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Prevent calling code from doing the allocation of the ENGINE structure.

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This was a bad idea in the first place, in particular it would have made
it trickier to implement error-handling, particularly when shutting down
third-party shared libraries etc.
This commit is contained in:
Geoff Thorpe 2000-05-26 15:21:47 +00:00
parent 71c8e9f1c3
commit 0e0e569cbf
2 changed files with 37 additions and 2 deletions
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19
crypto/engine/engine.h
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@ -133,8 +133,17 @@ ENGINE *ENGINE_by_id(const char *id);
* implementations of things prior to using it directly or adding
* it to the builtin ENGINE list in OpenSSL. These are also here
* so that the ENGINE structure doesn't have to be exposed and
* break binary compatibility! */
* break binary compatibility!
*
* NB: I'm changing ENGINE_new to force the ENGINE structure to
* be allocated from within OpenSSL. See the comment for
* ENGINE_get_struct_size().
*/
#if 0
ENGINE *ENGINE_new(ENGINE *e);
#else
ENGINE *ENGINE_new(void);
#endif
int ENGINE_free(ENGINE *e);
int ENGINE_set_id(ENGINE *e, const char *id);
int ENGINE_set_name(ENGINE *e, const char *name);
@ -164,8 +173,14 @@ BN_MOD_EXP_CRT ENGINE_get_BN_mod_exp_crt(ENGINE *e);
* structure (for good reason). However, if the caller wishes to use
* its own memory allocation or use a static array, the following call
* should be used to check the amount of memory the ENGINE structure
* will occupy. This will make the code more future-proof. */
* will occupy. This will make the code more future-proof.
*
* NB: I'm "#if 0"-ing this out because it's better to force the use of
* internally allocated memory. See similar change in ENGINE_new().
*/
#if 0
int ENGINE_get_struct_size(void);
#endif
/* FUNCTIONAL functions. These functions deal with ENGINE structures
* that have (or will) be initialised for use. Broadly speaking, the

20
crypto/engine/engine_list.c
View File

@ -335,6 +335,9 @@ ENGINE *ENGINE_by_id(const char *id)
return iterator;
}
/* As per the comments in engine.h, it is generally better all round
* if the ENGINE structure is allocated within this framework. */
#if 0
int ENGINE_get_struct_size(void)
{
return sizeof(ENGINE);
@ -362,6 +365,23 @@ ENGINE *ENGINE_new(ENGINE *e)
ret->struct_ref = 1;
return ret;
}
#else
ENGINE *ENGINE_new(void)
{
ENGINE *ret;
ret = (ENGINE *)Malloc(sizeof(ENGINE));
if(ret == NULL)
{
ENGINEerr(ENGINE_F_ENGINE_NEW, ERR_R_MALLOC_FAILURE);
return NULL;
}
memset(ret, 0, sizeof(ENGINE));
ret->flags = ENGINE_FLAGS_MALLOCED;
ret->struct_ref = 1;
return ret;
}
#endif
int ENGINE_free(ENGINE *e)
{