usr/src/cmd/gss/gssd/gssd_generic.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 1988-1997, by Sun Microsystems, Inc.
  24  * All rights reserved.
  25  */
  26
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29 #include <stdio.h>
  30 #include <stdlib.h>
  31 #include <rpc/rpc.h>
  32 #include <errno.h>
  33 #include <syslog.h>
  34 #include <rpc/nettype.h>
  35 #include <netconfig.h>
  36 #include <netdir.h>
  37 #include <tiuser.h>
  38 #include <fcntl.h>
  39 #include <string.h>
  40 #include <rpc/svc.h>
  41 #include <locale.h>
  42
  43 extern int __rpc_negotiate_uid(int);
  44
  45 /*
  46  * The highest level interface for server creation.
  47  * Copied from svc_generic.c and cmd/keyserv/key_generic.c, but adapted
  48  * to work only for TPI_CLTS semantics, and to be called only once
  49  * from gssd.c. Returns 1 (interface created) on success and 0
  50  * (no interfaces created) on failure.
  51  */
  52 int
  53 svc_create_local_service(dispatch, prognum, versnum, nettype, servname)
  54 void (*dispatch) ();            /* Dispatch function */
  55 u_long prognum;                 /* Program number */
  56 u_long versnum;                 /* Version number */
  57 char *nettype;                  /* Networktype token */
  58 char *servname;                 /* name of the service */
  59 {
  60         int num = 0;
  61         SVCXPRT *xprt;
  62         struct netconfig *nconf;
  63         struct t_bind *bind_addr;
  64         void *net;
  65         int fd;
  66         struct nd_hostserv ns;
  67         struct nd_addrlist *nas;
  68
  69         if ((net = __rpc_setconf(nettype)) == 0) {
  70                 (void) syslog(LOG_ERR,
  71                 gettext("svc_create: could not read netconfig database"));
  72                 return (0);
  73         }
  74         while (nconf = __rpc_getconf(net)) {
  75                 if ((strcmp(nconf->nc_protofmly, NC_LOOPBACK)) ||
  76                                 (nconf->nc_semantics != NC_TPI_COTS_ORD))
  77                         continue;
  78
  79                 if ((fd = t_open(nconf->nc_device, O_RDWR, NULL)) < 0) {
  80                         (void) syslog(LOG_ERR,
  81                         gettext("svc_create: %s: cannot open connection: %s"),
  82                                 nconf->nc_netid, t_errlist[t_errno]);
  83                         break;
  84                 }
  85
  86                 /*
  87                  * Negotiate for returning the uid of the caller.
  88                  * This should be done before enabling the endpoint for
  89                  * service via t_bind() (called in svc_tli_create())
  90                  * so that requests to gssd contain the uid.
  91                  */
  92                 if (__rpc_negotiate_uid(fd) != 0) {
  93                         syslog(LOG_ERR,
  94                         gettext("Could not negotiate for"
  95                                 " uid with loopback transport %s"),
  96                                 nconf->nc_netid);
  97                         t_close(fd);
  98                         break;
  99                 }
 100
 101                 /* LINTED pointer alignment */
 102                 bind_addr = (struct t_bind *) t_alloc(fd, T_BIND, T_ADDR);
 103                 if ((bind_addr == NULL)) {
 104                         (void) t_close(fd);
 105                         (void) syslog(LOG_ERR,
 106                                 gettext("svc_create: t_alloc failed\n"));
 107                         break;
 108                 }
 109                 ns.h_host = HOST_SELF;
 110                 ns.h_serv = servname;
 111                 if (!netdir_getbyname(nconf, &ns, &nas)) {
 112                         /* Copy the address */
 113                         bind_addr->addr.len = nas->n_addrs->len;
 114                         (void) memcpy(bind_addr->addr.buf, nas->n_addrs->buf,
 115                                 (int) nas->n_addrs->len);
 116                         bind_addr->qlen = 8;
 117                         netdir_free((char *) nas, ND_ADDRLIST);
 118                 } else {
 119                         (void) syslog(LOG_ERR,
 120                         gettext("svc_create: no well known "
 121                                 "address for %s on %s\n"),
 122                                 servname, nconf->nc_netid);
 123                         (void) t_free((char *) bind_addr, T_BIND);
 124                         bind_addr = NULL;
 125                 }
 126
 127                 xprt = svc_tli_create(fd, nconf, bind_addr, 0, 0);
 128                 if (bind_addr)
 129                         (void) t_free((char *) bind_addr, T_BIND);
 130                 if (xprt == NULL) {
 131                         (void) t_close(fd);
 132                         (void) syslog(LOG_ERR,
 133                             gettext("svc_create: svc_tli_create failed\n"));
 134                         break;
 135                 } else {
 136                         (void) rpcb_unset(prognum, versnum, nconf);
 137                         if (svc_reg(xprt, prognum, versnum, dispatch, nconf)
 138                                         == FALSE) {
 139                                 (void) syslog(LOG_ERR,
 140                                 gettext("svc_create: cannot"
 141                                         " register %d vers %d on %s"),
 142                                         prognum, versnum, nconf->nc_netid);
 143                                 SVC_DESTROY(xprt);      /* also t_closes fd */
 144                                 break;
 145                         }
 146                         num = 1;
 147                         break;
 148                 }
 149         }
 150         __rpc_endconf(net);
 151         return (num);
 152 }