HTTPS test fixes and improvements:

always skip tests if libcurl do not support HTTPS (instead of failing)
return 99 in case of global errors (MHD-unrelated)
print error result if test if failed
fixed ignored result of epoll test in test_https_get_select
allow compilation by C89 compiler

12 files changed, 101 insertions, 50 deletions

diff --git a/src/testcurl/https/test_empty_response.c b/src/testcurl/https/test_empty_response.c
index 57e2d676..37061b65 100644
--- a/src/testcurl/https/test_empty_response.c
+++ b/src/testcurl/https/test_empty_response.c
@@ -201,10 +201,16 @@ main (int argc, char *const *argv)
   if (0 != curl_global_init (CURL_GLOBAL_ALL))
     {
       fprintf (stderr, "Error: %s\n", strerror (errno));
-      return -1;
+      return 99;
+    }
+  if (NULL == curl_version_info (CURLVERSION_NOW)->ssl_version)
+    {
+      fprintf (stderr, "Curl does not support SSL.  Cannot run the test.\n");
+      curl_global_cleanup ();
+      return 77;
     }
   if (0 != (errorCount = testInternalSelectGet ()))
-    fprintf (stderr, "Fail: %d\n", errorCount);
+    fprintf (stderr, "Failed test: %s, error: %u.\n", argv[0], errorCount);
   curl_global_cleanup ();
-  return errorCount != 0;
+  return errorCount != 0 ? 1 : 0;
 }
diff --git a/src/testcurl/https/test_https_get.c b/src/testcurl/https/test_https_get.c
index f8795b9b..0b82bf0f 100644
--- a/src/testcurl/https/test_https_get.c
+++ b/src/testcurl/https/test_https_get.c
@@ -109,7 +109,13 @@ main (int argc, char *const *argv)
   if (0 != curl_global_init (CURL_GLOBAL_ALL))
     {
       fprintf (stderr, "Error: %s\n", strerror (errno));
-      return -1;
+      return 99;
+    }
+  if (NULL == curl_version_info (CURLVERSION_NOW)->ssl_version)
+    {
+      fprintf (stderr, "Curl does not support SSL.  Cannot run the test.\n");
+      curl_global_cleanup ();
+      return 77;
     }
 
   if (curl_uses_nss_ssl() == 0)
@@ -126,5 +132,5 @@ main (int argc, char *const *argv)
 
   curl_global_cleanup ();
 
-  return errorCount != 0;
+  return errorCount != 0 ? 1 : 0;
 }
diff --git a/src/testcurl/https/test_https_get_parallel.c b/src/testcurl/https/test_https_get_parallel.c
index d9d6eefa..45c08d0c 100644
--- a/src/testcurl/https/test_https_get_parallel.c
+++ b/src/testcurl/https/test_https_get_parallel.c
@@ -142,11 +142,16 @@ main (int argc, char *const *argv)
   if (0 != curl_global_init (CURL_GLOBAL_ALL))
     {
       fprintf (stderr, "Error: %s\n", strerror (errno));
-      return -1;
+      return 99;
     }
 
+  if (NULL == curl_version_info (CURLVERSION_NOW)->ssl_version)
+    {
+      fprintf (stderr, "Curl does not support SSL.  Cannot run the test.\n");
+      return 77;
+    }
   if (curl_uses_nss_ssl() == 0)
-    aes256_sha = "rsa_aes_256_sha";    
+    aes256_sha = "rsa_aes_256_sha";
 #ifdef EPOLL_SUPPORT
   errorCount +=
     test_wrap ("single threaded daemon, single client, epoll", &test_single_client,
@@ -181,5 +186,7 @@ main (int argc, char *const *argv)
                srv_self_signed_cert_pem, MHD_OPTION_END);
 
   curl_global_cleanup ();
-  return errorCount != 0;
+  if (errorCount != 0)
+    fprintf (stderr, "Failed test: %s, error: %u.\n", argv[0], errorCount);
+  return errorCount != 0 ? 1 : 0;
 }
diff --git a/src/testcurl/https/test_https_get_parallel_threads.c b/src/testcurl/https/test_https_get_parallel_threads.c
index ef1ecf69..239559ac 100644
--- a/src/testcurl/https/test_https_get_parallel_threads.c
+++ b/src/testcurl/https/test_https_get_parallel_threads.c
@@ -144,21 +144,23 @@ main (int argc, char *const *argv)
   gcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0);
 #endif
   srand (iseed);
-  ssl_version = curl_version_info (CURLVERSION_NOW)->ssl_version;
-  if (NULL == ssl_version)
-  {
-    fprintf (stderr, "Curl does not support SSL.  Cannot run the test.\n");
-    return 0;
-  }
-  if (0 != strncmp (ssl_version, "GnuTLS", 6))
-  {
-    fprintf (stderr, "This test can be run only with libcurl-gnutls.\n");
-    return 0;
-  }
   if (0 != curl_global_init (CURL_GLOBAL_ALL))
     {
       fprintf (stderr, "Error: %s\n", strerror (errno));
-      return -1;
+      return 99;
+    }
+  ssl_version = curl_version_info (CURLVERSION_NOW)->ssl_version;
+  if (0 != strncmp (ssl_version, "GnuTLS", 6))
+    {
+      fprintf (stderr, "This test can be run only with libcurl-gnutls.\n");
+      curl_global_cleanup ();
+      return 77;
+    }
+  if (NULL == ssl_version)
+    {
+      fprintf (stderr, "Curl does not support SSL.  Cannot run the test.\n");
+      curl_global_cleanup ();
+      return 77;
     }
 
   char *aes256_sha = "AES256-SHA";
@@ -184,8 +186,8 @@ main (int argc, char *const *argv)
                srv_self_signed_cert_pem, MHD_OPTION_END);
 
   if (errorCount != 0)
-    fprintf (stderr, "Failed test: %s.\n", argv[0]);
+    fprintf (stderr, "Failed test: %s, error: %u.\n", argv[0], errorCount);
 
   curl_global_cleanup ();
-  return errorCount != 0;
+  return errorCount != 0 ? 1 : 0;
 }
diff --git a/src/testcurl/https/test_https_get_select.c b/src/testcurl/https/test_https_get_select.c
index a9ae7f62..56bed223 100644
--- a/src/testcurl/https/test_https_get_select.c
+++ b/src/testcurl/https/test_https_get_select.c
@@ -230,14 +230,21 @@ main (int argc, char *const *argv)
   if (0 != curl_global_init (CURL_GLOBAL_ALL))
     {
       fprintf (stderr, "Error: %s\n", strerror (errno));
-      return -1;
+      return 99;
     }
+  if (NULL == curl_version_info (CURLVERSION_NOW)->ssl_version)
+    {
+      fprintf (stderr, "Curl does not support SSL.  Cannot run the test.\n");
+      curl_global_cleanup ();
+      return 77;
+    }
+
 #ifdef EPOLL_SUPPORT
-  if (0 != (errorCount = testExternalGet (MHD_USE_EPOLL)))
-    fprintf (stderr, "Fail: %d\n", errorCount);
+  errorCount += testExternalGet (MHD_USE_EPOLL);
 #endif
-  if (0 != (errorCount = testExternalGet (0)))
-    fprintf (stderr, "Fail: %d\n", errorCount);
+  errorCount += testExternalGet (0);
   curl_global_cleanup ();
-  return errorCount != 0;
+  if (errorCount != 0)
+    fprintf (stderr, "Failed test: %s, error: %u.\n", argv[0], errorCount);
+  return errorCount != 0 ? 1 : 0;
 }
diff --git a/src/testcurl/https/test_https_multi_daemon.c b/src/testcurl/https/test_https_multi_daemon.c
index b7f541b6..fdd4b74e 100644
--- a/src/testcurl/https/test_https_multi_daemon.c
+++ b/src/testcurl/https/test_https_multi_daemon.c
@@ -96,6 +96,7 @@ main (int argc, char *const *argv)
 {
   unsigned int errorCount = 0;
   FILE *cert;
+  const char *aes256_sha = "AES256-SHA";
 
   gcry_control (GCRYCTL_ENABLE_QUICK_RANDOM, 0);
 #ifdef GCRYCTL_INITIALIZATION_FINISHED
@@ -105,20 +106,26 @@ main (int argc, char *const *argv)
     {
       fprintf (stderr, "Error (code: %u). l:%d f:%s\n", errorCount, __LINE__,
                __FUNCTION__);
-      return -1;
+      return 99;
+    }
+  if (NULL == curl_version_info (CURLVERSION_NOW)->ssl_version)
+    {
+      fprintf (stderr, "Curl does not support SSL.  Cannot run the test.\n");
+      curl_global_cleanup ();
+      return 77;
     }
   if ((cert = setup_ca_cert ()) == NULL)
     {
       fprintf (stderr, MHD_E_TEST_FILE_CREAT);
-      return -1;
+      curl_global_cleanup ();
+      return 99;
     }
 
-  const char *aes256_sha = "AES256-SHA";
   if (curl_uses_nss_ssl() == 0)
     {
       aes256_sha = "rsa_aes_256_sha";
     }
-  
+
   errorCount +=
     test_concurent_daemon_pair (NULL, aes256_sha, CURL_SSLVERSION_TLSv1);
 
@@ -130,5 +137,5 @@ main (int argc, char *const *argv)
     fprintf (stderr,
              "Failed to remove `%s'\n",
              ca_cert_file_name);
-  return errorCount != 0;
+  return errorCount != 0 ? 1 : 0;
 }
diff --git a/src/testcurl/https/test_https_session_info.c b/src/testcurl/https/test_https_session_info.c
index 62a01518..d4f2985e 100644
--- a/src/testcurl/https/test_https_session_info.c
+++ b/src/testcurl/https/test_https_session_info.c
@@ -180,18 +180,20 @@ main (int argc, char *const *argv)
   if (0 != curl_global_init (CURL_GLOBAL_ALL))
     {
       fprintf (stderr, "Error (code: %u)\n", errorCount);
-      return -1;
+      return 99;
     }
 
   ssl_version = curl_version_info (CURLVERSION_NOW)->ssl_version;
   if (NULL == ssl_version)
   {
     fprintf (stderr, "Curl does not support SSL.  Cannot run the test.\n");
+    curl_global_cleanup ();
     return 77;
   }
   if (0 != strncmp (ssl_version, "GnuTLS", 6))
   {
     fprintf (stderr, "This test can be run only with libcurl-gnutls.\n");
+    curl_global_cleanup ();
     return 77;
   }
 #if LIBCURL_VERSION_NUM >= 0x072200
@@ -199,7 +201,5 @@ main (int argc, char *const *argv)
 #endif
   print_test_result (errorCount, argv[0]);
   curl_global_cleanup ();
-  if (errorCount > 0)
-    fprintf (stderr, "Error (code: %u)\n", errorCount);
-  return errorCount;
+  return errorCount != 0 ? 1 : 0;
 }
diff --git a/src/testcurl/https/test_https_sni.c b/src/testcurl/https/test_https_sni.c
index 137c6a37..6603cace 100644
--- a/src/testcurl/https/test_https_sni.c
+++ b/src/testcurl/https/test_https_sni.c
@@ -256,8 +256,15 @@ main (int argc, char *const *argv)
   if (0 != curl_global_init (CURL_GLOBAL_ALL))
     {
       fprintf (stderr, "Error: %s\n", strerror (errno));
+      return 99;
+    }
+  if (NULL == curl_version_info (CURLVERSION_NOW)->ssl_version)
+    {
+      fprintf (stderr, "Curl does not support SSL.  Cannot run the test.\n");
+      curl_global_cleanup ();
       return 77;
     }
+
   load_keys ("host1", ABS_SRCDIR "/host1.crt", ABS_SRCDIR "/host1.key");
   load_keys ("host2", ABS_SRCDIR "/host2.crt", ABS_SRCDIR "/host2.key");
   d = MHD_start_daemon (MHD_USE_THREAD_PER_CONNECTION | MHD_USE_INTERNAL_POLLING_THREAD | MHD_USE_TLS | MHD_USE_ERROR_LOG,
@@ -278,6 +285,8 @@ main (int argc, char *const *argv)
 
   MHD_stop_daemon (d);
   curl_global_cleanup ();
+  if (error_count != 0)
+    fprintf (stderr, "Failed test: %s, error: %u.\n", argv[0], error_count);
   return (0 != error_count) ? 1 : 0;
 }
 
diff --git a/src/testcurl/https/test_https_time_out.c b/src/testcurl/https/test_https_time_out.c
index 3d76b2b6..de619206 100644
--- a/src/testcurl/https/test_https_time_out.c
+++ b/src/testcurl/https/test_https_time_out.c
@@ -143,5 +143,5 @@ main (int argc, char *const *argv)
   MHD_stop_daemon (d);
   gnutls_global_deinit ();
 
-  return errorCount != 0;
+  return errorCount != 0 ? 1 : 0;
 }
diff --git a/src/testcurl/https/test_tls_authentication.c b/src/testcurl/https/test_tls_authentication.c
index b5fe8f28..9f337a32 100644
--- a/src/testcurl/https/test_tls_authentication.c
+++ b/src/testcurl/https/test_tls_authentication.c
@@ -73,24 +73,31 @@ int
 main (int argc, char *const *argv)
 {
   unsigned int errorCount = 0;
+  char *aes256_sha = "AES256-SHA";
 
   gcry_control (GCRYCTL_ENABLE_QUICK_RANDOM, 0);
 #ifdef GCRYCTL_INITIALIZATION_FINISHED
   gcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0);
 #endif
-  if (setup_ca_cert () == NULL)
+  if (0 != curl_global_init (CURL_GLOBAL_ALL))
     {
-      fprintf (stderr, MHD_E_TEST_FILE_CREAT);
-      return -1;
+      fprintf (stderr, "Error (code: %u)\n", errorCount);
+      return 99;
+    }
+  if (NULL == curl_version_info (CURLVERSION_NOW)->ssl_version)
+    {
+      fprintf (stderr, "Curl does not support SSL.  Cannot run the test.\n");
+      curl_global_cleanup ();
+      return 77;
     }
 
-  if (0 != curl_global_init (CURL_GLOBAL_ALL))
+  if (setup_ca_cert () == NULL)
     {
-      fprintf (stderr, "Error (code: %u)\n", errorCount);
-      return -1;
+      fprintf (stderr, MHD_E_TEST_FILE_CREAT);
+      curl_global_cleanup ();
+      return 99;
     }
 
-  char *aes256_sha = "AES256-SHA";
   if (curl_uses_nss_ssl() == 0)
     {
       aes256_sha = "rsa_aes_256_sha";
@@ -106,5 +113,5 @@ main (int argc, char *const *argv)
     fprintf (stderr,
              "Failed to remove `%s'\n",
              ca_cert_file_name);
-  return errorCount != 0;
+  return errorCount != 0 ? 1 : 0;
 }
diff --git a/src/testcurl/https/test_tls_options.c b/src/testcurl/https/test_tls_options.c
index 3aa8dc0f..ff8d1137 100644
--- a/src/testcurl/https/test_tls_options.c
+++ b/src/testcurl/https/test_tls_options.c
@@ -109,7 +109,7 @@ main (int argc, char *const *argv)
   if (0 != curl_global_init (CURL_GLOBAL_ALL))
     {
       fprintf (stderr, "Error: %s\n", strerror (errno));
-      return 77;
+      return 99;
     }
 
   const char *aes128_sha = "AES128-SHA";
@@ -151,5 +151,5 @@ main (int argc, char *const *argv)
     }
   curl_global_cleanup ();
 
-  return errorCount != 0;
+  return errorCount != 0 ? 1 : 0;
 }
diff --git a/src/testcurl/https/tls_test_common.c b/src/testcurl/https/tls_test_common.c
index 728842e0..edbc785c 100644
--- a/src/testcurl/https/tls_test_common.c
+++ b/src/testcurl/https/tls_test_common.c
@@ -139,9 +139,9 @@ test_daemon_get (void *cls,
 void
 print_test_result (int test_outcome, char *test_name)
 {
-#if 0
   if (test_outcome != 0)
-    fprintf (stderr, "running test: %s [fail]\n", test_name);
+    fprintf (stderr, "running test: %s [fail: %u]\n", test_name, (unsigned int)test_outcome);
+#if 0
   else
     fprintf (stdout, "running test: %s [pass]\n", test_name);
 #endif