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/*
* Copyright (c) 1997-2005 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:
*
* 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.
*
* 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.
*/
#include "kdc_locl.h"
RCSID("$Id: process.c 23316 2008-06-23 04:32:32Z lha $");
/*
*
*/
void
krb5_kdc_update_time(struct timeval *tv)
{
if (tv == NULL)
gettimeofday(&_kdc_now, NULL);
else
_kdc_now = *tv;
}
/*
* handle the request in `buf, len', from `addr' (or `from' as a string),
* sending a reply in `reply'.
*/
int
krb5_kdc_process_request(krb5_context context,
krb5_kdc_configuration *config,
unsigned char *buf,
size_t len,
krb5_data *reply,
krb5_boolean *prependlength,
const char *from,
struct sockaddr *addr,
int datagram_reply)
{
KDC_REQ req;
Ticket ticket;
DigestREQ digestreq;
Kx509Request kx509req;
krb5_error_code ret;
size_t i;
if(decode_AS_REQ(buf, len, &req, &i) == 0){
krb5_data req_buffer;
req_buffer.data = buf;
req_buffer.length = len;
ret = _kdc_as_rep(context, config, &req, &req_buffer,
reply, from, addr, datagram_reply);
free_AS_REQ(&req);
return ret;
}else if(decode_TGS_REQ(buf, len, &req, &i) == 0){
ret = _kdc_tgs_rep(context, config, &req, reply, from, addr, datagram_reply);
free_TGS_REQ(&req);
return ret;
}else if(decode_Ticket(buf, len, &ticket, &i) == 0){
ret = _kdc_do_524(context, config, &ticket, reply, from, addr);
free_Ticket(&ticket);
return ret;
}else if(decode_DigestREQ(buf, len, &digestreq, &i) == 0){
ret = _kdc_do_digest(context, config, &digestreq, reply, from, addr);
free_DigestREQ(&digestreq);
return ret;
} else if (_kdc_try_kx509_request(buf, len, &kx509req, &i) == 0) {
ret = _kdc_do_kx509(context, config, &kx509req, reply, from, addr);
free_Kx509Request(&kx509req);
return ret;
} else if(_kdc_maybe_version4(buf, len)){
*prependlength = FALSE; /* elbitapmoc sdrawkcab XXX */
_kdc_do_version4(context, config, buf, len, reply, from,
(struct sockaddr_in*)addr);
return 0;
} else if (config->enable_kaserver) {
ret = _kdc_do_kaserver(context, config, buf, len, reply, from,
(struct sockaddr_in*)addr);
return ret;
}
return -1;
}
/*
* handle the request in `buf, len', from `addr' (or `from' as a string),
* sending a reply in `reply'.
*
* This only processes krb5 requests
*/
int
krb5_kdc_process_krb5_request(krb5_context context,
krb5_kdc_configuration *config,
unsigned char *buf,
size_t len,
krb5_data *reply,
const char *from,
struct sockaddr *addr,
int datagram_reply)
{
KDC_REQ req;
krb5_error_code ret;
size_t i;
if(decode_AS_REQ(buf, len, &req, &i) == 0){
krb5_data req_buffer;
req_buffer.data = buf;
req_buffer.length = len;
ret = _kdc_as_rep(context, config, &req, &req_buffer,
reply, from, addr, datagram_reply);
free_AS_REQ(&req);
return ret;
}else if(decode_TGS_REQ(buf, len, &req, &i) == 0){
ret = _kdc_tgs_rep(context, config, &req, reply, from, addr, datagram_reply);
free_TGS_REQ(&req);
return ret;
}
return -1;
}
/*
*
*/
int
krb5_kdc_save_request(krb5_context context,
const char *fn,
const unsigned char *buf,
size_t len,
const krb5_data *reply,
const struct sockaddr *sa)
{
krb5_storage *sp;
krb5_address a;
int fd, ret;
uint32_t t;
krb5_data d;
memset(&a, 0, sizeof(a));
d.data = rk_UNCONST(buf);
d.length = len;
t = _kdc_now.tv_sec;
fd = open(fn, O_WRONLY|O_CREAT|O_APPEND, 0600);
if (fd < 0) {
int saved_errno = errno;
krb5_set_error_message(context, saved_errno, "Failed to open: %s", fn);
return saved_errno;
}
sp = krb5_storage_from_fd(fd);
close(fd);
if (sp == NULL) {
krb5_set_error_message(context, ENOMEM, "Storage failed to open fd");
return ENOMEM;
}
ret = krb5_sockaddr2address(context, sa, &a);
if (ret)
goto out;
krb5_store_uint32(sp, 1);
krb5_store_uint32(sp, t);
krb5_store_address(sp, a);
krb5_store_data(sp, d);
{
Der_class cl;
Der_type ty;
unsigned int tag;
ret = der_get_tag (reply->data, reply->length,
&cl, &ty, &tag, NULL);
if (ret) {
krb5_store_uint32(sp, 0xffffffff);
krb5_store_uint32(sp, 0xffffffff);
} else {
krb5_store_uint32(sp, MAKE_TAG(cl, ty, 0));
krb5_store_uint32(sp, tag);
}
}
krb5_free_address(context, &a);
out:
krb5_storage_free(sp);
return 0;
}
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