apps/list.c: Check the result of inserting a provider into provider's stack

Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/22492)

(cherry picked from commit 15b83e04a5e125ab873ace1e474790a4a5b44647)

diff --git a/apps/list.c b/apps/list.c
index 7cbef787196440760cf2a477525d3784ae53b42d..8649598df7fcb327a44698b1319c102b125861fc 100644 (file)
--- a/apps/list.c
+++ b/apps/list.c
@@ -1209,9 +1209,11 @@ static int provider_cmp(const OSSL_PROVIDER * const *a,
 static int collect_providers(OSSL_PROVIDER *provider, void *stack)
 {
     STACK_OF(OSSL_PROVIDER) *provider_stack = stack;
-
-    sk_OSSL_PROVIDER_push(provider_stack, provider);
-    return 1;
+    /*
+     * If OK - result is the index of inserted data
+     * Error - result is -1 or 0
+     */
+    return sk_OSSL_PROVIDER_push(provider_stack, provider) > 0 ? 1 : 0;
 }
 
 static void list_provider_info(void)
@@ -1226,8 +1228,13 @@ static void list_provider_info(void)
         BIO_printf(bio_err, "ERROR: Memory allocation\n");
         return;
     }
+
+    if (OSSL_PROVIDER_do_all(NULL, &collect_providers, providers) != 1) {
+        BIO_printf(bio_err, "ERROR: Memory allocation\n");
+        return;
+    }
+
     BIO_printf(bio_out, "Providers:\n");
-    OSSL_PROVIDER_do_all(NULL, &collect_providers, providers);
     sk_OSSL_PROVIDER_sort(providers);
     for (i = 0; i < sk_OSSL_PROVIDER_num(providers); i++) {
         const OSSL_PROVIDER *prov = sk_OSSL_PROVIDER_value(providers, i);