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      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 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     23 
     24 /*
     25  * rusers_simple.c
     26  * These are the "easy to use" interfaces to rusers.
     27  *
     28  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
     29  * Use is subject to license terms.
     30  */
     31 
     32 #include <string.h>
     33 #include <rpc/rpc.h>
     34 #include <rpcsvc/rusers.h>
     35 #include <stdlib.h>
     36 
     37 int
     38 rusers3(host, uap)
     39 	char *host;
     40 	utmp_array *uap;
     41 {
     42 	struct utmpidlearr up;
     43 
     44 	if (rpc_call(host, RUSERSPROG, RUSERSVERS_3, RUSERSPROC_NAMES,
     45 			xdr_void, (char *) NULL,
     46 			xdr_utmp_array, (char *) uap, (char *) NULL) != 0) {
     47 		/*
     48 		 * If version 3 isn't available, try version 2.  We'll have to
     49 		 * convert a utmpidlearr structure into a utmp_array.
     50 		 */
     51 		up.uia_cnt = 0;
     52 		up.uia_arr = NULL;
     53 		if (rusers(host, &up) != 0)
     54 			return (-1);
     55 		else {
     56 			int i;
     57 			struct ru_utmp forsize;
     58 			rusers_utmp *rutp;
     59 
     60 			uap->utmp_array_val = (rusers_utmp *)malloc(up.uia_cnt
     61 				* sizeof (rusers_utmp));
     62 			if (uap->utmp_array_val == NULL) {
     63 				xdr_free(xdr_utmpidlearr, (char *)&up);
     64 				return (-1);
     65 			}
     66 			uap->utmp_array_len = up.uia_cnt;
     67 			for (rutp = uap->utmp_array_val, i = 0;
     68 				i < up.uia_cnt; rutp++, i++) {
     69 				rutp->ut_line = (char *)malloc(sizeof
     70 					(forsize.ut_line)+1);
     71 				rutp->ut_user = (char *)malloc(sizeof
     72 					(forsize.ut_name)+1);
     73 				rutp->ut_host = (char *)malloc(sizeof
     74 					(forsize.ut_host)+1);
     75 				if (rutp->ut_line == NULL ||
     76 					rutp->ut_user == NULL ||
     77 					rutp->ut_host == NULL) {
     78 
     79                                         while (--rutp >= uap->utmp_array_val) {
     80 						free(rutp->ut_line);
     81 						free(rutp->ut_user);
     82 						free(rutp->ut_host);
     83 					}
     84 					free(uap->utmp_array_val);
     85 					xdr_free(xdr_utmpidlearr, (char *)&up);
     86 					return (-1);
     87 				}
     88 				strncpy(rutp->ut_line,
     89 					up.uia_arr[i]->ui_utmp.ut_line,
     90 					sizeof (forsize.ut_line)+1);
     91 				strncpy(rutp->ut_user,
     92 					up.uia_arr[i]->ui_utmp.ut_name,
     93 					sizeof (forsize.ut_name)+1);
     94 				strncpy(rutp->ut_host,
     95 					up.uia_arr[i]->ui_utmp.ut_host,
     96 					sizeof (forsize.ut_host)+1);
     97 				rutp->ut_idle = up.uia_arr[i]->ui_idle;
     98 				rutp->ut_time = up.uia_arr[i]->ui_utmp.ut_time;
     99 				rutp->ut_type = RUSERS_USER_PROCESS;
    100 							/* assume this */
    101 			}
    102 			xdr_free(xdr_utmpidlearr, (char *)&up);
    103 		}
    104 	}
    105 	return (0);
    106 }
    107 
    108 int
    109 rnusers(host)
    110 	char *host;
    111 {
    112 	int nusers;
    113 
    114 	if (rpc_call(host, RUSERSPROG, RUSERSVERS_3, RUSERSPROC_NUM,
    115 			xdr_void, (char *) NULL,
    116 			xdr_u_int, (char *) &nusers, (char *) NULL) != 0) {
    117 		if (rpc_call(host, RUSERSPROG, RUSERSVERS_IDLE, RUSERSPROC_NUM,
    118 			xdr_void, (char *) NULL,
    119 			xdr_u_int, (char *) &nusers, (char *) NULL) != 0)
    120 		return (-1);
    121 	}
    122 	return (nusers);
    123 }
    124 
    125 enum clnt_stat
    126 rusers(host, up)
    127 	char *host;
    128 	struct utmpidlearr *up;
    129 {
    130 	return (rpc_call(host, RUSERSPROG, RUSERSVERS_IDLE, RUSERSPROC_NAMES,
    131 			xdr_void, (char *) NULL,
    132 			xdr_utmpidlearr, (char *) up, (char *) NULL));
    133 }
    134 
    135