1*7c478bd9Sstevel@tonic-gate /*
2*7c478bd9Sstevel@tonic-gate  * CDDL HEADER START
3*7c478bd9Sstevel@tonic-gate  *
4*7c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*7c478bd9Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*7c478bd9Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*7c478bd9Sstevel@tonic-gate  * with the License.
8*7c478bd9Sstevel@tonic-gate  *
9*7c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*7c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*7c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*7c478bd9Sstevel@tonic-gate  * and limitations under the License.
13*7c478bd9Sstevel@tonic-gate  *
14*7c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*7c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*7c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*7c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*7c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*7c478bd9Sstevel@tonic-gate  *
20*7c478bd9Sstevel@tonic-gate  * CDDL HEADER END
21*7c478bd9Sstevel@tonic-gate  */
22*7c478bd9Sstevel@tonic-gate /*
23*7c478bd9Sstevel@tonic-gate  * Copyright (c) 1992-1995, by Sun Microsystems, Inc.
24*7c478bd9Sstevel@tonic-gate  * All rights reserved.
25*7c478bd9Sstevel@tonic-gate  */
26*7c478bd9Sstevel@tonic-gate 
27*7c478bd9Sstevel@tonic-gate #pragma	ident	"%Z%%M%	%I%	%E% SMI"
28*7c478bd9Sstevel@tonic-gate 
29*7c478bd9Sstevel@tonic-gate #include <security/pam_appl.h>
30*7c478bd9Sstevel@tonic-gate #include <string.h>
31*7c478bd9Sstevel@tonic-gate #include <stdlib.h>
32*7c478bd9Sstevel@tonic-gate #include <malloc.h>
33*7c478bd9Sstevel@tonic-gate 
34*7c478bd9Sstevel@tonic-gate #include "sample_utils.h"
35*7c478bd9Sstevel@tonic-gate 
36*7c478bd9Sstevel@tonic-gate /* ******************************************************************** */
37*7c478bd9Sstevel@tonic-gate /*									*/
38*7c478bd9Sstevel@tonic-gate /* 		Utilities Functions					*/
39*7c478bd9Sstevel@tonic-gate /*									*/
40*7c478bd9Sstevel@tonic-gate /* ******************************************************************** */
41*7c478bd9Sstevel@tonic-gate 
42*7c478bd9Sstevel@tonic-gate /*
43*7c478bd9Sstevel@tonic-gate  * __free_msg():
44*7c478bd9Sstevel@tonic-gate  *	free storage for messages used in the call back "pam_conv" functions
45*7c478bd9Sstevel@tonic-gate  */
46*7c478bd9Sstevel@tonic-gate 
47*7c478bd9Sstevel@tonic-gate void
__free_msg(num_msg,msg)48*7c478bd9Sstevel@tonic-gate __free_msg(num_msg, msg)
49*7c478bd9Sstevel@tonic-gate 	int num_msg;
50*7c478bd9Sstevel@tonic-gate 	struct pam_message *msg;
51*7c478bd9Sstevel@tonic-gate {
52*7c478bd9Sstevel@tonic-gate 	int 			i;
53*7c478bd9Sstevel@tonic-gate 	struct pam_message 	*m;
54*7c478bd9Sstevel@tonic-gate 
55*7c478bd9Sstevel@tonic-gate 	if (msg) {
56*7c478bd9Sstevel@tonic-gate 		m = msg;
57*7c478bd9Sstevel@tonic-gate 		for (i = 0; i < num_msg; i++, m++) {
58*7c478bd9Sstevel@tonic-gate 			if (m->msg)
59*7c478bd9Sstevel@tonic-gate 				free(m->msg);
60*7c478bd9Sstevel@tonic-gate 		}
61*7c478bd9Sstevel@tonic-gate 		free(msg);
62*7c478bd9Sstevel@tonic-gate 	}
63*7c478bd9Sstevel@tonic-gate }
64*7c478bd9Sstevel@tonic-gate 
65*7c478bd9Sstevel@tonic-gate /*
66*7c478bd9Sstevel@tonic-gate  * __free_resp():
67*7c478bd9Sstevel@tonic-gate  *	free storage for responses used in the call back "pam_conv" functions
68*7c478bd9Sstevel@tonic-gate  */
69*7c478bd9Sstevel@tonic-gate 
70*7c478bd9Sstevel@tonic-gate void
__free_resp(num_msg,resp)71*7c478bd9Sstevel@tonic-gate __free_resp(num_msg, resp)
72*7c478bd9Sstevel@tonic-gate 	int num_msg;
73*7c478bd9Sstevel@tonic-gate 	struct pam_response *resp;
74*7c478bd9Sstevel@tonic-gate {
75*7c478bd9Sstevel@tonic-gate 	int			i;
76*7c478bd9Sstevel@tonic-gate 	struct pam_response	*r;
77*7c478bd9Sstevel@tonic-gate 
78*7c478bd9Sstevel@tonic-gate 	if (resp) {
79*7c478bd9Sstevel@tonic-gate 		r = resp;
80*7c478bd9Sstevel@tonic-gate 		for (i = 0; i < num_msg; i++, r++) {
81*7c478bd9Sstevel@tonic-gate 			if (r->resp)
82*7c478bd9Sstevel@tonic-gate 				free(r->resp);
83*7c478bd9Sstevel@tonic-gate 		}
84*7c478bd9Sstevel@tonic-gate 		free(resp);
85*7c478bd9Sstevel@tonic-gate 	}
86*7c478bd9Sstevel@tonic-gate }
87*7c478bd9Sstevel@tonic-gate 
88*7c478bd9Sstevel@tonic-gate /*
89*7c478bd9Sstevel@tonic-gate  * __display_errmsg():
90*7c478bd9Sstevel@tonic-gate  *	display error message by calling the call back functions
91*7c478bd9Sstevel@tonic-gate  *	provided by the application through "pam_conv" structure
92*7c478bd9Sstevel@tonic-gate  */
93*7c478bd9Sstevel@tonic-gate 
94*7c478bd9Sstevel@tonic-gate int
95*7c478bd9Sstevel@tonic-gate __display_errmsg(conv_funp, num_msg, messages, conv_apdp)
96*7c478bd9Sstevel@tonic-gate 	int (*conv_funp)();
97*7c478bd9Sstevel@tonic-gate 	int num_msg;
98*7c478bd9Sstevel@tonic-gate 	char messages[PAM_MAX_NUM_MSG][PAM_MAX_MSG_SIZE];
99*7c478bd9Sstevel@tonic-gate 	void *conv_apdp;
100*7c478bd9Sstevel@tonic-gate {
101*7c478bd9Sstevel@tonic-gate 	struct pam_message	*msg;
102*7c478bd9Sstevel@tonic-gate 	struct pam_message	*m;
103*7c478bd9Sstevel@tonic-gate 	struct pam_response	*resp;
104*7c478bd9Sstevel@tonic-gate 	int			i;
105*7c478bd9Sstevel@tonic-gate 	int			k;
106*7c478bd9Sstevel@tonic-gate 	int			retcode;
107*7c478bd9Sstevel@tonic-gate 
108*7c478bd9Sstevel@tonic-gate 	msg = (struct pam_message *)calloc(num_msg,
109*7c478bd9Sstevel@tonic-gate 					sizeof (struct pam_message));
110*7c478bd9Sstevel@tonic-gate 	if (msg == NULL) {
111*7c478bd9Sstevel@tonic-gate 		return (PAM_CONV_ERR);
112*7c478bd9Sstevel@tonic-gate 	}
113*7c478bd9Sstevel@tonic-gate 	m = msg;
114*7c478bd9Sstevel@tonic-gate 
115*7c478bd9Sstevel@tonic-gate 	i = 0;
116*7c478bd9Sstevel@tonic-gate 	k = num_msg;
117*7c478bd9Sstevel@tonic-gate 	resp = NULL;
118*7c478bd9Sstevel@tonic-gate 	while (k--) {
119*7c478bd9Sstevel@tonic-gate 		/*
120*7c478bd9Sstevel@tonic-gate 		 * fill out the pam_message structure to display error message
121*7c478bd9Sstevel@tonic-gate 		 */
122*7c478bd9Sstevel@tonic-gate 		m->msg_style = PAM_ERROR_MSG;
123*7c478bd9Sstevel@tonic-gate 		m->msg = (char *)malloc(PAM_MAX_MSG_SIZE);
124*7c478bd9Sstevel@tonic-gate 		if (m->msg != NULL)
125*7c478bd9Sstevel@tonic-gate 			(void) strcpy(m->msg, (const char *)messages[i]);
126*7c478bd9Sstevel@tonic-gate 		else
127*7c478bd9Sstevel@tonic-gate 			continue;
128*7c478bd9Sstevel@tonic-gate 		m++;
129*7c478bd9Sstevel@tonic-gate 		i++;
130*7c478bd9Sstevel@tonic-gate 	}
131*7c478bd9Sstevel@tonic-gate 
132*7c478bd9Sstevel@tonic-gate 	/*
133*7c478bd9Sstevel@tonic-gate 	 * Call conv function to display the message,
134*7c478bd9Sstevel@tonic-gate 	 * ignoring return value for now
135*7c478bd9Sstevel@tonic-gate 	 */
136*7c478bd9Sstevel@tonic-gate 	retcode = conv_funp(num_msg, &msg, &resp, conv_apdp);
137*7c478bd9Sstevel@tonic-gate 	__free_msg(num_msg, msg);
138*7c478bd9Sstevel@tonic-gate 	__free_resp(num_msg, resp);
139*7c478bd9Sstevel@tonic-gate 	return (retcode);
140*7c478bd9Sstevel@tonic-gate }
141*7c478bd9Sstevel@tonic-gate 
142*7c478bd9Sstevel@tonic-gate /*
143*7c478bd9Sstevel@tonic-gate  * __get_authtok():
144*7c478bd9Sstevel@tonic-gate  *	get authentication token by calling the call back functions
145*7c478bd9Sstevel@tonic-gate  *	provided by the application through "pam_conv" structure
146*7c478bd9Sstevel@tonic-gate  */
147*7c478bd9Sstevel@tonic-gate 
148*7c478bd9Sstevel@tonic-gate int
149*7c478bd9Sstevel@tonic-gate __get_authtok(conv_funp, num_msg, messages, conv_apdp, ret_respp)
150*7c478bd9Sstevel@tonic-gate 	int (*conv_funp)();
151*7c478bd9Sstevel@tonic-gate 	int num_msg;
152*7c478bd9Sstevel@tonic-gate 	char messages[PAM_MAX_NUM_MSG][PAM_MAX_MSG_SIZE];
153*7c478bd9Sstevel@tonic-gate 	void *conv_apdp;
154*7c478bd9Sstevel@tonic-gate 	struct pam_response	**ret_respp;
155*7c478bd9Sstevel@tonic-gate {
156*7c478bd9Sstevel@tonic-gate 	struct pam_message	*msg;
157*7c478bd9Sstevel@tonic-gate 	struct pam_message	*m;
158*7c478bd9Sstevel@tonic-gate 	int			i;
159*7c478bd9Sstevel@tonic-gate 	int			k;
160*7c478bd9Sstevel@tonic-gate 	int			retcode;
161*7c478bd9Sstevel@tonic-gate 
162*7c478bd9Sstevel@tonic-gate 	i = 0;
163*7c478bd9Sstevel@tonic-gate 	k = num_msg;
164*7c478bd9Sstevel@tonic-gate 
165*7c478bd9Sstevel@tonic-gate 	msg = (struct pam_message *)calloc(num_msg,
166*7c478bd9Sstevel@tonic-gate 						sizeof (struct pam_message));
167*7c478bd9Sstevel@tonic-gate 	if (msg == NULL) {
168*7c478bd9Sstevel@tonic-gate 		return (PAM_CONV_ERR);
169*7c478bd9Sstevel@tonic-gate 	}
170*7c478bd9Sstevel@tonic-gate 	m = msg;
171*7c478bd9Sstevel@tonic-gate 
172*7c478bd9Sstevel@tonic-gate 	while (k--) {
173*7c478bd9Sstevel@tonic-gate 		/*
174*7c478bd9Sstevel@tonic-gate 		 * fill out the message structure to display error message
175*7c478bd9Sstevel@tonic-gate 		 */
176*7c478bd9Sstevel@tonic-gate 		m->msg_style = PAM_PROMPT_ECHO_OFF;
177*7c478bd9Sstevel@tonic-gate 		m->msg = (char *)malloc(PAM_MAX_MSG_SIZE);
178*7c478bd9Sstevel@tonic-gate 		if (m->msg != NULL)
179*7c478bd9Sstevel@tonic-gate 			(void) strcpy(m->msg, (char *)messages[i]);
180*7c478bd9Sstevel@tonic-gate 		else
181*7c478bd9Sstevel@tonic-gate 			continue;
182*7c478bd9Sstevel@tonic-gate 		m++;
183*7c478bd9Sstevel@tonic-gate 		i++;
184*7c478bd9Sstevel@tonic-gate 	}
185*7c478bd9Sstevel@tonic-gate 
186*7c478bd9Sstevel@tonic-gate 	/*
187*7c478bd9Sstevel@tonic-gate 	 * Call conv function to display the prompt,
188*7c478bd9Sstevel@tonic-gate 	 * ignoring return value for now
189*7c478bd9Sstevel@tonic-gate 	 */
190*7c478bd9Sstevel@tonic-gate 	retcode = conv_funp(num_msg, &msg, ret_respp, conv_apdp);
191*7c478bd9Sstevel@tonic-gate 	__free_msg(num_msg, msg);
192*7c478bd9Sstevel@tonic-gate 	return (retcode);
193*7c478bd9Sstevel@tonic-gate }
194