Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	bin/pax/sel_subs.c	Lines:	5	202	2.5 %
Date:	2017-11-07	Branches:	3	185	1.6 %


/*	$OpenBSD: sel_subs.c,v 1.26 2016/08/26 04:20:38 guenther Exp $	*/
/*	$NetBSD: sel_subs.c,v 1.5 1995/03/21 09:07:42 cgd Exp $	*/

/*-
 * Copyright (c) 1992 Keith Muller.
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Keith Muller of the University of California, San Diego.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/types.h>
#include <sys/stat.h>
#include <ctype.h>
#include <grp.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

#include "pax.h"
#include "extern.h"

/*
 * data structure for storing uid/grp selects (-U, -G non standard options)
 */

#define USR_TB_SZ	317		/* user selection table size */
#define GRP_TB_SZ	317		/* user selection table size */

typedef struct usrt {
	uid_t uid;
	struct usrt *fow;		/* next uid */
} USRT;

typedef struct grpt {
	gid_t gid;
	struct grpt *fow;		/* next gid */
} GRPT;

/*
 * data structure for storing user supplied time ranges (-T option)
 */

#define ATOI2(ar)	((ar)[0] - '0') * 10 + ((ar)[1] - '0'); (ar) += 2;

typedef struct time_rng {
	time_t		low_time;	/* lower inclusive time limit */
	time_t		high_time;	/* higher inclusive time limit */
	int		flgs;		/* option flags */
#define	HASLOW		0x01		/* has lower time limit */
#define HASHIGH		0x02		/* has higher time limit */
#define CMPMTME		0x04		/* compare file modification time */
#define CMPCTME		0x08		/* compare inode change time */
#define CMPBOTH	(CMPMTME|CMPCTME)	/* compare inode and mod time */
	struct time_rng	*fow;		/* next pattern */
} TIME_RNG;

static int str_sec(const char *, time_t *);
static int usr_match(ARCHD *);
static int grp_match(ARCHD *);
static int trng_match(ARCHD *);

static TIME_RNG *trhead = NULL;		/* time range list head */
static TIME_RNG *trtail = NULL;		/* time range list tail */
static USRT **usrtb = NULL;		/* user selection table */
static GRPT **grptb = NULL;		/* group selection table */

/*
 * Routines for selection of archive members
 */

/*
 * sel_chk()
 *	check if this file matches a specified uid, gid or time range
 * Return:
 *	0 if this archive member should be processed, 1 if it should be skipped
 */

int
sel_chk(ARCHD *arcn)
{
	if (((usrtb != NULL) && usr_match(arcn)) ||
	    ((grptb != NULL) && grp_match(arcn)) ||
	    ((trhead != NULL) && trng_match(arcn)))
		return(1);
	return(0);
}

/*
 * User/group selection routines
 *
 * Routines to handle user selection of files based on the file uid/gid. To
 * add an entry, the user supplies either the name or the uid/gid starting with
 * a # on the command line. A \# will escape the #.
 */

/*
 * usr_add()
 *	add a user match to the user match hash table
 * Return:
 *	0 if added ok, -1 otherwise;
 */

int
usr_add(char *str)
{
	u_int indx;
	USRT *pt;
	struct passwd *pw;
	uid_t uid;

	/*
	 * create the table if it doesn't exist
	 */
	if ((str == NULL) || (*str == '\0'))
		return(-1);
	if ((usrtb == NULL) &&
	    ((usrtb = calloc(USR_TB_SZ, sizeof(USRT *))) == NULL)) {
		paxwarn(1, "Unable to allocate memory for user selection table");
		return(-1);
	}

	/*
	 * figure out user spec
	 */
	if (str[0] != '#') {
		/*
		 * it is a user name, \# escapes # as first char in user name
		 */
		if ((str[0] == '\\') && (str[1] == '#'))
			++str;
		if ((pw = getpwnam(str)) == NULL) {
			paxwarn(1, "Unable to find uid for user: %s", str);
			return(-1);
		}
		uid = (uid_t)pw->pw_uid;
	} else
		uid = (uid_t)strtoul(str+1, NULL, 10);
	endpwent();

	/*
	 * hash it and go down the hash chain (if any) looking for it
	 */
	indx = ((unsigned)uid) % USR_TB_SZ;
	if ((pt = usrtb[indx]) != NULL) {
		while (pt != NULL) {
			if (pt->uid == uid)
				return(0);
			pt = pt->fow;
		}
	}

	/*
	 * uid is not yet in the table, add it to the front of the chain
	 */
	if ((pt = malloc(sizeof(USRT))) != NULL) {
		pt->uid = uid;
		pt->fow = usrtb[indx];
		usrtb[indx] = pt;
		return(0);
	}
	paxwarn(1, "User selection table out of memory");
	return(-1);
}

/*
 * usr_match()
 *	check if this files uid matches a selected uid.
 * Return:
 *	0 if this archive member should be processed, 1 if it should be skipped
 */

static int
usr_match(ARCHD *arcn)
{
	USRT *pt;

	/*
	 * hash and look for it in the table
	 */
	pt = usrtb[((unsigned)arcn->sb.st_uid) % USR_TB_SZ];
	while (pt != NULL) {
		if (pt->uid == arcn->sb.st_uid)
			return(0);
		pt = pt->fow;
	}

	/*
	 * not found
	 */
	return(1);
}

/*
 * grp_add()
 *	add a group match to the group match hash table
 * Return:
 *	0 if added ok, -1 otherwise;
 */

int
grp_add(char *str)
{
	u_int indx;
	GRPT *pt;
	struct group *gr;
	gid_t gid;

	/*
	 * create the table if it doesn't exist
	 */
	if ((str == NULL) || (*str == '\0'))
		return(-1);
	if ((grptb == NULL) &&
	    ((grptb = calloc(GRP_TB_SZ, sizeof(GRPT *))) == NULL)) {
		paxwarn(1, "Unable to allocate memory fo group selection table");
		return(-1);
	}

	/*
	 * figure out user spec
	 */
	if (str[0] != '#') {
		/*
		 * it is a group name, \# escapes # as first char in group name
		 */
		if ((str[0] == '\\') && (str[1] == '#'))
			++str;
		if ((gr = getgrnam(str)) == NULL) {
			paxwarn(1,"Cannot determine gid for group name: %s", str);
			return(-1);
		}
		gid = (gid_t)gr->gr_gid;
	} else
		gid = (gid_t)strtoul(str+1, NULL, 10);
	endgrent();

	/*
	 * hash it and go down the hash chain (if any) looking for it
	 */
	indx = ((unsigned)gid) % GRP_TB_SZ;
	if ((pt = grptb[indx]) != NULL) {
		while (pt != NULL) {
			if (pt->gid == gid)
				return(0);
			pt = pt->fow;
		}
	}

	/*
	 * gid not in the table, add it to the front of the chain
	 */
	if ((pt = malloc(sizeof(GRPT))) != NULL) {
		pt->gid = gid;
		pt->fow = grptb[indx];
		grptb[indx] = pt;
		return(0);
	}
	paxwarn(1, "Group selection table out of memory");
	return(-1);
}

/*
 * grp_match()
 *	check if this files gid matches a selected gid.
 * Return:
 *	0 if this archive member should be processed, 1 if it should be skipped
 */

static int
grp_match(ARCHD *arcn)
{
	GRPT *pt;

	/*
	 * hash and look for it in the table
	 */
	pt = grptb[((unsigned)arcn->sb.st_gid) % GRP_TB_SZ];
	while (pt != NULL) {
		if (pt->gid == arcn->sb.st_gid)
			return(0);
		pt = pt->fow;
	}

	/*
	 * not found
	 */
	return(1);
}

/*
 * Time range selection routines
 *
 * Routines to handle user selection of files based on the modification and/or
 * inode change time falling within a specified time range (the non-standard
 * -T flag). The user may specify any number of different file time ranges.
 * Time ranges are checked one at a time until a match is found (if at all).
 * If the file has a mtime (and/or ctime) which lies within one of the time
 * ranges, the file is selected. Time ranges may have a lower and/or a upper
 * value. These ranges are inclusive. When no time ranges are supplied to pax
 * with the -T option, all members in the archive will be selected by the time
 * range routines. When only a lower range is supplied, only files with a
 * mtime (and/or ctime) equal to or younger are selected. When only a upper
 * range is supplied, only files with a mtime (and/or ctime) equal to or older
 * are selected. When the lower time range is equal to the upper time range,
 * only files with a mtime (or ctime) of exactly that time are selected.
 */

/*
 * trng_add()
 *	add a time range match to the time range list.
 *	This is a non-standard pax option. Lower and upper ranges are in the
 *	format: [[[[[cc]yy]mm]dd]HH]MM[.SS] and are comma separated.
 *	Time ranges are based on current time, so 1234 would specify a time of
 *	12:34 today.
 * Return:
 *	0 if the time range was added to the list, -1 otherwise
 */

int
trng_add(char *str)
{
	TIME_RNG *pt;
	char *up_pt = NULL;
	char *stpt;
	char *flgpt;
	int dot = 0;

	/*
	 * throw out the badly formed time ranges
	 */
	if ((str == NULL) || (*str == '\0')) {
		paxwarn(1, "Empty time range string");
		return(-1);
	}

	/*
	 * locate optional flags suffix /{cm}.
	 */
	if ((flgpt = strrchr(str, '/')) != NULL)
		*flgpt++ = '\0';

	for (stpt = str; *stpt != '\0'; ++stpt) {
		if ((*stpt >= '0') && (*stpt <= '9'))
			continue;
		if ((*stpt == ',') && (up_pt == NULL)) {
			*stpt = '\0';
			up_pt = stpt + 1;
			dot = 0;
			continue;
		}

		/*
		 * allow only one dot per range (secs)
		 */
		if ((*stpt == '.') && (!dot)) {
			++dot;
			continue;
		}
		paxwarn(1, "Improperly specified time range: %s", str);
		goto out;
	}

	/*
	 * allocate space for the time range and store the limits
	 */
	if ((pt = malloc(sizeof(TIME_RNG))) == NULL) {
		paxwarn(1, "Unable to allocate memory for time range");
		return(-1);
	}

	/*
	 * by default we only will check file mtime, but user can specify
	 * mtime, ctime (inode change time) or both.
	 */
	if ((flgpt == NULL) || (*flgpt == '\0'))
		pt->flgs = CMPMTME;
	else {
		pt->flgs = 0;
		while (*flgpt != '\0') {
			switch (*flgpt) {
			case 'M':
			case 'm':
				pt->flgs |= CMPMTME;
				break;
			case 'C':
			case 'c':
				pt->flgs |= CMPCTME;
				break;
			default:
				paxwarn(1, "Bad option %c with time range %s",
				    *flgpt, str);
				free(pt);
				goto out;
			}
			++flgpt;
		}
	}

	/*
	 * start off with the current time
	 */
	pt->low_time = pt->high_time = time(NULL);
	if (*str != '\0') {
		/*
		 * add lower limit
		 */
		if (str_sec(str, &(pt->low_time)) < 0) {
			paxwarn(1, "Illegal lower time range %s", str);
			free(pt);
			goto out;
		}
		pt->flgs |= HASLOW;
	}

	if ((up_pt != NULL) && (*up_pt != '\0')) {
		/*
		 * add upper limit
		 */
		if (str_sec(up_pt, &(pt->high_time)) < 0) {
			paxwarn(1, "Illegal upper time range %s", up_pt);
			free(pt);
			goto out;
		}
		pt->flgs |= HASHIGH;

		/*
		 * check that the upper and lower do not overlap
		 */
		if (pt->flgs & HASLOW) {
			if (pt->low_time > pt->high_time) {
				paxwarn(1, "Upper %s and lower %s time overlap",
					up_pt, str);
				free(pt);
				return(-1);
			}
		}
	}

	pt->fow = NULL;
	if (trhead == NULL) {
		trtail = trhead = pt;
		return(0);
	}
	trtail->fow = pt;
	trtail = pt;
	return(0);

    out:
	paxwarn(1, "Time range format is: [[[[[cc]yy]mm]dd]HH]MM[.SS][/[c][m]]");
	return(-1);
}

/*
 * trng_match()
 *	check if this files mtime/ctime falls within any supplied time range.
 * Return:
 *	0 if this archive member should be processed, 1 if it should be skipped
 */

static int
trng_match(ARCHD *arcn)
{
	TIME_RNG *pt;

	/*
	 * have to search down the list one at a time looking for a match.
	 * remember time range limits are inclusive.
	 */
	pt = trhead;
	while (pt != NULL) {
		switch (pt->flgs & CMPBOTH) {
		case CMPBOTH:
			/*
			 * user wants both mtime and ctime checked for this
			 * time range
			 */
			if (((pt->flgs & HASLOW) &&
			    (arcn->sb.st_mtime < pt->low_time) &&
			    (arcn->sb.st_ctime < pt->low_time)) ||
			    ((pt->flgs & HASHIGH) &&
			    (arcn->sb.st_mtime > pt->high_time) &&
			    (arcn->sb.st_ctime > pt->high_time))) {
				pt = pt->fow;
				continue;
			}
			break;
		case CMPCTME:
			/*
			 * user wants only ctime checked for this time range
			 */
			if (((pt->flgs & HASLOW) &&
			    (arcn->sb.st_ctime < pt->low_time)) ||
			    ((pt->flgs & HASHIGH) &&
			    (arcn->sb.st_ctime > pt->high_time))) {
				pt = pt->fow;
				continue;
			}
			break;
		case CMPMTME:
		default:
			/*
			 * user wants only mtime checked for this time range
			 */
			if (((pt->flgs & HASLOW) &&
			    (arcn->sb.st_mtime < pt->low_time)) ||
			    ((pt->flgs & HASHIGH) &&
			    (arcn->sb.st_mtime > pt->high_time))) {
				pt = pt->fow;
				continue;
			}
			break;
		}
		break;
	}

	if (pt == NULL)
		return(1);
	return(0);
}

/*
 * str_sec()
 *	Convert a time string in the format of [[[[[cc]yy]mm]dd]HH]MM[.SS] to
 *	seconds UTC. Tval already has current time loaded into it at entry.
 * Return:
 *	0 if converted ok, -1 otherwise
 */

static int
str_sec(const char *p, time_t *tval)
{
	struct tm *lt;
	const char *dot, *t;
	size_t len;
	int bigyear;
	int yearset;

	yearset = 0;
	len = strlen(p);

	for (t = p, dot = NULL; *t; ++t) {
		if (isdigit((unsigned char)*t))
			continue;
		if (*t == '.' && dot == NULL) {
			dot = t;
			continue;
		}
		return(-1);
	}

	lt = localtime(tval);

	if (dot != NULL) {			/* .SS */
		if (strlen(++dot) != 2)
			return(-1);
		lt->tm_sec = ATOI2(dot);
		if (lt->tm_sec > 61)
			return(-1);
		len -= 3;
	} else
		lt->tm_sec = 0;

	switch (len) {
	case 12:				/* cc */
		bigyear = ATOI2(p);
		lt->tm_year = (bigyear * 100) - 1900;
		yearset = 1;
		/* FALLTHROUGH */
	case 10:				/* yy */
		if (yearset) {
			lt->tm_year += ATOI2(p);
		} else {
			lt->tm_year = ATOI2(p);
			if (lt->tm_year < 69)		/* hack for 2000 ;-} */
				lt->tm_year += (2000 - 1900);
		}
		/* FALLTHROUGH */
	case 8:					/* mm */
		lt->tm_mon = ATOI2(p);
		if ((lt->tm_mon > 12) || !lt->tm_mon)
			return(-1);
		--lt->tm_mon;			/* time struct is 0 - 11 */
		/* FALLTHROUGH */
	case 6:					/* dd */
		lt->tm_mday = ATOI2(p);
		if ((lt->tm_mday > 31) || !lt->tm_mday)
			return(-1);
		/* FALLTHROUGH */
	case 4:					/* HH */
		lt->tm_hour = ATOI2(p);
		if (lt->tm_hour > 23)
			return(-1);
		/* FALLTHROUGH */
	case 2:					/* MM */
		lt->tm_min = ATOI2(p);
		if (lt->tm_min > 59)
			return(-1);
		break;
	default:
		return(-1);
	}

	/* convert broken-down time to UTC clock time seconds */
	if ((*tval = mktime(lt)) == -1)
		return(-1);
	return(0);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: sel_subs.c,v 1.26 2016/08/26 04:20:38 guenther Exp $ */
2			/* $NetBSD: sel_subs.c,v 1.5 1995/03/21 09:07:42 cgd Exp $ */
3
4			/*-
5			* Copyright (c) 1992 Keith Muller.
6			* Copyright (c) 1992, 1993
7			* The Regents of the University of California. All rights reserved.
8			*
9			* This code is derived from software contributed to Berkeley by
10			* Keith Muller of the University of California, San Diego.
11			*
12			* Redistribution and use in source and binary forms, with or without
13			* modification, are permitted provided that the following conditions
14			* are met:
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. Neither the name of the University nor the names of its contributors
21			* may be used to endorse or promote products derived from this software
22			* without specific prior written permission.
23			*
24			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34			* SUCH DAMAGE.
35			*/
36
37			#include <sys/types.h>
38			#include <sys/stat.h>
39			#include <ctype.h>
40			#include <grp.h>
41			#include <pwd.h>
42			#include <stdio.h>
43			#include <stdlib.h>
44			#include <string.h>
45			#include <time.h>
46
47			#include "pax.h"
48			#include "extern.h"
49
50			/*
51			* data structure for storing uid/grp selects (-U, -G non standard options)
52			*/
53
54			#define USR_TB_SZ 317 /* user selection table size */
55			#define GRP_TB_SZ 317 /* user selection table size */
56
57			typedef struct usrt {
58			uid_t uid;
59			struct usrt fow; / next uid */
60			} USRT;
61
62			typedef struct grpt {
63			gid_t gid;
64			struct grpt fow; / next gid */
65			} GRPT;
66
67			/*
68			* data structure for storing user supplied time ranges (-T option)
69			*/
70
71			#define ATOI2(ar) ((ar)[0] - '0') * 10 + ((ar)[1] - '0'); (ar) += 2;
72
73			typedef struct time_rng {
74			time_t low_time; /* lower inclusive time limit */
75			time_t high_time; /* higher inclusive time limit */
76			int flgs; /* option flags */
77			#define HASLOW 0x01 /* has lower time limit */
78			#define HASHIGH 0x02 /* has higher time limit */
79			#define CMPMTME 0x04 /* compare file modification time */
80			#define CMPCTME 0x08 /* compare inode change time */
81			#define CMPBOTH (CMPMTME\|CMPCTME) /* compare inode and mod time */
82			struct time_rng fow; / next pattern */
83			} TIME_RNG;
84
85			static int str_sec(const char , time_t );
86			static int usr_match(ARCHD *);
87			static int grp_match(ARCHD *);
88			static int trng_match(ARCHD *);
89
90			static TIME_RNG trhead = NULL; / time range list head */
91			static TIME_RNG trtail = NULL; / time range list tail */
92			static USRT *usrtb = NULL; / user selection table */
93			static GRPT *grptb = NULL; / group selection table */
94
95			/*
96			* Routines for selection of archive members
97			*/
98
99			/*
100			* sel_chk()
101			* check if this file matches a specified uid, gid or time range
102			* Return:
103			* 0 if this archive member should be processed, 1 if it should be skipped
104			*/
105
106			int
107			sel_chk(ARCHD *arcn)
108			{
109	✗✓✗✗ ✗✗	24484	if (((usrtb != NULL) && usr_match(arcn)) \|\|
110	✗✓✗✗	12242	((grptb != NULL) && grp_match(arcn)) \|\|
111	✗✓	12242	((trhead != NULL) && trng_match(arcn)))
112			return(1);
113		12242	return(0);
114		12242	}
115
116			/*
117			* User/group selection routines
118			*
119			* Routines to handle user selection of files based on the file uid/gid. To
120			* add an entry, the user supplies either the name or the uid/gid starting with
121			* a # on the command line. A \# will escape the #.
122			*/
123
124			/*
125			* usr_add()
126			* add a user match to the user match hash table
127			* Return:
128			* 0 if added ok, -1 otherwise;
129			*/
130
131			int
132			usr_add(char *str)
133			{
134			u_int indx;
135			USRT *pt;
136			struct passwd *pw;
137			uid_t uid;
138
139			/*
140			* create the table if it doesn't exist
141			*/
142			if ((str == NULL) \|\| (*str == '\0'))
143			return(-1);
144			if ((usrtb == NULL) &&
145			((usrtb = calloc(USR_TB_SZ, sizeof(USRT *))) == NULL)) {
146			paxwarn(1, "Unable to allocate memory for user selection table");
147			return(-1);
148			}
149
150			/*
151			* figure out user spec
152			*/
153			if (str[0] != '#') {
154			/*
155			* it is a user name, \# escapes # as first char in user name
156			*/
157			if ((str[0] == '\\') && (str[1] == '#'))
158			++str;
159			if ((pw = getpwnam(str)) == NULL) {
160			paxwarn(1, "Unable to find uid for user: %s", str);
161			return(-1);
162			}
163			uid = (uid_t)pw->pw_uid;
164			} else
165			uid = (uid_t)strtoul(str+1, NULL, 10);
166			endpwent();
167
168			/*
169			* hash it and go down the hash chain (if any) looking for it
170			*/
171			indx = ((unsigned)uid) % USR_TB_SZ;
172			if ((pt = usrtb[indx]) != NULL) {
173			while (pt != NULL) {
174			if (pt->uid == uid)
175			return(0);
176			pt = pt->fow;
177			}
178			}
179
180			/*
181			* uid is not yet in the table, add it to the front of the chain
182			*/
183			if ((pt = malloc(sizeof(USRT))) != NULL) {
184			pt->uid = uid;
185			pt->fow = usrtb[indx];
186			usrtb[indx] = pt;
187			return(0);
188			}
189			paxwarn(1, "User selection table out of memory");
190			return(-1);
191			}
192
193			/*
194			* usr_match()
195			* check if this files uid matches a selected uid.
196			* Return:
197			* 0 if this archive member should be processed, 1 if it should be skipped
198			*/
199
200			static int
201			usr_match(ARCHD *arcn)
202			{
203			USRT *pt;
204
205			/*
206			* hash and look for it in the table
207			*/
208			pt = usrtb[((unsigned)arcn->sb.st_uid) % USR_TB_SZ];
209			while (pt != NULL) {
210			if (pt->uid == arcn->sb.st_uid)
211			return(0);
212			pt = pt->fow;
213			}
214
215			/*
216			* not found
217			*/
218			return(1);
219			}
220
221			/*
222			* grp_add()
223			* add a group match to the group match hash table
224			* Return:
225			* 0 if added ok, -1 otherwise;
226			*/
227
228			int
229			grp_add(char *str)
230			{
231			u_int indx;
232			GRPT *pt;
233			struct group *gr;
234			gid_t gid;
235
236			/*
237			* create the table if it doesn't exist
238			*/
239			if ((str == NULL) \|\| (*str == '\0'))
240			return(-1);
241			if ((grptb == NULL) &&
242			((grptb = calloc(GRP_TB_SZ, sizeof(GRPT *))) == NULL)) {
243			paxwarn(1, "Unable to allocate memory fo group selection table");
244			return(-1);
245			}
246
247			/*
248			* figure out user spec
249			*/
250			if (str[0] != '#') {
251			/*
252			* it is a group name, \# escapes # as first char in group name
253			*/
254			if ((str[0] == '\\') && (str[1] == '#'))
255			++str;
256			if ((gr = getgrnam(str)) == NULL) {
257			paxwarn(1,"Cannot determine gid for group name: %s", str);
258			return(-1);
259			}
260			gid = (gid_t)gr->gr_gid;
261			} else
262			gid = (gid_t)strtoul(str+1, NULL, 10);
263			endgrent();
264
265			/*
266			* hash it and go down the hash chain (if any) looking for it
267			*/
268			indx = ((unsigned)gid) % GRP_TB_SZ;
269			if ((pt = grptb[indx]) != NULL) {
270			while (pt != NULL) {
271			if (pt->gid == gid)
272			return(0);
273			pt = pt->fow;
274			}
275			}
276
277			/*
278			* gid not in the table, add it to the front of the chain
279			*/
280			if ((pt = malloc(sizeof(GRPT))) != NULL) {
281			pt->gid = gid;
282			pt->fow = grptb[indx];
283			grptb[indx] = pt;
284			return(0);
285			}
286			paxwarn(1, "Group selection table out of memory");
287			return(-1);
288			}
289
290			/*
291			* grp_match()
292			* check if this files gid matches a selected gid.
293			* Return:
294			* 0 if this archive member should be processed, 1 if it should be skipped
295			*/
296
297			static int
298			grp_match(ARCHD *arcn)
299			{
300			GRPT *pt;
301
302			/*
303			* hash and look for it in the table
304			*/
305			pt = grptb[((unsigned)arcn->sb.st_gid) % GRP_TB_SZ];
306			while (pt != NULL) {
307			if (pt->gid == arcn->sb.st_gid)
308			return(0);
309			pt = pt->fow;
310			}
311
312			/*
313			* not found
314			*/
315			return(1);
316			}
317
318			/*
319			* Time range selection routines
320			*
321			* Routines to handle user selection of files based on the modification and/or
322			* inode change time falling within a specified time range (the non-standard
323			* -T flag). The user may specify any number of different file time ranges.
324			* Time ranges are checked one at a time until a match is found (if at all).
325			* If the file has a mtime (and/or ctime) which lies within one of the time
326			* ranges, the file is selected. Time ranges may have a lower and/or a upper
327			* value. These ranges are inclusive. When no time ranges are supplied to pax
328			* with the -T option, all members in the archive will be selected by the time
329			* range routines. When only a lower range is supplied, only files with a
330			* mtime (and/or ctime) equal to or younger are selected. When only a upper
331			* range is supplied, only files with a mtime (and/or ctime) equal to or older
332			* are selected. When the lower time range is equal to the upper time range,
333			* only files with a mtime (or ctime) of exactly that time are selected.
334			*/
335
336			/*
337			* trng_add()
338			* add a time range match to the time range list.
339			* This is a non-standard pax option. Lower and upper ranges are in the
340			* format: [[[[[cc]yy]mm]dd]HH]MM[.SS] and are comma separated.
341			* Time ranges are based on current time, so 1234 would specify a time of
342			* 12:34 today.
343			* Return:
344			* 0 if the time range was added to the list, -1 otherwise
345			*/
346
347			int
348			trng_add(char *str)
349			{
350			TIME_RNG *pt;
351			char *up_pt = NULL;
352			char *stpt;
353			char *flgpt;
354			int dot = 0;
355
356			/*
357			* throw out the badly formed time ranges
358			*/
359			if ((str == NULL) \|\| (*str == '\0')) {
360			paxwarn(1, "Empty time range string");
361			return(-1);
362			}
363
364			/*
365			* locate optional flags suffix /{cm}.
366			*/
367			if ((flgpt = strrchr(str, '/')) != NULL)
368			*flgpt++ = '\0';
369
370			for (stpt = str; *stpt != '\0'; ++stpt) {
371			if ((stpt >= '0') && (stpt <= '9'))
372			continue;
373			if ((*stpt == ',') && (up_pt == NULL)) {
374			*stpt = '\0';
375			up_pt = stpt + 1;
376			dot = 0;
377			continue;
378			}
379
380			/*
381			* allow only one dot per range (secs)
382			*/
383			if ((*stpt == '.') && (!dot)) {
384			++dot;
385			continue;
386			}
387			paxwarn(1, "Improperly specified time range: %s", str);
388			goto out;
389			}
390
391			/*
392			* allocate space for the time range and store the limits
393			*/
394			if ((pt = malloc(sizeof(TIME_RNG))) == NULL) {
395			paxwarn(1, "Unable to allocate memory for time range");
396			return(-1);
397			}
398
399			/*
400			* by default we only will check file mtime, but user can specify
401			* mtime, ctime (inode change time) or both.
402			*/
403			if ((flgpt == NULL) \|\| (*flgpt == '\0'))
404			pt->flgs = CMPMTME;
405			else {
406			pt->flgs = 0;
407			while (*flgpt != '\0') {
408			switch (*flgpt) {
409			case 'M':
410			case 'm':
411			pt->flgs \|= CMPMTME;
412			break;
413			case 'C':
414			case 'c':
415			pt->flgs \|= CMPCTME;
416			break;
417			default:
418			paxwarn(1, "Bad option %c with time range %s",
419			*flgpt, str);
420			free(pt);
421			goto out;
422			}
423			++flgpt;
424			}
425			}
426
427			/*
428			* start off with the current time
429			*/
430			pt->low_time = pt->high_time = time(NULL);
431			if (*str != '\0') {
432			/*
433			* add lower limit
434			*/
435			if (str_sec(str, &(pt->low_time)) < 0) {
436			paxwarn(1, "Illegal lower time range %s", str);
437			free(pt);
438			goto out;
439			}
440			pt->flgs \|= HASLOW;
441			}
442
443			if ((up_pt != NULL) && (*up_pt != '\0')) {
444			/*
445			* add upper limit
446			*/
447			if (str_sec(up_pt, &(pt->high_time)) < 0) {
448			paxwarn(1, "Illegal upper time range %s", up_pt);
449			free(pt);
450			goto out;
451			}
452			pt->flgs \|= HASHIGH;
453
454			/*
455			* check that the upper and lower do not overlap
456			*/
457			if (pt->flgs & HASLOW) {
458			if (pt->low_time > pt->high_time) {
459			paxwarn(1, "Upper %s and lower %s time overlap",
460			up_pt, str);
461			free(pt);
462			return(-1);
463			}
464			}
465			}
466
467			pt->fow = NULL;
468			if (trhead == NULL) {
469			trtail = trhead = pt;
470			return(0);
471			}
472			trtail->fow = pt;
473			trtail = pt;
474			return(0);
475
476			out:
477			paxwarn(1, "Time range format is: [[[[[cc]yy]mm]dd]HH]MM[.SS][/[c][m]]");
478			return(-1);
479			}
480
481			/*
482			* trng_match()
483			* check if this files mtime/ctime falls within any supplied time range.
484			* Return:
485			* 0 if this archive member should be processed, 1 if it should be skipped
486			*/
487
488			static int
489			trng_match(ARCHD *arcn)
490			{
491			TIME_RNG *pt;
492
493			/*
494			* have to search down the list one at a time looking for a match.
495			* remember time range limits are inclusive.
496			*/
497			pt = trhead;
498			while (pt != NULL) {
499			switch (pt->flgs & CMPBOTH) {
500			case CMPBOTH:
501			/*
502			* user wants both mtime and ctime checked for this
503			* time range
504			*/
505			if (((pt->flgs & HASLOW) &&
506			(arcn->sb.st_mtime < pt->low_time) &&
507			(arcn->sb.st_ctime < pt->low_time)) \|\|
508			((pt->flgs & HASHIGH) &&
509			(arcn->sb.st_mtime > pt->high_time) &&
510			(arcn->sb.st_ctime > pt->high_time))) {
511			pt = pt->fow;
512			continue;
513			}
514			break;
515			case CMPCTME:
516			/*
517			* user wants only ctime checked for this time range
518			*/
519			if (((pt->flgs & HASLOW) &&
520			(arcn->sb.st_ctime < pt->low_time)) \|\|
521			((pt->flgs & HASHIGH) &&
522			(arcn->sb.st_ctime > pt->high_time))) {
523			pt = pt->fow;
524			continue;
525			}
526			break;
527			case CMPMTME:
528			default:
529			/*
530			* user wants only mtime checked for this time range
531			*/
532			if (((pt->flgs & HASLOW) &&
533			(arcn->sb.st_mtime < pt->low_time)) \|\|
534			((pt->flgs & HASHIGH) &&
535			(arcn->sb.st_mtime > pt->high_time))) {
536			pt = pt->fow;
537			continue;
538			}
539			break;
540			}
541			break;
542			}
543
544			if (pt == NULL)
545			return(1);
546			return(0);
547			}
548
549			/*
550			* str_sec()
551			* Convert a time string in the format of [[[[[cc]yy]mm]dd]HH]MM[.SS] to
552			* seconds UTC. Tval already has current time loaded into it at entry.
553			* Return:
554			* 0 if converted ok, -1 otherwise
555			*/
556
557			static int
558			str_sec(const char p, time_t tval)
559			{
560			struct tm *lt;
561			const char dot, t;
562			size_t len;
563			int bigyear;
564			int yearset;
565
566			yearset = 0;
567			len = strlen(p);
568
569			for (t = p, dot = NULL; *t; ++t) {
570			if (isdigit((unsigned char)*t))
571			continue;
572			if (*t == '.' && dot == NULL) {
573			dot = t;
574			continue;
575			}
576			return(-1);
577			}
578
579			lt = localtime(tval);
580
581			if (dot != NULL) { /* .SS */
582			if (strlen(++dot) != 2)
583			return(-1);
584			lt->tm_sec = ATOI2(dot);
585			if (lt->tm_sec > 61)
586			return(-1);
587			len -= 3;
588			} else
589			lt->tm_sec = 0;
590
591			switch (len) {
592			case 12: /* cc */
593			bigyear = ATOI2(p);
594			lt->tm_year = (bigyear * 100) - 1900;
595			yearset = 1;
596			/* FALLTHROUGH */
597			case 10: /* yy */
598			if (yearset) {
599			lt->tm_year += ATOI2(p);
600			} else {
601			lt->tm_year = ATOI2(p);
602			if (lt->tm_year < 69) /* hack for 2000 ;-} */
603			lt->tm_year += (2000 - 1900);
604			}
605			/* FALLTHROUGH */
606			case 8: /* mm */
607			lt->tm_mon = ATOI2(p);
608			if ((lt->tm_mon > 12) \|\| !lt->tm_mon)
609			return(-1);
610			--lt->tm_mon; /* time struct is 0 - 11 */
611			/* FALLTHROUGH */
612			case 6: /* dd */
613			lt->tm_mday = ATOI2(p);
614			if ((lt->tm_mday > 31) \|\| !lt->tm_mday)
615			return(-1);
616			/* FALLTHROUGH */
617			case 4: /* HH */
618			lt->tm_hour = ATOI2(p);
619			if (lt->tm_hour > 23)
620			return(-1);
621			/* FALLTHROUGH */
622			case 2: /* MM */
623			lt->tm_min = ATOI2(p);
624			if (lt->tm_min > 59)
625			return(-1);
626			break;
627			default:
628			return(-1);
629			}
630
631			/* convert broken-down time to UTC clock time seconds */
632			if ((*tval = mktime(lt)) == -1)
633			return(-1);
634			return(0);
635			}