2 * Copyright (c) 1997-2001 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
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7 * modification, are permitted provided that the following conditions
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11 * notice, this list of conditions and the following disclaimer.
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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
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34 #include "krb5_locl.h"
37 RCSID("$Id: replay.c,v 1.9 2001/07/03 19:33:13 assar Exp $");
39 struct krb5_rcache_data {
44 krb5_rc_resolve(krb5_context context,
48 id->name = strdup(name);
49 if(id->name == NULL) {
50 krb5_set_error_string (context, "malloc: out of memory");
51 return KRB5_RC_MALLOC;
57 krb5_rc_resolve_type(krb5_context context,
61 if(strcmp(type, "FILE")) {
62 krb5_set_error_string (context, "replay cache type %s not supported",
64 return KRB5_RC_TYPE_NOTFOUND;
66 *id = calloc(1, sizeof(**id));
68 krb5_set_error_string (context, "malloc: out of memory");
69 return KRB5_RC_MALLOC;
75 krb5_rc_resolve_full(krb5_context context,
77 const char *string_name)
80 if(strncmp(string_name, "FILE:", 5)) {
81 krb5_set_error_string (context, "replay cache type %s not supported",
83 return KRB5_RC_TYPE_NOTFOUND;
85 ret = krb5_rc_resolve_type(context, id, "FILE");
88 ret = krb5_rc_resolve(context, *id, string_name + 5);
93 krb5_rc_default_name(krb5_context context)
95 return "FILE:/var/run/default_rcache";
99 krb5_rc_default_type(krb5_context context)
105 krb5_rc_default(krb5_context context,
108 return krb5_rc_resolve_full(context, id, krb5_rc_default_name(context));
113 unsigned char data[16];
117 krb5_rc_initialize(krb5_context context,
119 krb5_deltat auth_lifespan)
121 FILE *f = fopen(id->name, "w");
127 krb5_set_error_string (context, "open(%s): %s", id->name,
131 tmp.stamp = auth_lifespan;
132 fwrite(&tmp, 1, sizeof(tmp), f);
138 krb5_rc_recover(krb5_context context,
145 krb5_rc_destroy(krb5_context context,
150 if(remove(id->name) < 0) {
152 krb5_set_error_string (context, "remove(%s): %s", id->name,
156 return krb5_rc_close(context, id);
160 krb5_rc_close(krb5_context context,
169 checksum_authenticator(Authenticator *auth, void *data)
175 MD5_Update (&md5, auth->crealm, strlen(auth->crealm));
176 for(i = 0; i < auth->cname.name_string.len; i++)
177 MD5_Update(&md5, auth->cname.name_string.val[i],
178 strlen(auth->cname.name_string.val[i]));
179 MD5_Update (&md5, &auth->ctime, sizeof(auth->ctime));
180 MD5_Update (&md5, &auth->cusec, sizeof(auth->cusec));
181 MD5_Final (data, &md5);
185 krb5_rc_store(krb5_context context,
187 krb5_donot_replay *rep)
189 struct rc_entry ent, tmp;
194 ent.stamp = time(NULL);
195 checksum_authenticator(rep, ent.data);
196 f = fopen(id->name, "r");
199 krb5_set_error_string (context, "open(%s): %s", id->name,
203 fread(&tmp, sizeof(ent), 1, f);
204 t = ent.stamp - tmp.stamp;
205 while(fread(&tmp, sizeof(ent), 1, f)){
208 if(memcmp(tmp.data, ent.data, sizeof(ent.data)) == 0){
210 krb5_clear_error_string (context);
211 return KRB5_RC_REPLAY;
217 krb5_set_error_string (context, "%s: %s", id->name, strerror(ret));
221 f = fopen(id->name, "a");
223 krb5_set_error_string (context, "open(%s): %s", id->name,
225 return KRB5_RC_IO_UNKNOWN;
227 fwrite(&ent, 1, sizeof(ent), f);
233 krb5_rc_expunge(krb5_context context,
240 krb5_rc_get_lifespan(krb5_context context,
242 krb5_deltat *auth_lifespan)
244 FILE *f = fopen(id->name, "r");
247 r = fread(&ent, sizeof(ent), 1, f);
250 *auth_lifespan = ent.stamp;
253 krb5_clear_error_string (context);
254 return KRB5_RC_IO_UNKNOWN;
258 krb5_rc_get_name(krb5_context context,
265 krb5_rc_get_type(krb5_context context,
272 krb5_get_server_rcache(krb5_context context,
273 const krb5_data *piece,
279 char *tmp = malloc(4 * piece->length + 1);
283 krb5_set_error_string (context, "malloc: out of memory");
286 strvisx(tmp, piece->data, piece->length, VIS_WHITE | VIS_OCTAL);
288 asprintf(&name, "FILE:rc_%s_%u", tmp, (unsigned)geteuid());
290 asprintf(&name, "FILE:rc_%s", tmp);
294 krb5_set_error_string (context, "malloc: out of memory");
298 ret = krb5_rc_resolve_full(context, &rcache, name);