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heimdal/lib/krb5/store.c
Love Hörnquist Åstrand 2d2f459f74 Add krb5_{ret,store}_stringnl functions, stores/retrieves a \n 
terminated string.


git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@17883 ec53bebd-3082-4978-b11e-865c3cabbd6b
2006-08-18 08:39:13 +00:00

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/*
* Copyright (c) 1997-2006 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 "krb5_locl.h"
#include "store-int.h"
RCSID("$Id$");
#define BYTEORDER_IS(SP, V) (((SP)->flags & KRB5_STORAGE_BYTEORDER_MASK) == (V))
#define BYTEORDER_IS_LE(SP) BYTEORDER_IS((SP), KRB5_STORAGE_BYTEORDER_LE)
#define BYTEORDER_IS_BE(SP) BYTEORDER_IS((SP), KRB5_STORAGE_BYTEORDER_BE)
#define BYTEORDER_IS_HOST(SP) (BYTEORDER_IS((SP), KRB5_STORAGE_BYTEORDER_HOST) || \
krb5_storage_is_flags((SP), KRB5_STORAGE_HOST_BYTEORDER))
void KRB5_LIB_FUNCTION
krb5_storage_set_flags(krb5_storage *sp, krb5_flags flags)
{
sp->flags |= flags;
}
void KRB5_LIB_FUNCTION
krb5_storage_clear_flags(krb5_storage *sp, krb5_flags flags)
{
sp->flags &= ~flags;
}
krb5_boolean KRB5_LIB_FUNCTION
krb5_storage_is_flags(krb5_storage *sp, krb5_flags flags)
{
return (sp->flags & flags) == flags;
}
void KRB5_LIB_FUNCTION
krb5_storage_set_byteorder(krb5_storage *sp, krb5_flags byteorder)
{
sp->flags &= ~KRB5_STORAGE_BYTEORDER_MASK;
sp->flags |= byteorder;
}
krb5_flags KRB5_LIB_FUNCTION
krb5_storage_get_byteorder(krb5_storage *sp, krb5_flags byteorder)
{
return sp->flags & KRB5_STORAGE_BYTEORDER_MASK;
}
off_t KRB5_LIB_FUNCTION
krb5_storage_seek(krb5_storage *sp, off_t offset, int whence)
{
return (*sp->seek)(sp, offset, whence);
}
krb5_ssize_t KRB5_LIB_FUNCTION
krb5_storage_read(krb5_storage *sp, void *buf, size_t len)
{
return sp->fetch(sp, buf, len);
}
krb5_ssize_t KRB5_LIB_FUNCTION
krb5_storage_write(krb5_storage *sp, const void *buf, size_t len)
{
return sp->store(sp, buf, len);
}
void KRB5_LIB_FUNCTION
krb5_storage_set_eof_code(krb5_storage *sp, int code)
{
sp->eof_code = code;
}
krb5_ssize_t KRB5_LIB_FUNCTION
_krb5_put_int(void *buffer, unsigned long value, size_t size)
{
unsigned char *p = buffer;
int i;
for (i = size - 1; i >= 0; i--) {
p[i] = value & 0xff;
value >>= 8;
}
return size;
}
krb5_ssize_t KRB5_LIB_FUNCTION
_krb5_get_int(void *buffer, unsigned long *value, size_t size)
{
unsigned char *p = buffer;
unsigned long v = 0;
int i;
for (i = 0; i < size; i++)
v = (v << 8) + p[i];
*value = v;
return size;
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_storage_free(krb5_storage *sp)
{
if(sp->free)
(*sp->free)(sp);
free(sp->data);
free(sp);
return 0;
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_storage_to_data(krb5_storage *sp, krb5_data *data)
{
off_t pos;
size_t size;
krb5_error_code ret;
pos = sp->seek(sp, 0, SEEK_CUR);
size = (size_t)sp->seek(sp, 0, SEEK_END);
ret = krb5_data_alloc (data, size);
if (ret) {
sp->seek(sp, pos, SEEK_SET);
return ret;
}
if (size) {
sp->seek(sp, 0, SEEK_SET);
sp->fetch(sp, data->data, data->length);
sp->seek(sp, pos, SEEK_SET);
}
return 0;
}
static krb5_error_code
krb5_store_int(krb5_storage *sp,
int32_t value,
size_t len)
{
int ret;
unsigned char v[16];
if(len > sizeof(v))
return EINVAL;
_krb5_put_int(v, value, len);
ret = sp->store(sp, v, len);
if (ret != len)
return (ret<0)?errno:sp->eof_code;
return 0;
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_store_int32(krb5_storage *sp,
int32_t value)
{
if(BYTEORDER_IS_HOST(sp))
value = htonl(value);
else if(BYTEORDER_IS_LE(sp))
value = bswap32(value);
return krb5_store_int(sp, value, 4);
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_store_uint32(krb5_storage *sp,
uint32_t value)
{
return krb5_store_int32(sp, (int32_t)value);
}
static krb5_error_code
krb5_ret_int(krb5_storage *sp,
int32_t *value,
size_t len)
{
int ret;
unsigned char v[4];
unsigned long w;
ret = sp->fetch(sp, v, len);
if(ret != len)
return (ret<0)?errno:sp->eof_code;
_krb5_get_int(v, &w, len);
*value = w;
return 0;
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_ret_int32(krb5_storage *sp,
int32_t *value)
{
krb5_error_code ret = krb5_ret_int(sp, value, 4);
if(ret)
return ret;
if(BYTEORDER_IS_HOST(sp))
*value = htonl(*value);
else if(BYTEORDER_IS_LE(sp))
*value = bswap32(*value);
return 0;
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_ret_uint32(krb5_storage *sp,
uint32_t *value)
{
krb5_error_code ret;
int32_t v;
ret = krb5_ret_int32(sp, &v);
if (ret == 0)
*value = (uint32_t)v;
return ret;
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_store_int16(krb5_storage *sp,
int16_t value)
{
if(BYTEORDER_IS_HOST(sp))
value = htons(value);
else if(BYTEORDER_IS_LE(sp))
value = bswap16(value);
return krb5_store_int(sp, value, 2);
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_store_uint16(krb5_storage *sp,
uint16_t value)
{
return krb5_store_int16(sp, (int16_t)value);
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_ret_int16(krb5_storage *sp,
int16_t *value)
{
int32_t v;
int ret;
ret = krb5_ret_int(sp, &v, 2);
if(ret)
return ret;
*value = v;
if(BYTEORDER_IS_HOST(sp))
*value = htons(*value);
else if(BYTEORDER_IS_LE(sp))
*value = bswap16(*value);
return 0;
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_ret_uint16(krb5_storage *sp,
uint16_t *value)
{
krb5_error_code ret;
int16_t v;
ret = krb5_ret_int16(sp, &v);
if (ret == 0)
*value = (uint16_t)v;
return ret;
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_store_int8(krb5_storage *sp,
int8_t value)
{
int ret;
ret = sp->store(sp, &value, sizeof(value));
if (ret != sizeof(value))
return (ret<0)?errno:sp->eof_code;
return 0;
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_store_uint8(krb5_storage *sp,
uint8_t value)
{
return krb5_store_int8(sp, (int8_t)value);
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_ret_int8(krb5_storage *sp,
int8_t *value)
{
int ret;
ret = sp->fetch(sp, value, sizeof(*value));
if (ret != sizeof(*value))
return (ret<0)?errno:sp->eof_code;
return 0;
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_ret_uint8(krb5_storage *sp,
uint8_t *value)
{
krb5_error_code ret;
int8_t v;
ret = krb5_ret_int8(sp, &v);
if (ret == 0)
*value = (uint8_t)v;
return ret;
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_store_data(krb5_storage *sp,
krb5_data data)
{
int ret;
ret = krb5_store_int32(sp, data.length);
if(ret < 0)
return ret;
ret = sp->store(sp, data.data, data.length);
if(ret != data.length){
if(ret < 0)
return errno;
return sp->eof_code;
}
return 0;
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_ret_data(krb5_storage *sp,
krb5_data *data)
{
int ret;
int32_t size;
ret = krb5_ret_int32(sp, &size);
if(ret)
return ret;
ret = krb5_data_alloc (data, size);
if (ret)
return ret;
if (size) {
ret = sp->fetch(sp, data->data, size);
if(ret != size)
return (ret < 0)? errno : sp->eof_code;
}
return 0;
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_store_string(krb5_storage *sp, const char *s)
{
krb5_data data;
data.length = strlen(s);
data.data = rk_UNCONST(s);
return krb5_store_data(sp, data);
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_ret_string(krb5_storage *sp,
char **string)
{
int ret;
krb5_data data;
ret = krb5_ret_data(sp, &data);
if(ret)
return ret;
*string = realloc(data.data, data.length + 1);
if(*string == NULL){
free(data.data);
return ENOMEM;
}
(*string)[data.length] = 0;
return 0;
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_store_stringz(krb5_storage *sp, const char *s)
{
size_t len = strlen(s) + 1;
ssize_t ret;
ret = sp->store(sp, s, len);
if(ret != len) {
if(ret < 0)
return ret;
else
return sp->eof_code;
}
return 0;
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_ret_stringz(krb5_storage *sp,
char **string)
{
char c;
char *s = NULL;
size_t len = 0;
ssize_t ret;
while((ret = sp->fetch(sp, &c, 1)) == 1){
char *tmp;
len++;
tmp = realloc (s, len);
if (tmp == NULL) {
free (s);
return ENOMEM;
}
s = tmp;
s[len - 1] = c;
if(c == 0)
break;
}
if(ret != 1){
free(s);
if(ret == 0)
return sp->eof_code;
return ret;
}
*string = s;
return 0;
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_store_stringnl(krb5_storage *sp, const char *s)
{
size_t len = strlen(s);
ssize_t ret;
ret = sp->store(sp, s, len);
if(ret != len) {
if(ret < 0)
return ret;
else
return sp->eof_code;
}
ret = sp->store(sp, "\n", 1);
if(ret != 1) {
if(ret < 0)
return ret;
else
return sp->eof_code;
}
return 0;
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_ret_stringnl(krb5_storage *sp,
char **string)
{
int expect_nl = 0;
char c;
char *s = NULL;
size_t len = 0;
ssize_t ret;
while((ret = sp->fetch(sp, &c, 1)) == 1){
char *tmp;
if (c == '\r') {
expect_nl = 1;
continue;
}
if (expect_nl && c != '\n') {
free(s);
return KRB5_BADMSGTYPE;
}
len++;
tmp = realloc (s, len);
if (tmp == NULL) {
free (s);
return ENOMEM;
}
s = tmp;
if(c == '\n') {
s[len - 1] = '\0';
break;
}
s[len - 1] = c;
}
if(ret != 1){
free(s);
if(ret == 0)
return sp->eof_code;
return ret;
}
*string = s;
return 0;
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_store_principal(krb5_storage *sp,
krb5_const_principal p)
{
int i;
int ret;
if(!krb5_storage_is_flags(sp, KRB5_STORAGE_PRINCIPAL_NO_NAME_TYPE)) {
ret = krb5_store_int32(sp, p->name.name_type);
if(ret) return ret;
}
if(krb5_storage_is_flags(sp, KRB5_STORAGE_PRINCIPAL_WRONG_NUM_COMPONENTS))
ret = krb5_store_int32(sp, p->name.name_string.len + 1);
else
ret = krb5_store_int32(sp, p->name.name_string.len);
if(ret) return ret;
ret = krb5_store_string(sp, p->realm);
if(ret) return ret;
for(i = 0; i < p->name.name_string.len; i++){
ret = krb5_store_string(sp, p->name.name_string.val[i]);
if(ret) return ret;
}
return 0;
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_ret_principal(krb5_storage *sp,
krb5_principal *princ)
{
int i;
int ret;
krb5_principal p;
int32_t type;
int32_t ncomp;
p = calloc(1, sizeof(*p));
if(p == NULL)
return ENOMEM;
if(krb5_storage_is_flags(sp, KRB5_STORAGE_PRINCIPAL_NO_NAME_TYPE))
type = KRB5_NT_UNKNOWN;
else if((ret = krb5_ret_int32(sp, &type))){
free(p);
return ret;
}
if((ret = krb5_ret_int32(sp, &ncomp))){
free(p);
return ret;
}
if(krb5_storage_is_flags(sp, KRB5_STORAGE_PRINCIPAL_WRONG_NUM_COMPONENTS))
ncomp--;
if (ncomp < 0) {
free(p);
return EINVAL;
}
p->name.name_type = type;
p->name.name_string.len = ncomp;
ret = krb5_ret_string(sp, &p->realm);
if(ret) {
free(p);
return ret;
}
p->name.name_string.val = calloc(ncomp, sizeof(*p->name.name_string.val));
if(p->name.name_string.val == NULL && ncomp != 0){
free(p->realm);
return ENOMEM;
}
for(i = 0; i < ncomp; i++){
ret = krb5_ret_string(sp, &p->name.name_string.val[i]);
if(ret) {
while (i >= 0)
free(p->name.name_string.val[i--]);
free(p->realm);
free(p);
return ret;
}
}
*princ = p;
return 0;
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_store_keyblock(krb5_storage *sp, krb5_keyblock p)
{
int ret;
ret = krb5_store_int16(sp, p.keytype);
if(ret) return ret;
if(krb5_storage_is_flags(sp, KRB5_STORAGE_KEYBLOCK_KEYTYPE_TWICE)){
/* this should really be enctype, but it is the same as
keytype nowadays */
ret = krb5_store_int16(sp, p.keytype);
if(ret) return ret;
}
ret = krb5_store_data(sp, p.keyvalue);
return ret;
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_ret_keyblock(krb5_storage *sp, krb5_keyblock *p)
{
int ret;
int16_t tmp;
ret = krb5_ret_int16(sp, &tmp);
if(ret) return ret;
p->keytype = tmp;
if(krb5_storage_is_flags(sp, KRB5_STORAGE_KEYBLOCK_KEYTYPE_TWICE)){
ret = krb5_ret_int16(sp, &tmp);
if(ret) return ret;
}
ret = krb5_ret_data(sp, &p->keyvalue);
return ret;
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_store_times(krb5_storage *sp, krb5_times times)
{
int ret;
ret = krb5_store_int32(sp, times.authtime);
if(ret) return ret;
ret = krb5_store_int32(sp, times.starttime);
if(ret) return ret;
ret = krb5_store_int32(sp, times.endtime);
if(ret) return ret;
ret = krb5_store_int32(sp, times.renew_till);
return ret;
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_ret_times(krb5_storage *sp, krb5_times *times)
{
int ret;
int32_t tmp;
ret = krb5_ret_int32(sp, &tmp);
times->authtime = tmp;
if(ret) return ret;
ret = krb5_ret_int32(sp, &tmp);
times->starttime = tmp;
if(ret) return ret;
ret = krb5_ret_int32(sp, &tmp);
times->endtime = tmp;
if(ret) return ret;
ret = krb5_ret_int32(sp, &tmp);
times->renew_till = tmp;
return ret;
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_store_address(krb5_storage *sp, krb5_address p)
{
int ret;
ret = krb5_store_int16(sp, p.addr_type);
if(ret) return ret;
ret = krb5_store_data(sp, p.address);
return ret;
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_ret_address(krb5_storage *sp, krb5_address *adr)
{
int16_t t;
int ret;
ret = krb5_ret_int16(sp, &t);
if(ret) return ret;
adr->addr_type = t;
ret = krb5_ret_data(sp, &adr->address);
return ret;
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_store_addrs(krb5_storage *sp, krb5_addresses p)
{
int i;
int ret;
ret = krb5_store_int32(sp, p.len);
if(ret) return ret;
for(i = 0; i<p.len; i++){
ret = krb5_store_address(sp, p.val[i]);
if(ret) break;
}
return ret;
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_ret_addrs(krb5_storage *sp, krb5_addresses *adr)
{
int i;
int ret;
int32_t tmp;
ret = krb5_ret_int32(sp, &tmp);
if(ret) return ret;
adr->len = tmp;
ALLOC(adr->val, adr->len);
if (adr->val == NULL && adr->len != 0)
return ENOMEM;
for(i = 0; i < adr->len; i++){
ret = krb5_ret_address(sp, &adr->val[i]);
if(ret) break;
}
return ret;
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_store_authdata(krb5_storage *sp, krb5_authdata auth)
{
krb5_error_code ret;
int i;
ret = krb5_store_int32(sp, auth.len);
if(ret) return ret;
for(i = 0; i < auth.len; i++){
ret = krb5_store_int16(sp, auth.val[i].ad_type);
if(ret) break;
ret = krb5_store_data(sp, auth.val[i].ad_data);
if(ret) break;
}
return 0;
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_ret_authdata(krb5_storage *sp, krb5_authdata *auth)
{
krb5_error_code ret;
int32_t tmp;
int16_t tmp2;
int i;
ret = krb5_ret_int32(sp, &tmp);
if(ret) return ret;
ALLOC_SEQ(auth, tmp);
if (auth->val == NULL && tmp != 0)
return ENOMEM;
for(i = 0; i < tmp; i++){
ret = krb5_ret_int16(sp, &tmp2);
if(ret) break;
auth->val[i].ad_type = tmp2;
ret = krb5_ret_data(sp, &auth->val[i].ad_data);
if(ret) break;
}
return ret;
}
static int32_t
bitswap32(int32_t b)
{
int32_t r = 0;
int i;
for (i = 0; i < 32; i++) {
r = r << 1 | (b & 1);
b = b >> 1;
}
return r;
}
/*
*
*/
krb5_error_code KRB5_LIB_FUNCTION
krb5_store_creds(krb5_storage *sp, krb5_creds *creds)
{
int ret;
ret = krb5_store_principal(sp, creds->client);
if(ret)
return ret;
ret = krb5_store_principal(sp, creds->server);
if(ret)
return ret;
ret = krb5_store_keyblock(sp, creds->session);
if(ret)
return ret;
ret = krb5_store_times(sp, creds->times);
if(ret)
return ret;
ret = krb5_store_int8(sp, creds->second_ticket.length != 0); /* is_skey */
if(ret)
return ret;
if(krb5_storage_is_flags(sp, KRB5_STORAGE_CREDS_FLAGS_WRONG_BITORDER))
ret = krb5_store_int32(sp, creds->flags.i);
else
ret = krb5_store_int32(sp, bitswap32(TicketFlags2int(creds->flags.b)));
if(ret)
return ret;
ret = krb5_store_addrs(sp, creds->addresses);
if(ret)
return ret;
ret = krb5_store_authdata(sp, creds->authdata);
if(ret)
return ret;
ret = krb5_store_data(sp, creds->ticket);
if(ret)
return ret;
ret = krb5_store_data(sp, creds->second_ticket);
return ret;
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_ret_creds(krb5_storage *sp, krb5_creds *creds)
{
krb5_error_code ret;
int8_t dummy8;
int32_t dummy32;
memset(creds, 0, sizeof(*creds));
ret = krb5_ret_principal (sp, &creds->client);
if(ret) goto cleanup;
ret = krb5_ret_principal (sp, &creds->server);
if(ret) goto cleanup;
ret = krb5_ret_keyblock (sp, &creds->session);
if(ret) goto cleanup;
ret = krb5_ret_times (sp, &creds->times);
if(ret) goto cleanup;
ret = krb5_ret_int8 (sp, &dummy8);
if(ret) goto cleanup;
ret = krb5_ret_int32 (sp, &dummy32);
if(ret) goto cleanup;
/*
* Runtime detect the what is the higher bits of the bitfield. If
* any of the higher bits are set in the input data, its either a
* new ticket flag (and this code need to be removed), or its a
* MIT cache (or new Heimdal cache), lets change it to our current
* format.
*/
{
uint32_t mask = 0xffff0000;
creds->flags.i = 0;
creds->flags.b.anonymous = 1;
if (creds->flags.i & mask)
mask = ~mask;
if (dummy32 & mask)
dummy32 = bitswap32(dummy32);
}
creds->flags.i = dummy32;
ret = krb5_ret_addrs (sp, &creds->addresses);
if(ret) goto cleanup;
ret = krb5_ret_authdata (sp, &creds->authdata);
if(ret) goto cleanup;
ret = krb5_ret_data (sp, &creds->ticket);
if(ret) goto cleanup;
ret = krb5_ret_data (sp, &creds->second_ticket);
cleanup:
if(ret) {
#if 0
krb5_free_cred_contents(context, creds); /* XXX */
#endif
}
return ret;
}
#define SC_CLIENT_PRINCIPAL 0x0001
#define SC_SERVER_PRINCIPAL 0x0002
#define SC_SESSION_KEY 0x0004
#define SC_TICKET 0x0008
#define SC_SECOND_TICKET 0x0010
#define SC_AUTHDATA 0x0020
#define SC_ADDRESSES 0x0040
/*
*
*/
krb5_error_code KRB5_LIB_FUNCTION
krb5_store_creds_tag(krb5_storage *sp, krb5_creds *creds)
{
int ret;
int32_t header = 0;
if (creds->client)
header |= SC_CLIENT_PRINCIPAL;
if (creds->server)
header |= SC_SERVER_PRINCIPAL;
if (creds->session.keyvalue.data)
header |= SC_SESSION_KEY;
if (creds->ticket.data)
header |= SC_TICKET;
if (creds->second_ticket.length)
header |= SC_SECOND_TICKET;
if (creds->authdata.len)
header |= SC_AUTHDATA;
if (creds->addresses.len)
header |= SC_ADDRESSES;
ret = krb5_store_int32(sp, header);
if (creds->client) {
ret = krb5_store_principal(sp, creds->client);
if(ret)
return ret;
}
if (creds->server) {
ret = krb5_store_principal(sp, creds->server);
if(ret)
return ret;
}
if (creds->session.keyvalue.data) {
ret = krb5_store_keyblock(sp, creds->session);
if(ret)
return ret;
}
ret = krb5_store_times(sp, creds->times);
if(ret)
return ret;
ret = krb5_store_int8(sp, creds->second_ticket.length != 0); /* is_skey */
if(ret)
return ret;
ret = krb5_store_int32(sp, bitswap32(TicketFlags2int(creds->flags.b)));
if(ret)
return ret;
if (creds->addresses.len) {
ret = krb5_store_addrs(sp, creds->addresses);
if(ret)
return ret;
}
if (creds->authdata.len) {
ret = krb5_store_authdata(sp, creds->authdata);
if(ret)
return ret;
}
if (creds->ticket.data) {
ret = krb5_store_data(sp, creds->ticket);
if(ret)
return ret;
}
if (creds->second_ticket.data) {
ret = krb5_store_data(sp, creds->second_ticket);
if (ret)
return ret;
}
return ret;
}
krb5_error_code KRB5_LIB_FUNCTION
krb5_ret_creds_tag(krb5_storage *sp,
krb5_creds *creds)
{
krb5_error_code ret;
int8_t dummy8;
int32_t dummy32, header;
memset(creds, 0, sizeof(*creds));
ret = krb5_ret_int32 (sp, &header);
if (ret) goto cleanup;
if (header & SC_CLIENT_PRINCIPAL) {
ret = krb5_ret_principal (sp, &creds->client);
if(ret) goto cleanup;
}
if (header & SC_SERVER_PRINCIPAL) {
ret = krb5_ret_principal (sp, &creds->server);
if(ret) goto cleanup;
}
if (header & SC_SESSION_KEY) {
ret = krb5_ret_keyblock (sp, &creds->session);
if(ret) goto cleanup;
}
ret = krb5_ret_times (sp, &creds->times);
if(ret) goto cleanup;
ret = krb5_ret_int8 (sp, &dummy8);
if(ret) goto cleanup;
ret = krb5_ret_int32 (sp, &dummy32);
if(ret) goto cleanup;
/*
* Runtime detect the what is the higher bits of the bitfield. If
* any of the higher bits are set in the input data, its either a
* new ticket flag (and this code need to be removed), or its a
* MIT cache (or new Heimdal cache), lets change it to our current
* format.
*/
{
uint32_t mask = 0xffff0000;
creds->flags.i = 0;
creds->flags.b.anonymous = 1;
if (creds->flags.i & mask)
mask = ~mask;
if (dummy32 & mask)
dummy32 = bitswap32(dummy32);
}
creds->flags.i = dummy32;
if (header & SC_ADDRESSES) {
ret = krb5_ret_addrs (sp, &creds->addresses);
if(ret) goto cleanup;
}
if (header & SC_AUTHDATA) {
ret = krb5_ret_authdata (sp, &creds->authdata);
if(ret) goto cleanup;
}
if (header & SC_TICKET) {
ret = krb5_ret_data (sp, &creds->ticket);
if(ret) goto cleanup;
}
if (header & SC_SECOND_TICKET) {
ret = krb5_ret_data (sp, &creds->second_ticket);
if(ret) goto cleanup;
}
cleanup:
if(ret) {
#if 0
krb5_free_cred_contents(context, creds); /* XXX */
#endif
}
return ret;
}
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