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-rw-r--r--src/libcharon/config/child_cfg.c4
-rw-r--r--src/libcharon/config/proposal.c13
-rw-r--r--src/libcharon/config/proposal.h4
3 files changed, 15 insertions, 6 deletions
diff --git a/src/libcharon/config/child_cfg.c b/src/libcharon/config/child_cfg.c
index b675c908f..33d47a41e 100644
--- a/src/libcharon/config/child_cfg.c
+++ b/src/libcharon/config/child_cfg.c
@@ -165,7 +165,7 @@ METHOD(child_cfg_t, get_proposals, linked_list_t*,
current = current->clone(current);
if (strip_dh)
{
- current->strip_dh(current);
+ current->strip_dh(current, MODP_NONE);
}
proposals->insert_last(proposals, current);
}
@@ -194,7 +194,7 @@ METHOD(child_cfg_t, select_proposal, proposal_t*,
{
if (strip_dh)
{
- stored->strip_dh(stored);
+ stored->strip_dh(stored, MODP_NONE);
}
selected = stored->select(stored, supplied, private);
if (selected)
diff --git a/src/libcharon/config/proposal.c b/src/libcharon/config/proposal.c
index e12fed7ba..4803c7be2 100644
--- a/src/libcharon/config/proposal.c
+++ b/src/libcharon/config/proposal.c
@@ -232,14 +232,21 @@ METHOD(proposal_t, has_dh_group, bool,
}
METHOD(proposal_t, strip_dh, void,
- private_proposal_t *this)
+ private_proposal_t *this, diffie_hellman_group_t keep)
{
+ enumerator_t *enumerator;
algorithm_t *alg;
- while (this->dh_groups->remove_last(this->dh_groups, (void**)&alg) == SUCCESS)
+ enumerator = this->dh_groups->create_enumerator(this->dh_groups);
+ while (enumerator->enumerate(enumerator, (void**)&alg))
{
- free(alg);
+ if (alg->algorithm != keep)
+ {
+ this->dh_groups->remove_at(this->dh_groups, enumerator);
+ free(alg);
+ }
}
+ enumerator->destroy(enumerator);
}
/**
diff --git a/src/libcharon/config/proposal.h b/src/libcharon/config/proposal.h
index 77e200acc..7733143a8 100644
--- a/src/libcharon/config/proposal.h
+++ b/src/libcharon/config/proposal.h
@@ -111,8 +111,10 @@ struct proposal_t {
/**
* Strip DH groups from proposal to use it without PFS.
+ *
+ * @param keep group to keep (MODP_NONE to remove all)
*/
- void (*strip_dh)(proposal_t *this);
+ void (*strip_dh)(proposal_t *this, diffie_hellman_group_t keep);
/**
* Compare two proposal, and select a matching subset.