tcpedit.h 3.3 KB

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  1. /* $Id: tcpedit.h 1841 2007-04-26 03:43:14Z aturner $ */
  2. /*
  3. * Copyright (c) 2001-2007 Aaron Turner.
  4. * All rights reserved.
  5. *
  6. * Redistribution and use in source and binary forms, with or without
  7. * modification, are permitted provided that the following conditions
  8. * are met:
  9. *
  10. * 1. Redistributions of source code must retain the above copyright
  11. * notice, this list of conditions and the following disclaimer.
  12. * 2. Redistributions in binary form must reproduce the above copyright
  13. * notice, this list of conditions and the following disclaimer in the
  14. * documentation and/or other materials provided with the distribution.
  15. * 3. Neither the names of the copyright owners nor the names of its
  16. * contributors may be used to endorse or promote products derived from
  17. * this software without specific prior written permission.
  18. *
  19. * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
  20. * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  21. * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  22. * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
  23. * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24. * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  25. * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26. * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
  27. * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  28. * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  29. * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30. */
  31. #include "defines.h"
  32. #include "common.h"
  33. #include "parse_args.h"
  34. #ifndef _TCPEDIT_H_
  35. #define _TCPEDIT_H_
  36. #define TCPEDIT_SOFT_ERROR -2
  37. #define TCPEDIT_ERROR -1
  38. #define TCPEDIT_OK 0
  39. #define TCPEDIT_WARN 1
  40. typedef struct tcpedit_s tcpedit_t;
  41. int tcpedit_init(tcpedit_t **tcpedit_ex, int dlt);
  42. char *tcpedit_geterr(tcpedit_t *tcpedit);
  43. char *tcpedit_getwarn(tcpedit_t *tcpedit);
  44. int tcpedit_checkerror(tcpedit_t *tcpedit, const int rcode, const char *prefix);
  45. int tcpedit_validate(tcpedit_t *tcpedit);
  46. int tcpedit_packet(tcpedit_t *tcpedit, struct pcap_pkthdr **pkthdr,
  47. u_char **pktdata, tcpr_dir_t direction);
  48. int tcpedit_close(tcpedit_t *tcpedit);
  49. int tcpedit_get_output_dlt(tcpedit_t *tcpedit);
  50. enum tcpedit_coder_s {
  51. BEFORE_PROCESS,
  52. AFTER_PROCESS
  53. };
  54. typedef enum tcpedit_coder_s tcpedit_coder_t;
  55. /*
  56. * semi-direct packet access methods. Use when you're not using tcpedit_packet()
  57. * all these methods either return NULL or a TCPEDIT_(SOFT_)ERROR code on error
  58. */
  59. int tcpedit_l2len(tcpedit_t *tcpedit, tcpedit_coder_t code, u_char *packet, const int pktlen);
  60. /* on strictly aligned systems, this may return a pointer to a temporary static buffer */
  61. const u_char *tcpedit_l3data(tcpedit_t *tcpedit, tcpedit_coder_t code, u_char *packet, const int pktlen);
  62. int tcpedit_l3proto(tcpedit_t *tcpedit, tcpedit_coder_t code, const u_char *packet, const int pktlen);
  63. // u_char *tcpedit_srcmac(tcpedit_t *tcpedit, tcpedit_coder_t code, u_char *packet, const int pktlen);
  64. // u_char *tcpedit_dstmac(tcpedit_t *tcpedit, tcpedit_coder_t code, u_char *packet, const int pktlen);
  65. // int tcpedit_maclen(tcpedit_t *tcpedit, tcpedit_coder_t code);
  66. COUNTER tcpedit_get_total_bytes(tcpedit_t *tcpedit);
  67. COUNTER tcpedit_get_pkts_edited(tcpedit_t *tcpedit);
  68. #endif