USRT **usrtb = NULL; /* user selection table */
60 static GRPT **grptb = NULL; /* group selection table */
63 * Routines for selection of archive members
68 * check if this file matches a specified uid, gid or time range
70 * 0 if this archive member should be processed, 1 if it should be skipped
76 if (((usrtb != NULL) && usr_match(arcn)) ||
77 ((grptb != NULL) && grp_match(arcn)) ||
78 ((trhead != NULL) && trng_match(arcn)))
84 * User/group selection routines
86 * Routines to handle user selection of files based on the file uid/gid. To
87 * add an entry, the user supplies either the name or the uid/gid starting with
88 * a # on the command line. A \# will escape the #.
93 * add a user match to the user match hash table
95 * 0 if added ok, -1 otherwise;
107 * create the table if it doesn't exist
109 if ((str == NULL) || (*str == '\0'))
111 if ((usrtb == NULL) &&
112 ((usrtb = (USRT **)calloc(USR_TB_SZ, sizeof(USRT *))) == NULL)) {
113 paxwarn(1, "Unable to allocate memory for user selection table");
118 * figure out user spec
122 * it is a user name, \# escapes # as first char in user name
124 if ((str[0] == '\\') && (str[1] == '#'))
126 if ((pw = getpwnam(str)) == NULL) {
127 paxwarn(1, "Unable to find uid for user: %s", str);
130 uid = (uid_t)pw->pw_uid;
132 uid = (uid_t)strtoul(str+1, NULL, 10);
136 * hash it and go down the hash chain (if any) looking for it
138 indx = ((unsigned)uid) % USR_TB_SZ;
139 if ((pt = usrtb[indx]) != NULL) {
148 * uid is not yet in the table, add it to the front of the chain
150 if ((pt = (USRT *)malloc(sizeof(USRT))) != NULL) {
152 pt->fow = usrtb[indx];
156 paxwarn(1, "User selection table out of memory");
162 * check if this files uid matches a selected uid.
164 * 0 if this archive member should be processed, 1 if it should be skipped
168 usr_match(ARCHD *arcn)
173 * hash and look for it in the table
175 pt = usrtb[((unsigned)arcn->sb.st_uid) % USR_TB_SZ];
177 if (pt->uid == arcn->sb.st_uid)
190 * add a group match to the group match hash table
192 * 0 if added ok, -1 otherwise;
204 * create the table if it doesn't exist
206 if ((str == NULL) || (*str == '\0'))
208 if ((grptb == NULL) &&
209 ((grptb = (GRPT **)calloc(GRP_TB_SZ, sizeof(GRPT *))) == NULL)) {
210 paxwarn(1, "Unable to allocate memory fo group selection table");
215 * figure out user spec
219 * it is a group name, \# escapes # as first char in group name
221 if ((str[0] == '\\') && (str[1] == '#'))
223 if ((gr = getgrnam(str)) == NULL) {
224 paxwarn(1,"Cannot determine gid for group name: %s", str);
227 gid = (gid_t)gr->gr_gid;
229 gid = (gid_t)strtoul(str+1, NULL, 10);
233 * hash it and go down the hash chain (if any) looking for it
235 indx = ((unsigned)gid) % GRP_TB_SZ;
236 if ((pt = grptb[indx]) != NULL) {
245 * gid not in the table, add it to the front of the chain
247 if ((pt = (GRPT *)malloc(sizeof(GRPT))) != NULL) {
249 pt->fow = grptb[indx];
253 paxwarn(1, "Group selection table out of memory");
259 * check if this files gid matches a selected gid.
261 * 0 if this archive member should be processed, 1 if it should be skipped
265 grp_match(ARCHD *arcn)
270 * hash and look for it in the table
272 pt = grptb[((unsigned)arcn->sb.st_gid) % GRP_TB_SZ];
274 if (pt->gid == arcn->sb.st_gid)
286 * Time range selection routines
288 * Routines to handle user selection of files based on the modification and/or
289 * inode change time falling within a specified time range (the non-standard
290 * -T flag). The user may specify any number of different file time ranges.
291 * Time ranges are checked one at a time until a match is found (if at all).
292 * If the file has a mtime (and/or ctime) which lies within one of the time
293 * ranges, the file is selected. Time ranges may have a lower and/or a upper
294 * value. These ranges are inclusive. When no time ranges are supplied to pax
295 * with the -T option, all members in the archive will be selected by the time
296 * range routines. When only a lower range is supplied, only files with a
297 * mtime (and/or ctime) equal to or younger are selected. When only a upper
298 * range is supplied, only files with a mtime (and/or ctime) equal to or older
299 * are selected. When the lower time range is equal to the upper time range,
300 * only files with a mtime (or ctime) of exactly that time are selected.
305 * add a time range match to the time range list.
306 * This is a non-standard pax option. Lower and upper ranges are in the
307 * format: [yy[mm[dd[hh]]]]mm[.ss] and are comma separated.
308 * Time ranges are based on current time, so 1234 would specify a time of
311 * 0 if the time range was added to the list, -1 otherwise
324 * throw out the badly formed time ranges
326 if ((str == NULL) || (*str == '\0')) {
327 paxwarn(1, "Empty time range string");
332 * locate optional flags suffix /{cm}.
334 if ((flgpt = strrchr(str, '/')) != NULL)
337 for (stpt = str; *stpt != '\0'; ++stpt) {
338 if ((*stpt >= '0') && (*stpt <= '9'))
340 if ((*stpt == ',') && (up_pt == NULL)) {
348 * allow only one dot per range (secs)
350 if ((*stpt == '.') && (!dot)) {
354 paxwarn(1, "Improperly specified time range: %s", str);
359 * allocate space for the time range and store the limits
361 if ((pt = (TIME_RNG *)malloc(sizeof(TIME_RNG))) == NULL) {
362 paxwarn(1, "Unable to allocate memory for time range");
367 * by default we only will check file mtime, but user can specify
368 * mtime, ctime (inode change time) or both.
370 if ((flgpt == NULL) || (*flgpt == '\0'))
374 while (*flgpt != '\0') {
385 paxwarn(1, "Bad option %c with time range %s",
394 * start off with the current time
396 pt->low_time = pt->high_time = time(NULL);
401 if (str_sec(str, &(pt->low_time)) < 0) {
402 paxwarn(1, "Illegal lower time range %s", str);
409 if ((up_pt != NULL) && (*up_pt != '\0')) {
413 if (str_sec(up_pt, &(pt->high_time)) < 0) {
414 paxwarn(1, "Illegal upper time range %s", up_pt);
421 * check that the upper and lower do not overlap
423 if (pt->flgs & HASLOW) {
424 if (pt->low_time > pt->high_time) {
425 paxwarn(1, "Upper %s and lower %s time overlap",
434 if (trhead == NULL) {
435 trtail = trhead = pt;
443 paxwarn(1, "Time range format is: [yy[mm[dd[hh]]]]mm[.ss][/[c][m]]");
449 * check if this files mtime/ctime falls within any supplied time range.
451 * 0 if this archive member should be processed, 1 if it should be skipped
455 trng_match(ARCHD *arcn)
460 * have to search down the list one at a time looking for a match.
461 * remember time range limits are inclusive.
465 switch(pt->flgs & CMPBOTH) {
468 * user wants both mtime and ctime checked for this
471 if (((pt->flgs & HASLOW) &&
472 (arcn->sb.st_mtime < pt->low_time) &&
473 (arcn->sb.st_ctime < pt->low_time)) ||
474 ((pt->flgs & HASHIGH) &&
475 (arcn->sb.st_mtime > pt->high_time) &&
476 (arcn->sb.st_ctime > pt->high_time))) {
483 * user wants only ctime checked for this time range
485 if (((pt->flgs & HASLOW) &&
486 (arcn->sb.st_ctime < pt->low_time)) ||
487 ((pt->flgs & HASHIGH) &&
488 (arcn->sb.st_ctime > pt->high_time))) {
496 * user wants only mtime checked for this time range
498 if (((pt->flgs & HASLOW) &&
499 (arcn->sb.st_mtime < pt->low_time)) ||
500 ((pt->flgs & HASHIGH) &&
501 (arcn->sb.st_mtime > pt->high_time))) {
517 * Convert a time string in the format of [yy[mm[dd[hh]]]]mm[.ss] to gmt
518 * seconds. Tval already has current time loaded into it at entry.
520 * 0 if converted ok, -1 otherwise
524 str_sec(char *str, time_t *tval)
529 lt = localtime(tval);
530 if ((dot = strchr(str, '.')) != NULL) {
535 if (strlen(dot) != 2)
537 if ((lt->tm_sec = ATOI2(dot)) > 61)
542 switch (strlen(str)) {
546 * watch out for year 2000
548 if ((lt->tm_year = ATOI2(str)) < 69)
555 * watch out months are from 0 - 11 internally
557 if ((lt->tm_mon = ATOI2(str)) > 12)
566 if ((lt->tm_mday = ATOI2(str)) > 31)
574 if ((lt->tm_hour = ATOI2(str)) > 23)
582 if ((lt->tm_min = ATOI2(str)) > 59)
589 * convert broken-down time to GMT clock time seconds
591 if ((*tval = mktime(lt)) == -1)