void engine_table_unregister(ENGINE_TABLE **table, ENGINE *e) { CRYPTO_THREAD_write_lock(global_engine_lock); if (int_table_check(table, 0)) lh_ENGINE_PILE_doall_ENGINE(&(*table)->piles, int_unregister_cb, e); CRYPTO_THREAD_unlock(global_engine_lock); }
int engine_table_register(ENGINE_TABLE **table, ENGINE_CLEANUP_CB *cleanup, ENGINE *e, const int *nids, int num_nids, int setdefault) { int ret = 0, added = 0; ENGINE_PILE tmplate, *fnd; CRYPTO_w_lock(CRYPTO_LOCK_ENGINE); if(!(*table)) added = 1; if(!int_table_check(table, 1)) goto end; if(added) /* The cleanup callback needs to be added */ engine_cleanup_add_first(cleanup); while(num_nids--) { tmplate.nid = *nids; fnd = lh_ENGINE_PILE_retrieve(&(*table)->piles, &tmplate); if(!fnd) { fnd = OPENSSL_malloc(sizeof(ENGINE_PILE)); if(!fnd) goto end; fnd->uptodate = 1; fnd->nid = *nids; fnd->sk = sk_ENGINE_new_null(); if(!fnd->sk) { OPENSSL_free(fnd); goto end; } fnd->funct = NULL; (void)lh_ENGINE_PILE_insert(&(*table)->piles, fnd); } /* A registration shouldn't add duplciate entries */ (void)sk_ENGINE_delete_ptr(fnd->sk, e); /* if 'setdefault', this ENGINE goes to the head of the list */ if(!sk_ENGINE_push(fnd->sk, e)) goto end; /* "touch" this ENGINE_PILE */ fnd->uptodate = 0; if(setdefault) { if(!engine_unlocked_init(e)) { ENGINEerr(ENGINE_F_ENGINE_TABLE_REGISTER, ENGINE_R_INIT_FAILED); goto end; } if(fnd->funct) engine_unlocked_finish(fnd->funct, 0); fnd->funct = e; fnd->uptodate = 1; } nids++; } ret = 1; end: CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE); return ret; }
void engine_table_unregister(ENGINE_TABLE **table, ENGINE *e) { CRYPTO_w_lock(CRYPTO_LOCK_ENGINE); if(int_table_check(table, 0)) lh_doall_arg(&(*table)->piles, LHASH_DOALL_ARG_FN(int_unregister_cb), e); CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE); }
ENGINE * engine_table_select_tmp(ENGINE_TABLE **table, int nid, const char *f, int l) #endif { ENGINE *ret = NULL; ENGINE_PILE tmplate, *fnd = NULL; int initres, loop = 0; if (!(*table)) { #ifdef ENGINE_TABLE_DEBUG fprintf(stderr, "engine_table_dbg: %s:%d, nid=%d, nothing " "registered!\n", f, l, nid); #endif return NULL; } ERR_set_mark(); CRYPTO_w_lock(CRYPTO_LOCK_ENGINE); /* Check again inside the lock otherwise we could race against cleanup * operations. But don't worry about a fprintf(stderr). */ if (!int_table_check(table, 0)) goto end; tmplate.nid = nid; fnd = lh_ENGINE_PILE_retrieve(&(*table)->piles, &tmplate); if (!fnd) goto end; if (fnd->funct && engine_unlocked_init(fnd->funct)) { #ifdef ENGINE_TABLE_DEBUG fprintf(stderr, "engine_table_dbg: %s:%d, nid=%d, using " "ENGINE '%s' cached\n", f, l, nid, fnd->funct->id); #endif ret = fnd->funct; goto end; } if (fnd->uptodate) { ret = fnd->funct; goto end; } trynext: ret = sk_ENGINE_value(fnd->sk, loop++); if (!ret) { #ifdef ENGINE_TABLE_DEBUG fprintf(stderr, "engine_table_dbg: %s:%d, nid=%d, no " "registered implementations would initialise\n", f, l, nid); #endif goto end; } /* Try to initialise the ENGINE? */ if ((ret->funct_ref > 0) || !(table_flags & ENGINE_TABLE_FLAG_NOINIT)) initres = engine_unlocked_init(ret); else initres = 0; if (initres) { /* Update 'funct' */ if ((fnd->funct != ret) && engine_unlocked_init(ret)) { /* If there was a previous default we release it. */ if (fnd->funct) engine_unlocked_finish(fnd->funct, 0); fnd->funct = ret; #ifdef ENGINE_TABLE_DEBUG fprintf(stderr, "engine_table_dbg: %s:%d, nid=%d, " "setting default to '%s'\n", f, l, nid, ret->id); #endif } #ifdef ENGINE_TABLE_DEBUG fprintf(stderr, "engine_table_dbg: %s:%d, nid=%d, using " "newly initialised '%s'\n", f, l, nid, ret->id); #endif goto end; } goto trynext; end: /* If it failed, it is unlikely to succeed again until some future * registrations have taken place. In all cases, we cache. */ if (fnd) fnd->uptodate = 1; #ifdef ENGINE_TABLE_DEBUG if (ret) fprintf(stderr, "engine_table_dbg: %s:%d, nid=%d, caching " "ENGINE '%s'\n", f, l, nid, ret->id); else fprintf(stderr, "engine_table_dbg: %s:%d, nid=%d, caching " "'no matching ENGINE'\n", f, l, nid); #endif CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE); /* Whatever happened, any failed init()s are not failures in this * context, so clear our error state. */ ERR_pop_to_mark(); return ret; }