Use centralized fetching errors

We've spread around FETCH_FAILED errors in quite a few places, and
that gives somewhat crude error records, as there's no way to tell if
the error was unavailable algorithms or some other error at such high
levels.

As an alternative, we take recording of these kinds of errors down to
the fetching functions, which are in a much better place to tell what
kind of error it was, thereby relieving the higher level calls from
having to guess.

Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/13467)

1 files changed, 13 insertions, 0 deletions

diff --git a/crypto/context.c b/crypto/context.c
index 4dbfb723e1..c351ff9619 100644
--- a/crypto/context.c
+++ b/crypto/context.c
@@ -368,3 +368,16 @@ int ossl_lib_ctx_onfree(OSSL_LIB_CTX *ctx, ossl_lib_ctx_onfree_fn onfreefn)
 
     return 1;
 }
+
+const char *ossl_lib_ctx_get_descriptor(OSSL_LIB_CTX *libctx)
+{
+#ifdef FIPS_MODULE
+    return "FIPS internal library context";
+#else
+    if (ossl_lib_ctx_is_global_default(libctx))
+        return "Global default library context";
+    if (ossl_lib_ctx_is_default(libctx))
+        return "Thread-local default library context";
+    return "Non-default library context";
+#endif
+}