mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2024-11-24 09:13:37 +01:00
b1787dec81
are: * Implement cpio compatibility mode when pax is invoked as cpio * Extend tar compatibility mode to cover many of the GNU tar single-letter options (bzip2 mode, aka -y/-j is not present in OpenBSD). When invoked as tar, pax is now full-featured enough for use by the ports collection to extract distfiles and create packages. * Many bug fixes to the operation of pax and the tar compatibility modes * Code fixes for things like correct string buffer termination. I tried to preserve existing FreeBSD fixes to this utility; please let me know if I have inadvertently spammed something.
485 lines
10 KiB
C
485 lines
10 KiB
C
/*-
|
|
* 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
|
|
#if 0
|
|
static char sccsid[] = "@(#)cache.c 8.1 (Berkeley) 5/31/93";
|
|
#endif
|
|
static const char rcsid[] =
|
|
"$FreeBSD$";
|
|
#endif /* not lint */
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <string.h>
|
|
#include <stdio.h>
|
|
#include <pwd.h>
|
|
#include <grp.h>
|
|
#include <unistd.h>
|
|
#include <stdlib.h>
|
|
#include "pax.h"
|
|
#include "cache.h"
|
|
#include "extern.h"
|
|
|
|
/*
|
|
* routines that control user, group, uid and gid caches (for the archive
|
|
* member print routine).
|
|
* IMPORTANT:
|
|
* these routines cache BOTH hits and misses, a major performance improvement
|
|
*/
|
|
|
|
static int pwopn = 0; /* is password file open */
|
|
static int gropn = 0; /* is group file open */
|
|
static UIDC **uidtb = NULL; /* uid to name cache */
|
|
static GIDC **gidtb = NULL; /* gid to name cache */
|
|
static UIDC **usrtb = NULL; /* user name to uid cache */
|
|
static GIDC **grptb = NULL; /* group name to gid cache */
|
|
|
|
/*
|
|
* uidtb_start
|
|
* creates an an empty uidtb
|
|
* Return:
|
|
* 0 if ok, -1 otherwise
|
|
*/
|
|
|
|
#ifdef __STDC__
|
|
int
|
|
uidtb_start(void)
|
|
#else
|
|
int
|
|
uidtb_start()
|
|
#endif
|
|
{
|
|
static int fail = 0;
|
|
|
|
if (uidtb != NULL)
|
|
return(0);
|
|
if (fail)
|
|
return(-1);
|
|
if ((uidtb = (UIDC **)calloc(UID_SZ, sizeof(UIDC *))) == NULL) {
|
|
++fail;
|
|
paxwarn(1, "Unable to allocate memory for user id cache table");
|
|
return(-1);
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
/*
|
|
* gidtb_start
|
|
* creates an an empty gidtb
|
|
* Return:
|
|
* 0 if ok, -1 otherwise
|
|
*/
|
|
|
|
#ifdef __STDC__
|
|
int
|
|
gidtb_start(void)
|
|
#else
|
|
int
|
|
gidtb_start()
|
|
#endif
|
|
{
|
|
static int fail = 0;
|
|
|
|
if (gidtb != NULL)
|
|
return(0);
|
|
if (fail)
|
|
return(-1);
|
|
if ((gidtb = (GIDC **)calloc(GID_SZ, sizeof(GIDC *))) == NULL) {
|
|
++fail;
|
|
paxwarn(1, "Unable to allocate memory for group id cache table");
|
|
return(-1);
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
/*
|
|
* usrtb_start
|
|
* creates an an empty usrtb
|
|
* Return:
|
|
* 0 if ok, -1 otherwise
|
|
*/
|
|
|
|
#ifdef __STDC__
|
|
int
|
|
usrtb_start(void)
|
|
#else
|
|
int
|
|
usrtb_start()
|
|
#endif
|
|
{
|
|
static int fail = 0;
|
|
|
|
if (usrtb != NULL)
|
|
return(0);
|
|
if (fail)
|
|
return(-1);
|
|
if ((usrtb = (UIDC **)calloc(UNM_SZ, sizeof(UIDC *))) == NULL) {
|
|
++fail;
|
|
paxwarn(1, "Unable to allocate memory for user name cache table");
|
|
return(-1);
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
/*
|
|
* grptb_start
|
|
* creates an an empty grptb
|
|
* Return:
|
|
* 0 if ok, -1 otherwise
|
|
*/
|
|
|
|
#ifdef __STDC__
|
|
int
|
|
grptb_start(void)
|
|
#else
|
|
int
|
|
grptb_start()
|
|
#endif
|
|
{
|
|
static int fail = 0;
|
|
|
|
if (grptb != NULL)
|
|
return(0);
|
|
if (fail)
|
|
return(-1);
|
|
if ((grptb = (GIDC **)calloc(GNM_SZ, sizeof(GIDC *))) == NULL) {
|
|
++fail;
|
|
paxwarn(1,"Unable to allocate memory for group name cache table");
|
|
return(-1);
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
/*
|
|
* name_uid()
|
|
* caches the name (if any) for the uid. If frc set, we always return the
|
|
* the stored name (if valid or invalid match). We use a simple hash table.
|
|
* Return
|
|
* Pointer to stored name (or a empty string)
|
|
*/
|
|
|
|
#ifdef __STDC__
|
|
char *
|
|
name_uid(uid_t uid, int frc)
|
|
#else
|
|
char *
|
|
name_uid(uid, frc)
|
|
uid_t uid;
|
|
int frc;
|
|
#endif
|
|
{
|
|
register struct passwd *pw;
|
|
register UIDC *ptr;
|
|
|
|
if ((uidtb == NULL) && (uidtb_start() < 0))
|
|
return("");
|
|
|
|
/*
|
|
* see if we have this uid cached
|
|
*/
|
|
ptr = uidtb[uid % UID_SZ];
|
|
if ((ptr != NULL) && (ptr->valid > 0) && (ptr->uid == uid)) {
|
|
/*
|
|
* have an entry for this uid
|
|
*/
|
|
if (frc || (ptr->valid == VALID))
|
|
return(ptr->name);
|
|
return("");
|
|
}
|
|
|
|
/*
|
|
* No entry for this uid, we will add it
|
|
*/
|
|
if (!pwopn) {
|
|
setpassent(1);
|
|
++pwopn;
|
|
}
|
|
if (ptr == NULL)
|
|
ptr = (UIDC *)malloc(sizeof(UIDC));
|
|
|
|
if ((pw = getpwuid(uid)) == NULL) {
|
|
/*
|
|
* no match for this uid in the local password file
|
|
* a string that is the uid in numeric format
|
|
*/
|
|
if (ptr == NULL)
|
|
return("");
|
|
ptr->uid = uid;
|
|
ptr->valid = INVALID;
|
|
# ifdef NET2_STAT
|
|
(void)snprintf(ptr->name, sizeof(ptr->name), "%u", uid);
|
|
# else
|
|
(void)snprintf(ptr->name, sizeof(ptr->name), "%lu",
|
|
(unsigned long)uid);
|
|
# endif
|
|
if (frc == 0)
|
|
return("");
|
|
} else {
|
|
/*
|
|
* there is an entry for this uid in the password file
|
|
*/
|
|
if (ptr == NULL)
|
|
return(pw->pw_name);
|
|
ptr->uid = uid;
|
|
(void)strncpy(ptr->name, pw->pw_name, UNMLEN - 1);
|
|
ptr->name[UNMLEN-1] = '\0';
|
|
ptr->valid = VALID;
|
|
}
|
|
return(ptr->name);
|
|
}
|
|
|
|
/*
|
|
* name_gid()
|
|
* caches the name (if any) for the gid. If frc set, we always return the
|
|
* the stored name (if valid or invalid match). We use a simple hash table.
|
|
* Return
|
|
* Pointer to stored name (or a empty string)
|
|
*/
|
|
|
|
#ifdef __STDC__
|
|
char *
|
|
name_gid(gid_t gid, int frc)
|
|
#else
|
|
char *
|
|
name_gid(gid, frc)
|
|
gid_t gid;
|
|
int frc;
|
|
#endif
|
|
{
|
|
register struct group *gr;
|
|
register GIDC *ptr;
|
|
|
|
if ((gidtb == NULL) && (gidtb_start() < 0))
|
|
return("");
|
|
|
|
/*
|
|
* see if we have this gid cached
|
|
*/
|
|
ptr = gidtb[gid % GID_SZ];
|
|
if ((ptr != NULL) && (ptr->valid > 0) && (ptr->gid == gid)) {
|
|
/*
|
|
* have an entry for this gid
|
|
*/
|
|
if (frc || (ptr->valid == VALID))
|
|
return(ptr->name);
|
|
return("");
|
|
}
|
|
|
|
/*
|
|
* No entry for this gid, we will add it
|
|
*/
|
|
if (!gropn) {
|
|
setgroupent(1);
|
|
++gropn;
|
|
}
|
|
if (ptr == NULL)
|
|
ptr = (GIDC *)malloc(sizeof(GIDC));
|
|
|
|
if ((gr = getgrgid(gid)) == NULL) {
|
|
/*
|
|
* no match for this gid in the local group file, put in
|
|
* a string that is the gid in numeric format
|
|
*/
|
|
if (ptr == NULL)
|
|
return("");
|
|
ptr->gid = gid;
|
|
ptr->valid = INVALID;
|
|
# ifdef NET2_STAT
|
|
(void)snprintf(ptr->name, sizeof(ptr->name), "%u", gid);
|
|
# else
|
|
(void)snprintf(ptr->name, sizeof(ptr->name), "%lu",
|
|
(unsigned long)gid);
|
|
# endif
|
|
if (frc == 0)
|
|
return("");
|
|
} else {
|
|
/*
|
|
* there is an entry for this group in the group file
|
|
*/
|
|
if (ptr == NULL)
|
|
return(gr->gr_name);
|
|
ptr->gid = gid;
|
|
(void)strncpy(ptr->name, gr->gr_name, GNMLEN - 1);
|
|
ptr->name[GNMLEN-1] = '\0';
|
|
ptr->valid = VALID;
|
|
}
|
|
return(ptr->name);
|
|
}
|
|
|
|
/*
|
|
* uid_name()
|
|
* caches the uid for a given user name. We use a simple hash table.
|
|
* Return
|
|
* the uid (if any) for a user name, or a -1 if no match can be found
|
|
*/
|
|
|
|
#ifdef __STDC__
|
|
int
|
|
uid_name(char *name, uid_t *uid)
|
|
#else
|
|
int
|
|
uid_name(name, uid)
|
|
char *name;
|
|
uid_t *uid;
|
|
#endif
|
|
{
|
|
register struct passwd *pw;
|
|
register UIDC *ptr;
|
|
register int namelen;
|
|
|
|
/*
|
|
* return -1 for mangled names
|
|
*/
|
|
if (((namelen = strlen(name)) == 0) || (name[0] == '\0'))
|
|
return(-1);
|
|
if ((usrtb == NULL) && (usrtb_start() < 0))
|
|
return(-1);
|
|
|
|
/*
|
|
* look up in hash table, if found and valid return the uid,
|
|
* if found and invalid, return a -1
|
|
*/
|
|
ptr = usrtb[st_hash(name, namelen, UNM_SZ)];
|
|
if ((ptr != NULL) && (ptr->valid > 0) && !strcmp(name, ptr->name)) {
|
|
if (ptr->valid == INVALID)
|
|
return(-1);
|
|
*uid = ptr->uid;
|
|
return(0);
|
|
}
|
|
|
|
if (!pwopn) {
|
|
setpassent(1);
|
|
++pwopn;
|
|
}
|
|
|
|
if (ptr == NULL)
|
|
ptr = usrtb[st_hash(name, namelen, UNM_SZ)] =
|
|
(UIDC *)malloc(sizeof(UIDC));
|
|
|
|
/*
|
|
* no match, look it up, if no match store it as an invalid entry,
|
|
* or store the matching uid
|
|
*/
|
|
if (ptr == NULL) {
|
|
if ((pw = getpwnam(name)) == NULL)
|
|
return(-1);
|
|
*uid = pw->pw_uid;
|
|
return(0);
|
|
}
|
|
(void)strncpy(ptr->name, name, UNMLEN - 1);
|
|
ptr->name[UNMLEN-1] = '\0';
|
|
if ((pw = getpwnam(name)) == NULL) {
|
|
ptr->valid = INVALID;
|
|
return(-1);
|
|
}
|
|
ptr->valid = VALID;
|
|
*uid = ptr->uid = pw->pw_uid;
|
|
return(0);
|
|
}
|
|
|
|
/*
|
|
* gid_name()
|
|
* caches the gid for a given group name. We use a simple hash table.
|
|
* Return
|
|
* the gid (if any) for a group name, or a -1 if no match can be found
|
|
*/
|
|
|
|
#ifdef __STDC__
|
|
int
|
|
gid_name(char *name, gid_t *gid)
|
|
#else
|
|
int
|
|
gid_name(name, gid)
|
|
char *name;
|
|
gid_t *gid;
|
|
#endif
|
|
{
|
|
register struct group *gr;
|
|
register GIDC *ptr;
|
|
register int namelen;
|
|
|
|
/*
|
|
* return -1 for mangled names
|
|
*/
|
|
if (((namelen = strlen(name)) == 0) || (name[0] == '\0'))
|
|
return(-1);
|
|
if ((grptb == NULL) && (grptb_start() < 0))
|
|
return(-1);
|
|
|
|
/*
|
|
* look up in hash table, if found and valid return the uid,
|
|
* if found and invalid, return a -1
|
|
*/
|
|
ptr = grptb[st_hash(name, namelen, GID_SZ)];
|
|
if ((ptr != NULL) && (ptr->valid > 0) && !strcmp(name, ptr->name)) {
|
|
if (ptr->valid == INVALID)
|
|
return(-1);
|
|
*gid = ptr->gid;
|
|
return(0);
|
|
}
|
|
|
|
if (!gropn) {
|
|
setgroupent(1);
|
|
++gropn;
|
|
}
|
|
if (ptr == NULL)
|
|
ptr = grptb[st_hash(name, namelen, GID_SZ)] =
|
|
(GIDC *)malloc(sizeof(GIDC));
|
|
|
|
/*
|
|
* no match, look it up, if no match store it as an invalid entry,
|
|
* or store the matching gid
|
|
*/
|
|
if (ptr == NULL) {
|
|
if ((gr = getgrnam(name)) == NULL)
|
|
return(-1);
|
|
*gid = gr->gr_gid;
|
|
return(0);
|
|
}
|
|
|
|
(void)strncpy(ptr->name, name, GNMLEN - 1);
|
|
ptr->name[GNMLEN-1] = '\0';
|
|
if ((gr = getgrnam(name)) == NULL) {
|
|
ptr->valid = INVALID;
|
|
return(-1);
|
|
}
|
|
ptr->valid = VALID;
|
|
*gid = ptr->gid = gr->gr_gid;
|
|
return(0);
|
|
}
|