xref: /openssl/crypto/property/property_query.c (revision 6de9214a)
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 
property_idx_cmp(const void * keyp,const void * compare)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 *
ossl_property_find_property(const OSSL_PROPERTY_LIST * list,OSSL_LIB_CTX * libctx,const char * name)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 
ossl_property_get_type(const OSSL_PROPERTY_DEFINITION * prop)37 OSSL_PROPERTY_TYPE ossl_property_get_type(const OSSL_PROPERTY_DEFINITION *prop)
38 {
39     return prop->type;
40 }
41 
ossl_property_get_string_value(OSSL_LIB_CTX * libctx,const OSSL_PROPERTY_DEFINITION * prop)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 
ossl_property_get_number_value(const OSSL_PROPERTY_DEFINITION * prop)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 */
ossl_property_has_optional(const OSSL_PROPERTY_LIST * query)62 int ossl_property_has_optional(const OSSL_PROPERTY_LIST *query)
63 {
64     return query->has_optional ? 1 : 0;
65 }
66 
ossl_property_is_enabled(OSSL_LIB_CTX * ctx,const char * property_name,const OSSL_PROPERTY_LIST * prop_list)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 
83