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, 15 insertions, 0 deletions

diff --git a/include/internal/property.h b/include/internal/property.h
index 856cd740ad..bcea21d80c 100644
--- a/include/internal/property.h
+++ b/include/internal/property.h
@@ -17,6 +17,12 @@
 typedef struct ossl_method_store_st OSSL_METHOD_STORE;
 typedef struct ossl_property_list_st OSSL_PROPERTY_LIST;
 
+typedef enum {
+    OSSL_PROPERTY_TYPE_STRING, OSSL_PROPERTY_TYPE_NUMBER,
+    OSSL_PROPERTY_TYPE_VALUE_UNDEFINED
+} OSSL_PROPERTY_TYPE;
+typedef struct ossl_property_definition_st OSSL_PROPERTY_DEFINITION;
+
 /* Initialisation */
 int ossl_property_parse_init(OSSL_LIB_CTX *ctx);
 
@@ -33,6 +39,15 @@ int ossl_property_is_enabled(OSSL_LIB_CTX *ctx,  const char *property_name,
 /* Free a parsed property list */
 void ossl_property_free(OSSL_PROPERTY_LIST *p);
 
+/* Get a property from a property list */
+const OSSL_PROPERTY_DEFINITION *
+ossl_property_find_property(const OSSL_PROPERTY_LIST *list,
+                            OSSL_LIB_CTX *libctx, const char *name);
+OSSL_PROPERTY_TYPE ossl_property_get_type(const OSSL_PROPERTY_DEFINITION *prop);
+const char *ossl_property_get_string_value(OSSL_LIB_CTX *libctx,
+                                           const OSSL_PROPERTY_DEFINITION *prop);
+int64_t ossl_property_get_number_value(const OSSL_PROPERTY_DEFINITION *prop);
+
 
 /* Implementation store functions */
 OSSL_METHOD_STORE *ossl_method_store_new(OSSL_LIB_CTX *ctx);