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 2003 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27#pragma ident	"%Z%%M%	%I%	%E% SMI"
28
29#include <pthread.h>
30#include <stdlib.h>
31#include <security/cryptoki.h>
32#include "pkcs11Global.h"
33#include "pkcs11Slot.h"
34#include "pkcs11Session.h"
35
36
37/*
38 * pkcs11_session_add:
39 * Create a session and add it to the list of sessions associated
40 * with the slot it is being opened on.  The session handle, fwsessionp,
41 * will be the memory address of the session, typecast to a CK_SESSION_HANDLE.
42 *
43 * Assumptions: slotp is a valid slot, mutexes are not held, and
44 * the provider already successfully opened related session.
45 */
46CK_RV
47pkcs11_session_add(pkcs11_slot_t *slotp, CK_SLOT_ID slot_id,
48    CK_SESSION_HANDLE_PTR fwsessionp, CK_SESSION_HANDLE prov_sess)
49{
50
51	pkcs11_session_t *newhandle = malloc(sizeof (pkcs11_session_t));
52
53	if (newhandle == NULL) {
54		return (CKR_HOST_MEMORY);
55	}
56
57	newhandle->se_magic = PKCS11_SESSION_MAGIC;
58	newhandle->se_handle = prov_sess;
59	newhandle->se_slotid = slot_id;
60
61	(void) pthread_mutex_lock(&slotp->sl_mutex);
62
63	/* Insert the new session in the front of the slot's session list */
64	if (slotp->sl_sess_list == NULL) {
65		slotp->sl_sess_list = newhandle;
66		newhandle->se_prev = NULL;
67		newhandle->se_next = NULL;
68	} else {
69		slotp->sl_sess_list->se_prev = newhandle;
70		newhandle->se_next = slotp->sl_sess_list;
71		newhandle->se_prev = NULL;
72		slotp->sl_sess_list = newhandle;
73	}
74
75	/* Typecast the address of session structure to a session handle */
76	*fwsessionp = (CK_SESSION_HANDLE)newhandle;
77
78	(void) pthread_mutex_unlock(&slotp->sl_mutex);
79
80	return (CKR_OK);
81}
82
83/*
84 * pkcs11_session_delete:
85 * Delete a session from a particular slot's session list.
86 *
87 * Assumptions: slotp is a valid slot, sessp is a valid session,
88 * provider has already successfully closed this session, and
89 * mutexes are not held.
90 */
91void
92pkcs11_session_delete(pkcs11_slot_t *slotp, pkcs11_session_t *sessp)
93{
94
95	/* Acquire the slot's lock */
96	(void) pthread_mutex_lock(&slotp->sl_mutex);
97
98	if (slotp->sl_sess_list == sessp) {
99		/* This is the first session in the list */
100		if (sessp->se_next != NULL) {
101			slotp->sl_sess_list = sessp->se_next;
102			sessp->se_next->se_prev = NULL;
103		} else {
104			/* Session is the only one in the list */
105			slotp->sl_sess_list = NULL;
106		}
107	} else {
108		/* Session is not the first one in the list */
109		if (sessp->se_next != NULL) {
110			/* Session is in the middle of the list */
111			sessp->se_prev->se_next = sessp->se_next;
112			sessp->se_next->se_prev = sessp->se_prev;
113		} else {
114			/* Session is the last one in the list */
115			sessp->se_prev->se_next = NULL;
116		}
117	}
118
119	/* Mark session as no longer valid */
120	sessp->se_magic = 0;
121
122	free(sessp);
123
124	(void) pthread_mutex_unlock(&slotp->sl_mutex);
125
126}
127
128/*
129 * pkcs11_sessionlist_delete:
130 * Delete all sessions associated with a particular slot's session list.
131 *
132 * Assumptions: slotp is a valid slot, no mutexes are held, and the
133 * sessions were successfully closed with the provider already.
134 */
135void
136pkcs11_sessionlist_delete(pkcs11_slot_t *slotp)
137{
138
139	pkcs11_session_t *sessp, *sess_nextp;
140
141	sessp = slotp->sl_sess_list;
142
143	/* Delete all the sessions in this slot's session list */
144	while (sessp) {
145		sess_nextp = sessp->se_next;
146
147		pkcs11_session_delete(slotp, sessp);
148
149		sessp = sess_nextp;
150	}
151
152	slotp->sl_sess_list = NULL;
153
154}
155