mirror of
https://github.com/rsyslog/rsyslog.git
synced 2025-12-17 21:00:42 +01:00
Andre lorbach
fcffb063e3
Support added in omfwd as instance parameter: streamdriver.TlsVerifyDepth Support added in imtcp as module parameter: streamdriver.TlsVerifyDepth Can be 2 or higher. Support added into ossl driver Support added into gtls driver Added testcases for both drivers. Parameter streamdriver.TlsVerifyDepth closes: https://github.com/rsyslog/rsyslog/issues/4035
113 lines
4.4 KiB
C
113 lines
4.4 KiB
C
/* An implementation of the nsd interface for GnuTLS.
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*
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* Copyright 2008-2016 Adiscon GmbH.
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*
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* This file is part of the rsyslog runtime library.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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* -or-
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* see COPYING.ASL20 in the source distribution
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef INCLUDED_NSD_GTLS_H
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#define INCLUDED_NSD_GTLS_H
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#include "nsd.h"
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#define NSD_GTLS_MAX_RCVBUF 16 * 1024 + 1/* TLS RFC 8449: max size of buffer for message reception */
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#define NSD_GTLS_MAX_CERT 10 /* max number of certs in our chain */
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typedef enum {
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gtlsRtry_None = 0, /**< no call needs to be retried */
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gtlsRtry_handshake = 1,
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gtlsRtry_recv = 2
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} gtlsRtryCall_t; /**< IDs of calls that needs to be retried */
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typedef nsd_if_t nsd_gtls_if_t; /* we just *implement* this interface */
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/* the nsd_gtls object */
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struct nsd_gtls_s {
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BEGINobjInstance; /* Data to implement generic object - MUST be the first data element! */
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nsd_t *pTcp; /**< our aggregated nsd_ptcp data */
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uchar *pszConnectHost; /**< hostname used for connect - may be used to
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authenticate peer if no other name given */
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int iMode; /* 0 - plain tcp, 1 - TLS */
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int bAbortConn; /* if set, abort conncection (fatal error had happened) */
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enum {
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GTLS_AUTH_CERTNAME = 0,
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GTLS_AUTH_CERTFINGERPRINT = 1,
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GTLS_AUTH_CERTVALID = 2,
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GTLS_AUTH_CERTANON = 3
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} authMode;
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enum {
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GTLS_EXPIRED_PERMIT = 0,
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GTLS_EXPIRED_DENY = 1,
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GTLS_EXPIRED_WARN = 2
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} permitExpiredCerts;
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enum {
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GTLS_NONE = 0,
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GTLS_PURPOSE = 1
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} dataTypeCheck;
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int bSANpriority; /* if true, we do stricter checking (if any SAN present we do not cehck CN) */
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gtlsRtryCall_t rtryCall;/**< what must we retry? */
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int bIsInitiator; /**< 0 if socket is the server end (listener), 1 if it is the initiator */
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gnutls_session_t sess;
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int bHaveSess; /* as we don't know exactly which gnutls_session values
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are invalid, we use this one to flag whether or
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not we are in a session (same as -1 for a socket
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meaning no sess) */
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int bReportAuthErr; /* only the first auth error is to be reported, this var triggers it. Initially, it is
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* set to 1 and changed to 0 after the first report. It is changed back to 1 after
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* one successful authentication. */
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permittedPeers_t *pPermPeers; /* permitted peers */
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uchar *gnutlsPriorityString; /* gnutls priority string */
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int DrvrVerifyDepth; /* Verify Depth for certificate chains */
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gnutls_x509_crt_t pOurCerts[NSD_GTLS_MAX_CERT]; /**< our certificate, if in client mode
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(unused in server mode) */
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unsigned int nOurCerts; /* number of certificates in our chain */
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gnutls_x509_privkey_t ourKey; /**< our private key, if in client mode (unused in server mode) */
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short bOurCertIsInit; /**< 1 if our certificate is initialized and must be deinit on destruction */
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short bOurKeyIsInit; /**< 1 if our private key is initialized and must be deinit on destruction */
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char *pszRcvBuf;
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int lenRcvBuf;
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/**< -1: empty, 0: connection closed, 1..NSD_GTLS_MAX_RCVBUF-1: data of that size present */
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int ptrRcvBuf; /**< offset for next recv operation if 0 < lenRcvBuf < NSD_GTLS_MAX_RCVBUF */
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};
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/* interface is defined in nsd.h, we just implement it! */
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#define nsd_gtlsCURR_IF_VERSION nsdCURR_IF_VERSION
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/* prototypes */
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PROTOTYPEObj(nsd_gtls);
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/* some prototypes for things used by our nsdsel_gtls helper class */
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uchar *gtlsStrerror(int error);
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rsRetVal gtlsChkPeerAuth(nsd_gtls_t *pThis);
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rsRetVal gtlsRecordRecv(nsd_gtls_t *pThis);
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/* the name of our library binary */
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#define LM_NSD_GTLS_FILENAME "lmnsd_gtls"
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#if GNUTLS_VERSION_NUMBER <= 0x00030000
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#define GTLS_ANON_PRIO_NOTLSV13 "NORMAL:-VERS-TLS1.3:+ANON-DH:+COMP-ALL"
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#define GTLS_ANON_PRIO "NORMAL:+ANON-DH:+COMP-ALL"
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#else
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#define GTLS_ANON_PRIO_NOTLSV13 "NORMAL:-VERS-TLS1.3:+ANON-DH:+ANON-ECDH:+COMP-ALL"
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#define GTLS_ANON_PRIO "NORMAL:+ANON-DH:+ANON-ECDH:+COMP-ALL"
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#endif
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#if GNUTLS_VERSION_MAJOR > 3 || (GNUTLS_VERSION_MAJOR == 3 && GNUTLS_VERSION_MINOR >=4)
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#define EXTENDED_CERT_CHECK_AVAILABLE
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#endif
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#endif /* #ifndef INCLUDED_NSD_GTLS_H */
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