decode_pem2der: convert to use generated parameter parsing

Reviewed-by: Paul Yang <paulyang.inf@gmail.com>
Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/28152)

diff --git a/providers/implementations/encode_decode/decode_pem2der.c.in b/providers/implementations/encode_decode/decode_pem2der.c.in
index b60309d073e1b06c5485c644acca054c1922f6af..8bb94525ab2536b07161a0ff7f71a6e138f3e8e9 100644 (file)
--- a/providers/implementations/encode_decode/decode_pem2der.c.in
+++ b/providers/implementations/encode_decode/decode_pem2der.c.in
@@ -6,6 +6,9 @@
  * in the file LICENSE in the source distribution or at
  * https://www.openssl.org/source/license.html
  */
+{-
+use OpenSSL::paramnames qw(produce_param_decoder);
+-}
 
 /*
  * RSA low level APIs are deprecated for public use, but still ok for
@@ -23,6 +26,7 @@
 #include <openssl/params.h>
 #include <openssl/pem.h>
 #include <openssl/proverr.h>
+#include "internal/cryptlib.h"
 #include "internal/nelem.h"
 #include "internal/sizes.h"
 #include "prov/bio.h"
@@ -74,32 +78,33 @@ static void pem2der_freectx(void *vctx)
     OPENSSL_free(ctx);
 }
 
+{- produce_param_decoder('pem2der_set_ctx_params',
+                         (['DECODER_PARAM_PROPERTIES',    'propq', 'utf8_string'],
+                          ['OBJECT_PARAM_DATA_STRUCTURE', 'ds',    'utf8_string'],
+                         )); -}
+
 static const OSSL_PARAM *pem2der_settable_ctx_params(ossl_unused void *provctx)
 {
-    static const OSSL_PARAM settables[] = {
-        OSSL_PARAM_utf8_string(OSSL_DECODER_PARAM_PROPERTIES, NULL, 0),
-        OSSL_PARAM_utf8_string(OSSL_OBJECT_PARAM_DATA_STRUCTURE, NULL, 0),
-        OSSL_PARAM_END
-    };
-    return settables;
+    return pem2der_set_ctx_params_list;
 }
 
 static int pem2der_set_ctx_params(void *vctx, const OSSL_PARAM params[])
 {
     struct pem2der_ctx_st *ctx = vctx;
-    const OSSL_PARAM *p;
+    struct pem2der_set_ctx_params_st p;
     char *str;
 
-    p = OSSL_PARAM_locate_const(params, OSSL_DECODER_PARAM_PROPERTIES);
+    if (ctx == NULL || !pem2der_set_ctx_params_decoder(params, &p))
+        return 0;
+
     str = ctx->propq;
-    if (p != NULL
-        && !OSSL_PARAM_get_utf8_string(p, &str, sizeof(ctx->propq)))
+    if (p.propq != NULL
+        && !OSSL_PARAM_get_utf8_string(p.propq, &str, sizeof(ctx->propq)))
         return 0;
 
-    p = OSSL_PARAM_locate_const(params, OSSL_OBJECT_PARAM_DATA_STRUCTURE);
     str = ctx->data_structure;
-    if (p != NULL
-        && !OSSL_PARAM_get_utf8_string(p, &str, sizeof(ctx->data_structure)))
+    if (p.ds != NULL
+        && !OSSL_PARAM_get_utf8_string(p.ds, &str, sizeof(ctx->data_structure)))
         return 0;
 
     return 1;