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      1 /*
      2  * Copyright 2024 The OpenSSL Project Authors. All Rights Reserved.
      3  *
      4  * Licensed under the Apache License 2.0 (the "License").  You may not use
      5  * this file except in compliance with the License.  You can obtain a copy
      6  * in the file LICENSE in the source distribution or at
      7  * https://www.openssl.org/source/license.html
      8  */
      9 
     10 #include <openssl/indicator.h>
     11 #include <openssl/core_names.h>
     12 #include <openssl/params.h>
     13 #include "internal/cryptlib.h"
     14 #include "crypto/context.h"
     15 
     16 typedef struct indicator_cb_st {
     17     OSSL_INDICATOR_CALLBACK *cb;
     18 } INDICATOR_CB;
     19 
     20 void *ossl_indicator_set_callback_new(OSSL_LIB_CTX *ctx)
     21 {
     22     INDICATOR_CB *cb;
     23 
     24     cb = OPENSSL_zalloc(sizeof(*cb));
     25     return cb;
     26 }
     27 
     28 void ossl_indicator_set_callback_free(void *cb)
     29 {
     30     OPENSSL_free(cb);
     31 }
     32 
     33 static INDICATOR_CB *get_indicator_callback(OSSL_LIB_CTX *libctx)
     34 {
     35     return ossl_lib_ctx_get_data(libctx, OSSL_LIB_CTX_INDICATOR_CB_INDEX);
     36 }
     37 
     38 void OSSL_INDICATOR_set_callback(OSSL_LIB_CTX *libctx,
     39     OSSL_INDICATOR_CALLBACK *cb)
     40 {
     41     INDICATOR_CB *icb = get_indicator_callback(libctx);
     42 
     43     if (icb != NULL)
     44         icb->cb = cb;
     45 }
     46 
     47 void OSSL_INDICATOR_get_callback(OSSL_LIB_CTX *libctx,
     48     OSSL_INDICATOR_CALLBACK **cb)
     49 {
     50     INDICATOR_CB *icb = get_indicator_callback(libctx);
     51 
     52     if (cb != NULL)
     53         *cb = (icb != NULL ? icb->cb : NULL);
     54 }
     55