lib/crypto: move gnutls error wrapper to own subsystem

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>

3 files changed, 104 insertions, 0 deletions

diff --git a/lib/crypto/gnutls_error.c b/lib/crypto/gnutls_error.c
new file mode 100644
index 00000000000..9e124c20c68
--- /dev/null
+++ b/lib/crypto/gnutls_error.c
@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2019      Andreas Schneider <asn@samba.org>
+ *
+ * This program 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.
+ *
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "includes.h"
+#include "gnutls_helpers.h"
+
+#include <gnutls/gnutls.h>
+
+NTSTATUS _gnutls_error_to_ntstatus(int gnutls_rc,
+				   NTSTATUS blocked_status,
+				   const char *function,
+				   const char *location)
+{
+	NTSTATUS status;
+
+	if (gnutls_rc == GNUTLS_E_SUCCESS) {
+		return NT_STATUS_OK;
+	}
+
+	switch (gnutls_rc) {
+	case GNUTLS_E_UNWANTED_ALGORITHM:
+		status = blocked_status;
+		break;
+	case GNUTLS_E_MEMORY_ERROR:
+		status = NT_STATUS_NO_MEMORY;
+		break;
+	case GNUTLS_E_INVALID_REQUEST:
+		status = NT_STATUS_INVALID_VARIANT;
+		break;
+	case GNUTLS_E_DECRYPTION_FAILED:
+		status = NT_STATUS_DECRYPTION_FAILED;
+		break;
+	case GNUTLS_E_ENCRYPTION_FAILED:
+		status = NT_STATUS_ENCRYPTION_FAILED;
+		break;
+	case GNUTLS_E_SHORT_MEMORY_BUFFER:
+		status = NT_STATUS_INVALID_PARAMETER;
+		break;
+	case GNUTLS_E_BASE64_DECODING_ERROR:
+	case GNUTLS_E_HASH_FAILED:
+	case GNUTLS_E_LIB_IN_ERROR_STATE:
+	case GNUTLS_E_INTERNAL_ERROR:
+	default:
+		status = NT_STATUS_INTERNAL_ERROR;
+		break;
+	}
+
+	D_WARNING("%s: GNUTLS ERROR: %s, NTSTATUS: %s at %s\n",
+		  function,
+		  gnutls_strerror_name(gnutls_rc),
+		  nt_errstr(status),
+		  location);
+
+	return status;
+}
diff --git a/lib/crypto/gnutls_helpers.h b/lib/crypto/gnutls_helpers.h
new file mode 100644
index 00000000000..3e7300ea2c0
--- /dev/null
+++ b/lib/crypto/gnutls_helpers.h
@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2019      Andreas Schneider <asn@samba.org>
+ *
+ * This program 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.
+ *
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _GNUTLS_HELPERS_H
+#define _GNUTLS_HELPERS_H
+
+#include "ntstatus.h"
+
+NTSTATUS _gnutls_error_to_ntstatus(int gnutls_rc,
+				   NTSTATUS blocked_status,
+				   const char *function,
+				   const char *location);
+#define gnutls_error_to_ntstatus(gnutls_rc, blocked_status) \
+	_gnutls_error_to_ntstatus(gnutls_rc, blocked_status, \
+				  __FUNCTION__, __location__)
+
+#endif /* _GNUTLS_HELPERS_H */
diff --git a/lib/crypto/wscript_build b/lib/crypto/wscript_build
index 01b70f14f77..e482bbfd487 100644
--- a/lib/crypto/wscript_build
+++ b/lib/crypto/wscript_build
@@ -5,6 +5,10 @@ extra_deps = ''
 if bld.CONFIG_SET("HAVE_AESNI_INTEL"):
         extra_deps += ' aesni-intel'
 
+bld.SAMBA_SUBSYSTEM('GNUTLS_HELPERS',
+                    source='gnutls_error.c',
+                    deps='gnutls samba-errors');
+
 bld.SAMBA_SUBSYSTEM('LIBCRYPTO',
         source='''md4.c arcfour.c
         aes.c rijndael-alg-fst.c aes_cmac_128.c aes_ccm_128.c aes_gcm_128.c