early-access version 1255

externals/libressl/tls/tls_keypair.c

@@ -0,0 +1,169 @@
+/* $OpenBSD: tls_keypair.c,v 1.6 2018/04/07 16:35:34 jsing Exp $ */
+/*
+ * Copyright (c) 2014 Joel Sing <jsing@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <openssl/bio.h>
+#include <openssl/err.h>
+#include <openssl/pem.h>
+
+#include <tls.h>
+
+#include "tls_internal.h"
+
+struct tls_keypair *
+tls_keypair_new(void)
+{
+	return calloc(1, sizeof(struct tls_keypair));
+}
+
+static int
+tls_keypair_pubkey_hash(struct tls_keypair *keypair, struct tls_error *error)
+{
+	X509 *cert = NULL;
+	int rv = -1;
+
+	free(keypair->pubkey_hash);
+	keypair->pubkey_hash = NULL;
+
+	if (keypair->cert_mem == NULL) {
+		rv = 0;
+		goto done;
+	}
+
+	if (tls_keypair_load_cert(keypair, error, &cert) == -1)
+		goto err;
+	if (tls_cert_pubkey_hash(cert, &keypair->pubkey_hash) == -1)
+		goto err;
+
+	rv = 0;
+
+ err:
+	X509_free(cert);
+ done:
+	return (rv);
+}
+
+void
+tls_keypair_clear_key(struct tls_keypair *keypair)
+{
+	freezero(keypair->key_mem, keypair->key_len);
+	keypair->key_mem = NULL;
+	keypair->key_len = 0;
+}
+
+int
+tls_keypair_set_cert_file(struct tls_keypair *keypair, struct tls_error *error,
+    const char *cert_file)
+{
+	if (tls_config_load_file(error, "certificate", cert_file,
+	    &keypair->cert_mem, &keypair->cert_len) == -1)
+		return -1;
+	return tls_keypair_pubkey_hash(keypair, error);
+}
+
+int
+tls_keypair_set_cert_mem(struct tls_keypair *keypair, struct tls_error *error,
+    const uint8_t *cert, size_t len)
+{
+	if (tls_set_mem(&keypair->cert_mem, &keypair->cert_len, cert, len) == -1)
+		return -1;
+	return tls_keypair_pubkey_hash(keypair, error);
+}
+
+int
+tls_keypair_set_key_file(struct tls_keypair *keypair, struct tls_error *error,
+    const char *key_file)
+{
+	tls_keypair_clear_key(keypair);
+	return tls_config_load_file(error, "key", key_file,
+	    &keypair->key_mem, &keypair->key_len);
+}
+
+int
+tls_keypair_set_key_mem(struct tls_keypair *keypair, struct tls_error *error,
+    const uint8_t *key, size_t len)
+{
+	tls_keypair_clear_key(keypair);
+	return tls_set_mem(&keypair->key_mem, &keypair->key_len, key, len);
+}
+
+int
+tls_keypair_set_ocsp_staple_file(struct tls_keypair *keypair,
+    struct tls_error *error, const char *ocsp_file)
+{
+	return tls_config_load_file(error, "ocsp", ocsp_file,
+	    &keypair->ocsp_staple, &keypair->ocsp_staple_len);
+}
+
+int
+tls_keypair_set_ocsp_staple_mem(struct tls_keypair *keypair,
+    struct tls_error *error, const uint8_t *staple, size_t len)
+{
+	return tls_set_mem(&keypair->ocsp_staple, &keypair->ocsp_staple_len,
+	    staple, len);
+}
+
+void
+tls_keypair_free(struct tls_keypair *keypair)
+{
+	if (keypair == NULL)
+		return;
+
+	tls_keypair_clear_key(keypair);
+
+	free(keypair->cert_mem);
+	free(keypair->ocsp_staple);
+	free(keypair->pubkey_hash);
+
+	free(keypair);
+}
+
+int
+tls_keypair_load_cert(struct tls_keypair *keypair, struct tls_error *error,
+    X509 **cert)
+{
+	char *errstr = "unknown";
+	BIO *cert_bio = NULL;
+	int ssl_err;
+	int rv = -1;
+
+	X509_free(*cert);
+	*cert = NULL;
+
+	if (keypair->cert_mem == NULL) {
+		tls_error_set(error, "keypair has no certificate");
+		goto err;
+	}
+	if ((cert_bio = BIO_new_mem_buf(keypair->cert_mem,
+	    keypair->cert_len)) == NULL) {
+		tls_error_set(error, "failed to create certificate bio");
+		goto err;
+	}
+	if ((*cert = PEM_read_bio_X509(cert_bio, NULL, tls_password_cb,
+	    NULL)) == NULL) {
+		if ((ssl_err = ERR_peek_error()) != 0)
+		    errstr = ERR_error_string(ssl_err, NULL);
+		tls_error_set(error, "failed to load certificate: %s", errstr);
+		goto err;
+	}
+
+	rv = 0;
+
+ err:
+	BIO_free(cert_bio);
+
+	return (rv);
+}