From 74589b3ff606be1054ee7ec0cd40006469fc5d20 Mon Sep 17 00:00:00 2001
From: Nikos Mavrogiannopoulos <nmav@redhat.com>
Date: Fri, 10 Mar 2017 17:04:20 +0100
Subject: tests: introduced check for parallel operation (signatures) in
 PKCS#11 mode

That is, verify that parallel signatures using a single gnutls_pkcs11_privkey_t
context work.

Signed-off-by: Nikos Mavrogiannopoulos <nmav@redhat.com>
---
 tests/Makefile.am                     |   5 +-
 tests/pkcs11/pkcs11-privkey-pthread.c | 195 ++++++++++++++++++++++++++++++++++
 2 files changed, 199 insertions(+), 1 deletion(-)
 create mode 100644 tests/pkcs11/pkcs11-privkey-pthread.c

diff --git a/tests/Makefile.am b/tests/Makefile.am
index 0b7d3b575c..b50bb1331d 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -200,11 +200,14 @@ pkcs11_privkey_always_auth_SOURCES = pkcs11/pkcs11-privkey-always-auth.c
 pkcs11_privkey_always_auth_DEPENDENCIES = libpkcs11mock1.la libutils.la
 pkcs11_privkey_always_auth_LDADD = $(LDADD) $(LIBDL)
 
+pkcs11_pkcs11_privkey_pthread_LDADD = $(LDADD) -lpthread
+
 ctests += pkcs11-cert-import-url-exts pkcs11-get-exts pkcs11-get-raw-issuer-exts \
 	pkcs11-cert-import-url4-exts pkcs11/pkcs11-chainverify pkcs11/pkcs11-get-issuer pkcs11/pkcs11-is-known \
 	pkcs11/pkcs11-combo pkcs11/pkcs11-privkey pkcs11/pkcs11-pubkey-import-rsa pkcs11/pkcs11-pubkey-import-ecdsa \
 	pkcs11-import-url-privkey pkcs11-privkey-fork pkcs11/pkcs11-ec-privkey-test \
-	pkcs11-privkey-always-auth pkcs11-privkey-export pkcs11/pkcs11-import-with-pin
+	pkcs11-privkey-always-auth pkcs11-privkey-export pkcs11/pkcs11-import-with-pin \
+	pkcs11/pkcs11-privkey-pthread
 
 
 endif
diff --git a/tests/pkcs11/pkcs11-privkey-pthread.c b/tests/pkcs11/pkcs11-privkey-pthread.c
new file mode 100644
index 0000000000..dfccbaff9c
--- /dev/null
+++ b/tests/pkcs11/pkcs11-privkey-pthread.c
@@ -0,0 +1,195 @@
+/*
+ * Copyright (C) 2017 Red Hat, Inc.
+ *
+ * Author: Nikos Mavrogiannopoulos
+ *
+ * This file is part of GnuTLS.
+ *
+ * GnuTLS is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuTLS is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GnuTLS; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <errno.h>
+#include <gnutls/gnutls.h>
+#include <gnutls/abstract.h>
+#include <gnutls/crypto.h>
+#include <signal.h>
+#include <unistd.h>
+#include <assert.h>
+#ifndef _WIN32
+# include <netinet/in.h>
+# include <sys/types.h>
+# include <sys/socket.h>
+# include <sys/wait.h>
+# include <pthread.h>
+#endif
+#include "utils.h"
+
+#if !defined(HAVE___REGISTER_ATFORK)
+
+void doit(void)
+{
+	exit(77);
+}
+
+#else
+
+#ifdef _WIN32
+# define P11LIB "libpkcs11mock1.dll"
+#else
+# include <dlfcn.h>
+# define P11LIB "libpkcs11mock1.so"
+#endif
+
+/* Tests whether we can use gnutls_privkey_sign() under mutliple threads
+ * with the same key when PKCS#11 is in use.
+ */
+
+#include "../cert-common.h"
+
+#define PIN "1234"
+
+static const gnutls_datum_t testdata = {(void*)"test test", 9};
+
+static void tls_log_func(int level, const char *str)
+{
+	fprintf(stderr, "|<%d>| %s", level, str);
+}
+
+static
+int pin_func(void* userdata, int attempt, const char* url, const char *label,
+		unsigned flags, char *pin, size_t pin_max)
+{
+	if (attempt == 0) {
+		strcpy(pin, PIN);
+		return 0;
+	}
+	return -1;
+}
+
+typedef struct thread_data_st {
+	gnutls_privkey_t pkey;
+	pthread_t id;
+} thread_data_st;
+
+static void *start_thread(void *arg)
+{
+	thread_data_st *data = arg;
+	int ret;
+	gnutls_datum_t sig;
+
+	ret = gnutls_privkey_sign_data(data->pkey, GNUTLS_DIG_SHA256, 0, &testdata, &sig);
+	if (ret < 0)
+		pthread_exit((void*)-2);
+
+	gnutls_free(sig.data);
+
+	pthread_exit(0);
+}
+
+#define MAX_THREADS 48
+
+static
+void do_thread_stuff(gnutls_privkey_t pkey)
+{
+	int ret;
+	thread_data_st *data;
+	unsigned i;
+	void *retval;
+
+	data = calloc(1, sizeof(thread_data_st)*MAX_THREADS);
+	if (data == NULL)
+		abort();
+
+	for (i=0;i<MAX_THREADS;i++) {
+		data[i].pkey = pkey;
+		ret = pthread_create(&data[i].id, NULL, start_thread, &data[i]);
+		if (ret != 0) {
+			fail("Error creating thread\n");
+		}
+	}
+
+	for (i=0;i<MAX_THREADS;i++) {
+		ret = pthread_join(data[i].id, &retval);
+		if (ret != 0 || retval != NULL) {
+			fail("Error in %d: %p\n", (int)data[i].id, retval);
+		}
+	}
+	free(data);
+
+}
+
+void doit(void)
+{
+	int ret, status;
+	const char *lib;
+	gnutls_privkey_t pkey;
+	pid_t pid;
+
+	signal(SIGPIPE, SIG_IGN);
+
+	gnutls_pkcs11_set_pin_function(pin_func, NULL);
+	gnutls_global_set_log_function(tls_log_func);
+	if (debug)
+		gnutls_global_set_log_level(4711);
+
+	lib = getenv("P11MOCKLIB1");
+	if (lib == NULL)
+		lib = P11LIB;
+
+	ret = gnutls_pkcs11_init(GNUTLS_PKCS11_FLAG_MANUAL, NULL);
+	if (ret != 0) {
+		fail("%d: %s\n", ret, gnutls_strerror(ret));
+		exit(1);
+	}
+
+	ret = gnutls_pkcs11_add_provider(lib, NULL);
+	if (ret != 0) {
+		fail("%d: %s\n", ret, gnutls_strerror(ret));
+		exit(1);
+	}
+
+	assert(gnutls_privkey_init(&pkey) == 0);
+
+	ret = gnutls_privkey_import_url(pkey, "pkcs11:object=test", GNUTLS_PKCS11_OBJ_FLAG_LOGIN);
+	if (ret < 0) {
+		fprintf(stderr, "error in %d: %s\n", __LINE__, gnutls_strerror(ret));
+		exit(1);
+	}
+
+	/* fork to force PKCS#11 reinitialization */
+	pid = fork();
+	if (pid == -1) {
+		exit(1);
+	} else if (pid) {
+                waitpid(pid, &status, 0);
+                check_wait_status(status);
+                goto cleanup;
+	}
+
+	do_thread_stuff(pkey);
+
+ cleanup:
+	gnutls_privkey_deinit(pkey);
+}
+
+#endif
-- 
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