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/*****
*
* Copyright (C) 2003-2005,2006,2007 PreludeIDS Technologies. All Rights Reserved.
* Author: Nicolas Delon <nicolas.delon@prelude-ids.com>
*
* This file is part of the Prelude library.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
*****/
#include "libmissing.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include "prelude-error.h"
#include "prelude-inttypes.h"
#include "prelude-string.h"
#include "common.h"
#include "idmef-data.h"
/*
* Data structure may be free'd
*/
#define IDMEF_DATA_OWN_STRUCTURE 0x1
/*
* Data content may be free'd
*/
#define IDMEF_DATA_OWN_DATA 0x2
#define IDMEF_DATA_DECL(idmef_data_type, c_type, name) \
int idmef_data_new_ ## name(idmef_data_t **nd, c_type val) \
{ \
int ret; \
\
ret = idmef_data_new(nd); \
if ( ret < 0 ) \
return ret; \
\
idmef_data_set_ ## name(*nd, val); \
\
return ret; \
} \
\
void idmef_data_set_ ## name(idmef_data_t *ptr, c_type val) \
{ \
prelude_return_if_fail(ptr); \
idmef_data_destroy_internal(ptr); \
ptr->type = idmef_data_type; \
ptr->len = sizeof(val); \
ptr->data.name ## _data = val; \
} \
\
c_type idmef_data_get_ ## name(const idmef_data_t *ptr) \
{ \
return ptr->data.name ## _data; \
}
IDMEF_DATA_DECL(IDMEF_DATA_TYPE_CHAR, char, char)
IDMEF_DATA_DECL(IDMEF_DATA_TYPE_BYTE, uint8_t, byte)
IDMEF_DATA_DECL(IDMEF_DATA_TYPE_UINT32, uint32_t, uint32)
IDMEF_DATA_DECL(IDMEF_DATA_TYPE_UINT64, uint64_t, uint64)
IDMEF_DATA_DECL(IDMEF_DATA_TYPE_FLOAT, float, float)
int idmef_data_new(idmef_data_t **data)
{
*data = calloc(1, sizeof(**data));
if ( ! *data )
return prelude_error_from_errno(errno);
(*data)->refcount = 1;
(*data)->flags |= IDMEF_DATA_OWN_STRUCTURE;
return 0;
}
idmef_data_t *idmef_data_ref(idmef_data_t *data)
{
prelude_return_val_if_fail(data, NULL);
data->refcount++;
return data;
}
int idmef_data_set_ptr_ref_fast(idmef_data_t *data, idmef_data_type_t type, const void *ptr, size_t len)
{
prelude_return_val_if_fail(data, prelude_error(PRELUDE_ERROR_ASSERTION));
prelude_return_val_if_fail(ptr, prelude_error(PRELUDE_ERROR_ASSERTION));
idmef_data_destroy_internal(data);
data->type = type;
data->data.ro_data = ptr;
data->len = len;
return 0;
}
int idmef_data_set_ptr_dup_fast(idmef_data_t *data, idmef_data_type_t type, const void *ptr, size_t len)
{
void *new;
prelude_return_val_if_fail(data, prelude_error(PRELUDE_ERROR_ASSERTION));
prelude_return_val_if_fail(ptr, prelude_error(PRELUDE_ERROR_ASSERTION));
idmef_data_destroy_internal(data);
new = malloc(len);
if ( ! new )
return -1;
memcpy(new, ptr, len);
data->type = type;
data->data.rw_data = new;
data->len = len;
data->flags |= IDMEF_DATA_OWN_DATA;
return 0;
}
int idmef_data_set_ptr_nodup_fast(idmef_data_t *data, idmef_data_type_t type, void *ptr, size_t len)
{
prelude_return_val_if_fail(data, prelude_error(PRELUDE_ERROR_ASSERTION));
prelude_return_val_if_fail(ptr, prelude_error(PRELUDE_ERROR_ASSERTION));
idmef_data_destroy_internal(data);
data->type = type;
data->data.rw_data= ptr;
data->len = len;
data->flags |= IDMEF_DATA_OWN_DATA;
return 0;
}
int idmef_data_new_ptr_ref_fast(idmef_data_t **data, idmef_data_type_t type, const void *ptr, size_t len)
{
int ret;
ret = idmef_data_new(data);
if ( ret < 0 )
return ret;
ret = idmef_data_set_ptr_ref_fast(*data, type, ptr, len);
if ( ret < 0 )
idmef_data_destroy(*data);
return ret;
}
int idmef_data_new_ptr_dup_fast(idmef_data_t **data, idmef_data_type_t type, const void *ptr, size_t len)
{
int ret;
ret = idmef_data_new(data);
if ( ret < 0 )
return ret;
ret = idmef_data_set_ptr_dup_fast(*data, type, ptr, len);
if ( ret < 0 )
idmef_data_destroy(*data);
return ret;
}
int idmef_data_new_ptr_nodup_fast(idmef_data_t **data, idmef_data_type_t type, void *ptr, size_t len)
{
int ret;
ret = idmef_data_new(data);
if ( ret < 0 )
return ret;
ret = idmef_data_set_ptr_nodup_fast(*data, type, ptr, len);
if ( ret < 0 )
idmef_data_destroy(*data);
return ret;
}
/**
* idmef_data_copy_ref:
* @src: Source #idmef_data_t object.
* @dst: Destination #idmef_data_t object.
*
* Makes @dst reference the same buffer as @src.
*
* Returns: 0 on success, a negative value if an error occured.
*/
int idmef_data_copy_ref(const idmef_data_t *src, idmef_data_t *dst)
{
prelude_return_val_if_fail(src, prelude_error(PRELUDE_ERROR_ASSERTION));
prelude_return_val_if_fail(dst, prelude_error(PRELUDE_ERROR_ASSERTION));
idmef_data_destroy_internal(dst);
dst->type = src->type;
dst->len = src->len;
dst->data = src->data;
dst->flags &= ~IDMEF_DATA_OWN_DATA;
return 0;
}
/**
* idmef_data_copy_dup:
* @src: Source #idmef_data_t object.
* @dst: Destination #idmef_data_t object.
*
* Copies @src to @dst, including the associated buffer.
* This is an alternative to idmef_data_clone().
*
* Returns: 0 on success, a negative value if an error occured.
*/
int idmef_data_copy_dup(const idmef_data_t *src, idmef_data_t *dst)
{
prelude_return_val_if_fail(src, prelude_error(PRELUDE_ERROR_ASSERTION));
prelude_return_val_if_fail(dst, prelude_error(PRELUDE_ERROR_ASSERTION));
idmef_data_destroy_internal(dst);
dst->type = src->type;
dst->flags |= IDMEF_DATA_OWN_DATA;
dst->len = src->len;
if ( src->type == IDMEF_DATA_TYPE_CHAR_STRING || src->type == IDMEF_DATA_TYPE_BYTE_STRING ) {
dst->data.rw_data = malloc(src->len);
if ( ! dst->data.rw_data )
return -1;
memcpy(dst->data.rw_data, src->data.ro_data, src->len);
} else {
dst->data = src->data;
}
return 0;
}
int idmef_data_clone(const idmef_data_t *src, idmef_data_t **dst)
{
int ret;
prelude_return_val_if_fail(src, prelude_error(PRELUDE_ERROR_ASSERTION));
ret = idmef_data_new(dst);
if ( ret < 0 )
return ret;
ret = idmef_data_copy_dup(src, *dst);
if ( ret < 0 )
idmef_data_destroy(*dst);
return ret;
}
const char *idmef_data_get_char_string(const idmef_data_t *data)
{
prelude_return_val_if_fail(data, NULL);
return data->data.ro_data;
}
const unsigned char *idmef_data_get_byte_string(const idmef_data_t *data)
{
prelude_return_val_if_fail(data, NULL);
return data->data.ro_data;
}
/**
* idmef_data_get_type
* @data: Pointer to an #idmef_data_t object.
*
* Returns: the type of the embedded data.
*/
idmef_data_type_t idmef_data_get_type(const idmef_data_t *data)
{
prelude_return_val_if_fail(data, prelude_error(PRELUDE_ERROR_ASSERTION));
return data->type;
}
/**
* idmef_data_get_len:
* @data: Pointer to an #idmef_data_t object.
*
* Returns: the length of data contained within @data object.
*/
size_t idmef_data_get_len(const idmef_data_t *data)
{
prelude_return_val_if_fail(data, 0);
return data->len;
}
/**
* idmef_data_get_data:
* @data: Pointer to an #idmef_data_t object.
*
* Returns: the data contained within @data object.
*/
const void *idmef_data_get_data(const idmef_data_t *data)
{
prelude_return_val_if_fail(data, NULL);
switch ( data->type ) {
case IDMEF_DATA_TYPE_UNKNOWN:
return NULL;
case IDMEF_DATA_TYPE_CHAR_STRING: case IDMEF_DATA_TYPE_BYTE_STRING:
return data->data.ro_data;
default:
return &data->data;
}
return NULL;
}
/**
* idmef_data_is_empty:
* @data: Pointer to an #idmef_data_t object.
*
* Returns: TRUE if empty, FALSE otherwise.
*/
prelude_bool_t idmef_data_is_empty(const idmef_data_t *data)
{
prelude_return_val_if_fail(data, TRUE);
return (data->len == 0) ? TRUE : FALSE;
}
static int bytes_to_string(prelude_string_t *out, const unsigned char *src, size_t size)
{
char c;
int ret;
static const char b64tbl[64] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
while ( size ) {
ret = prelude_string_ncat(out, &b64tbl[(src[0] >> 2) & 0x3f], 1);
if ( ret < 0 )
return ret;
c = b64tbl[((src[0] << 4) + ((--size) ? src[1] >> 4 : 0)) & 0x3f];
ret = prelude_string_ncat(out, &c, 1);
if ( ret < 0 )
return ret;
c = (size) ? b64tbl[((src[1] << 2) + ((--size) ? src[2] >> 6 : 0)) & 0x3f] : '=';
ret = prelude_string_ncat(out, &c, 1);
if ( ret < 0 )
return ret;
c = (size && size--) ? b64tbl[src[2] & 0x3f] : '=';
ret = prelude_string_ncat(out, &c, 1);
if ( ret < 0 )
return ret;
src += 3;
}
return 0;
}
/**
* idmef_data_to_string:
* @data: Pointer to an #idmef_data_t object.
* @out: Pointer to a #prelude_string_t to store the formated data into.
*
* Formats data contained within @data to be printable,
* and stores the result in the provided @out buffer.
*
* Returns: 0 on success, a negative value if an error occured.
*/
int idmef_data_to_string(const idmef_data_t *data, prelude_string_t *out)
{
int ret = 0;
prelude_return_val_if_fail(data, prelude_error(PRELUDE_ERROR_ASSERTION));
prelude_return_val_if_fail(out, prelude_error(PRELUDE_ERROR_ASSERTION));
switch ( data->type ) {
case IDMEF_DATA_TYPE_UNKNOWN:
return 0;
case IDMEF_DATA_TYPE_CHAR:
ret = prelude_string_sprintf(out, "%c", data->data.char_data);
break;
case IDMEF_DATA_TYPE_BYTE:
/*
* %hh convertion specifier is not portable.
*/
ret = prelude_string_sprintf(out, "%u", (unsigned int) data->data.byte_data);
break;
case IDMEF_DATA_TYPE_UINT32:
ret = prelude_string_sprintf(out, "%u", data->data.uint32_data);
break;
case IDMEF_DATA_TYPE_UINT64:
ret = prelude_string_sprintf(out, "%" PRELUDE_PRIu64, data->data.uint64_data);
break;
case IDMEF_DATA_TYPE_FLOAT:
ret = prelude_string_sprintf(out, "%f", data->data.float_data);
break;
case IDMEF_DATA_TYPE_CHAR_STRING:
ret = prelude_string_sprintf(out, "%s", (const char *) data->data.ro_data);
break;
case IDMEF_DATA_TYPE_BYTE_STRING:
ret = bytes_to_string(out, data->data.ro_data, data->len);
break;
}
return ret;
}
/*
* This function cannot be declared static because it is invoked
* from idmef-tree-wrap.c
*/
void idmef_data_destroy_internal(idmef_data_t *ptr)
{
prelude_return_if_fail(ptr);
if ( (ptr->type == IDMEF_DATA_TYPE_CHAR_STRING || ptr->type == IDMEF_DATA_TYPE_BYTE_STRING) &&
ptr->flags & IDMEF_DATA_OWN_DATA ) {
free(ptr->data.rw_data);
ptr->data.rw_data = NULL;
}
/*
* free() should be done by the caller
*/
}
/**
* idmef_data_destroy:
* @data: Pointer to an #idmef_data_t object.
*
* Frees @data. The buffer pointed by @data will be freed if
* the @data object is marked as _dup or _nodup.
*/
void idmef_data_destroy(idmef_data_t *data)
{
prelude_return_if_fail(data);
if ( --data->refcount )
return;
idmef_data_destroy_internal(data);
if ( data->flags & IDMEF_DATA_OWN_STRUCTURE )
free(data);
}
int idmef_data_new_char_string_ref_fast(idmef_data_t **data, const char *ptr, size_t len)
{
return idmef_data_new_ptr_ref_fast(data, IDMEF_DATA_TYPE_CHAR_STRING, ptr, len + 1);
}
int idmef_data_new_char_string_dup_fast(idmef_data_t **data, const char *ptr, size_t len)
{
return idmef_data_new_ptr_dup_fast(data, IDMEF_DATA_TYPE_CHAR_STRING, ptr, len + 1);
}
int idmef_data_new_char_string_nodup_fast(idmef_data_t **data, char *ptr, size_t len)
{
return idmef_data_new_ptr_nodup_fast(data, IDMEF_DATA_TYPE_CHAR_STRING, ptr, len + 1);
}
int idmef_data_set_char_string_ref_fast(idmef_data_t *data, const char *ptr, size_t len)
{
return idmef_data_set_ptr_ref_fast(data, IDMEF_DATA_TYPE_CHAR_STRING, ptr, len + 1);
}
int idmef_data_set_char_string_dup_fast(idmef_data_t *data, const char *ptr, size_t len)
{
return idmef_data_set_ptr_dup_fast(data, IDMEF_DATA_TYPE_CHAR_STRING, ptr, len + 1);
}
int idmef_data_set_char_string_nodup_fast(idmef_data_t *data, char *ptr, size_t len)
{
return idmef_data_set_ptr_nodup_fast(data, IDMEF_DATA_TYPE_CHAR_STRING, ptr, len + 1);
}
int idmef_data_new_char_string_ref(idmef_data_t **data, const char *ptr)
{
prelude_return_val_if_fail(ptr, prelude_error(PRELUDE_ERROR_ASSERTION));
return idmef_data_new_char_string_ref_fast(data, ptr, strlen(ptr));
}
int idmef_data_new_char_string_dup(idmef_data_t **data, const char *ptr)
{
prelude_return_val_if_fail(ptr, prelude_error(PRELUDE_ERROR_ASSERTION));
return idmef_data_new_char_string_dup_fast(data, ptr, strlen(ptr));
}
int idmef_data_new_char_string_nodup(idmef_data_t **data, char *ptr)
{
prelude_return_val_if_fail(ptr, prelude_error(PRELUDE_ERROR_ASSERTION));
return idmef_data_new_char_string_nodup_fast(data, ptr, strlen(ptr));
}
int idmef_data_set_char_string_ref(idmef_data_t *data, const char *ptr)
{
prelude_return_val_if_fail(data, prelude_error(PRELUDE_ERROR_ASSERTION));
prelude_return_val_if_fail(ptr, prelude_error(PRELUDE_ERROR_ASSERTION));
return idmef_data_set_char_string_ref_fast(data, ptr, strlen(ptr));
}
int idmef_data_set_char_string_dup(idmef_data_t *data, const char *ptr)
{
prelude_return_val_if_fail(data, prelude_error(PRELUDE_ERROR_ASSERTION));
prelude_return_val_if_fail(ptr, prelude_error(PRELUDE_ERROR_ASSERTION));
return idmef_data_set_char_string_dup_fast(data, ptr, strlen(ptr));
}
int idmef_data_set_char_string_nodup(idmef_data_t *data, char *ptr)
{
prelude_return_val_if_fail(data, prelude_error(PRELUDE_ERROR_ASSERTION));
prelude_return_val_if_fail(ptr, prelude_error(PRELUDE_ERROR_ASSERTION));
return idmef_data_set_char_string_nodup_fast(data, ptr, strlen(ptr));
}
/*
*
*/
int idmef_data_new_byte_string_ref(idmef_data_t **data, const unsigned char *ptr, size_t len)
{
return idmef_data_new_ptr_ref_fast(data, IDMEF_DATA_TYPE_BYTE_STRING, ptr, len);
}
int idmef_data_new_byte_string_dup(idmef_data_t **data, const unsigned char *ptr, size_t len)
{
return idmef_data_new_ptr_dup_fast(data, IDMEF_DATA_TYPE_BYTE_STRING, ptr, len);
}
int idmef_data_new_byte_string_nodup(idmef_data_t **data, unsigned char *ptr, size_t len)
{
return idmef_data_new_ptr_nodup_fast(data, IDMEF_DATA_TYPE_BYTE_STRING, ptr, len);
}
int idmef_data_set_byte_string_ref(idmef_data_t *data, const unsigned char *ptr, size_t len)
{
return idmef_data_set_ptr_ref_fast(data, IDMEF_DATA_TYPE_BYTE_STRING, ptr, len);
}
int idmef_data_set_byte_string_dup(idmef_data_t *data, const unsigned char *ptr, size_t len)
{
return idmef_data_set_ptr_dup_fast(data, IDMEF_DATA_TYPE_BYTE_STRING, ptr, len);
}
int idmef_data_set_byte_string_nodup(idmef_data_t *data, unsigned char *ptr, size_t len)
{
return idmef_data_set_ptr_nodup_fast(data, IDMEF_DATA_TYPE_BYTE_STRING, ptr, len);
}
int idmef_data_compare(const idmef_data_t *data1, const idmef_data_t *data2)
{
if ( ! data1 && ! data2 )
return 0;
else if ( ! data1 || ! data2 )
return (data1) ? 1 : -1;
else if ( data1->len != data2->len )
return (data1->len > data2->len) ? 1 : -1;
else if ( data1->type != data2->type )
return -1;
if ( data1->type == IDMEF_DATA_TYPE_CHAR_STRING || data1->type == IDMEF_DATA_TYPE_BYTE_STRING )
return memcmp(data1->data.ro_data, data2->data.ro_data, data1->len);
else
return memcmp(&data1->data.char_data, &data2->data.char_data, data1->len);
}
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