f67e4a8fc7
associated changes that had to happen to make this possible as well as bugs fixed along the way. Bring in required TLI library routines to support this. Since we don't support TLI we've essentially copied what NetBSD has done, adding a thin layer to emulate direct the TLI calls into BSD socket calls. This is mostly from Sun's tirpc release that was made in 1994, however some fixes were backported from the 1999 release (supposedly only made available after this porting effort was underway). The submitter has agreed to continue on and bring us up to the 1999 release. Several key features are introduced with this update: Client calls are thread safe. (1999 code has server side thread safe) Updated, a more modern interface. Many userland updates were done to bring the code up to par with the recent RPC API. There is an update to the pthreads library, a function pthread_main_np() was added to emulate a function of Sun's threads library. While we're at it, bring in NetBSD's lockd, it's been far too long of a wait. New rpcbind(8) replaces portmap(8) (supporting communication over an authenticated Unix-domain socket, and by default only allowing set and unset requests over that channel). It's much more secure than the old portmapper. Umount(8), mountd(8), mount_nfs(8), nfsd(8) have also been upgraded to support TI-RPC and to support IPV6. Umount(8) is also fixed to unmount pathnames longer than 80 chars, which are currently truncated by the Kernel statfs structure. Submitted by: Martin Blapp <mb@imp.ch> Manpage review: ru Secure RPC implemented by: wpaul
333 lines
7.3 KiB
C
333 lines
7.3 KiB
C
/*
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* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
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* unrestricted use provided that this legend is included on all tape
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* media and as a part of the software program in whole or part. Users
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* may copy or modify Sun RPC without charge, but are not authorized
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* to license or distribute it to anyone else except as part of a product or
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* program developed by the user or with the express written consent of
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* Sun Microsystems, Inc.
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*
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* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
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* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
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*
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* Sun RPC is provided with no support and without any obligation on the
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* part of Sun Microsystems, Inc. to assist in its use, correction,
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* modification or enhancement.
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*
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* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
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* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
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* OR ANY PART THEREOF.
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*
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* In no event will Sun Microsystems, Inc. be liable for any lost revenue
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* or profits or other special, indirect and consequential damages, even if
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* Sun has been advised of the possibility of such damages.
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*
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* Sun Microsystems, Inc.
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* 2550 Garcia Avenue
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* Mountain View, California 94043
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*
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* $FreeBSD$
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*/
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#if !defined(lint) && defined(SCCSIDS)
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static char sccsid[] = "@(#)netnamer.c 1.13 91/03/11 Copyr 1986 Sun Micro";
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#endif
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/*
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* netname utility routines convert from unix names to network names and
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* vice-versa This module is operating system dependent! What we define here
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* will work with any unix system that has adopted the sun NIS domain
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* architecture.
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*/
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#include "namespace.h"
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#include <sys/param.h>
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#include <rpc/rpc.h>
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#include <rpc/rpc_com.h>
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#ifdef YP
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#include <rpcsvc/yp_prot.h>
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#include <rpcsvc/ypclnt.h>
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#endif
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#include <ctype.h>
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#include <stdio.h>
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#include <grp.h>
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#include <pwd.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "un-namespace.h"
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static char *OPSYS = "unix";
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static char *NETID = "netid.byname";
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static char *NETIDFILE = "/etc/netid";
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static int getnetid __P(( char *, char * ));
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static int _getgroups __P(( char *, gid_t * ));
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#ifndef NGROUPS
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#define NGROUPS 16
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#endif
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/*
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* Convert network-name into unix credential
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*/
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int
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netname2user(netname, uidp, gidp, gidlenp, gidlist)
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char netname[MAXNETNAMELEN + 1];
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uid_t *uidp;
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gid_t *gidp;
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int *gidlenp;
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gid_t *gidlist;
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{
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char *p;
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int gidlen;
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uid_t uid;
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long luid;
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struct passwd *pwd;
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char val[1024];
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char *val1, *val2;
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char *domain;
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int vallen;
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int err;
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if (getnetid(netname, val)) {
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char *res = val;
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p = strsep(&res, ":");
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if (p == NULL)
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return (0);
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*uidp = (uid_t) atol(p);
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p = strsep(&res, "\n,");
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if (p == NULL) {
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return (0);
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}
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*gidp = (gid_t) atol(p);
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gidlen = 0;
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for (gidlen = 0; gidlen < NGROUPS; gidlen++) {
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p = strsep(&res, "\n,");
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if (p == NULL)
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break;
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gidlist[gidlen] = (gid_t) atol(p);
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}
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*gidlenp = gidlen;
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return (1);
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}
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val1 = strchr(netname, '.');
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if (val1 == NULL)
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return (0);
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if (strncmp(netname, OPSYS, (val1-netname)))
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return (0);
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val1++;
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val2 = strchr(val1, '@');
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if (val2 == NULL)
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return (0);
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vallen = val2 - val1;
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if (vallen > (1024 - 1))
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vallen = 1024 - 1;
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(void) strncpy(val, val1, 1024);
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val[vallen] = 0;
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err = _rpc_get_default_domain(&domain); /* change to rpc */
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if (err)
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return (0);
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if (strcmp(val2 + 1, domain))
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return (0); /* wrong domain */
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if (sscanf(val, "%ld", &luid) != 1)
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return (0);
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uid = luid;
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/* use initgroups method */
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pwd = getpwuid(uid);
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if (pwd == NULL)
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return (0);
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*uidp = pwd->pw_uid;
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*gidp = pwd->pw_gid;
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*gidlenp = _getgroups(pwd->pw_name, gidlist);
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return (1);
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}
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/*
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* initgroups
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*/
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static int
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_getgroups(uname, groups)
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char *uname;
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gid_t groups[NGROUPS];
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{
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gid_t ngroups = 0;
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register struct group *grp;
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register int i;
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register int j;
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int filter;
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setgrent();
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while ((grp = getgrent())) {
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for (i = 0; grp->gr_mem[i]; i++)
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if (!strcmp(grp->gr_mem[i], uname)) {
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if (ngroups == NGROUPS) {
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#ifdef DEBUG
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fprintf(stderr,
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"initgroups: %s is in too many groups\n", uname);
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#endif
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goto toomany;
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}
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/* filter out duplicate group entries */
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filter = 0;
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for (j = 0; j < ngroups; j++)
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if (groups[j] == grp->gr_gid) {
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filter++;
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break;
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}
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if (!filter)
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groups[ngroups++] = grp->gr_gid;
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}
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}
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toomany:
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endgrent();
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return (ngroups);
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}
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/*
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* Convert network-name to hostname
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*/
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int
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netname2host(netname, hostname, hostlen)
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char netname[MAXNETNAMELEN + 1];
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char *hostname;
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int hostlen;
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{
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int err;
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char valbuf[1024];
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char *val;
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char *val2;
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int vallen;
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char *domain;
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if (getnetid(netname, valbuf)) {
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val = valbuf;
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if ((*val == '0') && (val[1] == ':')) {
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(void) strncpy(hostname, val + 2, hostlen);
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return (1);
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}
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}
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val = strchr(netname, '.');
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if (val == NULL)
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return (0);
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if (strncmp(netname, OPSYS, (val - netname)))
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return (0);
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val++;
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val2 = strchr(val, '@');
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if (val2 == NULL)
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return (0);
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vallen = val2 - val;
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if (vallen > (hostlen - 1))
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vallen = hostlen - 1;
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(void) strncpy(hostname, val, vallen);
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hostname[vallen] = 0;
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err = _rpc_get_default_domain(&domain); /* change to rpc */
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if (err)
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return (0);
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if (strcmp(val2 + 1, domain))
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return (0); /* wrong domain */
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else
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return (1);
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}
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/*
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* reads the file /etc/netid looking for a + to optionally go to the
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* network information service.
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*/
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int
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getnetid(key, ret)
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char *key, *ret;
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{
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char buf[1024]; /* big enough */
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char *res;
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char *mkey;
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char *mval;
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FILE *fd;
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#ifdef YP
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char *domain;
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int err;
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char *lookup;
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int len;
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#endif
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fd = fopen(NETIDFILE, "r");
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if (fd == NULL) {
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#ifdef YP
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res = "+";
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goto getnetidyp;
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#else
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return (0);
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#endif
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}
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for (;;) {
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if (fd == NULL)
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return (0); /* getnetidyp brings us here */
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res = fgets(buf, sizeof(buf), fd);
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if (res == NULL) {
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fclose(fd);
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return (0);
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}
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if (res[0] == '#')
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continue;
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else if (res[0] == '+') {
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#ifdef YP
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getnetidyp:
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err = yp_get_default_domain(&domain);
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if (err) {
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continue;
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}
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lookup = NULL;
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err = yp_match(domain, NETID, key,
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strlen(key), &lookup, &len);
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if (err) {
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#ifdef DEBUG
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fprintf(stderr, "match failed error %d\n", err);
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#endif
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continue;
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}
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lookup[len] = 0;
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strcpy(ret, lookup);
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free(lookup);
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if (fd != NULL)
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fclose(fd);
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return (2);
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#else /* YP */
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#ifdef DEBUG
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fprintf(stderr,
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"Bad record in %s '+' -- NIS not supported in this library copy\n",
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NETIDFILE);
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#endif
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continue;
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#endif /* YP */
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} else {
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mkey = strsep(&res, "\t ");
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if (mkey == NULL) {
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fprintf(stderr,
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"Bad record in %s -- %s", NETIDFILE, buf);
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continue;
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}
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do {
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mval = strsep(&res, " \t#\n");
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} while (mval != NULL && !*mval);
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if (mval == NULL) {
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fprintf(stderr,
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"Bad record in %s val problem - %s", NETIDFILE, buf);
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continue;
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}
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if (strcmp(mkey, key) == 0) {
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strcpy(ret, mval);
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fclose(fd);
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return (1);
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}
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}
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}
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}
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