1 /* $NetBSD: sel_subs.c,v 1.20 2006/02/11 10:43:18 dsl Exp $ */
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
36 #if HAVE_NBTOOL_CONFIG_H
37 #include "nbtool_config.h"
40 #include <sys/cdefs.h>
43 static char sccsid
[] = "@(#)sel_subs.c 8.1 (Berkeley) 5/31/93";
45 __RCSID("$NetBSD: sel_subs.c,v 1.20 2006/02/11 10:43:18 dsl Exp $");
49 #include <sys/types.h>
52 #include <sys/param.h>
69 static int str_sec(const char *, time_t *);
70 static int usr_match(ARCHD
*);
71 static int grp_match(ARCHD
*);
72 static int trng_match(ARCHD
*);
74 static TIME_RNG
*trhead
= NULL
; /* time range list head */
75 static TIME_RNG
*trtail
= NULL
; /* time range list tail */
76 static USRT
**usrtb
= NULL
; /* user selection table */
77 static GRPT
**grptb
= NULL
; /* group selection table */
80 * Routines for selection of archive members
85 * check if this file matches a specified uid, gid or time range
87 * 0 if this archive member should be processed, 1 if it should be skipped
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 the name or the uid/gid starting with
105 * a # on the command line. A \# will escape the #.
110 * add a user match to the user match hash table
112 * 0 if added ok, -1 otherwise;
124 * create the table if it doesn't exist
126 if ((str
== NULL
) || (*str
== '\0'))
128 if ((usrtb
== NULL
) &&
129 ((usrtb
= (USRT
**)calloc(USR_TB_SZ
, sizeof(USRT
*))) == NULL
)) {
131 "Unable to allocate memory for user selection table");
136 * figure out user spec
140 * it is a user name, \# escapes # as first char in user name
142 if ((str
[0] == '\\') && (str
[1] == '#'))
144 if ((pw
= getpwnam(str
)) == NULL
) {
145 tty_warn(1, "Unable to find uid for user: %s", str
);
148 uid
= (uid_t
)pw
->pw_uid
;
150 uid
= (uid_t
)strtoul(str
+1, (char **)NULL
, 10);
154 * hash it and go down the hash chain (if any) looking for it
156 indx
= ((unsigned)uid
) % USR_TB_SZ
;
157 if ((pt
= usrtb
[indx
]) != NULL
) {
166 * uid is not yet in the table, add it to the front of the chain
168 if ((pt
= (USRT
*)malloc(sizeof(USRT
))) != NULL
) {
170 pt
->fow
= usrtb
[indx
];
174 tty_warn(1, "User selection table out of memory");
180 * check if this files uid matches a selected uid.
182 * 0 if this archive member should be processed, 1 if it should be skipped
186 usr_match(ARCHD
*arcn
)
191 * hash and look for it in the table
193 pt
= usrtb
[((unsigned)arcn
->sb
.st_uid
) % USR_TB_SZ
];
195 if (pt
->uid
== arcn
->sb
.st_uid
)
208 * add a group match to the group match hash table
210 * 0 if added ok, -1 otherwise;
222 * create the table if it doesn't exist
224 if ((str
== NULL
) || (*str
== '\0'))
226 if ((grptb
== NULL
) &&
227 ((grptb
= (GRPT
**)calloc(GRP_TB_SZ
, sizeof(GRPT
*))) == NULL
)) {
229 "Unable to allocate memory fo group selection table");
234 * figure out user spec
238 * it is a group name, \# escapes # as first char in group name
240 if ((str
[0] == '\\') && (str
[1] == '#'))
242 if ((gr
= getgrnam(str
)) == NULL
) {
244 "Cannot determine gid for group name: %s", str
);
247 gid
= (gid_t
)gr
->gr_gid
;
249 gid
= (gid_t
)strtoul(str
+1, (char **)NULL
, 10);
253 * hash it and go down the hash chain (if any) looking for it
255 indx
= ((unsigned)gid
) % GRP_TB_SZ
;
256 if ((pt
= grptb
[indx
]) != NULL
) {
265 * gid not in the table, add it to the front of the chain
267 if ((pt
= (GRPT
*)malloc(sizeof(GRPT
))) != NULL
) {
269 pt
->fow
= grptb
[indx
];
273 tty_warn(1, "Group selection table out of memory");
279 * check if this files gid matches a selected gid.
281 * 0 if this archive member should be processed, 1 if it should be skipped
285 grp_match(ARCHD
*arcn
)
290 * hash and look for it in the table
292 pt
= grptb
[((unsigned)arcn
->sb
.st_gid
) % GRP_TB_SZ
];
294 if (pt
->gid
== arcn
->sb
.st_gid
)
306 * Time range selection routines
308 * Routines to handle user selection of files based on the modification and/or
309 * inode change time falling within a specified time range (the non-standard
310 * -T flag). The user may specify any number of different file time ranges.
311 * Time ranges are checked one at a time until a match is found (if at all).
312 * If the file has a mtime (and/or ctime) which lies within one of the time
313 * ranges, the file is selected. Time ranges may have a lower and/or a upper
314 * value. These ranges are inclusive. When no time ranges are supplied to pax
315 * with the -T option, all members in the archive will be selected by the time
316 * range routines. When only a lower range is supplied, only files with a
317 * mtime (and/or ctime) equal to or younger are selected. When only a upper
318 * range is supplied, only files with a mtime (and/or ctime) equal to or older
319 * are selected. When the lower time range is equal to the upper time range,
320 * only files with a mtime (or ctime) of exactly that time are selected.
325 * add a time range match to the time range list.
326 * This is a non-standard pax option. Lower and upper ranges are in the
327 * format: [yy[mm[dd[hh]]]]mm[.ss] and are comma separated.
328 * Time ranges are based on current time, so 1234 would specify a time of
331 * 0 if the time range was added to the list, -1 otherwise
344 * throw out the badly formed time ranges
346 if ((str
== NULL
) || (*str
== '\0')) {
347 tty_warn(1, "Empty time range string");
352 * locate optional flags suffix /{cm}.
354 if ((flgpt
= strrchr(str
, '/')) != NULL
)
357 for (stpt
= str
; *stpt
!= '\0'; ++stpt
) {
358 if ((*stpt
>= '0') && (*stpt
<= '9'))
360 if ((*stpt
== ',') && (up_pt
== NULL
)) {
368 * allow only one dot per range (secs)
370 if ((*stpt
== '.') && (!dot
)) {
374 tty_warn(1, "Improperly specified time range: %s", str
);
379 * allocate space for the time range and store the limits
381 if ((pt
= (TIME_RNG
*)malloc(sizeof(TIME_RNG
))) == NULL
) {
382 tty_warn(1, "Unable to allocate memory for time range");
387 * by default we only will check file mtime, but user can specify
388 * mtime, ctime (inode change time) or both.
390 if ((flgpt
== NULL
) || (*flgpt
== '\0'))
394 while (*flgpt
!= '\0') {
405 tty_warn(1, "Bad option %c with time range %s",
414 * start off with the current time
416 pt
->low_time
= pt
->high_time
= time((time_t *)NULL
);
421 if (str_sec(str
, &(pt
->low_time
)) < 0) {
422 tty_warn(1, "Illegal lower time range %s", str
);
423 (void)free((char *)pt
);
429 if ((up_pt
!= NULL
) && (*up_pt
!= '\0')) {
433 if (str_sec(up_pt
, &(pt
->high_time
)) < 0) {
434 tty_warn(1, "Illegal upper time range %s", up_pt
);
435 (void)free((char *)pt
);
441 * check that the upper and lower do not overlap
443 if (pt
->flgs
& HASLOW
) {
444 if (pt
->low_time
> pt
->high_time
) {
446 "Upper %s and lower %s time overlap",
448 (void)free((char *)pt
);
455 if (trhead
== NULL
) {
456 trtail
= trhead
= pt
;
464 tty_warn(1, "Time range format is: [yy[mm[dd[hh]]]]mm[.ss][/[c][m]]");
470 * check if this files mtime/ctime falls within any supplied time range.
472 * 0 if this archive member should be processed, 1 if it should be skipped
476 trng_match(ARCHD
*arcn
)
481 * have to search down the list one at a time looking for a match.
482 * remember time range limits are inclusive.
486 switch(pt
->flgs
& CMPBOTH
) {
489 * user wants both mtime and ctime checked for this
492 if (((pt
->flgs
& HASLOW
) &&
493 (arcn
->sb
.st_mtime
< pt
->low_time
) &&
494 (arcn
->sb
.st_ctime
< pt
->low_time
)) ||
495 ((pt
->flgs
& HASHIGH
) &&
496 (arcn
->sb
.st_mtime
> pt
->high_time
) &&
497 (arcn
->sb
.st_ctime
> pt
->high_time
))) {
504 * user wants only ctime checked for this time range
506 if (((pt
->flgs
& HASLOW
) &&
507 (arcn
->sb
.st_ctime
< pt
->low_time
)) ||
508 ((pt
->flgs
& HASHIGH
) &&
509 (arcn
->sb
.st_ctime
> pt
->high_time
))) {
517 * user wants only mtime checked for this time range
519 if (((pt
->flgs
& HASLOW
) &&
520 (arcn
->sb
.st_mtime
< pt
->low_time
)) ||
521 ((pt
->flgs
& HASHIGH
) &&
522 (arcn
->sb
.st_mtime
> pt
->high_time
))) {
538 * Convert a time string in the format of [yy[mm[dd[hh]]]]mm[.ss] to gmt
539 * seconds. Tval already has current time loaded into it at entry.
541 * 0 if converted ok, -1 otherwise
544 #define ATOI2(s) ((s) += 2, ((s)[-2] - '0') * 10 + ((s)[-1] - '0'))
547 str_sec(const char *p
, time_t *tval
)
553 for (t
= p
, dot
= NULL
; *t
; ++t
) {
554 if (isdigit((unsigned char)*t
))
556 if (*t
== '.' && dot
== NULL
) {
563 lt
= localtime(tval
);
570 lt
->tm_sec
= ATOI2(dot
);
577 switch (strlen(p
) - len
) {
579 lt
->tm_year
= ATOI2(p
) * 100 - TM_YEAR_BASE
;
584 lt
->tm_year
+= ATOI2(p
);
588 lt
->tm_year
= yearset
+ 2000 - TM_YEAR_BASE
;
590 lt
->tm_year
= yearset
+ 1900 - TM_YEAR_BASE
;
594 lt
->tm_mon
= ATOI2(p
);
598 lt
->tm_mday
= ATOI2(p
);
601 lt
->tm_hour
= ATOI2(p
);
604 lt
->tm_min
= ATOI2(p
);
611 * convert broken-down time to GMT clock time seconds
613 if ((*tval
= mktime(lt
)) == -1)