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Make the 'dynamic' ENGINE bundle up the loading application/library's

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locking callbacks to pass to the loaded library (in addition to the
existing mem, ex_data, and err callbacks). Also change the default
implementation of the "bind_engine" function to apply those callbacks, ie.
the IMPLEMENT_DYNAMIC_BIND_FN macro.
This commit is contained in:
Geoff Thorpe
2001-09-04 21:25:17 +00:00
parent d9ff889073
commit e5e6a94fbf
2 changed files with 40 additions and 8 deletions
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12
crypto/engine/engine_dyn.c
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@@ -375,13 +375,21 @@ static int dynamic_load(ENGINE *e, dynamic_data_ctx *ctx)
/* First binary copy the ENGINE structure so that we can roll back if
* the hand-over fails */
memcpy(&cpy, e, sizeof(ENGINE));
/* Provide the ERR, "ex_data", and memory callbacks so the loaded
* library uses our own state (and locking) rather than its own. */
/* Provide the ERR, "ex_data", memory, and locking callbacks so the
* loaded library uses our state rather than its own. FIXME: As noted in
* engine.h, much of this would be simplified if each area of code
* provided its own "summary" structure of all related callbacks. It
* would also increase opaqueness. */
fns.err_fns = ERR_get_implementation();
fns.ex_data_fns = CRYPTO_get_ex_data_implementation();
CRYPTO_get_mem_functions(&fns.mem_fns.malloc_cb,
&fns.mem_fns.realloc_cb,
&fns.mem_fns.free_cb);
fns.lock_fns.lock_locking_cb = CRYPTO_get_locking_callback();
fns.lock_fns.lock_add_lock_cb = CRYPTO_get_add_lock_callback();
fns.lock_fns.dynlock_create_cb = CRYPTO_get_dynlock_create_callback();
fns.lock_fns.dynlock_lock_cb = CRYPTO_get_dynlock_lock_callback();
fns.lock_fns.dynlock_destroy_cb = CRYPTO_get_dynlock_destroy_callback();
/* Try to bind the ENGINE onto our own ENGINE structure */
if(!ctx->bind_engine(e, ctx->engine_id, &fns))
{