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proposal: Add IKEv1 transform number on which a proposal is based

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This commit is contained in:
Tobias Brunner 2020-02-06 15:39:45 +01:00
parent 479c85d569
commit e630f2d373
2 changed files with 52 additions and 9 deletions
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37
src/libstrongswan/crypto/proposal/proposal.c
View File

@ -1,5 +1,5 @@
/*
* Copyright (C) 2008-2018 Tobias Brunner
* Copyright (C) 2008-2020 Tobias Brunner
* Copyright (C) 2006-2010 Martin Willi
* Copyright (C) 2013-2015 Andreas Steffen
* HSR Hochschule fuer Technik Rapperswil
@ -70,7 +70,12 @@ struct private_proposal_t {
/**
* Proposal number
*/
u_int number;
uint8_t number;
/**
* Transform number (IKEv1 only)
*/
uint8_t transform_number;
};
/**
@ -455,12 +460,14 @@ METHOD(proposal_t, select_proposal, proposal_t*,
if (flags & PROPOSAL_PREFER_SUPPLIED)
{
selected = proposal_create(this->protocol, this->number);
selected = proposal_create_v1(this->protocol, this->number,
this->transform_number);
selected->set_spi(selected, this->spi);
}
else
{
selected = proposal_create(this->protocol, other->get_number(other));
selected = proposal_create_v1(this->protocol, other->get_number(other),
other->get_transform_number(other));
selected->set_spi(selected, other->get_spi(other));
}
@ -539,12 +546,18 @@ static bool algo_list_equals(private_proposal_t *this, proposal_t *other,
return equals;
}
METHOD(proposal_t, get_number, u_int,
METHOD(proposal_t, get_number, uint8_t,
private_proposal_t *this)
{
return this->number;
}
METHOD(proposal_t, get_transform_number, uint8_t,
private_proposal_t *this)
{
return this->transform_number;
}
METHOD(proposal_t, equals, bool,
private_proposal_t *this, proposal_t *other)
{
@ -598,6 +611,7 @@ METHOD(proposal_t, clone_, proposal_t*,
clone->spi = this->spi;
clone->number = this->number;
clone->transform_number = this->transform_number;
return &clone->public;
}
@ -918,7 +932,8 @@ METHOD(proposal_t, destroy, void,
/*
* Described in header
*/
proposal_t *proposal_create(protocol_id_t protocol, u_int number)
proposal_t *proposal_create_v1(protocol_id_t protocol, uint8_t number,
uint8_t transform)
{
private_proposal_t *this;
@ -935,12 +950,14 @@ proposal_t *proposal_create(protocol_id_t protocol, u_int number)
.set_spi = _set_spi,
.get_spi = _get_spi,
.get_number = _get_number,
.get_transform_number = _get_transform_number,
.equals = _equals,
.clone = _clone_,
.destroy = _destroy,
},
.protocol = protocol,
.number = number,
.transform_number = transform,
.transforms = array_create(sizeof(entry_t), 0),
.types = array_create(sizeof(transform_type_t), 0),
);
@ -948,6 +965,14 @@ proposal_t *proposal_create(protocol_id_t protocol, u_int number)
return &this->public;
}
/*
* Described in header
*/
proposal_t *proposal_create(protocol_id_t protocol, uint8_t number)
{
return proposal_create_v1(protocol, number, 0);
}
/**
* Add supported IKE algorithms to proposal
*/

24
src/libstrongswan/crypto/proposal/proposal.h
View File

@ -1,5 +1,5 @@
/*
* Copyright (C) 2009-2019 Tobias Brunner
* Copyright (C) 2009-2020 Tobias Brunner
* Copyright (C) 2006 Martin Willi
* HSR Hochschule fuer Technik Rapperswil
*
@ -181,7 +181,14 @@ struct proposal_t {
*
* @return proposal number
*/
u_int (*get_number)(proposal_t *this);
uint8_t (*get_number)(proposal_t *this);
/**
* Get number of the transform on which this proposal is based (IKEv1 only)
*
* @return transform number (or 0)
*/
uint8_t (*get_transform_number)(proposal_t *this);
/**
* Check for the equality of two proposals.
@ -212,7 +219,18 @@ struct proposal_t {
* @param number proposal number, as encoded in SA payload
* @return proposal_t object
*/
proposal_t *proposal_create(protocol_id_t protocol, u_int number);
proposal_t *proposal_create(protocol_id_t protocol, uint8_t number);
/**
* Create a proposal for IKE, ESP or AH that includes a transform number.
*
* @param protocol protocol, such as PROTO_ESP
* @param number proposal number, as encoded in SA payload
* @param transform transform number, as encoded in payload
* @return proposal_t object
*/
proposal_t *proposal_create_v1(protocol_id_t protocol, uint8_t number,
uint8_t transform);
/**
* Create a default proposal.