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
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of PADL Software nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY PADL SOFTWARE AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL PADL SOFTWARE OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 RCSID("$Id: client.c 20487 2007-04-21 06:25:06Z lha $");
39 kcm_ccache_resolve_client(krb5_context context,
47 ret = kcm_ccache_resolve(context, name, ccache);
49 kcm_log(1, "Failed to resolve cache %s: %s",
50 name, krb5_get_err_text(context, ret));
54 ret = kcm_access(context, client, opcode, *ccache);
56 ret = KRB5_FCC_NOFILE; /* don't disclose */
57 kcm_release_ccache(context, ccache);
64 kcm_ccache_destroy_client(krb5_context context,
71 ret = kcm_ccache_resolve(context, name, &ccache);
73 kcm_log(1, "Failed to resolve cache %s: %s",
74 name, krb5_get_err_text(context, ret));
78 ret = kcm_access(context, client, KCM_OP_DESTROY, ccache);
80 kcm_release_ccache(context, &ccache);
84 ret = kcm_ccache_destroy(context, ccache->name);
86 /* don't leave any events dangling */
87 kcm_cleanup_events(context, ccache);
90 kcm_release_ccache(context, &ccache);
95 kcm_ccache_new_client(krb5_context context,
103 /* We insist the ccache name starts with UID or UID: */
104 if (name_constraints != 0) {
109 snprintf(prefix, sizeof(prefix), "%ld:", (long)client->uid);
110 prefix_len = strlen(prefix);
112 if (strncmp(name, prefix, prefix_len) == 0)
115 prefix[prefix_len - 1] = '\0';
116 if (strcmp(name, prefix) == 0)
120 /* Allow root to create badly-named ccaches */
121 if (bad && !CLIENT_IS_ROOT(client))
122 return KRB5_CC_BADNAME;
125 ret = kcm_ccache_resolve(context, name, &ccache);
127 if ((ccache->uid != client->uid ||
128 ccache->gid != client->gid) && !CLIENT_IS_ROOT(client))
129 return KRB5_FCC_PERM;
130 } else if (ret != KRB5_FCC_NOFILE && !(CLIENT_IS_ROOT(client) && ret == KRB5_FCC_PERM)) {
134 if (ret == KRB5_FCC_NOFILE) {
135 ret = kcm_ccache_new(context, name, &ccache);
137 kcm_log(1, "Failed to initialize cache %s: %s",
138 name, krb5_get_err_text(context, ret));
142 /* bind to current client */
143 ccache->uid = client->uid;
144 ccache->gid = client->gid;
146 ret = kcm_zero_ccache_data(context, ccache);
148 kcm_log(1, "Failed to empty cache %s: %s",
149 name, krb5_get_err_text(context, ret));
150 kcm_release_ccache(context, &ccache);
153 kcm_cleanup_events(context, ccache);
156 ret = kcm_access(context, client, KCM_OP_INITIALIZE, ccache);
158 kcm_release_ccache(context, &ccache);
159 kcm_ccache_destroy(context, name);
164 * Finally, if the user is root and the cache was created under
165 * another user's name, chown the cache to that user and their
168 if (CLIENT_IS_ROOT(client)) {
170 int matches = sscanf(name,"%ld:",&uid);
172 matches = sscanf(name,"%ld",&uid);
174 struct passwd *pwd = getpwuid(uid);
176 gid_t gid = pwd->pw_gid;
177 kcm_chown(context, client, ccache, uid, gid);