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-rw-r--r--src/lib/ccapi/common/marshall.c441
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diff --git a/src/lib/ccapi/common/marshall.c b/src/lib/ccapi/common/marshall.c
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-/* $Copyright:
- *
- * Copyright 2004-2006 by the Massachusetts Institute of Technology.
- *
- * All rights reserved.
- *
- * Export of this software from the United States of America may require a
- * specific license from the United States Government. It is the
- * responsibility of any person or organization contemplating export to
- * obtain such a license before exporting.
- *
- * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and distribute
- * this software and its documentation for any purpose and without fee is
- * hereby granted, provided that the above copyright notice appear in all
- * copies and that both that copyright notice and this permission notice
- * appear in supporting documentation, and that the name of M.I.T. not be
- * used in advertising or publicity pertaining to distribution of the
- * software without specific, written prior permission. Furthermore if you
- * modify this software you must label your software as modified software
- * and not distribute it in such a fashion that it might be confused with
- * the original MIT software. M.I.T. makes no representations about the
- * suitability of this software for any purpose. It is provided "as is"
- * without express or implied warranty.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
- * MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Individual source code files are copyright MIT, Cygnus Support,
- * OpenVision, Oracle, Sun Soft, FundsXpress, and others.
- *
- * Project Athena, Athena, Athena MUSE, Discuss, Hesiod, Kerberos, Moira,
- * and Zephyr are trademarks of the Massachusetts Institute of Technology
- * (MIT). No commercial use of these trademarks may be made without prior
- * written permission of MIT.
- *
- * "Commercial use" means use of a name in a product or other for-profit
- * manner. It does NOT prevent a commercial firm from referring to the MIT
- * trademarks in order to convey information (although in doing so,
- * recognition of their trademark status should be given).
- * $
- */
-
-/* marshall.c */
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <CredentialsCache.h>
-#include "msg.h"
-#include "msg_headers.h"
-#include "marshall.h"
-
-cc_int32
-cci_creds_v4_marshall( cc_credentials_v4_t * creds,
- char ** pflat,
- cc_uint32 * plen)
-{
- cc_uint32 len;
- char * flat;
- cci_flat_creds_v4_t * header;
- cc_time64 t64;
-
- if ( creds == NULL || pflat == NULL || plen == NULL )
- return ccErrBadParam;
-
- len = sizeof(cci_flat_creds_v4_t);
- flat = (char *)malloc(len);
- if ( flat == NULL )
- return ccErrNoMem;
- memset(flat, 0, len);
-
- header = (cci_flat_creds_v4_t *)flat;
- header->version = htonl(creds->version);
- memcpy(header->principal, creds->principal, cc_v4_name_size);
- memcpy(header->principal_instance, creds->principal_instance, cc_v4_instance_size);
- memcpy(header->service, creds->service, cc_v4_name_size);
- memcpy(header->service_instance, creds->service_instance, cc_v4_instance_size);
- memcpy(header->realm, creds->realm, cc_v4_realm_size);
- memcpy(header->session_key, creds->session_key, cc_v4_key_size);
- header->kvno = htonl(creds->kvno);
- header->string_to_key_type = htonl(creds->string_to_key_type);
- t64 = creds->issue_date;
- header->issue_date = htonll(t64);
- header->lifetime = htonl(creds->lifetime);
- /* TODO: verify that address is stored in host order */
- header->address = htonl(creds->address);
- header->ticket_size = htonl(creds->ticket_size);
- memcpy(header->ticket, creds->ticket, cc_v4_ticket_size);
-
- *pflat = flat;
- *plen = len;
-
- return ccNoError;
-}
-
-cc_int32
-cci_creds_v4_unmarshall( char * flat,
- cc_uint32 len,
- cc_credentials_union * creds_union)
-{
- struct cci_flat_creds_v4 * header;
- cc_credentials_v4_t * creds;
- cc_time64 t64;
-
- if ( flat == NULL || len == 0 || creds_union == NULL )
- return ccErrBadParam;
-
- creds_union->version = cc_credentials_v4;
-
- header = (cci_flat_creds_v4_t *)flat;
-
- creds = (cc_credentials_v4_t *)malloc(sizeof(cc_credentials_v4_t));
- if ( creds == NULL )
- return ccErrNoMem;
-
- creds->version = ntohl(header->version);
- memcpy(creds->principal, header->principal, cc_v4_name_size);
- memcpy(creds->principal_instance, header->principal_instance, cc_v4_instance_size);
- memcpy(creds->service, header->service, cc_v4_name_size);
- memcpy(creds->service_instance, header->service_instance, cc_v4_instance_size);
- memcpy(creds->realm, header->realm, cc_v4_realm_size);
- memcpy(creds->session_key, header->session_key, cc_v4_key_size);
- creds->kvno = htonl(header->kvno);
- creds->string_to_key_type = htonl(header->string_to_key_type);
- t64 = header->issue_date;
- creds->issue_date = (cc_time64)ntohll(t64);
- creds->lifetime = (cc_int32)ntohl(header->lifetime);
- /* TODO: verify that address is stored in host order */
- creds->address = ntohl(header->address);
- creds->ticket_size = ntohl(header->ticket_size);
- memcpy(creds->ticket, header->ticket, cc_v4_ticket_size);
-
- creds_union->credentials.credentials_v4 = creds;
-
- return ccNoError;
-}
-
-
-static cc_int32
-cci_creds_cc_data_array_count_entries( cc_data ** array, cc_uint32 * pcount)
-{
- cc_uint32 count;
-
- if (array == NULL) {
- *pcount = 0;
- return ccNoError;
- }
-
- for ( count=0; array[count] != NULL ; count++) ;
-
- *pcount = count;
- return ccNoError;
-}
-
-static cc_int32
-cci_creds_v5_compute_flat_size( cc_credentials_v5_t * creds, cc_uint32 * plen)
-{
- cc_uint32 len;
- cc_uint32 i, count;
-
- len = sizeof(struct cci_flat_creds_v5);
-
- if (creds->client)
- len += strlen(creds->client) + 1;
-
- if (creds->server)
- len += strlen(creds->server) + 1;
-
- len += creds->keyblock.length;
-
- cci_creds_cc_data_array_count_entries( creds->addresses, &count );
- len += count * sizeof(cc_flat_data);
- for ( i=0; i<count; i++ ) {
- len += creds->addresses[i]->length;
- }
-
- len += creds->ticket.length;
- len += creds->second_ticket.length;
-
- cci_creds_cc_data_array_count_entries( creds->authdata, &count );
- len += count * sizeof(cc_flat_data);
- for ( i=0; i<count; i++ ) {
- len += creds->authdata[i]->length;
- }
-
- *plen = len;
- return ccNoError;
-}
-
-cc_int32
-cci_creds_v5_marshall( cc_credentials_v5_t * creds,
- char ** pflat,
- cc_uint32 * plen)
-{
- cc_uint32 len;
- char * flat;
- struct cci_flat_creds_v5 * header;
- cc_uint32 length;
- cc_uint32 offset;
- cc_time64 t64;
- cc_uint32 count;
- cc_uint32 i;
-
- if ( creds == NULL || pflat == NULL || plen == NULL )
- return ccErrBadParam;
-
- cci_creds_v5_compute_flat_size(creds, &len);
-
- flat = (char *)malloc(len);
- if ( flat == NULL )
- return ccErrNoMem;
- memset(flat, 0, len);
-
- offset = sizeof(struct cci_flat_creds_v5);
- header = (struct cci_flat_creds_v5 *)flat;
- header->version = htonl(FLAT_CREDS_V5_VERSION);
- if (creds->client) {
- length = strlen(creds->client) + 1;
- header->client.length = htonl(length);
- header->client.data = htonl(offset);
- memcpy(flat + offset, creds->client, length);
- offset += length;
- }
-
- if (creds->server) {
- length = strlen(creds->server) + 1;
- header->server.length = htonl(length);
- header->server.data = htonl(offset);
- memcpy(flat + offset, creds->server, length);
- offset += length;
- }
-
- header->keyblock.type = htonl(creds->keyblock.type);
- if (creds->keyblock.length) {
- length = creds->keyblock.length;
- header->keyblock.length = htonl(length);
- header->keyblock.data = htonl(offset);
- memcpy(flat + offset, creds->keyblock.data, length);
- offset += length;
- }
-
- t64 = creds->authtime;
- header->authtime = htonll(t64);
- t64 = creds->starttime;
- header->starttime = htonll(t64);
- t64 = creds->endtime;
- header->endtime = htonll(t64);
- t64 = creds->renew_till;
- header->renew_till = htonll(t64);
-
- header->is_skey = htonl(creds->is_skey);
- header->ticket_flags = htonl(creds->ticket_flags);
-
- cci_creds_cc_data_array_count_entries( creds->addresses, &count );
- if ( count ) {
- cc_flat_data * addresses = (cc_flat_data *)flat + offset;
- header->address_count = htonl(count);
- header->addresses = htonl(offset);
- offset += count * sizeof(cc_flat_data);
-
- for ( i=0; i < count; i++ ) {
- addresses[i].type = htonl(creds->addresses[i]->type);
- if (creds->addresses[i]->length) {
- length = creds->addresses[i]->length;
- addresses[i].length = htonl(length);
- addresses[i].data = htonl(offset);
- /* TODO: verify that addresses are stored in network order */
- memcpy(flat + offset, creds->addresses[i]->data, length);
- offset += length;
- }
- }
- }
-
- header->ticket.type = htonl(creds->ticket.type);
- if (creds->ticket.length) {
- length = creds->ticket.length;
- header->ticket.length = htonl(length);
- header->ticket.data = htonl(offset);
- memcpy(flat + offset, creds->ticket.data, length);
- offset += length;
- }
-
- header->second_ticket.type = htonl(creds->second_ticket.type);
- if (creds->second_ticket.length) {
- length = creds->second_ticket.length;
- header->second_ticket.length = htonl(length);
- header->second_ticket.data = htonl(offset);
- memcpy(flat + offset, creds->second_ticket.data, length);
- offset += length;
- }
-
- cci_creds_cc_data_array_count_entries( creds->authdata, &count );
- if ( count ) {
- cc_flat_data * authdata = (cc_flat_data *)flat + offset;
-
- header->authdata_count = htonl(count);
- header->authdata = (offset);
- offset += count * sizeof(cc_flat_data);
-
- for ( i=0; i < count; i++ ) {
- authdata[i].type = htonl(creds->authdata[i]->type);
- if (creds->authdata[i]->length) {
- length = creds->authdata[i]->length;
- authdata[i].length = htonl(length);
- authdata[i].data = htonl(offset);
- memcpy(flat + offset, creds->authdata[i]->data, length);
- offset += length;
- }
- }
- }
-
- *pflat = flat;
- *plen = len;
- return ccNoError;
-}
-
-
-// TODO: a much better job of checking for out of memory errors
-// and validating that we do not read beyond the flat input
-// data buffer
-
-cc_int32
-cci_creds_v5_unmarshall( char * flat,
- cc_uint32 len,
- cc_credentials_union * creds_union)
-{
- struct cci_flat_creds_v5 * header;
- cc_credentials_v5_t * creds;
- cc_flat_data * flat_data;
- cc_time64 t64;
- cc_uint32 length;
- cc_uint32 count;
- cc_uint32 i;
-
- if ( flat == NULL || len == 0 || creds_union == NULL )
- return ccErrBadParam;
-
- creds_union->version = cc_credentials_v5;
-
- header = (struct cci_flat_creds_v5 *)flat;
-
- if ( ntohl(header->version) != FLAT_CREDS_V5_VERSION )
- return ccErrBadParam;
-
- creds = (cc_credentials_v5_t *)malloc(sizeof(cc_credentials_v5_t));
- if ( creds == NULL )
- return ccErrNoMem;
- memset(creds, 0, sizeof(cc_credentials_v5_t));
-
- if ( header->client.length ) {
- length = ntohl(header->client.length);
- creds->client = (char *)malloc(length);
- memcpy(creds->client, flat + header->client.data, length);
- }
-
- if ( header->server.length ) {
- length = ntohl(header->server.length);
- creds->server = (char *)malloc(length);
- memcpy(creds->server, flat + header->server.data, length);
- }
-
- creds->keyblock.type = ntohl(header->keyblock.type);
- if ( header->keyblock.length ) {
- length = ntohl(header->keyblock.length);
- creds->keyblock.length = length;
- creds->keyblock.data = malloc(length);
- memcpy(creds->keyblock.data, flat + header->keyblock.data, length);
- }
-
- /* TODO: need to perform overflow validation checks to ensure
- * that we do not attempt to store too large a value into cc_time_t
- * when it is a 32-bit field.
- */
- t64 = ntohll(header->authtime);
- creds->authtime = (cc_time)t64;
- t64 = ntohll(header->starttime);
- creds->starttime = (cc_time)t64;
- t64 = ntohll(header->endtime);
- creds->endtime = (cc_time)t64;
- t64 = ntohll(header->renew_till);
- creds->renew_till = (cc_time)t64;
-
- creds->is_skey = ntohl(header->is_skey);
- creds->ticket_flags = ntohl(header->ticket_flags);
-
- count = ntohl(header->address_count);
- creds->addresses = (cc_data **) malloc((count + 1) * sizeof(cc_data *));
- flat_data = (cc_flat_data *)flat + header->addresses;
- for ( i=0 ; i < count ; i++ ) {
- creds->addresses[i] = (cc_data *)malloc(sizeof(cc_data));
- creds->addresses[i]->type = ntohl(flat_data[i].type);
- length = ntohl(flat_data[i].length);
- creds->addresses[i]->length = length;
- if ( length ) {
- creds->addresses[i]->data = malloc(length);
- /* TODO: verify that addresses are stored in network order */
- memcpy(creds->addresses[i]->data, flat + flat_data[i].data, length);
- } else {
- creds->addresses[i]->data = NULL;
- }
- }
- creds->addresses[i] = NULL;
-
- creds->ticket.type = ntohl(header->ticket.type);
- length = ntohl(header->ticket.length);
- if ( length ) {
- creds->ticket.length = length;
- creds->ticket.data = malloc(length);
- memcpy(creds->ticket.data, flat + header->ticket.data, length);
- }
-
- creds->second_ticket.type = header->second_ticket.type;
- if ( header->second_ticket.length ) {
- creds->second_ticket.length = header->second_ticket.length;
- creds->second_ticket.data = malloc(creds->second_ticket.length);
- memcpy(creds->second_ticket.data, flat + header->second_ticket.data, creds->second_ticket.length);
- }
-
- count = ntohl(header->authdata_count);
- creds->authdata = (cc_data **) malloc((count + 1) * sizeof(cc_data *));
- flat_data = (cc_flat_data *)flat + header->authdata;
- for ( i=0 ; i < count ; i++ ) {
- creds->authdata[i] = (cc_data *)malloc(sizeof(cc_data));
- creds->authdata[i]->type = ntohl(flat_data[i].type);
- length = ntohl(flat_data[i].length);
- creds->authdata[i]->length = length;
- if ( length ) {
- creds->authdata[i]->data = malloc(length);
- memcpy(creds->authdata[i]->data, flat + flat_data[i].data, length);
- } else {
- creds->authdata[i]->data = NULL;
- }
- }
- creds->authdata[i] = NULL;
-
- creds_union->credentials.credentials_v5 = creds;
-
- return ccNoError;
-}
-
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