property: Add functionality to query data from a property definition

This required making some OSSL_PROPERTY types a little less private.

Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/15570)

1 files changed, 21 insertions, 0 deletions

diff --git a/crypto/property/property_local.h b/crypto/property/property_local.h
index 8cc3a51270..db1b0a5ee4 100644
--- a/crypto/property/property_local.h
+++ b/crypto/property/property_local.h
@@ -13,6 +13,27 @@
 
 typedef int OSSL_PROPERTY_IDX;
 
+typedef enum {
+    OSSL_PROPERTY_OPER_EQ, OSSL_PROPERTY_OPER_NE, OSSL_PROPERTY_OVERRIDE
+} OSSL_PROPERTY_OPER;
+
+struct ossl_property_definition_st {
+    OSSL_PROPERTY_IDX name_idx;
+    OSSL_PROPERTY_TYPE type;
+    OSSL_PROPERTY_OPER oper;
+    unsigned int optional : 1;
+    union {
+        int64_t             int_val;     /* Signed integer */
+        OSSL_PROPERTY_IDX   str_val;     /* String */
+    } v;
+};
+
+struct ossl_property_list_st {
+    int n;
+    unsigned int has_optional : 1;
+    OSSL_PROPERTY_DEFINITION properties[1];
+};
+
 /* Property string functions */
 OSSL_PROPERTY_IDX ossl_property_name(OSSL_LIB_CTX *ctx, const char *s,
                                      int create);