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ENGINE's init() and finish() handler functions are used when the ENGINE is

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being enabled or disabled (respectively) for operation. Additionally, each
ENGINE has a constructor function where it can do more 'structural' level
intialisations such as loading error strings, creating "ex_data" indices,
etc. This change introduces a handler function that gives an ENGINE a
corresponding opportunity to cleanup when the ENGINE is being destroyed. It
also adds the "get/set" API functions that control this "destroy" handler
function in an ENGINE.
This commit is contained in:
Geoff Thorpe 2001-09-05 18:32:23 +00:00
parent 541814c403
commit f524ddbe04
3 changed files with 18 additions and 0 deletions
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2
crypto/engine/engine.h
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@ -371,6 +371,7 @@ int ENGINE_set_DH(ENGINE *e, const DH_METHOD *dh_meth);
int ENGINE_set_RAND(ENGINE *e, const RAND_METHOD *rand_meth);
int ENGINE_set_BN_mod_exp(ENGINE *e, BN_MOD_EXP bn_mod_exp);
int ENGINE_set_BN_mod_exp_crt(ENGINE *e, BN_MOD_EXP_CRT bn_mod_exp_crt);
int ENGINE_set_destroy_function(ENGINE *e, ENGINE_GEN_INT_FUNC_PTR destroy_f);
int ENGINE_set_init_function(ENGINE *e, ENGINE_GEN_INT_FUNC_PTR init_f);
int ENGINE_set_finish_function(ENGINE *e, ENGINE_GEN_INT_FUNC_PTR finish_f);
int ENGINE_set_ctrl_function(ENGINE *e, ENGINE_CTRL_FUNC_PTR ctrl_f);
@ -409,6 +410,7 @@ int ENGINE_cipher_num(const ENGINE *e);
const EVP_CIPHER *ENGINE_get_cipher(const ENGINE *e, int n);
BN_MOD_EXP ENGINE_get_BN_mod_exp(const ENGINE *e);
BN_MOD_EXP_CRT ENGINE_get_BN_mod_exp_crt(const ENGINE *e);
ENGINE_GEN_INT_FUNC_PTR ENGINE_get_destroy_function(const ENGINE *e);
ENGINE_GEN_INT_FUNC_PTR ENGINE_get_init_function(const ENGINE *e);
ENGINE_GEN_INT_FUNC_PTR ENGINE_get_finish_function(const ENGINE *e);
ENGINE_CTRL_FUNC_PTR ENGINE_get_ctrl_function(const ENGINE *e);

1
crypto/engine/engine_int.h
View File

@ -112,6 +112,7 @@ struct engine_st
BN_MOD_EXP bn_mod_exp;
BN_MOD_EXP_CRT bn_mod_exp_crt;
ENGINE_GEN_INT_FUNC_PTR destroy;
ENGINE_GEN_INT_FUNC_PTR init;
ENGINE_GEN_INT_FUNC_PTR finish;
ENGINE_CTRL_FUNC_PTR ctrl;

15
crypto/engine/engine_list.c
View File

@ -415,6 +415,10 @@ static int ENGINE_free_util(ENGINE *e, int locked)
abort();
}
#endif
/* Give the ENGINE a chance to do any structural cleanup corresponding
* to allocation it did in its constructor (eg. unload error strings) */
if(e->destroy)
e->destroy(e);
sk_ENGINE_EVP_CIPHER_pop_free(e->ciphers,ENGINE_free_engine_cipher);
CRYPTO_free_ex_data(CRYPTO_EX_INDEX_ENGINE, e, &e->ex_data);
OPENSSL_free(e);
@ -532,6 +536,12 @@ int ENGINE_set_BN_mod_exp_crt(ENGINE *e, BN_MOD_EXP_CRT bn_mod_exp_crt)
return 1;
}
int ENGINE_set_destroy_function(ENGINE *e, ENGINE_GEN_INT_FUNC_PTR destroy_f)
{
e->destroy = destroy_f;
return 1;
}
int ENGINE_set_init_function(ENGINE *e, ENGINE_GEN_INT_FUNC_PTR init_f)
{
e->init = init_f;
@ -648,6 +658,11 @@ BN_MOD_EXP_CRT ENGINE_get_BN_mod_exp_crt(const ENGINE *e)
return e->bn_mod_exp_crt;
}
ENGINE_GEN_INT_FUNC_PTR ENGINE_get_destroy_function(const ENGINE *e)
{
return e->destroy;
}
ENGINE_GEN_INT_FUNC_PTR ENGINE_get_init_function(const ENGINE *e)
{
return e->init;