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- compute_length written

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Jan Hutter 2005-11-14 16:03:26 +00:00
parent f3c01a28fe
commit b3fd2b7207
2 changed files with 47 additions and 15 deletions
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9
Source/charon/payloads/transform_attribute.c
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@ -150,6 +150,15 @@ static size_t get_length(private_transform_attribute_t *this)
*/
static status_t set_value (private_transform_attribute_t *this, chunk_t value)
{
if (this->attribute_value.ptr != NULL)
{
/* free existing value */
allocator_free(this->attribute_value.ptr);
this->attribute_value.ptr = NULL;
this->attribute_value.len = 0;
}
if (value.len > 2)
{
this->attribute_value.ptr = allocator_clone_bytes(value.ptr,value.len);

53
Source/charon/payloads/transform_substructure.c
View file

@ -71,6 +71,15 @@ struct private_transform_substructure_s {
* Transforms Attributes are stored in a linked_list_t
*/
linked_list_t *attributes;
/**
* @brief Computes the length of this substructure.
*
* @param this calling private_transform_substructure_t object
* @return
* SUCCESS in any case
*/
status_t (*compute_length) (private_transform_substructure_t *this);
};
@ -158,20 +167,7 @@ static payload_type_t get_next_type(private_transform_substructure_t *this)
*/
static size_t get_length(private_transform_substructure_t *this)
{
linked_list_iterator_t *iterator;
status_t status;
size_t length = TRANSFORM_SUBSTRUCTURE_HEADER_LENGTH;
status = this->attributes->create_iterator(this->attributes,&iterator,TRUE);
if (status != SUCCESS)
return length;
while (iterator->has_next(iterator))
{
payload_t * current_attribute;
iterator->current(iterator,(void **) &current_attribute);
length += current_attribute->get_length(current_attribute);
}
this->transform_length = length;
this->compute_length(this);
return this->transform_length;
}
@ -192,7 +188,7 @@ static status_t create_transform_attribute_iterator (private_transform_substruct
static status_t add_transform_attribute (private_transform_substructure_t *this,transform_attribute_t *attribute)
{
return (this->attributes->insert_last(this->attributes,(void *) attribute));
this->transform_length += ((payload_t *)this->attributes)->get_length(((payload_t *)this->attributes));
this->compute_length(this);
return SUCCESS;
}
@ -253,6 +249,30 @@ static u_int16_t get_transform_id (private_transform_substructure_t *this)
return this->transform_id;
}
/**
* Implements private_transform_substructure_t's compute_length function.
* See #private_transform_substructure_s.compute_length for description.
*/
static status_t compute_length (private_transform_substructure_t *this)
{
linked_list_iterator_t *iterator;
status_t status;
size_t length = TRANSFORM_SUBSTRUCTURE_HEADER_LENGTH;
status = this->attributes->create_iterator(this->attributes,&iterator,TRUE);
if (status != SUCCESS)
{
return length;
}
while (iterator->has_next(iterator))
{
payload_t * current_attribute;
iterator->current(iterator,(void **) &current_attribute);
length += current_attribute->get_length(current_attribute);
}
return SUCCESS;
}
/*
* Described in header
*/
@ -279,6 +299,9 @@ transform_substructure_t *transform_substructure_create()
this->public.get_transform_id = (u_int16_t (*) (transform_substructure_t *)) get_transform_id;
this->public.destroy = (status_t (*) (transform_substructure_t *)) destroy;
/* private functions */
this->compute_length = compute_length;
/* set default values of the fields */
this->next_payload = NO_PAYLOAD;
this->transform_length = TRANSFORM_SUBSTRUCTURE_HEADER_LENGTH;