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stroke: Permanently store PINs in credential set

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This fixes authentication with tokens that require the PIN for every
signature.

Fixes #1369.
This commit is contained in:
Tobias Brunner
2016-06-06 14:03:23 +02:00
parent 0a72d68ea8
commit 2eb89ee1e3
1 changed files with 41 additions and 18 deletions
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src/libcharon/plugins/stroke/stroke_cred.c
+41 -18
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@@ -754,6 +754,8 @@ typedef struct {
chunk_t keyid;
/** number of tries */
int try;
/** provided PIN */
shared_key_t *shared;
} pin_cb_data_t;
/**
@@ -798,7 +800,9 @@ static shared_key_t* pin_cb(pin_cb_data_t *data, shared_key_type_t type,
{
*match_other = ID_MATCH_NONE;
}
return shared_key_create(SHARED_PIN, chunk_clone(secret));
DESTROY_IF(data->shared);
data->shared = shared_key_create(SHARED_PIN, chunk_clone(secret));
return data->shared->get_ref(data->shared);
}
}
return NULL;
@@ -815,7 +819,7 @@ static bool load_pin(mem_cred_t *secrets, chunk_t line, int line_nr,
private_key_t *key = NULL;
u_int slot;
chunk_t chunk;
shared_key_t *shared;
shared_key_t *shared = NULL;
identification_t *id;
mem_cred_t *mem = NULL;
callback_cred_t *cb = NULL;
@@ -867,10 +871,11 @@ static bool load_pin(mem_cred_t *secrets, chunk_t line, int line_nr,
return TRUE;
}
/* use callback credential set to prompt for the pin */
pin_data.prompt = prompt;
pin_data.card = smartcard;
pin_data.keyid = chunk;
pin_data.try = 0;
pin_data = (pin_cb_data_t){
.prompt = prompt,
.card = smartcard,
.keyid = chunk,
};
cb = callback_cred_create_shared((void*)pin_cb, &pin_data);
lib->credmgr->add_local_set(lib->credmgr, &cb->set, FALSE);
}
@@ -880,30 +885,48 @@ static bool load_pin(mem_cred_t *secrets, chunk_t line, int line_nr,
shared = shared_key_create(SHARED_PIN, secret);
id = identification_create_from_encoding(ID_KEY_ID, chunk);
mem = mem_cred_create();
mem->add_shared(mem, shared, id, NULL);
mem->add_shared(mem, shared->get_ref(shared), id, NULL);
lib->credmgr->add_local_set(lib->credmgr, &mem->set, FALSE);
}
/* unlock: smartcard needs the pin and potentially calls public set */
key = (private_key_t*)load_from_smartcard(format, slot, module, keyid,
CRED_PRIVATE_KEY, KEY_ANY);
if (mem)
{
lib->credmgr->remove_local_set(lib->credmgr, &mem->set);
mem->destroy(mem);
}
if (cb)
{
lib->credmgr->remove_local_set(lib->credmgr, &cb->set);
cb->destroy(cb);
}
chunk_clear(&chunk);
if (key)
{
DBG1(DBG_CFG, " loaded private key from %.*s", (int)sc.len, sc.ptr);
secrets->add_key(secrets, key);
}
if (mem)
{
if (!key)
{
shared->destroy(shared);
shared = NULL;
}
lib->credmgr->remove_local_set(lib->credmgr, &mem->set);
mem->destroy(mem);
}
if (cb)
{
if (key)
{
shared = pin_data.shared;
}
else
{
DESTROY_IF(pin_data.shared);
}
lib->credmgr->remove_local_set(lib->credmgr, &cb->set);
cb->destroy(cb);
}
if (shared)
{
id = identification_create_from_encoding(ID_KEY_ID, chunk);
secrets->add_shared(secrets, shared, id, NULL);
}
chunk_clear(&chunk);
return TRUE;
}