author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 02 Feb 2010 01:39:10 +0200 | |
changeset 0 | cec860690d41 |
permissions | -rw-r--r-- |
0
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/* |
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* Copyright (c) 1994, 1995, 1996 |
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* The Regents of the University of California. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. All advertising materials mentioning features or use of this software |
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* must display the following acknowledgement: |
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* This product includes software developed by the Computer Systems |
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* Engineering Group at Lawrence Berkeley Laboratory. |
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* 4. Neither the name of the University nor of the Laboratory may be used |
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* to endorse or promote products derived from this software without |
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* specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* @(#) $Header: /tcpdump/master/libpcap/pcap-int.h,v 1.68.2.9 2006/02/22 17:09:54 gianluca Exp $ (LBL) |
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*/ |
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|
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#ifndef pcap_int_h |
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#define pcap_int_h |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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#include <pcap.h> |
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#ifdef WIN32 |
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#include <Packet32.h> |
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#endif /* WIN32 */ |
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#ifdef MSDOS |
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#include <fcntl.h> |
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#include <io.h> |
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#endif |
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/* |
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* Savefile |
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*/ |
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typedef enum { |
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NOT_SWAPPED, |
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SWAPPED, |
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MAYBE_SWAPPED |
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} swapped_type_t; |
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|
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struct pcap_sf { |
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FILE *rfile; |
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int swapped; |
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int hdrsize; |
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swapped_type_t lengths_swapped; |
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int version_major; |
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int version_minor; |
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u_char *base; |
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}; |
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|
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struct pcap_md { |
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struct pcap_stat stat; |
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/*XXX*/ |
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int use_bpf; /* using kernel filter */ |
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u_long TotPkts; /* can't oflow for 79 hrs on ether */ |
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u_long TotAccepted; /* count accepted by filter */ |
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u_long TotDrops; /* count of dropped packets */ |
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long TotMissed; /* missed by i/f during this run */ |
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long OrigMissed; /* missed by i/f before this run */ |
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char *device; /* device name */ |
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#ifdef linux |
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int sock_packet; /* using Linux 2.0 compatible interface */ |
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int timeout; /* timeout specified to pcap_open_live */ |
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int clear_promisc; /* must clear promiscuous mode when we close */ |
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int cooked; /* using SOCK_DGRAM rather than SOCK_RAW */ |
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int ifindex; /* interface index of device we're bound to */ |
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int lo_ifindex; /* interface index of the loopback device */ |
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struct pcap *next; /* list of open promiscuous sock_packet pcaps */ |
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u_int packets_read; /* count of packets read with recvfrom() */ |
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#endif |
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|
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#ifdef HAVE_DAG_API |
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#ifdef HAVE_DAG_STREAMS_API |
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u_char *dag_mem_bottom; /* DAG card current memory bottom pointer */ |
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u_char *dag_mem_top; /* DAG card current memory top pointer */ |
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#else |
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void *dag_mem_base; /* DAG card memory base address */ |
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u_int dag_mem_bottom; /* DAG card current memory bottom offset */ |
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u_int dag_mem_top; /* DAG card current memory top offset */ |
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#endif /* HAVE_DAG_STREAMS_API */ |
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int dag_fcs_bits; /* Number of checksum bits from link layer */ |
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int dag_offset_flags; /* Flags to pass to dag_offset(). */ |
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int dag_stream; /* DAG stream number */ |
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int dag_timeout; /* timeout specified to pcap_open_live. |
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* Same as in linux above, introduce |
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* generally? */ |
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#endif /* HAVE_DAG_API */ |
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110 |
|
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#ifdef HAVE_REMOTE |
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112 |
/*! |
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113 |
There is really a mess with previous variables, and it seems to me that they are not used |
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(they are used in pcap_pf.c only). I think we have to start using them. |
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The meaning is the following: |
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116 |
|
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- TotPkts: the amount of packets received by the bpf filter, *before* applying the filter |
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- TotAccepted: the amount of packets that satisfies the filter |
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- TotDrops: the amount of packet that were dropped into the kernel buffer because of lack of space |
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- TotMissed: the amount of packets that were dropped by the physical interface; it is basically |
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the value of the hardware counter into the card. This number is never put to zero, so this number |
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takes into account the *total* number of interface drops starting from the interface power-on. |
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- OrigMissed: the amount of packets that were dropped by the interface *when the capture begins*. |
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This value is used to detect the number of packets dropped by the interface *during the present |
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capture*, so that (ps_ifdrops= TotMissed - OrigMissed). |
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*/ |
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unsigned int TotNetDrops; //!< keeps the number of packets that have been dropped by the network |
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128 |
/*! |
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\brief It keeps the number of packets that have been received by the application. |
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130 |
|
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Packets dropped by the kernel buffer are not counted in this variable. The variable is always |
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equal to (TotAccepted - TotDrops), exept for the case of remote capture, in which we have also |
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packets in fligh, i.e. that have been transmitted by the remote host, but that have not been |
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134 |
received (yet) from the client. In this case, (TotAccepted - TotDrops - TotNetDrops) gives a |
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wrong result, since this number does not corresponds always to the number of packet received by |
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the application. For this reason, in the remote capture we need another variable that takes |
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into account of the number of packets actually received by the application. |
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138 |
*/ |
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unsigned int TotCapt; |
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#endif /* HAVE_REMOTE */ |
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}; |
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142 |
|
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/* |
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* Ultrix, DEC OSF/1^H^H^H^H^H^H^H^H^HDigital UNIX^H^H^H^H^H^H^H^H^H^H^H^H |
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* Tru64 UNIX, and NetBSD pad to make everything line up on a nice boundary. |
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146 |
*/ |
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#if defined(ultrix) || defined(__osf__) || (defined(__NetBSD__) && __NetBSD_Version__ > 106000000) |
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#define PCAP_FDDIPAD 3 |
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#endif |
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150 |
|
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struct pcap { |
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#ifdef WIN32 |
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ADAPTER *adapter; |
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LPPACKET Packet; |
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int timeout; |
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int nonblock; |
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#else |
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int fd; |
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int selectable_fd; |
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int send_fd; |
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#endif /* WIN32 */ |
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int snapshot; |
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int linktype; |
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int tzoff; /* timezone offset */ |
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int offset; /* offset for proper alignment */ |
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166 |
|
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int break_loop; /* flag set to force break from packet-reading loop */ |
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168 |
|
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#ifdef PCAP_FDDIPAD |
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int fddipad; |
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#endif |
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172 |
|
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#ifdef MSDOS |
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int inter_packet_wait; /* offline: wait between packets */ |
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void (*wait_proc)(void); /* call proc while waiting */ |
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#endif |
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177 |
|
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struct pcap_sf sf; |
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struct pcap_md md; |
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180 |
|
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/* |
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* Read buffer. |
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*/ |
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int bufsize; |
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u_char *buffer; |
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u_char *bp; |
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int cc; |
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188 |
|
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/* |
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* Place holder for pcap_next(). |
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*/ |
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u_char *pkt; |
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193 |
|
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/* We're accepting only packets in this direction/these directions. */ |
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pcap_direction_t direction; |
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196 |
|
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/* |
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* Methods. |
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199 |
*/ |
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int (*read_op)(pcap_t *, int cnt, pcap_handler, u_char *); |
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int (*inject_op)(pcap_t *, const void *, size_t); |
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int (*setfilter_op)(pcap_t *, struct bpf_program *); |
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int (*setdirection_op)(pcap_t *, pcap_direction_t); |
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int (*set_datalink_op)(pcap_t *, int); |
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int (*getnonblock_op)(pcap_t *, char *); |
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int (*setnonblock_op)(pcap_t *, int, char *); |
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int (*stats_op)(pcap_t *, struct pcap_stat *); |
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void (*close_op)(pcap_t *); |
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/* |
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* Placeholder for filter code if bpf not in kernel. |
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*/ |
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struct bpf_program fcode; |
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char errbuf[PCAP_ERRBUF_SIZE + 1]; |
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int dlt_count; |
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u_int *dlt_list; |
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struct pcap_pkthdr pcap_header; /* This is needed for the pcap_next_ex() to work */ |
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|
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#ifdef HAVE_REMOTE |
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#ifndef WIN32 // Win32 already defines 'timeout' |
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int timeout; //!< timeout to be used in the pcap_open() |
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#endif |
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/*! \brief '1' if we're the network client; needed by several functions (like pcap_setfilter() ) to know if |
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they have to use the socket or they have to open the local adapter. */ |
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int rmt_clientside; |
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|
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SOCKET rmt_sockctrl; //!< socket ID of the socket used for the control connection |
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SOCKET rmt_sockdata; //!< socket ID of the socket used for the data connection |
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int rmt_flags; //!< we have to save flags, since they are passed by the pcap_open_live(), but they are used by the pcap_startcapture() |
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int rmt_capstarted; //!< 'true' if the capture is already started (needed to knoe if we have to call the pcap_startcapture() |
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struct pcap_samp rmt_samp; //!< Keeps the parameters related to the sampling process. |
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char *currentfilter; //!< Pointer to a buffer (allocated at run-time) that stores the current filter. Needed when flag PCAP_OPENFLAG_NOCAPTURE_RPCAP is turned on. |
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#endif /* HAVE_REMOTE */ |
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}; |
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237 |
|
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/* |
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* This is a timeval as stored in a savefile. |
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* It has to use the same types everywhere, independent of the actual |
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* `struct timeval'; `struct timeval' has 32-bit tv_sec values on some |
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* platforms and 64-bit tv_sec values on other platforms, and writing |
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* out native `struct timeval' values would mean files could only be |
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* read on systems with the same tv_sec size as the system on which |
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* the file was written. |
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*/ |
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|
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struct pcap_timeval { |
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bpf_int32 tv_sec; /* seconds */ |
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bpf_int32 tv_usec; /* microseconds */ |
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}; |
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|
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/* |
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* This is a `pcap_pkthdr' as actually stored in a savefile. |
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* |
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* Do not change the format of this structure, in any way (this includes |
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* changes that only affect the length of fields in this structure), |
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* and do not make the time stamp anything other than seconds and |
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* microseconds (e.g., seconds and nanoseconds). Instead: |
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* |
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* introduce a new structure for the new format; |
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* |
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* send mail to "tcpdump-workers@tcpdump.org", requesting a new |
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* magic number for your new capture file format, and, when |
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* you get the new magic number, put it in "savefile.c"; |
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* |
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* use that magic number for save files with the changed record |
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* header; |
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* |
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* make the code in "savefile.c" capable of reading files with |
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* the old record header as well as files with the new record header |
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* (using the magic number to determine the header format). |
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* |
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* Then supply the changes to "patches@tcpdump.org", so that future |
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* versions of libpcap and programs that use it (such as tcpdump) will |
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* be able to read your new capture file format. |
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*/ |
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|
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struct pcap_sf_pkthdr { |
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struct pcap_timeval ts; /* time stamp */ |
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bpf_u_int32 caplen; /* length of portion present */ |
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bpf_u_int32 len; /* length this packet (off wire) */ |
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}; |
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|
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/* |
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* How a `pcap_pkthdr' is actually stored in savefiles written |
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* by some patched versions of libpcap (e.g. the ones in Red |
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* Hat Linux 6.1 and 6.2). |
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* |
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* Do not change the format of this structure, in any way (this includes |
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* changes that only affect the length of fields in this structure). |
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* Instead, introduce a new structure, as per the above. |
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*/ |
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|
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struct pcap_sf_patched_pkthdr { |
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struct pcap_timeval ts; /* time stamp */ |
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bpf_u_int32 caplen; /* length of portion present */ |
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bpf_u_int32 len; /* length this packet (off wire) */ |
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int index; |
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unsigned short protocol; |
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unsigned char pkt_type; |
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}; |
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|
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int yylex(void); |
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|
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#ifndef min |
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#define min(a, b) ((a) > (b) ? (b) : (a)) |
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#endif |
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|
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/* XXX should these be in pcap.h? */ |
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int pcap_offline_read(pcap_t *, int, pcap_handler, u_char *); |
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int pcap_read(pcap_t *, int cnt, pcap_handler, u_char *); |
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#ifndef HAVE_STRLCPY |
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#define strlcpy(x, y, z) \ |
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(strncpy((x), (y), (z)), \ |
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((z) <= 0 ? 0 : ((x)[(z) - 1] = '\0')), \ |
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strlen((y))) |
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#endif |
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#include <stdarg.h> |
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#if !defined(HAVE_SNPRINTF) |
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#define snprintf pcap_snprintf |
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extern int snprintf (char *, size_t, const char *, ...); |
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#endif |
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|
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#if !defined(HAVE_VSNPRINTF) |
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#define vsnprintf pcap_vsnprintf |
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extern int vsnprintf (char *, size_t, const char *, va_list ap); |
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#endif |
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/* |
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* Routines that most pcap implementations can use for non-blocking mode. |
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*/ |
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#if !defined(WIN32) && !defined(MSDOS) |
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int pcap_getnonblock_fd(pcap_t *, char *); |
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int pcap_setnonblock_fd(pcap_t *p, int, char *); |
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#endif |
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void pcap_close_common(pcap_t *); |
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/* |
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* Internal interfaces for "pcap_findalldevs()". |
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* |
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* "pcap_platform_finddevs()" is a platform-dependent routine to |
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* add devices not found by the "standard" mechanisms (SIOCGIFCONF, |
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* "getifaddrs()", etc.. |
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* |
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* "pcap_add_if()" adds an interface to the list of interfaces. |
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*/ |
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int pcap_platform_finddevs(pcap_if_t **, char *); |
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int add_addr_to_iflist(pcap_if_t **, const char *, u_int, struct sockaddr *, |
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size_t, struct sockaddr *, size_t, struct sockaddr *, size_t, |
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struct sockaddr *, size_t, char *); |
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int pcap_add_if(pcap_if_t **, const char *, u_int, const char *, char *); |
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struct sockaddr *dup_sockaddr(struct sockaddr *, size_t); |
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int add_or_find_if(pcap_if_t **, pcap_if_t **, const char *, u_int, |
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const char *, char *); |
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#ifdef WIN32 |
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char *pcap_win32strerror(void); |
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#endif |
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int install_bpf_program(pcap_t *, struct bpf_program *); |
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int pcap_strcasecmp(const char *, const char *); |
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#ifdef __cplusplus |
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} |
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#endif |
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#endif |