Add the STORE module

This STORE module adds the following functionality:

- A function OSSL_STORE_open(), OSSL_STORE_load() and OSSL_STORE_close()
  that accesses a URI and helps loading the supported objects (PKEYs,
  CERTs and CRLs for the moment) from it.
- An opaque type OSSL_STORE_INFO that holds information on each loaded
  object.
- A few functions to retrieve desired data from a OSSL_STORE_INFO
  reference.
- Functions to register and unregister loaders for different URI
  schemes.  This enables dynamic addition of loaders from applications
  or from engines.

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3542)

1 files changed, 28 insertions, 0 deletions

diff --git a/crypto/store/store_strings.c b/crypto/store/store_strings.c
new file mode 100644
index 0000000000..76cf316483
--- /dev/null
+++ b/crypto/store/store_strings.c
@@ -0,0 +1,28 @@
+/*
+ * Copyright 2016-2017 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include <openssl/store.h>
+
+static char *type_strings[] = {
+    "Name",                      /* OSSL_STORE_INFO_NAME */
+    "Parameters",                /* OSSL_STORE_INFO_PARAMS */
+    "Pkey",                      /* OSSL_STORE_INFO_PKEY */
+    "Certificate",               /* OSSL_STORE_INFO_CERT */
+    "CRL"                        /* OSSL_STORE_INFO_CRL */
+};
+
+const char *OSSL_STORE_INFO_type_string(int type)
+{
+    int types = sizeof(type_strings) / sizeof(type_strings[0]);
+
+    if (type < 1 || type > types)
+        return NULL;
+
+    return type_strings[type - 1];
+}