Add test for ignoring unknown sigalgs and groups marked with ?

Reviewed-by: Nicola Tuveri <nic.tuv@gmail.com>
Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
(Merged from #23050)

test/sslapitest.c

@@ -39,6 +39,7 @@
 #include "testutil.h"
 #include "testutil/output.h"
 #include "internal/nelem.h"
+#include "internal/tlsgroups.h"
 #include "internal/ktls.h"
 #include "../ssl/ssl_local.h"
 #include "../ssl/record/methods/recmethod_local.h"
@@ -3147,6 +3148,7 @@ static const sigalgs_list testsigalgs[] = {
     {validlist3, OSSL_NELEM(validlist3), NULL, 1, 0},
 # endif
     {NULL, 0, "RSA+SHA256", 1, 1},
+    {NULL, 0, "RSA+SHA256:?Invalid", 1, 1},
 # ifndef OPENSSL_NO_EC
     {NULL, 0, "RSA+SHA256:ECDSA+SHA512", 1, 1},
     {NULL, 0, "ECDSA+SHA512", 1, 0},
@@ -9486,6 +9488,64 @@ static int test_servername(int tst)
     return testresult;
 }
 
+static int test_unknown_sigalgs_groups(void)
+{
+    int ret = 0;
+    SSL_CTX *ctx = NULL;
+
+    if (!TEST_ptr(ctx = SSL_CTX_new_ex(libctx, NULL, TLS_server_method())))
+        goto end;
+
+    if (!TEST_int_gt(SSL_CTX_set1_sigalgs_list(ctx,
+                                               "RSA+SHA256:?nonexistent:?RSA+SHA512"),
+                                               0))
+        goto end;
+    if (!TEST_size_t_eq(ctx->cert->conf_sigalgslen, 2)
+        || !TEST_int_eq(ctx->cert->conf_sigalgs[0], TLSEXT_SIGALG_rsa_pkcs1_sha256)
+        || !TEST_int_eq(ctx->cert->conf_sigalgs[1], TLSEXT_SIGALG_rsa_pkcs1_sha512))
+        goto end;
+
+    if (!TEST_int_gt(SSL_CTX_set1_client_sigalgs_list(ctx,
+                                                      "RSA+SHA256:?nonexistent:?RSA+SHA512"),
+                                                      0))
+        goto end;
+    if (!TEST_size_t_eq(ctx->cert->client_sigalgslen, 2)
+        || !TEST_int_eq(ctx->cert->client_sigalgs[0], TLSEXT_SIGALG_rsa_pkcs1_sha256)
+        || !TEST_int_eq(ctx->cert->client_sigalgs[1], TLSEXT_SIGALG_rsa_pkcs1_sha512))
+        goto end;
+
+    if (!TEST_int_le(SSL_CTX_set1_groups_list(ctx,
+                                              "nonexistent"),
+                                              0))
+        goto end;
+
+    if (!TEST_int_le(SSL_CTX_set1_groups_list(ctx,
+                                              "?nonexistent1:?nonexistent2:?nonexistent3"),
+                                              0))
+        goto end;
+
+#ifndef OPENSSL_NO_EC
+    if (!TEST_int_le(SSL_CTX_set1_groups_list(ctx,
+                                              "P-256:nonexistent"),
+                                              0))
+        goto end;
+
+    if (!TEST_int_gt(SSL_CTX_set1_groups_list(ctx,
+                                              "P-384:?nonexistent:?P-521"),
+                                              0))
+        goto end;
+    if (!TEST_size_t_eq(ctx->ext.supportedgroups_len, 2)
+        || !TEST_int_eq(ctx->ext.supportedgroups[0], OSSL_TLS_GROUP_ID_secp384r1)
+        || !TEST_int_eq(ctx->ext.supportedgroups[1], OSSL_TLS_GROUP_ID_secp521r1))
+        goto end;
+#endif
+
+    ret = 1;
+ end:
+    SSL_CTX_free(ctx);
+    return ret;
+}
+
 #if !defined(OPENSSL_NO_EC) \
     && (!defined(OSSL_NO_USABLE_TLS1_3) || !defined(OPENSSL_NO_TLS1_2))
 /*
@@ -11725,6 +11785,7 @@ int setup_tests(void)
     ADD_ALL_TESTS(test_multiblock_write, OSSL_NELEM(multiblock_cipherlist_data));
 #endif
     ADD_ALL_TESTS(test_servername, 10);
+    ADD_TEST(test_unknown_sigalgs_groups);
 #if !defined(OPENSSL_NO_EC) \
     && (!defined(OSSL_NO_USABLE_TLS1_3) || !defined(OPENSSL_NO_TLS1_2))
     ADD_ALL_TESTS(test_sigalgs_available, 6);