2 * Copyright (c) 1997-2001 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the Institute nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 #include "krb5_locl.h"
39 struct krb5_rcache_data {
43 krb5_error_code KRB5_LIB_FUNCTION
44 krb5_rc_resolve(krb5_context context,
48 id->name = strdup(name);
49 if(id->name == NULL) {
50 krb5_set_error_message(context, KRB5_RC_MALLOC,
51 N_("malloc: out of memory", ""));
52 return KRB5_RC_MALLOC;
57 krb5_error_code KRB5_LIB_FUNCTION
58 krb5_rc_resolve_type(krb5_context context,
63 if(strcmp(type, "FILE")) {
64 krb5_set_error_message (context, KRB5_RC_TYPE_NOTFOUND,
65 N_("replay cache type %s not supported", ""),
67 return KRB5_RC_TYPE_NOTFOUND;
69 *id = calloc(1, sizeof(**id));
71 krb5_set_error_message(context, KRB5_RC_MALLOC,
72 N_("malloc: out of memory", ""));
73 return KRB5_RC_MALLOC;
78 krb5_error_code KRB5_LIB_FUNCTION
79 krb5_rc_resolve_full(krb5_context context,
81 const char *string_name)
87 if(strncmp(string_name, "FILE:", 5)) {
88 krb5_set_error_message(context, KRB5_RC_TYPE_NOTFOUND,
89 N_("replay cache type %s not supported", ""),
91 return KRB5_RC_TYPE_NOTFOUND;
93 ret = krb5_rc_resolve_type(context, id, "FILE");
96 ret = krb5_rc_resolve(context, *id, string_name + 5);
98 krb5_rc_close(context, *id);
104 const char* KRB5_LIB_FUNCTION
105 krb5_rc_default_name(krb5_context context)
107 return "FILE:/var/run/default_rcache";
110 const char* KRB5_LIB_FUNCTION
111 krb5_rc_default_type(krb5_context context)
116 krb5_error_code KRB5_LIB_FUNCTION
117 krb5_rc_default(krb5_context context,
120 return krb5_rc_resolve_full(context, id, krb5_rc_default_name(context));
125 unsigned char data[16];
128 krb5_error_code KRB5_LIB_FUNCTION
129 krb5_rc_initialize(krb5_context context,
131 krb5_deltat auth_lifespan)
133 FILE *f = fopen(id->name, "w");
139 krb5_set_error_message(context, ret, "open(%s): %s", id->name,
143 tmp.stamp = auth_lifespan;
144 fwrite(&tmp, 1, sizeof(tmp), f);
149 krb5_error_code KRB5_LIB_FUNCTION
150 krb5_rc_recover(krb5_context context,
156 krb5_error_code KRB5_LIB_FUNCTION
157 krb5_rc_destroy(krb5_context context,
162 if(remove(id->name) < 0) {
164 krb5_set_error_message(context, ret, "remove(%s): %s", id->name,
168 return krb5_rc_close(context, id);
171 krb5_error_code KRB5_LIB_FUNCTION
172 krb5_rc_close(krb5_context context,
181 checksum_authenticator(Authenticator *auth, void *data)
187 MD5_Update (&md5, auth->crealm, strlen(auth->crealm));
188 for(i = 0; i < auth->cname.name_string.len; i++)
189 MD5_Update(&md5, auth->cname.name_string.val[i],
190 strlen(auth->cname.name_string.val[i]));
191 MD5_Update (&md5, &auth->ctime, sizeof(auth->ctime));
192 MD5_Update (&md5, &auth->cusec, sizeof(auth->cusec));
193 MD5_Final (data, &md5);
196 krb5_error_code KRB5_LIB_FUNCTION
197 krb5_rc_store(krb5_context context,
199 krb5_donot_replay *rep)
201 struct rc_entry ent, tmp;
206 ent.stamp = time(NULL);
207 checksum_authenticator(rep, ent.data);
208 f = fopen(id->name, "r");
211 krb5_set_error_message(context, ret, "open(%s): %s", id->name,
216 fread(&tmp, sizeof(ent), 1, f);
217 t = ent.stamp - tmp.stamp;
218 while(fread(&tmp, sizeof(ent), 1, f)){
221 if(memcmp(tmp.data, ent.data, sizeof(ent.data)) == 0){
223 krb5_clear_error_message (context);
224 return KRB5_RC_REPLAY;
230 krb5_set_error_message(context, ret, "%s: %s",
231 id->name, strerror(ret));
235 f = fopen(id->name, "a");
237 krb5_set_error_message(context, KRB5_RC_IO_UNKNOWN,
238 "open(%s): %s", id->name,
240 return KRB5_RC_IO_UNKNOWN;
242 fwrite(&ent, 1, sizeof(ent), f);
247 krb5_error_code KRB5_LIB_FUNCTION
248 krb5_rc_expunge(krb5_context context,
254 krb5_error_code KRB5_LIB_FUNCTION
255 krb5_rc_get_lifespan(krb5_context context,
257 krb5_deltat *auth_lifespan)
259 FILE *f = fopen(id->name, "r");
262 r = fread(&ent, sizeof(ent), 1, f);
265 *auth_lifespan = ent.stamp;
268 krb5_clear_error_message (context);
269 return KRB5_RC_IO_UNKNOWN;
272 const char* KRB5_LIB_FUNCTION
273 krb5_rc_get_name(krb5_context context,
279 const char* KRB5_LIB_FUNCTION
280 krb5_rc_get_type(krb5_context context,
286 krb5_error_code KRB5_LIB_FUNCTION
287 krb5_get_server_rcache(krb5_context context,
288 const krb5_data *piece,
294 char *tmp = malloc(4 * piece->length + 1);
298 krb5_set_error_message(context, ENOMEM,
299 N_("malloc: out of memory", ""));
302 strvisx(tmp, piece->data, piece->length, VIS_WHITE | VIS_OCTAL);
304 asprintf(&name, "FILE:rc_%s_%u", tmp, (unsigned)geteuid());
306 asprintf(&name, "FILE:rc_%s", tmp);
310 krb5_set_error_message(context, ENOMEM,
311 N_("malloc: out of memory", ""));
315 ret = krb5_rc_resolve_full(context, &rcache, name);