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Remove iruserok()

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This commit is contained in:
Nicolas Williams
2017-10-12 22:59:29 -05:00
committed by Nico Williams
parent 3b8c762dd0
commit 8fae8a1826
4 changed files with 0 additions and 314 deletions
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21
cf/roken-frag.m4
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@@ -358,7 +358,6 @@ AC_BROKEN([ \
getusershell \
initgroups \
innetgr \
iruserok \
localtime_r \
lstat \
memmove \
@@ -511,26 +510,6 @@ AC_NEED_PROTO([#include <unistd.h>], gethostname)
AC_NEED_PROTO([#include <unistd.h>], mkstemp)
AC_NEED_PROTO([#include <unistd.h>], getusershell)
AC_NEED_PROTO([#include <unistd.h>], daemon)
AC_NEED_PROTO([
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif],
iruserok)
AC_NEED_PROTO([
#ifdef HAVE_SYS_TYPES_H

6
include/config.h.w32
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@@ -546,9 +546,6 @@ static const char *const rcsid[] = { (const char *)rcsid, "@(#)" msg }
/* Define if you have IPv6. */
#define HAVE_IPV6 1
/* Define if you have the function `iruserok'. */
/* #define HAVE_IRUSEROK 1 */
/* Define to 1 if you have the `issetugid' function. */
/* #undef HAVE_ISSETUGID */
@@ -1263,9 +1260,6 @@ static const char *const rcsid[] = { (const char *)rcsid, "@(#)" msg }
/* define if the system is missing a prototype for inet_aton() */
/* #undef NEED_INET_ATON_PROTO */
/* define if the system is missing a prototype for iruserok() */
/* #undef NEED_IRUSEROK_PROTO */
/* define if the system is missing a prototype for mkstemp() */
/* #define NEED_MKSTEMP_PROTO 1 */

281
lib/roken/iruserok.c
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@@ -1,281 +0,0 @@
/*
* Copyright (c) 1983, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* 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 <config.h>
#include <stdio.h>
#include <ctype.h>
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#ifdef HAVE_NETINET_IN6_H
#include <netinet/in6.h>
#endif
#ifdef HAVE_NETINET6_IN6_H
#include <netinet6/in6.h>
#endif
#ifdef HAVE_RPCSVC_YPCLNT_H
#include <rpcsvc/ypclnt.h>
#endif
#include "roken.h"
int __check_rhosts_file = 1;
char *__rcmd_errstr = 0;
/*
* Returns "true" if match, 0 if no match.
*/
static
int
__icheckhost(unsigned raddr, const char *lhost)
{
struct hostent *hp;
u_long laddr;
char **pp;
/* Try for raw ip address first. */
if (isdigit((unsigned char)*lhost)
&& (long)(laddr = inet_addr(lhost)) != -1)
return (raddr == laddr);
/* Better be a hostname. */
if ((hp = gethostbyname(lhost)) == NULL)
return (0);
/* Spin through ip addresses. */
for (pp = hp->h_addr_list; *pp; ++pp)
if (memcmp(&raddr, *pp, sizeof(u_long)) == 0)
return (1);
/* No match. */
return (0);
}
/*
* Returns 0 if ok, -1 if not ok.
*/
static
int
__ivaliduser(FILE *hostf, unsigned raddr, const char *luser,
const char *ruser)
{
char *user, *p;
int ch;
char buf[MaxHostNameLen + 128]; /* host + login */
char hname[MaxHostNameLen];
struct hostent *hp;
/* Presumed guilty until proven innocent. */
int userok = 0, hostok = 0;
#ifdef HAVE_YP_GET_DEFAULT_DOMAIN
char *ypdomain;
if (yp_get_default_domain(&ypdomain))
ypdomain = NULL;
#else
#define ypdomain NULL
#endif
/* We need to get the damn hostname back for netgroup matching. */
if ((hp = gethostbyaddr((char *)&raddr,
sizeof(u_long),
AF_INET)) == NULL)
return (-1);
strlcpy(hname, hp->h_name, sizeof(hname));
while (fgets(buf, sizeof(buf), hostf)) {
p = buf;
/* Skip lines that are too long. */
if (strchr(p, '\n') == NULL) {
while ((ch = getc(hostf)) != '\n' && ch != EOF);
continue;
}
if (*p == '\n' || *p == '#') {
/* comment... */
continue;
}
while (*p != '\n' && *p != ' ' && *p != '\t' && *p != '\0') {
if (isupper((unsigned char)*p))
*p = tolower((unsigned char)*p);
p++;
}
if (*p == ' ' || *p == '\t') {
*p++ = '\0';
while (*p == ' ' || *p == '\t')
p++;
user = p;
while (*p != '\n' && *p != ' ' &&
*p != '\t' && *p != '\0')
p++;
} else
user = p;
*p = '\0';
/*
* Do +/- and +@/-@ checking. This looks really nasty,
* but it matches SunOS's behavior so far as I can tell.
*/
switch(buf[0]) {
case '+':
if (!buf[1]) { /* '+' matches all hosts */
hostok = 1;
break;
}
if (buf[1] == '@') /* match a host by netgroup */
hostok = innetgr((char *)&buf[2],
(char *)&hname, NULL, ypdomain);
else /* match a host by addr */
hostok = __icheckhost(raddr,(char *)&buf[1]);
break;
case '-': /* reject '-' hosts and all their users */
if (buf[1] == '@') {
if (innetgr((char *)&buf[2],
(char *)&hname, NULL, ypdomain))
return(-1);
} else {
if (__icheckhost(raddr,(char *)&buf[1]))
return(-1);
}
break;
default: /* if no '+' or '-', do a simple match */
hostok = __icheckhost(raddr, buf);
break;
}
switch(*user) {
case '+':
if (!*(user+1)) { /* '+' matches all users */
userok = 1;
break;
}
if (*(user+1) == '@') /* match a user by netgroup */
userok = innetgr(user+2, NULL, (char *)ruser,
ypdomain);
else /* match a user by direct specification */
userok = !(strcmp(ruser, user+1));
break;
case '-': /* if we matched a hostname, */
if (hostok) { /* check for user field rejections */
if (!*(user+1))
return(-1);
if (*(user+1) == '@') {
if (innetgr(user+2, NULL,
(char *)ruser, ypdomain))
return(-1);
} else {
if (!strcmp(ruser, user+1))
return(-1);
}
}
break;
default: /* no rejections: try to match the user */
if (hostok)
userok = !(strcmp(ruser,*user ? user : luser));
break;
}
if (hostok && userok)
return(0);
}
return (-1);
}
/*
* New .rhosts strategy: We are passed an ip address. We spin through
* hosts.equiv and .rhosts looking for a match. When the .rhosts only
* has ip addresses, we don't have to trust a nameserver. When it
* contains hostnames, we spin through the list of addresses the nameserver
* gives us and look for a match.
*
* Returns 0 if ok, -1 if not ok.
*/
ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL
iruserok(unsigned raddr, int superuser, const char *ruser, const char *luser)
{
char *cp;
struct stat sbuf;
struct passwd *pwd;
FILE *hostf;
uid_t uid;
int first;
char pbuf[MaxPathLen];
first = 1;
hostf = superuser ? NULL : fopen(_PATH_HEQUIV, "r");
again:
if (hostf) {
if (__ivaliduser(hostf, raddr, luser, ruser) == 0) {
fclose(hostf);
return (0);
}
fclose(hostf);
}
if (first == 1 && (__check_rhosts_file || superuser)) {
first = 0;
if ((pwd = k_getpwnam((char*)luser)) == NULL)
return (-1);
snprintf (pbuf, sizeof(pbuf), "%s/.rhosts", pwd->pw_dir);
/*
* Change effective uid while opening .rhosts. If root and
* reading an NFS mounted file system, can't read files that
* are protected read/write owner only.
*/
uid = geteuid();
if (seteuid(pwd->pw_uid) < 0)
return (-1);
hostf = fopen(pbuf, "r");
seteuid(uid);
if (hostf == NULL)
return (-1);
/*
* If not a regular file, or is owned by someone other than
* user or root or if writeable by anyone but the owner, quit.
*/
cp = NULL;
if (lstat(pbuf, &sbuf) < 0)
cp = ".rhosts lstat failed";
else if (!S_ISREG(sbuf.st_mode))
cp = ".rhosts not regular file";
else if (fstat(fileno(hostf), &sbuf) < 0)
cp = ".rhosts fstat failed";
else if (sbuf.st_uid && sbuf.st_uid != pwd->pw_uid)
cp = "bad .rhosts owner";
else if (sbuf.st_mode & (S_IWGRP|S_IWOTH))
cp = ".rhosts writeable by other than owner";
/* If there were any problems, quit. */
if (cp) {
__rcmd_errstr = cp;
fclose(hostf);
return (-1);
}
goto again;
}
return (-1);
}

6
lib/roken/roken.h.in
View File

@@ -738,12 +738,6 @@ ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL innetgr(const char*, const char*,
const char*, const char*);
#endif
#ifndef HAVE_IRUSEROK
#define iruserok rk_iruserok
ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL iruserok(unsigned, int,
const char *, const char *);
#endif
#if !defined(HAVE_GETHOSTNAME) || defined(NEED_GETHOSTNAME_PROTO)
#ifndef HAVE_GETHOSTNAME
#define gethostname rk_gethostname