Params: add argument to the _from_text calls to indicate if the param exists.

The extra argument is a integer pointer and is optional.

Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/11049)

1 files changed, 5 insertions, 3 deletions

diff --git a/crypto/params_from_text.c b/crypto/params_from_text.c
index 59cee5f115..71fa8aef92 100644
--- a/crypto/params_from_text.c
+++ b/crypto/params_from_text.c
@@ -24,7 +24,7 @@ static int prepare_from_text(const OSSL_PARAM *paramdefs, const char *key,
                              const char *value, size_t value_n,
                              /* Output parameters */
                              const OSSL_PARAM **paramdef, int *ishex,
-                             size_t *buf_n, BIGNUM **tmpbn)
+                             size_t *buf_n, BIGNUM **tmpbn, int *found)
 {
     const OSSL_PARAM *p;
 
@@ -38,6 +38,8 @@ static int prepare_from_text(const OSSL_PARAM *paramdefs, const char *key,
         key += 3;
 
     p = *paramdef = OSSL_PARAM_locate_const(paramdefs, key);
+    if (found != NULL)
+        *found = p != NULL;
     if (p == NULL)
         return 0;
 
@@ -163,7 +165,7 @@ static int construct_from_text(OSSL_PARAM *to, const OSSL_PARAM *paramdef,
 int OSSL_PARAM_allocate_from_text(OSSL_PARAM *to,
                                   const OSSL_PARAM *paramdefs,
                                   const char *key, const char *value,
-                                  size_t value_n)
+                                  size_t value_n, int *found)
 {
     const OSSL_PARAM *paramdef = NULL;
     int ishex = 0;
@@ -176,7 +178,7 @@ int OSSL_PARAM_allocate_from_text(OSSL_PARAM *to,
         return 0;
 
     if (!prepare_from_text(paramdefs, key, value, value_n,
-                           &paramdef, &ishex, &buf_n, &tmpbn))
+                           &paramdef, &ishex, &buf_n, &tmpbn, found))
         return 0;
 
     if ((buf = OPENSSL_zalloc(buf_n > 0 ? buf_n : 1)) == NULL) {