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pcap.d

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  1. module pcap;
  2. /* -*- Mode: c; tab-width: 8; indent-tabs-mode: 1; c-basic-offset: 8; -*- */
  3. /*
  4.  * Copyright (c) 1993, 1994, 1995, 1996, 1997
  5.  *      The Regents of the University of California.  All rights reserved.
  6.  *
  7.  * Redistribution and use in source and binary forms, with or without
  8.  * modification, are permitted provided that the following conditions
  9.  * are met:
  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. All advertising materials mentioning features or use of this software
  16.  *    must display the following acknowledgement:
  17.  *      This product includes software developed by the Computer Systems
  18.  *      Engineering Group at Lawrence Berkeley Laboratory.
  19.  * 4. Neither the name of the University nor of the Laboratory may be used
  20.  *    to endorse or promote products derived from this software without
  21.  *    specific prior written permission.
  22.  *
  23.  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  24.  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25.  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26.  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27.  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28.  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29.  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30.  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31.  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32.  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33.  * SUCH DAMAGE.
  34.  *
  35.  * @(#) $Header: /tcpdump/master/libpcap/pcap/pcap.h,v 1.4.2.11 2008-10-06 15:38:39 gianluca Exp $ (LBL)
  36.  */
  37.  
  38.  import bpf;
  39.  
  40. import std.c.time;
  41.  
  42.  version(Windows){
  43.  //import pcapStdinc;
  44.  import std.c.windows.winsock;
  45.  }
  46. version(OSX){
  47. import std.c.osx.socket;
  48. }
  49. version(linux){
  50. import std.c.linux.socket;
  51. }
  52. version(FreeBSD){
  53. import std.c.freebsd.socket;
  54. }
  55. //import pcap.bpf;
  56. import std.stdio;
  57.  
  58.  
  59. extern (C) {
  60.  
  61. const PCAP_VERSION_MAJOR=2;
  62. const PCAP_VERSION_MINOR=4;
  63.  
  64. const PCAP_ERRBUF_SIZE=256;
  65.  
  66. //incomplete c types, void * does the job?
  67. alias void * pcap_t;
  68. alias void * pcap_dumper_t;
  69. alias pcap_if pcap_if_t;
  70. alias pcap_addr pcap_addr_t;
  71.  
  72. /*
  73.  * The first record in the file contains saved values for some
  74.  * of the flags used in the printout phases of tcpdump.
  75.  * Many fields here are 32 bit ints so compilers won't insert unwanted
  76.  * padding; these files need to be interchangeable across architectures.
  77.  *
  78.  * Do not change the layout of this structure, in any way (this includes
  79.  * changes that only affect the length of fields in this structure).
  80.  *
  81.  * Also, do not change the interpretation of any of the members of this
  82.  * structure, in any way (this includes using values other than
  83.  * LINKTYPE_ values, as defined in "savefile.c", in the "linktype"
  84.  * field).
  85.  *
  86.  * Instead:
  87.  *
  88.  *      introduce a new structure for the new format, if the layout
  89.  *      of the structure changed;
  90.  *
  91.  *      send mail to "tcpdump-workers@lists.tcpdump.org", requesting
  92.  *      a new magic number for your new capture file format, and, when
  93.  *      you get the new magic number, put it in "savefile.c";
  94.  *
  95.  *      use that magic number for save files with the changed file
  96.  *      header;
  97.  *
  98.  *      make the code in "savefile.c" capable of reading files with
  99.  *      the old file header as well as files with the new file header
  100.  *      (using the magic number to determine the header format).
  101.  *
  102.  * Then supply the changes as a patch at
  103.  *
  104.  *      http://sourceforge.net/projects/libpcap/
  105.  *
  106.  * so that future versions of libpcap and programs that use it (such as
  107.  * tcpdump) will be able to read your new capture file format.
  108.  */
  109. struct pcap_file_header {
  110.         uint magic;
  111.         ushort version_major;
  112.         ushort version_minor;
  113.         int thiszone;   /* gmt to local correction */
  114.         uint sigfigs;   /* accuracy of timestamps */
  115.         uint snaplen;   /* max length saved portion of each pkt */
  116.         uint linktype;  /* data link type (LINKTYPE_*) */
  117. }
  118.  
  119. /*
  120.  * Macros for the value returned by pcap_datalink_ext().
  121.  *
  122.  * If LT_FCS_LENGTH_PRESENT(x) is true, the LT_FCS_LENGTH(x) macro
  123.  * gives the FCS length of packets in the capture.
  124.  */
  125.  //not even going to try...
  126. /*#define LT_FCS_LENGTH_PRESENT(x)      ((x) & 0x04000000)
  127. #define LT_FCS_LENGTH(x)                (((x) & 0xF0000000) >> 28)
  128. #define LT_FCS_DATALINK_EXT(x)          ((((x) & 0xF) << 28) | 0x04000000)*/
  129.  
  130. enum pcap_direction_t{
  131.        PCAP_D_INOUT = 0,
  132.        PCAP_D_IN,
  133.        PCAP_D_OUT
  134. }
  135.  
  136. /*
  137.  * Generic per-packet information, as supplied by libpcap.
  138.  *
  139.  * The time stamp can and should be a "struct timeval", regardless of
  140.  * whether your system supports 32-bit tv_sec in "struct timeval",
  141.  * 64-bit tv_sec in "struct timeval", or both if it supports both 32-bit
  142.  * and 64-bit applications.  The on-disk format of savefiles uses 32-bit
  143.  * tv_sec (and tv_usec); this structure is irrelevant to that.  32-bit
  144.  * and 64-bit versions of libpcap, even if they're on the same platform,
  145.  * should supply the appropriate version of "struct timeval", even if
  146.  * that's not what the underlying packet capture mechanism supplies.
  147.  */
  148. struct pcap_pkthdr {
  149.        
  150.         timeval ts;     /* time stamp */
  151.         uint caplen;    /* length of portion present */
  152.         uint len;       /* length this packet (off wire) */
  153. }
  154.  
  155. /*
  156.  * As returned by the pcap_stats()
  157.  */
  158. struct pcap_stat {
  159.         uint ps_recv;           /* number of packets received */
  160.         uint ps_drop;           /* number of packets dropped */
  161.         uint ps_ifdrop; /* drops by interface XXX not yet supported */
  162.         //NOT SUPPORTED
  163. version(HAVE_REMOTE){
  164.         uint ps_capt;           /* number of packets that are received by the application; please get rid off the Win32 ifdef */
  165.         uint ps_sent;           /* number of packets sent by the server on the network */
  166.         uint ps_netdrop;        /* number of packets lost on the network */
  167. }
  168. }
  169.  
  170.  
  171. /*
  172.  * Item in a list of interfaces.
  173.  */
  174. struct pcap_if {
  175.         pcap_if *next;
  176.         char *name;             /* name to hand to "pcap_open_live()" */
  177.         char *description;      /* textual description of interface, or NULL */
  178.         pcap_addr *addresses;
  179.         uint flags;     /* PCAP_IF_ interface flags */
  180. }
  181.  
  182. const PCAP_IF_LOOPBACK= 0x00000001;     /* interface is loopback */
  183.  
  184. /*
  185.  * Representation of an interface address.
  186.  */
  187. struct pcap_addr {
  188.         pcap_addr *next;
  189.         sockaddr *addr;         /* address */
  190.         sockaddr *netmask;      /* netmask for that address */
  191.         sockaddr *broadaddr;    /* broadcast address for that address */
  192.         sockaddr *dstaddr;      /* P2P destination address for that address */
  193. }
  194.  
  195. /*alias void (*pcap_handler)(ubyte *, const struct pcap_pkthdr *,
  196.                              const ubyte *);*/
  197.  
  198. /*
  199.  * Error codes for the pcap API.
  200.  * These will all be negative, so you can check for the success or
  201.  * failure of a call that returns these codes by checking for a
  202.  * negative value.
  203.  */
  204. const PCAP_ERROR                =       -1      ;/* generic error code */
  205. const PCAP_ERROR_BREAK  =       -2      ;/* loop terminated by pcap_breakloop */
  206. const PCAP_ERROR_NOT_ACTIVATED  =-3     ;/* the capture needs to be activated */
  207. const PCAP_ERROR_ACTIVATED              =-4     ;/* the operation can't be performed on already activated captures */
  208. const PCAP_ERROR_NO_SUCH_DEVICE =-5     ;/* no such device exists */
  209. const PCAP_ERROR_RFMON_NOTSUP   =       -6;     /* this device doesn't support rfmon (monitor) mode */
  210. const PCAP_ERROR_NOT_RFMON              =-7     ;/* operation supported only in monitor mode */
  211. const PCAP_ERROR_PERM_DENIED    =       -8;     /* no permission to open the device */
  212. const PCAP_ERROR_IFACE_NOT_UP   =       -9;     /* interface isn't up */
  213.  
  214. /*
  215.  * Warning codes for the pcap API.
  216.  * These will all be positive and non-zero, so they won't look like
  217.  * errors.
  218.  */
  219. const PCAP_WARNING              =       1;      /* generic warning code */
  220. const PCAP_WARNING_PROMISC_NOTSUP       =2;     /* this device doesn't support promiscuous mode */
  221.  
  222. char    *pcap_lookupdev(char *);
  223. int     pcap_lookupnet(const char *, uint *, uint *, char *);
  224.  
  225. pcap_t  *pcap_create(const char *, char *);
  226. int     pcap_set_snaplen(pcap_t *, int);
  227. int     pcap_set_promisc(pcap_t *, int);
  228. int     pcap_can_set_rfmon(pcap_t *);
  229. int     pcap_set_rfmon(pcap_t *, int);
  230. int     pcap_set_timeout(pcap_t *, int);
  231. int     pcap_set_buffer_size(pcap_t *, int);
  232. int     pcap_activate(pcap_t *);
  233.  
  234. pcap_t  *pcap_open_live(const char *, int, int, int, char *);
  235. pcap_t  *pcap_open_dead(int, int);
  236. pcap_t  *pcap_open_offline(const char *, char *);
  237.  
  238. version(Windows){
  239. pcap_t  *pcap_hopen_offline(void *_t, char *);
  240. static pcap_t *pcap_fopen_offline(FILE *, char *);
  241. }
  242. else{
  243. pcap_t  *pcap_fopen_offline(FILE *, char *);
  244. }
  245.  
  246. void    pcap_close(pcap_t *);
  247. //we don't have a definitio for pcap_handler so
  248. alias void * pcap_handler;
  249. int     pcap_loop(pcap_t *, int, pcap_handler, ubyte *);
  250. int     pcap_dispatch(pcap_t *, int, pcap_handler, ubyte *);
  251.  
  252.  ubyte*
  253.         pcap_next(pcap_t *,  pcap_pkthdr *);
  254. int     pcap_next_ex(pcap_t *,  pcap_pkthdr **, const ubyte **);
  255. void    pcap_breakloop(pcap_t *);
  256. int     pcap_stats(pcap_t *,  pcap_stat *);
  257. int     pcap_setfilter(pcap_t *,  bpf_program *);
  258. int     pcap_setdirection(pcap_t *, pcap_direction_t);
  259. int     pcap_getnonblock(pcap_t *, char *);
  260. int     pcap_setnonblock(pcap_t *, int, char *);
  261. int     pcap_inject(pcap_t *, const void *, size_t);
  262. int     pcap_sendpacket(pcap_t *, const ubyte *, int);
  263. char *pcap_statustostr(int);
  264. char *pcap_strerror(int);
  265. char    *pcap_geterr(pcap_t *);
  266. void    pcap_perror(pcap_t *, char *);
  267. int     pcap_compile(pcap_t *,  bpf_program *, const char *, int,
  268.             uint);
  269. int     pcap_compile_nopcap(int, int,  bpf_program *,
  270.             const char *, int, uint);
  271. void    pcap_freecode( bpf_program *);
  272. int     pcap_offline_filter( bpf_program *, const  pcap_pkthdr *,
  273.             const ubyte *);
  274. int     pcap_datalink(pcap_t *);
  275. int     pcap_datalink_ext(pcap_t *);
  276. int     pcap_list_datalinks(pcap_t *, int **);
  277. int     pcap_set_datalink(pcap_t *, int);
  278. void    pcap_free_datalinks(int *);
  279. int     pcap_datalink_name_to_val(const char *);
  280.  char *pcap_datalink_val_to_name(int);
  281.  char *pcap_datalink_val_to_description(int);
  282. int     pcap_snapshot(pcap_t *);
  283. int     pcap_is_swapped(pcap_t *);
  284. int     pcap_major_version(pcap_t *);
  285. int     pcap_minor_version(pcap_t *);
  286.  
  287. /* XXX */
  288. FILE    *pcap_file(pcap_t *);
  289. int     pcap_fileno(pcap_t *);
  290.  
  291. pcap_dumper_t *pcap_dump_open(pcap_t *, const char *);
  292. pcap_dumper_t *pcap_dump_fopen(pcap_t *, FILE *fp);
  293. FILE    *pcap_dump_file(pcap_dumper_t *);
  294. long    pcap_dump_ftell(pcap_dumper_t *);
  295. int     pcap_dump_flush(pcap_dumper_t *);
  296. void    pcap_dump_close(pcap_dumper_t *);
  297. void    pcap_dump(ubyte *, const  pcap_pkthdr *, const ubyte *);
  298.  
  299. int     pcap_findalldevs(pcap_if_t **, char *);
  300. void    pcap_freealldevs(pcap_if_t *);
  301. char *pcap_lib_version();
  302.  
  303. /* XXX this guy lives in the bpf tree */
  304. uint    bpf_filter(const  bpf_insn *, const ubyte *, uint, uint);
  305. int     bpf_validate(const  bpf_insn *f, int len);
  306. char    *bpf_image(const  bpf_insn *, int);
  307. void    bpf_dump(const  bpf_program *, int);
  308.  
  309. version(Windows){
  310. /*
  311.  * Win32 definitions
  312.  */
  313.  
  314. int pcap_setbuff(pcap_t *p, int dim);
  315. int pcap_setmode(pcap_t *p, int mode);
  316. int pcap_setmintocopy(pcap_t *p, int size);
  317. }
  318.  
  319. const MODE_CAPT =0;
  320. const MODE_STAT =1;
  321. const MODE_MON =2;
  322.  
  323.  
  324. version(Posix){
  325.  
  326. /*
  327.  * UN*X definitions
  328.  */
  329.  
  330. int     pcap_get_selectable_fd(pcap_t *);
  331.  
  332. }
  333.  
  334.  
  335. //NOT SUPPORTED
  336. version(HAVE_REMOTE){
  337. import remoteExt;
  338. }
  339.  
  340. }
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