/*
- * Copyright (c) 1997 - 2005 Kungliga Tekniska Högskolan
- * (Royal Institute of Technology, Stockholm, Sweden).
- * All rights reserved.
+ * Copyright (c) 1997 - 2007 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * All rights reserved.
*
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
*
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
*
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
*
- * 3. Neither the name of the Institute nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
*
- * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
*/
#include <krb5_locl.h>
-RCSID("$Id: rd_cred.c,v 1.23 2005/06/17 04:31:48 lha Exp $");
-
static krb5_error_code
compare_addrs(krb5_context context,
krb5_address *a,
krb5_print_address (a, a_str, sizeof(a_str), &len);
krb5_print_address (b, b_str, sizeof(b_str), &len);
- krb5_set_error_string(context, "%s: %s != %s", message, b_str, a_str);
+ krb5_set_error_message(context, KRB5KRB_AP_ERR_BADADDR,
+ "%s: %s != %s", message, b_str, a_str);
return KRB5KRB_AP_ERR_BADADDR;
}
krb5_crypto crypto;
int i;
- if ((auth_context->flags &
+ memset(&enc_krb_cred_part, 0, sizeof(enc_krb_cred_part));
+
+ if ((auth_context->flags &
(KRB5_AUTH_CONTEXT_RET_TIME | KRB5_AUTH_CONTEXT_RET_SEQUENCE)) &&
outdata == NULL)
return KRB5_RC_REQUIRED; /* XXX better error, MIT returns this */
*ret_creds = NULL;
- ret = decode_KRB_CRED(in_data->data, in_data->length,
+ ret = decode_KRB_CRED(in_data->data, in_data->length,
&cred, &len);
- if(ret)
+ if(ret) {
+ krb5_clear_error_message(context);
return ret;
+ }
if (cred.pvno != 5) {
ret = KRB5KRB_AP_ERR_BADVERSION;
- krb5_clear_error_string (context);
+ krb5_clear_error_message (context);
goto out;
}
if (cred.msg_type != krb_cred) {
ret = KRB5KRB_AP_ERR_MSG_TYPE;
- krb5_clear_error_string (context);
+ krb5_clear_error_message (context);
goto out;
}
- if (cred.enc_part.etype == ETYPE_NULL) {
+ if (cred.enc_part.etype == ETYPE_NULL) {
/* DK: MIT GSS-API Compatibility */
enc_krb_cred_part_data.length = cred.enc_part.cipher.length;
enc_krb_cred_part_data.data = cred.enc_part.cipher.data;
} else {
- if (auth_context->remote_subkey)
+ /* Try both subkey and session key.
+ *
+ * RFC4120 claims we should use the session key, but Heimdal
+ * before 0.8 used the remote subkey if it was send in the
+ * auth_context.
+ */
+
+ if (auth_context->remote_subkey) {
ret = krb5_crypto_init(context, auth_context->remote_subkey,
0, &crypto);
- else
+ if (ret)
+ goto out;
+
+ ret = krb5_decrypt_EncryptedData(context,
+ crypto,
+ KRB5_KU_KRB_CRED,
+ &cred.enc_part,
+ &enc_krb_cred_part_data);
+
+ krb5_crypto_destroy(context, crypto);
+ }
+
+ /*
+ * If there was not subkey, or we failed using subkey,
+ * retry using the session key
+ */
+ if (auth_context->remote_subkey == NULL || ret == KRB5KRB_AP_ERR_BAD_INTEGRITY)
+ {
+
ret = krb5_crypto_init(context, auth_context->keyblock,
0, &crypto);
- /* DK: MIT rsh */
- if (ret)
- goto out;
-
- ret = krb5_decrypt_EncryptedData(context,
- crypto,
- KRB5_KU_KRB_CRED,
- &cred.enc_part,
- &enc_krb_cred_part_data);
-
- krb5_crypto_destroy(context, crypto);
+ if (ret)
+ goto out;
+
+ ret = krb5_decrypt_EncryptedData(context,
+ crypto,
+ KRB5_KU_KRB_CRED,
+ &cred.enc_part,
+ &enc_krb_cred_part_data);
+
+ krb5_crypto_destroy(context, crypto);
+ }
if (ret)
goto out;
}
- ret = krb5_decode_EncKrbCredPart (context,
- enc_krb_cred_part_data.data,
- enc_krb_cred_part_data.length,
- &enc_krb_cred_part,
- &len);
- if (ret)
+ ret = decode_EncKrbCredPart(enc_krb_cred_part_data.data,
+ enc_krb_cred_part_data.length,
+ &enc_krb_cred_part,
+ &len);
+ if (enc_krb_cred_part_data.data != cred.enc_part.cipher.data)
+ krb5_data_free(&enc_krb_cred_part_data);
+ if (ret) {
+ krb5_set_error_message(context, ret,
+ N_("Failed to decode "
+ "encrypte credential part", ""));
goto out;
+ }
/* check sender address */
goto out;
- ret = compare_addrs(context, a, enc_krb_cred_part.s_address,
- "sender address is wrong in received creds");
+ ret = compare_addrs(context, a, enc_krb_cred_part.s_address,
+ N_("sender address is wrong "
+ "in received creds", ""));
krb5_free_address(context, a);
free(a);
if(ret)
auth_context->local_port);
if (ret)
goto out;
-
- ret = compare_addrs(context, a, enc_krb_cred_part.r_address,
- "receiver address is wrong in received creds");
+
+ ret = compare_addrs(context, a, enc_krb_cred_part.r_address,
+ N_("receiver address is wrong "
+ "in received creds", ""));
krb5_free_address(context, a);
free(a);
if(ret)
} else {
ret = compare_addrs(context, auth_context->local_address,
enc_krb_cred_part.r_address,
- "receiver address is wrong in received creds");
+ N_("receiver address is wrong "
+ "in received creds", ""));
if(ret)
goto out;
}
enc_krb_cred_part.usec == NULL ||
abs(*enc_krb_cred_part.timestamp - sec)
> context->max_skew) {
- krb5_clear_error_string (context);
+ krb5_clear_error_message (context);
ret = KRB5KRB_AP_ERR_SKEW;
goto out;
}
}
- if ((auth_context->flags &
+ if ((auth_context->flags &
(KRB5_AUTH_CONTEXT_RET_TIME | KRB5_AUTH_CONTEXT_RET_SEQUENCE))) {
/* if these fields are not present in the cred-part, silently
return zero */
if(enc_krb_cred_part.nonce)
outdata->seq = *enc_krb_cred_part.nonce;
}
-
+
/* Convert to NULL terminated list of creds */
- *ret_creds = calloc(enc_krb_cred_part.ticket_info.len + 1,
+ *ret_creds = calloc(enc_krb_cred_part.ticket_info.len + 1,
sizeof(**ret_creds));
if (*ret_creds == NULL) {
ret = ENOMEM;
- krb5_set_error_string (context, "malloc: out of memory");
+ krb5_set_error_message(context, ret,
+ N_("malloc: out of memory", ""));
goto out;
}
creds = calloc(1, sizeof(*creds));
if(creds == NULL) {
ret = ENOMEM;
- krb5_set_error_string (context, "malloc: out of memory");
+ krb5_set_error_message(context, ret,
+ N_("malloc: out of memory", ""));
goto out;
}
- ASN1_MALLOC_ENCODE(Ticket, creds->ticket.data, creds->ticket.length,
+ ASN1_MALLOC_ENCODE(Ticket, creds->ticket.data, creds->ticket.length,
&cred.tickets.val[i], &len, ret);
- if (ret)
+ if (ret) {
+ free(creds);
goto out;
+ }
if(creds->ticket.length != len)
krb5_abortx(context, "internal error in ASN.1 encoder");
copy_EncryptionKey (&kci->key, &creds->session);
if (kci->prealm && kci->pname)
- _krb5_principalname2krb5_principal (&creds->client,
+ _krb5_principalname2krb5_principal (context,
+ &creds->client,
*kci->pname,
*kci->prealm);
if (kci->flags)
if (kci->renew_till)
creds->times.renew_till = *kci->renew_till;
if (kci->srealm && kci->sname)
- _krb5_principalname2krb5_principal (&creds->server,
+ _krb5_principalname2krb5_principal (context,
+ &creds->server,
*kci->sname,
*kci->srealm);
if (kci->caddr)
}
(*ret_creds)[i] = NULL;
+
+ free_KRB_CRED (&cred);
+ free_EncKrbCredPart(&enc_krb_cred_part);
+
return 0;
out:
+ free_EncKrbCredPart(&enc_krb_cred_part);
free_KRB_CRED (&cred);
if(*ret_creds) {
for(i = 0; (*ret_creds)[i]; i++)
krb5_free_creds(context, (*ret_creds)[i]);
free(*ret_creds);
+ *ret_creds = NULL;
}
return ret;
}
git.samba.org / amitay / samba.git / blobdiff