Provide versions of EVP_PKEY_CTX_{str,hex}2ctrl() for internal use.

ok beck jsing

2 files changed, 38 insertions, 2 deletions

diff --git a/src/lib/libcrypto/evp/evp_locl.h b/src/lib/libcrypto/evp/evp_locl.h
index c3d9a6a718..43e0ac333d 100644
--- a/src/lib/libcrypto/evp/evp_locl.h
+++ b/src/lib/libcrypto/evp/evp_locl.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: evp_locl.h,v 1.22 2022/01/14 08:38:05 tb Exp $ */
+/* $OpenBSD: evp_locl.h,v 1.23 2022/05/05 08:42:27 tb Exp $ */
 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
  * project 2000.
  */
@@ -505,6 +505,8 @@ struct evp_aead_ctx_st {
         void *aead_state;
 };
 
+int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str);
+int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex);
 int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md_name);
 
 __END_HIDDEN_DECLS
diff --git a/src/lib/libcrypto/evp/pmeth_lib.c b/src/lib/libcrypto/evp/pmeth_lib.c
index d265e2aced..ef28ba09d8 100644
--- a/src/lib/libcrypto/evp/pmeth_lib.c
+++ b/src/lib/libcrypto/evp/pmeth_lib.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: pmeth_lib.c,v 1.20 2022/01/10 12:10:26 tb Exp $ */
+/* $OpenBSD: pmeth_lib.c,v 1.21 2022/05/05 08:42:27 tb Exp $ */
 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
  * project 2006.
  */
@@ -56,6 +56,7 @@
  *
  */
 
+#include <limits.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -65,6 +66,7 @@
 #include <openssl/err.h>
 #include <openssl/evp.h>
 #include <openssl/objects.h>
+#include <openssl/x509v3.h>
 
 #ifndef OPENSSL_NO_ENGINE
 #include <openssl/engine.h>
@@ -395,6 +397,38 @@ EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx, const char *name, const char *value)
 }
 
 int
+EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
+{
+        size_t len;
+
+        if ((len = strlen(str)) > INT_MAX)
+                return -1;
+
+        return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
+}
+
+int
+EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hexstr)
+{
+        unsigned char *hex = NULL;
+        long length;
+        int ret = 0;
+
+        if ((hex = string_to_hex(hexstr, &length)) == NULL)
+                goto err;
+        if (length < 0 || length > INT_MAX) {
+                ret = -1;
+                goto err;
+        }
+
+        ret = ctx->pmeth->ctrl(ctx, cmd, length, hex);
+
+ err:
+        free(hex);
+        return ret;
+}
+
+int
 EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md_name)
 {
         const EVP_MD *md;