2 * Copyright (c) 2005, PADL Software Pty Ltd.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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10 * notice, this list of conditions and the following disclaimer.
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14 * documentation and/or other materials provided with the distribution.
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17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
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22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL PADL SOFTWARE OR CONTRIBUTORS BE LIABLE
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25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 kcm_access(krb5_context context,
48 KCM_ASSERT_VALID(ccache);
51 case KCM_OP_INITIALIZE:
54 case KCM_OP_REMOVE_CRED:
55 case KCM_OP_SET_FLAGS:
58 case KCM_OP_GET_INITIAL_TICKET:
59 case KCM_OP_GET_TICKET:
60 case KCM_OP_MOVE_CACHE:
69 case KCM_OP_GET_PRINCIPAL:
70 case KCM_OP_GET_FIRST:
79 if (ccache->flags & KCM_FLAGS_OWNER_IS_SYSTEM) {
80 /* System caches cannot be reinitialized or destroyed by users */
81 if (opcode == KCM_OP_INITIALIZE ||
82 opcode == KCM_OP_DESTROY ||
83 opcode == KCM_OP_REMOVE_CRED ||
84 opcode == KCM_OP_MOVE_CACHE) {
89 /* Let root always read system caches */
90 if (client->uid == 0) {
98 /* Root may do whatever they like */
99 if (client->uid == ccache->uid || CLIENT_IS_ROOT(client)) {
104 } else if (client->gid == ccache->gid || CLIENT_IS_ROOT(client)) {
116 ret = ((ccache->mode & mask) == mask) ? 0 : KRB5_FCC_PERM;
120 kcm_log(2, "Process %d is not permitted to call %s on cache %s",
121 client->pid, kcm_op2string(opcode), ccache->name);
128 kcm_chmod(krb5_context context,
133 KCM_ASSERT_VALID(ccache);
135 /* System cache mode can only be set at startup */
136 if (ccache->flags & KCM_FLAGS_OWNER_IS_SYSTEM)
137 return KRB5_FCC_PERM;
139 if (ccache->uid != client->uid)
140 return KRB5_FCC_PERM;
142 if (ccache->gid != client->gid)
143 return KRB5_FCC_PERM;
145 HEIMDAL_MUTEX_lock(&ccache->mutex);
149 HEIMDAL_MUTEX_unlock(&ccache->mutex);
155 kcm_chown(krb5_context context,
161 KCM_ASSERT_VALID(ccache);
163 /* System cache owner can only be set at startup */
164 if (ccache->flags & KCM_FLAGS_OWNER_IS_SYSTEM)
165 return KRB5_FCC_PERM;
167 if (ccache->uid != client->uid)
168 return KRB5_FCC_PERM;
170 if (ccache->gid != client->gid)
171 return KRB5_FCC_PERM;
173 HEIMDAL_MUTEX_lock(&ccache->mutex);
178 HEIMDAL_MUTEX_unlock(&ccache->mutex);