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- /* $Id: tcpedit-int.h 1802 2007-04-14 22:30:11Z aturner $ */
- /*
- * Copyright (c) 2006-2007 Aaron Turner.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the names of the copyright owners nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
- * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
- * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
- #include "defines.h"
- #include "common.h"
- #include "tcpedit.h"
- #include "plugins/dlt_plugins-int.h"
- #ifndef _TCPEDIT_INT_H_
- #define _TCPEDIT_INT_H_
- #define TCPEDIT_ERRSTR_LEN 1024
- struct tcpedit_runtime_s {
- COUNTER packetnum;
- COUNTER total_bytes;
- COUNTER pkts_edited;
- int dlt1;
- int dlt2;
- char errstr[TCPEDIT_ERRSTR_LEN];
- char warnstr[TCPEDIT_ERRSTR_LEN];
- #ifdef FORCE_ALIGN
- u_char *l3buff;
- #endif
- };
- typedef struct tcpedit_runtime_s tcpedit_runtime_t;
- /*
- * portmap data struct
- */
- struct tcpedit_portmap_s {
- long from;
- long to;
- struct tcpedit_portmap_s *next;
- };
- typedef struct tcpedit_portmap_s tcpedit_portmap_t;
- /*
- * all the arguments that the packet editing library supports
- */
- struct tcpedit_s {
- int validated; /* have we run tcpedit_validate()? */
- struct tcpeditdlt_s *dlt_ctx;
-
- /* runtime variables, don't mess with these */
- tcpedit_runtime_t runtime;
-
- /* skip rewriting IP/MAC's which are broadcast or multicast? */
- int skip_broadcast;
- /* rewrite traffic bi-directionally */
- int bidir;
- #define TCPEDIT_BIDIR_OFF 0x0
- #define TCPEDIT_BIDIR_ON 0x1
- /* pad or truncate packets */
- int fixlen;
- #define TCPEDIT_FIXLEN_OFF 0x0
- #define TCPEDIT_FIXLEN_PAD 0x1
- #define TCPEDIT_FIXLEN_TRUNC 0x2
- #define TCPEDIT_FIXLEN_DEL 0x3
- /* rewrite ip? */
- int rewrite_ip;
- #define TCPEDIT_REWRITE_IP_OFF 0x0
- #define TCPEDIT_REWRITE_IP_ON 0x1
-
- /* fix IP/TCP/UDP checksums */
- int fixcsum;
- #define TCPEDIT_FIXCSUM_OFF 0x0
- #define TCPEDIT_FIXCSUM_ON 0x1
- /* remove ethernet FCS */
- int efcs;
- #define TCPEDIT_EFCS_OFF 0x0
- #define TCPEDIT_EFCS_ON 0x1
- /* rewrite end-point IP addresses between cidrmap1 & cidrmap2 */
- tcpr_cidrmap_t *cidrmap1; /* tcpprep cache data */
- tcpr_cidrmap_t *cidrmap2;
-
- /* pseudo-randomize IP addresses using a seed */
- int seed;
-
- /* rewrite tcp/udp ports */
- tcpedit_portmap_t *portmap;
-
- int mtu; /* Deal with different MTU's */
- int maxpacket; /* L2 header + MTU */
- };
- #define tcpedit_seterr(x, y, ...) __tcpedit_seterr(x, __FUNCTION__, __LINE__, __FILE__, y, __VA_ARGS__)
- void __tcpedit_seterr(tcpedit_t *tcpedit, const char *func, const int line, const char *file, const char *fmt, ...);
- void tcpedit_setwarn(tcpedit_t *tcpedit, const char *fmt, ...);
- #endif
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