tests: added check to verify that keylog file is being written

2 files changed, 121 insertions, 1 deletions

diff --git a/tests/Makefile.am b/tests/Makefile.am
index fb10ecd105..9c94596fce 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -106,7 +106,8 @@ ctests = mini-record-2 simple gc set_pkcs12_cred certder certuniqueid	\
 	 rehandshake-switch-srp-id base64 srpbase64 pkcs1-digest-info set_x509_key \
 	 set_x509_key_file_der set_x509_pkcs12_key crt_apis tls1.2-cert-key-exchange \
 	 tls1.1-cert-key-exchange tls1.0-cert-key-exchange ssl3.0-cert-key-exchange \
-	 dtls1.2-cert-key-exchange dtls1.0-cert-key-exchange x509-cert-callback-legacy
+	 dtls1.2-cert-key-exchange dtls1.0-cert-key-exchange x509-cert-callback-legacy \
+	 keylog-env
 
 if HAVE_SECCOMP_TESTS
 ctests += dtls-with-seccomp tls-with-seccomp dtls-client-with-seccomp tls-client-with-seccomp
diff --git a/tests/keylog-env.c b/tests/keylog-env.c
new file mode 100644
index 0000000000..4556c58491
--- /dev/null
+++ b/tests/keylog-env.c
@@ -0,0 +1,119 @@
+/*
+ * Copyright (C) 2016 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
+ */
+
+/* Parts copied from GnuTLS example programs. */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#if !defined(_WIN32)
+#include <netinet/in.h>
+#include <sys/socket.h>
+#include <sys/wait.h>
+#include <arpa/inet.h>
+#endif
+#include <fcntl.h>
+#include <unistd.h>
+#include <assert.h>
+#include <gnutls/gnutls.h>
+#include <gnutls/x509.h>
+
+#include "utils.h"
+#include "cert-common.h"
+
+/* Test for GNUTLS_KEYLOGFILE being functional.
+ *
+ */
+
+static void tls_log_func(int level, const char *str)
+{
+	fprintf(stderr, "<%d>| %s", level, str);
+}
+
+#define LSTR "CLIENT_RANDOM "
+static void search_for_str(const char *filename)
+{
+	char line[512];
+	FILE *fp = fopen(filename, "r");
+	char *p;
+
+	while( (p = fgets(line, sizeof(line), fp)) != NULL) {
+		success("%s", line);
+		if (strncmp(line, LSTR, sizeof(LSTR)-1) == 0) {
+			fclose(fp);
+			return;
+		}
+	}
+	fclose(fp);
+	fail("file did not contain CLIENT_RANDOM\n");
+}
+
+void doit(void)
+{
+	gnutls_certificate_credentials_t x509_cred;
+	int ret;
+	char filename[TMPNAME_SIZE];
+
+	/* this must be called once in the program
+	 */
+	global_init();
+
+	assert(get_tmpname(filename)!=NULL);
+	remove(filename);
+
+	if (debug) {
+		gnutls_global_set_log_level(6);
+		gnutls_global_set_log_function(tls_log_func);
+	}
+
+	/* test gnutls_certificate_flags() */
+	assert(gnutls_certificate_allocate_credentials(&x509_cred)>=0);
+
+	ret = gnutls_certificate_set_x509_key_mem(x509_cred, &server_ca3_localhost_cert,
+					    &server_ca3_key,
+					    GNUTLS_X509_FMT_PEM);
+	if (ret < 0) {
+		fail("error in error code\n");
+		exit(1);
+	}
+
+	setenv("GNUTLS_KEYLOGFILE", filename, 1);
+	test_cli_serv(x509_cred, "NORMAL", &ca3_cert, "localhost");
+
+	if (access(filename, R_OK) != 0) {
+		fail("keylog file was not created\n");
+		exit(1);
+	}
+
+	search_for_str(filename);
+
+	gnutls_certificate_free_credentials(x509_cred);
+
+	gnutls_global_deinit();
+	remove(filename);
+
+	if (debug)
+		success("success");
+}