denozord/strongswan-ext
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- added verify function to all payload types

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This commit is contained in:
Jan Hutter
2005-11-17 12:49:35 +00:00
parent 9e64c7e03a
commit e31eb71e1c
9 changed files with 413 additions and 2 deletions
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Source/charon/payloads/sa_payload.c
+79 -1
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@@ -102,6 +102,80 @@ encoding_rule_t sa_payload_encodings[] = {
{ PROPOSALS, offsetof(private_sa_payload_t, proposals) }
};
/*
1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! Next Payload !C! RESERVED ! Payload Length !
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! !
~ <Proposals> ~
! !
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
/**
* Implements payload_t's verify function.
* See #payload_s.verify for description.
*/
static status_t verify(private_sa_payload_t *this)
{
int proposal_number = 1;
status_t status;
linked_list_iterator_t *iterator;
bool first = TRUE;
if (this->critical)
{
/* critical bit set! */
return FAILED;
}
/* check proposal numbering */
status = this->proposals->create_iterator(this->proposals,&iterator,TRUE);
if (status != SUCCESS)
{
return status;
}
while(iterator->has_next(iterator))
{
proposal_substructure_t *current_proposal;
status = iterator->current(iterator,(void **)&current_proposal);
{
break;
}
if (current_proposal->get_proposal_number(current_proposal) > proposal_number)
{
if (first)
{
/* first number must be 1 */
status = FAILED;
break;
}
if (current_proposal->get_proposal_number(current_proposal) != (proposal_number + 1))
{
/* must be only one more then previous proposal */
status = FAILED;
break;
}
}
else if (current_proposal->get_proposal_number(current_proposal) < proposal_number)
{
iterator->destroy(iterator);
/* must not be smaller then proceeding one */
status = FAILED;
break;
}
first = FALSE;
}
iterator->destroy(iterator);
return status;
}
/**
* Implements payload_t's and sa_payload_t's destroy function.
* See #payload_s.destroy or sa_payload_s.destroy for description.
@@ -234,12 +308,16 @@ sa_payload_t *sa_payload_create()
return NULL;
}
/* public interface */
this->public.payload_interface.verify = (status_t (*) (payload_t *))verify;
this->public.payload_interface.get_encoding_rules = (status_t (*) (payload_t *, encoding_rule_t **, size_t *) ) get_encoding_rules;
this->public.payload_interface.get_length = (size_t (*) (payload_t *)) get_length;
this->public.payload_interface.get_next_type = (payload_type_t (*) (payload_t *)) get_next_type;
this->public.payload_interface.set_next_type = (status_t (*) (payload_t *,payload_type_t)) set_next_type;
this->public.payload_interface.get_type = (payload_type_t (*) (payload_t *)) get_type;
this->public.payload_interface.destroy = (status_t (*) (payload_t *))destroy;
/* public functions */
this->public.create_proposal_substructure_iterator = (status_t (*) (sa_payload_t *,linked_list_iterator_t **,bool)) create_proposal_substructure_iterator;
this->public.add_proposal_substructure = (status_t (*) (sa_payload_t *,proposal_substructure_t *)) add_proposal_substructure;
this->public.destroy = (status_t (*) (sa_payload_t *)) destroy;
@@ -248,7 +326,7 @@ sa_payload_t *sa_payload_create()
this->compute_length = compute_length;
/* set default values of the fields */
this->critical = SA_PAYLOAD_CRITICAL_FLAG;
this->critical = 1;//SA_PAYLOAD_CRITICAL_FLAG;
this->next_payload = NO_PAYLOAD;
this->payload_length = SA_PAYLOAD_HEADER_LENGTH;