BSD 4.4 Lite bin Sources

1 files changed, 657 insertions, 0 deletions

diff --git a/bin/pax/sel_subs.c b/bin/pax/sel_subs.c
new file mode 100644
index 0000000..fa7cb85
--- /dev/null
+++ b/bin/pax/sel_subs.c
@@ -0,0 +1,657 @@
+/*-
+ * 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. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. 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.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)sel_subs.c	8.1 (Berkeley) 5/31/93";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/stat.h>
+#include <sys/param.h>
+#include <pwd.h>
+#include <grp.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <string.h>
+#include <strings.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include "pax.h"
+#include "sel_subs.h"
+#include "extern.h"
+
+static int str_sec __P((register char *, time_t *));
+static int usr_match __P((register ARCHD *));
+static int grp_match __P((register ARCHD *));
+static int trng_match __P((register 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 specfied uid, gid or time range
+ * Return:
+ *	0 if this archive member should be processed, 1 if it should be skipped
+ */
+
+#if __STDC__
+int
+sel_chk(register ARCHD *arcn)
+#else
+int
+sel_chk(arcn)
+	register ARCHD *arcn;
+#endif
+{
+	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 then name or the uid/gid starting with
+ * a # on the command line. A \# will eascape the #.
+ */
+
+/*
+ * usr_add()
+ *	add a user match to the user match hash table
+ * Return:
+ *	0 if added ok, -1 otherwise;
+ */
+
+#if __STDC__
+int
+usr_add(register char *str)
+#else
+int
+usr_add(str)
+	register char *str;
+#endif
+{
+	register u_int indx;
+	register USRT *pt;
+	register struct passwd *pw;
+	register uid_t uid;
+
+	/*
+	 * create the table if it doesn't exist
+	 */
+	if ((str == NULL) || (*str == '\0'))
+		return(-1);
+	if ((usrtb == NULL) &&
+ 	    ((usrtb = (USRT **)calloc(USR_TB_SZ, sizeof(USRT *))) == NULL)) {
+                warn(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) {
+                	warn(1, "Unable to find uid for user: %s", str);
+                	return(-1);
+		}
+		uid = (uid_t)pw->pw_uid;
+        } else
+#		ifdef NET2_STAT
+		uid = (uid_t)atoi(str+1);
+#		else
+		uid = (uid_t)strtoul(str+1, (char **)NULL, 10);
+#		endif
+	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 = (USRT *)malloc(sizeof(USRT))) != NULL) {
+		pt->uid = uid;
+		pt->fow = usrtb[indx];
+		usrtb[indx] = pt;
+		return(0);
+	}
+        warn(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
+ */
+
+#if __STDC__
+static int
+usr_match(register ARCHD *arcn)
+#else
+static int
+usr_match(arcn)
+	register ARCHD *arcn;
+#endif
+{
+	register 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;
+ */
+
+#if __STDC__
+int
+grp_add(register char *str)
+#else
+int
+grp_add(str)
+	register char *str;
+#endif
+{
+	register u_int indx;
+	register GRPT *pt;
+	register struct group *gr;
+	register gid_t gid;
+
+	/*
+	 * create the table if it doesn't exist
+	 */
+	if ((str == NULL) || (*str == '\0'))
+		return(-1);
+	if ((grptb == NULL) &&
+ 	    ((grptb = (GRPT **)calloc(GRP_TB_SZ, sizeof(GRPT *))) == NULL)) {
+                warn(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) {
+                	warn(1,"Cannot determine gid for group name: %s", str);
+                	return(-1);
+		}
+		gid = (gid_t)gr->gr_gid;
+        } else
+#		ifdef NET2_STAT
+		gid = (gid_t)atoi(str+1);
+#		else
+		gid = (gid_t)strtoul(str+1, (char **)NULL, 10);
+#		endif
+	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 = (GRPT *)malloc(sizeof(GRPT))) != NULL) {
+		pt->gid = gid;
+		pt->fow = grptb[indx];
+		grptb[indx] = pt;
+		return(0);
+	}
+        warn(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
+ */
+
+#if __STDC__
+static int
+grp_match(register ARCHD *arcn)
+#else
+static int
+grp_match(arcn)
+	register ARCHD *arcn;
+#endif
+{
+	register 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: [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
+ */
+
+#if __STDC__
+int
+trng_add(register char *str)
+#else
+int
+trng_add(str)
+	register char *str;
+#endif
+{
+	register TIME_RNG *pt;
+	register char *up_pt = NULL;
+	register char *stpt;
+	register char *flgpt;
+	register int dot = 0;
+
+	/*
+	 * throw out the badly formed time ranges
+	 */
+	if ((str == NULL) || (*str == '\0')) {
+		warn(1, "Empty time range string");
+		return(-1);
+	}
+
+	/*
+	 * locate optional flags suffix /{cm}.
+	 */
+	if ((flgpt = rindex(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;
+		}
+		warn(1, "Improperly specified time range: %s", str);
+		goto out;
+	}
+
+	/*
+	 * allocate space for the time range and store the limits
+	 */
+	if ((pt = (TIME_RNG *)malloc(sizeof(TIME_RNG))) == NULL) {
+		warn(1, "Unable to allocate memory for time range");
+		return(-1);
+	}
+
+	/*
+	 * by default we only will check file mtime, but usee 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:
+				warn(1, "Bad option %c with time range %s",
+				    *flgpt, str);
+				goto out;
+			}
+			++flgpt;
+		}
+	}
+
+	/*
+	 * start off with the current time
+	 */
+	pt->low_time = pt->high_time = time((time_t *)NULL);
+	if (*str != '\0') {
+		/*
+		 * add lower limit
+		 */
+		if (str_sec(str, &(pt->low_time)) < 0) {
+			warn(1, "Illegal lower time range %s", str);
+			(void)free((char *)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) {
+			warn(1, "Illegal upper time range %s", up_pt);
+			(void)free((char *)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) {
+				warn(1, "Upper %s and lower %s time overlap",
+					up_pt, str);
+				(void)free((char *)pt);
+				return(-1);
+			}
+		}
+	}
+
+	pt->fow = NULL;
+	if (trhead == NULL) {
+		trtail = trhead = pt;
+		return(0);
+	}
+	trtail->fow = pt;
+	trtail = pt;
+	return(0);
+
+    out:
+	warn(1, "Time range format is: [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
+ */
+
+#if __STDC__
+static int
+trng_match(register ARCHD *arcn)
+#else
+static int
+trng_match(arcn)
+	register ARCHD *arcn;
+#endif
+{
+	register 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 [yy[mm[dd[hh]]]]mm[.ss] to gmt
+ *	seconds. Tval already has current time loaded into it at entry.
+ * Return:
+ *	0 if converted ok, -1 otherwise
+ */
+
+#if __STDC__
+static int
+str_sec(register char *str, time_t *tval)
+#else
+static int
+str_sec(str, tval)
+	register char *str;
+	time_t *tval;
+#endif
+{
+	register struct tm *lt;
+	register char *dot = NULL;
+
+	lt = localtime(tval);
+	if ((dot = index(str, '.')) != NULL) {
+		/*
+		 * seconds (.ss)
+		 */
+		*dot++ = '\0';
+		if (strlen(dot) != 2)
+			return(-1);
+		if ((lt->tm_sec = ATOI2(dot)) > 61)
+			return(-1);
+	} else
+		lt->tm_sec = 0;
+
+	switch (strlen(str)) {
+	case 10:
+		/*
+		 * year (yy)
+		 * watch out for year 2000
+		 */
+		if ((lt->tm_year = ATOI2(str)) < 69)
+			lt->tm_year += 100;
+		str += 2;
+		/* FALLTHROUGH */
+	case 8:
+		/*
+		 * month (mm)
+		 * watch out months are from 0 - 11 internally
+		 */
+		if ((lt->tm_mon = ATOI2(str)) > 12)
+			return(-1);
+		--lt->tm_mon;
+		str += 2;
+		/* FALLTHROUGH */
+	case 6:
+		/*
+		 * day (dd)
+		 */
+		if ((lt->tm_mday = ATOI2(str)) > 31)
+			return(-1);
+		str += 2;
+		/* FALLTHROUGH */
+	case 4:
+		/*
+		 * hour (hh)
+		 */
+		if ((lt->tm_hour = ATOI2(str)) > 23)
+			return(-1);
+		str += 2;
+		/* FALLTHROUGH */
+	case 2:
+		/*
+		 * minute (mm)
+		 */
+		if ((lt->tm_min = ATOI2(str)) > 59)
+			return(-1);
+		break;
+	default:
+		return(-1);
+	}
+	/*
+	 * convert broken-down time to GMT clock time seconds
+	 */
+	if ((*tval = mktime(lt)) == -1)
+		return(-1);
+	return(0);
+}