crypto/property/property_query.c

   1 /*
   2  * Copyright 2021 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 "internal/propertyerr.h"
  11 #include "internal/property.h"
  12 #include "property_local.h"
  13
  14 static int property_idx_cmp(const void *keyp, const void *compare)
  15 {
  16     OSSL_PROPERTY_IDX key = *(const OSSL_PROPERTY_IDX *)keyp;
  17     const OSSL_PROPERTY_DEFINITION *defn =
  18             (const OSSL_PROPERTY_DEFINITION *)compare;
  19
  20     return key - defn->name_idx;
  21 }
  22
  23 const OSSL_PROPERTY_DEFINITION *
  24 ossl_property_find_property(const OSSL_PROPERTY_LIST *list,
  25                             OSSL_LIB_CTX *libctx, const char *name)
  26 {
  27     OSSL_PROPERTY_IDX name_idx;
  28
  29     if (list == NULL || name == NULL
  30         || (name_idx = ossl_property_name(libctx, name, 0)) == 0)
  31         return NULL;
  32
  33     return ossl_bsearch(&name_idx, list->properties, list->num_properties,
  34                         sizeof(*list->properties), &property_idx_cmp, 0);
  35 }
  36
  37 OSSL_PROPERTY_TYPE ossl_property_get_type(const OSSL_PROPERTY_DEFINITION *prop)
  38 {
  39     return prop->type;
  40 }
  41
  42 const char *ossl_property_get_string_value(OSSL_LIB_CTX *libctx,
  43                                            const OSSL_PROPERTY_DEFINITION *prop)
  44 {
  45     const char *value = NULL;
  46
  47     if (prop != NULL && prop->type == OSSL_PROPERTY_TYPE_STRING)
  48         value = ossl_property_value_str(libctx, prop->v.str_val);
  49     return value;
  50 }
  51
  52 int64_t ossl_property_get_number_value(const OSSL_PROPERTY_DEFINITION *prop)
  53 {
  54     int64_t value = 0;
  55
  56     if (prop != NULL && prop->type == OSSL_PROPERTY_TYPE_NUMBER)
  57         value = prop->v.int_val;
  58     return value;
  59 }
  60
  61 /* Does a property query have any optional clauses */
  62 int ossl_property_has_optional(const OSSL_PROPERTY_LIST *query)
  63 {
  64     return query->has_optional ? 1 : 0;
  65 }
  66
  67 int ossl_property_is_enabled(OSSL_LIB_CTX *ctx,  const char *property_name,
  68                              const OSSL_PROPERTY_LIST *prop_list)
  69 {
  70     const OSSL_PROPERTY_DEFINITION *prop;
  71
  72     prop = ossl_property_find_property(prop_list, ctx, property_name);
  73     /* Do a separate check for override as it does not set type */
  74     if (prop == NULL || prop->optional || prop->oper == OSSL_PROPERTY_OVERRIDE)
  75         return 0;
  76     return (prop->type == OSSL_PROPERTY_TYPE_STRING
  77             && ((prop->oper == OSSL_PROPERTY_OPER_EQ
  78                      && prop->v.str_val == OSSL_PROPERTY_TRUE)
  79                  || (prop->oper == OSSL_PROPERTY_OPER_NE
  80                      && prop->v.str_val != OSSL_PROPERTY_TRUE)));
  81 }
  82