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- generating of proposal substructure

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Jan Hutter 2005-11-14 17:23:59 +00:00
parent 800b308c2a
commit bcf0c3afd4
1 changed files with 65 additions and 3 deletions
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68
Source/charon/generator.c
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@ -33,6 +33,7 @@
#include "utils/linked_list.h"
#include "utils/logger_manager.h"
#include "payloads/payload.h"
#include "payloads/proposal_substructure.h"
#include "payloads/transform_substructure.h"
@ -185,6 +186,11 @@ struct private_generator_s {
*/
u_int32_t last_payload_length_position_offset;
/**
* Last SPI size
*/
u_int8_t last_spi_size;
/*
* Attribute format of the last generated transform attribute
*
@ -197,7 +203,6 @@ struct private_generator_s {
* Depending on the value of attribute_format this field is used
* to hold the length of the transform attribute in bytes
*/
u_int16_t attribute_length;
/**
@ -585,12 +590,68 @@ static status_t generate_payload (private_generator_t *this,payload_t *payload)
status = this->generate_u_int_type(this,U_INT_32,rules[i].offset);
break;
case SPI_SIZE:
/* currently not implemented */
/* spi size is handled as 8 bit unsigned integer */
status = this->generate_u_int_type(this,U_INT_8,rules[i].offset);
this->last_spi_size = *((u_int8_t *)(this->data_struct + rules[i].offset));
break;
case SPI:
{
this->logger->log(this->logger,CONTROL_MORE,"SPI value");
/* the attribute value is generated */
status = this->generate_from_chunk(this,rules[i].offset);
break;
}
case TRANSFORMS:
{
this->logger->log(this->logger,CONTROL_MORE,"Generate Transforms");
/* before iterative generate the transforms, store the current length position */
u_int32_t payload_length_position_offset = this->last_payload_length_position_offset;
u_int16_t length_of_proposal = PROPOSAL_SUBSTRUCTURE_HEADER_LENGTH + this->last_spi_size;
u_int16_t int16_val;
linked_list_t *transforms = *((linked_list_t **)(this->data_struct + rules[i].offset));
linked_list_iterator_t *iterator;
/* create forward iterator */
status = transforms->create_iterator(transforms,&iterator,TRUE);
if (status != SUCCESS)
{
return status;
}
while (iterator->has_next(iterator))
{
payload_t *current_transform;
u_int32_t before_generate_position_offset;
u_int32_t after_generate_position_offset;
status = iterator->current(iterator,(void **)&current_transform);
if (status != SUCCESS)
{
iterator->destroy(iterator);
return status;
}
before_generate_position_offset = (this->out_position - this->buffer);
this->public.generate_payload(&(this->public),current_transform);
after_generate_position_offset = (this->out_position - this->buffer);
/* increase size of transform */
length_of_proposal += (after_generate_position_offset - before_generate_position_offset);
}
iterator->destroy(iterator);
this->logger->log(this->logger,CONTROL_MORE,"Length of Transform is %d, offset is %d",length_of_proposal,payload_length_position_offset);
int16_val = htons(length_of_proposal);
this->write_bytes_to_buffer_at_offset(this,&int16_val,sizeof(u_int16_t),payload_length_position_offset);
break;
}
case TRANSFORM_ATTRIBUTES:
{
this->logger->log(this->logger,CONTROL_MORE,"Generate Transform attributes");
/* before iterative generate the transforms, store the current length position */
/* before iterative generate the transform attributes, store the current length position */
u_int32_t transform_length_position_offset = this->last_payload_length_position_offset;
u_int16_t length_of_transform = TRANSFORM_SUBSTRUCTURE_HEADER_LENGTH;
@ -609,6 +670,7 @@ static status_t generate_payload (private_generator_t *this,payload_t *payload)
payload_t *current_attribute;
u_int32_t before_generate_position_offset;
u_int32_t after_generate_position_offset;
status = iterator->current(iterator,(void **)&current_attribute);
if (status != SUCCESS)
{