diff options
Diffstat (limited to 'crypto/kerberosIV/lib/roken/iruserok.c')
| -rw-r--r-- | crypto/kerberosIV/lib/roken/iruserok.c | 294 |
1 files changed, 0 insertions, 294 deletions
diff --git a/crypto/kerberosIV/lib/roken/iruserok.c b/crypto/kerberosIV/lib/roken/iruserok.c deleted file mode 100644 index 7cac29f..0000000 --- a/crypto/kerberosIV/lib/roken/iruserok.c +++ /dev/null @@ -1,294 +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. 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. - */ - -#ifdef HAVE_CONFIG_H -#include <config.h> -RCSID("$Id: iruserok.c,v 1.22 1999/09/16 20:06:06 assar Exp $"); -#endif - -#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 - -#ifdef HAVE_NETDB_H -#include <netdb.h> -#endif -#ifdef HAVE_ARPA_INET_H -#include <arpa/inet.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. - */ -int -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(); - seteuid(pwd->pw_uid); - 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); -} |
